/* ═══════════════════════════════════════════════════════════════════════════
   public/assets/css/guest-hub.css — TRANG BÁN bốn mảng học cho khách (đợt 2 · 23/09/2026).
   Dùng token --gs-* của guest-shell.css (nạp trước). Không hex cứng.
   ═══════════════════════════════════════════════════════════════════════════ */
.gh { font-family: var(--gs-font); color: var(--gs-text); }
.gh-wrap { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
.gh h1, .gh h2 { color: var(--gs-ink); margin: 0; letter-spacing: -.02em; text-wrap: balance; }

/* ── Mở đầu ── */
.gh-hero {
  position: relative; isolation: isolate; color: var(--gs-on); overflow: hidden;
  background: radial-gradient(70% 90% at 100% 0%, color-mix(in srgb, var(--color-primary) 36%, transparent), transparent 70%),
              linear-gradient(160deg, var(--gs-deep-ink), color-mix(in srgb, var(--color-primary-hover) 44%, black));
}
.gh-hero::before {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none; opacity: .5;
  background-image: radial-gradient(circle at 1px 1px, color-mix(in srgb, var(--color-on-dark) 14%, transparent) 1px, transparent 1.4px);
  background-size: 18px 18px; -webkit-mask-image: linear-gradient(210deg, black 10%, transparent 70%); mask-image: linear-gradient(210deg, black 10%, transparent 70%);
}
.gh-hero__in { padding: 62px 24px 54px; display: grid; gap: 16px; }
.gh-hero h1 { max-width: 20ch; font-size: clamp(30px, 4.4vw, 46px); font-weight: 800; line-height: 1.1; color: var(--gs-on); }
.gh-hero__lead { margin: 0; max-width: 62ch; font-size: 17px; line-height: 1.65; color: color-mix(in srgb, var(--color-on-dark) 82%, transparent); }
.gh-hero__act { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 6px; }
.gh-hero__act .gs-btn { height: 50px; padding: 0 24px; font-size: 15px; }
.gh-hero__act .gs-btn--outline { background: color-mix(in srgb, var(--color-on-dark) 14%, transparent); color: var(--gs-on); border-color: color-mix(in srgb, var(--color-on-dark) 26%, transparent); }
.gh-hero__act .gs-btn--outline:hover { background: color-mix(in srgb, var(--color-on-dark) 22%, transparent); color: var(--gs-on); }
.gh-stats { display: flex; flex-wrap: wrap; gap: 12px 34px; margin-top: 12px; }
.gh-stat { display: grid; gap: 2px; }
.gh-stat b { font-size: 26px; font-weight: 800; letter-spacing: -.02em; color: var(--gs-on); font-variant-numeric: tabular-nums; }
.gh-stat span { font-size: 13.5px; color: color-mix(in srgb, var(--color-on-dark) 74%, transparent); }

/* ── Mục ── */
.gh-sec { padding: 46px 24px 0; display: grid; gap: 14px; }
.gh-sec:last-of-type { padding-bottom: 56px; }
.gh-sec h2 { font-size: clamp(21px, 2.6vw, 27px); font-weight: 750; }
.gh-sec__lead { margin: -4px 0 2px; max-width: 64ch; font-size: 15.5px; line-height: 1.6; color: var(--gs-muted); }

.gh-grid { display: grid; gap: 14px; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.gh-card {
  display: grid; gap: 6px; align-content: start; padding: 18px 20px 16px; border-radius: 16px;
  background: var(--gs-surface); border: 1px solid var(--gs-hair); box-shadow: var(--gs-sh-1); text-decoration: none;
  transition: border-color var(--gs-dur) var(--gs-ease), box-shadow var(--gs-dur) var(--gs-ease);
}
.gh-card:hover { border-color: color-mix(in srgb, var(--color-primary) 38%, var(--gs-border)); box-shadow: var(--gs-sh-2); text-decoration: none; }
.gh-card b { font-size: 16.5px; font-weight: 700; color: var(--gs-ink); }
.gh-card span { font-size: 14.5px; line-height: 1.55; color: var(--gs-muted); }
.gh-card em { margin-top: 4px; font-style: normal; font-size: 14px; font-weight: 700; color: var(--gs-brand-deep); }

.gh-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 2px; border: 1px solid var(--gs-hair); border-radius: 16px; background: var(--gs-surface); overflow: hidden; }
.gh-list li { display: flex; gap: 14px; padding: 16px 20px; border-top: 1px solid var(--gs-hair); }
.gh-list li:first-child { border-top: 0; }
.gh-list__n { flex: none; width: 28px; height: 28px; border-radius: 9px; display: grid; place-items: center; background: var(--gs-wash); color: var(--gs-brand-deep); font-size: 13.5px; font-weight: 750; }
.gh-list__t { display: grid; gap: 3px; min-width: 0; }
.gh-list__t b { font-size: 16px; font-weight: 700; color: var(--gs-ink); }
.gh-list__t span { font-size: 14.5px; line-height: 1.55; color: var(--gs-muted); }

.gh-plans { display: grid; gap: 14px; grid-template-columns: repeat(2, minmax(0, 1fr)); max-width: 740px; }
.gh-plan { display: grid; gap: 8px; align-content: start; padding: 20px; border-radius: 16px; background: var(--gs-surface); border: 1px solid var(--gs-hair); }
.gh-plan--main { border-color: color-mix(in srgb, var(--color-primary) 40%, var(--gs-border)); background: var(--gs-tint); }
.gh-plan b { font-size: 16.5px; font-weight: 750; color: var(--gs-ink); }
.gh-plan__p { font-size: 27px; font-weight: 800; letter-spacing: -.02em; color: var(--gs-brand-deep); font-variant-numeric: tabular-nums; }
.gh-plan__p small { margin-left: 4px; font-size: 14px; font-weight: 600; color: var(--gs-muted); }
.gh-plan p { margin: 0 0 4px; font-size: 14.5px; line-height: 1.55; color: var(--gs-muted); }
.gh-note { margin: 4px 0 0; font-size: 14.5px; color: var(--gs-muted); }
.gh-note a { color: var(--gs-brand-deep); font-weight: 650; }

.gh-faq { display: grid; gap: 10px; max-width: 860px; }
.gh-faq details { border: 1px solid var(--gs-hair); border-radius: 14px; background: var(--gs-surface); overflow: hidden; }
.gh-faq summary { padding: 15px 18px; cursor: pointer; font-size: 16px; font-weight: 650; color: var(--gs-ink); list-style: none; }
.gh-faq summary::-webkit-details-marker { display: none; }
.gh-faq summary::after { content: "+"; float: right; font-weight: 700; color: var(--gs-muted); }
.gh-faq details[open] summary::after { content: "−"; }
.gh-faq p { margin: 0; padding: 0 18px 16px; font-size: 15px; line-height: 1.65; color: var(--gs-text); max-width: 68ch; }

.gh-end {
  display: grid; gap: 8px; justify-items: center; text-align: center; padding: 34px 24px; border-radius: 20px;
  background: var(--gs-wash); border: 1px solid color-mix(in srgb, var(--color-primary) 22%, var(--gs-border));
}
.gh-end b { font-size: 21px; font-weight: 750; color: var(--gs-ink); }
.gh-end span { max-width: 56ch; font-size: 15px; line-height: 1.6; color: var(--gs-muted); }
.gh-end .gs-btn { margin-top: 8px; height: 50px; padding: 0 26px; }

@media (max-width: 900px) {
  .gh-grid { grid-template-columns: minmax(0, 1fr); }
  .gh-plans { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 640px) {
  .gh-wrap { padding: 0 16px; }
  .gh-hero__in { padding: 38px 16px 34px; }
  .gh-sec { padding: 36px 16px 0; }
  .gh-hero__act { display: grid; }
  .gh-hero__act .gs-btn { width: 100%; }
  .gh-stats { gap: 10px 22px; }
  .gh-stat b { font-size: 22px; }
  .gh-list li { padding: 14px 16px; gap: 12px; }
}