/* roulang page: index */
:root {
  --primary: #1a1f36;
  --primary-light: #2a3150;
  --accent: #e8b949;
  --accent-hover: #d4a434;
  --accent-light: #fdf6e3;
  --bg: #f7f8fc;
  --bg-white: #ffffff;
  --bg-card: #ffffff;
  --text: #1a1f36;
  --text-light: #6b7280;
  --text-white: #ffffff;
  --border: #e5e7eb;
  --border-light: #f0f0f5;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --shadow: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
  --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --max-width: 1200px;
  --header-top-h: 40px;
  --nav-h: 72px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); font-size: 16px; line-height: 1.7; color: var(--text); background: var(--bg); -webkit-font-smoothing: antialiased; }
a { color: var(--accent); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent-hover); }
img { max-width: 100%; height: auto; display: block; }
button, input, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
ul, ol { list-style: none; }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-title { font-size: 2rem; font-weight: 700; margin-bottom: 12px; color: var(--primary); letter-spacing: -0.02em; }
.section-subtitle { font-size: 1.05rem; color: var(--text-light); max-width: 640px; line-height: 1.6; }
.text-center { text-align: center; }
.mx-auto { margin-left: auto; margin-right: auto; }
.grid { display: grid; gap: 28px; }
.grid-2 { grid-template-columns: 1fr 1fr; }
.grid-3 { grid-template-columns: 1fr 1fr 1fr; }
.grid-4 { grid-template-columns: 1fr 1fr 1fr 1fr; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 14px 32px; border-radius: var(--radius-sm); font-weight: 600; font-size: 0.95rem; cursor: pointer; transition: var(--transition); border: 2px solid transparent; }
.btn-primary { background: var(--accent); color: var(--primary); border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: var(--primary); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(232,185,73,0.35); }
.btn-outline { background: transparent; color: var(--text-white); border-color: rgba(255,255,255,0.5); }
.btn-outline:hover { background: rgba(255,255,255,0.12); border-color: var(--text-white); color: var(--text-white); transform: translateY(-2px); }
.btn-accent-outline { background: transparent; color: var(--accent); border-color: var(--accent); }
.btn-accent-outline:hover { background: var(--accent); color: var(--primary); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(232,185,73,0.3); }
.card { background: var(--bg-card); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; transition: var(--transition); border: 1px solid var(--border-light); }
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.badge { display: inline-block; padding: 4px 14px; border-radius: 20px; font-size: 0.78rem; font-weight: 600; background: var(--accent-light); color: var(--accent-hover); }
.badge-sm { padding: 2px 10px; font-size: 0.7rem; }
/* Header Top */
.header-top { background: var(--primary); height: var(--header-top-h); display: flex; align-items: center; font-size: 0.82rem; color: rgba(255,255,255,0.7); }
.header-top .container { display: flex; justify-content: space-between; align-items: center; width: 100%; }
.header-top a { color: rgba(255,255,255,0.8); font-size: 0.82rem; }
.header-top a:hover { color: var(--accent); }
/* Nav */
.main-nav { background: var(--bg-white); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 100; height: var(--nav-h); }
.main-nav .container { display: flex; align-items: center; justify-content: space-between; height: 100%; }
.nav-brand { font-size: 1.4rem; font-weight: 800; color: var(--primary); letter-spacing: -0.03em; }
.nav-brand span { color: var(--accent); }
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a { font-size: 0.92rem; font-weight: 500; color: var(--text); 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); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-links a.active { color: var(--accent); }
.nav-cta { background: var(--accent); color: var(--primary) !important; padding: 8px 20px !important; border-radius: var(--radius-sm); font-weight: 600; }
.nav-cta:hover { background: var(--accent-hover); color: var(--primary) !important; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; background: none; padding: 4px; }
.nav-toggle span { width: 26px; height: 2.5px; background: var(--primary); border-radius: 4px; transition: var(--transition); }
/* Hero */
.hero { position: relative; min-height: 580px; display: flex; align-items: center; background: var(--primary); overflow: hidden; }
.hero-bg { position: absolute; inset: 0; background: url('/assets/images/backpic/back-1.png') center/cover no-repeat; opacity: 0.45; }
.hero-bg::after { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(26,31,54,0.88) 0%, rgba(26,31,54,0.6) 100%); }
.hero .container { position: relative; z-index: 2; width: 100%; }
.hero-content { max-width: 700px; }
.hero-badge { display: inline-block; padding: 6px 20px; border-radius: 20px; background: rgba(232,185,73,0.18); color: var(--accent); font-size: 0.85rem; font-weight: 600; margin-bottom: 20px; border: 1px solid rgba(232,185,73,0.25); }
.hero h1 { font-size: 3rem; font-weight: 800; color: var(--text-white); line-height: 1.2; margin-bottom: 18px; letter-spacing: -0.02em; }
.hero p { font-size: 1.15rem; color: rgba(255,255,255,0.75); max-width: 560px; line-height: 1.7; margin-bottom: 32px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
/* Features */
.features .grid { gap: 32px; }
.feature-card { padding: 36px 28px; text-align: center; }
.feature-icon { width: 60px; height: 60px; border-radius: 16px; background: var(--accent-light); display: flex; align-items: center; justify-content: center; margin: 0 auto 18px; font-size: 1.6rem; color: var(--accent-hover); }
.feature-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 10px; color: var(--primary); }
.feature-card p { font-size: 0.92rem; color: var(--text-light); line-height: 1.6; }
/* Category Section */
.category-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; }
.cat-card { position: relative; border-radius: var(--radius); overflow: hidden; height: 200px; display: flex; align-items: flex-end; cursor: pointer; transition: var(--transition); }
.cat-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.cat-card:hover img { transform: scale(1.06); }
.cat-card-overlay { position: absolute; inset: 0; background: linear-gradient(0deg, rgba(26,31,54,0.85) 0%, rgba(26,31,54,0.15) 70%); z-index: 1; }
.cat-card-content { position: relative; z-index: 2; padding: 24px; width: 100%; }
.cat-card-content h3 { color: var(--text-white); font-size: 1.2rem; font-weight: 700; margin-bottom: 4px; }
.cat-card-content p { color: rgba(255,255,255,0.7); font-size: 0.85rem; }
.cat-card .cat-count { position: absolute; top: 16px; right: 16px; z-index: 2; background: var(--accent); color: var(--primary); padding: 2px 12px; border-radius: 12px; font-size: 0.75rem; font-weight: 700; }
/* Latest Posts */
.posts-list { display: flex; flex-direction: column; gap: 20px; }
.post-item { display: flex; gap: 24px; padding: 24px; background: var(--bg-card); border-radius: var(--radius); box-shadow: var(--shadow); border: 1px solid var(--border-light); transition: var(--transition); }
.post-item:hover { transform: translateX(4px); box-shadow: var(--shadow-lg); }
.post-thumb { width: 180px; min-height: 120px; border-radius: var(--radius-sm); overflow: hidden; flex-shrink: 0; background: var(--border-light); }
.post-thumb img { width: 100%; height: 100%; object-fit: cover; }
.post-body { flex: 1; display: flex; flex-direction: column; justify-content: center; }
.post-body .badge { margin-bottom: 8px; align-self: flex-start; }
.post-body h3 { font-size: 1.15rem; font-weight: 700; color: var(--primary); margin-bottom: 8px; line-height: 1.4; }
.post-body h3 a { color: var(--primary); }
.post-body h3 a:hover { color: var(--accent); }
.post-excerpt { font-size: 0.9rem; color: var(--text-light); line-height: 1.6; margin-bottom: 10px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.post-meta { display: flex; align-items: center; gap: 16px; font-size: 0.8rem; color: var(--text-light); }
.post-meta i { margin-right: 4px; }
.post-empty { text-align: center; padding: 60px 20px; color: var(--text-light); font-size: 1rem; background: var(--bg-white); border-radius: var(--radius); border: 1px dashed var(--border); }
/* Stats */
.stats-section { background: var(--primary); position: relative; overflow: hidden; }
.stats-section::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center/cover no-repeat; opacity: 0.12; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; position: relative; z-index: 1; }
.stat-item { text-align: center; padding: 20px; }
.stat-number { font-size: 2.6rem; font-weight: 800; color: var(--accent); line-height: 1.2; margin-bottom: 6px; }
.stat-label { font-size: 0.92rem; color: rgba(255,255,255,0.7); }
/* FAQ */
.faq-list { max-width: 800px; 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); overflow: hidden; }
.faq-question { padding: 18px 24px; font-weight: 600; font-size: 1rem; color: var(--primary); cursor: pointer; display: flex; justify-content: space-between; align-items: center; transition: var(--transition); background: none; width: 100%; text-align: left; }
.faq-question:hover { background: var(--accent-light); }
.faq-question i { transition: var(--transition); color: var(--text-light); font-size: 0.85rem; }
.faq-item.active .faq-question i { transform: rotate(180deg); }
.faq-answer { padding: 0 24px 18px; font-size: 0.92rem; color: var(--text-light); line-height: 1.7; display: none; }
.faq-item.active .faq-answer { display: block; }
/* CTA */
.cta-section { background: var(--primary); position: relative; overflow: hidden; text-align: center; }
.cta-section::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-3.png') center/cover no-repeat; opacity: 0.1; }
.cta-section .container { position: relative; z-index: 1; }
.cta-section h2 { font-size: 2rem; font-weight: 800; color: var(--text-white); margin-bottom: 14px; }
.cta-section p { font-size: 1.05rem; color: rgba(255,255,255,0.7); max-width: 520px; margin: 0 auto 32px; }
.cta-section .btn { font-size: 1.05rem; padding: 16px 40px; }
/* Footer */
.footer { background: var(--primary); padding: 48px 0 0; border-top: 1px solid rgba(255,255,255,0.06); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; }
.footer-brand .nav-brand { color: var(--text-white); margin-bottom: 12px; display: inline-block; }
.footer-brand p { font-size: 0.88rem; color: rgba(255,255,255,0.55); line-height: 1.7; max-width: 320px; }
.footer-col h4 { font-size: 0.95rem; font-weight: 700; color: var(--text-white); margin-bottom: 16px; }
.footer-col a { display: block; font-size: 0.88rem; color: rgba(255,255,255,0.55); padding: 4px 0; }
.footer-col a:hover { color: var(--accent); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); padding: 20px 0; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; font-size: 0.82rem; 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; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .hero { min-height: 460px; }
  .hero h1 { font-size: 2rem; }
  .hero p { font-size: 1rem; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .post-item { flex-direction: column; }
  .post-thumb { width: 100%; height: 180px; }
  .nav-links { display: none; position: absolute; top: var(--nav-h); left: 0; right: 0; background: var(--bg-white); flex-direction: column; padding: 20px 24px; gap: 16px; box-shadow: var(--shadow-lg); border-top: 1px solid var(--border); }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }
  .footer-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .stat-number { font-size: 2rem; }
  .section-title { font-size: 1.6rem; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .hero h1 { font-size: 1.7rem; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .stat-number { font-size: 1.7rem; }
  .header-top { font-size: 0.7rem; }
  .header-top .container { flex-direction: column; gap: 2px; }
  .cat-card { height: 160px; }
}

/* roulang page: article */
:root {
  --primary: #0f1b2d;
  --primary-light: #1a2d4a;
  --secondary: #d4a84b;
  --secondary-hover: #c49a3a;
  --accent: #e8b84c;
  --bg: #f8f9fc;
  --bg-card: #ffffff;
  --bg-dark: #0a1422;
  --text: #1a1a2e;
  --text-light: #6b7280;
  --text-white: #f0f2f5;
  --border: #e2e6ef;
  --radius: 14px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(0,0,0,0.06);
  --shadow-hover: 0 12px 40px rgba(0,0,0,0.10);
  --shadow-hero: 0 8px 32px rgba(0,0,0,0.30);
  --transition: 0.30s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  --max-width: 1200px;
  --content-width: 780px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); font-size: 16px; line-height: 1.7; color: var(--text); background: var(--bg); -webkit-font-smoothing: antialiased; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--secondary); }
img { max-width: 100%; height: auto; display: block; }
button, input, textarea { font-family: inherit; font-size: 1rem; outline: none; }
ul, ol { list-style: none; }
.container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.container--narrow { max-width: var(--content-width); }

/* Header & Nav */
.site-header { background: var(--primary); position: sticky; top: 0; z-index: 100; box-shadow: 0 2px 20px rgba(0,0,0,0.15); }
.top-bar { background: rgba(255,255,255,0.04); border-bottom: 1px solid rgba(255,255,255,0.06); padding: 6px 0; font-size: 0.80rem; color: rgba(255,255,255,0.6); }
.top-bar .container { display: flex; justify-content: space-between; align-items: center; }
.top-bar a { color: rgba(255,255,255,0.7); margin-left: 16px; font-size: 0.80rem; }
.top-bar a:hover { color: var(--secondary); }
.main-nav { padding: 0 0; }
.main-nav .container { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.nav-brand { display: flex; align-items: center; gap: 2px; font-size: 1.35rem; font-weight: 700; color: #fff; letter-spacing: -0.3px; }
.nav-brand span { color: var(--secondary); }
.nav-brand:hover { color: #fff; }
.nav-links { display: flex; align-items: center; gap: 8px; }
.nav-links li a { display: block; padding: 8px 16px; border-radius: var(--radius-sm); color: rgba(255,255,255,0.80); font-size: 0.92rem; font-weight: 500; transition: var(--transition); position: relative; }
.nav-links li a:hover { background: rgba(255,255,255,0.08); color: #fff; }
.nav-links li a.active { background: rgba(212,168,75,0.15); color: var(--secondary); }
.nav-links li a.nav-cta { background: var(--secondary); color: var(--primary); padding: 8px 20px; border-radius: 30px; font-weight: 600; }
.nav-links li a.nav-cta:hover { background: var(--secondary-hover); transform: translateY(-1px); box-shadow: 0 4px 14px rgba(212,168,75,0.3); }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span { width: 26px; height: 2.5px; background: #fff; border-radius: 4px; transition: var(--transition); }

/* Hero Article */
.article-hero { position: relative; padding: 80px 0 60px; background: var(--bg-dark); overflow: hidden; }
.article-hero .hero-bg { position: absolute; inset: 0; background: url('/assets/images/backpic/back-1.png') center/cover no-repeat; opacity: 0.25; }
.article-hero .hero-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(15,27,45,0.92) 0%, rgba(10,20,34,0.70) 100%); }
.article-hero .container { position: relative; z-index: 2; }
.article-hero .breadcrumb { font-size: 0.85rem; color: rgba(255,255,255,0.5); margin-bottom: 20px; display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.article-hero .breadcrumb a { color: rgba(255,255,255,0.6); }
.article-hero .breadcrumb a:hover { color: var(--secondary); }
.article-hero .breadcrumb span { color: rgba(255,255,255,0.3); }
.article-hero .post-category { display: inline-block; background: var(--secondary); color: var(--primary); padding: 4px 16px; border-radius: 30px; font-size: 0.80rem; font-weight: 600; margin-bottom: 16px; letter-spacing: 0.5px; }
.article-hero h1 { font-size: 2.6rem; font-weight: 800; color: #fff; line-height: 1.25; margin-bottom: 20px; max-width: 900px; letter-spacing: -0.5px; }
.article-hero .post-meta { display: flex; flex-wrap: wrap; gap: 20px; color: rgba(255,255,255,0.55); font-size: 0.88rem; }
.article-hero .post-meta i { margin-right: 6px; }
.article-hero .post-meta span { display: flex; align-items: center; }

/* Article Main */
.article-main { padding: 48px 0 60px; }
.article-body { background: var(--bg-card); border-radius: var(--radius-lg); box-shadow: var(--shadow); padding: 48px 56px; }
.post-content { font-size: 1.08rem; line-height: 1.9; color: var(--text); }
.post-content p { margin-bottom: 1.4em; }
.post-content h2 { font-size: 1.7rem; font-weight: 700; margin: 2em 0 0.8em; color: var(--primary); line-height: 1.3; }
.post-content h3 { font-size: 1.35rem; font-weight: 600; margin: 1.8em 0 0.6em; color: var(--primary); }
.post-content h4 { font-size: 1.15rem; font-weight: 600; margin: 1.4em 0 0.4em; }
.post-content img { border-radius: var(--radius); margin: 1.6em 0; box-shadow: var(--shadow); }
.post-content blockquote { border-left: 4px solid var(--secondary); background: #f8f4ec; padding: 20px 28px; margin: 1.6em 0; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; font-style: italic; color: #4a4a5a; }
.post-content ul, .post-content ol { margin: 1.2em 0; padding-left: 1.8em; }
.post-content ul li { list-style: disc; margin-bottom: 0.4em; }
.post-content ol li { list-style: decimal; margin-bottom: 0.4em; }
.post-content a { color: var(--secondary); text-decoration: underline; text-underline-offset: 3px; }
.post-content a:hover { color: var(--secondary-hover); }
.post-content table { width: 100%; border-collapse: collapse; margin: 1.6em 0; border-radius: var(--radius-sm); overflow: hidden; }
.post-content th, .post-content td { padding: 12px 18px; border: 1px solid var(--border); text-align: left; }
.post-content th { background: var(--primary); color: #fff; font-weight: 600; }
.post-content td { background: #fff; }
.post-content code { background: #f1f3f5; padding: 2px 8px; border-radius: 4px; font-size: 0.90em; }
.post-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 36px; padding-top: 28px; border-top: 1px solid var(--border); }
.post-tags .tag { background: var(--bg); padding: 6px 18px; border-radius: 30px; font-size: 0.82rem; color: var(--text-light); border: 1px solid var(--border); transition: var(--transition); }
.post-tags .tag:hover { background: var(--secondary); color: var(--primary); border-color: var(--secondary); }

/* Error State */
.article-error { text-align: center; padding: 80px 20px; background: var(--bg-card); border-radius: var(--radius-lg); box-shadow: var(--shadow); }
.article-error .error-icon { font-size: 4rem; color: var(--text-light); margin-bottom: 20px; }
.article-error h2 { font-size: 1.8rem; color: var(--primary); margin-bottom: 12px; }
.article-error p { color: var(--text-light); margin-bottom: 28px; font-size: 1.05rem; }
.article-error .btn-back { display: inline-flex; align-items: center; gap: 8px; background: var(--primary); color: #fff; padding: 14px 32px; border-radius: 30px; font-weight: 600; transition: var(--transition); }
.article-error .btn-back:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: var(--shadow-hover); }

/* Related Posts */
.related-section { padding: 60px 0; background: var(--bg); }
.related-section .section-title { font-size: 1.6rem; font-weight: 700; color: var(--primary); margin-bottom: 32px; text-align: center; }
.related-section .section-title span { color: var(--secondary); }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.related-card { background: var(--bg-card); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: var(--transition); }
.related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.related-card .card-img { height: 180px; overflow: hidden; }
.related-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.related-card:hover .card-img img { transform: scale(1.05); }
.related-card .card-body { padding: 20px; }
.related-card .card-body .card-cat { font-size: 0.75rem; color: var(--secondary); font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 6px; }
.related-card .card-body h3 { font-size: 1.05rem; 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(--secondary); }
.related-card .card-body .card-date { font-size: 0.80rem; color: var(--text-light); }

/* CTA */
.cta-section { padding: 64px 0; background: var(--primary); position: relative; overflow: hidden; }
.cta-section::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center/cover no-repeat; opacity: 0.06; }
.cta-section .container { position: relative; z-index: 2; text-align: center; }
.cta-section h2 { font-size: 1.9rem; font-weight: 700; color: #fff; margin-bottom: 12px; }
.cta-section p { color: rgba(255,255,255,0.7); max-width: 580px; margin: 0 auto 28px; font-size: 1.05rem; }
.cta-section .cta-form { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; max-width: 520px; margin: 0 auto; }
.cta-section .cta-form input { flex: 1; min-width: 200px; padding: 14px 20px; border-radius: 30px; border: none; background: rgba(255,255,255,0.10); color: #fff; font-size: 0.95rem; backdrop-filter: blur(4px); }
.cta-section .cta-form input::placeholder { color: rgba(255,255,255,0.4); }
.cta-section .cta-form button { background: var(--secondary); color: var(--primary); padding: 14px 32px; border-radius: 30px; border: none; font-weight: 600; cursor: pointer; transition: var(--transition); }
.cta-section .cta-form button:hover { background: var(--secondary-hover); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(212,168,75,0.3); }

/* Footer */
.footer { background: #0a1422; color: rgba(255,255,255,0.7); padding: 56px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.06); }
.footer-brand .nav-brand { font-size: 1.3rem; margin-bottom: 14px; }
.footer-brand p { font-size: 0.90rem; line-height: 1.7; color: rgba(255,255,255,0.5); max-width: 360px; }
.footer-col h4 { font-size: 0.95rem; font-weight: 600; color: #fff; margin-bottom: 16px; letter-spacing: 0.3px; }
.footer-col a { display: block; padding: 5px 0; font-size: 0.88rem; color: rgba(255,255,255,0.5); transition: var(--transition); }
.footer-col a:hover { color: var(--secondary); padding-left: 4px; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; padding: 20px 0; font-size: 0.82rem; color: rgba(255,255,255,0.35); }

/* Responsive */
@media (max-width: 1024px) {
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .article-hero h1 { font-size: 2.1rem; }
}
@media (max-width: 768px) {
  .nav-links { display: none; position: absolute; top: 64px; left: 0; right: 0; background: var(--primary); flex-direction: column; padding: 16px 24px; box-shadow: 0 20px 40px rgba(0,0,0,0.3); border-radius: 0 0 var(--radius) var(--radius); }
  .nav-links.open { display: flex; }
  .nav-links li a { padding: 12px 16px; font-size: 1rem; }
  .nav-toggle { display: flex; }
  .article-hero h1 { font-size: 1.7rem; }
  .article-hero { padding: 48px 0 40px; }
  .article-body { padding: 28px 20px; border-radius: var(--radius); }
  .post-content { font-size: 1rem; }
  .related-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .cta-section h2 { font-size: 1.4rem; }
  .top-bar { display: none; }
  .main-nav .container { height: 56px; }
}
@media (max-width: 520px) {
  .article-hero h1 { font-size: 1.4rem; }
  .article-body { padding: 20px 16px; }
  .post-content h2 { font-size: 1.3rem; }
  .related-card .card-img { height: 140px; }
  .cta-section .cta-form input { min-width: 100%; }
  .cta-section .cta-form button { width: 100%; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 420px) {
  .nav-brand { font-size: 1.1rem; }
  .container { padding: 0 16px; }
}

/* roulang page: category1 */
/* ===== Design Variables ===== */
:root {
  --primary: #0f1b4d;
  --primary-light: #1a2a6c;
  --primary-dark: #0a0f2e;
  --accent: #e85d04;
  --accent-light: #f37a1f;
  --accent-dark: #c04d00;
  --bg: #f4f5f9;
  --bg-white: #ffffff;
  --bg-card: #ffffff;
  --text: #1a1a2e;
  --text-light: #4a4a6a;
  --text-muted: #8a8aaa;
  --border: #e2e4ed;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow: 0 8px 30px rgba(0,0,0,0.08);
  --shadow-lg: 0 20px 50px rgba(0,0,0,0.12);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', 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(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-dark); }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
img { max-width: 100%; height: auto; display: block; }
button, input, textarea { font-family: inherit; font-size: inherit; }
button { cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.25; color: var(--primary); font-weight: 700; }

/* ===== Container ===== */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}
@media (max-width: 768px) {
  .container { padding: 0 16px; }
}

/* ===== Navigation ===== */
.main-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-h);
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  transition: box-shadow var(--transition);
}
.main-nav.scrolled { box-shadow: 0 4px 20px rgba(0,0,0,0.08); }
.main-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 2px;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.3px;
  white-space: nowrap;
}
.nav-brand span { color: var(--accent); }
.nav-brand:hover { color: var(--primary); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-links li a {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: 40px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-light);
  transition: all var(--transition);
  position: relative;
}
.nav-links li a:hover { color: var(--accent); background: rgba(232,93,4,0.06); }
.nav-links li a.active {
  color: var(--accent);
  background: rgba(232,93,4,0.10);
  font-weight: 600;
}
.nav-links li a.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 3px;
  border-radius: 2px;
  background: var(--accent);
}
.nav-links li a.nav-cta {
  background: var(--accent);
  color: #fff;
  padding: 8px 22px;
  font-weight: 600;
  border-radius: 40px;
  box-shadow: 0 4px 12px rgba(232,93,4,0.25);
}
.nav-links li a.nav-cta:hover {
  background: var(--accent-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(232,93,4,0.35);
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border-radius: 8px;
  background: var(--bg);
}
.nav-toggle span {
  display: block;
  width: 26px;
  height: 2.5px;
  background: var(--primary);
  border-radius: 2px;
  transition: all var(--transition);
}
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

@media (max-width: 1024px) {
  .nav-links { gap: 4px; }
  .nav-links li a { padding: 6px 14px; font-size: 0.85rem; }
}
@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: var(--header-h);
    left: 0;
    width: 100%;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(16px);
    flex-direction: column;
    padding: 16px 24px 24px;
    gap: 8px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-120%);
    opacity: 0;
    transition: all var(--transition);
    pointer-events: none;
    box-shadow: 0 20px 40px rgba(0,0,0,0.08);
  }
  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }
  .nav-links li a { width: 100%; justify-content: center; padding: 12px 18px; font-size: 1rem; }
  .nav-links li a.active::after { display: none; }
  .nav-links li a.nav-cta { margin-top: 4px; }
  .nav-toggle { display: flex; }
}

/* ===== Page Header / Banner ===== */
.page-banner {
  margin-top: var(--header-h);
  position: relative;
  padding: 80px 0 60px;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
  overflow: hidden;
  min-height: 260px;
  display: flex;
  align-items: center;
}
.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-1.png') center / cover no-repeat;
  opacity: 0.15;
  mix-blend-mode: overlay;
}
.page-banner .container { position: relative; z-index: 2; }
.page-banner h1 {
  font-size: 2.8rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
  letter-spacing: -0.5px;
  line-height: 1.15;
}
.page-banner h1 span { color: var(--accent); }
.page-banner p {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.8);
  max-width: 600px;
  line-height: 1.7;
}
.page-banner .banner-meta {
  display: flex;
  gap: 24px;
  margin-top: 20px;
  flex-wrap: wrap;
}
.page-banner .banner-meta span {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.7);
  font-size: 0.95rem;
}
.page-banner .banner-meta i { color: var(--accent); }
@media (max-width: 768px) {
  .page-banner { padding: 60px 0 40px; min-height: 200px; }
  .page-banner h1 { font-size: 2rem; }
  .page-banner p { font-size: 1rem; }
  .page-banner .banner-meta { gap: 16px; }
}

/* ===== Section Common ===== */
.section { padding: 70px 0; }
.section-title {
  text-align: center;
  margin-bottom: 48px;
}
.section-title h2 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 10px;
}
.section-title h2 i { color: var(--accent); margin-right: 8px; }
.section-title p {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 540px;
  margin: 0 auto;
}
@media (max-width: 768px) {
  .section { padding: 48px 0; }
  .section-title { margin-bottom: 32px; }
  .section-title h2 { font-size: 1.6rem; }
}

/* ===== Tags / Filters ===== */
.tags-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 40px;
}
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 22px;
  border-radius: 40px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-light);
  background: var(--bg-white);
  border: 1px solid var(--border);
  transition: all var(--transition);
  cursor: pointer;
}
.tag:hover { border-color: var(--accent); color: var(--accent); background: rgba(232,93,4,0.04); }
.tag.active { background: var(--accent); color: #fff; border-color: var(--accent); box-shadow: 0 4px 12px rgba(232,93,4,0.25); }
.tag i { font-size: 0.85rem; }

/* ===== Card Grid ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
@media (max-width: 1024px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
}
@media (max-width: 640px) {
  .card-grid { grid-template-columns: 1fr; gap: 18px; }
}

/* ===== News Card ===== */
.news-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
}
.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: transparent;
}
.news-card .card-img {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--primary-dark);
}
.news-card .card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.news-card:hover .card-img img { transform: scale(1.05); }
.news-card .card-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  box-shadow: 0 2px 10px rgba(232,93,4,0.3);
}
.news-card .card-body { padding: 20px 22px 22px; flex: 1; display: flex; flex-direction: column; }
.news-card .card-body h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-card .card-body h3 a { color: inherit; }
.news-card .card-body h3 a:hover { color: var(--accent); }
.news-card .card-body p {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.6;
  margin-bottom: 14px;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-card .card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  font-size: 0.82rem;
  color: var(--text-muted);
}
.news-card .card-footer span { display: flex; align-items: center; gap: 6px; }
.news-card .card-footer i { color: var(--accent); font-size: 0.75rem; }

/* ===== Hot Ranking ===== */
.rank-list { max-width: 800px; margin: 0 auto; }
.rank-item {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 18px 22px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: all var(--transition);
  cursor: pointer;
}
.rank-item:hover { transform: translateX(4px); border-color: var(--accent); box-shadow: var(--shadow); }
.rank-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1rem;
  background: var(--bg);
  color: var(--text-muted);
  flex-shrink: 0;
}
.rank-item:nth-child(1) .rank-num { background: var(--accent); color: #fff; }
.rank-item:nth-child(2) .rank-num { background: #f0a500; color: #fff; }
.rank-item:nth-child(3) .rank-num { background: #6b7280; color: #fff; }
.rank-info { flex: 1; }
.rank-info h4 { font-size: 1rem; font-weight: 600; color: var(--primary); margin-bottom: 2px; }
.rank-info p { font-size: 0.85rem; color: var(--text-muted); }
.rank-meta {
  font-size: 0.82rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.rank-meta i { color: var(--accent); }
@media (max-width: 640px) {
  .rank-item { padding: 14px 16px; gap: 12px; flex-wrap: wrap; }
  .rank-meta { width: 100%; padding-left: 54px; justify-content: flex-start; }
}

/* ===== Stats ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 32px 20px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.stat-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--accent); }
.stat-card .stat-num {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.2;
  margin-bottom: 6px;
}
.stat-card .stat-label { font-size: 0.95rem; color: var(--text-muted); font-weight: 500; }
.stat-card .stat-icon { font-size: 1.6rem; color: var(--primary-light); margin-bottom: 12px; opacity: 0.6; }
@media (max-width: 1024px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
}
@media (max-width: 520px) {
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .stat-card { padding: 22px 12px; }
  .stat-card .stat-num { font-size: 1.8rem; }
}

/* ===== Schedule / Timeline ===== */
.schedule-list { max-width: 800px; margin: 0 auto; }
.schedule-item {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 20px 24px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.schedule-item:hover { border-color: var(--accent); box-shadow: var(--shadow); }
.schedule-date {
  text-align: center;
  flex-shrink: 0;
  min-width: 60px;
}
.schedule-date .day { font-size: 1.6rem; font-weight: 800; color: var(--accent); line-height: 1.1; }
.schedule-date .month { font-size: 0.8rem; color: var(--text-muted); text-transform: uppercase; }
.schedule-info { flex: 1; }
.schedule-info h4 { font-size: 1rem; font-weight: 600; color: var(--primary); margin-bottom: 2px; }
.schedule-info p { font-size: 0.85rem; color: var(--text-muted); }
.schedule-badge {
  padding: 6px 18px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  background: rgba(232,93,4,0.08);
  color: var(--accent);
  flex-shrink: 0;
}
.schedule-badge.upcoming { background: rgba(15,27,77,0.06); color: var(--primary); }
@media (max-width: 640px) {
  .schedule-item { flex-wrap: wrap; gap: 12px; padding: 16px; }
  .schedule-date { min-width: 50px; }
  .schedule-date .day { font-size: 1.3rem; }
  .schedule-badge { margin-left: auto; }
}

/* ===== FAQ ===== */
.faq-list { max-width: 760px; margin: 0 auto; }
.faq-item {
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: all var(--transition);
}
.faq-item:hover { border-color: var(--accent); }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--primary);
  cursor: pointer;
  gap: 16px;
  transition: background var(--transition);
}
.faq-question:hover { background: rgba(232,93,4,0.03); }
.faq-question i { color: var(--accent); transition: transform var(--transition); font-size: 0.9rem; flex-shrink: 0; }
.faq-item.open .faq-question i { transform: rotate(180deg); }
.faq-answer {
  padding: 0 24px 18px;
  font-size: 0.92rem;
  color: var(--text-light);
  line-height: 1.7;
  display: none;
}
.faq-item.open .faq-answer { display: block; }

/* ===== CTA ===== */
.cta-section {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  padding: 70px 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 / cover no-repeat;
  opacity: 0.08;
  mix-blend-mode: overlay;
}
.cta-section .container { position: relative; z-index: 2; }
.cta-section h2 {
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
}
.cta-section p {
  color: rgba(255,255,255,0.75);
  font-size: 1.05rem;
  max-width: 500px;
  margin: 0 auto 28px;
}
.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 38px;
  border-radius: 40px;
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  transition: all var(--transition);
  box-shadow: 0 6px 24px rgba(232,93,4,0.35);
}
.cta-btn:hover { background: var(--accent-light); color: #fff; transform: translateY(-2px); box-shadow: 0 10px 32px rgba(232,93,4,0.45); }
.cta-btn i { font-size: 0.95rem; }
@media (max-width: 768px) {
  .cta-section { padding: 48px 0; }
  .cta-section h2 { font-size: 1.5rem; }
}

/* ===== Footer ===== */
.footer {
  background: var(--primary-dark);
  color: rgba(255,255,255,0.7);
  padding: 56px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.footer-brand .nav-brand { color: #fff; margin-bottom: 14px; display: inline-flex; }
.footer-brand .nav-brand span { color: var(--accent); }
.footer-brand p { font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.55); margin-top: 8px; max-width: 320px; }
.footer-col h4 { font-size: 1rem; font-weight: 700; color: #fff; margin-bottom: 18px; }
.footer-col a {
  display: block;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.55);
  padding: 5px 0;
  transition: all var(--transition);
}
.footer-col a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.35);
  flex-wrap: wrap;
  gap: 8px;
}
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 640px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* ===== Back to Top ===== */
.back-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  box-shadow: 0 4px 16px rgba(232,93,4,0.3);
  z-index: 999;
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition);
  pointer-events: none;
}
.back-top.visible { opacity: 1; transform: translateY(0); pointer-events: all; }
.back-top:hover { background: var(--accent-dark); transform: translateY(-2px); box-shadow: 0 6px 24px rgba(232,93,4,0.4); }

/* ===== Utility ===== */
.text-center { text-align: center; }
.mt-20 { margin-top: 20px; }
.mb-20 { margin-bottom: 20px; }
.gap-12 { gap: 12px; }
.flex-center { display: flex; align-items: center; justify-content: center; }