:root{
  --paper:#f5f3ee; --paper-2:#ebe8e0; --ink:#1c2130; --ink-2:#4a5368; --ink-3:#7a8296;
  --line:#d8d4ca; --blue:#1b2a4a; --blue-2:#2f4f8f; --amber:#c98a12; --amber-soft:#fbefd2;
  --card:#fffdf8; --code-bg:#1b2130; --code-fg:#dfe6f3; --code-dim:#8b97b3; --ok:#2c7a4b;
  --shadow:0 1px 2px rgba(28,33,48,.06),0 8px 24px -12px rgba(28,33,48,.18);
  --font-display:"Bricolage Grotesque",ui-sans-serif,system-ui,sans-serif;
  --font-body:"Source Sans 3",ui-sans-serif,system-ui,sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --gutter:clamp(16px,4vw,40px); --measure:66ch;
}
@media (prefers-color-scheme:dark){ :root:not([data-theme="light"]){
  --paper:#12151d; --paper-2:#191d27; --ink:#e8e9ee; --ink-2:#b2b8c8; --ink-3:#7e8699;
  --line:#2a3040; --blue:#9fb6e6; --blue-2:#7d9bd9; --amber:#f0b84a; --amber-soft:#2d2512;
  --card:#181c26; --code-bg:#0d1017; --code-fg:#d9e0ee; --code-dim:#7c879e; --ok:#5fc48a;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 10px 30px -14px rgba(0,0,0,.7); color-scheme:dark;}}
:root[data-theme="dark"]{
  --paper:#12151d; --paper-2:#191d27; --ink:#e8e9ee; --ink-2:#b2b8c8; --ink-3:#7e8699;
  --line:#2a3040; --blue:#9fb6e6; --blue-2:#7d9bd9; --amber:#f0b84a; --amber-soft:#2d2512;
  --card:#181c26; --code-bg:#0d1017; --code-fg:#d9e0ee; --code-dim:#7c879e; --ok:#5fc48a;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 10px 30px -14px rgba(0,0,0,.7); color-scheme:dark;}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font-body);font-size:18px;line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:var(--blue-2);text-decoration-thickness:1px;text-underline-offset:3px}
h1,h2,h3,h4{font-family:var(--font-display);line-height:1.08;letter-spacing:-.01em;text-wrap:balance;margin:0}
h1{font-size:clamp(2.4rem,6.5vw,4.6rem);font-weight:800}
h2{font-size:clamp(1.7rem,3.6vw,2.5rem);font-weight:700}
h3{font-size:1.25rem;font-weight:600;margin-top:1.6rem}
p{margin:0 0 1rem;max-width:var(--measure)}
.lede{font-size:1.2rem;color:var(--ink-2)}
small,.small{font-size:.9rem;color:var(--ink-2)}
.eyebrow{font-family:var(--font-mono);font-size:.75rem;letter-spacing:.14em;text-transform:uppercase;color:var(--amber);font-weight:600;display:flex;gap:.6rem;align-items:center;margin-bottom:.9rem}
.eyebrow::before{content:"";display:inline-block;width:1.6rem;height:2px;background:var(--amber)}
.wrap{padding-inline:var(--gutter);max-width:1120px;margin-inline:auto}
/* top bar */
.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:10;background:color-mix(in srgb,var(--paper) 88%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding-block:.65rem}
.brand{font-family:var(--font-display);font-weight:800;font-size:1.05rem;white-space:nowrap;flex-shrink:0;color:var(--ink);text-decoration:none;display:flex;align-items:center;gap:.55rem}
.brand svg{width:22px;height:22px}
nav.stops{display:flex;gap:.2rem;overflow-x:auto;scrollbar-width:none;font-family:var(--font-mono);font-size:.74rem}
nav.stops::-webkit-scrollbar{display:none}
nav.stops a{color:var(--ink-2);text-decoration:none;padding:.35rem .55rem;border-radius:6px;white-space:nowrap}
nav.stops a:hover{background:var(--paper-2);color:var(--ink)}
/* hero */
.hero{padding-block:clamp(3rem,8vw,6rem) 2.5rem;display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:clamp(1.5rem,4vw,4rem);align-items:center}
.hero .lede{margin-top:1.2rem}
.hero-art{max-width:100%;justify-self:stretch}
.hero-art svg{width:100%;height:auto;display:block}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:12px;overflow:hidden;margin-block:1rem 3rem}
.stat{background:var(--card);padding:1rem 1.1rem}
.stat b{display:block;font-family:var(--font-display);font-size:1.9rem;font-weight:800;letter-spacing:-.02em;line-height:1;font-variant-numeric:tabular-nums}
.stat span{display:block;color:var(--ink-2);font-size:.88rem;margin-top:.35rem;line-height:1.3}
/* sections */
section.stop{padding-block:clamp(2.5rem,6vw,4.5rem);border-top:1px solid var(--line)}
.stop-head{display:grid;grid-template-columns:auto 1fr;gap:1.2rem;align-items:start;margin-bottom:1.6rem}
.stop-num{font-family:var(--font-mono);font-weight:600;font-size:.8rem;color:var(--amber);border:1.5px solid var(--amber);border-radius:999px;width:2.6rem;height:2.6rem;display:grid;place-items:center;margin-top:.2rem}
.two{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem 3rem;align-items:start}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:1.2rem 1.3rem;box-shadow:var(--shadow)}
.card h3{margin-top:0}
.card p:last-child,.card ul:last-child{margin-bottom:0}
ul{padding-left:1.2rem;margin:0 0 1rem;max-width:var(--measure)}
li{margin-bottom:.4rem}
li::marker{color:var(--amber)}
/* tables */
.tbl{overflow-x:auto;border:1px solid var(--line);border-radius:12px;background:var(--card);box-shadow:var(--shadow);margin-block:1rem 1.5rem}
table{border-collapse:collapse;width:100%;font-size:.95rem}
th,td{text-align:left;padding:.7rem .9rem;border-bottom:1px solid var(--line);vertical-align:top}
th{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);font-weight:600;background:var(--paper-2)}
tr:last-child td{border-bottom:0}
td.k{font-weight:600;white-space:nowrap}
td.n{font-variant-numeric:tabular-nums;white-space:nowrap}
.tag{display:inline-block;font-family:var(--font-mono);font-size:.68rem;letter-spacing:.06em;padding:.12rem .45rem;border-radius:5px;background:var(--paper-2);color:var(--ink-2);border:1px solid var(--line);white-space:nowrap}
.tag.gpu{background:var(--amber-soft);color:var(--amber);border-color:transparent}
.tag.vm{color:var(--blue-2)}
/* code */
pre.term{background:var(--code-bg);color:var(--code-fg);font-family:var(--font-mono);font-size:.82rem;line-height:1.55;padding:1rem 1.2rem;border-radius:12px;overflow-x:auto;margin:0 0 1.5rem;max-width:100%}
pre.term .c{color:var(--code-dim)} pre.term .y{color:#f0b84a} pre.term .g{color:#7fd39a}
/* timeline */
.tl{list-style:none;padding:0;margin:0;max-width:none;display:grid;gap:0}
.tl li{display:grid;grid-template-columns:7.5rem 1fr;gap:1rem;padding:.75rem 0;border-bottom:1px dashed var(--line);margin:0}
.tl time{font-family:var(--font-mono);font-size:.8rem;color:var(--amber);font-weight:600;padding-top:.2rem}
.tl b{display:block;font-weight:600}
.tl span{color:var(--ink-2);font-size:.95rem}
/* steps */
.steps{counter-reset:s;list-style:none;padding:0;margin:0;max-width:none;display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1rem}
.steps li{counter-increment:s;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:1rem 1.1rem 1rem 3.2rem;position:relative;margin:0;box-shadow:var(--shadow)}
.steps li::before{content:counter(s);position:absolute;left:1rem;top:.95rem;font-family:var(--font-mono);font-weight:600;color:var(--amber);border:1.5px solid var(--amber);border-radius:999px;width:1.6rem;height:1.6rem;display:grid;place-items:center;font-size:.75rem}
.steps b{display:block;font-family:var(--font-display);font-weight:600;margin-bottom:.25rem}
.steps span{font-size:.95rem;color:var(--ink-2)}
/* callout */
.note{border-left:3px solid var(--amber);background:var(--amber-soft);padding:.9rem 1.1rem;border-radius:0 10px 10px 0;max-width:var(--measure);margin-block:1rem 1.5rem}
.note p:last-child{margin:0}
.rules{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:.8rem;list-style:none;padding:0;max-width:none}
.rules li{font-family:var(--font-mono);font-size:.82rem;line-height:1.45;padding:.8rem .9rem;border:1px solid var(--line);border-radius:10px;background:var(--card);margin:0}
.rules li::before{content:"§ ";color:var(--amber)}
/* diagram */
figure{margin:0 0 1.5rem}
figure svg{width:100%;height:auto;display:block;max-width:100%}
figcaption{font-size:.88rem;color:var(--ink-2);margin-top:.5rem;max-width:var(--measure)}
/* footer */
footer{border-top:1px solid var(--line);padding-block:2.5rem 3rem;color:var(--ink-2);font-size:.95rem}
footer .wrap{display:grid;gap:.5rem}
@media (max-width:760px){
  .hero{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stop-head{grid-template-columns:1fr}
  .tl li{grid-template-columns:1fr;gap:.2rem}
  body{font-size:17px}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* site nav */
nav.site{display:flex;gap:.2rem;font-family:var(--font-mono);font-size:.78rem}
nav.site a{color:var(--ink-2);text-decoration:none;padding:.4rem .7rem;border-radius:6px;white-space:nowrap}
nav.site a[aria-current]{color:var(--ink);background:var(--paper-2)}
nav.site a:hover{color:var(--ink)}
.top .wrap{flex-wrap:wrap}
.top .row2{flex-basis:100%;border-top:1px dashed var(--line);margin-top:.3rem;padding-top:.3rem}
.page{padding-block:clamp(2.5rem,6vw,4.5rem)}
.page h1{font-size:clamp(2rem,5vw,3.4rem)}
/* roadmap */
.rm{display:grid;gap:1rem;margin-block:1rem 2rem;max-width:none;padding:0;list-style:none}
.rm li{display:grid;grid-template-columns:7.5rem 1fr;gap:1rem;padding:.9rem 1.1rem;background:var(--card);border:1px solid var(--line);border-radius:12px;margin:0}
.rm .st{font-family:var(--font-mono);font-size:.7rem;letter-spacing:.08em;text-transform:uppercase;font-weight:600;padding-top:.15rem}
.st.doing{color:var(--ok)} .st.next{color:var(--amber)} .st.plan{color:var(--blue-2)} .st.idea{color:var(--ink-3)} .st.blocked{color:#c0392b}
.rm b{display:block;font-family:var(--font-display);font-weight:600;font-size:1.05rem}
.rm span{color:var(--ink-2);font-size:.95rem;display:block;margin-top:.2rem}
.legend{display:flex;flex-wrap:wrap;gap:.6rem 1.2rem;font-family:var(--font-mono);font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-2);margin-bottom:1rem}
.legend span::before{content:"●";margin-right:.4rem}
.legend .doing::before{color:var(--ok)} .legend .next::before{color:var(--amber)} .legend .plan::before{color:var(--blue-2)} .legend .idea::before{color:var(--ink-3)} .legend .blocked::before{color:#c0392b}
/* form */
form.contact{display:grid;gap:1rem;max-width:40rem}
form.contact label{display:grid;gap:.35rem;font-weight:600;font-size:.95rem}
form.contact input,form.contact textarea{font:inherit;font-size:1rem;padding:.65rem .8rem;border:1px solid var(--line);border-radius:8px;background:var(--card);color:var(--ink);width:100%}
form.contact input:focus,form.contact textarea:focus{outline:2px solid var(--amber);outline-offset:1px;border-color:transparent}
form.contact textarea{min-height:10rem;resize:vertical}
form.contact button{font:inherit;font-weight:600;font-family:var(--font-display);padding:.75rem 1.4rem;border-radius:8px;border:0;background:var(--blue);color:#fff;cursor:pointer;justify-self:start}
:root[data-theme="dark"] form.contact button{color:var(--paper)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) form.contact button{color:var(--paper)}}
form.contact button[disabled]{opacity:.6;cursor:default}
.status{font-size:.95rem;min-height:1.4rem}
.status.ok{color:var(--ok)} .status.err{color:#c0392b}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
/* links */
.video{position:relative;aspect-ratio:16/9;max-width:100%;border-radius:12px;overflow:hidden;background:var(--code-bg);border:1px solid var(--line);box-shadow:var(--shadow)}
.video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.linklist{list-style:none;padding:0;max-width:none;display:grid;gap:1rem;grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.linklist li{margin:0}
.linklist .card{height:100%}
.linklist .card h3{font-size:1.1rem}
@media (max-width:760px){.rm li{grid-template-columns:1fr;gap:.3rem}}