:root {
  color-scheme: light dark;
  --bg: #f5f2eb;
  --paper: #fffdf8;
  --ink: #1b1a17;
  --muted: #666159;
  --line: #d9d3c8;
  --accent: #e85d3f;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Yu Gothic", sans-serif;
  line-height: 1.75;
}
a { color: inherit; text-underline-offset: 3px; }
.header { border-bottom: 1px solid var(--line); background: color-mix(in srgb, var(--paper) 92%, transparent); }
.header-inner, main, .footer { width: min(940px, calc(100% - 40px)); margin: 0 auto; }
.header-inner { min-height: 68px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { font-weight: 800; text-decoration: none; letter-spacing: -.02em; }
.brand::before { content: "4"; display: inline-grid; place-items: center; width: 30px; height: 30px; margin-right: 9px; color: white; background: var(--accent); border-radius: 8px; }
nav { display: flex; gap: 18px; flex-wrap: wrap; font-size: .9rem; }
main { padding: 64px 0 80px; }
.hero { padding: 34px; border: 1px solid var(--line); background: var(--paper); border-radius: 20px; }
.eyebrow { color: var(--accent); font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
h1 { margin: .15em 0 .45em; font-size: clamp(2rem, 6vw, 3.8rem); line-height: 1.12; letter-spacing: -.04em; }
h2 { margin-top: 2.2em; line-height: 1.35; }
h3 { margin-top: 1.8em; }
.lead { color: var(--muted); font-size: 1.08rem; max-width: 700px; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; margin-top: 24px; }
.card { display: block; padding: 22px; border: 1px solid var(--line); border-radius: 14px; background: var(--paper); text-decoration: none; }
.card strong { display: block; margin-bottom: 5px; }
.card span, .meta, .note { color: var(--muted); }
.legal { max-width: 760px; }
.meta { padding: 14px 18px; border-left: 4px solid var(--accent); background: var(--paper); }
.notice { padding: 18px; border: 1px solid var(--line); border-radius: 12px; background: var(--paper); }
li + li { margin-top: .45em; }
.footer { padding: 24px 0 40px; color: var(--muted); font-size: .85rem; }
@media (prefers-color-scheme: dark) {
  :root { --bg: #151513; --paper: #20201d; --ink: #f4f0e8; --muted: #b8b2a8; --line: #3b3934; --accent: #ff795c; }
}
@media (max-width: 640px) {
  .header-inner { align-items: flex-start; flex-direction: column; padding: 16px 0; }
  main { padding-top: 36px; }
  .hero { padding: 24px; }
}