body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
}
.safe-area-top {
    padding-top: env(safe-area-inset-top, 44px);
}
.tab-btn {
    color: #8b8b8b;
    position: relative;
    transition: color 0.2s;
}
.tab-btn.active {
    color: #0052d9;
    font-weight: 600;
}
.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 3px;
    border-radius: 2px;
    background: #0052d9;
}
.note-tag {
    padding: 4px 10px;
    font-size: 12px;
    border-radius: 8px;
    border: 1px solid;
}
.tag-customer {
    background: linear-gradient(135deg, #ecf2fe, #e8eeff);
    color: #0052d9;
    border-color: #c5d4f7;
}
.tag-coach {
    background: linear-gradient(135deg, #e8faf0, #e0f7ea);
    color: #00a870;
    border-color: #b3e6d0;
}