/* ============================================================
 * 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 */

  /* 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;
}

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;
}

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 */
.jxzn-screen--hero {
  background: #000;       /* 兜底色，图片/视频加载前显示 */
  color: #fff;
  height: 100vh;
  min-height: 100vh;
}
.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;
}

.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: clamp(14px, 1.25vw, 48px);   /* 24/1920，4K 48 */
  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 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: 1;
  pointer-events: none;
}
.jxzn-op__bg::after {
  /* 顶部渐黑遮罩，让标题更清晰 */
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0.5), transparent 30%, transparent 70%, rgba(0,0,0,0.4));
}

/* 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;
  padding: 7.5vh 0 6.4vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.jxzn-investors__title {
  margin: 0 0 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: nowrap;
}

.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: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: #fff;
  color: #000;
}

.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 {
  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%;
  margin: 0;
  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: nowrap;
}

.jxzn-honors__subtitle {
  position: absolute;
  left: 50%;
  top: 21.1111%;
  width: 54.7396vw;                   /* 1051/1920 */
  margin: 0;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.4583vw;                      /* 28/1920 */
  font-family: "Source Han Sans SC", var(--jxzn-font);
  font-size: clamp(14px, 1.1458vw, 44px);  /* 设计 22 / 4K 44 */
  line-height: 1.4545;                /* 32/22 */
  color: #fff;
  text-align: center;
  white-space: nowrap;
}

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

.jxzn-honors__subtitle span {
  font-weight: 350;
}

.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(/assets/jxzn/img/honors-laurel.png) 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(/assets/jxzn/img/honors-laurel-small.png) 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;
  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: nowrap;
}

.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;
}

.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 360x482 (1920 宽)
 *   - vw 缩放 + max 封顶（2K/2560 上不再膨胀到 480x643）
 *   - 用 aspect-ratio 锁住 360:482 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(60vw, 1240px);
  height: auto;                       /* 跟着卡的 aspect-ratio 自动 */
  gap: clamp(16px, 1.875vw, 40px);
}

.jxzn-cta__card {
  position: relative;
  flex: 0 0 min(18.75vw, 380px);      /* 设计 360，封顶 380（2K 不撑大）*/
  width: min(18.75vw, 380px);
  height: auto;
  aspect-ratio: 360 / 482;            /* 锁住设计原比例 */
  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;
}

/* 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;
}

/* 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.png"); }
.jxzn-cta__card--demo     { --back-bg: url("../img/cta-card2-back-bg.png"); }
.jxzn-cta__card--expert   { --back-bg: url("../img/cta-card3-back-bg.png"); }

/* 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;
}

@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%);
}

/* SVG icon：卡片中上部居中 */
.jxzn-cta__face-icon {
  position: absolute;
  left: 50%;
  top: 36.6%;                         /* 设计 icon 中心 = 186/508 */
  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%;                         /* 设计 标题中心 = 402/508 */
  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(13px, 1.184vw, 45px);  /* 设计 22.7 / 4K 45 */
  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);
}

/* (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: "Source Han Sans SC", var(--jxzn-font);
  font-size: clamp(12px, 1.0417vw, 40px);
  font-weight: 400;
  line-height: 1.6;
  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: 32px;
    white-space: normal;
  }

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

  .jxzn-cta__card {
    flex-basis: 360px;
    width: min(360px, 100%);
    max-width: 360px;
    height: 482px;
  }

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

.jxzn-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 90px;
  padding: 21px 192px;
  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);
}

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

.jxzn-header__logo {
  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: 60px;
  flex-shrink: 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__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: 40px; }
  .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: 24px; }
  .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;
}

.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-size: clamp(14px, 0.8333vw, 32px);  /* 设计 16 / 4K 32 */
  line-height: 1.6;
  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 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-size: clamp(14px, 0.8333vw, 32px);  /* 设计 16 / 4K 32 */
  line-height: 1.8;
  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 {
  /* 绝对定位：贴 header 右内边距，logo + nav 保持 flex center 居中布局不受影响 */
  position: absolute;
  right: 192px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  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; right: 60px; }
}
@media (max-width: 1024px) {
  .jxzn-lang { font-size: 14px; gap: 6px; right: 24px; }
}

/* ============================================================
 * 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;
}

/* 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;
}

/* 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;
}