/* zidos.dev r8: одна плата на всю страницу. Словарь: панель-объект, чип ядра, линия связи, стойка, плата, разъём (гнездо на плате / вилка у раздела), модуль в разъёме, перемычка.
   Смысл цветов: core = ядро и живая связь с хабом; warn = отклонение от штатного (локальный режим, включённый класс действий);
   нейтраль = выключенное, справочное, ещё не наступившее (штрих). Декоративных цветов нет. Движение: только transform/opacity.
   Состояние страницы: body[data-hub] (хаб в сети / недоступен), body[data-port] (выбранный разъём), #topo[data-perm] (перемычка). */
:root{
  --canvas:#EDEEE9;--panel:#F8F8F4;--well:#E6E7E1;--ink:#111418;--ink2:#454C54;--ink3:#5B636B;
  --line:#C7CAC3;--line2:#DBDDD6;
  --core:#2A3FE0;--core-fill:#2A3FE0;--on-core:#fff;--bg-inv:#111418;--tx-inv:#EEF0F2;--tx-inv2:#B4BBC2;--line-inv:#3A4048;
  --warn:#8F4B00;--warn-soft:#F6E4C6;--warn-inv:#F2B24C;
  --board:#111418;--board-line:#3A4048;--board-edge:transparent;--core-inv:#8C99FF;--on-core-inv:#0B0D10;--on-sel:#fff;
  --r1:4px;--r2:6px;--r3:8px;
  --sans:'IBM Plex Sans',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  --mono:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
  --ease:cubic-bezier(.2,.7,.2,1);
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --canvas:#0B0D10;--panel:#12151A;--well:#090B0E;--ink:#EEF0F2;--ink2:#B0B7BE;--ink3:#8F979F;
  --line:#2B3037;--line2:#1E2227;
  --core:#8C99FF;--core-fill:#2A36A8;--on-core:#fff;--bg-inv:#171B22;--tx-inv:#EEF0F2;--tx-inv2:#B0B7BE;--line-inv:#2F353D;
  --warn:#F2B24C;--warn-soft:#3A2A0E;--warn-inv:#F2B24C;--board:#1E242C;--board-line:#4A525E;--board-edge:#39414B;--core-inv:#8C99FF;--on-core-inv:#0B0D10;--on-sel:#0B0D10;color-scheme:dark}}
:root[data-theme="dark"]{
  --canvas:#0B0D10;--panel:#12151A;--well:#090B0E;--ink:#EEF0F2;--ink2:#B0B7BE;--ink3:#8F979F;
  --line:#2B3037;--line2:#1E2227;
  --core:#8C99FF;--core-fill:#2A36A8;--on-core:#fff;--bg-inv:#171B22;--tx-inv:#EEF0F2;--tx-inv2:#B0B7BE;--line-inv:#2F353D;
  --warn:#F2B24C;--warn-soft:#3A2A0E;--warn-inv:#F2B24C;--board:#1E242C;--board-line:#4A525E;--board-edge:#39414B;--core-inv:#8C99FF;--on-core-inv:#0B0D10;--on-sel:#0B0D10;color-scheme:dark}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:80px;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--canvas);color:var(--ink);font:400 1rem/1.6 var(--sans);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;font-variant-numeric:tabular-nums}
h1,h2,h3,p,ul,ol,dl,dd,figure,pre{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding-inline:24px}
.skip{position:absolute;left:12px;top:-60px;background:var(--ink);color:var(--canvas);padding:12px 16px;border-radius:var(--r2);z-index:100;text-decoration:none}
.skip:focus{top:12px}
:focus-visible{outline:2px solid var(--core);outline-offset:3px;border-radius:2px}
.nw{white-space:nowrap}

/* header */
.top{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--canvas) 92%,transparent);backdrop-filter:saturate(1.2) blur(10px);border-bottom:1px solid var(--line)}
.top__in{display:flex;align-items:center;gap:24px;height:64px}
.brand{display:flex;align-items:center;text-decoration:none;min-height:44px;color:var(--ink)}
.brand__name{font-weight:600;font-size:1.1875rem;letter-spacing:-.02em}
.brand__dev{font-family:var(--mono);font-weight:400;color:var(--core);font-size:1rem;letter-spacing:0;margin-left:1px}
.nav{display:flex;gap:4px;margin-left:auto}
.nav a{display:inline-flex;align-items:center;min-height:44px;padding:0 12px;text-decoration:none;color:var(--ink2);font-size:.9375rem;border-radius:var(--r2)}
.top__tools{display:flex;gap:4px}
.iconbtn{display:inline-grid;place-items:center;width:44px;height:44px;background:none;border:0;color:var(--ink);border-radius:var(--r2);cursor:pointer}
.menubtn{display:none}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 22px;border-radius:var(--r2);font:500 1rem/1 var(--sans);text-decoration:none;border:1px solid transparent;cursor:pointer;transition:transform .2s var(--ease)}
.btn--primary{background:var(--ink);color:var(--canvas)}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.cta{display:flex;flex-wrap:wrap;gap:12px}
.dot{display:inline-block;width:8px;height:8px;border-radius:50%;flex:none;margin-right:8px;vertical-align:1px;background:var(--core);transition:background .25s}
.dot--core{background:var(--core)}.dot--warn{background:var(--warn)}
.fine{margin-top:18px;font-size:.9375rem;color:var(--ink2);display:flex;align-items:center}
.fine .dot{margin-right:10px}

/* hero: editorial split */
.hero{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));column-gap:24px;align-items:start;padding-top:44px;padding-bottom:30px}
.hero__head{grid-column:1 / span 7}
.hero__side{grid-column:8 / span 5;padding-top:2px}
.eyebrow{font-size:.9375rem;color:var(--ink3);margin-bottom:16px}
h1{font-weight:500;font-size:clamp(2.375rem,1.3rem + 3vw,3.875rem);line-height:1.02;letter-spacing:-.03em;text-wrap:balance}
.lede{font-size:1.125rem;line-height:1.5;color:var(--ink2);max-width:28em;text-wrap:pretty}
.hero .cta{margin-top:22px}

/* object panel */
.obj{border:1.5px solid var(--ink);border-radius:var(--r3);background:var(--panel);overflow:hidden}
.obj__bar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 16px;padding:8px 20px;min-height:60px;border-bottom:1px solid var(--line)}
.obj__title{font-weight:600;font-size:1rem;text-wrap:balance}
.obj__cap{font-size:.875rem;color:var(--ink3)}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:var(--r2);padding:3px;background:var(--canvas);gap:3px}
.seg__b{display:inline-flex;align-items:center;min-height:44px;padding:0 14px;border:0;border-radius:4px;background:none;color:var(--ink2);font:500 .9375rem/1 var(--sans);cursor:pointer}
.seg__b[aria-pressed="true"]{background:var(--ink);color:var(--canvas)}
.obj__stage{padding:24px 24px 0}
.dia{display:block;width:100%;height:auto;margin:0 auto;overflow:visible}
.dia--t{display:none;max-width:400px}
.dia--t .t-l{font-size:15px}
.dia--w{max-width:880px}
/* foot: state text and the socket fact side by side, no reserved air */
.obj__foot{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:0 32px;padding:14px 24px 16px}
.obj__state{display:grid}
.obj__state p{grid-area:1/1;font-size:1rem;color:var(--ink);text-wrap:pretty}
/* swapped paragraphs: the hidden one is invisible AND out of the tab order (its link is not reachable) */
.obj__state p,.jack p,.perm__state p{transition:opacity .3s var(--ease),visibility 0s}
.obj__state p[aria-hidden="true"],.jack p[aria-hidden="true"],.perm__state p[aria-hidden="true"]{opacity:0;visibility:hidden;pointer-events:none;transition:opacity .3s var(--ease),visibility 0s .3s}
.plats{border-top:1px solid var(--line);padding:16px 24px 18px}
.plats__h{font-size:.9375rem;color:var(--ink2);text-wrap:pretty}
.plats__l{display:flex;flex-wrap:wrap;gap:8px 10px;margin-top:12px}
.plats__l li{display:inline-flex;align-items:center;gap:10px;min-height:44px;padding:0 16px 0 12px;border:1px solid var(--line);border-radius:var(--r2);background:var(--canvas);font-weight:500;font-size:1rem}
.plats__l .ico{fill:none;stroke:var(--ink);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.star{margin-left:1px}
.plats__note{font-size:.875rem;color:var(--ink2);margin-top:12px}

/* drawing vocabulary (svg) */
.dia text{font-family:var(--sans);fill:var(--ink)}
.t-h{font-size:18px;font-weight:600}
.t-s{font-size:16px;fill:var(--ink2)!important}
.t-s--warn{fill:var(--warn)!important;font-weight:500}
.t-l{font-size:16px;fill:var(--core)!important;font-weight:500}
.t-l--warn{fill:var(--warn)!important}
.t-plate{font-size:24px;font-weight:500;text-anchor:middle;fill:var(--on-core)!important}
.t-plate--off{fill:var(--ink2)!important}
.t-slot{font-size:17px;font-weight:500;fill:var(--ink3)!important}
.t-slot--on{fill:var(--ink)!important}
.hub-solid,.app-box{fill:none;stroke:var(--ink);stroke-width:1.5}
.hub-dash{fill:none;stroke:var(--ink3);stroke-width:1.5;stroke-dasharray:6 5}
.chip-live{fill:var(--core-fill)}
.pin-live{fill:var(--on-core);opacity:.7}
.chip-off{fill:none;stroke:var(--ink3);stroke-width:1.5;stroke-dasharray:5 4}
.pin-off{fill:var(--ink3)}
.chip-on{fill:var(--warn-soft);stroke:var(--warn);stroke-width:1.5}
.pin-on{fill:var(--warn)}
.ln-core{fill:none;stroke:var(--core);stroke-width:2}
.ln-dash{fill:none;stroke:var(--ink3);stroke-width:1.5;stroke-dasharray:4 4}
.ln-warn{fill:none;stroke:var(--warn);stroke-width:2;stroke-linecap:round}
.f-core{fill:var(--core)}.f-warn{fill:var(--warn)}
.drop{fill:none;stroke:var(--ink);stroke-width:1.5;transition:stroke .25s var(--ease),stroke-width .25s var(--ease)}
.drop--dash{stroke:var(--ink3);stroke-dasharray:5 4}
.app-box,.hub-solid{transition:stroke .25s var(--ease),stroke-width .25s var(--ease),fill .25s var(--ease)}
.obj[data-node="app"] .app-box{stroke:var(--core);stroke-width:3;fill:color-mix(in srgb,var(--core) 9%,transparent)}
.obj[data-node="app"] .drop--app{stroke:var(--core);stroke-width:3}
.obj[data-node="board"] .drop--app,.obj[data-node="board"] .drop--hub:not(.drop--dash){stroke:var(--core);stroke-width:3}
.dia [class*="st-"]{transition:opacity .4s var(--ease)}
.st-loc{opacity:0}
.obj[data-state="local"] .st-hub{opacity:0}
.obj[data-state="local"] .st-loc{opacity:1}
.slot-live{transform-box:fill-box;transform-origin:center;transform:scale(.97);transition:opacity .4s var(--ease),transform .45s var(--ease)}
.obj[data-state="local"] .slot-live{transform:none}
.pk{animation:pk 2.6s linear infinite}
.pk--v{animation-name:pkv}
@keyframes pk{0%{transform:translateX(0);opacity:0}12%{opacity:1}88%{opacity:1}100%{transform:translateX(268px);opacity:0}}
@keyframes pkv{0%{transform:translateY(0);opacity:0}12%{opacity:1}88%{opacity:1}100%{transform:translateY(80px);opacity:0}}
/* the jumper from the section below is mirrored in the drawing: a marker inside the app node */
.pm{opacity:0;transition:opacity .3s var(--ease)}
.obj[data-perm="on"] .pm{opacity:1}

/* board: the platform under the drawing. Two zones share the drawing's columns (hub 0..500 of 800, app 500..800),
   so the hub stands on the platform zone and the app stands on its own zone with the device socket right under it. */
.board{position:relative;padding:14px 24px 16px;background:var(--board);color:var(--tx-inv);border-top:1.5px solid var(--ink);border-bottom:1px solid var(--board-edge)}
.board::before{content:"";position:absolute;left:0;right:0;top:-1.5px;height:3px;background:var(--core);transform:scaleX(0);transform-origin:left;transition:transform .4s var(--ease)}
.obj[data-node="board"] .board::before{transform:none}
.board__in{max-width:880px;margin:0 auto;display:grid;grid-template-columns:500fr 300fr}
.bz{position:relative;display:grid;gap:10px;align-content:start}
.bz--app{justify-items:center;text-align:center}
.bz--app::before{content:"";position:absolute;left:0;top:-14px;bottom:-16px;border-left:1px dashed var(--board-line)}
.bz__lab{line-height:1.3}
.bz--plat .bz__lab{width:46.2%;text-align:center}
.board__k{display:inline-block;font:500 .9375rem/1.3 var(--mono);color:var(--tx-inv);transition:color .25s}
.obj[data-node="board"] .bz--plat .board__k,.obj[data-node="app"] .bz--app .board__k{color:var(--core-inv)}
.bz__s{font-size:.875rem;line-height:1.4;color:var(--tx-inv2);text-wrap:pretty}
.bz__perm{display:inline-flex;align-items:center;gap:8px}
.lamp{position:relative;width:10px;height:10px;border-radius:50%;border:1.5px solid var(--tx-inv2);flex:none}
.lamp::after{content:"";position:absolute;inset:-1.5px;border-radius:50%;background:var(--warn-inv);opacity:0;transition:opacity .3s}
.obj[data-perm="on"] .lamp::after{opacity:1}
.sw{display:grid}
.sw>span{grid-area:1/1;transition:opacity .3s,color .3s}
.sw>span:last-child{opacity:0;color:var(--warn-inv);font-weight:500}
.obj[data-perm="on"] .sw>span:first-child{opacity:0}
.obj[data-perm="on"] .sw>span:last-child{opacity:1}
.obj[data-perm="on"] .sock--dev[aria-pressed="false"]{border-color:var(--warn-inv);color:var(--warn-inv)}
.board__ports{display:flex;flex-wrap:wrap;gap:8px}
.sock{display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0 14px 0 12px;border:1.5px solid var(--board-line);border-radius:var(--r1);background:transparent;color:var(--tx-inv);font:500 .9375rem/1 var(--mono);white-space:nowrap;cursor:pointer;transition:border-color .2s var(--ease),background .2s var(--ease),color .2s var(--ease)}
.sock[aria-pressed="true"]{background:var(--core-inv);border-color:var(--core-inv);color:var(--on-core-inv)}
.sock:focus-visible{outline-color:var(--core-inv)}
.jack{display:grid;border-left:1px dashed var(--line);padding-left:32px}
.jack p{grid-area:1/1;font-size:1rem;color:var(--ink);text-wrap:pretty}
.jack a{display:inline-block;padding:3px 0;margin:-3px 0;color:var(--core);text-underline-offset:3px;white-space:nowrap}
/* plug at a section head: the same port, seen from the section. Lit when its socket is selected anywhere on the page */
.portbox{display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0 12px 0 14px;border:1.5px solid var(--ink);border-radius:var(--r1);background:var(--canvas);color:var(--ink);font:500 .9375rem/1 var(--mono);white-space:nowrap}
.portbox__i{width:18px;height:14px;flex:none}
.portbox--link{text-decoration:none;transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease)}
.portbox--link.is-sel{background:var(--core);border-color:var(--core);color:var(--on-sel)}
.port__lead{display:block;width:2px;height:22px;background:var(--ink);margin-left:24px;transition:background .2s var(--ease)}
.portbox--link.is-sel+.port__lead{background:var(--core)}
.phead{display:flex;flex-direction:column;align-items:flex-start;margin-bottom:0}
.phead--row{flex-direction:row;flex-wrap:wrap;gap:0 10px}
.phead__g{display:flex;flex-direction:column;align-items:flex-start}
.phead .port__lead{height:26px;margin-left:22px}
.phead+.h2{margin-top:6px}

/* sections */
.sec{padding-top:72px}
.h2{font-weight:500;font-size:clamp(1.875rem,1.25rem + 1.8vw,2.75rem);line-height:1.06;letter-spacing:-.028em;text-wrap:balance;max-width:16em;margin-bottom:28px}

/* mirror of the hub state in section panels */
.mir{display:inline-flex;align-items:center;min-height:44px;padding:0 14px 0 12px;border:1px solid var(--line);border-radius:var(--r2);background:var(--canvas);font:500 .9375rem/1 var(--sans);color:var(--ink2)}
.mir__t{display:grid}
.mir__t>span{grid-area:1/1;transition:opacity .3s}
.mir__t>span:last-child{opacity:0;color:var(--warn)}
body[data-hub="local"] .mir .dot{background:var(--warn)}
body[data-hub="local"] .mir__t>span:first-child{opacity:0}
body[data-hub="local"] .mir__t>span:last-child{opacity:1}

/* safety: jumper on the app-to-device path */
.perm{margin:0}
.path{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.5fr) minmax(0,1fr);align-items:start;padding:28px 24px 8px}
.node{position:relative;display:flex;flex-direction:column;justify-content:center;gap:4px;min-height:160px;padding:0 20px;border:1.5px solid var(--ink);border-radius:var(--r3);background:var(--canvas);overflow:hidden}
.node::after{content:"";position:absolute;inset:0;background:var(--warn-soft);opacity:0;transition:opacity .3s var(--ease);pointer-events:none}
.node>span{position:relative;z-index:1}
.node__h{font-weight:600;font-size:1.125rem}
.node__s{font-size:.9375rem;color:var(--ink2)}
.perm.is-on .node--dev{border-color:var(--warn)}
.perm.is-on .node--dev::after{opacity:1}
.wire{position:relative;display:flex;flex-direction:column;align-items:center}
.wire__lab{display:flex;align-items:center;gap:10px;height:28px;margin-bottom:8px}
.wire__row{position:relative;width:100%;height:72px;display:flex;justify-content:center;align-items:center}
.wire__row::before{content:"";position:absolute;left:0;right:0;top:50%;border-top:2px dashed var(--ink3);margin-top:-1px}
.wire__row::after{content:"";position:absolute;left:0;right:0;top:50%;height:2px;margin-top:-1px;background:var(--warn);transform:scaleX(0);transform-origin:left;transition:transform .5s var(--ease)}
.perm.is-on .wire__row::after{transform:none}
.perm__name{font-weight:600;font-size:1rem}
.perm__lamp{position:relative;width:12px;height:12px;border-radius:50%;border:1.5px solid var(--ink3);background:transparent}
.perm__lamp::after{content:"";position:absolute;inset:-1.5px;border-radius:50%;background:var(--warn);opacity:0;transition:opacity .3s}
.perm.is-on .perm__lamp::after{opacity:1}
.jmp{position:relative;z-index:1;display:block;width:144px;height:80px;padding:0;border:1.5px solid var(--ink);border-radius:var(--r2);background:var(--panel);box-shadow:0 0 0 8px var(--panel);cursor:pointer;touch-action:manipulation;transition:border-color .3s var(--ease)}
.jmp[aria-checked="true"]{border-color:var(--warn)}
.jmp__pin{position:absolute;top:48px;width:14px;height:14px;border-radius:50%;border:2px solid var(--ink);background:var(--canvas)}
.jmp__pin:nth-child(1){left:42px}.jmp__pin:nth-child(2){left:86px}
.jmp__cap{position:absolute;left:35px;top:10px;width:72px;height:26px;border-radius:5px;border:1.5px dashed var(--ink3);background:transparent;transition:transform .45s cubic-bezier(.3,1.3,.45,1),background .3s var(--ease),border-color .3s var(--ease)}
.jmp:active .jmp__cap{transform:translateY(4px)}
.jmp[aria-checked="true"] .jmp__cap{transform:translateY(32px);border-style:solid;border-color:var(--warn);background:var(--warn-soft)}
.jmp[aria-checked="true"]:active .jmp__cap{transform:translateY(30px)}
.jmp__st{display:grid;margin-top:14px;font-size:.875rem;color:var(--ink2);text-align:center;font-family:var(--mono)}
.jmp__st span{grid-area:1/1;transition:opacity .3s}
.jmp__st span:last-child{opacity:0;color:var(--warn)}
.perm.is-on .jmp__st span:first-child{opacity:0}
.perm.is-on .jmp__st span:last-child{opacity:1}
.facts{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.5fr) minmax(0,1fr);gap:0 24px;padding:24px 24px 4px;align-items:start}
.facts li{font-size:1rem;line-height:1.5;color:var(--ink2);padding-left:16px;position:relative;text-wrap:pretty}
.facts li::before{content:"";position:absolute;left:0;top:.62em;width:6px;height:6px;border-radius:50%;background:var(--ink3)}
.perm__state{display:grid;grid-template-columns:1fr;border-top:1px solid var(--line);margin-top:20px;padding-top:14px}
.perm__state p{grid-area:1/1;font-size:1rem;color:var(--ink);text-wrap:pretty}

/* rigs: section panels built from the same board. Modules either stand on the board (stands, like the hub and the app)
   or sit inserted into its slots. A selected socket lights its module the way a socket lights a node in the drawing. */
.mod{position:relative;border:1.5px solid var(--ink);border-radius:var(--r3);background:var(--panel);transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.mod.is-sel{border-color:var(--core);box-shadow:inset 0 0 0 1.5px var(--core)}
.mod__n{display:block;font-weight:600;font-size:1.125rem;line-height:1.2}
.mod__w{display:block;font-size:.9375rem;color:var(--ink2);line-height:1.3;margin-top:4px}
/* move: two sources stand on the board; a trace on the board joins their stands to the import socket */
.rig__stage{display:grid;grid-template-columns:1fr 1fr;gap:24px;padding:24px 24px 32px}
.mod--stand{padding:18px 20px;min-height:96px;display:flex;flex-direction:column;justify-content:center}
.mod--stand::after{content:"";position:absolute;left:50%;top:100%;width:1.5px;height:32px;margin-left:-1px;background:var(--ink);transition:background .2s var(--ease),width .2s var(--ease)}
.mod--stand.is-sel::after{background:var(--core);width:3px;margin-left:-1.5px}
.band{position:relative;display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);align-items:center;gap:16px;padding:14px 24px 16px;background:var(--board);color:var(--tx-inv);border-top:1.5px solid var(--ink);border-bottom:1px solid var(--board-edge)}
.band__trace{position:absolute;top:-1.5px;left:calc(24px + (100% - 72px) / 4);right:calc(24px + (100% - 72px) / 4);height:3px;background:var(--core);transition:background .3s var(--ease)}
body[data-hub="local"] .band__trace{background:var(--warn-inv)}
.band__k{font-size:.875rem;line-height:1.4;color:var(--tx-inv2);text-wrap:pretty}
.band__k .board__k{display:block;margin-bottom:2px}
.band__c{display:flex;justify-content:center}
.corechip{justify-self:end}
.corechip__s{display:block;width:156px;height:48px;overflow:visible}
.corechip__s g{transition:opacity .35s var(--ease)}
.ch-loc{opacity:0}
body[data-hub="local"] .ch-hub{opacity:0}
body[data-hub="local"] .ch-loc{opacity:1}
.corechip__t{font:500 15px/1 var(--sans);fill:var(--on-core)}
.corechip__t--on{fill:var(--ink)}
.rig__foot{grid-template-columns:minmax(0,1.3fr) minmax(0,1fr)}
.rig__p{font-size:1.0625rem;color:var(--ink);text-wrap:pretty}
.rig__cap{font-size:.875rem;color:var(--ink3);text-wrap:pretty;border-left:1px dashed var(--line);padding-left:32px}
/* dev: three modules inserted into three slots of one board */
.slots{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-template-rows:auto auto;padding-top:24px}
.mod--card{grid-row:1;align-self:stretch;z-index:1;margin:0 12px -20px;padding:18px 20px 36px}
.mod--card:nth-child(1){margin-left:24px}
.mod--card:nth-child(3){margin-right:24px}
.mod__k{font:500 1.125rem/1.3 var(--mono);color:var(--core);letter-spacing:-.01em}
.mod__t{font-size:1.0625rem;line-height:1.5;color:var(--ink);text-wrap:pretty;margin-top:6px}
.fields{display:grid;margin-top:16px;border-top:1px solid var(--line)}
.fields__r{display:grid;grid-template-columns:minmax(0,8.5rem) minmax(0,1fr);align-items:baseline;gap:0 12px;min-height:40px;padding:8px 0;border-bottom:1px solid var(--line)}
.fields dt{font:400 .875rem/1.4 var(--mono);color:var(--ink2)}
.fields dd{margin:0;min-width:0;font-size:.9375rem;line-height:1.4;color:var(--ink);text-wrap:pretty}
.slot{grid-row:2;display:flex;justify-content:center;align-items:flex-end;padding:34px 12px 16px;background:var(--board);border-top:1.5px solid var(--ink);position:relative}
.slot--1{padding-left:24px}.slot--3{padding-right:24px}
.slot::before{content:"";position:absolute;left:0;right:0;top:-1.5px;height:3px;background:var(--core);transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease)}
.slot.is-sel::before{transform:none}

/* goal: statement + empty bench sheet */
.goal{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));column-gap:24px;align-items:start;padding-top:96px}
.goal__txt{grid-column:1 / span 7}
.sheet{grid-column:8 / span 5}
.goal__k{font:500 .9375rem/1 var(--mono);color:var(--core);margin-bottom:16px}
.goal__t{font-weight:500;font-size:clamp(1.75rem,1.1rem + 2.4vw,3rem);line-height:1.08;letter-spacing:-.03em;text-wrap:balance}
.goal__s{font-size:1.125rem;color:var(--ink2);margin-top:18px;max-width:30em;text-wrap:pretty}
.sheet{border-top:1.5px solid var(--ink);padding-top:14px;margin-top:8px}
.sheet__h{font:500 .9375rem/1 var(--mono);color:var(--ink);margin-bottom:10px}
.sheet__r{display:grid;grid-template-columns:minmax(0,7.5rem) minmax(0,1fr);gap:0 16px;align-items:center;min-height:48px;border-top:1px solid var(--line)}
.sheet__k{font:500 .9375rem/1.3 var(--mono);color:var(--ink2)}
.sheet__v{font-size:1.0625rem;color:var(--ink);padding:8px 0;text-wrap:pretty}
.sheet__v--empty{display:flex;align-items:center;min-height:40px;padding:0 12px;border:1.5px dashed var(--ink3);border-radius:var(--r1);color:var(--ink3);font:500 .9375rem/1 var(--mono);margin:4px 0}
.sheet__cap{font-size:.875rem;color:var(--ink3);margin-top:12px;text-wrap:pretty}

/* status: inverted band */
.status{margin-top:96px;background:var(--bg-inv);color:var(--tx-inv)}
.status__in{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));column-gap:24px;align-items:start;padding-top:56px;padding-bottom:60px}
.status__txt{grid-column:1 / span 7;display:grid;row-gap:20px;align-content:start}
.status__h{font-weight:500;font-size:clamp(1.875rem,1.2rem + 2.4vw,3.25rem);line-height:1.04;letter-spacing:-.03em;text-wrap:balance;max-width:18em}
.status__p{color:var(--tx-inv2);font-size:1.0625rem}
.status__plats{margin-top:12px;padding-top:16px;border-top:1px solid var(--line-inv)}
.status__k{font:500 .9375rem/1 var(--mono);color:var(--tx-inv)}
.plats__l--inv li{border-color:var(--line-inv);background:transparent;color:var(--tx-inv)}
.plats__l--inv .ico{stroke:var(--tx-inv)}
.status__note{font-size:.875rem;color:var(--tx-inv2);margin-top:12px;max-width:34em}
.sheet--inv{grid-column:8 / span 5;margin-top:10px;--ink:var(--tx-inv);--ink2:var(--tx-inv2);--ink3:var(--tx-inv2);--line:var(--line-inv)}
.sheet--inv .sheet__r{min-height:44px;grid-template-columns:minmax(0,9rem) minmax(0,1fr)}

.foot{border-top:1px solid var(--line)}
.foot__in{display:flex;flex-wrap:wrap;gap:12px 32px;justify-content:space-between;padding-top:20px;padding-bottom:24px;font-size:.9375rem;color:var(--ink2)}
.foot a{display:inline-block;padding:10px 0;text-underline-offset:3px}
.foot__r{display:flex;gap:24px;align-items:center}

.js .reveal{opacity:0;transform:translateY(10px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.js .reveal.in{opacity:1;transform:none}

/* hover only where a pointer can hover: no sticky hover after a tap */
@media (hover:hover){
  .nav a:hover{color:var(--ink)}
  .iconbtn:hover{background:var(--line2)}
  .btn--primary:hover{transform:translateY(-1px)}
  .btn--ghost:hover{border-color:var(--ink)}
  .seg__b:hover{color:var(--ink)}
  .sock:hover{border-color:var(--tx-inv)}
  .portbox--link:hover{background:var(--ink);color:var(--canvas)}
  .mod.is-hov{border-color:var(--ink3)}
}

@media (max-width:1000px){
  .hero__head{grid-column:1 / -1}.hero__side{grid-column:1 / -1;margin-top:20px}
  .goal__txt,.sheet,.status__txt{grid-column:1 / -1}
  .sheet{margin-top:32px}
  .slots{grid-template-columns:repeat(3,minmax(0,1fr))}
  .mod--card{padding:16px 16px 34px}
  .fields__r{grid-template-columns:1fr;gap:2px 0;align-items:start}
}
@media (max-width:900px){
  .obj__stage{padding-inline:12px}
  .board{padding-inline:12px}
  .bz--app::before{top:-14px}
  .sock{font-size:.875rem;padding:0 10px;gap:6px}
  .board__ports{gap:6px}
  .facts{grid-template-columns:repeat(3,minmax(0,1fr))}
  .obj__foot{grid-template-columns:1fr;gap:10px 0}
  .jack{border-left:0;padding-left:0;border-top:1px dashed var(--line);padding-top:10px}
  .rig__foot{grid-template-columns:1fr}
  .rig__cap{border-left:0;padding-left:0;border-top:1px dashed var(--line);padding-top:10px}
}
@media (max-width:820px){
  .menubtn{display:inline-grid}
  .top__tools{margin-left:auto}
  .nav{display:none;position:absolute;left:0;right:0;top:64px;flex-direction:column;background:var(--canvas);border-bottom:1px solid var(--line);padding:8px 24px 16px;margin:0}
  .nav.open{display:flex}
  .nav a{padding:0;min-height:48px;font-size:1.0625rem}
}
@media (max-width:720px){
  .sec{padding-top:56px}.goal{padding-top:72px}
  .dia--w{display:none}.dia--t{display:block}
  .obj__stage{padding:18px 16px 0}
  .obj__foot{grid-template-columns:1fr;gap:10px 0;padding:12px 16px 16px}
  .jack{border-left:0;padding-left:0;border-top:1px dashed var(--line);padding-top:10px}
  /* narrow: the block takes the height of the visible paragraph only */
  .obj__state,.jack,.perm__state{position:relative}
  .obj__state p[aria-hidden="true"],.jack p[aria-hidden="true"],.perm__state p[aria-hidden="true"]{position:absolute;inset:auto 0 0 0}
  .obj__bar{padding:8px 16px 10px}
  .seg{width:100%}.seg__b{flex:1;justify-content:center}
  .plats{padding:14px 16px 16px}
  /* the tall drawing drops the app in the centre: the app zone goes first, centred, the platform zone under a dashed seam */
  .board{padding:14px 16px 16px}
  .board__in{grid-template-columns:1fr;gap:14px}
  .bz--app{order:1;justify-items:center}
  .bz--app::before{display:none}
  .bz--plat{order:2;padding-top:14px;border-top:1px dashed var(--board-line)}
  .bz--plat .bz__lab{width:auto;text-align:left}
  .sock{font-size:.9375rem;padding:0 14px 0 12px;gap:8px}
  .board__ports{gap:8px}
  .port__lead{margin-left:20px}
  .path{grid-template-columns:minmax(0,1fr);padding:20px 16px 8px}
  .node{min-height:96px;align-items:center;text-align:center}
  .wire{padding:14px 0}
  .wire::before{content:"";position:absolute;left:50%;top:0;bottom:0;border-left:2px dashed var(--ink3);margin-left:-1px}
  .wire::after{content:"";position:absolute;left:50%;top:0;bottom:0;width:2px;margin-left:-1px;background:var(--warn);transform:scaleY(0);transform-origin:top;transition:transform .5s var(--ease)}
  .perm.is-on .wire::after{transform:none}
  .wire__row::before,.wire__row::after{display:none}
  .wire__lab{background:var(--panel);position:relative;z-index:1;padding:0 8px;height:auto;min-height:28px}
  .jmp__st{position:relative;z-index:1;background:var(--panel);padding:0 10px}
  .facts{grid-template-columns:1fr;gap:10px;padding:16px 16px 0}
  .perm__state{padding-inline:16px}
  .rig__stage{grid-template-columns:1fr 1fr;gap:12px;padding:18px 16px 28px}
  .mod--stand::after{height:28px}
  .mod--stand{min-height:0;padding:14px 14px}
  .mod__n{font-size:1.0625rem}
  .band{grid-template-columns:auto minmax(0,1fr);gap:12px 16px;padding:14px 16px 16px}
  .band__trace{left:calc(16px + (100% - 44px) / 4);right:calc(16px + (100% - 44px) / 4)}
  .band__k{grid-column:1 / -1}
  .band__c{grid-column:1;justify-content:flex-start}
  .corechip{grid-column:2;justify-self:end}
  .rig__foot{grid-template-columns:1fr}
  .rig__cap{border-left:0;padding-left:0;border-top:1px dashed var(--line);padding-top:10px}
  .slots{grid-template-columns:1fr;grid-template-rows:auto;padding-top:18px}
  .mod--card{grid-row:auto;margin:0 16px -20px;padding:16px 16px 34px}
  .fields__r{grid-template-columns:minmax(0,7.5rem) minmax(0,1fr);align-items:baseline}
  .mod--card:nth-child(1){margin-left:16px}
  .mod--card:nth-child(3){margin-right:16px}
  .mod--card:nth-child(1){grid-row:1}.mod--card:nth-child(2){grid-row:3}.mod--card:nth-child(3){grid-row:5}
  .slot--1{grid-row:2}.slot--2{grid-row:4}.slot--3{grid-row:6}
  .slot{padding:34px 16px 16px;margin-bottom:0;justify-content:flex-start}
  .slot--1,.slot--2{margin-bottom:18px;border-bottom:1.5px solid var(--ink)}
  .mod--card{align-self:auto}
}
@media (max-width:600px){
  .wrap{padding-inline:16px}
  .hero{padding-top:28px;padding-bottom:22px}
  .cta{flex-direction:column}.cta .btn{width:100%}
  .status{margin-top:72px}
  .status__in{padding-top:44px;padding-bottom:48px}
  .h2{max-width:none}
  .sheet__r{grid-template-columns:minmax(0,6.5rem) minmax(0,1fr)}
  .sheet--inv .sheet__r{grid-template-columns:minmax(0,7.5rem) minmax(0,1fr)}
  .seg__b{font-size:.875rem;padding:0 8px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .js .reveal{opacity:1;transform:none}
}