:root{--bg-primary:#f5f5f7;--bg-card:#fff;--text-primary:#1d1d1f;--text-secondary:#374151;--text-muted:#6b7280;--accent:#4f46e5;--accent-light:#6366f1;--border:#e5e7eb;--shadow:rgba(0,0,0,0.08);--header-bg:linear-gradient(135deg,#4f46e5,#6366f1);--header-text:#fff;--toggle-bg:rgba(255,255,255,0.2);--toggle-hover:rgba(255,255,255,0.3)}[data-theme=dark]{--bg-primary:#111827;--bg-card:#1f2937;--text-primary:#f3f4f6;--text-secondary:#d1d5db;--text-muted:#9ca3af;--accent:#818cf8;--accent-light:#a5b4fc;--border:#374151;--shadow:rgba(0,0,0,0.3);--header-bg:linear-gradient(135deg,#3730a3,#4338ca);--header-text:#f3f4f6;--toggle-bg:rgba(255,255,255,0.1);--toggle-hover:rgba(255,255,255,0.2)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background-color:var(--bg-primary);color:var(--text-primary);line-height:1.6;transition:background-color .3s,color .3s}.header{background:var(--header-bg);color:var(--header-text);padding:48px 24px;text-align:center;position:relative}.header h1{font-size:32px;font-weight:700;margin-bottom:8px}.header p{font-size:16px;opacity:.9}.theme-toggle{position:absolute;top:16px;right:16px;background:var(--toggle-bg);border:none;color:var(--header-text);width:40px;height:40px;border-radius:50%;cursor:pointer;font-size:20px;display:flex;align-items:center;justify-content:center;transition:background .2s}.theme-toggle:hover{background:var(--toggle-hover)}.container{max-width:800px;margin:0 auto;padding:32px 24px 64px}.last-updated{text-align:center;color:var(--text-muted);font-size:14px;margin-bottom:32px}.section{background:var(--bg-card);border-radius:12px;padding:28px 32px;margin-bottom:20px;box-shadow:0 1px 3px var(--shadow);transition:background-color .3s,box-shadow .3s}.section h2{font-size:20px;font-weight:600;color:var(--accent);margin-bottom:16px;padding-bottom:12px;border-bottom:2px solid var(--border)}.section h3{font-size:16px;font-weight:600;color:var(--text-primary);margin-top:20px;margin-bottom:8px}.section p{font-size:15px;color:var(--text-secondary);margin-bottom:12px}.section ul{list-style:none;padding:0;margin-bottom:12px}.section ul li{font-size:15px;color:var(--text-secondary);padding:4px 0 4px 20px;position:relative}.section ul li:before{content:"\2022";color:var(--accent);font-size:18px;position:absolute;left:0;top:2px}.section a{color:var(--accent);text-decoration:none}.section a:hover{text-decoration:underline}.footer{text-align:center;padding:32px 24px;color:var(--text-muted);font-size:14px;border-top:1px solid var(--border);margin-top:16px}@media (max-width:600px){.header{padding:36px 16px}.header h1{font-size:26px}.container{padding:24px 16px 48px}.section{padding:20px}.theme-toggle{top:12px;right:12px;width:36px;height:36px;font-size:18px}}