/* =========================================================
   Fried Lab — site styles
   Colors, fonts and spacing live in the tokens below.
   ========================================================= */
:root {
  --bg: #05070e;
  --bg-2: #0a0e1a;
  --surface: rgba(255, 255, 255, 0.035);
  --surface-2: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.08);
  --border-2: rgba(255, 255, 255, 0.16);
  --text: #e8ebf4;
  --muted: #9aa3b8;
  --faint: #626b82;
  --cyan: #22d3ee;
  --violet: #8b5cf6;
  --pink: #f472b6;
  --grad: linear-gradient(120deg, var(--cyan), var(--violet) 55%, var(--pink));
  --radius: 18px;
  --radius-sm: 10px;
  --max: 1180px;
  /* Display font. To go back to Space Grotesk: font "Space Grotesk", weight 600, tracking -0.02em */
  --font-display: "Permanent Marker", "Space Grotesk", system-ui, sans-serif;
  --display-weight: 400;
  --display-tracking: 0.01em;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 16px/1.65 var(--font-body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
p a, .prose a { color: var(--cyan); text-decoration: underline; text-decoration-color: rgba(34, 211, 238, 0.35); text-underline-offset: 3px; }
p a:hover, .prose a:hover { text-decoration-color: var(--cyan); }
::selection { background: rgba(139, 92, 246, 0.45); }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; border-radius: 6px; }

/* ---------- ambient background ---------- */
.bg-fx { position: fixed; inset: 0; z-index: -1; pointer-events: none; overflow: hidden; }
.bg-fx::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.028) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 30%, transparent 75%);
}
.bg-fx .orb { position: absolute; border-radius: 50%; filter: blur(90px); opacity: 0.35; }
.bg-fx .orb.a { width: 560px; height: 560px; background: var(--violet); top: -220px; left: -160px; }
.bg-fx .orb.b { width: 480px; height: 480px; background: var(--cyan); top: 10%; right: -200px; opacity: 0.2; }
.bg-fx .orb.c { width: 520px; height: 520px; background: var(--pink); bottom: -300px; left: 30%; opacity: 0.14; }

/* ---------- layout ---------- */
.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 24px; }
section { padding: 96px 0; position: relative; }
.section-tight { padding: 56px 0; }

/* ---------- typography ---------- */
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: var(--display-weight); line-height: 1.12; letter-spacing: var(--display-tracking); margin: 0 0 0.5em; }
h1 { font-size: clamp(2.6rem, 6.2vw, 4.9rem); }
h2 { font-size: clamp(1.9rem, 3.6vw, 2.9rem); }
h3 { font-size: 1.3rem; }
p { margin: 0 0 1em; }
.lead { font-size: clamp(1.05rem, 1.6vw, 1.25rem); color: var(--muted); max-width: 62ch; }
.muted { color: var(--muted); }
.grad-alt { background: linear-gradient(120deg, var(--pink), var(--violet) 50%, var(--cyan)) !important; -webkit-background-clip: text !important; background-clip: text !important; }
.grad-text { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font: 500 0.75rem/1 var(--font-mono); letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--cyan); margin-bottom: 20px;
}
.eyebrow::before { content: ""; width: 22px; height: 1px; background: currentColor; }
.section-head { max-width: 760px; margin-bottom: 48px; }

/* ---------- nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: saturate(160%) blur(16px); -webkit-backdrop-filter: saturate(160%) blur(16px);
  background: rgba(5, 7, 14, 0.62);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, background .3s;
}
.nav.scrolled { border-bottom-color: var(--border); background: rgba(5, 7, 14, 0.8); }
.nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 24px; }
.brand { display: flex; align-items: center; gap: 12px; font-family: var(--font-display); font-weight: var(--display-weight); font-size: 1.15rem; letter-spacing: var(--display-tracking); white-space: nowrap; }
.brand img { width: 46px; height: auto; transition: transform .4s cubic-bezier(.2,.8,.2,1); }
.brand:hover img { transform: rotate(-4deg) scale(1.06); }
.brand small { display: block; font: 500 0.62rem/1.2 var(--font-mono); color: var(--faint); letter-spacing: 0.12em; text-transform: uppercase; margin-top: 2px; }
.nav-links { display: flex; align-items: center; gap: 4px; list-style: none; margin: 0; padding: 0; }
.nav-links a {
  display: block; padding: 8px 14px; border-radius: 999px;
  font-size: 0.92rem; color: var(--muted); transition: color .2s, background .2s;
}
.nav-links a:hover { color: var(--text); background: var(--surface-2); }
.nav-links a.active { color: var(--text); background: var(--surface-2); box-shadow: inset 0 0 0 1px var(--border); }
.nav-links .nav-cta a { color: #05070e; background: var(--text); font-weight: 600; margin-left: 8px; }
.nav-links .nav-cta a:hover { background: #fff; }
.menu-btn { display: none; background: none; border: 1px solid var(--border-2); color: var(--text); width: 44px; height: 44px; border-radius: 12px; cursor: pointer; }
.menu-btn svg { width: 20px; height: 20px; }

@media (max-width: 900px) {
  .menu-btn { display: grid; place-items: center; }
  .nav-links {
    position: fixed; inset: 72px 0 auto 0; flex-direction: column; align-items: stretch; gap: 2px;
    padding: 12px 16px 24px; background: rgba(5, 7, 14, 0.97); border-bottom: 1px solid var(--border);
    transform: translateY(-8px); opacity: 0; pointer-events: none; transition: opacity .2s, transform .2s;
  }
  .nav.open .nav-links { opacity: 1; transform: none; pointer-events: auto; }
  .nav-links a { padding: 14px 16px; font-size: 1.05rem; }
  .nav-links .nav-cta a { margin: 8px 0 0; text-align: center; }
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 13px 22px; border-radius: 999px; font-weight: 600; font-size: 0.95rem;
  border: 1px solid var(--border-2); background: var(--surface); color: var(--text);
  transition: transform .2s, background .2s, border-color .2s, box-shadow .2s; cursor: pointer;
}
.btn:hover { transform: translateY(-2px); background: var(--surface-2); border-color: rgba(255,255,255,.28); }
.btn-primary { background: var(--grad); border: 0; color: #fff; box-shadow: 0 10px 40px -10px rgba(139, 92, 246, .7); }
.btn-primary:hover { box-shadow: 0 16px 50px -10px rgba(139, 92, 246, .9); background: var(--grad); }
.btn svg { width: 16px; height: 16px; }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }

/* ---------- hero ---------- */
.hero { padding: 72px 0 40px; min-height: calc(100vh - 72px); display: flex; align-items: center; }
.hero .wrap { display: grid; grid-template-columns: 1.05fr 1fr; gap: 32px; align-items: center; }
.hero h1 { margin-bottom: 24px; }
.hero-title { font-size: clamp(2.3rem, 4.4vw, 3.7rem); line-height: 1.08; }
.hero-title .grad-text { display: inline-block; font-size: .78em; line-height: 1.15; margin-top: .12em; }
.hero .lead { margin-bottom: 36px; }
.hero-visual { position: relative; aspect-ratio: 1; width: 100%; max-width: 620px; justify-self: end; }
.hero-visual canvas { width: 100%; height: 100%; display: block; }
.hero-visual .ring {
  position: absolute; inset: 8%; border-radius: 50%;
  border: 1px solid var(--border); box-shadow: inset 0 0 120px rgba(139, 92, 246, .12);
}
.orbit { position: absolute; inset: 0; pointer-events: none; }
.pill { --ang: var(--a); --r: 45%; position: absolute; left: calc(50% + var(--r) * sin(var(--ang))); top: calc(50% - var(--r) * cos(var(--ang)));
  transform: translate(-50%, -50%); white-space: nowrap;
  font: 500 .74rem/1 var(--font-mono); padding: 8px 12px; border-radius: 999px; color: var(--muted);
  border: 1px solid var(--border-2); background: rgba(5,7,14,.78); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  transition: color .5s, border-color .5s, box-shadow .5s, background .5s; }
.pill.method { display: flex; flex-direction: column; align-items: center; gap: 4px; padding: 10px 14px; border-radius: 14px; border-color: rgba(34,211,238,.35); }
.pill.method b { font: 600 1.02rem/1 var(--font-mono); color: var(--cyan); }
.pill.method small { font: 500 .6rem/1.2 var(--font-mono); color: var(--muted); }
.pill.bubble { color: #cbd2e1; }
.pill.bubble.on { color: #fff; border-color: var(--violet); background: rgba(139,92,246,.3); box-shadow: 0 0 22px rgba(139,92,246,.45); }
.cycle-stage { position: absolute; left: 50%; bottom: -5%; transform: translateX(-50%); white-space: nowrap;
  font: 500 .72rem/1 var(--font-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }
.cycle-stage::before { content: "● "; color: var(--pink); }
.hero-visual { container-type: inline-size; }
@container (max-width: 540px) { .pill { --ang: var(--am, var(--a)); --r: 43%; font-size: .6rem; padding: 6px 8px; } .pill.method { padding: 7px 9px; } .pill.method b { font-size: .82rem; } .pill.method small { font-size: .5rem; } }
@media (max-width: 900px) {
  .hero { min-height: 0; padding-top: 40px; }
  .hero .wrap { grid-template-columns: 1fr; }
  .hero-visual { justify-self: center; max-width: 440px; order: -1; margin-bottom: 28px; }
}

/* spectrum strip */
.spectrum { height: 64px; opacity: .9; }
.spectrum svg { width: 100%; height: 100%; display: block; }
.spectrum-wrap { border-bottom: 1px solid var(--border); padding-top: 12px; }
.spectrum-axis { display: flex; justify-content: space-between; font: 500 0.66rem/1 var(--font-mono); color: var(--faint); padding: 8px 0 0; }

/* ---------- cards ---------- */
.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 1000px) { .grid-4 { grid-template-columns: repeat(2, 1fr); } .grid-3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

.card {
  position: relative; padding: 28px; border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.015));
  border: 1px solid var(--border);
  transition: transform .3s cubic-bezier(.2,.8,.2,1), border-color .3s, background .3s;
  overflow: hidden;
}
.card::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px;
  background: radial-gradient(400px circle at var(--mx, 50%) var(--my, 0%), rgba(139,92,246,.55), transparent 45%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: 0; transition: opacity .3s; pointer-events: none;
}
.card:hover::before { opacity: 1; }
.card:hover { transform: translateY(-3px); }
.card h3 { margin-bottom: 10px; }
.card p { color: var(--muted); margin: 0; font-size: 0.97rem; }
.card .icon {
  width: 56px; height: 56px; border-radius: 14px; display: grid; place-items: center; margin-bottom: 22px;
  background: rgba(139, 92, 246, .12); border: 1px solid rgba(139, 92, 246, .3); color: #c4b5fd;
}
.card .icon svg { width: 32px; height: 32px; }
.card .icon.icon-pair { width: fit-content; padding: 0 12px; gap: 10px; grid-auto-flow: column; }
.card .num-tag { font: 500 0.72rem/1 var(--font-mono); color: var(--faint); position: absolute; top: 28px; right: 28px; }
.card-link { display: inline-flex; gap: 8px; align-items: center; margin-top: 18px; font-weight: 600; font-size: 0.92rem; color: var(--text); }
.card-link::after { content: "→"; transition: transform .2s; }
.card:hover .card-link::after { transform: translateX(4px); }

/* feature / callout */
.callout {
  display: grid; grid-template-columns: 1fr 1.3fr; gap: 48px; align-items: center;
  padding: 56px; border-radius: 28px; border: 1px solid var(--border);
  background:
    radial-gradient(600px 300px at 0% 0%, rgba(34,211,238,.12), transparent 60%),
    radial-gradient(600px 300px at 100% 100%, rgba(244,114,182,.1), transparent 60%),
    var(--bg-2);
}
.callout h2 { margin: 0; }
.callout p { color: var(--muted); font-size: 1.08rem; margin: 0; }
@media (max-width: 860px) { .callout { grid-template-columns: 1fr; padding: 32px; gap: 20px; } }

/* values list */
.values { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--border); }
.values li { display: grid; grid-template-columns: 64px 1fr; gap: 24px; padding: 28px 0; border-bottom: 1px solid var(--border); align-items: start; }
.v-icon { width: 56px; height: 56px; border-radius: 14px; display: grid; place-items: center;
  background: rgba(34, 211, 238, .08); border: 1px solid rgba(34, 211, 238, .28); color: #a5f3fc; }
.v-icon svg { width: 34px; height: 34px; }
.values .n { display: block; font: 500 0.75rem/1 var(--font-mono); color: var(--cyan); margin-bottom: 10px; }
@media (max-width: 640px) { .values li { grid-template-columns: 48px 1fr; gap: 16px; } .v-icon { width: 48px; height: 48px; } .v-icon svg { width: 28px; height: 28px; } }

/* page header */
.page-head { padding: 88px 0 48px; }
.page-head h1 { font-size: clamp(2.4rem, 5.4vw, 4.2rem); margin-bottom: 18px; }
.page-head h1.research-title { font-size: clamp(2rem, 4.1vw, 3.05rem); line-height: 1.15; }

/* prose blocks (research etc.) */
.topic { display: grid; grid-template-columns: 300px 1fr; gap: 56px; padding: 56px 0; border-top: 1px solid var(--border); }
.topic:first-child { border-top: 0; padding-top: 0; }
.topic .label { position: sticky; top: 100px; align-self: start; }
.topic .label .n { font: 500 0.78rem/1 var(--font-mono); color: var(--cyan); display: block; margin-bottom: 14px; }
.topic h2 { font-size: clamp(1.6rem, 2.6vw, 2.1rem); }
.topic-art { margin-top: 22px; border-radius: 16px; overflow: hidden; position: relative;
  box-shadow: 0 0 0 1px rgba(139,92,246,.35), 0 18px 40px -20px rgba(139,92,246,.6); }
.topic-art img { width: 100%; height: auto; display: block; }
.h1-sub { display: block; margin-top: .35em; font-size: .5em; letter-spacing: -.015em; color: var(--muted); }
.prose { color: #c9cfdd; font-size: 1.05rem; max-width: 70ch; }
.prose p { margin-bottom: 1.1em; }
.prose ul { padding-left: 1.2em; }
.prose li { margin-bottom: .5em; }
.prose strong { color: var(--text); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.chip { font: 500 0.75rem/1 var(--font-mono); padding: 8px 12px; border-radius: 999px; border: 1px solid var(--border-2); color: var(--muted); }
@media (max-width: 860px) { .topic { grid-template-columns: 1fr; gap: 16px; } .topic .label { position: static; } .topic-art { max-width: 420px; } }

/* ---------- publications ---------- */
.pub-toolbar {
  position: sticky; top: 72px; z-index: 20; display: flex; flex-wrap: wrap; gap: 12px; align-items: center;
  padding: 14px 0; margin-bottom: 12px; background: rgba(5,7,14,.85); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.search { flex: 1 1 260px; position: relative; }
.search input {
  width: 100%; padding: 12px 16px 12px 42px; border-radius: 999px; border: 1px solid var(--border-2);
  background: var(--surface); color: var(--text); font: inherit; font-size: 0.95rem;
}
.search input::placeholder { color: var(--faint); }
.search input:focus { outline: none; border-color: var(--violet); box-shadow: 0 0 0 4px rgba(139,92,246,.18); }
.search svg { position: absolute; left: 15px; top: 50%; transform: translateY(-50%); width: 17px; height: 17px; color: var(--faint); }
.filters { display: flex; flex-wrap: wrap; gap: 6px; }
.filter {
  padding: 9px 14px; border-radius: 999px; border: 1px solid var(--border); background: transparent;
  color: var(--muted); font: 500 0.85rem/1 var(--font-body); cursor: pointer; transition: all .2s;
}
.filter:hover { color: var(--text); border-color: var(--border-2); }
.filter.on { color: #05070e; background: var(--text); border-color: var(--text); }
.filter .c { opacity: .6; margin-left: 6px; font-family: var(--font-mono); font-size: .75rem; }
.pub-count { font: 500 0.78rem/1 var(--font-mono); color: var(--faint); margin-left: auto; }

.year-group { display: grid; grid-template-columns: 120px 1fr; gap: 24px; padding: 28px 0; border-bottom: 1px solid var(--border); }
.year-group .yr { font: var(--display-weight) 1.9rem/1 var(--font-display); letter-spacing: -0.03em; position: sticky; top: 150px; align-self: start; color: var(--faint); }
.year-group .yr.grad-text { color: transparent; }
@media (max-width: 700px) { .year-group { grid-template-columns: 1fr; gap: 8px; } .year-group .yr { position: static; font-size: 1.5rem; } }
.pub { display: grid; grid-template-columns: 44px 1fr; gap: 8px; padding: 18px 20px 18px 12px; margin: 0 -20px 0 -12px; border-radius: 14px; transition: background .2s; }
.pub:hover { background: var(--surface); }
.pub-n { font: 500 0.8rem/1.9 var(--font-mono); color: var(--faint); text-align: right; padding-right: 8px; }
.pub:hover .pub-n { color: var(--cyan); }
.pub-title { font: 600 1.08rem/1.4 var(--font-body); letter-spacing: -0.005em; margin: 0 0 6px; color: var(--text); }
.pub-title a:hover { color: var(--cyan); }
.pub-authors { color: var(--muted); font-size: 0.9rem; margin: 0 0 6px; }
.pub-authors b { color: var(--text); font-weight: 600; }
.pub-meta { display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: center; font-size: 0.88rem; }
.pub-venue { font-style: italic; color: #c9cfdd; }
.badge { font: 500 0.68rem/1 var(--font-mono); padding: 5px 9px; border-radius: 999px; letter-spacing: 0.04em; text-transform: uppercase; border: 1px solid; }
.badge.review { color: #fbbf24; border-color: rgba(251,191,36,.35); background: rgba(251,191,36,.08); }
.badge.accepted { color: #34d399; border-color: rgba(52,211,153,.35); background: rgba(52,211,153,.08); }
.badge.prep { color: var(--muted); border-color: var(--border-2); background: var(--surface); }
.badge.preprint { color: #a5b4fc; border-color: rgba(165,180,252,.35); background: rgba(165,180,252,.08); }
.badge.patent { color: var(--pink); border-color: rgba(244,114,182,.35); background: rgba(244,114,182,.08); }
.pub-ids { display: inline-flex; gap: 10px; font: 500 0.74rem/1 var(--font-mono); }
.pub-ids a { color: var(--faint); border-bottom: 1px dotted var(--faint); padding-bottom: 1px; transition: color .2s, border-color .2s; }
.pub-ids a:hover { color: var(--cyan); border-color: var(--cyan); }
.pub-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.ptag { font: 500 0.7rem/1 var(--font-mono); padding: 5px 9px; border-radius: 6px; cursor: pointer; border: 1px solid var(--tc-b); color: var(--tc); background: var(--tc-bg); transition: filter .2s; }
.ptag:hover { filter: brightness(1.3); }
.pub-featured { margin: 10px 0 0; font-size: .82rem; color: var(--muted); }
.pub-featured a:hover { color: var(--cyan); }
[data-tag="folding"]     { --tc: #67e8f9; --tc-b: rgba(103,232,249,.3); --tc-bg: rgba(103,232,249,.07); }
[data-tag="chaperones"]  { --tc: #86efac; --tc-b: rgba(134,239,172,.3); --tc-bg: rgba(134,239,172,.07); }
[data-tag="LiP-MS"]      { --tc: #a5b4fc; --tc-b: rgba(165,180,252,.3); --tc-bg: rgba(165,180,252,.07); }
[data-tag="XL-MS"]       { --tc: #c4b5fd; --tc-b: rgba(196,181,253,.3); --tc-bg: rgba(196,181,253,.07); }
[data-tag="condensates"] { --tc: #f0abfc; --tc-b: rgba(240,171,252,.3); --tc-bg: rgba(240,171,252,.07); }
[data-tag="neuro"]       { --tc: #f9a8d4; --tc-b: rgba(249,168,212,.3); --tc-bg: rgba(249,168,212,.07); }
[data-tag="disease"]     { --tc: #fda4af; --tc-b: rgba(253,164,175,.3); --tc-bg: rgba(253,164,175,.07); }
.tag-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; flex-basis: 100%; }
.tag-label { font: 500 0.7rem/1 var(--font-mono); color: var(--faint); text-transform: uppercase; letter-spacing: .12em; }
.filter.tagf { color: var(--tc); border-color: var(--tc-b); }
.filter.tagf.on { background: var(--tc); border-color: var(--tc); color: #05070e; }
@media (max-width: 600px) { .pub { grid-template-columns: 30px 1fr; } }
.empty { padding: 60px 0; text-align: center; color: var(--muted); }

/* ---------- team ---------- */
.pi {
  display: grid; grid-template-columns: 340px 1fr; gap: 48px; align-items: start;
  padding: 40px; border-radius: 28px; border: 1px solid var(--border); background: var(--bg-2);
}
.pi .avatar { border-radius: 22px; aspect-ratio: 4/5; font-size: 4rem; }
.pi h2 { margin-bottom: 4px; }
.pi .role { font: 500 0.8rem/1 var(--font-mono); color: var(--cyan); text-transform: uppercase; letter-spacing: .12em; margin-bottom: 24px; display: block; }
@media (max-width: 860px) { .pi { grid-template-columns: 1fr; padding: 24px; gap: 24px; } .pi .avatar { max-width: 280px; } }

.avatar {
  width: 100%; aspect-ratio: 1; border-radius: 16px; overflow: hidden; position: relative;
  display: grid; place-items: center; font: var(--display-weight) 2rem/1 var(--font-display); color: rgba(255,255,255,.92);
  background: var(--av, linear-gradient(135deg, #22d3ee, #8b5cf6));
}
.avatar img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 30%; }
.group-title { display: flex; align-items: baseline; gap: 14px; margin: 72px 0 24px; }
.group-title h2 { margin: 0; font-size: clamp(1.5rem, 2.6vw, 2rem); }
.group-title .c { font: 500 0.8rem/1 var(--font-mono); color: var(--faint); }

.member { padding: 0; display: flex; flex-direction: column; cursor: pointer; text-align: left; font: inherit; color: inherit; width: 100%; }
.member .avatar { border-radius: 0; aspect-ratio: 1 / 1; }
.member .body { padding: 20px 22px 22px; flex: 1; display: flex; flex-direction: column; }
.member h3 { font-size: 1.12rem; margin: 0 0 4px; }
.member .prog { font: 500 0.7rem/1.3 var(--font-mono); color: var(--cyan); text-transform: uppercase; letter-spacing: .08em; margin-bottom: 12px; }
.member .proj { color: var(--muted); font-size: 0.9rem; line-height: 1.5; margin: 0; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.member .card-foot { margin-top: auto; padding-top: 14px; display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.member .more { font-size: .82rem; font-weight: 600; color: var(--text); opacity: .7; }
.card-social { display: inline-flex; gap: 6px; }
.card-social a { width: 30px; height: 30px; display: grid; place-items: center; border-radius: 8px; border: 1px solid var(--border-2); color: var(--muted); transition: color .2s, border-color .2s, background .2s; }
.card-social a:hover { color: var(--text); border-color: var(--cyan); background: rgba(34,211,238,.08); }
.card-social svg { width: 14px; height: 14px; }
.pi-social { margin-top: 20px; }
.pi-social .card-social { gap: 10px; }
.pi-social .card-social a { width: 40px; height: 40px; border-radius: 11px; }
.pi-social .card-social svg { width: 18px; height: 18px; }
.member:hover .more { opacity: 1; }

.alumni { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 32px; border-top: 1px solid var(--border); }
.alum { display: grid; grid-template-columns: 48px 1fr; gap: 14px; align-items: center; padding: 14px 0; border-bottom: 1px solid var(--border); }
.alum .avatar { width: 48px; height: 48px; border-radius: 50%; font-size: .95rem; }
.alum-top { display: flex; justify-content: space-between; gap: 12px; align-items: baseline; }
.alum .nm { font-weight: 600; }
.alum .yr { font: 500 0.75rem/1.6 var(--font-mono); color: var(--faint); white-space: nowrap; }
.alum .now { display: block; color: var(--muted); font-size: .88rem; margin-top: 2px; }
.alum .now::before { content: "→ "; color: var(--cyan); }
@media (max-width: 900px) { .alumni { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .alumni { grid-template-columns: 1fr; } }

/* modal */
dialog.modal {
  width: min(760px, calc(100% - 32px)); max-height: calc(100vh - 48px); padding: 0; border-radius: 24px;
  border: 1px solid var(--border-2); background: var(--bg-2); color: var(--text); overflow: auto;
}
dialog.modal::backdrop { background: rgba(2,3,8,.7); backdrop-filter: blur(6px); }
.modal-inner { display: grid; grid-template-columns: 220px 1fr; gap: 32px; padding: 32px; }
.modal-inner .avatar { border-radius: 16px; }
.modal h2 { font-size: 1.8rem; margin-bottom: 4px; }
.modal dl { margin: 20px 0 0; display: grid; gap: 16px; }
.modal dt { font: 500 0.7rem/1 var(--font-mono); color: var(--faint); text-transform: uppercase; letter-spacing: .12em; margin-bottom: 6px; }
.modal dd { margin: 0; color: #c9cfdd; }
.modal-close { position: sticky; top: 12px; float: right; margin: 12px 12px 0 0; width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--border-2); background: var(--surface); color: var(--text); cursor: pointer; font-size: 1.2rem; z-index: 2; }
.social { display: flex; gap: 8px; margin-top: 20px; }
.social a { font: 500 0.75rem/1 var(--font-mono); padding: 8px 12px; border-radius: 999px; border: 1px solid var(--border-2); color: var(--muted); }
.social a:hover { color: var(--text); border-color: var(--cyan); }
@media (max-width: 640px) { .modal-inner { grid-template-columns: 1fr; padding: 24px; } .modal-inner .avatar { max-width: 180px; } }

/* ---------- sponsors ---------- */
.sponsors-head { display: flex; justify-content: space-between; align-items: end; gap: 24px; flex-wrap: wrap; margin-bottom: 36px; }
.sponsors-head h2 { margin: 0; max-width: 22ch; }
.support-link { font: 500 .85rem/1 var(--font-mono); color: var(--muted); border-bottom: 1px solid var(--border-2); padding-bottom: 4px; transition: color .2s, border-color .2s; }
.support-link:hover { color: var(--text); border-color: var(--cyan); }
.sponsor-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 16px; }
.sponsor { position: relative; height: 118px; border-radius: 18px; display: grid; place-items: center; padding: 14px 18px;
  background: linear-gradient(155deg, rgba(56,189,248,.07), rgba(139,92,246,.09) 60%, rgba(236,72,153,.04));
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.09), 0 10px 34px -16px rgba(99,102,241,.55);
  transition: transform .25s, box-shadow .25s, background .25s; }
.sponsor::before { content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1.5px; pointer-events: none;
  background: linear-gradient(135deg, rgba(56,189,248,.85), rgba(129,140,248,.7) 45%, rgba(168,85,247,.85));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; opacity: .7; transition: opacity .25s; }
.sponsor:hover { transform: translateY(-3px); background: linear-gradient(155deg, rgba(56,189,248,.12), rgba(139,92,246,.16) 60%, rgba(236,72,153,.07));
  box-shadow: inset 0 1px 0 rgba(255,255,255,.14), 0 16px 40px -14px rgba(139,92,246,.8); }
.sponsor:hover::before { opacity: 1; }
.sponsor img { max-width: 100%; max-height: 88px; object-fit: contain; opacity: .92; transition: opacity .25s; }
.sponsor:hover img { opacity: 1; }
.sponsor-mark { grid-template-columns: auto auto; gap: 14px; justify-content: center; }
.sponsor-mark img { max-height: 76px; }
.sponsor-mark span { text-align: left; font: 500 .72rem/1.35 var(--font-body); color: var(--text); letter-spacing: .02em; }
.sponsor-mark b { font: 700 1.1rem/1.2 Georgia, "Times New Roman", serif; letter-spacing: .06em; text-transform: uppercase; }
@media (max-width: 520px) { .sponsor-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; } .sponsor { height: 96px; padding: 10px 12px; } .sponsor img { max-height: 72px; } .sponsor-mark img { max-height: 58px; } }

/* ---------- footer ---------- */
.footer { border-top: 1px solid var(--border); padding: 64px 0 40px; margin-top: 64px; background: linear-gradient(180deg, transparent, rgba(139,92,246,.05)); }
.footer .cols { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; }
.footer h4 { font: 500 0.72rem/1 var(--font-mono); color: var(--faint); text-transform: uppercase; letter-spacing: .14em; margin-bottom: 16px; }
.footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.footer a { color: var(--muted); transition: color .2s; }
.footer a:hover { color: var(--text); }
.footer address { font-style: normal; color: var(--muted); line-height: 1.8; }
.footer .brand { margin-bottom: 16px; }
.footer .legal { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; margin-top: 56px; padding-top: 24px; border-top: 1px solid var(--border); font-size: .82rem; color: var(--faint); }
@media (max-width: 860px) { .footer .cols { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .footer .cols { grid-template-columns: 1fr; } }

/* ---------- reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .8s cubic-bezier(.2,.8,.2,1), transform .8s cubic-bezier(.2,.8,.2,1); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .card, .btn { transition: none; }
}