/* หน้าขาย (index.html) — ตาม InvestorStack website UI kit, tokens อยู่ใน tokens.css */

html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 32px; }
.narrow { max-width: 760px; }
.center { text-align: center; }
.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.ic { width: 18px; height: 18px; flex: none; }

/* ---------- Buttons ---------- */
.btn {
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
  border-radius: var(--radius);
  padding: 11px 20px;
  border: 1px solid transparent;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  white-space: nowrap;
  transition: background var(--dur) var(--ease-out), transform var(--dur-fast) var(--ease-out), border-color var(--dur);
}
.btn:active { transform: scale(0.98); }
.btn:focus-visible { outline: none; box-shadow: var(--ring-focus); }
.btn:disabled { opacity: 0.6; cursor: wait; }
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-700); }
.btn-ghost { background: var(--surface); color: var(--brand); border-color: var(--line-2); }
.btn-ghost:hover { background: var(--paper-2); }
.btn-light { background: #fff; color: var(--brand); }
.btn-light:hover { background: var(--gold-wash); }
.btn-lg { padding: 14px 26px; font-size: 16px; }
.btn-block { width: 100%; }

/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid transparent;
  transition: background var(--dur) var(--ease-out), border-color var(--dur);
}
.nav.scrolled {
  background: rgba(250, 248, 242, 0.85);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  border-bottom-color: var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 18px; font-weight: 700; letter-spacing: -0.02em; color: var(--brand); }
.logo-mark { width: 28px; height: 28px; border-radius: 7px; background: var(--brand); color: #fff; display: flex; align-items: center; justify-content: center; }
.nav-links { display: flex; align-items: center; gap: 30px; }
.nav-link { font-size: 14.5px; font-weight: 500; color: var(--ink-2); transition: color var(--dur); }
.nav-link:hover { color: var(--ink); }

/* ---------- Hero ---------- */
.hero { padding: 64px 0 48px; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--brand-600);
  background: var(--brand-50);
  border: 1px solid var(--brand-100);
  padding: 5px 12px;
  border-radius: 999px;
}
.hero h1 {
  font-size: 52px;
  line-height: 1.15;
  letter-spacing: -0.02em;
  font-weight: 600;
  margin: 22px 0 0;
  color: var(--brand);
  text-wrap: balance;
}
/* ขีดเน้นสีทองใต้คำสำคัญ */
.hero h1 .u { background: linear-gradient(transparent 56%, var(--gold-soft) 56%, var(--gold-soft) 86%, transparent 86%); padding: 0 2px; -webkit-box-decoration-break: clone; box-decoration-break: clone; }
.lede { font-size: 19px; line-height: 1.6; color: var(--ink-2); margin: 22px 0 0; max-width: 32em; }
.hero-actions { display: flex; gap: 14px; margin-top: 32px; align-items: center; flex-wrap: wrap; }
.hero-note { font-size: 13px; color: var(--ink-3); margin-top: 18px; display: flex; align-items: center; gap: 7px; }
.hero-note .ic { width: 15px; height: 15px; }

/* Course preview card (แทน product mock) */
.mock { background: var(--surface); border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow-xl); overflow: hidden; }
.mock-bar { display: flex; align-items: center; gap: 7px; padding: 13px 16px; border-bottom: 1px solid var(--line); background: var(--surface-2); }
.mock-dot { width: 10px; height: 10px; border-radius: 999px; background: var(--line-2); }
.mock-title { font-size: 12px; color: var(--ink-3); margin-left: 8px; font-family: var(--font-mono); min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mock-body { padding: 20px; }
.mock-h { font-size: 15px; font-weight: 700; color: var(--ink); margin-bottom: 14px; }
.mini-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 16px; }
.mini { background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 12px; }
.mini .k { font-size: 10.5px; letter-spacing: 0.05em; text-transform: uppercase; color: var(--ink-3); font-weight: 600; }
.mini .v { font-family: var(--font-mono); font-size: 20px; font-weight: 600; letter-spacing: -0.02em; margin-top: 6px; color: var(--ink); }
.lessons { list-style: none; margin: 0; padding: 0; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.lessons li { display: flex; align-items: center; gap: 12px; padding: 12px 14px; font-size: 14px; color: var(--ink-2); border-top: 1px solid var(--line); background: var(--surface); }
.lessons li:first-child { border-top: 0; }
.lessons .num { font-family: var(--font-mono); font-size: 12px; color: var(--ink-3); width: 22px; }
.lessons .ic { color: var(--brand-300); width: 16px; height: 16px; margin-left: auto; }
.lessons li.done .ic { color: var(--up); }

/* ---------- Sections ---------- */
.section { padding: 96px 0; }
.section.alt { background: var(--surface-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { max-width: 680px; margin: 0 0 48px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head .k { font-size: 12px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--gold-600); margin: 0 0 14px; }
.section-head h2 { font-size: 38px; line-height: 1.2; letter-spacing: -0.02em; font-weight: 600; margin: 0; color: var(--brand); text-wrap: balance; }
.section-head p { font-size: 18px; line-height: 1.6; color: var(--ink-2); margin: 16px 0 0; }

/* Problem list */
.problems { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.problems li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 18px 20px;
  font-size: 16px;
  color: var(--ink-2);
  box-shadow: var(--shadow-sm);
}
.problems .ic { color: var(--down); margin-top: 3px; }

/* Features */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feature {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 26px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--dur) var(--ease-out), box-shadow var(--dur);
}
.feature:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.feature .ico { width: 44px; height: 44px; border-radius: 11px; background: var(--brand-50); color: var(--brand); display: flex; align-items: center; justify-content: center; margin-bottom: 18px; }
.feature .ico .ic { width: 22px; height: 22px; }
.feature h3 { font-size: 19px; font-weight: 700; letter-spacing: -0.01em; margin: 0 0 9px; color: var(--ink); }
.feature p { font-size: 15px; line-height: 1.6; color: var(--ink-2); margin: 0; }

/* Testimonials */
.quotes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.quote { margin: 0; background: var(--surface); border: 1px solid var(--line); border-radius: 18px; padding: 26px; box-shadow: var(--shadow-sm); display: flex; flex-direction: column; gap: 18px; }
.quote .mark { color: var(--gold); width: 24px; height: 24px; }
.quote p { margin: 0; font-size: 16px; line-height: 1.65; color: var(--ink); }
.quote footer { margin-top: auto; display: flex; align-items: center; gap: 12px; font-size: 14px; color: var(--ink-3); }
.quote footer b { display: block; color: var(--ink); font-weight: 600; }
.avatar { width: 38px; height: 38px; border-radius: 999px; background: var(--brand-50); color: var(--brand); font-weight: 600; display: flex; align-items: center; justify-content: center; flex: none; }

/* ---------- Pricing ---------- */
.tiers { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; align-items: stretch; max-width: 820px; margin: 0 auto; }
.tier { background: var(--surface); border: 1px solid var(--line); border-radius: 18px; padding: 30px 28px 28px; box-shadow: var(--shadow-sm); position: relative; display: flex; flex-direction: column; }
.tier.feat { border-color: var(--brand); box-shadow: var(--shadow-lg); }
.tier .badge { position: absolute; top: -12px; left: 28px; background: var(--gold); color: #fff; font-size: 11px; font-weight: 700; letter-spacing: 0.04em; padding: 4px 12px; border-radius: 999px; }
.tier .name { font-size: 17px; font-weight: 700; color: var(--ink); }
.tier .desc { font-size: 14px; color: var(--ink-3); margin: 4px 0 0; }
.tier .price-row { display: flex; align-items: baseline; gap: 10px; margin: 18px 0 2px; flex-wrap: wrap; }
.tier .price { font-family: var(--font-mono); font-size: 40px; font-weight: 600; letter-spacing: -0.03em; color: var(--ink); }
.tier .was { font-family: var(--font-mono); font-size: 16px; color: var(--ink-3); text-decoration: line-through; }
.tier .save { font-size: 12px; font-weight: 600; color: var(--up); background: var(--up-wash); padding: 2px 8px; border-radius: 999px; }
.tier .per { font-size: 13px; color: var(--ink-3); }
.tier ul { list-style: none; padding: 20px 0 0; margin: 20px 0 24px; display: flex; flex-direction: column; gap: 11px; border-top: 1px solid var(--line); }
.tier li { display: flex; gap: 10px; align-items: flex-start; font-size: 14.5px; color: var(--ink-2); }
.tier li .ic { width: 17px; height: 17px; color: var(--up); margin-top: 3px; }
.tier .btn { margin-top: auto; }
.pricing-note { display: flex; align-items: center; justify-content: center; gap: 8px; font-size: 13px; color: var(--ink-3); margin: 28px 0 0; }
.pricing-note .ic { width: 15px; height: 15px; }
.checkout-error { color: var(--down); text-align: center; margin: 16px 0 0; font-size: 14px; }

/* ---------- FAQ ---------- */
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 22px 0;
  font-size: 17px;
  font-weight: 600;
  color: var(--ink);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary .ic { color: var(--ink-3); transition: transform var(--dur) var(--ease-out); }
.faq details[open] summary .ic { transform: rotate(45deg); color: var(--gold); }
.faq details p { margin: 0 0 22px; font-size: 15.5px; line-height: 1.7; color: var(--ink-2); max-width: 62ch; }

/* ---------- CTA band (ink) ---------- */
.cta-band {
  background: var(--brand);
  color: #fff;
  border-radius: var(--radius-xl);
  padding: 64px 48px;
  text-align: center;
}
.cta-band .k { font-size: 12px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--gold-soft); margin: 0 0 14px; }
.cta-band h2 { font-size: 36px; line-height: 1.2; letter-spacing: -0.02em; font-weight: 600; margin: 0; text-wrap: balance; }
.cta-band p { font-size: 17px; color: var(--brand-300); margin: 14px auto 30px; max-width: 34em; }

/* ---------- Footer ---------- */
.footer { background: var(--brand-700); color: #fff; padding: 56px 0 36px; margin-top: 96px; }
.footer-top { display: flex; justify-content: space-between; gap: 32px; flex-wrap: wrap; padding-bottom: 32px; border-bottom: 1px solid rgba(255, 255, 255, 0.1); }
.footer .logo { color: #fff; }
.footer .logo-mark { background: #fff; color: var(--brand); }
.footer-blurb { font-size: 14px; line-height: 1.6; color: var(--brand-300); margin: 14px 0 0; max-width: 34ch; }
.footer-links { display: flex; gap: 28px; flex-wrap: wrap; align-items: flex-start; }
.footer-links a { font-size: 14px; color: rgba(255, 255, 255, 0.82); }
.footer-links a:hover { color: #fff; }
.footer-bot { padding-top: 24px; font-size: 13px; color: var(--brand-300); }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero-grid, .features, .quotes { grid-template-columns: 1fr; }
  .hero h1 { font-size: 38px; }
  .section { padding: 72px 0; }
  .section-head h2 { font-size: 30px; }
  .nav-links { display: none; }
  .cta-band { padding: 48px 24px; }
  .cta-band h2 { font-size: 28px; }
}
@media (max-width: 520px) {
  .wrap { padding: 0 16px; }
  .hero { padding: 40px 0 32px; }
  .hero h1 { font-size: 32px; }
  .lede { font-size: 17px; }
  .hero-actions .btn { width: 100%; }
  .mini-cards { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .mini .v { font-size: 17px; }
  .tiers { grid-template-columns: 1fr; }
}

/* ---------- Course-specific sections ---------- */
/* แถบตลาดที่รองรับ (trust bar) */
.trust { padding: 8px 0 72px; }
.trust p { text-align: center; font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-3); font-weight: 600; margin: 0 0 18px; }
.trust-row { display: flex; align-items: center; justify-content: center; gap: 14px 40px; flex-wrap: wrap; }
.trust-name { font-size: 20px; font-weight: 600; color: var(--ink-2); letter-spacing: -0.01em; }

/* แถบตัวเลขพื้นกรมท่า */
.band { background: var(--brand); color: #fff; border-radius: var(--radius-xl); padding: 48px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; text-align: center; }
.band .v { font-family: var(--font-mono); font-size: 44px; font-weight: 600; letter-spacing: -0.03em; }
.band .v em { color: var(--gold-soft); font-style: normal; }
.band .l { font-size: 14px; color: var(--brand-300); margin-top: 6px; }

/* หลักสูตร: แบ่งเป็นช่วง */
.phases { display: grid; gap: 14px; }
.phase { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); overflow: hidden; }
.phase summary { list-style: none; cursor: pointer; display: grid; grid-template-columns: auto 1fr auto auto; align-items: center; gap: 18px; padding: 20px 24px; }
.phase summary::-webkit-details-marker { display: none; }
.phase .step-no { font-family: var(--font-mono); font-size: 13px; font-weight: 600; color: var(--gold-600); background: var(--gold-wash); border-radius: 999px; padding: 4px 10px; }
.phase .t { font-size: 17px; font-weight: 600; color: var(--ink); }
.phase .t small { display: block; font-size: 13.5px; font-weight: 400; color: var(--ink-3); margin-top: 2px; }
.phase .count { font-size: 13px; color: var(--ink-3); white-space: nowrap; }
.phase .count b { font-family: var(--font-mono); font-weight: 600; color: var(--ink-2); }
.phase summary .ic { color: var(--ink-3); transition: transform var(--dur) var(--ease-out); }
.phase[open] summary .ic { transform: rotate(45deg); color: var(--gold); }
.phase ol { list-style: none; margin: 0; padding: 0 24px 20px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 24px; border-top: 1px solid var(--line); }
.phase li { display: flex; justify-content: space-between; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--line); font-size: 14.5px; color: var(--ink-2); }
.phase li span:last-child { font-family: var(--font-mono); font-size: 12.5px; color: var(--ink-3); white-space: nowrap; }

/* เหมาะกับใคร */
.audience { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.persona { background: var(--surface); border: 1px solid var(--line); border-radius: 18px; padding: 26px; box-shadow: var(--shadow-sm); }
.persona .ic { width: 22px; height: 22px; color: var(--up); margin-bottom: 14px; }
.persona h3 { font-size: 17px; font-weight: 700; margin: 0 0 8px; color: var(--ink); }
.persona p { font-size: 15px; line-height: 1.6; color: var(--ink-2); margin: 0; }

/* การ์ดราคาใบเดียว ไม่ต้องกว้างเต็มแถว */
.tiers:has(> :only-child) { max-width: 460px; }

.disclaimer { font-size: 12.5px; line-height: 1.7; color: var(--brand-300); margin: 24px 0 0; max-width: 80ch; }

@media (max-width: 900px) {
  .band, .audience { grid-template-columns: 1fr; }
  .band { padding: 36px 24px; gap: 24px; }
  .phase ol { grid-template-columns: 1fr; }
  .phase summary { grid-template-columns: auto 1fr auto; }
  .phase .count { display: none; }
}

/* ---------- Preview lessons (Vimeo) ---------- */
.preview { display: grid; grid-template-columns: 1.6fr 1fr; gap: 20px; align-items: start; }
.player {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--brand-700);
  box-shadow: var(--shadow-xl);
}
.player iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.poster {
  position: absolute;
  inset: 0;
  width: 100%;
  border: 0;
  padding: 0;
  cursor: pointer;
  background: var(--brand-700) center / cover no-repeat;
  color: #fff;
  font: inherit;
}
.poster::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(14, 29, 54, 0.15) 30%, rgba(14, 29, 54, 0.85)); }
.poster .play {
  position: absolute;
  z-index: 1;
  top: 50%;
  left: 50%;
  width: 72px;
  height: 72px;
  margin: -36px 0 0 -36px;
  border-radius: 999px;
  background: #fff;
  color: var(--brand);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  transition: transform var(--dur) var(--ease-out);
}
.poster:hover .play { transform: scale(1.06); }
.poster .play .ic { width: 28px; height: 28px; margin-left: 4px; }
.poster .cap { position: absolute; z-index: 1; left: 24px; right: 24px; bottom: 20px; text-align: left; }
.poster .cap .k { font-size: 11px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--gold-soft); }
.poster .cap .t { font-size: 20px; font-weight: 600; margin-top: 4px; }
.player-empty { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; color: var(--brand-300); font-size: 14px; text-align: center; padding: 24px; }
.player-empty .ic { width: 36px; height: 36px; }

.playlist { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.playlist button {
  width: 100%;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
  text-align: left;
  padding: 16px 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  font: inherit;
  color: var(--ink);
  cursor: pointer;
  transition: border-color var(--dur), background var(--dur);
}
.playlist button:hover { background: var(--surface-2); }
.playlist button:focus-visible { outline: none; box-shadow: var(--ring-focus); }
.playlist button[aria-current="true"] { border-color: var(--brand); background: var(--brand-50); }
.playlist .no { font-family: var(--font-mono); font-size: 12.5px; font-weight: 600; color: var(--gold-600); }
.playlist .t { font-size: 15px; font-weight: 600; line-height: 1.4; }
.playlist .t small { display: block; font-size: 12.5px; font-weight: 400; color: var(--ink-3); margin-top: 2px; }
.playlist .dur { font-family: var(--font-mono); font-size: 12.5px; color: var(--ink-3); }
.playlist .dur .ic { width: 18px; height: 18px; color: var(--brand-300); }
.playlist button[aria-current="true"] .dur .ic { color: var(--brand); }

@media (max-width: 900px) {
  .preview { grid-template-columns: 1fr; }
}
.nowrap { white-space: nowrap; }

/* ---------- Instructor ---------- */
.hero-teacher { display: inline-flex; align-items: center; gap: 12px; margin-top: 26px; padding: 6px 16px 6px 6px; border: 1px solid var(--line); border-radius: 999px; background: var(--surface); text-decoration: none; color: var(--ink-2); font-size: 14px; line-height: 1.35; }
.hero-teacher:hover { border-color: var(--line-3); }
.hero-teacher img { width: 40px; height: 40px; border-radius: 999px; object-fit: cover; }
.hero-teacher b { color: var(--ink); font-weight: 600; }
.hero-teacher small { display: block; font-size: 12px; color: var(--ink-3); }

.teacher { max-width: 880px; margin: 0 auto; display: grid; grid-template-columns: 240px 1fr; gap: 40px; align-items: center; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); box-shadow: var(--shadow); padding: 36px; }
.teacher-photo { width: 240px; height: 240px; border-radius: var(--radius-lg); object-fit: cover; background: var(--brand); }
.teacher-body h3 { font-size: 28px; font-weight: 600; letter-spacing: -0.01em; color: var(--brand); margin: 0; }
.teacher-body h3 span { color: var(--gold-600); }
.teacher-role { margin: 6px 0 20px; font-size: 15px; color: var(--ink-2); }
.teacher-facts { list-style: none; padding: 0; margin: 0 0 24px; display: grid; gap: 14px; }
.teacher-facts li { display: flex; gap: 12px; font-size: 15px; line-height: 1.5; color: var(--ink); }
.teacher-facts .ic { width: 20px; height: 20px; flex: none; margin-top: 2px; color: var(--gold-600); }
.teacher-facts small { display: block; font-size: 13.5px; color: var(--ink-3); margin-top: 2px; }
@media (max-width: 720px) {
  .teacher { grid-template-columns: 1fr; padding: 24px 20px; gap: 24px; justify-items: start; }
  .teacher-photo { width: 120px; height: 120px; }
  .teacher-body h3 { font-size: 24px; }
}

/* ---------- Hero video (แทนกล่องตัวอย่างคอร์ส) ---------- */
.hero-media .hero-player { border-radius: 0; box-shadow: none; }
.hero-stats { display: grid; grid-template-columns: repeat(3, 1fr); padding: 14px 8px; font-size: 13px; color: var(--ink-3); text-align: center; }
.hero-stats > div + div { border-left: 1px solid var(--line); }
.hero-stats b { font-family: var(--font-mono); font-size: 17px; font-weight: 600; color: var(--ink); margin-right: 4px; }
.hero-media:not(.has-video) .hero-stats { padding: 28px 8px; }
.hero-media .poster .cap .t { font-size: 18px; }
/* ภาพปกคอร์สเป็นตัวหน้า: ไม่ต้องมีคำบรรยาย/เงาไล่สีทับ เพราะภาพมีชื่อคอร์สอยู่แล้ว */
.poster.is-cover::after { background: rgba(14, 29, 54, 0.08); }
.poster.is-cover .cap { display: none; }
.poster.is-cover .play { width: 64px; height: 64px; margin: -32px 0 0 -32px; }
.hero-cover { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }