:root{--bg:#f3f4f6;--card:#fff;--text:#111827;--muted:#6b7280;--border:#e5e7eb;--dark:#1f2937;--gold:#d4a574;--blue:#3b82f6;--danger:#ef4444;--success:#10b981}*{box-sizing:border-box}body,html{padding:0;margin:0;font-family:Pretendard,Inter,Arial,sans-serif;background:var(--bg);color:var(--text)}button,input,select,textarea{font:inherit}button{cursor:pointer}.appShell{min-height:100vh;display:flex}.sidebar{width:248px;padding:18px;background:linear-gradient(180deg,#111827,#0f172a);color:#fff;display:flex;flex-direction:column;gap:18px;position:-webkit-sticky;position:sticky;top:0;height:100vh}.logoBox{display:flex;align-items:center;gap:12px;padding:10px 8px}.logoMark{width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg,var(--gold),#f0d2a8);color:#111827;font-weight:800;display:grid;place-items:center}.logoTitle{font-weight:700}.logoSub{font-size:12px;color:hsla(0,0%,100%,.6)}.navList{display:flex;flex-direction:column;gap:8px}.navItem{border:0;background:transparent;color:hsla(0,0%,100%,.84);border-radius:14px;padding:12px 14px;display:flex;align-items:center;gap:10px;text-align:left}.navItem.active,.navItem:hover{background:hsla(0,0%,100%,.08);color:#fff}.navItem.muted{margin-top:8px}.syncCard{margin-top:auto;background:hsla(0,0%,100%,.05);border:1px solid hsla(0,0%,100%,.08);border-radius:18px;padding:16px}.syncTitle{font-weight:700;margin-bottom:10px}.syncRow{display:flex;justify-content:space-between;font-size:14px;margin-bottom:8px;color:hsla(0,0%,100%,.82)}.primaryBtn{border:0;background:linear-gradient(135deg,var(--dark),#111827);color:#fff;padding:11px 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var(--border);border-radius:12px;padding:11px 12px;background:#fff;outline:none}.uploadBox{grid-column:1/-1;border:1px dashed var(--border);border-radius:16px;padding:14px;display:flex;gap:14px;align-items:center;background:#fafafa}.uploadPreview{width:66px;height:66px;border-radius:16px;background:#f3f4f6;display:grid;place-items:center;font-size:30px}.channelSelectRow{display:flex;flex-wrap:wrap;gap:10px;margin:16px 0}.checkChip{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--border);background:#fff;padding:8px 12px;border-radius:999px}.toast{margin-top:12px;background:#111827;color:#fff;padding:12px 14px;border-radius:12px}.previewGrid{margin-top:14px;display:grid;grid-template-columns:repeat(2,1fr);grid-gap:14px;gap:14px}.previewItem{border:1px solid var(--border);border-radius:18px;padding:14px}.previewHeader{display:flex;justify-content:space-between;gap:8px;align-items:center}.previewImage{height:110px;border-radius:16px;display:grid;place-items:center;background:linear-gradient(135deg,#f7f7f7,#ececec);font-size:52px;margin:14px 0}.previewItem h4{margin:0 0 8px}.previewItem .price{font-size:24px;font-weight:800}.previewMeta{display:flex;justify-content:space-between;gap:10px;margin-top:8px;color:var(--muted);font-size:13px}.inventoryTable .matrixCell{width:100%;border:1px solid var(--border);background:#fff;border-radius:12px;min-height:40px;display:inline-flex;align-items:center;justify-content:center;gap:6px}.inventoryTable .matrixCell.conflict{background:#fef2f2;border-color:#fecaca;color:#b91c1c;font-weight:700}.productCell{display:flex;gap:10px;align-items:center}.emojiThumb{width:42px;height:42px;border-radius:12px;background:#f3f4f6;display:grid;place-items:center;font-size:20px}.productCell p{margin:3px 0 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.detailBox{display:flex;flex-direction:column;gap:14px;margin-top:14px}.productInline{display:flex;gap:12px;align-items:center;padding:12px;border:1px solid var(--border);border-radius:16px}.productInline p{margin:4px 0 0;color:var(--muted)}.detailBubble{padding:14px;background:#f9fafb;border-radius:16px}.detailBubble p{margin:6px 0 0;color:var(--muted)}textarea{min-height:160px;resize:vertical}@media (max-width:1400px){.kpiGrid.five{grid-template-columns:repeat(3,1fr)}.messagesLayout{grid-template-columns:240px 1fr 1fr}}@media (max-width:1100px){.sidebar{display:none}.messagesLayout,.twoCol{grid-template-columns:1fr}.previewGrid{grid-template-columns:1fr 1fr}}@media (max-width:768px){.mainArea{padding:16px}.actionBar,.header,.titleBar{flex-direction:column;align-items:stretch}.channelChips{display:none}.kpiGrid.five,.previewGrid,.productsPage .formGrid{grid-template-columns:1fr}}