*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,'Helvetica Neue',Arial,'Noto Sans',sans-serif;line-height:1.6;background:#f7f7fb;color:#222}
a{color:#0a66c2;text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:980px;margin:0 auto;padding:1rem}
.site-header{background:#fff;border-bottom:1px solid #e5e7eb;position:sticky;top:0;z-index:10}
.logo a{color:#111;text-decoration:none}
.site-header nav a{margin-right:1rem}
.card{background:#fff;border:1px solid #e5e7eb;border-radius:12px;padding:1rem;margin:1rem 0;box-shadow:0 1px 2px rgba(0,0,0,.04)}
.card h2{margin-top:.2rem}
.btn{display:inline-block;padding:.6rem 1rem;border-radius:10px;border:1px solid #e5e7eb;background:#fff;cursor:pointer}
.btn.primary{background:#0a66c2;color:#fff;border-color:#0a66c2}
.btn.danger{background:#e11d48;color:#fff;border-color:#e11d48}
.form-group{margin-bottom:1rem}
input[type=text],input[type=password],input[type=email],textarea{width:100%;padding:.6rem;border:1px solid #d1d5db;border-radius:10px;background:#fff}
textarea{min-height:180px}
.table{width:100%;border-collapse:collapse}
.table th,.table td{border:1px solid #e5e7eb;padding:.6rem;text-align:left}
.table th{background:#fafafa}
.error,.notice{padding:.8rem 1rem;border-radius:10px;margin:1rem 0}
.error{background:#fff1f2;border:1px solid #f43f5e}
.notice{background:#ecfeff;border:1px solid #06b6d4}