:root{
  --bg:#f7f3ee; --paper:#fffdfa; --ink:#2a2724; --sub:#6b635b; --line:#e4dbd0;
  --accent:#8a5a3c; --accent-soft:#f1e4d8; --night:#2f3442; --todo:#fff2a8;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"Hiragino Sans","Hiragino Kaku Gothic ProN","Noto Sans JP","Yu Gothic",Meiryo,sans-serif;line-height:1.95;font-size:16px;letter-spacing:.02em}
a{color:var(--accent)}
.site-head{background:var(--paper);border-bottom:1px solid var(--line);padding:14px 16px;display:flex;flex-wrap:wrap;gap:8px 20px;align-items:center;justify-content:space-between}
.brand{text-decoration:none;color:var(--ink);display:flex;align-items:baseline;gap:8px}
.brand-sub{font-size:12px;color:var(--sub)}
.brand-name{font-size:22px;font-weight:700;letter-spacing:.1em}
.site-nav{display:flex;flex-wrap:wrap;gap:4px 14px;font-size:14px}
.site-nav a{text-decoration:none;color:var(--sub)}
.site-nav a[aria-current=page]{color:var(--accent);font-weight:700}
main{max-width:720px;margin:0 auto;padding:24px 16px 56px}
.hero{background:var(--night);color:#f3eee8;border-radius:14px;padding:40px 22px;margin:8px 0 32px}
.hero h1{font-size:26px;line-height:1.6;margin:0 0 16px;font-weight:700}
.hero p{margin:0 0 10px;color:#ddd5cc}
.hero .tag{display:inline-block;font-size:12px;border:1px solid #8c8679;border-radius:99px;padding:2px 12px;margin-bottom:14px;color:#cfc6bb}
h1{font-size:24px;line-height:1.6}
h2{font-size:20px;margin:44px 0 12px;padding-bottom:6px;border-bottom:1px solid var(--line)}
h3{font-size:17px;margin:28px 0 8px}
.box{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:18px 18px;margin:18px 0}
.box.warm{background:var(--accent-soft);border-color:#e6d2bf}
ul.points{padding-left:1.2em}
ul.points li{margin:6px 0}
ol.steps{padding-left:1.4em}
ol.steps li{margin:10px 0}
.btn{display:inline-block;background:var(--accent);color:#fff;text-decoration:none;padding:12px 26px;border-radius:99px;font-weight:700;margin:10px 0}
.btn.ghost{background:transparent;color:var(--accent);border:1px solid var(--accent)}
.small{font-size:14px;color:var(--sub)}
table{border-collapse:collapse;width:100%;font-size:14px;background:var(--paper)}
th,td{border:1px solid var(--line);padding:10px 8px;vertical-align:top;text-align:left}
th{background:#efe7dd;font-weight:700}
.table-wrap{overflow-x:auto;margin:16px 0}
.table-wrap table{min-width:560px}
details{background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:12px 16px;margin:10px 0}
summary{cursor:pointer;font-weight:700}
.check li{list-style:none;position:relative;padding-left:1.6em;margin:8px 0}
.check li::before{content:"□";position:absolute;left:0;color:var(--accent)}
form .field{margin:16px 0}
form label{display:block;font-weight:700;margin-bottom:4px}
form input[type=text],form input[type=email],form textarea,form select{width:100%;padding:10px;border:1px solid var(--line);border-radius:8px;font:inherit;background:#fff}
form textarea{min-height:120px}
form .agree label{font-weight:400;display:flex;gap:8px;align-items:flex-start}
mark.todo{background:var(--todo);padding:1px 4px;border-radius:4px}
.site-foot{border-top:1px solid var(--line);background:var(--paper);padding:24px 16px;text-align:center;font-size:13px;color:var(--sub)}
.site-foot p{margin:6px 0}
.copy{letter-spacing:.15em}
@media (min-width:760px){.hero{padding:56px 44px}.hero h1{font-size:30px}}