:root {
  --ink: #17212b;
  --muted: #425466;
  --paper: #f4f1e9;
  --card: #fffdf8;
  --line: #cbd2d8;
  --accent: #c85a32;
  --accent-soft: #f5ded2;
  --dark: #101820;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 17px;
  line-height: 1.75;
}
a { color: #9b3f22; text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--ink); }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }
.skip-link {
  position: absolute; left: 1rem; top: -5rem; z-index: 10;
  background: var(--dark); color: white; padding: .7rem 1rem; border-radius: 4px;
}
.skip-link:focus { top: 1rem; }
.shell { width: min(var(--max), calc(100% - 2.5rem)); margin-inline: auto; }
.site-header {
  color: #f7f4ec;
  background:
    linear-gradient(90deg, rgba(200,90,50,.14) 1px, transparent 1px) 0 0 / 48px 48px,
    var(--dark);
  border-bottom: 7px solid var(--accent);
}
.header-grid { display: grid; grid-template-columns: minmax(0, 1.65fr) minmax(260px, .7fr); gap: 3rem; align-items: end; padding: 5rem 0 4rem; }
.eyebrow, .section-number, .card-label {
  margin: 0 0 1rem; font-size: .78rem; font-weight: 700; letter-spacing: .16em; text-transform: uppercase;
}
.eyebrow { color: #f0b69d; }
h1 { margin: 0; font-size: clamp(2.5rem, 6vw, 5.2rem); line-height: 1.08; letter-spacing: -.04em; font-weight: 760; }
h2 { margin: 0 0 1.2rem; font-size: clamp(1.7rem, 3vw, 2.7rem); line-height: 1.25; letter-spacing: -.025em; }
h3 { margin: 0 0 .5rem; font-size: 1.2rem; }
p { margin: 0 0 1rem; }
.lede { max-width: 46rem; margin-top: 1.7rem; color: #d5dde4; font-size: 1.16rem; }
.price-card { background: #f7f4ec; color: var(--ink); border: 1px solid #d5dde4; border-top: 5px solid var(--accent); padding: 1.7rem; box-shadow: 14px 14px 0 rgba(200,90,50,.22); }
.price { font-size: 3.4rem; line-height: 1; margin: 0; font-weight: 780; letter-spacing: -.04em; font-variant-numeric: tabular-nums; }
.fine { font-size: .88rem; color: var(--muted); }
main > section { padding: 4.5rem 0; border-bottom: 1px solid var(--line); }
.notice { display: grid; grid-template-columns: 1fr 1fr; gap: 0 3rem; }
.notice .section-number, .notice h2 { grid-column: 1; }
.notice p { grid-column: 2; }
.notice p:first-of-type { margin-top: 0; }
.section-number { color: var(--accent); font-variant-numeric: tabular-nums; }
.source-quote {
  margin: 2rem 0 1.5rem; padding: 2rem clamp(1.3rem, 4vw, 3rem);
  background: var(--card); border-left: 7px solid var(--accent); border-top: 1px solid var(--line); border-right: 1px solid var(--line); border-bottom: 1px solid var(--line);
  color: #25313d; font-size: .98rem;
}
.source-quote p { max-width: 72ch; }
.quote-foot { padding-top: 1rem; margin: 0; border-top: 1px solid var(--line); color: var(--muted); font-size: .9rem; }
.disclaimer { display: inline-block; padding: .7rem 1rem; background: var(--accent-soft); border: 1px solid #e3b6a3; font-size: .96rem; }
.feature-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.feature-grid article { background: var(--card); padding: 1.6rem; }
.feature-grid span { display: block; color: var(--accent); font-size: .8rem; letter-spacing: .12em; font-weight: 750; margin-bottom: 2.4rem; }
.feature-grid p { margin: 0; color: var(--muted); font-size: .94rem; }
.asset-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.3rem; }
figure { margin: 0; padding: .7rem; background: var(--card); border: 1px solid var(--line); }
img { display: block; width: 100%; height: auto; border: 1px solid #e0e4e8; }
figcaption { padding-top: .65rem; color: var(--muted); font-size: .84rem; }
.closing { border-bottom: 0; }
.closing p { max-width: 72ch; }
.site-footer { padding: 2rem 0; background: var(--dark); color: #cbd5dd; font-size: .9rem; }
.site-footer a { color: #f0b69d; }
.noscript { padding: 2rem; background: var(--card); border-left: 7px solid var(--accent); }
.noscript p { max-width: 80ch; }

@media (max-width: 900px) {
  .header-grid, .notice { grid-template-columns: 1fr; }
  .notice .section-number, .notice h2, .notice p { grid-column: 1; }
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .asset-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 620px) {
  body { font-size: 16px; }
  .shell { width: min(100% - 1.5rem, var(--max)); }
  .header-grid { padding: 3rem 0; gap: 2rem; }
  main > section { padding: 3rem 0; }
  .feature-grid, .asset-grid { grid-template-columns: 1fr; }
  .source-quote { padding: 1.2rem; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}