:root{
  --bg:#FFFFFF; --bg2:#F7F6F3; --ink:#171717; --sub:#5C636B; --line:#E4E2DC;
  --red:#C8102E; --red-dark:#A50D26; --red-soft:#FBEDEF; --gold:#E0A800; --gold-soft:#FFF6D9; --green:#1F7A4D;
  --font:"Noto Sans JP","Noto Sans CJK JP","Hiragino Kaku Gothic ProN","Hiragino Sans","Yu Gothic UI","Yu Gothic","YuGothic","Meiryo","BIZ UDPGothic",sans-serif;
  --wrap:1120px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.8;-webkit-text-size-adjust:100%;font-feature-settings:"palt";overflow-x:hidden}
img{max-width:100%}
a{color:inherit}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
.narrow{max-width:820px}
.skip{position:absolute;left:-999px}
.skip:focus{left:8px;top:8px;background:#fff;padding:8px;z-index:100}
.small{font-size:12.5px;color:var(--sub)}
header{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
header .wrap{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:800;font-size:18px;letter-spacing:.02em}
.brand img{display:block;border-radius:7px}
.brand small{display:block;font-size:10px;font-weight:600;color:var(--sub);letter-spacing:.14em;line-height:1}
.tm{font-size:.5em;vertical-align:super;margin-left:1px;font-weight:700}
header nav{margin-left:auto;display:flex;gap:18px;font-size:13px;font-weight:600}
header nav a{text-decoration:none;opacity:.8}
header nav a:hover{opacity:1;color:var(--red)}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 20px;border-radius:999px;font-weight:700;text-decoration:none;font-size:14px;border:1.5px solid var(--ink);color:var(--ink);background:#fff;transition:transform .15s ease,background .15s ease;cursor:pointer;font-family:inherit}
.btn:hover{transform:translateY(-1px)}
.btn.primary{background:var(--red);border-color:var(--red);color:#fff}
.btn.primary:hover{background:var(--red-dark)}
.btn.small{padding:9px 14px;font-size:13px}
@media (max-width:860px){header nav{display:none}header .btn{margin-left:auto}}

.hero{background:linear-gradient(180deg,#FFF 0%,var(--bg2) 100%);border-bottom:1px solid var(--line);padding:60px 0 56px}
.hero .wrap{display:grid;grid-template-columns:1.1fr 1fr;gap:44px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--red);margin:0 0 14px}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--red)}
h1{font-size:clamp(28px,3.6vw,46px);line-height:1.25;margin:0 0 16px;word-break:keep-all;overflow-wrap:anywhere}
h1 .accent{color:var(--red)}
.lead{font-size:16.5px;color:#333;margin:0 0 18px}
.tags{display:flex;flex-wrap:wrap;gap:8px;list-style:none;margin:0 0 24px;padding:0;font-size:12.5px}
.tags li{border:1px solid var(--line);background:#fff;border-radius:999px;padding:5px 12px;color:var(--sub)}
.cta{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.cta .note{font-size:12px;color:var(--sub);width:100%;margin:4px 0 0}
.hero-board{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;box-shadow:0 20px 40px rgba(0,0,0,.08)}
.hb-card{border:1px solid var(--line);border-left:4px solid var(--red);border-radius:10px;padding:14px 16px}
.hb-k{font-size:11px;font-weight:700;color:var(--red);letter-spacing:.1em}
.hb-t{font-weight:700;font-size:16px;margin:2px 0}
.hb-m{font-size:12.5px;color:var(--sub)}
.hb-chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.hb-chips span{font-size:11px;background:var(--bg2);border-radius:999px;padding:2px 9px}
.hb-arrow{text-align:center;font-size:12px;font-weight:700;color:var(--sub);margin:10px 0}
.hb-arrow::before{content:"↓ ";color:var(--red)}
.hb-bids{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.hb-bid{border:1px solid var(--line);border-radius:10px;padding:10px;font-size:12px;display:flex;flex-direction:column;gap:2px;position:relative}
.hb-bid b{font-size:13px}
.hb-bid span{font-weight:800;font-size:15px}
.hb-bid i{font-style:normal;color:var(--sub);font-size:11px}
.hb-bid.pick{border:2px solid var(--red);background:var(--red-soft)}
.hb-bid em{font-style:normal;font-size:10.5px;font-weight:700;color:#fff;background:var(--red);border-radius:999px;padding:1px 8px;align-self:flex-start;margin-top:4px}
.hb-note{font-size:12px;color:var(--sub);margin-top:12px}
@media (max-width:960px){.hero .wrap{grid-template-columns:1fr}}
@media (max-width:440px){.hb-bids{grid-template-columns:1fr}}

section{padding:72px 0}
section.bg2{background:var(--bg2)}
.sec-k{font-size:12px;font-weight:700;letter-spacing:.18em;color:var(--red);margin:0 0 6px}
h2{font-size:clamp(22px,2.6vw,32px);line-height:1.35;margin:0 0 24px}
h3{font-size:17px;margin:0 0 8px}
.two{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.two.wide{align-items:center;gap:44px}
.card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px}
.card ul{margin:0 0 10px;padding-left:1.2em}
.card li{margin:4px 0}
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.steps li{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;position:relative}
.steps b{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:50%;background:var(--red);color:#fff;font-size:14px;margin-bottom:8px}
.steps p{margin:0;font-size:14px;color:#333}
.reason{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:0 14px 30px rgba(0,0,0,.06)}
.reason-h{background:var(--red);color:#fff;font-weight:700;padding:10px 18px;font-size:14px}
.reason dl{margin:0;padding:14px 18px;display:grid;grid-template-columns:7em 1fr;gap:8px 12px;font-size:14px}
.reason dt{color:var(--sub)}
.reason dd{margin:0}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.grid3 p{margin:0;font-size:14px;color:#333}
.st{display:inline-block;font-size:11px;font-weight:700;border-radius:999px;padding:2px 10px;margin-bottom:8px}
.st.on{background:#E6F4EC;color:var(--green)}
.st.soon{background:var(--gold-soft);color:#8A6500}
.st.plan{background:#EEF0F2;color:var(--sub)}
details{border-bottom:1px solid var(--line);padding:14px 0}
summary{font-weight:700;cursor:pointer}
details p{margin:8px 0 0;color:#333}
.cta-band{background:var(--red);color:#fff;text-align:center}
.cta-band p{opacity:.9}
.cta-band .btn.primary{background:#fff;color:var(--red);border-color:#fff}
footer{border-top:1px solid var(--line);padding:32px 0;font-size:13px;color:var(--sub)}
footer .brand{color:var(--ink);font-size:15px;margin-bottom:8px}
@media (max-width:860px){.two,.steps,.grid3{grid-template-columns:1fr}.two.wide{gap:24px}section{padding:52px 0}}
.family-bar{background:#F7F7F5;border-bottom:1px solid #E6E6E3;font:12px/1 "Noto Sans JP","Hiragino Kaku Gothic ProN","Yu Gothic UI","Meiryo",sans-serif;color:#5C636B}
.family-bar .fb-in{max-width:1200px;margin:0 auto;padding:0 24px;height:32px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.family-bar a{color:#5C636B;text-decoration:none}
.family-bar a:hover{color:#C8102E;text-decoration:underline}
.family-bar .fb-crumb{display:flex;gap:6px;list-style:none;margin:0;padding:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.family-bar .fb-crumb li+li::before{content:"›";margin-right:6px;color:#A0A4A8}
.family-bar .fb-crumb [aria-current]{color:#1F2328;font-weight:600}
.family-bar .fb-others{display:flex;gap:14px;white-space:nowrap}
.family-bar .fb-others span{color:#A0A4A8}
@media (max-width:720px){.family-bar .fb-others{display:none}.family-bar .fb-in{padding:0 14px}}