:root{--ink:#2B3340;--ink2:#7B8593;--accent:#23B5AC;--deep:#168F88;--soft:#E4F7F4;--line:#EEF2F5;--mint:#7FE0C4;--sky:#8FC4FF;}
*{box-sizing:border-box;}
body{font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Noto Sans JP",sans-serif;color:var(--ink);line-height:1.9;margin:0;}
.wrap{max-width:680px;margin:0 auto;padding:0 20px;}
.wrap.wide{max-width:760px;}
a{color:var(--deep);}
header.top{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--line);max-width:760px;margin:0 auto;}
.logo{font-family:'Quicksand',sans-serif;font-weight:700;font-size:24px;color:var(--ink);text-transform:lowercase;letter-spacing:.01em;}
.nav a{margin-left:16px;font-size:13px;font-weight:600;color:var(--ink2);text-decoration:none;}
/* hub */
.hero{text-align:center;padding:48px 20px 26px;background:linear-gradient(160deg,#F3FBFA,#fff);}
.hero h1{font-size:28px;line-height:1.4;margin:0 0 12px;}
.hero p{font-size:15.5px;color:var(--ink2);max-width:540px;margin:0 auto;}
.cards{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:34px 0;}
@media(max-width:560px){.cards{grid-template-columns:1fr;}.hero h1{font-size:24px;}article h1{font-size:23px;}}
.card{display:block;background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;text-decoration:none;color:var(--ink);box-shadow:0 12px 26px -20px rgba(70,120,150,.34);transition:transform .15s ease,box-shadow .15s ease;}
.card:hover{transform:translateY(-2px);box-shadow:0 18px 34px -20px rgba(70,120,150,.45);}
.tag{display:inline-block;font-size:11.5px;font-weight:700;color:var(--deep);background:var(--soft);padding:3px 10px;border-radius:999px;}
.card h2{font-size:17px;margin:12px 0 8px;line-height:1.5;}
.card p{font-size:13.5px;color:var(--ink2);margin:0;}
/* article */
.crumb{font-size:12.5px;color:var(--ink2);margin:22px 0 0;}
.crumb a{text-decoration:none;}
article h1{font-size:27px;line-height:1.45;margin:10px 0 10px;}
.meta{font-size:12.5px;color:var(--ink2);margin:0 0 8px;}
article .lead{font-size:16px;color:#48515E;border-left:3px solid var(--accent);padding:2px 0 2px 16px;margin:22px 0 30px;}
article h2{font-size:20px;margin:38px 0 10px;padding-bottom:8px;border-bottom:1px solid var(--line);}
article h3{font-size:16.5px;margin:24px 0 6px;color:var(--deep);}
article p{margin:0 0 16px;}
article ul{padding-left:1.2em;margin:0 0 16px;}
article li{margin:6px 0;}
.note{background:#F3FBFA;border-radius:14px;padding:16px 18px;font-size:14px;color:#48515E;margin:24px 0;}
/* shared */
.band{background:#F3FBFA;border-radius:18px;padding:24px;text-align:center;margin:44px 0;}
.band h2{border:0;margin:0 0 8px;padding:0;font-size:19px;}
.band .lead{border:0;padding:0;color:var(--ink2);margin:0 auto 16px;max-width:470px;font-size:14.5px;}
.ctas a{display:inline-block;text-decoration:none;font-weight:700;padding:13px 24px;border-radius:12px;margin:6px;}
.cta-main{background:var(--accent);color:#fff;}
.cta-sub{background:#fff;color:var(--deep);border:1.5px solid var(--accent);}
.related{margin:34px 0;}
.related strong{font-size:14px;}
.related a{display:block;padding:12px 0;border-bottom:1px dashed var(--line);text-decoration:none;color:var(--ink);font-weight:600;font-size:14.5px;}
footer{border-top:1px solid var(--line);margin-top:50px;padding:28px 20px 60px;color:var(--ink2);font-size:13px;}
.footnav{max-width:760px;margin:0 auto 14px;display:flex;flex-wrap:wrap;gap:14px;}
.footnav a{color:var(--deep);text-decoration:none;font-weight:600;}
.fcopy{max-width:760px;margin:0 auto;color:var(--ink2);}