html{scroll-behavior:smooth}

/* ============================================================
   Machine Room — design tokens
   Palette taken from a rack door, silkscreen and structured
   cabling: cool grey paint, near-black ink, one working blue,
   one signal amber, one status green.
   ============================================================ */
/* ---------- light (default) ---------- */
:root{
  color-scheme:light;
  --paper:#eceff1;
  --paper-2:#f7f9fa;
  --raise:#ffffff;
  --ink:#0d1317;
  --ink-2:#414e58;
  --ink-3:#6b7883;
  --ink-code:#16222b;
  --line:#c4ced4;
  --line-2:#dbe2e6;
  --line-3:#b9c6ce;
  --fill:#e6eaed;
  --subtle:#f1f4f6;
  --bar-1:#f2f5f7;
  --bar-2:#e9edf0;
  --blue:#1b45c8;
  --blue-dk:#12308c;
  --blue-line:rgba(27,69,200,.34);
  --amber:#c1701c;
  --ok:#0a7a55;
  --warn-bg:#f6f1ea;
  --warn-br:#ddc3a4;
  --warn-tx:#95531a;
  --sel-bg:#c9d6ff;
  --sel-tx:#0b1a44;
  --head-bg:rgba(236,239,241,.88);
  --grid:rgba(255,255,255,.028);
  --hl:rgba(255,255,255,.9);
  --band-edge:transparent;
  --dark:#0d1317;
  --dark-2:#131b21;
  --dark-line:#2b3841;
  --dark-line-2:#4a5b66;
  --dark-ink:#e8eef1;
  --dark-ink-2:#93a4ae;
  --dgm-blue:#5f7ce0;
  --dgm-line:#33424c;
  --dgm-amber:#d99a52;
  --dgm-lbl-hi:#c9d4da;
  --jack-hi:#243038;
  --jack-lo:#0b1116;
  --jack-hole:#050a0d;
  --jack-pin-1:#b98b3e;
  --jack-pin-2:#e0bb72;

  --font-display:"Archivo","Helvetica Neue",Arial,sans-serif;
  --font-body:"Newsreader",Georgia,"Times New Roman",serif;
  --font-mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --wrap:1180px;
  --pad:clamp(20px,4vw,44px);
  --r:2px;
  --header-h:62px;
  --ease:cubic-bezier(.2,.7,.3,1);
}

/* ---------- dark: follows the OS unless a choice is stored ---------- */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme:dark;
    --paper:#0e1418;
    --paper-2:#151d23;
    --raise:#1a242b;
    --ink:#e6edf1;
    --ink-2:#a9b8c1;
    --ink-3:#8a9aa5;
    --ink-code:#dbe6ec;
    --line:#2a363e;
    --line-2:#232e35;
    --line-3:#3a4a54;
    --fill:#1d272e;
    --subtle:#182128;
    --bar-1:#1a232a;
    --bar-2:#141c22;
    --blue:#8aa3ff;
    --blue-dk:#a9bcff;
    --blue-line:rgba(138,163,255,.42);
    --amber:#e0a45f;
    --ok:#47c99a;
    --warn-bg:#241c14;
    --warn-br:#4a3a26;
    --warn-tx:#e9b273;
    --sel-bg:#2b3f7a;
    --sel-tx:#eaf0ff;
    --head-bg:rgba(14,20,24,.86);
    --grid:rgba(255,255,255,.035);
    --hl:rgba(255,255,255,.07);
    --band-edge:#243139;
    --dark:#0a0f12;
    --dark-2:#0f161b;
    --dark-line:#263139;
    --dark-line-2:#41525c;
    --dark-ink:#e8eef1;
    --dark-ink-2:#8b9ca6;
    --dgm-blue:#7c9bff;
    --dgm-line:#33424c;
    --dgm-amber:#e0a45f;
    --dgm-lbl-hi:#cbd6dd;
    --jack-hi:#243038;
    --jack-lo:#0b1116;
    --jack-hole:#050a0d;
    --jack-pin-1:#b98b3e;
    --jack-pin-2:#e0bb72;
  }
}

/* ---------- explicit choice from the toggle ---------- */
:root[data-theme="dark"] {
  color-scheme:dark;
  --paper:#0e1418;
  --paper-2:#151d23;
  --raise:#1a242b;
  --ink:#e6edf1;
  --ink-2:#a9b8c1;
  --ink-3:#8a9aa5;
  --ink-code:#dbe6ec;
  --line:#2a363e;
  --line-2:#232e35;
  --line-3:#3a4a54;
  --fill:#1d272e;
  --subtle:#182128;
  --bar-1:#1a232a;
  --bar-2:#141c22;
  --blue:#8aa3ff;
  --blue-dk:#a9bcff;
  --blue-line:rgba(138,163,255,.42);
  --amber:#e0a45f;
  --ok:#47c99a;
  --warn-bg:#241c14;
  --warn-br:#4a3a26;
  --warn-tx:#e9b273;
  --sel-bg:#2b3f7a;
  --sel-tx:#eaf0ff;
  --head-bg:rgba(14,20,24,.86);
  --grid:rgba(255,255,255,.035);
  --hl:rgba(255,255,255,.07);
  --band-edge:#243139;
  --dark:#0a0f12;
  --dark-2:#0f161b;
  --dark-line:#263139;
  --dark-line-2:#41525c;
  --dark-ink:#e8eef1;
  --dark-ink-2:#8b9ca6;
  --dgm-blue:#7c9bff;
  --dgm-line:#33424c;
  --dgm-amber:#e0a45f;
  --dgm-lbl-hi:#cbd6dd;
  --jack-hi:#243038;
  --jack-lo:#0b1116;
  --jack-hole:#050a0d;
  --jack-pin-1:#b98b3e;
  --jack-pin-2:#e0bb72;
}


*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:1.0625rem;
  line-height:1.62;
  font-optical-sizing:auto;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg{max-width:100%}
::selection{background:var(--sel-bg);color:var(--sel-tx)}

/* ---------- type primitives ---------- */
.mono{font-family:var(--font-mono);font-size:.75rem;letter-spacing:.04em}
.eyebrow{
  font-family:var(--font-mono);
  font-size:.6875rem;
  font-weight:500;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--ink-3);
  margin:0;
  display:flex;align-items:center;gap:.6em;
}
.eyebrow::before{
  content:"";width:18px;height:1px;background:var(--blue);flex:none;
}
.eyebrow.on-dark{color:var(--dark-ink-2)}
.eyebrow.on-dark::before{background:var(--amber)}

h1,h2,h3,h4{
  font-family:var(--font-display);
  font-variation-settings:"wdth" 112;
  font-weight:640;
  letter-spacing:-.025em;
  line-height:1.06;
  margin:0;
  text-wrap:balance;
}
a{color:inherit}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--pad)}
.rule{height:1px;background:var(--line);border:0;margin:0}

/* ---------- skip link ---------- */
.skip{
  position:absolute;left:-9999px;top:0;z-index:100;
  background:var(--ink);color:var(--paper);padding:10px 16px;
  font-family:var(--font-mono);font-size:.8rem;text-decoration:none;
}
.skip:focus{left:12px;top:12px}

/* ---------- header ---------- */
.site-head{
  position:sticky;top:0;z-index:50;
  background:var(--head-bg);
  backdrop-filter:blur(10px) saturate(140%);
  -webkit-backdrop-filter:blur(10px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.site-head__in{
  max-width:var(--wrap);margin:0 auto;padding:0 var(--pad);
  height:var(--header-h);
  display:flex;align-items:center;gap:28px;
}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:none}
.brand__mark{
  width:15px;height:15px;border:1.5px solid var(--ink);border-radius:1px;
  display:grid;place-items:center;flex:none;
}
.brand__mark::after{content:"";width:5px;height:5px;background:var(--blue);display:block}
.brand__word{
  font-family:var(--font-display);
  font-variation-settings:"wdth" 118;
  font-weight:660;font-size:.8125rem;letter-spacing:.11em;text-transform:uppercase;
}
.site-nav{margin-left:auto;display:flex;align-items:center;gap:2px}
.site-nav a{
  font-family:var(--font-mono);
  font-size:.74rem;letter-spacing:.05em;text-transform:uppercase;
  text-decoration:none;color:var(--ink-2);
  padding:8px 11px;border-radius:var(--r);
  border:1px solid transparent;
  transition:color .18s,background .18s,border-color .18s;
}
.site-nav a:hover{color:var(--ink);background:var(--fill)}
.site-nav a[aria-current="true"]{color:var(--ink);border-color:var(--line);background:var(--paper-2)}
.head-git{
  margin-left:6px;padding-left:16px;border-left:1px solid var(--line);
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.05em;
  text-decoration:none;color:var(--ink-2);display:flex;align-items:center;gap:7px;
}
.head-git:hover{color:var(--blue)}
.head-git .dot{width:6px;height:6px;border-radius:50%;background:var(--ok)}

/* ---------- pages ---------- */to{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{scroll-behavior:auto!important}
}

/* ---------- hero ---------- */
.hero{padding:clamp(40px,6vw,84px) 0 clamp(32px,4vw,56px)}
.hero__grid{
  display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);
  gap:clamp(28px,4vw,56px);align-items:start;
}
.hero h1{
  font-size:clamp(2.5rem,5.3vw,4.15rem);
  margin:20px 0 0;
  letter-spacing:-.035em;
}
.hero h1 em{
  font-family:var(--font-body);font-style:italic;font-weight:400;
  font-size:.94em;letter-spacing:-.01em;
}
.hero__deck{
  font-size:clamp(1.0625rem,1.5vw,1.1875rem);
  line-height:1.6;color:var(--ink-2);max-width:44ch;
  margin:22px 0 0;
}
.hero__acts{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.btn{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:.75rem;font-weight:500;
  letter-spacing:.08em;text-transform:uppercase;text-decoration:none;
  padding:13px 18px;border-radius:var(--r);border:1px solid var(--ink);
  transition:background .18s,color .18s,transform .18s,border-color .18s;
}
.btn--solid{background:var(--ink);color:var(--paper-2)}
.btn--solid:hover{background:var(--blue);border-color:var(--blue)}
.btn--ghost{background:transparent;color:var(--ink)}
.btn--ghost:hover{background:var(--ink);color:var(--paper-2)}
.btn .arw{transition:transform .2s var(--ease)}
.btn:hover .arw{transform:translateX(3px)}
.hero__meta{
  margin-top:36px;display:flex;flex-wrap:wrap;gap:8px 22px;
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.03em;color:var(--ink-3);
}
.hero__meta span{display:flex;align-items:center;gap:7px}
.hero__meta i{width:5px;height:5px;background:var(--ink-3);border-radius:50%;display:block}
.hero__meta i.live{background:var(--ok)}

/* ---------- patch panel (signature) ---------- */
.panel{
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--r);
  box-shadow:0 1px 0 var(--hl) inset,0 12px 30px -22px rgba(13,19,23,.5);
  overflow:hidden;
}
.panel__bar{
  display:flex;justify-content:space-between;align-items:center;
  padding:9px 13px;border-bottom:1px solid var(--line);
  font-family:var(--font-mono);font-size:.625rem;letter-spacing:.13em;
  text-transform:uppercase;color:var(--ink-3);
  background:linear-gradient(var(--bar-1),var(--bar-2));
}
.panel__bar b{font-weight:500;color:var(--ink-2)}
.ports{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:1px;background:var(--line);
}
.port{
  display:block;text-decoration:none;background:var(--paper-2);
  padding:16px 13px 14px;
  transition:background .18s;
}
.port:hover,.port:focus-visible{background:var(--raise)}
.port:focus-visible{outline:2px solid var(--blue);outline-offset:-2px}
.jack{
  width:46px;height:33px;border-radius:3px;position:relative;
  background:linear-gradient(var(--jack-hi),var(--dark-2) 60%,var(--jack-lo));
  box-shadow:inset 0 1px 0 rgba(255,255,255,.16),0 1px 1px rgba(13,19,23,.22);
  display:block;transition:transform .2s var(--ease);
}
.port:hover .jack{transform:translateY(-1px)}
.jack::before{
  content:"";position:absolute;left:11px;top:7px;width:24px;height:17px;
  border-radius:1px;background:var(--jack-hole);
  box-shadow:inset 0 2px 4px rgba(0,0,0,.9),inset 0 1px 0 rgba(255,255,255,.05);
}
.jack::after{
  content:"";position:absolute;left:15px;top:14px;width:16px;height:3px;
  background:linear-gradient(90deg,var(--jack-pin-1),var(--jack-pin-2),var(--jack-pin-1));opacity:.85;border-radius:1px;
}
.led{
  position:absolute;right:5px;top:5px;width:4px;height:4px;border-radius:50%;
  background:var(--ok);box-shadow:0 0 5px rgba(10,122,85,.85);
  transition:background .18s,box-shadow .18s;
}
.port:hover .led{background:var(--amber);box-shadow:0 0 6px rgba(193,112,28,.95)}
.port__num{
  display:block;margin-top:13px;
  font-family:var(--font-mono);font-size:.625rem;letter-spacing:.12em;color:var(--ink-3);
}
.port__label{
  display:block;margin-top:2px;
  font-family:var(--font-display);font-variation-settings:"wdth" 104;
  font-weight:600;font-size:.875rem;letter-spacing:-.01em;line-height:1.25;
}
.port:hover .port__label{color:var(--blue)}
.panel__foot{
  display:flex;justify-content:space-between;align-items:center;
  padding:9px 13px;border-top:1px solid var(--line);
  font-family:var(--font-mono);font-size:.625rem;letter-spacing:.1em;
  text-transform:uppercase;color:var(--ink-3);background:var(--subtle);
}
.panel__foot span{display:flex;align-items:center;gap:7px}
.panel__foot i{width:5px;height:5px;border-radius:50%;background:var(--ok)}

/* ---------- sections ---------- */
.sec{padding:clamp(36px,5vw,64px) 0}
.sec__head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;margin-bottom:26px;
}
.sec h2{font-size:clamp(1.35rem,2.4vw,1.85rem);margin-top:12px}
.sec__link{
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.06em;
  text-transform:uppercase;text-decoration:none;color:var(--blue-dk);
  padding-bottom:3px;border-bottom:1px solid var(--blue-line);
  white-space:nowrap;
}
.sec__link:hover{color:var(--blue);border-bottom-color:var(--blue)}

/* entry rows: numbered because a rack is numbered */
.rows{border-top:1px solid var(--line)}
.row{
  display:grid;grid-template-columns:44px minmax(0,1fr) auto;
  gap:20px;align-items:baseline;
  padding:20px 4px;border-bottom:1px solid var(--line);
  text-decoration:none;transition:background .18s,padding .2s var(--ease);
}
.row:hover{background:var(--paper-2);padding-left:12px;padding-right:12px}
.row__no{
  font-family:var(--font-mono);font-size:.6875rem;letter-spacing:.1em;color:var(--ink-3);
  padding-top:.45em;
}
.row__t{
  font-family:var(--font-display);font-variation-settings:"wdth" 104;
  font-weight:600;font-size:clamp(1.02rem,1.9vw,1.24rem);letter-spacing:-.015em;line-height:1.25;
}
.row__d{color:var(--ink-2);font-size:.95rem;line-height:1.5;margin-top:4px;max-width:60ch}
.row__meta{
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.04em;color:var(--ink-3);
  white-space:nowrap;padding-top:.5em;text-align:right;
}
.row:hover .row__t{color:var(--blue)}

/* ---------- dark band ---------- */
.band{
  background:var(--dark);color:var(--dark-ink);
  border-block:1px solid var(--band-edge);
  padding:clamp(44px,6vw,80px) 0;position:relative;overflow:hidden;
}
.band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),
                   linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:44px 44px;
  mask-image:radial-gradient(ellipse at 70% 0%,#000 20%,transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse at 70% 0%,#000 20%,transparent 78%);
}
.band__grid{
  position:relative;display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);
  gap:clamp(28px,5vw,64px);align-items:center;
}
.band h2{color:var(--dark-ink);font-size:clamp(1.5rem,3vw,2.15rem);margin-top:14px}
.band p{color:var(--dark-ink-2);font-size:1.02rem;line-height:1.65;max-width:42ch}
.band .btn--ghost{border-color:var(--dark-line);color:var(--dark-ink)}
.band .btn--ghost:hover{background:var(--dark-ink);border-color:var(--dark-ink);color:var(--dark)}
.diagram{width:100%;height:auto;display:block}
.diagram text{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.04em}
.diagram .ln{stroke:var(--dgm-line);stroke-width:1;fill:none}
.diagram .ln-b{stroke:#5f7ce0;stroke-width:1.2;fill:none}
.diagram .box{fill:var(--dark-2);stroke:var(--dgm-line);stroke-width:1}
.diagram .lbl{fill:var(--dark-ink-2)}
.diagram .lbl-hi{fill:var(--dgm-lbl-hi)}
.diagram .amber{fill:var(--dgm-amber)}

/* ---------- footer ---------- */
.site-foot{
  border-top:1px solid var(--line);background:var(--paper);
  padding:44px 0 34px;margin-top:0;
}
.foot__grid{
  display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:32px;
}
.foot__grid p{color:var(--ink-2);font-size:.92rem;line-height:1.6;margin:12px 0 0;max-width:34ch}
.foot h4{
  font-family:var(--font-mono);font-size:.625rem;font-weight:500;
  letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);
  margin:0 0 12px;font-variation-settings:normal;
}
.foot ul{list-style:none;margin:0;padding:0;display:grid;gap:7px}
.foot a{
  font-family:var(--font-mono);font-size:.75rem;color:var(--ink-2);
  text-decoration:none;letter-spacing:.02em;
}
.foot a:hover{color:var(--blue);text-decoration:underline;text-underline-offset:3px}
.foot__base{
  margin-top:38px;padding-top:16px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-family:var(--font-mono);font-size:.66rem;letter-spacing:.05em;color:var(--ink-3);
}
/* ---------- page head ---------- */
.page-head{padding:clamp(38px,5.5vw,72px) 0 30px}
.page-head h1{font-size:clamp(2.15rem,4.6vw,3.45rem);margin-top:18px;letter-spacing:-.032em}
.page-head__deck{font-size:clamp(1rem,1.5vw,1.1rem);line-height:1.62;color:var(--ink-2);max-width:54ch;margin:20px 0 0}

.note-inline{
  display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:start;
  border:1px dashed var(--line-3);background:var(--subtle);padding:14px 16px;border-radius:var(--r);
  margin-top:6px;
}
.note-inline__tag{
  font-family:var(--font-mono);font-size:.58rem;letter-spacing:.12em;text-transform:uppercase;
  color:var(--amber);border:1px solid var(--warn-br);padding:3px 6px;border-radius:2px;white-space:nowrap;
  margin-top:2px;
}
.note-inline p{margin:0;font-size:.92rem;line-height:1.55;color:var(--ink-2);max-width:78ch}
.note-inline code{font-family:var(--font-mono);font-size:.82em;background:var(--fill);padding:1px 4px;border-radius:2px}

.sec--tight{padding-top:28px;padding-bottom:clamp(48px,6vw,84px)}
.filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:26px}
.chip{
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;
  padding:7px 12px;border:1px solid var(--line);background:transparent;color:var(--ink-2);
  border-radius:var(--r);cursor:pointer;transition:all .16s;
}
.chip:hover{border-color:var(--ink-3);color:var(--ink)}
.chip.is-on{background:var(--ink);border-color:var(--ink);color:var(--paper-2)}
.chip:focus-visible{outline:2px solid var(--blue);outline-offset:2px}

/* ---------- project cards ---------- */
.cards{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r);
  overflow:hidden;
}
.card{background:var(--paper-2);padding:22px 22px 18px;display:flex;flex-direction:column;transition:background .18s}
.card:hover{background:var(--raise)}
.card.is-hidden{display:none}
/* odd number of cards: let the last one span, rather than leave a grey hole */
.cards .card:last-child:nth-child(odd),
.card--wide{grid-column:1/-1}
.card__top{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:13px}
.card__repo{font-family:var(--font-mono);font-size:.7rem;color:var(--ink-3);letter-spacing:.01em}
.card__plat{
  display:flex;align-items:center;gap:5px;font-family:var(--font-mono);
  font-size:.58rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);flex:none;
}
.card__plat i{width:5px;height:5px;border-radius:50%;background:var(--blue);flex:none}
.card__plat--gl i{background:var(--amber)}
.card__fork{
  font-style:normal;font-family:var(--font-mono);font-size:.55rem;letter-spacing:.1em;
  text-transform:uppercase;color:var(--warn-tx);border:1px solid var(--warn-br);background:var(--warn-bg);
  padding:1px 4px;border-radius:2px;margin-left:7px;vertical-align:1px;
}
.card h3{font-size:1.13rem;letter-spacing:-.015em;font-variation-settings:"wdth" 104}
.card p{font-size:.92rem;line-height:1.55;color:var(--ink-2);margin:9px 0 0;flex:1}
.card__stack{display:flex;flex-wrap:wrap;gap:6px;margin-top:16px}
.card__stack span{
  font-family:var(--font-mono);font-size:.6rem;letter-spacing:.05em;color:var(--ink-2);
  border:1px solid var(--line-2);background:var(--fill);padding:2px 6px;border-radius:2px;
}
.card__go{
  margin-top:15px;padding-top:12px;border-top:1px solid var(--line-2);
  display:flex;justify-content:space-between;align-items:center;
  font-family:var(--font-mono);font-size:.66rem;letter-spacing:.06em;color:var(--blue-dk);
  text-transform:uppercase;
}
.card:hover .card__go{color:var(--blue)}

/* ---------- blog index ---------- */
.index-bar{
  display:flex;flex-wrap:wrap;gap:10px 30px;align-items:baseline;
  padding:13px 0;border-top:1px solid var(--ink);border-bottom:1px solid var(--line);
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.07em;
  text-transform:uppercase;color:var(--ink-3);
}
.index-bar b{color:var(--ink);font-weight:500}
.index-bar__note{margin-left:auto}
.postlist{border-top:1px solid var(--line)}
.postcard{
  display:grid;grid-template-columns:94px minmax(0,1fr);gap:26px;
  padding:30px 4px;border-bottom:1px solid var(--line);text-decoration:none;
  transition:background .18s,padding .2s var(--ease);
}
.postcard:hover{background:var(--paper-2);padding-left:12px;padding-right:12px}
.postcard.is-hidden{display:none}
.postcard__date{display:flex;flex-direction:column;padding-top:4px}
.postcard__date b{
  font-family:var(--font-display);font-variation-settings:"wdth" 108;
  font-size:1.95rem;font-weight:600;line-height:1;letter-spacing:-.03em;
}
.postcard__date span{
  font-family:var(--font-mono);font-size:.64rem;letter-spacing:.08em;
  text-transform:uppercase;color:var(--ink-3);margin-top:7px;
}
.postcard__tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:11px}
.postcard__tags i{
  font-style:normal;font-family:var(--font-mono);font-size:.58rem;letter-spacing:.11em;
  text-transform:uppercase;color:var(--ink-3);border:1px solid var(--line);padding:2px 6px;border-radius:2px;
}
.postcard__title{
  display:block;font-family:var(--font-display);font-variation-settings:"wdth" 108;
  font-weight:640;font-size:clamp(1.38rem,2.5vw,1.8rem);letter-spacing:-.026em;line-height:1.12;
  transition:color .18s;
}
.postcard:hover .postcard__title{color:var(--blue)}
.postcard__dek{display:block;margin-top:11px;max-width:68ch;color:var(--ink-2);font-size:.96rem;line-height:1.6}
.postcard__foot{display:flex;align-items:center;gap:14px;margin-top:17px;color:var(--ink-3);font-size:.66rem}
.postcard__lead{flex:1;height:1px;border-top:1px dotted var(--line-3)}
.colophon-line{
  margin:32px 0 0;font-family:var(--font-body);font-style:italic;
  font-size:.95rem;color:var(--ink-3);max-width:60ch;
}
/* ---------- post layout ---------- */
.post-head{padding:clamp(34px,5vw,66px) 0 26px;border-bottom:1px solid var(--line)}
.post-head h1{font-size:clamp(2rem,4.3vw,3.2rem);margin-top:18px;max-width:22ch;letter-spacing:-.032em}
.post-head__dek{font-size:clamp(1.02rem,1.6vw,1.18rem);line-height:1.6;color:var(--ink-2);max-width:58ch;margin:20px 0 0}
.post-meta{
  display:flex;flex-wrap:wrap;gap:8px 22px;margin-top:26px;
  font-family:var(--font-mono);font-size:.66rem;letter-spacing:.06em;
  text-transform:uppercase;color:var(--ink-3);
}
.post-meta b{color:var(--ink-2);font-weight:500}
.post-layout{
  display:grid;grid-template-columns:218px minmax(0,1fr);
  gap:clamp(30px,5vw,68px);
  padding-top:clamp(30px,4vw,50px);padding-bottom:clamp(56px,7vw,96px);align-items:start;
}
.post-rail{position:sticky;top:calc(var(--header-h) + 26px)}
.rail-block + .rail-block{margin-top:26px;padding-top:20px;border-top:1px solid var(--line)}
.rail-block h4{
  font-family:var(--font-mono);font-size:.6rem;font-weight:500;letter-spacing:.14em;
  text-transform:uppercase;color:var(--ink-3);margin:0 0 12px;
  font-variation-settings:normal;
}
.toc{display:grid;gap:1px}
.toc a{
  display:block;font-family:var(--font-mono);font-size:.7rem;line-height:1.4;
  color:var(--ink-2);text-decoration:none;padding:5px 0 5px 11px;
  border-left:1px solid var(--line);transition:color .16s,border-color .16s;
}
.toc a:hover{color:var(--blue);border-left-color:var(--blue)}
.toc a.is-current{color:var(--ink);border-left-color:var(--amber)}
.toc a.lvl3{padding-left:22px;font-size:.66rem;color:var(--ink-3)}
.rail-note{font-size:.78rem;line-height:1.55;color:var(--ink-3);margin:0}
.rail-note code{font-family:var(--font-mono);font-size:.72em;color:var(--ink-2);background:var(--fill);padding:1px 3px;border-radius:2px}

.prose{max-width:70ch;font-size:1.15rem;line-height:1.72;color:var(--ink);counter-reset:sec}
.prose > * + *{margin-top:1.15em}
.prose p{margin:0}
.prose .lede{font-size:1.27rem;line-height:1.6;color:var(--ink)}
.prose h2{
  counter-increment:sec;display:flex;gap:.62em;align-items:baseline;
  font-size:clamp(1.3rem,2.2vw,1.56rem);line-height:1.16;letter-spacing:-.02em;
  margin-top:2.5em;padding-top:.9em;border-top:1px solid var(--line);
  scroll-margin-top:calc(var(--header-h) + 20px);
}
.prose h2::before{
  content:counter(sec,decimal-leading-zero);flex:none;transform:translateY(-.18em);
  font-family:var(--font-mono);font-size:.68rem;font-weight:500;letter-spacing:.06em;color:var(--amber);
}
.prose h2.plain{counter-increment:none;border-top:0;padding-top:0;margin-top:2.2em}
.prose h2.plain::before{display:none}
.prose h3{
  font-family:var(--font-body);font-variation-settings:normal;font-weight:600;
  font-size:1.16rem;letter-spacing:0;line-height:1.35;margin-top:1.95em;
  scroll-margin-top:calc(var(--header-h) + 20px);
}
.prose h4{
  font-family:var(--font-mono);font-size:.68rem;font-weight:500;letter-spacing:.11em;
  text-transform:uppercase;color:var(--ink-2);margin-top:2.1em;scroll-margin-top:calc(var(--header-h) + 20px);
}
.prose ul,.prose ol{margin:1.05em 0 0;padding-left:1.1em}
.prose li{margin-top:.4em;padding-left:.15em}
.prose li::marker{color:var(--ink-3);font-family:var(--font-mono);font-size:.82em}
.prose a{color:var(--blue-dk);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px;text-decoration-color:var(--blue-line)}
.prose a:hover{color:var(--blue);text-decoration-color:var(--blue)}
.prose strong{font-weight:600;color:var(--ink)}
.prose em{font-style:italic}
.prose code{
  font-family:var(--font-mono);font-size:.8em;color:var(--ink-code);background:var(--fill);
  padding:.1em .32em;border-radius:2px;
}
.prose pre code{background:none;padding:0;color:inherit;font-size:inherit}
.prose hr{border:0;height:1px;background:var(--line);margin:2.4em 0}

.code{margin:1.5em 0 0;border-radius:var(--r);overflow:hidden;background:var(--dark);border:1px solid var(--dark-line)}
.code figcaption{
  display:flex;justify-content:space-between;align-items:center;gap:12px;
  padding:8px 13px;background:var(--dark-2);border-bottom:1px solid var(--dark-line);
  font-family:var(--font-mono);font-size:.64rem;letter-spacing:.06em;color:var(--dark-ink-2);
}
.code pre{
  margin:0;padding:14px 15px;overflow-x:auto;
  font-family:var(--font-mono);font-size:.745rem;line-height:1.68;color:var(--dark-ink);tab-size:2;
}
.copy{
  font-family:var(--font-mono);font-size:.56rem;letter-spacing:.11em;text-transform:uppercase;
  background:transparent;border:1px solid var(--dark-line);color:var(--dark-ink-2);padding:3px 7px;
  border-radius:2px;cursor:pointer;flex:none;transition:color .16s,border-color .16s;
}
.copy:hover{color:var(--dark-ink);border-color:var(--dark-line-2)}
.copy:focus-visible{outline:2px solid #5f7ce0;outline-offset:2px}

.callout{
  margin:1.55em 0 0;padding:15px 18px;background:var(--subtle);
  border-left:2px solid var(--blue);border-radius:0 var(--r) var(--r) 0;
  font-size:1rem;line-height:1.6;
}
.callout__t{
  font-family:var(--font-mono);font-size:.58rem;letter-spacing:.13em;text-transform:uppercase;
  color:var(--blue-dk);margin:0 0 6px;font-weight:500;
}
.callout p{margin:0;color:var(--ink-2)}
.callout p + p{margin-top:.6em}
.callout--warn{border-left-color:var(--amber);background:var(--warn-bg)}
.callout--warn .callout__t{color:var(--warn-tx)}

.tbl{width:100%;border-collapse:collapse;margin:1.45em 0 0;font-size:.86rem;line-height:1.5}
.tbl caption{caption-side:bottom;text-align:left;font-family:var(--font-mono);font-size:.62rem;color:var(--ink-3);padding-top:10px;letter-spacing:.03em}
.tbl th{
  text-align:left;font-family:var(--font-mono);font-size:.58rem;letter-spacing:.11em;
  text-transform:uppercase;color:var(--ink-3);padding:0 12px 8px 0;
  border-bottom:1px solid var(--ink);font-weight:500;vertical-align:bottom;
}
.tbl td{padding:10px 12px 10px 0;border-bottom:1px solid var(--line);vertical-align:top;color:var(--ink-2)}
.tbl td:first-child{color:var(--ink);font-weight:500;white-space:nowrap}
.tbl code{white-space:normal}
.tbl--uid td{font-family:var(--font-mono);font-size:.78rem}

.post-end{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--ink);
  display:flex;justify-content:space-between;align-items:baseline;gap:24px;flex-wrap:wrap;
}
.post-end p{margin:0;font-family:var(--font-body);font-style:italic;font-size:.9rem;color:var(--ink-3);max-width:42ch}
.post-end a{
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.06em;text-transform:uppercase;
  color:var(--blue-dk);text-decoration:none;border-bottom:1px solid var(--blue-line);
  padding-bottom:3px;white-space:nowrap;
}
.post-end a:hover{color:var(--blue);border-bottom-color:var(--blue)}

/* ---------- responsive ---------- */
@media (max-width:1020px){
  .hero__grid{grid-template-columns:1fr;gap:36px}
  .band__grid{grid-template-columns:1fr;gap:34px}
  .post-layout{grid-template-columns:1fr;gap:26px}
  .post-rail{position:static;display:grid;grid-template-columns:1.6fr 1fr;gap:26px;padding-bottom:22px}
  .rail-block + .rail-block{margin-top:0;padding-top:0;border-top:0}
  .prose{max-width:none}
}
@media (max-width:820px){
  .foot__grid{grid-template-columns:1fr 1fr;gap:26px}
  .foot__grid > div:first-child{grid-column:1/-1}
}
@media (max-width:680px){
  .site-head__in{height:auto;flex-wrap:wrap;padding-top:11px;padding-bottom:0;gap:0}
  .site-nav{
    order:3;width:100%;margin:9px 0 0;overflow-x:auto;scrollbar-width:none;
    border-top:1px solid var(--line);padding:6px 0;
  }
  .site-nav::-webkit-scrollbar{display:none}
  .site-nav a{padding:6px 9px;font-size:.68rem}
  .head-git{display:none}
  .cards{grid-template-columns:1fr}
  .row{grid-template-columns:32px minmax(0,1fr);gap:8px 12px}
  .row__meta{grid-column:2;text-align:left;padding-top:0}
  .postcard{grid-template-columns:1fr;gap:14px}
  .postcard__date{flex-direction:row;align-items:baseline;gap:9px;padding-top:0}
  .postcard__date b{font-size:1.5rem}
  .postcard__date span{margin-top:0}
  .index-bar__note{margin-left:0}
  .post-rail{grid-template-columns:1fr}
  .prose{font-size:1.08rem}
  .prose .lede{font-size:1.16rem}
  .note-inline{grid-template-columns:1fr;gap:8px}
  .tbl{font-size:.8rem}
  .tbl td:first-child{white-space:normal}
  .post-end{flex-direction:column;gap:12px}
  .sec__head{flex-direction:column;align-items:flex-start;gap:14px}
}
@media print{
  .site-head,.site-foot,.post-rail,.filters,.panel,.note-inline{display:none!important}
  body{background:var(--raise)}
  .code{break-inside:avoid;background:#f4f4f4;border-color:#ccc}
  .code pre{color:#111}
  .code figcaption{background:#eaeaea;color:#333;border-color:#ccc}
  .prose{font-size:11pt}
  .prose h2{break-after:avoid}
}
.kv{border-collapse:collapse;width:100%;font-family:var(--font-mono);font-size:.68rem;line-height:1.45}
.kv td{padding:5px 0;border-bottom:1px solid var(--line-2);vertical-align:top;color:var(--ink-2)}
.kv td:first-child{color:var(--ink-3);text-transform:uppercase;letter-spacing:.08em;font-size:.6rem;width:42%;padding-right:8px;padding-top:7px}
.kv a{color:var(--blue-dk);text-decoration:none;word-break:break-all}
.kv a:hover{text-decoration:underline}
/* ---------- NEXT ---------- */


/* ---------- theme toggle ---------- */
.theme-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:32px;height:32px;margin-left:2px;padding:0;flex:none;
  background:transparent;border:1px solid transparent;border-radius:var(--r);
  color:var(--ink-2);cursor:pointer;
  transition:color .18s,background .18s,border-color .18s;
}
.theme-toggle:hover{background:var(--fill);color:var(--ink);border-color:var(--line)}
.theme-toggle:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
.theme-toggle svg{width:16px;height:16px;display:block;fill:none;stroke:currentColor;
  stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.theme-toggle .i-auto,.theme-toggle .i-light,.theme-toggle .i-dark{display:none}
:root:not([data-theme-mode]) .theme-toggle .i-auto,
:root[data-theme-mode="auto"] .theme-toggle .i-auto{display:block}
:root[data-theme-mode="light"] .theme-toggle .i-light{display:block}
:root[data-theme-mode="dark"] .theme-toggle .i-dark{display:block}

/* the diagram marker inherits the line colour */
.diagram marker path{fill:var(--dgm-blue)}

@media print{
  :root,:root[data-theme="dark"],:root[data-theme="light"]{
    --paper:#fff;--paper-2:#fff;--raise:#fff;
    --ink:#000;--ink-2:#333;--ink-3:#555;--ink-code:#111;
    --line:#ccc;--line-2:#ddd;--line-3:#ccc;--fill:#f4f4f4;--subtle:#f4f4f4;
    --bar-1:#eaeaea;--bar-2:#e4e4e4;
    --blue:#12308c;--blue-dk:#12308c;--amber:#8a4f12;--ok:#0a5a3f;
  }
  .theme-toggle{display:none!important}
}

/* ---------- project pages ---------- */
.pc-stack{display:flex;flex-wrap:wrap;gap:6px}
.pc-stack i + i{margin-left:0}
.pc-stack i{
  font-style:normal;font-family:var(--font-mono);font-size:.6rem;letter-spacing:.05em;
  color:var(--ink-2);border:1px solid var(--line-2);background:var(--fill);
  padding:2px 6px;border-radius:2px;margin:0 6px 0 0;
}
.prose pre{
  margin:1.4em 0 0;padding:14px 15px;overflow-x:auto;border-radius:var(--r);
  background:var(--dark-2);border:1px solid var(--dark-line);
  font-family:var(--font-mono);font-size:.745rem;line-height:1.68;color:var(--dark-ink);
}
.prose pre code{background:none;color:inherit;padding:0;font-size:inherit}

/* ---------- rail: stack chips + kv rows (last-position, cannot be overridden) ---------- */
.post-rail .card__stack{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}
.post-rail .card__stack span{
  display:inline-block;font-family:var(--font-mono);font-size:.6rem;line-height:1.5;
  letter-spacing:.05em;text-transform:none;color:var(--ink-2);
  border:1px solid var(--line-2);background:var(--fill);
  padding:2px 6px;border-radius:2px;white-space:nowrap;
}
.post-rail table.kv{width:100%;border-collapse:collapse;display:table}
.post-rail table.kv tr{display:table-row}
.post-rail table.kv td{
  display:table-cell;padding:6px 0;vertical-align:top;
  border-bottom:1px solid var(--line);
  font-size:.74rem;line-height:1.45;
}
.post-rail table.kv tr:last-child td{border-bottom:0}
.post-rail table.kv td:first-child{
  width:38%;padding-right:10px;color:var(--ink-3);
  font-family:var(--font-mono);font-size:.58rem;letter-spacing:.08em;text-transform:uppercase;
}
.post-rail table.kv td:last-child{color:var(--ink-2);word-break:break-word}