:root{--bg:#f7f7f8;--panel:#fff;--text:#1c1d21;--muted:#6b6f7a;--border:#e2e3e8;--accent:#4f46e5;--accent-soft:#eef0ff;--ok:#15803d;--ok-soft:#e7f6ec;--err:#b91c1c;--err-soft:#fdecec;--warn:#a16207;--warn-soft:#fdf6e3;--info:#374151;--info-soft:#f1f2f5;--code-bg:#f3f4f6;--tone-a:#c2185b;--tone-b:#6d28d9;--tone-c:#0369a1;--mono:ui-monospace, SFMono-Regular, "JetBrains Mono", Menlo, Consolas, monospace;--sans:system-ui, -apple-system, "Hiragino Sans", "Noto Sans JP", sans-serif;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}@media (prefers-color-scheme:dark){:root{--bg:#111215;--panel:#1a1b20;--text:#e6e7eb;--muted:#9599a5;--border:#2c2e36;--accent:#8b85ff;--accent-soft:#24233d;--ok:#4ade80;--ok-soft:#13291b;--err:#f87171;--err-soft:#331717;--warn:#facc15;--warn-soft:#2e2810;--info:#c7cad3;--info-soft:#22242b;--code-bg:#15161a;--tone-a:#f472b6;--tone-b:#a78bfa;--tone-c:#38bdf8;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}}*{box-sizing:border-box}body{background:var(--bg);color:var(--text);font-family:var(--sans);margin:0;font-size:14px;line-height:1.6}a{color:var(--accent)}code,pre,textarea{font-family:var(--mono);font-size:13px}ul{margin:0;padding:0;list-style:none}.muted{color:var(--muted)}.layout{grid-template-columns:248px minmax(0,1fr);min-height:100vh;display:grid}.sidebar{border-right:1px solid var(--border);background:var(--panel);flex-direction:column;height:100vh;padding:16px 12px;display:flex;position:sticky;top:0;overflow-y:auto}.sidebar-head{justify-content:space-between;align-items:center;padding:0 8px 12px;display:flex}.brand{color:var(--text);font-size:16px;font-weight:700;text-decoration:none}.brand span{color:var(--accent)}.menu-toggle{display:none}.sidebar-body{flex-direction:column;flex:1;display:flex}.search{width:100%;margin-bottom:8px}.nav-group{text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin:12px 8px 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var(--border);background:var(--panel);color:var(--text);cursor:pointer;white-space:nowrap;border-radius:6px;padding:6px 12px}button:hover{border-color:var(--accent)}button.small{padding:2px 10px;font-size:12px}.two-pane{grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:start;gap:20px;display:grid}.pane{flex-direction:column;gap:12px;min-width:0;display:flex}.section{background:var(--panel);border:1px solid var(--border);border-radius:10px;flex-direction:column;gap:10px;padding:14px 16px;display:flex}.section h2{margin:0;font-size:14px}.help{color:var(--muted);margin:0;font-size:13px}.code-head{color:var(--muted);justify-content:space-between;align-items:center;gap:8px;margin-bottom:4px;font-size:12px;font-weight:600;display:flex}.file-actions{align-items:center;gap:8px;font-weight:400;display:flex}.hint{font-size:11px}.file-drop{border:1px dashed var(--border);background:var(--panel);border-radius:10px;flex-direction:column;gap:10px;padding:14px 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