/* ============================================
   GMG官网 - 现代化简洁风格
   适合百度SEO优化的静态网站模板
   ============================================ */

/* CSS变量定义 */
:root {
    --primary-color: #0f172a;
    --secondary-color: #1e293b;
    --accent-color: #3b82f6;
    --accent-hover: #2563eb;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    --bg-primary: #f8fafc;
    --bg-white: #ffffff;
    --bg-dark: #020617;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    --transition: all 0.3s ease;
}

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

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

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

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

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

ul {
    list-style: none;
}

/* 容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ============================================
   导航栏
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
}

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

.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    padding: 8px 16px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: var(--radius-full);
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--primary-color);
    background-color: var(--bg-primary);
}

.nav-link-primary {
    background-color: var(--primary-color);
    color: var(--bg-white) !important;
}

.nav-link-primary:hover {
    background-color: var(--secondary-color);
}

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

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--primary-color);
    transition: var(--transition);
}

/* ============================================
   Hero区域
   ============================================ */
.hero {
    position: relative;
    padding: 160px 0 100px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(59, 130, 246, 0.15), transparent),
        radial-gradient(ellipse 60% 40% at 80% 80%, rgba(59, 130, 246, 0.1), transparent);
    z-index: -1;
}

.hero-content {
    text-align: left;
    max-width: none;
    margin: 0;
}

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

.hero-image {
    position: relative;
}

.hero-img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
}

.hero-title {
    font-size: 56px;
    font-weight: 700;
    line-height: 1.15;
    color: var(--primary-color);
    margin-bottom: 24px;
    letter-spacing: -1.5px;
}

.hero-desc {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: flex-start;
    margin-bottom: 80px;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--bg-white);
    box-shadow: var(--shadow-md);
}

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

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

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

.btn-white {
    background-color: var(--bg-white);
    color: var(--primary-color);
}

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

.btn-outline-white {
    background-color: transparent;
    color: var(--bg-white);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-outline-white:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: var(--bg-white);
}

/* 统计数据 */
.hero-stats {
    display: flex;
    justify-content: flex-start;
    gap: 60px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 48px;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
}

.stat-suffix {
    font-size: 32px;
    font-weight: 600;
    color: var(--accent-color);
}

.stat-label {
    font-size: 15px;
    color: var(--text-secondary);
    margin-top: 8px;
}

/* ============================================
   通用区块样式
   ============================================ */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    font-size: 14px;
    font-weight: 600;
    color: var(--accent-color);
    background-color: rgba(59, 130, 246, 0.1);
    border-radius: var(--radius-full);
    margin-bottom: 16px;
}

.section-title {
    font-size: 40px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.section-desc {
    font-size: 18px;
    color: var(--text-secondary);
}

/* ============================================
   服务区域
   ============================================ */
.services {
    background-color: var(--bg-white);
}

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

.service-card {
    padding: 0;
    background-color: var(--bg-primary);
    border-radius: var(--radius-xl);
    transition: var(--transition);
    border: 1px solid transparent;
    overflow: hidden;
}

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

.service-card-image {
    width: 100%;
    aspect-ratio: 4/3;
    overflow: hidden;
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
}

.service-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

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

.service-card-body {
    padding: 24px;
}

.service-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--accent-color);
    border-radius: var(--radius-md);
    margin-bottom: 20px;
}

.service-icon svg {
    width: 28px;
    height: 28px;
    color: var(--bg-white);
}

.service-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 12px;
}

.service-desc {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
}

.service-link {
    font-size: 15px;
    font-weight: 600;
    color: var(--accent-color);
}

.service-link:hover {
    color: var(--accent-hover);
}

/* ============================================
   关于我们
   ============================================ */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-content .section-tag {
    margin-bottom: 16px;
}

.about-content .section-title {
    text-align: left;
    margin-bottom: 24px;
}

.about-text {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 16px;
}

.about-features {
    margin: 32px 0;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    font-size: 16px;
    color: var(--text-primary);
}

.feature-check {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(34, 197, 94, 0.1);
    color: #22c55e;
    border-radius: 50%;
    font-size: 14px;
    font-weight: 700;
}

.about-image-wrapper {
    position: relative;
}

.about-img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
}

/* ============================================
   案例展示
   ============================================ */
.cases {
    background-color: var(--bg-white);
}

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

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

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

.case-image {
    aspect-ratio: 16/10;
    overflow: hidden;
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.case-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

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

.case-content {
    padding: 24px;
}

.case-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 12px;
}

.case-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
}

.case-link {
    font-size: 14px;
    font-weight: 600;
    color: var(--accent-color);
}

.case-link:hover {
    color: var(--accent-hover);
}

/* ============================================
   客户评价
   ============================================ */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.testimonial-card {
    padding: 32px;
    background-color: var(--bg-white);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

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

.testimonial-rating {
    color: #fbbf24;
    font-size: 18px;
    margin-bottom: 16px;
    letter-spacing: 2px;
}

.testimonial-text {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 24px;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.author-avatar {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--accent-color) 0%, #8b5cf6 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-white);
    font-size: 18px;
    font-weight: 600;
}

.author-info h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--primary-color);
}

.author-info p {
    font-size: 13px;
    color: var(--text-light);
}

/* ============================================
   新闻资讯
   ============================================ */
.news {
    background-color: var(--bg-white);
}

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

.news-card {
    padding: 0;
    background-color: var(--bg-primary);
    border-radius: var(--radius-xl);
    transition: var(--transition);
    overflow: hidden;
}

.news-card:hover {
    box-shadow: var(--shadow-md);
}

.news-card-image {
    width: 100%;
    aspect-ratio: 16/10;
    overflow: hidden;
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
}

.news-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

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

.news-meta {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
    padding: 20px 24px 0;
}

.news-tag {
    font-size: 12px;
    font-weight: 600;
    color: var(--accent-color);
    background-color: rgba(59, 130, 246, 0.1);
    padding: 4px 10px;
    border-radius: var(--radius-full);
}

.news-date {
    font-size: 13px;
    color: var(--text-light);
}

.news-title {
    font-size: 18px;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 12px;
    padding: 0 24px;
}

.news-title a {
    color: var(--primary-color);
}

.news-title a:hover {
    color: var(--accent-color);
}

.news-excerpt {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
    padding: 0 24px;
}

.news-link {
    font-size: 14px;
    font-weight: 600;
    color: var(--accent-color);
    padding: 0 24px;
    padding-bottom: 24px;
    display: inline-block;
}

.news-link:hover {
    color: var(--accent-hover);
}

/* ============================================
   CTA区域
   ============================================ */
.cta {
    background-color: var(--primary-color);
    padding: 100px 0;
    text-align: center;
}

.cta-content {
    max-width: 600px;
    margin: 0 auto;
}

.cta-title {
    font-size: 40px;
    font-weight: 700;
    color: var(--bg-white);
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.cta-desc {
    font-size: 18px;
    color: var(--text-light);
    margin-bottom: 40px;
}

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

/* ============================================
   页脚
   ============================================ */
.footer {
    background-color: var(--bg-dark);
    color: var(--bg-white);
    padding: 80px 0 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 48px;
    margin-bottom: 60px;
}

.footer-logo {
    font-size: 28px;
    font-weight: 700;
    display: block;
    margin-bottom: 16px;
}

.footer-desc {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 24px;
}

.footer-social {
    display: flex;
    gap: 16px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.footer-social a:hover {
    background-color: var(--accent-color);
    transform: translateY(-2px);
}

.footer-social svg {
    width: 20px;
    height: 20px;
    fill: var(--bg-white);
}

.footer-links h4,
.footer-contact h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--bg-white);
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    font-size: 15px;
    color: var(--text-light);
}

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

.footer-contact p {
    font-size: 15px;
    color: var(--text-light);
    margin-bottom: 8px;
}

.footer-bottom {
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    font-size: 14px;
    color: var(--text-light);
}

.footer-bottom a {
    color: var(--text-light);
    text-decoration: underline;
}

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

/* ============================================
   响应式设计
   ============================================ */
@media (max-width: 1024px) {
    .services-grid,
    .cases-grid,
    .testimonials-grid,
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-grid {
        gap: 40px;
    }
    
    .about-grid {
        gap: 48px;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background-color: var(--bg-white);
        flex-direction: column;
        padding: 24px;
        gap: 8px;
        border-bottom: 1px solid var(--border-color);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-link {
        width: 100%;
        text-align: center;
        padding: 12px;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero {
        padding: 120px 0 80px;
    }
    
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-content {
        text-align: center;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-image {
        max-width: 500px;
        margin: 0 auto;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-desc {
        font-size: 17px;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 32px;
    }
    
    section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .services-grid,
    .cases-grid,
    .testimonials-grid,
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .about-content .section-title {
        text-align: center;
    }
    
    .about-features {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    .about-content .btn {
        display: block;
        margin: 0 auto;
    }
    
    .cta-title {
        font-size: 28px;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    
    .footer-social {
        justify-content: center;
    }
    
    .logo-img {
        height: 32px;
    }
}

/* ============================================
   动画效果
   ============================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in {
    animation: fadeInUp 0.6s ease forwards;
}

/* 滚动显示动画 */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   内页通用样式
   ============================================ */

/* 页面Banner */
.page-banner {
    padding: 140px 0 60px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--bg-white);
}

.page-banner-title {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}

.page-banner-desc {
    font-size: 18px;
    color: var(--text-light);
    max-width: 600px;
}

/* 面包屑导航 */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 24px;
    font-size: 14px;
}

.breadcrumb a {
    color: rgba(255,255,255,0.7);
}

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

.breadcrumb-sep {
    color: rgba(255,255,255,0.4);
}

.breadcrumb-current {
    color: var(--bg-white);
}

/* 导航active状态 */
.nav-link.active {
    color: var(--accent-color);
    font-weight: 600;
}

/* ============================================
   关于我们内页 - 核心优势
   ============================================ */
.advantages {
    background-color: var(--bg-white);
}

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

.advantage-card {
    padding: 32px;
    background-color: var(--bg-primary);
    border-radius: var(--radius-xl);
    transition: var(--transition);
    border: 1px solid transparent;
}

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

.advantage-number {
    font-size: 48px;
    font-weight: 700;
    color: rgba(59, 130, 246, 0.15);
    line-height: 1;
    margin-bottom: 16px;
}

.advantage-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 12px;
}

.advantage-desc {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ============================================
   关于我们内页 - 发展历程时间线
   ============================================ */
.timeline-section {
    background-color: var(--bg-primary);
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent-color), rgba(59,130,246,0.2));
}

.timeline-item {
    position: relative;
    margin-bottom: 40px;
    padding-left: 40px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -33px;
    top: 6px;
    width: 14px;
    height: 14px;
    background-color: var(--accent-color);
    border-radius: 50%;
    border: 3px solid var(--bg-primary);
    box-shadow: 0 0 0 3px rgba(59,130,246,0.2);
}

.timeline-year {
    font-size: 14px;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 8px;
    letter-spacing: 1px;
}

.timeline-content h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.timeline-content p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ============================================
   文章详情页
   ============================================ */
.article-section {
    padding: 60px 0 100px;
}

.article-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 48px;
    align-items: start;
}

.article-main {
    min-width: 0;
}

.article-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.article-date {
    font-size: 14px;
    color: var(--text-light);
}

.article-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1.3;
    margin-bottom: 28px;
    letter-spacing: -0.5px;
}

.article-cover {
    margin-bottom: 32px;
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.article-cover img {
    width: 100%;
    height: auto;
    display: block;
}

.article-body {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.9;
}

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

.article-body h3 {
    font-size: 22px;
    font-weight: 600;
    color: var(--primary-color);
    margin: 36px 0 16px;
}

.article-body ul {
    margin: 16px 0;
    padding-left: 24px;
    list-style: disc;
}

.article-body ul li {
    margin-bottom: 8px;
    line-height: 1.8;
}

.article-body strong {
    color: var(--primary-color);
}

.article-footer {
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
}

/* 侧边栏 */
.article-sidebar {
    position: sticky;
    top: 100px;
}

.sidebar-block {
    padding: 24px;
    background-color: var(--bg-primary);
    border-radius: var(--radius-xl);
    margin-bottom: 24px;
}

.sidebar-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-news-list {
    list-style: none;
}

.sidebar-news-list li {
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-news-list li:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.sidebar-news-list a {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

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

.sidebar-text {
    font-size: 14px;
    color: var(--text-secondary);
}

/* 新闻列表页 */
.news-list-section {
    padding: 60px 0 100px;
}

/* ============================================
   内页响应式
   ============================================ */
@media (max-width: 1024px) {
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .article-layout {
        grid-template-columns: 1fr;
    }
    
    .article-sidebar {
        position: static;
    }
}

@media (max-width: 768px) {
    .page-banner {
        padding: 110px 0 40px;
    }
    
    .page-banner-title {
        font-size: 28px;
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
    }
    
    .article-title {
        font-size: 24px;
    }
    
    .timeline {
        padding-left: 30px;
    }
    
    .timeline-item {
        padding-left: 30px;
    }
    
    .timeline-item::before {
        left: -23px;
    }
}