:root {
  color-scheme: light;
  --ink: #18211f;
  --muted: #5c6763;
  --paper: #f6f5f0;
  --card: #ffffff;
  --line: #d9ded8;
  --accent: #166a50;
  --accent-deep: #0b4a37;
  --warning: #8b4b00;
  --warning-bg: #fff5e7;
  --radius: 18px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.55;
}
a { color: var(--accent-deep); text-underline-offset: 3px; }
a:hover { color: var(--accent); }
.shell { width: min(1080px, calc(100% - 32px)); margin: 0 auto; }
.topbar { border-bottom: 1px solid var(--line); background: rgba(246,245,240,.96); position: sticky; top: 0; z-index: 2; }
.topbar .shell { min-height: 68px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { color: var(--ink); font-weight: 760; letter-spacing: -.02em; text-decoration: none; }
.brand span { color: var(--accent); }
nav { display: flex; flex-wrap: wrap; gap: 14px; font-size: 14px; }
nav a { text-decoration: none; }
main { padding: 56px 0 72px; }
.eyebrow { color: var(--accent-deep); font-size: 14px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
h1, h2, h3 { line-height: 1.12; letter-spacing: -.035em; }
h1 { font-size: clamp(38px, 6vw, 70px); max-width: 850px; margin: 12px 0 24px; }
h2 { font-size: clamp(28px, 3.7vw, 42px); margin: 52px 0 18px; }
h3 { font-size: 21px; margin: 0 0 10px; }
.lead { font-size: clamp(20px, 2.5vw, 26px); max-width: 780px; color: #3b4843; }
.notice { border: 1px solid #edcc94; border-radius: 14px; padding: 16px 18px; background: var(--warning-bg); color: #623600; max-width: 860px; }
.notice strong { color: var(--warning); }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 28px 0; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.card p { margin: 0; color: var(--muted); }
.price { font-size: 44px; font-weight: 800; color: var(--accent-deep); line-height: 1; margin-bottom: 8px; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; counter-reset: step; }
.step { background: var(--card); border-radius: var(--radius); padding: 22px; border: 1px solid var(--line); }
.step::before { counter-increment: step; content: counter(step); display: grid; place-items: center; width: 32px; height: 32px; margin-bottom: 18px; border-radius: 50%; background: #dceee7; color: var(--accent-deep); font-weight: 800; }
.plain-list { padding-left: 22px; }
.plain-list li { margin: 9px 0; }
.document { max-width: 790px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(24px, 5vw, 56px); }
.document h1 { font-size: clamp(32px, 4.5vw, 52px); }
.document h2 { font-size: 28px; margin-top: 38px; }
.document h3 { margin-top: 28px; }
.document p, .document li { color: #36423d; }
.metadata { color: var(--muted); font-size: 14px; }
.footer { border-top: 1px solid var(--line); padding: 28px 0 42px; color: var(--muted); font-size: 14px; }
.footer .shell { display: flex; justify-content: space-between; gap: 18px; flex-wrap: wrap; }
@media (max-width: 720px) {
  .topbar .shell { min-height: 78px; align-items: flex-start; padding-top: 14px; padding-bottom: 12px; flex-direction: column; gap: 6px; }
  main { padding-top: 38px; }
  .grid, .steps { grid-template-columns: 1fr; }
}