:root{--primary:#1a56db;--primary-dark:#1447b8;--primary-light:#eef3fe;--border:#e2e8f0;--bg:#fff;--bg-soft:#f8fafc;--radius:10px;--text:#0f172a;--text-muted:#64748b;--success:#059669;--warning:#d97706}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}img{max-width:100%}.container{max-width:1200px;margin:0 auto;padding:0 20px}.page-section{padding:48px 0}.section-title{font-size:24px;font-weight:700;margin-bottom:8px}.section-subtitle{color:var(--text-muted);font-size:15px;margin-bottom:28px}.site-header{background:var(--bg);border-bottom:1px solid var(--border);position:-webkit-sticky;position:sticky;top:0;z-index:100}.header-inner{display:flex;align-items:center;gap:24px;height:64px}.logo{font-size:22px;font-weight:800;letter-spacing:-.5px;white-space:nowrap}.logo span{color:var(--primary)}.header-search{flex:1 1;max-width:520px;display:flex}.header-search input{flex:1 1;height:40px;padding:0 14px;border:1px solid var(--border);border-right:none;border-radius:var(--radius) 0 0 var(--radius);font-size:14px;outline:none;background:var(--bg-soft)}.header-search input:focus{border-color:var(--primary);background:var(--bg)}.header-search button{height:40px;padding:0 18px;border:none;border-radius:0 var(--radius) var(--radius) 0;background:var(--primary);color:#fff;font-size:14px;font-weight:600;cursor:pointer}.header-search button:hover{background:var(--primary-dark)}.nav-links{display:flex;align-items:center;gap:22px;margin-left:auto;font-size:14px;font-weight:500}.nav-links a:hover{color:var(--primary)}.nav-links .nav-cta{background:var(--primary);color:#fff;padding:8px 16px;border-radius:var(--radius);font-weight:600}.nav-links .nav-cta:hover{background:var(--primary-dark);color:#fff}.btn{display:inline-block;padding:12px 28px;border-radius:var(--radius);font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;transition:all .15s ease}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark)}.btn-outline{background:transparent;color:var(--primary);border-color:var(--primary)}.btn-outline:hover{background:var(--primary-light)}.hero{background:linear-gradient(180deg,var(--primary-light) 0,var(--bg) 100%);border-bottom:1px solid var(--border);padding:72px 0 64px;text-align:center}.hero h1{font-size:40px;font-weight:800;letter-spacing:-1px;margin-bottom:12px}.hero p{color:var(--text-muted);font-size:17px;margin-bottom:32px}.hero-search{display:flex;max-width:680px;margin:0 auto 20px;box-shadow:0 4px 20px rgba(26,86,219,.12);border-radius:var(--radius)}.hero-search input{flex:1 1;height:56px;padding:0 20px;font-size:16px;border:1px solid var(--border);border-right:none;border-radius:var(--radius) 0 0 var(--radius);outline:none}.hero-search input:focus{border-color:var(--primary)}.hero-search button{height:56px;padding:0 36px;font-size:16px;border:none;border-radius:0 var(--radius) var(--radius) 0;background:var(--primary);color:#fff;font-weight:700;cursor:pointer}.hero-search button:hover{background:var(--primary-dark)}.hero-tags{color:var(--text-muted);font-size:13px}.hero-tags a{color:var(--primary);margin:0 4px}.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));grid-gap:20px;gap:20px}.card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:28px}.card h3{font-size:17px;margin-bottom:8px}.card p{color:var(--text-muted);font-size:14px}.card-icon{width:44px;height:44px;border-radius:var(--radius);background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:20px;margin-bottom:16px}.brand-chips{display:flex;flex-wrap:wrap;gap:10px}.brand-chip{display:inline-block;padding:8px 18px;border:1px solid var(--border);border-radius:999px;font-size:14px;font-weight:500;background:var(--bg-soft);transition:all .15s ease}.brand-chip:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-light)}.table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg)}.data-table{width:100%;border-collapse:collapse;font-size:14px;min-width:720px}.data-table th{text-align:left;background:var(--bg-soft);color:var(--text-muted);font-weight:600;font-size:13px;text-transform:uppercase;letter-spacing:.3px;white-space:nowrap}.data-table td,.data-table th{padding:12px 16px;border-bottom:1px solid var(--border)}.data-table td{vertical-align:middle}.data-table tbody tr:last-child td{border-bottom:none}.data-table tbody tr:hover{background:var(--bg-soft)}.pn-link{color:var(--primary);font-weight:600;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px}.pn-link:hover{text-decoration:underline}.price{font-weight:700;color:var(--text)}.price,.qty{white-space:nowrap}.badge,.qty{font-weight:600}.badge{display:inline-block;padding:2px 10px;border-radius:999px;font-size:12px}.badge-green{background:#ecfdf5;color:var(--success)}.badge-blue{background:var(--primary-light);color:var(--primary)}.badge-gray{background:var(--bg-soft);color:var(--text-muted);border:1px solid var(--border)}.detail-header{background:var(--bg-soft);border-bottom:1px solid var(--border);padding:36px 0}.breadcrumb{font-size:13px;color:var(--text-muted);margin-bottom:14px}.breadcrumb a{color:var(--primary)}.breadcrumb a:hover{text-decoration:underline}.spec-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));grid-gap:16px;gap:16px;margin-top:20px}.spec-item{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:12px 16px}.spec-item .spec-label{font-size:12px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.4px}.spec-item .spec-value{font-size:15px;font-weight:600;word-break:break-all}.part-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));grid-gap:16px;gap:16px}.part-card{border:1px solid var(--border);border-radius:var(--radius);padding:18px 20px;background:var(--bg);transition:all .15s ease}.part-card:hover{border-color:var(--primary);box-shadow:0 2px 12px rgba(26,86,219,.08)}.part-card .pc-pn{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:14px;font-weight:700;color:var(--primary);word-break:break-all}.part-card .pc-meta{font-size:13px;color:var(--text-muted);margin-top:6px}.form-card{max-width:640px;margin:0 auto;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:36px}.form-group{margin-bottom:20px}.form-label{display:block;font-size:14px;font-weight:600;margin-bottom:6px}.form-input{width:100%;height:44px;padding:0 14px;border:1px solid var(--border);border-radius:var(--radius);font-size:14px;outline:none;background:var(--bg)}.form-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(26,86,219,.1)}textarea.form-input{height:auto;padding:12px 14px;resize:vertical}.form-row{display:grid;grid-template-columns:1fr 1fr;grid-gap:16px;gap:16px}.success-box{background:#ecfdf5;border:1px solid #a7f3d0;color:var(--success);border-radius:var(--radius);padding:20px 24px;font-weight:600;text-align:center}.empty-state{text-align:center;padding:64px 20px;border:1px dashed var(--border);border-radius:var(--radius);background:var(--bg-soft)}.empty-state h3{font-size:18px;margin-bottom:8px}.empty-state p{color:var(--text-muted);font-size:14px}.site-footer{border-top:1px solid var(--border);background:var(--bg-soft);margin-top:64px;padding:40px 0 28px}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;grid-gap:32px;gap:32px;margin-bottom:28px}.footer-col h4{font-size:14px;font-weight:700;margin-bottom:12px}.footer-col a,.footer-col p{font-size:13px;color:var(--text-muted);display:block;margin-bottom:6px}.footer-col a:hover{color:var(--primary)}.footer-keywords{line-height:1.8;border-top:1px solid var(--border);padding-top:20px}.footer-bottom,.footer-keywords{font-size:12px;color:var(--text-muted)}.footer-bottom{margin-top:12px}.page-container{max-width:960px;margin:0 auto;padding:24px 16px}.page-subtitle{color:#6b7280;font-size:14px;margin-bottom:20px}.back-link{color:var(--primary);text-decoration:none;font-size:14px}.back-link:hover{text-decoration:underline}.error-box{background:#fef2f2;border:1px solid #fecaca;color:#b91c1c;padding:10px 14px;border-radius:6px;margin-bottom:12px;font-size:14px}.btn-danger{background:#dc2626;color:#fff;border:none;padding:6px 12px;border-radius:4px;cursor:pointer;font-size:14px}.btn-danger:hover{background:#b91c1c}.related-parts{margin-top:32px}.part-card-pn{font-weight:600;font-size:14px;color:var(--text);word-break:break-all}.part-card-meta{font-size:12px;color:var(--text-muted)}@media (max-width:768px){.header-inner{flex-wrap:wrap;height:auto;padding:12px 0}.header-search{order:3;max-width:100%;width:100%}.hero h1{font-size:28px}.footer-grid,.form-row{grid-template-columns:1fr}}