:root{--bg:#0b0f1a;--bg-soft:#121829;--card:hsla(0,0%,100%,.04);--card-border:hsla(0,0%,100%,.09);--text:#eef2ff;--muted:#93a0c0;--brand:#7c5cff;--brand-2:#19c7c2;--success:#2ecc71;--radius:18px}*{box-sizing:border-box;margin:0;padding:0}body,html{background:var(--bg);color:var(--text);font-family:ui-sans-serif,system-ui,Segoe UI,Roboto,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased;min-height:100%}body{background:radial-gradient(1100px 600px at 85% -10%,rgba(124,92,255,.22),transparent 60%),radial-gradient(900px 500px at -10% 110%,rgba(25,199,194,.18),transparent 60%),var(--bg)}a{color:inherit;text-decoration:none}.container{max-width:1120px;margin:0 auto;padding:28px 20px 64px}.nav{justify-content:space-between;padding:14px 0 28px}.brand,.nav{display:flex;align-items:center}.brand{gap:12px;font-weight:800;font-size:20px;letter-spacing:-.3px}.brand .logo{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(135deg,var(--brand),var(--brand-2));box-shadow:0 8px 24px rgba(124,92,255,.45);font-size:20px}.chip{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);background:var(--card);border:1px solid var(--card-border);padding:8px 14px;border-radius:999px}.dot{width:8px;height:8px;border-radius:50%;background:var(--brand-2);box-shadow:0 0 0 4px rgba(25,199,194,.18)}.headline h1{font-size:clamp(26px,4vw,40px);font-weight:800;letter-spacing:-.8px;line-height:1.25}.headline p{color:var(--muted);margin-top:10px;font-size:15px}.grid{display:grid;grid-template-columns:1.6fr .9fr;grid-gap:22px;gap:22px;margin-top:28px;align-items:start}@media (max-width:860px){.grid{grid-template-columns:1fr}}.cart-list{display:flex;flex-direction:column;gap:16px}.product{display:grid;grid-template-columns:116px 1fr auto;grid-gap:18px;gap:18px;align-items:center;background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius);padding:16px;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);transition:transform .2s ease,border-color .2s ease}.product:hover{transform:translateY(-2px);border-color:rgba(124,92,255,.55)}.thumb{width:116px;height:116px;border-radius:14px;object-fit:cover;background:#1b2236}.product .meta .badge{font-size:12px;color:var(--brand-2);font-weight:700}.product .meta h3{font-size:17px;margin:4px 0 6px}.product .meta .desc{color:var(--muted);font-size:13px;line-height:1.7;max-width:42ch}.product .side{display:flex;flex-direction:column;align-items:flex-end;gap:12px}.price{font-weight:800;font-size:18px;white-space:nowrap}.price small{color:var(--muted);font-weight:600;font-size:12px}.qty{display:flex;align-items:center;gap:6px;background:hsla(0,0%,100%,.05);border:1px solid var(--card-border);border-radius:999px;padding:4px}.qty button{width:28px;height:28px;border-radius:50%;border:none;background:hsla(0,0%,100%,.08);color:var(--text);font-size:16px;cursor:pointer;display:grid;place-items:center;transition:background .15s ease}.qty button:hover{background:var(--brand)}.qty span{min-width:22px;text-align:center;font-weight:700}.summary{position:-webkit-sticky;position:sticky;top:20px;background:linear-gradient(160deg,rgba(124,92,255,.14),rgba(25,199,194,.06));border:1px solid var(--card-border);border-radius:var(--radius);padding:24px;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.summary h2{font-size:18px;margin-bottom:18px}.row{display:flex;justify-content:space-between;align-items:center;padding:10px 0;color:var(--muted);font-size:14px}.row.total{border-top:1px dashed var(--card-border);margin-top:8px;padding-top:16px;color:var(--text);font-size:18px;font-weight:800}.pay-btn{width:100%;margin-top:20px;padding:15px 18px;border:none;border-radius:14px;font-size:16px;font-weight:800;color:#fff;cursor:pointer;background:linear-gradient(135deg,var(--brand),var(--brand-2));box-shadow:0 12px 30px rgba(124,92,255,.4);transition:transform .15s ease,opacity .2s ease;display:flex;align-items:center;justify-content:center;gap:10px}.pay-btn:hover{transform:translateY(-2px)}.pay-btn:disabled{opacity:.65;cursor:not-allowed;transform:none}.secure-note{margin-top:14px;text-align:center;color:var(--muted);font-size:12px;line-height:1.8}.error{margin-top:14px;background:rgba(255,90,90,.12);border:1px solid rgba(255,90,90,.4);color:#ffb4b4;padding:10px 14px;border-radius:12px;font-size:13px}.spinner{width:18px;height:18px;border:2px solid hsla(0,0%,100%,.45);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(1turn)}}.center{min-height:100vh;display:grid;place-items:center;padding:24px}.result{width:100%;max-width:460px;text-align:center;background:var(--card);border:1px solid var(--card-border);border-radius:24px;padding:40px 32px;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.result .icon{width:84px;height:84px;border-radius:50%;margin:0 auto 22px;display:grid;place-items:center;font-size:40px}.icon.ok{background:rgba(46,204,113,.16);color:var(--success);box-shadow:0 0 0 8px rgba(46,204,113,.08)}.icon.fail{background:rgba(255,90,90,.16);color:#ff6b6b;box-shadow:0 0 0 8px rgba(255,90,90,.08)}.result h1{font-size:24px;margin-bottom:10px}.result p{color:var(--muted);font-size:14px;line-height:1.9}.receipt{text-align:left;margin-top:24px;border-top:1px dashed var(--card-border);padding-top:18px}.receipt .row{font-size:13px}.receipt .row b{color:var(--text);font-weight:700;direction:ltr}.btn-ghost{display:inline-flex;margin-top:26px;padding:12px 26px;border-radius:12px;border:1px solid var(--card-border);background:hsla(0,0%,100%,.05);font-weight:700;transition:background .15s ease}.btn-ghost:hover{background:hsla(0,0%,100%,.1)}