/* 学员端登录/注册统一视觉（2026-09-11） */
html, body { height: 100%; }
body.auth-page {
    margin: 0;
    padding: 24px 16px;
    box-sizing: border-box;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f4f6f9;
}
.auth-card {
    width: 100%;
    max-width: 400px;
    background: #fff;
    border: 1px solid #e9ecef;
    border-radius: 14px;
    box-shadow: 0 8px 30px rgba(30, 60, 92, 0.10);
    padding: 36px 32px 28px;
}
.auth-card.auth-card-wide { max-width: 460px; }
.auth-card h2 {
    font-weight: 700;
    color: #1e3c5c;
    font-size: 1.6rem;
    margin-bottom: 6px;
    text-align: center;
}
.auth-card .auth-subtitle {
    text-align: center;
    color: #8a94a6;
    font-size: 0.88rem;
    margin-bottom: 22px;
}
.auth-card .form-label { font-weight: 600; color: #495057; }
.auth-card .required-star { color: #dc3545; font-weight: bold; margin-left: 2px; }
.auth-card .form-control,
.auth-card .form-select { padding: 9px 12px; border-radius: 8px; }
.auth-card .form-control:focus,
.auth-card .form-select:focus {
    border-color: #1e3c5c;
    box-shadow: 0 0 0 0.18rem rgba(30, 60, 92, 0.12);
}
.auth-card .btn-auth {
    background-color: #1e3c5c;
    border-color: #1e3c5c;
    color: #fff;
    padding: 10px 0;
    font-weight: 600;
    border-radius: 8px;
}
.auth-card .btn-auth:hover,
.auth-card .btn-auth:focus { background-color: #16304b; border-color: #16304b; color: #fff; }
.auth-card a { color: #1e3c5c; }
.auth-foot { margin: 16px 0 0; text-align: center; font-size: 0.92rem; }
.auth-card .alert { border-radius: 8px; padding: 10px 14px; font-size: 0.92rem; }