/* roulang page: index */
:root {
  --primary: #0d1b2e;
  --primary-light: #1b2838;
  --accent: #f0a500;
  --accent-dark: #d49400;
  --accent-light: #fff4d6;
  --bg: #f7f8fc;
  --bg-alt: #ffffff;
  --text: #1e293b;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-sm: 0 2px 8px rgba(13, 27, 46, 0.06);
  --shadow-md: 0 6px 24px rgba(13, 27, 46, 0.09);
  --shadow-lg: 0 16px 40px rgba(13, 27, 46, 0.14);
  --container: 1200px;
  --space-section: 88px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: var(--transition); }
ul, ol { list-style: none; }
button, input { font-family: inherit; font-size: inherit; border: none; background: none; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: var(--space-section) 0; }
.section-alt { background: var(--bg-alt); }
.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 52px;
}
.section-head .eyebrow {
  display: inline-block;
  background: var(--accent-light);
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  padding: 6px 18px;
  border-radius: 100px;
  margin-bottom: 14px;
  text-transform: uppercase;
}
.section-head h2 {
  font-size: 2.1rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 12px;
  color: var(--primary);
}
.section-head p { color: var(--text-muted); font-size: 1rem; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 32px;
  border-radius: 100px;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: var(--transition);
  line-height: 1.4;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: var(--primary);
  box-shadow: 0 4px 14px rgba(240, 165, 0, 0.35);
}
.btn-primary:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(240, 165, 0, 0.4);
}
.btn-outline {
  border: 2px solid rgba(255, 255, 255, 0.7);
  color: #fff;
  background: transparent;
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
  transform: translateY(-2px);
}
.btn-lg { padding: 16px 42px; font-size: 17px; }
.btn-sm { padding: 8px 22px; font-size: 14px; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 27, 46, 0.95);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), #ffd05c);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 17px;
  box-shadow: 0 4px 12px rgba(240, 165, 0, 0.4);
}
.logo-text {
  color: #fff;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.3px;
}
.main-nav { display: flex; align-items: center; gap: 36px; }
.main-nav a {
  color: rgba(255, 255, 255, 0.75);
  font-size: 15px;
  font-weight: 500;
  position: relative;
  padding: 4px 0;
}
.main-nav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transition: var(--transition);
}
.main-nav a:hover { color: #fff; }
.main-nav a:hover::after { width: 100%; }
.main-nav a.active { color: #fff; }
.main-nav a.active::after { width: 100%; }
.header-actions { display: flex; align-items: center; gap: 12px; }
.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  font-size: 18px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border: 1px solid rgba(255, 255, 255, 0.12);
}

/* Hero */
.hero {
  position: relative;
  background: linear-gradient(135deg, rgba(13, 27, 46, 0.92), rgba(13, 27, 46, 0.75)), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  color: #fff;
  padding: 130px 0 100px;
  overflow: hidden;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -60px;
  right: -40px;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: rgba(240, 165, 0, 0.12);
  filter: blur(60px);
}
.hero .container { position: relative; z-index: 2; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  padding: 8px 20px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 26px;
  backdrop-filter: blur(8px);
}
.hero-badge i { color: var(--accent); }
.hero h1 {
  font-size: 3.1rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 20px;
  max-width: 680px;
  letter-spacing: -0.5px;
}
.hero h1 span { color: var(--accent); }
.hero-desc {
  font-size: 1.12rem;
  color: rgba(255, 255, 255, 0.85);
  max-width: 600px;
  margin-bottom: 36px;
  line-height: 1.8;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-metrics {
  display: flex;
  gap: 48px;
  margin-top: 64px;
  padding-top: 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  flex-wrap: wrap;
}
.metric-item { display: flex; flex-direction: column; }
.metric-num {
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1.2;
}
.metric-label { font-size: 13px; color: rgba(255, 255, 255, 0.65); }

/* Features */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.feature-card {
  background: var(--bg-alt);
  border-radius: var(--radius);
  padding: 36px 30px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(240, 165, 0, 0.3);
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), #ffd05c);
  opacity: 0;
  transition: var(--transition);
}
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: var(--accent-light);
  color: var(--accent-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 20px;
}
.feature-card h3 {
  font-size: 1.16rem;
  margin-bottom: 10px;
  color: var(--primary);
}
.feature-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* Categories */
.category-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}
.category-card {
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
  background: var(--primary);
  min-height: 320px;
  display: flex;
  align-items: flex-end;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}
.category-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.category-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.38;
  transition: var(--transition);
}
.category-card:hover .category-bg { opacity: 0.28; transform: scale(1.04); }
.category-content {
  position: relative;
  z-index: 2;
  padding: 40px 36px;
  color: #fff;
  background: linear-gradient(to top, rgba(13, 27, 46, 0.95), transparent);
}
.category-tag {
  display: inline-block;
  background: var(--accent);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 100px;
  margin-bottom: 14px;
}
.category-content h3 { font-size: 1.6rem; margin-bottom: 10px; }
.category-content p { font-size: 14px; color: rgba(255, 255, 255, 0.8); margin-bottom: 18px; }
.category-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  font-size: 14px;
  color: var(--accent);
}
.category-link i { transition: var(--transition); }
.category-link:hover i { transform: translateX(4px); }

/* Steps */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
  counter-reset: step;
}
.step-item {
  position: relative;
  text-align: center;
  padding: 40px 22px 32px;
  background: var(--bg-alt);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.step-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.step-num {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
  box-shadow: 0 4px 12px rgba(13, 27, 46, 0.25);
}
.step-item h3 { font-size: 1rem; margin-bottom: 8px; color: var(--primary); }
.step-item p { font-size: 13.5px; color: var(--text-muted); line-height: 1.6; }

/* News */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.news-card {
  background: var(--bg-alt);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.news-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(240, 165, 0, 0.35);
}
.news-thumb {
  height: 180px;
  background-size: cover;
  background-position: center;
  position: relative;
}
.news-thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(13, 27, 46, 0.25), transparent);
}
.news-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.news-tag {
  align-self: flex-start;
  background: var(--accent-light);
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 100px;
  margin-bottom: 12px;
}
.news-body h3 {
  font-size: 1.02rem;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 8px;
  color: var(--primary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-body p {
  font-size: 13.5px;
  color: var(--text-muted);
  line-height: 1.6;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 14px;
}
.news-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 12.5px;
  color: #94a3b8;
  border-top: 1px solid var(--border);
  padding-top: 14px;
}
.news-meta i { margin-right: 4px; }
.empty-text {
  text-align: center;
  padding: 60px 20px;
  background: var(--bg-alt);
  border-radius: var(--radius);
  border: 1px dashed var(--border);
  color: var(--text-muted);
  font-size: 15px;
  grid-column: 1 / -1;
}

/* FAQ */
.faq-list { max-width: 820px; margin: 0 auto; }
.faq-item {
  background: var(--bg-alt);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  margin-bottom: 14px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: rgba(240, 165, 0, 0.3); }
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  text-align: left;
}
.faq-question i {
  color: var(--accent);
  transition: var(--transition);
  font-size: 14px;
  flex-shrink: 0;
  margin-left: 16px;
}
.faq-item.open .faq-question i { transform: rotate(180deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 14.5px;
  color: var(--text-muted);
  line-height: 1.8;
}

/* CTA */
.cta-section {
  background: linear-gradient(135deg, var(--primary), #16283e);
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -60px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(240, 165, 0, 0.15);
  filter: blur(70px);
}
.cta-inner {
  text-align: center;
  color: #fff;
  position: relative;
  z-index: 2;
  max-width: 680px;
  margin: 0 auto;
}
.cta-inner h2 {
  font-size: 2rem;
  margin-bottom: 14px;
  font-weight: 700;
}
.cta-inner p {
  color: rgba(255, 255, 255, 0.72);
  margin-bottom: 32px;
  font-size: 15.5px;
}

/* Footer */
.site-footer {
  background: #0a1626;
  padding: 64px 0 0;
  color: rgba(255, 255, 255, 0.6);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 44px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-brand .logo-text { color: #fff; font-size: 18px; }
.footer-brand p { font-size: 14px; margin-top: 16px; line-height: 1.8; max-width: 380px; }
.footer-col h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 20px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 14px; color: rgba(255, 255, 255, 0.55); }
.footer-col ul li a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
  flex-wrap: wrap;
  gap: 12px;
}

/* Breadcrumb */
.breadcrumb {
  padding: 28px 0;
  font-size: 14px;
  color: var(--text-muted);
}
.breadcrumb a { color: var(--primary); }
.breadcrumb a:hover { color: var(--accent-dark); }
.breadcrumb span { margin: 0 8px; color: #cbd5e1; }

/* Page Hero */
.page-hero {
  background: linear-gradient(135deg, rgba(13, 27, 46, 0.92), rgba(13, 27, 46, 0.78)), url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  color: #fff;
  padding: 80px 0 60px;
  text-align: center;
}
.page-hero h1 { font-size: 2.4rem; margin-bottom: 12px; }
.page-hero p { color: rgba(255, 255, 255, 0.75); max-width: 600px; margin: 0 auto; }

/* Article */
.article-wrapper {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 40px;
  padding: 48px 0 72px;
}
.article-main {
  background: var(--bg-alt);
  border-radius: var(--radius);
  padding: 40px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 13.5px;
  color: var(--text-muted);
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 28px;
  flex-wrap: wrap;
}
.article-meta .tag {
  background: var(--accent-light);
  color: var(--accent-dark);
  padding: 4px 14px;
  border-radius: 100px;
  font-weight: 600;
  font-size: 12px;
}
.article-content { font-size: 15.5px; line-height: 1.9; color: var(--text); }
.article-content h2 { font-size: 1.5rem; margin: 34px 0 14px; color: var(--primary); }
.article-content h3 { font-size: 1.2rem; margin: 26px 0 12px; color: var(--primary); }
.article-content p { margin-bottom: 18px; }
.article-content ul { margin: 0 0 18px 20px; list-style: disc; }
.article-content ul li { margin-bottom: 8px; }
.article-sidebar { display: flex; flex-direction: column; gap: 24px; }
.sidebar-card {
  background: var(--bg-alt);
  border-radius: var(--radius);
  padding: 26px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}
.sidebar-card h3 {
  font-size: 16px;
  color: var(--primary);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.sidebar-list li { margin-bottom: 12px; }
.sidebar-list a {
  font-size: 14px;
  color: var(--text-muted);
  display: flex;
  gap: 8px;
  align-items: flex-start;
  line-height: 1.5;
}
.sidebar-list a:hover { color: var(--accent-dark); }
.sidebar-list i { color: var(--accent); font-size: 11px; margin-top: 6px; }
.not-found-panel {
  text-align: center;
  padding: 80px 40px;
  background: var(--bg-alt);
  border-radius: var(--radius);
  border: 1px dashed var(--border);
}
.not-found-panel i { font-size: 48px; color: #cbd5e1; margin-bottom: 20px; }
.not-found-panel p { font-size: 18px; color: var(--text-muted); margin-bottom: 20px; }

/* Category page */
.category-hero {
  background: linear-gradient(135deg, rgba(13, 27, 46, 0.92), rgba(13, 27, 46, 0.76)), url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
  padding: 90px 0 70px;
  text-align: center;
  color: #fff;
}
.category-hero h1 { font-size: 2.5rem; margin-bottom: 14px; }
.category-hero p { max-width: 640px; margin: 0 auto; color: rgba(255, 255, 255, 0.75); }
.category-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}
.category-posts-item {
  background: var(--bg-alt);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
}
.category-posts-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.cp-thumb {
  width: 200px;
  min-height: 180px;
  background-size: cover;
  background-position: center;
  flex-shrink: 0;
}
.cp-body { padding: 24px; display: flex; flex-direction: column; }
.cp-body h3 { font-size: 1.02rem; margin-bottom: 8px; line-height: 1.5; color: var(--primary); }
.cp-body p { font-size: 13.5px; color: var(--text-muted); flex: 1; }
.cp-body .cp-meta { font-size: 12.5px; color: #94a3b8; margin-top: 12px; }

/* Filter tabs */
.filter-tabs {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.filter-tab {
  padding: 10px 26px;
  border-radius: 100px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
}
.filter-tab.active,
.filter-tab:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* Responsive */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .article-wrapper { grid-template-columns: 1fr; }
  .article-sidebar { flex-direction: row; flex-wrap: wrap; }
  .sidebar-card { flex: 1; min-width: 240px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  :root { --space-section: 60px; }
  .main-nav {
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    background: rgba(13, 27, 46, 0.98);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    transform: translateY(-120%);
    transition: var(--transition);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }
  .main-nav.open { transform: translateY(0); }
  .menu-toggle { display: flex; }
  .header-actions .btn { display: none; }
  .hero { padding: 90px 0 70px; }
  .hero h1 { font-size: 2.1rem; }
  .hero-metrics { gap: 28px; }
  .category-grid { grid-template-columns: 1fr; }
  .article-main { padding: 28px 22px; }
  .category-list { grid-template-columns: 1fr; }
  .category-posts-item { flex-direction: column; }
  .cp-thumb { width: 100%; height: 170px; }
  .section-head h2 { font-size: 1.7rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 520px) {
  .features-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .hero-actions .btn { width: 100%; }
  .logo-text { font-size: 15px; }
  .hero h1 { font-size: 1.7rem; }
  .hero-desc { font-size: 15px; }
  .cta-inner h2 { font-size: 1.6rem; }
}

/* roulang page: article */
:root{
  --primary:#0e1a33;
  --primary-light:#182c50;
  --primary-dark:#080f1e;
  --accent:#f5b301;
  --accent-light:#ffd04d;
  --accent-dark:#d99a00;
  --bg:#f4f6fb;
  --bg-alt:#eef1f7;
  --white:#fff;
  --text:#1a2233;
  --text-weak:#738096;
  --border:#e2e8f0;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 8px 24px rgba(10,20,40,.06);
  --shadow-lg:0 18px 44px rgba(10,20,40,.12);
  --transition:all .3s ease;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button{font-family:inherit;border:none;background:none;cursor:pointer}
input{font-family:inherit}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.brand-logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:19px;color:var(--text)}
.logo-icon{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;background:linear-gradient(135deg,var(--accent),var(--accent-dark));border-radius:10px;color:var(--primary-dark);font-size:17px;box-shadow:0 4px 14px rgba(245,179,1,.35)}
.logo-text{white-space:nowrap}
.btn-primary,.btn-outline,.btn-nav-cta{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:999px;font-weight:600;font-size:15px;
  transition:var(--transition);letter-spacing:.3px;line-height:1.2;
}
.btn-primary{background:linear-gradient(135deg,var(--accent),var(--accent-dark));color:var(--primary-dark);box-shadow:0 6px 20px rgba(245,179,1,.32)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 28px rgba(245,179,1,.42)}
.btn-outline{border:2px solid var(--border);color:var(--text)}
.btn-outline:hover{border-color:var(--accent);color:var(--primary);background:rgba(245,179,1,.08);transform:translateY(-2px)}
.tag,.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 14px;border-radius:999px;font-size:13px;font-weight:600;
  background:rgba(245,179,1,.12);color:var(--accent-dark);
}
.tag{font-size:12px;padding:3px 12px}
.badge{background:var(--primary);color:#fff}

/* ===== Header/Nav ===== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(226,232,240,.7);
  box-shadow:0 2px 12px rgba(10,20,40,.03);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px}
.main-nav{display:flex;align-items:center;gap:6px}
.main-nav a{
  padding:10px 16px;border-radius:999px;font-weight:600;font-size:15px;color:var(--text);
  transition:var(--transition);position:relative;
}
.main-nav a:hover{background:rgba(245,179,1,.1);color:var(--primary)}
.main-nav a.active{background:var(--primary);color:#fff;box-shadow:0 4px 14px rgba(14,26,51,.25)}
.main-nav .btn-nav-cta{
  background:linear-gradient(135deg,var(--accent),var(--accent-dark));
  color:var(--primary-dark);padding:9px 20px;margin-left:8px;box-shadow:0 4px 16px rgba(245,179,1,.3);
}
.main-nav .btn-nav-cta:hover{transform:translateY(-2px);box-shadow:0 8px 22px rgba(245,179,1,.4);background:linear-gradient(135deg,var(--accent-light),var(--accent))}
.nav-toggle{display:none;flex-direction:column;gap:6px;padding:8px;border-radius:8px;transition:var(--transition)}
.nav-toggle span{display:block;width:24px;height:2px;background:var(--text);border-radius:2px;transition:var(--transition)}
.nav-toggle.active span:nth-child(1){transform:translateY(8px) rotate(45deg)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}

/* ===== Page Banner ===== */
.page-banner{
  position:relative;padding:96px 0 88px;background-size:cover;background-position:center;
  color:#fff;overflow:hidden;
}
.page-banner::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(120deg, rgba(8,15,30,.92) 0%, rgba(14,26,51,.72) 55%, rgba(14,26,51,.38) 100%);
}
.page-banner .container{position:relative;z-index:2}
.breadcrumb{
  display:flex;align-items:center;gap:8px;font-size:15px;color:rgba(255,255,255,.75);
  margin-bottom:24px;flex-wrap:wrap;
}
.breadcrumb a{color:rgba(255,255,255,.85);transition:var(--transition)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb i{font-size:12px;color:rgba(255,255,255,.5)}
.breadcrumb .current{color:var(--accent);font-weight:600}
.page-banner h1{
  font-size:44px;line-height:1.25;font-weight:800;letter-spacing:-.5px;
  max-width:820px;margin-bottom:20px;text-shadow:0 4px 24px rgba(0,0,0,.2);
}
.banner-meta{display:flex;align-items:center;gap:20px;flex-wrap:wrap;font-size:15px;color:rgba(255,255,255,.85)}
.banner-meta .tag{background:rgba(255,255,255,.16);color:#fff}
.banner-meta i{margin-right:6px;color:var(--accent)}

/* ===== Article Main ===== */
.article-main-section{padding:60px 0 50px}
.article-layout{display:grid;grid-template-columns:1fr 340px;gap:36px;align-items:start}
.article-card{
  background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);
  padding:40px;position:relative;overflow:hidden;
}
.article-content-body{font-size:16.5px;color:#2d3648;line-height:1.9}
.article-content-body h2{
  font-size:26px;font-weight:700;margin:32px 0 14px;color:var(--primary);
  padding-left:16px;border-left:4px solid var(--accent);line-height:1.4;
}
.article-content-body h3{font-size:20px;font-weight:700;margin:26px 0 10px;color:var(--primary)}
.article-content-body p{margin-bottom:16px}
.article-content-body ul,.article-content-body ol{margin:0 0 18px;padding-left:22px}
.article-content-body ul li{position:relative;padding-left:18px;margin-bottom:8px}
.article-content-body ul li::before{
  content:'';position:absolute;left:0;top:12px;width:8px;height:8px;border-radius:50%;
  background:var(--accent);
}
.article-content-body ol li{margin-bottom:8px;list-style:decimal;padding-left:4px}
.article-content-body blockquote{
  margin:22px 0;padding:20px 24px;background:rgba(245,179,1,.08);
  border-left:4px solid var(--accent);border-radius:0 12px 12px 0;color:#4b5565;
}
.article-content-body img{border-radius:12px;margin:20px 0;box-shadow:var(--shadow)}
.article-content-body a{color:var(--accent-dark);font-weight:600;border-bottom:1px solid transparent}
.article-content-body a:hover{border-bottom-color:var(--accent-dark)}
.article-bottom-tags{margin-top:36px;padding-top:24px;border-top:1px solid var(--border);display:flex;gap:10px;flex-wrap:wrap}

/* Not Found */
.not-found{text-align:center;padding:60px 20px}
.not-found-icon{
  display:inline-flex;align-items:center;justify-content:center;width:84px;height:84px;
  background:rgba(245,179,1,.1);border-radius:50%;color:var(--accent-dark);font-size:36px;margin-bottom:24px;
}
.not-found h2{font-size:30px;font-weight:800;color:var(--primary);margin-bottom:12px}
.not-found p{color:var(--text-weak);font-size:16px;max-width:440px;margin:0 auto 30px}
.not-found-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* Sidebar */
.article-sidebar{display:flex;flex-direction:column;gap:24px;position:sticky;top:96px}
.sidebar-card{background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);padding:26px}
.sidebar-card h3{
  font-size:17px;font-weight:700;color:var(--primary);margin-bottom:20px;
  display:flex;align-items:center;gap:10px;padding-bottom:14px;border-bottom:1px solid var(--border);
}
.sidebar-card h3 i{color:var(--accent-dark)}
.hot-list li{
  display:flex;gap:14px;align-items:flex-start;padding:12px 0;border-bottom:1px solid var(--border);transition:var(--transition);
}
.hot-list li:last-child{border-bottom:none}
.hot-list li:hover{padding-left:6px}
.hot-num{
  flex-shrink:0;width:28px;height:28px;border-radius:8px;background:rgba(245,179,1,.12);
  color:var(--accent-dark);font-weight:800;font-size:13px;display:flex;align-items:center;justify-content:center;
}
.hot-list a{flex:1;min-width:0}
.hot-title{display:block;font-size:14px;font-weight:600;color:var(--text);line-height:1.5;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;transition:var(--transition)}
.hot-list a:hover .hot-title{color:var(--accent-dark)}
.hot-cat{display:inline-block;font-size:12px;color:var(--text-weak);margin-top:4px}
.category-list li{margin-bottom:6px}
.category-list a{
  display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:12px;
  font-size:15px;font-weight:500;color:var(--text);transition:var(--transition);background:var(--bg);
}
.category-list a:hover{background:rgba(245,179,1,.1);color:var(--accent-dark);transform:translateX(4px)}
.category-list i{width:20px;text-align:center;color:var(--accent-dark)}

/* ===== Recommend ===== */
.recommend-section{padding:64px 0;background:var(--white)}
.section-head{text-align:center;margin-bottom:44px}
.section-kicker{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:2px;color:var(--accent-dark);
  text-transform:uppercase;margin-bottom:8px;
}
.section-head h2{font-size:34px;font-weight:800;color:var(--primary);letter-spacing:-.5px;margin-bottom:8px}
.section-head p{color:var(--text-weak);font-size:15px}
.recommend-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.recommend-card{
  background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);
  border:1px solid var(--border);transition:var(--transition);
}
.recommend-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.recommend-cover{position:relative;aspect-ratio:16/9;overflow:hidden}
.recommend-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.recommend-card:hover .recommend-cover img{transform:scale(1.06)}
.cover-tag{
  position:absolute;top:14px;left:14px;background:rgba(14,26,51,.85);color:#fff;
  padding:4px 12px;border-radius:999px;font-size:12px;font-weight:600;backdrop-filter:blur(4px);
}
.recommend-body{padding:22px}
.recommend-body h3{
  font-size:18px;font-weight:700;color:var(--text);line-height:1.45;
  overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;
  margin-bottom:10px;transition:var(--transition);
}
.recommend-card:hover .recommend-body h3{color:var(--accent-dark)}
.recommend-body p{
  font-size:14px;color:var(--text-weak);line-height:1.7;margin-bottom:16px;
  overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;
}
.recommend-footer{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-weak)}
.read-more{color:var(--accent-dark);font-weight:600;transition:var(--transition)}
.read-more i{transition:transform .3s ease}
.recommend-card:hover .read-more i{transform:translateX(4px)}

/* ===== FAQ ===== */
.faq-section{padding:64px 0}
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{
  background:var(--white);border-radius:14px;box-shadow:var(--shadow);overflow:hidden;
  margin-bottom:14px;border:1px solid var(--border);transition:var(--transition);
}
.faq-item.active{border-color:rgba(245,179,1,.4)}
.faq-question{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 24px;font-size:17px;font-weight:600;color:var(--primary);cursor:pointer;transition:var(--transition);
}
.faq-question:hover{color:var(--accent-dark)}
.faq-item.active .faq-question{color:var(--accent-dark)}
.faq-icon{
  flex-shrink:0;width:28px;height:28px;border-radius:50%;background:rgba(245,179,1,.12);
  display:flex;align-items:center;justify-content:center;color:var(--accent-dark);font-size:14px;transition:var(--transition);
}
.faq-item.active .faq-icon{transform:rotate(45deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s ease}
.faq-item.active .faq-answer{max-height:400px}
.faq-answer p{padding:0 24px 22px;color:var(--text-weak);font-size:15px;line-height:1.8}

/* ===== CTA ===== */
.cta-section{padding:64px 0}
.cta-card{
  position:relative;background:linear-gradient(130deg,#0a1528,#1a3a66 70%,#1d4278);
  border-radius:24px;padding:60px 48px;text-align:center;color:#fff;overflow:hidden;box-shadow:var(--shadow-lg);
}
.cta-card::before{
  content:'';position:absolute;inset:0;background-image:url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;opacity:.12;
}
.cta-card .container{position:relative;z-index:2}
.cta-card h2{font-size:34px;font-weight:800;letter-spacing:-.5px;margin-bottom:14px}
.cta-card p{font-size:16px;color:rgba(255,255,255,.8);max-width:560px;margin:0 auto 32px}
.cta-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.cta-actions .btn-primary{padding:14px 34px;font-size:16px}
.cta-actions .btn-outline{border-color:rgba(255,255,255,.4);color:#fff}
.cta-actions .btn-outline:hover{background:rgba(255,255,255,.1);border-color:#fff}

/* ===== Footer ===== */
.site-footer{background:var(--primary-dark);color:rgba(255,255,255,.72);padding:60px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:48px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-brand .brand-logo{color:#fff;margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.8;margin-top:14px;max-width:320px}
.footer-col h4{color:#fff;font-size:16px;font-weight:700;margin-bottom:20px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{
  font-size:14px;color:rgba(255,255,255,.65);transition:var(--transition);display:inline-flex;align-items:center;gap:6px;
}
.footer-col ul a:hover{color:var(--accent);padding-left:4px}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;padding:22px 0;
  font-size:13px;color:rgba(255,255,255,.5);flex-wrap:wrap;gap:10px;
}
.footer-bottom span:last-child{
  display:inline-flex;align-items:center;gap:6px;
}

/* ===== Responsive ===== */
@media(max-width:1024px){
  .article-layout{grid-template-columns:1fr;gap:28px}
  .article-sidebar{position:static;flex-direction:row;flex-wrap:wrap}
  .sidebar-card{flex:1;min-width:260px}
  .recommend-grid{grid-template-columns:repeat(2,1fr)}
  .page-banner h1{font-size:36px}
}
@media(max-width:768px){
  .nav-toggle{display:flex}
  .main-nav{
    position:absolute;top:72px;left:0;right:0;background:var(--white);
    flex-direction:column;align-items:stretch;padding:16px;gap:8px;
    border-bottom:1px solid var(--border);box-shadow:var(--shadow-lg);
    transform:translateY(-12px);opacity:0;visibility:hidden;transition:var(--transition);z-index:99;
  }
  .main-nav.open{transform:translateY(0);opacity:1;visibility:visible}
  .main-nav a{padding:14px 18px;border-radius:12px;font-size:16px}
  .main-nav a.active{background:var(--primary)}
  .main-nav .btn-nav-cta{margin-left:0;margin-top:4px;justify-content:center;padding:14px 18px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;text-align:center}
  .page-banner{padding:72px 0 64px}
  .page-banner h1{font-size:30px}
  .banner-meta{gap:12px;flex-direction:column;align-items:flex-start}
  .article-card{padding:26px}
  .cta-card{padding:44px 24px}
  .cta-card h2{font-size:26px}
  .section-head h2{font-size:28px}
}
@media(max-width:520px){
  .container{padding:0 16px}
  .brand-logo .logo-text{font-size:16px;white-space:normal;line-height:1.2}
  .recommend-grid{grid-template-columns:1fr}
  .header-inner{height:64px}
  .main-nav{top:64px}
  .article-card{padding:20px;border-radius:14px}
  .article-content-body{font-size:15.5px}
  .page-banner h1{font-size:26px}
  .section-head h2{font-size:26px}
  .footer-grid{gap:24px}
  .not-found{padding:40px 14px}
}

/* roulang page: category1 */
:root {
  --primary: #1456c4;
  --primary-dark: #0d3f9e;
  --primary-light: #e8effb;
  --accent: #ff6a3d;
  --accent-dark: #e74c1b;
  --text-1: #122033;
  --text-2: #52627a;
  --text-3: #8a97a8;
  --border: #e8edf3;
  --bg-1: #ffffff;
  --bg-2: #f4f7fc;
  --bg-3: #0b1830;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-1: 0 2px 8px rgba(15, 35, 70, 0.06);
  --shadow-2: 0 12px 30px rgba(15, 35, 70, 0.09);
  --shadow-3: 0 24px 60px rgba(15, 35, 70, 0.16);
  --header-h: 76px;
  --space-section: 90px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg-1);
  color: var(--text-1);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.3s ease, background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

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

button {
  font-family: inherit;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  padding: 14px 28px;
  border-radius: 999px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.35, 1);
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 8px 22px rgba(20, 86, 196, 0.25);
}

.btn-primary:hover {
  background: var(--primary-dark);
  box-shadow: 0 12px 28px rgba(20, 86, 196, 0.35);
  transform: translateY(-2px);
}

.btn-ghost {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.6);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
  transform: translateY(-2px);
}

.btn-accent {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 8px 22px rgba(255, 106, 61, 0.3);
}

.btn-accent:hover {
  background: var(--accent-dark);
  box-shadow: 0 12px 30px rgba(255, 106, 61, 0.4);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 16px;
}

/* Header */
.site-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(16px);
  border-bottom: 1px solid rgba(232, 237, 243, 0.8);
  transition: box-shadow 0.3s ease;
}

.site-header.scrolled {
  box-shadow: 0 8px 30px rgba(15, 35, 70, 0.08);
}

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

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

.logo-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--primary) 0%, #2f7cf6 100%);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  box-shadow: 0 6px 16px rgba(20, 86, 196, 0.3);
}

.logo-text {
  font-size: 17px;
  font-weight: 800;
  color: var(--text-1);
  letter-spacing: -0.2px;
  line-height: 1.3;
}

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

.main-nav a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-2);
  padding: 8px 16px;
  border-radius: 999px;
  transition: all 0.3s ease;
}

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

.main-nav a.active {
  color: var(--primary);
  background: var(--primary-light);
  font-weight: 700;
}

.header-extra {
  display: flex;
  align-items: center;
  gap: 14px;
}

.header-cta {
  padding: 10px 24px;
  font-size: 14px;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 10px;
  font-size: 18px;
  color: var(--text-1);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}

.nav-toggle:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* ===== Page Hero ===== */
.page-hero {
  position: relative;
  min-height: 560px;
  display: flex;
  align-items: center;
  background-size: cover;
  background-position: center;
  margin-top: var(--header-h);
  overflow: hidden;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(8, 20, 45, 0.92) 0%, rgba(13, 50, 110, 0.78) 50%, rgba(10, 35, 80, 0.5) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 80px 24px;
  max-width: 720px;
  margin-left: 0;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 999px;
  padding: 8px 18px;
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 24px;
  backdrop-filter: blur(4px);
}

.hero-badge i {
  color: #ffd166;
}

.hero-content h1 {
  font-size: clamp(32px, 5vw, 52px);
  line-height: 1.2;
  font-weight: 800;
  color: #fff;
  margin-bottom: 18px;
  letter-spacing: -0.5px;
}

.hero-content h1 span {
  color: #7eb2ff;
}

.hero-content p {
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 32px;
  max-width: 580px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.hero-tip {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 28px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
}

.hero-tip i {
  color: #4ade80;
}

/* 统计条 */
.stats-bar {
  background: #fff;
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-1);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.stat-item {
  padding: 28px 24px;
  text-align: center;
  border-right: 1px solid var(--border);
}

.stat-item:last-child {
  border-right: none;
}

.stat-item .stat-num {
  font-size: 30px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
}

.stat-item .stat-label {
  font-size: 13px;
  color: var(--text-3);
  margin-top: 4px;
}

/* ===== Section ===== */
.section {
  padding: var(--space-section) 0;
}

.section-alt {
  background: var(--bg-2);
}

.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 56px;
}

.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--primary);
  background: var(--primary-light);
  padding: 6px 18px;
  border-radius: 999px;
  margin-bottom: 16px;
}

.section-head h2 {
  font-size: clamp(26px, 3.5vw, 38px);
  font-weight: 800;
  color: var(--text-1);
  margin-bottom: 14px;
  letter-spacing: -0.4px;
}

.section-head p {
  font-size: 15px;
  color: var(--text-2);
  line-height: 1.8;
}

/* ===== 下载方式 ===== */
.method-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.method-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  position: relative;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.method-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-2);
}

.method-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary-light) 0%, #dbe8fc 100%);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: var(--primary);
  margin-bottom: 20px;
}

.method-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-1);
  margin-bottom: 10px;
}

.method-card p {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: 18px;
}

.method-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-light);
  padding: 4px 14px;
  border-radius: 999px;
}

.method-tag.hot {
  color: var(--accent-dark);
  background: #fff1ec;
}

/* ===== 流程步骤 ===== */
.steps-section {
  background: var(--bg-2);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.step-item {
  position: relative;
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  box-shadow: var(--shadow-1);
  border: 1px solid var(--border);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.step-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2);
}

.step-number {
  width: 44px;
  height: 44px;
  background: var(--primary);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 18px;
  box-shadow: 0 8px 18px rgba(20, 86, 196, 0.28);
}

.step-item h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-1);
  margin-bottom: 8px;
}

.step-item p {
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.7;
}

/* ===== 版本亮点 ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-3);
}

.feature-img {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/10;
}

.feature-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.feature-img::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(8, 20, 45, 0.5) 100%);
}

.feature-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 2;
  background: rgba(255, 255, 255, 0.94);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  color: var(--primary);
  box-shadow: var(--shadow-1);
}

.feature-body {
  padding: 26px 24px 30px;
}

.feature-body h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-body p {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.7;
}

/* ===== 系统要求 ===== */
.sys-wrap {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 28px;
  align-items: center;
}

.sys-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-2);
  position: relative;
}

.sys-image img {
  width: 100%;
  height: 100%;
  min-height: 360px;
  object-fit: cover;
}

.sys-panels {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.sys-panel {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: box-shadow 0.3s ease;
}

.sys-panel:hover {
  box-shadow: var(--shadow-2);
}

.sys-panel h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
}

.sys-panel h3 i {
  color: var(--primary);
}

.sys-list {
  list-style: none;
}

.sys-list li {
  display: flex;
  gap: 10px;
  font-size: 14px;
  color: var(--text-2);
  padding: 7px 0;
  border-bottom: 1px dashed var(--border);
}

.sys-list li:last-child {
  border-bottom: none;
}

.sys-list li i {
  color: #22c55e;
  margin-top: 4px;
}

/* ===== FAQ ===== */
.faq-wrap {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow 0.3s ease;
}

.faq-item:hover {
  box-shadow: var(--shadow-1);
}

.faq-item summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 24px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-1);
  transition: color 0.3s ease;
}

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

.faq-item summary::after {
  content: "\f078";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  font-size: 14px;
  color: var(--text-3);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

.faq-item[open] summary::after {
  transform: rotate(180deg);
  color: var(--primary);
}

.faq-item .faq-answer {
  padding: 0 24px 22px;
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.8;
  border-top: 1px solid var(--border);
  margin-top: 0;
  padding-top: 16px;
}

/* ===== CTA ===== */
.cta-section {
  background: linear-gradient(135deg, var(--bg-3) 0%, #122750 60%, #1a3a70 100%);
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -80px;
  width: 300px;
  height: 300px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 50%;
}

.cta-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
}

.cta-inner h2 {
  font-size: clamp(24px, 3vw, 34px);
  color: #fff;
  font-weight: 800;
  margin-bottom: 16px;
}

.cta-inner p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.82);
  margin-bottom: 32px;
  line-height: 1.8;
}

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

.cta-note {
  margin-top: 24px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.cta-note i {
  color: #4ade80;
}

/* ===== Footer ===== */
.site-footer {
  background: #0c1322;
  color: rgba(255, 255, 255, 0.72);
  padding: 60px 0 0;
  font-size: 14px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
}

.footer-brand p {
  margin-top: 16px;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.6);
  max-width: 320px;
}

.footer-col h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 18px;
}

.footer-col ul {
  list-style: none;
}

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

.footer-col a {
  color: rgba(255, 255, 255, 0.6);
  transition: all 0.3s ease;
}

.footer-col a:hover {
  color: #fff;
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 22px 0;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .method-grid,
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .sys-wrap {
    grid-template-columns: 1fr;
  }
  .sys-image {
    min-height: 280px;
  }
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --space-section: 60px;
    --header-h: 64px;
  }

  .header-inner {
    flex-wrap: wrap;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 20px 24px;
    gap: 4px;
    box-shadow: 0 20px 40px rgba(15, 35, 70, 0.12);
    border-bottom: 1px solid var(--border);
  }

  .main-nav.open {
    display: flex;
  }

  .main-nav a {
    width: 100%;
    padding: 12px 16px;
    border-radius: 10px;
  }

  .nav-toggle {
    display: flex;
  }

  .header-cta {
    display: none;
  }

  .page-hero {
    min-height: 480px;
  }

  .hero-content {
    padding: 60px 24px;
  }

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

  .stat-item {
    border-bottom: 1px solid var(--border);
  }

  .stat-item:nth-child(3),
  .stat-item:nth-child(4) {
    border-bottom: none;
  }

  .stat-item:nth-child(2) {
    border-right: none;
  }

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

  .features-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

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

  .sys-panels {
    grid-template-columns: 1fr;
  }

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

  .cta-actions {
    flex-direction: column;
    align-items: center;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }

  .hero-content h1 {
    font-size: 28px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .stat-item .stat-num {
    font-size: 24px;
  }

  .section-head {
    margin-bottom: 36px;
  }

  .sys-panels {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* roulang page: category2 */
:root{
  --primary:#f59e0b;
  --primary-dark:#d97706;
  --primary-light:#fef3c7;
  --primary-rgb:245,158,11;
  --dark:#0b0f1a;
  --dark-light:#1a2332;
  --dark-lighter:#2d3748;
  --bg:#f8fafc;
  --surface:#ffffff;
  --text:#0f172a;
  --text-secondary:#475569;
  --text-muted:#94a3b8;
  --border:#e2e8f0;
  --success:#10b981;
  --info:#3b82f6;
  --danger:#ef4444;
  --radius:16px;
  --radius-sm:10px;
  --radius-lg:24px;
  --radius-pill:50px;
  --shadow-sm:0 2px 10px rgba(0,0,0,0.05);
  --shadow:0 8px 30px rgba(0,0,0,0.08);
  --shadow-lg:0 16px 48px rgba(0,0,0,0.12);
  --transition:all 0.35s cubic-bezier(0.4,0,0.2,1);
  --container:1200px;
  --nav-height:72px;
  --space-2xl:100px;
  --space-xl:72px;
  --space-lg:48px;
  --space-md:28px;
  --space-sm:16px;
  --space-xs:8px;
  --font-sans:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font-sans);font-size:16px;line-height:1.65;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:var(--transition)}
button{font-family:inherit;cursor:pointer;border:none;background:none}
ul,ol{list-style:none}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:var(--space-xl) 0}
.section-head{text-align:center;max-width:760px;margin:0 auto var(--space-lg)}
.section-head .tag{display:inline-flex;align-items:center;gap:6px;background:var(--primary-light);color:var(--primary-dark);font-size:13px;font-weight:600;padding:6px 16px;border-radius:var(--radius-pill);margin-bottom:16px}
.section-head h2{font-size:34px;font-weight:800;line-height:1.25;letter-spacing:-0.02em;color:var(--text)}
.section-head p{font-size:16px;color:var(--text-secondary);margin-top:12px;line-height:1.7}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;font-size:15px;padding:12px 28px;border-radius:var(--radius-pill);transition:var(--transition);border:2px solid transparent;line-height:1.2;white-space:nowrap}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 8px 24px rgba(var(--primary-rgb),0.4)}
.btn-outline{border-color:rgba(255,255,255,0.6);color:#fff;background:transparent}
.btn-outline:hover{border-color:#fff;background:rgba(255,255,255,0.12);transform:translateY(-2px)}
.btn-outline-dark{border-color:var(--border);color:var(--text);background:var(--surface)}
.btn-outline-dark:hover{border-color:var(--primary);color:var(--primary-dark);transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.btn-lg{padding:16px 40px;font-size:17px}
.btn-sm{padding:8px 20px;font-size:14px}
.badge{display:inline-flex;align-items:center;gap:5px;font-size:12px;font-weight:600;padding:4px 12px;border-radius:var(--radius-pill);background:rgba(255,255,255,0.15);color:#fff;backdrop-filter:blur(8px)}
.badge-accent{background:var(--primary);color:#fff}

/* Header */
.site-header{background:var(--dark);position:sticky;top:0;z-index:1000;box-shadow:0 2px 20px rgba(0,0,0,0.25)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:var(--nav-height);gap:20px}
.brand-logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-icon{width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg,var(--primary),#fbbf24);display:flex;align-items:center;justify-content:center;color:#fff;font-size:18px;box-shadow:0 4px 15px rgba(var(--primary-rgb),0.35);flex-shrink:0}
.logo-text{font-weight:800;font-size:18px;color:#fff;letter-spacing:-0.01em;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:4px}
.main-nav a{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;font-size:14px;font-weight:500;color:rgba(255,255,255,0.72);border-radius:var(--radius-pill);transition:var(--transition)}
.main-nav a:hover{color:#fff;background:rgba(255,255,255,0.08)}
.main-nav a.active{color:#fff;background:var(--primary);font-weight:600}
.header-actions{display:flex;align-items:center;gap:12px}
.header-actions .badge{background:rgba(var(--primary-rgb),0.2);color:var(--primary);border:1px solid rgba(var(--primary-rgb),0.25)}
.nav-toggle{display:none;width:44px;height:44px;border-radius:10px;background:rgba(255,255,255,0.08);align-items:center;justify-content:center;color:#fff;font-size:20px}
.nav-toggle:hover{background:rgba(255,255,255,0.15)}

/* Hero */
.page-hero{position:relative;padding:90px 0 80px;background:linear-gradient(135deg,rgba(11,15,26,0.92),rgba(26,35,50,0.85)),url('/assets/images/backpic/back-1.png') center/cover no-repeat;color:#fff;overflow:hidden}
.page-hero::after{content:'';position:absolute;bottom:-80px;right:-80px;width:300px;height:300px;border-radius:50%;background:rgba(var(--primary-rgb),0.12);filter:blur(60px)}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,0.65);margin-bottom:20px;flex-wrap:wrap}
.breadcrumb a{color:rgba(255,255,255,0.65)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb i{font-size:10px;color:rgba(255,255,255,0.4)}
.hero-content{position:relative;z-index:2;max-width:780px}
.hero-content .hero-tag{display:inline-flex;align-items:center;gap:8px;background:rgba(var(--primary-rgb),0.18);border:1px solid rgba(var(--primary-rgb),0.35);color:var(--primary);font-size:13px;font-weight:600;padding:6px 18px;border-radius:var(--radius-pill);margin-bottom:20px}
.hero-content h1{font-size:44px;font-weight:800;line-height:1.2;letter-spacing:-0.03em;margin-bottom:16px}
.hero-content h1 .highlight{color:var(--primary)}
.hero-content p{font-size:17px;line-height:1.75;color:rgba(255,255,255,0.82);margin-bottom:32px;max-width:640px}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:28px}
.hero-meta{display:flex;gap:20px;flex-wrap:wrap}
.hero-meta span{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:rgba(255,255,255,0.6)}

/* Stats */
.stats-section{background:var(--surface);border-bottom:1px solid var(--border);padding:36px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat-item{text-align:center;padding:20px;border-radius:var(--radius);background:var(--bg);border:1px solid var(--border);transition:var(--transition)}
.stat-item:hover{border-color:var(--primary);box-shadow:var(--shadow-sm);transform:translateY(-3px)}
.stat-num{font-size:36px;font-weight:800;color:var(--text);line-height:1.2}
.stat-num span{color:var(--primary);font-size:22px;font-weight:700}
.stat-label{font-size:14px;color:var(--text-secondary);margin-top:6px}

/* Steps */
.steps-section{background:var(--bg)}
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;margin-top:44px}
.step-card{position:relative;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:32px 24px;text-align:center;transition:var(--transition);overflow:hidden}
.step-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--primary),#fbbf24);opacity:0;transition:var(--transition)}
.step-card:hover{box-shadow:var(--shadow);transform:translateY(-4px)}
.step-card:hover::before{opacity:1}
.step-num{width:48px;height:48px;border-radius:50%;background:var(--primary-light);color:var(--primary-dark);font-size:20px;font-weight:800;display:flex;align-items:center;justify-content:center;margin:0 auto 20px;border:2px solid rgba(var(--primary-rgb),0.2)}
.step-card h3{font-size:18px;font-weight:700;margin-bottom:10px;color:var(--text)}
.step-card p{font-size:14px;color:var(--text-secondary);line-height:1.6}
.step-arrow{position:absolute;right:-20px;top:50%;transform:translateY(-50%);color:var(--border);font-size:18px;z-index:2}
@media(max-width:900px){.step-arrow{display:none}}

/* Tutorial Cards */
.tutorial-section{background:var(--surface)}
.cards-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.tutorial-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:var(--transition);display:flex;flex-direction:column}
.tutorial-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-6px);border-color:rgba(var(--primary-rgb),0.3)}
.card-image{position:relative;overflow:hidden;aspect-ratio:16/10;background:var(--dark-light)}
.card-image img{width:100%;height:100%;object-fit:cover;transition:transform 0.6s ease}
.tutorial-card:hover .card-image img{transform:scale(1.06)}
.card-tag{position:absolute;top:14px;left:14px;z-index:2;background:var(--primary);color:#fff;font-size:12px;font-weight:600;padding:4px 14px;border-radius:var(--radius-pill);box-shadow:0 4px 12px rgba(var(--primary-rgb),0.3)}
.card-body{padding:24px;flex:1;display:flex;flex-direction:column}
.card-body h3{font-size:18px;font-weight:700;margin-bottom:10px;color:var(--text);display:flex;align-items:center;gap:8px}
.card-body h3 i{color:var(--primary);font-size:16px}
.card-body p{font-size:14px;color:var(--text-secondary);line-height:1.65;flex:1;margin-bottom:16px}
.card-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary-dark)}
.card-link:hover{gap:10px;color:var(--primary-ddark)}

/* Tips */
.tips-section{background:var(--dark);color:#fff;position:relative;overflow:hidden}
.tips-section::before{content:'';position:absolute;top:-60px;left:-60px;width:200px;height:200px;border-radius:50%;background:rgba(var(--primary-rgb),0.15);filter:blur(60px)}
.tips-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;z-index:2}
.tip-card{background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.1);border-radius:var(--radius);padding:28px 24px;transition:var(--transition);backdrop-filter:blur(8px)}
.tip-card:hover{background:rgba(255,255,255,0.1);transform:translateY(-4px);border-color:rgba(var(--primary-rgb),0.3)}
.tip-icon{width:44px;height:44px;border-radius:12px;background:rgba(var(--primary-rgb),0.2);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:18px;margin-bottom:16px}
.tip-card h3{font-size:16px;font-weight:700;margin-bottom:8px;color:#fff}
.tip-card p{font-size:13px;color:rgba(255,255,255,0.65);line-height:1.6}

/* FAQ */
.faq-section{background:var(--bg)}
.faq-list{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:16px}
.faq-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:var(--transition)}
.faq-item:hover{border-color:rgba(var(--primary-rgb),0.3)}
.faq-item details summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:22px 28px;cursor:pointer;font-size:16px;font-weight:600;color:var(--text);list-style:none;user-select:none}
.faq-item details summary::-webkit-details-marker{display:none}
.faq-item details summary i{color:var(--primary);font-size:14px;transition:var(--transition);flex-shrink:0}
.faq-item details[open] summary i{transform:rotate(45deg)}
.faq-item details[open] summary{border-bottom:1px solid var(--border)}
.faq-item .faq-answer{padding:0 28px 22px;font-size:14px;color:var(--text-secondary);line-height:1.75}

/* CTA */
.cta-section{background:linear-gradient(135deg,var(--dark),var(--dark-light));position:relative;overflow:hidden;padding:70px 0}
.cta-section::before{content:'';position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:500px;height:500px;border-radius:50%;background:rgba(var(--primary-rgb),0.08);filter:blur(80px)}
.cta-inner{position:relative;z-index:2;text-align:center;max-width:720px;margin:0 auto}
.cta-inner h2{font-size:32px;font-weight:800;color:#fff;margin-bottom:12px}
.cta-inner p{font-size:16px;color:rgba(255,255,255,0.7);margin-bottom:32px}
.cta-btns{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}
.cta-note{display:flex;align-items:center;justify-content:center;gap:18px;margin-top:24px;flex-wrap:wrap}
.cta-note span{font-size:13px;color:rgba(255,255,255,0.5);display:inline-flex;align-items:center;gap:6px}
.cta-note span i{color:var(--success)}

/* Footer */
.site-footer{background:var(--dark);color:rgba(255,255,255,0.72);padding:60px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:48px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,0.08)}
.footer-brand .brand-logo{margin-bottom:16px}
.footer-brand p{line-height:1.7;color:rgba(255,255,255,0.55);max-width:380px}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:18px;position:relative;padding-bottom:10px}
.footer-col h4::after{content:'';position:absolute;bottom:0;left:0;width:28px;height:2px;background:var(--primary);border-radius:2px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{color:rgba(255,255,255,0.6);font-size:14px;transition:var(--transition)}
.footer-col ul a:hover{color:var(--primary);padding-left:4px}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding:22px 0;flex-wrap:wrap;gap:8px;font-size:13px;color:rgba(255,255,255,0.4)}

/* Responsive */
@media(max-width:1024px){
  .cards-grid{grid-template-columns:repeat(2,1fr)}
  .tips-grid{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .hero-content h1{font-size:36px}
}
@media(max-width:900px){
  .main-nav{position:fixed;top:var(--nav-height);left:0;right:0;background:var(--dark);flex-direction:column;padding:20px;gap:4px;transform:translateY(-130%);transition:transform 0.4s cubic-bezier(0.4,0,0.2,1);box-shadow:0 20px 40px rgba(0,0,0,0.3);border-top:1px solid rgba(255,255,255,0.06)}
  .main-nav.open{transform:translateY(0)}
  .main-nav a{width:100%;justify-content:center;padding:14px;font-size:16px}
  .nav-toggle{display:flex}
  .header-actions .badge{display:none}
}
@media(max-width:768px){
  .section{padding:52px 0}
  .section-head h2{font-size:28px}
  .hero-content h1{font-size:30px}
  .hero-content p{font-size:15px}
  .steps-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;text-align:center}
}
@media(max-width:520px){
  .container{padding:0 16px}
  .cards-grid{grid-template-columns:1fr}
  .tips-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr 1fr;gap:12px}
  .steps-grid{grid-template-columns:1fr;gap:16px}
  .step-arrow{display:none}
  .hero-content h1{font-size:26px}
  .hero-btns{flex-direction:column;align-items:stretch}
  .hero-btns .btn{width:100%}
  .cta-btns{flex-direction:column;align-items:stretch}
  .cta-btns .btn{width:100%}
  .logo-text{font-size:15px}
  .header-inner{gap:10px}
  .btn-nav{display:none}
}
@media(max-width:380px){
  .logo-text{font-size:13px}
}