:root{color-scheme:dark;--ink:#ecf0e7;--paper:#101b17;--line:#34453b;--accent:#d6f393;--muted:#b4c3b8;--mono:ui-monospace,SFMono-Regular,Consolas,monospace}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:24px}
body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,Arial,sans-serif;font-size:16px;line-height:1.65;background-image:linear-gradient(90deg,transparent calc(100% - 1px),#a0ba9b08 1px);background-size:80px 100%}
a{color:inherit;text-underline-offset:5px}
button,a{touch-action:manipulation;-webkit-tap-highlight-color:#d6f39335}
button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:5px}
.skip{position:absolute;top:-100px;left:20px;padding:12px;background:var(--accent);color:var(--paper);z-index:10}.skip:focus{top:12px}
.bound-nav{max-width:1320px;margin:auto;padding:28px 40px;display:flex;justify-content:space-between;gap:24px;align-items:center;border-bottom:1px solid var(--line)}
.bound-nav nav{display:flex;gap:28px;font-size:13px}.bound-nav nav a{text-decoration:none;color:var(--muted)}.bound-nav nav a:hover{color:var(--accent)}
.brand img{display:block;width:165px;height:auto;filter:brightness(0) invert(1)}
main{max-width:1320px;margin:auto;padding:0 40px}
.hero{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(280px,.65fr);gap:70px;align-items:center;padding:88px 0 76px}
.eyebrow{font:600 11px/1.6 var(--mono);letter-spacing:.12em;text-transform:uppercase;margin:0 0 20px;color:var(--muted)}
.mode-tag{display:inline-block;border:1px solid var(--line);padding:5px 9px;margin-left:12px;font:500 10px/1.5 var(--mono);letter-spacing:.03em;color:var(--accent);vertical-align:middle}
h1{font-size:clamp(64px,8.2vw,108px);line-height:.99;letter-spacing:-.065em;font-weight:560;margin:0 0 30px;text-wrap:balance}
h1 em{font-style:normal;color:var(--accent)}
h2{font-size:clamp(29px,3.5vw,46px);line-height:1.12;letter-spacing:-.045em;margin:0 0 24px;font-weight:550;text-wrap:balance}
h3{font-size:17px;line-height:1.35;font-weight:600;margin:0 0 12px}
.hero-promise{font-size:21px;line-height:1.4;letter-spacing:-.025em;margin:0 0 18px}
.lede{font-size:16px;line-height:1.75;max-width:610px;color:var(--muted)}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:24px;margin:28px 0 20px}
.button,button{font:600 13px/1.5 Inter,Arial,sans-serif;padding:12px 17px;border:1px solid var(--line);border-radius:3px;background:var(--accent);color:var(--paper);text-decoration:none;display:inline-block;cursor:pointer;transition:background-color .15s,color .15s,border-color .15s}
button{background:transparent;color:var(--ink)}button:hover{background:#334a3c;border-color:#8aab8f}.button:hover{background:#e5ffb6}.button:focus-visible{outline-color:#f4fff0}
button:disabled{opacity:.42;cursor:not-allowed}.secondary{background:transparent;color:var(--ink)}
.boundary,.small{font-size:12px;line-height:1.7;color:var(--muted)}
.permit-schematic{background:#eceee2;color:#17251c;border:1px solid #d4d9c5;padding:28px;position:relative;transform:rotate(2deg);box-shadow:15px 18px 0 #07100b66}
.ticket-top{display:flex;justify-content:space-between;gap:16px;border-bottom:1px solid #adb7a5;padding-bottom:18px;font:600 9px/1.4 var(--mono);letter-spacing:.1em}
.ticket-title{font-size:36px;line-height:1.1;letter-spacing:-.05em;font-weight:550;margin:30px 0}
.permit-schematic dl{font:12px/1.6 var(--mono);margin:0;display:grid;grid-template-columns:90px minmax(0,1fr);gap:15px 10px}.permit-schematic dt{color:#596556}.permit-schematic dd{margin:0;overflow-wrap:anywhere}
.ticket-stamp{border-block:1px dashed #7b8d71;margin:28px 0 16px;padding:15px 0;font:600 9px/1.6 var(--mono);letter-spacing:.05em}
.ticket-note{font-size:11px;line-height:1.6;color:#51604a;margin-bottom:0}
.system-panel{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:54px;background:#e8eddf;color:#19251c;padding:48px;margin:0 0 44px;border-top:4px solid var(--accent);color-scheme:light}
.system-panel .eyebrow{color:#52644b}.system-heading>p:not(.eyebrow){font-size:15px;color:#53624d}.system-heading em{font-style:normal;color:#172d1b;font-weight:600}
.system-rail{list-style:none;margin:0;padding:0}.system-rail li{display:grid;grid-template-columns:36px minmax(0,1fr);gap:18px;padding:0 0 23px;position:relative}
.system-rail li:not(:last-child):before{content:'';position:absolute;left:17px;top:34px;bottom:0;width:1px;background:#a8b69e}.rail-number{height:34px;width:34px;border:1px solid #79906b;display:grid;place-items:center;font:11px var(--mono)}
.rail-owner{font:600 9px var(--mono);letter-spacing:.09em;color:#5d7353}.system-rail h3{margin:6px 0;font-size:17px}.system-rail p{margin:0;color:#52644b;font-size:13px;line-height:1.7}
.system-footnote{grid-column:1/-1;font-size:11px;margin:0;padding-top:20px;border-top:1px solid #b9c5af;color:#53624d}
.panel{border:1px solid var(--line);background:#17251e;padding:36px;margin:32px 0;min-width:0}
.section-heading{display:flex;justify-content:space-between;align-items:start;gap:20px}.section-heading .mode-tag{margin:0 0 20px}
.transaction-lab{color-scheme:dark}.transaction-lab>p{max-width:820px}.transaction-lab .eyebrow{color:var(--accent)}
.permit-readout{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);border-block:1px solid var(--line);margin:28px 0 24px;padding:20px 0;gap:24px}
.readout-label{display:block;font:10px/1.5 var(--mono);color:#8da590;letter-spacing:.1em;margin-bottom:7px}.permit-readout output,.permit-readout #permit-outcome{font:500 13px/1.6 var(--mono);display:block;overflow-wrap:anywhere}
#permit-state[data-state=APPROVE]{color:var(--accent)}#permit-state[data-state=BLOCK]{color:#ffb8a8}#permit-state[data-state=DEFER]{color:#ffd89c}
.contractor-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border:1px solid var(--line)}
.approved-transfer,#edit-transfer{min-width:0;padding:25px;background:#102018;border:1px solid var(--line)}
.contractor-lab .approved-transfer{border:0;background:transparent;padding:24px}.contractor-lab .approved-transfer:not(:last-child){border-right:1px solid var(--line)}
.approved-transfer dl{margin:0}.approved-transfer dt{font:10px/1.6 var(--mono);color:#8da590;margin-top:15px}.approved-transfer dd{margin:5px 0 0;overflow-wrap:anywhere;font-size:13px}.approved-transfer code{font:11px/1.65 var(--mono);overflow-wrap:anywhere}
.contractor-lab code{display:block;font:10px/1.7 var(--mono);overflow-wrap:anywhere}.contractor-lab a{color:var(--accent);font-size:12px}
.edit-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}.contractor-lab .edit-actions{display:grid;grid-template-columns:1fr;gap:8px}.contractor-lab .edit-actions button{width:100%;font-size:12px;padding:10px}
.contractor-lab #contractor-check{width:100%;background:var(--accent);color:var(--paper);border-color:var(--accent)}
.check-result{padding:22px;background:#223329;border-left:3px solid #94b370;margin-top:20px;min-height:140px}.contractor-lab .check-result{padding:18px;min-height:0}
.check-result h3{font:600 14px/1.6 var(--mono);letter-spacing:.03em}.check-result p{font-size:12px;line-height:1.75;margin:10px 0 0}.check-result code{display:block;font-size:11px;overflow-wrap:anywhere}
.check-result[data-state=DEFER]{background:#332e20;border-color:#ffd89c}.check-result[data-state=BLOCK],.check-result[data-state=TRANSACTION_CHANGED],.check-result[data-state=APPROVAL_EXPIRED]{background:#36271f;border-color:#ffb8a8}
.contractor-lab #contractor-count{font:500 25px/1.5 var(--mono);color:var(--accent)}.contractor-lab #contractor-owner-status{font-size:12px;min-height:44px}.contractor-lab .small{font-size:11px}.contractor-lab details{margin-top:20px}.contractor-lab summary{font-size:11px;cursor:pointer;line-height:1.6}
.contractor-lab pre{white-space:pre-wrap;overflow-wrap:anywhere;padding:14px;font-size:10px;max-height:300px}
.proof{background:#203025}.proof .section-heading{display:block}#proof-status{font:12px/1.7 var(--mono);color:var(--accent)}
.receipt-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin:28px 0;border-block:1px solid var(--line);padding:22px 0;font-variant-numeric:tabular-nums}.receipt-stats strong{display:block;font-size:clamp(24px,3vw,37px);line-height:1.3;font-weight:550;letter-spacing:-.04em}.receipt-stats span{font:10px/1.7 var(--mono);color:var(--muted)}
.receipt{display:grid;grid-template-columns:190px minmax(0,1fr);gap:12px 20px;font-size:12px}.receipt dt{color:var(--muted)}.receipt dd{margin:0;overflow-wrap:anywhere;font:11px/1.7 var(--mono)}
.text-link{display:inline-block;font-size:13px;font-weight:550}.lab-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:24px}
.transaction-lab label{display:block;font-size:12px;font-weight:600;margin:16px 0 8px}.transaction-lab input{width:100%;min-width:0;border:1px solid #79977b;border-radius:3px;padding:12px;background:#101b17;color:var(--ink);font:16px/1.5 var(--mono)}.transaction-lab input:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
.transaction-lab #check-edited{background:var(--accent);color:var(--paper)}.checks{display:flex;flex-wrap:wrap;gap:10px;margin:25px 0}.transaction-lab #result-hash:not(:empty):before{content:'Proposed message SHA-256: ';display:block;color:var(--muted);margin:8px 0}
.two-column{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:24px}.two-column .panel{margin:0}.two-column p,.two-column li{font-size:14px}.two-column ul{padding-left:20px}.two-column li{margin-bottom:12px}
.business-panel{border-top:3px solid var(--accent)}.business-panel .eyebrow{color:var(--accent)}.offer-steps{list-style:none;padding:0;margin:28px 0;counter-reset:offer}.offer-steps li{padding:16px 0 16px 40px;border-top:1px solid var(--line);position:relative;color:var(--muted)}.offer-steps li:before{counter-increment:offer;content:'0' counter(offer);position:absolute;left:0;top:18px;font:11px var(--mono);color:var(--accent)}.offer-steps strong{display:block;color:var(--ink);margin-bottom:5px}
pre{font:12px/1.8 var(--mono);background:#0c1711;color:#e2eed7;padding:24px;overflow:auto;border:1px solid var(--line)}
footer{display:flex;flex-wrap:wrap;gap:20px;padding:30px 0 50px;font-size:11px;color:var(--muted)}footer p{flex-basis:100%;margin:0}
@media(max-width:1050px){.hero{gap:40px;grid-template-columns:minmax(0,1.2fr) minmax(260px,.8fr)}h1{font-size:75px}.system-panel{padding:32px;gap:32px}.contractor-grid{grid-template-columns:1fr}.contractor-lab .approved-transfer:not(:last-child){border-right:0;border-bottom:1px solid var(--line)}.contractor-lab .edit-actions{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:750px){.hero{grid-template-columns:1fr;padding:50px 0 45px;gap:30px}.hero-copy{max-width:620px}.permit-schematic{max-width:460px;transform:none;box-shadow:8px 8px 0 #07100b66}.system-panel{grid-template-columns:1fr;gap:28px}.system-heading h2{font-size:39px}.system-footnote{grid-column:auto}.two-column{grid-template-columns:1fr}.lab-grid{grid-template-columns:1fr}.bound-nav nav{gap:15px;font-size:11px}}
@media(max-width:500px){main{padding:0 20px}.bound-nav{padding:22px 20px;gap:14px}.brand img{width:120px}.bound-nav nav{gap:12px}.bound-nav nav a:last-child{display:none}.hero{padding-top:40px}h1{font-size:clamp(50px,14vw,68px)}.hero .eyebrow{font-size:10px;letter-spacing:.07em}.mode-tag{font-size:9px;margin-left:6px;padding:4px 6px}.hero-promise{font-size:19px}.lede{font-size:14px}.hero-actions{gap:16px}.hero-actions .button{padding:12px 15px}.permit-schematic{padding:23px}.ticket-title{font-size:31px}.system-panel{padding:26px 22px}.system-heading h2{font-size:35px}.system-rail li{gap:13px}.system-rail h3{font-size:16px}.panel{padding:27px 20px}.section-heading{display:block}.section-heading .mode-tag{margin-bottom:16px}.contractor-lab .approved-transfer{padding:20px 17px}.contractor-lab .edit-actions{grid-template-columns:1fr}.permit-readout{grid-template-columns:1fr;gap:16px}.permit-readout output{font-size:11px}.receipt{grid-template-columns:1fr;gap:5px}.receipt dd{margin-bottom:12px}.receipt-stats{grid-template-columns:1fr;gap:15px}.receipt-stats div{display:flex;gap:16px;align-items:baseline}.receipt-stats strong{min-width:145px;font-size:27px}.checks button{flex:1 1 125px}.two-column .panel{margin:0}.boundary{font-size:10px}pre{padding:18px;font-size:11px}.small{font-size:11px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}button,.button{transition:none}}