/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
  --primary: #2a7a7b;
  --primary-light: #4a9d9e;
  --primary-dark: #1a5c5d;
  --primary-bg: #e8f4f5;
  --secondary: #d4a56a;
  --secondary-light: #f0e0c4;
  --accent: #f7f3ee;
  --bg: #ffffff;
  --bg-alt: #f5fafb;
  --bg-dark: #1a2e2f;
  --text: #1e2a2a;
  --text-light: #6b7a7a;
  --text-white: #f0f7f8;
  --border: #dce8e8;
  --shadow-sm: 0 2px 8px rgba(42, 122, 123, 0.08);
  --shadow: 0 6px 28px rgba(42, 122, 123, 0.10);
  --shadow-lg: 0 12px 48px rgba(42, 122, 123, 0.14);
  --radius: 14px;
  --radius-sm: 8px;
  --radius-lg: 22px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  --max-width: 1200px;
  --header-h: 76px;
}

/* ===== 基础 Reset / Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
}
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-dark); }
a:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 2px; }
img { max-width: 100%; height: auto; display: block; }
button, input, textarea, select { font-family: inherit; font-size: inherit; }
button { cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text); }

/* ===== 容器 ===== */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
@media (max-width: 520px) { .container { padding: 0 16px; } }

/* ===== 板块间距 ===== */
.section { padding: 88px 0; }
.section-alt { background: var(--bg-alt); }
.section-dark { background: var(--bg-dark); color: var(--text-white); }
.section-title {
  text-align: center;
  margin-bottom: 52px;
}
.section-title h2 {
  font-size: 2.2rem;
  margin-bottom: 12px;
  color: var(--text);
  letter-spacing: 1px;
}
.section-title p {
  font-size: 1.08rem;
  color: var(--text-light);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.7;
}
.section-dark .section-title h2,
.section-dark .section-title p { color: var(--text-white); }
.section-dark .section-title p { opacity: 0.8; }
@media (max-width: 768px) {
  .section { padding: 60px 0; }
  .section-title h2 { font-size: 1.7rem; }
  .section-title { margin-bottom: 36px; }
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 30px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.98rem;
  transition: all var(--transition);
  border: 2px solid transparent;
  white-space: nowrap;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.btn-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(42,122,123,0.35);
}
.btn-primary:active { transform: translateY(0); box-shadow: 0 4px 12px rgba(42,122,123,0.25); }
.btn-secondary {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-secondary:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(42,122,123,0.20);
}
.btn-secondary:active { transform: translateY(0); }
.btn-light {
  background: rgba(255,255,255,0.15);
  color: #fff;
  border-color: rgba(255,255,255,0.5);
  backdrop-filter: blur(4px);
}
.btn-light:hover {
  background: rgba(255,255,255,0.25);
  color: #fff;
  border-color: #fff;
  transform: translateY(-2px);
}
@media (max-width: 520px) {
  .btn { padding: 10px 22px; font-size: 0.9rem; }
}

/* ===== 徽章 / 标签 ===== */
.badge {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 50px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.3px;
  background: var(--primary-bg);
  color: var(--primary);
}
.badge-warm { background: var(--secondary-light); color: #8a6a3a; }
.badge-white { background: rgba(255,255,255,0.2); color: #fff; }

/* ===== 卡片 ===== */
.card {
  background: var(--bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: all var(--transition);
}
.card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}
.card-img { width: 100%; aspect-ratio: 16/10; object-fit: cover; display: block; }
.card-body { padding: 24px; }
.card-body h3 { font-size: 1.18rem; margin-bottom: 8px; }
.card-body p { font-size: 0.93rem; color: var(--text-light); line-height: 1.6; }
.card-tag { margin-bottom: 10px; }

/* ===== 网格 ===== */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 28px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; gap: 24px; }
  .grid-4 { grid-template-columns: 1fr 1fr; gap: 16px; }
}
@media (max-width: 520px) {
  .grid-4 { grid-template-columns: 1fr; }
}

/* ===== Header / Nav ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition);
}
.header.scrolled { box-shadow: 0 2px 24px rgba(0,0,0,0.06); }
.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: 0.5px;
}
.logo i { color: var(--primary); font-size: 1.6rem; }
.logo:hover { color: var(--primary); }
.logo span { color: var(--primary); }
.nav { display: flex; align-items: center; gap: 8px; }
.nav a {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-light);
  transition: all var(--transition);
}
.nav a:hover { color: var(--primary); background: var(--primary-bg); }
.nav a.active {
  color: #fff;
  background: var(--primary);
  box-shadow: 0 4px 14px rgba(42,122,123,0.25);
}
.nav a.active:hover { color: #fff; background: var(--primary-dark); }
.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; cursor: pointer; background: none; border: none; }
.nav-toggle span { display: block; width: 26px; height: 2.5px; background: var(--text); border-radius: 4px; transition: all var(--transition); }
.nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }
@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    padding: 20px 24px 28px;
    gap: 6px;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 12px 32px rgba(0,0,0,0.08);
    transform: translateY(-110%);
    opacity: 0;
    transition: all var(--transition);
    pointer-events: none;
  }
  .nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav a {
    width: 100%;
    justify-content: center;
    padding: 12px 18px;
    font-size: 1.05rem;
  }
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 82vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  background: linear-gradient(135deg, #0f2a2b 0%, #1a4a4b 50%, #2a6a6b 100%);
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  opacity: 0.20;
  mix-blend-mode: overlay;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(42,122,123,0.25) 0%, transparent 70%);
}
.hero-content { position: relative; z-index: 2; max-width: 820px; }
.hero-badge {
  display: inline-block;
  padding: 6px 22px;
  border-radius: 50px;
  background: rgba(255,255,255,0.12);
  backdrop-filter: blur(4px);
  color: rgba(255,255,255,0.9);
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: 1px;
  margin-bottom: 24px;
  border: 1px solid rgba(255,255,255,0.15);
}
.hero h1 {
  font-size: 3.4rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 18px;
  letter-spacing: 1px;
  text-shadow: 0 2px 20px rgba(0,0,0,0.2);
}
.hero h1 span { color: #7fc9ca; }
.hero p {
  font-size: 1.2rem;
  color: rgba(255,255,255,0.8);
  max-width: 600px;
  margin: 0 auto 36px;
  line-height: 1.7;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; }
.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  justify-content: center;
  margin-top: 56px;
  padding-top: 40px;
  border-top: 1px solid rgba(255,255,255,0.12);
}
.hero-stat { text-align: center; }
.hero-stat .num {
  font-size: 2.2rem;
  font-weight: 800;
  color: #7fc9ca;
  line-height: 1.2;
}
.hero-stat .label {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.6);
  margin-top: 4px;
}
@media (max-width: 768px) {
  .hero { min-height: 70vh; padding: 100px 20px 60px; }
  .hero h1 { font-size: 2.2rem; }
  .hero p { font-size: 1.0rem; }
  .hero-stats { gap: 24px; }
  .hero-stat .num { font-size: 1.6rem; }
}
@media (max-width: 520px) {
  .hero h1 { font-size: 1.7rem; }
  .hero p { font-size: 0.92rem; }
  .hero-actions { flex-direction: column; align-items: center; }
  .hero-stats { gap: 16px; }
}

/* ===== 特色板块 ===== */
.features-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 28px; }
.feature-card {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  border: 1px solid var(--border);
  transition: all var(--transition);
  box-shadow: var(--shadow-sm);
}
.feature-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-6px);
  border-color: var(--primary-light);
}
.feature-card .icon {
  width: 64px;
  height: 64px;
  border-radius: 18px;
  background: var(--primary-bg);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin: 0 auto 18px;
  transition: all var(--transition);
}
.feature-card:hover .icon { background: var(--primary); color: #fff; }
.feature-card h3 { font-size: 1.2rem; margin-bottom: 10px; }
.feature-card p { font-size: 0.92rem; color: var(--text-light); line-height: 1.6; }
@media (max-width: 768px) { .features-grid { grid-template-columns: 1fr; gap: 20px; } }

/* ===== 分类入口 ===== */
.category-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg);
  border: 1px solid var(--border);
  transition: all var(--transition);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}
.category-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}
.category-card .card-img { aspect-ratio: 16/9; }
.category-card .card-body { padding: 20px 24px 24px; flex: 1; display: flex; flex-direction: column; }
.category-card .card-body h3 { font-size: 1.15rem; margin-bottom: 6px; }
.category-card .card-body p { font-size: 0.9rem; color: var(--text-light); flex: 1; }
.category-card .card-footer { margin-top: 14px; }

/* ===== 资讯列表 ===== */
.news-list { display: flex; flex-direction: column; gap: 20px; }
.news-item {
  display: flex;
  gap: 24px;
  background: var(--bg);
  border-radius: var(--radius);
  padding: 20px 24px;
  border: 1px solid var(--border);
  transition: all var(--transition);
  box-shadow: var(--shadow-sm);
  align-items: flex-start;
}
.news-item:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
  border-color: var(--primary-light);
}
.news-item .thumb {
  width: 160px;
  min-height: 100px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  flex-shrink: 0;
  background: var(--bg-alt);
}
.news-item .info { flex: 1; min-width: 0; }
.news-item .info h3 { font-size: 1.08rem; margin-bottom: 6px; font-weight: 600; }
.news-item .info h3 a { color: var(--text); }
.news-item .info h3 a:hover { color: var(--primary); }
.news-item .meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  font-size: 0.82rem;
  color: var(--text-light);
  margin-bottom: 8px;
}
.news-item .meta i { margin-right: 4px; }
.news-item .excerpt {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-light);
  font-size: 1.05rem;
  background: var(--bg-alt);
  border-radius: var(--radius);
  border: 1px dashed var(--border);
}
@media (max-width: 768px) {
  .news-item { flex-direction: column; padding: 16px; }
  .news-item .thumb { width: 100%; height: 180px; }
}
@media (max-width: 520px) {
  .news-item .thumb { height: 140px; }
}

/* ===== 数据统计 ===== */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat-card {
  text-align: center;
  padding: 36px 20px;
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}
.stat-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}
.stat-card .num {
  font-size: 2.6rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
  margin-bottom: 6px;
}
.stat-card .num i { font-size: 0.6em; vertical-align: super; color: var(--primary-light); }
.stat-card .label {
  font-size: 0.92rem;
  color: var(--text-light);
  font-weight: 500;
}
@media (max-width: 768px) { .stats-grid { grid-template-columns: 1fr 1fr; gap: 16px; } }
@media (max-width: 520px) { .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .stat-card { padding: 24px 12px; }
  .stat-card .num { font-size: 1.8rem; }
}

/* ===== FAQ ===== */
.faq-list { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--bg);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: all var(--transition);
}
.faq-item:hover { border-color: var(--primary-light); }
.faq-q {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 24px;
  font-weight: 600;
  font-size: 1.0rem;
  cursor: pointer;
  transition: background var(--transition);
  gap: 16px;
}
.faq-q:hover { background: var(--primary-bg); }
.faq-q i { color: var(--primary); font-size: 0.9rem; transition: transform var(--transition); }
.faq-item.open .faq-q i { transform: rotate(180deg); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  padding: 0 24px;
  color: var(--text-light);
  font-size: 0.95rem;
  line-height: 1.7;
  transition: all var(--transition);
}
.faq-item.open .faq-a {
  max-height: 300px;
  padding: 0 24px 20px;
}
@media (max-width: 520px) {
  .faq-q { padding: 14px 16px; font-size: 0.92rem; }
  .faq-item.open .faq-a { padding: 0 16px 16px; }
}

/* ===== CTA ===== */
.cta-box {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
  border-radius: var(--radius-lg);
  padding: 64px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-box::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  opacity: 0.06;
  mix-blend-mode: overlay;
}
.cta-box h2 { color: #fff; font-size: 2.0rem; margin-bottom: 12px; position: relative; }
.cta-box p { color: rgba(255,255,255,0.8); font-size: 1.05rem; max-width: 560px; margin: 0 auto 28px; position: relative; }
.cta-box .btn { position: relative; }
@media (max-width: 768px) {
  .cta-box { padding: 44px 24px; }
  .cta-box h2 { font-size: 1.5rem; }
}
@media (max-width: 520px) {
  .cta-box { padding: 36px 16px; border-radius: var(--radius); }
  .cta-box h2 { font-size: 1.25rem; }
}

/* ===== 页脚 ===== */
.footer {
  background: var(--bg-dark);
  color: var(--text-white);
  padding: 56px 0 32px;
}
.footer-top { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand .logo { color: #fff; margin-bottom: 12px; }
.footer-brand .logo i { color: #7fc9ca; }
.footer-brand .logo span { color: #7fc9ca; }
.footer-brand p { font-size: 0.9rem; color: rgba(255,255,255,0.6); max-width: 300px; line-height: 1.7; }
.footer-col h4 { font-size: 1.0rem; color: #fff; margin-bottom: 16px; font-weight: 600; }
.footer-col a {
  display: block;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.55);
  margin-bottom: 10px;
  transition: color var(--transition);
}
.footer-col a:hover { color: #7fc9ca; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 24px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.4);
}
.footer-bottom a { color: rgba(255,255,255,0.5); }
.footer-bottom a:hover { color: #7fc9ca; }
@media (max-width: 768px) {
  .footer-top { grid-template-columns: 1fr 1fr; gap: 28px; }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 520px) {
  .footer-top { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* ===== 分割线 ===== */
.divider { width: 60px; height: 3px; background: var(--primary); border-radius: 4px; margin: 0 auto 16px; }
.section-dark .divider { background: #7fc9ca; }

/* ===== 辅助 ===== */
.text-center { text-align: center; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.gap-12 { gap: 12px; }
.flex-center { display: flex; align-items: center; justify-content: center; }

/* ===== 响应式微调 ===== */
@media (max-width: 1024px) {
  :root { --max-width: 960px; }
}
@media (max-width: 768px) {
  :root { --header-h: 64px; }
}

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a6b4a;
            --primary-light: #2d8f64;
            --primary-dark: #0f4d35;
            --primary-bg: #e8f5ee;
            --accent: #d4a843;
            --accent-light: #e8c56a;
            --accent-dark: #b8922e;
            --bg-body: #f9fbfa;
            --bg-card: #ffffff;
            --bg-dark: #0f2e22;
            --bg-muted: #f0f5f2;
            --text-primary: #1a2e26;
            --text-body: #2d4038;
            --text-muted: #6b7d76;
            --text-light: #9aaca4;
            --text-white: #f5faf7;
            --border: #dce6e1;
            --border-light: #eaf1ed;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 30px;
            --shadow-sm: 0 2px 8px rgba(15, 45, 35, 0.06);
            --shadow-md: 0 6px 24px rgba(15, 45, 35, 0.08);
            --shadow-lg: 0 16px 48px rgba(15, 45, 35, 0.12);
            --shadow-xl: 0 24px 64px rgba(15, 45, 35, 0.16);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --header-h: 76px;
        }

        /* ===== 基础重置 ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-body);
            min-height: 100vh;
            padding-top: var(--header-h);
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover, a:focus-visible { color: var(--primary-light); }
        a:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 4px; }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        button, input, textarea, select { font-family: inherit; font-size: inherit; transition: var(--transition); }
        button { cursor: pointer; border: none; background: none; }
        button:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { color: var(--text-primary); font-weight: 700; line-height: 1.3; letter-spacing: -0.01em; }
        h1 { font-size: 2.4rem; }
        h2 { font-size: 1.8rem; }
        h3 { font-size: 1.4rem; }
        h4 { font-size: 1.15rem; }
        p { margin-bottom: 1em; }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

        /* ===== Header / 导航 ===== */
        .header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            background: rgba(255,255,255,0.96); backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            height: var(--header-h);
            box-shadow: 0 1px 12px rgba(15,45,35,0.04);
        }
        .header .container { display: flex; align-items: center; justify-content: space-between; height: 100%; }
        .logo {
            display: flex; align-items: center; gap: 10px;
            font-size: 1.5rem; font-weight: 800; color: var(--text-primary);
            letter-spacing: -0.5px;
        }
        .logo i { color: var(--accent); font-size: 1.6rem; }
        .logo span { color: var(--primary); font-weight: 700; }
        .logo:hover { color: var(--text-primary); opacity: 0.9; }
        .nav { display: flex; align-items: center; gap: 6px; }
        .nav a {
            display: flex; align-items: center; gap: 6px;
            padding: 10px 20px; border-radius: var(--radius-sm);
            font-size: 0.95rem; font-weight: 500; color: var(--text-muted);
            transition: var(--transition); white-space: nowrap;
        }
        .nav a i { font-size: 0.9rem; opacity: 0.7; }
        .nav a:hover { color: var(--primary); background: var(--primary-bg); }
        .nav a.active, .nav a[aria-current="page"] {
            color: var(--primary-dark); background: var(--primary-bg);
            font-weight: 600;
        }
        .nav a.active i { opacity: 1; color: var(--primary); }
        .nav-toggle {
            display: none; flex-direction: column; gap: 5px;
            padding: 8px 12px; border-radius: var(--radius-sm);
            background: var(--bg-muted); cursor: pointer;
        }
        .nav-toggle span { display: block; width: 24px; height: 2.5px; background: var(--text-primary); border-radius: 4px; transition: var(--transition); }
        .nav-toggle:hover { background: var(--border-light); }

        /* ===== 文章 Banner ===== */
        .article-banner {
            position: relative;
            background: var(--bg-dark) url('/assets/images/backpic/back-2.png') no-repeat center / cover;
            min-height: 320px;
            display: flex; align-items: center;
            isolation: isolate;
        }
        .article-banner::before {
            content: ''; position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(15,46,34,0.88) 0%, rgba(15,46,34,0.55) 100%);
            z-index: 0;
        }
        .article-banner .container { position: relative; z-index: 1; padding-top: 40px; padding-bottom: 40px; }
        .article-banner .breadcrumb {
            display: flex; align-items: center; gap: 10px;
            color: rgba(255,255,255,0.65); font-size: 0.85rem;
            margin-bottom: 20px; flex-wrap: wrap;
        }
        .article-banner .breadcrumb a { color: rgba(255,255,255,0.75); }
        .article-banner .breadcrumb a:hover { color: var(--accent-light); }
        .article-banner .breadcrumb span { color: var(--accent-light); font-weight: 500; }
        .article-banner h1 {
            color: var(--text-white); font-size: 2.6rem; font-weight: 800;
            max-width: 860px; letter-spacing: -0.02em;
            line-height: 1.25; text-shadow: 0 2px 12px rgba(0,0,0,0.15);
        }
        .article-banner .meta {
            display: flex; flex-wrap: wrap; gap: 18px;
            margin-top: 20px; color: rgba(255,255,255,0.75);
            font-size: 0.9rem;
        }
        .article-banner .meta span { display: flex; align-items: center; gap: 6px; }
        .article-banner .meta i { font-size: 0.85rem; opacity: 0.7; }
        .article-banner .meta .category-tag {
            display: inline-block; padding: 2px 14px; border-radius: 20px;
            background: var(--accent); color: var(--text-primary);
            font-size: 0.8rem; font-weight: 600;
        }

        /* ===== 文章正文 ===== */
        .article-main {
            padding: 50px 0 70px;
            background: var(--bg-body);
        }
        .article-main .container { display: grid; grid-template-columns: 1fr 320px; gap: 48px; align-items: start; }
        .article-content { background: var(--bg-card); border-radius: var(--radius-md); padding: 40px 44px; box-shadow: var(--shadow-sm); border: 1px solid var(--border-light); }
        .article-content .featured-img { margin-bottom: 32px; border-radius: var(--radius-md); overflow: hidden; }
        .article-content .featured-img img { width: 100%; aspect-ratio: 16/9; object-fit: cover; border-radius: var(--radius-md); }
        .article-content .body-text { font-size: 1.05rem; line-height: 1.85; color: var(--text-body); }
        .article-content .body-text p { margin-bottom: 1.2em; }
        .article-content .body-text h2, .article-content .body-text h3 { margin-top: 1.6em; margin-bottom: 0.6em; }
        .article-content .body-text ul, .article-content .body-text ol { margin-bottom: 1.2em; padding-left: 1.6em; }
        .article-content .body-text li { margin-bottom: 0.4em; list-style: disc; }
        .article-content .body-text blockquote {
            border-left: 4px solid var(--primary); background: var(--primary-bg);
            padding: 16px 24px; border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 1.4em 0; font-style: italic;
        }
        .article-content .body-text a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
        .article-content .body-text a:hover { color: var(--primary-dark); }

        .article-notfound {
            text-align: center; padding: 80px 20px; min-height: 40vh;
            display: flex; flex-direction: column; align-items: center; justify-content: center;
        }
        .article-notfound i { font-size: 3.6rem; color: var(--text-light); margin-bottom: 20px; }
        .article-notfound h2 { font-size: 1.8rem; margin-bottom: 12px; }
        .article-notfound p { color: var(--text-muted); margin-bottom: 24px; }
        .article-notfound .btn-back { display: inline-flex; align-items: center; gap: 8px; padding: 12px 32px; background: var(--primary); color: #fff; border-radius: var(--radius-sm); font-weight: 600; }
        .article-notfound .btn-back:hover { background: var(--primary-dark); color: #fff; }

        /* ===== 侧边栏 ===== */
        .article-sidebar { display: flex; flex-direction: column; gap: 28px; }
        .sidebar-card {
            background: var(--bg-card); border-radius: var(--radius-md);
            padding: 26px 28px; border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
        }
        .sidebar-card h3 { font-size: 1.1rem; margin-bottom: 16px; padding-bottom: 10px; border-bottom: 2px solid var(--primary-bg); display: flex; align-items: center; gap: 8px; }
        .sidebar-card h3 i { color: var(--primary); font-size: 1rem; }
        .sidebar-card .related-list { display: flex; flex-direction: column; gap: 12px; }
        .sidebar-card .related-item { display: flex; gap: 12px; align-items: flex-start; padding: 8px 0; border-bottom: 1px solid var(--border-light); }
        .sidebar-card .related-item:last-child { border-bottom: none; }
        .sidebar-card .related-item img { width: 64px; height: 48px; object-fit: cover; border-radius: 6px; flex-shrink: 0; }
        .sidebar-card .related-item .info { flex: 1; min-width: 0; }
        .sidebar-card .related-item .info a { font-size: 0.9rem; font-weight: 600; color: var(--text-primary); display: block; line-height: 1.4; }
        .sidebar-card .related-item .info a:hover { color: var(--primary); }
        .sidebar-card .related-item .info .date { font-size: 0.78rem; color: var(--text-light); margin-top: 4px; display: block; }
        .sidebar-card .cat-list { display: flex; flex-wrap: wrap; gap: 8px; }
        .sidebar-card .cat-list a {
            display: inline-flex; align-items: center; gap: 4px;
            padding: 6px 16px; border-radius: 20px; background: var(--bg-muted);
            font-size: 0.85rem; color: var(--text-muted); border: 1px solid var(--border);
        }
        .sidebar-card .cat-list a:hover { background: var(--primary-bg); color: var(--primary); border-color: var(--primary); }

        .sidebar-card .tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
        .sidebar-card .tag-cloud a {
            padding: 4px 14px; border-radius: 16px; background: var(--bg-muted);
            font-size: 0.8rem; color: var(--text-muted); border: 1px solid var(--border);
        }
        .sidebar-card .tag-cloud a:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

        .sidebar-cta {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            color: var(--text-white); padding: 28px 26px; border-radius: var(--radius-md);
            text-align: center; border: none;
        }
        .sidebar-cta h4 { color: #fff; font-size: 1.1rem; margin-bottom: 8px; }
        .sidebar-cta p { color: rgba(255,255,255,0.8); font-size: 0.9rem; margin-bottom: 16px; }
        .sidebar-cta .btn-cta {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 10px 28px; background: var(--accent); color: var(--text-primary);
            border-radius: var(--radius-sm); font-weight: 600;
        }
        .sidebar-cta .btn-cta:hover { background: var(--accent-light); color: var(--text-primary); }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark); color: rgba(255,255,255,0.7);
            padding: 56px 0 0; margin-top: 0;
        }
        .footer .footer-top { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.08); }
        .footer .logo { color: var(--text-white); margin-bottom: 14px; }
        .footer .logo i { color: var(--accent); }
        .footer .logo span { color: var(--accent-light); }
        .footer-brand p { font-size: 0.88rem; line-height: 1.7; color: rgba(255,255,255,0.6); max-width: 360px; }
        .footer-col h4 { color: var(--text-white); font-size: 1rem; margin-bottom: 16px; font-weight: 600; }
        .footer-col a { display: flex; align-items: center; color: rgba(255,255,255,0.55); font-size: 0.88rem; margin-bottom: 10px; transition: var(--transition); }
        .footer-col a:hover { color: var(--accent-light); padding-left: 4px; }
        .footer-bottom {
            display: flex; justify-content: space-between; align-items: center;
            padding: 20px 0; flex-wrap: wrap; gap: 12px;
            font-size: 0.82rem; color: rgba(255,255,255,0.4);
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: var(--accent-light); }

        /* ===== 404 / 空状态 ===== */
        .empty-state { text-align: center; padding: 60px 20px; }
        .empty-state i { font-size: 3rem; color: var(--text-light); margin-bottom: 16px; }
        .empty-state p { color: var(--text-muted); font-size: 1.1rem; }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .article-main .container { grid-template-columns: 1fr; }
            .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
            .footer .footer-top { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            :root { --header-h: 64px; }
            h1 { font-size: 1.8rem; }
            h2 { font-size: 1.4rem; }
            .nav { display: none; position: absolute; top: var(--header-h); left: 0; right: 0; background: rgba(255,255,255,0.98); flex-direction: column; padding: 16px 20px; border-bottom: 2px solid var(--border); box-shadow: var(--shadow-lg); gap: 4px; }
            .nav.open { display: flex; }
            .nav a { padding: 12px 16px; border-radius: var(--radius-sm); width: 100%; }
            .nav-toggle { display: flex; }
            .article-banner { min-height: 240px; }
            .article-banner h1 { font-size: 1.8rem; }
            .article-content { padding: 24px 20px; }
            .article-sidebar { grid-template-columns: 1fr; }
            .footer .footer-top { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }
        @media (max-width: 520px) {
            .article-banner h1 { font-size: 1.5rem; }
            .article-banner .meta { flex-direction: column; gap: 8px; }
            .article-content { padding: 16px; }
            .article-content .body-text { font-size: 0.98rem; }
            .sidebar-card { padding: 18px 16px; }
            .footer .footer-top { gap: 24px; }
        }

        /* ===== 实用工具 ===== */
        .sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
        .text-center { text-align: center; }
        .mt-2 { margin-top: 16px; }
        .mb-2 { margin-bottom: 16px; }

/* roulang page: category1 */
:root {
            --primary: #2a7d4f;
            --primary-dark: #1d5f3a;
            --primary-light: #e8f5ee;
            --primary-50: #f0faf4;
            --accent: #d4a84b;
            --accent-light: #f5e8c8;
            --bg: #ffffff;
            --bg-alt: #f6faf8;
            --bg-card: #ffffff;
            --text: #1e2a2e;
            --text-light: #5a6e72;
            --text-muted: #8a9ea2;
            --border: #dce8e2;
            --radius: 16px;
            --radius-sm: 8px;
            --radius-lg: 24px;
            --shadow: 0 4px 24px rgba(42, 125, 79, 0.08);
            --shadow-hover: 0 12px 40px rgba(42, 125, 79, 0.15);
            --shadow-card: 0 2px 16px rgba(0, 0, 0, 0.04);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --container: 1200px;
            --header-h: 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: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            padding-top: var(--header-h);
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        button {
            cursor: pointer;
            background: none;
        }
        ul {
            list-style: none;
        }

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

        /* ===== Header ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text);
            letter-spacing: -0.02em;
        }
        .logo i {
            color: var(--primary);
            font-size: 1.6rem;
            transition: var(--transition);
        }
        .logo:hover i {
            transform: scale(1.1) rotate(-5deg);
        }
        .logo span {
            color: var(--primary);
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo:hover {
            color: var(--text);
        }

        .nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-light);
            transition: var(--transition);
            position: relative;
        }
        .nav a i {
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .nav a:hover {
            color: var(--primary);
            background: var(--primary-50);
        }
        .nav a:hover i {
            color: var(--primary);
        }
        .nav a.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        .nav a.active i {
            color: var(--primary);
        }
        .nav a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 3px;
            border-radius: 4px;
            background: var(--primary);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .nav-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text);
            border-radius: 4px;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: var(--primary-50);
        }

        /* ===== Hero Banner ===== */
        .page-hero {
            position: relative;
            padding: 80px 0 72px;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, #3a9d6a 100%);
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--bg), transparent);
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-hero h1 {
            font-size: 3rem;
            font-weight: 900;
            color: #fff;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
        }
        .page-hero h1 i {
            margin-right: 12px;
            color: var(--accent);
        }
        .page-hero p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.88);
            max-width: 680px;
            margin: 0 auto;
            line-height: 1.8;
            font-weight: 400;
        }
        .page-hero .breadcrumb {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-top: 20px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
        }
        .page-hero .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
        }
        .page-hero .breadcrumb a:hover {
            color: #fff;
        }
        .page-hero .breadcrumb span {
            color: var(--accent);
        }

        /* ===== Section ===== */
        .section {
            padding: 72px 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text);
            letter-spacing: -0.02em;
            margin-bottom: 12px;
        }
        .section-title h2 i {
            color: var(--primary);
            margin-right: 10px;
        }
        .section-title p {
            font-size: 1.05rem;
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto;
        }
        .section-title .divider {
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 4px;
            margin: 16px auto 0;
        }

        /* ===== Cards Grid ===== */
        .card-grid {
            display: grid;
            gap: 28px;
            grid-template-columns: repeat(3, 1fr);
        }
        .card-grid.col-2 {
            grid-template-columns: repeat(2, 1fr);
        }
        .card-grid.col-4 {
            grid-template-columns: repeat(4, 1fr);
        }

        .card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: var(--transition);
            box-shadow: var(--shadow-card);
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }
        .card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
            transition: var(--transition);
        }
        .card:hover .card-img {
            transform: scale(1.02);
        }
        .card-body {
            padding: 24px 22px 26px;
        }
        .card-body .tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            margin-bottom: 10px;
            letter-spacing: 0.02em;
        }
        .card-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .card-body h3 a {
            color: inherit;
        }
        .card-body h3 a:hover {
            color: var(--primary);
        }
        .card-body p {
            font-size: 0.95rem;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 14px;
        }
        .card-body .meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.82rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border);
            padding-top: 14px;
            margin-top: 4px;
        }
        .card-body .meta i {
            margin-right: 4px;
        }

        /* ===== Featured Article ===== */
        .featured {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
        }
        .featured-image {
            width: 100%;
            height: 100%;
            min-height: 360px;
            object-fit: cover;
        }
        .featured-content {
            padding: 40px 44px 40px 0;
        }
        .featured-content .tag {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--accent);
            background: var(--accent-light);
            margin-bottom: 12px;
        }
        .featured-content h2 {
            font-size: 1.75rem;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 14px;
            line-height: 1.3;
        }
        .featured-content p {
            font-size: 1rem;
            color: var(--text-light);
            line-height: 1.8;
            margin-bottom: 20px;
        }

        /* ===== Data Stats ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 32px 20px;
            text-align: center;
            border: 1px solid var(--border);
            transition: var(--transition);
            box-shadow: var(--shadow-card);
        }
        .stat-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .stat-card .number {
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--primary);
            line-height: 1.1;
            letter-spacing: -0.02em;
        }
        .stat-card .number .unit {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--text-muted);
            margin-left: 2px;
        }
        .stat-card .label {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-light);
            margin-top: 8px;
        }
        .stat-card i {
            font-size: 2rem;
            color: var(--primary-light);
            margin-bottom: 12px;
            display: block;
        }

        /* ===== Timeline / Process ===== */
        .timeline {
            position: relative;
            padding: 20px 0;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 3px;
            background: linear-gradient(to bottom, var(--primary-light), var(--primary), var(--primary-light));
            transform: translateX(-50%);
            border-radius: 4px;
        }
        .timeline-item {
            display: flex;
            align-items: flex-start;
            margin-bottom: 40px;
            position: relative;
        }
        .timeline-item:nth-child(odd) {
            flex-direction: row-reverse;
        }
        .timeline-item .dot {
            position: absolute;
            left: 50%;
            top: 8px;
            transform: translateX(-50%);
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: var(--primary);
            border: 4px solid var(--bg);
            box-shadow: 0 0 0 3px var(--primary-light);
            z-index: 2;
        }
        .timeline-item .content {
            width: calc(50% - 40px);
            background: var(--bg-card);
            padding: 24px 28px;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }
        .timeline-item .content:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .timeline-item .content h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
        }
        .timeline-item .content .time {
            font-size: 0.82rem;
            color: var(--primary);
            font-weight: 600;
            margin-bottom: 6px;
        }
        .timeline-item .content p {
            font-size: 0.92rem;
            color: var(--text-light);
            line-height: 1.7;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            transition: var(--transition);
            gap: 16px;
        }
        .faq-question i {
            color: var(--primary);
            font-size: 1.1rem;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-question .arrow {
            color: var(--text-muted);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question {
            background: var(--primary-50);
        }
        .faq-item.active .faq-question .arrow {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.8;
        }
        .faq-item.active .faq-answer {
            max-height: 240px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            padding: 72px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .btn-primary {
            background: #fff;
            color: var(--primary-dark);
        }
        .btn-primary:hover {
            background: var(--accent-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.5);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .footer {
            background: #132b1e;
            color: rgba(255, 255, 255, 0.8);
            padding: 56px 0 0;
        }
        .footer .logo {
            color: #fff;
            margin-bottom: 16px;
        }
        .footer .logo span {
            background: linear-gradient(135deg, #5dbe8a, #8fd4aa);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .footer .logo i {
            color: #5dbe8a;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand p {
            font-size: 0.92rem;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.8;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }
        .footer-col a {
            display: block;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            padding: 5px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: #5dbe8a;
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
            flex-wrap: wrap;
            gap: 8px;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a:hover {
            color: #5dbe8a;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .card-grid.col-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .featured {
                grid-template-columns: 1fr;
            }
            .featured-content {
                padding: 32px 28px;
            }
            .featured-image {
                min-height: 260px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-top {
                grid-template-columns: 1fr 1fr;
            }
            .page-hero h1 {
                font-size: 2.4rem;
            }
            .timeline-item .content {
                width: calc(50% - 28px);
                padding: 20px;
            }
        }

        @media (max-width: 768px) {
            .nav {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 24px 24px;
                border-bottom: 1px solid var(--border);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                gap: 4px;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.06);
            }
            .nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav a {
                padding: 12px 16px;
                font-size: 1rem;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav a.active::after {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .page-hero {
                padding: 60px 0 56px;
                min-height: 240px;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .page-hero p {
                font-size: 0.95rem;
            }
            .section {
                padding: 48px 0;
            }
            .section-title h2 {
                font-size: 1.6rem;
            }
            .card-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .card-grid.col-2,
            .card-grid.col-4 {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-card {
                padding: 24px 16px;
            }
            .stat-card .number {
                font-size: 2.2rem;
            }
            .featured-content {
                padding: 24px 20px;
            }
            .featured-content h2 {
                font-size: 1.4rem;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .timeline::before {
                left: 20px;
            }
            .timeline-item,
            .timeline-item:nth-child(odd) {
                flex-direction: row;
                padding-left: 52px;
            }
            .timeline-item .dot {
                left: 20px;
            }
            .timeline-item .content {
                width: 100%;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .btn-group {
                flex-direction: column;
                align-items: center;
            }
            .btn {
                width: 100%;
                max-width: 280px;
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .page-hero h1 {
                font-size: 1.5rem;
            }
            .page-hero p {
                font-size: 0.88rem;
            }
            .section-title h2 {
                font-size: 1.4rem;
            }
            .stat-card .number {
                font-size: 1.8rem;
            }
            .stat-card {
                padding: 18px 12px;
            }
            .card-body {
                padding: 18px 16px 20px;
            }
            .featured-content {
                padding: 18px 16px;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 0.92rem;
            }
            .faq-answer {
                padding: 0 16px;
                font-size: 0.88rem;
            }
            .faq-item.active .faq-answer {
                padding: 0 16px 16px;
            }
            .footer-top {
                gap: 20px;
            }
        }