:root {
  --bg: #0b0b0d;
  --bg-raised: #131317;
  --bg-card: #16161b;
  --line: #24242b;
  --line-strong: #34343d;
  --text: #ecebe6;
  --text-dim: #a3a29c;
  --text-faint: #6c6b66;
  --teal: #5dcaa5;
  --violet: #8f87e6;
  --coral: #f0997b;
  --sans: "Space Grotesk", ui-sans-serif, system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --max: 1080px;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
h1, h2, h3 { font-weight: 500; letter-spacing: -0.02em; margin: 0; }
p { margin: 0; }
.mono { font-family: var(--mono); }

.skip {
  position: absolute; left: -999px; top: 8px;
  background: var(--teal); color: #04342c; padding: 8px 12px; border-radius: 6px; z-index: 50;
}
.skip:focus { left: 16px; }

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

/* dots */
.dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; }
.dot-teal { background: var(--teal); }
.dot-violet { background: var(--violet); }
.dot-coral { background: var(--coral); }

/* nav */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px max(16px, calc((100vw - var(--max)) / 2));
  background: rgba(11, 11, 13, 0.72);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}
.nav.scrolled { border-bottom-color: var(--line); }
.brand { display: flex; align-items: center; gap: 4px; text-decoration: none; }
.brand .dot { width: 7px; height: 7px; }
.brand-name { margin-left: 8px; font-weight: 600; letter-spacing: -0.02em; }
.nav nav { display: flex; gap: 22px; font-family: var(--mono); font-size: 13px; }
.nav nav a { text-decoration: none; color: var(--text-dim); transition: color 0.15s; }
.nav nav a:hover { color: var(--text); }

/* hero */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex; align-items: center;
  padding: 120px max(16px, calc((100vw - var(--max)) / 2)) 96px;
  overflow: hidden;
}
#latent { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(90deg, var(--bg) 0%, rgba(11, 11, 13, 0.75) 35%, rgba(11, 11, 13, 0) 60%);
}
.hero-copy, .legend, .tip { z-index: 2; }
.hero-copy { position: relative; max-width: 620px; pointer-events: none; }
.hero-copy a { pointer-events: auto; }
.eyebrow { color: var(--text-faint); font-size: 13px; margin-bottom: 20px; }
.hero h1 { font-size: clamp(44px, 7vw, 84px); line-height: 1.02; letter-spacing: -0.035em; }
.tagline { margin-top: 22px; font-size: 15px; color: var(--teal); }
.prompt { color: var(--text-faint); }
.caret { animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.lede { margin-top: 22px; color: var(--text-dim); font-size: 18px; max-width: 560px; }

.cta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 32px; }
.btn {
  display: inline-flex; align-items: center;
  padding: 10px 16px; border-radius: 8px;
  border: 1px solid var(--line-strong);
  background: rgba(19, 19, 23, 0.8);
  text-decoration: none; font-size: 15px;
  transition: border-color 0.15s, background 0.15s, transform 0.15s;
}
.btn:hover { border-color: var(--text-faint); background: var(--bg-card); }
.btn:active { transform: scale(0.98); }
.btn-primary { background: var(--teal); border-color: var(--teal); color: #04342c; font-weight: 500; }
.btn-primary:hover { background: #7dd8b8; border-color: #7dd8b8; }

.legend {
  position: absolute; left: max(16px, calc((100vw - var(--max)) / 2)); bottom: 28px;
  display: flex; flex-wrap: wrap; gap: 18px; font-size: 12px; color: var(--text-faint);
}
.legend span { display: inline-flex; align-items: center; gap: 7px; }
.legend .dot { width: 7px; height: 7px; }
.legend .hint { color: var(--text-faint); opacity: 0.7; }

.tip {
  position: absolute; z-index: 5; pointer-events: none;
  padding: 8px 10px; border-radius: 8px;
  background: var(--bg-raised); border: 1px solid var(--line-strong);
  font-size: 12px; line-height: 1.5; color: var(--text);
  opacity: 0; transform: translateY(4px); transition: opacity 0.12s, transform 0.12s;
  max-width: 240px;
}
.tip.on { opacity: 1; transform: none; }
.tip b { font-weight: 500; display: block; }
.tip span { color: var(--text-dim); }

/* sections */
.section {
  max-width: var(--max); margin: 0 auto;
  padding: 112px 16px 0;
}
.section-head { margin-bottom: 40px; }
.idx { font-size: 13px; color: var(--text-faint); margin-bottom: 10px; }
.section h2 { font-size: clamp(30px, 4vw, 42px); line-height: 1.1; }

/* projects */
.project {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 32px;
  margin-bottom: 20px;
  transition: border-color 0.2s, transform 0.2s;
}
.project:hover { border-color: var(--line-strong); }
.project::before {
  content: ""; position: absolute; left: 0; top: 32px; bottom: 32px; width: 2px;
  background: var(--accent, var(--teal)); border-radius: 0;
}
.project[data-cluster="violet"] { --accent: var(--violet); }
.project-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; font-size: 12px; color: var(--text-faint); margin-bottom: 18px; }
.coord { margin-left: auto; }
.tag { padding: 3px 9px; border-radius: 999px; font-size: 12px; }
.tag-teal { background: rgba(93, 202, 165, 0.12); color: var(--teal); }
.tag-violet { background: rgba(143, 135, 230, 0.14); color: #aaa4ef; }
.project h3 { font-size: 30px; }
.project-sub { color: var(--text); margin-top: 6px; font-size: 18px; }
.project > p:not(.project-sub):not(.spark-label) { color: var(--text-dim); margin-top: 16px; max-width: 760px; }

.metrics {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px;
  margin: 28px 0 0;
}
.metrics div { background: var(--bg-raised); border-radius: 10px; padding: 14px 16px; }
.metrics dt { font-family: var(--mono); font-size: 11px; color: var(--text-faint); }
.metrics dd { margin: 4px 0 0; font-size: 26px; font-weight: 500; letter-spacing: -0.02em; }

.spark { width: 100%; height: 48px; margin-top: 22px; display: block; }
.spark polyline { fill: none; stroke: var(--teal); stroke-width: 1.5; vector-effect: non-scaling-stroke; }
.spark-label { font-size: 11px; color: var(--text-faint); margin-top: 6px; }

.council {
  position: relative; height: 120px; margin-top: 22px;
  border: 1px dashed var(--line-strong); border-radius: 12px;
}
.council .node {
  position: absolute; font-family: var(--mono); font-size: 12px;
  padding: 5px 10px; border-radius: 999px;
  background: rgba(143, 135, 230, 0.14); color: #c3beF5;
  border: 1px solid rgba(143, 135, 230, 0.35);
  transform: translate(-50%, -50%);
}
.council .n1 { left: 18%; top: 30%; }
.council .n2 { left: 50%; top: 70%; }
.council .n3 { left: 82%; top: 30%; }
.council .human { left: 50%; top: 22%; background: rgba(240, 153, 123, 0.12); color: var(--coral); border-color: rgba(240, 153, 123, 0.4); }
.council::before, .council::after {
  content: ""; position: absolute; top: 30%; height: 1px; background: var(--line-strong);
}
.council::before { left: 18%; right: 18%; }
.council::after { left: 50%; width: 1px; height: 40%; top: 30%; }

.stack-list { list-style: none; padding: 0; margin: 24px 0 0; display: flex; flex-wrap: wrap; gap: 8px; font-size: 12px; }
.stack-list li { padding: 4px 10px; border: 1px solid var(--line-strong); border-radius: 6px; color: var(--text-dim); }

.links { display: flex; gap: 22px; margin-top: 24px; }
.links a { text-decoration: none; color: var(--text); border-bottom: 1px solid var(--line-strong); padding-bottom: 2px; transition: border-color 0.15s, color 0.15s; }
.project[data-cluster="teal"] .links a:hover { color: var(--teal); border-color: var(--teal); }
.project[data-cluster="violet"] .links a:hover { color: var(--violet); border-color: var(--violet); }

/* timeline */
.log { list-style: none; margin: 0; padding: 0 0 0 28px; position: relative; }
.log::before { content: ""; position: absolute; left: 5px; top: 8px; bottom: 8px; width: 1px; background: var(--line-strong); }
.log li { position: relative; padding-bottom: 36px; }
.log li:last-child { padding-bottom: 0; }
.log li::before {
  content: ""; position: absolute; left: -28px; top: 6px;
  width: 11px; height: 11px; border-radius: 50%;
  background: var(--bg); border: 2px solid var(--teal);
}
.log li:first-child::before { background: var(--teal); box-shadow: 0 0 0 5px rgba(93, 202, 165, 0.15); }
.epoch { font-size: 12px; color: var(--teal); }
.log h3 { font-size: 21px; margin-top: 4px; }
.org { color: var(--text-faint); font-weight: 400; font-size: 16px; margin-left: 6px; }
.log p:not(.epoch) { color: var(--text-dim); margin-top: 6px; max-width: 720px; }

/* stack */
.stack-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.stack-card { background: var(--bg-card); border: 1px solid var(--line); border-radius: 14px; padding: 22px; }
.stack-title { font-size: 13px; display: flex; align-items: center; gap: 8px; margin-bottom: 10px; }
.stack-card p:not(.stack-title) { color: var(--text-dim); }

/* contact */
.contact { padding-bottom: 40px; }
.contact h2 { font-size: clamp(36px, 6vw, 60px); }

.footer {
  max-width: var(--max); margin: 96px auto 0; padding: 24px 16px 40px;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px;
  border-top: 1px solid var(--line);
  font-size: 12px; color: var(--text-faint);
}

/* reveal */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: none; }

@media (max-width: 760px) {
  body { font-size: 16px; }
  .nav nav { gap: 14px; font-size: 12px; }
  .nav nav a[href="#stack"] { display: none; }
  .hero { padding-top: 104px; align-items: flex-end; padding-bottom: 120px; }
  .hero::after { background: linear-gradient(180deg, rgba(11, 11, 13, 0) 30%, rgba(11, 11, 13, 0.85) 46%, var(--bg) 60%); }
  .lede { font-size: 16px; }
  .project { padding: 24px 20px; }
  .project::before { top: 24px; bottom: 24px; }
  .coord { display: none; }
  .project h3 { font-size: 25px; }
  .metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .metrics dd { font-size: 22px; }
  .stack-grid { grid-template-columns: 1fr; }
  .legend { gap: 12px; bottom: 20px; }
  .legend .hint { display: none; }
  .section { padding-top: 88px; }
  .council .node { font-size: 11px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .caret { animation: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
}