:root{
  --paper:#F4F6F5;
  --ink:#1B2430;
  --sub:#56616E;
  --indigo:#27457A;
  --moss:#4E7D5B;
  --line:#D3DADD;
  --card:#FFFFFF;
  --edge:#AEB9BF;
}
@media (prefers-color-scheme:dark){
  :root{
    --paper:#131A22;
    --ink:#E6EBEF;
    --sub:#A3AEB9;
    --indigo:#8FB0E6;
    --moss:#8CC29C;
    --line:#2C3743;
    --card:#1A232D;
    --edge:#4A5967;
  }
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:-apple-system,"Hiragino Sans","Hiragino Kaku Gothic ProN","Noto Sans JP",sans-serif;
  font-size:17px;line-height:1.85;
}
a{color:var(--indigo);text-underline-offset:3px}
a:focus-visible{outline:3px solid var(--moss);outline-offset:2px;border-radius:2px}
.wrap{max-width:680px;margin:0 auto;padding:0 20px}
header.site{padding:28px 0 0}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px}
.mark{display:inline-flex;align-items:baseline;gap:2px;text-decoration:none;color:var(--ink);
  font-family:"Bricolage Grotesque",-apple-system,"Hiragino Sans","Hiragino Kaku Gothic ProN","Noto Sans JP",sans-serif;font-weight:700;font-size:22px;letter-spacing:-.01em}
.mark .at{display:inline-grid;place-items:center;width:1.25em;height:1.25em;border-radius:50%;
  background:var(--indigo);color:var(--paper);font-size:.8em;transform:translateY(.12em);margin:0 1px}
nav.site a{color:var(--sub);text-decoration:none;font-size:16px;margin-left:18px}
nav.site a:hover{color:var(--ink)}
.hero{padding:64px 0 40px}
.hero .big{font-family:"Bricolage Grotesque",sans-serif;font-weight:800;
  font-size:clamp(64px,18vw,140px);line-height:.9;letter-spacing:-.04em;margin:0;color:var(--ink)}
.hero .big .at{color:var(--indigo)}
.hero p{max-width:30em;color:var(--sub);margin:24px 0 0;font-size:18px}
h1{font-size:30px;line-height:1.35;margin:48px 0 8px;letter-spacing:.01em}
h2{font-size:21px;line-height:1.45;margin:44px 0 8px;padding-top:20px;border-top:1px solid var(--line)}
h3{font-size:17px;margin:24px 0 4px}
p,li{max-width:38em}
ul{padding-left:1.2em}
.meta{color:var(--sub);font-size:16px;margin:0}
.apps{list-style:none;padding:0;margin:8px 0 0}
.apps li{max-width:none;display:grid;grid-template-columns:1fr auto;gap:4px 16px;align-items:baseline;
  padding:18px 0;border-bottom:1px solid var(--line)}
.apps .name{font-weight:700;font-size:18px}
.apps .desc{grid-column:1/-1;color:var(--sub);font-size:17px;margin:0}
.apps .links{font-size:14px}
.apps .links a{margin-left:12px}
.contact{background:var(--card);border:1px solid var(--line);border-left:4px solid var(--moss);
  border-radius:6px;padding:20px 22px;margin:20px 0}
.contact .addr{font-size:20px;font-weight:700;word-break:break-all}
dl.data{margin:8px 0}
dl.data dt{font-weight:700;margin-top:14px}
dl.data dd{margin:2px 0 0;color:var(--ink)}
footer.site{margin-top:72px;padding:28px 0 40px;border-top:1px solid var(--line);color:var(--sub);font-size:16px}
footer.site .wrap{display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between}
footer.site a{color:var(--sub)}
.policy ul{margin:8px 0 0}
.policy li{margin:4px 0}
.items{margin:16px 0}
.item{background:var(--card);border:1.5px solid var(--edge);border-radius:10px;padding:16px 18px;margin:0 0 12px}
.item h3{font-size:18px;line-height:1.6;margin:0 0 10px}
.item dl{margin:0;display:grid;grid-template-columns:auto 1fr;gap:6px 14px}
.item dt{color:var(--sub);font-size:16px;white-space:nowrap;padding-top:1px}
.item dd{margin:0}
@media (max-width:480px){.item dl{grid-template-columns:1fr;gap:0}.item dd{margin:0 0 8px}.item dd:last-child{margin:0}}
.policy a{word-break:break-all}
@media (max-width:480px){
  nav.site a{margin-left:12px;font-size:16px}
  h1{font-size:26px}
}