/* ============================================================
   中科聚变 / FUSION THz — 官网视觉系统 v2 「干涉 · Interference」
   安徽中科聚变太赫兹科技股份有限公司

   设计概念：公司以太赫兹干涉测量等离子体 —— 整套视觉以
   "干涉条纹 / 仪器刻度 / 测量标注" 为母题：
   · 深墨蓝仪器底色 + 太赫兹青光束 + 等离子体橙点缀
   · 衬线大标题（学术权威）× 等宽字数据刻度（仪器精密）
   · 卡片用十字准星角标与发丝线，替代圆角投影
   ============================================================ */
/* 自托管免费商用字体（替换专有的 Century Gothic / 微软雅黑）：
   拉丁=Jost（几何无衬线，接近 Century Gothic 的 Futura 风格，SIL OFL）；
   中文=思源黑体 / Noto Sans SC（简体常用字子集，SIL OFL）。
   均本地托管，不依赖 Google 字体 CDN（国内可稳定加载）。 */
@font-face{font-family:'Jost';font-style:normal;font-weight:400;font-display:swap;src:url('../fonts/jost-latin-400.woff2') format('woff2')}
@font-face{font-family:'Jost';font-style:normal;font-weight:500;font-display:swap;src:url('../fonts/jost-latin-500.woff2') format('woff2')}
@font-face{font-family:'Jost';font-style:normal;font-weight:600;font-display:swap;src:url('../fonts/jost-latin-600.woff2') format('woff2')}
@font-face{font-family:'Jost';font-style:normal;font-weight:700;font-display:swap;src:url('../fonts/jost-latin-700.woff2') format('woff2')}
@font-face{font-family:'Jost';font-style:normal;font-weight:800;font-display:swap;src:url('../fonts/jost-latin-800.woff2') format('woff2')}
@font-face{font-family:'Noto Sans SC';font-style:normal;font-weight:400;font-display:swap;src:url('../fonts/notosanssc-sc-400.woff2') format('woff2')}
@font-face{font-family:'Noto Sans SC';font-style:normal;font-weight:500;font-display:swap;src:url('../fonts/notosanssc-sc-500.woff2') format('woff2')}
@font-face{font-family:'Noto Sans SC';font-style:normal;font-weight:700;font-display:swap;src:url('../fonts/notosanssc-sc-700.woff2') format('woff2')}
@font-face{font-family:'Noto Sans SC';font-style:normal;font-weight:900;font-display:swap;src:url('../fonts/notosanssc-sc-900.woff2') format('woff2')}

:root{
  /* 色板 —— 严格遵循公司 VI（v1 交付说明）：
     --navy #0B2E59 主深蓝 / --teal #0F7A9A 太赫兹青(VI主色) / --accent #1FB6D6 高光青 */
  --ink:#081F3D;            /* 深底（由主深蓝加深，v1 --bg-dark） */
  --ink-2:#0B2E59;          /* 主深蓝 */
  --navy:#0B2E59;           /* 标题深蓝（亮底用） */
  --navy-2:#123E73;         /* 次深蓝（导航渐变，v1） */
  --beam:#1FB6D6;           /* 高光青（暗底高光） */
  --beam-deep:#0F7A9A;      /* 太赫兹青 VI 主色（亮底文字级） */
  --plasma:#1FB6D6;         /* 点缀色：并入高光青（VI 内无暖色） */
  --paper:#F4F7FB;          /* 浅底块（v1 --bg-soft） */
  --white:#FFFFFF;
  --body:#2B3A48;           /* 正文 */
  --muted:#5C6B7E;          /* 次级灰（v1） */
  --line:#DDE5EE;           /* 浅底发丝线 */
  --line-cold:#E3E9F0;      /* 白上发丝线（v1 --line） */
  --line-dark:rgba(31,182,214,.18);  /* 深底发丝线 */

  /* 深色表面色阶 —— 全部锁定品牌藏蓝同一色相(≈213°)，只改明度，保证"一套" */
  --nv-950:#05172E;         /* 最深：装置舞台 / 视频首屏底 / 数据带 */
  --nv-900:#081F3D;         /* 标准深底（=--ink）：荣誉等 */
  --nv-800:#0B2E59;         /* 抬一档深底（=--navy）：合作伙伴 */
  /* 深底文字三级 —— 同样收敛为固定三档，替代散落的二十余种蓝灰 */
  --on-d:#C6D5E1;           /* 深底正文 */
  --on-d-soft:#94A8BA;      /* 深底次级（说明/标注） */
  --on-d-faint:#6E8497;     /* 深底最弱（计数/单位） */

  /* 字体（默认，均免费商用/自托管）：拉丁=Jost（似 Century Gothic），中文=思源黑体/Noto Sans SC。
     字体栈把拉丁字体放前面、中文字体随后，浏览器逐字符选字 → 英文走 Jost、中文走思源黑体；
     末尾保留 PingFang / 苹方等系统字体作降级兜底。 */
  --serif:"Jost","Noto Sans SC","思源黑体","Source Han Sans SC","PingFang SC","Hiragino Sans GB",sans-serif;
  --sans:"Jost","Noto Sans SC","思源黑体","Source Han Sans SC","PingFang SC","Hiragino Sans GB",sans-serif;
  --mono:"Jost","Noto Sans SC","思源黑体","Source Han Sans SC","PingFang SC","Hiragino Sans GB",sans-serif;

  --maxw:1240px;
  --nav-h:88px;             /* 导航栏高度（移动端会被媒体查询调小） */
  --radius:3px;

  /* 兼容旧模板引用 */
  --teal:var(--beam-deep);
  --accent:var(--beam);
  --bg-soft:var(--paper);
  --bg-dark:var(--ink);
  --shadow:0 24px 60px rgba(8,31,61,.12);
  --shadow-sm:0 10px 30px rgba(8,31,61,.08);
}

/* 备用：?font=serif 切回原「Noto 衬线 + IBM Plex 等宽」设计版（仅供预览对比） */
html.font-serif{
  --serif:"Noto Serif SC","Source Han Serif SC","STZhongsong","SimSun",serif;
  --sans:"Noto Sans SC","Microsoft YaHei","PingFang SC","Hiragino Sans GB",sans-serif;
  --mono:"IBM Plex Mono","JetBrains Mono","Cascadia Code",Consolas,monospace;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}

/* ── 图片灯箱（点击放大）：内容图鼠标变放大镜，点击弹出大图 ── */
.asset-frame,.pimg,.card-media,.prose-visual,.contact-visual{cursor:zoom-in}
.lightbox{position:fixed;inset:0;z-index:9999;display:none;align-items:center;justify-content:center;padding:clamp(20px,4vw,64px)}
.lightbox.open{display:flex}
.lightbox .lb-backdrop{position:absolute;inset:0;background:rgba(6,18,36,.92);backdrop-filter:blur(3px);cursor:zoom-out}
.lightbox .lb-fig{position:relative;z-index:1;margin:0;max-width:92vw;max-height:90vh;display:flex;flex-direction:column;align-items:center;gap:14px;animation:lbIn .28s ease}
.lightbox .lb-fig img{max-width:92vw;max-height:82vh;width:auto;height:auto;object-fit:contain;border-radius:6px;background:#fff;box-shadow:0 30px 90px rgba(0,0,0,.55);cursor:zoom-out}
.lightbox figcaption{color:#dce8f2;font-size:15px;letter-spacing:.4px;line-height:1.7;text-align:center;max-width:70ch}
.lightbox .lb-close{position:absolute;top:max(16px,2.4vh);right:max(16px,2.4vw);z-index:2;width:46px;height:46px;border-radius:50%;border:1px solid rgba(255,255,255,.32);background:rgba(255,255,255,.08);color:#fff;font-size:26px;line-height:1;cursor:pointer;transition:.2s}
.lightbox .lb-close:hover{background:rgba(255,255,255,.18);transform:rotate(90deg)}
@keyframes lbIn{from{opacity:0;transform:scale(.96)}to{opacity:1;transform:none}}
body{
  font-family:var(--sans);
  color:var(--body);
  background:var(--white);
  line-height:1.8;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
::selection{background:var(--beam);color:var(--ink)}
.container{max-width:var(--maxw);margin:0 auto;padding:0 28px}

.asset-frame{
  position:relative;
  overflow:hidden;
  background:var(--paper);
  border:1px solid var(--line);
}
.asset-frame img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.asset-frame.contain img{object-fit:contain;padding:14px;background:#fff}
.asset-frame.dark{background:var(--ink);border-color:var(--line-dark)}
.asset-frame.dark img{opacity:.88}
.asset-frame::after{
  content:"";position:absolute;inset:0;pointer-events:auto;z-index:2;
  background:linear-gradient(180deg,rgba(8,31,61,0),rgba(8,31,61,.08));
}
/* 同样抑制 fillPhoto 图片（首页 FIG.01 蓝图 / 团队头像等）右上角的"视觉搜索"按钮 */
.has-image{position:relative}
.has-image::after{content:"";position:absolute;inset:0;z-index:2}
.card-media{height:180px;margin:-34px -30px 24px;border-width:0 0 1px}
.prose-visual{height:360px;margin:34px auto;border-radius:var(--radius)}
.asset-gallery{margin-top:56px}
.asset-gallery-head{
  display:flex;justify-content:space-between;align-items:flex-end;gap:24px;
  margin-bottom:24px;border-top:1px solid var(--line);padding-top:28px;
}
.asset-gallery-head h3{color:var(--navy);font-family:var(--serif);font-size:26px;line-height:1.35}
.asset-gallery-head p{max-width:520px;color:var(--muted);font-size:14px;line-height:1.9}
.asset-gallery-grid{display:flex;flex-wrap:wrap;justify-content:center;gap:18px}
.asset-gallery-grid>*{flex:0 0 calc((100% - 54px)/4);max-width:calc((100% - 54px)/4)}
.asset-tile{
  background:#fff;border:1px solid var(--line);overflow:hidden;min-height:260px;
  display:flex;flex-direction:column;transition:.24s;
}
.asset-tile:hover{transform:translateY(-4px);border-color:var(--beam-deep);box-shadow:var(--shadow-sm)}
.asset-tile .asset-frame{height:166px;border-width:0 0 1px}
.asset-tile b{display:block;color:var(--navy);font-family:var(--serif);font-size:17px;padding:18px 18px 5px}
.asset-tile span{display:block;color:var(--muted);font-size:14px;line-height:1.75;padding:0 18px 18px}
.contact-visual{height:360px;margin-top:50px}

/* ---------- 占位图（供应商替换） ---------- */
.placeholder{
  background:
    linear-gradient(rgba(15,122,154,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(15,122,154,.045) 1px,transparent 1px),
    var(--paper);
  background-size:12px 12px;
  display:flex;align-items:center;justify-content:center;
  color:#9aa7b8;font-size:14px;letter-spacing:2px;font-family:var(--mono);
  border:1px dashed #C4D2E2;border-radius:var(--radius);text-align:center;padding:8px;
}

/* 联系页：总部位置 + 嵌入地图 */
.loc-block{margin-top:54px}
.loc-head{margin-bottom:16px}
.loc-head h3{color:var(--navy);font-size:22px;margin:6px 0 6px;font-family:var(--serif);font-weight:700}
.loc-head p{color:var(--muted);font-size:14.5px}
.loc-map{width:100%;height:380px;border:1px solid var(--line);border-radius:12px;display:block}

/* 装置现场影像：可点击卡片 + 详情灯箱 */
.device-carousel{position:relative;border-radius:8px;overflow:hidden;background:#071625;box-shadow:var(--shadow);border:1px solid rgba(8,22,44,.12)}
.dc-viewport{overflow:hidden}
.dc-track{display:flex;transition:transform .45s ease}
.dc-slide{position:relative;display:block;flex:0 0 100%;aspect-ratio:16/9;border:0;padding:0;background:#071625;cursor:pointer;text-align:left;font:inherit;overflow:hidden}
.dc-slide img{width:100%;height:100%;object-fit:cover;display:block}
.dc-slide::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,18,31,.04) 42%,rgba(5,18,31,.82) 100%)}
.dc-caption{position:absolute;left:28px;right:28px;bottom:28px;z-index:2;display:flex;flex-direction:column;gap:7px;color:#fff;text-shadow:0 2px 14px rgba(0,0,0,.55)}
.dc-caption b{font-family:var(--serif);font-size:clamp(22px,3vw,38px);line-height:1.2}
.dc-caption span{font-family:var(--mono);font-size:14px;letter-spacing:1px;color:#d8e6f0}
.dc-nav{position:absolute;top:50%;z-index:3;transform:translateY(-50%);width:42px;height:42px;border:1px solid rgba(255,255,255,.45);border-radius:50%;background:rgba(8,22,44,.52);color:#fff;font-size:34px;line-height:36px;cursor:pointer;display:flex;align-items:center;justify-content:center}
.dc-nav:hover{background:rgba(31,182,214,.82);border-color:rgba(255,255,255,.88)}
.dc-prev{left:18px}
.dc-next{right:18px}
.dc-dots{position:absolute;left:0;right:0;bottom:14px;z-index:3;display:flex;justify-content:center;gap:9px;pointer-events:none}
.dc-dots button{width:28px;height:3px;border:0;border-radius:99px;background:rgba(255,255,255,.36);padding:0;cursor:pointer;pointer-events:auto}
.dc-dots button.on{background:var(--beam)}
.dev-gallery{display:flex;flex-wrap:wrap;justify-content:center;gap:18px}
.dev-gallery>*{flex:0 0 calc((100% - 54px)/4);max-width:calc((100% - 54px)/4)}
.dev-tile{text-align:left;background:#fff;border:1px solid var(--line);border-radius:8px;overflow:hidden;cursor:pointer;padding:0;font:inherit;transition:.25s;display:flex;flex-direction:column}
.dev-tile:hover{box-shadow:var(--shadow-sm);transform:translateY(-4px);border-color:var(--beam-deep)}
.dt-img{height:150px;overflow:hidden;position:relative;background:#0a1726;display:block}
.dt-img img{width:100%;height:100%;object-fit:cover}
.dt-img::after{content:"";position:absolute;inset:0;z-index:2}
.dt-body{padding:14px 16px 16px;display:flex;flex-direction:column;gap:4px}
.dt-body b{color:var(--navy);font-family:var(--serif);font-size:15.5px}
.dt-cli{color:var(--muted);font-size:14px}
.dt-more{color:var(--beam-deep);font-family:var(--mono);font-size:14px;letter-spacing:.5px;margin-top:6px;font-style:normal}
@media(max-width:900px){.dev-gallery>*{flex-basis:calc((100% - 18px)/2);max-width:calc((100% - 18px)/2)}}
@media(max-width:520px){
  .dev-gallery>*{flex-basis:100%;max-width:100%}
  .dc-caption{left:18px;right:18px;bottom:26px}
  .dc-caption span{font-size:12px;line-height:1.45}
  .dc-nav{width:34px;height:34px;font-size:26px;line-height:30px}
  .dc-prev{left:10px}
  .dc-next{right:10px}
  .dc-dots{bottom:10px}
  .dc-dots button{width:18px}
}

.dev-modal{position:fixed;inset:0;z-index:9999;display:flex;align-items:center;justify-content:center;padding:20px}
.dev-modal[hidden]{display:none}
.dm-backdrop{position:absolute;inset:0;background:rgba(8,22,44,.72)}
.dm-box{position:relative;z-index:1;background:#fff;border-radius:14px;max-width:860px;width:100%;max-height:92vh;overflow:auto;box-shadow:0 30px 80px rgba(8,22,44,.5)}
.dm-close{position:absolute;top:10px;right:14px;background:rgba(0,0,0,.4);color:#fff;border:0;width:34px;height:34px;border-radius:50%;font-size:22px;line-height:1;cursor:pointer;z-index:3}
.dm-close:hover{background:rgba(0,0,0,.65)}
.dm-stage{height:420px;background:#0a1726;display:flex;align-items:center;justify-content:center}
.dm-stage img{max-width:100%;max-height:420px;object-fit:contain}
.dm-thumbs{display:flex;gap:10px;padding:12px 18px 0;flex-wrap:wrap}
.dm-th{width:84px;height:58px;border:2px solid transparent;border-radius:6px;overflow:hidden;cursor:pointer;padding:0;background:#f2f6fa}
.dm-th.on{border-color:var(--beam-deep)}
.dm-th img{width:100%;height:100%;object-fit:cover}
.dm-info{padding:14px 24px 26px}
.dm-info h3{color:var(--navy);font-family:var(--serif);font-size:22px;margin-bottom:4px}
.dm-info .dm-client{color:var(--beam-deep);font-family:var(--mono);font-size:14px;letter-spacing:1px;margin-bottom:12px}
.dm-info p{color:var(--body);font-size:14.5px;line-height:1.9}

/* =================== 顶部信息栏 =================== */
.topbar{background:var(--navy);color:#8FA5B8;font-size:14px;border-bottom:1px solid var(--line-dark)}
.topbar .container{display:flex;justify-content:flex-end;gap:0;height:36px;align-items:stretch}
.topbar a{
  display:flex;align-items:center;padding:0 18px;opacity:.8;transition:.2s;
  border-left:1px solid var(--line-dark);font-family:var(--mono);letter-spacing:1px;
}
.topbar a:last-child{border-right:1px solid var(--line-dark)}
.topbar a:hover{opacity:1;color:var(--beam)}

/* =================== 主导航 =================== */
.nav{
  position:sticky;top:0;z-index:100;
  background:linear-gradient(180deg,var(--navy) 0%,var(--navy-2) 100%);
  border-bottom:1px solid var(--line-dark);
}
.nav::after{ /* 底部光束线 */
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,182,214,.7) 30%,rgba(31,182,214,.7) 70%,transparent);
  opacity:.55;
}
/* 参考 startorus：导航是满宽 bar，内容左右各留 ~40px、用 space-between 把 logo 顶到最左、菜单顶到最右。
   不跟随居中内容容器；`.home .nav .container` 提高优先级以盖过首页 .home .container{width:88%} 的劫持 */
.home .nav .container,
.nav .container{display:flex;align-items:center;justify-content:space-between;height:var(--nav-h);gap:28px;
  max-width:none;width:auto;margin:0;padding:0 clamp(20px,3vw,40px)}
.brand{display:flex;align-items:center;gap:14px;flex-shrink:0}
.brand .logo{
  width:48px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
}
.brand .logo img{width:48px;height:auto;display:block;filter:drop-shadow(0 2px 8px rgba(31,182,214,.35))}
.brand .word{display:flex;flex-direction:column;line-height:1.15}
.brand .word .cn{color:#fff;font-size:21px;font-weight:800;letter-spacing:2px;font-family:var(--serif)}
.brand .word .en{color:var(--beam);font-size:14px;font-weight:600;letter-spacing:1.5px;font-family:var(--mono)}
.menu{margin-left:auto;display:flex;align-items:center;gap:8px;list-style:none}
.menu>li{position:relative}
.menu>li>a{
  color:#C4D4E0;padding:33px 18px;display:block;font-size:18px;font-weight:600;
  transition:.2s;white-space:nowrap;position:relative;letter-spacing:.5px;
}
/* 对齐 startorus：用「当前项=高亮色文字」代替下划线（下划线已停用） */
.menu>li>a::after{content:none}
.menu>li>a:hover{color:#fff}
.menu>li.active>a{color:var(--beam)}
/* 含下拉的菜单项：链接右侧加一个小三角，hover 时翻转向上表示展开 */
.menu>li:has(.submenu)>a,.menu>li:has(.megamenu)>a{padding-right:28px}
.menu>li:has(.submenu)>a::before,.menu>li:has(.megamenu)>a::before{
  content:"";position:absolute;right:12px;top:50%;width:0;height:0;
  border-left:4.5px solid transparent;border-right:4.5px solid transparent;
  border-top:6px solid #fff;opacity:.92;
  transform:translateY(-50%);transition:transform .22s ease,opacity .22s;
}
.menu>li:has(.submenu):hover>a::before,.menu>li:has(.megamenu):hover>a::before{transform:translateY(-50%) rotate(180deg);opacity:1}
/* 全宽 mega 下拉（产品与客户）：竖式——左竖列分类(按 产品/客户与应用 分组) · 中悬停切换条目 · 右水印 */
.megamenu{
  position:fixed;left:0;right:0;top:var(--nav-h);width:100vw;z-index:90;display:block;
  /* 与站内深色板块一套：品牌藏蓝渐变 + 斜纹底纹 + 顶部一抹青光氛围（不再是纯平暗块） */
  background:
    repeating-linear-gradient(135deg,rgba(31,182,214,.022) 0 1px,transparent 1px 13px),
    radial-gradient(120% 120% at 84% -10%,rgba(31,182,214,.07),transparent 58%),
    linear-gradient(180deg,rgba(9,32,62,.986) 0%,rgba(5,19,38,.986) 100%);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-top:1px solid rgba(31,182,214,.32);box-shadow:0 36px 64px rgba(0,0,0,.5);
  opacity:0;visibility:hidden;transform:translateY(6px);transition:.25s;
}
.megamenu::before{content:"";position:absolute;left:0;right:0;top:-16px;height:16px} /* 桥接导航与面板，hover 不中断 */
.menu>li:hover .megamenu{opacity:1;visibility:visible;transform:none}
.mm-wrap{display:grid;grid-template-columns:minmax(200px,232px) minmax(0,1fr) minmax(48px,92px);max-width:1720px;margin:0 auto;min-height:300px}
/* 左：仅 2 个大类(2级)，悬停切换右侧——高度固定，不随小类增多变高 */
.mm-cats{list-style:none;padding:42px 0;border-right:1px solid rgba(255,255,255,.08)}
.mm-cats li{position:relative;display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:0 clamp(20px,1.8vw,38px);height:64px;cursor:pointer;transition:background .18s}
.mm-cats li a{font-size:19px;font-weight:600;color:var(--on-d);transition:.18s;white-space:nowrap}
.mm-cats li span{color:#5e7888;font-size:18px;transition:.18s}
.mm-cats li.on{background:linear-gradient(90deg,rgba(31,182,214,.12),transparent 82%)}
.mm-cats li.on::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:3px;height:28px;background:var(--beam);box-shadow:0 0 12px rgba(31,182,214,.55)}
.mm-cats li.on a,.mm-cats li:hover a{color:var(--beam)}
.mm-cats li.on span,.mm-cats li:hover span{color:var(--beam);transform:translateX(3px)}
/* 右：当前大类的小类(3级)横向分栏 + 条目(4级)，高度由最高一栏决定 */
.mm-panels{padding:42px clamp(22px,2.4vw,46px)}
.mm-panel{display:none}
/* 固定栏数：产品 3 栏、客户与应用 5 栏，永不换栏；个别长条目在栏内换到第二行即可 */
.mm-panel.on{display:grid;gap:clamp(14px,1.4vw,24px) clamp(14px,1.5vw,28px);align-items:start;animation:mmfade .3s ease}
.mm-panel[data-mm="p"].on{grid-template-columns:repeat(3,minmax(0,1fr))}
.mm-panel[data-mm="c"].on{grid-template-columns:repeat(5,minmax(0,1fr))}
@keyframes mmfade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.mm-col{min-width:0;display:flex;flex-direction:column}
.mm-h{font-size:16px;font-weight:700;color:#fff;padding-bottom:12px;margin-bottom:4px;border-bottom:1px solid rgba(31,182,214,.25);transition:color .18s;white-space:nowrap}
.mm-h:hover{color:var(--beam)}
.mm-col a:not(.mm-h){position:relative;font-size:14px;color:var(--on-d);padding:9px 0 9px 14px;line-height:1.4;transition:.18s}
.mm-col a:not(.mm-h)::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:6px;height:1px;background:var(--beam);opacity:.55;transition:.18s}
.mm-col a:not(.mm-h):hover{color:#fff;padding-left:20px}
.mm-col a:not(.mm-h):hover::before{width:12px;opacity:1}
/* 右侧水印 */
.mm-aside{display:flex;align-items:center;justify-content:flex-end;padding-right:clamp(24px,3vw,64px);
  font-family:var(--mono);font-weight:700;font-size:clamp(50px,6vw,110px);letter-spacing:4px;
  color:transparent;-webkit-text-stroke:1px rgba(31,182,214,.12);user-select:none}
/* 下钻返回条：仅移动端全屏菜单里显示，桌面 mega 下拉里隐藏 */
.mm-back{display:none}
/* 移动端/竖屏平板(≤980)：抽屉里把两类的“组标题(3级)”平铺成可点列表，隐藏 4 级条目与水印，保持简洁不溢出 */
@media(max-width:980px){
  .megamenu{position:static;width:auto;top:auto;box-shadow:none;backdrop-filter:none;background:rgba(6,17,30,.45);border-top:0;opacity:1;visibility:visible;transform:none}
  .megamenu::before{display:none}
  .mm-wrap{display:block;max-width:none;margin:0;min-height:0}
  .mm-cats,.mm-aside{display:none}
  .mm-panels{display:block;padding:4px 0}
  .mm-panel,.mm-panel.on{display:block;animation:none;gap:0}
  .mm-col{min-width:0;display:block}
  .mm-h{white-space:normal;font-size:19px;font-weight:700;color:#fff;
    padding:15px 26px;margin:0;border-bottom:1px solid rgba(255,255,255,.06)}
  .mm-h:hover{color:var(--beam)}
  .mm-col a:not(.mm-h){display:none}
}
.submenu{
  position:absolute;top:100%;left:0;min-width:200px;background:var(--navy);
  border:1px solid var(--line-dark);border-top:2px solid var(--beam);
  padding:8px 0;opacity:0;visibility:hidden;transform:translateY(10px);transition:.22s;
}
.menu>li:hover .submenu{opacity:1;visibility:visible;transform:translateY(0)}
.submenu a{display:block;padding:10px 20px;font-size:14px;color:#A9BCCB;transition:.15s}
.submenu a:hover{background:rgba(31,182,214,.1);color:#fff;padding-left:26px}
.menu>li.lang{margin-left:14px}
.menu>li.lang>a{
  font-family:var(--mono);font-size:14px;color:var(--beam);letter-spacing:2px;
  border:1px solid var(--line-dark);padding:7px 14px;
}
.menu>li.lang>a::after{display:none}
.menu>li.lang>a:hover{border-color:var(--beam)}
.nav-toggle{display:none;margin-left:auto;background:none;border:1px solid var(--line-dark);color:#fff;font-size:22px;cursor:pointer;padding:4px 12px}

/* ============ 移动端「多级下钻」导航抽屉（JS 生成，挂在 body 上，避开层级/包含块问题）============ */
.mnav{position:fixed;left:0;right:0;top:var(--nav-h);bottom:0;z-index:1400;background:#0B2E59;display:none;overflow:hidden}
body.nav-open .mnav{display:block}
/* 每一级都是一张铺满的面板；下钻的面板默认滑出右侧、进入时滑入覆盖上一级 */
.mnav-panel{position:absolute;inset:0;overflow-y:auto;-webkit-overflow-scrolling:touch;background:#0B2E59;
  padding:6px 0 48px;transform:translateX(100%);transition:transform .28s ease}
.mnav-panel.mnav-base{transform:none}      /* 一级列表常驻底层 */
.mnav-panel.in{transform:none}
.mnav-back{display:flex;align-items:center;gap:6px;width:100%;background:none;border:0;
  color:var(--beam);font-size:16px;font-weight:600;letter-spacing:.5px;padding:14px 22px;cursor:pointer;text-align:left}
.mnav-back .i{font-size:24px;line-height:1;margin-top:-2px}
/* 当前分类名：放在开口处，靠加粗+纯白突出（字号不放大，不加箭头以免误导可下钻） */
.mnav-title{display:block;color:#fff;font-size:18px;font-weight:800;letter-spacing:.5px;
  padding:15px 24px;text-decoration:none;
  border-bottom:1px solid rgba(255,255,255,.1);margin-bottom:2px}
a.mnav-title:active{color:var(--beam)}
.mnav-row{display:flex;align-items:center;justify-content:space-between;gap:12px;width:100%;
  color:#fff;font-size:18px;font-weight:600;line-height:1.35;padding:15px 24px;text-align:left;
  text-decoration:none;cursor:pointer;font-family:inherit;
  background:none;border:0;border-bottom:1px solid rgba(255,255,255,.07)}
.mnav-row .chev{flex:0 0 auto;color:rgba(255,255,255,.45);font-size:20px;font-weight:400}
.mnav-row:active{background:rgba(255,255,255,.06)}
@media(min-width:981px){ body.nav-open .mnav{display:none} }   /* 桌面永不显示 */

/* =================== 区块通用 =================== */
.section{padding:96px 0;position:relative}
.section.soft{background:var(--paper)}
.section.soft::before{ /* 纸面坐标网格 */
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background:
    linear-gradient(rgba(14,42,71,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(14,42,71,.035) 1px,transparent 1px);
  background-size:56px 56px;
}
.section.soft>.container{position:relative}
.section.dark{background:linear-gradient(165deg,var(--ink) 30%,var(--ink-2));color:#C9D7E2}
.sec-head{text-align:center;margin-bottom:60px}
.sec-head .kicker{
  color:var(--beam-deep);font-size:14px;font-weight:600;letter-spacing:5px;text-transform:uppercase;
  display:inline-flex;align-items:center;gap:14px;margin-bottom:18px;font-family:var(--mono);
}
.sec-head .kicker::before,.sec-head .kicker::after{
  content:"";width:34px;height:1px;background:currentColor;opacity:.5;
}
.sec-head h2{
  font-size:38px;font-weight:800;color:var(--navy);letter-spacing:2px;
  font-family:var(--serif);line-height:1.3;
}
.section.dark .sec-head h2{color:#fff}
.section.dark .sec-head .kicker{color:var(--beam)}
.sec-head .bar{
  width:8px;height:8px;margin:20px auto 0;background:none;border-radius:0;
  border:1px solid var(--plasma);transform:rotate(45deg);position:relative;
}
.sec-head .bar::before{content:"";position:absolute;inset:2px;background:var(--plasma)}
.sec-head p{color:var(--muted);margin-top:22px;max-width:740px;margin-left:auto;margin-right:auto;font-size:15.5px}
.section.dark .sec-head p{color:#8FA5B8}

/* =================== HERO 干涉视场 =================== */
.hero{
  position:relative;min-height:680px;display:flex;align-items:center;
  background:var(--ink);overflow:hidden;color:#fff;
  border-bottom:1px solid var(--line-dark);
}
/* 双源干涉条纹（莫尔纹） */
.hero .grid-overlay{position:absolute;inset:0}
.hero .grid-overlay::before,.hero .grid-overlay::after{
  content:"";position:absolute;inset:-40%;
  background:repeating-radial-gradient(circle at 78% 38%,
    transparent 0 54px,rgba(31,182,214,.07) 54px 56px);
  animation:fringe-a 26s linear infinite;
}
.hero .grid-overlay::after{
  background:repeating-radial-gradient(circle at 72% 46%,
    transparent 0 47px,rgba(31,182,214,.06) 47px 49px);
  animation:fringe-b 34s linear infinite;
}
@keyframes fringe-a{from{transform:scale(1)}50%{transform:scale(1.12)}to{transform:scale(1)}}
@keyframes fringe-b{from{transform:scale(1.1)}50%{transform:scale(1)}to{transform:scale(1.1)}}
/* 等离子体辉光 */
.hero .glow{
  position:absolute;width:760px;height:760px;border-radius:50%;right:-180px;top:-200px;
  background:
    radial-gradient(circle,rgba(31,182,214,.10),transparent 58%),
    radial-gradient(circle,rgba(31,182,214,.22),transparent 64%);
  filter:blur(10px);
}
/* 扫描线 */
.hero::after{
  content:"";position:absolute;top:0;bottom:0;width:1px;left:0;
  background:linear-gradient(180deg,transparent,rgba(31,182,214,.85),transparent);
  animation:hscan 4.5s ease-in-out .8s 1 forwards;opacity:0;pointer-events:none;
}
@keyframes hscan{0%{left:4%;opacity:0}12%{opacity:.6}88%{opacity:.6}100%{left:96%;opacity:0}}
.hero .container{position:relative;z-index:2;padding-top:60px;padding-bottom:80px}
.hero .eyebrow{
  display:inline-flex;align-items:center;gap:12px;
  color:var(--beam);padding:8px 0;font-size:14px;letter-spacing:4px;margin-bottom:30px;
  font-family:var(--mono);border:0;background:none;border-radius:0;
}
.hero .eyebrow::before{content:"●";font-size:8px;color:var(--plasma);animation:blink 2.4s infinite}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.25}}
.hero h1{
  font-size:58px;line-height:1.28;font-weight:900;max-width:900px;letter-spacing:2px;
  font-family:var(--serif);
}
.hero h1 .hl{
  color:var(--beam);position:relative;white-space:nowrap;
  text-shadow:0 0 36px rgba(31,182,214,.45);
}
.hero .sub{font-size:17.5px;color:#9FB4C6;margin-top:28px;max-width:660px;line-height:2}
.hero .cta{margin-top:44px;display:flex;gap:18px;flex-wrap:wrap}

/* HERO 底部仪表读数条 */
.hero-meta{
  position:absolute;left:0;right:0;bottom:0;z-index:3;
  border-top:1px solid var(--line-dark);background:rgba(8,31,61,.6);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
}
.hero-meta .container{display:flex;gap:0;padding-top:0;padding-bottom:0;flex-wrap:wrap}
.hero-meta span{
  font-family:var(--mono);font-size:14px;letter-spacing:2px;color:#6E8499;
  padding:13px 26px 13px 0;margin-right:26px;border-right:1px solid var(--line-dark);
}
.hero-meta b{color:var(--beam);font-weight:600}

/* =================== 按钮 =================== */
.btn{
  display:inline-flex;align-items:center;gap:10px;padding:15px 34px;border-radius:0;
  font-weight:700;font-size:15px;transition:.22s;cursor:pointer;border:0;
  letter-spacing:1px;position:relative;
}
.btn-primary{background:var(--beam);color:var(--ink)}
.btn-primary:hover{background:#3CC8E2;box-shadow:0 0 0 1px var(--beam),0 14px 36px rgba(31,182,214,.3);transform:translateY(-2px)}
.btn-ghost{
  background:transparent;color:#fff;border:1px solid rgba(255,255,255,.35);
}
.btn-ghost::before,.btn-ghost::after{ /* 准星角标 */
  content:"";position:absolute;width:7px;height:7px;transition:.22s;
}
.btn-ghost::before{top:-1px;left:-1px;border-top:2px solid var(--beam);border-left:2px solid var(--beam)}
.btn-ghost::after{bottom:-1px;right:-1px;border-bottom:2px solid var(--beam);border-right:2px solid var(--beam)}
.btn-ghost:hover{background:rgba(31,182,214,.1);border-color:var(--beam);color:var(--beam)}

/* =================== 数据条 =================== */
.stats{background:var(--ink);color:#fff;border-bottom:1px solid var(--line-dark)}
.stats .container{display:grid;grid-template-columns:repeat(4,1fr)}
.stat{padding:46px 24px 40px;text-align:left;border-right:1px solid var(--line-dark);position:relative}
.stat:first-child{border-left:1px solid var(--line-dark)}
.stat::before{ /* 刻度短线 */
  content:"";position:absolute;top:0;left:24px;width:22px;height:3px;background:var(--plasma);
}
.stat .num{
  font-size:52px;font-weight:600;color:#fff;line-height:1.05;font-family:var(--mono);
  letter-spacing:-1px;
}
.stat .num small{font-size:19px;color:var(--beam);font-family:var(--sans);font-weight:700;margin-left:4px;letter-spacing:2px}
.stat .lbl{color:#7E94A8;margin-top:14px;font-size:14px;letter-spacing:1.5px}

/* =================== 卡片 =================== */
/* 弹性平铺：每张卡片固定宽度，整行填满则铺满、未填满则整行居中（消除落单卡片靠左留白） */
.grid{display:flex;flex-wrap:wrap;justify-content:center;gap:26px}
.grid-2>*{flex:0 0 calc((100% - 26px)/2);max-width:calc((100% - 26px)/2)}
.grid-3>*{flex:0 0 calc((100% - 52px)/3);max-width:calc((100% - 52px)/3)}
.grid-4>*{flex:0 0 calc((100% - 78px)/4);max-width:calc((100% - 78px)/4)}
.card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:34px 30px;transition:.28s;position:relative;overflow:visible;
}
.card::before,.card::after{ /* 十字准星角标 */
  content:"";position:absolute;width:10px;height:10px;transition:.28s;opacity:0;
}
.card::before{top:-1px;left:-1px;border-top:2px solid var(--beam-deep);border-left:2px solid var(--beam-deep)}
.card::after{bottom:-1px;right:-1px;border-bottom:2px solid var(--beam-deep);border-right:2px solid var(--beam-deep)}
.card:hover{transform:translateY(-6px);border-color:var(--beam-deep);box-shadow:var(--shadow-sm)}
.card:hover::before,.card:hover::after{opacity:1}
.card .ico{
  width:54px;height:54px;border-radius:0;display:flex;align-items:center;justify-content:center;
  background:var(--ink);margin-bottom:22px;position:relative;
}
.card .ico::after{content:"";position:absolute;inset:-4px;border:1px solid var(--line);pointer-events:none}
.card .ico svg{width:28px;height:28px;stroke:var(--beam);fill:none;stroke-width:1.6}
.card h3{font-size:19.5px;color:var(--navy);margin-bottom:12px;font-weight:700;font-family:var(--serif);letter-spacing:1px}
.card p{color:var(--muted);font-size:14.5px}
.card .tag{
  position:absolute;top:-1px;right:-1px;background:var(--ink);color:var(--beam);
  font-size:14px;padding:5px 14px;border-radius:0;font-weight:600;
  font-family:var(--mono);letter-spacing:2px;
}
.section.dark .card{background:rgba(255,255,255,.03);border-color:var(--line-dark)}
.section.dark .card h3{color:#fff}
.section.dark .card p{color:#8FA5B8}

/* 产品卡（带图） */
.product-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;transition:.28s;position:relative;
}
.product-card:hover{box-shadow:var(--shadow-sm);transform:translateY(-5px);border-color:var(--beam-deep)}
.product-card .pimg{height:210px;border-bottom:1px solid var(--line);border-radius:0;position:relative;background:#fff}
.product-card .pimg img{width:100%;height:100%;object-fit:contain;padding:16px}
.product-card .pimg::after{content:"";position:absolute;inset:0;z-index:2}
/* 正方形照片卡（如可控核聚变 4 图一行）：图片区改为 1:1 满铺裁切 */
.cards-square .product-card .pimg{height:auto;aspect-ratio:1/1;background:#0a1726}
.cards-square .product-card .pimg img{padding:0;object-fit:cover}
.product-card .pbody{padding:26px}
.product-card .pbody h3{color:var(--navy);font-size:18.5px;margin-bottom:10px;font-family:var(--serif);font-weight:700}
.product-card .pbody p{color:var(--muted);font-size:14px}
.product-card .pbody .meta{
  margin-top:16px;font-size:14px;color:var(--beam-deep);font-weight:600;
  letter-spacing:1.5px;font-family:var(--mono);
  padding-top:14px;border-top:1px dashed var(--line);
}

/* =================== 装置交付清单（工程台账风） =================== */
.device-table{
  width:100%;border-collapse:collapse;background:var(--white);
  border:1px solid var(--line);border-radius:0;overflow:hidden;box-shadow:none;
}
.device-table th{
  background:var(--ink);color:#C4D4E0;padding:16px 20px;text-align:left;
  font-size:14px;font-weight:600;letter-spacing:2px;font-family:var(--mono);
  border-bottom:2px solid var(--beam);
}
.device-table td{padding:16px 20px;border-bottom:1px solid var(--line-cold);font-size:14.5px;color:var(--body)}
.device-table tr:last-child td{border-bottom:0}
.device-table tbody tr{transition:.15s}
.device-table tbody tr:hover td{background:#F2FAFB}
.device-table tr:nth-child(even) td{background:transparent}
.device-table tr:nth-child(even):hover td{background:#F2FAFB}
.device-table .cat{
  color:var(--beam-deep);font-weight:600;white-space:nowrap;font-size:14px;
  font-family:var(--mono);letter-spacing:1px;
}

/* =================== 新闻 =================== */
.news-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:36px}
.news-feature{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--white);box-shadow:none;transition:.25s}
.news-feature:hover{box-shadow:var(--shadow-sm)}
.news-feature .fimg{height:330px;position:relative;border-radius:0;border-bottom:1px solid var(--line)}
.news-feature .fbody{padding:28px}
.news-feature .date{color:var(--beam-deep);font-size:14px;font-weight:600;letter-spacing:2px;font-family:var(--mono)}
.news-feature h3{color:var(--navy);font-size:22px;margin:12px 0;line-height:1.5;font-family:var(--serif);font-weight:700}
.news-feature p{color:var(--muted);font-size:14.5px}
.news-list{display:flex;flex-direction:column;gap:0}
.news-item{
  padding:22px 0;border-bottom:1px solid var(--line);display:flex;flex-direction:column;gap:7px;
  transition:.2s;position:relative;
}
.news-item:hover{padding-left:14px}
.news-item:hover::before{content:"";position:absolute;left:0;top:26px;bottom:26px;width:3px;background:var(--beam-deep)}
.news-item:hover h4{color:var(--beam-deep)}
.news-item .date{color:#98A4B5;font-size:14px;letter-spacing:1.5px;font-family:var(--mono)}
.news-item h4{color:var(--navy);font-size:16px;font-weight:600;line-height:1.55;transition:.2s}

/* 新闻中心动态页（news.html） */
.news-tabs{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:30px}
.news-tabs a{
  cursor:pointer;padding:8px 24px;border:1px solid var(--line);color:var(--muted);
  font-size:14px;transition:.2s;letter-spacing:1px;border-radius:0;
}
.news-tabs a.on,.news-tabs a:hover{background:var(--ink);border-color:var(--ink);color:var(--beam)}
.news-dyn-list .news-item{display:flex;flex-direction:row;gap:22px;align-items:center;justify-content:space-between;cursor:pointer;text-decoration:none;color:inherit}
.news-dyn-list .ni-text{flex:1;min-width:0;display:flex;flex-direction:column;gap:7px}
.news-dyn-list .ni-thumb{flex:0 0 172px;width:172px;height:106px;overflow:hidden;border:1px solid var(--line);background:#F4F7FA}
.news-dyn-list .ni-thumb img{width:100%;height:100%;object-fit:cover;display:block;transition:.35s}
.news-dyn-list .news-item:hover .ni-thumb img{transform:scale(1.05)}
.news-dyn-list .news-item p{color:var(--muted);font-size:14px;margin-top:6px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
@media(max-width:560px){
  .news-dyn-list .news-item{gap:14px}
  .news-dyn-list .ni-thumb{flex-basis:104px;width:104px;height:70px}
}
.news-dyn-list .cat,.news-dyn-list .ext{
  font-style:normal;font-size:14px;border-radius:0;padding:2px 9px;margin-left:10px;
  font-family:var(--mono);letter-spacing:1px;
  background:#EAF6F8;color:var(--beam-deep);
}
.news-dyn-list .ext{background:#EDF1F6;color:#0B2E59}
.news-pager{display:flex;gap:8px;justify-content:center;align-items:center;margin-top:40px;flex-wrap:wrap}
.news-pager a{
  cursor:pointer;min-width:36px;text-align:center;padding:7px 9px;border:1px solid var(--line);
  color:var(--muted);font-family:var(--mono);font-size:14px;border-radius:0;transition:.2s;
}
.news-pager a:hover{border-color:var(--beam-deep);color:var(--beam-deep)}
.news-pager a.on{background:var(--ink);border-color:var(--ink);color:var(--beam)}
.news-pager a.pg-nav{font-size:16px;line-height:1;padding:6px 11px}
.news-pager a.disabled{opacity:.35;cursor:not-allowed;pointer-events:none}
.news-pager .pg-gap{color:var(--muted);min-width:18px;text-align:center;-webkit-user-select:none;user-select:none}
.news-empty{text-align:center;color:var(--muted);padding:56px 0;font-size:14.5px}

/* 新闻详情 */
.nd-wrap{max-width:860px;margin:0 auto}
.nd-title{color:var(--navy);font-size:30px;line-height:1.5;margin-bottom:16px;font-family:var(--serif);font-weight:800}
.nd-meta{
  color:#98A4B5;font-size:14px;padding-bottom:20px;border-bottom:1px solid var(--line);
  margin-bottom:30px;font-family:var(--mono);letter-spacing:1.5px;
}
.nd-cover{margin:8px 0 24px}
.nd-cover img{width:100%;max-height:440px;object-fit:cover;border-radius:8px;border:1px solid var(--line);display:block}
.nd-body{color:var(--body);font-size:15.5px;line-height:2.1}
.nd-body p{margin-bottom:1.1em}
.nd-body img{max-width:100%;height:auto;border-radius:6px;border:1px solid var(--line)}
.nd-body h2,.nd-body h3{color:var(--navy);margin:1.2em 0 .5em}
.nd-body blockquote{border-left:3px solid var(--beam-deep);padding:4px 16px;color:#5C6B7E;background:#F7FAFC;margin:1em 0}
.nd-body ul,.nd-body ol{padding-left:1.4em;margin-bottom:1.1em}
.nd-back{display:inline-block;margin-top:40px;color:var(--beam-deep);font-size:14px;letter-spacing:1px}
.nd-back:hover{color:var(--navy)}

/* =================== 内页 banner =================== */
.page-banner{
  position:relative;height:320px;display:flex;align-items:center;
  background:var(--ink);color:#fff;overflow:hidden;border-bottom:1px solid var(--line-dark);
}
.page-banner .grid-overlay{position:absolute;inset:0}
.page-banner .grid-overlay::before{
  content:"";position:absolute;inset:-60% -20%;
  background:repeating-radial-gradient(circle at 85% 20%,
    transparent 0 50px,rgba(31,182,214,.075) 50px 52px);
}
.page-banner .grid-overlay::after{
  content:"";position:absolute;inset:-60% -20%;
  background:repeating-radial-gradient(circle at 78% 35%,
    transparent 0 44px,rgba(31,182,214,.06) 44px 46px);
}
.page-banner .container{position:relative;z-index:2}
/* 内页 banner 场景背景：淡铺 + 深色渐变遮罩，白字保持可读 */
.page-banner.has-banner-bg .banner-bg{position:absolute;inset:0;z-index:0}
.page-banner.has-banner-bg .banner-bg img{width:100%;height:100%;object-fit:cover;opacity:.28}
.page-banner.has-banner-bg .banner-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(7,18,38,.92),rgba(7,18,38,.66) 55%,rgba(7,18,38,.42));
}
.page-banner .kicker{
  color:var(--beam);letter-spacing:6px;font-size:14px;font-weight:600;font-family:var(--mono);
  display:inline-flex;align-items:center;gap:12px;
}
.page-banner .kicker::before{content:"";width:30px;height:1px;background:var(--beam);opacity:.6}
.page-banner h1{font-size:42px;font-weight:900;margin-top:14px;letter-spacing:4px;font-family:var(--serif)}
.breadcrumb{margin-top:16px;color:#7E94A8;font-size:14px;font-family:var(--mono);letter-spacing:1px}
.breadcrumb a:hover{color:var(--beam)}

/* =================== 内页正文 =================== */
.prose{max-width:900px;margin:0 auto}
.prose h3{
  color:var(--navy);font-size:25px;margin:44px 0 18px;padding-left:0;border-left:0;
  font-weight:800;font-family:var(--serif);letter-spacing:1px;
  display:flex;align-items:center;gap:14px;
}
.prose h3::before{content:"";width:9px;height:9px;background:var(--plasma);transform:rotate(45deg);flex-shrink:0}
.prose p{color:var(--body);margin-bottom:16px;line-height:2.05}
.prose ul{margin:0 0 18px 22px}
.prose li{margin-bottom:9px;color:var(--body)}
.prose .lead{
  font-size:17px;color:var(--body);border-left:3px solid var(--beam-deep);background:var(--paper);
  padding:26px 30px;border-radius:0;margin-bottom:32px;line-height:2;
}

/* 时间轴 */
.timeline{position:relative;max-width:820px;margin:0 auto;padding-left:34px}
.timeline::before{content:"";position:absolute;left:7px;top:8px;bottom:8px;width:1px;background:var(--line);border-left:1px dashed #C8D4E0}
.tl-item{position:relative;padding:0 0 38px 28px}
.tl-item::before{
  content:"";position:absolute;left:-32px;top:8px;width:12px;height:12px;border-radius:0;
  background:var(--white);border:2px solid var(--beam-deep);transform:rotate(45deg);box-shadow:none;
}
.tl-item .yr{color:var(--beam-deep);font-weight:600;font-size:19px;font-family:var(--mono);letter-spacing:1px}
.tl-item p{color:var(--muted);margin-top:6px}

/* 团队卡 */
.team-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;text-align:center;transition:.25s}
.team-card:hover{box-shadow:var(--shadow-sm);transform:translateY(-5px);border-color:var(--beam-deep)}
.team-card .photo{height:280px;border-radius:0;border-bottom:1px solid var(--line)}
.team-card .photo.portrait img{object-position:top center}
/* 横向群像（如工程运维）：去掉 contain 白边、上下留白换柔和底色，让人物更满更大 */
.team-card .photo.contain img{padding:0;background:#eaf0f6}
/* 首席科学家：横排紧凑卡（小照片在左，信息在右，避免大头照） */
.team-card.chief{display:flex;text-align:left}
.team-card.chief .photo{width:150px;min-width:150px;height:auto;border-bottom:0;border-right:1px solid var(--line);background:#eef3f8}
.team-card.chief .photo img{width:100%;height:100%;object-fit:cover;object-position:top center}
.team-card.chief .tbody{flex:1;padding:24px}
.team-card.chief .tbody p{text-align:left}
@media(max-width:560px){.team-card.chief{display:block}.team-card.chief .photo{width:100%;height:240px;border-right:0;border-bottom:1px solid var(--line)}}
.team-card .tbody{padding:24px}
.team-card .tbody h3{color:var(--navy);font-size:20px;font-family:var(--serif)}
.team-card .tbody .role{color:var(--beam-deep);font-size:14px;font-weight:600;margin:8px 0 12px;font-family:var(--mono);letter-spacing:1px}
.team-card .tbody p{color:var(--muted);font-size:14px;text-align:left}
/* 团队卡做成可点击链接 */
a.team-card{text-decoration:none;color:inherit;display:block}
a.team-card.chief{display:flex}
.team-card .more{margin-top:14px;display:inline-flex;align-items:center;gap:7px;font-family:var(--mono);font-size:14px;letter-spacing:1px;color:var(--beam-deep);opacity:.85;transition:.22s}
a.team-card:hover .more{gap:12px;opacity:1}

/* ---------- 团队：人物详情页 ---------- */
.member-hero{display:grid;grid-template-columns:300px 1fr;gap:50px;align-items:start}
.member-portrait{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#eef3f8;aspect-ratio:3/4}
.member-portrait img{width:100%;height:100%;object-fit:cover;object-position:top center;display:block}
.member-id .role{display:inline-block;font-family:var(--mono);font-size:14px;letter-spacing:2px;color:#fff;background:var(--beam-deep);padding:5px 13px;border-radius:4px}
.member-id h2{font-family:var(--serif);font-size:33px;color:var(--navy);margin:16px 0 8px;letter-spacing:1px;font-weight:900}
.member-id .affil{color:var(--muted);font-size:14.5px;line-height:1.95}
.member-id .summary{margin-top:20px;color:var(--body);line-height:2.05;font-size:15.5px}
.member-facts{list-style:none;margin:22px 0 0;display:flex;flex-wrap:wrap;gap:10px;padding:0}
.member-facts li{font-family:var(--mono);font-size:14px;color:var(--beam-deep);border:1px solid var(--line);border-radius:20px;padding:6px 14px;background:var(--paper)}
.member-body{max-width:900px;margin:54px auto 0;border-top:1px solid var(--line);padding-top:10px}
.back-link{display:inline-flex;align-items:center;gap:8px;margin-top:34px;font-family:var(--mono);font-size:14px;letter-spacing:1px;color:var(--beam-deep)}
.back-link:hover{gap:14px}
/* 团队分组页：横幅图 + 说明 */
.team-detail-fig{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin:0 0 32px;background:#eef3f8}
.team-detail-fig img{width:100%;height:auto;display:block}
@media(max-width:720px){.member-hero{grid-template-columns:1fr;gap:26px}.member-portrait{max-width:260px}}

/* 联系 */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:46px;align-items:start}
.contact-info .row{display:flex;gap:18px;padding:22px 0;border-bottom:1px solid var(--line)}
.contact-info .row .ic{
  width:46px;height:46px;border-radius:0;background:var(--ink);
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.contact-info .row .ic svg{width:21px;height:21px;stroke:var(--beam);fill:none;stroke-width:1.6}
.contact-info .row h4{color:var(--navy);font-size:15.5px;font-weight:700}
.contact-info .row p{color:var(--muted);font-size:14px}
.form-box{background:var(--paper);padding:38px;border-radius:0;border:1px solid var(--line);position:relative}
.form-box::before{content:"";position:absolute;top:-1px;left:-1px;width:14px;height:14px;border-top:2px solid var(--beam-deep);border-left:2px solid var(--beam-deep)}
.form-box::after{content:"";position:absolute;bottom:-1px;right:-1px;width:14px;height:14px;border-bottom:2px solid var(--beam-deep);border-right:2px solid var(--beam-deep)}
.form-box label{display:block;font-size:14px;color:var(--navy);font-weight:600;margin:16px 0 6px;letter-spacing:1px}
.form-box input,.form-box textarea{
  width:100%;padding:13px 15px;border:1px solid var(--line);border-radius:0;
  font-size:14px;font-family:inherit;background:var(--white);transition:.2s;
}
.form-box input:focus,.form-box textarea:focus{outline:none;border-color:var(--beam-deep);box-shadow:0 0 0 3px rgba(15,122,154,.12)}
.form-box textarea{min-height:120px;resize:vertical}

/* =================== 页脚 =================== */
.footer{background:var(--navy);color:#7E94A8;padding:70px 0 0;border-top:1px solid var(--line-dark);position:relative}
.footer::before{ /* 顶部光束线 */
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,182,214,.6) 50%,transparent);
}
/* 页脚比正文容器更宽，减少宽屏下两侧大留白；链接列给足宽度避免换行 */
.footer .container{max-width:1760px}
/* 对齐 startorus 页脚结构：4 个文字列等宽 + 二维码末列，整体两端对齐、均匀铺开 */
.footer .fgrid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr)) auto;gap:48px;padding-bottom:50px;align-items:start}
.footer .fbrand .word .cn{color:#fff;font-size:21px;font-weight:800;font-family:var(--serif);letter-spacing:2px}
.footer .fbrand .word .en{color:var(--beam);font-size:14px;letter-spacing:4px;font-family:var(--mono)}
.footer .fbrand p{margin-top:18px;font-size:14px;line-height:2;max-width:400px}
/* 品牌标题/简介已移除，联系方式作为左列首块，与其它列标题顶对齐 */
.footer .fbrand .fcontact{margin-top:0}
.footer .fbrand .fcontact h5{margin-bottom:14px}
/* 页脚公众号二维码（右侧独立一列） */
.footer .fqr-col{display:flex;flex-direction:column;align-items:center;gap:10px;text-align:center}
.footer .fqr-col .qr-box{width:180px;height:172px;flex:0 0 auto;background:#fff;border-radius:8px;padding:8px;
  display:flex;align-items:center;justify-content:center;overflow:hidden}
.footer .fqr-col .qr-box img{width:100%;height:100%;object-fit:contain;display:block}
.footer .fqr-col .qr-box.qr-empty{background:rgba(255,255,255,.04);border:1px dashed var(--line-dark);padding:0}
.footer .fqr-col .qr-box.qr-empty::after{content:"公众号\A 二维码";white-space:pre;text-align:center;
  font-family:var(--mono);font-size:14px;letter-spacing:1px;color:#566B7E;line-height:1.6}
.footer .fqr-col>span{font-size:14px;color:#9FB4C6;line-height:1.5}
.footer .flinks ul li a[target]::after{content:"↗";margin-left:5px;font-size:14px;opacity:.5}
.footer h5{
  color:#fff;font-size:14px;margin-bottom:20px;font-weight:600;
  letter-spacing:3px;font-family:var(--mono);
  display:flex;align-items:center;gap:10px;
}
.footer h5::before{content:"";width:14px;height:1px;background:var(--beam)}
.footer ul{list-style:none}
.footer ul li{margin-bottom:12px;font-size:14px}
.footer ul li a{transition:.2s}
.footer ul li a:hover{color:var(--beam)}
.footer .fcontact p{font-size:14px;margin-bottom:11px;line-height:1.8}
.footer .copyright{
  border-top:1px solid var(--line-dark);padding:24px 0;text-align:center;
  font-size:14px;color:#566B7E;font-family:var(--mono);letter-spacing:.5px;
}

/* =================== 动画 =================== */
.reveal{opacity:0;transform:translateY(30px);transition:.8s cubic-bezier(.16,.7,.3,1)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .hero::after,.hero .grid-overlay::before,.hero .grid-overlay::after,.hero .eyebrow::before{animation:none}
}

/* =================== 响应式 =================== */
@media(max-width:980px){
  :root{--nav-h:68px}              /* 平板/手机：导航栏压缩到 68px，更紧凑 */
  .home-about{grid-template-columns:1fr!important;gap:36px!important}
  /* 移动端：隐藏桌面导航（含 mega/submenu），改用 JS 生成的多级下钻抽屉 .mnav（挂在 body 上）*/
  .menu{display:none}
  .nav-toggle{display:block;z-index:1300;position:relative;font-size:24px}
  body.nav-open{overflow:hidden}     /* 菜单全屏时锁住背景滚动 */
  .grid-3>*,.grid-4>*{flex-basis:calc((100% - 26px)/2);max-width:calc((100% - 26px)/2)}
  .news-grid,.contact-grid{grid-template-columns:1fr}
  .stats .container{grid-template-columns:1fr 1fr}
  .stat{border-left:0!important}
  .hero h1{font-size:40px}
  .hero{min-height:560px}
  .footer .fgrid{grid-template-columns:1fr 1fr}
  .footer .fbrand{grid-column:1/-1}
  .asset-gallery-head{display:block}
  .asset-gallery-head p{margin-top:10px}
  .asset-gallery-grid>*{flex-basis:calc((100% - 18px)/2);max-width:calc((100% - 18px)/2)}
}
/* 手机端页脚「手风琴」：各栏默认收起，点标题展开（.open 由 JS 加到栏容器），仿 Apple */
@media(max-width:700px){
  .footer{padding-top:20px}
  .footer .fgrid{grid-template-columns:1fr;gap:0;padding-bottom:20px}
  .footer .fbrand{grid-column:auto}
  .footer .fbrand .word,.footer .fbrand>p{display:none}   /* 手机页脚只留可折叠信息栏 */
  .footer .fcontact,.footer .fnav,.footer .flinks{
    border-top:1px solid rgba(255,255,255,.09);margin:0;
  }
  .footer .fcontact>h5,.footer .fnav>h5,.footer .flinks>h5{
    margin:0;padding:18px 30px 18px 0;cursor:pointer;position:relative;-webkit-user-select:none;user-select:none;
  }
  /* 右侧展开箭头（收起=朝下，展开=朝上） */
  .footer .fcontact>h5::after,.footer .fnav>h5::after,.footer .flinks>h5::after{
    content:"";position:absolute;right:6px;top:50%;width:8px;height:8px;
    border-right:2px solid #fff;border-bottom:2px solid #fff;opacity:.55;
    transform:translateY(-70%) rotate(45deg);transition:transform .25s;
  }
  .footer .fcontact.open>h5::after,.footer .fnav.open>h5::after,.footer .flinks.open>h5::after{
    transform:translateY(-30%) rotate(-135deg);opacity:.9;
  }
  /* 内容默认收起，展开后显示 */
  .footer .fcontact>:not(h5),.footer .fnav>ul,.footer .flinks>ul{
    display:none;padding:2px 0 16px;
  }
  .footer .fcontact.open>:not(h5),.footer .fnav.open>ul,.footer .flinks.open>ul{display:block}
  /* 二维码栏放到底部、不参与折叠 */
  .footer .fqr-col{margin-top:26px;padding-top:8px}
}
@media(max-width:600px){
  :root{--nav-h:60px}              /* 小屏手机：导航再压一档 */
  .nav .container{gap:12px}
  .brand{gap:9px}
  .brand .logo,.brand .logo img{width:38px}
  .brand .word .cn{font-size:18px;letter-spacing:1px}
  .brand .word .en{font-size:11px;letter-spacing:1px}
  .nav-toggle{padding:3px 10px;font-size:20px}
  .device-table{display:block;overflow-x:auto}
  .device-table th,.device-table td{white-space:nowrap}
  .grid-2>*,.grid-3>*,.grid-4>*{flex-basis:100%;max-width:100%}
  .footer .fgrid{grid-template-columns:1fr}
  .section{padding:60px 0}
  .hero h1{font-size:31px;letter-spacing:1px}
  .hero .sub{font-size:15.5px}
  .sec-head h2{font-size:27px}
  .page-banner h1{font-size:28px;letter-spacing:2px}
  .page-banner{height:250px}
  .stat .num{font-size:40px}
  .hero-meta span{padding:10px 14px 10px 0;margin-right:14px;font-size:14px}
  .asset-gallery-grid>*{flex-basis:100%;max-width:100%}
  .asset-tile{min-height:0}
  .contact-visual{height:260px}
}

/* ── 右下角悬浮客服按钮（全站固定，随滚动常驻；白底黑线条） ── */
.contact-fab{
  position:fixed; right:34px; bottom:52px; z-index:1200;
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:4px;
  width:60px; height:60px; border-radius:14px;
  background:#fff; color:#1a1a1a; text-decoration:none;
  border:1px solid #E3E8EE;
  box-shadow:0 6px 18px rgba(11,46,89,.14);
  transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.contact-fab:hover{ transform:translateY(-3px); box-shadow:0 10px 26px rgba(11,46,89,.22); border-color:var(--beam-deep); }
.contact-fab:active{ transform:translateY(-1px); }
.contact-fab svg{ width:26px; height:26px; }
.contact-fab span{ font-size:14px; line-height:1; letter-spacing:1px; font-weight:600; }
@media(max-width:640px){
  .contact-fab{ right:18px; bottom:40px; width:52px; height:52px; border-radius:12px; gap:3px; }
  .contact-fab svg{ width:22px; height:22px; }
  .contact-fab span{ font-size:14px; }
}

/* 返回顶部悬浮按钮：与客服按钮成对，位于其正上方；滚动一段距离后淡入 */
.to-top-fab{
  position:fixed; right:34px; bottom:126px; z-index:1200;
  display:flex; align-items:center; justify-content:center;
  width:60px; height:48px; border-radius:14px;
  background:#fff; color:var(--beam-deep,#0B2E59); cursor:pointer;
  border:1px solid #E3E8EE; padding:0;
  box-shadow:0 6px 18px rgba(11,46,89,.14);
  opacity:0; transform:translateY(10px); pointer-events:none;
  transition:opacity .25s ease, transform .25s ease, box-shadow .2s ease, border-color .2s ease;
}
.to-top-fab.show{ opacity:1; transform:translateY(0); pointer-events:auto; }
.to-top-fab:hover{ transform:translateY(-3px); box-shadow:0 10px 26px rgba(11,46,89,.22); border-color:var(--beam-deep); }
.to-top-fab:active{ transform:translateY(-1px); }
.to-top-fab svg{ width:24px; height:24px; }
@media(max-width:640px){
  .to-top-fab{ right:18px; bottom:104px; width:52px; height:44px; border-radius:12px; }
  .to-top-fab svg{ width:22px; height:22px; }
}