:root {
  --ink: #000;
  --paper: #fff;
  --muted: #555;
  --line: #000;
  --soft: #f2f2f2;
  --font: "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: "SF Mono", Consolas, "Liberation Mono", monospace;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font); font-size: 15px; line-height: 1.45;
  color: var(--ink); background: var(--paper);
  display: flex; flex-direction: column; min-height: 100vh;
}
a { color: var(--ink); }
main#app { flex: 1; width: 100%; max-width: 1280px; margin: 0 auto; padding: 24px 20px 48px; }

.top {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 20px; border-bottom: 2px solid var(--line);
}
.brand { font-weight: 700; letter-spacing: .12em; text-decoration: none; font-size: 15px; }
#nav a { margin-left: 22px; text-decoration: none; padding-bottom: 3px; border-bottom: 2px solid transparent; }
#nav a.active { border-bottom-color: var(--ink); }
.foot { border-top: 1px solid var(--line); padding: 12px 20px; font-size: 12px; color: var(--muted); }

h1 { font-size: 26px; margin: 0 0 6px; font-weight: 700; }
h2 { font-size: 18px; margin: 28px 0 10px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; border-bottom: 1px solid var(--line); padding-bottom: 6px; }
h3 { font-size: 15px; margin: 18px 0 6px; font-weight: 700; }
p { margin: 8px 0; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.mono { font-family: var(--mono); font-size: 13px; }
.center { text-align: center; }

label { display: block; font-weight: 700; margin: 14px 0 4px; font-size: 13px; text-transform: uppercase; letter-spacing: .05em; }
label.inline { display: inline-flex; align-items: center; gap: 8px; text-transform: none; letter-spacing: 0; font-weight: 400; font-size: 15px; margin: 8px 16px 0 0; }
input[type=text], input[type=password], input[type=number], textarea, select {
  width: 100%; padding: 9px 10px; border: 1px solid var(--line); border-radius: 0;
  font: inherit; color: var(--ink); background: var(--paper);
}
input[type=number] { width: 90px; }
textarea { min-height: 120px; resize: vertical; }
textarea.short { min-height: 64px; }
input:focus, textarea:focus, select:focus { outline: 2px solid var(--ink); outline-offset: -1px; }
input[type=file] { font: inherit; }
.hint { font-size: 13px; color: var(--muted); margin-top: 4px; }

button, .btn {
  display: inline-block; padding: 9px 16px; border: 1px solid var(--ink); background: var(--ink); color: var(--paper);
  font: inherit; font-weight: 700; cursor: pointer; text-decoration: none; border-radius: 0; letter-spacing: .02em;
}
button:hover, .btn:hover { background: var(--paper); color: var(--ink); }
button.ghost, .btn.ghost { background: var(--paper); color: var(--ink); }
button.ghost:hover, .btn.ghost:hover { background: var(--ink); color: var(--paper); }
button.small, .btn.small { padding: 5px 10px; font-size: 13px; }
button[disabled] { opacity: .45; cursor: default; }
.actions { margin-top: 18px; display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }

.card { border: 1px solid var(--line); padding: 18px 20px; margin: 14px 0; background: var(--paper); }
.card.soft { background: var(--soft); border-color: var(--soft); }
.warn { border: 2px solid var(--ink); padding: 10px 14px; font-weight: 700; margin: 12px 0; }
.error { border: 2px dashed var(--ink); padding: 10px 14px; margin: 12px 0; }
.badge { display: inline-block; border: 1px solid var(--ink); padding: 1px 8px; font-size: 12px; text-transform: uppercase; letter-spacing: .05em; }
.badge.fill { background: var(--ink); color: var(--paper); }

table { width: 100%; border-collapse: collapse; margin: 10px 0; }
th, td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; }
th { background: var(--ink); color: var(--paper); font-size: 12px; text-transform: uppercase; letter-spacing: .05em; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
tr.sub td { color: var(--muted); }
.tablewrap { overflow-x: auto; }

.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: start; }
.split { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 24px; align-items: start; }
@media (max-width: 900px) { .grid2, .split { grid-template-columns: 1fr; } }

.pdf { border: 1px solid var(--line); background: var(--soft); padding: 10px; max-height: 85vh; overflow: auto; position: sticky; top: 12px; }
.pdf canvas { display: block; width: 100%; height: auto; background: #fff; margin: 0 auto 10px; border: 1px solid #ccc; }
.pdf .pagenum { font-size: 11px; color: var(--muted); text-align: right; margin: -6px 0 10px; }

.q { border: 1px solid var(--line); padding: 14px 16px; margin: 12px 0; }
.q .head { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; }
.q .head strong { font-size: 16px; }
.q .question { font-size: 13px; color: var(--muted); margin: 4px 0 8px; }
.q .reason { margin: 8px 0; }
.q blockquote { margin: 6px 0 6px 14px; padding-left: 10px; border-left: 3px solid var(--ink); font-style: italic; }
.q .final { display: flex; align-items: center; gap: 10px; margin-top: 10px; padding-top: 10px; border-top: 1px dashed var(--ink); }
.q .final input { width: 80px; }

.keyq { border: 1px solid var(--line); padding: 10px 12px; margin: 8px 0; }
.keyq .row { display: flex; gap: 10px; align-items: center; margin-bottom: 6px; }
.keyq .row input[type=number] { width: 70px; }
.keyq label { margin: 6px 0 2px; }

.kv { display: grid; grid-template-columns: max-content 1fr; gap: 4px 16px; font-size: 14px; }
.kv dt { font-weight: 700; }
.kv dd { margin: 0; }
.login { max-width: 380px; margin: 80px auto; }
.progress { font-family: var(--mono); font-size: 13px; white-space: pre-wrap; }
.totals { font-size: 22px; font-weight: 700; margin: 6px 0 14px; }
.totals span { font-weight: 400; color: var(--muted); font-size: 15px; }
.dropzone { border: 2px dashed var(--ink); padding: 26px; text-align: center; margin: 12px 0; }
.dropzone.over { background: var(--soft); }
.radio { margin: 6px 0; }
.radio input { margin-right: 8px; }