:root {
  color-scheme: dark;
  --bg: #0a0e17; --card: #0f141f; --line: #1c2434; --bot: #141b29;
  --fg: #f3f4f6; --fg2: #9aa4b2; --muted: #8a93a1;
  --blue: #3b82f6; --blue-h: #2563eb; --tint: #c7d7ff;
  --serif: "Instrument Serif", "Playfair Display", "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --sans: Inter, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { animation: none !important; transition: none !important; } }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.6 var(--sans); }
a { color: var(--blue); }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; border-radius: 6px; }
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.eyebrow { font: 600 11px/1 var(--sans); text-transform: uppercase; letter-spacing: .18em; color: var(--muted); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; }

/* header */
.top { position: sticky; top: 0; z-index: 10; background: rgba(10, 14, 23, .85); backdrop-filter: blur(8px); }
.top-in { height: 64px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand { font-weight: 700; font-size: 15px; color: var(--fg); text-decoration: none; }
.links { display: flex; gap: 28px; }
.links a { color: var(--fg2); text-decoration: none; font-size: 14px; }
.links a:hover { color: var(--fg); }
.pill-btn { background: var(--blue); color: #fff; text-decoration: none; font-size: 14px; font-weight: 600;
  padding: 8px 16px; border-radius: 999px; }
.pill-btn:hover { background: var(--blue-h); }

/* hero */
.hero { display: grid; grid-template-columns: 48fr 52fr; gap: 48px; align-items: center; padding-top: 72px; padding-bottom: 48px; }
.status { display: inline-flex; align-items: center; gap: 8px; border: 1px solid var(--line); border-radius: 999px;
  padding: 4px 12px; font-size: 13px; color: var(--fg2); }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--blue); }
h1 { font: 400 64px/1.05 var(--serif); margin: 24px 0; letter-spacing: -.01em; }
h1 em { color: var(--tint); }
.intro { font-size: 18px; color: var(--fg2); max-width: 32rem; }
.intro strong { color: var(--fg); }

/* chat card */
.chat { padding: 20px; display: flex; flex-direction: column; gap: 12px; }
.chat-head { display: flex; align-items: center; gap: 12px; padding-bottom: 12px; border-bottom: 1px solid var(--line); }
.avatar { width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center; font-size: 12px; font-weight: 700;
  background: rgba(59, 130, 246, .18); color: var(--tint); flex: none; }
.chat-title { font-weight: 700; font-size: 15px; }
.chat-sub { font-size: 12px; color: var(--muted); }
.log { min-height: 260px; max-height: 420px; overflow-y: auto; display: flex; flex-direction: column; gap: 10px; }
.msg { margin: 0; padding: 10px 14px; border-radius: 12px; max-width: 85%; white-space: pre-wrap; overflow-wrap: anywhere; font-size: 15px; }
.msg.bot { background: var(--bot); color: var(--fg2); align-self: flex-start; }
.msg.you { background: var(--blue); color: #fff; align-self: flex-end; }
.msg.err { background: none; color: var(--muted); font-size: 13px; padding: 0 4px; }
.typing span { display: inline-block; width: 6px; height: 6px; margin: 0 2px; border-radius: 50%; background: var(--fg2);
  animation: blink 1.2s infinite; }
.typing span:nth-child(2) { animation-delay: .2s; } .typing span:nth-child(3) { animation-delay: .4s; }
@keyframes blink { 0%, 80%, 100% { opacity: .25; } 40% { opacity: 1; } }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips button { font: 13px var(--sans); color: var(--fg2); background: none; border: 1px solid var(--line); border-radius: 999px;
  padding: 5px 12px; cursor: pointer; }
.chips button:hover { color: var(--fg); border-color: var(--fg2); }
.ask { display: flex; gap: 8px; }
.ask input { flex: 1; min-width: 0; font: 15px var(--sans); color: var(--fg); background: var(--bg); border: 1px solid var(--line);
  border-radius: 999px; padding: 10px 16px; }
.ask input::placeholder { color: var(--muted); }
.send { flex: none; width: 42px; height: 42px; border-radius: 999px; border: 0; background: var(--blue); color: #fff;
  display: grid; place-items: center; cursor: pointer; }
.send:hover { background: var(--blue-h); }
.send:disabled { opacity: .5; cursor: wait; }
.fine { margin: 0; font-size: 11px; color: var(--muted); }

/* sections */
.section { padding-top: 120px; }
.sec-head { display: flex; align-items: center; gap: 14px; margin-bottom: 28px; }
.num { font: italic 400 28px/1 var(--serif); color: var(--fg2); }
.rule { flex: 1; height: 1px; background: var(--line); }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); }
.stats div { padding: 24px; display: flex; flex-direction: column; gap: 8px; }
.stats div + div { border-left: 1px solid var(--line); }
.stats b { font: 400 28px/1 var(--serif); }
.ico { width: 18px; height: 18px; fill: none; stroke: var(--fg2); stroke-width: 1.6; stroke-linejoin: round; stroke-linecap: round; flex: none; }
.papers { list-style: none; margin: 16px 0 0; padding: 0; }
.papers li { display: grid; grid-template-columns: 44px 22px 1fr auto; align-items: center; gap: 10px; padding: 16px 20px; }
.papers li + li { border-top: 1px solid var(--line); }
.yr, .pv { font-size: 12px; color: var(--muted); }
.pt { font-size: 15px; }
.ventures { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.venture { padding: 24px; }
.v-top { display: flex; justify-content: space-between; align-items: center; }
.tag { font-size: 12px; color: var(--fg2); border: 1px solid var(--line); border-radius: 999px; padding: 2px 10px; }
.venture h3 { font: 400 28px/1.15 var(--serif); margin: 18px 0 4px; }
.role { color: var(--blue); font-size: 13px; margin: 0 0 8px; }
.venture p:last-child { color: var(--fg2); margin: 0; }
.timeline { list-style: none; margin: 0; padding: 0 0 0 28px; border-left: 1px solid var(--line); }
.timeline li { position: relative; display: flex; flex-direction: column; padding-bottom: 28px; }
.timeline li::before { content: ""; position: absolute; left: -35px; top: 4px; width: 12px; height: 12px; border-radius: 50%;
  border: 2px solid var(--blue); background: var(--bg); }
.when { font-size: 12px; color: var(--muted); }
.org { color: var(--blue); font-size: 13px; }
.foot { padding-top: 72px; padding-bottom: 40px; font-size: 13px; color: var(--muted); }

/* generated pages (resume, articles) */
.doc { max-width: 46rem; padding-top: 32px; padding-bottom: 72px; }
.doc h1 { font-size: 44px; }
.doc h2 { font: 400 28px/1.2 var(--serif); margin: 40px 0 8px; }
.doc h3 { font-size: 16px; margin: 24px 0 4px; }
.doc p, .doc li { color: var(--fg2); }
.doc ul { padding-left: 1.2rem; }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; padding-top: 40px; }
  .ventures { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .wrap { padding: 0 16px; }
  .links { display: none; }
  h1 { font-size: 40px; }
  .section { padding-top: 72px; }
  .stats { grid-template-columns: 1fr 1fr; }
  .stats div + div { border-left: 0; }
  .stats div:nth-child(even) { border-left: 1px solid var(--line); }
  .stats div:nth-child(n+3) { border-top: 1px solid var(--line); }
  .papers li { grid-template-columns: 40px 1fr; padding: 14px 16px; }
  .papers .ico, .papers .pv { display: none; }
  .doc h1 { font-size: 36px; }
}

@media print {
  :root { --bg: #fff; --fg: #111; --fg2: #333; --muted: #555; --line: #ccc; }
  .top { display: none; }
  body { font-size: 11pt; }
  .doc { padding: 0; max-width: none; }
  .doc h1 { font-size: 28pt; margin-top: 0; }
  .doc h2 { font-size: 16pt; margin-top: 18pt; }
  .doc h3 { break-after: avoid; }
}

/* experience details + skills strip */
.desc { color: var(--fg2); font-size: 14px; margin-top: 4px; max-width: 46rem; }
.skills { display: grid; grid-template-columns: 140px 1fr; gap: 12px 24px; margin: 0; }
.skills dt { font: 600 11px/1.9 var(--sans); text-transform: uppercase; letter-spacing: .18em; color: var(--muted); }
.skills dd { margin: 0; color: var(--fg2); }
@media (max-width: 640px) { .skills { grid-template-columns: 1fr; gap: 2px; } .skills dd { margin-bottom: 12px; } }
.pv { text-align: right; max-width: 280px; }
.more { margin: 12px 0 0; font-size: 14px; }
.more a { text-decoration: none; }