/* 
 * 黑料视频网站样式表
 * 设计风格：深色主题 + 金色点缀 + 现代渐变
 * 移动端优先响应式设计
 */

/* CSS变量定义 */
:root {
    --primary-color: #6B21A8;
    --primary-light: #9333EA;
    --primary-dark: #4C1D95;
    --accent-color: #F59E0B;
    --accent-light: #FBBF24;
    --bg-dark: #0F0F1A;
    --bg-card: #1A1A2E;
    --bg-card-hover: #252542;
    --text-primary: #FFFFFF;
    --text-secondary: #A1A1AA;
    --text-muted: #71717A;
    --border-color: #3F3F5A;
    --success-color: #10B981;
    --warning-color: #F59E0B;
    --danger-color: #EF4444;
    --gradient-primary: linear-gradient(135deg, #6B21A8 0%, #9333EA 50%, #C026D3 100%);
    --gradient-accent: linear-gradient(135deg, #F59E0B 0%, #FBBF24 100%);
    --gradient-dark: linear-gradient(180deg, #0F0F1A 0%, #1A1A2E 100%);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(147, 51, 234, 0.3);
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 9999px;
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* 重置样式 */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.7;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 链接样式 */
a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--accent-light);
}

/* 图片样式 */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* 列表样式 */
ul, ol {
    list-style: none;
}

/* 按钮重置 */
button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* 容器 */
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 16px;
}

@media (min-width: 768px) {
    .container {
        padding: 0 24px;
    }
}

@media (min-width: 1200px) {
    .container {
        padding: 0 32px;
    }
}

/* 头部导航 */
.site-header {
    background: rgba(15, 15, 26, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: 12px 0;
    position: relative;
    z-index: 100;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.site-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.site-logo img {
    height: 40px;
    width: auto;
}

.site-logo span {
    font-size: 1.25rem;
    font-weight: 700;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 主导航 */
.main-nav {
    display: none;
}

.main-nav.active {
    display: flex;
    flex-direction: column;
    width: 100%;
    gap: 8px;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
    margin-top: 12px;
}

.main-nav a {
    color: var(--text-secondary);
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 500;
    transition: all var(--transition-fast);
    background: var(--bg-card);
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--text-primary);
    background: var(--bg-card-hover);
}

/* 移动端菜单按钮 */
.menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    background: var(--bg-card);
    border-radius: var(--radius-sm);
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-fast);
}

@media (min-width: 992px) {
    .menu-toggle {
        display: none;
    }
    
    .main-nav {
        display: flex;
        flex-direction: row;
        width: auto;
        gap: 4px;
        padding-top: 0;
        border-top: none;
        margin-top: 0;
    }
    
    .main-nav a {
        background: transparent;
        padding: 8px 14px;
    }
}

/* Hero区域 */
.hero-section {
    position: relative;
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 60px 0;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.3;
}

.hero-bg::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(15, 15, 26, 0.7) 0%, rgba(15, 15, 26, 0.9) 100%);
}

.hero-content {
    text-align: center;
    max-width: 800px;
    padding: 0 20px;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    background: var(--gradient-primary);
    color: var(--text-primary);
    padding: 6px 16px;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 20px;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.8; }
}

.hero-title {
    font-size: 2rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 16px;
    background: linear-gradient(135deg, #FFFFFF 0%, #E5E5E5 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

@media (min-width: 768px) {
    .hero-title {
        font-size: 3rem;
    }
}

.hero-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 28px;
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: center;
}

@media (min-width: 480px) {
    .hero-actions {
        flex-direction: row;
        justify-content: center;
    }
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    transition: all var(--transition-normal);
    cursor: pointer;
    text-decoration: none;
    border: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--text-primary);
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(147, 51, 234, 0.5);
    color: var(--text-primary);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--accent-color);
}

.btn-secondary:hover {
    background: var(--accent-color);
    color: var(--bg-dark);
}

.btn-accent {
    background: var(--gradient-accent);
    color: var(--bg-dark);
}

.btn-accent:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 20px rgba(245, 158, 11, 0.4);
}

/* 区块标题 */
.section-header {
    text-align: center;
    margin-bottom: 40px;
}

.section-tag {
    display: inline-block;
    background: var(--bg-card);
    color: var(--accent-color);
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 12px;
    border: 1px solid var(--border-color);
}

.section-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

@media (min-width: 768px) {
    .section-title {
        font-size: 2.25rem;
    }
}

.section-desc {
    font-size: 1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* 内容区块 */
.content-section {
    padding: 60px 0;
}

.content-section:nth-child(even) {
    background: var(--bg-card);
}

/* 视频卡片网格 */
.video-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

@media (min-width: 576px) {
    .video-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 992px) {
    .video-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* 视频卡片 */
.video-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
}

.video-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.video-thumb {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
}

.video-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.video-card:hover .video-thumb img {
    transform: scale(1.05);
}

.video-play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: rgba(147, 51, 234, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-glow);
}

.video-play-btn::after {
    content: '';
    width: 0;
    height: 0;
    border-left: 18px solid var(--text-primary);
    border-top: 12px solid transparent;
    border-bottom: 12px solid transparent;
    margin-left: 4px;
}

.video-card:hover .video-play-btn {
    background: var(--accent-color);
    transform: translate(-50%, -50%) scale(1.1);
}

.video-duration {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background: rgba(0, 0, 0, 0.8);
    color: var(--text-primary);
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 500;
}

.video-info {
    padding: 16px;
}

.video-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.video-rating {
    display: flex;
    align-items: center;
    gap: 4px;
    color: var(--accent-color);
}

.video-rating .stars {
    letter-spacing: 2px;
}

/* 评分样式 */
.rating-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: var(--bg-card-hover);
    padding: 4px 10px;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    color: var(--accent-color);
    font-weight: 600;
}

/* 新闻模块 */
.news-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

@media (min-width: 768px) {
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.news-card {
    display: flex;
    flex-direction: column;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

@media (min-width: 576px) {
    .news-card {
        flex-direction: row;
    }
}

.news-card:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-md);
}

.news-image {
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
}

@media (min-width: 576px) {
    .news-image {
        width: 200px;
        min-width: 200px;
        aspect-ratio: auto;
    }
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.news-content {
    padding: 16px;
    flex: 1;
}

.news-tag {
    display: inline-block;
    background: var(--primary-dark);
    color: var(--text-primary);
    padding: 3px 10px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.news-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.news-excerpt {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 12px;
}

.news-date {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* 评论模块 */
.reviews-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

@media (min-width: 576px) {
    .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 992px) {
    .reviews-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.review-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 24px;
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.review-card:hover {
    border-color: var(--accent-color);
    box-shadow: var(--shadow-md);
}

.review-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.review-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.review-user-info h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.review-user-info span {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.review-rating {
    color: var(--accent-color);
    font-size: 1rem;
    letter-spacing: 2px;
    margin-bottom: 12px;
}

.review-content {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 12px;
}

.review-date {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* FAQ模块 */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    margin-bottom: 12px;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: 20px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    text-align: left;
    background: transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.faq-question:hover {
    background: var(--bg-card-hover);
}

.faq-icon {
    width: 24px;
    height: 24px;
    position: relative;
    flex-shrink: 0;
}

.faq-icon::before,
.faq-icon::after {
    content: '';
    position: absolute;
    background: var(--accent-color);
    transition: transform var(--transition-fast);
}

.faq-icon::before {
    width: 14px;
    height: 2px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.faq-icon::after {
    width: 2px;
    height: 14px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.faq-item.active .faq-icon::after {
    transform: translate(-50%, -50%) rotate(90deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer-inner {
    padding: 0 24px 20px;
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* 授权徽章区域 */
.certification-section {
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--primary-dark) 100%);
    padding: 60px 0;
}

.cert-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 30px;
    text-align: center;
}

@media (min-width: 768px) {
    .cert-content {
        flex-direction: row;
        text-align: left;
    }
}

.cert-badge {
    width: 150px;
    height: 150px;
    flex-shrink: 0;
}

.cert-badge img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.cert-info h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.cert-info p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 16px;
}

.cert-details {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

.cert-item {
    background: rgba(0, 0, 0, 0.3);
    padding: 12px 20px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.cert-item strong {
    display: block;
    color: var(--accent-color);
    font-size: 0.85rem;
    margin-bottom: 4px;
}

.cert-item span {
    color: var(--text-primary);
    font-size: 0.95rem;
}

/* 关于我们 */
.about-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
}

@media (min-width: 992px) {
    .about-content {
        grid-template-columns: 1fr 1fr;
    }
}

.about-text h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.about-text p {
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: 16px;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

@media (min-width: 576px) {
    .about-features {
        grid-template-columns: repeat(2, 1fr);
    }
}

.feature-item {
    background: var(--bg-card);
    padding: 20px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.feature-item:hover {
    border-color: var(--primary-light);
    transform: translateY(-2px);
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
    font-size: 1.5rem;
}

.feature-item h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.feature-item p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 客户支持 */
.support-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

@media (min-width: 576px) {
    .support-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 992px) {
    .support-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.support-card {
    background: var(--bg-card);
    padding: 24px;
    border-radius: var(--radius-md);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.support-card:hover {
    border-color: var(--accent-color);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.support-icon {
    width: 56px;
    height: 56px;
    background: var(--gradient-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    font-size: 1.5rem;
}

.support-card h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.support-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* 面包屑导航 */
.breadcrumb {
    padding: 16px 0;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
}

.breadcrumb-list {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 0.9rem;
}

.breadcrumb-list li {
    display: flex;
    align-items: center;
    gap: 8px;
}

.breadcrumb-list li::after {
    content: '/';
    color: var(--text-muted);
}

.breadcrumb-list li:last-child::after {
    display: none;
}

.breadcrumb-list a {
    color: var(--text-secondary);
}

.breadcrumb-list a:hover {
    color: var(--accent-color);
}

.breadcrumb-list li:last-child {
    color: var(--text-primary);
}

/* 页脚 */
.site-footer {
    background: var(--bg-card);
    border-top: 1px solid var(--border-color);
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

@media (min-width: 576px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 992px) {
    .footer-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.footer-col h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--accent-color);
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul a {
    color: var(--text-secondary);
    font-size: 0.95rem;
    transition: all var(--transition-fast);
}

.footer-col ul a:hover {
    color: var(--accent-color);
    padding-left: 4px;
}

.footer-col p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

.footer-social {
    display: flex;
    gap: 12px;
    margin-top: 16px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: var(--bg-card-hover);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.footer-social a:hover {
    background: var(--accent-color);
    color: var(--bg-dark);
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 12px;
}

.footer-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.footer-links a:hover {
    color: var(--accent-color);
}

/* 视频播放器模块 */
.video-player-section {
    background: var(--bg-dark);
    padding: 40px 0;
}

.video-player-wrapper {
    position: relative;
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    aspect-ratio: 16 / 9;
    background: #000;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.video-player-wrapper video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-player-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.5);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.video-player-overlay:hover {
    background: rgba(0, 0, 0, 0.3);
}

.video-player-overlay .play-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-glow);
    transition: all var(--transition-normal);
}

.video-player-overlay:hover .play-icon {
    transform: scale(1.1);
}

.video-player-overlay .play-icon::after {
    content: '';
    width: 0;
    height: 0;
    border-left: 24px solid var(--text-primary);
    border-top: 16px solid transparent;
    border-bottom: 16px solid transparent;
    margin-left: 6px;
}

/* APP下载页面 */
.app-download-section {
    background: var(--gradient-primary);
    padding: 80px 0;
}

.app-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 40px;
    text-align: center;
}

@media (min-width: 768px) {
    .app-content {
        flex-direction: row;
        text-align: left;
    }
}

.app-info {
    flex: 1;
}

.app-info h2 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.app-info p {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.8;
    margin-bottom: 24px;
}

.app-features-list {
    margin-bottom: 30px;
}

.app-features-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    color: rgba(255, 255, 255, 0.9);
}

.app-features-list li::before {
    content: '✓';
    width: 24px;
    height: 24px;
    background: var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    color: var(--bg-dark);
    font-weight: 700;
}

.download-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

@media (min-width: 480px) {
    .download-buttons {
        flex-direction: row;
    }
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(0, 0, 0, 0.3);
    padding: 14px 24px;
    border-radius: var(--radius-md);
    color: var(--text-primary);
    transition: all var(--transition-normal);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.download-btn:hover {
    background: rgba(0, 0, 0, 0.5);
    transform: translateY(-2px);
    color: var(--text-primary);
}

.download-btn .icon {
    font-size: 1.5rem;
}

.download-btn .text {
    text-align: left;
}

.download-btn .text small {
    display: block;
    font-size: 0.75rem;
    opacity: 0.8;
}

.download-btn .text strong {
    font-size: 1rem;
}

.app-image {
    flex: 1;
    max-width: 400px;
}

.app-image img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

/* 内页样式 */
.page-header {
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--primary-dark) 100%);
    padding: 60px 0;
    text-align: center;
}

.page-header h1 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 12px;
}

@media (min-width: 768px) {
    .page-header h1 {
        font-size: 2.5rem;
    }
}

.page-header p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.page-content {
    padding: 60px 0;
}

.article-content {
    max-width: 800px;
    margin: 0 auto;
}

.article-content h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 32px 0 16px;
}

.article-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 24px 0 12px;
}

.article-content p {
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: 16px;
}

.article-content ul {
    margin: 16px 0;
    padding-left: 24px;
}

.article-content ul li {
    color: var(--text-secondary);
    margin-bottom: 8px;
    position: relative;
    padding-left: 16px;
}

.article-content ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 6px;
    height: 6px;
    background: var(--accent-color);
    border-radius: 50%;
}

.article-content img {
    width: 100%;
    border-radius: var(--radius-md);
    margin: 24px 0;
}

/* 作者信息 */
.author-box {
    display: flex;
    align-items: center;
    gap: 16px;
    background: var(--bg-card);
    padding: 20px;
    border-radius: var(--radius-md);
    margin: 40px 0;
    border: 1px solid var(--border-color);
}

.author-avatar {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    flex-shrink: 0;
}

.author-info h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.author-info p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin: 0;
}

/* 响应式工具类 */
.hidden-mobile {
    display: none;
}

@media (min-width: 768px) {
    .hidden-mobile {
        display: block;
    }
}

.hidden-desktop {
    display: block;
}

@media (min-width: 768px) {
    .hidden-desktop {
        display: none;
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fadeInUp {
    animation: fadeInUp 0.6s ease forwards;
}

/* 懒加载图片占位 */
img[loading="lazy"] {
    background: var(--bg-card);
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-light);
}

/* 选中文本样式 */
::selection {
    background: var(--primary-light);
    color: var(--text-primary);
}

/* 打印样式 */
@media print {
    .site-header,
    .site-footer,
    .menu-toggle {
        display: none;
    }
    
    body {
        background: #fff;
        color: #000;
    }
}