*{box-sizing:border-box}
:root{--bg:#f4f6f8;--surface:#fff;--text:#222;--muted:#68707a;--border:#d9dee4;--primary:#1f4f75;--danger:#b42318;--success:#117a46}
html{font-size:16px}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Yu Gothic","Hiragino Kaku Gothic ProN",sans-serif;line-height:1.7}
a{color:var(--primary)}
.container{width:min(1040px,calc(100% - 30px));margin:0 auto}
.site-header{background:#fff;border-bottom:1px solid var(--border)}
.header-inner{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.site-logo{font-size:24px;font-weight:800;text-decoration:none;color:#18222c}
.site-nav{display:flex;align-items:center;gap:18px}
.site-nav a{text-decoration:none;font-weight:700}
.main-content{padding:34px 0 50px}
.site-footer{border-top:1px solid var(--border);background:#fff;padding:28px 0;text-align:center;color:var(--muted)}
.footer-nav{display:flex;justify-content:center;gap:20px;margin-bottom:10px}
.card{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:26px;margin-bottom:20px;box-shadow:0 3px 12px rgba(20,30,40,.04)}
.card h1,.card h2{margin-top:0}
.page-header{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:22px}
.page-header h1{margin:0;font-size:30px}
.button{display:inline-block;border:0;border-radius:7px;background:var(--primary);color:#fff;text-decoration:none;padding:12px 20px;font-weight:700;cursor:pointer}
.button:hover{opacity:.88}
.button-small{padding:8px 14px}
.button-danger{background:var(--danger)}
.button-secondary{background:#5e6873}
.form-group{margin-bottom:22px}
label,.label{display:block;font-weight:700;margin-bottom:7px}
.required{font-size:12px;color:var(--danger);margin-left:5px}
.private{font-size:12px;color:var(--muted);margin-left:5px}
input[type=text],input[type=email],input[type=number],input[type=password],select,textarea{width:100%;border:1px solid #b9c1ca;border-radius:7px;padding:11px 12px;background:#fff;font:inherit}
textarea{min-height:190px;resize:vertical}
.inline-options{display:flex;flex-wrap:wrap;gap:12px 22px}
.inline-options label{display:inline-flex;align-items:center;gap:7px;font-weight:400;margin:0}
.unit-field{display:flex;align-items:center;gap:10px}
.unit-field input{flex:1}
.help{font-size:13px;color:var(--muted);margin:7px 0 0}
.alert{padding:14px 17px;border-radius:8px;margin-bottom:20px}
.alert-error{background:#fff0ef;border:1px solid #f0aaa4;color:#8f1811}
.alert-success{background:#edf9f2;border:1px solid #a8d8bc;color:#0d6037}
.alert ul{margin:0;padding-left:22px}
.post-list{display:grid;gap:16px}
.post-item{background:#fff;border:1px solid var(--border);border-radius:10px;padding:21px}
.post-item h2{font-size:20px;margin:0 0 8px}
.post-item h2 a{text-decoration:none}
.meta{display:flex;flex-wrap:wrap;gap:8px 16px;color:var(--muted);font-size:14px}
.post-body{white-space:pre-wrap;word-break:break-word}
.data-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;border-top:1px solid var(--border);border-left:1px solid var(--border);margin:20px 0}
.data-row{display:grid;grid-template-columns:130px 1fr;border-right:1px solid var(--border);border-bottom:1px solid var(--border)}
.data-label{background:#f5f7f9;padding:10px;font-weight:700}
.data-value{padding:10px;word-break:break-word}
.empty{text-align:center;padding:50px 20px;color:var(--muted)}
.status{display:inline-block;border-radius:999px;padding:3px 10px;font-size:12px;font-weight:700;background:#edf1f5;color:#4c5966}
.delete-box{margin-top:28px;border-top:1px solid var(--border);padding-top:24px}
@media(max-width:700px){
.header-inner,.page-header{align-items:flex-start;flex-direction:column}
.site-nav{width:100%;justify-content:space-between}
.card{padding:19px}
.page-header h1{font-size:25px}
.data-grid{grid-template-columns:1fr}
}

/* 匿名メール・メッセージ */
.message-notice{background:#f3f8fc;border:1px solid #b8d2e5;border-radius:8px;padding:15px 17px;margin:18px 0}
.message-notice strong{display:block;margin-bottom:4px}
.thread-list{display:grid;gap:14px}
.thread-message{border:1px solid var(--border);border-radius:9px;padding:17px;background:#fff}
.thread-message.is-poster{border-left:5px solid #66717c}
.thread-message.is-contact{border-left:5px solid var(--primary)}
.thread-head{display:flex;justify-content:space-between;gap:14px;color:var(--muted);font-size:13px;margin-bottom:8px}
.thread-body{white-space:pre-wrap;word-break:break-word}
.honeypot{position:absolute!important;left:-9999px!important;width:1px!important;height:1px!important;overflow:hidden!important}