/* ==================== CSS变量定义 ==================== */
:root {
    --bg-primary: #ffffff;
    --bg-secondary: #fafafa;
    --bg-tertiary: #f0f0f0;
    --text-primary: #0a0a0a;
    --text-secondary: #666666;
    --text-tertiary: #999999;
    --accent-primary: #000000;
    --accent-secondary: #3b82f6; /* 蓝色主题色 */
    --accent-secondary-light: #60a5fa; /* 浅蓝色 */
    --border-color: #e0e0e0;
    --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);

    /* 模态框和表单专用变量 */
    --text-color: #0a0a0a;
    --bg-color: #ffffff;
    --hover-bg: #f5f5f5;
}

[data-theme="dark"] {
    --bg-primary: #0a0a0a;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #2a2a2a;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-tertiary: #808080;
    --accent-primary: #ffffff;
    --accent-secondary: #3b82f6; /* 蓝色主题色 */
    --accent-secondary-light: #60a5fa; /* 浅蓝色 */
    --border-color: #333333;
    --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.5);

    /* 模态框和表单专用变量 - 暗色模式 */
    --text-color: #ffffff;
    --bg-color: #1a1a1a;
    --hover-bg: #2a2a2a;
}

/* ==================== 基础样式 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    background-color: transparent;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Arial", sans-serif;
    background-color: transparent;
    color: var(--text-primary);
    line-height: 1.8;
    overflow-x: hidden;
    transition: background-color 0.4s cubic-bezier(0.4, 0, 0.2, 1),
                color 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    /* 优化滚动性能 */
    -webkit-overflow-scrolling: touch;
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 120px;
}

@media (max-width: 1024px) {
    .container {
        padding: 0 60px;
    }
}

/* ==================== 移动端提示页面 ==================== */
.mobile-notice {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg,
        #ffffff 0%,
        #f0f7ff 25%,
        #e0efff 50%,
        #c9e2ff 75%,
        #b8d9ff 100%);
    z-index: 10000;
    align-items: center;
    justify-content: center;
    padding: 20px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

[data-theme="dark"] .mobile-notice {
    background: linear-gradient(135deg,
        #1a1a2e 0%,
        #1f2a40 25%,
        #243b55 50%,
        #2a4a6a 75%,
        #305a80 100%);
}

/* 手机端提示页面跟随系统主题 */
@media (max-width: 768px) {
    @media (prefers-color-scheme: dark) {
        .mobile-notice:not([data-theme]) {
            background: linear-gradient(135deg,
                #1a1a2e 0%,
                #1f2a40 25%,
                #243b55 50%,
                #2a4a6a 75%,
                #305a80 100%);
        }

        .mobile-notice:not([data-theme]) .mobile-notice-content {
            background: rgba(26, 26, 46, 0.95);
            border-color: rgba(255, 255, 255, 0.1);
        }

        .mobile-notice:not([data-theme]) .mobile-notice-feature {
            background: rgba(59, 130, 246, 0.15);
        }

        .mobile-notice:not([data-theme]) .mobile-notice-btn-secondary {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(59, 130, 246, 0.4);
        }

        .mobile-notice:not([data-theme]) .mobile-notice-footer {
            border-top-color: rgba(255, 255, 255, 0.1);
        }
    }

    @media (prefers-color-scheme: light) {
        .mobile-notice:not([data-theme]) {
            background: linear-gradient(135deg,
                #ffffff 0%,
                #f0f7ff 25%,
                #e0efff 50%,
                #c9e2ff 75%,
                #b8d9ff 100%);
        }

        .mobile-notice:not([data-theme]) .mobile-notice-content {
            background: rgba(255, 255, 255, 0.95);
            border-color: rgba(255, 255, 255, 0.3);
        }

        .mobile-notice:not([data-theme]) .mobile-notice-feature {
            background: rgba(59, 130, 246, 0.08);
        }

        .mobile-notice:not([data-theme]) .mobile-notice-btn-secondary {
            background: rgba(255, 255, 255, 0.15);
            border-color: rgba(59, 130, 246, 0.3);
        }

        .mobile-notice:not([data-theme]) .mobile-notice-footer {
            border-top-color: rgba(0, 0, 0, 0.1);
        }
    }
}

.mobile-notice-content {
    max-width: 500px;
    width: 100%;
    text-align: center;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    padding: 60px 40px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    margin: auto;
    min-height: auto;
    display: flex;
    flex-direction: column;
}

[data-theme="dark"] .mobile-notice-content {
    background: rgba(26, 26, 26, 0.95);
    border-color: rgba(255, 255, 255, 0.1);
}

.mobile-notice-icon {
    color: var(--accent-secondary);
    margin-bottom: 30px;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* 手机端电脑图标弹跳动画降低高度 */
@media (max-width: 768px) {
    .mobile-notice-icon {
        animation: floatMobile 3s ease-in-out infinite;
    }
    
    @keyframes floatMobile {
        0%, 100% {
            transform: translateY(0);
        }
        50% {
            transform: translateY(-5px);
        }
    }
}

.mobile-notice-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 16px 0;
    letter-spacing: -0.02em;
}

.mobile-notice-description {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0 0 40px 0;
}

.mobile-notice-features {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 40px;
}

.mobile-notice-feature {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 16px;
    background: rgba(59, 130, 246, 0.08);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 15px;
    font-weight: 500;
}

[data-theme="dark"] .mobile-notice-feature {
    background: rgba(59, 130, 246, 0.15);
}

.mobile-notice-feature svg {
    color: var(--accent-secondary);
    flex-shrink: 0;
}

.mobile-notice-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 30px;
    width: 100%;
}

.mobile-notice-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 24px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    width: 100%;
    position: relative;
    overflow: hidden;
}

.mobile-notice-btn svg {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
}

.mobile-notice-btn-primary {
    background: linear-gradient(135deg, var(--accent-secondary), #60a5fa);
    color: #ffffff;
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.4);
}

.mobile-notice-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.5);
}

.mobile-notice-btn-primary:active {
    transform: translateY(0);
}

.mobile-notice-btn-secondary {
    position: relative;
    background: linear-gradient(135deg, var(--accent-secondary), #60a5fa);
    color: #ffffff;
    border: none;
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.4);
    overflow: hidden;
}

[data-theme="dark"] .mobile-notice-btn-secondary {
    background: linear-gradient(135deg, var(--accent-secondary), #60a5fa);
    color: #ffffff;
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.5);
}

/* 确保在亮色模式下按钮也正常显示 */
.mobile-notice:not([data-theme]) .mobile-notice-btn-secondary,
[data-theme="light"] .mobile-notice-btn-secondary {
    background: linear-gradient(135deg, var(--accent-secondary), #60a5fa);
    color: #ffffff;
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.4);
}

.mobile-notice-btn-secondary::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.mobile-notice-btn-secondary:hover::before {
    width: 300px;
    height: 300px;
}

.mobile-notice-btn-secondary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 28px rgba(59, 130, 246, 0.5);
}

.mobile-notice-btn-secondary:active {
    transform: translateY(-1px) scale(0.98);
}

.mobile-notice-footer {
    padding-top: 24px;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .mobile-notice-footer {
    border-top-color: rgba(255, 255, 255, 0.1);
}

.mobile-notice-footer p {
    font-size: 13px;
    color: var(--text-tertiary);
    margin: 0;
}

@media (max-width: 768px) {
    /* 移动端提示页面默认隐藏（已移除访问限制） */
    .mobile-notice {
        display: none;
    }

    /* 移动端允许显示所有内容 */
    /* 注释掉原有的隐藏规则，允许移动端访问 */

    /* 移动端导航栏样式 */
    .container {
        padding: 0 24px;
    }

    /* 移动端导航栏始终可见并固定在顶部 */
    .navbar {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(20px);
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        z-index: 1000;
        transform: translateY(0) !important;
    }

    [data-theme="dark"] .navbar {
        background: rgba(10, 10, 10, 0.95);
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    }

    /* 页面主体内容区域顶部留出导航栏空间 */
    .showcase-section,
    .features-fullscreen,
    .download-fullscreen,
    .subscription-fullscreen {
        padding-top: 76px; /* 导航栏高度 */
        min-height: auto;
        overflow-x: hidden;
    }
    
    /* 移动端减少顶部空白 */
    .features-fullscreen,
    .download-fullscreen,
    .subscription-fullscreen {
        padding-top: 76px; /* 保持导航栏空间 */
    }
    
    .features-fullscreen-container,
    .download-fullscreen-container,
    .subscription-fullscreen-container {
        margin-top: 0 !important;
    }

    .showcase-section {
        min-height: calc(100vh - 76px);
    }

    /* 特性页面移动端适配 */
    .features-fullscreen {
        height: auto !important;
        min-height: auto !important;
    }

    .features-fullscreen-container {
        flex-direction: column !important;
        padding: 0 !important;
        height: auto !important;
        min-height: auto !important;
    }

    .features-sidebar {
        width: 100% !important;
        padding: 4px 20px 8px !important;
        position: static !important;
        height: auto !important;
        max-width: none !important;
        min-height: auto !important;
    }

    .features-sidebar h1 {
        font-size: 24px !important;
        line-height: 1.2 !important;
        margin-bottom: 4px !important;
    }

    .features-sidebar p {
        font-size: 14px !important;
        margin-bottom: 0 !important;
        line-height: 1.4 !important;
    }

    .features-grid-container {
        width: 100% !important;
        padding: 8px 20px 20px !important;
        flex: 1 !important;
        overflow-y: visible !important;
        overflow-x: hidden !important;
    }

    .features-grid-wrapper {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 12px !important;
        padding: 0 !important;
        margin-bottom: 0 !important;
    }

    .features-grid-wrapper .feature-grid-item {
        margin-bottom: 0 !important;
        padding: 16px 12px !important;
        aspect-ratio: 1 / 0.9 !important;
    }
    
    .features-sidebar-description {
        margin-bottom: 20px !important;
    }
    
    .features-sidebar-highlights {
        margin-bottom: 20px !important;
    }
    
    .features-sidebar-actions {
        margin-top: 20px !important;
    }

    .features-grid {
        grid-template-columns: 1fr !important;
        gap: 10px !important;
        padding: 0 !important;
    }

    .feature-card {
        padding: 16px !important;
    }

    .feature-card h3 {
        font-size: 15px !important;
        margin-bottom: 6px !important;
    }

    .feature-card p {
        font-size: 13px !important;
        line-height: 1.4 !important;
    }

    /* 下载页面移动端适配 */
    .download-fullscreen {
        height: auto !important;
        min-height: auto !important;
    }

    .download-fullscreen-container {
        flex-direction: column !important;
        padding: 0 !important;
        height: auto !important;
        min-height: auto !important;
    }

    .download-sidebar {
        width: 100% !important;
        padding: 4px 20px 8px !important;
        position: static !important;
        height: auto !important;
        max-width: none !important;
        min-height: auto !important;
    }

    .download-sidebar h1 {
        font-size: 24px !important;
        margin-bottom: 4px !important;
        line-height: 1.2 !important;
    }

    .download-sidebar p {
        font-size: 14px !important;
        margin-bottom: 0 !important;
        line-height: 1.4 !important;
    }

    .download-content {
        width: 100% !important;
        padding: 8px 20px 20px !important;
        max-width: none !important;
        flex: 1 !important;
        overflow-y: visible !important;
        overflow-x: hidden !important;
    }
    
    .download-version-info {
        margin-bottom: 20px !important;
    }
    
    .download-meta-grid {
        grid-template-columns: 1fr !important;
        gap: 12px !important;
        margin-bottom: 20px !important;
    }
    
    .download-sidebar-actions {
        margin-top: 12px !important;
        gap: 8px !important;
    }

    .download-action-btn {
        padding: 10px 14px !important;
        font-size: 13px !important;
        min-height: auto !important;
    }

    .download-btn-content {
        gap: 8px !important;
    }

    .download-btn-icon {
        width: 18px !important;
        height: 18px !important;
        flex-shrink: 0 !important;
    }

    .download-btn-text {
        flex: 1 !important;
        min-width: 0 !important;
    }

    .download-btn-title {
        font-size: 13px !important;
        white-space: nowrap !important;
    }

    .download-btn-subtitle {
        font-size: 10px !important;
        white-space: nowrap !important;
    }
    
    .download-notes-card {
        max-height: none !important;
        overflow-y: visible !important;
    }

    .version-card {
        padding: 16px !important;
        margin-bottom: 10px !important;
    }

    .version-card h2 {
        font-size: 16px !important;
        margin-bottom: 8px !important;
    }

    .version-info {
        font-size: 13px !important;
    }

    .download-actions {
        flex-direction: column !important;
        gap: 8px !important;
    }

    .download-btn {
        width: 100% !important;
        padding: 10px !important;
        font-size: 14px !important;
    }

    .release-notes {
        font-size: 13px !important;
        line-height: 1.5 !important;
    }

    /* 订阅页面移动端适配 */
    .subscription-fullscreen {
        height: auto !important;
        min-height: auto !important;
    }

    .subscription-fullscreen-container {
        flex-direction: column !important;
        padding: 0 !important;
        height: auto !important;
        min-height: auto !important;
    }

    .subscription-sidebar {
        width: 100% !important;
        padding: 8px 20px 6px !important;
        position: static !important;
        height: auto !important;
        max-width: none !important;
        min-height: auto !important;
    }

    .subscription-sidebar h1 {
        font-size: 24px !important;
        margin-bottom: 2px !important;
        line-height: 1.2 !important;
    }

    .subscription-sidebar p {
        font-size: 12px !important;
        margin-bottom: 0 !important;
        line-height: 1.3 !important;
    }

    /* 隐藏冗余的描述文字和特性列表 */
    .subscription-sidebar-description {
        display: none !important;
    }

    .subscription-sidebar-highlights {
        display: none !important;
    }

    .subscription-sidebar-badge {
        font-size: 10px !important;
        padding: 4px 12px !important;
        margin-bottom: 6px !important;
    }

    .subscription-sidebar-subtitle {
        font-size: 12px !important;
        margin-bottom: 4px !important;
    }

    .subscription-sidebar-actions {
        margin-top: 12px !important;
        margin-bottom: 8px !important;
    }

    .subscription-action-btn {
        padding: 12px 20px !important;
        font-size: 14px !important;
    }

    .subscription-content {
        width: 100% !important;
        padding: 0 20px 20px !important;
        max-width: none !important;
        flex: 1 !important;
        overflow-y: auto !important;
        overflow-x: hidden !important;
    }

    /* 隐藏"请在应用内购买"提示 */
    .subscription-content-header {
        display: none !important;
    }

    .subscription-cards-wrapper {
        overflow-y: auto !important;
        padding: 0 !important;
        gap: 10px !important;
        display: grid !important;
        grid-template-columns: repeat(2, 1fr) !important;
        max-height: calc(100vh - 180px) !important;
    }

    .subscription-card {
        margin-bottom: 0 !important;
        padding: 12px 10px !important;
    }

    .subscription-card-header {
        margin-bottom: 6px !important;
        padding-bottom: 5px !important;
    }

    .subscription-plan-name {
        font-size: 14px !important;
        margin-bottom: 2px !important;
        font-weight: 700 !important;
    }

    .subscription-plan-period {
        font-size: 10px !important;
    }

    .subscription-price {
        margin-bottom: 6px !important;
        padding: 5px 3px !important;
    }

    .subscription-price-number {
        font-size: 24px !important;
        font-weight: 900 !important;
    }

    .subscription-price-unit {
        font-size: 11px !important;
    }

    .subscription-features {
        margin-bottom: 6px !important;
        gap: 3px !important;
    }

    .subscription-feature-item {
        font-size: 10px !important;
        padding: 1px 0 !important;
        line-height: 1.4 !important;
    }

    .subscription-feature-icon {
        width: 11px !important;
        height: 11px !important;
    }

    .subscription-btn {
        padding: 9px 14px !important;
        font-size: 12px !important;
        font-weight: 600 !important;
    }

    .pricing-cards {
        grid-template-columns: 1fr !important;
        gap: 12px !important;
    }

    .pricing-card {
        padding: 20px 16px !important;
    }

    .pricing-card h3 {
        font-size: 18px !important;
        margin-bottom: 8px !important;
    }

    .pricing-card .price {
        font-size: 28px !important;
        margin: 8px 0 !important;
    }

    .pricing-card ul {
        margin: 12px 0 !important;
    }

    .pricing-card ul li {
        font-size: 13px !important;
        line-height: 1.6 !important;
        margin-bottom: 6px !important;
    }

    .pricing-card button {
        font-size: 14px !important;
        padding: 10px !important;
    }

    /* 导航栏内容布局 */
    .nav-content {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 16px 0;
        position: relative;
    }

    /* 显示移动端菜单按钮 - 小巧设计 */
    .mobile-menu-toggle {
        display: flex !important; /* 强制显示 */
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 3px;
        position: relative;
        left: auto;
        margin-left: 12px;
        order: 1;
        width: 30px;
        height: 30px;
        padding: 6px;
        border-radius: 6px;
        transition: all 0.3s ease;
        background: transparent;
        border: none;
        cursor: pointer;
        z-index: 1001;
    }

    .mobile-menu-toggle:active {
        background: rgba(59, 130, 246, 0.1);
    }

    /* 汉堡图标样式 - 简洁设计 */
    .mobile-menu-toggle span {
        display: block;
        width: 18px;
        height: 2px;
        background-color: var(--text-primary);
        border-radius: 1px;
        transition: all 0.3s ease;
        transform-origin: center;
    }

    /* 汉堡菜单激活状态 - X 动画 */
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: translateY(5px) rotate(45deg);
    }

    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-toggle.active span:nth-child(3) {
        transform: translateY(-5px) rotate(-45deg);
    }

    /* Logo 居中 */
    .logo {
        position: absolute;
        left: 50%;
        transform: translateX(-50%);
        order: 2;
    }

    .logo h1 {
        font-size: 20px;
        letter-spacing: 1.5px;
    }

    /* 移动端导航链接样式 - 紧凑侧边栏 */
    .nav-links {
        position: fixed;
        top: 0;
        right: -260px;
        width: 260px;
        height: 100vh;
        background: var(--bg-primary);
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
        padding: 80px 16px 20px;
        box-shadow: -4px 0 16px rgba(0, 0, 0, 0.1);
        transition: right 0.3s ease;
        z-index: 999;
        overflow-y: auto;
        order: 3;
    }

    [data-theme="dark"] .nav-links {
        background: var(--bg-primary);
        box-shadow: -4px 0 16px rgba(0, 0, 0, 0.3);
    }

    .nav-links.active {
        right: 0;
    }

    /* 菜单项 & 反馈按钮样式 - 完全对齐 */
    .nav-link,
    .feedback-btn {
        display: block;
        width: 100%;
        padding: 12px 16px;
        border-radius: 8px;
        text-align: left;
        margin: 0;
        font-size: 15px;
        font-weight: 500;
        background: transparent;
        color: var(--text-primary);
        text-decoration: none;
        transition: all 0.2s ease;
        box-sizing: border-box;
        line-height: 1.5;
        font-family: inherit;
        -webkit-appearance: none;
        appearance: none;
    }

    /* 链接与按钮点击态保持一致 */
    .nav-link:active,
    .feedback-btn:active {
        background: rgba(59, 130, 246, 0.1);
    }

    .nav-link.active {
        background: rgba(59, 130, 246, 0.1);
        color: var(--accent-secondary);
    }

    .nav-link::after {
        display: none;
    }

    /* 分割线 */
    .nav-links::before {
        content: '';
        display: block;
        width: 100%;
        height: 1px;
        background: var(--border-color);
        margin: 12px 0;
    }

    /* 语言选择器 */
    .language-selector {
        width: 100%;
        margin-top: 0;
        position: relative;
    }

    .language-toggle {
        width: 100%;
        justify-content: flex-start;
        height: auto;
        padding: 14px 16px;
        border-radius: 8px;
        background: transparent;
        border: none;
        transition: all 0.2s ease;
        font-size: 15px;
    }

    .language-toggle:active {
        background: rgba(59, 130, 246, 0.1);
    }

    .language-dropdown {
        position: static;
        width: 100%;
        margin-top: 4px;
        transform: none;
        padding: 0;
        border: none;
        background: transparent;
        box-shadow: none;
    }

    .language-option {
        padding: 12px 16px;
        margin-bottom: 2px;
        border-radius: 6px;
        font-size: 14px;
        background: transparent;
    }

    .language-option:active {
        background: rgba(59, 130, 246, 0.1);
    }

    /* 主题切换器 */
    .theme-toggle {
        width: 100%;
        margin-top: 4px;
        height: auto;
        padding: 14px 16px;
        border-radius: 8px;
        justify-content: flex-start;
        background: transparent;
        border: none;
        transition: all 0.2s ease;
    }

    .theme-toggle:active {
        background: rgba(59, 130, 246, 0.1);
    }

    .theme-icon {
        width: 16px;
        height: 16px;
    }

    /* 移动端菜单遮罩层 */
    .mobile-menu-overlay {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        backdrop-filter: blur(4px);
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s ease, visibility 0.3s ease;
        z-index: 998;
    }

    .mobile-menu-overlay.active {
        opacity: 1;
        visibility: visible;
    }

    /* 移动端弹窗样式优化 */
    .modal {
        z-index: 10001;
        padding: 16px;
    }
    
    .modal-content {
        max-width: 100%;
        max-height: 90vh;
        border-radius: 20px;
        margin: 10px;
    }
    
    .modal-header {
        padding: 20px;
    }
    
    .modal-header h3 {
        font-size: 20px;
    }
    
    .modal-body {
        padding: 20px;
    }
    
    /* License Modal 手机端样式优化，与 PC 版本保持一致但适配手机尺寸 */
    #licenseModal .modal-content {
        max-width: calc(100% - 20px);
        max-height: 90vh;
        border-radius: 16px;
        overflow-y: auto;
    }
    
    #licenseModal .modal-header {
        padding: 20px 20px;
        border-bottom: 1px solid var(--border-color);
    }
    
    #licenseModal .modal-header h3 {
        font-size: 1.25rem;
        color: var(--text-color);
    }
    
    #licenseModal .modal-body {
        padding: 20px 20px 25px;
    }
    
    /* 手机端验证面板和表单样式 */
    #licenseModal .developer-verify-panel,
    #licenseModal #licenseForm {
        display: block;
    }
    
    #licenseModal .developer-verify-panel .verify-notice {
        margin-bottom: 20px;
    }
    
    #licenseModal .developer-verify-panel .verify-notice h4 {
        font-size: 18px;
        font-weight: 700;
        color: var(--text-primary);
        margin: 0 0 10px 0;
    }
    
    #licenseModal .developer-verify-panel .verify-notice p {
        font-size: 13px;
        color: var(--text-secondary);
        line-height: 1.5;
        margin: 0;
    }
    
    #licenseModal .license-notice {
        padding: 15px 18px;
        margin-bottom: 25px;
        background: rgba(59, 130, 246, 0.08);
        border: 1px solid rgba(59, 130, 246, 0.2);
        border-radius: 8px;
    }
    
    [data-theme="dark"] #licenseModal .license-notice {
        background: rgba(59, 130, 246, 0.12);
        border-color: rgba(59, 130, 246, 0.25);
    }
    
    #licenseModal .license-notice p {
        font-size: 14px;
        line-height: 1.6;
        color: rgba(59, 130, 246, 1);
        margin: 0;
    }
    
    [data-theme="dark"] #licenseModal .license-notice p {
        color: rgba(96, 165, 250, 1);
    }
    
    /* 表单样式保持一致 */
    #licenseModal .form-group {
        margin-bottom: 20px;
    }
    
    #licenseModal .form-group label {
        display: block;
        margin-bottom: 8px;
        color: var(--text-color);
        font-weight: 500;
        font-size: 0.95rem;
    }
    
    #licenseModal .form-control {
        width: 100%;
        padding: 12px 15px;
        border: 2px solid var(--border-color);
        border-radius: 8px;
        font-size: 1rem;
        color: var(--text-color);
        background: var(--bg-color);
        transition: all 0.3s ease;
        font-family: inherit;
        box-sizing: border-box;
    }
    
    #licenseModal .form-control:focus {
        outline: none;
        border-color: #667eea;
        box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    }
    
    #licenseModal .form-hint {
        display: block;
        margin-top: 5px;
        font-size: 0.85rem;
        color: var(--text-secondary);
    }
    
    #licenseModal .btn-parse {
        margin-top: 10px;
        padding: 8px 20px;
        background: linear-gradient(135deg, var(--accent-secondary), #60a5fa);
        color: white;
        border: none;
        border-radius: 6px;
        cursor: pointer;
        font-size: 0.9rem;
        font-weight: 500;
        transition: all 0.3s ease;
        box-shadow: 0 3px 12px rgba(59, 130, 246, 0.3);
    }
    
    #licenseModal .form-divider {
        text-align: center;
        margin: 25px 0;
        position: relative;
    }
    
    #licenseModal .form-divider::before {
        content: '';
        position: absolute;
        top: 50%;
        left: 0;
        right: 0;
        height: 1px;
        background: var(--border-color);
    }
    
    #licenseModal .form-divider span {
        position: relative;
        background: var(--bg-color);
        padding: 0 15px;
        color: var(--text-secondary);
        font-size: 0.9rem;
    }
    
    #licenseModal .form-actions {
        display: flex;
        gap: 12px;
        margin-top: 25px;
    }
    
    #licenseModal .btn-cancel,
    #licenseModal .btn-submit {
        flex: 1;
        padding: 12px 24px;
        border-radius: 8px;
        font-size: 1rem;
        font-weight: 600;
        cursor: pointer;
        transition: all 0.3s ease;
        border: none;
    }
    
    #licenseModal .btn-cancel {
        background: var(--bg-tertiary);
        color: var(--text-primary);
    }
    
    #licenseModal .btn-cancel:hover {
        background: var(--hover-bg);
    }
    
    #licenseModal .btn-submit {
        background: linear-gradient(135deg, var(--accent-secondary), #60a5fa);
        color: #ffffff;
        box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
    }
    
    #licenseModal .btn-submit:hover {
        transform: translateY(-2px);
        box-shadow: 0 6px 16px rgba(59, 130, 246, 0.4);
    }
    
    body {
        overflow: hidden;
        height: 100vh;
        position: fixed;
        width: 100%;
    }
    
    .mobile-notice-content {
        padding: 40px 24px;
        margin: 20px auto;
        min-height: auto;
    }
    
    .mobile-notice-icon {
        margin-bottom: 24px;
    }
    
    .mobile-notice-icon svg {
        width: 64px;
        height: 64px;
    }
    
    .mobile-notice-title {
        font-size: 22px;
        margin-bottom: 12px;
    }
    
    .mobile-notice-description {
        font-size: 14px;
        margin-bottom: 32px;
    }
    
    .mobile-notice-features {
        gap: 16px;
        margin-bottom: 28px;
    }
    
    .mobile-notice-feature {
        padding: 14px 16px;
        font-size: 14px;
    }
    
    .mobile-notice-actions {
        gap: 10px;
        margin-bottom: 24px;
    }
    
    .mobile-notice-btn {
        padding: 14px 20px;
        font-size: 15px;
    }
    
    .mobile-notice-btn svg {
        width: 18px;
        height: 18px;
    }
    
    .mobile-notice-footer {
        padding-top: 20px;
    }
    
    .mobile-notice-footer p {
        font-size: 12px;
    }
}

@media (max-width: 480px) {
    .mobile-notice {
        padding: 16px;
    }
    
    .mobile-notice-content {
        padding: 32px 20px;
        border-radius: 20px;
        margin: 16px auto;
    }
    
    .mobile-notice-icon {
        margin-bottom: 20px;
    }
    
    .mobile-notice-icon svg {
        width: 56px;
        height: 56px;
    }
    
    .mobile-notice-title {
        font-size: 20px;
        margin-bottom: 10px;
    }
    
    .mobile-notice-description {
        font-size: 13px;
        margin-bottom: 28px;
        line-height: 1.5;
    }
    
    .mobile-notice-features {
        gap: 12px;
        margin-bottom: 24px;
    }
    
    .mobile-notice-feature {
        padding: 12px 14px;
        font-size: 13px;
        gap: 10px;
    }
    
    .mobile-notice-feature svg {
        width: 20px;
        height: 20px;
    }
    
    .mobile-notice-actions {
        gap: 10px;
        margin-bottom: 20px;
    }
    
    .mobile-notice-btn {
        padding: 14px 18px;
        font-size: 14px;
    }
    
    .mobile-notice-btn svg {
        width: 18px;
        height: 18px;
    }
    
    .mobile-notice-footer {
        padding-top: 20px;
    }
    
    .mobile-notice-footer p {
        font-size: 11px;
        line-height: 1.4;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .nav-content {
        padding: 16px 0;
    }
    
    .logo h1 {
        font-size: 20px;
        letter-spacing: 1px;
    }
    
    .nav-links {
        padding: 16px;
    }
    
    .nav-link,
    .feedback-btn {
        font-size: 14px;
        padding: 14px 16px;
    }
    
    .language-toggle {
        min-width: auto;
        padding: 0;
        font-size: 14px;
    }
    
    .theme-toggle {
        width: auto;
        height: auto;
        padding: 0;
    }
}

/* ==================== 导航栏 ==================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: transparent;
    backdrop-filter: none;
    z-index: 1000;
    transform: translateY(0);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: none;
    border-bottom: none;
}

.navbar .container {
    padding: 0;
}

.navbar.visible {
    transform: translateY(0);
}

[data-theme="dark"] .navbar {
    background: transparent;
    border-bottom: none;
    box-shadow: none;
}

.navbar.scrolled {
    background: transparent;
    backdrop-filter: none;
    box-shadow: none;
}

[data-theme="dark"] .navbar.scrolled {
    background: transparent;
    box-shadow: none;
}

/* 触发区域 - 顶部20px的隐藏触发条 */
.navbar-trigger {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 20px;
    z-index: 999;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 28px 0;
    position: relative;
}

/* 移动端菜单按钮 */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 32px;
    height: 32px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
    position: absolute;
    left: 0;
}

.mobile-menu-toggle span {
    width: 100%;
    height: 3px;
    background-color: var(--text-primary);
    border-radius: 3px;
    transition: all 0.3s ease;
    transform-origin: center;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: translateY(10px) rotate(45deg);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: translateY(-10px) rotate(-45deg);
}

.logo h1 {
    font-size: 28px;
    font-weight: 700;
    letter-spacing: 2.5px;
    color: var(--accent-primary);
}

.nav-links {
    display: flex;
    align-items: baseline;
    gap: 45px;
}

.nav-links > * {
    flex-shrink: 0;
}

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    letter-spacing: 1px;
    position: relative;
    text-transform: uppercase;
    transition: color 0.3s ease;
    display: inline-block;
    vertical-align: baseline;
    line-height: 1;
    white-space: nowrap;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-secondary);
    transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link:hover {
    color: var(--accent-secondary);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-link.active {
    color: var(--accent-secondary);
}

.nav-link.active::after {
    width: 100%;
}

/* 反馈按钮 */
.feedback-btn {
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 15px;
    font-weight: 500;
    letter-spacing: 1px;
    text-transform: uppercase;
    cursor: pointer;
    position: relative;
    padding: 0;
    margin: 0;
    transition: color 0.3s ease;
    display: inline-block;
    vertical-align: baseline;
    line-height: 1;
    height: auto;
    font-family: inherit;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    flex-shrink: 0;
    text-indent: 0;
    text-decoration: none;
    white-space: nowrap;
}

.feedback-btn::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-secondary);
    transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.feedback-btn:hover {
    color: var(--accent-secondary);
}

.feedback-btn:hover::after {
    width: 100%;
}

/* 语言选择器 */
.language-selector {
    position: relative;
}

/* 移动端侧边栏内的反馈按钮，强制与菜单项完全一致（压轴覆盖）
   只在移动端断点生效，避免桌面端被覆盖 */
@media (max-width: 768px) {
    .nav-links .feedback-btn {
        display: block;
        width: 100%;
        padding: 12px 16px;
        border-radius: 8px;
        text-align: left;
        margin: 0;
        font-size: 15px;
        font-weight: 500;
        background: transparent;
        color: var(--text-primary);
        text-decoration: none;
        box-sizing: border-box;
        line-height: 1.5;
    }
}

.language-toggle {
    min-width: 65px;
    height: 48px;
    border-radius: 24px;
    border: 2px solid var(--border-color);
    background-color: transparent;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 15px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--text-primary);
}

.language-toggle:hover {
    border-color: var(--accent-secondary);
    background-color: var(--bg-secondary);
}

.language-dropdown {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px) saturate(180%);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 12px;
    padding: 8px;
    min-width: 150px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    z-index: 100;
}

[data-theme="dark"] .language-dropdown {
    background: rgba(26, 26, 26, 0.9);
    border: 2px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.language-dropdown.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.language-option {
    width: 100%;
    padding: 10px 15px;
    border: none;
    background-color: transparent;
    color: var(--text-primary);
    font-size: 14px;
    text-align: left;
    cursor: pointer;
    transition: all 0.2s ease;
    border-radius: 4px;
}

.language-option:hover {
    background-color: var(--bg-secondary);
    color: var(--accent-secondary);
}

.language-option.active {
    background-color: var(--accent-secondary);
    color: #ffffff;
}

.theme-toggle {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    background-color: transparent;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.theme-toggle:hover {
    transform: rotate(180deg);
    border-color: var(--accent-secondary);
}

.theme-icon {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background-color: var(--accent-primary);
    position: relative;
    transition: all 0.3s ease;
}

[data-theme="dark"] .theme-icon {
    background-color: transparent;
    box-shadow: inset 0 0 0 2px var(--accent-primary);
}

/* ==================== 英雄轮播区域 ==================== */
.hero-carousel {
    position: relative;
    height: 100vh;
    min-height: 600px;
    overflow: hidden;
}

.carousel-container {
    position: relative;
    width: 100%;
    height: 100%;
}

.carousel-slides {
    position: relative;
    width: 100%;
    height: 100%;
}

.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.6s ease, visibility 0.6s ease;
    /* 启用硬件加速，防止闪烁 */
    will-change: opacity;
    transform: translateZ(0);
    backface-visibility: hidden;
    -webkit-font-smoothing: antialiased;
}

.carousel-slide.active {
    opacity: 1;
    visibility: visible;
    z-index: 2;
}

/* 第1张 - 白色背景 + 红色装饰 */
.carousel-slide:nth-child(1) {
    background: linear-gradient(135deg, #ffffff 0%, #fff5f5 100%);
}

/* 第2张 - 蓝色背景 */
.carousel-slide:nth-child(2) {
    background: linear-gradient(135deg, #E3F2FD 0%, #BBDEFB 100%);
}

/* 第3张 - 绿色背景 */
.carousel-slide:nth-child(3) {
    background: linear-gradient(135deg, #E8F5E9 0%, #C8E6C9 100%);
}

/* 第1张装饰元素 - 增强晕染 */
.carousel-slide:nth-child(1)::before {
    content: '';
    position: absolute;
    top: 10%;
    right: 8%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255, 107, 107, 0.22) 0%, rgba(255, 107, 107, 0.08) 50%, transparent 70%);
    border-radius: 50%;
    z-index: 1;
    animation: float 8s ease-in-out infinite;
    filter: blur(40px);
    box-shadow: 0 0 120px rgba(255, 107, 107, 0.3);
}

.carousel-slide:nth-child(1)::after {
    content: '';
    position: absolute;
    bottom: 10%;
    left: 5%;
    width: 400px;
    height: 400px;
    background: rgba(78, 205, 196, 0.18);
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    z-index: 1;
    animation: morphShape 12s ease-in-out infinite;
    filter: blur(35px);
    box-shadow: 0 0 100px rgba(78, 205, 196, 0.25);
}

/* 第2张装饰元素 - 增强发光 */
.carousel-slide:nth-child(2)::before {
    content: '';
    position: absolute;
    top: 15%;
    right: 10%;
    width: 500px;
    height: 500px;
    background: rgba(33, 150, 243, 0.25);
    border-radius: 50%;
    z-index: 1;
    animation: pulse 6s ease-in-out infinite;
    filter: blur(50px);
    box-shadow: 0 0 150px rgba(33, 150, 243, 0.45), inset 0 0 80px rgba(33, 150, 243, 0.2);
}

.carousel-slide:nth-child(2)::after {
    content: '';
    position: absolute;
    bottom: 12%;
    left: 8%;
    width: 350px;
    height: 350px;
    background: rgba(25, 118, 210, 0.22);
    border-radius: 20px;
    transform: rotate(25deg);
    z-index: 1;
    animation: rotate360 20s linear infinite;
    filter: blur(30px);
    box-shadow: 0 0 90px rgba(25, 118, 210, 0.35);
}

/* 第3张装饰元素 - 自然光晕 */
.carousel-slide:nth-child(3)::before {
    content: '';
    position: absolute;
    top: 12%;
    left: 10%;
    width: 450px;
    height: 450px;
    background: rgba(76, 175, 80, 0.28);
    border-radius: 50%;
    z-index: 1;
    animation: float 10s ease-in-out infinite reverse;
    filter: blur(45px);
    box-shadow: 0 0 130px rgba(76, 175, 80, 0.4);
}

.carousel-slide:nth-child(3)::after {
    content: '';
    position: absolute;
    bottom: 10%;
    right: 10%;
    width: 380px;
    height: 380px;
    background: rgba(56, 142, 60, 0.2);
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    transform: rotate(-15deg);
    z-index: 1;
    animation: morphShape 15s ease-in-out infinite reverse;
    filter: blur(38px);
    box-shadow: 0 0 95px rgba(56, 142, 60, 0.32);
}

/* 暗色主题 */
[data-theme="dark"] .carousel-slide:nth-child(1) {
    background: linear-gradient(135deg, #1a1a1a 0%, #2a1a1a 100%);
}

[data-theme="dark"] .carousel-slide:nth-child(1)::before {
    background: radial-gradient(circle, rgba(255, 107, 107, 0.35) 0%, rgba(255, 107, 107, 0.18) 50%, transparent 70%);
    filter: blur(50px);
    box-shadow: 0 0 180px rgba(255, 107, 107, 0.45);
}

[data-theme="dark"] .carousel-slide:nth-child(1)::after {
    background: rgba(78, 205, 196, 0.28);
    filter: blur(45px);
    box-shadow: 0 0 140px rgba(78, 205, 196, 0.38);
}

[data-theme="dark"] .carousel-slide:nth-child(2) {
    background: linear-gradient(135deg, #1E3A5F 0%, #0D47A1 100%);
}

[data-theme="dark"] .carousel-slide:nth-child(2)::before {
    background: rgba(33, 150, 243, 0.38);
    filter: blur(60px);
    box-shadow: 0 0 200px rgba(33, 150, 243, 0.55), inset 0 0 100px rgba(33, 150, 243, 0.3);
}

[data-theme="dark"] .carousel-slide:nth-child(2)::after {
    background: rgba(25, 118, 210, 0.32);
    filter: blur(40px);
    box-shadow: 0 0 120px rgba(25, 118, 210, 0.45);
}

[data-theme="dark"] .carousel-slide:nth-child(3) {
    background: linear-gradient(135deg, #1B4332 0%, #2E7D32 100%);
}

[data-theme="dark"] .carousel-slide:nth-child(3)::before {
    background: rgba(76, 175, 80, 0.4);
    filter: blur(55px);
    box-shadow: 0 0 170px rgba(76, 175, 80, 0.5);
}

[data-theme="dark"] .carousel-slide:nth-child(3)::after {
    background: rgba(56, 142, 60, 0.3);
    filter: blur(48px);
    box-shadow: 0 0 130px rgba(56, 142, 60, 0.42);
}

/* 动画关键帧 */
@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-30px);
    }
}

@keyframes morphShape {
    0%, 100% {
        border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
        transform: rotate(0deg);
    }
    25% {
        border-radius: 58% 42% 75% 25% / 76% 46% 54% 24%;
        transform: rotate(45deg);
    }
    50% {
        border-radius: 50% 50% 33% 67% / 55% 27% 73% 45%;
        transform: rotate(90deg);
    }
    75% {
        border-radius: 33% 67% 58% 42% / 63% 68% 32% 37%;
        transform: rotate(135deg);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.18;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.25;
    }
}

@keyframes rotate360 {
    from {
        transform: rotate(25deg);
    }
    to {
        transform: rotate(385deg);
    }
}

/* ==================== 装饰元素容器 ==================== */
.slide-decorations {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
}

/* 网格装饰 */
.decoration-grid {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0.3;
}

/* 第1张 - 对角线网格 */
.carousel-slide:nth-child(1) .decoration-grid {
    background-image:
        repeating-linear-gradient(45deg, transparent, transparent 50px, rgba(255, 107, 107, 0.05) 50px, rgba(255, 107, 107, 0.05) 51px),
        repeating-linear-gradient(-45deg, transparent, transparent 50px, rgba(78, 205, 196, 0.05) 50px, rgba(78, 205, 196, 0.05) 51px);
    animation: gridMove 30s linear infinite;
}

/* 第2张 - 垂直网格 */
.carousel-slide:nth-child(2) .decoration-grid {
    background-image:
        repeating-linear-gradient(90deg, transparent, transparent 80px, rgba(33, 150, 243, 0.08) 80px, rgba(33, 150, 243, 0.08) 81px),
        repeating-linear-gradient(0deg, transparent, transparent 80px, rgba(33, 150, 243, 0.06) 80px, rgba(33, 150, 243, 0.06) 81px);
}

/* 第3张 - 蜂窝网格效果 */
.carousel-slide:nth-child(3) .decoration-grid {
    background-image:
        repeating-linear-gradient(0deg, transparent, transparent 60px, rgba(76, 175, 80, 0.06) 60px, rgba(76, 175, 80, 0.06) 61px),
        repeating-linear-gradient(60deg, transparent, transparent 60px, rgba(56, 142, 60, 0.06) 60px, rgba(56, 142, 60, 0.06) 61px),
        repeating-linear-gradient(120deg, transparent, transparent 60px, rgba(76, 175, 80, 0.06) 60px, rgba(76, 175, 80, 0.06) 61px);
}

@keyframes gridMove {
    0% {
        transform: translate(0, 0);
    }
    100% {
        transform: translate(50px, 50px);
    }
}

/* 点阵装饰 */
.decoration-dots {
    position: absolute;
    width: 100%;
    height: 100%;
}

.carousel-slide:nth-child(1) .decoration-dots {
    background-image: radial-gradient(circle, rgba(255, 107, 107, 0.15) 2px, transparent 2px);
    background-size: 40px 40px;
    background-position: 20px 20px;
    animation: dotsFade 8s ease-in-out infinite;
}

.carousel-slide:nth-child(2) .decoration-dots {
    background-image: radial-gradient(circle, rgba(33, 150, 243, 0.12) 2px, transparent 2px);
    background-size: 50px 50px;
    background-position: 0 0;
    animation: dotsFade 10s ease-in-out infinite;
}

.carousel-slide:nth-child(3) .decoration-dots {
    background-image: radial-gradient(circle, rgba(76, 175, 80, 0.12) 2px, transparent 2px);
    background-size: 45px 45px;
    background-position: 10px 10px;
    animation: dotsFade 9s ease-in-out infinite;
}

@keyframes dotsFade {
    0%, 100% {
        opacity: 0.3;
    }
    50% {
        opacity: 0.6;
    }
}

/* 光晕装饰 */
.decoration-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    animation: glowPulse 8s ease-in-out infinite;
}

/* 第1张光晕 - 红色和青色 */
.carousel-slide:nth-child(1) .decoration-glow-1 {
    top: 20%;
    right: 15%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255, 107, 107, 0.4), rgba(255, 107, 107, 0.1), transparent);
}

.carousel-slide:nth-child(1) .decoration-glow-2 {
    bottom: 15%;
    left: 10%;
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(78, 205, 196, 0.35), rgba(78, 205, 196, 0.1), transparent);
    animation-delay: 2.7s;
}

.carousel-slide:nth-child(1) .decoration-glow-3 {
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(255, 182, 193, 0.25), transparent);
    animation-delay: 5.4s;
}

.carousel-slide:nth-child(1) .decoration-glow-4 {
    top: 35%;
    left: 20%;
    width: 380px;
    height: 380px;
    background: radial-gradient(circle, rgba(186, 104, 200, 0.38), rgba(186, 104, 200, 0.12), transparent);
    animation-delay: 1.8s;
}

.carousel-slide:nth-child(1) .decoration-glow-5 {
    bottom: 25%;
    right: 22%;
    width: 320px;
    height: 320px;
    background: radial-gradient(circle, rgba(255, 152, 0, 0.32), rgba(255, 152, 0, 0.1), transparent);
    animation-delay: 4.2s;
}

/* 第2张光晕 - 蓝色系 */
.carousel-slide:nth-child(2) .decoration-glow-1 {
    top: 25%;
    left: 12%;
    width: 450px;
    height: 450px;
    background: radial-gradient(circle, rgba(33, 150, 243, 0.45), rgba(33, 150, 243, 0.15), transparent);
}

.carousel-slide:nth-child(2) .decoration-glow-2 {
    bottom: 20%;
    right: 15%;
    width: 380px;
    height: 380px;
    background: radial-gradient(circle, rgba(25, 118, 210, 0.4), rgba(25, 118, 210, 0.12), transparent);
    animation-delay: 3s;
}

.carousel-slide:nth-child(2) .decoration-glow-3 {
    top: 45%;
    right: 30%;
    width: 320px;
    height: 320px;
    background: radial-gradient(circle, rgba(100, 181, 246, 0.3), transparent);
    animation-delay: 6s;
}

.carousel-slide:nth-child(2) .decoration-glow-4 {
    top: 30%;
    right: 12%;
    width: 360px;
    height: 360px;
    background: radial-gradient(circle, rgba(0, 188, 212, 0.36), rgba(0, 188, 212, 0.11), transparent);
    animation-delay: 2.2s;
}

.carousel-slide:nth-child(2) .decoration-glow-5 {
    bottom: 28%;
    left: 25%;
    width: 340px;
    height: 340px;
    background: radial-gradient(circle, rgba(156, 39, 176, 0.34), rgba(156, 39, 176, 0.1), transparent);
    animation-delay: 4.8s;
}

/* 第3张光晕 - 绿色系 */
.carousel-slide:nth-child(3) .decoration-glow-1 {
    top: 18%;
    right: 18%;
    width: 420px;
    height: 420px;
    background: radial-gradient(circle, rgba(76, 175, 80, 0.42), rgba(76, 175, 80, 0.14), transparent);
}

.carousel-slide:nth-child(3) .decoration-glow-2 {
    bottom: 22%;
    left: 15%;
    width: 360px;
    height: 360px;
    background: radial-gradient(circle, rgba(56, 142, 60, 0.38), rgba(56, 142, 60, 0.1), transparent);
    animation-delay: 3.5s;
}

.carousel-slide:nth-child(3) .decoration-glow-3 {
    top: 48%;
    left: 45%;
    width: 340px;
    height: 340px;
    background: radial-gradient(circle, rgba(129, 199, 132, 0.28), transparent);
    animation-delay: 7s;
}

.carousel-slide:nth-child(3) .decoration-glow-4 {
    top: 32%;
    left: 18%;
    width: 370px;
    height: 370px;
    background: radial-gradient(circle, rgba(255, 235, 59, 0.35), rgba(255, 235, 59, 0.1), transparent);
    animation-delay: 2.5s;
}

.carousel-slide:nth-child(3) .decoration-glow-5 {
    bottom: 26%;
    right: 20%;
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(38, 198, 218, 0.33), rgba(38, 198, 218, 0.09), transparent);
    animation-delay: 5.1s;
}

@keyframes glowPulse {
    0%, 100% {
        opacity: 0.6;
        transform: scale(1);
    }
    50% {
        opacity: 1;
        transform: scale(1.15);
    }
}

/* 圆形装饰 - 增强光晕 */
.decoration-circle {
    position: absolute;
    border-radius: 50%;
    border: 2px solid currentColor;
    animation: circleExpand 6s ease-in-out infinite;
    box-shadow: 0 0 40px currentColor, inset 0 0 30px currentColor;
    filter: blur(1px);
}

/* 第1张圆形 */
.carousel-slide:nth-child(1) .decoration-circle-1 {
    top: 20%;
    right: 15%;
    width: 180px;
    height: 180px;
    color: rgba(255, 107, 107, 0.3);
}

.carousel-slide:nth-child(1) .decoration-circle-2 {
    bottom: 25%;
    left: 20%;
    width: 140px;
    height: 140px;
    color: rgba(78, 205, 196, 0.3);
    animation-delay: 3s;
}

/* 第2张圆形 */
.carousel-slide:nth-child(2) .decoration-circle-1 {
    top: 10%;
    left: 12%;
    width: 200px;
    height: 200px;
    color: rgba(33, 150, 243, 0.35);
}

.carousel-slide:nth-child(2) .decoration-circle-2 {
    bottom: 18%;
    right: 18%;
    width: 160px;
    height: 160px;
    color: rgba(25, 118, 210, 0.35);
    animation-delay: 3s;
}

/* 第3张圆形 */
.carousel-slide:nth-child(3) .decoration-circle-1 {
    top: 15%;
    right: 20%;
    width: 190px;
    height: 190px;
    color: rgba(76, 175, 80, 0.35);
}

.carousel-slide:nth-child(3) .decoration-circle-2 {
    bottom: 20%;
    left: 15%;
    width: 150px;
    height: 150px;
    color: rgba(56, 142, 60, 0.35);
    animation-delay: 3s;
}

@keyframes circleExpand {
    0%, 100% {
        transform: scale(1);
        opacity: 0.4;
    }
    50% {
        transform: scale(1.2);
        opacity: 0.7;
    }
}

/* 暗色主题适配 */
[data-theme="dark"] .decoration-grid {
    opacity: 0.5;
}

[data-theme="dark"] .carousel-slide:nth-child(1) .decoration-grid {
    background-image:
        repeating-linear-gradient(45deg, transparent, transparent 50px, rgba(255, 107, 107, 0.08) 50px, rgba(255, 107, 107, 0.08) 51px),
        repeating-linear-gradient(-45deg, transparent, transparent 50px, rgba(78, 205, 196, 0.08) 50px, rgba(78, 205, 196, 0.08) 51px);
}

[data-theme="dark"] .carousel-slide:nth-child(2) .decoration-grid {
    background-image:
        repeating-linear-gradient(90deg, transparent, transparent 80px, rgba(33, 150, 243, 0.12) 80px, rgba(33, 150, 243, 0.12) 81px),
        repeating-linear-gradient(0deg, transparent, transparent 80px, rgba(33, 150, 243, 0.1) 80px, rgba(33, 150, 243, 0.1) 81px);
}

[data-theme="dark"] .carousel-slide:nth-child(3) .decoration-grid {
    background-image:
        repeating-linear-gradient(0deg, transparent, transparent 60px, rgba(76, 175, 80, 0.1) 60px, rgba(76, 175, 80, 0.1) 61px),
        repeating-linear-gradient(60deg, transparent, transparent 60px, rgba(56, 142, 60, 0.1) 60px, rgba(56, 142, 60, 0.1) 61px),
        repeating-linear-gradient(120deg, transparent, transparent 60px, rgba(76, 175, 80, 0.1) 60px, rgba(76, 175, 80, 0.1) 61px);
}

[data-theme="dark"] .carousel-slide:nth-child(1) .decoration-dots {
    background-image: radial-gradient(circle, rgba(255, 107, 107, 0.25) 2px, transparent 2px);
}

[data-theme="dark"] .carousel-slide:nth-child(2) .decoration-dots {
    background-image: radial-gradient(circle, rgba(33, 150, 243, 0.2) 2px, transparent 2px);
}

[data-theme="dark"] .carousel-slide:nth-child(3) .decoration-dots {
    background-image: radial-gradient(circle, rgba(76, 175, 80, 0.2) 2px, transparent 2px);
}

/* 暗色主题光晕增强 */
[data-theme="dark"] .carousel-slide:nth-child(1) .decoration-glow-1 {
    background: radial-gradient(circle, rgba(255, 107, 107, 0.55), rgba(255, 107, 107, 0.18), transparent);
    filter: blur(70px);
}

[data-theme="dark"] .carousel-slide:nth-child(1) .decoration-glow-2 {
    background: radial-gradient(circle, rgba(78, 205, 196, 0.5), rgba(78, 205, 196, 0.15), transparent);
    filter: blur(70px);
}

[data-theme="dark"] .carousel-slide:nth-child(1) .decoration-glow-3 {
    background: radial-gradient(circle, rgba(255, 182, 193, 0.4), transparent);
    filter: blur(70px);
}

[data-theme="dark"] .carousel-slide:nth-child(1) .decoration-glow-4 {
    background: radial-gradient(circle, rgba(186, 104, 200, 0.52), rgba(186, 104, 200, 0.2), transparent);
    filter: blur(70px);
}

[data-theme="dark"] .carousel-slide:nth-child(1) .decoration-glow-5 {
    background: radial-gradient(circle, rgba(255, 152, 0, 0.48), rgba(255, 152, 0, 0.16), transparent);
    filter: blur(70px);
}

[data-theme="dark"] .carousel-slide:nth-child(2) .decoration-glow-1 {
    background: radial-gradient(circle, rgba(33, 150, 243, 0.6), rgba(33, 150, 243, 0.2), transparent);
    filter: blur(75px);
}

[data-theme="dark"] .carousel-slide:nth-child(2) .decoration-glow-2 {
    background: radial-gradient(circle, rgba(25, 118, 210, 0.55), rgba(25, 118, 210, 0.18), transparent);
    filter: blur(75px);
}

[data-theme="dark"] .carousel-slide:nth-child(2) .decoration-glow-3 {
    background: radial-gradient(circle, rgba(100, 181, 246, 0.45), transparent);
    filter: blur(75px);
}

[data-theme="dark"] .carousel-slide:nth-child(2) .decoration-glow-4 {
    background: radial-gradient(circle, rgba(0, 188, 212, 0.5), rgba(0, 188, 212, 0.18), transparent);
    filter: blur(75px);
}

[data-theme="dark"] .carousel-slide:nth-child(2) .decoration-glow-5 {
    background: radial-gradient(circle, rgba(156, 39, 176, 0.48), rgba(156, 39, 176, 0.16), transparent);
    filter: blur(75px);
}

[data-theme="dark"] .carousel-slide:nth-child(3) .decoration-glow-1 {
    background: radial-gradient(circle, rgba(76, 175, 80, 0.58), rgba(76, 175, 80, 0.2), transparent);
    filter: blur(70px);
}

[data-theme="dark"] .carousel-slide:nth-child(3) .decoration-glow-2 {
    background: radial-gradient(circle, rgba(56, 142, 60, 0.52), rgba(56, 142, 60, 0.16), transparent);
    filter: blur(70px);
}

[data-theme="dark"] .carousel-slide:nth-child(3) .decoration-glow-3 {
    background: radial-gradient(circle, rgba(129, 199, 132, 0.42), transparent);
    filter: blur(70px);
}

[data-theme="dark"] .carousel-slide:nth-child(3) .decoration-glow-4 {
    background: radial-gradient(circle, rgba(255, 235, 59, 0.5), rgba(255, 235, 59, 0.17), transparent);
    filter: blur(70px);
}

[data-theme="dark"] .carousel-slide:nth-child(3) .decoration-glow-5 {
    background: radial-gradient(circle, rgba(38, 198, 218, 0.47), rgba(38, 198, 218, 0.14), transparent);
    filter: blur(70px);
}

[data-theme="dark"] .decoration-circle {
    opacity: 0.6;
}

[data-theme="dark"] .carousel-slide:nth-child(1) .decoration-circle-1 {
    color: rgba(255, 107, 107, 0.5);
}

[data-theme="dark"] .carousel-slide:nth-child(1) .decoration-circle-2 {
    color: rgba(78, 205, 196, 0.5);
}

[data-theme="dark"] .carousel-slide:nth-child(2) .decoration-circle-1 {
    color: rgba(33, 150, 243, 0.55);
}

[data-theme="dark"] .carousel-slide:nth-child(2) .decoration-circle-2 {
    color: rgba(25, 118, 210, 0.55);
}

[data-theme="dark"] .carousel-slide:nth-child(3) .decoration-circle-1 {
    color: rgba(76, 175, 80, 0.55);
}

[data-theme="dark"] .carousel-slide:nth-child(3) .decoration-circle-2 {
    color: rgba(56, 142, 60, 0.55);
}

.slide-content {
    position: relative;
    height: 100%;
    display: flex;
    align-items: center;
    z-index: 10;
}

.slide-title {
    font-size: clamp(60px, 12vw, 180px);
    font-weight: 900;
    letter-spacing: -0.02em;
    color: #0a0a0a;
    margin-bottom: 30px;
    line-height: 0.9;
    position: relative;
    display: inline-block;
}

[data-theme="dark"] .slide-title {
    color: #ffffff;
}

.slide-subtitle {
    font-size: clamp(16px, 3vw, 24px);
    color: rgba(0, 0, 0, 0.65);
    margin-bottom: 50px;
    font-weight: 300;
    letter-spacing: 1px;
}

[data-theme="dark"] .slide-subtitle {
    color: rgba(255, 255, 255, 0.9);
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 60px;
    height: 60px;
    border: 2px solid rgba(255, 255, 255, 0.5);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(15px) saturate(180%);
    border-radius: 50%;
    cursor: pointer;
    z-index: 10;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    opacity: 0;
    pointer-events: none;
}

.carousel-btn.nearby {
    opacity: 1;
    pointer-events: auto;
}

.carousel-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(20px) saturate(180%);
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.3);
}

.carousel-btn-prev {
    left: 40px;
}

.carousel-btn-next {
    right: 40px;
}

.arrow {
    width: 12px;
    height: 12px;
    border-top: 2px solid #ffffff;
    border-right: 2px solid #ffffff;
}

.arrow-left {
    transform: rotate(-135deg);
}

.arrow-right {
    transform: rotate(45deg);
}

.carousel-indicators {
    position: absolute;
    bottom: 50px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 10;
    padding: 12px 24px;
    background: rgba(0, 0, 0, 0.15);
    backdrop-filter: blur(10px);
    border-radius: 50px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.carousel-indicators.nearby {
    opacity: 1;
    pointer-events: auto;
}

.indicator {
    width: 40px;
    height: 3px;
    background: rgba(0, 0, 0, 0.3);
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 3px;
}

.indicator.active {
    background: rgba(0, 0, 0, 0.8);
    width: 60px;
}

[data-theme="dark"] .carousel-indicators {
    background: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .indicator {
    background: rgba(255, 255, 255, 0.3);
}

[data-theme="dark"] .indicator.active {
    background: rgba(255, 255, 255, 0.9);
}

/* ==================== 按钮样式 ==================== */
.btn {
    padding: 18px 45px;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    border: none;
    background-color: transparent;
    color: #ffffff;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-primary {
    border: 2px solid #0a0a0a;
    color: #0a0a0a;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background-color: #0a0a0a;
    transition: left 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: -1;
}

.btn-primary:hover {
    color: #ffffff;
}

.btn-primary:hover::before {
    left: 0;
}

[data-theme="dark"] .btn-primary {
    border: 2px solid #ffffff;
    color: #ffffff;
    background: rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .btn-primary::before {
    background-color: #ffffff;
}

[data-theme="dark"] .btn-primary:hover {
    color: #000000;
}

/* 轮播图按钮容器 */
.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    margin-top: 40px;
}

/* ==================== 节区标题 ==================== */
.section-header {
    margin-bottom: 100px;
    position: relative;
}

.section-number {
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--accent-secondary);
    display: block;
    margin-bottom: 20px;
}

.section-title {
    font-size: clamp(48px, 8vw, 96px);
    font-weight: 900;
    letter-spacing: -0.02em;
    color: var(--accent-primary);
    margin-bottom: 20px;
    line-height: 1;
}

.section-description {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
}

/* ==================== 特性区域 - 网格轮播 ==================== */
.features {
    padding: 150px 0;
    background: linear-gradient(135deg, #ffffff 0%, #fff5f5 100%);
}

[data-theme="dark"] .features {
    background: linear-gradient(135deg, #1a1a1a 0%, #2a1a1a 100%);
}

.features-carousel-wrapper {
    margin-top: 60px;
}

.features-carousel-container {
    position: relative;
    overflow: visible; /* 改为visible以显示外部按钮 */
    padding: 0 60px; /* 为按钮留出空间 */
}

@media (max-width: 768px) {
    .features-carousel-container {
        padding: 0 20px;
    }
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    position: relative;
    min-height: 400px;
    /* 防止滚动时分割 */
    transform: translateZ(0);
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    will-change: auto;
}

.feature-card {
    display: none !important;
    flex-direction: column;
    gap: 20px;
    padding: 35px;
    background: rgba(255, 255, 255, 0.04);
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    opacity: 0;
    /* 性能优化 - 防止滚动时分割显示 */
    transform: translate3d(0, 20px, 0);
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    transform-style: preserve-3d;
    -webkit-transform-style: preserve-3d;
    contain: layout style;
    isolation: isolate;
}

.feature-card.visible {
    display: flex !important;
    opacity: 1 !important;
    transform: translate3d(0, 0, 0) !important;
}

[data-theme="dark"] .feature-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.feature-card:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    transform: translate3d(0, -5px, 0);
}

[data-theme="dark"] .feature-card:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-number {
    font-size: 48px;
    font-weight: 900;
    color: var(--text-tertiary);
    line-height: 1;
    transition: color 0.25s ease, transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    /* 性能优化 */
    backface-visibility: hidden;
    transform: translateZ(0);
}

.feature-card:hover .feature-number {
    color: var(--accent-secondary);
    transform: scale3d(1.1, 1.1, 1) translateZ(0);
}

.feature-content {
    flex: 1;
}

.feature-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}

.feature-hint {
    font-size: 13px;
    color: var(--accent-secondary);
    line-height: 1.7;
    font-weight: 500;
    opacity: 0.8;
    transition: opacity 0.3s;
}

.feature-card:hover .feature-hint {
    opacity: 1;
}

/* 导航按钮 */
.features-btn {
    position: absolute;
    top: 200px; /* 固定距离顶部的位置，对应网格中心 */
    width: 50px;
    height: 50px;
    border: 2px solid rgba(0, 0, 0, 0.15);
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border-radius: 50%;
    cursor: pointer;
    z-index: 10;
    opacity: 0.7;
    pointer-events: auto;
    transition: opacity 0.3s ease, transform 0.3s ease;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
}

[data-theme="dark"] .features-btn {
    border-color: rgba(255, 255, 255, 0.2);
    background: rgba(0, 0, 0, 0.4);
}

.features-btn.show {
    opacity: 1;
    pointer-events: auto;
}

.features-btn.show:hover {
    background: rgba(255, 255, 255, 0.95);
    border-color: rgba(0, 0, 0, 0.25);
    transform: scale(1.1);
}

[data-theme="dark"] .features-btn:hover {
    background: rgba(0, 0, 0, 0.6);
    border-color: rgba(255, 255, 255, 0.3);
}

.features-btn-prev {
    left: -25px;
}

.features-btn-next {
    right: -25px;
}

.features-btn .arrow {
    width: 10px;
    height: 10px;
    border-top: 2px solid var(--text-primary);
    border-right: 2px solid var(--text-primary);
}

/* 指示器 */
.features-indicators {
    position: absolute;
    bottom: -60px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
    opacity: 0.7;
    pointer-events: auto;
    transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.features-indicators.nearby,
.features-indicators:hover {
    opacity: 1;
    pointer-events: auto;
}

.features-indicator {
    width: 35px;
    height: 3px;
    background: rgba(0, 0, 0, 0.2);
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 3px;
}

[data-theme="dark"] .features-indicator {
    background: rgba(255, 255, 255, 0.2);
}

.features-indicator.active {
    background: var(--accent-secondary);
    width: 50px;
}

.features-indicator:hover {
    background: rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .features-indicator:hover {
    background: rgba(255, 255, 255, 0.4);
}

/* 页数显示 */
.features-page-info {
    position: absolute;
    bottom: -100px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
    z-index: 10;
}

.features-page-info .page-current {
    color: var(--accent-secondary);
    font-size: 18px;
    font-weight: 700;
}

.features-page-info .page-separator {
    color: var(--text-tertiary);
    font-size: 14px;
}

.features-page-info .page-total {
    color: var(--text-secondary);
    font-size: 16px;
}

/* ==================== 下载区域 - 全屏布局 ==================== */
.download-fullscreen {
    height: 100vh;
    width: 100%;
    position: relative;
    overflow: hidden;
}

.download-fullscreen-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.download-fullscreen-bg .showcase-gradient-overlay {
    z-index: 100;
    pointer-events: none;
}

.download-fullscreen-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg,
        #ffffff 0%,
        #f0f7ff 25%,
        #e0efff 50%,
        #c9e2ff 75%,
        #b8d9ff 100%);
    z-index: 0;
}

[data-theme="dark"] .download-fullscreen-bg::before {
    background: linear-gradient(135deg,
        #1a1a2e 0%,
        #1f2a40 25%,
        #243b55 50%,
        #2a4a6a 75%,
        #305a80 100%);
}

.download-fullscreen-container {
    position: relative;
    z-index: 50;
    height: calc(100vh - 84px);
    margin-top: 84px;
    display: flex;
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
    padding: 60px 0;
    gap: 60px;
    align-items: stretch;
}

/* 左侧信息栏 */
.download-sidebar {
    flex: 0 0 48%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.download-sidebar-badge {
    display: inline-block;
    padding: 8px 20px;
    background: linear-gradient(135deg, var(--accent-secondary), #60a5fa);
    color: #ffffff;
    border-radius: 25px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    margin-bottom: 30px;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}

.download-sidebar-main-title {
    font-size: 72px;
    font-weight: 900;
    color: rgba(255, 255, 255, 0.95);
    line-height: 1.1;
    margin: 0 0 15px 0;
    letter-spacing: -0.02em;
}

.download-sidebar-subtitle {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 30px;
    line-height: 1.6;
}

.download-version-info {
    margin-bottom: 30px;
}

.download-version-number {
    font-size: 48px;
    font-weight: 900;
    color: var(--accent-secondary);
    line-height: 1;
    margin-bottom: 10px;
    letter-spacing: -0.02em;
}

.download-version-name {
    font-size: 16px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 8px;
}

.download-version-description {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 0;
    line-height: 1.6;
}

/* 元信息网格 */
.download-meta-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin-bottom: 30px;
}

.download-meta-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 16px;
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(20px);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.8);
    transition: all 0.3s ease;
    text-align: center;
}

[data-theme="dark"] .download-meta-item {
    background: rgba(26, 26, 26, 0.6);
    border-color: rgba(255, 255, 255, 0.15);
}

.download-meta-item:hover {
    transform: translateY(-3px);
    background: rgba(255, 255, 255, 0.8);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .download-meta-item:hover {
    background: rgba(26, 26, 26, 0.8);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.meta-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    color: var(--accent-secondary);
}

.meta-content {
    display: flex;
    flex-direction: column;
    gap: 4px;
    width: 100%;
}

.download-meta-item .meta-label {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: rgba(255, 255, 255, 0.6);
}

.download-meta-item .meta-value {
    font-size: 15px;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.95);
}

/* 下载按钮 */
.download-sidebar-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.download-action-btn {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.download-action-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 1s cubic-bezier(0.25, 0.46, 0.45, 0.94), 
                height 1s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.download-action-btn:not(.download-action-disabled):hover::before {
    width: max(600px, 150%);
    height: max(600px, 150%);
}

.download-btn-content {
    display: flex;
    align-items: center;
    gap: 12px;
    position: relative;
    z-index: 1;
}

.download-btn-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.download-btn-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
}

.download-btn-title {
    font-size: 16px;
    font-weight: 600;
    line-height: 1;
}

.download-btn-subtitle {
    font-size: 12px;
    font-weight: 400;
    opacity: 0.8;
    line-height: 1;
}

.download-action-btn svg {
    flex-shrink: 0;
    position: relative;
    z-index: 1;
    transition: transform 0.3s ease;
}

.download-action-primary {
    background: linear-gradient(135deg, var(--accent-secondary), #60a5fa);
    color: #ffffff;
    box-shadow: 0 6px 24px rgba(59, 130, 246, 0.4);
}

.download-action-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 40px rgba(59, 130, 246, 0.6);
}

.download-action-primary:hover svg {
    transform: translateX(5px);
}

.download-action-secondary {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(20px);
    color: rgba(255, 255, 255, 0.9);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.download-action-secondary:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.4);
    transform: translateY(-2px);
}

.download-action-secondary:hover svg {
    transform: translateX(5px);
}

.download-action-disabled {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(20px);
    color: rgba(255, 255, 255, 0.4);
    border: 2px solid rgba(255, 255, 255, 0.15);
    cursor: not-allowed;
    opacity: 0.6;
}

.download-action-disabled:hover {
    transform: none;
    box-shadow: none;
}

.download-action-disabled::before {
    display: none;
}

/* 右侧发布说明区域 */
.download-content {
    flex: 0 0 48%;
    display: flex;
    align-items: stretch;
    overflow: hidden;
}

.download-notes-card {
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.9);
    border-radius: 20px;
    padding: 32px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

[data-theme="dark"] .download-notes-card {
    background: rgba(26, 26, 26, 0.8);
    border-color: rgba(255, 255, 255, 0.2);
}

.download-notes-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--border-color);
    flex-shrink: 0;
}

.download-notes-header h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.download-notes-badge {
    padding: 6px 14px;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(96, 165, 250, 0.2));
    color: var(--accent-secondary);
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.download-notes-content {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-primary);
    flex: 1;
    overflow-y: auto;
}

/* 更新日志格式化样式 */
.release-notes-section {
    margin-bottom: 24px;
}

.release-notes-section:last-child {
    margin-bottom: 0;
}

.release-notes-section-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--accent-secondary);
    margin: 0 0 12px 0;
    display: flex;
    align-items: center;
    gap: 8px;
    padding-bottom: 8px;
    border-bottom: 2px solid rgba(59, 130, 246, 0.2);
}

.release-notes-section-title::before {
    content: '';
    width: 4px;
    height: 18px;
    background: linear-gradient(135deg, var(--accent-secondary), #60a5fa);
    border-radius: 2px;
}

.release-notes-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.release-notes-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 8px 0;
    position: relative;
    padding-left: 24px;
}

.release-notes-item::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--accent-secondary);
    font-size: 20px;
    line-height: 1;
    font-weight: 700;
}

.release-notes-item-text {
    flex: 1;
    color: var(--text-primary);
    line-height: 1.6;
}

[data-theme="dark"] .release-notes-section-title {
    border-bottom-color: rgba(59, 130, 246, 0.3);
}

/* 自定义滚动条 */
/* 更新日志滚动条优化 */
.download-notes-card {
    scrollbar-width: thin;
    scrollbar-color: var(--accent-secondary) transparent;
}

.download-notes-card::-webkit-scrollbar {
    width: 6px;
}

.download-notes-card::-webkit-scrollbar-track {
    background: transparent;
    margin: 8px 0;
}

.download-notes-card::-webkit-scrollbar-thumb {
    background: rgba(59, 130, 246, 0.4);
    border-radius: 3px;
    transition: background 0.3s ease;
}

.download-notes-card::-webkit-scrollbar-thumb:hover {
    background: var(--accent-secondary);
}

[data-theme="dark"] .download-notes-card::-webkit-scrollbar-thumb {
    background: rgba(59, 130, 246, 0.5);
}

[data-theme="dark"] .download-notes-card::-webkit-scrollbar-thumb:hover {
    background: rgba(96, 165, 250, 0.8);
}

/* 无版本提示 */
.download-no-version {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--text-secondary);
}

.download-no-version svg {
    margin-bottom: 30px;
    color: var(--text-tertiary);
}

.download-no-version h2 {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 15px;
}

.download-no-version p {
    font-size: 16px;
    color: var(--text-secondary);
}

/* 响应式设计 */
@media (max-width: 1400px) {
    .download-fullscreen-container {
        padding: 0 60px;
        gap: 60px;
    }

    .download-sidebar {
        flex: 0 0 420px;
    }

    .download-sidebar-title {
        font-size: 80px;
    }
}

@media (max-width: 1024px) {
    .download-fullscreen-container {
        flex-direction: column;
        padding: 40px;
        overflow-y: auto;
        height: auto;
        min-height: calc(100vh - 84px);
    }

    .download-sidebar {
        flex: 0 0 auto;
        padding-right: 0;
        padding-bottom: 40px;
    }

    .download-sidebar-title {
        font-size: 72px;
    }

    .download-content {
        flex: 1;
    }

    .download-notes-card {
        max-height: none;
    }
}

@media (max-width: 768px) {
    .download-fullscreen-container {
        padding: 8px 16px 20px;
        min-height: auto;
        margin-top: 0;
    }
    
    .download-sidebar {
        margin-bottom: 20px;
        padding-top: 4px !important;
    }
    
    .download-sidebar-badge {
        font-size: 9px;
        padding: 3px 10px;
        margin-bottom: 3px;
    }

    .download-sidebar-main-title {
        font-size: 22px;
        margin-bottom: 3px;
        line-height: 1.2;
    }

    .download-sidebar-subtitle {
        font-size: 11px;
        margin-bottom: 10px;
    }
    
    .download-version-info {
        margin-bottom: 10px;
    }
    
    .download-version-number {
        font-size: 26px;
        margin-bottom: 3px;
    }
    
    .download-version-name {
        font-size: 11px;
        margin-bottom: 2px;
    }
    
    .download-version-description {
        font-size: 10px;
        line-height: 1.4;
    }
    
    .download-meta-grid {
        grid-template-columns: 1fr;
        gap: 6px;
        margin-bottom: 10px;
    }

    .download-meta-item {
        padding: 8px;
    }

    .meta-icon {
        width: 16px;
        height: 16px;
    }
    
    .meta-label {
        font-size: 9px;
    }
    
    .meta-value {
        font-size: 11px;
    }
    
    .download-sidebar-actions {
        margin-top: 16px;
        gap: 10px;
    }

    .download-action-btn {
        padding: 14px 18px;
        font-size: 14px;
    }

    .download-btn-content {
        gap: 12px;
    }

    .download-btn-icon {
        width: 22px;
        height: 22px;
    }

    .download-btn-title {
        font-size: 15px;
    }

    .download-btn-subtitle {
        font-size: 12px;
    }

    .download-content {
        margin-top: 0;
    }
    
    .download-notes-card {
        padding: 20px 16px;
        max-height: none;
        overflow-y: visible;
    }

    .download-notes-header {
        margin-bottom: 16px;
        padding-bottom: 12px;
    }
    
    .download-notes-header h3 {
        font-size: 20px;
    }
    
    .download-notes-badge {
        font-size: 11px;
        padding: 4px 10px;
    }
    
    .download-notes-content {
        font-size: 14px;
        line-height: 1.7;
    }
}

/* 下载页面亮色模式文字适配 */
:root .download-sidebar-main-title {
    color: #1e3a5f;
}

:root .download-sidebar-subtitle {
    color: #475569;
}

:root .download-version-name {
    color: #334155;
}

:root .download-version-date {
    color: #64748b;
}

:root .download-version-description {
    color: #64748b;
}

:root .download-meta-item .meta-label {
    color: #64748b;
}

:root .download-meta-item .meta-value {
    color: #1e3a5f;
}

:root .download-main-content {
    background: rgba(255, 255, 255, 0.9);
}

:root .download-main-title {
    color: #1e3a5f;
}

:root .download-main-subtitle {
    color: #475569;
}

:root .download-action-secondary {
    background: rgba(30, 58, 95, 0.1);
    border-color: rgba(30, 58, 95, 0.3);
    color: #1e3a5f;
}

:root .download-action-secondary:hover {
    background: rgba(30, 58, 95, 0.2);
}

:root .download-action-disabled {
    background: rgba(100, 116, 139, 0.1);
    color: #94a3b8;
}

:root .release-notes-title {
    color: #1e3a5f;
}

:root .release-notes-section-title {
    color: #334155;
}

:root .release-notes-item {
    color: #475569;
}

:root .download-notes-badge {
    color: #1e3a5f;
    background: rgba(59, 130, 246, 0.1);
}

:root .download-notes-content {
    color: #475569;
}

/* 下载页面暗色模式 */
[data-theme="dark"] .download-sidebar-main-title {
    color: rgba(255, 255, 255, 0.95);
}

[data-theme="dark"] .download-sidebar-subtitle {
    color: rgba(255, 255, 255, 0.75);
}

[data-theme="dark"] .download-version-name {
    color: rgba(255, 255, 255, 0.9);
}

[data-theme="dark"] .download-version-description {
    color: rgba(255, 255, 255, 0.7);
}

[data-theme="dark"] .download-meta-item .meta-label {
    color: rgba(255, 255, 255, 0.6);
}

[data-theme="dark"] .download-meta-item .meta-value {
    color: rgba(255, 255, 255, 0.95);
}

[data-theme="dark"] .download-main-content {
    background: rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .download-main-title {
    color: #ffffff;
}

[data-theme="dark"] .download-main-subtitle {
    color: rgba(255, 255, 255, 0.7);
}

[data-theme="dark"] .download-action-secondary {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.3);
    color: #ffffff;
}

[data-theme="dark"] .download-action-disabled {
    background: rgba(255, 255, 255, 0.05);
    color: rgba(255, 255, 255, 0.4);
}

[data-theme="dark"] .release-notes-title {
    color: #ffffff;
}

[data-theme="dark"] .release-notes-section-title {
    color: rgba(255, 255, 255, 0.9);
}

[data-theme="dark"] .release-notes-item {
    color: rgba(255, 255, 255, 0.8);
}

[data-theme="dark"] .download-notes-badge {
    color: rgba(255, 255, 255, 0.9);
    background: rgba(59, 130, 246, 0.2);
}

[data-theme="dark"] .download-notes-content {
    color: rgba(255, 255, 255, 0.8);
}

/* ==================== 订阅页面 ==================== */
.subscription-fullscreen {
    height: 100vh;
    width: 100%;
    position: relative;
    overflow: hidden;
}

.subscription-fullscreen-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.subscription-fullscreen-bg .showcase-gradient-overlay {
    z-index: 100;
    pointer-events: none;
}

.subscription-fullscreen-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg,
        #ffffff 0%,
        #f0f7ff 25%,
        #e0efff 50%,
        #c9e2ff 75%,
        #b8d9ff 100%);
    z-index: 0;
}

[data-theme="dark"] .subscription-fullscreen-bg::before {
    background: linear-gradient(135deg,
        #1a1a2e 0%,
        #1f2a40 25%,
        #243b55 50%,
        #2a4a6a 75%,
        #305a80 100%);
}

.subscription-fullscreen-container {
    position: relative;
    z-index: 50;
    height: calc(100vh - 84px);
    margin-top: 84px;
    display: flex;
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
    padding: 60px 40px;
    gap: 60px;
    align-items: stretch;
    /* 给阴影留出空间 */
    overflow: visible;
}

/* 左侧信息栏 */
.subscription-sidebar {
    flex: 0 0 48%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.subscription-sidebar-badge {
    display: inline-block;
    padding: 8px 20px;
    background: linear-gradient(135deg, var(--accent-secondary), #60a5fa);
    color: #ffffff;
    border-radius: 25px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    margin-bottom: 30px;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}

.subscription-sidebar-title {
    font-size: 72px;
    font-weight: 900;
    color: rgba(255, 255, 255, 0.95);
    line-height: 1.1;
    margin: 0 0 15px 0;
    letter-spacing: -0.02em;
}

.subscription-sidebar-subtitle {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 30px;
    line-height: 1.6;
}

.subscription-sidebar-description {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.subscription-sidebar-description > p {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
    margin: 0;
}

.subscription-sidebar-highlights {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.subscription-sidebar-actions {
    display: flex;
    flex-direction: column;
    gap: 15px;
    flex-shrink: 0;
}

.subscription-action-btn {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 30px;
    border-radius: 12px;
    font-size: 18px;
    font-weight: 600;
    text-decoration: none;
    background: linear-gradient(135deg, var(--accent-secondary), #60a5fa);
    color: #ffffff;
    box-shadow: 0 6px 24px rgba(59, 130, 246, 0.4);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.subscription-action-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 1s cubic-bezier(0.25, 0.46, 0.45, 0.94), 
                height 1s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.subscription-action-btn:hover::before {
    width: max(600px, 150%);
    height: max(600px, 150%);
}

.subscription-action-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 40px rgba(59, 130, 246, 0.6);
}

.subscription-action-btn svg {
    transition: transform 0.3s ease;
}

.subscription-action-btn:hover svg {
    transform: translateX(5px);
}

/* 右侧套餐区域 */
.subscription-content {
    flex: 0 0 48%;
    display: flex;
    flex-direction: column;
    overflow: visible;
}

.subscription-content-header {
    margin-bottom: 20px;
}

.subscription-content-note {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.65);
    margin: 0;
    text-align: center;
}

.subscription-cards-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 16px;
    overflow-y: auto;
    overflow-x: visible !important;
    /* 增加 padding 给阴影留出空间 */
    padding: 20px 20px 8px 0;
    min-height: 0;
    /* 确保子元素的阴影不会被截断 */
    contain: layout style;
}

/* 确保订阅卡片区域没有任何意外的 outline 或滑块 */
.subscription-cards-wrapper *,
.subscription-cards-wrapper *::before,
.subscription-cards-wrapper *::after {
    outline: none !important;
}

.subscription-cards-wrapper *:focus,
.subscription-cards-wrapper *:focus-visible,
.subscription-cards-wrapper *:focus-within,
.subscription-cards-wrapper *:active {
    outline: none !important;
    box-shadow: none !important;
    border: none !important;
}

/* 隐藏任何可能的进度条或滑块 */
.subscription-cards-wrapper input[type="range"],
.subscription-cards-wrapper progress,
.subscription-cards-wrapper meter {
    display: none !important;
}

/* 移除所有浏览器默认的 focus ring */
.subscription-cards-wrapper button::-moz-focus-inner,
.subscription-cards-wrapper input::-moz-focus-inner,
.subscription-cards-wrapper select::-moz-focus-inner {
    border: 0 !important;
    outline: none !important;
    padding: 0 !important;
}

.subscription-cards-wrapper button::-webkit-focus-ring-color,
.subscription-cards-wrapper input::-webkit-focus-ring-color,
.subscription-cards-wrapper select::-webkit-focus-ring-color {
    outline: none !important;
}

.subscription-cards-wrapper::-webkit-scrollbar {
    width: 6px;
}

.subscription-cards-wrapper::-webkit-scrollbar-track {
    background: transparent;
    margin: 8px 0;
}

.subscription-cards-wrapper::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.3);
    border-radius: 3px;
    transition: background 0.3s ease;
}

.subscription-cards-wrapper::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.5);
}

/* 加载中 */
.subscription-loading {
    text-align: center;
    padding: 80px 20px;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.2);
    border-top-color: var(--accent-secondary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.subscription-loading p {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.7);
}

/* 套餐卡片 */
.subscription-card {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(20px);
    border: 2px solid rgba(255, 255, 255, 0.25);
    border-radius: 20px;
    /* 稍微缩小 padding 给阴影留出空间 */
    padding: 20px;
    display: flex;
    flex-direction: column;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: visible !important;
    flex-shrink: 0;
    /* 使用 filter: drop-shadow 让阴影跟随圆角，避免阴影被截断 */
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.1));
    outline: none !important;
    /* 确保阴影不会被父元素截断 */
    isolation: isolate;
    /* 给阴影留出空间，避免被截断 */
    margin: 8px 8px 8px 0;
}

.subscription-card:focus,
.subscription-card:focus-visible {
    outline: none !important;
    box-shadow: none !important;
}

[data-theme="dark"] .subscription-card {
    background: rgba(26, 26, 26, 0.5);
    border-color: rgba(255, 255, 255, 0.15);
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.4));
}

.subscription-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, 
        rgba(59, 130, 246, 0) 0%, 
        rgba(59, 130, 246, 0.12) 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
    border-radius: 20px;
    pointer-events: none;
    z-index: 0;
}

.subscription-card:hover::before {
    opacity: 1;
}

.subscription-card:hover {
    transform: translateY(-4px);
    border-color: rgba(255, 255, 255, 0.4);
    /* 统一使用 filter: drop-shadow，避免阴影被分割 - 合并默认和hover的阴影 */
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.1)) 
            drop-shadow(0 8px 24px rgba(59, 130, 246, 0.35));
    /* 确保悬浮时阴影完整显示 */
    margin: 8px 8px 8px 0;
}

[data-theme="dark"] .subscription-card:hover {
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.4)) 
            drop-shadow(0 8px 24px rgba(59, 130, 246, 0.5));
}

/* 推荐标签 */
.subscription-card.recommended {
    border-color: var(--accent-secondary);
    background: rgba(59, 130, 246, 0.12);
    filter: drop-shadow(0 6px 20px rgba(59, 130, 246, 0.4));
}

[data-theme="dark"] .subscription-card.recommended {
    background: rgba(59, 130, 246, 0.18);
    filter: drop-shadow(0 6px 20px rgba(59, 130, 246, 0.6));
}

.subscription-card.recommended::after {
    content: '推荐';
    position: absolute;
    top: 12px;
    right: -30px;
    background: linear-gradient(135deg, var(--accent-secondary), #60a5fa);
    color: #ffffff;
    padding: 4px 45px;
    font-size: 11px;
    font-weight: 600;
    transform: rotate(45deg);
    filter: drop-shadow(0 2px 8px rgba(59, 130, 246, 0.4));
    z-index: 10;
    outline: none !important;
    border: none !important;
}

.subscription-card-content {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    gap: 0;
    min-height: 0;
    overflow: visible !important;
}

/* 确保所有子元素都没有意外的 outline 和边框 */
.subscription-card *,
.subscription-card *::before,
.subscription-card *::after {
    outline: none !important;
}

.subscription-card *:focus,
.subscription-card *:focus-visible,
.subscription-card *:focus-within,
.subscription-card *:active {
    outline: none !important;
    box-shadow: none !important;
    border: none !important;
}

/* 移除所有可能的浏览器默认样式 */
.subscription-card button::-moz-focus-inner,
.subscription-card input::-moz-focus-inner {
    border: 0 !important;
    outline: none !important;
    padding: 0 !important;
}

.subscription-card button::-webkit-focus-ring-color,
.subscription-card input::-webkit-focus-ring-color {
    outline: none !important;
}

.subscription-card-header {
    text-align: center;
    margin-bottom: 16px;
    padding-bottom: 14px;
    border-bottom: 2px solid rgba(255, 255, 255, 0.2);
    flex-shrink: 0;
}

[data-theme="dark"] .subscription-card-header {
    border-bottom-color: rgba(255, 255, 255, 0.15);
}

.subscription-plan-name {
    font-size: 18px;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.95);
    margin: 0 0 6px 0;
    letter-spacing: 0.5px;
}

.subscription-plan-description {
    font-size: 10px;
    color: rgba(255, 255, 255, 0.65);
    margin: 0;
}

.subscription-price {
    text-align: center;
    margin-bottom: 18px;
    padding: 16px 12px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    flex-shrink: 0;
}

[data-theme="dark"] .subscription-price {
    background: rgba(255, 255, 255, 0.05);
}

.subscription-price-amount {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 3px;
}

.subscription-currency {
    font-size: 13px;
    font-weight: 600;
    color: var(--accent-secondary);
}

.subscription-price-number {
    font-size: 28px;
    font-weight: 900;
    color: var(--accent-secondary);
    line-height: 1;
}

.subscription-price-period {
    font-size: 10px;
    color: rgba(255, 255, 255, 0.55);
    margin-top: 3px;
}

.subscription-features {
    flex: 1;
    margin-bottom: 18px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    min-height: 0;
    max-height: none;
    overflow: visible;
    /* 彻底移除滚动条 */
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.subscription-features::-webkit-scrollbar {
    display: none !important;
    width: 0 !important;
    height: 0 !important;
}


.subscription-feature-item {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 4px 0;
    transition: transform 0.2s ease;
}

.subscription-feature-item:hover {
    transform: translateX(3px);
}

.subscription-feature-icon {
    flex-shrink: 0;
    width: 14px;
    height: 14px;
    color: var(--accent-secondary);
    margin-top: 3px;
    filter: drop-shadow(0 1px 2px rgba(59, 130, 246, 0.3));
}

.subscription-feature-text {
    font-size: 11px;
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.5;
    word-break: break-word;
    flex: 1;
}

.subscription-button {
    width: 100%;
    padding: 14px 18px;
    border-radius: 12px;
    font-size: 13px;
    font-weight: 600;
    border: none !important;
    cursor: not-allowed;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    pointer-events: none;
    flex-shrink: 0;
    letter-spacing: 0.3px;
    margin-top: auto;
    outline: none !important;
    box-shadow: none !important;
    -webkit-appearance: none !important;
    -moz-appearance: none !important;
    appearance: none !important;
}

.subscription-button:focus,
.subscription-button:focus-visible,
.subscription-button:focus-within,
.subscription-button:active,
.subscription-button:hover {
    outline: none !important;
    box-shadow: none !important;
    border: none !important;
    -webkit-appearance: none !important;
    -moz-appearance: none !important;
    appearance: none !important;
}

/* 彻底移除按钮的所有可能的边框和outline */
.subscription-button::-moz-focus-inner {
    border: 0 !important;
    outline: none !important;
    padding: 0 !important;
}

.subscription-button::-webkit-focus-ring-color {
    outline: none !important;
}

.subscription-button-primary {
    background: linear-gradient(135deg, var(--accent-secondary), #60a5fa);
    color: #ffffff;
    filter: drop-shadow(0 4px 12px rgba(59, 130, 246, 0.4));
    outline: none !important;
}

.subscription-button-secondary {
    background: rgba(255, 255, 255, 0.15);
    color: rgba(255, 255, 255, 0.9);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

/* 响应式 */
@media (max-width: 1024px) {
    .subscription-fullscreen-container {
        flex-direction: column;
        padding: 40px;
        overflow-y: auto;
        height: auto;
        min-height: calc(100vh - 84px);
    }

    .subscription-sidebar {
        flex: 0 0 auto;
        padding-bottom: 40px;
    }

    .subscription-sidebar-title {
        font-size: 60px;
    }

    .subscription-content {
        flex: 1;
    }
}

@media (max-width: 768px) {
    .subscription-fullscreen-container {
        padding: 8px 16px 20px;
        min-height: auto;
        margin-top: 0;
    }
    
    .subscription-sidebar {
        margin-bottom: 8px;
        padding-top: 4px !important;
    }
    
    .subscription-sidebar-badge {
        font-size: 9px;
        padding: 3px 10px;
        margin-bottom: 2px;
    }

    .subscription-sidebar-title {
        font-size: 22px;
        margin-bottom: 2px;
        line-height: 1.2;
    }

    .subscription-sidebar-subtitle {
        font-size: 11px;
        margin-bottom: 6px;
    }
    
    .subscription-sidebar-description {
        margin-bottom: 6px;
    }
    
    .subscription-sidebar-description > p {
        font-size: 11px;
        line-height: 1.3;
        margin-bottom: 4px;
    }
    
    .subscription-sidebar-highlights {
        gap: 4px;
        margin-bottom: 6px;
    }
    
    .highlight-item {
        padding: 4px 6px;
        font-size: 10px;
    }
    
    .subscription-sidebar-actions {
        margin-top: 12px;
        margin-bottom: 8px;
    }

    .subscription-action-btn {
        padding: 16px 24px;
        font-size: 15px;
    }

    .subscription-content-header {
        margin-bottom: 12px;
    }

    .subscription-content-note {
        font-size: 12px;
    }

    .subscription-cards-wrapper {
        overflow-y: visible;
        padding: 0;
        gap: 14px;
    }

    .subscription-card {
        padding: 18px 14px;
        margin-bottom: 0;
    }
    
    .subscription-card-header {
        margin-bottom: 10px;
        padding-bottom: 8px;
    }

    .subscription-plan-name {
        font-size: 15px;
        margin-bottom: 4px;
    }

    .subscription-plan-period {
        font-size: 11px;
    }

    .subscription-price {
        margin-bottom: 10px;
        padding: 8px 6px;
    }

    .subscription-price-number {
        font-size: 28px;
    }

    .subscription-price-unit {
        font-size: 12px;
    }

    .subscription-features {
        margin-bottom: 10px;
        gap: 5px;
    }

    .subscription-feature-item {
        font-size: 11px;
        padding: 3px 0;
        line-height: 1.4;
    }

    .subscription-feature-icon {
        width: 12px;
        height: 12px;
    }
    
    .subscription-card-footer {
        margin-top: 6px;
    }
    
    .subscription-btn {
        padding: 7px 12px;
        font-size: 10px;
    }
}

/* 订阅页面亮色模式文字适配 */
:root .subscription-sidebar-title {
    color: #1e3a5f;
}

:root .subscription-sidebar-subtitle {
    color: #475569;
}

:root .subscription-sidebar-description > p {
    color: #64748b;
}

:root .subscription-content-note {
    color: #64748b;
}

:root .subscription-card {
    background: rgba(255, 255, 255, 0.9);
    border-color: rgba(59, 130, 246, 0.2);
}

:root .subscription-card-header {
    border-bottom-color: rgba(59, 130, 246, 0.2);
}

:root .subscription-plan-name {
    color: #1e3a5f;
}

:root .subscription-plan-description {
    color: #64748b;
}

:root .subscription-price {
    background: rgba(59, 130, 246, 0.08);
}

:root .subscription-price-number {
    color: #1e3a5f;
}

:root .subscription-price-unit {
    color: #64748b;
}

:root .subscription-feature-item {
    color: #475569;
}

:root .subscription-feature-text {
    color: #475569;
}

:root .subscription-button-secondary {
    background: rgba(30, 58, 95, 0.1);
    color: #1e3a5f;
}

:root .subscription-highlight-item {
    background: rgba(255, 255, 255, 0.8);
    border-color: rgba(59, 130, 246, 0.2);
}

:root .subscription-highlight-text {
    color: #334155;
}

:root .subscription-currency {
    color: #3b82f6;
}

:root .subscription-card.recommended {
    border-color: rgba(59, 130, 246, 0.4);
}

/* 订阅页面暗色模式 */
[data-theme="dark"] .subscription-sidebar-title {
    color: rgba(255, 255, 255, 0.95);
}

[data-theme="dark"] .subscription-sidebar-subtitle {
    color: rgba(255, 255, 255, 0.75);
}

[data-theme="dark"] .subscription-sidebar-description > p {
    color: rgba(255, 255, 255, 0.7);
}

[data-theme="dark"] .subscription-content-note {
    color: rgba(255, 255, 255, 0.65);
}

[data-theme="dark"] .subscription-plan-name {
    color: rgba(255, 255, 255, 0.95);
}

[data-theme="dark"] .subscription-plan-description {
    color: rgba(255, 255, 255, 0.65);
}

[data-theme="dark"] .subscription-price-number {
    color: #ffffff;
}

[data-theme="dark"] .subscription-price-unit {
    color: rgba(255, 255, 255, 0.6);
}

[data-theme="dark"] .subscription-feature-item {
    color: rgba(255, 255, 255, 0.85);
}

[data-theme="dark"] .subscription-feature-text {
    color: rgba(255, 255, 255, 0.85);
}

[data-theme="dark"] .subscription-button-secondary {
    background: rgba(255, 255, 255, 0.15);
    color: rgba(255, 255, 255, 0.9);
}

[data-theme="dark"] .subscription-highlight-item {
    background: rgba(26, 26, 26, 0.6);
    border-color: rgba(255, 255, 255, 0.15);
}

[data-theme="dark"] .subscription-highlight-text {
    color: rgba(255, 255, 255, 0.9);
}

[data-theme="dark"] .subscription-currency {
    color: var(--accent-secondary);
}

[data-theme="dark"] .subscription-card {
    background: rgba(26, 26, 26, 0.5);
    border-color: rgba(255, 255, 255, 0.15);
}

[data-theme="dark"] .subscription-card-header {
    border-bottom-color: rgba(255, 255, 255, 0.15);
}

[data-theme="dark"] .subscription-price {
    background: rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] .subscription-card.recommended {
    border-color: rgba(59, 130, 246, 0.5);
    background: rgba(59, 130, 246, 0.18);
}

/* ==================== 旧版下载区域样式（保留以防需要） ==================== */
.download {
    padding: 150px 0;
    background: linear-gradient(135deg, #ffffff 0%, #fff5f5 100%);
}

[data-theme="dark"] .download {
    background: linear-gradient(135deg, #1a1a1a 0%, #2a1a1a 100%);
}

.download-card {
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(20px) saturate(180%);
    padding: 80px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 24px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .download-card {
    background: rgba(26, 26, 26, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.download-card:hover {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(25px) saturate(200%);
    border-color: rgba(255, 255, 255, 0.3);
    box-shadow: 0 20px 80px rgba(0, 0, 0, 0.1);
    transform: translateY(-5px);
}

[data-theme="dark"] .download-card:hover {
    background: rgba(26, 26, 26, 0.7);
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: 0 20px 80px rgba(0, 0, 0, 0.3);
}

.download-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    margin-bottom: 60px;
}

.version-badge {
    display: inline-block;
    padding: 8px 20px;
    background: linear-gradient(135deg, var(--accent-secondary), #60a5fa);
    color: #ffffff;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 30px;
    border-radius: 20px;
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.4);
    transition: all 0.3s ease;
}

.version-badge:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 28px rgba(59, 130, 246, 0.6);
}

.version-number {
    font-size: 72px;
    font-weight: 900;
    color: var(--accent-primary);
    margin-bottom: 15px;
    line-height: 1;
    letter-spacing: -0.02em;
}

.version-name {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.version-description {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.8;
}

.version-meta-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.meta-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.meta-label {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--text-tertiary);
}

.meta-value {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.download-action-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
}

.download-action {
    text-align: center;
}

.btn-download {
    position: relative;
    padding: 30px 60px;
    background: linear-gradient(135deg, var(--accent-secondary), #60a5fa);
    color: #ffffff;
    border: none;
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    cursor: pointer;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 6px 24px rgba(59, 130, 246, 0.4);
}

[data-theme="dark"] .btn-download {
    background: linear-gradient(135deg, var(--accent-secondary), #60a5fa);
    color: #ffffff;
}

.btn-download::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.btn-download:hover::before {
    width: 400px;
    height: 400px;
}

.btn-download:hover {
    transform: translateY(-6px) scale(1.03);
    box-shadow: 0 12px 48px rgba(59, 130, 246, 0.6);
}

.btn-download:active {
    transform: translateY(-2px) scale(0.98);
}

.btn-text,
.btn-icon {
    position: relative;
    z-index: 1;
}

.download-hint {
    margin-top: 20px;
    font-size: 14px;
    color: var(--text-tertiary);
    letter-spacing: 1px;
}

.release-notes {
    background: rgba(250, 250, 250, 0.5);
    backdrop-filter: blur(10px) saturate(150%);
    padding: 40px;
    border-left: 4px solid var(--accent-secondary);
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
}

[data-theme="dark"] .release-notes {
    background: rgba(26, 26, 26, 0.5);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.release-notes h4 {
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.release-content {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 2;
    white-space: pre-wrap;
}

/* ==================== 安装指南 ==================== */
.installation-guide {
    margin-top: 40px;
    background: rgba(250, 250, 250, 0.5);
    backdrop-filter: blur(10px) saturate(150%);
    padding: 40px;
    border-left: 4px solid var(--accent-primary);
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
}

[data-theme="dark"] .installation-guide {
    background: rgba(26, 26, 26, 0.5);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.installation-guide h4 {
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--text-primary);
    margin-bottom: 15px;
}

.installation-intro {
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 30px;
    line-height: 1.6;
}

.installation-steps {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.installation-step {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.step-number {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    background: var(--accent-primary);
    color: #ffffff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 700;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .step-number {
    background: var(--accent-secondary);
}

.step-content {
    flex: 1;
}

.step-content h5 {
    font-size: 17px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.step-content p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 15px;
}

.step-content strong {
    color: var(--text-primary);
    font-weight: 600;
}

.command-block {
    position: relative;
    background: rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 8px;
    padding: 16px 50px 16px 16px;
    margin: 15px 0;
    font-family: 'SF Mono', 'Monaco', 'Consolas', monospace;
}

[data-theme="dark"] .command-block {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.1);
}

.command-block code {
    display: block;
    font-size: 13px;
    color: var(--text-primary);
    word-break: break-all;
    white-space: pre-wrap;
}

.copy-button {
    position: absolute;
    top: 50%;
    right: 12px;
    transform: translateY(-50%);
    width: 32px;
    height: 32px;
    background: rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--text-secondary);
}

.copy-button:hover {
    background: rgba(0, 0, 0, 0.08);
    border-color: rgba(0, 0, 0, 0.12);
    color: var(--text-primary);
}

.copy-button.copied {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: #ffffff;
}

[data-theme="dark"] .copy-button {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .copy-button:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.15);
}

[data-theme="dark"] .copy-button.copied {
    background: var(--accent-secondary);
    border-color: var(--accent-secondary);
}

.step-note {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    background: rgba(59, 130, 246, 0.08);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 8px;
    padding: 12px 16px;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-top: 12px;
}

.step-note.warning {
    background: rgba(251, 146, 60, 0.08);
    border-color: rgba(251, 146, 60, 0.2);
}

[data-theme="dark"] .step-note {
    background: rgba(59, 130, 246, 0.12);
    border-color: rgba(59, 130, 246, 0.25);
}

[data-theme="dark"] .step-note.warning {
    background: rgba(251, 146, 60, 0.12);
    border-color: rgba(251, 146, 60, 0.25);
}

.note-icon {
    flex-shrink: 0;
    font-size: 16px;
    line-height: 1;
}

.installation-help {
    margin-top: 30px;
    padding-top: 30px;
    border-top: 1px solid rgba(0, 0, 0, 0.08);
    text-align: center;
}

[data-theme="dark"] .installation-help {
    border-top-color: rgba(255, 255, 255, 0.1);
}

.installation-help p {
    font-size: 15px;
    color: var(--text-secondary);
}

.installation-help a {
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

.installation-help a:hover {
    color: var(--accent-secondary);
    text-decoration: underline;
}

[data-theme="dark"] .installation-help a {
    color: var(--accent-secondary);
}

[data-theme="dark"] .installation-help a:hover {
    color: var(--accent-primary);
}

.installation-confirm {
    margin-top: 30px;
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(0, 0, 0, 0.08);
}

[data-theme="dark"] .installation-confirm {
    border-top-color: rgba(255, 255, 255, 0.1);
}

.btn-confirm-download {
    position: relative;
    padding: 18px 48px;
    background: linear-gradient(135deg, var(--accent-secondary), #60a5fa);
    color: #ffffff;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.3);
    overflow: hidden;
}

.btn-confirm-download::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.btn-confirm-download:hover::before {
    width: 300px;
    height: 300px;
}

.btn-confirm-download:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 28px rgba(59, 130, 246, 0.5);
}

.btn-confirm-download:active {
    transform: translateY(-1px) scale(0.98);
}

.btn-confirm-download.pulse {
    animation: pulseButton 2s ease-in-out infinite;
}

@keyframes pulseButton {
    0%, 100% {
        box-shadow: 0 4px 16px rgba(59, 130, 246, 0.3);
    }
    50% {
        box-shadow: 0 6px 32px rgba(59, 130, 246, 0.6);
        transform: scale(1.02);
    }
}

[data-theme="dark"] .btn-confirm-download {
    background: linear-gradient(135deg, var(--accent-secondary), #60a5fa);
}

[data-theme="dark"] .btn-confirm-download:hover {
    transform: translateY(-3px) scale(1.02);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .installation-guide {
        padding: 24px;
    }

    .installation-step {
        gap: 15px;
    }

    .step-number {
        width: 32px;
        height: 32px;
        font-size: 14px;
    }

    .step-content h5 {
        font-size: 16px;
    }

    .step-content p {
        font-size: 14px;
    }

    .command-block {
        padding: 12px 40px 12px 12px;
    }

    .command-block code {
        font-size: 12px;
    }

    .copy-button {
        width: 28px;
        height: 28px;
        right: 8px;
    }

    .copy-button svg {
        width: 14px;
        height: 14px;
    }

    .step-note {
        font-size: 13px;
        padding: 10px 12px;
    }
}

.no-version {
    text-align: center;
    padding: 100px;
    font-size: 18px;
    color: var(--text-tertiary);
}

/* ==================== 页脚 ==================== */
.footer {
    background-color: var(--accent-primary);
    padding: 80px 0 40px;
    color: #ffffff;
}

[data-theme="dark"] .footer {
    background-color: #0a0a0a;
    color: #ffffff;
}

.footer-content {
    text-align: center;
}

.footer-logo {
    font-size: 48px;
    font-weight: 900;
    letter-spacing: 4px;
    margin-bottom: 20px;
}

.footer-tagline {
    font-size: 16px;
    font-weight: 300;
    letter-spacing: 2px;
    margin-bottom: 40px;
    opacity: 0.8;
}

.footer-bottom p {
    font-size: 12px;
    opacity: 0.6;
    letter-spacing: 1px;
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 1024px) {
    .download-grid {
        grid-template-columns: 1fr;
        gap: 60px;
    }

    .version-meta-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        gap: 25px;
    }

    .nav-link {
        font-size: 13px;
    }
    
    .logo h1 {
        font-size: 24px;
    }

    .hero-carousel {
        min-height: 500px;
    }

    .carousel-btn {
        width: 50px;
        height: 50px;
    }

    .carousel-btn-prev {
        left: 20px;
    }

    .carousel-btn-next {
        right: 20px;
    }

    .features,
    .download {
        padding: 80px 0;
    }

    .section-header {
        margin-bottom: 60px;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .feature-card {
        padding: 25px;
        gap: 15px;
    }

    .features-btn {
        top: 150px; /* 平板端调整按钮位置 */
    }

    .feature-number {
        font-size: 36px;
    }

    .feature-title {
        font-size: 18px;
    }

    .feature-hint {
        font-size: 12px;
    }

    .features-btn {
        width: 45px;
        height: 45px;
        /* 在平板上让按钮更容易看到 */
        opacity: 0.7;
        pointer-events: auto;
    }

    .features-btn.nearby {
        opacity: 1;
    }

    .features-btn-prev {
        left: 5px;
    }

    .features-btn-next {
        right: 5px;
    }

    /* 平板上让指示器始终可见 */
    .features-indicators {
        opacity: 0.7;
        pointer-events: auto;
    }

    .features-indicators.nearby {
        opacity: 1;
    }

    .download-card {
        padding: 40px 30px;
    }

    .version-meta-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .btn-download {
        padding: 25px 50px;
        width: 100%;
    }
}

/* 手机端 - 单列布局 */
@media (max-width: 480px) {
    .features-grid {
        grid-template-columns: 1fr;
        gap: 15px;
        min-height: 300px; /* 手机端调整最小高度 */
    }

    .feature-card {
        padding: 20px;
    }

    .features-btn {
        top: 120px; /* 手机端调整按钮位置 */
    }

    .feature-number {
        font-size: 32px;
    }

    .feature-title {
        font-size: 16px;
    }

    .features-btn {
        width: 40px;
        height: 40px;
        /* 在手机上让按钮始终可见 */
        opacity: 0.8;
        pointer-events: auto;
    }

    .features-btn.nearby,
    .features-btn:active {
        opacity: 1;
    }

    .features-indicators {
        bottom: -50px;
        /* 在手机上让指示器始终可见 */
        opacity: 1;
        pointer-events: auto;
    }

    /* 手机端每页只显示2个特性（在JS中动态控制） */
    .features-carousel-container {
        padding: 0 10px;
    }

    .features-indicator {
        width: 25px;
    }

    .features-indicator.active {
        width: 35px;
    }
}

/* ==================== License 申请功能样式 ==================== */

/* 申请按钮组 */
.action-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    justify-content: center;
}

.btn-apply {
    position: relative;
    padding: 30px 60px;
    background: linear-gradient(135deg, var(--accent-secondary), #60a5fa);
    color: #ffffff;
    border: none;
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    cursor: pointer;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 6px 24px rgba(59, 130, 246, 0.4);
}

[data-theme="dark"] .btn-apply {
    background: linear-gradient(135deg, var(--accent-secondary), #60a5fa);
    color: #ffffff;
}

.btn-apply::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.btn-apply:hover::before {
    width: 400px;
    height: 400px;
}

.btn-apply:hover {
    transform: translateY(-6px) scale(1.03);
    box-shadow: 0 12px 48px rgba(59, 130, 246, 0.6);
}

.btn-apply:active {
    transform: translateY(-2px) scale(0.98);
}

/* 弹窗样式 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(30px);
    z-index: 10000;
    justify-content: center;
    align-items: center;
    padding: 20px;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.modal-content {
    background: var(--bg-color);
    border-radius: 16px;
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: slideUp 0.3s ease;
}

/* License 弹窗特殊样式 */
#licenseModal .modal-content {
    max-width: 480px;
    max-height: fit-content;
    overflow-y: visible;
}

#licenseModal .modal-body {
    padding: 20px 30px 25px;
}

@keyframes slideUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    padding: 25px 30px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    margin: 0;
    font-size: 1.5rem;
    color: var(--text-color);
}

.modal-close {
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--text-color);
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.modal-close:hover {
    background: var(--hover-bg);
    transform: rotate(90deg);
}

.modal-body {
    padding: 30px;
}

/* License 测试阶段提醒 */
/* 开发者验证面板 */
.developer-verify-panel {
    text-align: center;
    padding: 10px 0;
}

.verify-notice {
    margin-bottom: 25px;
}

.verify-notice h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 10px 0;
}

.verify-notice p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
    margin: 0;
}

/* 紧凑表单样式 */
.license-form-compact {
    padding: 10px 0;
}

.license-form-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
    margin-bottom: 20px;
}

.license-form-compact .form-group {
    margin-bottom: 0;
}

.license-form-compact .form-group label {
    margin-bottom: 6px;
    font-size: 14px;
}

.license-form-compact .form-control {
    padding: 10px 12px;
    font-size: 14px;
}

.developer-verify-panel .form-group {
    text-align: left;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

.developer-verify-panel .form-group label {
    margin-bottom: 6px;
    font-size: 14px;
}

.developer-verify-panel .form-control {
    padding: 10px 12px;
    font-size: 14px;
}

.license-form-compact .form-actions,
.developer-verify-panel .form-actions {
    margin-top: 20px;
}

.license-form-compact .btn-cancel,
.license-form-compact .btn-submit,
.developer-verify-panel .btn-cancel,
.developer-verify-panel .btn-submit {
    padding: 10px 24px;
    font-size: 14px;
}

.license-notice {
    background: rgba(59, 130, 246, 0.08);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 8px;
    padding: 15px 18px;
    margin-bottom: 25px;
}

.license-notice p {
    margin: 0;
    font-size: 14px;
    line-height: 1.6;
    color: rgba(59, 130, 246, 1);
}

[data-theme="dark"] .license-notice {
    background: rgba(59, 130, 246, 0.12);
    border-color: rgba(59, 130, 246, 0.25);
}

[data-theme="dark"] .license-notice p {
    color: rgba(96, 165, 250, 1);
}

/* 表单样式 */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-color);
    font-weight: 500;
    font-size: 0.95rem;
}

.form-group .required {
    color: #ff6b6b;
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    color: var(--text-color);
    background: var(--bg-color);
    transition: all 0.3s ease;
    font-family: inherit;
    box-sizing: border-box;
}

.form-control:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-control::placeholder {
    color: var(--text-secondary);
}

/* Select下拉框样式 */
select.form-control {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
}

[data-theme="dark"] select.form-control {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23b0b0b0' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
}

select.form-control option {
    background: var(--bg-color);
    color: var(--text-color);
}

textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

.form-hint {
    display: block;
    margin-top: 5px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.btn-parse {
    margin-top: 10px;
    padding: 8px 20px;
    background: linear-gradient(135deg, var(--accent-secondary), #60a5fa);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    box-shadow: 0 3px 12px rgba(59, 130, 246, 0.3);
}

.btn-parse::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.5s ease, height 0.5s ease;
}

.btn-parse:hover::before {
    width: 200px;
    height: 200px;
}

.btn-parse:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.5);
}

.form-divider {
    text-align: center;
    margin: 25px 0;
    position: relative;
}

.form-divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--border-color);
}

.form-divider span {
    position: relative;
    background: var(--bg-color);
    padding: 0 15px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* 反馈标签导航 */
.feedback-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 25px;
    padding: 4px;
    background: rgba(0, 0, 0, 0.02);
    border-radius: 10px;
}

[data-theme="dark"] .feedback-tabs {
    background: rgba(255, 255, 255, 0.05);
}

.feedback-tab {
    flex: 1;
    padding: 10px 20px;
    background: transparent;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.feedback-tab:hover {
    color: var(--text-primary);
    background: rgba(0, 0, 0, 0.04);
}

[data-theme="dark"] .feedback-tab:hover {
    background: rgba(255, 255, 255, 0.08);
}

.feedback-tab.active {
    color: #ffffff;
    background: linear-gradient(135deg, var(--accent-secondary), #60a5fa);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

/* 反馈面板 */
.feedback-panel {
    display: none;
}

.feedback-panel.active {
    display: block;
}

/* 查询结果容器 */
.feedback-results-wrapper {
    margin-top: 24px;
    border-radius: 12px;
    overflow: hidden;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.03), rgba(96, 165, 250, 0.03));
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

[data-theme="dark"] .feedback-results-wrapper {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.08), rgba(96, 165, 250, 0.08));
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.feedback-results-wrapper:has(.feedback-results:empty) {
    display: none;
}

/* 手机端查询反馈结果显示修复 */
@media (max-width: 768px) {
    .feedback-results-wrapper {
        display: block !important;
        margin-top: 20px;
        max-height: none;
    }
    
    .feedback-results {
        max-height: 300px;
        overflow-y: auto;
        padding: 12px;
    }
    
    .feedback-results:empty {
        display: none;
    }
    
    .feedback-results:not(:empty) {
        display: block !important;
    }
    
    .feedback-result-item {
        padding: 12px;
        margin-bottom: 8px;
    }
    
    .feedback-result-header {
        flex-wrap: wrap;
        gap: 8px;
    }
    
    .feedback-result-content h4 {
        font-size: 12px;
    }
    
    .feedback-result-content p {
        font-size: 13px;
    }
}

/* 查询结果滚动区域 */
.feedback-results {
    max-height: 420px;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 16px;
    scrollbar-width: thin;
    scrollbar-color: var(--accent-secondary) transparent;
}

/* 自定义滚动条样式 */
.feedback-results::-webkit-scrollbar {
    width: 8px;
}

.feedback-results::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.03);
    border-radius: 4px;
}

[data-theme="dark"] .feedback-results::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
}

.feedback-results::-webkit-scrollbar-thumb {
    background: var(--accent-secondary);
    border-radius: 4px;
    transition: background 0.3s ease;
}

.feedback-results::-webkit-scrollbar-thumb:hover {
    background: #60a5fa;
}

.feedback-results:empty {
    display: none;
}

/* 反馈项卡片 */
.feedback-result-item {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 16px;
    margin-bottom: 10px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.feedback-result-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 3px;
    background: var(--accent-secondary);
    transform: scaleY(0);
    transition: transform 0.3s ease;
}

.feedback-result-item:hover::before {
    transform: scaleY(1);
}

.feedback-result-item:last-child {
    margin-bottom: 0;
}

.feedback-result-item:hover {
    transform: translateX(4px);
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.15);
    border-color: rgba(59, 130, 246, 0.3);
}

[data-theme="dark"] .feedback-result-item:hover {
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.25);
}

/* 反馈头部 */
.feedback-result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--border-color);
}

/* 类型和状态标签 */
.feedback-result-type,
.feedback-result-status {
    padding: 5px 12px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.feedback-result-type.suggestion {
    background: rgba(59, 130, 246, 0.1);
    color: rgb(59, 130, 246);
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.feedback-result-type.bug {
    background: rgba(239, 68, 68, 0.1);
    color: rgb(239, 68, 68);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.feedback-result-type.question {
    background: rgba(251, 146, 60, 0.1);
    color: rgb(251, 146, 60);
    border: 1px solid rgba(251, 146, 60, 0.2);
}

.feedback-result-type.other {
    background: rgba(107, 114, 128, 0.1);
    color: rgb(107, 114, 128);
    border: 1px solid rgba(107, 114, 128, 0.2);
}

.feedback-result-status.pending {
    background: rgba(251, 146, 60, 0.1);
    color: rgb(251, 146, 60);
    border: 1px solid rgba(251, 146, 60, 0.2);
}

.feedback-result-status.processing {
    background: rgba(59, 130, 246, 0.1);
    color: rgb(59, 130, 246);
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.feedback-result-status.completed {
    background: rgba(34, 197, 94, 0.1);
    color: rgb(34, 197, 94);
    border: 1px solid rgba(34, 197, 94, 0.2);
}

/* 反馈内容 */
.feedback-result-content {
    margin-bottom: 14px;
}

.feedback-result-content h4 {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 8px;
    opacity: 0.7;
}

.feedback-result-content p {
    font-size: 14px;
    color: var(--text-color);
    line-height: 1.7;
    margin: 0;
}

/* 官方回复 */
.feedback-result-reply {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.05), rgba(96, 165, 250, 0.05));
    border-left: 3px solid var(--accent-secondary);
    padding: 12px 14px;
    border-radius: 8px;
    margin-top: 12px;
}

[data-theme="dark"] .feedback-result-reply {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(96, 165, 250, 0.1));
}

.feedback-result-reply h4 {
    font-size: 13px;
    font-weight: 600;
    color: rgb(99, 102, 241);
    margin-bottom: 8px;
}

.feedback-result-reply p {
    font-size: 14px;
    color: var(--text-color);
    line-height: 1.7;
    margin: 0;
}

/* 时间信息 */
.feedback-result-date {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 12px;
    opacity: 0.7;
}

/* 无结果提示 */
.feedback-no-results {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.feedback-no-results p {
    font-size: 14px;
    margin: 0;
    opacity: 0.8;
}

.form-actions {
    display: flex;
    gap: 15px;
    margin-top: 30px;
    justify-content: flex-end;
}

.btn-cancel,
.btn-submit {
    padding: 12px 30px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-cancel {
    background: var(--hover-bg);
    color: var(--text-color);
}

.btn-cancel:hover {
    background: var(--border-color);
}

.btn-submit {
    position: relative;
    background: linear-gradient(135deg, var(--accent-secondary), #60a5fa);
    color: white;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.3);
}

.btn-submit::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.btn-submit:hover::before {
    width: 300px;
    height: 300px;
}

.btn-submit:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 28px rgba(59, 130, 246, 0.5);
}

.btn-submit:active {
    transform: translateY(-1px) scale(0.98);
}

.btn-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* 通知样式 */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 15px 20px;
    border-radius: 8px;
    color: white;
    font-size: 0.95rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 10001;
    opacity: 0;
    transform: translateX(400px);
    transition: all 0.3s ease;
}

.notification.show {
    opacity: 1;
    transform: translateX(0);
}

.notification-success {
    background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
}

.notification-error {
    background: linear-gradient(135deg, #eb3349 0%, #f45c43 100%);
}

.notification-warning {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.notification-info {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

/* 暗色主题适配 */
[data-theme="dark"] .modal {
    background: rgba(0, 0, 0, 0.85);
}

[data-theme="dark"] .modal-content {
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .action-buttons {
        flex-direction: column;
        width: 100%;
    }

    .btn-download,
    .btn-apply {
        width: 100%;
    }

    .modal-content {
        margin: 0 10px;
    }

    .modal-header,
    .modal-body {
        padding: 20px;
    }

    .form-actions {
        flex-direction: column;
    }

    .btn-cancel,
    .btn-submit {
        width: 100%;
    }

    .notification {
        left: 20px;
        right: 20px;
    }
}

/* ==================== 固定在左下角的备案号 ==================== */
.fixed-icp {
    position: fixed;
    bottom: 20px;
    left: 20px;
    z-index: 50;
    font-size: 12px;
    opacity: 0.3;
    transition: opacity 0.3s ease;
}

.fixed-icp:hover {
    opacity: 0.6;
}

.fixed-icp a {
    color: #999;
    text-decoration: none;
    transition: color 0.3s ease;
}

.fixed-icp a:hover {
    color: #666;
}

[data-theme="dark"] .fixed-icp a {
    color: #666;
}

[data-theme="dark"] .fixed-icp a:hover {
    color: #999;
}

@media (max-width: 768px) {
    .fixed-icp {
        font-size: 10px;
        bottom: 15px;
        left: 15px;
    }
}

/* ==================== 核心特性详情页样式 ==================== */

/* 特性卡片可点击效果 */
.feature-card {
    cursor: pointer;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translate3d(0, -5px, 0) scale(1.02);
    box-shadow: var(--shadow-lg);
}

.feature-card:active {
    transform: translate3d(0, -2px, 0) scale(1.01);
}

/* 较大的模态框 */
.modal-content.modal-lg {
    max-width: 80vw !important;
    width: 80vw !important;
    max-height: 85vh;
    overflow-y: auto;
    padding: 40px;
}

/* Markdown 内容渲染样式 */
.markdown-content {
    line-height: 2;
    color: var(--text-primary);
    font-size: 18px;
    max-width: 100%;
    padding: 20px;
}

.markdown-content h1,
.markdown-content h2,
.markdown-content h3,
.markdown-content h4,
.markdown-content h5,
.markdown-content h6 {
    margin-top: 32px;
    margin-bottom: 20px;
    font-weight: 600;
    line-height: 1.4;
    color: var(--text-primary);
}

.markdown-content h1 {
    font-size: 2em;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.3em;
}

.markdown-content h2 {
    font-size: 1.5em;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.3em;
}

.markdown-content h3 {
    font-size: 1.25em;
}

.markdown-content h4 {
    font-size: 1em;
}

.markdown-content h5 {
    font-size: 0.875em;
}

.markdown-content h6 {
    font-size: 0.85em;
    color: var(--text-secondary);
}

.markdown-content p {
    margin-bottom: 24px;
    line-height: 2;
}

.markdown-content a {
    color: var(--accent-secondary);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s;
}

.markdown-content a:hover {
    border-bottom-color: var(--accent-secondary);
}

.markdown-content ul,
.markdown-content ol {
    margin-bottom: 24px;
    padding-left: 2.5em;
}

.markdown-content li {
    margin-bottom: 12px;
    line-height: 1.8;
}

.markdown-content code {
    background: var(--bg-secondary);
    padding: 0.2em 0.4em;
    border-radius: 6px;
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;
    font-size: 0.9em;
    color: var(--accent-secondary);
}

.markdown-content pre {
    background: var(--bg-secondary);
    padding: 24px;
    border-radius: 8px;
    overflow-x: auto;
    margin-bottom: 24px;
    border: 1px solid var(--border-color);
}

.markdown-content pre code {
    background: none;
    padding: 0;
    color: var(--text-primary);
    font-size: 0.9em;
}

.markdown-content blockquote {
    border-left: 4px solid var(--accent-secondary);
    padding-left: 24px;
    margin: 24px 0;
    color: var(--text-secondary);
    font-style: italic;
}

.markdown-content table {
    border-collapse: collapse;
    width: 100%;
    margin-bottom: 24px;
    border: 1px solid var(--border-color);
}

.markdown-content table th,
.markdown-content table td {
    padding: 16px 20px;
    border: 1px solid var(--border-color);
    text-align: left;
}

.markdown-content table th {
    background: var(--bg-secondary);
    font-weight: 600;
}

.markdown-content table tr:nth-child(even) {
    background: var(--bg-secondary);
}

.markdown-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 32px 0;
}

.markdown-content hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 40px 0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .modal-content.modal-lg {
        max-width: 95% !important;
        width: 95% !important;
        max-height: 90vh;
        padding: 20px;
    }

    .markdown-content {
        font-size: 16px;
        padding: 10px;
    }

    .markdown-content h1 {
        font-size: 1.75em;
    }

    .markdown-content h2 {
        font-size: 1.4em;
    }

    .markdown-content h3 {
        font-size: 1.2em;
    }

    .markdown-content pre {
        padding: 12px;
        font-size: 0.85em;
    }

    .markdown-content table {
        font-size: 0.9em;
    }

    .markdown-content table th,
    .markdown-content table td {
        padding: 8px 12px;
    }
}

/* ==================== 展示区域样式 ==================== */
.showcase-section {
    height: 100vh;
    min-height: 100vh;
    max-height: none;
    display: flex;
    align-items: stretch;
    background-color: var(--bg-primary);
    position: relative;
    overflow: hidden;
    padding: 0;
}

.showcase-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

/* ==================== 背景图片层 ==================== */
.showcase-image-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    overflow: hidden;
}

.showcase-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
}

/* 如果图片加载失败，显示设计的背景 */
.showcase-image-layer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg,
        #ffffff 0%,
        #f0f7ff 25%,
        #e0efff 50%,
        #c9e2ff 75%,
        #b8d9ff 100%);
    z-index: -1;
}

/* 暗色主题背景 */
[data-theme="dark"] .showcase-image-layer::before {
    background: linear-gradient(135deg,
        #1a1a2e 0%,
        #1f2a40 25%,
        #243b55 50%,
        #2a4a6a 75%,
        #305a80 100%);
}

/* 背景装饰圆形 - 亮色主题 */
.showcase-image-layer::after {
    content: '';
    position: absolute;
    top: -10%;
    right: -5%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle,
        rgba(59, 130, 246, 0.15) 0%,
        rgba(96, 165, 250, 0.08) 40%,
        transparent 70%);
    border-radius: 50%;
    animation: floatSlow 20s ease-in-out infinite;
    z-index: -1;
}

[data-theme="dark"] .showcase-image-layer::after {
    background: radial-gradient(circle, 
        rgba(59, 130, 246, 0.25) 0%, 
        rgba(96, 165, 250, 0.12) 40%, 
        transparent 70%);
}

/* 额外的装饰元素 */
.showcase-image-layer {
    position: relative;
}

/* 左下角装饰圆 */
.showcase-image-layer .bg-decoration-1 {
    position: absolute;
    bottom: -10%;
    left: -5%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, 
        rgba(96, 165, 250, 0.12) 0%, 
        rgba(255, 180, 140, 0.06) 40%, 
        transparent 70%);
    border-radius: 50%;
    animation: floatSlow 25s ease-in-out infinite reverse;
    z-index: 0;
}

[data-theme="dark"] .showcase-image-layer .bg-decoration-1 {
    background: radial-gradient(circle, 
        rgba(96, 165, 250, 0.2) 0%, 
        rgba(255, 180, 140, 0.1) 40%, 
        transparent 70%);
}

/* 右侧装饰圆 */
.showcase-image-layer .bg-decoration-2 {
    position: absolute;
    top: 50%;
    right: 10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, 
        rgba(59, 130, 246, 0.08) 0%, 
        rgba(96, 165, 250, 0.04) 50%, 
        transparent 70%);
    border-radius: 50%;
    animation: floatMedium 18s ease-in-out infinite;
    z-index: 0;
}

[data-theme="dark"] .showcase-image-layer .bg-decoration-2 {
    background: radial-gradient(circle, 
        rgba(59, 130, 246, 0.18) 0%, 
        rgba(96, 165, 250, 0.08) 50%, 
        transparent 70%);
}

/* 点状纹理 */
.showcase-image-layer .bg-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(59, 130, 246, 0.03) 1px, transparent 1px),
        radial-gradient(circle at 60% 70%, rgba(96, 165, 250, 0.03) 1px, transparent 1px),
        radial-gradient(circle at 80% 20%, rgba(59, 130, 246, 0.02) 1px, transparent 1px);
    background-size: 80px 80px, 120px 120px, 100px 100px;
    background-position: 0 0, 40px 60px, 80px 20px;
    opacity: 0.5;
    z-index: 0;
}

[data-theme="dark"] .showcase-image-layer .bg-pattern {
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(59, 130, 246, 0.08) 1px, transparent 1px),
        radial-gradient(circle at 60% 70%, rgba(96, 165, 250, 0.06) 1px, transparent 1px),
        radial-gradient(circle at 80% 20%, rgba(59, 130, 246, 0.05) 1px, transparent 1px);
    opacity: 0.6;
}

/* 动画定义 */
@keyframes floatSlow {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(30px, -30px) scale(1.05);
    }
    66% {
        transform: translate(-30px, 30px) scale(0.95);
    }
}

@keyframes floatMedium {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg);
    }
    50% {
        transform: translate(-40px, -40px) rotate(180deg);
    }
}

/* 渐变遮罩：已移除黑色遮罩 */
.showcase-gradient-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: transparent;
    z-index: 2;
}

[data-theme="dark"] .showcase-gradient-overlay {
    background: transparent;
}

/* ==================== 前景文字内容层 ==================== */
.showcase-content-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    z-index: 3;
}

.showcase-content-container {
    position: relative;
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0;
    height: 650px;
}

/* ==================== 右侧图片预览窗口（背景层） ==================== */
.showcase-preview-window {
    position: absolute;
    right: 0;
    top: 0;
    width: calc(50% - 10px);
    height: 650px;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.3);
    z-index: 1;
    display: none; /* 隐藏预览窗口 */
}

.showcase-preview-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.showcase-preview-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0.3) 0%,
        transparent 30%,
        transparent 70%,
        rgba(0, 0, 0, 0.5) 100%
    );
    display: flex;
    align-items: flex-end;
    padding: 30px;
}

.showcase-preview-text {
    color: #ffffff;
    font-size: 18px;
    font-weight: 600;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
}

/* ==================== 左侧模糊文字框（固定展开） ==================== */
.showcase-text-content {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%; /* 固定为100%宽度 */
    height: 650px;
    display: flex;
    flex-direction: column;
    padding: 60px 80px 80px 80px;
    background: rgba(0, 0, 0, 0.15);
    border-radius: 20px;
    backdrop-filter: blur(8px);
    overflow: hidden;
    z-index: 2;
    /* 使用 filter: drop-shadow 让阴影跟随圆角 */
    filter: drop-shadow(0 8px 24px rgba(0, 0, 0, 0.3));
}

.showcase-text-wrapper {
    flex: 1;
    min-height: 0; /* 允许 flex 子元素缩小 */
    display: flex;
    flex-direction: column;
    gap: 20px;
    opacity: 1;
    transition: opacity 0.5s ease;
    overflow: hidden; /* 外层不滚动 */
}

/* 标题和副标题固定，不滚动 */
.showcase-title,
.showcase-subtitle {
    flex-shrink: 0; /* 防止被压缩 */
}

/* 描述部分可滚动 */
.showcase-description {
    flex: 1;
    min-height: 0; /* 允许 flex 子元素缩小 */
    overflow-y: auto; /* 允许垂直滚动 */
    overflow-x: hidden;
    padding-right: 8px; /* 为滚动条留出空间 */
    margin-right: -8px; /* 抵消 padding，保持内容对齐 */
    position: relative; /* 为渐变遮罩定位 */
    /* 自定义滚动条样式 */
    scrollbar-width: thin;
    scrollbar-color: rgba(59, 130, 246, 0.4) transparent;
}

/* 当内容被截断时，使用 mask-image 和模糊效果实现渐变消失 */
.showcase-description:not(.scrolled-to-bottom) {
    mask-image: linear-gradient(
        to bottom,
        black 0%,
        black calc(100% - 80px),
        rgba(0, 0, 0, 0.9) calc(100% - 60px),
        rgba(0, 0, 0, 0.6) calc(100% - 40px),
        rgba(0, 0, 0, 0.3) calc(100% - 20px),
        transparent 100%
    );
    -webkit-mask-image: linear-gradient(
        to bottom,
        black 0%,
        black calc(100% - 80px),
        rgba(0, 0, 0, 0.9) calc(100% - 60px),
        rgba(0, 0, 0, 0.6) calc(100% - 40px),
        rgba(0, 0, 0, 0.3) calc(100% - 20px),
        transparent 100%
    );
    /* 添加模糊效果 */
    filter: blur(0px);
    position: relative;
}

/* 使用伪元素添加模糊遮罩层（无背景色，只有模糊） */
.showcase-description:not(.scrolled-to-bottom)::after {
    content: '';
    position: sticky;
    bottom: 0;
    left: 0;
    right: 8px;
    width: 100%;
    height: 100px;
    background: transparent;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    mask-image: linear-gradient(
        to bottom,
        transparent 0%,
        rgba(0, 0, 0, 0.3) 30%,
        rgba(0, 0, 0, 0.7) 70%,
        rgba(0, 0, 0, 1) 100%
    );
    -webkit-mask-image: linear-gradient(
        to bottom,
        transparent 0%,
        rgba(0, 0, 0, 0.3) 30%,
        rgba(0, 0, 0, 0.7) 70%,
        rgba(0, 0, 0, 1) 100%
    );
    pointer-events: none;
    z-index: 1000;
    margin-top: -100px;
    flex-shrink: 0;
}

/* 滚动到底部时，移除遮罩 */
.showcase-description.scrolled-to-bottom {
    mask-image: none;
    -webkit-mask-image: none;
    filter: none;
}

.showcase-description.scrolled-to-bottom::after {
    display: none;
}

/* 底部渐变遮罩效果 - 不再需要，改用 mask-image 直接作用在内容上 */

.showcase-description::-webkit-scrollbar {
    width: 6px;
}

.showcase-description::-webkit-scrollbar-track {
    background: transparent;
}

.showcase-description::-webkit-scrollbar-thumb {
    background: rgba(59, 130, 246, 0.4);
    border-radius: 3px;
    transition: background 0.3s ease;
}

.showcase-description::-webkit-scrollbar-thumb:hover {
    background: rgba(59, 130, 246, 0.6);
}

.showcase-text-wrapper.fade-out {
    opacity: 0;
}

.showcase-text-wrapper.fade-in {
    opacity: 1;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.showcase-tags {
    display: none;
}

.showcase-tag {
    padding: 12px 26px;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 22px;
    font-size: 16px;
    font-weight: 600;
    color: #ffffff;
    transition: all 0.3s ease;
    backdrop-filter: blur(12px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

.showcase-tag:hover {
    transform: translateY(-2px);
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.4);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.showcase-title {
    font-size: clamp(48px, 5.5vw, 78px);
    font-weight: 900;
    color: #ffffff;
    margin: 0;
    line-height: 1.2;
    letter-spacing: -0.02em;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.4),
                 0 2px 8px rgba(0, 0, 0, 0.3);
}

.showcase-subtitle {
    font-size: clamp(22px, 2.8vw, 32px);
    font-weight: 600;
    color: var(--accent-secondary);
    margin: 0;
    letter-spacing: 0.5px;
    text-shadow: 0 2px 12px rgba(0, 0, 0, 0.5),
                 0 1px 4px rgba(0, 0, 0, 0.3);
}

.showcase-description {
    font-size: 22px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.95);
    margin: 0;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5),
                 0 1px 4px rgba(0, 0, 0, 0.3);
}

/* Markdown 内容样式 - 轮播图文字 */
.showcase-title a,
.showcase-subtitle a,
.showcase-description a {
    color: var(--accent-secondary);
    text-decoration: none;
    border-bottom: 1px solid rgba(59, 130, 246, 0.3);
    transition: all 0.3s ease;
}

.showcase-title a:hover,
.showcase-subtitle a:hover,
.showcase-description a:hover {
    color: #60a5fa;
    border-bottom-color: rgba(96, 165, 250, 0.6);
    text-shadow: 0 0 8px rgba(59, 130, 246, 0.5);
}

.showcase-title strong,
.showcase-subtitle strong,
.showcase-description strong {
    font-weight: 700;
    color: #ffffff;
}

.showcase-title em,
.showcase-subtitle em,
.showcase-description em {
    font-style: italic;
    color: rgba(255, 255, 255, 0.9);
}

.showcase-title code,
.showcase-subtitle code,
.showcase-description code {
    background: rgba(0, 0, 0, 0.3);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
    font-size: 0.9em;
    color: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.showcase-description p {
    margin: 0.5em 0;
}

.showcase-description p:first-child {
    margin-top: 0;
}

.showcase-description p:last-child {
    margin-bottom: 0;
}

.showcase-description ul,
.showcase-description ol {
    margin: 0.5em 0;
    padding-left: 1.5em;
}

.showcase-description li {
    margin: 0.3em 0;
}

.showcase-description blockquote {
    margin: 0.5em 0;
    padding-left: 1em;
    border-left: 3px solid var(--accent-secondary);
    color: rgba(255, 255, 255, 0.85);
    font-style: italic;
}

/* 亮色模式下的文字颜色适配 */
:root .showcase-text-content {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
}

:root .showcase-tag {
    background: rgba(59, 130, 246, 0.1);
    border-color: rgba(59, 130, 246, 0.3);
    color: #1e40af;
}

:root .showcase-tag:hover {
    background: rgba(59, 130, 246, 0.2);
    border-color: rgba(59, 130, 246, 0.5);
}

:root .showcase-title {
    color: #1e3a5f;
    text-shadow: none;
}

:root .showcase-subtitle {
    color: #3b82f6;
    text-shadow: none;
}

:root .showcase-description {
    color: #334155;
    text-shadow: none;
}

:root .showcase-title strong,
:root .showcase-subtitle strong,
:root .showcase-description strong {
    color: #1e3a5f;
}

:root .showcase-title em,
:root .showcase-subtitle em,
:root .showcase-description em {
    color: #475569;
}

:root .showcase-title code,
:root .showcase-subtitle code,
:root .showcase-description code {
    background: rgba(59, 130, 246, 0.1);
    color: #1e40af;
    border-color: rgba(59, 130, 246, 0.2);
}

:root .showcase-description blockquote {
    color: #475569;
}

:root .showcase-btn-secondary {
    background: rgba(30, 58, 95, 0.1);
    border-color: rgba(30, 58, 95, 0.3);
    color: #1e3a5f;
}

:root .showcase-btn-secondary:hover {
    background: rgba(30, 58, 95, 0.2);
    border-color: rgba(30, 58, 95, 0.5);
}

/* 暗色模式恢复白色文字 */
[data-theme="dark"] .showcase-text-content {
    background: rgba(0, 0, 0, 0.15);
}

[data-theme="dark"] .showcase-tag {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
    color: #ffffff;
}

[data-theme="dark"] .showcase-title {
    color: #ffffff;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.4),
                 0 2px 8px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .showcase-subtitle {
    color: var(--accent-secondary);
    text-shadow: 0 2px 12px rgba(0, 0, 0, 0.5),
                 0 1px 4px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .showcase-description {
    color: rgba(255, 255, 255, 0.95);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5),
                 0 1px 4px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .showcase-title strong,
[data-theme="dark"] .showcase-subtitle strong,
[data-theme="dark"] .showcase-description strong {
    color: #ffffff;
}

[data-theme="dark"] .showcase-title em,
[data-theme="dark"] .showcase-subtitle em,
[data-theme="dark"] .showcase-description em {
    color: rgba(255, 255, 255, 0.9);
}

[data-theme="dark"] .showcase-title code,
[data-theme="dark"] .showcase-subtitle code,
[data-theme="dark"] .showcase-description code {
    background: rgba(0, 0, 0, 0.3);
    color: rgba(255, 255, 255, 0.9);
    border-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .showcase-description blockquote {
    color: rgba(255, 255, 255, 0.85);
}

[data-theme="dark"] .showcase-btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.3);
    color: #ffffff;
}

/* 亮色模式 - 换页按钮适配 */
:root .showcase-nav-btn {
    background: rgba(59, 130, 246, 0.1);
    border-color: rgba(59, 130, 246, 0.3);
    color: #1e40af;
}

:root .showcase-nav-btn:hover {
    background: rgba(59, 130, 246, 0.2);
    border-color: rgba(59, 130, 246, 0.5);
}

/* 亮色模式 - 换页指示器适配 */
:root .showcase-indicator {
    background: rgba(59, 130, 246, 0.2);
    border-color: rgba(59, 130, 246, 0.4);
}

:root .showcase-indicator:hover {
    background: rgba(59, 130, 246, 0.4);
}

:root .showcase-indicator.active {
    background: #3b82f6;
    border-color: #3b82f6;
}

/* 亮色模式 - 预览窗口适配 */
:root .showcase-preview-overlay {
    background: linear-gradient(
        to bottom,
        rgba(255, 255, 255, 0.1) 0%,
        transparent 30%,
        transparent 70%,
        rgba(255, 255, 255, 0.3) 100%
    );
}

:root .showcase-preview-text {
    color: #1e3a5f;
    text-shadow: 0 2px 8px rgba(255, 255, 255, 0.8);
}

/* 亮色模式 - 查看图片按钮适配 */
:root .showcase-btn-view {
    background: rgba(59, 130, 246, 0.1);
    color: #1e40af;
    border-color: rgba(59, 130, 246, 0.3);
}

:root .showcase-btn-view:hover {
    background: rgba(59, 130, 246, 0.2);
    border-color: rgba(59, 130, 246, 0.5);
    color: #1e40af;
}

/* 暗色模式 - 换页按钮 */
[data-theme="dark"] .showcase-nav-btn {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.3);
    color: #ffffff;
}

[data-theme="dark"] .showcase-nav-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
}

/* 暗色模式 - 换页指示器 */
[data-theme="dark"] .showcase-indicator {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
}

[data-theme="dark"] .showcase-indicator:hover {
    background: rgba(255, 255, 255, 0.5);
}

[data-theme="dark"] .showcase-indicator.active {
    background: rgba(255, 255, 255, 0.9);
    border-color: rgba(255, 255, 255, 0.9);
}

/* 暗色模式 - 预览窗口 */
[data-theme="dark"] .showcase-preview-text {
    color: #ffffff;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
}

/* 暗色模式 - 查看图片按钮 */
[data-theme="dark"] .showcase-btn-view {
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    border-color: rgba(255, 255, 255, 0.3);
}

[data-theme="dark"] .showcase-btn-view:hover {
    background: rgba(59, 130, 246, 0.3);
    border-color: var(--accent-secondary);
    color: #ffffff;
}

/* 按钮组容器 - 右下角布局 */
.showcase-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    justify-content: flex-end;
    margin-top: auto;
    flex-shrink: 0;
}

/* 按钮基础样式 */
.showcase-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 18px 38px;
    border-radius: 14px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    border: none;
    position: relative;
    overflow: hidden;
}

/* 按钮发光动画 */
.showcase-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.showcase-btn:hover::before {
    width: 300px;
    height: 300px;
}

.showcase-btn:active {
    transform: scale(0.95);
}

/* 主要按钮 - 立即下载 */
.showcase-btn-primary {
    background: linear-gradient(135deg, var(--accent-secondary), #60a5fa);
    color: #ffffff;
    box-shadow: 0 6px 24px rgba(59, 130, 246, 0.4);
}

.showcase-btn-primary:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 10px 40px rgba(59, 130, 246, 0.6);
}

/* 次要按钮 - 申请Pro */
.showcase-btn-secondary {
    background: rgba(255, 255, 255, 0.15);
    color: #ffffff;
    border: 2px solid var(--accent-secondary);
    backdrop-filter: blur(12px);
}

.showcase-btn-secondary:hover {
    background: var(--accent-secondary);
    border-color: var(--accent-secondary);
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 10px 40px rgba(59, 130, 246, 0.5);
}

/* 查看图片按钮 */
.showcase-btn-view {
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(12px);
}

.showcase-btn-view:hover {
    background: rgba(59, 130, 246, 0.3);
    border-color: var(--accent-secondary);
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 8px 32px rgba(59, 130, 246, 0.4);
}


/* ==================== 轮播控制按钮（在文字框内） ==================== */
.showcase-nav-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    backdrop-filter: blur(12px);
    color: #ffffff;
    cursor: pointer;
    transition: all 0.3s ease;
    opacity: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 悬浮时显示导航按钮 */
.showcase-text-content:hover .showcase-nav-btn {
    opacity: 1;
}

.showcase-nav-prev {
    left: 30px;
}

.showcase-nav-next {
    right: 30px;
}

.showcase-nav-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-50%) scale(1.1);
}

.showcase-nav-btn:active {
    transform: translateY(-50%) scale(0.95);
}

/* ==================== 轮播指示器（在文字框内） ==================== */
.showcase-indicators {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 10;
    opacity: 0;
    transition: opacity 0.3s ease;
}

/* 悬浮时显示指示器 */
.showcase-text-content:hover .showcase-indicators {
    opacity: 1;
}

.showcase-indicator {
    width: 12px;
    height: 12px;
    background: rgba(255, 255, 255, 0.3);
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
}

.showcase-indicator:hover {
    background: rgba(255, 255, 255, 0.5);
    transform: scale(1.2);
}

.showcase-indicator.active {
    background: rgba(255, 255, 255, 0.9);
    width: 32px;
    border-radius: 6px;
}

/* 内容淡入淡出动画 */
.showcase-text-content.fade-out {
    opacity: 0;
}

.showcase-text-content.fade-in {
    opacity: 1;
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 1024px) {
    .showcase-section {
        min-height: 100vh;
    }
    
    .showcase-content-container {
        padding: 0;
        height: 600px;
    }
    
    .showcase-preview-window {
        display: none; /* 隐藏预览窗口 */
    }
    
    .showcase-text-content {
        width: 100%; /* 固定为100%宽度 */
        height: 600px;
        padding: 50px 60px 70px 60px;
    }
    
    .showcase-nav-btn {
        width: 50px;
        height: 50px;
    }
    
    .showcase-nav-prev {
        left: 20px;
    }
    
    .showcase-nav-next {
        right: 20px;
    }
}

@media (max-width: 768px) {
    .showcase-section {
        min-height: 100vh;
        padding: 0;
    }
    
    .showcase-content-container {
        padding: 0 20px;
        height: auto;
        min-height: calc(100vh - 84px);
        display: flex;
        align-items: center;
    }
    
    .showcase-preview-window {
        display: none;
    }
    
    .showcase-text-content {
        text-align: center;
        width: 100%;
        height: auto;
        min-height: calc(100vh - 84px);
        padding: 60px 24px 80px 24px;
        position: relative;
        left: auto;
        right: auto;
        display: flex;
        flex-direction: column;
        justify-content: center;
        border-radius: 20px;
        /* 移动端阴影圆角 */
        filter: drop-shadow(0 8px 24px rgba(0, 0, 0, 0.3));
    }
    
    .showcase-text-wrapper {
        gap: 24px;
    }
    
    .showcase-title {
        font-size: clamp(36px, 8vw, 56px);
        line-height: 1.15;
        margin-bottom: 12px;
    }
    
    .showcase-subtitle {
        font-size: clamp(18px, 4vw, 24px);
        margin-bottom: 16px;
    }
    
    .showcase-description {
        font-size: clamp(14px, 3.5vw, 16px);
        line-height: 1.7;
        max-height: 40vh;
        margin-bottom: 24px;
    }
    
    .showcase-buttons {
        justify-content: center;
        gap: 12px;
        flex-wrap: wrap;
        margin-top: auto;
        padding-top: 24px;
    }
    
    .showcase-btn {
        padding: 16px 32px;
        font-size: 15px;
        min-width: 140px;
        flex: 0 0 auto;
    }
    
    /* 移动端隐藏轮播按钮 */
    .showcase-nav-btn {
        display: none !important;
    }
    
    .showcase-indicators {
        bottom: 24px;
        opacity: 1;
        gap: 8px;
    }
    
    .showcase-indicator {
        width: 8px;
        height: 8px;
    }
    
    .showcase-indicator.active {
        width: 24px;
    }

    .showcase-gradient-overlay {
        background: transparent;
    }
}

/* 小屏幕手机优化 */
@media (max-width: 480px) {
    .showcase-content-container {
        padding: 0 16px;
    }
    
    .showcase-text-content {
        padding: 50px 20px 70px 20px;
        min-height: calc(100vh - 84px);
        border-radius: 20px;
        /* 移动端阴影圆角 */
        filter: drop-shadow(0 8px 24px rgba(0, 0, 0, 0.3));
    }
    
    .showcase-title {
        font-size: clamp(32px, 9vw, 48px);
        line-height: 1.2;
        margin-bottom: 10px;
    }
    
    .showcase-subtitle {
        font-size: clamp(16px, 4.5vw, 20px);
        margin-bottom: 14px;
    }
    
    .showcase-description {
        font-size: clamp(13px, 3.8vw, 15px);
        line-height: 1.6;
        max-height: 35vh;
        margin-bottom: 20px;
    }
    
    .showcase-buttons {
        flex-direction: column;
        width: 100%;
        gap: 10px;
        padding-top: 20px;
    }
    
    .showcase-btn {
        width: 100%;
        padding: 16px 24px;
        font-size: 14px;
        min-width: auto;
    }
    
    /* 移动端隐藏轮播按钮 */
    .showcase-nav-btn {
        display: none !important;
    }
    
    .showcase-indicators {
        bottom: 20px;
        gap: 6px;
    }
    
    .showcase-indicator {
        width: 6px;
        height: 6px;
    }
    
    .showcase-indicator.active {
        width: 20px;
    }
}

/* ==================== 特性页面 - 单屏布局 ==================== */

.features-fullscreen {
    height: 100vh;
    width: 100%;
    position: relative;
    overflow: hidden;
    /* 防止滚动时出现渲染问题 */
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
}

.features-fullscreen-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.features-fullscreen-bg .showcase-gradient-overlay {
    z-index: 100;
    pointer-events: none;
}

.features-fullscreen-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg,
        #ffffff 0%,
        #f0f7ff 25%,
        #e0efff 50%,
        #c9e2ff 75%,
        #b8d9ff 100%);
    z-index: 0;
}

[data-theme="dark"] .features-fullscreen-bg::before {
    background: linear-gradient(135deg,
        #1a1a2e 0%,
        #1f2a40 25%,
        #243b55 50%,
        #2a4a6a 75%,
        #305a80 100%);
}

.features-fullscreen-container {
    position: relative;
    z-index: 50;
    height: calc(100vh - 84px);
    margin-top: 84px;
    display: flex;
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
    padding: 60px 0;
}

/* 左侧边栏 */
.features-sidebar {
    flex: 0 0 380px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding-right: 60px;
}

.features-sidebar-badge {
    display: inline-block;
    align-self: flex-start;
    padding: 8px 20px;
    background: linear-gradient(135deg, var(--accent-secondary), #60a5fa);
    color: #ffffff;
    border-radius: 25px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    margin-bottom: 30px;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}

.features-sidebar-title {
    font-size: 72px;
    font-weight: 900;
    color: rgba(255, 255, 255, 0.95);
    line-height: 1.1;
    margin: 0 0 15px 0;
    letter-spacing: -0.02em;
}

.features-sidebar-subtitle {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 30px;
    line-height: 1.6;
}

.features-sidebar-description {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.features-sidebar-description > p {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
    margin: 0;
}

.features-sidebar-highlights {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(20px);
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.8);
    transition: all 0.3s ease;
}

[data-theme="dark"] .highlight-item {
    background: rgba(26, 26, 26, 0.6);
    border-color: rgba(255, 255, 255, 0.15);
}

.highlight-item:hover {
    transform: translateX(5px);
    background: rgba(255, 255, 255, 0.8);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

[data-theme="dark"] .highlight-item:hover {
    background: rgba(26, 26, 26, 0.8);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.highlight-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    color: var(--accent-secondary);
}

.highlight-text {
    font-size: 14px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
}

.features-sidebar-actions {
    display: flex;
    flex-direction: column;
    gap: 15px;
    flex-shrink: 0;
}

.features-action-btn {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 30px;
    border-radius: 12px;
    font-size: 18px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.features-action-primary {
    background: linear-gradient(135deg, var(--accent-secondary), #60a5fa);
    color: #ffffff;
    box-shadow: 0 6px 24px rgba(59, 130, 246, 0.4);
}

.features-action-primary::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 1s cubic-bezier(0.25, 0.46, 0.45, 0.94), 
                height 1s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.features-action-primary:hover::before {
    width: max(600px, 150%);
    height: max(600px, 150%);
}

.features-action-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 40px rgba(59, 130, 246, 0.6);
}

.features-action-btn svg {
    transition: transform 0.3s ease;
}

.features-action-btn:hover svg {
    transform: translateX(5px);
}

/* 右侧网格容器 */
.features-grid-container {
    flex: 1;
    display: flex;
    align-items: flex-start;
    overflow: hidden;
    max-height: calc(100vh - 100px);
}

.features-grid-wrapper {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    column-gap: 30px;
    row-gap: 0px;
    width: 100%;
    max-height: 100%;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 30px 20px;
    padding-right: 10px;
    align-items: start;
}

/* 创建叠放效果：每个卡片向上偏移以覆盖上方卡片，创建视觉层次 */
.features-grid-wrapper .feature-grid-item {
    margin-top: 0;
    margin-bottom: -250px;
}

/* 自定义滚动条样式 */
.features-grid-wrapper::-webkit-scrollbar {
    width: 8px;
}

.features-grid-wrapper::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.05);
    border-radius: 4px;
}

.features-grid-wrapper::-webkit-scrollbar-thumb {
    background: var(--accent-secondary);
    border-radius: 4px;
    transition: background 0.3s ease;
}

.features-grid-wrapper::-webkit-scrollbar-thumb:hover {
    background: #60a5fa;
}

[data-theme="dark"] .features-grid-wrapper::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] .features-grid-wrapper::-webkit-scrollbar-thumb {
    background: var(--accent-secondary);
}

[data-theme="dark"] .features-grid-wrapper::-webkit-scrollbar-thumb:hover {
    background: #60a5fa;
}

.feature-grid-item {
    position: relative;
    aspect-ratio: 1;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    border: 2px solid rgba(255, 255, 255, 0.9);
    border-radius: 20px;
    padding: 30px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08),
                0 2px 8px rgba(0, 0, 0, 0.06);
    z-index: 1;
}

[data-theme="dark"] .feature-grid-item {
    background: rgba(26, 26, 26, 0.8);
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4),
                0 2px 8px rgba(0, 0, 0, 0.3);
}

.feature-grid-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, 
        rgba(59, 130, 246, 0) 0%, 
        rgba(59, 130, 246, 0.1) 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.feature-grid-item:hover::before {
    opacity: 1;
}

.feature-grid-item:hover {
    transform: translateY(-8px) scale(1.02);
    border-color: var(--accent-secondary);
    box-shadow: 0 20px 60px rgba(59, 130, 246, 0.3),
                0 8px 24px rgba(0, 0, 0, 0.1);
    z-index: 10;
}

[data-theme="dark"] .feature-grid-item:hover {
    box-shadow: 0 20px 60px rgba(59, 130, 246, 0.5),
                0 8px 24px rgba(0, 0, 0, 0.4);
    z-index: 10;
}

/* 卡片内容容器 */
.feature-grid-content {
    display: flex;
    flex-direction: column;
    gap: 12px;
    position: relative;
    z-index: 2;
    flex: 1;
}

/* 编号和标题的容器 */
.feature-grid-header {
    display: flex;
    align-items: baseline;
    gap: 10px;
    flex-wrap: wrap;
}

.feature-grid-number {
    font-size: 24px;
    font-weight: 900;
    color: var(--text-tertiary);
    line-height: 1;
    opacity: 0.6;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.feature-grid-item:hover .feature-grid-number {
    color: var(--accent-secondary);
    opacity: 1;
}

.feature-grid-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
    line-height: 1.3;
    transition: all 0.3s ease;
    flex: 1;
    word-break: break-word;
}

.feature-grid-item:hover .feature-grid-title {
    color: var(--accent-secondary);
}

/* 内容描述预览 */
.feature-grid-description {
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-secondary);
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: color 0.3s ease;
    opacity: 0.85;
}

.feature-grid-item:hover .feature-grid-description {
    color: var(--text-primary);
    opacity: 1;
}

.feature-grid-arrow {
    align-self: flex-end;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(59, 130, 246, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-secondary);
    transition: all 0.3s ease;
    position: relative;
    z-index: 2;
}

.feature-grid-item:hover .feature-grid-arrow {
    background: var(--accent-secondary);
    color: #ffffff;
    transform: rotate(45deg);
}

/* 特性页面亮色模式文字适配 */
:root .features-sidebar-title {
    color: #1e3a5f;
}

:root .features-sidebar-subtitle {
    color: #475569;
}

:root .features-sidebar-description > p {
    color: #64748b;
}

:root .highlight-text {
    color: #334155;
}

:root .features-action-secondary {
    background: rgba(30, 58, 95, 0.1);
    border-color: rgba(30, 58, 95, 0.3);
    color: #1e3a5f;
}

:root .features-action-secondary:hover {
    background: rgba(30, 58, 95, 0.2);
}

/* 特性页面暗色模式 */
[data-theme="dark"] .features-sidebar-title {
    color: rgba(255, 255, 255, 0.95);
}

[data-theme="dark"] .features-sidebar-subtitle {
    color: rgba(255, 255, 255, 0.75);
}

[data-theme="dark"] .features-sidebar-description > p {
    color: rgba(255, 255, 255, 0.7);
}

[data-theme="dark"] .highlight-text {
    color: rgba(255, 255, 255, 0.9);
}

[data-theme="dark"] .features-action-secondary {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.3);
    color: #ffffff;
}

/* 响应式设计 */
@media (max-width: 1400px) {
    .features-fullscreen-container {
        padding: 0 60px;
    }

    .features-sidebar {
        flex: 0 0 320px;
        padding-right: 40px;
    }

    .features-sidebar-title {
        font-size: 60px;
    }

    .features-grid-wrapper {
        grid-template-columns: repeat(3, 1fr);
        column-gap: 25px;
        row-gap: 0px;
        padding: 25px 15px;
    }

    .features-grid-wrapper .feature-grid-item {
        margin-bottom: -230px;
    }
}

@media (max-width: 1024px) {
    .features-fullscreen-container {
        flex-direction: column;
        padding: 40px;
    }

    .features-sidebar {
        flex: 0 0 auto;
        padding-right: 0;
        padding-bottom: 30px;
    }

    .features-sidebar-title {
        font-size: 48px;
    }

    .features-sidebar-subtitle,
    .features-sidebar-actions {
        display: none;
    }

    .features-grid-container {
        flex: 1;
    }

    .features-grid-wrapper {
        grid-template-columns: repeat(3, 1fr);
        column-gap: 20px;
        row-gap: 0px;
        padding: 20px 15px;
    }

    .features-grid-wrapper .feature-grid-item {
        margin-bottom: -210px;
    }

    .feature-grid-item {
        padding: 20px;
    }

    .feature-grid-number {
        font-size: 20px;
    }

    .feature-grid-title {
        font-size: 15px;
    }

    .feature-grid-description {
        font-size: 13px;
        -webkit-line-clamp: 2;
    }
}

@media (max-width: 768px) {
    .features-fullscreen-container {
        padding: 8px 16px 20px;
        min-height: auto;
        margin-top: 0;
    }
    
    .features-sidebar {
        padding-top: 4px !important;
    }
    
    .features-sidebar-badge {
        margin-bottom: 8px;
    }

    .features-sidebar-title {
        font-size: 32px;
        margin-bottom: 12px;
    }
    
    .features-sidebar-subtitle {
        font-size: 14px;
        margin-bottom: 16px;
    }
    
    .features-sidebar-description {
        margin-bottom: 20px;
    }
    
    .features-sidebar-description > p {
        font-size: 14px;
        line-height: 1.6;
        margin-bottom: 16px;
    }
    
    .features-sidebar-highlights {
        gap: 10px;
        margin-bottom: 20px;
    }
    
    .highlight-item {
        padding: 10px 14px;
        font-size: 13px;
    }
    
    .highlight-icon {
        width: 18px;
        height: 18px;
        flex-shrink: 0;
    }
    
    .features-sidebar-actions {
        margin-top: 20px;
    }

    .features-grid-wrapper {
        grid-template-columns: repeat(2, 1fr);
        column-gap: 12px;
        row-gap: 12px;
        padding: 0;
        margin-bottom: 0;
    }

    .features-grid-wrapper .feature-grid-item {
        margin-bottom: 0;
    }

    .feature-grid-item {
        padding: 16px 12px;
        margin-bottom: 0;
        aspect-ratio: 1 / 0.9;
    }

    .feature-grid-number {
        font-size: 18px;
    }

    .feature-grid-title {
        font-size: 15px;
        margin-bottom: 6px;
        line-height: 1.3;
    }

    .feature-grid-description {
        font-size: 13px;
        line-height: 1.5;
        -webkit-line-clamp: 3;
        display: -webkit-box;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .feature-grid-arrow {
        width: 24px;
        height: 24px;
    }
}

@media (max-width: 480px) {
    .features-fullscreen-container {
        padding: 4px 12px 16px;
    }
    
    .features-sidebar {
        padding: 2px 16px 8px !important;
    }
    
    .features-sidebar-title {
        font-size: 28px;
    }
    
    .features-sidebar-subtitle {
        font-size: 13px;
    }
    
    .features-sidebar-description > p {
        font-size: 13px;
    }
    
    .highlight-item {
        padding: 8px 12px;
        font-size: 12px;
    }
    
    .features-grid-container {
        padding: 8px 16px 16px !important;
    }
    
    .features-grid-wrapper {
        column-gap: 10px;
        row-gap: 10px;
    }

    .feature-grid-item {
        padding: 14px 10px;
        aspect-ratio: 1 / 0.95;
    }

    .feature-grid-number {
        font-size: 16px;
    }

    .feature-grid-title {
        font-size: 14px;
        margin-bottom: 5px;
    }

    .feature-grid-description {
        font-size: 12px;
        line-height: 1.4;
        -webkit-line-clamp: 3;
    }
    
    .feature-grid-arrow {
        width: 18px;
        height: 18px;
    }
    
    .download-fullscreen-container {
        padding: 4px 12px 16px;
    }
    
    .download-sidebar {
        padding: 2px 16px 8px !important;
    }
    
    .download-sidebar-main-title {
        font-size: 20px;
    }
    
    .download-sidebar-subtitle {
        font-size: 10px;
    }
    
    .download-version-number {
        font-size: 22px;
    }
    
    .download-version-name {
        font-size: 10px;
    }
    
    .download-version-description {
        font-size: 9px;
    }
    
    .download-meta-item {
        padding: 6px;
    }
    
    .meta-icon {
        width: 14px;
        height: 14px;
    }
    
    .download-action-btn {
        padding: 8px 12px;
        font-size: 12px;
    }

    .download-btn-icon {
        width: 16px;
        height: 16px;
    }

    .download-btn-title {
        font-size: 12px;
    }

    .download-btn-subtitle {
        font-size: 9px;
    }
    
    .download-content {
        padding: 8px 16px 16px !important;
    }
    
    .download-notes-card {
        padding: 16px 12px;
    }
    
    .download-notes-header h3 {
        font-size: 18px;
    }
    
    .download-notes-content {
        font-size: 13px;
    }
    
    .subscription-fullscreen-container {
        padding: 6px 16px 16px;
    }

    .subscription-sidebar {
        padding: 4px 16px 4px !important;
        margin-bottom: 0 !important;
    }

    .subscription-sidebar-badge {
        font-size: 9px !important;
        padding: 3px 10px !important;
        margin-bottom: 4px !important;
    }

    .subscription-sidebar-title {
        font-size: 22px !important;
        margin-bottom: 2px !important;
    }

    .subscription-sidebar-subtitle {
        font-size: 11px !important;
        margin-bottom: 3px !important;
    }

    /* 隐藏冗余的描述文字和特性列表 */
    .subscription-sidebar-description {
        display: none !important;
    }

    .subscription-sidebar-highlights {
        display: none !important;
    }

    .subscription-sidebar-actions {
        margin-top: 10px !important;
        margin-bottom: 6px !important;
    }

    .subscription-action-btn {
        padding: 10px 16px !important;
        font-size: 13px !important;
    }

    .subscription-content {
        padding: 0 16px 16px !important;
        overflow-y: auto !important;
    }

    /* 隐藏"请在应用内购买"提示 */
    .subscription-content-header {
        display: none !important;
    }

    .subscription-cards-wrapper {
        gap: 8px !important;
        grid-template-columns: repeat(2, 1fr) !important;
        overflow-y: auto !important;
        max-height: calc(100vh - 160px) !important;
    }

    .subscription-card {
        padding: 10px 8px !important;
    }

    .subscription-card-header {
        margin-bottom: 5px !important;
        padding-bottom: 4px !important;
    }

    .subscription-plan-name {
        font-size: 13px !important;
        margin-bottom: 2px !important;
        font-weight: 700 !important;
    }

    .subscription-plan-period {
        font-size: 9px !important;
    }

    .subscription-price {
        padding: 4px 2px !important;
        margin-bottom: 5px !important;
    }

    .subscription-price-number {
        font-size: 22px !important;
        font-weight: 900 !important;
    }

    .subscription-price-unit {
        font-size: 10px !important;
    }

    .subscription-features {
        gap: 2px !important;
        margin-bottom: 5px !important;
    }

    .subscription-feature-item {
        font-size: 9px !important;
        padding: 1px 0 !important;
        line-height: 1.3 !important;
    }

    .subscription-feature-icon {
        width: 10px !important;
        height: 10px !important;
    }

    .subscription-btn {
        padding: 8px 12px !important;
        font-size: 11px !important;
        font-weight: 600 !important;
    }
}

/* ==================== 图片查看器模态框 ==================== */
.gallery-modal-content {
    background: var(--bg-primary);
    border-radius: 16px;
    width: 1200px;
    max-width: 90%;
    height: 800px;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    position: relative;
}

/* 关闭按钮 */
.gallery-modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    background: rgba(0, 0, 0, 0.5);
    color: #ffffff;
    font-size: 28px;
    line-height: 1;
    cursor: pointer;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.gallery-modal-close:hover {
    background: rgba(59, 130, 246, 0.9);
    transform: rotate(90deg);
}

.gallery-body {
    padding: 40px 32px 32px;
    display: flex;
    flex-direction: column;
    gap: 24px;
    overflow-y: auto;
    height: 100%;
}

.gallery-main {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 550px;
    flex-shrink: 0;
}

.gallery-main-image {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1; /* 确保图片在按钮下方 */
    pointer-events: none; /* 图片不阻挡按钮点击 */
}

.gallery-main-image img {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    pointer-events: none; /* 图片不阻挡按钮点击 */
}

.gallery-image-counter {
    position: absolute;
    bottom: 16px;
    right: 16px;
    background: rgba(0, 0, 0, 0.7);
    color: #ffffff;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    backdrop-filter: blur(8px);
}

.gallery-nav-btn {
    position: absolute;
    width: 56px;
    height: 56px;
    background: rgba(255, 255, 255, 0.9);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    color: var(--text-primary);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 100; /* 确保按钮在最上层 */
    pointer-events: auto; /* 确保可以点击 */
}

[data-theme="dark"] .gallery-nav-btn {
    background: rgba(50, 50, 50, 0.9);
    color: #ffffff;
}

.gallery-nav-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
}

.gallery-nav-btn:active {
    transform: scale(0.95);
}

.gallery-nav-prev {
    left: 16px;
}

.gallery-nav-next {
    right: 16px;
}

.gallery-thumbnails {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 16px;
    height: 150px;
    overflow-y: auto;
    padding: 8px;
    flex-shrink: 0;
}

.gallery-thumbnail {
    position: relative;
    width: 100%;
    padding-bottom: 75%;
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    border: 3px solid transparent;
    transition: all 0.3s ease;
}

.gallery-thumbnail:hover {
    transform: scale(1.05);
    border-color: var(--accent-secondary);
}

.gallery-thumbnail.active {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 2px var(--accent-primary);
}

.gallery-thumbnail img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

@media (max-width: 768px) {
    .gallery-modal-content {
        width: 95%;
        height: 600px;
        max-height: 90vh;
    }
    
    .gallery-modal-close {
        top: 12px;
        right: 12px;
        width: 36px;
        height: 36px;
        font-size: 24px;
    }
    
    .gallery-body {
        padding: 32px 16px 16px;
    }
    
    .gallery-main {
        height: 350px;
    }
    
    .gallery-main-image img {
        border-radius: 8px;
    }
    
    .gallery-nav-btn {
        width: 44px;
        height: 44px;
    }
    
    .gallery-thumbnails {
        grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
        gap: 12px;
    }
}

/* ==================== 固定右下角二维码组件 ==================== */
.fixed-qrcode-container {
    position: fixed;
    right: 24px;
    bottom: 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 1000;
}

.qrcode-item {
    position: relative;
    cursor: pointer;
}

.qrcode-thumb {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    overflow: hidden;
    background: linear-gradient(135deg, #3b82f6, #60a5fa);
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.35);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    color: #ffffff;
}

.qrcode-thumb-icon {
    width: 24px;
    height: 24px;
    fill: currentColor;
}

.qrcode-thumb-label {
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.qrcode-thumb:hover {
    transform: scale(1.1) translateY(-2px);
    box-shadow: 0 8px 28px rgba(59, 130, 246, 0.5);
}

/* 展开的二维码 */
.qrcode-expanded {
    position: absolute;
    right: 64px;
    bottom: 0;
    width: 200px;
    background: rgba(255, 255, 255, 0.98);
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    padding: 16px;
    opacity: 0;
    visibility: hidden;
    transform: translateX(20px) scale(0.9);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
}

.qrcode-item.active .qrcode-expanded {
    opacity: 1;
    visibility: visible;
    transform: translateX(0) scale(1);
    pointer-events: auto;
}

.qrcode-header {
    text-align: center;
    font-size: 14px;
    font-weight: 600;
    color: #1e3a5f;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid rgba(59, 130, 246, 0.2);
}

.qrcode-expanded img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
}

/* 暗色主题适配 */
[data-theme="dark"] .qrcode-thumb {
    background: linear-gradient(135deg, #2563eb, #3b82f6);
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.4);
}

[data-theme="dark"] .qrcode-thumb:hover {
    box-shadow: 0 8px 28px rgba(96, 165, 250, 0.5);
}

[data-theme="dark"] .qrcode-expanded {
    background: rgba(30, 41, 59, 0.98);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .qrcode-header {
    color: #e2e8f0;
    border-bottom-color: rgba(96, 165, 250, 0.3);
}

/* 移动端隐藏 */
@media (max-width: 768px) {
    .fixed-qrcode-container {
        display: none;
    }
}