/* roulang page: index */
:root {
  --primary: #1E3A8A;
  --primary-light: #2563EB;
  --primary-dark: #1E40AF;
  --accent: #F59E0B;
  --accent-hover: #D97706;
  --bg: #F8FAFC;
  --surface: #FFFFFF;
  --text: #0F172A;
  --text-secondary: #475569;
  --border: #E2E8F0;
  --border-light: #F1F5F9;
  --radius-sm: 0.5rem;
  --radius: 0.75rem;
  --radius-lg: 1rem;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
  --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  --max-width: 1200px;
  --section-gap: 5rem;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* 按钮基础 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
  white-space: nowrap;
  text-decoration: none;
}

.btn-primary {
  background: var(--primary-light);
  color: #fff;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(30, 64, 175, 0.4);
}

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

.btn-accent {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 14px rgba(245, 158, 11, 0.3);
}
.btn-accent:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

/* Header/Nav 居中Logo + 两侧导航 */
.header {
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--border);
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.5px;
  white-space: nowrap;
  order: 0;
}

.nav-left, .nav-right {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-left a, .nav-right a {
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s;
  position: relative;
  padding: 0.5rem 0;
}
.nav-left a:hover, .nav-right a:hover,
.nav-left a.active, .nav-right a.active {
  color: var(--primary);
}
.nav-left a.active::after, .nav-right a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--primary-light);
  border-radius: 3px;
}

/* 移动端汉堡菜单按钮 */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.8rem;
  color: var(--text);
  cursor: pointer;
  order: 1;
}

/* Hero */
.hero {
  background: linear-gradient(135deg, rgba(30,58,138,0.85) 0%, rgba(37,99,235,0.7) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  color: #fff;
  padding: 6rem 0 5rem;
  text-align: center;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}
.hero p {
  font-size: 1.25rem;
  max-width: 700px;
  margin: 0 auto 2.5rem;
  opacity: 0.95;
}

.hero-buttons {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Section 通用 */
.section {
  padding: var(--section-gap) 0;
}
.section-header {
  text-align: center;
  margin-bottom: 3rem;
}
.section-header h2 {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.75rem;
}
.section-header p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

/* 服务特色网格 */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}
.feature-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  box-shadow: var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
  text-align: center;
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.feature-card img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  border-radius: var(--radius);
  margin-bottom: 1.5rem;
}
.feature-card h3 {
  font-size: 1.35rem;
  margin-bottom: 0.75rem;
  color: var(--primary-dark);
}
.feature-card p {
  color: var(--text-secondary);
}

/* 分类入口卡片 */
.category-entry {
  background: var(--surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  display: flex;
  max-width: 800px;
  margin: 0 auto;
  transition: transform 0.2s;
}
.category-entry:hover {
  transform: translateY(-4px);
}
.category-entry img {
  width: 40%;
  object-fit: cover;
}
.category-entry-content {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.category-entry-content h3 {
  font-size: 1.6rem;
  color: var(--primary);
  margin-bottom: 0.5rem;
}
.category-entry-content p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

/* 最新资讯列表 */
.news-list {
  display: grid;
  gap: 1.5rem;
}
.news-item {
  display: flex;
  gap: 1.5rem;
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s;
}
.news-item:hover {
  box-shadow: var(--shadow);
}
.news-item .news-img {
  width: 120px;
  height: 80px;
  border-radius: var(--radius-sm);
  background: var(--border-light);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 2rem;
}
.news-content {
  flex: 1;
}
.news-content h4 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
  color: var(--text);
}
.news-content h4 a {
  color: var(--text);
  transition: color 0.2s;
}
.news-content h4 a:hover {
  color: var(--primary-light);
}
.news-meta {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.news-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 数据卡片统计 */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  text-align: center;
}
.stat-card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 2rem 1rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s;
}
.stat-card:hover {
  transform: translateY(-4px);
}
.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--primary-light);
  margin-bottom: 0.25rem;
}
.stat-label {
  color: var(--text-secondary);
  font-weight: 500;
}

/* 流程步骤 */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
.step {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  text-align: center;
  position: relative;
  box-shadow: var(--shadow-sm);
}
.step-number {
  width: 48px;
  height: 48px;
  background: var(--primary-light);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.3rem;
  margin: 0 auto 1.5rem;
}
.step h3 {
  margin-bottom: 0.75rem;
  color: var(--primary-dark);
}

/* FAQ 折叠 */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}
.faq-item {
  background: var(--surface);
  border-radius: var(--radius);
  margin-bottom: 1rem;
  box-shadow: var(--shadow-sm);
}
.faq-question {
  padding: 1.5rem 2rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
  color: var(--primary-dark);
  transition: background 0.2s;
}
.faq-question:hover {
  background: var(--border-light);
}
.faq-question::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 300;
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
  padding: 0 2rem;
  color: var(--text-secondary);
}
.faq-item.open .faq-answer {
  max-height: 300px;
  padding-bottom: 1.5rem;
}
.faq-item.open .faq-question::after {
  content: '−';
}

/* CTA */
.cta {
  background: var(--primary-dark);
  color: #fff;
  text-align: center;
  padding: 4rem 0;
}
.cta h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
}
.cta p {
  max-width: 600px;
  margin: 0 auto 2rem;
  opacity: 0.9;
}
.cta-buttons {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Footer */
.footer {
  background: #0F172A;
  color: #CBD5E1;
  padding: 3rem 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 3rem;
}
.footer-col h4 {
  color: #fff;
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
}
.footer-links {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
}
.footer-links a {
  color: #94A3B8;
  transition: color 0.2s;
}
.footer-links a:hover {
  color: #fff;
}
.footer-copy {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid #334155;
  text-align: center;
  color: #64748B;
  font-size: 0.9rem;
}

/* 响应式 */
@media (max-width: 1024px) {
  .hero h1 { font-size: 2.4rem; }
  .stats { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-left, .nav-right {
    display: none;
  }
  .menu-toggle {
    display: block;
  }
  .header-inner {
    justify-content: space-between;
  }
  .logo {
    order: 2;
  }
  .menu-toggle {
    order: 1;
  }
  /* 移动菜单激活 */
  .nav-open .nav-left,
  .nav-open .nav-right {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background: var(--surface);
    box-shadow: var(--shadow);
    padding: 1rem 2rem;
  }
  .nav-open .nav-left {
    margin-bottom: 0;
  }
  .category-entry {
    flex-direction: column;
  }
  .category-entry img {
    width: 100%;
    height: 200px;
  }
  .steps {
    grid-template-columns: 1fr;
  }
  .stats {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 520px) {
  .hero h1 { font-size: 1.8rem; }
  .hero p { font-size: 1rem; }
  .news-item { flex-direction: column; }
  .news-item .news-img { width: 100%; height: 120px; }
  .footer-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr; }
}

/* roulang page: article */
:root {
            --primary: #1E40AF;
            --primary-light: #3B82F6;
            --primary-dark: #1E3A8A;
            --accent: #F59E0B;
            --accent-light: #FBBF24;
            --accent-dark: #D97706;
            --bg: #F1F5F9;
            --bg-white: #FFFFFF;
            --bg-dark: #0F172A;
            --bg-card: #FFFFFF;
            --text: #1E293B;
            --text-secondary: #475569;
            --text-muted: #94A3B8;
            --text-light: #CBD5E1;
            --border: #E2E8F0;
            --border-light: #F1F5F9;
            --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
            --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.05);
            --shadow-lg: 0 10px 25px rgba(0,0,0,0.1), 0 4px 10px rgba(0,0,0,0.06);
            --shadow-xl: 0 20px 40px rgba(0,0,0,0.12);
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --transition: 0.2s cubic-bezier(0.4,0,0.2,1);
            --transition-slow: 0.35s cubic-bezier(0.4,0,0.2,1);
            --max-width: 1280px;
            --max-width-article: 820px;
            --nav-height: 72px;
        }

        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }

        button, input, textarea {
            font-family: inherit;
            font-size: inherit;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .container-narrow {
            width: 100%;
            max-width: var(--max-width-article);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== HEADER & NAVIGATION ========== */
        .header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--nav-height);
            box-shadow: var(--shadow-sm);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
        }

        .nav-left, .nav-right {
            display: flex;
            align-items: center;
            gap: 0;
            flex: 1;
            min-width: 0;
        }

        .nav-left {
            justify-content: flex-end;
            padding-right: 20px;
        }

        .nav-right {
            justify-content: flex-start;
            padding-left: 20px;
        }

        .nav-logo {
            flex-shrink: 0;
            text-align: center;
            padding: 0 12px;
        }

        .nav-logo a {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
            transition: color var(--transition);
        }

        .nav-logo a:hover {
            color: var(--primary-light);
        }

        .nav-logo .logo-icon {
            display: inline-block;
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: var(--radius-sm);
            vertical-align: middle;
            margin-right: 8px;
            position: relative;
            top: -1px;
        }

        .nav-logo .logo-icon::after {
            content: '🎮';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            font-size: 18px;
        }

        .nav-left a, .nav-right a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
        }

        .nav-left a:hover, .nav-right a:hover {
            color: var(--primary);
            background: rgba(30,64,175,0.04);
        }

        .nav-left a.active, .nav-right a.active {
            color: var(--primary);
            font-weight: 600;
            background: rgba(30,64,175,0.07);
        }

        .nav-left a.active::after, .nav-right a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            padding: 9px 20px;
            background: var(--primary);
            color: #fff !important;
            border-radius: 25px;
            font-size: 14px;
            font-weight: 600;
            transition: all var(--transition);
            white-space: nowrap;
            margin-left: 8px;
        }

        .nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            z-index: 1001;
            flex-direction: column;
            gap: 5px;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
        }

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

        .nav-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            padding: 16px 24px;
            z-index: 999;
            box-shadow: var(--shadow-lg);
            flex-direction: column;
            gap: 4px;
        }

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

        .mobile-menu a {
            display: block;
            padding: 12px 16px;
            border-radius: var(--radius);
            font-size: 16px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
        }

        .mobile-menu a:hover {
            background: var(--border-light);
            color: var(--primary);
        }

        .mobile-menu a.active {
            background: rgba(30,64,175,0.07);
            color: var(--primary);
            font-weight: 600;
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-wrap {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            padding: 12px 0;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

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

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

        .breadcrumb .sep {
            color: var(--border);
            font-size: 12px;
        }

        .breadcrumb .current {
            color: var(--text);
            font-weight: 500;
        }

        /* ========== ARTICLE MAIN ========== */
        .article-main {
            flex: 1;
            padding: 40px 0 60px;
        }

        .article-container {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            align-items: start;
        }

        .article-content-area {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }

        .article-header {
            margin-bottom: 28px;
            border-bottom: 1px solid var(--border-light);
            padding-bottom: 24px;
        }

        .article-category-tag {
            display: inline-block;
            padding: 5px 14px;
            background: rgba(30,64,175,0.08);
            color: var(--primary);
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

        .article-title {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.35;
            color: var(--text);
            margin-bottom: 16px;
            letter-spacing: -0.3px;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            font-size: 14px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .article-meta .meta-icon {
            width: 16px;
            height: 16px;
            opacity: 0.7;
        }

        .article-featured-image {
            margin-bottom: 28px;
            border-radius: var(--radius);
            overflow: hidden;
        }

        .article-featured-image img {
            width: 100%;
            border-radius: var(--radius);
            aspect-ratio: 16/9;
            object-fit: cover;
        }

        .article-body {
            font-size: 16px;
            line-height: 1.85;
            color: var(--text);
        }

        .article-body h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text);
            margin: 36px 0 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border-light);
            letter-spacing: -0.2px;
        }

        .article-body h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--text);
            margin: 28px 0 12px;
        }

        .article-body p {
            margin-bottom: 16px;
        }

        .article-body ul, .article-body ol {
            margin: 12px 0 20px 24px;
        }

        .article-body li {
            margin-bottom: 8px;
            padding-left: 4px;
        }

        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: rgba(30,64,175,0.03);
            margin: 20px 0;
            padding: 16px 20px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }

        .article-body .tips-box {
            background: linear-gradient(135deg, rgba(59,130,246,0.06), rgba(30,64,175,0.04));
            border: 1px solid rgba(59,130,246,0.2);
            border-radius: var(--radius);
            padding: 18px 22px;
            margin: 20px 0;
            position: relative;
            padding-left: 50px;
        }

        .article-body .tips-box::before {
            content: '💡';
            position: absolute;
            left: 16px;
            top: 18px;
            font-size: 18px;
        }

        .article-body .warning-box {
            background: linear-gradient(135deg, rgba(245,158,11,0.08), rgba(217,119,6,0.05));
            border: 1px solid rgba(245,158,11,0.3);
            border-radius: var(--radius);
            padding: 18px 22px;
            margin: 20px 0;
            position: relative;
            padding-left: 50px;
        }

        .article-body .warning-box::before {
            content: '⚠️';
            position: absolute;
            left: 16px;
            top: 18px;
            font-size: 18px;
        }

        .article-body img {
            border-radius: var(--radius);
            margin: 20px 0;
            box-shadow: var(--shadow);
        }

        .article-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-body a:hover {
            color: var(--primary-light);
        }

        .article-tags {
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }

        .article-tags .tag-label {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 500;
        }

        .article-tags .tag {
            display: inline-block;
            padding: 5px 12px;
            background: var(--border-light);
            color: var(--text-secondary);
            border-radius: 20px;
            font-size: 13px;
            transition: all var(--transition);
        }

        .article-tags .tag:hover {
            background: rgba(30,64,175,0.1);
            color: var(--primary);
        }

        /* ========== SIDEBAR ========== */
        .article-sidebar {
            position: sticky;
            top: calc(var(--nav-height) + 24px);
        }

        .sidebar-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            margin-bottom: 20px;
        }

        .sidebar-card h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--border-light);
        }

        .sidebar-card ul {
            list-style: none;
        }

        .sidebar-card ul li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
        }

        .sidebar-card ul li:last-child {
            border-bottom: none;
        }

        .sidebar-card ul li a {
            font-size: 14px;
            color: var(--text-secondary);
            transition: color var(--transition);
            display: block;
            line-height: 1.5;
        }

        .sidebar-card ul li a:hover {
            color: var(--primary);
        }

        .sidebar-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border-radius: var(--radius-lg);
            padding: 24px;
            text-align: center;
            box-shadow: var(--shadow-md);
        }

        .sidebar-cta h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            color: #fff;
        }

        .sidebar-cta p {
            font-size: 14px;
            opacity: 0.9;
            margin-bottom: 16px;
            line-height: 1.5;
        }

        .sidebar-cta .btn-sidebar {
            display: inline-block;
            padding: 10px 24px;
            background: var(--accent);
            color: #fff;
            border-radius: 25px;
            font-weight: 600;
            font-size: 14px;
            transition: all var(--transition);
        }

        .sidebar-cta .btn-sidebar:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }

        /* ========== RELATED POSTS ========== */
        .related-section {
            padding: 50px 0;
            background: var(--bg-white);
            border-top: 1px solid var(--border);
        }

        .related-section .section-title {
            font-size: 24px;
            font-weight: 700;
            color: var(--text);
            text-align: center;
            margin-bottom: 32px;
            letter-spacing: -0.3px;
        }

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

        .related-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all var(--transition-slow);
            box-shadow: var(--shadow-sm);
        }

        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(30,64,175,0.2);
        }

        .related-card-img {
            aspect-ratio: 16/10;
            overflow: hidden;
            background: var(--border-light);
        }

        .related-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform var(--transition-slow);
        }

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

        .related-card-body {
            padding: 18px 20px;
        }

        .related-card-body .card-tag {
            font-size: 12px;
            color: var(--primary);
            font-weight: 600;
            margin-bottom: 8px;
            display: inline-block;
        }

        .related-card-body h5 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.4;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card-body .card-meta {
            font-size: 13px;
            color: var(--text-muted);
        }

        .related-card-body a {
            color: inherit;
            transition: color var(--transition);
        }

        .related-card-body a:hover h5 {
            color: var(--primary);
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            padding: 60px 0;
            background: var(--bg-dark);
            text-align: center;
            color: #fff;
        }

        .cta-section h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }

        .cta-section p {
            font-size: 16px;
            color: var(--text-light);
            margin-bottom: 28px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-section .btn-cta {
            display: inline-block;
            padding: 14px 36px;
            background: var(--accent);
            color: #fff;
            border-radius: 30px;
            font-weight: 700;
            font-size: 16px;
            transition: all var(--transition);
            letter-spacing: 0.3px;
        }

        .cta-section .btn-cta:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(245,158,11,0.4);
        }

        /* ========== FAQ ========== */
        .faq-section {
            padding: 60px 0;
            background: var(--bg);
        }

        .faq-section .section-title {
            font-size: 24px;
            font-weight: 700;
            color: var(--text);
            text-align: center;
            margin-bottom: 36px;
            letter-spacing: -0.3px;
        }

        .faq-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            max-width: 900px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 22px 26px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(30,64,175,0.25);
            box-shadow: var(--shadow-md);
        }

        .faq-item h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }

        .faq-item h4 .faq-q {
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 26px;
            height: 26px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            font-size: 13px;
            font-weight: 700;
        }

        .faq-item p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            padding-left: 36px;
        }

        /* ========== NOT FOUND STATE ========== */
        .not-found-state {
            text-align: center;
            padding: 80px 40px;
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }

        .not-found-state .nf-icon {
            font-size: 64px;
            margin-bottom: 20px;
            display: block;
        }

        .not-found-state h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
        }

        .not-found-state p {
            color: var(--text-muted);
            margin-bottom: 24px;
            font-size: 16px;
        }

        .not-found-state .btn-back {
            display: inline-block;
            padding: 12px 28px;
            background: var(--primary);
            color: #fff;
            border-radius: 25px;
            font-weight: 600;
            transition: all var(--transition);
        }

        .not-found-state .btn-back:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        /* ========== FOOTER ========== */
        .footer {
            background: var(--bg-dark);
            color: #fff;
            padding: 48px 0 24px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer-col h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 14px;
            color: #fff;
        }

        .footer-col p {
            color: #94A3B8;
            font-size: 14px;
            line-height: 1.7;
        }

        .footer-links {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 8px;
        }

        .footer-links li a {
            color: #94A3B8;
            font-size: 14px;
            transition: color var(--transition);
        }

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

        .footer-copy {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            font-size: 13px;
            color: #64748B;
            text-align: center;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .article-container {
                grid-template-columns: 1fr;
                gap: 30px;
            }

            .article-sidebar {
                position: static;
            }

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

            .faq-grid {
                grid-template-columns: 1fr;
                max-width: 600px;
            }

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

            .article-content-area {
                padding: 28px 24px;
            }

            .nav-left a, .nav-right a {
                padding: 8px 12px;
                font-size: 14px;
            }

            .nav-cta {
                padding: 7px 15px;
                font-size: 13px;
            }

            .nav-logo a {
                font-size: 17px;
            }
        }

        @media (max-width: 768px) {
            .nav-left, .nav-right {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .header-inner {
                justify-content: space-between;
                padding: 0 16px;
            }

            .nav-logo {
                flex: 1;
                text-align: left;
                padding: 0;
            }

            .nav-logo a {
                font-size: 16px;
            }

            .nav-logo .logo-icon {
                width: 30px;
                height: 30px;
                margin-right: 4px;
            }

            .nav-logo .logo-icon::after {
                font-size: 15px;
            }

            .mobile-menu a.nav-cta-mobile {
                display: inline-block;
                background: var(--primary);
                color: #fff;
                text-align: center;
                margin-top: 8px;
            }

            .article-main {
                padding: 24px 0 40px;
            }

            .article-content-area {
                padding: 20px 18px;
                border-radius: var(--radius);
            }

            .article-title {
                font-size: 22px;
            }

            .article-meta {
                gap: 12px;
                font-size: 13px;
            }

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

            .related-section {
                padding: 36px 0;
            }

            .cta-section {
                padding: 40px 0;
            }

            .cta-section h2 {
                font-size: 22px;
            }

            .faq-section {
                padding: 40px 0;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .container, .container-narrow {
                padding: 0 16px;
            }

            .breadcrumb {
                font-size: 13px;
            }

            .article-body {
                font-size: 15px;
            }

            .article-body h2 {
                font-size: 20px;
            }

            .article-body h3 {
                font-size: 17px;
            }
        }

        @media (max-width: 520px) {
            .article-title {
                font-size: 20px;
            }

            .article-content-area {
                padding: 16px 14px;
            }

            .article-body {
                font-size: 14px;
                line-height: 1.75;
            }

            .article-body h2 {
                font-size: 18px;
                margin: 24px 0 12px;
            }

            .related-card-body {
                padding: 14px 16px;
            }

            .related-card-body h5 {
                font-size: 15px;
            }

            .sidebar-card {
                padding: 18px;
            }

            .nav-logo a {
                font-size: 15px;
            }

            .faq-item {
                padding: 16px 18px;
            }

            .faq-item h4 {
                font-size: 15px;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #1a2d4a;
            --color-primary-light: #243b5e;
            --color-primary-dark: #0f1c30;
            --color-accent: #e8913a;
            --color-accent-hover: #d17a2a;
            --color-accent-light: #fdf0e4;
            --color-bg: #f6f8fb;
            --color-bg-alt: #eef2f7;
            --color-surface: #ffffff;
            --color-text: #1e293b;
            --color-text-secondary: #64748b;
            --color-text-weak: #94a3b8;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --color-success: #10b981;
            --color-tag-bg: #eff6ff;
            --color-tag-text: #3b82f6;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 10px 28px rgba(0, 0, 0, 0.09), 0 4px 10px rgba(0, 0, 0, 0.05);
            --shadow-xl: 0 18px 42px rgba(0, 0, 0, 0.11), 0 6px 16px rgba(0, 0, 0, 0.06);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-base: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1240px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.65;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

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

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            outline: none;
            transition: all var(--transition-fast);
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2.5px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }

        input {
            font-family: inherit;
            font-size: inherit;
        }

        ul {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 28px;
        }

        /* ===== HEADER & NAV ===== */
        .header {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border-light);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-xs);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 66px;
            gap: 20px;
        }

        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
            min-width: 0;
        }

        .nav-left {
            justify-content: flex-end;
        }

        .nav-right {
            justify-content: flex-start;
        }

        .nav-left a,
        .nav-right a {
            display: inline-flex;
            align-items: center;
            padding: 9px 18px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .nav-left a:hover,
        .nav-right a:hover {
            color: var(--color-primary);
            background: var(--color-bg-alt);
        }

        .nav-left a.active,
        .nav-right a.active {
            color: var(--color-accent);
            background: var(--color-accent-light);
            font-weight: 600;
        }

        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 60%, #3b6db5 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            letter-spacing: 0.02em;
        }

        .logo-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
        }

        .logo-link:hover .logo-text {
            color: var(--color-primary-light);
        }

        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            align-items: center;
            justify-content: center;
            color: var(--color-text);
            font-size: 22px;
            cursor: pointer;
            transition: all var(--transition-fast);
        }

        .mobile-menu-btn:hover {
            background: var(--color-bg-alt);
            color: var(--color-primary);
        }

        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: 66px;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(15, 28, 48, 0.6);
            z-index: 999;
            opacity: 0;
            transition: opacity var(--transition-base);
            pointer-events: none;
        }

        .mobile-nav-overlay.show {
            opacity: 1;
            pointer-events: auto;
        }

        .mobile-nav-panel {
            display: none;
            position: fixed;
            top: 66px;
            right: 0;
            width: 300px;
            max-width: 85vw;
            bottom: 0;
            background: var(--color-surface);
            z-index: 1000;
            padding: 24px 20px;
            flex-direction: column;
            gap: 6px;
            box-shadow: var(--shadow-xl);
            transform: translateX(100%);
            transition: transform var(--transition-base);
            overflow-y: auto;
        }

        .mobile-nav-panel.show {
            transform: translateX(0);
        }

        .mobile-nav-panel a {
            display: block;
            padding: 12px 16px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
        }

        .mobile-nav-panel a:hover {
            background: var(--color-bg-alt);
            color: var(--color-primary);
        }

        .mobile-nav-panel a.active {
            color: var(--color-accent);
            background: var(--color-accent-light);
            font-weight: 600;
        }

        /* ===== BREADCRUMB ===== */
        .breadcrumb-bar {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border-light);
            padding: 12px 0;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-text-weak);
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--color-text-secondary);
            transition: color var(--transition-fast);
        }

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

        .breadcrumb .sep {
            color: var(--color-border);
            user-select: none;
        }

        .breadcrumb .current {
            color: var(--color-text);
            font-weight: 500;
        }

        /* ===== CATEGORY BANNER ===== */
        .cat-banner {
            position: relative;
            background: var(--color-primary-dark);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 64px 0 60px;
            overflow: hidden;
        }

        .cat-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 28, 48, 0.88) 0%, rgba(26, 45, 74, 0.78) 50%, rgba(15, 28, 48, 0.85) 100%);
            z-index: 1;
        }

        .cat-banner .container {
            position: relative;
            z-index: 2;
        }

        .cat-banner-content {
            max-width: 700px;
        }

        .cat-badge {
            display: inline-block;
            padding: 5px 14px;
            background: rgba(232, 145, 58, 0.2);
            border: 1px solid rgba(232, 145, 58, 0.35);
            border-radius: 20px;
            color: var(--color-accent);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.03em;
            margin-bottom: 16px;
        }

        .cat-banner h1 {
            font-size: clamp(1.8rem, 3.5vw, 2.6rem);
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.01em;
            line-height: 1.3;
        }

        .cat-banner p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.78);
            line-height: 1.7;
            margin-bottom: 20px;
            max-width: 540px;
        }

        .cat-stats-row {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
        }

        .cat-stat-item {
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, 0.85);
            font-size: 14px;
        }

        .cat-stat-item .stat-num {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-accent);
        }

        /* ===== MAIN LAYOUT ===== */
        .main-content {
            padding: 48px 0 60px;
            flex: 1;
        }

        .content-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 36px;
            align-items: start;
        }

        /* ===== ARTICLE GRID ===== */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .article-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            border: 1px solid var(--color-border-light);
            position: relative;
        }

        .article-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: var(--color-border);
        }

        .article-card-img {
            position: relative;
            width: 100%;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--color-bg-alt);
        }

        .article-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

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

        .article-card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 11px;
            background: var(--color-accent);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            border-radius: 20px;
            letter-spacing: 0.02em;
            z-index: 2;
        }

        .article-card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .article-card-body h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text);
            line-height: 1.45;
        }

        .article-card-body h3 a {
            color: inherit;
            transition: color var(--transition-fast);
        }

        .article-card-body h3 a:hover {
            color: var(--color-accent);
        }

        .article-card-body .article-excerpt {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.6;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 13px;
            color: var(--color-text-weak);
            padding-top: 4px;
        }

        .article-card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* ===== SIDEBAR ===== */
        .sidebar {
            position: sticky;
            top: 90px;
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .sidebar-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 22px 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
        }

        .sidebar-card h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--color-accent-light);
            letter-spacing: 0.01em;
        }

        .sidebar-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .sidebar-tag {
            display: inline-block;
            padding: 6px 13px;
            background: var(--color-tag-bg);
            color: var(--color-tag-text);
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
        }

        .sidebar-tag:hover {
            background: #dbeafe;
            border-color: #93c5fd;
            color: #2563eb;
            transform: translateY(-1px);
        }

        .sidebar-post-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .sidebar-post-item {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--color-border-light);
        }

        .sidebar-post-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .sidebar-post-thumb {
            width: 64px;
            height: 48px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
            background: var(--color-bg-alt);
        }

        .sidebar-post-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .sidebar-post-info {
            flex: 1;
            min-width: 0;
        }

        .sidebar-post-info a {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition-fast);
        }

        .sidebar-post-info a:hover {
            color: var(--color-accent);
        }

        .sidebar-post-info .post-date {
            font-size: 12px;
            color: var(--color-text-weak);
            margin-top: 4px;
        }

        /* ===== PAGINATION ===== */
        .pagination-wrap {
            display: flex;
            justify-content: center;
            padding: 40px 0 0;
        }

        .pagination {
            display: flex;
            gap: 6px;
            align-items: center;
        }

        .pagination .page-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            padding: 0 10px;
            border-radius: var(--radius-md);
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            cursor: pointer;
            transition: all var(--transition-fast);
            user-select: none;
        }

        .pagination .page-btn:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            background: var(--color-accent-light);
        }

        .pagination .page-btn.active {
            background: var(--color-accent);
            color: #fff;
            border-color: var(--color-accent);
            font-weight: 600;
        }

        .pagination .page-btn.disabled {
            opacity: 0.4;
            pointer-events: none;
            cursor: default;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 56px 0 60px;
            background: var(--color-surface);
            border-top: 1px solid var(--color-border-light);
            border-bottom: 1px solid var(--color-border-light);
        }

        .faq-section .section-header {
            text-align: center;
            margin-bottom: 36px;
        }

        .faq-section .section-header h2 {
            font-size: clamp(1.5rem, 2.5vw, 1.9rem);
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 10px;
        }

        .faq-section .section-header p {
            color: var(--color-text-secondary);
            font-size: 15px;
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .faq-item {
            background: var(--color-bg);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: var(--color-border);
            box-shadow: var(--shadow-sm);
        }

        .faq-item summary {
            padding: 18px 22px;
            font-weight: 600;
            font-size: 15px;
            color: var(--color-text);
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            user-select: none;
            transition: color var(--transition-fast);
        }

        .faq-item summary:hover {
            color: var(--color-accent);
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::after {
            content: '+';
            font-size: 20px;
            font-weight: 400;
            color: var(--color-text-weak);
            transition: all var(--transition-base);
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
        }

        .faq-item[open] summary::after {
            content: '−';
            color: var(--color-accent);
            border-color: var(--color-accent);
            background: var(--color-accent-light);
        }

        .faq-item[open] summary {
            color: var(--color-accent);
        }

        .faq-item .faq-answer {
            padding: 0 22px 18px;
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 56px 0 60px;
            background: var(--color-bg-alt);
            text-align: center;
        }

        .cta-section h2 {
            font-size: clamp(1.4rem, 2.4vw, 1.8rem);
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 10px;
        }

        .cta-section p {
            color: var(--color-text-secondary);
            font-size: 15px;
            margin-bottom: 24px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            background: var(--color-accent);
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            border-radius: var(--radius-md);
            transition: all var(--transition-base);
            letter-spacing: 0.01em;
            box-shadow: 0 4px 14px rgba(232, 145, 58, 0.3);
        }

        .cta-btn:hover {
            background: var(--color-accent-hover);
            box-shadow: 0 6px 22px rgba(232, 145, 58, 0.4);
            transform: translateY(-2px);
        }

        .cta-btn:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(232, 145, 58, 0.3);
        }

        /* ===== FOOTER ===== */
        .footer {
            background: var(--color-primary-dark);
            color: #cbd5e1;
            padding: 48px 0 28px;
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr;
            gap: 36px;
            margin-bottom: 32px;
        }

        .footer-col h4 {
            font-size: 17px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.01em;
        }

        .footer-col p {
            font-size: 14px;
            line-height: 1.7;
            color: #94a3b8;
            max-width: 360px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-links a {
            font-size: 14px;
            color: #94a3b8;
            transition: color var(--transition-fast);
            display: inline-block;
            padding: 3px 0;
        }

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

        .footer-copy {
            text-align: center;
            padding-top: 22px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 13px;
            color: #64748b;
        }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .content-layout {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .sidebar {
                position: static;
                flex-direction: row;
                flex-wrap: wrap;
                gap: 16px;
            }

            .sidebar-card {
                flex: 1 1 260px;
                min-width: 240px;
            }

            .article-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }

            .cat-banner {
                padding: 48px 0 44px;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                height: 58px;
                gap: 10px;
            }

            .nav-left,
            .nav-right {
                display: none;
            }

            .mobile-menu-btn {
                display: flex;
            }

            .mobile-nav-overlay,
            .mobile-nav-panel {
                display: flex;
            }

            .mobile-nav-overlay {
                display: block;
            }

            .logo-text {
                font-size: 16px;
            }

            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 15px;
            }

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

            .cat-banner {
                padding: 36px 0 34px;
            }

            .cat-banner h1 {
                font-size: 1.5rem;
            }

            .cat-banner p {
                font-size: 14px;
            }

            .cat-stats-row {
                gap: 16px;
            }

            .cat-stat-item .stat-num {
                font-size: 18px;
            }

            .main-content {
                padding: 32px 0 40px;
            }

            .container {
                padding: 0 16px;
            }

            .sidebar {
                flex-direction: column;
            }

            .sidebar-card {
                flex: none;
                min-width: auto;
            }

            .faq-section {
                padding: 40px 0 44px;
            }

            .cta-section {
                padding: 40px 0 44px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .pagination .page-btn {
                min-width: 34px;
                height: 34px;
                font-size: 13px;
            }

            .mobile-nav-panel {
                top: 58px;
            }

            .mobile-nav-overlay {
                top: 58px;
            }
        }

        @media (max-width: 520px) {
            .cat-banner {
                padding: 28px 0 26px;
            }

            .cat-banner h1 {
                font-size: 1.3rem;
            }

            .cat-stats-row {
                gap: 10px;
            }

            .cat-stat-item {
                font-size: 12px;
            }

            .cat-stat-item .stat-num {
                font-size: 16px;
            }

            .article-card-body {
                padding: 14px 16px 16px;
            }

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

            .faq-item summary {
                padding: 14px 16px;
                font-size: 14px;
            }

            .faq-item .faq-answer {
                padding: 0 16px 14px;
                font-size: 13px;
            }

            .cta-btn {
                padding: 12px 24px;
                font-size: 14px;
            }

            .pagination-wrap {
                padding: 28px 0 0;
            }
        }