/* ============================================
   福布斯中国 - 响应式样式表
   Mobile-First 设计理念
   ============================================ */

/* ===== 大屏适配 (1200px+) ===== */
@media (max-width: 1280px) {
    :root {
        --container-max: 1100px;
    }

    .hero h1 {
        font-size: 44px;
    }

    .editor-grid {
        grid-template-columns: 1.2fr 1fr 1fr;
    }
}

/* ===== 平板横屏 (992px - 1199px) ===== */
@media (max-width: 1199px) {
    :root {
        --container-max: 960px;
    }

    /* Hero */
    .hero {
        padding: 60px 0 80px;
    }

    .hero .container {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero h1 {
        font-size: 40px;
    }

    .hero-sidebar {
        max-width: 500px;
    }

    /* 数据统计 */
    .stats-bar .container {
        grid-template-columns: repeat(5, 1fr);
        gap: 10px;
    }

    .stat-number {
        font-size: 32px;
    }

    .stat-label {
        font-size: 12px;
    }

    /* 主编精选 */
    .editor-grid {
        grid-template-columns: 1fr 1fr;
        grid-template-rows: auto;
    }

    .editor-card.featured {
        grid-row: span 1;
        grid-column: span 2;
    }

    .editor-card.featured .card-image {
        height: 300px;
    }

    /* 内容布局 */
    .content-layout {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    /* 科技/投资/创业 */
    .tech-grid,
    .invest-grid,
    .startup-grid {
        grid-template-columns: 1fr 1fr;
    }

    /* 排行榜 */
    .ranking-cards {
        grid-template-columns: repeat(2, 1fr);
    }

    /* 视频 */
    .video-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* 专家观点 */
    .opinion-grid {
        grid-template-columns: 1fr;
    }

    /* 合作伙伴 */
    .partners-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    /* 页脚 */
    .footer-top {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-links {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* ===== 平板竖屏 (768px - 991px) ===== */
@media (max-width: 991px) {
    :root {
        --header-height: 60px;
    }

    .container {
        padding: 0 16px;
    }

    /* 顶部通知栏 */
    .top-bar {
        font-size: 12px;
    }

    .top-bar span {
        display: none;
    }

    /* 导航 */
    .main-nav {
        display: none;
    }

    .header-actions .btn-subscribe {
        padding: 8px 16px;
        font-size: 13px;
    }

    /* Hero */
    .hero {
        padding: 40px 0 60px;
    }

    .hero h1 {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .hero-actions {
        flex-direction: column;
        gap: 12px;
    }

    .btn-primary,
    .btn-outline {
        text-align: center;
        justify-content: center;
    }

    .hero-meta {
        flex-wrap: wrap;
        gap: 12px;
    }

    /* 数据统计 */
    .stats-bar {
        padding: 30px 0;
    }

    .stats-bar .container {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }

    .stat-item:nth-child(4),
    .stat-item:nth-child(5) {
        grid-column: span 1;
    }

    /* 主编精选 */
    .editor-grid {
        grid-template-columns: 1fr;
    }

    .editor-card.featured {
        grid-column: span 1;
    }

    .editor-card.featured .card-image {
        height: 220px;
    }

    .editor-card:not(.featured) .card-image {
        height: 180px;
    }

    /* 文章列表 */
    .article-item a {
        flex-direction: column;
        gap: 12px;
    }

    .article-item img {
        width: 100%;
        height: 180px;
    }

    /* 科技/投资/创业 */
    .tech-grid,
    .invest-grid,
    .startup-grid {
        grid-template-columns: 1fr;
    }

    /* 排行榜 */
    .ranking-cards {
        grid-template-columns: 1fr 1fr;
    }

    /* 视频 */
    .video-grid {
        grid-template-columns: 1fr;
    }

    /* 合作伙伴 */
    .partners-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    /* 订阅区 */
    .newsletter-form {
        flex-direction: column;
    }

    .newsletter-options {
        gap: 12px;
    }

    /* 页脚 */
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

    .footer-bottom p {
        font-size: 12px;
    }
}

/* ===== 手机 (480px - 767px) ===== */
@media (max-width: 767px) {
    :root {
        --header-height: 56px;
    }

    /* 容器 */
    .container {
        padding: 0 14px;
    }

    /* 顶部通知栏 */
    .top-bar {
        height: auto;
        padding: 6px 0;
        font-size: 11px;
    }

    .top-bar .container {
        flex-direction: column;
        gap: 4px;
    }

    .top-bar-links {
        gap: 12px;
    }

    /* Logo */
    .logo-text {
        font-size: 22px;
    }

    .logo-cn {
        font-size: 9px;
        letter-spacing: 2px;
    }

    /* 搜索按钮隐藏文字 */
    .header-actions .btn-subscribe {
        display: none;
    }

    /* Hero */
    .hero {
        padding: 30px 0 50px;
    }

    .hero h1 {
        font-size: 26px;
        line-height: 1.3;
    }

    .hero-subtitle {
        font-size: 14px;
        line-height: 1.6;
    }

    .hero-badge {
        font-size: 11px;
        padding: 4px 12px;
    }

    .hero-sidebar {
        padding: 20px;
    }

    .hero-sidebar h3 {
        font-size: 14px;
    }

    .news-flash .time {
        font-size: 11px;
        min-width: 38px;
    }

    .news-flash a {
        font-size: 13px;
    }

    /* 数据统计 */
    .stats-bar .container {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .stat-number {
        font-size: 28px;
    }

    .stat-label {
        font-size: 11px;
    }

    /* 主内容 */
    .main-content {
        padding: 40px 0;
    }

    .section-header h2 {
        font-size: 20px;
    }

    .section-header {
        margin-bottom: 20px;
        padding-bottom: 12px;
    }

    /* 主编精选 */
    .editor-card .card-body {
        padding: 18px;
    }

    .editor-card.featured .card-body h3 {
        font-size: 19px;
    }

    .editor-card:not(.featured) .card-body h3 {
        font-size: 15px;
    }

    .card-body p {
        font-size: 13px;
    }

    /* 文章列表 */
    .article-info h3 {
        font-size: 16px;
    }

    .article-info p {
        font-size: 13px;
    }

    /* 科技 */
    .tech-card .card-image {
        height: 180px;
    }

    .tech-card h3 {
        font-size: 16px;
        padding: 16px 18px 6px;
    }

    .tech-card p {
        padding: 0 18px 16px;
        font-size: 13px;
    }

    /* 投资 */
    .invest-card {
        padding: 18px;
    }

    .invest-card h3 {
        font-size: 15px;
    }

    /* 创业 */
    .startup-card {
        padding: 20px;
        flex-direction: column;
        gap: 14px;
    }

    .startup-logo {
        width: 60px;
        height: 60px;
    }

    .startup-info h3 {
        font-size: 15px;
    }

    /* 侧边栏 */
    .sidebar-widget {
        padding: 20px;
    }

    .sidebar-widget h3 {
        font-size: 15px;
    }

    .ranking-nav a {
        padding: 10px 12px;
        font-size: 14px;
    }

    .hot-title {
        font-size: 13px;
    }

    /* 排行榜展示 */
    .rankings-showcase {
        padding: 50px 0;
    }

    .ranking-cards {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .ranking-card {
        padding: 30px 20px;
    }

    .ranking-icon {
        font-size: 36px;
    }

    /* 视频 */
    .video-section {
        padding: 50px 0;
    }

    .video-thumb {
        height: 180px;
    }

    .video-card h3 {
        font-size: 15px;
        padding: 16px 18px 4px;
    }

    /* 专家观点 */
    .opinion-section {
        padding: 50px 0;
    }

    .opinion-card {
        padding: 20px;
    }

    .opinion-content h3 {
        font-size: 15px;
    }

    /* 合作伙伴 */
    .partners-section {
        padding: 40px 0;
    }

    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .partner-logo {
        font-size: 13px;
        padding: 12px;
    }

    /* 订阅大区 */
    .newsletter-section {
        padding: 50px 0;
    }

    .newsletter-content h2 {
        font-size: 26px;
    }

    .newsletter-content p {
        font-size: 14px;
    }

    .newsletter-form input {
        padding: 14px 18px;
        font-size: 14px;
    }

    .newsletter-form button {
        padding: 14px 24px;
        font-size: 14px;
    }

    .newsletter-options {
        flex-direction: column;
        align-items: center;
        gap: 8px;
    }

    /* 页脚 */
    .footer {
        padding: 40px 0 20px;
    }

    .footer-logo {
        font-size: 26px;
    }

    .footer-links {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .footer-col h4 {
        font-size: 14px;
    }

    .footer-col a {
        font-size: 13px;
    }

    /* 回到顶部 */
    .back-to-top {
        width: 42px;
        height: 42px;
        bottom: 20px;
        right: 20px;
        font-size: 18px;
    }

    /* 搜索面板 */
    .search-panel form {
        flex-direction: column;
        padding: 0 14px;
    }

    .search-panel input {
        padding: 12px 16px;
        font-size: 14px;
    }

    .search-panel button {
        padding: 12px;
    }
}

/* ===== 小屏手机 (320px - 479px) ===== */
@media (max-width: 479px) {
    .hero h1 {
        font-size: 22px;
    }

    .hero-subtitle {
        font-size: 13px;
    }

    .stats-bar .container {
        grid-template-columns: repeat(2, 1fr);
    }

    .stat-number {
        font-size: 24px;
    }

    .footer-links {
        grid-template-columns: 1fr 1fr;
    }

    .newsletter-content h2 {
        font-size: 22px;
    }
}

/* ===== 横屏手机优化 ===== */
@media (max-height: 500px) and (orientation: landscape) {
    .hero {
        padding: 30px 0 40px;
    }

    .hero h1 {
        font-size: 28px;
    }

    .hero-sidebar {
        display: none;
    }
}

/* ===== 高DPI屏幕优化 ===== */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .logo-text {
        -webkit-font-smoothing: antialiased;
    }
}

/* ===== 减少动画偏好 ===== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ===== 暗色模式支持 ===== */
@media (prefers-color-scheme: dark) {
    /* 可选：未来支持暗色模式 */
}