/* 关于奇门甲 — 参考开目软件公司介绍页版式 */

.about-page main {
    background: var(--bg-light);
}

.ab-main {
    padding-top: 82px;
}

.ab-banner {
    position: relative;
    min-height: 280px;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: #071018;
}

.ab-banner-bg {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(120deg, rgba(0, 179, 179, 0.18) 0%, transparent 45%),
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(135deg, #071018 0%, #0c1a24 55%, #081018 100%);
    background-size: auto, 48px 48px, 48px 48px, auto;
}

.ab-banner-inner {
    position: relative;
    z-index: 1;
    padding: 48px 24px 56px;
    text-align: center;
}

.ab-banner-crumb {
    margin: 0 0 16px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
    letter-spacing: 0.12em;
}

.ab-banner-title {
    margin: 0 0 16px;
    font-size: clamp(28px, 4.5vw, 42px);
    font-weight: 700;
    line-height: 1.35;
    letter-spacing: 0.12em;
    color: #fff;
}

.ab-banner-em {
    color: var(--primary-light);
    font-style: normal;
}

.ab-banner-desc {
    margin: 0 auto;
    max-width: 640px;
    font-size: 15px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.72);
}

.ab-subnav {
    position: sticky;
    top: 82px;
    z-index: 90;
    background: var(--bg-light);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
}

.ab-subnav-list {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 0;
    margin: 0;
    padding: 0;
    overflow-x: auto;
}

.ab-subnav-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    min-width: 120px;
    padding: 20px 28px 18px;
    text-decoration: none;
    color: var(--text-secondary);
    border-bottom: 3px solid transparent;
    transition: color var(--transition-normal), border-color var(--transition-normal), background var(--transition-normal);
}

.ab-subnav-link:hover {
    color: var(--primary-color);
    background: rgba(0, 179, 179, 0.04);
}

.ab-subnav-link.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
    background: rgba(0, 179, 179, 0.06);
}

.ab-subnav-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--bg-light-3);
    transition: background var(--transition-normal);
}

.ab-subnav-icon svg {
    width: 20px;
    height: 20px;
}

.ab-subnav-link.active .ab-subnav-icon,
.ab-subnav-link:hover .ab-subnav-icon {
    background: rgba(0, 179, 179, 0.12);
}

.ab-subnav-text {
    font-size: 14px;
    font-weight: 600;
    white-space: nowrap;
}

.ab-content {
    background: var(--bg-light);
}

.ab-block {
    padding: 64px 0;
    scroll-margin-top: 160px;
}

.ab-block--alt {
    background: var(--bg-light-2);
}

.ab-block-head {
    margin-bottom: 36px;
    text-align: center;
}

.ab-block-title {
    margin: 0 0 8px;
    font-size: clamp(26px, 3.5vw, 34px);
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 0.06em;
}

.ab-block-en {
    margin: 0;
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.ab-block-lead {
    max-width: 720px;
    margin: -12px auto 40px;
    text-align: center;
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-secondary);
}

.ab-profile-name {
    margin: 0 0 24px;
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-color);
    text-align: center;
}

.ab-profile-text {
    max-width: 920px;
    margin: 0 auto;
    font-size: 15px;
    line-height: 2;
    color: var(--text-secondary);
    text-align: justify;
}

.ab-profile-text p {
    margin: 0 0 18px;
    text-indent: 2em;
}

.ab-profile-text p:last-child {
    margin-bottom: 0;
}

.ab-metrics {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    max-width: 920px;
    margin: 48px auto 0;
    background: var(--border-color);
    border: 1px solid var(--border-color);
}

.ab-metric {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 32px 16px;
    text-align: center;
    background: var(--bg-light);
}

.ab-metric strong {
    font-size: clamp(28px, 3.5vw, 38px);
    font-weight: 800;
    line-height: 1;
    color: var(--primary-color);
}

.ab-metric strong sup {
    font-size: 0.55em;
    font-weight: 700;
    vertical-align: super;
}

.ab-metric span {
    font-size: 14px;
    color: var(--text-muted);
}

.ab-contact-wrap {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 48px;
    align-items: start;
    max-width: 880px;
    margin: 0 auto;
    padding: 40px;
    background: var(--bg-light-2);
    border: 1px solid var(--border-color);
}

.ab-contact-info {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.ab-contact-item .ab-contact-label {
    display: block;
    margin-bottom: 8px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: var(--text-muted);
}

.ab-contact-item p {
    margin: 0;
    font-size: 17px;
    font-weight: 600;
    color: var(--text-primary);
}

.ab-contact-qr {
    text-align: center;
    padding: 20px;
    background: var(--bg-light);
    border: 1px solid var(--border-color);
}

.ab-contact-qr img {
    display: block;
    width: 148px;
    height: 148px;
    margin: 0 auto 10px;
    background: #fff;
}

.ab-contact-qr p {
    margin: 0;
    font-size: 13px;
    color: var(--text-muted);
}

@media (max-width: 992px) {
    .ab-metrics {
        grid-template-columns: repeat(2, 1fr);
    }

    .ab-contact-wrap {
        grid-template-columns: 1fr;
        padding: 28px 24px;
    }

    .ab-contact-qr {
        max-width: 200px;
        margin: 0 auto;
    }
}

@media (max-width: 576px) {
    .ab-banner-inner {
        padding: 36px 20px 44px;
    }

    .ab-block {
        padding: 48px 0;
        scroll-margin-top: 140px;
    }

    .ab-profile-text {
        text-align: left;
    }

    .ab-profile-text p {
        text-indent: 0;
    }
}