/* roulang page: index */
:root {
  --primary: #1a2a6c;
  --primary-light: #2c3e8a;
  --primary-dark: #0f1b4a;
  --accent: #e63946;
  --accent-light: #ff5a67;
  --accent-dark: #c92a36;
  --gold: #f0a500;
  --gold-light: #ffc107;
  --bg: #f5f6fa;
  --bg-white: #ffffff;
  --bg-dark: #0d152e;
  --bg-card: #ffffff;
  --text: #1a1a2e;
  --text-light: #5a5a7a;
  --text-white: #f8f9fa;
  --border: #e2e5f0;
  --shadow: 0 4px 24px rgba(26, 42, 108, 0.08);
  --shadow-hover: 0 12px 40px rgba(26, 42, 108, 0.16);
  --radius: 16px;
  --radius-sm: 8px;
  --radius-lg: 24px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  --max-width: 1200px;
  --header-h: 72px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent); }
a:focus-visible { outline: 3px solid var(--gold); outline-offset: 2px; border-radius: 4px; }

img { max-width: 100%; height: auto; display: block; }
button, input, textarea { font-family: var(--font); font-size: 1rem; border: none; outline: none; }
button { cursor: pointer; background: none; }
button:focus-visible { outline: 3px solid var(--gold); outline-offset: 2px; border-radius: 4px; }

ul, ol { list-style: none; }

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

/* ===== Header / Nav ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  background: rgba(13, 21, 46, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(240, 165, 0, 0.15);
  z-index: 1000;
  transition: var(--transition);
}

.header.scrolled { background: rgba(13, 21, 46, 0.98); box-shadow: 0 4px 30px rgba(0,0,0,0.3); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-white);
  letter-spacing: 0.5px;
  flex-shrink: 0;
}

.logo i { color: var(--gold); font-size: 1.6rem; }
.logo span { background: linear-gradient(135deg, #fff 40%, var(--gold-light) 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

.nav { display: flex; align-items: center; gap: 8px; }

.nav a {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: 40px;
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255,255,255,0.75);
  transition: var(--transition);
  position: relative;
  white-space: nowrap;
}

.nav a:hover, .nav a.active { color: #fff; background: rgba(240, 165, 0, 0.15); }
.nav a.active { background: rgba(240, 165, 0, 0.2); color: var(--gold-light); }
.nav a i { font-size: 0.85rem; }

.nav-cta {
  padding: 8px 22px !important;
  background: linear-gradient(135deg, var(--gold), #d4940a) !important;
  color: #0d152e !important;
  font-weight: 700 !important;
  border-radius: 40px !important;
  box-shadow: 0 4px 16px rgba(240, 165, 0, 0.3);
  transition: var(--transition) !important;
}

.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(240, 165, 0, 0.45) !important; color: #0d152e !important; }

.mobile-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; cursor: pointer; background: none; border: none; }
.mobile-toggle span { display: block; width: 26px; height: 2.5px; background: #fff; border-radius: 4px; transition: var(--transition); }
.mobile-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.mobile-toggle.active span:nth-child(2) { opacity: 0; }
.mobile-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ===== Hero ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  background: var(--bg-dark);
  padding: 120px 0 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  opacity: 0.35;
  transform: scale(1.05);
  animation: heroZoom 20s ease-in-out infinite alternate;
}

@keyframes heroZoom { 0% { transform: scale(1.05); } 100% { transform: scale(1.12); } }

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(13,21,46,0.92) 30%, rgba(26,42,108,0.7) 70%, rgba(230,57,70,0.25) 100%);
}

.hero-content { position: relative; z-index: 2; width: 100%; }

.hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }

.hero-text { padding-right: 20px; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  background: rgba(240, 165, 0, 0.15);
  border: 1px solid rgba(240, 165, 0, 0.3);
  border-radius: 40px;
  color: var(--gold-light);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 24px;
  text-transform: uppercase;
}

.hero-badge i { font-size: 0.7rem; }

.hero-title {
  font-size: 3.2rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

.hero-title em { font-style: normal; background: linear-gradient(135deg, var(--gold-light), var(--gold)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

.hero-desc {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.7);
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 560px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 34px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  transition: var(--transition);
  border: none;
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--gold), #d4940a);
  color: #0d152e;
  box-shadow: 0 4px 20px rgba(240, 165, 0, 0.35);
}

.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 10px 36px rgba(240, 165, 0, 0.5); color: #0d152e; }

.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.3);
}

.btn-outline:hover { border-color: var(--gold); color: var(--gold); transform: translateY(-3px); }

.btn-accent {
  background: linear-gradient(135deg, var(--accent), #b71c2e);
  color: #fff;
  box-shadow: 0 4px 20px rgba(230, 57, 70, 0.35);
}

.btn-accent:hover { transform: translateY(-3px); box-shadow: 0 10px 36px rgba(230, 57, 70, 0.5); color: #fff; }

.btn-sm { padding: 10px 22px; font-size: 0.85rem; }

.hero-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 40px; }

.hero-stat { text-align: center; padding: 20px 16px; background: rgba(255,255,255,0.06); border-radius: var(--radius); border: 1px solid rgba(255,255,255,0.08); backdrop-filter: blur(10px); }

.hero-stat-num { font-size: 2rem; font-weight: 800; color: var(--gold-light); line-height: 1.2; }
.hero-stat-label { font-size: 0.8rem; color: rgba(255,255,255,0.55); margin-top: 4px; }

.hero-visual { position: relative; display: flex; justify-content: center; align-items: center; }

.hero-img-wrap {
  position: relative;
  width: 100%;
  max-width: 480px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
  border: 1px solid rgba(255,255,255,0.08);
}

.hero-img-wrap img { width: 100%; height: auto; display: block; transition: var(--transition); }
.hero-img-wrap:hover img { transform: scale(1.03); }

.hero-img-tag {
  position: absolute;
  top: 20px;
  right: 20px;
  padding: 6px 16px;
  background: var(--accent);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: 30px;
  letter-spacing: 0.5px;
  box-shadow: 0 4px 16px rgba(230,57,70,0.4);
}

/* ===== Section ===== */
.section { padding: 80px 0; }
.section-dark { background: var(--bg-dark); }
.section-alt { background: var(--bg-white); }

.section-header { text-align: center; margin-bottom: 52px; }

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 16px;
  background: rgba(230, 57, 70, 0.08);
  border-radius: 40px;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1.25;
  margin-bottom: 12px;
}

.section-dark .section-title { color: #fff; }

.section-desc {
  font-size: 1.05rem;
  color: var(--text-light);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.8;
}

.section-dark .section-desc { color: rgba(255,255,255,0.6); }

.section-line {
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--gold), var(--accent));
  border-radius: 4px;
  margin: 16px auto 0;
}

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

.feature-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 36px 28px;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--border);
  text-align: center;
}

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

.feature-icon {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin: 0 auto 20px;
  color: #fff;
}

.feature-icon.blue { background: linear-gradient(135deg, var(--primary), var(--primary-light)); }
.feature-icon.red { background: linear-gradient(135deg, var(--accent), var(--accent-light)); }
.feature-icon.gold { background: linear-gradient(135deg, var(--gold), #d4940a); }

.feature-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 10px; color: var(--text); }
.feature-card p { font-size: 0.92rem; color: var(--text-light); line-height: 1.7; }

/* ===== Category ===== */
.category-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }

.category-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  background: var(--bg-card);
  border: 1px solid var(--border);
}

.category-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }

.category-card-inner { display: flex; align-items: center; padding: 28px; gap: 24px; }

.category-img {
  width: 160px;
  height: 120px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  flex-shrink: 0;
  background: #eef0f7;
}

.category-info { flex: 1; }

.category-info h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 6px; color: var(--text); }
.category-info p { font-size: 0.9rem; color: var(--text-light); line-height: 1.6; margin-bottom: 12px; }

.category-meta { display: flex; align-items: center; gap: 16px; font-size: 0.8rem; color: var(--text-light); }

.category-meta i { margin-right: 4px; }

.category-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 18px;
  background: rgba(240, 165, 0, 0.1);
  color: var(--gold);
  border-radius: 30px;
  font-size: 0.8rem;
  font-weight: 600;
  transition: var(--transition);
}

.category-link:hover { background: var(--gold); color: #0d152e; }

/* ===== Latest Posts (CMS) ===== */
.posts-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }

.post-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
}

.post-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: rgba(240, 165, 0, 0.3); }

.post-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: #eef0f7;
  display: block;
}

.post-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }

.post-cat {
  display: inline-block;
  padding: 3px 12px;
  background: rgba(230, 57, 70, 0.08);
  color: var(--accent);
  font-size: 0.7rem;
  font-weight: 700;
  border-radius: 20px;
  margin-bottom: 10px;
  width: fit-content;
  letter-spacing: 0.3px;
}

.post-body h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.4;
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-body p {
  font-size: 0.88rem;
  color: var(--text-light);
  line-height: 1.7;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 14px;
}

.post-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--text-light);
  border-top: 1px solid var(--border);
  padding-top: 14px;
  margin-top: auto;
}

.post-meta i { margin-right: 4px; }

.post-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 48px 24px;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px dashed var(--border);
  color: var(--text-light);
  font-size: 1rem;
}

.post-empty i { font-size: 2.4rem; color: var(--gold); margin-bottom: 16px; display: block; }

/* ===== Data / Stats ===== */
.data-section { background: var(--bg-dark); position: relative; overflow: hidden; }

.data-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  opacity: 0.08;
}

.data-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; position: relative; z-index: 1; }

.data-card {
  text-align: center;
  padding: 36px 20px;
  background: rgba(255,255,255,0.04);
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,0.06);
  transition: var(--transition);
}

.data-card:hover { background: rgba(255,255,255,0.08); transform: translateY(-4px); }

.data-card i { font-size: 2rem; color: var(--gold); margin-bottom: 14px; display: block; }

.data-card .num {
  font-size: 2.6rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  letter-spacing: -0.5px;
}

.data-card .num span { color: var(--gold-light); }

.data-card .label { font-size: 0.9rem; color: rgba(255,255,255,0.55); margin-top: 6px; }

/* ===== Process / Flow ===== */
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; position: relative; }

.process-step {
  text-align: center;
  position: relative;
  padding: 0 12px;
}

.process-step:not(:last-child)::after {
  content: '→';
  position: absolute;
  right: -16px;
  top: 28px;
  font-size: 1.6rem;
  color: var(--gold);
  font-weight: 700;
  opacity: 0.5;
}

.process-num {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 800;
  color: #fff;
  margin: 0 auto 16px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  box-shadow: 0 4px 16px rgba(26, 42, 108, 0.25);
}

.process-step h4 { font-size: 1rem; font-weight: 700; margin-bottom: 6px; color: var(--text); }
.process-step p { font-size: 0.85rem; color: var(--text-light); 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);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover { border-color: rgba(240, 165, 0, 0.2); }

.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  transition: var(--transition);
  user-select: none;
  gap: 16px;
}

.faq-q i { color: var(--gold); font-size: 0.85rem; transition: var(--transition); flex-shrink: 0; }

.faq-item.active .faq-q i { transform: rotate(180deg); }

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  padding: 0 24px;
  color: var(--text-light);
  font-size: 0.92rem;
  line-height: 1.8;
}

.faq-item.active .faq-a {
  max-height: 200px;
  padding: 0 24px 20px;
}

/* ===== CTA ===== */
.cta-section {
  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-3.png') center center / cover no-repeat;
  opacity: 0.08;
}

.cta-box {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 60px 40px;
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
}

.cta-box h2 { font-size: 2rem; font-weight: 800; color: #fff; margin-bottom: 12px; }
.cta-box p { font-size: 1.05rem; color: rgba(255,255,255,0.65); margin-bottom: 28px; max-width: 560px; margin-left: auto; margin-right: auto; }
.cta-box .btn { margin: 0 6px; }

/* ===== Footer ===== */
.footer {
  background: #0a0f1e;
  color: rgba(255,255,255,0.6);
  padding: 48px 0 28px;
  border-top: 1px solid rgba(255,255,255,0.04);
}

.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: 0.85rem; line-height: 1.7; max-width: 320px; }

.footer h4 { font-size: 0.9rem; font-weight: 700; color: #fff; margin-bottom: 16px; }
.footer ul li { margin-bottom: 8px; }
.footer ul a { font-size: 0.85rem; color: rgba(255,255,255,0.5); transition: var(--transition); }
.footer ul a:hover { color: var(--gold); padding-left: 4px; }

.footer-social { display: flex; gap: 12px; margin-top: 16px; }
.footer-social a {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.06);
  color: rgba(255,255,255,0.5);
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-social a:hover { background: var(--gold); color: #0d152e; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.04);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.35);
}

.footer-bottom a { color: rgba(255,255,255,0.35); }
.footer-bottom a:hover { color: var(--gold); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero-title { font-size: 2.6rem; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { order: -1; }
  .hero-img-wrap { max-width: 100%; }
  .hero-stats { grid-template-columns: repeat(3, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .data-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .process-step:nth-child(2)::after { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  :root { --header-h: 64px; }
  
  .mobile-toggle { display: flex; }
  
  .nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: rgba(13, 21, 46, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 20px 24px;
    gap: 4px;
    border-bottom: 1px solid rgba(240, 165, 0, 0.1);
    transform: translateY(-110%);
    opacity: 0;
    transition: var(--transition);
    pointer-events: none;
  }
  
  .nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav a { width: 100%; padding: 12px 18px; justify-content: center; }
  .nav-cta { margin-top: 8px; }
  
  .hero { padding: 100px 0 60px; min-height: auto; }
  .hero-title { font-size: 2rem; }
  .hero-desc { font-size: 0.95rem; }
  .hero-stats { grid-template-columns: repeat(3, 1fr); gap: 12px; }
  .hero-stat { padding: 14px 10px; }
  .hero-stat-num { font-size: 1.4rem; }
  
  .section { padding: 56px 0; }
  .section-title { font-size: 1.6rem; }
  
  .features-grid { grid-template-columns: 1fr; }
  .category-grid { grid-template-columns: 1fr; }
  .category-card-inner { flex-direction: column; text-align: center; }
  .category-img { width: 100%; height: 160px; }
  
  .posts-grid { grid-template-columns: 1fr; }
  
  .data-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .data-card { padding: 24px 16px; }
  .data-card .num { font-size: 2rem; }
  
  .process-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
  .process-step:nth-child(2)::after { display: none; }
  .process-step:nth-child(even)::after { display: none; }
  
  .cta-box { padding: 40px 24px; }
  .cta-box h2 { font-size: 1.5rem; }
  .cta-box .btn { display: block; margin: 10px auto; width: fit-content; }
  
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .hero-title { font-size: 1.6rem; }
  .hero-stats { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .hero-stat-num { font-size: 1.2rem; }
  .hero-stat-label { font-size: 0.7rem; }
  .data-grid { grid-template-columns: 1fr 1fr; }
  .process-grid { grid-template-columns: 1fr; }
  .process-step::after { display: none !important; }
  .btn { width: 100%; justify-content: center; }
  .hero-actions { flex-direction: column; }
}

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #e53935;
            --primary-dark: #b71c1c;
            --primary-light: #ff6f60;
            --secondary: #1a237e;
            --secondary-light: #3949ab;
            --accent: #ffd600;
            --bg-dark: #0d0d0d;
            --bg-card: #1a1a2e;
            --bg-section: #121212;
            --bg-light: #f5f5f5;
            --text-light: #ffffff;
            --text-muted: #b0b0b0;
            --text-dark: #e0e0e0;
            --border-color: rgba(255, 255, 255, 0.08);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 14px 48px rgba(229, 57, 53, 0.2);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --spacing-section: 80px;
            --container-max: 1200px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-main);
            font-size: 16px;
            line-height: 1.7;
            background: var(--bg-dark);
            color: var(--text-dark);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--text-light);
        }

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

        /* ===== Header / Nav ===== */
        .header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(13, 13, 13, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-color);
            padding: 0 24px;
        }
        .header-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-light);
            letter-spacing: -0.5px;
        }
        .logo i {
            color: var(--primary);
            font-size: 26px;
            background: rgba(229, 57, 53, 0.15);
            padding: 8px;
            border-radius: 10px;
        }
        .logo span {
            background: linear-gradient(135deg, #fff 40%, var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav a {
            padding: 8px 18px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
            position: relative;
        }
        .nav a i {
            font-size: 14px;
        }
        .nav a:hover {
            color: var(--text-light);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav a.active {
            color: var(--text-light);
            background: rgba(229, 57, 53, 0.18);
        }
        .nav a.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .nav a.nav-cta {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            padding: 8px 22px;
            border-radius: 24px;
            box-shadow: 0 4px 16px rgba(229, 57, 53, 0.35);
        }
        .nav a.nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(229, 57, 53, 0.45);
        }
        .nav-toggle {
            display: none;
            font-size: 24px;
            color: var(--text-light);
            background: none;
            cursor: pointer;
            padding: 6px 10px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav {
                position: fixed;
                top: 68px;
                left: 0;
                right: 0;
                background: rgba(13, 13, 13, 0.98);
                backdrop-filter: blur(18px);
                flex-direction: column;
                padding: 20px 24px 28px;
                gap: 4px;
                border-bottom: 1px solid var(--border-color);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                z-index: 999;
            }
            .nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav a {
                width: 100%;
                padding: 12px 16px;
                font-size: 16px;
                border-radius: 10px;
            }
            .nav a.active::after {
                display: none;
            }
            .nav a.nav-cta {
                text-align: center;
                margin-top: 8px;
            }
        }

        /* ===== Article Banner ===== */
        .article-banner {
            position: relative;
            min-height: 320px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 80px 24px 60px;
            background: linear-gradient(135deg, rgba(13, 13, 13, 0.92), rgba(26, 35, 126, 0.7)), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            border-bottom: 1px solid var(--border-color);
        }
        .article-banner .banner-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(229, 57, 53, 0.15), transparent 70%);
            pointer-events: none;
        }
        .article-banner .banner-content {
            position: relative;
            z-index: 2;
            max-width: 820px;
        }
        .article-banner .banner-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(229, 57, 53, 0.2);
            color: var(--primary-light);
            padding: 6px 18px;
            border-radius: 24px;
            font-size: 14px;
            font-weight: 500;
            margin-bottom: 20px;
            border: 1px solid rgba(229, 57, 53, 0.25);
        }
        .article-banner h1 {
            font-size: 40px;
            font-weight: 800;
            background: linear-gradient(135deg, #fff 50%, var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
            margin-bottom: 16px;
        }
        .article-banner .banner-meta {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 24px;
            flex-wrap: wrap;
            font-size: 14px;
            color: var(--text-muted);
        }
        .article-banner .banner-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-banner .banner-meta i {
            color: var(--primary);
        }

        @media (max-width: 768px) {
            .article-banner {
                min-height: 240px;
                padding: 60px 16px 40px;
            }
            .article-banner h1 {
                font-size: 26px;
            }
            .article-banner .banner-meta {
                gap: 12px;
                font-size: 13px;
            }
        }
        @media (max-width: 520px) {
            .article-banner h1 {
                font-size: 22px;
            }
            .article-banner .banner-meta {
                flex-direction: column;
                gap: 6px;
            }
        }

        /* ===== Article Body ===== */
        .article-section {
            padding: 60px 0 80px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            align-items: start;
        }
        .article-main {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 40px 44px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
        }
        .article-main .article-content {
            font-size: 16.5px;
            line-height: 1.9;
            color: var(--text-dark);
        }
        .article-main .article-content p {
            margin-bottom: 20px;
        }
        .article-main .article-content h2 {
            font-size: 24px;
            margin: 36px 0 16px;
            color: var(--text-light);
        }
        .article-main .article-content h3 {
            font-size: 20px;
            margin: 28px 0 12px;
            color: var(--text-light);
        }
        .article-main .article-content img {
            border-radius: var(--radius-md);
            margin: 24px 0;
            box-shadow: var(--shadow-card);
        }
        .article-main .article-content ul,
        .article-main .article-content ol {
            margin: 16px 0 20px;
            padding-left: 24px;
            list-style: disc;
        }
        .article-main .article-content li {
            margin-bottom: 8px;
        }
        .article-main .article-content blockquote {
            border-left: 4px solid var(--primary);
            padding: 16px 24px;
            margin: 24px 0;
            background: rgba(229, 57, 53, 0.06);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-muted);
            font-style: italic;
        }
        .article-main .article-content a {
            color: var(--primary-light);
            text-decoration: underline;
        }
        .article-main .article-content a:hover {
            color: var(--accent);
        }

        .article-notfound {
            text-align: center;
            padding: 60px 20px;
        }
        .article-notfound i {
            font-size: 64px;
            color: var(--text-muted);
            margin-bottom: 20px;
            opacity: 0.5;
        }
        .article-notfound h2 {
            font-size: 28px;
            margin-bottom: 12px;
        }
        .article-notfound p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }
        .article-notfound .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 12px 32px;
            border-radius: 30px;
            font-weight: 600;
            transition: var(--transition);
        }
        .article-notfound .btn-back:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(229, 57, 53, 0.35);
        }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
        }
        .sidebar-card h3 {
            font-size: 17px;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h3 i {
            color: var(--primary);
        }
        .sidebar-card ul li {
            padding: 8px 0;
            border-bottom: 1px solid var(--border-color);
        }
        .sidebar-card ul li:last-child {
            border-bottom: none;
        }
        .sidebar-card ul li a {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .sidebar-card ul li a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .sidebar-card ul li a i {
            font-size: 12px;
            color: var(--primary);
        }
        .sidebar-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border: none;
            text-align: center;
            padding: 28px 20px;
        }
        .sidebar-cta h3 {
            color: #fff;
            justify-content: center;
        }
        .sidebar-cta p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 14px;
            margin-bottom: 18px;
        }
        .sidebar-cta .btn-sidebar {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            color: var(--primary-dark);
            padding: 10px 28px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 15px;
            transition: var(--transition);
        }
        .sidebar-cta .btn-sidebar:hover {
            transform: scale(1.05);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.3);
        }

        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .article-sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
        }
        @media (max-width: 640px) {
            .article-main {
                padding: 24px 18px;
            }
            .article-main .article-content {
                font-size: 15px;
            }
            .article-sidebar {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Related Posts ===== */
        .related-section {
            padding: 0 0 60px;
        }
        .related-section h2 {
            font-size: 26px;
            margin-bottom: 32px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .related-section h2 i {
            color: var(--primary);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 24px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-card);
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(229, 57, 53, 0.25);
        }
        .related-card .rc-img {
            height: 160px;
            background: var(--bg-section) center center / cover no-repeat;
            position: relative;
        }
        .related-card .rc-img .rc-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--primary);
            color: #fff;
            padding: 4px 14px;
            border-radius: 18px;
            font-size: 12px;
            font-weight: 600;
        }
        .related-card .rc-body {
            padding: 18px 18px 20px;
        }
        .related-card .rc-body h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .rc-body h3 a {
            color: var(--text-light);
        }
        .related-card .rc-body h3 a:hover {
            color: var(--primary-light);
        }
        .related-card .rc-body p {
            font-size: 13px;
            color: var(--text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }
        .related-card .rc-body .rc-meta {
            display: flex;
            justify-content: space-between;
            font-size: 12px;
            color: var(--text-muted);
        }
        .related-card .rc-body .rc-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        @media (max-width: 560px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-section);
            border-top: 1px solid var(--border-color);
            padding: 56px 24px 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            max-width: 320px;
            line-height: 1.7;
        }
        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 16px;
        }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-muted);
            font-size: 16px;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .footer h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 14px;
        }
        .footer ul li {
            margin-bottom: 8px;
        }
        .footer ul li a {
            font-size: 14px;
            color: var(--text-muted);
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .footer ul li a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--primary-light);
        }
        .footer-bottom a:hover {
            text-decoration: underline;
        }

        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Mobile Nav Toggle Script inline ===== */
        @media (max-width: 768px) {
            .header-inner {
                height: 60px;
            }
            .logo {
                font-size: 18px;
            }
            .logo i {
                font-size: 20px;
                padding: 6px;
            }
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --accent-light: #e9c46a;
            --bg-dark: #0b1a2e;
            --bg-darker: #060f1a;
            --bg-card: #112240;
            --bg-light: #f1faee;
            --bg-white: #ffffff;
            --text-primary: #1d3557;
            --text-secondary: #457b9d;
            --text-light: #a8dadc;
            --text-white: #ffffff;
            --text-muted: #6c757d;
            --border-color: rgba(168, 218, 220, 0.2);
            --border-light: #e9ecef;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.12);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.18);
            --shadow-glow: 0 0 40px rgba(230, 57, 70, 0.25);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --container-width: 1200px;
            --header-height: 72px;
            --spacing-section: 90px;
            --spacing-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-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: var(--secondary-light);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary);
        }

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            color: var(--text-primary);
            font-weight: 700;
        }

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

        /* ===== Header & Navigation ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-height);
            background: rgba(6, 15, 26, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            transition: background var(--transition);
        }

        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: 0.5px;
        }
        .logo i {
            color: var(--primary);
            font-size: 26px;
        }
        .logo span {
            background: linear-gradient(135deg, var(--text-white) 60%, var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-light);
            transition: all var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav a i {
            margin-right: 6px;
            font-size: 14px;
        }
        .nav a:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav a.active {
            color: var(--text-white);
            background: rgba(230, 57, 70, 0.2);
        }
        .nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .nav a.nav-cta {
            background: var(--primary);
            color: var(--text-white);
            font-weight: 700;
            padding: 8px 24px;
            border-radius: var(--radius-xl);
            box-shadow: 0 4px 20px rgba(230, 57, 70, 0.35);
            transition: all var(--transition);
        }
        .nav a.nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(230, 57, 70, 0.5);
        }

        /* Mobile nav toggle */
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-white);
            font-size: 24px;
            cursor: pointer;
            padding: 8px;
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                width: 100%;
                background: rgba(6, 15, 26, 0.98);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 4px;
                transform: translateY(-120%);
                opacity: 0;
                visibility: hidden;
                transition: all 0.4s ease;
                border-bottom: 1px solid var(--border-color);
                backdrop-filter: blur(20px);
            }
            .nav.open {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            .nav a {
                width: 100%;
                padding: 12px 16px;
                font-size: 16px;
                border-radius: var(--radius-sm);
            }
            .nav a.nav-cta {
                text-align: center;
                margin-top: 8px;
            }
            .nav a.active::after {
                display: none;
            }
            .nav a.active {
                background: rgba(230, 57, 70, 0.15);
                border-left: 3px solid var(--primary);
            }
        }

        /* ===== Hero / Banner ===== */
        .hero-banner {
            padding-top: var(--header-height);
            min-height: 460px;
            display: flex;
            align-items: center;
            position: relative;
            background: var(--bg-darker);
            overflow: hidden;
        }
        .hero-banner .bg-image {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.45;
            transform: scale(1.05);
            transition: transform 8s ease;
        }
        .hero-banner:hover .bg-image {
            transform: scale(1);
        }
        .hero-banner .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(6, 15, 26, 0.88) 30%, rgba(230, 57, 70, 0.25) 80%);
        }
        .hero-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 60px 24px;
        }
        .hero-banner .badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(230, 57, 70, 0.2);
            border: 1px solid rgba(230, 57, 70, 0.3);
            color: var(--primary-light);
            padding: 6px 20px;
            border-radius: var(--radius-xl);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 20px;
            backdrop-filter: blur(4px);
        }
        .hero-banner .badge i {
            font-size: 14px;
        }
        .hero-banner h1 {
            font-size: 52px;
            font-weight: 900;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
            line-height: 1.15;
        }
        .hero-banner h1 span {
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-banner p {
            font-size: 19px;
            color: var(--text-light);
            max-width: 680px;
            margin: 0 auto 30px;
            line-height: 1.7;
        }
        .hero-banner .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
        }
        .hero-banner .btn-primary {
            padding: 14px 40px;
            background: var(--primary);
            color: var(--text-white);
            font-weight: 700;
            font-size: 16px;
            border-radius: var(--radius-xl);
            box-shadow: 0 6px 30px rgba(230, 57, 70, 0.35);
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .hero-banner .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(230, 57, 70, 0.5);
        }
        .hero-banner .btn-outline {
            padding: 14px 36px;
            background: transparent;
            color: var(--text-white);
            font-weight: 600;
            font-size: 16px;
            border-radius: var(--radius-xl);
            border: 2px solid rgba(255, 255, 255, 0.25);
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .hero-banner .btn-outline:hover {
            border-color: var(--primary);
            background: rgba(230, 57, 70, 0.15);
            transform: translateY(-3px);
        }

        @media (max-width: 768px) {
            .hero-banner {
                min-height: 380px;
            }
            .hero-banner h1 {
                font-size: 32px;
            }
            .hero-banner p {
                font-size: 16px;
            }
            .hero-banner .btn-primary,
            .hero-banner .btn-outline {
                padding: 12px 28px;
                font-size: 15px;
            }
        }
        @media (max-width: 520px) {
            .hero-banner h1 {
                font-size: 26px;
            }
            .hero-banner .badge {
                font-size: 12px;
                padding: 4px 16px;
            }
            .hero-banner .hero-actions {
                flex-direction: column;
                align-items: center;
            }
        }

        /* ===== Section Shared ===== */
        .section {
            padding: var(--spacing-section) 0;
        }
        .section-alt {
            background: var(--bg-white);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-light);
        }
        .section-dark h2,
        .section-dark h3 {
            color: var(--text-white);
        }

        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto var(--spacing-block);
        }
        .section-header h2 {
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-header h2 i {
            color: var(--primary);
            margin-right: 8px;
        }
        .section-header p {
            font-size: 17px;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .section-header .divider {
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin: 16px auto 0;
        }

        @media (max-width: 768px) {
            .section {
                padding: 60px 0;
            }
            .section-header h2 {
                font-size: 28px;
            }
            .section-header p {
                font-size: 15px;
            }
            :root {
                --spacing-section: 60px;
                --spacing-block: 40px;
            }
        }

        /* ===== Intro Block ===== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }
        .intro-grid .intro-text h3 {
            font-size: 30px;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .intro-grid .intro-text h3 span {
            color: var(--primary);
        }
        .intro-grid .intro-text p {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .intro-grid .intro-text .features-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-top: 20px;
        }
        .intro-grid .intro-text .features-list li {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 15px;
            color: var(--text-primary);
        }
        .intro-grid .intro-text .features-list li i {
            color: var(--primary);
            font-size: 18px;
            width: 24px;
            text-align: center;
        }
        .intro-grid .intro-image img {
            width: 100%;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            transition: transform var(--transition);
        }
        .intro-grid .intro-image img:hover {
            transform: scale(1.02);
        }

        @media (max-width: 768px) {
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .intro-grid .intro-text h3 {
                font-size: 24px;
            }
            .intro-grid .intro-image {
                order: -1;
            }
        }

        /* ===== Card Grid ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .card-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            border: 1px solid var(--border-light);
        }
        .card-item:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary-light);
        }
        .card-item .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
        }
        .card-item .card-body {
            padding: 24px 20px 20px;
        }
        .card-item .card-body .tag {
            display: inline-block;
            background: rgba(230, 57, 70, 0.08);
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: var(--radius-xl);
            margin-bottom: 10px;
            letter-spacing: 0.3px;
        }
        .card-item .card-body h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .card-item .card-body h3 a {
            color: var(--text-primary);
        }
        .card-item .card-body h3 a:hover {
            color: var(--primary);
        }
        .card-item .card-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .card-item .card-body .meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-light);
            border-top: 1px solid var(--border-light);
            padding-top: 12px;
            margin-top: 4px;
        }
        .card-item .card-body .meta i {
            margin-right: 4px;
        }

        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .card-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Stats / Data Block ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat-item {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            padding: 30px 16px;
            transition: all var(--transition);
        }
        .stat-item:hover {
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-4px);
            border-color: var(--primary);
        }
        .stat-item .num {
            font-size: 42px;
            font-weight: 900;
            color: var(--text-white);
            line-height: 1.2;
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .stat-item .label {
            font-size: 15px;
            color: var(--text-light);
            margin-top: 6px;
            font-weight: 500;
        }
        .stat-item i {
            font-size: 28px;
            color: var(--primary-light);
            margin-bottom: 12px;
            display: block;
        }

        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item .num {
                font-size: 32px;
            }
        }
        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        /* ===== Process / Steps ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 32px 24px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            position: relative;
        }
        .step-item:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
        }
        .step-item .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--text-white);
            font-size: 20px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.3);
        }
        .step-item h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .step-item i {
            font-size: 32px;
            color: var(--primary);
            margin-bottom: 12px;
            display: block;
        }

        @media (max-width: 1024px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .steps-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-sm);
        }
        .faq-item .faq-q {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 16px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text-primary);
            transition: background var(--transition);
            background: transparent;
            width: 100%;
            text-align: left;
        }
        .faq-item .faq-q:hover {
            background: rgba(230, 57, 70, 0.03);
        }
        .faq-item .faq-q i {
            color: var(--primary);
            transition: transform var(--transition);
            font-size: 14px;
        }
        .faq-item.active .faq-q i {
            transform: rotate(180deg);
        }
        .faq-item .faq-a {
            padding: 0 24px 18px;
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
        }
        .faq-item.active .faq-a {
            display: block;
        }
        .faq-item .faq-a p {
            margin-bottom: 8px;
        }
        .faq-item .faq-a p:last-child {
            margin-bottom: 0;
        }

        /* ===== CTA ===== */
        .cta-block {
            padding: 80px 0;
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.12;
        }
        .cta-block .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .cta-block h2 {
            font-size: 36px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 14px;
        }
        .cta-block p {
            font-size: 17px;
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto 30px;
            line-height: 1.7;
        }
        .cta-block .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .cta-block .btn-primary {
            padding: 16px 44px;
            background: var(--primary);
            color: var(--text-white);
            font-weight: 700;
            font-size: 17px;
            border-radius: var(--radius-xl);
            box-shadow: 0 6px 30px rgba(230, 57, 70, 0.35);
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .cta-block .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(230, 57, 70, 0.5);
        }
        .cta-block .btn-outline-light {
            padding: 16px 40px;
            background: transparent;
            color: var(--text-white);
            font-weight: 600;
            font-size: 17px;
            border-radius: var(--radius-xl);
            border: 2px solid rgba(255, 255, 255, 0.2);
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .cta-block .btn-outline-light:hover {
            border-color: var(--primary);
            background: rgba(230, 57, 70, 0.1);
            transform: translateY(-3px);
        }

        @media (max-width: 768px) {
            .cta-block h2 {
                font-size: 28px;
            }
            .cta-block p {
                font-size: 15px;
            }
            .cta-block .btn-primary,
            .cta-block .btn-outline-light {
                padding: 14px 32px;
                font-size: 15px;
            }
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-darker);
            padding: 60px 0 30px;
            border-top: 1px solid var(--border-color);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-brand .logo {
            font-size: 20px;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 18px;
            max-width: 320px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-light);
            font-size: 18px;
            transition: all var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: var(--text-white);
            transform: translateY(-3px);
        }
        .footer h4 {
            color: var(--text-white);
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer ul li {
            margin-bottom: 10px;
        }
        .footer ul li a {
            color: var(--text-muted);
            font-size: 14px;
            transition: color var(--transition);
        }
        .footer ul li a:hover {
            color: var(--primary-light);
        }
        .footer ul li a i {
            margin-right: 6px;
            width: 18px;
            text-align: center;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 24px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-light);
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Utility ===== */
        .text-center {
            text-align: center;
        }
        .mt-2 {
            margin-top: 20px;
        }
        .mb-2 {
            margin-bottom: 20px;
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            padding: 16px 0;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-muted);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb span {
            color: var(--text-primary);
            font-weight: 500;
        }
        .breadcrumb i {
            font-size: 12px;
            color: var(--text-light);
        }

        /* ===== Back to top ===== */
        .back-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--text-white);
            font-size: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-md);
            z-index: 999;
            opacity: 0;
            visibility: hidden;
            transform: translateY(20px);
            transition: all var(--transition);
            cursor: pointer;
            border: none;
        }
        .back-top.visible {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .back-top:hover {
            background: var(--primary-dark);
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }