:root{
  --bg:#eef3f8; --panel:#fff; --ink:#152230; --muted:#657586; --line:#dde5ee;
  --brand:#1a6fb5; --brand-ink:#0e4c80; --accent:#0fae8b; --warn:#e8730c;
  --sky1:#3a7bd5; --sky2:#8fc4e8; --slate:#31465c;
  --radius:12px; --shadow:0 1px 3px rgba(20,32,44,.08),0 6px 18px rgba(20,32,44,.06);
  --maxw:1320px;
}
*{box-sizing:border-box}
.bar-inner{max-width:var(--maxw);margin:0 auto;padding:0 22px;display:flex;align-items:center}
body{margin:0;font:15px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--ink);background:var(--bg)}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{margin:0 0 .4em}

/* header */
.site-header{padding:12px 0;background:var(--panel);
  border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;box-shadow:var(--shadow)}
.site-header .bar-inner{gap:18px}
.brand{font-weight:800;font-size:22px;letter-spacing:-.5px;color:var(--ink);display:flex;align-items:center;gap:6px}
.brand span{color:var(--brand)}
.brand em{font-style:normal;color:var(--sky1);font-size:18px;transform:rotate(-8deg)}
.brand:hover{text-decoration:none}
.ai-bar{flex:1;display:flex;max-width:720px;gap:0}
.ai-bar input{flex:1;padding:11px 14px;border:1px solid var(--line);border-right:0;
  border-radius:10px 0 0 10px;font-size:15px;outline:none}
.ai-bar input:focus{border-color:var(--brand)}
.ai-bar button{padding:0 20px;border:0;background:var(--brand);color:#fff;font-weight:600;
  border-radius:0 10px 10px 0;cursor:pointer}
.ai-bar button:hover{background:var(--brand-ink)}
.header-link{color:var(--muted);font-weight:600;font-size:14px}

/* sub-nav — type quick-picks */
.subnav{padding:10px 0;background:linear-gradient(90deg,#0e4c80,#1a6fb5);}
.subnav .bar-inner{gap:10px;flex-wrap:wrap}
.subnav-lead{font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.5px;color:#bfdcf3;margin-right:4px}
.pick{color:#eaf3fb;font-size:13.5px;font-weight:600;padding:5px 12px;border:1px solid rgba(255,255,255,.28);
  border-radius:20px;background:rgba(255,255,255,.08)}
.pick:hover{background:#fff;color:var(--brand-ink);text-decoration:none}

/* SRP layout */
.srp{display:grid;grid-template-columns:268px 1fr;gap:22px;max-width:var(--maxw);margin:22px auto;padding:0 22px}
.filters{position:sticky;top:78px;align-self:start}
.filters form{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:16px;box-shadow:var(--shadow)}
.filters-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px}
.filters-head h2{font-size:16px;margin:0}
.clear{font-size:13px;color:var(--muted)}
.filter{display:block;margin:14px 0 0;border:0;padding:0}
.filter>span{display:block;font-size:12px;font-weight:700;text-transform:uppercase;
  letter-spacing:.4px;color:var(--muted);margin-bottom:5px}
.filter select,.filter input[type=number]{width:100%;padding:9px 10px;border:1px solid var(--line);
  border-radius:9px;font-size:14px;background:#fff}
.filter select:focus,.filter input:focus{outline:none;border-color:var(--brand)}
.range{display:flex;gap:8px}
.checks .chk{display:flex;align-items:center;gap:8px;font-size:13.5px;font-weight:500;
  text-transform:none;letter-spacing:0;color:var(--ink);margin:7px 0}
.checks .chk input{width:auto}
.apply{margin-top:14px;width:100%;padding:10px;background:var(--brand);color:#fff;border:0;
  border-radius:9px;font-weight:600;cursor:pointer}

/* results */
.results-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px;flex-wrap:wrap;gap:10px}
.results-head strong{font-size:20px}
.chip{display:inline-flex;gap:6px;align-items:center;background:#eaf1fd;color:var(--brand-ink);
  padding:3px 10px;border-radius:20px;font-size:13px;margin-left:8px}
.chip a{color:var(--brand-ink);font-weight:700}
.sortform{display:flex;gap:12px;align-items:center}
.sortform label{color:var(--muted);font-size:13px}
.sortform select{padding:8px 10px;border:1px solid var(--line);border-radius:9px;background:#fff}

.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(232px,1fr));gap:16px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);transition:transform .12s,box-shadow .12s;color:inherit;display:block}
.card:hover{text-decoration:none;transform:translateY(-3px);
  box-shadow:0 4px 10px rgba(20,32,44,.12),0 12px 30px rgba(20,32,44,.1)}
.card-photo{position:relative;aspect-ratio:4/3;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:6px;color:#fff;
  background:linear-gradient(135deg,var(--sky1),var(--sky2))}
.card-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.ac-icon{font-size:44px;line-height:1;opacity:.92;filter:drop-shadow(0 2px 4px rgba(0,0,0,.25))}
.cat-tag{font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.5px;
  background:rgba(0,0,0,.22);padding:2px 10px;border-radius:20px}
.pcount{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.45);color:#fff;
  font-size:11px;padding:2px 7px;border-radius:6px}
/* per-type placeholder tints */
.cat-Jet{background:linear-gradient(135deg,#243b55,#4b79a1)}
.cat-Turboprop{background:linear-gradient(135deg,#1a6fb5,#57b0e0)}
.cat-Helicopter{background:linear-gradient(135deg,#2c7744,#5aa469)}
.cat-MultiEnginePiston{background:linear-gradient(135deg,#3a6073,#6a9bb5)}
.cat-SingleEnginePiston{background:linear-gradient(135deg,#3a7bd5,#8fc4e8)}
.cat-Other{background:linear-gradient(135deg,#5b6b7c,#93a3b3)}
.card-body{padding:12px 13px 14px}
.card-title{font-weight:700;font-size:15px;line-height:1.25}
.card-trim{color:var(--muted);font-size:13px;min-height:18px;margin-bottom:8px}
.card-meta{display:flex;justify-content:space-between;align-items:baseline}
.price{font-weight:800;font-size:18px;color:var(--ink)}
.miles{color:var(--muted);font-size:13px}
.card-specs{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.card-specs span{font-size:11px;background:#eef2f6;color:#46535f;padding:3px 8px;border-radius:6px}

.empty{background:var(--panel);padding:30px;border-radius:var(--radius);text-align:center;color:var(--muted)}
.pager{display:flex;gap:16px;align-items:center;justify-content:center;margin:24px 0}
.pager span{color:var(--muted)}

/* smart-search interpretation banner */
.ai-note{background:#eef7f4;border:1px solid #cdeae1;border-radius:10px;padding:10px 14px;
  margin-bottom:14px;font-size:13.5px;color:#0c6b56;display:none}
.ai-note.show{display:block}
.ai-note b{color:#0a5544}
.ai-note .tag{display:inline-block;background:#fff;border:1px solid #cdeae1;border-radius:6px;
  padding:1px 7px;margin:2px 3px 0 0;font-size:12px;color:#0c6b56}

/* VDP */
.vdp{max-width:1180px;margin:18px auto;padding:0 22px}
.back{font-size:14px;color:var(--muted)}
.vdp-grid{display:grid;grid-template-columns:minmax(0,560px) 1fr;gap:24px;margin-top:10px;align-items:start}
.vdp img{max-width:100%}
.main-photo{width:100%;aspect-ratio:4/3;border-radius:var(--radius);box-shadow:var(--shadow);
  background:linear-gradient(135deg,var(--sky1),var(--sky2))}
.nophoto-lg{display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:10px;color:#fff;font-size:16px;font-weight:600;text-transform:uppercase;letter-spacing:1px}
.ac-icon-lg{font-size:96px;line-height:1;filter:drop-shadow(0 4px 8px rgba(0,0,0,.3))}
.photo-note{display:block;margin-top:12px;text-align:center;background:var(--panel);
  border:1px solid var(--line);border-radius:10px;padding:11px;font-weight:600;box-shadow:var(--shadow)}

/* VDP carousel */
/* min-width:0 lets the flexible grid column shrink instead of being blown out
   to the thumbnail strip's (very wide) min-content size. */
.gallery{min-width:0}
.carousel{min-width:0}
.carousel-stage{position:relative;border-radius:var(--radius);overflow:hidden;
  background:#0d1a26;box-shadow:var(--shadow);aspect-ratio:4/3}
.car-slide{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;
  background:#0d1a26;opacity:0;transition:opacity .2s;cursor:zoom-in;display:none}
.car-slide.active{opacity:1;display:block}
.car-nav{position:absolute;top:50%;transform:translateY(-50%);z-index:2;border:0;
  width:44px;height:44px;border-radius:50%;background:rgba(0,0,0,.5);color:#fff;
  font-size:26px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center}
.car-nav:hover{background:rgba(0,0,0,.75)}
.car-nav.prev{left:10px}.car-nav.next{right:10px}
.car-count{position:absolute;bottom:10px;left:50%;transform:translateX(-50%);z-index:2;
  background:rgba(0,0,0,.55);color:#fff;font-size:12px;padding:3px 12px;border-radius:20px;white-space:nowrap}
.thumbs{display:grid;grid-auto-flow:column;grid-auto-columns:82px;gap:8px;margin-top:10px;
  overflow-x:auto;padding-bottom:4px;scrollbar-width:thin;min-width:0;max-width:100%}
.thumb{width:82px;aspect-ratio:4/3;object-fit:cover;border-radius:8px;cursor:pointer;
  border:2px solid transparent;opacity:.65;transition:opacity .15s}
.thumb.active,.thumb:hover{border-color:var(--brand);opacity:1}

/* lightbox / zoom overlay */
.lightbox{position:fixed;inset:0;z-index:100;background:rgba(6,12,20,.94);
  display:none;align-items:center;justify-content:center}
.lightbox.open{display:flex}
.lb-img{max-width:94vw;max-height:90vh;object-fit:contain;border-radius:6px;box-shadow:0 10px 40px rgba(0,0,0,.6)}
.lb-nav{position:absolute;top:50%;transform:translateY(-50%);border:0;width:56px;height:56px;
  border-radius:50%;background:rgba(255,255,255,.14);color:#fff;font-size:32px;cursor:pointer}
.lb-nav:hover{background:rgba(255,255,255,.28)}
.lb-nav.prev{left:16px}.lb-nav.next{right:16px}
.lb-close{position:absolute;top:16px;right:20px;border:0;background:transparent;color:#fff;
  font-size:40px;line-height:1;cursor:pointer}
.lb-count{position:absolute;bottom:20px;left:50%;transform:translateX(-50%);color:#dbe6f0;font-size:14px}
.summary{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow);align-self:start}
.cat-pill{display:inline-block;background:#eaf1fd;color:var(--brand-ink);font-size:12px;
  font-weight:700;text-transform:uppercase;letter-spacing:.5px;padding:3px 11px;border-radius:20px;margin-bottom:10px}
.summary h1{font-size:25px;line-height:1.2}
.summary .sub{color:var(--muted);margin-bottom:14px}
.price-row{display:flex;align-items:baseline;gap:12px;margin-bottom:16px}
.price-row .price{font-size:30px}
.cta-group{display:flex;flex-direction:column;gap:9px;margin-bottom:16px}
.cta{display:block;text-align:center;padding:13px;border-radius:10px;font-weight:700}
.cta:hover{text-decoration:none;filter:brightness(1.07)}
.cta-lead{background:var(--brand);color:#fff}
.cta-src{background:#eef2f6;color:var(--slate);border:1px solid var(--line)}
.keyfacts{display:grid;grid-template-columns:1fr 1fr;gap:12px 18px;padding:16px 0 0;border-top:1px solid var(--line)}
.keyfacts label{display:block;font-size:11px;text-transform:uppercase;letter-spacing:.4px;color:var(--muted)}
.keyfacts div{font-weight:600}

/* seller box */
.seller-box{margin-top:16px;padding-top:16px;border-top:1px solid var(--line)}
.sb-label{font-size:11px;text-transform:uppercase;letter-spacing:.4px;color:var(--muted);margin-bottom:4px}
.sb-name{font-size:17px;font-weight:700;margin-bottom:8px}
.sb-row{display:flex;gap:8px;align-items:flex-start;font-size:14px;margin:4px 0;color:#3a4651}
.sb-ic{width:18px;flex:0 0 18px;text-align:center}
.sb-rating{margin-top:8px;font-size:13px;color:var(--warn);font-weight:700}
.sb-rating span{color:var(--muted);font-weight:500}
.ob-src{font-weight:600;color:var(--muted);text-transform:none;letter-spacing:0}
.ob-type{font-size:11px;font-weight:700;background:#eef2f6;color:#46535f;padding:2px 8px;border-radius:20px;vertical-align:middle}

.vdp-detail{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:24px}
.vdp-detail section{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;box-shadow:var(--shadow)}
.specs table,.spec-block table{width:100%;border-collapse:collapse}
.specs th,.spec-block th{text-align:left;color:var(--muted);font-weight:600;padding:7px 10px 7px 0;
  width:44%;vertical-align:top;font-size:13.5px}
.specs td,.spec-block td{padding:7px 0;border-bottom:1px solid var(--line);vertical-align:top}
.equip-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:14px}
.equip-tags span{font-size:12px;font-weight:600;background:#eaf1fd;color:var(--brand-ink);padding:4px 10px;border-radius:20px}
.description{grid-column:auto}
.description p{white-space:pre-wrap;color:#3a4651}
.description h3{font-size:14px;margin-top:14px;color:var(--slate)}

/* make/model distribution charts */
.compare{margin-top:26px}
.compare h2{font-size:20px}
.compare-lead{color:var(--muted);margin:0 0 16px}
.dist-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:18px}
.dist-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:16px 18px;box-shadow:var(--shadow);min-width:0}
.dist-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:4px}
.dist-head h3{font-size:15px;margin:0;color:var(--slate)}
.pctile{font-size:15px;font-weight:800;color:var(--brand-ink)}
.pctile sup{font-size:9px;font-weight:700}
.dist{width:100%;height:auto;display:block;overflow:visible}
.dist-fill{fill:var(--brand);opacity:.14}
.dist-line{stroke:var(--brand);stroke-width:2}
.dist-axis{stroke:var(--line);stroke-width:1}
.dist-tick{fill:var(--muted);font-size:11px;font-weight:600}
.dist-marker{stroke:var(--warn);stroke-width:2;stroke-dasharray:4 3}
.dist-dot{fill:var(--warn);stroke:#fff;stroke-width:1.5}
.dist-mark-label{fill:var(--warn);font-size:11px;font-weight:800}
.dist-cap{margin:8px 0 0;font-size:13px;color:var(--muted)}
.dist-cap strong{color:var(--ink)}
.compare-foot{margin:14px 0 0;font-size:12px;color:var(--muted)}

.spec-sections{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:20px;margin-top:24px}
.spec-block{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 20px;box-shadow:var(--shadow)}
.spec-block h3{font-size:15px;color:var(--brand-ink);margin-bottom:8px}

.cta-footer{margin:26px 0 6px;text-align:center}
.cta-footer .cta{display:inline-block;min-width:340px}

.related{margin-top:28px}
.related h2{font-size:20px;margin-bottom:14px}
.related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}

/* avionics guide */
.avionics-page{max-width:1000px;margin:24px auto 40px;padding:0 22px}
.avionics-page h1{font-size:26px}
.av-lead{color:var(--muted);margin:0 0 18px;max-width:720px}
.av-controls{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;flex-wrap:wrap}
.av-cats{display:flex;flex-wrap:wrap;gap:8px}
.av-cat{display:inline-flex;gap:6px;align-items:center;padding:7px 13px;border:1px solid var(--line);
  border-radius:20px;background:var(--panel);font-weight:600;font-size:13.5px;color:var(--slate)}
.av-cat span{background:#eef2f6;color:#46535f;border-radius:20px;padding:0 7px;font-size:12px}
.av-cat.active{background:var(--brand);color:#fff;border-color:var(--brand)}
.av-cat.active span{background:rgba(255,255,255,.25);color:#fff}
.av-cat:hover{text-decoration:none;border-color:var(--brand)}
.av-search{display:flex;gap:6px;align-items:center}
.av-search input{padding:9px 12px;border:1px solid var(--line);border-radius:9px;font-size:14px;min-width:200px}
.av-search button{padding:9px 16px;border:0;background:var(--brand);color:#fff;font-weight:600;border-radius:9px;cursor:pointer}
.av-clear{font-size:13px;color:var(--muted)}
.av-count{color:var(--muted);font-size:13px;margin:14px 0 6px}
.av-tablewrap{overflow-x:auto;background:var(--panel);border:1px solid var(--line);
  border-radius:var(--radius);box-shadow:var(--shadow)}
.av-table{width:100%;border-collapse:collapse;font-size:14px}
.av-table th{text-align:left;padding:11px 16px;background:#f4f7fa;color:var(--muted);
  font-size:12px;text-transform:uppercase;letter-spacing:.4px;border-bottom:1px solid var(--line)}
.av-table td{padding:10px 16px;border-bottom:1px solid var(--line);vertical-align:top}
.av-table tr:last-child td{border-bottom:0}
.av-table tbody tr:hover{background:#f8fafc}
.av-tag{display:inline-block;background:#eaf1fd;color:var(--brand-ink);font-size:12px;
  font-weight:600;padding:2px 9px;border-radius:20px;white-space:nowrap}
.av-foot{margin:14px 0 0;font-size:12px;color:var(--muted)}

/* legal */
.legal{max-width:820px;margin:24px auto 40px;padding:28px 32px;background:var(--panel);
  border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.legal h1{font-size:26px;margin-bottom:18px}
.legal h2{font-size:17px;margin:24px 0 6px;color:var(--brand-ink)}
.legal p{color:#3a4651;line-height:1.65;margin:0 0 4px}

.site-footer{display:flex;flex-direction:column;align-items:center;gap:6px;
  text-align:center;color:var(--muted);padding:30px;font-size:13px}
.footer-links{display:flex;gap:18px;flex-wrap:wrap;justify-content:center}
.site-footer a{color:var(--muted);font-weight:600}
.site-footer a:hover{color:var(--brand)}

@media(max-width:880px){
  .srp{grid-template-columns:1fr}
  .filters{position:static}
  .vdp-grid,.vdp-detail{grid-template-columns:1fr}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .cta-footer .cta{min-width:0;width:100%}
}