/* 
 * 91爆料网 官方样式表
 * 颜色方案: 深夜蓝 #0A0E1A, 亮橙色 #FF6B00, 纯白 #FFFFFF
 */

:root {
    --primary-color: #FF6B00;
    --primary-hover: #E65A00;
    --dark-bg: #0A0E1A;
    --dark-lighter: #151A28;
    --text-main: #333333;
    --text-light: #666666;
    --text-white: #FFFFFF;
    --text-gray: #CCCCCC;
    --bg-light: #F8F9FA;
    --border-color: #EEEEEE;
    --transition: all 0.3s ease;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Microsoft YaHei", sans-serif;
    line-height: 1.6;
    color: var(--text-main);
    background-color: #FFFFFF;
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

.text-center { text-align: center; }
.mt-4 { margin-top: 1.5rem; }
.mt-5 { margin-top: 3rem; }
.mb-4 { margin-bottom: 1.5rem; }
.bg-light { background-color: var(--bg-light); }

/* 按钮样式 */
.btn, .btn-small {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 4px;
    font-weight: bold;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

.btn-small {
    padding: 8px 16px;
    font-size: 14px;
}

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

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

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

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

/* 头部导航 */
.site-header {
    background-color: var(--dark-bg);
    color: var(--text-white);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.5);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo a {
    display: flex;
    align-items: center;
    color: var(--text-white);
    text-decoration: none;
}

.logo img {
    border-radius: 50%;
    margin-right: 10px;
}

.brand-name {
    font-size: 24px;
    font-weight: bold;
    letter-spacing: 1px;
}

.main-nav ul {
    display: flex;
    gap: 30px;
}

.main-nav a {
    color: var(--text-white);
    font-weight: 500;
    font-size: 16px;
}

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

.search-box {
    display: flex;
}

.search-box input {
    padding: 8px 12px;
    border: none;
    border-radius: 4px 0 0 4px;
    outline: none;
    width: 200px;
}

.search-box button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 0 15px;
    border-radius: 0 4px 4px 0;
    cursor: pointer;
    font-weight: bold;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background-color: white;
    transition: 0.3s;
}

.breadcrumb {
    padding: 15px;
    font-size: 14px;
    color: var(--text-light);
}

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

/* 首页 Hero */
.hero-section {
    height: 600px;
    background-size: cover;
    background-position: center;
    position: relative;
    display: flex;
    align-items: center;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, rgba(10,14,26,0.9) 0%, rgba(10,14,26,0.4) 100%);
}

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

.hero-content h1 {
    font-size: 48px;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 20px;
    margin-bottom: 30px;
    color: var(--text-gray);
}

.hero-btns {
    display: flex;
    gap: 20px;
    margin-bottom: 40px;
}

.hero-stats {
    display: flex;
    gap: 40px;
}

.stat-item strong {
    display: block;
    font-size: 28px;
    color: var(--primary-color);
}

.stat-item span {
    font-size: 14px;
    color: var(--text-gray);
}

/* 通用区块 */
.section {
    padding: 80px 0;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 40px;
}

.section-title {
    font-size: 32px;
    color: var(--dark-bg);
    margin-bottom: 15px;
    position: relative;
    padding-bottom: 15px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 4px;
    background-color: var(--primary-color);
}

.text-center .section-title::after {
    left: 50%;
    transform: translateX(-50%);
}

.section-desc {
    font-size: 18px;
    color: var(--text-light);
    margin-bottom: 40px;
}

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

.feature-card {
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
    transition: var(--transition);
    border-bottom: 3px solid transparent;
}

.feature-card:hover {
    transform: translateY(-10px);
    border-bottom-color: var(--primary-color);
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
}

.feature-icon {
    font-size: 40px;
    margin-bottom: 20px;
}

.feature-card h3 {
    margin-bottom: 15px;
    font-size: 20px;
}

/* 视频卡片 */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.video-card {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    transition: var(--transition);
}

.video-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.15);
}

.video-thumb-wrap {
    position: relative;
    cursor: pointer;
}

.video-thumb {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.video-duration {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: rgba(0,0,0,0.8);
    color: white;
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: bold;
}

.play-btn-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 50px;
    height: 50px;
    background: rgba(255, 107, 0, 0.9);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    opacity: 0;
    transition: var(--transition);
}

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

.video-info {
    padding: 20px;
    position: relative;
    background: #fff;
    z-index: 2;
}

.video-tag {
    display: inline-block;
    background: var(--bg-light);
    color: var(--primary-color);
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: bold;
    margin-bottom: 10px;
}

.video-title {
    font-size: 18px;
    margin-bottom: 10px;
    line-height: 1.4;
}

.video-title a {
    color: var(--text-main);
}

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

.video-meta {
    display: flex;
    justify-content: space-between;
    color: var(--text-light);
    font-size: 13px;
    margin-bottom: 10px;
}

.video-desc {
    font-size: 14px;
    color: var(--text-light);
}

/* AI 模块 */
.ai-section {
    background-color: var(--dark-bg);
    color: var(--text-white);
}

.ai-section .section-title {
    color: var(--text-white);
}

.ai-content-wrap {
    display: flex;
    align-items: center;
    gap: 50px;
}

.ai-text {
    flex: 1;
}

.ai-image {
    flex: 1;
}

.ai-image img {
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.5);
}

.ai-features li {
    margin-bottom: 15px;
    padding-left: 25px;
    position: relative;
}

.ai-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

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

.expert-card {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    text-align: center;
}

.expert-avatar {
    width: 100%;
    height: 300px;
    object-fit: cover;
}

.expert-info {
    padding: 25px;
}

.expert-role {
    display: block;
    color: var(--primary-color);
    font-weight: bold;
    margin: 5px 0 15px;
}

.expert-actions {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 20px;
}

/* 步骤指南 */
.guide-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}

.step-item {
    background: #fff;
    padding: 30px 20px;
    border-radius: 8px;
    text-align: center;
    position: relative;
}

.step-num {
    font-size: 48px;
    font-weight: 900;
    color: rgba(255, 107, 0, 0.1);
    position: absolute;
    top: 10px;
    right: 20px;
}

/* Logo墙 */
.logo-wall {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
}

.partner-logo {
    background: #fff;
    padding: 15px 30px;
    border-radius: 4px;
    font-weight: bold;
    color: var(--text-light);
    border: 1px solid var(--border-color);
    font-size: 20px;
}

/* 评论区 */
.review-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.review-card {
    background: #fff;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    border-left: 4px solid var(--primary-color);
}

.review-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 15px;
}

.reviewer-name {
    font-weight: bold;
}

.review-stars {
    color: #FFD700;
}

.review-content {
    font-style: italic;
    color: var(--text-light);
    margin-bottom: 15px;
}

.review-date {
    font-size: 12px;
    color: var(--text-gray);
    text-align: right;
}

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

.faq-item {
    background: #fff;
    margin-bottom: 15px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.faq-question {
    padding: 20px;
    margin: 0;
    font-size: 18px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-icon {
    color: var(--primary-color);
    font-weight: bold;
}

.faq-answer {
    padding: 0 20px 20px;
    color: var(--text-light);
    border-top: 1px solid var(--border-color);
    margin-top: 10px;
    padding-top: 20px;
}

/* 底部 */
.site-footer {
    background-color: var(--dark-bg);
    color: var(--text-gray);
    padding-top: 60px;
}

.footer-inner {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    margin-bottom: 15px;
}

.brand-col h3 {
    color: var(--text-white);
    margin-bottom: 15px;
}

.footer-col h4 {
    color: var(--text-white);
    margin-bottom: 20px;
    font-size: 18px;
}

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

.links-col a {
    color: var(--text-gray);
}

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

.contact-col p {
    margin-bottom: 10px;
}

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

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

.qr-item img {
    width: 100px;
    height: 100px;
    border-radius: 8px;
    margin-bottom: 10px;
}

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

.social-share {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
}

.share-btn {
    background: var(--dark-lighter);
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 12px;
    cursor: pointer;
    transition: var(--transition);
}

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

.footer-bottom {
    background-color: #050810;
    padding: 20px 0;
    text-align: center;
    font-size: 14px;
}

.update-time {
    margin: 10px 0;
    color: var(--primary-color);
}

.legal-links {
    margin-top: 10px;
}

.legal-links a {
    color: var(--text-gray);
    margin: 0 10px;
}

/* 内页公共样式 */
.page-header {
    height: 300px;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    position: relative;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(10,14,26,0.7);
}

.page-header .container {
    position: relative;
    z-index: 1;
}

.page-header h1 {
    font-size: 40px;
    margin-bottom: 10px;
}

.prose-content h2 {
    margin: 30px 0 15px;
    color: var(--dark-bg);
    border-bottom: 2px solid var(--primary-color);
    display: inline-block;
    padding-bottom: 5px;
}

.prose-content p {
    margin-bottom: 15px;
    font-size: 16px;
}

/* 社区页面样式 */
.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -15px;
}

.col-md-8 {
    width: 66.66%;
    padding: 0 15px;
}

.col-md-4 {
    width: 33.33%;
    padding: 0 15px;
}

.community-post {
    background: #fff;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

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

.post-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    margin-right: 15px;
    object-fit: cover;
}

.post-header h4 {
    margin: 0;
    font-size: 16px;
}

.post-time {
    font-size: 12px;
    color: var(--text-gray);
}

.post-content p {
    margin-bottom: 15px;
}

.post-img {
    width: 100%;
    border-radius: 8px;
    margin-bottom: 15px;
}

.post-actions {
    display: flex;
    gap: 20px;
    border-top: 1px solid var(--border-color);
    padding-top: 15px;
    color: var(--text-light);
    font-size: 14px;
}

.post-actions span {
    cursor: pointer;
}

.post-actions span:hover {
    color: var(--primary-color);
}

.sidebar-widget {
    background: #fff;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.sidebar-widget h3 {
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
}

.topic-list li {
    margin-bottom: 10px;
    color: var(--primary-color);
    cursor: pointer;
}

.video-filter {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.video-filter span {
    padding: 8px 20px;
    background: #fff;
    border-radius: 20px;
    cursor: pointer;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    transition: var(--transition);
}

.video-filter span.active, .video-filter span:hover {
    background: var(--primary-color);
    color: white;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .footer-inner {
        grid-template-columns: 1fr 1fr;
    }
    .col-md-8, .col-md-4 {
        width: 100%;
    }
    .ai-content-wrap {
        flex-direction: column;
    }
}

@media (max-width: 768px) {
    .main-nav, .header-search {
        display: none;
    }
    .mobile-menu-btn {
        display: flex;
    }
    .hero-content h1 {
        font-size: 32px;
    }
    .hero-stats {
        flex-direction: column;
        gap: 15px;
    }
    .footer-inner {
        grid-template-columns: 1fr;
    }
    .qr-col {
        justify-content: flex-start;
    }
}