/* 糖心Vlog 官网样式 */
:root {
    --primary-color: #ff4d4f;
    --text-color: #333;
    --bg-color: #f5f5f5;
    --white: #fff;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--text-color);
    background-color: var(--bg-color);
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: inherit;
}

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

/* Header */
header {
    background-color: var(--white);
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
}

nav ul {
    display: flex;
    list-style: none;
    gap: 20px;
}

nav a {
    font-weight: 500;
    transition: color 0.3s;
}

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

/* Search Box */
.search-box {
    background: var(--white);
    padding: 15px 0;
    border-bottom: 1px solid #eee;
}

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

.search-input {
    width: 60%;
    padding: 10px 15px;
    border: 1px solid #ddd;
    border-radius: 20px 0 0 20px;
    outline: none;
}

.search-btn {
    padding: 10px 25px;
    background: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 0 20px 20px 0;
    cursor: pointer;
}

/* Banner */
.banner {
    background: linear-gradient(135deg, #ff7a7a, #ff4d4f);
    color: var(--white);
    padding: 80px 0;
    text-align: center;
}

.banner h1 {
    font-size: 48px;
    margin-bottom: 20px;
}

.banner p {
    font-size: 20px;
    margin-bottom: 30px;
    opacity: 0.9;
}

.cta-btn {
    display: inline-block;
    padding: 15px 40px;
    background: var(--white);
    color: var(--primary-color);
    font-size: 18px;
    font-weight: bold;
    border-radius: 30px;
    transition: transform 0.3s;
}

.cta-btn:hover {
    transform: translateY(-3px);
}

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

.section-title {
    text-align: center;
    font-size: 32px;
    margin-bottom: 40px;
    color: var(--text-color);
}

/* Video Cards */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
}

.video-card {
    background: var(--white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    transition: transform 0.3s;
}

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

.video-thumb {
    position: relative;
    width: 100%;
    padding-top: 56.25%; /* 16:9 */
    background: #000;
    overflow: hidden;
}

.video-thumb img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: rgba(0,0,0,0.6);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s;
}

.play-btn::after {
    content: '';
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 15px 0 15px 25px;
    border-color: transparent transparent transparent #fff;
    margin-left: 5px;
}

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

.video-info {
    padding: 15px;
}

.video-title {
    font-size: 16px;
    font-weight: bold;
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-meta {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: #888;
}

/* Features */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--white);
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.feature-icon {
    font-size: 40px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

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

.faq-item {
    background: var(--white);
    margin-bottom: 15px;
    border-radius: 8px;
    overflow: hidden;
}

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

.faq-a {
    padding: 0 20px 20px;
    display: none;
    color: #666;
}

/* Reviews */
.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.review-card {
    background: var(--white);
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

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

.user-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: #ddd;
    margin-right: 15px;
}

.user-info h4 {
    margin: 0;
    font-size: 16px;
}

.stars {
    color: #ffc107;
    font-size: 14px;
}

/* Footer */
footer {
    background: #222;
    color: #ccc;
    padding: 60px 0 20px;
}

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

.footer-col h3 {
    color: var(--white);
    margin-bottom: 20px;
    font-size: 18px;
}

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

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

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

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #444;
    font-size: 14px;
}

/* Breadcrumb */
.breadcrumb {
    padding: 20px 0;
    font-size: 14px;
    color: #666;
}

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

/* Page Content */
.page-content {
    background: var(--white);
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    margin-bottom: 60px;
}

.page-content h2 {
    margin: 30px 0 15px;
    color: var(--text-color);
}

.page-content p {
    margin-bottom: 15px;
    color: #555;
}

/* Responsive */
@media (max-width: 768px) {
    .header-inner {
        flex-direction: column;
        height: auto;
        padding: 15px 0;
    }
    
    nav ul {
        margin-top: 15px;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .banner h1 {
        font-size: 32px;
    }
    
    .search-input {
        width: 80%;
    }
}