:root {
    --accent: #0d6efd;
    --panel: #1f2933;
    --muted: #9aa6af;
    --bg: #0f1720;
    --text: #e6eef6;
}

body.industrial-bg {
    background: linear-gradient(180deg,#0b1220 0%, #0f1720 100%);
    color: var(--text);
    min-height: 100vh;
}

.industrial-navbar {
    background: linear-gradient(90deg,#0b141a,#162129);
    box-shadow: 0 2px 8px rgba(0,0,0,0.5);
}

.card-industrial {
    background: linear-gradient(180deg,var(--panel),#0f1720);
    border: 1px solid rgba(255,255,255,0.12);
    box-shadow: 0 6px 18px rgba(2,6,23,0.6);
    color: var(--text);
}

/* 提升输入与下拉对比度 */
.form-control, .form-select {
    background: #0b0f14 !important;
    color: #f5f7fa !important;
    border: 1px solid rgba(255,255,255,0.18) !important;
}

    .form-control[type="password"] {
        background: #0b0f14 !important;
        color: #ffffff !important;
        -webkit-text-security: disc;
    }

    .form-control::placeholder {
        color: #b8c1cc;
    }

    .form-select option {
        color: #111;
        background: #fff;
    }

    .form-control:focus, .form-select:focus {
        box-shadow: none !important;
        border-color: var(--accent) !important;
        color: #ffffff !important;
        background: #0b0f14 !important;
    }

.btn-accent {
    background: var(--accent);
    border-color: transparent;
    color: #fff;
}

.industrial-footer {
    background: transparent;
    color: var(--muted);
    margin-top: 3rem;
}

.header-hero {
    color: #fff;
    margin-bottom: 2rem;
}

.small-muted {
    color: var(--muted);
}