:root{--bg:#f6f3ec;--ink:#12343b;--muted:#4f6a70;--accent:#0f7c8c;--rule:#d9d2c3;--err:#a33a2b}@media (prefers-color-scheme:dark){:root{--bg:#0d1f23;--ink:#e8f1f2;--muted:#9db4b8;--accent:#5cc3d1;--rule:#23414a;--err:#f08a7a}}.plain-page{min-height:100vh;margin:0;background:var(--bg);color:var(--ink);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;display:flex;align-items:center;justify-content:center;padding:24px 16px;box-sizing:border-box;position:relative}.plain-page a{color:var(--accent)}.plain-signin{position:absolute;top:12px;right:16px;font-size:.85rem}.plain-main{max-width:32rem;width:100%;text-align:center}.plain-main h1{font-size:clamp(2.25rem,8vw,3.5rem);letter-spacing:-.02em;margin:0 0 .5rem}.plain-tag{font-size:1.25rem;margin:0 0 .25rem}.plain-soon{color:var(--muted);margin:0 0 2rem}.plain-foot{border-top:1px solid var(--rule);padding-top:1rem;color:var(--muted);font-size:.9rem}.plain-form{display:grid;gap:.5rem;text-align:left;max-width:20rem;margin:0 auto}.plain-form input{font:inherit;padding:.6rem;border:1px solid var(--rule);border-radius:6px;background:transparent;color:var(--ink)}.plain-form button{font:inherit;margin-top:.5rem;padding:.7rem;border:0;border-radius:6px;background:var(--accent);color:var(--bg);cursor:pointer}.plain-err{color:var(--err);text-align:center}body:has(.plain-page){margin:0}