/* Glass & Understory — fernworks.dev
   The forest is a temperature, not an illustration: every neutral is
   hue-shifted toward 152°, shadows are tinted forest, one saturated
   green covers ≤5% of any view, and the fern is the site's only curve. */

@font-face {
  font-family: "Geist";
  src: url("/assets/geist-var.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
}
@font-face {
  font-family: "GeistFB";
  src: local("Helvetica Neue"), local("Arial");
  size-adjust: 96%;
  ascent-override: 92%;
  descent-override: 24%;
}

:root {
  --bg: #f2f5f1;
  --bg-2: #e8eee7;
  --s1: #ffffff;
  --s2: #fafbf9;
  --bg-wash: radial-gradient(120% 90% at 78% -10%, rgba(15, 122, 67, 0.09), transparent 62%);
  --glass: rgba(255, 255, 255, 0.62);
  --glass-edge: rgba(255, 255, 255, 0.85);
  --glass-line: rgba(16, 42, 28, 0.09);
  --ink-1: #101a14;
  --ink-2: #35453b;
  --ink-3: #5a6b60;
  --ink-4: #8b9a90;
  --accent: #0f7a43;
  --accent-press: #0b6236;
  --accent-deep: #0a3d24;
  --accent-tint: rgba(15, 122, 67, 0.1);
  --amber: #8a6410;
  --amber-tint: rgba(138, 100, 16, 0.12);
  --line: #e1e7de;
  --line-2: #cfd8cb;
  --e1: 0 1px 2px rgba(16, 42, 28, 0.05);
  --e2: 0 2px 4px rgba(16, 42, 28, 0.05), 0 8px 16px -6px rgba(16, 42, 28, 0.08);
  --e3: 0 1px 2px rgba(16, 42, 28, 0.06), 0 14px 30px -12px rgba(16, 42, 28, 0.15);
  --glow: none;
  --grain-op: 0.035;
  --grain-blend: overlay;
  --fern-op: 0.55;
}
:root[data-theme="dark"] {
  --bg: #0a0f0c;
  --bg-2: #0d1512;
  --s1: #101713;
  --s2: #141c17;
  --bg-wash: radial-gradient(120% 90% at 78% -10%, rgba(31, 138, 80, 0.13), transparent 60%);
  --glass: rgba(17, 26, 21, 0.58);
  --glass-edge: rgba(255, 255, 255, 0.07);
  --glass-line: rgba(255, 255, 255, 0.08);
  --ink-1: #e9f0ea;
  --ink-2: #c2cfc6;
  --ink-3: #93a398;
  --ink-4: #6e7f74;
  --accent: #46d389;
  --accent-press: #5fe39b;
  --accent-deep: #2fa968;
  --accent-tint: rgba(70, 211, 137, 0.12);
  --amber: #d9a648;
  --amber-tint: rgba(217, 166, 72, 0.14);
  --line: rgba(255, 255, 255, 0.07);
  --line-2: rgba(255, 255, 255, 0.13);
  --e1: none;
  --e2: 0 8px 24px -12px rgba(0, 0, 0, 0.7);
  --e3: 0 16px 40px -16px rgba(0, 0, 0, 0.8);
  --glow: 0 0 0 1px rgba(70, 211, 137, 0.2), 0 10px 34px -14px rgba(70, 211, 137, 0.3);
  --grain-op: 0.05;
  --grain-blend: soft-light;
  --fern-op: 0.68;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0a0f0c;
    --bg-2: #0d1512;
    --s1: #101713;
    --s2: #141c17;
    --bg-wash: radial-gradient(120% 90% at 78% -10%, rgba(31, 138, 80, 0.13), transparent 60%);
    --glass: rgba(17, 26, 21, 0.58);
    --glass-edge: rgba(255, 255, 255, 0.07);
    --glass-line: rgba(255, 255, 255, 0.08);
    --ink-1: #e9f0ea;
    --ink-2: #c2cfc6;
    --ink-3: #93a398;
    --ink-4: #6e7f74;
    --accent: #46d389;
    --accent-press: #5fe39b;
    --accent-deep: #2fa968;
    --accent-tint: rgba(70, 211, 137, 0.12);
    --amber: #d9a648;
    --amber-tint: rgba(217, 166, 72, 0.14);
    --line: rgba(255, 255, 255, 0.07);
    --line-2: rgba(255, 255, 255, 0.13);
    --e1: none;
    --e2: 0 8px 24px -12px rgba(0, 0, 0, 0.7);
    --e3: 0 16px 40px -16px rgba(0, 0, 0, 0.8);
    --glow: 0 0 0 1px rgba(70, 211, 137, 0.2), 0 10px 34px -14px rgba(70, 211, 137, 0.3);
    --grain-op: 0.05;
    --grain-blend: soft-light;
    --fern-op: 0.68;
  }
}

* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--bg-wash), var(--bg);
  background-attachment: fixed;
  color: var(--ink-1);
  font:
    16px/1.7 Geist,
    GeistFB,
    system-ui,
    sans-serif;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 40;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='.5'/%3E%3C/svg%3E");
  background-size: 140px;
  mix-blend-mode: var(--grain-blend);
  opacity: var(--grain-op);
}

h1,
h2,
h3 {
  line-height: 1.25;
  text-wrap: balance;
  color: var(--ink-1);
}
h2 {
  font-size: 26px;
  font-weight: 560;
  letter-spacing: -0.02em;
  margin: 56px 0 10px;
}
h3 {
  font-size: 16.5px;
  font-weight: 560;
  letter-spacing: -0.01em;
  margin: 30px 0 6px;
}
p {
  margin: 0 0 16px;
}
a {
  color: var(--accent);
  text-decoration: none;
}
main.doc a,
.prose a {
  background: linear-gradient(var(--accent), var(--accent)) 0 100% / 0% 1.5px no-repeat;
  transition: background-size 180ms cubic-bezier(0.2, 0.7, 0.3, 1);
}
main.doc a:hover,
main.doc a:focus-visible,
.prose a:hover,
.prose a:focus-visible {
  background-size: 100% 1.5px;
}
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  box-shadow: var(--glow);
}
.eyebrow {
  font-size: 11.5px;
  font-weight: 620;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-4);
}

code {
  font:
    500 0.9em/1 ui-monospace,
    SFMono-Regular,
    "Cascadia Mono",
    Menlo,
    monospace;
  letter-spacing: -0.005em;
  color: var(--ink-1);
  background: color-mix(in srgb, var(--ink-1) 6%, transparent);
  padding: 1.5px 5px;
  border-radius: 4px;
}
code.cmd {
  background: var(--accent-tint);
  color: var(--accent);
  font-weight: 600;
}
code.cmd::before {
  content: "›";
  opacity: 0.55;
  margin-right: 5px;
}
pre {
  position: relative;
  background: var(--s1);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--e1);
  padding: 16px 52px 16px 18px;
  overflow-x: auto;
  font-size: 13.5px;
  line-height: 1.62;
}
pre code {
  background: none;
  padding: 0;
  font-weight: 400;
  color: var(--ink-2);
}
pre[data-lang]::before {
  content: attr(data-lang);
  position: absolute;
  top: 10px;
  right: 44px;
  font-size: 11px;
  letter-spacing: 0.09em;
  color: var(--ink-4);
  text-transform: uppercase;
}
pre .cmt {
  color: var(--ink-4);
}

/* ---- glass (four earned elements site-wide) ---- */
.glass {
  background: var(--glass);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  backdrop-filter: blur(16px) saturate(150%);
  border: 1px solid var(--glass-line);
  box-shadow:
    inset 0 1px 0 var(--glass-edge),
    var(--e3);
}
@supports not (backdrop-filter: blur(1px)) {
  .glass {
    background: var(--s1);
  }
}

/* ---- topbar ---- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  border-bottom: 1px solid var(--line);
  border-left: 0;
  border-right: 0;
  border-top: 0;
  box-shadow: inset 0 1px 0 var(--glass-edge);
}
.topbar .in {
  display: flex;
  align-items: center;
  gap: 22px;
  padding: 14px 28px;
  max-width: 1080px;
  margin: 0 auto;
}
.topbar .brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 620;
  font-size: 16px;
  letter-spacing: -0.01em;
  color: var(--ink-1);
}
.topbar .brand svg {
  width: 15px;
  height: 15px;
  color: var(--accent);
}
.topbar .brand span {
  color: var(--accent);
}
.topbar nav {
  display: flex;
  gap: 20px;
  margin-left: auto;
  align-items: center;
}
.topbar nav a {
  color: var(--ink-3);
  font-size: 14.5px;
  transition: color 140ms;
}
.topbar nav a:hover {
  color: var(--ink-1);
}
.theme-toggle {
  background: none;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  color: var(--ink-3);
  width: 30px;
  height: 30px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}
.theme-toggle:hover {
  color: var(--ink-1);
  border-color: var(--ink-4);
}
.theme-toggle svg {
  width: 14px;
  height: 14px;
}

/* ---- home ---- */
.stage {
  position: relative;
  min-height: calc(100vh - 59px);
  overflow: hidden;
}
.stage canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  opacity: var(--fern-op);
  -webkit-mask-image: radial-gradient(120% 100% at 85% 90%, #000 35%, transparent 78%);
  mask-image: radial-gradient(120% 100% at 85% 90%, #000 35%, transparent 78%);
}
.stage .panel {
  position: relative;
  z-index: 1;
  max-width: 560px;
  margin: clamp(48px, 14vh, 140px) 0 64px clamp(24px, 8vw, 110px);
  border-radius: 12px;
  padding: 34px 36px 30px;
}
.stage .panel h1 {
  font-size: clamp(38px, 4.4vw, 60px);
  line-height: 1.04;
  font-weight: 560;
  letter-spacing: -0.028em;
  margin: 12px 0 12px;
}
.stage .panel .dek {
  font-size: clamp(17px, 1.5vw, 19px);
  line-height: 1.55;
  letter-spacing: -0.011em;
  color: var(--ink-3);
  max-width: 46ch;
  margin: 0;
}
.work {
  margin-top: 24px;
}
.work a.tile {
  display: block;
  background: var(--s1);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--e1);
  padding: 15px 18px;
  transition:
    transform 160ms cubic-bezier(0.2, 0.7, 0.3, 1),
    border-color 160ms,
    box-shadow 160ms;
}
.work a.tile:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
  box-shadow: var(--e2);
}
.work a.tile:active {
  transform: translateY(-1px);
}
.work .tile b {
  color: var(--ink-1);
  font-weight: 620;
  font-size: 15.5px;
}
.work .tile span {
  display: block;
  color: var(--ink-3);
  font-size: 14px;
  margin-top: 3px;
}
.work .tile small {
  display: block;
  margin-top: 8px;
  font:
    500 13px/1 ui-monospace,
    Menlo,
    monospace;
  color: var(--accent);
}
.houserule {
  margin-top: 22px;
  font-size: 13.5px;
  color: var(--ink-4);
  max-width: 44ch;
}

/* ---- product page ---- */
.hero {
  max-width: 880px;
  margin: 0 auto;
  padding: clamp(48px, 9vh, 88px) 24px 40px;
}
.hero h1 {
  font-size: clamp(38px, 4.4vw, 58px);
  line-height: 1.04;
  font-weight: 560;
  letter-spacing: -0.028em;
  margin: 14px 0 12px;
}
.hero .dek {
  font-size: clamp(17px, 1.5vw, 19px);
  line-height: 1.55;
  color: var(--ink-3);
  max-width: 56ch;
  margin: 0 0 6px;
}
.ctas {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  margin: 22px 0 10px;
}
.install {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  border-radius: 12px;
  padding: 13px 16px 13px 20px;
  font:
    500 15px/1 ui-monospace,
    Menlo,
    monospace;
  color: var(--ink-1);
}
.install .prompt {
  color: var(--accent);
}
.trust {
  font-size: 13.5px;
  color: var(--ink-4);
}
.wrap {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 24px 80px;
}

.statbar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--s1);
  box-shadow: var(--e1);
  overflow: hidden;
  margin: 26px 0 8px;
}
.statbar .stat {
  padding: 18px 20px;
  border-left: 1px solid var(--line);
}
.statbar .stat:first-child {
  border-left: 0;
}
.statbar b {
  display: block;
  font-size: 28px;
  font-weight: 620;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}
.statbar span {
  font-size: 13px;
  color: var(--ink-3);
  line-height: 1.45;
  display: block;
  margin-top: 3px;
}
.statcap {
  font-size: 13px;
  color: var(--ink-4);
  margin: 8px 2px 0;
}

.cols {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 0;
  margin-top: 24px;
}
.cols .col {
  padding: 4px 26px 4px 0;
  border-left: 1px solid var(--line);
  padding-left: 26px;
}
.cols .col:first-child {
  border-left: 0;
  padding-left: 0;
}
.cols h3 {
  margin-top: 0;
}
.cols p {
  color: var(--ink-3);
  font-size: 14.5px;
  margin: 0;
}
.cols p em {
  display: block;
  font-style: normal;
  color: var(--ink-4);
  font-size: 13.5px;
  margin-top: 10px;
}

.proofs {
  display: grid;
  gap: 14px;
  margin-top: 22px;
}
.proofcase {
  background: var(--s1);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--e1);
  padding: 20px 24px;
}
.proofcase b {
  font-weight: 620;
}
.proofcase p {
  color: var(--ink-3);
  font-size: 14.5px;
  margin: 6px 0 0;
}
.honesty {
  font-size: 13.5px;
  color: var(--ink-4);
  margin-top: 12px;
}

footer {
  color: var(--ink-4);
  font-size: 13px;
  border-top: 1px solid var(--line);
  margin-top: 64px;
  padding-top: 18px;
}

/* ---- terminal ---- */
.term {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--e3);
  background: var(--s1);
  margin-top: 22px;
}
.term .bar {
  display: flex;
  align-items: center;
  height: 34px;
  padding: 0 12px;
  border-bottom: 1px solid var(--line);
  position: relative;
}
.term .bar i {
  width: 11px;
  height: 11px;
  border-radius: 999px;
  margin-right: 7px;
  opacity: 0.62;
}
.term .bar i:nth-child(1) {
  background: #ed6a5e;
}
.term .bar i:nth-child(2) {
  background: #f4bf4f;
}
.term .bar i:nth-child(3) {
  background: #61c554;
}
.term .bar .title {
  position: absolute;
  left: 0;
  right: 0;
  text-align: center;
  font:
    12px/34px ui-monospace,
    Menlo,
    monospace;
  color: var(--ink-3);
  pointer-events: none;
}
.term .bar .paused {
  position: absolute;
  right: 10px;
  top: 8px;
  font-size: 11px;
  color: var(--ink-4);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 1px 8px;
  opacity: 0;
  transition: opacity 160ms;
}
.term.is-paused .bar .paused {
  opacity: 1;
}
.term .body {
  height: min(56vh, 440px);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 16px 20px;
  font:
    13.5px/1.7 ui-monospace,
    Menlo,
    monospace;
}
.term .ln {
  white-space: pre-wrap;
  color: var(--ink-1);
}
.term .ln .sig {
  color: var(--ink-3);
}
.term .ln.agent .sig {
  color: var(--accent);
}
.term .ln.agent {
  color: color-mix(in srgb, var(--ink-1) 92%, transparent);
}
.term .ln.out {
  color: color-mix(in srgb, var(--ink-2) 88%, transparent);
}
.term .ln.out .ok {
  color: var(--accent);
  font-weight: 600;
}
.term .ln.path {
  margin: 3px 0;
}
.term .ln.path .chipf {
  display: inline-block;
  font-size: 12px;
  background: var(--accent-tint);
  border-radius: 4px;
  padding: 2px 8px;
  color: var(--ink-2);
}
.term .ln.path .chipf .sig {
  color: var(--accent);
  margin-right: 4px;
}
.term .caret {
  display: inline-block;
  width: 1ch;
  background: var(--ink-2);
  animation: caret 1.05s steps(1) infinite;
}
@keyframes caret {
  50% {
    opacity: 0;
  }
}
.termcap {
  font-size: 13px;
  color: var(--ink-4);
  margin: 10px 2px 0;
}

/* ---- copy button ---- */
.copybtn {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  border: 1px solid var(--line-2);
  background: transparent;
  color: var(--ink-3);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  opacity: 0.5;
  transition:
    opacity 140ms,
    border-color 140ms,
    color 140ms;
}
pre:hover .copybtn,
.install:hover .copybtn,
.copybtn:focus-visible {
  opacity: 1;
}
.copybtn.ok {
  border-color: var(--accent);
  color: var(--accent);
}
.copybtn svg {
  width: 14px;
  height: 14px;
}
.install .copybtn {
  position: static;
  margin-left: 4px;
}
@media (pointer: coarse) {
  .copybtn {
    opacity: 1;
  }
}
.sr {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

/* ---- tables ---- */
.tablewrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--s1);
  box-shadow: var(--e1);
  margin: 16px 0;
}
table {
  border-collapse: collapse;
  width: 100%;
  min-width: 560px;
  font-size: 14.5px;
}
th {
  text-align: left;
  color: var(--ink-4);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
  background: var(--s1);
}
td {
  padding: 9px 14px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
tbody tr:last-child td {
  border-bottom: none;
}
tbody tr:hover {
  background: color-mix(in srgb, var(--ink-1) 3%, transparent);
}
table.ref {
  table-layout: fixed;
  min-width: 0;
}
table.ref col.c-code {
  width: 88px;
}
table.ref col.c-mean {
  width: 210px;
}
a.code {
  font:
    500 13px/1 ui-monospace,
    Menlo,
    monospace;
  background: var(--accent-tint);
  color: var(--accent);
  border-radius: 4px;
  padding: 2px 6px;
  white-space: nowrap;
}
tr:target {
  box-shadow: inset 3px 0 0 var(--accent);
  background: color-mix(in srgb, var(--accent) 6%, transparent);
}
.chip {
  display: inline-block;
  font-size: 11px;
  font-weight: 620;
  letter-spacing: 0.04em;
  border-radius: 999px;
  padding: 1.5px 8px;
  margin-left: 6px;
  vertical-align: 1px;
}
.chip.warn {
  background: var(--amber-tint);
  color: var(--amber);
}
.chip.err {
  background: var(--accent-tint);
  color: var(--accent);
}
@media (min-width: 900px) {
  .tablewrap:has(.ref) {
    overflow: visible;
  }
  .ref thead th {
    position: sticky;
    top: 59px;
    z-index: 1;
  }
}

/* ---- callouts ---- */
blockquote.note,
blockquote.warn {
  margin: 18px 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--accent-tint);
  padding: 14px 18px;
  color: var(--ink-2);
  font-size: 14.5px;
}
blockquote.warn {
  background: var(--amber-tint);
}
blockquote .label {
  font-size: 11.5px;
  font-weight: 620;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 4px;
}
blockquote.warn .label {
  color: var(--amber);
}
blockquote p:last-child {
  margin: 0;
}

/* ---- docs layout ---- */
.layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  max-width: 1080px;
  margin: 0 auto;
  min-height: calc(100vh - 59px);
}
nav.side {
  border-right: 1px solid var(--line);
  padding: 28px 18px;
}
nav.side .eyebrow {
  margin: 0 10px 10px;
}
nav.side a {
  display: block;
  color: var(--ink-3);
  padding: 7px 10px;
  border-radius: 8px;
  font-size: 14.5px;
}
nav.side a:hover {
  color: var(--ink-1);
  background: var(--s1);
}
nav.side a.active {
  color: var(--accent);
  font-weight: 600;
  background: var(--s1);
  box-shadow: inset 2px 0 0 var(--accent);
}
nav.side summary {
  display: none;
}
main.doc {
  padding: 36px 40px 80px;
  min-width: 0;
}
main.doc h1 {
  font-size: 32px;
  font-weight: 560;
  letter-spacing: -0.024em;
  margin: 0 0 10px;
}
main.doc h2 {
  font-size: 21px;
  margin: 52px 0 10px;
}
main.doc h2:first-of-type {
  margin-top: 28px;
}
main.doc h3 {
  font-size: 17px;
  margin: 30px 0 6px;
}
main.doc p,
main.doc li {
  max-width: 68ch;
  font-size: 16px;
}
main.doc [id] {
  scroll-margin-top: 84px;
}
a.hash {
  opacity: 0;
  margin-left: 0.4em;
  color: var(--ink-4);
  font-weight: 400;
  background: none;
}
h2:hover a.hash,
h3:hover a.hash,
h2:focus-within a.hash,
h3:focus-within a.hash {
  opacity: 1;
}
.pagenav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 56px;
}
.pagenav a {
  display: block;
  background: var(--s1);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 16px;
  transition:
    transform 160ms cubic-bezier(0.2, 0.7, 0.3, 1),
    border-color 160ms;
}
.pagenav a:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
}
.pagenav a span {
  display: block;
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-4);
  margin-bottom: 2px;
}
.pagenav a.next {
  text-align: right;
}
.pagenav a b {
  color: var(--ink-1);
  font-weight: 560;
}
aside.toc {
  display: none;
}
@media (min-width: 1180px) {
  .layout {
    grid-template-columns: 220px minmax(0, 1fr) 208px;
    max-width: 1240px;
  }
  .topbar .in {
    max-width: 1240px;
  }
  aside.toc {
    display: block;
    padding: 36px 8px 36px 0;
  }
  aside.toc > div {
    position: sticky;
    top: 84px;
    max-height: calc(100vh - 104px);
    overflow: auto;
  }
  aside.toc nav a {
    display: block;
    font-size: 13px;
    color: var(--ink-3);
    padding: 5px 10px;
  }
  aside.toc nav a:hover {
    color: var(--ink-1);
  }
  aside.toc nav a.on {
    color: var(--ink-1);
    box-shadow: inset 2px 0 0 var(--accent);
  }
}

/* ---- diagrams ---- */
figure.band {
  margin: 26px 0;
  background: var(--s1);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--e1);
  padding: 28px 20px 18px;
  max-width: 1040px;
}
figure.band figcaption {
  font-size: 12.5px;
  color: var(--ink-4);
  text-align: center;
  margin-top: 10px;
}
.gl-dia {
  width: 100%;
  height: auto;
  display: block;
}
.gl-dia .rail {
  stroke: var(--accent);
  stroke-width: 3;
  stroke-linecap: round;
  fill: none;
  vector-effect: non-scaling-stroke;
}
.gl-dia .rework {
  stroke: var(--accent);
  stroke-width: 2;
  stroke-dasharray: 5 5;
  opacity: 0.8;
  fill: none;
  vector-effect: non-scaling-stroke;
}
.gl-dia .refline {
  stroke: var(--accent-deep);
  stroke-width: 1.5;
  stroke-dasharray: 2 4;
  fill: none;
  opacity: 0.9;
  vector-effect: non-scaling-stroke;
}
.gl-dia .stn-dot {
  fill: var(--s1);
  stroke: var(--accent);
  stroke-width: 3;
  vector-effect: non-scaling-stroke;
}
.gl-dia .stn-core {
  fill: var(--accent);
}
.gl-dia .gate {
  fill: none;
  stroke: var(--accent);
  stroke-width: 1.5;
  stroke-dasharray: 3 3;
  vector-effect: non-scaling-stroke;
}
.gl-dia .stn-label {
  fill: var(--ink-1);
  font:
    600 13px/1 Geist,
    system-ui,
    sans-serif;
  text-anchor: middle;
}
.gl-dia .chipr {
  fill: var(--accent-tint);
  stroke: var(--line);
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
}
.gl-dia .chip-text {
  fill: var(--ink-2);
  font:
    12px ui-monospace,
    Menlo,
    monospace;
  text-anchor: middle;
}
.gl-dia .gloss {
  fill: var(--ink-3);
  font:
    11.5px Geist,
    system-ui,
    sans-serif;
}
.gl-dia .sheet {
  fill: var(--s1);
  stroke: var(--line-2);
  vector-effect: non-scaling-stroke;
}
.gl-dia .mono {
  fill: var(--ink-2);
  font:
    12px ui-monospace,
    Menlo,
    monospace;
}
.gl-dia .dim {
  fill: var(--ink-4);
}
.gl-dia .anchor {
  fill: var(--accent);
}
.gl-dia .arrow {
  fill: var(--accent);
}
@media (hover: hover) and (prefers-reduced-motion: no-preference) {
  .gl-dia .stn .stn-dot,
  .gl-dia .stn .chipr {
    transition:
      stroke-width 150ms,
      stroke 150ms;
  }
  .gl-dia .stn:hover .stn-dot {
    stroke-width: 4;
  }
  .gl-dia .stn:hover .chipr {
    stroke: var(--accent);
  }
}
ol.railv {
  list-style: none;
  margin: 0;
  padding: 0 0 0 34px;
  position: relative;
  display: none;
}
ol.railv::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--accent);
}
ol.railv li {
  position: relative;
  padding: 0 0 18px;
  max-width: 60ch;
}
ol.railv li::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 4px;
  width: 14px;
  height: 14px;
  border-radius: 999px;
  background: var(--s1);
  border: 3px solid var(--accent);
}
ol.railv li.gate::before {
  box-shadow: 0 0 0 3px var(--accent-tint);
}
ol.railv li b {
  font-weight: 620;
}
ol.railv li span {
  display: block;
  color: var(--ink-3);
  font-size: 14px;
}
ol.railv li.noteli {
  border-left: 2px dashed var(--accent);
  margin-left: -34px;
  padding-left: 32px;
  color: var(--ink-3);
  font-size: 14px;
}
ol.railv li.noteli::before {
  display: none;
}
@media (max-width: 860px) {
  figure.band svg.gl-dia.wide {
    display: none;
  }
  ol.railv {
    display: block;
  }
}

/* ---- responsive ---- */
@media (max-width: 820px) {
  .stage .panel {
    margin: 40vh 20px 48px;
    max-width: none;
  }
}
@media (max-width: 720px) {
  .layout {
    grid-template-columns: 1fr;
  }
  nav.side {
    border-right: none;
    border-bottom: 1px solid var(--line);
    padding: 12px 18px;
  }
  nav.side summary {
    display: block;
    cursor: pointer;
    font-weight: 560;
    padding: 6px 4px;
    color: var(--ink-1);
  }
  nav.side summary::after {
    content: " ▾";
    color: var(--ink-4);
  }
  nav.side details:not([open]) .eyebrow {
    display: none;
  }
}
@media (min-width: 721px) {
  nav.side details {
    display: contents;
  }
}

/* ---- motion discipline ---- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}