@font-face{font-family:"Bricolage Grotesque";font-weight:600;font-display:swap;src:url(/fonts/bricolage-grotesque-latin-600-normal.woff2) format("woff2")}
@font-face{font-family:"Bricolage Grotesque";font-weight:800;font-display:swap;src:url(/fonts/bricolage-grotesque-latin-800-normal.woff2) format("woff2")}
@font-face{font-family:"Literata";font-weight:400;font-display:swap;src:url(/fonts/literata-latin-400-normal.woff2) format("woff2")}
@font-face{font-family:"Literata";font-weight:600;font-display:swap;src:url(/fonts/literata-latin-600-normal.woff2) format("woff2")}
@font-face{font-family:"Martian Mono";font-weight:400;font-display:swap;src:url(/fonts/martian-mono-latin-400-normal.woff2) format("woff2")}
@font-face{font-family:"Martian Mono";font-weight:600;font-display:swap;src:url(/fonts/martian-mono-latin-600-normal.woff2) format("woff2")}
/* Layout: one logbook column; entries keyed by mono IDs in a left gutter, like a radio operator's log. */
:root{
  --paper:#F4F7F8; --ink:#13202B; --muted:#56656F; --rule:#D3DCE1; --card:#FFFFFF;
  --signal:#B86E00; --signal-ink:#FFFFFF; --ok:#1F7A4D; --bad:#B3261E;
  --display:"Bricolage Grotesque", "Segoe UI", system-ui, sans-serif;
  --body:"Literata", Georgia, "Times New Roman", serif;
  --mono:"Martian Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --paper:#0E151B; --ink:#E4EBEE; --muted:#9AA9B2; --rule:#26343D; --card:#141E26;
  --signal:#F0A43A; --signal-ink:#1A1206; --ok:#5CC48E; --bad:#F08A80; color-scheme:dark}}
:root[data-theme="dark"]{
  --paper:#0E151B; --ink:#E4EBEE; --muted:#9AA9B2; --rule:#26343D; --card:#141E26;
  --signal:#F0A43A; --signal-ink:#1A1206; --ok:#5CC48E; --bad:#F08A80; color-scheme:dark}

body{background:var(--paper);color:var(--ink);font:400 17px/1.65 var(--body);
  padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.wrap{max-width:760px;margin:0 auto;padding-block:48px 64px;display:flex;flex-direction:column;gap:56px}
h1,h2,h3{font-family:var(--display);text-wrap:balance;margin:0;line-height:1.15}
h2{font-size:1.55rem;font-weight:800}
h3{font-size:1.05rem;font-weight:600}
p{margin:0;max-width:65ch}
a{color:var(--signal)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid var(--signal);outline-offset:2px}
.label{font:600 .7rem/1.4 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
section{display:flex;flex-direction:column;gap:16px}

/* Hero */
header{display:flex;flex-direction:column;gap:20px;border-bottom:1px solid var(--rule);padding-bottom:40px}
.mark{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap}
h1{font-size:clamp(2.6rem,9vw,4.4rem);font-weight:800;letter-spacing:-.02em}
.morse{font:600 1.4rem/1 var(--mono);color:var(--signal);letter-spacing:.15em}
.lede{font-size:1.2rem;line-height:1.55}
.by{font:400 .78rem/1.5 var(--mono);color:var(--muted)}
.draft{align-self:flex-start;font:600 .7rem/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;
  background:var(--signal);color:var(--signal-ink);padding:6px 10px;border-radius:3px}

/* Standards strip */
.std{display:flex;flex-wrap:wrap;gap:8px;list-style:none;margin:0;padding:0}
.std li{font:400 .74rem/1.4 var(--mono);border:1px solid var(--rule);border-radius:3px;padding:6px 9px}
.std b{font-weight:600}

/* Layers */
.layers{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:var(--rule);border:1px solid var(--rule)}
.layer{background:var(--paper);padding:18px;display:flex;flex-direction:column;gap:8px;min-width:0}
.layer p{font-size:.95rem}
@media (max-width:640px){.layers{grid-template-columns:1fr}}

/* Measures */
.measures{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 28px;margin:0;padding:0;list-style:none}
.measures li{border-top:1px solid var(--rule);padding-top:10px;font-size:.95rem;min-width:0}
.measures b{display:block;font:600 .78rem/1.4 var(--mono);margin-bottom:2px}
@media (max-width:560px){.measures{grid-template-columns:1fr}}

/* Rules */
.rules{display:flex;flex-direction:column;gap:28px}
.rgroup{display:flex;flex-direction:column;gap:0}
.rgroup h3{padding-bottom:8px;border-bottom:1px solid var(--ink)}
.rlist{list-style:none;margin:0;padding:0}
.rlist li{display:grid;grid-template-columns:56px minmax(0,1fr);gap:14px;padding:12px 0;border-bottom:1px solid var(--rule)}
.rlist .rid{font:600 .78rem/1.7 var(--mono);color:var(--signal);font-variant-numeric:tabular-nums}
.rlist p{font-size:.96rem}
.rlist b{font-family:var(--display);font-weight:600}

/* Pulse */
.pulse-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;background:var(--rule);border:1px solid var(--rule)}
.stat{background:var(--paper);padding:14px 16px;display:flex;flex-direction:column;gap:4px;min-width:0}
.stat .v{font:600 1.5rem/1.1 var(--mono);font-variant-numeric:tabular-nums}
.stat .k{font:400 .7rem/1.4 var(--mono);color:var(--muted)}
@media (max-width:640px){.pulse-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
.spark{display:flex;flex-direction:column;gap:6px}
.spark svg{width:100%;height:auto;max-width:100%;overflow:visible}
.spark .bar{fill:var(--signal)}
.spark .base{stroke:var(--rule);stroke-width:1}
.spark text{fill:var(--muted);font:400 9px var(--mono)}
.head{font:400 .74rem/1.6 var(--mono);background:var(--card);border:1px solid var(--rule);border-radius:4px;padding:12px 14px;overflow-x:auto;white-space:nowrap}
.head b{font-weight:600;color:var(--signal)}
.proofs{list-style:none;margin:0;padding:0;font:400 .74rem/1.7 var(--mono)}
.proofs a{color:var(--signal)}
.reqtext{white-space:pre-wrap;font-size:.8rem}

/* Log */
.log{list-style:none;margin:0;padding:0;border-top:1px solid var(--rule)}
.log li{display:grid;grid-template-columns:170px minmax(0,1fr);gap:18px;padding:16px 0;border-bottom:1px solid var(--rule)}
.log time{font:400 .78rem/1.6 var(--mono);color:var(--muted);font-variant-numeric:tabular-nums}
.log .id{display:block;color:var(--signal);font-weight:600}
.log p{font-size:.98rem}
@media (max-width:560px){.log li{grid-template-columns:1fr;gap:4px}}

/* Form */
form{background:var(--card);border:1px solid var(--rule);border-radius:6px;padding:24px;display:flex;flex-direction:column;gap:18px}
.row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
@media (max-width:560px){.row{grid-template-columns:1fr}}
.field{display:flex;flex-direction:column;gap:6px;min-width:0}
label,legend{font:600 .76rem/1.4 var(--mono);color:var(--ink)}
.hint{font:400 .72rem/1.5 var(--mono);color:var(--muted)}
input,select,textarea{font:400 1rem/1.4 var(--body);color:var(--ink);background:var(--paper);
  border:1px solid var(--rule);border-radius:4px;padding:10px 12px;width:100%;box-sizing:border-box}
textarea{min-height:110px;resize:vertical}
fieldset{border:0;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.check{display:flex;gap:10px;align-items:flex-start;font:400 .95rem/1.5 var(--body)}
.check input{width:auto;margin-top:5px;accent-color:var(--signal)}
.err{font:400 .76rem/1.4 var(--mono);color:var(--bad)}
button{align-self:flex-start;font:600 .85rem/1 var(--mono);letter-spacing:.04em;background:var(--signal);color:var(--signal-ink);
  border:0;border-radius:4px;padding:14px 20px;cursor:pointer}
button:hover{filter:brightness(1.08)}
.done{border:1px solid var(--ok);border-radius:6px;padding:18px;display:flex;flex-direction:column;gap:8px}
.done h3{color:var(--ok)}

footer{border-top:1px solid var(--rule);padding-top:24px;display:flex;flex-direction:column;gap:12px;font-size:.88rem;color:var(--muted)}
footer p{max-width:none}
@media (prefers-reduced-motion:no-preference){.morse{animation:blink 2.4s steps(1) 1}}
@keyframes blink{0%{opacity:1}10%{opacity:.35}20%{opacity:1}}