.container {
    max-width: 1200px;   /* ✅ 加宽 */
    margin: 60px auto;
    padding: 24px;
}

.card {
    background: #fff;
    padding: 60px;       /* 稍微加大更商务 */
    border-radius: 14px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}

/* ✅ 强制按钮可见性修复 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 18px;
    border-radius: 8px;
    text-decoration: none;

    background: #007bff;
    color: #ffffff !important;   /* 🔥 强制文字白色 */
    font-size: 14px;
    font-weight: 600;

    line-height: 1;
    white-space: nowrap;         /* 防止文字被压没 */
}

.btn:link,
.btn:visited {
    color: #fff !important;
}

.btn:hover {
    opacity: 0.9;
}