/* roulang page: index */
:root {
  --primary: #0f1a2e;
  --primary-light: #1a2d4a;
  --accent: #d4a853;
  --accent-light: #e8c46a;
  --accent-dark: #b8923a;
  --bg: #f5f7fb;
  --bg-alt: #eef1f6;
  --card-bg: #ffffff;
  --text-primary: #1a1a2e;
  --text-secondary: #6b7280;
  --text-light: #9ca3af;
  --border: #e5e7eb;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body { font-family: var(--font-sans); background: var(--bg); color: var(--text-primary); line-height: 1.6; font-size: 16px; }
a { color: var(--accent); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent-dark); }
img { max-width: 100%; height: auto; display: block; }
button, input, textarea { font-family: inherit; font-size: 1rem; outline: none; border: none; }
button { cursor: pointer; }
ul, ol { list-style: none; }
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }
@media (max-width: 768px) { .container { padding: 0 16px; } }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 28px; border-radius: var(--radius-sm); font-weight: 600; font-size: 0.95rem; transition: var(--transition); border: 2px solid transparent; }
.btn-primary { background: var(--accent); color: #0f1a2e; border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-light); border-color: var(--accent-light); color: #0f1a2e; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(212,168,83,0.35); }
.btn-outline { background: transparent; color: var(--text-primary); border-color: var(--border); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
.btn-ghost { background: rgba(212,168,83,0.1); color: var(--accent); border-color: transparent; }
.btn-ghost:hover { background: rgba(212,168,83,0.2); color: var(--accent-dark); }

.section { padding: 80px 0; }
.section-alt { background: var(--bg-alt); }
.section-dark { background: var(--primary); color: #f0f0f0; }
.section-title { font-size: 2.2rem; font-weight: 700; margin-bottom: 12px; letter-spacing: -0.02em; }
.section-subtitle { font-size: 1.1rem; color: var(--text-secondary); max-width: 600px; line-height: 1.7; }
.section-header { text-align: center; margin-bottom: 56px; }
.section-header .section-subtitle { margin: 0 auto; }
@media (max-width: 768px) { .section { padding: 56px 0; } .section-title { font-size: 1.6rem; } }

.badge { display: inline-block; padding: 4px 14px; border-radius: 100px; font-size: 0.8rem; font-weight: 600; background: rgba(212,168,83,0.12); color: var(--accent-dark); letter-spacing: 0.3px; }
.badge-sm { padding: 2px 10px; font-size: 0.7rem; }

/* Header & Navigation */
.header { position: fixed; top: 0; left: 0; width: 100%; z-index: 1000; background: rgba(255,255,255,0.92); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border-bottom: 1px solid var(--border); transition: var(--transition); }
.header.scrolled { box-shadow: var(--shadow-md); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.nav-logo { display: flex; align-items: center; gap: 10px; font-size: 1.35rem; font-weight: 700; color: var(--primary); letter-spacing: -0.3px; }
.nav-logo i { color: var(--accent); font-size: 1.5rem; }
.nav-logo:hover { color: var(--primary); }
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a { font-size: 0.95rem; font-weight: 500; color: var(--text-secondary); position: relative; padding: 4px 0; }
.nav-links a::after { content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px; background: var(--accent); transition: var(--transition); border-radius: 2px; }
.nav-links a:hover { color: var(--text-primary); }
.nav-links a:hover::after { width: 100%; }
.nav-links a.active { color: var(--text-primary); font-weight: 600; }
.nav-links a.active::after { width: 100%; }
.nav-actions { display: flex; align-items: center; gap: 16px; }
.nav-search { display: flex; align-items: center; background: var(--bg-alt); border-radius: 100px; padding: 0 16px; border: 1px solid transparent; transition: var(--transition); }
.nav-search:focus-within { border-color: var(--accent); background: #fff; box-shadow: 0 0 0 4px rgba(212,168,83,0.1); }
.nav-search input { background: transparent; padding: 8px 12px; font-size: 0.9rem; width: 180px; color: var(--text-primary); }
.nav-search input::placeholder { color: var(--text-light); }
.nav-search i { color: var(--text-light); font-size: 0.9rem; }
.nav-cta { padding: 8px 22px; font-size: 0.9rem; }
.menu-toggle { display: none; background: none; font-size: 1.5rem; color: var(--text-primary); padding: 4px; }
@media (max-width: 868px) {
  .nav-links { display: none; position: absolute; top: 72px; left: 0; width: 100%; background: rgba(255,255,255,0.98); backdrop-filter: blur(20px); flex-direction: column; padding: 24px; gap: 16px; border-bottom: 1px solid var(--border); box-shadow: var(--shadow-md); }
  .nav-links.open { display: flex; }
  .nav-links a { font-size: 1.1rem; padding: 8px 0; }
  .nav-search input { width: 120px; }
  .menu-toggle { display: block; }
  .nav-cta span { display: none; }
}

/* Hero */
.hero { position: relative; min-height: 92vh; display: flex; align-items: center; background: var(--primary); overflow: hidden; padding-top: 72px; }
.hero-bg { position: absolute; inset: 0; background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat; opacity: 0.35; transform: scale(1.05); }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(15,26,46,0.92) 0%, rgba(15,26,46,0.7) 50%, rgba(15,26,46,0.85) 100%); }
.hero-content { position: relative; z-index: 2; max-width: 720px; padding: 80px 0; }
.hero-badge { display: inline-block; padding: 6px 18px; border-radius: 100px; background: rgba(212,168,83,0.18); color: var(--accent-light); font-size: 0.85rem; font-weight: 600; margin-bottom: 24px; letter-spacing: 0.5px; }
.hero-title { font-size: 3.6rem; font-weight: 800; color: #ffffff; line-height: 1.15; letter-spacing: -0.03em; margin-bottom: 20px; }
.hero-title span { color: var(--accent); }
.hero-desc { font-size: 1.2rem; color: rgba(255,255,255,0.75); line-height: 1.8; margin-bottom: 36px; max-width: 560px; }
.hero-actions { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.hero-actions .btn-primary { padding: 16px 36px; font-size: 1.05rem; }
.hero-actions .btn-outline { border-color: rgba(255,255,255,0.3); color: #fff; }
.hero-actions .btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.hero-stats { display: flex; gap: 40px; margin-top: 48px; padding-top: 32px; border-top: 1px solid rgba(255,255,255,0.12); }
.hero-stat h3 { font-size: 2rem; font-weight: 700; color: #fff; }
.hero-stat p { font-size: 0.9rem; color: rgba(255,255,255,0.6); }
@media (max-width: 768px) {
  .hero-title { font-size: 2.2rem; }
  .hero-desc { font-size: 1rem; }
  .hero-stats { gap: 24px; flex-wrap: wrap; }
  .hero-stat h3 { font-size: 1.5rem; }
  .hero-content { padding: 60px 0; }
}

/* Intro Section */
.intro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.intro-image { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); }
.intro-image img { width: 100%; height: 420px; object-fit: cover; }
.intro-text h2 { font-size: 2rem; font-weight: 700; margin-bottom: 16px; }
.intro-text p { color: var(--text-secondary); line-height: 1.8; margin-bottom: 16px; }
.intro-features { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 24px; }
.intro-feature { display: flex; align-items: center; gap: 12px; padding: 12px 16px; background: var(--bg-alt); border-radius: var(--radius-sm); }
.intro-feature i { color: var(--accent); font-size: 1.2rem; }
@media (max-width: 868px) {
  .intro-grid { grid-template-columns: 1fr; gap: 36px; }
  .intro-image img { height: 280px; }
  .intro-features { grid-template-columns: 1fr; }
}

/* Featured Cards */
.featured-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.featured-card { background: var(--card-bg); border-radius: var(--radius-md); padding: 36px 28px; box-shadow: var(--shadow-sm); border: 1px solid var(--border); transition: var(--transition); text-align: center; }
.featured-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(212,168,83,0.25); }
.featured-card .icon-wrap { width: 60px; height: 60px; border-radius: var(--radius-md); background: rgba(212,168,83,0.1); display: flex; align-items: center; justify-content: center; margin: 0 auto 20px; font-size: 1.8rem; color: var(--accent); }
.featured-card h3 { font-size: 1.25rem; font-weight: 700; margin-bottom: 10px; }
.featured-card p { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.7; }
@media (max-width: 868px) { .featured-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .featured-grid { grid-template-columns: 1fr; } }

/* Latest News */
.news-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.news-card { background: var(--card-bg); border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-sm); border: 1px solid var(--border); transition: var(--transition); display: flex; flex-direction: column; }
.news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.news-card-image { height: 200px; overflow: hidden; }
.news-card-image img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.news-card:hover .news-card-image img { transform: scale(1.05); }
.news-card-body { padding: 20px 24px 24px; flex: 1; display: flex; flex-direction: column; }
.news-card-body .badge { align-self: flex-start; margin-bottom: 12px; }
.news-card-body h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; line-height: 1.4; }
.news-card-body h3 a { color: var(--text-primary); }
.news-card-body h3 a:hover { color: var(--accent); }
.news-card-body p { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.7; margin-bottom: 16px; flex: 1; }
.news-card-meta { display: flex; align-items: center; gap: 16px; font-size: 0.82rem; color: var(--text-light); }
.news-card-meta i { margin-right: 4px; }
.empty-news { grid-column: 1 / -1; text-align: center; padding: 60px 20px; color: var(--text-secondary); background: var(--card-bg); border-radius: var(--radius-md); border: 1px dashed var(--border); }
@media (max-width: 768px) { .news-grid { grid-template-columns: 1fr; } }

/* Stats Section */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; text-align: center; }
.stat-item h3 { font-size: 2.8rem; font-weight: 800; color: var(--accent); line-height: 1.2; }
.stat-item p { color: rgba(255,255,255,0.7); font-size: 1rem; margin-top: 8px; }
@media (max-width: 868px) { .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; } .stat-item h3 { font-size: 2rem; } }

/* Process / Steps */
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; }
.process-step { text-align: center; position: relative; }
.process-step .step-num { width: 52px; height: 52px; border-radius: 50%; background: var(--accent); color: #0f1a2e; display: flex; align-items: center; justify-content: center; font-size: 1.4rem; font-weight: 700; margin: 0 auto 20px; box-shadow: 0 8px 24px rgba(212,168,83,0.3); }
.process-step h4 { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }
.process-step p { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.7; }
@media (max-width: 868px) { .process-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .process-grid { grid-template-columns: 1fr; } }

/* FAQ */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { background: var(--card-bg); border-radius: var(--radius-sm); border: 1px solid var(--border); margin-bottom: 12px; overflow: hidden; transition: var(--transition); }
.faq-item:hover { border-color: rgba(212,168,83,0.2); }
.faq-question { display: flex; align-items: center; justify-content: space-between; padding: 18px 24px; font-weight: 600; font-size: 1rem; color: var(--text-primary); background: none; width: 100%; text-align: left; }
.faq-question i { transition: var(--transition); color: var(--text-light); font-size: 0.9rem; }
.faq-item.open .faq-question i { transform: rotate(180deg); color: var(--accent); }
.faq-answer { padding: 0 24px; max-height: 0; overflow: hidden; transition: var(--transition); color: var(--text-secondary); line-height: 1.8; font-size: 0.95rem; }
.faq-item.open .faq-answer { padding: 0 24px 20px; max-height: 300px; }

/* CTA */
.cta-wrap { background: var(--primary); border-radius: var(--radius-lg); padding: 64px 48px; text-align: center; position: relative; overflow: hidden; }
.cta-wrap::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat; opacity: 0.12; }
.cta-wrap h2 { font-size: 2.2rem; font-weight: 700; color: #fff; position: relative; z-index: 1; }
.cta-wrap p { color: rgba(255,255,255,0.7); font-size: 1.1rem; max-width: 520px; margin: 16px auto 32px; position: relative; z-index: 1; }
.cta-wrap .btn-primary { font-size: 1.05rem; padding: 16px 40px; position: relative; z-index: 1; }
@media (max-width: 768px) { .cta-wrap { padding: 40px 24px; } .cta-wrap h2 { font-size: 1.6rem; } }

/* Footer */
.footer { background: var(--primary); color: rgba(255,255,255,0.7); padding: 60px 0 32px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand .nav-logo { color: #fff; margin-bottom: 16px; }
.footer-brand p { font-size: 0.9rem; line-height: 1.8; max-width: 320px; }
.footer-col h4 { color: #fff; font-size: 1rem; font-weight: 600; margin-bottom: 16px; }
.footer-col a { display: block; color: rgba(255,255,255,0.6); font-size: 0.9rem; padding: 4px 0; }
.footer-col a:hover { color: var(--accent); }
.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: 16px; font-size: 0.85rem; }
.footer-bottom a { color: rgba(255,255,255,0.6); }
.footer-bottom a:hover { color: var(--accent); }
@media (max-width: 868px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; } }
@media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; } .footer-bottom { flex-direction: column; text-align: center; } }

/* Page transitions */
.page-enter { animation: fadeInUp 0.5s ease both; }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }

/* roulang page: article */
:root {
  --primary: #1a3a8a;
  --primary-light: #2a5ad8;
  --primary-dark: #0f2360;
  --secondary: #f5b342;
  --secondary-light: #f8c96a;
  --accent: #e85d3a;
  --bg: #f8f9fc;
  --bg-alt: #edf0f7;
  --bg-dark: #0f1729;
  --text: #1a2332;
  --text-light: #5a6a7e;
  --text-lighter: #8a9aaa;
  --border: #dce0e8;
  --border-light: #eef0f5;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --shadow: 0 4px 20px rgba(0,0,0,0.06);
  --shadow-md: 0 8px 32px rgba(0,0,0,0.10);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.14);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --max-width: 1200px;
  --header-h: 72px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body { font-family: var(--font); font-size: 16px; line-height: 1.7; color: var(--text); background: var(--bg); }
a { color: var(--primary-light); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary); }
img { max-width: 100%; height: auto; display: block; }
button { cursor: pointer; font-family: inherit; }
input, textarea { font-family: inherit; }
ul, ol { list-style: none; }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
@media (max-width: 768px) { .container { padding: 0 16px; } }

/* Header */
.header { position: fixed; top: 0; left: 0; width: 100%; height: var(--header-h); background: rgba(255,255,255,0.96); backdrop-filter: blur(16px); border-bottom: 1px solid var(--border-light); z-index: 1000; transition: box-shadow var(--transition); }
.header.scrolled { box-shadow: var(--shadow); }
.nav { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); gap: 32px; }
.nav-logo { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 700; color: var(--primary); letter-spacing: -0.3px; white-space: nowrap; }
.nav-logo i { color: var(--secondary); font-size: 22px; }
.nav-logo:hover { color: var(--primary); }
.nav-links { display: flex; align-items: center; gap: 8px; }
.nav-links a { position: relative; padding: 8px 16px; font-size: 14px; font-weight: 500; color: var(--text-light); border-radius: var(--radius-sm); transition: all var(--transition); }
.nav-links a:hover { color: var(--primary); background: var(--bg-alt); }
.nav-links a.active { color: var(--primary); background: var(--bg-alt); font-weight: 600; }
.nav-links a.active::after { content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%); width: 20px; height: 3px; background: var(--primary); border-radius: 2px; }
.nav-actions { display: flex; align-items: center; gap: 16px; }
.nav-search { display: flex; align-items: center; gap: 8px; background: var(--bg-alt); border: 1px solid var(--border-light); border-radius: 100px; padding: 6px 16px; transition: all var(--transition); width: 200px; }
.nav-search:focus-within { border-color: var(--primary-light); background: #fff; box-shadow: 0 0 0 3px rgba(26,58,138,0.08); }
.nav-search i { color: var(--text-lighter); font-size: 14px; }
.nav-search input { border: none; background: transparent; outline: none; font-size: 13px; color: var(--text); width: 100%; }
.nav-search input::placeholder { color: var(--text-lighter); }
.nav-cta { display: flex; align-items: center; gap: 8px; padding: 10px 20px; font-size: 14px; font-weight: 600; border-radius: 100px; white-space: nowrap; }
.nav-cta i { font-size: 14px; }
.menu-toggle { display: none; background: none; border: none; font-size: 22px; color: var(--text); padding: 8px; border-radius: var(--radius-sm); transition: background var(--transition); }
.menu-toggle:hover { background: var(--bg-alt); }
@media (max-width: 1024px) { .nav-search { width: 140px; } .nav-links { gap: 4px; } .nav-links a { padding: 6px 12px; font-size: 13px; } }
@media (max-width: 768px) { .nav-links { display: none; position: absolute; top: var(--header-h); left: 0; width: 100%; background: #fff; border-bottom: 1px solid var(--border); padding: 16px 24px; flex-direction: column; gap: 4px; box-shadow: var(--shadow-md); } .nav-links.open { display: flex; } .nav-links a { width: 100%; padding: 12px 16px; } .nav-links a.active::after { display: none; } .nav-search { width: 120px; } .nav-cta span { display: none; } .nav-cta { padding: 10px 14px; } .menu-toggle { display: block; } }
@media (max-width: 520px) { .nav-logo { font-size: 17px; gap: 6px; } .nav-logo i { font-size: 18px; } .nav-search { width: 80px; padding: 6px 10px; } .nav-search input { font-size: 12px; } .nav-actions { gap: 8px; } }

/* Page Banner */
.page-banner { position: relative; margin-top: var(--header-h); padding: 120px 0 80px; background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%); overflow: hidden; }
.page-banner::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-1.png') center/cover no-repeat; opacity: 0.12; mix-blend-mode: overlay; }
.page-banner::after { content: ''; position: absolute; inset: 0; background: radial-gradient(ellipse at 30% 50%, rgba(245,179,66,0.10) 0%, transparent 60%); }
.page-banner .container { position: relative; z-index: 2; }
.page-banner h1 { font-size: 36px; font-weight: 800; color: #fff; line-height: 1.25; max-width: 800px; letter-spacing: -0.5px; }
.page-banner .breadcrumb { display: flex; align-items: center; gap: 8px; margin-bottom: 16px; font-size: 14px; color: rgba(255,255,255,0.7); }
.page-banner .breadcrumb a { color: rgba(255,255,255,0.8); }
.page-banner .breadcrumb a:hover { color: #fff; }
.page-banner .breadcrumb i { font-size: 12px; color: rgba(255,255,255,0.4); }
.page-banner .banner-meta { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 20px; font-size: 14px; color: rgba(255,255,255,0.75); }
.page-banner .banner-meta span { display: flex; align-items: center; gap: 6px; }
.page-banner .banner-meta i { font-size: 14px; }
.page-banner .banner-tag { display: inline-block; padding: 4px 14px; background: rgba(255,255,255,0.15); border: 1px solid rgba(255,255,255,0.20); border-radius: 100px; font-size: 13px; color: #fff; margin-bottom: 12px; }
@media (max-width: 768px) { .page-banner { padding: 100px 0 60px; } .page-banner h1 { font-size: 26px; } .page-banner .banner-meta { gap: 12px; font-size: 13px; } }
@media (max-width: 520px) { .page-banner { padding: 80px 0 40px; } .page-banner h1 { font-size: 22px; } }

/* Article Main */
.article-main { padding: 60px 0 80px; }
.article-layout { display: grid; grid-template-columns: 1fr 320px; gap: 48px; }
.article-body { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); padding: 40px; }
.article-body .content { font-size: 16px; line-height: 1.9; color: var(--text); }
.article-body .content p { margin-bottom: 20px; }
.article-body .content h2 { font-size: 24px; font-weight: 700; margin: 40px 0 16px; color: var(--primary); letter-spacing: -0.3px; }
.article-body .content h3 { font-size: 20px; font-weight: 600; margin: 32px 0 12px; color: var(--text); }
.article-body .content ul, .article-body .content ol { margin-bottom: 20px; padding-left: 24px; }
.article-body .content li { margin-bottom: 8px; position: relative; }
.article-body .content ul li::before { content: ''; position: absolute; left: -18px; top: 10px; width: 6px; height: 6px; background: var(--primary-light); border-radius: 50%; }
.article-body .content blockquote { margin: 24px 0; padding: 20px 24px; background: var(--bg-alt); border-left: 4px solid var(--primary); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; font-style: italic; color: var(--text-light); }
.article-body .content blockquote p:last-child { margin-bottom: 0; }
.article-body .content img { border-radius: var(--radius-sm); margin: 24px 0; }
.article-body .content a { color: var(--primary-light); text-decoration: underline; text-underline-offset: 2px; }
.article-body .content a:hover { color: var(--primary); }
.article-body .content .highlight { background: var(--bg-alt); padding: 2px 8px; border-radius: 4px; font-weight: 500; }
.article-body .article-footer { margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--border-light); display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 16px; }
.article-body .article-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.article-body .article-tags a { padding: 4px 14px; background: var(--bg-alt); border-radius: 100px; font-size: 13px; color: var(--text-light); }
.article-body .article-tags a:hover { background: var(--primary); color: #fff; }
.article-body .article-share { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--text-lighter); }
.article-body .article-share a { display: flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: 50%; background: var(--bg-alt); color: var(--text-light); transition: all var(--transition); }
.article-body .article-share a:hover { background: var(--primary); color: #fff; }
@media (max-width: 768px) { .article-body { padding: 24px; } .article-body .content { font-size: 15px; } .article-body .content h2 { font-size: 20px; } .article-body .content h3 { font-size: 17px; } }

/* Sidebar */
.article-sidebar { display: flex; flex-direction: column; gap: 32px; }
.sidebar-card { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); padding: 28px; }
.sidebar-card h3 { font-size: 16px; font-weight: 700; color: var(--text); margin-bottom: 16px; padding-bottom: 12px; border-bottom: 2px solid var(--secondary); display: flex; align-items: center; gap: 8px; }
.sidebar-card h3 i { color: var(--secondary); font-size: 16px; }
.sidebar-list { display: flex; flex-direction: column; gap: 12px; }
.sidebar-list a { display: flex; gap: 12px; padding: 8px 0; border-bottom: 1px solid var(--border-light); transition: all var(--transition); }
.sidebar-list a:last-child { border-bottom: none; }
.sidebar-list a .list-img { width: 64px; height: 48px; border-radius: 6px; object-fit: cover; flex-shrink: 0; }
.sidebar-list a .list-info { flex: 1; min-width: 0; }
.sidebar-list a .list-info .list-title { font-size: 14px; font-weight: 500; color: var(--text); line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.sidebar-list a .list-info .list-date { font-size: 12px; color: var(--text-lighter); margin-top: 4px; }
.sidebar-list a:hover .list-title { color: var(--primary-light); }
.sidebar-cta { background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%); color: #fff; text-align: center; padding: 32px 24px; }
.sidebar-cta h3 { color: #fff; border-bottom-color: rgba(255,255,255,0.20); }
.sidebar-cta p { font-size: 14px; color: rgba(255,255,255,0.80); margin-bottom: 20px; line-height: 1.6; }
.sidebar-cta .btn { background: var(--secondary); color: var(--primary-dark); padding: 12px 28px; border-radius: 100px; font-weight: 600; font-size: 15px; transition: all var(--transition); display: inline-flex; align-items: center; gap: 8px; }
.sidebar-cta .btn:hover { background: var(--secondary-light); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(245,179,66,0.30); }
.sidebar-cats { display: flex; flex-direction: column; gap: 4px; }
.sidebar-cats a { padding: 10px 16px; border-radius: var(--radius-sm); font-size: 14px; color: var(--text); display: flex; align-items: center; justify-content: space-between; transition: all var(--transition); }
.sidebar-cats a:hover, .sidebar-cats a.active { background: var(--bg-alt); color: var(--primary); }
.sidebar-cats a span { color: var(--text-lighter); font-size: 13px; }
@media (max-width: 1024px) { .article-layout { grid-template-columns: 1fr; gap: 32px; } .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; } .sidebar-card { padding: 20px; } }
@media (max-width: 520px) { .article-sidebar { grid-template-columns: 1fr; } }

/* CTA Section */
.article-cta { padding: 80px 0; background: var(--bg-dark); position: relative; overflow: hidden; }
.article-cta::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center/cover no-repeat; opacity: 0.08; mix-blend-mode: overlay; }
.article-cta .container { position: relative; z-index: 2; text-align: center; }
.article-cta h2 { font-size: 32px; font-weight: 800; color: #fff; margin-bottom: 16px; letter-spacing: -0.5px; }
.article-cta p { font-size: 16px; color: rgba(255,255,255,0.75); max-width: 600px; margin: 0 auto 32px; line-height: 1.7; }
.article-cta .btn-group { display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; }
.article-cta .btn-primary { background: var(--secondary); color: var(--primary-dark); padding: 14px 36px; border-radius: 100px; font-weight: 700; font-size: 16px; transition: all var(--transition); display: inline-flex; align-items: center; gap: 10px; }
.article-cta .btn-primary:hover { background: var(--secondary-light); transform: translateY(-3px); box-shadow: 0 12px 32px rgba(245,179,66,0.35); }
.article-cta .btn-outline { border: 2px solid rgba(255,255,255,0.25); color: #fff; padding: 12px 32px; border-radius: 100px; font-weight: 600; font-size: 15px; transition: all var(--transition); display: inline-flex; align-items: center; gap: 8px; }
.article-cta .btn-outline:hover { background: rgba(255,255,255,0.10); border-color: rgba(255,255,255,0.40); transform: translateY(-2px); }
@media (max-width: 768px) { .article-cta { padding: 60px 0; } .article-cta h2 { font-size: 26px; } .article-cta p { font-size: 15px; } }

/* Related */
.related-section { padding: 60px 0; background: var(--bg); }
.related-section .section-title { text-align: center; margin-bottom: 40px; }
.related-section .section-title h2 { font-size: 28px; font-weight: 800; color: var(--text); letter-spacing: -0.5px; }
.related-section .section-title p { color: var(--text-light); margin-top: 8px; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.related-card { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; transition: all var(--transition); }
.related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.related-card .card-img { width: 100%; height: 180px; object-fit: cover; }
.related-card .card-body { padding: 20px; }
.related-card .card-body .card-tag { display: inline-block; padding: 2px 10px; background: var(--bg-alt); border-radius: 100px; font-size: 12px; color: var(--primary); margin-bottom: 8px; }
.related-card .card-body h3 { font-size: 16px; font-weight: 600; line-height: 1.4; margin-bottom: 8px; }
.related-card .card-body h3 a { color: var(--text); }
.related-card .card-body h3 a:hover { color: var(--primary-light); }
.related-card .card-body p { font-size: 14px; color: var(--text-light); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-card .card-body .card-meta { display: flex; align-items: center; gap: 12px; margin-top: 12px; font-size: 12px; color: var(--text-lighter); }
@media (max-width: 1024px) { .related-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .related-grid { grid-template-columns: 1fr; } .related-section .section-title h2 { font-size: 22px; } }

/* Footer */
.footer { background: var(--bg-dark); color: rgba(255,255,255,0.80); padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand .nav-logo { color: #fff; font-size: 20px; margin-bottom: 16px; }
.footer-brand .nav-logo i { color: var(--secondary); }
.footer-brand p { font-size: 14px; line-height: 1.7; color: rgba(255,255,255,0.60); max-width: 360px; }
.footer-col h4 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 16px; }
.footer-col a { display: block; padding: 6px 0; font-size: 14px; color: rgba(255,255,255,0.60); transition: all var(--transition); }
.footer-col a:hover { color: var(--secondary); padding-left: 4px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding: 20px 0; display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 12px; font-size: 13px; color: rgba(255,255,255,0.40); }
.footer-bottom a { color: rgba(255,255,255,0.55); }
.footer-bottom a:hover { color: var(--secondary); }
@media (max-width: 1024px) { .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; } .footer-bottom { flex-direction: column; text-align: center; } }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font-weight: 600; transition: all var(--transition); border: none; }
.btn-primary { background: var(--primary); color: #fff; padding: 12px 24px; border-radius: 100px; }
.btn-primary:hover { background: var(--primary-light); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(26,58,138,0.25); }
.btn-secondary { background: var(--secondary); color: var(--primary-dark); padding: 12px 24px; border-radius: 100px; }
.btn-secondary:hover { background: var(--secondary-light); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(245,179,66,0.30); }
.btn-outline { border: 2px solid var(--border); color: var(--text); padding: 10px 22px; border-radius: 100px; background: transparent; }
.btn-outline:hover { border-color: var(--primary-light); color: var(--primary-light); transform: translateY(-1px); }

/* Not found */
.not-found { text-align: center; padding: 80px 20px; }
.not-found i { font-size: 56px; color: var(--text-lighter); margin-bottom: 24px; }
.not-found h2 { font-size: 28px; color: var(--text); margin-bottom: 12px; }
.not-found p { color: var(--text-light); margin-bottom: 24px; }
.not-found .btn { display: inline-flex; }

/* Animations */
@keyframes fadeInUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: translateY(0); } }
.animate { animation: fadeInUp 0.6s ease forwards; }
.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }

/* Mobile scrollbar */
@media (max-width: 768px) { ::-webkit-scrollbar { width: 4px; } ::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; } }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #dbeafe;
            --primary-bg: #f0f7ff;
            --accent: #f59e0b;
            --accent-hover: #d97706;
            --accent-light: #fef3c7;
            --bg: #ffffff;
            --bg-alt: #f8fafc;
            --bg-dark: #0f172a;
            --bg-card: #ffffff;
            --text: #1e293b;
            --text-light: #64748b;
            --text-lighter: #94a3b8;
            --text-white: #ffffff;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
            --shadow: 0 4px 16px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.08);
            --shadow-lg: 0 16px 40px rgba(0,0,0,0.10);
            --shadow-xl: 0 24px 60px rgba(0,0,0,0.14);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.45s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 72px;
            --font-sans: system-ui, -apple-system, 'Segoe UI', Roboto, 'Noto Sans', 'Helvetica Neue', sans-serif;
        }

        /* ===== 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-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        a:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; border-radius: 4px; }

        button { cursor: pointer; font-family: inherit; border: none; background: none; }
        button:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; border-radius: 6px; }

        input, textarea { font-family: inherit; font-size: 1rem; border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 10px 16px; transition: var(--transition); }
        input:focus, textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-light); }

        ul, ol { list-style: none; }

        h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--text); }
        h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
        h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
        h3 { font-size: clamp(1.2rem, 2.2vw, 1.6rem); }
        h4 { font-size: clamp(1rem, 1.6vw, 1.2rem); }

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

        .section-padding { padding: 80px 0; }
        .section-padding-sm { padding: 56px 0; }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 4px 14px;
            border-radius: 50px;
            letter-spacing: 0.3px;
            text-transform: uppercase;
            margin-bottom: 12px;
        }

        .section-title {
            text-align: center;
            margin-bottom: 16px;
        }

        .section-subtitle {
            text-align: center;
            color: var(--text-light);
            font-size: 1.1rem;
            max-width: 600px;
            margin: 0 auto 48px;
        }

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

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 12px 28px;
            border-radius: 50px;
            transition: var(--transition);
            border: 2px solid transparent;
            white-space: nowrap;
            line-height: 1.2;
        }
        .btn-primary {
            background: var(--primary);
            color: var(--text-white);
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: var(--text-white);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: var(--text-white);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .btn-outline:active {
            transform: translateY(0);
        }
        .btn-accent {
            background: var(--accent);
            color: var(--text-white);
            border-color: var(--accent);
        }
        .btn-accent:hover {
            background: var(--accent-hover);
            border-color: var(--accent-hover);
            color: var(--text-white);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .btn-lg { padding: 16px 40px; font-size: 1.05rem; }
        .btn-sm { padding: 8px 20px; font-size: 0.85rem; }

        /* ===== Badge / Tag ===== */
        .badge {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 50px;
            background: var(--primary-light);
            color: var(--primary);
            letter-spacing: 0.2px;
        }
        .badge-accent {
            background: var(--accent-light);
            color: var(--accent-hover);
        }
        .badge-outline {
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text-light);
        }

        /* ===== Header / Nav ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-height);
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            z-index: 1000;
            transition: var(--transition);
        }
        .header.scrolled {
            box-shadow: var(--shadow);
            border-bottom-color: var(--border);
        }

        .nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            gap: 16px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .nav-logo i { color: var(--primary); font-size: 1.3rem; }
        .nav-logo:hover { color: var(--primary); }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-shrink: 0;
        }
        .nav-links a {
            padding: 8px 18px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-light);
            border-radius: 50px;
            transition: var(--transition);
            position: relative;
        }
        .nav-links a:hover { color: var(--text); background: var(--bg-alt); }
        .nav-links a.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .nav-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--bg-alt);
            border: 1px solid var(--border-light);
            border-radius: 50px;
            padding: 4px 16px 4px 12px;
            transition: var(--transition);
            min-width: 180px;
        }
        .nav-search:focus-within {
            border-color: var(--primary);
            background: var(--bg);
            box-shadow: 0 0 0 3px var(--primary-light);
        }
        .nav-search i { color: var(--text-lighter); font-size: 0.9rem; }
        .nav-search input {
            border: none;
            background: transparent;
            padding: 8px 0;
            font-size: 0.9rem;
            width: 100%;
            min-width: 80px;
        }
        .nav-search input::placeholder { color: var(--text-lighter); }

        .nav-cta { padding: 10px 24px; font-size: 0.9rem; }
        .nav-cta i { font-size: 0.8rem; }

        .menu-toggle {
            display: none;
            font-size: 1.4rem;
            color: var(--text);
            padding: 8px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .menu-toggle:hover { background: var(--bg-alt); }

        /* ===== Hero / Banner ===== */
        .page-hero {
            position: relative;
            min-height: 320px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 120px 24px 80px;
            background: linear-gradient(135deg, var(--bg-dark) 0%, #1e293b 100%);
            overflow: hidden;
        }
        .page-hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.3;
            z-index: 0;
            animation: heroZoom 20s ease-in-out infinite alternate;
        }
        @keyframes heroZoom {
            0% { transform: scale(1); }
            100% { transform: scale(1.08); }
        }
        .page-hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to bottom, rgba(15,23,42,0.3) 0%, rgba(15,23,42,0.8) 100%);
            z-index: 1;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .page-hero h1 {
            color: var(--text-white);
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .page-hero h1 i { color: var(--accent); }
        .page-hero p {
            color: rgba(255,255,255,0.8);
            font-size: 1.15rem;
            max-width: 640px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .page-hero .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            justify-content: center;
        }
        .page-hero .hero-badges span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255,255,255,0.12);
            backdrop-filter: blur(4px);
            color: rgba(255,255,255,0.9);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid rgba(255,255,255,0.08);
        }
        .page-hero .hero-badges span i { color: var(--accent); font-size: 0.75rem; }

        /* ===== Card ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            padding: 28px 24px;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--border);
            transform: translateY(-4px);
        }
        .card-img {
            border-radius: var(--radius-sm);
            overflow: hidden;
            margin-bottom: 16px;
            background: var(--bg-alt);
        }
        .card-img img { width: 100%; height: 200px; object-fit: cover; transition: var(--transition-slow); }
        .card:hover .card-img img { transform: scale(1.04); }
        .card h3 { margin-bottom: 8px; }
        .card p { color: var(--text-light); font-size: 0.95rem; line-height: 1.6; margin-bottom: 16px; }
        .card .card-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }

        /* ===== Grid Layouts ===== */
        .grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
        .grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 28px; }
        .grid-4 { display: grid; grid-template-columns: 1fr 1fr 1fr 1fr; gap: 24px; }

        /* ===== Steps / Timeline ===== */
        .steps { counter-reset: step; display: grid; grid-template-columns: 1fr 1fr 1fr 1fr; gap: 24px; }
        .step-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            padding: 32px 24px;
            text-align: center;
            transition: var(--transition);
            position: relative;
            box-shadow: var(--shadow-sm);
        }
        .step-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--border);
            transform: translateY(-4px);
        }
        .step-item::before {
            counter-increment: step;
            content: counter(step);
            display: flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 700;
            font-size: 1.1rem;
            margin: 0 auto 16px;
            transition: var(--transition);
        }
        .step-item:hover::before {
            background: var(--primary);
            color: var(--text-white);
        }
        .step-item h4 { margin-bottom: 8px; font-size: 1.05rem; }
        .step-item p { color: var(--text-light); font-size: 0.9rem; line-height: 1.5; margin-bottom: 0; }

        /* ===== Feature Block ===== */
        .feature-block {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 24px;
            border-radius: var(--radius);
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .feature-block:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--border);
            transform: translateY(-2px);
        }
        .feature-icon {
            flex-shrink: 0;
            width: 56px;
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            background: var(--primary-light);
            color: var(--primary);
            font-size: 1.4rem;
            transition: var(--transition);
        }
        .feature-block:hover .feature-icon {
            background: var(--primary);
            color: var(--text-white);
        }
        .feature-block h4 { margin-bottom: 6px; font-size: 1.05rem; }
        .feature-block p { color: var(--text-light); font-size: 0.9rem; line-height: 1.5; margin-bottom: 0; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
            background: var(--bg-card);
        }
        .faq-item:hover { border-color: var(--border); }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            background: none;
            width: 100%;
            text-align: left;
            color: var(--text);
            gap: 16px;
            transition: var(--transition);
        }
        .faq-question:hover { color: var(--primary); }
        .faq-question i { color: var(--text-lighter); transition: var(--transition); font-size: 0.85rem; flex-shrink: 0; }
        .faq-item.active .faq-question i { transform: rotate(180deg); color: var(--primary); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--bg-dark) 0%, #1e293b 100%);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.1;
            z-index: 0;
        }
        .cta-section .container { position: relative; z-index: 1; }
        .cta-section h2 { color: var(--text-white); margin-bottom: 12px; }
        .cta-section p { color: rgba(255,255,255,0.7); max-width: 560px; margin: 0 auto 32px; font-size: 1.05rem; }
        .cta-section .cta-buttons { display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            padding: 60px 0 0;
            color: rgba(255,255,255,0.7);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-brand .nav-logo { color: var(--text-white); font-size: 1.3rem; margin-bottom: 16px; }
        .footer-brand .nav-logo i { color: var(--accent); }
        .footer-brand .nav-logo:hover { color: var(--accent); }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; max-width: 360px; }
        .footer-col h4 { color: var(--text-white); font-size: 1rem; font-weight: 600; margin-bottom: 16px; }
        .footer-col a {
            display: block;
            color: rgba(255,255,255,0.55);
            font-size: 0.9rem;
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover { color: var(--accent); padding-left: 4px; }
        .footer-bottom {
            padding: 24px 0;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: var(--accent); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .grid-4 { grid-template-columns: 1fr 1fr; gap: 20px; }
            .steps { grid-template-columns: 1fr 1fr; gap: 20px; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .nav-search { min-width: 140px; }
        }

        @media (max-width: 768px) {
            .section-padding { padding: 56px 0; }
            .section-padding-sm { padding: 40px 0; }

            .nav-links {
                position: fixed;
                top: var(--header-height);
                left: 0;
                width: 100%;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-md);
                transform: translateY(-120%);
                opacity: 0;
                transition: var(--transition);
                z-index: 999;
            }
            .nav-links.open { transform: translateY(0); opacity: 1; }
            .nav-links a { width: 100%; padding: 12px 18px; font-size: 1rem; }
            .menu-toggle { display: block; }

            .nav-search { min-width: 0; flex: 0 1 auto; padding: 4px 12px 4px 8px; }
            .nav-search input { width: 60px; min-width: 0; }
            .nav-search input:focus { width: 120px; }

            .nav-cta span { display: none; }
            .nav-cta i { margin-right: 0; }

            .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; gap: 20px; }
            .steps { grid-template-columns: 1fr; gap: 16px; }

            .page-hero { min-height: 260px; padding: 100px 20px 60px; }
            .page-hero h1 { font-size: 1.8rem; }
            .page-hero p { font-size: 1rem; }

            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }

            .feature-block { padding: 20px; }
            .card { padding: 20px; }
        }

        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .section-padding { padding: 40px 0; }
            .page-hero { min-height: 220px; padding: 80px 16px 48px; }
            .page-hero h1 { font-size: 1.5rem; }
            .page-hero p { font-size: 0.9rem; }
            .nav-logo { font-size: 1.05rem; }
            .nav-search { display: none; }
            .nav-cta { padding: 8px 16px; font-size: 0.8rem; }
            .btn-lg { padding: 12px 28px; font-size: 0.95rem; }
            .faq-question { padding: 16px 18px; font-size: 0.9rem; }
            .faq-answer { font-size: 0.88rem; }
        }

        /* ===== Utility ===== */
        .mb-8 { margin-bottom: 8px; }
        .mb-16 { margin-bottom: 16px; }
        .mb-24 { margin-bottom: 24px; }
        .mb-32 { margin-bottom: 32px; }
        .mb-48 { margin-bottom: 48px; }
        .mt-16 { margin-top: 16px; }
        .mt-24 { margin-top: 24px; }
        .mt-32 { margin-top: 32px; }
        .gap-8 { gap: 8px; }
        .gap-12 { gap: 12px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .flex-wrap { flex-wrap: wrap; }
        .w-full { width: 100%; }

        /* ===== Animations ===== */
        @keyframes fadeUp {
            from { opacity: 0; transform: translateY(24px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .animate-fade-up {
            animation: fadeUp 0.6s ease forwards;
        }
        .animate-delay-1 { animation-delay: 0.1s; }
        .animate-delay-2 { animation-delay: 0.2s; }
        .animate-delay-3 { animation-delay: 0.3s; }
        .animate-delay-4 { animation-delay: 0.4s; }