/* CUDA. One stylesheet for every page. The palette, backdrop and type follow siltide. */
:root{
  --bg:#0d1117; --bg2:#12171f; --panel:#161b22; --panel2:#1b212a; --border:#2a313b;
  --text:#e6edf3; --dim:#8b949e; --dimmer:#586069;
  --accent:#3fb950; --accent2:#56d364; --cool:#58a6ff; --on-accent:#06170b;
  --accent-soft:rgba(63,185,80,.1); --accent-line:rgba(63,185,80,.34);
  --accent-wash:rgba(63,185,80,.05); --cool-line:rgba(88,166,255,.45);
  --nav-bg:rgba(13,17,23,.72);
  --grid-line:rgba(230,237,243,.045); --frame-shadow:0 40px 90px -40px rgba(0,0,0,.85);
  --divider:rgba(230,237,243,.1);
  --card:linear-gradient(160deg, rgba(230,237,243,.045), rgba(230,237,243,.012));
  --card-hover:linear-gradient(160deg, rgba(63,185,80,.09), rgba(230,237,243,.02));
  --glow:radial-gradient(60% 60% at 50% 0%, rgba(63,185,80,.13), transparent 70%);
  --mono: ui-monospace, "JetBrains Mono", "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
html[data-mode="light"]{
  --bg:#f7f5ef; --bg2:#edeae0; --panel:#ffffff; --panel2:#e9e5db; --border:#c9c6bc;
  --text:#2b2b2b; --dim:#5f5e57; --dimmer:#7d7a70;
  --accent:#1a7f37; --accent2:#1a7f37; --cool:#0b5cad; --on-accent:#ffffff;
  --accent-soft:rgba(26,127,55,.08); --accent-line:rgba(26,127,55,.32);
  --accent-wash:rgba(26,127,55,.045); --cool-line:rgba(11,92,173,.45);
  --nav-bg:rgba(247,245,239,.8);
  --grid-line:rgba(43,43,43,.06); --frame-shadow:0 26px 60px -30px rgba(43,43,43,.28);
  --divider:rgba(43,43,43,.12);
  --card:linear-gradient(160deg, rgba(43,43,43,.04), rgba(43,43,43,.01));
  --card-hover:linear-gradient(160deg, rgba(26,127,55,.07), rgba(43,43,43,.02));
  --glow:radial-gradient(60% 60% at 50% 0%, rgba(26,127,55,.08), transparent 70%);
}
*{box-sizing:border-box}
html{background:var(--bg);scroll-behavior:smooth}
body{margin:0;color:var(--text);font-family:var(--sans);line-height:1.65;font-size:16px;
  -webkit-font-smoothing:antialiased;
  padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .cores i{transform:scaleY(.32)!important}
}

/* A fixed backdrop: a faint chip-like grid under everything, static and
   low-contrast enough to read text over. */
.gpu-bg{position:fixed;inset:0;z-index:-1;background:var(--bg);overflow:hidden}
.gpu-bg .grid-lines{position:absolute;inset:-1px;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size:44px 44px;
  mask-image:radial-gradient(120% 90% at 50% 0%, #000 25%, transparent 78%);
}
img{max-width:100%;display:block}
a{color:var(--accent2);text-underline-offset:3px}
[hidden]{display:none!important}
.wrap{max-width:1100px;margin:0 auto;padding-inline:20px}
@media (max-width:420px){.wrap{padding-inline:16px}}
.wrap.narrow{max-width:760px}
code,.mono,kbd,table,.eyebrow{font-family:var(--mono)}
code{font-size:.92em}

/* Type: headings are monospaced and set tight, prose is not. */
h1,h2,h3{font-family:var(--mono);font-weight:700;letter-spacing:-.03em;line-height:1.08;margin:0}
h1{font-size:clamp(1.85rem,6.2vw,4.4rem)}
h2{font-size:clamp(1.5rem,4vw,2.9rem);margin:0 0 .35em}
h3{font-size:1.06rem;letter-spacing:-.01em}
p{margin:0 0 1rem}
.lede{color:var(--dim);margin:0 0 1.7rem;font-size:1.06rem;max-width:64ch}
h1+.lede,h2+.lede{margin-top:.75rem}
.note{color:var(--dim);font-size:.9rem;max-width:74ch}

/* An eyebrow numbers the sections, which gives a long page a spine to
   scroll along instead of nine identical headings. */
.eyebrow{display:flex;align-items:center;gap:10px;font-size:.74rem;letter-spacing:.18em;
  text-transform:uppercase;color:var(--dim);margin:0 0 14px}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--accent);flex:none}
.eyebrow b{color:var(--accent);font-weight:700}

section{padding:clamp(52px,5.4vw,82px) 0;position:relative}
section:last-of-type{padding-bottom:clamp(44px,5vw,68px)}
/* Alternating bands carry the rhythm where a page has them; a page that runs
   straight through still gets a rule between sections, and never both. */
.band{background:var(--bg2);border-block:1px solid var(--divider)}
section+section:not(.band){border-top:1px solid var(--divider)}
.band+section{border-top:none}

.skip-link{position:absolute;left:8px;top:calc(-48px - env(safe-area-inset-top,0px));z-index:100;
  background:var(--accent);color:var(--on-accent);font-family:var(--mono);font-weight:700;font-size:.85rem;
  text-decoration:none;padding:8px 14px;border-radius:6px;transition:top .15s ease}
.skip-link:focus{top:calc(8px + env(safe-area-inset-top,0px))}

nav{position:sticky;top:env(safe-area-inset-top,0px);z-index:10;background:var(--nav-bg);
  backdrop-filter:blur(11px);border-bottom:1px solid var(--border)}
nav .wrap{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:20px;height:58px}
.brand{display:flex;align-items:center;gap:8px;font-family:var(--mono);font-weight:700;color:var(--text);
  text-decoration:none;white-space:nowrap;justify-self:start;grid-column:1;letter-spacing:-.02em}
.brand img{width:22px;height:22px}
nav a.link{color:var(--dim);text-decoration:none;font-size:.9rem;white-space:nowrap;
  font-family:var(--mono);transition:color .15s ease}
nav a.link:hover{color:var(--text)}
.nav-sections{display:flex;gap:22px;justify-self:center;grid-column:2}
.nav-right{display:flex;align-items:center;gap:14px;min-width:0;justify-self:end;grid-column:3}
.lang-btn,.mode-btn{font-family:var(--mono);font-size:.78rem;background:none;border:1px solid var(--border);
  color:var(--dim);border-radius:999px;padding:4px 11px;cursor:pointer;white-space:nowrap;flex:none;
  transition:color .15s ease,border-color .15s ease}
.lang-btn:hover,.mode-btn:hover{color:var(--text);border-color:var(--dimmer)}
/* How far down the page you are, drawn on the navigation's own bottom edge. */
.progress{position:absolute;left:0;bottom:-1px;height:2px;width:0;
  background:linear-gradient(90deg,var(--cool),var(--accent));transition:width .1s linear}
@media (max-width:700px){.nav-sections{display:none}}

/* Hero */
.hero{padding:clamp(44px,5.5vw,76px) 0 clamp(40px,4.5vw,60px);overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:var(--glow);pointer-events:none}
.hero .wrap{position:relative;z-index:1}
.hero .cores{position:absolute;left:0;right:0;top:0;height:230px;display:flex;
  align-items:flex-start;gap:clamp(2px,.6vw,9px);padding-inline:3vw;opacity:.34;z-index:0}
.hero .cores i{flex:1;min-width:2px;height:100%;border-radius:0 0 3px 3px;font-style:normal;
  background:linear-gradient(to bottom, var(--accent), transparent 82%);
  transform-origin:top;animation:gpuPulse 4s ease-in-out infinite}
.hero .cores i:nth-child(3n){background:linear-gradient(to bottom,#1a7f37,transparent 82%)}
.hero .cores i:nth-child(5n){background:linear-gradient(to bottom,var(--accent2),transparent 82%)}
.hero .cores i:nth-child(8n){background:linear-gradient(to bottom,var(--cool),transparent 82%)}
.hero .cores i:nth-child(2n){animation-duration:5.5s;animation-delay:-1.3s}
.hero .cores i:nth-child(3n+1){animation-duration:3.2s;animation-delay:-2.1s}
.hero .cores i:nth-child(4n+2){animation-duration:6.4s;animation-delay:-.6s}
.hero .cores i:nth-child(7n){animation-duration:2.6s;animation-delay:-3.4s}
.hero .cores i:nth-child(11n){animation-duration:7.1s;animation-delay:-4.8s}
@keyframes gpuPulse{0%,100%{transform:scaleY(.1)}50%{transform:scaleY(1)}}
.hero h1{margin:0 0 .35em;max-width:17ch}
.hero h1 .accent{background:linear-gradient(100deg,var(--accent) 5%,var(--accent2) 60%,var(--cool) 135%);
  -webkit-background-clip:text;background-clip:text;color:transparent}
.hero .lede{font-size:clamp(1rem,1.6vw,1.16rem);max-width:60ch;margin-bottom:1.8rem}
.tagline{display:inline-flex;align-items:center;gap:9px;font-family:var(--mono);font-size:.78rem;
  letter-spacing:.06em;color:var(--dim);border:1px solid var(--border);background:var(--panel);
  border-radius:999px;padding:5px 14px;margin:0 0 22px}
.tagline .dot{width:7px;height:7px;border-radius:50%;background:var(--cool);flex:none;
  box-shadow:0 0 0 0 var(--cool-line);animation:ping 2.6s ease-out infinite}
@keyframes ping{0%{box-shadow:0 0 0 0 var(--cool-line)}70%,100%{box-shadow:0 0 0 9px transparent}}
.cta{display:flex;gap:12px;flex-wrap:wrap;margin:0 0 20px}
.btn{font-family:var(--mono);font-size:.92rem;padding:11px 20px;border-radius:9px;text-decoration:none;
  border:1px solid var(--border);display:inline-flex;align-items:center;gap:8px;
  transition:transform .15s ease,border-color .15s ease,box-shadow .15s ease}
.btn:hover{transform:translateY(-2px)}
.btn.primary{background:var(--accent);color:var(--on-accent);
  border-color:transparent;font-weight:700;box-shadow:0 10px 30px -14px var(--accent)}
.btn.primary:hover{box-shadow:0 16px 34px -14px var(--accent)}
.btn.ghost{color:var(--text);background:var(--panel)}
.btn.ghost:hover{border-color:var(--dimmer)}
/* The one-line claim strip under the buttons: three facts, no adjectives. */
.facts{display:flex;flex-wrap:wrap;gap:0 26px;font-family:var(--mono);font-size:.82rem;color:var(--dim);
  margin:0 0 26px;padding:0;list-style:none}
.facts li{display:flex;align-items:center;gap:7px}
.facts b{color:var(--text);font-weight:700}
.facts li+li::before{content:"";width:4px;height:4px;border-radius:50%;background:var(--dimmer);
  margin-right:19px;flex:none}

/* The terminal frame the recording plays in. */
.frame{border-radius:14px;overflow:hidden;border:1px solid var(--border);box-shadow:var(--frame-shadow);
  position:relative}
.frame::after{content:"";position:absolute;inset:0;pointer-events:none;border-radius:14px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06)}
.frame img{width:100%}
.term{background:#0d1117}
.termbar{display:flex;align-items:center;gap:7px;padding:9px 12px;background:#161b22;border-bottom:1px solid #21262d}
.termbar i{width:11px;height:11px;border-radius:50%;background:#ff5f57}
.termbar i:nth-child(2){background:#febc2e}
.termbar i:nth-child(3){background:#28c840}
.termbar span{flex:1;text-align:center;font-size:.78rem;color:#8b949e;font-family:var(--mono)}
/* Cards */
.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}
.card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:22px;
  display:flex;flex-direction:column;position:relative;overflow:hidden;
  transition:transform .2s ease,border-color .2s ease,background .2s ease}
.card:hover{transform:translateY(-3px);border-color:var(--dimmer);background:var(--card-hover)}
.card .q{font-family:var(--mono);color:var(--text);font-weight:700;margin:0 0 10px;font-size:1rem;
  letter-spacing:-.015em;line-height:1.35}
.card .tab{display:inline-block;align-self:flex-start;font-family:var(--mono);font-size:.72rem;
  letter-spacing:.06em;color:var(--accent);background:var(--accent-soft);
  border:1px solid var(--accent-line);border-radius:999px;padding:3px 10px;margin-bottom:12px}
.card p{margin:0;color:var(--dim);font-size:.93rem}
kbd{font-family:var(--mono);background:var(--panel2);border:1px solid var(--border);border-bottom-width:2px;
  border-radius:6px;padding:2px 8px;font-size:.82rem;color:var(--text)}

table{width:100%;border-collapse:collapse;font-size:.88rem}
th,td{text-align:left;padding:10px;border-bottom:1px solid var(--border)}
th:first-child,td:first-child{padding-left:0}
th:last-child,td:last-child{padding-right:0}
th{color:var(--dim);font-weight:700;font-size:.74rem;text-transform:uppercase;letter-spacing:.08em}
tbody tr:hover td,table tr:hover td{background:var(--accent-wash)}
.tablewrap{overflow-x:auto}
footer{padding:30px 0 44px;color:var(--dim);font-size:.85rem;border-top:1px solid var(--divider)}
footer .row{display:flex;flex-wrap:wrap;gap:18px;justify-content:space-between;align-items:center}
footer a{color:var(--dim)}
footer a:hover{color:var(--text)}

/* Sections arrive as you reach them. Without JS, or with reduced motion
   asked for, everything is simply visible. */
.reveal{opacity:0;transform:translateY(18px)}
.revealed{opacity:1;transform:none;transition:opacity .6s cubic-bezier(.2,.7,.2,1),transform .6s cubic-bezier(.2,.7,.2,1)}
@media (prefers-reduced-motion: reduce){.reveal{opacity:1;transform:none}}

html[data-mode="light"] .term{background:var(--panel)}
html[data-mode="light"] .termbar{background:var(--panel2);border-bottom-color:var(--border)}
.term{background:var(--bg)}
.termbar{background:var(--panel);border-bottom-color:var(--border)}
.termbody{padding:18px}
nav a.link.on{color:var(--text)}
code{background:var(--panel2);border:1px solid var(--border);border-radius:5px;padding:.08em .38em}
pre code,.term code{background:none;border:0;padding:0}

.sponsors .logos{display:flex;gap:34px;align-items:center;flex-wrap:wrap;margin-bottom:16px}
.sponsors img{height:auto}
.sponsors img{background:#fff;border-radius:10px;padding:10px 14px;box-sizing:content-box}

/* Lesson pages: the track's lessons on the left, the reading column on the right. */
.doc{display:grid;grid-template-columns:230px minmax(0,1fr);gap:48px;padding-top:40px;padding-bottom:64px}
.side details{position:sticky;top:78px;max-height:calc(100vh - 100px);overflow:auto}
.side summary{font-family:var(--mono);font-size:.74rem;letter-spacing:.18em;text-transform:uppercase;
  color:var(--dim);list-style:none;margin-bottom:10px;cursor:default}
.side summary::-webkit-details-marker{display:none}
.side ol{list-style:none;margin:0;padding:0;border-left:1px solid var(--border)}
.side a{display:flex;gap:10px;padding:6px 12px;margin-left:-1px;border-left:2px solid transparent;
  color:var(--dim);text-decoration:none;font-size:.86rem;line-height:1.35}
.side a span{font-family:var(--mono);font-size:.74rem;color:var(--dimmer);flex:none;padding-top:.1em}
.side a:hover{color:var(--text)}
.side a.on{color:var(--text);border-left-color:var(--accent);background:var(--accent-wash)}
.side a.on span{color:var(--accent)}
main{min-width:0;max-width:780px}
@media (max-width:900px){
  .doc{grid-template-columns:1fr;gap:18px;padding-top:24px}
  .side details{position:static;max-height:none;border:1px solid var(--border);border-radius:12px;padding:12px 14px;background:var(--card)}
  .side details:not([open]) summary{margin:0}
  .side summary{cursor:pointer}
  .side summary::after{content:" ▾";color:var(--accent)}
}

.prose{font-size:1.02rem}
.prose h1{font-size:clamp(1.8rem,4.4vw,2.8rem);margin:0 0 .6em}
.prose h2{font-size:clamp(1.25rem,2.6vw,1.6rem);margin:2.2em 0 .7em;padding-top:.2em}
.prose h3{margin:1.8em 0 .6em}
.prose h2 code,.prose h3 code,.prose h1 code{font-size:.9em}
.prose ul,.prose ol{padding-left:1.3em;margin:0 0 1rem}
.prose li{margin:.3em 0}
.prose img{border-radius:12px;border:1px solid var(--border);margin:1.2em 0;background:#fff}
.prose blockquote{margin:1.2em 0;padding:.2em 0 .2em 18px;border-left:2px solid var(--accent);color:var(--dim)}
.prose table{margin:1.2em 0;display:block;overflow-x:auto}
.prose hr{border:0;border-top:1px solid var(--divider);margin:2em 0}
.prose p:has(> cuda-launch:only-child),.prose p:has(> sm-scheduler:only-child){margin:0}
.highlight{position:relative;margin:0 0 1.2rem}
pre{background:var(--panel2);border:1px solid var(--border);border-radius:12px;padding:16px 18px;margin:0 0 1.2rem;
  overflow-x:auto;font-size:.86rem;font-family:var(--mono);line-height:1.6}
.highlight pre{margin:0}
.copy{position:absolute;top:10px;right:10px;font-family:var(--mono);font-size:.72rem;background:var(--panel);
  border:1px solid var(--border);color:var(--dim);border-radius:6px;padding:3px 9px;cursor:pointer;opacity:0;transition:opacity .15s ease}
.highlight:hover .copy,.copy:focus{opacity:1}
.copy:hover{color:var(--text);border-color:var(--dimmer)}
/* Pygments tokens, drawn from the page's own palette so both modes match. */
.highlight .c,.highlight .c1,.highlight .cm,.highlight .ch{color:var(--dimmer);font-style:italic}
.highlight .k,.highlight .kt,.highlight .kd,.highlight .kr{color:var(--cool)}
.highlight .cp,.highlight .cpf{color:#d2a8ff}
.highlight .s,.highlight .s1,.highlight .s2,.highlight .se,.highlight .si{color:var(--accent2)}
.highlight .mi,.highlight .mf,.highlight .m{color:#ffa657}
.highlight .nf,.highlight .fm{color:#e3b341}
.highlight .o,.highlight .p{color:var(--dim)}
html[data-mode="light"] .highlight .cp,html[data-mode="light"] .highlight .cpf{color:#8250df}
html[data-mode="light"] .highlight .mi,html[data-mode="light"] .highlight .m{color:#bc4c00}
html[data-mode="light"] .highlight .nf{color:#9a6700}

.pager{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:56px}
.pager .card{text-decoration:none;color:var(--text);padding:16px 18px}
.pager .card b{font-family:var(--mono);font-size:.92rem}
.pager .next{text-align:right;grid-column:2}
.pager .next .tab{align-self:flex-end}
@media (max-width:560px){.pager{grid-template-columns:1fr}.pager .next{grid-column:1}}

/* Diagrams. Each lane is one thread, each row one warp of 32 lanes. */
.dg{display:block}
.dg{font-family:var(--mono);font-size:.84rem;color:var(--text)}
.prose .dg{margin:1.4em 0 1.6em;border:1px solid var(--border);border-radius:14px;background:var(--panel);padding:18px}
.dg-head{display:flex;flex-wrap:wrap;gap:14px 26px;align-items:center;justify-content:space-between;margin-bottom:14px}
.dg-call{font-size:1.05rem;white-space:nowrap;background:none;border:0;padding:0}
.dg-call .fn{color:#e3b341}.dg-call .n{color:var(--accent2);font-weight:700}
html[data-mode="light"] .dg-call .fn{color:#9a6700}
.dg-ctl{display:flex;flex-wrap:wrap;gap:10px 22px}
.dg-ctl label{display:flex;align-items:center;gap:10px;color:var(--dim);font-size:.78rem}
.dg-ctl input{accent-color:var(--accent);width:130px}
.dg-stats{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:14px}
.dg-stats span{border:1px solid var(--border);border-radius:999px;padding:3px 11px;color:var(--dim);font-size:.76rem;background:var(--bg)}
.dg-stats b{color:var(--text)}
.dg-grid{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr));
  border:1px dashed var(--border);border-radius:12px;padding:12px;position:relative}
.dg-grid::before{content:"grid";position:absolute;top:-.7em;left:12px;background:var(--panel);padding:0 6px;color:var(--dimmer);font-size:.72rem}
.term .dg-grid::before{background:var(--bg)}
html[data-mode="light"] .term .dg-grid::before{background:var(--panel)}
.dg-block{border:1px solid var(--border);border-radius:10px;padding:10px;background:var(--bg2)}
.dg-bh{display:flex;justify-content:space-between;color:var(--dim);font-size:.72rem;margin-bottom:8px}
.dg-bh b{color:var(--text)}
.dg-cells{display:grid;grid-template-columns:repeat(32,1fr);gap:1px}
.dg-cells i{aspect-ratio:1;border-radius:1.5px;background:var(--border);opacity:.35;cursor:crosshair}
.dg-cells i.a{opacity:1}
.dg-cells i.w0{background:var(--accent)}.dg-cells i.w1{background:var(--cool)}
.dg-cells i.w2{background:#e3b341}.dg-cells i.w3{background:#bc8cff}
.dg-cells i.hot{outline:2px solid var(--text);outline-offset:1px;position:relative;z-index:1}
.dg-cells.same i.a:not(.mate){opacity:.35}
.dg-read{margin-top:12px;min-height:3.2em;color:var(--dim);font-size:.8rem;line-height:1.6}
.dg-read b{color:var(--text)}.dg-read em{font-style:normal;color:var(--accent)}
.dg-err{grid-column:1/-1;border:1px solid #f85149;border-radius:10px;padding:16px;color:var(--text);background:rgba(248,81,73,.08)}
.dg-err b{color:#f85149}
.dg-legend{display:flex;gap:14px;flex-wrap:wrap;color:var(--dimmer);font-size:.72rem;margin-top:10px}
.dg-legend i{display:inline-block;width:9px;height:9px;border-radius:2px;margin-right:6px;vertical-align:-1px}

.dg-sched{display:grid;gap:14px}
.dg-queue{display:flex;gap:8px;flex-wrap:wrap;min-height:34px;align-items:center}
.dg-queue:empty::after{content:"queue empty";color:var(--dimmer);font-size:.76rem}
.dg-chip{border:1px solid var(--accent-line);background:var(--accent-soft);color:var(--text);border-radius:8px;
  padding:5px 10px;font-size:.78rem;position:relative;overflow:hidden;white-space:nowrap}
.dg-chip::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:var(--p,0%);background:var(--accent);
  transition:width var(--d,0s) linear}
.dg-sms{display:grid;gap:10px;grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}
.dg-sm{border:1px solid var(--border);border-radius:10px;padding:10px;background:var(--bg2);min-height:78px}
.dg-sm>span{display:block;color:var(--dim);font-size:.72rem;margin-bottom:8px}
.dg-out{background:var(--bg);border:1px solid var(--border);border-radius:10px;padding:10px 12px;min-height:4.4em;
  color:var(--dim);font-size:.78rem;line-height:1.7}
.dg-out b{color:var(--accent2);font-weight:400}
.dg-btn{font-family:var(--mono);font-size:.82rem;padding:7px 14px;border-radius:8px;cursor:pointer;
  background:var(--accent);color:var(--on-accent);border:0;font-weight:700}
.dg-btn:disabled{opacity:.5;cursor:default}

/* GPU track diagrams. Shared pieces first: title, segmented tabs, the click-to-read info panel. */
.dg-title{font-family:var(--mono);font-weight:700;font-size:.95rem;letter-spacing:-.01em}
.dg-title.sub{margin:22px 0 10px;font-size:.82rem;color:var(--dim)}
.dg-note{color:var(--dim);font-size:.76rem}
.dg-tabs{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:12px}
.dg-head .dg-tabs{margin:0}
.dg-tabs button,.dg [data-k]{font:inherit;font-size:.78rem;color:var(--dim);background:var(--bg);border:1px solid var(--border);
  border-radius:8px;padding:6px 11px;cursor:pointer;transition:color .15s ease,border-color .15s ease,background .15s ease}
.dg-tabs button:hover,.dg [data-k]:hover{color:var(--text);border-color:var(--dimmer)}
.dg-tabs button.on,.dg [data-k].on{color:var(--text);border-color:var(--accent);background:var(--accent-soft)}
.dg-info{margin-top:14px;border-left:2px solid var(--accent);padding:6px 0 6px 14px;color:var(--dim);font-size:.82rem;line-height:1.65;min-height:3.4em}
.dg-info b{color:var(--text)}.dg-info em{font-style:normal;color:var(--accent)}
.dg-lbl{display:block;font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;color:var(--dimmer);margin-bottom:8px}
.dg-scroll{overflow-x:auto}
.dg-facts{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.dg-facts span{border:1px solid var(--border);border-radius:999px;padding:3px 11px;font-size:.74rem;background:var(--bg)}
.dg-dots{display:inline-flex;gap:3px;vertical-align:middle}
.dg-dots i{width:8px;height:8px;border-radius:50%;border:1px solid var(--accent-line)}
.dg-dots i.on{background:var(--accent);border-color:var(--accent)}

.dg-tl{overflow-x:auto;padding-bottom:4px}
.dg-eras{display:flex;gap:4px;min-width:980px;margin-bottom:8px}
.dg-eras span{font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;padding:4px 8px;border-radius:6px;color:var(--dim);
  background:var(--accent-wash);border-top:2px solid var(--dimmer)}
.dg-eras .e1{border-top-color:var(--accent)}.dg-eras .e2{border-top-color:var(--cool)}
.dg-nodes{display:flex;gap:4px;min-width:980px;align-items:stretch}
.dg-nodes button{flex:1;display:flex;flex-direction:column;align-items:flex-start;gap:2px;position:relative;padding:8px 8px 12px;min-width:0}
.dg-nodes button b{color:var(--text);font-size:.78rem;white-space:nowrap}
.dg-nodes button span{font-size:.7rem;color:var(--dimmer)}
.dg-nodes button.dim b{color:var(--dim)}
.dg-nodes button i{display:block;width:100%;height:calc(var(--h) * 44px + 2px);margin-top:auto;padding-top:6px;border-radius:3px 3px 0 0;
  background:linear-gradient(to top,var(--accent-line),var(--accent));opacity:.75}

.dg-dev{margin-bottom:14px}
.dg-dev-h{display:flex;flex-wrap:wrap;gap:6px 14px;align-items:baseline;justify-content:space-between;margin-bottom:8px;font-size:.78rem;color:var(--dim)}
.dg-dev-h b{color:var(--text);font-size:.9rem}
.dg-cores{display:flex;flex-wrap:wrap;gap:3px;margin-bottom:8px}
.dg-cores i{width:10px;height:10px;border-radius:2px;background:var(--border);transition:background .08s ease}
.dg-cores.CPU i{width:30px;height:30px;border-radius:5px}
.dg-cores i.a{background:var(--accent);box-shadow:0 0 8px -2px var(--accent)}
.dg-cores.GPU i.a{background:var(--cool);box-shadow:0 0 8px -2px var(--cool)}
.dg-track{position:relative;height:18px;border-radius:6px;background:var(--bg);border:1px solid var(--border);overflow:hidden}
.dg-track i{position:absolute;inset:0 auto 0 0;width:0;background:linear-gradient(90deg,var(--accent-line),var(--accent))}
.dg-track span{position:absolute;right:8px;top:0;font-size:.72rem;line-height:16px;color:var(--text)}
.dg-dev .dg-ctl input{width:110px}

.dg-anat{display:grid;grid-template-columns:auto auto 1.25fr 1fr;gap:12px;align-items:stretch}
.dg-col{display:flex;flex-direction:column;gap:6px;border:1px dashed var(--border);border-radius:12px;padding:10px}
.dg-anat .tall{flex:1}
.dg-anat .dg-link{align-self:center;border-style:dashed}
.dg-sms{display:grid;grid-template-columns:repeat(4,1fr);gap:5px}
.dg-sms button{padding:8px 2px;font-size:.68rem}
.dg-units{display:grid;grid-template-columns:repeat(2,1fr);gap:5px}
.dg-units button:last-child{grid-column:span 2}
.dg-smx{border-color:var(--accent-line);background:var(--accent-wash)}
@media (max-width:760px){.dg-anat{grid-template-columns:1fr}.dg-anat .dg-link{justify-self:start}}

.dg-mx{border-collapse:separate;border-spacing:5px;min-width:560px;font-size:.78rem}
.dg-mx th,.dg-mx td{border:0;padding:0;background:none!important;vertical-align:middle}
.dg-mx tr:first-child th{text-align:left;color:var(--text);text-transform:none;letter-spacing:0;font-size:.78rem;padding:4px 6px}
.dg-mx tr:first-child th:first-child span{display:block;color:var(--dimmer);font-weight:400;font-size:.68rem}
.dg-mx small{display:block;color:var(--dimmer);font-weight:400;font-size:.66rem}
.dg-mx tr:not(:first-child) th{color:var(--text);text-transform:none;letter-spacing:0;font-size:.8rem;padding-right:8px;white-space:nowrap}
.dg-mx td button{width:100%;text-align:left}
.dg-mx td.row button:not(.on){border-color:var(--accent-line)}
.dg-mx td.col button:not(.on){border-color:var(--cool-line)}
.dg-none{display:block;text-align:center;color:var(--dimmer)}

.dg-cmp{font-size:.8rem;margin:0 0 14px}
.dg-cmp th,.dg-cmp td{padding:7px 10px}
.dg-cmp tr:first-child th{color:var(--text);font-size:.8rem;text-transform:none;letter-spacing:0}
.dg-cmp tr:not(:first-child) th{color:var(--dim);text-transform:none;letter-spacing:0;font-weight:400;font-size:.78rem}
.dg-cmp tr.same td{color:var(--accent)}
.dg-cmp.only-same tr.diff,.dg-cmp.only-diff tr.same{display:none}
.dg-bars{display:grid;gap:6px;margin-bottom:10px}
.dg-bars div{display:grid;grid-template-columns:130px 1fr auto;gap:10px;align-items:center;font-size:.76rem;color:var(--dim)}
.dg-bars i{height:12px;border-radius:3px;background:linear-gradient(90deg,var(--cool),var(--accent))}
.dg-bars b{color:var(--text)}
.dg-bars.tr div{grid-template-columns:150px 1fr 64px}

.dg-board{display:grid;grid-template-columns:1fr 1.6fr 1fr;grid-template-areas:"cool cool cool" "v1 chip v2" "pwr pwr io";gap:8px;
  border:1px solid var(--border);border-radius:14px;padding:12px;background:repeating-linear-gradient(135deg,var(--bg2),var(--bg2) 10px,var(--panel) 10px,var(--panel) 20px)}
.dg-board .p{border:1px solid var(--border);border-radius:9px;padding:10px;background:var(--panel2);text-align:center;font-size:.74rem;color:var(--dim);
  transition:opacity .3s ease,transform .3s ease}
.dg-board .p.off{opacity:.3;transform:scale(.97);border-style:dashed}
.dg-board .cool{grid-area:cool;border-color:var(--cool-line)}
.dg-board .vram{grid-area:v1}.dg-board .v2{grid-area:v2}
.dg-board .chip{grid-area:chip;padding:22px 10px;border:2px solid var(--accent);background:var(--accent-soft)}
.dg-board .chip b{display:block;color:var(--text);font-size:.95rem}
.dg-board .pwr{grid-area:pwr}.dg-board .io{grid-area:io}
.dg-board small{display:block}
.dg-board.dc .io{text-decoration:line-through}

.dg-tree{display:grid;grid-template-columns:180px 1fr;gap:16px;align-items:start}
.dg-node{border:1px solid var(--border);border-radius:9px;padding:9px 11px;background:var(--bg2);font-size:.78rem}
.dg-node.arch{border-color:var(--accent)}
.dg-node small,.dg-leaves small{display:block;color:var(--dimmer);font-size:.68rem}
.dg-branch{display:grid;grid-template-columns:170px 1fr;gap:10px;align-items:center;margin-bottom:8px}
.dg-leaves{display:flex;flex-wrap:wrap;gap:6px}
.dg-leaves button{text-align:left}
.dg-smgrid{display:grid;grid-template-columns:repeat(24,1fr);gap:2px;margin:10px 0;max-width:420px}
.dg-smgrid i{aspect-ratio:1;border-radius:2px;background:var(--border);opacity:.5}
.dg-smgrid i.a{background:var(--accent);opacity:1}
@media (max-width:640px){.dg-tree,.dg-branch{grid-template-columns:1fr}}

.dg-gantt{display:grid;gap:4px;overflow-x:auto}
.dg-gantt div{display:grid;grid-template-columns:62px repeat(14,minmax(18px,1fr));gap:3px;align-items:center;font-size:.72rem;color:var(--dim)}
.dg-gantt i{height:20px;border-radius:3px;background:var(--bg);border:1px solid var(--divider)}
.dg-gantt i.L,.dg-legend i.L{background:var(--cool);border-color:transparent}
.dg-gantt i.C,.dg-legend i.C{background:var(--accent);border-color:transparent}
.dg-gantt i.W,.dg-legend i.W{background:rgba(248,81,73,.35);border-color:transparent}
.dg-ctl label b{color:var(--text)}

.dg-road{height:74px;border-radius:10px;border:1px solid var(--border);background:var(--bg);overflow:hidden;margin:12px 0;padding:6px 0}
.dg-road .lanes{height:100%;display:grid;grid-template-rows:repeat(var(--n),1fr);
  background-image:repeating-linear-gradient(90deg,var(--accent) 0 14px,transparent 14px 34px);background-size:34px 100%;
  -webkit-mask-image:repeating-linear-gradient(180deg,#000 0 2px,transparent 2px calc(62px / var(--n)));
  mask-image:repeating-linear-gradient(180deg,#000 0 2px,transparent 2px calc(62px / var(--n)));
  animation:drive var(--speed) linear infinite}
@keyframes drive{to{background-position:34px 0}}
.dg-big{font-size:.9rem;color:var(--dim)}
.dg-big b{font-size:2rem;color:var(--text);letter-spacing:-.03em}
.dg-big span{margin-left:10px;font-size:.76rem;color:var(--dimmer)}

.dg-rounds{display:flex;gap:3px;align-items:center;height:28px}
.dg-rounds i{flex:none;height:100%;border-radius:4px;background:var(--accent-soft);border:1px solid var(--accent-line);font-style:normal;font-size:.66rem;
  color:var(--dim);display:flex;align-items:center;justify-content:center;overflow:hidden;white-space:nowrap;min-width:0}
.dg-rounds b{margin-left:8px;color:var(--text);font-size:.82rem;white-space:nowrap}

.dg-qa{display:grid;gap:10px;grid-template-columns:repeat(auto-fit,minmax(170px,1fr))}
.dg-qa div{border:1px solid var(--border);border-radius:10px;padding:12px;background:var(--bg2)}
.dg-qa span{display:block;color:var(--dimmer);font-size:.7rem;margin-bottom:6px}
.dg-qa b{display:block;font-size:1rem;color:var(--text)}
.dg-qa small{color:var(--dim);font-size:.72rem}
.dg-qa div:nth-child(3) b{font-size:.86rem}
.dg-qa .clue{border-color:var(--cool-line)}
.dg-qa .clue.fan{border-color:var(--accent-line)}

.dg-ccnum{display:flex;align-items:flex-end;gap:10px;flex-wrap:wrap;margin:6px 0 16px}
.dg-ccnum span{display:flex;flex-direction:column}
.dg-ccnum b{font-size:2.6rem;line-height:1;color:var(--text);letter-spacing:-.04em}
.dg-ccnum span:first-child b{color:var(--accent)}
.dg-ccnum small{font-size:.68rem;color:var(--dimmer)}
.dg-ccnum .dot{font-size:2.6rem;line-height:1;color:var(--dimmer)}
.dg-ccnum .need{margin-left:auto;border:1px solid var(--cool-line);border-radius:10px;padding:8px 12px;font-size:.72rem;color:var(--dim)}
.dg-ccnum .need b{font-size:1.2rem;color:var(--cool)}
.dg-feats{display:grid;gap:8px;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));margin-bottom:10px}
.dg-feats div{border:1px solid var(--border);border-radius:10px;padding:10px 12px;opacity:.55}
.dg-feats div.ok{opacity:1;border-color:var(--accent-line);background:var(--accent-wash)}
.dg-feats span{float:right;color:#f85149}.dg-feats .ok span{color:var(--accent)}
.dg-feats b{display:block;font-size:.8rem}
.dg-feats small{color:var(--dim);font-size:.72rem}

.dg-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;counter-reset:s}
.dg-steps button{text-align:left;padding:12px;position:relative}
.dg-steps button span{display:block;color:var(--accent);font-size:.7rem;margin-bottom:4px}
.dg-steps button:not(:last-child)::after{content:"→";position:absolute;right:-9px;top:50%;transform:translateY(-50%);color:var(--dimmer);font-size:.8rem}
@media (max-width:640px){.dg-steps{grid-template-columns:1fr 1fr}.dg-steps button::after{display:none}}

.dg-lanes{display:grid;gap:6px}
.dg-lanes div{display:flex;gap:4px;align-items:center;font-size:.72rem;color:var(--dim)}
.dg-lanes span{width:100px;flex:none}
.dg-lanes i{width:44px;height:30px;border-radius:5px;display:flex;align-items:center;justify-content:center;font-style:normal;font-size:.66rem;color:var(--on-accent);font-weight:700}
.dg-lanes i.FP{background:var(--accent)}.dg-lanes i.INT{background:var(--cool)}

.dg-flow{display:flex;flex-direction:column;align-items:stretch;gap:20px;font-size:.78rem}
.dg-flow .st{border:1px solid var(--border);border-radius:9px;padding:8px 12px;background:var(--bg2);text-align:center;position:relative}
.dg-flow>.st:not(:last-child)::after,.dg-flow .path .st:not(:last-child)::after{content:"↓";position:absolute;left:50%;bottom:-19px;transform:translateX(-50%);color:var(--accent);font-size:.85rem;z-index:1}
.dg-flow small{display:block;color:var(--dimmer);font-size:.68rem}
.dg-flow .fork{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.dg-flow .path{display:flex;flex-direction:column;gap:20px;border:1px dashed var(--border);border-radius:10px;padding:8px}
.dg-flow .sass,.dg-flow .drv,.dg-flow .gpu{border-color:var(--accent)}
.dg-flow.jit .sass{opacity:.35;border-color:var(--border)}
.dg-flow.jit .ptx,.dg-flow.jit .drv,.dg-flow.jit .gpu{border-color:var(--cool);background:rgba(88,166,255,.08)}

.dg-stack{display:flex;flex-direction:column;gap:5px}
.dg-stack button{display:flex;justify-content:space-between;align-items:baseline;gap:12px;text-align:left;padding:11px 14px}
.dg-stack button b{color:var(--text)}
.dg-stack button small{color:var(--dimmer);font-size:.72rem}
.dg-stack button:nth-child(2){margin-inline:10px}.dg-stack button:nth-child(3){margin-inline:20px}
.dg-stack button:nth-child(4){margin-inline:30px}.dg-stack button:nth-child(5){margin-inline:40px}
.dg-stack button.hw{margin-inline:50px;border-color:var(--accent-line);background:var(--accent-wash)}
@media (max-width:560px){.dg-stack button{margin-inline:0!important;flex-direction:column;gap:2px}}

.dg-wsl{display:flex;flex-direction:column;align-items:center;gap:6px}
.dg-wsl .box{width:100%;max-width:480px;border:1px solid var(--border);border-radius:12px;padding:12px 14px;background:var(--bg2);font-size:.78rem}
.dg-wsl .box b{display:block;margin-bottom:6px}
.dg-wsl .linux{border-color:var(--accent-line)}
.dg-wsl .off{opacity:.55}
.dg-wsl .gpu{text-align:center;border-color:var(--accent);font-weight:700}
.dg-wsl .ok{color:var(--accent)}.dg-wsl .no{color:#f85149}
.dg-wsl .arrow{color:var(--dim);font-size:.76rem}

.dg-prog{height:4px;border-radius:2px;background:var(--border);overflow:hidden;margin-bottom:12px}
.dg-prog i{display:block;height:100%;width:0;background:var(--accent);transition:width .3s ease}
.dg-check{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.dg-check li{display:grid;grid-template-columns:34px 1fr;gap:12px;align-items:start;margin:0}
.dg-check li>button{width:30px;height:30px;border-radius:50%;padding:0;color:transparent;font-size:.9rem}
.dg-check li.done>button{background:var(--accent);border-color:var(--accent);color:var(--on-accent)}
.dg-check li.done b{text-decoration:line-through;color:var(--dim)}
.dg-check pre{margin:6px 0;padding:10px 12px;font-size:.76rem}
.dg-check li>div{min-width:0}
.dg-check small{color:var(--dim);font-size:.74rem}

/* Animations. A running launch dims every lane, then lights each warp as it runs. */
.dg-grid.running .dg-cells i.a{opacity:.18}
.dg-grid.running .dg-cells i.a.ran{opacity:1;animation:pop .35s ease-out}
@keyframes pop{from{transform:scale(1.5);filter:brightness(1.6)}to{transform:none;filter:none}}
.dg-gantt i{transition:opacity .2s ease}
.dg-lanes i{transition:opacity .2s ease}

.dg-sync{display:grid;gap:8px;margin-bottom:12px}
.dg-sync div{display:flex;gap:6px;align-items:center;min-height:38px;flex-wrap:wrap}
.dg-sync span{width:44px;flex:none;font-size:.74rem;color:var(--dim)}
.dg-sync i{font-style:normal;font-size:.74rem;padding:8px 11px;border-radius:8px;border:1px dashed var(--border);color:var(--dimmer);
  transition:all .3s ease}
.dg-sync i.on{border-style:solid;border-color:var(--accent);color:var(--text);background:var(--accent-soft)}
.dg-sync i.wait.on{border-color:var(--cool);background:repeating-linear-gradient(135deg,rgba(88,166,255,.14) 0 8px,transparent 8px 16px);
  background-size:200% 100%;animation:waiting 1s linear infinite}
@keyframes waiting{to{background-position:-22px 0}}
.dg-sync i.dead.on{border-color:#f85149;color:#f85149;background:rgba(248,81,73,.08);text-decoration:line-through}
.dg-term{font-family:var(--mono);font-size:.78rem;line-height:1.7;background:#0d1117;color:#c9d1d9;border:1px solid var(--border);
  border-radius:10px;padding:10px 14px;min-height:5.6em;margin-bottom:12px;overflow-x:auto;white-space:nowrap}
.dg-term .dg-note{color:#8b949e}
.dg-pf{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:12px}
.dg-pf .th{display:flex;flex-wrap:wrap;gap:6px}
.dg-pf .dg-chip{opacity:.45;transition:opacity .3s ease}
.dg-pf .dg-chip.done{opacity:1;border-color:var(--accent)}
.dg-pf .buf{min-height:7em;border:1px dashed var(--border);border-radius:10px;padding:8px 10px;font-size:.76rem;color:var(--text)}
.dg-pf .buf div{animation:pop .35s ease-out}
.dg-ctl .dg-btn{align-self:center}
@media (max-width:560px){.dg-pf{grid-template-columns:1fr}}

/* Every code block is a small window: a title bar naming what it is, the body under it. Output is a dark terminal. */
.prose .highlight{position:relative;margin:0 0 1.2rem}
.prose .highlight pre{padding-top:40px}
.prose .highlight::before{content:"code";position:absolute;top:0;left:0;right:0;height:28px;display:flex;align-items:center;padding:0 14px 0 62px;
  font-family:var(--mono);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--dim);
  background-color:var(--panel);border:1px solid var(--border);border-bottom-color:var(--divider);border-radius:12px 12px 0 0;z-index:1;
  background-image:radial-gradient(circle at 18px 14px,#ff5f57 4.5px,transparent 5px),radial-gradient(circle at 33px 14px,#febc2e 4.5px,transparent 5px),radial-gradient(circle at 48px 14px,#28c840 4.5px,transparent 5px);
  background-repeat:no-repeat}
.prose .language-c::before,.prose .language-cpp::before,.prose .language-cuda::before{content:"cuda c"}
.prose .language-bash::before,.prose .language-sh::before,.prose .language-shell::before{content:"shell"}
.prose .language-text::before{content:"output";color:#8b949e;background-color:#161b22;border-color:#21262d}
.prose .language-text pre{background:#0d1117;color:#c9d1d9;border-color:#21262d}
.prose .highlight .copy{top:3px;right:8px;opacity:.8;z-index:2}

.dg-hier{display:grid;grid-template-columns:1fr 220px;gap:16px;align-items:start}
.dg-hier .hg{border:1.5px dashed var(--accent-line);border-radius:14px;padding:12px;transition:border-color .2s ease,background .2s ease}
.dg-hier>.hg>span,.dg-hier .hb>span{display:block;font-size:.7rem;letter-spacing:.08em;color:var(--dim);margin-bottom:10px}
.dg-hier .hbs{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.dg-hier .hb{border:1px solid var(--border);border-radius:10px;padding:10px;background:var(--bg2);display:grid;gap:6px;transition:border-color .2s ease,background .2s ease}
.dg-hier .ht{border:1px solid var(--border);border-radius:6px;padding:5px 8px;font-size:.72rem;color:var(--text);background:var(--panel);transition:border-color .2s ease,background .2s ease}
.dg-hier .ht.more{color:var(--dimmer);text-align:center}
.dg-hier .hw{border:1px solid var(--border);border-radius:7px;padding:6px;background:var(--panel);transition:border-color .2s ease}
.dg-hier .hw span{display:block;font-size:.66rem;color:var(--dim);margin-bottom:5px}
.dg-hier .dots{display:grid;grid-template-columns:repeat(16,1fr);gap:2px}
.dg-hier .dots i{aspect-ratio:1;border-radius:2px;background:var(--accent);opacity:.3;animation:warprun 2.7s var(--d) ease-in-out infinite}
@keyframes warprun{0%,20%,100%{opacity:.3}8%{opacity:1}}
.dg-hier .hl{display:grid;gap:6px}
.dg-hier .hl button{text-align:left;display:grid;gap:2px}
.dg-hier .hl b{color:var(--text);font-size:.8rem}.dg-hier .hl small{font-size:.7rem;color:var(--dimmer);line-height:1.4}
.dg-hier[data-focus="grid"] .hg{border-color:var(--accent);background:var(--accent-wash)}
.dg-hier[data-focus="block"] .hb{border-color:var(--accent);background:var(--accent-soft)}
.dg-hier[data-focus="warp"] .hw{border-color:var(--accent)}
.dg-hier[data-focus="thread"] .ht:not(.more){border-color:var(--accent);background:var(--accent-soft)}
.dg-hier[data-focus="thread"] .dots i{opacity:1;animation:none}
@media (max-width:640px){.dg-hier{grid-template-columns:1fr}.dg-hier .hbs{grid-template-columns:1fr}}

.dg-ccp{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;position:relative;padding-top:4px}
.dg-ccp>div{border:1px solid var(--border);border-radius:10px;padding:10px;background:var(--bg2);display:grid;gap:6px}
.dg-ccp b{font-size:.82rem}
.dg-ccp .cc{justify-self:start;font-size:.7rem;color:var(--accent);border:1px solid var(--accent-line);background:var(--accent-soft);border-radius:999px;padding:2px 8px}
.dg-ccp .bar{display:grid;gap:3px;font-size:.66rem;color:var(--dimmer)}
.dg-ccp .bar i{display:block;height:8px;border-radius:4px;background:linear-gradient(90deg,var(--accent-line),var(--accent));width:var(--w);animation:grow 1s ease-out both}
.dg-ccp .bar.sm i{background:linear-gradient(90deg,var(--cool-line),var(--cool))}
.dg-ccp .bar em{font-style:normal;color:var(--text);font-size:.72rem}
@keyframes grow{from{width:0}}
@media (max-width:640px){.dg-ccp{grid-template-columns:1fr 1fr}}
.o-num{color:#56d364}.o-dim{color:#586069}.o-note{color:#e3b341}

/* Note / Hint / Watch out callouts. */
.prose blockquote.callout{color:var(--text);border:1px solid var(--border);border-left:3px solid var(--cool);border-radius:10px;
  background:rgba(88,166,255,.06);padding:12px 16px;margin:1.2em 0;font-size:.95rem}
.prose blockquote.callout.tip{border-left-color:var(--accent);background:var(--accent-wash)}
.prose blockquote.callout.warning{border-left-color:#e3b341;background:rgba(227,179,65,.07)}
.prose blockquote.callout p{margin:0 0 .5em}.prose blockquote.callout p:last-child{margin:0}
.callout-t{display:flex;align-items:center;gap:8px;font-family:var(--mono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--cool);margin-bottom:6px}
.callout-t::before{content:"i";display:inline-grid;place-items:center;width:16px;height:16px;border-radius:50%;background:var(--cool);color:var(--bg);font-size:.66rem;font-weight:700;letter-spacing:0}
.callout.tip .callout-t{color:var(--accent)}.callout.tip .callout-t::before{content:"✓";background:var(--accent)}
.callout.warning .callout-t{color:#e3b341}.callout.warning .callout-t::before{content:"!";background:#e3b341}

/* Narrow screens: long inline code and links wrap, lane diagrams shrink instead of overflowing. */
.prose :not(pre)>code,.prose a{overflow-wrap:anywhere}
.dg-lanes i{flex:0 1 44px;min-width:0}
@media (max-width:560px){.dg-lanes span{width:64px}.dg-lanes i{font-size:.5rem;height:24px}}
.dg-lanes,.dg-check{grid-template-columns:minmax(0,1fr)}
.dg-check li{grid-template-columns:34px minmax(0,1fr)}
.prose p,.prose li{overflow-wrap:break-word}
.prose code.nw{white-space:nowrap}
nav .short{display:none}
@media (max-width:700px){
  .nav-sections{display:flex;gap:14px;justify-self:end}
  nav .long,nav .gh{display:none}
  nav .short{display:inline}
  nav .wrap{gap:12px}
  .facts li+li::before{display:none}
  .facts{gap:4px 18px}
}
@media (max-width:560px){.dg-gantt div{grid-template-columns:48px repeat(14,minmax(0,1fr));gap:2px}.dg-gantt{overflow:visible}}
.hero h1{max-width:none;white-space:nowrap;font-size:clamp(1.3rem,5.4vw,4.2rem)}
.hero .lede{max-width:none}
.hero .cta{margin-bottom:32px}

/* Glossary: one card per term. */
.prose ul.glossary{list-style:none;padding:0;display:grid;gap:10px;grid-template-columns:repeat(auto-fill,minmax(220px,1fr))}
.prose ul.glossary li{margin:0;border:1px solid var(--border);border-radius:10px;padding:12px 14px;background:var(--card);display:grid;gap:4px;align-content:start}
.prose ul.glossary .g-term{font-family:var(--mono);font-size:.84rem;color:var(--accent)}
.prose ul.glossary .g-term code{color:var(--accent)}
.prose ul.glossary span{font-size:.88rem;color:var(--dim);line-height:1.5}

/* Home fits one screen: sponsors sit next to the button, hero and explorer are compact. */
.hero{padding:28px 0 22px}
.hero h1{font-size:clamp(1.3rem,4.6vw,3.4rem);margin-bottom:.22em}
.hero .lede{margin-bottom:1.1rem}
.hero .cta{margin-bottom:20px;align-items:center;gap:22px}
.sup{display:flex;align-items:center;gap:10px}
.sup span{font-family:var(--mono);font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:var(--dimmer)}
.sup img{height:30px;width:auto;background:#fff;border-radius:7px;padding:4px 6px;box-sizing:content-box}
.hero .termbody{padding:12px 16px}
.hero .dg-head{margin-bottom:8px}
.hero .dg-stats{margin-bottom:10px}
.hero .dg-read{min-height:1.7em;margin-top:6px}
.hero .dg-legend{margin-top:6px}
footer{padding:16px 0 20px}
footer .sup img{height:22px;padding:3px 5px}
@media (max-width:560px){
  .hero{padding:18px 0 12px}
  .hero .lede{font-size:.95rem;margin-bottom:.9rem}
  .hero .cta{margin-bottom:14px}
  .hero .dg-legend,.hero .dg-read{display:none}
  .hero .dg-ctl{gap:6px 16px}
  footer{padding:12px 0 14px}
  footer .row{gap:8px 16px}
}
@media (max-width:560px){
  .hero .dg-grid{grid-template-columns:1fr 1fr;gap:6px;padding:8px}
  .hero .dg-block{padding:6px}
  .hero .dg-bh span{display:none}
  .hero .termbar{padding:7px 12px}
  .hero .dg-stats span{padding:2px 8px}
}

/* Top bar: gradient wordmark, numbered track pills, icon buttons. */
nav{background:linear-gradient(180deg,var(--nav-bg),var(--nav-bg));box-shadow:0 1px 0 var(--accent-wash),0 10px 30px -20px rgba(0,0,0,.6)}
nav .wrap{height:62px}
.brand{gap:10px;font-size:1.05rem}
.brand img{width:28px;height:28px;border-radius:7px;box-shadow:0 0 0 1px var(--border),0 6px 16px -6px var(--accent)}
.brand .wm{background:linear-gradient(100deg,var(--accent) 0%,var(--accent2) 45%,var(--cool) 120%);-webkit-background-clip:text;background-clip:text;color:transparent;
  font-weight:800;letter-spacing:.02em}
.brand .tag{font-size:.62rem;letter-spacing:.14em;text-transform:uppercase;color:var(--dim);border:1px solid var(--border);border-radius:999px;padding:2px 7px;font-weight:600}
.nav-sections{gap:4px;padding:4px;border:1px solid var(--border);border-radius:999px;background:var(--panel)}
.nav-sections a.link{display:flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;border:1px solid transparent;
  transition:color .15s ease,background .15s ease,border-color .15s ease}
.nav-sections a.link i{font-style:normal;font-size:.68rem;color:var(--dimmer);transition:color .15s ease}
.nav-sections a.link:hover{background:var(--accent-wash)}
.nav-sections a.link.on{color:var(--text);background:var(--accent-soft);border-color:var(--accent-line)}
.nav-sections a.link.on i,.nav-sections a.link:hover i{color:var(--accent)}
.icon-btn{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:50%;border:1px solid var(--border);background:var(--panel);
  color:var(--dim);cursor:pointer;transition:color .15s ease,border-color .15s ease,transform .15s ease;padding:0}
.icon-btn:hover{color:var(--text);border-color:var(--accent-line);transform:translateY(-1px)}
@media (max-width:700px){
  .brand .tag{display:none}
  .nav-sections{gap:2px;padding:3px}
  .nav-sections a.link{padding:5px 10px;gap:6px}
  nav .gh{display:inline-grid}
}
@media (max-width:420px){.nav-sections a.link i{display:none}}
footer a.sponsor{display:inline-flex;align-items:center;gap:6px;text-decoration:none;color:var(--text);border:1px solid rgba(219,97,162,.5);
  background:rgba(219,97,162,.1);border-radius:999px;padding:4px 12px;font-family:var(--mono);font-size:.8rem;transition:background .15s ease,transform .15s ease}
footer a.sponsor svg{color:#db61a2}
footer a.sponsor:hover{background:rgba(219,97,162,.2);transform:translateY(-1px);color:var(--text)}
footer{padding:13px 0 16px}
.sup a{display:inline-flex;border-radius:7px;transition:transform .15s ease,box-shadow .15s ease}
.sup a:hover{transform:translateY(-1px);box-shadow:0 6px 16px -8px var(--accent)}