:root{--green:#16a34a;--green-soft:#dcfce7;--ink:#0f172a;--muted:#64748b;--amber:#f59e0b;--red:#dc2626;--bg:#f8fafc;--card:#fff;--line:#e2e8f0;--radius:12px}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.5 Inter,-apple-system,Segoe UI,Roboto,sans-serif}.container{max-width:640px;margin:0 auto;padding:16px}@media (min-width:768px){.container.wide{max-width:960px}}.topbar{display:flex;align-items:center;justify-content:space-between;padding:12px 0}.brand{font-weight:800;font-size:20px;text-decoration:none;color:var(--ink)}.brand span{color:var(--green)}.zipchip{background:var(--card);border:1px solid var(--line);border-radius:999px;padding:4px 12px;font-size:14px;color:var(--muted)}.searchbox{display:flex;gap:8px;margin:8px 0 16px}.searchbox input{flex:1 1;padding:12px 16px;border:1px solid var(--line);border-radius:var(--radius);font-size:16px}.btn{background:var(--green);color:#fff;border:0;border-radius:var(--radius);padding:12px 20px;font-size:16px;font-weight:600;cursor:pointer;min-height:44px}.btn:disabled{opacity:.5;cursor:default}.btn.ghost{background:var(--card);color:var(--ink);border:1px solid var(--line)}.btn.block{width:100%}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;margin-bottom:12px}.card.cheapest{border:2px solid var(--green);position:relative}.badge{display:inline-block;font-size:12px;font-weight:700;border-radius:999px;padding:2px 10px}.badge.win{background:var(--green);color:#fff}.badge.fast{background:#eff6ff;color:#1d4ed8}.badge.surge{background:#fef3c7;color:#92400e}.badge.stock{background:#fee2e2;color:#991b1b}.provenance{font-size:12px;color:var(--muted)}.storehead{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:8px}.storehead h3{margin:0;font-size:17px}.dist{color:var(--muted)}.dist,.lines{font-size:14px}.lines{margin:8px 0;padding:0;list-style:none}.lines li{padding:2px 0}.lines li,.totalrow{display:flex;justify-content:space-between}.totalrow{align-items:center;border-top:1px dashed var(--line);padding-top:10px;margin-top:8px}.total{font-size:20px;font-weight:800}.feenote{font-size:12px;color:var(--muted)}.savings{position:-webkit-sticky;position:sticky;bottom:0;background:var(--green-soft);color:#166534;text-align:center;padding:10px;border-radius:var(--radius);font-weight:600;margin-top:8px}.stepper{display:flex;gap:4px;margin:16px 0}.step{flex:1 1;height:6px;border-radius:3px;background:var(--line)}.step.done{background:var(--green)}.bid{justify-content:space-between;align-items:center}.bid,.chat{display:flex}.chat{gap:8px;margin-top:12px}.chat input{flex:1 1;padding:10px 14px;border:1px solid var(--line);border-radius:var(--radius)}.msgs{max-height:220px;overflow-y:auto;font-size:14px}.msgs p{background:var(--bg);border-radius:8px;padding:6px 10px}.err{color:var(--red);font-size:14px}