/* =============================================
   抖音风视频社区 - 主样式文件
   域名: bdgodc.cn
   ============================================= */

/* === 基础重置与变量 === */
:root {
    --primary: #E8500A;
    --primary-dark: #C43E07;
    --primary-light: #FF6B2B;
    --secondary: #1A1A2E;
    --secondary-light: #16213E;
    --accent: #F5A623;
    --text-main: #1C1C1C;
    --text-muted: #6B7280;
    --text-light: #FFFFFF;
    --bg-dark: #0D0D1A;
    --bg-card: #F8F9FA;
    --border: #E5E7EB;
    --shadow: 0 4px 20px rgba(0,0,0,0.12);
    --shadow-hover: 0 8px 40px rgba(232,80,10,0.25);
    --radius: 12px;
    --radius-sm: 6px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-main: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

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

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

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

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: 800;
    color: var(--secondary);
    margin-bottom: 0.5rem;
    position: relative;
}

.section-title span {
    color: var(--primary);
}

.section-subtitle {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 3rem;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: 2px;
    margin: 1rem auto 0;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    box-shadow: 0 4px 15px rgba(232,80,10,0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(232,80,10,0.4);
    color: #fff;
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: #fff;
}

.btn-white {
    background: #fff;
    color: var(--primary);
    font-weight: 700;
}

.btn-white:hover {
    background: var(--accent);
    color: #fff;
}

.tag {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    background: rgba(232,80,10,0.1);
    color: var(--primary);
}

/* === 顶部公告栏 === */
.top-bar {
    background: var(--secondary);
    color: rgba(255,255,255,0.8);
    font-size: 0.82rem;
    padding: 8px 0;
}

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

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

.top-bar a:hover {
    color: #fff;
}

/* === 导航栏 === */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 2px 20px rgba(0,0,0,0.08);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    gap: 20px;
}

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

.logo-mark {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    font-weight: 900;
    color: #fff;
    letter-spacing: -1px;
    box-shadow: 0 4px 12px rgba(232,80,10,0.35);
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.logo-text .brand {
    font-size: 1.3rem;
    font-weight: 900;
    color: var(--secondary);
    letter-spacing: 1px;
}

.logo-text .tagline {
    font-size: 0.7rem;
    color: var(--text-muted);
    letter-spacing: 0.5px;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 4px;
}

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

.main-nav a:hover,
.main-nav a.active {
    background: rgba(232,80,10,0.08);
    color: var(--primary);
}

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

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

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

/* === 搜索框 === */
.search-bar-wrap {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    padding: 10px 0;
}

.search-form {
    display: flex;
    align-items: center;
    max-width: 680px;
    margin: 0 auto;
    background: #fff;
    border: 2px solid var(--border);
    border-radius: 30px;
    overflow: hidden;
    transition: var(--transition);
}

.search-form:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(232,80,10,0.1);
}

.search-form input {
    flex: 1;
    border: none;
    outline: none;
    padding: 10px 20px;
    font-size: 0.95rem;
    font-family: var(--font-main);
    background: transparent;
}

.search-form button {
    background: var(--primary);
    color: #fff;
    border: none;
    padding: 10px 24px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    font-family: var(--font-main);
    transition: var(--transition);
}

.search-form button:hover {
    background: var(--primary-dark);
}

/* === Hero Banner === */
.hero-banner {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: var(--bg-dark);
}

.hero-bg {
    position: absolute;
    inset: 0;
    background-image: url('../images/banner.jpg');
    background-size: cover;
    background-position: center;
    filter: brightness(0.45);
    transform: scale(1.05);
    transition: transform 8s ease;
}

.hero-banner:hover .hero-bg {
    transform: scale(1.0);
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(13,13,26,0.8) 0%, rgba(232,80,10,0.15) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
    padding: 80px 0;
}

.oJzip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(232,80,10,0.2);
    border: 1px solid rgba(232,80,10,0.4);
    color: var(--accent);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.82rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(8px);
}

.oJzip::before {
    content: '●';
    color: var(--primary-light);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.hero-title {
    font-size: clamp(2.2rem, 5vw, 3.8rem);
    font-weight: 900;
    color: #fff;
    line-height: 1.15;
    margin-bottom: 1.5rem;
    text-shadow: 0 2px 20px rgba(0,0,0,0.5);
}

.hero-title .highlight {
    color: var(--primary-light);
    position: relative;
}

.hero-desc {
    font-size: 1.1rem;
    color: rgba(255,255,255,0.8);
    margin-bottom: 2.5rem;
    line-height: 1.8;
}

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

.hero-stats {
    position: absolute;
    bottom: 40px;
    right: 0;
    display: flex;
    gap: 30px;
    z-index: 2;
}

.stat-item {
    text-align: center;
    color: #fff;
}

.stat-num {
    font-size: 2rem;
    font-weight: 900;
    color: var(--accent);
    display: block;
    line-height: 1;
}

.stat-label {
    font-size: 0.78rem;
    color: rgba(255,255,255,0.6);
    margin-top: 4px;
}

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

.video-card {
    background: #fff;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    cursor: pointer;
}

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

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

.video-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.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: 60px;
    height: 60px;
    background: rgba(232,80,10,0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transform: scale(0.8);
    transition: var(--transition);
    box-shadow: 0 4px 20px rgba(232,80,10,0.5);
}

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

.play-icon::after {
    content: '';
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 10px 0 10px 18px;
    border-color: transparent transparent transparent #fff;
    margin-left: 4px;
}

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

.video-tag {
    position: absolute;
    top: 10px;
    left: 10px;
}

.video-body {
    padding: 16px;
}

.video-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 8px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.video-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.video-stats {
    display: flex;
    gap: 12px;
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid var(--border);
    font-size: 0.8rem;
    color: var(--text-muted);
}

.video-stats span {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* === 功能区块 === */
.section {
    padding: 80px 0;
}

.section-alt {
    background: var(--bg-card);
}

.section-dark {
    background: var(--secondary);
    color: #fff;
}

.section-dark .section-title {
    color: #fff;
}

.section-dark .section-subtitle {
    color: rgba(255,255,255,0.6);
}

/* === 特性卡片 === */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 24px;
}

.feature-card {
    background: #fff;
    border-radius: var(--radius);
    padding: 28px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transform: scaleX(0);
    transition: var(--transition);
}

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

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

.feature-icon {
    width: 52px;
    height: 52px;
    background: linear-gradient(135deg, rgba(232,80,10,0.1), rgba(245,166,35,0.1));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 16px;
}

.feature-title {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--secondary);
}

.feature-desc {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.6;
}

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

.team-card {
    background: #fff;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
}

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

.team-avatar {
    position: relative;
    height: 220px;
    overflow: hidden;
}

.team-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top;
    transition: transform 0.5s ease;
}

.team-card:hover .team-avatar img {
    transform: scale(1.05);
}

.team-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(13,13,26,0.8) 0%, transparent 60%);
}

.team-body {
    padding: 20px;
}

.team-name {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--secondary);
    margin-bottom: 4px;
}

.team-role {
    font-size: 0.85rem;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 10px;
}

.team-desc {
    font-size: 0.83rem;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 14px;
}

.team-actions {
    display: flex;
    gap: 8px;
    justify-content: center;
}

.team-actions a {
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
}

/* === 合作品牌 === */
.ERARCd {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 20px;
    align-items: center;
}

.CT0C8w {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 20px;
    text-align: center;
    transition: var(--transition);
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text-muted);
}

.CT0C8w:hover {
    border-color: var(--primary);
    color: var(--primary);
    box-shadow: 0 4px 15px rgba(232,80,10,0.1);
    transform: translateY(-2px);
}

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

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

.review-card::before {
    content: '"';
    position: absolute;
    top: 16px;
    right: 20px;
    font-size: 4rem;
    color: rgba(232,80,10,0.1);
    font-family: Georgia, serif;
    line-height: 1;
}

.review-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.Miw38Nrh {
    color: var(--accent);
    font-size: 1rem;
    margin-bottom: 12px;
    letter-spacing: 2px;
}

.review-text {
    font-size: 0.9rem;
    color: var(--text-main);
    line-height: 1.7;
    margin-bottom: 16px;
}

.review-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.JyCORum {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}

.review-info .name {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--secondary);
}

.review-info .date {
    font-size: 0.78rem;
    color: var(--text-muted);
}

/* === FAQ === */
.faq-list {
    max-width: 820px;
    margin: 0 auto;
}

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

.faq-item:hover {
    border-color: var(--primary);
}

.faq-question {
    padding: 18px 24px;
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--secondary);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #fff;
    user-select: none;
}

.faq-question::after {
    content: '+';
    font-size: 1.4rem;
    color: var(--primary);
    transition: var(--transition);
    flex-shrink: 0;
}

.faq-item.active .faq-question::after {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
    background: var(--bg-card);
}

.faq-item.active .faq-answer {
    max-height: 300px;
}

.faq-answer p {
    padding: 16px 24px;
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.7;
}

/* === 联系区域 === */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

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

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 16px;
    background: #fff;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.contact-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}

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

.contact-detail .value {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--secondary);
}

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

.SDiZQl1 {
    text-align: center;
}

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

.qr-item p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* === AI赋能区块 === */
.ai-section {
    background: linear-gradient(135deg, var(--secondary) 0%, #0F3460 100%);
    position: relative;
    overflow: hidden;
}

.ai-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(232,80,10,0.15) 0%, transparent 70%);
    border-radius: 50%;
}

.ai-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.ai-content {
    color: #fff;
}

.ai-content .section-title {
    color: #fff;
    font-size: 2.2rem;
}

.ai-content p {
    color: rgba(255,255,255,0.75);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.ai-features {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.NrCno {
    display: flex;
    align-items: center;
    gap: 12px;
    color: rgba(255,255,255,0.85);
    font-size: 0.9rem;
}

.NrCno::before {
    content: '✓';
    width: 24px;
    height: 24px;
    background: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}

.ai-image {
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}

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

/* === 社区区块 === */
.OJuUiTEG {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: var(--radius);
    padding: 50px 40px;
    color: #fff;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 30px;
}

.community-banner h3 {
    font-size: 1.8rem;
    font-weight: 900;
    margin-bottom: 8px;
}

.community-banner p {
    color: rgba(255,255,255,0.8);
    font-size: 0.95rem;
}

.bFWkYlj {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 24px;
    margin-top: 3rem;
}

.step-card {
    text-align: center;
    padding: 28px 20px;
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    position: relative;
}

.step-num {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 900;
    color: #fff;
    margin: 0 auto 16px;
}

.step-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 8px;
}

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

/* === 社交分享 === */
.b1Mhr1 {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.gw7xE3 {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

.zaxCTZ { background: #07C160; color: #fff; }
.FKoTPHJ { background: #E6162D; color: #fff; }
.XwBy7kN { background: #000; color: #fff; }
.DDZV2S6 { background: #00A1D6; color: #fff; }

.gw7xE3:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

/* === 面包屑 === */
.breadcrumb {
    padding: 14px 0;
    font-size: 0.85rem;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
    background: var(--bg-card);
}

.breadcrumb ol {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.breadcrumb li + li::before {
    content: '›';
    margin-right: 8px;
    color: var(--text-muted);
}

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

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

/* === 页脚 === */
.site-footer {
    background: var(--secondary);
    color: rgba(255,255,255,0.7);
    padding: 60px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand .logo-mark {
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 0.88rem;
    line-height: 1.7;
    margin-bottom: 20px;
}

.footer-col h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
}

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

.footer-col ul li a {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.6);
    transition: var(--transition);
}

.footer-col ul li a:hover {
    color: var(--accent);
}

.footer-bottom {
    padding: 20px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    font-size: 0.82rem;
}

.footer-bottom a {
    color: rgba(255,255,255,0.5);
}

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

.HTmzVxR {
    color: rgba(255,255,255,0.4);
    font-size: 0.78rem;
}

/* === 页面内容区 === */
.page-hero {
    background: linear-gradient(135deg, var(--secondary) 0%, #0F3460 100%);
    padding: 60px 0;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.page-hero::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 40px;
    background: #fff;
    clip-path: ellipse(55% 100% at 50% 100%);
}

.page-hero h1 {
    font-size: 2.5rem;
    font-weight: 900;
    margin-bottom: 12px;
}

.page-hero p {
    color: rgba(255,255,255,0.75);
    font-size: 1.05rem;
    max-width: 600px;
}

/* === 响应式 === */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    .ai-grid {
        grid-template-columns: 1fr;
    }
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .main-nav {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 16px;
        border-bottom: 1px solid var(--border);
        box-shadow: 0 8px 20px rgba(0,0,0,0.1);
    }

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

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

    .header-actions .btn {
        display: none;
    }

    .hero-banner {
        min-height: 480px;
    }

    .hero-title {
        font-size: 1.8rem;
    }

    .hero-stats {
        display: none;
    }

    .section {
        padding: 50px 0;
    }

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

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

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

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

    .video-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    }

    .top-bar .container {
        flex-direction: column;
        gap: 4px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-actions {
        flex-direction: column;
    }

    .hero-actions .btn {
        width: 100%;
        justify-content: center;
    }

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

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

/* === 懒加载占位 === */
img[loading="lazy"] {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* === 视频模态框 === */
.video-modal {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: rgba(0,0,0,0.9);
    align-items: center;
    justify-content: center;
}

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

.modal-inner {
    position: relative;
    width: 90%;
    max-width: 900px;
    background: #000;
    border-radius: var(--radius);
    overflow: hidden;
}

.modal-close {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 36px;
    height: 36px;
    background: rgba(255,255,255,0.2);
    border: none;
    border-radius: 50%;
    color: #fff;
    font-size: 1.2rem;
    cursor: pointer;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

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

.modal-video {
    width: 100%;
    aspect-ratio: 16/9;
    background: #111;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.5);
    font-size: 1rem;
}

/* === 内页侧边栏 === */
.inner-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 40px;
    align-items: start;
}

.sidebar-widget {
    background: #fff;
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
    margin-bottom: 24px;
    border: 1px solid var(--border);
}

.sidebar-widget h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary);
}

.hot-list li {
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.88rem;
}

.hot-list li:last-child {
    border-bottom: none;
}

.hot-list li a {
    color: var(--text-main);
    display: flex;
    align-items: flex-start;
    gap: 8px;
}

.hot-list li a:hover {
    color: var(--primary);
}

.hot-list .num {
    width: 20px;
    height: 20px;
    background: var(--primary);
    color: #fff;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-top: 1px;
}

.hot-list li:nth-child(n+4) .num {
    background: var(--border);
    color: var(--text-muted);
}

@media (max-width: 1024px) {
    .inner-layout {
        grid-template-columns: 1fr;
    }
}

/* === Logo图片样式（替代原CSS文字Logo）=== */
.logo-img {
    height: 40px;
    width: auto;
    object-fit: contain;
    display: block;
}

.footer-logo {
    height: 40px;
    width: auto;
    object-fit: contain;
    display: block;
    margin-bottom: 12px;
    filter: brightness(1.1);
}

/* === 视频标签栏 === */
.CPoh7RI {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.ruNI7OC1 {
    background: rgba(232,80,10,0.15);
    color: var(--accent);
    font-size: 0.75rem;
    padding: 3px 10px;
    border-radius: 20px;
    border: 1px solid rgba(232,80,10,0.3);
    white-space: nowrap;
}

/* === 分享按钮 === */
.b1Mhr1 {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.gw7xE3 {
    background: rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.7);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 6px;
    padding: 5px 14px;
    font-size: 0.78rem;
    cursor: pointer;
    transition: var(--transition);
}

.gw7xE3:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

/* === TikTok风格竖屏短视频卡片 === */
.short-video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 16px;
}

.short-video-card {
    background: var(--secondary);
    border-radius: var(--radius);
    overflow: hidden;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

.short-video-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(0,0,0,0.3);
}

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

.short-video-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.short-video-card:hover .short-video-thumb img {
    transform: scale(1.06);
}

.short-video-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, transparent 50%);
}

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

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

.short-video-play .play-icon {
    width: 48px;
    height: 48px;
    background: rgba(232,80,10,0.9);
}

.short-video-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 12px;
}

.short-video-title {
    font-size: 0.82rem;
    font-weight: 700;
    color: #fff;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 6px;
}

.short-video-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.72rem;
    color: rgba(255,255,255,0.6);
}

.short-video-badge {
    position: absolute;
    top: 10px;
    left: 10px;
    background: var(--primary);
    color: #fff;
    font-size: 0.68rem;
    padding: 2px 8px;
    border-radius: 4px;
    font-weight: 700;
}

/* === 返回顶部按钮 === */
#backTop {
    display: none;
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 44px;
    height: 44px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    align-items: center;
    justify-content: center;
    z-index: 999;
    box-shadow: 0 4px 16px rgba(232,80,10,0.4);
    transition: var(--transition);
}

#backTop:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

/* === 用户评论卡片（每条独立Schema）=== */
.review-card {
    background: #fff;
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.review-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-3px);
}

.Miw38Nrh {
    color: #F5A623;
    font-size: 1.1rem;
    margin-bottom: 10px;
    letter-spacing: 2px;
}

.review-text {
    font-size: 0.9rem;
    line-height: 1.7;
    color: var(--text-main);
    margin-bottom: 16px;
}

.review-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.JyCORum {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: #fff;
    font-size: 1rem;
    flex-shrink: 0;
}

.review-info .name {
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--secondary);
}

.review-info .date {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-top: 2px;
}

/* === 模态框video标签修复 === */
.modal-video {
    aspect-ratio: unset;
}

/* === 面包屑 === */
.breadcrumb {
    padding: 10px 0;
    font-size: 0.82rem;
    color: var(--text-muted);
}

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

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

.breadcrumb span {
    margin: 0 6px;
    color: var(--border);
}

/* === 响应式补充 === */
@media (max-width: 768px) {
    .short-video-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 480px) {
    .short-video-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    #backTop {
        bottom: 16px;
        right: 16px;
    }
}