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h3{margin-bottom:20px;font-size:16px;font-weight:600}.donut-chart{flex-direction:column;gap:12px;display:flex}.donut-item{grid-template-columns:16px 80px 40px 40px 1fr;align-items:center;gap:8px;font-size:13px;display:grid}.donut-dot{border-radius:3px;width:12px;height:12px}.donut-label{color:var(--color-text-secondary)}.donut-value{text-align:right;font-weight:600}.donut-pct{color:var(--color-text-muted);font-size:12px}.donut-bar{background:#f3f4f6;border-radius:4px;height:8px;overflow:hidden}.donut-bar-fill{border-radius:4px;height:100%;transition:width .5s}.platform-legend{gap:20px;margin-bottom:16px;display:flex}.legend-item{color:var(--color-text-secondary);align-items:center;gap:6px;font-size:13px;display:flex}.legend-dot{border-radius:2px;width:10px;height:10px}.legend-dot.wechat{background:var(--color-primary)}.legend-dot.xhs{background:#ef4444}.platform-bars-wrap{flex-direction:column;gap:8px;display:flex}.platform-row{grid-template-columns:140px 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0}.binding-header{justify-content:space-between;align-items:center;margin-bottom:16px;display:flex}.binding-platform{font-size:15px;font-weight:600}.binding-status{color:var(--color-text-muted);font-size:13px}.binding-status.verified{color:var(--color-success);font-weight:500}.binding-form{flex-direction:column;gap:14px;display:flex}.binding-actions{align-items:center;gap:10px;display:flex}.help-link{color:var(--color-primary);margin-left:auto;font-size:13px}.help-link:hover{text-decoration:underline}.binding-info{color:var(--color-text-secondary);border-radius:var(--radius-sm);background:#e6faf2;padding:10px;font-size:13px}.platform-divider{background:var(--color-border-light);height:1px}@media (width<=768px){.settings-grid{grid-template-columns:1fr}}:root{--color-primary:#1a6dff;--color-primary-light:#e8f0ff;--color-primary-dark:#0d4fbf;--color-secondary:#00b578;--color-secondary-light:#e6faf2;--color-bg:#f5f7fa;--color-surface:#fff;--color-text:#1a1a2e;--color-text-secondary:#6b7280;--color-text-muted:#9ca3af;--color-border:#e5e7eb;--color-border-light:#f0f0f5;--color-danger:#ef4444;--color-warning:#f59e0b;--color-success:#10b981;--color-sidebar:#1a1a2e;--color-sidebar-hover:#2a2a4a;--color-sidebar-active:#1a6dff;--shadow-sm:0 1px 2px #0000000d;--shadow-md:0 4px 12px #00000014;--shadow-lg:0 8px 24px #0000001f;--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--font-sans:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, 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var(--color-border);border-radius:var(--radius-sm);background:var(--color-surface);color:var(--color-text);cursor:pointer;padding:10px 20px;font-size:14px;font-weight:500;transition:all .2s}.btn-secondary:hover{border-color:var(--color-primary);color:var(--color-primary)}.btn-secondary:disabled{opacity:.5;cursor:not-allowed}.btn-danger{background:var(--color-danger);color:#fff;border-radius:var(--radius-sm);cursor:pointer;border:none;padding:10px 20px;font-size:14px;font-weight:500;transition:all .2s}.btn-danger:hover{box-shadow:0 4px 12px #ef44444d}.page-header{justify-content:space-between;align-items:flex-start;margin-bottom:24px;display:flex}.page-header h1{font-size:24px;font-weight:700}.page-subtitle{color:var(--color-text-secondary);margin-top:4px;font-size:14px}.form-group{flex-direction:column;gap:6px;display:flex}.form-group label{color:var(--color-text-secondary);font-size:13px;font-weight:500}.form-group input,.form-group select,.form-group textarea{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:#fafafa;outline:none;padding:10px 14px;font-size:14px;transition:all .2s}.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--color-primary);background:#fff;box-shadow:0 0 0 3px #1a6dff1a}.form-group input.error{border-color:var(--color-danger)}.form-error{color:var(--color-danger);font-size:12px}.status-badge{border-radius:12px;padding:2px 10px;font-size:12px;font-weight:500;display:inline-block}.product-tag{background:var(--color-primary-light);color:var(--color-primary);border-radius:4px;padding:2px 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