:root{color-scheme:light;--bg:#f6f7fb;--card:#ffffff;--line:#e5e7eb;--text:#111827;--muted:#6b7280;--primary:#111827;--primary-contrast:#ffffff;--success:#065f46;--danger:#991b1b}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:Arial,Helvetica,sans-serif}a{color:inherit;text-decoration:none}button,input{font:inherit}img{display:block;max-width:100%}.page-shell{min-height:100vh}.topbar{position:-webkit-sticky;position:sticky;top:0;z-index:10;background:rgba(255,255,255,.92);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}.container,.topbar__inner{width:min(1120px,calc(100% - 32px));margin:0 auto}.topbar__inner{display:flex;align-items:center;justify-content:space-between;min-height:64px}.brand{font-weight:700;font-size:18px}.nav-links{display:flex;gap:16px;color:var(--muted);font-size:14px}.hero{padding:32px 0 12px}.hero__title{margin:0 0 8px;font-size:32px;line-height:1.2}.hero__desc{margin:0;color:var(--muted);line-height:1.6}.section{padding:20px 0 40px}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));grid-gap:16px;gap:16px}.grid--two-columns{grid-template-columns:repeat(2,minmax(0,1fr))}.grid--three-columns{grid-template-columns:repeat(3,minmax(0,1fr))}.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:16px;box-shadow:0 8px 20px rgba(17,24,39,.04)}.card h1,.card h2,.card h3,.card p{margin-top:0}.product-card__cover{border-radius:12px;border:1px dashed var(--line);background:#f9fafb;min-height:148px;display:flex;align-items:center;justify-content:center;color:var(--muted);margin-bottom:12px}.product-card__cover--media{min-height:180px;overflow:hidden}.product-card__image{width:100%;height:180px;object-fit:cover}.product-card__footer{align-items:center}.product-card__footer,.product-card__meta{display:flex;justify-content:space-between;gap:12px}.product-card__meta{align-items:flex-start}.price{font-weight:700}.price--hero{font-size:clamp(1.75rem,2vw,2.25rem);line-height:1.1}.muted{color:var(--muted)}.status-ok{color:var(--success)}.status-danger{color:var(--danger)}.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid var(--primary);border-radius:10px;padding:10px 14px;background:var(--primary);color:var(--primary-contrast);cursor:pointer;min-height:44px;font-weight:600}.button--secondary{background:#fff;color:var(--text);border-color:var(--line)}.button:disabled,.is-disabled{opacity:.5;cursor:not-allowed;pointer-events:none}.stack{display:grid;grid-gap:16px;gap:16px}.stack--lg{gap:24px}.detail-layout{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(320px,.9fr);grid-gap:20px;gap:20px}.detail-layout--balanced{grid-template-columns:minmax(0,1fr) minmax(360px,440px);align-items:start}.detail-cover{min-height:380px;background:#fff;border:1px dashed var(--line);border-radius:16px;display:flex;align-items:center;justify-content:center;color:var(--muted)}.detail-cover--placeholder{background:linear-gradient(135deg,#f9fafb,#eef2ff)}.detail-cover__image{width:100%;min-height:380px;max-height:520px;object-fit:cover;border-radius:16px;border:1px solid var(--line);background:#fff}.product-showcase{padding:0;overflow:hidden}.form-row{display:grid;grid-gap:8px;gap:8px}.input{width:100%;border:1px solid var(--line);border-radius:10px;padding:10px 12px;background:#fff}.summary-list{display:grid;grid-gap:10px;gap:10px}.summary-item{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}.summary-item strong{text-align:right;max-width:70%;word-break:break-word}.summary-panel{border:1px solid var(--line);border-radius:14px;padding:16px;background:#f9fafb}.notice{border-radius:12px;padding:12px 14px;border:1px solid var(--line);background:#fff}.notice--pending{background:#fffaf0}.notice--success{background:#f0fdf4}.notice--danger{background:#fef2f2}.footer-note{color:var(--muted);font-size:13px}.section-heading{display:flex;justify-content:space-between;gap:12px;align-items:flex-start;flex-wrap:wrap}.section-heading h2,.section-heading h3{margin-bottom:0}.eyebrow{margin:0;color:var(--muted);font-size:12px;letter-spacing:.08em;text-transform:uppercase}.status-chip{display:inline-flex;align-items:center;justify-content:center;min-height:32px;padding:6px 10px;border-radius:999px;border:1px solid var(--line);background:#fff;font-size:13px;font-weight:600;white-space:nowrap}.status-chip--success{color:var(--success);background:#f0fdf4;border-color:#bbf7d0}.status-chip--danger{color:var(--danger);background:#fef2f2;border-color:#fecaca}.status-chip--neutral{color:var(--muted);background:#f9fafb}.selection-card{display:flex;justify-content:space-between;gap:16px;align-items:center;padding:14px 16px;border:1px solid var(--line);border-radius:14px;background:#f9fafb}button.selection-card{width:100%;cursor:pointer}.selection-card--active{border-color:var(--primary);background:#fff}.option-list{display:grid;grid-gap:12px;gap:12px}.option-list--two-columns{grid-template-columns:repeat(2,minmax(0,1fr))}.quantity-panel{display:grid;grid-gap:12px;gap:12px}.quantity-stepper{display:inline-flex;align-items:center;gap:12px}.quantity-stepper .button{min-width:44px;padding-inline:0}.quantity-value{min-width:72px;min-height:44px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:12px;background:#fff;font-size:1.125rem;font-weight:700}.quantity-input{width:96px;text-align:center;font-weight:700}.action-row{display:flex;gap:12px;flex-wrap:wrap}.action-row--right{justify-content:flex-end}.action-row--center{justify-content:center}.order-header-card{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;align-items:flex-start}.section-card{padding:20px}.order-no-placeholder{font-size:1.125rem;font-weight:700}.payment-qrcode-placeholder{display:grid;justify-items:center;grid-gap:14px;gap:14px;text-align:center}.qrcode-section{text-align:center}.payment-qrcode-box{width:min(220px,100%);aspect-ratio:1;display:grid;place-items:center;border-radius:16px;border:1px dashed var(--line);background:linear-gradient(135deg,#ffffff,#f3f4f6);color:var(--muted);font-weight:700}.info-tile{border:1px solid var(--line);border-radius:14px;padding:16px;background:#f9fafb}.info-tile__value{margin-top:8px;font-weight:700}.checkout-confirm-layout{grid-template-columns:minmax(0,1.25fr) minmax(280px,360px);align-items:stretch}.checkout-confirm-info,.checkout-confirm-layout{display:grid;grid-gap:24px;gap:24px}.checkout-confirm-headline{display:grid;grid-template-columns:minmax(0,1fr) auto;grid-gap:20px;gap:20px;align-items:end;padding-bottom:20px;border-bottom:1px solid var(--line)}.checkout-confirm-title{font-size:clamp(1.75rem,3vw,2.5rem);line-height:1.2;word-break:break-word}.checkout-confirm-amount{font-size:clamp(2rem,3.5vw,3rem);line-height:1;font-weight:800;color:var(--primary);text-align:right}.checkout-confirm-meta-list{display:grid;grid-gap:12px;gap:12px}.checkout-qrcode-form{display:flex;align-items:center;justify-content:center}.checkout-qrcode-button{width:100%;padding:0;border:0;background:transparent;cursor:pointer}.checkout-qrcode-button .payment-qrcode-box{width:100%;color:var(--fg)}.payment-qrcode-box--large{width:100%;max-width:360px;min-height:360px;font-size:1.5rem}.checkout-qrcode-button:disabled{cursor:not-allowed;opacity:.6}.card-secret-box{min-height:120px;border:1px dashed var(--line);border-radius:14px;padding:16px;background:#f9fafb;word-break:break-all}.tracking-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:12px;gap:12px}.tracking-item{display:grid;justify-items:center;grid-gap:10px;gap:10px;padding:16px 12px;border:1px solid var(--line);border-radius:14px;background:#f9fafb}.tracking-item__dot{width:12px;height:12px;border-radius:999px;background:#d1d5db}.tracking-item--active,.tracking-item--done{border-color:var(--primary);background:#fff}.tracking-item--active .tracking-item__dot,.tracking-item--done .tracking-item__dot{background:var(--primary)}@media (max-width:900px){.checkout-confirm-headline,.checkout-confirm-layout{grid-template-columns:1fr}.checkout-confirm-amount{text-align:left}.payment-qrcode-box--large{min-height:280px}.detail-layout,.detail-layout--balanced,.grid--three-columns,.grid--two-columns,.option-list--two-columns,.tracking-list{grid-template-columns:1fr}.summary-item{flex-direction:column}.summary-item strong{max-width:100%;text-align:left}.order-header-card,.section-heading,.selection-card{align-items:flex-start}}