/* 
 * 糖心vlog - 原创CSS样式
 * 设计理念：渐变糖果色系 + 玻璃拟态 + 流畅动画
 * 配色方案：珊瑚粉、薄荷绿、柔和紫、暖橙色、深空灰
 */

/* ========== CSS变量定义 ========== */
:root {
    /* 主色调 - 糖果渐变系 */
    --primary-coral: #FF6B8A;
    --primary-mint: #4ECDC4;
    --primary-lavender: #9B7EDE;
    --accent-orange: #FFB347;
    --accent-gold: #F7D794;
    
    /* 文字颜色 */
    --text-primary: #2D3436;
    --text-secondary: #636E72;
    --text-light: #B2BEC3;
    --text-white: #FFFFFF;
    
    /* 背景色 */
    --bg-dark: #1A1A2E;
    --bg-darker: #16162A;
    --bg-card: rgba(255, 255, 255, 0.08);
    --bg-glass: rgba(255, 255, 255, 0.12);
    --bg-gradient-start: #1A1A2E;
    --bg-gradient-end: #2D2D44;
    
    /* 边框与阴影 */
    --border-glass: rgba(255, 255, 255, 0.18);
    --shadow-soft: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 40px rgba(255, 107, 138, 0.2);
    --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.25);
    
    /* 圆角 */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    
    /* 过渡 */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

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

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

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-darker) 100%);
    color: var(--text-white);
    line-height: 1.7;
    min-height: 100vh;
    overflow-x: hidden;
}

/* 背景装饰 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at 20% 20%, rgba(255, 107, 138, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(78, 205, 196, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(155, 126, 222, 0.05) 0%, transparent 60%);
    pointer-events: none;
    z-index: -1;
}

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

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

ul, ol {
    list-style: none;
}

/* ========== 容器布局 ========== */
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 80px 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 48px;
    background: linear-gradient(135deg, var(--primary-coral), var(--primary-lavender));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-coral), var(--primary-mint));
    border-radius: 2px;
}

/* ========== 导航栏 ========== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 16px 0;
    background: rgba(26, 26, 46, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-glass);
    transition: var(--transition-smooth);
}

.navbar.scrolled {
    padding: 12px 0;
    background: rgba(26, 26, 46, 0.95);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-coral), var(--accent-orange));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-icon {
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, var(--primary-coral), var(--primary-lavender));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: white;
    -webkit-text-fill-color: white;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    padding: 10px 18px;
    border-radius: var(--radius-md);
    font-weight: 500;
    color: var(--text-light);
    position: relative;
    overflow: hidden;
}

.nav-link::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--primary-coral), var(--primary-lavender));
    opacity: 0;
    transition: var(--transition-fast);
    border-radius: var(--radius-md);
}

.nav-link:hover {
    color: var(--text-white);
}

.nav-link:hover::before {
    opacity: 0.15;
}

.nav-link.active {
    color: var(--text-white);
    background: var(--bg-glass);
}

.download-btn {
    padding: 12px 28px;
    background: linear-gradient(135deg, var(--primary-coral), var(--primary-lavender));
    border-radius: var(--radius-lg);
    font-weight: 600;
    color: white;
    box-shadow: 0 4px 20px rgba(255, 107, 138, 0.4);
    transition: var(--transition-smooth);
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(255, 107, 138, 0.5);
}

/* 移动端菜单按钮 */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    padding: 8px;
    cursor: pointer;
    background: none;
    border: none;
}

.menu-toggle span {
    width: 28px;
    height: 3px;
    background: var(--text-white);
    border-radius: 2px;
    transition: var(--transition-fast);
}

/* ========== 欢迎区域 ========== */
.hero {
    padding: 160px 0 100px;
    text-align: center;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255, 107, 138, 0.15) 0%, transparent 70%);
    pointer-events: none;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 24px;
    line-height: 1.2;
}

.hero-title span {
    background: linear-gradient(135deg, var(--primary-coral), var(--accent-orange), var(--primary-mint));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 1.15rem;
    color: var(--text-light);
    max-width: 800px;
    margin: 0 auto 40px;
    line-height: 1.9;
}

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

.btn-primary {
    padding: 16px 40px;
    background: linear-gradient(135deg, var(--primary-coral), var(--primary-lavender));
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 1.1rem;
    color: white;
    box-shadow: var(--shadow-glow);
    transition: var(--transition-smooth);
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 12px 40px rgba(255, 107, 138, 0.5);
}

.btn-secondary {
    padding: 16px 40px;
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--text-white);
    backdrop-filter: blur(10px);
    transition: var(--transition-smooth);
    cursor: pointer;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.18);
    transform: translateY(-3px);
}

/* ========== 精选视频区 ========== */
.featured-video {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-xl);
    padding: 48px;
    backdrop-filter: blur(20px);
}

.video-wrapper {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 32px;
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, var(--bg-darker), var(--bg-dark));
}

.featured-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-lg);
}

.payment-img {
    max-width: 100%;
    height: auto;
}

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

/* Logo 图片样式 */
.logo img {
    height: 40px;
    width: auto;
}

.video-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(255, 107, 138, 0.1), rgba(155, 126, 222, 0.1));
}

.play-button {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-coral), var(--primary-lavender));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-smooth);
    box-shadow: 0 8px 32px rgba(255, 107, 138, 0.4);
}

.play-button::after {
    content: '';
    width: 0;
    height: 0;
    border-left: 24px solid white;
    border-top: 14px solid transparent;
    border-bottom: 14px solid transparent;
    margin-left: 6px;
}

.play-button:hover {
    transform: scale(1.1);
    box-shadow: 0 12px 48px rgba(255, 107, 138, 0.6);
}

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

.video-info p {
    color: var(--text-light);
    line-height: 1.8;
}

/* ========== 关于我们 ========== */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h3 {
    font-size: 1.8rem;
    margin-bottom: 24px;
    color: var(--text-white);
}

.about-text p {
    color: var(--text-light);
    margin-bottom: 20px;
    line-height: 1.9;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-top: 40px;
}

.stat-item {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 24px;
    text-align: center;
    backdrop-filter: blur(10px);
    transition: var(--transition-smooth);
}

.stat-item:hover {
    transform: translateY(-4px);
    background: rgba(255, 255, 255, 0.15);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-coral), var(--primary-mint));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--text-light);
    font-size: 0.95rem;
    margin-top: 8px;
}

.about-visual {
    position: relative;
}

.about-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-xl);
    padding: 48px;
    backdrop-filter: blur(20px);
    position: relative;
    overflow: hidden;
}

.about-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 107, 138, 0.08) 0%, transparent 50%);
    pointer-events: none;
}

/* ========== 热门视频卡片 ========== */
.video-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}

.video-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    overflow: hidden;
    backdrop-filter: blur(20px);
    transition: var(--transition-smooth);
    position: relative;
}

.video-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 107, 138, 0.1), rgba(155, 126, 222, 0.1));
    opacity: 0;
    transition: var(--transition-smooth);
    pointer-events: none;
}

.video-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-card);
    border-color: rgba(255, 107, 138, 0.3);
}

.video-card:hover::before {
    opacity: 1;
}

.video-thumb {
    position: relative;
    aspect-ratio: 16/10;
    overflow: hidden;
    background: linear-gradient(135deg, var(--bg-darker), var(--bg-dark));
}

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

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

.video-duration {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: rgba(0, 0, 0, 0.75);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
}

.video-content {
    padding: 20px;
}

.video-title {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-white);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.5;
}

.video-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 12px;
    font-size: 0.9rem;
}

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

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

.video-desc {
    color: var(--text-light);
    font-size: 0.9rem;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ========== 资质认证 ========== */
.credentials-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}

.credential-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    text-align: center;
    backdrop-filter: blur(20px);
    transition: var(--transition-smooth);
}

.credential-card:hover {
    transform: translateY(-6px);
    background: var(--bg-glass);
}

.credential-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--primary-coral), var(--primary-lavender));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
}

.credential-card h4 {
    font-size: 1.15rem;
    margin-bottom: 12px;
    color: var(--text-white);
}

.credential-card p {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ========== 支付方式 ========== */
.payment-methods {
    display: flex;
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
}

.payment-item {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 24px 40px;
    display: flex;
    align-items: center;
    gap: 16px;
    backdrop-filter: blur(20px);
    transition: var(--transition-smooth);
}

.payment-item:hover {
    transform: translateY(-4px);
    background: var(--bg-glass);
}

.payment-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary-mint), var(--primary-lavender));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
}

.payment-item span {
    font-weight: 600;
    font-size: 1.05rem;
}

/* ========== 客户支持 ========== */
.support-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.support-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 36px;
    text-align: center;
    backdrop-filter: blur(20px);
    transition: var(--transition-smooth);
}

.support-card:hover {
    transform: translateY(-6px);
    border-color: var(--primary-coral);
}

.support-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 24px;
    background: linear-gradient(135deg, var(--primary-coral), var(--accent-orange));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
}

.support-card h4 {
    font-size: 1.2rem;
    margin-bottom: 16px;
    color: var(--text-white);
}

.support-card p {
    color: var(--text-light);
    line-height: 1.8;
}

/* ========== 负责任观影 ========== */
.responsible-content {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-xl);
    padding: 48px;
    backdrop-filter: blur(20px);
}

.responsible-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

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

.responsible-item h4 {
    font-size: 1.15rem;
    margin-bottom: 16px;
    color: var(--primary-coral);
}

.responsible-item p {
    color: var(--text-light);
    line-height: 1.8;
}

/* ========== FAQ手风琴 ========== */
.faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    margin-bottom: 16px;
    overflow: hidden;
    backdrop-filter: blur(20px);
    transition: var(--transition-smooth);
}

.faq-item:hover {
    border-color: rgba(255, 107, 138, 0.3);
}

.faq-question {
    padding: 24px 28px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-weight: 600;
    font-size: 1.05rem;
    color: var(--text-white);
    transition: var(--transition-fast);
}

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

.faq-icon {
    width: 32px;
    height: 32px;
    background: var(--bg-glass);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
    flex-shrink: 0;
}

.faq-icon::before {
    content: '+';
    font-size: 1.4rem;
    font-weight: 300;
    color: var(--primary-coral);
}

.faq-item.active .faq-icon {
    background: linear-gradient(135deg, var(--primary-coral), var(--primary-lavender));
    transform: rotate(45deg);
}

.faq-item.active .faq-icon::before {
    color: white;
}

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

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

.faq-answer-content {
    padding: 0 28px 24px;
    color: var(--text-light);
    line-height: 1.9;
}

/* ========== 用户评价 ========== */
.reviews-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.review-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 32px;
    backdrop-filter: blur(20px);
    transition: var(--transition-smooth);
    position: relative;
}

.review-card::before {
    content: '"';
    position: absolute;
    top: 20px;
    right: 28px;
    font-size: 4rem;
    font-family: Georgia, serif;
    color: var(--primary-coral);
    opacity: 0.2;
    line-height: 1;
}

.review-card:hover {
    transform: translateY(-6px);
    border-color: rgba(78, 205, 196, 0.3);
}

.review-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.review-avatar {
    width: 52px;
    height: 52px;
    background: linear-gradient(135deg, var(--primary-mint), var(--primary-lavender));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.2rem;
    color: white;
}

.review-info h5 {
    font-size: 1.05rem;
    color: var(--text-white);
    margin-bottom: 4px;
}

.review-info span {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.review-rating {
    color: var(--accent-gold);
    font-size: 1rem;
    margin-bottom: 16px;
}

.review-text {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 16px;
}

.review-date {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ========== 热门标签 ========== */
.tags-cloud {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
}

.tag-link {
    padding: 12px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    font-size: 0.95rem;
    color: var(--text-light);
    backdrop-filter: blur(10px);
    transition: var(--transition-smooth);
}

.tag-link:hover {
    background: linear-gradient(135deg, var(--primary-coral), var(--primary-lavender));
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(255, 107, 138, 0.3);
}

/* ========== 页脚 ========== */
.footer {
    background: var(--bg-darker);
    border-top: 1px solid var(--border-glass);
    padding: 80px 0 32px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: 60px;
    margin-bottom: 60px;
}

.footer-brand h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--primary-coral), var(--accent-orange));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

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

.social-link {
    width: 44px;
    height: 44px;
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
}

.social-link:hover {
    background: linear-gradient(135deg, var(--primary-coral), var(--primary-lavender));
    transform: translateY(-3px);
}

.footer-column h4 {
    font-size: 1.1rem;
    margin-bottom: 24px;
    color: var(--text-white);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.footer-links a {
    color: var(--text-light);
    font-size: 0.95rem;
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--primary-coral);
    padding-left: 8px;
}

.footer-bottom {
    border-top: 1px solid var(--border-glass);
    padding-top: 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-copyright {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-legal {
    display: flex;
    gap: 24px;
}

.footer-legal a {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

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

/* ========== 面包屑导航 ========== */
.breadcrumb {
    padding: 120px 0 24px;
}

.breadcrumb-list {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.95rem;
}

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

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

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

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

/* ========== 分类页头部 ========== */
.category-header {
    text-align: center;
    padding: 40px 0 60px;
}

.category-header h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 16px;
    background: linear-gradient(135deg, var(--primary-coral), var(--primary-mint));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.category-subtitle {
    font-size: 1.2rem;
    color: var(--text-light);
}

/* ========== 文章内容 ========== */
.article-content {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-xl);
    padding: 60px;
    backdrop-filter: blur(20px);
    margin-bottom: 60px;
}

.article-content h2 {
    font-size: 1.8rem;
    margin: 40px 0 20px;
    color: var(--text-white);
    padding-left: 20px;
    border-left: 4px solid var(--primary-coral);
}

.article-content h2:first-child {
    margin-top: 0;
}

.article-content h3 {
    font-size: 1.4rem;
    margin: 32px 0 16px;
    color: var(--primary-mint);
}

.article-content p {
    color: var(--text-light);
    line-height: 2;
    margin-bottom: 20px;
}

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

.article-content a:hover {
    color: var(--primary-mint);
    border-color: var(--primary-mint);
}

.article-image {
    margin: 32px 0;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.article-image img {
    width: 100%;
}

/* ========== 返回顶部按钮 ========== */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 52px;
    height: 52px;
    background: linear-gradient(135deg, var(--primary-coral), var(--primary-lavender));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-smooth);
    box-shadow: 0 8px 24px rgba(255, 107, 138, 0.4);
    z-index: 999;
}

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

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(255, 107, 138, 0.5);
}

.back-to-top::before {
    content: '';
    width: 12px;
    height: 12px;
    border-left: 3px solid white;
    border-top: 3px solid white;
    transform: rotate(45deg) 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);
        gap: 40px;
    }
}

@media (max-width: 992px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .credentials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .support-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .responsible-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    html {
        font-size: 15px;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    /* 移动端导航 */
    .menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background: var(--bg-darker);
        flex-direction: column;
        padding: 100px 32px 32px;
        gap: 8px;
        transition: var(--transition-smooth);
        border-left: 1px solid var(--border-glass);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-link {
        width: 100%;
        padding: 16px 20px;
    }
    
    .download-btn {
        width: 100%;
        text-align: center;
        margin-top: 20px;
    }
    
    /* Hero */
    .hero {
        padding: 140px 0 80px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-primary, .btn-secondary {
        width: 100%;
        max-width: 300px;
    }
    
    /* 视频网格 */
    .video-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    /* 其他网格 */
    .credentials-grid,
    .support-grid,
    .reviews-grid {
        grid-template-columns: 1fr;
    }
    
    .payment-methods {
        flex-direction: column;
        align-items: center;
    }
    
    .payment-item {
        width: 100%;
        max-width: 320px;
        justify-content: center;
    }
    
    /* 页脚 */
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
        text-align: center;
    }
    
    .footer-social {
        justify-content: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-legal {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    /* 文章 */
    .article-content {
        padding: 32px 24px;
    }
    
    .category-header h1 {
        font-size: 2.2rem;
    }
    
    /* 返回顶部 */
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 46px;
        height: 46px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .video-grid {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
    }
    
    .tags-cloud {
        gap: 10px;
    }
    
    .tag-link {
        padding: 10px 18px;
        font-size: 0.9rem;
    }
    
    .faq-question {
        padding: 20px;
        font-size: 1rem;
    }
    
    .featured-video {
        padding: 28px 20px;
    }
}

/* ========== 动画效果 ========== */
@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-out forwards;
}

/* 滚动显示动画 */
.scroll-reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}