:root{font-family:Inter,Hiragino Kaku Gothic ProN,Hiragino Sans,sans-serif;line-height:1.5;--bg: #0b1120;--text: #e5e7eb;--muted: #94a3b8;--surface: #111827;--surface-elevated: #1f2937;--border: #334155;--link: #93c5fd;--link-active: #ffffff;--error: #fca5a5;--primary: #3b82f6}:root[data-theme=light]{--bg: #f8fafc;--text: #1f2937;--muted: #64748b;--surface: #ffffff;--surface-elevated: #f8fafc;--border: #e2e8f0;--link: #1d4ed8;--link-active: #0f172a;--error: #b91c1c;--primary: #2563eb}*{box-sizing:border-box}html,body,#app{min-height:100%}body{margin:0;background:var(--bg);color:var(--text);transition:background .2s,color .2s}.layout{max-width:1200px;margin:0 auto;padding:16px}.header{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:20px}.header h1{margin:0;font-size:clamp(1.25rem,2.8vw,1.75rem)}.header-actions{display:flex;align-items:center;gap:12px}.header-buttons{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}.btn-pill{border:1px solid var(--border);background:var(--surface-elevated);color:var(--text);border-radius:999px;padding:6px 12px;font:inherit;cursor:pointer;transition:all .2s;white-space:nowrap;text-decoration:none;display:inline-flex;align-items:center;justify-content:center}.btn-pill:hover{border-color:var(--link);background:var(--surface)}.btn-pill:disabled{opacity:.5;cursor:not-allowed}article h1{font-size:1.75rem;font-weight:700;margin-bottom:1.5rem;line-height:1.2}article{line-height:1.75}article p{margin-bottom:1.25rem}article h2{font-size:1.5rem;margin-top:2rem;margin-bottom:1rem;border-bottom:1px solid var(--border);padding-bottom:.5rem}article a{color:var(--link);text-decoration:underline;text-underline-offset:4px}article a:hover{color:var(--link-active)}.navigation{display:flex;justify-content:space-between;gap:12px;margin:20px 0}.navigation-top{margin-top:0;margin-bottom:24px}.footer-link{margin-top:40px;padding-top:20px;border-top:1px solid var(--border);color:var(--muted);font-size:.9rem}.footer-link a{color:var(--link);text-decoration:none}.footer-link a:hover{text-decoration:underline}.copy-link{cursor:pointer}.copy-link.disabled{opacity:.5;cursor:default;pointer-events:none}.status{color:var(--muted);font-size:.95rem}@media (max-width: 768px){.header{flex-direction:column;align-items:stretch}.navigation{flex-direction:column}.navigation .btn-pill{width:100%}}