/* ============================================
   Support Service Index 页面样式
   对应模板: templates/en/category/support-service-index.html
   ============================================ */

/* 变量定义 */
:root {
    --ssi-primary: #0099F2;
    --ssi-bg-light: rgba(247, 249, 250);
    --ssi-bg-white: #FFFFFF;
    --ssi-container-width: 1226px;
}

/* 通用容器 */
.ssi-container {
    font-family: "Alibaba PuHuiTi";
    width: var(--ssi-container-width);
    max-width: 100%;
    margin: 0 auto;
    padding: 0 20px;
    box-sizing: border-box;
}

/* ============================================
   Hero Banner 区域 - 视频背景
   ============================================ */
.ssi-hero-banner {
    position: relative;
    width: 100%;
    height: calc(100vh - 126px);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.ssi-hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.ssi-bg-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
}

/* 遮罩层 */
.ssi-hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right,
            rgba(0, 0, 0, 0.65) 0%,
            rgba(0, 0, 0, 0.35) 50%,
            rgba(0, 0, 0, 0.2) 100%);
    z-index: 1;
}

/* 右下角 YouTube 按钮 */
.ssi-youtube-btn {
    position: absolute;
    right: 91px;
    bottom: 64px;
    z-index: 10;
    display: inline-flex;
    align-items: center;
    gap: 9px;
    padding: 7.5px 20px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.6);
    color: #222;
    text-decoration: none;
    transition: background 0.2s ease, color 0.2s ease;
    backdrop-filter: blur(8px);
    font-style: Regular;
    font-size: 18px;
    font-weight: 400;
    line-height: 25px;
}

/* hover：背景更亮 + 文字变红 + 图标切换为红色 */
.ssi-youtube-btn:hover {
    background: rgba(255, 255, 255, 0.96);
    color: #FF0000;
}

.ssi-yt-icon {
    width: 32px;
    height: auto;
    display: block;
}

/* banner YouTube 图标：默认/红色两张叠放，hover 淡入淡出切换
   （作用域限定在 .ssi-youtube-btn 内，不影响工程师区域的单个 .ssi-yt-icon） */
.ssi-youtube-btn .ssi-yt-icon {
    position: relative;
    display: inline-block;
    flex: none;
    width: 28px;
    aspect-ratio: 29 / 20;
}

.ssi-youtube-btn .ssi-yt-icon img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: opacity 0.2s ease;
}

.ssi-yt-icon-hover {
    opacity: 0;
}

.ssi-youtube-btn:hover .ssi-yt-icon-default {
    opacity: 0;
}

.ssi-youtube-btn:hover .ssi-yt-icon-hover {
    opacity: 1;
}

/* Hero 内容区 */
.ssi-hero-content {
    position: relative;
    z-index: 2;
    color: #fff;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.ssi-hero-title {
    color: #fff;
    font-style: Bold;
    font-size: 56px;
    font-weight: 700;
    line-height: 64px;
    text-align: center;
}

.ssi-hero-desc {
    font-size: 24px;
    font-weight: 400;
    line-height: 32px;
    margin-top: 8px;
    margin-bottom: 64px;
    color: rgba(255, 255, 255, 0.9);
}

.ssi-hero-btns {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

/* 通用按钮 */
.ssi-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 18px 32px;
    border-radius: 64px;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    min-width: 120px;
    font-size: 18px;
    line-height: 26px;
    text-decoration: none;
}

.ssi-btn-white {
    box-sizing: border-box;
    border: 1px solid rgba(255, 255, 255, 1);
    background-color: transparent;
    border-radius: 109px;
    gap: 4px;
    color: #fff;
    text-decoration: none;
}

.ssi-play-icon {
    width: 20px;
    height: auto;
}

/* 蓝色主按钮 */
.ssi-btn-blue {
    background: #0099F2;
    color: #fff;
}

.ssi-btn-outline {
    background-color: transparent;
    color: var(--ssi-primary);
    border: 1px solid var(--ssi-primary);
}

.ssi-btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

.ssi-contact-us {
    background: linear-gradient(122.69deg, rgba(126.34, 207.83, 255, 1) -21.305%, rgba(0, 153, 242, 1) 43.439%, rgba(3.48, 133.58, 255, 1) 94.205%);
}

/* ============================================
   Banner 按钮三态交互（与 service-and-support 一致）
   ============================================ */

/* Play Video 按钮：hover 整体 60% 透明 */
.ssi-play-btn {
    transition: opacity 0.2s ease;
}

.ssi-play-btn:hover {
    opacity: 0.6;
    transform: none;
}

/* 蓝色按钮：hover 叠白变浅 / press 叠黑变深（inset 阴影可平滑过渡），取消通用 hover 位移与透明度 */
.ssi-btn-blue:hover {
    opacity: 1;
    transform: none;
    box-shadow: inset 0 0 0 999px rgba(255, 255, 255, 0.3);
}

.ssi-btn-blue:active {
    box-shadow: inset 0 0 0 999px rgba(0, 0, 0, 0.18);
}

/* ============================================
   What We Deliver 区域 - 服务路径卡片
   ============================================ */
.ssi-deliver {
    padding: 82px 0 0;
    background: var(--ssi-bg-white);
}

.ssi-what-deliver {
    padding: 120px 0 0;
}

.ssi-section-title {
    height: 36px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 16px;
}

.ssi-section-title .blue-line {
    width: 80px;
    height: 1px;
    background: rgba(0, 153, 242, 1);
}

.ssi-section-title .blue-title {
    height: 36px;
    padding: 0 30px;
    color: rgba(0, 153, 242, 1);
    font-family: Alibaba PuHuiTi;
    font-size: 24px;
    font-weight: 700;
    line-height: 36px;
}

.ssi-section-desc {
    color: rgba(34, 34, 34, 1);
    font-family: Alibaba PuHuiTi;
    font-style: Bold;
    font-size: 48px;
    font-weight: 700;
    line-height: 66px;
    letter-spacing: 0px;
    text-align: center;
}

.ssi-section-desc-blue {
    color: rgba(0, 153, 242, 1);
}

.ssi-section-word {
    color: rgba(69, 78, 102, 1);
    font-family: Alibaba PuHuiTi;
    font-size: 20px;
    font-weight: 400;
    line-height: 40px;
    letter-spacing: 0px;
    text-align: center;
    margin-top: 16px;
}

.ssi-01 {
    margin-top: 3px;
}

/* 左文右图并排布局（弹性宽度，随容器收缩） */
.ssi-01 .ssi-01-warp {
    display: flex;
    align-items: stretch;
}

/* 左侧文字区 */
.ssi-01 .ssi-01-warp .text {
    flex: 1 1 48%;
    min-width: 0;
    margin-right: 32px;
}

/* 蓝色装饰条 */
.ssi-decor-bar {
    width: 96px;
    height: 16px;
    margin-bottom: 16px;
    background: linear-gradient(90deg,
            var(--ssi-primary) 0,
            var(--ssi-primary) 16px,
            rgba(0, 153, 242, 0.6) 16px,
            rgba(0, 153, 242, 0) 100%);
}

.ssi-maintenance-title {
    font-family: "Alibaba PuHuiTi";
    color: rgba(34, 34, 34, 1);
    font-size: 46px;
    font-weight: 700;
    line-height: 65px;
    letter-spacing: 0%;
}

.ssi-maintenance-title-blue {
    font-style: normal;
    color: rgba(0, 153, 242, 1);
}

.ssi-01 .ssi-01-warp .text .d {
    color: rgba(69, 78, 102, 1);
    font-style: Regular;
    font-size: 18px;
    font-weight: 400;
    line-height: 25px;
    letter-spacing: 0px;
    text-align: left;
    margin: 16px 0 28px;
}

.ssi-01 .ssi-01-warp .text .t-list {
    display: grid;
    gap: 8px 0;
}

.ssi-01 .ssi-01-warp .text .t-list .t-item {
    display: flex;
    align-items: center;
}

/* 蓝描边圆角勾选框 */
.ssi-check-icon {
    flex: 0 0 auto;
    width: 16px;
    height: 16px;
    position: relative;
    border: 1.5px solid var(--ssi-primary);
    border-radius: 12px;
    box-sizing: border-box;
}

.ssi-check-icon::after {
    content: '';
    position: absolute;
    left: 4.5px;
    top: 1.5px;
    width: 4px;
    height: 7px;
    border: solid var(--ssi-primary);
    border-width: 0 1.5px 1.5px 0;
    transform: rotate(45deg);
}

.ssi-01 .ssi-01-warp .text .t-list .t-item span:last-child {
    margin-left: 8px;
    color: rgba(69, 78, 102, 1);
    font-size: 20px;
    font-weight: 500;
    line-height: 27px;
    letter-spacing: 0px;
    text-align: left;
}

.ssi-01 .ssi-01-warp .text .ssi-01-btn {
    margin-top: 48px;
    width: fit-content;
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    padding: 14px 32px 14px 32px;
    border-radius: 109px;
    background: rgba(0, 153, 242, 1);
    color: rgba(255, 255, 255, 1);
    font-size: 18px;
    font-weight: 500;
    line-height: 24px;
    letter-spacing: 0px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.ssi-01 .ssi-01-warp .text .ssi-01-btn img {
    margin-left: 8px;
}

/* 右侧图片区 - 比例撑开 */
.ssi-01 .ssi-01-warp .pic {
    flex: 1 1 52%;
    min-width: 0;
    overflow: hidden;
}

.ssi-01 .ssi-01-warp .pic img {
    display: block;
    width: 100%;
    height: 100%;
    aspect-ratio: 640 / 520;
    object-fit: cover;
    border-radius: 4px;
}

/* ============================================
   What We Deliver 手风琴卡片
   默认第一张展开；hover 切换展开卡，鼠标移出后保持最后展开的卡
   （.active 由 JS 维护）
   ============================================ */
.ssi-deliver-cards {
    display: flex;
    gap: 8px;
    width: 100%;
    aspect-ratio: 1920 / 528;
    min-height: 320px;
    margin-top: 48px;
    overflow: hidden;
}

/* 折叠态：均分剩余宽度 */
.ssi-deliver-card {
    position: relative;
    flex: 1 1 0;
    overflow: hidden;
    cursor: pointer;
    transition: flex 0.35s ease;
}

/* 展开态（.active 由 JS 控制：默认第一张展开；
   hover 切换到目标卡，鼠标移出后保持最后展开的卡）
   展开卡宽度约为折叠卡的 4.5 倍 */
.ssi-deliver-card.active {
    flex: 4.5 1 0;
}

.ssi-deliver-card-inner {
    display: block;
    position: relative;
    height: 100%;
    overflow: hidden;
}

.ssi-deliver-card-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.ssi-deliver-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: transform 0.5s ease;
}

.ssi-deliver-card.active .ssi-deliver-card-img img {
    transform: scale(1.04);
}

/* 渐变遮罩：保证文字可读，背景取接口 note 字段注入的完整 linear-gradient 值（--deliver-mask-bg），
   未注入时回退默认青绿渐变 */
.ssi-deliver-card-inner::after {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--deliver-mask-bg, linear-gradient(160deg, rgba(4, 103, 110, 0.9) 0%, rgba(4, 103, 110, 0) 60%));
    z-index: 1;
}

/* 底部内容面板：折叠态只显示 图标+标题 */
.ssi-deliver-card-panel {
    position: absolute;
    inset: 0;
    z-index: 3;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 28px 0 67px 28px;
    box-sizing: border-box;
    transition: padding-bottom 0.35s ease;
}

.ssi-deliver-card-icon {
    width: 32px;
    height: 32px;
    object-fit: fill;
    display: block;
    margin-bottom: 16px;
}


.ssi-deliver-card-title {
    color: #fff;
    font-family: Alibaba PuHuiTi;
    font-size: 28px;
    font-weight: 700;
    line-height: 40px;
    text-align: left;
    margin: 0;
    max-width: 560px;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    overflow: hidden;
    text-overflow: ellipsis;
    overflow-wrap: break-word;
    transition: min-height 0.35s ease;
    min-height: 80px;
}

.ssi-deliver-card.active .ssi-deliver-card-title {
    min-height: 0;
}

.ssi-deliver-card.active .ssi-deliver-card-panel {
    padding-bottom: 48px;
}


/* 折叠态（非 .active）：标题固定 2 行高度 + 面板底部 69px，
   让图标统一距卡片底部 165px（= 69 padding + 80 title + 16 margin）。
   展开卡（.active）不受影响。165 为桌面端设计值，故仅在 ≥1025px 应用，
   平板/移动端由各自媒体查询维持原行为。 */
@media screen and (min-width: 1025px) {
    /* .ssi-deliver-card:not(.active) .ssi-deliver-card-panel {
        padding-bottom: 69px;
    } */

    /* .ssi-deliver-card:not(.active) .ssi-deliver-card-title {
        min-height: 80px;
    } */
}

/* 展开态才显示：描述（占位展开）+ 按钮（绝对定位底部滑入，不占位）
   收起（active 移除）时走本规则：布局动画提速，尽早结束，
   缩短与卡片宽度动画的并发布局窗口；opacity 加速淡出遮盖 max-height 死区 */
.ssi-deliver-card-desc {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    max-width: 560px;
    margin: 0;
    margin-bottom: 0;
    color: #fff;
    font-family: Alibaba PuHuiTi;
    font-size: 18px;
    font-weight: 400;
    line-height: 25px;
    text-align: left;
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height 0.18s ease, opacity 0.12s ease, margin-top 0.18s ease,
        margin-bottom 0.18s ease;
}

.ssi-deliver-card-desc-icon {
    flex: 0 0 auto;
    width: 16px;
    height: 16px;
    margin-top: 4px;
    object-fit: contain;
    display: block;
}

/* 按钮：脱离文档流，锚定卡片左下角；折叠态藏在卡片底边之下（由卡片 overflow:hidden 裁切），
   hover/active 时从底部滑上来 —— 不改变面板布局高度 */
.ssi-read-more.ssi-read-more {
    position: absolute;
    left: 28px;
    bottom: 28px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
    padding: 14px 32px;
    border: 1px solid #fff;
    border-radius: 109px;
    color: #fff;
    background: rgba(34, 34, 34, 0.3);
    font-family: Alibaba PuHuiTi;
    font-size: 18px;
    font-weight: 400;
    line-height: 24px;
    text-decoration: none;
    white-space: nowrap;
    transform: translateY(calc(100% + 28px));
    opacity: 0;
    transition: transform 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94),
        opacity 0.25s ease, background 0.2s ease;
}

/* .ssi-read-more:hover {
    background: rgba(255, 255, 255, 0.24);
} */

/* 展开卡（.active）：描述占位展开（预留按钮空间），按钮从底部滑入
   展开（active 添加）走本规则：过渡参数取自"变化后"的样式，
   在此显式声明 0.3s + 0.18s 延迟 —— 收起提速（见基础规则）、展开保持慢节奏，
   由此实现收起/展开的不对称时序 */
.ssi-deliver-card.active .ssi-deliver-card-desc {
    max-height: 240px;
    margin-top: 16px;
    margin-bottom: 88px;
    /* 36 间距 + 52 按钮高，避免文字被滑入的按钮遮挡 */
    opacity: 1;
    transition: max-height 0.3s ease, margin-top 0.3s ease,
        margin-bottom 0.3s ease, opacity 0.25s ease;
    transition-delay: 0.18s;
}

.ssi-deliver-card.active .ssi-read-more {
    transform: translateY(0);
    opacity: 1;
    transition-delay: 0.18s;
}

/* ============================================
   Service In Action 区域 - 客户案例
   ============================================ */
.ssi-cases {
    padding: 64px 0 84px;
    background: var(--ssi-bg-light);
}

/* 三列上图下文卡片 */
.ssi-case-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    margin-top: 48px;
    max-width: 1226px;
}

.ssi-case-box {
    display: flex;
    flex-direction: column;
    background: rgba(255, 255, 255, 1);
    box-shadow: 0 1.67px 16.7px 0 rgba(0, 0, 0, 0.1);
    text-decoration: none;
    transition: box-shadow 0.3s ease;
}

.ssi-case-box:hover {
    box-shadow: 0 18px 32px 16px rgba(0, 0, 0, 0.03), 0 12px 24px 0 rgba(0, 0, 0, 0.05), 0 8px 16px -8px rgba(0, 0, 0, 0.06);
}

/* 图片区 - 比例撑开 */
.ssi-case-pic {
    aspect-ratio: 392 / 220;
    overflow: hidden;
}

.ssi-case-pic img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.ssi-case-box:hover .ssi-case-pic img {
    transform: scale(1.04);
}

/* 文字区 */
.ssi-case-overlay {
    padding: 16px 24px 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.ssi-case-overlay .ssi-case-title {
    color: rgba(0, 153, 242, 1);
    font-family: Alibaba PuHuiTi;
    font-style: Regular;
    font-size: 16px;
    font-weight: 400;
    line-height: 22px;
    letter-spacing: 0%;
    text-align: left;
    margin: 0;
}

.ssi-case-overlay .ssi-case-word {
    color: rgba(34, 34, 34, 1);
    font-family: Alibaba PuHuiTi;
    font-style: 85 Bold;
    font-size: 24px;
    font-weight: 700;
    line-height: 32px;
    letter-spacing: 0px;
    text-align: left;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 案例描述：灰色，最多 3 行省略 */
.ssi-case-overlay .ssi-case-desc {
    color: rgba(69, 78, 102, 1);
    font-family: Alibaba PuHuiTi;
    font-style: Regular;
    font-size: 16px;
    font-weight: 400;
    line-height: 24px;
    letter-spacing: 0px;
    text-align: left;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ============================================
   Behind every recovery 区域 - 工程师介绍
   ============================================ */
.ssi-engineer {
    padding: 120px 0 100px;
    position: relative;
}

.ssi-engineer-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.ssi-engineer-container {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.ssi-engineer-title {
    color: rgba(34, 34, 34, 1);
    font-family: Alibaba PuHuiTi;
    font-style: Bold;
    font-size: 48px;
    font-weight: 700;
    line-height: 66px;
    letter-spacing: 0px;
    text-align: left;
    margin-bottom: 16px;
    position: relative;
}

.ssi-engineer-desc {
    color: rgba(69, 78, 102, 1);
    font-family: Alibaba PuHuiTi;
    font-style: Regular;
    font-size: 18px;
    font-weight: 400;
    line-height: 25px;
    letter-spacing: 0px;
    text-align: left;
    margin-bottom: 52px;
    max-width: 650px;
}

.ssi-engineer-btn {
    padding: 10px 20px;
    border-radius: 66px;
    background-color: rgba(0, 153, 242, 1);
    color: #fff !important;
    font-family: 'Alibaba PuHuiTi';
    font-size: 18px;
    font-weight: 500;
    line-height: 25px;
    letter-spacing: 0px;
    text-align: left;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    transition: background 0.3s ease;
}

.ssi-engineer-btn img {
    width: 32px;
    height: 32px;
    margin-left: 10px;
}

.ssi-engineer-content {
    position: relative;
    width: 53.017944%;
    margin-top: -10px;
}

.ssi-engineer-content .ssi-engineer-quotation {
    position: absolute;
    top: -40px;
    left: 0;
    width: 83px;
    height: 66px;
}

.ssi-engineer-img {
    width: 40.783034%;
}

.ssi-engineer-img img {
    width: 100%;
}

/* ============================================
   Need service now? CTA 区域
   ============================================ */
.ssi-cta {
    padding: 84px 0;
    background: rgba(39, 181, 255, 1);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.ssi-cta-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.ssi-cta-content {
    position: relative;
    z-index: 1;
}

.ssi-cta-title {
    color: rgba(255, 255, 255, 1);
    font-family: Alibaba PuHuiTi;
    font-style: Bold;
    font-size: 48px;
    font-weight: 700;
    line-height: 66px;
    letter-spacing: 0px;
    text-align: center;
    margin-bottom: 32px;
}

.ssi-cta-desc {
    color: rgba(255, 255, 255, 1);
    font-family: Alibaba PuHuiTi;
    font-style: Regular;
    font-size: 20px;
    font-weight: 400;
    line-height: 40px;
    letter-spacing: 0px;
    text-align: center;
    margin-bottom: 24px;
}

.ssi-cta-btns {
    display: flex;
    gap: 24px;
    justify-content: center;
    flex-wrap: wrap;
}

.ssi-cta .ssi-btn-white {
    background-color: #fff;
    color: var(--ssi-primary);
}

.ssi-cta .ssi-btn-outline {
    background-color: transparent;
    color: #fff;
    border: 1px solid #fff;
}

/* ============================================
   视频弹窗 Modal
   ============================================ */
.ssi-video-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.ssi-video-modal.active {
    opacity: 1;
    visibility: visible;
}

.ssi-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(34, 34, 34, .6);
    backdrop-filter: blur(6px);
}

.ssi-modal-content {
    position: relative;
    z-index: 1;
    width: 60%;
    max-width: 960px;
    transform: scale(0.92);
    transition: transform 0.3s ease;
}

.ssi-video-modal.active .ssi-modal-content {
    transform: scale(1);
}

.ssi-modal-close {
    position: absolute;
    top: 14px;
    right: 14px;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: #fff;
    color: #333;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
    transition: all 0.25s ease;
    z-index: 3;
}

.ssi-modal-close:hover {
    background: #f5f5f5;
    transform: rotate(90deg);
}

.ssi-modal-video-wrap {
    position: relative;
    width: 100%;
    padding-top: 56.25%;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.ssi-modal-video-wrap video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: #000;
}

/* ============================================
   响应式
   ============================================ */

@media screen and (max-width: 1024px) {
    .ssi-hero-banner {
        min-height: 480px;
    }

    .ssi-hero-title {
        font-size: 40px;
        line-height: 1.25;
        margin-bottom: 14px;
    }

    .ssi-hero-desc {
        font-size: 20px;
        line-height: 30px;
    }

    .ssi-section-desc,
    .ssi-engineer-title,
    .ssi-cta-title {
        font-size: 38px;
        line-height: 52px;
    }

    .ssi-section-word,
    .ssi-cta-desc {
        font-size: 18px;
        line-height: 32px;
    }

    .ssi-maintenance-title {
        font-size: 34px;
        line-height: 46px;
    }

    .ssi-01 .ssi-01-warp .text .ssi-01-btn {
        margin-top: 36px;
    }

    /* 手风琴卡片 - 平板 */
    .ssi-deliver-cards {
        min-height: 420px;
    }

    .ssi-deliver-card-panel {
        padding: 32px;
    }

    .ssi-deliver-card-title {
        font-size: 22px;
        line-height: 30px;
    }

    .ssi-deliver-card-desc {
        font-size: 14px;
        line-height: 22px;
    }

    /* 提升选择器权重以覆盖 .ssi-read-more.ssi-read-more 基础规则 */
    .ssi-deliver-cards .ssi-read-more {
        /* 与平板面板 padding: 32px 对齐（基础规则锚点是 28px） */
        left: 32px;
        bottom: 32px;
        padding: 10px 22px;
        font-size: 15px;
    }

    .ssi-case-list {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .ssi-engineer {
        padding: 88px 0;
    }

    .ssi-engineer-desc {
        margin-bottom: 36px;
    }

    .ssi-what-deliver {
        padding-top: 80px;
    }

    /* 工程师区域 - 平板：改纵向布局，引号图改为文档流避免压字 */
    .ssi-engineer-container {
        flex-direction: column;
        gap: 32px;
        align-items: flex-start;
    }

    .ssi-engineer-content,
    .ssi-engineer-img {
        width: 100%;
    }

    .ssi-engineer-content {
        margin-top: 0;
    }

    .ssi-engineer-content .ssi-engineer-quotation {
        position: static;
        display: block;
        width: 58px;
        height: auto;
        margin-bottom: 12px;
    }

    .ssi-modal-content {
        width: 76%;
    }
}

/* 触屏平板：手风琴无 hover，改纵向堆叠并全部展开 */
@media screen and (min-width: 769px) and (max-width: 1024px) and (hover: none) {
    .ssi-deliver-cards {
        flex-direction: column;
        aspect-ratio: auto;
        min-height: 0;
        gap: 14px;
    }

    .ssi-deliver-card,
    .ssi-deliver-card.active {
        flex: none;
        min-height: 320px;
    }

    .ssi-deliver-card-desc,
    .ssi-deliver-card.active .ssi-deliver-card-desc {
        max-height: none;
        margin-top: 12px;
        margin-bottom: 0;
        opacity: 1;
        transition-delay: 0s;
    }

    /* 纵向堆叠常显：按钮回归文档流（滑入动画仅用于桌面横向手风琴） */
    .ssi-deliver-cards .ssi-read-more,
    .ssi-deliver-card.active .ssi-read-more {
        position: static;
        transform: none;
        margin-top: 36px;
        opacity: 1;
        transition-delay: 0s;
    }
}

@media screen and (max-width: 768px) {
    .ssi-container {
        padding: 0 16px;
    }

    .ssi-hero-banner {
        height: auto;
        min-height: 480px;
    }

    .ssi-hero-content {
        padding: 60px 0 42px;
    }

    .ssi-hero-title {
        font-size: 32px;
        line-height: 40px;
        margin-bottom: 10px;
    }

    .ssi-hero-desc {
        font-size: 16px;
        line-height: 24px;
        margin-bottom: 28px;
    }

    .ssi-hero-btns,
    .ssi-cta-btns {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
        width: 100%;
        max-width: 320px;
        margin-left: auto;
        margin-right: auto;
    }

    .ssi-btn {
        padding: 12px 24px;
        font-size: 16px;
        line-height: 24px;
    }

    /* 仅 Hero/CTA 按钮组内按钮全宽，避免误伤其他 .ssi-btn */
    .ssi-hero-btns .ssi-btn,
    .ssi-cta-btns .ssi-btn {
        width: 100%;
        min-width: 0;
        box-sizing: border-box;
    }

    .ssi-youtube-btn {
        right: 16px;
        bottom: 24px;
        padding: 5px 10px;
        font-size: 11px;
        gap: 4px;
    }

    .ssi-youtube-btn .ssi-yt-icon {
        width: 18px;
    }

    .ssi-engineer-btn .ssi-yt-icon {
        width: 18px;
    }

    .ssi-deliver,
    .ssi-cases,
    .ssi-engineer,
    .ssi-cta {
        padding: 60px 0;
    }

    .ssi-what-deliver {
        padding-top: 60px;
    }

    .ssi-section-title {
        height: auto;
        margin-bottom: 14px;
    }

    .ssi-section-title .blue-line {
        width: 42px;
    }

    .ssi-section-title .blue-title {
        height: auto;
        padding: 0 14px;
        font-size: 18px;
        line-height: 28px;
        text-align: center;
    }

    .ssi-section-desc,
    .ssi-engineer-title,
    .ssi-cta-title {
        font-size: 28px;
        line-height: 38px;
    }

    .ssi-section-word,
    .ssi-cta-desc {
        font-size: 16px;
        line-height: 26px;
        margin-top: 20px;
    }

    .ssi-01 {
        margin-top: 32px;
    }

    .ssi-01 .ssi-01-warp {
        flex-direction: column-reverse;
        gap: 24px;
        align-items: stretch;
    }

    .ssi-01 .ssi-01-warp .text {
        margin-right: 0;
    }

    .ssi-maintenance-title {
        font-size: 28px;
        line-height: 38px;
    }

    .ssi-01 .ssi-01-warp .text .d {
        font-size: 15px;
        line-height: 24px;
        margin: 12px 0 20px;
    }

    .ssi-01 .ssi-01-warp .text .t-list .t-item span:last-child {
        font-size: 15px;
        line-height: 23px;
    }

    .ssi-01 .ssi-01-warp .text .ssi-01-btn {
        width: 100%;
        margin-top: 28px;
        padding: 12px 20px;
        font-size: 16px;
        box-sizing: border-box;
    }

    /* 手风琴卡片 - 移动端：纵向堆叠，内容全部展开（触屏无 hover） */
    .ssi-deliver-cards {
        flex-direction: column;
        aspect-ratio: auto;
        height: auto;
        gap: 14px;
        margin-top: 32px;
    }

    .ssi-deliver-card,
    .ssi-deliver-card.active {
        flex: none;
        min-height: 320px;
    }

    .ssi-deliver-card-panel {
        padding: 76px 20px 28px;
    }

    .ssi-deliver-card-desc,
    .ssi-deliver-card.active .ssi-deliver-card-desc {
        max-height: none;
        margin-top: 16px;
        margin-bottom: 0;
        opacity: 1;
        transition-delay: 0s;
    }

    /* 纵向堆叠常显：按钮回归文档流（滑入动画仅用于桌面横向手风琴） */
    .ssi-deliver-cards .ssi-read-more,
    .ssi-deliver-card.active .ssi-read-more {
        position: static;
        transform: none;
        margin-top: 36px;
        opacity: 1;
        transition-delay: 0s;
    }

    .ssi-case-list {
        grid-template-columns: 1fr;
        gap: 16px;
        margin-top: 32px;
    }

    .ssi-engineer-desc {
        font-size: 16px;
        line-height: 24px;
        margin-bottom: 28px;
    }

    .ssi-engineer-btn {
        width: 100%;
        box-sizing: border-box;
        padding: 10px 18px;
        font-size: 15px;
        text-align: center;
    }

    .ssi-modal-content {
        width: 90%;
        max-width: none;
    }

    .ssi-modal-close {
        top: 8px;
        right: 8px;
        width: 28px;
        height: 28px;
    }
}

@media screen and (max-width: 480px) {
    .ssi-hero-banner {
        min-height: 390px;
    }

    .ssi-hero-title {
        font-size: 28px;
        line-height: 36px;
    }

    .ssi-section-desc,
    .ssi-engineer-title,
    .ssi-cta-title {
        font-size: 24px;
        line-height: 34px;
    }

    /* 手风琴卡片 - 小屏 */
    .ssi-deliver-card,
    .ssi-deliver-card.active {
        min-height: 300px;
    }

    .ssi-deliver-card-title {
        font-size: 20px;
        line-height: 28px;
    }

    .ssi-deliver-card-desc {
        font-size: 14px;
        line-height: 22px;
    }

    /* 提升选择器权重以覆盖 .ssi-read-more.ssi-read-more 基础规则 */
    .ssi-deliver-cards .ssi-read-more {
        width: 100%;
        padding: 12px 16px;
        box-sizing: border-box;
    }

}