.pc-parts-page{--bg:#ffffff;--text:#222;--muted:#666;--border:#e5e7eb;--brand:#2563eb;--brand-weak:#eef2ff;--surface:#f8fafc;--focus:#1d4ed8}.container{max-width:1080px;margin:0 auto;padding:0 16px}.hero-banner{margin:28px 0 40px;padding:clamp(14px,2.5vw,22px);background:linear-gradient(135deg,#f3f6ff,#ffffff);border:1px solid rgba(37,99,235,.16);color:#0f172a;box-shadow:0 10px 28px rgba(15,23,42,.08)}.hero-banner__inner{display:grid;grid-template-columns:minmax(0,1fr) clamp(120px,16vw,180px);gap:clamp(12px,2vw,20px);align-items:center}.hero-banner__content{display:grid;gap:16px}.hero-banner__visual{position:relative;width:100%;aspect-ratio:1/1;opacity:.95}.hero-banner__label{margin:0 0 8px;font-size:.8rem;letter-spacing:.18em;text-transform:uppercase;color:#2563eb;font-weight:600}.hero-banner__title{margin:0 0 12px;font-size:clamp(1.8rem,3.5vw,2.3rem);line-height:1.35;max-width:none;white-space:normal;overflow-wrap:anywhere;font-weight:700}.hero-banner__lead{margin:0 0 16px;color:#475569;font-size:.95rem;max-width:none}.hero-banner__actions{display:flex;flex-wrap:wrap;gap:10px}.hero-banner__cta{display:inline-flex;align-items:center;gap:8px;padding:12px 20px;border-radius:999px;background:#2563eb;color:#fff;font-weight:600;text-decoration:none;box-shadow:0 10px 20px rgba(37,99,235,.2)}.hero-banner__cta:hover{background:#1d4ed8}.hero-banner__link{display:inline-flex;align-items:center;gap:6px;color:#2563eb;font-weight:600;text-decoration:none}.hero-banner__link:after{content:"›";font-size:1.1rem}.hero-banner__link:hover{text-decoration:underline}.tabbed-section{margin:32px 0 96px;padding:32px;background:var(--surface);border:1px solid var(--border)}.tabbed-section__header{display:flex;flex-direction:column;gap:16px;margin-bottom:24px}.tabbed-section__title{margin:0;font-size:30px;font-weight:700}.tab-list{display:flex;width:100%;overflow:hidden;border:1px solid var(--border);background:#fff}.tab-button{flex:1 1 0;border:none;background:transparent;padding:10px;font-weight:700;font-size:1.05rem;letter-spacing:.08em;text-transform:uppercase;cursor:default;transition:background .2s,color .2s;text-align:center}.tab-button[aria-selected=true]{background:#e5e7eb}.tab-panel{display:none}.tab-panel.is-active{display:block}.category-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:16px}.category-card{display:flex;flex-direction:column;gap:12px;align-items:center;text-align:center;padding:18px;border-radius:18px;background:#fff;border:2px solid var(--border);text-decoration:none;color:inherit;box-shadow:0 16px 30px rgba(15,23,42,.05);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}.category-card:focus-visible,.category-card:hover{transform:translateY(-4px);box-shadow:0 26px 40px rgba(15,23,42,.1);border-color:var(--brand)}.category-card__image{width:100%;padding-top:100%;background:lightgray;position:relative;overflow:hidden}.category-card__image img{position:absolute;top:0;left:0;width:100%;height:100%;-o-object-fit:contain;object-fit:contain;padding:4px}.category-card__image:after{content:attr(data-badge);position:absolute;left:12px;bottom:12px;padding:6px 10px;background:rgba(37,99,235,.9);color:#fff;font-size:.78rem;font-weight:600}.category-card__label{margin:0;font-size:.98rem;font-weight:600}@media (max-width:1180px){.category-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}@media (max-width:900px){.category-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}@media (max-width:640px){.hero-banner{padding:14px}.hero-banner__inner{grid-template-columns:1fr}.hero-banner__visual{width:120px;justify-self:end}.hero-banner__title{font-size:2.2rem;line-height:1.3}.category-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.tabbed-section{padding:24px}.tabbed-section__header{flex-direction:column;align-items:flex-start}}.guide-divider{border:0;border-top:1px solid var(--border);margin:36px 0}.brand-section{margin-top:24px;margin-bottom:64px}.brand-section__title{margin:0 0 12px;font-size:30px;font-weight:700;letter-spacing:.02em}.brand-grid{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px}.brand-grid>li{min-width:0;display:flex;flex-direction:column;align-items:center;gap:6px}.brand-card{display:grid;place-items:center;text-align:center;padding:12px 10px;min-height:104px;border:1px solid var(--border);background:#fff;color:var(--text);text-decoration:none;font-weight:600;font-size:14px;box-shadow:0 6px 18px rgba(16,42,86,.04);width:100%;cursor:default}.brand-card:focus-visible,.brand-card:hover{transform:none;box-shadow:0 6px 18px rgba(16,42,86,.04);border-color:var(--border)}.brand-card__image{height:68px;width:100%;display:flex;align-items:center;justify-content:center}.brand-card__image img{width:100%;height:100%;max-width:100%;max-height:100%;-o-object-fit:contain;object-fit:contain;display:block}.brand-name{font-size:12px;color:var(--muted);line-height:1.2;text-align:center}@media (max-width:960px){.brand-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}@media (max-width:640px){.brand-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}.placeholder-card{margin:0 0 96px}.back-to-top{width:100vw;margin-left:calc(50% - 50vw);border:none;background:linear-gradient(135deg,#2563eb,#1d4ed8);color:#fff;font-size:.95rem;font-weight:700;letter-spacing:.3em;padding:20px 0;text-transform:uppercase;cursor:pointer;border-radius:0;box-shadow:0 12px 30px rgba(37,99,235,.3)}.back-to-top:hover{background:linear-gradient(135deg,#1d4ed8,#1e40af)}