*{box-sizing:border-box;margin:0;padding:0}
:root{--ink:#22201f;--muted:#6a6360;--line:#eee2e0;--bg:#fffafa;--card:#fff;--brand:#d80621;--brand2:#2b6cb0;--soft:#fdeef0;--soft2:#eef4fb;--warn:#fff5e6;--warnln:#e8c58a}
html{-webkit-text-size-adjust:100%}
body{font-family:-apple-system,"Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;color:var(--ink);background:var(--bg);line-height:1.85;font-size:16px}
.adbar{background:#2a2422;color:#fff;font-size:12px;text-align:center;padding:6px 12px}
.adbar a{color:#ffc9d0}
nav.site{background:var(--card);border-bottom:3px solid var(--brand);position:sticky;top:0;z-index:20}
nav.site .inner{max-width:980px;margin:0 auto;padding:10px 16px;display:flex;flex-wrap:wrap;align-items:center;gap:6px 14px}
nav.site .brand{font-weight:800;color:var(--brand);text-decoration:none;font-size:17px}
nav.site .brand .leaf{margin-right:4px}
nav.site .links{display:flex;flex-wrap:wrap;gap:4px 14px;font-size:13px}
nav.site .links a{color:var(--muted);text-decoration:none}
nav.site .links a:hover{color:var(--brand)}
.container{max-width:840px;margin:0 auto;padding:22px 16px 60px}
.hero{padding:14px 0 10px}
.hero h1{font-size:26px;line-height:1.4}
.hero p{color:var(--muted);margin-top:10px}
article h2{font-size:20px;margin:30px 0 10px;padding-left:11px;border-left:5px solid var(--brand)}
article h3{font-size:17px;margin:22px 0 8px}
article p{margin:10px 0}
article ul,article ol{margin:10px 0 10px 22px}
article li{margin:5px 0}
a{color:#c1051d}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px;margin:16px 0}
.tool{background:var(--soft);border:1px solid #f4d3d8;border-radius:16px;padding:18px;margin:18px 0}
.tool label{display:block;font-weight:700;font-size:14px;margin:12px 0 5px}
.tool select,.tool input{width:100%;padding:11px 12px;font-size:16px;border:1px solid #e0cdd0;border-radius:10px;background:#fff}
.tool .row{display:flex;gap:12px;flex-wrap:wrap}
.tool .row>div{flex:1;min-width:150px}
.btn{display:inline-block;background:var(--brand);color:#fff;border:none;border-radius:10px;padding:12px 18px;font-size:15px;font-weight:700;cursor:pointer;text-decoration:none}
.btn:hover{background:#b1051b}
.result{background:#fff;border:1px solid #f4d3d8;border-radius:12px;padding:16px;margin-top:16px}
.result .big{font-size:24px;font-weight:800;color:var(--brand2)}
table{width:100%;border-collapse:collapse;margin:14px 0;font-size:14px}
th,td{border:1px solid var(--line);padding:9px 10px;text-align:left;vertical-align:top}
th{background:var(--soft);font-size:13px}
.note{background:var(--soft2);border:1px solid #cfe0f2;border-radius:10px;padding:12px 14px;margin:14px 0;font-size:14px}
.note.warn{background:var(--warn);border-color:var(--warnln)}
.muted{color:var(--muted)}
.small{font-size:13px}
.aff-box{background:var(--soft);border:1px dashed #e6a9b2;border-radius:12px;padding:14px 16px;margin:16px 0}
.aff-box .lead{font-size:14px;margin-bottom:8px}
.aff-note{font-size:12px;color:var(--muted);margin-top:6px}
.age-line{font-size:12px;font-weight:700;color:#b1051b;background:#fff;border:1px solid #e6a9b2;border-radius:6px;padding:3px 9px;display:inline-block;margin-bottom:8px}
.aff-slot{display:none}
.aff-slot.live{display:inline-block}
.aff-slot.live a{display:inline-block;background:var(--brand2);color:#fff;text-decoration:none;padding:10px 16px;border-radius:9px;font-weight:700;font-size:14px;margin:4px 6px 0 0}
.aff-slot.live a:hover{background:#245a94}
.related{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px 16px;margin:22px 0}
.faq-item{border-bottom:1px solid var(--line);padding:14px 0}
.faq-item:last-child{border-bottom:none}
.faq-item h3{font-size:16px;margin:0 0 6px}
.disclaimer{background:var(--warn);border:1px solid var(--warnln);border-radius:10px;padding:12px 14px;margin:18px 0;font-size:13px}
.timeline{margin:12px 0;border-left:3px solid var(--brand);padding-left:14px}
.timeline .step{position:relative;padding:8px 0}
.timeline .when{display:inline-block;font-size:12px;font-weight:700;background:var(--soft2);color:#245a94;border-radius:6px;padding:2px 9px;margin-right:6px}
footer{border-top:1px solid var(--line);margin-top:40px;padding:22px 0 0;color:var(--muted);font-size:13px}
footer a{color:var(--muted)}
@media(max-width:600px){.hero h1{font-size:22px}article h2{font-size:18px}}