:root{color-scheme:dark;--bg:#081522;--panel:#102434;--line:#294253;--text:#edf5fa;--muted:#a9bdce;--cyan:#66d9ec;--amber:#ffc078}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.5 system-ui,sans-serif}a{color:var(--cyan);text-decoration:none}a:hover{text-decoration:underline}nav{display:flex;gap:24px;align-items:center;flex-wrap:wrap;padding:22px 5vw;border-bottom:1px solid var(--line)}nav a:first-child{font-weight:750;margin-right:auto;color:var(--text)}main{max-width:1200px;margin:0 auto;padding:45px 24px 70px}h1{font-size:clamp(36px,5vw,60px);line-height:1.08;letter-spacing:-.04em;margin:0 0 18px}h2{font-size:28px;line-height:1.2}p{max-width:850px}.muted,small{color:var(--muted)}.eyebrow{color:var(--cyan);text-transform:uppercase;letter-spacing:.15em;font-size:12px;font-weight:750}.intro{font-size:19px;color:var(--muted);margin-bottom:32px}form{background:var(--panel);padding:26px;border:1px solid var(--line);border-radius:12px}.target{display:grid;grid-template-columns:1fr auto;gap:15px;align-items:end}.fields{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;margin:24px 0}label{display:block;font-size:14px;font-weight:650}input,select,button{font:inherit}input:not([type=checkbox]){display:block;width:100%;margin-top:7px;padding:12px 14px;background:var(--bg);border:1px solid #486171;border-radius:6px;color:var(--text)}button,.button{padding:12px 20px;border:1px solid var(--cyan);border-radius:6px;background:var(--cyan);color:#07151e;font-weight:750;cursor:pointer}button.secondary{background:transparent;color:var(--text);border-color:#486171}button:disabled{opacity:.5;cursor:wait}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--amber);outline-offset:4px}.checks{display:flex;gap:24px;flex-wrap:wrap;align-items:center;margin:14px 0}.checks label{display:flex;gap:9px;align-items:center}.checks input{accent-color:var(--cyan);width:18px;height:18px}fieldset{border:0;padding:0;margin:22px 0}legend{font-weight:650}details{margin-top:20px}summary{cursor:pointer;color:var(--cyan)}#status{min-height:28px;margin:24px 0;color:var(--muted)}#status.error{color:var(--amber)}.result-head{display:flex;gap:20px;justify-content:space-between;align-items:center;margin:30px 0 20px}.scroll{overflow-x:auto}table{width:100%;border-collapse:collapse;text-align:left}th{color:var(--cyan);font-size:14px}td,th{padding:16px;border-bottom:1px solid var(--line);vertical-align:top}td small{display:block}.reply{margin-bottom:8px}.yes{color:var(--cyan)}code,pre{font-family:ui-monospace,monospace}pre{white-space:pre-wrap;overflow-wrap:anywhere;font-size:14px;background:#06111b;padding:22px;border:1px solid var(--line);border-radius:8px}footer{color:var(--muted);font-size:14px;margin-top:40px} [hidden]{display:none!important}.deck main{max-width:none;padding:0}.slide{min-height:calc(100vh - 80px);padding:7vh 7vw 130px;display:flex;flex-direction:column;justify-content:center;position:relative}.slide h1{font-size:clamp(50px,7vw,94px)}.slide h2{font-size:clamp(32px,4vw,58px);letter-spacing:-.025em;margin:0 0 32px}.slide p,.slide li{font-size:clamp(20px,2.3vw,32px)}.slide table{font-size:clamp(16px,2vw,28px);max-width:1200px}.slide th{font-size:inherit}.slide .accent{color:var(--cyan)}.slide .caution{color:var(--amber);font-size:clamp(16px,1.7vw,23px)}.cover{background:linear-gradient(90deg,rgba(8,21,34,.3),transparent),url('/static/shotgun-cover.png') center/cover}.cover h1,.cover p{max-width:900px}.cover .byline{font-size:23px;margin-top:50px}.deckbar{position:fixed;bottom:0;left:0;right:0;background:#081522f5;border-top:1px solid var(--line);display:flex;gap:14px;align-items:center;padding:14px 5vw;z-index:3}.deckbar span{margin-right:auto}.notes{position:fixed;right:2vw;bottom:85px;width:min(650px,94vw);max-height:55vh;overflow:auto;background:#142b3b;padding:25px;border:1px solid var(--line);box-shadow:0 20px 60px #0008;z-index:4}.notes p{font-size:17px}.notes h3{margin:0 0 14px}.slide .mechanism{font-size:clamp(22px,2.8vw,38px);margin:20px 0}.hint{font-size:14px!important;color:var(--muted)}@media(max-width:700px){.fields{grid-template-columns:1fr 1fr}.target{grid-template-columns:1fr}.slide{padding:40px 22px 130px;min-height:calc(100svh - 80px)}.slide td,.slide th{padding:10px 7px}.deckbar{gap:8px;padding:12px}.deckbar button{padding:10px;font-size:13px}.result-head{align-items:start;flex-direction:column}}@media print{nav,.deckbar,.notes{display:none!important}.slide[hidden]{display:flex!important}.slide{min-height:100vh;break-after:page;padding:40px}.cover{print-color-adjust:exact}body{print-color-adjust:exact}}

@media screen and (min-width:701px) and (max-height:850px){.slide{min-height:100vh;padding:4vh 7vw 100px}.slide h2{font-size:clamp(30px,3.5vw,48px);margin-bottom:18px}.slide p{font-size:clamp(20px,2vw,28px);margin:12px 0}.slide td,.slide th{padding:10px 14px}.slide table{font-size:clamp(16px,1.8vw,25px)}}

/* Technical packet diagrams retain editable text and proportional bit widths. */
.ip-header{max-width:1050px;font-size:clamp(14px,1.5vw,22px)}.bit-scale{display:flex;justify-content:space-between;color:var(--muted);font:14px ui-monospace,monospace;margin-bottom:5px}.ip-row{display:flex;border-top:1px solid #597587;border-left:1px solid #597587}.ip-row:last-child{border-bottom:1px solid #597587}.ip-row span{flex:1;min-width:0;text-align:center;border-right:1px solid #597587;padding:9px 3px}.ip-row .hot{background:#164658;color:#99edff;font-weight:750}.slide .packet-caption{font-size:clamp(15px,1.45vw,21px);color:var(--muted);margin:14px 0}.quote-packet{display:grid;grid-template-columns:1fr 1fr;gap:0;font-size:clamp(17px,1.8vw,25px);border:1px solid #597587;margin:8px 0 14px}.quote-packet>div{padding:10px 16px;border:1px solid #294253}.quote-packet small{display:block;font-size:clamp(13px,1.2vw,18px)}.quote-packet .quoted{background:#123343;color:var(--cyan)}.slide .match-fields,.slide .flow-fields{font-size:clamp(16px,1.65vw,23px)}.technical .match-fields td,.technical .match-fields th{padding:9px 12px}@media(max-width:700px){.ip-row span{font-size:11px;padding:10px 1px}.quote-packet{grid-template-columns:1fr}.technical .match-fields td,.technical .match-fields th{padding:8px 5px}}