:root{--red:#D7263D;--ink:#1B1B1E;--paper:#F7F1E3;--jade:#4E8F7A;--gold:#F2A541;--muted:#5b5b62;--line:#e4dccb;--max:760px}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font:17px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;color:var(--ink);background:#fff}
a{color:var(--red)}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
header.hero{background:var(--paper);border-bottom:1px solid var(--line);padding:48px 0 40px}
.eyebrow{text-transform:uppercase;letter-spacing:.12em;font-size:13px;color:var(--jade);font-weight:700;margin:0 0 8px}
h1{font-size:clamp(30px,6vw,44px);line-height:1.12;margin:0 0 14px}
h1 .yr{color:var(--red)}
.lead{font-size:19px;color:#333;margin:0 0 22px}
.facts{display:flex;flex-wrap:wrap;gap:8px;padding:0;margin:0 0 26px;list-style:none}
.facts li{background:#fff;border:1px solid var(--line);border-radius:999px;padding:4px 12px;font-size:14px}
.buy{display:inline-block;background:var(--red);color:#fff;text-decoration:none;font-weight:700;font-size:18px;padding:14px 26px;border-radius:10px}
.buy:hover,.buy:focus{background:#b81e31}
.price{font-weight:800;font-size:22px;margin-left:12px;vertical-align:middle}
.small{font-size:14px;color:var(--muted)}
section{padding:40px 0;border-bottom:1px solid var(--line)}
h2{font-size:26px;line-height:1.25;margin:0 0 16px}
h3{font-size:19px;margin:22px 0 8px}
ol.toc{padding-left:22px;columns:2;column-gap:32px}
@media (max-width:560px){ol.toc{columns:1}}
ol.toc li{break-inside:avoid;margin:0 0 4px}
.sample{background:#fff;border:1px solid var(--line);border-left:5px solid var(--jade);border-radius:8px;padding:6px 22px 18px;margin:20px 0 28px;box-shadow:0 1px 0 rgba(0,0,0,.03)}
.sample .tag{display:inline-block;margin-top:14px;font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--jade)}
.note{background:var(--paper);border-radius:6px;padding:10px 14px;font-size:15px}
.src{font-size:13px;color:var(--muted);word-break:break-word}
details{border:1px solid var(--line);border-radius:8px;padding:12px 16px;margin:0 0 10px}
summary{font-weight:700;cursor:pointer}
footer{padding:32px 0 96px;font-size:14px;color:var(--muted)}
.sticky{position:fixed;left:0;right:0;bottom:0;background:#fff;border-top:1px solid var(--line);padding:10px 16px;display:flex;justify-content:center;align-items:center;gap:14px;z-index:5}
.sticky .buy{font-size:16px;padding:10px 20px}