/* roulang page: index */
:root {
  --primary-deep: #0A2E1C;
  --primary-forest: #123E25;
  --accent-gold: #FFD700;
  --accent-red: #D32F2F;
  --text-white: #FFFFFF;
  --text-mint: #D1F2EB;
  --border-gold-dim: rgba(255, 215, 0, 0.3);
  --shadow-gold: 0 8px 32px rgba(255, 215, 0, 0.15);
  --shadow-card: 0 4px 16px rgba(0, 0, 0, 0.25);
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 6px;
  --font-heading: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
  --font-body: 'Inter', 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--primary-deep);
  color: var(--text-white);
  line-height: 1.6;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent-gold);
  transition: color 0.2s ease;
}
a:hover {
  color: #FFEA70;
}
img {
  max-width: 100%;
  height: auto;
}

/* HEADER & NAV */
.site-header {
  background: rgba(10, 46, 28, 0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-gold-dim);
  position: sticky;
  top: 0;
  z-index: 50;
  padding: 0 1rem;
}
.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.logo {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent-gold);
  text-decoration: none;
  letter-spacing: -0.3px;
  white-space: nowrap;
}
.logo i {
  margin-right: 8px;
  color: var(--accent-red);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  color: var(--text-mint);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  padding: 0.4rem 0;
  border-bottom: 2px solid transparent;
  transition: all 0.2s ease;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--accent-gold);
  border-bottom-color: var(--accent-gold);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}
.btn-login {
  background: transparent;
  border: 1px solid var(--text-mint);
  color: var(--text-mint);
  padding: 0.45rem 1.1rem;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s;
}
.btn-login:hover {
  border-color: var(--accent-gold);
  color: var(--accent-gold);
  background: rgba(255,215,0,0.05);
}
.btn-signup {
  background: linear-gradient(135deg, var(--accent-gold), #E6B800);
  color: var(--primary-deep);
  padding: 0.45rem 1.2rem;
  border-radius: 6px;
  font-weight: 700;
  font-size: 0.9rem;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
}
.btn-signup:hover {
  background: linear-gradient(135deg, #FFEA70, #FFD700);
  box-shadow: 0 2px 12px rgba(255,215,0,0.35);
}
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--accent-gold);
  font-size: 1.6rem;
  cursor: pointer;
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(10, 46, 28, 0.98);
    backdrop-filter: blur(18px);
    padding: 1rem 1.5rem;
    gap: 1rem;
    border-bottom: 1px solid var(--border-gold-dim);
  }
  .nav-links.open {
    display: flex;
  }
  .mobile-toggle {
    display: block;
  }
  .header-actions .btn-login,
  .header-actions .btn-signup {
    padding: 0.35rem 0.8rem;
    font-size: 0.82rem;
  }
}

/* HERO */
.hero-section {
  background: linear-gradient(135deg, #0B2E1A 0%, #0A2E1C 50%, #0E3320 100%);
  padding: 3.5rem 1rem;
  position: relative;
  overflow: hidden;
}
.hero-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  opacity: 0.12;
  z-index: 0;
}
.hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: center;
}
.hero-text h1 {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--accent-gold);
  line-height: 1.25;
  margin-bottom: 1rem;
}
.hero-text .hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-mint);
  margin-bottom: 2rem;
  line-height: 1.7;
}
.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
}
.badge-item {
  background: rgba(255,215,0,0.1);
  border: 1px solid var(--border-gold-dim);
  border-radius: 999px;
  padding: 0.5rem 1.1rem;
  font-size: 0.9rem;
  color: var(--accent-gold);
  font-weight: 600;
}
.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent-gold), #E6B800);
  color: var(--primary-deep);
  font-weight: 700;
  padding: 0.8rem 2rem;
  border-radius: 999px;
  text-decoration: none;
  font-size: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.25s;
  border: none;
  cursor: pointer;
}
.btn-primary:hover {
  background: #FFEA70;
  box-shadow: 0 6px 20px rgba(255,215,0,0.4);
  transform: translateY(-2px);
}
.btn-outline-gold {
  background: transparent;
  border: 2px solid var(--accent-gold);
  color: var(--accent-gold);
  font-weight: 600;
  padding: 0.75rem 1.8rem;
  border-radius: 999px;
  text-decoration: none;
  font-size: 1rem;
  transition: all 0.25s;
}
.btn-outline-gold:hover {
  background: rgba(255,215,0,0.1);
  box-shadow: 0 4px 16px rgba(255,215,0,0.25);
}
.hero-visual {
  text-align: center;
}
.hero-visual img {
  max-width: 380px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-gold);
  border: 1px solid var(--border-gold-dim);
}

@media (max-width: 768px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-text h1 {
    font-size: 2rem;
  }
  .hero-badges {
    justify-content: center;
  }
  .hero-cta-group {
    justify-content: center;
  }
  .hero-visual img {
    max-width: 260px;
  }
}

/* SECTION BASE */
.section {
  padding: 3.5rem 1rem;
}
.section-alt {
  background: var(--primary-forest);
}
.section-container {
  max-width: 1200px;
  margin: 0 auto;
}
.section-title {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent-gold);
  margin-bottom: 0.6rem;
}
.section-desc {
  color: var(--text-mint);
  font-size: 1.05rem;
  margin-bottom: 2.5rem;
  max-width: 700px;
  line-height: 1.7;
}

/* MEMBERSHIP BENEFITS - 会员权益 */
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}
.benefit-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border-gold-dim);
  border-radius: var(--radius-md);
  padding: 1.8rem 1.5rem;
  transition: all 0.3s;
}
.benefit-card:hover {
  border-color: var(--accent-gold);
  box-shadow: var(--shadow-gold);
  transform: translateY(-3px);
}
.benefit-icon {
  font-size: 2.2rem;
  color: var(--accent-gold);
  margin-bottom: 1rem;
}
.benefit-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: #fff;
}
.benefit-card p {
  color: var(--text-mint);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* PRICE COMPARISON - 价格对比 */
.price-table {
  overflow-x: auto;
  margin-top: 1rem;
}
.price-table table {
  width: 100%;
  border-collapse: collapse;
  background: rgba(255,255,255,0.02);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.price-table th {
  background: var(--primary-forest);
  color: var(--accent-gold);
  padding: 1rem;
  font-weight: 700;
  text-align: left;
}
.price-table td {
  padding: 0.9rem 1rem;
  border-bottom: 1px solid rgba(255,215,0,0.1);
  color: var(--text-mint);
}
.price-table tr:last-child td {
  border-bottom: none;
}
.highlight-row {
  background: rgba(255,215,0,0.06);
  font-weight: 600;
  color: #fff !important;
}

/* NEWS / TIN TỨC */
.news-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 2rem;
}
.news-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.news-item {
  border-bottom: 1px solid rgba(255,215,0,0.15);
  padding: 1rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}
.news-item a {
  font-weight: 600;
  font-size: 1.05rem;
  color: #fff;
  text-decoration: none;
  transition: color 0.2s;
}
.news-item a:hover {
  color: var(--accent-gold);
}
.news-meta {
  font-size: 0.82rem;
  color: var(--text-mint);
}
.news-sidebar {
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--border-gold-dim);
  border-radius: var(--radius-md);
  padding: 1.5rem;
}
.news-sidebar h4 {
  color: var(--accent-gold);
  font-weight: 700;
  margin-bottom: 1rem;
}

@media (max-width: 768px) {
  .news-layout {
    grid-template-columns: 1fr;
  }
}

/* ENTRY MATRIX - 入口矩阵 */
.entry-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.2rem;
}
.entry-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border-gold-dim);
  border-radius: var(--radius-md);
  padding: 1.5rem 1rem;
  text-align: center;
  text-decoration: none;
  color: #fff;
  transition: all 0.3s;
}
.entry-card:hover {
  background: rgba(255,215,0,0.08);
  border-color: var(--accent-gold);
  transform: translateY(-2px);
}
.entry-card i {
  font-size: 2rem;
  color: var(--accent-gold);
  margin-bottom: 0.6rem;
}
.entry-card span {
  display: block;
  font-weight: 600;
  font-size: 0.95rem;
  margin-top: 0.3rem;
}

/* FOCUS THEMES - 焦点主题 */
.focus-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}
.focus-card {
  background-size: cover;
  background-position: center;
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  min-height: 200px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border-gold-dim);
}
.focus-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(10,46,28,0.85) 0%, rgba(10,46,28,0.2) 100%);
  z-index: 1;
}
.focus-card h3,
.focus-card p {
  position: relative;
  z-index: 2;
  color: #fff;
}
.focus-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.3rem;
}
.focus-card p {
  color: var(--text-mint);
  font-size: 0.9rem;
}

/* FAQ */
.faq-block {
  max-width: 800px;
}
.faq-item {
  border-bottom: 1px solid rgba(255,215,0,0.2);
  padding: 1.2rem 0;
}
.faq-question {
  font-weight: 700;
  font-size: 1.05rem;
  cursor: pointer;
  color: #fff;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq-answer {
  color: var(--text-mint);
  padding-top: 0.6rem;
  line-height: 1.7;
  display: none;
}
.faq-item.open .faq-answer {
  display: block;
}

/* CTA BAR */
.cta-bar {
  background: linear-gradient(135deg, var(--primary-forest), #0B2E1A);
  border-top: 1px solid var(--accent-gold);
  border-bottom: 1px solid var(--accent-gold);
  padding: 2rem 1rem;
  text-align: center;
}
.cta-bar h2 {
  color: var(--accent-gold);
  font-size: 1.7rem;
  margin-bottom: 0.8rem;
}
.cta-bar p {
  color: var(--text-mint);
  max-width: 600px;
  margin: 0 auto 1.5rem;
}

/* FLOATING CONVERSION BAR */
.float-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(10,46,28,0.96);
  backdrop-filter: blur(16px);
  border-top: 1px solid var(--accent-gold);
  padding: 0.8rem 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  z-index: 45;
  flex-wrap: wrap;
}
.float-cta span {
  color: var(--text-mint);
  font-weight: 500;
}

/* FAB */
.fab-left {
  position: fixed;
  left: 1rem;
  bottom: 6rem;
  z-index: 50;
  width: 56px;
  height: 56px;
  background: radial-gradient(circle at 30% 30%, #FFD700, #B8860B);
  border-radius: 50%;
  box-shadow: 0 4px 20px rgba(255,215,0,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  color: var(--primary-deep);
  cursor: pointer;
  animation: floatChip 3s ease-in-out infinite;
  transition: all 0.3s;
}
.fab-left:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 24px rgba(255,215,0,0.5);
}
@keyframes floatChip {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

/* FOOTER */
.site-footer {
  background: #051A10;
  padding: 2.5rem 1rem 1.5rem;
  border-top: 1px solid var(--border-gold-dim);
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
}
.footer-col h3 {
  color: var(--accent-gold);
  font-weight: 700;
  margin-bottom: 0.8rem;
}
.footer-col p, .footer-col a {
  color: var(--text-mint);
  font-size: 0.9rem;
  text-decoration: none;
  display: block;
  margin-bottom: 0.4rem;
}
.footer-col a:hover {
  color: #fff;
}
.footer-bottom {
  text-align: center;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,215,0,0.15);
  color: var(--text-mint);
  font-size: 0.85rem;
}
.footer-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(255,215,0,0.1);
  border: 1px solid var(--border-gold-dim);
  border-radius: 999px;
  padding: 0.3rem 0.9rem;
  font-size: 0.8rem;
  margin-left: 0.5rem;
}

/* roulang page: article */
:root {
            --bg-primary: #0F0C20;
            --bg-secondary: #0B1A30;
            --accent-lime: #CCFF00;
            --accent-cyan: #00F0FF;
            --text-white: #FFFFFF;
            --text-silver: #A6ACAF;
            --border-subtle: rgba(204, 255, 0, 0.15);
            --glow-cyan: rgba(0, 240, 255, 0.5);
            --glow-lime: rgba(204, 255, 0, 0.3);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-hover: 0 12px 40px rgba(0, 240, 255, 0.2);
            --transition-base: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --layer-nav: 1000;
            --layer-fab: 1100;
        }

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

        body {
            margin: 0;
            padding: 0;
            font-family: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-white);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

        button {
            cursor: pointer;
            border: none;
            outline: none;
            transition: var(--transition-base);
        }

        /* ============ HEADER & NAV ============ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: var(--layer-nav);
            background: rgba(15, 12, 32, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
            padding: 0 1.5rem;
            height: 72px;
            display: flex;
            align-items: center;
        }

        .header-inner {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 2rem;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--accent-lime);
            letter-spacing: -0.3px;
            white-space: nowrap;
        }

        .logo i {
            color: var(--accent-cyan);
            font-size: 1.4rem;
            filter: drop-shadow(0 0 8px var(--glow-cyan));
        }

        .nav-links {
            display: flex;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 2rem;
            align-items: center;
        }

        .nav-links a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-silver);
            position: relative;
            padding-bottom: 4px;
            transition: var(--transition-base);
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-lime);
            border-radius: 2px;
            transition: width 0.25s ease;
        }

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

        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .btn-login {
            background: transparent;
            color: var(--text-silver);
            font-size: 0.9rem;
            font-weight: 600;
            padding: 0.5rem 1.2rem;
            border-radius: 24px;
            transition: var(--transition-base);
        }

        .btn-login:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.05);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-lime), #a3e600);
            color: #0F0C20;
            font-size: 0.9rem;
            font-weight: 700;
            padding: 0.55rem 1.5rem;
            border-radius: 24px;
            box-shadow: 0 0 18px var(--glow-lime);
            letter-spacing: 0.2px;
        }

        .btn-signup:hover {
            box-shadow: 0 0 28px var(--glow-lime);
            transform: translateY(-1px);
        }

        .mobile-toggle {
            display: none;
            font-size: 1.6rem;
            background: transparent;
            color: var(--text-white);
            padding: 0.3rem;
        }

        /* ============ CONTAINER ============ */
        .page-container {
            max-width: 960px;
            margin: 0 auto;
            padding: 6rem 1.5rem 2rem;
        }

        /* ============ ARTICLE HERO ============ */
        .article-hero {
            background: linear-gradient(160deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
            border-radius: var(--radius-lg);
            padding: 3rem 2.5rem;
            margin-bottom: 2.5rem;
            border: 1px solid var(--border-subtle);
            box-shadow: var(--shadow-card);
            text-align: left;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 1.2rem;
            flex-wrap: wrap;
            margin-bottom: 1rem;
            font-size: 0.9rem;
            color: var(--text-silver);
        }

        .article-meta .category-tag {
            background: var(--accent-cyan);
            color: #0B1A30;
            font-weight: 700;
            padding: 0.25rem 0.9rem;
            border-radius: 20px;
            font-size: 0.8rem;
            letter-spacing: 0.3px;
        }

        .article-meta time {
            display: flex;
            align-items: center;
            gap: 0.35rem;
        }

        .article-meta time i {
            color: var(--accent-cyan);
            font-size: 0.8rem;
        }

        .article-hero h1 {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-white);
            margin-bottom: 0.75rem;
            letter-spacing: -0.5px;
        }

        .article-hero .excerpt {
            font-size: 1.1rem;
            color: var(--text-silver);
            line-height: 1.7;
        }

        /* ============ ARTICLE BODY ============ */
        .article-body {
            background: rgba(15, 12, 32, 0.7);
            border-radius: var(--radius-lg);
            padding: 2.5rem 2rem;
            border: 1px solid var(--border-subtle);
            box-shadow: var(--shadow-card);
            line-height: 1.75;
        }

        .article-body h2 {
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--accent-lime);
            margin-top: 2rem;
            margin-bottom: 1rem;
            letter-spacing: -0.3px;
        }

        .article-body h3 {
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--accent-cyan);
            margin-top: 1.5rem;
            margin-bottom: 0.75rem;
        }

        .article-body p {
            margin-bottom: 1.2rem;
            color: var(--text-silver);
        }

        .article-body strong {
            color: var(--text-white);
            font-weight: 700;
        }

        .article-body ul,
        .article-body ol {
            margin-bottom: 1.2rem;
            padding-left: 1.5rem;
        }

        .article-body li {
            margin-bottom: 0.5rem;
            color: var(--text-silver);
        }

        .article-body img {
            border-radius: var(--radius-md);
            margin: 1.5rem 0;
            box-shadow: var(--shadow-card);
        }

        .article-body a {
            color: var(--accent-lime);
            text-decoration: underline;
            font-weight: 600;
        }

        .article-body a:hover {
            color: var(--accent-cyan);
        }

        .not-found-message {
            text-align: left;
            padding: 3rem 2rem;
            color: var(--text-silver);
        }

        .not-found-message h2 {
            color: var(--accent-lime);
            font-size: 1.8rem;
            margin-bottom: 1rem;
        }

        .not-found-message a {
            display: inline-block;
            margin-top: 1.2rem;
            color: var(--accent-cyan);
            font-weight: 700;
            text-decoration: underline;
        }

        /* ============ REACTION BAR ============ */
        .reaction-bar {
            display: flex;
            align-items: center;
            justify-content: flex-start;
            gap: 1rem;
            margin-top: 2rem;
            padding: 1.2rem 0;
            border-top: 1px solid var(--border-subtle);
            flex-wrap: wrap;
        }

        .reaction-bar span {
            font-size: 0.95rem;
            color: var(--text-silver);
            font-weight: 500;
        }

        .btn-reaction {
            background: rgba(204, 255, 0, 0.08);
            color: var(--accent-lime);
            border: 1px solid var(--border-subtle);
            padding: 0.5rem 1.1rem;
            border-radius: 24px;
            font-size: 0.9rem;
            font-weight: 600;
            transition: var(--transition-base);
        }

        .btn-reaction:hover {
            background: var(--accent-lime);
            color: #0F0C20;
            box-shadow: 0 0 14px var(--glow-lime);
        }

        /* ============ CTA BOX ============ */
        .cta-inline {
            background: linear-gradient(135deg, var(--bg-secondary), #0F1A30);
            border-radius: var(--radius-lg);
            padding: 2.5rem 2rem;
            margin: 2.5rem 0;
            border: 1px solid var(--accent-lime);
            box-shadow: 0 0 24px rgba(204, 255, 0, 0.1);
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            gap: 1.2rem;
        }

        .cta-inline h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-white);
            margin: 0;
        }

        .cta-inline p {
            font-size: 1rem;
            color: var(--text-silver);
            margin: 0;
            max-width: 600px;
        }

        .cta-buttons {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .btn-appstore {
            background: var(--accent-lime);
            color: #0F0C20;
            font-weight: 700;
            padding: 0.75rem 2rem;
            border-radius: 30px;
            font-size: 1rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            box-shadow: 0 0 20px var(--glow-lime);
        }

        .btn-appstore:hover {
            box-shadow: 0 0 32px var(--glow-lime);
            transform: translateY(-2px);
        }

        .btn-googleplay {
            background: transparent;
            border: 2px solid var(--accent-cyan);
            color: var(--accent-cyan);
            font-weight: 700;
            padding: 0.75rem 2rem;
            border-radius: 30px;
            font-size: 1rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.15);
        }

        .btn-googleplay:hover {
            background: var(--accent-cyan);
            color: #0B1A30;
            box-shadow: 0 0 28px var(--glow-cyan);
        }

        /* ============ FAB ============ */
        .floating-fab {
            position: fixed;
            left: 1.2rem;
            bottom: 2rem;
            z-index: var(--layer-fab);
            width: 56px;
            height: 56px;
            border-radius: 36px;
            background: rgba(0, 0, 0, 0.65);
            backdrop-filter: blur(12px);
            border: 2px solid var(--accent-lime);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-lime);
            font-size: 1.5rem;
            box-shadow: 0 0 18px var(--glow-lime);
            transition: var(--transition-base);
            cursor: pointer;
            animation: fabPulse 2.4s infinite ease-in-out;
        }

        @keyframes fabPulse {
            0%, 100% { box-shadow: 0 0 18px var(--glow-lime); }
            50% { box-shadow: 0 0 32px rgba(204, 255, 0, 0.7); }
        }

        .floating-fab:hover {
            background: var(--accent-lime);
            color: #0F0C20;
            transform: scale(1.12);
            box-shadow: 0 0 36px var(--glow-lime);
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: rgba(11, 26, 48, 0.9);
            border-top: 1px solid var(--border-subtle);
            padding: 3rem 1.5rem 1.5rem;
            margin-top: 3rem;
        }

        .footer-inner {
            max-width: 1280px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2rem;
            align-items: start;
        }

        .footer-col h3 {
            color: var(--accent-lime);
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }

        .footer-col p {
            color: var(--text-silver);
            font-size: 0.9rem;
            line-height: 1.6;
        }

        .footer-col a {
            display: block;
            color: var(--text-silver);
            font-size: 0.9rem;
            padding: 0.3rem 0;
            transition: var(--transition-base);
        }

        .footer-col a:hover {
            color: var(--accent-cyan);
            padding-left: 4px;
        }

        .footer-bottom {
            max-width: 1280px;
            margin: 2rem auto 0;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border-subtle);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
            font-size: 0.85rem;
            color: var(--text-silver);
        }

        .footer-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            color: var(--accent-lime);
            font-weight: 600;
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .page-container {
                padding: 5.5rem 1.2rem 1.5rem;
            }
            .article-hero h1 {
                font-size: 2rem;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                padding: 0 1rem;
                height: 64px;
            }
            .nav-links {
                position: fixed;
                top: 64px;
                left: 0;
                width: 100%;
                background: rgba(15, 12, 32, 0.97);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 1.5rem;
                gap: 1.2rem;
                display: none;
                border-bottom: 1px solid var(--border-subtle);
            }
            .nav-links.open {
                display: flex;
            }
            .mobile-toggle {
                display: block;
            }
            .header-actions {
                gap: 0.5rem;
            }
            .header-actions .btn-login,
            .header-actions .btn-signup {
                padding: 0.4rem 1rem;
                font-size: 0.8rem;
            }
            .article-hero {
                padding: 2rem 1.5rem;
            }
            .article-hero h1 {
                font-size: 1.7rem;
            }
            .article-body {
                padding: 1.5rem 1.2rem;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                text-align: left;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: left;
            }
        }

        @media (max-width: 520px) {
            .logo {
                font-size: 1rem;
            }
            .header-actions .btn-login {
                display: inline-block;
            }
            .header-actions .btn-signup {
                display: inline-block;
            }
            .article-hero {
                padding: 1.5rem 1rem;
                border-radius: var(--radius-md);
            }
            .article-hero h1 {
                font-size: 1.4rem;
            }
            .article-meta {
                gap: 0.6rem;
                font-size: 0.8rem;
            }
            .article-body {
                padding: 1.2rem 1rem;
                border-radius: var(--radius-md);
            }
            .cta-inline {
                padding: 1.8rem 1.2rem;
            }
            .cta-inline h2 {
                font-size: 1.4rem;
            }
            .btn-appstore,
            .btn-googleplay {
                padding: 0.65rem 1.4rem;
                font-size: 0.9rem;
            }
        }

/* roulang page: category1 */
:root {
            --bg-deep: #0A2E1C;
            --bg-forest: #123E25;
            --gold: #FFD700;
            --gold-dark: #C5A059;
            --red: #D32F2F;
            --white: #FFFFFF;
            --mint: #D1F2EB;
            --text-body: #E0E0E0;
            --text-weak: #A6ACAF;
            --border-gold: #FFD700;
            --shadow-gold: 0 4px 20px rgba(255, 215, 0, 0.3);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --font-head: 'Segoe UI', 'Roboto', system-ui, sans-serif;
            --font-body: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
        }

        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { font-size: 16px; scroll-behavior: smooth; }
        body {
            font-family: var(--font-body);
            background: var(--bg-deep);
            color: var(--white);
            line-height: 1.6;
            overflow-x: hidden;
            min-height: 100vh;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { text-decoration: none; color: inherit; transition: all 0.25s ease; }
        ul { list-style: none; }
        button { cursor: pointer; font-family: inherit; border: none; outline: none; transition: all 0.25s ease; }
        h1, h2, h3, h4, h5, h6 { font-family: var(--font-head); line-height: 1.3; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

        /* Header / Navigation */
        .site-header {
            background: linear-gradient(180deg, rgba(10,46,28,0.98) 0%, rgba(18,62,37,0.96) 100%);
            backdrop-filter: blur(10px);
            position: sticky;
            top: 0;
            z-index: 100;
            border-bottom: 1px solid rgba(255,215,0,0.25);
        }
        .header-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 12px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--gold);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .logo i { font-size: 1.5rem; color: var(--gold); }
        .nav-links {
            display: flex;
            gap: 28px;
            align-items: center;
        }
        .nav-links a {
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--mint);
            padding: 6px 12px;
            border-radius: 20px;
            position: relative;
        }
        .nav-links a.active,
        .nav-links a:hover {
            color: var(--gold);
            background: rgba(255,215,0,0.08);
        }
        .header-actions {
            display: flex;
            gap: 10px;
            align-items: center;
        }
        .btn-login {
            background: transparent;
            color: var(--mint);
            border: 1px solid rgba(255,215,0,0.4);
            padding: 8px 20px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.9rem;
        }
        .btn-login:hover { background: rgba(255,215,0,0.1); color: var(--gold); }
        .btn-signup {
            background: var(--gold);
            color: var(--bg-deep);
            padding: 8px 22px;
            border-radius: 24px;
            font-weight: 700;
            font-size: 0.9rem;
        }
        .btn-signup:hover { background: #FFE55C; transform: translateY(-2px); box-shadow: var(--shadow-gold); }
        .mobile-toggle {
            display: none;
            background: transparent;
            color: var(--gold);
            font-size: 1.8rem;
            padding: 4px 10px;
            border-radius: 8px;
        }

        /* Hero Section */
        .hero-section {
            position: relative;
            background: linear-gradient(135deg, #0A2E1C 0%, #123E25 50%, #0A2E1C 100%);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            padding: 80px 0 70px;
            text-align: left;
            border-bottom: 2px solid var(--border-gold);
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 30% 50%, rgba(255,215,0,0.12) 0%, transparent 60%);
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .hero-timer-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--red);
            color: white;
            padding: 8px 18px;
            border-radius: 24px;
            font-weight: 700;
            font-size: 0.9rem;
            margin-bottom: 20px;
        }
        .hero-timer-badge i { color: #FFD700; }
        .hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--gold);
            margin-bottom: 15px;
            line-height: 1.2;
            max-width: 750px;
        }
        .hero-sub {
            font-size: 1.15rem;
            color: var(--mint);
            margin-bottom: 30px;
            max-width: 650px;
            line-height: 1.6;
        }
        .hero-actions {
            display: flex;
            gap: 15px;
            flex-wrap: wrap;
        }
        .btn-hero {
            padding: 14px 36px;
            border-radius: 28px;
            font-weight: 700;
            font-size: 1rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-hero-primary {
            background: var(--gold);
            color: var(--bg-deep);
        }
        .btn-hero-primary:hover { background: #FFE55C; box-shadow: var(--shadow-gold); transform: translateY(-2px); }
        .btn-hero-outline {
            background: transparent;
            border: 2px solid var(--gold);
            color: var(--gold);
        }
        .btn-hero-outline:hover { background: rgba(255,215,0,0.1); }

        /* Data Dashboard */
        .dashboard-strip {
            background: rgba(18,62,37,0.7);
            backdrop-filter: blur(5px);
            padding: 25px 0;
            border-bottom: 1px solid rgba(255,215,0,0.2);
        }
        .dashboard-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 30px;
            justify-content: space-around;
            text-align: center;
        }
        .stat-item h3 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--gold);
        }
        .stat-item p { color: var(--mint); font-size: 0.9rem; margin-top: 4px; }

        /* Process / Steps */
        .section-padding { padding: 70px 0; }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 10px;
            text-align: left;
        }
        .section-lead {
            color: var(--text-weak);
            font-size: 1.05rem;
            margin-bottom: 40px;
            text-align: left;
            max-width: 700px;
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 25px;
        }
        .step-card {
            background: rgba(255,255,255,0.04);
            border: 1px solid rgba(255,215,0,0.2);
            border-radius: var(--radius-md);
            padding: 25px 20px;
            text-align: left;
            transition: all 0.3s ease;
        }
        .step-card:hover {
            border-color: var(--gold);
            box-shadow: 0 8px 25px rgba(255,215,0,0.15);
        }
        .step-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--gold);
            opacity: 0.7;
            margin-bottom: 10px;
        }
        .step-card h3 { font-size: 1.25rem; margin-bottom: 8px; color: var(--white); }
        .step-card p { color: var(--text-body); font-size: 0.95rem; }

        /* Comparison / Table */
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            background: rgba(255,255,255,0.02);
            border-radius: var(--radius-md);
            overflow: hidden;
        }
        .compare-table th {
            background: rgba(255,215,0,0.1);
            color: var(--gold);
            padding: 14px 18px;
            text-align: left;
            font-weight: 700;
        }
        .compare-table td {
            padding: 14px 18px;
            border-bottom: 1px solid rgba(255,255,255,0.06);
            color: var(--text-body);
        }
        .compare-table tr:last-child td { border-bottom: none; }

        /* FAQ Accordion */
        .faq-list { margin-top: 20px; }
        .faq-item {
            border-bottom: 1px solid rgba(255,215,0,0.15);
            padding: 18px 0;
            cursor: pointer;
        }
        .faq-question {
            font-weight: 700;
            font-size: 1.1rem;
            display: flex;
            justify-content: space-between;
            color: var(--mint);
        }
        .faq-question i { color: var(--gold); transition: transform 0.25s; }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
            color: var(--text-body);
            margin-top: 0;
        }
        .faq-item.open .faq-answer { max-height: 300px; margin-top: 12px; }
        .faq-item.open .faq-question i { transform: rotate(180deg); }

        /* CTA Panel */
        .cta-block {
            background: linear-gradient(135deg, rgba(255,215,0,0.08) 0%, rgba(211,47,47,0.08) 100%);
            border-radius: var(--radius-lg);
            padding: 50px 30px;
            text-align: left;
            border: 1px solid rgba(255,215,0,0.25);
        }
        .cta-block h2 { color: var(--gold); margin-bottom: 15px; }

        /* Footer */
        .site-footer {
            background: #071f13;
            border-top: 2px solid var(--gold);
            padding: 40px 0 20px;
            margin-top: 40px;
        }
        .footer-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 30px;
        }
        .footer-col h3 { color: var(--gold); margin-bottom: 15px; font-size: 1.1rem; }
        .footer-col p, .footer-col a { color: var(--text-weak); font-size: 0.9rem; display: block; margin-bottom: 8px; }
        .footer-col a:hover { color: var(--gold); }
        .footer-bottom {
            max-width: 1200px;
            margin: 25px auto 0;
            padding: 15px 20px 0;
            border-top: 1px solid rgba(255,255,255,0.08);
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            justify-content: space-between;
            color: var(--text-weak);
            font-size: 0.85rem;
        }
        .footer-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255,215,0,0.1);
            padding: 5px 14px;
            border-radius: 20px;
            color: var(--gold);
        }

        /* FAB */
        .fab-left {
            position: fixed;
            left: 20px;
            bottom: 100px;
            z-index: 90;
            background: rgba(10,46,28,0.9);
            border: 2px solid var(--gold);
            border-radius: 50%;
            width: 56px;
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--gold);
            font-size: 1.5rem;
            box-shadow: 0 4px 25px rgba(255,215,0,0.3);
            opacity: 0.8;
            transition: all 0.3s;
        }
        .fab-left:hover { opacity: 1; transform: scale(1.1); box-shadow: 0 6px 30px rgba(255,215,0,0.5); }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-title { font-size: 2.2rem; }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                background: var(--bg-deep);
                padding: 10px 0;
                gap: 10px;
            }
            .nav-links.open { display: flex; }
            .mobile-toggle { display: block; }
            .header-actions { margin-left: auto; }
            .hero-title { font-size: 1.8rem; }
            .dashboard-grid { gap: 15px; }
        }
        @media (max-width: 520px) {
            .header-inner { padding: 10px; }
            .btn-login, .btn-signup { padding: 6px 14px; font-size: 0.8rem; }
            .hero-section { padding: 50px 0; }
        }

/* roulang page: category2 */
:root {
            --primary-bg: #121212;
            --secondary-bg: #1C1C1E;
            --surface: #242426;
            --accent-gold: #C5A059;
            --accent-amber: #FFBF00;
            --text-primary: #F5F5F7;
            --text-secondary: #D4AC0D;
            --text-muted: #A6A0A0;
            --border-dim: #3A3A3C;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.4);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.6);
            --shadow-gold: 0 4px 20px rgba(197, 160, 89, 0.25);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --transition: all 0.25s ease;
        }

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

        body {
            font-family: 'Segoe UI', Roboto, 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            background-color: var(--primary-bg);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a {
            text-decoration: none;
            color: inherit;
        }

        button {
            cursor: pointer;
            font-family: inherit;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ----- HEADER (Shared) ----- */
        .site-header {
            background: rgba(18,18,18,0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-dim);
            position: sticky;
            top: 0;
            z-index: 40;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            flex-wrap: wrap;
        }
        .logo {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--accent-amber);
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: -0.3px;
        }
        .logo i {
            color: var(--accent-gold);
            font-size: 1.8rem;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 28px;
            align-items: center;
        }
        .nav-links a {
            font-weight: 500;
            color: var(--text-muted);
            padding: 8px 0;
            border-bottom: 2px solid transparent;
            transition: var(--transition);
            font-size: 0.95rem;
        }
        .nav-links a.active,
        .nav-links a:hover {
            color: var(--accent-amber);
            border-bottom-color: var(--accent-amber);
        }
        .header-actions {
            display: flex;
            gap: 12px;
            align-items: center;
        }
        .btn-login {
            background: transparent;
            border: 1px solid var(--accent-gold);
            color: var(--accent-amber);
            padding: 10px 22px;
            border-radius: 30px;
            font-weight: 600;
            transition: var(--transition);
        }
        .btn-login:hover {
            background: rgba(197,160,89,0.1);
        }
        .btn-signup {
            background: linear-gradient(135deg, var(--accent-gold), #D4A02C);
            border: none;
            color: #121212;
            padding: 10px 26px;
            border-radius: 30px;
            font-weight: 700;
            box-shadow: var(--shadow-gold);
            transition: var(--transition);
        }
        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255,191,0,0.35);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
        }

        /* ----- HERO (Báo cáo tải xuống / Whitepaper style) ----- */
        .hero-guide {
            background: linear-gradient(135deg, #1A1510 0%, #18140C 40%, #121212 100%);
            padding: 60px 0 70px;
            border-bottom: 1px solid #3A362A;
        }
        .hero-guide .grid-x {
            align-items: center;
        }
        .hero-content h1 {
            font-size: 2.6rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.3;
            margin-bottom: 20px;
        }
        .hero-content h1 span {
            color: var(--accent-amber);
        }
        .hero-summary {
            font-size: 1.1rem;
            color: var(--text-muted);
            margin-bottom: 28px;
            border-left: 4px solid var(--accent-amber);
            padding-left: 20px;
        }
        .hero-stats {
            display: flex;
            gap: 28px;
            margin-bottom: 28px;
        }
        .stat-item {
            background: rgba(36,36,38,0.7);
            padding: 12px 18px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-dim);
        }
        .stat-number {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--accent-amber);
        }
        .stat-label {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .hero-cover {
            background: var(--surface);
            border-radius: var(--radius-md);
            padding: 16px;
            box-shadow: var(--shadow-md);
            border: 1px solid #3A362A;
            text-align: center;
        }
        .hero-cover img {
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
        }
        .download-badge {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .badge-store {
            background: #1C1C1E;
            border: 1px solid var(--accent-gold);
            padding: 10px 24px;
            border-radius: 30px;
            color: var(--accent-amber);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        .badge-store:hover {
            background: var(--accent-gold);
            color: #121212;
        }

        /* ----- QUY TRÌNH (Steps) ----- */
        .steps-section {
            padding: 70px 0;
            background: var(--secondary-bg);
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--text-primary);
        }
        .section-sub {
            color: var(--text-muted);
            margin-bottom: 48px;
            font-size: 1.05rem;
        }
        .step-card {
            background: var(--surface);
            border-radius: var(--radius-md);
            padding: 30px 22px;
            border: 1px solid transparent;
            transition: var(--transition);
            height: 100%;
            position: relative;
        }
        .step-card:hover {
            border-color: var(--accent-gold);
            box-shadow: var(--shadow-gold);
        }
        .step-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--accent-amber);
            opacity: 0.5;
        }
        .step-card h3 {
            font-size: 1.3rem;
            margin: 12px 0 10px;
        }
        .step-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* ----- COMPARISON TABLE (So sánh) ----- */
        .compare-section {
            padding: 70px 0;
            background: var(--primary-bg);
        }
        .compare-table {
            background: var(--surface);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-dim);
        }
        .compare-table .table-header {
            background: #2A281E;
            color: var(--accent-amber);
            font-weight: 700;
        }
        .compare-table td, .compare-table th {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border-dim);
            color: var(--text-primary);
        }
        .compare-table tr:last-child td {
            border-bottom: none;
        }
        .highlight-col {
            background: rgba(197,160,89,0.05);
        }

        /* ----- FAQ ----- */
        .faq-section {
            padding: 70px 0;
            background: var(--secondary-bg);
        }
        .faq-item {
            background: var(--surface);
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
            border: 1px solid var(--border-dim);
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            text-align: left;
            padding: 20px 24px;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text-primary);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-muted);
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        /* ----- CTA Download ----- */
        .cta-download {
            padding: 70px 0;
            background: linear-gradient(145deg, #1E1B12, #121212);
            text-align: center;
            border-top: 1px solid #3A362A;
        }
        .cta-box {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 44px 28px;
            border: 1px solid var(--accent-gold);
            box-shadow: var(--shadow-gold);
            max-width: 700px;
            margin: 0 auto;
        }
        .btn-download-large {
            background: var(--accent-amber);
            color: #121212;
            padding: 16px 40px;
            border-radius: 40px;
            font-weight: 800;
            font-size: 1.1rem;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            margin-top: 20px;
            transition: var(--transition);
        }
        .btn-download-large:hover {
            background: #FFD700;
            transform: scale(1.03);
        }

        /* ----- FOOTER (Shared) ----- */
        .site-footer {
            background: #0C0C0C;
            border-top: 1px solid var(--border-dim);
            padding: 50px 0 20px;
            color: var(--text-muted);
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 30px;
        }
        .footer-col h3 {
            color: var(--accent-amber);
            margin-bottom: 14px;
        }
        .footer-col a {
            display: block;
            margin-bottom: 8px;
            color: #B0AFAF;
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            border-top: 1px solid #2A2A2A;
            padding-top: 20px;
            font-size: 0.9rem;
        }
        .footer-badge i {
            color: var(--accent-amber);
        }

        @media (max-width: 1024px) {
            .hero-content h1 { font-size: 2rem; }
            .nav-links { gap: 20px; }
        }
        @media (max-width: 768px) {
            .mobile-toggle { display: block; }
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #1C1C1E;
                padding: 16px;
                border-radius: var(--radius-sm);
                margin-top: 10px;
                gap: 12px;
            }
            .nav-links.open { display: flex; }
            .header-actions { gap: 8px; }
            .btn-login, .btn-signup { padding: 8px 18px; font-size: 0.9rem; }
            .footer-inner { grid-template-columns: 1fr; }
            .hero-stats { flex-wrap: wrap; }
        }