:root{--bg:#141826;--fg:#e8ebf5;--muted:#8a93b2;--ok:#4fd18b;--bad:#ff6b6b;color:var(--fg);background:var(--bg);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box}body{background:radial-gradient(circle at 20% 10%, #2a3358 0%, var(--bg) 60%);min-height:100dvh;margin:0}.shell{text-align:center;place-content:center;min-height:100dvh;padding:16px;display:grid}h1{letter-spacing:-.03em;margin:0;font-size:clamp(48px,10vw,120px);font-weight:700}.tagline{color:var(--muted);margin:0 0 32px;font-size:clamp(16px,2.5vw,28px)}.probes{color:var(--muted);margin:0;padding:0;font-size:clamp(14px,1.6vw,20px);line-height:1.8;list-style:none}.lang{gap:4px;display:flex;position:fixed;top:16px;right:16px}.lang button{color:var(--muted);font:inherit;cursor:pointer;background:0 0;border:1px solid #2f3756;border-radius:8px;padding:6px 10px;font-size:13px}.lang button.active{color:var(--fg);border-color:#7c8cff}.install{color:#0d1020;font:inherit;cursor:pointer;background:#7c8cff;border:0;border-radius:14px;margin-top:40px;padding:14px 28px;font-size:clamp(16px,2vw,22px);font-weight:600}.install-hint{color:var(--muted);margin-top:40px;font-size:clamp(13px,1.5vw,18px)}.probes .ok:before,.probes .bad:before{content:"●  "}.probes .ok:before{color:var(--ok)}.probes .bad:before{color:var(--bad)}