/* 91视频在线观看18 - 主样式表 */
:root {
    --primary-color: #ff2d55;
    --primary-gradient: linear-gradient(135deg, #ff2d55 0%, #ff6b8a 100%);
    --secondary-gradient: linear-gradient(180deg, #1a1a2e 0%, #16213e 100%);
    --accent-color: #ff9500;
    --text-primary: #ffffff;
    --text-secondary: rgba(255,255,255,0.7);
    --bg-dark: #0d0d1a;
    --bg-card: rgba(255,255,255,0.05);
    --border-color: rgba(255,255,255,0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--primary-color);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部导航 */
.header {
    background: rgba(13,13,26,0.95);
    backdrop-filter: blur(20px);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 20px;
    max-width: 1400px;
    margin: 0 auto;
}

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

.logo-icon {
    width: 45px;
    height: 45px;
    background: var(--primary-gradient);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 18px;
    color: white;
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.main-nav {
    display: flex;
    gap: 30px;
}

.main-nav a {
    font-size: 15px;
    font-weight: 500;
    padding: 8px 0;
    position: relative;
}

.main-nav a.active::after,
.main-nav a:hover::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-color);
}

/* 搜索框 */
.search-box {
    display: flex;
    align-items: center;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 25px;
    padding: 8px 15px;
    width: 280px;
}

.search-box input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-size: 14px;
}

.search-box input::placeholder {
    color: var(--text-secondary);
}

.search-box button {
    background: var(--primary-gradient);
    border: none;
    border-radius: 50%;
    width: 32px;
    height: 32px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 14px;
}

/* Hero区域 */
.hero {
    padding: 140px 20px 80px;
    background: var(--secondary-gradient);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="none" stroke="rgba(255,45,85,0.1)" stroke-width="0.5"/></svg>');
    background-size: 200px;
    opacity: 0.5;
}

.hero-inner {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content h1 {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-content h2 {
    font-size: 28px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.hero-content p {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 30px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    margin-bottom: 40px;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 15px 30px;
    background: var(--primary-gradient);
    color: white;
    border-radius: 30px;
    font-weight: 600;
    font-size: 16px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(255,45,85,0.3);
    color: white;
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 15px 30px;
    background: transparent;
    color: white;
    border: 2px solid var(--border-color);
    border-radius: 30px;
    font-weight: 600;
    font-size: 16px;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.hero-stats {
    display: flex;
    gap: 40px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 36px;
    font-weight: 800;
    color: var(--primary-color);
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
}

.hero-image {
    position: relative;
}

.hero-image img {
    width: 100%;
    border-radius: 20px;
    box-shadow: 0 30px 60px rgba(0,0,0,0.3);
}

/* 视频卡片网格 */
.video-section {
    padding: 80px 20px;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.section-header h3 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 15px;
}

.section-header p {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
    max-width: 1400px;
    margin: 0 auto;
}

.video-card {
    background: var(--bg-card);
    border-radius: 16px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid var(--border-color);
}

.video-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(255,45,85,0.15);
}

.video-thumbnail {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
    background: linear-gradient(135deg, #1a1a2e 0%, #2d2d44 100%);
}

.video-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.video-play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    width: 60px;
    height: 60px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.3s ease;
}

.video-card:hover .video-play-btn {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
}

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

.video-duration {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: rgba(0,0,0,0.8);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
}

.video-info {
    padding: 15px;
}

.video-info h4 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 10px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-meta {
    display: flex;
    gap: 15px;
    font-size: 13px;
    color: var(--text-secondary);
}

.video-meta span {
    display: flex;
    align-items: center;
    gap: 5px;
}

/* 分类标签 */
.category-tabs {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.category-tab {
    padding: 10px 25px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 25px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.category-tab:hover,
.category-tab.active {
    background: var(--primary-gradient);
    border-color: transparent;
    color: white;
}

/* 特色功能区 */
.feature-section {
    padding: 80px 20px;
    background: var(--secondary-gradient);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    max-width: 1400px;
    margin: 0 auto;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: var(--primary-gradient);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    margin: 0 auto 20px;
}

.feature-card h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 专家展示 */
.expert-section {
    padding: 80px 20px;
}

.expert-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    max-width: 1400px;
    margin: 0 auto;
}

.expert-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease;
}

.expert-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(255,45,85,0.1);
}

.expert-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    overflow: hidden;
    margin: 0 auto 20px;
    border: 3px solid var(--primary-color);
}

.expert-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.expert-card h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.expert-card .title {
    font-size: 14px;
    color: var(--primary-color);
    margin-bottom: 12px;
}

.expert-card p {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 15px;
}

.expert-badge {
    display: inline-block;
    padding: 5px 15px;
    background: var(--primary-gradient);
    border-radius: 15px;
    font-size: 12px;
    color: white;
}

/* 用户评价 */
.review-section {
    padding: 80px 20px;
    background: var(--secondary-gradient);
}

.review-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.review-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 30px;
}

.review-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.review-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    overflow: hidden;
}

.review-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.review-user h5 {
    font-size: 15px;
    font-weight: 600;
}

.review-user span {
    font-size: 13px;
    color: var(--text-secondary);
}

.review-stars {
    color: var(--accent-color);
    margin-bottom: 12px;
}

.review-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* 社区互动区 */
.community-section {
    padding: 80px 20px;
}

.community-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.community-content h3 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.community-content p {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 25px;
    line-height: 1.8;
}

.community-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-bottom: 30px;
}

.community-feature {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 15px;
    background: var(--bg-card);
    border-radius: 10px;
    font-size: 14px;
}

.community-feature::before {
    content: '✓';
    color: var(--primary-color);
    font-weight: bold;
}

.community-image img {
    width: 100%;
    border-radius: 20px;
    box-shadow: 0 30px 60px rgba(0,0,0,0.3);
}

/* 合作品牌 */
.partner-section {
    padding: 60px 20px;
    background: var(--bg-card);
}

.partner-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 60px;
    flex-wrap: wrap;
    max-width: 1200px;
    margin: 0 auto;
}

.partner-logo {
    opacity: 0.6;
    transition: opacity 0.3s ease;
    font-size: 24px;
    font-weight: 700;
    color: var(--text-secondary);
}

.partner-logo:hover {
    opacity: 1;
}

/* 联系我们 */
.contact-section {
    padding: 80px 20px;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    max-width: 1400px;
    margin: 0 auto;
}

.contact-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 30px;
    text-align: center;
}

.contact-card h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.contact-card p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.qr-code {
    width: 120px;
    height: 120px;
    background: white;
    border-radius: 10px;
    margin: 15px auto;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    color: #333;
}

/* 页脚 */
.footer {
    background: rgba(13,13,26,0.98);
    border-top: 1px solid var(--border-color);
    padding: 60px 20px 30px;
}

.footer-inner {
    max-width: 1400px;
    margin: 0 auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 15px;
    line-height: 1.7;
}

.footer-links h5 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    font-size: 14px;
    color: var(--text-secondary);
}

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

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

.footer-bottom p {
    font-size: 13px;
    color: var(--text-secondary);
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-link {
    width: 40px;
    height: 40px;
    background: var(--bg-card);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.social-link:hover {
    background: var(--primary-gradient);
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .video-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .feature-grid,
    .expert-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .hero-inner {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero-stats {
        justify-content: center;
    }
    .community-inner {
        grid-template-columns: 1fr;
    }
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .header-inner {
        flex-wrap: wrap;
        gap: 15px;
    }
    .main-nav {
        order: 3;
        width: 100%;
        justify-content: center;
        gap: 15px;
    }
    .search-box {
        width: 100%;
        order: 2;
    }
    .hero-content h1 {
        font-size: 32px;
    }
    .video-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .review-grid {
        grid-template-columns: 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .video-grid {
        grid-template-columns: 1fr;
    }
    .feature-grid,
    .expert-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 40px;
}

.pagination button {
    width: 40px;
    height: 40px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.3s ease;
}

.pagination button:hover,
.pagination button.active {
    background: var(--primary-gradient);
    border-color: transparent;
}

/* 面包屑 */
.breadcrumb {
    padding: 20px;
    font-size: 14px;
    color: var(--text-secondary);
}

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

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

.breadcrumb span {
    margin: 0 10px;
}

/* 内页样式 */
.page-header {
    padding: 120px 20px 60px;
    background: var(--secondary-gradient);
    text-align: center;
}

.page-header h1 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.page-header p {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.page-content {
    padding: 60px 20px;
}

/* 懒加载占位 */
.lazy-load {
    background: linear-gradient(90deg, var(--bg-card) 25%, rgba(255,255,255,0.1) 50%, var(--bg-card) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* 干扰标签隐藏 */
gaddress, sup, timea, abbr, del, ecode, is, tcenter, area, ins, sub, var, maccmsbot, style, acronym, dfn, kbdd, font, smap, noscripta, ssmall, time {
    display: none !important;
    visibility: hidden !important;
    position: absolute !important;
    width: 0 !important;
    height: 0 !important;
    overflow: hidden !important;
}

/* 更新通知样式 */
.update-notice {
    background: linear-gradient(90deg, #ff2d55, #ff6b35);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    display: inline-block;
    font-size: 14px;
    margin-bottom: 20px;
    animation: pulse 2s infinite;
}

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

/* 政策页面样式 */
.content-section {
    padding: 60px 0;
}

.policy-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px;
    background: rgba(255,255,255,0.05);
    border-radius: 16px;
}

.policy-content h2 {
    color: #ff2d55;
    margin-top: 30px;
    margin-bottom: 15px;
    font-size: 1.5rem;
}

.policy-content p {
    line-height: 1.8;
    margin-bottom: 15px;
    color: #ccc;
}

.policy-content ul {
    list-style: disc;
    padding-left: 20px;
    color: #ccc;
}

.policy-content ul li {
    margin-bottom: 8px;
}