:root{--navy:#173f73;--ink:#182230;--muted:#667085;--line:#dfe5ed;--bg:#f5f7fa}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--ink);font-family:"Noto Sans JP","Yu Gothic","Meiryo",sans-serif}
a{color:var(--navy)}
header{background:var(--navy);color:#fff;padding:18px 20px}
header .inner{max-width:900px;margin:auto;display:flex;justify-content:space-between;gap:12px;align-items:center}
header strong{font-size:18px} header a{color:#fff;font-size:12px}
main{max-width:900px;margin:24px auto;padding:0 14px 60px}
.doc{background:#fff;border:1px solid var(--line);border-radius:14px;padding:26px;box-shadow:0 5px 24px rgba(25,44,70,.05)}
h1{font-size:24px;color:var(--navy);margin:0 0 8px}h2{font-size:17px;color:var(--navy);margin:28px 0 9px;padding-bottom:6px;border-bottom:1px solid var(--line)}
p,li,td,th{font-size:13px;line-height:1.8}ul,ol{padding-left:22px}
.meta{font-size:11px;color:var(--muted);margin-bottom:18px}
.draft{padding:11px 12px;border-radius:9px;background:#fff4dd;color:#805f00;font-size:12px;line-height:1.6;margin-bottom:18px}
.info{padding:11px 12px;border-radius:9px;background:#eef5fc;color:#244e78;font-size:12px;line-height:1.6}
table{width:100%;border-collapse:collapse;margin:12px 0}th,td{border:1px solid var(--line);padding:9px 10px;vertical-align:top}th{width:28%;background:#f7f9fc;text-align:left}
.prices{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
.price{border:1px solid var(--line);border-radius:9px;padding:10px 11px;background:#fbfcfe}
.price strong{display:block;color:var(--navy)}
.nav{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px;padding-top:14px;border-top:1px solid var(--line);font-size:11px}
.form{display:grid;gap:10px;margin-top:14px}.form input,.form textarea{width:100%;border:1px solid #cdd6e1;border-radius:8px;padding:10px;font:inherit}.form textarea{min-height:100px;resize:vertical}.form button{min-height:44px;border:0;border-radius:9px;background:var(--navy);color:#fff;font-weight:900}.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.msg{padding:10px;border-radius:8px;background:#eef5fc;font-size:12px;display:none}.msg.show{display:block}.msg.error{background:#fff0f0;color:#a52424}
@media(max-width:650px){.doc{padding:18px 15px}.prices{grid-template-columns:1fr}th{width:34%}header .inner{align-items:flex-start;flex-direction:column}}