:root{color-scheme:light;--bg:#f4f5fb;--surface:#ffffff;--ink:#0f172a;--muted:#4b5675;--line:#dde1ee;--accent:#4338ca;--accent-ink:#ffffff;--accent-2:#f59e0b;--accent-2-ink:#0f172a;--brand-grad:linear-gradient(95deg,#4338ca,#5b4fe0 50%,#7c5cf0);--danger:#b42318;--warn:#b45309}:root[data-theme=dark]{color-scheme:dark;--bg:#0b1020;--surface:#131a2e;--ink:#e6e9f5;--muted:#9aa3c2;--line:#262f4d;--accent:#8b93ff;--accent-ink:#0f172a;--accent-2:#fbbf24;--accent-2-ink:#0f172a;--brand-grad:linear-gradient(95deg,#8b93ff,#a39bff 50%,#c1a8ff);--danger:#ff8a80;--warn:#fbbf24}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.55 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;min-height:100vh;display:flex;flex-direction:column}a{color:inherit}:focus-visible{outline:3px solid var(--accent);outline-offset:2px}.line-icon{display:block;width:1em;height:1em;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}.line-icon .icon-text{font:800 5.2px/1 system-ui,sans-serif}.line-icon .icon-fill,.line-icon .icon-text{fill:currentColor;stroke:none}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}.wrap{width:90%;max-width:none;margin:0 auto;padding:0}.site-header{background:var(--surface);border-bottom:1px solid var(--line)}.bar{display:flex;justify-content:space-between;min-height:60px}.bar,.brand{align-items:center}.brand{display:inline-flex;gap:10px;font-weight:700;text-decoration:none;letter-spacing:-.01em}.brand img{display:block}nav{display:flex;align-items:center;gap:20px}.menu summary,nav a{text-decoration:none;cursor:pointer;padding:6px 2px}.menu summary:hover,nav a:hover{color:var(--accent)}.menu{position:relative}.menu summary{list-style:none}.menu summary::-webkit-details-marker{display:none}.menu summary:after{content:" ▾"}.menu ul{position:absolute;right:0;top:100%;z-index:10;margin:6px 0 0;padding:6px;list-style:none;min-width:200px;background:var(--surface);border:1px solid var(--line);border-radius:6px}.menu li a{display:block;padding:8px 10px;border-radius:4px}.menu li a:hover{background:var(--bg)}.hero{padding:56px 0 28px}.hero h1{font-size:clamp(1.9rem,5vw,3rem);line-height:1.1;letter-spacing:-.02em;margin:0 0 12px;max-width:18ch}.hero p{color:var(--muted);max-width:60ch;margin:0 0 8px}.note{border-left:3px solid var(--accent);padding-left:12px}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));grid-gap:20px;gap:20px;padding-bottom:64px}.card{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:24px;display:flex;flex-direction:column;gap:10px}.card h2{margin:0;font-size:1.25rem}.card p{margin:0 0 8px;color:var(--muted);flex:1 1}.icon{font-size:1.6rem;color:var(--accent)}.btn{align-self:flex-start;text-decoration:none;font-weight:600;background:var(--accent);color:var(--accent-ink);padding:10px 16px;border-radius:6px}.btn:hover{filter:brightness(1.08)}.theme-toggle{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;padding:0;cursor:pointer;color:var(--ink);background:transparent;border:1px solid var(--line);border-radius:50%}.theme-toggle:hover{color:var(--accent);border-color:var(--accent)}.theme-toggle svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.theme-toggle .icon-sun{display:none}:root[data-theme=dark] .theme-toggle .icon-sun{display:block}:root[data-theme=dark] .theme-toggle .icon-moon{display:none}