:root {
  --navy: #1f3864;
  --navy-soft: #35507f;
  --ink: #15181d;
  --muted: #5e6672;
  --faint: #8a9199;
  --rule: #d9dde3;
  --rule-soft: #eceff3;
  --paper: #ffffff;
  --wash: #f6f7f9;
  --good: #1d6b3f;
  --warn: #8a5a00;
  --bad: #9b2226;
  --warn-wash: #fdf6e6;
  --bad-wash: #fdf0f0;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--wash);
  color: var(--ink);
  font: 15px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-variant-numeric: tabular-nums;
}

h1, h2, h3, .serif {
  font-family: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 16px 64px; }

/* ---------- masthead ---------- */
.masthead {
  background: var(--navy);
  color: #fff;
  padding: 26px 0 22px;
  margin-bottom: 28px;
}
.masthead .wrap { padding-bottom: 0; }
.masthead h1 { margin: 0 0 4px; font-size: 25px; color: #fff; }
.masthead p { margin: 0; color: #c3cde0; font-size: 13.5px; max-width: 70ch; }
.eyebrow {
  text-transform: uppercase; letter-spacing: 0.1em;
  font-size: 10.5px; font-weight: 700; color: #92a6c9; margin-bottom: 8px;
}

/* ---------- cards ---------- */
.card {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 3px;
  padding: 22px 24px;
  margin-bottom: 20px;
}
.card > h2 {
  margin: 0 0 2px; font-size: 17px; color: var(--navy);
}
.card > h2 + .sub { margin: 0 0 18px; color: var(--muted); font-size: 13px; }

.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 860px) { .grid2 { grid-template-columns: 1fr; } }

/* ---------- form ---------- */
.fields { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 14px 18px; }
@media (max-width: 860px) { .fields { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .fields { grid-template-columns: 1fr; } }

.f label {
  display: block; font-size: 11.5px; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--muted); margin-bottom: 5px;
}
.f input, .f select {
  width: 100%; padding: 9px 10px; font: inherit;
  border: 1px solid #c4cad3; border-radius: 2px; background: #fff; color: var(--ink);
}
.f input:focus, .f select:focus {
  outline: 2px solid var(--navy-soft); outline-offset: -1px; border-color: var(--navy-soft);
}
.f .hint { font-size: 11.5px; color: var(--faint); margin-top: 4px; line-height: 1.4; }
.f.optional label::after {
  content: "optional"; float: right; text-transform: none; letter-spacing: 0;
  font-weight: 400; color: var(--faint); font-size: 10.5px;
}

.actions { margin-top: 20px; display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
button, .btn {
  font: inherit; font-weight: 600; cursor: pointer;
  padding: 10px 20px; border-radius: 2px; border: 1px solid var(--navy);
  background: var(--navy); color: #fff;
}
button.ghost, .btn.ghost { background: #fff; color: var(--navy); }
button:hover { background: var(--navy-soft); border-color: var(--navy-soft); }
button.ghost:hover { background: #eef1f6; }

/* ---------- headline numbers ---------- */
.headline {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 1px; background: var(--rule); border: 1px solid var(--rule);
  margin-bottom: 20px;
}
@media (max-width: 860px) { .headline { grid-template-columns: repeat(2, 1fr); } }
.headline div { background: #fff; padding: 16px 18px; }
.headline .k {
  font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.07em;
  color: var(--muted); font-weight: 700; margin-bottom: 6px;
}
.headline .v { font-size: 24px; font-weight: 600; color: var(--navy); line-height: 1.15; }
.headline .n { font-size: 11.5px; color: var(--faint); margin-top: 4px; }

/* ---------- tables ---------- */
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
caption {
  caption-side: top; text-align: left; font-size: 11.5px; color: var(--muted);
  padding-bottom: 8px;
}
th, td { padding: 7px 10px; text-align: right; border-bottom: 1px solid var(--rule-soft); }
th:first-child, td:first-child { text-align: left; }
thead th {
  font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--muted); border-bottom: 1.5px solid var(--rule); white-space: nowrap;
  vertical-align: bottom; font-weight: 700;
}
tbody tr:hover { background: #fafbfc; }
tfoot td { font-weight: 600; border-top: 1.5px solid var(--rule); border-bottom: none; }
td.num, th.num { font-variant-numeric: tabular-nums; }
tr.bind td { background: #fdf6e6; }
tr.bind td:first-child::after {
  content: " binding"; font-size: 10px; color: var(--warn);
  text-transform: uppercase; letter-spacing: 0.06em; font-weight: 700;
}
.scroll { overflow-x: auto; }

/* ---------- method comparison ---------- */
.methods { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--rule); border: 1px solid var(--rule); }
@media (max-width: 860px) { .methods { grid-template-columns: 1fr; } }
.method { background: #fff; padding: 18px; }
.method h3 { margin: 0 0 3px; font-size: 14.5px; color: var(--navy); }
.method .tag {
  font-size: 10px; text-transform: uppercase; letter-spacing: 0.08em;
  font-weight: 700; color: var(--faint); margin-bottom: 10px;
}
.method .big { font-size: 22px; font-weight: 600; color: var(--ink); }
.method .big-k { font-size: 11px; color: var(--muted); margin-bottom: 12px; }
.method dl { margin: 0; font-size: 12.5px; }
.method dl div { display: flex; justify-content: space-between; gap: 10px; padding: 3px 0; }
.method dt { color: var(--muted); }
.method dd { margin: 0; font-weight: 600; }
.method .rule-note { margin: 12px 0 0; font-size: 11.5px; color: var(--faint); line-height: 1.45; }
.method.recommended { box-shadow: inset 3px 0 0 var(--navy); }

/* ---------- status / notes ---------- */
.status { padding: 11px 14px; border-radius: 2px; font-size: 13.5px; margin-bottom: 16px; }
.status.ok { background: #eef6f1; color: var(--good); border: 1px solid #c6e0d1; }
.status.bad { background: var(--bad-wash); color: var(--bad); border: 1px solid #efcdcd; }

.notes { margin: 0; padding: 0; list-style: none; }
.notes li {
  font-size: 12.5px; color: var(--warn); background: var(--warn-wash);
  border-left: 2px solid #d8b55e; padding: 8px 12px; margin-bottom: 6px; line-height: 1.45;
}

.errors { background: var(--bad-wash); border: 1px solid #efcdcd; padding: 14px 16px; border-radius: 2px; margin-bottom: 20px; }
.errors ul { margin: 0; padding-left: 18px; color: var(--bad); font-size: 13.5px; }

.disclosure {
  font-size: 11.5px; line-height: 1.6; color: var(--muted);
  border-top: 1px solid var(--rule); padding-top: 14px; margin-top: 4px;
}
.provenance {
  font-size: 11px; color: var(--faint); line-height: 1.6; margin-top: 10px;
}
.provenance b { color: var(--muted); font-weight: 600; }

/* ---------- one-pager ---------- */
.sheet {
  background: #fff; max-width: 850px; margin: 24px auto; padding: 46px 52px 38px;
  border: 1px solid var(--rule);
}
.sheet .ph { border-bottom: 2px solid var(--navy); padding-bottom: 12px; margin-bottom: 22px; }
.sheet .ph h1 { margin: 0; font-size: 23px; color: var(--navy); }
.sheet .ph .meta { margin-top: 6px; font-size: 12px; color: var(--muted); display: flex; gap: 18px; flex-wrap: wrap; }
.sheet h2 {
  font-size: 12px; text-transform: uppercase; letter-spacing: 0.09em;
  color: var(--navy); border-bottom: 1px solid var(--rule); padding-bottom: 5px;
  margin: 26px 0 12px;
}
.facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px 22px; font-size: 13px; }
.facts div { display: flex; justify-content: space-between; border-bottom: 1px dotted var(--rule); padding: 3px 0; }
.facts span:first-child { color: var(--muted); }
.facts span:last-child { font-weight: 600; }

@media print {
  body { background: #fff; }
  .noprint { display: none !important; }
  .sheet { border: 0; margin: 0; padding: 0; max-width: none; }
  .card { border: 0; padding: 0; }
  tr.bind td { background: #f3f3f3 !important; -webkit-print-color-adjust: exact; }
  @page { margin: 14mm; }
}