/* roulang page: index */
:root {
  --bg-primary: #0A0E14;
  --bg-secondary: #0F141C;
  --bg-card: #16202B;
  --bg-elevated: #1B2A3A;
  --accent-cyan: #00E5F0;
  --accent-blue: #0077FF;
  --accent-blue-dark: #0052CC;
  --accent-pink: #FF007F;
  --gradient-hero: linear-gradient(135deg, #0A0E14 0%, #0F141C 40%, #16202B 100%);
  --gradient-card: linear-gradient(160deg, rgba(22,32,43,0.9) 0%, rgba(15,20,28,0.95) 100%);
  --gradient-btn: linear-gradient(135deg, #00E5F0 0%, #0077FF 100%);
  --gradient-btn-hover: linear-gradient(135deg, #00C4D4 0%, #0052CC 100%);
  --text-primary: #FFFFFF;
  --text-secondary: #A3B5C8;
  --text-muted: #6A7F94;
  --border-thin: rgba(0,229,240,0.18);
  --border-glow: rgba(0,229,240,0.45);
  --shadow-card: 0 8px 32px rgba(0,0,0,0.45);
  --shadow-glow-cyan: 0 0 18px rgba(0,229,240,0.35);
  --shadow-glow-pink: 0 0 14px rgba(255,0,127,0.3);
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --font-heading: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
  --font-body: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { text-decoration: none; color: inherit; transition: color 0.2s ease; }
img { max-width: 100%; height: auto; display: block; }
button, .btn-custom {
  font-family: var(--font-body);
  cursor: pointer;
  border: none;
  outline: none;
  transition: all 0.25s ease;
}

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* NAVIGATION */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1050;
  background: rgba(10,14,20,0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-thin);
  transition: background 0.3s ease;
}
.site-header.scrolled { background: rgba(10,14,20,0.95); }
.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.logo-brand {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: -0.3px;
  background: var(--gradient-btn);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
}
.logo-brand span { font-weight: 400; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}
.nav-links a {
  display: flex;
  align-items: center;
  padding: 8px 16px;
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all 0.22s ease;
  white-space: nowrap;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
  background: rgba(0,229,240,0.1);
  box-shadow: inset 0 0 0 1px var(--border-glow);
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.btn-login {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-primary);
  padding: 8px 18px;
  border-radius: 50px;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.25);
}
.btn-login:hover { border-color: var(--accent-cyan); color: var(--accent-cyan); }
.btn-signup {
  font-weight: 700;
  font-size: 0.9rem;
  color: #0A0E14;
  padding: 9px 22px;
  border-radius: 50px;
  background: var(--gradient-btn);
  box-shadow: var(--shadow-glow-cyan);
}
.btn-signup:hover {
  background: var(--gradient-btn-hover);
  box-shadow: 0 0 24px rgba(0,229,240,0.5);
}

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

/* HERO */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 100px 0 80px;
  background: var(--gradient-hero);
  overflow: hidden;
}
.hero-bg-img {
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
  opacity: 0.18;
  z-index: 0;
}
.hero-container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.hero-text { max-width: 580px; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0,229,240,0.1);
  border: 1px solid var(--border-glow);
  border-radius: 50px;
  padding: 6px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-cyan);
  margin-bottom: 20px;
}
.hero-badge i { font-size: 1rem; }
.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.4rem, 4.5vw, 3.4rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
  color: var(--text-primary);
}
.hero-title em {
  font-style: normal;
  background: var(--gradient-btn);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 32px;
}
.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}
.btn-primary-hero {
  font-weight: 700;
  font-size: 1rem;
  padding: 14px 32px;
  border-radius: 50px;
  background: var(--gradient-btn);
  color: #0A0E14;
  box-shadow: var(--shadow-glow-cyan);
}
.btn-primary-hero:hover {
  background: var(--gradient-btn-hover);
  box-shadow: 0 0 28px rgba(0,229,240,0.55);
  transform: translateY(-2px);
}
.btn-outline-hero {
  font-weight: 600;
  font-size: 1rem;
  padding: 13px 30px;
  border-radius: 50px;
  border: 1.5px solid var(--border-glow);
  color: var(--accent-cyan);
  background: transparent;
}
.btn-outline-hero:hover {
  background: rgba(0,229,240,0.08);
  border-color: var(--accent-cyan);
}
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}
.hero-visual-card {
  position: relative;
  width: 300px;
  height: 540px;
  background: var(--bg-card);
  border-radius: 28px;
  overflow: hidden;
  border: 1.5px solid var(--border-glow);
  box-shadow: var(--shadow-glow-cyan), var(--shadow-card);
}
.hero-visual-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 26px;
}
.hero-visual-chip {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(10,14,20,0.85);
  backdrop-filter: blur(8px);
  border-radius: 50px;
  padding: 10px 24px;
  font-weight: 700;
  color: var(--accent-cyan);
  font-size: 0.9rem;
  white-space: nowrap;
  border: 1px solid var(--border-glow);
}

/* SECTIONS */
.section { padding: 70px 0; }
.section-header {
  margin-bottom: 40px;
}
.section-label {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--accent-cyan);
  margin-bottom: 8px;
}
.section-title {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 12px;
  line-height: 1.3;
}
.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 700px;
}

/* NAV PILLS CATEGORY */
.category-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.category-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: 50px;
  background: var(--bg-card);
  border: 1px solid var(--border-thin);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-secondary);
  transition: all 0.25s;
}
.category-pill:hover {
  border-color: var(--accent-cyan);
  color: var(--text-primary);
  box-shadow: var(--shadow-glow-cyan);
  transform: translateY(-2px);
}
.category-pill i { font-size: 1.1rem; color: var(--accent-cyan); }

/* HOT LIST */
.hot-list-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.hot-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-thin);
  transition: all 0.3s ease;
}
.hot-card:hover {
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow-cyan);
  transform: translateY(-4px);
}
.hot-card-img {
  height: 200px;
  overflow: hidden;
}
.hot-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hot-card-body {
  padding: 20px;
}
.hot-card-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 50px;
  background: rgba(255,0,127,0.15);
  color: var(--accent-pink);
  margin-bottom: 10px;
}
.hot-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.hot-card-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* NEWS LIST */
.news-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
}
.news-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.news-item {
  display: flex;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border-thin);
  transition: all 0.2s;
}
.news-item:hover { padding-left: 8px; }
.news-item-time {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-cyan);
  min-width: 70px;
}
.news-item-content h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}
.news-item-content p {
  font-size: 0.85rem;
  color: var(--text-muted);
}
.news-sidebar {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 24px;
  border: 1px solid var(--border-thin);
}
.news-sidebar h4 {
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 16px;
  color: var(--accent-cyan);
}
.news-sidebar-item {
  display: flex;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.news-sidebar-item span {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* MEMBERSHIP */
.membership-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}
.membership-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  border: 1px solid var(--border-thin);
  text-align: left;
  transition: all 0.3s;
}
.membership-card:hover {
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-glow-cyan);
}
.membership-card h4 {
  font-weight: 700;
  font-size: 1.2rem;
  margin-bottom: 8px;
}
.membership-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}
.membership-badge {
  display: inline-block;
  font-weight: 700;
  font-size: 0.8rem;
  padding: 6px 14px;
  border-radius: 50px;
  background: rgba(0,229,240,0.12);
  color: var(--accent-cyan);
}

/* AGENDA TIMELINE */
.timeline {
  position: relative;
  padding-left: 30px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border-glow);
}
.timeline-item {
  position: relative;
  margin-bottom: 28px;
  padding-left: 32px;
}
.timeline-dot {
  position: absolute;
  left: -28px;
  top: 4px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: var(--shadow-glow-cyan);
}
.timeline-time {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-cyan);
}
.timeline-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 4px;
}
.timeline-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* SCENARIO STEPS */
.scenario-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
}
.scenario-step {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 24px;
  border: 1px solid var(--border-thin);
}
.scenario-step-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent-cyan);
  line-height: 1;
}
.scenario-step-text h4 {
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 4px;
}
.scenario-step-text p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* FOOTER */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-thin);
  padding: 48px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 32px;
  margin-bottom: 32px;
}
.footer-col h4 {
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 14px;
  color: var(--accent-cyan);
}
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a {
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: color 0.2s;
}
.footer-col ul li a:hover { color: var(--accent-cyan); }
.footer-bottom {
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  border-top: 1px solid rgba(255,255,255,0.05);
  padding-top: 20px;
}

/* FAB */
.fab-support {
  position: fixed;
  left: 24px;
  bottom: 96px;
  z-index: 1060;
  width: 52px;
  height: 52px;
  border-radius: 50px;
  background: rgba(15,20,28,0.85);
  backdrop-filter: blur(10px);
  border: 1.5px solid var(--border-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  font-size: 1.4rem;
  box-shadow: var(--shadow-glow-cyan);
  cursor: pointer;
  transition: all 0.25s;
  animation: fabFloat 3s ease-in-out infinite;
}
.fab-support:hover {
  box-shadow: 0 0 28px rgba(0,229,240,0.6);
  transform: scale(1.1);
}
@keyframes fabFloat {
  0%,100%{ transform: translateY(0); }
  50%{ transform: translateY(-6px); }
}
.fab-notif {
  position: absolute;
  top: -3px;
  right: -3px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent-pink);
  box-shadow: var(--shadow-glow-pink);
}

/* RESPONSIVE */
@media (max-width: 1024px) {
  .hero-container { grid-template-columns: 1fr; gap: 32px; }
  .hero-visual { justify-content: flex-start; }
  .news-layout { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .mobile-toggle { display: block; }
  .hero-section { padding: 120px 0 60px; min-height: auto; }
  .hero-visual-card { width: 220px; height: 400px; }
  .section-title { font-size: 1.6rem; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .hero-title { font-size: 1.9rem; }
  .hero-cta-group { flex-direction: column; align-items: stretch; }
  .category-pills { gap: 6px; }
  .category-pill { padding: 8px 14px; font-size: 0.8rem; }
}

/* roulang page: article */
:root {
            --bg-primary: #0A0E14;
            --bg-secondary: #0F141C;
            --bg-card: #16202B;
            --bg-elevated: #1B2A3A;
            --accent-cyan: #00E5F0;
            --accent-blue: #0077FF;
            --accent-blue-dark: #0052CC;
            --accent-pink: #FF007F;
            --gradient-hero: linear-gradient(135deg, #0A0E14 0%, #0F141C 40%, #16202B 100%);
            --gradient-card: linear-gradient(160deg, rgba(22,32,43,0.9) 0%, rgba(15,20,28,0.95) 100%);
            --gradient-btn: linear-gradient(135deg, #00E5F0 0%, #0077FF 100%);
            --gradient-btn-hover: linear-gradient(135deg, #00C4D4 0%, #0052CC 100%);
            --text-primary: #FFFFFF;
            --text-secondary: #A3B5C8;
            --text-muted: #6A7F94;
            --border-thin: rgba(0,229,240,0.18);
            --border-glow: rgba(0,229,240,0.45);
            --shadow-card: 0 8px 32px rgba(0,0,0,0.45);
            --shadow-glow-cyan: 0 0 18px rgba(0,229,240,0.35);
            --shadow-glow-pink: 0 0 14px rgba(255,0,127,0.3);
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --font-heading: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
            --font-body: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-body);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, .btn-custom {
            font-family: var(--font-body);
            cursor: pointer;
            border: none;
            outline: none;
            transition: all 0.25s ease;
        }
        .container {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: rgba(10,14,20,0.82);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-thin);
            transition: background 0.3s ease;
        }
        .site-header.scrolled {
            background: rgba(10,14,20,0.95);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .logo-brand {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.35rem;
            letter-spacing: -0.3px;
            background: var(--gradient-btn);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
        }
        .logo-brand span {
            font-weight: 400;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
        }
        .nav-links a {
            display: flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 50px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all 0.22s ease;
            white-space: nowrap;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--text-primary);
            background: rgba(0,229,240,0.1);
            box-shadow: inset 0 0 0 1px var(--border-glow);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn-login {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-primary);
            padding: 8px 18px;
            border-radius: 50px;
            background: transparent;
            border: 1px solid rgba(255,255,255,0.25);
        }
        .btn-login:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
        }
        .btn-signup {
            font-weight: 700;
            font-size: 0.9rem;
            color: #0A0E14;
            padding: 9px 22px;
            border-radius: 50px;
            background: var(--gradient-btn);
            box-shadow: var(--shadow-glow-cyan);
        }
        .btn-signup:hover {
            background: var(--gradient-btn-hover);
            box-shadow: 0 0 24px rgba(0,229,240,0.5);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            padding: 4px;
        }
        .article-main {
            padding-top: 100px;
            padding-bottom: 80px;
            min-height: 80vh;
            background: var(--bg-primary);
        }
        .article-container {
            max-width: 860px;
            margin: 0 auto;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 40px 48px;
            border: 1px solid var(--border-thin);
            box-shadow: var(--shadow-card);
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 24px;
            flex-wrap: wrap;
        }
        .article-category-badge {
            display: inline-block;
            background: rgba(0,229,240,0.12);
            color: var(--accent-cyan);
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            border: 1px solid var(--border-thin);
        }
        .article-date {
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .article-title {
            font-family: var(--font-heading);
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 20px;
            color: var(--text-primary);
        }
        .article-featured-img {
            width: 100%;
            max-height: 460px;
            object-fit: cover;
            border-radius: var(--radius-md);
            margin-bottom: 32px;
            border: 1px solid var(--border-thin);
        }
        .article-body {
            font-size: 1.05rem;
            line-height: 1.75;
            color: var(--text-secondary);
        }
        .article-body h2 {
            font-family: var(--font-heading);
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 32px 0 16px;
            padding-bottom: 8px;
            border-bottom: 2px solid var(--border-glow);
        }
        .article-body h3 {
            font-family: var(--font-heading);
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 24px 0 12px;
        }
        .article-body p {
            margin-bottom: 18px;
        }
        .article-body ul, .article-body ol {
            margin-left: 24px;
            margin-bottom: 18px;
        }
        .article-body li {
            margin-bottom: 8px;
        }
        .article-body img {
            border-radius: var(--radius-sm);
            margin: 20px 0;
            border: 1px solid var(--border-thin);
        }
        .article-not-found {
            text-align: center;
            padding: 60px 20px;
        }
        .article-not-found h2 {
            font-size: 2rem;
            color: var(--text-primary);
            margin-bottom: 16px;
        }
        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: 28px;
            font-size: 1.1rem;
        }
        .btn-back-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 1rem;
            padding: 12px 28px;
            border-radius: 50px;
            background: var(--gradient-btn);
            color: #0A0E14;
            box-shadow: var(--shadow-glow-cyan);
            transition: all 0.25s ease;
        }
        .btn-back-home:hover {
            background: var(--gradient-btn-hover);
            box-shadow: 0 0 24px rgba(0,229,240,0.55);
            transform: translateY(-2px);
            color: #0A0E14;
        }
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-thin);
            padding: 48px 0 24px;
            color: var(--text-secondary);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 36px;
            margin-bottom: 36px;
        }
        .footer-col h4 {
            font-family: var(--font-heading);
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col li {
            margin-bottom: 10px;
        }
        .footer-col a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: color 0.2s ease;
        }
        .footer-col a:hover {
            color: var(--accent-cyan);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-thin);
            padding-top: 20px;
            text-align: center;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .fab-float {
            position: fixed;
            left: 24px;
            bottom: 96px;
            z-index: 50;
            width: 52px;
            height: 52px;
            border-radius: 50px;
            background: rgba(10,14,20,0.85);
            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-cyan);
            font-size: 1.5rem;
            cursor: pointer;
            box-shadow: 0 0 15px rgba(0,229,240,0.45), 0 4px 20px rgba(0,0,0,0.4);
            transition: all 0.3s ease;
            animation: fab-breathe 2.8s ease-in-out infinite;
        }
        .fab-float::before {
            content: '';
            position: absolute;
            inset: -3px;
            border-radius: 52px;
            padding: 2px;
            background: linear-gradient(135deg, #00E5F0, #FF007F);
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
        }
        @keyframes fab-breathe {
            0%, 100% { opacity: 0.7; transform: translateY(0); }
            50% { opacity: 1; transform: translateY(-6px); }
        }
        .fab-float:hover {
            opacity: 1;
            transform: scale(1.12);
            box-shadow: 0 0 26px rgba(0,229,240,0.7), 0 6px 24px rgba(0,0,0,0.5);
            color: #fff;
        }
        @media (max-width: 1024px) {
            .article-container {
                padding: 32px 28px;
            }
            .article-title {
                font-size: 2rem;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .article-main {
                padding-top: 90px;
                padding-bottom: 60px;
            }
            .article-container {
                padding: 24px 20px;
                border-radius: 0;
                border-left: none;
                border-right: none;
            }
            .article-title {
                font-size: 1.6rem;
            }
            .article-body {
                font-size: 1rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .fab-float {
                left: 16px;
                bottom: 80px;
                width: 46px;
                height: 46px;
                font-size: 1.3rem;
            }
        }
        @media (max-width: 520px) {
            .nav-container {
                height: 60px;
            }
            .logo-brand {
                font-size: 1.1rem;
            }
            .btn-login, .btn-signup {
                font-size: 0.78rem;
                padding: 6px 14px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .article-container {
                padding: 20px 16px;
            }
            .article-title {
                font-size: 1.4rem;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #0A0E14;
            --bg-secondary: #0F141C;
            --bg-card: #16202B;
            --bg-elevated: #1B2A3A;
            --accent-cyan: #00E5F0;
            --accent-blue: #0077FF;
            --accent-blue-dark: #0052CC;
            --accent-pink: #FF007F;
            --gradient-hero: linear-gradient(135deg, #0A0E14 0%, #0F141C 40%, #16202B 100%);
            --gradient-card: linear-gradient(160deg, rgba(22,32,43,0.9) 0%, rgba(15,20,28,0.95) 100%);
            --gradient-btn: linear-gradient(135deg, #00E5F0 0%, #0077FF 100%);
            --gradient-btn-hover: linear-gradient(135deg, #00C4D4 0%, #0052CC 100%);
            --text-primary: #FFFFFF;
            --text-secondary: #A3B5C8;
            --text-muted: #6A7F94;
            --border-thin: rgba(0,229,240,0.18);
            --border-glow: rgba(0,229,240,0.45);
            --shadow-card: 0 8px 32px rgba(0,0,0,0.45);
            --shadow-glow-cyan: 0 0 18px rgba(0,229,240,0.35);
            --shadow-glow-pink: 0 0 14px rgba(255,0,127,0.3);
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --font-heading: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
            --font-body: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
        }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-body);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a { text-decoration: none; color: inherit; transition: color 0.2s ease; }
        img { max-width: 100%; height: auto; display: block; }
        button, .btn-custom {
            font-family: var(--font-body);
            cursor: pointer;
            border: none;
            outline: none;
            transition: all 0.25s ease;
        }
        .container {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }
        /* NAVIGATION */
        .site-header {
            position: fixed;
            top: 0; left: 0; right: 0;
            z-index: 1050;
            background: rgba(10,14,20,0.82);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-thin);
            transition: background 0.3s ease;
        }
        .site-header.scrolled { background: rgba(10,14,20,0.95); }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .logo-brand {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.35rem;
            letter-spacing: -0.3px;
            background: var(--gradient-btn);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
        }
        .logo-brand span { font-weight: 400; }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            display: flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 50px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all 0.22s ease;
            white-space: nowrap;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--text-primary);
            background: rgba(0,229,240,0.1);
            box-shadow: inset 0 0 0 1px var(--border-glow);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn-login {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-primary);
            padding: 8px 18px;
            border-radius: 50px;
            background: transparent;
            border: 1px solid rgba(255,255,255,0.25);
        }
        .btn-login:hover { border-color: var(--accent-cyan); color: var(--accent-cyan); }
        .btn-signup {
            font-weight: 700;
            font-size: 0.9rem;
            color: #0A0E14;
            padding: 9px 22px;
            border-radius: 50px;
            background: var(--gradient-btn);
            box-shadow: var(--shadow-glow-cyan);
        }
        .btn-signup:hover {
            background: var(--gradient-btn-hover);
            box-shadow: 0 0 24px rgba(0,229,240,0.5);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            padding: 4px;
        }
        /* HERO */
        .hero-section {
            position: relative;
            min-height: 80vh;
            display: flex;
            align-items: center;
            padding: 120px 0 80px;
            background: var(--gradient-hero);
            overflow: hidden;
        }
        .hero-bg-img {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.jpg') center/cover no-repeat;
            opacity: 0.14;
            z-index: 0;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10,14,20,0.3) 0%, rgba(15,20,28,0.85) 100%);
        }
        .hero-container {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 48px;
            align-items: center;
        }
        .hero-text { max-width: 600px; }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255,0,127,0.12);
            border: 1px solid rgba(255,0,127,0.4);
            border-radius: 50px;
            padding: 6px 16px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent-pink);
            margin-bottom: 24px;
        }
        .hero-badge i { font-size: 1rem; }
        .hero-title {
            font-family: var(--font-heading);
            font-size: clamp(2.2rem, 4.2vw, 3.2rem);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            color: var(--text-primary);
        }
        .hero-title em {
            font-style: normal;
            background: var(--gradient-btn);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-desc {
            font-size: 1.1rem;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 32px;
        }
        .hero-stats-mini {
            display: flex;
            gap: 24px;
            margin-bottom: 32px;
        }
        .hero-stat-item {
            text-align: left;
        }
        .hero-stat-num {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--accent-cyan);
            line-height: 1.2;
        }
        .hero-stat-label {
            font-size: 0.85rem;
            color: var(--text-secondary);
        }
        .btn-primary-hero {
            font-weight: 700;
            font-size: 1rem;
            padding: 14px 32px;
            border-radius: 50px;
            background: var(--gradient-btn);
            color: #0A0E14;
            box-shadow: var(--shadow-glow-cyan);
            display: inline-block;
        }
        .btn-primary-hero:hover {
            background: var(--gradient-btn-hover);
            box-shadow: 0 0 28px rgba(0,229,240,0.55);
            transform: translateY(-2px);
        }
        .hero-visual {
            position: relative;
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .hero-visual-card {
            background: var(--gradient-card);
            border: 1px solid var(--border-thin);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.6);
            width: 100%;
            max-width: 380px;
        }
        .hero-visual-card img {
            border-radius: var(--radius-md);
            margin-bottom: 20px;
        }
        .hero-card-tag {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--accent-cyan);
            background: rgba(0,229,240,0.1);
            display: inline-block;
            padding: 4px 12px;
            border-radius: 50px;
            margin-bottom: 8px;
        }
        .hero-card-title {
            font-weight: 700;
            font-size: 1.2rem;
            margin-bottom: 4px;
        }
        .hero-card-desc {
            font-size: 0.9rem;
            color: var(--text-secondary);
        }
        /* SECTION GENERAL */
        .section-block {
            padding: 80px 0;
        }
        .section-header {
            margin-bottom: 48px;
        }
        .section-label {
            font-size: 0.85rem;
            font-weight: 700;
            letter-spacing: 0.5px;
            color: var(--accent-cyan);
            text-transform: uppercase;
            display: block;
            margin-bottom: 8px;
        }
        .section-title {
            font-family: var(--font-heading);
            font-size: clamp(1.8rem, 3vw, 2.4rem);
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-primary);
            margin-bottom: 12px;
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 700px;
            line-height: 1.6;
        }
        /* STRATEGY CARDS */
        .strategy-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }
        .strategy-card {
            background: var(--bg-card);
            border: 1px solid var(--border-thin);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }
        .strategy-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow-cyan);
            transform: translateY(-4px);
        }
        .strategy-card .card-icon {
            font-size: 2rem;
            color: var(--accent-cyan);
            margin-bottom: 16px;
        }
        .strategy-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .strategy-card p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin: 0;
        }
        .card-number {
            position: absolute;
            top: 16px;
            right: 16px;
            font-size: 2.5rem;
            font-weight: 800;
            color: rgba(0,229,240,0.08);
            line-height: 1;
        }
        /* TIPS LIST */
        .tips-showcase {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .tips-image-wrapper {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
        }
        .tips-image-wrapper img {
            border-radius: var(--radius-lg);
        }
        .tips-list {
            list-style: none;
            padding: 0;
        }
        .tips-list li {
            display: flex;
            gap: 16px;
            margin-bottom: 28px;
            align-items: flex-start;
        }
        .tip-icon {
            background: rgba(0,229,240,0.12);
            border-radius: 50%;
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.2rem;
            flex-shrink: 0;
        }
        .tip-content h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .tip-content p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin: 0;
        }
        /* PROCESS STEPS */
        .process-steps {
            display: flex;
            flex-wrap: wrap;
            gap: 0;
            counter-reset: step;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-thin);
        }
        .step-item {
            flex: 1 1 200px;
            padding: 32px 24px;
            position: relative;
            background: transparent;
            transition: background 0.2s;
            counter-increment: step;
            border-right: 1px solid var(--border-thin);
        }
        .step-item:last-child { border-right: none; }
        .step-item:hover { background: var(--bg-elevated); }
        .step-item::before {
            content: counter(step);
            font-size: 2.8rem;
            font-weight: 800;
            color: rgba(0,229,240,0.15);
            display: block;
            margin-bottom: 12px;
            line-height: 1;
        }
        .step-item h4 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .step-item p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin: 0;
        }
        /* CTA BANNER */
        .cta-banner {
            background: var(--gradient-card);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: 48px;
            text-align: center;
            box-shadow: var(--shadow-glow-cyan);
        }
        .cta-banner h2 {
            font-size: clamp(1.6rem, 2.5vw, 2rem);
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-banner p {
            color: var(--text-secondary);
            margin-bottom: 24px;
            font-size: 1.05rem;
        }
        .btn-cta-large {
            font-weight: 700;
            font-size: 1.05rem;
            padding: 14px 36px;
            border-radius: 50px;
            background: var(--gradient-btn);
            color: #0A0E14;
            box-shadow: var(--shadow-glow-cyan);
            display: inline-block;
        }
        .btn-cta-large:hover {
            background: var(--gradient-btn-hover);
            box-shadow: 0 0 28px rgba(0,229,240,0.6);
        }
        /* FAQ */
        .faq-accordion .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border-thin);
            border-radius: var(--radius-sm) !important;
            margin-bottom: 12px;
            overflow: hidden;
        }
        .accordion-button {
            background: transparent;
            color: var(--text-primary);
            font-weight: 600;
            box-shadow: none;
            padding: 18px 24px;
        }
        .accordion-button:not(.collapsed) {
            background: var(--bg-elevated);
            color: var(--accent-cyan);
            box-shadow: none;
        }
        .accordion-button::after {
            filter: brightness(0) invert(1);
        }
        .accordion-body {
            background: var(--bg-secondary);
            color: var(--text-secondary);
            padding: 16px 24px 24px;
            font-size: 0.95rem;
            line-height: 1.6;
        }
        /* FOOTER */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-thin);
            padding: 48px 0 24px;
            margin-top: 40px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--text-primary);
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: var(--text-secondary);
            font-size: 0.9rem;
        }
        .footer-col ul li a:hover {
            color: var(--accent-cyan);
        }
        .footer-bottom {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid var(--border-thin);
            color: var(--text-muted);
            font-size: 0.85rem;
        }
        /* RESPONSIVE */
        @media (max-width: 992px) {
            .hero-container {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .tips-showcase {
                grid-template-columns: 1fr;
            }
            .hero-visual {
                order: -1;
            }
            .hero-visual-card {
                max-width: 100%;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background: rgba(10,14,20,0.98);
                flex-direction: column;
                padding: 16px;
                border-bottom: 1px solid var(--border-thin);
            }
            .nav-links.show {
                display: flex;
            }
            .mobile-toggle {
                display: block;
            }
            .process-steps {
                flex-direction: column;
            }
            .step-item {
                border-right: none;
                border-bottom: 1px solid var(--border-thin);
            }
            .step-item:last-child { border-bottom: none; }
        }

/* roulang page: category2 */
:root {
  --bg-primary: #0A0E14;
  --bg-secondary: #0F141C;
  --bg-card: #16202B;
  --bg-elevated: #1B2A3A;
  --accent-cyan: #00E5F0;
  --accent-blue: #0077FF;
  --accent-blue-dark: #0052CC;
  --accent-pink: #FF007F;
  --gradient-hero: linear-gradient(135deg, #0A0E14 0%, #0F141C 40%, #16202B 100%);
  --gradient-card: linear-gradient(160deg, rgba(22,32,43,0.9) 0%, rgba(15,20,28,0.95) 100%);
  --gradient-btn: linear-gradient(135deg, #00E5F0 0%, #0077FF 100%);
  --gradient-btn-hover: linear-gradient(135deg, #00C4D4 0%, #0052CC 100%);
  --text-primary: #FFFFFF;
  --text-secondary: #A3B5C8;
  --text-muted: #6A7F94;
  --border-thin: rgba(0,229,240,0.18);
  --border-glow: rgba(0,229,240,0.45);
  --shadow-card: 0 8px 32px rgba(0,0,0,0.45);
  --shadow-glow-cyan: 0 0 18px rgba(0,229,240,0.35);
  --shadow-glow-pink: 0 0 14px rgba(255,0,127,0.3);
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --font-heading: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
  --font-body: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
}
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { text-decoration: none; color: inherit; transition: color 0.2s ease; }
img { max-width: 100%; height: auto; display: block; }
button, .btn-custom {
  font-family: var(--font-body);
  cursor: pointer;
  border: none;
  outline: none;
  transition: all 0.25s ease;
}
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1050;
  background: rgba(10,14,20,0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-thin);
}
.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.logo-brand {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: -0.3px;
  background: var(--gradient-btn);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  display: flex;
  align-items: center;
  padding: 8px 16px;
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all 0.22s ease;
  white-space: nowrap;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
  background: rgba(0,229,240,0.1);
  box-shadow: inset 0 0 0 1px var(--border-glow);
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.btn-login {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-primary);
  padding: 8px 18px;
  border-radius: 50px;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.25);
}
.btn-login:hover { border-color: var(--accent-cyan); color: var(--accent-cyan); }
.btn-signup {
  font-weight: 700;
  font-size: 0.9rem;
  color: #0A0E14;
  padding: 9px 22px;
  border-radius: 50px;
  background: var(--gradient-btn);
  box-shadow: var(--shadow-glow-cyan);
}
.btn-signup:hover {
  background: var(--gradient-btn-hover);
  box-shadow: 0 0 24px rgba(0,229,240,0.5);
}
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.6rem;
  padding: 4px;
}
.page-banner {
  position: relative;
  padding: 140px 0 80px;
  background: var(--gradient-hero);
  overflow: hidden;
  border-bottom: 1px solid var(--border-thin);
}
.banner-bg {
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-3.jpg') center/cover no-repeat;
  opacity: 0.12;
  z-index: 0;
}
.banner-content {
  position: relative;
  z-index: 2;
  max-width: 820px;
}
.banner-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0,229,240,0.1);
  border: 1px solid var(--border-glow);
  border-radius: 50px;
  padding: 6px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-cyan);
  margin-bottom: 20px;
}
.banner-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 16px;
  color: var(--text-primary);
}
.banner-title em {
  font-style: normal;
  background: var(--gradient-btn);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.banner-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.65;
}
.section {
  padding: 70px 0;
}
.section-header {
  margin-bottom: 44px;
}
.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--accent-cyan);
  margin-bottom: 10px;
}
.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 2.8vw, 2.2rem);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 12px;
  color: var(--text-primary);
}
.section-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 720px;
}
.strategy-card {
  background: var(--bg-card);
  border: 1px solid var(--border-thin);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: all 0.3s ease;
  height: 100%;
  position: relative;
  overflow: hidden;
}
.strategy-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-btn);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.strategy-card:hover {
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow-cyan);
  transform: translateY(-4px);
}
.strategy-card:hover::before {
  opacity: 1;
}
.strategy-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, rgba(0,229,240,0.15) 0%, rgba(0,119,255,0.15) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--accent-cyan);
  margin-bottom: 16px;
}
.strategy-title {
  font-weight: 700;
  font-size: 1.15rem;
  margin-bottom: 10px;
  color: var(--text-primary);
}
.strategy-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 0;
}
.step-vertical {
  display: flex;
  flex-direction: column;
  gap: 32px;
  max-width: 820px;
}
.step-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}
.step-num {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient-btn);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
  color: #0A0E14;
}
.step-body h5 {
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: 6px;
  color: var(--text-primary);
}
.step-body p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 0;
  line-height: 1.6;
}
.tip-highlight {
  background: linear-gradient(135deg, rgba(0,229,240,0.08) 0%, rgba(0,119,255,0.05) 100%);
  border: 1px solid var(--border-thin);
  border-radius: var(--radius-md);
  padding: 24px;
  position: relative;
}
.tip-highlight i {
  color: var(--accent-cyan);
  font-size: 1.3rem;
  margin-right: 10px;
}
.tip-highlight p {
  font-size: 0.98rem;
  color: var(--text-secondary);
  margin: 12px 0 0;
  line-height: 1.7;
}
.faq-section {
  background: var(--bg-secondary);
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-thin);
  border-radius: var(--radius-md);
  padding: 18px 24px;
  margin-bottom: 12px;
  cursor: pointer;
  transition: all 0.25s ease;
}
.faq-item:hover {
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow-cyan);
}
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--text-primary);
}
.faq-a {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-top: 12px;
  display: none;
}
.faq-item.open .faq-a { display: block; }
.faq-item.open .faq-q i { transform: rotate(180deg); }
.faq-q i { transition: transform 0.25s ease; }
.cta-section {
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
  border-top: 1px solid var(--border-thin);
}
.cta-bg {
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
  opacity: 0.1;
  z-index: 0;
}
.cta-content {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 28px;
}
.cta-title {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 800;
  color: var(--text-primary);
}
.btn-cta-primary {
  font-weight: 700;
  font-size: 1rem;
  padding: 14px 36px;
  border-radius: 50px;
  background: var(--gradient-btn);
  color: #0A0E14;
  box-shadow: var(--shadow-glow-cyan);
  white-space: nowrap;
}
.btn-cta-primary:hover {
  background: var(--gradient-btn-hover);
  box-shadow: 0 0 28px rgba(0,229,240,0.55);
  transform: translateY(-2px);
}
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-thin);
  padding: 60px 0 30px;
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 40px;
}
.footer-col h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.15rem;
  margin-bottom: 16px;
  color: var(--accent-cyan);
}
.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a {
  font-size: 0.95rem;
  color: var(--text-secondary);
  transition: color 0.2s;
}
.footer-col ul li a:hover { color: var(--accent-cyan); }
.footer-bottom {
  text-align: center;
  padding-top: 28px;
  border-top: 1px solid var(--border-thin);
}
.footer-bottom p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0;
}
.fab-left {
  position: fixed;
  left: 20px;
  bottom: 80px;
  z-index: 1040;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: rgba(22,32,43,0.75);
  backdrop-filter: blur(10px);
  border: 1.5px solid var(--border-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--accent-cyan);
  box-shadow: 0 0 16px rgba(0,229,240,0.3);
  transition: all 0.25s ease;
  animation: floatSlow 3s ease-in-out infinite;
}
.fab-left:hover {
  transform: scale(1.12);
  box-shadow: 0 0 28px rgba(0,229,240,0.55);
  background: rgba(0,229,240,0.12);
}
@keyframes floatSlow {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    background: rgba(10,14,20,0.96);
    backdrop-filter: blur(16px);
    flex-direction: column;
    padding: 20px;
    gap: 4px;
    display: none;
    border-bottom: 1px solid var(--border-thin);
  }
  .nav-links.active { display: flex; }
  .nav-links a { width: 100%; justify-content: center; }
  .mobile-toggle { display: block; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .cta-content { flex-direction: column; text-align: center; }
  .banner-title { font-size: 1.7rem; }
  .step-item { flex-direction: column; gap: 12px; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .nav-actions { gap: 8px; }
  .btn-login, .btn-signup { font-size: 0.78rem; padding: 7px 14px; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .section { padding: 50px 0; }
  .banner-title { font-size: 1.5rem; }
}

/* roulang page: category3 */
:root {
            --bg-primary: #0A0E14;
            --bg-secondary: #0F141C;
            --bg-card: #16202B;
            --bg-elevated: #1B2A3A;
            --accent-cyan: #00E5F0;
            --accent-blue: #0077FF;
            --accent-blue-dark: #0052CC;
            --accent-pink: #FF007F;
            --gradient-hero: linear-gradient(135deg, #0A0E14 0%, #0F141C 40%, #16202B 100%);
            --gradient-card: linear-gradient(160deg, rgba(22,32,43,0.9) 0%, rgba(15,20,28,0.95) 100%);
            --gradient-btn: linear-gradient(135deg, #00E5F0 0%, #0077FF 100%);
            --gradient-btn-hover: linear-gradient(135deg, #00C4D4 0%, #0052CC 100%);
            --gradient-gold: linear-gradient(135deg, #FFD700 0%, #FF9F00 100%);
            --text-primary: #FFFFFF;
            --text-secondary: #A3B5C8;
            --text-muted: #6A7F94;
            --border-thin: rgba(0,229,240,0.18);
            --border-glow: rgba(0,229,240,0.45);
            --border-gold: rgba(255,215,0,0.4);
            --shadow-card: 0 8px 32px rgba(0,0,0,0.45);
            --shadow-glow-cyan: 0 0 18px rgba(0,229,240,0.35);
            --shadow-glow-pink: 0 0 14px rgba(255,0,127,0.3);
            --shadow-glow-gold: 0 0 20px rgba(255,215,0,0.3);
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --font-heading: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
            --font-body: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
        }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-body);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a { text-decoration: none; color: inherit; transition: color 0.2s ease; }
        img { max-width: 100%; height: auto; display: block; }
        button, .btn-custom {
            font-family: var(--font-body);
            cursor: pointer;
            border: none;
            outline: none;
            transition: all 0.25s ease;
        }
        .container {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-header {
            position: fixed;
            top: 0; left: 0; right: 0;
            z-index: 1050;
            background: rgba(10,14,20,0.82);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-thin);
            transition: background 0.3s ease;
        }
        .site-header.scrolled { background: rgba(10,14,20,0.95); }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .logo-brand {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.35rem;
            letter-spacing: -0.3px;
            background: var(--gradient-btn);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            display: flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 50px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all 0.22s ease;
            white-space: nowrap;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--text-primary);
            background: rgba(0,229,240,0.1);
            box-shadow: inset 0 0 0 1px var(--border-glow);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn-login {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-primary);
            padding: 8px 18px;
            border-radius: 50px;
            background: transparent;
            border: 1px solid rgba(255,255,255,0.25);
        }
        .btn-login:hover { border-color: var(--accent-cyan); color: var(--accent-cyan); }
        .btn-signup {
            font-weight: 700;
            font-size: 0.9rem;
            color: #0A0E14;
            padding: 9px 22px;
            border-radius: 50px;
            background: var(--gradient-btn);
            box-shadow: var(--shadow-glow-cyan);
        }
        .btn-signup:hover {
            background: var(--gradient-btn-hover);
            box-shadow: 0 0 24px rgba(0,229,240,0.5);
            transform: translateY(-1px);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            padding: 4px;
        }
        .page-hero {
            position: relative;
            padding: 120px 0 80px;
            background: var(--gradient-hero);
            overflow: hidden;
            border-bottom: 1px solid var(--border-thin);
        }
        .page-hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            opacity: 0.12;
            z-index: 0;
        }
        .page-hero-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
            text-align: left;
        }
        .page-hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255,215,0,0.12);
            border: 1px solid var(--border-gold);
            border-radius: 50px;
            padding: 6px 18px;
            font-size: 0.85rem;
            font-weight: 600;
            color: #FFD700;
            margin-bottom: 20px;
        }
        .page-hero-title {
            font-family: var(--font-heading);
            font-size: clamp(2rem, 3.8vw, 2.8rem);
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 18px;
        }
        .page-hero-title em {
            font-style: normal;
            background: var(--gradient-gold);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-hero-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 28px;
        }
        .page-hero-form {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
        }
        .page-hero-input {
            flex: 1 1 260px;
            padding: 14px 20px;
            border-radius: 50px;
            border: 1px solid var(--border-thin);
            background: var(--bg-card);
            color: var(--text-primary);
            font-size: 0.95rem;
            outline: none;
            transition: border-color 0.25s;
        }
        .page-hero-input:focus { border-color: var(--accent-cyan); }
        .page-hero-input::placeholder { color: var(--text-muted); }
        .btn-hero-submit {
            font-weight: 700;
            padding: 14px 30px;
            border-radius: 50px;
            background: var(--gradient-gold);
            color: #0A0E14;
            box-shadow: var(--shadow-glow-gold);
            white-space: nowrap;
        }
        .btn-hero-submit:hover { opacity: 0.9; transform: translateY(-2px); }
        .section { padding: 70px 0; }
        .section-label {
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            color: #FFD700;
            margin-bottom: 8px;
        }
        .section-title {
            font-family: var(--font-heading);
            font-size: clamp(1.7rem, 2.8vw, 2.2rem);
            font-weight: 700;
            margin-bottom: 12px;
        }
        .section-desc {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            max-width: 600px;
            margin-bottom: 36px;
        }
        .promo-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: 24px;
        }
        .promo-card {
            background: var(--gradient-card);
            border: 1px solid var(--border-thin);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
            gap: 16px;
            position: relative;
            overflow: hidden;
        }
        .promo-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card);
            transform: translateY(-4px);
        }
        .promo-card-tag {
            position: absolute;
            top: 16px;
            right: 16px;
            background: var(--accent-pink);
            color: white;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 50px;
            letter-spacing: 0.5px;
            box-shadow: var(--shadow-glow-pink);
        }
        .promo-card-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: rgba(0,229,240,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent-cyan);
        }
        .promo-card-title {
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--text-primary);
        }
        .promo-card-desc {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .promo-card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .promo-card-btn {
            align-self: flex-start;
            font-weight: 600;
            font-size: 0.9rem;
            padding: 10px 24px;
            border-radius: 50px;
            border: 1px solid var(--border-glow);
            color: var(--accent-cyan);
            background: transparent;
            margin-top: auto;
        }
        .promo-card-btn:hover {
            background: rgba(0,229,240,0.1);
            border-color: var(--accent-cyan);
        }
        .steps-list {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .steps-list li {
            display: flex;
            gap: 18px;
            align-items: flex-start;
            padding: 20px 24px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border-left: 3px solid var(--accent-cyan);
        }
        .step-num {
            font-weight: 800;
            font-size: 1.3rem;
            color: var(--accent-cyan);
            min-width: 32px;
        }
        .step-content h4 {
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: 4px;
        }
        .step-content p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin: 0;
        }
        .faq-block {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-thin);
            border-radius: var(--radius-md);
            overflow: hidden;
        }
        .faq-question {
            width: 100%;
            background: none;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 1rem;
            padding: 18px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            text-align: left;
            border: none;
            cursor: pointer;
            transition: background 0.2s;
        }
        .faq-question:hover { background: rgba(0,229,240,0.05); }
        .faq-answer {
            padding: 0 24px 18px;
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.7;
        }
        .cta-section {
            text-align: left;
            padding: 70px 0;
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-thin);
            border-bottom: 1px solid var(--border-thin);
        }
        .cta-inner {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            align-items: center;
            justify-content: space-between;
        }
        .cta-text h2 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.8rem;
            margin-bottom: 8px;
        }
        .cta-text p { color: var(--text-secondary); margin: 0; }
        .btn-cta {
            font-weight: 700;
            font-size: 1rem;
            padding: 14px 34px;
            border-radius: 50px;
            background: var(--gradient-gold);
            color: #0A0E14;
            box-shadow: var(--shadow-glow-gold);
        }
        .btn-cta:hover { transform: translateY(-2px); opacity: 0.9; }
        .site-footer {
            background: var(--bg-secondary);
            padding: 48px 0 28px;
            border-top: 1px solid var(--border-thin);
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-col h4 {
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: 14px;
            color: var(--text-primary);
        }
        .footer-col ul { list-style: none; padding: 0; }
        .footer-col ul li { margin-bottom: 8px; }
        .footer-col ul li a { color: var(--text-secondary); font-size: 0.9rem; }
        .footer-col ul li a:hover { color: var(--accent-cyan); }
        .footer-bottom {
            text-align: center;
            color: var(--text-muted);
            font-size: 0.8rem;
            padding-top: 20px;
            border-top: 1px solid var(--border-thin);
        }
        @media (max-width: 1024px) {
            .promo-grid { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
        }
        @media (max-width: 768px) {
            .nav-links { display: none; }
            .mobile-toggle { display: block; }
            .promo-grid { grid-template-columns: 1fr; }
            .cta-inner { flex-direction: column; text-align: center; }
            .steps-list li { flex-direction: column; gap: 8px; }
        }

/* roulang page: category4 */
:root {
            --bg-primary: #0A0E14;
            --bg-secondary: #0F141C;
            --bg-card: #16202B;
            --bg-elevated: #1B2A3A;
            --accent-cyan: #00E5F0;
            --accent-blue: #0077FF;
            --accent-blue-dark: #0052CC;
            --accent-pink: #FF007F;
            --gradient-hero: linear-gradient(135deg, #0A0E14 0%, #0F141C 40%, #16202B 100%);
            --gradient-card: linear-gradient(160deg, rgba(22,32,43,0.9) 0%, rgba(15,20,28,0.95) 100%);
            --gradient-btn: linear-gradient(135deg, #00E5F0 0%, #0077FF 100%);
            --gradient-btn-hover: linear-gradient(135deg, #00C4D4 0%, #0052CC 100%);
            --text-primary: #FFFFFF;
            --text-secondary: #A3B5C8;
            --text-muted: #6A7F94;
            --border-thin: rgba(0,229,240,0.18);
            --border-glow: rgba(0,229,240,0.45);
            --shadow-card: 0 8px 32px rgba(0,0,0,0.45);
            --shadow-glow-cyan: 0 0 18px rgba(0,229,240,0.35);
            --shadow-glow-pink: 0 0 14px rgba(255,0,127,0.3);
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --font-heading: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
            --font-body: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
        }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-body);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
        }
        a { text-decoration: none; color: inherit; transition: color 0.2s ease; }
        img { max-width: 100%; height: auto; display: block; }
        button, .btn-custom {
            font-family: var(--font-body);
            cursor: pointer;
            border: none;
            outline: none;
            transition: all 0.25s ease;
        }
        .container {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }
        /* NAVIGATION */
        .site-header {
            position: fixed;
            top: 0; left: 0; right: 0;
            z-index: 1050;
            background: rgba(10,14,20,0.82);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-thin);
            transition: background 0.3s ease;
        }
        .site-header.scrolled { background: rgba(10,14,20,0.95); }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .logo-brand {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.35rem;
            letter-spacing: -0.3px;
            background: var(--gradient-btn);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
        }
        .logo-brand span { font-weight: 400; }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            display: flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 50px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all 0.22s ease;
            white-space: nowrap;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--text-primary);
            background: rgba(0,229,240,0.1);
            box-shadow: inset 0 0 0 1px var(--border-glow);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn-login {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-primary);
            padding: 8px 18px;
            border-radius: 50px;
            background: transparent;
            border: 1px solid rgba(255,255,255,0.25);
        }
        .btn-login:hover { border-color: var(--accent-cyan); color: var(--accent-cyan); }
        .btn-signup {
            font-weight: 700;
            font-size: 0.9rem;
            color: #0A0E14;
            padding: 9px 22px;
            border-radius: 50px;
            background: var(--gradient-btn);
            box-shadow: var(--shadow-glow-cyan);
        }
        .btn-signup:hover {
            background: var(--gradient-btn-hover);
            box-shadow: 0 0 24px rgba(0,229,240,0.5);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            padding: 4px;
            cursor: pointer;
        }

        /* Page Hero */
        .page-hero {
            position: relative;
            padding: 120px 0 70px;
            background: var(--gradient-hero);
            overflow: hidden;
            border-bottom: 1px solid var(--border-thin);
        }
        .page-hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.jpg') center/cover no-repeat;
            opacity: 0.12;
            z-index: 0;
        }
        .page-hero-content {
            position: relative;
            z-index: 2;
            max-width: 780px;
            margin: 0 auto;
            text-align: left;
        }
        .page-hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0,229,240,0.1);
            border: 1px solid var(--border-glow);
            border-radius: 50px;
            padding: 6px 18px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent-cyan);
            margin-bottom: 20px;
        }
        .page-hero-title {
            font-family: var(--font-heading);
            font-size: clamp(2rem, 4vw, 2.8rem);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        .page-hero-title em {
            font-style: normal;
            background: var(--gradient-btn);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-hero-desc {
            font-size: 1.1rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 28px;
        }
        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
        }
        .btn-primary-hero {
            font-weight: 700;
            font-size: 1rem;
            padding: 14px 32px;
            border-radius: 50px;
            background: var(--gradient-btn);
            color: #0A0E14;
            box-shadow: var(--shadow-glow-cyan);
        }
        .btn-primary-hero:hover {
            background: var(--gradient-btn-hover);
            box-shadow: 0 0 28px rgba(0,229,240,0.55);
            transform: translateY(-2px);
        }
        .btn-outline-hero {
            font-weight: 600;
            font-size: 1rem;
            padding: 13px 30px;
            border-radius: 50px;
            border: 1.5px solid var(--border-glow);
            color: var(--accent-cyan);
            background: transparent;
        }
        .btn-outline-hero:hover {
            background: rgba(0,229,240,0.08);
            border-color: var(--accent-cyan);
        }

        /* Promotion Cards Multi-Column */
        .promo-section {
            padding: 70px 0;
        }
        .section-label {
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 1.5px;
            text-transform: uppercase;
            color: var(--accent-cyan);
            margin-bottom: 10px;
        }
        .section-title {
            font-family: var(--font-heading);
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .section-desc {
            color: var(--text-secondary);
            margin-bottom: 36px;
            font-size: 1rem;
            max-width: 680px;
        }
        .promo-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }
        .promo-card {
            background: var(--gradient-card);
            border: 1px solid var(--border-thin);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            position: relative;
            overflow: hidden;
            transition: all 0.3s ease;
        }
        .promo-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow-cyan);
            transform: translateY(-4px);
        }
        .promo-card-hot {
            position: absolute;
            top: 16px;
            right: 16px;
            background: var(--accent-pink);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 3px 10px;
            border-radius: 50px;
            letter-spacing: 0.5px;
            box-shadow: var(--shadow-glow-pink);
        }
        .promo-icon {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(0,229,240,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--accent-cyan);
            margin-bottom: 16px;
            border: 1px solid var(--border-glow);
        }
        .promo-card h3 {
            font-family: var(--font-heading);
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .promo-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.55;
            margin-bottom: 16px;
        }
        .promo-percent {
            font-size: 2rem;
            font-weight: 800;
            background: var(--gradient-btn);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .promo-link {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--accent-cyan);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap 0.2s;
        }
        .promo-link:hover { gap: 10px; color: #fff; }

        /* Steps / Eligibility */
        .steps-section {
            padding: 70px 0;
            background: var(--bg-secondary);
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 24px;
            margin-top: 30px;
        }
        .step-item {
            text-align: left;
            padding: 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-thin);
        }
        .step-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-pink);
            margin-bottom: 8px;
        }
        .step-item h4 {
            font-weight: 700;
            margin-bottom: 6px;
        }
        .step-item p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin: 0;
        }

        /* Feature Highlights */
        .feature-highlights {
            padding: 70px 0;
        }
        .feature-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            margin-top: 24px;
        }
        .feature-img-wrap {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-thin);
        }
        .feature-text h3 {
            font-family: var(--font-heading);
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 14px;
        }
        .feature-text p {
            color: var(--text-secondary);
            margin-bottom: 20px;
            line-height: 1.65;
        }
        .feature-list {
            list-style: none;
            padding: 0;
        }
        .feature-list li {
            padding: 6px 0;
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-secondary);
        }
        .feature-list i { color: var(--accent-cyan); }

        /* FAQ */
        .faq-section {
            padding: 70px 0;
            background: var(--bg-secondary);
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-thin);
            border-radius: var(--radius-md);
            padding: 22px 24px;
            margin-bottom: 14px;
            transition: border-color 0.2s;
        }
        .faq-item:hover { border-color: var(--border-glow); }
        .faq-item h4 {
            font-weight: 700;
            margin-bottom: 8px;
        }
        .faq-item p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin: 0;
            line-height: 1.55;
        }

        /* CTA */
        .cta-section {
            padding: 70px 0;
            text-align: left;
        }
        .cta-card {
            background: var(--gradient-card);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }
        .cta-card h3 {
            font-family: var(--font-heading);
            font-size: 1.7rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .cta-card p { color: var(--text-secondary); margin: 0; }

        /* Footer */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-thin);
            padding: 48px 0 24px;
            color: var(--text-secondary);
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-col h4 {
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            font-size: 1rem;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li { margin-bottom: 8px; }
        .footer-col ul li a { color: var(--text-secondary); }
        .footer-col ul li a:hover { color: var(--accent-cyan); }
        .footer-bottom {
            border-top: 1px solid var(--border-thin);
            padding-top: 20px;
            text-align: center;
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        /* FAB */
        .fab-float {
            position: fixed;
            left: 24px;
            bottom: 96px;
            z-index: 50;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--gradient-btn);
            color: #0A0E14;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            box-shadow: var(--shadow-glow-cyan);
            opacity: 0.85;
            transition: all 0.3s;
            cursor: pointer;
        }
        .fab-float:hover { opacity: 1; transform: scale(1.1); }

        @media (max-width: 1024px) {
            .feature-row { grid-template-columns: 1fr; gap: 30px; }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background: rgba(10,14,20,0.97);
                backdrop-filter: blur(14px);
                padding: 20px;
                border-bottom: 1px solid var(--border-thin);
            }
            .nav-links.show { display: flex; }
            .mobile-toggle { display: block; }
            .promo-grid { grid-template-columns: 1fr; }
            .cta-card { flex-direction: column; text-align: left; }
        }
        @media (max-width: 520px) {
            .page-hero-content { text-align: left; }
            .hero-cta-group { flex-direction: column; align-items: stretch; }
        }