*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--bg:#0f1117;--bg2:#161822;--bg3:#1c1f2e;--surface:#1e2130;--border:#2a2d3e;--border2:#374151;--text:#e2e8f0;--text2:#94a3b8;--text3:#64748b;--accent:#3b82f6;--accent2:#2563eb;--green:#22c55e;--yellow:#eab308;--red:#ef4444;--orange:#f97316;--radius:12px;--radius-sm:8px;--shadow:0 4px 24px rgba(0,0,0,.3);--font:system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6;min-height:100vh}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}
.site-header{background:var(--bg2);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}
.header-inner{max-width:1200px;margin:0 auto;padding:0 24px;display:flex;align-items:center;gap:24px;height:60px}
.logo{display:flex;align-items:center;gap:10px;color:var(--text);text-decoration:none;font-weight:700;font-size:1.1rem;white-space:nowrap}
.main-nav{display:flex;gap:4px;margin-left:auto}
.main-nav a{color:var(--text2);text-decoration:none;padding:8px 14px;border-radius:var(--radius-sm);font-size:.9rem;transition:color .2s,background .2s}
.main-nav a:hover{color:var(--text);background:var(--bg3)}
.nav-toggle{display:none;flex-direction:column;gap:4px;background:none;border:none;cursor:pointer;padding:4px}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--text2);border-radius:2px;transition:.2s}
.hero{padding:60px 24px 48px;text-align:center;background:linear-gradient(180deg,var(--bg2) 0%,var(--bg) 100%)}
.hero-content{max-width:680px;margin:0 auto}
.hero h1{font-size:clamp(1.8rem,4vw,2.6rem);font-weight:800;line-height:1.2;margin-bottom:16px;background:linear-gradient(135deg,var(--text) 0%,var(--accent) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-sub{color:var(--text2);font-size:1.1rem;margin-bottom:32px;max-width:560px;margin-left:auto;margin-right:auto}
.search-wrap{display:flex;gap:12px;max-width:480px;margin:0 auto 12px}
.code-input{flex:1;background:var(--bg3);border:2px solid var(--border);color:var(--text);padding:14px 18px;border-radius:var(--radius);font-size:1.2rem;font-family:monospace;letter-spacing:2px;text-transform:uppercase;transition:border-color .2s}
.code-input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(59,130,246,.15)}
.code-input::placeholder{color:var(--text3);letter-spacing:1px;text-transform:none;font-size:1rem}
.btn-primary{background:var(--accent2);color:#fff;border:none;padding:14px 28px;border-radius:var(--radius);font-size:1rem;font-weight:600;cursor:pointer;transition:background .2s,transform .1s;white-space:nowrap}
.btn-primary:hover{background:var(--accent);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.input-hint{color:var(--text3);font-size:.85rem;margin-bottom:24px}
.quick-codes{display:flex;align-items:center;justify-content:center;gap:8px;flex-wrap:wrap}
.quick-label{color:var(--text3);font-size:.85rem}
.chip{background:var(--bg3);border:1px solid var(--border);color:var(--text2);padding:6px 14px;border-radius:20px;font-size:.85rem;font-family:monospace;cursor:pointer;transition:all .2s}
.chip:hover{border-color:var(--accent);color:var(--text);background:var(--surface)}
.result-area{max-width:900px;margin:0 auto;padding:40px 24px}
.empty-state{text-align:center;padding:48px 24px;color:var(--text3)}
.empty-state svg{margin-bottom:16px}
.empty-state h2{font-size:1.2rem;color:var(--text2);margin-bottom:8px}
.code-result{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:32px}
.result-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:20px;flex-wrap:wrap;gap:16px}
.result-code-wrap{display:flex;align-items:center;gap:16px}
.result-code{font-size:2rem;font-weight:800;font-family:monospace;letter-spacing:3px;color:var(--text)}
.severity-badge{padding:6px 16px;border-radius:20px;font-size:.85rem;font-weight:700;text-transform:uppercase;letter-spacing:.5px}
.severity-green{background:rgba(34,197,94,.15);color:var(--green);border:1px solid rgba(34,197,94,.3)}
.severity-yellow{background:rgba(234,179,8,.15);color:var(--yellow);border:1px solid rgba(234,179,8,.3)}
.severity-red{background:rgba(239,68,68,.15);color:var(--red);border:1px solid rgba(239,68,68,.3)}
.result-actions{display:flex;gap:8px}
.btn-icon{background:var(--bg3);border:1px solid var(--border);color:var(--text2);width:36px;height:36px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s}
.btn-icon:hover{border-color:var(--accent);color:var(--text)}
.result-title{font-size:1.4rem;font-weight:700;margin-bottom:8px}
.result-desc{color:var(--text2);margin-bottom:28px;font-size:1.05rem}
.result-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:24px}
.result-card{background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius-sm);padding:20px}
.result-card h3{font-size:.8rem;text-transform:uppercase;letter-spacing:1px;color:var(--text3);margin-bottom:8px}
.result-card p{font-size:1.05rem;font-weight:600}
.result-card small{display:block;color:var(--text3);font-size:.8rem;margin-top:6px}
.combo-note{background:rgba(59,130,246,.08);border:1px solid rgba(59,130,246,.2);border-radius:var(--radius-sm);padding:20px;margin-top:8px}
.combo-note h3{font-size:.9rem;color:var(--accent);margin-bottom:8px}
.combo-note p{color:var(--text2);font-size:.95rem}
.not-found{text-align:center;padding:48px 24px}
.not-found h2{color:var(--orange);margin-bottom:12px}
.not-found p{color:var(--text2)}
.hidden{display:none!important}
.history-section{max-width:900px;margin:0 auto;padding:0 24px 40px}
.history-section h2{font-size:1.2rem;margin-bottom:4px}
.section-sub{color:var(--text3);font-size:.9rem;margin-bottom:20px}
.history-list{display:flex;flex-wrap:wrap;gap:8px}
.history-chip{display:flex;align-items:center;gap:8px;background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius-sm);padding:8px 14px;font-family:monospace;font-size:.9rem;cursor:pointer;transition:all .2s}
.history-chip:hover{border-color:var(--accent)}
.history-chip .hs{font-size:.7rem;padding:2px 8px;border-radius:10px;font-weight:700}
.symptom-index{max-width:900px;margin:0 auto;padding:40px 24px}
.symptom-index h2{font-size:1.4rem;margin-bottom:4px}
.symptom-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px;margin-top:24px}
.symptom-group{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}
.symptom-group summary{padding:18px 20px;cursor:pointer;font-size:.95rem;display:flex;justify-content:space-between;align-items:center;list-style:none}
.symptom-group summary::-webkit-details-marker{display:none}
.symptom-group summary::after{content:'+';font-size:1.2rem;color:var(--text3);transition:transform .2s}
.symptom-group[open] summary::after{transform:rotate(45deg)}
.symptom-group summary:hover{background:var(--bg3)}
.count{color:var(--text3);font-size:.8rem}
.symptom-group ul{padding:0 20px 16px;list-style:none}
.symptom-group li{padding:8px 0;border-bottom:1px solid var(--border);font-size:.9rem;color:var(--text2);display:flex;align-items:center;gap:8px}
.symptom-group li:last-child{border-bottom:none}
.code-link{background:var(--bg3);border:1px solid var(--border);color:var(--accent);padding:2px 10px;border-radius:4px;font-family:monospace;font-size:.85rem;cursor:pointer;transition:all .2s}
.code-link:hover{border-color:var(--accent);background:rgba(59,130,246,.1)}
.combo-codes{max-width:900px;margin:0 auto;padding:40px 24px}
.combo-codes h2{font-size:1.4rem;margin-bottom:4px}
.combo-table-wrap{overflow-x:auto;margin-top:24px}
.combo-table{width:100%;border-collapse:collapse;background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}
.combo-table th{background:var(--bg3);padding:14px 18px;text-align:left;font-size:.8rem;text-transform:uppercase;letter-spacing:1px;color:var(--text3);border-bottom:1px solid var(--border)}
.combo-table td{padding:14px 18px;border-bottom:1px solid var(--border);font-size:.9rem;color:var(--text2);vertical-align:top}
.combo-table tr:last-child td{border-bottom:none}
.combo-table tr:hover td{background:rgba(255,255,255,.02)}
.combo-table code{background:var(--bg3);padding:2px 8px;border-radius:4px;font-size:.85rem;color:var(--accent)}
.mechanic-checklist{max-width:900px;margin:0 auto;padding:40px 24px}
.mechanic-checklist h2{font-size:1.4rem;margin-bottom:4px}
.checklist-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px;margin-top:24px}
.checklist-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:24px}
.checklist-card h3{font-size:1.05rem;margin-bottom:14px;padding-bottom:12px;border-bottom:1px solid var(--border)}
.checklist{list-style:none}
.checklist li{padding:8px 0;padding-left:24px;position:relative;font-size:.9rem;color:var(--text2)}
.checklist li::before{content:'✓';position:absolute;left:0;color:var(--green);font-weight:700}
.scanner-cta{max-width:900px;margin:0 auto;padding:40px 24px}
.scanner-inner{background:linear-gradient(135deg,var(--bg2) 0%,var(--surface) 100%);border:1px solid var(--border);border-radius:var(--radius);padding:40px;display:flex;align-items:center;gap:40px}
.scanner-text{flex:1}
.scanner-text h2{font-size:1.3rem;margin-bottom:12px}
.scanner-text p{color:var(--text2);font-size:.95rem;margin-bottom:8px}
.scanner-note{color:var(--text3)!important;font-size:.85rem!important}
.common-mistakes{max-width:900px;margin:0 auto;padding:40px 24px}
.common-mistakes h2{font-size:1.4rem;margin-bottom:24px}
.mistakes-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px}
.mistake-card{background:var(--bg2);border:1px solid var(--border);border-left:3px solid var(--orange);border-radius:var(--radius);padding:24px}
.mistake-card h3{font-size:1rem;margin-bottom:10px;color:var(--orange)}
.mistake-card p{color:var(--text2);font-size:.9rem}
.site-footer{background:var(--bg2);border-top:1px solid var(--border);margin-top:60px}
.footer-inner{max-width:1200px;margin:0 auto;padding:40px 24px}
.footer-top{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:20px;margin-bottom:24px}
.footer-brand{display:flex;align-items:center;gap:8px;font-weight:700;font-size:1rem}
.footer-links{display:flex;gap:20px}
.footer-links a{color:var(--text3);text-decoration:none;font-size:.9rem;transition:color .2s}
.footer-links a:hover{color:var(--text)}
.footer-bottom{border-top:1px solid var(--border);padding-top:20px}
.footer-bottom p{color:var(--text3);font-size:.85rem;margin-bottom:4px}
.footer-meta{display:flex;gap:16px;align-items:center}
.footer-meta a{color:var(--accent);text-decoration:none}
@media(max-width:768px){
.main-nav{display:none;position:absolute;top:60px;left:0;right:0;background:var(--bg2);border-bottom:1px solid var(--border);flex-direction:column;padding:12px 24px}
.main-nav.open{display:flex}
.nav-toggle{display:flex}
.hero{padding:40px 20px 32px}
.search-wrap{flex-direction:column}
.code-result{padding:20px}
.result-header{flex-direction:column}
.result-code{font-size:1.5rem}
.scanner-inner{flex-direction:column;text-align:center}
.footer-top{flex-direction:column;align-items:flex-start}
}
@media print{
.site-header,.site-footer,.scanner-cta,.history-section,.quick-codes,.result-actions,.nav-toggle{display:none!important}
body{background:#fff;color:#000}
.code-result{border:1px solid #ccc;background:#fff}
}



/* Factory-injected deployment helpers. The AI owns the site design above this block. */
.ad-unit {
  width: min(100%, 720px);
  min-height: 120px;
  margin: 24px auto;
  display: block;
}

.legal-page {
  width: min(900px, calc(100% - 32px));
  margin: 40px auto;
}

.factory-fallback-nav {
  width: min(900px, calc(100% - 32px));
  margin: 24px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: center;
  font-size: 0.95rem;
}

.factory-fallback-nav a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}