:root{--brand-primary: #111827;--brand-accent: #f59e0b;--brand-surface: #ffffff;--sf-bg: #f5f5f4;--sf-text: #1f2937;--sf-muted: #6b7280;--sf-border: #e5e7eb;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;color:var(--sf-text)}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:var(--sf-bg)}#root{min-height:100vh}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.sf-container{width:min(1120px,100%);margin:0 auto;padding:0 20px}.sf-shell{min-height:100vh;display:flex;flex-direction:column}.sf-main{flex:1;padding-top:28px;padding-bottom:48px}.sf-header{background:var(--brand-primary);color:#fff;position:sticky;top:0;z-index:10}.sf-header__inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px}.sf-brand__name{font-size:1.25rem;font-weight:700;letter-spacing:-.01em}.sf-brand__logo{height:40px;width:auto}.sf-nav{display:flex;gap:20px}.sf-nav__link{color:#ffffffd1;font-size:.95rem;padding:6px 2px;border-bottom:2px solid transparent}.sf-nav__link:hover,.sf-nav__link.active{color:#fff;border-bottom-color:var(--brand-accent)}.sf-hero{padding:36px 0 20px}.sf-hero__title{margin:0;font-size:clamp(1.9rem,5vw,2.8rem);color:var(--brand-primary)}.sf-hero__subtitle{margin:8px 0 0;color:var(--sf-muted);text-transform:capitalize}.sf-section__title{font-size:1.4rem;margin:24px 0 16px}.sf-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:20px}.sf-card{background:var(--brand-surface);border:1px solid var(--sf-border);border-radius:14px;overflow:hidden;transition:box-shadow .15s ease,transform .15s ease;display:flex;flex-direction:column}.sf-card:hover{box-shadow:0 12px 30px #1118271f;transform:translateY(-2px)}.sf-card__media{aspect-ratio:4 / 3;background:#f3f4f6;display:grid;place-items:center;overflow:hidden}.sf-card__media img{width:100%;height:100%;object-fit:cover}.sf-card__placeholder{font-size:2.4rem;font-weight:700;color:var(--brand-accent)}.sf-card__placeholder--lg{font-size:5rem}.sf-card__body{padding:14px 16px 18px}.sf-card__title{margin:0 0 8px;font-size:1rem;font-weight:600}.sf-card__price{margin:0;font-weight:700;color:var(--brand-primary)}.sf-card__from{font-weight:400;color:var(--sf-muted);font-size:.85rem}.sf-card__price--muted{color:var(--sf-muted);font-weight:500}.sf-chips{display:flex;flex-wrap:wrap;gap:10px;margin:8px 0 24px}.sf-chip{border:1px solid var(--sf-border);background:#fff;color:var(--sf-text);padding:8px 14px;border-radius:999px;font-size:.9rem;cursor:pointer}.sf-chip--active{background:var(--brand-primary);color:#fff;border-color:var(--brand-primary)}.sf-breadcrumb{color:var(--sf-muted);font-size:.9rem;margin-bottom:16px}.sf-detail__grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:32px}.sf-detail__media{background:#f3f4f6;border-radius:16px;aspect-ratio:1 / 1;display:grid;place-items:center;overflow:hidden}.sf-detail__media img{width:100%;height:100%;object-fit:cover}.sf-detail__title{margin:0 0 6px;font-size:1.8rem;color:var(--brand-primary)}.sf-detail__category{margin:0 0 16px;color:var(--sf-muted)}.sf-detail__price{font-size:1.6rem;font-weight:700;margin:0 0 16px}.sf-detail__stock{color:var(--sf-muted);margin:12px 0}.sf-detail__desc{line-height:1.7;margin-top:16px}.sf-variants__label{display:block;font-size:.85rem;color:var(--sf-muted);margin-bottom:8px}.sf-state{text-align:center;padding:48px 20px;color:var(--sf-muted)}.sf-state__title{color:var(--sf-text);margin:0 0 8px;font-size:1.2rem}.sf-state--error .sf-state__title{color:#b91c1c}.sf-state__desc{margin:0}.sf-spinner{display:inline-block;width:32px;height:32px;border:3px solid var(--sf-border);border-top-color:var(--brand-primary);border-radius:50%;animation:sf-spin .8s linear infinite;margin-bottom:14px}@keyframes sf-spin{to{transform:rotate(360deg)}}.sf-button{margin-top:16px;border:none;background:var(--brand-primary);color:#fff;padding:10px 18px;border-radius:10px;cursor:pointer;font-size:.95rem}.sf-standalone{min-height:100vh;display:grid;place-items:center;padding:24px}.sf-standalone__box{width:min(560px,100%);background:#fff;border:1px solid var(--sf-border);border-radius:20px;padding:40px 32px;text-align:center;box-shadow:0 20px 60px #1118271a}.sf-eyebrow{margin:0 0 12px;font-size:.75rem;letter-spacing:.16em;text-transform:uppercase;color:var(--brand-accent)}.sf-standalone__title{margin:0 0 12px;font-size:1.8rem}.sf-standalone__desc{margin:0;color:var(--sf-muted);line-height:1.7}.sf-footer{background:#111827;color:#ffffffbf;padding:24px 0;font-size:.9rem}.sf-footer__inner{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}.sf-footer__contact{display:flex;gap:18px;flex-wrap:wrap}@media (max-width: 720px){.sf-detail__grid{grid-template-columns:1fr}}