/* roulang page: index */
/* ===== Design Variables ===== */
:root {
  --primary: #0c2340;
  --primary-light: #1a3a5c;
  --primary-dark: #07172b;
  --secondary: #d4a843;
  --secondary-light: #e8c46a;
  --secondary-dark: #b8922e;
  --bg: #ffffff;
  --bg-alt: #f5f7fa;
  --bg-card: #ffffff;
  --bg-dark: #0c2340;
  --text: #1a202c;
  --text-light: #64748b;
  --text-white: #ffffff;
  --text-muted: #94a3b8;
  --border: #e2e8f0;
  --border-light: #f1f5f9;
  --radius: 16px;
  --radius-sm: 8px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-full: 50px;
  --shadow: 0 4px 24px rgba(12, 35, 64, 0.08);
  --shadow-lg: 0 12px 40px rgba(12, 35, 64, 0.12);
  --shadow-sm: 0 2px 12px rgba(12, 35, 64, 0.05);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --container: 1200px;
  --nav-height: 72px;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; transition: var(--transition); }
img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
button, input, textarea { font-family: inherit; font-size: inherit; border: none; outline: none; transition: var(--transition); }
button { cursor: pointer; background: none; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.3; color: var(--text); font-weight: 700; }
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
h3 { font-size: clamp(1.15rem, 2vw, 1.5rem); }
h4 { font-size: 1.15rem; }
p { margin-bottom: 0.5rem; color: var(--text-light); }
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-alt { background: var(--bg-alt); }
.section-dark { background: var(--bg-dark); color: var(--text-white); }
.text-center { text-align: center; }
.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--secondary);
  background: rgba(212, 168, 67, 0.1);
  padding: 6px 18px;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
}
.section-title { margin-bottom: 12px; }
.section-desc { max-width: 640px; margin: 0 auto 48px; font-size: 1.05rem; color: var(--text-light); }
.section-dark .section-desc { color: rgba(255,255,255,0.7); }
.section-dark .section-title { color: var(--text-white); }

/* ===== Navigation ===== */
.header {
  position: fixed;
  top: 16px;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  justify-content: center;
  pointer-events: none;
}
.header .container {
  pointer-events: auto;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-radius: var(--radius-full);
  box-shadow: 0 4px 30px rgba(12, 35, 64, 0.1);
  border: 1px solid rgba(255,255,255,0.4);
  padding: 0 20px;
  max-width: 1100px;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 10px;
  letter-spacing: -0.02em;
}
.logo i { color: var(--secondary); font-size: 1.5rem; }
.nav-list { display: flex; align-items: center; gap: 6px; }
.nav-list a {
  padding: 10px 20px;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-light);
  transition: var(--transition);
  white-space: nowrap;
}
.nav-list a:hover { color: var(--primary); background: rgba(12, 35, 64, 0.06); }
.nav-list a.active { color: var(--text-white); background: var(--primary); }
.nav-cta {
  background: var(--secondary) !important;
  color: var(--primary-dark) !important;
  font-weight: 600 !important;
  padding: 10px 24px !important;
  border-radius: var(--radius-full) !important;
}
.nav-cta:hover { background: var(--secondary-light) !important; transform: translateY(-1px); }
.menu-toggle { display: none; font-size: 1.4rem; color: var(--primary); padding: 8px; cursor: pointer; }

/* ===== Hero ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  background: linear-gradient(135deg, rgba(12, 35, 64, 0.85), rgba(26, 58, 92, 0.75)), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  padding-top: calc(var(--nav-height) + 40px);
  overflow: hidden;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 120px;
  background: linear-gradient(to top, var(--bg), transparent);
  pointer-events: none;
}
.hero-content { position: relative; z-index: 2; max-width: 780px; padding: 40px 0 80px; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(212, 168, 67, 0.2);
  border: 1px solid rgba(212, 168, 67, 0.3);
  color: var(--secondary-light);
  padding: 8px 20px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 24px;
  backdrop-filter: blur(4px);
}
.hero-title { color: var(--text-white); margin-bottom: 16px; line-height: 1.15; }
.hero-title span { color: var(--secondary-light); }
.hero-desc { font-size: clamp(1rem, 2vw, 1.2rem); color: rgba(255,255,255,0.8); margin-bottom: 36px; max-width: 600px; line-height: 1.8; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
  border: 2px solid transparent;
}
.btn-primary { background: var(--secondary); color: var(--primary-dark); }
.btn-primary:hover { background: var(--secondary-light); transform: translateY(-2px); box-shadow: 0 8px 30px rgba(212, 168, 67, 0.35); }
.btn-outline { border-color: rgba(255,255,255,0.3); color: var(--text-white); background: transparent; }
.btn-outline:hover { border-color: var(--secondary); color: var(--secondary); background: rgba(212, 168, 67, 0.08); transform: translateY(-2px); }
.btn-sm { padding: 10px 22px; font-size: 0.85rem; }

/* ===== Features / Cards ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-top: 20px;
}
.feature-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 36px 28px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-light);
  transition: var(--transition);
  text-align: center;
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.feature-icon {
  width: 64px; height: 64px;
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 20px;
  font-size: 1.6rem;
  background: var(--bg-alt);
  color: var(--primary);
  transition: var(--transition);
}
.feature-card:hover .feature-icon { background: var(--secondary); color: var(--primary-dark); }
.feature-card h3 { margin-bottom: 10px; }
.feature-card p { font-size: 0.9rem; margin-bottom: 0; }

/* ===== Cover Cards ===== */
.cover-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.cover-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}
.cover-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.cover-card img { width: 100%; height: 200px; object-fit: cover; border-radius: 0; }
.cover-card-body { padding: 22px 24px 26px; }
.cover-card-body h3 { margin-bottom: 8px; font-size: 1.1rem; }
.cover-card-body p { font-size: 0.9rem; margin-bottom: 14px; }
.cover-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--secondary-dark);
  background: rgba(212, 168, 67, 0.1);
  padding: 4px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 10px;
}
.cover-link { color: var(--primary); font-weight: 600; font-size: 0.9rem; display: inline-flex; align-items: center; gap: 6px; }
.cover-link:hover { color: var(--secondary); gap: 10px; }

/* ===== Latest Posts (CMS) ===== */
.post-list { display: grid; grid-template-columns: 1fr; gap: 20px; max-width: 900px; margin: 0 auto; }
.post-item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px 28px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}
.post-item:hover { box-shadow: var(--shadow); transform: translateX(4px); }
.post-cat {
  flex-shrink: 0;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-white);
  background: var(--primary);
  padding: 4px 16px;
  border-radius: var(--radius-full);
  margin-top: 2px;
}
.post-info { flex: 1; }
.post-info h3 { font-size: 1.05rem; margin-bottom: 6px; }
.post-info h3 a { color: var(--text); }
.post-info h3 a:hover { color: var(--secondary); }
.post-info p { font-size: 0.9rem; margin-bottom: 8px; color: var(--text-light); }
.post-meta { font-size: 0.8rem; color: var(--text-muted); display: flex; gap: 16px; align-items: center; }
.post-meta i { margin-right: 4px; }
.post-empty {
  text-align: center;
  padding: 48px 24px;
  background: var(--bg-alt);
  border-radius: var(--radius);
  color: var(--text-light);
  font-size: 1rem;
}

/* ===== Stats ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  text-align: center;
}
.stat-item { padding: 20px; }
.stat-number { font-size: clamp(2rem, 4vw, 3rem); font-weight: 800; color: var(--secondary-light); line-height: 1.2; margin-bottom: 6px; }
.stat-label { font-size: 0.95rem; color: rgba(255,255,255,0.75); font-weight: 500; }
.stat-item i { font-size: 1.8rem; color: var(--secondary); margin-bottom: 12px; display: block; }

/* ===== Process ===== */
.process-steps { display: flex; flex-wrap: wrap; gap: 30px; justify-content: center; counter-reset: step; }
.process-step {
  flex: 1;
  min-width: 200px;
  max-width: 260px;
  text-align: center;
  padding: 32px 20px;
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  position: relative;
  transition: var(--transition);
  counter-increment: step;
}
.process-step:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.process-step::before {
  content: counter(step);
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--secondary);
  color: var(--primary-dark);
  font-weight: 700;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 3px solid var(--bg);
}
.process-step i { font-size: 2rem; color: var(--primary); margin-bottom: 16px; margin-top: 8px; display: block; }
.process-step h4 { margin-bottom: 8px; font-size: 1rem; }
.process-step p { font-size: 0.85rem; margin-bottom: 0; }

/* ===== FAQ ===== */
.faq-list { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border-light);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: var(--border); }
.faq-question {
  padding: 20px 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-weight: 600;
  font-size: 1rem;
  color: var(--text);
  gap: 16px;
  user-select: none;
}
.faq-question i { color: var(--secondary); transition: var(--transition); font-size: 0.9rem; }
.faq-item.active .faq-question i { transform: rotate(180deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  padding: 0 28px;
  font-size: 0.92rem;
  color: var(--text-light);
  line-height: 1.8;
}
.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 28px 24px;
}

/* ===== CTA ===== */
.cta-section {
  background: linear-gradient(135deg, var(--primary), var(--primary-light)), url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  padding: 80px 0;
  text-align: center;
  position: relative;
}
.cta-section h2 { color: var(--text-white); margin-bottom: 16px; }
.cta-section p { color: rgba(255,255,255,0.75); margin-bottom: 32px; max-width: 560px; margin-left: auto; margin-right: auto; }
.cta-section .btn-primary { font-size: 1rem; padding: 16px 40px; }

/* ===== Footer ===== */
.footer {
  background: var(--primary-dark);
  color: rgba(255,255,255,0.7);
  padding: 60px 0 30px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .logo { color: var(--text-white); margin-bottom: 16px; }
.footer-brand p { font-size: 0.9rem; color: rgba(255,255,255,0.55); max-width: 320px; }
.footer h4 { color: var(--text-white); font-size: 0.9rem; margin-bottom: 18px; text-transform: uppercase; letter-spacing: 0.05em; }
.footer a { display: block; font-size: 0.9rem; color: rgba(255,255,255,0.55); margin-bottom: 10px; }
.footer a:hover { color: var(--secondary-light); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.4);
}
.footer-social { display: flex; gap: 14px; }
.footer-social a { width: 40px; height: 40px; border-radius: 50%; background: rgba(255,255,255,0.06); display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,0.5); font-size: 1rem; margin-bottom: 0; }
.footer-social a:hover { background: var(--secondary); color: var(--primary-dark); padding-left: 0; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .feature-grid, .cover-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .header { top: 12px; }
  .header .container { padding: 0 16px; height: 62px; }
  .nav-list { display: none; }
  .menu-toggle { display: block; }
  .nav-list.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: calc(100% + 8px);
    left: 8px; right: 8px;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(18px);
    border-radius: var(--radius);
    padding: 12px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-light);
    gap: 4px;
  }
  .nav-list.open a { width: 100%; text-align: center; padding: 12px 20px; }
  .hero { min-height: 90vh; padding-top: 80px; }
  .hero-content { padding: 20px 0 60px; }
  .feature-grid, .cover-grid { grid-template-columns: 1fr; }
  .post-item { flex-direction: column; gap: 12px; padding: 20px; }
  .post-cat { align-self: flex-start; }
  .process-steps { flex-direction: column; align-items: center; }
  .process-step { max-width: 100%; width: 100%; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .section { padding: 56px 0; }
  .cta-section { padding: 56px 0; }
}
@media (max-width: 520px) {
  .header .container { height: 56px; padding: 0 12px; }
  .logo { font-size: 1.1rem; }
  .logo i { font-size: 1.2rem; }
  .hero-title { font-size: 1.8rem; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .btn { justify-content: center; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .stat-number { font-size: 1.8rem; }
  .faq-question { padding: 16px 18px; font-size: 0.92rem; }
  .faq-answer { padding: 0 18px; }
  .faq-item.active .faq-answer { padding: 0 18px 18px; }
}

/* ===== Mobile Menu Fallback ===== */
@media (max-width: 768px) {
  .nav-list { display: none; }
  .nav-list.open { display: flex; }
}

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #dbeafe;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --bg: #ffffff;
            --bg-alt: #f8fafc;
            --bg-card: #ffffff;
            --text: #0f172a;
            --text-secondary: #475569;
            --text-weak: #94a3b8;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.10);
            --shadow-focus: 0 0 0 3px rgba(37, 99, 235, 0.25);
            --transition: 0.25s ease;
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --max-w: 1200px;
            --header-h: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: var(--radius-xs);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: 1rem;
            border: none;
            outline: none;
        }
        button {
            cursor: pointer;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--text);
        }
        h1 {
            font-size: 2.5rem;
        }
        h2 {
            font-size: 2rem;
        }
        h3 {
            font-size: 1.5rem;
        }
        h4 {
            font-size: 1.25rem;
        }
        p {
            margin-bottom: 1rem;
            color: var(--text-secondary);
        }
        .container {
            max-width: var(--max-w);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(16px) saturate(180%);
            -webkit-backdrop-filter: blur(16px) saturate(180%);
            border-bottom: 1px solid var(--border-light);
            transition: background var(--transition), box-shadow var(--transition);
        }
        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.96);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
        }
        .header-inner {
            max-width: var(--max-w);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .logo {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text);
            letter-spacing: -0.3px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .logo i {
            color: var(--primary);
            font-size: 1.5rem;
        }
        .logo span {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-list li a {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 100px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: background var(--transition), color var(--transition), box-shadow var(--transition);
            position: relative;
        }
        .nav-list li a:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .nav-list li a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.30);
        }
        .nav-list li a.active:hover {
            background: var(--primary-dark);
            color: #fff;
        }
        .nav-list li a.nav-cta {
            background: var(--accent);
            color: #fff;
            padding: 8px 24px;
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(245, 158, 11, 0.30);
        }
        .nav-list li a.nav-cta:hover {
            background: var(--accent-dark);
            transform: translateY(-1px);
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.35);
        }
        .nav-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--text);
            background: none;
            border: none;
            padding: 4px 8px;
            border-radius: var(--radius-xs);
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: var(--bg-alt);
        }

        /* ===== Mobile Nav ===== */
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav-list {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 24px 28px;
                gap: 6px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
                transform: translateY(-110%);
                opacity: 0;
                visibility: hidden;
                transition: transform 0.35s ease, opacity 0.35s ease, visibility 0.35s ease;
                border-radius: 0 0 var(--radius) var(--radius);
            }
            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            .nav-list li a {
                width: 100%;
                padding: 12px 20px;
                border-radius: var(--radius-sm);
                font-size: 1rem;
            }
            .nav-list li a.nav-cta {
                text-align: center;
                justify-content: center;
                margin-top: 6px;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            h3 {
                font-size: 1.25rem;
            }
            .container {
                padding: 0 16px;
            }
        }
        @media (max-width: 520px) {
            .logo {
                font-size: 1.1rem;
            }
            .logo i {
                font-size: 1.2rem;
            }
            .site-header {
                height: 64px;
            }
            :root {
                --header-h: 64px;
            }
        }

        /* ===== Page Banner ===== */
        .page-banner {
            padding: 120px 0 60px;
            background: var(--bg-alt);
            position: relative;
            overflow: hidden;
            min-height: 260px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.12;
            pointer-events: none;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-banner h1 {
            font-size: 2.2rem;
            margin-bottom: 12px;
            color: var(--text);
        }
        .page-banner .breadcrumb {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--text-secondary);
            flex-wrap: wrap;
        }
        .page-banner .breadcrumb a {
            color: var(--primary);
        }
        .page-banner .breadcrumb a:hover {
            text-decoration: underline;
        }
        .page-banner .breadcrumb .sep {
            color: var(--text-weak);
        }
        .page-banner .breadcrumb .current {
            color: var(--text-secondary);
            font-weight: 500;
        }
        @media (max-width: 768px) {
            .page-banner {
                padding: 100px 0 40px;
                min-height: 200px;
            }
            .page-banner h1 {
                font-size: 1.6rem;
            }
        }

        /* ===== Article Main ===== */
        .article-section {
            padding: 60px 0 80px;
            background: var(--bg);
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            align-items: start;
        }
        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 40px 44px;
            border: 1px solid var(--border-light);
        }
        .article-header-info {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px 24px;
            margin-bottom: 28px;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border);
        }
        .article-header-info .category-badge {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 100px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 600;
        }
        .article-header-info .meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.85rem;
            color: var(--text-weak);
        }
        .article-header-info .meta i {
            margin-right: 4px;
            font-size: 0.8rem;
        }
        .article-header-info .meta span {
            display: inline-flex;
            align-items: center;
        }
        .article-content {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-secondary);
        }
        .article-content p {
            margin-bottom: 1.25rem;
        }
        .article-content h2,
        .article-content h3,
        .article-content h4 {
            margin-top: 2rem;
            margin-bottom: 0.75rem;
            color: var(--text);
        }
        .article-content ul,
        .article-content ol {
            margin-bottom: 1.25rem;
            padding-left: 1.5rem;
            color: var(--text-secondary);
        }
        .article-content ul li {
            list-style: disc;
            margin-bottom: 0.35rem;
        }
        .article-content ol li {
            list-style: decimal;
            margin-bottom: 0.35rem;
        }
        .article-content a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-content a:hover {
            color: var(--primary-dark);
        }
        .article-content img {
            margin: 1.5rem 0;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow);
        }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            padding: 16px 20px;
            margin: 1.5rem 0;
            background: var(--bg-alt);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-content .cms-safe-html {
            all: revert;
        }
        .article-footer-nav {
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }
        .article-footer-nav a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 500;
            color: var(--primary);
            transition: gap var(--transition);
        }
        .article-footer-nav a:hover {
            gap: 12px;
        }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 28px 24px;
            border: 1px solid var(--border-light);
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--primary-light);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h3 i {
            color: var(--primary);
        }
        .sidebar-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .sidebar-list li a {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.92rem;
            color: var(--text-secondary);
            transition: color var(--transition), background var(--transition);
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            background: var(--bg-alt);
        }
        .sidebar-list li a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .sidebar-list li a i {
            color: var(--primary);
            font-size: 0.75rem;
            margin-top: 4px;
            flex-shrink: 0;
        }
        .sidebar-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border-radius: var(--radius);
            padding: 28px 24px;
            text-align: center;
        }
        .sidebar-cta h3 {
            color: #fff;
            border-bottom: none;
            justify-content: center;
            margin-bottom: 8px;
        }
        .sidebar-cta h3 i {
            color: var(--accent);
        }
        .sidebar-cta p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.95rem;
            margin-bottom: 20px;
        }
        .sidebar-cta .btn {
            background: var(--accent);
            color: #fff;
            padding: 12px 32px;
            border-radius: 100px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 16px rgba(245, 158, 11, 0.35);
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
        }
        .sidebar-cta .btn:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(245, 158, 11, 0.40);
        }

        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .article-sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 640px) {
            .article-body {
                padding: 24px 20px;
            }
            .article-sidebar {
                grid-template-columns: 1fr;
            }
            .article-header-info {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
        }

        /* ===== Related Posts ===== */
        .related-section {
            padding: 60px 0 80px;
            background: var(--bg-alt);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            margin-top: 36px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .related-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: 0;
        }
        .related-card .card-body {
            padding: 20px 22px 24px;
        }
        .related-card .card-body h4 {
            font-size: 1.05rem;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body h4 a {
            color: var(--text);
            transition: color var(--transition);
        }
        .related-card .card-body h4 a:hover {
            color: var(--primary);
        }
        .related-card .card-body .meta-sm {
            font-size: 0.8rem;
            color: var(--text-weak);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .related-card .card-body .meta-sm i {
            font-size: 0.75rem;
        }
        .section-title {
            text-align: center;
        }
        .section-title h2 {
            margin-bottom: 8px;
        }
        .section-title p {
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
        }
        @media (max-width: 900px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 560px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 60px 24px;
        }
        .not-found-box i {
            font-size: 4rem;
            color: var(--text-weak);
            margin-bottom: 20px;
        }
        .not-found-box h2 {
            margin-bottom: 12px;
        }
        .not-found-box p {
            color: var(--text-secondary);
            margin-bottom: 24px;
        }
        .not-found-box .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: 100px;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            transition: background var(--transition), transform var(--transition);
        }
        .not-found-box .btn:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
        }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: 70px 0;
            background: linear-gradient(135deg, var(--primary) 0%, #1e40af 100%);
            color: #fff;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            color: #fff;
            font-size: 2rem;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.1rem;
            max-width: 600px;
            margin: 0 auto 28px;
        }
        .cta-section .btn-group {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }
        .cta-section .btn-primary {
            background: var(--accent);
            color: #fff;
            padding: 14px 40px;
            border-radius: 100px;
            font-weight: 700;
            font-size: 1.05rem;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            box-shadow: 0 6px 24px rgba(245, 158, 11, 0.35);
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
        }
        .cta-section .btn-primary:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 32px rgba(245, 158, 11, 0.40);
            color: #fff;
        }
        .cta-section .btn-outline {
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.40);
            color: #fff;
            padding: 12px 36px;
            border-radius: 100px;
            font-weight: 600;
            transition: background var(--transition), border-color var(--transition), transform var(--transition);
        }
        .cta-section .btn-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.70);
            transform: translateY(-2px);
            color: #fff;
        }
        @media (max-width: 640px) {
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
            .cta-section .btn-primary,
            .cta-section .btn-outline {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0f172a;
            color: rgba(255, 255, 255, 0.70);
            padding: 48px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand .logo {
            color: #fff;
            font-size: 1.25rem;
            margin-bottom: 12px;
        }
        .footer-brand .logo i {
            color: #60a5fa;
        }
        .footer-brand .logo span {
            background: linear-gradient(135deg, #60a5fa, #a78bfa);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .footer-brand p {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.92rem;
            max-width: 320px;
            margin-bottom: 16px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            margin-bottom: 16px;
            font-weight: 600;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: #60a5fa;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.40);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
        }
        .footer-bottom a:hover {
            color: #60a5fa;
        }
        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer {
                padding: 32px 0 20px;
            }
        }

        /* ===== Utility ===== */
        .text-center {
            text-align: center;
        }
        .mb-1 {
            margin-bottom: 0.5rem;
        }
        .mb-2 {
            margin-bottom: 1rem;
        }
        .mb-3 {
            margin-bottom: 1.5rem;
        }
        .mb-4 {
            margin-bottom: 2rem;
        }
        .mt-2 {
            margin-top: 1rem;
        }
        .mt-3 {
            margin-top: 1.5rem;
        }
        .mt-4 {
            margin-top: 2rem;
        }
        .gap-1 {
            gap: 0.5rem;
        }
        .gap-2 {
            gap: 1rem;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }

        /* ===== Focus & Accessibility ===== */
        *:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: var(--radius-xs);
        }
        .skip-link {
            position: absolute;
            top: -100%;
            left: 16px;
            background: var(--primary);
            color: #fff;
            padding: 8px 20px;
            border-radius: 0 0 var(--radius-xs) var(--radius-xs);
            z-index: 9999;
            font-weight: 600;
            transition: top 0.3s;
        }
        .skip-link:focus {
            top: 0;
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #1e40af;
            --primary-light: #3b82f6;
            --primary-dark: #1e3a8a;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --accent-dark: #d97706;
            --bg: #f8fafc;
            --bg-card: #ffffff;
            --bg-dark: #0f172a;
            --bg-soft: #eef2ff;
            --text: #1e293b;
            --text-light: #64748b;
            --text-white: #f1f5f9;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --radius-full: 9999px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.10);
            --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.12);
            --transition: 0.30s cubic-bezier(0.22, 1, 0.36, 1);
            --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            --nav-height: 72px;
            --container: 1200px;
            --gap: 32px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            padding-top: var(--nav-height);
        }

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

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

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: 1rem;
            border: none;
            outline: none;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

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

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

        /* ===== Navigation - Floating Capsule ===== */
        .site-header {
            position: fixed;
            top: 16px;
            left: 50%;
            transform: translateX(-50%);
            width: calc(100% - 32px);
            max-width: var(--container);
            z-index: 1000;
            background: rgba(255, 255, 255, 0.72);
            backdrop-filter: blur(20px) saturate(1.4);
            -webkit-backdrop-filter: blur(20px) saturate(1.4);
            border-radius: var(--radius-full);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.4);
            padding: 0 24px;
            height: var(--nav-height);
            display: flex;
            align-items: center;
            justify-content: space-between;
            transition: box-shadow var(--transition), background var(--transition);
        }

        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.92);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
        }

        .site-logo {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }

        .site-logo i {
            color: var(--accent);
            font-size: 1.5rem;
        }

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

        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 2px;
        }

        .nav-list li a {
            display: block;
            padding: 8px 18px;
            border-radius: var(--radius-full);
            font-size: 0.94rem;
            font-weight: 500;
            color: var(--text-light);
            transition: all var(--transition);
            position: relative;
            white-space: nowrap;
        }

        .nav-list li a:hover {
            color: var(--primary);
            background: rgba(30, 64, 175, 0.06);
        }

        .nav-list li a.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 4px 14px rgba(30, 64, 175, 0.25);
        }

        .nav-list li a.active:hover {
            background: var(--primary-dark);
            color: #fff;
        }

        .nav-list li a.nav-cta {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #fff;
            font-weight: 600;
            padding: 8px 22px;
            box-shadow: 0 4px 16px rgba(245, 158, 11, 0.30);
        }

        .nav-list li a.nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(245, 158, 11, 0.40);
            background: linear-gradient(135deg, var(--accent-light), var(--accent));
        }

        .nav-toggle {
            display: none;
            font-size: 1.6rem;
            color: var(--text);
            cursor: pointer;
            background: none;
            border: none;
            padding: 4px 8px;
            border-radius: var(--radius-xs);
            transition: background var(--transition);
        }

        .nav-toggle:hover {
            background: rgba(0, 0, 0, 0.04);
        }

        /* ===== Hero / Banner ===== */
        .page-hero {
            position: relative;
            min-height: 380px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            padding: 80px 24px 60px;
            margin-top: -16px;
            border-radius: 0 0 40px 40px;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(15, 23, 42, 0.55);
            backdrop-filter: blur(2px);
            border-radius: 0 0 40px 40px;
        }

        .page-hero .hero-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
        }

        .page-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.18);
            backdrop-filter: blur(6px);
            padding: 6px 20px;
            border-radius: var(--radius-full);
            font-size: 0.85rem;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.15);
            margin-bottom: 20px;
        }

        .page-hero h1 {
            font-size: 3.2rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.01em;
            margin-bottom: 16px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
        }

        .page-hero h1 i {
            color: var(--accent);
        }

        .page-hero p {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 580px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
        }

        .hero-actions .btn-primary {
            background: var(--accent);
            color: #1e293b;
            font-weight: 700;
            padding: 14px 36px;
            border-radius: var(--radius-full);
            font-size: 1.05rem;
            box-shadow: 0 8px 28px rgba(245, 158, 11, 0.35);
            transition: all var(--transition);
        }

        .hero-actions .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(245, 158, 11, 0.45);
            background: var(--accent-light);
        }

        .hero-actions .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.35);
            padding: 12px 32px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 1.05rem;
            transition: all var(--transition);
        }

        .hero-actions .btn-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.6);
            transform: translateY(-3px);
        }

        /* ===== Section Shared ===== */
        section {
            padding: 80px 0;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            background: var(--bg-soft);
            padding: 6px 18px;
            border-radius: var(--radius-full);
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 12px;
            color: var(--text);
            letter-spacing: -0.01em;
        }

        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-light);
            max-width: 620px;
            margin: 0 auto 48px;
            line-height: 1.7;
        }

        .section-centered {
            text-align: center;
        }

        .section-title i {
            color: var(--accent);
        }

        /* ===== Intro Block ===== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .intro-image {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            background: var(--bg-soft);
            aspect-ratio: 4 / 3;
            object-fit: cover;
            width: 100%;
        }

        .intro-text h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .intro-text p {
            color: var(--text-light);
            margin-bottom: 16px;
            font-size: 1.02rem;
        }

        .intro-text .highlight {
            color: var(--primary);
            font-weight: 600;
        }

        /* ===== Feature Cards ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 28px;
        }

        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 36px 28px 32px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            text-align: center;
        }

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

        .feature-card .icon-wrap {
            width: 64px;
            height: 64px;
            border-radius: var(--radius-sm);
            background: var(--bg-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.8rem;
            color: var(--primary);
            transition: all var(--transition);
        }

        .feature-card:hover .icon-wrap {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }

        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .feature-card p {
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        /* ===== Content Cards (Platform List) ===== */
        .platform-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 28px;
        }

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

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

        .platform-card .card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            background: var(--bg-soft);
            display: block;
            border-bottom: 1px solid var(--border-light);
        }

        .platform-card .card-body {
            padding: 24px 24px 26px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .platform-card .card-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--accent-dark);
            background: rgba(245, 158, 11, 0.10);
            padding: 4px 14px;
            border-radius: var(--radius-full);
            margin-bottom: 12px;
            width: fit-content;
        }

        .platform-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .platform-card p {
            color: var(--text-light);
            font-size: 0.93rem;
            line-height: 1.6;
            flex: 1;
            margin-bottom: 16px;
        }

        .platform-card .card-link {
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition);
            width: fit-content;
        }

        .platform-card .card-link:hover {
            gap: 12px;
            color: var(--primary-light);
        }

        /* ===== Stats / Data Block ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 24px;
        }

        .stat-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 32px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }

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

        .stat-item .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 4px;
        }

        .stat-item .stat-label {
            font-size: 0.95rem;
            color: var(--text-light);
            font-weight: 500;
        }

        /* ===== Steps / Process ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 24px;
            counter-reset: step;
        }

        .step-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            position: relative;
            transition: all var(--transition);
        }

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

        .step-item::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: 16px;
            right: 20px;
            font-size: 3rem;
            font-weight: 800;
            color: rgba(30, 64, 175, 0.06);
            line-height: 1;
            transition: color var(--transition);
        }

        .step-item:hover::before {
            color: rgba(30, 64, 175, 0.12);
        }

        .step-item .step-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-full);
            background: var(--bg-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.5rem;
            color: var(--primary);
            transition: all var(--transition);
        }

        .step-item:hover .step-icon {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }

        .step-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .step-item p {
            color: var(--text-light);
            font-size: 0.92rem;
            line-height: 1.5;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }

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

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-size: 1.02rem;
            font-weight: 600;
            color: var(--text);
            background: none;
            cursor: pointer;
            text-align: left;
            transition: color var(--transition);
            gap: 16px;
            border: none;
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-question i {
            color: var(--primary);
            font-size: 1.1rem;
            transition: transform var(--transition);
            flex-shrink: 0;
        }

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

        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
            display: none;
        }

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

        .faq-answer a {
            color: var(--primary);
            font-weight: 500;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            border-radius: var(--radius);
            padding: 64px 48px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(15, 23, 42, 0.60);
            border-radius: var(--radius);
        }

        .cta-section * {
            position: relative;
            z-index: 2;
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.80);
            max-width: 520px;
            margin: 0 auto 28px;
            font-size: 1.05rem;
        }

        .cta-section .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--accent);
            color: #1e293b;
            font-weight: 700;
            padding: 16px 44px;
            border-radius: var(--radius-full);
            font-size: 1.1rem;
            box-shadow: 0 8px 32px rgba(245, 158, 11, 0.35);
            transition: all var(--transition);
        }

        .cta-section .btn-cta:hover {
            transform: translateY(-4px);
            box-shadow: 0 14px 48px rgba(245, 158, 11, 0.50);
            background: var(--accent-light);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 48px 24px 32px;
            margin-top: 80px;
            border-radius: 32px 32px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            max-width: var(--container);
            margin: 0 auto;
        }

        .footer-brand .site-logo {
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-brand .site-logo span {
            background: linear-gradient(135deg, #fff, #cbd5e1);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .footer-brand .site-logo i {
            color: var(--accent);
            -webkit-text-fill-color: unset;
        }

        .footer-brand p {
            font-size: 0.92rem;
            color: rgba(255, 255, 255, 0.55);
            max-width: 300px;
            line-height: 1.7;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.60);
            font-size: 0.92rem;
            transition: color var(--transition);
        }

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

        .footer-bottom {
            max-width: var(--container);
            margin: 32px auto 0;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.45);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        .footer-socials {
            display: flex;
            gap: 12px;
        }

        .footer-socials a {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-full);
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.50);
            font-size: 1.1rem;
            transition: all var(--transition);
        }

        .footer-socials a:hover {
            background: var(--accent);
            color: #1e293b;
            transform: translateY(-3px);
        }

        /* ===== Background Sections ===== */
        .bg-soft {
            background: var(--bg-soft);
        }

        .bg-white {
            background: var(--bg-card);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }

            .page-hero h1 {
                font-size: 2.6rem;
            }

            .intro-grid {
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 64px;
            }

            .site-header {
                top: 12px;
                padding: 0 16px;
                height: var(--nav-height);
                width: calc(100% - 20px);
            }

            .site-logo {
                font-size: 1.2rem;
            }
            .site-logo i {
                font-size: 1.2rem;
            }

            .nav-list {
                position: fixed;
                top: calc(var(--nav-height) + 16px);
                left: 10px;
                right: 10px;
                background: rgba(255, 255, 255, 0.96);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                border-radius: var(--radius);
                box-shadow: var(--shadow-lg);
                border: 1px solid var(--border);
                flex-direction: column;
                padding: 12px 8px;
                gap: 4px;
                display: none;
                z-index: 999;
            }

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

            .nav-list li a {
                padding: 12px 20px;
                width: 100%;
                text-align: left;
                border-radius: var(--radius-sm);
            }

            .nav-list li a.nav-cta {
                text-align: center;
                margin-top: 4px;
            }

            .nav-toggle {
                display: block;
            }

            .page-hero {
                min-height: 300px;
                padding: 60px 20px 48px;
                border-radius: 0 0 28px 28px;
            }

            .page-hero h1 {
                font-size: 2rem;
            }
            .page-hero p {
                font-size: 1rem;
            }

            section {
                padding: 56px 0;
            }

            .section-title {
                font-size: 1.7rem;
            }

            .intro-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .intro-image {
                aspect-ratio: 16 / 10;
            }

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

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

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

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

            .cta-section {
                padding: 40px 24px;
                border-radius: var(--radius-sm);
            }

            .cta-section h2 {
                font-size: 1.5rem;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .site-header {
                top: 8px;
                padding: 0 12px;
                height: 58px;
                width: calc(100% - 12px);
            }

            .site-logo {
                font-size: 1rem;
            }
            .site-logo i {
                font-size: 1rem;
            }

            .nav-list {
                top: calc(58px + 12px);
                left: 6px;
                right: 6px;
            }

            .page-hero h1 {
                font-size: 1.6rem;
            }

            .page-hero p {
                font-size: 0.92rem;
            }

            .hero-actions {
                flex-direction: column;
                align-items: center;
            }

            .hero-actions .btn-primary,
            .hero-actions .btn-outline {
                width: 100%;
                max-width: 280px;
                text-align: center;
            }

            .section-title {
                font-size: 1.4rem;
            }

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

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

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .stat-item .stat-number {
                font-size: 2rem;
            }

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

            .footer-grid {
                grid-template-columns: 1fr;
                text-align: center;
            }

            .footer-brand p {
                max-width: 100%;
                margin: 0 auto;
            }

            .footer-socials {
                justify-content: center;
            }

            .cta-section .btn-cta {
                width: 100%;
                max-width: 300px;
                justify-content: center;
            }
        }

        /* ===== Accessibility ===== */
        a:focus-visible,
        button:focus-visible,
        .faq-question:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
        }

        /* ===== Skeleton transition ===== */
        .fade-in {
            opacity: 0;
            transform: translateY(20px);
            animation: fadeIn 0.6s ease forwards;
        }

        @keyframes fadeIn {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }