/* ==========================================================================
   蜂尾AI超智员工系统 · 企业官网
   设计系统 Design System
   ========================================================================== */

:root{
  --blue:#0A62A8;
  --blue2:#1E86D4;
  --blue-soft:#EAF3FB;
  --deep:#061B33;
  --deep2:#0B2946;
  --orange:#F5841F;
  --red:#EE3B2B;
  --yellow:#FFB020;
  --grad:linear-gradient(135deg,#FFB020 0%,#F5841F 45%,#EE3B2B 100%);
  --ink:#101C2E;
  --ink2:#54657C;
  --ink3:#8C9AAD;
  --line:#E6ECF4;
  --line2:#D5E0EC;
  --soft:#F6F9FC;
  --white:#fff;
  --shadow-sm:0 2px 10px rgba(9,45,88,.05);
  --shadow:0 12px 34px rgba(9,45,88,.09);
  --shadow-lg:0 26px 64px rgba(9,45,88,.15);
  --r:16px;
  --r-lg:22px;
  --maxw:1200px;
  --nav-h:74px;
  --ease:cubic-bezier(.22,.7,.28,1);
}

*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:96px}
body{
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  color:var(--ink);background:var(--white);
  line-height:1.75;font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}
ul{list-style:none}
::selection{background:rgba(245,132,31,.22)}

/* ---------- 布局 ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px;width:100%}
.sec{padding:100px 0}
.sec.sm{padding:72px 0}
.sec.soft{background:var(--soft)}
.sec.dark{background:var(--deep);color:#fff}
.sec.grad-bg{background:linear-gradient(160deg,#061B33 0%,#0A2C4E 55%,#061B33 100%);color:#fff}

/* ---------- 排版 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12.5px;font-weight:700;letter-spacing:2.4px;text-transform:uppercase;color:var(--blue);
}
.eyebrow::before{content:"";width:24px;height:2px;background:var(--grad);border-radius:2px}
.sec.dark .eyebrow,.grad-bg .eyebrow{color:#7EC4FF}
h1,h2,h3,h4,h5{line-height:1.28;font-weight:700;letter-spacing:-.4px}
h2.t{font-size:clamp(26px,3vw,36px);margin:16px 0 16px}
h3.t{font-size:20px;font-weight:650;letter-spacing:-.2px}
.lead{font-size:16.5px;color:var(--ink2);max-width:680px;line-height:1.85}
.sec.dark .lead,.grad-bg .lead{color:#A9BFD6}
.sec-head{margin-bottom:54px}
.sec-head.center{text-align:center}
.sec-head.center .eyebrow{justify-content:center}
.sec-head.center .lead{margin-left:auto;margin-right:auto}
.caps{font-size:13px;color:var(--ink3);line-height:1.7}
.sec.dark .caps{color:#7E96AE}
.g{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 30px;border-radius:999px;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  border:1px solid transparent;transition:all .28s var(--ease);
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 26px rgba(240,110,40,.32)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 36px rgba(240,110,40,.42)}
.btn-dark{background:var(--deep);color:#fff}
.btn-dark:hover{background:var(--blue);transform:translateY(-2px)}
.btn-ghost{border-color:var(--line2);color:var(--ink);background:#fff}
.btn-ghost:hover{border-color:var(--blue);color:var(--blue);transform:translateY(-2px)}
.btn-line{border-color:rgba(255,255,255,.32);color:#fff}
.btn-line:hover{background:rgba(255,255,255,.13);border-color:rgba(255,255,255,.55)}
.btn-lg{height:56px;padding:0 36px;font-size:16px}
.btn .ar{transition:transform .28s var(--ease)}
.btn:hover .ar{transform:translateX(4px)}

/* ---------- 导航 ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:900;height:var(--nav-h);
  display:flex;align-items:center;
  transition:background .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
  border-bottom:1px solid transparent;
}
.nav .wrap{display:flex;align-items:center;gap:34px}
.nav-logo{display:flex;align-items:center;gap:11px;flex-shrink:0;min-width:0}
/* width:auto 必须保留：否则 HTML 上的 width=1024 属性会让 logo 被水平拉伸（蜂巢变椭圆）、并把菜单挤成竖排 */
.nav-logo img{height:30px;width:auto;max-width:178px;object-fit:contain}
.nav-logo .txt{display:none;font-size:16px;font-weight:700;letter-spacing:-.2px;white-space:nowrap}
.nav-menu{display:flex;gap:6px;margin-left:auto;align-items:center;flex-shrink:0}
.nav-menu a{
  padding:9px 14px;border-radius:10px;font-size:15px;font-weight:500;
  transition:all .22s var(--ease);position:relative;
  white-space:nowrap; /* 关键：空间不足时也不许逐字换行成竖排 */
}
.nav-cta{margin-left:14px}

/* 深色首屏上的导航（透明 → 滚动变白） */
.nav.over{background:transparent}
.nav.over .nav-menu a{color:#D6E4F2}
.nav.over .nav-menu a:hover{background:rgba(255,255,255,.12);color:#fff}
.nav.over .nav-menu a.active{color:#fff;background:rgba(255,255,255,.14)}
.nav.over.scrolled{background:rgba(255,255,255,.94);backdrop-filter:blur(14px);box-shadow:var(--shadow-sm);border-bottom-color:var(--line)}
.nav.over.scrolled .nav-menu a{color:var(--ink2)}
.nav.over.scrolled .nav-menu a:hover{background:var(--soft);color:var(--blue)}
.nav.over.scrolled .nav-menu a.active{color:var(--blue);background:var(--blue-soft)}
.nav.over .logo-w{display:block}
.nav.over .logo-c{display:none}
.nav.over.scrolled .logo-w{display:none}
.nav.over.scrolled .logo-c{display:block}

/* 内页导航（白底常驻） */
.nav.solid{background:rgba(255,255,255,.96);backdrop-filter:blur(14px);border-bottom-color:var(--line)}
.nav.solid.scrolled{box-shadow:var(--shadow-sm)}
.nav.solid .nav-menu a{color:var(--ink2)}
.nav.solid .nav-menu a:hover{background:var(--soft);color:var(--blue)}
.nav.solid .nav-menu a.active{color:var(--blue);background:var(--blue-soft)}
.nav.solid .logo-w{display:none}
.nav.solid .logo-c{display:block}

.nav-burger{
  display:none;margin-left:auto;width:42px;height:42px;border-radius:11px;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
  border:1px solid var(--line2);
}
.nav.over .nav-burger{border-color:rgba(255,255,255,.3)}
.nav-burger span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:.3s var(--ease)}
.nav.over .nav-burger span{background:#fff}
.nav.solid .nav-burger span,.nav.over.scrolled .nav-burger span{background:var(--ink)}
.nav-burger.on span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-burger.on span:nth-child(2){opacity:0}
.nav-burger.on span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* 移动端抽屉 */
.drawer{
  position:fixed;inset:var(--nav-h) 0 0 0;z-index:880;background:#fff;
  padding:20px 28px 40px;overflow-y:auto;
  transform:translateX(100%);transition:transform .34s var(--ease);
}
.drawer.open{transform:translateX(0)}
.drawer a{
  display:block;padding:17px 4px;font-size:17px;font-weight:600;
  border-bottom:1px solid var(--line);color:var(--ink);
}
.drawer a.active{color:var(--blue)}
.drawer .btn{width:100%;margin-top:26px}

/* ---------- Hero ---------- */
.hero{
  position:relative;min-height:660px;display:flex;align-items:center;overflow:hidden;
  background:var(--deep);color:#fff;padding:calc(var(--nav-h) + 60px) 0 70px;
}
.hero .bgimg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.62}
.hero .veil{
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(6,27,51,.96) 0%,rgba(6,27,51,.82) 44%,rgba(10,41,70,.5) 100%);
}
.hero .wrap{position:relative;z-index:2}
.hero .badge{
  display:inline-flex;align-items:center;gap:9px;height:36px;padding:0 17px;border-radius:999px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.19);
  font-size:13px;color:#CFE4F8;margin-bottom:28px;
}
.hero .badge em{width:7px;height:7px;border-radius:50%;background:#4ADE80;font-style:normal;flex-shrink:0}
.hero h1{font-size:clamp(32px,4.4vw,58px);line-height:1.15;letter-spacing:-1.6px;max-width:840px;margin-bottom:24px}
.hero p.sub{font-size:17.5px;color:#B4CBDF;max-width:620px;margin-bottom:38px;line-height:1.85}
.hero .cta{display:flex;gap:14px;flex-wrap:wrap}

/* 子页页头 */
.phead{
  position:relative;background:var(--deep);color:#fff;overflow:hidden;
  padding:calc(var(--nav-h) + 88px) 0 84px;
}
.phead .bgimg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.34}
.phead .veil{position:absolute;inset:0;background:linear-gradient(115deg,rgba(6,27,51,.96),rgba(10,41,70,.72))}
.phead .wrap{position:relative;z-index:2}
.phead h1{font-size:clamp(28px,3.6vw,46px);letter-spacing:-1.2px;margin:16px 0 18px}
.phead p{font-size:16.5px;color:#B4CBDF;max-width:660px;line-height:1.85}
.crumb{font-size:13px;color:#7E96AE;margin-bottom:6px}
.crumb a:hover{color:#fff}

/* ---------- 卡片 ---------- */
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r);
  padding:30px 28px;transition:all .3s var(--ease);
}
.card:hover{border-color:#C9DDF0;box-shadow:var(--shadow);transform:translateY(-4px)}
.card .ico{
  width:48px;height:48px;border-radius:13px;display:flex;align-items:center;justify-content:center;
  background:var(--blue-soft);color:var(--blue);font-size:20px;font-weight:700;margin-bottom:18px;
}
.card h4{font-size:17px;margin-bottom:9px;font-weight:650}
.card p{font-size:14px;color:var(--ink2);line-height:1.75}

.grid{display:grid;gap:20px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}

/* ---------- 数据 ---------- */
.stat b{display:block;font-size:32px;font-weight:700;letter-spacing:-.8px;line-height:1.2}
.stat span{font-size:13px;color:var(--ink2);display:block;margin-top:6px}
.stat.b b{color:var(--blue)}
.stat.o b{color:var(--orange)}
.sec.dark .stat span,.grad-bg .stat span{color:#9DB4CB}

.statbar{
  background:var(--deep);color:#fff;
  border-top:1px solid rgba(255,255,255,.12);
}
.statbar .wrap{display:grid;grid-template-columns:repeat(4,1fr)}
.statbar .st{padding:30px 0;padding-left:34px;border-left:1px solid rgba(255,255,255,.1)}
.statbar .st:first-child{border-left:none;padding-left:0}
.statbar .st b{display:block;font-size:34px;font-weight:700;letter-spacing:-1px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.statbar .st span{font-size:13px;color:#9DB4CB}

/* ---------- 表格 ---------- */
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);background:#fff}
table.tbl{width:100%;border-collapse:collapse;min-width:660px}
table.tbl th,table.tbl td{padding:17px 22px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--line)}
table.tbl thead th{background:var(--soft);font-weight:650;font-size:14px;color:var(--ink);white-space:nowrap}
table.tbl tbody tr:last-child td{border-bottom:none}
table.tbl td:first-child{color:var(--ink2)}
table.tbl .yes{color:var(--blue);font-weight:600}
table.tbl .hl{background:#FFFBF5}

/* ---------- 价格卡 ---------- */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:start}
.plan{
  border:1px solid var(--line);border-radius:var(--r-lg);background:#fff;padding:34px 30px 30px;
  position:relative;transition:all .3s var(--ease);
}
.plan:hover{box-shadow:var(--shadow);transform:translateY(-4px)}
.plan.hot{border-color:transparent;box-shadow:var(--shadow-lg);background:var(--deep);color:#fff;transform:scale(1.02)}
.plan.hot:hover{transform:scale(1.02) translateY(-4px)}
.plan .flag{
  position:absolute;top:-13px;left:30px;height:27px;padding:0 14px;border-radius:999px;
  background:var(--grad);color:#fff;font-size:12.5px;font-weight:650;display:inline-flex;align-items:center;
}
.plan h4{font-size:19px;font-weight:700;margin-bottom:6px}
.plan .desc{font-size:13.5px;color:var(--ink3);min-height:22px}
.plan.hot .desc{color:#8FA8C2}
.plan .price{display:flex;align-items:baseline;gap:6px;margin:22px 0 4px}
.plan .price b{font-size:44px;font-weight:700;letter-spacing:-1.6px;line-height:1}
.plan .price i{font-style:normal;font-size:14px;color:var(--ink3)}
.plan.hot .price i{color:#8FA8C2}
.plan .price.p b{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.plan ul{margin:22px 0 28px;border-top:1px solid var(--line);padding-top:22px}
.plan.hot ul{border-top-color:rgba(255,255,255,.14)}
.plan li{
  font-size:14px;color:var(--ink2);padding-left:24px;position:relative;margin-top:12px;line-height:1.7;
}
.plan.hot li{color:#B4CBDF}
.plan li::before{
  content:"";position:absolute;left:0;top:9px;width:14px;height:8px;
  border-left:2px solid var(--blue);border-bottom:2px solid var(--blue);
  transform:rotate(-45deg);border-radius:1px;
}
.plan.hot li::before{border-color:var(--orange)}
.plan .btn{width:100%}

/* ---------- 图 + 文 交替 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.split.rev .smedia{order:2}
.smedia img{border-radius:var(--r-lg);box-shadow:var(--shadow-lg);width:100%}
.split h3{font-size:clamp(22px,2.4vw,30px);letter-spacing:-.7px;margin-bottom:8px}
.split .sub2{font-size:15px;color:var(--orange);font-weight:600;margin-bottom:18px}
.split p.body{color:var(--ink2);font-size:15.5px;line-height:1.9}

.checks{margin-top:24px}
.checks li{
  position:relative;padding-left:28px;margin-top:13px;font-size:15px;color:var(--ink2);line-height:1.7;
}
.checks li b{color:var(--ink);font-weight:650}
.checks li::before{
  content:"";position:absolute;left:0;top:10px;width:7px;height:7px;border-radius:50%;background:var(--grad);
}
.chips{display:flex;flex-wrap:wrap;gap:9px;margin-top:18px}
.chip{
  padding:7px 15px;border-radius:999px;font-size:13px;font-weight:600;
  background:var(--blue-soft);color:var(--blue);
}
.chip.o{background:#FFF3E4;color:#C96A0C}

/* ---------- 案例 ---------- */
.case{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  transition:all .3s var(--ease);display:flex;flex-direction:column;
}
.case:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px);border-color:#C9DDF0}
.case .top{display:grid;grid-template-columns:150px 1fr;gap:0;background:var(--soft)}
.case .top img{width:100%;height:100%;object-fit:cover;min-height:150px}
.case .chat{max-height:230px;overflow:hidden;position:relative}
.case .chat img{width:100%;object-fit:cover;object-position:top}
.case .chat::after{content:"";position:absolute;inset:auto 0 0 0;height:56px;background:linear-gradient(transparent,#F6F9FC)}
.case .body{padding:24px 26px 26px;flex:1;display:flex;flex-direction:column}
.case .tagline{font-size:12.5px;color:var(--orange);font-weight:650;letter-spacing:.6px;margin-bottom:8px}
.case h4{font-size:18px;font-weight:700;margin-bottom:10px}
.case .quote{
  font-size:14px;color:var(--ink2);line-height:1.75;padding-left:13px;border-left:3px solid var(--line2);
  margin-bottom:20px;
}
.case .nums{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:auto;padding-top:18px;border-top:1px solid var(--line)}
.case .nums div{text-align:center}
.case .nums b{display:block;font-size:21px;font-weight:700;letter-spacing:-.6px;color:var(--blue)}
.case .nums span{font-size:12px;color:var(--ink3);display:block;margin-top:3px}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;padding:14px 0 0}
.timeline::before{
  content:"";position:absolute;left:0;right:0;top:96px;height:2px;
  background:linear-gradient(90deg,var(--blue-soft),var(--blue2),var(--orange),var(--red));
  border-radius:2px;opacity:.5;
}
.tl-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.tl{position:relative;padding-top:0}
.tl .yr{
  font-size:28px;font-weight:700;letter-spacing:-1px;color:var(--blue);
  padding-bottom:16px;
}
.tl .dot{
  position:absolute;top:76px;left:0;width:13px;height:13px;border-radius:50%;
  background:#fff;border:3px solid var(--blue);z-index:2;
}
.tl:last-child .dot{border-color:var(--orange)}
.tl .ct{padding-top:36px}
.tl .ct h4{font-size:16px;font-weight:650;margin-bottom:7px}
.tl .ct p{font-size:14px;color:var(--ink2);line-height:1.75}

/* ---------- 保证 / 服务 ---------- */
.guars{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.guar{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px 24px;text-align:center;transition:.3s var(--ease)}
.guar:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.guar .ico{width:46px;height:46px;margin:0 auto 15px;border-radius:13px;display:flex;align-items:center;justify-content:center;background:var(--blue-soft)}
.guar .ico img{width:24px;height:24px}
.guar h4{font-size:16px;font-weight:650;margin-bottom:7px}
.guar p{font-size:13.5px;color:var(--ink2);line-height:1.7}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;counter-reset:s}
.step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px 22px}
.step .n{
  width:38px;height:38px;border-radius:11px;display:flex;align-items:center;justify-content:center;
  background:var(--grad);color:#fff;font-weight:700;font-size:15px;margin-bottom:16px;
}
.step h4{font-size:15.5px;font-weight:650;margin-bottom:7px}
.step p{font-size:13px;color:var(--ink2);line-height:1.7}
.step::after{
  content:"";position:absolute;right:-11px;top:44px;width:8px;height:8px;
  border-top:2px solid var(--line2);border-right:2px solid var(--line2);transform:rotate(45deg);
}
.step:last-child::after{display:none}

/* ---------- 折叠 FAQ ---------- */
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  list-style:none;cursor:pointer;padding:22px 44px 22px 0;position:relative;
  font-size:16.5px;font-weight:600;transition:color .22s;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--blue)}
.faq summary::after{
  content:"";position:absolute;right:8px;top:29px;width:9px;height:9px;
  border-right:2px solid var(--ink3);border-bottom:2px solid var(--ink3);
  transform:rotate(45deg);transition:transform .28s var(--ease);
}
.faq details[open] summary::after{transform:rotate(-135deg);top:33px}
.faq details[open] summary{color:var(--blue)}
.faq .ans{padding:0 60px 24px 0;font-size:15px;color:var(--ink2);line-height:1.9}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:var(--deep);border-radius:var(--r-lg);padding:58px 52px;color:#fff;
  display:flex;align-items:center;gap:44px;flex-wrap:wrap;position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-90px;top:-90px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(245,132,31,.3),transparent 70%);
}
.cta-band::before{
  content:"";position:absolute;left:-60px;bottom:-110px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(10,98,168,.4),transparent 70%);
}
.cta-band h3{font-size:clamp(22px,2.6vw,30px);letter-spacing:-.7px;margin-bottom:10px;position:relative;z-index:2}
.cta-band p{color:#A9BFD6;font-size:15px;position:relative;z-index:2}
.cta-band .r{margin-left:auto;position:relative;z-index:2;display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.footer{background:#040F1D;color:#7E93AA;font-size:14px;padding:64px 0 0}
.footer .fgrid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:44px;padding-bottom:48px}
.footer .brand img{height:34px;width:auto;max-width:200px;object-fit:contain;margin-bottom:20px}
.footer .brand p{font-size:13.5px;line-height:1.9;color:#7E93AA;max-width:320px}
.footer h5{font-size:14px;color:#fff;font-weight:650;margin-bottom:18px;letter-spacing:.3px}
.footer li{margin-bottom:11px}
.footer a{font-size:13.5px;transition:color .22s}
.footer a:hover{color:#fff}
.footer .f-cta{
  display:inline-flex;align-items:center;gap:7px;margin-top:6px;
  height:40px;padding:0 18px;border-radius:999px;
  background:var(--grad);color:#fff;font-size:13.5px;font-weight:650;
  box-shadow:0 8px 20px rgba(240,110,40,.26);transition:.24s var(--ease);
}
.footer .f-cta:hover{transform:translateY(-2px);box-shadow:0 14px 28px rgba(240,110,40,.36)}
.footer .f-cta .ar{transition:transform .28s var(--ease)}
.footer .f-cta:hover .ar{transform:translateX(4px)}
.footer .bot{
  border-top:1px solid rgba(255,255,255,.09);padding:22px 0 28px;
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
  font-size:12.5px;color:#5F748C;
}
.footer .bot a:hover{color:#A9BFD6}

/* ---------- 预约提示浮层 ---------- */
.qr-modal{
  position:fixed;inset:0;z-index:1000;display:flex;align-items:center;justify-content:center;
  padding:24px;visibility:hidden;opacity:0;transition:opacity .28s var(--ease),visibility .28s;
}
.qr-modal.on{visibility:visible;opacity:1}
.qr-mask{position:absolute;inset:0;background:rgba(5,18,33,.66);backdrop-filter:blur(6px)}
.qr-card{
  position:relative;z-index:2;background:#fff;border-radius:26px;padding:38px 40px 34px;
  width:100%;max-width:400px;text-align:center;box-shadow:0 40px 90px rgba(0,0,0,.42);
  transform:translateY(16px) scale(.97);transition:transform .34s var(--ease);
}
.qr-modal.on .qr-card{transform:translateY(0) scale(1)}
.qr-card .close{
  position:absolute;top:16px;right:16px;width:36px;height:36px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;color:var(--ink3);
  transition:.22s;font-size:20px;line-height:1;
}
.qr-card .close:hover{background:var(--soft);color:var(--ink)}
.qr-card .mark{width:54px;margin:0 auto 18px}
.qr-card h4{font-size:22px;font-weight:700;letter-spacing:-.5px;margin-bottom:10px}
.qr-card .notice{
  margin:24px 0 4px;padding:22px 18px;border-radius:18px;
  background:linear-gradient(135deg,var(--blue-soft) 0%,#FFF 100%);
  border:1px solid var(--line2);
  font-size:20px;font-weight:700;line-height:1.5;letter-spacing:.2px;color:var(--blue);
}
.qr-card .foot{
  margin-top:22px;padding-top:20px;border-top:1px solid var(--line);
  font-size:13px;color:var(--ink3);line-height:1.8;
}
.qr-card .foot b{color:var(--blue);font-weight:650}

/* ---------- 滚动动效（渐进增强：无 JS 时内容照常可见） ---------- */
html.js .reveal{opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
html.js .reveal.in{opacity:1;transform:none}
html.js .reveal.d1{transition-delay:.08s}
html.js .reveal.d2{transition-delay:.16s}
html.js .reveal.d3{transition-delay:.24s}
html.js .reveal.d4{transition-delay:.32s}
@media(prefers-reduced-motion:reduce){
  html.js .reveal{opacity:1;transform:none;transition:none}
}

/* ---------- 杂项 ---------- */
.imgcard{border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow-lg)}
.imgcard img{width:100%}
.note{
  border-left:3px solid var(--orange);background:#FFF9F2;padding:18px 22px;
  border-radius:0 12px 12px 0;font-size:14px;color:#7A4A16;line-height:1.8;
}
.note b{color:#9A4E06}
.hr{height:1px;background:var(--line);border:none}
.two-col{display:grid;grid-template-columns:1.1fr 1fr;gap:56px;align-items:center}

/* ==========================================================================
   响应式
   ========================================================================== */
@media(max-width:1080px){
  .g4,.guars,.tl-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .step::after{display:none}
  .plans{grid-template-columns:1fr;max-width:520px;margin:0 auto}
  .plan.hot{transform:none}
  .plan.hot:hover{transform:translateY(-4px)}
  .split{gap:40px}
  .timeline::before{display:none}
  .tl .dot{position:static;display:block;margin-bottom:16px}
  .tl .yr{padding-bottom:6px}
  .tl .ct{padding-top:12px}
  .footer .fgrid{grid-template-columns:1fr 1fr;gap:34px}
}
/* 6 项导航在中等宽度下先收紧间距，避免挤爆（920px 以下才切汉堡菜单） */
@media(max-width:1160px){
  .nav-menu{gap:2px}
  .nav-menu a{padding:9px 10px;font-size:14.5px}
  .nav-cta{margin-left:10px;height:44px;padding:0 20px;font-size:14px}
  .nav-logo img{height:28px}
}
@media(max-width:920px){
  .nav-menu,.nav-cta{display:none}
  .nav-burger{display:flex}
  .nav.over,.nav.solid{background:rgba(255,255,255,.96);backdrop-filter:blur(14px);border-bottom-color:var(--line)}
  .nav.over .nav-menu a{color:var(--ink2)}
  .nav.over .logo-w{display:none}
  .nav.over .logo-c{display:block}
  .nav.over .nav-burger span{background:var(--ink)}
  .g3{grid-template-columns:repeat(2,1fr)}
  .two-col,.split{grid-template-columns:1fr;gap:34px}
  .split.rev .smedia{order:0}
  .statbar .wrap{grid-template-columns:repeat(2,1fr);gap:6px}
  .statbar .st{border-left:none;padding-left:0;padding:18px 0}
}
@media(max-width:680px){
  html{scroll-padding-top:82px}
  .sec{padding:62px 0}
  .sec.sm{padding:48px 0}
  .wrap{padding:0 20px}
  .hero{min-height:auto;padding:calc(var(--nav-h) + 46px) 0 56px}
  .hero h1{letter-spacing:-1px}
  .hero .cta .btn{flex:1;min-width:150px}
  .phead{padding:calc(var(--nav-h) + 56px) 0 56px}
  .g2,.g3,.g4,.guars,.steps,.tl-grid{grid-template-columns:1fr}
  .plans{max-width:none}
  .cta-band{padding:38px 26px;gap:26px}
  .cta-band .r{margin-left:0;width:100%}
  .cta-band .r .btn{flex:1}
  .footer .fgrid{grid-template-columns:1fr;gap:30px;padding-bottom:34px}
  .qr-card{padding:32px 24px 28px}
  .qr-card .notice{font-size:17px;padding:18px 14px}
}

/* ==========================================================================
   蜂尾资讯：列表页 + 文章页
   ========================================================================== */
.nfilter{margin:-26px 0 34px;gap:10px}
.nfilter .chip{border:1px solid transparent;cursor:pointer;transition:all .25s var(--ease)}
.nfilter .chip:hover{border-color:#C9DDF0}
.nfilter .chip.on{background:var(--grad);color:#fff;box-shadow:0 8px 20px rgba(240,110,40,.26)}

.ngrid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.ncard{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  display:flex;flex-direction:column;transition:all .3s var(--ease);
}
.ncard:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#C9DDF0}
.ncard.nhide{display:none}
.nthumb{display:block;background:var(--deep);overflow:hidden}
.nthumb img{width:100%;aspect-ratio:1200/630;object-fit:cover;transition:transform .5s var(--ease)}
.ncard:hover .nthumb img{transform:scale(1.04)}
.nbody{padding:24px 24px 26px;display:flex;flex-direction:column;flex:1}
.nmeta{display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--ink3);margin-bottom:13px}
.ncat{background:var(--blue-soft);color:var(--blue);font-weight:700;padding:4px 13px;border-radius:999px;font-size:12px}
.ncard h3{font-size:18px;line-height:1.45;margin-bottom:10px;letter-spacing:-.2px}
.ncard h3 a:hover{color:var(--blue)}
.ncard p{
  font-size:14px;color:var(--ink2);line-height:1.8;flex:1;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.nmore{margin-top:16px;font-size:14px;font-weight:650;color:var(--blue);display:inline-flex;gap:6px;align-items:center}
.nmore .ar{transition:transform .28s var(--ease)}
.ncard:hover .nmore .ar{transform:translateX(4px)}

/* ---------- 文章页 ---------- */
.art-sec{padding:132px 0 90px}
.art-sec>.wrap{max-width:1080px}
.art-head{padding-bottom:4px}
.art-head .crumb{color:var(--ink3);margin-bottom:18px}
.art-head .crumb a:hover{color:var(--blue)}
.art-head h1{font-size:clamp(26px,3.6vw,40px);margin:16px 0 16px;letter-spacing:-.6px}
.art-lead{font-size:17px;color:var(--ink2);line-height:1.85;max-width:820px}
.art-meta{
  display:flex;flex-wrap:wrap;gap:22px;margin-top:24px;font-size:13.5px;color:var(--ink3);
  border-top:1px solid var(--line);padding-top:18px;
}
.art-cover{width:100%;margin:34px auto 0;border-radius:var(--r-lg);box-shadow:var(--shadow)}
.art-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:54px;margin:52px 0 0;align-items:start}

.article{font-size:16.5px;color:#25344A;line-height:1.92;min-width:0}
.article .ap{margin:0 0 20px}
.article .ap b{color:var(--ink);font-weight:650}
.article .ah2{position:relative;font-size:23px;margin:48px 0 18px;padding-left:18px;letter-spacing:-.3px;color:var(--ink)}
.article .ah2::before{content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;border-radius:3px;background:var(--grad)}
.article .ah3{font-size:18px;margin:30px 0 12px;color:var(--deep2)}
.article .alist{margin:0 0 22px}
.article .alist li{position:relative;padding-left:26px;margin-bottom:11px;color:var(--ink2)}
.article .alist li:last-child{margin-bottom:0}
.article .alist li::before{content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:50%;background:var(--grad)}
.article .alist li b{color:var(--ink);font-weight:650}
.article .anote{margin:26px 0}
.article .tbl-wrap{margin:26px 0}
.article .aformula{
  margin:24px 0;padding:22px 26px;border-radius:14px;background:var(--deep);
  color:#E7F1FA;font-size:15.5px;line-height:2.05;font-weight:600;letter-spacing:.2px;
}

.art-side{position:sticky;top:104px;display:flex;flex-direction:column;gap:20px}
.toc{background:var(--soft);border:1px solid var(--line);border-radius:var(--r);padding:22px 22px 18px}
.toc-t{font-size:12.5px;font-weight:700;letter-spacing:1.8px;text-transform:uppercase;color:var(--blue);margin-bottom:12px}
.toc li{position:relative;padding-left:15px;font-size:13.5px;line-height:1.65;margin-bottom:10px}
.toc li:last-child{margin-bottom:0}
.toc li::before{content:"";position:absolute;left:0;top:.66em;width:5px;height:5px;border-radius:50%;background:var(--line2)}
.toc a{color:var(--ink2)}
.toc a:hover{color:var(--blue)}
.scard{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:24px 22px}
.scard h4{font-size:16px;margin-bottom:10px;letter-spacing:-.2px}
.scard p{font-size:13.5px;color:var(--ink2);line-height:1.8;margin-bottom:16px}
.scard .btn{width:100%;height:44px;font-size:14px;padding:0 18px}
.slist li{padding:11px 0;border-bottom:1px dashed var(--line);font-size:14px;line-height:1.6}
.slist li:last-child{border-bottom:none;padding-bottom:0}
.slist li a{display:block;color:var(--ink);font-weight:650}
.slist li a:hover{color:var(--blue)}
.slist li span{font-size:12px;color:var(--ink3)}

.pnav{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:56px 0 0}
.pn{border:1px solid var(--line);border-radius:var(--r);padding:20px 22px;background:#fff;transition:all .3s var(--ease);min-height:86px}
.pn:hover{border-color:#C9DDF0;box-shadow:var(--shadow);transform:translateY(-3px)}
.pn span{display:block;font-size:12.5px;color:var(--ink3);margin-bottom:6px}
.pn b{font-size:15px;font-weight:650;line-height:1.5;display:block;letter-spacing:-.2px}
.pn.next{text-align:right}
.pn.dis{border:none;background:none;min-height:0}

@media(max-width:1080px){
  .ngrid{grid-template-columns:repeat(2,1fr)}
  .art-grid{grid-template-columns:1fr;gap:40px}
  .art-side{position:static}
  .toc{display:none}
}
@media(max-width:680px){
  .ngrid{grid-template-columns:1fr;gap:22px}
  .nfilter{margin:-18px 0 26px}
  .pnav{grid-template-columns:1fr;gap:14px}
  .pn.next{text-align:left}
  .pn.dis{display:none}
  .art-sec{padding:calc(var(--nav-h) + 44px) 0 62px}
  .article{font-size:16px;line-height:1.88}
  .article .ah2{font-size:20px;margin:38px 0 14px}
  .article .aformula{font-size:14.5px;padding:18px 20px}
}