:root{--bg:#fff;--fg:#111b21;--muted:#667781;--accent:#18a05e;--accent-fg:#fff;--card:#f0f2f5;--line:#e4e8ea;--wrap:44rem}
@media (prefers-color-scheme:dark){:root{--bg:#0b141a;--fg:#e9edef;--muted:#8696a0;--accent:#2bbf75;--accent-fg:#06210f;--card:#202c33;--line:#2a3942}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;min-height:100vh;display:flex;flex-direction:column}
main{flex:1;width:100%;max-width:var(--wrap);margin:0 auto;padding:2rem 16px}
h1{font-size:1.7rem;line-height:1.25;margin:.2rem 0 .6rem}h2{font-size:1.15rem;margin:1.8rem 0 .4rem}
a{color:var(--accent)}p,li{max-width:62ch}
.brand{display:flex;align-items:center;gap:.6rem;font-weight:700;font-size:1.1rem;margin-bottom:1.5rem}
.logo{width:36px;height:36px;border-radius:10px;background:var(--accent);color:var(--accent-fg);display:grid;place-items:center;font-weight:800}
.btn{display:inline-block;background:var(--accent);color:var(--accent-fg);text-decoration:none;font-weight:600;border:0;border-radius:999px;padding:.85rem 1.6rem;font-size:1rem;cursor:pointer}
.card{background:var(--card);border-radius:14px;padding:1rem 1.1rem;margin:1.2rem 0}
.note{color:var(--muted);font-size:.92rem}
.center{text-align:center}
#qr{width:240px;max-width:70vw;margin:1rem auto;background:#fff;border-radius:12px;padding:6px}#qr svg{display:block;width:100%;height:auto}
footer{border-top:1px solid var(--line);padding:1rem 16px;text-align:center;font-size:.85rem;color:var(--muted)}
footer a{color:var(--muted);margin:0 .5rem}
[hidden]{display:none!important}
mark.todo{background:#fff3b0;color:#000}
.brandlink{color:inherit;text-decoration:none}