:root {
  --bg0: #e8eef2;
  --bg1: #f4f7f9;
  --ink: #1a2b34;
  --muted: #5a6f7a;
  --line: #c5d2da;
  --accent: #0d6e6e;
  --accent-dark: #0a5555;
  --warn: #9a3412;
  --danger: #b91c1c;
  --ok: #166534;
  --panel: rgba(255, 255, 255, 0.88);
  --shadow: 0 12px 40px rgba(26, 43, 52, 0.08);
  --serif: "Source Serif 4", "Noto Serif SC", Georgia, serif;
  --sans: "Noto Sans SC", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--sans);
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 10% -10%, #c8dde6 0%, transparent 55%),
    radial-gradient(900px 500px at 100% 0%, #d7e8e4 0%, transparent 50%),
    linear-gradient(180deg, var(--bg0), var(--bg1));
}

.page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 28px 20px 48px;
}

.top {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 16px;
}

.brand {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.75rem;
  letter-spacing: 0.04em;
  color: var(--accent-dark);
}

.top h1 {
  margin: 4px 0 6px;
  font-size: 1.15rem;
  font-weight: 600;
}

.tagline {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.5;
  max-width: 42rem;
}

.badge {
  display: inline-block;
  padding: 6px 10px;
  border: 1px solid var(--line);
  background: #fff;
  font-size: 0.8rem;
  color: var(--muted);
}

.disclaimer {
  border-left: 3px solid var(--warn);
  background: #fff7ed;
  color: #7c2d12;
  padding: 10px 14px;
  margin-bottom: 18px;
  font-size: 0.9rem;
  line-height: 1.55;
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-bottom: 18px;
}

.step {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--muted);
  padding: 10px 8px;
  font: inherit;
  cursor: default;
}

.step.active {
  border-color: var(--accent);
  color: var(--accent-dark);
  font-weight: 600;
  box-shadow: inset 0 -3px 0 var(--accent);
}

.panel {
  display: none;
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 22px 22px 18px;
  backdrop-filter: blur(6px);
}

.panel.active { display: block; }

.panel h2 {
  margin: 0 0 8px;
  font-size: 1.2rem;
}

.hint {
  margin: 0 0 16px;
  color: var(--muted);
  line-height: 1.5;
}

.row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 12px;
}

.row.row-controls {
  grid-template-columns: minmax(160px, 1fr) minmax(180px, 1.2fr);
  align-items: end;
}

label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.88rem;
  color: var(--muted);
}

label.block { margin-bottom: 12px; }

input, select, textarea {
  font: inherit;
  color: var(--ink);
  border: 1px solid var(--line);
  background: #fff;
  padding: 10px 12px;
  border-radius: 0;
}

textarea { resize: vertical; line-height: 1.55; }

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 16px;
}

button {
  font: inherit;
  cursor: pointer;
  border: 1px solid var(--line);
  padding: 10px 16px;
  background: #fff;
  color: var(--ink);
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

button.primary:hover:not(:disabled) {
  background: var(--accent-dark);
}

button.ghost:hover:not(:disabled) {
  border-color: var(--accent);
  color: var(--accent-dark);
}

.progress-wrap {
  height: 10px;
  background: #dbe5ea;
  margin: 20px 0 12px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), #1f9a8a);
  transition: width 0.35s ease;
}

.mono {
  font-family: ui-monospace, Consolas, monospace;
  font-size: 0.9rem;
  color: var(--muted);
}

.error {
  color: var(--danger);
  background: #fef2f2;
  border: 1px solid #fecaca;
  padding: 10px 12px;
}

.hidden { display: none !important; }

.dual-grid.single-track {
  grid-template-columns: 1fr;
}

.track.track-disabled {
  opacity: 0.45;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 14px;
}

.feature-grid .full { grid-column: 1 / -1; }

.field-meta {
  font-size: 0.75rem;
  color: #7a8f99;
  margin-top: 4px;
}

.result-block { margin-bottom: 18px; }

.dual-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-top: 12px;
}

.track {
  border: 1px solid var(--line);
  padding: 14px 14px 8px;
  background: rgba(255, 255, 255, 0.65);
  min-width: 0;
}

.track h3 {
  margin: 0 0 10px;
  font-size: 1.05rem;
  color: var(--accent-dark);
}

.recommend-progress {
  margin: 8px 0 14px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  background: #f7fbfb;
}

.chapters-box {
  margin: 8px 0 4px;
  border: 1px dashed var(--line);
  padding: 8px 12px;
  background: #fff;
  font-size: 0.9rem;
}

.chapters-box ul {
  margin: 8px 0 0;
  padding-left: 1.2rem;
  color: var(--muted);
}

@media (max-width: 860px) {
  .dual-grid { grid-template-columns: 1fr; }
}

.risk-item, .advice-item {
  border-top: 1px solid var(--line);
  padding: 12px 0;
}

.risk-item:first-child, .advice-item:first-child { border-top: none; padding-top: 0; }

.risk-level {
  font-family: var(--serif);
  font-size: 1.15rem;
  color: var(--accent-dark);
  margin: 0 0 4px;
}

.pill {
  display: inline-block;
  font-size: 0.75rem;
  padding: 2px 8px;
  margin-right: 6px;
  border: 1px solid var(--line);
  color: var(--muted);
}

.pill.high { border-color: #fca5a5; color: var(--danger); background: #fef2f2; }
.pill.mid { border-color: #fdba74; color: var(--warn); background: #fff7ed; }

.advice-title {
  margin: 6px 0;
  font-weight: 600;
  line-height: 1.45;
}

.advice-ref, .advice-rationale {
  margin: 0;
  font-size: 0.86rem;
  color: var(--muted);
  line-height: 1.5;
}

.disclaimer-bottom {
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.55;
  border-top: 1px dashed var(--line);
  padding-top: 12px;
}

footer {
  margin-top: 28px;
  color: var(--muted);
  font-size: 0.8rem;
  text-align: center;
}

.case-info-section {
  margin: 14px 0 18px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
  padding: 14px 16px 16px;
}

.case-info-head h3 {
  margin: 0 0 6px;
  font-family: var(--serif);
  font-size: 1.25rem;
  color: var(--accent-dark);
}

.case-info-body {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 10px;
}

.case-info-block h4 {
  margin: 0 0 6px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--accent-dark);
}

.case-info-block p {
  margin: 0;
  line-height: 1.65;
  color: var(--ink);
  white-space: pre-wrap;
}

.case-info-list {
  margin: 0;
  padding-left: 1.35rem;
  line-height: 1.7;
  color: var(--ink);
}

.case-info-list li {
  margin: 2px 0;
}

.audit-section {
  margin-top: 28px;
  padding-top: 8px;
}

.audit-head h3 {
  margin: 0 0 6px;
  font-family: var(--serif);
  font-size: 1.25rem;
  color: var(--accent-dark);
}

.audit-trail {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 14px;
}

.audit-card {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
  padding: 14px 16px 16px;
}

.audit-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 8px;
}

.audit-card-title {
  margin: 0 0 4px;
  font-weight: 600;
  line-height: 1.45;
}

.audit-card-sub {
  margin: 0 0 12px;
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.5;
}

.audit-chain {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr) auto minmax(0, 1fr);
  gap: 8px;
  align-items: stretch;
}

.audit-node {
  border: 1px solid #c5d2da;
  background: #f7fbfb;
  padding: 10px 12px;
  min-width: 0;
  overflow: hidden;
}

.audit-node.rule {
  border: 1px solid #c5d2da;
  border-top: 3px solid var(--accent);
}

.audit-node.yaml {
  border: 1px solid #f0c078;
  border-top: 3px solid #b45309;
  background: #fffbeb;
}

.audit-node.md {
  border: 1px solid #93c5fd;
  border-top: 3px solid #1d4ed8;
  background: #eff6ff;
}

.audit-node h5 {
  margin: 0 0 8px;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}

.audit-arrow {
  align-self: center;
  color: var(--muted);
  font-size: 1.1rem;
  padding: 0 2px;
}

.audit-kv {
  margin: 0 0 6px;
  font-size: 0.8rem;
  color: var(--muted);
  word-break: break-all;
}

.audit-pre {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 0.82rem;
  line-height: 1.45;
  max-height: 180px;
  overflow: auto;
  font-family: ui-monospace, Consolas, monospace;
  color: var(--ink);
}

.audit-md-title {
  margin: 0 0 4px;
  font-size: 0.86rem;
  font-weight: 600;
}

.audit-empty {
  font-size: 0.85rem;
  color: var(--muted);
  margin: 0;
}

@media (max-width: 900px) {
  .audit-chain {
    grid-template-columns: 1fr;
  }
  .audit-arrow {
    transform: rotate(90deg);
    justify-self: center;
  }
}

@media (max-width: 720px) {
  .steps { grid-template-columns: 1fr 1fr; }
  .row,
  .row.row-controls,
  .feature-grid { grid-template-columns: 1fr; }
  .top { flex-direction: column; }
}