/* 
 * 秘密入口 - 主样式表
 * 移动端优先响应式设计
 * 2026年SEO优化版本
 */

/* CSS变量定义 */
:root {
    --primary-color: #e63946;
    --secondary-color: #1d3557;
    --accent-color: #f4a261;
    --bg-dark: #0d1117;
    --bg-card: #161b22;
    --bg-hover: #21262d;
    --text-primary: #f0f6fc;
    --text-secondary: #8b949e;
    --border-color: #30363d;
    --success-color: #238636;
    --warning-color: #d29922;
    --font-main: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.5);
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --border-radius: 8px;
    --max-width: 1200px;
}

/* 重置样式 */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.7;
    min-height: 100vh;
    overflow-x: hidden;
}

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

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

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

ul, ol {
    list-style: none;
}

/* 容器 */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 16px;
}

/* 头部导航 - 非sticky */
.site-header {
    background: linear-gradient(180deg, var(--bg-dark) 0%, rgba(13,17,23,0.95) 100%);
    border-bottom: 1px solid var(--border-color);
    padding: 12px 0;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

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

.site-logo img {
    height: 40px;
    width: auto;
}

.site-logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent-color);
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    background: transparent;
    border: none;
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition-fast);
}

/* 主导航 */
.main-nav {
    width: 100%;
    display: none;
}

.main-nav.active {
    display: block;
}

.nav-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.nav-list li {
    border-bottom: 1px solid var(--border-color);
}

.nav-list a {
    display: block;
    padding: 12px 0;
    color: var(--text-primary);
    font-weight: 500;
    transition: var(--transition-fast);
}

.nav-list a:hover,
.nav-list a.active {
    color: var(--primary-color);
}

/* CTA按钮 */
.btn-cta {
    display: inline-block;
    padding: 10px 24px;
    background: linear-gradient(135deg, var(--primary-color) 0%, #c1121f 100%);
    color: #fff;
    font-weight: 600;
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.btn-cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    color: #fff;
}

/* Hero区域 */
.hero-section {
    position: relative;
    padding: 40px 0;
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--secondary-color) 100%);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.3;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
}

.hero-title {
    font-size: 1.75rem;
    font-weight: 800;
    margin-bottom: 16px;
    line-height: 1.3;
}

.hero-subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* 面包屑导航 */
.breadcrumb {
    padding: 12px 0;
    font-size: 0.875rem;
}

.breadcrumb-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
}

.breadcrumb-list li::after {
    content: '>';
    margin-left: 8px;
    color: var(--text-secondary);
}

.breadcrumb-list li:last-child::after {
    display: none;
}

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

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

/* 内容区块 */
.section {
    padding: 40px 0;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 24px;
    position: relative;
    padding-left: 16px;
}

.section-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 24px;
    background: var(--primary-color);
    border-radius: 2px;
}

/* 卡片网格 */
.card-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.card {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.card-image {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

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

.card-badge {
    position: absolute;
    top: 8px;
    right: 8px;
    padding: 4px 8px;
    background: var(--primary-color);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 4px;
}

.card-body {
    padding: 12px;
}

.card-title {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-meta {
    display: flex;
    gap: 12px;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* 评分星级 */
.rating {
    display: flex;
    align-items: center;
    gap: 4px;
}

.rating-stars {
    color: var(--warning-color);
    letter-spacing: 2px;
}

.rating-value {
    font-weight: 600;
    color: var(--accent-color);
}

/* 视频播放器 */
.video-player {
    position: relative;
    aspect-ratio: 16/9;
    background: #000;
    border-radius: var(--border-radius);
    overflow: hidden;
}

.video-player video {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.video-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-dark) 100%);
}

.play-btn {
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-normal);
}

.play-btn:hover {
    transform: scale(1.1);
    background: #c1121f;
}

.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;
}

/* 作者信息 - E-E-A-T */
.author-box {
    display: flex;
    gap: 16px;
    padding: 20px;
    background: var(--bg-card);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    margin: 24px 0;
}

.author-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;
}

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

.author-info h4 {
    font-size: 1rem;
    margin-bottom: 4px;
}

.author-info p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* 用户评论 */
.review-card {
    padding: 20px;
    background: var(--bg-card);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    margin-bottom: 16px;
}

.review-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 12px;
    flex-wrap: wrap;
    gap: 8px;
}

.reviewer-name {
    font-weight: 600;
}

.reviewer-location {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.review-date {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.review-content {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* FAQ手风琴 */
.faq-item {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    margin-bottom: 12px;
    overflow: hidden;
}

.faq-question {
    padding: 16px;
    background: var(--bg-card);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
}

.faq-question::after {
    content: '+';
    font-size: 1.25rem;
    color: var(--primary-color);
    transition: var(--transition-fast);
}

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

.faq-answer {
    padding: 0 16px;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal), padding var(--transition-normal);
}

.faq-item.active .faq-answer {
    padding: 16px;
    max-height: 500px;
}

/* 支付方式 */
.payment-methods {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
}

.payment-icon {
    height: 32px;
    width: auto;
    border-radius: 4px;
}

/* 页脚 */
.site-footer {
    background: var(--bg-card);
    border-top: 1px solid var(--border-color);
    padding: 40px 0 20px;
    margin-top: 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
    margin-bottom: 32px;
}

.footer-section h4 {
    font-size: 1rem;
    margin-bottom: 16px;
    color: var(--accent-color);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

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

.footer-bottom {
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.age-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--primary-color);
    border-radius: var(--border-radius);
    font-weight: 700;
}

.age-badge img {
    height: 24px;
    width: auto;
}

/* 社交媒体 */
.social-links {
    display: flex;
    gap: 12px;
    margin-top: 16px;
}

.social-link {
    width: 36px;
    height: 36px;
    background: var(--bg-hover);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.social-link:hover {
    background: var(--primary-color);
    color: #fff;
}

/* 内容文章 */
.article-content {
    line-height: 1.9;
}

.article-content h2 {
    font-size: 1.375rem;
    margin: 32px 0 16px;
    color: var(--accent-color);
}

.article-content h3 {
    font-size: 1.125rem;
    margin: 24px 0 12px;
}

.article-content p {
    margin-bottom: 16px;
    color: var(--text-secondary);
}

.article-content ul,
.article-content ol {
    margin: 16px 0;
    padding-left: 24px;
}

.article-content li {
    margin-bottom: 8px;
    color: var(--text-secondary);
    list-style: disc;
}

.article-content ol li {
    list-style: decimal;
}

/* 信息框 */
.info-box {
    padding: 20px;
    background: var(--bg-card);
    border-left: 4px solid var(--primary-color);
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    margin: 24px 0;
}

.info-box.warning {
    border-left-color: var(--warning-color);
}

.info-box.success {
    border-left-color: var(--success-color);
}

/* 表格 */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    font-size: 0.875rem;
}

.data-table th,
.data-table td {
    padding: 12px;
    border: 1px solid var(--border-color);
    text-align: left;
}

.data-table th {
    background: var(--bg-card);
    font-weight: 600;
}

.data-table tr:hover {
    background: var(--bg-hover);
}

/* APP下载页面 */
.app-download-section {
    text-align: center;
    padding: 60px 0;
}

.app-preview {
    max-width: 300px;
    margin: 0 auto 32px;
}

.download-buttons {
    display: flex;
    flex-direction: column;
    gap: 16px;
    align-items: center;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    transition: var(--transition-normal);
}

.download-btn:hover {
    background: var(--bg-hover);
    border-color: var(--primary-color);
}

.download-btn img {
    height: 32px;
    width: auto;
}

/* 响应式 - 平板 */
@media (min-width: 768px) {
    .mobile-menu-btn {
        display: none;
    }
    
    .main-nav {
        display: block;
        width: auto;
    }
    
    .nav-list {
        flex-direction: row;
        gap: 24px;
    }
    
    .nav-list li {
        border-bottom: none;
    }
    
    .nav-list a {
        padding: 8px 0;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .card-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .download-buttons {
        flex-direction: row;
        justify-content: center;
    }
}

/* 响应式 - 桌面 */
@media (min-width: 1024px) {
    .hero-section {
        padding: 80px 0;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .card-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .author-box {
        padding: 24px;
    }
}

/* 打印样式 */
@media print {
    .site-header,
    .site-footer,
    .btn-cta {
        display: none;
    }
    
    body {
        background: #fff;
        color: #000;
    }
}

/* 无障碍 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* 暗色模式已为默认 */