/* 抖阴 - 影视传媒视频社区 外部样式表 */
/* 网站域名: wwaqg.cn */

/* ========== 基础重置与变量 ========== */
:root {
    --primary-color: #ff6b9d;
    --primary-dark: #e55a8a;
    --secondary-color: #ff8fab;
    --accent-color: #ffc3d0;
    --gradient-start: #ff6b9d;
    --gradient-end: #ff8fab;
    --text-dark: #333333;
    --text-light: #666666;
    --text-muted: #999999;
    --bg-light: #fafafa;
    --bg-white: #ffffff;
    --border-color: #eeeeee;
    --shadow-light: 0 2px 10px rgba(255, 107, 157, 0.1);
    --shadow-medium: 0 4px 20px rgba(255, 107, 157, 0.15);
    --shadow-heavy: 0 8px 30px rgba(255, 107, 157, 0.2);
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --border-radius: 12px;
    --border-radius-lg: 20px;
}

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

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-light);
}

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

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

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

ul, ol {
    list-style: none;
}

/* ========== 通用容器 ========== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 60px 0;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-dark);
    text-align: center;
    margin-bottom: 15px;
}

.section-subtitle {
    font-size: 1rem;
    color: var(--text-light);
    text-align: center;
    margin-bottom: 40px;
}

/* ========== 头部导航 ========== */
.header {
    background: var(--bg-white);
    box-shadow: var(--shadow-light);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 0;
}

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

.logo img {
    height: 45px;
    width: auto;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    gap: 30px;
}

.nav-menu a {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-dark);
    padding: 8px 0;
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    transition: width var(--transition-normal);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-dark);
}

/* ========== 搜索框 ========== */
.search-bar {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    padding: 15px 0;
}

.search-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
}

.search-input {
    width: 100%;
    max-width: 500px;
    padding: 12px 20px;
    border: none;
    border-radius: 25px;
    font-size: 1rem;
    outline: none;
    box-shadow: var(--shadow-light);
}

.search-btn {
    padding: 12px 25px;
    background: var(--bg-white);
    color: var(--primary-color);
    border: none;
    border-radius: 25px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.search-btn:hover {
    background: var(--text-dark);
    color: var(--bg-white);
}

/* ========== 英雄区域 ========== */
.hero {
    position: relative;
    height: 500px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 107, 157, 0.8), rgba(255, 143, 171, 0.6));
}

.hero-content {
    position: relative;
    z-index: 10;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: var(--bg-white);
    padding: 20px;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 15px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.hero p {
    font-size: 1.25rem;
    max-width: 600px;
    margin-bottom: 30px;
    opacity: 0.95;
}

.hero-btns {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    justify-content: center;
}

.btn {
    display: inline-block;
    padding: 14px 30px;
    border-radius: 30px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: none;
}

.btn-primary {
    background: var(--bg-white);
    color: var(--primary-color);
}

.btn-primary:hover {
    background: var(--text-dark);
    color: var(--bg-white);
    transform: translateY(-2px);
}

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

.btn-outline:hover {
    background: var(--bg-white);
    color: var(--primary-color);
    transform: translateY(-2px);
}

/* ========== 视频卡片 ========== */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
}

.video-card {
    background: var(--bg-white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-light);
    transition: all var(--transition-normal);
}

.video-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-heavy);
}

.video-thumb {
    position: relative;
    padding-top: 56.25%;
    overflow: hidden;
}

.video-thumb img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

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

.video-play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: rgba(255, 107, 157, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
    cursor: pointer;
}

.video-play-btn::after {
    content: '';
    width: 0;
    height: 0;
    border-left: 18px solid white;
    border-top: 12px solid transparent;
    border-bottom: 12px solid transparent;
    margin-left: 4px;
}

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

.video-duration {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 0.85rem;
}

.video-info {
    padding: 15px;
}

.video-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-meta {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

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

.video-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 10px;
}

.video-tag {
    background: var(--accent-color);
    color: var(--primary-dark);
    padding: 3px 10px;
    border-radius: 15px;
    font-size: 0.75rem;
}

/* ========== 分类标签 ========== */
.category-tabs {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 30px;
}

.category-tab {
    padding: 10px 25px;
    background: var(--bg-white);
    border: 2px solid var(--border-color);
    border-radius: 25px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.category-tab:hover,
.category-tab.active {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: var(--bg-white);
    border-color: transparent;
}

/* ========== 专家展示 ========== */
.expert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
}

.expert-card {
    background: var(--bg-white);
    border-radius: var(--border-radius);
    padding: 25px;
    text-align: center;
    box-shadow: var(--shadow-light);
    transition: all var(--transition-normal);
}

.expert-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-heavy);
}

.expert-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    object-fit: cover;
    margin: 0 auto 15px;
    border: 3px solid var(--accent-color);
}

.expert-name {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 5px;
}

.expert-title {
    font-size: 0.9rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.expert-desc {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 15px;
    line-height: 1.5;
}

.expert-social {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 15px;
}

.expert-social a {
    width: 35px;
    height: 35px;
    background: var(--bg-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    transition: all var(--transition-fast);
}

.expert-social a:hover {
    background: var(--primary-color);
    color: var(--bg-white);
}

.expert-btns {
    display: flex;
    gap: 10px;
    justify-content: center;
}

.expert-btns .btn {
    padding: 8px 18px;
    font-size: 0.85rem;
}

/* ========== 合作伙伴 ========== */
.partner-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 40px;
}

.partner-logos img {
    height: 60px;
    width: auto;
    filter: grayscale(100%);
    opacity: 0.6;
    transition: all var(--transition-normal);
}

.partner-logos img:hover {
    filter: grayscale(0%);
    opacity: 1;
}

/* ========== FAQ ========== */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-white);
    border-radius: var(--border-radius);
    margin-bottom: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-light);
}

.faq-question {
    padding: 20px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background var(--transition-fast);
}

.faq-question:hover {
    background: var(--bg-light);
}

.faq-question::after {
    content: '+';
    font-size: 1.5rem;
    color: var(--primary-color);
}

.faq-item.active .faq-question::after {
    content: '-';
}

.faq-answer {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: all var(--transition-normal);
}

.faq-item.active .faq-answer {
    padding: 0 20px 20px;
    max-height: 500px;
}

/* ========== 用户评价 ========== */
.review-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 25px;
}

.review-card {
    background: var(--bg-white);
    border-radius: var(--border-radius);
    padding: 25px;
    box-shadow: var(--shadow-light);
}

.review-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

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

.review-user {
    flex: 1;
}

.review-name {
    font-weight: 600;
    color: var(--text-dark);
}

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

.review-stars {
    color: #ffc107;
    font-size: 1rem;
}

.review-content {
    font-size: 0.95rem;
    color: var(--text-light);
    line-height: 1.6;
}

/* ========== 联系我们 ========== */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.contact-card {
    background: var(--bg-white);
    border-radius: var(--border-radius);
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow-light);
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
    font-size: 1.5rem;
    color: var(--bg-white);
}

.contact-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.contact-info {
    font-size: 0.95rem;
    color: var(--text-light);
}

/* ========== 页脚 ========== */
.footer {
    background: var(--text-dark);
    color: var(--bg-white);
    padding: 50px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--accent-color);
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    transition: color var(--transition-fast);
}

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

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

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

.footer-qr-item img {
    width: 100px;
    height: 100px;
    background: var(--bg-white);
    border-radius: 8px;
    padding: 5px;
    margin-bottom: 8px;
}

.footer-qr-item span {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.7);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 20px;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 5px;
}

.footer-social {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 15px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-white);
    transition: all var(--transition-fast);
}

.footer-social a:hover {
    background: var(--primary-color);
}

/* ========== 面包屑导航 ========== */
.breadcrumb {
    background: var(--bg-white);
    padding: 15px 0;
    border-bottom: 1px solid var(--border-color);
}

.breadcrumb-list {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
}

.breadcrumb-list li::after {
    content: '/';
    margin-left: 10px;
    color: var(--text-muted);
}

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

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

/* ========== 页面横幅 ========== */
.page-banner {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    padding: 60px 0;
    text-align: center;
    color: var(--bg-white);
}

.page-banner h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.page-banner p {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* ========== 社区功能 ========== */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.feature-card {
    background: var(--bg-white);
    border-radius: var(--border-radius);
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow-light);
    transition: all var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-heavy);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.8rem;
    color: var(--bg-white);
}

.feature-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.feature-desc {
    font-size: 0.95rem;
    color: var(--text-light);
    line-height: 1.5;
}

/* ========== 工具卡片 ========== */
.tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 25px;
}

.tool-card {
    background: var(--bg-white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-light);
    transition: all var(--transition-normal);
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-heavy);
}

.tool-image {
    height: 180px;
    overflow: hidden;
}

.tool-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.tool-card:hover .tool-image img {
    transform: scale(1.05);
}

.tool-content {
    padding: 20px;
}

.tool-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.tool-desc {
    font-size: 0.95rem;
    color: var(--text-light);
    margin-bottom: 15px;
    line-height: 1.5;
}

.tool-features {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tool-feature {
    background: var(--bg-light);
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    color: var(--text-light);
}

/* ========== 统计数据 ========== */
.stats-section {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    padding: 60px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 30px;
    text-align: center;
    color: var(--bg-white);
}

.stat-item h3 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 5px;
}

.stat-item p {
    font-size: 1rem;
    opacity: 0.9;
}

/* ========== 响应式设计 ========== */
@media (max-width: 992px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-white);
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-medium);
    }

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

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

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

    .hero p {
        font-size: 1rem;
    }

    .section-title {
        font-size: 1.5rem;
    }
}

@media (max-width: 768px) {
    .hero {
        height: 400px;
    }

    .hero h1 {
        font-size: 1.75rem;
    }

    .section {
        padding: 40px 0;
    }

    .video-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }

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

    .footer-qr {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.5rem;
    }

    .hero-btns {
        flex-direction: column;
        width: 100%;
    }

    .hero-btns .btn {
        width: 100%;
    }

    .search-container {
        flex-direction: column;
    }

    .search-input,
    .search-btn {
        width: 100%;
        max-width: none;
    }
}

/* ========== 动画效果 ========== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease forwards;
}

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

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

/* ========== 滚动条美化 ========== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-light);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}


/* ========== 面包屑导航 ========== */
.breadcrumb {
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    padding: 12px 0;
}

.breadcrumb-list {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
}

.breadcrumb-item {
    display: flex;
    align-items: center;
}

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

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

.breadcrumb-item a {
    color: var(--text-light);
    transition: color var(--transition-fast);
}

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

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

/* ========== 专家资质标签 ========== */
.expert-credentials {
    display: inline-block;
    background: var(--bg-light);
    color: var(--text-light);
    padding: 6px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    margin-bottom: 12px;
}

/* ========== 英雄区域描述 ========== */
.hero-desc {
    font-size: 1.1rem !important;
    line-height: 1.8;
    max-width: 750px !important;
}