/* ═══════════════════════════════════════════════════════════
   Fan Ma — personal site
   ═══════════════════════════════════════════════════════════ */

:root {
  --yale: #00356b;
  --yale-2: #286dc0;
  --sky: #7cc4ff;
  --amber: #ffb547;
  --mint: #5ef2c2;
  --rose: #ff7aa8;

  --serif: "Gambetta", "Iowan Old Style", Georgia, serif;
  --sans: "General Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
  /* labels use the UI face, not a monospace */
  --mono: "General Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;

  --radius: 18px;
  --ease: cubic-bezier(.2, .8, .2, 1);
  --max: 1180px;
}

html[data-theme="dark"] {
  --bg: #0b0c10;
  --m1: #3a3ad6; --m2: #0e8f95; --m3: #b8742c; --m4: #1f4fd1; --mesh-o: .32;
  --bg-2: #0a0f1c;
  --panel: rgba(255, 255, 255, .035);
  --panel-2: rgba(255, 255, 255, .06);
  --line: rgba(255, 255, 255, .09);
  --line-2: rgba(255, 255, 255, .16);
  --fg: #eef2fa;
  --fg-2: #a8b3c7;
  --fg-3: #6b7790;
  --accent: var(--sky);
  --accent-2: var(--amber);
  --glow: rgba(124, 196, 255, .22);
  color-scheme: dark;
}

html[data-theme="light"] {
  --bg: #f4f2ee;
  --m1: #cfcaff; --m2: #bdeee6; --m3: #ffd9ad; --m4: #c3d6ff; --mesh-o: .7;
  --bg-2: #ecebe5;
  --panel: rgba(0, 53, 107, .035);
  --panel-2: rgba(0, 53, 107, .06);
  --line: rgba(10, 20, 40, .1);
  --line-2: rgba(10, 20, 40, .18);
  --fg: #0b1526;
  --fg-2: #3e4a5f;
  --fg-3: #77819a;
  --accent: var(--yale);
  --accent-2: #c76a00;
  --glow: rgba(0, 53, 107, .14);
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 400 16px/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  transition: background .5s var(--ease), color .5s var(--ease);
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
p a, .about a, .section__aside a {
  color: var(--accent);
  background: linear-gradient(currentColor, currentColor) 0 100% / 0 1px no-repeat;
  transition: background-size .35s var(--ease);
}
p a:hover, .about a:hover, .section__aside a:hover { background-size: 100% 1px; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
::selection { background: var(--accent); color: var(--bg); }

.mono { font-family: var(--mono); letter-spacing: 0; }
.wrap { width: min(var(--max), 100% - 48px); margin-inline: auto; }

/* mesh background: slow-drifting blurred colour fields */
.mesh { position: fixed; inset: 0; z-index: -2; overflow: hidden; pointer-events: none; }
.mesh i {
  position: absolute; width: 62vmax; height: 62vmax; border-radius: 50%;
  filter: blur(100px); opacity: var(--mesh-o); will-change: transform;
  animation: drift 42s ease-in-out infinite alternate;
}
.mesh i:nth-child(1) { background: var(--m1); left: -14vmax; top: -22vmax; }
.mesh i:nth-child(2) { background: var(--m2); right: -20vmax; top: 2vmax; animation-duration: 54s; animation-delay: -14s; }
.mesh i:nth-child(3) { background: var(--m3); left: 18vmax; bottom: -34vmax; width: 52vmax; height: 52vmax; animation-duration: 61s; animation-delay: -27s; }
.mesh i:nth-child(4) { background: var(--m4); right: 6vmax; bottom: -18vmax; width: 40vmax; height: 40vmax; animation-duration: 47s; animation-delay: -8s; }
@keyframes drift {
  0%   { transform: translate3d(0, 0, 0) scale(1); }
  50%  { transform: translate3d(9vmax, 7vmax, 0) scale(1.14); }
  100% { transform: translate3d(-7vmax, 11vmax, 0) scale(.94); }
}

/* film grain */
.grain {
  position: fixed; inset: -50%; z-index: 100; pointer-events: none; opacity: .03;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation: grain 1.2s steps(6) infinite;
}
html[data-theme="light"] .grain { opacity: .06; }
@keyframes grain {
  0% { transform: translate(0, 0); } 20% { transform: translate(-3%, 2%); }
  40% { transform: translate(2%, -3%); } 60% { transform: translate(-2%, -1%); }
  80% { transform: translate(3%, 3%); } 100% { transform: translate(0, 0); }
}

.progress {
  position: fixed; top: 0; left: 0; height: 2px; width: 100%; z-index: 60;
  transform-origin: 0 50%; transform: scaleX(0);
  background: linear-gradient(90deg, var(--yale-2), var(--accent), var(--accent-2));
}

/* ───────── NAV ───────── */
.nav {
  position: fixed; top: 14px; left: 50%; z-index: 50;
  transform: translateX(-50%);
  width: min(1554px, 100% - 28px); /* logo lines up with the hero text */
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 8px 10px 8px 16px;
  border: 1px solid transparent; border-radius: 999px;
  transition: background .4s var(--ease), border-color .4s var(--ease), backdrop-filter .4s;
}
.nav.is-stuck {
  background: color-mix(in srgb, var(--bg) 70%, transparent);
  border-color: var(--line);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
}
.nav__logo { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; font-size: 15px; }
.nav__logo i { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }
@keyframes pulse { 50% { opacity: .35; transform: scale(.75); } }
.nav__links { display: flex; gap: 4px; }
.nav__links a {
  position: relative; padding: 7px 13px; border-radius: 999px;
  font-size: 14px; color: var(--fg-2); transition: color .25s, background .25s;
}
.nav__links a:hover { color: var(--fg); background: var(--panel-2); }
.nav__links a.is-active { color: var(--fg); }
.nav__links a.is-active::after {
  content: ""; position: absolute; left: 50%; bottom: 2px; width: 4px; height: 4px; margin-left: -2px;
  border-radius: 50%; background: var(--accent);
}
.nav__actions { display: flex; align-items: center; gap: 6px; }
.icon-btn {
  width: 38px; height: 38px; display: grid; place-items: center;
  border-radius: 50%; color: var(--fg-2); transition: background .25s, color .25s, transform .4s var(--ease);
}
.icon-btn:hover { background: var(--panel-2); color: var(--fg); }
#themeToggle:hover { transform: rotate(25deg); }
html[data-theme="dark"] .i-moon, html[data-theme="light"] .i-sun { display: none; }
.nav__burger { display: none; }
.nav__burger span { display: block; width: 16px; height: 1.5px; background: currentColor; transition: transform .3s var(--ease); }
.nav__burger span + span { margin-top: 5px; }
.nav__burger { flex-direction: column; justify-content: center; align-items: center; }

/* ───────── PILLS ───────── */
.pill {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 18px; border-radius: 999px; font-size: 14px; font-weight: 500;
  transition: background .3s var(--ease), color .3s, border-color .3s, transform .3s var(--ease);
  will-change: transform;
}
.pill--solid { background: var(--fg); color: var(--bg); }
.pill--solid span { transition: transform .3s var(--ease); }
.pill--solid:hover span { transform: translateX(4px); }
.pill--ghost { border: 1px solid var(--line-2); color: var(--fg); }
.pill--ghost:hover { border-color: var(--accent); color: var(--accent); }
.nav .pill { padding: 7px 14px; font-size: 13px; }

/* ───────── HERO ───────── */
.hero {
  position: relative; min-height: 100svh; display: flex; align-items: center;
  padding: 120px 0 90px; overflow: hidden; isolation: isolate;
}
#field { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -1; }
.hero__inner { display: block; }
.hero .wrap { width: min(1520px, 100% - 64px); }
.hero__text { max-width: 760px; }

/* identity row — small photo + name */
.id { display: flex; align-items: center; gap: 14px; margin-bottom: clamp(36px, 6vh, 64px); }
.id__avatar { position: relative; flex: none; width: 58px; height: 58px; border-radius: 50%; }
.id__avatar img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 22%; border-radius: 50%;  }
.id__avatar::after { content: none; }
.id__name { margin: 0; font-size: 21px; font-weight: 600; letter-spacing: -.02em; line-height: 1.2; }
.id__meta p { margin: 2px 0 0; font-size: 13.5px; color: var(--fg-3); }
.id__meta b { color: var(--fg-2); font-weight: 500; }

.hero__title {
  margin: 0 0 0 -.04em;
  font: 400 clamp(88px, 11.5vw, 176px)/.88 var(--serif); letter-spacing: -.035em; color: var(--fg);
}
.hero__title em {
  font-style: italic; font-weight: 300;
  color: var(--accent);
}
.hero__statement {
  margin: 34px 0 0; max-width: 30ch;
  font: 300 clamp(20px, 1.9vw, 26px)/1.42 var(--serif); color: var(--fg-2); letter-spacing: -.01em;
}
.hero__foot { display: flex; align-items: center; gap: 28px; flex-wrap: wrap; margin-top: 40px; }
.hero__foot .hero__cta { margin: 0; }
.hero__note { margin: 0; font-size: 12px; color: var(--fg-3); letter-spacing: .04em; }
.hero__sublabel { color: var(--fg-3); }

/* research pillars in the hero */
.approach { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; margin-bottom: 56px; }
.approach .pillar { grid-column: span 2; }
.approach .pillar--mission, .approach .pillar--core { grid-column: span 3; padding: 20px 22px 22px; }
.pillar--mission { border-color: color-mix(in srgb, var(--mint) 35%, var(--line)); }
.pillar--core { border-color: color-mix(in srgb, var(--accent) 35%, var(--line)); }
.approach .pillar--mission canvas, .approach .pillar--core canvas { height: 120px; }
.approach .pillar--mission h3, .approach .pillar--core h3 { font: 400 30px/1.1 var(--serif); letter-spacing: -.01em; }
.approach .pillar--mission p, .approach .pillar--core p { font-size: 14px; color: var(--fg-2); max-width: 46ch; line-height: 1.55; margin-top: 4px; }
.pillar__kicker { font-size: 13px; color: var(--fg-3); margin-bottom: 10px; }
.pillar--mission .pillar__kicker { color: color-mix(in srgb, var(--mint) 70%, var(--fg-3)); }
.pillar--core .pillar__kicker { color: var(--accent); }
.subhead { margin: 0 0 16px; font-size: 12px; color: var(--fg-3); letter-spacing: .06em; }
.pillar {
  position: relative; text-align: left; padding: 12px 14px 14px; border-radius: 16px; overflow: hidden;
  background: color-mix(in srgb, var(--bg) 72%, transparent); border: 1px solid var(--line);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  display: flex; flex-direction: column; gap: 2px;
  transition: transform .5s var(--ease), border-color .4s, background .4s;
}
.pillar:hover { transform: translateY(-3px); border-color: var(--line-2); }
.pillar canvas { width: 100%; height: 72px; display: block; margin-bottom: 10px; border-radius: 10px; background: var(--bg-2); border: 1px solid var(--line); }
.pillar h3 { margin: 0; font-size: 14px; font-weight: 500; letter-spacing: -.01em; line-height: 1.3; }
.pillar p { margin: 0; font-size: 12.5px; color: var(--fg-3); }
.pillar__count { margin-top: 8px; font-size: 11px; color: var(--accent); opacity: .75; transition: opacity .3s, transform .3s var(--ease); }
.pillar:hover .pillar__count { opacity: 1; transform: translateX(3px); }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px; margin: 0 0 22px;
  padding: 6px 14px 6px 10px; border: 1px solid var(--line-2); border-radius: 999px;
  font-size: 13px; color: var(--fg-2); background: var(--panel);
  backdrop-filter: blur(6px);
}
.eyebrow .dot { display: none; }
.hero__sub { margin: 26px 0 0; font: 500 15px/1.4 var(--mono); color: var(--fg-2); }
.scramble { color: var(--accent); }
.caret { display: inline-block; width: 8px; height: 1.05em; margin-left: 3px; vertical-align: -2px; background: var(--accent); animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.hero__lede { max-width: 540px; margin: 16px 0 0; color: var(--fg-2); font-size: 17px; }
.hero__lede strong { color: var(--fg); font-weight: 500; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }

.hero__scroll {
  position: absolute; left: 50%; bottom: 24px; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px; font-size: 11px; color: var(--fg-3);
  letter-spacing: .02em;
}
.hero__scroll span { width: 1px; height: 38px; background: linear-gradient(var(--accent), transparent); animation: drop 2s var(--ease) infinite; transform-origin: top; }
@keyframes drop { 0% { transform: scaleY(0); } 50% { transform: scaleY(1); } 100% { transform: scaleY(1); opacity: 0; } }

/* ───────── MARQUEE ───────── */
.marquee {
  border-block: 1px solid var(--line); overflow: hidden; padding: 18px 0;
  mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}
.marquee__track { display: flex; width: max-content; animation: marquee 38s linear infinite; }
.marquee__track span {
  padding: 0 34px; font: 400 32px/1 var(--serif); color: var(--fg-3); white-space: nowrap;
  display: inline-flex; align-items: center; gap: 34px;
}
.marquee__track span::after { content: "✦"; font-size: 14px; color: var(--accent); opacity: .7; }
.marquee:hover .marquee__track { animation-play-state: paused; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ───────── SECTIONS ───────── */
.section { padding: clamp(80px, 11vw, 140px) 0 0; }
.section__head { display: flex; align-items: baseline; gap: 18px; margin-bottom: 44px; flex-wrap: wrap; }
.section__head h2 { margin: 0; font: 400 clamp(40px, 5.5vw, 68px)/1 var(--serif); letter-spacing: -.02em; }
.section__no { font-size: 13px; color: var(--accent); padding: 4px 9px; border: 1px solid var(--line-2); border-radius: 999px; transform: translateY(-10px); }
.section__aside { margin: 0 0 0 auto; color: var(--fg-3); font-size: 14px; }

/* reveal */
.reveal { opacity: 0; transform: translateY(26px); filter: blur(6px); transition: opacity .9s var(--ease), transform .9s var(--ease), filter .9s var(--ease); transition-delay: var(--d, 0s); }
.reveal.is-in { opacity: 1; transform: none; filter: none; }

/* ───────── ABOUT ───────── */
.about { display: grid; grid-template-columns: 1.5fr 1fr; gap: clamp(32px, 6vw, 80px); align-items: start; }
.about__bio p { margin: 0 0 18px; color: var(--fg-2); font-size: 17px; }
.about__bio p.big { font: 400 clamp(24px, 2.6vw, 34px)/1.25 var(--serif); color: var(--fg); letter-spacing: -.005em; }
.chips { list-style: none; padding: 0; margin: 26px 0 0; display: flex; flex-wrap: wrap; gap: 8px; }
.chips li { padding: 6px 13px; font-size: 13px; border: 1px solid var(--line-2); border-radius: 999px; color: var(--fg-2); transition: .3s var(--ease); }
.chips li:hover { color: var(--bg); background: var(--accent); border-color: var(--accent); transform: translateY(-2px); }
.stats { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.stat { padding: 26px 22px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--panel); }
.stat:nth-child(2n) { border-right: 0; }
.stat:nth-last-child(-n+2) { border-bottom: 0; }
.stat b { display: block; font: 400 56px/1 var(--serif); letter-spacing: -.02em; color: var(--fg); }
.stat b::after { content: attr(data-suffix); color: var(--accent); }
.stat span { display: block; margin-top: 8px; color: var(--fg-3); font-size: 13px; line-height: 1.35; }
.stat small { font-size: 11px; opacity: .8; }

/* ───────── NEWS ───────── */
.news { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.news li {
  display: grid; grid-template-columns: 120px 1fr; gap: 24px; align-items: baseline;
  padding: 20px 8px; border-bottom: 1px solid var(--line); position: relative;
  transition: background .3s, padding .4s var(--ease);
}
.news li:hover { background: var(--panel); padding-left: 18px; }
.news li::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 2px; background: var(--accent);
  transform: scaleY(0); transition: transform .4s var(--ease);
}
.news li:hover::before { transform: scaleY(1); }
.news time { color: var(--accent); font-size: 13px; }
.news p { margin: 0; color: var(--fg-2); }
.news b { color: var(--fg); font-weight: 500; }
.hl { font: 500 11px var(--mono); padding: 2px 7px; border-radius: 6px; color: var(--accent-2); background: color-mix(in srgb, var(--accent-2) 14%, transparent); }

/* ───────── RESEARCH HIGHLIGHTS ───────── */
.bento { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.hl-card {
  position: relative; display: flex; flex-direction: column; gap: 12px; padding: 24px; overflow: hidden;
  border-radius: var(--radius); background: var(--panel); border: 1px solid var(--line);
  transition: transform .5s var(--ease), border-color .4s;
}
.hl-card::after {
  content: ""; position: absolute; left: 0; top: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--c), transparent 70%); opacity: .8;
}
.hl-card:hover { transform: translateY(-4px); border-color: color-mix(in srgb, var(--c) 40%, var(--line)); }
.hl-card--wide { grid-column: span 2; grid-row: span 2; padding: 30px; }
.hl-card__top { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; }
.tag { font-size: 11px; padding: 3px 9px; border-radius: 999px; color: var(--c); background: color-mix(in srgb, var(--c) 13%, transparent); }
.hl-card .venue { font-size: 11px; }
.hl-card h3 { margin: 0; font-size: 16px; font-weight: 500; line-height: 1.35; color: var(--fg-2); letter-spacing: -.01em; }
.hl-card__name { display: block; margin-bottom: 4px; font: 400 32px/1.05 var(--serif); color: var(--fg); letter-spacing: -.01em; }
.hl-card--wide .hl-card__name { font-size: clamp(48px, 6vw, 76px); margin-bottom: 10px; }
.hl-card--wide h3 { font-size: 19px; max-width: 30ch; }
.hl-card p { margin: 0; color: var(--fg-3); font-size: 14.5px; line-height: 1.6; }
.hl-card--wide p { font-size: 16px; max-width: 52ch; margin-top: 14px; color: var(--fg-2); }
.hl-card__body { display: flex; flex-direction: column; justify-content: space-between; gap: 28px; flex: 1; }
.hl-card__stat { padding-top: 22px; border-top: 1px dashed var(--line-2); }
.hl-card__stat b { display: block; font: 400 clamp(56px, 7vw, 96px)/.9 var(--serif); letter-spacing: -.03em; color: var(--c); }
.hl-card__stat span { display: block; margin-top: 8px; font: 500 12px var(--mono); color: var(--fg-3); }
.hl-card__links { margin-top: auto; display: flex; gap: 6px; }
.hl-card__links a { font: 500 12px var(--mono); padding: 4px 10px; border-radius: 6px; background: var(--panel-2); color: var(--fg-2); transition: .25s; }
.hl-card__links a:hover { background: var(--c); color: #05070d; }

/* cursor spotlight on cards */
.spot::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none; opacity: 0; transition: opacity .4s;
  background: radial-gradient(420px circle at var(--x, 50%) var(--y, 50%), var(--glow), transparent 45%);
}
.spot:hover::before { opacity: 1; }

/* ───────── PUBLICATIONS ───────── */
.pubbar { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-bottom: 14px; }
.seg { position: relative; display: inline-flex; padding: 4px; border-radius: 999px; background: var(--panel-2); border: 1px solid var(--line); }
.seg__btn { position: relative; z-index: 1; padding: 7px 16px; font-size: 13px; font-weight: 500; color: var(--fg-2); border-radius: 999px; transition: color .3s; }
.seg__btn.is-on { color: var(--bg); }
.seg__glider { position: absolute; top: 4px; bottom: 4px; left: 4px; border-radius: 999px; background: var(--fg); transition: transform .45s var(--ease), width .45s var(--ease); }
.topics { display: flex; flex-wrap: wrap; gap: 6px; }
.topic {
  display: inline-flex; align-items: center; gap: 7px; padding: 7px 13px; font-size: 13px;
  border-radius: 999px; border: 1px solid var(--line); color: var(--fg-2); transition: .3s var(--ease);
}
.topic i { width: 7px; height: 7px; border-radius: 50%; background: var(--c); }
.topic:hover { border-color: var(--line-2); color: var(--fg); }
.topic.is-on { border-color: var(--c); color: var(--fg); background: color-mix(in srgb, var(--c) 14%, transparent); }
.search {
  margin-left: auto; display: flex; align-items: center; gap: 8px; padding: 8px 12px; min-width: 260px;
  border-radius: 999px; border: 1px solid var(--line); color: var(--fg-3); transition: border-color .3s;
}
.search:focus-within { border-color: var(--accent); }
.search input { flex: 1; min-width: 0; border: 0; outline: 0; background: none; color: var(--fg); font: inherit; font-size: 14px; }
.search input::-webkit-search-cancel-button { display: none; }
.search kbd { font-size: 11px; padding: 1px 6px; border: 1px solid var(--line-2); border-radius: 5px; }
.pubcount { margin: 0 0 8px; font-size: 12px; color: var(--fg-3); }

.year { display: grid; grid-template-columns: 110px 1fr; gap: 24px; border-top: 1px solid var(--line); }
.year__label { position: sticky; top: 90px; align-self: start; padding-top: 22px; font: 400 44px/1 var(--serif); color: var(--fg-3); }
.pub {
  position: relative; display: grid; grid-template-columns: 1fr auto; gap: 6px 24px;
  padding: 22px 14px; margin: 0 -14px; border-radius: 14px;
  transition: background .3s, transform .5s var(--ease), opacity .5s var(--ease);
}
.pub + .pub { border-top: 1px dashed var(--line); }
.pub:hover { background: var(--panel); }
.pub.enter { opacity: 0; transform: translateY(12px); }
.pub__title { margin: 0; font-size: 17px; font-weight: 500; line-height: 1.38; letter-spacing: -.01em; grid-column: 1; }
.pub__authors { margin: 0; grid-column: 1; color: var(--fg-3); font-size: 14px; line-height: 1.5; }
.pub__authors .me { color: var(--fg); font-weight: 600; background: linear-gradient(transparent 62%, color-mix(in srgb, var(--accent) 30%, transparent) 62%); }
.pub__authors .more { color: var(--accent); cursor: pointer; font-family: var(--mono); font-size: 12px; }
.pub__meta { grid-column: 2; grid-row: 1 / span 3; display: flex; flex-direction: column; align-items: flex-end; gap: 6px; text-align: right; }
.venue { font: 500 12px var(--mono); padding: 4px 10px; border-radius: 8px; border: 1px solid var(--line-2); white-space: nowrap; color: var(--fg); }
.venue--top { border-color: color-mix(in srgb, var(--accent) 55%, transparent); color: var(--accent); }
.pub__note { font: 500 12.5px var(--mono); color: var(--accent-2); }
.pub__links { grid-column: 1; display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; align-items: center; }
.pub__links a { font: 500 12px var(--mono); padding: 3px 9px; border-radius: 6px; background: var(--panel-2); color: var(--fg-2); transition: .25s; }
.pub__links a:hover { background: var(--accent); color: var(--bg); }
.pub__dots { display: inline-flex; gap: 5px; margin-left: 4px; }
.pub__dots i { width: 6px; height: 6px; border-radius: 50%; background: var(--c); opacity: .9; }
.pub__first { font: 500 11px var(--mono); color: var(--fg-3); }
.empty { padding: 40px 0; color: var(--fg-3); text-align: center; }
mark { background: color-mix(in srgb, var(--accent-2) 35%, transparent); color: inherit; border-radius: 3px; }

/* ───────── TIMELINE ───────── */
.timeline { list-style: none; margin: 0; padding: 0 0 0 24px; position: relative; }
.timeline::before { content: ""; position: absolute; left: 4px; top: 8px; bottom: 8px; width: 1px; background: linear-gradient(var(--accent), var(--line) 70%); }
.timeline li { position: relative; display: grid; grid-template-columns: 150px 1fr; gap: 20px; padding: 16px 0; }
.timeline li::before {
  content: ""; position: absolute; left: -24px; top: 23px; width: 9px; height: 9px; border-radius: 50%;
  background: var(--bg); border: 2px solid var(--accent);
}
.timeline li:first-child::before { background: var(--accent); }
.timeline li > span { color: var(--fg-3); font-size: 13px; padding-top: 4px; }
.timeline h4 { margin: 0; font-size: 19px; font-weight: 500; letter-spacing: -.01em; }
.timeline p { margin: 2px 0 0; color: var(--fg-2); font-size: 15px; }
.timeline li.is-minor h4 { font-size: 16px; color: var(--fg-2); }
.timeline li.is-minor p { font-size: 14px; color: var(--fg-3); }
.timeline li.is-minor::before { border-color: var(--fg-3); width: 7px; height: 7px; left: -23px; top: 22px; }

/* ───────── CONTACT ───────── */
.contact { padding: clamp(110px, 14vw, 180px) 0 90px; text-align: center; display: flex; flex-direction: column; align-items: center; }
.contact__title { margin: 0; font: 400 clamp(44px, 7vw, 96px)/1 var(--serif); letter-spacing: -.025em; }
.contact__title em { color: var(--accent); }
.contact__mail {
  position: relative; margin-top: 40px; display: inline-flex; flex-direction: column; align-items: center; gap: 6px;
  padding: 18px 30px; border-radius: 999px; border: 1px solid var(--line-2); font-size: clamp(16px, 2vw, 22px);
  transition: border-color .3s, background .3s;
}
.contact__mail:hover { border-color: var(--accent); background: var(--panel); }
.contact__copy { font-size: 12.5px; color: var(--fg-3); }
.socials { list-style: none; padding: 0; margin: 36px 0 0; display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 26px; }
.socials a { position: relative; color: var(--fg-2); font-size: 15px; transition: color .3s; }
.socials a::after { content: ""; position: absolute; left: 0; right: 0; bottom: -3px; height: 1px; background: var(--accent); transform: scaleX(0); transform-origin: right; transition: transform .4s var(--ease); }
.socials a:hover { color: var(--fg); }
.socials a:hover::after { transform: scaleX(1); transform-origin: left; }

.footer { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; padding: 26px 0 34px; border-top: 1px solid var(--line); font-size: 12px; color: var(--fg-3); }
.footer a:hover { color: var(--accent); }

.toast {
  position: fixed; left: 50%; bottom: 28px; z-index: 80; transform: translate(-50%, 30px); opacity: 0;
  padding: 10px 18px; border-radius: 999px; font-size: 13px; background: var(--fg); color: var(--bg);
  transition: .45s var(--ease); pointer-events: none;
}
.toast.is-on { opacity: 1; transform: translate(-50%, 0); }

/* ───────── RESPONSIVE ───────── */
@media (max-width: 1099px) {
  .hero { padding-bottom: 400px; }
  .hero__scroll { display: none; }
}
@media (max-width: 940px) {
  .nav__links {
    position: fixed; top: 64px; left: 0; right: 0; flex-direction: column; gap: 0; padding: 10px;
    border-radius: 22px; background: color-mix(in srgb, var(--bg) 92%, transparent); border: 1px solid var(--line);
    backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
    opacity: 0; pointer-events: none; transform: translateY(-8px); transition: .35s var(--ease);
  }
  .nav__links a { padding: 12px 16px; font-size: 16px; }
  .nav.is-open .nav__links { opacity: 1; pointer-events: auto; transform: none; }
  .nav.is-open { background: color-mix(in srgb, var(--bg) 85%, transparent); border-color: var(--line); backdrop-filter: blur(14px); }
  .nav.is-open .nav__burger span:first-child { transform: translateY(3.25px) rotate(45deg); }
  .nav.is-open .nav__burger span:last-child { transform: translateY(-3.25px) rotate(-45deg); }
  .nav__burger { display: flex; }
  .hero__inner { grid-template-columns: 1fr; }
  .about { grid-template-columns: 1fr; }
  .bento { grid-template-columns: 1fr 1fr; }
  .approach { grid-template-columns: repeat(2, 1fr); }
  .approach .pillar { grid-column: span 1; }
  .approach .pillar--mission, .approach .pillar--core { grid-column: span 2; }
  .search { margin-left: 0; width: 100%; }
}
@media (max-width: 640px) {
  .wrap { width: calc(100% - 32px); }
  .hero { padding-top: 96px; }
  .hero__sub { font-size: 13px; min-height: 2.8em; }
  .id__avatar { width: 50px; height: 50px; }
  .id__name { font-size: 19px; }
  .pillars { gap: 10px; }
  .approach { grid-template-columns: 1fr 1fr; }
  .approach .pillar { grid-column: span 1; padding: 12px; }
  .approach .pillar--mission, .approach .pillar--core { grid-column: 1 / -1; }
  .pillar canvas { height: 56px; }
  .approach .pillar--mission h3, .approach .pillar--core h3 { font-size: 24px; }
  .hero__statement { font-size: 20px; }
  .bento { grid-template-columns: 1fr; }
  .hl-card--wide { grid-column: auto; grid-row: auto; padding: 24px; }
  .nav .pill { display: none; }
  .news li { grid-template-columns: 1fr; gap: 4px; }
  .year { grid-template-columns: 1fr; gap: 0; }
  .year__label { position: static; font-size: 34px; padding-top: 18px; }
  .pub { grid-template-columns: 1fr; }
  .pub__meta { grid-column: 1; grid-row: auto; flex-direction: row; align-items: center; order: -1; }
  .timeline li { grid-template-columns: 1fr; gap: 2px; }
  .stat b { font-size: 44px; }
  .search kbd { display: none; }
  .marquee__track span { font-size: 24px; padding: 0 20px; gap: 20px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; filter: none; }
}

/* light theme: deepen the neon topic colors for contrast */
html[data-theme="light"] .tag,
html[data-theme="light"] .hl-card__stat b { color: color-mix(in srgb, var(--c) 50%, #0b1526); }
html[data-theme="light"] .hl-card__links a:hover { color: #0b1526; }