:root{
  --paper:#F8F5EF;
  --ink:#0A0A0A;
  --void:#000000;
  --muted:#6B6E70;
  --line:#E6E2DB;
  --red:#FF1A1A;
  --blue:#0098FF;
  --yellow:#FFD500;
  --radius:14px;
  --max:1140px;
  --sans:-apple-system,BlinkMacSystemFont,"Inter","Helvetica Neue",Helvetica,Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;font-family:var(--sans);color:var(--ink);background:var(--paper);line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:inherit}
a:focus-visible,button:focus-visible{outline:2px solid var(--red);outline-offset:2px}
img,video{display:block;max-width:100%}

.site-header{
  position:sticky;top:0;z-index:20;
  display:flex;align-items:center;gap:18px;
  padding:12px 18px;
  background:rgba(248,245,239,.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:-.02em;text-decoration:none}
.brand em{font-style:normal;color:var(--muted);font-weight:400;margin-left:4px;font-size:12px}
.plate-mark{width:20px;height:20px;background:#fff;border:2px solid var(--ink);border-radius:4px;position:relative;display:inline-block}
.plate-mark::before,.plate-mark::after{content:"";position:absolute;width:6px;height:6px;background:var(--ink);border-radius:50%;top:50%;left:50%;transform:translate(-50%,-50%)}
.toc{margin-left:auto;display:flex;gap:12px;flex-wrap:wrap}
.toc a{font-size:12px;letter-spacing:-.01em;color:var(--muted);text-decoration:none;padding:4px 0;border-bottom:2px solid transparent}
.toc a.is-active,.toc a:hover{color:var(--ink);border-color:var(--ink)}
.progress{position:absolute;left:0;right:0;bottom:-1px;height:2px}
.progress span{display:block;height:100%;width:0;background:var(--ink);transition:width .2s}

.slide{max-width:var(--max);margin:0 auto;padding:56px 18px 48px;border-bottom:1px solid var(--line)}
.slide:last-of-type{border-bottom:none}
.section-head{max-width:680px;margin:0 0 24px}
.section-head h2{margin:0 0 8px;font-size:26px;line-height:1.15;letter-spacing:-.03em;font-weight:700}
.section-head p{margin:0;color:var(--muted);font-size:15px}

.cover .cover-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:32px;align-items:center}
.cover h1{margin:0;font-size:50px;line-height:.9;letter-spacing:-.04em;font-weight:800}
.cover h1 span{font-weight:300;display:block;color:var(--muted);font-size:32px;margin-top:4px}
.lead{margin:10px 0 6px;font-size:17px}
.meta{margin:0;color:var(--muted);font-size:11px;font-family:var(--mono)}
.facts{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:16px}
.facts div{background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px}
.facts strong{display:block;font-size:14px}
.facts span{color:var(--muted);font-size:11px}
.actions{margin-top:16px;display:flex;gap:10px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 16px;border-radius:999px;font-size:14px;font-weight:600;text-decoration:none;border:1px solid var(--line);background:#fff;color:var(--ink)}
.btn.primary{background:var(--ink);color:#fff;border-color:var(--ink)}
.cover-card{margin:0;background:#000;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.cover-card img{width:100%;aspect-ratio:1080/720;object-fit:cover}
.cover-card figcaption{padding:10px 12px;font-size:11px;color:var(--muted);background:#fff;border-top:1px solid var(--line)}

.plate-grid{display:grid;grid-template-columns:1fr 320px;gap:16px}
.plate-grid figure{margin:0;background:#000;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.plate-grid img{width:100%}
.plate-spec{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.plate-spec h3{margin:0 0 12px;font-size:14px;letter-spacing:-.02em}
.plate-spec dl{margin:0;display:grid;gap:8px}
.plate-spec dt{font-size:10px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.plate-spec dd{margin:0;font-size:12px}
.holes{margin-top:14px;display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.holes span{height:28px;background:#fff;border:1px solid var(--ink);border-radius:6px;position:relative}
.holes span::after{content:"";position:absolute;width:8px;height:8px;background:var(--ink);border-radius:50%;top:50%;left:50%;transform:translate(-50%,-50%)}
.note{margin:10px 0 0;color:var(--muted);font-size:11px}

.posters-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.poster{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px}
.poster-preview{height:140px;border-radius:10px;display:grid;place-items:center;margin-bottom:10px;border:1px solid var(--line);overflow:hidden;font-weight:800;letter-spacing:-.02em}
.poster-preview.black{background:#000;color:#fff;font-size:42px}
.poster-preview.vignelli{background:#F8F5EF;color:#000;font-size:18px}
.poster-preview.red{background:var(--red);color:#fff;font-size:64px}
.poster-preview.ho{background:#F8F5EF;color:var(--red);font-size:28px;display:flex;flex-direction:column;align-items:flex-start;padding:16px}
.poster-preview.ho .sub{font-size:11px;color:var(--red);font-weight:400;margin-top:4px}
.poster-preview.mugs{display:grid;grid-template-columns:1fr 1fr;gap:6px;padding:12px;background:#000}
.poster-preview.mugs span{height:28px;border-radius:6px}
.poster-preview.ninetytwo{background:#fff;color:var(--red);font-size:48px;letter-spacing:-.04em}
.poster h3{margin:0 0 4px;font-size:13px}
.poster p{margin:0;color:var(--muted);font-size:11px;line-height:1.4}
.tag{display:inline-block;margin-top:8px;font-size:10px;font-family:var(--mono);background:#F8F5EF;border:1px solid var(--line);padding:2px 6px;border-radius:999px}

.color-grid{display:grid;grid-template-columns:280px 1fr;gap:16px}
.swatches{display:grid;gap:10px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px}
.sw{display:flex;align-items:center;gap:12px}
.sw::before{content:"";width:32px;height:32px;border-radius:8px;background:var(--c);border:1px solid var(--line);flex:none}
.sw span{font-size:12px;font-weight:600}
.sw code{margin-left:auto;font-family:var(--mono);font-size:11px;color:var(--muted)}
.color-grid figure{margin:0;background:#000;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.color-grid img{width:100%}

.type-grid{display:grid;grid-template-columns:360px 1fr;gap:16px}
.type-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.display{margin:0;font-size:28px;letter-spacing:-.03em;line-height:1}
.display.outline{color:#fff;-webkit-text-stroke:1px var(--ink);font-size:26px;margin:6px 0}
.display.big{font-size:64px;color:var(--red);margin:8px 0}
.meta-row{display:flex;justify-content:space-between;gap:8px;margin-top:12px;padding-top:12px;border-top:1px solid var(--line);font-size:10px;font-family:var(--mono);color:var(--muted)}
.type-notes{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.type-notes h3{margin:0 0 8px;font-size:13px}
.type-notes ul{margin:0 0 14px;padding-left:16px}
.type-notes li{font-size:12px;color:var(--muted);margin-bottom:4px}
.type-notes li::marker{color:var(--ink)}
.small{margin:0;color:var(--muted);font-size:11px;line-height:1.4}

.grid-demo{display:grid;grid-template-columns:320px 1fr;gap:16px}
.grid-visual{background:#000;border:1px solid var(--line);border-radius:var(--radius);padding:16px;display:grid;place-items:center}
.plate-outline{width:220px;height:160px;background:#fff;border-radius:8px;position:relative;display:grid;place-items:center}
.plate-outline .hole{position:absolute;width:8px;height:8px;background:#000;border-radius:50%}
.hole.tl{top:6px;left:6px}.hole.tr{top:6px;right:6px}.hole.bl{bottom:6px;left:6px}.hole.br{bottom:6px;right:6px}
.hole.ml{top:50%;left:6px;transform:translateY(-50%)}.hole.mr{top:50%;right:6px;transform:translateY(-50%)}.hole.tm{top:6px;left:50%;transform:translateX(-50%)}.hole.bm{bottom:6px;left:50%;transform:translateX(-50%)}
.poster-in-plate{width:70%;height:50%;background:var(--red);border-radius:4px;transform:rotate(-8deg)}

.video-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px}
.video-card{margin:0;background:#000;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.video-card video{width:100%;height:auto}
.video-card figcaption{padding:10px 12px;font-size:11px;color:#fff;background:#000;border-top:1px solid #222}

.timeline{display:grid;grid-template-columns:repeat(6,1fr);gap:8px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:12px}
.tick{text-align:center}
.tick span{display:block;font-family:var(--mono);font-size:11px;font-weight:600}
.tick em{font-size:10px;color:var(--muted);font-style:normal}

.frames h3{margin:0 0 10px;font-size:15px}
.strip{display:grid;gap:8px;margin-bottom:12px}
.strip:nth-of-type(1){grid-template-columns:repeat(6,1fr)}
.strip:nth-of-type(2){grid-template-columns:repeat(6,1fr)}
.strip figure{margin:0;background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.strip img{width:100%;aspect-ratio:1080/720;object-fit:cover}
.strip figure:nth-child(n) img{aspect-ratio:1080/720}
.strip figcaption{padding:6px 8px;font-size:10px;text-align:center;color:var(--muted);border-top:1px solid var(--line)}
.note{color:var(--muted);font-size:11px}

.site-footer{max-width:var(--max);margin:0 auto;padding:24px 18px 40px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:var(--muted);font-size:11px;border-top:1px solid var(--line)}
.site-footer a{color:var(--ink)}

@media (max-width: 900px){
  .cover .cover-grid,.plate-grid,.color-grid,.type-grid,.grid-demo,.video-grid{grid-template-columns:1fr}
  .cover h1{font-size:40px}
  .posters-grid{grid-template-columns:1fr 1fr}
  .strip:nth-of-type(1),.strip:nth-of-type(2){grid-template-columns:repeat(3,1fr)}
}
@media (max-width: 580px){
  .site-header{padding:10px 14px}
  .toc{gap:8px}
  .slide{padding:36px 14px 32px}
  .section-head h2{font-size:22px}
  .posters-grid{grid-template-columns:1fr}
  .strip{grid-template-columns:repeat(2,1fr)!important}
  .facts{grid-template-columns:1fr}
}