/* Zycord website stylesheet.
   Graphite glass: neutral translucent panels, one-pixel light edges, an inner
   top highlight, and a blurred backdrop. A single muted teal is reserved for
   state and interaction. No purple, no gradients on text, no pill shapes. */

/* ------------------------------------------------------------------ tokens */
:root {
  color-scheme: dark;

  --ink:        #e9e9ec;
  --ink-2:      #b4b4bb;
  --ink-3:      #85858e;
  --bg:         #0c0c0e;
  --bg-2:       #111114;

  --glass:      rgba(255, 255, 255, .042);
  --glass-2:    rgba(255, 255, 255, .065);
  --glass-3:    rgba(255, 255, 255, .09);
  --edge:       rgba(255, 255, 255, .085);
  --edge-2:     rgba(255, 255, 255, .145);
  --edge-soft:  rgba(255, 255, 255, .055);

  --accent:     #3f9d8a;
  --accent-2:   #57b8a2;
  --accent-ink: #04120e;

  --r-btn:  10px;
  --r-sm:   12px;
  --r:      16px;
  --r-lg:   18px;
  --r-xl:   22px;

  --blur:   22px;
  --wrap:   1120px;
  --head:   64px;

  --shadow:    0 28px 64px -38px rgba(0, 0, 0, .95);
  --shadow-sm: 0 14px 34px -22px rgba(0, 0, 0, .85);
  --highlight: inset 0 1px 0 rgba(255, 255, 255, .085);

  --ease: cubic-bezier(.22, .68, .32, 1);
  --font: "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-display: "Segoe UI Variable Display", "Segoe UI Semibold", "Segoe UI", system-ui, sans-serif;
  --mono: "Cascadia Mono", "Consolas", "Courier New", ui-monospace, monospace;
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--head) + 18px);
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font: 400 16px/1.68 var(--font);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* A fixed graphite wash. Neutral only: no colour cast. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background:
    radial-gradient(58vw 46vw at 12% -6%, rgba(255, 255, 255, .07), transparent 62%),
    radial-gradient(44vw 38vw at 92% 4%, rgba(255, 255, 255, .04), transparent 64%),
    radial-gradient(60vw 46vw at 50% 108%, rgba(255, 255, 255, .028), transparent 66%),
    linear-gradient(180deg, var(--bg-2), var(--bg));
}

/* A very fine grain, drawn with CSS only. */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: .18;
  background-image: radial-gradient(rgba(255, 255, 255, .10) 1px, transparent 1px);
  background-size: 3px 3px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .7), rgba(0, 0, 0, .15));
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .7), rgba(0, 0, 0, .15));
}

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

/* -------------------------------------------------------------- primitives */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 26px;
}

a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: rgba(63, 157, 138, .5);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color 160ms var(--ease), text-decoration-color 160ms var(--ease);
}
a:hover {
  color: var(--accent-2);
  text-decoration-color: var(--accent-2);
}

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

h1, h2, h3, h4 {
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -.02em;
}

p { margin: 0 0 14px; }
p:last-child { margin-bottom: 0; }

.mono { font-family: var(--mono); }
.muted { color: var(--ink-3); }
.lead { color: var(--ink-2); font-size: 17px; }

hr {
  border: 0;
  border-top: 1px solid var(--edge-soft);
  margin: 30px 0;
}

.skip {
  position: absolute;
  left: 16px;
  top: -200px;
  z-index: 200;
}
.skip:focus {
  left: 16px;
  top: 16px;
  padding: 10px 16px;
  border-radius: var(--r-btn);
  background: var(--ink);
  color: var(--bg);
  font-weight: 600;
  text-decoration: none;
}

:focus-visible {
  outline: 2px solid var(--accent-2);
  outline-offset: 3px;
  border-radius: 4px;
}

/* One recipe for every glass surface. */
.glass,
.card,
.step,
.spec,
.notice,
pre.code,
.stat,
.shot,
.road,
.doc,
.cta,
.panel {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, .05), rgba(255, 255, 255, .016));
  border: 1px solid var(--edge);
  box-shadow: var(--highlight), var(--shadow-sm);
  -webkit-backdrop-filter: blur(var(--blur)) saturate(115%);
  backdrop-filter: blur(var(--blur)) saturate(115%);
}

/* ------------------------------------------------------------------ header */
.site-head {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(12, 12, 14, .72);
  border-bottom: 1px solid var(--edge-soft);
  -webkit-backdrop-filter: blur(20px) saturate(120%);
  backdrop-filter: blur(20px) saturate(120%);
}

.site-head .wrap {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: var(--head);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: none;
  color: var(--ink);
  text-decoration: none;
}
.logo:hover { color: var(--ink); }
.logo img {
  width: 30px;
  height: 30px;
  border-radius: 9px;
  box-shadow: 0 6px 16px -9px rgba(0, 0, 0, .9);
}
.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.logo-name {
  font: 600 16px/1.1 var(--font-display);
  letter-spacing: -.2px;
}
.logo-by {
  color: var(--ink-3);
  font-size: 10px;
  letter-spacing: .9px;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1px;
  margin-left: auto;
}

.site-nav a {
  position: relative;
  padding: 7px 9px;
  border: 1px solid transparent;
  border-radius: 8px;
  color: var(--ink-2);
  font-size: 12.5px;
  text-decoration: none;
  white-space: nowrap;
  transition: background 160ms var(--ease), color 160ms var(--ease),
              border-color 160ms var(--ease);
}
.site-nav a:hover {
  color: var(--ink);
  background: var(--glass);
  border-color: var(--edge-soft);
}
.site-nav a.is-active {
  color: var(--ink);
  background: var(--glass-2);
  border-color: var(--edge);
  box-shadow: var(--highlight);
}
.site-nav a.is-active::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 2px;
  width: 4px;
  height: 4px;
  margin-left: -2px;
  border-radius: 50%;
  background: var(--accent-2);
}

.nav-toggle {
  display: none;
  margin-left: auto;
  padding: 8px 13px;
  border: 1px solid var(--edge-2);
  border-radius: var(--r-btn);
  background: var(--glass-2);
  color: var(--ink-2);
  font: 500 13px/1 var(--font);
  cursor: pointer;
}
.nav-toggle:hover { color: var(--ink); background: var(--glass-3); }

/* -------------------------------------------------------------------- hero */
.hero { padding: 76px 0 58px; }

.hero .wrap {
  display: grid;
  grid-template-columns: 1.12fr .88fr;
  gap: 48px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 16px;
  padding: 5px 11px;
  border: 1px solid var(--edge);
  border-radius: 7px;
  background: var(--glass);
  color: var(--ink-2);
  font-size: 11px;
  letter-spacing: .9px;
  text-transform: uppercase;
}
.eyebrow::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent-2);
}

.hero h1 {
  margin: 0 0 16px;
  font: 600 clamp(34px, 4.4vw, 52px)/1.06 var(--font-display);
  letter-spacing: -.035em;
  color: var(--ink);
}

.hero-lede {
  margin: 0 0 26px;
  max-width: 58ch;
  color: var(--ink-2);
  font-size: 17px;
}

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

.hero-note {
  margin: 16px 0 0;
  color: var(--ink-3);
  font-size: 12.5px;
}

.hero-visual {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 320px;
}

.hero-mark {
  position: relative;
  z-index: 1;
  width: min(100%, 292px);
  height: auto;
  border-radius: 22px;
  box-shadow: 0 34px 70px -34px rgba(0, 0, 0, .95);
}

.hero-orbit {
  position: absolute;
  width: min(100%, 360px);
  aspect-ratio: 1;
  border-radius: 50%;
  border: 1px solid var(--edge-soft);
  pointer-events: none;
}
.hero-orbit::before,
.hero-orbit::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--edge-soft);
}
.hero-orbit::before { inset: 10%; }
.hero-orbit::after { inset: 21%; border-color: rgba(255, 255, 255, .04); }

/* ---------------------------------------------------------------- buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 18px;
  border: 1px solid transparent;
  border-radius: var(--r-btn);
  font: 550 14px/1.2 var(--font);
  text-decoration: none;
  cursor: pointer;
  transition: background 160ms var(--ease), border-color 160ms var(--ease),
              color 160ms var(--ease), transform 160ms var(--ease);
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--bg);
  font-weight: 650;
  box-shadow: 0 12px 28px -16px rgba(0, 0, 0, .95), var(--highlight);
}
.btn-primary:hover { background: #ffffff; border-color: #ffffff; color: var(--bg); }

.btn-secondary {
  background: var(--glass-2);
  border-color: var(--edge-2);
  color: var(--ink);
  box-shadow: var(--highlight);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}
.btn-secondary:hover { background: var(--glass-3); border-color: rgba(255, 255, 255, .24); color: var(--ink); }

.btn-ghost {
  background: transparent;
  border-color: transparent;
  color: var(--ink-2);
}
.btn-ghost:hover { background: var(--glass); border-color: var(--edge-soft); color: var(--ink); }

.btn-small { padding: 8px 13px; font-size: 13px; }

.btn[aria-disabled="true"],
.btn:disabled {
  opacity: .45;
  pointer-events: none;
}

/* ---------------------------------------------------------------- sections */
.section { padding: 56px 0; }
.section-tight { padding: 34px 0; }

.page-head { padding: 54px 0 10px; }
.page-head h1 {
  margin: 0 0 10px;
  font: 600 clamp(30px, 3.6vw, 42px)/1.1 var(--font-display);
  letter-spacing: -.035em;
}
.page-head .lead { max-width: 68ch; }

.section-head {
  max-width: 72ch;
  margin-bottom: 28px;
}
.section-head h2 {
  margin: 0 0 8px;
  font: 600 clamp(23px, 2.5vw, 30px)/1.16 var(--font-display);
  letter-spacing: -.025em;
}
.section-head p {
  margin: 0;
  color: var(--ink-3);
  font-size: 15px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 14px;
}
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }

.card {
  border-radius: var(--r-lg);
  padding: 20px;
  transition: border-color 180ms var(--ease), transform 180ms var(--ease);
}
.card:hover { border-color: var(--edge-2); transform: translateY(-2px); }
.card h3 {
  margin: 0 0 6px;
  font: 600 15px/1.35 var(--font-display);
  letter-spacing: -.01em;
}
.card p {
  margin: 0;
  color: var(--ink-2);
  font-size: 13.5px;
  line-height: 1.62;
}
.card-kicker {
  display: block;
  margin-bottom: 10px;
  color: var(--ink-3);
  font: 500 10.5px/1 var(--mono);
  letter-spacing: 1.3px;
  text-transform: uppercase;
}

/* ------------------------------------------------------------------- stats */
.stat-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
}
.stat { border-radius: var(--r); padding: 16px 18px; }
.stat-n {
  display: block;
  color: var(--ink);
  font: 600 26px/1.1 var(--font-display);
  letter-spacing: -.03em;
  font-variant-numeric: tabular-nums;
}
.stat-l {
  display: block;
  margin-top: 4px;
  color: var(--ink-3);
  font-size: 12px;
  letter-spacing: .2px;
}

/* ------------------------------------------------------------------- steps */
.steps { display: grid; gap: 10px; }

.step {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 16px;
  align-items: start;
  border-radius: var(--r-lg);
  padding: 18px 20px;
}
.step-n {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--edge);
  border-radius: 9px;
  background: var(--glass-2);
  color: var(--ink-2);
  font: 600 14px/1 var(--mono);
  box-shadow: var(--highlight);
}
.step h3 {
  margin: 1px 0 4px;
  font: 600 15px/1.3 var(--font-display);
}
.step p {
  margin: 0;
  max-width: 74ch;
  color: var(--ink-2);
  font-size: 13.5px;
}

/* ------------------------------------------------------------- screenshots */
.shots {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 16px;
}
.shot {
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
}
.shot img {
  width: 100%;
  height: auto;
  background: #08080a;
  border-top: 1px solid var(--edge-soft);
}
.shot figcaption {
  padding: 11px 15px;
  border-top: 1px solid var(--edge-soft);
  color: var(--ink-3);
  font-size: 12.5px;
}
.shot-wide { grid-column: 1 / -1; }

.shot-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
}
.shot-bar i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .16);
}
.shot-bar span {
  margin-left: auto;
  color: var(--ink-3);
  font: 500 11px/1 var(--mono);
}

/* ------------------------------------------------------------------- split */
.split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  align-items: start;
}

/* ----------------------------------------------------------------- roadmap */
.road { border-radius: var(--r-lg); padding: 6px 20px; }

.road-item {
  display: grid;
  grid-template-columns: 14px 1fr auto;
  gap: 14px;
  align-items: baseline;
  padding: 15px 0;
  border-bottom: 1px solid var(--edge-soft);
}
.road-item:last-child { border-bottom: 0; }

.road-dot {
  width: 8px;
  height: 8px;
  margin-top: 6px;
  border-radius: 50%;
  background: var(--ink-3);
}
.road-dot.is-shipped { background: var(--accent-2); }
.road-dot.is-next { background: var(--ink-2); }
.road-dot.is-later { background: transparent; border: 1px solid var(--ink-3); }

.road-item h3 {
  margin: 0 0 2px;
  font: 600 14px/1.35 var(--font-display);
}
.road-item p {
  margin: 0;
  color: var(--ink-2);
  font-size: 13px;
}
.road-when {
  color: var(--ink-3);
  font: 500 11px/1 var(--mono);
  white-space: nowrap;
}

/* ------------------------------------------------------------------ notice */
.notice {
  border-left: 2px solid var(--accent);
  border-radius: var(--r);
  padding: 15px 18px;
  color: var(--ink-2);
  font-size: 14px;
}
.notice strong { color: var(--ink); font-weight: 600; }
.notice a { color: var(--ink); }
.notice a:hover { color: var(--accent-2); }
.notice-warn { border-left-color: var(--ink-3); }
.notice-title {
  display: block;
  margin-bottom: 5px;
  color: var(--ink);
  font-weight: 600;
}

/* -------------------------------------------------------------------- code */
pre.code {
  margin: 0;
  padding: 15px 17px;
  border-radius: var(--r-sm);
  overflow-x: auto;
  color: var(--ink-2);
  font: 400 12.5px/1.65 var(--mono);
  background: rgba(0, 0, 0, .38);
}
pre.code code { font: inherit; }

code.inline {
  padding: 1px 5px;
  border: 1px solid var(--edge);
  border-radius: 5px;
  background: var(--glass-2);
  color: var(--ink);
  font: 400 12.5px/1.45 var(--mono);
  overflow-wrap: anywhere;
}

/* ------------------------------------------------------------------- table */
.spec {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  border-radius: var(--r);
  overflow: hidden;
  font-size: 13.5px;
}
.spec th,
.spec td {
  padding: 11px 16px;
  border-bottom: 1px solid var(--edge-soft);
  text-align: left;
  vertical-align: top;
}
.spec tr:last-child th,
.spec tr:last-child td { border-bottom: 0; }
.spec th {
  width: 220px;
  color: var(--ink-3);
  font-weight: 500;
  background: rgba(255, 255, 255, .022);
}
.spec td { color: var(--ink-2); }
.spec td code.inline { white-space: nowrap; }

/* --------------------------------------------------------------------- faq */
.faq {
  border: 1px solid var(--edge);
  border-radius: var(--r-lg);
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, .04), rgba(255, 255, 255, .012));
  box-shadow: var(--highlight), var(--shadow-sm);
  -webkit-backdrop-filter: blur(var(--blur));
  backdrop-filter: blur(var(--blur));
}
.faq details { border-bottom: 1px solid var(--edge-soft); }
.faq details:last-child { border-bottom: 0; }

.faq summary {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 15px 18px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 500;
  list-style: none;
  cursor: pointer;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  color: var(--ink-3);
  font: 400 16px/1 var(--mono);
}
.faq details[open] summary::after { content: "-"; }
.faq details[open] summary { background: rgba(255, 255, 255, .022); }

.faq .answer {
  max-width: 82ch;
  padding: 0 18px 16px;
  color: var(--ink-2);
  font-size: 13.5px;
}
.faq .answer p { margin: 0 0 9px; }
.faq .answer p:last-child { margin-bottom: 0; }

/* --------------------------------------------------------------------- cta */
.cta {
  position: relative;
  overflow: hidden;
  border-radius: var(--r-xl);
  border-color: var(--edge-2);
  padding: 38px 34px;
  text-align: center;
}
.cta h2 {
  margin: 0 0 8px;
  font: 600 clamp(23px, 2.8vw, 32px)/1.14 var(--font-display);
  letter-spacing: -.03em;
}
.cta p {
  max-width: 58ch;
  margin: 0 auto 22px;
  color: var(--ink-2);
}
.cta .hero-actions { justify-content: center; }

/* -------------------------------------------------------------------- doc */
.doc {
  max-width: 80ch;
  margin: 40px auto 64px;
  border-radius: var(--r-xl);
  padding: 38px 40px 46px;
}
.doc h1 {
  margin: 0 0 5px;
  font: 600 clamp(27px, 3.2vw, 36px)/1.14 var(--font-display);
  letter-spacing: -.035em;
}
.doc .updated {
  margin: 0 0 28px;
  color: var(--ink-3);
  font-size: 12.5px;
}
.doc h2 {
  margin: 34px 0 9px;
  font: 600 19px/1.3 var(--font-display);
  letter-spacing: -.02em;
}
.doc h3 {
  margin: 24px 0 6px;
  font: 600 15px/1.35 var(--font-display);
}
.doc p,
.doc li {
  color: var(--ink-2);
  font-size: 14.5px;
  line-height: 1.72;
}
.doc ul,
.doc ol { margin: 0 0 14px; padding-left: 20px; }
.doc ul { list-style: none; padding-left: 0; }
.doc ul li {
  position: relative;
  margin-bottom: 6px;
  padding-left: 17px;
}
.doc ul li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: .7em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--ink-3);
}
.doc ol { list-style: decimal; }
.doc ol li { margin-bottom: 6px; padding-left: 3px; }
.doc ol li::marker { color: var(--ink-3); font-family: var(--mono); font-size: 12px; }
.doc .spec,
.doc pre.code,
.doc .notice,
.doc .faq { margin: 14px 0; }
.doc > :first-child { margin-top: 0; }

/* ----------------------------------------------------------------- footer */
.site-foot {
  margin-top: 24px;
  padding: 42px 0 34px;
  border-top: 1px solid var(--edge-soft);
  background: rgba(255, 255, 255, .014);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
}

.foot-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(4, 1fr);
  gap: 26px;
}
.foot-col h4 {
  margin: 0 0 10px;
  color: var(--ink-3);
  font: 600 10.5px/1 var(--font);
  letter-spacing: 1px;
  text-transform: uppercase;
}
.foot-col a {
  display: block;
  padding: 3px 0;
  color: var(--ink-2);
  font-size: 13px;
  text-decoration: none;
}
.foot-col a:hover { color: var(--ink); }
.foot-brand p {
  max-width: 34ch;
  margin: 12px 0 0;
  color: var(--ink-3);
  font-size: 12.5px;
}

.foot-legal {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  margin-top: 30px;
  padding-top: 18px;
  border-top: 1px solid var(--edge-soft);
  color: var(--ink-3);
  font-size: 12px;
}

/* -------------------------------------------------------------------- misc */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border: 1px solid var(--edge-2);
  border-radius: 6px;
  color: var(--ink-2);
  font: 500 10.5px/1.5 var(--mono);
  letter-spacing: .4px;
  text-transform: uppercase;
}
.badge-live {
  border-color: rgba(87, 184, 162, .5);
  background: rgba(63, 157, 138, .1);
  color: var(--accent-2);
}

.kbd {
  display: inline-block;
  padding: 1px 6px;
  border: 1px solid var(--edge-2);
  border-bottom-width: 2px;
  border-radius: 5px;
  background: var(--glass-2);
  color: var(--ink);
  font: 500 11.5px/1.5 var(--mono);
}

.toc {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: 18px 0 6px;
}
.toc a {
  padding: 6px 10px;
  border: 1px solid var(--edge);
  border-radius: 7px;
  background: var(--glass);
  color: var(--ink-2);
  font-size: 12px;
  text-decoration: none;
}
.toc a:hover { color: var(--ink); border-color: var(--edge-2); background: var(--glass-2); }

.actions { display: flex; flex-wrap: wrap; gap: 9px; align-items: center; }

.error-page { text-align: center; }
.error-code {
  display: block;
  margin: 0 0 8px;
  color: var(--ink);
  font: 600 clamp(64px, 12vw, 120px)/1 var(--font-display);
  letter-spacing: -.06em;
}

/* A restrained fade on entry, using scroll-driven animation where supported.
   Unsupported browsers simply see the final state. */
@keyframes reveal {
  from { opacity: .001; transform: translateY(8px); }
  to   { opacity: 1; transform: none; }
}
@media (prefers-reduced-motion: no-preference) {
  @supports (animation-timeline: view()) {
    .reveal {
      animation: reveal linear both;
      animation-timeline: view();
      animation-range: entry 0% entry 28%;
    }
  }
}

/* --------------------------------------------------------------- responsive */
@media (max-width: 900px) {
  .site-head .wrap { flex-wrap: nowrap; }
  .site-nav {
    display: none;
    position: absolute;
    top: var(--head);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 10px 20px 16px;
    background: rgba(12, 12, 14, .97);
    border-bottom: 1px solid var(--edge);
    box-shadow: var(--shadow);
    -webkit-backdrop-filter: blur(22px);
    backdrop-filter: blur(22px);
  }
  .site-nav.is-open { display: flex; }
  .site-nav a {
    width: 100%;
    padding: 10px 12px;
    border-radius: 8px;
    font-size: 13.5px;
  }
  .site-nav a.is-active::after { display: none; }
  .nav-toggle { display: inline-flex; }

  .hero { padding: 54px 0 44px; }
  .hero .wrap { grid-template-columns: 1fr; gap: 34px; }
  .hero-visual { order: -1; min-height: 240px; }
  .hero-mark { width: min(56%, 210px); }
  .hero-orbit { width: min(72%, 280px); }

  .section { padding: 44px 0; }
  .grid-2,
  .grid-3,
  .split { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr 1fr 1fr; }
  .foot-brand { grid-column: 1 / -1; }
  .doc { padding: 30px 26px 36px; margin: 28px auto 48px; }
}

@media (max-width: 640px) {
  .wrap { padding: 0 18px; }

  .hero { padding: 40px 0 34px; }
  .hero h1 { letter-spacing: -.03em; }
  .hero-lede { font-size: 16px; }
  .hero-actions .btn { width: 100%; }
  .hero-visual { min-height: 200px; }

  .section { padding: 36px 0; }
  .section-head { margin-bottom: 22px; }

  .card { padding: 17px; }
  .step { grid-template-columns: 34px 1fr; gap: 12px; padding: 15px; }
  .step-n { width: 30px; height: 30px; font-size: 12.5px; }

  .cta { padding: 28px 20px; }
  .doc { padding: 24px 18px 30px; margin: 18px auto 38px; }
  .doc h2 { margin-top: 28px; }

  .spec,
  .spec tbody,
  .spec tr,
  .spec th,
  .spec td { display: block; width: auto; }
  .spec tr { border-bottom: 1px solid var(--edge-soft); }
  .spec tr:last-child { border-bottom: 0; }
  .spec th {
    padding: 10px 14px 2px;
    border-bottom: 0;
    background: transparent;
  }
  .spec td { padding: 0 14px 11px; }
  .spec td code.inline { white-space: normal; }

  .road { padding: 4px 15px; }
  .road-item { grid-template-columns: 12px 1fr; }
  .road-when { grid-column: 2; margin-top: 3px; }

  .foot-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
  .foot-brand { grid-column: 1 / -1; }
  .foot-legal { flex-direction: column; }
}