:root{--red:#b91c1c;--black:#1a1a1a;--grey:#666;--line:#ddd;--bg:#f4f4f4;--card:#fff}
*{box-sizing:border-box}
body{margin:0;font-family:"Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;font-size:18px;line-height:1.85;color:var(--black);background:var(--bg)}
a{color:var(--red);text-decoration:none}
a:hover{text-decoration:underline}
.site-header{position:sticky;top:0;z-index:20;background:#111;color:#fff}
.site-header .inner{max-width:1080px;margin:0 auto;padding:14px 20px;display:flex;flex-wrap:wrap;gap:10px 22px;align-items:center}
.logo{font-weight:800;font-size:24px;color:#fff;letter-spacing:.04em}
.logo span{color:#f87171}
.main-nav{display:flex;flex-wrap:wrap;gap:6px 18px;font-size:16px}
.main-nav a{color:#fff}
.wrap{max-width:1080px;margin:0 auto;padding:28px 20px 56px}
.hero{background:#e5e5e5;border-radius:14px;padding:44px 28px;margin-bottom:28px}
.hero h1{font-size:34px;line-height:1.4;margin:0 0 12px}
.hero p{margin:0;color:#333;max-width:720px}
h1.page{font-size:30px;line-height:1.45;margin:8px 0 6px}
h2.sec{font-size:24px;border-left:6px solid var(--red);padding-left:12px;margin:36px 0 16px}
.lead{color:#333}
.tag{display:inline-block;background:var(--red);color:#fff;font-size:13px;font-weight:700;padding:2px 10px;border-radius:999px;margin-right:8px;vertical-align:middle}
.tag.grey{background:#444}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:20px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px}
.card h3{margin:0 0 8px;font-size:20px}
.card p{margin:0 0 10px;font-size:16px;color:#333}
.card .more{font-weight:700;font-size:16px}
.sign-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:14px}
.sign-chip{background:#fff;border:1px solid var(--line);border-radius:10px;padding:14px;text-align:center;font-weight:700}
.article{background:#fff;border:1px solid var(--line);border-radius:12px;padding:28px}
.article h3{font-size:20px;margin:26px 0 8px;border-bottom:2px solid #eee;padding-bottom:6px}
.article p{margin:0 0 14px}
.basis{background:#fafafa;border:1px solid var(--line);border-radius:12px;padding:20px 24px;margin:28px 0}
.basis h2{font-size:21px;margin-top:0}
.notice{background:#fff7f7;border:1px solid #e5b4b4;border-radius:12px;padding:18px 22px;margin:24px 0}
footer{background:#111;color:#ccc;margin-top:40px}
footer .inner{max-width:1080px;margin:0 auto;padding:28px 20px;font-size:15px}
footer a{color:#fff}
.muted{color:var(--grey);font-size:15px}
@media(max-width:640px){body{font-size:17px}.hero h1{font-size:27px}h1.page{font-size:26px}.article{padding:20px}}