.glass-card {
    background: rgba(255,255,255,0.85);
    border-radius: 2rem;
    box-shadow: 0 8px 32px 0 rgba(200, 200, 255, 0.10), 0 1.5px 8px 0 rgba(255,255,255,0.18);
    backdrop-filter: blur(22px) saturate(120%);
    border: 1.5px solid rgba(255,255,255,0.5);
}

/* 白系グラデーション */
.gradient-border {
    border-image: linear-gradient(90deg, #fff 0%, #f8fafc 50%, #e0e7ef 100%);
    border-image-slice: 1;
}

/* 白ベースのボタン */
.fancy-btn {
    transition: all 0.2s cubic-bezier(.4,0,.2,1);
    box-shadow: 0 4px 24px 0 rgba(180, 180, 220, 0.10);
    backdrop-filter: blur(10px);
    background: linear-gradient(90deg, #fff 0%, #f8fafc 100%);
    color: #3b3b4f;
    border: 1px solid rgba(255,255,255,0.5);
}
.fancy-btn:hover {
    transform: scale(1.05);
    background: linear-gradient(90deg, #f8fafc 0%, #e0e7ef 100%);
    color: #1e293b;
}