:root {
  --surface: #f8fafc;
  --surface-dim: #f0f4f8;
  --surface-1: #e8eef5;
  --surface-2: #dce5ef;
  --ink: #101a2a;
  --ink-soft: #425268;
  --muted: #718095;
  --line: #d4dee9;
  --blue: #557fa3;
  --blue-soft: #deebf4;
  --violet: #77779b;
  --coral: #9b6b76;
  --coral-soft: #f0e4e7;
  --amber: #92816d;
  --green: #42776c;
  --green-soft: #deebe7;
  --sans: "Plus Jakarta Sans", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --serif: "Newsreader", Georgia, serif;
  --mono: "Google Sans Code", ui-monospace, SFMono-Regular, Menlo, monospace;
  --max: 1280px;
  --radius-sm: 12px;
  --radius: 22px;
  --radius-lg: 32px;
  --shadow: 0 22px 64px rgba(20, 38, 61, 0.1), 0 2px 8px rgba(20, 38, 61, 0.05);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 104px; }
body {
  margin: 0;
  background: var(--surface-dim);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.58;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body, button, input, select { font-family: var(--sans); }
img { display: block; max-width: 100%; }
a { color: inherit; }
button, input, select { font: inherit; }
button, a, summary, input, select { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid color-mix(in srgb, var(--blue) 72%, white); outline-offset: 3px; }
::selection { background: var(--blue-soft); color: #203e59; }

.skip-link {
  position: fixed;
  top: 8px;
  left: 50%;
  z-index: 500;
  transform: translate(-50%, -150%);
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--ink);
  color: white;
}
.skip-link:focus { transform: translate(-50%, 0); }

.read-progress {
  position: fixed;
  inset: 0 auto auto 0;
  z-index: 300;
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, #557fa3, #77779b, #7393ad);
}

.site-nav {
  position: fixed;
  top: 16px;
  left: 16px;
  right: 16px;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 56px;
  padding: 8px 10px 8px 18px;
  border: 1px solid rgba(60, 81, 108, 0.12);
  border-radius: 999px;
  background: rgba(248, 250, 252, 0.84);
  box-shadow: 0 8px 28px rgba(20, 38, 61, 0.08);
  backdrop-filter: blur(22px) saturate(115%);
}
.brand { display: flex; align-items: center; gap: 11px; text-decoration: none; font-size: 15px; letter-spacing: -0.02em; }
.brand b { font-weight: 700; }
.brand-mark { position: relative; width: 29px; height: 29px; display: block; }
.brand-mark i { position: absolute; width: 16px; height: 16px; border: 2px solid var(--ink); border-radius: 5px; background: var(--surface); }
.brand-mark i:nth-child(1) { top: 0; left: 0; border-color: var(--blue); }
.brand-mark i:nth-child(2) { top: 4px; right: 0; border-color: var(--violet); }
.brand-mark i:nth-child(3) { bottom: 0; left: 5px; border-color: var(--ink); }
.nav-links { display: flex; align-items: center; gap: 2px; }
.nav-links a { padding: 8px 13px; border-radius: 999px; color: var(--ink-soft); font-size: 13px; font-weight: 600; text-decoration: none; }
.nav-links a:hover { background: var(--blue-soft); color: #315b7d; }
.nav-links .nav-github { margin-left: 7px; padding-inline: 16px; background: var(--ink); color: white; }
.nav-links .nav-github:hover { background: #263d5b; color: white; }

.hero {
  position: relative;
  display: grid;
  min-height: 100vh;
  overflow: hidden;
  background: linear-gradient(145deg, #f8fafc 0%, #f5f8fb 56%, #eef3f8 100%);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(72, 103, 137, 0.045) 1px, transparent 1px), linear-gradient(90deg, rgba(72, 103, 137, 0.045) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.52), transparent 78%);
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 2;
  width: min(100%, calc(var(--max) + 96px));
  margin: auto;
  padding: 142px 48px 92px;
  display: grid;
  grid-template-columns: minmax(0, 0.93fr) minmax(470px, 1.07fr);
  gap: clamp(48px, 6vw, 94px);
  align-items: center;
}
.aurora { position: absolute; pointer-events: none; border-radius: 50%; filter: blur(28px); opacity: 0.62; }
.aurora-a { top: -250px; right: -180px; width: 760px; height: 760px; background: radial-gradient(circle at 35% 42%, rgba(85, 127, 163, 0.22), rgba(119, 119, 155, 0.13) 42%, transparent 72%); }
.aurora-b { bottom: -360px; left: -220px; width: 820px; height: 820px; background: radial-gradient(circle at 60% 43%, rgba(88, 128, 159, 0.13), rgba(109, 104, 143, 0.09) 42%, transparent 72%); }

.eyebrow-chip, .section-tag, .micro-label { font-family: var(--mono); letter-spacing: 0.08em; text-transform: uppercase; }
.eyebrow-chip {
  width: max-content;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 7px 13px;
  margin-bottom: 26px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(240, 244, 248, 0.82);
  color: var(--ink-soft);
  font-size: 11px;
  font-weight: 600;
}
.eyebrow-chip span { width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 4px var(--green-soft); }
.hero h1 {
  max-width: 720px;
  margin: 0;
  font-size: clamp(52px, 5.3vw, 78px);
  font-weight: 600;
  line-height: 0.95;
  letter-spacing: -0.062em;
  text-wrap: balance;
}
.hero h1 em, .section-heading h2 em, .scaling-card h3 em {
  color: transparent;
  font-family: var(--serif);
  font-weight: 400;
  background: linear-gradient(108deg, #456f94 4%, #6f7196 48%, #708ba3 100%);
  background-clip: text;
  -webkit-background-clip: text;
}
.hero-authors { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px; margin: 24px 0 0; padding: 4px 0 4px 14px; border-left: 2px solid var(--blue); color: var(--ink-soft); font-size: 14px; line-height: 1.5; }
.hero-authors span { margin-right: 3px; color: var(--blue); font: 600 10px var(--mono); letter-spacing: 0.1em; text-transform: uppercase; }
.hero-authors b { font-weight: 600; }
.hero-authors a { text-decoration-color: color-mix(in srgb, var(--blue) 45%, transparent); text-underline-offset: 3px; transition: color 160ms ease, text-decoration-color 160ms ease; }
.hero-authors a:hover { color: var(--blue); text-decoration-color: currentColor; }
.hero-authors i { color: #aab7c5; font-style: normal; }
.hero-lede { max-width: 660px; margin: 22px 0 0; color: var(--ink-soft); font-size: 18px; line-height: 1.7; text-wrap: pretty; }
.agent-roles { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-top: 24px; }
.agent-roles article { min-width: 0; padding: 13px 14px; border: 1px solid var(--line); border-radius: 12px; background: rgba(248, 250, 252, 0.74); box-shadow: inset 0 1px rgba(255, 255, 255, 0.72); }
.agent-roles span { display: block; color: var(--blue); font: 8px var(--mono); }
.agent-roles strong { display: block; margin-top: 7px; font-size: 12px; }
.agent-roles small { display: block; margin-top: 3px; color: var(--muted); font-size: 9px; line-height: 1.35; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 34px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 13px; min-height: 48px; padding: 0 20px; border: 1px solid transparent; border-radius: 999px; font-size: 13px; font-weight: 700; text-decoration: none; transition: transform 180ms ease, background 180ms ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--ink); color: white; }
.button-primary:hover { background: #263d5b; }
.button-secondary { border-color: var(--line); background: white; color: var(--ink); }
kbd { min-width: 25px; padding: 2px 6px; border: 1px solid #bdc9d6; border-bottom-width: 2px; border-radius: 6px; background: var(--surface-1); color: var(--ink-soft); font: 600 11px/1.6 var(--mono); text-align: center; }

.hero-stage { position: relative; min-height: 590px; isolation: isolate; }
.desktop-card { position: absolute; overflow: hidden; border: 1px solid rgba(52, 76, 104, 0.2); border-radius: 18px; background: #101824; box-shadow: var(--shadow); }
.desktop-card img { width: 100%; height: 100%; object-fit: cover; }
.desktop-card-back { top: 28px; right: -16px; width: 82%; aspect-ratio: 16/9; transform: rotate(4deg); opacity: 0.82; }
.desktop-card-front { top: 170px; left: -8px; z-index: 2; width: 88%; aspect-ratio: 16/9; transform: rotate(-2.5deg); }
.desktop-label { position: absolute; left: 13px; bottom: 12px; padding: 6px 9px; border-radius: 7px; background: rgba(15, 25, 39, 0.84); color: white; font: 9px var(--mono); letter-spacing: 0.04em; text-transform: uppercase; backdrop-filter: blur(8px); }
.hero-click { position: absolute; left: 42.4%; top: 44.3%; width: 34px; height: 34px; border: 2px solid white; border-radius: 50%; transform: translate(-50%, -50%); box-shadow: 0 0 0 5px rgba(85, 127, 163, 0.82), 0 0 0 11px rgba(85, 127, 163, 0.2); }
.score-panel { position: absolute; z-index: 4; right: 0; bottom: 15px; width: min(390px, 76%); padding: 9px; border: 1px solid rgba(52, 76, 104, 0.12); border-radius: 20px; background: rgba(248, 250, 252, 0.92); box-shadow: var(--shadow); backdrop-filter: blur(18px); }
.score-row { display: grid; grid-template-columns: 1fr auto; gap: 12px; align-items: center; padding: 14px 14px; border-radius: 13px; }
.score-row + .score-row { border-top: 1px solid var(--line); }
.score-row strong { display: block; font-size: 13px; }
.score-row small { display: block; margin-top: 2px; color: var(--muted); font: 9px var(--mono); }
.score-value { color: var(--blue); font-size: 28px; font-weight: 700; letter-spacing: -0.045em; }
.score-value span { font-size: 13px; }
.cursor-trail { position: absolute; z-index: 5; top: 110px; left: 44%; width: 160px; height: 80px; border-top: 2px dashed rgba(49, 94, 119, 0.54); border-radius: 50%; transform: rotate(15deg); }
.cursor-trail i { position: absolute; width: 5px; height: 5px; border-radius: 50%; background: var(--blue); }
.cursor-trail i:nth-child(1) { left: 20%; top: -3px; opacity: 0.35; }.cursor-trail i:nth-child(2) { left: 51%; top: -12px; opacity: 0.62; }.cursor-trail i:nth-child(3) { right: 7%; top: 6px; }
.cursor-trail b { position: absolute; right: -6px; top: 5px; color: var(--ink); font-size: 25px; transform: rotate(-18deg); }

.section { padding: 118px 0; }
.section-inner { width: min(100%, var(--max)); margin: auto; padding: 0 34px; }
.section-heading { max-width: 990px; }
.section-tag { display: flex; align-items: center; gap: 10px; color: var(--blue); font-size: 11px; font-weight: 600; }
.section-tag span { display: grid; place-items: center; width: 28px; height: 28px; border: 1px solid currentColor; border-radius: 50%; }
.section-heading h2 { margin: 20px 0 22px; font-size: clamp(45px, 6vw, 82px); font-weight: 600; line-height: 0.98; letter-spacing: -0.055em; text-wrap: balance; }
.section-heading > p, .results-heading > p { max-width: 700px; color: var(--ink-soft); font-size: 17px; }

.tldr { background: var(--surface-dim); }
.quickscan { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin-top: 58px; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--line); }
.quickscan article { min-height: 225px; padding: 28px; background: rgba(248, 250, 252, 0.84); }
.quickscan article > span { color: var(--blue); font: 11px var(--mono); }
.quickscan h3 { margin: 44px 0 10px; font-size: 20px; letter-spacing: -0.03em; }
.quickscan p { margin: 0; color: var(--ink-soft); font-size: 13px; }
.loop-card { display: grid; grid-template-columns: 0.62fr 1.38fr; gap: 42px; margin-top: 24px; padding: 42px; border: 1px solid #263a53; border-radius: var(--radius-lg); background: linear-gradient(145deg, #101a2a, #15243a); color: white; box-shadow: var(--shadow); }
.micro-label { color: var(--blue); font-size: 10px; font-weight: 600; }
.loop-card .micro-label { color: #90adc5; }
.loop-copy h3 { margin: 18px 0; font: 400 34px/1.07 var(--serif); letter-spacing: -0.025em; }
.loop-copy p { color: #b5c2cf; font-size: 13px; }
.loop-result { display: grid; grid-template-columns: 1fr auto 18px 1fr auto; gap: 7px; align-items: center; margin-top: 26px; padding-top: 18px; border-top: 1px solid #34445a; font: 8px var(--mono); }
.loop-result span { color: #8292a5; }.loop-result b:first-of-type { color: #c3929c; }.loop-result b:last-of-type { color: #78ad9f; }.loop-result i { color: #6f8298; font-style: normal; text-align: center; }
.loop-demo { min-width: 0; overflow: hidden; border: 1px solid #40526a; border-radius: 20px; background: #0b111c; }
.loop-screen { position: relative; overflow: hidden; aspect-ratio: 16/9; background: #101824; }
.loop-screen::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 45%, rgba(8, 14, 24, 0.84)); pointer-events: none; }
.loop-screen img { width: 100%; height: 100%; object-fit: cover; transition: opacity 240ms ease, transform 700ms ease; }
.loop-demo.is-changing .loop-screen img { opacity: 0.48; transform: scale(1.012); }
.loop-screen-bar { position: absolute; z-index: 2; top: 12px; right: 12px; left: 12px; display: flex; justify-content: space-between; padding: 7px 9px; border-radius: 7px; background: rgba(12, 20, 33, 0.8); color: #c0ccd8; font: 7px var(--mono); backdrop-filter: blur(8px); }
.loop-event { position: absolute; z-index: 3; right: 18px; bottom: 18px; left: 18px; display: grid; grid-template-columns: auto 1fr; gap: 4px 12px; align-items: start; padding: 15px 17px; border: 1px solid rgba(151, 177, 205, 0.2); border-radius: 13px; background: rgba(15, 25, 39, 0.92); box-shadow: 0 10px 30px rgba(0, 0, 0, 0.26); backdrop-filter: blur(12px); transition: border-color 180ms ease, background 180ms ease; }
.loop-event span { grid-row: span 2; min-width: 78px; padding: 5px 7px; border-radius: 6px; background: var(--blue-soft); color: #345c7c; font: 8px var(--mono); text-align: center; }
.loop-event strong { font-size: 12px; line-height: 1.35; }.loop-event p { margin: 0; color: #aebdca; font-size: 9px; }
.loop-event[data-tone="arm"] { border-color: rgba(155, 107, 118, 0.7); background: rgba(43, 31, 43, 0.95); }.loop-event[data-tone="arm"] span { background: var(--coral-soft); color: #76515a; }
.loop-event[data-tone="success"] { border-color: rgba(86, 143, 127, 0.7); background: rgba(20, 48, 46, 0.95); }.loop-event[data-tone="success"] span { background: var(--green-soft); color: #315f55; }
.loop-controls { display: grid; grid-template-columns: 1fr auto; gap: 10px; align-items: center; padding: 11px; border-top: 1px solid #2b3b50; }
.loop-rail { display: grid; grid-template-columns: repeat(7, 1fr); gap: 5px; }
.loop-rail button { position: relative; height: 5px; overflow: hidden; padding: 0; border: 0; border-radius: 999px; background: #334359; cursor: pointer; }
.loop-rail button::after { content: ""; position: absolute; inset: 0; width: 0; border-radius: inherit; background: var(--blue); }
.loop-rail button.complete::after { width: 100%; }.loop-rail button.active::after { width: 100%; animation: loop-progress 2.6s linear; }
#loopToggle { min-width: 62px; height: 30px; border: 1px solid #40526a; border-radius: 8px; background: #17253a; color: white; font: 8px var(--mono); cursor: pointer; }
@keyframes loop-progress { from { width: 0; } to { width: 100%; } }

.results { background: var(--surface); }
.results-heading { max-width: none; display: grid; grid-template-columns: 1fr 330px; gap: 64px; align-items: end; }
.results-heading h2 { max-width: 920px; }
.results-heading > p { margin-bottom: 28px; font-size: 13px; }
.results-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 18px; margin-top: 62px; }
.result-card { grid-column: span 6; padding: 30px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface-dim); }
.card-head { display: flex; align-items: start; justify-content: space-between; gap: 22px; }
.card-head h3, .compact-card h3, .scaling-card h3 { margin: 7px 0 0; font-size: 25px; letter-spacing: -0.035em; line-height: 1.15; }
.card-head h3 a { text-decoration-thickness: 1px; text-underline-offset: 4px; }
.card-note { color: var(--muted); font: 9px var(--mono); text-transform: uppercase; }
.paired-bars { display: grid; gap: 24px; margin-top: 32px; }
.bar-group { display: grid; grid-template-columns: 135px 43px 1fr 55px; gap: 8px 10px; align-items: center; }
.bar-name { grid-row: span 2; font-size: 12px; font-weight: 600; }
.bar-series { padding: 3px 5px; border: 1px solid #cbd5df; border-radius: 999px; background: #e5ebf1; color: #536273; font: 700 8px var(--mono); letter-spacing: 0.06em; text-align: center; text-transform: uppercase; }
.bar-series.evolve { border-color: #b9c9dc; background: linear-gradient(135deg, #dcebf5, #e3e2f0); color: #405f7d; }
.bar-track { position: relative; height: 10px; overflow: hidden; border-radius: 999px; background: #dde5ed; }
.bar-fill { height: 100%; width: calc(var(--value) * 1%); min-width: 3px; border-radius: inherit; background: #8794a3; }
.bar-fill.evolve { background: linear-gradient(90deg, var(--blue), var(--violet)); }
.bar-value { font: 600 11px var(--mono); text-align: right; }
.bar-value.evolve { color: #405f7d; font-weight: 700; }
.lift-label { grid-column: 3/5; margin-top: 2px; color: var(--violet); font: 600 10px var(--mono); }
.upper-bound { display: flex; justify-content: space-between; margin-top: 25px; padding: 14px 16px; border: 1px dashed #aebccb; border-radius: 12px; background: var(--surface); }
.upper-bound span { color: var(--muted); font-size: 11px; }.upper-bound strong { color: var(--ink-soft); font: 600 13px var(--mono); }
.data-table { margin-top: 22px; border-top: 1px solid var(--line); color: var(--muted); font-size: 11px; }
.data-table summary { width: max-content; padding-top: 13px; cursor: pointer; font: 10px var(--mono); }
.data-table table { width: 100%; margin-top: 12px; border-collapse: collapse; color: var(--ink-soft); }
.data-table th, .data-table td { padding: 7px 4px; border-bottom: 1px solid var(--line); text-align: left; }
.data-table p { margin: 12px 0 0; line-height: 1.55; }
.compact-card { grid-column: span 4; display: flex; flex-direction: column; min-height: 390px; }
.compact-card h3 { max-width: 350px; font-size: 30px; }
.slope-chart { display: grid; grid-template-columns: 1fr auto 1fr; gap: 15px; align-items: center; margin-top: auto; padding-top: 55px; }
.slope-point { text-align: center; }
.slope-point strong { display: block; font-size: 48px; letter-spacing: -0.06em; }.slope-point span { color: var(--muted); font: 10px var(--mono); }
.slope-arrow { color: var(--blue); font-size: 34px; }
.scaling-card { grid-column: span 8; display: grid; grid-template-columns: 0.68fr 1.32fr; gap: 28px; }
.scaling-card h3 { margin-top: 18px; font-size: 34px; }
.scaling-card p { color: var(--ink-soft); font-size: 13px; }
.rollout-stat { display: flex; gap: 14px; align-items: center; margin-top: 31px; padding-top: 18px; border-top: 1px solid var(--line); }
.rollout-stat strong { color: var(--violet); font-size: 46px; letter-spacing: -0.07em; }.rollout-stat span { color: var(--muted); font: 9px/1.6 var(--mono); text-transform: uppercase; }
.canvas-wrap { min-width: 0; }
#scalingChart { display: block; width: 100%; height: 275px; }
.chart-legend { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 8px; color: var(--muted); font: 9px var(--mono); }
.chart-legend i { display: inline-block; width: 8px; height: 8px; margin-right: 5px; border-radius: 50%; }.legend-baseline { background: var(--ink); }.legend-arm { background: var(--violet); }.legend-wide { background: var(--blue); }
.diagnostics { margin-top: 18px; padding: 34px; border: 1px solid var(--line); border-radius: var(--radius); background: #eaf0f6; }
.diagnostics-head { display: grid; grid-template-columns: 200px 1fr; gap: 30px; align-items: start; }
.diagnostics-head h3 { max-width: 760px; margin: 0; font: 400 31px/1.1 var(--serif); }
.diagnostic-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; align-items: start; margin-top: 28px; }
.diagnostic-card { padding: 0 22px; border: 1px solid var(--line); border-radius: 16px; background: var(--surface); }
.diagnostic-card summary { display: flex; justify-content: space-between; gap: 15px; padding: 20px 0; cursor: pointer; font-weight: 700; list-style: none; }.diagnostic-card summary::-webkit-details-marker { display: none; }.diagnostic-card summary::after { content: "+"; color: var(--blue); font-size: 20px; }.diagnostic-card[open] summary::after { content: "−"; }
.diagnostic-body { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; padding: 0 0 22px; }
.metric-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 7px; }
.metric { padding: 11px; border-radius: 10px; background: var(--surface-1); }.metric span { display: block; color: var(--muted); font: 8px var(--mono); text-transform: uppercase; }.metric strong { display: block; margin-top: 4px; font-size: 17px; }
.matrix { display: grid; grid-template-columns: 55px 1fr 1fr; gap: 4px; font: 9px var(--mono); }.matrix > * { display: grid; place-items: center; min-height: 35px; border-radius: 7px; background: var(--surface-1); }.matrix .matrix-good { background: var(--green-soft); color: #276548; }.matrix .matrix-bad { background: var(--coral-soft); color: #9a4e40; }

.infra { background: linear-gradient(180deg, #edf2f7 0%, #f5f8fb 100%); }
.infra-heading { max-width: 1080px; }
.infra-layout { display: grid; gap: 16px; margin-top: 60px; }
.infra-topology { min-width: 0; padding: 28px; border: 1px solid #263a53; border-radius: var(--radius-lg); background: radial-gradient(circle at 92% 0%, rgba(119, 119, 155, 0.2), transparent 34%), linear-gradient(145deg, #101a2a, #172840); color: white; box-shadow: var(--shadow); }
.infra-map-head { display: flex; justify-content: space-between; gap: 22px; align-items: center; margin-bottom: 20px; padding-bottom: 16px; border-bottom: 1px solid #344a63; color: #8da8bc; font: 9px var(--mono); letter-spacing: 0.08em; }
.infra-map-head small { color: #75899f; font: inherit; letter-spacing: 0; }
.infra-external { position: relative; display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.infra-external::after { content: ""; position: absolute; top: 50%; left: 50%; width: 16px; border-top: 1px dashed #597089; transform: translate(-50%, -50%); }
.infra-node { position: relative; min-width: 0; padding: 18px; border: 1px solid #425872; border-radius: 14px; background: #17273b; }
.infra-node > span { display: block; color: #89a8c1; font: 8px var(--mono); letter-spacing: 0.08em; }
.infra-node > strong { display: block; margin-top: 8px; font-size: 14px; line-height: 1.25; }
.infra-node > small { display: block; margin-top: 5px; color: #9fb0c1; font: 8px/1.45 var(--mono); }
.node-control { border-color: #557fa3; background: #19304a; }
.node-model { border-color: #77779b; background: #292a46; }
.infra-link { position: relative; display: grid; place-items: center; height: 48px; color: #91a6bb; font: 7px var(--mono); letter-spacing: 0.05em; text-transform: uppercase; }
.infra-link::before { content: ""; position: absolute; top: 0; bottom: 0; left: 50%; border-left: 1px dashed #597089; }
.infra-link span { position: relative; padding: 3px 7px; border-radius: 5px; background: #142238; }
.vpc-frame { padding: 18px; border: 1px solid #557fa3; border-radius: 20px; background: rgba(10, 18, 31, 0.38); }
.vpc-label { display: flex; justify-content: space-between; gap: 18px; margin-bottom: 15px; color: #92afc7; font: 8px var(--mono); letter-spacing: 0.07em; }
.vpc-label small { color: #788da3; font: inherit; letter-spacing: 0; }
.gateway-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.node-proxy { border-color: #92816d; background: #302b2a; }
.node-proxy > span { color: #c1a681; }
.node-store { border-color: #42776c; background: #183532; }
.node-store > span { color: #7fb6aa; }
.worker-bus { position: relative; margin: 29px 0 15px; border-top: 1px solid #557fa3; text-align: center; }
.worker-bus::before, .worker-bus::after { content: ""; position: absolute; top: 0; height: 16px; border-left: 1px solid #557fa3; }
.worker-bus::before { left: 17%; }.worker-bus::after { right: 17%; }
.worker-bus span { position: relative; top: -9px; padding: 3px 8px; border-radius: 5px; background: #15253a; color: #8da8bc; font: 7px var(--mono); }
.worker-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.worker { padding: 15px; border-color: #4b627b; background: #132237; }
.worker::before { content: ""; position: absolute; top: -16px; left: 50%; height: 16px; border-left: 1px solid #557fa3; }
.worker-more { border-style: dashed; background: #1c2438; }
.infra-feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.infra-feature { display: flex; flex-direction: column; min-height: 330px; padding: 28px; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(248, 250, 252, 0.9); }
.infra-feature-index { color: var(--blue); font: 9px var(--mono); letter-spacing: 0.07em; }
.infra-feature h3 { margin: 36px 0 14px; font: 400 31px/1.04 var(--serif); letter-spacing: -0.025em; }
.infra-feature p { margin: 0; color: var(--ink-soft); font-size: 12px; }
.infra-feature > small { display: block; margin-top: auto; padding-top: 24px; color: var(--muted); font: 9px/1.55 var(--mono); }
.feature-egress { background: linear-gradient(145deg, #f4f0eb, #f8fafc 72%); }
.feature-scale { background: linear-gradient(145deg, #edf3f8, #f8fafc 72%); }
.feature-guide { border-color: #293d57; background: linear-gradient(145deg, #101a2a, #1a2c44); color: white; }
.feature-guide .infra-feature-index { color: #90adc5; }.feature-guide p { color: #b7c4d1; }
.feature-guide .button { width: 100%; margin-top: auto; background: white; color: var(--ink); }
.infra-source-link { margin-top: 13px; color: #9fb0c1; font: 9px var(--mono); text-align: center; text-underline-offset: 4px; }
.infra-caveat { margin: 0; padding: 13px 18px; border: 1px dashed #aab7c5; border-radius: 12px; background: rgba(248, 250, 252, 0.62); color: var(--ink-soft); font-size: 10px; }

.trajectory { background: var(--surface-dim); }
.case-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 42px; }
.case-tabs button { display: grid; gap: 2px; min-width: 220px; padding: 12px 16px; border: 1px solid var(--line); border-radius: 13px; background: var(--surface); color: var(--ink-soft); text-align: left; cursor: pointer; }
.case-tabs button span { font-size: 12px; font-weight: 700; }.case-tabs button small { color: var(--muted); font: 8px var(--mono); text-transform: uppercase; }
.case-tabs button[aria-selected="true"] { border-color: var(--ink); background: var(--ink); color: white; }.case-tabs button[aria-selected="true"] small { color: #b7c0bd; }
.trajectory-player { display: grid; grid-template-columns: 1.45fr 0.55fr; margin-top: 14px; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--surface); box-shadow: var(--shadow); }
.trajectory-screen { position: relative; align-self: start; overflow: hidden; aspect-ratio: 16/9; background: #101824; }
.trajectory-screen img { width: 100%; height: 100%; object-fit: contain; }
.trajectory-image-error { position: absolute; inset: 0; display: grid; place-items: center; padding: 30px; background: #101824; color: #d7e0e9; font: 11px var(--mono); text-align: center; }
.trajectory-image-error[hidden] { display: none; }
.screen-chrome { position: absolute; right: 12px; bottom: 12px; left: 12px; display: flex; justify-content: space-between; padding: 7px 10px; border-radius: 8px; background: rgba(13, 23, 36, 0.86); color: white; font: 8px var(--mono); backdrop-filter: blur(8px); }
.click-marker { position: absolute; width: 38px; height: 38px; border: 2px solid white; border-radius: 50%; transform: translate(-50%, -50%); box-shadow: 0 0 0 6px rgba(85, 127, 163, 0.84), 0 0 0 14px rgba(85, 127, 163, 0.22); pointer-events: none; }
.click-marker i { position: absolute; top: 50%; left: 50%; width: 5px; height: 5px; border-radius: 50%; background: white; transform: translate(-50%, -50%); }
.trajectory-info { display: flex; flex-direction: column; padding: 28px; border-left: 1px solid var(--line); }
.trajectory-info h3 { margin: 11px 0 8px; font-size: 26px; letter-spacing: -0.04em; line-height: 1.15; }
.trajectory-info blockquote { margin: 0; color: var(--ink-soft); font: italic 16px/1.45 var(--serif); }
.action-readout { margin-top: auto; padding-top: 24px; border-top: 1px solid var(--line); }.action-readout span { display: inline-block; padding: 5px 8px; border-radius: 6px; background: var(--blue-soft); color: #365b77; font: 8px var(--mono); }.action-readout p { margin: 10px 0 0; font-size: 13px; }
.arm-verdict { margin-top: 17px; padding: 15px; border-radius: 12px; background: var(--green-soft); color: #24583f; font-size: 10px; }.arm-verdict[hidden] { display: none; }.arm-verdict.retry { background: var(--coral-soft); color: #7c4037; }.verdict-top { display: flex; justify-content: space-between; gap: 10px; font: 8px var(--mono); }.verdict-top b { color: var(--green); }.arm-verdict.retry .verdict-top b { color: #a64e40; }.arm-verdict ul { margin: 12px 0; padding-left: 16px; }.arm-verdict p { margin: 9px 0; }.arm-verdict small { font: 8px var(--mono); }
.trajectory-controls { grid-column: 1/-1; display: grid; grid-template-columns: 44px 80px 1fr 44px auto; gap: 9px; align-items: center; padding: 15px 18px; border-top: 1px solid var(--line); }
.trajectory-controls button { height: 40px; border: 1px solid var(--line); border-radius: 9px; background: var(--surface); color: var(--ink); cursor: pointer; }.trajectory-controls button:hover { background: var(--surface-1); }.trajectory-controls .play-button { background: var(--ink); color: white; }.trajectory-controls input { width: 100%; accent-color: var(--blue); }
.speed-control { display: flex; align-items: center; gap: 7px; color: var(--muted); font: 9px var(--mono); text-transform: uppercase; }.speed-control select { height: 38px; padding: 0 28px 0 10px; border: 1px solid var(--line); border-radius: 9px; background: var(--surface); color: var(--ink); }
.trajectory-timeline { grid-column: 1/-1; display: grid; grid-template-columns: repeat(var(--timeline-count, 6), minmax(0, 1fr)); gap: 1px; border-top: 1px solid var(--line); background: var(--line); }
.trajectory-timeline button { position: relative; min-height: 76px; padding: 12px; border: 0; background: var(--surface); color: var(--muted); text-align: left; cursor: pointer; }.trajectory-timeline button:hover { background: var(--surface-1); }.trajectory-timeline button.active { background: var(--ink); color: white; }.trajectory-timeline button span { display: block; font: 9px var(--mono); }.trajectory-timeline button small { display: -webkit-box; overflow: hidden; margin-top: 6px; font-size: 10px; line-height: 1.35; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }.trajectory-timeline button.checkpoint::after { content: "ARM"; position: absolute; top: 8px; right: 8px; padding: 2px 5px; border-radius: 4px; background: var(--green-soft); color: var(--green); font: 7px var(--mono); }

footer { padding: 96px 0 48px; background: #101a2a; color: white; }
.footer-inner { width: min(100%, var(--max)); margin: auto; padding: 0 34px; display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 72px; align-items: end; }
.footer-citation { min-width: 0; }
.footer-citation-head { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 18px; }.footer-citation-head span, .footer-meta span { color: #8da8bc; font: 9px var(--mono); letter-spacing: 0.12em; text-transform: uppercase; }.footer-citation-head h2 { margin: 7px 0 0; font: 400 34px/1.1 var(--serif); }.footer-citation-head button { flex: 0 0 auto; padding: 8px 11px; border: 1px solid rgba(193, 204, 215, 0.3); border-radius: 7px; background: transparent; color: white; font: 10px var(--mono); cursor: pointer; }.footer-citation-head button:hover { background: rgba(255, 255, 255, 0.12); }
.footer-citation pre { overflow-x: auto; margin: 0; padding: 20px; border: 1px solid rgba(193, 204, 215, 0.22); border-radius: 12px; background: rgba(255, 255, 255, 0.06); color: #dce5ed; font: 11px/1.7 var(--mono); }
.footer-meta { display: flex; flex-direction: column; align-items: start; gap: 9px; padding-bottom: 4px; color: #c1ccd7; font-size: 12px; }.footer-meta span:not(:first-child) { margin-top: 20px; }.footer-meta a { overflow-wrap: anywhere; text-underline-offset: 4px; }

.reveal { opacity: 0; transform: translateY(12px); transition: opacity 620ms cubic-bezier(0.2, 0, 0, 1), transform 620ms cubic-bezier(0.2, 0, 0, 1); }
.reveal.is-visible { opacity: 1; transform: none; }

@media (max-width: 1050px) {
  .hero-inner { grid-template-columns: 1fr; padding-top: 145px; }
  .hero-copy { max-width: 780px; }
  .hero-stage { width: min(760px, 100%); min-height: 610px; margin: 0 auto; }
  .results-heading { grid-template-columns: 1fr; gap: 4px; }
  .results-heading > p { margin: 0; }
  .result-card { grid-column: span 12; }
  .compact-card { grid-column: span 5; }
  .scaling-card { grid-column: span 7; grid-template-columns: 1fr; }
  .loop-card { grid-template-columns: 1fr; }
  .infra-feature-grid { grid-template-columns: 1fr 1fr; }.feature-guide { grid-column: 1/-1; min-height: 300px; }
  .trajectory-player { grid-template-columns: 1fr; }
  .trajectory-info { min-height: 410px; border-top: 1px solid var(--line); border-left: 0; }
}

@media (max-width: 760px) {
  .site-nav { left: 10px; right: 10px; top: 10px; min-height: 52px; padding-left: 14px; }
  .brand { font-size: 13px; }.brand-mark { width: 25px; height: 25px; }.brand-mark i { width: 14px; height: 14px; }
  .nav-links a:not(.nav-github) { display: none; }.nav-links .nav-github { margin: 0; padding: 8px 13px; font-size: 11px; }
  .hero-inner { padding: 122px 20px 70px; gap: 42px; }
  .hero h1 { font-size: clamp(45px, 12.5vw, 64px); }
  .hero-lede { font-size: 16px; }
  .agent-roles { grid-template-columns: 1fr; }.agent-roles article { display: grid; grid-template-columns: 24px 82px 1fr; gap: 5px; align-items: center; }.agent-roles strong, .agent-roles small { margin: 0; }
  .hero-stage { min-height: 420px; }
  .desktop-card-back { right: -8px; width: 87%; }.desktop-card-front { top: 122px; width: 92%; }
  .score-panel { bottom: 0; width: 92%; }.cursor-trail { display: none; }
  .score-value { font-size: 23px; }
  .section { padding: 82px 0; }.section-inner { padding: 0 18px; }
  .section-heading h2 { font-size: clamp(43px, 13vw, 64px); }
  .quickscan { grid-template-columns: 1fr; }.quickscan article { min-height: auto; }.quickscan h3 { margin-top: 24px; }
  .loop-card { padding: 24px 18px; }.loop-event { right: 10px; bottom: 10px; left: 10px; padding: 11px; }.loop-event span { min-width: 62px; }.loop-event p { display: none; }.loop-result { grid-template-columns: 1fr auto 12px 1fr auto; }
  .results-grid { margin-top: 42px; }.result-card { padding: 22px; }.card-head { display: block; }.card-note { display: block; margin-top: 8px; }
  .bar-group { grid-template-columns: 98px 41px 1fr 49px; gap: 8px; }
  .compact-card, .scaling-card { grid-column: span 12; min-height: auto; }.slope-chart { padding-top: 42px; }.slope-point strong { font-size: 39px; }
  .diagnostics { padding: 24px 16px; }.diagnostics-head, .diagnostic-grid { grid-template-columns: 1fr; }.diagnostic-body { grid-template-columns: 1fr; }
  .infra-layout { margin-top: 42px; }.infra-topology { padding: 18px; }.infra-map-head { display: grid; gap: 5px; }.infra-external, .gateway-row { grid-template-columns: 1fr; }.infra-external::after { display: none; }.worker-grid { grid-template-columns: 1fr; }.worker-bus::before, .worker-bus::after { display: none; }.worker::before { display: none; }.vpc-label { display: grid; gap: 4px; }.infra-feature-grid { grid-template-columns: 1fr; }.infra-feature, .feature-guide { grid-column: auto; min-height: 300px; padding: 24px 20px; }.infra-feature h3 { margin-top: 28px; font-size: 29px; }
  .case-tabs button { flex: 1 1 100%; }.trajectory-info { min-height: 430px; padding: 22px; }.trajectory-controls { grid-template-columns: 40px 72px 1fr 40px; padding: 12px; }.speed-control { grid-column: 1/-1; justify-content: end; }.trajectory-timeline { grid-template-columns: repeat(3, 1fr); }.trajectory-timeline button { min-height: 64px; }
  footer { padding-top: 72px; }.footer-inner { grid-template-columns: 1fr; gap: 42px; padding: 0 18px; }.footer-citation-head { align-items: center; }.footer-citation-head h2 { font-size: 29px; }.footer-citation pre { padding: 16px; font-size: 9px; }.footer-meta { padding-bottom: 0; }
}

@media (max-width: 430px) {
  .hero-actions { flex-direction: column; align-items: stretch; }.button { width: 100%; }
  .hero-stage { min-height: 360px; }.desktop-card-front { top: 104px; }.score-panel { width: 100%; bottom: -5px; }.score-row { padding: 10px; }.score-value { font-size: 20px; }
  .loop-card { padding: 20px 13px; }.loop-screen-bar { display: none; }.loop-event strong { font-size: 10px; }.loop-result span { display: none; }
  .scaling-card h3 { font-size: 29px; }.rollout-stat strong { font-size: 39px; }
  .trajectory-controls { grid-template-columns: 38px 65px 1fr 38px; gap: 6px; }.trajectory-timeline button small { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
  .reveal { opacity: 1; transform: none; }
}