/* =============================================
   蘑菇视频 - 主样式文件
   品牌色: #E8336D (玫瑰红) | #FF6B35 (珊瑚橙) | #1a1a2e (深夜蓝)
   ============================================= */

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

:root {
    --brand-primary: #E8336D;
    --brand-secondary: #FF6B35;
    --brand-dark: #1a1a2e;
    --brand-darker: #0f0f1a;
    --brand-mid: #16213e;
    --brand-accent: #0f3460;
    --brand-gold: #f5a623;
    --text-light: #f0f0f0;
    --text-muted: #a0a0b8;
    --card-bg: #1e1e35;
    --border-color: rgba(232,51,109,0.2);
    --gradient-brand: linear-gradient(135deg, #E8336D, #FF6B35);
    --gradient-dark: linear-gradient(135deg, #1a1a2e, #0f3460);
    --shadow-brand: 0 8px 32px rgba(232,51,109,0.25);
    --shadow-card: 0 4px 20px rgba(0,0,0,0.4);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 30px;
    --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
}

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

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
    background-color: var(--brand-darker);
    color: var(--text-light);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

ul, ol {
    list-style: none;
}

/* === 工具类 === */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 12px;
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    text-align: center;
    color: var(--text-muted);
    font-size: 1rem;
    margin-bottom: 48px;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--gradient-brand);
    color: white;
    padding: 12px 28px;
    border-radius: var(--radius-xl);
    font-weight: 600;
    font-size: 0.95rem;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-brand);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(232,51,109,0.4);
}

.btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: transparent;
    color: var(--brand-primary);
    padding: 10px 24px;
    border-radius: var(--radius-xl);
    font-weight: 600;
    font-size: 0.9rem;
    border: 2px solid var(--brand-primary);
    cursor: pointer;
    transition: var(--transition);
}

.btn-outline:hover {
    background: var(--brand-primary);
    color: white;
}

.tag {
    display: inline-block;
    background: rgba(232,51,109,0.15);
    color: var(--brand-primary);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.78rem;
    font-weight: 600;
    border: 1px solid rgba(232,51,109,0.3);
}

/* === 顶部公告栏 === */
.top-bar {
    background: var(--gradient-brand);
    padding: 8px 0;
    text-align: center;
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.5px;
}

.top-bar a {
    color: white;
    opacity: 0.9;
}

.top-bar a:hover {
    opacity: 1;
    text-decoration: underline;
}

/* === 导航栏 === */
.navbar {
    background: rgba(26,26,46,0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

.navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    max-width: 1280px;
    margin: 0 auto;
    gap: 20px;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.navbar-brand img.nav-logo {
    height: 44px;
    width: auto;
    border-radius: var(--radius-sm);
}

.navbar-brand .brand-text {
    font-size: 1.3rem;
    font-weight: 800;
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    white-space: nowrap;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-wrap: nowrap;
}

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

.nav-menu a:hover,
.nav-menu a.active {
    color: white;
    background: rgba(232,51,109,0.15);
}

.nav-menu a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background: var(--brand-primary);
    border-radius: 2px;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.nav-login {
    padding: 8px 20px;
    background: var(--gradient-brand);
    color: white;
    border-radius: var(--radius-xl);
    font-size: 0.88rem;
    font-weight: 600;
    transition: var(--transition);
}

.nav-login:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-brand);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
    background: none;
    border: none;
}

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

/* === 搜索栏 === */
.search-bar-section {
    background: var(--brand-mid);
    border-bottom: 1px solid var(--border-color);
    padding: 14px 0;
}

.search-bar-inner {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    gap: 0;
}

.search-input-wrap {
    flex: 1;
    position: relative;
}

.search-input-wrap input {
    width: 100%;
    padding: 12px 20px 12px 48px;
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-right: none;
    border-radius: var(--radius-xl) 0 0 var(--radius-xl);
    color: var(--text-light);
    font-size: 0.95rem;
    outline: none;
    transition: var(--transition);
}

.search-input-wrap input:focus {
    border-color: var(--brand-primary);
}

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

.search-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 1.1rem;
    pointer-events: none;
}

.search-btn {
    padding: 12px 28px;
    background: var(--gradient-brand);
    color: white;
    border: none;
    border-radius: 0 var(--radius-xl) var(--radius-xl) 0;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.search-btn:hover {
    opacity: 0.9;
}

.search-tags {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
    margin-top: 10px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    padding: 0 20px;
}

.search-tags span {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.search-tags a {
    font-size: 0.8rem;
    color: var(--brand-primary);
    padding: 3px 10px;
    border: 1px solid rgba(232,51,109,0.3);
    border-radius: 20px;
    transition: var(--transition);
}

.search-tags a:hover {
    background: rgba(232,51,109,0.1);
}

/* === Hero Banner === */
.hero-section {
    position: relative;
    min-height: 560px;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: var(--brand-dark);
}

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

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.5;
}

.hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(26,26,46,0.9) 40%, rgba(232,51,109,0.15) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 1280px;
    margin: 0 auto;
    padding: 80px 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-text h1 {
    font-size: 3rem;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 16px;
}

.hero-text h1 .brand-highlight {
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-text p {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 32px;
    line-height: 1.8;
}

.hero-stats {
    display: flex;
    gap: 32px;
    margin-bottom: 36px;
}

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

.hero-stat .num {
    font-size: 1.8rem;
    font-weight: 800;
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-stat .label {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 2px;
}

.hero-btns {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-video-preview {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-brand);
    aspect-ratio: 16/9;
}

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

.hero-play-btn {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0,0,0,0.3);
    transition: var(--transition);
    cursor: pointer;
}

.hero-play-btn:hover {
    background: rgba(0,0,0,0.5);
}

.play-circle {
    width: 72px;
    height: 72px;
    background: var(--gradient-brand);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    box-shadow: 0 0 40px rgba(232,51,109,0.5);
    transition: var(--transition);
}

.hero-play-btn:hover .play-circle {
    transform: scale(1.1);
}

/* === 通用区块 === */
.section {
    padding: 80px 0;
}

.section-alt {
    background: var(--brand-mid);
}

/* === 分类导航 === */
.category-nav {
    padding: 24px 0;
    background: var(--brand-dark);
    border-bottom: 1px solid var(--border-color);
}

.category-nav-inner {
    display: flex;
    gap: 12px;
    overflow-x: auto;
    padding: 0 20px;
    max-width: 1280px;
    margin: 0 auto;
    scrollbar-width: none;
}

.category-nav-inner::-webkit-scrollbar {
    display: none;
}

.cat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 12px 20px;
    background: var(--card-bg);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: var(--transition);
    min-width: 80px;
    white-space: nowrap;
}

.cat-item:hover,
.cat-item.active {
    background: rgba(232,51,109,0.15);
    border-color: var(--brand-primary);
    transform: translateY(-2px);
}

.cat-item .cat-icon {
    font-size: 1.5rem;
}

.cat-item .cat-name {
    font-size: 0.78rem;
    color: var(--text-muted);
    font-weight: 500;
}

.cat-item:hover .cat-name,
.cat-item.active .cat-name {
    color: var(--brand-primary);
}

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

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

.video-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-brand);
    border-color: rgba(232,51,109,0.4);
}

.video-thumb {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
    background: var(--brand-dark);
}

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

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

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

.video-card:hover .video-overlay {
    background: rgba(0,0,0,0.4);
}

.video-play-btn {
    width: 56px;
    height: 56px;
    background: var(--gradient-brand);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    opacity: 0;
    transform: scale(0.8);
    transition: var(--transition);
    box-shadow: 0 0 30px rgba(232,51,109,0.5);
}

.video-card:hover .video-play-btn {
    opacity: 1;
    transform: scale(1);
}

.video-duration {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background: rgba(0,0,0,0.7);
    color: white;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

.video-quality {
    position: absolute;
    top: 8px;
    left: 8px;
    background: var(--gradient-brand);
    color: white;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 700;
}

.video-info {
    padding: 14px;
}

.video-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-light);
    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;
    justify-content: space-between;
    font-size: 0.78rem;
    color: var(--text-muted);
}

.video-stats {
    display: flex;
    gap: 12px;
}

.video-stat-item {
    display: flex;
    align-items: center;
    gap: 4px;
}

.video-author {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: 8px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.author-avatar {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--gradient-brand);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.65rem;
    color: white;
    font-weight: 700;
    flex-shrink: 0;
}

/* === 影视传媒模块 === */
.media-services {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.media-service-card {
    background: var(--card-bg);
    border-radius: var(--radius-md);
    padding: 28px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.media-service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-brand);
    transform: scaleX(0);
    transition: var(--transition);
}

.media-service-card:hover::before {
    transform: scaleX(1);
}

.media-service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card);
    border-color: rgba(232,51,109,0.3);
}

.service-icon {
    width: 56px;
    height: 56px;
    background: rgba(232,51,109,0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    margin-bottom: 16px;
    border: 1px solid rgba(232,51,109,0.2);
}

.service-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-light);
    margin-bottom: 8px;
}

.service-desc {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.7;
}

/* === AI赋能模块 === */
.ai-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    align-items: center;
}

.ai-feature-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.ai-feature-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding: 20px;
    background: var(--card-bg);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.ai-feature-item:hover {
    border-color: rgba(232,51,109,0.4);
    background: rgba(30,30,53,0.8);
}

.ai-icon {
    width: 48px;
    height: 48px;
    background: var(--gradient-brand);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
}

.ai-text h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.ai-text p {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.6;
}

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

.ai-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* === 专家展示 === */
.experts-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

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

.expert-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-brand);
    border-color: rgba(232,51,109,0.4);
}

.expert-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    margin: 0 auto 16px;
    overflow: hidden;
    border: 3px solid var(--brand-primary);
    box-shadow: 0 0 20px rgba(232,51,109,0.3);
}

.expert-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.expert-name {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.expert-title {
    font-size: 0.85rem;
    color: var(--brand-primary);
    margin-bottom: 12px;
    font-weight: 600;
}

.expert-bio {
    font-size: 0.83rem;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 16px;
}

.expert-awards {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: 16px;
}

.expert-btns {
    display: flex;
    gap: 8px;
    justify-content: center;
}

.expert-btn {
    padding: 7px 16px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.expert-btn-primary {
    background: var(--gradient-brand);
    color: white;
    border: none;
}

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

.expert-btn:hover {
    transform: translateY(-1px);
    opacity: 0.9;
}

/* === 社区功能 === */
.community-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.community-card {
    background: var(--card-bg);
    border-radius: var(--radius-md);
    padding: 24px 20px;
    text-align: center;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    cursor: pointer;
}

.community-card:hover {
    background: rgba(232,51,109,0.08);
    border-color: var(--brand-primary);
    transform: translateY(-3px);
}

.community-icon {
    font-size: 2.2rem;
    margin-bottom: 12px;
}

.community-name {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.community-desc {
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.6;
}

.community-count {
    font-size: 0.75rem;
    color: var(--brand-primary);
    font-weight: 600;
    margin-top: 8px;
}

/* === 合作品牌 === */
.partners-section {
    padding: 60px 0;
    background: var(--brand-mid);
}

.partners-grid {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
}

.partner-item {
    background: var(--card-bg);
    border-radius: var(--radius-md);
    padding: 16px 28px;
    border: 1px solid var(--border-color);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-muted);
    transition: var(--transition);
    cursor: pointer;
}

.partner-item:hover {
    border-color: var(--brand-primary);
    color: var(--brand-primary);
    transform: translateY(-2px);
}

/* === 用户评论 === */
.reviews-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.review-card {
    background: var(--card-bg);
    border-radius: var(--radius-md);
    padding: 22px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.review-card:hover {
    border-color: rgba(232,51,109,0.3);
    transform: translateY(-2px);
}

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

.reviewer-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--gradient-brand);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    color: white;
    font-weight: 700;
    flex-shrink: 0;
}

.reviewer-info .name {
    font-size: 0.9rem;
    font-weight: 700;
}

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

.review-stars {
    color: var(--brand-gold);
    font-size: 0.85rem;
    margin-bottom: 8px;
}

.review-text {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.7;
}

/* === FAQ === */
.faq-list {
    max-width: 860px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

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

.faq-item.open {
    border-color: rgba(232,51,109,0.4);
}

.faq-question {
    padding: 18px 22px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-light);
    gap: 16px;
}

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

.faq-toggle {
    width: 28px;
    height: 28px;
    background: rgba(232,51,109,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    color: var(--brand-primary);
    flex-shrink: 0;
    transition: var(--transition);
}

.faq-item.open .faq-toggle {
    transform: rotate(45deg);
    background: var(--brand-primary);
    color: white;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.3s ease;
    padding: 0 22px;
}

.faq-item.open .faq-answer {
    max-height: 300px;
    padding: 0 22px 18px;
}

.faq-answer p {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.8;
}

/* === 联系我们 === */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
}

.contact-info h3 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 20px;
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.contact-items {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-bottom: 28px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 14px;
    background: var(--card-bg);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.contact-item-icon {
    width: 40px;
    height: 40px;
    background: rgba(232,51,109,0.1);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.contact-item-text .label {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-bottom: 2px;
}

.contact-item-text .value {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-light);
}

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

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

.qr-item img {
    width: 120px;
    height: 120px;
    border-radius: var(--radius-sm);
    border: 2px solid var(--border-color);
    margin: 0 auto 8px;
}

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

.community-channels {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.channel-card {
    background: var(--card-bg);
    border-radius: var(--radius-md);
    padding: 16px;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 12px;
    transition: var(--transition);
    cursor: pointer;
}

.channel-card:hover {
    border-color: var(--brand-primary);
    transform: translateY(-2px);
}

.channel-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
}

.channel-text .name {
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 2px;
}

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

/* === 分享按钮 === */
.share-section {
    padding: 40px 0;
    background: var(--brand-dark);
    border-top: 1px solid var(--border-color);
}

.share-inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.share-label {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
}

.share-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-xl);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    color: white;
}

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

.share-wechat { background: #07C160; }
.share-weibo { background: #E6162D; }
.share-douyin { background: #010101; border: 1px solid #333; }
.share-bilibili { background: #00A1D6; }

/* === 底部 === */
.footer {
    background: var(--brand-darker);
    border-top: 1px solid var(--border-color);
    padding: 60px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}

.footer-brand img {
    height: 48px;
    margin-bottom: 14px;
}

.footer-brand p {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: 16px;
}

.footer-social {
    display: flex;
    gap: 10px;
}

.social-icon {
    width: 36px;
    height: 36px;
    background: var(--card-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    cursor: pointer;
}

.social-icon:hover {
    background: var(--brand-primary);
    border-color: var(--brand-primary);
    transform: translateY(-2px);
}

.footer-col h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-light);
}

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

.footer-col ul li a {
    font-size: 0.85rem;
    color: var(--text-muted);
    transition: var(--transition);
}

.footer-col ul li a:hover {
    color: var(--brand-primary);
    padding-left: 4px;
}

.footer-bottom {
    margin-top: 40px;
    padding: 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    max-width: 1280px;
    margin-left: auto;
    margin-right: auto;
}

.footer-copyright {
    font-size: 0.82rem;
    color: var(--text-muted);
}

.footer-copyright a {
    color: var(--brand-primary);
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-links a {
    font-size: 0.82rem;
    color: var(--text-muted);
    transition: var(--transition);
}

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

/* === 面包屑 === */
.breadcrumb {
    padding: 14px 0;
    background: var(--brand-mid);
    border-bottom: 1px solid var(--border-color);
}

.breadcrumb-inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.83rem;
    color: var(--text-muted);
}

.breadcrumb-inner a {
    color: var(--text-muted);
    transition: var(--transition);
}

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

.breadcrumb-inner .sep {
    color: rgba(255,255,255,0.2);
}

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

/* === 加入社区引导 === */
.join-section {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--brand-dark), var(--brand-accent));
    text-align: center;
    position: relative;
    overflow: hidden;
}

.join-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at center, rgba(232,51,109,0.1) 0%, transparent 60%);
    pointer-events: none;
}

.join-section h2 {
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 16px;
}

.join-section p {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 32px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.join-steps {
    display: flex;
    gap: 32px;
    justify-content: center;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.join-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    max-width: 160px;
}

.step-num {
    width: 48px;
    height: 48px;
    background: var(--gradient-brand);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    font-weight: 800;
    color: white;
}

.step-text {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-align: center;
    line-height: 1.5;
}

/* === 页面内容区 === */
.page-hero {
    padding: 60px 0;
    background: linear-gradient(135deg, var(--brand-dark), var(--brand-mid));
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

.page-hero h1 {
    font-size: 2.4rem;
    font-weight: 800;
    margin-bottom: 12px;
}

.page-hero p {
    font-size: 1rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* === 滚动动画 === */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* === 移动端菜单 === */
.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.9);
    z-index: 2000;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
}

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

.mobile-menu a {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-light);
    padding: 12px 32px;
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.mobile-menu a:hover {
    color: var(--brand-primary);
    background: rgba(232,51,109,0.1);
}

.mobile-menu-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    color: white;
    font-size: 1.8rem;
    cursor: pointer;
    padding: 8px;
}

/* === 响应式 === */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero-video-preview {
        max-width: 560px;
        margin: 0 auto;
    }

    .media-services {
        grid-template-columns: repeat(2, 1fr);
    }

    .experts-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .community-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }

    .ai-features {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .hero-text h1 {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.6rem;
    }

    .media-services {
        grid-template-columns: 1fr;
    }

    .experts-grid {
        grid-template-columns: 1fr;
    }

    .community-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .reviews-grid {
        grid-template-columns: 1fr;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }

    .video-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero-stats {
        gap: 20px;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    .community-channels {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .video-grid {
        grid-template-columns: 1fr;
    }

    .community-grid {
        grid-template-columns: 1fr;
    }

    .hero-text h1 {
        font-size: 1.6rem;
    }

    .hero-stats {
        gap: 16px;
    }

    .hero-stat .num {
        font-size: 1.4rem;
    }

    .search-bar-inner {
        flex-direction: column;
        gap: 8px;
    }

    .search-input-wrap input {
        border-right: 2px solid var(--border-color);
        border-radius: var(--radius-xl);
    }

    .search-btn {
        border-radius: var(--radius-xl);
        width: 100%;
    }
}

/* === 懒加载占位 === */
img[data-src] {
    background: var(--card-bg);
    min-height: 100px;
}

/* === 自定义滚动条 === */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: var(--brand-darker);
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--brand-secondary);
}

/* === 视频H5元素 === */
.video-thumb video {
    pointer-events: none;
}

.hero-video-preview video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-lg);
}

/* === 联系表单 === */
.contact-grid {
    display: grid;
    gap: 40px;
    align-items: start;
}

.contact-grid form input,
.contact-grid form select,
.contact-grid form textarea {
    box-sizing: border-box;
    width: 100%;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(255,255,255,0.1);
    background: rgba(0,0,0,0.2);
    color: var(--text-light);
    font-size: 0.95rem;
    font-family: inherit;
    transition: var(--transition);
}

.contact-grid form input:focus,
.contact-grid form select:focus,
.contact-grid form textarea:focus {
    outline: none;
    border-color: var(--brand-primary);
    box-shadow: 0 0 0 3px rgba(232,51,109,0.15);
}

.contact-grid form select option {
    background: var(--brand-mid);
    color: var(--text-light);
}

/* === 专家卡片链接按钮 === */
.expert-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 18px;
    border-radius: var(--radius-xl);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.expert-btn-primary {
    background: var(--gradient-brand);
    color: white;
    border: none;
}

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

.expert-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-brand);
}

/* === 今日更新跑马灯 === */
marquee {
    color: var(--text-muted);
}

/* === 荣誉资质卡片 === */
.honor-card {
    background: var(--card-bg);
    padding: 24px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

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

/* === 响应式修复 === */
@media (max-width: 768px) {
    .contact-grid {
        grid-template-columns: 1fr !important;
    }
    
    .experts-grid {
        grid-template-columns: 1fr;
    }
}