/* ==========================================================================
   闪狐云机场 (FlashFox Cloud) - 现代浅色调设计系统与主样式表
   配色标准参考：Earthy Neutrals (暖米/柔桃/赤陶色)
   ========================================================================== */

:root {
    /* 色彩系统 (Earthy Neutrals Palette) */
    --bg-main: #fbf9f5;             /* 极浅暖白背景 */
    --bg-surface: #ffffff;          /* 纯白卡片背景 */
    --bg-subtle: #f5f0eb;           /* 浅暖米次级背景 */
    --bg-card-hover: #faf6f0;       /* 卡片悬停微背景 */
    
    --primary: #e67e58;             /* 主调赤桃色 */
    --primary-hover: #d76c46;       /* 主调悬停深桃色 */
    --primary-light: #fdf1ec;      /* 主调浅色底调 */
    --primary-border: #f7c9b9;     /* 主调柔边框 */
    
    --secondary-tan: #d4a373;       /* 辅助暖棕/卡其色 */
    --accent-gold: #e09f3e;        /* 高亮金色/星级 */
    --accent-green: #38b000;       /* 可用/低延迟绿色 */
    --accent-green-bg: #eafaf1;    /* 绿色徽章背景 */

    --text-main: #2b2523;          /* 深暖灰主文本 */
    --text-muted: #6e635f;         /* 次要文本 */
    --text-light: #9c908b;         /* 辅助微文本 */
    --border-color: #efe8e1;       /* 浅暖色边框 */
    --border-card: #f0e6dd;        /* 卡片常规边框 */

    --shadow-sm: 0 2px 8px rgba(160, 110, 80, 0.05);
    --shadow-md: 0 8px 24px rgba(160, 110, 80, 0.08);
    --shadow-lg: 0 16px 36px rgba(160, 110, 80, 0.12);
    --shadow-hover: 0 20px 40px rgba(230, 126, 88, 0.15);

    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-pill: 50px;

    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* 全局重置 & 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 1;
}

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

ul {
    list-style: none;
}

/* 导航栏 (Navbar - 对应图4风格) */
.navbar {
    position: sticky;
    top: 0;
    background: rgba(251, 249, 245, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition);
}

.navbar.scrolled {
    padding: 12px 0;
    box-shadow: var(--shadow-sm);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--text-main);
    letter-spacing: -0.5px;
}

.brand-logo-img {
    width: 40px;
    height: 40px;
    object-fit: contain;
    filter: drop-shadow(0 3px 6px rgba(217, 107, 72, 0.2));
    transition: var(--transition);
}

.nav-brand:hover .brand-logo-img {
    transform: scale(1.08) rotate(-3deg);
}

.brand-text {
    background: linear-gradient(135deg, var(--text-main) 60%, var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 28px;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-muted);
    position: relative;
    padding: 6px 0;
}

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

.nav-link.active::after, .nav-link:hover::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2.5px;
    background: var(--primary);
    border-radius: 2px;
}

/* 导航右侧搜索栏 */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.search-trigger {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-surface);
    border: 1px solid var(--border-card);
    padding: 8px 16px;
    border-radius: var(--radius-pill);
    font-size: 0.88rem;
    color: var(--text-light);
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.search-trigger:hover {
    border-color: var(--primary-border);
    color: var(--primary);
    box-shadow: 0 4px 12px rgba(230, 126, 88, 0.12);
}

.btn-nav-register {
    background: var(--primary);
    color: #fff;
    padding: 8px 20px;
    border-radius: var(--radius-pill);
    font-size: 0.9rem;
    font-weight: 600;
    box-shadow: 0 4px 14px rgba(230, 126, 88, 0.25);
}

.btn-nav-register:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 18px rgba(230, 126, 88, 0.35);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.nav-toggle span {
    width: 24px;
    height: 2.5px;
    background: var(--text-main);
    border-radius: 2px;
    transition: var(--transition);
}

/* 全局搜索 Modal */
.search-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(43, 37, 35, 0.45);
    backdrop-filter: blur(8px);
    z-index: 2000;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 100px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.search-modal.active {
    opacity: 1;
    visibility: visible;
}

.search-content {
    background: var(--bg-surface);
    width: 90%;
    max-width: 680px;
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-card);
    position: relative;
    transform: translateY(-20px);
    transition: var(--transition);
}

.search-modal.active .search-content {
    transform: translateY(0);
}

.search-header {
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 2px solid var(--primary-light);
    padding-bottom: 12px;
    margin-bottom: 20px;
}

.search-input {
    width: 100%;
    border: none;
    outline: none;
    font-size: 1.15rem;
    color: var(--text-main);
    background: transparent;
}

.search-close {
    font-size: 1.5rem;
    color: var(--text-light);
    cursor: pointer;
    transition: var(--transition);
}

.search-close:hover {
    color: var(--primary);
}

.hot-searches h4 {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 12px;
}

.hot-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
}

.hot-tag {
    background: var(--bg-subtle);
    color: var(--text-muted);
    padding: 6px 14px;
    border-radius: var(--radius-pill);
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition);
}

.hot-tag:hover {
    background: var(--primary-light);
    color: var(--primary);
    border-color: var(--primary-border);
}

.search-results-list {
    max-height: 280px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.search-result-item {
    padding: 12px;
    border-radius: var(--radius-sm);
    background: var(--bg-main);
    display: block;
    transition: var(--transition);
}

.search-result-item:hover {
    background: var(--primary-light);
}

.search-result-item h5 {
    color: var(--text-main);
    font-size: 0.95rem;
    margin-bottom: 4px;
}

.search-result-item p {
    color: var(--text-muted);
    font-size: 0.82rem;
}

/* Hero 板块 */
.hero {
    padding: 90px 0 60px;
    text-align: center;
    position: relative;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--primary-light);
    color: var(--primary);
    border: 1px solid var(--primary-border);
    padding: 6px 18px;
    border-radius: var(--radius-pill);
    font-size: 0.88rem;
    font-weight: 600;
    margin-bottom: 24px;
}

.hero-title {
    font-size: 2.8rem;
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: -1px;
    color: var(--text-main);
    margin-bottom: 20px;
}

.hero-title span {
    color: var(--primary);
    position: relative;
    display: inline-block;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-muted);
    max-width: 760px;
    margin: 0 auto 36px;
    font-weight: 400;
}

.hero-features {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin-bottom: 40px;
}

.feature-tag {
    background: var(--bg-surface);
    border: 1px solid var(--border-card);
    padding: 8px 18px;
    border-radius: var(--radius-pill);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-main);
    box-shadow: var(--shadow-sm);
}

.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: var(--radius-pill);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-hover));
    color: #ffffff;
    box-shadow: 0 8px 24px rgba(230, 126, 88, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(230, 126, 88, 0.4);
}

.btn-secondary {
    background: var(--bg-surface);
    color: var(--text-main);
    border: 1px solid var(--border-card);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    border-color: var(--primary-border);
    color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* 公共 Section 标题 */
.section-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 50px;
}

.section-header .section-tag {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
    display: block;
}

.section-title {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-main);
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}

.section-subtitle {
    font-size: 1rem;
    color: var(--text-muted);
}

/* 节点列表板块 (对应图3风格) */
.nodes-section {
    padding: 60px 0 80px;
}

.nodes-container {
    background: var(--bg-surface);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.nodes-table-wrapper {
    overflow-x: auto;
}

.nodes-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    min-width: 760px;
}

.nodes-table th {
    background: var(--bg-subtle);
    padding: 16px 24px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-color);
}

.nodes-table td {
    padding: 18px 24px;
    font-size: 0.92rem;
    color: var(--text-main);
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

.nodes-table tr:last-child td {
    border-bottom: none;
}

.nodes-table tr:hover td {
    background: var(--bg-card-hover);
}

.node-flag-title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
}

.node-flag {
    font-size: 1.3rem;
}

.node-status-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--accent-green-bg);
    color: var(--accent-green);
    padding: 4px 10px;
    border-radius: var(--radius-pill);
    font-size: 0.8rem;
    font-weight: 600;
}

.node-status-badge::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--accent-green);
    border-radius: 50%;
}

.node-proto-tag {
    font-weight: 500;
    color: var(--text-muted);
}

.node-ping {
    color: var(--accent-green);
    font-weight: 700;
    font-family: monospace;
}

.subscription-bar {
    padding: 24px;
    background: var(--bg-subtle);
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.sub-info p {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
}

.sub-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.btn-sub {
    padding: 8px 18px;
    border-radius: var(--radius-pill);
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid var(--primary-border);
    background: var(--primary-light);
    color: var(--primary);
}

.btn-sub:hover {
    background: var(--primary);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(230, 126, 88, 0.3);
}

/* 套餐购买板块 (对应图1风格) */
.pricing-section {
    padding: 80px 0;
    background: linear-gradient(180deg, var(--bg-main) 0%, var(--bg-subtle) 100%);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    align-items: stretch;
}

.pricing-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-lg);
    padding: 36px 30px;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    position: relative;
    transition: var(--transition);
}

.pricing-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-border);
}

.pricing-card.featured {
    border: 2px solid var(--primary-border);
    box-shadow: var(--shadow-md);
    background: #fffdfb;
}

.plan-top-badge {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--primary), var(--secondary-tan));
    color: #fff;
    font-size: 0.8rem;
    font-weight: 700;
    padding: 4px 16px;
    border-radius: var(--radius-pill);
    box-shadow: 0 4px 10px rgba(230, 126, 88, 0.3);
}

.plan-name {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-muted);
    text-align: center;
    margin-bottom: 16px;
}

.plan-price-box {
    text-align: center;
    margin-bottom: 24px;
}

.price-currency {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-main);
    vertical-align: super;
}

.price-num {
    font-size: 3.2rem;
    font-weight: 900;
    color: var(--text-main);
    line-height: 1;
    letter-spacing: -1.5px;
}

.price-period {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.btn-buy-plan {
    width: 100%;
    padding: 12px;
    border-radius: var(--radius-pill);
    font-size: 0.95rem;
    font-weight: 700;
    border: 1px solid var(--primary-border);
    background: #fff;
    color: var(--primary);
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    margin-bottom: 28px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.pricing-card.featured .btn-buy-plan {
    background: linear-gradient(135deg, var(--primary), var(--primary-hover));
    color: #fff;
    border: none;
    box-shadow: 0 6px 18px rgba(230, 126, 88, 0.3);
}

.btn-buy-plan:hover {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 6px 18px rgba(230, 126, 88, 0.3);
}

.plan-specs {
    list-style: none;
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.plan-specs li {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.4;
    padding-bottom: 8px;
    border-bottom: 1px dashed var(--border-color);
}

.plan-specs li:last-child {
    border-bottom: none;
}

/* 使用教程板块 */
.tutorials-section {
    padding: 80px 0;
}

.tutorials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.tutorial-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-md);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

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

.tutorial-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.78rem;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 10px;
}

.tutorial-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 10px;
    line-height: 1.35;
}

.tutorial-desc {
    font-size: 0.88rem;
    color: var(--text-muted);
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.tutorial-link {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.tutorial-link:hover {
    color: var(--primary-hover);
    gap: 8px;
}

/* 用户评价板块 (对应图4卡片风格与轮播) */
.reviews-section {
    padding: 80px 0;
    background: var(--bg-subtle);
}

.reviews-carousel-container {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
    overflow: hidden;
}

.reviews-track {
    display: flex;
    gap: 24px;
    transition: transform 0.5s ease-in-out;
}

.review-card {
    flex: 0 0 calc(33.333% - 16px);
    background: var(--bg-surface);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-md);
    padding: 28px 24px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.review-stars {
    color: var(--accent-gold);
    font-size: 1rem;
    margin-bottom: 14px;
}

.review-quote {
    font-size: 0.92rem;
    color: var(--text-main);
    line-height: 1.6;
    margin-bottom: 20px;
    font-style: italic;
}

.review-author {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--primary);
}

.carousel-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 24px;
}

.dot {
    width: 10px;
    height: 10px;
    background: var(--border-card);
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
}

.dot.active {
    background: var(--primary);
    width: 24px;
    border-radius: var(--radius-pill);
}

/* 常见问题板块 (对应截图 2 列 Q&A 风格) */
.faq-section {
    padding: 80px 0;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px 40px;
    max-width: 1100px;
    margin: 0 auto;
}

.faq-card {
    background: transparent;
    padding: 8px 0;
    transition: var(--transition);
}

.faq-card-question {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 10px;
    line-height: 1.45;
}

.faq-card-answer {
    font-size: 0.92rem;
    color: var(--text-muted);
    line-height: 1.75;
}

@media (max-width: 768px) {
    .faq-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
}

.faq-answer-inner {
    padding: 0 24px 20px;
    font-size: 0.92rem;
    color: var(--text-muted);
    line-height: 1.7;
    border-top: 1px dashed var(--border-color);
    padding-top: 14px;
}

/* 页脚 Footer */
.footer {
    background: #231f1e;
    color: #e5ded9;
    padding: 60px 0 30px;
    border-top: 1px solid #36302e;
}

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

.footer-brand {
    font-size: 1.3rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-desc {
    font-size: 0.88rem;
    color: #a89e99;
    line-height: 1.6;
}

.footer-col h4 {
    font-size: 1rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-links a {
    font-size: 0.88rem;
    color: #a89e99;
}

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

.footer-bottom {
    border-top: 1px solid #36302e;
    padding-top: 24px;
    text-align: center;
    font-size: 0.82rem;
    color: #7a706b;
}

.footer-bottom a {
    color: #a89e99;
}

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

/* 独立文章页专用 Style */
.article-container {
    max-width: 860px;
    margin: 40px auto 80px;
    background: var(--bg-surface);
    padding: 48px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-card);
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-light);
    margin-bottom: 24px;
}

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

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

.article-header h1 {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--text-main);
    line-height: 1.3;
    margin-bottom: 16px;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 0.85rem;
    color: var(--text-muted);
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 32px;
}

.article-body {
    font-size: 1.02rem;
    color: #3d3532;
    line-height: 1.8;
}

.article-body h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-main);
    margin: 36px 0 16px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--primary-light);
}

.article-body h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-main);
    margin: 24px 0 12px;
}

.article-body p {
    margin-bottom: 18px;
}

.article-body ul, .article-body ol {
    margin: 0 0 20px 24px;
}

.article-body li {
    margin-bottom: 8px;
}

.article-cta-box {
    background: linear-gradient(135deg, var(--primary-light), #fff8f5);
    border: 1.5px solid var(--primary-border);
    border-radius: var(--radius-md);
    padding: 28px;
    margin: 40px 0;
    text-align: center;
}

.article-cta-box h3 {
    color: var(--primary);
    margin-bottom: 10px;
    font-size: 1.3rem;
}

.article-cta-box p {
    color: var(--text-muted);
    margin-bottom: 20px;
    font-size: 0.95rem;
}

/* 响应式适配 */
@media (max-width: 992px) {
    .pricing-grid, .tutorials-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .review-card {
        flex: 0 0 calc(50% - 12px);
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 30px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--bg-surface);
        flex-direction: column;
        padding: 40px;
        transition: var(--transition);
        box-shadow: var(--shadow-lg);
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-title {
        font-size: 2rem;
    }

    .pricing-grid, .tutorials-grid {
        grid-template-columns: 1fr;
    }

    .review-card {
        flex: 0 0 100%;
    }

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

    .article-container {
        padding: 24px;
    }
}