/* 站点说明区：轻量信息卡，和榜单页的蓝粉色调保持一致 */
.intro {
    position: relative;
    max-width: 980px;
    margin: 0 auto 14px;
    padding: 14px 18px 14px 22px;
    border: 1px solid #e9eefc;
    border-radius: 16px;
    background:
        linear-gradient(135deg, rgba(255, 255, 255, .94), rgba(246, 251, 255, .9)),
        linear-gradient(90deg, rgba(255, 120, 184, .08), rgba(118, 201, 255, .08));
    box-shadow: 0 10px 24px rgba(73, 96, 143, .08);
    color: #536487;
    font-size: .92rem;
    line-height: 1.72;
    text-align: left;
}

.intro::before {
    content: "";
    position: absolute;
    top: 14px;
    bottom: 14px;
    left: 10px;
    width: 4px;
    border-radius: 999px;
    background: linear-gradient(180deg, #ff78b8, #76c9ff);
}

.intro h1,
.intro h2,
.intro h3 {
    margin-top: 0;
    color: #2f3c5a;
    font-weight: 800;
    letter-spacing: 0;
}

.intro h1 {
    font-size: 1.45rem;
}

.intro h2 {
    font-size: 1.28rem;
}

.intro h3 {
    font-size: 1.08rem;
}

.intro p {
    margin-bottom: .75rem;
}

.intro .column_example {
    max-width: 860px;
    margin: 0 auto;
    color: #5f6f95;
    text-align: left;
}

.category > .intro {
    max-width: 860px;
    margin-top: -2px;
    margin-bottom: 16px;
    padding-top: 12px;
    padding-bottom: 12px;
}

@media (max-width: 768px) {
    .intro {
        border-radius: 14px;
        padding: 12px 14px 12px 20px;
        font-size: .86rem;
        line-height: 1.65;
    }

    .intro::before {
        top: 12px;
        bottom: 12px;
        left: 9px;
        width: 3px;
    }
}

@media (max-width: 420px) {
    .intro {
        margin-bottom: 12px;
        padding: 11px 12px 11px 18px;
        font-size: .82rem;
    }
}