:root{
  --bg:#0d1b2a; --card:#14213d; --text:#f8f9fa; --accent:#c9a23f; --muted:#6c757d; --ok:#2ea043; --bad:#d7263d;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family: "Noto Sans JP", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", sans-serif;background:var(--bg);color:var(--text)}
a{color:var(--accent);text-decoration:none}
.container{max-width:1100px;margin:0 auto;padding:24px}
.card{background:linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0));border:1px solid rgba(255,255,255,0.08);border-radius:16px;padding:20px;box-shadow:0 8px 30px rgba(0,0,0,0.25)}
h1,h2,h3{margin:0 0 12px}
h1{font-size:28px}
h2{font-size:20px;color:#e9ecef}
label{display:block;margin:10px 0 6px;color:#e9ecef}
input,select,button,textarea{width:100%;padding:12px;border-radius:12px;border:1px solid rgba(255,255,255,0.12);background:#0b1323;color:var(--text)}
input:focus,select:focus,textarea:focus{outline:2px solid var(--accent)}
button{cursor:pointer;background:var(--accent);color:#1b1b1b;font-weight:600}
.row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.row3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px}
.actions{display:flex;gap:10px;flex-wrap:wrap}
.table{width:100%;border-collapse:collapse;margin-top:12px}
.table th,.table td{border-bottom:1px solid rgba(255,255,255,0.08);padding:10px;text-align:left}
.badge{display:inline-block;padding:3px 8px;border-radius:999px;background:#1b2b4b;border:1px solid rgba(255,255,255,0.12);font-size:12px}
.header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}
.header .brand{font-weight:700;letter-spacing:0.5px}
.header .user{font-size:14px;color:var(--muted)}
.nav{display:flex;gap:8px;margin-bottom:12px;flex-wrap:wrap}
.nav button{background:#1b2b4b;color:#e7ecef;border:1px solid rgba(255,255,255,0.12)}
.nav button.active{background:var(--accent);color:#1b1b1b}
.notice{margin-top:10px;color:var(--muted)}
@media (max-width:800px){
  .row,.row3{grid-template-columns:1fr}
}