:root {
  --bg: #faf7f2;
  --bg-elev: #ffffff;
  --fg-1: #1c1a17;
  --fg-2: #4a463f;
  --fg-3: #8a847a;
  --border: #ece7df;
  --coral: #e8674c;
  --coral-soft: #fdeee9;
  --max: 760px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14130f;
    --bg-elev: #1e1c18;
    --fg-1: #f4f1ea;
    --fg-2: #c8c2b6;
    --fg-3: #908a7e;
    --border: #2b2822;
    --coral: #ff7a63;
    --coral-soft: #2a1f1b;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg-1);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.65;
  font-size: 17px;
}
a { color: var(--coral); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 22px; }
header.site {
  border-bottom: 1px solid var(--border);
  background: var(--bg-elev);
  position: sticky; top: 0; z-index: 10;
}
header.site .wrap {
  display: flex; align-items: center; justify-content: space-between;
  height: 62px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 19px; color: var(--fg-1); }
.brand .mark {
  width: 30px; height: 30px; border-radius: 9px; overflow: hidden;
  background: var(--coral); color: #fff;
  display: grid; place-items: center; font-weight: 800; font-size: 16px;
}
.brand .mark img, .hero .mark-lg img { width: 100%; height: 100%; object-fit: cover; display: block; }
nav.site a { color: var(--fg-2); font-size: 15px; margin-left: 18px; }
.hero { text-align: center; padding: 72px 0 40px; }
.hero .mark-lg {
  width: 76px; height: 76px; border-radius: 22px; margin: 0 auto 22px; overflow: hidden;
  background: var(--coral); color: #fff;
  display: grid; place-items: center; font-weight: 800; font-size: 40px;
}
.hero h1 { font-size: 40px; line-height: 1.15; margin: 0 0 14px; letter-spacing: -0.02em; }
.hero p.lead { font-size: 19px; color: var(--fg-2); max-width: 540px; margin: 0 auto 28px; }
.cta { display: inline-flex; gap: 12px; flex-wrap: wrap; justify-content: center; }
.btn {
  display: inline-block; padding: 12px 22px; border-radius: 999px;
  background: var(--coral); color: #fff; font-weight: 600;
}
.btn.secondary { background: transparent; color: var(--fg-1); border: 1px solid var(--border); }
.btn:hover { text-decoration: none; opacity: .92; }
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin: 40px 0 16px; }
.card { background: var(--bg-elev); border: 1px solid var(--border); border-radius: 16px; padding: 22px; }
.card h3 { margin: 0 0 6px; font-size: 17px; }
.card p { margin: 0; color: var(--fg-2); font-size: 15px; }
main.doc { padding: 44px 0 72px; }
main.doc h1 { font-size: 32px; margin: 0 0 6px; letter-spacing: -0.02em; }
main.doc .sub { color: var(--fg-3); font-size: 15px; margin: 0 0 36px; }
main.doc h2 { font-size: 20px; margin: 38px 0 10px; }
main.doc h3 { font-size: 17px; margin: 24px 0 6px; }
main.doc p, main.doc li { color: var(--fg-2); }
main.doc strong { color: var(--fg-1); }
main.doc ul { padding-left: 22px; }
main.doc li { margin: 6px 0; }
.callout {
  background: var(--coral-soft); border: 1px solid var(--border);
  border-radius: 14px; padding: 16px 18px; margin: 20px 0;
}
.callout p { margin: 0; color: var(--fg-1); }
table.subproc { width: 100%; border-collapse: collapse; margin: 14px 0; font-size: 15px; }
table.subproc th, table.subproc td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); vertical-align: top; }
table.subproc th { color: var(--fg-1); font-weight: 600; }
table.subproc td { color: var(--fg-2); }
footer.site { border-top: 1px solid var(--border); background: var(--bg-elev); padding: 30px 0; }
footer.site .wrap { display: flex; flex-wrap: wrap; gap: 8px 20px; justify-content: space-between; color: var(--fg-3); font-size: 14px; }
footer.site a { color: var(--fg-2); }
@media (max-width: 560px) {
  .hero h1 { font-size: 32px; }
  body { font-size: 16px; }
}