/* One container width on every page so the logo never moves. */
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 32px; }

/* Nav: text tabs for destinations, one primary action. Hides on scroll
   down and comes back on scroll up. */
.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--hair);
  transition: transform 0.25s ease;
}
.nav.nav-hidden { transform: translateY(-100%); }
.nav-inner { display: flex; align-items: center; gap: 36px; height: 68px; }
.nav-links { display: flex; gap: 4px; }
.nav-links a {
  position: relative;
  padding: 8px 12px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
  color: var(--muted);
}
.nav-links a:hover { color: var(--ink); background: var(--soft); }
.nav-links a.active { color: var(--ink); }
.nav-links a.active::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 2px;
  height: 3px;
  border-radius: 2px;
  background: var(--ok);
}
.nav-cta { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.nav-cta .btn { padding: 8px 18px; }
.nav-menu {
  display: none;
  width: 42px;
  height: 42px;
  border: 0;
  border-radius: 12px;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  place-items: center;
}
.nav-menu:hover { background: var(--soft); }
.nav-sheet { border-top: 1px solid var(--hair); padding: 8px 16px 16px; background: var(--bg); }
.nav-sheet a { display: block; padding: 13px 4px; border-bottom: 1px solid var(--hair); text-decoration: none; font-weight: 600; font-size: 17px; }
.nav-sheet a:last-child { border-bottom: 0; color: var(--muted); }

/* Hero: the course's color panel */
.hero {
  margin-top: 28px;
  padding: 52px 48px 56px;
  border-radius: var(--r-panel);
  background: var(--mint);
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 48px;
  align-items: center;
}
.hero h1 { margin: 0 0 18px; font-size: 92px; line-height: 0.88; font-stretch: 75%; }
.hero-sub { margin: 0 0 14px; font-size: 19px; max-width: 470px; }
.hero-meta { margin: 0 0 30px; font: 500 13px var(--f-mono); color: var(--ink); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.hero-actions .btn:not(.primary) { background: transparent; }
.hero-progress { display: flex; align-items: center; gap: 12px; margin-top: 22px; max-width: 380px; font: 500 13px var(--f-mono); }
.hero-progress .bar { flex: 1; background: #fff; border-color: var(--ink); }

/* Hero sheet: a still of a practice exercise */
.hero-sheet {
  margin: 0;
  background: #fff;
  border: 2px solid var(--ink);
  border-radius: var(--r-card);
  overflow: hidden;
  font: 13px Arial, sans-serif;
}
.hs-formula { display: flex; align-items: center; border-bottom: 1px solid #dadce0; font: 13px var(--f-mono); }
.hs-name { width: 56px; padding: 9px 10px; border-right: 1px solid #dadce0; font-family: Arial, sans-serif; }
.hs-fx { padding: 9px 10px; color: #5f6368; font-style: italic; font-family: Georgia, serif; }
.hs-input { padding: 9px 4px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.hs-grid { width: 100%; border-collapse: collapse; table-layout: fixed; }
.hs-grid th { background: #f8f9fa; color: #5f6368; font-weight: 400; font-size: 11px; height: 22px; border: 1px solid #e2e3e3; }
.hs-grid tr th:first-child { width: 32px; }
.hs-grid td { height: 25px; padding: 0 6px; border: 1px solid #e2e3e3; white-space: nowrap; overflow: hidden; }
.hs-grid td.r { text-align: right; }
.hs-grid .hs-active { outline: 2px solid #1a73e8; outline-offset: -2px; }
.hs-toast {
  margin: 14px;
  padding: 10px 14px;
  border-radius: var(--r-node);
  background: var(--ok-soft);
  color: var(--ok);
  font: 600 14px var(--f-ui);
}

/* Body */
.page {
  padding: 56px 0 80px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 48px;
  align-items: start;
}
.main-col > section { margin-bottom: 64px; }
.main-col h2 { font-size: 52px; margin: 0 0 22px; }
.card { border: 2px solid var(--ink); border-radius: var(--r-card); padding: 28px 30px; background: var(--bg); }
.card h2 { font-size: 40px; }
.muted { color: var(--muted); }

.outcomes { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 14px 30px; }
.outcomes li { display: flex; gap: 12px; align-items: flex-start; }
.outcomes li::before {
  content: "";
  flex: none;
  width: 18px;
  height: 18px;
  margin-top: 3px;
  border-radius: 5px;
  background: var(--ink) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%23fff' d='M9 16.2 4.8 12l-1.4 1.4L9 19 21 7l-1.4-1.4z'/%3E%3C/svg%3E") center / 13px no-repeat;
}

/* Curriculum: hairline rows under a colored section head */
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.section-head .muted { font: 500 13px var(--f-mono); }
.cur-section { border-top: 2px solid var(--ink); }
.cur-section:last-child { border-bottom: 2px solid var(--ink); }
.cur-section summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 4px;
  cursor: pointer;
  list-style: none;
}
.cur-section summary::-webkit-details-marker { display: none; }
.cur-section summary .num {
  width: 38px;
  height: 38px;
  flex: none;
  display: grid;
  place-items: center;
  border: 2px solid var(--ink);
  border-radius: 10px;
  font: 800 20px var(--f-display);
  font-stretch: 78%;
}
.cur-section summary .name { font: 800 26px/1 var(--f-display); font-stretch: 78%; letter-spacing: -0.02em; }
.cur-section summary .count { margin-left: auto; font: 500 13px var(--f-mono); color: var(--muted); }
.cur-section summary .chev {
  width: 9px; height: 9px; margin: 0 6px 4px 6px;
  border-right: 2px solid var(--ink); border-bottom: 2px solid var(--ink);
  transform: rotate(45deg);
  transition: transform 0.15s ease;
}
.cur-section[open] summary .chev { transform: rotate(-135deg); margin-bottom: -4px; }
.cur-rows { padding: 0 0 14px 52px; }
.cur-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 11px 4px;
  border-top: 1px solid var(--hair);
  text-decoration: none;
  font-size: 15px;
}
.cur-row:hover .title { text-decoration: underline; text-underline-offset: 3px; }
.cur-row .title { flex: 1; min-width: 0; }
.cur-row .mins { color: var(--muted); font: 500 12px var(--f-mono); }

/* Instructor */
.inst-row { display: flex; gap: 22px; align-items: flex-start; }
.avatar {
  width: 84px; height: 84px; flex: none;
  border-radius: 22px;
  border: 2px solid var(--ink);
  background: var(--apricot);
  display: grid; place-items: center;
  font: 800 34px var(--f-display);
  font-stretch: 78%;
}
.inst-row h3 { margin: 0; font-size: 30px; }
.inst-row p { margin: 6px 0 0; }
.inst-row #instBio { margin-top: 12px; font: 19px/1.6 var(--f-read); max-width: 36em; }

/* Next levels */
.next-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.next-card { border-radius: var(--r-card); padding: 24px; }
.next-card h3 { margin: 10px 0 8px; font-size: 32px; }
.next-card p { margin: 0 0 14px; }
.soon {
  display: inline-block;
  font: 600 12px var(--f-mono);
  padding: 3px 12px;
  border-radius: 999px;
  border: 1.5px dashed var(--ink);
}

/* FAQ */
.faq details { border-top: 1px solid var(--hair); padding: 16px 0; }
.faq details:last-child { border-bottom: 1px solid var(--hair); }
.faq summary { cursor: pointer; font-weight: 600; font-size: 17px; }
.faq p { margin: 10px 0 0; color: var(--muted); max-width: 40em; }

/* Enroll card */
.side-col { position: sticky; top: 96px; }
.price { font: 800 56px/1 var(--f-display); font-stretch: 75%; margin: 0; }
.enroll .muted { margin: 6px 0 20px; font-size: 14px; }
.btn.block { width: 100%; }
.includes { list-style: none; margin: 22px 0 0; padding: 18px 0 0; border-top: 1px solid var(--hair); font-size: 14px; }
.includes li { display: flex; align-items: center; gap: 10px; padding: 5px 0; }
.includes .type-icon { color: var(--ink); }

.footer { border-top: 1px solid var(--hair); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; padding-top: 28px; padding-bottom: 28px; }
.footer .logo { font-size: 22px; }
.footer .logo-mark { width: 26px; height: 26px; }
.footer .disclaimer { margin: 0; max-width: 520px; }

@media (max-width: 900px) {
  .wrap { padding: 0 16px; }
  .nav-inner { height: 60px; gap: 16px; }
  .nav-links, .nav-login { display: none; }
  .nav-menu { display: grid; }
  .hero { grid-template-columns: 1fr; padding: 32px 22px 28px; gap: 30px; margin-top: 16px; }
  .hero h1 { font-size: 64px; }
  .page { grid-template-columns: 1fr; padding-top: 36px; gap: 36px; }
  .side-col { position: static; order: -1; }
  .main-col h2 { font-size: 40px; }
  .outcomes, .next-grid { grid-template-columns: 1fr; }
  .card { padding: 22px; }
  .cur-rows { padding-left: 0; }
  .cur-section summary .name { font-size: 22px; }
  .inst-row { flex-direction: column; }
}

/* At-a-glance numbers, right under the hero */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 20px; }
.stat { padding: 20px 22px; border-radius: var(--r-card); background: var(--bg); border: 2px solid var(--ink); }
.stat-num { font: 800 56px/0.9 var(--f-display); font-stretch: 75%; letter-spacing: -0.02em; }
.stat-label { margin-top: 8px; font-size: 14px; color: var(--muted); }

/* Instructor with credentials */
.inst-card { border: 2px solid var(--ink); border-radius: var(--r-card); padding: 26px 28px; background: var(--bg); }
.inst-bio { margin: 18px 0 8px; font: 19px/1.6 var(--f-read); max-width: 38em; }
.creds { display: grid; margin-top: 10px; }
.cred { display: grid; grid-template-columns: 230px minmax(0, 1fr); gap: 20px; align-items: baseline; padding: 14px 0; border-top: 1px solid var(--hair); }
.cred-org { margin: 0; font: 800 22px/1.05 var(--f-display); font-stretch: 78%; color: var(--ok); }
.cred p:last-child { margin: 0; font-size: 15px; color: var(--muted); }

/* Closing call to action */
.cta-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin: 0 0 56px;
  padding: 40px 44px;
  border-radius: var(--r-panel);
  background: var(--mint);
}
.cta-band h2 { margin: 0; font-size: 48px; max-width: 14em; }

/* Audience */
.aud-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.aud { border: 2px solid var(--ink); border-radius: var(--r-card); padding: 20px; }
.aud h3 { margin: 0 0 8px; font-size: 28px; }
.aud p { margin: 0 0 12px; font-size: 14px; color: var(--muted); }
.aud ul { list-style: none; margin: 0; padding: 12px 0 0; border-top: 1px solid var(--hair); font: 500 12.5px/1.9 var(--f-mono); }

/* Certificate preview */
.cert {
  position: relative;
  max-width: 560px;
  padding: 28px 32px 24px;
  border: 2px solid var(--ink);
  border-radius: var(--r-card);
  background: #fff;
  box-shadow: 8px 8px 0 var(--butter), 8px 8px 0 2px var(--ink);
}
.cert::before { content: ""; position: absolute; inset: 8px; border: 1px solid var(--hair); border-radius: 14px; pointer-events: none; }
.cert-top { display: flex; align-items: center; gap: 10px; font: 600 13px var(--f-mono); }
.cert-mark .logo-mark { width: 26px; height: 26px; display: block; }
.cert-level { margin: 22px 0 2px; font: 600 15px var(--f-ui); color: var(--muted); }
.cert-title { margin: 0; font: 800 54px/0.95 var(--f-display); font-stretch: 75%; letter-spacing: -0.02em; }
.cert-to { margin: 18px 0 22px; font: italic 20px var(--f-read); color: var(--muted); }
.cert-to span { font-style: normal; color: var(--ink); border-bottom: 1.5px solid var(--ink); padding: 0 40px 2px 4px; }
.cert-foot { display: flex; justify-content: space-between; gap: 12px; padding-top: 12px; border-top: 1px solid var(--hair); font: 500 12px var(--f-mono); color: var(--muted); }
.cert-note { margin: 22px 0 16px; }

@media (max-width: 900px) {
  .stats { grid-template-columns: 1fr 1fr; gap: 10px; }
  .stat { padding: 16px; }
  .stat-num { font-size: 44px; }
  .aud-grid, .cred { grid-template-columns: 1fr; }
  .cred { gap: 4px; }
  .inst-card { padding: 20px; }
  .cta-band { flex-direction: column; align-items: flex-start; padding: 28px 22px; }
  .cta-band h2 { font-size: 36px; }
  .cert { padding: 22px 20px 18px; box-shadow: 6px 6px 0 var(--butter), 6px 6px 0 2px var(--ink); margin-right: 8px; }
  .cert-title { font-size: 40px; }
  .cert-foot { flex-direction: column; gap: 4px; }
}

/* Locked levels in the curriculum, and the pass upsell */
.cur-section summary .num.lvl { font-size: 16px; background: #fff; }
.cur-sub { margin: 10px 0 0; padding: 6px 4px 0; font-weight: 700; font-size: 13px; color: var(--muted); }
.cur-row.locked { color: var(--muted); }
.cur-row.locked .type-icon { width: 16px; height: 16px; }
.upsell { margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--hair); }
.up-title { margin: 0 0 4px; font-weight: 700; }
.up-title span { color: var(--muted); font-weight: 500; font-size: 14px; }
.up-text { margin: 0 0 12px; font-size: 14px; color: var(--muted); }
.up-owned { display: flex; align-items: center; gap: 8px; margin: 0; font-weight: 700; color: #0d652d; }
.up-owned svg { width: 18px; height: 18px; border-radius: 5px; background: #188038; padding: 2px; }
a.soon { color: inherit; text-decoration: none; }
a.soon:hover { background: #fff; }