:root{--bg:#f6f8f7;--surface:#fff;--ink:#1c1c1e;--muted:#5f6663;--tint:#0e7c70;--tint-soft:#e1f1ee;--line:#dde5e2;color-scheme:light}
@media (prefers-color-scheme:dark){:root{color-scheme:dark;--bg:#04201d;--surface:#0b2c28;--ink:#f2f5f4;--muted:#a9bab6;--tint:#34c7b5;--tint-soft:#12332f;--line:#1f4540}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:18px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;padding-inline:20px}
main{max-width:42rem;margin:0 auto;padding-block:48px 72px}
.app{color:var(--tint);font-weight:700}
h1{font-size:2.2rem;line-height:1.15;margin:16px 0 8px}
.muted{color:var(--muted)}
.box{background:var(--tint-soft);border-radius:20px;padding:20px 24px;margin:24px 0 40px}
.box p{margin:4px 0 0}
section,details{border-top:1px solid var(--line);padding-block:20px}
h2{font-size:1.25rem;margin:0 0 8px}
summary{cursor:pointer;font-weight:700}
ul,ol{padding-left:1.2em}
a{color:var(--tint)}
.mail{font-weight:700;user-select:all;overflow-wrap:anywhere}