.ac-author-card {
    position: relative;
    background: var(--bg-card, #fff);
    border-radius: 16px;
    overflow: hidden;
    text-align: center;
    box-shadow: var(--shadow-sm, 0 2px 12px rgba(0,0,0,.08));
    padding-bottom: 20px;
    margin-bottom: 16px;
}
.ac-bg {
    width: 100%;
    height: 110px;
    background-size: cover;
    background-position: center;
}
.ac-avatar-wrap {
    margin: -44px auto 0;
    width: 88px;
    height: 88px;
    border-radius: 50%;
    border: 4px solid var(--bg-card, #fff);
    overflow: hidden;
    background: var(--bg-secondary, #eee);
    position: relative;
    z-index: 1;
}
.ac-avatar {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}
.ac-name-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    margin: 12px 16px 0;
}
.ac-name {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary, #1e293b);
    line-height: 1.3;
}
.ac-badge svg {
    width: 22px;
    height: 22px;
    display: block;
}
.ac-bio {
    margin: 8px 20px 0;
    font-size: 13px;
    color: var(--text-secondary, #64748b);
    line-height: 1.7;
}
.ac-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    margin: 16px 16px 0;
    padding: 12px 0;
}
.ac-stat-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.ac-stat-num {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary, #1e293b);
}
.ac-stat-label {
    font-size: 12px;
    color: var(--text-tertiary, #94a3b8);
}