:root{--bg:#f5f6f8;--surface:#fff;--border:#d9dce1;--text:#1c1f24;--text-muted:#6b7280;--accent:#2f6feb;--accent-contrast:#fff;--error-bg:#fdeceb;--error-border:#e5534b;--error-text:#8a1f16;--mono:ui-monospace, Consolas, "SFMono-Regular", monospace;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}:root[data-theme=dark]{--bg:#14161a;--surface:#1b1e24;--border:#2e333c;--text:#e6e8eb;--text-muted:#9aa1ac;--accent:#5b9dff;--accent-contrast:#0b1220;--error-bg:#3a1c1c;--error-border:#e5534b;--error-text:#ffb4ac;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}*{box-sizing:border-box}body{background:var(--bg);color:var(--text);margin:0;font-family:system-ui,Segoe UI,Roboto,sans-serif}.app{max-width:1300px;margin:0 auto;padding:16px 20px 48px}.site-header{align-items:center;gap:10px;margin-bottom:20px;display:flex}.site-header__brand{color:var(--accent);white-space:nowrap;font-size:15px;font-weight:700;text-decoration:none}.site-header__brand:hover{text-decoration:underline}.site-header__divider{color:var(--text-muted);font-weight:400}.site-header__title{color:var(--text-muted);white-space:nowrap;font-size:15px;font-weight:600}.toolbar-spacer{flex:1}.btn,.toggle-btn{border:1px solid var(--border);background:var(--surface);color:var(--text);cursor:pointer;border-radius:6px;padding:6px 12px;font-size:13px}.btn:hover,.toggle-btn:hover{border-color:var(--accent)}.btn:disabled{opacity:.5;cursor:not-allowed}.icon-btn{padding:6px 10px}.builder-section{background:var(--surface);border:1px solid var(--border);border-radius:10px;margin-bottom:16px;padding:16px}.builder-section h2{margin:0 0 4px;font-size:16px}.builder-section h3{margin:16px 0 8px;font-size:14px}.section-hint{color:var(--text-muted);margin:0 0 12px;font-size:13px}.row{flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:8px;display:flex}.row-spacer{flex:none;width:62px}input,select{border:1px solid var(--border);background:var(--bg);color:var(--text);border-radius:6px;padding:6px 8px;font-family:inherit;font-size:13px}.table-name-input{max-width:160px;font-weight:600}.table-def{border:1px solid var(--border);border-radius:8px;margin-bottom:12px;padding:12px}.sample-grid-wrap{margin:8px 0;overflow-x:auto}.sample-grid{border-collapse:collapse;width:100%;font-size:12px}.sample-grid th,.sample-grid td{border:1px solid var(--border);text-align:left;padding:4px 6px}.sample-grid input{width:100%;min-width:60px;padding:2px 4px}.cell-null{color:var(--text-muted);font-style:italic}.column-checklist{flex-wrap:wrap;gap:10px;display:flex}.column-check{font-size:13px;font-family:var(--mono);align-items:center;gap:4px;display:flex}.stage-row{border-bottom:1px solid var(--border);align-items:center;gap:10px;padding:8px 0;display:flex}.stage-row:last-of-type{border-bottom:none}.stage-label{color:var(--text-muted);flex:none;min-width:20px;font-size:12px;font-weight:600}.stage-form{flex-wrap:wrap;flex:1;align-items:center;gap:8px;display:flex}.stage-actions{flex:none;gap:4px;display:flex}.tabs{border-bottom:1px solid var(--border);gap:4px;margin-bottom:16px;display:flex}.tab-btn{color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-bottom:2px solid #0000;margin-bottom:-1px;padding:8px 14px;font-size:14px}.tab-btn--active{color:var(--accent);border-bottom-color:var(--accent);font-weight:600}.layout{grid-template-columns:1fr 1fr;align-items:start;gap:20px;display:grid}@media (width<=860px){.layout{grid-template-columns:1fr}}.layout__builders{flex-direction:column;gap:16px;display:flex}.layout__output{position:sticky;top:16px}.query-output__header{justify-content:space-between;align-items:center;margin-bottom:8px;display:flex}.query-output__header h2{margin:0}.query-output__text{white-space:pre-wrap;word-break:break-word;font-family:var(--mono);background:var(--bg);border:1px solid var(--border);border-radius:8px;min-height:120px;margin:0;padding:12px;font-size:13px;line-height:1.5}.join-legend{border-bottom:1px solid var(--border);flex-wrap:wrap;gap:16px;margin-bottom:16px;padding-bottom:16px;display:flex}.join-legend__item{align-items:center;gap:8px;max-width:220px;font-size:12px;display:flex}.sample-tables{flex-wrap:wrap;gap:20px;margin-bottom:16px;display:flex}.sample-tables__item{flex:260px;min-width:220px}.result-grid th{background:var(--bg)}