/* 糖心vlog - 全新原创样式表 */
/* 域名: fxmvcs.cn */

/* CSS变量定义 */
:root {
    --primary: #ff6b9d;
    --primary-dark: #e85a8a;
    --secondary: #ff9a5c;
    --accent: #7c5cff;
    --dark: #1a1a2e;
    --light: #f8f9ff;
    --gray: #6b7280;
    --white: #ffffff;
    --gradient: linear-gradient(135deg, #ff6b9d 0%, #ff9a5c 100%);
    --shadow: 0 4px 20px rgba(255, 107, 157, 0.15);
    --shadow-lg: 0 10px 40px rgba(255, 107, 157, 0.2);
    --radius: 16px;
    --radius-sm: 8px;
}

/* 全局重置 */
*, *::before, *::after {
    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(--dark);
    background: var(--light);
    overflow-x: hidden;
}

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

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

ul, ol {
    list-style: none;
}

/* 容器 */
.wrapper {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

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

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

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

.brand-logo {
    width: 45px;
    height: 45px;
    border-radius: 12px;
    object-fit: cover;
}

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

.nav-links {
    display: flex;
    gap: 35px;
}

.nav-links a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--dark);
    position: relative;
    padding: 5px 0;
}

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--dark);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* 搜索栏 */
.search-section {
    margin-top: 70px;
    padding: 15px 0;
    background: var(--white);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.search-box {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    gap: 10px;
}

.search-input {
    flex: 1;
    padding: 12px 20px;
    border: 2px solid #eee;
    border-radius: 50px;
    font-size: 0.95rem;
    outline: none;
    transition: all 0.3s ease;
}

.search-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(255, 107, 157, 0.1);
}

.search-btn {
    padding: 12px 30px;
    background: var(--gradient);
    color: var(--white);
    border: none;
    border-radius: 50px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

/* 面包屑 */
.breadcrumb {
    padding: 15px 0;
    background: var(--white);
}

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

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

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

.breadcrumb-list li:not(:last-child)::after {
    content: '/';
    margin-left: 10px;
    color: #ddd;
}

/* 英雄区域 */
.hero {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, rgba(255, 107, 157, 0.9) 0%, rgba(255, 154, 92, 0.9) 100%),
                url('/images/hero-bg.jpg') center/cover no-repeat;
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
    color: var(--white);
    padding: 60px 0;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

.hero h1 span {
    display: block;
    font-size: 1.2rem;
    font-weight: 400;
    opacity: 0.9;
    margin-top: 15px;
}

.hero p {
    font-size: 1.1rem;
    opacity: 0.95;
    margin-bottom: 30px;
    line-height: 1.8;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

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

.btn-white:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

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

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

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

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

/* 统计数据 */
.stats-bar {
    background: var(--white);
    padding: 40px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

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

.stat-item h3 {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-item p {
    font-size: 0.95rem;
    color: var(--gray);
    margin-top: 5px;
}

/* 区块通用样式 */
.section {
    padding: 80px 0;
}

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

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

.section-header h2 {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 15px;
}

.section-header p {
    font-size: 1.05rem;
    color: var(--gray);
    max-width: 600px;
    margin: 0 auto;
}

/* 视频卡片 */
.video-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.video-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.4s ease;
}

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

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

.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);
}

.play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.8);
    width: 70px;
    height: 70px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.3s ease;
    cursor: pointer;
}

.play-btn::after {
    content: '';
    width: 0;
    height: 0;
    border-left: 22px solid var(--primary);
    border-top: 14px solid transparent;
    border-bottom: 14px solid transparent;
    margin-left: 5px;
}

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

.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: 0.85rem;
}

.video-info {
    padding: 20px;
}

.video-info h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--dark);
    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;
    font-size: 0.85rem;
    color: var(--gray);
}

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

/* 特色区块 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

.feature-box {
    background: var(--white);
    padding: 35px 25px;
    border-radius: var(--radius);
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

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

.feature-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 2rem;
}

.feature-box h3 {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 10px;
}

.feature-box p {
    font-size: 0.9rem;
    color: var(--gray);
    line-height: 1.7;
}

/* 专家团队 */
.experts-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

.expert-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    text-align: center;
    transition: all 0.3s ease;
}

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

.expert-avatar {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
}

.expert-info {
    padding: 25px 20px;
}

.expert-info h3 {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 5px;
}

.expert-info .role {
    font-size: 0.9rem;
    color: var(--primary);
    margin-bottom: 15px;
}

.expert-info p {
    font-size: 0.85rem;
    color: var(--gray);
    line-height: 1.6;
}

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

.expert-btns a {
    padding: 8px 16px;
    font-size: 0.85rem;
    border-radius: 20px;
}

/* 用户评价 */
.reviews-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

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

.review-stars {
    color: #ffc107;
    font-size: 1.2rem;
    margin-bottom: 15px;
}

.review-card p {
    font-size: 0.95rem;
    color: var(--dark);
    line-height: 1.8;
    margin-bottom: 20px;
}

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

.review-author img {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    object-fit: cover;
}

.review-author h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--dark);
}

.review-author span {
    font-size: 0.85rem;
    color: var(--gray);
}

/* 联系区块 */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.contact-box {
    background: var(--white);
    padding: 35px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.contact-box h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--light);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 15px;
    font-size: 0.95rem;
    color: var(--gray);
}

.contact-item strong {
    color: var(--dark);
}

.qr-codes {
    display: flex;
    gap: 20px;
    justify-content: center;
}

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

.qr-item img {
    width: 120px;
    height: 120px;
    border-radius: var(--radius-sm);
    margin-bottom: 10px;
}

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

/* 合作伙伴 */
.partners-section {
    padding: 60px 0;
    background: var(--white);
}

.partners-img {
    max-width: 100%;
    border-radius: var(--radius);
}

/* 页脚 */
.footer {
    background: var(--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 {
    max-width: 300px;
}

.footer-brand .brand {
    margin-bottom: 20px;
}

.footer-brand p {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
}

.footer-col h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 20px;
}

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

.footer-col ul li a {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
}

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

.footer-qr {
    display: flex;
    gap: 15px;
}

.footer-qr img {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-sm);
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.footer-bottom p {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
}

.social-links {
    display: flex;
    gap: 15px;
}

.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;
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

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

/* 页面头部 */
.page-hero {
    background: var(--gradient);
    padding: 120px 0 60px;
    text-align: center;
    color: var(--white);
}

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

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

/* 响应式设计 */
@media (max-width: 1024px) {
    .video-grid,
    .features-grid,
    .experts-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        gap: 15px;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero-btns {
        flex-direction: column;
    }
    
    .video-grid,
    .features-grid,
    .experts-grid,
    .reviews-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-brand {
        max-width: 100%;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .section {
        padding: 50px 0;
    }
    
    .section-header h2 {
        font-size: 1.8rem;
    }
}

@media (max-width: 480px) {
    .hero {
        min-height: 500px;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .stat-item h3 {
        font-size: 1.8rem;
    }
    
    .qr-codes {
        flex-direction: column;
        align-items: center;
    }
}

/* 懒加载占位 */
.lazy-load {
    opacity: 0;
    transition: opacity 0.5s ease;
}

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

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

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