@font-face{font-family:Inter;src:url(inter.woff2) format("woff2");font-weight:100 900;font-display:swap}
:root{--bg:#0B0B0C;--ink:#FFFFFF;--dim:#B4B8BF;--faint:#7A7F87;--paper:#F7F4EC;--paperInk:#111;--paperDim:#55524B;--gold:#FFC531;--card:#151619;--line:#2A2C30;color-scheme:dark}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;background:var(--bg)}
body{margin:0;background:var(--bg);color:var(--ink);font:19px/1.6 Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;overflow-x:hidden}
main{max-width:680px;margin:0 auto;padding:0 16px 64px}
a{color:inherit;text-underline-offset:3px}
p{margin:.6em 0}
h1{font-size:2em;line-height:1.1;font-weight:900;letter-spacing:-.02em;margin:.5em 0 .3em}
h2{font-size:1.3em;font-weight:900;margin:1.8em 0 .6em}
.top{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:18px 0 6px}
.brand{font-weight:900;letter-spacing:.14em;font-size:.82em;text-decoration:none;text-transform:uppercase;white-space:nowrap}
.brand b{color:var(--gold)}
.tag{font-weight:800;letter-spacing:.06em;font-size:.8em;color:var(--dim);text-transform:uppercase;white-space:nowrap}
.lede{font-size:1.12em;font-weight:600}
.small{font-size:.86em;color:var(--dim)}
.notadvice{font-weight:800;border:2px solid var(--line);border-radius:14px;padding:12px 14px;text-align:center}
.receipt{background:var(--paper);color:var(--paperInk);border-radius:16px;padding:18px 20px;margin:16px 0;box-shadow:0 18px 50px rgba(0,0,0,.5)}
.receipt .head{display:flex;justify-content:space-between;gap:10px;align-items:center;border-bottom:3px solid var(--paperInk);padding-bottom:8px;font-weight:900;font-size:.78em;letter-spacing:.08em;flex-wrap:wrap}
.receipt .from{background:var(--gold);color:#111;border-radius:6px;padding:2px 8px;font-weight:800;letter-spacing:0;white-space:nowrap}
.receipt dl{margin:0}
.receipt .row{display:flex;justify-content:space-between;gap:14px;padding:8px 0;border-bottom:2px dashed #CFCABD}
.receipt dt{color:var(--paperDim);font-weight:600;white-space:nowrap}
.receipt dd{margin:0;font-weight:800;text-align:right}
.receipt .foot{font-size:.8em;color:var(--paperDim);padding-top:8px}
.stamp{display:inline-block;color:var(--gold);border:4px solid var(--gold);border-radius:12px;padding:2px 14px;font-weight:900;letter-spacing:.06em;transform:rotate(-3deg);margin:6px 0}
.math{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:14px 16px;margin:12px 0;overflow-wrap:anywhere}
.math table{width:100%;border-collapse:collapse;font-variant-numeric:tabular-nums}
.math td{padding:6px 0;border-bottom:1px solid var(--line);vertical-align:top}
.math td:last-child{text-align:right;font-weight:800}
.board{display:flex;gap:12px}
.board>div{flex:1;border:2px solid var(--ink);border-radius:16px;padding:14px;text-align:center}
.board .n{font-size:2.6em;font-weight:900;line-height:1.1}
.board .v{font-size:1.4em;font-weight:900;color:var(--gold)}
.list a{display:block;padding:12px 0;border-bottom:1px solid var(--line);text-decoration:none}
.list small{color:var(--dim);display:block}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:14px 16px;margin:16px 0}
.paidlink{margin:12px 0}.paidlink .btn{display:inline-block;margin:0 8px 0 0}
.paid{font-size:.78em;font-weight:800;letter-spacing:.06em;text-transform:uppercase;border:1px solid var(--dim);border-radius:6px;padding:1px 6px;color:var(--dim)}
.btn{display:block;text-align:center;border:2px solid var(--ink);border-radius:14px;padding:14px 16px;font-weight:800;text-decoration:none;margin:12px 0}
input[type=email]{width:100%;font:inherit;padding:12px;border-radius:12px;border:2px solid var(--line);background:var(--card);color:var(--ink)}
footer{margin-top:56px;padding-top:18px;border-top:1px solid var(--line);font-size:.86em;color:var(--dim)}
footer a{color:var(--ink)}
@media (min-width:760px){body{font-size:20px}h1{font-size:2.4em}}