*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--table);color:var(--ink);font:400 16px/1.55 var(--font-ui);-webkit-font-smoothing:antialiased;
  background-image:radial-gradient(1200px 700px at 50% 0,var(--table-glow),transparent 70%);background-repeat:no-repeat}
h1,h2,h3,p,ol,ul,dl,dd,figure,pre{margin:0;padding:0}
ol,ul{list-style:none}
a{color:inherit}
button,input{font:inherit;color:inherit}
.wrap{width:100%;max-width:var(--max);margin-inline:auto;padding-inline:var(--gutter)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.mono{font-family:var(--font-mono);font-size:.75rem;letter-spacing:.01em}
.dim{color:var(--ink-3)}
:focus-visible{outline:2px solid var(--focus);outline-offset:3px;border-radius:6px}
.skip{position:absolute;left:12px;top:-60px;background:var(--ink);color:var(--table);padding:10px 16px;border-radius:var(--r-pill);z-index:100}
.skip:focus{top:12px}

/* nav */
.nav{position:sticky;top:0;z-index:20;padding:12px 0;background:linear-gradient(var(--table) 70%,transparent)}
.nav-in{display:flex;align-items:center;gap:20px}
.brand{display:flex;align-items:center;gap:10px;font-weight:600;letter-spacing:-.01em;text-decoration:none;white-space:nowrap}
.brand-mark{width:18px;height:22px;background:var(--sheet);border:1.5px solid var(--ink);border-radius:2px;position:relative;box-shadow:2px 2px 0 var(--signal)}
.nav-links{display:none;gap:4px;margin-left:auto}
.nav-links a{padding:8px 12px;border-radius:var(--r-pill);font-size:.875rem;color:var(--ink-2);text-decoration:none;transition:background var(--dur-fast) var(--ease-out),color var(--dur-fast) var(--ease-out)}
.pill{display:inline-flex;align-items:center;gap:8px;border-radius:var(--r-pill);padding:9px 16px;font-size:.875rem;font-weight:500;text-decoration:none;white-space:nowrap}
.pill{transition:transform var(--dur-press) var(--ease-out)}
.pill:active{transform:scale(.97)}
.pill-back{margin-left:auto;background:var(--ink);color:var(--table)}
.pill-back span{display:inline-block;transition:transform var(--dur-fast) var(--ease-out)}
@media (min-width:980px){.nav-links{display:flex}.pill-back{margin-left:0}}

/* buttons / chips */
.btn{display:inline-flex;align-items:center;gap:12px;border:0;cursor:pointer;border-radius:var(--r-pill);padding:12px 12px 12px 22px;font-weight:500;font-size:.9375rem;text-decoration:none;white-space:nowrap;transition:transform var(--dur-press) var(--ease-out),background-color var(--dur-fast) var(--ease-out)}
.btn-ink{background:var(--ink);color:var(--table)}
.btn-dot{display:grid;place-items:center;width:30px;height:30px;border-radius:50%;background:rgb(127 127 127/.28);transition:transform var(--dur-ui) var(--ease-out)}
.btn:active{transform:scale(.97)}
.chip{display:inline-block;border-radius:var(--r-pill);padding:6px 14px;font-size:.8125rem}
.chip-note{background:var(--panel);border:1px solid var(--rule);color:var(--ink-2)}

/* hero */
.hero{padding-top:clamp(8px,2vw,20px);padding-bottom:clamp(18px,2vw,26px)}
.hero h1{font-weight:500;font-size:clamp(2.3rem,1.1rem + 4.2vw,4.6rem);line-height:1;letter-spacing:-.045em;margin-top:14px;max-width:16ch}
mark{background:linear-gradient(transparent 52%,var(--signal-wash) 52%,var(--signal-wash) 92%,transparent 92%);color:inherit;padding:0 .06em;box-shadow:inset 0 -3px 0 var(--signal)}
.lede{font-size:clamp(1rem,.9rem + .5vw,1.25rem);color:var(--ink-2);max-width:46ch;margin-top:18px}
.hero-cta{margin-top:22px}
@media (min-width:1000px){.hero{display:grid;grid-template-columns:minmax(0,1fr) auto;column-gap:40px;align-items:center}.hero .chip-note,.hero h1{grid-column:1/-1;justify-self:start}.hero h1{max-width:none;white-space:nowrap}.hero .lede{grid-column:1;margin:14px 0 0;max-width:56ch}.hero-cta{grid-column:2;margin:14px 0 0}}

/* console */
.console{background:var(--panel);border:1px solid var(--rule);border-radius:var(--r-panel);padding:clamp(14px,2vw,24px);box-shadow:0 30px 60px -40px rgb(20 23 28/.35)}
.ask-label{display:block;font-size:.8125rem;font-weight:500;color:var(--ink-2);margin-bottom:8px}
.ask-row{display:flex;gap:10px;flex-wrap:wrap}
.ask-row input{flex:1 1 280px;min-width:0;background:var(--sheet);color:#14171c;border:1px solid var(--rule);border-radius:var(--r-pill);padding:13px 20px;font-size:1rem}
.ask-row input::placeholder{color:#5b5f68}
.ask-row input:focus-visible{outline:2px solid var(--ink);outline-offset:2px}
.presets{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
.preset{border:1px solid var(--rule);background:transparent;border-radius:var(--r-pill);padding:7px 14px;font-size:.8125rem;cursor:pointer;color:var(--ink-2);transition:transform var(--dur-press) var(--ease-out),background-color var(--dur-fast) var(--ease-out),border-color var(--dur-fast) var(--ease-out),color var(--dur-fast) var(--ease-out)}
.preset:active{transform:scale(.97)}
.hint{font-size:.8125rem;color:var(--ink-3);margin-top:10px}

.steps{display:flex;gap:6px;margin:14px 0 12px;overflow-x:auto;padding-bottom:2px}
.steps li{flex:1 0 auto;display:flex;flex-direction:column;padding:5px 14px;border-radius:var(--r-pill);border:1px solid var(--rule);font-size:.8125rem;line-height:1.2;color:var(--ink-3);transition:background-color var(--dur-ui) var(--ease-out),color var(--dur-ui) var(--ease-out),border-color var(--dur-ui) var(--ease-out)}
.steps li em{font-style:normal;font-size:.75rem;opacity:.85}
.steps li.on{background:var(--ink);color:var(--table);border-color:var(--ink)}
.steps li.done{color:var(--ink);border-color:var(--ink)}
.steps li.on em,.steps li.done em{opacity:1}

.grid-demo{display:grid;gap:18px;grid-template-columns:1fr}
@media (min-width:1000px){.grid-demo{grid-template-columns:300px minmax(0,1fr) 330px;align-items:start}}
.col-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px;flex-wrap:wrap}
.col-head h3{font-size:.875rem;font-weight:600;letter-spacing:.01em}

.rank-list{display:grid;gap:6px;position:relative}
.rk{display:grid;grid-template-columns:44px 1fr;gap:12px;align-items:center;padding:6px;border-radius:10px;border:1px solid transparent;background:transparent;width:100%;text-align:left;cursor:pointer;transition:background-color var(--dur-fast) var(--ease-out),border-color var(--dur-fast) var(--ease-out),opacity var(--dur-ui) var(--ease-out)}
.rk[aria-current="true"]{background:var(--sheet);color:#14171c;border-color:var(--ink)}
.rk.pruned{opacity:.6}
.rk-th{width:44px;aspect-ratio:400/520;background:var(--sheet);border:1px solid var(--rule);border-radius:var(--r-paper);overflow:hidden;position:relative}
.rk-th svg{display:block;width:100%;height:100%}
.rk-th .rank-n{position:absolute;inset:auto auto 2px 2px;font:500 11px/1 var(--font-mono);background:var(--ink);color:var(--table);padding:2px 4px;border-radius:3px}
.rk-t{font-size:.8125rem;font-weight:500;line-height:1.25;margin-bottom:6px}
.rk-m{display:grid;gap:4px}
.mrow{display:grid;grid-template-columns:1fr 34px;align-items:center;gap:8px}
.mbar{width:100%;height:5px;border-radius:3px;transform:scaleX(0);transform-origin:left;transition:transform var(--dur-explain) var(--ease-out)}
.mbar.coarse{background:var(--ink-3);opacity:.55}
.mbar.final{background:var(--signal)}
.mnum{font:400 .75rem var(--font-mono);color:var(--ink-3);text-align:right}
.rk[aria-current="true"] .mnum{color:#454952}
.legend{margin-top:12px;font-size:.75rem;color:var(--ink-2);display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.key{width:14px;height:5px;border-radius:3px;display:inline-block}
.key-coarse{background:var(--ink-3);opacity:.55}.key-final{background:var(--signal);margin-left:6px}

.toggles{display:flex;gap:6px}
.tog{border:1px solid var(--rule);background:transparent;border-radius:var(--r-pill);padding:6px 12px;font-size:.75rem;cursor:pointer;color:var(--ink-2);transition:transform var(--dur-press) var(--ease-out),background-color var(--dur-fast) var(--ease-out),color var(--dur-fast) var(--ease-out)}
.tog:active{transform:scale(.97)}
.tog[aria-pressed="true"]{background:var(--ink);color:var(--table);border-color:var(--ink)}
.stage{background:var(--table);border-radius:12px;padding:clamp(12px,2vw,22px);display:grid;place-items:center;min-height:300px;background-image:linear-gradient(var(--rule) 1px,transparent 1px),linear-gradient(90deg,var(--rule) 1px,transparent 1px);background-size:24px 24px;background-position:-1px -1px;position:relative}
.stage::before{content:"";position:absolute;inset:0;background:radial-gradient(closest-side,transparent 40%,var(--table) 100%);opacity:.75;border-radius:inherit;pointer-events:none}
.sheet-wrap{position:relative;width:min(100%,360px)}
.sheet-svg{display:block;width:100%;height:auto;background:var(--sheet);border-radius:var(--r-paper);box-shadow:0 1px 0 rgb(0 0 0/.06),0 18px 34px -16px rgb(20 23 28/.45),0 2px 6px rgb(20 23 28/.12)}
#view-cap{margin-top:12px;text-align:center;position:relative}
.heat rect{fill:var(--signal);fill-opacity:0;transition:fill-opacity 320ms var(--ease-out)}
.heat.off{display:none}
.heat.lite{opacity:0;transition:opacity 320ms var(--ease-out)}.heat.lite.lit{opacity:1}.heat.lite rect{transition:none}
.bbox{fill:rgb(229 57 27/.10);fill-opacity:0;stroke:#e5391b;stroke-width:2;rx:2;opacity:0;stroke-dasharray:1;stroke-dashoffset:1}
.bbox.on{opacity:1;stroke-dashoffset:0;fill-opacity:1;transition:stroke-dashoffset 420ms var(--ease-out),fill-opacity 200ms var(--ease-out) 260ms}
.bbox-tag rect{fill:#bf2a0e}.bbox-tag text{fill:#fff;font:500 10px var(--font-mono)}
.bbox-tag{opacity:0}.bbox-tag.on{opacity:1;transition:opacity 160ms var(--ease-out) 300ms}
.hide-box .bbox,.hide-box .bbox-tag{display:none}

.ans-body{font-size:.9375rem;min-height:120px}
.ans-body .empty{color:var(--ink-3);font-size:.875rem}
.ans-body p.a{font-size:1.0625rem;line-height:1.5;letter-spacing:-.005em}
.cite{position:relative;display:inline-flex;align-items:center;border:1px solid var(--signal-ink);background:var(--signal-wash);color:color-mix(in srgb,var(--signal-ink) 78%,var(--ink));border-radius:var(--r-pill);padding:0 8px;margin:0 2px;font:500 .75rem/1.6 var(--font-mono);cursor:pointer;transition:transform var(--dur-press) var(--ease-out),background-color var(--dur-fast) var(--ease-out),color var(--dur-fast) var(--ease-out)}
.cite:focus-visible{background:var(--signal-ink);color:var(--on-signal)}
.cite:active{transform:scale(.97)}
.cite::after{content:"";position:absolute;inset:-12px -6px}
.caret{display:inline-block;width:2px;height:1em;background:var(--ink);vertical-align:-.15em;margin-left:2px;animation:blink 1s steps(2) infinite}
@keyframes blink{50%{opacity:0}}
.abstain{border:1px dashed var(--ink-3);border-radius:12px;padding:14px;font-size:.9375rem}
.abstain b{display:block;margin-bottom:4px}
.ans-meta{margin-top:14px;display:grid;gap:6px;font:400 .75rem var(--font-mono);color:var(--ink-2)}
.ans-meta div{display:flex;gap:10px;justify-content:space-between;flex-wrap:wrap}
.ans-meta dt{color:var(--ink-3)}

/* sections */
.sec{padding-top:clamp(72px,10vw,140px)}
.sec h2,.close h2{font-weight:500;font-size:clamp(1.9rem,1.1rem + 3vw,3.4rem);line-height:1.02;letter-spacing:-.04em;max-width:20ch}
.sec-sub{margin-top:14px;color:var(--ink-2);max-width:58ch;font-size:1.0625rem}

/* pipeline */
.pipe{margin-top:36px}
.pipe-tabs{display:grid;grid-template-columns:repeat(5,1fr);gap:0;position:relative}
.ptab{position:relative;text-align:left;border:0;background:linear-gradient(var(--rule),var(--rule)) left bottom 6px/100% 2px no-repeat;padding:0 12px 18px 0;cursor:pointer}
.ptab::before{content:"";position:absolute;left:0;right:0;bottom:6px;height:2px;background:var(--ink);transform:scaleX(0);transform-origin:left;transition:transform var(--dur-ui) var(--ease-in-out)}
.ptab::after{content:"";position:absolute;left:0;bottom:1px;width:12px;height:12px;border-radius:50%;background:var(--table);border:2px solid var(--ink);transition:background-color var(--dur-ui) var(--ease-out),transform var(--dur-ui) var(--ease-out)}
.ptab[aria-selected="true"]::after{background:var(--signal);transform:scale(1.25);border-color:var(--ink)}
.ptab[aria-selected="true"]::before{transform:scaleX(1)}
.ptab b{display:block;font-size:clamp(.9375rem,.7rem + 1vw,1.5rem);font-weight:500;letter-spacing:-.03em;color:var(--ink-3);transition:color var(--dur-fast) var(--ease-out)}
.ptab[aria-selected="true"] b{color:var(--ink)}
.ptab span{display:block;font:400 .75rem var(--font-mono);color:var(--ink-3);margin-top:2px}
.pipe-panel{margin-top:22px;background:var(--panel);border:1px solid var(--rule);border-radius:var(--r-panel);padding:clamp(18px,3vw,36px);display:grid;gap:28px;grid-template-columns:1fr;align-items:center}
@media (min-width:860px){.pipe-panel{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}}
.pp-text h3{font-size:1.5rem;font-weight:500;letter-spacing:-.03em;margin-bottom:10px}
.pp-text p{color:var(--ink-2);max-width:48ch}
.pp-text .io{margin-top:18px;display:grid;gap:6px;font:400 .8125rem var(--font-mono)}
.pp-text .io div{display:flex;gap:10px}.pp-text .io dt{color:var(--ink-3);min-width:3.2rem}
.pp-art{display:grid;place-items:center;min-height:260px;position:relative}
.art-stack{position:relative;width:200px;height:260px}
.art-stack svg{position:absolute;width:150px;height:auto;background:var(--sheet);box-shadow:0 14px 26px -14px rgb(20 23 28/.5);border-radius:2px}
.art-embed{width:min(100%,240px);position:relative}
.art-embed svg.sheet-svg{width:100%}
.art-tbl{width:100%;display:grid;gap:10px}
.art-row{border:1px solid var(--rule);border-radius:12px;padding:12px 14px;background:var(--sheet);color:#14171c;display:grid;gap:3px}
.art-row b{font-weight:500;font-size:.9375rem}.art-row span{font:400 .75rem var(--font-mono);color:#454952}
.art-row.sig{border-color:#bf2a0e;box-shadow:3px 3px 0 #e5391b}
.funnel{width:100%;display:grid;gap:8px}
.fn{height:46px;display:flex;align-items:center;justify-content:space-between;padding:0 16px;border-radius:10px;background:var(--ink);color:var(--table);font-size:.875rem}
.fn span{font:400 .75rem var(--font-mono);opacity:.9}
.fn.sig{background:var(--signal-ink);color:var(--on-signal)}
.code{font:400 .75rem/1.6 var(--font-mono);background:var(--sheet);color:#14171c;border:1px solid var(--rule);border-radius:12px;padding:14px 16px;overflow-x:auto;white-space:pre}

/* maxsim */
.ms{margin-top:36px;display:grid;gap:28px;grid-template-columns:1fr;align-items:start}
@media (min-width:900px){.ms{grid-template-columns:minmax(0,1fr) minmax(0,420px);gap:56px}}
.ms-ctrl{display:grid;gap:22px}
.ctrl-label{display:block;font-size:.8125rem;font-weight:500;color:var(--ink-2);margin-bottom:8px}
.seg{display:inline-flex;gap:4px;padding:4px;background:var(--panel);border:1px solid var(--rule);border-radius:var(--r-pill)}
.seg-wrap{flex-wrap:wrap;border-radius:22px}
.seg button{border:0;background:transparent;border-radius:var(--r-pill);padding:8px 16px;cursor:pointer;font-size:.875rem;color:var(--ink-2);transition:transform var(--dur-press) var(--ease-out),background-color var(--dur-fast) var(--ease-out),color var(--dur-fast) var(--ease-out)}
.seg button:active{transform:scale(.97)}
.seg button[aria-checked="true"]{background:var(--ink);color:var(--table)}
.seg button.tk{font-family:var(--font-mono);font-size:.8125rem}
.formula{padding:14px 18px;border:1px solid color-mix(in srgb,var(--signal) 38%,var(--rule));background:var(--panel);border-radius:12px;font-size:.875rem;line-height:1.8;overflow-x:auto}
.tally{display:grid;gap:10px}
.trow{display:grid;grid-template-columns:76px 1fr 44px;gap:12px;align-items:center;font:400 .8125rem var(--font-mono)}
.trow .bar{width:100%;height:10px;background:var(--ink-3);opacity:.5;border-radius:2px;transform-origin:left;animation:grow var(--dur-explain) var(--ease-out) backwards}
.trow:nth-child(2) .bar{animation-delay:50ms}.trow:nth-child(3) .bar{animation-delay:100ms}.trow:nth-child(4) .bar{animation-delay:150ms}
@keyframes grow{from{transform:scaleX(0)}}
.trow.sel .bar{background:var(--signal);opacity:1}
.trow.sel{color:var(--ink);font-weight:500}
.trow .v{text-align:right}
.total{display:flex;justify-content:space-between;align-items:baseline;border-top:2px solid var(--ink);padding-top:10px;font-family:var(--font-mono);font-size:.875rem}
.total b{font-family:var(--font-ui);font-size:2rem;font-weight:500;letter-spacing:-.03em}
.ms-fig figcaption{margin-top:12px}
.cell{fill:var(--signal);fill-opacity:0}
.cells-in{animation:fade var(--dur-fast) var(--ease-out)}
.argmax{fill:none;stroke:#14171c;stroke-width:2.2}
.argmax-all{fill:none;stroke:#e5391b;stroke-width:1.6;stroke-dasharray:3 2}
.grid-lines{stroke:rgb(20 23 28/.10);stroke-width:.5}

/* compare */
.vs{margin-top:36px;display:grid;gap:18px;grid-template-columns:1fr}
@media (min-width:820px){.vs{grid-template-columns:1fr 1fr}}
.vs article{border-radius:var(--r-panel);padding:clamp(18px,2.4vw,28px);display:flex;flex-direction:column;gap:14px}
.vs-a{background:var(--panel);border:1px solid var(--rule)}
.vs-b{background:var(--ink);color:var(--table)}
.vs h3{font-size:1.125rem;font-weight:500;letter-spacing:-.02em}
.extract{font:400 .8125rem/1.7 var(--font-mono);background:var(--sheet);color:#14171c;border:1px dashed #8a8d94;padding:16px;border-radius:6px;white-space:pre-wrap;flex:1}
.why-svg{max-width:300px;margin-inline:auto}
.vs-note{font-size:.9375rem}
.vs-a .vs-note{color:var(--ink-2)}
.points{margin-top:32px;display:grid;gap:28px 40px;grid-template-columns:1fr}
@media (min-width:720px){.points{grid-template-columns:1fr 1fr}}
@media (min-width:1100px){.points{grid-template-columns:1.2fr 1fr 1fr .9fr}}
.points li{border-top:2px solid var(--ink);padding-top:14px}
.points h3{font-size:1.0625rem;font-weight:500;margin-bottom:6px;letter-spacing:-.015em}
.points p{color:var(--ink-2);font-size:.9375rem}

/* eval */
.eval{margin-top:36px;background:var(--panel);border:1px solid var(--rule);border-radius:var(--r-panel);padding:clamp(18px,3vw,36px);display:grid;gap:30px}
.eval-ctrl{display:flex;flex-wrap:wrap;gap:14px 24px;align-items:flex-end}
.eval-ctrl .ctrl-label{width:100%;margin:0 0 -6px}
.stamp{border:1.5px solid var(--signal-ink);color:var(--signal-ink);border-radius:4px;padding:4px 10px;transform:rotate(-1.5deg);font-weight:500;letter-spacing:.08em;margin-left:auto}
.bars{display:grid;gap:22px}
.brow{display:grid;grid-template-columns:1fr;gap:6px}
@media (min-width:720px){.brow{grid-template-columns:230px 1fr 64px;align-items:center;gap:18px}}
.brow .nm{font-size:.9375rem;font-weight:500;line-height:1.3}.brow .nm small{display:block;font-weight:400;color:var(--ink-3);font-size:.75rem;margin-top:2px}
.brow .track{display:flex;align-items:center;height:26px}
.brow .fill{height:100%;border-radius:2px;width:100%;background:var(--ink-3);opacity:.6;transform:scaleX(var(--v,0));transform-origin:left;transition:transform var(--dur-explain) var(--ease-out)}
.brow:nth-child(2) .fill{transition-delay:50ms}.brow:nth-child(3) .fill{transition-delay:100ms}
.brow.hero-sys .fill{background:var(--signal);opacity:1}
.brow .val{font:500 1rem var(--font-mono);text-align:left}
@media (min-width:720px){.brow .val{text-align:right}}
.budget h3{font-size:.9375rem;font-weight:500;margin-bottom:12px}
.budget-bar{display:flex;height:44px;border-radius:8px;overflow:hidden;gap:2px;clip-path:inset(0);transition:clip-path 600ms var(--ease-in-out) 200ms}
.budget-bar div{display:flex;align-items:center;padding:0 10px;font:400 .75rem var(--font-mono);overflow:hidden;white-space:nowrap}
.budget-bar .b1{flex:0 0 7%;background:var(--ink-3);color:var(--table);min-width:34px;padding:0}
.budget-bar .b2{flex:0 0 14%;background:var(--ink);color:var(--table);min-width:54px}
.budget-bar .b3{flex:1;background:var(--signal-ink);color:var(--on-signal)}
.budget-leg{display:flex;flex-wrap:wrap;gap:6px 18px;margin-top:10px;font:400 .75rem var(--font-mono);color:var(--ink-2)}

/* stack */
.stack{margin-top:36px;display:grid;gap:28px 48px;grid-template-columns:1fr}
@media (min-width:720px){.stack{grid-template-columns:1fr 1fr}}
@media (min-width:1100px){.stack{grid-template-columns:repeat(3,1fr)}}
.sg{border-top:2px solid var(--ink);padding-top:14px}
.sg h3{font-size:.8125rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-2);margin-bottom:12px}
.sg li{display:flex;flex-direction:column;margin-bottom:12px}
.sg b{font-weight:500;font-size:1.0625rem;letter-spacing:-.01em}
.sg span{color:var(--ink-2);font-size:.875rem}

.close{padding-top:clamp(80px,11vw,160px);padding-bottom:40px}
.close .btn{margin-top:26px}
.foot{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;padding-block:36px 48px;border-top:1px solid var(--rule);font-size:.8125rem}

/* motion */
@keyframes rise{from{opacity:0;transform:translateY(12px)}}
@keyframes fade{from{opacity:0}}
@keyframes wipe{from{clip-path:inset(0 100% 0 0)}}

/* hero entrance: first load only (rare tier). backwards fill, so content is visible without it */
.hero>*{animation:rise 420ms var(--ease-out) backwards}
.hero>:nth-child(2){animation-delay:60ms}.hero>:nth-child(3){animation-delay:120ms}.hero>:nth-child(4){animation-delay:180ms}

/* scroll reveal: once, transform+opacity, hidden only under the .js guard; JS strips .rv after it lands */
.js .rv{opacity:0;transform:translateY(16px);transition:opacity 520ms var(--ease-out),transform 520ms var(--ease-out)}
.js .rv.in{opacity:1;transform:none}
.js .eval.rv:not(.in) .fill{transform:scaleX(0)}
.js .eval.rv:not(.in) .budget-bar{clip-path:inset(0 100% 0 0)}

/* demo state changes */
.ans-meta:not([hidden])>div{animation:rise var(--dur-ui) var(--ease-out) backwards}
.ans-meta:not([hidden])>div:nth-child(2){animation-delay:40ms}.ans-meta:not([hidden])>div:nth-child(3){animation-delay:80ms}.ans-meta:not([hidden])>div:nth-child(4){animation-delay:120ms}
.abstain{animation:rise var(--dur-ui) var(--ease-out) backwards}
.pipe-panel.swap .pp-text{animation:rise var(--dur-ui) var(--ease-out) backwards}
.pipe-panel.swap .pp-art{animation:rise var(--dur-ui) var(--ease-out) 50ms backwards}
.pipe-panel.swap .fn{animation:wipe 300ms var(--ease-out) backwards}
.pipe-panel.swap .fn:nth-child(2){animation-delay:110ms}.pipe-panel.swap .fn:nth-child(3){animation-delay:170ms}
.pipe-panel.swap .art-row{animation:rise var(--dur-ui) var(--ease-out) backwards}
.pipe-panel.swap .art-row:nth-child(2){animation-delay:100ms}.pipe-panel.swap .art-row:nth-child(3){animation-delay:150ms}

/* hover feedback: pointer devices only */
@media (hover:hover) and (pointer:fine){
  .nav-links a:hover{background:var(--panel);color:var(--ink)}
  .btn:hover .btn-dot{transform:translate(2px,-1px) scale(1.06)}
  .pill-back:hover span{transform:translateX(-3px)}
  .preset:hover{background:var(--sheet);color:#14171c;border-color:var(--ink)}
  .rk:hover{background:rgb(127 127 127/.1)}
  .cite:hover{background:var(--signal-ink);color:var(--on-signal)}
}

/* keyboard-driven changes stay instant (class set in app.js) */
.kbd .seg button,.kbd .tog,.kbd .ptab::before,.kbd .ptab::after,.kbd .brow .fill{transition:none}
.kbd .trow .bar,.kbd .cells-in,.kbd .pipe-panel.swap *{animation:none}

/* touch: 44px minimum targets */
@media (pointer:coarse),(max-width:640px){
  .brand{min-height:44px}
  .pill-back{min-height:44px}
  .preset,.tog,.seg button{min-height:44px}
  .preset,.tog{display:inline-flex;align-items:center}
  .seg{padding:3px}
  .seg button{display:inline-flex;align-items:center;justify-content:center}
  .ptab{min-height:44px}
}
@media (max-width:640px){
  .steps{flex-wrap:wrap;overflow:visible}
  .steps li{flex:1 1 auto}
  .pipe-tabs{grid-template-columns:repeat(5,minmax(96px,1fr));overflow-x:auto}
  .ask-row .btn{width:100%;justify-content:space-between}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  /* fewer and gentler: no movement, no stagger; short fades survive where they explain a change */
  *,*::before,*::after{transition-duration:.01ms!important;transition-delay:0s!important;animation-duration:.01ms!important;animation-delay:0s!important;animation-iteration-count:1!important}
  .js .rv{opacity:1;transform:none}
  .hero>*{animation:fade 200ms ease backwards!important}
  .ans-meta:not([hidden])>div,.abstain,.pipe-panel.swap .pp-text,.pipe-panel.swap .pp-art,.pipe-panel.swap .art-row{animation:fade 200ms ease backwards!important}
  .pipe-panel.swap .fn{animation:none!important}
  .js .eval.rv:not(.in) .fill{transform:scaleX(var(--v,0))}
  .js .eval.rv:not(.in) .budget-bar{clip-path:inset(0)}
}

/* page typography (inside inline SVG pages) */
.pg-head{font:500 6.5px var(--font-mono);fill:#6b6f77;letter-spacing:.04em}
.pg-title{font:600 21px var(--font-doc);fill:#1b1e24}
.pg-sub{font:italic 400 9px var(--font-doc);fill:#454952}
.pg-h{font:600 11px var(--font-doc);fill:#1b1e24}
.pg-lab{font:400 7.5px var(--font-ui);fill:#454952}
.pg-th{font:600 8.5px var(--font-ui);fill:#1b1e24}
.pg-td{font:400 10.5px var(--font-doc);fill:#1b1e24}
.pg-clause{font:600 12px var(--font-doc);fill:#1b1e24}
.pg-body{font:400 8.8px var(--font-doc);fill:#1b1e24;white-space:pre}

.ans-meta[hidden]{display:none}