:root {
  --paper: #f3efe6;
  --card: #fffdf8;
  --ink: #1a2332;
  --muted: #5c6570;
  --line: #e4dacb;
  --teal: #0c5c56;
  --teal-deep: #084540;
  --teal-soft: #e6f3f1;
  --red: #8f2d2d;
  --red-soft: #f8ecec;
  --amber: #8a5a12;
  --amber-soft: #f8f1e3;
  --shadow: 0 10px 30px rgba(26, 35, 50, 0.06);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Segoe UI", "Helvetica Neue", sans-serif;
  line-height: 1.45;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.site-header {
  padding: 1.1rem 1.25rem 0.4rem;
}

.brand {
  display: flex;
  gap: 0.85rem;
  align-items: center;
  max-width: 1100px;
  margin: 0 auto;
}

.mark {
  display: grid;
  place-items: center;
  min-width: 2.6rem;
  height: 2.6rem;
  padding: 0 0.45rem;
  border-radius: 0.55rem;
  background: var(--teal);
  color: #fff;
  font-weight: 700;
  letter-spacing: 0.04em;
  font-size: 0.85rem;
}

.brand h1 {
  margin: 0;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
}

.brand p {
  margin: 0.1rem 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.toolbar {
  position: sticky;
  top: 0;
  z-index: 2;
  padding: 0.75rem 1.25rem 0.85rem;
  background: rgba(243, 239, 230, 0.94);
  backdrop-filter: blur(8px);
}

.search input {
  width: 100%;
  max-width: 1100px;
  display: block;
  margin: 0 auto;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink);
  border-radius: 0.7rem;
  padding: 0.75rem 0.9rem;
  font: inherit;
  font-size: 1rem;
}

.search input:focus {
  outline: 2px solid var(--teal);
  border-color: var(--teal);
}

.chips {
  display: flex;
  gap: 0.45rem;
  flex-wrap: wrap;
  max-width: 1100px;
  margin: 0.7rem auto 0;
}

.chip {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  border-radius: 999px;
  padding: 0.35rem 0.75rem;
  font: inherit;
  font-size: 0.88rem;
  cursor: pointer;
}

.chip[aria-selected="true"] {
  background: var(--teal);
  border-color: var(--teal);
  color: #fff;
}

.layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 1rem;
  max-width: 1100px;
  margin: 0 auto;
  padding: 1rem 1.25rem 2.5rem;
  align-items: start;
}

.list-panel {
  position: sticky;
  top: 7.4rem;
}

.result-count {
  margin: 0 0 0.4rem;
  color: var(--muted);
  font-size: 0.8rem;
}

.diag-list {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  max-height: calc(100vh - 10rem);
  overflow: auto;
}

.diag-btn {
  text-align: left;
  border: 1px solid transparent;
  background: transparent;
  color: var(--ink);
  border-radius: 0.65rem;
  padding: 0.55rem 0.65rem;
  font: inherit;
  cursor: pointer;
}

.diag-btn small {
  display: block;
  color: var(--muted);
  font-size: 0.75rem;
}

.diag-btn[aria-current="true"] {
  background: var(--card);
  border-color: var(--line);
  box-shadow: var(--shadow);
}

.diag-btn:focus-visible,
.chip:focus-visible,
.print-btn:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 1rem;
  padding: 1.15rem 1.2rem 1.3rem;
  box-shadow: var(--shadow);
  min-height: 24rem;
}

.card-top {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  align-items: flex-start;
}

.kicker {
  display: inline-block;
  background: var(--teal-soft);
  color: var(--teal-deep);
  border-radius: 999px;
  padding: 0.15rem 0.55rem;
  font-size: 0.75rem;
  font-weight: 650;
  letter-spacing: 0.02em;
}

.card h2 {
  margin: 0.35rem 0 0.25rem;
  font-size: 1.55rem;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.aliases {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.snapshot {
  margin: 0.8rem 0 0;
  font-size: 1.02rem;
}

.print-btn {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--teal-deep);
  border-radius: 0.6rem;
  padding: 0.45rem 0.7rem;
  font: inherit;
  font-size: 0.88rem;
  cursor: pointer;
  white-space: nowrap;
}

.callout {
  margin-top: 0.85rem;
  border-radius: 0.7rem;
  padding: 0.65rem 0.8rem;
}

.callout h3,
.section h3 {
  margin: 0 0 0.3rem;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.callout ul,
.section ul {
  margin: 0;
  padding-left: 1.1rem;
}

.callout li,
.section li {
  margin: 0.18rem 0;
}

.callout.danger {
  background: var(--red-soft);
  color: #5e1d1d;
}

.callout.danger h3 { color: var(--red); }

.callout.warn {
  background: var(--amber-soft);
  color: #5c3d0c;
}

.callout.warn h3 { color: var(--amber); }

.options {
  margin-top: 0.95rem;
  border: 1px solid #c9e3df;
  border-radius: 0.7rem;
  padding: 0.7rem 0.9rem 0.85rem;
  background: #f4faf9;
}

.options h3 { color: var(--teal-deep); }

.options ol {
  margin: 0;
  padding-left: 1.25rem;
}

.options li { margin: 0.4rem 0; }

.options strong { font-weight: 650; }

.sections {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem 1.2rem;
  margin-top: 0.95rem;
}

.section h3 { color: var(--teal-deep); }

.fine-print {
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 0.8rem;
}

.empty {
  color: var(--muted);
  padding: 0.4rem;
}

@media (max-width: 800px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .list-panel { position: static; }

  .diag-list {
    max-height: none;
    flex-direction: row;
    overflow-x: auto;
    padding-bottom: 0.3rem;
  }

  .diag-btn {
    min-width: 11rem;
    background: var(--card);
    border-color: var(--line);
  }

  .sections { grid-template-columns: 1fr; }

  .card h2 { font-size: 1.35rem; }
}

@media print {
  @page { size: letter; margin: 0.4in; }

  body { background: #fff; }

  .site-header,
  .toolbar,
  .list-panel,
  .print-btn { display: none !important; }

  .layout {
    display: block;
    max-width: none;
    padding: 0;
    margin: 0;
  }

  .card {
    border: 0;
    box-shadow: none;
    border-radius: 0;
    padding: 0;
    min-height: 0;
  }

  .card h2 { font-size: 15pt; margin-top: 2pt; }

  .snapshot { font-size: 10pt; margin-top: 4pt; }

  .aliases { font-size: 9pt; }

  .callout,
  .section,
  .options li { break-inside: avoid; }

  .options { margin-top: 6pt; padding: 4pt 8pt; }

  .callout { margin-top: 6pt; padding: 5pt 7pt; }

  .sections {
    grid-template-columns: 1fr 1fr;
    gap: 6pt 12pt;
    margin-top: 6pt;
  }

  .callout li,
  .section li,
  .options li,
  .fine-print,
  .snapshot { font-size: 8.5pt; line-height: 1.25; }

  .callout h3,
  .section h3,
  .options h3 { font-size: 7.5pt; margin-bottom: 1pt; }

  .fine-print { margin-top: 6pt; }
}