/* roulang page: index */
/* ===== Design Variables ===== */
:root {
  --primary: #0b1a33;
  --primary-light: #132a4a;
  --primary-dark: #070f1e;
  --accent: #c9a84c;
  --accent-light: #e0c36a;
  --accent-dark: #a88a2e;
  --bg-light: #f5f7fa;
  --bg-white: #ffffff;
  --bg-card: #ffffff;
  --text-dark: #1a1a2e;
  --text-body: #2d3748;
  --text-muted: #6b7a8f;
  --text-white: #ffffff;
  --border-light: #e8ecf0;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.07);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.10);
  --shadow-glow: 0 0 30px rgba(201,168,76,0.15);
  --font-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --spacer-section: 80px;
  --spacer-block: 60px;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-base);
  color: var(--text-body);
  background: var(--bg-light);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-light); }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; border-radius: 4px; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }
input, textarea { font-family: inherit; font-size: 1rem; }
ul { list-style: none; }

/* ===== Container ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
@media (max-width: 768px) {
  .container { padding: 0 16px; }
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-dark);
  font-weight: 700;
  line-height: 1.25;
}
.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(201,168,76,0.10);
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 12px;
}
.section-title {
  font-size: 2rem;
  margin-bottom: 16px;
}
.section-sub {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 640px;
  margin-bottom: 40px;
}
@media (max-width: 768px) {
  .section-title { font-size: 1.6rem; }
  .section-sub { font-size: 0.95rem; }
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 32px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  transition: all var(--transition);
  border: 2px solid transparent;
}
.btn-primary {
  background: var(--accent);
  color: var(--primary-dark);
  border-color: var(--accent);
}
.btn-primary:hover {
  background: var(--accent-light);
  color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}
.btn-outline {
  background: transparent;
  color: var(--text-white);
  border-color: rgba(255,255,255,0.5);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.12);
  border-color: var(--text-white);
  color: var(--text-white);
  transform: translateY(-2px);
}
.btn-sm { padding: 8px 20px; font-size: 0.88rem; }
.btn-accent-alt {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: var(--primary-dark);
  border: none;
}
.btn-accent-alt:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(201,168,76,0.35);
  color: var(--primary-dark);
}

/* ===== Badge / Tag ===== */
.badge {
  display: inline-block;
  background: rgba(201,168,76,0.12);
  color: var(--accent-dark);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 20px;
  letter-spacing: 0.02em;
}
.badge-light {
  background: rgba(255,255,255,0.15);
  color: var(--text-white);
}

/* ===== Header & Navigation ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(11,26,51,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: background var(--transition);
}
.site-header.scrolled {
  background: rgba(11,26,51,0.98);
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}
.logo {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-white);
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 8px;
}
.logo .logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-dark);
  font-size: 1.1rem;
  font-weight: 900;
}
.logo span { color: var(--accent); }
.logo:hover { color: var(--text-white); }
.nav-list {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-list a {
  color: rgba(255,255,255,0.75);
  padding: 8px 18px;
  border-radius: 30px;
  font-size: 0.93rem;
  font-weight: 500;
  transition: all var(--transition);
  position: relative;
}
.nav-list a:hover { color: var(--text-white); background: rgba(255,255,255,0.08); }
.nav-list a.active {
  color: var(--text-white);
  background: rgba(201,168,76,0.18);
  color: var(--accent-light);
}
.nav-cta {
  background: var(--accent) !important;
  color: var(--primary-dark) !important;
  padding: 8px 22px !important;
  border-radius: 30px !important;
  font-weight: 600 !important;
}
.nav-cta:hover { background: var(--accent-light) !important; color: var(--primary-dark) !important; transform: translateY(-1px); }
.menu-toggle { display: none; color: var(--text-white); font-size: 1.6rem; padding: 4px; }
@media (max-width: 900px) {
  .nav-list { display: none; position: absolute; top: 70px; left: 0; right: 0; background: rgba(11,26,51,0.98); flex-direction: column; padding: 16px 24px; gap: 4px; border-bottom: 1px solid rgba(255,255,255,0.06); }
  .nav-list.open { display: flex; }
  .nav-list a { width: 100%; padding: 12px 16px; }
  .menu-toggle { display: block; }
}

/* ===== Hero ===== */
.hero {
  min-height: 92vh;
  display: flex;
  align-items: center;
  position: relative;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 40%, var(--primary-light) 100%);
  overflow: hidden;
  padding-top: 70px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  opacity: 0.15;
  z-index: 0;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 50%, rgba(201,168,76,0.06) 0%, transparent 60%);
  z-index: 1;
}
.hero .container { position: relative; z-index: 2; width: 100%; }
.hero-content { max-width: 720px; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(201,168,76,0.12);
  border: 1px solid rgba(201,168,76,0.20);
  color: var(--accent-light);
  padding: 6px 18px;
  border-radius: 30px;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 28px;
}
.hero h1 {
  font-size: 3.2rem;
  color: var(--text-white);
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}
.hero h1 span { color: var(--accent); }
.hero p {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.7);
  max-width: 580px;
  margin-bottom: 36px;
  line-height: 1.8;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 50px;
  padding-top: 30px;
  border-top: 1px solid rgba(255,255,255,0.08);
}
.hero-stat h3 { color: var(--text-white); font-size: 1.8rem; letter-spacing: -0.02em; }
.hero-stat h3 span { color: var(--accent); }
.hero-stat p { color: rgba(255,255,255,0.5); font-size: 0.85rem; margin-bottom: 0; }
@media (max-width: 768px) {
  .hero { min-height: 80vh; }
  .hero h1 { font-size: 2rem; }
  .hero p { font-size: 1rem; }
  .hero-stats { gap: 24px; flex-wrap: wrap; }
  .hero-stat h3 { font-size: 1.4rem; }
}

/* ===== Section Spacing ===== */
.section { padding: var(--spacer-section) 0; }
.section-dark {
  background: var(--primary);
  color: rgba(255,255,255,0.8);
}
.section-dark .section-title { color: var(--text-white); }
.section-dark .section-sub { color: rgba(255,255,255,0.6); }
.section-accent-bg {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  position: relative;
}

/* ===== Cards ===== */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: 28px 24px;
  transition: all var(--transition);
  border: 1px solid var(--border-light);
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.card-icon {
  width: 52px; height: 52px;
  background: rgba(201,168,76,0.10);
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; color: var(--accent);
  margin-bottom: 16px;
}
.card h3 { font-size: 1.15rem; margin-bottom: 8px; }
.card p { color: var(--text-muted); font-size: 0.92rem; line-height: 1.7; }
.card-link { margin-top: 14px; display: inline-flex; align-items: center; gap: 6px; font-weight: 600; font-size: 0.9rem; color: var(--accent); }

/* Grid Helpers */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
@media (max-width: 1024px) { .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 768px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; gap: 20px; } }

/* ===== Feature / Cover Cards ===== */
.feature-card { padding: 32px 28px; }
.feature-card .card-icon { width: 60px; height: 60px; border-radius: 16px; font-size: 1.6rem; }
.cover-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  border: 1px solid var(--border-light);
}
.cover-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.cover-card img { width: 100%; height: 200px; object-fit: cover; }
.cover-card-body { padding: 20px 22px 24px; }
.cover-card-body h3 { font-size: 1.1rem; margin-bottom: 6px; }
.cover-card-body p { font-size: 0.88rem; color: var(--text-muted); line-height: 1.6; }
.cover-card-body .badge { margin-bottom: 10px; }

/* ===== Latest Posts List ===== */
.post-list { display: flex; flex-direction: column; gap: 16px; }
.post-item {
  display: flex;
  align-items: center;
  gap: 20px;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: all var(--transition);
}
.post-item:hover { transform: translateX(4px); box-shadow: var(--shadow-md); }
.post-item .post-num {
  width: 40px; height: 40px;
  background: rgba(201,168,76,0.08);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; color: var(--accent); font-size: 0.9rem;
  flex-shrink: 0;
}
.post-item .post-info { flex: 1; }
.post-item .post-info h4 { font-size: 1rem; font-weight: 600; margin-bottom: 4px; }
.post-item .post-info h4 a { color: var(--text-dark); }
.post-item .post-info h4 a:hover { color: var(--accent); }
.post-item .post-meta { display: flex; gap: 16px; font-size: 0.8rem; color: var(--text-muted); }
.post-item .post-meta span { display: flex; align-items: center; gap: 4px; }
.post-empty {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 40px 24px;
  text-align: center;
  color: var(--text-muted);
  border: 1px dashed var(--border-light);
  font-size: 0.95rem;
}

/* ===== Steps / Process ===== */
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px,1fr)); gap: 32px; counter-reset: step; }
.step-item { text-align: center; position: relative; }
.step-item::before {
  counter-increment: step;
  content: counter(step);
  display: block;
  width: 48px; height: 48px;
  background: var(--accent);
  color: var(--primary-dark);
  border-radius: 50%;
  line-height: 48px;
  font-weight: 800;
  font-size: 1.2rem;
  margin: 0 auto 16px;
}
.step-item h4 { font-size: 1.05rem; margin-bottom: 6px; }
.step-item p { color: var(--text-muted); font-size: 0.9rem; line-height: 1.6; }

/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  overflow: hidden;
  transition: all var(--transition);
}
.faq-item:hover { border-color: rgba(201,168,76,0.20); }
.faq-q {
  padding: 18px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  color: var(--text-dark);
  cursor: pointer;
  font-size: 1rem;
  gap: 16px;
}
.faq-q i { color: var(--accent); transition: transform var(--transition); font-size: 0.85rem; }
.faq-item.open .faq-q i { transform: rotate(180deg); }
.faq-a {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: all 0.3s ease;
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.7;
}
.faq-item.open .faq-a { padding: 0 24px 18px; max-height: 300px; }

/* ===== CTA ===== */
.cta-wrap {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
  border-radius: var(--radius-lg);
  padding: 60px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-wrap::before {
  content: '';
  position: absolute; inset: 0;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover; background-position: center;
  opacity: 0.06;
}
.cta-wrap .container { position: relative; z-index: 2; }
.cta-wrap h2 { color: var(--text-white); font-size: 2rem; margin-bottom: 12px; }
.cta-wrap p { color: rgba(255,255,255,0.65); max-width: 520px; margin: 0 auto 28px; font-size: 1.05rem; }
.cta-wrap .btn { margin: 0 6px; }
@media (max-width: 768px) {
  .cta-wrap { padding: 40px 24px; }
  .cta-wrap h2 { font-size: 1.4rem; }
}

/* ===== Footer ===== */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255,255,255,0.6);
  padding: 48px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 36px;
}
.footer-brand .logo { font-size: 1.2rem; margin-bottom: 12px; }
.footer-brand p { font-size: 0.88rem; line-height: 1.7; max-width: 320px; }
.footer-col h4 { color: var(--text-white); font-size: 0.95rem; margin-bottom: 16px; font-weight: 600; }
.footer-col a { display: block; color: rgba(255,255,255,0.5); font-size: 0.88rem; padding: 4px 0; transition: all var(--transition); }
.footer-col a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 20px;
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 12px;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.35);
}
.footer-bottom a { color: rgba(255,255,255,0.35); }
.footer-bottom a:hover { color: var(--accent); }
@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* ===== Misc ===== */
.text-center { text-align: center; }
.mt-1 { margin-top: 12px; }
.mt-2 { margin-top: 24px; }
.mb-1 { margin-bottom: 12px; }
.mb-2 { margin-bottom: 24px; }
.gap-1 { gap: 12px; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-wrap { flex-wrap: wrap; }
.relative { position: relative; }
.overflow-hidden { overflow: hidden; }

/* ===== Section: Category Intro ===== */
.cat-intro-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}
.cat-intro-img img { border-radius: var(--radius-md); width: 100%; height: 320px; object-fit: cover; }
.cat-intro-text h3 { font-size: 1.6rem; margin-bottom: 12px; }
.cat-intro-text p { color: var(--text-muted); line-height: 1.8; margin-bottom: 20px; }
@media (max-width: 768px) {
  .cat-intro-wrap { grid-template-columns: 1fr; }
  .cat-intro-img img { height: 220px; }
}

/* ===== Section: Numbers ===== */
.numbers-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.num-item { text-align: center; padding: 24px 12px; }
.num-item .num { font-size: 2.4rem; font-weight: 800; color: var(--accent); line-height: 1.2; }
.num-item .num-label { font-size: 0.9rem; color: rgba(255,255,255,0.65); margin-top: 6px; }
@media (max-width: 900px) { .numbers-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .numbers-grid { grid-template-columns: 1fr 1fr; } }

/* ===== Section: Features Alt ===== */
.features-alt { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.feature-alt-item {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  text-align: center;
  border: 1px solid var(--border-light);
  transition: all var(--transition);
}
.feature-alt-item:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.feature-alt-item .alt-icon {
  width: 64px; height: 64px;
  margin: 0 auto 16px;
  background: linear-gradient(135deg, rgba(201,168,76,0.12), rgba(201,168,76,0.04));
  border-radius: 20px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem; color: var(--accent);
}
.feature-alt-item h4 { font-size: 1.1rem; margin-bottom: 8px; }
.feature-alt-item p { color: var(--text-muted); font-size: 0.9rem; line-height: 1.7; }
@media (max-width: 768px) { .features-alt { grid-template-columns: 1fr; } }

/* ===== Cover Cards Grid ===== */
.cover-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
@media (max-width: 900px) { .cover-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .cover-grid { grid-template-columns: 1fr; } }

/* ===== Section Divider ===== */
.section-divider {
  width: 60px; height: 3px;
  background: var(--accent);
  border-radius: 4px;
  margin: 0 auto 20px;
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-light); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 10px; }

/* ===== Animations ===== */
@keyframes fadeUp { from { opacity:0; transform:translateY(24px); } to { opacity:1; transform:translateY(0); } }
.anim-fade-up { animation: fadeUp 0.7s ease forwards; }
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }

/* roulang page: article */
/* ===== 设计变量 ===== */
:root {
  --primary: #1a3a5c;
  --primary-light: #2a5a8c;
  --primary-lighter: #3a7ab8;
  --primary-dark: #0f2640;
  --accent: #e8a832;
  --accent-light: #f0c060;
  --accent-dark: #c88a1e;
  --accent-gradient: linear-gradient(135deg, #e8a832 0%, #d4922a 100%);
  --bg-body: #f7f8fa;
  --bg-white: #ffffff;
  --bg-card: #ffffff;
  --bg-section-alt: #f0f2f5;
  --bg-dark: #0f2640;
  --text-primary: #1a2a3a;
  --text-secondary: #4a5a6a;
  --text-muted: #8a9aaa;
  --text-white: #ffffff;
  --text-accent: #e8a832;
  --border: #e2e6ea;
  --border-light: #f0f2f5;
  --shadow-sm: 0 2px 8px rgba(26, 58, 92, 0.06);
  --shadow-md: 0 6px 24px rgba(26, 58, 92, 0.10);
  --shadow-lg: 0 12px 40px rgba(26, 58, 92, 0.14);
  --shadow-accent: 0 6px 24px rgba(232, 168, 50, 0.25);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --container: 1200px;
  --header-height: 72px;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-primary);
  background: var(--bg-body);
  overflow-x: hidden;
}
a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button, input, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
button { cursor: pointer; background: none; }
h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.25; color: var(--text-primary); }
h1 { font-size: 2.4rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.4rem; }
h4 { font-size: 1.15rem; }
p { margin-bottom: 1rem; color: var(--text-secondary); }
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* ===== Header / Nav ===== */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255,255,255,0.95); backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border); height: var(--header-height);
  transition: var(--transition);
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; height: 100%; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 1.35rem; font-weight: 800; color: var(--primary); letter-spacing: -0.5px; }
.logo i { color: var(--accent); font-size: 1.6rem; }
.logo span { background: var(--accent-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.nav-list { display: flex; align-items: center; gap: 6px; }
.nav-list a { position: relative; padding: 8px 18px; font-size: 0.92rem; font-weight: 500; color: var(--text-secondary); border-radius: var(--radius-sm); transition: var(--transition); }
.nav-list a::after { content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%); width: 0; height: 2px; background: var(--accent); border-radius: 2px; transition: var(--transition); }
.nav-list a:hover { color: var(--primary); background: rgba(26,58,92,0.06); }
.nav-list a:hover::after { width: 60%; }
.nav-list a.active { color: var(--primary); background: rgba(232,168,50,0.12); }
.nav-list a.active::after { width: 60%; background: var(--accent); }
.nav-cta { background: var(--accent-gradient) !important; color: #fff !important; padding: 10px 24px !important; border-radius: var(--radius-sm) !important; font-weight: 600 !important; box-shadow: var(--shadow-accent); }
.nav-cta::after { display: none !important; }
.nav-cta:hover { transform: translateY(-1px); box-shadow: 0 8px 28px rgba(232,168,50,0.35) !important; color: #fff !important; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; cursor: pointer; background: none; border: none; }
.nav-toggle span { display: block; width: 26px; height: 2.5px; background: var(--primary); border-radius: 3px; transition: var(--transition); }

/* ===== Article Hero ===== */
.article-hero {
  margin-top: var(--header-height);
  padding: 60px 0 40px;
  background: var(--bg-dark);
  position: relative;
  overflow: hidden;
}
.article-hero::before {
  content: '';
  position: absolute; inset: 0;
  background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity: 0.12;
  pointer-events: none;
}
.article-hero .container { position: relative; z-index: 1; }
.article-hero .breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 0.85rem; color: rgba(255,255,255,0.6); margin-bottom: 20px; }
.article-hero .breadcrumb a { color: rgba(255,255,255,0.7); }
.article-hero .breadcrumb a:hover { color: var(--accent); }
.article-hero .breadcrumb i { font-size: 0.7rem; }
.article-category-badge { display: inline-block; padding: 4px 16px; background: var(--accent-gradient); color: #fff; border-radius: 20px; font-size: 0.8rem; font-weight: 600; margin-bottom: 16px; }
.article-hero h1 { color: #fff; font-size: 2.2rem; max-width: 900px; margin-bottom: 16px; line-height: 1.3; }
.article-meta { display: flex; align-items: center; gap: 20px; color: rgba(255,255,255,0.6); font-size: 0.88rem; flex-wrap: wrap; }
.article-meta i { margin-right: 6px; color: var(--accent); }

/* ===== Main Content ===== */
.article-main { padding: 48px 0 64px; }
.article-layout { display: grid; grid-template-columns: 1fr 320px; gap: 48px; }
.article-content { background: #fff; border-radius: var(--radius-lg); padding: 40px; box-shadow: var(--shadow-sm); border: 1px solid var(--border); }
.article-content .featured-image { width: 100%; border-radius: var(--radius-md); margin-bottom: 32px; max-height: 480px; object-fit: cover; }
.article-body { font-size: 1.05rem; line-height: 1.85; color: var(--text-primary); }
.article-body p { margin-bottom: 1.2rem; }
.article-body h2 { font-size: 1.6rem; margin: 36px 0 16px; color: var(--primary); }
.article-body h3 { font-size: 1.25rem; margin: 28px 0 12px; color: var(--primary-light); }
.article-body ul, .article-body ol { margin: 16px 0 20px; padding-left: 24px; }
.article-body li { margin-bottom: 8px; color: var(--text-secondary); list-style: disc; }
.article-body blockquote { border-left: 4px solid var(--accent); padding: 16px 24px; margin: 24px 0; background: rgba(232,168,50,0.06); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; color: var(--text-secondary); font-style: italic; }
.article-body a { color: var(--primary-lighter); text-decoration: underline; }
.article-body a:hover { color: var(--accent); }

/* ===== Sidebar ===== */
.article-sidebar { display: flex; flex-direction: column; gap: 32px; }
.sidebar-card { background: #fff; border-radius: var(--radius-md); padding: 28px; box-shadow: var(--shadow-sm); border: 1px solid var(--border); }
.sidebar-card h3 { font-size: 1.1rem; margin-bottom: 18px; color: var(--primary); display: flex; align-items: center; gap: 10px; }
.sidebar-card h3 i { color: var(--accent); }
.sidebar-related { display: flex; flex-direction: column; gap: 14px; }
.sidebar-related a { display: flex; gap: 14px; padding: 10px 0; border-bottom: 1px solid var(--border-light); transition: var(--transition); }
.sidebar-related a:last-child { border-bottom: none; }
.sidebar-related a:hover { padding-left: 6px; }
.sidebar-related img { width: 70px; height: 52px; border-radius: 6px; object-fit: cover; flex-shrink: 0; background: var(--bg-section-alt); }
.sidebar-related .info { flex: 1; }
.sidebar-related .info .tit { font-size: 0.92rem; font-weight: 600; color: var(--text-primary); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 4px; }
.sidebar-related .info .date { font-size: 0.78rem; color: var(--text-muted); }
.sidebar-cta { text-align: center; padding: 32px 24px; background: var(--accent-gradient); color: #fff; border-radius: var(--radius-md); border: none; }
.sidebar-cta h3 { color: #fff; font-size: 1.2rem; margin-bottom: 8px; }
.sidebar-cta p { color: rgba(255,255,255,0.85); font-size: 0.92rem; margin-bottom: 20px; }
.sidebar-cta .btn-white { display: inline-block; padding: 12px 32px; background: #fff; color: var(--primary); border-radius: var(--radius-sm); font-weight: 600; transition: var(--transition); }
.sidebar-cta .btn-white:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.15); color: var(--primary); }

/* ===== Article Footer / Tags ===== */
.article-footer { margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
.article-tags { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.article-tags span { padding: 4px 14px; background: var(--bg-section-alt); border-radius: 20px; font-size: 0.8rem; color: var(--text-secondary); }
.article-share { display: flex; align-items: center; gap: 10px; }
.article-share a { display: flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: 50%; background: var(--bg-section-alt); color: var(--text-secondary); transition: var(--transition); }
.article-share a:hover { background: var(--accent); color: #fff; transform: translateY(-2px); }

/* ===== CTA Section ===== */
.article-cta { padding: 64px 0; background: var(--bg-dark); position: relative; overflow: hidden; }
.article-cta::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-3.png') center/cover no-repeat; opacity: 0.08; pointer-events: none; }
.article-cta .container { position: relative; z-index: 1; text-align: center; }
.article-cta h2 { color: #fff; font-size: 2rem; margin-bottom: 12px; }
.article-cta p { color: rgba(255,255,255,0.7); font-size: 1.05rem; max-width: 620px; margin: 0 auto 28px; }
.article-cta .btn-group { display: flex; align-items: center; justify-content: center; gap: 16px; flex-wrap: wrap; }
.btn-primary, .btn-outline { padding: 14px 36px; border-radius: var(--radius-sm); font-weight: 600; font-size: 1rem; transition: var(--transition); display: inline-flex; align-items: center; gap: 10px; }
.btn-primary { background: var(--accent-gradient); color: #fff; box-shadow: var(--shadow-accent); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 32px rgba(232,168,50,0.4); color: #fff; }
.btn-outline { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.3); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }

/* ===== Footer ===== */
.site-footer { background: var(--primary-dark); color: rgba(255,255,255,0.7); padding: 48px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 32px; }
.footer-brand .logo { color: #fff; margin-bottom: 12px; }
.footer-brand p { color: rgba(255,255,255,0.6); font-size: 0.92rem; max-width: 320px; }
.footer-col h4 { color: #fff; font-size: 1rem; margin-bottom: 16px; }
.footer-col a { display: block; padding: 4px 0; font-size: 0.9rem; color: rgba(255,255,255,0.6); transition: var(--transition); }
.footer-col a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 20px; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: 0.85rem; color: rgba(255,255,255,0.5); }
.footer-bottom a { color: rgba(255,255,255,0.5); }

/* ===== Error State ===== */
.article-error { text-align: center; padding: 80px 24px; }
.article-error i { font-size: 4rem; color: var(--text-muted); margin-bottom: 20px; }
.article-error h2 { font-size: 1.8rem; color: var(--text-primary); margin-bottom: 12px; }
.article-error p { color: var(--text-secondary); margin-bottom: 24px; }
.article-error .btn-back { display: inline-flex; align-items: center; gap: 8px; padding: 12px 32px; background: var(--primary); color: #fff; border-radius: var(--radius-sm); font-weight: 600; transition: var(--transition); }
.article-error .btn-back:hover { background: var(--primary-light); transform: translateY(-2px); color: #fff; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .article-layout { grid-template-columns: 1fr; gap: 32px; }
  .article-hero h1 { font-size: 1.9rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 768px) {
  .nav-list { position: fixed; top: var(--header-height); left: 0; right: 0; background: #fff; flex-direction: column; padding: 20px 24px; gap: 4px; border-bottom: 1px solid var(--border); box-shadow: var(--shadow-md); transform: translateY(-120%); opacity: 0; pointer-events: none; transition: var(--transition); }
  .nav-list.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-list a { width: 100%; padding: 12px 16px; }
  .nav-toggle { display: flex; }
  .article-hero { padding: 40px 0 28px; }
  .article-hero h1 { font-size: 1.6rem; }
  .article-content { padding: 24px; }
  .article-main { padding: 32px 0; }
  h2 { font-size: 1.5rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .article-cta h2 { font-size: 1.5rem; }
  .article-meta { gap: 12px; font-size: 0.82rem; }
  .sidebar-card { padding: 20px; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .article-hero h1 { font-size: 1.35rem; }
  .article-content { padding: 16px; }
  .article-body { font-size: 0.98rem; }
  .btn-primary, .btn-outline { padding: 12px 24px; font-size: 0.92rem; }
  .article-cta { padding: 40px 0; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .site-header .container { padding: 0 16px; }
  .article-meta { flex-direction: column; align-items: flex-start; gap: 6px; }
}

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a3a6b;
            --primary-light: #2a5a9e;
            --primary-dark: #0f2345;
            --accent: #e8a838;
            --accent-light: #f0c060;
            --accent-dark: #c88a20;
            --bg-white: #ffffff;
            --bg-light: #f7f9fc;
            --bg-dark: #0f2345;
            --bg-gray: #f0f2f5;
            --text-dark: #1a1a2e;
            --text-body: #3d4050;
            --text-light: #6e7280;
            --text-white: #ffffff;
            --border: #e2e6ec;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.08);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.12);
            --shadow-xl: 0 24px 64px rgba(0,0,0,0.16);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::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: 1.7;
            color: var(--text-body);
            background: var(--bg-white);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        a:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        button, input, select, textarea { font-family: inherit; font-size: 1rem; transition: var(--transition); }
        button { cursor: pointer; border: none; background: none; }
        button:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { color: var(--text-dark); line-height: 1.3; font-weight: 700; }
        h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
        h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
        h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); }
        h4 { font-size: 1.1rem; }
        p { margin-bottom: 1rem; }
        .container { max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 12px 28px; border-radius: 50px;
            font-weight: 600; font-size: 0.95rem;
            transition: var(--transition); border: 2px solid transparent;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--accent); color: var(--text-dark); border-color: var(--accent);
        }
        .btn-primary:hover {
            background: var(--accent-light); border-color: var(--accent-light);
            transform: translateY(-2px); box-shadow: 0 8px 24px rgba(232,168,56,0.35);
        }
        .btn-primary:active { transform: translateY(0); box-shadow: none; }
        .btn-outline {
            background: transparent; color: var(--text-white); border-color: var(--text-white);
        }
        .btn-outline:hover {
            background: var(--text-white); color: var(--primary);
            transform: translateY(-2px); box-shadow: 0 8px 24px rgba(255,255,255,0.25);
        }
        .btn-outline:active { transform: translateY(0); }
        .btn-dark {
            background: var(--primary); color: var(--text-white); border-color: var(--primary);
        }
        .btn-dark:hover {
            background: var(--primary-light); border-color: var(--primary-light);
            transform: translateY(-2px); box-shadow: 0 8px 24px rgba(26,58,107,0.3);
        }
        .btn-lg { padding: 16px 40px; font-size: 1.05rem; }
        .btn-sm { padding: 8px 20px; font-size: 0.85rem; }

        /* ===== Header & Nav ===== */
        .site-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(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }
        .site-header.scrolled { box-shadow: var(--shadow-md); }
        .header-inner {
            display: flex; align-items: center; justify-content: space-between;
            height: 100%; max-width: var(--container-max); margin: 0 auto; padding: 0 24px;
        }
        .site-logo {
            font-size: 1.35rem; font-weight: 800; color: var(--primary);
            letter-spacing: -0.5px; display: flex; align-items: center; gap: 10px;
            flex-shrink: 0;
        }
        .site-logo i { color: var(--accent); font-size: 1.5rem; }
        .site-logo span { background: linear-gradient(135deg, var(--primary), var(--primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .nav-list { display: flex; align-items: center; gap: 6px; }
        .nav-list a {
            padding: 8px 18px; border-radius: 50px; font-weight: 500;
            font-size: 0.92rem; color: var(--text-body); transition: var(--transition);
            position: relative; white-space: nowrap;
        }
        .nav-list a:hover { color: var(--primary); background: var(--bg-light); }
        .nav-list a.active {
            color: var(--primary); background: rgba(26,58,107,0.08); font-weight: 600;
        }
        .nav-list a.active::after {
            content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%);
            width: 20px; height: 3px; border-radius: 2px; background: var(--accent);
        }
        .nav-list a.nav-cta {
            background: var(--accent); color: var(--text-dark); font-weight: 700;
            padding: 10px 24px; border: 2px solid var(--accent);
        }
        .nav-list a.nav-cta:hover {
            background: var(--accent-light); border-color: var(--accent-light);
            transform: translateY(-2px); box-shadow: 0 6px 20px rgba(232,168,56,0.35);
        }
        .nav-toggle {
            display: none; flex-direction: column; gap: 5px; padding: 4px; cursor: pointer;
            background: none; border: none;
        }
        .nav-toggle span {
            display: block; width: 26px; height: 2.5px; background: var(--text-dark);
            border-radius: 2px; transition: var(--transition);
        }
        .nav-toggle.active span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
        .nav-toggle.active span:nth-child(2) { opacity: 0; }
        .nav-toggle.active span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

        /* ===== Hero / Banner ===== */
        .page-banner {
            padding: calc(var(--header-height) + 60px) 0 80px;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            position: relative; overflow: hidden; min-height: 340px;
            display: flex; align-items: center;
        }
        .page-banner::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.12; mix-blend-mode: overlay;
        }
        .page-banner::after {
            content: ''; position: absolute; inset: 0;
            background: radial-gradient(ellipse at 20% 80%, rgba(232,168,56,0.15) 0%, transparent 50%);
        }
        .banner-content { position: relative; z-index: 2; text-align: center; }
        .banner-content h1 {
            color: var(--text-white); margin-bottom: 16px;
            text-shadow: 0 2px 20px rgba(0,0,0,0.2);
        }
        .banner-content p {
            color: rgba(255,255,255,0.85); font-size: 1.1rem; max-width: 680px;
            margin: 0 auto 24px; line-height: 1.8;
        }
        .banner-meta {
            display: flex; justify-content: center; gap: 24px; flex-wrap: wrap;
            color: rgba(255,255,255,0.7); font-size: 0.9rem;
        }
        .banner-meta i { margin-right: 6px; color: var(--accent); }

        /* ===== Section Shared ===== */
        .section { padding: 80px 0; }
        .section-alt { background: var(--bg-light); }
        .section-dark { background: var(--bg-dark); color: var(--text-white); }
        .section-title {
            text-align: center; margin-bottom: 48px;
        }
        .section-title h2 { margin-bottom: 12px; }
        .section-title p { color: var(--text-light); max-width: 600px; margin: 0 auto; font-size: 1.05rem; }
        .section-dark .section-title h2 { color: var(--text-white); }
        .section-dark .section-title p { color: rgba(255,255,255,0.65); }

        /* ===== Card Grid ===== */
        .card-grid {
            display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }
        .card {
            background: var(--bg-white); border-radius: var(--radius-md);
            overflow: hidden; transition: var(--transition);
            border: 1px solid var(--border); box-shadow: var(--shadow-sm);
        }
        .card:hover {
            transform: translateY(-6px); box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .card-img { width: 100%; height: 200px; object-fit: cover; border-radius: 0; }
        .card-body { padding: 24px; }
        .card-body h3 { margin-bottom: 8px; font-size: 1.15rem; }
        .card-body h3 a { color: var(--text-dark); }
        .card-body h3 a:hover { color: var(--primary); }
        .card-body p { color: var(--text-light); font-size: 0.92rem; line-height: 1.6; margin-bottom: 12px; }
        .card-tag {
            display: inline-block; padding: 4px 12px; border-radius: 50px;
            background: rgba(232,168,56,0.12); color: var(--accent-dark);
            font-size: 0.78rem; font-weight: 600; margin-right: 6px; margin-bottom: 6px;
        }
        .card-footer {
            padding: 16px 24px; border-top: 1px solid var(--border);
            display: flex; align-items: center; justify-content: space-between;
            font-size: 0.85rem; color: var(--text-light);
        }
        .card-footer a { color: var(--primary); font-weight: 500; }
        .card-footer a:hover { color: var(--accent); }

        /* ===== Guide Subcategories ===== */
        .subcat-grid {
            display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
            gap: 20px;
        }
        .subcat-card {
            background: var(--bg-white); border-radius: var(--radius-md);
            padding: 28px 24px; text-align: center;
            border: 1px solid var(--border); transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .subcat-card:hover {
            transform: translateY(-4px); box-shadow: var(--shadow-md);
            border-color: var(--accent);
        }
        .subcat-card i {
            font-size: 2.2rem; color: var(--accent); margin-bottom: 16px;
            background: rgba(232,168,56,0.1); padding: 16px; border-radius: 50%;
        }
        .subcat-card h4 { margin-bottom: 6px; font-size: 1.05rem; }
        .subcat-card p { font-size: 0.85rem; color: var(--text-light); margin-bottom: 0; }

        /* ===== Steps / Process ===== */
        .steps-grid {
            display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
            counter-reset: step;
        }
        .step-item {
            text-align: center; padding: 32px 20px; position: relative;
            background: var(--bg-white); border-radius: var(--radius-md);
            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-item::before {
            counter-increment: step; content: counter(step);
            display: block; width: 48px; height: 48px; line-height: 48px;
            border-radius: 50%; background: var(--accent); color: var(--text-dark);
            font-size: 1.2rem; font-weight: 800; margin: 0 auto 16px;
        }
        .step-item h4 { margin-bottom: 8px; font-size: 1.05rem; }
        .step-item p { font-size: 0.88rem; color: var(--text-light); margin-bottom: 0; }
        .step-item:not(:last-child)::after {
            content: '\f054'; font-family: 'Font Awesome 6 Free'; font-weight: 900;
            position: absolute; right: -16px; top: 50%; transform: translateY(-50%);
            color: var(--accent); font-size: 1rem; opacity: 0.5;
        }

        /* ===== Stats ===== */
        .stats-grid {
            display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
        }
        .stat-item {
            text-align: center; padding: 32px 16px;
            background: rgba(255,255,255,0.05); border-radius: var(--radius-md);
            border: 1px solid rgba(255,255,255,0.1); backdrop-filter: blur(4px);
        }
        .stat-item .num {
            font-size: 2.4rem; font-weight: 800; color: var(--accent);
            line-height: 1.2; margin-bottom: 6px;
        }
        .stat-item .label { font-size: 0.9rem; color: rgba(255,255,255,0.7); }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            border: 1px solid var(--border); border-radius: var(--radius-md);
            overflow: hidden; transition: var(--transition);
            background: var(--bg-white);
        }
        .faq-item:hover { border-color: var(--accent); box-shadow: var(--shadow-sm); }
        .faq-question {
            padding: 20px 24px; display: flex; justify-content: space-between;
            align-items: center; font-weight: 600; color: var(--text-dark);
            cursor: pointer; transition: var(--transition); user-select: none;
            font-size: 1rem;
        }
        .faq-question:hover { background: var(--bg-light); }
        .faq-question i { color: var(--accent); transition: var(--transition); font-size: 0.9rem; }
        .faq-item.active .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 24px; max-height: 0; overflow: hidden;
            transition: var(--transition); color: var(--text-light); font-size: 0.92rem; line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            padding: 0 24px 20px; max-height: 300px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            position: relative; overflow: hidden;
        }
        .cta-section::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.08; mix-blend-mode: overlay;
        }
        .cta-content { position: relative; z-index: 2; text-align: center; }
        .cta-content h2 { color: var(--text-white); margin-bottom: 12px; }
        .cta-content p { color: rgba(255,255,255,0.8); max-width: 560px; margin: 0 auto 28px; font-size: 1.05rem; }
        .cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark); color: rgba(255,255,255,0.7);
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px; margin-bottom: 32px;
        }
        .footer-brand .site-logo { margin-bottom: 12px; }
        .footer-brand .site-logo span { -webkit-text-fill-color: var(--text-white); }
        .footer-brand p { font-size: 0.88rem; line-height: 1.7; max-width: 360px; }
        .footer-col h5 { color: var(--text-white); margin-bottom: 16px; font-size: 1rem; }
        .footer-col a {
            display: block; padding: 6px 0; font-size: 0.88rem;
            color: rgba(255,255,255,0.6); transition: var(--transition);
        }
        .footer-col a:hover { color: var(--accent); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 20px; display: flex; justify-content: space-between;
            align-items: center; flex-wrap: wrap; gap: 12px;
            font-size: 0.85rem; color: rgba(255,255,255,0.4);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            display: flex; align-items: center; gap: 8px; font-size: 0.88rem;
            color: rgba(255,255,255,0.6); margin-bottom: 16px; justify-content: center;
        }
        .breadcrumb a { color: rgba(255,255,255,0.7); }
        .breadcrumb a:hover { color: var(--accent); }
        .breadcrumb i { font-size: 0.7rem; color: rgba(255,255,255,0.4); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .steps-grid { grid-template-columns: repeat(2, 1fr); }
            .steps-grid .step-item:nth-child(2)::after { display: none; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }

        @media (max-width: 768px) {
            :root { --header-height: 64px; }
            .nav-list {
                position: fixed; top: var(--header-height); left: 0; right: 0;
                background: var(--bg-white); flex-direction: column;
                padding: 16px 24px 24px; gap: 4px;
                border-bottom: 1px solid var(--border);
                transform: translateY(-110%); opacity: 0; pointer-events: none;
                transition: var(--transition); box-shadow: var(--shadow-lg);
            }
            .nav-list.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
            .nav-list a { width: 100%; text-align: center; padding: 12px 18px; }
            .nav-list a.active::after { display: none; }
            .nav-list a.nav-cta { margin-top: 8px; }
            .nav-toggle { display: flex; }

            .page-banner { padding: calc(var(--header-height) + 40px) 0 60px; min-height: 280px; }
            .banner-content p { font-size: 1rem; }
            .banner-meta { flex-direction: column; gap: 8px; align-items: center; }

            .section { padding: 56px 0; }
            .section-title { margin-bottom: 32px; }

            .card-grid { grid-template-columns: 1fr; }
            .subcat-grid { grid-template-columns: repeat(2, 1fr); }
            .steps-grid { grid-template-columns: 1fr; }
            .steps-grid .step-item::after { display: none !important; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
            .stat-item { padding: 20px 12px; }
            .stat-item .num { font-size: 1.8rem; }

            .faq-question { font-size: 0.92rem; padding: 16px 18px; }
            .faq-answer { font-size: 0.88rem; padding: 0 18px; }
            .faq-item.active .faq-answer { padding: 0 18px 16px; }

            .cta-section { padding: 56px 0; }
            .cta-buttons .btn { width: 100%; justify-content: center; }

            .footer-grid { grid-template-columns: 1fr; gap: 24px; text-align: center; }
            .footer-brand p { margin: 0 auto; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .subcat-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: 1fr 1fr; }
            .stat-item .num { font-size: 1.5rem; }
            .site-logo { font-size: 1.1rem; }
            .btn-lg { padding: 14px 28px; font-size: 0.95rem; }
        }

        /* ===== Utility ===== */
        .text-accent { color: var(--accent); }
        .mt-12 { margin-top: 12px; }
        .mb-12 { margin-bottom: 12px; }
        .gap-8 { gap: 8px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }