:root {
  color-scheme: light;
  --bg: #f6f8fb;
  --panel: #ffffff;
  --panel-soft: #eef4ff;
  --line: #d7deea;
  --text: #101828;
  --muted: #5b6577;
  --accent: #2563eb;
  --accent-2: #0f766e;
  --warning: #b45309;
  --ok: #166534;
  --danger: #b42318;
  --shadow: 0 12px 30px rgba(16, 24, 40, 0.08);
  --radius: 12px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.55 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
  min-height: 100vh;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.site-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 0 10px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  letter-spacing: 0;
}

.brand-mark {
  width: 12px;
  height: 12px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 0 6px rgba(37, 99, 235, 0.12);
}

.nav {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.nav a {
  color: var(--muted);
  padding: 8px 10px;
  border-radius: 999px;
}

.nav a.active {
  color: var(--text);
  background: rgba(37, 99, 235, 0.08);
}

.hero {
  background: linear-gradient(180deg, #ffffff 0%, #f9fbff 100%);
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: var(--shadow);
  padding: 24px;
  margin: 12px 0 18px;
}

.tool-map {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 8px 0 14px;
}

.tool-map-item {
  display: grid;
  gap: 4px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  color: var(--muted);
  box-shadow: var(--shadow);
}

.tool-map-item strong {
  color: var(--text);
}

.tool-map-item span {
  font-size: 14px;
}

.tool-map-item:hover {
  text-decoration: none;
  border-color: rgba(37, 99, 235, 0.35);
}

.tool-map-item.is-active {
  background: rgba(37, 99, 235, 0.08);
  border-color: rgba(37, 99, 235, 0.28);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: 20px;
  align-items: start;
}

.eyebrow {
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 12px;
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.08;
  letter-spacing: 0;
}

.lede {
  max-width: 60ch;
  color: var(--muted);
  font-size: 16px;
}

.callouts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.callout {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px;
}

.callout strong {
  display: block;
  margin-bottom: 4px;
}

.tool {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 18px;
  box-shadow: var(--shadow);
}

.tool h2 {
  font-size: 20px;
  margin-bottom: 10px;
}

.field {
  margin-bottom: 12px;
}

.field label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 6px;
}

.field input,
.field textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  background: #fff;
  color: var(--text);
  font: inherit;
}

.field textarea {
  min-height: 92px;
  resize: vertical;
}

.secret-field {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: stretch;
}

.secret-field input {
  border-radius: 12px 0 0 12px;
}

.icon-btn {
  appearance: none;
  border: 1px solid var(--line);
  border-left: 0;
  border-radius: 0 12px 12px 0;
  background: #f8fafc;
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-size: 13px;
  font-weight: 700;
  padding: 0 12px;
}

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

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 10px;
}

.btn {
  appearance: none;
  border: 1px solid transparent;
  border-radius: 12px;
  padding: 12px 16px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

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

.btn-secondary {
  background: #fff;
  border-color: var(--line);
  color: var(--text);
}

.btn-ghost {
  background: rgba(15, 118, 110, 0.08);
  color: var(--accent-2);
}

.hint {
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
}

.model-picker {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  min-height: 48px;
  max-height: 180px;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px;
  background: #fff;
}

.model-search {
  margin-bottom: 8px;
}

.model-chip {
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  appearance: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #f8fafc;
  color: var(--text);
  cursor: pointer;
  font: inherit;
  font-size: 13px;
  padding: 8px 10px;
}

.model-chip:hover,
.model-chip.is-active {
  border-color: var(--accent);
  background: rgba(37, 99, 235, 0.1);
  color: var(--accent);
}

.results {
  margin-top: 18px;
  display: grid;
  gap: 14px;
}

.result-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px;
  min-width: 0;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.metric {
  background: var(--panel-soft);
  border: 1px solid rgba(37, 99, 235, 0.12);
  border-radius: 12px;
  padding: 12px;
}

.metric .label {
  color: var(--muted);
  font-size: 12px;
  margin-bottom: 4px;
}

.metric .value {
  font-size: 18px;
  font-weight: 700;
}

.status-pass {
  color: var(--ok);
}

.status-partial {
  color: var(--warning);
}

.status-warning {
  color: var(--warning);
}

.status-fail {
  color: var(--danger);
}

.details {
  display: grid;
  gap: 10px;
}

.details summary {
  cursor: pointer;
  font-weight: 700;
}

.explain-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.explain-grid > div {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  background: #fff;
}

.explain-grid strong {
  display: block;
  margin-bottom: 4px;
}

.explain-grid p {
  margin: 0;
}

.faq-list {
  display: grid;
  gap: 10px;
}

.faq-item {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  background: #fff;
}

.faq-item summary {
  cursor: pointer;
  font-weight: 700;
}

.faq-item p {
  margin: 10px 0 0;
  color: var(--muted);
}

.code {
  overflow: auto;
  max-width: 100%;
  max-height: 280px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  word-break: break-word;
  border-radius: 12px;
  padding: 14px;
  background: #0b1220;
  color: #d7e1f8;
  font-size: 13px;
}

.advanced-results summary {
  cursor: pointer;
  font-weight: 700;
}

.advanced-stack {
  display: grid;
  gap: 14px;
  margin-top: 14px;
}

.advanced-stack h3 {
  margin-bottom: 8px;
}

.page-band {
  display: grid;
  gap: 12px;
  margin: 16px 0 24px;
  padding: 18px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.page-band h2 {
  margin: 0;
  font-size: 26px;
}

.page-band p {
  margin: 0;
  color: var(--muted);
}

.page-cta {
  margin-top: 12px;
}

.footer {
  padding: 24px 0 40px;
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 920px) {
  .tool-map,
  .hero-grid,
  .result-grid,
  .explain-grid,
  .callouts,
  .row {
    grid-template-columns: 1fr;
  }
}