:root{--color-bg:#fff;--color-sidebar-bg:#fff;--color-sidebar-border:#e5e7eb;--color-text-heading:#475569;--color-text-body:#374151;--color-text-muted:#6b7280;--color-text-faint:#94a3b8;--color-accent:#005da3;--color-accent-hover:#00477a;--color-accent-soft:#eff6ff;--color-border:#e1e1e7;--color-input-bg:#fafafa;--radius-sm:4px;--radius-md:6px;--radius-lg:8px;--font-family:var(--font-noto-sans-jp), -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", sans-serif}*{box-sizing:border-box}body{font-family:var(--font-family);color:var(--color-text-body);background:var(--color-bg);margin:0}.shell{min-height:100vh;display:flex}nav.sidebar{background:var(--color-sidebar-bg);border-right:1px solid var(--color-sidebar-border);width:225px;color:var(--color-text-body);flex:none;padding:1.5rem 1rem}nav.sidebar h1{color:var(--color-text-heading);margin:0 0 1.5rem;font-size:.95rem;font-weight:700}nav.sidebar a{color:var(--color-text-body);border-radius:var(--radius-lg);margin-bottom:.2rem;padding:.5rem .6rem;font-size:.9rem;text-decoration:none;display:block}nav.sidebar a:hover{background:#f3f4f6}nav.sidebar a.current{background:var(--color-accent-soft);color:var(--color-text-body);font-weight:700}nav.sidebar a.current:hover{background:var(--color-accent-soft)}main{flex:1;max-width:88rem;padding:2rem 2.5rem}h2{color:var(--color-text-heading);margin-top:0;font-size:1.6rem;font-weight:700}form.stack{flex-direction:column;gap:.9rem;max-width:32rem;display:flex}form.stack.reply-form{max-width:none}form.stack.reply-form textarea{width:100%}label{color:var(--color-text-body);flex-direction:column;gap:.3rem;font-size:.85rem;font-weight:600;display:flex}input,select,textarea{font:inherit;border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-input-bg);color:var(--color-text-body);padding:.5rem .75rem}button{font:inherit;border-radius:var(--radius-md);background:var(--color-accent);color:#fff;cursor:pointer;border:none;width:fit-content;padding:.45rem 1.5rem;font-size:.9rem}button:hover{background:var(--color-accent-hover)}table{border-collapse:collapse;width:100%;font-size:.9rem}th{text-align:left;border-bottom:1px solid var(--color-sidebar-border);color:var(--color-text-faint);padding:1rem .6rem;font-size:.8rem;font-weight:700}td{text-align:left;border-bottom:1px solid var(--color-sidebar-border);color:var(--color-text-muted);padding:.75rem .6rem}tbody tr:hover{background:#fafafa}.mono{font-family:ui-monospace,SF Mono,Menlo,monospace}.notice{background:var(--color-accent-soft);border-radius:var(--radius-sm);color:var(--color-text-body);margin-bottom:1rem;padding:.75rem 1rem;font-size:.85rem}.card{border:1px solid var(--color-sidebar-border);border-radius:var(--radius-lg);background:#fff;margin-bottom:1rem;padding:1.25rem 1.4rem}.citation{color:var(--color-text-faint);font-size:.85rem}