/* ============================================================
 * 江行智能官网 (jxzn) — 公共样式（header + footer + 基础）
 * 设计稿基准：1920px PC 端
 * 字体：思源黑体 → 系统中文字体回退
 * ============================================================ */

/* ============================================================
 * CSS 变量（设计 token）
 *
 * 流式缩放规则（桌面 1280–3840 区间）：
 *   1. 设计基准：1920×1080
 *   2. 任何尺寸：clamp(下限px, 设计px/1920 * 100vw, 上限px)
 *   3. 下限保证字号在 1280 仍可读
 *   4. 上限 = 设计px × 2（在 3840 4K 时刚好 2×，与位置 vw/vh 同步）
 *
 * 字号下限速查（按层级）：
 *   H1 主标题     ≥ 24px
 *   H2 副标题     ≥ 20px
 *   H3 小标题     ≥ 16px
 *   body 正文     ≥ 14px
 *   caption 小字  ≥ 12px
 * ============================================================ */
:root {
  /* 颜色 */
  --jxzn-bg: #000;
  --jxzn-text: #FFFFFF;
  --jxzn-text-dim: rgba(255, 255, 255, 0.38);
  --jxzn-text-gray: #888;
  --jxzn-text-hover: rgba(255, 255, 255, 0.85);

  /* 字体 */
  --jxzn-font: "Source Han Sans CN", "Source Han Sans SC", "PingFang SC",
               "Microsoft YaHei", "微软雅黑", -apple-system, BlinkMacSystemFont,
               "Helvetica Neue", Arial, sans-serif;

  /* 排版（流式 clamp）
     公式：clamp(floor, design/1920*100vw, design*1.5) */
  --jxzn-fs-nav:          clamp(16px, 1.0417vw, 40px);   /* 设计 20 / 4K 40 */
  --jxzn-fs-footer-title: clamp(16px, 1.0417vw, 40px);   /* 设计 20 / 4K 40 */
  --jxzn-fs-footer-item:  clamp(14px, 0.9375vw, 36px);   /* 设计 18 / 4K 36 */

  /* 统一语义字号（2026-05-30）：只统一「副标题」和「正文」两类高频文本，
     大标题各屏保持 Figma 精确值不并入 */
  --jxzn-fs-subtitle:     clamp(15px, 1.1458vw, 44px);   /* 副标题 设计 22 / 4K 44 */
  --jxzn-fs-body:         clamp(13px, 0.8333vw, 32px);   /* 正文 设计 16 / 4K 32（=全站主力值）*/

  /* 布局基准 */
  --jxzn-base-width: 1920;     /* 设计稿宽度（无单位，便于 calc）*/
  --jxzn-desktop-min: 1280px;  /* 桌面下限：低于此切换为 stacked（后期）*/
  --jxzn-desktop-max: 3840px;  /* 桌面上限：4K */
  --jxzn-max-w: 1920px;        /* 兼容旧引用 */
}

/* Reset */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  width: 100%;
  margin: 0;
  padding: 0;
  /* iOS Safari 横屏 / 旋转时禁止自动放大字号，破坏布局 */
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--jxzn-font);
  background: var(--jxzn-bg);
  color: var(--jxzn-text);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  /* iOS 点击链接/按钮时去掉灰色高亮方块 */
  -webkit-tap-highlight-color: transparent;
}

a, button {
  /* 同上，逐元素兜底（部分 iOS 版本 body 上的不继承到这些）*/
  -webkit-tap-highlight-color: transparent;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

ul, li {
  list-style: none;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

/* ============================================================
 * 全屏分段布局
 *   - Hero 屏：height: 100vh（首屏必须刚好一屏）
 *   - 其它屏：min-height: 100vh，内容多了向下扩，矮屏不裁切
 * ============================================================ */

.jxzn-screen {
  position: relative;
  width: 100%;
  min-height: 100vh;      /* 改：内容能撑高，避免矮屏裁切 */
  overflow: hidden;
}

.jxzn-screen__inner {
  position: relative;
  width: 100%;
  min-height: 100vh;      /* 同上，让子元素 100% 能解析 */
}

/* 首屏 hero：仍然锁 100vh，保证"刚好一屏"的视觉效果
   100dvh 回退：iOS Safari 地址栏占空间时 100vh 比可视区大，
   底部"向下滚动"提示被地址栏盖住；dvh 跟随可视区动态调整。
   桌面浏览器 dvh === vh，无影响 */
.jxzn-screen--hero {
  background: #000;       /* 兜底色，图片/视频加载前显示 */
  color: #fff;
  height: 100vh;
  height: 100dvh;
  min-height: 100vh;
  min-height: 100dvh;
}
.jxzn-screen--hero .jxzn-screen__inner {
  height: 100%;
}

/* hero 背景层（支持 <img> 或 <video> 切换） */
.jxzn-hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}
.jxzn-hero__media img,
.jxzn-hero__media video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;          /* 4K 图，铺满裁切（B 方案）*/
  object-position: center;
  user-select: none;
  pointer-events: none;
}

/* 文字内容压在背景之上 */
.jxzn-hero__content {
  z-index: 2;
}

/* hero 内容（按 Figma 1920×1080 精确定位）
 * 标题盒：左 176 / 上 320 / 宽 667 / 高 198
 * 徽章盒：左 184 / 上 542 / 宽 326.88 / 高 37.51
 *        （= 标题 bottom 518 + 24）
 */
.jxzn-hero__content {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.jxzn-hero__content > * { pointer-events: auto; }

.jxzn-hero__title {
  position: absolute;
  left: 9.1667vw;                           /* 176/1920 */
  top: 16.6667vw;                           /* 320/1920（用 vw 跟字号同步，避免 viewport 矮时重叠）*/
  width: 34.7396vw;                         /* 667/1920 */
  /* height 198 由 2 行 × line-height 99 撑出 */
  font-family: "Source Han Sans SC", var(--jxzn-font);
  font-size: clamp(28px, 3.5417vw, 136px);  /* 设计 68 / 下限 28 / 4K 136 */
  font-weight: 100;                         /* Thin（最细） */
  line-height: 1.4559;                      /* 99/68，unitless 跟字号 */
  letter-spacing: 0.1em;                    /* 10%，em 跟字号 */
  color: #FFFFFF;
  margin: 0;
  white-space: nowrap;                      /* 强制不换行 */
}
.jxzn-hero__title-em {
  font-weight: 700;                         /* Bold「物理AI」 */
}
.jxzn-hero__title-line2 {
  display: block;                           /* 单独一行 */
  white-space: nowrap;
}

.jxzn-hero__badge {
  position: absolute;
  left: 9.5833vw;                           /* 184/1920 */
  top: 28.2292vw;                           /* 542/1920（vw 同上）*/
  width: 17.025vw;                          /* 326.88/1920 */
  min-width: 220px;                         /* 小屏下不至于挤成一团 */
  height: 1.9536vw;                         /* 37.51/1920 */
  min-height: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 1em;                           /* em 跟字号，胶囊形状跟着字一起呼吸 */
  border: 1px solid #FFFFFF;
  border-radius: 999px;                     /* corner-radius 170.11 ≈ 完全胶囊 */
  background: transparent;
  font-family: "Source Han Sans SC", var(--jxzn-font);
  font-size: clamp(12px, 1.1161vw, 43px);   /* 设计 21.43 / 下限 12 / 4K 43 */
  font-weight: 400;                         /* Normal */
  letter-spacing: 0.1em;                    /* 10% */
  color: #FFFFFF;
  white-space: nowrap;
  box-sizing: border-box;
}

/* ============================================================
 * Screen 02：物理AI 重塑工业现场（视频）
 * Figma node 5:846
 * ============================================================ */
.jxzn-screen--video {
  background: #000;
  color: #fff;
}

/* 第二屏顶部业务数据浮层条（永远显示，即使视频在播）
   - 顶部居中、距 header 120px
   - 半透明黑色 + 高斯模糊 = 胶囊形磨砂玻璃条
   - pointer-events:none 不挡 video 点击切播放
   - z-index 高于 video(1)、低于全局 header */
.jxzn-screen--video .jxzn-video__stats-bar {
  position: absolute;
  top: auto;
  bottom: 80px;                          /* 改到视频下部，距底 80px */
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  padding: 14px 38px;
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: 999px;
  color: #fff;
  font-family: "Source Han Sans SC", var(--jxzn-font);
  font-size: 20px;                       /* 32 → 20，整体缩小 */
  font-weight: 700;
  letter-spacing: 0.04em;
  white-space: nowrap;
  pointer-events: none;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.55);
}

/* 4 段独立 inline-block —— animations.js 做 stagger 依次淡入，不带位移 */
.jxzn-screen--video .jxzn-video__stats-bar .jxzn-video__stats-item {
  display: inline-block;
}

/* 段与段之间自动插入 · 分隔（属于后段的 ::before，opacity 跟段落联动） */
.jxzn-screen--video .jxzn-video__stats-bar .jxzn-video__stats-item + .jxzn-video__stats-item::before {
  content: "·";
  display: inline-block;
  margin: 0 0.5em;
  opacity: 0.85;
}

.jxzn-video__player {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: #000;
  z-index: 1;
}

/* 标题盒：左 715 / 上 81 / 宽 491 / 高 99 */
.jxzn-video__title {
  position: absolute;
  left: 37.2396vw;              /* 715/1920 */
  top: 7.5vh;                   /* 81/1080 */
  width: 25.5729vw;             /* 491/1920 */
  /* height 99 = line-height */
  margin: 0;
  font-family: "Source Han Sans SC", var(--jxzn-font);
  font-size: clamp(28px, 2.7083vw, 104px);  /* 52/1920，4K ceiling 2× */
  font-weight: 100;             /* Thin（非加粗） */
  line-height: 1.9038;          /* 99/52 */
  letter-spacing: 0;            /* 0% */
  color: #FFFFFF;
  white-space: nowrap;
  z-index: 3;
  text-align: center;
}
.jxzn-video__title strong {
  font-weight: 700;             /* Bold「物理AI」 */
}

/* 副标题：数据条，紧跟主标题下方居中 */
.jxzn-video__subtitle {
  position: absolute;
  top: 18.5vh;                            /* 主标题底部 + 间距 */
  left: 50%;
  transform: translateX(-50%);
  margin: 0;
  font-family: "Source Han Sans SC", var(--jxzn-font);
  font-size: var(--jxzn-fs-subtitle);     /* 统一副标题（原 clamp 24，并入 22）*/
  font-weight: 300;
  line-height: 1.5;
  letter-spacing: 0.05em;
  color: rgba(255, 255, 255, 0.82);
  white-space: nowrap;
  text-align: center;
  z-index: 3;
}
.jxzn-video__subtitle:lang(en) {
  letter-spacing: 0.02em;                 /* 英文字距小一点 */
}

/* 播放按钮：左 910 / 上 452 / 100×100 */
.jxzn-video__btn {
  position: absolute;
  left: 47.3958vw;              /* 910/1920 */
  top: 41.8519vh;               /* 452/1080 */
  width: 5.2083vw;              /* 100/1920 */
  height: 5.2083vw;             /* 保持正方形 */
  max-width: 100px;
  max-height: 100px;
  margin: 0;
  padding: 0;
  background: rgba(255, 255, 255, 0.15);
  border: 2px solid rgba(255, 255, 255, 0.8);
  border-radius: 50%;
  cursor: pointer;
  z-index: 4;
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  outline: none;
}
.jxzn-video__btn:hover {
  background: rgba(255, 255, 255, 0.3);
  border-color: #fff;
  transform: scale(1.08);
}
.jxzn-video__btn svg {
  width: 36%;
  height: 36%;
  fill: #fff;
  margin-left: 6%;              /* 三角形视觉居中微调 */
  pointer-events: none;
}
.jxzn-video__btn.is-hidden {
  opacity: 0;
  pointer-events: none;
  transform: scale(0.5);
}
#screen-2{
  background: #000 url("../img/hero-bg.webp") center center / cover no-repeat;
  height: 100vh;
  min-height: 100vh;
}
#screen-2 .jxzn-screen__inner {
  z-index: 1;
  height: 100%;
  min-height: 100%;
}

#screen-2 .jxzn-video__player {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  background: #000 url("../img/hero-bg.webp") center center / cover no-repeat;
  z-index: 1;
}

.jxzn-video__copy {
  position: absolute;
  top: clamp(72px, 10vh, 116px);
  left: 50%;
  z-index: 5;
  width: min(86vw, 1120px);
  transform: translateX(-50%);
  text-align: center;
  pointer-events: none;
}

.jxzn-video__headline-title {
  margin: 0;
  color: #fff;
  font-family: "Source Han Sans SC", var(--jxzn-font);
  font-size: 48px;
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: 0;
  text-align: center;
  white-space: normal;
  overflow-wrap: anywhere;
  word-break: normal;
  text-shadow: 0 8px 20px rgba(0, 0, 0, 0.58);
}

.jxzn-video__actions {
  position: absolute;
  left: 50%;
  bottom: clamp(64px, 8.8vh, 128px);
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  width: min(88vw, 560px);
  transform: translateX(-50%);
  white-space: nowrap;
}

.jxzn-video__case-link {
  min-width: 228px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 30px;
  border: 1px solid rgba(255, 255, 255, 0.95);
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.08);
  background-clip: padding-box;
  color: #fff;
  font-family: "Source Han Sans SC", var(--jxzn-font);
  font-size: 26px;
  font-weight: 400;
  line-height: 1;
  letter-spacing: 0;
  text-align: center;
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.34);
  transition: color 0.22s ease, background 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease, transform 0.22s ease;
}

.jxzn-video__case-link span {
  display: block;
  transform: translateY(-1px);
}

.jxzn-video__case-link:hover,
.jxzn-video__case-link:focus-visible {
  border-color: transparent;
  background:
    linear-gradient(90deg, #c5f0ff 0%, #66a8ff 100%) padding-box,
    linear-gradient(90deg, #c5f0ff 0%, #66a8ff 100%) border-box;
  color: #000;
  font-weight: 700;
  box-shadow: 0 12px 30px rgba(79, 156, 255, 0.34);
}

.jxzn-video__case-link:hover,
.jxzn-video__case-link:focus-visible {
  transform: translateY(-1px);
}

.jxzn-video__case-link:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.88);
  outline-offset: 4px;
}
.jxzn-screen--video .jxzn-screen__inner > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}

.jxzn-screen--video .jxzn-video__title {
  left: 50%;
  top: 6.9444vh;
  width: auto;
  transform: translateX(-50%);
  font-size: clamp(34px, 2.7083vw, 104px);
  font-weight: 100;
  line-height: 1.25;
  text-align: center;
}

.jxzn-video__layout {
  position: absolute;
  top: 17.3148vh;
  left: 18.75vw;
  width: 62.6563vw;
  min-width: 860px;
  display: grid;
  grid-template-columns: minmax(560px, 45.8333vw) minmax(190px, 14.5vw);
  gap: 2.3438vw;
  align-items: center;
  z-index: 3;
}

.jxzn-video__card {
  position: relative;
  width: 45.8333vw;
  height: auto;
  max-width: 880px;
  aspect-ratio: 16 / 9.01;
  overflow: hidden;
  border-radius: 20px;
  background: #2d2d2d;
}

.jxzn-screen--video .jxzn-video__player {
  position: relative;
  inset: auto;
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: #2d2d2d;
  z-index: 1;
}

.jxzn-screen--video .jxzn-video__btn {
  left: 50%;
  top: 50%;
  width: clamp(72px, 6.0417vw, 116px);
  height: clamp(72px, 6.0417vw, 116px);
  max-width: none;
  max-height: none;
  border: 0;
  background: rgba(226, 226, 226, 0.92);
  transform: translate(-50%, -50%);
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}

.jxzn-screen--video .jxzn-video__btn:hover {
  background: #fff;
  transform: translate(-50%, -50%) scale(1.06);
}

.jxzn-screen--video .jxzn-video__btn svg {
  width: 33%;
  height: 33%;
  fill: #2d2d2d;
  margin-left: 5%;
}

.jxzn-screen--video .jxzn-video__btn.is-hidden {
  transform: translate(-50%, -50%) scale(0.5);
}

.jxzn-video__stats {
  display: grid;
  gap: 3.1481vh;
  margin: 0;
  padding: 0;
  list-style: none;
}

.jxzn-video__stat {
  display: grid;
  grid-template-columns: clamp(64px, 4.2708vw, 82px) 1fr;
  gap: 1.4063vw;
  align-items: center;
}

.jxzn-video__stat-icon {
  width: clamp(64px, 4.2708vw, 82px);
  height: clamp(64px, 4.2708vw, 82px);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1.5px solid #7db9ff;
  border-radius: 50%;
  color: #7db9ff;
}

.jxzn-video__stat-icon svg {
  width: 62%;
  height: 62%;
  fill: none;
  stroke: currentColor;
  stroke-width: 3.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.jxzn-video__stat-copy {
  display: grid;
  gap: 0.463vh;
  color: rgba(255, 255, 255, 0.72);
  font-family: "Source Han Sans SC", var(--jxzn-font);
  font-size: clamp(15px, 1.0417vw, 40px);
  font-weight: 300;
  line-height: 1.25;
  white-space: nowrap;
}

.jxzn-video__stat-copy strong {
  color: #fff;
  font-size: clamp(30px, 2.0833vw, 80px);
  font-weight: 700;
  line-height: 1.08;
}

@media (max-width: 1200px) {
  .jxzn-video__layout {
    left: 6vw;
    width: 88vw;
    min-width: 0;
    grid-template-columns: minmax(0, 1fr) minmax(160px, 220px);
    gap: 3vw;
  }

  .jxzn-video__card {
    width: 100%;
    height: auto;
    max-width: none;
    max-height: none;
  }
}

@media (max-width: 760px) {
  .jxzn-screen--video .jxzn-video__title {
    top: 8vh;
    width: 88vw;
    white-space: normal;
  }

  .jxzn-video__layout {
    top: 20vh;
    left: 6vw;
    width: 88vw;
    grid-template-columns: 1fr;
    gap: 4vh;
  }

  .jxzn-video__stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px 14px;
  }

  .jxzn-video__stat {
    grid-template-columns: 54px 1fr;
    gap: 12px;
  }

  .jxzn-video__stat-icon {
    width: 54px;
    height: 54px;
  }

  .jxzn-video__stat-copy {
    white-space: normal;
  }
}

/* ============================================================
 * Screen 03：物理AI 具身操作
 * Figma node 81:1816
 * ============================================================ */
.jxzn-screen--op {
  background: #0e1a2a;
  color: #fff;
}
.jxzn-op__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;                /* 降到最底层，给上面的遮罩腾 z-index */
  pointer-events: none;
}
/* ⚠ 原 .jxzn-op__bg::after 是死规则：<video> 是替换元素，伪元素不渲染。
   改到 section 上加真正生效的遮罩层。
   作用：
   1. 整体压暗背景视频（screen3-bg.mp4 16:9，在非 16:9 屏上 cover 裁切后，
      视频里烤的那个亮蓝环会漂移、跟上层 CSS 核心错位）；压暗后视频退为
      氛围背景，CSS 核心（文字+虚线环+webp 发光环）成为唯一焦点
   2. 顶部 + 底部渐黑，保证标题/底部能力条清晰
   z-index 1：在视频(0)之上、内容(.jxzn-field__content z-index:2)之下 */
.jxzn-screen--field-brain::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(ellipse 60% 55% at 50% 48%, rgba(0,0,0,0.62) 0%, rgba(0,0,0,0.32) 55%, rgba(0,0,0,0.12) 100%),
    linear-gradient(180deg, rgba(0,0,0,0.55) 0%, transparent 22%, transparent 72%, rgba(0,0,0,0.5) 100%);
}

/* 标题：和 screen 2 同款字体规格，top 81 横向居中 */
.jxzn-op__title {
  position: absolute;
  top: 7.5vh;                  /* 81/1080 */
  left: 50%;
  transform: translateX(-50%);
  margin: 0;
  font-family: "Source Han Sans SC", var(--jxzn-font);
  font-size: clamp(28px, 2.7083vw, 104px); /* 52/1920，4K ceiling 2× */
  font-weight: 100;
  line-height: 1.9038;          /* 99/52 */
  letter-spacing: 0;
  color: #FFFFFF;
  white-space: nowrap;
  z-index: 5;
}
.jxzn-op__title strong {
  font-weight: 700;             /* Bold「物理AI」 */
}

/* 3D 旋转图标：相对屏幕，右上角 距右 470 / 距上 336 / 50×38.88 */
.jxzn-op__rotate-icon {
  position: absolute;
  right: 24.4792vw;             /* 470/1920 */
  top: 31.1111vh;               /* 336/1080 */
  width: 2.6042vw;              /* 50/1920 */
  height: 3.6vh;                /* 38.88/1080 */
  z-index: 6;
  pointer-events: none;
  user-select: none;
}

/* === 中央展示区 1052×430 居中 === */
.jxzn-op__showcase {
  position: absolute;
  top: 30.0926vh;               /* (1080-430)/2 = 325 → 325/1080 */
  left: 50%;
  transform: translateX(-50%);
  width: 54.7917vw;             /* 1052/1920 */
  height: 39.8148vh;            /* 430/1080 */
  z-index: 4;
}

/* 左块 231×409：垂直居中（top = (430-409)/2 = 10.5px → 0.972vh） */
.jxzn-op__hw {
  position: absolute;
  left: 0;
  top: 0.9722vh;                /* 10.5/1080 */
  width: 14.5833vw;             /* 280/1920，扩宽容纳更大的域控图 */
  height: 37.8704vh;            /* 409/1080 */
}
/* 上图 280×138：跟新版域控硬件实物照片（1500×740，2.03:1）比例匹配
 * 之前 230×78（2.95:1）跟 2.03:1 图错配，object-fit:contain 把图
 * 实际渲染成 158×78，左右各 36px 空白 → 看着模糊。 */
.jxzn-op__hw-top {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  top: 0.7981vh;                /* 8.62/1080 */
  width: 14.5833vw;             /* 280/1920 */
  height: 12.7778vh;            /* 138/1080 */
  object-fit: contain;
}
/* 下图 251×138：跟扩大后的上图错开（上图 top 8.62+138=146.62，加 text 22+gap）*/
.jxzn-op__hw-bot {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  top: 20.2426vh;               /* 218.62/1080，原 199.93 下移以避开扩大后的上图+text1 */
  width: 13.0729vw;             /* 251/1920 */
  height: 12.7778vh;            /* 138/1080 */
  object-fit: contain;
}

/* 文字标签：Source Han Sans SC / 22 / Regular / 字距 0
   text1「域控硬件示意图」在上图下方 25px → top 111.93
   text2「大脑硬件示意图」在下图上方（上下两 text 间距 66） → top 199 */
.jxzn-op__hw-text {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  margin: 0;
  font-family: "Source Han Sans SC", var(--jxzn-font);
  font-size: clamp(14px, 1.1458vw, 22px);
  font-weight: 400;
  line-height: 1;
  letter-spacing: 0;
  color: #FFFFFF;
  white-space: nowrap;
}
.jxzn-op__hw-text--1 { top: 15.8907vh; }    /* 171.62/1080，跟上图扩大同步下移（原 111.93）*/
.jxzn-op__hw-text--2 { top: 35.3361vh; }    /* 381.62/1080，跟下图下移同步（原 361.93）*/

/* 中线：垂直 240.5×2px #929292，左 231+109=340，垂直居中 */
.jxzn-op__divider {
  position: absolute;
  left: 17.7083vw;              /* 340/1920 */
  top: 50%;
  transform: translateY(-50%);
  width: 2px;
  height: 22.2685vh;             /* 240.5/1080 */
  background: #929292;
  border: 0;
}

/* 右块 642×430：左 340+2+117=459，机械狗居中（上下 padding 40，左右 58） */
.jxzn-op__robot {
  position: absolute;
  left: 23.9063vw;              /* 459/1920 */
  top: 0;
  width: 33.4375vw;             /* 642/1920 */
  height: 39.8148vh;            /* 430/1080 */
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3.7037vh 3.0208vw;   /* 上下 40/1080, 左右 58/1920 */
  box-sizing: border-box;
}
.jxzn-op__robot img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: opacity 0.4s, transform 0.5s ease;
}

/* === 底部 Tabs：showcase 底 +103px === */
/* showcase 底 y = 325 + 430 = 755；tabs top = 755 + 103 = 858 → 79.4444vh */
.jxzn-op__tabs {
  position: absolute;
  top: 79.4444vh;               /* 858/1080 */
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 26px;
  z-index: 5;
  white-space: nowrap;
}
.jxzn-op__tab {
  height: 4.8vh;
  min-height: 44px;
  max-height: 60px;
  padding: 0 clamp(20px, 2vw, 40px);
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: clamp(14px, 1.1vw, 20px);
  font-family: inherit;
  cursor: pointer;
  transition: all 0.3s ease;
  white-space: nowrap;
  background: rgba(58, 58, 58, 0.85);
  color: rgba(255,255,255,0.6);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}
.jxzn-op__tab:hover {
  color: rgba(255,255,255,0.9);
  background: rgba(80, 80, 80, 0.85);
}
.jxzn-op__tab.is-active {
  background: #fff;
  color: #000;
  font-weight: 700;
  border-color: #fff;
}

/* ============================================================
 * Screen 04：驱动变革的 物理AI核心引擎
 * Figma node 8:979
 * 屏幕 1920×1080
 * ============================================================ */
.jxzn-screen--engine {
  background: #000;
  color: #fff;
}
.jxzn-engine__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
  user-select: none;
  pointer-events: none;
}

/* 主标题：top 81 / 横向居中 / 52px / Thin / 「物理AI核心引擎」加粗 */
.jxzn-engine__title {
  position: absolute;
  top: 7.5vh;                   /* 81/1080 */
  left: 50%;
  transform: translateX(-50%);
  margin: 0;
  font-family: "Source Han Sans SC", var(--jxzn-font);
  font-size: clamp(28px, 2.7083vw, 104px); /* 52/1920，4K ceiling 2× */
  font-weight: 100;
  line-height: 1.9038;          /* 99/52 */
  letter-spacing: 0;
  color: #FFFFFF;
  white-space: nowrap;
  z-index: 5;
}
.jxzn-engine__title strong {
  font-weight: 700;             /* 「物理AI核心引擎」加粗 */
}

/* 副标题：30px / 主标题视觉底 + 30px 间距
   主标题字体 52 行高 99，半行距 (99-52)/2=23.5
   主标题视觉底 = 81 + 23.5 + 52 = 156.5
   副标题 top = 156.5 + 30 = 186.5 */
.jxzn-engine__subtitle {
  position: absolute;
  top: 17.2685vh;               /* 186.5/1080 */
  left: 50%;
  transform: translateX(-50%);
  margin: 0;
  font-family: "Source Han Sans SC", var(--jxzn-font);
  font-size: clamp(16px, 1.5625vw, 30px);  /* 30/1920 */
  font-weight: 100;
  line-height: 1;
  letter-spacing: 0;
  color: #FFFFFF;
  white-space: nowrap;
  z-index: 5;
}

/* 主视觉 917×611：left 513（right 490），top 上移到 280 让构图不下沉 */
.jxzn-engine__main {
  position: absolute;
  top: 25.9259vh;               /* 280/1080（原 333，上移 53px）*/
  left: 26.7188vw;              /* 513/1920 */
  width: 47.7604vw;             /* 917/1920 */
  height: 56.5741vh;            /* 611/1080 */
  object-fit: contain;
  z-index: 4;
  mix-blend-mode: screen;       /* 三层结构图黑底融合：黑色变透明，保留亮色 */
  user-select: none;
  pointer-events: none;
}

/* 左侧列表：x 371 / y 388 / 137.5×244 / 4 项 / 间距 36 / 整体居中 */
.jxzn-engine__list {
  position: absolute;
  left: 19.3229vw;              /* 371/1920 */
  top: 35.9259vh;               /* 388/1080 */
  width: 7.1615vw;              /* 137.5/1920 */
  height: 22.5926vh;            /* 244/1080 */
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  justify-content: space-between;  /* 4 项均匀分布占满 244 */
  align-items: center;             /* 整体居中 */
  z-index: 5;
}
.jxzn-engine__list li {
  display: flex;
  align-items: center;
  gap: 2px;                        /* icon 距文字 2px */
  font-family: "Source Han Sans SC", var(--jxzn-font);
  font-size: clamp(14px, 1.25vw, 24px);   /* 24/1920 */
  font-weight: 400;
  line-height: 1;
  color: #FFFFFF;
  white-space: nowrap;
}
.jxzn-engine__list img {
  width: 0.7813vw;                 /* 15/1920 */
  height: 1.2963vh;                /* 14/1080 */
  max-width: 15px;
  max-height: 14px;
  object-fit: contain;
  flex-shrink: 0;
}

/* ============================================================
 * Header — 全站顶部导航（位置：覆盖在 hero 上，半透明）
 * ============================================================ */

/* ============================================================
 * Screen 05: 投资机构
 * ============================================================ */
.jxzn-screen--investors {
  background: #020813;
  color: #fff;
}

.jxzn-investors__bg {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  user-select: none;
  pointer-events: none;
}

.jxzn-screen--investors::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  background:
    radial-gradient(circle at 50% 46%, rgba(40, 152, 255, 0.22), transparent 34%),
    linear-gradient(180deg, rgba(0, 0, 0, 0.64) 0%, rgba(0, 0, 0, 0.28) 44%, rgba(0, 0, 0, 0.72) 100%);
  pointer-events: none;
}

.jxzn-investors__content {
  position: relative;
  z-index: 3;
  width: 65.625vw;                    /* 1260/1920，4K → 2520 */
  max-width: 100vw;
  min-height: 100%;
  margin: 0 auto;
  /* 下 padding 252px @ 1080p（按视口高度自适应：252/1080 = 23.33vh）
     1920 vh→448、1440 vh→336、1080 vh→252、720 vh→168 */
  padding: 7.5vh 0 23.33vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.jxzn-investors__title {
  max-width: calc(100vw - 40px);
  margin: 0 auto 3.4896vw;            /* 67/1920 */
  font-family: "Source Han Sans SC", var(--jxzn-font);
  font-size: clamp(20px, 2.3958vw, 92px);  /* 设计 46 / 下限 20 / 4K 92 */
  font-weight: 700;
  line-height: 2.1522;                /* 99/46 unitless */
  letter-spacing: 0;
  color: #fff;
  text-align: center;
  white-space: normal;
  overflow-wrap: anywhere;
  word-break: normal;
}

.jxzn-investors__grid {
  width: auto;
  margin-top: 0;
  display: grid;
  grid-template-columns: repeat(4, 12.6042vw);  /* 242/1920 */
  gap: clamp(12px, 1.0417vw, 40px);             /* 20→40 */
  justify-content: center;
}

.jxzn-investors__item {
  position: relative;                 /* 给 hover 时 z-index 一个锚 */
  z-index: 1;
  width: 12.6042vw;                   /* 242/1920，4K → 484 */
  height: 7.9167vw;                   /* 152/1920，4K → 304 */
  min-height: 96px;                   /* 1280 下也至少 96px */
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.625vw 1.0417vw;          /* 12 / 20 / 1920，给 logo 周围留白 */
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 1.0417vw;            /* 20/1920 */
  background: #fff;                   /* 纯白底（之前 rgba 0.92 让深蓝透出，显灰）*/
  box-shadow: 0 1.25vw 3.6458vw rgba(0, 20, 70, 0.24);  /* 0 24px 70px */
  overflow: hidden;
  transition: transform .35s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: transform;
}

.jxzn-investors__item img {
  width: 100%;                        /* 占满整个卡片 */
  height: 100%;
  object-fit: contain;                /* logo 比例不变，居中 fit */
}

.jxzn-investors__item--transparent {
  padding: 0;
  border-color: transparent;
  background: transparent;
  box-shadow: none;
  overflow: visible;
}

.jxzn-investors__item--transparent img {
  object-fit: contain;
  transform: scale(1.25);
  transform-origin: center;
}

.jxzn-investors__item:hover {
  /* !important 是为了盖过 animations.js GSAP 入场动画后留在 inline style
   * 上的 transform: translate3d(0,0,0)。inline 比外部 stylesheet 优先级高，
   * 不加 !important 就会出现 hover 没效果的诡异现象。 */
  transform: scale(1.08) !important;
  transform-origin: center;
  z-index: 4;                         /* hover 时浮到同 row 其它卡片之上 */
}

.jxzn-investors__item--more {
  font-size: clamp(14px, 1.3542vw, 52px);  /* 设计 26 / 4K 52 */
  font-weight: 400;
  line-height: normal;
  background: transparent;
  color: rgba(255, 255, 255, 0.9);
}

.jxzn-investors__item--more img {
  position: absolute;
  inset: 0;
}

.jxzn-investors__desc {
  margin: 5vh 0 0;
  max-width: 39.5833vw;               /* 760/1920 */
  padding: 0 1.25vw;                  /* 24/1920 */
  font-family: "Source Han Sans SC", var(--jxzn-font);
  font-size: clamp(14px, 1.5625vw, 60px);  /* 设计 30 / 下限 14 / 4K 60 */
  font-weight: 100;
  line-height: 1.65;
  letter-spacing: 0;
  color: rgba(255, 255, 255, 0.84);
  text-align: center;
}

.jxzn-investors__item--more .jxzn-investors__desc {
  position: relative;
  z-index: 1;
  margin: 0;
  max-width: none;
  padding: 0;
  font: inherit;
  color: inherit;
  white-space: nowrap;
}

@media (max-width: 1100px) {
  .jxzn-investors__content {
    width: min(86vw, 900px);
    padding-top: 9vh;
  }

  .jxzn-investors__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    width: 100%;
    margin-top: 4vh;
  }

  .jxzn-investors__item {
    width: 100%;
    height: 118px;
  }
}

@media (max-width: 700px) {
  .jxzn-screen--investors {
    height: auto;
    min-height: 100vh;
    overflow: visible;
  }

  .jxzn-investors__content {
    width: calc(100% - 40px);
    min-height: 100vh;
    padding: 86px 0 56px;
  }

  .jxzn-investors__title {
    white-space: normal;
    line-height: 1.25;
  }

  .jxzn-investors__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    margin-top: 32px;
  }

  .jxzn-investors__item {
    width: 100%;
    height: 72px;
  }

  .jxzn-investors__desc {
    margin-top: 34px;
    padding: 0;
  }
}

/* ============================================================
 * Screen 06: 荣誉认证
 * ============================================================ */
.jxzn-screen--honors {
  position: relative;
  background: #000;
  color: #fff;
  overflow: hidden;
}

.jxzn-honors__bg {
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: 1;
  width: 100%;
  height: 100%;
  min-width: 1920px;
  min-height: 1080px;
  transform: translate(-50%, -50%);
  object-fit: cover;
  pointer-events: none;
  user-select: none;
}

.jxzn-screen--honors .jxzn-screen__inner {
  position: relative;
  z-index: 2;
  width: 100%;
  height: 100%;
}

.jxzn-honors__content {
  position: relative;
  width: 100vw;                        /* 去掉 1920 cap */
  height: 100vh;                       /* % 定位以此为基准 */
  min-height: 720px;
  margin: 0 auto;
}

.jxzn-honors__title {
  position: absolute;
  left: 50%;
  top: 10.2778%;
  width: max-content;
  max-width: calc(100vw - 40px);
  margin: 0 auto;
  transform: translateX(-50%);
  font-family: "Source Han Sans SC", var(--jxzn-font);
  font-size: clamp(20px, 2.3958vw, 92px);  /* 设计 46 / 4K 92 */
  font-weight: 700;
  line-height: 2.1522;                /* 99/46 unitless */
  text-align: center;
  color: #fff;
  white-space: normal;
  overflow-wrap: anywhere;
  word-break: normal;
}

.jxzn-honors__subtitle {
  position: absolute;
  left: 50%;
  top: 21.1111%;
  width: 54.7396vw;                   /* 1051/1920 */
  max-width: calc(100vw - 40px);
  margin: 0 auto;
  transform: translateX(-50%);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1.4583vw;                      /* 28/1920 */
  font-family: "Source Han Sans SC", var(--jxzn-font);
  font-size: var(--jxzn-fs-subtitle);  /* 统一副标题（原 clamp 22，值不变）*/
  line-height: 1.4545;                /* 32/22 */
  color: #fff;
  text-align: center;
  white-space: normal;
  overflow-wrap: anywhere;
  word-break: normal;
}

.jxzn-honors__subtitle strong {
  font-weight: 700;
}

.jxzn-honors__subtitle span {
  font-family: var(--jxzn-font);
  font-size: var(--jxzn-fs-body);
  font-weight: 300;
  line-height: 1.625;
}

.jxzn-honors__pill {
  position: absolute;
  left: 50%;
  width: 10.9375vw;                   /* 210/1920 */
  height: 2.0458vw;                   /* 39.28/1920 */
  min-width: 140px;
  min-height: 28px;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  border-radius: 999px;               /* 完全胶囊，随高度变化 */
  background: #fff;
  color: #000;
  font-family: "Source Han Sans SC", var(--jxzn-font);
  font-size: clamp(14px, 1.4583vw, 56px);  /* 设计 28 / 4K 56 */
  font-weight: 700;
  line-height: 0.8571;                /* 24/28 */
  text-align: center;
  white-space: nowrap;
  box-sizing: border-box;
}

.jxzn-honors__pill--cert {
  top: 30.8333%;
}

.jxzn-honors__pill--rank {
  top: 70.0926%;
}

.jxzn-honors__certs {
  position: absolute;
  left: 50%;
  top: 39.2593%;
  width: 62.5vw;                      /* 1200/1920 */
  height: 12.3958vw;                  /* 238/1920 */
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.1458vw;                      /* 22/1920 */
}

.jxzn-honors__laurel {
  width: 7.0833vw;                    /* 136/1920 */
  height: 11.3542vw;                  /* 218/1920 */
  flex: 0 0 7.0833vw;
  position: relative;
}

.jxzn-honors__laurel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 7.0833vw;
  height: 11.3021vw;                  /* 217/1920 */
  background: url(../img/honors-laurel.webp) no-repeat center/contain;
  transform: translateY(-50%);
}

.jxzn-honors__laurel--right::before {
  left: 0;
  transform: translateY(-50%) scaleX(-1);
}

.jxzn-honors__cert {
  width: 14.5833vw;                   /* 280/1920 */
  height: 12.3958vw;                  /* 238/1920 */
  margin: 0;
  flex: 0 0 14.5833vw;
  text-align: center;
}

.jxzn-honors__cert img {
  display: block;
  width: 14.5833vw;                   /* 280/1920 */
  height: 10.3125vw;                  /* 198/1920 */
  border-radius: 0.2604vw;            /* 5/1920 */
  object-fit: cover;
}

.jxzn-honors__cert h3 {
  width: 100%;
  height: auto;
  margin: 1.225vw 0 0;                /* 23.52/1920 */
  font-family: "Source Han Sans SC", var(--jxzn-font);
  font-size: clamp(12px, 0.9375vw, 36px);  /* 设计 18 / 4K 36 */
  font-weight: 700;
  line-height: 1.2222;                /* 22/18 */
  color: #fff;
  text-align: center;
  white-space: nowrap;
}

.jxzn-honors__rankings {
  position: absolute;
  left: 50%;
  top: 78.7963%;
  width: 62.5vw;                      /* 1200/1920 */
  height: auto;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5vw;                         /* 28.8/1920 */
}

.jxzn-honors__rankings p {
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.0417vw;                      /* 20/1920 */
  font-family: "Source Han Sans SC", var(--jxzn-font);
  font-size: clamp(12px, 1.0417vw, 40px);  /* 设计 20 / 4K 40 */
  font-weight: 400;
  line-height: 1.16;                  /* 23.2/20 */
  color: #fff;
  white-space: nowrap;
}

.jxzn-honors__rankings span {
  display: inline-flex;
  align-items: center;
  gap: 0.5177vw;                      /* 9.94/1920 */
}

.jxzn-honors__rankings span::before,
.jxzn-honors__rankings span::after {
  content: "";
  width: 0.5229vw;                    /* 10.04/1920 */
  height: 1.2083vw;                   /* 23.2/1920 */
  background: url(../img/honors-laurel-small.webp) no-repeat center/contain;
}

.jxzn-honors__rankings span::after {
  transform: scaleX(-1);
}

/* 已改为 fluid vw 缩放，不再需要 transform: scale 兜底 */

@media (max-width: 900px) {
  .jxzn-screen--honors {
    height: auto;
    min-height: 100vh;
  }

  .jxzn-honors__bg {
    min-width: 100%;
  }

  .jxzn-honors__content {
    width: 100%;
    height: auto;
    min-height: 100vh;
    padding: 86px 20px 64px;
    transform: none;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .jxzn-honors__title,
  .jxzn-honors__subtitle,
  .jxzn-honors__pill,
  .jxzn-honors__certs,
  .jxzn-honors__rankings {
    position: static;
    transform: none;
  }

  .jxzn-honors__title {
    width: auto;
    height: auto;
    line-height: 1.25;
  }

  .jxzn-honors__subtitle {
    width: 100%;
    height: auto;
    margin: 28px 0 48px;
    flex-direction: column;
    gap: 8px;
    white-space: normal;
  }

  .jxzn-honors__pill {
    margin-bottom: 28px;
  }

  .jxzn-honors__certs {
    width: 100%;
    height: auto;
    flex-direction: column;
  }

  .jxzn-honors__laurel {
    display: none;
  }

  .jxzn-honors__pill--rank {
    margin-top: 56px;
  }

  .jxzn-honors__rankings {
    width: 100%;
    height: auto;
    gap: 16px;
  }

  .jxzn-honors__rankings p {
    flex-direction: column;
    white-space: normal;
    text-align: center;
  }
}

/* ============================================================
 * Screen 07: 联系转化
 * ============================================================ */
.jxzn-screen--cta {
  position: relative;
  background: #000;
  color: #fff;
  overflow: hidden;
}

.jxzn-cta__bg {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  min-width: 1920px;
  min-height: 1080px;
  object-fit: cover;
  object-position: center;
  pointer-events: none;
  user-select: none;
}

.jxzn-screen--cta .jxzn-screen__inner {
  position: relative;
  z-index: 2;
  width: 100%;
  height: 100%;
}

/* CTA 内容区：改成 flexbox 流式垂直居中，确保各分辨率/视口高度下
 * title / cards / note 都能正确居中显示，note 不被裁切 */
.jxzn-cta__content {
  position: relative;
  width: 100vw;
  min-height: 100vh;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: clamp(28px, 3.5vw, 80px);
  padding: clamp(60px, 8vh, 120px) 20px;
  box-sizing: border-box;
}

.jxzn-cta__title {
  position: static;
  transform: none;
  margin: 0 auto;
  font-family: "Source Han Sans SC", var(--jxzn-font);
  font-size: clamp(20px, min(2.3958vw, 4.2593vh), 92px);
  font-weight: 300;
  line-height: 1.25;
  letter-spacing: 0;
  color: #fff;
  text-align: center;
  white-space: normal;
  overflow-wrap: anywhere;
  word-break: normal;
}

.jxzn-cta__title strong {
  font-weight: 700;
}

/* cards 已改为 flex 流式定位 */
.jxzn-cta__cards {
  position: static;
  transform: none;
  display: flex;
  align-items: flex-start;
  justify-content: center;
}

.jxzn-cta__card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4.8958vw;                      /* 94/1920 */
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 0.4167vw;            /* 8/1920 */
  background: linear-gradient(180deg, rgba(70,70,70,0.84) 0%, rgba(0,0,0,0.92) 100%);
  color: #fff;
  text-decoration: none;
  box-shadow: 0 1.25vw 3.6458vw rgba(0, 0, 0, 0.34);
}

.jxzn-cta__card--active {
  border-color: rgba(0, 91, 255, 0.88);
}

.jxzn-cta__card strong {
  font-family: "Source Han Sans SC", var(--jxzn-font);
  font-size: clamp(14px, 1.5625vw, 60px);  /* 设计 30 / 4K 60 */
  font-weight: 700;
  line-height: 1;
  color: #fff;
  white-space: nowrap;
  text-align: center;
  padding: 0 0.6em;
}

/* 英文比中文长（"Contact an Expert" vs "联系技术专家"），允许换行 + 略小字号 */
html[lang="en"] .jxzn-cta__card strong {
  white-space: normal;
  font-size: clamp(13px, 1.3vw, 48px);
  line-height: 1.2;
}

.jxzn-cta__icon {
  display: block;
  width: 8.3333vw;                    /* 160/1920 */
  height: 8.3333vw;
  color: #fff;
}

.jxzn-cta__icon--stack {
  position: relative;
}

.jxzn-cta__icon--stack::before,
.jxzn-cta__icon--stack::after {
  content: "";
  position: absolute;
  left: 1.1458vw;                     /* 22/1920 */
  width: 6.0417vw;                    /* 116/1920 */
  height: 3.4375vw;                   /* 66/1920 */
  border: 0.4688vw solid #fff;        /* 9/1920 */
  border-top: 0;
  transform: skewY(-28deg) rotate(30deg);
}

.jxzn-cta__icon--stack::before {
  top: 1.4583vw;                      /* 28/1920 */
}

.jxzn-cta__icon--stack::after {
  top: 3.0208vw;                      /* 58/1920 */
  box-shadow: 0 1.5625vw 0 -0.4688vw #fff;  /* 0 30px 0 -9px */
}

.jxzn-cta__icon--ai {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: Arial, sans-serif;
  font-size: clamp(40px, 5vw, 192px);  /* 设计 96 / 4K 192 */
  font-weight: 400;
  line-height: 1;
}

.jxzn-cta__icon--ai::before,
.jxzn-cta__icon--ai::after {
  content: "✦";
  position: absolute;
  font-size: clamp(14px, 1.4583vw, 56px);  /* 设计 28 / 4K 56 */
  color: #fff;
}

.jxzn-cta__icon--ai::before {
  transform: translate(2.7083vw, -3.3333vw);  /* 52/1920, -64/1920 */
}

.jxzn-cta__icon--ai::after {
  transform: translate(4.5833vw, -1.3542vw);  /* 88/1920, -26/1920 */
}

.jxzn-cta__demo {
  position: relative;
  width: 18.75vw;                     /* 360/1920 */
  height: 25vw;                       /* 480/1920 */
  display: block;
  overflow: hidden;
  text-decoration: none;
}

.jxzn-cta__demo-panel {
  position: absolute;
  left: 2.0833vw;                     /* 40/1920 */
  bottom: 0.8333vw;                   /* 16/1920 */
  width: 15.7292vw;                   /* 302/1920 */
  height: 6.1458vw;                   /* 118/1920 */
  padding: 0.9375vw 1.1458vw;         /* 18/22 */
  border-radius: 0.8333vw;            /* 16/1920 */
  background: rgba(0, 0, 0, 0.52);
  color: #fff;
  box-sizing: border-box;
}

.jxzn-cta__demo-panel strong {
  display: block;
  font-family: "Source Han Sans SC", var(--jxzn-font);
  font-size: clamp(14px, 1.1458vw, 44px);  /* 设计 22 / 4K 44 */
  font-weight: 700;
  line-height: 1.45;
  color: #fff;
}

.jxzn-cta__demo-panel em {
  display: block;
  margin-top: 0.5208vw;               /* 10/1920 */
  font-style: normal;
  font-size: clamp(11px, 0.7292vw, 28px);  /* 设计 14 / 4K 28 */
  color: rgba(255,255,255,0.62);
}

.jxzn-cta__demo-panel span {
  position: absolute;
  right: 1.1979vw;                    /* 23/1920 */
  bottom: 1.4583vw;                   /* 28/1920 */
  font-family: Arial, sans-serif;
  font-size: clamp(18px, 2.1875vw, 84px);  /* 设计 42 / 4K 84 */
  font-weight: 400;
  line-height: 1;
  color: #fff;
}

/* CTA 三卡：
 *   - 设计基线 328x438 (1920 宽)
 *   - vw 缩放 + max 封顶（2K/2560 上不再膨胀到 480x643）
 *   - 用 aspect-ratio 锁住 328:438 高瘦比，避免 vh 在矮屏挤压成扁卡 */
.jxzn-cta__cards {
  width: auto;                        /* 让 flex 子项决定，避免封顶后挤压 */
  max-width: min(55vw, 1120px);
  height: auto;                       /* 跟着卡的 aspect-ratio 自动 */
  gap: clamp(16px, 1.875vw, 40px);
}

.jxzn-cta__card {
  position: relative;
  --cta-glow-main: 0, 91, 255;
  --cta-glow-hot: 80, 180, 255;
  flex: 0 0 min(17.0833vw, 328px);    /* 设计 328 */
  width: min(17.0833vw, 328px);
  height: auto;
  aspect-ratio: 328 / 438;
  display: block;
  overflow: visible;
  border: 0;
  border-radius: clamp(6px, 0.4167vw, 12px);
  background: transparent;
  box-shadow: none;
  perspective: 72.9167vw;             /* 1400/1920 */
  transform-style: preserve-3d;
  -webkit-transform-style: preserve-3d;
}

.jxzn-cta__face {
  position: absolute;
  inset: 0;
  display: block;
  overflow: hidden;
  border-radius: 0.4167vw;            /* 8/1920 */
  /*background-color: #000; */            /* PNG 移到 ::after，这里只做底层兜底 */
  transform-origin: center;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  transform-style: preserve-3d;
  -webkit-transform-style: preserve-3d;
  transition: opacity 300ms ease, transform 300ms ease;
}

/* 旋转光环：一条横向蓝色渐变带绕卡片中心匀速旋转
   ::before 大于卡片，溢出被 overflow: hidden 切，::after 内层挡住中央
   只在卡片边缘留 2px 的环让光带扫过 → 形成"边线流光"效果 */
.jxzn-cta__face::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 200%;
  height: 220%;
  transform: translate(-50%, -50%);
  background: linear-gradient(
    90deg,
    transparent 30%,
    rgba(0, 91, 255, 0.85) 47%,         /* #005BFF 主色 */
    #50B4FF 50%,                         /* 中心高亮 */
    rgba(0, 91, 255, 0.85) 53%,
    transparent 70%
  );
  animation: jxzn-cta-glow 4s linear infinite;
  z-index: 0;
  pointer-events: none;
}

.jxzn-cta__card .jxzn-cta__face::before {
  background: linear-gradient(
    90deg,
    transparent 30%,
    rgba(var(--cta-glow-main), 0.85) 47%,
    rgb(var(--cta-glow-hot)) 50%,
    rgba(var(--cta-glow-main), 0.85) 53%,
    transparent 70%
  );
}

/* 内层面板：装 PNG 雪碧图，inset 2px 留出光环边 */
.jxzn-cta__face::after {
  content: "";
  position: absolute;
  inset: 2px;
  background-color: #000;
  background-image: var(--face-bg);
  background-repeat: no-repeat;
  background-size: 60vw min(25.1042vw, 44.6296vh);   /* sprite 高跟卡片走 */
  background-position: var(--card-position) 0;
  border-radius: calc(0.4167vw - 2px);
  z-index: 1;
}

.jxzn-cta__face--front {
  z-index: 2;
  transform: rotateY(0deg);
  -webkit-transform: rotateY(0deg);
  opacity: 1;
}

.jxzn-cta__face--back {
  z-index: 1;
  transform: rotateY(180deg);
  -webkit-transform: rotateY(180deg);
  opacity: 0;
  box-shadow:
    0 0 1.0417vw rgba(var(--cta-glow-hot), 0.42),
    0 0.4167vw 1.5625vw rgba(0, 0, 0, 0.42);
}

/* 背面专属背景图（每张卡独立设计图）*/
.jxzn-cta__card--solution { --back-bg: url("../img/cta-card1-back-bg.webp"); }
.jxzn-cta__card--demo     { --back-bg: url("../img/cta-card2-back-bg.webp"); }
.jxzn-cta__card--expert   { --back-bg: url("../img/cta-card3-back-bg.webp"); }

/* 背面 ::after：cover 铺满背景图（覆盖父级的 var(--face-bg)）*/
.jxzn-cta__face--back::after {
  background-image: var(--back-bg);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  box-shadow:
    inset 0 0 0 1px rgba(var(--cta-glow-hot), 0.42),
    inset 0 0 1.25vw rgba(0, 0, 0, 0.38);
}

@keyframes jxzn-cta-glow {
  from { transform: translate(-50%, -50%) rotate(0deg); }
  to   { transform: translate(-50%, -50%) rotate(360deg); }
}

.jxzn-cta__card:hover .jxzn-cta__face--front {
  transform: rotateY(-180deg);
  -webkit-transform: rotateY(-180deg);
  opacity: 0;
}

.jxzn-cta__card:hover .jxzn-cta__face--back {
  z-index: 3;
  transform: rotateY(0deg);
  -webkit-transform: rotateY(0deg);
  opacity: 1;
}

.jxzn-cta__card--solution {
  --card-position: 0;
}

.jxzn-cta__card--demo {
  --card-position: -20.625vw;         /* -396/1920 */
}

.jxzn-cta__card--expert {
  --card-position: -41.25vw;          /* -792/1920 */
}

/* ===========================================================
 * 3 张卡片正面统一设计（不走雪碧图）
 *   - 纯 CSS 渐变背景 (#353535 → #000)
 *   - 居中 SVG icon（每张卡不同图标）
 *   - 底部居中标题文字
 * =========================================================== */

/* 替换正面雪碧图为纯渐变 */
.jxzn-cta__card .jxzn-cta__face--front::after {
  background-image: none;
  background: linear-gradient(180deg, #353535 0%, #000 100%);
}
.jxzn-cta__card--solution .jxzn-cta__face--front::after {
  background: url("../img/cta-card2-bg.webp") center/cover no-repeat;
}
.jxzn-cta__card--demo .jxzn-cta__face--front::after {
  background: url("../img/cta-card2-bg.webp") center/cover no-repeat;
}
.jxzn-cta__card--expert .jxzn-cta__face--front::after {
  background: url("../img/cta-card2-bg.webp") center/cover no-repeat;
}
/* SVG icon：卡片中上部居中 */
.jxzn-cta__face-icon {
  position: absolute;
  left: 50%;
  top: 36.6%;
  z-index: 3;
  width: 41.4%;                       /* 157/380 */
  height: auto;
  transform: translate(-50%, -50%);
  pointer-events: none;
  user-select: none;
}

/* 标题：显示在卡片下部居中。strong 在 face--front 内部，跟随翻转 */
.jxzn-cta__face--front > strong {
  position: absolute;
  left: 50%;
  top: 79.1%;
  transform: translate(-50%, -50%);
  z-index: 3;
  margin: 0;
  font-family: "Source Han Sans SC", var(--jxzn-font);
  font-size: clamp(16px, 1.5625vw, 60px);  /* 设计 30 / 4K 60 */
  font-weight: 700;
  color: #fff;
  white-space: nowrap;
  text-align: center;
  pointer-events: none;
}

/* ===========================================================
 * 3 张卡片背面统一面板设计
 *   - 背景：每卡独立全屏图（--back-bg）
 *   - 底部居中浮动信息面板（毛玻璃 + 阴影）
 *     - 左：2 行标题文字
 *     - 右：图标（复用正面的 SVG）
 *     - 下：CTA 提示文字
 * =========================================================== */

/* 底部信息面板 */
.jxzn-cta__back-panel {
  position: absolute;
  left: 5.26%;                        /* 18.95/360 */
  right: 5.26%;
  bottom: 4.15%;                      /* 20/482 */
  z-index: 3;
  display: flex;
  flex-direction: column;
  gap: 0.625vw;                       /* 12/1920 */
  padding: 0.888vw 1.0417vw;          /* 17/20 in design */
  background: rgba(0, 0, 0, 0.6);
  -webkit-backdrop-filter: blur(5px);
  backdrop-filter: blur(5px);
  border-radius: 0.4938vw;            /* 9.47/1920 */
  box-shadow: 0 0 0.987vw 0.4938vw rgba(0, 0, 0, 0.53);  /* 0 0 18.9 9.47 */
  box-sizing: border-box;
}

/* 标题行：左 2 行文字 + 右 icon */
.jxzn-cta__back-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5vw;
}

/* 标题文字（2 行）*/
.jxzn-cta__back-title-text {
  display: flex;
  flex-direction: column;
  gap: 0.156vw;                       /* 3/1920 */
  font-family: "Source Han Sans SC", var(--jxzn-font);
  font-size: clamp(12px, 1.04vw, 40px);  /* 缩小防溢出（原 1.184vw）*/
  font-weight: 700;
  line-height: 1.2;
  color: #fff;
}
.jxzn-cta__back-title-text > span {
  display: block;
}

/* 右侧 icon（复用正面 SVG，尺寸小）*/
.jxzn-cta__back-icon {
  flex-shrink: 0;
  width: 2.76vw;                      /* 53/1920 */
  height: 2.76vw;
  min-width: 32px;
  min-height: 32px;
  object-fit: contain;
}

/* CTA 提示文字 */
.jxzn-cta__back-footer {
  font-family: "Source Han Sans SC", var(--jxzn-font);
  font-size: clamp(11px, 0.79vw, 30px);  /* 设计 15.2 / 4K 30 */
  font-weight: 400;
  line-height: 1.2;
  color: rgba(255, 255, 255, 0.53);
}

.jxzn-cta__face--front > strong,
.jxzn-cta__back-title,
.jxzn-cta__back-title-text,
.jxzn-cta__back-title-text > span,
.jxzn-cta__back-footer,
.jxzn-cta__note {
  white-space: nowrap;
}

/* (旧规则 .jxzn-cta__card > strong { display: none } 已删除，
   strong 现在在 .jxzn-cta__face--front 内部，跟随翻转一起隐藏) */

.jxzn-cta__note {
  position: static;
  transform: none;
  margin: 0;
  font-family: var(--jxzn-font);
  font-size: var(--jxzn-fs-body);
  font-weight: 300;
  line-height: 1.625;
  color: #fff;
  text-align: center;
  white-space: normal;                 /* 移动端允许折行 */
  max-width: 90vw;
}

/* 已改为 fluid vw 缩放，不再需要 transform: scale 兜底 */

@media (max-width: 900px) {
  .jxzn-screen--cta {
    height: auto;
    min-height: 100vh;
  }

  .jxzn-cta__bg {
    min-width: 100%;
  }

  .jxzn-cta__content {
    width: 100%;
    height: auto;
    min-height: 100vh;
    padding: 96px 20px 72px;
    transform: none;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .jxzn-cta__title,
  .jxzn-cta__cards,
  .jxzn-cta__note {
    position: static;
    transform: none;
  }

  .jxzn-cta__title {
    font-size: clamp(16px, 4.6vw, 32px);
  }

  .jxzn-cta__cards {
    width: 100%;
    height: auto;
    margin-top: 56px;
    flex-direction: column;
    align-items: center;
  }

  .jxzn-cta__card {
    flex: 0 0 auto;
    width: min(328px, 100%);
    max-width: 328px;
    height: auto;
    aspect-ratio: 328 / 438;
  }

  .jxzn-cta__note {
    margin-top: 56px;
    white-space: nowrap;
  }
}

.jxzn-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0;
  padding: 21px clamp(48px, 5vw, 128px);
  background: transparent;
  /* transform + background 一起平滑过渡 */
  transition:
    background 0.3s ease,
    -webkit-backdrop-filter 0.3s ease,
    backdrop-filter 0.3s ease,
    transform 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
  transform: translateY(0);
}

/* 滚出首屏后：实底 + 模糊 */
.jxzn-header.is-scrolled {
  background: rgba(0, 0, 0, 0.85);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

/* 非首页（tech/case/about/news）：banner 只有 ~380px 高、标题居中，
   透明 header 会盖在标题上看着像文字重复。这些页 header 默认就用深色实底，
   不走首页那套"首屏透明 / 滚动变深"的逻辑。
   首页 data-page="home" 排除在外，保持原透明→滚动变深行为 */
body:not([data-page="home"]) .jxzn-header {
  background: rgba(0, 0, 0, 0.85);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

/* 隐藏（往下滚动时）：向上滑出去 */
.jxzn-header.is-hidden {
  transform: translateY(-110%);
}

.jxzn-header__logo {
  margin-right: auto;
  flex-shrink: 0;
  width: 137px;
  height: 38px;
}
.jxzn-header__logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.jxzn-nav {
  display: flex;
  align-items: center;
  gap: clamp(32px, 3.125vw, 80px);
  flex: 0 1 auto;
  justify-content: flex-end;
  min-width: 0;
}

.jxzn-nav__item {
  font-size: var(--jxzn-fs-nav);
  line-height: 32px;
  color: var(--jxzn-text-dim);
  font-weight: 400;
  white-space: nowrap;
  cursor: pointer;
}

.jxzn-nav__item:hover {
  color: var(--jxzn-text-hover);
}

.jxzn-nav__item.is-active {
  color: var(--jxzn-text);
  font-weight: 700;
}

/* ============================================================
 * Footer
 * ============================================================ */

.jxzn-footer {
  background: var(--jxzn-bg);
  padding: 4.1667vw 4.5833vw 3.125vw;  /* 80 88 60 → 4K 翻倍 */
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5.1042vw;                        /* 98 */
}

.jxzn-footer__cols {
  display: flex;
  gap: 3.125vw;                         /* 60 */
  align-items: flex-start;
}

.jxzn-footer__col {
  display: flex;
  flex-direction: column;
  gap: 1.9271vw;                        /* 37 */
  align-items: flex-start;
}

.jxzn-footer__col h3 {
  font-size: var(--jxzn-fs-footer-title);
  line-height: 1.6;                     /* 32/20 unitless，跟字号呼吸 */
  font-weight: 700;
  color: var(--jxzn-text);
  white-space: nowrap;
}

.jxzn-footer__col ul {
  display: flex;
  flex-direction: column;
}

.jxzn-footer__col ul li {
  font-size: var(--jxzn-fs-footer-item);
  line-height: 2.1111;                  /* 38/18 unitless，4K 自动加大行距 */
  color: var(--jxzn-text-gray);
  white-space: nowrap;
}

.jxzn-footer__col ul li a {
  color: inherit;
  display: inline-block;
}

.jxzn-footer__col ul li a:hover {
  color: var(--jxzn-text);
}

.jxzn-footer__col--solution .jxzn-footer__solution-text.is-short {
  display: none;
}

/* 两级菜单：父项 + 子项缩进；无子项时即同级平铺 */
.jxzn-footer__col--solution .jxzn-footer__solution-list {
  display: flex;
  flex-direction: column;
  gap: 0.5em;
}
.jxzn-footer__col--solution .jxzn-footer__solution-sub {
  display: flex;
  flex-direction: column;
  gap: 0.35em;
  margin-top: 0.35em;
  padding-left: 1em;
}
.jxzn-footer__col--solution .jxzn-footer__solution-sub li {
  color: var(--jxzn-text-gray);
}

.jxzn-footer__qrcode {
  width: 7.2917vw;                      /* 140 → 4K 280 */
  height: 7.2917vw;
  min-width: 90px;
  min-height: 90px;
  flex-shrink: 0;
}
.jxzn-footer__qrcode img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.jxzn-footer__logo {
  display: block;
  width: 14.5833vw;                     /* 280 → 4K 560 */
  height: 4.0625vw;                     /* 78 → 4K 156 */
  min-width: 180px;
  min-height: 50px;
  flex-shrink: 0;
}
.jxzn-footer__logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* ============================================================
 * 响应式（窄屏下避免出横向滚动条）
 * ============================================================ */

/* 1920×1080 及以下：英文内容偏宽，先把外层 padding/gap 收一档 */
@media (max-width: 1920px) {
  .jxzn-footer { padding: 70px 48px 56px; gap: 64px; }
  .jxzn-footer__cols { gap: 44px; }
}

@media (max-width: 1500px) {
  .jxzn-header { padding: 21px 60px; gap: 0; }
  .jxzn-nav { gap: 36px; }
  .jxzn-footer { padding: 56px 32px; gap: 44px; }
  .jxzn-footer__cols { gap: 32px; }
  .jxzn-footer__col h3 { font-size: 18px; }
  .jxzn-footer__col ul li { font-size: 16px; line-height: 32px; }
  .jxzn-footer__qrcode { width: 120px; height: 120px; }
  .jxzn-footer__logo { width: 220px; height: 62px; }
}

/* 中等屏（如 1366）：中文也开始拥挤，再压一档 */
@media (max-width: 1366px) {
  .jxzn-footer { padding: 48px 64px; gap: 32px; }   /* 两侧 64（≈1920 设计 88×1366/1920 的等比例）*/
  .jxzn-footer__cols { gap: 24px; }
  .jxzn-footer__col h3 { font-size: 16px; }
  .jxzn-footer__col ul li { font-size: 14px; line-height: 28px; }
}

@media (max-width: 1100px) {
  .jxzn-header { padding: 16px 24px; gap: 0; }
  .jxzn-nav { gap: 20px; }
  .jxzn-nav__item { font-size: 16px; }
  .jxzn-footer {
    flex-direction: column;
    padding: 60px 24px;
    gap: 40px;
  }
  .jxzn-footer__cols {
    flex-wrap: wrap;
    justify-content: center;
    gap: 32px 48px;
  }
  .jxzn-footer__col h3 { font-size: 18px; }
  .jxzn-footer__col ul li { font-size: 16px; line-height: 32px; }
  .jxzn-footer__qrcode { width: 140px; height: 140px; }
  .jxzn-footer__logo { width: 240px; height: 68px; }
}

/* ============================================================
 * 成功案例页
 * ============================================================ */

.jxzn-page--case {
  background: #000;
}

.jxzn-case-hero {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
  background: #05070d;
  color: #fff;
}

.jxzn-case-hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.jxzn-case-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(0,0,0,0.82) 0%, rgba(0,0,0,0.46) 42%, rgba(0,0,0,0.2) 100%),
    linear-gradient(180deg, rgba(0,0,0,0.2) 0%, rgba(0,0,0,0.88) 100%);
}

.jxzn-case-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.jxzn-case-hero__content {
  position: relative;
  z-index: 2;
  width: min(780px, 72vw);
  padding: 24vh 0 0 9.1667vw;
}

.jxzn-case-hero__kicker,
.jxzn-case-section__head span {
  display: inline-block;
  margin-bottom: 22px;
  font-size: clamp(14px, 1vw, 18px);
  line-height: 1;
  letter-spacing: 0.18em;
  color: rgba(255,255,255,0.58);
  text-transform: uppercase;
}

.jxzn-case-hero h1 {
  margin: 0;
  font-size: clamp(42px, 4.1667vw, 80px);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: 0;
}

.jxzn-case-hero p {
  width: min(640px, 100%);
  margin: 28px 0 0;
  font-size: clamp(17px, 1.25vw, 24px);
  line-height: 1.8;
  color: rgba(255,255,255,0.72);
}

.jxzn-case-hero__stats {
  position: absolute;
  left: 9.1667vw;
  right: 9.1667vw;
  bottom: 8vh;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid rgba(255,255,255,0.2);
  border-bottom: 1px solid rgba(255,255,255,0.14);
}

.jxzn-case-hero__stats div {
  min-height: 132px;
  padding: 28px 36px;
  border-right: 1px solid rgba(255,255,255,0.14);
}

.jxzn-case-hero__stats div:last-child {
  border-right: 0;
}

.jxzn-case-hero__stats strong {
  display: block;
  font-size: clamp(30px, 2.6vw, 50px);
  line-height: 1;
  font-weight: 700;
}

.jxzn-case-hero__stats span {
  display: block;
  margin-top: 14px;
  font-size: clamp(14px, 1.05vw, 20px);
  color: rgba(255,255,255,0.6);
}

.jxzn-case-section {
  position: relative;
  padding: 110px 9.1667vw;
  background: #000;
  color: #fff;
}

.jxzn-case-section--solar {
  background: #060b12;
}

.jxzn-case-section--scenes {
  background: #0b111c;
}

.jxzn-case-section--videos {
  background: #000;
}

.jxzn-case-section__head {
  width: min(860px, 100%);
  margin-bottom: 58px;
}

.jxzn-case-section__head h2 {
  margin: 0;
  font-size: clamp(32px, 2.7083vw, 52px);
  line-height: 1.3;
  font-weight: 700;
}

.jxzn-case-section__head p {
  margin: 20px 0 0;
  font-size: clamp(16px, 1.1vw, 21px);
  line-height: 1.8;
  color: rgba(255,255,255,0.64);
}

.jxzn-case-feature {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(380px, 0.9fr);
  gap: 64px;
  align-items: center;
}

.jxzn-case-feature__visual {
  min-height: 520px;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(circle at 50% 45%, rgba(69,125,255,0.22), rgba(69,125,255,0) 54%),
    linear-gradient(135deg, rgba(255,255,255,0.08), rgba(255,255,255,0.02));
  border: 1px solid rgba(255,255,255,0.1);
}

.jxzn-case-feature__visual img {
  width: min(72%, 560px);
  max-height: 430px;
  object-fit: contain;
}

.jxzn-case-feature__body h3 {
  margin: 0;
  font-size: clamp(26px, 2vw, 38px);
  line-height: 1.35;
}

.jxzn-case-feature__body p {
  margin: 24px 0 34px;
  font-size: clamp(16px, 1.05vw, 20px);
  line-height: 1.8;
  color: rgba(255,255,255,0.68);
}

.jxzn-case-feature__body ul {
  display: grid;
  gap: 18px;
}

.jxzn-case-feature__body li {
  position: relative;
  padding-left: 22px;
  font-size: clamp(15px, 1vw, 19px);
  line-height: 1.6;
  color: rgba(255,255,255,0.82);
}

.jxzn-case-feature__body li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #fff;
}

.jxzn-case-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
}

.jxzn-case-card {
  min-height: 430px;
  display: flex;
  flex-direction: column;
  background: rgba(255,255,255,0.055);
  border: 1px solid rgba(255,255,255,0.1);
  overflow: hidden;
}

.jxzn-case-card img {
  width: 100%;
  height: 230px;
  object-fit: contain;
  padding: 36px;
  background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.02));
}

.jxzn-case-card div {
  padding: 28px;
}

.jxzn-case-card h3 {
  margin: 0 0 14px;
  font-size: clamp(22px, 1.45vw, 28px);
  line-height: 1.35;
}

.jxzn-case-card p {
  margin: 0;
  font-size: clamp(15px, 0.94vw, 18px);
  line-height: 1.75;
  color: rgba(255,255,255,0.62);
}

.jxzn-case-video {
  width: 100%;
  background: #070707;
  border: 1px solid rgba(255,255,255,0.12);
}

.jxzn-case-video video {
  display: block;
  width: 100%;
  max-height: 1080px;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: #000;
}

@media (max-width: 1100px) {
  .jxzn-case-hero__content {
    width: auto;
    padding: 160px 24px 260px;
  }

  .jxzn-case-hero__stats {
    left: 24px;
    right: 24px;
    bottom: 40px;
  }

  .jxzn-case-hero__stats div {
    padding: 22px 18px;
  }

  .jxzn-case-section {
    padding: 78px 24px;
  }

  .jxzn-case-feature {
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .jxzn-case-feature__visual {
    min-height: 360px;
  }

  .jxzn-case-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 700px) {
  .jxzn-case-hero {
    min-height: auto;
  }

  .jxzn-case-hero__content {
    padding: 140px 20px 44px;
  }

  .jxzn-case-hero__stats {
    position: relative;
    left: auto;
    right: auto;
    bottom: auto;
    margin: 20px;
    grid-template-columns: 1fr;
  }

  .jxzn-case-hero__stats div {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid rgba(255,255,255,0.14);
  }

  .jxzn-case-hero__stats div:last-child {
    border-bottom: 0;
  }

  .jxzn-case-section {
    padding: 64px 20px;
  }

  .jxzn-case-feature__visual {
    min-height: 300px;
  }

  .jxzn-case-card {
    min-height: auto;
  }
}

/* ============================================================
 * 成功案例页 - 按 03 成功案例设计稿覆盖
 * ============================================================ */

.jxzn-page--case {
  background: #fff;
  color: #2c2c2c;
}

.jxzn-page--case .jxzn-main {
  background: #fff;
}

.jxzn-page--case {
  --jxzn-case-screen-h: 100vh;          /* 去掉 1080 cap，4K 自然撑高 */
}

.jxzn-page--case .jxzn-case-hero {
  position: relative;
  width: 100%;
  height: 19.7917vw;                    /* 380/1920，4K → 760 */
  min-height: 280px;                    /* 极窄屏底线 */
  overflow: hidden;
  background: #06162b;
  color: #fff;
}

.jxzn-page--case .jxzn-case-hero__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 45%;
}

/* 已删：旧版 .jxzn-page--case .jxzn-case-hero::after 18% 黑覆盖层
   原因：新 banner 结构（HTML 用 .jxzn-screen 不再用 .jxzn-case-hero）后该 overlay
   失去对应元素，且用户反馈 banner 灰蒙蒙；防止旧缓存命中导致灰盖，直接删除 */

.jxzn-page--case .jxzn-case-hero h1 {
  position: absolute;
  left: 50%;
  top: 51%;
  z-index: 2;
  transform: translate(-50%, -50%);
  margin: 0;
  /* 跟 about/tech/news 内容页 banner 字号统一 */
  font-size: clamp(36px, 3vw, 64px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.05em;
  color: #fff;
  white-space: nowrap;
}

/* ============================================================
 * ② 重点案例视频 轮播（重设计 Figma 107:387）：N slide + 进度条
 *   容器 1400/1920，卡片 1400×495（左视频 880 + 右面板 517）
 * ============================================================ */
.jxzn-case-feature {
  display: block;                        /* 覆盖全局 section 的 display:grid，避免标题与轮播被并排 */
  padding: 2.0833vw 0 5.2083vw;          /* 40 / 100 —— 标题 h2 已删，顶 padding 减半避免空白 */
  background:
    radial-gradient(120% 90% at 70% 10%, rgba(77,143,255,.18) 0%, rgba(5,8,16,0) 55%),
    radial-gradient(90% 80% at 10% 90%, rgba(108,75,240,.16) 0%, rgba(5,8,16,0) 50%),
    #05070f;
}
.jxzn-case-feature__title {
  margin: 0 0 2.6042vw;                  /* 50 */
  text-align: center;
  font-size: clamp(26px, 2.0833vw, 80px);/* 设计 40 / 4K 80 */
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.02em;
}
.jxzn-case-feature__carousel {
  width: 72.9167vw;                      /* 1400/1920 */
  max-width: 100vw;
  margin: 0 auto;
  box-sizing: border-box;
}
.jxzn-case-feature__viewport {
  overflow: hidden;
  border-radius: 1.0417vw;               /* 20 */
}
.jxzn-case-feature__track {
  display: flex;
  transition: transform .5s cubic-bezier(.4, 0, .2, 1);
}
.jxzn-case-feature__slide {
  flex: 0 0 100%;
  min-width: 0;
}
.jxzn-case-feature__card {
  display: flex;
  height: 25.7813vw;                     /* 495/1920 */
  min-height: 300px;
  border: 1px solid #b6e3ff;
  border-radius: 1.0417vw;               /* 20 */
  overflow: hidden;
  box-sizing: border-box;
}
.jxzn-case-feature__video {
  position: relative;
  width: 62.857%;                        /* 880/1400 */
  flex-shrink: 0;
  background: #2c2c2c;
}
.jxzn-case-feature__media {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}
.jxzn-case-feature__play {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 6.0417vw;                       /* 116/1920 */
  height: 6.0417vw;
  min-width: 64px;
  min-height: 64px;
  padding: 0;
  border: 0;
  background: none;
  cursor: pointer;
  transition: transform .25s ease, opacity .25s ease;
}
.jxzn-case-feature__play img {
  width: 100%;
  height: 100%;
  display: block;
}
.jxzn-case-feature__play:hover {
  transform: translate(-50%, -50%) scale(1.06);
}
.jxzn-case-feature__play.is-hidden {
  display: none;
}
.jxzn-case-feature__controls {
  --video-control-fill: 0%;
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 3;
  display: grid;
  gap: 5px;
  padding: 12px 18px 4px;
  color: #fff;
  background: linear-gradient(180deg, rgba(0,0,0,0) 0%, rgba(0,0,0,.68) 52%, rgba(0,0,0,.92) 100%);
  box-sizing: border-box;
  opacity: 0;
  transform: translateY(8px);
  pointer-events: none;
  transition: opacity .2s ease, transform .2s ease;
}
.jxzn-case-feature__slide.is-controls-visible .jxzn-case-feature__controls {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.jxzn-case-feature__control-row {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 26px;
}
.jxzn-case-feature__toggle,
.jxzn-case-feature__volume {
  flex: 0 0 auto;
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  border: 0;
  color: #fff;
  background: transparent;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.jxzn-case-feature__toggle-icon {
  position: relative;
  display: block;
  width: 16px;
  height: 18px;
}
.jxzn-case-feature__toggle-icon--play {
  display: none;
  width: 0;
  height: 0;
  border-top: 9px solid transparent;
  border-bottom: 9px solid transparent;
  border-left: 14px solid currentColor;
}
.jxzn-case-feature__toggle-icon--pause::before,
.jxzn-case-feature__toggle-icon--pause::after {
  content: "";
  position: absolute;
  top: 0;
  width: 5px;
  height: 18px;
  border-radius: 1px;
  background: currentColor;
}
.jxzn-case-feature__toggle-icon--pause::before {
  left: 1px;
}
.jxzn-case-feature__toggle-icon--pause::after {
  right: 1px;
}
.jxzn-case-feature__toggle:not(.is-playing) .jxzn-case-feature__toggle-icon--play {
  display: block;
}
.jxzn-case-feature__toggle:not(.is-playing) .jxzn-case-feature__toggle-icon--pause {
  display: none;
}
.jxzn-case-feature__time {
  display: inline-flex;
  align-items: baseline;
  gap: 5px;
  min-width: 82px;
  font-size: clamp(14px, 0.9vw, 18px);
  font-weight: 700;
  line-height: 1;
  color: #fff;
  text-shadow: 0 2px 10px rgba(0,0,0,.55);
}
.jxzn-case-feature__time-sep {
  opacity: .72;
}
.jxzn-case-feature__volume-wrap {
  position: relative;
  margin-left: auto;
  min-width: 120px;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 10px;
}
.jxzn-case-feature__volume-range {
  --fill: 0%;
  width: 72px;
  height: 18px;
  margin: 0;
  opacity: 0;
  transform: translateX(10px);
  appearance: none;
  -webkit-appearance: none;
  background: transparent;
  cursor: pointer;
  pointer-events: none;
  transition: opacity .18s ease, transform .18s ease;
}
.jxzn-case-feature__volume-wrap:hover .jxzn-case-feature__volume-range,
.jxzn-case-feature__volume-range:focus-visible {
  opacity: 1;
  transform: translateX(0);
  pointer-events: auto;
}
.jxzn-case-feature__progress {
  --fill: 0%;
  width: 100%;
  height: 10px;
  margin: 0;
  appearance: none;
  -webkit-appearance: none;
  background: transparent;
  cursor: pointer;
}
.jxzn-case-feature__progress::-webkit-slider-runnable-track,
.jxzn-case-feature__volume-range::-webkit-slider-runnable-track {
  height: 4px;
  border-radius: 999px;
  background: linear-gradient(90deg, #fff 0%, #fff var(--fill), rgba(255,255,255,.38) var(--fill), rgba(255,255,255,.38) 100%);
}
.jxzn-case-feature__volume-range::-webkit-slider-runnable-track {
  height: 3px;
}
.jxzn-case-feature__progress::-webkit-slider-thumb,
.jxzn-case-feature__volume-range::-webkit-slider-thumb {
  width: 10px;
  height: 10px;
  margin-top: -3px;
  border: 0;
  border-radius: 50%;
  appearance: none;
  -webkit-appearance: none;
  background: #fff;
  box-shadow: 0 3px 12px rgba(0,0,0,.35);
}
.jxzn-case-feature__volume-range::-webkit-slider-thumb {
  width: 8px;
  height: 8px;
  margin-top: -2.5px;
}
.jxzn-case-feature__progress::-moz-range-track,
.jxzn-case-feature__volume-range::-moz-range-track {
  height: 4px;
  border-radius: 999px;
  background: rgba(255,255,255,.38);
}
.jxzn-case-feature__volume-range::-moz-range-track {
  height: 3px;
}
.jxzn-case-feature__progress::-moz-range-progress,
.jxzn-case-feature__volume-range::-moz-range-progress {
  height: 4px;
  border-radius: 999px;
  background: #fff;
}
.jxzn-case-feature__volume-range::-moz-range-progress {
  height: 3px;
}
.jxzn-case-feature__progress::-moz-range-thumb,
.jxzn-case-feature__volume-range::-moz-range-thumb {
  width: 10px;
  height: 10px;
  border: 0;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 3px 12px rgba(0,0,0,.35);
}
.jxzn-case-feature__volume-range::-moz-range-thumb {
  width: 8px;
  height: 8px;
}
.jxzn-case-feature__volume svg {
  width: 22px;
  height: 22px;
  display: block;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.jxzn-case-feature__volume-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.jxzn-case-feature__volume-icon--off,
.jxzn-case-feature__volume.is-muted .jxzn-case-feature__volume-icon--on {
  display: none;
}
.jxzn-case-feature__volume.is-muted .jxzn-case-feature__volume-icon--off {
  display: inline-flex;
}
.jxzn-case-feature__panel {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 3.125vw 2.2396vw 2.6042vw;    /* 60 / 43 / 50 */
  box-sizing: border-box;
}
.jxzn-case-feature__name {
  margin: 0;
  font-size: clamp(20px, 1.9792vw, 76px);/* 设计 38 / 4K 76 */
  font-weight: 700;
  line-height: 1.2;
  color: #fff;
}
/* 标题中【副标题】单独成行：负边距抵消全角括号左侧自带空白，与上一行左对齐 */
.jxzn-case-feature__name-bk {
  display: inline-block;
  margin-left: -0.5em;
}
.jxzn-case-feature__desc {
  margin: 0;
  font-size: clamp(14px, 1.1458vw, 44px);/* 设计 22 / 4K 44 */
  font-weight: 400;
  line-height: 1.727;                    /* 38/22 */
  color: #fff;
}
.jxzn-case-feature__rule {
  display: block;
  width: 3.8021vw;                       /* 73/1920 */
  height: 2px;
  background: linear-gradient(90deg, #b6e3ff 0%, #65a3ff 100%);
}
.jxzn-case-feature__tags {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.9375vw;                         /* 18 */
}
.jxzn-case-feature__tags li {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid #b6e3ff;
  border-radius: 0.5208vw;               /* 10 */
  padding: 0.3125vw 1.4583vw;            /* 6 / 28 */
  font-size: clamp(13px, 1.1458vw, 44px);/* 设计 22 / 4K 44 */
  font-weight: 500;
  line-height: 1.4;
  white-space: nowrap;
  background: linear-gradient(90deg, #b6e3ff 0%, #65a3ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
html[lang="en"] .jxzn-case-feature__panel {
  padding-top: clamp(20px, 2.3438vw, 90px);
  padding-bottom: clamp(18px, 2.0833vw, 80px);
}
html[lang="en"] .jxzn-case-feature__name {
  font-size: clamp(18px, 1.3021vw, 50px);
  line-height: 1.22;
}
html[lang="en"] .jxzn-case-feature__desc {
  font-size: clamp(13px, 0.8333vw, 32px);
  line-height: 1.55;
}
html[lang="en"] .jxzn-case-feature__tags {
  gap: clamp(8px, 0.625vw, 24px);
}
html[lang="en"] .jxzn-case-feature__tags li {
  padding: 0.2604vw 0.9375vw;
  font-size: clamp(12px, 0.7292vw, 28px);
  line-height: 1.25;
}
.jxzn-case-feature__dots {
  display: flex;
  justify-content: center;
  gap: 0.2083vw;                         /* 4，恢复原间距 */
  margin-top: 1.8229vw;                  /* 35 */
}
/* 视觉恢复原细条样式；只用上下 padding 放大点击热区，
   background-clip: content-box 让可见细条仍只有 height 那么高 */
.jxzn-case-feature__dot {
  box-sizing: content-box;
  width: 3.125vw;                        /* 60 */
  max-width: 91px;
  height: 4px;                           /* 恢复原细条 */
  min-height: 3px;
  padding: 20px 0;                       /* 上下各 20 → 热区 4+40=44px，更好戳 */
  border: 0;
  border-radius: 2px;                    /* 恢复原直角微圆 */
  background: rgba(255, 255, 255, .2);   /* 恢复原亮度 */
  background-clip: content-box;          /* 背景只画在内容区(细条)，padding 透明 */
  cursor: pointer;
  transition: background .3s ease;
  -webkit-tap-highlight-color: transparent;
}
.jxzn-case-feature__dot.is-active {
  background: linear-gradient(90deg, #b6e3ff 0%, #65a3ff 100%);
  background-clip: content-box;
}

/* —— 平板+移动端：视频在上、面板在下（原 900px 抬到 1023px 覆盖空档）—— */
@media (max-width: 1023px) {
  .jxzn-case-feature {
    padding: 36px 0 44px;
  }
  .jxzn-case-feature__title {
    font-size: 22px;
    margin-bottom: 24px;
  }
  .jxzn-case-feature__carousel {
    width: 90%;
  }
  .jxzn-case-feature__card {
    flex-direction: column;
    height: auto;
    min-height: 0;
  }
  .jxzn-case-feature__video {
    width: 100%;
    aspect-ratio: 16 / 9;
  }
  .jxzn-case-feature__play {
    width: 56px;
    height: 56px;
  }
  .jxzn-case-feature__controls {
    gap: 4px;
    padding: 10px 12px 7px;
  }
  .jxzn-case-feature__control-row {
    gap: 8px;
    min-height: 24px;
  }
  .jxzn-case-feature__toggle,
  .jxzn-case-feature__volume {
    width: 26px;
    height: 26px;
  }
  .jxzn-case-feature__toggle-icon {
    transform: scale(.75);
  }
  .jxzn-case-feature__time {
    min-width: 72px;
    gap: 4px;
    font-size: 13px;
  }
  .jxzn-case-feature__volume-wrap {
    min-width: 82px;
    gap: 6px;
  }
  .jxzn-case-feature__volume-range {
    width: 48px;
  }
  .jxzn-case-feature__volume svg {
    width: 20px;
    height: 20px;
  }
  .jxzn-case-feature__progress::-webkit-slider-runnable-track {
    height: 3px;
  }
  .jxzn-case-feature__progress::-webkit-slider-thumb {
    width: 9px;
    height: 9px;
    margin-top: -3px;
  }
  .jxzn-case-feature__panel {
    width: 100%;
    padding: 20px 18px 22px;
    gap: 14px;
    justify-content: flex-start;
  }
  .jxzn-case-feature__name {
    font-size: 19px;
  }
  .jxzn-case-feature__desc {
    font-size: 14px;
    line-height: 1.7;
  }
  .jxzn-case-feature__tags {
    gap: 10px;
  }
  .jxzn-case-feature__tags li {
    padding: 4px 14px;
    font-size: 13px;
  }
  .jxzn-case-feature__dots {
    gap: 4px;                   /* 恢复原间距 */
    margin-top: 18px;
  }
  .jxzn-case-feature__dot {
    width: 40px;
    height: 3px;                /* 恢复原细条 */
    min-height: 3px;
    padding: 20px 0;            /* 只放大热区 3+40=43px，好戳 */
  }
}

@media (max-width: 1023px) {
  html[lang="en"] .jxzn-case-feature__panel {
    padding: 18px 16px 20px;
    gap: 12px;
  }
  html[lang="en"] .jxzn-case-feature__name {
    font-size: 17px;
    line-height: 1.25;
  }
  html[lang="en"] .jxzn-case-feature__desc {
    font-size: 13px;
    line-height: 1.55;
  }
  html[lang="en"] .jxzn-case-feature__tags {
    gap: 8px;
  }
  html[lang="en"] .jxzn-case-feature__tags li {
    padding: 4px 10px;
    font-size: 12px;
    line-height: 1.25;
  }
}

.jxzn-page--case .jxzn-case-video {
  position: relative;
  width: 100%;
  height: var(--jxzn-case-screen-h);
  min-height: 39.5833vw;                /* 760/1920，4K → 1520 */
  overflow: hidden;
  background: #080d12;
  border: 0;
}

.jxzn-page--case .jxzn-case-video__cover,
.jxzn-page--case .jxzn-case-video__media {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  max-height: none;             /* 覆盖旧版 .jxzn-case-video video 的 max-height: 1080px */
  aspect-ratio: auto;           /* 覆盖旧版的 16/9，避免高度被压成一半 */
  object-fit: cover;
  object-position: center;
  background: transparent;
}

.jxzn-page--case .jxzn-case-video__shade {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(0,0,0,0.05) 0%, rgba(0,0,0,0.08) 58%, rgba(0,0,0,0.46) 100%),
    rgba(7, 16, 22, 0.28);
}

.jxzn-page--case .jxzn-case-video__play {
  position: absolute;
  left: 50%;
  top: 51%;
  z-index: 3;
  width: 6.5625vw;                      /* 126/1920，4K → 252 */
  height: 6.5625vw;
  min-width: 80px;
  min-height: 80px;
  transform: translate(-50%, -50%);
  border: clamp(2px, 0.2083vw, 8px) solid rgba(255,255,255,0.9);  /* 4 */
  border-radius: 50%;
  background: rgba(255,255,255,0.24);
  -webkit-backdrop-filter: blur(2px);
  backdrop-filter: blur(2px);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  transition: transform 0.25s ease, background 0.25s ease;
}

.jxzn-page--case .jxzn-case-video__play:hover {
  transform: translate(-50%, -50%) scale(1.04);
  background: rgba(255,255,255,0.32);
}

.jxzn-page--case .jxzn-case-video__play.is-hidden {
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, -50%) scale(0.5);
}

.jxzn-page--case .jxzn-case-video__play span {
  display: block;
  width: 0;
  height: 0;
  margin-left: 0.4688vw;                /* 9/1920 */
  border-top: 1.1458vw solid transparent;   /* 22 */
  border-bottom: 1.1458vw solid transparent;
  border-left: 1.6667vw solid rgba(255,255,255,0.95);  /* 32 */
}

.jxzn-page--case .jxzn-case-tabs {
  position: absolute;
  left: 50%;
  bottom: 6.6667vw;                     /* 128/1920，4K → 256 */
  z-index: 3;
  display: flex;
  gap: 0.625vw;                         /* 12 */
  transform: translateX(-50%);
}

.jxzn-page--case .jxzn-case-tabs__item {
  height: 2.1875vw;                     /* 42/1920，4K → 84 */
  min-height: 32px;
  min-width: 6.875vw;                   /* 132 */
  padding: 0 1.25vw;                    /* 24 */
  border: 0;
  border-radius: 999px;
  background: rgba(30, 38, 40, 0.66);
  color: rgba(255,255,255,0.66);
  font-size: clamp(14px, 1.1458vw, 44px);  /* 设计 22 / 4K 44 */
  font-weight: 500;
  line-height: 2.1875vw;                /* 跟 height 一致，等高居中 */
  white-space: nowrap;
  cursor: pointer;
  transition: background 0.22s ease, color 0.22s ease, transform 0.22s ease;
}

.jxzn-page--case .jxzn-case-tabs__item:hover {
  background: rgba(255,255,255,0.24);
  color: rgba(255,255,255,0.9);
}

.jxzn-page--case .jxzn-case-tabs__item:active {
  transform: scale(0.98);
}

.jxzn-page--case .jxzn-case-tabs__item.is-active {
  background: #fff;
  color: #191919;
  font-weight: 700;
}

.jxzn-page--case .jxzn-case-video__caption {
  position: absolute;
  left: 50%;
  bottom: 2.8646vw;                     /* 55/1920 */
  z-index: 3;
  width: min(46.875vw, calc(100% - 48px));  /* 900/1920 */
  transform: translateX(-50%);
  margin: 0;
  color: rgba(255,255,255,0.72);
  font-family: var(--jxzn-font);
  font-size: var(--jxzn-fs-body);
  font-weight: 300;
  line-height: 1.625;
  text-align: center;
  white-space: nowrap;
}

.jxzn-page--case .jxzn-case-clients {
  background: #fff;
  color: #2e2e2e;
  min-height: var(--jxzn-case-screen-h);
  padding: 3.75vw 1.25vw;               /* 72 24 */
  display: flex;
  align-items: center;
}

.jxzn-page--case .jxzn-case-clients__inner {
  width: min(49.4792vw, 100%);          /* 950/1920，4K → 1900 */
  margin: 0 auto;
}

.jxzn-page--case .jxzn-case-clients h2 {
  margin: 0 0 3.5417vw;                 /* 68/1920 */
  color: #262626;
  font-size: clamp(34px, 2.6vw, 100px); /* 设计 52 / 4K 100 */
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
  letter-spacing: 0;
}

.jxzn-page--case .jxzn-case-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.7708vw 1.3542vw;               /* 34 26 */
}

.jxzn-page--case .jxzn-case-card {
  min-height: 0;
  display: block;
  background: transparent;
  border: 0;
  overflow: visible;
  text-align: center;
}

.jxzn-page--case .jxzn-case-card:hover,
.jxzn-page--case .jxzn-case-card:focus-within {
  transform: none;
  box-shadow: none;
}

.jxzn-page--case .jxzn-case-card figure {
  position: relative;
  height: 11.875vw;                     /* 228/1920，4K → 456 */
  margin: 0;
  overflow: hidden;
  border-radius: 0.4167vw;              /* 8/1920 */
  background: #edf0f2;
  box-shadow: 0 0.4688vw 0.9375vw rgba(0,0,0,0.18);  /* 0 9px 18px */
}

.jxzn-page--case .jxzn-case-card figure > img:not(.jxzn-case-card__logo) {
  width: 100%;
  height: 100%;
  padding: 0;
  object-fit: cover;
  background: transparent;
  transition: transform 0.35s ease;
}

.jxzn-page--case .jxzn-case-card:hover figure > img:not(.jxzn-case-card__logo) {
  transform: scale(1.035);
}

.jxzn-page--case .jxzn-case-card figure::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: rgba(0,0,0,0.7);
  opacity: 0;
  transition: opacity 0.28s ease;
}

.jxzn-page--case .jxzn-case-card__logo {
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: 2;
  width: 58%;
  height: auto;
  padding: 0;
  object-fit: contain;
  opacity: 0;
  transform: translate(-50%, -46%) scale(0.96);
  background: transparent;
  transition: opacity 0.28s ease, transform 0.28s ease;
}

.jxzn-page--case .jxzn-case-card:hover figure > img:not(.jxzn-case-card__logo),
.jxzn-page--case .jxzn-case-card:focus-within figure > img:not(.jxzn-case-card__logo) {
  transform: scale(1.035);
}

.jxzn-page--case .jxzn-case-card:hover figure::after,
.jxzn-page--case .jxzn-case-card:focus-within figure::after {
  opacity: 1;
}

.jxzn-page--case .jxzn-case-card:hover .jxzn-case-card__logo,
.jxzn-page--case .jxzn-case-card:focus-within .jxzn-case-card__logo {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

.jxzn-page--case .jxzn-case-card h3 {
  margin: 0.9375vw 0 0;                 /* 18/1920 */
  color: #333;
  font-size: clamp(14px, 0.9375vw, 36px); /* 设计 18 / 4K 36 */
  font-weight: 700;
  line-height: 1.35;
  text-align: center;
}

.jxzn-page--case .jxzn-case-clients__note {
  margin: 4.4792vw auto 0;              /* 86/1920 */
  color: #888;
  font-family: var(--jxzn-font);
  font-size: var(--jxzn-fs-body);
  font-weight: 300;
  line-height: 1.625;
  text-align: center;
}

@media (max-width: 1100px) {
  .jxzn-page--case .jxzn-case-hero {
    height: 320px;
    min-height: 320px;
  }

  .jxzn-page--case .jxzn-case-video {
    height: min(62vw, 1080px);
    min-height: 460px;
  }

  .jxzn-page--case .jxzn-case-video__cover,
  .jxzn-page--case .jxzn-case-video__media,
  .jxzn-page--case .jxzn-case-video__shade {
    height: 100%;
    min-height: 0;
  }

  .jxzn-page--case .jxzn-case-video__play {
    width: 96px;
    height: 96px;
    border-width: 3px;
  }

  .jxzn-page--case .jxzn-case-video__play span {
    border-top-width: 17px;
    border-bottom-width: 17px;
    border-left-width: 25px;
  }

  .jxzn-page--case .jxzn-case-tabs {
    bottom: 92px;
  }

  .jxzn-page--case .jxzn-case-video__caption {
    bottom: 48px;
    white-space: normal;
  }

  .jxzn-page--case .jxzn-case-clients {
    min-height: auto;
    max-height: none;
    padding: 72px 24px 80px;
    display: block;
  }

  .jxzn-page--case .jxzn-case-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 700px) {
  .jxzn-page--case .jxzn-case-hero {
    height: 260px;
    min-height: 260px;
  }

  /* .jxzn-page--case .jxzn-case-hero h1 字号交给 clamp(36px, 3vw, 64px) 自动适配 */

  .jxzn-page--case .jxzn-case-video {
    height: 420px;
    min-height: 420px;
    max-height: none;
  }

  .jxzn-page--case .jxzn-case-video__cover,
  .jxzn-page--case .jxzn-case-video__media,
  .jxzn-page--case .jxzn-case-video__shade {
    height: 100%;
    min-height: 0;
  }

  .jxzn-page--case .jxzn-case-video__cover {
    object-position: center;
  }

  .jxzn-page--case .jxzn-case-video__play {
    width: 76px;
    height: 76px;
  }

  .jxzn-page--case .jxzn-case-tabs {
    bottom: 98px;
    gap: 8px;
  }

  .jxzn-page--case .jxzn-case-tabs__item {
    min-width: 102px;
    height: 34px;
    padding: 0 16px;
    font-size: 15px;
    line-height: 34px;
  }

  .jxzn-page--case .jxzn-case-video__caption {
    bottom: 32px;
    width: calc(100% - 36px);
    font-size: 13px;
  }

  .jxzn-page--case .jxzn-case-clients {
    padding: 58px 20px 72px;
    display: block;
  }

  .jxzn-page--case .jxzn-case-clients h2 {
    margin-bottom: 36px;
  }

  .jxzn-page--case .jxzn-case-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .jxzn-page--case .jxzn-case-card figure {
    height: 210px;
  }

  .jxzn-page--case .jxzn-case-clients__note {
    margin-top: 46px;
    font-size: 14px;
  }
}

/* ============================================================
 * Lang Switch — 中/EN（header 右侧）
 * ============================================================ */
.jxzn-lang {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
  margin-left: 32px;
  font-size: var(--jxzn-fs-nav);
  line-height: 32px;
  color: var(--jxzn-text-dim);
  font-weight: 400;
}
.jxzn-lang__item {
  cursor: pointer;
  padding: 0 2px;
  transition: color .2s;
}
.jxzn-lang__item:hover {
  color: var(--jxzn-text-hover);
}
.jxzn-lang__item.is-active {
  color: var(--jxzn-text);
  font-weight: 700;
}
.jxzn-lang__sep {
  opacity: .5;
  user-select: none;
}
@media (max-width: 1440px) {
  .jxzn-lang { font-size: 15px; margin-left: 24px; }
}
@media (max-width: 1024px) {
  .jxzn-lang { font-size: 14px; gap: 6px; margin-left: 16px; }
}

/* ============================================================
 * i18n: 英文场景下放宽固定宽度/nowrap 限制
 * 仅 <html lang="en"> 时生效，中文渲染完全不受影响
 * ============================================================ */

/* Hero 主标题：去固定宽 + 允许换行（英文长得多） */
.jxzn-hero__title:lang(en) {
  width: auto;
  max-width: 75vw;
  white-space: normal;
  line-height: 1.3;
}
.jxzn-hero__title:lang(en) .jxzn-hero__title-line2 {
  display: inline;        /* EN 不强制断行 */
  white-space: normal;
}

.jxzn-hero__title:lang(en).jxzn-hero__title--force-break .jxzn-hero__title-line2 {
  display: block;
}

/* Hero badge 胶囊：去固定宽高，用 min-width + padding 保中文设计感 */
.jxzn-hero__badge:lang(en) {
  width: auto;
  height: auto;
  min-width: 17.025vw;
  padding: 0.5em 1.5em;
  line-height: 1.4;
}

/* Screen 02 视频屏标题：英文比中文长得多，原 fixed left+width+text-align center 在
   内容超容器时不会居中（实际从容器左边向右溢出）→ 改 translateX(-50%) 真居中 */
.jxzn-video__title:lang(en) {
  left: 50%;
  width: auto;
  max-width: 90vw;
  transform: translateX(-50%);
}

/* 新闻列表标题：英文允许换行，不再单行省略号 */
.jxzn-screen--news .jxzn-screen__inner .message:lang(en) {
  width: auto;
  max-width: 674px;
  white-space: normal;
  overflow: visible;
  text-overflow: clip;
  word-break: normal;
  line-height: 1.35;
}

/* ============================================================
 * EN 全尺寸兜底 (2026-05-30 续)：以下元素 base 有 nowrap，
 * 英文太长撑出/被裁。所有视口下都允许换行。
 * ============================================================ */

/* Screen 3 一脑多体 主标题：54+ 字符撑出 */
.jxzn-field__title:lang(en),
.jxzn-brain-module__title:lang(en) {
  white-space: normal;
  line-height: 1.25;
}

/* CTA 背面 panel 文字（白色覆盖层）：base 全部 nowrap，EN 撑出 panel 被 face overflow:hidden 切 */
.jxzn-cta__back-title:lang(en),
.jxzn-cta__back-title-text:lang(en),
.jxzn-cta__back-title-text:lang(en) > span,
.jxzn-cta__back-footer:lang(en) {
  white-space: normal;
  overflow-wrap: break-word;
  word-break: normal;
  line-height: 1.3;
}

/* 标题区改成 column 让 icon 让位（横向 space-between 在 EN 长文本时挤死 icon）*/
.jxzn-cta__back-title:lang(en) {
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
}
.jxzn-cta__back-title:lang(en) .jxzn-cta__back-icon {
  align-self: flex-end;
}

/* Case 视频底部说明文字：英文长时允许换行 */
.jxzn-page--case .jxzn-case-video__caption:lang(en) {
  white-space: normal;
}

/* 荣誉认证副标题：英文太长会戳出屏幕，改成上下两行 + 允许换行 */
.jxzn-honors__subtitle:lang(en) {
  display: block;                    /* 取消 flex，让 strong/span 走 inline */
  width: 80vw;
  max-width: 1600px;
  white-space: normal;
  line-height: 1.4;
  height: auto;
}
.jxzn-honors__subtitle:lang(en) strong {
  display: inline;
  margin-right: 0.5em;
}
.jxzn-honors__subtitle:lang(en) span {
  display: inline;
}

/* 荣誉认证 pill 胶囊：英文文字宽，固定宽度撑不下 → 宽度自适应 */
.jxzn-honors__pill:lang(en) {
  width: auto;
  min-width: 10.9375vw;              /* 原中文设计宽，保最小尺寸 */
  height: auto;
  padding: 0.4em 1.4em;              /* em 跟字号，胶囊保持比例 */
  line-height: 1.2;
}

/* Footer 英文：长文本（"Business email: business@jiangxingai.com" 等）
   nowrap 会撑爆列宽，4K 上更严重 → 允许换行 */
.jxzn-footer:lang(en) .jxzn-footer__col ul li {
  white-space: normal;
  line-height: 1.5;                  /* 换行时行距收紧一点 */
}
/* 英文标题（"Core Technology" 等）也允许换行 */
.jxzn-footer:lang(en) .jxzn-footer__col h3 {
  white-space: normal;
  line-height: 1.3;
}

/* ============================================================
 * Screen 03 new: 一脑多体
 * ============================================================ */
.jxzn-screen--field-brain {
  --jxzn-field-fit-scale: 1;
  --jxzn-field-diagram-gap: 54px;
  --jxzn-field-bottom-gap: 52px;
  --jxzn-field-diagram-collapse: 0px;
  --jxzn-field-bottom-collapse: 0px;
  height: 100vh;
  height: 100dvh;
  min-height: 100vh;
  min-height: 100dvh;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 12% 92%, rgba(154, 188, 231, 0.62) 0%, rgba(50, 79, 132, 0.34) 24%, transparent 48%),
    radial-gradient(ellipse at 74% 60%, rgba(73, 85, 177, 0.24) 0%, transparent 43%),
    #030405;
  color: #fff;
}

.jxzn-screen--field-brain .jxzn-screen__inner {
  height: 100%;
  min-height: 100%;
  overflow: hidden;
}

.jxzn-screen--field-brain::before {
  content: "";
  position: absolute;
  left: -10%;
  right: -10%;
  bottom: 18%;
  height: 24%;
  background: linear-gradient(12deg, rgba(209, 224, 247, 0.68), rgba(79, 112, 217, 0.28) 48%, transparent 72%);
  filter: blur(10px);
  opacity: 0.72;
  transform: rotate(3deg);
}

.jxzn-field__content {
  position: relative;
  z-index: 2;
  width: min(1200px, calc(100vw - 160px));
  min-height: 100vh;
  margin: 0 auto;
  padding: 62px 0 70px;
  box-sizing: border-box;
  /* 垂直居中：内容不足一屏时居中，内容超高时 padding 作最小上下间距 */
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.jxzn-field__title,
.jxzn-brain-module__title {
  margin: 0 auto;
  color: #fff;
  font-family: "Source Han Sans SC", var(--jxzn-font);
  font-size: 48px;
  font-weight: 700;
  line-height: 1.22;
  text-align: center;
  letter-spacing: 0;
  white-space: normal;
  overflow-wrap: anywhere;
  word-break: normal;
}

.jxzn-field__subtitle {
  margin: 34px auto 0;
  color: rgba(255, 255, 255, 0.92);
  font-family: "Source Han Sans SC", var(--jxzn-font);
  font-size: var(--jxzn-fs-subtitle);   /* 统一副标题（原写死 22px，1080p 值不变）*/
  font-weight: 600;
  line-height: 1.45;
  text-align: center;
  letter-spacing: 0;
  white-space: normal;
  overflow-wrap: anywhere;
  word-break: normal;
}

/* 英文副标题比对应中文长太多，nowrap 会撑爆视口宽度
   英文下允许换行 + 限宽居中 */
html[lang="en"] .jxzn-field__subtitle {
  max-width: min(1100px, 80vw);
}

.jxzn-field__diagram {
  position: relative;
  width: 100%;
  height: 455px;
  margin-top: var(--jxzn-field-diagram-gap);
  margin-bottom: var(--jxzn-field-diagram-collapse);
  transform: scale(var(--jxzn-field-fit-scale));
  transform-origin: center top;
  will-change: transform;
}

/* 核环发光图：图本身已带 alpha（黑底已 PIL 处理为透明），不需要 mix-blend-mode
   —— 之前用 screen 在 .jxzn-field__diagram 这个空 stacking context 里无合成目标，
   等效于无效，反而让黑底矩形遮住父级亮光带。换成 alpha webp 后透明真正生效。
   叙事控制：默认 opacity:0 + scale 0.95，进入屏第 3 阶段由 JS 加 .is-ring-in 触发 transition。 */
.jxzn-field__diagram::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("../img/jxzn-field__core-ring.webp") center center / contain no-repeat;
  pointer-events: none;
  z-index: 0;
  opacity: 1;          /* 默认显示（JS 不执行也能看到，绝不整屏空）*/
  transform: none;
}
/* JS 准备进场动画时给 .jxzn-field__diagram 加 .anim-prep：先隐藏，再由 .is-ring-in 揭示 */
.jxzn-field__diagram.anim-prep::before {
  opacity: 0;
  transform: scale(0.95);
  transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}
.jxzn-field__diagram.anim-prep.is-ring-in::before {
  opacity: 1;
  transform: scale(1);
}

.jxzn-field__card {
  position: absolute;
  width: 324px;
  height: 170px;
  box-sizing: border-box;
}

.jxzn-field__card--dog,
.jxzn-field__card--drone {
  top: 28px;
}

.jxzn-field__card--camera,
.jxzn-field__card--device {
  bottom: 27px;
}

.jxzn-field__card--robot img {
  margin-bottom: 27px;
}

.jxzn-field__card--dog,
.jxzn-field__card--camera {
  left: 0;
}

.jxzn-field__card--drone,
.jxzn-field__card--device {
  right: 0;
}

.jxzn-field__card::before {
  display: none;
}

.jxzn-field__card::after {
  display: none;
}

.jxzn-field__card--dog::before,
.jxzn-field__card--camera::before {
  left: 100%;
}

.jxzn-field__card--drone::before,
.jxzn-field__card--device::before {
  right: 100%;
  transform: rotate(180deg);
}

.jxzn-field__card--dog::after,
.jxzn-field__card--camera::after {
  right: -5px;
}

.jxzn-field__card--drone::after,
.jxzn-field__card--device::after {
  left: -5px;
}

.jxzn-field__image-placeholder {
  position: absolute;
  left: 50%;
  top: 45px;
  transform: translateX(-50%);
  width: 150px;
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(200, 232, 255, 0.72);
  font-size: 13px;
  white-space: nowrap;
}

.jxzn-field__card--dog .jxzn-field__image-placeholder {
  top: 25px;
}

.jxzn-field__card strong {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 18px;
  color: #fff;
  font-size: 21px;
  font-weight: 700;
  line-height: 1;
  text-align: center;
  white-space: nowrap;
}

.jxzn-field__core {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 260px;
  height: 260px;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

/* A：中央 core 的 3 层装饰环 —— 不同速度 / 不同方向旋转，形成视差感
   - .jxzn-field__core-ring (真实 span):  60s 顺时针  (主圈虚线)
   - ::before:                            90s 逆时针  (中环虚点)
   - ::after:                             120s 顺时针 + 3.5s 呼吸  (外环实线 + 光晕脉冲) */
.jxzn-field__core-ring,
.jxzn-field__core::before,
.jxzn-field__core::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  box-sizing: border-box;
}

.jxzn-field__core-ring {
  inset: -8px;
  border: 2px dashed rgba(120, 195, 255, 0.55);
  animation: jxzn-core-rotate 60s linear infinite;
}

.jxzn-field__core::before {
  inset: -24px;
  border: 2px dotted rgba(24, 206, 255, 0.8);
  opacity: 0.86;
  animation: jxzn-core-rotate-rev 90s linear infinite;
}

.jxzn-field__core::after {
  inset: -52px;
  border: 1px solid rgba(45, 119, 255, 0.26);
  box-shadow: inset 0 0 0 22px rgba(28, 124, 255, 0.05);
  animation:
    jxzn-core-rotate 120s linear infinite,
    jxzn-core-pulse 3.5s ease-in-out infinite;
}

@keyframes jxzn-core-rotate     { from { transform: rotate(0deg); }   to { transform: rotate(360deg); } }
@keyframes jxzn-core-rotate-rev { from { transform: rotate(360deg); } to { transform: rotate(0deg); } }
@keyframes jxzn-core-pulse {
  0%, 100% { opacity: 0.85; }
  50%      { opacity: 1; }
}

.jxzn-field__core strong {
  position: relative;
  z-index: 2;
  font-size: 25px;
  font-weight: 700;
  line-height: 1.28;
}

.jxzn-field__core em {
  position: relative;
  z-index: 2;
  margin-top: 12px;
  padding: 8px 18px;
  border-radius: 999px;
  background: linear-gradient(90deg, #a8dcff, #69a7ff);
  color: #00162b;
  font-size: 18px;
  font-style: normal;
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
}

.jxzn-field__bottom {
  display: grid;
  grid-template-columns: 464px 1fr;
  gap: 24px;
  align-items: center;
  margin-top: var(--jxzn-field-bottom-gap);
  margin-bottom: var(--jxzn-field-bottom-collapse);
  transform: scale(var(--jxzn-field-fit-scale));
  transform-origin: center top;
  will-change: transform;
}

.jxzn-field__map {
  position: relative;
  height: 274px;
  border: 1px solid rgba(136, 190, 255, 0.88);
  border-radius: 6px;
  background: linear-gradient(135deg, rgba(5, 23, 50, 0.88), rgba(2, 13, 30, 0.96));
  box-shadow: inset 0 0 30px rgba(42, 140, 255, 0.18);
  overflow: hidden;
}

.jxzn-field__map > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.jxzn-field__map > strong {
  position: absolute;
  left: 12px;
  top: 14px;
  z-index: 2;
  font-size: 17px;
  line-height: 1;
  white-space: nowrap;
}

.jxzn-field__map-placeholder {
  position: absolute;
  inset: 42px 28px 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px dashed rgba(100, 190, 255, 0.55);
  border-radius: 12px;
  background:
    linear-gradient(135deg, rgba(8, 88, 178, 0.16), rgba(4, 29, 69, 0.18)),
    repeating-linear-gradient(30deg, transparent 0 18px, rgba(69, 167, 255, 0.12) 19px 20px);
  color: rgba(197, 232, 255, 0.75);
  font-size: 18px;
  white-space: nowrap;
}

.jxzn-field__features {
  display: grid;
  grid-template-columns: repeat(2, minmax(230px, 1fr));
  gap: 46px 20px;
  margin: 0;
  padding: 0;
}

.jxzn-field__features li {
  display: grid;
  grid-template-columns: 76px 1fr;
  grid-template-areas: "icon title" "icon desc";
  column-gap: 10px;
  align-items: center;
}

.jxzn-field__features span {
  grid-area: icon;
  width: 66px;
  height: 66px;
  border: 2px solid rgba(146, 211, 255, 0.94);
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: #9ed7ff;
  font-size: 30px;
  font-weight: 700;
  box-shadow: inset 0 0 18px rgba(58, 150, 255, 0.16);
}

.jxzn-field__features span::before {
  content: attr(data-icon);
}

.jxzn-field__features strong {
  grid-area: title;
  font-size: 27px;
  font-weight: 700;
  line-height: 1.1;
  white-space: nowrap;
}

.jxzn-field__features em {
  grid-area: desc;
  margin-top: 8px;
  color: rgba(255, 255, 255, 0.88);
  font-size: 19px;
  font-style: normal;
  line-height: 1.35;
  white-space: nowrap;
}

/* 英文比中文长很多，nowrap 会让 features 4 项相互重叠
   英文下解除 nowrap，允许标题/描述换行 */
html[lang="en"] .jxzn-field__features strong,
html[lang="en"] .jxzn-field__features em {
  white-space: normal;
  word-break: normal;
  overflow-wrap: anywhere;
}

/* ============================================================
 * Screen 04 new: 具身智能大脑模组
 * ============================================================ */
.jxzn-screen--brain-module {
  height: 100vh;
  height: 100dvh;
  min-height: 100vh;
  min-height: 100dvh;
  overflow: hidden;
  background: #FFFFFF;
  color: #000;
  isolation: isolate;
}

.jxzn-screen--brain-module .jxzn-screen__inner {
  height: 100%;
  min-height: 100%;
}

.jxzn-brain-module__content {
  --jxzn-brain-content-pad-top: clamp(58px, 7.2222vh, 78px);
  --jxzn-brain-showcase-gap: clamp(22px, 3.1481vh, 34px);
  --jxzn-brain-media-width: min(31.5104vw, 605px);
  --jxzn-brain-media-height: min(68vh, 740px);
  z-index: 1;
  width: min(1200px, calc(100vw - 120px));
  min-height: 100vh;
  margin: 0 auto;
  padding: var(--jxzn-brain-content-pad-top) 0 clamp(34px, 5.5556vh, 60px);
  box-sizing: border-box;
}

.jxzn-brain-module__layout {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) var(--jxzn-brain-media-width) minmax(220px, 1fr);
  grid-template-rows: auto calc(var(--jxzn-brain-media-height) / 2) calc(var(--jxzn-brain-media-height) / 2) auto;
  align-items: start;
  column-gap: clamp(4px, 0.5208vw, 10px);
  row-gap: 0;
  width: 100%;
  min-height: calc(100vh - var(--jxzn-brain-content-pad-top) - clamp(34px, 5.5556vh, 60px));
}

.jxzn-brain-module__center {
  grid-column: 2;
  grid-row: 1 / 5;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: var(--jxzn-brain-media-width);
  min-width: 0;
  text-align: center;
}

.jxzn-screen--brain-module .jxzn-brain-module__title {
  z-index: 4;
  color: #000;
  backface-visibility: hidden;
}

.jxzn-brain-module__showcase {
  position: static;
  width: 100%;
  flex: 1 1 auto;
  min-height: 0;
  margin-top: var(--jxzn-brain-showcase-gap);
}

.jxzn-brain-module__copy {
  grid-column: 1;
  grid-row: 3;
  justify-self: end;
  align-self: center;
  width: min(340px, 100%);
  min-width: 0;
  color: #000;
  font-family: "Source Han Sans SC", var(--jxzn-font);
}

.jxzn-brain-module__points {
  width: fit-content;
  margin: 0 0 0 auto;
  padding: 0 0 0 1.12em;
}

.jxzn-brain-module__points li {
  list-style: disc;
  margin: 0 0 13px;
  font-size: clamp(15px, 0.9375vw, 18px);
  font-weight: 400;
  line-height: 1.35;
  letter-spacing: 0;
}

.jxzn-brain-module__points .jxzn-brain-module__desc-item {
  list-style: none;
  margin: 20px 0 0;
}

.jxzn-brain-module__desc {
  margin: 0;
  color: #8a8a8a;
  font-size: clamp(15px, 0.9375vw, 18px);
  font-weight: 400;
  line-height: 1.55;
  letter-spacing: 0;
}

.jxzn-brain-module__media {
  display: grid;
  width: 100%;
  height: var(--jxzn-brain-media-height);
  margin-top: var(--jxzn-brain-showcase-gap);
  overflow: hidden;
  z-index: 1;
  contain: paint;
  place-items: center;
}

.jxzn-brain-module__slide,
.jxzn-brain-module__image-placeholder,
.jxzn-brain-module__image {
  grid-area: 1 / 1;
  width: 100%;
  height: 100%;
  min-width: 0;
  min-height: 0;
}

.jxzn-brain-module__slide {
  display: grid;
  place-items: center;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.45s ease;
  will-change: opacity;
}

.jxzn-brain-module__slide.is-active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.jxzn-brain-module__image-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px dashed rgba(0, 0, 0, 0.18);
  background:
    linear-gradient(135deg, rgba(255,255,255,0.96), rgba(245,245,245,0.96));
  color: rgba(0, 0, 0, 0.36);
  font-family: "Source Han Sans SC", var(--jxzn-font);
  font-size: clamp(18px, 1.25vw, 24px);
  font-weight: 600;
}

.jxzn-brain-module__image {
  display: block;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  object-position: center center;
}

.jxzn-brain-module__progress {
  z-index: 3;
  width: min(243px, 18.6667vw);
  height: 4px;
  margin: clamp(14px, 2.2222vh, 24px) auto 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
}

.jxzn-brain-module__progress span {
  display: block;
  width: 100%;
  height: 100%;
  background: #E3E3E3;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.035), 0 1px 4px rgba(0, 0, 0, 0.04);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.jxzn-brain-module__progress span.is-active {
  background: linear-gradient(90deg, #b7e8ff 0%, #62a7ff 100%);
  box-shadow: none;
}

@media (max-width: 1440px) {
  .jxzn-brain-module__content {
    width: min(1080px, calc(100vw - 80px));
  }

  .jxzn-brain-module__copy {
    width: 310px;
  }

}

@media (max-width: 1023px) {
  .jxzn-screen--brain-module {
    height: auto;
    min-height: 100vh;
    min-height: 100dvh;
    overflow: visible;
  }

  .jxzn-brain-module__content {
    --jxzn-brain-content-pad-top: 86px;
    --jxzn-brain-showcase-gap: 28px;
    width: min(calc(100% - 40px), 680px);
    padding: 86px 0 56px;
  }

  .jxzn-brain-module__layout {
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: auto;
    gap: 28px;
    min-height: 0;
  }

  .jxzn-brain-module__center {
    grid-column: 1;
    grid-row: auto;
    width: 100%;
  }

  .jxzn-brain-module__copy,
  .jxzn-brain-module__media {
    width: 100%;
  }

  .jxzn-brain-module__copy {
    grid-column: 1;
    grid-row: auto;
    order: 2;
    justify-self: stretch;
    margin-top: 0;
  }

  .jxzn-brain-module__media {
    order: 1;
    height: min(52vh, 440px);
    min-height: 280px;
    margin-top: var(--jxzn-brain-showcase-gap);
  }

  .jxzn-brain-module__progress {
    width: min(243px, 48vw);
    margin: 26px auto 0;
  }
}

@media (max-width: 1280px) {
  .jxzn-field__content {
    width: min(1120px, calc(100vw - 80px));
  }

  .jxzn-field__card {
    width: 284px;
  }

  .jxzn-field__core {
    width: 220px;
    height: 220px;
  }

  .jxzn-field__bottom {
    grid-template-columns: 420px 1fr;
    gap: 34px;
  }
}

/* 一脑多体 + 大脑模组：原 900px 抬到 1023px（覆盖平板范围），避免 900-1023 空档崩布局 */
@media (max-width: 1023px) {
  .jxzn-field__content,
  .jxzn-brain-module__content {
    width: min(calc(100% - 40px), 640px);
    margin: 0 auto;
    padding: 88px 0 64px;
  }

  .jxzn-field__title,
  .jxzn-brain-module__title {
    font-size: 32px;
    white-space: normal;
  }

  .jxzn-field__subtitle {
    font-size: 17px;
    white-space: normal;
  }

  .jxzn-field__diagram {
    height: auto;
    display: grid;
    grid-template-columns: 1fr;
    gap: 18px;
    background: none;
  }

  .jxzn-field__diagram::before {
    display: none;
  }

  .jxzn-field__card,
  .jxzn-field__core {
    position: relative;
    inset: auto;
    left: auto;
    right: auto;
    top: auto;
    bottom: auto;
    transform: none;
    width: 100%;
  }

  .jxzn-field__card::before,
  .jxzn-field__card::after {
    display: none;
  }

  .jxzn-field__core {
    order: -1;
    width: 220px;
    height: 220px;
    margin: 0 auto 12px;
  }

  .jxzn-field__bottom,
  .jxzn-field__features {
    grid-template-columns: 1fr;
  }

  .jxzn-field__bottom {
    width: 100%;
    max-width: none;
    transform: none;
    transform-origin: initial;
    will-change: auto;
  }

  .jxzn-field__map {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    height: auto;
    width: 100%;
    aspect-ratio: auto;
  }

  .jxzn-field__map > img {
    display: block;
    width: auto;
    max-width: 100%;
    height: auto;
    object-fit: initial;
  }

  .jxzn-brain-module__stage {
    width: 100%;
    height: min(340px, 42vh);
    border-radius: 34px;
  }

  .jxzn-brain-module__tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 42px;
  }

  .jxzn-brain-module__tabs button {
    min-width: 168px;
    height: 46px;
    padding: 0 20px;
    font-size: 22px;
  }
}

/* ============================================================
 * RESPONSIVE OVERRIDES (2026-05-30, Phase 1 基础层)
 *
 * 规则：
 *   - >=1440px：本区块零生效（1080p 一像素不动）
 *   - 1024-1439px：字号 / 卡片 padding / 间距 收 ~10-15%
 *   - 768-1023px ：平板，多列网格简化（在各 Phase 增量加）
 *   - <768px     ：手机 1 列 + 轮播（在各 Phase 增量加）
 *
 * EN 兜底：
 *   - 1024 以下所有原本 nowrap 的标题/按钮文字允许换行
 *   - 容器 padding 留出 buffer 让 wrap 后不超
 * ============================================================ */

/* ---- 1024-1440px : 桌面 S（笔记本常见 1366/1280/1440）---- */
@media (max-width: 1440px) {
  /* nav 间距收（用 .jxzn-header 直接选 + nav gap）*/
  .jxzn-header { padding: 18px 48px; }
  .jxzn-nav { gap: 32px; }
  .jxzn-nav__item { font-size: 15px; }

  /* hero 标题字号收一档（避免笔记本 1280×800 撑爆）*/
  .jxzn-hero__title { font-size: clamp(36px, 4.2vw, 80px); }

  /* 各页 H2 主标题收 */
  .jxzn-field__title,
  .jxzn-brain-module__title,
  .jxzn-tech-field__title,
  .jxzn-case-hero__title,
  .jxzn-news-hero__title,
  .jxzn-video__headline-title,
  .jxzn-video__title { font-size: clamp(28px, 2.4vw, 42px); }

  /* 副标题 */
  .jxzn-field__subtitle,
  .jxzn-tech-field__subtitle { font-size: clamp(14px, 1.0vw, 18px); }

  .jxzn-video__copy {
    top: clamp(70px, 9.2vh, 96px);
  }

  .jxzn-video__actions {
    bottom: clamp(58px, 8.2vh, 86px);
    gap: 16px;
  }

  .jxzn-video__case-link {
    min-width: 200px;
    height: 36px;
    padding: 0 24px;
    font-size: clamp(22px, 1.8vw, 26px);
  }

  /* Screen 2 顶部数据条（升级选择器优先级）*/
  .jxzn-screen--video .jxzn-video__stats-bar { padding: 14px 28px; gap: 18px; }
  .jxzn-screen--video .jxzn-video__stats-bar .jxzn-video__stats-item { font-size: clamp(14px, 1.1vw, 18px); }

  /* CTA 卡片 */
  .jxzn-cta__card { padding: 28px; }

}

/* ---- 1024 以下 EN 兜底：所有 nowrap 标题允许换行 ---- */
@media (max-width: 1023px) {
  html[lang="en"] .jxzn-field__features strong,
  html[lang="en"] .jxzn-field__features em,
  html[lang="en"] .jxzn-cta__card strong,
  html[lang="en"] .jxzn-field__card strong,
  html[lang="en"] .jxzn-brain-module__tabs button,
  html[lang="en"] .jxzn-nav__item,
  html[lang="en"] .jxzn-video__stats-item,
  html[lang="en"] .jxzn-video__headline-title,
  html[lang="en"] .jxzn-video__case-link { white-space: normal !important; }
}

/* ---- 768-1023px : 平板（基础字号/间距收，layout 在各 Phase 加）---- */
@media (max-width: 1023px) {
  body { font-size: 15px; }

  /* nav 进一步收 */
  .jxzn-header { padding: 14px 28px; gap: 0; }
  .jxzn-nav { gap: 20px; }
  .jxzn-nav__item { font-size: 14px; }

  /* 主标题再收 */
  .jxzn-hero__title { font-size: clamp(28px, 5vw, 52px); }
  .jxzn-field__title,
  .jxzn-brain-module__title,
  .jxzn-tech-field__title,
  .jxzn-case-hero__title,
  .jxzn-news-hero__title,
  .jxzn-video__headline-title,
  .jxzn-video__title { font-size: clamp(22px, 3.2vw, 32px); }

  .jxzn-video__copy {
    top: clamp(76px, 10vh, 92px);
    width: min(88vw, 680px);
  }

  .jxzn-video__actions {
    width: min(88vw, 460px);
  }

  .jxzn-video__case-link {
    min-width: 0;
    flex: 1 1 0;
    font-size: 20px;
  }

  /* 卡片 padding */
  .jxzn-cta__card { padding: 20px; }

  /* Screen 2 数据条改 2x2 wrap（升级优先级）*/
  .jxzn-screen--video .jxzn-video__stats-bar {
    flex-wrap: wrap;
    justify-content: center;
    padding: 12px 20px;
    gap: 10px 20px;
    max-width: calc(100% - 32px);
    left: 50%;
    transform: translateX(-50%);
  }
  .jxzn-screen--video .jxzn-video__stats-bar .jxzn-video__stats-item {
    flex: 0 0 calc(50% - 20px);
    text-align: center;
    font-size: 14px;
  }
  /* 2x2 wrap 后中间 · 分隔在第 2 个和第 4 个之前是不需要的（换行边缘）*/
  .jxzn-screen--video .jxzn-video__stats-bar .jxzn-video__stats-item:nth-child(odd)::before {
    display: none;
  }
}

/* ---- <768px : 手机基础字号（layout 在 Phase 2-6 加）---- */
@media (max-width: 767px) {
  body { font-size: 14px; }

  /* hero（首页） */
  .jxzn-screen--hero .jxzn-hero__title { font-size: clamp(22px, 6.5vw, 40px); line-height: 1.25; }
  .jxzn-hero__content { padding: 0 20px; }

  /* H2 */
  .jxzn-field__title,
  .jxzn-brain-module__title,
  .jxzn-tech-field__title,
  .jxzn-case-hero__title,
  .jxzn-news-hero__title,
  .jxzn-video__headline-title,
  .jxzn-video__title { font-size: clamp(20px, 4.5vw, 28px); }

  /* 副标题 */
  .jxzn-field__subtitle,
  .jxzn-tech-field__subtitle { font-size: 13px; line-height: 1.6; }

  .jxzn-video__copy {
    top: 82px;
    width: calc(100% - 32px);
  }

  .jxzn-video__headline-title {
    white-space: normal;
  }

  .jxzn-video__actions {
    bottom: 48px;
    width: calc(100% - 42px);
    gap: 10px;
  }

  .jxzn-video__case-link {
    height: 34px;
    padding: 0 14px;
    font-size: 16px;
  }

  /* Screen 2 数据条 4 段 stack（升级优先级）*/
  .jxzn-screen--video .jxzn-video__stats-bar {
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    padding: 10px 16px;
    bottom: 24px;
    max-width: calc(100% - 24px);
  }
  .jxzn-screen--video .jxzn-video__stats-bar .jxzn-video__stats-item {
    flex: 1 1 auto;
    width: 100%;
    font-size: 13px;
  }
  /* 所有段都不要 · 分隔，每行独立 */
  .jxzn-screen--video .jxzn-video__stats-bar .jxzn-video__stats-item::before {
    display: none;
  }

  /* CTA */
  .jxzn-cta__card { padding: 16px; }

  .jxzn-cta__note {
    white-space: normal;
    width: 100%;
    max-width: 100%;
    padding-inline: 4px;
    box-sizing: border-box;
    overflow-wrap: anywhere;
    word-break: break-word;
    font-size: clamp(12px, 3.2vw, 14px);
    line-height: 1.45;
  }

  /* --- Screen 3 一脑多体 移动端微调 --- */
  .jxzn-field__content,
  .jxzn-brain-module__content {
    --jxzn-brain-content-pad-top: 64px;
    width: calc(100% - 28px);
    padding: 64px 0 48px;
  }
  .jxzn-field__core {
    width: 160px;
    height: 160px;
  }
  .jxzn-field__core strong { font-size: 16px; }
  .jxzn-field__core em { font-size: 13px; }

  .jxzn-field__card {
    height: 130px;                    /* 原 170 */
  }
  .jxzn-field__image-placeholder {
    top: 18px;
    width: 110px;
    height: 50px;
  }
  .jxzn-field__card strong {
    font-size: 17px;
    bottom: 14px;
  }

  /* features 卡片更紧 */
  .jxzn-field__features li {
    padding: 14px 16px;
    gap: 10px;
  }
  .jxzn-field__features li strong { font-size: 15px; }
  .jxzn-field__features li em { font-size: 12px; }

  /* 地图缩高 */

  /* --- Screen 4 大脑模组 移动端 --- */
  .jxzn-brain-module__copy {
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .jxzn-brain-module__points {
    width: fit-content;
    max-width: calc(100% - 4em);
    margin-inline: auto;
    padding-inline: 2em;
    text-align: left;
    box-sizing: border-box;
  }

  .jxzn-brain-module__points li {
    list-style: disc;
    list-style-position: outside;
    text-align: left;
  }

  .jxzn-brain-module__tabs {
    flex-direction: column;
    gap: 10px;
  }
  .jxzn-brain-module__tabs button {
    width: 100%;
    min-width: 0;
    font-size: 16px;
  }

  /* --- 首页 Hero SP：absolute 位置改 flex 居中 --- */
  .jxzn-screen--hero .jxzn-hero__content {
    position: relative;
    inset: auto;
    width: 100%;
    height: 100%;
    padding: 0 20px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
  }
  .jxzn-screen--hero .jxzn-hero__title {
    position: static;
    left: auto;
    top: auto;
    width: 100%;
    max-width: 100%;
    font-size: clamp(22px, 6.5vw, 36px);
    letter-spacing: 0.05em;
    white-space: normal;
  }
  .jxzn-screen--hero .jxzn-hero__title .jxzn-hero__title-line2 {
    white-space: normal;
  }
  .jxzn-screen--hero .jxzn-hero__badge {
    position: static;
    left: auto;
    top: auto;
    margin-top: 16px;
    width: auto;
    min-width: 180px;
    height: auto;
    padding: 6px 14px;
    font-size: 13px;
  }

  /* --- Screen 6 荣誉认证 移动端：证书横滑轮播 ---
     覆盖原 900px 规则 + base 写死的 vw/h/object-fit/nowrap */
  .jxzn-honors__certs {
    flex-direction: row !important;
    width: 100% !important;
    height: auto !important;
    gap: 14px !important;
    margin: 0 -16px !important;
    padding: 8px 16px !important;
    overflow-x: auto !important;
    overflow-y: hidden !important;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior-x: contain;     /* 横滑到头不带动整页 */
    scroll-padding-left: 16px;
    scrollbar-width: none;
    align-items: stretch !important;
    justify-content: flex-start !important;
  }
  .jxzn-honors__certs::-webkit-scrollbar { display: none; }

  /* 月桂叶装饰在轮播里碍事，隐藏 */
  .jxzn-honors__laurel { display: none !important; }

  .jxzn-honors__cert {
    flex: 0 0 70vw !important;        /* 每张卡 70 视宽，露出下一张边缘 */
    width: 70vw !important;
    max-width: 280px !important;
    min-width: 220px !important;
    height: auto !important;
    margin: 0 !important;
    padding: 16px 14px 14px !important;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(170, 200, 255, 0.22);
    border-radius: 12px;
    box-sizing: border-box;
    text-align: center;
    scroll-snap-align: center;
  }
  .jxzn-honors__cert img {
    width: 100% !important;
    height: auto !important;
    max-height: 130px !important;
    object-fit: contain !important;
    border-radius: 6px;
    display: block;
    margin: 0 auto 10px !important;
  }
  .jxzn-honors__cert h3 {
    margin: 0 !important;
    font-size: 13px !important;
    line-height: 1.4 !important;
    white-space: normal !important;
    color: #fff;
  }

  /* 权威榜单：一行一条 */
  .jxzn-honors__rankings {
    width: calc(100% + 16px);
    max-width: none;
    margin-left: -8px;
    margin-right: -8px;
    padding: 0;
    gap: 12px;
  }

  .jxzn-honors__rankings p {
    display: flex !important;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: 8px;
    text-align: center !important;
  }

  .jxzn-honors__rankings p span {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    gap: 6px;
    font-size: clamp(14px, 3.9vw, 16px);
    line-height: 1.35;
  }

  .jxzn-honors__rankings span::before,
  .jxzn-honors__rankings span::after {
    width: 9px;
    height: 20px;
    flex-shrink: 0;
  }
}

/* ============================================================
 * 汉堡菜单 + 抽屉 nav（仅 <1024 启用）
 * ============================================================ */
.jxzn-header__burger {
  display: none;                       /* 桌面隐藏 */
  position: relative;
  width: 36px;
  height: 28px;
  padding: 0;
  margin-left: 12px;
  background: transparent;
  border: 0;
  cursor: pointer;
  z-index: 102;
  flex-shrink: 0;
}
.jxzn-header__burger span {
  display: block;
  position: absolute;
  left: 4px;
  right: 4px;
  height: 2px;
  background: #fff;
  border-radius: 1px;
  transition: transform 0.28s ease, opacity 0.2s ease, top 0.28s ease;
}
.jxzn-header__burger span:nth-child(1) { top: 6px; }
.jxzn-header__burger span:nth-child(2) { top: 13px; }
.jxzn-header__burger span:nth-child(3) { top: 20px; }
.jxzn-header__burger.is-active span:nth-child(1) {
  top: 13px;
  transform: rotate(45deg);
}
.jxzn-header__burger.is-active span:nth-child(2) { opacity: 0; }
.jxzn-header__burger.is-active span:nth-child(3) {
  top: 13px;
  transform: rotate(-45deg);
}

/* 锁住 body 滚动（抽屉打开时）*/
body.jxzn-has-nav-open { overflow: hidden; }

@media (max-width: 1023px) {
  /* 显示汉堡 */
  .jxzn-header__burger { display: block; }

  /* nav 改抽屉：纯位移滑入（不要 opacity 淡入，避免"透→实"顿挫感）
     默认 translateY(-100%) 完全藏到屏幕外上方，is-open 滑回来

     ⚠ .jxzn-header 有 transform 创建了 containing block，
        position:fixed 实际锚到 header (100px 高)，不是 viewport。
        所以这里用 height:100vh/100dvh 撑满，不能靠 bottom:0。
        100dvh 处理移动浏览器 URL 栏伸缩 */
  .jxzn-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100vw;
    height: 100vh;
    height: 100dvh;
    padding: 88px 32px 40px;
    background: #050a18;                /* 不透明纯黑蓝 */
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    gap: 24px;
    z-index: 101;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-100%);       /* 整体藏到屏幕外上方 */
    transition: transform 0.32s cubic-bezier(0.4, 0, 0.2, 1), visibility 0s 0.32s;
    margin-left: 0 !important;
    flex: 1 1 auto;
    will-change: transform;
    overflow-y: auto;                   /* 链接多时可滚 */
    -webkit-overflow-scrolling: touch;  /* iOS 惯性滚动 */
    overscroll-behavior: contain;       /* 滚到底不橡皮筋带动整页 */
  }
  .jxzn-nav.is-open {
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
    transition: transform 0.32s cubic-bezier(0.4, 0, 0.2, 1), visibility 0s 0s;
  }
  .jxzn-nav__item {
    font-size: 20px;
    padding: 12px 0;
    width: 100%;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }
  .jxzn-nav__item:last-child { border-bottom: none; }

  /* lang 切换器留在 header 上（不进抽屉），靠右排 */
  .jxzn-lang { margin-left: auto; margin-right: 8px; }

  /* PC 的"滚动/闲置自动隐藏" header 在 SP 上不合理，强制可见 */
  .jxzn-header.is-hidden { transform: none !important; opacity: 1 !important; pointer-events: auto !important; }

  /* 抽屉打开时 header 必须实底，不能因 inHero 还是透明 */
  body.jxzn-has-nav-open .jxzn-header {
    background: #050a18 !important;
    transform: none !important;
    opacity: 1 !important;
  }
}

/* ============================================================
 * footer 桌面 footer 已有 1100/1366 等媒体查询，
 * 这里补足 <768 进一步紧凑（基础规则在原 1100 块）
 * ============================================================ */
@media (max-width: 767px) {
  .jxzn-footer {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-template-areas:
      "links links"
      "qrcode logo";
    align-items: center;
    width: 100%;
    box-sizing: border-box;
    column-gap: 14px;
    row-gap: 28px;
    padding: 40px 20px 32px;
  }

  /* 各区块纵向排列：标题 + 下方两列菜单 */
  .jxzn-footer__cols {
    grid-area: links;
    display: flex;
    flex-direction: column;
    gap: 24px;
    width: 100%;
    flex-wrap: unset;
    justify-content: unset;
    align-items: stretch;
  }

  .jxzn-footer__col {
    width: 100%;
    gap: 10px;
    align-items: flex-start;
  }

  .jxzn-footer__col h3 {
    font-size: 17px;
    margin: 0;
    white-space: normal;
    line-height: 1.35;
    width: 100%;
  }

  .jxzn-footer__col ul {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px 14px;
    width: 100%;
  }

  .jxzn-footer__col ul li {
    font-size: 15px;
    line-height: 1.7;
    white-space: normal;
    word-break: break-word;
  }

  .jxzn-footer__col ul li a {
    display: inline;
  }

  /* 联系我们：邮箱较长，独占一行 */
  .jxzn-footer__cols > .jxzn-footer__col:last-child ul li:first-child {
    grid-column: 1 / -1;
  }

  .jxzn-footer__col--solution .jxzn-footer__solution-text.is-full { display: none; }
  .jxzn-footer__col--solution .jxzn-footer__solution-text.is-short { display: inline; }

  /* 解决方案列移动端也走单列层级（覆盖 .jxzn-footer__col ul 的两列网格） */
  .jxzn-footer__col--solution .jxzn-footer__solution-list {
    display: flex;
    flex-direction: column;
    grid-template-columns: none;
    gap: 0.5em;
  }
  .jxzn-footer__col--solution .jxzn-footer__solution-sub {
    display: flex;
    flex-direction: column;
    grid-template-columns: none;
    gap: 0.3em;
    margin-top: 0.3em;
    padding-left: 0.9em;
  }

  .jxzn-footer__qrcode {
    grid-area: qrcode;
    width: 96px;
    height: 96px;
    min-width: 0;
    min-height: 0;
    justify-self: start;
    align-self: center;
  }

  .jxzn-footer__logo {
    grid-area: logo;
    width: 100%;
    max-width: 160px;
    height: 44px;
    min-width: 0;
    min-height: 0;
    justify-self: start;
    align-self: center;
  }

  .jxzn-footer__bottom { font-size: 12px; flex-wrap: wrap; gap: 8px; }
}

@media (max-width: 767px) {
  .jxzn-screen--field-brain {
    height: auto;
    min-height: 0;
    overflow: visible;
  }

  .jxzn-screen--field-brain .jxzn-screen__inner {
    height: auto;
    min-height: 0;
    overflow: visible;
  }

  .jxzn-field__content {
    min-height: auto;
    justify-content: flex-start;
  }

  .jxzn-field__features {
    width: 100%;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px 12px;
  }

  .jxzn-field__features li {
    grid-template-columns: 1fr;
    grid-template-areas:
      "icon"
      "title"
      "desc";
    justify-items: center;
    text-align: center;
    row-gap: 6px;
    column-gap: 0;
    padding: 12px 8px;
  }

  .jxzn-field__features span {
    width: 52px;
    height: 52px;
  }

  .jxzn-field__features li strong {
    font-size: 14px;
    white-space: normal;
    line-height: 1.2;
  }

  .jxzn-field__features li em {
    margin-top: 0;
    font-size: 11px;
    white-space: normal;
    line-height: 1.35;
  }

  .jxzn-field__diagram--sp-orbit {
    display: block;
    width: 100%;
    max-width: none;
    aspect-ratio: 1200 / 450;
    height: auto;
    margin: 18px auto 0;
    background: url("../img/jxzn-field__core-ring.webp") center center / 100% auto no-repeat;
    overflow: hidden;
  }

  .jxzn-field__diagram--sp-orbit.anim-prep.is-ring-in {
    --jxzn-field-fit-scale: 1;
  }

  .jxzn-field__diagram--sp-orbit::before {
    display: none;
    content: "";
    position: absolute;
    inset: 0;
    left: auto;
    top: auto;
    width: auto;
    height: auto;
    background-position: center;
    background-size: contain;
    opacity: 1;
    transform: none;
  }

  .jxzn-field__diagram--sp-orbit.anim-prep::before {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .jxzn-field__diagram--sp-orbit.anim-prep.is-ring-in::before {
    opacity: 1;
    transform: none;
  }

  .jxzn-field__diagram--sp-orbit .jxzn-field__card,
  .jxzn-field__diagram--sp-orbit .jxzn-field__core {
    position: absolute;
    inset: auto;
  }

  .jxzn-field__diagram--sp-orbit .jxzn-field__card {
    z-index: 2;
    width: 27.5%;
    height: 34%;
    border: 0;
    border-radius: 0;
    background: none;
    box-shadow: none;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5%;
    padding: 6% 5%;
    text-align: center;
    overflow: visible;
  }

  .jxzn-field__diagram--sp-orbit .jxzn-field__card--dog {
    left: 0.4%;
    top: 2%;
    width: 24.5%;
    height: 30%;
  }

  .jxzn-field__diagram--sp-orbit .jxzn-field__card--drone {
    right: 0.4%;
    top: 4.4%;
  }

  .jxzn-field__diagram--sp-orbit .jxzn-field__card--camera {
    left: 0.8%;
    top: 52.2%;
  }

  .jxzn-field__diagram--sp-orbit .jxzn-field__card--device {
    right: 0.8%;
    top: 57.5%;
  }

  .jxzn-field__diagram--sp-orbit .jxzn-field__card::before,
  .jxzn-field__diagram--sp-orbit .jxzn-field__card::after {
    display: none;
  }

  .jxzn-field__diagram--sp-orbit .jxzn-field__image-placeholder {
    position: relative;
    left: auto;
    top: auto;
    transform: none;
    width: 74%;
    height: auto;
    flex: 0 1 auto;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .jxzn-field__diagram--sp-orbit .jxzn-field__card--dog .jxzn-field__image-placeholder {
    width: 66%;
  }

  .jxzn-field__diagram--sp-orbit .jxzn-field__card--camera .jxzn-field__image-placeholder {
    width: 40%;
  }

  .jxzn-field__diagram--sp-orbit .jxzn-field__card--drone .jxzn-field__image-placeholder {
    width: 76%;
  }

  .jxzn-field__diagram--sp-orbit .jxzn-field__card--device .jxzn-field__image-placeholder {
    width: 54%;
  }

  .jxzn-field__diagram--sp-orbit .jxzn-field__image-placeholder img {
    display: block;
    width: 100%;
    height: auto;
    max-width: 100%;
    max-height: none;
    object-fit: contain;
  }

  .jxzn-field__diagram--sp-orbit .jxzn-field__card--robot img {
    margin-bottom: -35%;
    height: 85%;
  }

  .jxzn-field__diagram--sp-orbit .jxzn-field__card strong {
    position: relative;
    left: auto;
    right: auto;
    bottom: auto;
    width: 100%;
    margin: 0;
    padding: 0 2px;
    flex: 0 0 auto;
    font-size: clamp(9px, 2.35vw, 11px);
    font-weight: 700;
    line-height: 1.05;
    white-space: nowrap !important;
    overflow: visible;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.45);
  }

  .jxzn-field__diagram--sp-orbit .jxzn-field__core {
    z-index: 3;
    left: 50%;
    top: 50.6%;
    width: 32.5%;
    height: 58%;
    margin: 0;
    transform: translate(-50%, -50%);
    box-sizing: border-box;
    padding: 0 2%;
  }

  .jxzn-field__diagram--sp-orbit .jxzn-field__core-ring,
  .jxzn-field__diagram--sp-orbit .jxzn-field__core::before,
  .jxzn-field__diagram--sp-orbit .jxzn-field__core::after {
    display: none;
  }

  .jxzn-field__diagram--sp-orbit .jxzn-field__core strong {
    display: block;
    max-width: 100%;
    font-size: clamp(9px, 1.55vw, 12px);
    line-height: 1.06;
    white-space: nowrap;
    letter-spacing: -0.01em;
    text-shadow: 0 4px 14px rgba(0, 0, 0, 0.55);
  }

  .jxzn-field__diagram--sp-orbit .jxzn-field__core em {
    margin-top: 4px;
    padding: 4px 10px;
    font-size: clamp(7px, 1.9vw, 8px);
    inset: auto;
  }
}

@media (max-width: 430px) {
  .jxzn-field__features {
    gap: 12px 10px;
  }

  .jxzn-field__features li {
    min-height: 132px;
    padding: 10px 8px;
  }

  .jxzn-field__features span {
    width: 48px;
    height: 48px;
  }

  .jxzn-field__features li strong {
    font-size: 13px;
  }

  .jxzn-field__features li em {
    font-size: 10px;
  }

  .jxzn-field__diagram--sp-orbit .jxzn-field__card {
    width: 27%;
    height: 33%;
    row-gap: 4%;
    padding: 7% 5%;
  }

  .jxzn-field__diagram--sp-orbit .jxzn-field__card--dog,
  .jxzn-field__diagram--sp-orbit .jxzn-field__card--drone {
    top: 5%;
  }

  .jxzn-field__diagram--sp-orbit .jxzn-field__card--dog {
    width: 24%;
    height: 30%;
  }

  .jxzn-field__diagram--sp-orbit .jxzn-field__card--camera {
    top: 53%;
  }

  .jxzn-field__diagram--sp-orbit .jxzn-field__card--device {
    top: 56%;
  }

  .jxzn-field__diagram--sp-orbit .jxzn-field__card strong {
    font-size: clamp(9px, 2.35vw, 11px);
  }

  .jxzn-field__diagram--sp-orbit .jxzn-field__core {
    width: 31.5%;
    height: 55%;
    top: 50.4%;
  }

  .jxzn-field__diagram--sp-orbit .jxzn-field__core strong {
    font-size: clamp(8px, 2.15vw, 10px);
    line-height: 1.04;
  }

  .jxzn-field__diagram--sp-orbit .jxzn-field__core em {
    margin-top: 3px;
    padding: 3px 9px;
    font-size: clamp(6px, 1.55vw, 7px);
  }
}

@media (max-width: 360px) {
  .jxzn-field__features {
    gap: 10px 8px;
  }

  .jxzn-field__features li {
    min-height: 124px;
    padding: 9px 6px;
  }

  .jxzn-field__features span {
    width: 44px;
    height: 44px;
  }

  .jxzn-field__features li strong {
    font-size: 12px;
  }

  .jxzn-field__features li em {
    font-size: 9px;
    line-height: 1.3;
  }

  .jxzn-field__diagram--sp-orbit .jxzn-field__card {
    width: 26.5%;
    height: 32%;
    padding: 6% 4.5%;
  }

  .jxzn-field__diagram--sp-orbit .jxzn-field__image-placeholder {
    width: 70%;
  }

  .jxzn-field__diagram--sp-orbit .jxzn-field__card--drone .jxzn-field__image-placeholder {
    width: 72%;
  }

  .jxzn-field__diagram--sp-orbit .jxzn-field__card strong {
    font-size: 9px;
    line-height: 1.02;
  }

  .jxzn-field__diagram--sp-orbit .jxzn-field__core {
    width: 30.5%;
    height: 52%;
  }

  .jxzn-field__diagram--sp-orbit .jxzn-field__core strong {
    font-size: 8px;
    line-height: 1.02;
  }

  .jxzn-field__diagram--sp-orbit .jxzn-field__core em {
    padding: 3px 8px;
    font-size: 6px;
  }
}

/* ============================================================
 * 中文 SP 内页标题统一（仅 max-width: 767px，首页除外）
 * ============================================================ */
@media (max-width: 767px) {
  html:not([lang="en"]) .jxzn-page__other .jxzn-hero__content,
  html:not([lang="en"]) .jxzn-page--solutions #solutions-hero .jxzn-hero__content {
    align-items: center;
    text-align: center;
  }

  html:not([lang="en"]) .jxzn-page__other .jxzn-hero__title,
  html:not([lang="en"]) .jxzn-disclosure-hero__title,
  html:not([lang="en"]) .jxzn-news-detail-hero__title {
    width: fit-content;
    max-width: calc(100vw - 40px);
    margin: 0 auto;
    font-size: clamp(36px, 3vw, 64px);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: 0.05em;
    text-align: center;
    color: #fff;
    white-space: normal;
    overflow-wrap: anywhere;
    word-break: normal;
  }

  html:not([lang="en"]) :is(
    .jxzn-video__headline-title,
    .jxzn-video__title,
    .jxzn-field__title,
    .jxzn-op__title,
    .jxzn-brain-module__title,
    .jxzn-engine__title,
    .jxzn-investors__title,
    .jxzn-honors__title,
    .jxzn-cta__title,
    .jxzn-about-intro__title,
    .jxzn-about-deploy__title,
    .jxzn-about-team__title,
    .jxzn-solutions-intro__title,
    .jxzn-solutions-video__title,
    .jxzn-solutions-cta__title,
    .jxzn-page--case .jxzn-case-clients h2
  ) {
    font-size: clamp(34px, 2.5vw, 56px);
    font-weight: 700;
    line-height: 1.25;
    white-space: normal;
    overflow-wrap: anywhere;
    word-break: normal;
  }

  @media (max-width: 700px) {
    html:not([lang="en"]) :is(
      .jxzn-video__headline-title,
      .jxzn-video__title,
      .jxzn-field__title,
      .jxzn-op__title,
      .jxzn-brain-module__title,
      .jxzn-engine__title,
      .jxzn-investors__title,
      .jxzn-honors__title,
      .jxzn-cta__title,
      .jxzn-about-intro__title,
      .jxzn-about-deploy__title,
      .jxzn-about-team__title,
      .jxzn-solutions-intro__title,
      .jxzn-solutions-video__title,
      .jxzn-solutions-cta__title,
      .jxzn-page--case .jxzn-case-clients h2,
      .jxzn-page__tech h2,
      .jxzn-tech-field-new__title,
      .jxzn-tech-field__title
    ) {
      font-size: 28px;
    }
  }
}

/* ============================================================
 * 英文 SP 全站补充（仅 max-width: 767px）
 * ============================================================ */
@media (max-width: 767px) {
  html[lang="en"] .jxzn-hero__content {
    padding-top: 16px;
    box-sizing: border-box;
  }

  html[lang="en"] .jxzn-video__subtitle {
    white-space: normal;
    overflow-wrap: anywhere;
    line-height: 1.45;
  }

  html[lang="en"] .jxzn-video__stats-bar .jxzn-video__stats-item {
    font-size: 12px;
    line-height: 1.35;
    white-space: normal;
    overflow-wrap: anywhere;
  }

  html[lang="en"] .jxzn-field__features li strong,
  html[lang="en"] .jxzn-field__features li em {
    overflow-wrap: anywhere;
    word-break: break-word;
  }

  html[lang="en"] .jxzn-field__diagram--sp-orbit .jxzn-field__card strong {
    font-size: clamp(8px, 2.2vw, 10px);
    line-height: 1.05;
    white-space: nowrap !important;
    overflow: visible;
    overflow-wrap: normal;
    word-break: normal;
  }

  html[lang="en"] .jxzn-field__diagram--sp-orbit .jxzn-field__core {
    padding: 0 8%;
  }

  html[lang="en"] .jxzn-field__diagram--sp-orbit .jxzn-field__core strong {
    white-space: normal;
    overflow-wrap: anywhere;
    word-break: break-word;
    font-size: clamp(6px, 1.3vw, 8px);
    line-height: 1.12;
    hyphens: auto;
  }

  html[lang="en"] .jxzn-field__diagram--sp-orbit .jxzn-field__core em {
    white-space: normal;
    overflow-wrap: anywhere;
    word-break: break-word;
    font-size: clamp(5.5px, 1.15vw, 7px);
    line-height: 1.15;
    padding: 2px 5px;
    margin-top: 2px;
    max-width: 100%;
    box-sizing: border-box;
  }

  html[lang="en"] .jxzn-brain-module__points li {
    font-size: clamp(11px, 3vw, 13px);
    line-height: 1.4;
    overflow-wrap: anywhere;
  }

  html[lang="en"] .jxzn-honors__rankings p span {
    font-size: clamp(10px, 2.75vw, 12px);
    line-height: 1.3;
    white-space: normal;
    overflow-wrap: anywhere;
    word-break: break-word;
  }

  html[lang="en"] .jxzn-honors__rankings span::before,
  html[lang="en"] .jxzn-honors__rankings span::after {
    width: 7px;
    height: 16px;
  }

  html[lang="en"] .jxzn-honors__pill {
    white-space: normal;
    line-height: 1.3;
    overflow-wrap: anywhere;
  }

  html[lang="en"] .jxzn-cta__card strong {
    font-size: clamp(13px, 3.6vw, 15px);
    line-height: 1.3;
    overflow-wrap: anywhere;
  }

  html[lang="en"] .jxzn-cta__note {
    font-size: clamp(10px, 2.75vw, 12px);
    line-height: 1.35;
  }

  html[lang="en"] .jxzn-case-feature__tags li {
    white-space: normal;
    line-height: 1.3;
    overflow-wrap: anywhere;
  }

  html[lang="en"] .jxzn-page--case .jxzn-case-card h3 {
    font-size: clamp(13px, 3.6vw, 15px);
    line-height: 1.35;
    overflow-wrap: anywhere;
    word-break: break-word;
  }

  html[lang="en"] .jxzn-page--case .jxzn-case-card p {
    font-size: 12px;
    line-height: 1.45;
    overflow-wrap: anywhere;
  }
}

/* ============================================================
 * 英文 SP 标题统一最终覆盖（文件末尾，覆盖各页/内联旧规则）
 * ============================================================ */
@media (max-width: 767px) {
  html[lang="en"] .jxzn-page__other .jxzn-hero__content,
  html[lang="en"] .jxzn-page--solutions #solutions-hero .jxzn-hero__content {
    align-items: center;
    text-align: center;
  }

  html[lang="en"] .jxzn-page__other .jxzn-hero__title,
  html[lang="en"] .jxzn-page--solutions .jxzn-solutions-hero__title,
  html[lang="en"] .jxzn-disclosure-hero__title,
  html[lang="en"] .jxzn-news-detail-hero__title {
    width: fit-content;
    max-width: calc(100vw - 40px);
    margin: 0 auto;
    font-size: clamp(18px, 4.8vw, 24px) !important;
    font-weight: 700 !important;
    line-height: 1.22 !important;
    letter-spacing: 0.04em;
    text-align: center;
    color: #fff;
    white-space: normal;
    overflow-wrap: anywhere;
    word-break: break-word;
  }

  html[lang="en"] :is(
    .jxzn-video__headline-title,
    .jxzn-video__title,
    .jxzn-field__title,
    .jxzn-op__title,
    .jxzn-brain-module__title,
    .jxzn-engine__title,
    .jxzn-investors__title,
    .jxzn-honors__title,
    .jxzn-cta__title,
    .jxzn-about-intro__title,
    .jxzn-about-deploy__title,
    .jxzn-about-team__title,
    .jxzn-solutions-intro__title,
    .jxzn-solutions-video__title,
    .jxzn-solutions-cta__title,
    .jxzn-page--case .jxzn-case-clients h2,
    .jxzn-page__tech h2,
    .jxzn-tech-field-new__title,
    .jxzn-tech-field__title
  ) {
    font-size: clamp(22px, 6vw, 28px) !important;
    font-weight: 700 !important;
    line-height: 1.25 !important;
    white-space: normal;
    overflow-wrap: anywhere;
    word-break: break-word;
  }
}