/* =============================================
   母狗官网 - 主样式文件
   版本: 1.0.0
   作者: 母狗官网 设计团队
   ============================================= */

/* ---- CSS变量 ---- */
:root {
    --primary: #E8196A;
    --primary-dark: #C0145A;
    --secondary: #FF6B35;
    --accent: #7C3AED;
    --accent-light: #A78BFA;
    --bg-dark: #0D0D1A;
    --bg-card: #16162A;
    --bg-card2: #1E1E35;
    --text-primary: #F0F0F8;
    --text-secondary: #A0A0C0;
    --text-muted: #6B6B8A;
    --border: #2A2A45;
    --gradient-main: linear-gradient(135deg, #E8196A 0%, #FF6B35 100%);
    --gradient-accent: linear-gradient(135deg, #7C3AED 0%, #E8196A 100%);
    --gradient-dark: linear-gradient(180deg, #0D0D1A 0%, #16162A 100%);
    --shadow-card: 0 4px 24px rgba(232,25,106,0.12);
    --shadow-hover: 0 8px 40px rgba(232,25,106,0.25);
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 20px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --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-dark);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; transition: var(--transition); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: var(--font-main); }
input, textarea, select { font-family: var(--font-main); }

/* ---- 滚动条 ---- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 3px; }

/* ---- 容器 ---- */
.container { max-width: 1280px; margin: 0 auto; padding: 0 20px; }
.container-fluid { width: 100%; padding: 0 20px; }

/* ---- 顶部公告栏 ---- */
.top-bar {
    background: var(--gradient-main);
    padding: 8px 0;
    text-align: center;
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.5px;
}
.top-bar a { color: #fff; opacity: 0.9; }
.top-bar a:hover { opacity: 1; text-decoration: underline; }

/* ---- 导航栏 ---- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(13,13,26,0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
}
.header-inner {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 14px 0;
}
.site-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}
.site-logo img.logo-img {
    height: 44px;
    width: auto;
    object-fit: contain;
}
.site-logo img.favicon-img {
    height: 32px;
    width: 32px;
    object-fit: contain;
    border-radius: 8px;
}
.logo-text {
    font-size: 20px;
    font-weight: 800;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    white-space: nowrap;
}
.main-nav {
    display: flex;
    align-items: center;
    gap: 4px;
    flex: 1;
}
.main-nav a {
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    white-space: nowrap;
    transition: var(--transition);
}
.main-nav a:hover, .main-nav a.active {
    color: var(--text-primary);
    background: rgba(232,25,106,0.12);
    color: var(--primary);
}
.header-search {
    display: flex;
    align-items: center;
    background: var(--bg-card2);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 8px 16px;
    gap: 8px;
    min-width: 200px;
    transition: var(--transition);
}
.header-search:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(232,25,106,0.15);
}
.header-search input {
    background: none;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-size: 14px;
    width: 100%;
}
.header-search input::placeholder { color: var(--text-muted); }
.search-btn {
    color: var(--text-muted);
    font-size: 16px;
    transition: var(--transition);
    padding: 0;
    background: none;
    border: none;
    cursor: pointer;
}
.search-btn:hover { color: var(--primary); }
.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}
.btn-login {
    padding: 8px 20px;
    border-radius: 24px;
    border: 1px solid var(--primary);
    color: var(--primary);
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
}
.btn-login:hover {
    background: var(--primary);
    color: #fff;
}
.btn-register {
    padding: 8px 20px;
    border-radius: 24px;
    background: var(--gradient-main);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
}
.btn-register:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(232,25,106,0.4);
}
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    cursor: pointer;
}
.mobile-menu-btn span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

/* ---- 面包屑 ---- */
.breadcrumb {
    padding: 12px 0;
    font-size: 13px;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb span { margin: 0 6px; }
.breadcrumb .current { color: var(--text-secondary); }

/* ---- Hero区域 ---- */
.hero-section {
    position: relative;
    min-height: 580px;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: var(--bg-dark);
}
.hero-bg {
    position: absolute;
    inset: 0;
    background-image: url('../images/hero_banner.jpg');
    background-size: cover;
    background-position: center;
    filter: brightness(0.35);
    z-index: 0;
}
.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(13,13,26,0.8) 0%, rgba(232,25,106,0.15) 100%);
    z-index: 1;
}
.hero-content {
    position: relative;
    z-index: 2;
    padding: 80px 0;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(232,25,106,0.15);
    border: 1px solid rgba(232,25,106,0.3);
    border-radius: 24px;
    padding: 6px 16px;
    font-size: 13px;
    color: var(--primary);
    margin-bottom: 20px;
}
.hero-badge::before {
    content: '';
    display: inline-block;
    width: 6px;
    height: 6px;
    background: var(--primary);
    border-radius: 50%;
    animation: pulse 1.5s infinite;
}
@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.3); }
}
.hero-title {
    font-size: clamp(32px, 5vw, 60px);
    font-weight: 900;
    line-height: 1.15;
    margin-bottom: 20px;
    letter-spacing: -0.5px;
}
.hero-title .highlight {
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-desc {
    font-size: 17px;
    color: var(--text-secondary);
    max-width: 560px;
    margin-bottom: 36px;
    line-height: 1.8;
}
.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    background: var(--gradient-main);
    color: #fff;
    border-radius: 32px;
    font-size: 16px;
    font-weight: 700;
    transition: var(--transition);
    box-shadow: 0 4px 20px rgba(232,25,106,0.35);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(232,25,106,0.5);
}
.btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border: 2px solid rgba(255,255,255,0.25);
    color: #fff;
    border-radius: 32px;
    font-size: 16px;
    font-weight: 600;
    transition: var(--transition);
    backdrop-filter: blur(8px);
}
.btn-outline:hover {
    border-color: var(--primary);
    background: rgba(232,25,106,0.1);
}
.hero-stats {
    display: flex;
    gap: 40px;
    margin-top: 48px;
    flex-wrap: wrap;
}
.hero-stat-item { text-align: left; }
.hero-stat-num {
    font-size: 28px;
    font-weight: 800;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-stat-label { font-size: 13px; color: var(--text-muted); margin-top: 2px; }

/* ---- 区块标题 ---- */
.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 28px;
}
.section-title {
    font-size: 22px;
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: 10px;
}
.section-title::before {
    content: '';
    display: block;
    width: 4px;
    height: 22px;
    background: var(--gradient-main);
    border-radius: 2px;
    flex-shrink: 0;
}
.section-more {
    font-size: 14px;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 4px;
}
.section-more:hover { opacity: 0.8; }
.section { padding: 48px 0; }
.section-alt { background: var(--bg-card); }

/* ---- 视频卡片 ---- */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 20px;
}
.video-grid-5 {
    grid-template-columns: repeat(5, 1fr);
}
.video-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
    cursor: pointer;
    border: 1px solid var(--border);
}
.video-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(232,25,106,0.3);
}
.video-thumb {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
    background: var(--bg-card2);
}
.video-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.video-card:hover .video-thumb img { transform: scale(1.06); }
.video-play-btn {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0,0,0,0.3);
    opacity: 0;
    transition: var(--transition);
}
.video-card:hover .video-play-btn { opacity: 1; }
.play-icon {
    width: 48px;
    height: 48px;
    background: rgba(232,25,106,0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: #fff;
    backdrop-filter: blur(4px);
}
.video-duration {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background: rgba(0,0,0,0.75);
    color: #fff;
    font-size: 12px;
    padding: 2px 8px;
    border-radius: 4px;
    font-weight: 600;
}
.video-tag {
    position: absolute;
    top: 8px;
    left: 8px;
    background: var(--gradient-main);
    color: #fff;
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 4px;
    font-weight: 700;
}
.video-info { padding: 12px 14px 14px; }
.video-title {
    font-size: 14px;
    font-weight: 600;
    line-height: 1.5;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    color: var(--text-primary);
}
.video-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 12px;
    color: var(--text-muted);
}
.video-meta span { display: flex; align-items: center; gap: 3px; }
.video-author {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 4px;
}
.author-avatar {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--gradient-main);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    color: #fff;
    flex-shrink: 0;
}

/* ---- 大视频卡片 ---- */
.video-card-lg {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border);
    transition: var(--transition);
}
.video-card-lg:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}
.video-card-lg .video-thumb { aspect-ratio: 16/9; }
.video-card-lg .video-info { padding: 20px; }
.video-card-lg .video-title { font-size: 16px; margin-bottom: 10px; }

/* ---- 分类标签 ---- */
.category-tabs {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}
.cat-tab {
    padding: 8px 20px;
    border-radius: 24px;
    font-size: 14px;
    font-weight: 500;
    background: var(--bg-card2);
    color: var(--text-secondary);
    border: 1px solid var(--border);
    cursor: pointer;
    transition: var(--transition);
}
.cat-tab:hover, .cat-tab.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

/* ---- 功能模块卡片 ---- */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.feature-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 28px;
    border: 1px solid var(--border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-main);
    opacity: 0;
    transition: var(--transition);
}
.feature-card:hover::before { opacity: 1; }
.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(232,25,106,0.2);
}
.feature-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius);
    background: rgba(232,25,106,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 16px;
    transition: var(--transition);
}
.feature-card:hover .feature-icon {
    background: var(--gradient-main);
}
.feature-title {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 10px;
}
.feature-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ---- 专家展示 ---- */
.expert-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.expert-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 24px;
    text-align: center;
    border: 1px solid var(--border);
    transition: var(--transition);
}
.expert-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(232,25,106,0.3);
}
.expert-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    margin: 0 auto 14px;
    background: var(--gradient-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: #fff;
    border: 3px solid rgba(232,25,106,0.3);
}
.expert-name {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 4px;
}
.expert-role {
    font-size: 13px;
    color: var(--primary);
    margin-bottom: 10px;
    font-weight: 500;
}
.expert-desc {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 14px;
}
.expert-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    justify-content: center;
    margin-bottom: 14px;
}
.expert-tag {
    font-size: 11px;
    padding: 3px 10px;
    background: rgba(124,58,237,0.15);
    color: var(--accent-light);
    border-radius: 12px;
    border: 1px solid rgba(124,58,237,0.2);
}
.expert-actions {
    display: flex;
    gap: 8px;
    justify-content: center;
}
.btn-sm {
    padding: 6px 14px;
    border-radius: 16px;
    font-size: 12px;
    font-weight: 600;
    transition: var(--transition);
}
.btn-sm-primary {
    background: var(--gradient-main);
    color: #fff;
}
.btn-sm-outline {
    border: 1px solid var(--border);
    color: var(--text-secondary);
}
.btn-sm-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
}

/* ---- 评价区域 ---- */
.review-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.review-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 20px;
    border: 1px solid var(--border);
    transition: var(--transition);
}
.review-card:hover {
    border-color: rgba(232,25,106,0.25);
    box-shadow: var(--shadow-card);
}
.review-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}
.reviewer-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--gradient-main);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: #fff;
    flex-shrink: 0;
}
.reviewer-name { font-size: 15px; font-weight: 600; }
.reviewer-meta { font-size: 12px; color: var(--text-muted); margin-top: 2px; }
.review-stars { color: #FFB800; font-size: 14px; margin-bottom: 8px; }
.review-text { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }
.review-date { font-size: 12px; color: var(--text-muted); margin-top: 10px; }

/* ---- FAQ ---- */
.faq-list { display: flex; flex-direction: column; gap: 12px; }
.faq-item {
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    overflow: hidden;
    transition: var(--transition);
}
.faq-item.open { border-color: rgba(232,25,106,0.3); }
.faq-question {
    padding: 18px 20px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    user-select: none;
}
.faq-question:hover { color: var(--primary); }
.faq-arrow {
    font-size: 18px;
    transition: transform 0.3s ease;
    color: var(--text-muted);
    flex-shrink: 0;
}
.faq-item.open .faq-arrow { transform: rotate(180deg); color: var(--primary); }
.faq-answer {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.3s ease;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
}
.faq-item.open .faq-answer {
    max-height: 300px;
    padding: 0 20px 18px;
}

/* ---- 合作品牌 ---- */
.partner-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-items: center;
    justify-content: center;
}
.partner-item {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 16px 28px;
    border: 1px solid var(--border);
    font-size: 15px;
    font-weight: 600;
    color: var(--text-secondary);
    transition: var(--transition);
    min-width: 120px;
    text-align: center;
}
.partner-item:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
}

/* ---- 联系区域 ---- */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}
.contact-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 28px;
    border: 1px solid var(--border);
}
.contact-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
}
.contact-item:last-child { border-bottom: none; }
.contact-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: rgba(232,25,106,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
}
.contact-label { font-size: 12px; color: var(--text-muted); margin-bottom: 2px; }
.contact-value { color: var(--text-primary); font-weight: 500; }
.qrcode-grid {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-top: 16px;
}
.qrcode-item { text-align: center; }
.qrcode-item img {
    width: 120px;
    height: 120px;
    border-radius: var(--radius-sm);
    border: 2px solid var(--border);
}
.qrcode-label {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 6px;
}

/* ---- 社交分享 ---- */
.share-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}
.share-label { font-size: 14px; color: var(--text-muted); }
.share-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    transition: var(--transition);
    border: 1px solid var(--border);
    color: var(--text-secondary);
}
.share-btn:hover { transform: translateY(-1px); }
.share-wechat:hover { border-color: #07C160; color: #07C160; background: rgba(7,193,96,0.08); }
.share-weibo:hover { border-color: #E6162D; color: #E6162D; background: rgba(230,22,45,0.08); }
.share-douyin:hover { border-color: #FE2C55; color: #FE2C55; background: rgba(254,44,85,0.08); }
.share-bilibili:hover { border-color: #00A1D6; color: #00A1D6; background: rgba(0,161,214,0.08); }

/* ---- 页脚 ---- */
.site-footer {
    background: #080814;
    border-top: 1px solid var(--border);
    padding: 48px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--border);
}
.footer-brand .logo-text { font-size: 22px; margin-bottom: 12px; display: block; }
.footer-desc {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: 20px;
}
.footer-social {
    display: flex;
    gap: 10px;
}
.social-link {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: var(--bg-card2);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    color: var(--text-muted);
    transition: var(--transition);
}
.social-link:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
    transform: translateY(-2px);
}
.footer-col-title {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a {
    font-size: 14px;
    color: var(--text-muted);
    transition: var(--transition);
}
.footer-links a:hover { color: var(--primary); padding-left: 4px; }
.footer-bottom {
    padding: 20px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 13px;
    color: var(--text-muted);
}
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--primary); }
.footer-logo-bottom {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
}
.footer-logo-bottom img { height: 36px; width: auto; }

/* ---- 视频播放页 ---- */
.player-section {
    background: #000;
    padding: 0;
}
.video-player-wrap {
    max-width: 960px;
    margin: 0 auto;
    background: #000;
}
.video-player-wrap video,
.video-player-wrap iframe {
    width: 100%;
    aspect-ratio: 16/9;
    display: block;
    border: none;
}
.player-info-section { padding: 32px 0; }
.player-title {
    font-size: 22px;
    font-weight: 800;
    margin-bottom: 12px;
}
.player-meta {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 20px;
}
.player-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}
.action-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    border-radius: 24px;
    font-size: 14px;
    font-weight: 500;
    background: var(--bg-card2);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    transition: var(--transition);
    cursor: pointer;
}
.action-btn:hover, .action-btn.active {
    background: rgba(232,25,106,0.1);
    border-color: var(--primary);
    color: var(--primary);
}
.player-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 16px 20px;
    border: 1px solid var(--border);
}

/* ---- 页面标题区 ---- */
.page-hero {
    padding: 48px 0 36px;
    border-bottom: 1px solid var(--border);
    background: linear-gradient(180deg, rgba(232,25,106,0.05) 0%, transparent 100%);
}
.page-hero h1 {
    font-size: 32px;
    font-weight: 900;
    margin-bottom: 10px;
}
.page-hero p {
    font-size: 16px;
    color: var(--text-secondary);
}

/* ---- 分页 ---- */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 32px 0;
}
.page-btn {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 500;
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}
.page-btn:hover, .page-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

/* ---- 加载动画 ---- */
.skeleton {
    background: linear-gradient(90deg, var(--bg-card) 25%, var(--bg-card2) 50%, var(--bg-card) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: var(--radius-sm);
}
@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ---- 移动端菜单 ---- */
.mobile-nav {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(13,13,26,0.98);
    z-index: 9999;
    flex-direction: column;
    padding: 80px 24px 24px;
    overflow-y: auto;
}
.mobile-nav.open { display: flex; }
.mobile-nav-close {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 24px;
    color: var(--text-primary);
    cursor: pointer;
    padding: 8px;
}
.mobile-nav a {
    padding: 16px 0;
    font-size: 18px;
    font-weight: 600;
    border-bottom: 1px solid var(--border);
    color: var(--text-primary);
}
.mobile-nav a:hover { color: var(--primary); }

/* ---- 通知条 ---- */
.notice-bar {
    background: rgba(124,58,237,0.1);
    border: 1px solid rgba(124,58,237,0.2);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    font-size: 14px;
    color: var(--accent-light);
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 24px;
}

/* ---- 响应式 ---- */
@media (max-width: 1200px) {
    .video-grid-5 { grid-template-columns: repeat(4, 1fr); }
    .expert-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 1024px) {
    .feature-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .video-grid-5 { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 768px) {
    .main-nav { display: none; }
    .header-search { display: none; }
    .mobile-menu-btn { display: flex; }
    .hero-section { min-height: 420px; }
    .hero-content { padding: 48px 0; }
    .hero-stats { gap: 24px; }
    .video-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .video-grid-5 { grid-template-columns: repeat(2, 1fr); }
    .feature-grid { grid-template-columns: 1fr; }
    .expert-grid { grid-template-columns: repeat(2, 1fr); }
    .review-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 24px; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .header-actions .btn-login { display: none; }
    .section { padding: 32px 0; }
}
@media (max-width: 480px) {
    .video-grid { grid-template-columns: 1fr; }
    .video-grid-5 { grid-template-columns: 1fr; }
    .expert-grid { grid-template-columns: 1fr; }
    .hero-actions { flex-direction: column; }
    .btn-primary, .btn-outline { width: 100%; justify-content: center; }
}

/* ---- 工具类 ---- */
.text-gradient {
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}
.badge-hot { background: rgba(232,25,106,0.15); color: var(--primary); }
.badge-new { background: rgba(255,107,53,0.15); color: var(--secondary); }
.badge-ai { background: rgba(124,58,237,0.15); color: var(--accent-light); }
.badge-live {
    background: var(--primary);
    color: #fff;
    animation: pulse-badge 2s infinite;
}
@keyframes pulse-badge {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}
.mt-0 { margin-top: 0 !important; }
.mb-0 { margin-bottom: 0 !important; }
.mt-8 { margin-top: 8px; }
.mb-8 { margin-bottom: 8px; }
.mt-16 { margin-top: 16px; }
.mb-16 { margin-bottom: 16px; }
.mt-24 { margin-top: 24px; }
.mb-24 { margin-bottom: 24px; }
.mt-32 { margin-top: 32px; }
.mb-32 { margin-bottom: 32px; }
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.text-primary-color { color: var(--primary); }
.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.gap-24 { gap: 24px; }
.w-full { width: 100%; }
.hidden { display: none !important; }

/* ---- 直播风格横幅 ---- */
.live-banner {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--bg-card);
    border: 1px solid var(--border);
}
.live-banner img {
    width: 100%;
    height: 240px;
    object-fit: cover;
    opacity: 0.7;
}
.live-banner-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(13,13,26,0.7) 0%, rgba(232,25,106,0.2) 100%);
    display: flex;
    align-items: center;
    padding: 24px;
}
.live-info { flex: 1; }
.live-title { font-size: 20px; font-weight: 800; margin-bottom: 8px; }
.live-desc { font-size: 14px; color: var(--text-secondary); margin-bottom: 16px; }
.live-stats {
    display: flex;
    gap: 16px;
    font-size: 13px;
    color: var(--text-muted);
}

/* ---- 搜索弹窗 ---- */
.search-modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.8);
    z-index: 9998;
    align-items: flex-start;
    justify-content: center;
    padding-top: 80px;
}
.search-modal.open { display: flex; }
.search-modal-inner {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 24px;
    width: 100%;
    max-width: 640px;
    border: 1px solid var(--border);
}
.search-modal-input {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--bg-card2);
    border: 2px solid var(--primary);
    border-radius: 32px;
    padding: 12px 20px;
    margin-bottom: 16px;
}
.search-modal-input input {
    flex: 1;
    background: none;
    border: none;
    outline: none;
    font-size: 16px;
    color: var(--text-primary);
}
.search-hot-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.search-hot-tag {
    padding: 6px 14px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 16px;
    font-size: 13px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}
.search-hot-tag:hover { border-color: var(--primary); color: var(--primary); }