:root{--bg: #f8fafc;--bg-accent: #eef4ff;--surface: #ffffff;--surface-muted: #f1f5f9;--surface-subtle: #f8fafc;--border: #e2e8f0;--border-strong: #cbd5e1;--text: #0f172a;--text-muted: #64748b;--text-soft: #94a3b8;--primary: #2563eb;--primary-hover: #1d4ed8;--primary-soft: #dbeafe;--success: #059669;--success-soft: #d1fae5;--warning: #d97706;--warning-soft: #fef3c7;--danger: #dc2626;--danger-soft: #fee2e2;--focus-ring: #bfdbfe;color:var(--text);background:radial-gradient(circle at top left,rgb(219 234 254 / 54%),transparent 32rem),linear-gradient(180deg,#ffffff 0%,var(--bg) 26rem);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility}*{box-sizing:border-box}body{margin:0;min-width:320px}button,input,select,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.46}.app-shell{margin:0 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var(--border);border-radius:8px;color:#334155;line-height:1.55;margin:0;padding:12px 14px}.chip-grid{display:grid;gap:10px;grid-template-columns:repeat(auto-fit,minmax(136px,1fr))}.chip{align-items:center;background:var(--surface);border:1px solid var(--border);border-radius:999px;color:#334155;display:inline-flex;gap:7px;min-height:38px;padding:7px 11px;transition:background-color .16s ease,border-color .16s ease,color .16s ease}.chip:hover{border-color:#93c5fd}.chip.is-selected{background:var(--primary-soft);border-color:#93c5fd;color:#1d4ed8}.quick-tag-row,.selected-tool-row{display:flex;flex-wrap:wrap;gap:8px}.quick-tag,.selected-tool{align-items:center;background:var(--surface);border:1px solid var(--border);border-radius:999px;color:#334155;cursor:pointer;display:inline-flex;font-size:13px;font-weight:650;min-height:34px;padding:6px 11px;transition:background-color .16s ease,border-color .16s ease,color .16s ease,transform .16s 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