:root {
  --paper: #f4f0e7;
  --ink: #1c211f;
  --muted: #5b6360;
  --line: #c9c5bb;
  --panel: #fbf8f1;
  --field: #fffdf8;
  --dark: #202724;
  --accent: #6b2f24;
  --ok: #335a46;
  --focus: #1f5fbf;
  --shadow: 0 18px 50px rgba(28, 33, 31, 0.08);
  --v-supported: #7fc79c;
  --v-conditional: #e6b756;
  --v-conflicted: #e8956d;
  --v-avoid: #ef8a7c;
  --v-insufficient: #b9c0bc;
  --v-retest: #8fb4e6;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  * {
    transition: none !important;
  }
}
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family:
    Inter,
    ui-sans-serif,
    system-ui,
    -apple-system,
    'Segoe UI',
    sans-serif;
  line-height: 1.55;
}
a {
  color: inherit;
}
:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}
.skip {
  position: absolute;
  left: -999px;
  top: 8px;
  background: var(--dark);
  color: #fff;
  padding: 10px 14px;
  z-index: 50;
}
.skip:focus {
  left: 8px;
}
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 14px clamp(16px, 4vw, 64px);
  border-bottom: 1px solid var(--line);
  background: rgba(244, 240, 231, 0.95);
  backdrop-filter: blur(16px);
}
.brand {
  font-family: Georgia, serif;
  font-size: 20px;
  font-weight: 700;
  text-decoration: none;
  margin-right: auto;
}
nav {
  display: flex;
  gap: 4px;
  font-size: 14px;
}
nav a {
  text-decoration: none;
  color: var(--muted);
  padding: 6px 10px;
  border-radius: 3px;
}
nav a:hover {
  color: var(--ink);
}
nav a[aria-current='page'] {
  color: var(--ink);
  font-weight: 700;
  box-shadow: inset 0 -2px 0 var(--accent);
}
.mode-badge {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  border: 1px solid var(--line);
  padding: 6px 10px;
  border-radius: 999px;
  white-space: nowrap;
}
.mode-badge.live {
  border-color: var(--ok);
  color: var(--ok);
}
.mode-badge.live::before {
  content: '';
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ok);
  margin-right: 7px;
}
main {
  width: min(1120px, calc(100% - 32px));
  margin: auto;
}
.hero {
  padding: clamp(36px, 6vw, 72px) 0 32px;
  max-width: 900px;
}
.hero.compact {
  padding-bottom: 36px;
}
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 11px;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 12px;
}
h1,
h2,
h3 {
  font-family: Georgia, 'Times New Roman', serif;
  line-height: 1.08;
  margin: 0;
}
h1 {
  font-size: clamp(34px, 5.6vw, 62px);
  letter-spacing: -0.03em;
}
h2 {
  font-size: clamp(28px, 3.4vw, 42px);
  letter-spacing: -0.02em;
}
h3 {
  font-size: 22px;
}
.lede {
  font-size: clamp(17px, 2vw, 21px);
  max-width: 720px;
  color: var(--muted);
  margin: 20px 0 0;
}
.button {
  appearance: none;
  border: 1px solid var(--dark);
  background: transparent;
  color: var(--dark);
  padding: 13px 22px;
  border-radius: 3px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  min-height: 48px;
  transition:
    background 0.15s,
    transform 0.15s;
}
.button.primary {
  background: var(--dark);
  color: #fff;
}
.button:hover:not(:disabled) {
  transform: translateY(-1px);
}
.button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: clamp(20px, 3.5vw, 44px);
  margin-bottom: 28px;
}
.panel-head {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: flex-end;
  flex-wrap: wrap;
  margin-bottom: 28px;
}
.panel-note {
  margin: 0;
  max-width: 420px;
  color: var(--muted);
  font-size: 14px;
}
.presets {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.presets-label {
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-right: 4px;
}
.chip {
  appearance: none;
  border: 1px solid var(--line);
  background: var(--field);
  color: var(--ink);
  padding: 9px 14px;
  border-radius: 999px;
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  min-height: 40px;
}
.chip:hover {
  border-color: var(--dark);
}
.chip.featured {
  background: var(--dark);
  border-color: var(--dark);
  color: #fff;
}
.scenario {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}
.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  border: 0;
  padding: 0;
  margin: 0;
  min-width: 0;
}
label,
legend {
  font-size: 13px;
  font-weight: 700;
  padding: 0;
}
select,
input[type='number'] {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--line);
  background-color: var(--field);
  padding: 11px 14px;
  color: var(--ink);
  font: inherit;
  font-size: 15px;
  border-radius: 3px;
}
select:hover,
input[type='number']:hover {
  border-color: #8f8b80;
}
.select {
  position: relative;
}
select {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 44px;
  cursor: pointer;
  text-overflow: ellipsis;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='9' viewBox='0 0 14 9'%3E%3Cpath d='M1 1.5l6 6 6-6' fill='none' stroke='%231c211f' stroke-width='2'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
}
select:disabled {
  color: var(--muted);
  cursor: progress;
}
optgroup {
  font-style: normal;
  font-weight: 700;
}
.segmented {
  display: flex;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: var(--field);
  overflow: hidden;
}
.segmented label {
  flex: 1;
  position: relative;
  font-weight: 600;
  cursor: pointer;
}
.segmented input {
  position: absolute;
  opacity: 0;
  inset: 0;
  cursor: pointer;
}
.segmented span {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 46px;
  padding: 8px 10px;
  font-size: 14px;
  border-left: 1px solid var(--line);
}
.segmented label:first-child span {
  border-left: 0;
}
.segmented input:checked + span {
  background: var(--dark);
  color: #fff;
}
.segmented input:focus-visible + span {
  outline: 3px solid var(--focus);
  outline-offset: -3px;
}
.segmented label:hover input:not(:checked) + span {
  background: #efeadf;
}
.actions {
  grid-column: 1/-1;
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
}
.actions.wide {
  grid-column: 1/-1;
}
.form-error {
  margin: 0;
  color: var(--accent);
  font-weight: 600;
  font-size: 14px;
}
.result-shell {
  margin: 0 0 28px;
  background: var(--dark);
  color: #f7f4ec;
  padding: clamp(22px, 4.5vw, 52px);
  scroll-margin-top: 80px;
}
.result-shell[hidden] {
  display: none;
}
.result-header {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: flex-start;
}
.result-shell .eyebrow {
  color: #dcae94;
}
.verdict {
  font-family: Georgia, serif;
  font-size: clamp(40px, 6vw, 72px);
  line-height: 1;
  color: var(--v-insufficient);
}
.verdict[data-v='SUPPORTED'] {
  color: var(--v-supported);
}
.verdict[data-v='CONDITIONAL'] {
  color: var(--v-conditional);
}
.verdict[data-v='CONFLICTED'] {
  color: var(--v-conflicted);
}
.verdict[data-v='AVOID'] {
  color: var(--v-avoid);
}
.verdict[data-v='RETEST'] {
  color: var(--v-retest);
}
.verdict-meaning {
  margin: 10px 0 0;
  color: #c4ccc7;
  font-size: 15px;
  max-width: 560px;
}
.result-meta {
  font-size: 12px;
  color: #c4ccc7;
  text-align: right;
  white-space: nowrap;
}
.result-summary {
  font-size: 19px;
  max-width: 900px;
  color: #dbe1dd;
  margin: 24px 0 28px;
}
.result-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.6fr;
  gap: 16px;
}
.result-card {
  border: 1px solid #52605a;
  padding: 22px;
  background: #252e2a;
  min-width: 0;
}
.result-card h3 {
  margin-bottom: 16px;
}
.deduction {
  border-top: 1px solid #46524d;
  padding: 14px 0;
}
.deduction:first-child {
  border-top: 0;
  padding-top: 0;
}
.deduction .code {
  font:
    700 10px ui-monospace,
    SFMono-Regular,
    Menlo,
    monospace;
  letter-spacing: 0.08em;
  color: #b9c4be;
  overflow-wrap: anywhere;
}
.deduction p {
  margin: 4px 0 0;
  color: #f0eee7;
}
.baseline-box {
  padding: 16px;
  border: 1px solid #5d6964;
}
.baseline-box .eyebrow {
  font-size: 10px;
}
.baseline-box strong {
  display: block;
  font-size: 22px;
  margin-bottom: 7px;
}
.baseline-box p {
  color: #d1d7d3;
  margin: 6px 0 0;
}
.sources-card {
  margin-top: 16px;
}
.source {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 15px;
  border-top: 1px solid #46524d;
  padding: 13px 0;
}
.source:first-of-type {
  border-top: 0;
}
.source small {
  display: block;
  color: #aeb9b3;
}
.source a {
  color: #fff;
  white-space: nowrap;
}
.code-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}
.code-list code {
  border: 1px solid #46524d;
  padding: 7px 9px;
  color: #dbe1dd;
  background: #1e2522;
  font-size: 11px;
}
.legend dl {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px 24px;
  margin: 26px 0 0;
}
.legend dt {
  font:
    700 12px ui-monospace,
    Menlo,
    monospace;
  letter-spacing: 0.06em;
  display: flex;
  align-items: center;
  gap: 8px;
}
.legend dt::before {
  content: '';
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--v-insufficient);
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.28);
}
.legend dt[data-v='SUPPORTED']::before {
  background: var(--v-supported);
}
.legend dt[data-v='CONDITIONAL']::before {
  background: var(--v-conditional);
}
.legend dt[data-v='CONFLICTED']::before {
  background: var(--v-conflicted);
}
.legend dt[data-v='AVOID']::before {
  background: var(--v-avoid);
}
.legend dt[data-v='RETEST']::before {
  background: var(--v-retest);
}
.legend dd {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 14px;
}
.calc-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}
.calc-result {
  margin-top: 20px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 14px;
  min-height: 1.5em;
  overflow-wrap: anywhere;
}
.calc-result.err {
  color: var(--accent);
}
.closing {
  padding: 56px 0 80px;
  max-width: 800px;
}
.closing p {
  font-size: 19px;
  color: var(--muted);
}
footer {
  border-top: 1px solid var(--line);
  padding: 26px clamp(16px, 4vw, 64px);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 12px;
}
.stats {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.stat {
  border: 1px solid var(--line);
  padding: 14px 18px;
  background: #fff;
}
.stat b {
  display: block;
  font-size: 25px;
  font-family: Georgia, serif;
}
.table-wrap {
  overflow: auto;
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
th,
td {
  text-align: left;
  border-bottom: 1px solid var(--line);
  padding: 14px 10px;
  vertical-align: top;
}
th {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 10px;
}
.pass {
  color: var(--ok);
  font-weight: 800;
}
.fail {
  color: var(--accent);
  font-weight: 800;
}
.method-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-bottom: 28px;
}
.method-card {
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 30px;
}
.method-card > span {
  font:
    700 11px ui-monospace,
    monospace;
  color: var(--accent);
}
.method-card h2 {
  font-size: 30px;
  margin: 12px 0;
}
.method-card p {
  color: var(--muted);
  margin: 0;
}
.architecture pre {
  font-size: clamp(12px, 2vw, 17px);
  overflow: auto;
  line-height: 1.45;
  margin: 0;
}
code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}
.page-msg {
  color: var(--accent);
  font-weight: 600;
}
.ask {
  grid-column: 1/-1;
  margin-bottom: 26px;
  padding-bottom: 26px;
  border-bottom: 1px solid var(--line);
}
.ask label {
  display: block;
  margin-bottom: 8px;
}
.ask-row {
  display: flex;
  gap: 10px;
}
.ask-row input {
  flex: 1;
  min-width: 0;
  min-height: 48px;
  border: 1px solid var(--line);
  background: var(--field);
  padding: 11px 14px;
  color: var(--ink);
  font: inherit;
  font-size: 15px;
  border-radius: 3px;
}
.ask-out {
  margin-top: 10px;
  font-size: 14px;
  color: var(--muted);
}
.ask-out b {
  color: var(--ink);
}
.ask-out .opts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}
.ask-out p {
  margin: 4px 0;
}
.kb {
  margin-top: 10px;
  padding: 10px 12px;
  border-left: 3px solid #7fa08e;
  background: #1e2522;
}
.kb-label {
  display: block;
  font:
    700 10px ui-monospace,
    Menlo,
    monospace;
  letter-spacing: 0.08em;
  color: #9fc4b0;
  text-transform: uppercase;
}
.kb p {
  margin: 6px 0 0;
  color: #dbe1dd;
  font-size: 14px;
}
.kb details {
  margin-top: 8px;
}
.kb summary {
  cursor: pointer;
  font-size: 12px;
  color: #b9c4be;
}
.kb-same {
  margin: 8px 0 0;
  font-size: 12px;
  color: #9aa6a0;
}
.kb-text {
  white-space: pre-wrap;
  font:
    12px/1.5 ui-monospace,
    Menlo,
    monospace;
  color: #c4ccc7;
  max-height: 260px;
  overflow: auto;
  margin: 8px 0 0;
}
.ratings {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.ratings th,
.ratings td {
  border-bottom: 1px solid #46524d;
  padding: 7px 8px;
  text-align: left;
  color: #dbe1dd;
}
.ratings th {
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #9aa6a0;
}
.ratings .hl {
  background: rgba(223, 190, 110, 0.12);
}
.ratings-note {
  margin: 10px 0 0;
  font-size: 12px;
  color: #9aa6a0;
}
.rt {
  display: inline-block;
  min-width: 24px;
  padding: 1px 6px;
  border-radius: 3px;
  text-align: center;
  font:
    700 12px ui-monospace,
    Menlo,
    monospace;
  color: #9aa6a0;
}
.r-P {
  background: rgba(127, 199, 156, 0.22);
  color: #9fe0b8;
}
.r-T {
  background: rgba(230, 183, 86, 0.22);
  color: #f0c870;
}
.r-U {
  background: rgba(239, 138, 124, 0.24);
  color: #ffa89c;
}
.trace {
  width: 100%;
  border-collapse: collapse;
  font:
    12px ui-monospace,
    SFMono-Regular,
    Menlo,
    monospace;
}
.trace th,
.trace td {
  overflow-wrap: anywhere;
  border-bottom: 1px solid #46524d;
  padding: 8px 6px;
  text-align: left;
  color: #dbe1dd;
}
.trace th {
  font-size: 10px;
  letter-spacing: 0.08em;
  color: #9aa6a0;
  text-transform: uppercase;
}
.trace .num {
  text-align: right;
  white-space: nowrap;
}
.trace .fail {
  color: #ef8a7c;
}
.trace .tag {
  color: #9fc4b0;
}
@media (max-width: 800px) {
  .scenario,
  .result-grid,
  .calc-grid,
  .method-grid,
  .legend dl {
    grid-template-columns: 1fr;
  }
  .topbar {
    flex-wrap: wrap;
    gap: 8px 16px;
  }
  .brand {
    margin-right: 0;
  }
  nav {
    order: 3;
    width: 100%;
    margin-left: -10px;
  }
  .mode-badge {
    margin-left: auto;
  }
  .result-header {
    display: block;
  }
  .result-meta {
    text-align: left;
    margin-top: 12px;
    white-space: normal;
  }
  .segmented span {
    font-size: 13px;
  }
  .source {
    grid-template-columns: 1fr;
  }
  .actions .button {
    width: 100%;
  }
  .ask-row {
    flex-direction: column;
  }
  .ask-row .button {
    width: 100%;
  }
  .panel-head {
    align-items: flex-start;
  }
}