/* 糖心vlog - 外部样式表 */
/* 域名: emuqvr.cn */

/* CSS Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --primary-color: #FF6B9D;
    --secondary-color: #FF8E72;
    --accent-color: #FFB6C1;
    --text-color: #333;
    --text-light: #666;
    --bg-color: #fff;
    --bg-light: #f8f9fa;
    --bg-dark: #1a1a2e;
    --gradient-primary: linear-gradient(135deg, #FF6B9D 0%, #FF8E72 100%);
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.15);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --transition: all 0.3s ease;
}

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-color);
    background: var(--bg-color);
}

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

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

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background: var(--bg-color);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

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

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

.nav-menu a {
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    color: var(--text-color);
}

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

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
}

/* Search Bar */
.search-bar {
    background: var(--bg-light);
    padding: 15px 0;
    border-bottom: 1px solid #eee;
}

.search-bar .container {
    display: flex;
    justify-content: center;
}

.search-form {
    display: flex;
    max-width: 600px;
    width: 100%;
    background: #fff;
    border-radius: 50px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.search-form input {
    flex: 1;
    padding: 12px 24px;
    border: none;
    outline: none;
    font-size: 15px;
}

.search-form button {
    padding: 12px 28px;
    background: var(--gradient-primary);
    border: none;
    color: #fff;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.search-form button:hover {
    opacity: 0.9;
}

/* Breadcrumb */
.breadcrumb {
    padding: 12px 0;
    background: var(--bg-light);
    font-size: 14px;
}

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

.breadcrumb span {
    color: var(--text-light);
    margin: 0 8px;
}

/* Hero Section */
.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(255,107,157,0.7) 0%, rgba(255,142,114,0.5) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: #fff;
    padding: 20px;
}

.hero h1 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 16px;
    text-shadow: 2px 2px 8px rgba(0,0,0,0.3);
}

.hero p {
    font-size: 20px;
    max-width: 600px;
    margin-bottom: 24px;
    text-shadow: 1px 1px 4px rgba(0,0,0,0.3);
}

.hero-btn {
    display: inline-block;
    padding: 14px 36px;
    background: #fff;
    color: var(--primary-color);
    border-radius: 50px;
    font-weight: 600;
    font-size: 16px;
    box-shadow: var(--shadow-md);
}

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

/* Stats Section */
.stats {
    background: var(--bg-dark);
    padding: 40px 0;
}

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

.stat-item h3 {
    font-size: 36px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-item p {
    margin-top: 8px;
    color: rgba(255,255,255,0.7);
}

/* Section Common */
.section {
    padding: 60px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 40px;
}

.section-header h2 {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 12px;
}

.section-header p {
    color: var(--text-light);
    font-size: 16px;
}

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

/* Video Grid */
.video-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

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

.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: var(--transition);
}

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

.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: var(--transition);
}

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

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

.video-duration {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background: rgba(0,0,0,0.7);
    color: #fff;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
}

.video-info {
    padding: 16px;
}

.video-info h3 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-meta {
    display: flex;
    gap: 16px;
    color: var(--text-light);
    font-size: 13px;
}

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

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.service-card {
    background: #fff;
    padding: 30px;
    border-radius: var(--radius-md);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.service-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 28px;
    color: #fff;
}

.service-card h3 {
    font-size: 18px;
    margin-bottom: 12px;
}

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

/* Expert Section */
.expert-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

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

.expert-card:hover {
    box-shadow: var(--shadow-md);
}

.expert-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    margin: 30px auto 20px;
    overflow: hidden;
    border: 4px solid var(--accent-color);
}

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

.expert-info {
    padding: 0 20px 30px;
}

.expert-info h3 {
    font-size: 18px;
    margin-bottom: 8px;
}

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

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

.expert-stats {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 16px;
    font-size: 13px;
}

.expert-stats span {
    color: var(--text-light);
}

.expert-stats strong {
    color: var(--primary-color);
}

.expert-btn {
    display: inline-block;
    padding: 8px 24px;
    background: var(--gradient-primary);
    color: #fff;
    border-radius: 50px;
    font-size: 14px;
}

/* Community Features */
.community-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.community-card {
    display: flex;
    align-items: center;
    gap: 20px;
    background: #fff;
    padding: 24px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.community-card:hover {
    box-shadow: var(--shadow-md);
}

.community-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: #fff;
    flex-shrink: 0;
}

.community-content h3 {
    font-size: 17px;
    margin-bottom: 8px;
}

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

/* Reviews */
.reviews-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.review-card {
    background: #fff;
    padding: 24px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.review-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.review-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 600;
}

.review-user h4 {
    font-size: 15px;
}

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

.review-stars {
    color: #FFD700;
    margin-bottom: 12px;
}

.review-card p {
    color: var(--text-light);
    font-size: 14px;
    line-height: 1.7;
}

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

.faq-item {
    background: #fff;
    margin-bottom: 16px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.faq-question {
    padding: 20px 24px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-question::after {
    content: "+";
    font-size: 24px;
    color: var(--primary-color);
}

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

.faq-answer {
    padding: 0 24px 20px;
    color: var(--text-light);
    display: none;
}

.faq-item.active .faq-answer {
    display: block;
}

/* Contact Section */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.contact-info h3 {
    font-size: 20px;
    margin-bottom: 20px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 16px;
}

.contact-item i {
    width: 40px;
    height: 40px;
    background: var(--bg-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
}

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

.contact-item strong {
    color: var(--text-color);
    display: block;
    margin-bottom: 4px;
}

.qrcode-grid {
    display: flex;
    gap: 30px;
}

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

.qrcode-item img {
    width: 150px;
    height: 150px;
    border-radius: var(--radius-sm);
    margin-bottom: 8px;
}

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

/* Partners */
.partners-grid {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 40px;
    opacity: 0.6;
}

.partners-grid img {
    height: 40px;
    filter: grayscale(100%);
    transition: var(--transition);
}

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

/* Footer */
.footer {
    background: var(--bg-dark);
    color: #fff;
    padding: 50px 0 20px;
}

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

.footer-brand img {
    height: 40px;
    margin-bottom: 16px;
}

.footer-brand p {
    color: rgba(255,255,255,0.7);
    font-size: 14px;
    line-height: 1.7;
}

.footer-links h4 {
    font-size: 16px;
    margin-bottom: 20px;
}

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

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

.footer-links a {
    color: rgba(255,255,255,0.7);
    font-size: 14px;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
    color: rgba(255,255,255,0.5);
}

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

.social-links a {
    width: 36px;
    height: 36px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
}

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

/* Responsive */
@media (max-width: 1024px) {
    .video-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .header-inner {
        padding: 10px 15px;
    }
    
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-md);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero {
        height: 400px;
    }
    
    .hero h1 {
        font-size: 32px;
    }
    
    .hero p {
        font-size: 16px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .video-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    
    .services-grid,
    .expert-grid,
    .reviews-grid {
        grid-template-columns: 1fr;
    }
    
    .community-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .video-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-item h3 {
        font-size: 28px;
    }
    
    .section-header h2 {
        font-size: 24px;
    }
    
    .qrcode-grid {
        flex-direction: column;
        align-items: center;
    }
}

/* Lazy Load */
.lazy {
    opacity: 0;
    transition: opacity 0.3s;
}

.lazy.loaded {
    opacity: 1;
}

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

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