:root{--navy:#102a4a;--blue:#1e6ebe;--lblue:#e8f1fa;--bg:#f6f9fc;--line:#dee5ed;--gray:#606c7c;--green:#06c755}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--navy);font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Hiragino Kaku Gothic ProN","Noto Sans JP",Meiryo,sans-serif;line-height:1.8;font-size:16px}
a{color:var(--blue)}
.top{background:var(--navy);padding:14px 16px}
.brand{color:#fff;text-decoration:none;font-weight:800;font-size:19px;letter-spacing:.02em}
.brand span{display:block;font-weight:500;font-size:12px;opacity:.8;letter-spacing:.05em}
.tabs{display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border-bottom:1px solid var(--line)}
.tabs a{display:flex;align-items:center;justify-content:center;padding:10px 4px;text-align:center;text-decoration:none;color:var(--gray);font-size:13px;line-height:1.35;font-weight:700;border-bottom:3px solid transparent}
.tabs a.on{color:var(--navy);border-bottom-color:var(--blue)}
main,footer{max-width:680px;margin:0 auto;padding:24px 16px}
h1{font-size:26px;line-height:1.4;margin:4px 0 10px}
h2{font-size:19px;margin:0 0 6px}
.lead{margin:0 0 20px}
figure{margin:0 0 20px}
figure img{display:block;width:100%;height:auto;border-radius:14px}
figcaption{font-size:12px;color:var(--gray);margin-top:6px}
.box,.day,.card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 18px;margin-bottom:12px}
.box figure{margin:6px 0 12px}
.day h2{color:var(--blue)}
.day p,.box p{margin:0 0 6px}
.small{font-size:13px;color:var(--gray)}
.cards{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:12px}
.card{display:block;margin:0;text-decoration:none;color:var(--navy)}
.card b{display:block;font-size:17px}
.card span{display:block;font-size:13px;color:var(--gray);line-height:1.6;margin-top:4px}
.steps{counter-reset:s;list-style:none;padding:0;margin:0 0 14px;display:grid;grid-template-columns:1fr 1fr;gap:8px}
.steps li{counter-increment:s;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 12px;font-weight:700;font-size:15px}
.steps li::before{content:counter(s);display:inline-flex;align-items:center;justify-content:center;width:24px;height:24px;border-radius:50%;background:var(--blue);color:#fff;font-size:13px;margin-right:8px}
.points{margin:0 0 20px;padding-left:20px}
.qa{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 18px;margin-bottom:12px}
.qa h2{font-size:17px;display:flex;gap:8px}
.qa h2::before{content:"Q.";color:var(--blue)}
.qa .ans{margin-top:8px;padding-left:26px;position:relative}
.qa .ans::before{content:"A.";color:var(--gray);font-weight:700;position:absolute;left:0;top:0}
.qa .ans p{margin:0 0 8px}
.qa .ans p:last-child{margin-bottom:0}
.guar{list-style:none;padding:0;margin:4px 0 10px}
.guar li{background:var(--bg);border-radius:10px;padding:10px 12px;margin-bottom:6px;font-size:15px;line-height:1.7}
.guar b{display:block;color:var(--blue);font-size:14px}
.btn{display:block;text-align:center;text-decoration:none;font-weight:800;font-size:17px;border-radius:999px;padding:15px 20px;margin:8px 0 16px}
.btn.line{background:var(--green);color:#fff}
.btn.sub{background:var(--navy);color:#fff}
footer{border-top:1px solid var(--line);padding-top:20px}
.ask{margin:0 0 4px;font-weight:700}
.mail{font-size:14px;margin:0 0 14px;word-break:break-all}
.note{font-size:12px;color:var(--gray);line-height:1.7}
.copy{font-size:12px;color:var(--gray);margin:16px 0 0}
@media (min-width:640px){.cards{grid-template-columns:1fr 1fr}.steps{grid-template-columns:1fr 1fr 1fr}}