/* Jupiter Tech website — built on the Callisto design system (light).
   Tokens mirror jupiter-screen-kit/kit/src/kit.css so the site and the product read as one thing. */
@font-face{font-family:"Inter";src:url("fonts/Inter-Variable.woff2") format("woff2");font-weight:100 900;font-display:swap}
@font-face{font-family:"JetBrains Mono";src:url("fonts/JetBrainsMono-400.woff2") format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"JetBrains Mono";src:url("fonts/JetBrainsMono-500.woff2") format("woff2");font-weight:500;font-display:swap}
@font-face{font-family:"Newsreader";src:url("fonts/Newsreader-normal.woff2") format("woff2");font-weight:200 800;font-style:normal;font-display:swap}
@font-face{font-family:"Newsreader";src:url("fonts/Newsreader-italic.woff2") format("woff2");font-weight:200 800;font-style:italic;font-display:swap}

:root{
  --bg:#f7f7f7; --panel:#ffffff; --muted:#f4f4f5; --subtle:#fafafa;
  --line:#e7e7e9; --line-soft:#efeff1;
  --fg:#0a0a0a; --fg-2:#3f3f46; --fg-3:#71717a; --fg-4:#a1a1aa;
  --brand:#f59e0b; --brand-deep:#d97706; --brand-ink:#1c1917; --brand-tint:#fff7ea; --brand-line:#f6c56b;
  --green:#15803d; --green-bg:#e7f6ec; --green-solid:#2e8b57;
  --red:#dc2626; --red-bg:#fdeaea;
  --amber:#b45309; --amber-bg:#fef3e2;
  --blue:#2563eb; --blue-bg:#e8f0fe;
  --wa:#1faa59;
  --ink:#0a0a0a; --ink-2:#18181b; --ink-line:#27272a; --ink-fg:#fafafa; --ink-fg-2:#a1a1aa;
  --radius:12px; --radius-lg:14px;
  --shadow:0 1px 2px rgba(0,0,0,.04);
  --shadow-md:0 6px 20px -8px rgba(0,0,0,.14),0 1px 2px rgba(0,0,0,.05);
  --shadow-lg:0 24px 60px -18px rgba(0,0,0,.22),0 2px 6px rgba(0,0,0,.06);
  --sans:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --serif:"Newsreader",Georgia,"Times New Roman",serif;
  --wrap:1180px; --gutter:20px;
  --sec:96px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto} *,*::before,*::after{animation-duration:.001s!important;animation-iteration-count:1!important;transition-duration:.001s!important}}
body{font-family:var(--sans);font-size:16px;line-height:1.6;color:var(--fg);background:var(--panel);-webkit-font-smoothing:antialiased;font-feature-settings:"cv11","ss01";}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.mono{font-family:var(--mono)}
.tnum{font-variant-numeric:tabular-nums}
.muted{color:var(--fg-3)}
.wrap{width:100%;max-width:var(--wrap);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}

/* ---------- type ---------- */
.eyebrow{font-size:11.5px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--fg-3);display:flex;align-items:center;gap:10px}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--brand);border-radius:2px}
.eyebrow.plain::before{display:none}
.display{font-size:clamp(36px,5.2vw,60px);font-weight:700;letter-spacing:-.032em;line-height:1.02;text-wrap:balance}
h1.h1{font-size:clamp(34px,4.6vw,52px);font-weight:700;letter-spacing:-.03em;line-height:1.05;text-wrap:balance}
.h2{font-size:clamp(28px,3.4vw,38px);font-weight:700;letter-spacing:-.028em;line-height:1.1;text-wrap:balance}
.h3{font-size:clamp(20px,2vw,23px);font-weight:600;letter-spacing:-.018em;line-height:1.25;text-wrap:balance}
.h4{font-size:17px;font-weight:600;letter-spacing:-.012em;line-height:1.3}
.lede{font-size:clamp(17px,1.5vw,19.5px);line-height:1.55;color:var(--fg-2);max-width:62ch;text-wrap:pretty}
.small{font-size:14px;line-height:1.55}
.cap{font-size:12.5px;line-height:1.5;color:var(--fg-3)}
.accent{color:var(--brand-deep)}
.sec-head{display:flex;flex-direction:column;gap:14px;max-width:760px;margin-bottom:44px}
.sec-head .lede{margin-top:2px}
.sec-head.center{align-items:center;text-align:center;margin-inline:auto}
.sec-head.center .eyebrow::before{display:none}

/* ---------- sections ---------- */
.section{padding-block:var(--sec)}
.section.tight{padding-block:calc(var(--sec) * .6)}
.section.alt{background:var(--bg);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section.dark{background:var(--ink);color:var(--ink-fg)}
.section.dark .eyebrow{color:var(--ink-fg-2)}
.section.dark .lede{color:var(--ink-fg-2)}
.section.alt + .section.alt{border-top:0}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:40px;padding:0 16px;border-radius:9px;border:1px solid var(--line);background:#fff;font-size:14px;font-weight:500;color:var(--fg);white-space:nowrap;transition:transform .15s ease,box-shadow .15s ease,background .15s ease}
.btn:hover{box-shadow:var(--shadow-md);transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}
.btn.brand{background:var(--brand);border-color:var(--brand-ink);color:var(--brand-ink)}
.btn.brand:hover{background:#f7a623}
.btn.dark{background:var(--fg);border-color:var(--fg);color:#fff}
.btn.ghost{border-color:transparent;background:transparent}
.btn.ghost:hover{background:var(--muted);box-shadow:none;transform:none}
.btn.lg{height:46px;padding:0 20px;font-size:15px;border-radius:10px}
.btn.sm{height:32px;padding:0 12px;font-size:13px;border-radius:8px}
.btn.onink{background:transparent;border-color:var(--ink-line);color:var(--ink-fg)}
.btn.onink:hover{background:var(--ink-2)}
.btn.block{width:100%}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center}

/* ---------- pills / tags / kbd (product components) ---------- */
.pill{display:inline-flex;align-items:center;gap:6px;height:22px;padding:0 9px;border-radius:999px;font-size:11.5px;font-weight:500;border:1px solid transparent;white-space:nowrap;line-height:1}
.pill .dot{width:6px;height:6px;border-radius:50%;background:currentColor}
.pill.green{background:var(--green-bg);color:var(--green)}
.pill.red{background:var(--red-bg);color:var(--red)}
.pill.amber{background:var(--amber-bg);color:var(--amber)}
.pill.blue{background:var(--blue-bg);color:var(--blue)}
.pill.gray{background:var(--muted);color:var(--fg-2)}
.pill.line{background:#fff;border-color:var(--line);color:var(--fg-2)}
.pill.dark{background:var(--fg);color:#fff}
.pill.brandline{background:var(--brand-tint);border-color:var(--brand-line);color:var(--brand-deep)}
.pill.wa{background:#e6f7ec;color:#137a3f}
.tag{display:inline-flex;align-items:center;height:19px;padding:0 6px;border-radius:4px;font-size:9.5px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;line-height:1}
.tag.live{background:var(--brand);color:var(--brand-ink)}
.tag.line{border:1px solid var(--line);color:var(--fg-3);background:#fff}
.tag.sample{border:1px solid var(--brand-line);background:var(--brand-tint);color:var(--brand-deep)}
.tag.ink{background:var(--fg);color:#fff}
.kbd{white-space:nowrap;font-family:var(--mono);font-size:10.5px;color:var(--fg-3);border:1px solid var(--line);background:var(--subtle);border-radius:5px;padding:2px 6px;line-height:1.2}
.chip{display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 12px;border-radius:999px;border:1px solid var(--line);font-size:12.5px;font-weight:500;background:#fff;color:var(--fg-2);white-space:nowrap}
.chip.on{background:var(--fg);border-color:var(--fg);color:#fff}
.seg{display:inline-flex;background:var(--muted);border-radius:11px;padding:4px;gap:3px}
.seg .o{padding:8px 16px;border-radius:8px;font-size:14px;font-weight:500;color:var(--fg-3);transition:background .15s,color .15s}
.seg .o.on{background:#fff;color:var(--fg);box-shadow:0 1px 2px rgba(0,0,0,.08)}
.seg.dark .o.on{background:var(--fg);color:#fff}
.seg.full{display:flex}.seg.full .o{flex:1;text-align:center}

/* ---------- cards / grids ---------- */
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.card.pad{padding:22px 24px}
.card.soft{background:var(--subtle)}
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
.g6{grid-template-columns:repeat(6,minmax(0,1fr))}
@media (max-width:980px){.g3,.g4{grid-template-columns:repeat(2,minmax(0,1fr))}.g6{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media (max-width:620px){.g2,.g3,.g4{grid-template-columns:1fr}.g6{grid-template-columns:repeat(2,minmax(0,1fr))}}
.split{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:56px;align-items:center}
.split.rev{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}
.split.even{grid-template-columns:1fr 1fr;gap:48px}
@media (max-width:900px){.split,.split.rev,.split.even{grid-template-columns:1fr;gap:32px}.split.rev>*:first-child{order:2}}
.iconbox{width:34px;height:34px;border-radius:9px;background:var(--muted);display:flex;align-items:center;justify-content:center;color:var(--fg-2);flex-shrink:0}
.iconbox svg{width:17px;height:17px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.iconbox.brand{background:var(--brand);color:var(--brand-ink)}
.iconbox.soft{background:var(--brand-tint);color:var(--brand-deep)}
.iconbox.onink{background:var(--ink-2);color:var(--ink-fg)}
.checklist{list-style:none;display:flex;flex-direction:column;gap:10px}
.checklist li{display:flex;gap:10px;align-items:flex-start;font-size:15px;line-height:1.5;color:var(--fg-2)}
.checklist li::before{content:"";flex-shrink:0;width:18px;height:18px;margin-top:3px;border-radius:50%;background:var(--green-bg) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2315803d' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") center/11px no-repeat}
.checklist.brand li::before{background-color:var(--brand-tint);background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23d97706' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E")}
.checklist.x li::before{background-color:var(--muted);background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2371717a' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12h14'/%3E%3C/svg%3E")}

/* ---------- top nav ---------- */
.nav{position:sticky;top:env(safe-area-inset-top,0px);z-index:50;background:rgba(255,255,255,.88);backdrop-filter:saturate(1.4) blur(10px);-webkit-backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}
.nav-inner{height:60px;display:flex;align-items:center;gap:28px}
.logo-link{display:flex;align-items:center;color:var(--fg)}
.logo-link img.wordmark{height:22px;width:auto;display:block}
.footer .logo-link img.wordmark{height:18px}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-links a{display:inline-flex;align-items:center;height:36px;padding:0 12px;border-radius:9px;font-size:14px;font-weight:500;color:var(--fg-2);border:1px solid transparent}
.nav-links a:hover{background:var(--muted);color:var(--fg)}
.nav-links a.on{background:#fff;border-color:var(--line);box-shadow:0 1px 2px rgba(0,0,0,.05);color:var(--fg)}
.nav-cta{margin-left:auto;display:flex;align-items:center;gap:10px}
.nav-burger{display:none;width:40px;height:40px;border-radius:9px;border:1px solid var(--line);align-items:center;justify-content:center;margin-left:auto}
.nav-burger svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round}
.nav-panel{display:none}
@media (max-width:860px){
  .nav-links,.nav-cta{display:none}
  .nav-burger{display:inline-flex}
  .nav-panel.open{display:block;border-top:1px solid var(--line);background:#fff;padding:12px var(--gutter) 18px}
  .nav-panel a{display:flex;align-items:center;justify-content:space-between;height:46px;font-size:16px;font-weight:500;border-bottom:1px solid var(--line-soft)}
  .nav-panel .btn{margin-top:14px;width:100%}
}

/* ---------- hero ---------- */
.hero{padding-block:64px 40px;position:relative;isolation:isolate}
.hero-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:40px}
.hero-copy{display:flex;flex-direction:column;gap:22px;max-width:860px}
.hero-copy .lede{max-width:66ch}
.hero-meta{display:flex;flex-wrap:wrap;gap:8px 18px;align-items:center;color:var(--fg-3);font-size:13.5px}
.hero-meta b{color:var(--fg);font-weight:600}
.hero-visual{position:relative;margin-top:16px;margin-bottom:34px}
.hero-visual .frame{box-shadow:var(--shadow-lg)}
.float-card{position:absolute;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow-lg);padding:14px 16px;z-index:3}
.float-card.tr{right:-8px;bottom:-26px;width:min(360px,46%)}
.float-card .ttl{font-size:12px;font-weight:600;color:var(--fg-3);letter-spacing:.06em;text-transform:uppercase;display:flex;align-items:center;gap:8px;margin-bottom:8px}
.float-card .frame{box-shadow:none;border-radius:8px}
.aibar{display:flex;align-items:center;gap:10px;height:46px;border-radius:12px;background:#fff;border:1px solid var(--line);box-shadow:0 8px 28px -6px rgba(0,0,0,.18);padding:0 8px 0 14px;font-size:13.5px;color:var(--fg-3)}
.aibar .spark{width:18px;height:18px;color:var(--brand);flex-shrink:0}
.aibar .send{margin-left:auto;width:32px;height:32px;border-radius:8px;background:var(--brand);border:1px solid var(--brand-ink);display:flex;align-items:center;justify-content:center;color:var(--brand-ink);flex-shrink:0}
.aibar .send svg{width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.aibar .q{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--fg)}
.aibar.float{position:absolute;left:42%;transform:translateX(-50%);bottom:34px;width:min(560px,72%);z-index:2}
.hero-ground{position:absolute;inset:auto 0 0 0;height:46%;background:var(--bg);border-top:1px solid var(--line);z-index:-1}
@media (max-width:760px){
  .hero{padding-block:40px 28px}
  .frame-bar .kbd,.frame-bar .tn,.aibar .kbd{display:none}
  .frame-bar{font-size:12px;padding:0 10px;gap:8px}
  .float-card.tr{position:static;width:100%;margin-top:14px}
  .aibar.float{position:static;transform:none;width:100%;margin-top:12px}
  .hero-ground{display:none}
}

/* ---------- product frame + screenshots ---------- */
.frame{position:relative;background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md)}
.frame-bar{height:38px;display:flex;align-items:center;gap:10px;padding:0 12px;border-bottom:1px solid var(--line);background:#fff;font-size:12.5px;color:var(--fg-3)}
.frame-bar b{color:var(--fg);font-weight:600}
.frame-bar .s{color:#c4c4c8}
.frame-bar .end{margin-left:auto;display:flex;align-items:center;gap:8px}
.frame-bar>*{white-space:nowrap}
.frame-bar .tn{overflow:hidden;text-overflow:ellipsis}
.shot{position:relative;aspect-ratio:16/9;background:var(--bg);overflow:hidden}
.shot img{width:100%;height:100%;object-fit:cover;display:block}
.shot .open{position:absolute;right:12px;bottom:12px;z-index:2;opacity:0;transform:translateY(4px);transition:opacity .15s,transform .15s}
.frame:hover .shot .open,.frame:focus-within .shot .open{opacity:1;transform:none}
.shot .sample{position:absolute;left:12px;bottom:12px;z-index:2}
.frame.clickable{cursor:zoom-in}
.frame.clickable:hover{box-shadow:var(--shadow-lg)}
/* mobile: crop to a focal region so the screen is legible on a phone */
@media (max-width:760px){
  .shot.crop{aspect-ratio:4/3}
  .shot.crop img{position:absolute;width:calc(var(--z,2) * 100%);height:auto;max-width:none;left:calc(50% - var(--fx,.5) * var(--z,2) * 100%);top:calc(50% - var(--fy,.5) * var(--z,2) * 75%)}
  .shot .open{opacity:1;transform:none}
}
.thumbs{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
@media (max-width:900px){.thumbs{grid-template-columns:repeat(2,minmax(0,1fr))}}
.thumb{display:flex;flex-direction:column;gap:10px;text-align:left}
.thumb .frame{cursor:zoom-in}
.thumb .t{font-size:14px;font-weight:600}
.thumb .d{font-size:13px;color:var(--fg-3);line-height:1.45}
.thumb .step{font-family:var(--mono);font-size:11px;color:var(--brand-deep);font-weight:500}

/* ---------- room explorer (the two rooms) ---------- */
.explorer{border:1px solid var(--line);border-radius:16px;background:#fff;box-shadow:var(--shadow-md);overflow:hidden}
.explorer-head{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;padding:16px 18px;border-bottom:1px solid var(--line);background:var(--subtle)}
.explorer-role{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--fg-2)}
.explorer-body{display:grid;grid-template-columns:232px minmax(0,1fr);min-height:560px}
.explorer-nav{border-right:1px solid var(--line);padding:12px 10px;background:var(--bg);display:flex;flex-direction:column;gap:2px;overflow:auto}
.ni{display:flex;align-items:center;gap:11px;height:38px;padding:0 10px;border-radius:9px;font-size:14px;color:#27272a;border:1px solid transparent;text-align:left;width:100%;flex-shrink:0;white-space:nowrap}
.ni svg{width:16px;height:16px;flex-shrink:0;stroke:currentColor;fill:none;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}
.ni .n{margin-left:auto;font-family:var(--mono);font-size:10.5px;color:var(--fg-4)}
.ni:hover{background:rgba(255,255,255,.7)}
.ni.on{background:#fff;border-color:var(--line);box-shadow:0 1px 2px rgba(0,0,0,.05);font-weight:500;color:var(--fg)}
.ni.on .n{color:var(--fg-3)}
.explorer-nav .grp{font-size:10.5px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--fg-3);padding:12px 10px 6px}
.explorer-stage{display:flex;flex-direction:column;min-width:0}
.tabsbar{min-height:46px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:4px;padding:6px 14px;flex-wrap:wrap}
.tabsbar .t{padding:6px 12px;border-radius:8px;font-size:13px;font-weight:500;color:#3f3f46;white-space:nowrap}
.tabsbar .t.on{background:var(--muted);color:var(--fg)}
.tabsbar .end{margin-left:auto;display:flex;align-items:center;gap:8px}
.stage-shot{padding:16px 16px 0}
.stage-shot .frame{box-shadow:none}
.stage-shot .shot img{transition:opacity .2s ease}
.stage-shot .shot img.fade{opacity:0}
.stage-blurb{padding:16px 18px 18px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:16px;align-items:start}
.stage-blurb h3{font-size:16px;font-weight:600;letter-spacing:-.01em;margin-bottom:4px}
.stage-blurb p{font-size:14px;color:var(--fg-2);line-height:1.5;max-width:70ch}
.stage-blurb .usp{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
@media (max-width:860px){
  .explorer-body{grid-template-columns:1fr;min-height:0}
  .explorer-nav{flex-direction:row;border-right:0;border-bottom:1px solid var(--line);padding:10px;gap:6px;overflow-x:auto;scrollbar-width:none}
  .explorer-nav::-webkit-scrollbar{display:none}
  .explorer-nav .grp{display:none}
  .ni{width:auto;height:34px;border-radius:999px;border-color:var(--line);background:#fff;font-size:13px;padding:0 12px}
  .ni.on{background:var(--fg);color:#fff;border-color:var(--fg)}
  .ni .n{display:none}
  .stage-blurb{grid-template-columns:1fr}
}

/* ---------- engines ---------- */
.engine{display:flex;flex-direction:column;gap:14px;padding:22px 22px 20px;position:relative;transition:transform .15s,box-shadow .15s}
.engine:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}
.engine .k{font-family:var(--mono);font-size:11px;color:var(--fg-3);letter-spacing:.04em}
.engine h3{font-size:18px;font-weight:600;letter-spacing:-.015em;line-height:1.3}
.engine p{font-size:14.5px;color:var(--fg-2);line-height:1.5;flex:1}
.engine .proof{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--fg-3);flex-wrap:wrap}
.engine .proof button{display:inline-flex;align-items:center;gap:5px;font-size:12.5px;font-weight:500;color:var(--fg);border:1px solid var(--line);border-radius:999px;height:28px;padding:0 10px;background:#fff}
.engine .proof button:hover{border-color:var(--fg)}
.engine .proof button svg{width:13px;height:13px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* ---------- comparison table ---------- */
.compare{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.compare table{width:100%;border-collapse:collapse;font-size:14px}
.compare th{text-align:left;font-weight:600;font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--fg-3);padding:12px 16px;background:var(--subtle);border-bottom:1px solid var(--line)}
.compare th.hi{color:var(--brand-deep);background:var(--brand-tint)}
.compare td{padding:12px 16px;border-bottom:1px solid var(--line-soft);vertical-align:top;color:var(--fg-2)}
.compare td:first-child{font-weight:500;color:var(--fg);width:30%}
.compare tr:last-child td{border-bottom:0}
.compare td.hi{background:#fffbf2;color:var(--fg)}
.compare .y{display:inline-flex;align-items:center;gap:6px;color:var(--green);font-weight:500}
.compare .n{color:var(--fg-4)}
.tablewrap{overflow-x:auto;-webkit-overflow-scrolling:touch}

/* ---------- dark band (ask the data) ---------- */
.ask{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:48px;align-items:center}
@media (max-width:900px){.ask{grid-template-columns:1fr}}
.qs{display:flex;flex-direction:column;gap:8px;margin-top:20px}
.qs button{display:flex;align-items:center;gap:10px;text-align:left;padding:11px 14px;border-radius:10px;background:var(--ink-2);border:1px solid var(--ink-line);color:var(--ink-fg);font-size:14px;line-height:1.4;transition:border-color .15s,background .15s}
.qs button:hover,.qs button.on{border-color:var(--brand);background:#1f1d1a}
.qs button .spark{width:16px;height:16px;color:var(--brand);flex-shrink:0}
.dark .frame{border-color:var(--ink-line);box-shadow:0 30px 80px -30px rgba(0,0,0,.8)}
.dark .frame-bar{background:var(--ink-2);border-color:var(--ink-line);color:var(--ink-fg-2)}
.dark .frame-bar b{color:var(--ink-fg)}
.dark .card{background:var(--ink-2);border-color:var(--ink-line);box-shadow:none}
.dark .kbd{background:var(--ink-2);border-color:var(--ink-line);color:var(--ink-fg-2)}
.stat-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.stat-row>div{padding:18px 20px;border-left:1px solid var(--line)}
.stat-row>div:first-child{border-left:0}
.stat-row .v{font-size:30px;font-weight:700;letter-spacing:-.03em;line-height:1.1;margin-top:6px;font-variant-numeric:tabular-nums}
.stat-row .l{font-size:12.5px;font-weight:500;color:var(--fg-2)}
.stat-row .d{font-size:12.5px;color:var(--fg-3);margin-top:4px}
.dark .stat-row{background:var(--ink-2);border-color:var(--ink-line)}
.dark .stat-row>div{border-color:var(--ink-line)}
.dark .stat-row .l{color:var(--ink-fg-2)} .dark .stat-row .d{color:var(--ink-fg-2)}
@media (max-width:620px){.stat-row{grid-template-columns:1fr}.stat-row>div{border-left:0;border-top:1px solid var(--line)}.stat-row>div:first-child{border-top:0}.dark .stat-row>div{border-color:var(--ink-line)}}

/* ---------- conversion path ---------- */
.path{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;position:relative}
.path::before{content:"";position:absolute;left:4%;right:4%;top:11px;height:2px;background:linear-gradient(90deg,var(--brand-line),var(--brand));z-index:0}
.path .thumb{position:relative;z-index:1}
.path .step{display:flex;align-items:center;gap:8px}
.path .step i{width:22px;height:22px;border-radius:50%;background:#fff;border:2px solid var(--brand);display:inline-flex;align-items:center;justify-content:center;font-style:normal;font-family:var(--mono);font-size:10.5px;color:var(--brand-deep);font-weight:500;flex-shrink:0}
.path .thumb:last-child .step i{background:var(--brand);color:var(--brand-ink);border-color:var(--brand-ink)}
@media (max-width:900px){.path{grid-template-columns:repeat(2,minmax(0,1fr))}.path::before{display:none}}

/* ---------- logos ---------- */
.logos{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:28px 44px}
.logos img{height:28px;width:auto;max-width:150px;object-fit:contain;filter:grayscale(1);opacity:.72;transition:filter .2s,opacity .2s}
.logos img.tall{height:54px}
/* a long lockup (e.g. "WhatsApp Business") needs more room than the 150px cap,
   or it letterboxes and renders shorter than the logos beside it */
.logos img.wide{max-width:240px}
.logos img:hover{filter:none;opacity:1}
.logos .txt{font-weight:600;font-size:15px;letter-spacing:-.01em;color:var(--fg-3)}
@media (max-width:620px){.logos{gap:20px 28px}.logos img{height:22px}.logos img.tall{height:40px}}

/* ---------- feature rows ---------- */
.feat{display:flex;flex-direction:column;gap:12px}
.feat h3{font-size:18px;font-weight:600;letter-spacing:-.015em}
.feat p{font-size:15px;color:var(--fg-2);line-height:1.55}
.feat .iconbox{margin-bottom:2px}
.numlist{counter-reset:n;list-style:none;display:flex;flex-direction:column;gap:0}
.numlist li{counter-increment:n;display:grid;grid-template-columns:44px minmax(0,1fr);gap:14px;padding:22px 0;border-top:1px solid var(--line)}
.numlist li:last-child{border-bottom:1px solid var(--line)}
.numlist li::before{content:"0" counter(n);font-family:var(--mono);font-size:12px;color:var(--brand-deep);font-weight:500;padding-top:4px}
.numlist h3{font-size:18px;font-weight:600;letter-spacing:-.015em;margin-bottom:6px}
.numlist p{font-size:15px;color:var(--fg-2);line-height:1.55;max-width:64ch}
.numlist .ev{margin-top:10px;display:flex;flex-wrap:wrap;gap:6px}

/* ---------- trader thread diagram (tracking hero) ---------- */
.thread{display:grid;grid-template-columns:150px minmax(0,1fr) 150px;gap:18px;align-items:center}
.thread .col{display:flex;flex-direction:column;gap:8px}
.thread .col .lab{font-size:10.5px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--fg-3);margin-bottom:2px}
.thread .src,.thread .roll{display:flex;align-items:center;justify-content:space-between;gap:8px;height:34px;padding:0 12px;border-radius:9px;border:1px solid var(--line);background:#fff;font-size:12.5px;font-weight:500;color:var(--fg);position:relative;white-space:nowrap}
.thread .src::after{content:"";position:absolute;right:-18px;top:50%;width:18px;height:1px;background:var(--line);}
.thread .roll::before{content:"";position:absolute;left:-18px;top:50%;width:18px;height:1px;background:var(--line)}
.thread .src .dot{width:7px;height:7px;border-radius:50%;background:var(--fg-4)}
.thread .src.on .dot{background:var(--brand)}
.thread .roll .v{font-family:var(--mono);font-size:11px;color:var(--fg-3)}
.record{border:1px solid var(--line);border-radius:14px;background:#fff;box-shadow:var(--shadow-md);padding:18px 20px 16px;position:relative}
.record .hd{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:14px}
.record .hd .id{font-family:var(--mono);font-size:12px;color:var(--fg-2)}
.record .ctx{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-bottom:18px}
.record .ctx div{background:var(--subtle);border:1px solid var(--line-soft);border-radius:8px;padding:8px 10px}
.record .ctx .k{display:block;font-size:10px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--fg-3)}
.record .ctx .v{display:block;font-family:var(--mono);font-size:12px;color:var(--fg);margin-top:3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.timeline{position:relative;height:54px}
.timeline .rail{position:absolute;left:10px;right:10px;top:12px;height:2px;background:var(--line)}
.timeline .rail i{position:absolute;left:0;top:0;height:100%;width:100%;background:var(--brand);transform-origin:left;animation:grow 6s ease-in-out infinite}
.timeline .nodes{position:absolute;left:0;right:0;top:0;display:flex;justify-content:space-between}
.timeline .node{display:flex;flex-direction:column;align-items:center;gap:8px;width:20px}
.timeline .node b{width:12px;height:12px;border-radius:50%;background:#fff;border:2px solid var(--brand);display:block;margin-top:7px}
.timeline .node:last-child b{background:var(--brand);border-color:var(--brand-ink)}
.timeline .node span{font-size:10.5px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--fg-3);white-space:nowrap}
.timeline .node:last-child span{color:var(--brand-deep)}
.timeline .cursor{position:absolute;top:3px;left:10px;width:20px;height:20px;border-radius:50%;background:var(--brand);border:2px solid var(--brand-ink);box-shadow:0 0 0 6px rgba(245,158,11,.18);animation:travel 6s ease-in-out infinite;margin-left:-10px}
@keyframes travel{0%{left:10px}80%{left:calc(100% - 10px)}100%{left:calc(100% - 10px)}}
@keyframes grow{0%{transform:scaleX(0)}80%{transform:scaleX(1)}100%{transform:scaleX(1)}}
.record .ft{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:16px;padding-top:12px;border-top:1px solid var(--line-soft);font-size:12.5px;color:var(--fg-3);flex-wrap:wrap}
.record .ft b{color:var(--fg);font-weight:600}
@media (max-width:900px){
  .thread{grid-template-columns:1fr}
  .thread .col{flex-direction:row;flex-wrap:wrap}
  .thread .col .lab{width:100%}
  .thread .src,.thread .roll{height:30px;font-size:12px;padding:0 10px}
  .thread .src::after,.thread .roll::before{display:none}
  .record .ctx{grid-template-columns:repeat(2,minmax(0,1fr))}
  .timeline .node span{display:none}
  .timeline .node:first-child span,.timeline .node:last-child span{display:block}
}

/* ---------- self check ---------- */
.check{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.check .row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:16px;align-items:center;padding:16px 18px;border-top:1px solid var(--line-soft)}
.check .row:first-child{border-top:0}
.check .q{font-size:15px;line-height:1.5;color:var(--fg)}
.check .q small{display:block;font-size:12.5px;color:var(--fg-3);margin-top:2px}
.check .seg .o{padding:6px 14px;font-size:13px}
.check-result{margin-top:14px;padding:16px 18px;border-radius:var(--radius);border:1px solid var(--line);background:var(--subtle);display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:14.5px}
.check-result b{font-weight:600}
.check-result.warn{background:var(--brand-tint);border-color:var(--brand-line)}
.check-result.good{background:var(--green-bg);border-color:#bfe3cb}
@media (max-width:620px){.check .row{grid-template-columns:1fr}}

/* ---------- data table ---------- */
table.data{width:100%;border-collapse:collapse;font-size:13.5px;font-variant-numeric:tabular-nums}
table.data th{text-align:left;font-weight:500;font-size:12px;color:var(--fg-3);padding:10px 12px;background:var(--subtle);border-bottom:1px solid var(--line);white-space:nowrap}
table.data td{padding:10px 12px;border-bottom:1px solid var(--line-soft);white-space:nowrap}
table.data tr:last-child td{border-bottom:0}
table.data td.r,table.data th.r{text-align:right}
table.data td.name{font-weight:600}
table.data .s2{display:block;font-size:11.5px;color:var(--fg-3);font-weight:400}

/* ---------- form ---------- */
.form{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form .full{grid-column:1/-1}
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-size:13px;font-weight:500;color:var(--fg)}
.field input,.field select,.field textarea{height:42px;border:1px solid var(--line);border-radius:9px;background:#fff;padding:0 12px;font:inherit;font-size:14px;color:var(--fg);width:100%}
.field textarea{height:auto;min-height:96px;padding:10px 12px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(245,158,11,.18)}
.form-note{font-size:12.5px;color:var(--fg-3);line-height:1.5}
.form-done{display:none;padding:22px;border-radius:var(--radius);background:var(--green-bg);border:1px solid #bfe3cb;color:var(--green);font-size:15px;line-height:1.5}
.form-done.show{display:block}
@media (max-width:620px){.form{grid-template-columns:1fr}}
.cta-panel{background:var(--ink);color:var(--ink-fg);border-radius:20px;padding:44px 40px;display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:44px;align-items:start}
.cta-panel .field label{color:var(--ink-fg)}
.cta-panel .field input,.cta-panel .field select,.cta-panel .field textarea{background:var(--ink-2);border-color:var(--ink-line);color:var(--ink-fg)}
.cta-panel .form-note{color:var(--ink-fg-2)}
.cta-panel .lede{color:var(--ink-fg-2)}
.cta-panel .eyebrow{color:var(--ink-fg-2)}
.cta-panel .kv{display:flex;flex-direction:column;gap:12px;margin-top:22px}
.cta-panel .kv div{display:flex;gap:12px;align-items:flex-start;font-size:14.5px;color:var(--ink-fg-2);line-height:1.5}
.cta-panel .kv b{color:var(--ink-fg);font-weight:600}
.cta-panel .kv i{font-style:normal;font-family:var(--mono);font-size:11px;color:var(--brand);padding-top:5px;width:22px;flex-shrink:0}
@media (max-width:900px){.cta-panel{grid-template-columns:1fr;padding:30px 22px;gap:28px}}

/* ---------- footer ---------- */
.footer{border-top:1px solid var(--line);background:var(--bg);padding-block:44px 30px;font-size:14px;color:var(--fg-3)}
.footer-grid{display:grid;grid-template-columns:minmax(0,2fr) repeat(3,minmax(0,1fr));gap:32px}
.footer h4{font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--fg-2);margin-bottom:12px}
.footer ul{list-style:none;display:flex;flex-direction:column;gap:8px}
.footer a:hover{color:var(--fg)}
.footer .bottom{margin-top:36px;padding-top:18px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:12.5px}
@media (max-width:760px){.footer-grid{grid-template-columns:1fr 1fr}}

/* ---------- popout dialog ---------- */
dialog.pop{border:0;padding:0;background:transparent;max-width:none;max-height:none;width:100vw;height:100vh;height:100dvh;overflow:hidden}
dialog.pop::backdrop{background:rgba(10,10,12,.62);backdrop-filter:blur(4px)}
.pop-inner{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:24px}
.pop-box{background:#fff;border-radius:16px;box-shadow:var(--shadow-lg);overflow:hidden;display:flex;flex-direction:column;max-width:100%;max-height:100%}
.pop-head{height:50px;display:flex;align-items:center;gap:12px;padding:0 10px 0 16px;border-bottom:1px solid var(--line);font-size:13.5px;flex-shrink:0}
.pop-head b{font-weight:600}
.pop-head .s{color:#c4c4c8}
.pop-head .end{margin-left:auto;display:flex;align-items:center;gap:6px}
.pop-head .ib{width:34px;height:34px;border-radius:8px;display:inline-flex;align-items:center;justify-content:center;color:var(--fg-2)}
.pop-head .ib:hover{background:var(--muted);color:var(--fg)}
.pop-head .ib svg{width:17px;height:17px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.pop-stage{position:relative;background:var(--bg);overflow:hidden;flex-shrink:0}
.pop-stage img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;display:block}
.pop-stage iframe{position:absolute;left:0;top:0;width:1440px;height:810px;border:0;transform-origin:0 0;background:var(--bg);opacity:0;transition:opacity .2s}
.pop-stage iframe.ready{opacity:1}
.pop-foot{padding:12px 16px;border-top:1px solid var(--line);font-size:13px;color:var(--fg-2);display:flex;align-items:center;gap:14px;flex-shrink:0;line-height:1.45}
.pop-foot .tag{flex-shrink:0}
.pop-foot p{flex:1;min-width:0}
@media (max-width:760px){
  .pop-inner{padding:0}
  .pop-box{border-radius:0;width:100%;height:100%}
  .pop-stage{flex:1;overflow:auto;-webkit-overflow-scrolling:touch}
  .pop-stage img{position:static;width:1440px;max-width:none;height:auto}
  .pop-stage.fit img{width:100%}
  .pop-stage iframe{display:none}
  .pop-foot{display:none}
}

/* ---------- about ---------- */
.team{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
@media (max-width:980px){.team{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:480px){.team{grid-template-columns:1fr}}
.person{display:flex;flex-direction:column;gap:14px}
.person .ph{aspect-ratio:4/5;border-radius:14px;overflow:hidden;background:linear-gradient(180deg,#ececee,#dcdcdf);border:1px solid var(--line)}
.person .ph img{width:100%;height:100%;object-fit:cover;object-position:50% 12%}
.person .nm{font-size:17px;font-weight:600;letter-spacing:-.015em}
.person .rl{font-size:13px;color:var(--fg-3);margin-top:2px}
.person p{font-size:14px;color:var(--fg-2);line-height:1.55}
.letter{font-family:var(--serif);font-size:clamp(19px,1.7vw,22px);line-height:1.5;color:var(--fg);max-width:640px}
.letter p{margin-bottom:1.1em}
.letter p:last-child{margin-bottom:0}
.letter .lead{font-size:1.35em;font-style:italic;line-height:1.35;color:var(--fg);margin-bottom:1em;text-wrap:balance}
.letter .sig{font-family:var(--sans);font-size:14px;color:var(--fg-3);margin-top:22px}
.letter .sig b{display:block;color:var(--fg);font-weight:600;font-size:15px}
.portrait{margin-top:28px;max-width:360px;aspect-ratio:1;border-radius:14px;overflow:hidden;border:1px solid var(--line);background:var(--muted)}
.portrait img{width:100%;height:100%;object-fit:cover}
.pull{font-family:var(--serif);font-size:clamp(24px,2.6vw,32px);font-style:italic;line-height:1.3;letter-spacing:-.01em;text-wrap:balance;color:var(--fg);max-width:22ch}
.milestones{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.milestones>div{padding:22px 22px;border-left:1px solid var(--line)}
.milestones>div:first-child{border-left:0}
.milestones .when{font-family:var(--mono);font-size:12px;color:var(--brand-deep);font-weight:500}
.milestones h3{font-size:17px;font-weight:600;letter-spacing:-.012em;margin:8px 0 6px}
.milestones p{font-size:14px;color:var(--fg-2);line-height:1.5}
@media (max-width:760px){.milestones{grid-template-columns:1fr}.milestones>div{border-left:0;border-top:1px solid var(--line)}.milestones>div:first-child{border-top:0}}

/* ---------- journal ---------- */
.posts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
@media (max-width:760px){.posts{grid-template-columns:1fr}}
.post{display:flex;flex-direction:column;gap:14px;padding:26px 26px 24px;transition:transform .15s,box-shadow .15s}
.post:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}
.post .meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--fg-3)}
.post h3{font-family:var(--serif);font-size:clamp(24px,2.4vw,30px);font-weight:500;line-height:1.15;letter-spacing:-.012em;text-wrap:balance}
.post p{font-size:15px;color:var(--fg-2);line-height:1.55}
.post .more{margin-top:auto;display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;color:var(--fg)}
.post .more svg{width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.post.feature{grid-column:1/-1;display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:32px;background:var(--ink);color:var(--ink-fg);border-color:var(--ink)}
.post.feature .meta,.post.feature p{color:var(--ink-fg-2)}
.post.feature h3{font-size:clamp(28px,3.2vw,40px);color:#fff}
.post.feature .more{color:#fff}
.post.feature .side{border-left:1px solid var(--ink-line);padding-left:28px;display:flex;flex-direction:column;gap:10px;font-size:14px;color:var(--ink-fg-2)}
.post.feature .side b{color:var(--ink-fg);font-weight:600;display:block;font-size:12px;letter-spacing:.08em;text-transform:uppercase;margin-bottom:4px}
.post.feature .side .stages{display:flex;gap:6px;flex-wrap:wrap}
.post.feature .side .stages span{font-family:var(--mono);font-size:12px;padding:5px 9px;border:1px solid var(--ink-line);border-radius:7px;color:var(--ink-fg)}
@media (max-width:760px){.post.feature{grid-template-columns:1fr}.post.feature .side{border-left:0;border-top:1px solid var(--ink-line);padding-left:0;padding-top:18px}}

/* article */
.article-head{padding-block:56px 36px;border-bottom:1px solid var(--line)}
.article-head .meta{display:flex;flex-wrap:wrap;gap:8px 14px;align-items:center;font-size:13px;color:var(--fg-3);margin-bottom:22px}
.article-head h1{font-family:var(--serif);font-size:clamp(34px,4.6vw,54px);font-weight:500;line-height:1.08;letter-spacing:-.018em;text-wrap:balance;max-width:20ch}
.article-head .standfirst{font-family:var(--serif);font-size:clamp(19px,1.8vw,23px);line-height:1.45;color:var(--fg-2);max-width:60ch;margin-top:20px;text-wrap:pretty}
.article-body{padding-block:44px 72px;display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:64px;align-items:start}
@media (max-width:980px){.article-body{grid-template-columns:1fr;gap:32px}}
.prose{font-family:var(--serif);font-size:19px;line-height:1.6;color:var(--fg);max-width:68ch}
.prose>*+*{margin-top:1.15em}
.prose h2{font-family:var(--sans);font-size:clamp(24px,2.2vw,29px);font-weight:700;letter-spacing:-.025em;line-height:1.15;margin-top:2.2em;text-wrap:balance}
.prose h3{font-family:var(--sans);font-size:20px;font-weight:600;letter-spacing:-.015em;line-height:1.3;margin-top:1.8em}
.prose h4{font-family:var(--sans);font-size:16px;font-weight:600;letter-spacing:-.01em;margin-top:1.5em}
.prose p{text-wrap:pretty}
.prose ul,.prose ol{padding-left:1.35em}
.prose li{margin-top:.45em}
.prose li>ul,.prose li>ol{margin-top:.35em}
.prose blockquote{border-left:3px solid var(--brand);padding:6px 0 6px 22px;font-style:italic;color:var(--fg-2);font-size:1.05em}
.prose strong{font-weight:600}
.prose code{font-family:var(--mono);font-size:.78em;background:var(--muted);border:1px solid var(--line);border-radius:5px;padding:1px 6px;font-style:normal}
.prose hr{border:0;border-top:1px solid var(--line);margin-block:2.2em}
.prose a{text-decoration:underline;text-decoration-color:var(--brand-line);text-underline-offset:3px}
.prose a:hover{text-decoration-color:var(--brand)}
.prose .tablewrap{margin-top:1.3em}
.prose table{width:100%;border-collapse:collapse;font-family:var(--sans);font-size:14px;line-height:1.45;font-variant-numeric:tabular-nums}
.prose thead:not(:has(th:not(:empty))){display:none}
.prose th{text-align:left;font-weight:600;font-size:12px;letter-spacing:.04em;text-transform:uppercase;color:var(--fg-3);padding:10px 12px;background:var(--subtle);border-bottom:1px solid var(--line);vertical-align:bottom}
.prose td{padding:10px 12px;border-bottom:1px solid var(--line-soft);vertical-align:top;color:var(--fg-2)}
.prose td:first-child{color:var(--fg);font-weight:500}
.prose .formula{font-family:var(--mono);font-size:.8em;background:var(--subtle);border:1px solid var(--line);border-radius:10px;padding:14px 18px;overflow-x:auto;font-style:normal;line-height:1.7}
.prose .callout{font-family:var(--sans);font-size:15.5px;line-height:1.55;background:var(--brand-tint);border:1px solid var(--brand-line);border-radius:12px;padding:18px 20px;color:var(--fg)}
.prose .callout b{font-weight:600}
.prose .note{font-family:var(--sans);font-size:14px;line-height:1.55;color:var(--fg-3);border:1px solid var(--line);border-radius:12px;padding:14px 18px}
.prose .kicker{font-family:var(--sans);font-size:11.5px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--brand-deep);margin-top:2.6em}
.prose .kicker + h2{margin-top:.4em}
.aside{position:sticky;top:84px;display:flex;flex-direction:column;gap:18px}
.aside .box{border:1px solid var(--line);border-radius:12px;padding:18px 18px;font-size:13.5px;color:var(--fg-2);line-height:1.5;background:#fff}
.aside .box b{display:block;font-size:11.5px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--fg-3);margin-bottom:10px}
.aside .box p{margin:0}
.aside .toc{list-style:none;display:flex;flex-direction:column;gap:6px}
.aside .toc a{display:block;color:var(--fg-2);font-size:13.5px;line-height:1.4}
.aside .toc a:hover{color:var(--fg)}
.aside .box.brand{background:var(--brand-tint);border-color:var(--brand-line);color:var(--fg)}
.aside .box.brand .btn{margin-top:14px}
.article-next{border-top:1px solid var(--line);padding-block:40px}
.article-next .posts{margin-top:20px}


/* ---------- AI assistant demo panel (the one section that changed on desktop) ---------- */
.ai-frame{background:var(--bg)}
.ai-stage{position:relative;overflow:hidden;background:var(--bg);padding:26px 22px 40px;min-height:560px;display:flex;flex-direction:column;justify-content:center}
.ai-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:0 0;filter:blur(2.5px);transform:scale(1.02)}
.ai-stage::before{content:"";position:absolute;inset:0;background:rgba(10,10,12,.34)}
.ai-modal{position:relative;z-index:1;width:min(560px,100%);margin:0 auto;background:#fff;border-radius:16px;box-shadow:var(--shadow-lg);display:flex;flex-direction:column;overflow:hidden;text-align:left;color:var(--fg)}
.ai-head{display:flex;align-items:center;gap:10px;padding:10px 12px 10px 14px;border-bottom:1px solid var(--line)}
.ai-head .iconbox{width:28px;height:28px;border-radius:8px}
.ai-head .iconbox svg{width:14px;height:14px}
.ai-ttl{display:flex;flex-direction:column;line-height:1.2;flex:1;min-width:0}
.ai-ttl b{font-size:13px;font-weight:600}
.ai-ttl span{font-size:11px;color:var(--fg-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ai-seg{padding:2px;border-radius:8px;gap:1px}
.ai-seg .o{padding:4px 9px;font-size:11.5px;border-radius:6px}
.ai-scope{font-size:11.5px;font-weight:500;color:var(--fg);border:1px solid var(--line);border-radius:7px;padding:5px 22px 5px 9px;position:relative;white-space:nowrap;background:#fff}
.ai-scope::after{content:"";position:absolute;right:8px;top:50%;width:6px;height:6px;border-right:1.5px solid var(--fg-3);border-bottom:1.5px solid var(--fg-3);transform:translateY(-70%) rotate(45deg)}
.ai-thread{padding:14px 16px 4px;display:flex;flex-direction:column;gap:12px;font-size:13px;line-height:1.5;color:var(--fg)}
.msg.user{align-self:flex-end;max-width:88%;background:var(--fg);color:#fff;border-radius:12px 12px 4px 12px;padding:8px 12px;font-weight:500}
.msg.ai{display:grid;grid-template-columns:24px minmax(0,1fr);gap:10px;align-items:start}
.msg.ai .av{width:24px;height:24px;border-radius:7px;background:var(--brand);color:var(--brand-ink);display:flex;align-items:center;justify-content:center;margin-top:1px}
.msg.ai .av svg{width:13px;height:13px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.msg.ai .body{min-width:0}
.msg.ai .body p{margin:0 0 8px}
.msg.ai .body p:last-child{margin-bottom:0}
.msg.ai .body b{font-weight:600}
.ai-table{overflow-x:auto;margin:2px 0 10px;border:1px solid var(--line);border-radius:9px}
.ai-table table{width:100%;border-collapse:collapse;font-size:12px;font-variant-numeric:tabular-nums;line-height:1.35}
.ai-table th{text-align:left;font-weight:500;color:var(--fg-3);font-size:11px;padding:6px 9px;background:var(--subtle);border-bottom:1px solid var(--line);white-space:nowrap}
.ai-table td{padding:6px 9px;border-bottom:1px solid var(--line-soft);white-space:nowrap;color:var(--fg)}
.ai-table tr:last-child td{border-bottom:0}
.ai-table td.r,.ai-table th.r{text-align:right}
.ai-table td.name{font-weight:500}
.ai-table tr.tot td{font-weight:600;background:var(--subtle)}
.ai-table .pos{color:var(--green)} .ai-table .neg{color:var(--red)}
.ai-src{font-size:11px;color:var(--fg-3);margin-top:8px;display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.ai-src::before{content:"";width:12px;height:12px;flex-shrink:0;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2371717a' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cellipse cx='12' cy='5' rx='9' ry='3'/%3E%3Cpath d='M3 5v14a9 3 0 0 0 18 0V5'/%3E%3Cpath d='M3 12a9 3 0 0 0 18 0'/%3E%3C/svg%3E") center/12px no-repeat}
.ai-chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.ai-chips span{display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:999px;border:1px solid var(--line);font-size:11.5px;font-weight:500;color:var(--fg-2);background:#fff}
.ai-foot{padding:10px 14px 14px}
.ai-input{display:flex;align-items:center;gap:8px;height:38px;border:1px solid var(--line);border-radius:10px;padding:0 6px 0 12px;font-size:12.5px;color:var(--fg-4);background:#fff}
.ai-input .spark{width:15px;height:15px;color:var(--brand);flex-shrink:0}
.ai-input .send{margin-left:auto;width:26px;height:26px;border-radius:7px;background:var(--brand);border:1px solid var(--brand-ink);display:flex;align-items:center;justify-content:center;color:var(--brand-ink);flex-shrink:0}
.ai-input .send svg{width:12px;height:12px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.ai-typing{display:flex;align-items:center;gap:10px;color:var(--fg-3);font-size:12.5px;min-height:24px}
.ai-typing i{display:inline-flex;gap:4px}
.ai-typing i::before,.ai-typing i::after,.ai-typing i span{content:"";width:6px;height:6px;border-radius:50%;background:var(--fg-4);display:block;animation:aidot 1s infinite ease-in-out}
.ai-typing i::after{animation-delay:.15s}.ai-typing i span{animation-delay:.3s;order:1}
@keyframes aidot{0%,80%,100%{opacity:.35;transform:translateY(0)}40%{opacity:1;transform:translateY(-2px)}}
.msg.ai.in{animation:aiin .35s ease-out}
@keyframes aiin{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}
.dark .ai-frame .tag.sample{z-index:2}

/* ---------- misc helpers ---------- */
.divider{height:1px;background:var(--line)}
.mt8{margin-top:8px}.mt12{margin-top:12px}.mt16{margin-top:16px}.mt20{margin-top:20px}.mt24{margin-top:24px}.mt32{margin-top:32px}.mt40{margin-top:40px}.mt56{margin-top:56px}
.row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.between{justify-content:space-between}
.center{text-align:center}
.maxw{max-width:760px}
.ev{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:500;color:var(--fg-2);border:1px solid var(--line);border-radius:999px;height:26px;padding:0 10px;background:#fff;cursor:zoom-in}
.ev:hover{border-color:var(--fg);color:var(--fg)}
.ev svg{width:12px;height:12px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.dark .ev{background:var(--ink-2);border-color:var(--ink-line);color:var(--ink-fg)}
.dark .ev:hover{border-color:var(--brand)}
.wa-note{display:flex;align-items:center;gap:12px;padding:14px 16px;border-radius:12px;background:#e9f8ef;border:1px solid #bfe3cb;font-size:14px;color:#0f5a2e;line-height:1.45}
.wa-note b{font-size:26px;font-weight:700;letter-spacing:-.03em;color:#137a3f;line-height:1;font-variant-numeric:tabular-nums}
.wa-note .vs{font-size:12px;color:#3f7f57}
@media (max-width:760px){:root{--sec:64px;--gutter:16px}.sec-head{margin-bottom:28px}}

/* =====================================================================
   Mobile composition. Everything in this file applies at 760px and below,
   except the three min-width fixes at the top, which only stop grids from
   overflowing and have no visual effect on desktop.
   ===================================================================== */
.m-only{display:none}

/* ---- overflow fixes at the existing tablet breakpoints (bug fixes only) ---- */
@media (max-width:980px){.article-body{grid-template-columns:minmax(0,1fr)}}
@media (max-width:900px){
  .split,.split.rev,.split.even,.ask{grid-template-columns:minmax(0,1fr)}
  .split>*,.ask>*,.article-body>*{min-width:0}
  .sticky-col{position:static!important}
}
@media (min-width:901px){.sticky-col{position:sticky;top:84px}}

@media (max-width:760px){
  /* ---------- foundations ---------- */
  :root{--sec:48px;--gutter:16px}
  html,body{overflow-x:clip}
  .d-only{display:none!important}
  .m-only{display:block}
  span.m-only{display:inline}
  .sec-head{margin-bottom:22px;gap:10px}
  .display{font-size:34px;letter-spacing:-.03em;line-height:1.06}
  h1.h1{font-size:32px}
  .h2{font-size:26px;line-height:1.12}
  .h3{font-size:19px}
  .lede{font-size:16px;line-height:1.5}
  .small{font-size:14.5px}
  .cap{font-size:13px}
  .eyebrow{font-size:12px;letter-spacing:.12em}
  .tag{font-size:10.5px;height:21px;padding:0 7px}
  .pill{font-size:12px;height:24px}
  .kbd{font-size:11px}
  /* tap targets */
  .btn{height:44px;padding:0 18px;font-size:15px}
  .btn.sm{height:40px;padding:0 14px;font-size:14px}
  .btn.lg{height:48px}
  .nav-burger{width:44px;height:44px}
  .ev{height:38px;font-size:13.5px;padding:0 13px}
  .seg .o{min-height:40px;display:inline-flex;align-items:center;justify-content:center}
  .qs button{min-height:46px;font-size:14.5px}
  .footer ul{gap:0}
  .footer li a{display:block;padding:9px 0}
  .footer h4{margin-bottom:6px}
  .footer-grid{gap:22px 20px}
  .thumb .t{font-size:15px}
  .thumb .d{font-size:13.5px}

  /* ---------- nav ---------- */
  .nav-inner{height:56px}
  .nav .logo-link{padding:10px 0}
  .frame-bar>span:not(.end){min-width:0;overflow:hidden;text-overflow:ellipsis}
  .nav-panel.open{box-shadow:0 20px 40px -20px rgba(0,0,0,.25)}

  /* ---------- product frames on a phone ---------- */
  .frame{box-shadow:var(--shadow)}
  .frame-bar{height:34px}
  /* thumbnails show the whole screen in proportion; the viewer does the zooming */
  .shot.crop{aspect-ratio:16/9}
  .shot.crop img{position:static;width:100%;height:100%;max-width:100%;left:auto;top:auto;object-fit:cover}
  .shot .open{opacity:1;transform:none;height:36px;font-size:13px;padding:0 12px;right:10px;bottom:10px}
  .shot .sample{left:10px;bottom:10px}
  .frame.clickable{cursor:pointer}

  /* ---------- hero ---------- */
  .hero{padding-block:28px 24px}
  .hero-copy{gap:16px}
  .hero-copy .cta-row .btn{flex:1 1 auto}
  .hero-meta{font-size:13px;gap:4px 14px}
  .hero-visual{margin-top:8px;margin-bottom:0}
  .hero-visual .frame{box-shadow:var(--shadow-md)}
  .hero-visual .aibar.float,.hero-visual .float-card.tr{display:none}
  .hero-ground{display:none}
  .hero-note{margin-top:10px;font-size:13px;color:var(--fg-3);line-height:1.45}
  .hero-note b{color:var(--fg);font-weight:600}

  /* ---------- logos: one scrolling row ---------- */
  .section.tight{padding-block:26px}
  .logos{flex-wrap:nowrap;justify-content:flex-start;gap:30px;overflow-x:auto;padding:4px 0 8px;scrollbar-width:none;-webkit-mask-image:linear-gradient(to right,transparent,#000 6%,#000 94%,transparent);mask-image:linear-gradient(to right,transparent,#000 6%,#000 94%,transparent)}
  .logos::-webkit-scrollbar{display:none}
  .logos img{height:22px;max-width:none;flex-shrink:0}
  .logos img.tall{height:34px}
  .logos .txt{flex-shrink:0;font-size:14px}

  /* ---------- rooms: switch and strip first, checklists collapsed ---------- */
  #rooms .wrap{display:flex;flex-direction:column}
  #rooms .sec-head{order:0}
  #rooms #explorer{order:1}
  #rooms .grid.g2{order:2;margin:14px 0 0!important;gap:10px}
  #rooms .cap{order:3}
  .explorer{border:0;box-shadow:none;background:transparent;overflow:visible;border-radius:0}
  .mx-head{display:flex;flex-direction:column;gap:10px}
  .mx-who{font-size:14px;color:var(--fg-2);display:flex;align-items:center;gap:8px}
  .mx-strip{display:flex;gap:12px;overflow-x:auto;scroll-snap-type:x mandatory;padding:14px 0 6px;margin:0 calc(-1 * var(--gutter));padding-inline:var(--gutter);scrollbar-width:none;-webkit-overflow-scrolling:touch}
  .mx-strip::-webkit-scrollbar{display:none}
  .mx-card{flex:0 0 88%;max-width:380px;scroll-snap-align:start;display:flex;flex-direction:column;gap:8px}
  .mx-card .frame{cursor:pointer}
  .mx-card .t{font-size:15px;font-weight:600;letter-spacing:-.01em}
  .mx-card .d{font-size:13.5px;color:var(--fg-3);line-height:1.45}
  .mx-card .n{font-family:var(--mono);font-size:11px;color:var(--fg-4)}
  .mx-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:6px}
  .mx-dots{display:flex;gap:5px}
  .mx-dots i{width:6px;height:6px;border-radius:50%;background:var(--line);display:block}
  .mx-dots i.on{background:var(--fg)}

  /* ---------- accordions ---------- */
  .acc>h3{display:flex;align-items:center;justify-content:space-between;gap:12px;cursor:pointer;margin:0;font-size:16.5px;min-height:44px;line-height:1.3}
  .acc>h3::after{content:"";width:18px;height:18px;flex-shrink:0;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2371717a' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E") center/18px no-repeat;transition:transform .2s}
  .acc.open>h3::after{transform:rotate(180deg)}
  .acc>.ac{display:none}
  .acc.open>.ac{display:block}
  .acc.open>.row.ac,.acc.open>.proof.ac,.acc.open>.cta-row.ac{display:flex}
  .acc.open>ul.ac{display:flex}
  .card.acc{padding:6px 18px}
  .card.acc.open{padding-bottom:18px}
  .card.acc>.k{padding-top:12px;margin-bottom:-6px}
  .card.acc>.iconbox{display:none}
  .card.acc>.row.between{padding-top:12px;margin-bottom:-4px}
  .engine{gap:10px}
  .engine p{font-size:14.5px}
  .grid.g3,.grid.g4{gap:10px}
  .feat{gap:10px}
  .feat p{font-size:14.5px}

  /* ---------- comparison: table stakes as a line, differences as cards ---------- */
  .compare{border:0;background:transparent;overflow:visible}
  .compare.tablewrap{overflow:visible}
  .compare table,.compare tbody{display:block;width:100%}
  .compare thead{display:none}
  .compare tr{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px 12px;margin-bottom:10px;box-shadow:var(--shadow)}
  .compare tr.ts{display:none}
  .compare td{display:block;padding:0;border:0;width:auto!important;white-space:normal}
  .compare td:first-child{font-size:16px;font-weight:600;color:var(--fg);margin-bottom:8px}
  .compare td[data-l]::before{content:attr(data-l);display:block;font-size:10.5px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--fg-3);margin-bottom:2px}
  .compare td.hi{background:transparent;padding-top:10px;color:var(--fg)}
  .compare td.hi[data-l]::before{color:var(--brand-deep)}
  .compare .n{color:var(--fg-2)}
  .compare.scoreboard tr{padding:14px 16px}
  .compare.scoreboard td:first-child{font-size:13px;letter-spacing:.06em;text-transform:uppercase;color:var(--brand-deep);margin-bottom:6px}
  .stakes{font-size:15px;line-height:1.55;color:var(--fg-2);background:var(--subtle);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;margin-bottom:12px}
  .stakes b{color:var(--fg);font-weight:600}

  /* ---------- ask the data ---------- */
  .ask{gap:22px}

  /* ---------- onboarding path: a vertical stepper with one image ---------- */
  .path{display:flex;flex-direction:column;gap:0;position:relative}
  .path::before{display:none}
  .path .thumb{display:grid;grid-template-columns:26px minmax(0,1fr);gap:4px 12px;padding:12px 0;border-top:1px solid var(--line)}
  .path .thumb:first-child{border-top:0;padding-top:0}
  .path .step{grid-column:1/-1;display:grid;grid-template-columns:26px minmax(0,1fr);gap:0 12px;align-items:center;font-weight:600;font-size:15px}
  .path .step i{width:26px;height:26px;font-size:11px}
  .path .thumb .t{display:none}
  .path .thumb .d{grid-column:2}
  .path .thumb .frame{display:none;grid-column:2;margin-top:10px}
  .path .thumb:last-child .frame{display:block}

  /* ---------- AI panel ---------- */
  .ai-stage{padding:14px 10px 34px;min-height:0;display:block}
  .ai-modal{width:100%}
  .ai-head{padding:10px 10px 10px 12px;gap:8px}
  .ai-seg{display:none}
  .ai-thread{padding:12px 12px 4px;font-size:13.5px}
  .ai-table table{font-size:12.5px}
  .ai-chips span{height:32px;font-size:12.5px}
  .ai-src{font-size:11.5px}
  .ask .row .ev{margin-top:0}

  /* ---------- tracking ---------- */
  .thread{gap:12px;margin-top:22px!important}
  .thread .col{gap:6px}
  .thread .src,.thread .roll{height:32px;font-size:12.5px}
  .record{padding:14px 14px 12px}
  .record .ctx{gap:8px;margin-bottom:14px}
  .record .ctx .k{font-size:10.5px}
  .record .ctx .v{white-space:normal;font-size:11.5px;line-height:1.35}
  .record .ft{display:grid;grid-template-columns:1fr 1fr;gap:6px 12px;font-size:12.5px}
  .timeline .node span{display:none}
  .timeline .node:first-child span,.timeline .node:last-child span{display:block}
  .cohort td:nth-child(3),.cohort th:nth-child(3){display:none}
  .cohort tbody tr:last-child{display:none}
  .cohort td,.cohort th{white-space:normal;padding:9px 8px}
  .cohort td:first-child{padding-left:12px}
  .cohort td:last-child,.cohort th:last-child{padding-right:12px}
  .check .row{padding:14px 14px}
  .check .q{font-size:15px}
  .numlist li{grid-template-columns:32px minmax(0,1fr);gap:10px;padding:16px 0}
  .numlist h3{font-size:17px}
  .numlist p{font-size:15px}

  /* ---------- about ---------- */
  .milestones>div{padding:16px 18px}
  .sticky-col{display:flex;flex-direction:column}
  .sticky-col .portrait{order:-1;margin:0 0 18px;max-width:160px;aspect-ratio:1}
  .letter{font-size:18px}
  .letter .lead{font-size:1.25em}
  .team{grid-template-columns:1fr;gap:0}
  .person{display:grid;grid-template-columns:84px minmax(0,1fr);gap:4px 14px;align-items:center;padding:14px 0;border-top:1px solid var(--line)}
  .person:first-child{border-top:0;padding-top:0}
  .person .ph{aspect-ratio:1;border-radius:12px;grid-row:1/3}
  .person .nm{font-size:16px}
  .person>p{grid-column:1/-1;display:none;margin-top:6px;font-size:14.5px}
  .person.open>p{display:block}
  .person .bio-btn{display:inline-flex;align-items:center;gap:6px;min-height:36px;font-size:13.5px;font-weight:500;color:var(--fg);padding:0;margin-top:2px}
  .person .bio-btn::after{content:"";width:14px;height:14px;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2371717a' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E") center/14px no-repeat;transition:transform .2s}
  .person.open .bio-btn::after{transform:rotate(180deg)}
  .grid.g2.nums{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
  .grid.g2.nums .card.pad{padding:16px 16px}
  .grid.g2.nums .h2{font-size:26px}
  .grid.g2.nums .small{font-size:13px}

  /* ---------- journal and articles ---------- */
  .post{padding:20px 18px}
  .post.feature{gap:18px}
  .article-head{padding-block:32px 24px}
  .article-head h1{font-size:34px}
  .article-head .standfirst{font-size:18px}
  .article-body{padding-block:24px 48px;gap:20px}
  .aside{display:contents}
  .aside .box.toc-box{order:-1}
  .aside .box.brand{order:2}
  .aside .box.toc-box b{display:flex;justify-content:space-between;align-items:center;margin:0;cursor:pointer;min-height:40px;font-size:12px}
  .aside .box.toc-box b::after{content:"";width:16px;height:16px;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2371717a' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E") center/16px no-repeat;transition:transform .2s}
  .aside .box.toc-box.open b::after{transform:rotate(180deg)}
  .aside .box.toc-box .toc{display:none;margin-top:10px}
  .aside .box.toc-box.open .toc{display:flex}
  .aside .toc a{padding:6px 0;font-size:14.5px}
  .prose{font-size:18px;line-height:1.55;order:1}
  .prose h2{font-size:24px}
  .prose h3{font-size:19px}
  .prose .formula{font-size:12.5px;padding:12px 14px}
  .prose table{font-size:13px}
  .prose th,.prose td{padding:8px 10px}
  .prose td:first-child,.prose th:first-child{position:sticky;left:0;background:#fff;box-shadow:1px 0 0 var(--line)}
  .prose th:first-child{background:var(--subtle)}
  .prose .callout,.prose .note{font-size:14.5px;padding:14px 16px}
  .prose code{font-size:.82em}
  .tablewrap.scrolls{-webkit-mask-image:linear-gradient(to right,#000 92%,transparent);mask-image:linear-gradient(to right,#000 92%,transparent)}
  .swipe-hint{font-family:var(--sans);font-size:12px;color:var(--fg-3);margin-top:6px;display:flex;align-items:center;gap:6px}

  /* ---------- panels and forms ---------- */
  .cta-panel{padding:26px 18px;border-radius:16px;gap:22px}
  .cta-panel .kv{gap:8px;margin-top:14px}
  .form{gap:12px}
  .field input,.field select,.field textarea{height:46px;font-size:16px}
  .field textarea{min-height:88px}
  .card.pad{padding:18px 18px}

  /* ---------- touch screen viewer ---------- */
  dialog.pop{width:100vw;height:100vh;height:100dvh}
  .pop-inner{padding:0;display:block}
  .pop-box{position:absolute;inset:0;border-radius:0;max-width:none;max-height:none;display:flex;flex-direction:column;background:#fff}
  .pop-head{height:auto;min-height:52px;padding:6px 8px 6px 14px;gap:8px;flex-wrap:wrap}
  .pop-head b{font-size:14px;flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .pop-head .s,.pop-head .tag.sample{display:none}
  .pop-head .end{gap:4px}
  .pop-head #pop-prev,.pop-head #pop-next{display:none}
  .pop-head .ib{width:44px;height:44px}
  .pop-head #pop-fit{display:none}
  .pop-zoom{display:inline-flex;background:var(--muted);border-radius:9px;padding:3px;gap:2px;margin-right:2px}
  .pop-zoom button{min-height:34px;padding:0 11px;border-radius:7px;font-size:12.5px;font-weight:500;color:var(--fg-3)}
  .pop-zoom button.on{background:#fff;color:var(--fg);box-shadow:0 1px 2px rgba(0,0,0,.08)}
  .pop-stage{flex:1;width:auto!important;height:auto!important;overflow:auto;-webkit-overflow-scrolling:touch;background:var(--bg);display:block;overscroll-behavior:contain}
  .pop-stage img{position:static;width:1440px;height:auto;max-width:none;display:block;object-fit:unset;cursor:zoom-out}
  .pop-stage.fit{display:flex;align-items:center;justify-content:center;overflow:hidden}
  .pop-stage.fit img{width:100%;cursor:zoom-in;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .pop-stage iframe{display:none}
  .pop-foot{display:flex;flex-direction:column;align-items:stretch;gap:8px;padding:10px 14px 12px;font-size:13.5px}
  .pop-foot p{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .pop-foot .tag{align-self:flex-start}
  .pop-nav{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:2px}
  .pop-nav .btn{height:42px;padding:0 16px}
  .pop-nav .cnt{font-family:var(--mono);font-size:12.5px;color:var(--fg-3)}
  .pop-foot .pop-hint{font-size:12px;color:var(--fg-3);display:flex;align-items:center;gap:6px}
  .pop-foot .pop-hint::before{content:"";width:14px;height:14px;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2371717a' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='3' y='7' width='18' height='10' rx='2'/%3E%3Cpath d='M12 17v4'/%3E%3C/svg%3E") center/14px no-repeat}
  @media (orientation:landscape){.pop-foot .pop-hint{display:none}}
}