:root{--bg:#f5f7fa;--panel:#fff;--ink:#172033;--muted:#64748b;--line:#d9dee7;--accent:#245f67;--accent-dark:#18474e;--accent-soft:#e5f1f2;--success:#1f7a4d;--warning:#b45309;--danger:#b42318;--shadow:0 10px 26px rgba(23,32,51,.07)}*{box-sizing:border-box}body,html{margin:0;padding:0;color:var(--ink);background:radial-gradient(circle at top left,rgba(36,95,103,.12),transparent 32%),linear-gradient(180deg,#fbfcfd 0,var(--bg) 42%),var(--bg);font-family:Arial,Helvetica,sans-serif}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button:disabled{cursor:not-allowed;opacity:.55}button:not(:disabled){cursor:pointer}button,input,select{outline-color:var(--accent)}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid rgba(36,95,103,.22);outline-offset:2px}.shell{display:grid;grid-template-columns:252px 1fr;min-height:100vh}.sidebar{display:flex;flex-direction:column;gap:8px;height:100vh;position:-webkit-sticky;position:sticky;top:0;overflow-y:auto;padding:18px;border-right:1px solid var(--line);background:hsla(0,0%,100%,.86);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.brand{display:flex;align-items:center;gap:10px;min-height:52px;padding:8px 4px 14px;font-size:18px;font-weight:700;margin-bottom:8px;color:var(--accent);line-height:1.15;letter-spacing:-.03em}.brand>span:last-child{display:block;max-width:150px}.brand-mark{display:grid;flex:0 0 38px;width:38px;height:38px;place-items:center;border-radius:8px;background:var(--accent);color:#fff;font-size:14px;letter-spacing:0}.navitem{display:flex;align-items:center;width:100%;min-height:44px;padding:11px 13px;border:1px solid var(--line);border-radius:8px;background:hsla(0,0%,100%,.86);color:#263247;font-size:14px;font-weight:700;line-height:1.2;transition:background .12s ease,border-color .12s ease,transform .12s 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var(--line);border-radius:8px;overflow:hidden;background:#fff;box-shadow:0 14px 30px rgba(23,32,51,.13)}.result{width:100%;display:flex;justify-content:space-between;text-align:left;padding:13px 14px;border:0;border-bottom:1px solid var(--line);background:#fff;color:var(--ink)}.result:hover{background:var(--accent-soft)}.cart-line>div:first-child,.result span{display:grid;grid-gap:4px;gap:4px}.cart-line small,.result small{color:var(--muted);font-size:12px}.empty{padding:14px;color:var(--muted)}.cart-heading{display:flex;justify-content:space-between;align-items:center;margin-top:26px;border-bottom:1px solid var(--line)}.cart-heading h2{margin-bottom:12px}.cart-heading span{color:var(--muted);font-size:13px}.cart-list{min-height:180px}.cart-line{grid-template-columns:1fr 112px auto;grid-gap:12px;gap:12px;padding:15px 0;border-bottom:1px solid var(--line)}.cart-line,.quantity{display:grid;align-items:center}.quantity{grid-template-columns:32px 44px 32px}.quantity button,.quantity input{height:32px;border:1px solid var(--line);background:#fff;text-align:center}.quantity button:first-child{border-radius:8px 0 0 8px}.quantity button:last-child{border-radius:0 8px 8px 0}.quantity input{width:44px;border-left:0;border-right:0}.checkout-card{position:-webkit-sticky;position:sticky;top:20px}.checkout-card h2{margin-top:5px}.summary-row,.summary-total{display:flex;justify-content:space-between;padding:12px 0}.summary-total{margin-top:8px;border-top:1px solid var(--line);font-size:20px}.full{width:100%;margin-top:10px}.login-shell{min-height:100vh;display:grid;place-items:center;padding:24px;background:radial-gradient(circle at top left,var(--accent-soft),transparent 45%),var(--bg)}.login-card{width:min(100%,420px);display:grid;grid-gap:14px;gap:14px}.login-card label{display:grid;grid-gap:7px;gap:7px;color:var(--muted);font-size:12px;font-weight:700}.login-card input{padding:13px 14px;border:1px solid var(--line);border-radius:8px}.receive-input,.rule-list 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