/* ============================================================
   CompoundLearn — design system
   Clinical, precise, trust-first. No frameworks.
   ============================================================ */

:root {
  --ink: #0f172a;
  --body: #3f4a5f;
  --muted: #64748b;
  --faint: #94a3b8;
  --border: #e2e8f0;
  --line: #eef1f6;
  --bg: #ffffff;
  --bg-soft: #f8fafc;
  --bg-wash: #f4f6fb;
  --accent: #0f766e;
  --accent-deep: #115e59;
  --accent-ink: #134e4a;
  --accent-soft: #f0faf8;
  --accent-border: #d3e9e5;
  --green: #15803d;
  --green-soft: #ecfdf3;
  --amber: #b45309;
  --amber-soft: #fffbeb;
  --radius: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 1px 3px rgba(15, 23, 42, 0.06), 0 8px 24px -8px rgba(15, 23, 42, 0.12);
  --shadow-lg: 0 2px 4px rgba(15, 23, 42, 0.05), 0 24px 48px -16px rgba(15, 23, 42, 0.18);
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-display: "Source Serif 4", Georgia, "Times New Roman", serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  color: var(--body);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { display: block; max-width: 100%; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-deep); }

.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 760px; margin: 0 auto; padding: 0 24px; }

/* ---------- Typography ---------- */

h1, h2, h3 { color: var(--ink); }

.display-xl {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2.4rem, 4.6vw, 3.6rem);
  line-height: 1.08;
  letter-spacing: -0.015em;
}

.display-lg {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.9rem, 3.2vw, 2.5rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.display-md {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.35rem;
  line-height: 1.3;
}

.eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}

.lede { font-size: 1.125rem; color: var(--muted); }

.section-head { max-width: 640px; margin-bottom: 56px; }
.section-head.centered { margin-left: auto; margin-right: auto; text-align: center; }
.section-head h2 { margin-bottom: 14px; }

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1;
  padding: 14px 22px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--ink);
  color: #fff;
  box-shadow: var(--shadow-sm), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}
.btn-primary:hover { background: #1e293b; color: #fff; }

.btn-secondary {
  background: var(--bg);
  color: var(--ink);
  border-color: var(--border);
  box-shadow: var(--shadow-sm);
}
.btn-secondary:hover { border-color: #c7cedd; color: var(--ink); }

.btn-lg { padding: 16px 26px; font-size: 1rem; }

.btn .arrow { transition: transform 0.15s ease; }
.btn:hover .arrow { transform: translateX(2px); }

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.brand:hover { color: var(--ink); }
.brand .mark {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-deep) 100%);
  display: grid;
  place-items: center;
  color: #fff;
  flex-shrink: 0;
}

.main-nav { display: flex; align-items: center; gap: 28px; }
.main-nav .nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--body);
}
.main-nav .nav-link:hover { color: var(--ink); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  padding: 8px;
  cursor: pointer;
  color: var(--ink);
}

/* ---------- Hero ---------- */

.hero {
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(1000px 500px at 85% -10%, rgba(15, 118, 110, 0.06), transparent 60%),
    linear-gradient(180deg, var(--bg-soft) 0%, var(--bg) 85%);
  overflow: hidden;
}

.hero .container {
  display: grid;
  grid-template-columns: minmax(0, 46fr) minmax(0, 54fr);
  gap: 56px;
  align-items: center;
  padding-top: 80px;
  padding-bottom: 88px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--accent-ink);
  background: var(--accent-soft);
  border: 1px solid var(--accent-border);
  border-radius: 999px;
  padding: 6px 14px;
  margin-bottom: 22px;
}
.hero-badge .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.16);
}

.hero h1 { margin-bottom: 20px; }
.hero .lede { margin-bottom: 32px; max-width: 46ch; }

.hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 36px; }

.hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}
.hero-facts li {
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--muted);
}
.hero-facts svg { color: var(--green); flex-shrink: 0; }

/* ---------- Product mockup ---------- */

.mock-wrap { position: relative; }

.mock-window {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  font-size: 11.5px;
}

.mock-titlebar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
  background: var(--bg-soft);
}
.mock-titlebar .dots { display: flex; gap: 5px; }
.mock-titlebar .dots span { width: 9px; height: 9px; border-radius: 50%; background: #d8dee9; }
.mock-titlebar .url {
  flex: 1;
  max-width: 260px;
  margin: 0 auto;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 3px 12px;
  text-align: center;
  color: var(--faint);
  font-size: 10.5px;
}

.mock-body { display: flex; min-height: 320px; }

.mock-side {
  width: 138px;
  flex-shrink: 0;
  border-right: 1px solid var(--line);
  padding: 14px 10px;
  background: var(--bg-soft);
}
.mock-side .mock-nav-item {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 6px 9px;
  border-radius: 6px;
  color: var(--muted);
  font-weight: 500;
  margin-bottom: 2px;
}
.mock-side .mock-nav-item.active { background: var(--accent-soft); color: var(--accent-deep); }
.mock-side .mock-nav-item svg { width: 12px; height: 12px; }

.mock-main { flex: 1; padding: 16px 18px; min-width: 0; }
.mock-main h4 { font-size: 13px; font-weight: 600; color: var(--ink); margin-bottom: 12px; }

.mock-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-bottom: 14px; }
.mock-stat {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 9px 11px;
  background: #fff;
}
.mock-stat .k { font-size: 16px; font-weight: 700; color: var(--ink); letter-spacing: -0.01em; }
.mock-stat .l { font-size: 9.5px; color: var(--faint); margin-top: 1px; }
.mock-stat .k.good { color: var(--green); }
.mock-stat .k.warn { color: var(--amber); }

.mock-table { border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.mock-row {
  display: grid;
  grid-template-columns: 1.2fr 1.6fr 1fr 0.8fr;
  gap: 10px;
  align-items: center;
  padding: 8px 12px;
  border-bottom: 1px solid var(--line);
  background: #fff;
}
.mock-row:last-child { border-bottom: none; }
.mock-row.head {
  background: var(--bg-soft);
  color: var(--faint);
  font-size: 9.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.mock-row .name { font-weight: 600; color: var(--ink); }
.mock-row .module { color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.mock-bar { height: 5px; border-radius: 99px; background: var(--line); overflow: hidden; }
.mock-bar i { display: block; height: 100%; border-radius: 99px; background: var(--accent); }

.pill {
  display: inline-block;
  font-size: 9.5px;
  font-weight: 600;
  padding: 2.5px 8px;
  border-radius: 999px;
  white-space: nowrap;
}
.pill.green { background: var(--green-soft); color: var(--green); }
.pill.amber { background: var(--amber-soft); color: var(--amber); }
.pill.indigo { background: var(--accent-soft); color: var(--accent-deep); }

.mock-cert {
  position: absolute;
  right: -14px;
  bottom: -24px;
  width: 250px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  padding: 14px 16px;
  font-size: 11px;
}
.mock-cert .cert-head { display: flex; align-items: center; gap: 9px; margin-bottom: 8px; }
.mock-cert .cert-icon {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--green-soft);
  color: var(--green);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}
.mock-cert .cert-title { font-weight: 600; color: var(--ink); font-size: 11.5px; }
.mock-cert .cert-sub { color: var(--faint); font-size: 10px; }
.mock-cert .cert-meta {
  display: flex;
  justify-content: space-between;
  border-top: 1px solid var(--line);
  padding-top: 8px;
  color: var(--muted);
  font-size: 10px;
}

/* ---------- Chapter band ---------- */

.chapters { padding: 72px 0; border-bottom: 1px solid var(--line); }
.chapters-intro { text-align: center; margin-bottom: 36px; }
.chapters-intro p { color: var(--muted); font-size: 0.9375rem; }

.chapter-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.chapter-card {
  display: flex;
  align-items: center;
  gap: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 22px;
  background: #fff;
  box-shadow: var(--shadow-sm);
}
.chapter-num {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--accent-deep);
  background: var(--accent-soft);
  border: 1px solid var(--accent-border);
  border-radius: 10px;
  padding: 8px 12px;
  white-space: nowrap;
}
.chapter-card h3 { font-size: 0.9375rem; font-weight: 600; }
.chapter-card p { font-size: 0.8125rem; color: var(--muted); }

/* ---------- Sections ---------- */

.section { padding: 96px 0; }
.section.soft { background: var(--bg-soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

/* ---------- Pain cards ---------- */

.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }

.pain-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}
.pain-card .icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  background: var(--accent-soft);
  color: var(--accent-deep);
}
.pain-card h3 { font-size: 1.0625rem; font-weight: 600; margin-bottom: 8px; }
.pain-card p { font-size: 0.9375rem; color: var(--muted); }

/* ---------- Split section ---------- */

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 64px;
  align-items: center;
}

.check-list { list-style: none; display: grid; gap: 22px; margin-top: 32px; }
.check-list li { display: flex; gap: 14px; }
.check-list .check {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--green-soft);
  color: var(--green);
  display: grid;
  place-items: center;
  flex-shrink: 0;
  margin-top: 2px;
}
.check-list h3 { font-size: 1rem; font-weight: 600; margin-bottom: 4px; }
.check-list p { font-size: 0.9375rem; color: var(--muted); }

/* ---------- Feature grid ---------- */

.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 44px 40px; }
.feature .icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: var(--accent-soft);
  color: var(--accent-deep);
  margin-bottom: 16px;
}
.feature h3 { font-size: 1rem; font-weight: 600; margin-bottom: 6px; }
.feature p { font-size: 0.9375rem; color: var(--muted); }

/* ---------- Steps ---------- */

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; counter-reset: step; }
.step {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  position: relative;
}
.step .num {
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--accent-deep);
  background: var(--accent-soft);
  border: 1px solid var(--accent-border);
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  margin-bottom: 18px;
}
.step h3 { font-size: 1.0625rem; font-weight: 600; margin-bottom: 8px; }
.step p { font-size: 0.9375rem; color: var(--muted); }

/* ---------- Pricing ---------- */

.billing-toggle {
  display: inline-flex;
  align-items: center;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px;
  box-shadow: var(--shadow-sm);
  margin: 0 auto 48px;
}
.billing-toggle button {
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  border: none;
  background: none;
  color: var(--muted);
  padding: 9px 20px;
  border-radius: 999px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: background 0.15s ease, color 0.15s ease;
}
.billing-toggle button.active { background: var(--accent); color: #fff; }
.billing-toggle .save-tag {
  font-size: 0.6875rem;
  font-weight: 700;
  background: var(--green-soft);
  color: var(--green);
  padding: 2px 8px;
  border-radius: 999px;
}
.billing-toggle button.active .save-tag { background: rgba(255, 255, 255, 0.2); color: #fff; }

.price-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; align-items: stretch; }

.price-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 26px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  position: relative;
}
.price-card.featured {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent), var(--shadow-md);
}
.popular-flag {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: #fff;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: 999px;
  white-space: nowrap;
}

.price-card .tier { font-size: 1rem; font-weight: 600; color: var(--ink); }
.price-card .tier-for { font-size: 0.8125rem; color: var(--faint); margin: 2px 0 18px; }

.price-line { display: flex; align-items: baseline; gap: 5px; }
.price-line .amount {
  font-family: var(--font-display);
  font-size: 2.35rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.02em;
}
.price-line .per { font-size: 0.875rem; color: var(--faint); }
.price-note { font-size: 0.75rem; color: var(--faint); margin: 4px 0 20px; min-height: 1.2em; }

.price-feats { list-style: none; display: grid; gap: 10px; margin-bottom: 26px; flex: 1; align-content: start; }
.price-feats li { display: flex; gap: 9px; font-size: 0.875rem; color: var(--body); }
.price-feats li.strong { font-weight: 600; color: var(--ink); }
.price-feats svg { color: var(--green); flex-shrink: 0; margin-top: 3px; }

.price-card .btn { width: 100%; }

/* ---------- Pricing teaser (homepage) ---------- */

.tier-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 32px; }
.tier-mini {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  padding: 18px 20px;
  box-shadow: var(--shadow-sm);
}
.tier-mini .t { font-size: 0.875rem; font-weight: 600; color: var(--ink); }
.tier-mini .p { font-family: var(--font-display); font-size: 1.4rem; font-weight: 700; color: var(--ink); margin-top: 2px; }
.tier-mini .p span { font-family: var(--font-body); font-size: 0.75rem; font-weight: 500; color: var(--faint); }
.tier-mini .u { font-size: 0.75rem; color: var(--faint); }

/* ---------- FAQ ---------- */

.faq-list { display: grid; gap: 12px; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow-sm);
}
.faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--ink);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary .chev { transition: transform 0.2s ease; color: var(--faint); flex-shrink: 0; }
.faq-item[open] summary .chev { transform: rotate(180deg); }
.faq-item .faq-body { padding: 0 22px 18px; font-size: 0.9375rem; color: var(--muted); }

/* ---------- Lead form ---------- */

.lead-panel {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 40px;
  max-width: 640px;
  margin: 0 auto;
}

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.form-field { display: grid; gap: 6px; }
.form-field.full { grid-column: 1 / -1; }
.form-field label { font-size: 0.8125rem; font-weight: 600; color: var(--ink); }

.form-field input,
.form-field select {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  width: 100%;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.form-field input:focus,
.form-field select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.14);
}

.form-foot { font-size: 0.8125rem; color: var(--faint); text-align: center; margin-top: 14px; }

.form-success { text-align: center; padding: 24px 0; }
.form-success .icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--green-soft);
  color: var(--green);
  display: grid;
  place-items: center;
  margin: 0 auto 18px;
}
.form-success h3 { font-size: 1.25rem; margin-bottom: 8px; }
.form-success p { color: var(--muted); }

/* ---------- Notice ---------- */

.notice {
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  background: #fff;
  padding: 24px 28px;
  font-size: 0.875rem;
  color: var(--muted);
}
.notice h3 {
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.notice p { margin-bottom: 8px; }
.notice p:last-child { margin-bottom: 0; }
.notice strong { color: var(--ink); }

/* ---------- CTA band ---------- */

.cta-band {
  background: linear-gradient(135deg, #0f172a 0%, #11312e 60%, #134e4a 100%);
  color: #fff;
  text-align: center;
  padding: 88px 0;
}
.cta-band h2 { color: #fff; margin-bottom: 14px; }
.cta-band p { color: rgba(255, 255, 255, 0.75); font-size: 1.0625rem; max-width: 52ch; margin: 0 auto 32px; }
.cta-band .btn-primary { background: #fff; color: var(--accent-ink); box-shadow: var(--shadow-md); }
.cta-band .btn-primary:hover { background: var(--accent-soft); color: var(--accent-ink); }
.cta-band .btn-secondary { background: transparent; color: #fff; border-color: rgba(255, 255, 255, 0.35); }
.cta-band .btn-secondary:hover { border-color: rgba(255, 255, 255, 0.7); color: #fff; }

/* ---------- Footer ---------- */

.site-footer {
  background: var(--ink);
  color: #9aa6ba;
  padding: 64px 0 0;
  font-size: 0.875rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}
.site-footer .brand { color: #fff; margin-bottom: 14px; }
.site-footer .tagline { max-width: 34ch; }
.site-footer h4 {
  color: #fff;
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}
.site-footer ul { list-style: none; display: grid; gap: 10px; }
.site-footer a { color: #9aa6ba; }
.site-footer a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 22px 0;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 0.8125rem;
  color: #6d7a91;
}

/* ---------- Utility ---------- */

.hidden { display: none !important; }

.reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.55s ease, transform 0.55s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Responsive ---------- */

@media (max-width: 1024px) {
  .hero .container { grid-template-columns: 1fr; gap: 56px; padding-top: 60px; padding-bottom: 72px; }
  .hero .lede { max-width: 60ch; }
  .mock-cert { right: 8px; bottom: -18px; }
  .split { grid-template-columns: 1fr; gap: 48px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .price-grid { grid-template-columns: repeat(2, 1fr); }
  .tier-strip { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .section { padding: 72px 0; }
  .main-nav {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: #fff;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    padding: 12px 24px 20px;
  }
  .main-nav.open { display: flex; }
  .main-nav .nav-link { padding: 12px 0; border-bottom: 1px solid var(--line); }
  .main-nav .btn { margin-top: 14px; }
  .nav-toggle { display: block; }
  .card-grid, .steps, .chapter-grid { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr; gap: 32px; }
  .form-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .mock-side { display: none; }
  .mock-cert { display: none; }
  .lead-panel { padding: 28px 22px; }
}

@media (max-width: 560px) {
  .price-grid, .tier-strip { grid-template-columns: 1fr; }
  .hero-ctas .btn { width: 100%; }
  .mock-row { grid-template-columns: 1fr 1fr; }
  .mock-row .module, .mock-row.head .h-module { display: none; }
}