:root{--doc-wide:1180px;--doc-copy:760px;--ok:#3f7251;--ok-soft:#e8f1e8;--warn:#9a5b32;--warn-soft:#f8eee3;--info:#486779;--info-soft:#e8eff2}
html{scroll-behavior:smooth;scroll-padding-top:92px}
body{background:#f7f6f2}
.skip-link{position:fixed;left:16px;top:-60px;z-index:100;background:var(--ink);color:#fff;padding:10px 14px;border-radius:5px}
.skip-link:focus{top:12px}
.docs-shell{display:grid;grid-template-columns:218px minmax(0,1fr) 190px;gap:42px;max-width:var(--doc-wide);margin:0 auto;padding:40px 28px 90px}
.docs-nav{position:sticky;top:96px;align-self:start;max-height:calc(100vh - 116px);overflow:auto;padding-right:12px}
.docs-nav .eyebrow{display:block;margin-bottom:14px}
.docs-nav a{display:block;text-decoration:none;color:var(--muted);font-size:12px;padding:7px 10px;border-left:1px solid var(--line);transition:color .15s,border .15s,background .15s}
.docs-nav a:hover{color:var(--ink);background:#efefe9}
.docs-nav a.current{color:var(--ink);border-left:2px solid var(--accent);background:#fff}
.docs-nav .nav-group{font:9px/1.4 var(--mono);text-transform:uppercase;letter-spacing:.12em;color:#8a918b;margin:25px 0 8px;padding-left:10px}
.docs-nav .nav-group:first-of-type{margin-top:0}
.docs-nav .repo-link{margin-top:22px;border:1px solid var(--line);border-radius:5px;padding:10px}
.docs-main{min-width:0}
.docs-hero{padding:5px 0 36px;border-bottom:1px solid var(--line)}
.docs-hero h1{font-size:clamp(40px,5.5vw,66px);line-height:1;max-width:720px;font-weight:500;margin:16px 0 22px}
.docs-hero .lead{font-size:16px;line-height:1.75;max-width:680px;color:#53605b}
.hero-actions{display:flex;gap:9px;flex-wrap:wrap;margin-top:24px}
.doc-status{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:28px 0 0}
.status-card{border:1px solid var(--line);border-radius:7px;padding:14px 16px;background:#fff}
.status-card strong{display:block;font-size:13px;margin-bottom:4px}
.status-card span{font-size:11px;color:var(--muted)}
.status-card.ok{border-left:3px solid var(--ok)}
.status-card.pending{border-left:3px solid var(--warn)}
.docs-main section{padding:43px 0;border-bottom:1px solid var(--line)}
.docs-main section:last-child{border-bottom:0}
.section-label{font:10px/1.5 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin-bottom:9px}
.docs-main h2{font-size:30px;font-weight:520;margin-bottom:16px}
.docs-main h3{font-size:17px;margin:28px 0 10px}
.docs-main h4{font-size:13px;margin:20px 0 8px}
.docs-main p,.docs-main li{color:#4d5854;line-height:1.75}
.docs-main p{max-width:var(--doc-copy)}
.docs-main ul,.docs-main ol{padding-left:20px;max-width:var(--doc-copy)}
.docs-main li{margin:7px 0}
.callout{padding:16px 18px;border-radius:6px;margin:20px 0;max-width:var(--doc-copy);font-size:13px;line-height:1.65}
.callout strong{color:var(--ink)}
.callout.warning{background:var(--warn-soft);border:1px solid #dec7ae;color:#775632}
.callout.info{background:var(--info-soft);border:1px solid #c8d8df;color:#415e6c}
.callout.ok{background:var(--ok-soft);border:1px solid #c8d9ca;color:#3f624a}
.config-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:22px}
.config-card{background:#fff;border:1px solid var(--line);border-radius:8px;padding:18px;position:relative}
.config-card h3{font-size:15px;margin:0 0 5px}
.config-card p{font-size:12px;line-height:1.6;margin-bottom:14px}
.config-card .tags{display:flex;gap:6px;flex-wrap:wrap}
.tag{font:9px var(--mono);padding:5px 7px;background:#eeefe9;border-radius:4px;color:#53605b}
.config-card .card-links{display:flex;gap:12px;margin-top:15px;font-size:11px}
.config-card.recommended{border-color:#c78062;box-shadow:0 0 0 1px #c7806230}
.config-card.recommended:before{content:'DIRECT MATCH FOR CURRENT PARTS';position:absolute;right:12px;top:12px;font:8px var(--mono);letter-spacing:.08em;color:var(--accent)}
.decision{overflow:auto;margin:22px 0}
.decision table{min-width:650px;font-size:12px}
.decision th{background:#e7e9e2}
.decision td{background:#fff;line-height:1.55}
.flow{display:grid;grid-template-columns:1fr 32px 1fr 32px 1.1fr 32px 1fr;align-items:center;gap:6px;margin:28px 0}
.flow-node{background:#fff;border:1px solid #aeb8ae;border-radius:7px;padding:16px;text-align:center;min-height:82px;display:grid;place-content:center}
.flow-node strong{font-size:12px}.flow-node span{font:9px/1.5 var(--mono);color:var(--muted);margin-top:5px}
.flow-arrow{text-align:center;color:var(--accent);font-size:20px}
.architecture-branches{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:12px}
.mini-panel{background:#eeefe9;border-radius:7px;padding:17px}
.mini-panel h3{margin:0 0 8px;font-size:14px}.mini-panel p{font-size:12px;margin:0}
.stage-list{counter-reset:stage;display:grid;gap:0;margin-top:25px}
.stage-row{counter-increment:stage;display:grid;grid-template-columns:54px 160px 1fr;gap:16px;border-top:1px solid var(--line);padding:18px 0;align-items:start}
.stage-row:before{content:counter(stage,decimal-leading-zero);font:11px var(--mono);color:var(--accent)}
.stage-row strong{font-size:13px}.stage-row p{font-size:12px;margin:0;line-height:1.6}
.evidence-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:9px;margin:22px 0}
.evidence{background:#fff;border:1px solid var(--line);padding:17px;border-radius:7px}
.evidence b{display:block;font:24px var(--mono);letter-spacing:-.05em;margin-bottom:4px}
.evidence span{font-size:10px;color:var(--muted)}
.legend-list{display:grid;grid-template-columns:repeat(2,1fr);gap:9px;margin:22px 0}
.legend-item{padding:14px;border-radius:6px;font-size:12px;line-height:1.55}
.legend-item strong{display:block;color:var(--ink);margin-bottom:4px}
.legend-item.verified{background:var(--ok-soft)}.legend-item.simulated{background:var(--info-soft)}.legend-item.pending{background:var(--warn-soft)}.legend-item.measured{background:#ece9f3}
pre.code{background:var(--dark);color:#e9ece7;border-radius:7px;padding:18px;overflow:auto;font:11px/1.7 var(--mono);position:relative;margin:16px 0 22px}
.copy-code{position:absolute;right:8px;top:8px;border-color:#465052;background:#2b3335;color:#dfe3dd;font-size:10px;padding:5px 8px}
.file-tree{background:#eeefe9;border-radius:7px;padding:20px;white-space:pre;overflow:auto;font:11px/1.8 var(--mono);color:#47534e}
.docs-outline{position:sticky;top:96px;align-self:start;font-size:10px;color:var(--muted)}
.docs-outline b{display:block;color:var(--ink);font:10px var(--mono);letter-spacing:.1em;text-transform:uppercase;margin-bottom:12px}
.docs-outline a{display:block;color:var(--muted);text-decoration:none;margin:9px 0}.docs-outline a:hover{color:var(--ink)}
.doc-updated{margin-top:28px;padding-top:16px;border-top:1px solid var(--line);font:9px/1.6 var(--mono)}
.docs-footer{max-width:var(--doc-wide);margin:auto;padding:20px 28px 32px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:20px;color:var(--muted);font-size:10px}
.docs-menu{display:none}
@media(max-width:1100px){.docs-shell{grid-template-columns:190px minmax(0,1fr);gap:28px}.docs-outline{display:none}.evidence-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:760px){html{scroll-padding-top:125px}.docs-shell{display:block;padding:24px 18px 65px}.docs-menu{display:inline-flex}.docs-nav{display:none;position:fixed;inset:106px 14px auto 14px;z-index:30;max-height:calc(100vh - 130px);background:#fff;border:1px solid var(--line);border-radius:8px;padding:18px;box-shadow:0 15px 45px #30362e2a}.docs-nav.open{display:block}.docs-hero h1{font-size:43px}.doc-status,.config-grid,.architecture-branches,.legend-list{grid-template-columns:1fr}.flow{grid-template-columns:1fr}.flow-arrow{transform:rotate(90deg)}.stage-row{grid-template-columns:34px 1fr}.stage-row p{grid-column:2}.evidence-grid{grid-template-columns:1fr 1fr}.docs-footer{flex-direction:column;padding:18px}.config-card.recommended:before{position:static;display:block;margin-bottom:10px}.topbar .topnav a:nth-child(2){display:none}}
@media print{.docs-nav,.docs-outline,.docs-menu,.topbar,.docs-footer,.hero-actions,.copy-code{display:none!important}.docs-shell{display:block;max-width:none;padding:0}.docs-main section{break-inside:auto}.config-card,.stage-row,.callout{break-inside:avoid}.docs-hero h1{font-size:36px}}