@charset "utf-8";
/* ===================== 换肤区 ===================== */
:root{
  --brand-rgb:234,88,12;         /* 工程橙 */
  --steel-rgb:51,65,85;          /* 钢蓝灰（深文字/竖栏文字） */
  --paper-rgb:250,250,249;       /* 纸白主底 */
  --mist-rgb:242,242,240;        /* 浅灰分区底 */
  /* ================================================ */

  --brand:rgb(var(--brand-rgb));
  --brand-soft:rgba(var(--brand-rgb),.1);
  --steel:rgb(var(--steel-rgb));
  --paper:rgb(var(--paper-rgb));
  --mist:rgb(var(--mist-rgb));
  --ink:#1c1d21;                 /* 主标题近黑 */
  --muted:#6b7280;               /* 次要灰 */
  --line:#e3e3e0;               /* 浅分隔线 */
  --line2:#d2d2ce;
  --white:#fff;

  --nav-w:260px;                 /* 左竖栏宽度 */

  --ff:"Helvetica Neue",Arial,"Microsoft YaHei","PingFang SC",sans-serif;
  --ff-num:"Bahnschrift","DIN Alternate","Arial Narrow",Impact,sans-serif;
  --ff-mono:"SFMono-Regular",Consolas,"Roboto Mono","Courier New",monospace;

  --radius:4px;
  --shadow:0 10px 30px rgba(28,29,33,.08);
  --shadow-sm:0 4px 14px rgba(28,29,33,.06);
  --ct:1180px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{font-family:var(--ff);color:#33353b;background:var(--paper);font-size:16px;line-height:1.75;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
li{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
input,textarea{font-family:inherit}
h1,h2,h3,h4,h5,h6{font-weight:800;line-height:1.18;color:var(--ink)}
::selection{background:var(--brand);color:#fff}
.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.ct{width:100%;max-width:var(--ct);margin:0 auto;padding:0 40px}

/* ===================== 按钮 ===================== */
.btn{display:inline-flex;align-items:center;gap:10px;padding:14px 28px;font-weight:700;font-size:15px;border-radius:var(--radius);transition:.2s;letter-spacing:.01em}
.btn svg{width:18px;height:18px;flex:none;transition:transform .2s}
.btn:hover svg{transform:translateX(4px)}
.btn-gold{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(var(--brand-rgb),.28)}
.btn-gold:hover{background:#c74f0b;box-shadow:0 12px 26px rgba(var(--brand-rgb),.36);transform:translateY(-2px)}
.btn-line,.btn-ghost{background:var(--white);color:var(--ink);border:1.5px solid var(--line2)}
.btn-line:hover,.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn-sm{padding:9px 18px;font-size:13px}

/* ===================== 区块标题（左侧巨型编号锚点，非居中） ===================== */
.shd{margin-bottom:52px;display:grid;grid-template-columns:auto 1fr;gap:26px;align-items:end;position:relative}
.shd::before{content:attr(data-no);grid-row:1/3;font-family:var(--ff-num);font-size:clamp(60px,9vw,140px);font-weight:700;line-height:.72;color:var(--brand);opacity:.14;letter-spacing:-.04em}
.shd .en{display:block;font-family:var(--ff-mono);font-size:13px;font-weight:700;letter-spacing:.22em;text-transform:uppercase;color:var(--brand);margin-bottom:8px}
.shd h2{font-size:clamp(28px,3.6vw,48px);letter-spacing:-.02em}
.shd .sub{grid-column:2;color:var(--muted);font-size:16px;max-width:660px;margin-top:12px}
/* 兼容旧居中标题（部分单页仍用），改为左对齐编辑式 */
.shd.ctr{text-align:left}

/* reveal */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .6s ease,transform .6s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}
html:not(.js) .reveal{opacity:1;transform:none}

/* ===================== 布局：左竖栏 + 右内容 ===================== */
.layout{position:relative}
.main{margin-left:var(--nav-w);position:relative;min-height:100vh;background:var(--paper)}

/* 顶部移动条（桌面隐藏） */
.mtop{display:none}

/* 左竖向固定导航 */
.side{position:fixed;left:0;top:0;bottom:0;width:var(--nav-w);z-index:60;background:var(--white);border-right:1px solid var(--line);display:flex;flex-direction:column}
.side-logo{padding:30px 28px;border-bottom:1px solid var(--line)}
.side-logo img{height:46px;width:auto;object-fit:contain}
.side-nav{flex:1;overflow-y:auto;padding:18px 0}
.side-nav>ul>li{position:relative}
.side-nav>ul>li>a{display:flex;align-items:center;gap:10px;padding:14px 28px;font-weight:700;font-size:15.5px;color:var(--steel);transition:.2s;position:relative}
.side-nav>ul>li>a .caret{width:16px;height:16px;margin-left:auto;transition:transform .3s;color:var(--muted)}
.side-nav>ul>li>a::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:0;height:22px;background:var(--brand);border-radius:0 3px 3px 0;transition:.2s}
.side-nav>ul>li:hover>a,.side-nav>ul>li.active>a{color:var(--brand);background:var(--brand-soft)}
.side-nav>ul>li:hover>a::before,.side-nav>ul>li.active>a::before{width:4px}
/* 二级菜单：桌面端点击/悬停在竖栏内展开（浅底） */
.side-nav .sub{background:var(--mist);overflow:hidden;max-height:0;transition:max-height .3s ease}
.side-nav>ul>li:hover .sub{max-height:500px}
.side-nav .sub li a{display:block;padding:11px 28px 11px 46px;color:var(--muted);font-size:14px;font-weight:600;transition:.2s;position:relative}
.side-nav .sub li a::before{content:"";position:absolute;left:30px;top:50%;transform:translateY(-50%);width:5px;height:5px;border-radius:50%;background:var(--line2);transition:.2s}
.side-nav .sub li a:hover{color:var(--brand)}
.side-nav .sub li a:hover::before{background:var(--brand)}
/* 竖栏底部：搜索 + 电话 */
.side-foot{padding:22px 28px;border-top:1px solid var(--line);background:var(--mist)}
.side-foot .s-tel-label{font-family:var(--ff-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.side-foot .s-tel{font-family:var(--ff-num);font-size:24px;font-weight:700;color:var(--brand);margin:4px 0 14px}
.side-foot .s-soc{display:flex;gap:10px}
.side-foot .s-soc button,.side-foot .s-soc a{width:42px;height:42px;display:grid;place-items:center;border:1.5px solid var(--line2);border-radius:var(--radius);color:var(--steel);transition:.2s}
.side-foot .s-soc button svg,.side-foot .s-soc a svg{width:18px;height:18px}
.side-foot .s-soc button:hover,.side-foot .s-soc a:hover{background:var(--brand);color:#fff;border-color:var(--brand)}

.side-mask{display:none}

/* 搜索弹层（浅色） */
.search-pop{position:fixed;inset:0;z-index:120;background:rgba(28,29,33,.5);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transition:.3s}
.search-pop.show{opacity:1;visibility:visible}
.search-pop form{display:flex;width:min(680px,86vw);background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.search-pop input{flex:1;border:none;padding:20px 24px;font-size:19px;outline:none}
.search-pop button[type=submit]{width:70px;background:var(--brand);color:#fff;display:grid;place-items:center}
.search-pop button svg{width:24px;height:24px}
.search-close{position:absolute;top:30px;right:40px;font-size:44px;color:#fff;line-height:1}

/* ===================== 首页 Hero（全宽大图幻灯背景 + 左侧文字叠层） ===================== */
.hero{position:relative;overflow:hidden;min-height:100vh;display:flex;align-items:center}
/* 全铺幻灯背景 */
.hero-slider{position:absolute;inset:0;z-index:0}
.hs-track{position:absolute;inset:0}
.hs-slide{position:absolute;inset:0;opacity:0;visibility:hidden;transform:scale(1.08);transition:opacity 1s ease,transform 7s ease,visibility 1s}
.hs-slide img{width:100%;height:100%;object-fit:cover;display:block}
.hs-slide.on,.hs-track .hs-slide:first-child{opacity:1;visibility:visible;transform:scale(1);z-index:1}
.hs-track .hs-slide:first-child:not(.on){transition:none}
.hs-track.ready .hs-slide:first-child:not(.on){opacity:0;visibility:hidden}
/* 从左侧渐隐的浅色遮罩，保证左侧文字在浅色主题下清晰可读 */
.hero-scrim{position:absolute;inset:0;z-index:2;background:linear-gradient(100deg,var(--white) 0%,rgba(255,255,255,.92) 30%,rgba(255,255,255,.55) 52%,rgba(255,255,255,0) 74%)}
/* 文字叠层 */
.hero .hero-in{position:relative;z-index:3;width:100%;max-width:var(--ct);margin:0 auto;padding:0 40px}
.hero-left{padding:70px 0;max-width:640px}
.hero-tag{display:inline-flex;align-items:center;gap:9px;font-family:var(--ff-mono);font-size:12px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--brand);background:var(--brand-soft);padding:7px 15px;border-radius:100px;margin-bottom:26px}
.hero h1{font-size:clamp(40px,5.4vw,78px);line-height:1.04;letter-spacing:-.03em;color:var(--ink)}
.hero h1 b{color:var(--brand)}
.hero h1 .out{color:var(--steel)}
.hero p{margin-top:24px;max-width:46ch;color:var(--muted);font-size:17px}
.hero-acts{margin-top:38px;display:flex;gap:16px;flex-wrap:wrap}
.hero-stats{margin-top:44px;display:flex;gap:40px;flex-wrap:wrap;padding-top:30px;border-top:1px solid var(--line)}
.hero-stats .hs .n{font-family:var(--ff-num);font-size:38px;font-weight:700;color:var(--ink);line-height:1}
.hero-stats .hs .n i{font-style:normal;font-size:.5em;color:var(--brand);vertical-align:super}
.hero-stats .hs p{font-size:13px;color:var(--muted);margin-top:4px;font-weight:600}
/* 幻灯控件 */
.hs-dots{position:absolute;left:0;right:0;bottom:26px;z-index:6;display:flex;justify-content:center;gap:9px}
.hs-dots button{width:30px;height:4px;border:0;padding:0;border-radius:2px;background:rgba(255,255,255,.6);cursor:pointer;transition:background .3s,width .3s}
.hs-dots button.on{background:var(--brand);width:44px}
.hs-arr{position:absolute;top:50%;transform:translateY(-50%);width:52px;height:52px;border:0;border-radius:50%;background:rgba(255,255,255,.9);color:var(--ink);display:flex;align-items:center;justify-content:center;cursor:pointer;opacity:0;transition:opacity .3s,background .3s,color .3s;z-index:6;box-shadow:var(--shadow-sm)}
.hs-arr svg{width:22px;height:22px}
.hs-prev{left:22px}.hs-next{right:22px}
.hero:hover .hs-arr{opacity:1}
.hs-arr:hover{background:var(--brand);color:#fff}
.hero-badge{position:absolute;right:56px;bottom:72px;z-index:6;background:var(--brand);color:#fff;padding:20px 26px;border-radius:8px;box-shadow:0 14px 30px rgba(var(--brand-rgb),.35)}
.hero-badge .bn{font-family:var(--ff-num);font-size:34px;font-weight:700;line-height:1}
.hero-badge .bp{font-size:12px;letter-spacing:.06em;opacity:.92}
.hero-scroll{position:absolute;left:40px;bottom:24px;z-index:6;font-family:var(--ff-mono);font-size:11px;letter-spacing:.2em;color:var(--muted);display:flex;align-items:center;gap:10px}
.hero-scroll i{width:36px;height:2px;background:var(--brand);animation:scr 1.6s infinite}
@keyframes scr{0%,100%{opacity:.3;transform:scaleX(.4)}50%{opacity:1;transform:scaleX(1)}}

/* ===================== 数据条（浅底卡片） ===================== */
.facts{background:var(--mist);border-bottom:1px solid var(--line)}
.facts ul{max-width:var(--ct);margin:0 auto;padding:56px 40px;display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.facts li{background:var(--white);border:1px solid var(--line);border-radius:8px;padding:32px 26px;text-align:center;transition:.2s;box-shadow:var(--shadow-sm)}
.facts li:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:var(--brand)}
.facts .n{font-family:var(--ff-num);font-size:clamp(38px,4vw,56px);font-weight:700;line-height:1;color:var(--brand)}
.facts .n i{font-style:normal;font-size:.5em;vertical-align:super;color:var(--ink)}
.facts p{margin-top:8px;font-size:14px;font-weight:700;color:var(--muted)}

/* ===================== 通用区块 ===================== */
.sec{padding:96px 0}
.sec--alt{background:var(--mist)}

/* 关于（编辑式：大陈述 + 宽图带 + 图上叠加卡） */
.about-edit .ae-head{display:grid;grid-template-columns:1fr 1.3fr;gap:48px;align-items:end;margin-bottom:44px}
.ae-label .en{display:block;font-family:var(--ff-mono);font-size:13px;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--brand);margin-bottom:10px}
.ae-label h2{font-size:clamp(30px,4vw,52px);letter-spacing:-.02em}
.ae-statement{font-size:clamp(19px,2.2vw,26px);font-weight:700;line-height:1.45;color:var(--ink)}
.ae-statement b{color:var(--brand)}
.ae-band{position:relative;border-radius:12px;overflow:hidden;box-shadow:var(--shadow)}
.ae-band>img{width:100%;height:clamp(320px,42vw,520px);object-fit:cover;display:block}
.ae-over{position:absolute;left:0;bottom:0;max-width:min(560px,90%);background:var(--white);padding:36px 40px;border-radius:0 12px 0 0}
.ae-over .ae-text{color:var(--muted);font-size:15px;margin-bottom:22px}

/* 产品/业务：左右交替全宽横条（画册跨页式，非卡片网格） */
.field-list{display:flex;flex-direction:column;border-top:2px solid var(--ink)}
.field-row{display:grid;grid-template-columns:130px 1fr 300px;align-items:center;gap:40px;padding:36px 8px;border-bottom:1px solid var(--line);transition:background .25s;position:relative}
.field-row:hover{background:var(--white)}
.field-row .fno{font-family:var(--ff-num);font-size:clamp(48px,6vw,86px);font-weight:700;line-height:.8;color:var(--line2);transition:color .25s}
.field-row:hover .fno{color:var(--brand)}
.field-row .fmid{}
.field-row .fmid .fi{display:inline-flex;align-items:center;gap:8px;font-family:var(--ff-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--brand);margin-bottom:12px}
.field-row .fmid .fi svg{width:18px;height:18px}
.field-row .fmid h3{font-size:clamp(22px,2.6vw,32px);letter-spacing:-.01em}
.field-row .fmid p{margin-top:10px;color:var(--muted);font-size:15px;max-width:52ch}
.field-row .fpic{aspect-ratio:16/10;border-radius:8px;overflow:hidden;background:var(--mist);position:relative}
.field-row .fpic img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.field-row:hover .fpic img{transform:scale(1.05)}
.field-row .fgo{position:absolute;right:16px;bottom:16px;width:44px;height:44px;display:grid;place-items:center;background:var(--brand);color:#fff;border-radius:50%;opacity:0;transform:translateY(8px);transition:.25s}
.field-row .fgo svg{width:20px;height:20px}
.field-row:hover .fgo{opacity:1;transform:none}
/* 偶数行反向排布：图在左、文在右 */
.field-row:nth-child(even){grid-template-columns:300px 1fr 130px}
.field-row:nth-child(even) .fpic{order:1}
.field-row:nth-child(even) .fmid{order:2}
.field-row:nth-child(even) .fno{order:3;text-align:right}

/* 案例：横向滚动展带（非等宽 3 列） */
.case-scroll{display:flex;gap:24px;overflow-x:auto;padding:6px 40px 24px;margin:0 -40px;scroll-snap-type:x mandatory;scrollbar-width:thin}
.case-scroll::-webkit-scrollbar{height:8px}
.case-scroll::-webkit-scrollbar-thumb{background:var(--line2);border-radius:4px}
.case-slide{flex:0 0 clamp(280px,32vw,420px);scroll-snap-align:start;background:var(--white);border:1px solid var(--line);border-radius:10px;overflow:hidden;transition:.2s;box-shadow:var(--shadow-sm)}
.case-slide:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.case-slide .pic{aspect-ratio:4/3;overflow:hidden;background:var(--mist);position:relative}
.case-slide .pic img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.case-slide:hover .pic img{transform:scale(1.06)}
.case-slide .pic .cn{position:absolute;top:14px;left:14px;font-family:var(--ff-num);font-size:14px;font-weight:700;color:#fff;background:var(--brand);padding:3px 11px;border-radius:4px}
.case-slide .body{padding:24px}
.case-slide .body time{font-family:var(--ff-mono);font-size:12px;font-weight:700;color:var(--brand)}
.case-slide .body h3{margin:10px 0 8px;font-size:20px;line-height:1.3}
.case-slide .body p{color:var(--muted);font-size:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.case-hint{margin-top:14px;font-family:var(--ff-mono);font-size:12px;color:var(--muted);display:flex;align-items:center;gap:8px}
.case-hint i{width:26px;height:2px;background:var(--brand);display:inline-block}

/* 新闻：左大特稿 + 右列表（不对称杂志式） */
.news-mag{display:grid;grid-template-columns:1.15fr 1fr;gap:44px;align-items:stretch}
.news-feat-wrap{display:flex}
.news-feat{display:flex;flex-direction:column;background:var(--white);border:1px solid var(--line);border-radius:10px;overflow:hidden;transition:.2s;box-shadow:var(--shadow-sm);width:100%}
.news-feat:hover{box-shadow:var(--shadow)}
.news-feat .pic{aspect-ratio:16/9;overflow:hidden;background:var(--mist)}
.news-feat .pic img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.news-feat:hover .pic img{transform:scale(1.05)}
.news-feat .body{padding:30px}
.news-feat .tag{display:inline-block;font-family:var(--ff-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:#fff;background:var(--brand);padding:4px 12px;border-radius:100px;margin-bottom:14px}
.news-feat .body time{font-family:var(--ff-mono);font-size:12px;color:var(--muted);margin-left:10px}
.news-feat .body h3{font-size:24px;line-height:1.3;margin-bottom:10px}
.news-feat .body p{color:var(--muted);font-size:15px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-side{display:flex;flex-direction:column;gap:0;border-top:2px solid var(--ink)}
.news-li{display:flex;gap:18px;padding:20px 4px;border-bottom:1px solid var(--line);transition:.2s;align-items:baseline}
.news-li:hover{padding-left:12px}
.news-li time{font-family:var(--ff-num);font-size:15px;font-weight:700;color:var(--brand);flex:none;width:66px}
.news-li .nt h3{font-size:17px;line-height:1.35;transition:.2s}
.news-li:hover .nt h3{color:var(--brand)}
.news-li .nt p{margin-top:5px;color:var(--muted);font-size:13px;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}

/* FAQ 手风琴（浅底） */
.faq{max-width:900px}
.faq-item{background:var(--white);border:1px solid var(--line);border-radius:8px;margin-bottom:14px;transition:.2s;overflow:hidden}
.faq-item.on{border-color:var(--brand);box-shadow:var(--shadow-sm)}
.faq-q{display:flex;align-items:center;gap:16px;width:100%;text-align:left;padding:22px 26px}
.faq-q .qm{font-family:var(--ff-num);font-size:24px;font-weight:700;color:var(--brand);flex:none;line-height:1}
.faq-q h3{font-size:18px;flex:1}
.faq-q .ar{width:24px;height:24px;flex:none;transition:transform .3s;color:var(--brand)}
.faq-item.on .faq-q .ar{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-item.on .faq-a{max-height:400px}
.faq-a-in{padding:0 26px 24px 66px;color:var(--muted);font-size:15px}

/* CTA 咨询条（工程橙实底） */
.ctabar{background:var(--brand);color:#fff}
.ctabar .ct{padding:64px 40px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.ctabar h2{font-size:clamp(24px,3vw,38px);color:#fff}
.ctabar p{color:rgba(255,255,255,.9);margin-top:8px}
.ctabar .btn-ghost{background:#fff;border-color:#fff;color:var(--brand)}
.ctabar .btn-ghost:hover{background:rgba(255,255,255,.9)}

/* ===================== 页脚（浅底） ===================== */
.ft{background:var(--white);border-top:1px solid var(--line)}
.ft-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;padding:64px 0 48px}
.ft-logo img{height:44px;margin-bottom:22px;width:auto}
.ft-desc{color:var(--muted);font-size:15px;max-width:34ch}
.ft-col h4{font-family:var(--ff-mono);font-size:12px;font-weight:700;letter-spacing:.16em;color:var(--ink);margin-bottom:20px}
.ft-col ul li{margin-bottom:11px}
.ft-col ul li a{color:var(--muted);font-size:14px;font-weight:600;transition:.2s}
.ft-col ul li a:hover{color:var(--brand);padding-left:5px}
.ft-contact li{display:flex;gap:11px;color:var(--muted);font-size:14px;margin-bottom:14px;align-items:flex-start}
.ft-contact li svg{width:18px;height:18px;flex:none;color:var(--brand);margin-top:3px}
.ft-bottom{border-top:1px solid var(--line)}
.ft-bottom .ct{padding:22px 40px;display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--muted)}
.ft-bottom .links a{margin-left:18px;font-family:var(--ff-mono);letter-spacing:.06em;font-weight:700}
.ft-bottom .links a:hover{color:var(--brand)}

/* ===================== 首页友情链接 ===================== */
.flinks{border-top:1px solid var(--line);background:var(--white);padding:46px 0}
.flinks .ct{display:flex;align-items:baseline;gap:32px;flex-wrap:wrap}
.flinks .fl-hd{flex:none;display:flex;align-items:baseline;gap:12px}
.flinks .fl-hd .en{font-family:var(--ff-mono);font-size:12px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--brand)}
.flinks .fl-hd h2{font-size:20px;font-weight:800;color:var(--ink)}
.flinks .fl-list{flex:1;min-width:260px;display:flex;flex-wrap:wrap;gap:10px 22px;align-items:center}
.flinks .fl-list a{font-size:14px;color:var(--muted);transition:.18s;position:relative}
.flinks .fl-list a::after{content:"";position:absolute;left:0;right:100%;bottom:-3px;height:1.5px;background:var(--brand);transition:right .25s}
.flinks .fl-list a:hover{color:var(--brand)}
.flinks .fl-list a:hover::after{right:0}

#backTop{position:fixed;right:26px;bottom:26px;z-index:80;width:50px;height:50px;display:grid;place-items:center;background:var(--brand);color:#fff;border-radius:8px;box-shadow:0 8px 20px rgba(var(--brand-rgb),.3);opacity:0;visibility:hidden;transform:translateY(14px);transition:.25s}
#backTop.show{opacity:1;visibility:visible;transform:none}
#backTop:hover{transform:translateY(-3px)}
#backTop svg{width:22px;height:22px}

/* ===================== 内页横幅（浅底） ===================== */
.ihead{position:relative;background:var(--mist);border-bottom:1px solid var(--line);overflow:hidden}
.ihead-bg{position:absolute;inset:0;z-index:0}
.ihead-bg img{width:100%;height:100%;object-fit:cover;opacity:.14}
.ihead-grid{display:none}
.ihead .ct{position:relative;z-index:2;padding:70px 40px 56px}
.crumb{font-family:var(--ff-mono);font-size:12px;letter-spacing:.04em;color:var(--muted);display:flex;align-items:center;gap:9px;margin-bottom:22px}
.crumb .cr-ico{color:var(--brand);display:inline-grid;place-items:center}
.crumb .cr-ico svg{width:15px;height:15px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand)}
.ihead-en{font-family:var(--ff-mono);font-size:13px;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--brand);margin-bottom:10px}
.ihead-main h1{font-size:clamp(30px,4vw,52px);letter-spacing:-.02em}
.ihead-main h1::after{content:"";display:block;width:52px;height:4px;background:var(--brand);margin-top:18px;border-radius:2px}
.ihead-tag{display:none}

/* ===================== 内页主体 ===================== */
.inwrap{padding:70px 0}
.insplit{display:grid;grid-template-columns:250px 1fr;gap:44px;align-items:start}
.inrail{position:sticky;top:30px;background:var(--white);border:1px solid var(--line);border-radius:8px;overflow:hidden;box-shadow:var(--shadow-sm)}
.inrail-hd{padding:22px 24px;border-bottom:1px solid var(--line)}
.inrail-hd .en{display:block;font-family:var(--ff-mono);font-size:11px;letter-spacing:.14em;color:var(--brand)}
.inrail-hd h2{font-size:20px;margin-top:4px}
/* 左侧多级栏目树 */
.rail-tree{list-style:none}
.rail-tree .rt-a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:15px 24px;font-weight:600;font-size:14.5px;color:var(--steel);border-top:1px solid var(--line);transition:.18s;cursor:pointer}
.rail-tree .rt-a span{flex:1}
.rail-tree .rt-a .rt-arr{font-family:var(--ff-mono);font-style:normal;color:var(--line2);transition:.18s}
.rail-tree .rt-a .rt-caret{display:flex;color:var(--line2);transition:transform .25s,color .18s}
.rail-tree .rt-a .rt-caret svg{width:16px;height:16px}
.rail-tree .rt-a:hover,.rail-tree .rt-li.active>.rt-a{background:var(--brand-soft);color:var(--brand)}
.rail-tree .rt-a:hover .rt-arr,.rail-tree .rt-li.active>.rt-a .rt-arr{color:var(--brand);transform:translateX(3px)}
.rail-tree .rt-li.active>.rt-a .rt-caret,.rail-tree .rt-li.open>.rt-a .rt-caret{transform:rotate(180deg);color:var(--brand)}
/* 二级：默认折叠，当前分支或 .open 展开 */
.rt-sub{list-style:none;max-height:0;overflow:hidden;background:var(--mist);transition:max-height .3s ease}
.rt-li.active>.rt-sub,.rt-li.open>.rt-sub{max-height:900px}
.rt-sub .rt-sa{display:flex;align-items:center;justify-content:space-between;padding:12px 24px 12px 38px;font-size:13.5px;font-weight:600;color:var(--steel);border-top:1px solid var(--line);transition:.18s;cursor:pointer}
.rt-sub .rt-sa span{flex:1;position:relative;padding-left:14px}
.rt-sub .rt-sa span::before{content:"";position:absolute;left:0;top:50%;width:6px;height:1.5px;background:var(--line2);transform:translateY(-50%)}
.rt-sub .rt-sa:hover,.rt-sli.active>.rt-sa{color:var(--brand)}
.rt-sli.active>.rt-sa span::before,.rt-sub .rt-sa:hover span::before{background:var(--brand)}
/* 三级：默认折叠，当前分支或 .open 展开 */
.rt-thd{list-style:none;max-height:0;overflow:hidden;transition:max-height .3s ease}
.rt-thd:empty{display:none}
.rt-sli.active>.rt-thd,.rt-sli.open>.rt-thd{max-height:700px}
.rt-thd .rt-ta{display:block;padding:10px 24px 10px 56px;font-size:13px;color:var(--muted);border-top:1px dashed var(--line);transition:.18s;cursor:pointer}
.rt-thd .rt-ta:hover,.rt-thd .rt-ta.active{color:var(--brand)}
.inrail-foot{padding:22px 24px;background:var(--mist);border-top:1px solid var(--line)}
.inrail-foot .lb{font-family:var(--ff-mono);font-size:11px;letter-spacing:.1em;color:var(--muted);text-transform:uppercase}
.inrail-foot .tel{font-family:var(--ff-num);font-size:24px;font-weight:700;color:var(--brand);margin-top:6px}
.inbar{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:32px;padding-bottom:18px;border-bottom:2px solid var(--line)}
.inbar h2{font-size:26px;display:flex;align-items:center;gap:14px}
.inbar h2 .idx{font-family:var(--ff-num);font-size:15px;font-weight:700;color:#fff;background:var(--brand);padding:3px 11px;border-radius:4px}
.inbar .cnt{font-family:var(--ff-mono);font-size:12px;color:var(--muted);letter-spacing:.06em}
.subbar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:40px}
.subbar a{padding:11px 22px;font-weight:700;font-size:14px;color:var(--steel);background:var(--white);border:1px solid var(--line);border-radius:100px;transition:.2s}
.subbar a:hover,.subbar a.active{background:var(--brand);color:#fff;border-color:var(--brand)}

/* 产品网格（浅底 spec 卡） */
.prod-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.prod-item{position:relative;background:var(--white);border:1px solid var(--line);border-radius:8px;overflow:hidden;transition:.2s;display:grid;grid-template-columns:200px 1fr;box-shadow:var(--shadow-sm)}
.prod-item:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:var(--brand)}
.prod-item .pic{overflow:hidden;background:var(--mist)}
.prod-item .pic img{width:100%;height:100%;object-fit:cover;transition:transform .5s;aspect-ratio:1/1}
.prod-item:hover .pic img{transform:scale(1.06)}
.prod-item .body{display:flex;flex-direction:column;padding:22px}
.prod-item .body h3{font-size:18px}
.prod-item .body .desc{margin-top:8px;color:var(--muted);font-size:13px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.prod-item .body .foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;padding-top:14px;border-top:1px solid var(--line)}
.prod-item .body .foot .mk{font-family:var(--ff-mono);font-size:11px;letter-spacing:.08em;color:var(--brand);font-weight:700}
.prod-item .pgo{width:36px;height:36px;flex:none;display:grid;place-items:center;border-radius:50%;background:var(--mist);color:var(--steel);transition:.2s}
.prod-item .pgo svg{width:18px;height:18px}
.prod-item:hover .pgo{background:var(--brand);color:#fff}
.prod-item .tagno{position:absolute;top:12px;left:12px;font-family:var(--ff-num);font-size:13px;font-weight:700;color:#fff;background:rgba(28,29,33,.75);padding:3px 10px;border-radius:4px;z-index:2}

/* 文章列表（浅底编号行） */
.artlist{background:var(--white);border:1px solid var(--line);border-radius:8px;overflow:hidden}
.art-row{display:grid;grid-template-columns:80px 1fr 130px;align-items:center;gap:24px;padding:24px 28px;border-bottom:1px solid var(--line);transition:.2s;position:relative}
.art-row:last-child{border-bottom:none}
.art-row .ai{font-family:var(--ff-num);font-size:38px;font-weight:700;color:var(--line2);line-height:1;transition:.2s}
.art-row:hover{background:var(--mist)}
.art-row:hover .ai{color:var(--brand)}
.art-row .ac h3{font-size:19px;line-height:1.3;transition:.2s}
.art-row:hover .ac h3{color:var(--brand)}
.art-row .ac p{margin-top:6px;color:var(--muted);font-size:14px;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.art-row .ad{text-align:right;font-family:var(--ff-mono);font-size:12px;color:var(--muted)}
.art-row .ad time{display:block;font-family:var(--ff-num);font-size:22px;font-weight:700;color:var(--ink)}

/* 案例列表（错位交错 overlay，非等高等宽） */
.case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:32px 34px;align-items:start}
.case-grid .case-item:nth-child(even){margin-top:56px}
.case-grid .case-item:nth-child(4n+1) .cpic,.case-grid .case-item:nth-child(4n) .cpic{aspect-ratio:4/3}
.case-grid .case-item:nth-child(4n+2) .cpic,.case-grid .case-item:nth-child(4n+3) .cpic{aspect-ratio:16/11}
.case-item{position:relative;border-radius:8px;overflow:hidden;display:block;box-shadow:var(--shadow-sm);border:1px solid var(--line)}
.case-item .cpic{aspect-ratio:16/10;overflow:hidden;background:var(--mist)}
.case-item .cpic img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.case-item:hover .cpic img{transform:scale(1.06)}
.case-item .cover{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:flex-end;padding:28px;background:linear-gradient(to top,rgba(28,29,33,.85),transparent 62%);color:#fff}
.case-item .cover time{font-family:var(--ff-mono);font-size:12px;color:#ffb47a}
.case-item .cover h3{font-size:21px;margin-top:8px;color:#fff}
.case-item .cover p{margin-top:8px;color:rgba(255,255,255,.85);font-size:14px;max-height:0;overflow:hidden;opacity:0;transition:.35s}
.case-item:hover .cover p{max-height:80px;opacity:1}
.case-item .cno{position:absolute;top:16px;left:16px;font-family:var(--ff-num);font-size:15px;font-weight:700;color:#fff;background:var(--brand);padding:3px 11px;border-radius:4px}

/* 荣誉资质 */
.honor-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;align-items:start}
.honor-item{background:var(--white);border:1px solid var(--line);border-radius:8px;padding:16px;text-align:center;transition:.2s;display:flex;flex-direction:column;box-shadow:var(--shadow-sm)}
.honor-item:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:var(--brand)}
.honor-item .hp{position:relative;width:100%;height:0;padding-top:72%;overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:4px}
.honor-item .hp img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;padding:6px;display:block}
.honor-item h3{margin-top:14px;font-size:15px;font-weight:700}

/* 分页 */
.pager{margin-top:52px;display:flex;justify-content:center;gap:8px;flex-wrap:wrap}
.pager a,.pager span{display:inline-flex;align-items:center;justify-content:center;min-width:44px;height:44px;padding:0 12px;border:1px solid var(--line);border-radius:6px;font-weight:700;font-family:var(--ff-num);font-size:16px;background:var(--white);transition:.15s}
.pager a[href]:hover{border-color:var(--brand);color:var(--brand)}
.pager a.current,.pager .pageno.active,.pager span.current,.pager .thisclass{background:var(--brand);color:#fff;border-color:var(--brand);cursor:default}
.pager a:not([href]):not(.current){color:var(--muted,#999);background:var(--white);cursor:not-allowed;opacity:.6}

/* 正文 */
.single-body,.article-body{font-size:16px;line-height:1.9;color:#454851}
.single-body img,.article-body img{margin:20px auto;border-radius:6px}
.single-body h2,.article-body h2{font-size:25px;margin:32px 0 16px;padding-left:16px;border-left:4px solid var(--brand)}
.single-body h3,.article-body h3{font-size:20px;margin:24px 0 12px}
.single-body p,.article-body p{margin-bottom:16px}

/* 关于单页：错位图文 + 数据侧栏 */
.about-split{display:grid;grid-template-columns:1fr 290px;gap:44px;align-items:start}
.as-facts{position:sticky;top:30px;display:flex;flex-direction:column;gap:16px}
.asf-item{background:var(--white);border:1px solid var(--line);border-radius:8px;padding:24px 26px;box-shadow:var(--shadow-sm)}
.asf-item .n{font-family:var(--ff-num);font-size:40px;font-weight:700;line-height:1;color:var(--brand)}
.asf-item .n i{font-style:normal;font-size:.5em;vertical-align:super;color:var(--ink)}
.asf-item p{margin-top:6px;font-size:13px;font-weight:700;color:var(--muted)}

/* 时间轴 */
.milestone .ms-line{position:relative;padding-left:30px}
.milestone .ms-line::before{content:"";position:absolute;left:6px;top:8px;bottom:8px;width:2px;background:var(--line2)}
.ms-item{position:relative;padding:0 0 34px 30px}
.ms-item:last-child{padding-bottom:0}
.ms-dot{position:absolute;left:-30px;top:6px;width:14px;height:14px;border-radius:50%;background:var(--brand);border:3px solid var(--paper);box-shadow:0 0 0 2px var(--brand)}
.ms-year{display:block;font-family:var(--ff-num);font-size:32px;font-weight:700;color:var(--brand);line-height:1;margin-bottom:8px}
.ms-item h3{font-size:19px}
.ms-item p{margin-top:6px;color:var(--muted);font-size:15px}

/* 合作伙伴 */
.partner-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.partner-item{background:var(--white);border:1px solid var(--line);border-radius:8px;transition:.2s}
.partner-item:hover{border-color:var(--brand);box-shadow:var(--shadow-sm)}
.partner-item .pp{aspect-ratio:16/9;display:grid;place-items:center;padding:18px}
.partner-item .pp img{max-height:100%;object-fit:contain;filter:grayscale(1);opacity:.7;transition:.2s}
.partner-item:hover .pp img{filter:none;opacity:1}
.partner-item .pt{font-weight:700;color:var(--muted);font-size:14px;text-align:center}

/* 联系页 */
.contact-split{display:grid;grid-template-columns:380px 1fr;gap:0;border:1px solid var(--line);border-radius:8px;overflow:hidden;box-shadow:var(--shadow-sm)}
.cs-info{background:var(--brand);color:#fff;padding:40px 36px;display:flex;flex-direction:column;gap:24px}
.cs-row{display:flex;gap:16px;align-items:center}
.cs-row .ci{width:52px;height:52px;flex:none;display:grid;place-items:center;border-radius:8px;background:rgba(255,255,255,.15);color:#fff}
.cs-row .ci svg{width:24px;height:24px}
.ct-txt .lb{font-family:var(--ff-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:rgba(255,255,255,.8)}
.ct-txt p{font-size:19px;font-weight:800;margin-top:3px;word-break:break-all}
.contact-map{display:flex;align-items:center;gap:12px;margin-top:auto;background:rgba(255,255,255,.14);border-radius:8px;padding:18px 22px;transition:.2s}
.contact-map:hover{background:rgba(255,255,255,.24)}
.contact-map .mh{font-weight:800;font-size:16px}
.contact-map .ms{font-size:13px;color:rgba(255,255,255,.85);margin-top:3px}
.cs-form{padding:40px 36px;background:var(--white)}

/* 表单 */
.fwrap{background:var(--white)}
.fwrap-tit{margin-bottom:24px;padding-bottom:18px;border-bottom:1px solid var(--line)}
.fwrap-tit h3{font-size:22px}
.fwrap-tit p{color:var(--muted);font-size:14px;margin-top:6px}
.frow{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:20px}
.fwrap label{display:block;font-weight:700;font-size:13px;margin-bottom:8px;color:var(--ink)}
.fwrap input,.fwrap textarea{width:100%;border:1px solid var(--line2);border-radius:6px;padding:13px 15px;font-size:15px;background:var(--paper);outline:none;transition:.15s}
.fwrap input:focus,.fwrap textarea:focus{border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px var(--brand-soft)}
.fwrap textarea{min-height:130px;resize:vertical}

/* FAQ 单页 */
.faq-layout{display:grid;grid-template-columns:320px 1fr;gap:48px;align-items:start}
.faq-intro{position:sticky;top:30px}
.faq-intro .fi-en{font-family:var(--ff-num);font-size:60px;font-weight:700;color:var(--brand);line-height:.8}
.faq-intro h2{font-size:clamp(28px,3.2vw,40px);margin:14px 0 16px}
.faq-intro p{color:var(--muted);font-size:15px}
.faq-intro .fi-tel{margin-top:24px;background:var(--brand);color:#fff;border-radius:8px;padding:20px 22px;font-family:var(--ff-num);font-size:26px;font-weight:700}
.faq-intro .fi-tel .lb{display:block;font-family:var(--ff-mono);font-size:11px;letter-spacing:.12em;color:rgba(255,255,255,.85);text-transform:uppercase;margin-bottom:4px}
.faq-layout .faq{max-width:none}

/* 预约单页 */
.order-wrap{max-width:800px;margin:0 auto;background:var(--white);border:1px solid var(--line);border-radius:8px;overflow:hidden;box-shadow:var(--shadow)}
.order-hd{background:var(--brand);color:#fff;padding:38px 40px}
.order-hd .oh-en{font-family:var(--ff-mono);font-size:12px;letter-spacing:.16em;color:rgba(255,255,255,.85);text-transform:uppercase}
.order-hd h2{font-size:30px;color:#fff;margin:8px 0 10px}
.order-hd p{color:rgba(255,255,255,.9);font-size:14px}
.order-wrap .fwrap{padding:40px}

/* 详情页 */
.detail-wrap{display:grid;grid-template-columns:1fr 310px;gap:44px;align-items:start}
.detail-main{background:var(--white);border:1px solid var(--line);border-radius:8px;padding:44px;box-shadow:var(--shadow-sm)}
.detail-main.full{grid-column:1/-1}
.detail-head{border-bottom:1px solid var(--line);padding-bottom:24px;margin-bottom:28px}
.detail-head h1{font-size:clamp(24px,3vw,36px);line-height:1.2}
.detail-meta{display:flex;gap:26px;flex-wrap:wrap;margin-top:16px;font-size:13px;color:var(--muted);font-family:var(--ff-mono)}
.detail-meta span{display:flex;align-items:center;gap:7px}
.detail-meta svg{width:16px;height:16px;color:var(--brand)}
.ai-summary{background:var(--brand-soft);border-radius:8px;padding:22px 24px;margin-bottom:30px;border:1px solid rgba(var(--brand-rgb),.2)}
.ais-tit{display:flex;align-items:center;gap:9px;font-weight:800;font-size:14px;color:var(--brand)}
.ais-tit svg{width:19px;height:19px}
.ais-con{margin-top:10px;color:#454851;font-size:15px;line-height:1.8}
.ais-tip{margin-top:10px;font-size:12px;color:var(--muted);font-family:var(--ff-mono)}
.prenext{margin-top:36px;padding-top:24px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:12px}
.prenext a,.prenext span{color:var(--muted);font-size:14px;transition:.2s;display:flex;gap:10px}
.prenext a:hover{color:var(--brand)}
.pn-label{font-weight:800;color:var(--ink);font-family:var(--ff-mono);font-size:12px;flex:none}
.aside{position:sticky;top:30px;display:flex;flex-direction:column;gap:24px}
.aside-box{background:var(--white);border:1px solid var(--line);border-radius:8px;overflow:hidden;box-shadow:var(--shadow-sm)}
.aside-hd{padding:20px 22px;border-bottom:1px solid var(--line)}
.aside-hd h3{font-size:19px}
.aside-hd .en{font-family:var(--ff-mono);font-size:11px;letter-spacing:.14em;color:var(--brand)}
.aside-news{padding:8px 22px 16px}
.aside-news li{padding:12px 0;border-bottom:1px solid var(--line)}
.aside-news li:last-child{border-bottom:none}
.aside-news li a{font-size:14px;color:var(--muted);transition:.2s;display:block;font-weight:600}
.aside-news li a:hover{color:var(--brand);padding-left:5px}
.aside-contact{background:var(--brand);color:#fff;border-radius:8px;padding:26px 24px}
.aside-contact h3{font-size:14px;font-family:var(--ff-mono);letter-spacing:.08em;color:#fff}
.aside-contact p{font-size:13px;opacity:.9;margin-top:6px}
.aside-contact .ac-tel{font-family:var(--ff-num);font-size:28px;font-weight:700;margin-top:12px}

/* 产品详情 */
.pd-top{display:grid;grid-template-columns:1fr 1fr;gap:44px;margin-bottom:52px}
.pd-main-img{border:1px solid var(--line);border-radius:8px;background:var(--mist);aspect-ratio:4/3;overflow:hidden}
.pd-main-img img{width:100%;height:100%;object-fit:cover}
.pd-thumbs{display:flex;gap:12px;margin-top:14px;flex-wrap:wrap}
.pd-thumbs li{width:80px;height:64px;border:1px solid var(--line);border-radius:4px;overflow:hidden;cursor:pointer;transition:.15s}
.pd-thumbs li.on{border-color:var(--brand)}
.pd-thumbs li img{width:100%;height:100%;object-fit:cover}
.pd-info h1{font-size:clamp(24px,3vw,38px);line-height:1.15}
.pd-brief{margin:24px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:20px 0}
.pb-row{display:flex;gap:8px;font-size:15px;color:var(--muted)}
.pb-row b{color:var(--ink);flex:none}
.pd-acts{display:flex;gap:16px;flex-wrap:wrap}
.pd-body{display:grid;grid-template-columns:1fr 310px;gap:44px;align-items:start}
.sec-tit{font-size:23px;padding-left:16px;border-left:4px solid var(--brand);margin:0 0 24px}
.pd-content .sec-tit:not(:first-child){margin-top:48px}
.pd-params{width:100%;border-collapse:collapse;font-size:15px;margin-bottom:8px;border:1px solid var(--line)}
.pd-params th,.pd-params td{padding:13px 18px;text-align:left;border:1px solid var(--line);line-height:1.7;vertical-align:top}
.pd-params th{width:180px;font-weight:700;color:var(--ink,#222);background:var(--brand-soft);white-space:nowrap}
.pd-params td{color:#454851;background:var(--white)}
.pd-params tr:nth-child(even) td{background:#fafafa}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.srch-tip{margin-bottom:28px;font-size:16px;color:var(--muted)}
.srch-tip b{color:var(--brand)}

/* 视频 */
.gal-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.gal-card{display:block;background:var(--white);border:1px solid var(--line);border-radius:8px;overflow:hidden;transition:.2s;box-shadow:var(--shadow-sm)}
.gal-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.gal-img{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--mist)}
.gal-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.gal-card:hover .gal-img img{transform:scale(1.06)}
.play-ico{position:absolute;inset:0;margin:auto;width:60px;height:60px;border-radius:50%;background:rgba(255,255,255,.92);display:grid;place-items:center;transition:.2s;box-shadow:var(--shadow-sm)}
.play-ico svg{width:26px;height:26px;color:var(--brand);margin-left:3px}
.gal-card:hover .play-ico{background:var(--brand)}
.gal-card:hover .play-ico svg{color:#fff}
.gal-info{padding:18px 22px}
.gal-info h3{font-size:17px}
.mvp-modal{position:fixed;inset:0;z-index:200;display:none;align-items:center;justify-content:center}
.mvp-modal.show{display:flex}
.mvp-mask{position:absolute;inset:0;background:rgba(28,29,33,.9)}
.mvp-box{position:relative;z-index:2;width:min(920px,92vw)}
.mvp-title{color:#fff;font-weight:800;margin-bottom:14px}
.mvp-video{width:100%;border-radius:8px;background:#000;display:block}
.mvp-close{position:absolute;top:-46px;right:0;color:#fff;font-size:40px;line-height:1}

/* 下载 */
.down-list{background:var(--white);border:1px solid var(--line);border-radius:8px;overflow:hidden}
.down-item{display:grid;grid-template-columns:60px 56px 1fr auto;align-items:center;gap:22px;padding:20px 24px;border-bottom:1px solid var(--line);transition:.2s}
.down-item:last-child{border-bottom:none}
.down-item:hover{background:var(--mist)}
.di-no{font-family:var(--ff-num);font-size:30px;font-weight:700;color:var(--line2);text-align:center;transition:.2s}
.down-item:hover .di-no{color:var(--brand)}
.di-ico{width:52px;height:52px;display:grid;place-items:center;border-radius:8px;background:var(--brand-soft);color:var(--brand)}
.di-ico svg{width:26px;height:26px}
.di-name h3{font-size:17px;font-weight:700}
.di-name .mt{font-family:var(--ff-mono);font-size:11px;letter-spacing:.06em;color:var(--muted);margin-top:4px}

/* ===================== 响应式 ===================== */
@media (max-width:1200px){
  .field-grid,.col-grid,.rel-grid,.gal-grid{grid-template-columns:repeat(2,1fr)}
  .honor-grid{grid-template-columns:repeat(3,1fr)}
  .partner-grid{grid-template-columns:repeat(4,1fr)}
  .ft-top{grid-template-columns:1fr 1fr}
  .detail-wrap,.pd-top,.pd-body{grid-template-columns:1fr}
  .aside{position:static}
  .hero-badge{right:24px;bottom:96px;padding:16px 20px}
  .hero-badge .bn{font-size:28px}
}
@media (max-width:960px){
  :root{--nav-w:0px}
  .main{margin-left:0}
  /* 顶部移动条 */
  .mtop{display:flex;align-items:center;justify-content:space-between;padding:0 20px;height:66px;background:var(--white);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:60}
  .m-logo img{height:38px;width:auto}
  .m-toggle{width:44px;height:44px;display:grid;place-items:center;border:1px solid var(--line2);border-radius:6px}
  .m-toggle svg{width:24px;height:24px}
  /* 竖栏变抽屉 */
  .side{transform:translateX(-105%);transition:transform .3s;box-shadow:var(--shadow);width:min(300px,84vw)}
  .side.open{transform:none}
  .side-mask{display:block;position:fixed;inset:0;background:rgba(28,29,33,.5);z-index:55;opacity:0;visibility:hidden;transition:.3s}
  .side-mask.show{opacity:1;visibility:visible}
  /* 二级菜单：移动端折叠，重置 hover 与 transform 泄露 */
  .side-nav .sub,.side-nav>ul>li:hover .sub{max-height:0;overflow:hidden;transition:max-height .3s ease;transform:none}
  .side-nav>ul>li.sub-open .sub{max-height:500px}
  .side-nav>ul>li.sub-open>a .caret{transform:rotate(180deg)}

  .insplit,.about-split,.faq-layout{grid-template-columns:1fr}
  .inrail,.as-facts,.faq-intro{position:static}
  .as-facts{flex-direction:row;flex-wrap:wrap}
  .as-facts .asf-item{flex:1;min-width:140px}
  .contact-split{grid-template-columns:1fr}
  .sec{padding:64px 0}
  .facts ul{grid-template-columns:repeat(2,1fr)}
  .gal-grid,.rel-grid{grid-template-columns:1fr}
  .ctabar .ct{flex-direction:column;align-items:flex-start}
  /* 新版编辑式区块响应式 */
  .shd{grid-template-columns:1fr}
  .shd::before{grid-row:auto;font-size:56px;margin-bottom:-10px}
  .shd .sub{grid-column:1}
  .about-edit .ae-head{grid-template-columns:1fr;gap:20px;align-items:start}
  .ae-over{position:static;max-width:none;border-radius:0}
  .field-row,.field-row:nth-child(even){grid-template-columns:70px 1fr;gap:20px 24px}
  .field-row .fpic,.field-row:nth-child(even) .fpic{order:0;grid-column:1/-1}
  .field-row .fmid,.field-row:nth-child(even) .fmid{order:0;grid-column:2}
  .field-row .fno,.field-row:nth-child(even) .fno{order:0;text-align:left}
  .news-mag{grid-template-columns:1fr;gap:32px}
  .case-scroll{padding:6px 18px 20px;margin:0 -18px}
  .case-grid{grid-template-columns:1fr}
  .case-grid .case-item:nth-child(even){margin-top:0}
}
@media (max-width:640px){
  .ct{padding:0 18px}
  .field-grid,.prod-grid,.case-grid{grid-template-columns:1fr}
  .prod-item{grid-template-columns:130px 1fr}
  .honor-grid,.partner-grid{grid-template-columns:repeat(2,1fr)}
  .ft-top{grid-template-columns:1fr 1fr;gap:28px 24px;padding:48px 0 36px}
  .ft-brand{grid-column:1 / -1}
  .ft-top .ft-col:last-child{grid-column:1 / -1}
  .news-row{grid-template-columns:70px 1fr;gap:16px}
  .news-row .na{display:none}
  .art-row{grid-template-columns:56px 1fr;gap:14px}
  .art-row .ad{display:none}
  .frow{grid-template-columns:1fr}
  .pd-params th{width:110px;padding:11px 12px}
  .pd-params td{padding:11px 12px}
  .detail-main{padding:24px}
  .ihead .ct{padding:48px 18px 40px}
  .hero-left{padding:48px 0;max-width:100%}
  .hero-scrim{background:linear-gradient(180deg,rgba(255,255,255,.95) 0%,rgba(255,255,255,.85) 45%,rgba(255,255,255,.6) 100%)}
  .flinks .ct{flex-direction:column;gap:16px}
  .down-item{grid-template-columns:1fr;text-align:left;gap:14px}
}