:root { --bg:#f6f7fb; --card:#fff; --text:#111; --muted:#667085; --line:#e6e8ef; --btn:#111; --btnText:#fff;}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,'Noto Sans JP',sans-serif;background:var(--bg);color:var(--text)}
a{color:#0b57d0;text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:1100px;margin:0 auto;padding:20px}
.header{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.brand{font-weight:700}
.nav a{margin-left:14px;color:var(--muted)}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px;margin:14px 0;box-shadow:0 1px 3px rgba(16,24,40,.06)}
h1{font-size:20px;margin:0 0 10px}
h2{font-size:16px;margin:0 0 10px}
.row{display:flex;gap:12px;flex-wrap:wrap}
.col{flex:1;min-width:260px}
label{display:block;font-size:12px;color:var(--muted);margin:10px 0 6px}
input,select,textarea{width:100%;padding:10px;border:1px solid var(--line);border-radius:10px;background:#fff}
textarea{min-height:90px}
.btn{display:inline-block;border:none;background:var(--btn);color:var(--btnText);padding:10px 14px;border-radius:10px;cursor:pointer;font-weight:600}
.btn.secondary{background:#fff;color:var(--text);border:1px solid var(--line)}
.btn.danger{background:#b42318}
.badge{display:inline-block;padding:4px 10px;border-radius:999px;font-size:12px;border:1px solid var(--line);background:#fff}
.badge.ok{border-color:#12b76a;color:#027a48}
.badge.warn{border-color:#f79009;color:#b54708}
.badge.muted{color:var(--muted)}
.table{width:100%;border-collapse:collapse}
.table th,.table td{border-bottom:1px solid var(--line);padding:10px;font-size:13px;text-align:left;vertical-align:top}
.table th a{color:inherit;text-decoration:none}
.table th a:hover{text-decoration:underline}
.alert{padding:10px 12px;border-radius:10px;border:1px solid var(--line);background:#fff}
.alert.ok{border-color:#12b76a}
.alert.err{border-color:#f04438}
.small{font-size:12px;color:var(--muted)}
.kbd{font-family:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;font-size:12px;background:#fff;border:1px solid var(--line);padding:2px 6px;border-radius:6px}
.alert.warn{border:1px solid #e8b800;background:#fff7d6}