/* One stylesheet. System fonts only, no external origins. Readable at 200% zoom: everything flows, nothing is fixed-height. */
:root {
  --ink: #1b1f23; --muted: #555b63; --line: #d6d9de; --bg: #ffffff; --panel: #f4f6f8;
  --accent: #1f5f8b; --accent-ink: #ffffff; --warn: #8a4b00; --ok: #23663a;
  --l0: #b3261e; --l1: #9c5d00; --l2: #7a6a00; --l3: #2e7d32; --l4: #1b5e20;
}
* { box-sizing: border-box; }
html { font-size: 100%; }
body { margin: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; color: var(--ink); background: var(--bg); line-height: 1.5; }
a { color: var(--accent); }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, summary:focus-visible, [tabindex]:focus-visible { outline: 3px solid var(--ink); outline-offset: 2px; box-shadow: 0 0 0 6px #ffbf47; }
h1:focus, .main:focus { outline: 0; box-shadow: none; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -999px; top: 0; background: #fff; padding: .5rem 1rem; z-index: 10; }
.skip:focus { left: .5rem; top: .5rem; }
.top { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: .5rem 1rem; padding: .75rem 1rem; border-bottom: 1px solid var(--line); background: var(--panel); }
.brand-title { font-weight: 700; font-size: 1.15rem; margin-right: .75rem; }
.brand-sub { color: var(--muted); font-size: .95rem; }
.save-status { margin: 0; color: var(--muted); font-size: .9rem; min-height: 1.2em; }
.layout { display: flex; flex-wrap: wrap; align-items: flex-start; }
.nav { flex: 0 0 16rem; padding: 1rem; border-right: 1px solid var(--line); min-height: 50vh; }
.nav ul { list-style: none; margin: 0; padding: 0; }
.nav li { margin: .15rem 0; }
.nav a { display: flex; justify-content: space-between; gap: .5rem; padding: .35rem .5rem; border-radius: 4px; text-decoration: none; color: var(--ink); }
.nav a:hover { background: var(--panel); }
.nav a.current { background: var(--accent); color: var(--accent-ink); }
.nav .count { color: inherit; opacity: .8; font-size: .85rem; white-space: nowrap; }
.nav h2 { font-size: .85rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); margin: 1rem 0 .25rem; }
.main { flex: 1 1 30rem; min-width: 0; padding: 1rem 1.25rem 3rem; max-width: 60rem; }
.foot { padding: 1rem; border-top: 1px solid var(--line); color: var(--muted); font-size: .9rem; }
h1 { font-size: 1.6rem; margin: .25rem 0 .75rem; }
h2 { font-size: 1.25rem; margin: 1.5rem 0 .5rem; }
h3 { font-size: 1.05rem; margin: 1rem 0 .35rem; }
.lead { color: var(--muted); }
.card { border: 1px solid var(--line); border-radius: 6px; padding: 1rem 1.25rem; margin: 1rem 0; background: #fff; }
.card-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: .5rem 1rem; }
.card-head h2 { margin: 0; }
.badge { display: inline-block; font-size: .8rem; padding: .1rem .5rem; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); background: var(--panel); }
.badge.eq { border-color: var(--warn); color: var(--warn); }
.weight { color: var(--muted); font-size: .9rem; }
.why { font-size: 1.05rem; }
ol.questions li { margin: .5rem 0; }
fieldset { border: 1px solid var(--line); border-radius: 6px; padding: .5rem 1rem 1rem; margin: 1rem 0; }
legend { font-weight: 600; padding: 0 .35rem; }
.level { display: grid; grid-template-columns: auto 1fr; gap: .5rem .75rem; align-items: start; padding: .45rem .25rem; border-top: 1px solid var(--line); }
.level:first-of-type { border-top: 0; }
.level input { margin-top: .35rem; width: 1.15rem; height: 1.15rem; }
.level .lvl { font-weight: 600; }
.l0 .lvl { color: var(--l0); } .l1 .lvl { color: var(--l1); } .l2 .lvl { color: var(--l2); } .l3 .lvl { color: var(--l3); } .l4 .lvl { color: var(--l4); }
label.block { display: block; font-weight: 600; margin: .75rem 0 .25rem; }
input[type=text], input[type=date], select, textarea { font: inherit; padding: .45rem .55rem; border: 1px solid #8a8f96; border-radius: 4px; width: 100%; max-width: 40rem; }
textarea { min-height: 3.2em; }
.note { margin: .75rem 0 1rem; }
.row { display: flex; flex-wrap: wrap; gap: .75rem; align-items: center; margin: .75rem 0; }
button { font: inherit; padding: .5rem .9rem; border-radius: 4px; border: 1px solid var(--accent); background: var(--accent); color: var(--accent-ink); cursor: pointer; }
button.secondary { background: #fff; color: var(--accent); }
button.danger { background: #fff; color: var(--l0); border-color: var(--l0); }
details { margin: .75rem 0; }
summary { cursor: pointer; font-weight: 600; }
.fixes li { margin: .35rem 0; }
.tier { font-size: .8rem; padding: .05rem .4rem; border-radius: 3px; background: var(--panel); border: 1px solid var(--line); margin-left: .35rem; }
.fix-detail { background: var(--panel); border-radius: 4px; padding: .5rem .9rem; margin: .35rem 0 .35rem 1rem; }
.table-wrap { overflow-x: auto; max-width: 100%; margin: .75rem 0; }
.table-wrap > table { margin: 0; }
table { border-collapse: collapse; width: 100%; margin: .75rem 0; }
th, td { text-align: left; padding: .4rem .5rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: var(--panel); }
td.num, th.num { text-align: right; }
.group-summary { padding: .75rem 1rem; border-left: 4px solid var(--accent); background: var(--panel); margin: .75rem 0; }
.notice { padding: .75rem 1rem; border: 1px solid var(--warn); border-radius: 6px; background: #fff8ee; color: var(--ink); margin: 1rem 0; }
.error { padding: .75rem 1rem; border: 1px solid var(--l0); border-radius: 6px; background: #fff3f2; margin: 1rem 0; }
.muted { color: var(--muted); }
code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .95em; background: var(--panel); padding: 0 .25rem; border-radius: 3px; }
.report { max-width: 48rem; }
.report table { font-size: .95rem; }
.diff-up { color: var(--ok); } .diff-down { color: var(--l0); }
@media (max-width: 48rem) { .nav { flex: 1 1 100%; border-right: 0; border-bottom: 1px solid var(--line); min-height: 0; } }
@media print {
  .top, .nav, .foot, .no-print, button { display: none !important; }
  .main { max-width: none; padding: 0; }
  .report { max-width: none; }
  a { color: inherit; text-decoration: none; }
  h1 { page-break-after: avoid; }
  table, .card { page-break-inside: avoid; }
}