/* Small Engine Manual: shop-manual / parts-catalog system */
:root{
  --paper:#f1f2ed;
  --paper-2:#e6e8e1;
  --paper-3:#dadcd4;
  --ink:#1e2225;
  --ink-2:#4a5156;
  --rule:#c2c6bd;
  --rule-strong:#1e2225;
  --signal:#0d6b3f;
  --signal-ink:#ffffff;
  --signal-tint:#d9e9dd;
  --bar:#1e2225;
  --bar-ink:#f1f2ed;
  --bar-2:#2c3236;
  --bar-rule:#454c51;
  --mark-fill:#0d6b3f;
  --wrap:1180px;
  --gutter:24px;
  --f-head:"Barlow Condensed","Arial Narrow",sans-serif;
  --f-body:"Barlow",system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-mono:"IBM Plex Mono",ui-monospace,"SFMono-Regular",Menlo,monospace;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --paper:#16191b;--paper-2:#1f2326;--paper-3:#2a2f32;
    --ink:#e7e8e3;--ink-2:#a8aeb1;--rule:#3a4044;--rule-strong:#e7e8e3;
    --signal:#56c48d;--signal-ink:#0c1a12;--signal-tint:#1c3227;
    --bar:#0e1011;--bar-ink:#e7e8e3;--bar-2:#1b1f21;--bar-rule:#353b3f;--mark-fill:#1f8a54;
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --paper:#16191b;--paper-2:#1f2326;--paper-3:#2a2f32;
  --ink:#e7e8e3;--ink-2:#a8aeb1;--rule:#3a4044;--rule-strong:#e7e8e3;
  --signal:#56c48d;--signal-ink:#0c1a12;--signal-tint:#1c3227;
  --bar:#0e1011;--bar-ink:#e7e8e3;--bar-2:#1b1f21;--bar-rule:#353b3f;--mark-fill:#1f8a54;
  color-scheme:dark;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:84px}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--f-body);font-size:17px;line-height:1.55;overflow-x:hidden}
img,svg{max-width:100%;height:auto}
a{color:var(--ink);text-decoration-color:var(--signal);text-decoration-thickness:2px;text-underline-offset:3px}
a:hover{color:var(--signal)}
:focus-visible{outline:3px solid var(--signal);outline-offset:2px}
.skip{position:absolute;left:-9999px;top:0;background:var(--signal);color:var(--signal-ink);padding:10px 14px;z-index:100;font-weight:600}
.skip:focus{left:8px;top:8px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gutter)}
.mono,code,kbd{font-family:var(--f-mono);font-size:.92em;letter-spacing:0}
.vh{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ---------- App bar ---------- */
.appbar{position:sticky;top:0;z-index:50;background:var(--bar);color:var(--bar-ink);border-bottom:3px solid var(--signal)}
.appbar__in{display:flex;align-items:center;gap:20px;min-height:64px}
.brand{display:flex;align-items:center;gap:10px;color:var(--bar-ink);text-decoration:none;flex:0 0 auto}
.brand:hover{color:var(--bar-ink)}
.brand svg{width:32px;height:32px;flex:0 0 32px}
.brand__name{font-family:var(--f-head);font-weight:700;font-size:1.45rem;line-height:1;letter-spacing:.01em;white-space:nowrap}
.lookup{position:relative;flex:1 1 auto;max-width:560px}
.lookup__field{display:flex;align-items:stretch;background:var(--bar-2);border:1px solid var(--bar-rule)}
.lookup__field:focus-within{border-color:var(--signal);box-shadow:0 0 0 2px var(--signal)}
.lookup__tag{display:flex;align-items:center;padding:0 10px;font-family:var(--f-head);font-weight:600;font-size:.95rem;color:#b9c0c3;border-right:1px solid var(--bar-rule);white-space:nowrap}
.lookup input{flex:1;min-width:0;background:transparent;border:0;color:var(--bar-ink);font-family:var(--f-mono);font-size:1rem;padding:10px 12px;outline:none}
.lookup button.go{background:var(--signal);color:var(--signal-ink);border:0;font-family:var(--f-head);font-weight:700;font-size:1.05rem;padding:0 16px;cursor:pointer}
.lookup button.go:hover{filter:brightness(1.08)}
.results{position:absolute;left:0;right:0;top:100%;margin:0;padding:0;list-style:none;background:var(--paper);color:var(--ink);border:2px solid var(--rule-strong);border-top:0;max-height:min(420px,70vh);overflow:auto;box-shadow:0 10px 24px rgba(0,0,0,.25)}
.results[hidden]{display:none}
.results li{border-top:1px solid var(--rule)}
.results li:first-child{border-top:0}
.results a{display:grid;grid-template-columns:1fr auto;gap:2px 12px;padding:10px 12px;text-decoration:none;color:var(--ink)}
.results a .r-name{font-weight:600}
.results a .r-kind{font-family:var(--f-head);font-size:.9rem;color:var(--ink-2);align-self:center}
.results a .r-why{grid-column:1/-1;font-family:var(--f-mono);font-size:.8rem;color:var(--ink-2)}
.results li[aria-selected="true"] a,.results a:hover{background:var(--signal-tint)}
.results .r-empty{padding:12px;font-size:.95rem}
.nav{display:flex;gap:4px;margin-left:auto}
.nav a{color:var(--bar-ink);text-decoration:none;font-family:var(--f-head);font-weight:600;font-size:1.08rem;padding:8px 10px}
.nav a:hover,.nav a[aria-current="page"]{color:#fff;box-shadow:inset 0 -3px 0 var(--signal)}
.menu-btn{display:none;margin-left:auto;background:transparent;border:1px solid var(--bar-rule);color:var(--bar-ink);font-family:var(--f-head);font-weight:600;font-size:1rem;padding:6px 12px;cursor:pointer}
.nav-mobile[hidden]{display:none}
.nav-mobile:not([hidden]){display:flex;flex-direction:column;background:var(--bar-2);border-top:1px solid var(--bar-rule)}
.nav-mobile a{color:var(--bar-ink);text-decoration:none;font-family:var(--f-head);font-weight:600;font-size:1.15rem;padding:12px var(--gutter);border-bottom:1px solid var(--bar-rule)}
.nav-mobile a:hover{background:var(--bar)}

/* ---------- Type ---------- */
h1,h2,h3,h4{font-family:var(--f-head);font-weight:700;line-height:1.08;margin:0;letter-spacing:.005em}
h1{font-size:clamp(2.1rem,4.6vw,3.3rem)}
h2{font-size:clamp(1.55rem,2.6vw,2rem)}
h3{font-size:1.3rem}
p{margin:0 0 1em}
.lede{font-size:1.15rem;max-width:68ch;color:var(--ink)}
.muted{color:var(--ink-2)}
small,.small{font-size:.88rem}

/* ---------- Page heads ---------- */
.crumbs{font-size:.9rem;padding:16px 0 0;color:var(--ink-2)}
.crumbs ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px}
.crumbs li+li::before{content:"/";margin-right:6px;color:var(--rule)}
.crumbs a{color:var(--ink-2)}
.pagehead{padding:18px 0 6px}
.pagehead h1{margin:6px 0 14px;max-width:24ch}
.idline{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px}
.idchip{font-family:var(--f-mono);font-size:.88rem;border:1px solid var(--rule-strong);padding:3px 8px;background:var(--paper)}
.idchip b{font-weight:500;color:var(--signal)}

/* ---------- Hero (home) ---------- */
.hero{border-bottom:3px solid var(--rule-strong)}
.hero__grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:40px;padding-top:40px;padding-bottom:36px;align-items:start}
.hero h1{max-width:16ch;margin-bottom:16px}
.biglookup{margin:22px 0 14px}
.biglookup label{display:block;font-family:var(--f-head);font-weight:700;font-size:1.2rem;margin-bottom:6px}
.biglookup .lookup{max-width:none}
.biglookup .lookup__field{background:var(--paper);border:2px solid var(--rule-strong)}
.biglookup .lookup__field:focus-within{border-color:var(--signal);box-shadow:0 0 0 2px var(--signal)}
.biglookup .lookup__tag{color:var(--ink-2);border-right:2px solid var(--rule-strong);font-size:1.05rem}
.biglookup input{color:var(--ink);font-size:1.2rem;padding:14px}
.biglookup button.go{font-size:1.2rem;padding:0 22px}
.biglookup .hint{font-size:.92rem;color:var(--ink-2);margin-top:8px}
.tries{display:flex;flex-wrap:wrap;gap:6px;margin:8px 0 0;padding:0;list-style:none}
.tries button{font-family:var(--f-mono);font-size:.88rem;background:var(--paper-2);color:var(--ink);border:1px solid var(--rule);padding:4px 9px;cursor:pointer}
.tries button:hover{border-color:var(--signal);color:var(--signal)}
.plate{border:2px solid var(--rule-strong);background:var(--paper)}
.plate__head{display:flex;justify-content:space-between;align-items:baseline;gap:12px;padding:10px 14px;border-bottom:2px solid var(--rule-strong);background:var(--paper-2)}
.plate__head h2{font-size:1.3rem}
.plate__head .mono{font-size:.8rem;color:var(--ink-2)}
.plate figure{margin:0;padding:12px 14px 4px}
.plate ol.legend{margin:0;padding:0 14px 12px;list-style:none;counter-reset:none}
.legend li{display:grid;grid-template-columns:30px 1fr;gap:8px;padding:8px 0;border-top:1px solid var(--rule);font-size:.95rem}
.legend li:first-child{border-top:0}
.legend .key{font-family:var(--f-mono);font-weight:500;display:inline-flex;width:24px;height:24px;align-items:center;justify-content:center;background:var(--ink);color:var(--paper);font-size:.82rem}
.eng-svg .ln{stroke:var(--ink);fill:none;stroke-width:2}
.eng-svg .fl{fill:var(--paper-2);stroke:var(--ink);stroke-width:2}
.eng-svg .fl2{fill:var(--paper-3);stroke:var(--ink);stroke-width:2}
.eng-svg .thin{stroke:var(--ink-2);stroke-width:1.2;fill:none}
.eng-svg .call{stroke:var(--signal);stroke-width:2;fill:none}
.eng-svg .dot{fill:var(--signal)}
.eng-svg .tagbg{fill:var(--ink)}
.eng-svg .tagtx{fill:var(--paper);font-family:var(--f-mono);font-size:13px;font-weight:500}
.eng-svg .lbl{fill:var(--ink-2);font-family:var(--f-body);font-size:11px}

/* ---------- Sections ---------- */
.sec{padding-top:40px;padding-bottom:8px}
.sec__head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:8px 24px;border-top:3px solid var(--rule-strong);padding-top:12px;margin-bottom:18px}
.sec__head p{margin:0;color:var(--ink-2);max-width:62ch}
.sub{margin:30px 0 10px}
.sub h3{border-bottom:1px solid var(--rule-strong);padding-bottom:6px}
.cols2{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:32px}

/* Spec rows */
.spec{margin:0;border-top:2px solid var(--rule-strong)}
.spec .row{display:grid;grid-template-columns:minmax(150px,34%) 1fr;gap:16px;padding:9px 0;border-bottom:1px solid var(--rule)}
.spec dt{color:var(--ink-2);font-size:.95rem}
.spec dd{margin:0;font-weight:500}
.spec dd .mono{font-weight:500}
.spec dd .note{display:block;font-weight:400;font-size:.88rem;color:var(--ink-2)}

/* Tables */
.tbl-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;border-top:2px solid var(--rule-strong)}
table{border-collapse:collapse;width:100%;font-size:.96rem}
th,td{text-align:left;vertical-align:top;padding:9px 10px;border-bottom:1px solid var(--rule)}
th{font-family:var(--f-head);font-weight:700;font-size:1.02rem;background:var(--paper-2);border-bottom:2px solid var(--rule-strong)}
td:first-child,th:first-child{padding-left:0}
th:first-child{padding-left:8px}
td.num,td .mono{white-space:nowrap}
td.num{font-family:var(--f-mono)}
tr:hover td{background:color-mix(in srgb,var(--signal-tint) 45%,transparent)}
.idx td:first-child{padding-left:8px;min-width:150px}
.idx a{font-weight:600}

/* Procedure tables */
.proc{margin:20px 0 28px}
.proc h3{display:flex;justify-content:space-between;align-items:baseline;gap:12px;border-bottom:2px solid var(--rule-strong);padding-bottom:6px}
.proc h3 .mono{font-family:var(--f-mono);font-size:.8rem;font-weight:400;color:var(--ink-2)}
.proc .when{font-size:.95rem;color:var(--ink-2);margin:8px 0 6px}
.steps{width:100%;border-collapse:collapse}
.steps td{border-bottom:1px solid var(--rule);padding:10px 8px}
.steps td.n{width:44px;font-family:var(--f-mono);font-weight:500;color:var(--signal);font-size:1rem;padding-left:4px}
.steps td.chk{width:34%;font-size:.9rem;color:var(--ink-2)}
.safety{display:grid;grid-template-columns:auto 1fr;gap:10px;align-items:start;border:2px solid var(--rule-strong);background:var(--paper-2);padding:10px 12px;margin:10px 0 12px;font-size:.98rem}
.safety svg{width:22px;height:22px;margin-top:1px}
.safety strong{font-family:var(--f-head);font-size:1.08rem;margin-right:4px}
.callout{border-left:6px solid var(--signal);background:var(--signal-tint);padding:10px 14px;margin:14px 0;font-size:.98rem}
ul.plain{margin:0;padding:0;list-style:none}
ul.plain li{padding:7px 0;border-bottom:1px solid var(--rule)}
ul.ticks{margin:0 0 1em;padding-left:1.1em}
ul.ticks li{margin:4px 0}
.docs li{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}
.docs li span{color:var(--ink-2);font-size:.9rem}

/* Job index rows */
.jobs{border-top:2px solid var(--rule-strong)}
.jobs a{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr) 170px;gap:6px 20px;align-items:baseline;padding:12px 8px;border-bottom:1px solid var(--rule);text-decoration:none;color:var(--ink)}
.jobs a:hover{background:var(--signal-tint)}
.jobs .j-name{font-family:var(--f-head);font-weight:700;font-size:1.25rem}
.jobs .j-sym{color:var(--ink-2);font-size:.95rem}
.jobs .j-fits{font-family:var(--f-mono);font-size:.8rem;color:var(--ink-2);text-align:right}
.request{display:grid;grid-template-columns:1fr auto;gap:18px;align-items:center;border:2px solid var(--rule-strong);padding:16px 18px;margin:36px 0 10px;background:var(--paper)}
.request h2{font-size:1.45rem;margin-bottom:4px}
.request p{margin:0;color:var(--ink-2)}
.btn{display:inline-block;background:var(--signal);color:var(--signal-ink);text-decoration:none;font-family:var(--f-head);font-weight:700;font-size:1.12rem;padding:10px 18px;border:2px solid var(--signal)}
.btn:hover{color:var(--signal-ink);filter:brightness(1.08)}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--rule-strong)}
.btn--ghost:hover{color:var(--signal);filter:none;border-color:var(--signal)}
.prose{max-width:72ch}
.prose h2{margin:34px 0 10px;border-top:3px solid var(--rule-strong);padding-top:12px}
.prose h3{margin:22px 0 8px}
.prose ul{padding-left:1.2em}
.prose li{margin:4px 0}

/* ---------- Footer ---------- */
.foot{margin-top:56px;background:var(--bar);color:var(--bar-ink);font-size:.93rem}
.foot a{color:var(--bar-ink);text-decoration:none}
.foot a:hover{color:#fff;text-decoration:underline;text-decoration-color:var(--signal)}
.foot__grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:24px;padding:32px 0 24px;border-bottom:1px solid var(--bar-rule)}
.foot h2{font-size:1.05rem;color:#c9cfd2;border-bottom:1px solid var(--bar-rule);padding-bottom:6px;margin-bottom:8px}
.foot ul{list-style:none;margin:0;padding:0}
.foot li{padding:3px 0;line-height:1.3}
.foot li .mono{font-size:.78rem;color:#9aa3a7;display:block}
.foot__base{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px 24px;padding:16px 0 26px;color:#b4bbbe}
.foot__base p{margin:0;max-width:78ch}
.theme-tg{background:transparent;border:1px solid var(--bar-rule);color:var(--bar-ink);font-family:var(--f-head);font-size:.95rem;padding:4px 10px;cursor:pointer}

/* ---------- 404 ---------- */
.nf{padding-top:56px;padding-bottom:20px}
.nf .code{font-family:var(--f-mono);font-size:1rem;color:var(--ink-2);margin:0 0 6px}

/* ---------- Responsive ---------- */
@media (max-width:1020px){
  .nav{display:none}
  .menu-btn{display:inline-block}
  .foot__grid{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:860px){
  .hero__grid{grid-template-columns:1fr;gap:26px;padding-top:28px}
  .cols2{grid-template-columns:1fr;gap:8px}
  .jobs a{grid-template-columns:1fr}
  .jobs .j-fits{text-align:left}
}
@media (max-width:720px){
  :root{--gutter:16px}
  body{font-size:16px}
  .appbar__in{flex-wrap:wrap;gap:10px;padding-top:8px;padding-bottom:8px}
  .appbar .lookup{order:3;flex:1 0 100%;max-width:none}
  .lookup__tag{display:none}
  .spec .row{grid-template-columns:1fr;gap:2px}
  .steps td.chk{display:block;width:auto;padding:0 8px 10px 52px;border-bottom:1px solid var(--rule)}
  .steps tr td.chk{border-top:0}
  .steps td.n,.steps td.act{border-bottom:0}
  .steps tr{display:block}
  .steps td.n{display:inline-block;vertical-align:top}
  .steps td.act{display:inline-block;width:calc(100% - 52px)}
  .request{grid-template-columns:1fr}
  .foot__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important;scroll-behavior:auto!important}}
@media print{.appbar,.foot,.lookup,.menu-btn{display:none!important}body{background:#fff;color:#000}}