:root { --bg:#06060b; --fg:#e8e4dd; --muted:#9a9aae; --accent:#ff6b35; --line:#23233a; --card:rgba(14,14,24,.72); color-scheme:dark; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html:has(body.home) { scroll-behavior:auto; } /* autoplay + rail call scrollTo every frame; smooth scrolling lags and trips the pause-on-manual-scroll check */
body { margin:0; background:var(--bg); color:var(--fg); font:17px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif; overflow-x:hidden; }
h1,h2,h3 { font-family:"Instrument Serif",Georgia,serif; font-weight:400; }
a { color:var(--accent); }
img, iframe, object { max-width:100%; }
img { height:auto; }
.site-header { position:fixed; top:0; left:0; right:0; z-index:70; display:flex; flex-wrap:wrap; gap:.4rem 1.6rem; align-items:baseline; justify-content:flex-start; padding:1.1rem max(16px,3rem) 1.6rem; background:linear-gradient(rgba(6,6,11,.88),rgba(6,6,11,0)); pointer-events:none; }
.site-header a { pointer-events:auto; }
.ssq-page .site-header { position:static; background:#06060b; }
.brand { color:var(--fg); font:400 1.25rem "Instrument Serif",Georgia,serif; letter-spacing:.01em; text-decoration:none; margin-right:.6rem; }
.site-nav { display:flex; flex-wrap:wrap; gap:.3rem 1.4rem; font:400 .62rem "DM Mono",monospace; letter-spacing:.18em; text-transform:uppercase; }
.site-nav a { color:var(--muted); text-decoration:none; }
.site-nav a:hover, .site-nav a[aria-current] { color:var(--accent); }
main { position:relative; z-index:2; max-width:900px; margin:0 auto; padding:2rem 16px 5rem; }
body.amb main { margin:6.5rem auto 4rem; padding:2.2rem clamp(18px,4vw,44px) 3rem; background:rgba(6,6,11,.5); border:1px solid var(--line); border-radius:14px; backdrop-filter:blur(3px); -webkit-backdrop-filter:blur(3px); }
@media (max-width:940px) { body.amb main { margin-left:12px; margin-right:12px; } }
h1 { font-size:clamp(1.7rem,4vw,2.4rem); line-height:1.2; margin:.4rem 0 1rem; }
h2 { margin-top:2.2rem; }
.meta { color:var(--muted); margin-top:-.6rem; }
blockquote { margin:1.5rem 0; padding-left:1rem; border-left:3px solid var(--accent); }
blockquote cite { display:block; color:var(--muted); font-style:normal; }
figure { margin:1.5rem 0; }
figcaption { color:var(--muted); font-size:.9rem; margin-top:.4rem; }
.pair { display:grid; grid-template-columns:1fr 1fr; gap:1rem; }
@media (max-width:640px) { .pair { grid-template-columns:1fr; } }
pre { overflow:auto; padding:1rem; background:var(--card); border:1px solid var(--line); border-radius:8px; font-size:.82rem; line-height:1.5; }
details { background:var(--card); border:1px solid var(--line); border-radius:8px; padding:.7rem 1rem; margin:1rem 0; }
summary { cursor:pointer; font-weight:600; }
.pager { display:flex; justify-content:space-between; gap:1rem; margin-top:3rem; padding-top:1rem; border-top:1px solid var(--line); }
/* about timeline */
.row { display:grid; grid-template-columns:1fr minmax(0,320px); gap:1.5rem; align-items:center; padding:1.4rem 0; border-bottom:1px solid var(--line); }
.row:nth-child(even) { grid-template-columns:minmax(0,320px) 1fr; } .row:nth-child(even) figure { order:-1; }
.row h2 { margin:0 0 .5rem; font-size:1.2rem; } .row p { margin:.2rem 0; color:var(--muted); } .row figure { margin:0; }
@media (max-width:700px) { .row, .row:nth-child(even) { grid-template-columns:1fr; } .row:nth-child(even) figure { order:0; } }
/* cards */
.cards { display:grid; grid-template-columns:repeat(auto-fill,minmax(240px,1fr)); gap:1.2rem; }
.card { background:var(--card); border:1px solid var(--line); border-radius:10px; overflow:hidden; }
.card a { display:block; text-decoration:none; color:var(--fg); } .card img { display:block; width:100%; aspect-ratio:1; object-fit:cover; }
.card p { margin:.7rem 1rem 1rem; } .card p.sub { color:var(--muted); font-size:.88rem; margin-top:-.5rem; }
.wide { grid-column:1/-1; }
/* home */
/* home = Systems experience (systems.css); site chrome only */
.home main { display:none; }
/* scroll sequences */
.ssq { position:relative; margin:0 calc(50% - 50vw); width:100vw; }
.ssq-stick { position:sticky; top:0; height:100vh; display:grid; place-items:center; background:#fff; }
.ssq canvas { width:100%; height:100%; display:block; }
.ssq-caption { position:absolute; left:50%; top:50%; transform:translate(-50%,-50%); text-align:center; text-shadow:0 0 8px #fff; color:#111; font-size:clamp(1.6rem,4vw,3rem); font-weight:700; pointer-events:none; }
.ssq-page main { max-width:none; padding:0; } .ssq-page h1 { display:none; }
.hint { text-align:center; color:var(--muted); }
.file { display:flex; flex-wrap:wrap; gap:1rem; align-items:center; margin:.6rem 0 1.5rem; } .file object { width:100%; height:600px; border:1px solid var(--line); border-radius:8px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior:auto; } }

.gap { margin-top:4rem; }
.tableauPlaceholder { margin:1.5rem 0; }