:root{--paper:#F2F5FA;--card:#FFFFFF;--ink:#15223D;--muted:#5A6580;--line:#D7DEEA;--coin:#E3A21A;--coin-ink:#8A5C00;--coin-soft:#FCF1D8;--blue:#2D56CC;
--f-display:"Dela Gothic One","Hiragino Sans","Yu Gothic",sans-serif;--f-body:"Zen Kaku Gothic New","Hiragino Sans","Yu Gothic","Meiryo",sans-serif;color-scheme:light}
@media (prefers-color-scheme:dark){:root{--paper:#0E1525;--card:#172139;--ink:#E9EEF8;--muted:#9CA8C2;--line:#2A3757;--coin:#F2B73A;--coin-ink:#F5C55C;--coin-soft:#3A3018;--blue:#86A3FF;color-scheme:dark}}
*{box-sizing:border-box}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--f-body);font-size:17px;line-height:1.9;
 padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
a{color:var(--blue)}
a:focus-visible{outline:3px solid var(--blue);outline-offset:2px}
.top{max-width:720px;margin:0 auto;padding-block:16px;display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;border-bottom:1px solid var(--line)}
.logo{font-family:var(--f-display);font-size:18px;color:var(--ink);text-decoration:none}
.top nav{display:flex;gap:16px;font-size:14px;font-weight:700}
.top nav a{color:var(--ink);text-decoration:none}
main{max-width:720px;margin:0 auto;padding-block:32px 48px}
.crumb{font-size:13px;color:var(--muted)}
.crumb a{color:var(--muted)}
h1,h2,h3{font-family:var(--f-display);font-weight:400;line-height:1.4;text-wrap:balance}
h1{font-size:clamp(26px,6vw,36px);margin:8px 0 12px}
h2{font-size:22px;margin:40px 0 8px;padding-top:12px;border-top:2px solid var(--ink)}
h3{font-size:18px;margin:24px 0 4px}
.lead{color:var(--muted)}
p{margin:0 0 1em}
ul{padding-left:1.4em}
li{margin-bottom:.4em}
.calc{background:var(--coin-soft);border-left:4px solid var(--coin);border-radius:4px 8px 8px 4px;padding:14px 18px;margin:0 0 1em;font-variant-numeric:tabular-nums}
.calc p{margin:0}
.cta{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px 22px;margin-top:40px;display:flex;flex-direction:column;gap:10px}
.cta b{font-family:var(--f-display);font-weight:400;font-size:19px}
.btn{align-self:flex-start;display:inline-block;background:var(--coin);color:#2A1C00;border-radius:999px;padding:12px 26px;font-weight:700;text-decoration:none}
.list{display:grid;gap:12px;padding:0;list-style:none}
.list a{display:block;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px 18px;text-decoration:none;color:var(--ink)}
.list a b{display:block;font-size:17px;line-height:1.5}
.list a span{display:block;font-size:14px;color:var(--muted);line-height:1.6;margin-top:4px}
.list a:hover{border-color:var(--ink)}
.coins{display:flex;gap:8px;margin:4px 0}
.coins span{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;font-family:var(--f-display);font-size:16px;background:radial-gradient(circle at 35% 30%,#FFE39A,#E3A21A 55%,#B67C08);color:#5A3B00}
.axis{display:grid;grid-template-columns:auto 1fr;gap:6px 14px;margin:0 0 1em}
.axis dt{font-weight:700}
.axis dd{margin:0;color:var(--muted)}
.ceo{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.ceo div{border-top:3px solid var(--ink);padding-top:8px;min-width:0}
.ceo b{font-family:var(--f-display);font-weight:400;font-size:19px;display:block}
.ceo small{color:var(--muted);display:block}
@media (max-width:540px){.ceo{grid-template-columns:1fr}}
.shops{display:flex;gap:8px;flex-wrap:wrap}
.shop{display:inline-block;border-radius:8px;padding:8px 16px;font-weight:700;font-size:14px;text-decoration:none;color:#fff}
.shop.amz{background:#E47911}.shop.rkt{background:#BF0000}
.pr{display:inline-block;font-size:11px;font-weight:700;letter-spacing:.08em;border:1px solid var(--muted);color:var(--muted);border-radius:4px;padding:0 6px;margin-left:8px;vertical-align:3px;font-family:var(--f-body)}
.note{font-size:13px;color:var(--muted)}
footer{max-width:720px;margin:0 auto;padding-block:24px 40px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);display:flex;gap:16px;flex-wrap:wrap}
footer a{color:var(--muted)}