:root {
  --bg: #ffffff;
  --fg: #171717;
  --muted: #52525b;
  --line: #e4e4e7;
  --soft: #fafafa;
  --accent: #ffcd08;
  --accent-ink: #171717;
  --dark: #111111;
  --radius: 12px;
  color-scheme: light;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; }
a { color: inherit; }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .5em; letter-spacing: -0.01em; }
h1 { font-size: clamp(1.9rem, 4.2vw, 3rem); }
h2 { font-size: clamp(1.4rem, 2.6vw, 2rem); }
h3 { font-size: 1.05rem; }
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 16px; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 16px; top: 8px; background: var(--accent); padding: 8px 12px; z-index: 10; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
[hidden] { display: none !important; }

/* header */
.site-header { position: sticky; top: 0; z-index: 5; background: rgba(255,255,255,.96); backdrop-filter: blur(6px); border-bottom: 1px solid var(--line); }
.header-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; }
.logo img { display: block; height: 40px; width: auto; }
header nav a { text-decoration: none; font-weight: 600; font-size: .95rem; margin-left: 18px; }
header nav a:hover { text-decoration: underline; text-decoration-color: var(--accent); text-decoration-thickness: 3px; }
.nav-phone { background: var(--accent); padding: 8px 12px; border-radius: 999px; white-space: nowrap; }

/* buttons */
.btn { display: inline-block; background: var(--accent); color: var(--accent-ink); font-weight: 700; text-decoration: none;
  padding: 10px 16px; border-radius: 10px; border: 2px solid var(--accent); transition: transform .1s, box-shadow .1s; white-space: nowrap; }
.btn:hover { transform: translateY(-1px); box-shadow: 0 4px 14px rgba(0,0,0,.12); }
.btn-lg { padding: 14px 22px; font-size: 1.05rem; }
.btn-ghost { background: transparent; border-color: var(--fg); }
.btn-dark { background: var(--dark); color: #fff; border-color: var(--dark); }
.btn-block { display: block; text-align: center; }
.link { font-weight: 600; font-size: .95rem; }

/* hero */
.hero { background: linear-gradient(180deg, #fffbea 0%, #fff 100%); border-bottom: 1px solid var(--line); padding: 56px 0 48px; }
.hero-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 40px; align-items: start; }
.eyebrow { text-transform: uppercase; letter-spacing: .08em; font-size: .78rem; font-weight: 700; color: var(--muted); margin: 0 0 10px; }
.lead { font-size: 1.12rem; color: #3f3f46; max-width: 62ch; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 12px; margin: 22px 0; }
.trust { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 6px 20px; font-weight: 600; font-size: .95rem; }
.trust li::before, .checks li::before { content: ""; display: inline-block; width: 10px; height: 10px; background: var(--accent); border: 2px solid var(--fg); border-radius: 50%; margin-right: 8px; vertical-align: 0; }
.quick { background: #fff; border: 2px solid var(--fg); border-radius: var(--radius); padding: 20px; box-shadow: 6px 6px 0 var(--accent); }
.quick h2 { font-size: 1.1rem; }
.quick-row { display: flex; justify-content: space-between; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--line); text-decoration: none; font-weight: 600; }
.quick-row:hover span { text-decoration: underline; }
.quick-note { font-size: .9rem; color: var(--muted); margin: 12px 0 0; }

/* which table */
.which { padding: 56px 16px 24px; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; font-size: .95rem; min-width: 640px; }
th, td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: var(--soft); font-size: .82rem; text-transform: uppercase; letter-spacing: .05em; }
tr:last-child td { border-bottom: 0; }
td a { font-weight: 700; }

/* courses */
.courses { padding: 40px 0 56px; }
.courses-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 16px; }
.search input { width: min(420px, 100%); padding: 12px 14px; font: inherit; border: 2px solid var(--line); border-radius: 10px; }
.search input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(255,205,8,.35); }
.search { flex: 1 1 280px; display: flex; justify-content: flex-end; }
.jump { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0 8px; }
.jump a { margin: 0; font-size: .85rem; border: 1px solid var(--line); border-radius: 999px; padding: 6px 12px; background: var(--soft); }
.group { padding-top: 32px; scroll-margin-top: 80px; }
.group-blurb { color: var(--muted); margin-top: -4px; }
.noresults { padding: 20px; background: var(--soft); border-radius: var(--radius); margin-top: 20px; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }
.card { display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; background: #fff; transition: border-color .15s, box-shadow .15s; }
.card:hover { border-color: var(--fg); box-shadow: 4px 4px 0 var(--accent); }
.card-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.pill { background: var(--accent); font-size: .78rem; font-weight: 700; padding: 3px 10px; border-radius: 999px; }
.price { font-weight: 800; font-size: 1.15rem; }
.card h3 a { text-decoration: none; }
.card h3 a:hover { text-decoration: underline; }
.cite { color: var(--muted); font-size: .85rem; margin: 0 0 14px; }
.card-actions { margin-top: auto; display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.card .btn { padding: 8px 12px; font-size: .9rem; }

.checks { list-style: none; padding: 0; }
.checks li { margin: 6px 0; }

/* about / faq */
.about { padding: 56px 16px; }
.cols { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.about p { color: #3f3f46; }
.faq { background: var(--soft); padding: 56px 0; border-top: 1px solid var(--line); }
.faq .wrap { max-width: 860px; }
details { background: #fff; border: 1px solid var(--line); border-radius: 10px; margin: 10px 0; padding: 4px 18px; }
summary { cursor: pointer; font-weight: 700; padding: 12px 0; }
details p { margin: 0 0 14px; color: #3f3f46; }
.cta-band { background: var(--accent); padding: 40px 0; }
.cta-row { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 16px; }
.cta-row h2 { margin: 0; }
.cta-row .btn-ghost { margin-left: 8px; }

/* course page */
.crumbs { font-size: .88rem; color: var(--muted); padding-top: 18px; }
.crumbs a { color: var(--muted); }
.course-hero .eyebrow { text-transform: none; letter-spacing: .02em; }
.course-hero { display: grid; grid-template-columns: 1.6fr 1fr; gap: 40px; padding-top: 24px; padding-bottom: 32px; align-items: start; }
.facts { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 12px; margin: 24px 0 0; }
.facts div { border: 1px solid var(--line); border-radius: 10px; padding: 12px; }
.facts dt { font-size: .75rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); font-weight: 700; }
.facts dd { margin: 4px 0 0; font-weight: 600; }
.buy { position: sticky; top: 84px; border: 2px solid var(--fg); border-radius: var(--radius); padding: 22px; box-shadow: 6px 6px 0 var(--accent); }
.buy-price { font-size: 2.4rem; font-weight: 800; margin: 0 0 12px; }
.small { font-size: .92rem; }
.buy-note { font-size: .9rem; color: var(--muted); margin: 8px 0 0; }
.course-body { padding-bottom: 56px; }
.course-body h2 { margin-top: 32px; font-size: 1.4rem; }

/* footer */
.site-footer { background: var(--dark); color: #d4d4d8; padding: 44px 0 20px; }
.site-footer img { height: 40px; width: auto; }
.footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr 1fr; gap: 32px; }
.site-footer h2 { font-size: .95rem; color: #fff; text-transform: uppercase; letter-spacing: .06em; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin: 6px 0; }
.site-footer a { color: #e4e4e7; }
.legal { border-top: 1px solid #27272a; margin-top: 28px; padding-top: 16px; font-size: .85rem; }

@media (max-width: 860px) {
  .hero-grid, .cols, .course-hero, .footer-grid { grid-template-columns: 1fr; }
  .buy { position: static; }
  header nav a:not(.nav-phone):not(.nav-cart) { display: none; }
  .search { justify-content: flex-start; }
  .trust { grid-template-columns: 1fr; }
  .logo img { height: 32px; }
  .nav-phone { font-size: .85rem; padding: 6px 10px; }
}

/* checkout */
.checkout-wrap { padding-top: 32px; padding-bottom: 56px; }
.checkout-header p { color: var(--muted); max-width: 70ch; }
.checkout-grid { display: grid; grid-template-columns: 1.6fr 1fr; gap: 32px; align-items: start; margin-top: 20px; }
.checkout-section { border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; margin-bottom: 20px; }
.checkout-section h2, .summary h2 { font-size: 1.15rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-group { margin-bottom: 14px; }
.form-group label { display: block; font-weight: 600; font-size: .92rem; margin-bottom: 4px; }
.req { color: #b91c1c; }
.form-control { width: 100%; padding: 11px 12px; font: inherit; border: 2px solid var(--line); border-radius: 10px; background: #fff; color: var(--fg); }
.form-control:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(255,205,8,.35); }
.hint { color: var(--muted); font-size: .88rem; margin: 6px 0 0; }
.card-field { border: 2px solid var(--line); border-radius: 10px; padding: 14px 12px; margin-bottom: 14px; }
.pay-error { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; border-radius: 10px; padding: 10px 12px; margin-bottom: 14px; }
button.btn { font: inherit; font-weight: 700; cursor: pointer; }
button.btn:disabled { opacity: .6; cursor: progress; }
.summary { position: sticky; top: 84px; border: 2px solid var(--fg); border-radius: var(--radius); padding: 22px; box-shadow: 6px 6px 0 var(--accent); }
.sum-line { display: flex; justify-content: space-between; gap: 12px; padding-bottom: 12px; border-bottom: 1px solid var(--line); }
.sum-line span { display: block; color: var(--muted); font-size: .9rem; }
.sum-line > span { color: var(--fg); font-weight: 700; font-size: 1rem; }
.sum-row { display: flex; justify-content: space-between; padding: 8px 0; }
.sum-total { border-top: 2px solid var(--fg); margin-top: 6px; padding-top: 12px; font-weight: 800; font-size: 1.2rem; }
.done-card { border: 2px solid var(--fg); border-radius: var(--radius); padding: 26px; box-shadow: 6px 6px 0 var(--accent); max-width: 760px; }
.done-card pre { white-space: pre-wrap; background: var(--soft); border: 1px solid var(--line); border-radius: 10px; padding: 14px; font-size: .88rem; }
@media (max-width: 860px) {
  .checkout-grid, .form-row { grid-template-columns: 1fr; }
  .summary { position: static; }
  .checkout-sidebar { order: -1; }
}

/* header search + cart */
.header-row { flex-wrap: wrap; }
header nav { display: flex; align-items: center; }
.nav-cart { display: inline-flex; align-items: center; gap: 6px; border: 2px solid var(--fg); padding: 6px 10px; border-radius: 999px; white-space: nowrap; }
.cart-count { display: inline-block; min-width: 1.5em; text-align: center; background: var(--fg); color: #fff; border-radius: 999px; font-size: .8rem; padding: 0 6px; }
.site-search { flex: 1 1 220px; max-width: 320px; order: 2; }
.site-search input { width: 100%; padding: 8px 12px; font: inherit; font-size: .92rem; border: 2px solid var(--line); border-radius: 999px; }
.site-search input:focus, .search-big input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(255,205,8,.35); }
.header-row nav { order: 3; }
.btn-sm { padding: 6px 10px; font-size: .85rem; }
.mt-sm { margin-top: 10px; }
.mt { margin-top: 40px; }
.muted { color: var(--muted); }
a.btn.in-cart { background: #fff; border-color: var(--fg); }

/* resources */
.resources { padding: 40px 16px 56px; }
.pill-soft { background: var(--soft); border: 1px solid var(--line); }
.card-res h3 { font-size: 1rem; }
.res-list { padding-left: 20px; }
.res-list li { margin: 6px 0; }

/* guides */
.guide-layout { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 40px; padding-top: 24px; padding-bottom: 24px; align-items: start; }
.guide { max-width: 76ch; }
.guide h2 { margin-top: 36px; font-size: 1.45rem; scroll-margin-top: 90px; }
.guide p, .guide li { color: #27272a; }
.guide li { margin: 6px 0; }
.guide .table-wrap { margin: 16px 0; }
.guide table { min-width: 560px; }
.toc { background: var(--soft); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 18px; margin: 20px 0; }
.toc ol { margin: 8px 0 0; padding-left: 20px; columns: 2; column-gap: 28px; }
.toc li { margin: 3px 0; break-inside: avoid; }
.disclaimer { font-size: .85rem; color: var(--muted); border-top: 1px solid var(--line); padding-top: 14px; margin-top: 32px; }
.guide-side { position: sticky; top: 84px; display: grid; gap: 16px; }
.side-box { border: 2px solid var(--fg); border-radius: var(--radius); padding: 18px; box-shadow: 6px 6px 0 var(--accent); }
.side-box h2 { font-size: 1.05rem; }
.side-course { padding: 10px 0; border-bottom: 1px solid var(--line); }
.side-course:last-child { border-bottom: 0; }
.side-course > a { font-weight: 700; text-decoration: none; }
.side-course > a:hover { text-decoration: underline; }
.side-row { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin-top: 6px; font-size: .9rem; }
.glossary div { padding: 12px 0; border-bottom: 1px solid var(--line); scroll-margin-top: 90px; }
.glossary div:target { background: #fffbea; }
.glossary dt { font-weight: 800; }
.glossary dd { margin: 4px 0 0; color: #3f3f46; }
ul.todo { list-style: none; padding-left: 0; }
ul.todo li::before { content: ""; display: inline-block; width: 14px; height: 14px; border: 2px solid var(--fg); border-radius: 3px; margin-right: 10px; vertical-align: -2px; }

/* quizzes */
.quiz-wrap { padding-top: 24px; padding-bottom: 24px; max-width: 860px; }
.q { border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; margin: 0 0 16px; }
.q legend { font-weight: 700; padding: 0 6px; }
.qn { color: var(--muted); }
.opt { display: flex; gap: 10px; align-items: flex-start; padding: 8px 10px; border-radius: 8px; cursor: pointer; }
.opt:hover { background: var(--soft); }
.opt input { margin-top: 5px; accent-color: #171717; }
.explain { display: none; margin: 10px 0 0; padding: 10px 12px; background: var(--soft); border-radius: 8px; font-size: .95rem; }
.quiz.done .explain { display: block; }
.quiz.done .q.is-right { border-color: #16a34a; }
.quiz.done .q.is-wrong { border-color: #dc2626; }
.quiz.done .opt-correct { background: #dcfce7; font-weight: 600; }
.quiz-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 8px; }
.quiz-result { border: 2px solid var(--fg); border-radius: var(--radius); padding: 22px; box-shadow: 6px 6px 0 var(--accent); margin-top: 24px; }
.score { font-size: 1.6rem; font-weight: 800; margin: 0; }

/* search page */
.search-page { padding-top: 32px; max-width: 900px; }
.search-big { display: flex; gap: 10px; margin: 16px 0; }
.search-big input { flex: 1; min-width: 0; padding: 14px 16px; font: inherit; font-size: 1.05rem; border: 2px solid var(--fg); border-radius: 10px; }
.results { list-style: none; padding: 0; margin: 0; }
.results li { padding: 16px 0; border-bottom: 1px solid var(--line); }
.results li > a:not(.btn) { display: block; font-weight: 700; font-size: 1.1rem; margin-top: 6px; }
.results p { margin: 4px 0 8px; color: #3f3f46; }

/* cart */
.cart-lines { list-style: none; padding: 0; margin: 0; }
.cart-line { display: grid; grid-template-columns: 1fr auto auto auto; gap: 14px; align-items: center; padding: 12px 0; border-bottom: 1px solid var(--line); }
.cart-info strong { display: block; }
.cart-qty { display: flex; align-items: center; gap: 6px; }
.cart-qty input { width: 84px; padding: 8px; }
.cart-amount { font-weight: 800; min-width: 90px; text-align: right; }
.link-btn { background: none; border: 0; padding: 4px; font: inherit; font-size: .88rem; color: var(--muted); text-decoration: underline; cursor: pointer; }
#summaryLines .sum-line { padding: 10px 0; }

@media (max-width: 860px) {
  .guide-layout { grid-template-columns: minmax(0, 1fr); }
  .guide-side { position: static; }
  .toc ol { columns: 1; }
  .site-search { order: 4; flex-basis: 100%; max-width: none; padding-bottom: 10px; }
  .nav-cart { margin-left: 8px; font-size: .85rem; padding: 4px 8px; }
  .cart-line { grid-template-columns: 1fr auto; }
  .cart-info { grid-column: 1 / -1; }
}