/* Trang con (thanh toán, chính sách, bài hỏi đáp, giới thiệu…). Nạp SAU css/style.css — dùng lại
   token màu, .btn, .field, .form-msg, .store-badges của trang chủ. */

/* ---------- Dải tiêu đề trang ---------- */
.page-hero { background: var(--ads-blue, var(--navy-900)); color: #fff; padding: 28px 0 32px; }
@media (min-width: 900px) { .page-hero { padding: 44px 0 48px; } }
.page-hero h1 { font-size: clamp(26px, 4vw, 42px); font-weight: 800; line-height: 1.2; letter-spacing: -0.01em; }
.page-hero .page-lead { margin-top: 12px; font-size: 17px; color: var(--on-dark); max-width: 760px; }
.page-meta { margin-top: 12px; font-size: 14px; color: var(--on-dark); }

.breadcrumb { list-style: none; margin: 0 0 14px; padding: 0; display: flex; flex-wrap: wrap; gap: 4px 8px; font-size: 14px; color: var(--on-dark); }
.breadcrumb li { display: inline-flex; align-items: center; gap: 8px; }
.breadcrumb li + li::before { content: "›"; color: var(--on-dark); }
.breadcrumb a { color: #fff; text-underline-offset: 3px; }

/* ---------- Bố cục nội dung ---------- */
.page-body { padding: 32px 0 56px; }
@media (min-width: 900px) { .page-body { padding: 48px 0 88px; } }
.page-grid { display: grid; gap: 32px; }
@media (min-width: 1000px) {
  .page-grid { grid-template-columns: minmax(0, 1fr) 340px; gap: 48px; align-items: start; }
  .page-aside { position: sticky; top: 96px; }
}
.narrow { max-width: 820px; }

.card { background: #fff; border: 1px solid var(--card-border); border-radius: 14px; padding: 24px; }
@media (min-width: 900px) { .card { padding: 28px; } }
.card-alt { background: var(--surface); border-color: var(--surface); }
.card h2, .card h3 { font-size: 20px; font-weight: 800; margin-bottom: 12px; }

/* ---------- Văn bản dài (chính sách, bài viết) ---------- */
.prose { font-size: 17px; line-height: 1.75; color: #232b45; }
.prose > * + * { margin-top: 16px; }
.prose h2 { font-size: clamp(22px, 2.6vw, 28px); font-weight: 800; line-height: 1.3; margin-top: 40px; color: var(--ink); }
.prose h3 { font-size: 20px; font-weight: 700; line-height: 1.35; margin-top: 28px; color: var(--ink); }
.prose h2:first-child, .prose h3:first-child { margin-top: 0; }
.prose ul, .prose ol { padding-left: 24px; }
.prose li + li { margin-top: 6px; }
.prose a { font-weight: 600; text-underline-offset: 3px; }
.prose strong { color: var(--ink); }
.prose img { display: block; height: auto; border-radius: 12px; border: 1px solid var(--card-border); }
.prose figure { margin: 24px 0; }
.prose figcaption { margin-top: 8px; font-size: 14px; color: var(--muted); text-align: center; }
.prose table { width: 100%; border-collapse: collapse; font-size: 16px; }
.prose th, .prose td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); vertical-align: top; }
.prose th { background: var(--surface); font-weight: 700; }
.table-wrap { overflow-x: auto; }
.prose hr { border: 0; border-top: 1px solid var(--border); margin: 32px 0; }

.callout { display: flex; gap: 12px; padding: 16px 18px; border-radius: 12px; background: #fff7e0; border: 1px solid #f0d68a; color: #4a3500; font-size: 16px; line-height: 1.6; }
.callout .ic { color: #8a5a00; margin-top: 3px; }
.callout-info { background: #e8eeff; border-color: #c3d0f7; color: #1f2d6b; }
.callout-info .ic { color: var(--blue); }

/* Mục lục */
.toc { font-size: 15px; }
.toc b { display: block; margin-bottom: 8px; font-size: 13px; letter-spacing: 0.08em; color: var(--muted); }
.toc ol, .toc ul { margin: 0; padding-left: 20px; }
.toc li + li { margin-top: 6px; }
.toc a { text-decoration: none; }
.toc a:hover { text-decoration: underline; }

/* Danh sách bài */
.article-list { display: grid; gap: 16px; }
@media (min-width: 700px) { .article-list { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.article-card { display: flex; flex-direction: column; gap: 8px; padding: 22px; border-radius: 14px; border: 1px solid var(--card-border); background: #fff; text-decoration: none; color: var(--ink); }
.article-card:hover { border-color: var(--navy-900); color: var(--ink); }
.article-card h3 { font-size: 19px; font-weight: 700; }
.article-card p { font-size: 15px; color: var(--body); }
.article-card .more { margin-top: auto; font-weight: 700; color: var(--blue); }

/* Hỏi đáp gập/mở */
.faq details { border-bottom: 1px solid var(--border); padding: 4px 0; }
.faq summary { cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 12px; align-items: center; min-height: 48px; font-weight: 700; font-size: 17px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-size: 24px; color: var(--blue); flex-shrink: 0; }
.faq details[open] summary::after { content: "−"; }
.faq details > div { padding: 0 0 16px; color: var(--body); }

/* Khối CTA cuối trang con */
.page-cta { background: var(--ads-ink, var(--navy-900)); color: #fff; border-radius: var(--radius-lg); padding: 28px 24px; display: flex; flex-direction: column; gap: 14px; align-items: flex-start; }
.page-cta h2 { font-size: 24px; font-weight: 800; }
.page-cta p { color: var(--on-dark); }

/* Dòng tóm tắt đơn hàng (thanh toán) */
.summary-row { display: flex; justify-content: space-between; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--row-line); font-size: 16px; }
.summary-row:last-of-type { border-bottom: 0; }
.summary-row span:last-child { font-weight: 700; text-align: right; }
.summary-total { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; padding-top: 14px; margin-top: 4px; border-top: 2px solid var(--ink); }
.summary-total span:first-child { font-weight: 700; }
.summary-total span:last-child { font-size: 26px; font-weight: 800; }
.hint { font-size: 14px; color: var(--muted); line-height: 1.5; }
.form-actions { display: flex; align-items: stretch; gap: 12px; flex-wrap: wrap; }
.form-actions .btn { flex: 1 1 200px; }

.contact-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 16px; }
.contact-list li { display: flex; gap: 12px; align-items: flex-start; }
.contact-list .ic { color: var(--blue); margin-top: 4px; }