/* =========================================================================
   GSD Config Manager — documentation site
   Identity: configuration-tool blueprint. Ink surfaces, cyan signal,
   hairline rules, monospaced coordinates, sharp corners.
   No external assets, no framework.
   ========================================================================= */

:root {
  --ink-950: #040a0f;
  --ink-900: #061018;
  --ink-850: #08141c;
  --ink-800: #0a1922;
  --ink-750: #0c1f2a;
  --ink-700: #102833;
  --line: rgba(116, 196, 210, 0.16);
  --line-strong: rgba(116, 212, 226, 0.32);
  --paper: #e7f1f3;
  --paper-soft: #c8d8dc;
  --muted: #8ba4ac;
  --dim: #627d86;
  --cyan: #38dfee;
  --cyan-bright: #7ceef8;
  --cyan-deep: #0b8fa0;
  --cyan-wash: rgba(56, 223, 238, 0.08);
  --cyan-wash-strong: rgba(56, 223, 238, 0.14);
  --amber: #f0b85a;
  --green: #6ee7a8;
  --violet: #b8a6ff;
  --red: #ff8080;
  --grid: rgba(90, 170, 185, 0.07);
  --grid-strong: rgba(90, 190, 205, 0.1);

  --mono: ui-monospace, "SFMono-Regular", "Cascadia Mono", "Segoe UI Mono", Menlo, Consolas, monospace;
  --sans: "Inter", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;

  --wrap: 1200px;
  --gutter: 24px;
  --radius: 2px;
  --header-h: 68px;
}

*,
*::before,
*::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 24px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--ink-950);
  color: var(--paper);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

.grid-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px),
    linear-gradient(var(--grid-strong) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-strong) 1px, transparent 1px);
  background-size: 32px 32px, 32px 32px, 192px 192px, 192px 192px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.9), rgba(0,0,0,.35) 60%, rgba(0,0,0,.7));
}

main, .site-header, .site-footer { position: relative; z-index: 1; }

::selection { background: var(--cyan); color: var(--ink-950); }

a { color: var(--cyan-bright); text-decoration-color: rgba(124, 238, 248, .35); text-underline-offset: 3px; }
a:hover { color: #fff; text-decoration-color: var(--cyan); }

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

img { max-width: 100%; height: auto; display: block; }

code, kbd, pre { font-family: var(--mono); }

code {
  font-size: .88em;
  overflow-wrap: anywhere;
  color: var(--paper);
  background: rgba(56, 223, 238, .07);
  border: 1px solid rgba(56, 223, 238, .12);
  border-radius: var(--radius);
  padding: .08em .34em;
}

pre code { background: none; border: 0; padding: 0; font-size: inherit; overflow-wrap: normal; }

h1, h2, h3, h4 {
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -.02em;
  margin: 0;
}

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute;
  left: 16px; top: -60px;
  z-index: 100;
  background: var(--cyan);
  color: var(--ink-950);
  padding: 10px 16px;
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .08em;
  transition: top .15s;
}
.skip-link:focus { top: 12px; }

.wrap {
  width: 100%;
  max-width: calc(var(--wrap) + var(--gutter) * 2);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.mono-label {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--dim);
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--cyan-bright);
  margin: 0 0 18px;
}
.eyebrow .dot { width: 6px; height: 6px; background: var(--cyan); box-shadow: 0 0 10px var(--cyan); }
.eyebrow .sep { color: var(--dim); }

.accent { color: var(--cyan); }

/* ------------------------------- header ------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(4, 10, 15, .86);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--paper);
  flex-shrink: 0;
}
.brand-mark { width: 30px; height: 30px; color: var(--cyan); display: block; }
.brand-mark svg { width: 100%; height: 100%; }
.brand-type { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .12em;
}
.brand-slash { color: var(--cyan); }
.brand-sub {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: .12em;
  color: var(--dim);
  text-transform: uppercase;
  margin-top: 3px;
}

.site-nav {
  display: flex;
  gap: 4px;
  margin-left: auto;
}
.site-nav a {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 7px;
  padding: 8px 12px;
  color: var(--muted);
  text-decoration: none;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .06em;
  text-transform: uppercase;
  transition: color .15s, background .15s;
}
.site-nav a span { font-size: 9px; color: var(--dim); }
.site-nav a:hover { color: var(--paper); background: rgba(56, 223, 238, .05); }
.site-nav a[aria-current="page"] { color: var(--cyan); }
.site-nav a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 12px; right: 12px; bottom: 2px;
  height: 1px;
  background: var(--cyan);
}
.site-nav a[aria-current="page"] span { color: var(--cyan-deep); }

.header-cta {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--paper);
  text-decoration: none;
  border: 1px solid var(--line-strong);
  padding: 8px 12px;
  margin-left: 8px;
  transition: background .15s, border-color .15s;
}
.header-cta:hover { background: var(--cyan-wash); border-color: var(--cyan); color: #fff; }
.header-cta span { color: var(--cyan); }

/* -------------------------------- hero -------------------------------- */

.hero {
  border-bottom: 1px solid var(--line);
  padding: clamp(64px, 9vw, 120px) 0 clamp(56px, 7vw, 96px);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 55% 60% at 18% 30%, rgba(56, 223, 238, .1), transparent 70%);
  pointer-events: none;
}
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(300px, .75fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: start;
  position: relative;
}
.hero-copy h1 {
  font-size: clamp(2.4rem, 5.6vw, 4.4rem);
  letter-spacing: -.035em;
  margin: 0 0 24px;
}
.hero-copy .lede { max-width: 44ch; }
.hero-copy .lede a { color: var(--paper); }

.lede {
  font-size: clamp(1.02rem, 1.5vw, 1.16rem);
  line-height: 1.7;
  color: var(--paper-soft);
  margin: 0 0 28px;
}

.install {
  display: flex;
  align-items: center;
  gap: 12px;
  border: 1px solid var(--line-strong);
  background: rgba(6, 16, 24, .8);
  padding: 14px 16px;
  max-width: 620px;
  font-family: var(--mono);
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.3);
}
.install::before {
  content: "";
  width: 3px;
  align-self: stretch;
  background: var(--cyan);
  margin: -14px 2px -14px -16px;
}
.install-prompt { color: var(--cyan); font-size: 14px; }
.install code {
  flex: 1;
  background: none;
  border: 0;
  padding: 0;
  font-size: clamp(12px, 1.5vw, 15px);
  color: var(--paper);
  overflow-wrap: anywhere;
}
.copy-btn {
  flex-shrink: 0;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--line);
  padding: 6px 10px;
  cursor: pointer;
  transition: all .15s;
}
.copy-btn:hover { color: var(--ink-950); background: var(--cyan); border-color: var(--cyan); }
.copy-btn.is-copied { color: var(--ink-950); background: var(--green); border-color: var(--green); }
.install-note {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .03em;
  color: var(--dim);
  margin: 10px 0 0;
}
.install-wide { max-width: 100%; margin-top: 18px; }
.install-compact { max-width: 100%; padding: 12px 14px; }

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 30px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 18px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  text-transform: uppercase;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background .15s, color .15s, border-color .15s, transform .15s;
}
.btn-primary { background: var(--cyan); color: var(--ink-950); border-color: var(--cyan); font-weight: 700; }
.btn-primary:hover { background: var(--cyan-bright); color: var(--ink-950); }
.btn-ghost { border-color: var(--line-strong); color: var(--paper); }
.btn-ghost:hover { border-color: var(--cyan); background: var(--cyan-wash); color: #fff; text-decoration: none; }
.btn-small { padding: 8px 12px; font-size: 10px; }

.hero-panel {
  border: 1px solid var(--line-strong);
  background: linear-gradient(180deg, rgba(10, 25, 34, .92), rgba(6, 16, 24, .92));
  position: relative;
}
.hero-panel::before,
.hero-panel::after {
  content: "";
  position: absolute;
  width: 8px; height: 8px;
  border-color: var(--cyan);
  border-style: solid;
  opacity: .7;
}
.hero-panel::before { top: -1px; left: -1px; border-width: 1px 0 0 1px; }
.hero-panel::after { bottom: -1px; right: -1px; border-width: 0 1px 1px 0; }

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--line);
  padding: 13px 16px;
}
.status-led {
  width: 7px; height: 7px;
  background: var(--green);
  box-shadow: 0 0 8px var(--green);
  border-radius: 50%;
}
.readout { margin: 0; padding: 8px 16px; }
.readout > div {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  padding: 11px 0;
  border-bottom: 1px dashed var(--line);
}
.readout > div:last-child { border-bottom: 0; }
.readout dt {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--muted);
}
.readout dd {
  margin: 0;
  font-family: var(--mono);
  font-size: 20px;
  color: var(--cyan-bright);
  line-height: 1;
}
.readout dd.sm { font-size: 12px; color: var(--paper); }
.panel-foot {
  margin: 0;
  padding: 13px 16px;
  border-top: 1px solid var(--line);
  font-size: 11.5px;
  color: var(--dim);
  line-height: 1.5;
}

/* ------------------------------- sections ------------------------------ */

.section { padding-top: clamp(56px, 7vw, 96px); }
.section:last-of-type { padding-bottom: clamp(56px, 7vw, 96px); }

.section-head { margin-bottom: 32px; max-width: 820px; }
.section-head h2 {
  font-size: clamp(1.7rem, 3.4vw, 2.5rem);
  letter-spacing: -.03em;
}
.section-head.split {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(240px, .6fr);
  gap: 32px;
  align-items: end;
  max-width: none;
}
.section-aside {
  font-size: 14px;
  color: var(--muted);
  margin: 0;
  padding-left: 18px;
  border-left: 1px solid var(--line-strong);
}

.grid-2, .grid-3 { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.grid-2 > *, .grid-3 > * { min-width: 0; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.card, .feature {
  background: var(--ink-900);
  padding: 28px;
  position: relative;
  transition: background .2s;
}
.card:hover, .feature:hover { background: var(--ink-850); }

.card h3, .feature h3 {
  font-size: 1.06rem;
  margin: 0 0 10px;
  letter-spacing: -.01em;
}
.card p, .feature p { color: var(--muted); font-size: 14.5px; margin: 0; }
.card code, .feature code { color: var(--cyan-bright); }

.card-index {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--cyan);
  letter-spacing: .12em;
  margin-bottom: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px; height: 22px;
  border: 1px solid var(--line-strong);
}
.card-index::after { content: ""; }

.feature-num {
  display: block;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .14em;
  color: var(--cyan-deep);
  margin-bottom: 26px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}
.feature:hover .feature-num { color: var(--cyan); }

/* safety list */
.safety-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}
.safety-list li {
  display: grid;
  grid-template-columns: 80px minmax(0, 1fr);
  gap: 24px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
  align-items: start;
}
.safety-num {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--cyan);
  padding-top: 4px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.safety-num::after { content: ""; flex: 1; height: 1px; background: var(--line-strong); }
.safety-list h3 { font-size: 1.05rem; margin-bottom: 6px; }
.safety-list p { color: var(--muted); font-size: 14.5px; max-width: 76ch; margin: 0; }
.section-link { margin-top: 24px; font-family: var(--mono); font-size: 12px; letter-spacing: .04em; }

/* schema teaser */
.schema-teaser {
  display: grid;
  grid-template-columns: 1.5fr .8fr;
  border: 1px solid var(--line);
  background: var(--ink-900);
}
.teaser-cats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-right: 1px solid var(--line);
}
.teaser-cats a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  padding: 15px 16px;
  border-bottom: 1px solid var(--line);
  border-right: 1px solid var(--line);
  color: var(--paper-soft);
  text-decoration: none;
  font-size: 13px;
  transition: background .15s, color .15s;
}
.teaser-cats a:nth-child(3n) { border-right: 0; }
.teaser-cats a:hover { background: var(--cyan-wash); color: #fff; }
.cat-count { font-family: var(--mono); font-size: 10px; color: var(--dim); }
.teaser-cats a:hover .cat-count { color: var(--cyan); }
.teaser-more {
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 24px;
}
.teaser-more p { font-size: 14px; color: var(--muted); }
.teaser-more strong { color: var(--paper); }
.teaser-more .btn { align-self: flex-start; }

/* screenshots */
.shot-frame {
  margin: 0;
  border: 1px solid var(--line-strong);
  background: var(--ink-900);
  overflow: hidden;
}
.shot-chrome {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  background: var(--ink-850);
}
.shot-chrome > span:not(.shot-url) {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--line-strong);
}
.shot-url {
  margin-left: 8px;
  font-family: var(--mono);
  font-size: 9.5px;
  color: var(--dim);
  letter-spacing: .04em;
}
.shot-frame img { width: 100%; border-bottom: 1px solid var(--line); }
.shot-frame figcaption {
  padding: 12px 16px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--dim);
}
.shot-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 16px;
}

/* CTA */
.cta-section { padding-bottom: clamp(56px, 7vw, 96px); }
.cta-box {
  border: 1px solid var(--line-strong);
  background:
    linear-gradient(135deg, rgba(56, 223, 238, .09), transparent 45%),
    var(--ink-900);
  padding: clamp(28px, 5vw, 56px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, .8fr);
  gap: 40px;
  align-items: center;
  position: relative;
}
.cta-box::before {
  content: "";
  position: absolute;
  top: -1px; left: 40px;
  width: 80px; height: 2px;
  background: var(--cyan);
}
.cta-box h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); margin-bottom: 12px; }
.cta-box p { color: var(--muted); }
.cta-actions { display: flex; flex-direction: column; gap: 12px; align-items: stretch; }
.cta-actions .btn { justify-content: center; }

/* ------------------------------ page heads ----------------------------- */

.page-head {
  padding: clamp(48px, 6vw, 80px) 0 40px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(56, 223, 238, .04), transparent);
}
.page-head h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); letter-spacing: -.035em; margin-bottom: 18px; }
.page-head-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(260px, .5fr);
  gap: 48px;
  align-items: end;
}
.page-head .lede { margin-bottom: 0; max-width: 62ch; }
.page-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin: 0;
}
.page-stats > div { background: var(--ink-900); padding: 14px 16px; }
.page-stats dt {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--dim);
  margin-bottom: 4px;
}
.page-stats dd {
  margin: 0;
  font-family: var(--mono);
  font-size: 22px;
  color: var(--cyan-bright);
  line-height: 1.2;
}
.page-stats dd.sm { font-size: 11px; color: var(--paper); }
.source-note {
  margin: 28px 0 0;
  padding: 13px 16px;
  border-left: 2px solid var(--cyan-deep);
  background: rgba(56, 223, 238, .04);
  font-size: 12.5px;
  color: var(--muted);
  max-width: 900px;
}
.source-note .mono-label { margin-right: 10px; color: var(--cyan); }

/* ------------------------------ explorer ------------------------------- */

.explorer { padding-top: 32px; }
.explorer-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: flex-end;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: var(--header-h);
  z-index: 20;
  background: rgba(4, 10, 15, .92);
  backdrop-filter: blur(12px);
}
.search-field {
  flex: 1 1 360px;
  display: flex;
  align-items: center;
  gap: 12px;
  border: 1px solid var(--line-strong);
  background: var(--ink-900);
  padding: 0 14px;
  min-height: 48px;
  position: relative;
}
.search-field:focus-within { border-color: var(--cyan); box-shadow: 0 0 0 1px var(--cyan-wash-strong); }
.search-field .mono-label { color: var(--cyan); flex-shrink: 0; }
.search-field input {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: 0;
  color: var(--paper);
  font-family: var(--mono);
  font-size: 13px;
  padding: 12px 0;
  outline: none;
}
.search-field input::placeholder { color: var(--dim); }
.search-field kbd {
  border: 1px solid var(--line);
  color: var(--dim);
  font-size: 10px;
  padding: 2px 6px;
  line-height: 1;
}
.explorer-controls { display: flex; gap: 12px; align-items: flex-end; flex-wrap: wrap; }
.select-field { display: flex; flex-direction: column; gap: 5px; }
.select-field select {
  appearance: none;
  background: var(--ink-900)
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%2338dfee'/%3E%3C/svg%3E")
    no-repeat right 12px center;
  border: 1px solid var(--line-strong);
  color: var(--paper);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .04em;
  padding: 12px 34px 12px 12px;
  min-width: 150px;
  height: 48px;
  cursor: pointer;
}
.select-field select:hover { border-color: var(--cyan); }

.explorer-layout {
  display: grid;
  grid-template-columns: minmax(0, 250px) minmax(0, 1fr);
  gap: 32px;
  padding-top: 28px;
  align-items: start;
}
.filter-rail {
  min-width: 0;
  position: sticky;
  top: calc(var(--header-h) + 96px);
  border: 1px solid var(--line);
  background: var(--ink-900);
  max-height: calc(100vh - var(--header-h) - 120px);
  overflow: auto;
}
.rail-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 13px 14px;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  background: var(--ink-900);
  z-index: 1;
}
.count-badge {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-950);
  background: var(--cyan);
  padding: 2px 7px;
}
.cat-filter { display: flex; flex-direction: column; padding: 6px; }
.cat-chip {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  width: 100%;
  text-align: left;
  background: transparent;
  border: 1px solid transparent;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .02em;
  padding: 7px 8px;
  cursor: pointer;
  transition: all .12s;
}
.cat-chip span { color: var(--dim); font-size: 9.5px; }
.cat-chip:hover { color: var(--paper); background: rgba(56, 223, 238, .05); }
.cat-chip.is-active {
  color: var(--cyan-bright);
  background: var(--cyan-wash);
  border-color: var(--line-strong);
}
.cat-chip.is-active span { color: var(--cyan); }

.key-results { min-width: 0; }
.results-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 4px;
}
.results-count { margin: 0; font-family: var(--mono); font-size: 12px; color: var(--muted); }
.results-count strong { color: var(--cyan); font-size: 18px; }
.results-hint { margin: 0; font-size: 11.5px; color: var(--dim); }

.key-list { border-bottom: 1px solid var(--line); }
.key-card {
  scroll-margin-top: 150px;
  border-top: 1px solid var(--line);
  padding: 22px 4px 22px 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  transition: background .15s;
}
.key-card:hover { background: rgba(56, 223, 238, .025); }
.key-card[hidden] { display: none; }
.key-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 8px;
}
.key-path { font-size: 15px; font-weight: 600; margin: 0; }
.key-path a { text-decoration: none; color: var(--cyan-bright); }
.key-path a:hover { color: #fff; text-decoration: underline; }
.key-path code {
  background: none;
  border: 0;
  padding: 0;
  font-size: 14.5px;
  color: inherit;
}
.type-badge {
  flex-shrink: 0;
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--muted);
  border: 1px solid var(--line);
  padding: 3px 8px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.type-badge::before {
  content: "";
  width: 5px; height: 5px;
  background: var(--dim);
}
.type-string::before { background: var(--cyan); }
.type-number::before { background: var(--amber); }
.type-boolean::before { background: var(--green); }
.type-object::before { background: var(--violet); }
.type-array::before { background: #7fb2ff; }
.type-nullable::before { background: var(--dim); border: 1px solid var(--muted); background: transparent; }

.key-desc {
  font-size: 13.5px;
  color: var(--muted);
  line-height: 1.65;
  max-width: 88ch;
  margin: 0 0 12px;
}
.key-desc code { color: var(--paper-soft); }
.key-facts { display: flex; flex-wrap: wrap; gap: 8px 18px; align-items: center; min-width: 0; }
.fact {
  max-width: 100%;
  flex-wrap: wrap;
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--paper-soft);
}
.fact code { font-size: 10.5px; color: var(--cyan-bright); background: none; border: 0; padding: 0; }
.fact-label { font-size: 8.5px; letter-spacing: .12em; color: var(--dim); }
.fact em { font-style: normal; color: var(--muted); }
.fact-enum .fact-label { color: var(--amber); }
.fact-lock .fact-label, .fact-lock { color: var(--amber); }
.fact-cat {
  margin-left: auto;
  color: var(--dim);
  font-size: 10px;
  letter-spacing: .04em;
}
.key-details { margin-top: 10px; border-top: 1px dashed var(--line); }
.key-details summary {
  cursor: pointer;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--dim);
  padding: 10px 0 0;
  list-style-position: inside;
}
.key-details summary:hover { color: var(--cyan); }
.key-details[open] summary { color: var(--cyan); }
.values-table {
  width: 100%;
  border-collapse: collapse;
  margin: 14px 0 0;
  font-size: 13px;
}
.values-table th, .values-table td {
  text-align: left;
  vertical-align: top;
  padding: 9px 12px;
  border: 1px solid var(--line);
}
.values-table thead th {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--dim);
  background: rgba(56, 223, 238, .03);
}
.values-table tbody th { font-weight: 500; white-space: nowrap; width: 22%; }
.values-table tbody th code { color: var(--cyan-bright); background: none; border: 0; padding: 0; font-size: 12px; }
.values-table tbody td { color: var(--muted); }
.values-table tbody tr:hover td, .values-table tbody tr:hover th { background: rgba(56, 223, 238, .03); }
.default-note {
  font-size: 12.5px;
  color: var(--muted);
  background: rgba(56, 223, 238, .04);
  border-left: 2px solid var(--line-strong);
  padding: 10px 14px;
  margin: 14px 0 0;
}
.empty-results {
  border: 1px dashed var(--line-strong);
  padding: 32px;
  text-align: center;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12px;
}
.link-btn {
  background: none;
  border: 0;
  color: var(--cyan);
  font: inherit;
  text-decoration: underline;
  cursor: pointer;
  padding: 0;
}
.noscript-note { margin-top: 24px; font-size: 12px; color: var(--muted); }

/* ------------------------------- terminal ------------------------------ */

.terminal {
  border: 1px solid var(--line-strong);
  background: var(--ink-950);
  margin-bottom: 16px;
}
.terminal-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 12px;
  background: var(--ink-850);
  border-bottom: 1px solid var(--line);
}
.terminal-bar > span:not(.terminal-title) {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--line-strong);
}
.terminal-title {
  margin-left: 8px;
  font-family: var(--mono);
  font-size: 9.5px;
  color: var(--dim);
  letter-spacing: .08em;
  text-transform: uppercase;
}
.terminal pre {
  margin: 0;
  padding: 22px;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.7;
  color: var(--paper-soft);
}
.t-cyan { color: var(--cyan); }
.t-dim { color: var(--dim); }

/* -------------------------------- tables ------------------------------- */

.table-wrap {
  border: 1px solid var(--line);
  overflow-x: auto;
  background: var(--ink-900);
}
.ref-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
  min-width: 640px;
}
.ref-table th, .ref-table td {
  text-align: left;
  vertical-align: top;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
}
.ref-table thead th {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--dim);
  background: var(--ink-850);
  border-bottom: 1px solid var(--line-strong);
}
.ref-table tbody th { font-weight: 500; color: var(--paper); width: 30%; }
.ref-table tbody th code { color: var(--cyan-bright); }
.ref-table tbody td { color: var(--muted); }
.ref-table tbody tr:last-child th, .ref-table tbody tr:last-child td { border-bottom: 0; }
.ref-table tbody tr:hover { background: rgba(56, 223, 238, .025); }

.mini-table { width: 100%; border-collapse: collapse; margin-top: 16px; font-size: 13px; }
.mini-table th, .mini-table td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); }
.mini-table th { width: 60px; }

.callout {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 20px;
  align-items: baseline;
  border: 1px solid var(--line);
  border-left: 2px solid var(--cyan-deep);
  background: rgba(56, 223, 238, .035);
  padding: 16px 18px;
  margin-top: 18px;
}
.callout p { margin: 0; font-size: 13.5px; color: var(--muted); }
.callout .mono-label { color: var(--cyan); }
.callout-wide { max-width: 100%; }

.path-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-top: 0;
}
.path-grid > div { background: var(--ink-900); padding: 14px 16px; display: flex; flex-direction: column; gap: 6px; }
.path-grid code { font-size: 11px; overflow-wrap: anywhere; }

.steps { margin: 0; padding-left: 18px; color: var(--muted); font-size: 14px; }
.steps li { margin-bottom: 8px; }
.steps li::marker { color: var(--cyan); font-family: var(--mono); font-size: 11px; }

.code-card pre {
  margin: 0 0 14px;
  padding: 14px;
  background: var(--ink-950);
  border: 1px solid var(--line);
  overflow-x: auto;
  font-size: 11.5px;
  line-height: 1.7;
  color: var(--paper-soft);
}
.code-card h3 { margin-bottom: 12px; }
.code-card p { font-size: 13px; }

/* ------------------------------- pipeline ------------------------------ */

.pipeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.pipeline li {
  background: var(--ink-900);
  padding: 24px 20px;
  position: relative;
}
.pipeline li::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 2px;
  background: linear-gradient(90deg, var(--cyan), transparent 70%);
  opacity: .55;
}
.pipeline-step {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: .14em;
  color: var(--cyan);
  display: block;
  margin-bottom: 18px;
}
.pipeline h3 { font-size: .98rem; margin-bottom: 8px; }
.pipeline p { font-size: 13px; color: var(--muted); margin: 0; }

.snapshot-diagram {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: center;
  gap: 12px;
  margin-top: 24px;
  padding: 28px;
  border: 1px solid var(--line);
  background: var(--ink-900);
}
.snap-node {
  border: 1px solid var(--line-strong);
  background: var(--ink-950);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}
.snap-node-accent { border-color: var(--cyan); background: var(--cyan-wash); }
.snap-label { font-family: var(--mono); font-size: 9px; letter-spacing: .12em; color: var(--dim); }
.snap-node-accent .snap-label { color: var(--cyan); }
.snap-node code { background: none; border: 0; padding: 0; font-size: 12px; color: var(--paper); overflow-wrap: anywhere; }
.snap-arrow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  font-family: var(--mono);
  font-size: 9px;
  color: var(--dim);
  letter-spacing: .06em;
  text-transform: uppercase;
}
.snap-arrow span:last-child { color: var(--cyan); font-size: 16px; }

.two-col-text {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  font-size: 14.5px;
  color: var(--muted);
}
.two-col-text p { margin-top: 0; }
.two-col-text strong { color: var(--paper); }

.bullets { margin: 14px 0 0; padding-left: 18px; color: var(--muted); font-size: 14px; }
.bullets li { margin-bottom: 8px; }
.bullets li::marker { color: var(--cyan); }
.bullets-grid {
  columns: 2;
  column-gap: 48px;
  padding-left: 18px;
  margin: 0;
  list-style-position: outside;
}
.bullets-grid li { break-inside: avoid; margin-bottom: 16px; font-size: 14px; }
.bullets strong { color: var(--paper); }

/* --------------------------------- FAQ --------------------------------- */

.faq-list { max-width: 980px; }
.faq-item {
  border-bottom: 1px solid var(--line);
}
.faq-item:first-child { border-top: 1px solid var(--line); }
.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 22px 44px 22px 0;
  font-size: 1.02rem;
  font-weight: 500;
  color: var(--paper);
  position: relative;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 8px; top: 50%;
  transform: translateY(-50%);
  font-family: var(--mono);
  font-size: 18px;
  color: var(--cyan);
  font-weight: 400;
}
.faq-item[open] summary::after { content: "−"; }
.faq-item summary:hover { color: var(--cyan-bright); }
.faq-item > div { padding: 0 44px 24px 0; color: var(--muted); font-size: 14.5px; max-width: 80ch; }

/* -------------------------------- 404 ---------------------------------- */

.error-page { padding: clamp(64px, 10vw, 140px) 0; }
.error-grid {
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 48px;
  align-items: center;
}
.error-page h1 { font-size: clamp(2.6rem, 7vw, 5rem); margin-bottom: 20px; }
.error-panel {
  border: 1px solid var(--line-strong);
  background: var(--ink-900);
  padding: 24px;
  position: relative;
  overflow: hidden;
}
.error-code {
  font-family: var(--mono);
  font-size: clamp(4rem, 10vw, 7rem);
  line-height: 1;
  color: rgba(56, 223, 238, .12);
  position: absolute;
  right: 12px; top: 0;
  letter-spacing: -.06em;
}
.error-panel pre { margin: 0; position: relative; font-size: 12px; color: var(--muted); line-height: 1.8; }

.text-link {
  display: inline-block;
  margin-top: 14px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .04em;
  text-transform: uppercase;
}

/* -------------------------------- footer ------------------------------- */

.site-footer {
  border-top: 1px solid var(--line);
  background: var(--ink-950);
  padding: 48px 0 24px;
  margin-top: 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
}
.footer-brand p { color: var(--muted); font-size: 13px; margin: 10px 0 0; max-width: 34ch; }
.footer-fine { font-family: var(--mono); font-size: 10px !important; color: var(--dim) !important; letter-spacing: .04em; }
.footer-col { display: flex; flex-direction: column; gap: 9px; }
.footer-col a { color: var(--muted); font-size: 13px; text-decoration: none; }
.footer-col a:hover { color: var(--cyan); }
.footer-meta span:not(.mono-label) { font-family: var(--mono); font-size: 10.5px; color: var(--dim); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 40px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}
.footer-bottom .mono-label { font-size: 9px; }

/* ------------------------------ responsive ----------------------------- */

@media (max-width: 1080px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-panel { max-width: 520px; }
  .pipeline { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .bullets-grid { columns: 1; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 960px) {
  :root { --gutter: 20px; }
  .site-nav { overflow-x: auto; scrollbar-width: none; }
  .site-nav::-webkit-scrollbar { display: none; }
  .site-nav a { white-space: nowrap; }
  .brand-sub { display: none; }
  .header-cta { display: none; }
  .section-head.split { grid-template-columns: 1fr; align-items: start; }
  .section-aside { padding-left: 0; border-left: 0; border-top: 1px solid var(--line); padding-top: 14px; }
  .page-head-grid { grid-template-columns: 1fr; gap: 28px; align-items: start; }
  .page-stats { max-width: 460px; }
  .explorer-layout { grid-template-columns: 1fr; gap: 20px; }
  .filter-rail {
    position: static;
    width: 100%;
    max-height: none;
    overflow: hidden;
  }
  .cat-filter {
    width: 100%;
    max-width: 100%;
    flex-direction: row;
    flex-wrap: nowrap;
    overflow-x: auto;
    padding: 10px;
    gap: 6px;
    scrollbar-width: thin;
  }
  .cat-chip { width: auto; white-space: nowrap; border: 1px solid var(--line); padding: 6px 10px; }
  .rail-head { display: none; }
  .teaser-cats { grid-template-columns: 1fr 1fr; border-right: 0; border-bottom: 1px solid var(--line); }
  .teaser-cats a:nth-child(3n) { border-right: 1px solid var(--line); }
  .teaser-cats a:nth-child(2n) { border-right: 0; }
  .schema-teaser { grid-template-columns: 1fr; }
  .cta-box { grid-template-columns: 1fr; gap: 28px; }
  .error-grid { grid-template-columns: 1fr; }
  .two-col-text { grid-template-columns: 1fr; gap: 12px; }
  .snapshot-diagram { grid-template-columns: 1fr; }
  .snap-arrow { flex-direction: row; gap: 8px; }
  .snap-arrow span:last-child { transform: rotate(90deg); }
  .callout { grid-template-columns: 1fr; gap: 8px; }
  .results-hint { display: none; }
  .shot-row { grid-template-columns: 1fr; }
  .path-grid { grid-template-columns: 1fr; }
}

@media (min-width: 961px) {
  .key-card { scroll-margin-top: 190px; }
}

@media (max-width: 680px) {
  :root { --gutter: 16px; --header-h: 60px; }
  body { font-size: 15px; }
  .header-inner { gap: 12px; }
  .brand-mark { width: 24px; height: 24px; }
  .brand-name { font-size: 11px; letter-spacing: .08em; }
  .site-nav { gap: 0; }
  .site-nav a { padding: 8px 8px; font-size: 10px; }
  .site-nav a span { display: none; }
  .hero { padding-top: 44px; }
  .hero-copy h1 { font-size: clamp(2.1rem, 9.5vw, 3rem); }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .safety-list li { grid-template-columns: 1fr; gap: 6px; padding: 20px 0; }
  .safety-num::after { display: none; }
  .teaser-cats { grid-template-columns: 1fr; }
  .teaser-cats a { border-right: 0 !important; }
  .install { flex-wrap: wrap; }
  .copy-btn { margin-left: auto; }
  .explorer-bar { position: static; padding-bottom: 16px; }
  .explorer-controls { width: 100%; }
  .select-field { flex: 1 1 140px; }
  .select-field select { width: 100%; min-width: 0; }
  .key-line { align-items: flex-start; }
  .key-path code { font-size: 12.5px; }
  .fact-cat { margin-left: 0; }
  .key-card { padding-right: 0; }
  .values-table th, .values-table td { padding: 8px; font-size: 12px; }
  .values-table tbody th { width: auto; }
  .pipeline { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; gap: 6px; }
  .terminal pre { font-size: 11.5px; }
  .section-head h2 { font-size: 1.6rem; }
  .page-head h1 { font-size: 2.1rem; }
  .faq-item summary { font-size: .96rem; padding-right: 34px; }
  .faq-item > div { padding-right: 0; }
  .error-panel { padding: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
}

@media print {
  .site-header, .site-footer, .grid-overlay, .explorer-bar, .filter-rail, .hero-panel { display: none !important; }
  body { background: #fff; color: #111; }
  .key-card { break-inside: avoid; }
  a { color: #0b6c78; }
}