:root {
  --ink: #1c1915;
  --muted: #5c564c;
  --paper: #f3efe6;
  --card: #fffcf6;
  --line: #e3d9c8;
  --copper: #9a3412;
  --copper-deep: #7c2d12;
  --ok: #166534;
  --bad: #991b1b;
  --warn: #92400e;
  --shadow: 0 10px 30px rgba(40, 28, 12, 0.06);
  --serif: "Iowan Old Style", Palatino, "Palatino Linotype", Georgia, serif;
  --sans: "Avenir Next", "Segoe UI", Helvetica, Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.02rem;
  line-height: 1.55;
}
a { color: var(--copper-deep); }
a:hover { color: var(--copper); }
.wrap { width: min(1080px, calc(100% - 32px)); margin: 0 auto; }
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: rgba(243, 239, 230, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(8px);
}
.header-row { display: flex; align-items: center; gap: 16px; min-height: 64px; }
.brand { display: flex; gap: 10px; align-items: center; text-decoration: none; color: inherit; }
.mark {
  width: 36px; height: 36px; display: grid; place-items: center;
  background: var(--ink); color: #f6e7d4; font-weight: 700; letter-spacing: 0.04em;
  border-radius: 4px; font-size: 0.78rem;
}
.brand-name { font-family: var(--serif); font-weight: 700; font-size: 1.05rem; }
.brand-sub { color: var(--muted); font-size: 0.75rem; letter-spacing: 0.04em; }
.menu-btn {
  margin-left: auto; border: 1px solid var(--line); background: var(--card);
  padding: 8px 12px; border-radius: 4px; font: inherit;
}
nav { display: none; }
nav.open { display: flex; flex-direction: column; position: absolute; left: 0; right: 0; top: 64px;
  background: var(--card); border-bottom: 1px solid var(--line); padding: 8px 16px 16px; }
nav a { text-decoration: none; color: var(--ink); padding: 10px 4px; font-weight: 600; }
nav a[aria-current="page"] { color: var(--copper); }
.trust-bar { background: var(--ink); color: #f3eadf; font-size: 0.82rem; }
.trust-bar .wrap { display: flex; gap: 14px; flex-wrap: wrap; padding: 8px 0; }
.trust-bar a { color: #f6d7b8; }
.hero { padding: 36px 0 12px; }
.kicker { letter-spacing: 0.12em; text-transform: uppercase; font-size: 0.75rem; color: var(--copper); font-weight: 700; margin: 0 0 8px; }
h1 { font-family: var(--serif); font-size: clamp(1.8rem, 5vw, 3.1rem); line-height: 1.12; margin: 0 0 12px; letter-spacing: -0.02em; }
.lede { font-size: 1.08rem; color: var(--muted); max-width: 42rem; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; margin: 18px 0; }
.btn, button.btn {
  display: inline-block; background: var(--copper); color: white; text-decoration: none;
  border: 0; border-radius: 4px; padding: 11px 16px; font: inherit; font-weight: 700; cursor: pointer;
}
.btn.secondary { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.grid-2 { display: grid; gap: 14px; }
.card, .panel {
  background: var(--card); border: 1px solid var(--line); border-radius: 8px;
  padding: 16px 16px 14px; box-shadow: var(--shadow);
}
.card h2, .card h3, .panel h2 { font-family: var(--serif); margin: 0 0 6px; font-size: 1.25rem; }
.card p, .panel p { margin: 0 0 8px; color: var(--muted); }
.tag { display: inline-block; font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--copper); font-weight: 700; }
.page { padding: 22px 0 48px; }
.crumb { color: var(--muted); font-size: 0.85rem; }
h2 { font-family: var(--serif); font-size: 1.55rem; margin: 1.4rem 0 0.4rem; }
h3 { font-size: 1.05rem; margin: 1.1rem 0 0.3rem; }
.note, .warn, .okbox {
  border-left: 3px solid var(--copper); background: #fff8ef; padding: 10px 12px; margin: 14px 0;
}
.warn { border-color: var(--warn); background: #fff7ed; }
.okbox { border-color: var(--ok); background: #f0fdf4; }
label { display: block; font-weight: 650; font-size: 0.92rem; margin: 10px 0 4px; }
input, select {
  width: 100%; max-width: 420px; padding: 10px 12px; border: 1px solid var(--line);
  border-radius: 4px; font: inherit; background: white;
}
.row { display: grid; gap: 10px; }
.result {
  font-family: var(--mono); background: var(--ink); color: #f6efe4;
  padding: 14px; border-radius: 8px; margin-top: 14px; overflow-x: auto;
}
.result .big { font-size: 1.35rem; color: #f6d7b8; }
.fail { color: #fecaca; }
.pass { color: #bbf7d0; }
table { width: 100%; border-collapse: collapse; font-size: 0.95rem; margin: 10px 0 16px; }
th, td { border-bottom: 1px solid var(--line); text-align: left; padding: 8px 6px; vertical-align: top; }
th { font-size: 0.78rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); }
.site-footer { border-top: 1px solid var(--line); padding: 28px 0 18px; background: #ebe4d6; }
.footer-grid { display: grid; gap: 18px; }
.footer-grid a { display: block; text-decoration: none; margin: 4px 0; }
.footer-base { display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; color: var(--muted); font-size: 0.85rem; margin-top: 18px; }
.formula { font-family: var(--mono); background: #fff; border: 1px solid var(--line); padding: 8px 10px; border-radius: 4px; }
ul { padding-left: 1.1rem; }
.list-cards { display: grid; gap: 12px; }
@media (min-width: 760px) {
  .menu-btn { display: none; }
  nav, nav.open { display: flex; position: static; flex-direction: row; gap: 16px; background: transparent; border: 0; padding: 0; margin-left: auto; }
  .grid-2 { grid-template-columns: 1.3fr 0.7fr; align-items: start; }
  .list-cards { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
  .row.two { grid-template-columns: 1fr 1fr; }
}