:root{
  --ink:#14162e;
  --ink2:#2c3154;
  --muted:#5b6188;
  --soft:#7a80a6;
  --line:rgba(20,22,46,.09);
  --violet:#7c3aed;
  --cyan:#06b6d4;
  --pink:#ec4899;
  --radius:18px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  color:var(--ink);
  background:#f7f8fe;
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  background:
    radial-gradient(620px 480px at 8% 2%, rgba(124,58,237,.18), transparent 68%),
    radial-gradient(560px 460px at 92% 8%, rgba(6,182,212,.16), transparent 70%),
    radial-gradient(720px 520px at 50% 56%, rgba(236,72,153,.10), transparent 72%),
    radial-gradient(620px 440px at 26% 96%, rgba(124,58,237,.11), transparent 72%),
    linear-gradient(180deg,#fbfaff 0%,#f5f8ff 42%,#fdf6fb 100%);
}
img{max-width:100%}
a{color:inherit}
.container{
  width:100%;
  max-width:1180px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
h1,h2,h3{color:var(--ink);letter-spacing:-.01em}
h2{font-size:clamp(24px,3.3vw,34px);line-height:1.35;margin:0 0 14px;font-weight:800}
h3{font-size:17px;line-height:1.5;margin:0 0 8px;font-weight:700}
p{margin:0}

/* 顶部导航 */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(20,22,46,.07);
  transition:box-shadow .3s ease;
}
.site-header.scrolled{box-shadow:0 8px 26px rgba(24,26,64,.09)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:68px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:800;font-size:17px;flex:0 0 auto}
.ai-page-logo{max-height:38px;width:auto;display:block}
.brand-text{white-space:nowrap}
.nav-wrap{display:flex;align-items:center;gap:8px}
.nav-links{display:flex;align-items:center;list-style:none;margin:0;padding:0;gap:0}
.nav-links li{list-style:none}
.nav-links a{display:block;padding:9px 12px;font-size:15px;color:#3a3f63;text-decoration:none;border-radius:10px;transition:color .2s ease,background .2s ease;white-space:nowrap}
.nav-links a:hover{color:#6d28d9;background:rgba(124,58,237,.08)}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;border:1px solid rgba(20,22,46,.12);background:#fff;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:5px;padding:0}
.nav-toggle span{display:block;width:18px;height:2px;background:#2c3154;border-radius:2px;transition:transform .25s ease,opacity .25s ease}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:999px;font-size:15px;font-weight:600;
  text-decoration:none;border:1px solid transparent;cursor:pointer;
  transition:transform .22s ease,box-shadow .26s ease,background .26s ease,color .26s ease,border-color .26s ease;
  white-space:nowrap;font-family:inherit;
}
.btn:active{transform:translateY(1px) scale(.99)}
.btn-primary{color:#fff;background:linear-gradient(120deg,#7c3aed,#5b6bff 45%,#06b6d4);box-shadow:0 10px 24px rgba(92,84,230,.30)}
.btn-primary:hover{box-shadow:0 16px 32px rgba(92,84,230,.42);transform:translateY(-2px)}
.btn-ghost{background:#fff;color:#2a2e55;border-color:rgba(20,22,46,.12);box-shadow:0 6px 18px rgba(30,32,80,.06)}
.btn-ghost:hover{border-color:rgba(124,58,237,.45);color:#6d28d9;transform:translateY(-2px)}
.btn-light{background:#fff;color:#2a1b6b;box-shadow:0 10px 24px rgba(10,10,40,.25)}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(10,10,40,.32)}
.nav-cta{padding:9px 20px;font-size:14px}

/* 通用区块 */
.section{padding:72px 0}
.section-head{max-width:780px;margin:0 auto 40px;text-align:center}
.section-head p{color:var(--muted);font-size:16px}
.eyebrow{
  display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.14em;
  color:#6d28d9;background:rgba(124,58,237,.09);
  padding:6px 15px;border-radius:999px;margin-bottom:14px;
}
.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)}
.card{
  background:#fff;border:1px solid rgba(20,22,46,.08);border-radius:16px;
  padding:24px;box-shadow:0 8px 24px rgba(30,32,80,.05);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:0 16px 36px rgba(60,50,160,.12);border-color:rgba(124,58,237,.26)}
.card p{color:var(--muted);font-size:15px;line-height:1.8}

/* 滚动渐入 */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .62s ease,transform .62s ease}
.reveal.in{opacity:1;transform:none}

/* 首屏 */
.hero{position:relative;padding:62px 0 56px;overflow:hidden}
.hero::before,.hero::after{content:"";position:absolute;border-radius:50%;filter:blur(64px);pointer-events:none;z-index:0}
.hero::before{width:420px;height:420px;background:radial-gradient(circle,rgba(124,58,237,.34),transparent 70%);left:-130px;top:-90px;animation:floatA 15s ease-in-out infinite}
.hero::after{width:460px;height:460px;background:radial-gradient(circle,rgba(6,182,212,.30),transparent 70%);right:-150px;top:50px;animation:floatB 17s ease-in-out infinite}
@keyframes floatA{0%,100%{transform:translate(0,0)}50%{transform:translate(32px,26px)}}
@keyframes floatB{0%,100%{transform:translate(0,0)}50%{transform:translate(-28px,32px)}}
.hero-inner{position:relative;z-index:2;max-width:900px;margin:0 auto;text-align:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:9px;font-size:13.5px;font-weight:600;
  color:#5b21b6;background:rgba(255,255,255,.92);
  border:1px solid rgba(124,58,237,.28);padding:7px 18px;border-radius:999px;
  box-shadow:0 6px 20px rgba(124,58,237,.13);
}
.hero-badge .dot{
  width:7px;height:7px;border-radius:50%;
  background:linear-gradient(135deg,#7c3aed,#06b6d4);
  box-shadow:0 0 0 4px rgba(124,58,237,.14);
  animation:pulseDot 2.4s ease-in-out infinite;
}
@keyframes pulseDot{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.55;transform:scale(.8)}}
.hero h1{font-size:clamp(29px,4.8vw,50px);line-height:1.22;margin:20px 0 18px;font-weight:800;color:#101229}
.hero-sub{max-width:740px;margin:0 auto;color:#4a5075;font-size:16.5px;line-height:1.9}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:30px}
.hero-note{margin-top:20px;font-size:13.5px;color:#7a80a6;letter-spacing:.02em}
.hero-stats{position:relative;z-index:2;display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:46px}
.stat{
  background:rgba(255,255,255,.9);border:1px solid rgba(20,22,46,.08);border-radius:16px;
  padding:20px 14px;text-align:center;box-shadow:0 10px 26px rgba(30,32,80,.06);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.stat:hover{transform:translateY(-4px);box-shadow:0 16px 34px rgba(70,60,170,.14);border-color:rgba(124,58,237,.24)}
.stat-num{display:block;font-size:clamp(22px,3.1vw,30px);font-weight:800;color:#6d28d9;line-height:1.3}
.stat-label{display:block;margin-top:4px;font-size:13.5px;color:#5b6188}

/* 关于我们 */
.about-grid{align-items:start}
.about-text p{color:var(--muted);font-size:15.5px;line-height:1.9;margin-bottom:16px}
.about-text .btn{margin-top:8px}
.cap-list{list-style:none;margin:16px 0 0;padding:0;display:grid;gap:16px}
.cap-list li{display:flex;gap:12px;align-items:flex-start}
.cap-dot{
  flex:0 0 auto;width:10px;height:10px;margin-top:8px;border-radius:50%;
  background:linear-gradient(135deg,#7c3aed,#06b6d4);
  box-shadow:0 0 0 4px rgba(124,58,237,.12);
}
.cap-list strong{display:block;font-size:15px;color:#1a1d3a;margin-bottom:2px}
.cap-list p{font-size:14px;color:var(--muted);line-height:1.7}

/* 服务卡片 */
.service-card{position:relative;overflow:hidden}
.service-icon{
  width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(124,58,237,.14),rgba(6,182,212,.14));
  color:#6d28d9;margin-bottom:14px;
}
.service-icon svg{display:block}
.model-wall{margin-top:28px;background:#fff;border:1px solid rgba(20,22,46,.08);border-radius:18px;padding:26px;box-shadow:0 10px 28px rgba(30,32,80,.05)}
.model-wall-title{font-size:15.5px;color:#2c3154;margin:0 0 16px}
.tags{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-block;padding:6px 14px;border-radius:999px;font-size:13.5px;color:#3b3f68;
  background:#fbfbff;border:1px solid rgba(20,22,46,.09);
  transition:color .22s ease,border-color .22s ease,transform .22s ease,box-shadow .22s ease;
}
.tag:hover{color:#6d28d9;border-color:rgba(124,58,237,.42);transform:translateY(-2px);box-shadow:0 8px 18px rgba(124,58,237,.14)}

/* 一站式制作 */
.studio-card{padding:0;overflow:hidden;display:flex;flex-direction:column}
.studio-media{
  aspect-ratio:16/10;background:linear-gradient(135deg,#f3f0ff,#e8f7ff);
  display:flex;align-items:center;justify-content:center;padding:10px;
}
.studio-media img{width:100%;height:100%;object-fit:contain;display:block;border-radius:10px;transition:transform .5s ease}
.studio-card:hover .studio-media img{transform:scale(1.03)}
.studio-body{padding:22px 24px 24px}
.studio-body p{color:var(--muted);font-size:15px;line-height:1.8;margin-bottom:14px}
.mini-tags{display:flex;flex-wrap:wrap;gap:8px}
.mini-tags span{
  font-size:12.5px;color:#5b21b6;background:rgba(124,58,237,.09);
  border-radius:999px;padding:4px 12px;
}
.scene-cloud{margin-top:26px;background:#fff;border:1px solid rgba(20,22,46,.08);border-radius:18px;padding:26px;box-shadow:0 10px 28px rgba(30,32,80,.05)}
.scene-cloud h3{font-size:15.5px;color:#2c3154;margin:0 0 16px}

/* 行业方案 */
.solution-card{padding:26px}
.solution-card h3{font-size:17.5px}
.solution-card p{color:var(--muted);font-size:15px;line-height:1.8}

/* 服务网络 */
.net-card{padding:22px 24px}
.net-card h3{font-size:16px;color:#1a1d3a;margin-bottom:6px}
.net-city{font-size:14px;color:var(--muted);line-height:1.8}
.net-tip{margin-top:22px;text-align:center;font-size:14.5px;color:#5b6188}

/* 标准流程 */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.step{
  background:#fff;border:1px solid rgba(20,22,46,.08);border-radius:16px;padding:22px 18px;
  box-shadow:0 8px 22px rgba(30,32,80,.05);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.step:hover{transform:translateY(-4px);box-shadow:0 16px 34px rgba(70,60,170,.12);border-color:rgba(124,58,237,.24)}
.step-num{
  display:inline-block;font-size:13px;font-weight:800;color:#6d28d9;
  background:rgba(124,58,237,.1);border-radius:8px;padding:3px 10px;margin-bottom:12px;
}
.step h3{font-size:16px;margin-bottom:6px}
.step p{color:var(--muted);font-size:14px;line-height:1.75}

/* 案例中心 */
.case-visual{
  background:linear-gradient(135deg,#f4f1ff,#eaf8ff);
  border:1px solid rgba(20,22,46,.07);border-radius:20px;padding:14px;
  box-shadow:0 12px 32px rgba(30,32,80,.06);margin-bottom:24px;
}
.case-visual img{width:100%;height:auto;display:block;border-radius:12px}
.case-card p{color:var(--muted);font-size:15px;line-height:1.8}

/* 对比评测 */
.score-wrap{display:grid;grid-template-columns:300px 1fr;gap:24px;margin-bottom:28px;align-items:stretch}
.score-card{
  background:linear-gradient(150deg,#ffffff,#f6f3ff);
  border:1px solid rgba(124,58,237,.2);border-radius:20px;padding:28px 24px;
  text-align:center;box-shadow:0 14px 34px rgba(90,70,200,.10);
  display:flex;flex-direction:column;justify-content:center;gap:8px;
}
.score-stars{color:#f59e0b;font-size:22px;letter-spacing:5px;line-height:1}
.score-num{font-size:48px;font-weight:800;color:#14162e;line-height:1.05}
.score-num span{font-size:17px;font-weight:600;color:#7a80a6}
.score-label{font-size:14px;color:#5b6188}
.adv-card{padding:26px}
.adv-card h3{font-size:16px;margin-bottom:14px}
.adv-list{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.adv-list li{display:flex;gap:10px;font-size:15px;color:#3a3f63;line-height:1.7}
.adv-list li::before{
  content:"";flex:0 0 auto;width:8px;height:8px;margin-top:8px;border-radius:50%;
  background:linear-gradient(135deg,#7c3aed,#06b6d4);
}
.table-wrap{
  overflow-x:auto;-webkit-overflow-scrolling:touch;
  background:#fff;border:1px solid rgba(20,22,46,.08);border-radius:18px;
  box-shadow:0 10px 28px rgba(30,32,80,.06);
}
table{width:100%;border-collapse:collapse;min-width:780px;font-size:15px}
th,td{padding:14px 18px;text-align:left;border-bottom:1px solid rgba(20,22,46,.07);vertical-align:top}
thead th{
  background:linear-gradient(135deg,rgba(124,58,237,.10),rgba(6,182,212,.10));
  color:#2c3154;font-weight:700;font-size:14.5px;white-space:nowrap;
}
tbody tr:last-child td{border-bottom:none}
tbody tr:hover td{background:rgba(124,58,237,.04)}
td strong{color:#6d28d9;font-weight:700}
td{color:#3a3f63;line-height:1.7}

/* Token 比价 */
.token-note{margin-top:18px;text-align:center;font-size:14px;color:#7a80a6}
.token-cta{margin-top:24px;text-align:center}

/* 表单 */
.form-wrap{
  background:#fff;border:1px solid rgba(20,22,46,.08);border-radius:22px;padding:30px;
  box-shadow:0 16px 44px rgba(30,32,80,.08);
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1/-1}
.field label{font-size:14px;font-weight:600;color:#2c3154}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border-radius:12px;border:1px solid rgba(20,22,46,.14);
  background:#fbfbff;font-size:15px;color:#14162e;font-family:inherit;
  transition:border-color .22s ease,box-shadow .22s ease,background .22s ease;
  outline:none;
}
.field textarea{min-height:120px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:#7c3aed;background:#fff;box-shadow:0 0 0 4px rgba(124,58,237,.12);
}
.form-actions{grid-column:1/-1;display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:4px}
.form-tip{font-size:13.5px;color:#7a80a6}

/* 用户评论 */
.review-card{display:flex;flex-direction:column;gap:14px}
.review-top{display:flex;align-items:center;gap:12px}
.avatar{
  width:44px;height:44px;border-radius:50%;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:16px;color:#fff;
  background:linear-gradient(135deg,#7c3aed,#06b6d4);
  box-shadow:0 6px 16px rgba(100,80,220,.24);
}
.review-name{font-size:15px;font-weight:700;color:#1a1d3a;line-height:1.4}
.review-role{font-size:13px;color:#7a80a6;line-height:1.5}
.review-text{color:#4a5075;font-size:15px;line-height:1.85}
.review-stars{color:#f59e0b;font-size:14px;letter-spacing:2px}

/* 帮助中心 */
.wiki{margin-top:26px;background:#fff;border:1px solid rgba(20,22,46,.08);border-radius:18px;padding:26px;box-shadow:0 10px 28px rgba(30,32,80,.05)}
.wiki h3{font-size:15.5px;color:#2c3154;margin:0 0 16px}

/* 行业资讯 */
.news-list{display:grid;gap:12px}
.news-item{
  display:flex;align-items:center;gap:16px;padding:18px 22px;background:#fff;
  border:1px solid rgba(20,22,46,.08);border-radius:14px;text-decoration:none;color:var(--ink);
  box-shadow:0 6px 18px rgba(30,32,80,.04);
  transition:transform .26s ease,border-color .26s ease,box-shadow .26s ease;
}
.news-item:hover{transform:translateX(4px);border-color:rgba(124,58,237,.3);box-shadow:0 12px 26px rgba(70,60,170,.1)}
.news-index{
  flex:0 0 auto;font-size:13px;font-weight:800;color:#6d28d9;
  background:rgba(124,58,237,.1);border-radius:8px;padding:3px 10px;
}
.news-title{flex:1;font-weight:600;font-size:15px;line-height:1.6}
.news-arrow{color:#8b90b3;font-size:18px;line-height:1}

/* FAQ */
.faq-item{
  background:#fff;border:1px solid rgba(20,22,46,.08);border-radius:14px;margin-bottom:12px;
  box-shadow:0 6px 18px rgba(30,32,80,.04);overflow:hidden;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.faq-item[open]{border-color:rgba(124,58,237,.3);box-shadow:0 12px 28px rgba(70,60,170,.1)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 56px 18px 22px;
  font-weight:600;color:#1a1d3a;position:relative;font-size:15.5px;line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:#7c3aed;line-height:1;transition:transform .25s ease;
}
.faq-item[open] summary::after{content:"−"}
.faq-answer{padding:0 22px 20px;color:var(--muted);font-size:15px;line-height:1.85}

/* 加盟代理 */
.join-box{
  position:relative;overflow:hidden;
  display:grid;grid-template-columns:1.12fr .88fr;gap:34px;align-items:center;
  background:linear-gradient(150deg,#2a1b6b 0%,#1b2a6b 48%,#0e3b6b 100%);
  border-radius:26px;padding:44px;box-shadow:0 22px 50px rgba(30,20,90,.26);
}
.join-box::after{
  content:"";position:absolute;width:380px;height:380px;border-radius:50%;
  background:radial-gradient(circle,rgba(124,58,237,.55),transparent 70%);
  right:-100px;top:-120px;pointer-events:none;
}
.join-text{position:relative;z-index:1}
.join-text h2{color:#fff;margin-bottom:14px}
.join-text p{color:#c8cbf2;font-size:15.5px;line-height:1.85;margin-bottom:22px}
.eyebrow-light{color:#e6e3ff;background:rgba(255,255,255,.14)}
.join-points{position:relative;z-index:1;display:grid;gap:14px}
.join-point{
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);
  border-radius:14px;padding:16px 18px;color:#eceeff;
  transition:background .26s ease,transform .26s ease;
}
.join-point:hover{background:rgba(255,255,255,.16);transform:translateY(-2px)}
.join-point strong{display:block;font-size:15px;color:#fff;margin-bottom:2px}
.join-point span{font-size:14px;color:#c8cbf2;line-height:1.7}

/* 联系我们 */
.contact-list{list-style:none;margin:16px 0 0;padding:0;display:grid;gap:12px}
.contact-list li{
  display:flex;align-items:flex-start;gap:12px;font-size:15px;
  padding-bottom:12px;border-bottom:1px dashed rgba(20,22,46,.1);
}
.contact-list li:last-child{border-bottom:none;padding-bottom:0}
.contact-list li span{flex:0 0 88px;color:#7a80a6;font-size:14px}
.contact-list li a,.contact-list li strong{color:#14162e;font-weight:600;text-decoration:none;word-break:break-all}
.contact-list li a:hover{color:#6d28d9}
.qr-card{text-align:center;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px}
.qr-card img{width:200px;max-width:100%;height:auto;display:block;border-radius:14px;border:1px solid rgba(20,22,46,.08)}
.qr-card p{font-size:14px;color:var(--muted);line-height:1.75}

/* 页脚 */
.site-footer{
  background:linear-gradient(160deg,#171a35 0%,#101227 100%);
  color:#c7cbe8;padding:48px 0 0;margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1fr 1.5fr;gap:34px;padding-bottom:32px}
.footer-brand strong{display:block;font-size:18px;color:#fff;margin-bottom:8px;letter-spacing:.02em}
.footer-brand p{font-size:14px;color:#a5aacb;line-height:1.8;margin-bottom:10px}
.footer-home{font-size:14px}
.footer-home a{color:#b7b0ff;text-decoration:none;font-weight:600}
.footer-home a:hover{color:#ffffff;text-decoration:underline}
.footer-links h3{font-size:14px;color:#fff;margin:0 0 14px;font-weight:700}
.friend-links{display:flex;flex-wrap:wrap;gap:10px 18px}
.friend-links a{font-size:13.5px;color:#a9b0e0;text-decoration:none;transition:color .22s ease}
.friend-links a:hover{color:#ffffff}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:18px 0;font-size:13px;color:#8f95bd;text-align:center;line-height:1.7;
}

/* 浮动客服 */
.float-widget{
  position:fixed;right:18px;bottom:22px;z-index:90;
  display:flex;flex-direction:column;align-items:flex-end;gap:10px;
}
.float-btn{
  width:46px;height:46px;border-radius:50%;border:none;cursor:pointer;
  background:#fff;color:#3a3f63;font-size:13px;font-weight:700;
  box-shadow:0 10px 24px rgba(30,32,80,.16);
  display:flex;align-items:center;justify-content:center;
  transition:transform .24s ease,box-shadow .24s ease,color .24s ease;
  font-family:inherit;
}
.float-btn:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(70,60,170,.24);color:#6d28d9}
#backTop{opacity:0;pointer-events:none;transition:opacity .3s ease,transform .24s ease,box-shadow .24s ease}
#backTop.show{opacity:1;pointer-events:auto}
.kefu-panel{
  display:none;width:182px;background:#fff;border-radius:16px;padding:14px;
  box-shadow:0 18px 42px rgba(30,32,80,.2);text-align:center;
  border:1px solid rgba(20,22,46,.07);
}
.kefu-panel.open{display:block;animation:fadeUp .26s ease}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.kefu-panel img{width:100%;height:auto;display:block;border-radius:10px;margin-bottom:8px}
.kefu-panel p{margin:0;font-size:12.5px;color:#4a5075;line-height:1.6}
.kefu-panel .kefu-extra{margin-top:6px;color:#7a80a6}

/* 响应式 */
@media (max-width:1020px){
  .nav-toggle{display:flex}
  .nav-wrap{
    position:fixed;left:0;right:0;top:68px;display:none;
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;padding:10px 20px 20px;
    border-bottom:1px solid rgba(20,22,46,.08);
    box-shadow:0 24px 40px rgba(24,26,64,.14);
    max-height:calc(100vh - 68px);overflow-y:auto;
  }
  .nav-wrap.open{display:flex}
  .nav-links{flex-direction:column;align-items:stretch}
  .nav-links a{padding:13px 4px;border-bottom:1px solid rgba(20,22,46,.06);border-radius:0}
  .nav-cta{margin-top:14px;width:100%}
  .g4{grid-template-columns:repeat(2,1fr)}
  .g3{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(3,1fr)}
  .score-wrap{grid-template-columns:1fr}
  .join-box{grid-template-columns:1fr;padding:34px 26px;gap:26px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
}
@media (max-width:860px){
  .hero-stats{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:760px){
  .section{padding:56px 0}
  .about-grid{grid-template-columns:1fr}
  .g2{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:560px){
  .g3,.g4{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .hero{padding:44px 0 40px}
  .hero-stats{gap:12px;margin-top:34px}
  .form-wrap{padding:22px}
  .score-num{font-size:40px}
  .news-item{padding:16px}
  .news-index{display:none}
  .contact-list li span{flex:0 0 78px}
}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .hero::before,.hero::after,.hero-badge .dot{animation:none}
}