/* 海角网 - 主样式表 */
/* 影视传媒公司与视频社区平台 */

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

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
    overflow-x: hidden;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

ul, ol {
    list-style: none;
}

/* ==================== 颜色变量 ==================== */
:root {
    --primary-color: #ff6b9d;
    --primary-dark: #e5527f;
    --primary-light: #ffb3cc;
    --secondary-color: #ff9a56;
    --accent-color: #6c5ce7;
    --text-primary: #2d3436;
    --text-secondary: #636e72;
    --text-light: #b2bec3;
    --bg-light: #f8f9fa;
    --bg-dark: #2d3436;
    --white: #ffffff;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.15);
    --gradient-primary: linear-gradient(135deg, #ff6b9d 0%, #ff9a56 100%);
    --gradient-secondary: linear-gradient(135deg, #6c5ce7 0%, #a29bfe 100%);
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

/* ==================== 容器布局 ==================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 15px;
}

.section-title p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ==================== 头部导航 ==================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
}

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

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

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

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 35px;
}

.nav-menu a {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    position: relative;
    padding: 5px 0;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

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

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

/* 移动端菜单按钮 */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 10px;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 3px;
    transition: var(--transition);
}

/* ==================== 搜索框 ==================== */
.search-bar {
    background: var(--bg-light);
    padding: 15px 0;
    border-bottom: 1px solid #eee;
    margin-top: 70px;
}

.search-container {
    display: flex;
    align-items: center;
    max-width: 600px;
    margin: 0 auto;
    background: var(--white);
    border-radius: 50px;
    padding: 8px 20px;
    box-shadow: var(--shadow);
}

.search-container input {
    flex: 1;
    border: none;
    outline: none;
    font-size: 1rem;
    padding: 10px;
    background: transparent;
}

.search-container button {
    background: var(--gradient-primary);
    border: none;
    padding: 12px 25px;
    border-radius: 50px;
    color: var(--white);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.search-container button:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 15px rgba(255, 107, 157, 0.4);
}

/* ==================== Hero区域 ==================== */
.hero {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, rgba(255, 107, 157, 0.1) 0%, rgba(255, 154, 86, 0.1) 100%);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 650px;
}

.hero-content h1 {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.hero-content h1 span {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-content p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 30px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(255, 107, 157, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(255, 107, 157, 0.5);
}

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

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

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

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

.video-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.video-thumbnail {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
}

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

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

.play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 70px;
    height: 70px;
    background: rgba(255, 107, 157, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.play-button::after {
    content: '';
    width: 0;
    height: 0;
    border-left: 20px solid var(--white);
    border-top: 12px solid transparent;
    border-bottom: 12px solid transparent;
    margin-left: 5px;
}

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

.video-duration {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: rgba(0, 0, 0, 0.8);
    color: var(--white);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.85rem;
}

.video-info {
    padding: 18px;
}

.video-info h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-meta {
    display: flex;
    align-items: center;
    gap: 15px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.video-meta span {
    display: flex;
    align-items: center;
    gap: 5px;
}

.video-stats {
    display: flex;
    gap: 20px;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid #eee;
}

.video-stats span {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ==================== 特色模块 ==================== */
.features {
    background: var(--bg-light);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--white);
    padding: 35px;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--white);
}

.feature-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ==================== 专家展示 ==================== */
.expert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.expert-card {
    background: var(--white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.expert-avatar {
    width: 100%;
    aspect-ratio: 1;
    overflow: hidden;
}

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

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

.expert-info {
    padding: 25px;
    text-align: center;
}

.expert-info h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.expert-title {
    color: var(--primary-color);
    font-size: 0.95rem;
    margin-bottom: 12px;
}

.expert-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 15px;
}

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

.expert-buttons .btn {
    padding: 10px 20px;
    font-size: 0.9rem;
}

/* ==================== 用户评价 ==================== */
.testimonials {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--white);
}

.testimonials .section-title h2,
.testimonials .section-title p {
    color: var(--white);
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
}

.testimonial-card {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: 30px;
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.testimonial-content {
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 20px;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 15px;
}

.testimonial-author img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--white);
}

.author-info h4 {
    font-size: 1rem;
    font-weight: 600;
}

.author-info span {
    font-size: 0.85rem;
    opacity: 0.8;
}

/* ==================== 合作伙伴 ==================== */
.partners {
    background: var(--bg-light);
}

.partner-logos {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 40px;
}

.partner-logos img {
    height: 50px;
    opacity: 0.6;
    filter: grayscale(100%);
    transition: var(--transition);
}

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

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

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

.faq-question {
    padding: 20px 25px;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

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

.faq-question::after {
    content: '+';
    font-size: 1.5rem;
    font-weight: 300;
    transition: var(--transition);
}

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

.faq-answer {
    padding: 0 25px;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item.active .faq-answer {
    padding: 0 25px 20px;
    max-height: 500px;
}

.faq-answer p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ==================== 联系我们 ==================== */
.contact {
    background: var(--bg-light);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

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

.contact-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 15px;
}

.contact-card p {
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.contact-card img {
    width: 150px;
    height: 150px;
    margin: 15px auto;
    border-radius: 8px;
}

/* ==================== 页脚 ==================== */
.footer {
    background: var(--bg-dark);
    color: var(--white);
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand .logo-text {
    font-size: 1.8rem;
    margin-bottom: 15px;
}

.footer-brand p {
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 20px;
}

.footer-social {
    display: flex;
    gap: 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;
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

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

.footer-links ul li {
    margin-bottom: 12px;
}

.footer-links ul li a {
    color: var(--text-light);
    transition: var(--transition);
}

.footer-links ul li a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

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

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

.footer-qr-item img {
    width: 100px;
    height: 100px;
    border-radius: 8px;
    margin-bottom: 8px;
}

.footer-qr-item span {
    font-size: 0.85rem;
    color: var(--text-light);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.footer-bottom p {
    color: var(--text-light);
    font-size: 0.9rem;
}

.footer-bottom a {
    color: var(--text-light);
    transition: var(--transition);
}

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

/* ==================== 面包屑导航 ==================== */
.breadcrumb {
    padding: 15px 0;
    background: var(--bg-light);
    margin-top: 70px;
}

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

.breadcrumb-list li {
    display: flex;
    align-items: center;
    gap: 10px;
}

.breadcrumb-list li::after {
    content: '/';
    color: var(--text-light);
}

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

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

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

.breadcrumb-list li:last-child {
    color: var(--primary-color);
    font-weight: 500;
}

/* ==================== 内页通用样式 ==================== */
.page-header {
    background: var(--gradient-primary);
    padding: 80px 0;
    text-align: center;
    color: var(--white);
}

.page-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 15px;
}

.page-header p {
    font-size: 1.1rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

.page-content {
    padding: 60px 0;
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 992px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        gap: 15px;
        box-shadow: var(--shadow);
        transform: translateY(-150%);
        transition: var(--transition);
    }
    
    .nav-menu.active {
        transform: translateY(0);
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .hero {
        min-height: 500px;
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .hero-content p {
        font-size: 1rem;
    }
    
    .section {
        padding: 50px 0;
    }
    
    .section-title h2 {
        font-size: 1.8rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-social {
        justify-content: center;
    }
    
    .footer-qr {
        justify-content: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .video-grid {
        grid-template-columns: 1fr;
    }
}

/* ==================== 动画效果 ==================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fadeInUp {
    animation: fadeInUp 0.6s ease forwards;
}

/* 懒加载图片占位 */
.lazy-load {
    opacity: 0;
    transition: opacity 0.3s ease;
}

.lazy-load.loaded {
    opacity: 1;
}

/* ==================== 工具类 ==================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.mt-20 { margin-top: 20px; }
.mb-20 { margin-bottom: 20px; }
.pt-20 { padding-top: 20px; }
.pb-20 { padding-bottom: 20px; }