:root {
  color-scheme: light;
  --bg: #f7f7f4;
  --paper: #ffffff;
  --ink: #1f2933;
  --muted: #5f6f7c;
  --line: #d9e0e4;
  --teal: #0f766e;
  --coral: #c2413b;
  --amber: #b7791f;
  --blue: #2b5b84;
  --sage: #657a48;
  --shadow: 0 14px 32px rgba(31, 41, 51, 0.08);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(15, 118, 110, 0.08), transparent 420px),
    var(--bg);
  line-height: 1.6;
}

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

.skip-link {
  position: absolute;
  left: -999px;
  top: 8px;
  z-index: 20;
  background: var(--paper);
  color: var(--blue);
  padding: 8px 10px;
  border: 1px solid var(--line);
}

.skip-link:focus { left: 8px; }

.wrap {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

header {
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(12px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 70px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 800;
  letter-spacing: 0;
}

.mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  color: #fff;
  background: linear-gradient(135deg, var(--teal), var(--blue));
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 14px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 10px 16px;
  border: 1px solid var(--ink);
  border-radius: 8px;
  background: var(--ink);
  color: #fff;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
}

.button:hover { text-decoration: none; background: #111827; }
.button.secondary { background: var(--paper); color: var(--ink); }
.button.secondary:hover { background: #eef4f4; }

.hero {
  padding: 54px 0 30px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: 28px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--teal);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

h1, h2, h3 {
  margin: 0;
  line-height: 1.16;
  letter-spacing: 0;
}

h1 {
  max-width: 840px;
  font-size: clamp(34px, 6vw, 68px);
}

h2 { font-size: clamp(24px, 3vw, 36px); }
h3 { font-size: 20px; }

.lede {
  max-width: 720px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 24px;
}

.hero-panel {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  padding: 18px;
}

.type-wheel {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.type-pill {
  display: grid;
  place-items: center;
  min-height: 48px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: #fdfdfb;
  font-weight: 800;
}

.type-pill:nth-child(4n+1) { border-top-color: var(--teal); }
.type-pill:nth-child(4n+2) { border-top-color: var(--coral); }
.type-pill:nth-child(4n+3) { border-top-color: var(--amber); }
.type-pill:nth-child(4n+4) { border-top-color: var(--sage); }

main { padding-bottom: 56px; }

.section {
  padding: 36px 0;
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 16px;
}

.section-head p {
  max-width: 650px;
  margin: 8px 0 0;
  color: var(--muted);
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  padding: 18px;
}

.card p { color: var(--muted); }
.card p:last-child { margin-bottom: 0; }

.quiz {
  display: grid;
  gap: 14px;
}

.question {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
}

.question legend {
  padding: 0;
  font-weight: 800;
}

.choices {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 12px;
}

.choice {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 46px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfb;
  cursor: pointer;
}

.choice:has(input:checked) {
  border-color: var(--teal);
  background: #e9f5f3;
}

.result-banner {
  display: none;
  margin-top: 16px;
  background: #173b3f;
  color: #fff;
  border-radius: 8px;
  padding: 18px;
}

.result-banner.is-visible { display: block; }
.result-banner a { color: #dff9f4; font-weight: 800; }

.type-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.type-card {
  display: block;
  min-height: 150px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  color: var(--ink);
}

.type-card:hover { text-decoration: none; border-color: var(--teal); }
.type-code { font-size: 24px; font-weight: 900; }
.type-role { margin-top: 4px; color: var(--teal); font-weight: 800; }
.type-card p { margin: 10px 0 0; color: var(--muted); font-size: 14px; }

.result-hero {
  padding: 44px 0 26px;
  border-bottom: 1px solid var(--line);
}

.result-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 18px;
  align-items: start;
}

.article {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  padding: 24px;
}

.article h2 { margin-top: 28px; font-size: 26px; }
.article h2:first-child { margin-top: 0; }
.article ul { padding-left: 22px; }
.article li + li { margin-top: 7px; }

.sidebar {
  display: grid;
  gap: 14px;
  position: sticky;
  top: 16px;
}

.affiliate {
  border-top: 4px solid var(--amber);
}

.disclosure {
  font-size: 13px;
  color: var(--muted);
}

.book-list {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

.book-link {
  display: block;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: #fffdf7;
}

.book-link:hover { text-decoration: none; border-color: var(--amber); }

.breadcrumb {
  margin-bottom: 14px;
  color: var(--muted);
  font-size: 14px;
}

.footer {
  padding: 28px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  background: #fff;
  font-size: 14px;
}

.footer .wrap {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}

@media (max-width: 860px) {
  .hero-grid,
  .result-layout {
    grid-template-columns: 1fr;
  }

  .grid,
  .type-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .sidebar { position: static; }
}

@media (max-width: 560px) {
  .nav { align-items: flex-start; flex-direction: column; padding: 14px 0; }
  .nav-links { width: 100%; justify-content: space-between; }
  .choices,
  .grid,
  .type-grid {
    grid-template-columns: 1fr;
  }

  .type-wheel { grid-template-columns: repeat(2, 1fr); }
}