:root {
  color-scheme: light;
  --ink: #23312c;
  --muted: #64716c;
  --paper: #fffdf8;
  --canvas: #f1f3ed;
  --line: #d9ded6;
  --green: #176b55;
  --green-dark: #0d493a;
  --green-soft: #e8f4ee;
  --amber: #9b5c13;
  --amber-soft: #fff3dc;
  --red: #93433b;
  --red-soft: #fbecea;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--canvas);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  line-height: 1.8;
}
a { color: var(--green-dark); text-underline-offset: .18em; }
a:focus-visible { outline: 3px solid var(--amber); outline-offset: 4px; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 1rem; top: 1rem; z-index: 20; padding: .65rem 1rem; color: #fff; background: var(--green-dark); border-radius: .5rem; }
.page { width: min(100% - 2rem, 940px); margin: 2rem auto 4rem; background: var(--paper); border: 1px solid var(--line); border-radius: 22px; overflow: hidden; }
.site-nav { display: flex; flex-wrap: wrap; gap: .5rem; padding: .85rem clamp(1.25rem, 6vw, 4rem); color: var(--muted); background: #f6f7f3; border-bottom: 1px solid var(--line); font-size: .84rem; }
.site-nav a { font-weight: 700; }
.hero { padding: clamp(2.2rem, 7vw, 4.5rem) clamp(1.3rem, 7vw, 4.5rem); color: #fff; background: linear-gradient(145deg, #0d493a, #176b55); }
.eyebrow { margin: 0 0 .7rem; color: #cce8dc; font-size: .8rem; font-weight: 800; letter-spacing: .12em; }
h1 { margin: 0; font-size: clamp(2rem, 5vw, 3.35rem); line-height: 1.2; }
.lead { max-width: 720px; margin: 1.2rem 0 0; color: #e4f2ec; }
.meta { display: flex; flex-wrap: wrap; gap: .45rem 1rem; margin-top: 1.1rem; color: #cce8dc; font-size: .82rem; }
main { padding: clamp(2rem, 6vw, 4.5rem); }
h2 { margin: 3.4rem 0 .9rem; font-size: clamp(1.4rem, 3vw, 2rem); line-height: 1.35; }
h3 { margin: 2.2rem 0 .55rem; color: var(--green-dark); font-size: 1.15rem; }
p, li { max-width: 74ch; }
li { margin: .45rem 0; }
.disclosure, .scope, .note, .warning, .verdict { padding: 1rem 1.15rem; border-radius: 12px; }
.disclosure { margin-top: 0; background: var(--amber-soft); border-left: 4px solid var(--amber); }
.scope { color: var(--muted); background: #f6f7f3; border: 1px solid var(--line); }
.note { background: var(--green-soft); border-left: 4px solid var(--green); }
.warning { background: var(--red-soft); border-left: 4px solid var(--red); }
.verdict { margin: 1.5rem 0; background: var(--green-soft); border: 1px solid #bddccb; }
.verdict strong { display: block; margin-bottom: .35rem; color: var(--green-dark); font-size: 1.08rem; }
.table-wrap { overflow-x: auto; margin: 1.2rem 0; border: 1px solid var(--line); border-radius: 14px; }
table { width: 100%; min-width: 680px; border-collapse: collapse; background: #fff; }
caption { padding: .9rem 1rem; text-align: left; color: var(--green-dark); font-weight: 800; background: var(--green-soft); }
th, td { padding: .85rem .9rem; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); }
th { background: #f6f7f3; }
tr:last-child td { border-bottom: 0; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; padding: 0; list-style: none; counter-reset: step; }
.steps li { min-height: 180px; padding: 1.2rem; background: #fff; border: 1px solid var(--line); border-radius: 15px; }
.steps li::before { counter-increment: step; content: counter(step); display: grid; place-items: center; width: 2rem; height: 2rem; margin-bottom: .75rem; color: #fff; background: var(--green); border-radius: 50%; font-weight: 800; }
.steps b { display: block; margin-bottom: .4rem; color: var(--green-dark); }
.decision { display: grid; grid-template-columns: repeat(2, 1fr); gap: .9rem; }
.decision article { padding: 1.15rem; background: #fff; border: 1px solid var(--line); border-radius: 14px; }
.decision h3 { margin-top: 0; }
.checklist { padding: 1.1rem 1.1rem 1.1rem 2.2rem; background: #fff; border: 1px solid var(--line); border-radius: 14px; }
.sources { font-size: .92rem; }
footer { display: flex; flex-wrap: wrap; gap: .8rem 1.2rem; padding: 1.2rem clamp(1.3rem, 7vw, 4.5rem) 2rem; color: var(--muted); background: #f6f7f3; border-top: 1px solid var(--line); font-size: .84rem; }
@media (max-width: 720px) {
  .page { width: 100%; margin: 0; border: 0; border-radius: 0; }
  .steps, .decision { grid-template-columns: 1fr; }
  h1 { font-size: 2rem; }
}
@media print {
  body { background: #fff; }
  .page { width: 100%; margin: 0; border: 0; }
  .hero { color: #000; background: #fff; border-bottom: 2px solid #000; }
  .lead, .meta { color: #222; }
}