:root {
  color-scheme: light;
  --paper: rgba(255, 255, 255, 0.82);
  --ink: #2b2a28;
  --muted: #605c56;
  --accent: #2f6f62;
  --accent-soft: rgba(47, 111, 98, 0.18);
  --accent-berry: #7a4b6b;
  --accent-berry-soft: rgba(122, 75, 107, 0.18);
  --stroke: rgba(43, 42, 40, 0.12);
  --divider: rgba(43, 42, 40, 0.08);
  --shadow: 0 20px 60px rgba(28, 24, 20, 0.12);
  --radius: 28px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Georgia", "Times New Roman", serif;
  color: var(--ink);
  background: linear-gradient(120deg, #f4f2ee, #e7edea 40%, #eff1f1 80%);
  min-height: 100vh;
  position: relative;
}

.ambient {
  position: fixed;
  inset: 0;
  background:
    radial-gradient(600px 400px at 15% 18%, rgba(47, 111, 98, 0.09), transparent 60%),
    radial-gradient(520px 360px at 85% 22%, rgba(122, 75, 107, 0.08), transparent 65%),
    radial-gradient(520px 420px at 30% 85%, rgba(47, 111, 98, 0.07), transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.page {
  position: relative;
  z-index: 1;
  padding: 48px 20px 80px;
  display: flex;
  justify-content: center;
}

.card {
  width: min(900px, 100%);
  background: var(--paper);
  border-radius: var(--radius);
  padding: 40px 44px 46px;
  box-shadow: var(--shadow);
  border: 1px solid rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(6px);
}

.header {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 20px;
}

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(47, 111, 98, 0.9), rgba(122, 75, 107, 0.75));
  box-shadow: 0 8px 18px rgba(47, 111, 98, 0.25);
}

.title-block {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.eyebrow {
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--muted);
  margin: 0;
}

h1 {
  font-size: 28px;
  margin: 0;
  font-weight: 500;
}

.narrative {
  font-size: 22px;
  line-height: 1.6;
  font-style: italic;
  color: var(--ink);
}

.narrative p {
  margin: 12px 0;
}

.sentence {
  margin: 12px 0;
}

.wrap-group {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  white-space: nowrap;
}

.control-inline,
.control-block {
  display: inline-flex;
  align-items: center;
  padding: 2px 2px;
  border-radius: 12px;
  transition: background 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
  border: 1px solid transparent;
}

.control-inline select,
.control-inline input,
.control-block select,
.control-block input {
  font-family: "Georgia", "Times New Roman", serif;
  font-size: 1em;
  font-style: normal;
  color: var(--ink);
  border: 1px solid var(--stroke);
  background: rgba(255, 255, 255, 0.7);
  padding: 6px 12px;
  border-radius: 12px;
  min-width: 140px;
  max-width: 240px;
  outline: none;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.6);
  transition: border-color 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.control-inline select,
.control-block select {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  padding-right: 30px;
  background-image:
    linear-gradient(45deg, transparent 50%, rgba(43, 42, 40, 0.45) 50%),
    linear-gradient(135deg, rgba(43, 42, 40, 0.45) 50%, transparent 50%),
    linear-gradient(to right, rgba(43, 42, 40, 0.08), rgba(43, 42, 40, 0.08));
  background-position:
    calc(100% - 20px) 55%,
    calc(100% - 14px) 55%,
    calc(100% - 32px) 50%;
  background-size:
    6px 6px,
    6px 6px,
    1px 58%;
  background-repeat: no-repeat;
}

.control-inline select {
  width: max-content;
  min-width: 160px;
}

.control-block input {
  width: 100%;
}

.control-inline.is-complete,
.control-block.is-complete {
  background: rgba(47, 111, 98, 0.08);
  border-color: rgba(47, 111, 98, 0.32);
  box-shadow: inset 0 -1px 0 rgba(47, 111, 98, 0.2);
}

.control-inline.is-complete select,
.control-inline.is-complete input,
.control-block.is-complete select,
.control-block.is-complete input {
  border-color: rgba(47, 111, 98, 0.45);
  background: rgba(255, 255, 255, 0.9);
}

.control-inline select:focus,
.control-inline input:focus,
.control-block select:focus,
.control-block input:focus {
  border-color: rgba(47, 111, 98, 0.6);
  box-shadow: 0 0 0 6px rgba(47, 111, 98, 0.12);
}

.control-inline input.is-invalid,
.control-block input.is-invalid {
  border-color: rgba(122, 75, 107, 0.65);
  background: rgba(122, 75, 107, 0.08);
  box-shadow: 0 0 0 5px rgba(122, 75, 107, 0.12);
}

.conditional {
  margin-top: 20px;
}

.divider {
  height: 1px;
  background: var(--divider);
  margin: 16px 0 22px;
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 20px;
  margin-bottom: 16px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 17px;
  color: var(--muted);
}

.is-hidden {
  display: none !important;
}

.field.is-hidden {
  display: none;
}

.section-header {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 12px;
}

.section-header h2 {
  margin: 0;
  font-size: 20px;
  font-style: italic;
}

.section-hint {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
  font-style: italic;
}

.identifiers {
  margin-top: 10px;
}

.identifiers-grid.secondary {
  margin-top: 10px;
  transition: opacity 180ms ease;
}

.identifiers-grid.secondary.is-deemphasized {
  opacity: 0.55;
}

.cross {
  opacity: 0;
  transform: translateY(10px);
  max-height: 0;
  overflow: hidden;
  transition: opacity 200ms ease, transform 200ms ease, max-height 200ms ease;
}

.cross.is-visible {
  opacity: 1;
  transform: translateY(0);
  max-height: 200px;
}

.guidance {
  margin-top: 26px;
  padding: 22px 24px 28px;
  background: rgba(47, 111, 98, 0.06);
  border-radius: 20px;
  border: 1px solid rgba(43, 42, 40, 0.06);
}

.guidance-header {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}

.guidance-header h2 {
  margin: 0;
  font-size: 20px;
  font-style: italic;
}

.suggested {
  margin: 0;
  font-size: 18px;
}

.summary-line {
  margin: 0;
  font-size: 15px;
  color: var(--muted);
  line-height: 1.5;
}

.summary-note {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
}

.guidance-hint {
  margin: 0;
  font-size: 13px;
  color: var(--muted);
  font-style: italic;
}

.suggested-hint {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
}

.guidance-body {
  font-size: 17px;
  line-height: 1.6;
  transition: opacity 180ms ease;
}

.guidance-body.is-refreshing {
  opacity: 0.6;
}

.guidance-body p {
  margin: 12px 0;
}

.guidance-body .recap {
  margin-bottom: 16px;
}

.guidance-body .scope-note {
  margin-bottom: 18px;
}

.step-list {
  margin: 14px 0 18px;
  padding-left: 0;
  list-style: none;
}

.step-list li {
  margin-bottom: 8px;
}

.callouts {
  margin-top: 18px;
  display: grid;
  gap: 10px;
}

.callout {
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid rgba(43, 42, 40, 0.12);
  border-left: 4px solid rgba(47, 111, 98, 0.35);
  background: rgba(255, 255, 255, 0.75);
  font-size: 16px;
  line-height: 1.55;
  color: var(--muted);
  display: flex;
  gap: 10px;
}

.callout.rule {
  border-left-color: rgba(47, 111, 98, 0.55);
  background: rgba(47, 111, 98, 0.06);
}

.callout.reminder {
  border-left-color: rgba(43, 42, 40, 0.25);
  background: rgba(255, 255, 255, 0.65);
}

.callout.trouble {
  border-left-color: rgba(122, 75, 107, 0.45);
  background: rgba(122, 75, 107, 0.06);
}

.callout.warning {
  border-color: rgba(122, 75, 107, 0.4);
  border-left-color: rgba(122, 75, 107, 0.6);
  background: rgba(122, 75, 107, 0.08);
}

.callout strong {
  color: var(--ink);
  font-weight: 500;
}

.glyph {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.92em;
  opacity: 0.8;
  background: rgba(255, 255, 255, 0.5);
  border-radius: 999px;
  padding: 2px 6px;
  border: 1px solid rgba(43, 42, 40, 0.1);
  height: 22px;
}

.code {
  font-family: "Courier New", monospace;
  font-size: 0.95em;
  background: rgba(47, 111, 98, 0.08);
  padding: 2px 6px;
  border-radius: 8px;
}

.term-chip {
  font-family: "Courier New", monospace;
  font-size: 0.92em;
  padding: 2px 6px;
  border-radius: 8px;
  border: 1px solid rgba(43, 42, 40, 0.16);
  background: rgba(47, 111, 98, 0.08);
  color: var(--ink);
  white-space: nowrap;
}

.inline-code {
  font-family: "Courier New", monospace;
  font-size: 0.92em;
  padding: 2px 6px;
  border-radius: 8px;
  background: rgba(43, 42, 40, 0.08);
  color: var(--ink);
}

.examples {
  margin-top: 16px;
}

.examples h3 {
  margin: 0 0 6px;
  font-size: 18px;
  font-style: italic;
}

.example-block {
  margin-top: 14px;
}

.example-preface {
  margin: 8px 0 10px;
  color: var(--muted);
}

.code-panel {
  position: relative;
  border-radius: 16px;
  border: 1px solid rgba(43, 42, 40, 0.14);
  background: rgba(255, 255, 255, 0.8);
  padding: 16px 18px 18px;
}

.code-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.code-panel-title {
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.copy-btn {
  border: 1px solid rgba(43, 42, 40, 0.18);
  background: rgba(255, 255, 255, 0.6);
  border-radius: 10px;
  padding: 6px 10px;
  font-family: "Georgia", "Times New Roman", serif;
  font-size: 13px;
  color: var(--ink);
  cursor: pointer;
  transition: background 150ms ease, border-color 150ms ease, transform 150ms ease;
}

.copy-btn:hover {
  border-color: rgba(47, 111, 98, 0.4);
  background: rgba(47, 111, 98, 0.08);
}

.copy-btn:active {
  transform: translateY(1px);
}

pre.code-block {
  margin: 0;
  font-family: "Courier New", monospace;
  font-size: 14px;
  line-height: 1.6;
  white-space: pre-wrap;
}

.diagram {
  margin-top: 28px;
}

.diagram-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.diagram-header h2 {
  margin: 0;
  font-size: 20px;
  font-style: italic;
}

.diagram-hint {
  margin: 6px 0 12px;
  font-size: 14px;
  color: var(--muted);
}

.diagram-resize {
  resize: vertical;
  overflow: hidden;
  min-height: 260px;
  border-radius: 18px;
  border: 1px solid rgba(43, 42, 40, 0.08);
  background: rgba(255, 255, 255, 0.6);
  padding: 16px 16px 24px;
  box-sizing: border-box;
}

.diagram-canvas {
  width: 100%;
  height: 100%;
}

.diagram-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  color: var(--muted);
}

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

@media (max-width: 820px) {
  .card {
    padding: 32px 28px 36px;
  }

  .narrative {
    font-size: 20px;
  }

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

@media (max-width: 560px) {
  .card {
    padding: 26px 20px 30px;
  }

  h1 {
    font-size: 24px;
  }

  .narrative {
    font-size: 18px;
  }

  .guidance-body {
    font-size: 16px;
  }

  .control-inline select,
  .control-inline input,
  .control-block select,
  .control-block input {
    min-width: 140px;
  }
}

svg {
  width: 100%;
  height: 100%;
  font-family: "Georgia", "Times New Roman", serif;
}

.svg-label {
  font-size: 14px;
  fill: #2b2a28;
}

.svg-sub {
  font-size: 12px;
  fill: #605c56;
}

.svg-badge {
  font-size: 12px;
  fill: #2b2a28;
}

.svg-legend {
  font-size: 11px;
  fill: #605c56;
}