/* roulang page: index */
/* ===== Design Variables ===== */
:root {
  --primary: #1e40af;
  --primary-light: #3b82f6;
  --primary-dark: #1e3a8a;
  --primary-bg: #eff6ff;
  --secondary: #f59e0b;
  --secondary-light: #fbbf24;
  --accent: #10b981;
  --bg: #f8fafc;
  --bg-card: #ffffff;
  --bg-dark: #0f172a;
  --bg-section: #f1f5f9;
  --text: #1e293b;
  --text-light: #64748b;
  --text-white: #ffffff;
  --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(0,0,0,0.06);
  --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: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
  --container: 1200px;
  --header-height: 72px;
  --max-width: 1200px;
}

/* ===== 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);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background-color: var(--bg);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-light); }
ul, ol { list-style: none; }
button { cursor: pointer; font-family: inherit; font-size: inherit; border: none; background: none; }
input, textarea { font-family: inherit; font-size: inherit; outline: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.3; color: var(--text); font-weight: 700; }
h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
p { margin-bottom: 1rem; }
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}
.section { padding: 80px 0; }
.section-header {
  text-align: center;
  margin-bottom: 48px;
}
.section-header h2 {
  font-size: 2rem;
  margin-bottom: 12px;
  color: var(--text);
}
.section-header p {
  font-size: 1.1rem;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
}
.section-tag {
  display: inline-block;
  background: var(--primary-bg);
  color: var(--primary);
  padding: 4px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 12px;
}
.text-center { text-align: center; }
.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: 1fr 1fr 1fr 1fr; gap: 24px; }
img.cover { width: 100%; height: 200px; object-fit: cover; border-radius: var(--radius-lg) var(--radius-lg) 0 0; }
img.cover-sm { width: 100%; height: 160px; object-fit: cover; border-radius: var(--radius) var(--radius) 0 0; }
img.cover-lg { width: 100%; height: 280px; object-fit: cover; border-radius: var(--radius-lg); }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition);
  border: 2px solid transparent;
}
.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: var(--shadow-md); }
.btn-secondary {
  background: var(--secondary);
  color: #fff;
  border-color: var(--secondary);
}
.btn-secondary:hover { background: #d97706; border-color: #d97706; color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-white {
  background: #fff;
  color: var(--primary);
  border-color: #fff;
}
.btn-white:hover { background: var(--primary-bg); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-sm { padding: 8px 18px; font-size: 0.9rem; }
.btn-lg { padding: 16px 36px; font-size: 1.1rem; }
.badge {
  display: inline-block;
  padding: 2px 12px;
  border-radius: 12px;
  font-size: 0.78rem;
  font-weight: 600;
  background: var(--primary-bg);
  color: var(--primary);
}
.badge-hot { background: #fef3c7; color: #b45309; }
.badge-new { background: #d1fae5; color: #065f46; }
.badge-top { background: #fee2e2; color: #b91c1c; }

/* ===== Header & Navigation ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  height: var(--header-height);
  transition: var(--transition);
}
.header.scrolled { box-shadow: var(--shadow-lg); }
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}
.header-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.5px;
}
.header-logo i { font-size: 1.6rem; color: var(--secondary); }
.header-logo span { background: linear-gradient(135deg, var(--primary), var(--primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.header-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}
.header-nav a {
  padding: 8px 16px;
  border-radius: var(--radius);
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text);
  transition: var(--transition);
  position: relative;
}
.header-nav a:hover { color: var(--primary); background: var(--primary-bg); }
.header-nav a.active { color: var(--primary); background: var(--primary-bg); font-weight: 600; }
.header-nav a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 3px;
  background: var(--primary);
  border-radius: 2px;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.header-search {
  display: flex;
  align-items: center;
  background: var(--bg-section);
  border-radius: var(--radius);
  padding: 6px 12px;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.header-search:focus-within { border-color: var(--primary-light); box-shadow: 0 0 0 3px rgba(59,130,246,0.15); }
.header-search input {
  border: none;
  background: transparent;
  padding: 4px 8px;
  font-size: 0.9rem;
  width: 140px;
  color: var(--text);
}
.header-search input::placeholder { color: var(--text-light); }
.header-search button { color: var(--text-light); padding: 4px; font-size: 0.95rem; }
.header-search button:hover { color: var(--primary); }
.header-mobile-toggle { display: none; font-size: 1.5rem; color: var(--text); padding: 8px; }

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  margin-top: var(--header-height);
  background: linear-gradient(135deg, var(--bg-dark) 0%, #1a2a4a 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: 0.25;
  z-index: 0;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15,23,42,0.85) 0%, rgba(30,64,175,0.7) 100%);
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 60px 20px;
  width: 100%;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.12);
  backdrop-filter: blur(8px);
  padding: 8px 20px;
  border-radius: 24px;
  color: #fff;
  font-size: 0.9rem;
  margin-bottom: 24px;
  border: 1px solid rgba(255,255,255,0.15);
}
.hero-badge i { color: var(--secondary); }
.hero h1 {
  font-size: 3.2rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 20px;
  max-width: 700px;
}
.hero h1 span { color: var(--secondary); }
.hero p {
  font-size: 1.2rem;
  color: rgba(255,255,255,0.85);
  max-width: 560px;
  margin-bottom: 36px;
  line-height: 1.7;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
}
.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 50px;
  padding-top: 36px;
  border-top: 1px solid rgba(255,255,255,0.12);
}
.hero-stat-item h3 { font-size: 2rem; font-weight: 700; color: #fff; }
.hero-stat-item h3 i { color: var(--secondary); font-size: 1.4rem; margin-right: 6px; }
.hero-stat-item p { font-size: 0.95rem; color: rgba(255,255,255,0.6); margin-bottom: 0; }

/* ===== Notice Bar ===== */
.notice-bar {
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}
.notice-bar-inner {
  display: flex;
  align-items: center;
  gap: 16px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}
.notice-bar-label {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--secondary);
  color: #fff;
  padding: 4px 14px;
  border-radius: 4px;
  font-size: 0.82rem;
  font-weight: 600;
  white-space: nowrap;
}
.notice-bar-text {
  font-size: 0.92rem;
  color: var(--text-light);
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}
.notice-bar-text a { color: var(--text); font-weight: 500; }
.notice-bar-text a:hover { color: var(--primary); }

/* ===== Features / Core ===== */
.features { background: #fff; }
.feature-card {
  background: var(--bg);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  text-align: center;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--primary-light); }
.feature-icon {
  width: 64px;
  height: 64px;
  background: var(--primary-bg);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 1.6rem;
  color: var(--primary);
  transition: var(--transition);
}
.feature-card:hover .feature-icon { background: var(--primary); color: #fff; }
.feature-card h3 { font-size: 1.2rem; margin-bottom: 10px; }
.feature-card p { font-size: 0.95rem; color: var(--text-light); margin-bottom: 0; }

/* ===== Category Section ===== */
.category-section { background: var(--bg-section); }
.category-card {
  position: relative;
  background: #fff;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
  display: block;
  color: var(--text);
}
.category-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); color: var(--text); }
.category-card img { width: 100%; height: 180px; object-fit: cover; }
.category-card-body { padding: 20px 24px 24px; }
.category-card-body h3 { font-size: 1.2rem; margin-bottom: 6px; }
.category-card-body p { font-size: 0.92rem; color: var(--text-light); margin-bottom: 0; }
.category-card .badge { position: absolute; top: 16px; left: 16px; }

/* ===== News / Content List ===== */
.news-section { background: #fff; }
.news-card {
  display: flex;
  gap: 20px;
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 20px;
  border: 1px solid var(--border);
  transition: var(--transition);
  align-items: flex-start;
}
.news-card:hover { box-shadow: var(--shadow-md); border-color: var(--primary-light); transform: translateY(-2px); }
.news-card img { width: 180px; height: 130px; object-fit: cover; border-radius: var(--radius); flex-shrink: 0; }
.news-card-info { flex: 1; display: flex; flex-direction: column; gap: 6px; }
.news-card-info h3 { font-size: 1.1rem; margin-bottom: 4px; }
.news-card-info h3 a { color: var(--text); }
.news-card-info h3 a:hover { color: var(--primary); }
.news-card-info p { font-size: 0.92rem; color: var(--text-light); margin-bottom: 0; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-card-meta { display: flex; align-items: center; gap: 16px; font-size: 0.82rem; color: var(--text-light); margin-top: auto; }

/* ===== Stats / Data ===== */
.stats-section {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff;
  padding: 80px 0;
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; text-align: center; }
.stat-item h3 { font-size: 2.4rem; font-weight: 800; color: #fff; margin-bottom: 6px; }
.stat-item h3 i { color: var(--secondary); font-size: 1.6rem; margin-right: 6px; }
.stat-item p { font-size: 1rem; color: rgba(255,255,255,0.7); margin-bottom: 0; }

/* ===== How It Works / Process ===== */
.process { background: var(--bg-section); }
.process-step {
  text-align: center;
  padding: 32px 20px;
  position: relative;
}
.process-step-num {
  width: 56px;
  height: 56px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  font-weight: 700;
  margin: 0 auto 20px;
  position: relative;
  z-index: 2;
}
.process-step h3 { font-size: 1.15rem; margin-bottom: 8px; }
.process-step p { font-size: 0.92rem; color: var(--text-light); margin-bottom: 0; }
.process-arrow { display: none; }

/* ===== FAQ ===== */
.faq-section { background: #fff; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 12px;
  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-weight: 600;
  font-size: 1.05rem;
  color: var(--text);
  cursor: pointer;
  background: #fff;
  transition: var(--transition);
  gap: 16px;
}
.faq-question:hover { background: var(--primary-bg); }
.faq-question i { color: var(--primary); transition: var(--transition); font-size: 1.1rem; }
.faq-item.active .faq-question i { transform: rotate(180deg); }
.faq-answer {
  padding: 0 24px 18px;
  font-size: 0.95rem;
  color: var(--text-light);
  line-height: 1.7;
  display: none;
}
.faq-item.active .faq-answer { display: block; }

/* ===== CTA ===== */
.cta-section {
  background: linear-gradient(135deg, var(--bg-dark) 0%, #1a2a4a 100%);
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  opacity: 0.08;
}
.cta-content { position: relative; z-index: 1; }
.cta-content h2 { color: #fff; font-size: 2.2rem; margin-bottom: 16px; }
.cta-content p { color: rgba(255,255,255,0.7); max-width: 500px; margin: 0 auto 32px; font-size: 1.1rem; }

/* ===== Footer ===== */
.footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,0.7);
  padding: 60px 0 30px;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand h3 { color: #fff; font-size: 1.3rem; margin-bottom: 12px; display: flex; align-items: center; gap: 8px; }
.footer-brand h3 i { color: var(--secondary); }
.footer-brand p { font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.5); margin-bottom: 16px; }
.footer-social { display: flex; gap: 12px; }
.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.6);
  transition: var(--transition);
}
.footer-social a:hover { background: var(--primary); color: #fff; }
.footer h4 { color: #fff; font-size: 1rem; margin-bottom: 16px; }
.footer ul li { margin-bottom: 10px; }
.footer ul li a { color: rgba(255,255,255,0.5); font-size: 0.9rem; }
.footer ul li a:hover { color: var(--secondary); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.35);
}
.footer-bottom a { color: rgba(255,255,255,0.5); }

/* ===== Breadcrumb ===== */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--text-light);
  padding: 16px 0;
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--text-light); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb i { font-size: 0.7rem; color: var(--border); }
.breadcrumb .current { color: var(--text); font-weight: 500; }

/* ===== Page Header (inner pages) ===== */
.page-header {
  margin-top: var(--header-height);
  background: linear-gradient(135deg, var(--bg-dark), #1a2a4a);
  padding: 60px 0;
  position: relative;
  overflow: hidden;
}
.page-header-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-3.png');
  background-size: cover;
  background-position: center;
  opacity: 0.12;
}
.page-header-content { position: relative; z-index: 1; text-align: center; }
.page-header-content h1 { color: #fff; font-size: 2.2rem; margin-bottom: 12px; }
.page-header-content p { color: rgba(255,255,255,0.7); max-width: 500px; margin: 0 auto; font-size: 1.05rem; }

/* ===== Article Page ===== */
.article-main { padding: 40px 0 80px; background: #fff; }
.article-container { max-width: 800px; margin: 0 auto; padding: 0 20px; }
.article-header { margin-bottom: 32px; }
.article-header h1 { font-size: 2rem; margin-bottom: 16px; line-height: 1.3; }
.article-meta { display: flex; flex-wrap: wrap; gap: 16px; font-size: 0.9rem; color: var(--text-light); margin-bottom: 20px; }
.article-meta i { margin-right: 4px; }
.article-body { font-size: 1.05rem; line-height: 1.8; color: var(--text); }
.article-body p { margin-bottom: 1.2rem; }
.article-body img { border-radius: var(--radius-lg); margin: 24px 0; width: 100%; }
.article-body h2, .article-body h3 { margin-top: 32px; margin-bottom: 16px; }
.article-body ul, .article-body ol { padding-left: 24px; margin-bottom: 1.2rem; }
.article-body li { margin-bottom: 8px; list-style: disc; }
.article-body blockquote {
  border-left: 4px solid var(--primary);
  padding: 16px 20px;
  background: var(--primary-bg);
  border-radius: 0 var(--radius) var(--radius) 0;
  margin: 24px 0;
  font-style: italic;
  color: var(--text-light);
}
.article-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.article-nav a { display: flex; align-items: center; gap: 8px; font-weight: 500; }

/* ===== Category Page ===== */
.category-main { padding: 60px 0; background: var(--bg); }
.category-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 28px; }
.category-item {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.category-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.category-item img { width: 100%; height: 180px; object-fit: cover; }
.category-item-body { padding: 20px 24px 24px; }
.category-item-body h3 { font-size: 1.1rem; margin-bottom: 8px; }
.category-item-body h3 a { color: var(--text); }
.category-item-body h3 a:hover { color: var(--primary); }
.category-item-body p { font-size: 0.9rem; color: var(--text-light); margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.category-item-meta { display: flex; align-items: center; gap: 12px; font-size: 0.82rem; color: var(--text-light); }

/* ===== Empty State ===== */
.empty-state { text-align: center; padding: 60px 20px; color: var(--text-light); }
.empty-state i { font-size: 3rem; color: var(--border); margin-bottom: 16px; display: block; }
.empty-state p { font-size: 1.1rem; }

/* ===== Mobile Menu ===== */
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  background: rgba(255,255,255,0.98);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 20px;
  box-shadow: var(--shadow-lg);
  z-index: 999;
}
.mobile-menu.open { display: block; }
.mobile-menu a {
  display: block;
  padding: 12px 16px;
  border-radius: var(--radius);
  font-weight: 500;
  color: var(--text);
  font-size: 1rem;
}
.mobile-menu a:hover { background: var(--primary-bg); color: var(--primary); }
.mobile-menu a.active { background: var(--primary-bg); color: var(--primary); font-weight: 600; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 2.6rem; }
  .category-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 900px) {
  .header-nav, .header-search { display: none; }
  .header-mobile-toggle { display: block; }
  .hero h1 { font-size: 2.2rem; }
  .hero p { font-size: 1.05rem; }
  .hero-stats { flex-wrap: wrap; gap: 24px; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .news-card { flex-direction: column; }
  .news-card img { width: 100%; height: 180px; }
  .section { padding: 60px 0; }
  .article-container { max-width: 100%; }
}
@media (max-width: 768px) {
  .hero { min-height: 60vh; }
  .hero h1 { font-size: 1.8rem; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .hero-stat-item h3 { font-size: 1.5rem; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .category-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
  .stat-item h3 { font-size: 1.8rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .section-header h2 { font-size: 1.6rem; }
  .cta-content h2 { font-size: 1.6rem; }
  .page-header-content h1 { font-size: 1.6rem; }
  .article-header h1 { font-size: 1.5rem; }
  .article-meta { flex-wrap: wrap; gap: 10px; }
  .breadcrumb { font-size: 0.82rem; }
  .notice-bar-inner { flex-wrap: wrap; }
  .header-logo { font-size: 1.1rem; }
  .header-logo i { font-size: 1.3rem; }
}
@media (max-width: 520px) {
  .hero { min-height: 50vh; }
  .hero h1 { font-size: 1.5rem; }
  .hero p { font-size: 0.95rem; }
  .hero-stats { flex-direction: column; gap: 16px; }
  .hero-stat-item h3 { font-size: 1.3rem; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
  .stat-item h3 { font-size: 1.5rem; }
  .section { padding: 40px 0; }
  .section-header { margin-bottom: 32px; }
  .news-card { padding: 16px; }
  .news-card img { height: 140px; }
  .feature-card { padding: 24px 20px; }
  .btn { padding: 10px 20px; font-size: 0.9rem; }
  .btn-lg { padding: 14px 28px; font-size: 1rem; }
  .footer { padding: 40px 0 20px; }
  .page-header { padding: 40px 0; }
  .category-item-body { padding: 16px 18px 20px; }
}

/* roulang page: category1 */
:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #3b82f6;
  --secondary: #0f172a;
  --accent: #f59e0b;
  --accent-light: #fbbf24;
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --bg-dark: #0f172a;
  --text: #1e293b;
  --text-light: #64748b;
  --text-white: #ffffff;
  --border: #e2e8f0;
  --border-light: #f1f5f9;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(0,0,0,0.06);
  --shadow-lg: 0 12px 48px rgba(0,0,0,0.1);
  --shadow-hover: 0 8px 32px rgba(37,99,235,0.15);
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --max-width: 1200px;
  --header-height: 72px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; transition: var(--transition); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}
@media (max-width: 640px) {
  .container { padding: 0 16px; }
}

/* ===== Header / Nav ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.header-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--secondary);
  flex-shrink: 0;
}
.header-logo i { color: var(--primary); font-size: 1.5rem; }
.header-logo span { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.header-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}
.header-nav a {
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-light);
  transition: var(--transition);
  position: relative;
}
.header-nav a:hover { color: var(--primary); background: rgba(37,99,235,0.06); }
.header-nav a.active {
  color: var(--primary);
  background: rgba(37,99,235,0.1);
  font-weight: 600;
}
.header-nav a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 3px;
  border-radius: 2px;
  background: var(--primary);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.header-search {
  position: relative;
  width: 220px;
}
.header-search input {
  width: 100%;
  padding: 8px 16px 8px 38px;
  border: 1px solid var(--border);
  border-radius: 50px;
  background: var(--bg-alt);
  font-size: 0.9rem;
  color: var(--text);
  outline: none;
  transition: var(--transition);
}
.header-search input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,0.1); }
.header-search i {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-light);
  font-size: 0.9rem;
}
.header-btn {
  padding: 8px 22px;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  background: var(--primary);
  color: #fff;
}
.header-btn:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(37,99,235,0.3); }
.mobile-toggle { display: none; background: none; border: none; font-size: 1.5rem; color: var(--text); cursor: pointer; padding: 4px; }
@media (max-width: 768px) {
  .header-nav { display: none; }
  .header-nav.open { display: flex; flex-direction: column; position: absolute; top: var(--header-height); left: 0; right: 0; background: rgba(255,255,255,0.98); backdrop-filter: blur(12px); padding: 16px 24px; border-bottom: 1px solid var(--border); gap: 4px; }
  .header-search { width: 140px; }
  .header-btn { padding: 6px 16px; font-size: 0.85rem; }
  .mobile-toggle { display: block; }
}
@media (max-width: 520px) {
  .header-search { width: 100px; }
  .header-search input { padding: 6px 12px 6px 32px; font-size: 0.8rem; }
  .header-search i { left: 10px; font-size: 0.8rem; }
  .header-logo { font-size: 1.1rem; }
  .header-logo i { font-size: 1.2rem; }
}

/* ===== Page Hero ===== */
.page-hero {
  padding: 120px 0 60px;
  background: linear-gradient(135deg, var(--bg-alt) 0%, #eef2ff 100%);
  position: relative;
  overflow: hidden;
  min-height: 320px;
  display: flex;
  align-items: center;
}
.page-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(37,99,235,0.06) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.page-hero .container { position: relative; z-index: 1; }
.page-hero h1 {
  font-size: 2.6rem;
  font-weight: 800;
  color: var(--secondary);
  line-height: 1.2;
  margin-bottom: 16px;
}
.page-hero h1 i { color: var(--primary); margin-right: 12px; }
.page-hero p {
  font-size: 1.15rem;
  color: var(--text-light);
  max-width: 680px;
  line-height: 1.7;
}
.page-hero .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--text-light);
  margin-bottom: 20px;
}
.page-hero .breadcrumb a { color: var(--primary); }
.page-hero .breadcrumb a:hover { text-decoration: underline; }
.page-hero .breadcrumb i { font-size: 0.75rem; color: var(--text-light); }
@media (max-width: 768px) {
  .page-hero { padding: 100px 0 40px; min-height: 240px; }
  .page-hero h1 { font-size: 2rem; }
  .page-hero p { font-size: 1rem; }
}
@media (max-width: 520px) {
  .page-hero h1 { font-size: 1.6rem; }
  .page-hero p { font-size: 0.9rem; }
}

/* ===== Section ===== */
.section { padding: 70px 0; }
.section-alt { background: var(--bg-alt); }
.section-title {
  text-align: center;
  margin-bottom: 48px;
}
.section-title h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--secondary);
  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 .tag {
  display: inline-block;
  padding: 4px 16px;
  border-radius: 50px;
  background: rgba(37,99,235,0.08);
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 12px;
}
@media (max-width: 640px) {
  .section { padding: 48px 0; }
  .section-title h2 { font-size: 1.6rem; }
  .section-title p { font-size: 0.95rem; }
}

/* ===== Grid / Cards ===== */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.card {
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: var(--transition);
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: rgba(37,99,235,0.2); }
.card-img { width: 100%; height: 200px; object-fit: cover; background: var(--bg-alt); }
.card-body { padding: 24px; }
.card-body h3 { font-size: 1.15rem; font-weight: 600; margin-bottom: 8px; color: var(--secondary); }
.card-body p { font-size: 0.95rem; color: var(--text-light); line-height: 1.6; margin-bottom: 12px; }
.card-body .tag {
  display: inline-block;
  padding: 2px 12px;
  border-radius: 50px;
  background: rgba(37,99,235,0.06);
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 500;
  margin-right: 6px;
  margin-bottom: 6px;
}
.card-body .meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.85rem;
  color: var(--text-light);
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border-light);
}
.card-body .meta i { font-size: 0.8rem; }
.card-link { display: inline-flex; align-items: center; gap: 6px; color: var(--primary); font-weight: 500; font-size: 0.9rem; }
.card-link:hover { gap: 10px; }
@media (max-width: 768px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .grid-2 { grid-template-columns: 1fr; gap: 20px; }
}
@media (max-width: 520px) {
  .grid-3 { grid-template-columns: 1fr; gap: 16px; }
  .card-img { height: 180px; }
  .card-body { padding: 18px; }
}

/* ===== Step / Timeline ===== */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  counter-reset: step;
}
.step-item {
  text-align: center;
  padding: 32px 20px;
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: var(--transition);
  position: relative;
}
.step-item:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.step-item::before {
  counter-increment: step;
  content: "0" counter(step);
  position: absolute;
  top: 16px;
  right: 20px;
  font-size: 2.8rem;
  font-weight: 800;
  color: rgba(37,99,235,0.06);
  line-height: 1;
  pointer-events: none;
}
.step-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(37,99,235,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 1.6rem;
  color: var(--primary);
  transition: var(--transition);
}
.step-item:hover .step-icon { background: var(--primary); color: #fff; }
.step-item h4 { font-size: 1.1rem; font-weight: 600; margin-bottom: 8px; color: var(--secondary); }
.step-item p { font-size: 0.9rem; color: var(--text-light); line-height: 1.6; }
@media (max-width: 768px) {
  .steps { grid-template-columns: repeat(2, 1fr); gap: 20px; }
}
@media (max-width: 520px) {
  .steps { grid-template-columns: 1fr; gap: 16px; }
  .step-item { padding: 24px 16px; }
}

/* ===== FAQ ===== */
.faq-list { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: rgba(37,99,235,0.2); }
.faq-question {
  padding: 18px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-weight: 500;
  color: var(--secondary);
  font-size: 1rem;
  transition: var(--transition);
  background: none;
  border: none;
  width: 100%;
  text-align: left;
}
.faq-question i { color: var(--primary); transition: var(--transition); font-size: 0.9rem; }
.faq-question.open i { transform: rotate(180deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
  padding: 0 24px;
  color: var(--text-light);
  font-size: 0.95rem;
  line-height: 1.7;
}
.faq-answer.open { max-height: 300px; padding: 0 24px 20px; }
.faq-answer p { margin-bottom: 8px; }
.faq-answer a { color: var(--primary); text-decoration: underline; }
@media (max-width: 520px) {
  .faq-question { padding: 14px 16px; font-size: 0.95rem; }
  .faq-answer.open { padding: 0 16px 16px; }
}

/* ===== CTA ===== */
.cta {
  padding: 70px 0;
  background: linear-gradient(135deg, var(--secondary) 0%, #1e293b 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('/assets/images/backpic/back-2.png') center/cover;
  opacity: 0.06;
  pointer-events: none;
}
.cta .container { position: relative; z-index: 1; }
.cta h2 {
  font-size: 2.2rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}
.cta p {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.7);
  max-width: 600px;
  margin: 0 auto 32px;
}
.cta .btn-group { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
.cta .btn-primary {
  padding: 14px 36px;
  border-radius: 50px;
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.cta .btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 32px rgba(37,99,235,0.4); }
.cta .btn-outline {
  padding: 14px 36px;
  border-radius: 50px;
  background: transparent;
  color: #fff;
  font-weight: 600;
  font-size: 1rem;
  border: 2px solid rgba(255,255,255,0.25);
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.cta .btn-outline:hover { border-color: #fff; background: rgba(255,255,255,0.08); transform: translateY(-2px); }
@media (max-width: 640px) {
  .cta { padding: 48px 0; }
  .cta h2 { font-size: 1.6rem; }
  .cta p { font-size: 0.95rem; }
  .cta .btn-primary, .cta .btn-outline { padding: 12px 28px; font-size: 0.9rem; }
}

/* ===== Footer ===== */
.footer {
  background: var(--secondary);
  color: rgba(255,255,255,0.8);
  padding: 56px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-brand h3 i { color: var(--primary-light); }
.footer-brand p { font-size: 0.92rem; line-height: 1.7; margin-bottom: 20px; color: rgba(255,255,255,0.6); }
.footer-social { display: flex; gap: 12px; }
.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.6);
  font-size: 1.1rem;
  transition: var(--transition);
}
.footer-social a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
.footer h4 {
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}
.footer ul li { margin-bottom: 10px; }
.footer ul li a {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.6);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.footer ul li a:hover { color: #fff; padding-left: 4px; }
.footer-bottom {
  padding: 20px 0;
  text-align: center;
  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: #fff; }
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 520px) {
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer { padding: 40px 0 0; }
}

/* ===== Tag Badge ===== */
.tag-badge {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 500;
  background: rgba(37,99,235,0.08);
  color: var(--primary);
}
.tag-badge.amber { background: rgba(245,158,11,0.1); color: #b45309; }
.tag-badge.green { background: rgba(16,185,129,0.1); color: #047857; }
.tag-badge.purple { background: rgba(139,92,246,0.1); color: #7c3aed; }

/* ===== Info Banner ===== */
.info-banner {
  padding: 32px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, #eef2ff, #f8fafc);
  border: 1px solid rgba(37,99,235,0.12);
  display: flex;
  align-items: center;
  gap: 24px;
  margin-bottom: 32px;
}
.info-banner-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.4rem;
  flex-shrink: 0;
}
.info-banner-content h4 { font-size: 1.1rem; font-weight: 600; color: var(--secondary); margin-bottom: 6px; }
.info-banner-content p { font-size: 0.95rem; color: var(--text-light); line-height: 1.6; }
.info-banner-content a { color: var(--primary); font-weight: 500; text-decoration: underline; }
@media (max-width: 520px) {
  .info-banner { flex-direction: column; text-align: center; padding: 24px; }
}

/* ===== Extra Utilities ===== */
.text-center { text-align: center; }
.mt-12 { margin-top: 12px; }
.mt-24 { margin-top: 24px; }
.mb-12 { margin-bottom: 12px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }

/* ===== Table ===== */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}
table th {
  background: var(--bg-alt);
  font-weight: 600;
  color: var(--secondary);
  padding: 14px 18px;
  text-align: left;
  border-bottom: 2px solid var(--border);
}
table td {
  padding: 12px 18px;
  border-bottom: 1px solid var(--border-light);
  color: var(--text);
}
table tr:last-child td { border-bottom: none; }
table tr:hover td { background: rgba(37,99,235,0.02); }
table .badge { font-size: 0.8rem; padding: 2px 12px; border-radius: 50px; display: inline-block; }
.badge-green { background: rgba(16,185,129,0.1); color: #047857; }
.badge-amber { background: rgba(245,158,11,0.1); color: #b45309; }
.badge-blue { background: rgba(37,99,235,0.1); color: var(--primary); }
@media (max-width: 520px) {
  table { font-size: 0.85rem; }
  table th, table td { padding: 10px 12px; }
}

/* ===== Alert ===== */
.alert {
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 20px;
}
.alert i { font-size: 1.2rem; flex-shrink: 0; margin-top: 2px; }
.alert-info { background: rgba(37,99,235,0.06); border: 1px solid rgba(37,99,235,0.15); }
.alert-info i { color: var(--primary); }
.alert-warning { background: rgba(245,158,11,0.06); border: 1px solid rgba(245,158,11,0.2); }
.alert-warning i { color: var(--accent); }
.alert p { font-size: 0.95rem; color: var(--text); line-height: 1.6; }

/* roulang page: article */
/* ===== 设计变量 ===== */
    :root {
        --primary: #1a3a5c;
        --primary-light: #2a5a8c;
        --primary-dark: #0f2440;
        --accent: #e8a838;
        --accent-light: #f0c060;
        --accent-dark: #c88a20;
        --bg-body: #f7f9fc;
        --bg-white: #ffffff;
        --bg-light: #eef2f7;
        --bg-dark: #0f2440;
        --text-primary: #1a2a3a;
        --text-secondary: #4a5a6a;
        --text-muted: #8a9aaa;
        --text-light: #f0f4f8;
        --border-color: #dfe5ed;
        --radius-sm: 6px;
        --radius-md: 12px;
        --radius-lg: 20px;
        --radius-xl: 28px;
        --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
        --shadow-md: 0 6px 24px rgba(0,0,0,0.08);
        --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
        --shadow-xl: 0 24px 60px rgba(0,0,0,0.15);
        --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
        --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        --max-width: 1200px;
        --header-height: 72px;
    }

    /* ===== Reset ===== */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; font-size: 16px; }
    body {
        font-family: var(--font-sans);
        color: var(--text-primary);
        background: var(--bg-body);
        line-height: 1.7;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
    a { color: var(--primary-light); text-decoration: none; transition: color var(--transition); }
    a:hover { color: var(--accent); }
    img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
    ul, ol { list-style: none; }
    button, input, textarea { font-family: inherit; font-size: 1rem; outline: none; border: none; }
    button { cursor: pointer; }
    h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-primary); }
    h1 { font-size: 2.4rem; }
    h2 { font-size: 2rem; }
    h3 { font-size: 1.5rem; }
    h4 { font-size: 1.2rem; }
    p { margin-bottom: 1rem; }

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

    /* ===== Header / Nav ===== */
    .header {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: var(--header-height);
        background: rgba(255,255,255,0.95);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--border-color);
        z-index: 1000;
        box-shadow: var(--shadow-sm);
    }
    .header .container {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 100%;
    }
    .header-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 1.35rem;
        font-weight: 800;
        color: var(--primary);
    }
    .header-logo i {
        color: var(--accent);
        font-size: 1.6rem;
    }
    .header-logo:hover { color: var(--primary); }
    .header-nav {
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .header-nav a {
        padding: 8px 18px;
        border-radius: var(--radius-sm);
        font-size: 0.95rem;
        font-weight: 500;
        color: var(--text-secondary);
        transition: all var(--transition);
        position: relative;
    }
    .header-nav a:hover {
        color: var(--primary);
        background: var(--bg-light);
    }
    .header-nav a.active {
        color: var(--primary);
        background: var(--bg-light);
        font-weight: 600;
    }
    .header-nav a.active::after {
        content: '';
        position: absolute;
        bottom: 2px;
        left: 50%;
        transform: translateX(-50%);
        width: 20px;
        height: 3px;
        background: var(--accent);
        border-radius: 2px;
    }
    .header-actions {
        display: flex;
        align-items: center;
        gap: 12px;
    }
    .header-actions .search-box {
        display: flex;
        align-items: center;
        background: var(--bg-light);
        border-radius: var(--radius-sm);
        padding: 6px 14px;
        gap: 8px;
        border: 1px solid transparent;
        transition: all var(--transition);
    }
    .header-actions .search-box:focus-within {
        border-color: var(--accent);
        background: var(--bg-white);
        box-shadow: 0 0 0 3px rgba(232,168,56,0.15);
    }
    .header-actions .search-box i {
        color: var(--text-muted);
        font-size: 0.9rem;
    }
    .header-actions .search-box input {
        background: transparent;
        border: none;
        padding: 4px 0;
        width: 140px;
        color: var(--text-primary);
        font-size: 0.9rem;
    }
    .header-actions .search-box input::placeholder { color: var(--text-muted); }
    .header-actions .btn-cta {
        background: var(--accent);
        color: var(--primary-dark);
        padding: 8px 22px;
        border-radius: var(--radius-sm);
        font-weight: 700;
        font-size: 0.9rem;
        transition: all var(--transition);
        box-shadow: var(--shadow-sm);
    }
    .header-actions .btn-cta:hover {
        background: var(--accent-light);
        transform: translateY(-2px);
        box-shadow: var(--shadow-md);
    }
    .header-actions .btn-icon {
        background: var(--bg-light);
        width: 38px;
        height: 38px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--text-secondary);
        font-size: 1rem;
        transition: all var(--transition);
    }
    .header-actions .btn-icon:hover {
        background: var(--accent);
        color: var(--primary-dark);
    }
    .mobile-menu-btn {
        display: none;
        background: none;
        font-size: 1.5rem;
        color: var(--primary);
        padding: 4px 8px;
    }

    /* ===== Banner ===== */
    .article-banner {
        margin-top: var(--header-height);
        padding: 80px 0 60px;
        background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
        position: relative;
        overflow: hidden;
        min-height: 320px;
        display: flex;
        align-items: center;
    }
    .article-banner::before {
        content: '';
        position: absolute;
        inset: 0;
        background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
        opacity: 0.15;
        mix-blend-mode: overlay;
    }
    .article-banner::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        height: 80px;
        background: linear-gradient(to top, var(--bg-body), transparent);
    }
    .article-banner .container {
        position: relative;
        z-index: 2;
        text-align: center;
    }
    .article-banner .post-category {
        display: inline-block;
        background: var(--accent);
        color: var(--primary-dark);
        padding: 4px 16px;
        border-radius: 20px;
        font-size: 0.85rem;
        font-weight: 700;
        margin-bottom: 16px;
        letter-spacing: 0.5px;
    }
    .article-banner h1 {
        color: var(--text-light);
        font-size: 2.6rem;
        max-width: 900px;
        margin: 0 auto 16px;
        text-shadow: 0 2px 12px rgba(0,0,0,0.2);
        line-height: 1.35;
    }
    .article-banner .post-meta {
        display: flex;
        justify-content: center;
        align-items: center;
        gap: 24px;
        color: rgba(255,255,255,0.75);
        font-size: 0.95rem;
    }
    .article-banner .post-meta i {
        margin-right: 6px;
        color: var(--accent);
    }

    /* ===== 文章正文 ===== */
    .article-main {
        padding: 40px 0 60px;
    }
    .article-main .container {
        display: grid;
        grid-template-columns: 1fr 300px;
        gap: 40px;
    }
    .article-body {
        background: var(--bg-white);
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-sm);
        padding: 40px 44px;
    }
    .article-body .article-content {
        font-size: 1.05rem;
        line-height: 1.9;
        color: var(--text-primary);
    }
    .article-body .article-content p {
        margin-bottom: 1.3rem;
    }
    .article-body .article-content h2,
    .article-body .article-content h3,
    .article-body .article-content h4 {
        margin-top: 2rem;
        margin-bottom: 0.8rem;
        color: var(--primary);
    }
    .article-body .article-content ul,
    .article-body .article-content ol {
        list-style: disc;
        padding-left: 1.8rem;
        margin-bottom: 1.3rem;
    }
    .article-body .article-content li {
        margin-bottom: 0.4rem;
    }
    .article-body .article-content img {
        margin: 1.5rem auto;
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-sm);
    }
    .article-body .article-content blockquote {
        border-left: 4px solid var(--accent);
        background: var(--bg-light);
        padding: 16px 24px;
        margin: 1.5rem 0;
        border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        color: var(--text-secondary);
        font-style: italic;
    }
    .article-body .article-content a {
        color: var(--accent-dark);
        text-decoration: underline;
    }
    .article-body .article-content a:hover {
        color: var(--accent);
    }
    .article-body .article-tags {
        margin-top: 32px;
        padding-top: 24px;
        border-top: 1px solid var(--border-color);
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
    }
    .article-body .article-tags .tag {
        background: var(--bg-light);
        padding: 6px 16px;
        border-radius: 20px;
        font-size: 0.85rem;
        color: var(--text-secondary);
        transition: all var(--transition);
    }
    .article-body .article-tags .tag:hover {
        background: var(--accent);
        color: var(--primary-dark);
    }
    .article-body .article-share {
        display: flex;
        align-items: center;
        gap: 12px;
        margin-top: 20px;
        padding-top: 20px;
        border-top: 1px solid var(--border-color);
    }
    .article-body .article-share span {
        font-size: 0.9rem;
        color: var(--text-muted);
        font-weight: 500;
    }
    .article-body .article-share a {
        width: 38px;
        height: 38px;
        border-radius: 50%;
        background: var(--bg-light);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--text-secondary);
        transition: all var(--transition);
        font-size: 1rem;
    }
    .article-body .article-share a:hover {
        background: var(--accent);
        color: var(--primary-dark);
        transform: translateY(-3px);
    }

    /* ===== 侧边栏 ===== */
    .article-sidebar {
        display: flex;
        flex-direction: column;
        gap: 28px;
    }
    .sidebar-widget {
        background: var(--bg-white);
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-sm);
        padding: 28px 24px;
    }
    .sidebar-widget h3 {
        font-size: 1.1rem;
        margin-bottom: 16px;
        padding-bottom: 12px;
        border-bottom: 2px solid var(--accent);
        display: flex;
        align-items: center;
        gap: 8px;
        color: var(--primary);
    }
    .sidebar-widget h3 i {
        color: var(--accent);
    }
    .sidebar-widget ul li {
        padding: 10px 0;
        border-bottom: 1px solid var(--border-color);
    }
    .sidebar-widget ul li:last-child { border-bottom: none; }
    .sidebar-widget ul li a {
        display: flex;
        align-items: center;
        gap: 10px;
        color: var(--text-secondary);
        font-size: 0.95rem;
        transition: all var(--transition);
    }
    .sidebar-widget ul li a:hover {
        color: var(--accent-dark);
        padding-left: 4px;
    }
    .sidebar-widget ul li a i {
        color: var(--accent);
        font-size: 0.8rem;
    }
    .sidebar-widget .cta-sidebar {
        margin-top: 8px;
    }
    .sidebar-widget .cta-sidebar .btn-block {
        display: block;
        width: 100%;
        text-align: center;
        background: var(--accent);
        color: var(--primary-dark);
        padding: 12px 20px;
        border-radius: var(--radius-sm);
        font-weight: 700;
        font-size: 0.95rem;
        transition: all var(--transition);
    }
    .sidebar-widget .cta-sidebar .btn-block:hover {
        background: var(--accent-light);
        transform: translateY(-2px);
        box-shadow: var(--shadow-md);
    }

    /* ===== 推荐文章（文章未找到） ===== */
    .article-not-found {
        text-align: center;
        padding: 60px 20px;
    }
    .article-not-found i {
        font-size: 3rem;
        color: var(--text-muted);
        margin-bottom: 20px;
    }
    .article-not-found h2 {
        font-size: 1.8rem;
        color: var(--primary);
        margin-bottom: 12px;
    }
    .article-not-found p {
        color: var(--text-secondary);
        margin-bottom: 24px;
    }
    .article-not-found .btn-back {
        display: inline-block;
        background: var(--accent);
        color: var(--primary-dark);
        padding: 12px 32px;
        border-radius: var(--radius-sm);
        font-weight: 700;
        transition: all var(--transition);
    }
    .article-not-found .btn-back:hover {
        background: var(--accent-light);
        transform: translateY(-2px);
        box-shadow: var(--shadow-md);
    }

    /* ===== 相关推荐 ===== */
    .related-section {
        padding: 60px 0;
        background: var(--bg-light);
    }
    .related-section .section-header {
        text-align: center;
        margin-bottom: 40px;
    }
    .related-section .section-header h2 {
        font-size: 1.8rem;
        color: var(--primary);
        position: relative;
        display: inline-block;
    }
    .related-section .section-header h2::after {
        content: '';
        display: block;
        width: 60px;
        height: 4px;
        background: var(--accent);
        border-radius: 2px;
        margin: 12px auto 0;
    }
    .related-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
    }
    .related-card {
        background: var(--bg-white);
        border-radius: var(--radius-md);
        overflow: hidden;
        box-shadow: var(--shadow-sm);
        transition: all var(--transition);
    }
    .related-card:hover {
        transform: translateY(-6px);
        box-shadow: var(--shadow-lg);
    }
    .related-card .card-img {
        height: 180px;
        overflow: hidden;
        position: relative;
    }
    .related-card .card-img img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.5s ease;
    }
    .related-card:hover .card-img img {
        transform: scale(1.08);
    }
    .related-card .card-img .card-cat {
        position: absolute;
        top: 12px;
        left: 12px;
        background: var(--accent);
        color: var(--primary-dark);
        padding: 2px 12px;
        border-radius: 12px;
        font-size: 0.75rem;
        font-weight: 700;
    }
    .related-card .card-body {
        padding: 18px 20px 20px;
    }
    .related-card .card-body h4 {
        font-size: 1rem;
        margin-bottom: 8px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .related-card .card-body h4 a {
        color: var(--text-primary);
    }
    .related-card .card-body h4 a:hover {
        color: var(--accent-dark);
    }
    .related-card .card-body .card-meta {
        display: flex;
        align-items: center;
        gap: 12px;
        font-size: 0.8rem;
        color: var(--text-muted);
    }
    .related-card .card-body .card-meta i {
        margin-right: 4px;
    }

    /* ===== CTA ===== */
    .cta-section {
        padding: 70px 0;
        background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
        position: relative;
        overflow: hidden;
    }
    .cta-section::before {
        content: '';
        position: absolute;
        inset: 0;
        background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
        opacity: 0.08;
        mix-blend-mode: overlay;
    }
    .cta-section .container {
        position: relative;
        z-index: 2;
        text-align: center;
    }
    .cta-section h2 {
        color: var(--text-light);
        font-size: 2rem;
        margin-bottom: 12px;
    }
    .cta-section p {
        color: rgba(255,255,255,0.8);
        font-size: 1.1rem;
        max-width: 600px;
        margin: 0 auto 28px;
    }
    .cta-section .btn-cta-large {
        display: inline-block;
        background: var(--accent);
        color: var(--primary-dark);
        padding: 16px 48px;
        border-radius: var(--radius-sm);
        font-size: 1.1rem;
        font-weight: 800;
        transition: all var(--transition);
        box-shadow: 0 8px 30px rgba(232,168,56,0.35);
    }
    .cta-section .btn-cta-large:hover {
        background: var(--accent-light);
        transform: translateY(-4px);
        box-shadow: 0 12px 40px rgba(232,168,56,0.5);
    }

    /* ===== Footer ===== */
    .footer {
        background: var(--bg-dark);
        color: rgba(255,255,255,0.8);
        padding: 60px 0 30px;
    }
    .footer .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: 40px;
        margin-bottom: 40px;
    }
    .footer .footer-brand h3 {
        color: var(--text-light);
        font-size: 1.4rem;
        margin-bottom: 12px;
        display: flex;
        align-items: center;
        gap: 10px;
    }
    .footer .footer-brand h3 i {
        color: var(--accent);
    }
    .footer .footer-brand p {
        color: rgba(255,255,255,0.6);
        font-size: 0.95rem;
        line-height: 1.7;
    }
    .footer .footer-social {
        display: flex;
        gap: 14px;
        margin-top: 18px;
    }
    .footer .footer-social a {
        width: 40px;
        height: 40px;
        border-radius: 50%;
        background: rgba(255,255,255,0.08);
        display: flex;
        align-items: center;
        justify-content: center;
        color: rgba(255,255,255,0.7);
        font-size: 1.1rem;
        transition: all var(--transition);
    }
    .footer .footer-social a:hover {
        background: var(--accent);
        color: var(--primary-dark);
        transform: translateY(-3px);
    }
    .footer h4 {
        color: var(--text-light);
        font-size: 1rem;
        margin-bottom: 18px;
        position: relative;
        padding-bottom: 10px;
    }
    .footer h4::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 30px;
        height: 3px;
        background: var(--accent);
        border-radius: 2px;
    }
    .footer ul li {
        margin-bottom: 10px;
    }
    .footer ul li a {
        color: rgba(255,255,255,0.6);
        font-size: 0.9rem;
        transition: all var(--transition);
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .footer ul li a:hover {
        color: var(--accent);
        padding-left: 4px;
    }
    .footer ul li a i {
        font-size: 0.8rem;
        color: var(--accent);
    }
    .footer .footer-bottom {
        border-top: 1px solid rgba(255,255,255,0.08);
        padding-top: 24px;
        text-align: center;
    }
    .footer .footer-bottom p {
        color: rgba(255,255,255,0.4);
        font-size: 0.85rem;
        margin-bottom: 0;
    }
    .footer .footer-bottom a {
        color: var(--accent);
    }
    .footer .footer-bottom a:hover {
        text-decoration: underline;
    }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
        .article-main .container {
            grid-template-columns: 1fr;
        }
        .article-sidebar {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .related-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .footer .footer-grid {
            grid-template-columns: 1fr 1fr;
        }
    }

    @media (max-width: 768px) {
        :root { --header-height: 64px; }
        h1 { font-size: 1.8rem; }
        h2 { font-size: 1.5rem; }
        .header-nav { display: none; }
        .header-actions .search-box { display: none; }
        .header-actions .btn-cta { padding: 6px 16px; font-size: 0.8rem; }
        .mobile-menu-btn { display: block; }
        .article-banner { padding: 60px 0 40px; min-height: 240px; }
        .article-banner h1 { font-size: 1.8rem; }
        .article-banner .post-meta { flex-wrap: wrap; gap: 12px; font-size: 0.85rem; }
        .article-body { padding: 24px 20px; }
        .article-body .article-content { font-size: 1rem; }
        .article-sidebar { grid-template-columns: 1fr; }
        .related-grid { grid-template-columns: 1fr; }
        .cta-section h2 { font-size: 1.5rem; }
        .cta-section .btn-cta-large { padding: 14px 32px; font-size: 1rem; }
        .footer .footer-grid { grid-template-columns: 1fr; gap: 28px; }
        .footer { padding: 40px 0 20px; }
    }

    @media (max-width: 520px) {
        .container { padding: 0 16px; }
        .article-banner h1 { font-size: 1.4rem; }
        .article-body { padding: 20px 16px; }
        .related-card .card-img { height: 150px; }
        .header-logo { font-size: 1.1rem; }
        .header-logo i { font-size: 1.2rem; }
    }

    /* ===== 移动端导航抽屉 ===== */
    .mobile-nav-overlay {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,0.4);
        z-index: 2000;
        backdrop-filter: blur(4px);
    }
    .mobile-nav-overlay.active { display: block; }
    .mobile-nav-drawer {
        position: fixed;
        top: 0;
        right: -300px;
        width: 280px;
        height: 100%;
        background: var(--bg-white);
        box-shadow: var(--shadow-xl);
        z-index: 2001;
        padding: 24px 20px;
        transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        overflow-y: auto;
    }
    .mobile-nav-drawer.active { right: 0; }
    .mobile-nav-drawer .drawer-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 28px;
        padding-bottom: 16px;
        border-bottom: 1px solid var(--border-color);
    }
    .mobile-nav-drawer .drawer-header .logo-sm {
        font-size: 1.2rem;
        font-weight: 800;
        color: var(--primary);
    }
    .mobile-nav-drawer .drawer-header .close-btn {
        background: none;
        font-size: 1.5rem;
        color: var(--text-muted);
    }
    .mobile-nav-drawer a {
        display: block;
        padding: 14px 12px;
        border-radius: var(--radius-sm);
        font-size: 1rem;
        font-weight: 500;
        color: var(--text-secondary);
        transition: all var(--transition);
        border-bottom: 1px solid var(--border-color);
    }
    .mobile-nav-drawer a:last-child { border-bottom: none; }
    .mobile-nav-drawer a:hover,
    .mobile-nav-drawer a.active {
        background: var(--bg-light);
        color: var(--primary);
        padding-left: 18px;
    }
    .mobile-nav-drawer .drawer-cta {
        margin-top: 20px;
        display: block;
        text-align: center;
        background: var(--accent);
        color: var(--primary-dark);
        padding: 14px;
        border-radius: var(--radius-sm);
        font-weight: 700;
        border-bottom: none !important;
    }
    .mobile-nav-drawer .drawer-cta:hover {
        background: var(--accent-light);
        padding-left: 14px !important;
    }