:root{--blue:#2563eb;--sky:#bae6fd;--text:#334155;--muted:#64748b;--border:#dbeafe;--radius:14px}*{box-sizing:border-box}html,body{min-height:100%}body{margin:0;font-family:Arial,"Noto Sans Bengali",sans-serif;background:#bae6fd;color:var(--text);font-size:13px}.shell{min-height:100vh;display:flex;padding:10px;gap:10px}.sidebar{width:260px;flex:0 0 260px;background:rgba(255,255,255,.86);backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.95);border-radius:24px;padding:16px;display:flex;flex-direction:column;position:sticky;top:10px;height:calc(100vh - 20px);box-shadow:0 18px 45px rgba(15,23,42,.08);z-index:50}.brand{display:flex;gap:10px;align-items:center;margin:4px 2px 16px}.brand-logo{width:42px;height:42px;border-radius:50%;display:grid;place-items:center;background:var(--blue);color:#fff;font-weight:800;font-size:16px}.brand b{display:block;font-size:13px}.brand small,.userbox 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@media(max-width:420px){.grid-4,.grid-3,.grid-2,.grid-6{grid-template-columns:1fr}.line-items .item-row,.line-items.purchase .item-row,.payment-row{grid-template-columns:1fr}}
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