* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: #08080c;
    background-image: linear-gradient(rgba(8,8,12,0.9), rgba(8,8,12,0.9));
    min-height: 100vh;
    font-family: "Microsoft Yahei", Arial, sans-serif;
}

.card {
    background: rgba(14,14,20,0.95) !important;
    border: 1px solid rgba(212,175,55,0.3) !important;
    border-radius: 14px !important;
    box-shadow: 0 0 30px rgba(212,175,55,0.2) !important;
}

.card-header {
    background: transparent !important;
    border-bottom: 1px solid rgba(212,175,55,0.2) !important;
    padding: 24px 15px;
}

    .card-header h3 {
        color: #d4af37;
        font-weight: bold;
        letter-spacing: 2px;
        font-size: 26px;
    }

.form-label {
    color: #e5e5e5 !important;
}

.form-control {
    background-color: #12121a !important;
    border: 1px solid #333 !important;
    color: #fff !important;
    border-radius: 8px !important;
    height: 48px !important;
}

    .form-control:focus {
        border-color: #d4af37 !important;
        box-shadow: 0 0 0 0.2rem rgba(212,175,55,0.25) !important;
        background-color: #12121a !important;
        color: #fff !important;
    }

.btn-danger {
    background: linear-gradient(135deg, #d4af37, #b88a20) !important;
    border: none !important;
    color: #000 !important;
    font-weight: bold !important;
    font-size: 16px !important;
    height: 48px !important;
    border-radius: 8px !important;
}

    .btn-danger:hover {
        opacity: 0.92 !important;
    }

.btn-outline-secondary {
    border-color: rgba(212,175,55,0.5) !important;
    color: #d4af37 !important;
}

    .btn-outline-secondary:hover {
        background-color: rgba(212,175,55,0.15) !important;
        border-color: #d4af37 !important;
        color: #fff !important;
    }

.text-danger {
    color: #ff5555 !important;
}

.container {
    padding-top: 80px;
}
/* 背景浮动彩球 */
.ball-item {
    position: absolute;
    border-radius: 50%;
    opacity: 0.6;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}