:root{--ink: #1C1E22;--paper: #F7F5F1;--amber: #D4A017;--steel: #2B4C5C;--steel-light: #4A6B7C;--line: #D8D3C8;--gray: #6A6A6A;--gray-dark: #4A4A4A;--font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--mono: "IBM Plex Mono", "SF Mono", Consolas, monospace;--maxw: 1100px}*{margin:0;padding:0;box-sizing:border-box}body{background:var(--paper);color:var(--ink);font-family:var(--font);line-height:1.5;-webkit-font-smoothing:antialiased}img{max-width:100%;height:auto}a{color:var(--steel);text-decoration:none}a:hover{text-decoration:underline}.mono{font-family:var(--mono)}.container{max-width:var(--maxw);margin:0 auto;padding:0 32px}.site-header{border-bottom:2px solid var(--ink);padding:20px 32px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px;background:var(--paper)}.logo{font-weight:800;font-size:20px;letter-spacing:-.02em;display:flex;align-items:center;gap:8px;color:var(--ink)}.logo:hover{text-decoration:none}.logo-mark{width:28px;height:28px;background:var(--amber);border:2px solid var(--ink);display:flex;align-items:center;justify-content:center;font-family:var(--mono);font-weight:700;font-size:13px;flex-shrink:0}.nav{display:flex;gap:28px;align-items:center}.nav a{color:var(--ink);font-size:15px;font-weight:500}.nav a:hover{color:var(--steel);text-decoration:none}.nav a.active{color:var(--steel);font-weight:600}.lookup-box{display:flex;border:2px solid var(--ink)}.lookup-box input{border:none;background:#fff;padding:10px 14px;font-family:var(--mono);font-size:14px;width:160px;outline:none;color:var(--ink)}.lookup-box button{background:var(--ink);color:var(--paper);border:none;padding:10px 16px;font-weight:600;font-size:14px;cursor:pointer;font-family:var(--font)}.lookup-box button:hover{background:var(--steel)}.breadcrumb{max-width:var(--maxw);margin:0 auto;padding:20px 32px 0;font-size:14px;color:#7a7a7a}.breadcrumb a{color:var(--steel)}.breadcrumb a:hover{text-decoration:underline}.hero{padding:64px 32px 8px;max-width:800px;margin:0 auto}.hero-intro h1{font-size:42px;font-weight:800;letter-spacing:-.02em;line-height:1.15}.hero-intro p{margin-top:20px;font-size:18px;line-height:1.6;color:var(--gray-dark)}.appliance-select{max-width:1100px}.appliance-grid{display:flex;flex-wrap:wrap;gap:1px;background:var(--ink);border:2px solid var(--ink);margin-top:8px}.appliance-tile{background:var(--paper);padding:26px 24px;flex:1 1 calc(25% - 1px);min-width:220px;box-sizing:border-box;color:var(--ink);transition:background .15s ease}.appliance-tile:hover{background:#d4a01724;text-decoration:none}.appliance-tag{color:var(--steel);font-size:13px;font-weight:700;margin-bottom:10px;font-family:var(--mono)}.appliance-tile h3{font-size:19px;font-weight:700;margin-bottom:6px}.appliance-tile p{font-size:13.5px;color:var(--gray);line-height:1.4}.symptom-grid{display:flex;flex-wrap:wrap;gap:1px;background:var(--ink);border:2px solid var(--ink);margin-top:8px}.symptom-card{background:var(--paper);padding:24px;flex:1 1 calc(33.333% - 1px);min-width:260px;box-sizing:border-box}.symptom-card .tag{font-family:var(--mono);font-size:11px;color:var(--steel);font-weight:700;margin-bottom:10px}.symptom-card h3{font-size:17px;font-weight:700;line-height:1.3;margin-bottom:8px}.symptom-card p{font-size:14px;color:#5a5a5a;margin-bottom:14px}.symptom-card a{font-size:14px;font-weight:700;color:var(--ink);border-bottom:2px solid var(--amber)}.symptom-card a:hover{text-decoration:none;background:#d4a01724}.why-strip{background:var(--steel);color:var(--paper);margin-top:40px}.why-grid{display:flex;flex-wrap:wrap;gap:40px;max-width:1100px;margin:0 auto;padding:56px 32px}.why-item{flex:1 1 260px}.why-item .mark{font-family:var(--mono);color:var(--amber);font-size:13px;font-weight:700;margin-bottom:10px}.why-item h3{font-size:18px;margin-bottom:8px}.why-item p{font-size:14px;color:#c9d6db}.section{max-width:var(--maxw);margin:0 auto;padding:8px 32px 48px}.section-head{display:flex;justify-content:space-between;align-items:baseline;border-bottom:2px solid var(--ink);padding-bottom:14px;margin-bottom:4px}.section-head h2{font-size:22px;font-weight:800;letter-spacing:-.01em}.section-head .sub{color:var(--gray);font-size:14px}.article-list{border-top:1px solid var(--line);margin-top:8px}.article-row{display:flex;gap:24px;padding:22px 4px;border-bottom:1px solid var(--line);color:var(--ink);align-items:baseline}.article-row:hover{background:#d4a01714;text-decoration:none}.article-tag{font-family:var(--mono);font-size:12px;font-weight:700;color:var(--steel);width:110px;flex-shrink:0;padding-top:3px}.article-body h3{font-size:17px;font-weight:700;margin-bottom:4px;color:var(--ink)}.article-body p{font-size:14px;color:var(--gray)}.index-table{width:100%;border-collapse:collapse;margin-top:8px}.index-table tr{border-bottom:1px solid var(--line)}.index-table tr:hover{background:#d4a01714}.index-table td{padding:16px 4px;vertical-align:top}.brand-cell{width:160px;font-weight:700;font-size:16px;padding-top:18px}.codes-cell{display:flex;flex-wrap:wrap;gap:8px}.code-pill{font-family:var(--mono);font-size:13px;font-weight:600;background:#fff;border:1.5px solid var(--ink);padding:5px 10px;color:var(--ink);display:inline-block}.code-pill:hover{background:var(--steel);color:var(--paper);border-color:var(--steel);text-decoration:none}.article-wrap{max-width:760px;margin:0 auto;padding:32px 20px 80px}.crumbs{font-size:14px;color:#7a7a7a;margin-bottom:20px}.crumbs a{color:var(--steel)}.article-wrap h1{font-size:clamp(28px,4.5vw,38px);letter-spacing:-.02em;line-height:1.2;margin-bottom:12px}.article-lede{font-size:18px;color:var(--gray-dark);margin-bottom:8px}.article-date{font-size:13px;color:var(--gray);margin-bottom:28px;font-family:var(--mono)}.prose{font-size:17px}.prose h2{font-size:24px;margin:36px 0 14px;letter-spacing:-.01em;font-weight:800}.prose h3{font-size:18px;margin:26px 0 10px;font-weight:700}.prose p{margin:14px 0}.prose ul,.prose ol{margin:14px 0;padding-left:26px}.prose li{margin:7px 0}.prose code,.prose .mono{font-family:var(--mono);background:#fff;border:1px solid var(--line);border-radius:3px;padding:1px 6px;font-size:.92em}.prose hr{border:none;border-top:2px solid var(--ink);margin:32px 0}.prose strong{font-weight:700}.prose a{color:var(--steel);text-decoration:underline}.affiliate-note{background:#fff;border:1.5px solid var(--amber);padding:14px 18px;font-size:13.5px;color:#5a4a1e;margin:30px 0}.disclaimer{background:#fff;border:1.5px solid var(--line);padding:14px 18px;font-size:13.5px;color:var(--gray-dark);margin:30px 0}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}.card{background:#fff;border:2px solid var(--ink);padding:22px;display:flex;flex-direction:column;gap:10px;color:var(--ink)}.card:hover{background:#d4a01714;text-decoration:none}.card .tag{font-family:var(--mono);font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.4px;color:var(--steel)}.card h3{font-size:17px;line-height:1.35;color:var(--ink)}.card p{font-size:14px;color:var(--gray);flex:1}.card .meta{font-family:var(--mono);font-size:12px;color:var(--steel)}.site-footer{padding:32px;text-align:center;font-size:13px;color:#8a8a8a;border-top:1px solid var(--line);margin-top:40px}.site-footer a{color:var(--gray);margin:0 10px}.site-footer a:hover{color:var(--steel)}@media(max-width:800px){.container{padding:0 20px}.site-header{padding:16px 20px}.nav{display:none}.lookup-box input{width:110px}.article-row{flex-direction:column;gap:6px}.article-tag{width:auto}.cat-hero h1,.hero h1{font-size:28px}.section{padding:8px 20px 40px}.cat-hero,.hero{padding:16px 20px 32px}}