/* emailito — shared by index.html and models.html.
 *
 * Specificity convention: container rules that style children by element are
 * wrapped in `:where(...)` so they contribute nothing, and a child's own class
 * wins on source order without needing to be scoped. Follow that when adding
 * one — `.doc :where(p + p)`, not `.doc p + p`. Written after `.where`/
 * `.where-local` (0,1,0) silently lost to `.engine p` (0,1,1) and the badges
 * rendered at the description's size and colour, which looked deliberate
 * rather than broken.
 */

:root{
  /* Palette inherited from the promo tile + logo — not re-invented. */
  --orange:#EF6417;
  --orange-lift:#FF8A4C;
  --orange-deep:#D2551A;
  --cyan:#37C6D6;          /* reserved: means "stays on your machine" */
  --paper:#FFF9F4;
  --paper-2:#FFF1E6;
  --ink:#2A211C;
  --ink-soft:#4A3F38;
  --muted:#8B7C71;
  --line:#E8D9CC;

  --sans:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Ubuntu,Roboto,"Helvetica Neue",sans-serif;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Cascadia Mono","Liberation Mono",monospace;

  --wrap:1080px;
  --r:14px;
}

*{box-sizing:border-box}
/* .btn sets display:inline-flex, which would otherwise beat the UA sheet's
   [hidden]{display:none} and leave the pre-launch store button visible. */
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--sans);
  color:var(--ink);
  background:
    radial-gradient(circle at 84% -4%, rgba(55,198,214,.13), transparent 42%),
    radial-gradient(circle at 6% 34%, rgba(255,138,76,.16), transparent 40%),
    linear-gradient(180deg,var(--paper) 0%, var(--paper-2) 100%);
  background-attachment:fixed;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--orange-deep)}

.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}

/* ---------- type ---------- */
h1,h2,h3{margin:0;line-height:1.08;letter-spacing:-.028em;font-weight:800}
h1{font-size:clamp(2.1rem,5.4vw,3.6rem)}
h2{font-size:clamp(1.55rem,3.2vw,2.25rem);letter-spacing:-.024em}
h3{font-size:1.02rem;letter-spacing:-.012em;font-weight:700}
p{margin:0}

.eyebrow{
  font-family:var(--mono);
  font-size:.72rem;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--muted);
}
.lede{font-size:clamp(1.02rem,1.7vw,1.16rem);color:var(--ink-soft);max-width:56ch}
.small{font-size:.9rem;color:var(--muted)}
.mono{font-family:var(--mono)}

/* ---------- header ---------- */
.masthead{padding:26px 0 0}
.masthead .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px}
.masthead img{width:150px}
.masthead nav{display:flex;gap:22px;font-size:.92rem;font-weight:600}
.masthead nav a{color:var(--ink-soft);text-decoration:none}
.masthead nav a:hover{color:var(--orange-deep)}

/* ---------- hero ---------- */
.hero{padding:56px 0 12px}
.hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:52px;align-items:center}
.hero h1{margin:14px 0 18px}
.hero h1 em{font-style:normal;color:var(--orange)}

.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.btn{
  display:inline-flex;align-items:center;gap:9px;
  padding:13px 22px;border-radius:11px;
  font-size:.97rem;font-weight:700;text-decoration:none;
  border:1.5px solid transparent;
  transition:transform .12s ease, box-shadow .12s ease, background .12s ease;
}
/* "Add to Chrome" is the real action, so it carries the weight; "Read the
   source" is the ghost alternative beside it. */
.cta-row .btn-store{
  background:linear-gradient(180deg,var(--orange-lift),var(--orange));
  color:#fff;box-shadow:0 6px 18px rgba(239,100,23,.28);
}
.cta-row .btn-store:hover{
  transform:translateY(-1px);box-shadow:0 9px 24px rgba(239,100,23,.34);
}
.cta-row .btn-source{background:#fff;color:var(--ink);border-color:var(--line)}
.cta-row .btn-source:hover{border-color:var(--orange-lift);color:var(--orange-deep)}
.cta-note{margin-top:13px;font-size:.85rem;color:var(--muted);max-width:44ch}
.btn:focus-visible{outline:2px solid var(--orange);outline-offset:3px}

/* ---------- the router: the page's signature ---------- */
.router{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r);
  padding:20px 20px 22px;
  box-shadow:0 12px 34px rgba(74,63,56,.07);
}
.router-q{
  font-size:.95rem;font-weight:700;letter-spacing:-.01em;
  margin-bottom:14px;
}
.switch{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;background:var(--paper-2);padding:4px;border-radius:10px}
.switch button{
  font:inherit;font-size:.82rem;font-weight:700;
  padding:9px 4px;border:0;border-radius:7px;background:transparent;color:var(--ink-soft);
  cursor:pointer;line-height:1.25;
  transition:background .14s ease,color .14s ease,box-shadow .14s ease;
}
.switch button small{display:block;font-family:var(--mono);font-size:.63rem;font-weight:500;letter-spacing:.04em;color:var(--muted);margin-top:2px}
.switch button[aria-selected="true"]{background:#fff;color:var(--ink);box-shadow:0 1px 3px rgba(74,63,56,.16)}
.switch button[aria-selected="true"] small{color:var(--orange)}
.switch button:focus-visible{outline:2px solid var(--orange);outline-offset:2px}

.diagram{margin-top:16px}

.machine{
  border:1.5px dashed var(--cyan);
  border-radius:12px;
  padding:14px 14px 16px;
  position:relative;
  background:linear-gradient(180deg,rgba(55,198,214,.055),rgba(55,198,214,.015));
  transition:border-color .2s ease,background .2s ease;
}
.machine-tag{
  position:absolute;top:-9px;left:14px;
  background:#fff;padding:0 7px;
  font-family:var(--mono);font-size:.64rem;letter-spacing:.13em;text-transform:uppercase;
  color:var(--cyan);font-weight:600;
}
.node{
  border:1px solid var(--line);border-radius:9px;background:#fff;
  padding:10px 13px;
  display:flex;align-items:baseline;justify-content:space-between;gap:10px;
}
.node b{font-size:.9rem;font-weight:700;letter-spacing:-.01em}
.node span{font-family:var(--mono);font-size:.7rem;color:var(--muted)}
.node-engine{border-color:var(--cyan);background:rgba(55,198,214,.07)}
.node-engine b{color:#0F7C8A}
.node-engine span{color:#159AAB}

.pipe{height:18px;width:1.5px;background:var(--line);margin:0 auto}
.pipe-out{background:linear-gradient(180deg,var(--line),var(--orange));height:26px}

.leaves{margin-top:0}
.leaves .node{border-color:var(--orange-lift);background:rgba(255,138,76,.08)}
.leaves .node b{color:var(--orange-deep)}
.leaves .node span{color:var(--orange-deep)}
.crossing{
  font-family:var(--mono);font-size:.66rem;letter-spacing:.06em;
  color:var(--orange-deep);text-align:center;padding:5px 0 3px;font-weight:600;
}
.verdict{
  margin-top:14px;padding-top:13px;border-top:1px solid var(--line);
  font-size:.86rem;color:var(--ink-soft);
}
.verdict b{color:var(--ink)}

/* engine states */
.router[data-engine="claude"] .machine{border-color:var(--orange-lift);background:linear-gradient(180deg,rgba(255,138,76,.05),rgba(255,138,76,.01))}
.router[data-engine="claude"] .machine-tag{color:var(--orange-deep)}
.router:not([data-engine="claude"]) .leaves{display:none}
.router[data-engine="claude"] .slot-inside{display:none}

/* ---------- sections ---------- */
section{padding:74px 0}
.sec-head{max-width:62ch;margin-bottom:34px}
.sec-head h2{margin:10px 0 12px}

.rule{height:1px;background:var(--line);border:0;margin:0}

/* what it does */
.does{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r);
  padding:22px 20px;
}
.card .n{
  font-family:var(--mono);font-size:.68rem;letter-spacing:.14em;color:var(--orange);
  font-weight:700;text-transform:uppercase;
}
.card h3{margin:9px 0 7px}
.card p{font-size:.92rem;color:var(--ink-soft)}

/* engines table */
.engines{display:grid;gap:12px}
.engine{
  display:grid;grid-template-columns:190px 1fr 176px;gap:20px;align-items:start;
  background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:20px 22px;
}
.engine-name{display:flex;flex-direction:column;gap:3px}
.engine-name b{font-size:1.02rem;letter-spacing:-.015em}
.engine-name span{font-family:var(--mono);font-size:.7rem;color:var(--muted);letter-spacing:.04em}
.engine-desc{font-size:.92rem;color:var(--ink-soft)}
.where{
  font-family:var(--mono);font-size:.72rem;line-height:1.5;
  padding:8px 11px;border-radius:8px;font-weight:600;
}
.where-local{background:rgba(55,198,214,.12);color:#0F7C8A}
.where-cloud{background:rgba(255,138,76,.14);color:var(--orange-deep)}

/* proof */
.proof{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:start}
.allow{
  background:var(--ink);color:#F6EDE6;border-radius:var(--r);
  padding:20px 22px;font-family:var(--mono);font-size:.78rem;line-height:1.85;
  /* The line breaks carry the meaning here — this is a real config block, so
     it keeps its shape and scrolls rather than reflowing into prose. */
  white-space:pre;
  overflow-x:auto;
  margin:0;
}
.allow .k{color:#FFB98A}
.allow .c{color:#8E7F75}
.allow .h{color:var(--cyan)}
.claims{display:grid;gap:14px;margin:0;padding:0;list-style:none}
.claims li{display:grid;grid-template-columns:auto 1fr;gap:11px;font-size:.94rem;color:var(--ink-soft)}
.claims b{color:var(--ink)}
.tick{
  width:19px;height:19px;border-radius:50%;background:rgba(55,198,214,.16);
  color:#0F7C8A;font-size:.7rem;font-weight:800;
  display:grid;place-items:center;margin-top:2px;
}

/* shots */
.shots{display:grid;gap:26px}
.shot{border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:#fff;box-shadow:0 12px 34px rgba(74,63,56,.07)}
.shot figcaption{padding:13px 18px;font-size:.87rem;color:var(--muted);border-top:1px solid var(--line)}
.shot figcaption b{color:var(--ink-soft)}


/* footer */
footer{padding:52px 0 64px;border-top:1px solid var(--line);margin-top:20px}
.foot{display:flex;flex-wrap:wrap;gap:24px;justify-content:space-between;align-items:flex-start}
.foot img{width:126px;margin-bottom:10px}
.foot nav{display:flex;flex-wrap:wrap;gap:20px;font-size:.9rem}
.foot nav a{color:var(--ink-soft);text-decoration:none;font-weight:600}
.foot nav a:hover{color:var(--orange-deep)}
.colophon{margin-top:22px;font-family:var(--mono);font-size:.71rem;color:var(--muted);letter-spacing:.02em}

/* ---------- responsive ---------- */
@media (max-width:900px){
  .hero-grid,.proof{grid-template-columns:1fr;gap:34px}
  .does{grid-template-columns:1fr}
  .engine{grid-template-columns:1fr;gap:12px}
  .where{justify-self:start}
  section{padding:56px 0}
  .hero{padding:36px 0 0}
  .masthead nav{display:none}
  /* Label and host stop competing for one line at narrow widths. */
  .node{flex-direction:column;align-items:flex-start;gap:2px}
}

@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
}

/* ==========================================================================
   Documentation pages (models.html) — same system, denser measure.
   ========================================================================== */

.doc{padding:52px 0 20px}
.doc-head{max-width:60ch}
.doc h1{font-size:clamp(1.9rem,4vw,2.7rem);margin:12px 0 16px}
.doc .lede{font-size:clamp(1rem,1.6vw,1.1rem)}

.back{
  display:inline-flex;align-items:center;gap:7px;
  font-family:var(--mono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;
  color:var(--muted);text-decoration:none;font-weight:600;
}
.back:hover{color:var(--orange-deep)}

.doc section{padding:44px 0 0}
.doc h2{font-size:clamp(1.3rem,2.4vw,1.7rem);margin-bottom:10px}
.doc :where(p + p){margin-top:12px}
.doc .body{font-size:.97rem;color:var(--ink-soft);max-width:64ch}

/* answer-first summary block */
.pick{
  background:#fff;border:1px solid var(--line);border-left:3px solid var(--orange);
  border-radius:var(--r);padding:20px 22px;margin-top:20px;
}
.pick dl{margin:0;display:grid;gap:13px}
.pick dt{font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--orange-deep);font-weight:700}
.pick dd{margin:3px 0 0;font-size:.95rem;color:var(--ink-soft)}
.pick dd b{color:var(--ink)}

/* data tables */
.doc .table-scroll{overflow-x:auto;margin-top:18px;border:1px solid var(--line);border-radius:var(--r);background:#fff}
.doc table{border-collapse:collapse;width:100%;min-width:620px}
.doc th,td{text-align:left;padding:12px 16px;border-bottom:1px solid var(--line);vertical-align:top}
.doc thead th{
  font-family:var(--mono);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;
  color:var(--muted);font-weight:700;background:var(--paper);
  border-bottom:1px solid var(--line);white-space:nowrap;
}
.doc tbody tr:last-child td{border-bottom:0}
.doc td.num{font-family:var(--mono);font-size:.82rem;white-space:nowrap;color:var(--ink-soft)}
.doc td.name{white-space:nowrap}
.doc td.name b{font-size:.95rem}
.doc td.name span{display:block;font-family:var(--mono);font-size:.68rem;color:var(--muted);margin-top:2px}
.doc td.use{font-size:.9rem;color:var(--ink-soft);min-width:240px}
.doc tr.rec td{background:rgba(55,198,214,.07)}
.doc tr.rec td.name b{color:#0F7C8A}
.doc .tag{
  display:inline-block;font-family:var(--mono);font-size:.6rem;letter-spacing:.09em;
  text-transform:uppercase;font-weight:700;padding:2px 7px;border-radius:999px;
  background:rgba(55,198,214,.18);color:#0F7C8A;margin-left:7px;vertical-align:middle;
}
.doc .tag-warn{background:rgba(255,138,76,.2);color:var(--orange-deep)}

/* note callout */
.note{
  margin-top:18px;padding:15px 18px;border-radius:11px;
  background:rgba(55,198,214,.08);border:1px solid rgba(55,198,214,.28);
  font-size:.92rem;color:var(--ink-soft);
}
.note b{color:var(--ink)}
.note-warn{background:rgba(255,138,76,.09);border-color:rgba(255,138,76,.32)}

/* how-to-check list */
.checks{list-style:none;margin:18px 0 0;padding:0;display:grid;gap:11px}
.checks li{display:grid;grid-template-columns:132px 1fr;gap:14px;font-size:.93rem;color:var(--ink-soft);align-items:baseline}
.checks b{font-family:var(--mono);font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.checks code{font-family:var(--mono);font-size:.85em;background:var(--paper-2);padding:1px 6px;border-radius:5px;color:var(--ink)}

@media (max-width:900px){
  .doc section{padding:34px 0 0}
  .checks li{grid-template-columns:1fr;gap:2px}
}

/* Tables become cards below this width: a four-column table with prose in it
   is unreadable on a phone, and horizontal scrolling hides the column that
   matters most. Each row carries its own labels instead. */
@media (max-width:760px){
  .doc .table-scroll{overflow-x:visible;border:0;background:transparent;border-radius:0}
  .doc table{min-width:0;display:block}
  .doc thead{display:none}
  .doc tbody{display:block}
  .doc tbody tr{
    display:block;background:#fff;border:1px solid var(--line);
    border-radius:var(--r);padding:15px 17px;margin-bottom:11px;
  }
  .doc tbody tr.rec{background:rgba(55,198,214,.07);border-color:rgba(55,198,214,.45)}
  /* the desktop per-cell tint would paint patchy blocks inside the card */
  .doc tbody tr.rec td{background:transparent}
  .doc tbody td{display:block;border:0;padding:0}
  .doc tbody td + td{margin-top:9px}
  .doc td.name{white-space:normal}
  .doc td.num{display:inline-block;margin-right:18px}
  .doc td.num::before{
    content:attr(data-label);
    display:block;
    font-size:.62rem;letter-spacing:.09em;text-transform:uppercase;
    color:var(--muted);font-weight:700;margin-bottom:1px;
  }
  .doc td.use{min-width:0;margin-top:12px;padding-top:11px;border-top:1px solid var(--line)}
}

/* Spec line under each engine's description: answers "can my machine run
   this?" where the question is raised, instead of in a separate section
   further down. */
.engine-req{
  margin-top:10px;padding-top:9px;border-top:1px dashed var(--line);
  font-family:var(--mono);font-size:.73rem;line-height:1.65;
  color:var(--muted);letter-spacing:.01em;
}
.engines-more{
  margin-top:20px;font-size:.93rem;color:var(--ink-soft);max-width:66ch;
}