/* ==========================================================================
   tweet-response — design system
   Dark-first, light-complete. No external fonts, no frameworks.
   ========================================================================== */

:root {
  --sadness:  #4c7dff;
  --joy:      #ffb020;
  --love:     #ff5c8a;
  --anger:    #ff5f3d;
  --fear:     #a06bff;
  --surprise: #14c8a6;

  --bg:        #06080c;
  --bg-alt:    #080b11;
  --panel:     #0c1017;
  --panel-2:   #10151e;
  --line:      rgba(255, 255, 255, .075);
  --line-2:    rgba(255, 255, 255, .14);
  --ink:       #e8edf5;
  --ink-2:     #aab6c8;
  --ink-3:     #6f7b8d;
  --accent:    #14c8a6;
  --accent-2:  #5b8cff;
  --glow:      rgba(20, 200, 166, .16);
  --shadow:    0 1px 2px rgba(0,0,0,.5), 0 18px 40px -24px rgba(0,0,0,.9);

  --r:   14px;
  --r-s: 9px;
  --sp:  clamp(1rem, .6rem + 1.4vw, 1.6rem);

  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Inter, Roboto,
          "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", "Cascadia Mono",
          Menlo, Consolas, monospace;
}

:root[data-theme="light"] {
  --sadness:  #2f5fe0;
  --joy:      #b97300;
  --love:     #d93a6b;
  --anger:    #d8401f;
  --fear:     #7a45d8;
  --surprise: #058874;

  --bg:      #f6f7f9;
  --bg-alt:  #eef0f4;
  --panel:   #ffffff;
  --panel-2: #f4f6f9;
  --line:    rgba(12, 22, 40, .10);
  --line-2:  rgba(12, 22, 40, .20);
  --ink:     #0d1420;
  --ink-2:   #47536a;
  --ink-3:   #78859a;
  --accent:  #08876f;
  --accent-2:#2f5fe0;
  --glow:    rgba(8, 135, 111, .12);
  --shadow:  0 1px 2px rgba(12,22,40,.06), 0 16px 34px -26px rgba(12,22,40,.5);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 84px; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

a { color: inherit; text-decoration-color: var(--line-2); text-underline-offset: 3px; }
a:hover { text-decoration-color: var(--accent); }
h1, h2, h3, h4 { margin: 0; line-height: 1.12; letter-spacing: -.022em; font-weight: 640; }
p { margin: 0; }
b, strong { font-weight: 640; }
.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.tiny { font-size: .72rem; letter-spacing: .02em; }
.sr, .skip:not(:focus) {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip:focus {
  position: fixed; top: 10px; left: 10px; z-index: 200; background: var(--accent);
  color: #04150f; padding: .55rem .9rem; border-radius: var(--r-s); font-weight: 600;
}
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

.wrap { width: min(1180px, 100% - 2 * var(--sp)); margin-inline: auto; }

/* film grain / vignette --------------------------------------------------- */
.grain {
  position: fixed; inset: 0; pointer-events: none; z-index: 1; opacity: .5;
  background:
    radial-gradient(120% 80% at 50% -10%, transparent 40%, rgba(0,0,0,.35) 100%);
}
:root[data-theme="light"] .grain { opacity: .35;
  background: radial-gradient(120% 80% at 50% -10%, transparent 45%, rgba(12,22,40,.07) 100%); }

/* ── top bar ─────────────────────────────────────────────────────────────── */
.topbar {
  position: sticky; top: 0; z-index: 100;
  backdrop-filter: saturate(1.6) blur(14px);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  border-bottom: 1px solid var(--line);
}
.topbar-in {
  width: min(1180px, 100% - 2 * var(--sp)); margin-inline: auto;
  display: flex; align-items: center; gap: 1rem; height: 58px;
}
.brand {
  display: inline-flex; align-items: center; gap: .5rem; font-weight: 650;
  letter-spacing: -.02em; text-decoration: none; color: var(--ink); flex: none;
}
.brand svg { color: var(--accent); }
.nav { display: flex; gap: .1rem; margin-inline: auto; overflow-x: auto; scrollbar-width: none; }
.nav::-webkit-scrollbar { display: none; }
.nav a {
  font-size: .82rem; color: var(--ink-3); text-decoration: none; padding: .35rem .6rem;
  border-radius: 999px; white-space: nowrap; transition: color .18s, background .18s;
}
.nav a:hover { color: var(--ink); background: var(--panel-2); }
.nav a.active { color: var(--ink); background: var(--panel-2); box-shadow: inset 0 0 0 1px var(--line); }
.topbar-actions { display: flex; align-items: center; gap: .5rem; flex: none; }
.icon-btn, .ghost-btn, .mini-btn {
  display: inline-flex; align-items: center; gap: .4rem; cursor: pointer;
  border: 1px solid var(--line); background: var(--panel); color: var(--ink-2);
  border-radius: 999px; font: inherit; font-size: .8rem; transition: .18s;
}
.icon-btn { width: 34px; height: 34px; justify-content: center; padding: 0; }
.ghost-btn { padding: .38rem .8rem; text-decoration: none; }
.mini-btn { padding: .15rem .55rem; font-size: .7rem; font-family: var(--mono); }
.icon-btn:hover, .ghost-btn:hover, .mini-btn:hover { color: var(--ink); border-color: var(--line-2); background: var(--panel-2); }
:root[data-theme="dark"] .sun, :root[data-theme="light"] .moon { display: none; }
.scroll-rail { height: 1px; background: transparent; }
#scrollbar { display: block; height: 2px; width: 0; margin-top: -1px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2)); }

@media (max-width: 900px) { .nav { display: none; } }

/* ── hero ────────────────────────────────────────────────────────────────── */
.hero { position: relative; padding: clamp(3.5rem, 9vh, 7rem) 0 clamp(3rem, 7vh, 5rem); overflow: hidden; }
.hero-glow {
  position: absolute; inset: -30% -10% auto -10%; height: 120%;
  background:
    radial-gradient(45% 55% at 22% 18%, var(--glow), transparent 70%),
    radial-gradient(40% 50% at 78% 8%, color-mix(in srgb, var(--accent-2) 16%, transparent), transparent 70%);
  filter: blur(10px); pointer-events: none;
}
.hero-in { position: relative; z-index: 2; }
.eyelash {
  font-family: var(--mono); font-size: .72rem; letter-spacing: .16em; text-transform: uppercase;
  color: var(--ink-3); margin-bottom: 1.1rem;
}
h1 { font-size: clamp(2.4rem, 1.2rem + 5.4vw, 5rem); letter-spacing: -.04em; font-weight: 680; }
.grad {
  background: linear-gradient(96deg, var(--accent), var(--accent-2) 70%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lede { max-width: 62ch; margin-top: 1.4rem; color: var(--ink-2); font-size: 1.03rem; }
.lede b { color: var(--ink); font-family: var(--mono); }
.chips { display: flex; flex-wrap: wrap; gap: .6rem; margin-top: 2rem; }
.chip {
  border: 1px solid var(--line); background: var(--panel); border-radius: var(--r-s);
  padding: .6rem .9rem; min-width: 128px; box-shadow: var(--shadow);
}
.chip b {
  display: block; font-family: var(--mono); font-size: 1.28rem; font-weight: 600;
  letter-spacing: -.02em; font-variant-numeric: tabular-nums;
}
.chip span { font-size: .7rem; color: var(--ink-3); letter-spacing: .04em; }
.hero-cta { display: flex; gap: .6rem; flex-wrap: wrap; margin-top: 2rem; }
.btn {
  display: inline-flex; align-items: center; padding: .62rem 1.15rem; border-radius: 999px;
  border: 1px solid var(--line-2); text-decoration: none; font-size: .9rem; font-weight: 550;
  color: var(--ink); transition: .18s;
}
.btn:hover { background: var(--panel-2); }
.btn.primary {
  background: var(--accent); border-color: transparent; color: #03130f; font-weight: 620;
  box-shadow: 0 8px 26px -12px var(--accent);
}
.btn.primary:hover { filter: brightness(1.08); }
:root[data-theme="light"] .btn.primary { color: #fff; }

/* ── sections & panels ───────────────────────────────────────────────────── */
.band { padding: clamp(3rem, 6vh, 5.2rem) 0; position: relative; z-index: 2; }
.band.alt { background: var(--bg-alt); border-block: 1px solid var(--line); }
.sec-head { display: flex; gap: 1rem; margin-bottom: 1.8rem; align-items: flex-start; }
.sec-idx {
  font-family: var(--mono); font-size: .74rem; color: var(--accent); padding-top: .45rem;
  letter-spacing: .1em; flex: none;
}
.sec-head h2 { font-size: clamp(1.5rem, 1.1rem + 1.4vw, 2.15rem); }
.sec-head p { color: var(--ink-2); max-width: 68ch; margin-top: .55rem; font-size: .95rem; }

.panel {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--r);
  padding: 1.05rem 1.15rem 1.15rem; box-shadow: var(--shadow); min-width: 0;
}
.panel-head {
  display: flex; align-items: center; gap: .55rem; margin-bottom: .9rem;
  padding-bottom: .65rem; border-bottom: 1px solid var(--line);
}
.panel-head.mt { margin-top: 1.4rem; }
.panel-head .label {
  font-size: .74rem; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3);
  font-weight: 600;
}
.panel-head .spacer { flex: 1; }
.panel-head .mono { color: var(--ink-3); }
.foot { margin-top: .85rem; font-size: .8rem; color: var(--ink-3); line-height: 1.55; }
.note { margin-top: 1.4rem; padding-top: 1.1rem; border-top: 1px dashed var(--line); }
.note h4 { font-size: .85rem; margin: 1.1rem 0 .35rem; }
.note p { font-size: .82rem; color: var(--ink-2); }
.note h4:first-child { margin-top: 0; }

.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; margin-bottom: 1rem; }
.grid-2 + .grid-2, .grid-2 + .panel, .grid-3 + .panel { margin-top: 1rem; }
@media (max-width: 940px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } }

.legend { display: inline-flex; align-items: center; gap: .35rem; font-size: .72rem; color: var(--ink-3); }
.legend i { width: 14px; height: 3px; border-radius: 2px; display: inline-block; }
.legend i + * { margin-right: .5rem; }
.sw-train { background: var(--ink-3); }
.sw-val { background: var(--accent); }

/* ── demo ────────────────────────────────────────────────────────────────── */
.demo-grid {
  display: grid; grid-template-columns: 1.25fr 1fr; gap: 1rem;
}
.demo-grid .span2 { grid-column: 1 / -1; }
@media (max-width: 940px) { .demo-grid { grid-template-columns: 1fr; } }

.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--ink-3); flex: none; }
.dot[data-state="loading"] { background: var(--joy); animation: pulse 1.1s ease-in-out infinite; }
.dot[data-state="ready"] { background: var(--accent); box-shadow: 0 0 0 4px var(--glow); }
.dot[data-state="error"] { background: var(--anger); }
@keyframes pulse { 0%, 100% { opacity: .35; } 50% { opacity: 1; } }
#modelStateText { font-size: .74rem; letter-spacing: .06em; text-transform: uppercase; color: var(--ink-3); font-weight: 600; }

textarea, .text-input {
  width: 100%; background: var(--panel-2); color: var(--ink); border: 1px solid var(--line);
  border-radius: var(--r-s); padding: .8rem .9rem; font: inherit; font-size: 1rem;
  line-height: 1.5; resize: vertical; transition: border-color .18s, box-shadow .18s;
}
textarea:focus, .text-input:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--glow);
}
.text-input { font-family: var(--mono); font-size: .9rem; }
.examples { display: flex; flex-wrap: wrap; gap: .35rem; margin-top: .7rem; }
.ex {
  font-size: .74rem; color: var(--ink-2); background: var(--panel-2); border: 1px solid var(--line);
  border-radius: 999px; padding: .25rem .65rem; cursor: pointer; transition: .16s;
  max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.ex:hover { color: var(--ink); border-color: var(--line-2); }
.hint { margin-top: .6rem; font-size: .75rem; color: var(--ink-3); font-family: var(--mono); }

.bars { display: grid; gap: .5rem; }
.bar-row { display: grid; grid-template-columns: 68px 1fr 52px; align-items: center; gap: .6rem; }
.bar-row .name { font-size: .78rem; color: var(--ink-2); text-transform: capitalize; }
.bar-track { display: block; height: 9px; border-radius: 999px; background: var(--panel-2);
  overflow: hidden; box-shadow: inset 0 0 0 1px var(--line); }
.bar-fill { display: block; height: 100%; border-radius: 999px; width: 0; }
/* Animation is opted into after the first paint, so the initial render is
   correct even where transitions never run (print, prerender, headless). */
.bars.animate .bar-fill { transition: width .32s cubic-bezier(.22,.9,.3,1); }
.bar-row .val { font-family: var(--mono); font-size: .78rem; text-align: right; color: var(--ink-2);
  font-variant-numeric: tabular-nums; }
.bar-row.top .name, .bar-row.top .val { color: var(--ink); font-weight: 620; }

.tokens { display: flex; flex-wrap: wrap; gap: .35rem; min-height: 44px; align-items: flex-start; }
.tok {
  position: relative; padding: .3rem .55rem; border-radius: 7px; font-family: var(--mono);
  font-size: .84rem; border: 1px solid var(--line); background: var(--panel-2);
  cursor: default; transition: transform .15s;
}
.tok:hover { transform: translateY(-1px); }
.tok.oov { border-style: dashed; color: var(--ink-3); }
.tok .d {
  display: block; font-size: .6rem; text-align: center; opacity: .75; letter-spacing: .02em;
}

/* ── charts (SVG) ────────────────────────────────────────────────────────── */
.chart { width: 100%; height: 168px; }
.chart.tall { height: 208px; }
.chart svg { display: block; width: 100%; height: 100%; overflow: visible; }
.ax-line { stroke: var(--line); stroke-width: 1; }
.ax-txt { fill: var(--ink-3); font-family: var(--mono); font-size: 9.5px; }
.grid-line { stroke: var(--line); stroke-width: 1; stroke-dasharray: 2 4; }
.series { fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.marker { fill: var(--panel); stroke-width: 2; }
.hoverline { stroke: var(--line-2); stroke-width: 1; }
.chart-tip {
  position: absolute; pointer-events: none; background: var(--panel-2); color: var(--ink);
  border: 1px solid var(--line-2); border-radius: 8px; padding: .4rem .6rem; font-size: .74rem;
  font-family: var(--mono); box-shadow: var(--shadow); z-index: 20; white-space: nowrap;
  transform: translate(-50%, -120%); opacity: 0; transition: opacity .12s;
}
.chart-wrap { position: relative; }

.kv { display: grid; gap: .5rem; }
.kv-row { display: flex; align-items: baseline; gap: .6rem; font-size: .84rem; }
.kv-row .k { color: var(--ink-3); }
.kv-row .rule { flex: 1; border-bottom: 1px dotted var(--line-2); transform: translateY(-3px); }
.kv-row .v { font-family: var(--mono); font-variant-numeric: tabular-nums; }

.budget { display: grid; gap: .55rem; }
.budget-row { display: grid; grid-template-columns: 1fr auto; gap: .3rem .6rem; font-size: .8rem; }
.budget-row .lab { color: var(--ink-2); }
.budget-row .num { font-family: var(--mono); color: var(--ink); font-variant-numeric: tabular-nums; }
.budget-row .track { display: block; grid-column: 1 / -1; height: 6px; border-radius: 999px;
  background: var(--panel-2); box-shadow: inset 0 0 0 1px var(--line); overflow: hidden; }
.budget-row .fill { display: block; height: 100%; border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2)); }

/* ── architecture ────────────────────────────────────────────────────────── */
.arch-grid { display: grid; grid-template-columns: 1.15fr 1fr; gap: 1rem; }
@media (max-width: 940px) { .arch-grid { grid-template-columns: 1fr; } }
.arch-diagram { display: flex; flex-direction: column; justify-content: center; }
.arch-layer {
  display: grid; grid-template-columns: 1fr auto; align-items: center; gap: .2rem 1rem;
  padding: .8rem .95rem; border: 1px solid var(--line); border-radius: var(--r-s);
  background: var(--panel-2); transition: .2s; cursor: default;
}
.arch-layer:hover { border-color: var(--accent); box-shadow: 0 0 0 3px var(--glow); }
.arch-layer .lname { font-weight: 600; font-size: .92rem; }
.arch-layer .lshape { font-family: var(--mono); font-size: .78rem; color: var(--accent); }
.arch-layer .ldetail { font-size: .76rem; color: var(--ink-3); grid-column: 1; }
.arch-layer .lparams { font-family: var(--mono); font-size: .72rem; color: var(--ink-3); }
.arch-arrow { display: flex; justify-content: center; color: var(--line-2); padding: .18rem 0; }

/* ── log-odds ────────────────────────────────────────────────────────────── */
.logodds { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: .8rem; }
@media (max-width: 940px) { .logodds { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.lo-col h4 { font-size: .78rem; text-transform: capitalize; margin-bottom: .5rem;
  display: flex; align-items: center; gap: .35rem; }
.lo-col h4 i { width: 8px; height: 8px; border-radius: 2px; }
.lo-item { display: grid; grid-template-columns: 1fr auto; gap: .3rem; font-size: .76rem;
  padding: .14rem 0; align-items: center; }
.lo-item .w { font-family: var(--mono); overflow: hidden; text-overflow: ellipsis; }
.lo-item .z { color: var(--ink-3); font-family: var(--mono); font-size: .68rem; }
.lo-item .meter { grid-column: 1 / -1; height: 2px; border-radius: 2px; opacity: .55; }

/* ── confusion matrix ────────────────────────────────────────────────────── */
.confusion { overflow-x: auto; }
.confusion table { border-collapse: separate; border-spacing: 3px; margin-inline: auto; }
.confusion th { font-size: .68rem; font-weight: 600; color: var(--ink-3); text-transform: capitalize;
  font-family: var(--mono); padding: 2px 4px; }
.confusion th.rowh { text-align: right; }
.confusion td {
  width: 52px; height: 40px; border-radius: 6px; text-align: center; cursor: pointer;
  font-family: var(--mono); font-size: .76rem; font-variant-numeric: tabular-nums;
  transition: transform .14s, box-shadow .14s; position: relative;
}
.confusion td:hover { transform: scale(1.06); z-index: 2; }
.confusion td.sel { box-shadow: 0 0 0 2px var(--accent); }
.confusion td .pct { display: block; font-size: .55rem; opacity: .7; }
.cm-detail { margin-top: .9rem; font-size: .8rem; color: var(--ink-2); min-height: 60px;
  border-top: 1px dashed var(--line); padding-top: .8rem; }
.cm-detail .ex-line { font-family: var(--mono); font-size: .74rem; color: var(--ink-2);
  padding: .25rem 0; border-left: 2px solid var(--line-2); padding-left: .6rem; margin: .3rem 0; }

.perclass { display: grid; gap: .55rem; }
.pc-row { display: grid; grid-template-columns: 74px 1fr; gap: .3rem .6rem; align-items: center; }
.pc-row .pc-name { font-size: .8rem; text-transform: capitalize; display: flex; align-items: center; gap: .35rem; }
.pc-row .pc-name i { width: 7px; height: 7px; border-radius: 2px; flex: none; }
.pc-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: .45rem; }
.pc-metric { font-size: .68rem; color: var(--ink-3); font-family: var(--mono); }
.pc-metric b { display: block; color: var(--ink); font-size: .82rem; font-weight: 600; }
.pc-metric .mtrack { display: block; height: 3px; border-radius: 2px; background: var(--panel-2);
  margin-top: 3px; box-shadow: inset 0 0 0 1px var(--line); overflow: hidden; }
.pc-metric .mfill { display: block; height: 100%; }
.pc-head { display: grid; grid-template-columns: 74px 1fr; gap: .6rem; font-size: .66rem;
  color: var(--ink-3); font-family: var(--mono); text-transform: uppercase; letter-spacing: .08em; }
.pc-head .pc-metrics span { text-align: left; }

/* ── errors ──────────────────────────────────────────────────────────────── */
.pairs { display: grid; gap: .7rem; }
.pair {
  border: 1px solid var(--line); border-radius: var(--r-s); padding: .7rem .8rem;
  background: var(--panel-2);
}
.pair-head { display: flex; align-items: center; gap: .5rem; font-size: .82rem; margin-bottom: .45rem; }
.pair-head .tag { font-family: var(--mono); font-size: .72rem; padding: .1rem .45rem; border-radius: 5px; }
.pair-head .cnt { margin-left: auto; font-family: var(--mono); font-size: .72rem; color: var(--ink-3); }
.pair-ex { font-size: .76rem; color: var(--ink-3); font-family: var(--mono); line-height: 1.5;
  padding-left: .6rem; border-left: 2px solid var(--line-2); }
.cases { display: grid; gap: .5rem; }
.case {
  border: 1px solid var(--line); border-radius: var(--r-s); padding: .6rem .75rem; cursor: pointer;
  background: var(--panel-2); transition: .16s; text-align: left; font: inherit; color: inherit;
  width: 100%;
}
.case:hover { border-color: var(--line-2); transform: translateX(2px); }
.case .txt { font-size: .8rem; color: var(--ink-2); }
.case .meta { display: flex; gap: .5rem; margin-top: .35rem; font-family: var(--mono); font-size: .68rem;
  flex-wrap: wrap; align-items: center; }

/* ── embeddings ──────────────────────────────────────────────────────────── */
.grid-emb { display: grid; grid-template-columns: 1.5fr 1fr; gap: 1rem; }
@media (max-width: 940px) { .grid-emb { grid-template-columns: 1fr; } }
.pca { position: relative; width: 100%; aspect-ratio: 4 / 3; min-height: 300px; }
.pca canvas { width: 100%; height: 100%; display: block; border-radius: var(--r-s); cursor: crosshair; }
.pca-tip {
  position: absolute; pointer-events: none; background: var(--panel-2); border: 1px solid var(--line-2);
  border-radius: 7px; padding: .25rem .5rem; font-family: var(--mono); font-size: .72rem;
  box-shadow: var(--shadow); opacity: 0; transition: opacity .1s; transform: translate(-50%, -140%);
}
.pca-legend { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: .7rem; }
.pca-legend span { display: inline-flex; align-items: center; gap: .3rem; font-size: .72rem; color: var(--ink-3);
  text-transform: capitalize; }
.pca-legend .hint-inline { margin-left: auto; text-transform: none; font-family: var(--mono);
  font-size: .68rem; }
.pca-legend i { width: 8px; height: 8px; border-radius: 50%; }
.nn { display: grid; gap: .3rem; margin-top: .8rem; }
.nn-row { display: grid; grid-template-columns: 1fr 40px; gap: .5rem; align-items: center; font-size: .8rem; }
.nn-row .w { font-family: var(--mono); }
.nn-row .s { font-family: var(--mono); font-size: .7rem; color: var(--ink-3); text-align: right; }
.nn-row .track { display: block; grid-column: 1 / -1; height: 3px; border-radius: 2px;
  background: var(--panel-2); overflow: hidden; }
.nn-row .fill { display: block; height: 100%; background: var(--accent-2); }
.nn-empty { font-size: .8rem; color: var(--ink-3); margin-top: .8rem; }

/* ── misc ────────────────────────────────────────────────────────────────── */
.ledger { display: grid; gap: 0; }
.led-row { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.3fr; gap: .8rem;
  padding: .55rem 0; border-bottom: 1px solid var(--line); font-size: .82rem; align-items: center; }
.led-row:last-child { border-bottom: 0; }
.led-row.head { font-family: var(--mono); font-size: .68rem; text-transform: uppercase;
  letter-spacing: .08em; color: var(--ink-3); }
.led-row .num { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.led-row .delta { font-family: var(--mono); font-size: .74rem; }
.pos { color: var(--accent); } .neg { color: var(--anger); }
@media (max-width: 720px) { .led-row { grid-template-columns: 1fr 1fr; } .led-row .hide-s { display: none; } }

.slider-row { display: flex; align-items: center; gap: .8rem; margin-top: .7rem; }
input[type="range"] { flex: 1; accent-color: var(--accent); }
.parity { display: grid; gap: .45rem; }
.parity-row { display: grid; grid-template-columns: 1fr auto auto; gap: .6rem; font-size: .78rem;
  align-items: center; padding: .35rem 0; border-bottom: 1px solid var(--line); }
.parity-row:last-child { border-bottom: 0; }
.parity-row .t { color: var(--ink-2); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.parity-row .n { font-family: var(--mono); font-size: .72rem; color: var(--ink-3); }
.ok { color: var(--accent); font-family: var(--mono); font-size: .72rem; }

.code {
  background: var(--panel-2); border: 1px solid var(--line); border-radius: var(--r-s);
  padding: .9rem 1rem; overflow-x: auto; font-family: var(--mono); font-size: .78rem;
  line-height: 1.75; color: var(--ink-2); margin: 0;
}
.code .c { color: var(--ink-3); font-style: italic; }
.list { margin: 0; padding-left: 1.1rem; display: grid; gap: .45rem; font-size: .85rem; color: var(--ink-2); }
.list li::marker { color: var(--accent); }
.list.warn li::marker { color: var(--anger); }

.footer { border-top: 1px solid var(--line); padding: 2.2rem 0 3rem; background: var(--bg-alt);
  position: relative; z-index: 2; }
.footer-in { display: flex; justify-content: space-between; gap: 1.5rem; flex-wrap: wrap;
  font-size: .82rem; color: var(--ink-3); }
.footer-links { display: flex; flex-wrap: wrap; gap: 1.1rem; }
.footer-links a { text-decoration: none; }
.footer-links a:hover { color: var(--ink); }

/* reveal on scroll */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .6s ease, transform .6s cubic-bezier(.2,.7,.3,1); }
.reveal.in { opacity: 1; transform: none; }