/* ==========================================================================
   Meridian — open compatibility lab
   Paper, ink, hairlines. IBM Plex Sans 400/600, IBM Plex Mono 400.
   ========================================================================== */

@font-face{font-family:"Plex Sans";src:url("/fonts/plex-sans-400.woff2") format("woff2");font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:"Plex Sans";src:url("/fonts/plex-sans-600.woff2") format("woff2");font-weight:600;font-style:normal;font-display:swap}
@font-face{font-family:"Plex Mono";src:url("/fonts/plex-mono-400.woff2") format("woff2");font-weight:400;font-style:normal;font-display:swap}

:root{
  --paper:#f4f1ea;
  --paper-2:#ebe6db;
  --sheet:#fbfaf6;
  --ink:#0f172a;
  --ink-2:#2c3647;
  --ink-3:#566070;
  --rule:#d9d2c4;
  --rule-2:#bfb6a5;
  --grid:rgba(15,23,42,.07);
  --teal:#0f766e;
  --teal-2:#0b5f58;
  --teal-wash:#dcebe5;
  --sky:#0369a1;
  --sky-wash:#dbe8f0;
  --ochre:#8a5a00;
  --ochre-wash:#f0e4cb;
  --rust:#9a3412;
  --rust-wash:#f2dfd3;
  --slate-wash:#e4e1d9;
  --prussian:#0c3550;
  --sans:"Plex Sans","IBM Plex Sans",ui-sans-serif,"Segoe UI",system-ui,-apple-system,sans-serif;
  --mono:"Plex Mono","IBM Plex Mono",ui-monospace,"Cascadia Mono",Consolas,monospace;
  --wrap:1240px;
  --gutter:clamp(20px,4vw,48px);
  --rail:212px;
  --r:3px;
  --ease:cubic-bezier(.2,.7,.2,1);
  --ease-out:cubic-bezier(.16,1,.3,1);
}

/* ---------- 1. Base ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:92px}
body{margin:0;min-height:100vh;background:var(--paper);color:var(--ink-2);font-family:var(--sans);font-size:17px;line-height:1.62;font-synthesis:none;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}
img,video,iframe,svg{display:block;max-width:100%}
img,video{height:auto}
a{color:var(--teal);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:.22em;text-decoration-color:rgba(15,118,110,.35);transition:color .2s var(--ease),text-decoration-color .2s var(--ease)}
a:hover{color:var(--teal-2);text-decoration-color:currentColor}
h1,h2,h3,h4,h5,h6{margin:0;color:var(--ink);font-weight:600;line-height:1.2;letter-spacing:-.01em;text-wrap:balance}
p,ul,ol,dl,dd,figure,blockquote,table,pre{margin:0}
ul,ol{padding:0}
p{text-wrap:pretty}
strong,b{font-weight:600;color:var(--ink)}
em,i{font-style:normal}
code,kbd,samp,pre{font-family:var(--mono);font-size:.88em}
hr{border:0;border-top:1px solid var(--rule);margin:0}
table{border-collapse:collapse;width:100%}
button{font:inherit;color:inherit}
sup{font-size:.42em;line-height:0;vertical-align:super}
::selection{background:#0f766e;color:#f4f1ea}
:focus-visible{outline:2px solid var(--sky);outline-offset:3px}
[hidden]{display:none!important}
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip{position:absolute;left:12px;top:-64px;z-index:100;padding:12px 16px;background:var(--ink);color:var(--paper);font:600 14px/1 var(--sans);text-decoration:none;transition:top .2s var(--ease)}
.skip:focus{top:12px;color:var(--paper)}

/* ---------- 2. Layout primitives ---------- */
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter)}
.measure{max-width:46rem}
.split{display:grid;gap:clamp(28px,4.5vw,72px);align-items:start}
.split--7-5{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}
.split--5-7{grid-template-columns:minmax(0,5fr) minmax(0,7fr)}
.split--8-4{grid-template-columns:minmax(0,8fr) minmax(0,4fr)}
.split--center{align-items:center}

/* ---------- 3. Type ---------- */
.kicker{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin:0 0 22px;font:400 12px/1.4 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3)}
.kicker__no{display:inline-grid;place-items:center;min-width:30px;height:21px;padding:0 7px;border:1px solid var(--rule-2);border-radius:999px;color:var(--ink);font-size:11px;letter-spacing:.04em}
.h2{max-width:21ch;margin-bottom:24px;font-size:clamp(2rem,3.7vw,3.2rem);font-weight:400;line-height:1.04;letter-spacing:-.035em}
.h3{margin-bottom:12px;font-size:1.28rem;font-weight:600;line-height:1.25;letter-spacing:-.015em}
.lead{font-size:clamp(1.12rem,1.55vw,1.3rem);line-height:1.52;letter-spacing:-.006em;color:var(--ink-2)}
.lead + p{margin-top:1.1em}
.prose p + p{margin-top:1em}
.fineprint{font-size:.86rem;line-height:1.55;color:var(--ink-3)}
.caps{font:400 11px/1.4 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3)}
.i{width:16px;height:16px;flex:none}
.nobr{white-space:nowrap}

/* ---------- 4. Top line + masthead ---------- */
.topline{border-bottom:1px solid var(--rule);font:400 12px/1.4 var(--mono);letter-spacing:.03em;color:var(--ink-3)}
.topline__in{display:flex;justify-content:space-between;gap:16px;padding-block:9px}
.topline p{display:flex;align-items:center;gap:9px}
.topline a{color:var(--ink-2)}

.masthead{position:sticky;top:0;z-index:40;background:rgba(244,241,234,.92);-webkit-backdrop-filter:saturate(1.3) blur(12px);backdrop-filter:saturate(1.3) blur(12px);border-bottom:1px solid transparent;transition:border-color .3s var(--ease),background-color .3s var(--ease)}
.masthead.is-stuck{border-bottom-color:var(--rule);background:rgba(244,241,234,.84)}
.masthead__in{display:flex;align-items:center;gap:24px;height:72px;transition:height .35s var(--ease)}
.masthead.is-stuck .masthead__in{height:60px}
.brand{display:inline-flex;align-items:center;gap:11px;flex:none;color:var(--ink);text-decoration:none}
.brand:hover{color:var(--ink)}
.brand__mark{width:30px;height:30px;color:var(--ink)}
.brand:hover .brand__mark{animation:bearing 1.1s var(--ease-out)}
.brand__name{font-size:19px;font-weight:600;letter-spacing:-.025em}
.brand__tag{margin-left:2px;padding-left:11px;border-left:1px solid var(--rule-2);font:400 11px/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3)}
@keyframes bearing{0%{transform:rotate(0)}30%{transform:rotate(-16deg)}58%{transform:rotate(9deg)}80%{transform:rotate(-3deg)}100%{transform:rotate(0)}}
.nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav a{position:relative;padding:8px 12px;font-size:15px;color:var(--ink-2);text-decoration:none}
.nav a::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:1px;background:var(--ink);transform:scaleX(0);transform-origin:left;transition:transform .4s var(--ease-out)}
.nav a:hover,.nav a[aria-current="page"]{color:var(--ink)}
.nav a:hover::after,.nav a[aria-current="page"]::after{transform:scaleX(1)}
.nav a[aria-current="page"]::after{background:var(--teal)}
.masthead__cta{flex:none}
.nav-toggle{display:none;align-items:center;gap:10px;height:38px;padding:0 12px;border:1px solid var(--rule-2);border-radius:var(--r);background:transparent;font:400 11px/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;cursor:pointer}
.nav-toggle__bars{position:relative;width:16px;height:9px}
.nav-toggle__bars i{position:absolute;left:0;right:0;height:1px;background:var(--ink);transition:transform .3s var(--ease-out),top .3s var(--ease-out)}
.nav-toggle__bars i:first-child{top:0}
.nav-toggle__bars i:last-child{top:8px}
.masthead.is-open .nav-toggle__bars i:first-child{top:4px;transform:rotate(45deg)}
.masthead.is-open .nav-toggle__bars i:last-child{top:4px;transform:rotate(-45deg)}
.readbar{position:absolute;left:0;right:0;bottom:-1px;height:2px;overflow:hidden;pointer-events:none}
.readbar span{display:block;height:100%;background:var(--teal);transform:scaleX(0);transform-origin:0 50%}

/* ---------- 5. Buttons & links ---------- */
.btn{--h:48px;display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:var(--h);padding:0 20px;border:1px solid transparent;border-radius:var(--r);font:600 15px/1 var(--sans);letter-spacing:-.005em;text-decoration:none;white-space:nowrap;cursor:pointer;transition:background-color .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease)}
.btn .i{transition:transform .4s var(--ease-out)}
.btn--ink{background:var(--ink);color:var(--paper)}
.btn--ink:hover{background:var(--teal);color:#fff}
.btn--line{border-color:var(--ink);background:transparent;color:var(--ink)}
.btn--line:hover{background:var(--ink);color:var(--paper)}
.btn--sm{--h:38px;padding:0 15px;font-size:14px}
.btn--lg{--h:56px;padding:0 26px;font-size:16px}
.btn:hover .i--right{transform:translateX(3px)}
.btn:hover .i--down{transform:translateY(2px)}
.btn:active{transform:translateY(1px)}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin:30px 0 20px}
.arrow-link{display:inline-flex;align-items:center;gap:9px;margin-top:36px;padding-bottom:5px;border-bottom:1px solid var(--ink);font-size:15px;font-weight:600;color:var(--ink);text-decoration:none}
.arrow-link .i{width:14px;height:14px;transition:transform .4s var(--ease-out)}
.arrow-link:hover{color:var(--teal);border-color:var(--teal)}
.arrow-link:hover .i{transform:translateX(4px)}

/* ---------- 6. Small parts ---------- */
.pulse{position:relative;display:inline-block;flex:none;width:7px;height:7px;border-radius:50%;background:var(--teal)}
.pulse::after{content:"";position:absolute;inset:-4px;border:1px solid var(--teal);border-radius:50%;opacity:0;animation:pulse 2.6s var(--ease-out) infinite}
@keyframes pulse{0%{transform:scale(.4);opacity:.9}100%{transform:scale(1.7);opacity:0}}
.tag{display:inline-flex;align-items:center;gap:6px;padding:4px 8px;border:1px solid var(--rule-2);border-radius:2px;font:400 11px/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--ink-2);white-space:nowrap}
.tag--teal{border-color:var(--teal);color:var(--teal)}
.tag--sky{border-color:var(--sky);color:var(--sky)}
.tag--rust{border-color:var(--rust);color:var(--rust)}
.tag--ochre{border-color:var(--ochre);color:var(--ochre)}
.inline-list{display:flex;flex-wrap:wrap;gap:6px 18px;list-style:none;font:400 12px/1.5 var(--mono);color:var(--ink-3)}
.inline-list li{display:flex;align-items:center;gap:8px}
.inline-list li::before{content:"";width:5px;height:5px;background:var(--teal)}
.checklist{list-style:none;margin:24px 0 0;border-top:1px solid var(--rule)}
.checklist li{position:relative;padding:12px 0 12px 30px;border-bottom:1px solid var(--rule);font-size:15.5px;line-height:1.55}
.checklist li::before{content:"";position:absolute;left:3px;top:18px;width:12px;height:6px;border-left:1.5px solid var(--teal);border-bottom:1.5px solid var(--teal);transform:rotate(-45deg)}
.note{margin:28px 0;padding:2px 0 2px 18px;border-left:2px solid var(--teal);font-size:15px;line-height:1.6;color:var(--ink-3)}
.note b{display:block;margin-bottom:4px;font:400 11px/1.4 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--teal)}

/* ---------- 7. Gridlines (hairline column guides) ---------- */
.gridlines{position:absolute;top:0;bottom:0;left:0;right:0;z-index:-1;display:grid;grid-template-columns:repeat(6,1fr);width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter);pointer-events:none;-webkit-mask-image:linear-gradient(to bottom,#000 0%,#000 50%,transparent 100%);mask-image:linear-gradient(to bottom,#000 0%,#000 50%,transparent 100%)}
.gridlines i{border-left:1px solid var(--grid);transform-origin:top}
.gridlines i:last-child{border-right:1px solid var(--grid)}
.js .gridlines i{transform:scaleY(0);transition:transform 1.6s var(--ease-out)}
.js .is-in > .gridlines i{transform:scaleY(1)}
.gridlines i:nth-child(2){transition-delay:.07s}
.gridlines i:nth-child(3){transition-delay:.14s}
.gridlines i:nth-child(4){transition-delay:.21s}
.gridlines i:nth-child(5){transition-delay:.28s}
.gridlines i:nth-child(6){transition-delay:.35s}

/* ---------- 8. Hero ---------- */
.hero{position:relative;isolation:isolate;padding:clamp(52px,7.5vw,104px) 0 clamp(48px,6vw,88px)}
.hero__title{max-width:none;margin-bottom:clamp(32px,4.4vw,56px);font-size:clamp(2.5rem,5.8vw,4.9rem);font-weight:400;line-height:.98;letter-spacing:-.05em}
.hero__title sup a{color:var(--teal);text-decoration:none;font-family:var(--mono);letter-spacing:0;margin-left:.08em}
.hero__cols{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:clamp(32px,6vw,96px);align-items:start}
.hero__copy .lead{max-width:36rem}
.hero__fn{display:grid;grid-template-columns:16px 1fr;gap:6px;max-width:34rem;margin-top:22px;padding-top:14px;border-top:1px solid var(--rule);font-size:13.5px;line-height:1.55;color:var(--ink-3)}
.hero__fn span{font-family:var(--mono);color:var(--teal)}
.hero__plate{margin-top:clamp(48px,6vw,80px)}

/* Launcher mock-up (CSS only, no screenshots) */
.launcher__win{container:launcher/inline-size;overflow:hidden;border:1px solid var(--ink);background:#fbfaf7;box-shadow:10px 12px 0 rgba(15,23,42,.06);font-size:13.5px}
.launcher__bar{display:flex;align-items:center;gap:10px;height:36px;padding-left:12px;background:var(--ink);color:#e9e5dc;font-size:12.5px}
.launcher__app{display:flex;align-items:center;gap:8px;flex:1;min-width:0;white-space:nowrap}
.launcher__title{min-width:0;overflow:hidden;text-overflow:ellipsis}
.launcher__mark{width:16px;height:16px;flex:none;color:#e9e5dc}
.launcher__ver{font:400 11px/1 var(--mono);color:#a7b0bc}
.launcher__ctl{display:flex;align-self:stretch}
.launcher__ctl i{position:relative;width:38px}
.launcher__ctl i::before,.launcher__ctl i::after{content:"";position:absolute}
.launcher__ctl .min::before{left:50%;top:50%;width:10px;height:1px;margin-left:-5px;background:#e9e5dc}
.launcher__ctl .max::before{left:50%;top:13px;width:9px;height:9px;margin-left:-5px;border:1px solid #e9e5dc}
.launcher__ctl .cls::before,.launcher__ctl .cls::after{left:50%;top:50%;width:12px;height:1px;margin-left:-6px;background:#e9e5dc;transform:rotate(45deg)}
.launcher__ctl .cls::after{transform:rotate(-45deg)}
.launcher__tools{display:flex;flex-wrap:wrap;align-items:center;gap:4px;padding:8px 10px;border-bottom:1px solid var(--rule)}
.launcher__tab{padding:6px 9px;border-radius:2px;font:400 11px/1 var(--mono);letter-spacing:.05em;text-transform:uppercase;color:var(--ink-3);white-space:nowrap}
.launcher__tab.is-on{background:var(--ink);color:var(--paper)}
.launcher__add{margin-left:auto;padding:6px 9px;border:1px dashed var(--rule-2);border-radius:2px;font:400 11px/1 var(--mono);color:var(--ink-2);white-space:nowrap;text-decoration:none}
a.launcher__add:hover{border-color:var(--teal);color:var(--teal)}
/* Emulator menu bar: File → Install Firmware / Boot system software / Add games */
.launcher__menu{display:flex;align-items:flex-start;gap:2px;padding:6px 10px;border-bottom:1px solid var(--rule);background:var(--paper);font:400 11px/1 var(--mono);letter-spacing:.03em}
.launcher__file{padding:6px 8px;color:var(--ink-3);text-transform:uppercase;letter-spacing:.08em}
.launcher__items{display:flex;flex-wrap:wrap;gap:2px;min-width:0}
.launcher__menu a{padding:6px 9px;border-radius:2px;color:var(--ink);text-decoration:none;white-space:nowrap}
.launcher__menu a:hover{background:var(--ink);color:var(--paper)}
/* Firmware status + actions; the status text is never truncated */
.launcher__fw{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px 10px;padding:8px 12px;border-bottom:1px solid var(--rule);background:#f2f7f5;font:400 11px/1.4 var(--mono)}
.launcher__fwstat{display:flex;align-items:center;gap:8px;color:var(--ink);white-space:nowrap}
.launcher__fwlight{width:8px;height:8px;border-radius:50%;background:var(--teal);flex:none}
.launcher__fwbtns{display:flex;flex-wrap:wrap;gap:6px}
.launcher__fwbtns a{padding:6px 9px;border:1px solid var(--ink);border-radius:2px;background:var(--sheet);color:var(--ink);text-decoration:none;white-space:nowrap}
.launcher__fwbtns a:hover{background:var(--ink);color:var(--paper)}
/* Lab-style boot log */
.launcher__log{display:flex;flex-direction:column;gap:1px;padding:8px 12px;border-bottom:1px solid var(--rule);background:var(--ink);font:400 11px/1.65 var(--mono);color:#a7b0bc}
.launcher__log b{color:#86d1c2;font-weight:400}
.launcher__list{list-style:none}
.launcher__list li{display:grid;grid-template-columns:20px minmax(0,1fr) 62px 58px;align-items:center;gap:10px;height:36px;padding:0 12px;border-bottom:1px solid var(--rule)}
.launcher__list li.is-sel{background:rgba(15,118,110,.07);box-shadow:inset 3px 0 0 var(--teal)}
.launcher__sw{width:20px;height:20px;border:1px solid currentColor;background-image:repeating-linear-gradient(135deg,currentColor 0 1px,transparent 1px 5px)}
.sw--stable{color:var(--teal)}
.sw--beta{color:var(--sky)}
.sw--test{color:var(--ochre)}
.launcher__name{overflow:hidden;white-space:nowrap;text-overflow:ellipsis;font-weight:600;color:var(--ink)}
.launcher__state{font:400 11px/1 var(--mono);color:var(--ink-3);white-space:nowrap}
.launcher__boot{justify-self:end;padding:5px 8px;border:1px solid var(--ink);border-radius:2px;font:400 11px/1 var(--mono);color:var(--ink);text-decoration:none;white-space:nowrap;transition:background-color .2s var(--ease),color .2s var(--ease)}
.launcher__boot:hover{background:var(--ink);color:var(--paper)}
.launcher__boot.is-off{border-color:var(--rule-2);color:var(--ink-3)}
.launcher__list li.is-sel .launcher__boot{background:var(--ink);color:var(--paper)}
.launcher__status{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:9px 12px;background:var(--paper-2);font:400 11px/1.3 var(--mono);color:var(--ink-3)}
.launcher__cache{display:flex;align-items:center;gap:8px;white-space:nowrap}
.launcher__cache i{position:relative;display:block;width:64px;height:4px;overflow:hidden;background:var(--rule)}
.launcher__cache b{position:absolute;inset:0;background:var(--teal);transform-origin:left;animation:warm 9s var(--ease) infinite}
@keyframes warm{0%{transform:scaleX(.04)}70%,100%{transform:scaleX(1)}}
.js .launcher .launcher__list li{opacity:0;transform:translateX(-8px);transition:opacity .6s var(--ease-out),transform .6s var(--ease-out)}
.js .launcher.is-in .launcher__list li{opacity:1;transform:none}
.js .launcher .launcher__list li:nth-child(2){transition-delay:.08s}
.js .launcher .launcher__list li:nth-child(3){transition-delay:.16s}
.js .launcher .launcher__list li:nth-child(4){transition-delay:.24s}
.js .launcher .launcher__list li:nth-child(5){transition-delay:.32s}
.js .launcher .launcher__list li:nth-child(6){transition-delay:.40s}
.js .launcher .launcher__list li:nth-child(7){transition-delay:.48s}
.js .launcher .launcher__list li:nth-child(8){transition-delay:.56s}
.js .launcher .launcher__list li:nth-child(9){transition-delay:.64s}
.js .launcher .launcher__list li:nth-child(10){transition-delay:.72s}
/* Narrow window (two-column hero, phones): drop secondary tabs, stack firmware buttons */
@container launcher (max-width:600px){
  .launcher__ctl i{width:30px}
  .launcher__file{padding-inline:6px}
  .launcher__menu a{padding-inline:7px}
  .launcher__fwbtns{flex:1 1 100%}
  .launcher__fwbtns a{flex:1;text-align:center}
  .launcher__tab:nth-child(2),.launcher__tab:nth-child(3),.launcher__tab:nth-child(5){display:none}
}
@container launcher (max-width:420px){
  .launcher__ver,.launcher__tab:nth-child(4){display:none}
}
@container launcher (max-width:340px){
  .launcher__mark{display:none}
}

/* ---------- 9. Plates (figures) ---------- */
.plate{position:relative}
.plate::before,.plate::after{content:"";position:absolute;top:-9px;z-index:2;width:12px;height:12px;border:0 solid var(--ink);opacity:.5;pointer-events:none;transition:transform .5s var(--ease-out),opacity .3s var(--ease)}
.plate::before{left:-9px;border-width:1px 0 0 1px}
.plate::after{right:-9px;border-width:1px 1px 0 0}
.plate:hover::before{transform:translate(-3px,-3px);opacity:1}
.plate:hover::after{transform:translate(3px,-3px);opacity:1}
.plate--inset::before,.plate--inset::after{display:none}
.plate__frame{position:relative;min-width:0;overflow:hidden;aspect-ratio:3/2;background:var(--paper-2)}
.plate__media{width:100%;height:100%;object-fit:cover;filter:saturate(.74) contrast(1.03);transition:transform 1.2s var(--ease-out),filter .6s var(--ease)}
.plate:hover .plate__media{transform:scale(1.035);filter:saturate(.92) contrast(1.04)}
.plate__cap{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:14px;align-items:baseline;margin-top:12px;padding-top:10px;border-top:1px solid var(--ink);font-size:13.5px;line-height:1.5;color:var(--ink-3);transition:border-color .3s var(--ease)}
.plate:hover .plate__cap{border-top-color:var(--teal)}
.plate__no{font:400 11px/1.7 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--ink);white-space:nowrap}
.plate__src{font:400 11px/1.7 var(--mono);letter-spacing:.04em;color:var(--ink-3);white-space:nowrap}
.plate--tall .plate__frame{aspect-ratio:4/5}
.plate--wide .plate__frame{aspect-ratio:21/9}

/* Cyanotype: grayscale screened onto Prussian blue */
.plate--tone .plate__frame{isolation:isolate;background:var(--prussian)}
.plate--tone .plate__media,.plate--tone:hover .plate__media{filter:grayscale(1) contrast(1.25) brightness(1.04);mix-blend-mode:screen}

/* Ink: inverted footage multiplied onto paper */
.plate--ink .plate__frame{isolation:isolate;background:var(--paper)}
.plate--ink .plate__media,.plate--ink:hover .plate__media{filter:grayscale(1) invert(1) brightness(1.14) contrast(1.12);mix-blend-mode:multiply;opacity:.86;transform:none}
.plate--ink .plate__frame::after{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;background-image:linear-gradient(to right,rgba(15,23,42,.06) 1px,transparent 1px),linear-gradient(to bottom,rgba(15,23,42,.06) 1px,transparent 1px);background-size:48px 48px}

/* Inset plates inside bordered boxes: caption sits on the image */
.plate--inset{height:100%}
.plate--inset .plate__frame{height:100%;min-height:340px;aspect-ratio:auto}
.plate--inset .plate__cap{position:absolute;left:0;right:0;bottom:0;z-index:2;margin:0;padding:11px 16px;background:rgba(251,250,246,.94);border-top:1px solid var(--ink)}

/* Video plate */
.plate--video .plate__frame{aspect-ratio:21/9}
.hud{position:absolute;inset:0;z-index:3;pointer-events:none;font:400 11px/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--paper)}
.hud>span{position:absolute;padding:7px 9px;background:rgba(15,23,42,.82)}
.hud__tl{top:14px;left:14px}
.hud__tr{top:14px;right:14px}
.hud__bl{bottom:14px;left:14px;min-width:96px}
.hud__track{position:absolute;left:0;right:0;bottom:0;height:2px;background:rgba(15,23,42,.12)}
.hud__track span{display:block;height:100%;background:var(--teal);transform:scaleX(0);transform-origin:0 50%;transition:transform .3s linear}
.vidctl{position:absolute;right:14px;bottom:14px;z-index:4;display:inline-flex;align-items:center;gap:8px;padding:7px 10px;border:0;background:rgba(15,23,42,.82);color:var(--paper);font:400 11px/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;cursor:pointer;transition:background-color .2s}
.vidctl:hover{background:var(--teal)}
.vidctl .i{width:12px;height:12px}
.vidctl .i--play{display:none}
.is-paused .vidctl .i--play{display:block}
.is-paused .vidctl .i--pause{display:none}

/* Embedded third-party video */
.plate--embed .plate__frame{aspect-ratio:16/9;background:var(--ink)}
.plate--embed iframe{position:absolute;inset:0;width:100%;height:100%;border:0;filter:saturate(.3) contrast(.96);transition:filter .5s var(--ease)}
.plate--embed:hover iframe,.plate--embed:focus-within iframe{filter:none}

/* ---------- 10. Sections ---------- */
.sect{position:relative;isolation:isolate;padding:clamp(76px,10vw,140px) 0;border-top:1px solid var(--rule)}
.sect--sheet{background:var(--sheet)}
.sect__grid{display:grid;grid-template-columns:var(--rail) minmax(0,1fr);gap:0 clamp(24px,4.5vw,72px)}
.sect__body{min-width:0}
.rail__inner{position:sticky;top:96px}
.rail__inner::before{content:"";display:block;width:28px;height:1px;margin-bottom:18px;background:var(--ink)}
.rail__no{margin-bottom:10px;font:400 12px/1 var(--mono);letter-spacing:.08em;color:var(--teal)}
.rail__name{margin-bottom:10px;font-size:15px;font-weight:600;line-height:1.3;color:var(--ink)}
.rail__note{max-width:22ch;font-size:13.5px;line-height:1.5;color:var(--ink-3)}
.sect__wide{margin-top:clamp(44px,6vw,80px)}

/* At-a-glance + hairline cell grids */
.glance{padding:0 0 clamp(64px,8vw,112px)}
.cells{display:grid;gap:1px;list-style:none;background:var(--rule);border:1px solid var(--rule)}
.js .cells{background:transparent;border-color:transparent;transition:background-color 1.4s var(--ease),border-color 1.4s var(--ease)}
.js .cells.is-in{background:var(--rule);border-color:var(--rule)}
.cells--4{grid-template-columns:repeat(4,minmax(0,1fr))}
.cells--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.cell{position:relative;padding:26px 24px 30px;background:var(--paper);transition:background-color .3s var(--ease)}
.sect--sheet .cell{background:var(--sheet)}
.cell:hover{background:var(--sheet)}
.sect--sheet .cell:hover{background:#fff}
.cell__head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:20px}
.cell__id{font:400 11px/1.4 var(--mono);letter-spacing:.08em;color:var(--ink-3)}
.cell__icon{width:28px;height:28px;color:var(--teal);transition:transform .5s var(--ease-out)}
.cell:hover .cell__icon{transform:translateY(-2px)}
.cell h3{margin-bottom:8px;font-size:17px;letter-spacing:-.012em}
.cell p{font-size:15px;line-height:1.58;color:var(--ink-2)}

/* Principles */
.principles{list-style:none;margin-top:40px;border-top:1px solid var(--ink)}
.principles li{display:grid;grid-template-columns:52px minmax(0,1fr);gap:16px;padding:20px 0;border-bottom:1px solid var(--rule)}
.principles__no{font:400 12px/1.9 var(--mono);color:var(--teal)}
.principles h3{margin-bottom:6px;font-size:17px}
.principles p{font-size:15.5px}

/* ---------- 11. Method: pipeline, diagram, levels ---------- */
.pipeline{position:relative;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:1px;overflow:hidden;list-style:none;background:var(--rule);border:1px solid var(--rule)}
.pipeline::after{content:"";position:absolute;top:0;left:0;z-index:2;width:20%;height:2px;background:linear-gradient(90deg,rgba(15,118,110,0),var(--teal));transform:translateX(-100%);animation:signal 6s var(--ease) infinite}
@keyframes signal{0%{transform:translateX(-100%)}70%,100%{transform:translateX(500%)}}
.step{position:relative;padding:58px 22px 26px;background:var(--sheet)}
.step__no{position:absolute;top:20px;left:22px;font:400 12px/1 var(--mono);letter-spacing:.06em;color:var(--ink-3)}
.step__dot{position:absolute;top:18px;right:20px;width:9px;height:9px;border:1px solid var(--ink);border-radius:50%;background:var(--sheet);animation:lamp 6s linear infinite}
.step:nth-child(2) .step__dot{animation-delay:.84s}
.step:nth-child(3) .step__dot{animation-delay:1.68s}
.step:nth-child(4) .step__dot{animation-delay:2.52s}
.step:nth-child(5) .step__dot{animation-delay:3.36s}
@keyframes lamp{0%,4%{background:var(--sheet);border-color:var(--ink)}8%,22%{background:var(--teal);border-color:var(--teal)}34%,100%{background:var(--sheet);border-color:var(--ink)}}
.step h3{margin-bottom:10px;font-size:19px;letter-spacing:-.015em}
.step p{margin-bottom:18px;font-size:14.5px;line-height:1.56}
.step__out{font:400 11px/1.4 var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--teal)}

.diagram__box{overflow-x:auto;padding:22px;border:1px solid var(--rule);background:var(--sheet)}
.diagram svg{width:100%;min-width:560px;height:auto}
.diagram .dg-tall{display:none}
.dg-box{fill:var(--sheet);stroke:var(--ink);stroke-width:1}
.dg-box--accent{fill:#f2f7f5;stroke:var(--teal)}
.dg-box--off{fill:none;stroke:var(--rust);stroke-dasharray:4 4}
.dg-line{fill:none;stroke:var(--ink-3);stroke-width:1}
.dg-native{fill:none;stroke:var(--teal);stroke-width:1.25;stroke-dasharray:5 5}
.dg-head{fill:var(--ink-3)}
.dg-head--teal{fill:var(--teal)}
.dg-label{font-family:var(--mono);font-size:11px;letter-spacing:.08em;fill:var(--ink)}
.dg-label--off{fill:var(--rust)}
.dg-label--teal{fill:var(--teal)}
.dg-sub{font-family:var(--sans);font-size:12.5px;fill:var(--ink-3)}
.js .diagram .dg-draw{stroke-dasharray:1;stroke-dashoffset:1;transition:stroke-dashoffset 1.5s var(--ease-out)}
.js .diagram.is-in .dg-draw{stroke-dashoffset:0}
.js .diagram .dg-d2{transition-delay:.25s}
.js .diagram .dg-d3{transition-delay:.5s}
.js .diagram .dg-d4{transition-delay:.75s}
.js .diagram .dg-d5{transition-delay:1s}
.js .diagram text,.js .diagram .dg-native,.js .diagram .dg-head,.js .diagram .dg-box--off{opacity:0;transition:opacity .6s var(--ease) .4s}
.js .diagram.is-in text,.js .diagram.is-in .dg-native,.js .diagram.is-in .dg-head,.js .diagram.is-in .dg-box--off{opacity:1}

/* Tables */
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
.table{font-size:15px;line-height:1.5}
.table caption{padding:0 0 12px;caption-side:top;text-align:left;font:400 11px/1.4 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3)}
.table thead th{padding:10px 16px 10px 0;border-bottom:1px solid var(--ink);text-align:left;vertical-align:bottom;font:400 11px/1.4 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3)}
.table td,.table tbody th{padding:14px 16px 14px 0;border-bottom:1px solid var(--rule);text-align:left;vertical-align:top}
.table tbody th{font-weight:600;color:var(--ink)}
.table tbody tr{transition:background-color .2s var(--ease)}
.table tbody tr:hover{background:rgba(15,118,110,.045)}
.table code{font-size:13px;color:var(--ink)}
.table .num{font-family:var(--mono);font-size:13.5px;color:var(--ink);white-space:nowrap}
.table .dim{color:var(--ink-3)}

/* Status pills: Stable · Beta · Test */
.st{display:inline-flex;align-items:center;gap:8px;padding:4px 11px 4px 9px;border-radius:999px;font:400 12px/1.5 var(--mono);letter-spacing:.04em;white-space:nowrap}
.st i{width:8px;height:8px;border-radius:50%;flex:none;background:currentColor}
.st--stable{background:var(--teal-wash);color:var(--teal-2)}
.st--beta{background:var(--sky-wash);color:var(--sky)}
.st--test{background:var(--ochre-wash);color:var(--ochre)}

/* Callout */
.callout{position:relative;margin-top:30px;padding:22px 24px 22px 26px;border:1px solid var(--rule);border-left:3px solid var(--teal);background:var(--paper)}
.callout__title{margin-bottom:10px;font:400 11px/1.4 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--teal)}
.callout p{font-size:15.5px}
.callout ul{margin-top:12px;list-style:none}
.callout li{position:relative;padding:5px 0 5px 20px;font-size:15px;line-height:1.5}
.callout li::before{content:"";position:absolute;left:2px;top:14px;width:8px;height:1px;background:var(--teal)}
.callout__after{margin-top:16px}

/* ---------- 12. Reproducibility: specimen report ---------- */
.specimen{position:relative;border:1px solid var(--ink);background:#fffdf8;box-shadow:8px 8px 0 rgba(15,23,42,.06);font-size:14px}
.specimen__head{display:flex;justify-content:space-between;gap:12px;padding:12px 18px;border-bottom:1px solid var(--ink);font:400 11px/1.4 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--ink)}
.specimen__list{display:grid;grid-template-columns:158px minmax(0,1fr)}
.specimen__list dt,.specimen__list dd{padding:10px 18px;border-bottom:1px dashed var(--rule)}
.specimen__list dt{border-right:1px solid var(--rule);font:400 11px/1.75 var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--ink-3)}
.specimen__list dd{font:400 13px/1.55 var(--mono);color:var(--ink)}
.specimen__list dt:nth-last-child(2),.specimen__list dd:last-child{border-bottom:0}
.specimen__stamp{position:absolute;right:20px;bottom:18px;padding:8px 12px;border:2px solid var(--teal);border-radius:6px;color:var(--teal);font:400 11px/1.3 var(--mono);letter-spacing:.12em;text-align:center;text-transform:uppercase;opacity:.82;mix-blend-mode:multiply;transform:rotate(-7deg)}
.js .specimen .specimen__stamp{opacity:0;transform:rotate(-7deg) scale(1.7);transition:opacity .25s var(--ease) .7s,transform .45s cubic-bezier(.3,1.6,.5,1) .7s}
.js .specimen.is-in .specimen__stamp{opacity:.82;transform:rotate(-7deg) scale(1)}
.duo{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:clamp(24px,3.5vw,48px);align-items:end;margin-top:clamp(56px,7vw,96px)}
.duo .plate:nth-child(2) .plate__frame{aspect-ratio:4/5}

/* ---------- 13. Background viewing ---------- */
.viewing{position:relative;padding:clamp(72px,9vw,124px) 0;border-top:1px solid var(--rule);background:var(--paper-2)}
.viewing__grid{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,7fr);gap:clamp(28px,5vw,80px);align-items:center}
.viewing .fineprint{margin-top:20px;padding-top:14px;border-top:1px solid var(--rule-2)}

/* ---------- 14. Builds ---------- */
.build{display:grid;grid-template-columns:minmax(0,6fr) minmax(0,5fr);border:1px solid var(--ink);background:var(--sheet)}
.build__main{padding:clamp(26px,4vw,48px)}
.build__side{border-left:1px solid var(--ink)}
.build__meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px 16px;font:400 12px/1.4 var(--mono);letter-spacing:.03em;color:var(--ink-3)}
.build__title{margin:20px 0 8px;font-size:clamp(2.1rem,3.6vw,3rem);font-weight:400;line-height:1;letter-spacing:-.045em}
.build__date{font:400 13px/1.5 var(--mono);color:var(--ink-3)}
.releases{margin-top:clamp(44px,6vw,72px)}
.verify{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(24px,4vw,56px);align-items:start;margin-top:clamp(44px,6vw,72px);padding-top:28px;border-top:1px solid var(--ink)}
.verify p{font-size:15.5px}

/* Code blocks */
.code{overflow:hidden;border-radius:var(--r);background:var(--ink);color:#e9e5dc}
.code + .code{margin-top:14px}
.code__bar{display:flex;justify-content:space-between;align-items:center;gap:12px;min-height:38px;padding:6px 10px 6px 16px;border-bottom:1px solid rgba(244,241,234,.12);font:400 11px/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:#a7b0bc}
.code pre{padding:16px;overflow-x:auto;font:400 13.5px/1.7 var(--mono);color:#e9e5dc}
.code .p{color:#86d1c2;user-select:none}
.code .c{color:#8b95a3}
.copy{padding:6px 10px;border:1px solid rgba(244,241,234,.28);border-radius:2px;background:transparent;color:#e9e5dc;font:400 11px/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;cursor:pointer;transition:border-color .2s,color .2s}
.copy:hover{border-color:#e9e5dc}
.copy.is-done{border-color:#86d1c2;color:#86d1c2}
.code--log pre{font-size:12.5px;line-height:1.75}
.code--hash pre{white-space:pre-wrap;word-break:break-all}
.code--log .t{color:#8b95a3}
.code--log .k{color:#86d1c2}
.code--log .w{color:#e7c27d}

/* ---------- 16. Lab log (home list) ---------- */
.loglist{list-style:none;border-top:1px solid var(--ink)}
.loglist__item{position:relative;display:grid;grid-template-columns:118px minmax(0,1fr);gap:22px;padding:22px 0;border-bottom:1px solid var(--rule)}
.loglist__item::before{content:"";position:absolute;left:0;top:-1px;width:0;height:1px;background:var(--teal);transition:width .5s var(--ease-out)}
.loglist__item:hover::before{width:118px}
.loglist__item time{font:400 12.5px/1.75 var(--mono);color:var(--ink)}
.loglist__meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:8px;font:400 11px/1.4 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3)}
.loglist h3{margin-bottom:6px;font-size:18px;letter-spacing:-.015em}
.loglist h3 a{color:var(--ink);text-decoration:none;background-image:linear-gradient(currentColor,currentColor);background-position:0 100%;background-repeat:no-repeat;background-size:0 1px;transition:background-size .45s var(--ease-out),color .2s}
.loglist h3 a:hover{color:var(--teal);background-size:100% 1px}
.loglist p{font-size:15px;color:var(--ink-2)}

/* ---------- 17. Closing call to action ---------- */
.cta{position:relative;isolation:isolate;padding:clamp(88px,11vw,152px) 0;border-top:1px solid var(--rule)}
.cta__box{position:relative;display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);border:1px solid var(--ink);background:var(--sheet)}
.cta__copy{padding:clamp(28px,5vw,64px)}
.cta__copy .h2{max-width:18ch}
.cta__side{border-left:1px solid var(--ink)}
.stamp{position:absolute;top:-60px;right:clamp(16px,4vw,48px);z-index:5;width:124px;height:124px}
.stamp__ring{transform-box:fill-box;transform-origin:center;animation:spin 60s linear infinite}
.stamp__text{font-family:var(--mono);font-size:8.6px;letter-spacing:.12em;fill:var(--teal)}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---------- 18. Footer ---------- */
.footer{padding:clamp(56px,7vw,92px) 0 28px;border-top:1px solid var(--ink);background:var(--paper-2);font-size:15px}
.footer__grid{display:grid;grid-template-columns:minmax(0,5fr) repeat(3,minmax(0,2fr));gap:32px;padding-bottom:44px;border-bottom:1px solid var(--rule-2)}
.footer__brand p{max-width:30rem;margin-top:18px;color:var(--ink-2)}
.footer__brand .caps{margin-top:14px}
.brand--lg .brand__mark{width:38px;height:38px}
.brand--lg .brand__name{font-size:24px}
.footer__h{margin-bottom:14px;font:400 11px/1.4 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3)}
.footer ul{list-style:none}
.footer li + li{margin-top:9px}
.footer__col a{color:var(--ink);text-decoration:none}
.footer__col a:hover{color:var(--teal);text-decoration:underline}
.footer__notice{padding:26px 0;border-bottom:1px solid var(--rule-2);font-size:13.5px;line-height:1.65;color:var(--ink-3)}
.footer__base{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px 28px;padding-top:22px;font:400 12px/1.6 var(--mono);color:var(--ink-3)}
.footer__base a{color:var(--ink)}

/* ---------- 19. Document pages (method, builds, notes, legal) ---------- */
.doc-head{position:relative;isolation:isolate;padding:clamp(48px,7vw,96px) 0 clamp(36px,4.5vw,60px)}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:30px;font:400 12px/1.4 var(--mono);letter-spacing:.03em;color:var(--ink-3)}
.crumbs a{color:var(--ink-3);text-decoration:none}
.crumbs a:hover{color:var(--teal)}
.crumbs__sep{color:var(--rule-2)}
.doc-title{max-width:14ch;margin-bottom:26px;font-size:clamp(2.8rem,6.4vw,5.4rem);font-weight:400;line-height:.96;letter-spacing:-.052em}
.doc-head .lead{max-width:44rem}
.doc-meta{display:flex;flex-wrap:wrap;margin-top:36px;border-top:1px solid var(--ink)}
.doc-meta>div{min-width:150px;padding:13px 32px 0 0}
.doc-meta dt{font:400 11px/1.4 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3)}
.doc-meta dd{margin-top:5px;font-size:15px;color:var(--ink)}
.doc-plate{margin-top:clamp(40px,5vw,64px)}
.doc{display:grid;grid-template-columns:236px minmax(0,1fr);gap:clamp(32px,5.5vw,88px);padding-block:clamp(56px,7vw,96px);border-top:1px solid var(--rule)}

/* Table of contents */
.toc__inner{position:sticky;top:92px;max-height:calc(100vh - 116px);overflow-y:auto;padding-bottom:16px;scrollbar-width:thin}
.toc__title{margin-bottom:14px;font:400 11px/1.4 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3)}
.toc__list{position:relative;list-style:none;border-left:1px solid var(--rule)}
.toc__list a{display:grid;grid-template-columns:30px minmax(0,1fr);padding:6px 0 6px 14px;font-size:14px;line-height:1.4;color:var(--ink-3);text-decoration:none;transition:color .2s var(--ease)}
.toc__list a span{font:400 11px/1.9 var(--mono);transition:color .2s var(--ease)}
.toc__list a:hover{color:var(--ink)}
.toc__list a.is-active{color:var(--ink)}
.toc__list a.is-active span{color:var(--teal)}
.toc__marker{position:absolute;left:-1px;top:0;width:2px;height:0;background:var(--teal);opacity:0;transition:transform .4s var(--ease-out),height .4s var(--ease-out),opacity .3s}
.toc__marker.is-on{opacity:1}
.toc__aside{margin-top:28px;padding-top:18px;border-top:1px solid var(--rule)}
.toc__aside p{font-size:13.5px;line-height:1.55;color:var(--ink-3)}
.toc__aside .btn{margin-top:14px}

/* Article prose */
.article{min-width:0;max-width:780px}
.article>section{margin-bottom:clamp(60px,7vw,96px)}
.article>section:last-child{margin-bottom:0}
.article h2{display:flex;align-items:baseline;gap:14px;margin-bottom:22px;padding-top:20px;border-top:1px solid var(--ink);font-size:clamp(1.65rem,2.7vw,2.3rem);font-weight:400;line-height:1.1;letter-spacing:-.032em}
.sec-no{flex:none;font:400 12px/1 var(--mono);letter-spacing:.06em;color:var(--teal);transform:translateY(-.55em)}
.article h3{margin:34px 0 10px;font-size:18px;letter-spacing:-.012em}
.article p,.article li{font-size:16.5px;line-height:1.7}
.article p{margin-bottom:1.05em}
.article ul,.article ol{margin:0 0 1.2em;padding-left:1.25em}
.article li{margin:.38em 0}
.article li::marker{color:var(--teal);font-family:var(--mono);font-size:.85em}
.article :not(pre)>code{padding:.08em .38em;border-radius:2px;background:rgba(15,23,42,.06);font-size:.85em;color:var(--ink)}
.article .plate,.article .diagram,.article .code,.article .table-wrap,.article .callout,.article .bars{margin-block:36px}
.article .table-wrap .table{min-width:560px}
.article .build__meta{margin-bottom:6px;font-size:12px;line-height:1.4}
.article .note{font-size:15px;line-height:1.6}
.article .callout p{font-size:15.5px}
.article .callout p:last-child,.article .summary-box p:last-child{margin-bottom:0}
.article .callout__title{margin-bottom:10px;font-size:11px;line-height:1.4}
.deflist{border-top:1px solid var(--ink)}
.deflist>div{display:grid;grid-template-columns:200px minmax(0,1fr);gap:20px;padding:14px 0;border-bottom:1px solid var(--rule)}
.deflist dt{font:400 12px/1.7 var(--mono);letter-spacing:.04em;color:var(--ink)}
.deflist dd{font-size:15.5px;line-height:1.6}
.revisions{list-style:none!important;padding:0!important;border-top:1px solid var(--ink)}
.revisions li{display:grid;grid-template-columns:70px 120px minmax(0,1fr);gap:16px;margin:0!important;padding:12px 0;border-bottom:1px solid var(--rule);font-size:15px!important}
.revisions li span{font:400 12.5px/1.8 var(--mono);color:var(--ink)}

/* Builds page */
.release{border-top:1px solid var(--rule)}
.release:last-of-type{border-bottom:1px solid var(--rule)}
.release summary{display:grid;grid-template-columns:90px 120px minmax(0,1fr) auto;gap:16px;align-items:baseline;padding:18px 0;cursor:pointer;list-style:none}
.release summary::-webkit-details-marker{display:none}
.release summary:hover .release__title{color:var(--teal)}
.release__v{font:400 15px/1.4 var(--mono);color:var(--ink)}
.release__d{font:400 12.5px/1.6 var(--mono);color:var(--ink-3)}
.release__title{font-weight:600;color:var(--ink);transition:color .2s}
.release__chev{width:12px;height:12px;color:var(--ink-3);transition:transform .35s var(--ease-out)}
.release[open] .release__chev{transform:rotate(180deg)}
.release__body{padding:0 0 24px 226px}
.release__body ul{margin-bottom:0}
.release__body p{font-size:15.5px}
.platforms{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;margin-top:28px;background:var(--rule);border:1px solid var(--rule)}
.platforms>div{padding:18px 20px;background:var(--sheet)}
.platforms h3{margin:0 0 4px!important;font-size:16px}
.platforms p{margin:0 0 12px!important;font-size:14.5px!important;color:var(--ink-3)}

/* Lab log page */
.filters{margin-top:28px}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{padding:8px 12px;border:1px solid var(--rule-2);border-radius:999px;background:transparent;font:400 12px/1 var(--mono);letter-spacing:.03em;color:var(--ink-2);cursor:pointer;transition:background-color .2s,border-color .2s,color .2s}
.chip:hover{border-color:var(--ink);color:var(--ink)}
.chip[aria-pressed="true"]{border-color:var(--ink);background:var(--ink);color:var(--paper)}
.filters__count{margin-top:12px;font:400 12px/1.4 var(--mono);color:var(--ink-3)}
.month{margin-bottom:24px}
.month__title{display:flex;justify-content:space-between;align-items:baseline;padding:12px 0;border-bottom:1px solid var(--ink);font:400 12px/1.4 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--ink)}
.entry{display:grid;grid-template-columns:150px minmax(0,1fr);gap:clamp(18px,3vw,40px);padding:34px 0 40px;border-bottom:1px solid var(--rule)}
.entry__aside{display:flex;flex-direction:column;align-items:flex-start;gap:10px;font:400 12px/1.4 var(--mono);color:var(--ink-3)}
.entry__aside time{font-size:13px;color:var(--ink)}
.entry h3{margin-bottom:14px;font-size:clamp(1.4rem,2.2vw,1.9rem);font-weight:400;line-height:1.15;letter-spacing:-.028em}
.logbook{min-width:0;max-width:820px}
.entry:target h3{color:var(--teal)}
.entry p{font-size:16px;line-height:1.7}
.entry p + p{margin-top:.9em}
.entry .plate,.entry .code,.entry .bars{margin-top:26px}
.entry__sign{margin-top:18px!important;font:400 12px/1.5 var(--mono)!important;color:var(--ink-3)}
.entry--retraction{background:linear-gradient(90deg,rgba(154,52,18,.05),transparent 60%)}
.struck{text-decoration:line-through;text-decoration-color:var(--rust);text-decoration-thickness:1.5px;color:var(--ink-3)}

/* Stacked bar chart */
.bars{padding:20px;border:1px solid var(--rule);background:var(--sheet)}
.bars__title{margin-bottom:14px;font:400 11px/1.4 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3)}
.bars__row{display:flex;height:34px;overflow:hidden;border:1px solid var(--ink)}
.bars__seg{display:flex;align-items:center;padding:0 10px;overflow:hidden;font:400 11px/1 var(--mono);white-space:nowrap;transform-origin:left}
.bars__seg--a{flex:0 0 68%;background:var(--sky);color:#fff}
.bars__seg--b{flex:0 0 21%;background:var(--teal);color:#fff;border-left:1px solid var(--sheet)}
.bars__seg--c{flex:1 1 auto;background:var(--paper-2);color:var(--ink-2);border-left:1px solid var(--sheet)}
.js .bars .bars__seg{transform:scaleX(0);transition:transform 1s var(--ease-out)}
.js .bars.is-in .bars__seg{transform:none}
.js .bars .bars__seg--b{transition-delay:.2s}
.js .bars .bars__seg--c{transition-delay:.4s}
.bars__legend{display:flex;flex-wrap:wrap;gap:8px 20px;margin-top:12px;font:400 12px/1.4 var(--mono);color:var(--ink-3)}
.bars__legend span{display:inline-flex;align-items:center;gap:8px}
.bars__legend i{width:10px;height:10px}
.bars__legend .k-a{background:var(--sky)}
.bars__legend .k-b{background:var(--teal)}
.bars__legend .k-c{background:var(--paper-2);border:1px solid var(--rule-2)}

/* Download page */
.dl{position:relative;isolation:isolate;padding:clamp(52px,7vw,100px) 0 clamp(64px,8vw,112px)}
.dl__grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:clamp(32px,5.5vw,88px);align-items:start}
.dl__title{max-width:13ch;margin-bottom:24px;font-size:clamp(2.6rem,5.8vw,4.8rem);font-weight:400;line-height:.98;letter-spacing:-.05em}
.status{margin:30px 0 8px;border:1px solid var(--ink);background:var(--sheet)}
.status__row{display:grid;grid-template-columns:110px minmax(0,1fr);gap:12px;padding:10px 16px;border-top:1px solid var(--rule);font:400 12.5px/1.6 var(--mono);color:var(--ink)}
.status__row:first-child{border-top:0}
.status__row dt{letter-spacing:.06em;text-transform:uppercase;color:var(--ink-3)}
.status__bar{position:relative;height:3px;overflow:hidden;background:var(--rule)}
.status__bar::before{content:"";position:absolute;top:0;bottom:0;left:0;width:32%;background:var(--teal);animation:indeterminate 1.7s var(--ease) 3 forwards}
.status__bar::after{content:"";position:absolute;inset:0;background:var(--teal);transform:scaleX(0);transform-origin:left;animation:fillbar .8s var(--ease-out) 5.1s forwards}
@keyframes indeterminate{0%{transform:translateX(-100%)}100%{transform:translateX(320%)}}
@keyframes fillbar{to{transform:scaleX(1)}}
.protocol{counter-reset:p;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:1px;list-style:none;background:var(--rule);border:1px solid var(--rule)}
.protocol li{position:relative;padding:54px 20px 24px;background:var(--sheet)}
.protocol li::before{counter-increment:p;content:"0" counter(p);position:absolute;top:20px;left:20px;font:400 12px/1 var(--mono);letter-spacing:.06em;color:var(--teal)}
.protocol h3{margin-bottom:8px;font-size:17px}
.protocol p{font-size:14.5px;line-height:1.56}

/* Legal */
.summary-box{margin-bottom:48px;padding:24px 28px;border:1px solid var(--ink);background:var(--sheet)}
.summary-box .callout__title{color:var(--ink)}
.summary-box p{font-size:16.5px;line-height:1.65}

/* ---------- 19b. Compatibility strip (portrait cover posters) ---------- */
.titles{position:relative;padding:clamp(72px,9vw,128px) 0 clamp(64px,8vw,104px);border-top:1px solid var(--rule);background:var(--sheet)}
.titles__head{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:clamp(24px,4vw,64px);align-items:end;margin-bottom:clamp(32px,4vw,48px)}
.titles__head .h2{max-width:19ch;margin-bottom:0}
.titles__intro p + p{margin-top:12px}
.shelf__bar{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:14px}
.shelf__ctrl{display:flex;gap:8px}
.shelf__btn{display:inline-grid;place-items:center;width:40px;height:40px;border:1px solid var(--ink);border-radius:var(--r);background:transparent;color:var(--ink);cursor:pointer;transition:background-color .2s,color .2s,opacity .2s}
.shelf__btn:hover:not(:disabled){background:var(--ink);color:var(--paper)}
.shelf__btn:disabled{opacity:.3;cursor:default}
.shelf__btn .i{width:14px;height:14px}
.shelf{display:flex;overflow-x:auto;overscroll-behavior-x:contain;padding:6px max(var(--gutter),calc((100% - var(--wrap))/2 + var(--gutter))) 20px}
.shelf:focus-visible{outline-offset:-3px}
.js .shelf{scrollbar-width:none}
.js .shelf::-webkit-scrollbar{display:none}
.shelf__list{display:flex;flex:none;gap:16px;list-style:none}
.shelf__filter{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px 24px;margin-bottom:18px}
.shelf__filter .filters__count{margin:0}
.chip span{margin-left:8px;font-size:11px;color:var(--ink-3)}
.chip[aria-pressed="true"] span{color:var(--paper);opacity:.7}
.shelf__scrub{position:relative;height:2px;overflow:hidden;background:var(--rule)}
.shelf__scrub span{position:absolute;top:0;bottom:0;left:0;width:30%;background:var(--ink);transition:transform .15s linear}
html:not(.js) .shelf__scrub{display:none}
/* Portrait cover strip: large 2:3 posters fill each tile, name overlaid on the art */
.shelf--apps .shelf__list{gap:clamp(14px,1.8vw,22px);align-items:flex-start}
.badge{display:inline-flex;align-items:center;gap:8px;padding:7px 13px;border:1px solid var(--rule-2);border-radius:999px;font:400 12px/1 var(--mono);letter-spacing:.04em;color:var(--ink-2)}
.badge__hi{font-weight:600;color:var(--teal)}
.app{position:relative;display:grid;grid-template-rows:minmax(0,1fr) auto;gap:10px;flex:0 0 clamp(140px,14vw,180px);transition:transform .25s var(--ease)}
.app--stable{--si:var(--teal)}
.app--beta{--si:var(--sky)}
.app--test{--si:var(--ochre)}
.app__ic{grid-area:1/1;position:relative;width:100%;aspect-ratio:2/3;border-radius:6px;overflow:hidden;border:1px solid var(--ink);background:var(--paper-2);box-shadow:4px 4px 0 rgba(15,23,42,.08);transition:border-color .25s var(--ease),box-shadow .25s var(--ease)}
.app__ic img{width:100%;height:100%;object-fit:cover;display:block}
.app:hover{transform:translateY(-3px)}
.app:hover .app__ic{border-color:var(--teal);box-shadow:5px 7px 0 rgba(15,118,110,.16)}
.app__name{font-size:12.5px;font-weight:600;line-height:1.3;color:var(--ink)}
.app:not(.app--more) .app__name{grid-area:1/1;align-self:end;z-index:2;margin:0 1px 1px;padding:18px 9px 7px;font-size:12px;line-height:1.25;color:#fff;background:linear-gradient(to top,rgba(9,13,24,.9) 0%,rgba(9,13,24,.72) 58%,rgba(9,13,24,0) 100%);border-radius:0 0 5px 5px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.app__state{grid-row:2;display:inline-flex;align-items:center;gap:6px;font:400 10px/1.3 var(--mono);letter-spacing:.05em;text-transform:uppercase;color:var(--ink-3)}
.app__state .dot{width:7px;height:7px;border-radius:50%;background:var(--si,var(--teal));flex:none}
.app--more{display:block}
.app--more .app__link{display:flex;flex-direction:column;gap:10px;height:100%;text-decoration:none;color:var(--ink);transition:transform .25s var(--ease)}
.app__ic--more{display:grid;place-items:center;width:100%;aspect-ratio:2/3;border:1px dashed var(--ink);border-radius:6px;background:var(--sheet);color:var(--teal);transition:transform .25s var(--ease),border-color .25s var(--ease),background-color .25s var(--ease)}
.app__ic--more svg{width:30px;height:30px}
.app--more:hover .app__link{transform:translateY(-3px)}
.app--more:hover .app__ic--more{border-color:var(--teal);background:#f2f7f5}
.app--more:hover .app__name{color:var(--teal)}
.app--more .app__state{text-transform:none;letter-spacing:.02em}

/* Download-the-rest card after the strip */
.libcard{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px 32px;margin-top:clamp(22px,3vw,34px);padding:clamp(22px,3.2vw,34px);border:1px solid var(--ink);background:var(--sheet)}
.libcard__body{max-width:48rem}
.libcard__body .kicker{margin-bottom:12px}
.libcard__body .h3{margin-bottom:8px}
.libcard__body p:last-child{font-size:15px;color:var(--ink-2)}

/* Status dot legend */
.applegend{display:flex;flex-wrap:wrap;gap:10px 18px;margin-top:22px;font-size:13px;color:var(--ink-2)}
.applegend span{display:inline-flex;align-items:center;gap:8px}
.applegend i{width:9px;height:9px;border-radius:50%;flex:none}
.dot--stable{background:var(--teal)}
.dot--beta{background:var(--sky)}
.dot--test{background:var(--ochre)}
.titles__legend{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:clamp(20px,4vw,56px);align-items:start;margin-top:clamp(26px,3.5vw,40px)}
.legend{display:flex;flex-wrap:wrap;gap:10px 22px}
.legend>div{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-2)}
.titles__fine p + p{margin-top:10px}

/* ---------- 20. Reveal motion ---------- */
.js [data-reveal]{opacity:0;transform:translate3d(0,18px,0);transition:opacity .9s var(--ease-out),transform .9s var(--ease-out)}
.js [data-reveal].is-in{opacity:1;transform:none}
.js [data-reveal="fade"]{transform:none}
.js .plate[data-reveal]{opacity:1;transform:none}
.js .plate[data-reveal] .plate__frame{clip-path:inset(0 0 100% 0);transition:clip-path 1.25s var(--ease-out)}
.js .plate[data-reveal].is-in .plate__frame{clip-path:inset(0 0 0 0)}
.js .plate[data-reveal] .plate__media{scale:1.12;transition:scale 1.8s var(--ease-out),transform 1.2s var(--ease-out),filter .6s var(--ease)}
.js .plate[data-reveal].is-in .plate__media{scale:1}
.js .plate[data-reveal] .plate__cap{opacity:0;transform:translateY(8px);transition:opacity .8s var(--ease-out) .35s,transform .8s var(--ease-out) .35s,border-color .3s var(--ease)}
.js .plate[data-reveal].is-in .plate__cap{opacity:1;transform:none}
.js .plate--inset[data-reveal] .plate__cap{transform:none}
.js [data-stagger]>[data-reveal]:nth-child(2){transition-delay:.08s}
.js [data-stagger]>[data-reveal]:nth-child(3){transition-delay:.16s}
.js [data-stagger]>[data-reveal]:nth-child(4){transition-delay:.24s}
.js [data-stagger]>[data-reveal]:nth-child(5){transition-delay:.32s}
.js [data-stagger]>[data-reveal]:nth-child(6){transition-delay:.40s}
.js [data-delay="1"]{transition-delay:.1s}
.js [data-delay="2"]{transition-delay:.2s}
.js [data-delay="3"]{transition-delay:.3s}

/* ---------- 21. Responsive ---------- */
@media (max-width:1180px){
  .brand__tag{display:none}
}
@media (max-width:1100px){
  .pipeline,.protocol{grid-template-columns:repeat(2,minmax(0,1fr))}
  .pipeline>:last-child,.protocol>:last-child{grid-column:1/-1}
  .pipeline::after{display:none}
  .cells--4{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:980px){
  html{scroll-padding-top:76px}
  .brand__tag{display:none}
  .masthead__in{gap:12px}
  .nav-toggle{display:inline-flex}
  .nav{display:none}
  .masthead.is-open .nav{position:absolute;top:100%;left:0;right:0;display:flex;flex-direction:column;align-items:stretch;gap:0;padding:6px var(--gutter) 22px;border-bottom:1px solid var(--rule);background:var(--paper);box-shadow:0 28px 40px -28px rgba(15,23,42,.35)}
  .masthead.is-open .nav a{padding:15px 0;border-bottom:1px solid var(--rule);font-size:18px}
  .masthead.is-open .nav a::after{display:none}
  .masthead__cta{margin-left:auto}
  html:not(.js) .masthead__in{flex-wrap:wrap;height:auto;padding-block:12px}
  html:not(.js) .nav{display:flex;order:3;width:100%;margin:0;overflow-x:auto}
  html:not(.js) .nav-toggle{display:none}
  .hero__cols,.split--7-5,.split--5-7,.split--8-4,.viewing__grid,.dl__grid,.verify,.duo,.titles__head,.titles__legend{grid-template-columns:minmax(0,1fr)}
  .sect__grid{grid-template-columns:minmax(0,1fr)}
  .rail{margin-bottom:26px}
  .rail__inner{position:static;display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 14px}
  .rail__inner::before{display:none}
  .rail__no,.rail__name{margin:0}
  .rail__note{display:none}
  .build,.cta__box{grid-template-columns:minmax(0,1fr)}
  .build__side,.cta__side{border-left:0;border-top:1px solid var(--ink)}
  .plate--inset .plate__frame{min-height:0;aspect-ratio:16/10;height:auto}
  .plate--inset .plate__cap{position:static;padding:10px 16px 12px;background:transparent}
  .doc{grid-template-columns:minmax(0,1fr)}
  .toc__inner{position:static;max-height:none}
  .footer__grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .footer__brand{grid-column:1/-1}
  .release__body{padding-left:0}
  .stamp{width:100px;height:100px;top:-50px}
}
@media (max-width:760px){
  body{font-size:16px}
  .topline .topline__r{display:none}
  .plate--video .plate__frame{aspect-ratio:4/3}
  .plate--wide .plate__frame{aspect-ratio:16/10}
  .hud__tr{display:none}
  .cells--4,.cells--3,.pipeline,.protocol,.platforms{grid-template-columns:minmax(0,1fr)}
  .loglist__item,.entry{grid-template-columns:minmax(0,1fr);gap:8px}
  .entry__aside{flex-direction:row;flex-wrap:wrap;align-items:center}
  .specimen__list{grid-template-columns:minmax(0,1fr)}
  .specimen__list dt{padding-bottom:0;border-right:0;border-bottom:0}
  .specimen__list dd{padding-top:2px}
  .specimen__stamp{position:static;display:inline-block;margin:6px 18px 18px}
  .status__row{grid-template-columns:minmax(0,1fr);gap:2px}
  .launcher__list li{grid-template-columns:minmax(0,1fr) auto 52px;gap:8px}
  .launcher__sw{display:none}
  .stamp + .cta__copy{padding-top:68px}
  .diagram__box{padding:14px}
  .diagram .dg-wide{display:none}
  .diagram .dg-tall{display:block;min-width:0}
  .code pre{white-space:pre-wrap;overflow-wrap:anywhere}
  .deflist>div{grid-template-columns:minmax(0,1fr);gap:4px}
  .revisions li{grid-template-columns:60px minmax(0,1fr)}
  .revisions li span:nth-child(2){grid-column:2}
  .release summary{grid-template-columns:64px minmax(0,1fr) auto;gap:6px 12px}
  .release__d{grid-column:2;grid-row:1}
  .release__title{grid-column:1/-1;grid-row:2}
  .release__chev{grid-column:3;grid-row:1}
  .footer__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer__base{flex-direction:column}
}

/* ---------- 22. Reduced motion ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;transition-delay:0s!important}
  .js [data-reveal],.js .plate[data-reveal] .plate__cap{opacity:1;transform:none}
  .js .plate[data-reveal] .plate__frame{clip-path:none}
  .js .plate[data-reveal] .plate__media{scale:1}
  .js .gridlines i{transform:none}
  .js .cells{background:var(--rule);border-color:var(--rule)}
  .pipeline::after,.pulse::after{display:none}
  .step__dot{animation:none}
  .stamp__ring{animation:none}
  .launcher__cache b{animation:none;transform:scaleX(.6)}
  .js .launcher .launcher__list li{opacity:1;transform:none}
  .plate:hover .plate__media{transform:none}
}

/* ---------- 23. Print ---------- */
@media print{
  body{background:#fff;color:#000;font-size:10.5pt}
  .topline,.masthead,.readbar,.vidctl,.hud,.stamp,.copy,.filters,.toc,.plate--video,.plate--embed,.gridlines,.skip,.actions,.masthead__cta{display:none!important}
  .sect,.doc,.doc-head,.cta,.viewing{padding:18pt 0;background:#fff}
  .doc{grid-template-columns:1fr}
  .plate,.table,.specimen,.entry,.callout,.code,.cell,.step{break-inside:avoid}
  .code{background:#fff;color:#000;border:1px solid #000}
  .code pre{color:#000}
  .js [data-reveal],.js .plate[data-reveal] .plate__cap{opacity:1!important;transform:none!important}
  .js .plate[data-reveal] .plate__frame{clip-path:none!important}
  .js .cells{background:#999;border-color:#999}
  .shelf__bar,.shelf__scrub,.shelf__filter{display:none!important}
  .shelf{display:block;overflow:visible;padding:0}
  .shelf__list{flex-wrap:wrap}
  .app{break-inside:avoid}
  .launcher__cache b{animation:none}
  a{color:#000}
}

/* ---------- 24. Covers: real publisher art as full-bleed 2:3 posters ---------- */
/* Portrait strip tiles live in §19b (.app). Real cover art in /assets/icons. No monograms. */