:root {
  color-scheme: light;
  --ink: #17211f;
  --muted: #59645f;
  --paper: #f5f3ed;
  --surface: #fffef9;
  --line: #d9ddd6;
  --green: #173f35;
  --green-soft: #dfebe3;
  --accent: #dff36b;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); }
a { color: inherit; text-underline-offset: 4px; }
.wrap { width: min(760px, calc(100% - 32px)); margin-inline: auto; }
.wide { width: min(1040px, calc(100% - 32px)); margin-inline: auto; }
.skip-link { position: fixed; left: 16px; top: 12px; z-index: 5; transform: translateY(-160%); padding: 8px 12px; border: 2px solid var(--ink); border-radius: 8px; background: #fff; }
.skip-link:focus { transform: translateY(0); }
.site-header { border-bottom: 1px solid var(--line); background: var(--surface); }
.header-inner { min-height: 62px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { font-weight: 750; text-decoration: none; letter-spacing: -.02em; }
.section-link { color: var(--muted); font-size: .9rem; }

.hero { padding-block: 66px 48px; }
.eyebrow { margin: 0 0 12px; color: var(--green); font-size: .78rem; font-weight: 750; letter-spacing: .1em; text-transform: uppercase; }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 940px; margin-bottom: 22px; font-size: clamp(2.45rem, 8vw, 5.1rem); font-weight: 680; line-height: 1; letter-spacing: -.055em; }
h2 { margin: 48px 0 16px; font-size: clamp(1.65rem, 4.5vw, 2.45rem); font-weight: 650; line-height: 1.13; letter-spacing: -.035em; }
h3 { margin: 0 0 6px; font-size: 1.08rem; line-height: 1.3; }
.dek { max-width: 760px; margin-bottom: 0; color: #384740; font-size: clamp(1.05rem, 2vw, 1.25rem); }
.scope { margin-top: 22px; padding: 14px 16px; border-left: 4px solid var(--green); background: var(--green-soft); color: #33413c; }
.article { padding-bottom: 70px; }
.article > p, .article > ul, .article > ol { color: #36423e; }

.concept-grid, .option-grid { display: grid; gap: 14px; margin-top: 24px; }
.concept-card, .option-card, .example, .decision-box { padding: 22px; border: 1px solid var(--line); border-radius: 18px; background: var(--surface); }
.concept-card p, .option-card p { margin: 0; color: var(--muted); }
.concept-card strong { display: block; margin-bottom: 5px; color: var(--green); }
.example { margin-block: 24px; border-color: #b8c9bf; background: var(--green-soft); }
.example > :last-child, .decision-box > :last-child { margin-bottom: 0; }
.label { display: inline-block; margin-bottom: 10px; padding: 3px 8px; border-radius: 999px; background: var(--green); color: #fff; font-size: .75rem; font-weight: 750; letter-spacing: .05em; text-transform: uppercase; }

.table-wrap { margin-block: 24px; overflow-x: auto; border: 1px solid var(--line); border-radius: 16px; background: var(--surface); }
table { width: 100%; border-collapse: collapse; min-width: 670px; }
th, td { padding: 14px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { background: #edf1ec; font-size: .86rem; }
tbody tr:last-child td { border-bottom: 0; }
.comparison td:first-child { font-weight: 700; }
.plain-list { padding-left: 20px; }
.plain-list li + li { margin-top: 9px; }

.faq { margin-top: 52px; }
.faq details { border-top: 1px solid var(--line); }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { padding: 16px 3px; font-weight: 700; cursor: pointer; }
.faq details p { margin: 0; padding: 0 3px 17px; color: var(--muted); }
.cta-box { margin-top: 54px; padding: 26px; border-radius: 20px; background: var(--green); color: #fff; }
.cta-box h2 { margin-top: 0; font-size: clamp(1.45rem, 4vw, 2rem); }
.cta-box p { color: #dbe8e2; }
.cta { display: inline-block; padding: 11px 15px; border: 2px solid var(--accent); border-radius: 10px; background: var(--accent); color: var(--ink); font-weight: 720; text-decoration: none; }
.cta:focus-visible, a:focus-visible, summary:focus-visible { outline: 3px solid #7558ff; outline-offset: 3px; }
.site-footer { padding-block: 24px; border-top: 1px solid var(--line); color: var(--muted); font-size: .88rem; }
.site-footer p { margin: 0; }

@media (min-width: 760px) {
  .hero { padding-block: 88px 60px; }
  .concept-grid { grid-template-columns: repeat(3, 1fr); }
  .option-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}