/* QuantCoda: a calm developer workspace. Layers: header 50, menu 51,
   toast/consent 100, skip link 110. Dark is the product's brand default. */
:root {
  --bg: #0b100e; --bg-deep: #080d0b; --bg-raise: #111915;
  --ink: #edf4f0; --ink-2: #b7c6be; --muted: #99aaa0;
  --line: #27362d; --line-strong: #40564a;
  --accent: #73deb0; --accent-deep: #73deb0; --accent-wash: #192e23;
  --glow: rgb(115 222 176 / .12);
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --serif: var(--sans); /* Compatibility alias for existing page templates. */
}
html { color-scheme: dark; scroll-padding-top: 0; }
body { line-height: 1.65; }
body::before { display: none; }
.rise { animation: none; }
[hidden] { display: none !important; }
.catalog-tools[hidden], .docs-search[hidden] { display: block !important; visibility: hidden; }
button, input, textarea, select { font: inherit; }
button, a, summary, input, select { touch-action: manipulation; -webkit-tap-highlight-color: rgb(115 222 176 / .16); }
button:disabled { cursor: wait; opacity: .6; }
.btn:disabled, .btn[aria-disabled="true"] { transform: none; box-shadow: none; filter: none; }
input, select, textarea { accent-color: var(--accent); }
select { background-color: var(--bg-deep); color: var(--ink); }
h1, h2, h3 { text-wrap: balance; }
h1, h2, h3, section[id], article[id], .ep[id], .results { scroll-margin-top: 94px; }
p { text-wrap: pretty; }
p a:not(.btn) { text-decoration: underline; text-underline-offset: .2em; text-decoration-thickness: 1px; }
pre, code, .mono, .price, .stat b { font-variant-numeric: tabular-nums; }
pre, code { tab-size: 2; }
pre { max-width: 100%; }
img { max-width: 100%; height: auto; }
.wrap { max-width: 1200px; padding-inline: 32px; }
.h1 { font-size: clamp(32px, 4.8vw, 54px); font-weight: 640; line-height: 1.12; }
.h2 { font-weight: 620; }
.kicker { font-size: 11px; letter-spacing: .12em; white-space: normal; }
.lede { line-height: 1.65; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
#main-content:focus { outline: none; }
.skip-link { position: fixed; top: 12px; left: 16px; z-index: 110; padding: 10px 18px; background: var(--accent); color: var(--bg); border-radius: 6px; transform: translateY(-160%); }
.skip-link:focus { transform: none; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
.nav { background: rgb(11 16 14 / .96); }
.nav-inner { height: 72px; gap: 42px; }
.brand { font-size: 18px; letter-spacing: -.035em; white-space: nowrap; }
.brand svg { width: 25px; height: 25px; filter: none; }
.nav-links { gap: 28px; font-size: 14px; }
.nav-links a { padding: 24px 0; }
.nav-links a[aria-current="page"] { color: var(--ink); box-shadow: inset 0 -2px var(--accent); }
.nav-cta { gap: 22px; font-size: 13px; min-width: 0; }
.nav-cta .btn { max-width: 210px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.nav-toggle { display: none; }
.mobile-nav { display: none; }
.btn { display: inline-flex; justify-content: center; align-items: center; gap: 10px; min-height: 46px; padding: 10px 21px; border-radius: 6px; font-size: 14px; line-height: 1.4; letter-spacing: 0; font-weight: 650; }
.btn-sm { min-height: 40px; padding: 8px 16px; font-size: 13px; }
.btn-ink { background: var(--accent); color: #092015; box-shadow: none; }
.btn-ink:hover { background: #a0edcc; box-shadow: none; filter: none; }
.btn-ghost, .btn-outline { color: var(--ink); border-color: var(--line-strong); background: transparent; }
.btn-ghost:hover, .btn-outline:hover { background: var(--accent-wash); color: var(--ink); border-color: var(--muted); }
.btn:active { transform: translateY(1px); }
.card { border-radius: 10px; }
.hud::before, .hud::after { display: none; }
table.data { font-size: 14px; }
table.data th { color: var(--muted); letter-spacing: .025em; }
table.data tbody tr:hover { background: rgb(115 222 176 / .025); }
pre.code { font-size: 13px; border-radius: 8px; padding: 22px; }
.field label { font-size: 14px; }
.field input { min-height: 48px; font-size: 16px; border-radius: 6px; }
.field input[aria-invalid="true"] { border-color: var(--red); }
.form-err { line-height: 1.5; }
.form-err:not(:empty) { padding: 12px 14px; border-left: 2px solid var(--red); background: rgb(255 107 92 / .07); margin-bottom: 18px; }
.field-error { margin-top: 6px; color: var(--red); font-size: 13px; }
.password-shell { position: relative; }
.password-shell input { padding-right: 78px; }
.password-shell .password-toggle { position: absolute; right: 4px; top: 4px; min-height: 40px; min-width: 62px; border: 0; border-radius: 4px; color: var(--ink-2); background: transparent; font-size: 12px; cursor: pointer; }
.password-shell .password-toggle:hover { color: var(--accent); background: var(--accent-wash); }
.auth-wrap { max-width: 480px; margin: 64px auto 32px; padding: 0 24px; }
.auth-wrap h1 { letter-spacing: -.035em; font-size: 32px; }
.auth-card { padding: 30px; }
.auth-foot { line-height: 1.9; }
.auth-foot a { text-underline-offset: 4px; }
.auth-foot a:hover { text-decoration: underline; }
footer { margin-top: 88px; padding: 40px 0 36px; }
.foot-inner { display: grid; grid-template-columns: 170px 1fr; align-items: start; gap: 24px 40px; }
.foot-inner .links { gap: 8px 24px; font-size: 13px; }
.foot-inner .links a, .foot-inner .links button { padding-block: 6px; }
.foot-inner .copy { grid-column: 2; margin: 0; font-family: var(--sans); font-size: 12px; }
.ui-toast { position: fixed; bottom: max(24px, env(safe-area-inset-bottom)); left: 50%; z-index: 100; transform: translateX(-50%); width: max-content; max-width: calc(100% - 32px); background: var(--ink); color: var(--bg); box-shadow: 0 8px 30px rgb(0 0 0 / .2); border-radius: 7px; font-size: 14px; }
.ui-toast:not(:empty) { padding: 12px 20px; }
.copy-wrap { position: relative; min-width: 0; }
.copy-wrap > pre.code { padding-top: 52px; }
.copy-button { min-height: 34px; padding: 5px 11px; border: 1px solid var(--line-strong); background: var(--bg-raise); color: var(--ink-2); border-radius: 5px; font: 12px var(--sans); cursor: pointer; }
.copy-button:hover { color: var(--ink); border-color: var(--accent); }
.copy-wrap > .copy-button { position: absolute; right: 12px; top: 10px; }
/* Catalog and category pages share one reading grid. */
.atlas-hero { background: none; padding: 64px 0 40px; }
.atlas-hero::after { display: none; }
.atlas-copy { max-width: 1200px; }
.atlas-copy h1 { max-width: 820px; }
.atlas-copy .lede { max-width: 740px; }
.signal-key { margin-top: 28px; }
.signal-key i { box-shadow: none; }
.atlas { padding: 24px 32px 0; }
.atlas::before { display: none; }
.atlas-row { grid-template-columns: 56px minmax(0, 1fr); padding: 30px 0; }
.atlas-signal i { display: none; }
.atlas-signal span { font-size: 13px; }
.atlas-name small { font-size: 10px; color: var(--muted); }
.atlas-name h2 { font-size: 26px; font-weight: 620; letter-spacing: -.03em; }
.atlas-name p { font-size: 14px; }
.atlas-body { grid-template-columns: 1.05fr 1fr; gap: 60px; }
.endpoint-link { background: var(--bg-raise); border-radius: 5px; }
.atlas-detail { font-family: var(--sans); font-size: 13px; }
.atlas-detail:hover { text-decoration: underline; text-underline-offset: 4px; }
.etf-spectrum article, .topic-spectrum article, .topic-endpoint-grid article { background: var(--bg-raise); }
.catalog-tools { margin-top: 32px; padding-bottom: 24px; border-bottom: 1px solid var(--line); }
.search-field { display: flex; align-items: center; gap: 12px; }
.search-field input { width: 100%; min-width: 0; min-height: 48px; padding: 11px 14px; border: 1px solid var(--line-strong); border-radius: 7px; background: var(--bg-deep); color: var(--ink); font-size: 16px; }
.search-field button { flex-shrink: 0; }
.search-hint { margin-top: 10px; color: var(--muted); font-size: 13px; }
.catalog-tools .search-field { max-width: 600px; }
.catalog-empty { padding: 40px 0; color: var(--ink-2); }
/* Documentation: compact controls and contained, keyboard-scrollable tables. */
.docs-layout { max-width: 1320px; grid-template-columns: 240px minmax(0, 860px); gap: 48px; padding-top: 32px; }
.toc { top: 96px; max-height: calc(100dvh - 120px); padding-right: 18px; }
.toc a { min-height: 34px; padding-block: 8px; }
.toc details summary { letter-spacing: .035em; font-family: var(--sans); text-transform: none; font-size: 12px; padding-block: 12px; }
.toc-filter { font-size: 14px; min-height: 42px; }
.docs-title { font-weight: 640; }
.docs-meta { border-radius: 7px; }
.ep { background: var(--bg-raise); border-radius: 9px; }
.ep:target { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-wash); }
.ep-head .method, .ep-head .factor-kind { border-color: var(--line-strong); }
.ep .data-panel { background: var(--bg-deep); }
.data-panel, .fields-body, .key-table, .result-table { overscroll-behavior-inline: contain; }
.data-panel th, .fields-body th { position: sticky; top: 0; z-index: 1; background: var(--bg-raise); }
.docs-search { margin: 0 0 26px; }
.docs-search-results { margin-top: 12px; padding: 8px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg-raise); }
.docs-search-results a { display: flex; justify-content: space-between; gap: 16px; padding: 12px; border-radius: 5px; font-size: 14px; }
.docs-search-results a:hover, .docs-search-results a:focus-visible { background: var(--accent-wash); }
.docs-search-results code { color: var(--muted); font-size: 11px; overflow-wrap: anywhere; }
.docs-search-results p { padding: 12px; }
/* Pricing is a comparison; equal plan widths are intentional. */
.pricing-hero { padding: 60px 0 16px; }
.pricing-hero .lede { max-width: 660px; margin-inline: auto; }
.cycle { border-radius: 8px; background: var(--bg-deep); }
.cycle button { min-height: 44px; padding: 10px 18px; border-radius: 5px; color: var(--ink-2); }
.cycle button:hover { color: var(--ink); background: var(--accent-wash); }
.cycle button.on { color: #092015; background: var(--accent); }
.plans { max-width: 1136px; gap: 18px; }
.plan { padding: 30px 26px; border-radius: 10px; }
.plan.hot { box-shadow: none; border-color: var(--accent); }
.plan .price { margin-top: 24px; font: 620 42px/1.3 var(--sans); letter-spacing: -.05em; }
.plan .role { min-height: 44px; color: var(--ink-2); font-weight: 400; }
.plan .calls { margin-top: 24px; padding-block: 18px; font-size: 13px; }
.plan .calls b { font: 600 15px var(--sans); }
.plan li { padding: 7px 0; }
.plan li::before { content: "✓"; margin-right: 9px; }
.plan .btn { width: 100%; }
.pricing-faq { max-width: 780px; margin: 64px auto 0; }
.pricing-faq h2 { margin-bottom: 22px; font-size: 28px; }
.pricing-faq details { border-bottom: 1px solid var(--line); padding-block: 18px; }
.pricing-faq summary { cursor: pointer; font-weight: 600; }
.pricing-faq details p { margin-top: 12px; color: var(--ink-2); }
/* Authenticated surfaces stay task-first. */
.console { padding-top: 36px; }
.console-head { margin-bottom: 28px; }
.console-head .logout { border: 1px solid var(--line); border-radius: 5px; background: transparent; padding: 6px 12px; }
.console-head .muted { overflow-wrap: anywhere; }
.stat { padding: 24px; }
.stat b { font-family: var(--sans); font-size: 34px; letter-spacing: -.04em; }
.panel-head { gap: 16px; flex-wrap: wrap; }
.panel-head .act { margin-left: auto; }
.activation-aside .mono { margin-bottom: 40px; }
.activation-stage h2 { font-size: 32px; }
.secret-shell, .access-code { background: var(--bg-deep); color: var(--ink); border-radius: 7px; }
.secret-shell code { color: var(--ink); }
.console-dialog { width: min(440px, calc(100% - 32px)); margin: auto; padding: 28px; border: 1px solid var(--line-strong); border-radius: 12px; background: var(--bg-raise); color: var(--ink); overscroll-behavior: contain; }
.console-dialog::backdrop { background: rgb(0 0 0 / .65); }
.console-dialog h2 { margin-bottom: 12px; font-size: 24px; }
.console-dialog p { margin-bottom: 22px; color: var(--ink-2); }
.dialog-actions { display: flex; justify-content: flex-end; gap: 10px; }
.revoke { min-height: 40px; padding: 6px 10px; }
@media (max-width: 1024px) {
  .nav-inner { gap: 28px; }
  .nav-cta { gap: 14px; }
  .docs-layout { grid-template-columns: 200px minmax(0, 1fr); gap: 28px; }
}
@media (max-width: 920px) {
  .docs-layout { grid-template-columns: minmax(0, 1fr); }
  .toc { display: none; }
  .mobile-toc { display: block; }
}
@media (max-width: 767px) {
  .wrap { padding-inline: max(20px, env(safe-area-inset-left)); }
  .nav-inner { height: 64px; gap: 12px; }
  .nav-links, .nav-cta .login-link { display: none; }
  .nav-cta { gap: 14px; }
  .nav-cta > .signin:not(.lang-switch) { display: none; }
  .nav-cta .btn { display: none; }
  .brand { font-size: 17px; }
  .nav-toggle { display: inline-flex; gap: 10px; align-items: center; min-height: 44px; padding: 8px 10px; border: 1px solid var(--line); border-radius: 5px; color: var(--ink); background: transparent; font-size: 13px; cursor: pointer; }
  .nav-toggle span { font-size: 18px; }
  .mobile-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 4px 12px; padding-block: 12px 20px; border-top: 1px solid var(--line); max-height: calc(100dvh - 64px); overflow-y: auto; overscroll-behavior: contain; }
  .mobile-nav a { min-height: 46px; padding: 12px; border-radius: 5px; color: var(--ink-2); font-size: 14px; }
  .mobile-nav a[aria-current="page"] { background: var(--accent-wash); color: var(--ink); box-shadow: inset 3px 0 var(--accent); }
  .mobile-nav a:hover { background: var(--accent-wash); color: var(--ink); }
  .foot-inner { grid-template-columns: 1fr; gap: 24px; }
  .foot-inner .copy { grid-column: 1; }
  .foot-inner .links { gap: 4px 20px; }
  .foot-inner .links a, .foot-inner .links button { min-height: 44px; display: inline-flex; align-items: center; }
  .atlas-hero { padding: 40px 0 30px; }
  .atlas-copy h1 { font-size: 36px; }
  .atlas-body { grid-template-columns: 1fr; gap: 20px; }
  .atlas-row { grid-template-columns: minmax(0, 1fr); }
  .atlas-signal { display: none; }
  .atlas-detail { min-height: 44px; }
  .plans { grid-template-columns: minmax(0, 1fr); margin-top: 30px; gap: 24px; }
  .plan .role { min-height: 0; }
  .pricing-hero { padding-top: 40px; }
  .cycle { display: flex; max-width: 100%; }
  .cycle button { white-space: normal; flex: 1; font-size: 13px; padding: 10px; }
  .cycle .save { display: block; margin-left: 0; margin-top: 4px; font-size: 11px; }
  .auth-wrap { margin-top: 40px; }
  .auth-card { padding: 24px; }
  .docs-layout { padding-top: 24px; }
  .docs-search-results a { flex-direction: column; gap: 4px; }
  .ep { padding: 20px 16px; }
  .docs-meta { grid-template-columns: 1fr 1fr; }
  .guide-card-head { flex-wrap: wrap; gap: 8px; }
  .stats { grid-template-columns: 1fr; gap: 10px; }
  .stat { padding: 18px 22px; }
  .console-head .logout { margin-left: 0; }
  .activation-card { grid-template-columns: 1fr; }
  .activation-aside { padding: 24px; border-right: 0; border-bottom: 1px solid var(--line); }
  .activation-main { padding: 28px 22px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}
@media (prefers-reduced-transparency: reduce) {
  .nav { background: var(--bg); backdrop-filter: none; -webkit-backdrop-filter: none; }
}
.key-table td:nth-child(2) { max-width: 220px; overflow-wrap: anywhere; }
.factor-option:focus-within { outline: 2px solid var(--accent); outline-offset: 2px; }
.factor-option { position: relative; }
.lab { padding-top: 32px; }
.lab-head h1 { font-size: 42px; line-height: 1.12; }
.run-tape { background: var(--bg-raise); border-radius: 8px; }
.run-tape span { color: var(--muted); }
.run-tape i { box-shadow: none; }
.workbench { top: 96px; }
.results { min-height: 470px; }
.empty-run { min-height: 340px; border-radius: 7px; }
.lab-field textarea, .lab-field input, .lab-field select { font-size: 16px; }
.result-meta b { overflow-wrap: anywhere; }
.result-head { flex-wrap: wrap; }
.password-control .password-toggle { min-height: 40px; min-width: 54px; }
.verify-actions button { min-height: 44px; padding-inline: 4px; }
@media (max-width: 880px) { .workbench { position: static; } }
.plan h2 { color: var(--ink-2); font: 700 13px var(--mono); letter-spacing: .1em; }
.factor-option input { position: static; opacity: 1; pointer-events: auto; width: 14px; height: 14px; margin-bottom: 7px; }