/* =====================================================================
   SGLang × AMD Instinct — Serving Datasheet
   Design system: cool technical paper, IBM Plex + Space Grotesk.
   Color semantics:  red = physical limit / AMD brand / warning
                     teal = measured / verified data
   ===================================================================== */

:root {
  --paper:        #eef1f4;   /* page — cool technical paper, not cream */
  --paper-card:   #f8f9fb;   /* card surface */
  --paper-sunk:   #e3e7ec;   /* sunken panels / code */
  --paper-rail:   #e8ebef;   /* matrix / rails */
  --ink:          #15181e;   /* primary text */
  --ink-2:        #3a4049;   /* secondary text */
  --graphite:     #6b727b;   /* labels / muted */
  --graphite-2:   #969ca4;   /* faint */
  --rule:         #d3d9e0;   /* hairlines */
  --rule-2:       #c0c8d1;   /* stronger hairlines */
  --red:          #ed1c24;   /* AMD brand + SOL ceiling */
  --red-ink:      #c2121a;   /* red text on light */
  --red-wash:     #fbe9ea;
  --red-line:     #f4b7ba;
  --measured:     #0e6e78;   /* teal: measured / verified */
  --measured-ink: #0a565e;
  --measured-wash:#e0eef0;
  --warn-ink:     #8a5200;   /* gotcha text */
  --warn-wash:    #f7ecd9;

  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --sans: "IBM Plex Sans", system-ui, -apple-system, sans-serif;
  --disp: "Space Grotesk", var(--sans);

  --maxw: 1180px;
  --radius: 4px;
  --shadow-card: 0 1px 0 rgba(21,24,30,.04), 0 1px 3px rgba(21,24,30,.05);
  --ease: cubic-bezier(.2,.6,.2,1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* faint engineering grid — used ONCE, behind the masthead only */
.grid-bg {
  background-image:
    linear-gradient(var(--rule) 1px, transparent 1px),
    linear-gradient(90deg, var(--rule) 1px, transparent 1px);
  background-size: 26px 26px;
  background-position: -1px -1px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0,0,0,.5), transparent 75%);
          mask-image: linear-gradient(180deg, rgba(0,0,0,.5), transparent 75%);
  opacity: .55;
}

a { color: var(--measured-ink); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 2px; }

h1,h2,h3,h4 { font-family: var(--disp); font-weight: 600; letter-spacing: -0.01em; margin: 0; color: var(--ink); }
code, kbd, pre, .mono { font-family: var(--mono); }
.tnum { font-variant-numeric: tabular-nums; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* eyebrow / section labels — datasheet field labels */
.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--graphite);
}

/* ---------------------------------------------------------------- top bar */
.topbar {
  position: sticky; top: 0; z-index: 60;
  background: rgba(238,241,244,.86);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--rule);
}
.topbar .wrap { display: flex; align-items: center; justify-content: space-between; height: 52px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand .mark { width: 14px; height: 14px; background: var(--red); border-radius: 2px; flex: none; }
.brand .name { font-family: var(--disp); font-weight: 600; font-size: 14px; letter-spacing: .01em; }
.brand .sub { font-family: var(--mono); font-size: 11px; color: var(--graphite); }
.topnav { display: flex; gap: 22px; }
.topnav a { color: var(--graphite); font-size: 13px; }
.topnav a:hover { color: var(--ink); text-decoration: none; }
@media (max-width: 760px) { .topnav { display: none; } }

/* ---------------------------------------------------------------- masthead */
.masthead { position: relative; border-bottom: 1px solid var(--rule); overflow: hidden; }
.masthead .grid-bg { position: absolute; inset: 0; pointer-events: none; }
.masthead .wrap { position: relative; padding-top: 56px; padding-bottom: 44px; }

.partline {
  display: flex; flex-wrap: wrap; gap: 8px 18px; align-items: baseline;
  font-family: var(--mono); font-size: 12px; color: var(--graphite);
  border-bottom: 1px solid var(--rule); padding-bottom: 14px; margin-bottom: 26px;
}
.partline b { color: var(--ink); font-weight: 600; }
.partline .rev { margin-left: auto; }

.masthead h1 {
  font-size: clamp(2.3rem, 5.2vw, 3.7rem);
  line-height: 1.02; letter-spacing: -0.03em; font-weight: 700;
  max-width: 16ch;
}
.masthead h1 .accent { color: var(--red); }
.masthead .thesis {
  margin-top: 18px; max-width: 60ch; font-size: 1.06rem; color: var(--ink-2);
}
.masthead .thesis b { color: var(--ink); font-weight: 600; }

/* hardware spec strip — two real datasheet part rows */
.hwstrip { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 30px; }
@media (max-width: 720px) { .hwstrip { grid-template-columns: 1fr; } }
.hwcard {
  background: var(--paper-card); border: 1px solid var(--rule);
  border-radius: var(--radius); padding: 14px 16px; box-shadow: var(--shadow-card);
}
.hwcard .hwtop { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; }
.hwcard .hwname { font-family: var(--disp); font-weight: 600; font-size: 1.02rem; }
.hwcard .gfx {
  font-family: var(--mono); font-size: 11px; color: var(--ink);
  background: var(--paper-sunk); border: 1px solid var(--rule-2);
  padding: 1px 7px; border-radius: 3px;
}
.hwcard .arch { font-family: var(--mono); font-size: 11px; color: var(--graphite); }
.hwspecs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-top: 12px; }
@media (max-width: 460px) { .hwspecs { grid-template-columns: repeat(2,1fr); } }
.hwspecs .cell .k { font-family: var(--mono); font-size: 10px; letter-spacing: .06em; text-transform: uppercase; color: var(--graphite); }
.hwspecs .cell .v { font-family: var(--disp); font-weight: 600; font-size: 1.02rem; margin-top: 1px; }
.hwspecs .cell .v small { font-weight: 500; font-size: .62em; color: var(--graphite); font-family: var(--mono); }

/* ---------------------------------------------------------------- sections */
section { padding: 46px 0; border-bottom: 1px solid var(--rule); }
.sec-head { display: flex; align-items: baseline; gap: 14px; margin-bottom: 22px; }
.sec-head h2 { font-size: 1.5rem; }
.sec-head .eyebrow { padding-bottom: 2px; }
.sec-note { color: var(--ink-2); max-width: 70ch; }

/* ---------------------------------------------------------------- model tabs */
.modeltabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 22px; }
.mtab {
  font-family: var(--mono); font-size: 12.5px; color: var(--ink-2);
  background: var(--paper-card); border: 1px solid var(--rule);
  padding: 7px 13px; border-radius: 999px; cursor: pointer; transition: all .14s var(--ease);
  display: inline-flex; align-items: center; gap: 8px;
}
.mtab:hover { border-color: var(--rule-2); color: var(--ink); }
.mtab[aria-selected="true"] { background: var(--ink); color: #fff; border-color: var(--ink); }
.mtab[aria-selected="true"] .fam { color: rgba(255,255,255,.55); }
.mtab .fam { color: var(--graphite-2); font-size: 11px; }
.mtab .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--measured); flex: none; }
.mtab .dot.gap { background: var(--graphite-2); }

/* ---------------------------------------------------------------- coverage matrix */
.matrix-wrap { background: var(--paper-card); border: 1px solid var(--rule); border-radius: var(--radius); padding: 16px; margin-bottom: 26px; box-shadow: var(--shadow-card); }
.matrix-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.matrix-head .t { font-family: var(--disp); font-weight: 600; font-size: .98rem; }
.matrix-legend { display: flex; gap: 14px; font-family: var(--mono); font-size: 11px; color: var(--graphite); }
.matrix-legend i { font-style: normal; }
.matrix-legend .v::before { content: "✓"; color: var(--measured); margin-right: 4px; font-style: normal; }
.matrix-legend .g::before { content: "—"; color: var(--graphite-2); margin-right: 4px; }

.matrix { width: 100%; border-collapse: collapse; }
.matrix th, .matrix td { border: 1px solid var(--rule); padding: 0; text-align: center; }
.matrix thead th {
  font-family: var(--mono); font-size: 11px; font-weight: 500; letter-spacing: .04em;
  text-transform: uppercase; color: var(--graphite); padding: 8px 10px; background: var(--paper-rail);
}
.matrix tbody th {
  font-family: var(--mono); font-size: 12px; color: var(--ink); text-align: left;
  padding: 8px 12px; background: var(--paper-rail); white-space: nowrap;
}
.matrix tbody th small { color: var(--graphite); font-size: 10px; }
.mcell { width: 100%; height: 100%; min-height: 42px; border: 0; background: transparent;
  font-family: var(--mono); font-size: 13px; cursor: default; color: var(--graphite-2); padding: 10px; }
.mcell.has { cursor: pointer; color: var(--measured-ink); }
.mcell.has:hover { background: var(--measured-wash); }
.mcell.active { background: var(--ink); color: #fff; }
.mcell.active .tick { color: #fff; }
.mcell .tick { color: var(--measured); font-weight: 600; }
.mcell .tick.doc { color: var(--graphite); }
.mcell.has.doc { color: var(--graphite); }
.mcell.has.doc:hover { background: var(--paper-rail); }
.mcell .lbl { display: block; font-size: 10px; color: inherit; opacity: .8; margin-top: 2px; }

/* ---------------------------------------------------------------- recipe card */
.recipe { background: var(--paper-card); border: 1px solid var(--rule-2); border-radius: 6px; box-shadow: var(--shadow-card); overflow: hidden; }
.recipe[hidden] { display: none; }

.rc-head { padding: 20px 22px; border-bottom: 1px solid var(--rule); display: flex; flex-wrap: wrap; gap: 14px 20px; align-items: flex-start; }
.rc-title { display: flex; flex-direction: column; gap: 6px; min-width: 240px; }
.rc-title .name { font-family: var(--disp); font-weight: 700; font-size: 1.5rem; letter-spacing: -0.02em; }
.rc-title .hf { font-family: var(--mono); font-size: 12px; color: var(--ink-2); }
.rc-title .hf a { color: var(--ink-2); }
.rc-chips { display: flex; flex-wrap: wrap; gap: 7px; margin-left: auto; align-items: center; }
.chip {
  font-family: var(--mono); font-size: 11px; padding: 3px 9px; border-radius: 3px;
  border: 1px solid var(--rule-2); color: var(--ink-2); background: var(--paper-sunk); white-space: nowrap;
}
.chip.gfx { color: var(--ink); border-color: var(--rule-2); background: #fff; }
.chip.fam { color: var(--graphite); }
.badge {
  font-family: var(--mono); font-size: 11px; padding: 3px 9px; border-radius: 3px; white-space: nowrap;
  display: inline-flex; align-items: center; gap: 5px; font-weight: 500;
}
.badge.verified { color: var(--measured-ink); background: var(--measured-wash); border: 1px solid #bcdadd; }
.badge.verified::before { content: "✓"; }
.badge.partial { color: var(--warn-ink); background: var(--warn-wash); border: 1px solid #e6d2ad; }
.badge.gap { color: var(--graphite); background: var(--paper-sunk); border: 1px solid var(--rule-2); }
.badge.gap::before { content: "—"; }

/* spec grid — short datums only; anything sentence-length goes to .rc-notes */
.rc-spec { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); border-bottom: 1px solid var(--rule); }
@media (max-width: 760px) { .rc-spec { grid-template-columns: repeat(2,1fr); } }
.rc-spec .cell { padding: 14px 18px; border-right: 1px solid var(--rule); }
.rc-spec .cell:last-child { border-right: 0; }
.rc-spec .k { font-family: var(--mono); font-size: 10px; letter-spacing: .07em; text-transform: uppercase; color: var(--graphite); }
.rc-spec .v { font-family: var(--disp); font-weight: 600; font-size: 1.04rem; margin-top: 3px; line-height: 1.2; }
.rc-spec .v small { font-family: var(--mono); font-weight: 400; font-size: .68em; color: var(--graphite); }

/* spec values that are sentences: label rail + body type, not display type */
.rc-notes { border-bottom: 1px solid var(--rule); }
.specrow { display: grid; grid-template-columns: 132px minmax(0, 1fr); gap: 18px; padding: 10px 18px; }
.specrow + .specrow { border-top: 1px dashed var(--rule); }
.specrow .k { font-family: var(--mono); font-size: 10px; letter-spacing: .07em; text-transform: uppercase;
  color: var(--graphite); padding-top: 3px; }
.specrow .v { font-size: 13.5px; line-height: 1.55; color: var(--ink-2); max-width: 96ch; }
@media (max-width: 640px) { .specrow { grid-template-columns: 1fr; gap: 3px; } }

/* ---------------------------------------------------------------- summary
   Topic-tagged paragraphs against a label rail. The rail is what makes it
   skimmable: one claim per row, and you can find the row you came for. */
.summary { display: grid; gap: 13px; }
.summary .lede { margin: 0 0 3px; font-size: 1.06rem; line-height: 1.6; color: var(--ink); max-width: 76ch; }
.summary .srow { display: grid; grid-template-columns: 132px minmax(0, 76ch); gap: 18px; }
.summary .st { font-family: var(--mono); font-size: 10px; letter-spacing: .07em; text-transform: uppercase;
  color: var(--graphite); padding-top: 5px; }
.summary .sp { margin: 0; color: var(--ink-2); line-height: 1.68; }
@media (max-width: 640px) { .summary .srow { grid-template-columns: 1fr; gap: 3px; } }

/* Inline identifiers inside prose. No chip background: a summary can carry a
   dozen of them per paragraph, and boxes at that density are their own wall.
   The mono face plus teal for flags is enough to separate code from English. */
.prose code { font-family: var(--mono); font-size: .88em; color: var(--ink); }
.prose code.f { color: var(--measured-ink); }
.prose a.ref { text-decoration: none; }
.prose a.ref code { color: var(--measured-ink); border-bottom: 1px solid #bcdadd; }
.prose a.ref:hover code { border-bottom-color: var(--measured); }

/* card body blocks */
.rc-body { padding: 4px 22px 22px; }
.block { padding-top: 22px; }
.block + .block { border-top: 1px solid var(--rule); margin-top: 22px; }
.block > h3 { font-size: 1.04rem; display: flex; align-items: baseline; gap: 10px; margin-bottom: 12px; }
.block > h3 .hint { font-family: var(--mono); font-size: 11px; font-weight: 400; color: var(--graphite); letter-spacing: 0; }
.block .lead { color: var(--ink-2); margin: -4px 0 14px; max-width: 78ch; }

/* ---------------------------------------------------------------- roofline gauge (SIGNATURE) */
.roofline { display: grid; gap: 18px; }
.gauge { }
.gauge-top { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 7px; }
.gauge-label { font-family: var(--mono); font-size: 12px; letter-spacing: .06em; text-transform: uppercase; color: var(--ink); }
.gauge-label .bound { color: var(--graphite); text-transform: none; letter-spacing: 0; margin-left: 8px; }
.gauge-pct { font-family: var(--disp); font-weight: 700; font-size: 1.5rem; line-height: 1; letter-spacing: -0.02em; }
.gauge-pct small { font-size: .5em; color: var(--graphite); font-weight: 500; margin-left: 3px; }

.track {
  position: relative; height: 30px; background: var(--paper-sunk);
  border: 1px solid var(--rule-2); border-radius: 3px; overflow: hidden;
}
/* faint scale gridlines at 25/50/75 */
.track::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(90deg, transparent calc(25% - 1px), var(--rule) 25%, transparent calc(25% + 1px),
                    transparent calc(50% - 1px), var(--rule) 50%, transparent calc(50% + 1px),
                    transparent calc(75% - 1px), var(--rule) 75%, transparent calc(75% + 1px));
}
.fill {
  position: absolute; top: 0; left: 0; bottom: 0; width: 0;
  background: repeating-linear-gradient(135deg, var(--measured), var(--measured) 7px, var(--measured-ink) 7px, var(--measured-ink) 8px);
  transition: width 1.1s var(--ease);
  border-right: 2px solid var(--measured-ink);
}
.track .headroom {
  position: absolute; top: 50%; transform: translateY(-50%);
  font-family: var(--mono); font-size: 10.5px; color: var(--graphite); letter-spacing: .03em;
  pointer-events: none; right: 10px;
}
.track .ceiling {
  position: absolute; top: -3px; bottom: -3px; right: 0; width: 0;
  border-right: 2px dashed var(--red);
}
.gauge-foot { display: flex; justify-content: space-between; gap: 12px; margin-top: 6px;
  font-family: var(--mono); font-size: 11.5px; color: var(--graphite); }
.gauge-foot .meas { color: var(--measured-ink); }
.gauge-foot .sol { color: var(--red-ink); }
.gauge-foot b { font-weight: 600; }

.roofline-note { font-size: 12.5px; color: var(--graphite); font-family: var(--mono); }
.roofline-note a { color: var(--graphite); text-decoration: underline; }

/* ---------------------------------------------------------------- command block */
.cmd { position: relative; background: var(--paper-sunk); border: 1px solid var(--rule-2); border-radius: var(--radius); }
.cmd-bar { display: flex; align-items: center; justify-content: space-between; gap: 8px;
  padding: 7px 10px 7px 12px; border-bottom: 1px solid var(--rule-2); }
.cmd-bar .tag { font-family: var(--mono); font-size: 11px; color: var(--graphite); letter-spacing: .04em; }
.cmd-tabs { display: flex; gap: 4px; }
.cmd-tab { font-family: var(--mono); font-size: 11px; color: var(--graphite); background: transparent;
  border: 1px solid transparent; border-radius: 3px; padding: 2px 8px; cursor: pointer; }
.cmd-tab[aria-selected="true"] { color: var(--ink); background: #fff; border-color: var(--rule-2); }
.copy-btn {
  font-family: var(--mono); font-size: 11px; color: var(--ink-2); background: #fff;
  border: 1px solid var(--rule-2); border-radius: 3px; padding: 3px 9px; cursor: pointer; transition: all .14s var(--ease);
}
.copy-btn:hover { border-color: var(--graphite); }
.copy-btn.copied { color: var(--measured-ink); border-color: #bcdadd; background: var(--measured-wash); }
.cmd pre { margin: 0; padding: 14px 14px; overflow-x: auto; font-size: 12.5px; line-height: 1.7; color: var(--ink); }
.cmd pre .tok-cmt { color: var(--graphite); }
.cmd pre .tok-flag { color: var(--measured-ink); }
.cmd pre .tok-cont { color: var(--graphite-2); }
.cmd pre .tok-prog { color: var(--red-ink); }

/* argument reference table */
.argtable { width: 100%; border-collapse: collapse; margin-top: 14px; }
.argtable th, .argtable td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--rule); vertical-align: top; }
.argtable thead th { font-family: var(--mono); font-size: 10px; letter-spacing: .07em; text-transform: uppercase; color: var(--graphite); border-bottom: 1px solid var(--rule-2); }
.argtable td.flag { font-family: var(--mono); font-size: 12px; color: var(--measured-ink); white-space: nowrap; }
.argtable td.val { font-family: var(--mono); font-size: 12px; color: var(--ink); white-space: nowrap; }
.argtable td.why { color: var(--ink-2); font-size: 13.5px; }
.argtable tr:last-child td { border-bottom: 0; }

/* AITER atom panel */
.aiter { background: var(--paper-rail); border: 1px solid var(--rule); border-left: 3px solid var(--red); border-radius: var(--radius); padding: 14px 16px; }
.aiter .atop { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.aiter .atop .lbl { font-family: var(--disp); font-weight: 600; font-size: .98rem; }
.aiter .atop .state { font-family: var(--mono); font-size: 11px; padding: 2px 7px; border-radius: 3px; }
.aiter .atop .state.on { color: var(--measured-ink); background: var(--measured-wash); border: 1px solid #bcdadd; }
.aiter .atop .state.off { color: var(--graphite); background: var(--paper-sunk); border: 1px solid var(--rule-2); }
.aiter .atop .commit { font-family: var(--mono); font-size: 11px; color: var(--graphite); margin-left: auto; }
.aiter .asum { color: var(--ink-2); font-size: 13.5px; margin-bottom: 12px; }
.aiter .arows { display: grid; gap: 8px; }
.aiter .arow { display: grid; grid-template-columns: 130px 1fr; gap: 12px; align-items: baseline; }
@media (max-width: 560px) { .aiter .arow { grid-template-columns: 1fr; gap: 2px; } }
.aiter .arow .ak { font-family: var(--mono); font-size: 10px; letter-spacing: .06em; text-transform: uppercase; color: var(--graphite); }
.aiter .pill { display: inline-block; font-family: var(--mono); font-size: 11.5px; color: var(--ink);
  background: #fff; border: 1px solid var(--rule-2); border-radius: 3px; padding: 2px 8px; margin: 0 6px 6px 0; }

/* env table */
.envtable { width: 100%; border-collapse: collapse; }
.envtable th, .envtable td { text-align: left; padding: 8px 12px; border-bottom: 1px solid var(--rule); vertical-align: top; }
.envtable thead th { font-family: var(--mono); font-size: 10px; letter-spacing: .07em; text-transform: uppercase; color: var(--graphite); border-bottom: 1px solid var(--rule-2); }
.envtable td.kv { font-family: var(--mono); font-size: 12px; white-space: nowrap; }
.envtable td.kv .ek { color: var(--ink); } .envtable td.kv .ev { color: var(--measured-ink); }
.envtable td.why { color: var(--ink-2); font-size: 13.5px; }

/* data tables (benchmarks, vs-nvidia) */
.dtable-scroll { overflow-x: auto; }
.dtable { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.dtable th, .dtable td { padding: 8px 12px; border-bottom: 1px solid var(--rule); text-align: right; white-space: nowrap; }
.dtable th:first-child, .dtable td:first-child { text-align: left; }
.dtable thead th { font-family: var(--mono); font-size: 10px; letter-spacing: .06em; text-transform: uppercase; color: var(--graphite); border-bottom: 1px solid var(--rule-2); }
.dtable tbody td { font-family: var(--mono); font-size: 12.5px; color: var(--ink); }
.dtable tbody tr:nth-child(even) td { background: rgba(21,24,30,.018); }
.dtable .hl { color: var(--measured-ink); font-weight: 600; }
.dtable .nv td { color: var(--graphite); }
.dtable caption { caption-side: bottom; text-align: left; font-family: var(--mono); font-size: 11px; color: var(--graphite); padding-top: 8px; }

/* at-a-glance comparison — one row per verified cell, click to open the recipe */
.cmp tbody tr { cursor: pointer; }
.cmp tbody tr:hover td { background: var(--warn-wash); }
.cmp tbody tr:focus-visible { outline: 2px solid var(--red); outline-offset: -2px; }
.cmp tbody td small { color: var(--graphite-2); font-size: 10.5px; }
.cmp .cmp-model { font-family: var(--disp); font-weight: 600; font-size: 13.5px; }
.cmp .cmp-strat { font-family: var(--mono); font-size: 10.5px; letter-spacing: .04em;
  border: 1px solid var(--rule-2); border-radius: 3px; padding: 2px 7px; color: var(--ink-2); }

/* accuracy chips */
.acc { display: flex; flex-wrap: wrap; gap: 10px; }
.acc .accitem { border: 1px solid var(--rule); border-radius: var(--radius); padding: 10px 14px; background: var(--paper-card); min-width: 150px; }
.acc .accitem .an { font-family: var(--mono); font-size: 10px; letter-spacing: .06em; text-transform: uppercase; color: var(--graphite); }
.acc .accitem .av { font-family: var(--disp); font-weight: 700; font-size: 1.3rem; color: var(--measured-ink); }
.acc .accitem .ar { font-family: var(--mono); font-size: 11px; color: var(--graphite); }
/* the run notes are sentences, not fields — mono at 11px turns them into a smear */
.acc .accitem .anote { font-size: 12.5px; line-height: 1.55; color: var(--ink-2); margin-top: 5px; max-width: 96ch; }

/* gotchas */
.gotchas { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.gotchas li { position: relative; padding: 8px 12px 8px 30px; background: var(--warn-wash); border: 1px solid #ecdcbb; border-radius: var(--radius); font-size: 13.5px; color: var(--ink-2); }
.gotchas li::before { content: "!"; position: absolute; left: 12px; top: 8px; font-family: var(--mono); font-weight: 700; color: var(--warn-ink); }

/* provenance footnote */
.prov { margin-top: 8px; border-top: 1px dashed var(--rule-2); padding-top: 12px; }
.prov .pe { font-family: var(--mono); font-size: 11px; letter-spacing: .06em; text-transform: uppercase; color: var(--graphite); margin-bottom: 6px; }
.prov dl { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 4px 18px; margin: 0; }
.prov .row { display: flex; gap: 8px; font-family: var(--mono); font-size: 11.5px; }
.prov .row dt { color: var(--graphite); flex: none; }
.prov .row dd { color: var(--ink-2); margin: 0; word-break: break-all; }

/* not-benchmarked empty state */
.empty { text-align: center; padding: 40px 22px; }
.empty .big { font-family: var(--disp); font-weight: 600; font-size: 1.2rem; color: var(--ink); }
.empty .sub { color: var(--graphite); margin-top: 6px; font-size: 14px; }
.empty .near { margin-top: 16px; font-family: var(--mono); font-size: 12px; color: var(--ink-2); }
.empty .cta { display: inline-block; margin-top: 18px; font-family: var(--mono); font-size: 12px;
  border: 1px solid var(--rule-2); border-radius: 3px; padding: 7px 14px; color: var(--ink); background: var(--paper-card); }
.empty .cta:hover { border-color: var(--graphite); text-decoration: none; }

/* ---------------------------------------------------------------- prerequisites / steps */
.steps { display: grid; gap: 14px; counter-reset: step; }
.step { display: grid; grid-template-columns: 36px 1fr; gap: 16px; align-items: start; }
.step .num { counter-increment: step; font-family: var(--mono); font-weight: 600; color: var(--red); font-size: 13px; }
.step .num::before { content: counter(step, decimal-leading-zero); }
.step .st-body { background: var(--paper-card); border: 1px solid var(--rule); border-radius: var(--radius); padding: 14px 16px; box-shadow: var(--shadow-card); }
.step h3 { font-size: 1rem; margin-bottom: 6px; }
.step p { margin: 0 0 10px; color: var(--ink-2); font-size: 14px; }

/* references */
.refs { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 18px; }
@media (max-width: 760px) { .refs { grid-template-columns: 1fr; } }
.refcol h3 { font-size: .98rem; margin-bottom: 10px; }
.refcol ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 7px; }
.refcol li { font-size: 13.5px; }
.refcol .arrow { color: var(--graphite-2); }

/* ---------------------------------------------------------------- roadmap / what's missing */
.roadmap-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 820px) { .roadmap-grid { grid-template-columns: 1fr; } }
.rm-card { background: var(--paper-card); border: 1px solid var(--rule); border-radius: 6px; padding: 16px 18px; box-shadow: var(--shadow-card); }
.rm-head { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; border-bottom: 1px solid var(--rule); padding-bottom: 10px; margin-bottom: 12px; }
.rm-name { font-family: var(--disp); font-weight: 600; font-size: 1.05rem; }
.rm-count { font-family: var(--mono); font-size: 11px; color: var(--red-ink); background: var(--red-wash); border: 1px solid var(--red-line); padding: 2px 9px; border-radius: 999px; white-space: nowrap; }
.gap { padding: 13px 0; border-top: 1px dashed var(--rule); }
.gap:first-of-type { border-top: 0; padding-top: 2px; }
.gap-h { display: flex; align-items: center; gap: 9px; margin-bottom: 5px; }
.gap-kind { font-family: var(--mono); font-size: 9.5px; letter-spacing: .06em; text-transform: uppercase; padding: 2px 6px; border-radius: 3px; background: var(--paper-sunk); color: var(--graphite); border: 1px solid var(--rule); white-space: nowrap; }
.gap-kind.dependency, .gap-kind.perf { color: var(--red-ink); background: var(--red-wash); border-color: var(--red-line); }
.gap-kind.metric { color: var(--measured-ink); background: var(--measured-wash); border-color: #bcdadd; }
.gap-t { font-family: var(--disp); font-weight: 600; font-size: .96rem; }
.gap-note { color: var(--ink-2); font-size: 13px; margin: 0 0 10px; }
.gap .cmd pre { font-size: 11.5px; line-height: 1.6; }
.gap-dep { font-family: var(--mono); font-size: 12px; color: var(--graphite); margin: 0; }

/* footer / methodology */
.foot { padding: 40px 0 60px; border-top: 1px solid var(--rule-2); color: var(--graphite); }
.foot .method { background: var(--paper-card); border: 1px solid var(--rule); border-radius: var(--radius); padding: 16px 18px; margin-bottom: 24px; }
.foot .method h3 { font-size: .98rem; margin-bottom: 8px; }
.foot .method p { font-size: 13px; color: var(--ink-2); margin: 0 0 8px; max-width: 80ch; }
.foot .method code { background: var(--paper-sunk); padding: 1px 5px; border-radius: 3px; font-size: 12px; }
.foot .legal { display: flex; flex-wrap: wrap; gap: 6px 18px; font-family: var(--mono); font-size: 12px; }

/* accessibility: focus */
:focus-visible { outline: 2px solid var(--measured); outline-offset: 2px; border-radius: 2px; }
.skip { position: absolute; left: -9999px; top: 0; background: var(--ink); color: #fff; padding: 10px 14px; z-index: 100; }
.skip:focus { left: 12px; top: 8px; }

/* reduced motion */
@media (prefers-reduced-motion: reduce) {
  .fill { transition: none; }
  * { scroll-behavior: auto !important; }
}