/* Density Altitude Calculator — aviation instrument styling */
:root {
  --bg: #080c16;
  --bg-elev: #0d1320;
  --panel: #121a2c;
  --panel-2: #182236;
  --line: rgba(232, 184, 74, 0.14);
  --line-strong: rgba(231, 238, 248, 0.12);
  --gold: #e8b84a;
  --gold-dim: #b8892a;
  --gold-soft: rgba(232, 184, 74, 0.16);
  --cyan: #6fe3d0;
  --cyan-dim: #3aa896;
  --text: #e7eef8;
  --muted: #8b97ad;
  --faint: #667289;
  --danger: #f07167;
  --ok: #7dcf7d;
  --warn: #f0a35a;
  --shadow: 0 16px 48px rgba(0, 0, 0, 0.35);
  --radius: 16px;
  --font: "IBM Plex Sans", "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --wrap: 44rem;
  --header-h: 4rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.55;
  background:
    radial-gradient(1000px 520px at 50% -8%, rgba(232, 184, 74, 0.09), transparent 55%),
    radial-gradient(700px 380px at 100% 0%, rgba(111, 227, 208, 0.06), transparent 45%),
    var(--bg);
  background-attachment: fixed;
}

body::before {
  content: "";
  pointer-events: none;
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(231, 238, 248, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(231, 238, 248, 0.02) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at 50% 0%, #000 20%, transparent 80%);
  z-index: 0;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  z-index: 20;
  padding: 0.4rem 0.8rem;
  background: var(--gold);
  color: #1a1408;
  font-weight: 600;
  text-decoration: none;
  border-radius: 0 0 8px 8px;
}

.skip-link:focus {
  top: 0;
}

.wrap {
  position: relative;
  z-index: 1;
  width: min(var(--wrap), calc(100% - 2rem));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: rgba(8, 12, 22, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: var(--header-h);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--gold);
  text-decoration: none;
}
a.brand:hover .brand-name {
  color: var(--gold);
}

.brand-mark {
  flex: none;
  display: block;
}

.brand-kicker {
  margin: 0;
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}

.brand-name {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.01em;
}

.header-note {
  margin: 0;
  color: var(--muted);
  font-size: 0.78rem;
  text-align: right;
}

.panel {
  margin: 1.5rem 0;
  padding: 1.35rem 1.25rem 1.5rem;
  background: linear-gradient(180deg, rgba(24, 34, 54, 0.92), rgba(18, 26, 44, 0.96));
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.calc-panel {
  border-top: 2px solid var(--gold);
}

.panel-head h1 {
  margin: 0 0 0.45rem;
  font-size: clamp(1.45rem, 4vw, 1.85rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.lede {
  margin: 0 0 1.35rem;
  color: var(--muted);
  font-size: 0.98rem;
}

.field-block {
  margin: 0 0 1.15rem;
  padding: 0;
  border: 0;
}

.field-block legend,
.field-label-row label {
  display: block;
  font-weight: 600;
  font-size: 0.92rem;
  margin-bottom: 0.45rem;
  padding: 0;
}

.field-label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.45rem;
}

.field-label-row label {
  margin: 0;
}

.sublabel {
  display: block;
  margin: 0 0 0.3rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.optional {
  margin-left: 0.35rem;
  font-weight: 500;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--faint);
}

.mute { color: var(--faint); font-weight: 500; }

.hint {
  margin: 0.4rem 0 0;
  font-size: 0.8rem;
  color: var(--faint);
}

.pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.7rem;
}

.input {
  width: 100%;
  padding: 0.7rem 0.8rem;
  border: 1px solid #2c3a52;
  border-radius: 10px;
  background: #0b101b;
  color: var(--text);
  font-family: var(--mono);
  font-size: 1.05rem; /* >=16px avoids iOS zoom */
  font-weight: 500;
  letter-spacing: 0.01em;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03);
  appearance: textfield;
  -webkit-appearance: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.input::placeholder { color: var(--faint); }
.input:hover { border-color: #3d4d68; }
.input:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 3px var(--gold-soft);
}
.input.is-invalid {
  border-color: var(--danger);
  box-shadow: 0 0 0 3px rgba(240, 113, 103, 0.18);
}

.input::-webkit-outer-spin-button,
.input::-webkit-inner-spin-button {
  appearance: none;
  margin: 0;
}

.seg {
  display: inline-flex;
  padding: 0.15rem;
  background: #0b101b;
  border: 1px solid #2c3a52;
  border-radius: 999px;
}

.seg-btn {
  min-width: 2.5rem;
  padding: 0.28rem 0.7rem;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font-family: inherit;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
}

.seg-btn.is-active {
  background: var(--gold);
  color: #1a1408;
}

.seg-btn:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin: 0.25rem 0 0.5rem;
}

.btn {
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: 999px;
  padding: 0.5rem 0.9rem;
  cursor: pointer;
  min-height: 2.5rem;
}

.btn-ghost {
  background: transparent;
  color: var(--cyan);
  border: 1px solid rgba(111, 227, 208, 0.35);
}

.btn-ghost:hover {
  background: rgba(111, 227, 208, 0.08);
}

.btn:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

.warnings {
  margin: 0.75rem 0 0;
  padding: 0.75rem 0.9rem;
  border-left: 3px solid var(--warn);
  background: rgba(240, 163, 90, 0.1);
  border-radius: 0 10px 10px 0;
  color: #ffd2a3;
  font-size: 0.88rem;
}

.warnings p { margin: 0.2rem 0; }

.results {
  margin-top: 1.5rem;
  padding-top: 1.35rem;
  border-top: 1px solid var(--line-strong);
}

.hero {
  padding: 1rem 1.1rem 1.15rem;
  border-radius: 14px;
  background:
    linear-gradient(180deg, rgba(111, 227, 208, 0.07), transparent 70%),
    #0c121f;
  border: 1px solid rgba(111, 227, 208, 0.2);
}

.hero[data-severity="caution"] {
  border-color: rgba(232, 184, 74, 0.35);
  background:
    linear-gradient(180deg, rgba(232, 184, 74, 0.1), transparent 70%),
    #0c121f;
}

.hero[data-severity="high"] {
  border-color: rgba(240, 163, 90, 0.4);
  background:
    linear-gradient(180deg, rgba(240, 163, 90, 0.12), transparent 70%),
    #0c121f;
}

.hero[data-severity="severe"] {
  border-color: rgba(240, 113, 103, 0.45);
  background:
    linear-gradient(180deg, rgba(240, 113, 103, 0.13), transparent 70%),
    #0c121f;
}

.hero-label,
.stat-label {
  margin: 0;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.hero-tag {
  display: inline-block;
  margin-left: 0.4rem;
  padding: 0.1rem 0.4rem;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  letter-spacing: 0.06em;
  font-size: 0.62rem;
  color: var(--faint);
  vertical-align: middle;
}

.hero-value {
  margin: 0.15rem 0 0;
  font-family: var(--mono);
  font-weight: 700;
  font-size: clamp(2.2rem, 8vw, 3.1rem);
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: var(--cyan);
}

.hero[data-severity="caution"] .hero-value { color: var(--gold); }
.hero[data-severity="high"] .hero-value { color: var(--warn); }
.hero[data-severity="severe"] .hero-value { color: var(--danger); }

.hero-value .unit {
  font-size: 1.05rem;
  font-weight: 500;
  letter-spacing: 0;
  color: var(--muted);
  margin-left: 0.15rem;
}

.hero-value.compact {
  font-size: clamp(1.6rem, 6vw, 2.2rem);
}

.hero-sub {
  margin: 0.25rem 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.humid-card {
  margin-top: 0.7rem;
  padding: 0.9rem 1.1rem 1rem;
  border-radius: 14px;
  background: #0c121f;
  border: 1px solid rgba(232, 184, 74, 0.28);
}

.humid-card .hero-value { color: var(--gold); }

.stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.7rem;
  margin-top: 0.9rem;
}

.stat {
  padding: 0.8rem 0.85rem;
  background: #0c121f;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
}

.stat-value {
  margin: 0.25rem 0 0;
  font-family: var(--mono);
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.stat-sub {
  margin: 0.15rem 0 0;
  font-size: 0.78rem;
  color: var(--muted);
}

.tape-block {
  margin-top: 1.15rem;
}

.tape {
  margin-top: 0.55rem;
}

.tape-track {
  position: relative;
  height: 3.6rem;
  border-radius: 999px;
  background: linear-gradient(90deg, #152033, #24324a 60%, #3a2a22);
  border: 1px solid var(--line-strong);
  overflow: hidden;
}

.tape-marker {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2px;
  margin-left: -1px;
  background: #fff;
}

.tape-marker span {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  top: 0.3rem;
  padding: 0.05rem 0.35rem;
  border-radius: 999px;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
  background: #0c121f;
}

.tape-marker[data-kind="fe"] { background: var(--muted); }
.tape-marker[data-kind="fe"] span { color: var(--muted); top: auto; bottom: 0.3rem; }
.tape-marker[data-kind="pa"] { background: var(--cyan); }
.tape-marker[data-kind="pa"] span { color: var(--cyan); }
.tape-marker[data-kind="da"] { background: var(--gold); }
.tape-marker[data-kind="da"] span { color: var(--gold); top: auto; bottom: 0.3rem; }
.tape-marker[data-kind="daw"] { background: var(--danger); }
.tape-marker[data-kind="daw"] span { color: var(--danger); }

.tape-scale {
  display: flex;
  justify-content: space-between;
  margin-top: 0.3rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--faint);
}

.perf-block {
  margin-top: 1.2rem;
  padding: 1rem 1rem 1.1rem;
  border-radius: 14px;
  background: #0c121f;
  border: 1px solid var(--line-strong);
}

.perf-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.75rem;
}

.perf-head h3 {
  margin: 0;
  font-size: 1rem;
}

.pill {
  display: inline-block;
  padding: 0.18rem 0.55rem;
  border-radius: 999px;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.pill-warn {
  color: #1a1408;
  background: var(--gold);
}

.perf-intro {
  margin: 0.65rem 0 0.9rem;
  font-size: 0.88rem;
  color: var(--muted);
}

.perf-intro strong { color: var(--text); font-weight: 600; }

.meter + .meter { margin-top: 0.75rem; }

.meter-label-row {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  font-size: 0.88rem;
  margin-bottom: 0.3rem;
}

.meter-readout {
  font-family: var(--mono);
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--gold);
}

.meter-bar {
  height: 0.55rem;
  border-radius: 999px;
  background: #1b2436;
  overflow: hidden;
}

.meter-bar i {
  display: block;
  height: 100%;
  width: 0;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--cyan), var(--gold));
  transition: width 0.25s ease;
}

.meter-bar i.is-down {
  background: linear-gradient(90deg, var(--ok), var(--warn), var(--danger));
}

.perf-used {
  margin: 0.7rem 0 0;
  font-size: 0.78rem;
  color: var(--faint);
}

.disclaimer {
  margin-top: 1.25rem;
  padding: 0.95rem 1rem;
  border-radius: 12px;
  border: 1px solid rgba(240, 113, 103, 0.28);
  background: rgba(240, 113, 103, 0.07);
}

.disclaimer h2 {
  margin: 0 0 0.35rem;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--danger);
}

.disclaimer p {
  margin: 0;
  font-size: 0.86rem;
  color: #f3c7c3;
}

.ad-slot {
  margin: 1.5rem 0;
  text-align: center;
}

.ad-label {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--faint);
}

.ad-placeholder {
  min-height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px dashed #3a465c;
  border-radius: 10px;
  background: rgba(18, 26, 44, 0.55);
  color: var(--faint);
  font-size: 0.85rem;
}

.explainer {
  padding: 1.5rem 1.25rem 1.7rem;
}

.explainer h2 {
  margin: 1.4rem 0 0.5rem;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
}

.explainer h2:first-child { margin-top: 0; }

.explainer p,
.explainer li {
  color: #c5cddd;
}

.explainer code {
  display: inline-block;
  margin: 0.15rem 0;
  padding: 0.05rem 0.2rem;
  font-family: var(--mono);
  font-size: 0.84em;
  color: #d7e0f0;
  background: #0b101b;
  border-radius: 4px;
}

.explainer ol,
.explainer ul {
  padding-left: 1.2rem;
}

.explainer li { margin: 0.35rem 0; }

.site-footer {
  margin-top: 1rem;
  padding: 1.5rem 0 2.5rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.85rem;
}

.site-footer p { margin: 0.2rem 0; }
.footer-fine { color: var(--faint); font-size: 0.78rem; }

.noscript {
  position: sticky;
  bottom: 0;
  margin: 0;
  padding: 0.8rem 1rem;
  background: var(--danger);
  color: #1a0a08;
  font-weight: 600;
  text-align: center;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 540px) {
  .header-note { display: none; }
  .wrap { width: min(var(--wrap), calc(100% - 1.25rem)); }
  .panel { padding: 1.15rem 0.95rem 1.3rem; }
  .stat-grid { gap: 0.55rem; }
  .stat-value { font-size: 1.02rem; }
  .form-actions { flex-direction: column; }
  .btn { width: 100%; }
}

@media (min-width: 720px) {
  :root { --wrap: 52rem; }
  .calc-panel {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0 1.6rem;
  }
  .panel-head,
  .disclaimer {
    grid-column: 1 / -1;
  }
  #calc-form,
  .warnings {
    grid-column: 1;
  }
  .results {
    grid-column: 2;
    grid-row: 2 / span 3;
    margin-top: 0;
    padding-top: 0;
    border-top: 0;
    border-left: 1px solid var(--line-strong);
    padding-left: 1.4rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .meter-bar i { transition: none; }
}

@media print {
  .site-header,
  .ad-slot,
  .form-actions { display: none; }
  body { background: #fff; color: #111; }
  .panel { box-shadow: none; border-color: #ccc; }
}

/* ---- Shared site chrome (nav, tables, landing cards, prose pages) ---- */
.site-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 0.35rem 0.85rem;
  font-size: 0.82rem;
}
.site-nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
}
.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--gold);
}
.site-nav a[aria-current="page"] {
  cursor: default;
}
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  margin-top: 0.55rem;
}
.footer-nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.82rem;
}
.footer-nav a:hover { color: var(--gold); }

.card-grid {
  display: grid;
  gap: 0.9rem;
}
@media (min-width: 720px) {
  .card-grid { grid-template-columns: 1fr 1fr; }
  .card-grid .card:first-child,
  .card-grid .tool-card:first-child { grid-column: 1 / -1; }
}
.tool-card {
  display: block;
  padding: 1.15rem 1.2rem 1.25rem;
  text-decoration: none;
  color: inherit;
  background: linear-gradient(180deg, rgba(24, 34, 54, 0.92), rgba(18, 26, 44, 0.96));
  border: 1px solid var(--line-strong);
  border-top: 2px solid var(--gold);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.tool-card:hover { border-color: rgba(232, 184, 74, 0.45); }
.tool-card:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }
.tool-card h2, .tool-card h3 { margin: 0 0 0.35rem; font-size: 1.2rem; }
.tool-card p { margin: 0; color: var(--muted); font-size: 0.95rem; }
.tool-card .go {
  display: inline-block;
  margin-top: 0.85rem;
  color: var(--cyan);
  font-weight: 600;
  font-size: 0.9rem;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}
.data-table th,
.data-table td {
  padding: 0.4rem 0.35rem;
  text-align: left;
  border-bottom: 1px solid var(--line-strong);
  vertical-align: middle;
}
.data-table th {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}
.data-table .input {
  padding: 0.4rem 0.45rem;
  font-size: 0.95rem;
}
.data-table .num-col { width: 5.5rem; }
.data-table .name-col { min-width: 7rem; }
.data-table .narrow { width: 2.6rem; text-align: center; }
.icon-btn {
  background: transparent;
  border: 1px solid #2c3a52;
  color: var(--muted);
  border-radius: 8px;
  min-width: 2.2rem;
  min-height: 2.2rem;
  cursor: pointer;
  font-family: inherit;
  font-weight: 700;
}
.icon-btn:hover { color: var(--danger); border-color: var(--danger); }
.icon-btn:focus-visible { outline: 2px solid var(--gold); }

.status-in { color: var(--ok); font-weight: 700; }
.status-out { color: var(--danger); font-weight: 700; }

.prose-page .panel { max-width: 44rem; }
.prose-page h1 { margin: 0 0 0.6rem; letter-spacing: -0.02em; }
.prose-page h2 { margin: 1.4rem 0 0.45rem; font-size: 1.15rem; }
.prose-page p, .prose-page li { color: #c5cddd; }
.landing-hero { padding: 1.6rem 0 0.4rem; }
.landing-hero h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.8rem, 5vw, 2.4rem);
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.diagram-wrap {
  margin-top: 0.9rem;
  padding: 0.8rem;
  background: #0c121f;
  border: 1px solid var(--line-strong);
  border-radius: 14px;
}
.diagram-wrap svg { display: block; width: 100%; height: auto; }
.legend-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1rem;
  margin-top: 0.5rem;
  font-size: 0.75rem;
  color: var(--muted);
}
.legend-swatch {
  display: inline-block;
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 2px;
  margin-right: 0.3rem;
  vertical-align: -0.05rem;
}

@media (max-width: 720px) {
  .header-inner { align-items: flex-start; flex-wrap: wrap; padding: 0.55rem 0; }
  .site-nav { justify-content: flex-start; width: 100%; }
}

/* ---- Home / landing index ---- */
body.home-page {
  --wrap: 58rem;
}

.home-page .card-grid .tool-card:first-child {
  grid-column: auto;
}

.landing-hero .lede {
  max-width: 42rem;
  margin-bottom: 0;
}

.tool-search {
  margin: 1.25rem 0 0.35rem;
}

.tool-search input[type="search"] {
  width: 100%;
  max-width: 32rem;
  padding: 0.7rem 0.95rem;
  font-family: inherit;
  font-size: 1rem;
  color: var(--text);
  background: var(--panel);
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03);
}

.tool-search input[type="search"]::placeholder {
  color: var(--faint);
}

.tool-search input[type="search"]:focus {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
  border-color: rgba(232, 184, 74, 0.45);
}

.filter-status {
  margin: 0.55rem 0 0;
  font-size: 0.88rem;
  color: var(--muted);
}

.category-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.5rem;
  margin: 1rem 0 0.2rem;
}

.category-nav a {
  display: inline-block;
  padding: 0.28rem 0.7rem;
  color: var(--gold);
  text-decoration: none;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  background: var(--gold-soft);
  border: 1px solid rgba(232, 184, 74, 0.28);
  border-radius: 999px;
}

.category-nav a:hover,
.category-nav a:focus-visible {
  border-color: var(--gold);
}

.category-nav a:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

.tool-group {
  margin: 1.6rem 0 0;
}

.tool-group h2 {
  margin: 0 0 0.7rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
}

.home-page .tool-card {
  padding: 1rem 1.1rem 1.1rem;
}

.home-page .tool-card h3 {
  font-size: 1.08rem;
}

.home-page .tool-card p {
  font-size: 0.9rem;
}

.home-page .tool-card .go {
  margin-top: 0.7rem;
  font-size: 0.84rem;
}

.faq-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.faq-list + .faq-list,
.faq-list li + li {
  margin-top: 1rem;
}

.faq-list h3 {
  margin: 0 0 0.3rem;
  font-size: 1.02rem;
}

.faq-list p {
  margin: 0;
}

@media (min-width: 900px) {
  body.home-page { --wrap: 62rem; }
  .home-page .card-grid { grid-template-columns: 1fr 1fr; }
}