:root {
  --ink: #16212b;
  --ink-soft: #4a5866;
  --line: #e2e6ea;
  --paper: #fbfaf7;
  --card: #ffffff;
  --brand: #0f3d3e;
  --brand-soft: #e6f0ee;
  --accent: #f2b84b;
  --accent-ink: #5a3d00;
  --good: #1f7a4d;
  --warn: #9a5b00;
  --radius: 12px;
  --max: 1080px;
  --prose: 720px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
}
a { color: var(--brand); text-underline-offset: 3px; }
img { max-width: 100%; height: auto; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }

/* Header / footer */
.site-header { background: var(--brand); color: #fff; }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-top: 14px; padding-bottom: 14px; flex-wrap: wrap; }
.logo { color: #fff; text-decoration: none; font-weight: 700; font-size: 20px; letter-spacing: -0.01em; }
.logo span { color: var(--accent); }
.site-header nav { display: flex; gap: 20px; flex-wrap: wrap; }
.site-header nav a { color: #dbe9e6; text-decoration: none; font-size: 15px; font-weight: 500; }
.site-header nav a:hover { color: #fff; }
.site-footer { border-top: 1px solid var(--line); margin-top: 64px; padding: 28px 0 40px; font-size: 14px; color: var(--ink-soft); }

/* Headings */
h1, h2, h3 { line-height: 1.2; letter-spacing: -0.015em; }
h1 { font-family: 'Source Serif 4', Georgia, serif; font-size: clamp(30px, 5vw, 46px); margin: 0 0 14px; }
h2 { font-family: 'Source Serif 4', Georgia, serif; font-size: clamp(24px, 3.4vw, 30px); margin: 44px 0 12px; }
h3 { font-size: 19px; margin: 28px 0 8px; }

/* Hero */
.hero { padding: 56px 0 36px; }
.hero p.lead { font-size: 20px; color: var(--ink-soft); max-width: 640px; margin: 0; }
.eyebrow { text-transform: uppercase; letter-spacing: 0.08em; font-size: 13px; font-weight: 600; color: var(--brand); margin-bottom: 10px; }

/* Buttons */
.btn { display: inline-block; background: var(--accent); color: var(--accent-ink); font-weight: 700; text-decoration: none; padding: 12px 20px; border-radius: 10px; border: 0; font-size: 16px; cursor: pointer; font-family: inherit; }
.btn:hover { filter: brightness(0.96); }
.btn.secondary { background: var(--brand-soft); color: var(--brand); }
.btn.small { padding: 8px 14px; font-size: 14px; }

/* Cards & grids */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.grid { display: grid; gap: 18px; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.card h3 { margin-top: 0; }
.card .meta { font-size: 14px; color: var(--ink-soft); }
.guide-card { text-decoration: none; color: inherit; display: block; transition: border-color .15s; }
.guide-card:hover { border-color: var(--brand); }

/* Quiz */
.quiz { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 28px; }
.quiz-progress { height: 6px; background: var(--brand-soft); border-radius: 99px; overflow: hidden; margin-bottom: 20px; }
.quiz-progress span { display: block; height: 100%; background: var(--brand); width: 0; transition: width .25s; }
.quiz-q { font-size: 22px; font-weight: 700; margin: 0 0 16px; }
.quiz-options { display: grid; gap: 10px; }
.quiz-option { text-align: left; background: #fff; border: 1.5px solid var(--line); border-radius: 10px; padding: 14px 16px; font: inherit; cursor: pointer; color: var(--ink); }
.quiz-option:hover, .quiz-option:focus-visible { border-color: var(--brand); outline: none; background: var(--brand-soft); }
.quiz-option small { display: block; color: var(--ink-soft); }
.quiz-back { margin-top: 16px; background: none; border: 0; color: var(--ink-soft); cursor: pointer; font: inherit; padding: 0; text-decoration: underline; }
.result-top { border: 2px solid var(--brand); }
.result-badge { display: inline-block; background: var(--brand); color: #fff; font-size: 12px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; padding: 3px 10px; border-radius: 99px; margin-bottom: 8px; }
.results { display: grid; gap: 16px; }
.result h3 { margin: 0 0 4px; }
.result ul { margin: 10px 0 14px; padding-left: 20px; }

/* Prose (guides) */
.prose-wrap { max-width: var(--prose); margin: 0 auto; padding: 40px 20px 0; }
.prose p, .prose li { color: var(--ink); }
.prose ul, .prose ol { padding-left: 22px; }
.prose li { margin: 6px 0; }
.prose table { width: 100%; border-collapse: collapse; margin: 18px 0; font-size: 15px; display: block; overflow-x: auto; }
.prose th, .prose td { border-bottom: 1px solid var(--line); padding: 10px 12px; text-align: left; vertical-align: top; }
.prose th { background: var(--brand-soft); font-weight: 600; }
.prose code { background: #eef1f3; padding: 2px 6px; border-radius: 5px; font-size: 0.9em; }
.prose pre { background: #14202a; color: #e8eef2; padding: 16px; border-radius: 10px; overflow-x: auto; font-size: 14px; line-height: 1.55; }
.prose pre code { background: none; padding: 0; color: inherit; }
.prose blockquote { margin: 20px 0; padding: 14px 18px; background: var(--brand-soft); border-left: 4px solid var(--brand); border-radius: 0 10px 10px 0; }
.prose blockquote p { margin: 6px 0; }
.byline { color: var(--ink-soft); font-size: 14px; margin-bottom: 24px; }
.answer-box { background: var(--card); border: 2px solid var(--brand); border-radius: var(--radius); padding: 20px 22px; margin: 22px 0 30px; }
.answer-box p { margin: 6px 0; }
.answer-box .btn { margin-top: 10px; }
.notice { font-size: 14px; color: var(--ink-soft); background: #fff8e8; border: 1px solid #f3dfae; border-radius: 10px; padding: 10px 14px; }

@media (max-width: 600px) {
  body { font-size: 16px; }
  .quiz { padding: 20px; }
  .hero { padding: 36px 0 24px; }
}