/* 吃瓜爆料话题合集每日更新 - 主样式表 */
/* Reset */
* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f5f5f5;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; height: auto; }

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

/* Header */
.header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 15px;
}

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

.logo img {
    height: 50px;
    width: auto;
}

.logo-text {
    color: #fff;
    font-size: 18px;
    font-weight: bold;
}

/* Navigation */
.nav {
    display: flex;
    gap: 25px;
}

.nav a {
    color: #fff;
    font-size: 15px;
    padding: 8px 15px;
    border-radius: 20px;
    transition: all 0.3s;
}

.nav a:hover,
.nav a.active {
    background: rgba(255,255,255,0.2);
}

/* Search Box */
.search-box {
    display: flex;
    align-items: center;
    background: rgba(255,255,255,0.2);
    border-radius: 25px;
    padding: 8px 15px;
    max-width: 300px;
}

.search-box input {
    background: transparent;
    border: none;
    color: #fff;
    outline: none;
    width: 200px;
    font-size: 14px;
}

.search-box input::placeholder {
    color: rgba(255,255,255,0.7);
}

.search-box button {
    background: transparent;
    border: none;
    color: #fff;
    cursor: pointer;
    font-size: 16px;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 60px 0;
    color: #fff;
    text-align: center;
}

.hero h1 {
    font-size: 42px;
    margin-bottom: 15px;
}

.hero p {
    font-size: 18px;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto 30px;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 50px;
    margin-top: 30px;
}

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

.stat-item .number {
    font-size: 36px;
    font-weight: bold;
}

.stat-item .label {
    font-size: 14px;
    opacity: 0.8;
}

/* Section */
.section {
    padding: 50px 0;
}

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

.section-header h2 {
    font-size: 32px;
    color: #333;
    margin-bottom: 10px;
}

.section-header h3 {
    font-size: 28px;
    color: #333;
    margin-bottom: 10px;
}

.section-header p {
    color: #666;
    font-size: 16px;
}

/* Video Grid */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
}

/* Video Card */
.video-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    transition: transform 0.3s, box-shadow 0.3s;
    cursor: pointer;
}

.video-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.video-thumb {
    position: relative;
    padding-top: 56.25%;
    background: #000;
    overflow: hidden;
}

.video-thumb img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

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

/* Video Play Button */
.video-play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: rgba(102, 126, 234, 0.9);
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.video-play-btn::after {
    content: '';
    width: 0;
    height: 0;
    border-left: 20px solid #fff;
    border-top: 12px solid transparent;
    border-bottom: 12px solid transparent;
    margin-left: 5px;
}

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

/* Video Duration */
.video-duration {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: rgba(0,0,0,0.7);
    color: #fff;
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 12px;
}

/* Video Update Tag */
.video-update-tag {
    position: absolute;
    top: 10px;
    left: 10px;
    background: rgba(255,107,107,0.9);
    color: #fff;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
}

.video-update-tag.yesterday {
    background: rgba(102,126,234,0.9);
}

/* Video Info */
.video-info {
    padding: 15px;
}

.video-title {
    font-size: 15px;
    color: #333;
    margin-bottom: 10px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: #999;
}

.video-stats {
    display: flex;
    gap: 12px;
}

.video-tag {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 11px;
}

/* Category Grid */
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 20px;
}

.category-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    padding: 25px 20px;
    border-radius: 12px;
    text-align: center;
    transition: transform 0.3s;
}

.category-card:hover {
    transform: translateY(-3px);
}

.category-icon {
    font-size: 36px;
    margin-bottom: 10px;
}

.category-name {
    font-size: 16px;
    font-weight: 500;
}

/* Expert Grid */
.expert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
}

.expert-card {
    background: #fff;
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
}

.expert-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 15px;
    border: 3px solid #667eea;
}

.expert-badge {
    display: inline-block;
    background: #667eea;
    color: #fff;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 11px;
    margin-bottom: 8px;
}

.expert-badge.star {
    background: #ff6b6b;
}

.expert-name {
    font-size: 20px;
    color: #333;
    margin-bottom: 5px;
}

.expert-title {
    font-size: 14px;
    color: #667eea;
    margin-bottom: 10px;
}

.expert-desc {
    font-size: 13px;
    color: #666;
    line-height: 1.6;
}

.expert-works {
    font-size: 12px;
    color: #999;
    margin-top: 5px;
}

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

.expert-btn {
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.3s;
}

.expert-btn.primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    border: none;
}

.expert-btn.secondary {
    background: transparent;
    color: #667eea;
    border: 1px solid #667eea;
}

/* Partners */
.partner-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
    align-items: center;
}

.partner-logo {
    height: 50px;
    opacity: 0.6;
    transition: opacity 0.3s;
    filter: grayscale(100%);
}

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

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

.faq-item {
    background: #fff;
    border-radius: 10px;
    margin-bottom: 15px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.faq-question {
    padding: 20px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 500;
}

.faq-question::after {
    content: '+';
    font-size: 24px;
    color: #667eea;
}

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

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

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

/* Reviews */
.review-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 25px;
}

.review-card {
    background: #fff;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
}

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

.review-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 20px;
}

.review-name {
    font-weight: 500;
}

.review-rating {
    color: #ffc107;
}

.review-content {
    color: #666;
    font-size: 14px;
    line-height: 1.6;
}

/* Footer */
.footer {
    background: #1a1a2e;
    color: #fff;
    padding: 50px 0 30px;
}

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

.footer-col h4 {
    font-size: 16px;
    margin-bottom: 20px;
    color: #fff;
}

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

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

.footer-col span,
.footer-col a {
    color: #aaa;
    font-size: 14px;
    transition: color 0.3s;
}

.footer-col a:hover {
    color: #667eea;
}

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

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

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

.qr-item p {
    font-size: 12px;
    color: #aaa;
}

.footer-bottom {
    border-top: 1px solid #333;
    padding-top: 20px;
    text-align: center;
}

.footer-bottom p {
    color: #aaa;
    font-size: 13px;
    margin-bottom: 10px;
}

/* Responsive */
@media (max-width: 768px) {
    .header-inner {
        flex-direction: column;
        gap: 15px;
    }
    
    .nav {
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
    }
    
    .nav a {
        font-size: 13px;
        padding: 6px 12px;
    }
    
    .hero h1 {
        font-size: 28px;
    }
    
    .hero p {
        font-size: 15px;
    }
    
    .hero-stats {
        flex-wrap: wrap;
        gap: 20px;
    }
    
    .section-header h2 {
        font-size: 24px;
    }
    
    .video-grid {
        grid-template-columns: 1fr;
    }
    
    .expert-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
}

/* Video Player Overlay */
.video-player-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.9);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.video-player-overlay.active {
    display: flex;
}

.video-player-container {
    position: relative;
    width: 90%;
    max-width: 900px;
    background: #000;
    border-radius: 10px;
    overflow: hidden;
}

.video-player-close {
    position: absolute;
    top: -40px;
    right: 0;
    color: #fff;
    font-size: 30px;
    cursor: pointer;
}

.fake-video-player {
    width: 100%;
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #fff;
}

.fake-video-player .play-icon {
    width: 80px;
    height: 80px;
    background: rgba(102, 126, 234, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    cursor: pointer;
    transition: transform 0.3s;
}

.fake-video-player .play-icon:hover {
    transform: scale(1.1);
}

.fake-video-player .play-icon::after {
    content: '';
    width: 0;
    height: 0;
    border-left: 25px solid #fff;
    border-top: 15px solid transparent;
    border-bottom: 15px solid transparent;
    margin-left: 5px;
}

.fake-video-player .video-title-overlay {
    font-size: 18px;
    text-align: center;
    padding: 0 20px;
}

/* Progress Bar */
.video-progress {
    width: 100%;
    height: 4px;
    background: #333;
    position: absolute;
    bottom: 50px;
}

.video-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, #667eea, #764ba2);
    width: 0%;
    transition: width 0.1s;
}

/* Video Controls */
.video-controls {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0,0,0,0.7);
    padding: 10px 20px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.control-btn {
    background: none;
    border: none;
    color: #fff;
    font-size: 18px;
    cursor: pointer;
}

.time-display {
    color: #fff;
    font-size: 13px;
}

.volume-slider {
    width: 80px;
    height: 4px;
    background: #555;
    border-radius: 2px;
    cursor: pointer;
}

.fullscreen-btn {
    margin-left: auto;
}


/* Filter Tabs */
.filter-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

.filter-tab {
    padding: 10px 25px;
    border: 2px solid #667eea;
    border-radius: 25px;
    background: transparent;
    color: #667eea;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s;
}

.filter-tab:hover,
.filter-tab.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    border-color: transparent;
}

/* Step Grid */
.step-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 25px;
}

.step-card {
    background: #fff;
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    position: relative;
}

.step-number {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: bold;
    margin: 0 auto 20px;
}

.step-card h4 {
    font-size: 18px;
    color: #333;
    margin-bottom: 10px;
}

.step-card p {
    font-size: 14px;
    color: #666;
}

/* Live Tag */
.video-duration.live {
    background: rgba(255, 0, 0, 0.9);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.video-update-tag.hot {
    background: rgba(255, 107, 107, 0.9);
}