/* Static SEO page styles — minimal, fast, matches main site visual language */
:root {
  --primary: #e67e22;
  --primary-dark: #b8631a;
  --primary-soft: #fdf2e9;
  --accent: #EAB308;
  --success: #16A34A;
  --danger: #DC2626;
  --ink: #0F172A;
  --ink-2: #334155;
  --muted: #64748B;
  --line: #E2E8F0;
  --bg: #F8FAFB;
  --surface: #FFFFFF;
  --surface-2: #F1F5F9;
  --radius: 12px;
  --radius-lg: 18px;
  --shadow: 0 4px 16px rgba(15, 23, 42, 0.08);
  --font: 'Be Vietnam Pro', system-ui, -apple-system, sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; overflow-x: clip; }
body { font-family: var(--font); color: var(--ink); background: var(--bg); line-height: 1.6; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); text-decoration: underline; }
.container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }

/* Header */
.s-header { background: #fff; border-bottom: 1px solid var(--line); padding: 14px 0; position: sticky; top: 0; z-index: 100; box-shadow: 0 1px 4px rgba(0,0,0,0.04); }
.s-header-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.s-logo { display: flex; align-items: center; gap: 8px; }
.s-logo img { height: 48px; width: auto; }
.s-nav { display: flex; gap: 24px; align-items: center; flex-wrap: wrap; }
.s-nav a { color: var(--ink-2); font-weight: 600; font-size: 14px; }
.s-nav a:hover { color: var(--primary); text-decoration: none; }
.s-cta { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.s-cta-call { display: inline-flex; align-items: center; gap: 8px; padding: 10px 18px; background: var(--primary); color: #fff; border-radius: 10px; font-weight: 700; }
.s-cta-call:hover { background: var(--primary-dark); color: #fff; text-decoration: none; }
.s-cta-zalo { display: inline-flex; align-items: center; gap: 8px; padding: 10px 18px; background: #0068FF; color: #fff; border-radius: 10px; font-weight: 700; }
.s-cta-zalo:hover { background: #0056d6; color: #fff; text-decoration: none; }

/* Breadcrumb */
.s-breadcrumb { background: var(--surface-2); padding: 12px 0; font-size: 13px; color: var(--muted); }
.s-breadcrumb a { color: var(--muted); }
.s-breadcrumb .sep { margin: 0 6px; }

/* Main / content */
.s-main { padding: 24px 0 48px; }

/* Product detail */
.s-product { display: grid; grid-template-columns: 1fr 1.2fr; gap: 40px; padding-top: 24px; }
.s-product > * { min-width: 0; }
.s-product-img-wrap { background: #fff; border-radius: var(--radius-lg); padding: 24px; border: 1px solid var(--line); aspect-ratio: 1; display: grid; place-items: center; overflow: hidden; }
.s-product-img-wrap img { width: 100%; max-width: 360px; height: auto; aspect-ratio: 1/1; object-fit: contain; }
.s-product-info { display: flex; flex-direction: column; gap: 14px; }
.s-brand-pill { display: inline-block; background: var(--primary-soft); color: var(--primary); padding: 4px 12px; border-radius: 999px; font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; width: fit-content; }
.s-product h1 { font-size: 28px; line-height: 1.25; margin: 0; overflow-wrap: anywhere; }
.s-meta { display: flex; gap: 12px; font-size: 13px; color: var(--muted); flex-wrap: wrap; }
.s-meta .stock { color: var(--success); font-weight: 600; }
.s-price { background: var(--primary-soft); padding: 16px 20px; border-radius: 12px; display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.s-price strong { font-size: 30px; color: var(--primary); font-weight: 700; }
.s-price s { color: var(--muted); }
.s-save { background: var(--danger); color: #fff; padding: 3px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.s-points { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 8px; font-size: 14px; color: var(--ink-2); }
.s-points li { display: flex; align-items: center; gap: 10px; }
.s-points li::before { content: '✓'; color: var(--success); font-weight: 700; }
.s-buy { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 8px; }
.s-buy a { padding: 14px 22px; border-radius: 10px; font-weight: 700; font-size: 15px; display: inline-flex; align-items: center; gap: 8px; }
.s-buy-primary { background: var(--primary); color: #fff; }
.s-buy-primary:hover { background: var(--primary-dark); color: #fff; text-decoration: none; }
.s-buy-outline { background: #fff; color: var(--ink); border: 2px solid var(--line); }
.s-buy-outline:hover { border-color: var(--primary); color: var(--primary); text-decoration: none; }

.s-content-block { margin-top: 32px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 24px; }
.s-content-block h2 { font-size: 20px; margin: 0 0 12px; color: var(--ink); }
.s-content-block ul { padding-left: 20px; color: var(--ink-2); }
.s-content-block p { color: var(--ink-2); }

.s-spec { width: 100%; border-collapse: collapse; font-size: 14px; }
.s-spec th { text-align: left; padding: 10px 14px; background: var(--surface-2); font-weight: 600; width: 36%; }
.s-spec td { padding: 10px 14px; border-bottom: 1px solid var(--line); }

/* Related */
.s-related { margin-top: 40px; }
.s-related h2 { font-size: 22px; margin-bottom: 16px; }
.s-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.s-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: transform 0.15s, box-shadow 0.15s; }
.s-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.s-card a { display: block; color: inherit; }
.s-card a:hover { text-decoration: none; color: inherit; }
.s-card-img { aspect-ratio: 1; display: grid; place-items: center; padding: 12px; background: linear-gradient(180deg, var(--surface-2), #fff); }
.s-card-img img { max-width: 100%; max-height: 100%; object-fit: contain; }
.s-card-body { padding: 12px 14px 16px; }
.s-card-body h3 { font-size: 14px; margin: 0 0 6px; line-height: 1.35; min-height: 38px; }
.s-card-body .price { color: var(--primary); font-weight: 700; font-size: 16px; }

/* Article */
.s-article { background: #fff; border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--line); }
.s-article-hero { aspect-ratio: 2/1; background: var(--surface-2); }
.s-article-hero img { width: 100%; height: 100%; object-fit: cover; }
.s-article-body { padding: 32px; }
.s-article-body h1 { font-size: 28px; line-height: 1.25; margin: 0 0 12px; }
.s-article-meta { display: flex; gap: 16px; font-size: 13px; color: var(--muted); margin-bottom: 16px; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.s-article-body p { font-size: 16px; line-height: 1.7; color: var(--ink-2); margin: 0 0 14px; }
.s-article-body h2 { font-size: 22px; margin: 24px 0 10px; color: var(--ink); }
.s-article-body h3 { font-size: 18px; margin: 18px 0 8px; color: var(--ink); }

/* List pages */
.s-list-hero { background: linear-gradient(135deg, var(--primary-soft), #fff); padding: 40px 0; border-bottom: 1px solid var(--line); }
.s-list-hero h1 { font-size: 32px; margin: 0 0 8px; }
.s-list-hero p { color: var(--ink-2); margin: 0; font-size: 16px; max-width: 720px; }

/* Footer */
.s-footer { background: #0F172A; color: #cbd5e1; padding: 36px 0 20px; margin-top: 60px; font-size: 14px; }
.s-footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 32px; padding-bottom: 24px; border-bottom: 1px solid rgba(255,255,255,0.1); }
.s-footer h4 { color: #fff; margin: 0 0 12px; font-size: 15px; }
.s-footer a { color: #cbd5e1; display: block; padding: 4px 0; }
.s-footer a:hover { color: #fff; text-decoration: none; }
.s-footer p { margin: 4px 0; }
.s-footer-bottom { padding-top: 16px; text-align: center; color: #94a3b8; font-size: 13px; }

/* Floating CTA */
.s-float { position: fixed; right: 16px; bottom: 16px; z-index: 999; display: flex; flex-direction: column; gap: 10px; }
.s-float a { width: 56px; height: 56px; border-radius: 50%; display: grid; place-items: center; color: #fff; box-shadow: 0 6px 16px rgba(0,0,0,0.2); }
.s-float-call { background: var(--success); }
.s-float-zalo { background: #0068FF; }

/* Promo banner */
.s-promo { background: linear-gradient(135deg, var(--primary), #f97316); color: #fff; padding: 28px; border-radius: var(--radius-lg); margin-top: 32px; }
.s-promo h2 { color: #fff; margin: 0 0 8px; font-size: 24px; }
.s-promo p { margin: 0 0 16px; opacity: 0.95; }
.s-promo a { background: #fff; color: var(--primary); padding: 12px 22px; border-radius: 10px; font-weight: 700; display: inline-block; }

@media (max-width: 860px) {
  .s-product { grid-template-columns: 1fr; gap: 20px; }
  .s-product h1 { font-size: 22px; }
  .s-grid { grid-template-columns: repeat(2, 1fr); }
  .s-footer-grid { grid-template-columns: 1fr; gap: 20px; }
  .s-nav { display: none; }
  .s-article-body { padding: 20px; }
}
@media (max-width: 480px) {
  .container { padding: 0 14px; }
  .s-product-img-wrap { padding: 16px; }
  .s-list-hero h1 { font-size: 24px; }
}