/* =============================================
   成人视频传媒 - 主样式文件
   cn-bggame.cn
   ============================================= */

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

:root {
    --primary: #e8547a;
    --primary-dark: #c73d62;
    --primary-light: #f9d0db;
    --secondary: #c9a84c;
    --secondary-light: #f5e6b8;
    --dark: #1a1a2e;
    --dark-2: #16213e;
    --dark-3: #0f3460;
    --text: #333344;
    --text-light: #666677;
    --text-muted: #999aaa;
    --white: #ffffff;
    --bg-light: #fdf8f9;
    --bg-gray: #f5f5f8;
    --border: #e8e0e8;
    --shadow: 0 4px 20px rgba(232,84,122,0.12);
    --shadow-lg: 0 8px 40px rgba(232,84,122,0.18);
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 20px;
    --transition: all 0.3s ease;
    --font: 'PingFang SC', 'Microsoft YaHei', '微软雅黑', sans-serif;
}

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

body {
    font-family: var(--font);
    color: var(--text);
    background: var(--white);
    line-height: 1.7;
    overflow-x: hidden;
}

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

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

ul, ol {
    list-style: none;
}

button {
    cursor: pointer;
    border: none;
    outline: none;
    font-family: var(--font);
}

input, textarea, select {
    font-family: var(--font);
    outline: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 70px 0;
}

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

.section-title h2 {
    font-size: 2rem;
    color: var(--dark);
    font-weight: 700;
    margin-bottom: 12px;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 2px;
    margin: 10px auto 0;
}

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

/* =============================================
   顶部公告栏
   ============================================= */
.top-bar {
    background: linear-gradient(135deg, var(--dark), var(--dark-3));
    color: rgba(255,255,255,0.85);
    font-size: 0.8rem;
    padding: 8px 0;
    text-align: center;
}

.top-bar a {
    color: var(--secondary);
    margin: 0 8px;
}

.top-bar a:hover {
    color: var(--white);
}

/* =============================================
   导航栏
   ============================================= */
.header {
    background: var(--white);
    box-shadow: 0 2px 20px rgba(0,0,0,0.08);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    max-width: 1200px;
    margin: 0 auto;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.logo img {
    height: 48px;
    width: auto;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-text .brand {
    font-size: 1.4rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.logo-text .slogan {
    font-size: 0.7rem;
    color: var(--text-muted);
    letter-spacing: 1px;
}

.nav {
    display: flex;
    align-items: center;
    gap: 5px;
}

.nav a {
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text);
    transition: var(--transition);
    white-space: nowrap;
}

.nav a:hover,
.nav a.active {
    color: var(--primary);
    background: var(--primary-light);
}

.nav-cta {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark)) !important;
    color: var(--white) !important;
    padding: 8px 18px !important;
    border-radius: 20px !important;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
    background: linear-gradient(135deg, var(--primary-dark), var(--primary)) !important;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 5px;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: var(--transition);
}

/* =============================================
   搜索栏
   ============================================= */
.search-bar {
    background: var(--bg-light);
    border-bottom: 1px solid var(--border);
    padding: 12px 0;
}

.search-bar .container {
    display: flex;
    align-items: center;
    gap: 10px;
}

.search-form {
    display: flex;
    align-items: center;
    background: var(--white);
    border: 2px solid var(--border);
    border-radius: 30px;
    padding: 6px 16px;
    flex: 1;
    max-width: 600px;
    margin: 0 auto;
    transition: var(--transition);
}

.search-form:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(232,84,122,0.1);
}

.search-form input {
    flex: 1;
    border: none;
    background: none;
    font-size: 0.9rem;
    color: var(--text);
    padding: 0 10px;
}

.search-form input::placeholder {
    color: var(--text-muted);
}

.search-form button {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    border: none;
    border-radius: 20px;
    padding: 6px 18px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition);
}

.search-form button:hover {
    transform: scale(1.05);
}

.hot-tags {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    color: var(--text-muted);
    flex-wrap: wrap;
    justify-content: center;
    margin-top: 6px;
}

.hot-tags span {
    color: var(--text-muted);
}

.hot-tags a {
    color: var(--primary);
    background: var(--primary-light);
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 0.78rem;
    transition: var(--transition);
}

.hot-tags a:hover {
    background: var(--primary);
    color: var(--white);
}

/* =============================================
   面包屑
   ============================================= */
.breadcrumb {
    background: var(--bg-light);
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.85rem;
}

.breadcrumb .container {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-muted);
}

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

.breadcrumb a:hover {
    text-decoration: underline;
}

.breadcrumb .sep {
    color: var(--border);
}

/* =============================================
   Hero Banner
   ============================================= */
.hero {
    position: relative;
    min-height: 520px;
    background: linear-gradient(135deg, var(--dark) 0%, var(--dark-3) 50%, #4a1942 100%);
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('../images/hero-banner.jpg') center/cover no-repeat;
    opacity: 0.35;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(26,26,46,0.85) 0%, rgba(15,52,96,0.6) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    padding: 60px 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.hero-text h1 {
    font-size: 2.8rem;
    color: var(--white);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 16px;
}

.hero-text h1 .highlight {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-text p {
    color: rgba(255,255,255,0.8);
    font-size: 1.05rem;
    margin-bottom: 30px;
    line-height: 1.8;
}

.hero-btns {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    padding: 12px 28px;
    border-radius: 30px;
    font-size: 0.95rem;
    font-weight: 600;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(232,84,122,0.4);
}

.btn-outline {
    background: transparent;
    color: var(--white);
    padding: 12px 28px;
    border-radius: 30px;
    font-size: 0.95rem;
    font-weight: 600;
    border: 2px solid rgba(255,255,255,0.5);
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.btn-outline:hover {
    background: rgba(255,255,255,0.1);
    border-color: var(--white);
    transform: translateY(-3px);
}

.hero-stats {
    display: flex;
    gap: 30px;
    margin-top: 30px;
}

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

.stat-item .num {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--secondary);
    line-height: 1;
}

.stat-item .label {
    font-size: 0.78rem;
    color: rgba(255,255,255,0.65);
    margin-top: 4px;
}

.hero-video-preview {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.hero-video-preview img {
    width: 100%;
    height: 280px;
    object-fit: cover;
}

.hero-play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 64px;
    height: 64px;
    background: rgba(232,84,122,0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    backdrop-filter: blur(4px);
}

.hero-play-btn:hover {
    transform: translate(-50%, -50%) scale(1.1);
    background: var(--primary);
}

.hero-play-btn svg {
    width: 24px;
    height: 24px;
    fill: var(--white);
    margin-left: 4px;
}

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

.video-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
    transition: var(--transition);
    cursor: pointer;
}

.video-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

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

.video-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

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

.video-play-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

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

.play-btn-circle {
    width: 54px;
    height: 54px;
    background: rgba(232,84,122,0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(4px);
    transition: var(--transition);
}

.play-btn-circle:hover {
    transform: scale(1.15);
    background: var(--primary);
}

.play-btn-circle svg {
    width: 22px;
    height: 22px;
    fill: var(--white);
    margin-left: 3px;
}

.video-duration {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background: rgba(0,0,0,0.75);
    color: var(--white);
    font-size: 0.75rem;
    padding: 2px 7px;
    border-radius: 4px;
}

.video-tag {
    position: absolute;
    top: 8px;
    left: 8px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    font-size: 0.72rem;
    padding: 3px 9px;
    border-radius: 12px;
    font-weight: 600;
}

.video-info {
    padding: 14px 16px;
}

.video-info h3 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 8px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.78rem;
    color: var(--text-muted);
}

.video-meta span {
    display: flex;
    align-items: center;
    gap: 3px;
}

/* =============================================
   功能模块卡片
   ============================================= */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
}

.feature-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 28px 20px;
    text-align: center;
    border: 1px solid var(--border);
    transition: var(--transition);
    cursor: pointer;
}

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

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-light), var(--secondary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    font-size: 1.6rem;
}

.feature-card h3 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 8px;
}

.feature-card p {
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* =============================================
   专家展示
   ============================================= */
.expert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 28px;
}

.expert-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
    transition: var(--transition);
}

.expert-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.expert-photo {
    position: relative;
    height: 220px;
    overflow: hidden;
}

.expert-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top;
    transition: transform 0.4s ease;
}

.expert-card:hover .expert-photo img {
    transform: scale(1.05);
}

.expert-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
    font-size: 0.72rem;
    padding: 4px 10px;
    border-radius: 12px;
    font-weight: 600;
}

.expert-info {
    padding: 18px;
}

.expert-info h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 4px;
}

.expert-title {
    font-size: 0.82rem;
    color: var(--primary);
    margin-bottom: 10px;
    font-weight: 500;
}

.expert-desc {
    font-size: 0.82rem;
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 14px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.expert-actions {
    display: flex;
    gap: 8px;
}

.btn-sm {
    padding: 7px 14px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.btn-sm.primary {
    background: var(--primary);
    color: var(--white);
}

.btn-sm.primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.btn-sm.outline {
    border: 1px solid var(--primary);
    color: var(--primary);
}

.btn-sm.outline:hover {
    background: var(--primary-light);
}

/* =============================================
   评价区
   ============================================= */
.review-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
}

.review-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 24px;
    border: 1px solid var(--border);
    position: relative;
    transition: var(--transition);
}

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

.review-card::before {
    content: '"';
    position: absolute;
    top: 10px;
    right: 20px;
    font-size: 4rem;
    color: var(--primary-light);
    font-family: Georgia, serif;
    line-height: 1;
}

.review-stars {
    color: var(--secondary);
    font-size: 0.9rem;
    margin-bottom: 10px;
}

.review-text {
    font-size: 0.88rem;
    color: var(--text);
    line-height: 1.7;
    margin-bottom: 16px;
}

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

.reviewer-avatar {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 0.9rem;
    font-weight: 700;
    flex-shrink: 0;
}

.reviewer-name {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--dark);
}

.reviewer-info {
    font-size: 0.75rem;
    color: var(--text-muted);
}

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

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

.faq-item.active {
    border-color: var(--primary);
    box-shadow: 0 2px 12px rgba(232,84,122,0.1);
}

.faq-question {
    padding: 18px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    background: var(--white);
    transition: var(--transition);
}

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

.faq-question h3 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--dark);
    flex: 1;
}

.faq-icon {
    width: 24px;
    height: 24px;
    background: var(--primary-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 1.1rem;
    font-weight: 700;
    flex-shrink: 0;
    transition: var(--transition);
}

.faq-item.active .faq-icon {
    background: var(--primary);
    color: var(--white);
    transform: rotate(45deg);
}

.faq-answer {
    display: none;
    padding: 0 20px 18px;
    font-size: 0.88rem;
    color: var(--text-light);
    line-height: 1.8;
    background: var(--bg-light);
}

.faq-item.active .faq-answer {
    display: block;
}

/* =============================================
   合作品牌
   ============================================= */
.partner-logos {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
    align-items: center;
}

.partner-logo {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 14px 24px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-light);
    transition: var(--transition);
    min-width: 120px;
    text-align: center;
}

.partner-logo:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

/* =============================================
   社区功能区
   ============================================= */
.community-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 20px;
}

.community-card {
    background: linear-gradient(135deg, var(--dark), var(--dark-3));
    border-radius: var(--radius);
    padding: 28px 20px;
    text-align: center;
    color: var(--white);
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.community-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(232,84,122,0.15) 0%, transparent 70%);
    transition: var(--transition);
}

.community-card:hover::before {
    opacity: 1.5;
}

.community-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(232,84,122,0.25);
}

.community-icon {
    font-size: 2.2rem;
    margin-bottom: 14px;
}

.community-card h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.community-card p {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.65);
    line-height: 1.5;
}

.community-card .count {
    font-size: 0.78rem;
    color: var(--secondary);
    margin-top: 10px;
    font-weight: 600;
}

/* =============================================
   AI赋能区
   ============================================= */
.ai-section {
    background: linear-gradient(135deg, var(--dark) 0%, #1a0a2e 100%);
    color: var(--white);
}

.ai-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.ai-features {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.ai-feature-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.ai-feature-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
}

.ai-feature-text h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--white);
}

.ai-feature-text p {
    font-size: 0.83rem;
    color: rgba(255,255,255,0.65);
    line-height: 1.6;
}

.ai-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.ai-image img {
    width: 100%;
    height: 350px;
    object-fit: cover;
}

/* =============================================
   联系区
   ============================================= */
.contact-section {
    background: var(--bg-light);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: start;
}

.contact-info h2 {
    font-size: 1.8rem;
    color: var(--dark);
    margin-bottom: 16px;
}

.contact-info p {
    color: var(--text-light);
    margin-bottom: 24px;
    line-height: 1.8;
}

.contact-items {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-item {
    display: flex;
    gap: 14px;
    align-items: flex-start;
}

.contact-item-icon {
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, var(--primary-light), var(--secondary-light));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.contact-item-text h4 {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 3px;
}

.contact-item-text p, .contact-item-text a {
    font-size: 0.83rem;
    color: var(--text-light);
}

.contact-item-text a:hover {
    color: var(--primary);
}

.qr-codes {
    display: flex;
    gap: 24px;
    margin-top: 24px;
}

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

.qr-item img {
    width: 110px;
    height: 110px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    border: 2px solid var(--border);
    margin-bottom: 8px;
}

.qr-item p {
    font-size: 0.78rem;
    color: var(--text-muted);
}

/* =============================================
   社交分享
   ============================================= */
.share-bar {
    background: var(--bg-gray);
    padding: 20px 0;
    border-top: 1px solid var(--border);
}

.share-bar .container {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
    justify-content: center;
}

.share-label {
    font-size: 0.88rem;
    color: var(--text-muted);
    font-weight: 500;
}

.share-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--white);
    transition: var(--transition);
    cursor: pointer;
}

.share-btn:hover {
    transform: translateY(-2px);
    opacity: 0.9;
}

.share-wechat { background: #07c160; }
.share-weibo { background: #e6162d; }
.share-douyin { background: #010101; }
.share-bilibili { background: #00a1d6; }
.share-qq { background: #12b7f5; }

/* =============================================
   底部
   ============================================= */
.footer {
    background: linear-gradient(135deg, var(--dark) 0%, var(--dark-2) 100%);
    color: rgba(255,255,255,0.75);
    padding: 60px 0 0;
}

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

.footer-brand .logo-text .brand {
    font-size: 1.6rem;
}

.footer-brand p {
    font-size: 0.83rem;
    line-height: 1.8;
    margin: 14px 0 20px;
    color: rgba(255,255,255,0.6);
}

.footer-qr {
    display: flex;
    gap: 16px;
}

.footer-qr-item {
    text-align: center;
}

.footer-qr-item img {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.2);
    margin-bottom: 6px;
}

.footer-qr-item p {
    font-size: 0.7rem;
    color: rgba(255,255,255,0.5);
}

.footer-col h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 18px;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-links a {
    font-size: 0.83rem;
    color: rgba(255,255,255,0.6);
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary);
    padding-left: 4px;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 20px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
    font-size: 0.8rem;
    color: rgba(255,255,255,0.45);
}

.footer-bottom a {
    color: rgba(255,255,255,0.45);
}

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

.footer-icp {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

/* =============================================
   标签
   ============================================= */
.tag {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
}

.tag-primary {
    background: var(--primary-light);
    color: var(--primary);
}

.tag-secondary {
    background: var(--secondary-light);
    color: #8a6a00;
}

.tag-dark {
    background: var(--dark);
    color: var(--white);
}

/* =============================================
   分页
   ============================================= */
.pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 40px;
}

.page-btn {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.88rem;
    border: 1px solid var(--border);
    color: var(--text);
    cursor: pointer;
    transition: var(--transition);
}

.page-btn:hover,
.page-btn.active {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

/* =============================================
   How-To 指南
   ============================================= */
.howto-steps {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 24px;
    counter-reset: step;
}

.howto-step {
    background: var(--white);
    border-radius: var(--radius);
    padding: 28px 20px;
    text-align: center;
    border: 1px solid var(--border);
    position: relative;
    transition: var(--transition);
    counter-increment: step;
}

.howto-step::before {
    content: counter(step);
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    width: 28px;
    height: 28px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.82rem;
    font-weight: 700;
}

.howto-step:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow);
    transform: translateY(-4px);
}

.howto-icon {
    font-size: 2rem;
    margin-bottom: 12px;
}

.howto-step h3 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 8px;
}

.howto-step p {
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.6;
}

/* =============================================
   内页横幅
   ============================================= */
.page-hero {
    background: linear-gradient(135deg, var(--dark) 0%, var(--dark-3) 100%);
    padding: 60px 0;
    text-align: center;
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, rgba(232,84,122,0.2) 0%, transparent 70%);
}

.page-hero h1 {
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 12px;
    position: relative;
}

.page-hero p {
    font-size: 1rem;
    color: rgba(255,255,255,0.75);
    max-width: 600px;
    margin: 0 auto;
    position: relative;
}

/* =============================================
   响应式
   ============================================= */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
    }
    
    .hero-video-preview {
        display: none;
    }
    
    .ai-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        gap: 4px;
    }
    
    .nav.open {
        display: flex;
    }
    
    .nav a {
        width: 100%;
        text-align: center;
        padding: 12px;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .hero-text h1 {
        font-size: 1.8rem;
    }
    
    .hero-stats {
        gap: 16px;
    }
    
    .section {
        padding: 50px 0;
    }
    
    .section-title h2 {
        font-size: 1.6rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .video-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .expert-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .review-grid {
        grid-template-columns: 1fr;
    }
    
    .howto-steps {
        grid-template-columns: 1fr 1fr;
    }
    
    .qr-codes {
        flex-wrap: wrap;
    }
}

@media (max-width: 480px) {
    .video-grid {
        grid-template-columns: 1fr;
    }
    
    .expert-grid {
        grid-template-columns: 1fr;
    }
    
    .howto-steps {
        grid-template-columns: 1fr;
    }
    
    .hero-btns {
        flex-direction: column;
    }
    
    .hero-stats {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .feature-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .community-grid {
        grid-template-columns: 1fr 1fr;
    }
}

/* =============================================
   动画
   ============================================= */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

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

/* =============================================
   滚动条
   ============================================= */
::-webkit-scrollbar {
    width: 6px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 3px;
}

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

/* =============================================
   选中颜色
   ============================================= */
::selection {
    background: var(--primary-light);
    color: var(--primary-dark);
}

/* =============================================
   加载动画
   ============================================= */
.lazy-load {
    opacity: 0;
    transition: opacity 0.4s ease;
}

.lazy-load.loaded {
    opacity: 1;
}

/* =============================================
   视频模态框
   ============================================= */
.video-modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.85);
    z-index: 9999;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.video-modal.active {
    display: flex;
}

.video-modal-inner {
    background: var(--dark);
    border-radius: var(--radius);
    width: 100%;
    max-width: 800px;
    overflow: hidden;
    position: relative;
}

.video-modal-close {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 32px;
    height: 32px;
    background: rgba(255,255,255,0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--white);
    font-size: 1.2rem;
    z-index: 1;
    transition: var(--transition);
}

.video-modal-close:hover {
    background: var(--primary);
}

.video-placeholder {
    width: 100%;
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, var(--dark), var(--dark-3));
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.6);
    gap: 12px;
}

.video-placeholder .play-icon {
    width: 70px;
    height: 70px;
    background: rgba(232,84,122,0.3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
}

.video-modal-title {
    padding: 16px 20px;
    color: var(--white);
    font-size: 0.95rem;
    font-weight: 600;
}

/* =============================================
   时间线 Timeline
   ============================================= */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px 0;
}
.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary), var(--secondary));
    transform: translateX(-50%);
}
.timeline-item {
    display: flex;
    justify-content: flex-end;
    padding-right: calc(50% + 30px);
    margin-bottom: 40px;
    position: relative;
}
.timeline-item.right {
    justify-content: flex-start;
    padding-right: 0;
    padding-left: calc(50% + 30px);
}
.timeline-item::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 20px;
    width: 14px;
    height: 14px;
    background: var(--primary);
    border-radius: 50%;
    transform: translateX(-50%);
    box-shadow: 0 0 0 4px rgba(232,84,122,0.2);
}
.timeline-content {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px 24px;
    max-width: 320px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}
.timeline-content:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}
.timeline-year {
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--primary);
    background: var(--primary-light);
    padding: 3px 10px;
    border-radius: 20px;
    display: inline-block;
    margin-bottom: 8px;
}
.timeline-content h3 {
    font-size: 0.95rem;
    color: var(--dark);
    margin-bottom: 6px;
}
.timeline-content p {
    font-size: 0.82rem;
    color: var(--text-muted);
    line-height: 1.6;
}

/* =============================================
   标签 Tags
   ============================================= */
.tag {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
    margin-right: 4px;
    margin-bottom: 4px;
    text-decoration: none;
    transition: var(--transition);
}
.tag-primary {
    background: var(--primary-light);
    color: var(--primary-dark);
}
.tag-secondary {
    background: var(--secondary-light);
    color: #8a6a1a;
}
.tag:hover {
    opacity: 0.8;
}

/* =============================================
   小按钮 btn-sm
   ============================================= */
.btn-sm {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 16px;
    border-radius: 20px;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: var(--transition);
    border: none;
}
.btn-sm.primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
}
.btn-sm.primary:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}
.btn-sm.outline {
    background: transparent;
    color: var(--primary);
    border: 1.5px solid var(--primary);
}
.btn-sm.outline:hover {
    background: var(--primary-light);
}

/* =============================================
   响应式补充
   ============================================= */
@media (max-width: 768px) {
    .timeline::before { left: 16px; }
    .timeline-item,
    .timeline-item.right {
        justify-content: flex-start;
        padding-left: 50px;
        padding-right: 0;
    }
    .timeline-item::after { left: 16px; }
    .timeline-content { max-width: 100%; }
}

/* =============================================
   搜索结果页
   ============================================= */
.search-result-item {
    padding: 20px 0;
    border-bottom: 1px solid var(--border);
}
.search-result-item h3 a {
    color: var(--dark-3);
    font-size: 1.05rem;
    text-decoration: none;
}
.search-result-item h3 a:hover { color: var(--primary); }
.search-result-item .url { color: #059669; font-size: 0.8rem; margin: 4px 0; }
.search-result-item p { color: var(--text-muted); font-size: 0.88rem; line-height: 1.6; }

/* =============================================
   滚动条美化
   ============================================= */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-light); }
::-webkit-scrollbar-thumb { background: var(--primary-light); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

/* =============================================
   打印样式
   ============================================= */
@media print {
    .header, .footer, .share-bar, .top-bar, .video-modal { display: none !important; }
    body { font-size: 12pt; color: #000; }
}

/* =============================================
   H5 Video 卡片（指令要求：鼠标移入显示播放按钮）
   ============================================= */
.h5-video-card {
    border-radius: var(--radius);
    overflow: hidden;
    background: rgba(255,255,255,0.06);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
}
.h5-video-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0,0,0,0.4);
}
.h5-video-wrap {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
    background: #111;
    overflow: hidden;
}
.h5-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.h5-play-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0,0,0,0.35);
    opacity: 0;
    transition: opacity 0.25s ease;
    cursor: pointer;
    z-index: 2;
}
.h5-video-card:hover .h5-play-overlay {
    opacity: 1;
}
.h5-play-btn {
    width: 56px;
    height: 56px;
    background: rgba(255,255,255,0.92);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s ease, background 0.2s ease;
    box-shadow: 0 4px 16px rgba(0,0,0,0.3);
}
.h5-play-overlay:hover .h5-play-btn {
    transform: scale(1.12);
    background: var(--primary);
}
.h5-play-btn svg {
    width: 24px;
    height: 24px;
    fill: var(--dark);
    margin-left: 3px;
}
.h5-play-overlay:hover .h5-play-btn svg {
    fill: var(--white);
}
@media (max-width: 768px) {
    .h5-play-overlay {
        opacity: 1;
        background: rgba(0,0,0,0.2);
    }
}