:root {
  color-scheme: dark;
  --bg: #0b1020;
  --panel: #121a2d;
  --text: #edf1fb;
  --muted: #b0bbd1;
  --accent: #84e4c3;
  --line: #29334a;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 30px; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.65 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent); }
a:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; }
::selection { background: var(--accent); color: var(--bg); }
.container { width: min(1180px, calc(100% - 64px)); margin-inline: auto; }
.site-header { width: min(1320px, calc(100% - 64px)); margin-inline: auto; min-height: 100px; display: flex; align-items: center; justify-content: space-between; gap: 24px; border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; align-items: center; gap: 10px; font-size: 23px; font-weight: 750; letter-spacing: -.7px; }
.brand-mark { display: grid; place-items: center; width: 35px; height: 35px; border: 1px solid var(--accent); border-radius: 10px; color: var(--accent); font-size: 22px; }
nav { display: flex; align-items: center; gap: 28px; font-size: 14px; color: var(--muted); }
.nav-github { color: var(--text); border: 1px solid var(--line); padding: 9px 16px; border-radius: 7px; }
.skip-link { position: absolute; top: -100px; left: 20px; padding: 12px 20px; background: var(--accent); color: var(--bg); z-index: 10; }
.skip-link:focus { top: 12px; }
.hero { display: grid; grid-template-columns: 1.2fr 1fr; gap: 55px; align-items: center; padding-block: 94px 75px; }
.eyebrow { color: var(--accent); font-size: 11px; font-weight: 700; letter-spacing: 2px; margin: 0 0 22px; }
.status-dot { display: inline-block; background: var(--accent); width: 7px; height: 7px; border-radius: 50%; margin-right: 7px; box-shadow: 0 0 14px #84e4c34d; }
h1, h2, h3, p { margin-top: 0; }
h1 { font-size: clamp(42px, 4.9vw, 66px); letter-spacing: -3px; line-height: 1.07; margin-bottom: 28px; }
h1 span { color: var(--accent); }
h2 { font-size: clamp(30px, 3.5vw, 45px); letter-spacing: -1.7px; line-height: 1.14; margin-bottom: 22px; }
h3 { font-size: 20px; letter-spacing: -.45px; line-height: 1.4; }
p { color: var(--muted); }
.hero-description { font-size: 18px; line-height: 1.8; max-width: 560px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.button { display: inline-flex; gap: 20px; align-items: center; justify-content: center; padding: 13px 20px; border-radius: 7px; font-size: 14px; font-weight: 650; }
.primary { background: var(--accent); color: #10211e; border: 1px solid var(--accent); }
.primary:hover { color: #10211e; background: #a8f2d8; }
.secondary { border: 1px solid #46516a; }
.hero-note { font-size: 12px; margin: 20px 0 0; }
.graph-card { border: 1px solid var(--line); border-radius: 15px; background: radial-gradient(ellipse at 50% 48%, #183943 0, var(--panel) 65%); padding: 22px 18px 16px; box-shadow: 0 24px 90px #0004; }
.card-topline { display: flex; justify-content: space-between; gap: 10px; align-items: center; font-size: 9px; letter-spacing: 1.5px; color: var(--muted); }
.tiny-pill { border: 1px solid #46516a; border-radius: 20px; padding: 3px 8px; font-size: 8px; letter-spacing: .5px; }
.graph-scene { position: relative; height: 340px; }
.graph-lines { position: absolute; width: 100%; height: 100%; }
.graph-lines path { fill: none; stroke: #84e4c36b; stroke-width: 1.3; }
.graph-lines circle { fill: none; stroke: #84e4c31c; stroke-dasharray: 4 7; }
.graph-node { position: absolute; transform: translate(-50%, -50%); width: 130px; border: 1px solid #41546b; border-radius: 9px; padding: 11px 10px; text-align: center; background: #121c30; }
.graph-node small { display: block; font-size: 8px; letter-spacing: 1.5px; color: var(--accent); margin-bottom: 4px; }
.graph-node strong { font-size: 12px; font-weight: 600; }
.node-top-left { top: 19%; left: 18%; }
.node-top-right { top: 20%; left: 80%; }
.node-center { top: 49%; left: 50%; border-color: var(--accent); background: #183537; width: 120px; }
.node-center > span { display: block; color: var(--accent); font-size: 28px; line-height: 1.3; }
.node-bottom-left { top: 78%; left: 18%; }
.node-bottom-right { top: 79%; left: 80%; }
.node-bottom { top: 96%; left: 50%; width: 110px; padding: 7px; }
.graph-caption { margin-top: 32px; border-top: 1px solid var(--line); padding-top: 15px; font-size: 11px; color: var(--muted); }
.principles { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 20px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding-block: 22px; font-size: 12px; letter-spacing: .5px; color: var(--muted); }
.section { padding-block: 90px; }
.section-heading { max-width: 640px; margin-bottom: 42px; }
.section-heading > p:last-child { font-size: 17px; }
.cards { display: grid; gap: 18px; }
.four-columns { grid-template-columns: repeat(4, 1fr); }
.three-columns { grid-template-columns: repeat(3, 1fr); }
.feature-card { padding: 28px 24px; border: 1px solid var(--line); border-radius: 10px; background: linear-gradient(145deg, #141d30, #0e1526); }
.feature-card p { font-size: 14px; margin-bottom: 0; }
.card-number { display: inline-block; color: var(--accent); border: 1px solid #345951; border-radius: 6px; padding: 4px 10px; font-size: 12px; margin-bottom: 24px; }
.card-label { display: block; font-size: 10px; letter-spacing: 1.3px; color: var(--accent); margin-bottom: 25px; }
.text-link { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.integration-cards .feature-card { display: flex; flex-direction: column; }
.integration-status { align-self: flex-start; border: 1px solid #345951; color: var(--accent); padding: 4px 8px; border-radius: 5px; font-size: 9px; letter-spacing: .7px; margin-bottom: 22px; }
.integration-status.planned { border-color: #635a40; color: #efd391; }
.integration-role { display: block; margin-top: auto; padding-top: 20px; color: var(--muted); font-size: 11px; }
.solution-section { border-block: 1px solid var(--line); background: #0f1628; }
.pipeline { list-style: none; display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; padding: 0; margin: 0; }
.pipeline li { border-top: 1px solid #46516a; padding-top: 22px; }
.step { display: block; color: var(--accent); font-size: 12px; margin-bottom: 20px; }
.pipeline p { font-size: 14px; }
.pipeline code { font-family: inherit; color: var(--accent); font-size: 10px; line-height: 1.7; display: block; }
.context-panel { margin-top: 55px; padding: 36px; border: 1px solid #36544e; border-radius: 12px; display: grid; grid-template-columns: 1fr 1fr; gap: 50px; background: linear-gradient(110deg, #173032, #121b2c); }
.context-panel h3 { font-size: 28px; line-height: 1.2; }
.context-panel p { font-size: 14px; margin-bottom: 0; }
.context-panel .eyebrow { font-size: 9px; margin-bottom: 20px; }
.query-examples { align-self: center; }
.query-examples p { padding-block: 13px; border-bottom: 1px solid #3a4e59; color: var(--text); }
.query-examples span { color: var(--accent); margin-right: 12px; }
.evidence-note { margin-top: 28px; border-left: 3px solid var(--accent); padding: 15px 22px; color: var(--muted); font-size: 13px; background: var(--panel); }
.evidence-note strong { color: var(--text); }
.contribute-panel { padding: 55px; border: 1px solid #3d655a; border-radius: 15px; background: radial-gradient(ellipse at 90% 0, #224d46, var(--panel) 65%); }
.contribute-panel p:not(.eyebrow) { max-width: 710px; }
.repositories { padding-top: 42px; }
.repositories > p { font-size: 14px; }
.repo-links { display: grid; grid-template-columns: repeat(4, 1fr); gap: 15px; }
.repo-links a { border: 1px solid var(--line); padding: 20px 16px; border-radius: 8px; min-width: 0; overflow-wrap: anywhere; }
.repo-links a > span { display: block; font-size: 10px; color: var(--muted); margin-bottom: 5px; }
.repo-links strong { font-size: 12px; }
footer { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 20px; padding-block: 35px; border-top: 1px solid var(--line); }
footer p, footer > a:last-child { font-size: 12px; margin: 0; color: var(--muted); }
@media (max-width: 1000px) {
  .hero { gap: 32px; grid-template-columns: 1fr 1fr; }
  h1 { letter-spacing: -2px; }
  .four-columns, .repo-links { grid-template-columns: repeat(2, 1fr); }
  .graph-node { width: 110px; }
  .graph-node strong { font-size: 10px; }
  .pipeline { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 760px) {
  .container, .site-header { width: calc(100% - 40px); }
  .site-header { flex-wrap: wrap; padding-block: 20px; gap: 20px; }
  nav { flex-wrap: wrap; gap: 18px; font-size: 12px; }
  .nav-github { padding: 5px 10px; }
  .hero { grid-template-columns: 1fr; padding-block: 55px; gap: 40px; }
  h1 { font-size: clamp(40px, 8vw, 60px); }
  .hero-description { font-size: 16px; }
  .graph-card { max-width: 490px; width: 100%; justify-self: center; }
  .graph-node { width: 120px; }
  .section { padding-block: 60px; }
  .three-columns, .context-panel { grid-template-columns: 1fr; }
  .context-panel { gap: 24px; padding: 26px; }
  .contribute-panel { padding: 30px 24px; }
  .principles { display: grid; grid-template-columns: 1fr 1fr; font-size: 11px; }
}
@media (max-width: 430px) {
  .four-columns, .pipeline, .repo-links { grid-template-columns: 1fr; }
  .graph-node { width: 100px; padding: 10px 6px; }
  .graph-node strong { font-size: 10px; }
  .graph-card { padding-inline: 12px; }
  .card-topline { letter-spacing: .7px; font-size: 8px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }