:root {
  color-scheme: light;
  --paper: oklch(92% 0.032 82);
  --paper-deep: oklch(84% 0.04 77);
  --paper-soft: oklch(96% 0.02 84);
  --ink: oklch(20% 0.032 68);
  --ink-soft: oklch(37% 0.03 68);
  --iron: oklch(21% 0.018 72);
  --iron-2: oklch(27% 0.02 72);
  --iron-3: oklch(34% 0.022 72);
  --brass: oklch(66% 0.11 79);
  --brass-2: oklch(76% 0.09 82);
  --verdigris: oklch(55% 0.08 173);
  --wax: oklch(54% 0.12 32);
  --blueprint: oklch(48% 0.072 246);
  --line: oklch(54% 0.035 75 / 0.32);
  --line-strong: oklch(33% 0.028 70 / 0.46);
  --shadow: oklch(18% 0.03 70 / 0.18);
  --radius-sm: 6px;
  --radius-md: 8px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-toggle: cubic-bezier(0.65, 0, 0.35, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    linear-gradient(90deg, oklch(38% 0.025 74 / 0.07) 1px, transparent 1px),
    linear-gradient(180deg, oklch(38% 0.025 74 / 0.055) 1px, transparent 1px),
    linear-gradient(180deg, var(--paper-soft), var(--paper) 48%, var(--paper-deep));
  background-size: 42px 42px, 42px 42px, auto;
}

a {
  color: var(--blueprint);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

b {
  color: var(--iron);
}

button,
.button,
input,
select,
textarea,
a {
  transition:
    background-color 180ms var(--ease-out),
    border-color 180ms var(--ease-out),
    color 180ms var(--ease-out),
    box-shadow 180ms var(--ease-out),
    opacity 180ms var(--ease-out),
    transform 180ms var(--ease-out);
}

button:focus,
.button:focus,
input:focus,
select:focus,
textarea:focus,
a:focus {
  outline: none;
}

button:focus-visible,
.button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
a:focus-visible {
  outline: 3px solid oklch(73% 0.12 82 / 0.72);
  outline-offset: 3px;
}

.wrap {
  width: min(1180px, 100%);
  margin: 0 auto;
  padding: clamp(18px, 3vw, 34px) clamp(14px, 3vw, 28px) var(--space-7);
}

.top-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  justify-content: flex-start;
  padding-bottom: var(--space-4);
  margin: 0 0 var(--space-6);
  border-bottom: 1px solid var(--line);
}

.top-nav a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  color: var(--ink-soft);
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-size: 0.88rem;
  font-weight: 720;
}

.top-nav a:hover {
  color: var(--iron);
  border-color: var(--line);
  background: oklch(97% 0.018 84 / 0.72);
}

.top-nav a.active {
  color: var(--paper-soft);
  background: var(--iron);
  border-color: var(--iron);
}

.top-nav a.lang-switch {
  margin-left: auto;
  border-color: var(--line);
  letter-spacing: 0.02em;
}

.top-nav a.lang-switch:hover {
  color: var(--paper-soft);
  background: var(--brass);
  border-color: var(--brass);
}

header {
  max-width: 980px;
  margin: 0 0 var(--space-6);
  padding: 0 0 var(--space-4);
  text-align: left;
}

.eyebrow {
  display: inline-flex;
  color: var(--ink-soft);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}

h1 {
  max-width: 12ch;
  margin: 0;
  color: var(--iron);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2.65rem, 7.5vw, 6.1rem);
  font-weight: 700;
  line-height: 0.9;
  text-wrap: balance;
}

.subtitle {
  max-width: 72ch;
  margin: var(--space-4) 0 0;
  color: var(--ink-soft);
  font-size: clamp(1rem, 1.45vw, 1.14rem);
  line-height: 1.7;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

.secondary-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.secondary-links a {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  color: var(--ink-soft);
  background: oklch(97% 0.018 82 / 0.74);
  text-decoration: none;
  font-size: 0.86rem;
  font-weight: 800;
}

.secondary-links a:hover {
  color: var(--iron);
  border-color: var(--brass);
  background: oklch(98% 0.016 84);
}

.grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-4);
}

@media (min-width: 980px) {
  .grid {
    grid-template-columns: minmax(0, 1fr) minmax(390px, 0.76fr);
    align-items: start;
  }

  .span-2 {
    grid-column: span 2;
  }
}

@media (min-width: 1536px) {
  .wrap {
    width: min(1320px, 100%);
  }
}

.card {
  position: relative;
  padding: clamp(16px, 2.2vw, 24px);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: oklch(96% 0.019 82 / 0.9);
  box-shadow: 0 14px 32px var(--shadow);
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: inherit;
  box-shadow: inset 0 1px 0 oklch(99% 0.01 84 / 0.68);
}

.card h2 {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin: 0 0 var(--space-3);
  color: var(--iron);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.18rem, 2vw, 1.48rem);
  line-height: 1.15;
  text-wrap: balance;
}

.seo-quick-answer p {
  margin: 0;
  max-width: 74ch;
  color: var(--ink-soft);
  font-size: 0.95rem;
  line-height: 1.55;
}

.seo-quick-answer ul {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 6px 18px;
  margin: var(--space-3) 0 0;
  padding-left: 1.15rem;
  color: var(--ink-soft);
  font-size: 0.9rem;
  line-height: 1.42;
}

.seo-quick-answer strong {
  color: var(--iron);
  font-weight: 650;
}

.step-badge {
  width: 30px;
  height: 30px;
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: var(--paper-soft);
  background: var(--iron);
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 0.88rem;
  font-weight: 850;
  font-variant-numeric: tabular-nums;
}

.hint {
  margin: var(--space-2) 0 0;
  color: var(--ink-soft);
  font-size: 0.94rem;
  line-height: 1.62;
}

.note,
.warning {
  margin-top: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border: 1px solid oklch(63% 0.07 173 / 0.38);
  border-left-width: 5px;
  border-radius: var(--radius-sm);
  color: var(--ink);
  background: oklch(91% 0.038 158 / 0.72);
  font-size: 0.94rem;
  line-height: 1.6;
}

.warning {
  border-color: oklch(54% 0.12 32 / 0.48);
  background: oklch(91% 0.038 42 / 0.74);
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--line);
}

.value-card {
  min-height: 124px;
  padding: var(--space-4);
  background: oklch(97% 0.018 82);
}

.value-card::before {
  content: "";
  display: block;
  width: 34px;
  height: 2px;
  margin-bottom: var(--space-3);
  background: var(--brass);
}

.value-card .icon {
  display: none;
}

.value-card h3 {
  margin: 0 0 var(--space-2);
  color: var(--iron);
  font-size: 0.96rem;
  line-height: 1.2;
}

.value-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.9rem;
  line-height: 1.5;
}

.row,
.action-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
}

.action-row {
  margin-top: var(--space-3);
}

.compact-action-row {
  margin-top: var(--space-3);
}

.control-stack {
  display: grid;
  gap: var(--space-3);
}

.advanced-card {
  align-self: start;
  background: oklch(95% 0.018 82 / 0.72);
  box-shadow: none;
}

.advanced-settings summary {
  min-height: 44px;
  display: flex;
  align-items: center;
  color: var(--iron);
  cursor: pointer;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.08rem;
  font-weight: 700;
}

.advanced-settings summary::marker {
  color: var(--brass);
}

.advanced-settings[open] summary {
  margin-bottom: var(--space-3);
}

.primary-path-note {
  padding: var(--space-3);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: oklch(97% 0.018 82 / 0.68);
}

.advanced-mode-tabs {
  margin-top: 0;
}

.control-action {
  display: flex;
  align-items: end;
  gap: var(--space-2);
}

.after-entry,
.result-panel,
.legal-note {
  margin-top: var(--space-3);
}

.fill-button {
  width: 100%;
}

.hidden {
  display: none !important;
}

label {
  display: block;
  margin: 0 0 var(--space-2);
  color: var(--ink-soft);
  font-size: 0.86rem;
  font-weight: 760;
}

input,
select,
button,
textarea {
  font: inherit;
}

input,
select,
textarea {
  width: 100%;
  min-height: 44px;
  color: var(--paper-soft);
  background: var(--iron);
  border: 1px solid var(--iron-3);
  border-radius: var(--radius-sm);
  padding: 11px 12px;
}

input:hover,
select:hover,
textarea:hover {
  border-color: var(--brass);
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  border-color: var(--brass-2);
  box-shadow: 0 0 0 4px oklch(76% 0.09 82 / 0.22);
}

button,
.button {
  min-height: 44px;
  border: 1px solid oklch(47% 0.072 78);
  border-radius: var(--radius-sm);
  color: var(--iron);
  background: var(--brass);
  padding: 10px 14px;
  font-weight: 850;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  box-shadow: inset 0 -2px 0 oklch(42% 0.07 78 / 0.28);
}

button:hover,
.button:hover {
  background: var(--brass-2);
  transform: translateY(-1px);
}

button:active,
.button:active {
  transform: translateY(1px);
  box-shadow: inset 0 2px 0 oklch(35% 0.06 74 / 0.26);
}

button.secondary,
.button.secondary,
button.ghost {
  color: var(--paper-soft);
  background: var(--iron-2);
  border-color: var(--iron-3);
  box-shadow: none;
}

button.secondary:hover,
.button.secondary:hover,
button.ghost:hover {
  background: var(--iron-3);
  border-color: var(--brass);
}

button.ghost {
  color: oklch(88% 0.025 84);
  background: transparent;
  border-style: dashed;
}

button.danger {
  color: var(--paper-soft);
  background: var(--wax);
  border-color: oklch(42% 0.1 32);
  box-shadow: none;
}

button.danger:hover {
  background: oklch(58% 0.13 32);
}

button:disabled {
  opacity: 0.58;
  cursor: not-allowed;
  transform: none;
}

.segmented {
  display: grid;
  grid-template-columns: repeat(5, minmax(44px, 1fr));
  gap: var(--space-2);
}

.segmented button,
.mode-tabs button,
.pos-buttons button,
.rel {
  color: var(--paper-soft);
  background: var(--iron);
  border-color: var(--iron-3);
  box-shadow: none;
  font-variant-numeric: tabular-nums;
}

.segmented button.active,
.mode-tabs button.active,
.pos-buttons button.active {
  color: var(--iron);
  background: var(--brass);
  border-color: oklch(47% 0.072 78);
  box-shadow: inset 0 -2px 0 oklch(42% 0.07 78 / 0.28);
}

.mode-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.orientation {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-4);
  align-items: start;
}

@media (min-width: 760px) {
  .orientation {
    grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
  }
}

.numbering-reference-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-3);
}

.reference-panel {
  display: grid;
  gap: var(--space-2);
  margin: 0;
}

.reference-img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: var(--iron);
  box-shadow: 0 12px 24px var(--shadow);
}

.reference-caption {
  display: grid;
  gap: 2px;
  font-size: 0.85rem;
  line-height: 1.35;
  color: var(--ink-soft);
}

.reference-caption b {
  color: var(--iron);
}

.plates {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-3);
}

.plate-row {
  display: grid;
  grid-template-columns: 104px minmax(0, 1fr);
  gap: var(--space-3);
  align-items: center;
  padding: var(--space-3);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: oklch(97% 0.016 82 / 0.72);
}

.plate-name {
  color: var(--iron);
  font-weight: 900;
  line-height: 1.12;
}

.plate-name[data-plate-label]::before {
  content: attr(data-plate-label) " ";
}

.plate-sub {
  display: block;
  margin-top: var(--space-1);
  color: var(--ink-soft);
  font-size: 0.72rem;
  font-weight: 760;
}

.pos-buttons {
  display: grid;
  grid-template-columns: repeat(7, minmax(44px, 1fr));
  gap: var(--space-2);
}

.pos-buttons button {
  min-width: 0;
  padding: 9px 0;
  font-weight: 900;
}

.pos-buttons button.center {
  border-color: oklch(55% 0.08 173 / 0.72);
  color: oklch(85% 0.045 173);
}

.matrix-wrap {
  overflow-x: auto;
  margin-top: var(--space-3);
  padding-bottom: var(--space-1);
}

table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 6px;
}

th,
td {
  padding: 0;
  text-align: center;
  vertical-align: middle;
}

th {
  color: var(--ink-soft);
  font-size: 0.78rem;
  font-weight: 780;
  white-space: nowrap;
}

th:first-child {
  width: 66px;
  color: var(--iron);
}

.matrix-plate-label[data-prefix]::before {
  content: attr(data-prefix) " ";
}

.rel {
  min-width: 58px;
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 7px 8px;
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  font-weight: 850;
}

.rel.same {
  color: oklch(87% 0.048 173);
  background: oklch(35% 0.045 173);
  border-color: oklch(55% 0.08 173 / 0.62);
}

.rel.opp {
  color: oklch(92% 0.038 42);
  background: oklch(37% 0.08 32);
  border-color: oklch(54% 0.12 32 / 0.62);
}

.rel.gone {
  color: oklch(89% 0.04 246);
  background: oklch(34% 0.054 246);
  border-color: oklch(48% 0.072 246 / 0.62);
}

.rel.self {
  opacity: 0.44;
  cursor: not-allowed;
}

.mapping-box {
  margin-top: var(--space-3);
  padding: var(--space-4);
  border: 1px solid oklch(55% 0.08 173 / 0.38);
  border-radius: var(--radius-md);
  background: oklch(92% 0.035 156 / 0.58);
}

.mapping-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.78fr) minmax(280px, 1.22fr);
  gap: var(--space-4);
  align-items: start;
  padding-bottom: var(--space-4);
  border-bottom: 1px solid oklch(55% 0.08 173 / 0.22);
}

.mapping-status {
  color: var(--ink-soft);
  font-size: 0.82rem;
  font-weight: 900;
  text-transform: uppercase;
}

.mapping-current {
  margin-top: var(--space-2);
  color: var(--iron);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.42rem, 3vw, 2.25rem);
  font-weight: 700;
  line-height: 1.05;
  text-wrap: balance;
}

.mapping-guide-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-4);
}

@media (min-width: 900px) {
  .mapping-guide-grid {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  }
}

.mapping-phase {
  padding: var(--space-4);
  border: 1px solid oklch(55% 0.08 173 / 0.28);
  border-radius: var(--radius-sm);
  background: oklch(97% 0.018 82 / 0.68);
}

.mapping-phase h3 {
  margin: 0 0 var(--space-3);
  color: var(--iron);
  font-size: 1rem;
  line-height: 1.2;
}

.mapping-controls {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-3);
  margin-top: var(--space-3);
}

@media (min-width: 760px) {
  .mapping-controls {
    grid-template-columns: 1fr 1fr 1fr;
  }
}

.mapping-phase .mapping-controls {
  margin-top: 0;
}

@media (min-width: 760px) {
  .mapping-phase .mapping-controls {
    grid-template-columns: 1fr 1fr;
  }
}

.mapping-checklist {
  display: grid;
  gap: var(--space-2);
  margin: var(--space-3) 0 0;
  padding: 0;
  list-style: none;
}

.mapping-checklist li {
  position: relative;
  padding-left: 30px;
  color: var(--ink-soft);
  font-size: 0.93rem;
  line-height: 1.45;
}

.mapping-checklist li::before {
  content: counter(list-item);
  position: absolute;
  left: 0;
  top: 0.08rem;
  width: 20px;
  height: 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: var(--paper-soft);
  background: var(--iron);
  font-size: 0.72rem;
  font-weight: 900;
}

.progress-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(126px, 1fr));
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.mapping-rail {
  margin-top: 0;
}

.progress-pill {
  display: grid;
  grid-template-columns: auto auto minmax(0, 1fr);
  align-items: center;
  column-gap: 6px;
  min-height: 44px;
  width: 100%;
  justify-content: flex-start;
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--ink-soft);
  background: oklch(97% 0.018 82 / 0.74);
  font-size: 0.84rem;
  font-weight: 800;
  box-shadow: none;
  text-align: left;
  transform: none;
}

.progress-plate-label {
  display: inline-flex;
  align-items: baseline;
  gap: 0.45ch;
  white-space: nowrap;
}

.progress-pill-separator {
  line-height: 1;
  opacity: 0.78;
}

.progress-pill-status {
  min-width: 0;
  line-height: 1.15;
  overflow-wrap: anywhere;
}

.progress-pill.done {
  color: oklch(29% 0.055 173);
  border-color: oklch(55% 0.08 173 / 0.5);
  background: oklch(91% 0.042 158);
}

.progress-pill.current {
  color: var(--paper-soft);
  border-color: var(--iron);
  background: var(--iron);
}

.progress-pill:hover {
  border-color: var(--brass);
  transform: none;
}

.result {
  min-height: 160px;
  overflow-x: auto;
  white-space: pre-wrap;
  padding: var(--space-4);
  border: 1px solid var(--iron-3);
  border-radius: var(--radius-sm);
  color: var(--paper-soft);
  background: var(--iron);
  line-height: 1.58;
}

.solution-summary,
.solution-steps,
.solution-note {
  white-space: normal;
}

.solution-summary {
  margin-bottom: var(--space-3);
}

.solution-steps {
  display: grid;
  gap: var(--space-2);
  margin: 0 0 var(--space-4);
}

.solution-step {
  display: grid;
  grid-template-columns: 3ch minmax(145px, 1fr) minmax(105px, auto) minmax(44px, auto);
  align-items: center;
  gap: var(--space-2);
  padding: 9px 10px;
  border: 1px solid oklch(54% 0.044 82 / 0.38);
  border-radius: var(--radius-sm);
  background: oklch(18% 0.016 74);
}

.solution-step-index {
  color: oklch(75% 0.038 82);
  font-weight: 900;
  font-variant-numeric: tabular-nums;
}

.solution-step-plate {
  color: var(--paper-soft);
  font-weight: 840;
}

.solution-step-key {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: oklch(88% 0.036 82);
  font-weight: 800;
}

.solution-step-key b {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  min-height: 34px;
  padding: 3px 10px;
  border: 1px solid oklch(74% 0.11 74);
  border-radius: 4px;
  color: var(--iron);
  background: var(--brass);
  font-weight: 950;
}

.solution-step-count {
  justify-self: end;
  min-width: 42px;
  color: oklch(86% 0.045 246);
  font-weight: 950;
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.solution-note {
  margin-top: var(--space-3);
}

.success {
  color: oklch(83% 0.058 173);
  font-weight: 900;
}

.error {
  color: oklch(82% 0.078 42);
  font-weight: 900;
}

.info {
  color: oklch(84% 0.045 246);
  font-weight: 840;
}

.state-details {
  margin-top: var(--space-3);
  display: none;
}

.state-details.show {
  display: block;
}

.content-sections {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-4);
}

@media (min-width: 760px) {
  .content-sections {
    grid-template-columns: 1fr 1fr;
  }
}

.copy h3,
.faq h3 {
  margin: 0 0 var(--space-2);
  color: var(--iron);
  font-size: 1rem;
  line-height: 1.25;
}

.copy p,
.copy li,
.faq p {
  max-width: 68ch;
  color: var(--ink-soft);
  font-size: 0.95rem;
  line-height: 1.62;
}

.copy p,
.faq p {
  margin: 0;
}

.copy ul {
  margin: var(--space-2) 0 0;
  padding-left: 1.2rem;
}

.faq {
  display: grid;
  gap: var(--space-4);
}

.tiny {
  color: var(--ink-soft);
  font-size: 0.8rem;
  line-height: 1.5;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: max(22px, env(safe-area-inset-bottom));
  z-index: 100;
  display: none;
  max-width: calc(100vw - 24px);
  transform: translateX(-50%);
  padding: 11px 14px;
  border: 1px solid var(--brass);
  border-radius: var(--radius-sm);
  color: var(--paper-soft);
  background: var(--iron);
  box-shadow: 0 14px 28px var(--shadow);
  text-align: center;
}

.toast.show {
  display: block;
}

@media (max-width: 720px) {
  .wrap {
    padding: 16px 10px 40px;
  }

  .top-nav {
    margin-bottom: var(--space-5);
  }

  .top-nav a {
    flex: 1 1 auto;
    justify-content: center;
  }

  h1 {
    max-width: 100%;
  }

  .hero-cta .button,
  .hero-cta button {
    width: 100%;
  }

  .card {
    padding: var(--space-4);
  }

  .card h2 {
    align-items: flex-start;
  }

  .plate-row {
    grid-template-columns: minmax(0, 1fr);
  }

  .pos-buttons {
    grid-template-columns: repeat(7, minmax(0, 1fr));
    gap: var(--space-1);
  }

  .pos-buttons button {
    min-height: 44px;
    padding: 9px 2px;
  }

  .mapping-box {
    padding: var(--space-3);
  }

  .mapping-hero,
  .mapping-guide-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .mapping-phase {
    padding: var(--space-3);
  }

  .compact-action-row button {
    width: 100%;
  }

  .segmented {
    gap: var(--space-1);
  }

  .rel {
    min-width: 46px;
    font-size: 0.72rem;
  }

  .solution-step {
    grid-template-columns: 2.25rem minmax(0, 1fr) auto;
    gap: 7px 9px;
    padding: 10px;
  }

  .solution-step-index {
    grid-row: 1 / span 2;
  }

  .solution-step-plate {
    grid-column: 2 / -1;
  }

  .solution-step-key {
    grid-column: 2;
  }

  .solution-step-count {
    grid-column: 3;
  }

  }

@media (hover: hover) {
  .card:hover {
    border-color: var(--line-strong);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

.start-here {
  border-left: 5px solid var(--brass);
}

.start-here-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-4);
  margin-top: var(--space-3);
}

.start-here-steps {
  margin: 0 0 var(--space-3);
  padding-left: 1.3em;
  line-height: 1.62;
}

.start-here-steps li {
  margin-bottom: var(--space-2);
}

.start-here-controls h3 {
  margin: 0 0 var(--space-2);
}

.start-here-controls ul {
  margin: 0;
  padding-left: 1.2em;
  line-height: 1.6;
}

.start-here-controls li {
  margin-bottom: 4px;
  font-variant-numeric: tabular-nums;
}