/* roulang page: index */
:root {
  --bg-primary: #051F14;
  --bg-secondary: #0B2E1E;
  --bg-card: #083720;
  --accent-gold: #F59E0B;
  --accent-gold-light: #FCD34D;
  --accent-red: #DC2626;
  --text-primary: #F8FAFC;
  --text-secondary: #D1FAE5;
  --text-muted: #A3A375;
  --border-gold-30: rgba(245, 158, 11, 0.3);
  --border-gold-20: rgba(245, 158, 11, 0.2);
  --shadow-gold: 0 6px 25px rgba(245, 158, 11, 0.35);
  --shadow-card: 0 14px 32px rgba(0, 0, 0, 0.6);
  --font-heading: 'Be Vietnam Pro', sans-serif;
  --font-body: 'Inter', sans-serif;
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 28px;
  --radius-xl: 36px;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition-fast);
}

ul {
  list-style: none;
}

.container {
  max-width: 1320px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.section-spacing {
  padding-top: 88px;
  padding-bottom: 88px;
}

/* Header & Navigation */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(5, 31, 20, 0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-gold-20);
  z-index: 100;
  transition: background var(--transition-smooth);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.logo {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.4rem;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-gold-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-links a {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text-secondary);
  transition: color var(--transition-fast), opacity var(--transition-fast);
  position: relative;
  padding: 6px 0;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent-gold);
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--accent-gold);
  border-radius: 2px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-login {
  padding: 8px 20px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.9rem;
  background: transparent;
  border: 1.5px solid var(--accent-gold);
  color: var(--accent-gold);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-login:hover {
  background: var(--accent-gold);
  color: #051F14;
}

.btn-signup {
  padding: 8px 24px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 0.9rem;
  background: linear-gradient(135deg, var(--accent-gold) 0%, #D97706 100%);
  color: #051F14;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(245, 158, 11, 0.3);
  transition: all var(--transition-fast);
}

.btn-signup:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 22px rgba(245, 158, 11, 0.45);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.6rem;
  cursor: pointer;
  padding: 4px;
}

/* Hero - Card Stack */
.hero-section {
  padding-top: 140px;
  padding-bottom: 80px;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url('/assets/images/backpic/back-1.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.18;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 48px;
  flex-wrap: wrap;
}

.hero-text {
  flex: 1 1 500px;
}

.hero-badge {
  display: inline-block;
  padding: 8px 18px;
  background: rgba(220, 38, 38, 0.15);
  border: 1px solid var(--accent-red);
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  color: #FECACA;
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}

.hero-text h1 {
  font-family: var(--font-heading);
  font-size: clamp(2.3rem, 5vw, 3.4rem);
  font-weight: 800;
  line-height: 1.2;
  background: linear-gradient(135deg, var(--accent-gold) 0%, #FDE68A 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 20px;
}

.hero-description {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 620px;
}

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

.btn-primary-gold {
  display: inline-flex;
  align-items: center;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 1rem;
  background: linear-gradient(135deg, var(--accent-gold) 0%, #B45309 100%);
  color: #051F14;
  border: none;
  cursor: pointer;
  box-shadow: var(--shadow-gold);
  transition: all var(--transition-fast);
}

.btn-primary-gold:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(245, 158, 11, 0.5);
}

.btn-outline-gold {
  display: inline-flex;
  align-items: center;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  background: transparent;
  border: 1.5px solid var(--accent-gold);
  color: var(--accent-gold);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-outline-gold:hover {
  background: rgba(245, 158, 11, 0.1);
}

.hero-cards-stack {
  flex: 1 1 420px;
  position: relative;
  min-height: 400px;
}

.hero-main-card {
  background: rgba(8, 55, 32, 0.85);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-gold-30);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
  z-index: 3;
  box-shadow: var(--shadow-card);
}

.hero-main-card h3 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.3rem;
  margin-bottom: 10px;
  color: var(--accent-gold);
}

.hero-main-card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.hero-stat-row {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
}

.hero-stat {
  text-align: left;
}

.hero-stat-value {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent-gold-light);
}

.hero-stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.hero-side-card {
  background: rgba(8, 55, 32, 0.7);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-gold-20);
  border-radius: var(--radius-md);
  padding: 24px;
  position: absolute;
  width: 240px;
  box-shadow: 0 10px 24px rgba(0,0,0,0.5);
}

.hero-side-card-top {
  top: -30px;
  right: 20px;
  z-index: 2;
}

.hero-side-card-bottom {
  bottom: -20px;
  right: -20px;
  z-index: 1;
}

.hero-side-card h4 {
  font-weight: 600;
  font-size: 1rem;
  margin-bottom: 8px;
  color: var(--accent-gold);
}

.hero-side-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Capability Overview */
.capability-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
}

.capability-card {
  background: var(--bg-card);
  border: 1px solid var(--border-gold-20);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  transition: all var(--transition-smooth);
}

.capability-card:hover {
  border-color: var(--accent-gold);
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(0,0,0,0.5);
}

.capability-icon {
  font-size: 2rem;
  margin-bottom: 16px;
  color: var(--accent-gold);
}

.capability-card h3 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.15rem;
  margin-bottom: 10px;
}

.capability-card p {
  font-size: 0.93rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* Industry Scenarios */
.scenarios-flex {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}

.scenario-col {
  flex: 1 1 280px;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  padding: 28px;
  border-left: 4px solid var(--accent-gold);
}

.scenario-col h4 {
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 10px;
  color: var(--accent-gold);
}

.scenario-col p {
  font-size: 0.93rem;
  color: var(--text-secondary);
}

/* Solution Matrix */
.solution-matrix {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.solution-item {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 28px;
  border: 1px solid var(--border-gold-20);
}

.solution-item h4 {
  font-weight: 700;
  font-size: 1.15rem;
  margin-bottom: 12px;
}

.solution-item p {
  font-size: 0.92rem;
  color: var(--text-muted);
}

/* Credentials Wall */
.credentials-row {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
}

.credential-badge {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  color: var(--text-secondary);
}

.credential-badge i {
  font-size: 1.6rem;
  color: var(--accent-gold);
}

/* Delivery Process */
.process-timeline {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.process-step {
  flex: 1 1 200px;
  text-align: left;
  padding: 24px;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  position: relative;
}

.process-step-num {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--accent-gold);
  opacity: 0.35;
  line-height: 1;
  margin-bottom: 8px;
}

.process-step h4 {
  font-weight: 700;
  margin-bottom: 6px;
}

.process-step p {
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* Success Cases - Vertical Cards */
.success-stack {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.success-card {
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  padding: 28px;
  border: 1px solid var(--border-gold-20);
}

.success-card .highlight-num {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent-gold);
}

.success-card p {
  margin-top: 10px;
  color: var(--text-secondary);
  font-size: 0.94rem;
}

/* News List */
.news-layout {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 36px;
}

.news-list-col ul {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.news-list-col li {
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-gold-20);
}

.news-list-col a {
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-primary);
  transition: color var(--transition-fast);
}

.news-list-col a:hover {
  color: var(--accent-gold);
}

.news-list-col .news-date {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-right: 10px;
}

.news-summary {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

.news-sidebar {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 28px;
  border: 1px solid var(--border-gold-20);
}

.news-sidebar h4 {
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--accent-gold);
}

.news-sidebar p {
  font-size: 0.92rem;
  color: var(--text-secondary);
}

/* Inquiry Form */
.inquiry-form {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: 48px;
  border: 1px solid var(--border-gold-20);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
}

.inquiry-form h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-gold);
  margin-bottom: 10px;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-grid input, .form-grid textarea {
  background: var(--bg-card);
  border: 1px solid var(--border-gold-20);
  border-radius: var(--radius-sm);
  padding: 14px;
  color: white;
  font-size: 0.95rem;
  width: 100%;
}

.form-grid textarea {
  grid-column: span 2;
  min-height: 100px;
}

.privacy-note {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 10px;
}

/* Footer */
.site-footer {
  background: #031108;
  border-top: 1px solid var(--border-gold-20);
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col h4 {
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--accent-gold);
}

.footer-col ul li {
  margin-bottom: 10px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.footer-bottom {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  border-top: 1px solid rgba(255,255,255,0.05);
  padding-top: 24px;
}

/* FAB */
.fab-left {
  position: fixed;
  left: 20px;
  bottom: 100px;
  z-index: 50;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #FCD34D, #B45309);
  border: 2px solid var(--accent-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  color: #051F14;
  box-shadow: var(--shadow-gold);
  cursor: pointer;
  transition: all var(--transition-smooth);
  opacity: 0.85;
}

.fab-left:hover {
  opacity: 1;
  transform: scale(1.1);
}

/* Responsive */
@media (max-width: 1024px) {
  .hero-cards-stack {
    min-height: auto;
    margin-top: 30px;
  }
  .hero-side-card {
    position: static;
    width: 100%;
    margin-top: 16px;
  }
  .news-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .mobile-menu-btn {
    display: block;
  }
  .inquiry-form {
    grid-template-columns: 1fr;
    padding: 28px;
  }
  .form-grid {
    grid-template-columns: 1fr;
  }
  .hero-content {
    flex-direction: column;
  }
}

@media (max-width: 520px) {
  .hero-text h1 {
    font-size: 1.9rem;
  }
  .header-actions .btn-login, .header-actions .btn-signup {
    padding: 6px 16px;
    font-size: 0.8rem;
  }
}

/* roulang page: article */
:root {
    --bg-primary: #051F14;
    --bg-secondary: #0B2E1E;
    --bg-card: #083720;
    --accent-gold: #F59E0B;
    --accent-gold-light: #FCD34D;
    --accent-red: #DC2626;
    --text-primary: #F8FAFC;
    --text-secondary: #D1FAE5;
    --text-muted: #A3A375;
    --border-gold-30: rgba(245, 158, 11, 0.3);
    --border-gold-20: rgba(245, 158, 11, 0.2);
    --shadow-gold: 0 6px 25px rgba(245, 158, 11, 0.35);
    --shadow-card: 0 14px 32px rgba(0, 0, 0, 0.6);
    --font-heading: 'Be Vietnam Pro', sans-serif;
    --font-body: 'Inter', sans-serif;
    --radius-sm: 12px;
    --radius-md: 20px;
    --radius-lg: 28px;
    --radius-xl: 36px;
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  }
  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
  html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
  }
  body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
  }
  img {
    max-width: 100%;
    height: auto;
    display: block;
  }
  a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
  }
  .container {
    max-width: 1320px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 24px;
    padding-right: 24px;
  }
  .section-spacing {
    padding-top: 88px;
    padding-bottom: 88px;
  }
  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(5, 31, 20, 0.92);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--border-gold-20);
    z-index: 100;
    transition: background var(--transition-smooth);
  }
  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
  }
  .logo {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.4rem;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-gold-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    white-space: nowrap;
  }
  .nav-links {
    display: flex;
    align-items: center;
    gap: 36px;
  }
  .nav-links a {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-secondary);
    transition: color var(--transition-fast), opacity var(--transition-fast);
    position: relative;
    padding: 6px 0;
  }
  .nav-links a:hover,
  .nav-links a.active {
    color: var(--accent-gold);
  }
  .nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--accent-gold);
    border-radius: 2px;
  }
  .header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
  }
  .btn-login {
    padding: 8px 20px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.9rem;
    background: transparent;
    border: 1.5px solid var(--accent-gold);
    color: var(--accent-gold);
    cursor: pointer;
    transition: all var(--transition-fast);
  }
  .btn-login:hover {
    background: var(--accent-gold);
    color: #051F14;
  }
  .btn-signup {
    padding: 8px 24px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 0.9rem;
    background: linear-gradient(135deg, var(--accent-gold) 0%, #D97706 100%);
    color: #051F14;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 14px rgba(245, 158, 11, 0.3);
    transition: all var(--transition-fast);
  }
  .btn-signup:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 22px rgba(245, 158, 11, 0.45);
  }
  .mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.6rem;
    cursor: pointer;
    padding: 4px;
  }
  .page-banner {
    position: relative;
    padding-top: 160px;
    padding-bottom: 90px;
    background-image: url('/assets/images/backpic/back-5.jpg');
    background-size: cover;
    background-position: center;
    overflow: hidden;
  }
  .page-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(0deg, var(--bg-primary) 0%, rgba(5, 31, 20, 0.75) 100%);
    z-index: 1;
  }
  .page-banner .container {
    position: relative;
    z-index: 2;
  }
  .banner-badge {
    display: inline-block;
    padding: 8px 18px;
    background: rgba(220, 38, 38, 0.15);
    border: 1px solid var(--accent-red);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    color: #FECACA;
    margin-bottom: 20px;
    letter-spacing: 0.5px;
  }
  .banner-title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4.5vw, 3rem);
    font-weight: 800;
    line-height: 1.2;
    background: linear-gradient(135deg, var(--accent-gold) 0%, #FDE68A 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
    max-width: 860px;
  }
  .banner-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 24px;
  }
  .banner-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
  }
  .breadcrumb {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 12px;
  }
  .breadcrumb a {
    color: var(--accent-gold);
  }
  .breadcrumb a:hover {
    text-decoration: underline;
  }
  .article-layout {
    display: flex;
    gap: 40px;
    align-items: flex-start;
  }
  .article-main {
    flex: 1 1 780px;
    min-width: 0;
  }
  .article-sidebar {
    flex: 0 0 320px;
    display: flex;
    flex-direction: column;
    gap: 28px;
    position: sticky;
    top: 100px;
  }
  .article-card {
    background: var(--bg-card);
    border: 1px solid var(--border-gold-20);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-card);
    margin-bottom: 36px;
  }
  .article-body {
    font-size: 1.05rem;
    line-height: 1.75;
    color: var(--text-secondary);
  }
  .article-body h2 {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.8rem;
    color: var(--accent-gold);
    margin-top: 36px;
    margin-bottom: 16px;
    line-height: 1.3;
  }
  .article-body h3 {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.35rem;
    color: var(--accent-gold-light);
    margin-top: 28px;
    margin-bottom: 12px;
  }
  .article-body p {
    margin-bottom: 16px;
  }
  .article-body ul, .article-body ol {
    margin-left: 24px;
    margin-bottom: 16px;
  }
  .article-body li {
    margin-bottom: 8px;
  }
  .article-body strong {
    color: var(--text-primary);
    font-weight: 600;
  }
  .article-body a {
    color: var(--accent-gold);
    text-decoration: underline;
  }
  .sidebar-card {
    background: var(--bg-card);
    border: 1px solid var(--border-gold-20);
    border-radius: var(--radius-md);
    padding: 24px;
    box-shadow: var(--shadow-card);
  }
  .sidebar-card h4 {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--accent-gold);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-gold-20);
  }
  .sidebar-card ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
  }
  .sidebar-card ul li a {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 0.95rem;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
  }
  .sidebar-card ul li a:hover {
    background: rgba(245, 158, 11, 0.08);
    color: var(--accent-gold);
  }
  .related-post-item {
    display: flex;
    gap: 12px;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-gold-20);
  }
  .related-post-item:last-child {
    border-bottom: none;
  }
  .related-post-item img {
    width: 60px;
    height: 60px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
  }
  .related-post-item span {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
  }
  .related-post-item:hover span {
    color: var(--accent-gold);
  }
  .cta-section {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    border-top: 2px solid var(--border-gold-30);
    padding: 56px 0;
    text-align: center;
  }
  .cta-section h3 {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent-gold);
    margin-bottom: 12px;
  }
  .cta-section p {
    color: var(--text-secondary);
    margin-bottom: 28px;
    font-size: 1.05rem;
  }
  .btn-primary-gold {
    display: inline-flex;
    align-items: center;
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1rem;
    background: linear-gradient(135deg, var(--accent-gold) 0%, #B45309 100%);
    color: #051F14;
    border: none;
    cursor: pointer;
    box-shadow: var(--shadow-gold);
    transition: all var(--transition-fast);
  }
  .btn-primary-gold:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(245, 158, 11, 0.5);
  }
  .article-footer-tags {
    margin-top: 28px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
  }
  .tag-label {
    font-weight: 600;
    color: var(--accent-gold);
    font-size: 0.9rem;
  }
  .tag-item {
    display: inline-block;
    padding: 6px 16px;
    border-radius: 50px;
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid var(--border-gold-30);
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
  }
  .tag-item:hover {
    background: rgba(245, 158, 11, 0.2);
    color: var(--accent-gold);
  }
  .site-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-gold-20);
    padding: 48px 0 24px;
    font-size: 0.9rem;
    color: var(--text-muted);
  }
  .footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--border-gold-20);
    margin-bottom: 24px;
  }
  .footer-col h4 {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1rem;
    color: var(--accent-gold);
    margin-bottom: 14px;
  }
  .footer-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
  }
  .footer-col ul li a {
    color: var(--text-secondary);
    transition: color var(--transition-fast);
  }
  .footer-col ul li a:hover {
    color: var(--accent-gold);
  }
  .footer-bottom {
    text-align: center;
    font-size: 0.85rem;
  }
  .fab-left {
    position: fixed;
    left: 24px;
    bottom: 96px;
    z-index: 50;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, #F59E0B, #8B4513);
    border: 2px solid var(--accent-gold);
    box-shadow: var(--shadow-gold);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    animation: floatSlow 3s ease-in-out infinite;
  }
  .fab-left:hover {
    transform: scale(1.1);
    box-shadow: 0 12px 30px rgba(245, 158, 11, 0.5);
  }
  .fab-notification {
    position: absolute;
    top: -4px;
    right: -4px;
    width: 14px;
    height: 14px;
    background: var(--accent-red);
    border-radius: 50%;
    border: 2px solid #fff;
  }
  @keyframes floatSlow {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
  }
  @media (max-width: 1024px) {
    .article-layout {
      flex-direction: column;
    }
    .article-sidebar {
      flex: 1 1 auto;
      width: 100%;
      position: static;
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }
    .footer-grid {
      grid-template-columns: repeat(2, 1fr);
    }
  }
  @media (max-width: 768px) {
    .nav-links {
      display: none;
    }
    .mobile-menu-btn {
      display: block;
    }
    .article-sidebar {
      grid-template-columns: 1fr;
    }
    .banner-meta {
      flex-direction: column;
      gap: 10px;
    }
    .header-actions .btn-login,
    .header-actions .btn-signup {
      font-size: 0.8rem;
      padding: 6px 16px;
    }
  }
  @media (max-width: 520px) {
    .container {
      padding-left: 16px;
      padding-right: 16px;
    }
    .article-card {
      padding: 20px;
    }
    .footer-grid {
      grid-template-columns: 1fr;
    }
    .logo {
      font-size: 1.1rem;
    }
  }

/* roulang page: category1 */
:root {
      --bg-primary: #051F14;
      --bg-secondary: #0B2E1E;
      --bg-card: #083720;
      --accent-gold: #F59E0B;
      --accent-gold-light: #FCD34D;
      --accent-red: #DC2626;
      --text-primary: #F8FAFC;
      --text-secondary: #D1FAE5;
      --text-muted: #A3A375;
      --border-gold-30: rgba(245, 158, 11, 0.3);
      --border-gold-20: rgba(245, 158, 11, 0.2);
      --shadow-gold: 0 6px 25px rgba(245, 158, 11, 0.35);
      --shadow-card: 0 14px 32px rgba(0, 0, 0, 0.6);
      --font-heading: 'Be Vietnam Pro', sans-serif;
      --font-body: 'Inter', sans-serif;
      --radius-sm: 12px;
      --radius-md: 20px;
      --radius-lg: 28px;
      --radius-xl: 36px;
      --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
      --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    }
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
    body {
      background-color: var(--bg-primary);
      color: var(--text-primary);
      font-family: var(--font-body);
      line-height: 1.6;
      overflow-x: hidden;
      min-height: 100vh;
    }
    img { max-width: 100%; height: auto; display: block; }
    a { text-decoration: none; color: inherit; transition: color var(--transition-fast); }
    .container {
      max-width: 1320px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }
    .section-spacing { padding-top: 88px; padding-bottom: 88px; }
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      background: rgba(5, 31, 20, 0.92);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border-bottom: 1px solid var(--border-gold-20);
      z-index: 100;
      transition: background var(--transition-smooth);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 68px;
    }
    .logo {
      font-family: var(--font-heading);
      font-weight: 800;
      font-size: 1.4rem;
      letter-spacing: -0.5px;
      background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-gold-light) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      white-space: nowrap;
    }
    .nav-links { display: flex; align-items: center; gap: 36px; }
    .nav-links a {
      font-weight: 500;
      font-size: 0.95rem;
      color: var(--text-secondary);
      transition: color var(--transition-fast), opacity var(--transition-fast);
      position: relative;
      padding: 6px 0;
    }
    .nav-links a:hover, .nav-links a.active { color: var(--accent-gold); }
    .nav-links a.active::after {
      content: '';
      position: absolute;
      bottom: -2px;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--accent-gold);
      border-radius: 2px;
    }
    .header-actions { display: flex; align-items: center; gap: 12px; }
    .btn-login {
      padding: 8px 20px;
      border-radius: 50px;
      font-weight: 600;
      font-size: 0.9rem;
      background: transparent;
      border: 1.5px solid var(--accent-gold);
      color: var(--accent-gold);
      cursor: pointer;
      transition: all var(--transition-fast);
    }
    .btn-login:hover { background: var(--accent-gold); color: #051F14; }
    .btn-signup {
      padding: 8px 24px;
      border-radius: 50px;
      font-weight: 700;
      font-size: 0.9rem;
      background: linear-gradient(135deg, var(--accent-gold) 0%, #D97706 100%);
      color: #051F14;
      border: none;
      cursor: pointer;
      box-shadow: 0 4px 14px rgba(245, 158, 11, 0.3);
      transition: all var(--transition-fast);
    }
    .btn-signup:hover { transform: translateY(-1px); box-shadow: 0 8px 22px rgba(245, 158, 11, 0.45); }
    .mobile-menu-btn { display: none; background: none; border: none; color: var(--text-primary); font-size: 1.6rem; cursor: pointer; padding: 4px; }
    .hero-section { padding-top: 140px; padding-bottom: 80px; position: relative; overflow: hidden; }
    .hero-bg {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-image: url('/assets/images/backpic/back-2.jpg');
      background-size: cover;
      background-position: center;
      opacity: 0.18;
      z-index: 0;
    }
    .hero-content { position: relative; z-index: 2; display: flex; align-items: center; gap: 48px; flex-wrap: wrap; }
    .hero-text { flex: 1 1 500px; }
    .hero-badge {
      display: inline-block;
      padding: 8px 18px;
      background: rgba(220, 38, 38, 0.15);
      border: 1px solid var(--accent-red);
      border-radius: 50px;
      font-size: 0.85rem;
      font-weight: 600;
      color: #FECACA;
      margin-bottom: 20px;
      letter-spacing: 0.5px;
    }
    .hero-text h1 {
      font-family: var(--font-heading);
      font-size: clamp(2.3rem, 5vw, 3.4rem);
      font-weight: 800;
      line-height: 1.2;
      background: linear-gradient(135deg, var(--accent-gold) 0%, #FDE68A 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      margin-bottom: 20px;
    }
    .hero-description { font-size: 1.15rem; color: var(--text-secondary); line-height: 1.7; margin-bottom: 32px; max-width: 620px; }
    .hero-cta-group { display: flex; gap: 16px; flex-wrap: wrap; }
    .btn-primary-gold {
      display: inline-flex;
      align-items: center;
      padding: 14px 32px;
      border-radius: 50px;
      font-weight: 700;
      font-size: 1rem;
      background: linear-gradient(135deg, var(--accent-gold) 0%, #B45309 100%);
      color: #051F14;
      border: none;
      cursor: pointer;
      box-shadow: var(--shadow-gold);
      transition: all var(--transition-fast);
    }
    .btn-primary-gold:hover { transform: translateY(-3px); box-shadow: 0 12px 30px rgba(245, 158, 11, 0.5); }
    .btn-outline-gold {
      display: inline-flex;
      align-items: center;
      padding: 14px 32px;
      border-radius: 50px;
      font-weight: 600;
      font-size: 1rem;
      background: transparent;
      border: 1.5px solid var(--accent-gold);
      color: var(--accent-gold);
      cursor: pointer;
      transition: all var(--transition-fast);
    }
    .btn-outline-gold:hover { background: rgba(245, 158, 11, 0.1); }
    .hero-cards-stack { flex: 1 1 420px; position: relative; min-height: 400px; }
    .hero-main-card {
      background: rgba(8, 55, 32, 0.85);
      backdrop-filter: blur(12px);
      border: 1px solid var(--border-gold-30);
      border-radius: var(--radius-lg);
      padding: 32px;
      position: relative;
      z-index: 3;
      box-shadow: var(--shadow-card);
    }
    .hero-main-card h3 { font-family: var(--font-heading); font-weight: 700; font-size: 1.3rem; margin-bottom: 10px; color: var(--accent-gold); }
    .hero-main-card p { color: var(--text-secondary); font-size: 0.95rem; margin-bottom: 16px; }
    .timer-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: var(--accent-red);
      color: #fff;
      padding: 10px 20px;
      border-radius: 50px;
      font-weight: 700;
      font-size: 0.95rem;
      margin-bottom: 18px;
    }
    .section-title {
      font-family: var(--font-heading);
      font-size: clamp(1.8rem, 4vw, 2.4rem);
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--text-primary);
    }
    .section-subtitle { color: var(--text-muted); font-size: 1.05rem; margin-bottom: 48px; max-width: 700px; }
    .game-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 24px; }
    .game-card {
      background: var(--bg-card);
      border: 1px solid var(--border-gold-20);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: all var(--transition-smooth);
      box-shadow: var(--shadow-card);
      cursor: pointer;
    }
    .game-card:hover { transform: translateY(-6px); border-color: var(--border-gold-30); box-shadow: 0 18px 40px rgba(0,0,0,0.7); }
    .game-card-img { height: 200px; overflow: hidden; position: relative; }
    .game-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--transition-smooth); }
    .game-card:hover .game-card-img img { transform: scale(1.06); }
    .game-card-body { padding: 20px; }
    .game-card-tag {
      display: inline-block;
      padding: 4px 12px;
      background: var(--accent-red);
      color: #fff;
      border-radius: 6px;
      font-size: 0.75rem;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .game-card-body h3 { font-family: var(--font-heading); font-weight: 700; font-size: 1.15rem; margin-bottom: 8px; }
    .game-card-body p { color: var(--text-muted); font-size: 0.9rem; line-height: 1.5; }
    .stats-row { display: flex; gap: 16px; margin-top: 12px; flex-wrap: wrap; }
    .stat-badge {
      background: rgba(245, 158, 11, 0.08);
      border: 1px solid var(--border-gold-20);
      border-radius: 30px;
      padding: 6px 14px;
      font-size: 0.82rem;
      font-weight: 600;
      color: var(--accent-gold);
    }
    .feature-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 24px; margin-top: 32px; }
    .feature-item {
      background: var(--bg-card);
      border: 1px solid var(--border-gold-20);
      border-radius: var(--radius-md);
      padding: 28px;
      text-align: left;
      transition: all var(--transition-smooth);
    }
    .feature-item:hover { border-color: var(--accent-gold); }
    .feature-icon { font-size: 2.2rem; color: var(--accent-gold); margin-bottom: 16px; }
    .feature-item h3 { font-weight: 700; font-size: 1.15rem; margin-bottom: 8px; }
    .feature-item p { color: var(--text-muted); font-size: 0.92rem; }
    .highlight-block {
      background: linear-gradient(135deg, rgba(245,158,11,0.06) 0%, rgba(8,55,32,0.8) 100%);
      border: 1px solid var(--border-gold-30);
      border-radius: var(--radius-lg);
      padding: 40px;
      display: flex;
      gap: 32px;
      flex-wrap: wrap;
      align-items: center;
    }
    .highlight-text { flex: 1 1 320px; }
    .highlight-text h2 { font-family: var(--font-heading); font-weight: 700; font-size: 1.8rem; margin-bottom: 14px; }
    .highlight-text p { color: var(--text-secondary); line-height: 1.65; }
    .highlight-img { flex: 0 0 280px; border-radius: var(--radius-md); overflow: hidden; }
    .highlight-img img { width: 100%; border-radius: var(--radius-md); }
    .faq-section { margin-top: 64px; }
    .faq-item { border-bottom: 1px solid var(--border-gold-20); padding: 24px 0; }
    .faq-question {
      font-weight: 700;
      font-size: 1.1rem;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      color: var(--text-primary);
    }
    .faq-answer { color: var(--text-muted); margin-top: 12px; display: none; line-height: 1.7; }
    .faq-item.open .faq-answer { display: block; }
    .news-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 24px; margin-top: 32px; }
    .news-card {
      background: var(--bg-card);
      border: 1px solid var(--border-gold-20);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: all var(--transition-smooth);
    }
    .news-card:hover { border-color: var(--accent-gold); transform: translateY(-4px); }
    .news-card-img { height: 180px; overflow: hidden; }
    .news-card-img img { width: 100%; height: 100%; object-fit: cover; }
    .news-card-body { padding: 20px; }
    .news-card-body h3 { font-weight: 700; font-size: 1.05rem; margin-bottom: 8px; }
    .news-card-body p { color: var(--text-muted); font-size: 0.9rem; }
    .btn-more {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      margin-top: 24px;
      color: var(--accent-gold);
      font-weight: 600;
      transition: color var(--transition-fast);
    }
    .btn-more:hover { color: var(--accent-gold-light); }
    .site-footer { background: var(--bg-secondary); border-top: 1px solid var(--border-gold-20); padding: 56px 0 24px; margin-top: 80px; }
    .footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 32px; }
    .footer-col h4 { font-family: var(--font-heading); font-weight: 700; font-size: 1rem; margin-bottom: 16px; color: var(--accent-gold); }
    .footer-col ul { list-style: none; padding: 0; }
    .footer-col li { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 10px; }
    .footer-col a { color: var(--text-muted); transition: all var(--transition-fast); }
    .footer-col a:hover { color: var(--accent-gold); }
    .footer-bottom { margin-top: 40px; padding-top: 20px; border-top: 1px solid var(--border-gold-20); text-align: center; color: var(--text-muted); font-size: 0.85rem; }
    .fab-left {
      position: fixed;
      left: 24px;
      bottom: 96px;
      z-index: 50;
      width: 56px;
      height: 56px;
      border-radius: 50%;
      background: linear-gradient(135deg, #051F14 0%, #083720 100%);
      border: 2px solid var(--accent-gold);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.6rem;
      color: var(--accent-gold);
      cursor: pointer;
      box-shadow: var(--shadow-gold);
      transition: all var(--transition-fast);
      opacity: 0.8;
    }
    .fab-left:hover { opacity: 1; transform: scale(1.1); }
    .fab-left .notification-dot {
      position: absolute;
      top: 6px;
      right: 6px;
      width: 14px;
      height: 14px;
      background: var(--accent-red);
      border-radius: 50%;
      border: 2px solid #fff;
    }
    @media (max-width: 1024px) {
      .nav-links { gap: 24px; }
      .hero-content { flex-direction: column; }
      .hero-cards-stack { min-height: auto; flex: 1 1 100%; }
    }
    @media (max-width: 768px) {
      .nav-links { display: none; }
      .mobile-menu-btn { display: block; }
      .hero-section { padding-top: 120px; padding-bottom: 60px; }
      .section-spacing { padding-top: 56px; padding-bottom: 56px; }
      .highlight-block { flex-direction: column; padding: 24px; }
      .highlight-img { flex: 0 0 auto; width: 100%; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 520px) {
      .container { padding-left: 16px; padding-right: 16px; }
      .hero-text h1 { font-size: 1.9rem; }
      .hero-cta-group { flex-direction: column; }
      .header-actions .btn-login, .header-actions .btn-signup { padding: 6px 14px; font-size: 0.8rem; }
      .game-grid { grid-template-columns: 1fr; }
      .feature-list { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
    }

/* roulang page: category2 */
:root {
      --bg-primary: #051F14;
      --bg-secondary: #0B2E1E;
      --bg-card: #083720;
      --accent-gold: #F59E0B;
      --accent-gold-light: #FCD34D;
      --accent-red: #DC2626;
      --text-primary: #F8FAFC;
      --text-secondary: #D1FAE5;
      --text-muted: #A3A375;
      --border-gold-30: rgba(245, 158, 11, 0.3);
      --border-gold-20: rgba(245, 158, 11, 0.2);
      --shadow-gold: 0 6px 25px rgba(245, 158, 11, 0.35);
      --shadow-card: 0 14px 32px rgba(0, 0, 0, 0.6);
      --font-heading: 'Be Vietnam Pro', sans-serif;
      --font-body: 'Inter', sans-serif;
      --radius-sm: 12px;
      --radius-md: 20px;
      --radius-lg: 28px;
      --radius-xl: 36px;
      --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
      --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    }
    html {
      scroll-behavior: smooth;
      -webkit-text-size-adjust: 100%;
    }
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    body {
      background-color: var(--bg-primary);
      color: var(--text-primary);
      font-family: var(--font-body);
      line-height: 1.6;
      overflow-x: hidden;
      min-height: 100vh;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: color var(--transition-fast);
    }
    .container {
      max-width: 1320px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }
    .section-spacing {
      padding-top: 88px;
      padding-bottom: 88px;
    }
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      background: rgba(5, 31, 20, 0.92);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border-bottom: 1px solid var(--border-gold-20);
      z-index: 100;
      transition: background var(--transition-smooth);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 68px;
    }
    .logo {
      font-family: var(--font-heading);
      font-weight: 800;
      font-size: 1.4rem;
      letter-spacing: -0.5px;
      background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-gold-light) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      white-space: nowrap;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 36px;
    }
    .nav-links a {
      font-weight: 500;
      font-size: 0.95rem;
      color: var(--text-secondary);
      transition: color var(--transition-fast), opacity var(--transition-fast);
      position: relative;
      padding: 6px 0;
    }
    .nav-links a:hover,
    .nav-links a.active {
      color: var(--accent-gold);
    }
    .nav-links a.active::after {
      content: '';
      position: absolute;
      bottom: -2px;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--accent-gold);
      border-radius: 2px;
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn-login {
      padding: 8px 20px;
      border-radius: 50px;
      font-weight: 600;
      font-size: 0.9rem;
      background: transparent;
      border: 1.5px solid var(--accent-gold);
      color: var(--accent-gold);
      cursor: pointer;
      transition: all var(--transition-fast);
      font-family: var(--font-body);
    }
    .btn-login:hover {
      background: var(--accent-gold);
      color: #051F14;
    }
    .btn-signup {
      padding: 8px 24px;
      border-radius: 50px;
      font-weight: 700;
      font-size: 0.9rem;
      background: linear-gradient(135deg, var(--accent-gold) 0%, #D97706 100%);
      color: #051F14;
      border: none;
      cursor: pointer;
      box-shadow: 0 4px 14px rgba(245, 158, 11, 0.3);
      transition: all var(--transition-fast);
      font-family: var(--font-body);
    }
    .btn-signup:hover {
      transform: translateY(-1px);
      box-shadow: 0 8px 22px rgba(245, 158, 11, 0.45);
    }
    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      color: var(--text-primary);
      font-size: 1.6rem;
      cursor: pointer;
      padding: 4px;
    }
    .page-banner {
      padding-top: 150px;
      padding-bottom: 60px;
      position: relative;
      overflow: hidden;
    }
    .banner-bg {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-image: url('/assets/images/backpic/back-3.jpg');
      background-size: cover;
      background-position: center;
      opacity: 0.16;
      z-index: 0;
    }
    .banner-content {
      position: relative;
      z-index: 2;
    }
    .banner-badge {
      display: inline-block;
      padding: 8px 18px;
      background: rgba(220, 38, 38, 0.12);
      border: 1px solid rgba(220, 38, 38, 0.5);
      border-radius: 50px;
      font-size: 0.85rem;
      font-weight: 600;
      color: #FECACA;
      margin-bottom: 16px;
      letter-spacing: 0.5px;
    }
    .banner-content h1 {
      font-family: var(--font-heading);
      font-size: clamp(2.2rem, 4.5vw, 3rem);
      font-weight: 800;
      line-height: 1.25;
      background: linear-gradient(135deg, var(--accent-gold) 0%, #FDE68A 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      margin-bottom: 16px;
    }
    .banner-sub {
      font-size: 1.1rem;
      color: var(--text-secondary);
      max-width: 680px;
      line-height: 1.7;
    }
    .cards-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
      gap: 28px;
    }
    .hall-card {
      background: var(--bg-card);
      border: 1px solid var(--border-gold-20);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: all var(--transition-smooth);
      box-shadow: var(--shadow-card);
    }
    .hall-card:hover {
      transform: translateY(-6px);
      border-color: var(--border-gold-30);
      box-shadow: 0 18px 40px rgba(0, 0, 0, 0.7);
    }
    .hall-card-img {
      width: 100%;
      height: 220px;
      object-fit: cover;
      background: var(--bg-secondary);
    }
    .hall-card-body {
      padding: 24px;
    }
    .hall-card-body h3 {
      font-family: var(--font-heading);
      font-weight: 700;
      font-size: 1.2rem;
      margin-bottom: 8px;
      color: var(--accent-gold);
    }
    .hall-card-body p {
      color: var(--text-secondary);
      font-size: 0.95rem;
      line-height: 1.6;
      margin-bottom: 16px;
    }
    .hall-card-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 16px;
    }
    .tag {
      display: inline-block;
      padding: 4px 12px;
      font-size: 0.8rem;
      font-weight: 600;
      border-radius: 50px;
      background: rgba(245, 158, 11, 0.1);
      border: 1px solid var(--border-gold-20);
      color: var(--accent-gold-light);
    }
    .tag-hot {
      background: rgba(220, 38, 38, 0.15);
      border-color: var(--accent-red);
      color: #FECACA;
    }
    .btn-card-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-weight: 600;
      font-size: 0.9rem;
      color: var(--accent-gold);
      transition: gap var(--transition-fast);
    }
    .btn-card-link:hover {
      gap: 10px;
    }
    .info-block {
      background: var(--bg-card);
      border: 1px solid var(--border-gold-20);
      border-radius: var(--radius-lg);
      padding: 40px;
    }
    .info-block h2 {
      font-family: var(--font-heading);
      font-size: 2rem;
      font-weight: 800;
      color: var(--text-primary);
      margin-bottom: 20px;
    }
    .info-block p {
      color: var(--text-secondary);
      font-size: 1rem;
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .metric-row {
      display: flex;
      flex-wrap: wrap;
      gap: 28px;
    }
    .metric-item {
      flex: 1 1 180px;
      background: rgba(255, 255, 255, 0.03);
      border-radius: var(--radius-sm);
      padding: 20px;
      text-align: center;
    }
    .metric-value {
      font-family: var(--font-heading);
      font-size: 2rem;
      font-weight: 800;
      color: var(--accent-gold);
    }
    .metric-label {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-top: 4px;
    }
    .faq-section {}
    .faq-item {
      border-bottom: 1px solid var(--border-gold-20);
      padding: 24px 0;
    }
    .faq-question {
      font-family: var(--font-heading);
      font-weight: 700;
      font-size: 1.15rem;
      margin-bottom: 10px;
      color: var(--text-primary);
      cursor: default;
    }
    .faq-answer {
      color: var(--text-secondary);
      line-height: 1.7;
    }
    .cta-bar {
      background: var(--bg-card);
      border: 1px solid var(--border-gold-30);
      border-radius: var(--radius-lg);
      padding: 48px;
      text-align: center;
    }
    .cta-bar h2 {
      font-family: var(--font-heading);
      font-size: 2rem;
      font-weight: 800;
      color: var(--accent-gold);
      margin-bottom: 16px;
    }
    .cta-bar p {
      color: var(--text-secondary);
      margin-bottom: 28px;
    }
    .news-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
      gap: 24px;
    }
    .news-card {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-gold-20);
      transition: var(--transition-smooth);
    }
    .news-card:hover {
      border-color: var(--border-gold-30);
      transform: translateY(-4px);
    }
    .news-card-img {
      width: 100%;
      height: 180px;
      object-fit: cover;
    }
    .news-card-body {
      padding: 20px;
    }
    .news-card-body .news-date {
      font-size: 0.8rem;
      color: var(--text-muted);
      margin-bottom: 6px;
    }
    .news-card-body h4 {
      font-weight: 700;
      font-size: 1rem;
      line-height: 1.4;
      color: var(--text-primary);
      margin-bottom: 8px;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .site-footer {
      background: var(--bg-secondary);
      border-top: 1px solid var(--border-gold-20);
      padding: 64px 0 28px;
      margin-top: 80px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 36px;
      margin-bottom: 40px;
    }
    .footer-col h4 {
      font-family: var(--font-heading);
      font-weight: 700;
      font-size: 1.1rem;
      color: var(--accent-gold);
      margin-bottom: 16px;
    }
    .footer-col ul {
      list-style: none;
    }
    .footer-col ul li {
      color: var(--text-secondary);
      font-size: 0.9rem;
      margin-bottom: 10px;
      line-height: 1.5;
    }
    .footer-col ul li a {
      color: var(--text-secondary);
    }
    .footer-col ul li a:hover {
      color: var(--accent-gold);
    }
    .footer-bottom {
      text-align: center;
      padding-top: 28px;
      border-top: 1px solid var(--border-gold-20);
    }
    .footer-bottom p {
      font-size: 0.85rem;
      color: var(--text-muted);
    }
    .fab-float {
      position: fixed;
      left: 16px;
      bottom: 96px;
      z-index: 50;
      width: 56px;
      height: 56px;
      border-radius: 50%;
      background: linear-gradient(135deg, #0B2E1E 0%, #051F14 100%);
      border: 2px solid var(--accent-gold);
      box-shadow: var(--shadow-gold);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: all var(--transition-fast);
      font-size: 1.5rem;
      color: var(--accent-gold);
    }
    .fab-float:hover {
      transform: scale(1.1);
      box-shadow: 0 10px 30px rgba(245, 158, 11, 0.5);
    }
    @media (max-width: 1024px) {
      .nav-links {
        gap: 20px;
      }
      .cards-grid {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 68px;
        left: 0;
        width: 100%;
        background: rgba(5, 31, 20, 0.98);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        border-bottom: 1px solid var(--border-gold-20);
      }
      .nav-links.open {
        display: flex;
      }
      .mobile-menu-btn {
        display: block;
      }
      .header-actions {
        gap: 8px;
      }
      .btn-login, .btn-signup {
        padding: 6px 14px;
        font-size: 0.8rem;
      }
      .cards-grid {
        grid-template-columns: 1fr;
      }
      .info-block {
        padding: 24px;
      }
      .cta-bar {
        padding: 28px;
      }
    }
    @media (max-width: 520px) {
      .container {
        padding-left: 16px;
        padding-right: 16px;
      }
      .section-spacing {
        padding-top: 60px;
        padding-bottom: 60px;
      }
      .page-banner {
        padding-top: 120px;
      }
    }

/* roulang page: category3 */
:root {
            --bg-primary: #051F14;
            --bg-secondary: #0B2E1E;
            --bg-card: #083720;
            --accent-gold: #F59E0B;
            --accent-gold-light: #FCD34D;
            --accent-red: #DC2626;
            --text-primary: #F8FAFC;
            --text-secondary: #D1FAE5;
            --text-muted: #A3A375;
            --border-gold-30: rgba(245, 158, 11, 0.3);
            --border-gold-20: rgba(245, 158, 11, 0.2);
            --shadow-gold: 0 6px 25px rgba(245, 158, 11, 0.35);
            --shadow-card: 0 14px 32px rgba(0, 0, 0, 0.6);
            --font-heading: 'Be Vietnam Pro', sans-serif;
            --font-body: 'Inter', sans-serif;
            --radius-sm: 12px;
            --radius-md: 20px;
            --radius-lg: 28px;
            --radius-xl: 36px;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            background-color: var(--bg-primary);
            color: var(--text-primary);
            font-family: var(--font-body);
            line-height: 1.6;
            overflow-x: hidden;
            min-height: 100vh;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        .container {
            max-width: 1320px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .section-spacing {
            padding-top: 88px;
            padding-bottom: 88px;
        }
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(5, 31, 20, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-gold-20);
            z-index: 100;
            transition: background var(--transition-smooth);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .logo {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 1.4rem;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-gold-light) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 36px;
        }
        .nav-links a {
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            transition: color var(--transition-fast), opacity var(--transition-fast);
            position: relative;
            padding: 6px 0;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-gold);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--accent-gold);
            border-radius: 2px;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn-login {
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            background: transparent;
            border: 1.5px solid var(--accent-gold);
            color: var(--accent-gold);
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        .btn-login:hover {
            background: var(--accent-gold);
            color: #051F14;
        }
        .btn-signup {
            padding: 8px 24px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.9rem;
            background: linear-gradient(135deg, var(--accent-gold) 0%, #D97706 100%);
            color: #051F14;
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 14px rgba(245, 158, 11, 0.3);
            transition: all var(--transition-fast);
        }
        .btn-signup:hover {
            transform: translateY(-1px);
            box-shadow: 0 8px 22px rgba(245, 158, 11, 0.45);
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px;
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            width: 100%;
            background: rgba(5, 31, 20, 0.98);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-gold-20);
            flex-direction: column;
            padding: 20px 24px;
            gap: 16px;
            z-index: 99;
        }
        .mobile-menu.active {
            display: flex;
        }
        .mobile-menu a {
            font-weight: 500;
            font-size: 1rem;
            color: var(--text-secondary);
            padding: 8px 0;
        }
        .mobile-menu .header-actions-mobile {
            display: flex;
            gap: 12px;
            margin-top: 8px;
        }
        .page-hero {
            padding-top: 140px;
            padding-bottom: 60px;
            position: relative;
            overflow: hidden;
        }
        .hero-bg-image {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: url('/assets/images/backpic/back-4.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.16;
            z-index: 0;
        }
        .hero-content-wrapper {
            position: relative;
            z-index: 2;
        }
        .hero-badge-row {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            padding: 8px 20px;
            background: rgba(220, 38, 38, 0.12);
            border: 1px solid var(--accent-red);
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            color: #FECACA;
            margin-bottom: 24px;
            letter-spacing: 0.5px;
        }
        .hero-badge-row i {
            color: var(--accent-gold);
            font-size: 0.9rem;
        }
        .page-hero h1 {
            font-family: var(--font-heading);
            font-size: clamp(2.2rem, 4.5vw, 3rem);
            font-weight: 800;
            line-height: 1.25;
            background: linear-gradient(135deg, var(--accent-gold) 0%, #FDE68A 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 20px;
        }
        .hero-subtitle {
            font-size: 1.15rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 36px;
            max-width: 700px;
        }
        .hero-stat-row {
            display: flex;
            gap: 40px;
            flex-wrap: wrap;
        }
        .hero-stat-item {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .hero-stat-number {
            font-family: var(--font-heading);
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--accent-gold);
        }
        .hero-stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        .provider-card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
            gap: 28px;
        }
        .provider-card {
            background: var(--bg-card);
            border: 1px solid var(--border-gold-20);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-smooth);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
            position: relative;
        }
        .provider-card:hover {
            transform: translateY(-6px);
            border-color: var(--border-gold-30);
            box-shadow: 0 18px 40px rgba(0, 0, 0, 0.7), 0 0 20px rgba(245, 158, 11, 0.1);
        }
        .provider-card-image {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
            border-bottom: 2px solid var(--border-gold-20);
        }
        .provider-card-body {
            padding: 24px;
        }
        .provider-card-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.8px;
            background: rgba(245, 158, 11, 0.12);
            color: var(--accent-gold);
            border: 1px solid var(--border-gold-30);
            margin-bottom: 12px;
        }
        .provider-card-body h3 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.25rem;
            margin-bottom: 10px;
            color: var(--text-primary);
        }
        .provider-card-body p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 16px;
        }
        .provider-card-stats {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }
        .provider-card-stat {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            color: var(--text-secondary);
        }
        .provider-card-stat i {
            color: var(--accent-gold);
            font-size: 0.8rem;
        }
        .provider-card-rating {
            display: flex;
            align-items: center;
            gap: 6px;
            margin-top: 12px;
            font-weight: 700;
            color: var(--accent-gold-light);
        }
        .provider-detail-section {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-gold-20);
        }
        .detail-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: start;
        }
        .detail-text h2 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.8rem;
            margin-bottom: 20px;
            color: var(--accent-gold-light);
        }
        .detail-text p {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 16px;
        }
        .detail-list {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .detail-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 0.95rem;
            color: var(--text-secondary);
        }
        .detail-list li i {
            color: var(--accent-gold);
            margin-top: 3px;
            flex-shrink: 0;
        }
        .detail-image-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-gold-20);
            box-shadow: var(--shadow-card);
        }
        .detail-image-card img {
            width: 100%;
            height: 280px;
            object-fit: cover;
        }
        .detail-image-card-body {
            padding: 24px;
        }
        .trust-row {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 20px;
        }
        .trust-badge {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 18px;
            background: rgba(8, 55, 32, 0.6);
            border: 1px solid var(--border-gold-30);
            border-radius: var(--radius-sm);
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
        }
        .trust-badge i {
            color: var(--accent-gold);
        }
        .comparison-table-wrapper {
            overflow-x: auto;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-gold-20);
        }
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 800px;
        }
        .comparison-table th {
            background: var(--bg-card);
            padding: 16px 20px;
            text-align: left;
            font-family: var(--font-heading);
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--accent-gold);
            border-bottom: 2px solid var(--border-gold-30);
        }
        .comparison-table td {
            padding: 14px 20px;
            border-bottom: 1px solid var(--border-gold-20);
            font-size: 0.9rem;
            color: var(--text-secondary);
        }
        .comparison-table tr:hover td {
            background: rgba(245, 158, 11, 0.04);
        }
        .process-steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 24px;
        }
        .process-step {
            background: var(--bg-card);
            border: 1px solid var(--border-gold-20);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            text-align: left;
            transition: all var(--transition-fast);
            position: relative;
        }
        .process-step:hover {
            border-color: var(--accent-gold);
        }
        .process-step-number {
            font-family: var(--font-heading);
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--accent-gold);
            opacity: 0.3;
            line-height: 1;
            margin-bottom: 12px;
        }
        .process-step h4 {
            font-family: var(--font-heading);
            font-weight: 600;
            font-size: 1.1rem;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .process-step p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-gold-20);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--border-gold-30);
        }
        .faq-item h4 {
            font-family: var(--font-heading);
            font-weight: 600;
            font-size: 1.05rem;
            margin-bottom: 10px;
            color: var(--accent-gold-light);
        }
        .faq-item p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.65;
        }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 24px;
        }
        .news-card {
            background: var(--bg-card);
            border: 1px solid var(--border-gold-20);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .news-card:hover {
            border-color: var(--border-gold-30);
            transform: translateY(-4px);
        }
        .news-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        .news-card-body {
            padding: 20px;
        }
        .news-card-category {
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--accent-gold);
            text-transform: uppercase;
            letter-spacing: 0.8px;
            margin-bottom: 8px;
        }
        .news-card-body h4 {
            font-family: var(--font-heading);
            font-weight: 600;
            font-size: 1rem;
            margin-bottom: 8px;
            color: var(--text-primary);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card-body p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card-date {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .cta-banner {
            background: linear-gradient(135deg, rgba(245, 158, 11, 0.08) 0%, rgba(220, 38, 38, 0.06) 100%);
            border: 1px solid var(--border-gold-30);
            border-radius: var(--radius-lg);
            padding: 56px 40px;
            text-align: left;
        }
        .cta-banner h2 {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 2rem;
            margin-bottom: 16px;
            color: var(--accent-gold-light);
        }
        .cta-banner p {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 600px;
        }
        .cta-btn-group {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn-primary-gold {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            background: linear-gradient(135deg, var(--accent-gold) 0%, #B45309 100%);
            color: #051F14;
            border: none;
            cursor: pointer;
            box-shadow: var(--shadow-gold);
            transition: all var(--transition-fast);
        }
        .btn-primary-gold:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 30px rgba(245, 158, 11, 0.5);
        }
        .btn-outline-gold {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            background: transparent;
            border: 1.5px solid var(--accent-gold);
            color: var(--accent-gold);
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        .btn-outline-gold:hover {
            background: rgba(245, 158, 11, 0.1);
        }
        .section-header {
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 2rem;
            color: var(--accent-gold-light);
            margin-bottom: 12px;
        }
        .section-header p {
            font-size: 1.05rem;
            color: var(--text-muted);
            line-height: 1.6;
            max-width: 680px;
        }
        .site-footer {
            background: #020E0A;
            border-top: 2px solid var(--border-gold-20);
            padding: 56px 0 28px;
            margin-top: 80px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 36px;
            margin-bottom: 40px;
        }
        .footer-col h4 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--accent-gold);
            margin-bottom: 18px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul li,
        .footer-col ul li a {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .footer-col ul li a:hover {
            color: var(--accent-gold);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-gold-20);
            padding-top: 24px;
            text-align: left;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .fab-btn {
            position: fixed;
            left: 16px;
            bottom: 96px;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: radial-gradient(circle at 30% 30%, #FCD34D, #B45309);
            border: 2px solid var(--accent-gold);
            box-shadow: var(--shadow-gold);
            z-index: 50;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            opacity: 0.8;
            transition: all var(--transition-smooth);
            animation: fabFloat 3s ease-in-out infinite;
        }
        .fab-btn i {
            font-size: 1.4rem;
            color: #051F14;
            transition: transform 0.4s ease;
        }
        .fab-btn:hover {
            opacity: 1;
            transform: scale(1.12);
            box-shadow: 0 14px 35px rgba(245, 158, 11, 0.55);
        }
        .fab-btn:hover i {
            transform: rotate(360deg);
        }
        .fab-btn:active {
            transform: scale(0.94) translateY(2px);
        }
        @keyframes fabFloat {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-8px); }
        }
        .fab-notification {
            position: absolute;
            top: 2px;
            right: 2px;
            width: 14px;
            height: 14px;
            background: var(--accent-red);
            border-radius: 50%;
            border: 2px solid var(--bg-primary);
        }
        @media (max-width: 1024px) {
            .detail-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .faq-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .mobile-menu-btn {
                display: block;
            }
            .section-spacing {
                padding-top: 60px;
                padding-bottom: 60px;
            }
            .provider-card-grid {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr 1fr;
            }
            .hero-stat-row {
                gap: 20px;
            }
            .fab-btn {
                left: 12px;
                bottom: 80px;
                width: 50px;
                height: 50px;
            }
        }
        @media (max-width: 520px) {
            .process-steps {
                grid-template-columns: 1fr;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .header-actions .btn-signup,
            .header-actions .btn-login {
                padding: 7px 15px;
                font-size: 0.8rem;
            }
            .logo {
                font-size: 1.1rem;
            }
        }

/* roulang page: category4 */
/* Design System Variables */
    :root {
      --bg-primary: #051F14;
      --bg-secondary: #0B2E1E;
      --bg-card: #083720;
      --accent-gold: #F59E0B;
      --accent-gold-light: #FCD34D;
      --accent-red: #DC2626;
      --text-primary: #F8FAFC;
      --text-secondary: #D1FAE5;
      --text-muted: #A3A375;
      --border-gold-30: rgba(245, 158, 11, 0.3);
      --border-gold-20: rgba(245, 158, 11, 0.2);
      --shadow-gold: 0 6px 25px rgba(245, 158, 11, 0.35);
      --shadow-card: 0 14px 32px rgba(0, 0, 0, 0.6);
      --font-heading: 'Be Vietnam Pro', sans-serif;
      --font-body: 'Inter', sans-serif;
      --radius-sm: 12px;
      --radius-md: 20px;
      --radius-lg: 28px;
      --radius-xl: 36px;
      --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
      --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    }

    /* Reset & Base */
    *, *::before, *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    html {
      scroll-behavior: smooth;
      -webkit-text-size-adjust: 100%;
    }

    body {
      background-color: var(--bg-primary);
      color: var(--text-primary);
      font-family: var(--font-body);
      line-height: 1.65;
      overflow-x: hidden;
      min-height: 100vh;
    }

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

    a {
      text-decoration: none;
      color: inherit;
      transition: color var(--transition-fast);
    }

    .container {
      max-width: 1320px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    .section-spacing {
      padding-top: 80px;
      padding-bottom: 80px;
    }

    /* Header & Navigation */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      background: rgba(5, 31, 20, 0.92);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border-bottom: 1px solid var(--border-gold-20);
      z-index: 100;
      transition: background var(--transition-smooth);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 68px;
    }

    .logo {
      font-family: var(--font-heading);
      font-weight: 800;
      font-size: 1.25rem;
      letter-spacing: -0.5px;
      background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-gold-light) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      white-space: nowrap;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 32px;
    }

    .nav-links a {
      font-weight: 500;
      font-size: 0.9rem;
      color: var(--text-secondary);
      transition: color var(--transition-fast);
      position: relative;
      padding: 6px 0;
    }

    .nav-links a:hover,
    .nav-links a.active {
      color: var(--accent-gold);
    }

    .nav-links a.active::after {
      content: '';
      position: absolute;
      bottom: -2px;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--accent-gold);
      border-radius: 2px;
    }

    .header-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .btn-login {
      padding: 8px 20px;
      border-radius: 50px;
      font-weight: 600;
      font-size: 0.85rem;
      background: transparent;
      border: 1.5px solid var(--accent-gold);
      color: var(--accent-gold);
      cursor: pointer;
      transition: all var(--transition-fast);
      font-family: var(--font-body);
    }

    .btn-login:hover {
      background: var(--accent-gold);
      color: #051F14;
    }

    .btn-signup {
      padding: 8px 22px;
      border-radius: 50px;
      font-weight: 700;
      font-size: 0.85rem;
      background: linear-gradient(135deg, var(--accent-gold) 0%, #D97706 100%);
      color: #051F14;
      border: none;
      cursor: pointer;
      box-shadow: 0 4px 14px rgba(245, 158, 11, 0.3);
      transition: all var(--transition-fast);
      font-family: var(--font-body);
    }

    .btn-signup:hover {
      transform: translateY(-1px);
      box-shadow: 0 8px 22px rgba(245, 158, 11, 0.45);
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      color: var(--text-primary);
      font-size: 1.6rem;
      cursor: pointer;
      padding: 4px;
    }

    /* Category Hero */
    .category-hero {
      padding-top: 140px;
      padding-bottom: 60px;
      position: relative;
      overflow: hidden;
      background: linear-gradient(135deg, #061E12 0%, #0E2B1C 100%);
    }

    .category-hero-bg {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-image: url('/assets/images/backpic/back-4.jpg');
      background-size: cover;
      background-position: center;
      opacity: 0.12;
      z-index: 0;
    }

    .category-hero-content {
      position: relative;
      z-index: 2;
      max-width: 900px;
    }

    .cat-badge {
      display: inline-block;
      padding: 6px 16px;
      background: rgba(245, 158, 11, 0.12);
      border: 1px solid var(--border-gold-30);
      border-radius: 50px;
      font-size: 0.8rem;
      font-weight: 600;
      color: var(--accent-gold-light);
      margin-bottom: 16px;
      letter-spacing: 0.5px;
    }

    .category-hero h1 {
      font-family: var(--font-heading);
      font-size: clamp(2.2rem, 4.8vw, 3rem);
      font-weight: 800;
      line-height: 1.25;
      color: var(--text-primary);
      margin-bottom: 16px;
    }

    .category-hero .subtitle {
      font-size: 1.1rem;
      color: var(--text-secondary);
      line-height: 1.65;
      max-width: 680px;
    }

    /* Provider Rating Card */
    .provider-card {
      background: var(--bg-card);
      border: 1px solid var(--border-gold-20);
      border-radius: var(--radius-md);
      padding: 28px;
      display: flex;
      gap: 24px;
      flex-wrap: wrap;
      align-items: flex-start;
      transition: all var(--transition-smooth);
      position: relative;
      overflow: hidden;
    }

    .provider-card:hover {
      border-color: var(--border-gold-30);
      transform: translateY(-4px);
      box-shadow: var(--shadow-card);
    }

    .provider-card::before {
      content: '';
      position: absolute;
      top: 0;
      right: 0;
      width: 120px;
      height: 120px;
      background: radial-gradient(circle, rgba(245, 158, 11, 0.08) 0%, transparent 70%);
      pointer-events: none;
    }

    .provider-rank {
      flex: 0 0 64px;
      width: 64px;
      height: 64px;
      border-radius: var(--radius-sm);
      background: linear-gradient(135deg, var(--accent-gold) 0%, #B45309 100%);
      display: flex;
      align-items: center;
      justify-content: center;
      font-family: var(--font-heading);
      font-weight: 800;
      font-size: 1.8rem;
      color: #051F14;
      box-shadow: var(--shadow-gold);
    }

    .provider-info {
      flex: 1;
      min-width: 260px;
    }

    .provider-info h3 {
      font-family: var(--font-heading);
      font-weight: 700;
      font-size: 1.3rem;
      margin-bottom: 8px;
      color: var(--text-primary);
    }

    .provider-stats {
      display: flex;
      gap: 20px;
      flex-wrap: wrap;
      margin: 10px 0 12px;
    }

    .provider-stat {
      display: flex;
      align-items: center;
      gap: 6px;
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    .provider-stat i {
      color: var(--accent-gold);
      font-size: 0.9rem;
    }

    .provider-desc {
      font-size: 0.95rem;
      color: var(--text-secondary);
      line-height: 1.6;
      margin-bottom: 12px;
    }

    .star-rating {
      display: flex;
      gap: 3px;
      color: var(--accent-gold);
      font-size: 1rem;
    }

    /* Pros / Cons Grid */
    .feature-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 28px;
      margin-top: 32px;
    }

    .feature-card {
      background: var(--bg-card);
      border: 1px solid var(--border-gold-20);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      transition: all var(--transition-fast);
    }

    .feature-card:hover {
      border-color: var(--border-gold-30);
    }

    .feature-card h3 {
      font-family: var(--font-heading);
      font-weight: 700;
      font-size: 1.1rem;
      color: var(--accent-gold-light);
      margin-bottom: 12px;
    }

    .feature-card p {
      font-size: 0.92rem;
      color: var(--text-secondary);
      line-height: 1.65;
    }

    /* Trust Badges */
    .trust-badges {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
      margin-top: 16px;
    }

    .trust-badge {
      padding: 8px 16px;
      background: rgba(245, 158, 11, 0.08);
      border: 1px solid var(--border-gold-20);
      border-radius: 50px;
      font-size: 0.8rem;
      font-weight: 600;
      color: var(--accent-gold-light);
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .trust-badge i {
      font-size: 0.9rem;
    }

    /* CTA Banner */
    .cta-banner {
      background: linear-gradient(135deg, #0A2819 0%, #0F3B24 100%);
      border: 1px solid var(--border-gold-30);
      border-radius: var(--radius-lg);
      padding: 44px 36px;
      text-align: left;
      position: relative;
      overflow: hidden;
    }

    .cta-banner::before {
      content: '';
      position: absolute;
      top: -40px;
      right: -40px;
      width: 180px;
      height: 180px;
      background: radial-gradient(circle, rgba(245, 158, 11, 0.15) 0%, transparent 70%);
      pointer-events: none;
    }

    .cta-banner h2 {
      font-family: var(--font-heading);
      font-weight: 800;
      font-size: 1.7rem;
      color: var(--text-primary);
      margin-bottom: 12px;
      position: relative;
      z-index: 1;
    }

    .cta-banner p {
      font-size: 1rem;
      color: var(--text-secondary);
      margin-bottom: 24px;
      max-width: 580px;
      position: relative;
      z-index: 1;
    }

    .btn-primary-gold {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 14px 32px;
      border-radius: 50px;
      font-weight: 700;
      font-size: 1rem;
      background: linear-gradient(135deg, var(--accent-gold) 0%, #B45309 100%);
      color: #051F14;
      border: none;
      cursor: pointer;
      box-shadow: var(--shadow-gold);
      transition: all var(--transition-fast);
      font-family: var(--font-body);
      position: relative;
      z-index: 1;
    }

    .btn-primary-gold:hover {
      transform: translateY(-3px);
      box-shadow: 0 12px 30px rgba(245, 158, 11, 0.5);
    }

    /* Recent Reviews List */
    .review-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
      gap: 24px;
      margin-top: 28px;
    }

    .review-card {
      background: var(--bg-card);
      border: 1px solid var(--border-gold-20);
      border-radius: var(--radius-md);
      padding: 24px;
      transition: all var(--transition-fast);
    }

    .review-card:hover {
      border-color: var(--accent-gold);
      box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    }

    .review-card h4 {
      font-family: var(--font-heading);
      font-weight: 600;
      font-size: 1rem;
      color: var(--text-primary);
      margin-bottom: 8px;
    }

    .review-card .review-meta {
      font-size: 0.8rem;
      color: var(--text-muted);
      margin-bottom: 8px;
    }

    .review-card .review-excerpt {
      font-size: 0.9rem;
      color: var(--text-secondary);
      line-height: 1.6;
    }

    .review-card a {
      color: var(--accent-gold);
      font-weight: 600;
      font-size: 0.85rem;
      margin-top: 10px;
      display: inline-block;
    }

    .review-card a:hover {
      text-decoration: underline;
    }

    /* Footer */
    .site-footer {
      background: #030F0C;
      border-top: 1px solid var(--border-gold-20);
      padding: 56px 0 28px;
      margin-top: 0;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 36px;
    }

    .footer-col h4 {
      font-family: var(--font-heading);
      font-weight: 700;
      font-size: 1rem;
      color: var(--accent-gold);
      margin-bottom: 14px;
    }

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

    .footer-col ul li {
      font-size: 0.88rem;
      color: var(--text-secondary);
      margin-bottom: 8px;
      line-height: 1.5;
    }

    .footer-col ul li a {
      color: var(--text-secondary);
      transition: color var(--transition-fast);
    }

    .footer-col ul li a:hover {
      color: var(--accent-gold);
    }

    .footer-bottom {
      border-top: 1px solid rgba(245, 158, 11, 0.15);
      margin-top: 36px;
      padding-top: 20px;
      text-align: center;
      font-size: 0.82rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* FAB */
    .fab-support {
      position: fixed;
      left: 24px;
      bottom: 24px;
      z-index: 50;
      width: 56px;
      height: 56px;
      border-radius: 50%;
      background: linear-gradient(135deg, #083720 0%, #051F14 100%);
      border: 2px solid var(--accent-gold);
      box-shadow: var(--shadow-gold);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: all var(--transition-smooth);
      animation: floatFab 3s ease-in-out infinite;
    }

    .fab-support i {
      font-size: 1.5rem;
      color: var(--accent-gold);
    }

    .fab-support:hover {
      transform: scale(1.1);
      box-shadow: 0 10px 28px rgba(245, 158, 11, 0.5);
    }

    @keyframes floatFab {
      0%, 100% { transform: translateY(0); }
      50% { transform: translateY(-6px); }
    }

    .fab-noti {
      position: absolute;
      top: -2px;
      right: -2px;
      width: 14px;
      height: 14px;
      background: var(--accent-red);
      border-radius: 50%;
      border: 2px solid #051F14;
    }

    /* Responsive */
    @media (max-width: 1024px) {
      .nav-links { gap: 20px; }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 68px;
        left: 0;
        width: 100%;
        background: rgba(5, 31, 20, 0.98);
        backdrop-filter: blur(18px);
        flex-direction: column;
        padding: 20px 24px;
        gap: 16px;
        border-bottom: 1px solid var(--border-gold-20);
      }
      .nav-links.active { display: flex; }
      .mobile-menu-btn { display: block; }

      .header-actions .btn-login,
      .header-actions .btn-signup {
        padding: 6px 14px;
        font-size: 0.78rem;
      }

      .provider-card {
        flex-direction: column;
        align-items: flex-start;
      }

      .provider-rank {
        width: 48px;
        height: 48px;
        font-size: 1.4rem;
      }

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

      .category-hero { padding-top: 120px; }
    }

    @media (max-width: 480px) {
      .container { padding-left: 16px; padding-right: 16px; }
      .section-spacing { padding-top: 56px; padding-bottom: 56px; }

      .cta-banner {
        padding: 28px 20px;
        text-align: center;
      }

      .cta-banner h2 { font-size: 1.4rem; }

      .btn-primary-gold {
        width: 100%;
        justify-content: center;
      }

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

      .logo { font-size: 1.1rem; }
    }