*{box-sizing:border-box;margin:0;padding:0}:root{--bg-page:#f5f5f7;--bg-header:#fff;--bg-message:#fff;--bg-bubble-gm:#f0f0ff;--bg-input:#fff;--bg-panel:#fafafa;--border-main:#e0e0e8;--border-light:#ebebf0;--text-primary:#1a1a2e;--text-secondary:#4a4a6a;--text-muted:#8a8aaa;--accent:#6366f1;--accent-light:#e8e8ff;--scrollbar-bg:#e8e8f0;--scrollbar-thumb:#c0c0d8}[data-theme=dark]{--bg-page:#0a0a1a;--bg-header:#0d0d1f;--bg-message:#0a0a1a;--bg-bubble-gm:#1a1a2e;--bg-input:#0d0d1f;--bg-panel:#0d0d1f;--border-main:#1a1a3a;--border-light:#1a1a3a;--text-primary:#d0d0e8;--text-secondary:#a0a0c0;--text-muted:#5a5a7a;--accent:#6366f1;--accent-light:#1a1a40;--scrollbar-bg:#0a0a1a;--scrollbar-thumb:#2a2a4a}html,body{background:var(--bg-page);height:100%;color:var(--text-primary);font-family:Hiragino Kaku Gothic ProN,Hiragino Sans,Yu Gothic,Meiryo,sans-serif;transition:background .2s,color .2s}@keyframes bounce{0%{transform:translateY(0)}to{transform:translateY(-4px)}}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:var(--scrollbar-bg)}::-webkit-scrollbar-thumb{background:var(--scrollbar-thumb);border-radius:3px}.md-content p{margin:0 0 .5em}.md-content p:last-child{margin-bottom:0}.md-content h1,.md-content h2,.md-content h3{color:var(--accent);margin:.6em 0 .3em;font-size:.9rem;font-weight:700}.md-content strong{color:var(--text-primary);letter-spacing:.01em;font-weight:700}.md-content em{color:var(--text-secondary);font-style:italic}.md-content ul,.md-content ol{margin:.3em 0 .5em 1.2em;padding:0}.md-content li{margin-bottom:.2em}.md-content hr{border:none;border-top:1px solid var(--border-main);margin:.6em 0}.md-content code{background:var(--accent-light);border-radius:3px;padding:1px 4px;font-size:.8em}