@charset "UTF-8";

/* === 业务板块页面公共形状 === */

/* 页头 */
.biz-header {
    width: 100%;
    min-width: 1320px;
    background: linear-gradient(135deg, #0a1e4a 0%, #0d3080 55%, #0478e4 100%);
    padding: 55px 0 50px;
}
.biz-header-inner {
    width: 1200px;
    margin: 0 auto;
}
.biz-header-en {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.55);
    text-transform: uppercase;
    letter-spacing: 3px;
}
.biz-header-cn {
    font-size: 38px;
    font-weight: bold;
    color: #fff;
    margin: 12px 0 0;
    letter-spacing: 2px;
}

/* 节标题 */
.biz-section {
    padding: 60px 0;
}
.biz-section-inner {
    width: 1200px;
    margin: 0 auto;
}
.biz-section-label {
    position: relative;
    padding-left: 16px;
    font-size: 20px;
    font-weight: bold;
    color: #1a1a1a;
    margin-bottom: 35px;
}
.biz-section-label::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 22px;
    background: #0478e4;
    border-radius: 2px;
}

/* 图文介绍区 */
.biz-intro-row {
    display: flex;
    gap: 50px;
    align-items: flex-start;
}
.biz-intro-text {
    flex: 1;
}
.biz-intro-img {
    width: 480px;
    flex-shrink: 0;
}
.biz-intro-img img {
    width: 100%;
    display: block;
}
.biz-intro-desc {
    font-size: 16px;
    color: #555;
    line-height: 2;
    margin-top: 15px;
}
.biz-intro-foot {
    margin-top: 30px;
    padding: 18px 20px;
    background: #f0f6ff;
    border-left: 4px solid #0478e4;
    font-size: 15px;
    color: #444;
    line-height: 1.9;
}

/* 数据栏 */
.biz-stats-bar {
    width: 100%;
    min-width: 1320px;
    background: #0a1e4a;
    padding: 52px 0;
}
.biz-stats-bar .biz-section-inner {
    display: flex;
    align-items: center;
}
.biz-stats-item {
    flex: 1;
    text-align: center;
    color: #fff;
    position: relative;
}
.biz-stats-item + .biz-stats-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10%;
    height: 80%;
    width: 1px;
    background: rgba(255, 255, 255, 0.2);
}
.biz-stats-num {
    font-size: 58px;
    font-weight: bold;
    color: #fff;
    line-height: 1;
    display: inline-flex;
    align-items: baseline;
    gap: 4px;
}
.biz-stats-unit {
    font-size: 26px;
    font-weight: bold;
}
.biz-stats-desc {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.65);
    margin-top: 14px;
    line-height: 1.8;
    padding: 0 24px;
}

/* 产品卡片网格 */
.biz-products-bg {
    background: #f3f5f7;
}
.biz-product-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 10px;
}
.biz-product-grid-2 .biz-product-card { width: calc(50% - 10px); }
.biz-product-grid-3 .biz-product-card { width: calc(33.33% - 14px); }
.biz-product-grid-4 .biz-product-card { width: calc(25% - 15px); }
.biz-product-card {
    background: #fff;
    overflow: hidden;
    border-radius: 5px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.07);
    transition: box-shadow 0.3s, transform 0.3s;
}
.biz-product-card:hover {
    box-shadow: 0 6px 20px rgba(4, 120, 228, 0.18);
    transform: translateY(-3px);
}
.biz-product-card-img {
    width: 100%;
    height: 210px;
    background: linear-gradient(135deg, #e8f2ff 0%, #c8dff5 100%);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
    box-sizing: border-box;
}
.biz-product-card-img img {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    display: block;
}
.biz-product-card-name {
    padding: 12px 16px;
    font-size: 17px;
    font-weight: bold;
    text-align: center;
    background: linear-gradient(135deg, #0d3080 0%, #0478e4 100%);
    color: #fff;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
}
.biz-card-en {
    font-size: 12px;
    font-weight: normal;
    color: rgba(255, 255, 255, 0.72);
    text-transform: uppercase;
    letter-spacing: 1px;
    line-height: 1.2;
}

/* 零件卡片（人形机械人） */
.biz-parts-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 10px;
}
.biz-parts-grid-2col .biz-part-card { width: calc(50% - 8px); }
.biz-part-card {
    width: calc(25% - 12px);
    background: #fff;
    border-radius: 5px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.07);
    overflow: hidden;
    transition: box-shadow 0.3s;
}
.biz-part-card:hover {
    box-shadow: 0 4px 16px rgba(4, 120, 228, 0.15);
}
.biz-part-card-img {
    width: 100%;
    height: 160px;
    background: linear-gradient(135deg, #e8f2ff 0%, #c8dff5 100%);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
    box-sizing: border-box;
}
.biz-part-card-img img {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
}
.biz-part-card-name {
    padding: 10px 14px;
    font-size: 15px;
    font-weight: bold;
    text-align: center;
    background: linear-gradient(135deg, #0d3080 0%, #0478e4 100%);
    color: #fff;
}

/* 利用领域 Tag */
.biz-domain-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 20px;
}
.biz-domain-tag {
    padding: 10px 26px;
    background: #f0f6ff;
    border: 1px solid #b3d0f5;
    color: #0478e4;
    font-size: 15px;
}

/* 图片占位符文字 */
.biz-img-placeholder-text {
    color: #bbb;
    font-size: 13px;
}

/* 人形机械人：左图右栏目布局 */
.biz-robot-wrap {
    padding: 60px 0 70px;
    background: #fff;
}
.biz-robot-layout {
    display: flex;
    gap: 100px;
    align-items: stretch;
    width: 1200px;
    margin: 0 auto;
}
.biz-robot-figure {
    width: 450px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
}
.biz-robot-figure img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}
.biz-robot-parts {
    flex: 0 0 650px;
    min-width: 0;
}
.biz-robot-section {
    padding-bottom: 18px;
    margin-bottom: 18px;
    border-bottom: 1px solid #eee;
}
.biz-robot-section:last-child {
    padding-bottom: 0;
    margin-bottom: 0;
    border-bottom: none;
}
.biz-robot-parts .biz-section-label {
    margin-bottom: 10px;
}
.biz-robot-parts .biz-parts-grid {
    gap: 8px;
}
.biz-robot-parts .biz-part-card {
    width: calc(50% - 4px);
}
.biz-robot-parts .biz-part-card-img {
    height: auto;
    aspect-ratio: 5 / 2;
}
/* 工程机械：3:1，，，，，去 padding，，，，，图片 cover */
.biz-engineering .biz-product-card-img {
    height: auto;
    aspect-ratio: 3 / 1;
    padding: 0;
}
.biz-engineering .biz-product-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.biz-robot-parts .biz-part-card-name {
    padding: 8px 10px;
    font-size: 14px;
}

/* 人形机械人解剖图布局（左-机械人-右 Grid） */
.robot-anatomy-wrap {
    background: #fff;
    padding: 60px 0 70px;
}
.robot-anatomy-grid {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 200px 1fr;
    width: 860px;
    margin: 0 auto;
}
.robot-anatomy-lines {
    position: absolute;
    top: 0; left: 0;
    pointer-events: none;
    z-index: 0;
}
/* 机械人图居中，，，，，跨全数行 */
.robot-grid-center {
    grid-column: 2;
    grid-row: 1 / 7;   /* 6行：上肢1 腰部1 下肢3 脚部1 */
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
    padding: 10px 0;
}
.robot-grid-center img {
    max-width: 100%;
    max-height: 600px;
    object-fit: contain;
}
/* 产品卡片（左列 / 右列） */
.robot-card-left,
.robot-card-right {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 20px;
    text-decoration: none;
    color: inherit;
    position: relative;
    z-index: 1;
}
/* 左列：卡片贴左边缘，，，，，文字在左（表侧），，，，，图片在右（内侧） */
.robot-card-left  { grid-column: 1; justify-self: start; flex-direction: row-reverse; }
/* 右列：卡片贴右边缘，，，，，图片在左（内侧），，，，，文字在右（表侧） */
.robot-card-right { grid-column: 3; justify-self: end;   flex-direction: row; }
.robot-card-img-box {
    width: 80px;
    height: 80px;
    flex-shrink: 0;
}
.robot-card-img-box img {
    width: 100%; height: 100%;
    object-fit: contain;
    transition: transform 0.2s;
}
.robot-card-left:hover  .robot-card-img-box img,
.robot-card-right:hover .robot-card-img-box img {
    transform: scale(1.08);
}
.robot-card-text { flex: 1; }
.robot-card-left  .robot-card-text { text-align: right; }
.robot-card-right .robot-card-text { text-align: left; }
.robot-card-name {
    font-size: 14px;
    color: #222;
    font-weight: bold;
    line-height: 1.4;
}
.robot-card-cat {
    font-size: 11px;
    color: #999;
    margin-top: 4px;
}

/* 图片灯箱 */
.img-lightbox {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
    z-index: 9999;
    align-items: center;
    justify-content: center;
}
.img-lightbox.active { display: flex; }
.img-lightbox-window {
    background: #fff;
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.35);
    max-width: 80vw;
    display: flex;
    flex-direction: column;
}
.img-lightbox-header {
    background: #0478e4;
    padding: 10px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
}
.img-lightbox-title {
    color: #fff;
    font-size: 15px;
    font-weight: bold;
}
.img-lightbox-close {
    color: #fff;
    font-size: 22px;
    line-height: 1;
    cursor: pointer;
    user-select: none;
    opacity: 0.85;
}
.img-lightbox-close:hover { opacity: 1; }
.img-lightbox-body {
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.img-lightbox-body img {
    max-width: 70vw;
    max-height: 70vh;
    object-fit: contain;
    display: block;
}
.robot-card-img-box { cursor: zoom-in; }

/* 汽车零部件页面：各系统板块缩幼间距 */
.biz-page-product .biz-section {
    padding: 30px 0;
}
/* 产品图片高度追随宽高比，，，，，cover 填满不露布景 */
.biz-page-product .biz-product-card-img {
    height: auto;
    aspect-ratio: 4 / 3;
    padding: 0;
}
.biz-page-product .biz-product-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.biz-page-product .biz-product-card {
    text-decoration: none;
}
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