@layer base{:root{--max-width: 960px;--max-width-prose: 680px;--max-width-wide: 1100px;--sp-1: .25rem;--sp-2: .5rem;--sp-3: .75rem;--sp-4: 1rem;--sp-5: 1.25rem;--sp-6: 1.5rem;--sp-8: 2rem;--sp-10: 2.5rem;--sp-12: 3rem;--color-fg: #1a1a1a;--color-muted: #575757;--color-subtle: #888888;--color-bg: #ffffff;--color-surface: #f7f8fa;--color-code-bg: #f0f2f5;--color-border: #e0e2e6;--color-border-strong: #c5c9d0;--color-accent: #0b5cad;--color-accent-hover: #084e96;--color-accent-subtle: #e8f0f9;--color-ok: #1a7a34;--color-warn: #b45309;--color-error: #c0392b;--color-zone-driver-bg: rgba(40, 167, 69, .16);--color-zone-driver-fg: #156c2c;--color-zone-driver-border: #1f8a4c;--color-zone-system-bg: rgba(214, 167, 0, .18);--color-zone-system-fg: #8a6d00;--color-zone-system-border: #d6a700;--color-zone-unavoid-bg: rgba(179, 38, 30, .15);--color-zone-unavoid-fg: #b3261e;--color-zone-unavoid-border: #b3261e;--font-sans: system-ui, -apple-system, "Segoe UI", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "BIZ UDPGothic", Meiryo, sans-serif;--font-mono: "Cascadia Code", "Consolas", "Menlo", "Monaco", monospace;--fg: var(--color-fg);--muted: var(--color-muted);--accent: var(--color-accent);--border: var(--color-border)}}*,*:before,*:after{box-sizing:border-box}html{font-family:var(--font-sans);font-size:1rem;line-height:1.75;color:var(--color-fg);background:var(--color-bg);color-scheme:light;-webkit-text-size-adjust:100%}body{margin:0;background:var(--color-bg)}:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px;border-radius:2px}a{color:var(--color-accent);text-decoration:underline;text-underline-offset:.15em}a:hover,a:focus-visible{color:var(--color-accent-hover)}h1{font-size:1.85rem;line-height:1.35;font-weight:700;margin-top:0}h2{font-size:1.3rem;line-height:1.4;font-weight:700;margin-top:var(--sp-8)}h3{font-size:1.1rem;line-height:1.45;font-weight:600;margin-top:var(--sp-6)}table{border-collapse:collapse;width:100%;font-size:.9rem}th{background:var(--color-surface);font-weight:700;border-bottom:2px solid var(--color-border-strong);text-align:left;padding:var(--sp-2) var(--sp-3)}td{border-bottom:1px solid var(--color-border);padding:var(--sp-2) var(--sp-3);vertical-align:top}tr:nth-child(2n) td{background:#fcfcfd}pre{background:var(--color-code-bg);border:1px solid var(--color-border);border-radius:6px;padding:var(--sp-4);overflow-x:auto;font-size:.88rem;line-height:1.6}code{font-family:var(--font-mono);background:var(--color-code-bg);border:1px solid var(--color-border);border-radius:3px;padding:.1em .35em;font-size:.88em}pre code{background:none;border:none;padding:0;font-size:inherit}blockquote{border-left:4px solid var(--color-accent);background:var(--color-accent-subtle);margin:var(--sp-4) 0;padding:var(--sp-3) var(--sp-4);border-radius:0 4px 4px 0}blockquote>*:first-child{margin-top:0}blockquote>*:last-child{margin-bottom:0}.site-header{display:flex;flex-wrap:wrap;gap:var(--sp-2) var(--sp-6);align-items:baseline;justify-content:space-between;max-width:var(--max-width);margin:0 auto;padding:var(--sp-4) var(--sp-5);border-bottom:1px solid var(--color-border)}.site-title{font-weight:700;font-size:1.1rem;text-decoration:none;color:var(--color-fg)}.site-nav{display:flex;gap:var(--sp-4);flex-wrap:wrap}.site-nav a{text-decoration:none;color:var(--color-muted);font-size:.95rem}.site-nav a:hover,.site-nav a:focus-visible{color:var(--color-accent)}.site-nav a[aria-current=page]{color:var(--color-fg);font-weight:600;text-decoration:underline;text-underline-offset:.2em}.site-main{max-width:var(--max-width);margin:0 auto;padding:var(--sp-6) var(--sp-5) var(--sp-12)}.site-footer{max-width:var(--max-width);margin:0 auto;padding:var(--sp-5);border-top:1px solid var(--color-border);background:var(--color-surface);color:var(--color-subtle);font-size:.85rem}.prose{max-width:var(--max-width-prose)}.prose h2{border-bottom:1px solid var(--color-border);padding-bottom:var(--sp-2)}.card{background:var(--color-surface);border-top:3px solid var(--color-accent);border-radius:6px;padding:var(--sp-4) var(--sp-5);transition:box-shadow .15s ease}.card:hover{box-shadow:0 2px 8px #00000012}.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:var(--sp-4)}.zone-driver{background:var(--color-zone-driver-bg);color:var(--color-zone-driver-fg)}.zone-system{background:var(--color-zone-system-bg);color:var(--color-zone-system-fg)}.zone-unavoid{background:var(--color-zone-unavoid-bg);color:var(--color-zone-unavoid-fg)}