/* homepage-only styles; tokens and shared chrome live in site.css */

/* ---------- hero ---------- */
.hero { position: relative; min-height: 100vh; min-height: 100svh; display: flex; flex-direction: column; overflow: hidden; }
.hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero::after {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(ellipse 60% 70% at 18% 45%, rgba(var(--bg-rgb), .92), rgba(var(--bg-rgb), 0) 70%),
    linear-gradient(to bottom, rgba(var(--bg-rgb), .7), transparent 18%, transparent 80%, var(--bg));
}
.hero-canvas { cursor: grab; touch-action: pan-y; }
.hero-canvas.dragging { cursor: grabbing; }
.hero-body { position: relative; z-index: 2; flex: 1; display: flex; align-items: center; padding-top: 64px; pointer-events: none; }
.hero-copy { pointer-events: auto; }
.hero-hint { position: absolute; z-index: 2; right: var(--gutter); top: 84px; font: 11px/1 var(--mono); color: var(--muted); letter-spacing: .06em; pointer-events: none; }
.hero-tip { z-index: 5; }
.tip .pls { display: inline-flex; align-items: flex-end; gap: 4px; margin-left: 6px; vertical-align: bottom; }
.tip .pl { display: inline-flex; flex-direction: column; align-items: center; font-size: 9px; color: var(--muted); }
.tip .pl i { display: block; width: 8px; background: var(--line-2); border-radius: 2px 2px 0 0; margin-bottom: 2px; }
.tip .L { color: var(--bid); font-weight: 600; }
.tip .S { color: var(--ask); font-weight: 600; }
.tip .k { color: var(--muted); }
.hero-copy { max-width: 620px; }
.eyebrow { font: 500 12px/1.4 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--signal); margin: 0 0 22px; }
.hero h1 { font: 600 clamp(38px, 6.4vw, 76px)/1.02 var(--display); letter-spacing: -.035em; margin: 0 0 26px; }
.hero h1 .cyc { color: var(--signal); }
.hero h1 .caret { display: inline-block; width: .06em; height: .82em; background: var(--signal); margin-left: .04em; vertical-align: -.06em; animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.lede { font-size: clamp(16px, 1.6vw, 18px); color: var(--ink-2); max-width: 540px; margin: 0 0 32px; }
.lede strong { color: var(--ink); font-weight: 500; }
.ctas { display: flex; flex-wrap: wrap; gap: 12px; }

.hud {
  position: relative; z-index: 2; border-top: 1px solid var(--line);
  background: rgba(var(--bg-rgb), .72); -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
  font: 12px/1 var(--mono); color: var(--muted);
}
.hud .wrap { display: flex; gap: 28px; align-items: center; height: 46px; overflow-x: auto; scrollbar-width: none; white-space: nowrap; }
.hud .wrap::-webkit-scrollbar { display: none; }
.hud b { color: var(--ink); font-weight: 500; margin-left: 6px; font-variant-numeric: tabular-nums; }
.hud .live { color: var(--signal); display: flex; align-items: center; gap: 8px; }
.hud .live::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--signal); animation: blink 1.4s steps(1) infinite; }
.hud .legend { margin-left: auto; display: flex; gap: 18px; }
.hud .legend i { display: inline-block; width: 14px; height: 2px; vertical-align: middle; margin-right: 6px; }

/* ---------- sections ---------- */
section.block { padding: clamp(72px, 10vw, 128px) 0; border-top: 1px solid var(--line); }
.sec-head { display: grid; grid-template-columns: 200px 1fr; gap: 32px; margin-bottom: 48px; }
.sec-idx { font: 12px/1.8 var(--mono); color: var(--muted); letter-spacing: .08em; text-transform: uppercase; }
.sec-idx span { color: var(--signal); }
.sec-head h2 { font: 600 clamp(28px, 3.6vw, 42px)/1.1 var(--display); letter-spacing: -.025em; margin: 0 0 12px; }
.sec-head p { color: var(--ink-2); margin: 0; max-width: 640px; }

.creds { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; background: var(--bg-2); }
.cred { padding: 24px; border-right: 1px solid var(--line); }
.cred:last-child { border-right: 0; }
.cred .k { font: 11px/1.4 var(--mono); color: var(--muted); letter-spacing: .08em; text-transform: uppercase; }
.cred .v { font: 600 18px/1.3 var(--display); margin-top: 10px; }
.cred .s { color: var(--ink-2); font-size: 14px; margin-top: 4px; }

.principles { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; }
.pr { background: var(--bg); padding: 30px; }
.pr .eq { font: 18px/1.4 var(--math); color: var(--signal); margin: -6px 0 10px; min-height: 52px; overflow-x: auto; overflow-y: hidden; }
.pr h3 { font: 600 19px/1.3 var(--display); margin: 0 0 8px; }
.pr p { margin: 0; color: var(--ink-2); font-size: 15px; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 28px; }
.chip { font: 12px/1 var(--mono); color: var(--ink-2); background: transparent; border: 1px solid var(--line-2); border-radius: 999px; padding: 9px 14px; cursor: pointer; transition: all .2s; }
.chip:hover { border-color: var(--ink-2); color: var(--ink); }
.chip[aria-pressed="true"], .chip[aria-selected="true"] { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.card {
  position: relative; display: flex; flex-direction: column; gap: 14px;
  background: var(--bg-2); border: 1px solid var(--line); border-radius: 14px; padding: 28px;
  transition: border-color .25s, transform .25s;
}
.card:hover { border-color: var(--line-2); transform: translateY(-2px); }
.card[hidden] { display: none; }
.card .meta { display: flex; justify-content: space-between; gap: 12px; font: 11px/1.4 var(--mono); color: var(--muted); letter-spacing: .06em; text-transform: uppercase; }
.card h3 { font: 600 21px/1.25 var(--display); margin: 0; letter-spacing: -.01em; }
.card p { margin: 0; color: var(--ink-2); font-size: 15px; }
.card ul { margin: 0; padding-left: 18px; color: var(--ink-2); font-size: 14px; }
.card ul li { margin: 2px 0; }
.metrics { display: flex; flex-wrap: wrap; gap: 10px 26px; margin-top: auto; padding-top: 16px; border-top: 1px dashed var(--line); }
.metric .n { font: 600 22px/1 var(--mono); color: var(--signal); font-variant-numeric: tabular-nums; }
.metric .l { font: 11px/1.4 var(--mono); color: var(--muted); margin-top: 6px; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tag { font: 11px/1 var(--mono); color: var(--ink-2); background: var(--panel); border-radius: 4px; padding: 5px 8px; }
.card a.more { font: 12px/1 var(--mono); color: var(--signal); text-decoration: none; }
.card a.more:hover { text-decoration: underline; }

.pubs { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.pub { display: grid; grid-template-columns: 90px 1fr; gap: 24px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.pub .yr { font: 13px/1.6 var(--mono); color: var(--muted); }
.pub .t { font: 500 17px/1.45 var(--display); }
.pub .v { color: var(--ink-2); font-size: 14px; margin-top: 4px; }
.pub .v em { color: var(--ink); font-style: normal; }
.more-link { display: inline-block; margin: 24px 24px 0 0; font: 13px/1 var(--mono); color: var(--signal); text-decoration: none; }
.more-link:hover { text-decoration: underline; }

.stack { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.stack div { border: 1px solid var(--line); border-radius: 12px; padding: 22px; background: var(--bg-2); }
.stack h4 { margin: 0 0 12px; font: 11px/1.4 var(--mono); color: var(--muted); letter-spacing: .08em; text-transform: uppercase; }
.stack p { margin: 0; font-size: 15px; color: var(--ink-2); line-height: 1.8; }

.about { display: grid; grid-template-columns: 1fr 340px; gap: 56px; align-items: start; }
.about p { color: var(--ink-2); margin: 0 0 18px; font-size: 17px; }
.about p strong { color: var(--ink); font-weight: 500; }
.about p a { color: var(--signal); }
.about blockquote { margin: 28px 0 0; padding: 0 0 0 20px; border-left: 2px solid var(--signal); font: 500 18px/1.5 var(--display); color: var(--ink); }
.portrait { margin: 0; border-radius: 14px; overflow: hidden; border: 1px solid var(--line); position: relative; }
.portrait img { display: block; width: 100%; aspect-ratio: 3 / 4; object-fit: cover; }
.portrait figcaption { position: absolute; left: 0; right: 0; bottom: 0; padding: 12px 14px; font: 11px/1.4 var(--mono); color: #e8ebf0; background: linear-gradient(transparent, rgba(0,0,0,.75)); }
.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 28px; }
.gallery img { display: block; width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: 10px; border: 1px solid var(--line); filter: grayscale(.35); transition: filter .3s; }
.gallery img:hover { filter: none; }

.contact h2 { font: 600 clamp(34px, 5.6vw, 64px)/1.04 var(--display); letter-spacing: -.035em; margin: 0 0 28px; max-width: 820px; }
.contact h2 span { color: var(--signal); }
.contact .cvs { margin-top: 28px; color: var(--muted); font: 13px/1.8 var(--mono); }
.contact .cvs a { color: var(--ink-2); }
.links { display: flex; flex-wrap: wrap; gap: 10px; }

/* ---------- lab ---------- */
.lab-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.lab-tabs .chip { display: inline-flex; gap: 8px; align-items: center; }
.lab-tabs .chip b { font-weight: 500; opacity: .55; }
.lab-panel {
  display: grid; grid-template-columns: minmax(0, 1fr) 330px; grid-template-areas: "fig side";
  border: 1px solid var(--line); border-radius: 16px; overflow: hidden; background: var(--bg-2);
}
.lab-panel[hidden] { display: none; }
.lab-fig { grid-area: fig; position: relative; min-height: 600px; border-right: 1px solid var(--line); background: var(--bg); }
.lab-fig canvas { position: absolute; inset: 0; width: 100%; height: 100%; touch-action: none; }
.lab-fig .grab { cursor: grab; }
.lab-fig .grab:active { cursor: grabbing; }
.lab-cap { position: absolute; left: 16px; top: 14px; font: 11px/1.4 var(--mono); color: var(--muted); letter-spacing: .06em; text-transform: uppercase; pointer-events: none; }
.lab-legend { position: absolute; left: 16px; bottom: 14px; display: flex; flex-wrap: wrap; gap: 6px 16px; font: 11px/1.4 var(--mono); color: var(--ink-2); pointer-events: none; }
.lab-legend i { display: inline-block; width: 14px; height: 2px; vertical-align: middle; margin-right: 6px; }
.lab-legend i.dot { width: 7px; height: 7px; border-radius: 50%; }
.lab-legend i.ramp { width: 60px; height: 8px; border-radius: 2px; background: linear-gradient(90deg, var(--seq-0), var(--seq-1)); }
.tip {
  position: absolute; z-index: 3; pointer-events: none; opacity: 0; transition: opacity .12s;
  background: var(--bg-2); border: 1px solid var(--line-2); border-radius: 8px; padding: 8px 10px;
  font: 11px/1.6 var(--mono); color: var(--ink-2); white-space: nowrap; box-shadow: 0 6px 24px rgba(0,0,0,.25);
}
.tip b { color: var(--ink); font-weight: 500; }
.tip.on { opacity: 1; }

.lab-side { grid-area: side; padding: 26px 24px; display: flex; flex-direction: column; gap: 18px; }
.lab-side h3 { font: 600 20px/1.25 var(--display); margin: 0; letter-spacing: -.01em; }
.lab-side p { margin: 0; color: var(--ink-2); font-size: 14px; line-height: 1.65; }
.eqn { font: 15px/1.5 var(--math); color: var(--ink); background: var(--bg); border: 1px solid var(--line); border-radius: 10px; padding: 6px 16px; overflow-x: auto; overflow-y: hidden; }
mjx-container { font-family: var(--math); }
.eqn mjx-container[display="true"], .pr mjx-container[display="true"] { margin: .5em 0 !important; text-align: left !important; }
.stats .k mjx-container, .ctrl mjx-container { text-transform: none; font-size: 130%; }
.ctrl { display: grid; gap: 14px; }
.ctrl label { display: grid; gap: 6px; font: 12px/1.3 var(--mono); color: var(--ink-2); }
.ctrl .row { display: flex; justify-content: space-between; }
.ctrl output { color: var(--ink); font-variant-numeric: tabular-nums; }
.ctrl input[type=range] { width: 100%; accent-color: var(--signal); margin: 0; }
.ctrl select { font: 12px var(--mono); color: var(--ink); background: var(--bg); border: 1px solid var(--line-2); border-radius: 6px; padding: 7px 8px; }
.ctrl .btns { display: flex; gap: 8px; flex-wrap: wrap; }
.ctrl .btn { padding: 10px 14px; font-size: 13px; }
.stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.stats div { background: var(--bg); padding: 10px 12px; }
.stats .k { font: 10px/1.4 var(--mono); color: var(--muted); letter-spacing: .06em; text-transform: uppercase; }
.stats .v { font: 500 16px/1.3 var(--mono); color: var(--ink); margin-top: 3px; font-variant-numeric: tabular-nums; }
.badges { display: flex; flex-wrap: wrap; gap: 6px; }
.badge { font: 11px/1 var(--mono); padding: 6px 9px; border-radius: 999px; border: 1px solid var(--line-2); color: var(--ink-2); }
.badge.ok::before { content: '✓ '; color: var(--bid); }
.badge.bad::before { content: '✗ '; color: var(--ask); }
.badge.bad { border-color: var(--ask); }
.refs { font: 11px/1.6 var(--mono); color: var(--muted); margin-top: auto; }
.refs a { color: var(--ink-2); }
.mini { width: 100%; height: 90px; display: block; }

@media (prefers-reduced-motion: reduce) {
  .hero h1 .caret, .hud .live::before { animation: none; }
}

/* ---------- responsive ---------- */
@media (max-width: 1020px) {
  .lab-panel { grid-template-columns: 1fr; grid-template-areas: "fig" "side"; }
  .lab-fig { min-height: 460px; border-right: 0; border-bottom: 1px solid var(--line); }
}
@media (max-width: 960px) {
  .sec-head { grid-template-columns: 1fr; gap: 12px; }
  .creds { grid-template-columns: repeat(2, 1fr); }
  .cred:nth-child(2) { border-right: 0; }
  .cred:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .stack { grid-template-columns: repeat(2, 1fr); }
  .about { grid-template-columns: 1fr; }
  .portrait { max-width: 360px; }
  .hud .legend { display: none; }
}
@media (max-width: 760px) {
  .hero-hint { display: none; }
  .hero::after { background: linear-gradient(to bottom, rgba(var(--bg-rgb), .85), rgba(var(--bg-rgb), .7) 50%, transparent 62%, transparent 85%, var(--bg)); }
  .hero-body { align-items: flex-start; padding-top: 104px; }
  .cards, .principles { grid-template-columns: 1fr; }
  .pub { grid-template-columns: 1fr; gap: 4px; }
  .card, .pr { padding: 22px; }
  .lab-fig { min-height: 400px; }
  .lab-side { padding: 20px 18px; }
}
@media (max-width: 480px) {
  .creds, .stack { grid-template-columns: 1fr; }
  .cred { border-right: 0; border-bottom: 1px solid var(--line); }
  .cred:last-child { border-bottom: 0; }
}

.stats.hist { grid-template-columns: 1fr; }
.stats.hist:empty { display: none; }
.stats.hist div { display: flex; justify-content: space-between; gap: 12px; padding: 7px 12px; font: 12px/1.4 var(--mono); color: var(--ink); }
.stats.hist .k { font-size: 11px; }

/* ---------- lean layout ---------- */
.motto { font: italic 15px/1.4 var(--math); color: var(--ink-2); margin: 0 0 26px; letter-spacing: .01em; }
.motto span { color: var(--muted); font-style: normal; font-size: 13px; }
@media (min-width: 1100px) { .sub { white-space: nowrap; } }
.sub { font: 500 13px/1.6 var(--mono); color: var(--ink-2); letter-spacing: .02em; margin: 0 0 34px; }
.sub i { font-style: normal; color: var(--signal); padding: 0 6px; }
.hero h1 { margin-bottom: 22px; }
.mini-cap { font: 11px/1.4 var(--mono); color: var(--muted); margin: 4px 0 -8px; }

.cards { grid-template-columns: repeat(3, 1fr); }
.card { padding: 24px; gap: 10px; }
.card .meta { display: block; text-transform: none; letter-spacing: .02em; }
.card h3 { font-size: 19px; }
.card p { font-size: 14px; color: var(--muted); }
.metrics { display: flex; flex-wrap: wrap; gap: 8px; border-top: 0; padding-top: 10px; }
.metric { flex: 1 1 auto; border: 1px solid var(--line); border-radius: 10px; padding: 12px 12px 10px; background: var(--bg); }
.metric .n { font-size: 18px; letter-spacing: -.03em; white-space: nowrap; }
.metric .l { font-size: 10px; margin-top: 8px; line-height: 1.35; }

.principles { grid-template-columns: repeat(4, 1fr); }
.pr { padding: 26px 22px; display: flex; flex-direction: column; justify-content: space-between; min-height: 170px; }
.pr .eq { font-size: 17px; margin: 0 0 18px; }
.pr h3 { font: 500 12px/1.4 var(--mono); color: var(--muted); letter-spacing: .08em; text-transform: uppercase; margin: 0; }

.stack-cloud { display: grid; gap: 14px; }
.grp { position: relative; display: flex; flex-wrap: wrap; align-items: center; gap: 8px; padding-left: 76px; }
.gk { position: absolute; left: 0; top: 12px; font: 11px/1 var(--mono); color: var(--signal); letter-spacing: .1em; text-transform: uppercase; }
.tb { font: 500 13px/1 var(--mono); color: var(--ink); padding: 9px 13px; border: 1px solid var(--line-2); border-radius: 6px; background: var(--bg-2); transition: border-color .2s, color .2s, transform .2s; }
.tb:hover { border-color: var(--signal); color: var(--signal); transform: translateY(-1px); }

.about2 { display: grid; grid-template-columns: 1fr 1fr 1.1fr; gap: 14px; align-items: end; }
.about2 .ph { margin: 0; border-radius: 14px; overflow: hidden; border: 1px solid var(--line); }
.about2 .ph img { display: block; width: 100%; aspect-ratio: 3 / 4; object-fit: cover; object-position: top; }
.about2 .ph:nth-child(2) img { filter: grayscale(1) contrast(1.1); }
.about-txt { padding: 0 0 8px 16px; }
.about-txt p { font: 500 clamp(18px, 1.8vw, 22px)/1.45 var(--display); color: var(--ink); margin: 0 0 18px; letter-spacing: -.01em; }

@media (max-width: 1020px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
  .principles { grid-template-columns: repeat(2, 1fr); }
  .about2 { grid-template-columns: 1fr 1fr; }
  .about-txt { grid-column: 1 / -1; padding: 8px 0 0; }
}
@media (max-width: 640px) {
  .cards, .principles { grid-template-columns: 1fr; }
  .grp { padding-left: 0; padding-top: 22px; }
  .gk { top: 0; }
}