@charset "utf-8";
/* ============================================================
   昆明数优智能科技有限公司 · shuyouai.net 全站样式 v3
   设计参考：hongdongshuju.com（宽容器 / 直角 / 1px 细线 / 素雅留白）
   主色 #33908F · 白底黑字 · 无渐变 · 无重阴影 · 标题 600 字重
   ============================================================ */
:root{
  --brand:#33908F;--brand-d:#226A69;--brand-2:#2A7F7E;--brand-l:#EAF4F3;
  --cyan:#33908F;--teal:#33908F;--violet:#3A6B8F;--teal-l:#EAF4F3;--violet-l:#EDF3F4;
  --ink:#000;--ink-2:#333;--gray:#666;--gray-2:#999;
  --line:rgba(0,0,0,.1);--line-2:rgba(0,0,0,.16);
  --bg:#fff;--bg2:#F7F8F8;--bg3:#FBFBFA;
  --grad:linear-gradient(0deg,#33908F,#33908F);
  --grad-text:linear-gradient(0deg,#33908F,#33908F);
  --r-sm:2px;--r:2px;--r-lg:2px;
  --sh-s:0 1px 2px rgba(20,33,96,.04);
  --sh-m:0 3px 6px rgba(20,33,96,.06);
  --sh-brand:0 3px 6px rgba(20,33,96,.06);
  --max:1320px;
  --font:"PingFang SC","Microsoft YaHei","Microsoft YaHei UI","Hiragino Sans GB","Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{font-family:var(--font);color:var(--gray);background:var(--bg);line-height:1.8;font-size:16px;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
::selection{background:var(--brand);color:#fff}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip{position:absolute;left:-9999px}
.skip:focus{left:12px;top:12px;z-index:999;background:#fff;padding:10px 16px;border-radius:2px;box-shadow:var(--sh-m)}

/* ============ 顶栏 ============ */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line)}
.hd{display:flex;align-items:center;height:84px;gap:40px}
.brand{display:flex;align-items:center;gap:14px;flex:none}
.brand img{width:84px;height:auto;border-radius:0}
.brand .desc{font-size:11.5px;color:var(--gray-2);letter-spacing:.3px;padding-left:14px;border-left:1px solid var(--line);line-height:1.55;display:none;white-space:nowrap}
@media(min-width:1120px){.brand .desc{display:block}}
.nav{display:none}
.nav ul{display:flex;align-items:center;gap:0}
.nav a{position:relative;display:block;font-size:16px;color:var(--ink-2);padding:14px 20px;transition:color .3s}
.nav a::after{content:"";position:absolute;left:20px;right:20px;bottom:8px;height:2px;background:var(--brand);transform:scaleX(0);transform-origin:left center;transition:transform .3s ease}
.nav a:hover{color:var(--brand)}
.nav a:hover::after{transform:scaleX(1)}
.nav a[aria-current="page"]{color:var(--brand);font-weight:600}
.nav a[aria-current="page"]::after{transform:scaleX(1)}
@media(min-width:1000px){.nav{display:block;margin-left:auto}}

/* 按钮：胶囊 / 1px 边 / 无渐变 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 32px;border-radius:999px;font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:background .3s,color .3s,border-color .3s,transform .3s;white-space:nowrap;letter-spacing:.3px;font-family:inherit}
.btn:active{transform:scale(.99)}
.btn-blue{background:var(--brand);color:#fff;border-color:var(--brand)}
.btn-blue:hover{background:var(--brand-d);border-color:var(--brand-d)}
.btn-line{border-color:var(--line-2);color:var(--ink);background:#fff}
.btn-line:hover{border-color:var(--brand);color:var(--brand)}
.btn-white{background:#fff;color:var(--brand-d);border-color:#fff}
.btn-white:hover{background:var(--brand-l);border-color:var(--brand-l)}
.btn-ghost{border-color:rgba(255,255,255,.5);color:#fff;background:transparent}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.8)}
.btn-sm{padding:10px 22px;font-size:14px}

/* 移动端菜单 */
.menu-btn{display:inline-flex;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;border:1px solid var(--line-2);border-radius:2px;background:#fff;cursor:pointer;padding:0 11px;margin-left:auto}
.menu-btn span{display:block;height:1.5px;background:var(--ink);border-radius:0;transition:all .25s}
#navtoggle:checked ~ .hd .menu-btn span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
#navtoggle:checked ~ .hd .menu-btn span:nth-child(2){opacity:0}
#navtoggle:checked ~ .hd .menu-btn span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}
@media(min-width:1000px){.menu-btn{display:none}}
#navtoggle{display:none}
.mnav{display:none;border-top:1px solid var(--line);background:#fff}
#navtoggle:checked ~ .mnav{display:block}
.mnav ul{padding:6px 0 18px}
.mnav a{display:block;padding:14px 0;font-size:16px;color:var(--ink-2);border-bottom:1px solid rgba(0,0,0,.06);font-weight:400}
.mnav a[aria-current="page"]{color:var(--brand);font-weight:600}
.mnav .btn{margin-top:16px;width:100%}
.mnav .mnav-tel a{border-bottom:0;border-top:1px solid var(--line);margin-top:6px;padding-top:16px;color:var(--brand);font-weight:600}

/* ============ 通用区块 ============ */
.sec{padding:88px 0}
.pbanner + .sec{padding-top:72px}
.pbanner + .sec .sec-head{margin-bottom:44px}
.sec-sm{padding:64px 0}
.bg2{background:var(--bg2)}
.bg3{background:var(--bg3)}
.rule{height:1px;background:var(--line);border:0}
.eyebrow{display:inline-block;font-size:13px;font-weight:600;letter-spacing:2px;color:var(--brand);margin-bottom:16px;text-transform:uppercase}
.eyebrow::before{content:"";display:inline-block;width:24px;height:1px;background:var(--brand);vertical-align:middle;margin-right:10px;position:relative;top:-2px}
.eyebrow.teal{color:var(--brand)}
.eyebrow.violet{color:var(--violet)}
.h2{font-size:clamp(22px,2.6vw,34px);line-height:1.45;font-weight:600;color:var(--ink);letter-spacing:.5px;text-wrap:balance}
.h3{font-size:20px;font-weight:600;color:var(--ink);line-height:1.55}
.h4{font-size:17px;font-weight:600;color:var(--ink);line-height:1.6}
.lead{color:var(--gray);font-size:17px;line-height:1.9}
.muted{color:var(--gray-2)}
.sec-head{max-width:880px;margin-bottom:44px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head.center .eyebrow::before{display:none}
.sec-head p{margin-top:14px;color:var(--gray);font-size:16px;line-height:1.85}
.sec-head .h2{margin-top:0}
.sec-head .eyebrow{margin-bottom:14px}
.actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}

/* ============ 首页 Hero（深色大色块 + 白字） ============ */
.hero{position:relative;overflow:hidden;background:#0F2E30;color:#fff}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:64px 64px;pointer-events:none}
.hero .orb{display:none}
.hero-in{position:relative;z-index:2;padding-top:104px;padding-bottom:88px}
@keyframes fadeUp{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
.hero-in>*{animation:fadeUp .7s cubic-bezier(.22,.68,0,1) both}
.hero-in>*:nth-child(2){animation-delay:.08s}
.hero-in>*:nth-child(3){animation-delay:.16s}
.hero-in>*:nth-child(4){animation-delay:.24s}
.hero-in>*:nth-child(5){animation-delay:.32s}
.hero .tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
.hero .tags span{font-size:13px;font-weight:400;color:rgba(255,255,255,.85);border:1px solid rgba(255,255,255,.28);border-radius:999px;padding:6px 18px}
.hero h1{font-size:clamp(23px,3.4vw,44px);line-height:1.42;font-weight:600;letter-spacing:.5px;max-width:900px;color:#fff;text-wrap:balance}
.hero h1 em{font-style:normal;color:#8FD3D2}
.hero .sub{margin-top:20px;font-size:16px;color:rgba(255,255,255,.72);max-width:960px;line-height:1.95}
.hero .actions .btn-line{background:transparent;border-color:rgba(255,255,255,.5);color:#fff}
.hero .actions .btn-line:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.1)}
.hero .stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;margin-top:56px;border-top:1px solid rgba(255,255,255,.16);padding-top:0}
.hero .stats div{padding:28px 26px 4px 0;border-right:1px solid rgba(255,255,255,.14);transition:opacity .3s}
.hero .stats div:last-child{border-right:0}
.hero .stats div:hover{opacity:.82}
.hero .stats div b{display:block;font-size:34px;font-weight:600;letter-spacing:0;color:#fff;line-height:1.2;margin-bottom:6px}
.hero .stats div span{font-size:14px;color:rgba(255,255,255,.62)}
@media(max-width:900px){.hero .stats{grid-template-columns:repeat(2,minmax(0,1fr));margin-top:40px}
.hero .stats div:nth-child(2n){border-right:0}
.hero .stats div{padding:22px 18px 2px 0}}
@media(max-width:600px){.hero .stats div b{font-size:28px}}

/* 内页 banner：深色带 + 白字 */
.pbanner{position:relative;overflow:hidden;background:#0F2E30;color:#fff;padding:76px 0 72px}
.pbanner::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:64px 64px;pointer-events:none}
.pbanner .wrap{position:relative;z-index:2}
.pbanner h1{font-size:clamp(22px,2.8vw,38px);line-height:1.45;font-weight:600;letter-spacing:.5px;max-width:900px;color:#fff;text-wrap:balance}
.pbanner p{margin-top:16px;font-size:16px;color:rgba(255,255,255,.68);max-width:820px;line-height:1.85}
@media(max-width:768px){.pbanner{padding:52px 0 48px}}

/* ============ 卡片网格 ============ */
.grid{display:grid;gap:0}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
/* 卡片拼接处只保留一条 1px 线 */
.grid > *{margin-right:-1px;margin-bottom:-1px}
@media(max-width:980px){.g3,.g4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:700px){.g2,.g3,.g4{grid-template-columns:1fr}}

/* 卡片：白底 + 1px 细线 + 直角，网格用负边距拼成表格式分隔 */
.card{position:relative;background:#fff;border:1px solid var(--line);padding:34px 32px;transition:box-shadow .35s,border-color .35s,transform .35s}
.card::after{display:none}
.card:hover{box-shadow:var(--sh-m);border-color:var(--line-2);transform:translateY(-3px);z-index:2}
.card:hover .h3,.card:hover .h4{color:var(--brand)}
.card .ic{width:52px;height:52px;border-radius:2px;display:flex;align-items:center;justify-content:center;background:var(--brand-l);color:var(--brand);margin-bottom:22px;transition:background .3s,color .3s}
.card:hover .ic{background:var(--brand);color:#fff}
.card .ic svg{width:24px;height:24px}
.card .h3{margin-bottom:12px;transition:color .3s}
.card p{color:var(--gray);font-size:15px;line-height:1.85}

/* 三支柱 */
.pillar{position:relative;background:#fff;border:1px solid var(--line);border-top:2px solid var(--pc,var(--brand));padding:38px 32px;transition:box-shadow .35s,transform .35s}
.pillar::before,.pillar::after{display:none}
.pillar:hover{box-shadow:var(--sh-m);transform:translateY(-3px)}
.pillar .top{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.pillar .num{font-size:13px;font-weight:600;letter-spacing:2px;color:var(--gray-2)}
.pillar .ic{width:52px;height:52px;border-radius:2px;display:flex;align-items:center;justify-content:center;color:var(--brand);background:var(--brand-l)}
.pillar .ic svg{width:26px;height:26px}
.pillar h3{font-size:21px;color:var(--ink);font-weight:600;margin-bottom:12px;line-height:1.5;transition:color .3s}
.pillar:hover h3{color:var(--pc,var(--brand))}
.pillar p{color:var(--gray);font-size:15px;line-height:1.85}
.pillar .list{margin-top:20px;padding-top:18px;border-top:1px solid var(--line)}
.pillar .list li{position:relative;padding:6px 0 6px 22px;font-size:14.5px;color:var(--ink-2);line-height:1.75}
.pillar .list li::before{content:"";position:absolute;left:0;top:15px;width:12px;height:7px;border-left:1.5px solid var(--pc,var(--brand));border-bottom:1.5px solid var(--pc,var(--brand));transform:rotate(-45deg)}
.pillar .more{display:inline-flex;align-items:center;gap:6px;margin-top:22px;font-size:14px;font-weight:600;color:var(--pc,var(--brand));transition:gap .3s}
.pillar .more:hover{gap:12px}

/* 方案速览卡 */
.sol{position:relative;display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);padding:32px 30px;transition:box-shadow .35s,border-color .35s,transform .35s}
.sol::after{display:none}
.sol:hover{box-shadow:var(--sh-m);border-color:var(--line-2);transform:translateY(-3px);z-index:2}
.sol .tag{font-size:12.5px;font-weight:400;color:var(--gray-2);padding:0 0 10px;align-self:flex-start;margin-bottom:12px;border-bottom:1px solid var(--brand);letter-spacing:.5px}
.sol h3{font-size:19px;font-weight:600;color:var(--ink);line-height:1.6;margin-bottom:10px;transition:color .3s}
.sol:hover h3{color:var(--brand)}
.sol .pain{color:var(--gray);font-size:14.5px;line-height:1.85;flex:1}
.sol dl{margin-top:20px;padding-top:18px;border-top:1px solid var(--line);font-size:14px}
.sol dl div{display:flex;gap:10px;padding:4px 0}
.sol dt{color:var(--gray-2);flex:none;width:66px}
.sol dd{color:var(--ink-2);font-weight:400}

/* ============ 正文文档区 ============ */
.doc{max-width:880px}
.doc h2{font-size:clamp(22px,2.3vw,30px);color:var(--ink);font-weight:600;margin:56px 0 20px;line-height:1.5;scroll-margin-top:110px;padding-left:0;border-left:0;position:relative}
.doc h2::before{content:"";display:block;width:32px;height:2px;background:var(--brand);margin-bottom:16px}
.doc h2:first-child{margin-top:0}
.doc h3{font-size:19px;color:var(--ink);font-weight:600;margin:36px 0 12px;line-height:1.6}
.doc p{color:var(--gray);font-size:16px;line-height:2;margin-bottom:16px}
.doc ul.dot,.doc ol.num{margin:0 0 20px}
.doc ul.dot li{position:relative;padding:6px 0 6px 22px;color:var(--gray);font-size:15.5px;line-height:1.9}
.doc ul.dot li::before{content:"";position:absolute;left:2px;top:17px;width:5px;height:5px;border-radius:50%;background:var(--brand)}
.doc ol.num{counter-reset:n}
.doc ol.num li{position:relative;padding:6px 0 6px 34px;color:var(--gray);font-size:15.5px;line-height:1.9;counter-increment:n}
.doc ol.num li::before{content:counter(n);position:absolute;left:0;top:8px;width:22px;height:22px;border-radius:50%;background:transparent;color:var(--brand);font-size:13px;font-weight:600;display:flex;align-items:center;justify-content:center;border:1px solid var(--brand)}
.doc strong{color:var(--ink);font-weight:600}
.doc a.inline{color:var(--brand);border-bottom:1px solid rgba(51,144,143,.35);transition:border-color .2s}
.doc a.inline:hover{border-bottom-color:var(--brand)}

/* 结论框 */
.answer{position:relative;background:var(--bg2);border:0;border-left:3px solid var(--brand);padding:30px 34px;margin:0 0 34px}
.answer::before{display:none}
.answer .lb{font-size:13px;font-weight:600;letter-spacing:2px;color:var(--brand);display:block;margin-bottom:12px}
.answer p{margin:0;color:var(--ink-2);font-size:16.5px;line-height:2}
.answer p+p{margin-top:12px}

/* 表格 */
.tblwrap{overflow-x:auto;margin:0 0 28px;border:1px solid var(--line);border-radius:0;-webkit-overflow-scrolling:touch;background:#fff;box-shadow:none}
table.tbl{width:100%;border-collapse:collapse;min-width:560px;font-size:14.5px;background:transparent}
table.tbl caption{text-align:left;font-size:13px;color:var(--gray-2);padding:14px 20px 0;caption-side:top}
table.tbl th,table.tbl td{padding:16px 20px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top;line-height:1.8}
table.tbl thead th{background:var(--bg2);color:var(--ink);font-weight:600;font-size:14px;white-space:nowrap}
table.tbl tbody tr:last-child td{border-bottom:0}
table.tbl td:first-child{color:var(--ink);font-weight:600}
table.tbl tbody tr{transition:background .25s}
table.tbl tbody tr:hover{background:#FAFBFB}

/* 清单 */
.check{display:grid;gap:0 40px;margin:0 0 26px;grid-template-columns:repeat(2,minmax(0,1fr))}
@media(max-width:700px){.check{grid-template-columns:1fr}}
.check li{position:relative;padding:13px 0 13px 26px;border-bottom:1px solid rgba(0,0,0,.06);font-size:15px;color:var(--ink-2);line-height:1.75}
.check li::before{content:"";position:absolute;left:0;top:20px;width:13px;height:7px;border-left:1.5px solid var(--brand);border-bottom:1.5px solid var(--brand);transform:rotate(-45deg)}

/* 步骤 */
.steps{display:grid;gap:0;margin-bottom:10px;counter-reset:st;border-top:1px solid var(--line)}
.step{display:flex;gap:24px;background:transparent;border:0;border-bottom:1px solid var(--line);padding:26px 0;transition:background .3s}
.step:hover{background:#FAFBFB}
.step .n{flex:none;width:40px;height:40px;border-radius:2px;background:var(--brand-l);color:var(--brand);font-weight:600;font-size:16px;display:flex;align-items:center;justify-content:center;box-shadow:none}
.step .body h3{font-size:17px;color:var(--ink);font-weight:600;margin-bottom:6px}
.step .body p{color:var(--gray);font-size:15px;line-height:1.85;margin:0}
.step .body .meta{display:inline-block;margin-top:10px;font-size:12.5px;font-weight:400;color:var(--brand);background:var(--brand-l);border-radius:999px;padding:4px 14px}

/* FAQ */
.faq{border-top:1px solid var(--line);margin-bottom:8px}
.faq details{border-bottom:1px solid var(--line);padding:0;transition:background .25s}
.faq details:hover{background:#FAFBFB}
.faq summary{list-style:none;cursor:pointer;padding:24px 48px 24px 0;position:relative;font-size:16.5px;font-weight:600;color:var(--ink);line-height:1.7;transition:color .25s}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";position:absolute;right:8px;top:32px;width:9px;height:9px;border-right:1.5px solid var(--gray-2);border-bottom:1.5px solid var(--gray-2);transform:rotate(45deg);transition:transform .3s,border-color .3s}
.faq details[open] summary{color:var(--brand)}
.faq details[open] summary::after{transform:rotate(-135deg);top:36px;border-color:var(--brand)}
.faq .ans{padding:0 48px 26px 0;color:var(--gray);font-size:15.5px;line-height:1.95}
.faq .ans p{margin-bottom:10px}

/* 提示 */
.note{background:#FBFAF4;border:0;border-left:3px solid #C9A227;padding:22px 26px;font-size:14.5px;color:#6B5B33;line-height:1.9;margin:0 0 26px}
.note b{color:#4A3F20;font-weight:600}

/* CTA：浅灰底，与深色首屏/页脚形成三段节奏 */
.cta{position:relative;overflow:hidden;background:var(--bg2);color:var(--ink);border-radius:0;padding:80px 48px;text-align:center;box-shadow:none;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.cta::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(0,0,0,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(0,0,0,.03) 1px,transparent 1px);background-size:64px 64px;pointer-events:none}
.cta::after{display:none}
.cta>*{position:relative;z-index:2}
.cta h2{font-size:clamp(23px,2.6vw,32px);font-weight:600;line-height:1.5;color:var(--ink)}
.cta p{margin:18px auto 0;max-width:680px;color:var(--gray);font-size:16px}
.cta .actions{justify-content:center}
.cta-points{display:flex;flex-wrap:wrap;justify-content:center;gap:10px 36px;margin-top:18px;font-size:16px;font-weight:400;color:var(--ink-2)}
.cta-points li{position:relative;padding-left:18px;line-height:1.85}
.cta-points li::before{content:"";position:absolute;left:0;top:13px;width:6px;height:6px;border-radius:50%;background:var(--brand)}
.cta-note{margin:16px auto 0;font-size:14.5px;color:var(--gray-2)}

/* 页脚 */
.site-footer{background:#0B2325;color:rgba(255,255,255,.6);padding:72px 0 0;margin-top:0;font-size:14.5px;position:relative;overflow:hidden}
.site-footer::before{display:none}
.ft{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:52px;position:relative}
@media(max-width:860px){.ft{grid-template-columns:1fr 1fr;gap:34px}}
@media(max-width:560px){.ft{grid-template-columns:1fr}}
.ft h3{color:#fff;font-size:15px;font-weight:600;margin-bottom:20px;letter-spacing:.5px}
.ft p{line-height:1.95;color:rgba(255,255,255,.55)}
.ft ul li{margin-bottom:12px}
.ft a{color:rgba(255,255,255,.6);transition:color .25s}
.ft a:hover{color:#fff}
.ft .brandline{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.ft .brandline span{color:#fff;font-weight:600;font-size:16px;letter-spacing:.5px}
.ft .logo-chip{background:#fff;border-radius:2px;padding:6px 9px;display:inline-flex}
.ft .logo-chip img{width:86px}
.ft .tel{color:#fff;font-size:24px;font-weight:600;letter-spacing:.5px;display:inline-block;margin-bottom:8px}
.ft .tel:hover{color:#8FD3D2}
.ft-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:24px;padding-bottom:28px;display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;align-items:center;font-size:13.5px;color:rgba(255,255,255,.4);position:relative}
.ft-bottom a{color:rgba(255,255,255,.55)}
.ft-bottom a:hover{color:#fff}

/* 联系页 */
.contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:0;align-items:start;border-top:1px solid var(--line)}
@media(max-width:860px){.contact-grid{grid-template-columns:1fr}}
.info-card{background:#fff;border:0;border-bottom:1px solid var(--line);padding:30px 36px 30px 0;transition:background .25s}
.info-card:hover{background:#FAFBFB}
.info-card+.info-card{margin-top:0}
.info-card h3{font-size:13px;color:var(--brand);font-weight:600;margin-bottom:10px;letter-spacing:1.6px}
.info-card p{color:var(--gray);font-size:15.5px;line-height:1.9}
.info-card .big{font-size:30px;font-weight:600;color:var(--ink);letter-spacing:.5px;line-height:1.4}
.info-card .big a{color:var(--ink)}
.info-card .big a:hover{color:var(--brand)}
.qr{border:0;border-left:1px solid var(--line);padding:34px 0 0 44px;text-align:center;box-shadow:none;border-radius:0}
@media(max-width:860px){.qr{border-left:0;border-top:1px solid var(--line);padding:34px 0 0}}
.qr .box{width:180px;height:180px;margin:0 auto 16px;border:1px solid var(--line);border-radius:0;overflow:hidden;background:#fff;text-align:center;padding:0;line-height:1.7}
.qr .box img{width:100%;height:100%;object-fit:contain}

/* 知识库列表 */
.post{position:relative;display:block;background:#fff;border:0;border-bottom:1px solid var(--line);border-radius:0;padding:34px 40px 34px 0;transition:background .3s,padding .3s}
.post::after{display:none}
.post:hover{background:#FAFBFB}
.post:hover h2{color:var(--brand)}
.post .meta{font-size:12.5px;color:var(--gray-2);display:flex;gap:16px;margin-bottom:14px;align-items:center}
.post .meta em{font-style:normal;font-weight:400;color:var(--brand);background:transparent;border-radius:0;padding:0;letter-spacing:1px}
.post h2{font-size:21px;font-weight:600;color:var(--ink);line-height:1.6;margin-bottom:10px;transition:color .25s}
.post p{color:var(--gray);font-size:15px;line-height:1.9}

/* ============ 主题插图（等距科技插画） ============
   深墨绿底插图 · 白底页面用 .vfig 加直角容器
   深色区域用 .vfig--fluid 让边缘渐隐融底 */
.vfig{margin:0;background:#0F2E30;border:0;overflow:hidden}
.vfig img{display:block;width:100%;height:auto}
.vfig--fluid{background:transparent;border:0;overflow:visible}
.vfig--fluid img{-webkit-mask-image:radial-gradient(ellipse 74% 74% at 50% 51%,#000 56%,rgba(0,0,0,0) 100%);mask-image:radial-gradient(ellipse 74% 74% at 50% 51%,#000 56%,rgba(0,0,0,0) 100%)}

/* 首页 Hero 两栏：左文案 · 右主视觉 */
.hero-grid{display:grid;grid-template-columns:minmax(0,1.06fr) minmax(0,.94fr);gap:54px;align-items:center}
.hero-copy>*{animation:fadeUp .7s cubic-bezier(.22,.68,0,1) both}
.hero-copy>*:nth-child(2){animation-delay:.08s}
.hero-copy>*:nth-child(3){animation-delay:.16s}
.hero-copy>*:nth-child(4){animation-delay:.24s}
.hero-visual{position:relative;animation:fadeUp .9s cubic-bezier(.22,.68,0,1) .26s both}
.hero-visual img{width:100%;height:auto;display:block;-webkit-mask-image:radial-gradient(ellipse 68% 60% at 50% 47%,#000 50%,rgba(0,0,0,0) 100%);mask-image:radial-gradient(ellipse 68% 60% at 50% 47%,#000 50%,rgba(0,0,0,0) 100%)}
.hero-visual .cap{position:absolute;left:0;bottom:-6px;font-size:12.5px;color:rgba(255,255,255,.34);letter-spacing:.5px}
@media(max-width:1060px){
  .hero-grid{grid-template-columns:1fr;gap:0}
  .hero-visual{max-width:420px;margin:6px auto 0}
}

/* 内页 banner 两栏：右配图 */
.pbanner.split .wrap{display:grid;grid-template-columns:minmax(0,1fr) 442px;gap:40px;align-items:center}
.pbanner.split .vfig{background:transparent;border:0;overflow:visible}
.pbanner.split .vfig img{-webkit-mask-image:radial-gradient(ellipse 72% 72% at 50% 50%,#000 52%,rgba(0,0,0,0) 100%);mask-image:radial-gradient(ellipse 72% 72% at 50% 50%,#000 52%,rgba(0,0,0,0) 100%)}
@media(max-width:980px){
  .pbanner.split .wrap{grid-template-columns:1fr;gap:0}
  .pbanner.split .vfig{display:none}
}

/* 区块标题两栏：左标题 · 右配图（白底） */
.sec-head.split{display:grid;grid-template-columns:minmax(0,1fr) 400px;gap:56px;align-items:end;max-width:none;margin-bottom:48px}
.sec-head.split .vfig{display:block}
@media(max-width:920px){
  .sec-head.split{grid-template-columns:1fr;gap:0}
  .sec-head.split .vfig{display:none}
}

@media(max-width:768px){
  .sec{padding:56px 0}
  .hero-in{padding-top:72px;padding-bottom:60px}
  .hero .stats{gap:0}
  .pbanner + .sec{padding-top:48px}
  .cta{padding:52px 24px}
  .doc h2{margin-top:44px}
  .card{padding:28px 24px}
  .pillar,.sol{padding:28px 24px}
  .post{padding:28px 0}
  .info-card{padding:26px 0}
  .qr{padding:28px 20px}
}