@charset "utf-8";
/* ============================================================
   昆明数优智能科技有限公司 · shuyouai.net 全站样式 v2
   设计语言：浅色底 / 蓝色渐变 / 大圆角 / 玻璃质感 / 轻动效
   ============================================================ */
:root{
  --brand:#1A67DF;--brand-d:#0842A0;--brand-2:#4F46E5;--brand-l:#EAF1FE;
  --cyan:#0EA5E9;--teal:#0D9488;--violet:#6C55E0;
  --ink:#0E1B33;--ink-2:#1E2F4D;--gray:#5A6B85;--gray-2:#8593AB;
  --line:#E4EBF6;--line-2:#D5E0F2;
  --bg:#FFFFFF;--bg2:#F5F8FE;--bg3:#F9FBFF;
  --grad:linear-gradient(135deg,#2563EB 0%,#1A67DF 55%,#0842A0 100%);
  --grad-text:linear-gradient(100deg,#1A67DF 10%,#4F46E5 60%,#0EA5E9 110%);
  --r-sm:12px;--r:18px;--r-lg:24px;
  --sh-s:0 1px 2px rgba(14,27,51,.04),0 4px 14px rgba(14,27,51,.05);
  --sh-m:0 12px 36px -8px rgba(20,60,140,.16);
  --sh-brand:0 10px 30px -6px rgba(26,103,223,.45);
  --max:1180px;
  --font:"Space Grotesk","PingFang SC","Microsoft YaHei","Hiragino Sans GB","Segoe UI",system-ui,-apple-system,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(--ink);background:var(--bg);line-height:1.85;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:#1A67DF;color:#fff}
.wrap{max-width:var(--max);margin:0 auto;padding:0 22px}
.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:10px;box-shadow:var(--sh-m)}

/* ============ 顶栏 ============ */
/* 基础态：纯白不透明，任何浏览器下拉都不会透出页面内容 */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 2px 14px rgba(14,27,51,.06)}
/* 支持毛玻璃的浏览器：改为半透明+模糊，观感更精致 */
@supports ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){
  .site-header{background:rgba(255,255,255,.9);backdrop-filter:saturate(180%) blur(16px);-webkit-backdrop-filter:saturate(180%) blur(16px);box-shadow:none}
}
.hd{display:flex;align-items:center;justify-content:space-between;height:68px;gap:20px}
.brand{display:flex;align-items:center;gap:12px;flex:none}
.brand img{width:110px;height:auto;border-radius:8px}
.brand .desc{font-size:12px;color:var(--gray-2);letter-spacing:.5px;padding-left:12px;border-left:1px solid var(--line);line-height:1.4;display:none}
@media(min-width:1080px){.brand .desc{display:block}}
.nav{display:none}
.nav ul{display:flex;align-items:center;gap:6px}
.nav a{font-size:14.5px;color:#3D4E68;padding:8px 14px;border-radius:999px;transition:color .2s,background .2s}
.nav a:hover{color:var(--brand);background:var(--brand-l)}
.nav a[aria-current="page"]{color:var(--brand);font-weight:700;background:var(--brand-l)}
.hd-cta{display:none}
@media(min-width:960px){.nav{display:block}.hd-cta{display:inline-flex}}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 30px;border-radius:999px;font-size:15px;font-weight:700;border:1.5px solid transparent;cursor:pointer;transition:transform .22s,box-shadow .22s,background .22s,color .22s,border-color .22s;white-space:nowrap;letter-spacing:.2px}
.btn:active{transform:scale(.97)}
.btn-blue{background:var(--grad);color:#fff;box-shadow:var(--sh-brand)}
.btn-blue:hover{transform:translateY(-2px);box-shadow:0 16px 38px -8px rgba(26,103,223,.55)}
.btn-line{border-color:var(--line-2);color:var(--ink);background:#fff;box-shadow:var(--sh-s)}
.btn-line:hover{border-color:#9DBCF3;color:var(--brand);transform:translateY(-2px);box-shadow:var(--sh-m)}
.btn-white{background:#fff;color:var(--brand-d);box-shadow:0 10px 28px rgba(4,20,60,.28)}
.btn-white:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(4,20,60,.36)}
.btn-ghost{border-color:rgba(255,255,255,.5);color:#fff;background:rgba(255,255,255,.06);backdrop-filter:blur(6px)}
.btn-ghost:hover{background:rgba(255,255,255,.16);transform:translateY(-2px)}
.btn-sm{padding:10px 20px;font-size:14px}

/* 移动端菜单（纯 CSS） */
.menu-btn{display:inline-flex;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;border:1.5px solid var(--line);border-radius:12px;background:#fff;cursor:pointer;padding:0 11px}
.menu-btn span{display:block;height:2px;background:var(--ink);border-radius:2px;transition:all .2s}
#navtoggle:checked ~ .hd .menu-btn span:nth-child(1){transform:translateY(7px) rotate(45deg)}
#navtoggle:checked ~ .hd .menu-btn span:nth-child(2){opacity:0}
#navtoggle:checked ~ .hd .menu-btn span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media(min-width:960px){.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:10px 0 16px}
.mnav a{display:block;padding:13px 0;font-size:15px;border-bottom:1px solid #F0F4FA;font-weight:500}
.mnav a[aria-current="page"]{color:var(--brand);font-weight:700}
.mnav .btn{margin-top:14px;width:100%}

/* ============ 通用区块 ============ */
.sec{padding:64px 0}
.pbanner + .sec{padding-top:52px}
.pbanner + .sec .sec-head{margin-bottom:40px}
.sec-sm{padding:64px 0}
.bg2{background:linear-gradient(180deg,#F5F8FE 0%,#FDFEFF 100%)}
.bg3{background:linear-gradient(180deg,#FFFFFF 0%,#F3F7FF 100%)}
.rule{height:1px;background:var(--line);border:0}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:1.8px;color:var(--brand);background:#fff;border:1px solid var(--line-2);border-radius:999px;padding:6px 16px;margin-bottom:18px;box-shadow:var(--sh-s)}
.eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--grad);flex:none}
.eyebrow.teal{color:var(--teal)}
.eyebrow.teal::before{background:linear-gradient(135deg,#0D9488,#0EA5E9)}
.eyebrow.violet{color:var(--violet)}
.eyebrow.violet::before{background:linear-gradient(135deg,#6C55E0,#B44FE0)}
.h2{font-size:clamp(26px,3.2vw,38px);line-height:1.32;font-weight:800;color:var(--ink);letter-spacing:.2px}
.h3{font-size:20px;font-weight:800;color:var(--ink);line-height:1.5}
.h4{font-size:17px;font-weight:700;color:var(--ink);line-height:1.5}
.lead{color:var(--gray);font-size:17px;line-height:1.9}
.muted{color:var(--gray)}
.sec-head{max-width:840px;margin-bottom:36px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head p{margin-top:16px;color:var(--gray);font-size:16.5px;line-height:1.9}
.sec-head .h2{margin-top:2px}
.sec-head .eyebrow{margin-bottom:18px}

/* 按钮组 */
.actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}

/* ============ 首页 Hero（浅色渐变风） ============ */
.hero{position:relative;overflow:hidden;background:
  radial-gradient(900px 520px at 82% -10%,rgba(79,70,229,.16),transparent 60%),
  radial-gradient(760px 480px at 8% 8%,rgba(26,103,223,.14),transparent 62%),
  radial-gradient(600px 420px at 55% 118%,rgba(14,165,233,.12),transparent 60%),
  linear-gradient(180deg,#F7FAFF 0%,#FFFFFF 88%);color:var(--ink)}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(26,103,223,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(26,103,223,.05) 1px,transparent 1px);background-size:54px 54px;mask-image:radial-gradient(ellipse at 30% 20%,#000 15%,transparent 68%);-webkit-mask-image:radial-gradient(ellipse at 30% 20%,#000 15%,transparent 68%)}
.hero .orb{position:absolute;border-radius:50%;filter:blur(80px);pointer-events:none}
.hero .o1{width:440px;height:440px;background:rgba(26,103,223,.18);right:-130px;top:-160px}
.hero .o2{width:340px;height:340px;background:rgba(14,165,233,.15);left:-110px;bottom:-150px}
.hero-in{position:relative;z-index:2;padding:88px 0 76px}
@keyframes fadeUp{from{opacity:0;transform:translateY(22px)}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:22px}
.hero .tags span{font-size:13px;font-weight:600;color:var(--brand-d);border:1px solid rgba(26,103,223,.22);background:rgba(255,255,255,.75);backdrop-filter:blur(8px);border-radius:999px;padding:6px 16px;box-shadow:var(--sh-s)}
.hero h1{font-size:clamp(23px,2.7vw,36px);line-height:1.35;font-weight:800;letter-spacing:.3px;max-width:860px;color:var(--ink)}
.hero h1 em{font-style:normal;background:var(--grad-text);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero .sub{margin-top:16px;font-size:16px;color:var(--gray);max-width:960px;line-height:1.9}
.hero .actions .btn-line{background:rgba(255,255,255,.8);backdrop-filter:blur(8px)}
.hero .stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-top:44px;padding:0;border-top:0}
.hero .stats div{background:rgba(255,255,255,.78);backdrop-filter:blur(10px);border:1px solid rgba(228,235,246,.9);border-radius:var(--r);padding:18px 20px;box-shadow:var(--sh-s);transition:transform .25s,box-shadow .25s}
.hero .stats div:hover{transform:translateY(-4px);box-shadow:var(--sh-m)}
.hero .stats div b{display:block;font-size:26px;font-weight:800;letter-spacing:.4px;background:var(--grad-text);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;line-height:1.25}
.hero .stats div span{font-size:13.5px;color:var(--gray)}
@media(max-width:900px){.hero .stats{grid-template-columns:repeat(2,minmax(0,1fr))}}

/* 内页 banner */
.pbanner{position:relative;overflow:hidden;background:
  radial-gradient(720px 380px at 88% -20%,rgba(79,70,229,.13),transparent 62%),
  radial-gradient(620px 360px at 4% 0%,rgba(26,103,223,.12),transparent 60%),
  linear-gradient(180deg,#F5F8FF 0%,#FFFFFF 100%);color:var(--ink);padding:48px 0 48px}
.pbanner::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(26,103,223,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(26,103,223,.05) 1px,transparent 1px);background-size:50px 50px;mask-image:radial-gradient(ellipse at 18% 30%,#000 12%,transparent 66%);-webkit-mask-image:radial-gradient(ellipse at 18% 30%,#000 12%,transparent 66%)}
.pbanner .wrap{position:relative;z-index:2}
.pbanner h1{font-size:clamp(21px,2.3vw,28px);line-height:1.35;font-weight:800;letter-spacing:.2px;max-width:900px}
.pbanner p{margin-top:14px;font-size:15.5px;color:var(--gray);max-width:820px;line-height:1.9}

/* ============ 卡片网格 ============ */
.grid{display:grid;gap:22px}
.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))}
@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}}

.card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:30px;transition:transform .28s,box-shadow .28s,border-color .28s;overflow:hidden}
.card::after{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--grad);opacity:0;transition:opacity .28s}
.card:hover{transform:translateY(-5px);box-shadow:var(--sh-m);border-color:#C7D8F5}
.card:hover::after{opacity:1}
.card .ic{width:50px;height:50px;border-radius:14px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#EAF1FE,#F0EDFE);color:var(--brand);margin-bottom:20px;transition:background .28s,color .28s,transform .28s}
.card:hover .ic{background:var(--grad);color:#fff;transform:scale(1.06)}
.card .ic svg{width:24px;height:24px}
.card .h3{margin-bottom:10px}
.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-radius:var(--r-lg);padding:34px 30px;overflow:hidden;transition:transform .28s,box-shadow .28s,border-color .28s}
.pillar::before{content:"";position:absolute;left:0;top:0;right:0;height:4px;background:var(--pc,var(--brand));opacity:.9}
.pillar::after{content:"";position:absolute;right:-70px;top:-70px;width:200px;height:200px;border-radius:50%;background:var(--pc,var(--brand));opacity:.06;filter:blur(6px)}
.pillar:hover{transform:translateY(-6px);box-shadow:var(--sh-m);border-color:#C7D8F5}
.pillar .top{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.pillar .num{font-size:12px;font-weight:700;letter-spacing:1.4px;color:var(--pc,var(--brand))}
.pillar .ic{width:52px;height:52px;border-radius:15px;display:flex;align-items:center;justify-content:center;color:#fff;background:linear-gradient(135deg,var(--pc,var(--brand)),color-mix(in srgb,var(--pc,var(--brand)) 72%,#4F46E5));box-shadow:0 8px 20px -6px color-mix(in srgb,var(--pc,var(--brand)) 55%,transparent)}
.pillar .ic svg{width:26px;height:26px}
.pillar h3{font-size:20.5px;color:var(--ink);font-weight:800;margin-bottom:12px;line-height:1.5}
.pillar p{color:var(--gray);font-size:15px;line-height:1.85}
.pillar .list{margin-top:18px;padding-top:16px;border-top:1px dashed var(--line-2)}
.pillar .list li{position:relative;padding:5px 0 5px 24px;font-size:14.5px;color:#42536B}
.pillar .list li::before{content:"";position:absolute;left:0;top:13px;width:14px;height:8px;border-left:2px solid var(--pc,var(--brand));border-bottom:2px solid var(--pc,var(--brand));transform:rotate(-45deg)}
.pillar .more{display:inline-flex;align-items:center;gap:6px;margin-top:20px;font-size:14px;font-weight:700;color:var(--pc,var(--brand))}
.pillar .more:hover{gap:11px}

/* 方案速览卡 */
.sol{position:relative;display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:28px;transition:transform .28s,box-shadow .28s,border-color .28s;overflow:hidden}
.sol::after{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--grad);opacity:0;transition:opacity .28s}
.sol:hover{transform:translateY(-5px);box-shadow:var(--sh-m);border-color:#C7D8F5}
.sol:hover::after{opacity:1}
.sol .tag{font-size:12px;font-weight:700;color:var(--brand);background:var(--brand-l);border-radius:999px;padding:5px 14px;align-self:flex-start;margin-bottom:16px}
.sol h3{font-size:18.5px;font-weight:800;color:var(--ink);line-height:1.55;margin-bottom:10px}
.sol .pain{color:var(--gray);font-size:14.5px;line-height:1.8;flex:1}
.sol dl{margin-top:18px;padding-top:16px;border-top:1px dashed var(--line-2);font-size:14px}
.sol dl div{display:flex;gap:10px;padding:3px 0}
.sol dt{color:var(--gray-2);flex:none;width:62px}
.sol dd{color:#33445C;font-weight:500}

/* ============ 正文文档区 ============ */
.doc{max-width:860px}
.doc h2{font-size:clamp(22px,2.5vw,28px);color:var(--ink);font-weight:800;margin:54px 0 18px;line-height:1.5;scroll-margin-top:96px;padding-left:16px;border-left:4px solid var(--brand);border-image:linear-gradient(180deg,#2563EB,#4F46E5) 1}
.doc h2:first-child{margin-top:0}
.doc h3{font-size:18px;color:var(--ink);font-weight:700;margin:32px 0 10px;line-height:1.6}
.doc p{color:#3B4B62;font-size:16px;line-height:1.95;margin-bottom:14px}
.doc ul.dot,.doc ol.num{margin:0 0 18px}
.doc ul.dot li{position:relative;padding:5px 0 5px 24px;color:#3B4B62;font-size:15.5px;line-height:1.85}
.doc ul.dot li::before{content:"";position:absolute;left:4px;top:15px;width:6px;height:6px;border-radius:50%;background:var(--brand)}
.doc ol.num{counter-reset:n}
.doc ol.num li{position:relative;padding:5px 0 5px 32px;color:#3B4B62;font-size:15.5px;line-height:1.85;counter-increment:n}
.doc ol.num li::before{content:counter(n);position:absolute;left:0;top:7px;width:22px;height:22px;border-radius:7px;background:var(--grad);color:#fff;font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center}
.doc strong{color:var(--ink);font-weight:700}
.doc a.inline{color:var(--brand);border-bottom:1px solid #BCD2FF;transition:border-color .2s}
.doc a.inline:hover{border-bottom-color:var(--brand)}

/* 结论框 */
.answer{position:relative;background:linear-gradient(135deg,#F0F5FF,#F5F1FF);border:1px solid #DCE6FA;border-radius:var(--r);padding:28px 30px;margin:0 0 30px;overflow:hidden}
.answer::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--grad)}
.answer .lb{font-size:12px;font-weight:700;letter-spacing:1.6px;color:var(--brand);display:block;margin-bottom:10px}
.answer p{margin:0;color:#26364D;font-size:16.5px;line-height:1.95}
.answer p+p{margin-top:10px}

/* 表格 */
.tblwrap{overflow-x:auto;margin:0 0 24px;border:1px solid var(--line);border-radius:var(--r);-webkit-overflow-scrolling:touch;background:#fff;box-shadow:var(--sh-s)}
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 18px 0}
table.tbl th,table.tbl td{padding:14px 18px;text-align:left;border-bottom:1px solid #EEF3FA;vertical-align:top;line-height:1.75}
table.tbl thead th{background:linear-gradient(135deg,#F0F5FF,#F6F4FF);color:var(--ink);font-weight:700;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 .2s}
table.tbl tbody tr:hover{background:#F8FBFF}

/* 清单 */
.check{display:grid;gap:10px;margin:0 0 22px;grid-template-columns:repeat(2,minmax(0,1fr))}
@media(max-width:700px){.check{grid-template-columns:1fr}}
.check li{position:relative;padding:12px 14px 12px 42px;background:#fff;border:1px solid var(--line);border-radius:12px;font-size:15px;color:#33445C;line-height:1.7;transition:border-color .2s,box-shadow .2s}
.check li:hover{border-color:#C7D8F5;box-shadow:var(--sh-s)}
.check li::before{content:"";position:absolute;left:15px;top:17px;width:15px;height:8px;border-left:2.5px solid var(--teal);border-bottom:2.5px solid var(--teal);transform:rotate(-45deg)}

/* 步骤 */
.steps{display:grid;gap:16px;margin-bottom:10px;counter-reset:st}
.step{display:flex;gap:18px;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:24px 26px;transition:transform .25s,box-shadow .25s}
.step:hover{transform:translateY(-3px);box-shadow:var(--sh-m)}
.step .n{flex:none;width:38px;height:38px;border-radius:11px;background:var(--grad);color:#fff;font-weight:700;font-size:16px;display:flex;align-items:center;justify-content:center;box-shadow:0 6px 16px -4px rgba(26,103,223,.5)}
.step .body h3{font-size:16.5px;color:var(--ink);font-weight:700;margin-bottom:6px}
.step .body p{color:var(--gray);font-size:15px;line-height:1.8;margin:0}
.step .body .meta{display:inline-block;margin-top:10px;font-size:12.5px;font-weight:600;color:var(--brand);background:var(--brand-l);border-radius:999px;padding:3px 12px}

/* FAQ */
.faq{border-top:1px solid var(--line);margin-bottom:8px}
.faq details{border-bottom:1px solid var(--line);padding:4px 0;transition:background .2s}
.faq details:hover{background:#FAFCFF}
.faq summary{list-style:none;cursor:pointer;padding:20px 44px 20px 4px;position:relative;font-size:16.5px;font-weight:700;color:var(--ink);line-height:1.7}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";position:absolute;right:10px;top:28px;width:10px;height:10px;border-right:2px solid var(--gray-2);border-bottom:2px solid var(--gray-2);transform:rotate(45deg);transition:transform .25s}
.faq details[open] summary{color:var(--brand)}
.faq details[open] summary::after{transform:rotate(-135deg);top:32px;border-color:var(--brand)}
.faq .ans{padding:0 44px 22px 4px;color:var(--gray);font-size:15.5px;line-height:1.9}
.faq .ans p{margin-bottom:8px}

/* 引用/提示 */
.note{background:linear-gradient(135deg,#FFFCF2,#FFF8E8);border:1px solid #F3E3B3;border-radius:var(--r);padding:20px 24px;font-size:14.5px;color:#6B5320;line-height:1.85;margin:0 0 22px}
.note b{color:#8A6410}

/* CTA */
.cta{position:relative;overflow:hidden;background:var(--grad);color:#fff;border-radius:var(--r-lg);padding:60px 48px;text-align:center;box-shadow:0 24px 60px -18px rgba(16,66,160,.5)}
.cta::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.07) 1px,transparent 1px);background-size:42px 42px;mask-image:radial-gradient(ellipse at center,#000 25%,transparent 78%);-webkit-mask-image:radial-gradient(ellipse at center,#000 25%,transparent 78%)}
.cta::after{content:"";position:absolute;right:-90px;top:-90px;width:280px;height:280px;border-radius:50%;background:rgba(255,255,255,.1);filter:blur(30px)}
.cta>*{position:relative;z-index:2}
.cta h2{font-size:clamp(23px,2.7vw,31px);font-weight:800;line-height:1.45}
.cta p{margin:16px auto 0;max-width:660px;color:rgba(255,255,255,.88);font-size:16px}
.cta .actions{justify-content:center}
/* CTA 内的三点承诺排版 */
.cta-points{display:flex;flex-wrap:wrap;justify-content:center;gap:10px 30px;margin-top:16px;font-size:16.5px;font-weight:600;color:rgba(255,255,255,.96)}
.cta-points li{position:relative;padding-left:20px;line-height:1.8}
.cta-points li::before{content:"";position:absolute;left:0;top:12px;width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.9)}
.cta-note{margin:14px auto 0;font-size:14.5px;color:rgba(255,255,255,.78)}

/* 页脚 */
.site-footer{background:#0A1526;color:#9BAAC2;padding:64px 0 0;margin-top:0;font-size:14.5px;position:relative;overflow:hidden}
.site-footer::before{content:"";position:absolute;left:50%;top:-260px;transform:translateX(-50%);width:720px;height:340px;border-radius:50%;background:radial-gradient(closest-side,rgba(26,103,223,.16),transparent);pointer-events:none}
.ft{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px;position:relative}
@media(max-width:860px){.ft{grid-template-columns:1fr 1fr;gap:30px}}
@media(max-width:560px){.ft{grid-template-columns:1fr}}
.ft h3{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px;letter-spacing:.3px}
.ft p{line-height:1.95;color:#8FA0B9}
.ft ul li{margin-bottom:10px}
.ft a{color:#9BAAC2;transition:color .2s}
.ft a:hover{color:#7FA9FF}
.ft .brandline{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.ft .brandline span{color:#fff;font-weight:700;font-size:16px;letter-spacing:.5px}
.ft .logo-chip{background:#fff;border-radius:10px;padding:6px 9px;display:inline-flex}
.ft .logo-chip img{width:86px}
.ft .tel{color:#fff;font-size:20px;font-weight:700;letter-spacing:.5px;display:inline-block;margin-bottom:6px}
.ft .tel:hover{color:#7FA9FF}
.ft-bottom{border-top:1px solid rgba(255,255,255,.08);padding:22px 0 26px;display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between;align-items:center;font-size:13.5px;color:#6E7F98;position:relative}
.ft-bottom a{color:#8FA0B9}
.ft-bottom a:hover{color:#7FA9FF}

/* 页面悬浮咨询 */
.float-call{position:fixed;right:20px;bottom:20px;z-index:70;display:inline-flex;align-items:center;gap:8px;background:var(--grad);color:#fff;padding:13px 20px;border-radius:999px;font-size:14px;font-weight:700;box-shadow:var(--sh-brand);transition:transform .22s,box-shadow .22s}
.float-call:hover{transform:translateY(-3px);box-shadow:0 16px 38px -8px rgba(26,103,223,.6)}
@media(max-width:600px){.float-call{padding:12px 16px;font-size:13px;right:12px;bottom:12px}}

/* 联系页 */
.contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:34px;align-items:start}
@media(max-width:860px){.contact-grid{grid-template-columns:1fr}}
.info-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px 28px;transition:box-shadow .25s,border-color .25s}
.info-card:hover{border-color:#C7D8F5;box-shadow:var(--sh-s)}
.info-card+.info-card{margin-top:16px}
.info-card h3{font-size:13px;color:var(--brand);font-weight:700;margin-bottom:8px;letter-spacing:1.4px}
.info-card p{color:#3B4B62;font-size:15.5px;line-height:1.9}
.info-card .big{font-size:27px;font-weight:800;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{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:28px;text-align:center;box-shadow:var(--sh-s)}
.qr .box{width:180px;height:180px;margin:0 auto 14px;border:1px solid var(--line-2);border-radius:14px;overflow:hidden;background:#FAFCFF;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:1px solid var(--line);border-radius:var(--r);padding:28px 30px;transition:transform .28s,box-shadow .28s,border-color .28s;overflow:hidden}
.post::after{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--grad);opacity:0;transition:opacity .28s}
.post:hover{transform:translateY(-4px);box-shadow:var(--sh-m);border-color:#C7D8F5}
.post:hover::after{opacity:1}
.post .meta{font-size:12.5px;color:var(--gray-2);display:flex;gap:12px;margin-bottom:12px}
.post .meta em{font-style:normal;font-weight:600;color:var(--brand);background:var(--brand-l);border-radius:999px;padding:3px 12px}
.post h2{font-size:19px;font-weight:800;color:var(--ink);line-height:1.55;margin-bottom:10px}
.post p{color:var(--gray);font-size:15px;line-height:1.85}

@media(max-width:768px){
  .sec{padding:44px 0}
  .hero-in{padding:60px 0 52px}
  .hero .stats{gap:12px;margin-top:40px}
  .pbanner{padding:38px 0 40px}
  .pbanner + .sec{padding-top:40px}
  .cta{padding:44px 24px}
  .doc h2{margin-top:42px}
}