/* 公司简介页 — 通栏背景勿用裸 100vw，避免底部横向滚动条 */
html:has(body.page-about),
.page-about,
.page-about .main {
    overflow-x: clip
}

.page-about {
    --about-text: #434343;
    --about-surface: #f5f5f7
}

.page-about .site-about {
    position: relative;
    width: var(--site-width);
    max-width: var(--site-max-width, 1440px);
    margin: 0 auto;
    padding: 0 0 var(--site-space-content-bottom);
    color: var(--about-text);
    box-sizing: border-box
}

.page-about .site-about::before {
    content: "";
    position: absolute;
    z-index: -2;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 100vw;
    margin-left: -50vw;
    transform: none;
    background: var(--about-surface);
    pointer-events: none
}

.page-about .site-about > .site-page-title {
    margin-bottom: var(--site-title-margin-bottom) !important
}

/* 简介 / 文化 — 左文右图 */
.site-about-intro {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: clamp(28px, 4%, 56px);
    align-items: center
}

.site-about-intro__text p {
    margin: 0 0 14px;
    font-size: var(--site-font-size-base);
    line-height: var(--site-line-height-body);
    color: var(--about-text);
    text-align: justify
}

.site-about-intro__text p:last-child {
    margin-bottom: 0
}

.site-about-intro__media {
    margin: 0;
    overflow: hidden;
    border-radius: 4px
}

.site-about-intro__media img {
    display: block;
    width: 100%;
    height: auto
}

.site-about-markers {
    list-style: none;
    margin: 0 0 18px;
    padding: 0
}

.site-about-markers li {
    position: relative;
    margin: 0 0 14px;
    padding-left: 20px;
    font-size: var(--site-font-size-base);
    line-height: 1.75;
    color: var(--about-text)
}

.site-about-markers li:last-child {
    margin-bottom: 0
}

.site-about-markers li::before {
    content: "▲";
    position: absolute;
    left: 0;
    top: 0.35em;
    font-size: 10px;
    line-height: 1;
    color: var(--site-color-primary-hover)
}

/* 数字条 — 白底圆角卡片 */
.site-about-stats {
    display: flex;
    flex-wrap: nowrap;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    margin-top: 40px;
    padding: 36px 40px;
    background: #fff;
    border-radius: 12px;
    box-sizing: border-box
}

.site-about-stats__item {
    flex: 1 1 0;
    min-width: 0;
    text-align: center
}

.site-about-stats__value {
    display: inline-flex;
    align-items: flex-end;
    justify-content: center;
    margin: 0 0 10px;
    line-height: 1;
    white-space: nowrap;
    color: var(--site-color-primary)
}

.site-about-stats__num {
    font-size: clamp(34px, 4vw, 48px);
    font-weight: 700;
    line-height: 1
}

.site-about-stats__unit {
    margin-left: 2px;
    padding-bottom: 0.08em;
    font-size: clamp(16px, 1.7vw, 22px);
    font-weight: 600;
    line-height: 1
}

.site-about-stats__label {
    margin: 0;
    font-size: var(--site-font-size-sm);
    line-height: 1.5;
    color: var(--site-color-text-secondary)
}

.site-about-stats.is-animating .site-about-stats__item {
    animation: site-about-stats-in 0.55s ease both
}

.site-about-stats.is-animating .site-about-stats__item:nth-child(1) {
    animation-delay: 0s
}

.site-about-stats.is-animating .site-about-stats__item:nth-child(2) {
    animation-delay: 0.08s
}

.site-about-stats.is-animating .site-about-stats__item:nth-child(3) {
    animation-delay: 0.16s
}

.site-about-stats.is-animating .site-about-stats__item:nth-child(4) {
    animation-delay: 0.24s
}

.site-about-stats.is-animating .site-about-stats__item:nth-child(5) {
    animation-delay: 0.32s
}

@keyframes site-about-stats-in {
    from {
        opacity: 0;
        transform: translateY(12px)
    }
    to {
        opacity: 1;
        transform: translateY(0)
    }
}

@media (prefers-reduced-motion: reduce) {
    .site-about-stats.is-animating .site-about-stats__item {
        animation: none
    }
}

/* 发展历程 — 竖向交替时间轴（参考永利） */
.site-about-timeline {
    position: relative;
    margin-top: 48px;
    padding: 56px 0 64px
}

.site-about-timeline::before {
    content: "";
    position: absolute;
    z-index: -1;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 100vw;
    margin-left: -50vw;
    background: #fff;
    pointer-events: none
}

.site-about-timeline > .site-page-title {
    margin-bottom: 48px !important;
    padding-top: 0 !important
}

.site-about-timeline__list {
    position: relative;
    list-style: none;
    width: 100%;
    margin: 0;
    padding: 8px 0 0;
    box-sizing: border-box
}

.site-about-timeline__list::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 1px;
    margin-left: -0.5px;
    background: #e5e5e5
}

.site-about-timeline__item {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 28px minmax(0, 1fr);
    column-gap: 28px;
    align-items: start;
    padding: 0 0 44px;
    box-sizing: border-box
}

.site-about-timeline__item:last-child {
    padding-bottom: 0
}

.site-about-timeline__year {
    margin: 0;
    padding-top: 10px;
    font-size: 28px;
    font-weight: 700;
    line-height: 1.2;
    color: var(--site-color-primary);
    letter-spacing: 0.02em
}

.site-about-timeline__node {
    position: relative;
    z-index: 1;
    justify-self: center;
    width: 14px;
    height: 14px;
    margin-top: 16px;
    border: 2px solid var(--site-color-primary);
    border-radius: 50%;
    background: #fff;
    box-sizing: border-box
}

.site-about-timeline__card {
    margin: 0;
    padding: 18px 22px;
    background: #fff;
    border: 1px solid #f0f0f0;
    border-radius: 6px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.06);
    box-sizing: border-box
}

.site-about-timeline__label {
    margin: 0 0 8px;
    font-size: 16px;
    font-weight: 700;
    line-height: 1.4;
    color: var(--site-color-text)
}

.site-about-timeline__desc {
    margin: 0;
    font-size: 14px;
    line-height: 1.75;
    color: #666
}

/* 奇数：年份左、内容右 */
.site-about-timeline__item:nth-child(odd) .site-about-timeline__year {
    grid-column: 1;
    grid-row: 1;
    text-align: right;
    padding-right: 4px
}

.site-about-timeline__item:nth-child(odd) .site-about-timeline__node {
    grid-column: 2;
    grid-row: 1
}

.site-about-timeline__item:nth-child(odd) .site-about-timeline__card {
    grid-column: 3;
    grid-row: 1;
    text-align: left
}

/* 偶数：内容左、年份右 */
.site-about-timeline__item:nth-child(even) .site-about-timeline__card {
    grid-column: 1;
    grid-row: 1;
    text-align: right
}

.site-about-timeline__item:nth-child(even) .site-about-timeline__node {
    grid-column: 2;
    grid-row: 1
}

.site-about-timeline__item:nth-child(even) .site-about-timeline__year {
    grid-column: 3;
    grid-row: 1;
    text-align: left;
    padding-left: 4px
}

.site-about-timeline__item:nth-child(even) .site-about-timeline__label,
.site-about-timeline__item:nth-child(even) .site-about-timeline__desc {
    text-align: right
}

/* 企业文化 */
.site-about-culture {
    margin-top: var(--site-section-title-padding-top)
}

.site-about-culture > .site-page-title {
    margin-bottom: 28px !important;
    padding-top: 0 !important
}

@media screen and (max-width: 1024px) and (min-width: 769px) {
    .site-about-intro {
        grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
        align-items: start
    }

    .site-about-stats {
        padding: 28px 24px
    }

    .site-about-timeline__year {
        font-size: 24px
    }

    .site-about-timeline__item {
        column-gap: 20px;
        padding-bottom: 36px
    }
}

@media screen and (max-width: 768px) {
    .page-about .site-about {
        padding-bottom: var(--site-space-content-bottom-mobile)
    }

    .page-about .site-about > .site-page-title {
        margin-bottom: var(--site-title-margin-bottom-mobile) !important
    }

    .site-about-intro {
        grid-template-columns: 1fr;
        gap: 24px
    }

    .site-about-intro__text p {
        text-align: left
    }

    .site-about-stats {
        flex-wrap: wrap;
        gap: 22px 12px;
        margin-top: 28px;
        padding: 28px 20px;
        border-radius: 10px
    }

    .site-about-stats__item {
        flex: 0 0 calc(50% - 8px)
    }

    .site-about-stats__item:nth-child(5) {
        flex: 0 0 100%
    }

    .site-about-stats__num {
        font-size: 32px
    }

    .site-about-stats__unit {
        font-size: 15px
    }

    .site-about-timeline {
        margin-top: 36px;
        padding: 40px 0 48px
    }

    .site-about-timeline > .site-page-title {
        margin-bottom: 28px !important
    }

    .site-about-timeline__list {
        padding-left: 18px
    }

    .site-about-timeline__list::before {
        left: 6px;
        margin-left: 0
    }

    .site-about-timeline__item,
    .site-about-timeline__item:nth-child(odd),
    .site-about-timeline__item:nth-child(even) {
        display: block;
        padding: 0 0 28px 28px
    }

    .site-about-timeline__year,
    .site-about-timeline__item:nth-child(odd) .site-about-timeline__year,
    .site-about-timeline__item:nth-child(even) .site-about-timeline__year {
        text-align: left;
        padding: 0 0 10px;
        font-size: 22px
    }

    .site-about-timeline__node {
        position: absolute;
        left: 0;
        top: 8px;
        margin: 0;
        width: 12px;
        height: 12px
    }

    .site-about-timeline__card,
    .site-about-timeline__item:nth-child(odd) .site-about-timeline__card,
    .site-about-timeline__item:nth-child(even) .site-about-timeline__card {
        text-align: left;
        padding: 16px 18px
    }

    .site-about-timeline__item:nth-child(even) .site-about-timeline__label,
    .site-about-timeline__item:nth-child(even) .site-about-timeline__desc {
        text-align: left
    }

    .site-about-culture {
        margin-top: var(--site-section-title-padding-top-mobile)
    }

    .site-about-markers li {
        margin-bottom: 12px
    }
}