:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#152033;background:#f6f8fb;line-height:1.5}*{box-sizing:border-box}body{margin:0}a{color:inherit}.shell{max-width:1120px;margin:auto;padding:0 20px}.topbar{background:#0f2a43;color:white}.nav{min-height:70px;display:flex;gap:18px;align-items:center}.brand{font-size:1.35rem;font-weight:800;text-decoration:none;margin-right:auto}.nav a{text-decoration:none}.pill,.button,button{border:0;border-radius:999px;padding:10px 16px;font-weight:700;cursor:pointer}.button,button{background:#163b5c;color:#fff;text-decoration:none;display:inline-block}.button.secondary,button.secondary{background:#e8eef5;color:#163b5c}.hero{padding:72px 0 42px;background:linear-gradient(135deg,#e9f3ff,#fff5ea)}.hero h1{font-size:clamp(2.2rem,6vw,4.8rem);line-height:1.02;max-width:850px;margin:0}.hero p{font-size:1.12rem;max-width:680px;color:#42536a}.section{padding:42px 0}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px}.card{background:#fff;border:1px solid #dfe6ee;border-radius:18px;padding:18px;box-shadow:0 8px 30px rgba(15,42,67,.06)}.card img,.product-media img{width:100%;aspect-ratio:1/1;object-fit:contain;background:#f2f5f8;border-radius:14px}.price{font-weight:800;font-size:1.15rem}.muted{color:#66778c}.status{padding:6px 10px;background:#edf3f8;border-radius:999px;display:inline-block;font-size:.85rem}.product-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(300px,.85fr);gap:36px;align-items:start}.stack{display:grid;gap:14px}.form-row{display:grid;gap:6px}input,select,textarea{width:100%;padding:12px;border:1px solid #cfd9e4;border-radius:10px;background:#fff;font:inherit}.notice{padding:12px 14px;border-radius:12px;background:#fff6d8;border:1px solid #ead590}.ok{background:#e7f7ee;border-color:#b7dfc7}.error{background:#ffe9e9;border-color:#e7bcbc}.line{display:flex;justify-content:space-between;gap:18px;padding:8px 0;border-bottom:1px solid #edf1f5}.footer{padding:40px 0;color:#66778c}.hidden{display:none!important}pre{white-space:pre-wrap;word-break:break-word}.admin-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:12px}.metric{font-size:1.8rem;font-weight:800}@media(max-width:760px){.nav{flex-wrap:wrap;padding:14px 0}.product-layout{grid-template-columns:1fr}.hero{padding-top:48px}}

/* Phase BN mobile/failure resilience */
:focus-visible{outline:3px solid currentColor;outline-offset:3px}button:disabled,.button[aria-disabled="true"]{opacity:.58;cursor:not-allowed}button,input,select,textarea,.button{min-height:44px}.line{align-items:flex-start;flex-wrap:wrap}.card{overflow-wrap:anywhere}.notice[role="alert"],.error[role="alert"]{scroll-margin-top:20px}@media(max-width:520px){.shell{padding:0 14px}.section{padding:28px 0}.card{padding:15px;border-radius:14px}.nav{gap:12px}.nav .brand{width:100%}.line>label{flex:1 1 100%}.line>div{min-width:0}.button,button{max-width:100%;white-space:normal}.hero h1{font-size:clamp(2rem,12vw,3.1rem)}}@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation-duration:.001ms!important;transition-duration:.001ms!important}}

/* Phase BS customer/admin operations UX */
.section-heading{display:flex;align-items:end;justify-content:space-between;gap:16px}.section-heading h2{margin-bottom:4px}.action-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:10px}.request-panel,.review-panel{border-top:1px solid #edf1f5;padding-top:14px}.request-history{display:grid;gap:8px}.request-row{padding:10px 12px;border-radius:10px;background:#f7f9fc}.ops-layout{display:grid;grid-template-columns:minmax(280px,.8fr) minmax(360px,1.2fr);gap:18px;align-items:start}.ops-item{width:100%;text-align:left;border-radius:12px;background:#f4f7fa;color:#152033}.ops-item.active{outline:3px solid #163b5c}.danger{background:#8a2631!important}.field-help{font-size:.88rem;color:#66778c}.compact{padding:8px 11px;min-height:40px}.detail-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:10px}.kv{background:#f7f9fc;border-radius:10px;padding:10px}.kv strong{display:block;font-size:.82rem;color:#66778c}.dialog-actions{display:flex;flex-wrap:wrap;gap:10px}.success-text{color:#17633a}@media(max-width:820px){.ops-layout{grid-template-columns:1fr}}

/* Phase BS customer/admin operations UX */
.section-heading{display:flex;align-items:end;justify-content:space-between;gap:16px}.section-heading h2{margin-bottom:4px}.action-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:10px}.request-panel,.review-panel{border-top:1px solid #edf1f5;padding-top:14px}.request-history{display:grid;gap:8px}.request-row{padding:10px 12px;border-radius:10px;background:#f7f9fc}.ops-layout{display:grid;grid-template-columns:minmax(280px,.8fr) minmax(360px,1.2fr);gap:18px;align-items:start}.ops-item{width:100%;text-align:left;border-radius:12px;background:#f4f7fa;color:#152033}.ops-item.active{outline:3px solid #163b5c}.danger{background:#8a2631!important}.compact{padding:8px 11px;min-height:40px}.detail-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:10px}.kv{background:#f7f9fc;border-radius:10px;padding:10px}.kv strong{display:block;font-size:.82rem;color:#66778c}.dialog-actions{display:flex;flex-wrap:wrap;gap:10px}@media(max-width:820px){.ops-layout{grid-template-columns:1fr}}

/* Phase BT storefront production polish */
.collection-chips{display:flex;flex-wrap:wrap;gap:10px}.chip{display:inline-flex;align-items:center;min-height:44px;padding:8px 14px;border:1px solid #ccd8e4;border-radius:999px;background:#fff;text-decoration:none;font-weight:700}.chip:hover{background:#edf3f8}.product-card a{text-decoration:none}.product-card h3{margin-bottom:6px}.product-card img{transition:transform .18s ease}.product-card:hover img{transform:scale(1.015)}.product-media{position:sticky;top:18px}@media(max-width:760px){.product-media{position:static}.collection-chips{gap:8px}.chip{flex:1 1 auto;justify-content:center}}@media(prefers-reduced-motion:reduce){.product-card img{transition:none}.product-card:hover img{transform:none}}