/* Layout: an exam paper for science. Left-aligned editorial columns on a cool paper ground,
   specimens mounted on white plates, a grader's red pen for the marks, one moving orbit for the community. */
:root {
  --paper: #F5F5F8;
  --sheet: #FFFFFF;
  --ink: #16151C;
  --muted: #5C5C66;
  --faint: #8A8A95;
  --rule: #DCDCE3;
  --accent: #584B9A;
  --accent-ink: #3C336B;
  --accent-wash: #ECEAF6;
  --mark: #C2362B;
  --plate: #FFFFFF;
  --plate-dark: #151515;
  --code-bg: #15141B;
  --on-ink: #F5F5F8;
  --shadow: 22 21 40;
  --cap-ep: #4568B3;
  --cap-wd: #3D829E;
  --cap-sc: #3D6D94;
  --cap-gui: #596F95;
  --cap-hd: #7279A7;
  --cap-wl: #C0732E;
  --thread: #2F7FD0;

  --serif: "Newsreader", "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --fs-xs: 0.8125rem;
  --fs-s: 0.875rem;
  --fs-m: 1rem;
  --fs-l: 1.1875rem;
  --fs-xl: 1.625rem;
  --fs-2xl: 2.5rem;
  --radius: 14px;
  --head-h: 64px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0F0F14; --sheet: #17171E; --ink: #ECEBF2; --muted: #A9A8B6; --faint: #7C7B8A; --rule: #2C2B36;
    --accent: #A99FE6; --accent-ink: #CAC3F4; --accent-wash: #211E34; --mark: #F0675A;
    --plate: #F4F4F7; --plate-dark: #151515; --code-bg: #0B0B10; --on-ink: #0F0F14; --shadow: 0 0 0;
    --cap-ep: #87A3E2; --cap-wd: #73B6CE; --cap-sc: #7DA8CE; --cap-gui: #9AACCB; --cap-hd: #A9AED8; --cap-wl: #E59F62; --thread: #6DB3F2;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0F0F14; --sheet: #17171E; --ink: #ECEBF2; --muted: #A9A8B6; --faint: #7C7B8A; --rule: #2C2B36;
  --accent: #A99FE6; --accent-ink: #CAC3F4; --accent-wash: #211E34; --mark: #F0675A;
  --plate: #F4F4F7; --plate-dark: #151515; --code-bg: #0B0B10; --on-ink: #0F0F14; --shadow: 0 0 0;
  --cap-ep: #87A3E2; --cap-wd: #73B6CE; --cap-sc: #7DA8CE; --cap-gui: #9AACCB; --cap-hd: #A9AED8; --cap-wl: #E59F62; --thread: #6DB3F2;
  color-scheme: dark;
}

/* Base */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-padding-top: calc(var(--head-h) + 16px); -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 var(--fs-m)/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body::before {
  content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px);
  z-index: 30; background: var(--paper);
}
img { max-width: 100%; display: block; height: auto; }
a { color: inherit; }
h1, h2, h3, h4 { margin: 0; font-weight: 400; text-wrap: balance; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
figure { margin: 0; }
b, strong { font-weight: 600; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

.wrap {
  max-width: 1200px;
  margin-inline: auto;
  padding-left: max(24px, env(safe-area-inset-left, 0px));
  padding-right: max(24px, env(safe-area-inset-right, 0px));
}
@media (max-width: 560px) {
  .wrap { padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }
}

.eyebrow {
  font: 500 var(--fs-xs)/1.4 var(--sans);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  height: 42px; padding-inline: 16px;
  border: 1px solid var(--rule); border-radius: 8px;
  background: var(--sheet); color: var(--ink);
  font: 500 0.9375rem/1 var(--sans); text-decoration: none;
  transition: border-color .15s, background-color .15s, transform .15s;
}
.btn:hover { border-color: var(--ink); }
.btn-primary { background: var(--ink); border-color: var(--ink); color: var(--on-ink); }
.btn-primary:hover { background: var(--accent-ink); border-color: var(--accent-ink); }
.btn-quiet { background: transparent; }
.btn-small { height: 34px; padding-inline: 14px; font-size: var(--fs-s); }
.btn.is-soon { color: var(--faint); cursor: default; }
.btn.is-soon:hover { border-color: var(--rule); }
.soon {
  font: 500 0.8125rem/1 var(--sans); letter-spacing: .06em; text-transform: uppercase;
  padding: 4px 6px; border-radius: 4px; background: var(--accent-wash); color: var(--accent);
}
.icon-btn {
  display: inline-grid; place-items: center; width: 34px; height: 34px;
  border: 1px solid var(--rule); border-radius: 8px; background: transparent; color: var(--ink); cursor: pointer;
}
.icon-btn svg { width: 18px; height: 18px; }
.icon-btn:hover { border-color: var(--ink); }

/* Masthead */
.masthead {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20;
  background: color-mix(in srgb, var(--paper) 86%, transparent);
  backdrop-filter: saturate(1.4) blur(12px); -webkit-backdrop-filter: saturate(1.4) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s;
}
.masthead.is-scrolled { border-bottom-color: var(--rule); }
.masthead-row { height: var(--head-h); display: flex; align-items: center; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; flex-shrink: 0; }
.brand-mark { width: 26px; height: 26px; color: var(--ink); }
.brand-name { font: 500 1.1875rem/1 var(--serif); letter-spacing: -0.005em; }
.brand-name em { font-style: italic; }
.nav { display: flex; gap: 22px; margin-left: auto; }
.nav a { font-size: var(--fs-s); color: var(--muted); text-decoration: none; }
.nav a:hover { color: var(--ink); }
.nav a[data-link] { display: inline-flex; align-items: center; gap: 7px; }
.nav a.is-soon { color: var(--muted); cursor: default; }
.masthead-tools { display: flex; align-items: center; gap: 10px; }
@media (max-width: 880px) {
  .nav { display: none; }
  .masthead-tools { margin-left: auto; }
}
@media (max-width: 560px) { .masthead-tools .btn { display: none; } }

/* Hero */
.hero { padding-block: 64px 88px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr); gap: 48px; align-items: center; }
.hero-copy { display: grid; gap: 26px; min-width: 0; }
.hero-title {
  font: 400 clamp(3.4rem, 8.4vw, 7rem)/0.92 var(--serif);
  letter-spacing: -0.025em;
  font-variation-settings: "opsz" 72;
}
.hero-title em { font-style: italic; color: var(--accent-ink); }
.lede { font-size: var(--fs-l); line-height: 1.55; color: var(--muted); max-width: 33em; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; }
.tally {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 8px 0 0; border-top: 1px solid var(--rule);
}
.tally > div { padding: 14px 14px 0 0; display: flex; flex-direction: column; }
.tally > div + div { padding-left: 14px; border-left: 1px solid var(--rule); }
.tally dt { font: 500 0.8125rem/1.3 var(--sans); letter-spacing: .06em; text-transform: uppercase; color: var(--faint); }
.tally dd { margin: auto 0 0; padding-top: 6px; font: 400 2rem/1 var(--serif); font-variant-numeric: lining-nums tabular-nums; }

.ring {
  position: relative; width: min(100%, 560px); aspect-ratio: 1; justify-self: center;
  container-type: inline-size;
}
.ring-lines { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.ring-lines circle { fill: none; stroke: var(--rule); stroke-width: 0.25; }
.ring-mid { stroke-dasharray: 0.5 1.1; }
.ring-inner { fill: var(--sheet) !important; }
.ring-caps {
  font: 500 2.3px var(--sans); letter-spacing: 0.14px;
  text-anchor: middle; dominant-baseline: central;
}
.t-ep { fill: var(--cap-ep); } .t-wd { fill: var(--cap-wd); } .t-sc { fill: var(--cap-sc); }
.t-gui { fill: var(--cap-gui); } .t-hd { fill: var(--cap-hd); }
.ring-core {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  display: grid; justify-items: center; gap: 0.35em; text-align: center; width: 30%;
}
.ring-core-num { font: 400 clamp(1.75rem, 9cqw, 3.25rem)/1 var(--serif); letter-spacing: -0.02em; }
.ring-core-num i { font-style: italic; color: var(--accent); }
.ring-core-cap { font: 500 clamp(0.5rem, 1.7cqw, 0.8125rem)/1.3 var(--sans); letter-spacing: .06em; text-transform: uppercase; color: var(--faint); }
.ring-plates { position: absolute; inset: 0; }
.ring-plate {
  position: absolute; width: 15.5%; aspect-ratio: 1;
  transform: translate(-50%, -50%) rotate(var(--tilt, 0deg));
  transition: transform .25s ease;
}
.ring-plate img {
  width: 100%; height: 100%; object-fit: cover; border-radius: 8px;
  background: var(--plate); border: 3px solid var(--plate);
  box-shadow: 0 1px 2px rgb(var(--shadow) / .12), 0 10px 24px -12px rgb(var(--shadow) / .35);
}
.ring-plate span {
  position: absolute; left: 50%; top: calc(100% + 6px); transform: translateX(-50%);
  font: italic 400 clamp(0.8125rem, 2.3cqw, 0.875rem)/1.1 var(--serif); color: var(--muted); white-space: nowrap;
}
.ring-plate.label-top span { top: auto; bottom: calc(100% + 6px); }
.ring-plate:hover { transform: translate(-50%, -50%) rotate(0deg) scale(1.08); z-index: 2; }
@container (max-width: 420px) { .ring-plate span { display: none; } }

@media (max-width: 960px) {
  .hero-grid { grid-template-columns: minmax(0, 1fr); gap: 40px; }
  .ring { width: min(100%, 520px); }
}
@media (max-width: 560px) {
  .hero { padding-block: 40px 56px; }
  .tally { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tally > div { padding: 12px 0 12px 0; border-left: 0 !important; padding-left: 0 !important; }
  .tally > div:first-child { grid-column: 1 / -1; }
  .tally > div + div { border-top: 1px solid var(--rule); }
  .tally > div:nth-child(odd):not(:first-child) { padding-left: 14px !important; border-left: 1px solid var(--rule) !important; }
}

/* Sections */
.section { padding-block: 72px; }
.section-tint { background: color-mix(in srgb, var(--sheet) 55%, var(--paper)); border-block: 1px solid var(--rule); }
.section-head { display: grid; gap: 14px; max-width: 760px; margin-bottom: 56px; }
.section-head h2, #cite h2 { font: 400 clamp(1.75rem, 3vw, 2.25rem)/1.12 var(--serif); letter-spacing: -0.015em; }
.section-lede { font-size: 1.0625rem; color: var(--muted); max-width: 38em; }
.section-head-row { max-width: none; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: end; gap: 14px 48px; }
.section-head-row > div { display: grid; gap: 14px; }
.section-head-center { margin-inline: auto; text-align: center; justify-items: center; }
@media (max-width: 760px) {
  .section { padding-block: 72px; }
  .section-head-row { grid-template-columns: minmax(0, 1fr); }
}

/* Capabilities: loop navigation and scenes */
.loop { display: grid; grid-template-columns: 230px minmax(0, 1fr); gap: 64px; align-items: start; }
.loop-nav {
  position: sticky; top: calc(var(--head-h) + 32px + env(safe-area-inset-top, 0px));
  display: grid; gap: 2px; padding-left: 14px; border-left: 1px solid var(--rule);
}
.loop-group { font: 500 0.8125rem/1 var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--faint); margin: 18px 0 8px; }
.loop-group:first-child { margin-top: 0; }
.loop-link {
  position: relative; display: grid; grid-template-columns: 12px 1fr auto; align-items: center; gap: 10px;
  padding: 7px 0; color: var(--muted); text-decoration: none; font-size: 0.9375rem;
}
.loop-link .dot { width: 9px; height: 9px; border-radius: 50%; border: 1.5px solid var(--c); }
.loop-link .n { font: 400 0.75rem/1 var(--sans); color: var(--faint); font-variant-numeric: tabular-nums; }
.loop-link::before {
  content: ""; position: absolute; left: -15px; top: 6px; bottom: 6px; width: 2px; border-radius: 2px;
  background: var(--c); transform: scaleY(0); transition: transform .25s;
}
.loop-link.is-active { color: var(--ink); }
.loop-link.is-active .dot { background: var(--c); }
.loop-link.is-active::before { transform: scaleY(1); }
.loop-link:hover { color: var(--ink); }
.loop-return {
  display: flex; align-items: center; gap: 8px; margin-top: 22px; padding-top: 14px; border-top: 1px dashed var(--rule);
  font: italic 400 0.9375rem/1.3 var(--serif); color: var(--accent); text-decoration: none;
}
.loop-return svg { width: 18px; height: 18px; flex-shrink: 0; }

.scenes { display: grid; gap: 104px; min-width: 0; }
.scene { min-width: 0; }
.scene-head { display: grid; gap: 12px; max-width: 720px; }
.scene-kicker {
  display: flex; align-items: center; gap: 10px;
  font: 500 var(--fs-xs)/1 var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--c);
}
.scene-kicker span {
  display: inline-grid; place-items: center; width: 22px; height: 22px; border-radius: 50%;
  border: 1.5px solid var(--c); font-size: 0.8125rem; letter-spacing: 0;
}
.scene h3 { font: 400 clamp(1.75rem, 3vw, 2.125rem)/1.12 var(--serif); letter-spacing: -0.015em; }
.scene-ask { font-size: 1.125rem; line-height: 1.55; }
.scene-count { font: 400 0.8125rem/1.5 var(--sans); color: var(--muted); }
.scene-count b { color: var(--ink); font-weight: 500; }

.sheet {
  margin-top: 28px; padding: 24px;
  background: var(--sheet); border: 1px solid var(--rule); border-radius: var(--radius);
  box-shadow: 0 1px 0 rgb(var(--shadow) / .03), 0 24px 48px -36px rgb(var(--shadow) / .3);
}
.sheet-split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 32px; align-items: start; }
@media (max-width: 1100px) and (min-width: 901px) { .sheet-split { grid-template-columns: minmax(0, 1fr); } }
@media (max-width: 720px) { .sheet-split { grid-template-columns: minmax(0, 1fr); } .sheet { padding: 16px; } }

.filmstrip { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.filmstrip img { width: 100%; aspect-ratio: 3 / 4; object-fit: cover; border-radius: 8px; background: var(--plate-dark); }
.filmstrip figcaption, .plate figcaption {
  margin-top: 8px; font: 400 0.8125rem/1.35 var(--sans); color: var(--muted);
}
.filmstrip figcaption b { display: block; color: var(--c); font-weight: 500; letter-spacing: .06em; text-transform: uppercase; }

.question { display: grid; gap: 14px; min-width: 0; }
.filmstrip + .question { margin-top: 22px; }
.q-text { font: 400 1rem/1.65 var(--sans); }
.options { display: grid; gap: 4px; }
.options li {
  position: relative; display: grid; width: fit-content; max-width: 100%; grid-template-columns: 22px 1fr; gap: 8px;
  padding: 8px 12px 8px 10px; border-radius: 8px; font-size: 0.9375rem; color: var(--muted);
}
.options li b { font: 500 0.8125rem/1.6 var(--sans); color: var(--faint); }
.options-code li { font: 400 0.78rem/1.6 var(--mono); overflow-wrap: anywhere; }
.options li.is-key { color: var(--ink); }
.options li.is-key b { color: var(--mark); }
.options li.is-key::after {
  content: ""; position: absolute; inset: -1px -4px -1px -3px;
  border: 1.6px solid var(--mark); border-radius: 50% 46% 52% 48% / 60% 55% 45% 40%;
  transform: rotate(-0.8deg); pointer-events: none; opacity: .9;
}
.options li.is-key::before {
  content: "✓"; position: absolute; right: -2px; top: -12px;
  font: italic 500 1.375rem/1 var(--serif); color: var(--mark); transform: rotate(8deg);
}
.q-foot { font: 400 0.8125rem/1.5 var(--sans); color: var(--faint); padding-top: 12px; border-top: 1px dashed var(--rule); }
.sheet > .q-foot { margin-top: 18px; }

.plate { min-width: 0; }
.wd-plate img { width: 100%; aspect-ratio: 1; object-fit: contain; background: var(--plate); border: 1px solid var(--rule); border-radius: 10px; }
.history { display: grid; gap: 0; position: relative; padding-left: 18px; }
.history::before { content: ""; position: absolute; left: 4px; top: 8px; bottom: 8px; width: 1px; background: var(--rule); }
.history li { position: relative; padding: 4px 0 8px; font-size: 0.9rem; color: var(--muted); line-height: 1.45; }
.history li::before {
  content: ""; position: absolute; left: -18px; top: 10px; width: 9px; height: 9px; border-radius: 50%;
  background: var(--sheet); border: 1.5px solid var(--c);
}
.history li.history-next { color: var(--ink); font: 500 1rem/1.6 var(--sans); }
.history li.history-next::before { background: var(--c); }

.code { min-width: 0; border-radius: 10px; overflow: hidden; background: var(--code-bg); color: #D7D9E0; }
.code-bar { display: flex; align-items: center; gap: 6px; padding: 10px 12px; border-bottom: 1px solid rgb(255 255 255 / .07); }
.code-bar span { width: 9px; height: 9px; border-radius: 50%; background: rgb(255 255 255 / .16); }
.code-bar code { margin-left: 8px; font: 400 0.75rem/1 var(--mono); color: #9BA1B0; }
.code pre { margin: 0; padding: 16px 16px 18px; font: 400 0.84rem/2 var(--mono); overflow-x: auto; }
.c-line { display: block; white-space: pre; }
.c-comment { color: #7F8596; }
.c-del { display: block; color: #F4B9BF; background: rgb(244 116 128 / .12); margin-inline: -16px; padding-inline: 16px; }
.c-add { display: block; color: #BDE5C3; background: rgb(110 200 130 / .12); margin-inline: -16px; padding-inline: 16px; }
.code-note { padding: 12px 16px 14px; font: 400 0.8125rem/1.5 var(--sans); color: #8E94A3; border-top: 1px solid rgb(255 255 255 / .07); }
.plot svg { width: 100%; height: auto; display: block; overflow: visible; }
.plot figcaption { margin-top: 6px; font: 400 0.8125rem/1.4 var(--sans); color: var(--faint); }
.plot .axis { stroke: var(--rule); stroke-width: 1; }
.plot .grid { stroke: var(--rule); stroke-width: 1; stroke-dasharray: 2 4; }
.plot .tick { font: 400 10px var(--sans); fill: var(--faint); }
.plot .lab { font: italic 400 13px var(--serif); fill: var(--muted); }
.plot .line { fill: none; stroke: var(--c); stroke-width: 1.8; stroke-linejoin: round; }
.plot .area { fill: var(--c); opacity: .09; }
.checks { display: grid; gap: 8px; }
.checks li { display: grid; grid-template-columns: max-content 1fr; gap: 10px; font: 400 0.78rem/1.5 var(--sans); color: var(--muted); }
.checks li span { text-transform: uppercase; letter-spacing: .06em; font-weight: 500; }
.check-fail span { color: var(--mark); }
.check-fail span::before { content: "✗ "; }
.check-pass span { color: var(--ink); }
.check-pass span::before { content: "✓ "; color: var(--mark); }

.gui-pair { display: grid; grid-template-columns: minmax(0, 1fr) 40px minmax(0, 1fr); gap: 14px; align-items: center; }
.plate-dark img { width: 100%; aspect-ratio: 16 / 10; object-fit: contain; background: var(--plate-dark); border-radius: 10px; padding: 8px; }
.gui-arrow { width: 40px; color: var(--c); }
@media (max-width: 560px) {
  .gui-pair { grid-template-columns: minmax(0, 1fr); }
  .gui-arrow { transform: rotate(90deg); justify-self: center; width: 28px; }
}

.tree { width: 100%; height: auto; overflow: visible; }
.tree .tree-db ellipse, .tree .tree-db path { fill: var(--sheet); stroke: var(--c); stroke-width: 1.4; }
.tree .tree-edge { fill: none; stroke: var(--c); stroke-width: 1.3; }
.tree .tree-faint { opacity: .35; }
.tree .tree-q { fill: var(--sheet); stroke: var(--c); stroke-width: 1.4; }
.tree .tree-off { opacity: .4; }
.tree .tree-h { fill: var(--c); }
.tree .tree-final { fill: var(--mark); }
.tree .tree-revs circle { fill: var(--sheet); stroke: var(--c); stroke-width: 1.4; }
.tree text { font-family: var(--sans); }
.tree .tree-glyph { font: 600 12px var(--sans); text-anchor: middle; fill: var(--c); }
.tree .tree-on { fill: #FFFFFF; }
.tree .tree-off-t { opacity: .5; }
.tree .tree-label { font-size: 10px; fill: var(--muted); text-anchor: middle; }
.tree .tree-left { text-anchor: start; }
.tree .tree-end { text-anchor: end; }
.tree .tree-strong { fill: var(--ink); font-weight: 500; }
.tree .tree-tick { font-size: 8.5px; fill: var(--muted); text-anchor: middle; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chips li { font: 400 0.75rem/1 var(--sans); padding: 6px 10px; border: 1px solid var(--rule); border-radius: 999px; color: var(--muted); }

@media (max-width: 900px) {
  .loop { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .loop-nav { display: none; }
  .scenes { gap: 80px; }
}

/* Disciplines */
.disciplines { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 40px 28px; }
.discipline { display: grid; gap: 14px; min-width: 0; }
.discipline-plate {
  position: relative; aspect-ratio: 4 / 3; border-radius: 12px; overflow: hidden;
  background: var(--plate); border: 1px solid var(--rule);
}
.discipline-plate img {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; padding: 14px;
  transition: opacity .45s ease, transform .6s ease;
}
.discipline-plate img.cover { object-fit: cover; padding: 0; }
.discipline-plate .alt { opacity: 0; }
.discipline:hover .discipline-plate .alt, .discipline:focus-within .discipline-plate .alt { opacity: 1; }
.discipline:hover .discipline-plate .main, .discipline:focus-within .discipline-plate .main { opacity: 0; }
.discipline h3 { font: italic 400 1.625rem/1.1 var(--serif); }
.discipline p { font-size: 0.9375rem; color: var(--muted); line-height: 1.5; }
@media (max-width: 760px) {
  .disciplines { grid-template-columns: minmax(0, 1fr); gap: 18px; }
  .discipline { grid-template-columns: 112px minmax(0, 1fr); align-items: center; gap: 16px; }
  .discipline-plate img { padding: 8px; }
  .discipline h3 { font-size: 1.375rem; margin-bottom: 4px; }
  .discipline p { font-size: 0.875rem; }
}

/* Principles */
.principles { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 40px; }
.principles article { display: grid; gap: 14px; align-content: start; padding-top: 22px; border-top: 1px solid var(--ink); }
.principles h3 { font: 400 1.75rem/1.1 var(--serif); }
.principles p { color: var(--muted); }
.mark-bad, .mark-good { position: relative; padding-left: 26px; font-size: 0.9375rem; line-height: 1.5; }
.mark-bad { color: var(--faint) !important; text-decoration: line-through; text-decoration-color: color-mix(in srgb, var(--mark) 60%, transparent); }
.mark-good { color: var(--ink) !important; }
.mark-bad::before, .mark-good::before {
  position: absolute; left: 0; top: -3px; font: italic 500 1.25rem/1 var(--serif); color: var(--mark); text-decoration: none;
}
.mark-bad::before { content: "✗"; }
.mark-good::before { content: "✓"; }
@media (max-width: 860px) { .principles { grid-template-columns: minmax(0, 1fr); gap: 32px; } }

/* Leaderboard */
.board { display: grid; gap: 18px; }
.board-bar { display: grid; gap: 10px; }
.tabrow { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 14px; }
.tabrow-label { width: 112px; font: 500 0.8125rem/1 var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--faint); }
.tabrow .status { margin-left: auto; }
@media (max-width: 760px) { .tabrow-label { width: 100%; } .tabrow .status { margin-left: 0; width: 100%; order: -1; margin-bottom: 6px; } }
.tabs { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.tab {
  display: inline-flex; align-items: baseline; gap: 6px; padding: 8px 12px; border-radius: 8px;
  border: 1px solid var(--rule); background: var(--sheet); color: var(--muted);
  font: 500 0.875rem/1 var(--sans); cursor: pointer;
}
.tab small { font: 400 0.8125rem/1 var(--sans); color: var(--faint); }
.tab[aria-selected="true"] { background: var(--ink); border-color: var(--ink); color: var(--on-ink); }
.tab[aria-selected="true"] small { color: color-mix(in srgb, var(--on-ink) 70%, transparent); }
.tab:hover { border-color: var(--ink); }
.status { display: inline-flex; align-items: center; gap: 8px; font: 500 var(--fs-xs)/1 var(--sans); letter-spacing: .06em; text-transform: uppercase; color: var(--accent); }
.pulse { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent) 50%, transparent); }
@media (prefers-reduced-motion: no-preference) { .pulse { animation: pulse 2.2s ease-out infinite; } }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent) 45%, transparent); } 100% { box-shadow: 0 0 0 10px transparent; } }
.table-scroll { overflow-x: auto; border: 1px solid var(--rule); border-radius: var(--radius); background: var(--sheet); }
.board-table { width: 100%; min-width: 680px; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.board-table th {
  padding: 12px 16px; text-align: right; border-bottom: 1px solid var(--rule);
  font: 500 0.8125rem/1.2 var(--sans); letter-spacing: .06em; text-transform: uppercase; color: var(--faint); white-space: nowrap;
}
.board-table th:first-child, .board-table td:first-child, .board-table th:nth-child(2) { text-align: left; }
.board-table th.rank, .board-table td.rank { width: 44px; text-align: left; color: var(--faint); }
.board-table td { padding: 12px 16px; text-align: right; border-bottom: 1px solid var(--rule); font-size: 0.9375rem; }
.board-table tr:last-child td { border-bottom: 0; }
.board-table td.model { text-align: left; white-space: nowrap; }
.board-table .model b { font-weight: 500; }
.board-table .model small { margin-left: 8px; font: 400 0.75rem/1 var(--sans); color: var(--faint); }
.board-table .open { margin-left: 8px; font: 500 0.8125rem/1 var(--sans); text-transform: uppercase; letter-spacing: .05em; padding: 3px 6px; border-radius: 4px; border: 1px solid var(--rule); color: var(--muted); }
.board-table tr.band td {
  padding: 9px 16px; background: color-mix(in srgb, var(--accent-wash) 60%, var(--sheet));
  font: 500 0.8125rem/1 var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--accent); text-align: left;
}
.await { display: inline-block; width: 46px; height: 7px; border-radius: 4px; vertical-align: middle;
  background: repeating-linear-gradient(90deg, var(--rule) 0 6px, transparent 6px 9px); opacity: .9; }
.board-note { font: 400 0.75rem/1.5 var(--sans); color: var(--faint); }

/* Evaluation */
.evaluation { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); gap: 72px; align-items: start; }
.evaluation > div { display: grid; gap: 18px; }
.evaluation h2 { font: 400 clamp(2rem, 3.6vw, 2.75rem)/1.1 var(--serif); letter-spacing: -0.015em; }
.evaluation > div p:not(.eyebrow) { color: var(--muted); font-size: 1.0625rem; max-width: 36em; }
.facts { margin: 0; border-bottom: 1px solid var(--rule); }
.facts > div { padding: 14px 0; border-top: 1px solid var(--rule); display: grid; gap: 4px; }
.facts dt { font-weight: 600; }
.facts dd { margin: 0; color: var(--muted); font-size: 0.9375rem; }
@media (max-width: 860px) { .evaluation { grid-template-columns: minmax(0, 1fr); gap: 36px; } }

/* Community orbit */
.community { overflow: hidden; }
.community-title { font: 400 clamp(2rem, 4.6vw, 3.5rem)/1.08 var(--serif) !important; letter-spacing: -0.02em; max-width: 16em; }
.community-title span { font-style: italic; color: var(--accent-ink); }
.orbit {
  position: relative; width: min(100%, 880px); aspect-ratio: 1; margin: 8px auto 0;
  container-type: inline-size;
}
.orbit::before {
  content: ""; position: absolute; inset: 18%; border-radius: 50%;
  background: radial-gradient(closest-side, color-mix(in srgb, var(--accent) 16%, transparent), transparent);
  filter: blur(6px); pointer-events: none;
}
.orbit-ring {
  position: absolute; left: 50%; top: 50%; aspect-ratio: 1; border-radius: 50%;
  border: 1px solid var(--rule); transform: translate(-50%, -50%);
}
.orbit-ring[data-ring="1"] { width: 47%; --dur: 140s; }
.orbit-ring[data-ring="2"] { width: 72.5%; --dur: 190s; border-style: dashed; }
.orbit-ring[data-ring="3"] { width: 98%; --dur: 240s; }
.orbit-spin { position: absolute; inset: 0; border-radius: 50%; }
.orbit-node { position: absolute; transform: translate(-50%, -50%); }
.orbit-node span { display: flex; flex-direction: column; align-items: center; gap: 6px; width: 98px; text-align: center; }
.orbit-node img { width: 48px; height: 48px; padding: 5px; object-fit: contain; background: #fff; border-radius: 12px; box-shadow: 0 4px 14px rgb(var(--shadow) / .08); }
.orbit-node small { font: 400 12px/1.3 var(--sans); color: var(--muted); }
@media (prefers-reduced-motion: no-preference) {
  .orbit-spin { animation: orbit-spin var(--dur) linear infinite; }
  .orbit-ring[data-ring="2"] .orbit-spin { animation-direction: reverse; }
  .orbit-node span { animation: orbit-spin var(--dur) linear infinite reverse; }
  .orbit-ring[data-ring="2"] .orbit-node span { animation-direction: normal; }
  .orbit:hover .orbit-spin, .orbit:hover .orbit-node span,
  .orbit:focus-within .orbit-spin, .orbit:focus-within .orbit-node span { animation-play-state: paused; }
}
@keyframes orbit-spin { to { rotate: 360deg; } }
.orbit-core {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  width: 31%; aspect-ratio: 1; border-radius: 50%;
  display: grid; place-content: center; justify-items: center; gap: 0.8em; text-align: center; padding: 6%;
  background: var(--sheet); border: 1px solid var(--rule);
  box-shadow: 0 0 0 10px color-mix(in srgb, var(--paper) 70%, transparent), 0 30px 60px -30px rgb(var(--shadow) / .45);
}
.orbit-welcome { font: italic 400 clamp(1.125rem, 3.6cqw, 2.125rem)/1.05 var(--serif); letter-spacing: -0.01em; }
.orbit-sub { font-size: clamp(0.8125rem, 1.45cqw, 0.8125rem); color: var(--muted); line-height: 1.4; }
.orbit-core .btn { white-space: nowrap; }
@container (max-width: 520px) {
  .orbit-sub { display: none; }
  .orbit-core .btn { height: 30px; padding-inline: 12px; font-size: 0.8125rem; }
  .orbit-core { gap: 0.5em; width: 36%; }
  .orbit-welcome { font-size: 1rem; }
  /* names move to the roster below; the orbit keeps its coloured planets */
  .orbit-node span { font-size: 0; gap: 0; padding: 0; border: 0; background: none; box-shadow: none; }
  .orbit-node span::before { width: 9px; height: 9px; box-shadow: 0 0 0 3px var(--paper); }
}
.g-institutes { --g: var(--mark); }
.g-international { --g: var(--cap-wd); }
.g-universities { --g: var(--accent); }

.roster { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(0, 2fr); gap: 32px; margin-top: 40px; padding-top: 28px; border-top: 1px solid var(--rule); }
.roster h4 { display: flex; align-items: center; gap: 8px; margin-bottom: 12px; font: 500 0.8125rem/1 var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--faint); }
.roster h4::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--g); }
.roster ul { display: grid; gap: 6px; font-size: 0.875rem; color: var(--muted); }
.roster .cols { columns: 2; column-gap: 32px; display: block; }
.roster .cols li { break-inside: avoid; margin-bottom: 6px; }
.roster .lead { color: var(--ink); }
@media (max-width: 760px) {
  .roster { grid-template-columns: minmax(0, 1fr); gap: 24px; }
}
@media (max-width: 480px) { .roster .cols { columns: 1; } }

/* Join */
.join { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.join article { display: grid; grid-template-rows: auto 1fr auto; gap: 14px; align-items: start; justify-items: start; padding: 4px 36px; }
.join article:first-child { padding-left: 0; }
.join article + article { border-left: 1px solid var(--rule); }
.join h3 { font: 400 1.75rem/1.1 var(--serif); }
.join p { color: var(--muted); }
.contact { font: 400 0.8125rem/1.5 var(--sans); color: var(--faint) !important; }
.contact a { color: var(--accent); }
@media (max-width: 860px) {
  .join { grid-template-columns: minmax(0, 1fr); gap: 32px; }
  .join article { padding: 0; }
  .join article + article { border-left: 0; border-top: 1px solid var(--rule); padding-top: 28px; }
}

/* Citation */
#cite .wrap { display: grid; gap: 24px; }
#cite .section-head { margin-bottom: 0; }
.bib { position: relative; min-width: 0; }
.bib pre {
  margin: 0; padding: 58px 22px 22px; overflow-x: auto;
  background: var(--sheet); border: 1px solid var(--rule); border-radius: var(--radius);
  font: 400 0.84rem/1.7 var(--mono); color: var(--ink);
}
.bib-copy { position: absolute; top: 12px; right: 12px; background: var(--sheet); }
.bib-copy.is-done { color: var(--accent); border-color: var(--accent); }

/* Footer: an exam cover strip */
.footer { padding-block: 40px 56px; border-top: 1px solid var(--rule); }
.footer .wrap { display: grid; gap: 22px; }
.cover { display: grid; grid-template-columns: 2fr repeat(3, minmax(0, 1fr)); margin: 0; border: 1px solid var(--ink); border-radius: 4px; }
.cover > div { padding: 10px 14px; min-width: 0; }
.cover > div + div { border-left: 1px solid var(--ink); }
.cover dt { font: 500 0.8125rem/1.2 var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--faint); }
.cover dd { margin: 4px 0 0; font: 500 0.9375rem/1.3 var(--serif); }
.footer-row { display: flex; flex-direction: column; align-items: flex-start; gap: 10px; font-size: 0.8125rem; color: var(--muted); }
.credits { max-width: 560px; }
.credits summary { cursor: pointer; font: 400 0.75rem/1.5 var(--sans); color: var(--muted); text-decoration: underline; text-underline-offset: 3px; }
.credits p { margin: 10px 0; }
.credits ul { display: grid; gap: 6px; font-size: 0.75rem; }
.credits a { color: var(--accent); }
@media (max-width: 760px) {
  .cover { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cover > div:first-child { grid-column: 1 / -1; }
  .cover > div + div { border-left: 0; border-top: 1px solid var(--ink); }
  .cover > div:nth-child(odd):not(:first-child) { border-left: 1px solid var(--ink); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

/* Shared multi-page surfaces */
:root { --glass: color-mix(in srgb, var(--sheet) 66%, transparent); --head-h: 88px; }
body { isolation: isolate; }
main { overflow: clip; }
button { font-family: var(--sans); }
video { display: block; width: 100%; }
[hidden] { display: none !important; }
.aurora { position: fixed; inset: 0; z-index: -1; overflow: hidden; pointer-events: none; }
.aurora span { position: absolute; width: 60vw; height: 65vh; border-radius: 50%; filter: blur(90px); opacity: .12; background: #a69cde; top: -15%; left: 40%; }
.aurora span:nth-child(2) { top: 40%; left: -30%; background: #7fbfc8; }
.aurora span:nth-child(3) { top: 85%; left: 65%; background: #c3a7cf; }
.glass, .masthead-pill, .btn:not(.btn-primary), .icon-btn { background: var(--glass); border: 1px solid color-mix(in srgb, var(--rule) 80%, transparent); backdrop-filter: blur(22px) saturate(1.25); -webkit-backdrop-filter: blur(22px) saturate(1.25); box-shadow: 0 8px 32px -20px rgb(var(--shadow) / .2), inset 0 1px 0 color-mix(in srgb, var(--sheet) 60%, transparent); }
.glass { border-radius: 20px; }
.glass-dark { color: #fff; background: rgb(16 18 28 / .55); border: 1px solid rgb(255 255 255 / .23); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px); }
.masthead { background: none; border: 0; backdrop-filter: none; -webkit-backdrop-filter: none; padding-top: 16px; }
.masthead-pill { display: flex; align-items: center; gap: 24px; min-height: 64px; border-radius: 40px; padding: 10px 18px; }
.masthead.is-scrolled .masthead-pill { box-shadow: 0 12px 32px -18px rgb(var(--shadow) / .3); }
.nav a[aria-current="page"] { color: var(--accent-ink); }
.brand-planet { fill: var(--accent); }
.menu { position: relative; display: none; }
.menu summary { list-style: none; }
.menu summary::-webkit-details-marker { display: none; }
.menu-panel { position: absolute; top: calc(100% + 14px); right: 0; min-width: 220px; padding: 10px; display: grid; background: color-mix(in srgb, var(--sheet) 94%, transparent); }
.menu-panel a { text-decoration: none; padding: 10px 14px; border-radius: 8px; }
.menu-panel a:hover, .menu-panel a[aria-current] { background: var(--accent-wash); color: var(--accent-ink); }
.btn, .icon-btn { border-radius: 999px; }
.soon { font-size: 13px; letter-spacing: 0; text-transform: none; }
.page-hero { padding-block: 56px 40px; }
.page-hero > .wrap { display: grid; gap: 20px; }
.page-title { font: 400 clamp(2.25rem, 4.8vw, 4rem)/1.08 var(--serif); letter-spacing: -.035em; max-width: 1000px; }
.page-title em, h2 em { color: var(--accent-ink); font-weight: 400; }
.page-hero .lede { max-width: 780px; }
.page-hero .page-hero-split { grid-template-columns: minmax(0, 1fr) 300px; align-items: end; gap: 48px; }
.page-hero-split > div { display: grid; gap: 24px; }
.section-tight { padding-top: 28px; }
.section-head { margin-bottom: 36px; }
.eyebrow { letter-spacing: .09em; line-height: 1.6; }
figcaption, .q-foot, .code-note, .board-note, .demo-footnote, .panel-note, .strip-note { font: 400 14px/1.65 var(--sans); color: var(--muted); }
figcaption { margin-top: 12px; }
.code-note { color: #b2b6c2; }
.credits, .credits ul, .credits summary { font-size: 14px; line-height: 1.7; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 12px 20px; }
.footer-nav a { text-decoration: none; }
.footer-contact { display: inline-block; margin-top: 6px; }
.footer-contact a { color: var(--accent-ink); text-decoration: underline; text-underline-offset: 3px; }
.org-link { color: inherit; text-decoration: underline; text-underline-offset: 3px; }
.org-link:hover { color: var(--accent-ink); }
.page-contact { margin-top: 26px; font-size: 12.5px; line-height: 1.7; color: var(--muted); }
.page-contact a { color: var(--accent-ink); text-decoration: underline; text-underline-offset: 3px; }
.footer-row { font-size: 14px; }
.cover { border-color: var(--rule); border-radius: 12px; }
.cover > div + div { border-color: var(--rule); }
.cover dd { font: 500 14px/1.6 var(--sans); }

/* Home */
.hero { padding-block: 48px 56px; }
.hero-grid { gap: 42px; grid-template-columns: minmax(0, 1.12fr) minmax(0, 1fr); }
.hero-title { font-size: clamp(3rem, 6vw, 5rem); }
.tally { padding: 18px; gap: 0; border-radius: 18px; }
.tally > div { padding: 0 12px 0 0; }
.tally dt { font-size: 13px; line-height: 1.5; letter-spacing: 0; text-transform: none; color: var(--muted); }
.tally dd { font-size: 32px; padding-top: 10px; }
.ring { width: 100%; }
.ring-caps { font-family: var(--sans); font-size: 3.2px; letter-spacing: .03px; }
.ring-core-num { font-size: clamp(1.6rem, 8cqw, 2.8rem); }
.ring-core-cap { font: 400 13px/1.45 var(--sans); text-transform: none; letter-spacing: 0; color: var(--muted); }
.ring-sweep { transform-origin: 50% 50%; }
.ring-lines .ring-sweep-head { fill: var(--accent); stroke: none; }
.ring-plate { width: 19%; }
.ring-plate span { display: none; }
.lines { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.line-card { display: flex; flex-direction: column; text-decoration: none; border: 1px solid var(--rule); border-radius: 24px; overflow: hidden; background: var(--glass); transition: transform .3s, box-shadow .3s; }
.line-media { position: relative; display: block; aspect-ratio: 16 / 10; background: #11131d; overflow: hidden; }
.line-media video { width: 100%; height: 100%; object-fit: cover; }
.line-badge { position: absolute; bottom: 18px; left: 18px; border-radius: 999px; padding: 7px 14px; font-size: 13px; }
.line-body { display: grid; gap: 16px; padding: 30px; flex: 1; }
.line-kicker, .explore-kicker { color: var(--accent); font-size: 13px; font-weight: 500; letter-spacing: .07em; text-transform: uppercase; }
.line-title { font: 400 clamp(1.8rem, 3vw, 2.35rem)/1.13 var(--serif); }
.line-text, .explore-text { color: var(--muted); }
.line-go { display: flex; justify-content: space-between; align-items: end; margin-top: auto; padding-top: 10px; font-size: 14px; font-weight: 500; }
.line-go i { font-size: 24px; font-style: normal; }
.line-media-light { display: grid; place-items: center; background: radial-gradient(ellipse at 15% 10%, var(--accent-wash), transparent), var(--glass); padding: 30px; }
.cap-list { position: relative; display: grid; gap: 15px; width: 100%; z-index: 1; }
.cap-list > span { display: flex; justify-content: space-between; gap: 15px; border-bottom: 1px solid var(--rule); padding: 8px 0; font-size: 15px; }
.cap-list > span::before { content: ''; border-radius: 50%; background: var(--c); width: 8px; height: 8px; margin-top: 7px; flex-shrink: 0; }
.cap-list b { margin-left: auto; color: var(--muted); font-variant-numeric: tabular-nums; }
.cap-orbit { position: absolute; width: 240px; height: 240px; border: 1px solid var(--rule); border-radius: 50%; opacity: .45; }
.cap-orbit i { position: absolute; left: 50%; top: 50%; width: 12px; height: 12px; border-radius: 50%; background: var(--c); transform: rotate(var(--a)) translateY(-120px); }
.feature-film figcaption { max-width: 760px; }
.video-player { position: relative; border-radius: 22px; background: #10131d; overflow: hidden; }
.video-player video { aspect-ratio: 16 / 9; object-fit: contain; }
.video-play { position: absolute; left: 28px; bottom: 28px; display: flex; align-items: center; gap: 15px; border-radius: 50px; padding: 12px 22px 12px 12px; text-align: left; cursor: pointer; font-size: 15px; }
.video-play small { display: block; color: #d7d9e4; font-size: 13px; margin-top: 3px; }
.play-symbol { display: grid; place-items: center; width: 42px; height: 42px; border: 1px solid rgb(255 255 255 / .4); border-radius: 50%; padding-left: 3px; }
.video-player.is-playing .video-play, .video-player.is-playing .reel-caption { display: none; }
.institution-section { overflow: hidden; }
.institution-marquee { display: grid; gap: 16px; mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent); }
.marquee-row { display: flex; width: max-content; }
.marquee-group { display: flex; gap: 16px; padding-right: 16px; }
.institution-chip { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px; width: 146px; padding: 18px 14px 14px; border-radius: 16px; }
.institution-chip img { width: 64px; height: 64px; padding: 6px; object-fit: contain; background: #fff; border-radius: 12px; }
.institution-chip span { font: 400 12px/1.4 var(--sans); color: var(--muted); text-align: center; }
.institution-link { padding-top: 30px; }
.text-link { font-size: 14px; text-underline-offset: 5px; }
.explore { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.explore-card { display: grid; grid-template-columns: 1fr 110px; gap: 15px 25px; padding: 30px; text-decoration: none; transition: transform .25s; }
.explore-title { font: 400 32px/1.15 var(--serif); }
.explore-text { grid-column: 1 / -1; }
.explore-art { grid-column: 2; grid-row: 1 / 3; align-self: center; }
.explore-go { font-size: 24px; }
.explore-bars { display: grid; gap: 9px; }
.explore-bars i { display: block; width: var(--w); height: 10px; background: var(--accent); opacity: .55; border-radius: 4px; }
.explore-orbit { height: 100px; position: relative; border: 1px solid var(--rule); border-radius: 50%; }
.explore-orbit i { position: absolute; inset: 20%; border: 1px solid var(--accent); border-radius: 50%; }
.explore-orbit i + i { inset: 40%; background: var(--accent-wash); }
.explore-orbit b { position: absolute; top: 12%; left: 12%; height: 12px; width: 12px; background: var(--accent); border-radius: 50%; }
.bib pre { background: transparent; border: 0; }

/* Benchmark */
.index-chips, .stat-chips { display: flex; gap: 10px; flex-wrap: wrap; margin: 8px 0 0; }
.chip { display: inline-flex; align-items: center; gap: 9px; padding: 9px 14px; border-radius: 999px; font-size: 13px; text-decoration: none; }
.chip i { height: 7px; width: 7px; background: var(--c); border-radius: 50%; }
.loop { grid-template-columns: 250px minmax(0, 1fr); gap: 44px; }
.loop-nav { padding: 14px 18px 20px; border-radius: 18px; }
.loop-group { letter-spacing: .04em; color: var(--muted); line-height: 1.5; }
.loop-link { font-size: 14px; gap: 7px; padding-block: 10px; }
.loop-link .n { font-size: 13px; }
.loop-link::before { left: -19px; }
.loop-progress { height: 2px; background: var(--rule); border-radius: 2px; }
.loop-progress i { display: block; width: 20%; height: 100%; background: var(--accent); transition: width .3s; }
.scene-kicker { letter-spacing: .04em; line-height: 1.5; }
.scene-ask { font-size: 17px; color: var(--muted); }
.filmstrip figcaption, .plate figcaption { font-size: 14px; line-height: 1.6; }
.plot figcaption { font-size: 14px; line-height: 1.6; color: var(--muted); }
.plot .tick { fill: var(--muted); font: 400 13px var(--sans); }
.checks li { display: block; font-size: 14px; line-height: 1.6; }
.checks li span { display: block; letter-spacing: 0; text-transform: none; }
.tree .tree-label { font-size: 13px; }
.tree .tree-tick { font-size: 10px; }
.chips li { font-size: 13px; line-height: 1.4; }
.strip-head { display: flex; justify-content: space-between; align-items: center; gap: 20px; margin-bottom: 20px; }
.strip-note { max-width: 470px; }
.discipline-strip { display: grid; grid-template-columns: repeat(9, minmax(0, 1fr)); gap: 14px; }
.discipline-strip img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; background: var(--plate); border-radius: 10px; opacity: .8; }
.discipline-strip span { display: block; font-size: 13px; color: var(--muted); margin-top: 9px; }

/* Tasks: one inspectable case */
.demo-status { display: flex; align-items: start; gap: 14px; padding: 20px 24px; margin-bottom: 28px; font-size: 14px; line-height: 1.8; }
.status-dot { width: 8px; height: 8px; flex-shrink: 0; background: #bb8140; border-radius: 50%; margin-top: 8px; }
.demo-status p { color: var(--muted); }.demo-status b { color: var(--ink); }
.demo-panel { padding: 32px; margin-bottom: 24px; }
.demo-heading { display: flex; gap: 14px; align-items: center; margin-bottom: 25px; }
.demo-heading h3 { font: 400 28px/1.15 var(--serif); }
.step-n { display: inline-grid; place-items: center; height: 35px; min-width: 35px; border-radius: 50%; color: var(--accent); background: var(--accent-wash); border: 1px solid var(--rule); font-size: 14px; }
.panel-note { margin-left: auto; }
.demo-background { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: start; }
.demo-copy { display: grid; gap: 20px; }
.demo-copy p, .demo-panel > p, .demo-list, .input-grid p, .environment-flow p { color: var(--muted); font-size: 15px; line-height: 1.75; }
.demo-copy blockquote { margin: 0; padding-left: 20px; border-left: 2px solid var(--accent); font: 400 25px/1.35 var(--serif); }
.demo-background .video-play { left: 16px; bottom: 16px; }
.input-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 24px; }
.input-icon { display: block; font-size: 32px; color: var(--accent); margin-bottom: 10px; }
.input-grid h4, .environment-flow h4 { font-size: 16px; font-weight: 500; margin-bottom: 10px; }
.environment-flow { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 28px; }
.environment-flow li { position: relative; border: 1px solid var(--rule); border-radius: 14px; padding: 20px; background: color-mix(in srgb, var(--sheet) 40%, transparent); }
.environment-flow li + li::before { content: '→'; position: absolute; left: -24px; top: 48%; color: var(--accent); }
.connection { display: inline-block; font-size: 13px; color: var(--muted); line-height: 1.4; margin-bottom: 16px; }
.connected { color: var(--accent-ink); }.connected::before { content: '●'; font-size: 8px; margin-right: 6px; }
.environment-flow .environment-pending { border-style: dashed; background: transparent; }
.demo-footnote { padding-top: 18px; margin-top: 18px; border-top: 1px solid var(--rule); }
.demo-pair, .demo-results { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.demo-list { display: grid; gap: 10px; margin-top: 16px; }.demo-list li { padding-left: 16px; border-left: 2px solid var(--rule); }
.result-chart, .feedback { padding: 32px; }
.result-chart h3, .feedback h3 { font: 400 32px/1.2 var(--serif); margin-top: 16px; }
.result-delta { font: 400 84px/1.1 var(--serif); color: var(--accent-ink); margin-block: 22px; }.result-delta span { font-size: 42px; }
.bar-chart { display: grid; gap: 20px; margin-block: 28px; }
.bar-row { display: grid; grid-template-columns: 126px 1fr 32px; align-items: center; gap: 12px; font-size: 14px; }
.bar-track { background: var(--accent-wash); border-radius: 5px; overflow: hidden; }.bar-track i { display: block; width: var(--bar); height: 30px; background: color-mix(in srgb, var(--muted) 55%, var(--sheet)); }.intervention .bar-track i { background: var(--accent); }
.feedback-list { display: grid; gap: 25px; margin-top: 30px; }.feedback-list li { display: flex; gap: 16px; padding-top: 22px; border-top: 1px solid var(--rule); }.feedback-list li > span { color: var(--accent); font-size: 14px; }.feedback-list h4 { font-size: 16px; font-weight: 500; line-height: 1.5; }.feedback-list p { color: var(--muted); font-size: 15px; margin-top: 10px; }
.run-evidence { padding: 20px 26px; margin-top: 24px; }.run-evidence summary { cursor: pointer; font-size: 14px; }.evidence-grid { display: grid; grid-template-columns: 1fr; gap: 24px; margin-top: 24px; }.evidence-grid img { width: 100%; height: auto; border-radius: 10px; }
.steps { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 26px; }.steps li { border-top: 1px solid var(--rule); padding-top: 22px; }.steps b { display: block; font: 400 25px/1.2 var(--serif); margin-block: 20px 12px; }.steps p { color: var(--muted); font-size: 15px; }
.reel-caption { position: absolute; top: 24px; left: 24px; max-width: 470px; padding: 20px 24px; border-radius: 16px; }.reel-field { font-size: 13px; color: #d7d9e4; margin-bottom: 6px; }.reel-caption h3 { font: 400 30px/1.2 var(--serif); }.reel-caption > p:last-child { font-size: 14px; line-height: 1.6; margin-top: 10px; color: #e4e5eb; }
.reel-tabs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-top: 18px; }.reel-tab { border: 1px solid var(--rule); border-radius: 12px; padding: 18px; background: var(--glass); color: var(--ink); text-align: left; cursor: pointer; display: grid; gap: 8px; }.reel-tab[aria-selected="true"] { border-color: var(--accent); background: var(--accent-wash); }.reel-tab-field { font-size: 13px; color: var(--accent); }.reel-tab-title { font-size: 15px; line-height: 1.5; }.reel-tab small { font-size: 13px; color: var(--muted); }
.verify { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }.verify article { padding: 30px; }.verify svg { width: 45px; height: 45px; fill: none; stroke: var(--accent); stroke-width: 1.5; margin-bottom: 24px; }.verify .fill { fill: var(--accent); }.verify h3 { font: 400 27px/1.2 var(--serif); margin-bottom: 16px; }.verify p { color: var(--muted); font-size: 15px; }

/* Results and community */
.status-card { padding: 22px; display: flex; gap: 14px; align-items: start; font-size: 14px; color: var(--muted); }.status-card b { display: block; margin-bottom: 8px; color: var(--ink); }.status-card .pulse { margin-top: 7px; flex-shrink: 0; }
.board-bar { padding: 22px; }.tabrow-label { width: 125px; line-height: 1.5; letter-spacing: .03em; color: var(--muted); }.tab small { font-size: 13px; }.board-table th { color: var(--muted); font-size: 13px; letter-spacing: .02em; }.board-table .model small { font-size: 13px; color: var(--muted); }.board-table .open { font-size: 13px; text-transform: none; letter-spacing: 0; }.board-note { color: var(--muted); }
.stat-chips > div { padding: 18px 25px; min-width: 180px; }.stat-chips dt { font-size: 14px; color: var(--muted); }.stat-chips dd { margin: 6px 0 0; font: 400 36px/1.2 var(--serif); }
.orbit { width: min(86%, 880px); margin-bottom: 70px; }.orbit-core { padding: 4%; border-radius: 50%; }.orbit-sub { font-size: 13px; }.roster h4 { font-size: 13px; line-height: 1.6; letter-spacing: .04em; color: var(--muted); }
.join-film { position: relative; border-radius: 24px; overflow: hidden; margin-bottom: 32px; background: #10131d; }.join-video { width: 100%; height: 430px; object-fit: cover; opacity: .6; }.join-film-copy { position: absolute; inset: 0; padding: 48px; display: flex; flex-direction: column; justify-content: end; align-items: start; gap: 18px; color: #fff; background: linear-gradient(transparent, rgb(10 12 20 / .75)); }.join-film-copy h2 { max-width: 650px; font: 400 clamp(2rem, 4vw, 3.5rem)/1.1 var(--serif); }.join-film-copy > p:last-child { max-width: 580px; color: #e0e2e9; }.eyebrow-light { color: #d4cafa; }
.join { gap: 24px; }.join article, .join article:first-child { padding: 28px; }.contact { font: 400 14px/1.6 var(--sans); }

/* Motion only when the system permits it. */
.split-word { display: inline-block; white-space: nowrap; }.split-char { display: inline-block; }
@keyframes enter { from { opacity: 0; transform: translateY(22px); } to { opacity: 1; transform: translateY(0); } }
@keyframes drift { to { transform: translate(12%, 15%) scale(1.15); } }
@keyframes marquee { to { transform: translateX(-50%); } }
@keyframes page-fade { from { opacity: 0; } to { opacity: 1; } }
@view-transition { navigation: auto; }
@media (prefers-reduced-motion: no-preference) {
  .aurora span { animation: drift 24s ease-in-out infinite alternate; }.aurora span:nth-child(2) { animation-delay: -10s; }.aurora span:nth-child(3) { animation-delay: -18s; }
  .split-char { animation: enter .8s both; animation-delay: var(--d); }.rise { animation: enter .9s both; animation-delay: var(--d, 0s); }
  .js .reveal { opacity: 0; transform: translateY(26px); transition: opacity .75s, transform .75s; }.js .reveal.is-visible { opacity: 1; transform: none; }
  .ring-sweep { animation: orbit-spin 35s linear infinite; }.ring-mid { transform-origin: center; animation: orbit-spin 100s linear infinite; }
  .ring-plates { animation: orbit-spin 120s linear infinite; }
  .ring-plate img { animation: orbit-spin 120s linear infinite reverse; }
  .marquee-row { animation: marquee 85s linear infinite; }.marquee-row:nth-child(2) { animation-direction: reverse; animation-duration: 95s; }.institution-marquee:hover .marquee-row { animation-play-state: paused; }
  .line-card:hover, .explore-card:hover { transform: translateY(-6px); box-shadow: 0 20px 35px -28px rgb(var(--shadow) / .5); }
  main { animation: page-fade .4s both; }::view-transition-old(root) { animation: page-fade .2s reverse both; }::view-transition-new(root) { animation: page-fade .25s both; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }.reveal, .rise, .split-char { opacity: 1; transform: none; }
  ::view-transition-old(root), ::view-transition-new(root) { animation: none !important; }
  .institution-marquee { overflow-x: auto; mask-image: none; margin-inline: 16px; }.marquee-group[aria-hidden] { display: none; }
}
@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; }.ring { width: min(100%, 500px); }.hero-copy { max-width: 750px; }.menu { display: block; }
  .loop { grid-template-columns: 1fr; }.loop-nav { display: none; }.page-hero .page-hero-split { grid-template-columns: 1fr; }.status-card { max-width: 420px; }
  .input-grid, .environment-flow { grid-template-columns: 1fr 1fr; }.environment-flow li:nth-child(3)::before { display: none; }.reel-tabs { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(3, 1fr); }.discipline-strip { grid-template-columns: repeat(5, 1fr); }
}
@media (max-width: 760px) {
  .page-hero { padding-block: 40px 32px; }.hero { padding-block: 36px; }.hero-title { font-size: clamp(3rem, 10vw, 4rem); }.hero-grid { gap: 32px; }
  .lines, .explore, .demo-background, .demo-pair, .demo-results, .verify { grid-template-columns: 1fr; }.line-media { aspect-ratio: 16 / 10; }.section-tight { padding-top: 20px; }
  .section-head { margin-bottom: 28px; }.strip-head { display: grid; }.strip-note { max-width: none; }.discipline-strip { display: flex; overflow-x: auto; padding-bottom: 12px; }.discipline-strip li { flex: 0 0 118px; }
  .stat-chips > div { min-width: 0; flex: 1 1 130px; padding: 16px; }.join-video { height: 470px; }.join-film-copy { padding: 28px; }
  .tally { grid-template-columns: repeat(4, minmax(0, 1fr)); }.tally > div:first-child { grid-column: auto; }.tally > div + div { border-top: 0; }.tally > div { padding: 0 10px !important; }.tally > div:first-child { padding-left: 0 !important; }.tally > div + div { border-left: 1px solid var(--rule) !important; }.tally dt { font-size: 13px; }.tally dd { font-size: 28px; }

  .board-bar { padding: 16px; }.tabrow-label { width: 100%; }.tab { font-size: 13px; padding: 9px 10px; }
}
@media (max-width: 560px) {
  .masthead { padding-top: 10px; }.masthead-pill { padding: 8px 12px; gap: 10px; min-height: 58px; }.brand { gap: 6px; }.brand-name { font-size: 17px; }.brand-mark { width: 22px; }.masthead-tools { gap: 6px; }.hide-sm { display: none; }
  .page-title { font-size: 36px; }.lede { font-size: 17px; line-height: 1.7; }.page-hero > .wrap { gap: 16px; }.actions { gap: 8px; }.actions .btn { font-size: 14px; padding-inline: 14px; }
  .tally { grid-template-columns: 1fr 1fr; gap: 18px 0; }.tally > div { padding: 0 16px !important; }.tally > div:nth-child(odd) { padding-left: 0 !important; border-left: 0 !important; }.tally dd { font-size: 32px; }
  .ring-caps { font-size: 3.6px; }.ring-core-cap { font-size: 13px; }.ring { margin-block: 10px; }
  .line-body, .explore-card { padding: 24px; }.line-media-light { padding: 22px; }.cap-list { gap: 9px; }.cap-list > span { font-size: 13px; }.line-badge { font-size: 13px; }
  .video-play { left: 14px; bottom: 14px; padding: 9px 16px 9px 9px; gap: 10px; font-size: 14px; }.play-symbol { width: 34px; height: 34px; }.video-player { border-radius: 15px; }.video-play small { font-size: 13px; }
  .institution-chip { padding: 13px 18px; font-size: 14px; }.institution-marquee { gap: 10px; }.marquee-group { gap: 10px; padding-right: 10px; }
  .demo-panel, .result-chart, .feedback { padding: 22px; }.demo-heading { flex-wrap: wrap; gap: 10px; }.demo-heading h3 { font-size: 25px; }.panel-note { margin-left: 45px; width: 100%; }.demo-status { padding: 18px; }.demo-status b { line-height: 1.7; }
  .input-grid, .environment-flow { grid-template-columns: 1fr; gap: 20px; }.input-grid > div + div { border-top: 1px solid var(--rule); padding-top: 18px; }.environment-flow li + li::before { content: '↓'; left: 50%; top: -25px; }.environment-flow li:nth-child(3)::before { display: block; }
  .bar-row { grid-template-columns: 108px 1fr 28px; font-size: 13px; gap: 8px; }.result-delta { font-size: 72px; }.demo-copy blockquote { font-size: 23px; }
  .steps { grid-template-columns: 1fr; gap: 22px; }.steps li { display: grid; grid-template-columns: 35px 1fr; gap: 12px 16px; }.steps b { margin: 4px 0 0; }.steps p { grid-column: 2; }
  .reel-caption { position: static; margin: 0; border-radius: 0; border-width: 1px 0 0; padding: 20px; }.reel-caption h3 { font-size: 25px; }.reel-screen .video-play { top: 16px; bottom: auto; }.reel-tab { padding: 14px; }
  .explore-card { grid-template-columns: 1fr 80px; }.explore-orbit { height: 80px; }.explore-title { font-size: 28px; }.run-evidence { padding: 18px; }.orbit { width: 90%; margin-bottom: 40px; }
  .cover > div:first-child { grid-column: 1 / -1; }.cover > div:last-child { grid-column: 1 / -1; border-left: 0; }.cover dt { font-size: 13px; }.footer-row { gap: 20px; }
}

/* ---------------------------------------------------------------------------
   Three core features and the six-capability loop
   --------------------------------------------------------------------------- */
.cap-icon { width: 100%; height: 100%; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.badge-building {
  display: inline-flex; align-items: center; gap: 7px; width: max-content; padding: 5px 11px; border-radius: 999px;
  font: 500 12.5px/1.3 var(--sans); color: color-mix(in srgb, var(--cap-wl) 80%, var(--ink));
  background: color-mix(in srgb, var(--cap-wl) 13%, var(--sheet)); border: 1px solid color-mix(in srgb, var(--cap-wl) 35%, transparent);
}
.badge-building::before { content: ""; flex-shrink: 0; width: 8px; height: 8px; border-radius: 50%; border: 1.5px solid currentColor; background: linear-gradient(90deg, currentColor 50%, transparent 50%); }

/* The ∞ loop map */
.loopmap { position: relative; margin: 0; container-type: inline-size; }
.lm-stage { position: relative; aspect-ratio: 1000 / 400; }
.lm-svg { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.lm-ribbon { fill: none; stroke: color-mix(in srgb, var(--rule) 75%, var(--sheet)); stroke-width: 30; }
.lm-seg { fill: none; stroke: var(--c); stroke-width: 30; stroke-linecap: round; }
.lm-thread { fill: none; stroke: var(--thread); stroke-width: 2; stroke-dasharray: 1 9; stroke-linecap: round; }
.lm-disc-ring { fill: var(--sheet); stroke: var(--rule); stroke-width: 1.2; }
.lm-disc-name { font: 500 10.5px var(--sans); fill: var(--muted); text-anchor: middle; }
.lm-place { font: 600 10.5px var(--sans); letter-spacing: .34em; fill: var(--faint); text-anchor: middle; }
.lm-lead { fill: none; stroke: var(--thread); stroke-width: 1.2; stroke-dasharray: 3 3; }
.lm-lead-hd { stroke: var(--cap-hd); }
.lm-node > circle { fill: var(--sheet); stroke: var(--c); stroke-width: 2.5; }
.lm-node g * { fill: none; stroke: var(--c); stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }
.lm-hub > circle { fill: var(--cap-hd); stroke: color-mix(in srgb, var(--cap-hd) 30%, transparent); stroke-width: 10; paint-order: stroke; }
.lm-hub g * { fill: none; stroke: #fff; stroke-width: 1.4; stroke-linecap: round; stroke-linejoin: round; }
.lm-hub text { font: 600 8px var(--sans); letter-spacing: .14em; fill: #fff; text-anchor: middle; }
.lm-agent circle { fill: var(--thread); }
.lm-agent .lm-agent-glow { opacity: .28; }
.lm-label {
  position: absolute; transform: translate(-50%, -100%); display: grid; justify-items: center; gap: 1px;
  text-align: center; text-decoration: none; color: var(--ink); white-space: nowrap;
}
.lm-label.lm-bottom { transform: translate(-50%, 0); }
.lm-verb { font: 600 11.5px/1.3 var(--sans); letter-spacing: .12em; text-transform: uppercase; color: var(--c); }
.lm-label b { font: 400 clamp(15px, 1.8cqw, 21px)/1.2 var(--serif); }
.lm-label small { font: 400 12.5px/1.4 var(--sans); color: var(--muted); }
.lm-label:hover b, .lm-callout:hover b { text-decoration: underline; text-decoration-color: var(--c); text-underline-offset: 4px; }
.lm-notes > * { position: absolute; top: 50%; transform: translateY(-50%); width: 16.6%; }
.lm-callout-left { right: 84.2%; }
.lm-callout-right { left: 84.2%; }
.lm-callout {
  display: grid; gap: 8px; justify-items: start; padding: 16px 18px 18px; border-radius: 18px; text-decoration: none; color: var(--ink);
  background: color-mix(in srgb, var(--c) 7%, var(--glass)); border: 1px solid color-mix(in srgb, var(--c) 38%, var(--rule));
  box-shadow: 0 16px 36px -28px rgb(var(--shadow) / .45);
}
.lm-callout b { font: 400 21px/1.15 var(--serif); }
.lm-callout > span:not(.lm-callout-head):not(.badge-building) { font-size: 13.5px; line-height: 1.5; color: var(--muted); }
.lm-callout-head { display: flex; align-items: center; gap: 9px; }
.lm-callout-icon { display: grid; place-items: center; width: 30px; height: 30px; padding: 6px; border-radius: 50%; color: #fff; background: var(--c); }
.lm-callout-agent { position: relative; background: color-mix(in srgb, var(--thread) 18%, var(--sheet)); }
.lm-callout-agent::after { content: ""; width: 11px; height: 11px; border-radius: 50%; background: var(--thread); box-shadow: 0 0 0 5px color-mix(in srgb, var(--thread) 25%, transparent); }
.lm-legend { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px 32px; margin-top: 22px; font-size: 13.5px; color: var(--muted); }
.lm-legend > span { display: inline-flex; align-items: center; gap: 10px; }
.lm-legend b { color: var(--ink); font-weight: 500; }
.lm-legend i { flex-shrink: 0; }
.lg-segs { width: 46px; height: 9px; border-radius: 5px; background: linear-gradient(90deg, var(--cap-wd) 0 30%, transparent 30% 36%, var(--cap-wl) 36% 64%, transparent 64% 70%, var(--cap-ep) 70%); }
.lg-thread { width: 40px; height: 12px; background: radial-gradient(circle, var(--thread) 0 4px, transparent 5px) center / 12px 12px no-repeat, linear-gradient(var(--thread), var(--thread)) center / 100% 2px no-repeat; }
.lg-discs { width: 36px; height: 14px; background: radial-gradient(circle at 7px 7px, transparent 4.5px, var(--cap-wd) 5px 6.5px, transparent 7px), radial-gradient(circle at 18px 7px, transparent 4.5px, var(--cap-wl) 5px 6.5px, transparent 7px), radial-gradient(circle at 29px 7px, transparent 4.5px, var(--cap-ep) 5px 6.5px, transparent 7px); }
@media (prefers-reduced-motion: no-preference) {
  .lm-thread { animation: lm-flow 2.4s linear infinite; }
}
@keyframes lm-flow { to { stroke-dashoffset: -20; } }
@container (max-width: 900px) {
  .loopmap { overflow: hidden; }
  .lm-stage { width: 150%; margin-left: -24.75%; }
  .lm-notes { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 18px; }
  .lm-notes > * { position: static; transform: none; width: auto; }
  .lm-label small { display: none; }
}
@container (max-width: 640px) {
  .lm-disc-name { display: none; }
  .lm-label b { display: none; }
  .lm-verb { font-size: 11px; letter-spacing: .08em; }
  .lm-notes { grid-template-columns: 1fr; }
  .lm-legend { justify-content: start; }
}

/* Home hero */
.hero-top { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 32px 56px; align-items: center; }
.hero-side { display: grid; gap: 18px; padding-bottom: 10px; }
.hero-question { font: 400 clamp(1.75rem, 3vw, 2.25rem)/1.12 var(--serif); letter-spacing: -.02em; text-wrap: balance; }
.hero-question em { color: var(--accent-ink); }
.hero-side .lede { font-size: 17px; }
.hero-map, .bench-map { width: min(1320px, calc(100vw - 48px)); margin-left: 50%; translate: -50% 0; }
.hero-map { margin-block: 56px 36px; }
@media (max-width: 960px) { .hero-top { grid-template-columns: minmax(0, 1fr); } .hero-map { margin-block: 40px 28px; } }

/* Three core features */
.features { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.features .line-body { padding: 26px; gap: 14px; }
.features .line-title { font-size: clamp(1.6rem, 2.3vw, 2rem); }
.features .line-text { font-size: 15px; line-height: 1.65; }
.features .line-badge { font-size: 12.5px; }
.wl-media { display: grid; align-content: center; gap: 14px; padding: 22px 22px 54px; background: radial-gradient(ellipse at 80% 0%, color-mix(in srgb, var(--cap-wl) 16%, transparent), transparent 70%), color-mix(in srgb, var(--cap-wl) 5%, var(--sheet)); }
.wl-media .line-badge { left: 22px; bottom: 16px; }
.wl-flow { display: grid; grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr); align-items: center; gap: 8px; }
.wl-protocol, .wl-readout { display: grid; gap: 5px; padding: 11px 12px; border-radius: 12px; background: var(--sheet); border: 1px solid var(--rule); min-width: 0; }
.wl-protocol small, .wl-readout small { font-size: 11.5px; letter-spacing: .05em; text-transform: uppercase; color: var(--faint); }
.wl-protocol code { font: 400 11.5px/1.45 var(--mono); color: var(--ink); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.wl-arrow { color: var(--cap-wl); font-size: 20px; }
.wl-readout svg { width: 100%; height: auto; overflow: visible; }
.wl-axis { fill: none; stroke: var(--faint); stroke-width: 1; }
.wl-crit { fill: none; stroke: var(--mark); stroke-width: 1; stroke-dasharray: 3 3; }
.wl-fill { fill: color-mix(in srgb, var(--cap-wl) 16%, transparent); }
.wl-curve { fill: none; stroke: var(--cap-wl); stroke-width: 2; }
.wl-readout text { font: 400 9px var(--sans); fill: var(--mark); text-anchor: end; }
.wl-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.wl-tags span { font-size: 12px; padding: 4px 10px; border-radius: 999px; border: 1px solid color-mix(in srgb, var(--cap-wl) 35%, var(--rule)); background: var(--sheet); color: var(--muted); }
.cap-tiles { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; width: 100%; }
.cap-tiles > span { display: grid; justify-items: start; gap: 2px; padding: 11px 12px; border-radius: 12px; background: var(--sheet); border: 1px solid var(--rule); font: 400 13px/1.3 var(--sans); color: var(--ink); min-width: 0; }
.cap-tiles i { display: grid; place-items: center; width: 28px; height: 28px; padding: 5px; margin-bottom: 6px; border-radius: 50%; color: #fff; background: var(--c); }
.cap-tiles small { font: 600 10.5px/1.3 var(--sans); letter-spacing: .1em; text-transform: uppercase; color: var(--c); }
@media (max-width: 1080px) { .features { grid-template-columns: minmax(0, 1fr); max-width: 680px; } }
@media (max-width: 1080px) { .features .wl-media { aspect-ratio: auto; } }

/* The real world as judge */
.paper-world { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.paper-world article { display: grid; gap: 12px; align-content: start; padding: 24px; border-radius: 18px; background: var(--sheet); border: 1px solid var(--rule); }
.paper-world h3 { font: 400 24px/1.2 var(--serif); }
.pw-paper, .pw-world { position: relative; padding-left: 30px; font-size: 15px; line-height: 1.5; }
.pw-paper span, .pw-world span { display: block; font: 500 12px/1.4 var(--sans); letter-spacing: .06em; text-transform: uppercase; color: var(--faint); }
.pw-paper::before, .pw-world::before { position: absolute; left: 0; top: 2px; font: 400 21px/1 var(--serif); }
.pw-paper::before { content: "✓"; color: var(--faint); }
.pw-paper { color: var(--muted); }
.pw-world::before { content: "✗"; color: var(--mark); }
.pw-world span { color: var(--mark); }
.tiers { position: relative; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; align-items: end; margin-top: 56px; }
.tiers-axis { grid-column: 1 / -1; display: flex; align-items: center; gap: 14px; font: 500 13px/1.4 var(--sans); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.tiers-axis i { flex: 1; height: 2px; background: linear-gradient(90deg, var(--cap-ep), var(--thread), var(--cap-wl)); position: relative; border-radius: 2px; }
.tiers-axis i::after { content: ""; position: absolute; right: -2px; top: -5px; border: 6px solid transparent; border-left: 9px solid var(--cap-wl); border-right: 0; }
.tier {
  position: relative; display: grid; gap: 10px; align-content: start; padding: 26px 24px 24px;
  min-height: calc(250px + var(--h) * 34px); border-radius: 18px; background: var(--sheet); border: 1px solid var(--rule);
  border-top: 4px solid var(--c);
}
.tier-n { font: 400 44px/1 var(--serif); color: var(--c); }
.tier h3 { font: 400 27px/1.15 var(--serif); }
.tier-tag { font: 500 13px/1.4 var(--sans); letter-spacing: .05em; text-transform: uppercase; color: var(--c); }
.tier > p:not(.tier-tag) { font-size: 15px; line-height: 1.65; color: var(--muted); }
.tier-props { display: flex; flex-wrap: wrap; gap: 6px; margin-top: auto; padding-top: 6px; }
.tier-props li { font-size: 12.5px; padding: 4px 10px; border-radius: 999px; background: color-mix(in srgb, var(--c) 10%, var(--sheet)); color: var(--ink); }
.unrecallable { display: grid; grid-template-columns: 56px minmax(0, 1fr); gap: 22px; align-items: start; margin-top: 24px; padding: 26px 28px; }
.unrecallable svg { width: 48px; height: 48px; fill: none; stroke: var(--accent); stroke-width: 1.6; stroke-linecap: round; }
.unrecallable .fill { fill: var(--accent); stroke: none; }
.unrecallable h3 { font: 400 26px/1.2 var(--serif); margin-bottom: 8px; }
.unrecallable p { color: var(--muted); font-size: 15.5px; line-height: 1.7; max-width: 68em; }
@media (max-width: 860px) {
  .paper-world, .tiers { grid-template-columns: minmax(0, 1fr); }
  .tier { min-height: 0; }
  .unrecallable { grid-template-columns: minmax(0, 1fr); gap: 12px; padding: 22px; }
}
.features .line-media { aspect-ratio: 4 / 3; }
.tier { min-height: calc(300px + var(--h) * 38px); }
.features .line-media video { object-position: left center; }
.scene-kicker { flex-wrap: wrap; }
.wl-plot { max-height: 150px; }

/* Benchmark: six capability scenes */
.bench-map { margin-top: 8px; }
.scene-kicker .badge-building { margin-left: 4px; font-style: normal; text-transform: none; letter-spacing: 0; }
.scene-how { font-size: 15.5px; line-height: 1.7; color: var(--muted); max-width: 46em; padding-left: 14px; border-left: 2px solid color-mix(in srgb, var(--c) 45%, var(--rule)); }
.levels { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 16px; }
.levels > div { display: grid; gap: 6px; align-content: start; padding: 18px 20px; border-radius: 14px; background: color-mix(in srgb, var(--c) 6%, var(--sheet)); border: 1px solid color-mix(in srgb, var(--c) 22%, var(--rule)); }
.level-n { font: 600 11.5px/1.3 var(--sans); letter-spacing: .1em; text-transform: uppercase; color: var(--c); }
.levels b { font: 400 21px/1.2 var(--serif); }
.levels p { font-size: 14.5px; line-height: 1.6; color: var(--muted); }
.wl-sheet { border-color: color-mix(in srgb, var(--cap-wl) 30%, var(--rule)); background: linear-gradient(180deg, color-mix(in srgb, var(--cap-wl) 5%, var(--sheet)), var(--sheet) 55%); }
.wl-diagram { display: grid; grid-template-columns: minmax(0, 1.25fr) auto minmax(0, 0.8fr) auto minmax(0, 1fr); align-items: stretch; gap: 10px; }
.wl-step { display: grid; align-content: start; gap: 6px; padding: 14px 16px; border-radius: 12px; background: var(--sheet); border: 1px solid var(--rule); min-width: 0; }
.wl-step-n { font: 600 11px/1.3 var(--sans); letter-spacing: .1em; text-transform: uppercase; color: var(--cap-wl); }
.wl-step b { font: 400 19px/1.2 var(--serif); }
.wl-step code { font: 400 12px/1.5 var(--mono); color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.wl-step small { font-size: 13px; color: var(--muted); line-height: 1.45; }
.wl-blind svg { width: 34px; height: 34px; fill: none; stroke: var(--cap-wl); stroke-width: 1.5; stroke-linecap: round; }
.wl-to { align-self: center; color: var(--cap-wl); font-size: 22px; }
.wl-plot { width: 100%; height: auto; overflow: visible; }
.wl-plot text { font: 400 8px var(--sans); fill: var(--mark); text-anchor: end; }
.wl-sheet > .q-foot { margin-top: 12px; }
.wl-principles { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px 24px; margin-top: 22px; padding-top: 22px; border-top: 1px solid var(--rule); }
.wl-principles li { font-size: 14.5px; line-height: 1.6; color: var(--muted); padding-left: 14px; border-left: 2px solid color-mix(in srgb, var(--cap-wl) 55%, transparent); }
.wl-principles b { display: block; margin-bottom: 4px; font: 500 15px/1.4 var(--sans); color: var(--ink); }
.env-chips { margin-top: 16px; }
.env-chips small { color: var(--faint); margin-left: 4px; }
.app-tasks { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 24px; margin-top: 20px; padding-top: 20px; border-top: 1px solid var(--rule); }
.app-tasks li { font-size: 14.5px; line-height: 1.6; color: var(--muted); }
.app-tasks b { display: block; font: 500 14px/1.4 var(--sans); color: var(--c); margin-bottom: 2px; }
@media (max-width: 900px) {
  .wl-diagram { grid-template-columns: minmax(0, 1fr); }
  .wl-to { justify-self: center; transform: rotate(90deg); }
  .wl-principles { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) { .levels, .app-tasks, .wl-principles { grid-template-columns: minmax(0, 1fr); } }

/* Benchmark: construction pipeline */
.pipeline { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 14px; counter-reset: none; }
.pipeline li { position: relative; display: grid; align-content: start; gap: 8px; padding: 20px 18px 22px; border-radius: 16px; background: var(--sheet); border: 1px solid var(--rule); }
.pipeline li + li::before { content: "→"; position: absolute; left: -13px; top: 30px; color: var(--faint); font-size: 14px; }
.pl-role { justify-self: start; padding: 3px 10px; border-radius: 999px; font: 500 12px/1.4 var(--sans); }
.pl-expert .pl-role { color: var(--accent-ink); background: var(--accent-wash); }
.pl-agent .pl-role { color: color-mix(in srgb, var(--thread) 70%, var(--ink)); background: color-mix(in srgb, var(--thread) 13%, var(--sheet)); }
.pl-both .pl-role { color: var(--ink); background: linear-gradient(90deg, color-mix(in srgb, var(--thread) 15%, var(--sheet)), var(--accent-wash)); }
.pl-n { font: 400 34px/1 var(--serif); color: var(--faint); margin-top: 6px; }
.pipeline b { font: 400 21px/1.2 var(--serif); }
.pipeline p { font-size: 14px; line-height: 1.6; color: var(--muted); }
.pl-return { display: flex; align-items: center; gap: 8px; margin-top: 14px; font: italic 400 16px/1.4 var(--serif); color: var(--accent); }
.pl-return svg { width: 18px; height: 18px; flex-shrink: 0; }
.funnel { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 18px 36px; align-items: center; margin-top: 28px; padding: 22px 26px; }
.funnel-bar { height: 14px; border-radius: 8px; background: var(--rule); overflow: hidden; }
.funnel-bar i { display: block; width: 60%; height: 100%; background: linear-gradient(90deg, var(--accent), var(--thread)); border-radius: 8px; }
.funnel dl { display: flex; gap: 32px; margin: 0; }
.funnel dt { font-size: 13px; color: var(--muted); }
.funnel dd { margin: 4px 0 0; font: 400 28px/1.1 var(--serif); }
@media (max-width: 1100px) { .pipeline { grid-template-columns: repeat(3, minmax(0, 1fr)); } .pipeline li:nth-child(4)::before { display: none; } }
@media (max-width: 760px) {
  .pipeline { grid-template-columns: minmax(0, 1fr); }
  .pipeline li + li::before { content: "↓"; left: 24px; top: -15px; }
  .pipeline li:nth-child(4)::before { display: block; }
  .funnel { grid-template-columns: minmax(0, 1fr); }
  .funnel dl { gap: 20px; flex-wrap: wrap; }
}

/* Tasks: closed-loop research */
.exposes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.exposes article { padding: 30px; }
.exposes svg, .package svg, .source-icon svg { fill: none; stroke: var(--thread); stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.exposes svg { width: 45px; height: 45px; margin-bottom: 22px; }
.exposes .fill { fill: var(--thread); stroke: none; }
.exposes h3 { font: 400 26px/1.2 var(--serif); margin-bottom: 14px; }
.exposes p { color: var(--muted); font-size: 15px; line-height: 1.7; }
.sources { display: grid; grid-template-columns: auto minmax(0, 1fr) minmax(0, 1fr); gap: 16px 28px; align-items: start; margin-top: 28px; padding-top: 26px; border-top: 1px solid var(--rule); }
.sources-head { font: 500 13px/1.5 var(--sans); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); max-width: 150px; }
.source { display: grid; grid-template-columns: 44px minmax(0, 1fr); gap: 14px; }
.source-icon { display: grid; place-items: center; width: 44px; height: 44px; padding: 10px; border-radius: 50%; background: color-mix(in srgb, var(--thread) 12%, var(--sheet)); }
.source-icon svg { width: 100%; height: 100%; }
.source b { display: block; font: 400 20px/1.25 var(--serif); margin-bottom: 4px; }
.source p { color: var(--muted); font-size: 14.5px; line-height: 1.6; }
.package { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 0; margin-bottom: 28px; border-radius: 18px; overflow: hidden; border: 1px solid var(--rule); background: var(--sheet); }
.package li { display: grid; align-content: start; gap: 8px; padding: 22px 20px 24px; }
.package li + li { border-left: 1px solid var(--rule); }
.pkg-icon { display: grid; place-items: center; width: 40px; height: 40px; padding: 9px; border-radius: 12px; background: color-mix(in srgb, var(--thread) 10%, var(--sheet)); margin-bottom: 6px; }
.pkg-icon svg { width: 100%; height: 100%; }
.package b { font: 400 21px/1.2 var(--serif); }
.package p { font-size: 14px; line-height: 1.6; color: var(--muted); }
.package .pkg-sealed { background: color-mix(in srgb, var(--accent) 6%, var(--sheet)); }
.package .pkg-sealed svg { stroke: var(--accent); }
.package .pkg-sealed .pkg-icon { background: var(--accent-wash); }
.progress-note { display: flex; gap: 14px; align-items: baseline; margin-top: 24px; padding: 18px 24px; font-size: 15px; color: var(--muted); }
.progress-note b { color: var(--ink); font-weight: 500; white-space: nowrap; }
@media (max-width: 1100px) { .package { grid-template-columns: repeat(3, minmax(0, 1fr)); } .package li:nth-child(4) { border-left: 0; } .package li:nth-child(n+4) { border-top: 1px solid var(--rule); } }
@media (max-width: 860px) { .exposes { grid-template-columns: minmax(0, 1fr); } .sources { grid-template-columns: minmax(0, 1fr); } .sources-head { max-width: none; } }
@media (max-width: 640px) { .package { grid-template-columns: minmax(0, 1fr); } .package li + li { border-left: 0; border-top: 1px solid var(--rule); } .progress-note { display: grid; gap: 4px; } }

/* ---------------------------------------------------------------------------
   Interactive loop, task sketches, capability widgets, home leaderboard chart
   --------------------------------------------------------------------------- */

/* Loop: labels and callouts can be buttons; pointing at a capability lifts it */
button.lm-label { background: none; border: 0; padding: 0; font: inherit; color: var(--ink); cursor: pointer; }
button.lm-callout { font: inherit; text-align: left; cursor: pointer; transition: transform .2s, box-shadow .2s; }
button.lm-callout:hover { box-shadow: 0 20px 40px -24px rgb(var(--shadow) / .5); }
.lm-node, .lm-hub { cursor: pointer; }
.lm-node > circle, .lm-hub > circle { transition: stroke-width .2s, fill .2s; }
.lm-node.is-on > circle { stroke-width: 4; fill: color-mix(in srgb, var(--c) 12%, var(--sheet)); }
.lm-hub.is-on > circle { stroke-width: 16; }
.lm-seg, .lm-node, .lm-label { transition: opacity .25s; }
.loopmap.has-focus .lm-seg:not(.is-on) { opacity: .28; }
.loopmap.has-focus .lm-node:not(.is-on), .loopmap.has-focus .lm-label:not(.is-on) { opacity: .5; }
.lm-hint b { color: var(--accent-ink); }
.lg-tap { width: 14px; height: 14px; border-radius: 50%; border: 2px solid var(--accent); box-shadow: 0 0 0 4px var(--accent-wash); }
@media (prefers-reduced-motion: no-preference) {
  [data-loopmap="sketch"] .lm-node > circle { animation: lm-pulse 2.8s ease-in-out infinite; }
  [data-loopmap="sketch"] .lm-node.is-on > circle { animation: none; }
}
@keyframes lm-pulse { 0%, 100% { stroke-width: 2.5; } 50% { stroke-width: 5; } }

/* Task sketch dialog */
.sketch {
  width: min(1000px, calc(100vw - 32px)); max-height: calc(100dvh - 48px); padding: 0; overflow: auto;
  border: 1px solid var(--rule); border-radius: 24px; background: var(--sheet); color: var(--ink);
  box-shadow: 0 40px 90px -30px rgb(var(--shadow) / .55);
}
.sketch::backdrop { background: rgb(12 12 20 / .42); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); }
.sk-top { display: flex; align-items: start; gap: 12px; padding: 16px 16px 0 22px; }
.sk-tabs { display: flex; flex-wrap: wrap; gap: 6px; flex: 1; }
.sk-tabs button {
  display: inline-flex; align-items: center; gap: 7px; padding: 7px 13px 7px 9px; border-radius: 999px;
  border: 1px solid var(--rule); background: transparent; color: var(--muted); font: 500 13px/1 var(--sans); cursor: pointer;
}
.sk-tabs .cap-icon { width: 16px; height: 16px; stroke: var(--c); stroke-width: 1.8; }
.sk-tabs button:hover { color: var(--ink); border-color: color-mix(in srgb, var(--c) 45%, var(--rule)); }
.sk-tabs button[aria-selected="true"] { color: var(--ink); background: color-mix(in srgb, var(--c) 12%, var(--sheet)); border-color: color-mix(in srgb, var(--c) 50%, var(--rule)); }
.sk-tab-dot { width: 10px; height: 10px; margin: 3px; border-radius: 50%; background: var(--c); box-shadow: 0 0 0 3px color-mix(in srgb, var(--c) 25%, transparent); }
.sk-body { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 24px 36px; padding: 26px 30px 24px; }
.sk-kicker { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font: 600 12px/1.4 var(--sans); letter-spacing: .1em; text-transform: uppercase; color: var(--c); }
.sk-kicker .badge-building { letter-spacing: 0; text-transform: none; }
.sk-copy h3 { margin: 8px 0 10px; font: 400 clamp(2rem, 4vw, 2.6rem)/1.05 var(--serif); letter-spacing: -.015em; }
.sk-ask { margin-bottom: 22px; font-size: 16.5px; line-height: 1.55; color: var(--muted); }
.sk-material { margin: 0; align-self: start; }
.sk-material img { width: 100%; max-height: 330px; object-fit: cover; border-radius: 14px; border: 1px solid var(--rule); background: var(--plate); }
.sk-material img.sk-dark { object-fit: contain; padding: 10px; background: var(--plate-dark); }
.sk-material figcaption { margin-top: 10px; font-size: 13.5px; }
.sk-foot { grid-column: 1 / -1; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 14px 20px; padding-top: 18px; border-top: 1px dashed var(--rule); }
.sk-foot p { font-size: 13.5px; color: var(--muted); }
.sk-code { display: grid; gap: 12px; padding: 18px; border-radius: 14px; background: var(--code-bg); color: #9BA1B0; font: 400 12px/1.4 var(--mono); }
.sk-code-bar { padding-bottom: 12px; border-bottom: 1px solid rgb(255 255 255 / .08); }
.sk-code .c-comment { color: #7F8596; }
.sk-code .mask { display: block; height: 11px; }
.sk-wl { display: grid; gap: 6px; padding: 18px; border-radius: 14px; background: color-mix(in srgb, var(--cap-wl) 6%, var(--sheet)); border: 1px solid color-mix(in srgb, var(--cap-wl) 30%, var(--rule)); }
.sk-wl code { font: 400 12.5px/1.5 var(--mono); }
.sk-wl-to { margin-block: 4px; font-size: 13px; color: var(--cap-wl); }
.sk-wl svg { width: 100%; height: auto; }
.sk-dbs { display: flex; flex-wrap: wrap; gap: 8px; padding: 20px; border-radius: 14px; background: color-mix(in srgb, var(--c) 8%, var(--sheet)); border: 1px solid color-mix(in srgb, var(--c) 30%, var(--rule)); }
.sk-dbs span { padding: 7px 12px; border-radius: 999px; background: var(--sheet); border: 1px solid var(--rule); font-size: 13px; }
@media (max-width: 760px) {
  .sk-body { grid-template-columns: minmax(0, 1fr); padding: 20px; }
  .sk-top { padding-left: 16px; }
}

/* Given → agent → checked: in the dialog a list, in a scene a three-step strip */
.sk-flow { display: grid; gap: 12px; }
.sk-flow li { position: relative; display: grid; grid-template-columns: 26px minmax(0, 1fr); column-gap: 12px; font-size: 15px; line-height: 1.5; }
.sk-flow-n { grid-row: span 2; display: grid; place-items: center; width: 26px; height: 26px; border-radius: 50%; border: 1.5px solid var(--c); color: var(--c); font: 600 12px/1 var(--sans); }
.sk-flow small { font: 600 11.5px/1.5 var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--c); }
.scene .sk-flow { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; margin-top: 24px; }
.scene .sk-flow li { align-content: start; padding: 14px 16px; border-radius: 12px; background: color-mix(in srgb, var(--c) 5%, var(--sheet)); border: 1px solid color-mix(in srgb, var(--c) 22%, var(--rule)); }
.scene .sk-flow li + li::before { content: "→"; position: absolute; left: -15px; top: 50%; transform: translateY(-50%); color: var(--c); font-size: 14px; }
@media (max-width: 720px) {
  .scene .sk-flow { grid-template-columns: minmax(0, 1fr); gap: 10px; }
  .scene .sk-flow li + li::before { content: none; }
}

/* Masked values */
.mask { display: inline-block; width: 2.6em; height: .85em; vertical-align: -.08em; border-radius: 3px; background: color-mix(in srgb, var(--c) 24%, var(--rule)); }
.code .mask, .sk-code .mask { background: rgb(255 255 255 / .13); }
.mask.m-45 { width: 45%; } .mask.m-60 { width: 60%; } .mask.m-80 { width: 80%; }
.sk-code .mask.is-hot { background: color-mix(in srgb, var(--mark) 65%, transparent); }

/* Shared: small labels, segmented tabs, swapped text */
.pane-label { font: 600 11.5px/1.4 var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--faint); }
.seg-tabs { display: inline-flex; flex-wrap: wrap; gap: 4px; width: fit-content; max-width: 100%; padding: 4px; border-radius: 999px; background: color-mix(in srgb, var(--c) 7%, var(--paper)); border: 1px solid var(--rule); }
.seg-tabs button { padding: 8px 15px; border: 0; border-radius: 999px; background: transparent; color: var(--muted); font: 500 13.5px/1 var(--sans); cursor: pointer; }
.seg-tabs button:hover { color: var(--ink); }
.seg-tabs button[aria-selected="true"] { background: var(--sheet); color: var(--ink); box-shadow: 0 1px 4px rgb(var(--shadow) / .12), inset 0 0 0 1px color-mix(in srgb, var(--c) 45%, transparent); }
.pane-text p { font-size: 15.5px; line-height: 1.65; color: var(--muted); }
.pane-text b { color: var(--ink); font-weight: 500; }

/* Protocol Planning: the levels switch the sheet */
.wd-pane { display: grid; gap: 12px; }
.history-ops li { padding-bottom: 6px; }
.history-ops code, .candidates code, .plan-slots code { font: 400 12.5px/1.6 var(--mono); color: var(--ink); overflow-wrap: anywhere; }
.candidates { display: grid; gap: 6px; }
.candidates li { padding: 7px 12px; border-radius: 8px; border: 1px dashed color-mix(in srgb, var(--c) 45%, var(--rule)); }
.candidates li.candidates-more { border: 0; padding-block: 0; font-size: 13px; color: var(--faint); }
.wd-goal { display: flex; flex-wrap: wrap; gap: 4px 10px; align-items: baseline; padding: 10px 14px; border-radius: 10px; background: color-mix(in srgb, var(--c) 8%, var(--sheet)); font-size: 15px; }
.wd-goal span { font: 600 11.5px/1.4 var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--c); }
.plan-slots { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.plan-slots li { display: flex; align-items: center; gap: 10px; padding: 8px 12px; border-radius: 8px; border: 1px dashed color-mix(in srgb, var(--c) 45%, var(--rule)); }
.plan-slots b { font: 600 12px/1 var(--sans); color: var(--c); }
.levels > button {
  display: grid; gap: 6px; align-content: start; padding: 18px 20px; border-radius: 14px; text-align: left;
  font: inherit; color: var(--ink); cursor: pointer; transition: background-color .2s, border-color .2s, box-shadow .2s;
  background: color-mix(in srgb, var(--c) 4%, var(--sheet)); border: 1px solid color-mix(in srgb, var(--c) 22%, var(--rule));
}
.levels > button > span:last-child { font-size: 14.5px; line-height: 1.6; color: var(--muted); }
.levels > button:hover { border-color: color-mix(in srgb, var(--c) 55%, var(--rule)); }
.levels > button[aria-selected="true"] { background: color-mix(in srgb, var(--c) 11%, var(--sheet)); border-color: var(--c); box-shadow: inset 0 0 0 1px var(--c); }

/* Experiment Observation: question types light up frames */
.ep-strip figure { position: relative; transition: opacity .3s, filter .3s; }
.ep-strip img { aspect-ratio: 1; outline: 2px solid transparent; outline-offset: 3px; transition: outline-color .3s; }
.ep-n {
  position: absolute; top: 10px; left: 10px; display: grid; place-items: center; width: 28px; height: 28px; border-radius: 50%;
  background: var(--c); color: #fff; font: 600 13px/1 var(--sans); opacity: 0; transform: scale(.6); transition: opacity .25s, transform .25s;
}
.ep-sheet[data-active="objects"] figure:not([data-frame="2"]),
.ep-sheet[data-active="actions"] figure:not([data-frame="1"]),
.ep-sheet[data-active="states"] figure:not([data-frame="3"]) { opacity: .35; filter: grayscale(.7); }
.ep-sheet[data-active="objects"] [data-frame="2"] img,
.ep-sheet[data-active="actions"] [data-frame="1"] img,
.ep-sheet[data-active="states"] [data-frame="3"] img,
.ep-sheet[data-active="order"] img { outline-color: var(--c); }
.ep-sheet[data-active="order"] .ep-n { opacity: 1; transform: none; }
.ep-sheet .seg-tabs { margin-top: 22px; }
.ep-sheet .pane-text { margin-top: 12px; min-height: 3.4em; }

/* Scientific Computing: symptom, repair, compare */
.c-dim { color: #7F8596; }
.c-defect { margin-inline: -16px; padding-inline: 16px; transition: background-color .3s; }
.sc-sheet[data-active="repair"] .c-defect { background: color-mix(in srgb, var(--mark) 24%, transparent); }
.sc-sheet[data-active="repair"] .c-defect .mask { background: color-mix(in srgb, var(--mark) 70%, transparent); }
.plot .band { fill: var(--c); opacity: 0; transition: opacity .3s; }
.plot .band-label, .plot .symptom { font: italic 400 13px var(--serif); opacity: 0; transition: opacity .3s; }
.plot .band-label { fill: var(--muted); }
.plot .symptom { fill: var(--mark); }
.plot .line { transition: opacity .3s; }
.sc-sheet[data-active="compare"] .band { opacity: .22; }
.sc-sheet[data-active="compare"] .band-label, .sc-sheet[data-active="symptom"] .symptom { opacity: 1; }
.sc-sheet[data-active="symptom"] .line { stroke-dasharray: 5 4; opacity: .6; }
.sc-sheet .pane-text { min-height: 5em; }

/* Scientific Software Operation: drag between start and required state */
.compare { --pos: 50%; position: relative; aspect-ratio: 16 / 9; overflow: hidden; border-radius: 12px; background: var(--plate-dark); }
.cmp-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; padding: 16px; background: var(--plate-dark); }
.cmp-after { clip-path: inset(0 0 0 var(--pos)); }
.cmp-line { position: absolute; top: 0; bottom: 0; left: var(--pos); width: 2px; margin-left: -1px; background: #fff; pointer-events: none; }
.cmp-line span { position: absolute; top: 50%; left: 50%; display: grid; place-items: center; width: 36px; height: 36px; border-radius: 50%; transform: translate(-50%, -50%); background: #fff; color: #15151C; font-size: 15px; box-shadow: 0 4px 14px rgb(0 0 0 / .35); }
.cmp-tag { position: absolute; top: 12px; padding: 5px 11px; border-radius: 999px; font: 500 12.5px/1.2 var(--sans); color: #fff; background: rgb(255 255 255 / .14); pointer-events: none; }
.cmp-tag-l { left: 12px; } .cmp-tag-r { right: 12px; }
.cmp-range { position: absolute; inset: 0; width: 100%; height: 100%; margin: 0; opacity: 0; cursor: ew-resize; }
.compare:has(.cmp-range:focus-visible) { outline: 2px solid var(--accent); outline-offset: 3px; }

/* Hypothesis Discovery: walk the research path */
.tree-hit { cursor: pointer; outline: none; }
.tree .tree-rev circle { fill: var(--sheet); stroke: var(--c); stroke-width: 1.4; transition: fill .2s, stroke-width .2s; }
.tree-hit:hover circle, .tree-hit:hover ellipse { stroke-width: 2.4; }
.tree-hit:focus-visible circle, .tree-hit:focus-visible ellipse { stroke: var(--accent); stroke-width: 2.6; }
.tree .tree-hit[aria-pressed="true"] circle, .tree .tree-hit[aria-pressed="true"] ellipse { stroke: var(--mark); stroke-width: 2.4; }
.tree .tree-rev[aria-pressed="true"] circle { fill: var(--c); }
.tree .tree-hit[aria-pressed="true"] text.tree-tick, .tree .tree-hit[aria-pressed="true"] .tree-label { fill: var(--ink); font-weight: 600; }
.hd-steps { min-height: 7.6em; }

/* Home: leaderboard chart */
.board-chart { display: grid; gap: 18px; padding: 26px 28px 22px; text-decoration: none; color: var(--ink); transition: box-shadow .25s; }
.board-chart:hover { box-shadow: 0 28px 56px -32px rgb(var(--shadow) / .45); }
.bc-head { display: flex; flex-wrap: wrap; align-items: start; justify-content: space-between; gap: 12px 16px; }
.bc-title { display: grid; gap: 4px; font: 400 26px/1.15 var(--serif); }
.bc-title small { font: 400 14px/1.4 var(--sans); color: var(--muted); }
.bc-status { display: inline-flex; align-items: center; gap: 10px; padding: 7px 14px; border-radius: 999px; border: 1px solid var(--rule); background: var(--sheet); font-size: 13.5px; color: var(--muted); }
.bc-scroll { display: block; overflow-x: auto; padding-bottom: 4px; }
.bc-plot { position: relative; display: grid; grid-auto-flow: column; grid-auto-columns: minmax(0, 1fr); column-gap: 10px; height: 320px; min-width: 760px; padding: 30px 0 0 40px; }
.bc-grid { position: absolute; left: 40px; right: 0; top: 30px; bottom: 54px; pointer-events: none; }
.bc-grid span { position: absolute; left: 0; right: 0; bottom: var(--t); border-top: 1px dashed var(--rule); }
.bc-grid span:last-child { border-top: 1px solid color-mix(in srgb, var(--faint) 60%, var(--rule)); }
.bc-grid small { position: absolute; right: 100%; top: 0; padding-right: 8px; transform: translateY(-50%); font-size: 12px; color: var(--muted); font-variant-numeric: tabular-nums; }
.bc-col { position: relative; display: grid; grid-template-rows: minmax(0, 1fr) 54px; }
.bc-bar {
  position: relative; align-self: end; height: var(--v); min-height: 2px; margin-inline: 16%;
  border-radius: 4px 4px 0 0; background: var(--accent); transform-origin: bottom; transition: transform .9s cubic-bezier(.2, .8, .2, 1), filter .2s;
}
.bc-bar b { position: absolute; bottom: 100%; left: 50%; padding-bottom: 4px; transform: translateX(-50%); font: 600 13px/1 var(--sans); color: var(--ink); }
.bc-col.is-await .bc-bar {
  border: 1px dashed color-mix(in srgb, var(--accent) 50%, var(--rule)); border-bottom: 0;
  background: repeating-linear-gradient(135deg, color-mix(in srgb, var(--accent) 16%, transparent) 0 5px, transparent 5px 11px);
}
.bc-col:hover .bc-bar { filter: brightness(1.12); }
.bc-col.is-await:hover .bc-bar { border-color: var(--accent); }
.bc-name { align-self: start; padding-top: 10px; font: 400 12.5px/1.3 var(--sans); color: var(--muted); text-align: center; overflow-wrap: anywhere; }
.bc-name small { display: block; font-size: 11px; color: var(--faint); }
.bc-group { position: absolute; top: -26px; left: 0; font: 600 11px/1 var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--faint); white-space: nowrap; }
.bc-col.starts-group::before { content: ""; position: absolute; left: -6px; top: -26px; bottom: 54px; border-left: 1px dashed var(--rule); }
.bc-plot.is-await::after {
  content: "Awaiting results"; position: absolute; left: 40px; right: 0; top: 42%; width: fit-content; margin-inline: auto;
  padding: 7px 18px; border-radius: 999px; border: 1px solid var(--rule); background: var(--sheet);
  font: italic 400 19px/1.2 var(--serif); color: var(--muted); pointer-events: none;
}
.bc-tip { position: absolute; z-index: 2; display: grid; gap: 2px; padding: 9px 12px; border-radius: 10px; transform: translate(-50%, calc(-100% - 10px)); background: var(--ink); color: var(--on-ink); font: 400 12.5px/1.45 var(--sans); white-space: nowrap; pointer-events: none; }
.bc-tip em { font-style: normal; opacity: .8; }
.bc-foot { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 8px 16px; padding-top: 16px; border-top: 1px solid var(--rule); font-size: 14px; color: var(--muted); }
.bc-go { display: inline-flex; gap: 8px; color: var(--ink); font-weight: 500; }
.bc-go i { font-style: normal; transition: transform .2s; }
.board-chart:hover .bc-go i { transform: translateX(4px); }
@media (prefers-reduced-motion: no-preference) {
  .js .board-chart.reveal:not(.is-visible) .bc-bar { transform: scaleY(0); }
}
.sk-wl svg { max-height: 150px; }
#cap-wd .sheet-split { grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); }
.levels > button[aria-selected="false"] .level-n::after { content: "  ·  select to view"; color: var(--faint); letter-spacing: .04em; text-transform: none; font-weight: 500; }
.ep-sheet { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: 0 32px; align-items: start; }
.ep-sheet .ep-strip { grid-row: 1 / 4; }
.ep-sheet .seg-tabs { margin-top: 0; }
.ep-sheet .q-foot { grid-column: 1 / -1; margin-top: 18px; }
@media (max-width: 1100px) {
  #cap-wd .sheet-split { grid-template-columns: minmax(0, 1fr); }
  .ep-sheet { grid-template-columns: minmax(0, 1fr); }
  .ep-sheet .ep-strip { grid-row: auto; }
  .ep-sheet .seg-tabs { margin-top: 20px; }
}
.bc-plot { padding-left: 48px; }
.bc-grid, .bc-plot.is-await::after { left: 48px; }

/* ---------------------------------------------------------------------------
   Tasks: the LPSC task world (lpsc.html) in a frame on wide screens; phones get the poster link
   --------------------------------------------------------------------------- */
.lpsc-frame { position: relative; padding: 0; overflow: hidden; border-radius: 24px; height: clamp(640px, 84vh, 820px); }
.lpsc-frame iframe { position: absolute; inset: 0; z-index: 1; width: 100%; height: 100%; border: 0; display: block; background: var(--paper); opacity: 0; transition: opacity .5s; }
.lpsc-frame.is-live iframe { opacity: 1; }
.lpsc-poster { position: absolute; inset: 0; display: block; text-decoration: none; color: inherit; }
.lpsc-poster img { width: 100%; height: 100%; object-fit: cover; }
.poster-dark { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .poster-light { display: none; }
  :root:not([data-theme="light"]) .poster-dark { display: block; }
}
:root[data-theme="dark"] .poster-light { display: none; }
:root[data-theme="dark"] .poster-dark { display: block; }
.lpsc-poster-cta { position: absolute; left: 50%; bottom: 28px; transform: translateX(-50%); display: grid; justify-items: center; gap: 8px; text-align: center; }
.lpsc-poster-cta small { font-size: 12px; color: var(--muted); }
.lpsc-poster-cta .btn { white-space: nowrap; }
.lpsc-poster:hover .btn-primary { filter: brightness(1.08); }
.lp-foot { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px 28px; padding: 18px 6px 0; }
.lp-foot-text { max-width: 820px; font-size: 13.5px; line-height: 1.6; color: var(--muted); }
.lp-foot-text b { color: var(--ink); font-weight: 500; }
.lp-sources summary { margin-top: 6px; color: var(--ink); font-weight: 500; cursor: pointer; }
.lp-sources a { color: var(--ink); }
.lp-foot .btn { flex-shrink: 0; }
@media (max-width: 760px) {
  .lpsc-frame { height: auto; aspect-ratio: 4 / 5; }
  .lpsc-frame iframe { display: none; }
  .lp-foot { flex-direction: column; align-items: stretch; padding: 16px 2px 0; }
}

/* ---------------------------------------------------------------------------
   Benchmark: two lines (end-to-end research, six capabilities) and the long route of one end-to-end task
   --------------------------------------------------------------------------- */
.two-lines { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; margin-top: 36px; }
.tl-card {
  --c: var(--thread); position: relative; display: flex; flex-direction: column; gap: 16px; padding: 28px 30px 26px; overflow: hidden;
  border-radius: 24px; border: 1px solid var(--rule); background: var(--glass); text-decoration: none; color: inherit; transition: transform .3s, box-shadow .3s;
}
.tl-card::before { content: ""; position: absolute; inset: 0 0 auto; height: 4px; background: var(--c); }
.tl-cap { --c: var(--accent); }
.tl-cap::before { background: linear-gradient(90deg, var(--cap-wd), var(--cap-wl), var(--cap-ep), var(--cap-sc), var(--cap-gui), var(--cap-hd)); }
.tl-card:hover { transform: translateY(-3px); box-shadow: 0 22px 46px -30px rgb(var(--shadow) / .5); }
.tl-kicker { display: flex; align-items: center; gap: 10px; font: 600 12px/1.3 var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--c); }
.tl-kicker span { padding: 3px 9px; border-radius: 999px; background: color-mix(in srgb, var(--c) 13%, transparent); letter-spacing: .06em; }
.tl-card h3 { font: 400 clamp(26px, 2.4vw, 32px)/1.12 var(--serif); letter-spacing: -.01em; }
.tl-card h3 em { color: var(--accent-ink); }
.tl-card dl { margin: 0; display: grid; border-top: 1px solid var(--rule); }
.tl-card dl > div { display: grid; grid-template-columns: 118px minmax(0, 1fr); gap: 14px; padding: 9px 0; border-bottom: 1px solid var(--rule); font-size: 14px; line-height: 1.5; }
.tl-card dt { color: var(--faint); font-size: 13px; }
.tl-card dd { margin: 0; color: var(--ink); }
.tl-answer { font: italic 400 21px/1.3 var(--serif); color: var(--accent-ink); }
.tl-go { margin-top: auto; font-size: 14px; font-weight: 500; color: var(--c); }

.e2e-route { margin-bottom: 22px; padding: 20px 24px 22px; border-radius: 22px; }
.e2e-route-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 18px; margin: 0 0 16px; font-size: 13px; color: var(--muted); }
.e2e-route-head b { margin-right: auto; font: 400 21px/1.2 var(--serif); color: var(--ink); }
.e2e-route ol { list-style: none; margin: 0; padding: 0; display: flex; gap: 20px; }
.e2e-route li { position: relative; flex: 1 1 0; min-width: 0; padding: 11px 12px 12px; border-radius: 12px; border: 1px solid var(--rule); background: var(--sheet); font-size: 13px; line-height: 1.38; }
.e2e-route li b { display: block; margin-bottom: 6px; font: 500 11px/1 var(--mono); color: var(--thread); }
.e2e-route li + li::before { content: "→"; position: absolute; left: -15px; top: 50%; transform: translateY(-50%); font-size: 12px; color: var(--faint); }
.e2e-route li.is-loop { border-style: dashed; border-color: var(--accent); background: var(--accent-wash); color: var(--accent-ink); }
.e2e-route li.is-loop b { color: var(--accent); font-size: 14px; }
.lp-actions { display: flex; flex-wrap: wrap; gap: 8px; flex-shrink: 0; }

.e2e-pointer { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); align-items: center; padding: 0; overflow: hidden; border-radius: 24px; text-decoration: none; color: inherit; }
.e2e-pointer img { width: 100%; height: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.e2e-pointer-text { display: grid; gap: 10px; padding: 28px 36px; }
.e2e-pointer-text b { font: 400 clamp(24px, 2.4vw, 32px)/1.15 var(--serif); }
.e2e-pointer-text > span:nth-child(3) { color: var(--muted); }
.e2e-pointer .text-link { font-weight: 500; color: var(--accent); }
.e2e-pointer:hover .text-link { text-decoration: underline; }

@media (max-width: 1000px) {
  .two-lines { grid-template-columns: minmax(0, 1fr); }
  .e2e-route ol { flex-wrap: wrap; gap: 10px; }
  .e2e-route li { flex: 1 1 40%; }
  .e2e-route li + li::before { display: none; }
  .e2e-pointer { grid-template-columns: minmax(0, 1fr); }
}

/* ---------------------------------------------------------------------------
   Capabilities: what each one demands, how hard the real material is, how it is judged
   --------------------------------------------------------------------------- */
.scene-route { justify-self: start; display: inline-flex; align-items: center; gap: 10px; padding: 6px 14px 6px 6px; border-radius: 999px; border: 1px solid var(--rule); background: var(--sheet); font-size: 13.5px; color: var(--ink); text-decoration: none; }
.scene-route span { flex: none; white-space: nowrap; padding: 3px 9px; border-radius: 999px; background: color-mix(in srgb, var(--thread) 13%, transparent); color: var(--thread); font: 600 11px/1.3 var(--sans); letter-spacing: .08em; text-transform: uppercase; }
.scene-route:hover { border-color: var(--thread); }
.cap-facts { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin: 26px 0 0; }
.cap-facts > div { padding: 16px 18px 15px; border-radius: 16px; border: 1px solid var(--rule); background: var(--glass); }
.cap-facts dt { font: 400 clamp(32px, 3.4vw, 44px)/1 var(--serif); letter-spacing: -.02em; color: var(--c); }
.cap-facts dd { margin: 8px 0 0; font-size: 13.5px; line-height: 1.45; color: var(--muted); }
.cap-spec { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; margin-top: 18px; border-top: 1px solid var(--rule); }
.cap-spec > div { padding: 16px 22px 4px 0; }
.cap-spec > div + div { padding-left: 22px; border-left: 1px solid var(--rule); }
.cap-spec h4 { margin: 0 0 8px; font: 600 11.5px/1.3 var(--sans); letter-spacing: .1em; text-transform: uppercase; color: var(--c); }
.cap-spec p, .cap-spec li { font-size: 14.5px; line-height: 1.6; color: var(--muted); }
.cap-spec ul { display: grid; gap: 6px; }
.cap-spec li { padding-left: 16px; position: relative; }
.cap-spec li::before { content: ""; position: absolute; left: 0; top: .7em; width: 7px; height: 1.5px; background: var(--c); }

.plan-sheet { margin-top: 16px; }
.plan-head { display: flex; flex-wrap: wrap; align-items: flex-start; justify-content: space-between; gap: 14px 24px; }
.plan-goal { max-width: 520px; font: 400 18px/1.4 var(--serif); }
.plan-goal span { display: block; margin-bottom: 4px; font: 600 11px/1.3 var(--sans); letter-spacing: .1em; text-transform: uppercase; color: var(--c); }
.plan-levels { grid-template-columns: auto auto; gap: 8px; margin: 0; }
.plan-levels > button { padding: 9px 16px; gap: 2px; border-radius: 12px; }
.plan-levels > button b { font-size: 17px; }
.plan-graph { position: relative; margin: 18px 0 0; overflow-x: auto; }
.pg-canvas svg { display: block; width: 100%; min-width: 760px; height: auto; overflow: visible; }
.pg-edge { fill: none; stroke: var(--c); stroke-width: 1.8; transition: opacity .3s, stroke .3s; }
.pg-start path, .pg-out path { fill: color-mix(in srgb, var(--c) 14%, var(--sheet)); stroke: var(--c); stroke-width: 1.4; }
.pg-start text, .pg-out text { font: 500 11.5px var(--sans); fill: var(--muted); }
.pg-out text { fill: var(--ink); }
.pg-node { cursor: pointer; outline: none; transition: opacity .3s; }
.pg-node circle { fill: var(--sheet); stroke: var(--c); stroke-width: 1.8; transition: fill .3s, stroke .3s; }
.pg-node:hover circle, .pg-node:focus-visible circle { stroke-width: 3; }
.pg-n { font: 500 11px var(--mono); fill: var(--c); }
.pg-q { font: 600 14px var(--sans); fill: var(--mark); opacity: 0; }
.pg-op { font: 500 11.5px var(--mono); fill: var(--muted); }
.pg-slot { fill: color-mix(in srgb, var(--c) 16%, var(--sheet)); stroke: var(--c); stroke-width: .8; stroke-dasharray: 2 1.5; }
.pg-tip { position: absolute; z-index: 3; margin: 0; padding: 8px 11px; border-radius: 9px; background: var(--ink); color: var(--paper); font-size: 12px; pointer-events: none; max-width: 92%; box-shadow: 0 12px 24px -12px rgb(var(--shadow) / .5); }
.pg-tip b { display: block; font-weight: 500; font-size: 11px; opacity: .7; margin-bottom: 2px; }
.pg-tip code { font: 400 11.5px/1.5 var(--mono); white-space: normal; }
.pg-tip .mask { display: inline-block; width: 22px; height: 9px; border-radius: 2px; background: color-mix(in srgb, var(--paper) 35%, transparent); vertical-align: middle; }
/* Level 1: the first seven steps are given, the eighth is the one to determine */
.scene[data-active="1"] .pg-node[data-state="done"] circle { fill: var(--c); }
.scene[data-active="1"] .pg-node[data-state="done"] .pg-n { fill: #fff; }
.scene[data-active="1"] .pg-node[data-state="done"] .pg-slot { fill: var(--faint); stroke: none; }
.scene[data-active="1"] .pg-node[data-state="next"] circle { stroke: var(--mark); stroke-width: 2.4; animation: pg-pulse 1.8s ease-in-out infinite; }
.scene[data-active="1"] .pg-node[data-state="next"] .pg-q { opacity: 1; }
.scene[data-active="1"] .pg-node[data-state="next"] .pg-slot { stroke: var(--mark); fill: color-mix(in srgb, var(--mark) 12%, var(--sheet)); }
.scene[data-active="1"] .pg-node[data-state="next"] .pg-op { opacity: 0; }
.scene[data-active="1"] [data-state="later"] { opacity: .22; }
.scene[data-active="1"] .pg-edge[data-state="next"] { stroke: var(--mark); stroke-dasharray: 4 3; }
@keyframes pg-pulse { 50% { stroke-width: 4.5; } }
.scene[data-active="1"] .pg-node[data-state="next"] .pg-n { opacity: 0; }
.plan-panes { margin-top: 14px; }
.plan-panes > div { display: flex; align-items: center; gap: 18px; font-size: 15px; line-height: 1.6; color: var(--muted); max-width: 860px; }
.plan-panes img { width: 104px; height: 104px; flex: none; object-fit: cover; border-radius: 12px; border: 1px solid var(--rule); background: var(--plate); }
@media (max-width: 900px) {
  .cap-facts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cap-spec { grid-template-columns: minmax(0, 1fr); }
  .cap-spec > div + div { padding-left: 0; border-left: 0; border-top: 1px solid var(--rule); }
}
@media (prefers-reduced-motion: reduce) { .scene[data-active="1"] .pg-node[data-state="next"] circle { animation: none; } }
.cap-facts-words dt, .cap-facts-mixed dt { font-size: clamp(22px, 2.1vw, 27px); line-height: 1.1; }
.cap-facts-words > div, .cap-facts-mixed > div { display: flex; flex-direction: column; justify-content: space-between; }

/* Scientific Computing: the code base as a map */
.sc-map-sheet { margin-top: 16px; }
.cm-legend { display: flex; align-items: center; gap: 6px 14px; flex-wrap: wrap; font-size: 13px; color: var(--muted); }
.cm-legend i { display: inline-block; width: 11px; height: 11px; border-radius: 3px; margin-right: -6px; vertical-align: -1px; }
.cm-k-core, .cm-core rect { background: var(--c); fill: var(--c); }
.cm-k-pkg { background: color-mix(in srgb, var(--c) 34%, var(--sheet)); }
.cm-k-tools { background: color-mix(in srgb, var(--faint) 40%, var(--sheet)); }
.code-map { position: relative; margin: 16px 0 0; }
.cm-canvas svg { display: block; width: 100%; height: auto; }
.cm-cell rect { stroke: var(--sheet); stroke-width: 1; transition: fill .4s, opacity .3s; }
.cm-pkg rect { fill: color-mix(in srgb, var(--c) 34%, var(--sheet)); }
.cm-tools rect { fill: color-mix(in srgb, var(--faint) 40%, var(--sheet)); }
.cm-cell text { font: 500 12px var(--mono); fill: var(--ink); pointer-events: none; }
.cm-core text { fill: #fff; }
.cm-cell .cm-n { font: 400 11px var(--mono); fill: var(--muted); }
.cm-core .cm-n { fill: rgb(255 255 255 / .8); }
.cm-cell:hover rect { fill: var(--c); }
.cm-cell:hover text { fill: #fff; }
.cm-cell.is-scan rect { fill: color-mix(in srgb, var(--c) 62%, var(--sheet)); }
.sc-flow { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 28px; align-items: center; margin-top: 22px; padding-top: 20px; border-top: 1px dashed var(--rule); }
.sc-flow .seg-tabs { margin-top: 0; }

/* Experiment Observation: what has to be followed at once */
.ep-track-sheet { margin-top: 16px; display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 2fr); gap: 24px; align-items: start; }
.ep-track-sheet > .q-foot { grid-column: 1 / -1; margin-top: 0; }
.ept-frames { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.ept-frames figure { margin: 0; opacity: .45; transition: opacity .3s; }
.ept-frames figure.is-on { opacity: 1; }
.ept-frames img { width: 100%; aspect-ratio: 3 / 4; object-fit: cover; border-radius: 10px; }
.ept-frames figcaption { margin-top: 6px; font: 600 11px/1.2 var(--sans); letter-spacing: .1em; text-transform: uppercase; color: var(--c); }
.ept-tracks { position: relative; display: grid; gap: 10px; }
.ept-axis { display: flex; justify-content: space-between; margin-left: 84px; font-size: 12px; color: var(--faint); }
.ept-canvas { position: relative; display: grid; gap: 8px; }
.ept-lane { display: grid; grid-template-columns: 76px minmax(0, 1fr); gap: 8px; align-items: center; }
.ept-name { font: 600 11px/1.2 var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.ept-bar { position: relative; height: 30px; border-radius: 8px; background: color-mix(in srgb, var(--rule) 45%, transparent); }
.ept-bar i { position: absolute; top: 3px; bottom: 3px; border-radius: 6px; background: color-mix(in srgb, var(--c) 22%, var(--sheet)); border: 1px solid color-mix(in srgb, var(--c) 40%, transparent); overflow: hidden; transition: background .2s; }
.ept-bar i + i { margin-left: 0; }
.ept-bar i em { display: block; padding: 0 5px; font: 500 10.5px/22px var(--sans); font-style: normal; color: var(--ink); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ept-bar i.is-on { background: var(--c); }
.ept-bar i.is-on em { color: #fff; }
.ept-head { position: absolute; top: -6px; bottom: -6px; width: 2px; margin-left: -1px; background: var(--mark); pointer-events: none; left: 84px; }
.ept-range { width: calc(100% - 84px); margin: 0 0 0 84px; accent-color: var(--mark); }
.ept-now { margin-left: 84px; font-size: 13.5px; line-height: 1.55; color: var(--muted); }
.ept-now b { color: var(--ink); font-weight: 600; }

/* Scientific Software Operation: a long chain of interface actions */
.gui-sheet { margin-top: 16px; }
.gui-chain { display: flex; gap: 18px; overflow-x: auto; padding-bottom: 4px; }
.gc-win { position: relative; flex: 1 1 0; min-width: 118px; display: flex; flex-direction: column; gap: 6px; padding: 30px 10px 10px; border-radius: 12px; border: 1px solid var(--rule); background: var(--sheet); }
.gc-win::before { content: ""; position: absolute; inset: 0 0 auto; height: 22px; border-radius: 12px 12px 0 0; background: color-mix(in srgb, var(--c) 12%, var(--paper)); border-bottom: 1px solid var(--rule); }
.gc-win b { position: absolute; top: 4px; left: 10px; font: 600 11px/14px var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--c); }
.gc-win span { padding: 5px 8px; border-radius: 7px; background: color-mix(in srgb, var(--c) 8%, var(--sheet)); border: 1px solid color-mix(in srgb, var(--c) 22%, var(--rule)); font-size: 12.5px; }
.gc-win + .gc-win::after { content: "→"; position: absolute; left: -14px; top: 50%; transform: translateY(-50%); color: var(--faint); font-size: 12px; }
.gc-save span { background: var(--c); color: #fff; border-color: var(--c); }
.gc-note { margin: 12px 0 18px; font-size: 14.5px; color: var(--muted); }

@media (max-width: 900px) {
  .sc-flow, .ep-track-sheet { grid-template-columns: minmax(0, 1fr); }
}

/* Home figure dialog: difficulty, a working miniature and the place on the long route */
.sk-body { grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); align-items: start; }
.sk-ask { margin-bottom: 16px; }
.sk-route-chip { display: inline-flex; align-items: center; gap: 10px; padding: 5px 14px 5px 5px; border-radius: 999px; border: 1px solid var(--rule); font-size: 13.5px; }
.sk-route-chip span { flex: none; white-space: nowrap; padding: 3px 9px; border-radius: 999px; background: color-mix(in srgb, var(--thread) 13%, transparent); color: var(--thread); font: 600 10.5px/1.3 var(--sans); letter-spacing: .08em; text-transform: uppercase; }
.sk-facts { display: grid; gap: 10px; margin: 6px 0 0; }
.sk-facts > div { display: grid; grid-template-columns: minmax(92px, auto) minmax(0, 1fr); align-items: baseline; gap: 14px; padding: 12px 16px; border-radius: 14px; border: 1px solid color-mix(in srgb, var(--c) 22%, var(--rule)); background: color-mix(in srgb, var(--c) 5%, var(--sheet)); }
.sk-facts dt { font: 400 32px/1 var(--serif); letter-spacing: -.02em; color: var(--c); }
.sk-facts-words dt { font-size: 21px; line-height: 1.15; }
.sk-facts dd { margin: 0; font-size: 14px; line-height: 1.45; color: var(--muted); }
.sk-visual { grid-column: 1 / -1; margin: 0; min-width: 0; }
.sk-visual figcaption { margin-top: 10px; font-size: 13.5px; color: var(--muted); }
.sk-visual > img { width: 100%; max-height: 300px; object-fit: cover; border-radius: 14px; border: 1px solid var(--rule); }
.sk-visual .sk-wl svg { max-height: 150px; }
.sk-plan { margin: 0; }
.sk-map { margin: 0; }
.sk-track { margin: 0; }
.sk-chain .gc-win { min-width: 0; }
.sk-hd { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; padding: 18px; border-radius: 14px; background: color-mix(in srgb, var(--c) 6%, var(--sheet)); border: 1px solid color-mix(in srgb, var(--c) 25%, var(--rule)); }
.sk-hd span { padding: 6px 12px; border-radius: 999px; background: var(--sheet); border: 1px solid var(--rule); font-size: 13px; }
.sk-hd .sk-hd-db { background: var(--c); color: #fff; border-color: var(--c); }
.sk-hd .sk-hd-final { border-color: var(--mark); color: var(--mark); font-weight: 500; }
.sk-hd i { font-style: normal; color: var(--faint); }
.sk-route { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.sk-route li { padding: 10px 12px 11px; border-radius: 12px; border: 1px solid var(--rule); background: var(--sheet); font-size: 13px; line-height: 1.38; }
.sk-route li b { display: block; margin-bottom: 6px; font: 500 11px/1 var(--mono); color: var(--c); }
.sk-route li.is-loop { border-style: dashed; border-color: var(--accent); background: var(--accent-wash); color: var(--accent-ink); }
@media (max-width: 760px) { .sk-route { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

/* Home, condensed (2026-10-28): hero facts, institution band right under the hero, one row of entry cards */
.hero-facts { display: flex; flex-wrap: wrap; gap: 6px 22px; margin-top: 22px; color: var(--muted); font-size: 14px; }
.hero-facts b { font: 400 24px/1 var(--serif); color: var(--ink); margin-right: 6px; font-variant-numeric: lining-nums tabular-nums; }
.hero:has(+ .institution-band) { padding-bottom: 40px; }
.institution-band { overflow: hidden; padding-block: 8px 72px; }
.band-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: 8px 32px; margin-bottom: 22px; }
.band-head p { font-size: 1.0625rem; color: var(--muted); max-width: 60em; }
.band-head p b { color: var(--ink); font-weight: 500; }
.institution-band .institution-marquee { gap: 12px; }
.institution-band .marquee-group { gap: 12px; padding-right: 12px; }
.institution-band .institution-chip { width: 118px; padding: 14px 10px 10px; gap: 8px; border-radius: 14px; }
.institution-band .institution-chip img { width: 48px; height: 48px; padding: 4px; border-radius: 10px; }
@media (max-width: 560px) { .institution-band { padding-bottom: 48px; } }

/* Benchmark, condensed (2026-10-28): the two lines at a glance (.lx), the LPSC task form, contribute panel, capability dialog */
.lx { --lx-pad: 22px; --lx-gap: 18px; --lx-cols: minmax(0, .78fr) minmax(0, 3.7fr) minmax(0, .78fr) minmax(0, .78fr); display: grid; gap: var(--lx-gap); margin: 0; }
.lx-heads { display: grid; grid-template-columns: var(--lx-cols); gap: 30px; padding-inline: calc(var(--lx-pad) + 1px); font: 500 12px/1.4 var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--faint); }
.lx-lane { position: relative; display: grid; grid-template-columns: var(--lx-cols); gap: 30px; padding: var(--lx-pad); border: 1px solid var(--rule); border-radius: 22px; background: var(--glass); color: inherit; text-decoration: none; transition: border-color .2s, box-shadow .2s; }
.lx-lane-1 { align-items: end; }
.lx-lane-1:hover { border-color: color-mix(in srgb, var(--thread) 50%, var(--rule)); box-shadow: 0 20px 35px -30px rgb(var(--shadow) / .5); }
.lx-lane-2 { align-items: start; }
.lx-cell { position: relative; display: grid; align-content: start; gap: 4px; font-size: 13.5px; line-height: 1.5; color: var(--muted); }
.lx-cell b { font: 400 19px/1.2 var(--serif); color: var(--ink); }
.lx-tag { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 8px; margin-bottom: 12px; font: 500 13.5px/1.3 var(--sans); color: var(--ink); }
.lx-tag span { padding: 3px 9px; border-radius: 999px; font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: #fff; background: var(--thread); }
.lx-lane-2 .lx-tag span { background: linear-gradient(90deg, var(--cap-wd), var(--cap-wl), var(--cap-ep), var(--cap-sc), var(--cap-gui), var(--cap-hd)); }
.lx-env { position: relative; min-width: 0; }
.lx-lane > * + *::after { content: "→"; position: absolute; left: -19px; top: 50%; transform: translateY(-50%); color: var(--faint); font-size: 14px; }
.lx-lane-1 .lx-out::after { content: none; }
.lx-route-note { display: flex; justify-content: space-between; gap: 12px; font-size: 13px; color: var(--muted); }
.lx-again { color: var(--thread); font-weight: 500; }
.lx-arc { display: block; width: 100%; height: 26px; overflow: visible; }
.lx-arc path { fill: none; stroke: var(--thread); stroke-width: 1.5; stroke-dasharray: 4 4; vector-effect: non-scaling-stroke; }
.lx-arc .lx-arc-head { stroke-dasharray: none; }
.lx-route { position: relative; display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 8px; margin-top: 4px; }
.lx-route::before { content: ""; position: absolute; left: 0; right: -12px; bottom: 4px; height: 2px; background: var(--thread); }
.lx-route::after { content: ""; position: absolute; right: -20px; bottom: 0; border: 5px solid transparent; border-left: 9px solid var(--thread); }
.lx-route span { position: relative; display: grid; gap: 7px; justify-items: center; }
.lx-route small { font: 600 10.5px/1 var(--sans); letter-spacing: .04em; text-transform: uppercase; color: var(--c); }
.lx-route i { width: 100%; height: 10px; border-radius: 6px; background: var(--c); }
.lx-caps { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 8px; }
.lx-cap {
  position: relative; display: grid; justify-items: center; align-content: start; gap: 5px; min-height: 100%; padding: 12px 6px 14px;
  border: 1px solid color-mix(in srgb, var(--c) 35%, var(--rule)); border-radius: 14px; background: color-mix(in srgb, var(--c) 7%, var(--sheet));
  color: var(--ink); font: inherit; text-align: center; cursor: pointer; transition: transform .2s, box-shadow .2s, border-color .2s;
}
.lx-cap::before { content: ""; position: absolute; left: 50%; bottom: calc(100% + 1px); height: calc(2 * var(--lx-pad) + var(--lx-gap) + 2px); border-left: 1.5px dashed color-mix(in srgb, var(--c) 75%, transparent); pointer-events: none; }
.lx-cap > i { display: grid; place-items: center; width: 36px; height: 36px; border-radius: 50%; border: 1.5px solid var(--c); background: var(--sheet); }
.lx-cap .cap-icon { width: 18px; height: 18px; fill: none; stroke: var(--c); stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.lx-cap small { font: 600 10.5px/1 var(--sans); letter-spacing: .04em; text-transform: uppercase; color: var(--c); margin-top: 2px; }
.lx-cap b { font: 500 13px/1.3 var(--sans); }
.lx-cap .badge-building { font-style: normal; font-size: 10.5px; padding: 2px 7px; white-space: nowrap; }
.lx-cap .badge-building::before { content: none; display: none; }
.lx-cap:hover, .lx-cap:focus-visible { transform: translateY(-3px); border-color: var(--c); box-shadow: 0 18px 30px -24px rgb(var(--shadow) / .6); }
.lx-hint { display: flex; align-items: center; gap: 12px; padding-inline: calc(var(--lx-pad) + 1px); font-size: 14px; color: var(--muted); }
.lx-hint b { color: var(--ink); font-weight: 500; }
@media (max-width: 960px) {
  .lx-heads { display: none; }
  .lx-lane { grid-template-columns: minmax(0, 1fr); gap: 16px; }
  .lx-lane > * + *::after { content: none; }
  .lx-out::before, .lx-ver::before { content: attr(data-k); font: 500 11px/1.4 var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--faint); }
  .lx-cap::before { content: none; }
  .lx-caps { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .lx-route-note .lx-again { display: none; }
}
.task-form { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; margin: 0 0 22px; }
.task-form > div { position: relative; padding: 16px 18px; border: 1px solid var(--rule); border-radius: 16px; background: var(--glass); }
.task-form > div + div::before { content: "→"; position: absolute; left: -7px; top: 50%; transform: translate(-50%, -50%); color: var(--faint); font-size: 13px; }
.task-form dt { margin-bottom: 6px; font: 500 12px/1.4 var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--thread); }
.task-form dd { margin: 0; font-size: 14.5px; line-height: 1.55; }
@media (max-width: 900px) { .task-form { grid-template-columns: repeat(2, minmax(0, 1fr)); } .task-form > div::before { content: none !important; } }
@media (max-width: 560px) { .task-form { grid-template-columns: minmax(0, 1fr); } }
.lp-sources p { margin-top: 8px; }
.contrib { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 32px 56px; padding: 44px; border-radius: 28px; }
.contrib-head { display: grid; gap: 14px; align-content: start; }
.contrib-head h2 { font: 400 clamp(2rem, 4vw, 3rem)/1.08 var(--serif); letter-spacing: -0.015em; }
.contrib-head .actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 22px; margin-top: 10px; }
.contrib-rules { display: grid; align-content: start; align-self: start; gap: 20px; margin: 0; padding: 0; list-style: none; }
.contrib-rules li { display: grid; align-content: start; gap: 8px; padding: 0 0 18px; border-bottom: 1px solid var(--rule); font-size: 15px; color: var(--muted); }
.contrib-rules .mark-bad, .contrib-rules .mark-good { font-size: 15px; }
.contrib-rules h3 { font: 400 22px/1.2 var(--serif); color: var(--ink); }
.contrib-steps { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 14px; margin: 0; padding: 0; list-style: none; }
.contrib-steps li { position: relative; display: grid; align-content: start; gap: 10px; padding: 14px 16px 16px; border-radius: 14px; border: 1px solid var(--rule); background: var(--sheet); }
.contrib-steps li + li::before { content: "→"; position: absolute; left: -7px; top: 50%; transform: translate(-50%, -50%); color: var(--faint); font-size: 13px; }
.contrib-steps b { font: 400 17px/1.25 var(--serif); }
.contrib-disc { grid-column: 1 / -1; display: grid; gap: 12px; }
@media (max-width: 860px) {
  .contrib { grid-template-columns: minmax(0, 1fr); padding: 26px 22px; }
  .contrib-steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .contrib-steps li::before { content: none !important; }
}
.cap-dialog { width: min(1120px, calc(100vw - 32px)); }
.cap-dialog .sk-top { position: sticky; top: 0; z-index: 2; padding-bottom: 14px; background: var(--sheet); border-bottom: 1px solid var(--rule); }
.cap-dialog .sk-tabs i { display: inline-flex; }
.cap-body { padding: 28px 32px 8px; }
.cap-step { display: flex; justify-content: space-between; gap: 12px; margin: 22px 32px 0; padding: 16px 0 24px; border-top: 1px dashed var(--rule); }
@media (max-width: 760px) { .cap-body { padding: 20px 18px 4px; } .cap-step { margin-inline: 18px; } }

/* Contact above the Contribute page navigation. */
.contact-strip { display: flex; flex-wrap: wrap; align-items: baseline; gap: 18px 36px; padding-block: 22px; border-top: 1px solid var(--rule); }
.contact-strip h2 { font: 500 22px/1.3 var(--serif); }
.contact-strip p { display: flex; flex-wrap: wrap; gap: 10px 28px; }
.contact-strip a { font-size: 16px; color: var(--accent-ink); text-decoration: underline; text-underline-offset: 4px; }
.contact-channels { display: grid; gap: 12px; }
.contact-channels p { align-items: baseline; }
.contact-channels span { min-width: 110px; font-size: 12px; color: var(--muted); }

.community-intro { display: grid; justify-items: center; gap: 25px; margin-bottom: 48px; text-align: center; }
.community-intro .stat-chips { width: 100%; justify-content: center; }
.community-intro .lede { max-width: 780px; }

/* Home actions: two primary actions, then three aligned resource links. */
.hero-actions { display: grid; gap: 10px; }
.hero-actions-primary, .hero-actions-resources { display: grid; gap: 10px; }
.hero-actions-primary { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.hero-actions-resources { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.hero-actions .btn { min-width: 0; height: auto; min-height: 44px; padding: 10px 14px; gap: 8px; justify-content: center; text-align: center; }
.hero-actions .btn svg { width: 18px; height: 18px; flex-shrink: 0; }
@media (max-width: 560px) {
  .hero-actions-primary { grid-template-columns: minmax(0, 1.12fr) minmax(0, 1fr); }
  .hero-actions .btn { padding: 10px 8px; font-size: 13px; line-height: 1.35; gap: 6px; }
  .hero-actions .btn svg { width: 16px; height: 16px; }
  .hero-actions .soon { font-size: 11px; }
}

/* Document Figure 1: six capabilities around a shared research loop. */
.research-map { margin:0; width:100%; }
.rm-grid { position:relative; display:grid; grid-template-columns:minmax(0,1fr) minmax(0,1.12fr) minmax(0,1fr); gap:22px 34px; isolation:isolate; }
.rm-connections { position:absolute; inset:0; width:100%; height:100%; z-index:-1; overflow:visible; pointer-events:none; }
.rm-connections path { fill:none; stroke:var(--rule); stroke-width:2; vector-effect:non-scaling-stroke; transition:stroke .2s; }
.rm-card { display:flex; flex-direction:column; align-items:stretch; position:relative; min-width:0; text-align:left; font:inherit; color:var(--ink); background:var(--sheet); border:1px solid var(--rule); border-radius:24px; padding:20px; cursor:pointer; transition:transform .2s,border-color .2s,box-shadow .2s; box-shadow:0 6px 24px rgb(var(--shadow) / .035); }
.rm-card:is(:hover,:focus-visible) { transform:translateY(-3px); border-color:var(--c); box-shadow:0 12px 30px rgb(var(--shadow) / .12); outline:2px solid color-mix(in srgb,var(--c) 24%,transparent); outline-offset:3px; }
.rm-card-head { display:flex; gap:10px; align-items:flex-start; }
.rm-number { display:inline-flex; align-items:center; justify-content:center; flex-shrink:0; width:31px; height:31px; border-radius:50%; background:color-mix(in srgb,var(--c,var(--accent)) 12%,var(--sheet)); color:var(--c,var(--accent)); font:600 12px/1 var(--sans); }
.rm-name { font:500 clamp(20px,1.65vw,28px)/1.08 var(--serif); letter-spacing:-.02em; padding-top:3px; }
.rm-open { margin-left:auto; color:var(--faint); font-size:17px; }
.rm-judge { display:block; color:var(--muted); font:400 12px/1.4 var(--sans); margin:10px 0 13px; }
.rm-material { display:block; width:100%; aspect-ratio:2.26; border-radius:12px; background:white; margin-top:auto; overflow:hidden; }
.rm-center { grid-column:2; grid-row:1 / 4; align-self:stretch; display:flex; flex-direction:column; justify-content:center; align-items:center; gap:18px; text-align:center; border-radius:32px; text-decoration:none; color:var(--ink); transition:background .2s; }
.rm-center:is(:hover,:focus-visible) { background:color-mix(in srgb,var(--accent) 6%,transparent); outline:2px solid var(--accent); outline-offset:5px; }
.rm-center-top { display:flex; flex-direction:column; align-items:center; gap:10px; }
.rm-center-title { font:500 clamp(32px,3.1vw,50px)/.98 var(--serif); letter-spacing:-.035em; }
.rm-center-title em { color:var(--accent-ink); }
.rm-center-top .rm-judge { margin:0; }
.rm-orbit { width:100%; max-width:420px; overflow:visible; }
.rm-orbit-ring { fill:none; stroke:var(--accent); stroke-width:1.5; opacity:.4; }
.rm-disc-ring { fill:var(--sheet); stroke:var(--rule); stroke-width:1.5; }
.rm-orbit-travel { fill:none; stroke:var(--accent); stroke-width:4; stroke-linecap:round; stroke-dasharray:5 956; transform-origin:center; }
.rm-center-foot { font:500 20px/1.2 var(--serif); }
.rm-cta { display:block; margin-top:14px; font:500 12px/1.5 var(--sans); color:var(--accent-ink); }
.research-map figcaption { text-align:center; margin:22px 0 0; font-size:14px; color:var(--ink); }
.research-map figcaption span { margin-left:8px; color:var(--muted); }
.hero .research-map, .hero-layout > .research-map { grid-column:1 / -1; }
@media (prefers-reduced-motion:no-preference) { .rm-orbit-travel { animation:rm-orbit 24s linear infinite; } @keyframes rm-orbit { to { transform:rotate(-360deg); } } }
@media (max-width:1000px) { .rm-grid { gap:14px; } .rm-card { padding:14px; border-radius:20px; } .rm-name { font-size:21px; } .rm-judge { font-size:11px; } .rm-card-head { gap:7px; } .rm-number { width:26px; height:26px; } .rm-center { gap:14px; } }
@media (max-width:700px) { .rm-grid { display:flex; flex-direction:column; gap:14px; } .rm-connections { display:none; } .rm-center { order:-1; padding:25px 15px; gap:15px; background:color-mix(in srgb,var(--accent) 5%,var(--sheet)); } .rm-center-title { font-size:38px; } .rm-center-title br { display:none; } .rm-orbit { max-width:290px; } .rm-center-foot { font-size:19px; } .rm-card { padding:20px; } .rm-name { font-size:26px; } .rm-material { max-height:190px; } .rm-judge { font-size:13px; } .rm-number { width:32px; height:32px; } .research-map figcaption span { display:block; margin:4px 0 0; } }

/* Focus a capability and its connection together. */
.research-map:has(.rm-card[data-map-id="hd"]:is(:hover,:focus-visible)) .rm-connections path[data-map-id="hd"] { stroke:var(--cap-hd); stroke-width:3; }
.research-map:has(.rm-card[data-map-id="wd"]:is(:hover,:focus-visible)) .rm-connections path[data-map-id="wd"] { stroke:var(--cap-wd); stroke-width:3; }
.research-map:has(.rm-card[data-map-id="sc"]:is(:hover,:focus-visible)) .rm-connections path[data-map-id="sc"] { stroke:var(--cap-sc); stroke-width:3; }
.research-map:has(.rm-card[data-map-id="gui"]:is(:hover,:focus-visible)) .rm-connections path[data-map-id="gui"] { stroke:var(--cap-gui); stroke-width:3; }
.research-map:has(.rm-card[data-map-id="wl"]:is(:hover,:focus-visible)) .rm-connections path[data-map-id="wl"] { stroke:var(--cap-wl); stroke-width:3; }
.research-map:has(.rm-card[data-map-id="ep"]:is(:hover,:focus-visible)) .rm-connections path[data-map-id="ep"] { stroke:var(--cap-ep); stroke-width:3; }

/* Signed-in account navigation follows the hidden attribute on every page. */
[data-auth-only][hidden], [data-auth-logout][hidden], [data-auth-login][hidden] { display: none !important; }

.menu-account-button { padding:10px 14px; border:0; border-radius:8px; background:transparent; color:var(--ink); font:inherit; text-align:left; cursor:pointer; }
.menu-account-button:hover { background:var(--accent-wash); color:var(--accent-ink); }

/* Wait for the saved session instead of briefly advertising Sign in. */
.js:not(.auth-ready) [data-auth-login],
.js:not(.auth-ready) .account-menu { visibility: hidden; }

.rm-status { display:block; margin-top:7px; font:italic 400 14px/1.25 var(--serif); letter-spacing:0; color:var(--muted); }

/* Pending evaluations sit below the score plot, outside the ranked results. */
.lb-pending { margin-top: 8px; }
.lb-pending .lb-pending-models { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin: 0; padding: 0; list-style: none; }
.lb-pending-models li { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 14px 16px; border: 1px dashed var(--rule); border-radius: 10px; background: var(--paper); color: var(--ink); font: 500 14px/1.5 var(--sans); }
.lb-pending-value { flex-shrink: 0; color: var(--muted); font-variant-numeric: tabular-nums; }
.lb-pending-caption { margin: 12px 0 0; padding: 0 17px; text-align: justify; color: var(--ink); font: 600 16px/1.55 var(--sans); }
.lb-pending-caption a { color: var(--accent-ink); text-decoration: underline; text-underline-offset: 3px; }
@media (max-width: 600px) { .lb-pending .lb-pending-models { grid-template-columns: minmax(0, 1fr); } }
.evaluation-citations { margin-left: .2em; white-space: nowrap; }