:root{--navy:#1f3a5f;--ink:#222;--sub:#666;--line:#dde2e8;--bg:#f5f7fa;--card:#fff;--accent:#2563c9}
*{box-sizing:border-box}
body{margin:0;font-family:"Hiragino Sans","Yu Gothic","Meiryo",sans-serif;color:var(--ink);background:var(--bg);line-height:1.7}
.wrap{max-width:880px;margin:0 auto;padding:0 16px}
a{color:var(--accent)}
header.site{background:var(--navy);color:#fff;padding:14px 0}
header.site .logo{color:#fff;text-decoration:none;font-weight:bold;font-size:18px}
header.site .logo span{font-weight:normal;font-size:14px;opacity:.85;margin-left:6px}
footer.site{margin-top:48px;padding:24px 0;border-top:1px solid var(--line);font-size:13px;color:var(--sub)}
footer.site a{margin-right:16px;color:var(--sub)}
.hero{padding:40px 0 16px}
.hero h1{font-size:30px;line-height:1.4;color:var(--navy);margin:0 0 12px}
h2{font-size:20px;color:var(--navy)}
.card{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:24px;margin:20px 0}
.card h1{font-size:22px;color:var(--navy);margin-top:0}
label{display:block;margin:14px 0;font-weight:bold;font-size:14px}
input[name=domain],input[type=email]{display:block;width:100%;margin-top:6px;padding:11px 12px;font-size:16px;border:1px solid #bbc3cd;border-radius:6px}
label.check{display:flex;gap:8px;font-weight:normal;align-items:flex-start}
label.check input{margin-top:6px}
button,.btn{display:inline-block;background:var(--accent);color:#fff;border:0;border-radius:6px;padding:12px 28px;font-size:16px;font-weight:bold;cursor:pointer;text-decoration:none}
button:hover,.btn:hover{opacity:.9}
.note,.meta{font-size:13px;color:var(--sub)}
.errors{background:#fdecea;border:1px solid #f5c2bd;color:#a12a1f;padding:12px 12px 12px 32px;border-radius:6px}
.hp{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:12px}
.feat{background:#fff;border:1px solid var(--line);border-radius:8px;padding:14px}
.feat h3{margin:0 0 6px;font-size:16px;color:var(--navy)}
.feat p{margin:0;font-size:14px}
.msg{text-align:center}
.total{display:flex;align-items:center;gap:20px;margin:16px 0}
.grade{width:84px;height:84px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:44px;font-weight:bold;color:#fff}
.grade.small{width:48px;height:48px;font-size:24px;margin:0 auto 4px}
.g-A{background:#27ae60}.g-B{background:#7cb342}.g-C{background:#e6a817}.g-D{background:#e67e22}.g-E{background:#c0392b}
.cats{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;text-align:center}
.cat{border:1px solid var(--line);border-radius:8px;padding:12px 4px}
.list{width:100%;border-collapse:collapse;font-size:14px}
.list th,.list td{border-bottom:1px solid var(--line);padding:9px 6px;text-align:left;vertical-align:top;word-break:break-all}
.list th{background:#f3f5f8;white-space:nowrap}
.list td:first-child{white-space:nowrap}
.badge{color:#fff;padding:2px 8px;border-radius:4px;font-size:12px}
.l-high{background:#c0392b}.l-mid{background:#e67e22}.l-low{background:#b7950b}.l-ok{background:#27ae60}.l-info{background:#7f8c8d}
.advice{margin-top:4px;color:#555;font-size:13px}
.cta{text-align:center;background:#eef4fd}
.doc h3{font-size:15px;margin-bottom:4px}
.doc p,.doc li{font-size:14px}
@media (max-width:600px){.hero h1{font-size:24px}.cats{grid-template-columns:repeat(2,1fr)}.card{padding:16px}}