*{box-sizing:border-box}
body{font:16px/1.6 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;max-width:880px;margin:0 auto;padding:0 18px 60px;color:#1c1c1c;background:#fff}
header{padding:22px 0 10px;border-bottom:1px solid #eee;margin-bottom:28px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px}
header a.logo{font-weight:700;font-size:1.2em;color:#1c1c1c;text-decoration:none}
nav a{color:#0a58ca;text-decoration:none;margin-left:16px;font-size:.95em}
h1{font-size:1.85em;line-height:1.25;margin-bottom:.3em}
h2{font-size:1.35em;margin-top:2em}
h3{font-size:1.1em;margin-top:1.4em}
.lead{font-size:1.15em;color:#444}
.badge{display:inline-block;background:#eef4ff;color:#0a58ca;padding:2px 10px;border-radius:12px;font-size:.85em;margin-bottom:12px}
table{border-collapse:collapse;width:100%;margin:1em 0}
th,td{border:1px solid #ddd;padding:8px 10px;text-align:left;font-size:.95em;vertical-align:top}
th{background:#f7f7f7}
.post{border:1px solid #e2e2e2;border-radius:10px;padding:16px;margin:16px 0;background:#fafafa}
.post h4{margin:0 0 6px;font-size:1em}
.post .tag{color:#0a58ca;font-size:.9em}
.hashtags{color:#666;font-size:.9em}
.price-box{border:2px solid #0a58ca;border-radius:12px;padding:22px;margin:24px 0;text-align:center;background:#f7faff}
.price-box .price{font-size:2em;font-weight:700;color:#0a58ca}
.btn{display:inline-block;background:#0a58ca;color:#fff;padding:14px 28px;border-radius:8px;text-decoration:none;font-weight:600;margin-top:12px}
.btn:hover{background:#08469c}
.notice{font-size:.85em;color:#555;margin-top:10px}
.grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:20px 0}
.grid a{display:block;border:1px solid #e2e2e2;border-radius:10px;padding:16px;text-decoration:none;color:#1c1c1c}
.grid a:hover{border-color:#0a58ca}
.grid strong{color:#0a58ca}
footer{margin-top:50px;padding-top:16px;border-top:1px solid #eee;font-size:.85em;color:#777}
footer a{color:#777}
.kihint{background:#fff8e1;border:1px solid #f0dca0;border-radius:8px;padding:10px 14px;font-size:.9em;margin:16px 0}
@media(max-width:600px){.grid{grid-template-columns:1fr}}