/* ==================== 基础样式重置 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary-color: #64748b;
    --text-color: #1e293b;
    --text-gray: #64748b;
    --text-light: #94a3b8;
    --bg-color: #ffffff;
    --bg-gray: #f8fafc;
    --bg-dark: #0f172a;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

ul, ol {
    list-style: none;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ==================== 导航栏 ==================== */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid transparent;
    transition: all 0.3s ease;
    height: 70px;
    display: flex;
    align-items: center;
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
    border-bottom-color: var(--border-color);
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    gap: 40px;
}

.logo {
    margin-right: auto;
    flex-shrink: 0;
}

.logo a {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 22px;
    font-weight: 700;
    color: var(--text-color);
}

.logo-icon {
    font-size: 28px;
}

.logo-text {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 40px;
    flex-shrink: 0;
}

.nav-menu li a {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-gray);
    position: relative;
    padding: 8px 0;
}

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

.nav-menu li a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--primary-color);
    border-radius: 2px;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-color);
    border-radius: 2px;
    transition: all 0.3s ease;
}

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

.section-title {
    font-size: 36px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 16px;
    color: var(--text-color);
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-gray);
    text-align: center;
    margin-bottom: 60px;
}

/* ==================== 按钮样式 ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    outline: none;
    gap: 8px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

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

.btn-outline:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.btn-white {
    background: white;
    color: var(--primary-color);
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.1);
}

.btn-white:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.btn-large {
    padding: 16px 40px;
    font-size: 16px;
}

/* ==================== Hero 区域 ==================== */
.hero {
    background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 50%, #3b82f6 100%);
    color: white;
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 700px;
    text-align: center;
    margin: 0 auto;
}

.hero-title {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 20px;
    opacity: 0.9;
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ==================== 特色服务 ==================== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.feature-card {
    background: white;
    padding: 32px 24px;
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-color);
}

.feature-card p {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.7;
}

/* ==================== 文章卡片 ==================== */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.article-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.article-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.article-icon {
    font-size: 64px;
    text-align: center;
    padding: 40px 20px;
    background: linear-gradient(135deg, #eff6ff, #dbeafe);
}

.article-card .article-content {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.article-card .article-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 12px;
    line-height: 1.5;
}

.article-card .article-title a {
    color: var(--text-color);
}

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

.article-card .article-excerpt {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.7;
    margin-bottom: 16px;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-card .article-meta {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    color: var(--text-light);
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

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

.articles-header h2 {
    font-size: 32px;
    font-weight: 700;
}

.view-more-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-color);
    font-weight: 600;
    font-size: 15px;
}

.view-more-btn:hover {
    gap: 12px;
}

/* ==================== 数据统计 ==================== */
.stats-section {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: white;
    padding: 80px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    text-align: center;
}

.stat-number {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 8px;
    background: linear-gradient(135deg, #60a5fa, #3b82f6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 16px;
    opacity: 0.8;
}

/* ==================== CTA 区域 ==================== */
.cta-section {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    padding: 80px 0;
    text-align: center;
}

.cta-content h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 16px;
}

.cta-content p {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 32px;
}

/* ==================== 页脚 ==================== */
.footer {
    background: var(--bg-dark);
    color: white;
    padding: 60px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
    padding-bottom: 40px;
}

.footer-col h4 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 20px;
}

.footer-col p {
    font-size: 14px;
    line-height: 1.8;
    opacity: 0.7;
}

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul li a {
    font-size: 14px;
    opacity: 0.7;
}

.footer-col ul li a:hover {
    opacity: 1;
    color: var(--primary-light);
}


/* 友情链接 */
.friend-links {
    padding: 24px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: 24px;
}

.friend-links h4 {
    color: #fff;
    font-size: 16px;
    margin-bottom: 16px;
    font-weight: 600;
}

.friend-links-list {
    display: flex;
    flex-wrap: wrap;
    gap: 16px 24px;
}

.friend-links-list a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s ease;
}

.friend-links-list a:hover {
    color: var(--primary-light);
    opacity: 1;
}

.footer-bottom {
    padding: 24px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    font-size: 14px;
    opacity: 0.6;
}

/* ==================== 返回顶部 ==================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    border: none;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
    z-index: 999;
}

.back-to-top:hover {
    transform: translateY(-4px);
    background: var(--primary-dark);
}

/* ==================== 面包屑导航 ==================== */
.breadcrumb {
    background: var(--bg-gray);
    padding: 12px 0;
    border-bottom: 1px solid #e2e8f0;
}
.breadcrumb ol {
    list-style: none;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    margin: 0;
    padding: 0;
}
.breadcrumb li {
    display: flex;
    align-items: center;
    font-size: 14px;
    color: var(--text-gray);
}
.breadcrumb li::after {
    content: '/';
    margin-left: 8px;
    color: var(--text-light);
}
.breadcrumb li:last-child::after {
    display: none;
}
.breadcrumb li a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s;
}
.breadcrumb li a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}
.breadcrumb li[aria-current="page"] {
    color: var(--text-color);
    font-weight: 500;
}

/* ==================== 页面标题 ==================== */
.page-header {
    background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 50%, #3b82f6 100%);
    color: white;
    padding: 80px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.page-header h1 {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 12px;
    position: relative;
    z-index: 1;
}

.page-header p {
    font-size: 18px;
    opacity: 0.9;
    position: relative;
    z-index: 1;
}

/* ==================== 筛选栏 ==================== */
.filter-bar {
    background: white;
    padding: 24px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    margin-bottom: 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.category-tabs {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.tab {
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    background: var(--bg-gray);
    color: var(--text-gray);
    border: 1px solid transparent;
}

.tab:hover {
    background: #eff6ff;
    color: var(--primary-color);
}

.tab.active {
    background: var(--primary-color);
    color: white;
}

.search-box {
    display: flex;
    align-items: center;
    background: var(--bg-gray);
    border-radius: var(--radius-md);
    padding: 0 16px;
    min-width: 280px;
}

.search-box input {
    flex: 1;
    padding: 12px 0;
    border: none;
    background: transparent;
    font-size: 14px;
    outline: none;
    color: var(--text-color);
}

.search-box input::placeholder {
    color: var(--text-light);
}

.search-btn {
    background: none;
    border: none;
    font-size: 18px;
    cursor: pointer;
    padding: 8px;
}

/* ==================== 分页 ==================== */
.pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 60px;
}

.page-btn {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    background: white;
    border: 1px solid var(--border-color);
    color: var(--text-gray);
}

.page-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.page-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* ==================== 加载和空状态 ==================== */
.loading {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-gray);
    font-size: 16px;
}

.empty {
    text-align: center;
    padding: 80px 20px;
    color: var(--text-light);
}

.empty::before {
    content: '📭';
    display: block;
    font-size: 64px;
    margin-bottom: 16px;
}

/* ==================== 文章详情 ==================== */
.article-detail {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    padding: 60px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.article-header {
    text-align: center;
    margin-bottom: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--border-color);
}

.article-category-badge {
    display: inline-block;
    padding: 6px 16px;
    background: #eff6ff;
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 20px;
}

.article-title {
    font-size: 36px;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 20px;
    color: var(--text-color);
}

.article-meta {
    display: flex;
    justify-content: center;
    gap: 24px;
    font-size: 14px;
    color: var(--text-gray);
}

.article-content {
    font-size: 16px;
    line-height: 2;
    color: var(--text-color);
}

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

.article-content h2 {
    font-size: 24px;
    font-weight: 700;
    margin: 32px 0 16px;
    color: var(--text-color);
}

.article-content h3 {
    font-size: 20px;
    font-weight: 700;
    margin: 24px 0 12px;
    color: var(--text-color);
}

.article-content ul,
.article-content ol {
    margin-bottom: 20px;
    padding-left: 24px;
}

.article-content ul li,
.article-content ol li {
    margin-bottom: 8px;
    list-style: disc;
}

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

.article-content blockquote {
    border-left: 4px solid var(--primary-color);
    padding: 16px 24px;
    margin: 24px 0;
    background: var(--bg-gray);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    color: var(--text-gray);
    font-style: italic;
}

.article-content img {
    max-width: 100%;
    border-radius: var(--radius-md);
    margin: 24px 0;
}

.article-content code {
    background: var(--bg-gray);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 14px;
    font-family: 'Consolas', 'Monaco', monospace;
}

.article-content pre {
    background: var(--bg-dark);
    color: #e2e8f0;
    padding: 24px;
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin: 24px 0;
}

.article-content pre code {
    background: none;
    padding: 0;
    color: inherit;
}

.article-tags {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.tag {
    padding: 6px 14px;
    background: var(--bg-gray);
    color: var(--text-gray);
    border-radius: 20px;
    font-size: 13px;
}

/* ==================== 相关文章 ==================== */
.related-articles {
    max-width: 1000px;
    margin: 60px auto 0;
}

.related-articles h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 30px;
    text-align: center;
}

/* ==================== 关于我们 ==================== */
.about-content {
    max-width: 900px;
    margin: 0 auto 60px;
}

.about-text {
    font-size: 16px;
    line-height: 2;
    color: var(--text-gray);
}

.about-text h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 20px;
}

.about-text p {
    margin-bottom: 20px;
}

.mission-vision {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    max-width: 900px;
    margin: 0 auto 60px;
}

.mv-card {
    background: white;
    padding: 40px;
    border-radius: var(--radius-lg);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

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

.mv-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.mv-card h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-color);
}

.mv-card p {
    font-size: 15px;
    color: var(--text-gray);
    line-height: 1.8;
}

.advantages {
    margin-top: 60px;
}

/* ==================== 联系我们 ==================== */
.contact-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 60px;
}

.contact-card {
    background: white;
    padding: 40px 30px;
    border-radius: var(--radius-lg);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.contact-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.contact-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.contact-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-color);
}

.contact-card p {
    font-size: 16px;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 8px;
}

.contact-desc {
    font-size: 14px !important;
    color: var(--text-gray) !important;
    font-weight: 400 !important;
}

.work-time {
    background: linear-gradient(135deg, #eff6ff, #dbeafe);
    padding: 60px;
    border-radius: var(--radius-lg);
    text-align: center;
}

.work-time-content h2 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-color);
}

.work-time-content p {
    font-size: 18px;
    color: var(--text-gray);
    margin-bottom: 8px;
}

.work-time-content p:first-of-type {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
}

/* ==================== 响应式样式 ==================== */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }

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

    .contact-cards {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero-title {
        font-size: 38px;
    }

    .section-title {
        font-size: 30px;
    }

    .article-detail {
        padding: 40px;
    }

    .article-title {
        font-size: 28px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 20px;
        gap: 0;
        box-shadow: var(--shadow-md);
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-menu li {
        width: 100%;
    }

    .nav-menu li a {
        display: block;
        padding: 12px 0;
        border-bottom: 1px solid var(--border-color);
    }

    .nav-menu li:last-child a {
        border-bottom: none;
    }

    .nav-toggle {
        display: flex;
    }

    .hero {
        padding: 60px 0;
    }

    .hero-title {
        font-size: 30px;
    }

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

    .section {
        padding: 50px 0;
    }

    .section-title {
        font-size: 26px;
    }

    .section-subtitle {
        font-size: 16px;
        margin-bottom: 40px;
    }

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

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

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

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

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

    .articles-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }

    .articles-header h2 {
        font-size: 24px;
    }

    .filter-bar {
        flex-direction: column;
        align-items: stretch;
    }

    .search-box {
        min-width: auto;
    }

    .page-header {
        padding: 50px 0;
    }

    .page-header h1 {
        font-size: 30px;
    }

    .article-detail {
        padding: 30px 20px;
    }

    .article-title {
        font-size: 24px;
    }

    .article-meta {
        flex-direction: column;
        gap: 8px;
    }

    .mission-vision {
        grid-template-columns: 1fr;
    }

    .contact-cards {
        grid-template-columns: 1fr;
    }

    .work-time {
        padding: 40px 20px;
    }

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

    .back-to-top {
        width: 42px;
        height: 42px;
        bottom: 20px;
        right: 20px;
    }
}

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
    }

    .btn-large {
        width: 100%;
    }

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