/* ============================================================
   都图科技 DOUTOO · 官网样式表
   品牌配色：靛紫 #4640A8 / 亮紫 #6C64D6 / 淡紫 #E4E2FA
             墨黑 #252233 / 朱红 #A6332E / 宣白 #FBFAF7
   零外部依赖 · 零图片请求 · 系统字体
   ============================================================ */

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

:root{
  --ink:#252233;
  --ink2:#5C5872;
  --ink3:#8B8798;
  --accent:#4640A8;
  --accent2:#6C64D6;
  --accent-soft:#EFEEFC;
  --lilac:#E4E2FA;
  --paper:#FBFAF7;
  --bg:#F4F2ED;
  --line:#E5E2DA;
  --seal:#A6332E;
  --dark:#14122B;
  --dark2:#1E1B3A;
  --head:#21188F;
  --head-d:#191071;
  --head-l:#2A20A8;
  --sans:"Microsoft YaHei","PingFang SC","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --serif:"Songti SC",SimSun,Georgia,"Times New Roman",serif;
  --hd:70px;
  --sh-sm:0 2px 8px rgba(37,34,51,.05);
  --sh-md:0 10px 30px rgba(37,34,51,.08);
  --sh-lg:0 20px 56px rgba(37,34,51,.14);
}

html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:var(--paper);color:var(--ink);
  font-family:var(--sans);font-size:15px;line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img,svg{display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{list-style:none;padding:0}
::selection{background:var(--lilac);color:var(--accent)}
:focus-visible{outline:2px solid var(--accent2);outline-offset:3px;border-radius:4px}

.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
.serif{font-family:var(--serif)}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ===== 页头 ===== */
.hdr{
  position:fixed;top:0;left:0;right:0;z-index:60;
  color:#fff;background:transparent;
  transition:background .35s,color .35s,box-shadow .35s,border-color .35s;
  border-bottom:1px solid transparent;
}
.hdr.solid{
  background:rgba(251,250,247,.9);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  backdrop-filter:saturate(180%) blur(14px);
  color:var(--ink);border-bottom-color:var(--line);
}
.hdr-in{display:flex;align-items:center;justify-content:space-between;height:var(--hd)}

.brand{display:flex;align-items:center;gap:11px;flex:none}
.brand .mark{width:36px;height:36px;flex:none;border-radius:9px}
.brand-txt{display:flex;flex-direction:column;line-height:1.15}
.brand-cn{font-size:16px;font-weight:600;letter-spacing:2px}
.brand-en{font-size:9px;letter-spacing:1.6px;opacity:.62;font-weight:600}

.nav{display:flex;align-items:center;gap:2px}
.nav a{display:block}
.nav-lv1{
  position:relative;padding:9px 15px;border-radius:8px;
  font-size:14.5px;letter-spacing:.5px;transition:background .25s,color .25s;
}
.nav-lv1:hover{background:rgba(108,100,214,.14)}
.hdr.solid .nav-lv1:hover{background:var(--accent-soft);color:var(--accent)}
.nav-lv1.active{color:var(--accent2);font-weight:600}
.hdr.solid .nav-lv1.active{color:var(--accent)}

.nav-item{position:relative}
.sub{
  position:absolute;top:calc(100% + 6px);left:50%;
  transform:translate(-50%,8px);
  min-width:172px;padding:8px;
  background:#fff;border:1px solid var(--line);border-radius:12px;
  box-shadow:var(--sh-md);
  opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity .24s,transform .24s,visibility .24s;
}
.nav-item:hover .sub,
.nav-item:focus-within .sub{opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,0)}
.sub a{
  padding:9px 13px;border-radius:8px;font-size:13.5px;
  color:var(--ink2);letter-spacing:.3px;
  transition:background .2s,color .2s;
}
.sub a:hover{background:var(--accent-soft);color:var(--accent)}
.sub::before{content:"";position:absolute;top:-7px;left:0;right:0;height:8px}

.menu-btn{display:none;width:42px;height:42px;align-items:center;justify-content:center;border-radius:9px}
.menu-btn span{position:relative;display:block;width:20px;height:1.6px;background:currentColor;transition:transform .3s,background .2s}
.menu-btn span::before,.menu-btn span::after{
  content:"";position:absolute;left:0;width:20px;height:1.6px;background:currentColor;transition:transform .3s,opacity .25s;
}
.menu-btn span::before{top:-6px}
.menu-btn span::after{top:6px}
.menu-btn[aria-expanded="true"] span{background:transparent}
.menu-btn[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg)}
.menu-btn[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg)}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;gap:9px;
  padding:13px 27px;border-radius:9px;
  font-size:14.5px;letter-spacing:.8px;font-weight:500;
  transition:transform .25s,background .25s,color .25s,border-color .25s,box-shadow .25s;
  will-change:transform;
}
.btn-p{background:var(--accent);color:#fff;box-shadow:0 8px 22px rgba(70,64,168,.28)}
.btn-p:hover{background:var(--accent2);transform:translateY(-2px);box-shadow:0 12px 30px rgba(70,64,168,.36)}
.btn-g{border:1px solid rgba(255,255,255,.34);color:#fff}
.btn-g:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.62);transform:translateY(-2px)}
.btn-o{border:1px solid var(--line);color:var(--ink2)}
.btn-o:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
.btn svg{width:15px;height:15px;flex:none}

/* ===== 首页 Hero 轮播 ===== */
.hero{
  position:relative;background:var(--dark);color:#fff;
  height:clamp(540px,86vh,800px);
  overflow:hidden;
}
.slide{
  position:absolute;inset:0;
  display:flex;align-items:center;
  opacity:0;visibility:hidden;
  transition:opacity 1s ease,visibility 1s;
}
.slide.on{opacity:1;visibility:visible}
.slide-bg{position:absolute;inset:0;overflow:hidden}
.s1{
  background:
    radial-gradient(1100px 620px at 76% 14%,rgba(108,100,214,.5),transparent 62%),
    radial-gradient(820px 520px at 8% 92%,rgba(70,64,168,.55),transparent 64%),
    linear-gradient(140deg,#14122B 0%,#1E1B3A 52%,#171533 100%);
}
.s2{
  background:
    radial-gradient(900px 560px at 22% 20%,rgba(70,64,168,.55),transparent 60%),
    radial-gradient(760px 520px at 92% 84%,rgba(108,100,214,.34),transparent 62%),
    linear-gradient(120deg,#161430 0%,#201D40 58%,#121026 100%);
}
.s3{
  background:
    radial-gradient(1000px 600px at 84% 26%,rgba(108,100,214,.42),transparent 62%),
    radial-gradient(700px 460px at 14% 78%,rgba(166,51,46,.16),transparent 66%),
    linear-gradient(150deg,#131127 0%,#1B1936 55%,#16142C 100%);
}
.grid-ov{
  position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(255,255,255,.05) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:58px 58px;
}
.grid-ov::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 50% 45%,transparent 38%,rgba(20,18,43,.72) 100%);
}
.topo{position:absolute;inset:0;width:100%;height:100%;opacity:.5;pointer-events:none}
.slide-in{position:relative;width:100%}
.hero-label{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12px;letter-spacing:2.6px;color:rgba(255,255,255,.72);
  margin-bottom:24px;
}
.hero-label::before{content:"";width:26px;height:1px;background:var(--accent2)}
.hero h1{
  font-family:var(--serif);font-weight:400;
  font-size:clamp(30px,4.5vw,54px);line-height:1.34;letter-spacing:3px;
  max-width:900px;
}
.hero h1 em{font-style:normal;color:#A79FF2;white-space:nowrap}
.hero-sub{
  margin-top:24px;font-size:clamp(14px,1.35vw,16.5px);
  color:rgba(255,255,255,.7);letter-spacing:1.4px;max-width:600px;
}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;margin-top:40px}

.hero-ctrl{
  position:absolute;left:0;right:0;bottom:34px;z-index:5;
}
.hero-ctrl .wrap{display:flex;align-items:center;justify-content:space-between;gap:20px}
.dots{display:flex;gap:10px}
.dot{
  width:34px;height:3px;border-radius:2px;
  background:rgba(255,255,255,.26);
  transition:background .35s,width .35s;
}
.dot.on{background:var(--accent2);width:52px}
.arrows{display:flex;gap:10px}
.arrow{
  width:42px;height:42px;border-radius:50%;
  border:1px solid rgba(255,255,255,.25);
  display:flex;align-items:center;justify-content:center;
  transition:background .25s,border-color .25s,transform .25s;
}
.arrow:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.5);transform:scale(1.06)}
.arrow svg{width:15px;height:15px}

/* ===== 通用区块 ===== */
.sec{padding:84px 0}
.sec.alt{background:var(--bg)}
.sec.dark{background:var(--dark);color:#fff}
.sec-head{max-width:720px;margin-bottom:46px}
.sec-num{
  display:inline-block;font-size:12px;letter-spacing:2.4px;
  color:var(--accent);font-weight:600;margin-bottom:14px;
}
.sec.dark .sec-num{color:var(--accent2)}
.sec-title{
  font-family:var(--serif);font-weight:400;
  font-size:clamp(24px,2.9vw,34px);line-height:1.4;letter-spacing:2px;
}
.sec-desc{margin-top:16px;color:var(--ink2);font-size:15px;max-width:640px}
.sec.dark .sec-desc{color:rgba(255,255,255,.66)}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head.center .sec-desc{margin-left:auto;margin-right:auto}
.sec-more{margin-top:44px;text-align:center}

/* ===== 服务卡片 ===== */
.svc-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.svc{
  position:relative;display:block;
  background:#fff;border:1px solid var(--line);border-radius:15px;
  padding:32px 26px 30px;
  transition:transform .35s cubic-bezier(.2,.7,.3,1),box-shadow .35s,border-color .35s;
  will-change:transform;
}
.svc:hover{transform:translateY(-7px);box-shadow:var(--sh-md);border-color:var(--lilac)}
.svc-ico{
  width:48px;height:48px;border-radius:12px;
  background:var(--accent-soft);color:var(--accent);
  display:flex;align-items:center;justify-content:center;
  margin-bottom:22px;transition:background .35s,color .35s,transform .35s;
}
.svc:hover .svc-ico{background:var(--accent);color:#fff;transform:scale(1.05)}
.svc-ico svg{width:23px;height:23px}
.svc-t{font-size:18.5px;font-weight:600;letter-spacing:1px;margin-bottom:7px}
.svc-en{font-size:10.5px;letter-spacing:1.8px;color:var(--ink3);text-transform:uppercase;margin-bottom:15px;font-weight:600}
.svc-d{font-size:13.5px;color:var(--ink2);line-height:1.8}
.svc-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:18px}
.tag{
  font-size:12px;padding:4px 10px;border-radius:20px;
  background:var(--accent-soft);color:var(--accent);letter-spacing:.3px;
}
.svc-arw{
  position:absolute;top:30px;right:24px;color:var(--ink3);
  opacity:0;transform:translateX(-6px);
  transition:opacity .3s,transform .3s,color .3s;
}
.svc:hover .svc-arw{opacity:1;transform:none;color:var(--accent)}
.svc-arw svg{width:16px;height:16px}

/* ===== 动态列表 ===== */
.news-wrap{display:grid;grid-template-columns:1fr 320px;gap:56px;align-items:start}
.news-list{border-top:1px solid var(--line)}
.news-item{
  display:flex;align-items:flex-start;gap:26px;
  padding:24px 4px;border-bottom:1px solid var(--line);
  transition:background .3s,padding .3s;
}
.news-item:hover{background:rgba(108,100,214,.04);padding-left:14px;padding-right:14px}
.news-date{
  flex:none;width:78px;padding-top:3px;
  font-size:12.5px;color:var(--ink3);letter-spacing:.5px;
  font-variant-numeric:tabular-nums;
}
.news-body{flex:1;min-width:0}
.news-k{
  display:inline-block;font-size:11.5px;padding:2px 9px;border-radius:4px;
  background:var(--accent-soft);color:var(--accent);margin-bottom:9px;letter-spacing:.5px;
}
.news-t{font-size:16px;font-weight:500;letter-spacing:.4px;line-height:1.6;transition:color .25s}
.news-item:hover .news-t{color:var(--accent)}
.news-x{font-size:13.5px;color:var(--ink2);margin-top:7px;line-height:1.75}
.news-arw{flex:none;padding-top:6px;color:var(--ink3);transition:transform .3s,color .3s}
.news-item:hover .news-arw{transform:translateX(4px);color:var(--accent)}
.news-arw svg{width:16px;height:16px}

.side-card{
  background:#fff;border:1px solid var(--line);border-radius:15px;
  padding:30px 26px;position:sticky;top:94px;
}
.side-card h3{font-size:17px;font-weight:600;letter-spacing:1px;margin-bottom:10px}
.side-card p{font-size:13.5px;color:var(--ink2);margin-bottom:22px;line-height:1.8}
.side-list{border-top:1px solid var(--line);margin-top:22px;padding-top:18px}
.side-list a{
  display:flex;justify-content:space-between;gap:10px;
  padding:11px 0;font-size:13.5px;color:var(--ink2);
  border-bottom:1px solid var(--line);transition:color .25s,padding .25s;
}
.side-list a:last-child{border-bottom:none}
.side-list a:hover{color:var(--accent);padding-left:6px}
.side-list span{color:var(--ink3);font-size:12.5px;font-variant-numeric:tabular-nums}

/* ===== 数据条 ===== */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:15px;overflow:hidden}
.stat{background:var(--paper);padding:34px 24px;text-align:center}
.stat-n{font-family:var(--serif);font-size:38px;line-height:1.1;color:var(--accent);letter-spacing:1px}
.stat-n small{font-size:19px;margin-left:2px}
.stat-l{font-size:13px;color:var(--ink2);margin-top:11px;letter-spacing:.6px}

/* ===== 内页头图 ===== */
.ph{
  position:relative;background:var(--head);color:#fff;
  padding:calc(var(--hd) + 74px) 0 72px;overflow:hidden;
}
.ph-in{position:relative}
.ph-crumb{font-size:12.5px;color:rgba(255,255,255,.6);letter-spacing:1px;margin-bottom:20px}
.ph-crumb a{transition:color .25s}
.ph-crumb a:hover{color:#fff}
.ph-crumb i{font-style:normal;margin:0 8px;opacity:.45}
.ph h1{font-family:var(--serif);font-weight:400;font-size:clamp(27px,3.4vw,40px);letter-spacing:3px;line-height:1.4}
.ph-desc{margin-top:18px;color:rgba(255,255,255,.66);font-size:15px;max-width:660px;letter-spacing:.4px}

/* ===== 二级导航条 ===== */
section[id],div[id]{scroll-margin-top:calc(var(--hd) + 74px)}
.subtabs{
  position:sticky;top:var(--hd);z-index:40;
  background:rgba(251,250,247,.94);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
}
.subtabs-in{display:flex;gap:6px;overflow-x:auto;padding:12px 0;-ms-overflow-style:none;scrollbar-width:none}
.subtabs-in::-webkit-scrollbar{display:none}
.subtabs a{
  flex:none;padding:8px 16px;border-radius:8px;font-size:14px;
  color:var(--ink2);white-space:nowrap;
  transition:background .25s,color .25s;
}
.subtabs a:hover{background:var(--accent-soft);color:var(--accent)}

/* ===== 事业部区块 ===== */
.div-block{display:grid;grid-template-columns:300px 1fr;gap:56px;align-items:start}
.div-aside{position:sticky;top:94px}
.div-badge{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12px;letter-spacing:2px;color:var(--accent);font-weight:600;
  margin-bottom:16px;
}
.div-badge::before{content:"";width:20px;height:1px;background:var(--accent)}
.div-t{font-family:var(--serif);font-size:27px;font-weight:400;letter-spacing:2px;line-height:1.45}
.div-en{font-size:11px;letter-spacing:2.2px;color:var(--ink3);text-transform:uppercase;margin-top:10px;font-weight:600}
.div-d{font-size:14px;color:var(--ink2);margin-top:20px;line-height:1.85}
.feat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.feat{
  background:#fff;border:1px solid var(--line);border-radius:13px;
  padding:26px 24px;transition:transform .3s,border-color .3s,box-shadow .3s;
}
.feat:hover{transform:translateY(-5px);border-color:var(--lilac);box-shadow:var(--sh-sm)}
.feat-h{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.feat-ico{
  width:34px;height:34px;border-radius:9px;flex:none;
  background:var(--accent-soft);color:var(--accent);
  display:flex;align-items:center;justify-content:center;
}
.feat-ico svg{width:17px;height:17px}
.feat-t{font-size:16px;font-weight:600;letter-spacing:.6px}
.feat-d{font-size:13.5px;color:var(--ink2);line-height:1.8}
.feat-pts{margin-top:14px;display:flex;flex-wrap:wrap;gap:7px}

/* ===== 解决方案卡 ===== */
.sol-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.sol{
  position:relative;overflow:hidden;
  background:#fff;border:1px solid var(--line);border-radius:15px;
  padding:34px 30px;
  transition:transform .35s,border-color .35s,box-shadow .35s;
}
.sol:hover{transform:translateY(-6px);border-color:var(--lilac);box-shadow:var(--sh-md)}
.sol-idx{
  position:absolute;top:22px;right:26px;
  font-family:var(--serif);font-size:44px;color:var(--accent-soft);
  line-height:1;letter-spacing:2px;user-select:none;
}
.sol-t{font-size:19px;font-weight:600;letter-spacing:1px;margin-bottom:6px}
.sol-en{font-size:10.5px;letter-spacing:1.9px;color:var(--ink3);text-transform:uppercase;font-weight:600;margin-bottom:16px}
.sol-d{font-size:13.8px;color:var(--ink2);line-height:1.85;max-width:92%}
.sol-scene{margin-top:20px;padding-top:18px;border-top:1px solid var(--line);font-size:12.8px;color:var(--ink3)}
.sol-scene strong{color:var(--accent);font-weight:600}

/* ===== 文章 / 知识列表 ===== */
.art-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.art{
  display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line);border-radius:15px;
  padding:30px 26px;
  transition:transform .35s,border-color .35s,box-shadow .35s;
}
.art:hover{transform:translateY(-6px);border-color:var(--lilac);box-shadow:var(--sh-md)}
.art-cat{font-size:11.5px;letter-spacing:1.4px;color:var(--accent);font-weight:600;margin-bottom:14px}
.art-t{font-size:16.5px;font-weight:600;line-height:1.6;letter-spacing:.4px;margin-bottom:12px}
.art-d{font-size:13.5px;color:var(--ink2);line-height:1.8;flex:1}
.art-m{
  margin-top:20px;padding-top:16px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--ink3);
}

/* ===== 价值观卡 ===== */
.val-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.val{
  position:relative;background:#fff;border:1px solid var(--line);
  border-radius:15px;padding:34px 30px;
  transition:transform .35s,border-color .35s,box-shadow .35s;
}
.val:hover{transform:translateY(-5px);border-color:var(--lilac);box-shadow:var(--sh-sm)}
.val-tag{font-size:11.5px;letter-spacing:1.6px;color:var(--ink3);margin-bottom:14px}
.val-k{font-family:var(--serif);font-size:30px;letter-spacing:6px;line-height:1.2}
.val-en{font-size:11px;letter-spacing:2px;color:var(--accent);text-transform:uppercase;font-weight:600;margin:9px 0 18px}
.val-d{font-size:14px;color:var(--ink2);line-height:1.85}

/* ===== 信息 / 联系 ===== */
.info-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.info{
  background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:30px 26px;transition:transform .3s,border-color .3s;
}
.info:hover{transform:translateY(-5px);border-color:var(--lilac)}
.info-l{font-size:12px;letter-spacing:1.8px;color:var(--ink3);margin-bottom:13px;text-transform:uppercase}
.info-v{font-size:15.5px;font-weight:500;line-height:1.7;word-break:break-all}
.info-v small{display:block;font-size:12.8px;color:var(--ink3);font-weight:400;margin-top:6px}

.prose{max-width:820px}
.prose p{font-size:15px;color:var(--ink2);line-height:1.95;margin-bottom:20px}
.prose strong{color:var(--ink);font-weight:600}
.prose h3{font-family:var(--serif);font-size:21px;font-weight:400;letter-spacing:1.5px;margin:34px 0 16px;color:var(--ink)}
.quote-box{
  background:var(--accent-soft);border-radius:14px;padding:30px 32px;margin:28px 0;
}
.quote-box p{color:#2F2B5C;font-size:15px;margin-bottom:14px}
.quote-box p:last-child{margin-bottom:0}

/* ===== 页尾 ===== */
.ft{background:var(--dark);color:rgba(255,255,255,.62);padding:64px 0 0;font-size:13.5px}
.ft-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:48px}
.ft-brand{display:flex;align-items:center;gap:11px;margin-bottom:20px;color:#fff}
.ft-brand .mark{width:34px;height:34px;border-radius:8px}
.ft-brand-cn{font-size:16px;font-weight:600;letter-spacing:2px}
.ft-brand-en{font-size:9px;letter-spacing:3px;opacity:.6;font-weight:600}
.ft-about{line-height:1.9;max-width:320px;font-size:13px}
.ft-h{color:#fff;font-size:14px;font-weight:600;letter-spacing:1.4px;margin-bottom:20px}
.ft-links a{display:block;padding:7px 0;transition:color .25s,transform .25s}
.ft-links a:hover{color:#fff;transform:translateX(4px)}
.ft-contact div{padding:7px 0;line-height:1.7}
.ft-contact span{color:rgba(255,255,255,.42);margin-right:8px}
.ft-bar{
  border-top:1px solid rgba(255,255,255,.1);
  padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;
  align-items:center;justify-content:space-between;
  font-size:12.5px;color:rgba(255,255,255,.42);letter-spacing:.4px;
}
.ft-bar a:hover{color:#fff}
.ft-icp{text-decoration:underline;text-underline-offset:2px;text-decoration-color:rgba(255,255,255,.22);text-decoration-thickness:1px;transition:color .25s,text-decoration-color .25s;white-space:nowrap}
.ft-icp:hover{text-decoration-color:currentColor}

/* ===== 客服浮窗 ===== */
.cs{position:fixed;right:24px;bottom:26px;z-index:90}
.cs-btn{
  position:relative;width:56px;height:56px;border-radius:50%;
  background:var(--accent);color:#fff;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 28px rgba(70,64,168,.36);
  transition:transform .3s,background .3s,box-shadow .3s;
}
.cs-btn:hover{transform:scale(1.07);background:var(--accent2)}
.cs-btn svg{width:25px;height:25px}
.cs-btn::after{
  content:"";position:absolute;inset:0;border-radius:50%;
  border:1.5px solid var(--accent2);opacity:0;
  animation:csPulse 2.6s ease-out infinite;
}
@keyframes csPulse{
  0%{transform:scale(1);opacity:.55}
  70%{transform:scale(1.42);opacity:0}
  100%{opacity:0}
}
.cs-panel{
  position:absolute;right:0;bottom:72px;width:282px;
  background:#fff;border:1px solid var(--line);border-radius:17px;
  box-shadow:var(--sh-lg);padding:24px;
  transform-origin:bottom right;
  opacity:0;visibility:hidden;pointer-events:none;
  transform:translateY(12px) scale(.95);
  transition:opacity .3s,transform .3s,visibility .3s;
}
.cs.open .cs-panel{opacity:1;visibility:visible;pointer-events:auto;transform:none}
.cs-hd{display:flex;align-items:center;justify-content:space-between;margin-bottom:4px}
.cs-hd b{font-size:15.5px;letter-spacing:1px}
.cs-close{width:26px;height:26px;border-radius:7px;display:flex;align-items:center;justify-content:center;color:var(--ink3);transition:background .25s,color .25s}
.cs-close:hover{background:var(--bg);color:var(--ink)}
.cs-close svg{width:13px;height:13px}
.cs-hint{font-size:12.5px;color:var(--ink3);margin-bottom:16px}
.cs-qr{
  width:100%;aspect-ratio:1/1;max-width:186px;margin:0 auto;
  border:1px solid var(--line);border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:var(--paper);overflow:hidden;position:relative;
}
.cs-qr svg,.cs-qr img{width:100%;height:100%;display:block;object-fit:contain}
.cs-qr-cap{text-align:center;font-size:12.5px;color:var(--ink3);margin-top:11px}
.cs-rows{margin-top:18px;padding-top:16px;border-top:1px solid var(--line)}
.cs-row{
  display:flex;align-items:center;gap:11px;
  padding:9px 0;font-size:13.8px;color:var(--ink2);
  transition:color .25s;
}
.cs-row:hover{color:var(--accent)}
.cs-row svg{width:17px;height:17px;flex:none;color:var(--accent)}
.cs-row b{color:var(--ink);font-weight:600;letter-spacing:.4px}

/* ===== 滚动动效 ===== */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .75s cubic-bezier(.2,.7,.3,1),transform .75s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.08s}
.reveal.d2{transition-delay:.16s}
.reveal.d3{transition-delay:.24s}
.reveal.d4{transition-delay:.32s}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .cs-btn::after{animation:none}
  .slide{transition:opacity .2s}
}

/* ===== 响应式 ===== */
@media(max-width:1080px){
  .svc-grid{grid-template-columns:repeat(2,1fr)}
  .ft-grid{grid-template-columns:1fr 1fr;gap:34px}
  .news-wrap{grid-template-columns:1fr;gap:40px}
  .side-card{position:static}
  .art-grid{grid-template-columns:repeat(2,1fr)}
  .div-block{grid-template-columns:1fr;gap:32px}
  .div-aside{position:static}
}
@media(max-width:980px){
  .menu-btn{display:flex}
  .nav{
    position:fixed;top:var(--hd);left:0;right:0;
    max-height:calc(100vh - var(--hd));overflow-y:auto;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--paper);border-bottom:1px solid var(--line);
    padding:14px 24px 28px;
    box-shadow:var(--sh-md);
    opacity:0;visibility:hidden;transform:translateY(-10px);
    pointer-events:none;
    transition:opacity .3s,transform .3s,visibility .3s;
  }
  .nav.open{opacity:1;visibility:visible;transform:none;pointer-events:auto}
  /* 收起时子菜单必须一并不可见、不可点，否则会盖在内容上截走点击 */
  .nav:not(.open) .sub{visibility:hidden;opacity:0;pointer-events:none}
  .nav-lv1{padding:13px 4px;font-size:16px;border-bottom:1px solid var(--line);border-radius:0}
  .nav-lv1:hover{background:transparent}
  .hdr.solid .nav-lv1:hover{background:transparent}
  .nav-item{position:static}
  .sub{
    position:static;transform:none;opacity:1;pointer-events:auto;
    box-shadow:none;border:none;border-radius:0;padding:0 0 8px 14px;min-width:0;
    background:transparent;
  }
  .nav.open .sub{visibility:visible}
  .sub::before{display:none}
  .sub a{padding:8px 0;font-size:14px}
  .ft-grid{grid-template-columns:1fr;gap:32px}
  .ft-about{max-width:none}
}
@media(max-width:720px){
  .wrap{padding:0 18px}
  .sec{padding:60px 0}
  .sec-head{margin-bottom:34px}
  .svc-grid,.feat-grid,.sol-grid,.val-grid,.info-grid,.art-grid{grid-template-columns:1fr}
  .subtabs-in{flex-wrap:wrap;overflow:visible;row-gap:4px;padding:10px 0}
  .subtabs a{padding:7px 13px;font-size:13.5px}
  section[id],div[id]{scroll-margin-top:calc(var(--hd) + 122px)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .hero{height:auto;min-height:600px}
  .hero-btns{gap:10px}
  .btn{padding:12px 22px;font-size:14px;flex:1 1 auto;justify-content:center}
  .hero-ctrl{bottom:26px}
  .hero-ctrl .wrap{flex-direction:column-reverse;align-items:flex-start;gap:14px}
  .news-item{flex-direction:column;gap:10px;padding:20px 4px}
  .news-date{width:auto;padding-top:0}
  .news-arw{display:none}
  .cs{right:16px;bottom:18px}
  .cs-panel{width:calc(100vw - 32px);max-width:300px}
  .sol-idx{font-size:36px;top:18px;right:20px}
  .stat-n{font-size:31px}
  .ph{padding:calc(var(--hd) + 52px) 0 52px}
}
@media(max-width:420px){
  .brand-en{display:none}
  .stats{grid-template-columns:1fr}
}

/* ===== 企业动态：搜索 + 加载更多 ===== */
.news-toolbar{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:26px;flex-wrap:wrap}
.news-search{position:relative;flex:1;min-width:220px;max-width:420px}
.news-search svg{position:absolute;left:14px;top:50%;transform:translateY(-50%);width:16px;height:16px;color:var(--ink3);pointer-events:none}
.news-search input{width:100%;padding:11px 16px 11px 42px;border:1px solid var(--line);border-radius:10px;background:#fff;font-size:14px;color:var(--ink);letter-spacing:.4px;outline:none;transition:border-color .25s,box-shadow .25s;-webkit-appearance:none}
.news-search input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.news-count{font-size:12.5px;color:var(--ink3);letter-spacing:1px;flex:none}
.news-item[hidden]{display:none}
.news-empty{padding:52px 0;text-align:center;color:var(--ink3);font-size:14px;letter-spacing:1px}
.news-t mark,.news-x mark{background:var(--accent-soft);color:var(--accent);border-radius:3px;padding:0 2px}
@media (max-width:720px){.news-search{max-width:none}}

/* ===== 技术知识：搜索 + 分页 ===== */
.art[hidden]{display:none}
.page-nav{display:flex;align-items:center;justify-content:center;gap:10px;margin-top:44px}
.pg-nums{display:flex;gap:8px}
.page-nav button{min-width:40px;height:40px;padding:0 14px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink2);font-size:14px;letter-spacing:1px;cursor:pointer;transition:border-color .25s,color .25s,background .25s}
.page-nav button:hover:not(:disabled):not(.on){border-color:var(--accent);color:var(--accent)}
.page-nav button.on{background:var(--accent);border-color:var(--accent);color:#fff}
.page-nav button:disabled{opacity:.35;cursor:default}
.art-t mark,.art-d mark{background:var(--accent-soft);color:var(--accent);border-radius:3px;padding:0 2px}
/* 移动端：隐藏分页按钮，改为向下滚动连续读取 */
.art-sent{display:none}
@media (max-width:720px){
  .page-nav{display:none}
  .art-sent{display:block;padding:18px 0 6px;text-align:center;color:var(--ink3);font-size:13px;letter-spacing:1px}
  .art-sent.is-loading::before{content:"";display:block;width:22px;height:22px;margin:0 auto 9px;border:2px solid var(--lilac);border-top-color:var(--accent);border-radius:50%;animation:artSpin .9s linear infinite}
}
@keyframes artSpin{to{transform:rotate(360deg)}}
@media (prefers-reduced-motion:reduce){.art-sent.is-loading::before{animation:none}}
/* ===== 移动端隐藏页尾导航栏 ===== */
@media(max-width:720px){.ft-nav-col{display:none}}

/* ===== 文章详情页（技术知识三级页） ===== */
.ph-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;margin-top:22px;font-size:13px;color:rgba(255,255,255,.6);letter-spacing:.8px}
.ph-meta b{color:#fff;font-weight:500}
.ph-meta i{font-style:normal;opacity:.32}
.ph-tag{display:inline-block;padding:4px 13px;border:1px solid rgba(255,255,255,.24);border-radius:20px;font-size:12px;color:#C9C4F5;letter-spacing:1.2px}

.post-wrap{display:grid;grid-template-columns:minmax(0,1fr) 286px;gap:56px;align-items:start}
.post{min-width:0;max-width:820px}
.post-lead{font-size:16px;color:var(--ink2);line-height:2.02;padding:2px 0 2px 20px;border-left:3px solid var(--accent);margin-bottom:44px}
.post h2{position:relative;font-family:var(--serif);font-weight:400;font-size:22px;letter-spacing:1.6px;line-height:1.55;margin:48px 0 20px;padding-left:16px}
.post h2::before{content:"";position:absolute;left:0;top:.48em;width:4px;height:15px;background:var(--accent);border-radius:2px}
.post h2:first-child{margin-top:0}
.post h3{font-size:16px;font-weight:600;letter-spacing:.6px;margin:30px 0 12px}
.post p{margin-bottom:18px;font-size:15px;color:var(--ink2);line-height:1.98}
.post strong,.post b{color:var(--ink);font-weight:600}
.post ul{margin:0 0 22px}
.post ul li{position:relative;padding-left:19px;margin-bottom:11px;font-size:14.6px;color:var(--ink2);line-height:1.92}
.post ul li::before{content:"";position:absolute;left:2px;top:.78em;width:5px;height:5px;border-radius:50%;background:var(--accent2)}
.post ol{counter-reset:po;margin:0 0 22px;padding:0}
.post ol li{position:relative;padding-left:31px;margin-bottom:12px;font-size:14.6px;color:var(--ink2);line-height:1.92}
.post ol li::before{counter-increment:po;content:counter(po);position:absolute;left:0;top:.26em;width:19px;height:19px;border-radius:6px;background:var(--accent-soft);color:var(--accent);font-size:11.5px;font-weight:700;display:flex;align-items:center;justify-content:center}
.post-tb{width:100%;border-collapse:collapse;margin:2px 0 26px;font-size:13.6px}
.post-tb th{background:var(--accent-soft);color:var(--accent);font-weight:600;text-align:left;padding:11px 14px;white-space:nowrap}
.post-tb th:first-child{border-radius:8px 0 0 0}
.post-tb th:last-child{border-radius:0 8px 0 0}
.post-tb td{padding:11px 14px;border-bottom:1px solid var(--line);color:var(--ink2);vertical-align:top;line-height:1.8}
.post-tb tbody tr:last-child td{border-bottom:0}
.post .tip{background:#fff;border:1px solid var(--line);border-left:3px solid var(--accent2);border-radius:0 12px 12px 0;padding:18px 22px;margin:28px 0}
.post .tip b{display:block;font-size:12px;letter-spacing:1.6px;color:var(--accent);margin-bottom:9px}
.post .tip p{margin:0;font-size:14px}
.post .tip p+p{margin-top:9px}
.post-end{display:flex;flex-wrap:wrap;gap:9px;margin-top:46px;padding-top:26px;border-top:1px solid var(--line)}
.post-tag-e{font-size:12.5px;color:var(--ink2);background:#fff;border:1px solid var(--line);border-radius:20px;padding:6px 15px;letter-spacing:.4px}

.post-side{position:sticky;top:calc(var(--hd) + 26px);display:flex;flex-direction:column;gap:18px}
.side-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px 22px}
.side-h{font-size:12px;font-weight:600;letter-spacing:1.8px;color:var(--ink3);margin-bottom:16px}
.toc a{display:block;padding:8px 0 8px 13px;font-size:13.5px;color:var(--ink2);line-height:1.6;border-left:2px solid var(--line);transition:color .25s,border-color .25s}
.toc a:hover{color:var(--accent);border-left-color:var(--accent)}
.side-cta{background:linear-gradient(160deg,#1E1B3A,#14122B);border-color:transparent}
.side-cta .side-h{color:rgba(255,255,255,.5)}
.side-cta p{font-size:13.4px;color:rgba(255,255,255,.72);line-height:1.88;margin-bottom:18px}
.side-cta .btn{width:100%;justify-content:center;padding:11px 16px;font-size:13.5px;background:var(--accent);color:#fff}
.side-cta .btn:hover{background:var(--accent2);transform:translateY(-2px)}
.side-list a{display:block;padding:11px 0;border-bottom:1px dashed var(--line);font-size:13.4px;color:var(--ink2);line-height:1.72;transition:color .25s}
.side-list a:last-child{border-bottom:0;padding-bottom:0}
.side-list a:hover{color:var(--accent)}
.side-list span{display:block;font-size:11.5px;color:var(--ink3);letter-spacing:.6px;margin-top:5px}

.post-nav{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:58px}
.pn{display:block;background:#fff;border:1px solid var(--line);border-radius:13px;padding:22px 24px;transition:transform .3s,border-color .3s,box-shadow .3s}
.pn:hover{transform:translateY(-4px);border-color:var(--lilac);box-shadow:var(--sh-sm)}
.pn span{font-size:11.5px;letter-spacing:1.6px;color:var(--ink3)}
.pn b{display:block;margin-top:9px;font-size:15px;font-weight:600;line-height:1.65}
.pn.next{text-align:right}
.pn.empty{background:transparent;border-style:dashed;display:flex;align-items:center;justify-content:center;color:var(--ink3);font-size:13.5px}
.art-link{display:block}
.art:hover .art-t{color:var(--accent)}
.art-more{margin-top:18px;font-size:12.8px;color:var(--accent);letter-spacing:.6px;display:inline-flex;align-items:center;gap:6px}
.art-more svg{width:13px;height:13px;transition:transform .3s}
.art:hover .art-more svg{transform:translateX(4px)}

@media(max-width:1080px){
  .post-wrap{grid-template-columns:1fr;gap:0}
  .post-side{position:static;margin-top:52px}
  .post-wrap>.post-side .side-card:first-child{display:none}
}
@media(max-width:720px){
  .post-nav{grid-template-columns:1fr}
  .post-lead{font-size:15px;padding-left:15px;margin-bottom:34px}
  .post h2{font-size:19.5px;margin:38px 0 16px}
  .post-tb{font-size:12.8px}
  .post-tb th,.post-tb td{padding:9px 11px}
}