*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg-primary: #0f1117;--bg-card: #1a1b23;--bg-hover: #22232e;--text-primary: #e4e4e7;--text-muted: #a1a1aa;--text-dim: #71717a;--border: #2e2f3e;--accent: #6366f1;--accent-hover: #818cf8;--severity-critical: #ef4444;--severity-serious: #f97316;--severity-moderate: #eab308;--severity-minor: #22c55e;--font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;--font-mono: "SF Mono", "Cascadia Code", "Fira Code", Consolas, "Courier New", monospace;--radius: 8px;--radius-sm: 4px;--max-width: 1120px;--content-width: 760px}html{font-size:16px;scroll-behavior:smooth}body{background-color:var(--bg-primary);color:var(--text-primary);font-family:var(--font);line-height:1.7;min-height:100vh;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}h1,h2,h3,h4,h5,h6{line-height:1.3;font-weight:700;color:var(--text-primary)}h1{font-size:clamp(1.6rem,4vw,2.4rem);margin-bottom:.5rem}h2{font-size:clamp(1.25rem,3vw,1.75rem);margin-bottom:.5rem}h3{font-size:clamp(1.1rem,2.5vw,1.35rem);margin-bottom:.4rem}p{margin-bottom:1rem;color:var(--text-primary)}a{color:var(--accent-hover);text-decoration:none}a:hover{color:var(--accent);text-decoration:underline}ul,ol{padding-left:1.5rem;margin-bottom:1rem}li{margin-bottom:.35rem;line-height:1.7}code{font-family:var(--font-mono);background:var(--bg-card);border:1px solid var(--border);padding:.15em .4em;border-radius:var(--radius-sm);font-size:.9em;color:var(--accent-hover)}.container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 1rem}.content-width{max-width:var(--content-width)}.site-header{background:var(--bg-card);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100;padding:.75rem 0}.site-header .container{display:flex;align-items:center;justify-content:space-between;gap:1rem}.site-logo{font-size:1.25rem;font-weight:800;color:var(--text-primary);text-decoration:none;letter-spacing:-.02em;white-space:nowrap}.site-logo span{color:var(--accent-hover)}.site-logo:hover{text-decoration:none;color:var(--text-primary)}.header-search-icon{color:var(--text-muted);cursor:pointer;padding:.5rem;border-radius:var(--radius-sm);background:none;border:none;font-size:1.2rem;line-height:1}.header-search-icon:hover{color:var(--text-primary);background:var(--bg-hover)}.site-footer{border-top:1px solid var(--border);padding:2rem 0;margin-top:4rem;color:var(--text-dim);font-size:.875rem}.site-footer .container{display:flex;flex-direction:column;gap:.5rem;align-items:center;text-align:center}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:1.25rem;transition:border-color .15s ease,background .15s ease}.card:hover{border-color:var(--accent);background:var(--bg-hover)}.card a{text-decoration:none;display:block}.card a:hover{text-decoration:none}.code-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:1.25rem;transition:border-color .15s ease,transform .1s ease;display:flex;flex-direction:column;gap:.5rem}.code-card:hover{border-color:var(--accent);transform:translateY(-1px)}.code-card .code-id{font-family:var(--font-mono);font-size:1.1rem;font-weight:700;color:var(--accent-hover)}.code-card .code-desc{font-size:.9rem;color:var(--text-muted);line-height:1.5}.badge{display:inline-flex;align-items:center;padding:.2em .65em;border-radius:999px;font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;border:1px solid transparent}.badge-critical{background:#ef444426;color:var(--severity-critical);border-color:#ef44444d}.badge-serious{background:#f9731626;color:var(--severity-serious);border-color:#f973164d}.badge-moderate{background:#eab30826;color:var(--severity-moderate);border-color:#eab3084d}.badge-minor{background:#22c55e26;color:var(--severity-minor);border-color:#22c55e4d}.likelihood{font-size:.7rem;font-weight:600;padding:.15em .5em;border-radius:999px;text-transform:uppercase;letter-spacing:.04em;white-space:nowrap}.likelihood-very-high{background:#ef444426;color:var(--severity-critical)}.likelihood-high{background:#f9731626;color:var(--severity-serious)}.likelihood-moderate{background:#eab30826;color:var(--severity-moderate)}.likelihood-low{background:#22c55e26;color:var(--severity-minor)}.likelihood-very-low{background:#a1a1aa26;color:var(--text-muted)}.grid-2,.grid-3{display:grid;grid-template-columns:1fr;gap:1rem}.grid-4{display:grid;grid-template-columns:1fr 1fr;gap:.75rem}@media (min-width: 640px){.grid-2,.grid-3{grid-template-columns:1fr 1fr}.grid-4{grid-template-columns:1fr 1fr 1fr}.container{padding:0 1.5rem}}@media (min-width: 960px){.grid-3{grid-template-columns:1fr 1fr 1fr}.grid-4{grid-template-columns:1fr 1fr 1fr 1fr}}.breadcrumbs{font-size:.85rem;color:var(--text-dim);margin-bottom:1.5rem;display:flex;flex-wrap:wrap;gap:.35rem;align-items:center}.breadcrumbs a{color:var(--text-muted)}.breadcrumbs a:hover{color:var(--accent-hover)}.breadcrumbs span{color:var(--text-dim)}.section{margin-bottom:2.5rem}.section-title{font-size:1.1rem;font-weight:700;color:var(--text-primary);margin-bottom:1rem;padding-bottom:.5rem;border-bottom:1px solid var(--border)}.causes-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:.6rem}.cause-item{display:flex;justify-content:space-between;align-items:flex-start;gap:.75rem;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);padding:.75rem 1rem}.cause-text{flex:1;font-size:.95rem}.diagnostic-steps{list-style:none;padding:0;margin:0;counter-reset:step-counter;display:flex;flex-direction:column;gap:.75rem}.diagnostic-step{counter-increment:step-counter;display:flex;gap:1rem;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:1rem}.diagnostic-step:before{content:counter(step-counter);min-width:2rem;height:2rem;background:var(--accent);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.85rem;flex-shrink:0}.diagnostic-step p{margin:0;font-size:.95rem;line-height:1.6}.faq-list{display:flex;flex-direction:column;gap:.5rem}.faq-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}.faq-question{padding:1rem 1.25rem;font-weight:600;font-size:.95rem;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:1rem;list-style:none}.faq-question::-webkit-details-marker{display:none}.faq-question:after{content:"+";font-size:1.3rem;font-weight:400;color:var(--text-muted);flex-shrink:0;transition:transform .2s ease}details[open] .faq-question:after{content:"-"}.faq-answer{padding:.75rem 1.25rem 1rem;font-size:.9rem;color:var(--text-muted);border-top:1px solid var(--border)}.faq-answer p{margin:0;color:var(--text-muted)}.cost-box{background:var(--bg-card);border:1px solid var(--border);border-left:3px solid var(--accent);border-radius:var(--radius);padding:1rem 1.25rem;font-size:.95rem}.cost-box strong{color:var(--accent-hover)}.related-codes-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(90px,1fr));gap:.5rem}.related-code-link{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);padding:.5rem .75rem;text-align:center;font-family:var(--font-mono);font-size:.85rem;font-weight:600;color:var(--accent-hover);text-decoration:none;transition:background .15s ease,border-color .15s ease;display:block}.related-code-link:hover{background:var(--bg-hover);border-color:var(--accent);text-decoration:none}.symptoms-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:.4rem}.symptom-item{display:flex;align-items:flex-start;gap:.6rem;font-size:.95rem;padding:.4rem 0}.symptom-item:before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent-hover);margin-top:.55em;flex-shrink:0}.vehicles-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:.4rem}.vehicle-item{font-size:.9rem;color:var(--text-muted);padding:.35rem 0;border-bottom:1px solid var(--border)}.vehicle-item:last-child{border-bottom:none}table{width:100%;border-collapse:collapse;font-size:.9rem;margin-bottom:1rem}th{background:var(--bg-card);color:var(--text-muted);font-weight:600;text-align:left;padding:.6rem .75rem;border-bottom:2px solid var(--border)}td{padding:.6rem .75rem;border-bottom:1px solid var(--border);vertical-align:top}tr:last-child td{border-bottom:none}.ad-slot{background:var(--bg-card);border:1px dashed var(--border);border-radius:var(--radius);min-height:90px;display:flex;align-items:center;justify-content:center;color:var(--text-dim);font-size:.75rem;letter-spacing:.05em;text-transform:uppercase;margin:1.5rem 0}.ad-slot-leaderboard{min-height:90px}.ad-slot-rectangle{min-height:250px}.ad-slot-inline{min-height:100px}.hero{padding:3rem 0 2rem;text-align:center}.hero h1{margin-bottom:.75rem}.hero p{color:var(--text-muted);font-size:1.1rem;max-width:540px;margin:0 auto 2rem}.search-container{max-width:480px;margin:0 auto 1rem;position:relative}.search-input{width:100%;background:var(--bg-card);border:2px solid var(--border);border-radius:var(--radius);color:var(--text-primary);font-family:var(--font);font-size:1rem;padding:.85rem 1rem .85rem 3rem;transition:border-color .15s ease;-webkit-appearance:none}.search-input::placeholder{color:var(--text-dim)}.search-input:focus{outline:none;border-color:var(--accent)}.search-icon{position:absolute;left:1rem;top:50%;transform:translateY(-50%);color:var(--text-dim);pointer-events:none}#search-results{position:absolute;top:calc(100% + 4px);left:0;right:0;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);z-index:200;max-height:320px;overflow-y:auto;box-shadow:0 4px 24px #00000080}.search-result-item{display:flex;align-items:center;gap:.75rem;padding:.75rem 1rem;border-bottom:1px solid var(--border);text-decoration:none;color:var(--text-primary);transition:background .1s ease}.search-result-item:last-child{border-bottom:none}.search-result-item:hover{background:var(--bg-hover);text-decoration:none}.search-result-code{font-family:var(--font-mono);font-weight:700;color:var(--accent-hover);min-width:60px}.search-result-desc{font-size:.875rem;color:var(--text-muted)}.category-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem;text-align:center;text-decoration:none;color:var(--text-primary);transition:border-color .15s ease,transform .1s ease;display:block}.category-card:hover{border-color:var(--accent);transform:translateY(-2px);text-decoration:none;color:var(--text-primary)}.category-icon{font-size:2rem;margin-bottom:.5rem;display:block}.category-name{font-weight:700;font-size:1rem;margin-bottom:.25rem}.category-count{font-size:.8rem;color:var(--text-dim)}.page-content{padding:2rem 0 3rem}.section+.section{margin-top:2.5rem}.code-header{padding:1.5rem 0;border-bottom:1px solid var(--border);margin-bottom:2rem}.code-title-row{display:flex;flex-wrap:wrap;align-items:center;gap:.75rem;margin-bottom:.5rem}.code-number{font-family:var(--font-mono);font-size:clamp(1.6rem,4vw,2.4rem);font-weight:800;color:var(--accent-hover)}.code-description{color:var(--text-muted);font-size:1rem;margin:0}.text-muted{color:var(--text-muted)}.text-dim{color:var(--text-dim)}.text-accent{color:var(--accent-hover)}.font-mono{font-family:var(--font-mono)}.font-bold{font-weight:700}.mt-1{margin-top:.5rem}.mt-2{margin-top:1rem}.mt-3{margin-top:1.5rem}.mb-1{margin-bottom:.5rem}.mb-2{margin-bottom:1rem}.mb-3{margin-bottom:1.5rem}.hidden{display:none}