/* roulang page: index */
:root {
  --primary-bg: #08090F;
  --secondary-bg: #0D111E;
  --surface-bg: #111827;
  --card-bg: #141a2e;
  --accent-primary: #0052FF;
  --accent-secondary: #00F0FF;
  --accent-glow: rgba(0,240,255,0.5);
  --text-primary: #FFFFFF;
  --text-secondary: #CBD5E1;
  --text-muted: #94A3B8;
  --border-color: rgba(0,240,255,0.15);
  --border-hover: rgba(0,240,255,0.5);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 20px rgba(0,240,255,0.2);
  --shadow-glow-strong: 0 0 35px rgba(0,240,255,0.35);
  --font-heading: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
  --font-body: 'Inter', 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
  --transition-fast: 0.15s ease;
  --transition-smooth: 0.25s ease;
  --transition-bounce: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--primary-bg);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.6;
  margin: 0;
  padding: 0;
  overflow-x: hidden;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover {
  color: var(--accent-primary);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.25;
  margin-top: 0;
  color: var(--text-primary);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ---- Header & Navigation ---- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(8,9,15,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  transition: background var(--transition-smooth);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.logo i {
  color: var(--accent-secondary);
  font-size: 1.6rem;
  filter: drop-shadow(0 0 6px var(--accent-glow));
}

.logo span {
  background: linear-gradient(135deg, var(--accent-secondary), var(--accent-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.main-nav a {
  color: var(--text-secondary);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 0.95rem;
  transition: all var(--transition-smooth);
  position: relative;
  white-space: nowrap;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--text-primary);
  background: rgba(0,240,255,0.08);
}

.main-nav a.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--accent-secondary);
  border-radius: 2px;
  box-shadow: 0 0 8px var(--accent-glow);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.btn-nav {
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
  transition: all var(--transition-smooth);
  cursor: pointer;
  border: none;
  white-space: nowrap;
}

.btn-login {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-login:hover {
  border-color: var(--accent-secondary);
  color: var(--accent-secondary);
  box-shadow: 0 0 12px rgba(0,240,255,0.15);
}

.btn-signup {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  color: #fff;
  border: none;
  box-shadow: 0 0 15px rgba(0,82,255,0.3);
}

.btn-signup:hover {
  box-shadow: 0 0 25px rgba(0,240,255,0.45);
  transform: translateY(-1px);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.6rem;
  cursor: pointer;
  padding: 0.25rem;
}

/* ---- FAB Left ---- */
.fab-left {
  position: fixed;
  left: 1.5rem;
  bottom: 6rem;
  z-index: 999;
  width: 56px;
  height: 56px;
  border-radius: 30px;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 2px solid transparent;
  background-clip: padding-box;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-bounce);
  box-shadow: 0 0 20px rgba(0,240,255,0.3);
  overflow: hidden;
}

.fab-left::before {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: 32px;
  padding: 2px;
  background: linear-gradient(135deg, var(--accent-secondary), var(--accent-primary));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
}

.fab-left i {
  font-size: 1.5rem;
  color: var(--accent-secondary);
  filter: drop-shadow(0 0 6px var(--accent-glow));
  transition: all var(--transition-fast);
}

.fab-left:hover {
  transform: scale(1.1);
  box-shadow: 0 0 35px rgba(0,240,255,0.55);
}

.fab-left:hover i {
  color: #fff;
  animation: neon-flicker 0.3s ease;
}

.fab-left:active {
  transform: scale(0.95);
}

@keyframes neon-flicker {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

/* ---- Hero Section ---- */
.hero-section {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  padding: 6rem 1.5rem 4rem;
  background: radial-gradient(ellipse at center, rgba(0,240,255,0.05) 0%, transparent 70%);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
  opacity: 0.18;
  z-index: 0;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(8,9,15,0.7) 0%, rgba(13,17,30,0.9) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-block;
  padding: 0.4rem 1.2rem;
  background: rgba(0,240,255,0.1);
  border: 1px solid var(--border-color);
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-secondary);
  margin-bottom: 1.5rem;
  letter-spacing: 0.02em;
}

.hero-content h1 {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.25rem;
  background: linear-gradient(135deg, #fff 30%, var(--accent-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 620px;
  margin: 0 auto 2.5rem;
  line-height: 1.7;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.btn-primary {
  padding: 0.85rem 2.2rem;
  background: linear-gradient(135deg, var(--accent-primary), #0077ff);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--transition-smooth);
  box-shadow: 0 0 25px rgba(0,82,255,0.4);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-primary:hover {
  box-shadow: 0 0 40px rgba(0,240,255,0.5);
  transform: translateY(-2px);
  color: #fff;
}

.btn-outline-light {
  padding: 0.85rem 2.2rem;
  background: transparent;
  color: #fff;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--transition-smooth);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-outline-light:hover {
  border-color: var(--accent-secondary);
  box-shadow: 0 0 20px rgba(0,240,255,0.2);
  color: var(--accent-secondary);
}

.hero-stats {
  display: flex;
  gap: 2.5rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent-secondary);
  text-shadow: 0 0 15px var(--accent-glow);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* ---- Countdown Bar ---- */
.countdown-bar {
  background: var(--surface-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem 2rem;
  display: inline-flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 1.5rem;
  box-shadow: var(--shadow-glow);
}

.countdown-timer {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.countdown-item {
  background: var(--card-bg);
  padding: 0.5rem 0.8rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--accent-secondary);
  min-width: 52px;
  text-align: center;
  border: 1px solid var(--border-color);
}

.countdown-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.countdown-text {
  font-weight: 600;
  color: #fff;
  font-size: 0.95rem;
}

/* ---- Sections ---- */
.section {
  padding: 5rem 1.5rem;
}

.section-dark {
  background: var(--secondary-bg);
}

.section-header {
  max-width: 700px;
  margin: 0 auto 3.5rem;
}

.section-header h2 {
  font-size: 2rem;
  margin-bottom: 0.75rem;
  color: #fff;
}

.section-header p {
  font-size: 1.05rem;
  color: var(--text-muted);
}

.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-secondary);
  margin-bottom: 0.75rem;
}

/* ---- Hot List Grid ---- */
.hotlist-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.hotlist-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.hotlist-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-glow-strong);
  transform: translateY(-4px);
}

.hotlist-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--accent-secondary), var(--accent-primary));
  border-radius: 4px 0 0 4px;
}

.hotlist-number {
  font-size: 2.5rem;
  font-weight: 900;
  color: rgba(0,240,255,0.15);
  position: absolute;
  top: 1rem;
  right: 1.5rem;
}

.hotlist-card h3 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
  color: #fff;
}

.hotlist-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  line-height: 1.6;
}

.hotlist-card .btn-small {
  padding: 0.5rem 1.25rem;
  font-size: 0.85rem;
  background: var(--accent-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  display: inline-block;
}

.hotlist-card .btn-small:hover {
  background: var(--accent-secondary);
  color: #000;
}

/* ---- Focus Topics ---- */
.topics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1.5rem;
}

.topic-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 2rem 1.5rem;
  text-align: left;
  transition: all var(--transition-smooth);
}

.topic-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-glow);
}

.topic-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: rgba(0,240,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  font-size: 1.3rem;
  color: var(--accent-secondary);
}

.topic-card h3 {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

.topic-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ---- Insights ---- */
.insights-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.insight-card {
  background: var(--surface-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  position: relative;
  transition: all var(--transition-smooth);
}

.insight-card:hover {
  border-color: var(--border-hover);
}

.insight-quote {
  font-size: 1.5rem;
  color: var(--accent-secondary);
  opacity: 0.4;
  margin-bottom: 0.75rem;
}

.insight-card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  font-style: italic;
}

.insight-author {
  margin-top: 1rem;
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--accent-secondary);
}

/* ---- Latest Updates ---- */
.updates-table {
  width: 100%;
  border-collapse: collapse;
}

.updates-table th {
  text-align: left;
  padding: 0.75rem 1rem;
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-color);
}

.updates-table td {
  padding: 1rem;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.updates-table tr:hover td {
  background: rgba(0,240,255,0.03);
}

.status-badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
}

.status-live {
  background: rgba(0,200,83,0.15);
  color: #4caf50;
}

.status-new {
  background: rgba(0,240,255,0.15);
  color: var(--accent-secondary);
}

/* ---- Info List ---- */
.info-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.info-list li {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  transition: all var(--transition-fast);
}

.info-list li:hover {
  background: rgba(0,240,255,0.03);
}

.info-list li a {
  color: var(--text-primary);
  font-weight: 500;
  font-size: 0.95rem;
  flex: 1;
}

.info-list li a:hover {
  color: var(--accent-secondary);
}

.info-list li .list-date {
  font-size: 0.8rem;
  color: var(--text-muted);
  white-space: nowrap;
}

/* ---- FAQ ---- */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  overflow: hidden;
  background: var(--surface-bg);
  transition: all var(--transition-smooth);
}

.faq-item:hover {
  border-color: var(--border-hover);
}

.faq-question {
  padding: 1.25rem 1.5rem;
  font-weight: 700;
  font-size: 1.05rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #fff;
  user-select: none;
}

.faq-question i {
  transition: transform var(--transition-smooth);
  color: var(--accent-secondary);
  font-size: 0.9rem;
}

.faq-item.open .faq-question i {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 1.5rem 1.25rem;
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  display: none;
}

.faq-item.open .faq-answer {
  display: block;
}

/* ---- Form Section ---- */
.form-section {
  background: var(--surface-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  max-width: 650px;
  margin: 0 auto;
}

.form-section h3 {
  margin-bottom: 1.5rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--text-primary);
  font-size: 0.9rem;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 0.8rem 1rem;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: #fff;
  font-size: 0.95rem;
  transition: border var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent-secondary);
  box-shadow: 0 0 10px rgba(0,240,255,0.15);
}

.btn-submit {
  width: 100%;
  padding: 0.9rem;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--transition-smooth);
  margin-top: 0.5rem;
}

.btn-submit:hover {
  box-shadow: 0 0 30px rgba(0,240,255,0.45);
}

/* ---- Footer ---- */
.site-footer {
  background: var(--primary-bg);
  border-top: 1px solid var(--border-color);
  padding: 2.5rem 1.5rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-col h4 {
  font-size: 1rem;
  margin-bottom: 1rem;
  color: #fff;
}

.footer-col a {
  display: block;
  color: var(--text-muted);
  font-size: 0.9rem;
  padding: 0.25rem 0;
  transition: color var(--transition-fast);
}

.footer-col a:hover {
  color: var(--accent-secondary);
}

.footer-bottom {
  text-align: center;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.06);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-badges {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
  margin: 1rem 0;
}

.footer-badge {
  padding: 0.4rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: 50px;
  font-size: 0.75rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.footer-badge i {
  color: var(--accent-secondary);
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  h1 { font-size: 2.2rem; }
  h2 { font-size: 1.7rem; }
  .hero-content h1 { font-size: 2.4rem; }
  .hero-stats { gap: 1.5rem; }
}

@media (max-width: 768px) {
  .site-header .container { height: 60px; }
  .main-nav { display: none; }
  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 60px;
    left: 0;
    width: 100%;
    background: rgba(8,9,15,0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem;
    gap: 0;
  }
  .main-nav.open a {
    padding: 0.75rem 1rem;
    width: 100%;
  }
  .mobile-toggle { display: block; }
  .hero-content h1 { font-size: 2rem; }
  .hero-subtitle { font-size: 1rem; }
  .hero-stats { gap: 1rem; flex-direction: column; align-items: center; }
  .countdown-bar { flex-direction: column; gap: 0.75rem; }
  .section { padding: 3rem 1rem; }
  .hotlist-grid,
  .topics-grid,
  .insights-grid { grid-template-columns: 1fr; }
  .form-section { padding: 1.5rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 520px) {
  .hero-content h1 { font-size: 1.7rem; }
  .hero-cta-group { flex-direction: column; align-items: center; }
  .btn-primary, .btn-outline-light { width: 100%; justify-content: center; }
  .footer-grid { grid-template-columns: 1fr; }
  .nav-actions { gap: 0.5rem; }
  .btn-nav { padding: 0.4rem 0.9rem; font-size: 0.8rem; }
}

/* roulang page: article */
:root {
      --primary-bg: #08090F;
      --secondary-bg: #0D111E;
      --surface-bg: #111827;
      --card-bg: #141a2e;
      --accent-primary: #0052FF;
      --accent-secondary: #00F0FF;
      --accent-glow: rgba(0,240,255,0.5);
      --text-primary: #FFFFFF;
      --text-secondary: #CBD5E1;
      --text-muted: #94A3B8;
      --border-color: rgba(0,240,255,0.15);
      --border-hover: rgba(0,240,255,0.5);
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 20px;
      --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
      --shadow-md: 0 4px 20px rgba(0,0,0,0.5);
      --shadow-glow: 0 0 20px rgba(0,240,255,0.2);
      --shadow-glow-strong: 0 0 35px rgba(0,240,255,0.35);
      --font-heading: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
      --font-body: 'Inter', 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
      --transition-fast: 0.15s ease;
      --transition-smooth: 0.25s ease;
      --transition-bounce: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    html { scroll-behavior: smooth; }
    body {
      background-color: var(--primary-bg);
      color: var(--text-primary);
      font-family: var(--font-body);
      line-height: 1.6;
      margin: 0;
      padding: 0;
      overflow-x: hidden;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: var(--accent-secondary); text-decoration: none; transition: color var(--transition-fast); }
    a:hover { color: var(--accent-primary); }
    .container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }

    /* Header */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 1000;
      background: rgba(8,9,15,0.85);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-bottom: 1px solid var(--border-color);
      transition: background var(--transition-smooth);
    }
    .site-header .container { display: flex; align-items: center; justify-content: space-between; height: 70px; }
    .logo {
      font-family: var(--font-heading);
      font-weight: 800;
      font-size: 1.35rem;
      color: var(--text-primary);
      display: flex;
      align-items: center;
      gap: 0.5rem;
      flex-shrink: 0;
      text-decoration: none;
    }
    .logo i { color: var(--accent-secondary); font-size: 1.6rem; filter: drop-shadow(0 0 6px var(--accent-glow)); }
    .logo span {
      background: linear-gradient(135deg, var(--accent-secondary), var(--accent-primary));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    .main-nav { display: flex; align-items: center; gap: 0.25rem; }
    .main-nav a {
      color: var(--text-secondary);
      padding: 0.5rem 1rem;
      border-radius: var(--radius-sm);
      font-weight: 500;
      font-size: 0.95rem;
      transition: all var(--transition-smooth);
      position: relative;
      white-space: nowrap;
      text-decoration: none;
    }
    .main-nav a:hover, .main-nav a.active { color: var(--text-primary); background: rgba(0,240,255,0.08); }
    .main-nav a.active::after {
      content: '';
      position: absolute;
      bottom: -2px;
      left: 50%;
      transform: translateX(-50%);
      width: 20px;
      height: 2px;
      background: var(--accent-secondary);
      border-radius: 2px;
      box-shadow: 0 0 8px var(--accent-glow);
    }
    .nav-actions { display: flex; align-items: center; gap: 0.75rem; flex-shrink: 0; }
    .btn-nav {
      padding: 0.5rem 1.25rem;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 0.9rem;
      transition: all var(--transition-smooth);
      cursor: pointer;
      border: none;
      white-space: nowrap;
    }
    .btn-login { background: transparent; color: var(--text-primary); border: 1px solid var(--border-color); }
    .btn-login:hover { border-color: var(--accent-secondary); color: var(--accent-secondary); box-shadow: 0 0 12px rgba(0,240,255,0.15); }
    .btn-signup {
      background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
      color: #fff;
      border: none;
      box-shadow: 0 0 15px rgba(0,82,255,0.3);
    }
    .btn-signup:hover { box-shadow: 0 0 25px rgba(0,240,255,0.45); transform: translateY(-1px); }
    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      color: var(--text-primary);
      font-size: 1.6rem;
      cursor: pointer;
      padding: 0.25rem;
    }

    /* Article Page Layout */
    .article-page { padding-top: 100px; padding-bottom: 4rem; }
    .article-header {
      margin-bottom: 2.5rem;
      border-bottom: 1px solid var(--border-color);
      padding-bottom: 1.5rem;
    }
    .article-meta {
      display: flex;
      align-items: center;
      gap: 1rem;
      flex-wrap: wrap;
      margin-bottom: 1rem;
      color: var(--text-muted);
      font-size: 0.9rem;
    }
    .article-meta .category-tag {
      background: rgba(0,240,255,0.1);
      border: 1px solid var(--border-color);
      color: var(--accent-secondary);
      padding: 0.25rem 0.8rem;
      border-radius: 50px;
      font-weight: 600;
      font-size: 0.8rem;
    }
    .article-header h1 {
      font-size: 2.4rem;
      font-weight: 800;
      line-height: 1.2;
      margin-bottom: 1rem;
      background: linear-gradient(135deg, #fff 30%, var(--accent-secondary) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    .article-featured-img {
      width: 100%;
      border-radius: var(--radius-md);
      margin-bottom: 2rem;
      box-shadow: var(--shadow-glow);
    }
    .article-body {
      max-width: 800px;
      margin: 0 auto;
      font-size: 1.05rem;
      line-height: 1.8;
      color: var(--text-secondary);
    }
    .article-body h2 {
      font-size: 1.8rem;
      font-weight: 700;
      color: var(--text-primary);
      margin-top: 2.5rem;
      margin-bottom: 1rem;
    }
    .article-body h3 {
      font-size: 1.4rem;
      font-weight: 700;
      color: var(--text-primary);
      margin-top: 2rem;
      margin-bottom: 0.75rem;
    }
    .article-body p { margin-bottom: 1.25rem; }
    .article-body ul, .article-body ol { margin-bottom: 1.5rem; padding-left: 1.5rem; }
    .article-body li { margin-bottom: 0.5rem; }
    .article-body strong { color: var(--text-primary); }
    .article-body blockquote {
      border-left: 3px solid var(--accent-secondary);
      padding: 1rem 1.5rem;
      margin: 2rem 0;
      background: rgba(0,240,255,0.05);
      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
      font-style: italic;
    }
    .article-body img {
      border-radius: var(--radius-md);
      margin: 1.5rem 0;
      box-shadow: var(--shadow-sm);
    }
    .article-not-found {
      text-align: center;
      padding: 4rem 1.5rem;
    }
    .article-not-found i { font-size: 3rem; color: var(--text-muted); margin-bottom: 1rem; }
    .article-not-found h2 { color: var(--text-primary); margin-bottom: 0.5rem; }
    .article-not-found p { color: var(--text-secondary); margin-bottom: 1.5rem; }
    .article-not-found a { color: var(--accent-secondary); font-weight: 600; }

    /* CTA Bar */
    .cta-sticky-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      background: rgba(8,9,15,0.95);
      backdrop-filter: blur(20px);
      border-top: 1px solid var(--border-color);
      padding: 0.75rem 1.5rem;
      z-index: 999;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 1rem;
      flex-wrap: wrap;
    }
    .cta-sticky-bar .btn-primary {
      padding: 0.75rem 2rem;
      background: linear-gradient(135deg, var(--accent-primary), #0077ff);
      color: #fff;
      border: none;
      border-radius: var(--radius-sm);
      font-weight: 700;
      font-size: 0.95rem;
      cursor: pointer;
      transition: all var(--transition-smooth);
      box-shadow: 0 0 20px rgba(0,82,255,0.4);
      text-decoration: none;
    }
    .cta-sticky-bar .btn-primary:hover { box-shadow: 0 0 30px rgba(0,240,255,0.5); transform: translateY(-2px); }

    /* Footer */
    .site-footer {
      background: var(--secondary-bg);
      border-top: 1px solid var(--border-color);
      padding: 3rem 0 2rem;
      margin-top: 4rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 2rem;
      margin-bottom: 2rem;
    }
    .footer-col h4 {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-primary);
      margin-bottom: 1rem;
    }
    .footer-col a {
      display: block;
      color: var(--text-secondary);
      font-size: 0.9rem;
      margin-bottom: 0.5rem;
      transition: color var(--transition-fast);
    }
    .footer-col a:hover { color: var(--accent-secondary); }
    .footer-col i { margin-right: 0.5rem; }
    .footer-badges {
      display: flex;
      flex-wrap: wrap;
      gap: 1rem;
      justify-content: center;
      margin-bottom: 1.5rem;
    }
    .footer-badge {
      background: rgba(0,240,255,0.05);
      border: 1px solid var(--border-color);
      padding: 0.4rem 1rem;
      border-radius: 50px;
      font-size: 0.8rem;
      color: var(--text-secondary);
      display: flex;
      align-items: center;
      gap: 0.4rem;
    }
    .footer-badge i { color: var(--accent-secondary); }
    .footer-bottom {
      text-align: center;
      border-top: 1px solid var(--border-color);
      padding-top: 1.5rem;
    }
    .footer-bottom p { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 0.25rem; }

    /* FAB */
    .fab-left {
      position: fixed;
      left: 1.5rem;
      bottom: 6rem;
      z-index: 50;
      width: 52px;
      height: 52px;
      background: rgba(0,0,0,0.7);
      backdrop-filter: blur(10px);
      border: 1.5px solid transparent;
      background-clip: padding-box;
      border-radius: 50px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent-secondary);
      font-size: 1.5rem;
      cursor: pointer;
      transition: all var(--transition-smooth);
      box-shadow: 0 0 15px rgba(0,240,255,0.35);
      animation: breathe 2s ease-in-out infinite;
    }
    .fab-left:hover {
      transform: scale(1.1);
      box-shadow: 0 0 28px rgba(0,240,255,0.6);
    }
    @keyframes breathe {
      0%, 100% { opacity: 0.65; box-shadow: 0 0 12px rgba(0,240,255,0.3); }
      50% { opacity: 1; box-shadow: 0 0 22px rgba(0,240,255,0.55); }
    }
    .fab-notification {
      position: absolute;
      top: 4px;
      right: 4px;
      width: 10px;
      height: 10px;
      background: #ff0040;
      border-radius: 50%;
      box-shadow: 0 0 6px #ff0040;
    }

    /* Responsive */
    @media (max-width: 1024px) {
      .hero-content h1 { font-size: 2.4rem; }
    }
    @media (max-width: 768px) {
      .mobile-toggle { display: block; }
      .main-nav {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: rgba(8,9,15,0.98);
        flex-direction: column;
        padding: 1rem;
        border-bottom: 1px solid var(--border-color);
      }
      .main-nav.open { display: flex; }
      .article-header h1 { font-size: 1.8rem; }
      .article-body { font-size: 1rem; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 520px) {
      .container { padding: 0 1rem; }
      .article-header h1 { font-size: 1.5rem; }
      .footer-grid { grid-template-columns: 1fr; }
      .cta-sticky-bar { flex-direction: column; gap: 0.5rem; text-align: center; padding: 1rem; }
      .fab-left { left: 1rem; bottom: 5rem; width: 46px; height: 46px; font-size: 1.3rem; }
    }

/* roulang page: category2 */
:root {
      --primary-bg: #08090F;
      --secondary-bg: #0D111E;
      --surface-bg: #111827;
      --card-bg: #141a2e;
      --accent-primary: #0052FF;
      --accent-secondary: #00F0FF;
      --accent-glow: rgba(0,240,255,0.5);
      --text-primary: #FFFFFF;
      --text-secondary: #CBD5E1;
      --text-muted: #94A3B8;
      --border-color: rgba(0,240,255,0.15);
      --border-hover: rgba(0,240,255,0.5);
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 20px;
      --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
      --shadow-md: 0 4px 20px rgba(0,0,0,0.5);
      --shadow-glow: 0 0 20px rgba(0,240,255,0.2);
      --shadow-glow-strong: 0 0 35px rgba(0,240,255,0.35);
      --font-heading: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
      --font-body: 'Inter', 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
      --transition-fast: 0.15s ease;
      --transition-smooth: 0.25s ease;
      --transition-bounce: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      --danger-red: #FF3B30;
      --warning-amber: #FF9500;
      --success-green: #34C759;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      background-color: var(--primary-bg);
      color: var(--text-primary);
      font-family: var(--font-body);
      line-height: 1.6;
      margin: 0;
      padding: 0;
      overflow-x: hidden;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    a {
      color: var(--accent-secondary);
      text-decoration: none;
      transition: color var(--transition-fast);
    }
    a:hover {
      color: var(--accent-primary);
    }
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 1.5rem;
    }
    /* ---- Header & Navigation ---- */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 1000;
      background: rgba(8,9,15,0.85);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-bottom: 1px solid var(--border-color);
      transition: background var(--transition-smooth);
    }
    .site-header .container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 70px;
    }
    .logo {
      font-family: var(--font-heading);
      font-weight: 800;
      font-size: 1.35rem;
      color: var(--text-primary);
      display: flex;
      align-items: center;
      gap: 0.5rem;
      flex-shrink: 0;
    }
    .logo i {
      color: var(--accent-secondary);
      font-size: 1.6rem;
      filter: drop-shadow(0 0 6px var(--accent-glow));
    }
    .logo span {
      background: linear-gradient(135deg, var(--accent-secondary), var(--accent-primary));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    .main-nav {
      display: flex;
      align-items: center;
      gap: 0.25rem;
    }
    .main-nav a {
      color: var(--text-secondary);
      padding: 0.5rem 1rem;
      border-radius: var(--radius-sm);
      font-weight: 500;
      font-size: 0.95rem;
      transition: all var(--transition-smooth);
      position: relative;
      white-space: nowrap;
    }
    .main-nav a:hover,
    .main-nav a.active {
      color: var(--text-primary);
      background: rgba(0,240,255,0.08);
    }
    .main-nav a.active::after {
      content: '';
      position: absolute;
      bottom: -2px;
      left: 50%;
      transform: translateX(-50%);
      width: 20px;
      height: 2px;
      background: var(--accent-secondary);
      border-radius: 2px;
      box-shadow: 0 0 8px var(--accent-glow);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      flex-shrink: 0;
    }
    .btn-nav {
      padding: 0.5rem 1.25rem;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 0.9rem;
      transition: all var(--transition-smooth);
      cursor: pointer;
      border: none;
      white-space: nowrap;
    }
    .btn-login {
      background: transparent;
      color: var(--text-primary);
      border: 1px solid var(--border-color);
    }
    .btn-login:hover {
      border-color: var(--accent-secondary);
      color: var(--accent-secondary);
      box-shadow: 0 0 12px rgba(0,240,255,0.15);
    }
    .btn-signup {
      background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
      color: #fff;
      border: none;
      box-shadow: 0 0 15px rgba(0,82,255,0.3);
    }
    .btn-signup:hover {
      box-shadow: 0 0 25px rgba(0,240,255,0.45);
      transform: translateY(-1px);
    }
    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      color: var(--text-primary);
      font-size: 1.6rem;
      cursor: pointer;
      padding: 0.25rem;
    }
    /* ---- Hero Section ---- */
    .hero-inner {
      position: relative;
      min-height: 50vh;
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
      overflow: hidden;
      padding: 6rem 1.5rem 3rem;
      background: radial-gradient(ellipse at center, rgba(255,59,48,0.06) 0%, transparent 70%);
    }
    .hero-bg-inner {
      position: absolute;
      inset: 0;
      background: url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
      opacity: 0.1;
      z-index: 0;
    }
    .hero-overlay-inner {
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(8,9,15,0.7) 0%, rgba(13,17,30,0.95) 100%);
      z-index: 1;
    }
    .hero-content-inner {
      position: relative;
      z-index: 2;
      max-width: 820px;
      margin: 0 auto;
    }
    .hero-badge {
      display: inline-block;
      padding: 0.4rem 1.5rem;
      background: rgba(255,59,48,0.12);
      border: 1px solid rgba(255,59,48,0.3);
      border-radius: 50px;
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--danger-red);
      margin-bottom: 1.5rem;
      letter-spacing: 0.03em;
    }
    .hero-content-inner h1 {
      font-size: 2.8rem;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 1.25rem;
      background: linear-gradient(135deg, #fff 30%, var(--danger-red) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    .hero-subtitle-inner {
      font-size: 1.15rem;
      color: var(--text-secondary);
      max-width: 640px;
      margin: 0 auto 2rem;
      line-height: 1.7;
    }
    .hero-cta-group {
      display: flex;
      flex-wrap: wrap;
      gap: 1rem;
      justify-content: center;
      margin-bottom: 1.5rem;
    }
    .btn-primary {
      padding: 0.85rem 2.2rem;
      background: linear-gradient(135deg, var(--danger-red), #cc0000);
      color: #fff;
      border: none;
      border-radius: var(--radius-sm);
      font-weight: 700;
      font-size: 1rem;
      cursor: pointer;
      transition: all var(--transition-smooth);
      box-shadow: 0 0 25px rgba(255,59,48,0.4);
      text-decoration: none;
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
    }
    .btn-primary:hover {
      box-shadow: 0 0 35px rgba(255,59,48,0.6);
      transform: translateY(-2px);
      color: #fff;
    }
    .btn-outline {
      padding: 0.85rem 2.2rem;
      background: transparent;
      color: #fff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 1rem;
      cursor: pointer;
      transition: all var(--transition-smooth);
      text-decoration: none;
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
    }
    .btn-outline:hover {
      border-color: var(--accent-secondary);
      color: var(--accent-secondary);
      box-shadow: 0 0 15px rgba(0,240,255,0.15);
    }
    /* ---- Scam Alert Section ---- */
    .scam-list-section {
      padding: 4rem 0;
      background: var(--secondary-bg);
    }
    .section-label {
      font-size: 0.8rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.1em;
      color: var(--danger-red);
      margin-bottom: 0.75rem;
    }
    .section-title {
      font-size: 2rem;
      font-weight: 700;
      margin-bottom: 1rem;
      color: var(--text-primary);
    }
    .section-desc {
      color: var(--text-muted);
      font-size: 1rem;
      line-height: 1.7;
      max-width: 700px;
      margin-bottom: 2.5rem;
    }
    .scam-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
      gap: 1.5rem;
    }
    .scam-card {
      background: var(--surface-bg);
      border: 1px solid rgba(255,59,48,0.15);
      border-radius: var(--radius-md);
      padding: 1.8rem 1.5rem;
      transition: all var(--transition-smooth);
      text-align: left;
    }
    .scam-card:hover {
      border-color: rgba(255,59,48,0.4);
      box-shadow: 0 0 20px rgba(255,59,48,0.12);
      transform: translateY(-3px);
    }
    .scam-icon {
      width: 48px;
      height: 48px;
      background: rgba(255,59,48,0.12);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 1.2rem;
      font-size: 1.5rem;
      color: var(--danger-red);
    }
    .scam-card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 0.6rem;
    }
    .scam-card p {
      color: var(--text-secondary);
      font-size: 0.9rem;
      line-height: 1.6;
      margin: 0;
    }
    /* ---- Steps Section ---- */
    .steps-section {
      padding: 4rem 0;
    }
    .steps-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 1.5rem;
      margin-top: 2rem;
    }
    .step-item {
      background: var(--surface-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 2rem 1.5rem;
      text-align: left;
      position: relative;
      transition: var(--transition-smooth);
    }
    .step-item:hover {
      border-color: var(--accent-secondary);
      box-shadow: var(--shadow-glow);
    }
    .step-number {
      font-size: 2.5rem;
      font-weight: 800;
      background: linear-gradient(135deg, var(--accent-secondary), var(--accent-primary));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      opacity: 0.3;
      position: absolute;
      top: 10px;
      right: 20px;
    }
    .step-item h3 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 0.5rem;
    }
    .step-item p {
      color: var(--text-secondary);
      font-size: 0.9rem;
      line-height: 1.6;
      margin: 0;
    }
    /* ---- Red Flags Table ---- */
    .flags-section {
      padding: 4rem 0;
      background: var(--secondary-bg);
    }
    .flag-table-wrap {
      overflow-x: auto;
      margin-top: 2rem;
    }
    .flag-table {
      width: 100%;
      border-collapse: collapse;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      background: var(--surface-bg);
    }
    .flag-table th, .flag-table td {
      padding: 1rem 1.2rem;
      text-align: left;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.95rem;
    }
    .flag-table th {
      background: rgba(255,59,48,0.08);
      font-weight: 700;
      color: var(--danger-red);
      text-transform: uppercase;
      font-size: 0.8rem;
      letter-spacing: 0.04em;
    }
    .flag-table td {
      color: var(--text-secondary);
    }
    .flag-table tr:last-child td {
      border-bottom: none;
    }
    .flag-table td:first-child {
      font-weight: 600;
      color: #fff;
    }
    /* ---- CTA Bottom ---- */
    .cta-bottom {
      padding: 3rem 0 5rem;
      text-align: center;
    }
    .cta-card {
      background: linear-gradient(135deg, rgba(255,59,48,0.08), rgba(0,240,255,0.05));
      border: 1px solid rgba(255,59,48,0.2);
      border-radius: var(--radius-lg);
      padding: 3rem 2rem;
      max-width: 700px;
      margin: 0 auto;
    }
    .cta-card h2 {
      font-size: 1.8rem;
      font-weight: 700;
      margin-bottom: 1rem;
    }
    .cta-card p {
      color: var(--text-secondary);
      margin-bottom: 2rem;
    }
    /* ---- Footer ---- */
    .site-footer {
      background: var(--secondary-bg);
      border-top: 1px solid var(--border-color);
      padding: 3rem 0 1.5rem;
      margin-top: 2rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 2rem;
      margin-bottom: 2rem;
    }
    .footer-col h4 {
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 1rem;
      color: #fff;
    }
    .footer-col a {
      display: block;
      color: var(--text-muted);
      padding: 0.3rem 0;
      font-size: 0.9rem;
      transition: color var(--transition-fast);
    }
    .footer-col a:hover {
      color: var(--accent-secondary);
    }
    .footer-badges {
      display: flex;
      flex-wrap: wrap;
      gap: 1rem;
      justify-content: center;
      margin-bottom: 1.5rem;
    }
    .footer-badge {
      padding: 0.5rem 1rem;
      border: 1px solid var(--border-color);
      border-radius: 50px;
      font-size: 0.8rem;
      font-weight: 600;
      color: var(--text-muted);
      display: flex;
      align-items: center;
      gap: 0.4rem;
      background: var(--surface-bg);
    }
    .footer-badge i {
      color: var(--accent-secondary);
      font-size: 0.85rem;
    }
    .footer-bottom {
      text-align: center;
      border-top: 1px solid var(--border-color);
      padding-top: 1.5rem;
    }
    .footer-bottom p {
      color: var(--text-muted);
      font-size: 0.85rem;
      margin: 0.3rem 0;
    }
    /* ---- Responsive ---- */
    @media (max-width: 1024px) {
      .hero-content-inner h1 {
        font-size: 2.2rem;
      }
      .scam-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
      }
    }
    @media (max-width: 768px) {
      .main-nav {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: rgba(8,9,15,0.98);
        flex-direction: column;
        padding: 1rem;
        border-bottom: 1px solid var(--border-color);
      }
      .main-nav.open {
        display: flex;
      }
      .mobile-toggle {
        display: block;
      }
      .hero-content-inner h1 {
        font-size: 1.9rem;
      }
      .hero-inner {
        min-height: 40vh;
      }
      .scam-grid {
        grid-template-columns: 1fr;
      }
      .steps-grid {
        grid-template-columns: 1fr;
      }
    }
    @media (max-width: 520px) {
      .hero-content-inner h1 {
        font-size: 1.6rem;
      }
      .hero-subtitle-inner {
        font-size: 1rem;
      }
      .btn-primary, .btn-outline {
        width: 100%;
        justify-content: center;
      }
      .section-title {
        font-size: 1.5rem;
      }
    }

/* roulang page: category1 */
:root {
      --primary-bg: #08090F;
      --secondary-bg: #0D111E;
      --surface-bg: #111827;
      --card-bg: #141a2e;
      --accent-primary: #0052FF;
      --accent-secondary: #00F0FF;
      --accent-glow: rgba(0,240,255,0.5);
      --text-primary: #FFFFFF;
      --text-secondary: #CBD5E1;
      --text-muted: #94A3B8;
      --border-color: rgba(0,240,255,0.15);
      --border-hover: rgba(0,240,255,0.5);
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 20px;
      --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
      --shadow-md: 0 4px 20px rgba(0,0,0,0.5);
      --shadow-glow: 0 0 20px rgba(0,240,255,0.2);
      --shadow-glow-strong: 0 0 35px rgba(0,240,255,0.35);
      --font-heading: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
      --font-body: 'Inter', 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
      --transition-fast: 0.15s ease;
      --transition-smooth: 0.25s ease;
      --transition-bounce: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    
    html {
      scroll-behavior: smooth;
    }
    
    body {
      background-color: var(--primary-bg);
      color: var(--text-primary);
      font-family: var(--font-body);
      line-height: 1.6;
      margin: 0;
      padding: 0;
      overflow-x: hidden;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }
    
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    
    a {
      color: var(--accent-secondary);
      text-decoration: none;
      transition: color var(--transition-fast);
    }
    
    a:hover {
      color: var(--accent-primary);
    }
    
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 1.5rem;
    }
    
    /* Header & Navigation */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 1000;
      background: rgba(8,9,15,0.85);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-bottom: 1px solid var(--border-color);
      transition: background var(--transition-smooth);
    }
    
    .site-header .container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 70px;
    }
    
    .logo {
      font-family: var(--font-heading);
      font-weight: 800;
      font-size: 1.35rem;
      color: var(--text-primary);
      display: flex;
      align-items: center;
      gap: 0.5rem;
      flex-shrink: 0;
    }
    
    .logo i {
      color: var(--accent-secondary);
      font-size: 1.6rem;
      filter: drop-shadow(0 0 6px var(--accent-glow));
    }
    
    .logo span {
      background: linear-gradient(135deg, var(--accent-secondary), var(--accent-primary));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    
    .main-nav {
      display: flex;
      align-items: center;
      gap: 0.25rem;
    }
    
    .main-nav a {
      color: var(--text-secondary);
      padding: 0.5rem 1rem;
      border-radius: var(--radius-sm);
      font-weight: 500;
      font-size: 0.95rem;
      transition: all var(--transition-smooth);
      position: relative;
      white-space: nowrap;
    }
    
    .main-nav a:hover,
    .main-nav a.active {
      color: var(--text-primary);
      background: rgba(0,240,255,0.08);
    }
    
    .main-nav a.active::after {
      content: '';
      position: absolute;
      bottom: -2px;
      left: 50%;
      transform: translateX(-50%);
      width: 20px;
      height: 2px;
      background: var(--accent-secondary);
      border-radius: 2px;
      box-shadow: 0 0 8px var(--accent-glow);
    }
    
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      flex-shrink: 0;
    }
    
    .btn-nav {
      padding: 0.5rem 1.25rem;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 0.9rem;
      transition: all var(--transition-smooth);
      cursor: pointer;
      border: none;
      white-space: nowrap;
    }
    
    .btn-login {
      background: transparent;
      color: var(--text-primary);
      border: 1px solid var(--border-color);
    }
    
    .btn-login:hover {
      border-color: var(--accent-secondary);
      color: var(--accent-secondary);
      box-shadow: 0 0 12px rgba(0,240,255,0.15);
    }
    
    .btn-signup {
      background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
      color: #fff;
      border: none;
      box-shadow: 0 0 15px rgba(0,82,255,0.3);
    }
    
    .btn-signup:hover {
      box-shadow: 0 0 25px rgba(0,240,255,0.45);
      transform: translateY(-1px);
    }
    
    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      color: var(--text-primary);
      font-size: 1.6rem;
      cursor: pointer;
      padding: 0.25rem;
    }
    
    /* Hero - No large image, icon matrix + status bar */
    .hero-section {
      position: relative;
      min-height: 70vh;
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
      overflow: hidden;
      padding: 6rem 1.5rem 4rem;
      background: radial-gradient(ellipse at center, rgba(0,240,255,0.05) 0%, transparent 70%);
    }
    
    .hero-bg {
      position: absolute;
      inset: 0;
      background: url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
      opacity: 0.15;
      z-index: 0;
    }
    
    .hero-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(8,9,15,0.7) 0%, rgba(13,17,30,0.9) 100%);
      z-index: 1;
    }
    
    .hero-content {
      position: relative;
      z-index: 2;
      max-width: 850px;
      margin: 0 auto;
    }
    
    .hero-icon-matrix {
      display: flex;
      justify-content: center;
      gap: 1.5rem;
      margin-bottom: 2rem;
      flex-wrap: wrap;
    }
    
    .hero-icon-item {
      width: 64px;
      height: 64px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: rgba(0,240,255,0.08);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      font-size: 1.8rem;
      color: var(--accent-secondary);
      transition: all var(--transition-smooth);
    }
    
    .hero-icon-item:hover {
      border-color: var(--border-hover);
      box-shadow: 0 0 20px var(--accent-glow);
      transform: translateY(-4px);
    }
    
    .hero-status-bar {
      display: inline-flex;
      align-items: center;
      gap: 0.6rem;
      padding: 0.5rem 1.5rem;
      background: rgba(0,240,255,0.08);
      border: 1px solid var(--border-color);
      border-radius: 50px;
      margin-bottom: 2rem;
      font-size: 0.9rem;
      color: var(--accent-secondary);
    }
    
    .hero-status-dot {
      width: 10px;
      height: 10px;
      background: #00ff88;
      border-radius: 50%;
      animation: pulse-dot 2s infinite;
    }
    
    @keyframes pulse-dot {
      0%, 100% { box-shadow: 0 0 5px #00ff88; }
      50% { box-shadow: 0 0 15px #00ff88; }
    }
    
    .hero-content h1 {
      font-size: 2.8rem;
      font-weight: 800;
      line-height: 1.2;
      margin-bottom: 1.25rem;
      background: linear-gradient(135deg, #fff 30%, var(--accent-secondary) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    
    .hero-subtitle {
      font-size: 1.15rem;
      color: var(--text-secondary);
      max-width: 620px;
      margin: 0 auto 2.5rem;
      line-height: 1.7;
    }
    
    .hero-cta-group {
      display: flex;
      flex-wrap: wrap;
      gap: 1rem;
      justify-content: center;
      margin-bottom: 1.5rem;
    }
    
    .btn-primary {
      padding: 0.85rem 2.2rem;
      background: linear-gradient(135deg, var(--accent-primary), #0077ff);
      color: #fff;
      border: none;
      border-radius: var(--radius-sm);
      font-weight: 700;
      font-size: 1rem;
      cursor: pointer;
      transition: all var(--transition-smooth);
      box-shadow: 0 0 25px rgba(0,82,255,0.4);
      text-decoration: none;
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
    }
    
    .btn-primary:hover {
      box-shadow: 0 0 35px rgba(0,240,255,0.5);
      transform: translateY(-2px);
      color: #fff;
    }
    
    .btn-outline {
      padding: 0.85rem 2.2rem;
      background: transparent;
      color: var(--text-primary);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-weight: 700;
      font-size: 1rem;
      cursor: pointer;
      transition: all var(--transition-smooth);
      text-decoration: none;
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
    }
    
    .btn-outline:hover {
      border-color: var(--accent-secondary);
      box-shadow: 0 0 20px rgba(0,240,255,0.2);
      color: var(--accent-secondary);
    }
    
    hr.divider {
      border: none;
      border-top: 1px solid var(--border-color);
      margin: 3rem 0;
    }
    
    /* Sections */
    .section {
      padding: 5rem 1.5rem;
    }
    
    .section-header {
      margin-bottom: 3rem;
    }
    
    .section-label {
      display: inline-block;
      padding: 0.3rem 1rem;
      background: rgba(0,240,255,0.08);
      border: 1px solid var(--border-color);
      border-radius: 50px;
      font-size: 0.8rem;
      font-weight: 600;
      color: var(--accent-secondary);
      text-transform: uppercase;
      letter-spacing: 0.05em;
      margin-bottom: 1rem;
    }
    
    .section-title {
      font-size: 2rem;
      font-weight: 700;
      color: var(--text-primary);
      margin-bottom: 1rem;
      line-height: 1.3;
    }
    
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-secondary);
      max-width: 700px;
      line-height: 1.7;
    }
    
    /* Card grid */
    .card-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 1.5rem;
    }
    
    .card {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 2rem;
      transition: all var(--transition-smooth);
      position: relative;
      overflow: hidden;
    }
    
    .card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 2px;
      background: linear-gradient(90deg, transparent, var(--accent-secondary), transparent);
      opacity: 0;
      transition: opacity var(--transition-smooth);
    }
    
    .card:hover {
      border-color: var(--border-hover);
      box-shadow: var(--shadow-glow);
      transform: translateY(-4px);
    }
    
    .card:hover::before {
      opacity: 1;
    }
    
    .card-icon {
      width: 56px;
      height: 56px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: rgba(0,240,255,0.08);
      border-radius: var(--radius-sm);
      margin-bottom: 1.25rem;
      font-size: 1.6rem;
      color: var(--accent-secondary);
    }
    
    .card-title {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 0.75rem;
      color: var(--text-primary);
    }
    
    .card-text {
      font-size: 0.95rem;
      color: var(--text-secondary);
      line-height: 1.6;
    }
    
    /* Steps */
    .steps-list {
      list-style: none;
      padding: 0;
      margin: 0;
      counter-reset: step-counter;
    }
    
    .steps-list li {
      counter-increment: step-counter;
      display: flex;
      gap: 1.5rem;
      padding: 1.5rem 0;
      border-bottom: 1px solid var(--border-color);
      align-items: flex-start;
    }
    
    .steps-list li:last-child {
      border-bottom: none;
    }
    
    .step-number {
      flex-shrink: 0;
      width: 48px;
      height: 48px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
      border-radius: 50%;
      font-weight: 800;
      font-size: 1.2rem;
      color: #fff;
      box-shadow: 0 0 15px rgba(0,240,255,0.3);
    }
    
    .step-content h4 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 0.4rem;
      color: var(--text-primary);
    }
    
    .step-content p {
      font-size: 0.95rem;
      color: var(--text-secondary);
      margin: 0;
    }
    
    /* Image block */
    .image-block {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
    }
    
    .image-block img {
      width: 100%;
      height: auto;
    }
    
    /* FAQ */
    .faq-list {
      max-width: 800px;
    }
    
    .faq-item {
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 1rem;
      overflow: hidden;
      background: var(--card-bg);
    }
    
    .faq-question {
      width: 100%;
      padding: 1.25rem 1.5rem;
      background: none;
      border: none;
      color: var(--text-primary);
      font-weight: 600;
      font-size: 1rem;
      text-align: left;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      transition: all var(--transition-smooth);
    }
    
    .faq-question:hover {
      background: rgba(0,240,255,0.03);
    }
    
    .faq-answer {
      padding: 0 1.5rem 1.25rem;
      color: var(--text-secondary);
      font-size: 0.95rem;
      line-height: 1.7;
      display: none;
    }
    
    .faq-item.open .faq-answer {
      display: block;
    }
    
    /* CTA Banner */
    .cta-banner {
      background: linear-gradient(135deg, rgba(0,82,255,0.15), rgba(0,240,255,0.08));
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 3rem 2rem;
      text-align: center;
    }
    
    .cta-banner h3 {
      font-size: 1.6rem;
      font-weight: 700;
      margin-bottom: 1rem;
    }
    
    /* Footer */
    .site-footer {
      background: var(--secondary-bg);
      border-top: 1px solid var(--border-color);
      padding: 3rem 1.5rem 1.5rem;
      margin-top: 2rem;
    }
    
    .footer-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 2rem;
      margin-bottom: 2rem;
    }
    
    .footer-col h4 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-primary);
      margin-bottom: 1rem;
    }
    
    .footer-col a {
      display: block;
      color: var(--text-muted);
      font-size: 0.9rem;
      padding: 0.3rem 0;
      transition: color var(--transition-fast);
    }
    
    .footer-col a:hover {
      color: var(--accent-secondary);
    }
    
    .footer-badges {
      display: flex;
      flex-wrap: wrap;
      gap: 1rem;
      justify-content: center;
      margin-bottom: 1.5rem;
    }
    
    .footer-badge {
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
      padding: 0.4rem 1rem;
      background: rgba(0,240,255,0.05);
      border: 1px solid var(--border-color);
      border-radius: 50px;
      font-size: 0.8rem;
      color: var(--text-muted);
    }
    
    .footer-badge i {
      color: var(--accent-secondary);
    }
    
    .footer-bottom {
      text-align: center;
      color: var(--text-muted);
      font-size: 0.85rem;
      padding-top: 1.5rem;
      border-top: 1px solid var(--border-color);
    }
    
    /* FAB */
    .fab-left {
      position: fixed;
      left: 1.5rem;
      bottom: 6rem;
      z-index: 50;
      width: 54px;
      height: 54px;
      border-radius: 50px;
      background: rgba(8,9,15,0.8);
      backdrop-filter: blur(12px);
      border: 2px solid transparent;
      border-image: linear-gradient(135deg, var(--accent-secondary), var(--accent-primary)) 1;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent-secondary);
      font-size: 1.5rem;
      cursor: pointer;
      transition: all var(--transition-smooth);
      box-shadow: 0 0 20px var(--accent-glow);
      overflow: hidden;
    }
    
    .fab-left:hover {
      box-shadow: 0 0 35px var(--accent-glow);
      transform: scale(1.08);
      color: #fff;
    }
    
    /* Responsive */
    @media (max-width: 1024px) {
      .hero-content h1 {
        font-size: 2.2rem;
      }
      
      .section {
        padding: 3.5rem 1.5rem;
      }
      
      .main-nav {
        gap: 0;
      }
      
      .main-nav a {
        padding: 0.5rem 0.7rem;
        font-size: 0.85rem;
      }
    }
    
    @media (max-width: 768px) {
      .site-header .container {
        height: 60px;
      }
      
      .main-nav {
        display: none;
        position: absolute;
        top: 60px;
        left: 0;
        width: 100%;
        background: rgba(8,9,15,0.95);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 1rem;
        border-bottom: 1px solid var(--border-color);
      }
      
      .main-nav.open {
        display: flex;
      }
      
      .mobile-toggle {
        display: block;
      }
      
      .hero-content h1 {
        font-size: 1.8rem;
      }
      
      .hero-subtitle {
        font-size: 1rem;
      }
      
      .hero-icon-matrix {
        gap: 1rem;
      }
      
      .hero-icon-item {
        width: 48px;
        height: 48px;
        font-size: 1.4rem;
      }
      
      .section-title {
        font-size: 1.5rem;
      }
      
      .card-grid {
        grid-template-columns: 1fr;
      }
      
      .steps-list li {
        flex-direction: column;
        gap: 0.75rem;
      }
      
      .cta-banner {
        padding: 2rem 1.25rem;
      }
    }
    
    @media (max-width: 520px) {
      .container {
        padding: 0 1rem;
      }
      
      .hero-section {
        min-height: auto;
        padding: 5rem 1rem 2.5rem;
      }
      
      .hero-cta-group {
        flex-direction: column;
        align-items: center;
      }
      
      .btn-primary,
      .btn-outline {
        width: 100%;
        justify-content: center;
      }
      
      .nav-actions {
        gap: 0.5rem;
      }
      
      .btn-nav {
        padding: 0.4rem 1rem;
        font-size: 0.8rem;
      }
    }

/* roulang page: category3 */
:root {
            --primary-bg: #08090F;
            --secondary-bg: #0D111E;
            --surface-bg: #111827;
            --card-bg: #141a2e;
            --accent-primary: #0052FF;
            --accent-secondary: #00F0FF;
            --accent-glow: rgba(0,240,255,0.5);
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #94A3B8;
            --border-color: rgba(0,240,255,0.15);
            --border-hover: rgba(0,240,255,0.5);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.5);
            --shadow-glow: 0 0 20px rgba(0,240,255,0.2);
            --shadow-glow-strong: 0 0 35px rgba(0,240,255,0.35);
            --font-heading: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --font-body: 'Inter', 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --transition-fast: 0.15s ease;
            --transition-smooth: 0.25s ease;
            --transition-bounce: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            background-color: var(--primary-bg);
            color: var(--text-primary);
            font-family: var(--font-body);
            line-height: 1.6;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

        a:hover {
            color: var(--accent-primary);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(8,9,15,0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            transition: background var(--transition-smooth);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }

        .logo {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-shrink: 0;
        }

        .logo i {
            color: var(--accent-secondary);
            font-size: 1.6rem;
            filter: drop-shadow(0 0 6px var(--accent-glow));
        }

        .logo span {
            background: linear-gradient(135deg, var(--accent-secondary), var(--accent-primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }

        .main-nav a {
            color: var(--text-secondary);
            padding: 0.5rem 1rem;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            transition: all var(--transition-smooth);
            position: relative;
            white-space: nowrap;
        }

        .main-nav a:hover,
        .main-nav a.active {
            color: var(--text-primary);
            background: rgba(0,240,255,0.08);
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent-secondary);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--accent-glow);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            flex-shrink: 0;
        }

        .btn-nav {
            padding: 0.5rem 1.25rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition-smooth);
            cursor: pointer;
            border: none;
            white-space: nowrap;
        }

        .btn-login {
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--border-color);
        }

        .btn-login:hover {
            border-color: var(--accent-secondary);
            color: var(--accent-secondary);
            box-shadow: 0 0 12px rgba(0,240,255,0.15);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            color: #fff;
            border: none;
            box-shadow: 0 0 15px rgba(0,82,255,0.3);
        }

        .btn-signup:hover {
            box-shadow: 0 0 25px rgba(0,240,255,0.45);
            transform: translateY(-1px);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 0.25rem;
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: rgba(8,9,15,0.98);
                flex-direction: column;
                padding: 1rem;
                border-bottom: 1px solid var(--border-color);
                gap: 0.5rem;
            }

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

            .main-nav a {
                padding: 0.75rem 1rem;
                font-size: 1rem;
            }

            .mobile-toggle {
                display: block;
            }

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

        .page-banner {
            position: relative;
            min-height: 50vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            overflow: hidden;
            padding: 6rem 1.5rem 3rem;
            background: radial-gradient(ellipse at center, rgba(0,240,255,0.05) 0%, transparent 70%);
        }

        .page-banner-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.jpg') center/cover no-repeat;
            opacity: 0.15;
            z-index: 0;
        }

        .page-banner-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(8,9,15,0.8) 0%, rgba(13,17,30,0.95) 100%);
            z-index: 1;
        }

        .page-banner-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            margin: 0 auto;
        }

        .page-banner-content h1 {
            font-size: 2.5rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 1rem;
            background: linear-gradient(135deg, #fff 30%, var(--accent-secondary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .page-banner-content .banner-desc {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }

        .content-section {
            padding: 4rem 0;
            position: relative;
            z-index: 1;
        }

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

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 1.5rem;
            color: var(--text-primary);
            position: relative;
            display: inline-block;
        }

        .section-title::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 0;
            width: 50px;
            height: 3px;
            background: var(--accent-secondary);
            border-radius: 2px;
            box-shadow: 0 0 10px var(--accent-glow);
        }

        .section-text {
            font-size: 1.1rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 2rem;
        }

        .warning-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 2rem;
            margin-bottom: 2rem;
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .warning-card:hover {
            border-color: #ff4444;
            box-shadow: 0 0 25px rgba(255,68,68,0.15);
            transform: translateY(-2px);
        }

        .warning-card .warning-icon {
            font-size: 2.5rem;
            color: #ff4444;
            margin-bottom: 1rem;
        }

        .warning-card h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            color: var(--text-primary);
        }

        .warning-card p {
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0.5rem;
        }

        .warning-tag {
            display: inline-block;
            padding: 0.3rem 0.8rem;
            background: rgba(255,68,68,0.1);
            border: 1px solid rgba(255,68,68,0.3);
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            color: #ff6666;
            margin-bottom: 0.75rem;
        }

        .safe-list {
            list-style: none;
            padding: 0;
            margin: 0 0 2rem 0;
        }

        .safe-list li {
            padding: 0.75rem 0 0.75rem 2.5rem;
            position: relative;
            color: var(--text-secondary);
            font-size: 1.05rem;
            line-height: 1.7;
            border-bottom: 1px solid var(--border-color);
        }

        .safe-list li::before {
            content: '\f00c';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 0.75rem;
            color: #00cc66;
            font-size: 1.1rem;
        }

        .danger-list {
            list-style: none;
            padding: 0;
            margin: 0 0 2rem 0;
        }

        .danger-list li {
            padding: 0.75rem 0 0.75rem 2.5rem;
            position: relative;
            color: var(--text-secondary);
            font-size: 1.05rem;
            line-height: 1.7;
            border-bottom: 1px solid var(--border-color);
        }

        .danger-list li::before {
            content: '\f06a';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 0.75rem;
            color: #ff4444;
            font-size: 1.1rem;
        }

        .cta-box {
            background: linear-gradient(135deg, rgba(0,82,255,0.1), rgba(0,240,255,0.05));
            border: 2px solid var(--border-hover);
            border-radius: var(--radius-lg);
            padding: 3rem 2rem;
            text-align: center;
            margin: 3rem 0;
            box-shadow: var(--shadow-glow);
        }

        .cta-box h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--text-primary);
        }

        .cta-box p {
            color: var(--text-secondary);
            font-size: 1.1rem;
            margin-bottom: 2rem;
        }

        .btn-cta-lg {
            padding: 1rem 2.5rem;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1.1rem;
            cursor: pointer;
            transition: all var(--transition-smooth);
            box-shadow: 0 0 30px rgba(0,82,255,0.5);
            text-decoration: none;
            display: inline-block;
        }

        .btn-cta-lg:hover {
            box-shadow: 0 0 40px rgba(0,240,255,0.6);
            transform: translateY(-2px);
            color: #fff;
        }

        .faq-block {
            margin: 2rem 0;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: 1rem;
            overflow: hidden;
            transition: all var(--transition-smooth);
        }

        .faq-item:hover {
            border-color: var(--border-hover);
        }

        .faq-question {
            padding: 1.5rem;
            cursor: pointer;
            font-weight: 600;
            font-size: 1.1rem;
            color: var(--text-primary);
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }

        .faq-question i {
            transition: transform var(--transition-smooth);
            color: var(--accent-secondary);
        }

        .faq-answer {
            padding: 0 1.5rem 1.5rem;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }

        .faq-item.active .faq-answer {
            display: block;
        }

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

        .site-footer {
            background: var(--secondary-bg);
            border-top: 1px solid var(--border-color);
            padding: 3rem 0 2rem;
            margin-top: 4rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }

        .footer-col h4 {
            color: var(--text-primary);
            font-weight: 700;
            margin-bottom: 1rem;
            font-size: 1.1rem;
        }

        .footer-col a {
            display: block;
            color: var(--text-muted);
            padding: 0.35rem 0;
            font-size: 0.95rem;
            transition: color var(--transition-fast);
        }

        .footer-col a:hover {
            color: var(--accent-secondary);
        }

        .footer-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            justify-content: center;
            margin-bottom: 1.5rem;
        }

        .footer-badge {
            padding: 0.4rem 1rem;
            background: rgba(0,240,255,0.05);
            border: 1px solid var(--border-color);
            border-radius: 50px;
            font-size: 0.85rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }

        .footer-badge i {
            color: var(--accent-secondary);
        }

        .footer-bottom {
            text-align: center;
            color: var(--text-muted);
            font-size: 0.9rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border-color);
        }

        @media (max-width: 768px) {
            .page-banner-content h1 {
                font-size: 1.8rem;
            }

            .section-title {
                font-size: 1.5rem;
            }

            .warning-card {
                padding: 1.5rem;
            }

            .cta-box {
                padding: 2rem 1.5rem;
            }
        }

/* roulang page: category4 */
:root {
            --primary-bg: #08090F;
            --secondary-bg: #0D111E;
            --surface-bg: #111827;
            --card-bg: #141a2e;
            --accent-primary: #0052FF;
            --accent-secondary: #00F0FF;
            --accent-glow: rgba(0,240,255,0.5);
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #94A3B8;
            --border-color: rgba(0,240,255,0.15);
            --border-hover: rgba(0,240,255,0.5);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.5);
            --shadow-glow: 0 0 20px rgba(0,240,255,0.2);
            --shadow-glow-strong: 0 0 35px rgba(0,240,255,0.35);
            --font-heading: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --font-body: 'Inter', 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --transition-fast: 0.15s ease;
            --transition-smooth: 0.25s ease;
            --transition-bounce: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: var(--primary-bg);
            color: var(--text-primary);
            font-family: var(--font-body);
            line-height: 1.6;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--accent-secondary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--accent-primary);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-heading);
            color: var(--text-primary);
            margin-top: 0;
        }
        h1 {
            font-size: 2.5rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 1rem;
        }
        h2 {
            font-size: 2rem;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 1.5rem;
        }
        h3 {
            font-size: 1.5rem;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 1rem;
        }
        p {
            color: var(--text-secondary);
            margin-bottom: 1rem;
        }
        ul, ol {
            color: var(--text-secondary);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.85rem 2rem;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: all var(--transition-smooth);
            border: none;
            text-decoration: none;
            white-space: nowrap;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--accent-primary), #0077ff);
            color: #fff;
            box-shadow: 0 0 25px rgba(0,82,255,0.4);
        }
        .btn-primary:hover {
            box-shadow: 0 0 35px rgba(0,240,255,0.5);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            color: var(--accent-secondary);
            border: 1px solid var(--accent-secondary);
        }
        .btn-outline:hover {
            background: rgba(0,240,255,0.1);
            box-shadow: 0 0 15px rgba(0,240,255,0.3);
            color: var(--accent-secondary);
        }
        .btn-lg {
            padding: 1rem 2.5rem;
            font-size: 1.1rem;
        }
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(8,9,15,0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            transition: background var(--transition-smooth);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }
        .logo {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-shrink: 0;
            text-decoration: none;
        }
        .logo i {
            color: var(--accent-secondary);
            font-size: 1.6rem;
            filter: drop-shadow(0 0 6px var(--accent-glow));
        }
        .logo span {
            background: linear-gradient(135deg, var(--accent-secondary), var(--accent-primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }
        .main-nav a {
            color: var(--text-secondary);
            padding: 0.5rem 1rem;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            transition: all var(--transition-smooth);
            position: relative;
            white-space: nowrap;
            text-decoration: none;
        }
        .main-nav a:hover,
        .main-nav a.active {
            color: var(--text-primary);
            background: rgba(0,240,255,0.08);
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent-secondary);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--accent-glow);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            flex-shrink: 0;
        }
        .btn-nav {
            padding: 0.5rem 1.25rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition-smooth);
            cursor: pointer;
            border: none;
            white-space: nowrap;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
        }
        .btn-login {
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--border-color);
        }
        .btn-login:hover {
            border-color: var(--accent-secondary);
            color: var(--accent-secondary);
            box-shadow: 0 0 12px rgba(0,240,255,0.15);
        }
        .btn-signup {
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            color: #fff;
            border: none;
            box-shadow: 0 0 15px rgba(0,82,255,0.3);
        }
        .btn-signup:hover {
            box-shadow: 0 0 25px rgba(0,240,255,0.45);
            transform: translateY(-1px);
            color: #fff;
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 0.25rem;
        }
        .page-hero {
            position: relative;
            padding: 8rem 1.5rem 4rem;
            background: var(--secondary-bg);
            text-align: left;
            border-bottom: 1px solid var(--border-color);
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .page-hero h1 {
            background: linear-gradient(135deg, #fff 30%, var(--accent-secondary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 1rem;
        }
        .page-hero .subtitle {
            font-size: 1.2rem;
            color: var(--text-secondary);
            max-width: 700px;
            margin-bottom: 2rem;
            line-height: 1.7;
        }
        .badge-row {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
            align-items: center;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.4rem 1.2rem;
            background: rgba(0,240,255,0.08);
            border: 1px solid var(--border-color);
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent-secondary);
            white-space: nowrap;
        }
        .badge i {
            font-size: 0.9rem;
        }
        .section {
            padding: 5rem 0;
        }
        .section-dark {
            background: var(--secondary-bg);
        }
        .section-header {
            margin-bottom: 3rem;
        }
        .section-header h2 {
            position: relative;
            padding-bottom: 1rem;
        }
        .section-header h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 60px;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-secondary), var(--accent-primary));
            border-radius: 2px;
        }
        .steps-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: grid;
            gap: 1.5rem;
        }
        .steps-list li {
            display: flex;
            gap: 1.25rem;
            align-items: flex-start;
            background: var(--card-bg);
            border-radius: var(--radius-md);
            padding: 1.75rem;
            border: 1px solid var(--border-color);
            transition: all var(--transition-smooth);
        }
        .steps-list li:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-glow);
        }
        .step-number {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            color: #fff;
            font-weight: 800;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .step-content h3 {
            margin-bottom: 0.5rem;
        }
        .step-content p {
            margin-bottom: 0;
        }
        .checklist-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }
        .checklist-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 2rem;
            transition: all var(--transition-smooth);
        }
        .checklist-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-glow);
        }
        .checklist-card .icon-box {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            background: rgba(0,240,255,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.25rem;
            font-size: 1.6rem;
            color: var(--accent-secondary);
        }
        .checklist-card h3 {
            margin-bottom: 0.75rem;
        }
        .checklist-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .checklist-card ul li {
            padding: 0.4rem 0;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            color: var(--text-secondary);
            font-size: 0.95rem;
        }
        .checklist-card ul li i {
            color: var(--accent-secondary);
            font-size: 0.85rem;
        }
        .warning-box {
            background: rgba(255, 69, 0, 0.08);
            border: 1px solid rgba(255, 69, 0, 0.3);
            border-radius: var(--radius-md);
            padding: 2rem;
            margin: 2rem 0;
        }
        .warning-box h4 {
            color: #FF4500;
            margin-bottom: 0.75rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .warning-box ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .warning-box ul li {
            padding: 0.35rem 0;
            color: var(--text-secondary);
            display: flex;
            align-items: flex-start;
            gap: 0.5rem;
        }
        .warning-box ul li i {
            color: #FF4500;
            margin-top: 0.3rem;
        }
        .faq-block {
            max-width: 900px;
            margin: 0 auto;
        }
        .faq-item {
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: 1rem;
            overflow: hidden;
            background: var(--card-bg);
            transition: all var(--transition-smooth);
        }
        .faq-item:hover {
            border-color: var(--border-hover);
        }
        .faq-question {
            padding: 1.25rem 1.75rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--text-primary);
            user-select: none;
            transition: background var(--transition-fast);
        }
        .faq-question:hover {
            background: rgba(0,240,255,0.05);
        }
        .faq-question i {
            transition: transform var(--transition-smooth);
            color: var(--accent-secondary);
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
            padding: 0 1.75rem;
        }
        .faq-item.active .faq-answer {
            max-height: 500px;
            padding: 0 1.75rem 1.5rem;
        }
        .faq-answer p {
            margin-bottom: 0;
            color: var(--text-secondary);
        }
        .cta-section {
            background: linear-gradient(135deg, rgba(0,82,255,0.1), rgba(0,240,255,0.08));
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            padding: 4rem 0;
            text-align: center;
        }
        .cta-section h2 {
            margin-bottom: 1rem;
        }
        .cta-section p {
            max-width: 600px;
            margin: 0 auto 2rem;
            font-size: 1.1rem;
        }
        .site-footer {
            background: var(--secondary-bg);
            padding: 3rem 0 1.5rem;
            border-top: 1px solid var(--border-color);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2rem;
        }
        .footer-col h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 1.25rem;
            color: var(--text-primary);
        }
        .footer-col a {
            display: block;
            padding: 0.35rem 0;
            color: var(--text-secondary);
            font-size: 0.95rem;
            transition: all var(--transition-fast);
            text-decoration: none;
        }
        .footer-col a:hover {
            color: var(--accent-secondary);
            padding-left: 0.25rem;
        }
        .footer-col a i {
            margin-right: 0.5rem;
            width: 16px;
            text-align: center;
        }
        .footer-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin-bottom: 1.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border-color);
        }
        .footer-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.5rem 1.25rem;
            background: rgba(0,240,255,0.06);
            border: 1px solid var(--border-color);
            border-radius: 50px;
            font-size: 0.85rem;
            color: var(--text-secondary);
            white-space: nowrap;
        }
        .footer-badge i {
            color: var(--accent-secondary);
        }
        .footer-bottom {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border-color);
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .footer-bottom p {
            margin-bottom: 0.25rem;
            color: var(--text-muted);
        }
        .fab-left {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 90;
            width: 52px;
            height: 52px;
            border-radius: 50px;
            background: rgba(8,9,15,0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-secondary);
            font-size: 1.4rem;
            cursor: pointer;
            transition: all var(--transition-smooth);
            box-shadow: 0 0 20px rgba(0,240,255,0.3);
            animation: fabPulse 2.5s ease-in-out infinite;
            text-decoration: none;
        }
        .fab-left::before {
            content: '';
            position: absolute;
            inset: -3px;
            border-radius: 50px;
            background: linear-gradient(135deg, var(--accent-secondary), var(--accent-primary));
            z-index: -1;
            opacity: 0.8;
        }
        .fab-left:hover {
            box-shadow: 0 0 35px rgba(0,240,255,0.5);
            color: #fff;
            transform: scale(1.08);
        }
        @keyframes fabPulse {
            0%, 100% { opacity: 0.8; }
            50% { opacity: 1; }
        }
        .fab-left .notify-dot {
            position: absolute;
            top: 4px;
            right: 6px;
            width: 10px;
            height: 10px;
            background: #FF007F;
            border-radius: 50%;
            animation: blink 1.2s ease-in-out infinite;
        }
        @keyframes blink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }

        @media (max-width: 1024px) {
            .main-nav {
                gap: 0;
            }
            .main-nav a {
                padding: 0.5rem 0.75rem;
                font-size: 0.9rem;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
        }
        @media (max-width: 768px) {
            .mobile-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: rgba(8,9,15,0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 1rem;
                border-bottom: 1px solid var(--border-color);
                z-index: 999;
            }
            .main-nav.show {
                display: flex;
            }
            .main-nav a {
                width: 100%;
                text-align: left;
                padding: 0.75rem 1rem;
                border-radius: var(--radius-sm);
            }
            .nav-actions .btn-nav {
                padding: 0.4rem 1rem;
                font-size: 0.85rem;
            }
            .site-header .container {
                height: 60px;
            }
            h1 {
                font-size: 1.75rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            .steps-list li {
                flex-direction: column;
                gap: 0.75rem;
            }
            .checklist-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
            .page-hero {
                padding: 6rem 1rem 3rem;
            }
            .section {
                padding: 3rem 0;
            }
            .badge-row {
                gap: 0.5rem;
            }
            .badge {
                font-size: 0.8rem;
                padding: 0.3rem 1rem;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .nav-actions {
                gap: 0.5rem;
            }
            .btn-nav {
                padding: 0.4rem 0.8rem;
                font-size: 0.8rem;
            }
            .fab-left {
                width: 44px;
                height: 44px;
                bottom: 4rem;
                left: 0.75rem;
                font-size: 1.2rem;
            }
        }