/* ============================================
   成人视频 - 原创CSS设计
   配色：深空蓝 + 琥珀金 + 玫瑰粉
   ============================================ */

:root {
    --primary: #0d1b2a;
    --primary-light: #1b2d44;
    --secondary: #d4a843;
    --secondary-light: #e8c36a;
    --accent: #e84393;
    --accent-light: #fd79a8;
    --text-primary: #f0f0f0;
    --text-secondary: #a0aec0;
    --text-dark: #2d3748;
    --bg-primary: #0a0f1a;
    --bg-secondary: #111827;
    --bg-card: #1a2332;
    --bg-card-hover: #243044;
    --border-color: rgba(212, 168, 67, 0.2);
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-lg: 20px;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 8px 40px rgba(212, 168, 67, 0.15);
    --shadow-glow: 0 0 30px rgba(232, 67, 147, 0.1);
    --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --max-width: 1280px;
    --font-main: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
}

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

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

body {
    font-family: var(--font-main);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.8;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--secondary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--secondary-light); }

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

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

/* ============ 导航栏 ============ */
.site-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 15, 26, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    padding: 0 24px;
    height: 68px;
    display: flex;
    align-items: center;
}

.nav-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--secondary);
    white-space: nowrap;
}

.nav-logo img {
    width: 38px;
    height: 38px;
    border-radius: 8px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 6px;
}

.nav-menu a {
    display: block;
    padding: 8px 16px;
    color: var(--text-secondary);
    font-size: 0.92rem;
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
    white-space: nowrap;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--secondary);
    background: rgba(212, 168, 67, 0.1);
}

.nav-download {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 20px;
    background: linear-gradient(135deg, var(--secondary), var(--accent));
    color: #fff;
    font-size: 0.88rem;
    font-weight: 600;
    border-radius: 24px;
    white-space: nowrap;
    transition: var(--transition);
}

.nav-download:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(212, 168, 67, 0.3);
    color: #fff;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 4px;
}

/* ============ 英雄区域 / 欢迎区域 ============ */
.hero-section {
    margin-top: 68px;
    position: relative;
    min-height: 520px;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--primary-light) 50%, var(--bg-secondary) 100%);
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.25;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(10, 15, 26, 0.5) 0%, rgba(10, 15, 26, 0.85) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 720px;
    padding: 80px 24px;
}

.hero-content h1 {
    font-size: 2.6rem;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--secondary), var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-content p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: 28px;
}

.hero-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 36px;
    background: linear-gradient(135deg, var(--secondary), var(--accent));
    color: #fff;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 30px;
    transition: var(--transition);
}

.hero-cta:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(212, 168, 67, 0.35);
    color: #fff;
}

/* ============ 通用区块标题 ============ */
.section-title {
    text-align: center;
    margin-bottom: 48px;
}

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

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--secondary), var(--accent));
    border-radius: 2px;
}

.section-title p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-top: 16px;
}

/* ============ 内容区块通用 ============ */
.content-section {
    padding: 72px 0;
}

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

/* ============ 精选视频区 ============ */
.featured-video {
    padding: 72px 0;
    background: var(--bg-secondary);
}

.featured-wrapper {
    display: grid;
    grid-template-columns: 1.6fr 1fr;
    gap: 36px;
    align-items: center;
}

.featured-player {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.featured-player img {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
}

.play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 72px;
    height: 72px;
    background: rgba(212, 168, 67, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.play-btn::after {
    content: '';
    border-left: 22px solid #fff;
    border-top: 14px solid transparent;
    border-bottom: 14px solid transparent;
    margin-left: 4px;
}

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

.featured-info h3 {
    font-size: 1.5rem;
    margin-bottom: 16px;
    color: var(--secondary);
}

.featured-info p {
    color: var(--text-secondary);
    line-height: 1.9;
}

/* ============ 关于我们 ============ */
.about-section {
    padding: 72px 0;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.about-text h2 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--secondary);
}

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

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

.about-image img {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
}

/* ============ 视频卡片网格 ============ */
.video-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

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

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

.video-card .card-thumb {
    position: relative;
    overflow: hidden;
}

.video-card .card-thumb img {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.video-card:hover .card-thumb img {
    transform: scale(1.08);
}

.card-badge {
    position: absolute;
    top: 10px;
    left: 10px;
    padding: 3px 10px;
    background: var(--accent);
    color: #fff;
    font-size: 0.75rem;
    border-radius: 4px;
    font-weight: 600;
}

.card-body {
    padding: 16px;
}

.card-body h3 {
    font-size: 0.98rem;
    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;
    margin-bottom: 8px;
    font-size: 0.82rem;
}

.rating {
    color: var(--secondary);
    font-weight: 600;
}

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

.video-desc {
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ============ 资质认证 ============ */
.credentials-section {
    padding: 72px 0;
    background: var(--bg-secondary);
}

.credentials-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.credential-card {
    background: var(--bg-card);
    padding: 32px 24px;
    border-radius: var(--border-radius);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.credential-card:hover {
    border-color: var(--secondary);
    transform: translateY(-4px);
}

.credential-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 16px;
    background: linear-gradient(135deg, var(--secondary), var(--accent));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.credential-card h3 {
    font-size: 1.05rem;
    margin-bottom: 8px;
    color: var(--secondary);
}

.credential-card p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ============ 支付方式 ============ */
.payment-section {
    padding: 72px 0;
}

.payment-icons {
    display: flex;
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
}

.payment-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 20px 28px;
    background: var(--bg-card);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    min-width: 120px;
}

.payment-item:hover {
    border-color: var(--secondary);
    transform: translateY(-3px);
}

.payment-item .pay-icon {
    font-size: 2rem;
}

.payment-item span {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ============ 客户支持 ============ */
.support-section {
    padding: 72px 0;
    background: var(--bg-secondary);
}

.support-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.support-card {
    background: var(--bg-card);
    padding: 36px 28px;
    border-radius: var(--border-radius);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.support-card:hover {
    border-color: var(--accent);
}

.support-icon {
    font-size: 2.2rem;
    margin-bottom: 16px;
}

.support-card h3 {
    font-size: 1.1rem;
    margin-bottom: 10px;
    color: var(--accent-light);
}

.support-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ============ 负责任观影 ============ */
.responsible-section {
    padding: 72px 0;
}

.responsible-content {
    max-width: 800px;
    margin: 0 auto;
    background: var(--bg-card);
    padding: 40px;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
}

.responsible-content h3 {
    color: var(--accent);
    font-size: 1.15rem;
    margin-bottom: 12px;
    margin-top: 24px;
}

.responsible-content h3:first-child {
    margin-top: 0;
}

.responsible-content p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 12px;
}

/* ============ FAQ手风琴 ============ */
.faq-section {
    padding: 72px 0;
    background: var(--bg-secondary);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

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

.faq-item.active {
    border-color: var(--secondary);
}

.faq-question {
    width: 100%;
    background: none;
    border: none;
    padding: 20px 24px;
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-main);
    transition: var(--transition);
}

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

.faq-arrow {
    font-size: 0.8rem;
    transition: transform 0.35s ease;
    color: var(--secondary);
}

.faq-item.active .faq-arrow {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-item.active .faq-answer {
    max-height: 300px;
    padding: 0 24px 20px;
}

.faq-answer p {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 0.92rem;
}

/* ============ 用户评价 ============ */
.reviews-section {
    padding: 72px 0;
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

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

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

.review-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 14px;
}

.review-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--border-color);
}

.review-info h4 {
    font-size: 0.95rem;
    color: var(--text-primary);
}

.review-info span {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

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

.review-text {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.7;
}

.review-date {
    margin-top: 12px;
    font-size: 0.78rem;
    color: var(--text-secondary);
    opacity: 0.7;
}

/* ============ 热门标签 ============ */
.tags-section {
    padding: 72px 0;
    background: var(--bg-secondary);
}

.tags-cloud {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
}

.tag-link {
    display: inline-block;
    padding: 8px 20px;
    background: var(--bg-card);
    color: var(--text-secondary);
    border-radius: 24px;
    font-size: 0.88rem;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.tag-link:hover {
    background: var(--secondary);
    color: var(--bg-primary);
    border-color: var(--secondary);
    transform: translateY(-2px);
}

/* ============ 页脚 ============ */
.site-footer {
    background: var(--primary);
    padding: 56px 0 0;
    border-top: 1px solid var(--border-color);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.88rem;
    line-height: 1.7;
    margin-top: 12px;
}

.footer-col h4 {
    color: var(--secondary);
    font-size: 1rem;
    margin-bottom: 16px;
    font-weight: 600;
}

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

.footer-col li {
    margin-bottom: 8px;
}

.footer-col a {
    color: var(--text-secondary);
    font-size: 0.88rem;
    transition: var(--transition);
}

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

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding: 20px 0;
    text-align: center;
    font-size: 0.82rem;
    color: var(--text-secondary);
}

.footer-bottom p {
    margin-bottom: 4px;
}

/* ============ 面包屑 ============ */
.breadcrumb {
    margin-top: 68px;
    padding: 16px 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.breadcrumb-list {
    display: flex;
    list-style: none;
    gap: 8px;
    font-size: 0.88rem;
}

.breadcrumb-list li::after {
    content: '>';
    margin-left: 8px;
    color: var(--text-secondary);
}

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

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

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

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

/* ============ 分类页头部 ============ */
.category-hero {
    position: relative;
    padding: 64px 0;
    background: linear-gradient(135deg, var(--bg-primary), var(--primary-light));
    overflow: hidden;
}

.category-hero .hero-bg {
    opacity: 0.2;
}

.category-hero h1 {
    font-size: 2.4rem;
    font-weight: 800;
    color: var(--secondary);
    margin-bottom: 12px;
    position: relative;
    z-index: 2;
}

.category-hero .subtitle {
    font-size: 1.05rem;
    color: var(--text-secondary);
    position: relative;
    z-index: 2;
}

/* ============ 文章内容 ============ */
.article-section {
    padding: 56px 0;
}

.article-content {
    max-width: 860px;
    margin: 0 auto;
}

.article-content h2 {
    font-size: 1.6rem;
    color: var(--secondary);
    margin: 36px 0 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--border-color);
}

.article-content h3 {
    font-size: 1.25rem;
    color: var(--accent-light);
    margin: 28px 0 12px;
}

.article-content p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.9;
    font-size: 0.98rem;
}

.article-content img {
    border-radius: var(--border-radius);
    margin: 24px 0;
    box-shadow: var(--shadow);
}

.article-content a {
    color: var(--accent-light);
    border-bottom: 1px dashed var(--accent-light);
}

.article-content a:hover {
    color: var(--secondary);
    border-bottom-color: var(--secondary);
}

/* ============ 下载页 ============ */
.download-hero {
    margin-top: 68px;
    padding: 80px 0;
    background: linear-gradient(135deg, var(--bg-primary), #1a1040, var(--bg-secondary));
    text-align: center;
}

.download-hero h1 {
    font-size: 2.4rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--secondary), var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
}

.download-hero p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-bottom: 36px;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.dl-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 36px;
    border-radius: 30px;
    font-size: 1rem;
    font-weight: 600;
    transition: var(--transition);
    color: #fff;
}

.dl-btn-primary {
    background: linear-gradient(135deg, var(--secondary), var(--accent));
}

.dl-btn-secondary {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
}

.dl-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(212, 168, 67, 0.3);
    color: #fff;
}

.download-phone {
    max-width: 300px;
    margin: 40px auto 0;
}

.download-phone img {
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
}

/* ============ 返回顶部 ============ */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    background: var(--secondary);
    color: var(--bg-primary);
    border: none;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--accent);
    transform: translateY(-3px);
}

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

@media (max-width: 768px) {
    html { font-size: 15px; }

    .nav-menu {
        display: none;
        position: fixed;
        top: 68px;
        left: 0;
        right: 0;
        background: rgba(10, 15, 26, 0.98);
        flex-direction: column;
        padding: 16px;
        border-bottom: 1px solid var(--border-color);
    }

    .nav-menu.open { display: flex; }

    .menu-toggle { display: block; }

    .nav-download { display: none; }

    .hero-content h1 { font-size: 1.8rem; }
    .hero-content { padding: 48px 24px; }
    .hero-section { min-height: 400px; }

    .featured-wrapper { grid-template-columns: 1fr; }
    .about-grid { grid-template-columns: 1fr; }
    .video-grid { grid-template-columns: repeat(2, 1fr); }
    .credentials-grid { grid-template-columns: repeat(2, 1fr); }
    .support-grid { grid-template-columns: 1fr; }
    .reviews-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }

    .section-title h2 { font-size: 1.5rem; }
    .content-section { padding: 48px 0; }

    .category-hero h1 { font-size: 1.8rem; }
    .category-hero { padding: 40px 0; }
}

@media (max-width: 480px) {
    .video-grid { grid-template-columns: 1fr; }
    .credentials-grid { grid-template-columns: 1fr; }
    .payment-icons { gap: 16px; }
    .download-buttons { flex-direction: column; align-items: center; }
}