@charset "utf-8";

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: #333;
    background-color: #f5f7fa;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

a:hover {
    color: #667eea;
}

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

ul, ol {
    list-style: none;
}

/* 通用容器 */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部导航 */
.site-header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.site-logo {
    display: flex;
    align-items: center;
    font-size: 22px;
    font-weight: 700;
    color: #667eea;
}

.site-logo-image {
    height: 40px;
    margin-right: 12px;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: #333;
    margin: 3px 0;
    transition: all 0.3s ease;
}

.site-nav {
    display: flex;
    gap: 32px;
}

.site-nav a {
    font-size: 16px;
    font-weight: 500;
    color: #555;
    position: relative;
}

.site-nav a:hover {
    color: #667eea;
}

.site-nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    transition: width 0.3s ease;
}

.site-nav a:hover::after {
    width: 100%;
}

/* Hero区域 */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 80px 0;
    color: #fff;
}

.hero-inner {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 60px;
    align-items: center;
}

.eyebrow {
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 3px;
    opacity: 0.9;
    margin-bottom: 16px;
}

.hero-copy h1 {
    font-size: 42px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
}

.hero-desc {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 32px;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 16px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border-radius: 30px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.btn-primary {
    background: #fff;
    color: #667eea;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.btn-ghost {
    background: transparent;
    border-color: #fff;
    color: #fff;
}

.btn-ghost:hover {
    background: #fff;
    color: #667eea;
}

/* Hero面板 */
.hero-panel {
    display: flex;
    justify-content: center;
}

.status-card {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 32px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.status-label {
    font-size: 14px;
    opacity: 0.8;
    margin-bottom: 12px;
}

.status-name {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 16px;
}

.status-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.status-list li {
    font-size: 14px;
    opacity: 0.9;
}

.status-list li a {
    color: #fff;
    text-decoration: underline;
}

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

.section-alt {
    background: #fff;
}

.section-heading {
    margin-bottom: 48px;
}

.section-heading h2 {
    font-size: 32px;
    font-weight: 700;
    color: #222;
    margin-bottom: 8px;
}

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

.section-heading-center {
    text-align: center;
}

/* 网格布局 */
.frame-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
}

.content-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
}

/* iframe容器 */
.frame-box {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    overflow: hidden;
}

.frame-box .section-heading {
    padding: 24px 24px 0;
    margin-bottom: 16px;
}

.iframe-shell {
    width: 100%;
    background: #000;
}

.iframe-shell iframe {
    width: 100%;
    height: 500px;
    border: none;
    display: block;
}

/* 侧边栏 */
.sidebar-box,
.content-side {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.side-panel {
    background: #fff;
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.side-panel .section-heading {
    margin-bottom: 20px;
}

.side-panel .section-heading h2 {
    font-size: 20px;
}

/* 新闻列表 */
.news-mini-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.news-mini-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 12px;
    border-radius: 8px;
    transition: background 0.3s ease;
}

.news-mini-item:hover {
    background: #f5f7fa;
}

.news-mini-item strong {
    font-size: 15px;
    color: #333;
    font-weight: 600;
    line-height: 1.4;
}

.news-mini-item span {
    font-size: 13px;
    color: #777;
    line-height: 1.5;
}

/* 推荐列表 */
.recommend-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.recommend-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 10px;
    border-radius: 8px;
    transition: background 0.3s ease;
}

.recommend-item:hover {
    background: #f5f7fa;
}

.recommend-item strong {
    font-size: 14px;
    color: #333;
    font-weight: 600;
}

.recommend-item span {
    font-size: 13px;
    color: #777;
}

/* 排行榜 */
.rank-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding-left: 24px;
}

.rank-list li {
    list-style: decimal;
}

.rank-list li a {
    font-size: 15px;
    color: #444;
    line-height: 1.5;
}

.rank-list li a:hover {
    color: #667eea;
}

/* 热门列表 */
.hot-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.hot-list li a {
    font-size: 15px;
    color: #444;
    line-height: 1.5;
}

.hot-list li a:hover {
    color: #667eea;
}

/* 特色卡片 */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 16px;
    padding: 32px;
    color: #fff;
    position: relative;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 32px rgba(102, 126, 234, 0.3);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
}

.feature-tag {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
}

.feature-card h3 a {
    color: #fff;
}

.feature-card h3 a:hover {
    text-decoration: underline;
}

.feature-card p {
    font-size: 15px;
    opacity: 0.9;
    line-height: 1.6;
}

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

.page-banner h1 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 12px;
}

.page-banner p {
    font-size: 16px;
    opacity: 0.9;
}

/* 新闻卡片 */
.content-main {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.news-card {
    background: #fff;
    border-radius: 16px;
    padding: 28px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.news-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
}

.news-date {
    display: inline-block;
    font-size: 13px;
    color: #667eea;
    font-weight: 500;
    margin-bottom: 12px;
}

.news-card-body h2 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 12px;
}

.news-card-body h2 a {
    color: #222;
}

.news-card-body h2 a:hover {
    color: #667eea;
}

.news-card-body p {
    font-size: 15px;
    color: #666;
    line-height: 1.7;
}

/* 文章详情 */
.article-detail {
    background: #fff;
    border-radius: 16px;
    padding: 40px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.article-header {
    border-bottom: 2px solid #f0f0f0;
    padding-bottom: 24px;
    margin-bottom: 32px;
}

.article-header h2 {
    font-size: 32px;
    font-weight: 700;
    color: #222;
    line-height: 1.3;
    margin-top: 12px;
}

.article-content {
    font-size: 16px;
    line-height: 1.8;
    color: #444;
}

.article-content p {
    margin-bottom: 20px;
}

.article-content img {
    max-width: 100%;
    border-radius: 8px;
    margin: 20px 0;
}

.article-content h1,
.article-content h2,
.article-content h3 {
    margin: 24px 0 12px;
    font-weight: 600;
    color: #222;
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    padding-top: 20px;
}

.pagination a,
.pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 12px;
    border-radius: 8px;
    font-size: 15px;
    background: #fff;
    color: #555;
    transition: all 0.3s ease;
}

.pagination a:hover {
    background: #667eea;
    color: #fff;
}

.pagination .thisclass,
.pagination span.current {
    background: #667eea;
    color: #fff;
}

/* 页脚 */
.site-footer {
    background: #2d3748;
    color: #cbd5e0;
    padding: 48px 0 32px;
    position: relative;
}

.footer-inner {
    text-align: center;
}

.footer-inner p {
    margin-bottom: 8px;
    font-size: 14px;
}

.footer-inner a {
    color: #a0aec0;
}

.footer-inner a:hover {
    color: #fff;
}

/* 返回顶部 */
.back-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    border: none;
    border-radius: 50%;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
    box-shadow: 0 4px 16px rgba(102, 126, 234, 0.4);
    z-index: 999;
}

.back-top.is-visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(102, 126, 234, 0.5);
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero-inner {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .frame-grid,
    .content-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
    
    .site-nav {
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 20px;
        gap: 16px;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
        display: none;
    }
    
    .site-nav.is-open {
        display: flex;
    }
    
    .hero-copy h1 {
        font-size: 32px;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
    
    .section {
        padding: 50px 0;
    }
    
    .article-detail {
        padding: 24px;
    }
}

/* 页面主容器 */
.page-main {
    min-height: 100vh;
}

/* 侧边栏面板增强 */
.side-panel {
    background: #fff;
    border-radius: 16px;
    padding: 28px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.side-panel:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.side-panel .section-heading {
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 2px solid #f0f0f0;
}

.side-panel .section-heading h2 {
    font-size: 20px;
    color: #222;
    font-weight: 600;
}

.side-panel .section-heading p {
    font-size: 13px;
    color: #999;
}

/* 推荐列表增强 */
.recommend-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.recommend-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 12px;
    border-radius: 10px;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.recommend-item:hover {
    background: #f8f9ff;
    border-color: #e0e5ff;
    transform: translateX(4px);
}

.recommend-item strong {
    font-size: 15px;
    color: #333;
    font-weight: 600;
    line-height: 1.4;
}

.recommend-item span {
    font-size: 13px;
    color: #777;
    line-height: 1.5;
}

/* 新闻列表增强 */
.news-mini-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 14px;
    border-radius: 10px;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.news-mini-item:hover {
    background: #f8f9ff;
    border-color: #e0e5ff;
    transform: translateX(4px);
}

/* 侧边栏容器 */
.sidebar-box {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* 新闻卡片增强 */
.news-card {
    background: #fff;
    border-radius: 16px;
    padding: 32px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.news-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
    border-color: #e0e5ff;
}

.news-date {
    display: inline-block;
    font-size: 13px;
    color: #667eea;
    font-weight: 600;
    margin-bottom: 16px;
    padding: 4px 12px;
    background: linear-gradient(135deg, #f0f3ff 0%, #e8ecff 100%);
    border-radius: 20px;
}

.news-card-body h2 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 12px;
}

.news-card-body h2 a {
    color: #222;
    transition: color 0.3s ease;
}

.news-card-body h2 a:hover {
    color: #667eea;
}

.news-card-body p {
    font-size: 15px;
    color: #666;
    line-height: 1.7;
}

/* 特色卡片增强 */
.feature-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 16px;
    padding: 36px;
    color: #fff;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(102, 126, 234, 0.4);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, transparent 70%);
}

.feature-tag {
    display: inline-block;
    background: rgba(255, 255, 255, 0.25);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 18px;
    backdrop-filter: blur(10px);
}

.feature-card h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 14px;
    position: relative;
}

.feature-card h3 a {
    color: #fff;
}

.feature-card h3 a:hover {
    text-decoration: underline;
}

.feature-card p {
    font-size: 15px;
    opacity: 0.95;
    line-height: 1.7;
    position: relative;
}

/* 头部增强 */
.site-header {
    background: #fff;
    box-shadow: 0 2px 16px rgba(0, 0, 0, 0.08);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.site-logo {
    display: flex;
    align-items: center;
    font-size: 22px;
    font-weight: 700;
    color: #667eea;
    transition: transform 0.3s ease;
}

.site-logo:hover {
    transform: scale(1.02);
}

.site-logo-image {
    height: 40px;
    margin-right: 12px;
}

.site-nav a {
    font-size: 16px;
    font-weight: 500;
    color: #555;
    position: relative;
    padding: 8px 0;
    transition: color 0.3s ease;
}

.site-nav a:hover {
    color: #667eea;
}

.site-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 3px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    transition: width 0.3s ease;
    border-radius: 2px;
}

.site-nav a:hover::after {
    width: 100%;
}

/* Hero 区域增强 */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 100px 0;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 50%, rgba(255,255,255,0.1) 0%, transparent 50%);
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(30px, -30px); }
}

.hero-inner {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.eyebrow {
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 4px;
    opacity: 0.9;
    margin-bottom: 16px;
    font-weight: 500;
}

.hero-copy h1 {
    font-size: 44px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 24px;
}

.hero-desc {
    font-size: 18px;
    opacity: 0.95;
    margin-bottom: 36px;
    line-height: 1.8;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px 36px;
    border-radius: 30px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.btn-primary {
    background: #fff;
    color: #667eea;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.btn-ghost {
    background: transparent;
    border-color: #fff;
    color: #fff;
}

.btn-ghost:hover {
    background: #fff;
    color: #667eea;
    transform: translateY(-3px);
}

/* Hero 面板增强 */
.status-card {
    background: rgba(255, 255, 255, 0.18);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 36px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.status-label {
    font-size: 14px;
    opacity: 0.9;
    margin-bottom: 12px;
    font-weight: 500;
    letter-spacing: 1px;
}

.status-name {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 20px;
}

.status-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.status-list li {
    font-size: 15px;
    opacity: 0.95;
}

.status-list li a {
    color: #fff;
    text-decoration: underline;
    text-underline-offset: 3px;
}

/* 页面 Banner 增强 */
.page-banner {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 80px 0;
    color: #fff;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 70% 30%, rgba(255,255,255,0.1) 0%, transparent 50%);
}

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

.page-banner h1 {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 16px;
}

.page-banner p {
    font-size: 17px;
    opacity: 0.95;
}

/* 页脚增强 */
.site-footer {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: #cbd5e0;
    padding: 60px 0 40px;
    position: relative;
}

.footer-inner {
    text-align: center;
}

.footer-inner p {
    margin-bottom: 12px;
    font-size: 15px;
    line-height: 1.6;
}

.footer-inner a {
    color: #a0aec0;
    transition: color 0.3s ease;
}

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

/* 返回顶部增强 */
.back-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    border: none;
    border-radius: 50%;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
    box-shadow: 0 4px 16px rgba(102, 126, 234, 0.4);
    z-index: 999;
}

.back-top.is-visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-top:hover {
    transform: translateY(-6px) scale(1.05);
    box-shadow: 0 8px 24px rgba(102, 126, 234, 0.5);
}

/* iframe 容器增强 */
.frame-box {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.frame-box:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.frame-box .section-heading {
    padding: 28px 28px 0;
    margin-bottom: 20px;
}

.frame-box .section-heading h2 {
    font-size: 24px;
    font-weight: 600;
    color: #222;
    margin-bottom: 8px;
}

.frame-box .section-heading p {
    font-size: 14px;
    color: #888;
}

.iframe-shell {
    width: 100%;
    background: #000;
}

.iframe-shell iframe {
    width: 100%;
    height: 500px;
    border: none;
    display: block;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero-inner {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .frame-grid,
    .content-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero {
        padding: 80px 0;
    }
    
    .hero-copy h1 {
        font-size: 36px;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
    
    .site-nav {
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 20px;
        gap: 16px;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
        display: none;
    }
    
    .site-nav.is-open {
        display: flex;
    }
    
    .hero-copy h1 {
        font-size: 32px;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
    
    .section {
        padding: 50px 0;
    }
    
    .article-detail {
        padding: 24px;
    }
    
    .page-banner {
        padding: 60px 0;
    }
    
    .page-banner h1 {
        font-size: 32px;
    }
    
    .news-card {
        padding: 24px;
    }
    
    .side-panel {
        padding: 24px;
    }
}

@media (max-width: 480px) {
    .hero-actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .iframe-shell iframe {
        height: 350px;
    }
    
    .hero-copy h1 {
        font-size: 28px;
    }
    
    .hero-desc {
        font-size: 16px;
    }
    
    .feature-card {
        padding: 28px;
    }
}