/* ============================================
   鉴黄师 精选视频社区 - 全站样式表
   品牌：鉴黄师 | 域名：do836.cn
   原创配色方案：深碳黑 + 赛道红 + 钛银灰
   ============================================ */

/* CSS变量定义 */
:root {
    --color-primary: #C8102E;
    --color-primary-dark: #9B0D23;
    --color-primary-light: #E8354D;
    --color-bg-dark: #0D0D0D;
    --color-bg-section: #141414;
    --color-bg-card: #1A1A1A;
    --color-bg-hover: #242424;
    --color-text: #E8E8E8;
    --color-text-muted: #999999;
    --color-text-light: #CCCCCC;
    --color-silver: #B0B0B0;
    --color-accent: #FF6B35;
    --color-border: #2A2A2A;
    --color-success: #28A745;
    --font-main: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    --max-width: 1200px;
    --radius: 8px;
    --shadow: 0 4px 20px rgba(0,0,0,0.4);
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-main);
    background-color: var(--color-bg-dark);
    color: var(--color-text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: var(--transition);
}

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

ul {
    list-style: none;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* ============================================
   头部导航
   ============================================ */
.header {
    background: linear-gradient(180deg, #0D0D0D 0%, #141414 100%);
    border-bottom: 2px solid var(--color-primary);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 10px;
    padding-bottom: 10px;
}

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

.logo img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
}

.logo-text {
    font-size: 28px;
    font-weight: 800;
    color: var(--color-primary);
    letter-spacing: 2px;
}

.main-nav ul {
    display: flex;
    gap: 5px;
    flex-wrap: wrap;
}

.main-nav a {
    color: var(--color-text-light);
    padding: 8px 14px;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
    transition: var(--transition);
}

.main-nav a:hover {
    background: var(--color-primary);
    color: #fff;
}

/* 搜索栏 */
.search-bar-container {
    background: var(--color-bg-section);
    padding: 10px 0;
    border-bottom: 1px solid var(--color-border);
}

.fake-search {
    display: flex;
    max-width: 600px;
    margin: 0 auto;
}

.fake-search input {
    flex: 1;
    padding: 10px 18px;
    border: 2px solid var(--color-border);
    border-right: none;
    border-radius: var(--radius) 0 0 var(--radius);
    background: var(--color-bg-card);
    color: var(--color-text);
    font-size: 14px;
    cursor: pointer;
}

.fake-search input:focus {
    border-color: var(--color-primary);
    outline: none;
}

.fake-search button {
    padding: 10px 24px;
    background: var(--color-primary);
    color: #fff;
    border: none;
    border-radius: 0 var(--radius) var(--radius) 0;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.fake-search button:hover {
    background: var(--color-primary-dark);
}

/* ============================================
   Banner区域
   ============================================ */
.banner {
    position: relative;
    overflow: hidden;
}

.banner-bg {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    min-height: 500px;
    display: flex;
    align-items: center;
}

.banner-overlay {
    background: linear-gradient(135deg, rgba(13,13,13,0.92) 0%, rgba(200,16,46,0.3) 100%);
    width: 100%;
    min-height: 500px;
    display: flex;
    align-items: center;
    padding: 60px 0;
}

.banner h1 {
    font-size: 36px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 20px;
    line-height: 1.3;
}

.banner-desc {
    font-size: 16px;
    color: var(--color-text-light);
    max-width: 700px;
    margin-bottom: 30px;
    line-height: 1.8;
}

.btn-primary, .btn-secondary {
    display: inline-block;
    padding: 14px 32px;
    border-radius: var(--radius);
    font-size: 16px;
    font-weight: 600;
    margin-right: 15px;
    margin-bottom: 10px;
    transition: var(--transition);
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(200,16,46,0.4);
}

.btn-secondary {
    background: transparent;
    color: #fff;
    border: 2px solid var(--color-silver);
}

.btn-secondary:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-2px);
}

/* ============================================
   通用Section样式
   ============================================ */
.section {
    padding: 60px 0;
}

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

.section h2 {
    font-size: 28px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 3px solid var(--color-primary);
    display: inline-block;
}

.section-desc {
    color: var(--color-text-muted);
    font-size: 15px;
    margin-bottom: 35px;
    max-width: 900px;
    line-height: 1.8;
}

/* ============================================
   视频卡片网格
   ============================================ */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

.short-video-grid {
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
}

.video-card {
    background: var(--color-bg-card);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid var(--color-border);
}

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

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

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

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

.play-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 10;
    cursor: pointer;
}

.video-card:hover .play-overlay {
    opacity: 1;
    visibility: visible;
}

.play-btn {
    width: 60px;
    height: 60px;
    background: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 24px;
    box-shadow: 0 4px 15px rgba(200,16,46,0.5);
}

.video-duration {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background: rgba(0,0,0,0.8);
    color: #fff;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
}

.video-info {
    padding: 16px;
}

.video-info h3, .video-info h4 {
    font-size: 15px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 8px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-meta {
    display: flex;
    gap: 12px;
    font-size: 12px;
    color: var(--color-text-muted);
    margin-bottom: 8px;
}

.video-tags {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.tag {
    background: rgba(200,16,46,0.15);
    color: var(--color-primary-light);
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 500;
}

/* ============================================
   AI赋能模块
   ============================================ */
.ai-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.ai-card {
    background: linear-gradient(135deg, var(--color-bg-card) 0%, #1F1F1F 100%);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 30px;
    transition: var(--transition);
}

.ai-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-3px);
}

.ai-icon {
    font-size: 40px;
    margin-bottom: 15px;
}

.ai-card h3 {
    font-size: 18px;
    color: #fff;
    margin-bottom: 12px;
}

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

/* ============================================
   社区模块
   ============================================ */
.community-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

.community-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
}

.community-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-3px);
}

.community-card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.community-card h3 {
    padding: 16px 16px 8px;
    font-size: 16px;
    color: #fff;
}

.community-card p {
    padding: 0 16px;
    font-size: 13px;
    color: var(--color-text-muted);
    line-height: 1.6;
}

.community-count {
    display: block;
    padding: 12px 16px;
    font-size: 12px;
    color: var(--color-primary-light);
    border-top: 1px solid var(--color-border);
    margin-top: 12px;
}

/* ============================================
   专家模块
   ============================================ */
.experts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 24px;
}

.expert-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
    text-align: center;
    padding-bottom: 20px;
    transition: var(--transition);
}

.expert-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-3px);
}

.expert-card img {
    width: 100%;
    height: 280px;
    object-fit: cover;
    object-position: top;
}

.expert-card h3 {
    padding: 16px 16px 4px;
    font-size: 16px;
    color: #fff;
}

.9hrjo8 {
    font-size: 13px;
    color: var(--color-primary-light);
    padding: 0 16px 8px;
}

.expert-card > p {
    padding: 0 16px;
    font-size: 13px;
    color: var(--color-text-muted);
    line-height: 1.6;
}

.wjj8qr {
    padding: 16px;
    display: flex;
    gap: 10px;
    justify-content: center;
}

.btn-small {
    display: inline-block;
    padding: 8px 18px;
    border-radius: var(--radius);
    font-size: 13px;
    font-weight: 600;
    background: var(--color-primary);
    color: #fff;
    transition: var(--transition);
}

.btn-small:hover {
    background: var(--color-primary-dark);
    color: #fff;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--color-silver);
    color: var(--color-silver);
}

.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: transparent;
}

/* 专家详情页 */
.f6b3k {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.9m0vls {
    display: flex;
    gap: 30px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
}

.9m0vls:hover {
    border-color: var(--color-primary);
}

.9m0vls img {
    width: 250px;
    min-height: 300px;
    object-fit: cover;
    object-position: top;
    flex-shrink: 0;
}

.mmduzg3 {
    padding: 24px;
}

.mmduzg3 h3 {
    font-size: 20px;
    color: #fff;
    margin-bottom: 8px;
}

.mmduzg3 p {
    color: var(--color-text-muted);
    font-size: 14px;
    margin-bottom: 8px;
    line-height: 1.6;
}

/* ============================================
   品牌墙
   ============================================ */
.ds93imd {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 16px;
    margin-bottom: 50px;
}

.ds93imd.large {
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
}

.5ee1vy {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 20px;
    text-align: center;
    transition: var(--transition);
}

.5ee1vy:hover {
    border-color: var(--color-primary);
    background: var(--color-bg-hover);
}

.5ee1vy span {
    font-size: 14px;
    font-weight: 700;
    color: var(--color-silver);
    letter-spacing: 1px;
}

/* ============================================
   How-To加入社区
   ============================================ */
.sx0rfjz h3 {
    font-size: 22px;
    color: #fff;
    margin-bottom: 25px;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
}

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

.step-card:hover {
    border-color: var(--color-primary);
}

.step-num {
    font-size: 36px;
    font-weight: 800;
    color: var(--color-primary);
    display: block;
    margin-bottom: 10px;
}

.step-card h4 {
    font-size: 16px;
    color: #fff;
    margin-bottom: 8px;
}

.step-card p {
    font-size: 13px;
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* ============================================
   联系我们
   ============================================ */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
}

.contact-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 24px;
}

.contact-card h3 {
    font-size: 18px;
    color: #fff;
    margin-bottom: 16px;
}

.contact-card img {
    border-radius: var(--radius);
    margin-bottom: 16px;
}

.contact-card ul li {
    padding: 6px 0;
    font-size: 14px;
    color: var(--color-text-muted);
    border-bottom: 1px solid var(--color-border);
}

.contact-card ul li strong {
    color: var(--color-text);
}

/* 联系页面 */
.contact-page-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
}

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

.contact-page-card h2 {
    font-size: 22px;
    border-bottom: 2px solid var(--color-primary);
    display: inline-block;
    padding-bottom: 8px;
    margin-bottom: 20px;
}

.contact-page-card img {
    border-radius: var(--radius);
    margin-bottom: 16px;
}

.contact-list li {
    padding: 8px 0;
    font-size: 14px;
    color: var(--color-text-muted);
    border-bottom: 1px solid var(--color-border);
}

.contact-list li strong {
    color: var(--color-text);
}

.qrcode-grid {
    display: flex;
    gap: 30px;
    margin-top: 20px;
}

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

.qrcode-item img {
    border-radius: var(--radius);
    margin: 0 auto 8px;
}

.qrcode-item p {
    font-size: 13px;
    color: var(--color-text-muted);
}

/* ============================================
   用户评论
   ============================================ */
.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

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

.review-card:hover {
    border-color: var(--color-primary);
}

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

.review-avatar {
    width: 40px;
    height: 40px;
    background: var(--color-primary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 700;
    flex-shrink: 0;
}

.review-header h4 {
    font-size: 14px;
    color: #fff;
}

.review-stars {
    color: #FFD700;
    font-size: 14px;
}

.review-card > p {
    font-size: 13px;
    color: var(--color-text-muted);
    line-height: 1.7;
    font-style: italic;
}

.review-date {
    display: block;
    margin-top: 10px;
    font-size: 12px;
    color: var(--color-text-muted);
}

/* ============================================
   FAQ模块
   ============================================ */
.faq-list {
    max-width: 900px;
}

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

.faq-question {
    padding: 16px 20px;
    font-size: 15px;
    font-weight: 600;
    color: #fff;
    background: var(--color-bg-card);
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    padding-right: 40px;
}

.faq-question::after {
    content: '+';
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 20px;
    color: var(--color-primary);
    transition: var(--transition);
}

.faq-item.active .faq-question::after {
    content: '-';
}

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

.faq-answer {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
    padding: 16px 20px;
    max-height: 500px;
}

.faq-answer p {
    font-size: 14px;
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* ============================================
   分享按钮
   ============================================ */
.share-buttons, .share-buttons-large {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.share-btn, .share-btn-lg {
    padding: 8px 20px;
    border: none;
    border-radius: var(--radius);
    font-size: 13px;
    font-weight: 600;
    color: #fff;
    cursor: pointer;
    transition: var(--transition);
}

.share-btn-lg {
    padding: 12px 28px;
    font-size: 15px;
}

.share-btn.wechat, .share-btn-lg.wechat { background: #07C160; }
.share-btn.weibo, .share-btn-lg.weibo { background: #E6162D; }
.share-btn.douyin, .share-btn-lg.douyin { background: #161823; border: 1px solid #444; }
.share-btn.bilibili, .share-btn-lg.bilibili { background: #00A1D6; }

.share-btn:hover, .share-btn-lg:hover {
    opacity: 0.85;
    transform: translateY(-2px);
}

/* ============================================
   页面Banner（内页）
   ============================================ */
.page-banner {
    background: linear-gradient(135deg, var(--color-bg-dark) 0%, #1A0A0E 100%);
    padding: 40px 0;
    border-bottom: 2px solid var(--color-primary);
}

.breadcrumb {
    font-size: 13px;
    color: var(--color-text-muted);
    margin-bottom: 16px;
}

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

.page-banner h1 {
    font-size: 28px;
    color: #fff;
    margin-bottom: 12px;
    line-height: 1.3;
}

.page-banner p {
    font-size: 15px;
    color: var(--color-text-muted);
    max-width: 800px;
    line-height: 1.7;
}

/* ============================================
   关于我们
   ============================================ */
.about-content {
    display: flex;
    gap: 30px;
    margin-bottom: 40px;
    align-items: flex-start;
}

.about-text {
    flex: 1;
}

.about-text p {
    margin-bottom: 16px;
    color: var(--color-text-muted);
    line-height: 1.8;
}

.about-img {
    width: 400px;
    border-radius: var(--radius);
    flex-shrink: 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

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

.stat-num {
    display: block;
    font-size: 32px;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 8px;
}

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

/* ============================================
   APP功能模块
   ============================================ */
.t7mi1fk {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 40px;
}

.7zk9xz {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 24px;
    transition: var(--transition);
}

.7zk9xz:hover {
    border-color: var(--color-primary);
}

.7zk9xz h3 {
    font-size: 18px;
    color: #fff;
    margin-bottom: 10px;
}

.7zk9xz p {
    font-size: 14px;
    color: var(--color-text-muted);
    line-height: 1.7;
}

.zdb6nwe {
    text-align: center;
    padding: 30px;
    background: var(--color-bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
}

.zdb6nwe img {
    margin: 0 auto 12px;
    border-radius: var(--radius);
}

.zdb6nwe p {
    font-size: 14px;
    color: var(--color-text-muted);
}

/* ============================================
   页脚
   ============================================ */
.footer {
    background: linear-gradient(180deg, #0A0A0A 0%, #050505 100%);
    padding: 50px 0 0;
    border-top: 3px solid var(--color-primary);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 30px;
    padding-bottom: 30px;
}

.footer-col h3 {
    font-size: 16px;
    color: #fff;
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--color-primary);
    display: inline-block;
}

.footer-logo {
    border-radius: 50%;
    margin-bottom: 12px;
}

.footer-col p {
    font-size: 13px;
    color: var(--color-text-muted);
    line-height: 1.6;
}

.footer-col ul li {
    padding: 4px 0;
    font-size: 13px;
    color: var(--color-text-muted);
}

.footer-col ul li strong {
    color: var(--color-text-light);
}

.footer .qrcodes {
    display: flex;
    gap: 20px;
}

.footer .qrcode-item img {
    border-radius: var(--radius);
    margin-bottom: 6px;
}

.footer .qrcode-item p {
    font-size: 11px;
    text-align: center;
}

.footer-bottom {
    border-top: 1px solid var(--color-border);
    padding: 20px 0;
    text-align: center;
}

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

/* ============================================
   响应式设计
   ============================================ */
@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        gap: 10px;
    }
    
    .main-nav ul {
        justify-content: center;
        gap: 3px;
    }
    
    .main-nav a {
        padding: 6px 10px;
        font-size: 12px;
    }
    
    .banner-bg, .banner-overlay {
        min-height: 350px;
    }
    
    .banner h1 {
        font-size: 24px;
    }
    
    .section h2 {
        font-size: 22px;
    }
    
    .video-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    }
    
    .contact-grid, .contact-page-grid {
        grid-template-columns: 1fr;
    }
    
    .about-content {
        flex-direction: column;
    }
    
    .about-img {
        width: 100%;
    }
    
    .9m0vls {
        flex-direction: column;
    }
    
    .9m0vls img {
        width: 100%;
        min-height: 200px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .footer .qrcodes {
        flex-direction: row;
    }
    
    .qrcode-grid {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .banner h1 {
        font-size: 20px;
    }
    
    .btn-primary, .btn-secondary {
        padding: 10px 20px;
        font-size: 14px;
    }
    
    .video-grid {
        grid-template-columns: 1fr;
    }
    
    .experts-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   面包屑导航（增强版）
   ============================================ */
.breadcrumb-nav {
    background: var(--color-bg-section);
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border);
    font-size: 13px;
    color: var(--color-text-muted);
}

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

.breadcrumb-nav a:hover {
    color: var(--color-primary);
    text-decoration: underline;
}

/* ============================================
   发展历程时间线
   ============================================ */
.timeline {
    position: relative;
    padding-left: 40px;
    margin-bottom: 50px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--color-primary);
}

.timeline-item {
    position: relative;
    margin-bottom: 30px;
    padding-left: 20px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -32px;
    top: 5px;
    width: 14px;
    height: 14px;
    background: var(--color-primary);
    border-radius: 50%;
    border: 3px solid var(--color-bg-dark);
}

.timeline-year {
    display: inline-block;
    background: var(--color-primary);
    color: #fff;
    padding: 4px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 10px;
}

.timeline-content h4 {
    font-size: 17px;
    color: #fff;
    margin-bottom: 6px;
}

.timeline-content p {
    font-size: 14px;
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* ============================================
   企业资质卡片
   ============================================ */
.nlm3t6 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 24px;
    margin-bottom: 40px;
}

.gzn7rqk1 {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 28px;
    transition: var(--transition);
}

.gzn7rqk1:hover {
    border-color: var(--color-primary);
}

.gzn7rqk1 h3 {
    font-size: 18px;
    color: #fff;
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--color-primary);
}

.gzn7rqk1 ul {
    list-style: none;
}

.gzn7rqk1 ul li {
    padding: 6px 0;
    font-size: 14px;
    color: var(--color-text-muted);
    border-bottom: 1px solid var(--color-border);
    line-height: 1.6;
}

.gzn7rqk1 ul li strong {
    color: var(--color-text);
}

/* ============================================
   内容页（隐私政策、服务条款等）
   ============================================ */
.content-page {
    max-width: 900px;
}

.content-page article h2 {
    font-size: 22px;
    color: #fff;
    margin-top: 35px;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--color-primary);
    display: inline-block;
}

.content-page article p {
    font-size: 15px;
    color: var(--color-text-muted);
    line-height: 1.8;
    margin-bottom: 16px;
}

.content-page article ul {
    margin-left: 20px;
    margin-bottom: 16px;
}

.content-page article ul li {
    padding: 4px 0;
    font-size: 14px;
    color: var(--color-text-muted);
    list-style: disc;
}

/* ============================================
   视频徽章
   ============================================ */
.5irdc267 {
    position: absolute;
    top: 8px;
    left: 8px;
    background: var(--color-primary);
    color: #fff;
    padding: 3px 10px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    z-index: 2;
}

.b4m85 {
    font-size: 12px;
    color: var(--color-text-muted);
    margin-bottom: 8px;
}

/* ============================================
   合作模式卡片
   ============================================ */
.f7tvc2n1 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-top: 30px;
}

.n12bzp {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 28px;
    transition: var(--transition);
}

.n12bzp:hover {
    border-color: var(--color-primary);
    transform: translateY(-3px);
}

.n12bzp h3 {
    font-size: 18px;
    color: #fff;
    margin-bottom: 12px;
}

.n12bzp p {
    font-size: 14px;
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* ============================================
   专家详情页 - 增强列表样式
   ============================================ */
.mmduzg3 ul {
    margin-left: 20px;
    margin-bottom: 10px;
}

.mmduzg3 ul li {
    padding: 3px 0;
    font-size: 13px;
    color: var(--color-text-muted);
    list-style: disc;
}

/* ============================================
   联系二维码增强
   ============================================ */
.q0yk9c {
    display: flex;
    gap: 20px;
    margin-top: 15px;
}

/* ============================================
   响应式补充
   ============================================ */
@media (max-width: 768px) {
    .nlm3t6 {
        grid-template-columns: 1fr;
    }
    
    .timeline {
        padding-left: 30px;
    }
    
    .timeline-item {
        padding-left: 15px;
    }
    
    .f7tvc2n1 {
        grid-template-columns: 1fr;
    }
    
    .q0yk9c {
        flex-direction: column;
        align-items: center;
    }
}

/* ============================================
   页脚法律链接和免责声明
   ============================================ */
.footer-legal {
    text-align: center;
    padding: 15px 0;
    border-top: 1px solid var(--color-border);
    margin-top: 20px;
}

.footer-legal a {
    color: var(--color-text-muted);
    font-size: 13px;
    transition: var(--transition);
}

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

.footer-legal span {
    color: var(--color-border);
    margin: 0 10px;
}

.3xht1 {
    margin-top: 10px;
    font-size: 12px;
    color: var(--color-text-muted);
    border-top: 1px solid var(--color-border);
    padding-top: 10px;
}

.00psc {
    font-size: 12px;
    color: var(--color-text-muted);
    margin-top: 8px;
}

.footer-bottom p:nth-child(2) {
    margin-top: 6px;
    font-size: 12px;
}

/* ============================================
   HTML5 Video Player 样式
   ============================================ */
.video-thumb {
    position: relative;
    overflow: hidden;
}

.video-thumb video.video-player {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
    display: none;
}

.video-thumb img.video-poster {
    position: relative;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 1;
    transition: opacity 0.3s ease;
}

.video-card:hover .video-thumb video.video-player {
    display: block;
}

.video-card:hover .video-thumb img.video-poster {
    opacity: 0;
    z-index: 0;
}

.video-thumb .play-overlay {
    z-index: 5;
}

.video-thumb .video-duration {
    z-index: 5;
}

.video-thumb .5irdc267 {
    z-index: 5;
}