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

body {
    min-height: 100vh;
    font-family: -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    background: #f5f6fa;
    display: flex;
    flex-direction: column;
}

.toolbar {
    padding: 20px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    background: #fff;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    position: relative;
    z-index: 10;
}

.toolbar button {
    padding: 10px 24px;
    border: 1px solid #d0d5e0;
    background: #fff;
    border-radius: 8px;
    font-size: 15px;
    color: #333;
    cursor: pointer;
    transition: all .18s;
}

.toolbar button:hover {
    border-color: #4d7cff;
    color: #4d7cff;
}

.toolbar button.active {
    background: #4d7cff;
    border-color: #4d7cff;
    color: #fff;
    box-shadow: 0 4px 12px rgba(77, 124, 255, .35);
}

.captcha-box {
    pointer-events: auto;
}