:root,[data-theme=dark]{--bg: #0b0f14;--card: #121923;--muted: #9fb0c3;--text: #e9f0f7;--accent: #7dd3fc;--accent2: #a78bfa;--border: rgba(255,255,255,.1);--sitebar-bg: rgba(11,15,20,.72);--body-gradient: radial-gradient(1200px 800px at 15% 10%, rgba(167,139,250,.18), transparent 55%), radial-gradient(1000px 700px at 85% 20%, rgba(125,211,252,.16), transparent 55%), var(--bg);--color-bg: var(--bg);--color-text: var(--text);--color-text-muted: var(--muted);--color-accent: var(--accent);--color-accent-bright: #b3e7ff;--color-accent-dim: rgba(125,211,252,.25);--color-surface: var(--card);--color-surface-elevated:#1a2535;--color-border: var(--border);--font-body: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;--font-display: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;--font-mono: ui-monospace, "Cascadia Code", "Source Code Pro", Menlo, Consolas, monospace;--content-max: 720px;--space-xs: 4px;--space-sm: 8px;--space-md: 14px;--space-lg: 20px;--space-xl: 32px;--space-2xl: 48px;--space-3xl: 72px}[data-theme=light]{--bg: #f4f6f9;--card: #ffffff;--muted: #5a6a7a;--text: #111820;--accent: #0369a1;--accent2: #6d28d9;--border: rgba(0,0,0,.09);--sitebar-bg: rgba(244,246,249,.85);--body-gradient: radial-gradient(1200px 800px at 15% 10%, rgba(109,40,217,.06), transparent 55%), radial-gradient(1000px 700px at 85% 20%, rgba(3,105,161,.07), transparent 55%), var(--bg);--color-bg: var(--bg);--color-text: var(--text);--color-text-muted: var(--muted);--color-accent: var(--accent);--color-accent-bright: #0284c7;--color-accent-dim: rgba(3,105,161,.2);--color-surface: var(--card);--color-surface-elevated:#f0f2f5;--color-border: var(--border);--font-body: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;--font-display: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;--font-mono: ui-monospace, "Cascadia Code", "Source Code Pro", Menlo, Consolas, monospace}[data-theme=editorial]{--bg: #f5f0e8;--card: #ede8de;--muted: #6b6560;--text: #1a1814;--accent: #c0392b;--accent2: #b8860b;--border: rgba(26,24,20,.12);--sitebar-bg: rgba(245,240,232,.9);--body-gradient: var(--bg);--color-bg: var(--bg);--color-text: var(--text);--color-text-muted: var(--muted);--color-accent: var(--accent);--color-accent-bright: #922b21;--color-accent-dim: rgba(192,57,43,.15);--color-surface: var(--card);--color-surface-elevated:#e8e2d6;--color-border: var(--border);--font-body: "Source Serif 4", Georgia, serif;--font-display: "Playfair Display", Georgia, serif;--font-mono: "JetBrains Mono", ui-monospace, Menlo, monospace}[data-theme=editorial] body{font-family:var(--font-body);font-weight:300;line-height:1.75}[data-theme=editorial] h1,[data-theme=editorial] h2,[data-theme=editorial] h3,[data-theme=editorial] h4{font-family:var(--font-display);font-weight:700;letter-spacing:-.01em}[data-theme=editorial] .brand{font-family:var(--font-display);font-weight:900;font-style:italic;letter-spacing:0}[data-theme=editorial] code,[data-theme=editorial] pre,[data-theme=editorial] .font-mono{font-family:var(--font-mono)}[data-theme=editorial] .card{border-color:#1a18141f;background:#ede8deeb;box-shadow:2px 2px #1a18140f}[data-theme=editorial] .sitebar{border-bottom:2px solid rgba(26,24,20,.15)}[data-theme=editorial] footer{border-top:1px solid rgba(26,24,20,.12)}*{box-sizing:border-box}body{margin:0;font-family:var(--font-body, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif);background:var(--body-gradient);color:var(--text);line-height:1.45;transition:background .2s,color .2s}a{color:var(--accent);text-decoration:underline;text-decoration-color:color-mix(in srgb,var(--accent) 40%,transparent);text-underline-offset:2px}a:hover{color:var(--color-accent-bright);text-decoration-color:var(--color-accent-bright)}.sitebar{position:sticky;top:0;z-index:50;background:var(--sitebar-bg);border-bottom:1px solid var(--border);backdrop-filter:blur(10px);transition:background .2s,border-color .2s}.sitebar-inner{max-width:980px;margin:0 auto;padding:12px 18px;display:flex;align-items:center;justify-content:space-between;gap:14px}.brand{font-weight:900;letter-spacing:.2px;text-decoration:none;color:var(--text)}.nav{display:flex;gap:10px;flex-wrap:wrap;justify-content:flex-end;align-items:center}.nav a{color:var(--muted);text-decoration:none;font-weight:750;padding:6px 10px;border-radius:999px;border:1px solid transparent;transition:color .15s,border-color .15s,background .15s}.nav a:hover{color:var(--text);border-color:color-mix(in srgb,var(--text) 12%,transparent)}.nav a.active{color:var(--text);border-color:color-mix(in srgb,var(--accent) 45%,transparent);background:color-mix(in srgb,var(--accent) 8%,transparent)}.theme-btn{background:transparent;border:1px solid var(--border);border-radius:999px;color:var(--muted);cursor:pointer;font-size:14px;line-height:1;padding:6px 10px;transition:color .15s,border-color .15s,background .15s}.theme-btn:hover{color:var(--text);border-color:color-mix(in srgb,var(--text) 20%,transparent);background:color-mix(in srgb,var(--text) 5%,transparent)}main{max-width:980px;margin:0 auto;padding:28px 18px 70px}.card{background:color-mix(in srgb,var(--card) 92%,transparent);border:1px solid var(--border);border-radius:22px;padding:18px;box-shadow:0 18px 40px #0000002e;backdrop-filter:blur(6px)}h1{margin:0 0 10px;font-size:clamp(1.7rem,3.2vw,2.6rem);letter-spacing:.2px}h2{margin:0 0 10px;font-size:1.2rem}h3{margin:0 0 8px;font-size:1.1rem}h4{margin:0 0 8px;font-size:1rem}.muted{color:var(--muted)}footer{max-width:980px;margin:0 auto;padding:0 18px 40px;color:var(--muted);font-size:.92rem}@media (max-width: 768px){.sitebar-inner{flex-direction:column;align-items:stretch}.nav{justify-content:center}}