/* 海角社区 - 全新原创样式表 */
/* 主题：温暖珊瑚橙色系 */

:root {
    --primary-color: #ff6b4a;
    --secondary-color: #ff9a7b;
    --accent-color: #ffd4c4;
    --dark-color: #1a1a2e;
    --light-color: #fff5f2;
    --text-color: #333333;
    --text-light: #666666;
    --white: #ffffff;
    --gradient-primary: linear-gradient(135deg, #ff6b4a 0%, #ff9a7b 50%, #ffb89a 100%);
    --gradient-hero: linear-gradient(180deg, rgba(26,26,46,0.9) 0%, rgba(26,26,46,0.7) 100%);
    --shadow-soft: 0 4px 20px rgba(255,107,74,0.15);
    --shadow-card: 0 8px 30px rgba(0,0,0,0.1);
    --border-radius: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--light-color);
    color: var(--text-color);
    line-height: 1.8;
    font-size: 16px;
}

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

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

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 头部导航 */
.header {
    background: var(--white);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0,0,0,0.08);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
}

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

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

.logo-text {
    font-size: 24px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 8px;
}

.nav-menu li a {
    display: block;
    padding: 10px 20px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-color);
    border-radius: 25px;
    transition: var(--transition);
}

.nav-menu li a:hover,
.nav-menu li a.active {
    background: var(--gradient-primary);
    color: var(--white);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.btn-login {
    padding: 10px 24px;
    border: 2px solid var(--primary-color);
    border-radius: 25px;
    color: var(--primary-color);
    font-weight: 600;
    transition: var(--transition);
}

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

.btn-register {
    padding: 10px 24px;
    background: var(--gradient-primary);
    border-radius: 25px;
    color: var(--white);
    font-weight: 600;
    transition: var(--transition);
}

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

/* 搜索框 */
.search-bar {
    background: var(--gradient-primary);
    padding: 16px 0;
}

.search-container {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    gap: 12px;
}

.search-input {
    flex: 1;
    padding: 14px 24px;
    border: none;
    border-radius: 30px;
    font-size: 15px;
    outline: none;
    background: var(--white);
}

.search-btn {
    padding: 14px 32px;
    background: var(--dark-color);
    color: var(--white);
    border: none;
    border-radius: 30px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.search-btn:hover {
    background: #2d2d4a;
    transform: scale(1.02);
}

/* 英雄区域 */
.hero {
    margin-top: 70px;
    position: relative;
    height: 600px;
    background: url('../images/hero_bg.jpg') center/cover no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-hero);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--white);
    max-width: 800px;
    padding: 0 24px;
}

.hero h1 {
    font-size: 56px;
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.2;
}

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

.hero p {
    font-size: 20px;
    opacity: 0.9;
    margin-bottom: 36px;
    line-height: 1.6;
}

.hero-btns {
    display: flex;
    gap: 20px;
    justify-content: center;
}

.btn-primary {
    padding: 16px 40px;
    background: var(--gradient-primary);
    color: var(--white);
    border-radius: 30px;
    font-size: 17px;
    font-weight: 600;
    transition: var(--transition);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(255,107,74,0.4);
}

.btn-outline {
    padding: 16px 40px;
    border: 2px solid var(--white);
    color: var(--white);
    border-radius: 30px;
    font-size: 17px;
    font-weight: 600;
    transition: var(--transition);
}

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

/* 统计数据 */
.stats-bar {
    background: var(--white);
    padding: 40px 0;
    margin-top: -60px;
    position: relative;
    z-index: 2;
    border-radius: var(--border-radius);
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    box-shadow: var(--shadow-card);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    text-align: center;
}

.stat-item h3 {
    font-size: 42px;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.stat-item p {
    font-size: 15px;
    color: var(--text-light);
}

/* 章节标题 */
.section {
    padding: 80px 0;
}

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

.section-header h2 {
    font-size: 36px;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 16px;
}

.section-header p {
    font-size: 17px;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* 视频卡片网格 */
.video-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

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

.video-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

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

.video-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

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

.play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.video-card:hover .play-btn {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
}

.play-btn::after {
    content: '';
    width: 0;
    height: 0;
    border-left: 18px solid var(--white);
    border-top: 11px solid transparent;
    border-bottom: 11px solid transparent;
    margin-left: 4px;
}

.video-duration {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: rgba(0,0,0,0.75);
    color: var(--white);
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 13px;
    font-weight: 500;
}

.video-info {
    padding: 18px;
}

.video-info h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 10px;
    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: 16px;
    font-size: 13px;
    color: var(--text-light);
}

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

/* 服务卡片 */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--shadow-card);
    transition: var(--transition);
    border: 2px solid transparent;
}

.service-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    font-size: 36px;
}

.service-card h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 14px;
    color: var(--dark-color);
}

.service-card p {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.7;
}

/* 创作者展示 */
.creators-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 24px;
}

.creator-card {
    text-align: center;
    transition: var(--transition);
}

.creator-card:hover {
    transform: translateY(-5px);
}

.creator-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    overflow: hidden;
    margin: 0 auto 16px;
    border: 4px solid var(--accent-color);
    transition: var(--transition);
}

.creator-card:hover .creator-avatar {
    border-color: var(--primary-color);
}

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

.creator-card h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 6px;
}

.creator-card p {
    font-size: 13px;
    color: var(--text-light);
}

/* 专家团队 */
.experts-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.expert-card {
    display: flex;
    gap: 30px;
    background: var(--white);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-card);
}

.expert-photo {
    width: 160px;
    height: 160px;
    border-radius: var(--border-radius);
    overflow: hidden;
    flex-shrink: 0;
}

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

.expert-info h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--dark-color);
}

.expert-title {
    font-size: 14px;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 12px;
}

.expert-info p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 16px;
}

.expert-actions {
    display: flex;
    gap: 12px;
}

.btn-small {
    padding: 8px 20px;
    font-size: 13px;
    border-radius: 20px;
    font-weight: 600;
}

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

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

/* FAQ */
.faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: var(--white);
    border-radius: var(--border-radius);
    margin-bottom: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-card);
}

.faq-question {
    padding: 24px 30px;
    font-size: 17px;
    font-weight: 600;
    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: 24px;
    color: var(--primary-color);
}

.faq-answer {
    padding: 0 30px 24px;
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.8;
}

/* 用户评价 */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.testimonial-card {
    background: var(--white);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-card);
}

.testimonial-rating {
    color: #ffc107;
    font-size: 18px;
    margin-bottom: 16px;
}

.testimonial-card p {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 20px;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 14px;
}

.testimonial-author img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
}

.testimonial-author h4 {
    font-size: 15px;
    font-weight: 600;
}

.testimonial-author span {
    font-size: 13px;
    color: var(--text-light);
}

/* 联系我们 */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 50px;
}

.contact-info h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--dark-color);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 20px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
}

.contact-item p {
    font-size: 14px;
    color: var(--text-light);
}

.qr-codes {
    display: flex;
    gap: 30px;
    margin-top: 30px;
}

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

.qr-item img {
    width: 140px;
    height: 140px;
    border-radius: 12px;
    margin-bottom: 10px;
}

.qr-item p {
    font-size: 14px;
    color: var(--text-light);
}

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

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 50px;
    margin-bottom: 40px;
}

.footer-brand p {
    font-size: 14px;
    opacity: 0.8;
    line-height: 1.8;
    margin-top: 16px;
}

.footer-links h4 {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 20px;
}

.footer-links ul {
    list-style: none;
}

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

.footer-links a {
    font-size: 14px;
    opacity: 0.8;
    transition: var(--transition);
}

.footer-links a:hover {
    opacity: 1;
    color: var(--primary-color);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
    opacity: 0.8;
}

.social-links {
    display: flex;
    gap: 16px;
}

.social-links 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);
}

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

/* 面包屑 */
.breadcrumb {
    padding: 20px 0;
    background: var(--white);
    margin-top: 70px;
}

.breadcrumb-list {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
}

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

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

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

/* 页面标题 */
.page-header {
    background: var(--gradient-primary);
    padding: 60px 0;
    text-align: center;
    color: var(--white);
}

.page-header h1 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 12px;
}

.page-header p {
    font-size: 17px;
    opacity: 0.9;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .video-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .creators-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 992px) {
    .nav-menu {
        display: none;
    }
    
    .hero h1 {
        font-size: 42px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .video-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .experts-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .hero {
        height: 500px;
    }
    
    .hero h1 {
        font-size: 32px;
    }
    
    .hero-btns {
        flex-direction: column;
        gap: 12px;
    }
    
    .stats-bar {
        margin-top: -40px;
    }
    
    .stat-item h3 {
        font-size: 32px;
    }
    
    .section {
        padding: 50px 0;
    }
    
    .section-header h2 {
        font-size: 28px;
    }
    
    .video-grid,
    .services-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .creators-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .header-inner {
        height: 60px;
    }
    
    .logo-text {
        font-size: 20px;
    }
    
    .header-actions {
        gap: 8px;
    }
    
    .btn-login,
    .btn-register {
        padding: 8px 16px;
        font-size: 13px;
    }
    
    .search-container {
        flex-direction: column;
    }
    
    .creators-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .expert-card {
        flex-direction: column;
        text-align: center;
    }
    
    .expert-photo {
        margin: 0 auto;
    }
}