:root{
  --red:#c81f2b;
  --red-deep:#8c0f1b;
  --red-soft:#ffece7;
  --ink:#2a1614;
  --ink-2:#5f4643;
  --muted:#7d6663;
  --line:#f1d8d2;
  --radius:16px;
  --shadow:0 12px 30px rgba(150,30,40,.08);
  --shadow-lg:0 18px 40px rgba(150,30,40,.16);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:88px;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background-color:#fff7f3;
  background-image:
    radial-gradient(880px 460px at 8% -6%, #ffe4dd 0%, rgba(255,228,221,0) 62%),
    radial-gradient(760px 420px at 96% 4%, #ffe8e1 0%, rgba(255,232,225,0) 58%);
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;}
h1,h2,h3{line-height:1.3;letter-spacing:.2px;}
a{color:var(--red-deep);}
.container{width:100%;max-width:1160px;margin:0 auto;padding:0 20px;}
.section{padding:64px 0;}
.section-alt{background:#ffece7;}
.section-head{max-width:780px;margin:0 0 34px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:700;
  letter-spacing:2px;
  color:var(--red-deep);
  background:#ffe3dd;
  border-radius:999px;
  padding:4px 14px;
  margin-bottom:14px;
}
.section-head h2{
  font-size:clamp(22px,3vw,32px);
  margin:0 0 12px;
  color:#231210;
  font-weight:800;
}
.section-desc{margin:0;color:var(--ink-2);font-size:15.5px;}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(255,247,243,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  position:relative;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:70px;
}
.brand{
  display:flex;align-items:center;gap:10px;
  text-decoration:none;color:var(--ink);
  font-weight:800;font-size:18px;flex:0 0 auto;
}
.ai-page-logo{width:36px;height:auto;display:block;border-radius:8px;}
.nav{display:flex;align-items:center;}
.nav-links{
  display:flex;align-items:center;
  gap:0;
  list-style:none;margin:0;padding:0;
}
.nav-links a{
  display:block;
  padding:8px 11px;
  font-size:14.5px;
  color:var(--ink-2);
  text-decoration:none;
  border-radius:8px;
  white-space:nowrap;
  transition:color .2s ease,background .2s ease;
}
.nav-links a:hover{color:var(--red);background:rgba(200,31,43,.08);}
.nav-cta{margin-left:14px;}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:42px;height:38px;padding:0 9px;
  background:#fff;border:1px solid var(--line);border-radius:10px;cursor:pointer;
}
.nav-toggle span{display:block;height:2px;background:#b8131f;border-radius:2px;transition:transform .25s ease,opacity .25s ease;}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:11px 24px;border-radius:999px;
  font-size:15px;font-weight:700;
  text-decoration:none;border:1px solid transparent;cursor:pointer;
  transition:transform .25s ease,box-shadow .25s ease,background .25s ease,color .25s ease;
}
.btn-lg{padding:14px 32px;font-size:16px;}
.btn-primary{
  background:linear-gradient(135deg,#dc2634,#a10f1c);
  color:#fff;
  box-shadow:0 10px 24px rgba(200,31,43,.28);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(200,31,43,.36);}
.btn-light{background:#fff;color:#b8131f;box-shadow:0 10px 26px rgba(80,8,14,.28);}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(80,8,14,.36);}
.btn-ghost{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.6);}
.btn-ghost:hover{background:rgba(255,255,255,.22);transform:translateY(-2px);}

/* ===== 首屏 ===== */
.hero{
  position:relative;overflow:hidden;
  background:radial-gradient(1200px 620px at 12% 0%, #d4232f 0%, #a3121d 48%, #7b0a13 100%);
  color:#fff;
  padding:88px 0 92px;
}
.hero::before{
  content:"";position:absolute;width:560px;height:560px;right:-170px;top:-200px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.20),rgba(255,255,255,0) 70%);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;width:360px;height:360px;left:-130px;bottom:-170px;border-radius:50%;
  border:1px solid rgba(255,255,255,.24);pointer-events:none;
}
.hero-inner{position:relative;z-index:1;}
.hero-badge{
  display:inline-block;
  font-size:13px;letter-spacing:2px;font-weight:700;
  color:#fff;
  background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.42);
  border-radius:999px;
  padding:5px 16px;margin-bottom:20px;
}
.hero h1{
  font-size:clamp(30px,5vw,52px);
  font-weight:800;
  margin:0 0 18px;
  max-width:760px;
  color:#fff;
}
.hero-sub{
  max-width:660px;
  margin:0 0 30px;
  font-size:clamp(15px,1.5vw,17px);
  color:rgba(255,255,255,.9);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px;}
.hero-tags{
  display:flex;flex-wrap:wrap;gap:10px;
  list-style:none;margin:0;padding:0;
}
.hero-tags li{
  font-size:13.5px;
  color:#fff;
  background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.32);
  border-radius:999px;
  padding:5px 14px;
}

/* ===== 指标卡 ===== */
.metrics{padding:46px 0 0;}
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.metric-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 20px;box-shadow:var(--shadow);
  transition:transform .3s ease,box-shadow .3s ease;
}
.metric-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);}
.metric-num{display:block;font-size:30px;font-weight:800;color:var(--red);line-height:1.2;letter-spacing:.5px;}
.metric-num.stars-num{font-size:22px;letter-spacing:3px;color:#d98218;}
.metric-label{margin:8px 0 0;font-size:14px;color:var(--ink-2);line-height:1.6;}

/* ===== 关于我们 ===== */
.about-grid{display:grid;grid-template-columns:1.02fr 1fr;gap:34px;align-items:start;}
.about-media{margin:0;background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;box-shadow:var(--shadow);}
.about-media img{width:100%;height:auto;display:block;}
.feature-list{list-style:none;margin:0;padding:0;display:grid;gap:14px;}
.feature-list li{
  background:#fff;border:1px solid var(--line);border-left:4px solid var(--red);
  border-radius:12px;padding:14px 16px;
  transition:transform .25s ease,box-shadow .25s ease;
}
.feature-list li:hover{transform:translateX(4px);box-shadow:var(--shadow);}
.feature-list strong{display:block;font-size:15.5px;color:#231210;margin-bottom:2px;}
.feature-list span{font-size:14px;color:var(--ink-2);line-height:1.65;}

/* ===== 通用卡片网格 ===== */
.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));gap:18px;}
.service-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 20px;box-shadow:var(--shadow);
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.service-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:#f0bdb4;}
.service-card h3{margin:0 0 10px;font-size:17px;color:#231210;font-weight:800;}
.service-card p{margin:0 0 14px;font-size:14.5px;color:var(--ink-2);line-height:1.7;}
.chip-row{display:flex;flex-wrap:wrap;gap:8px;}
.chip{
  font-size:12.5px;color:#a10f1c;background:#ffe9e4;
  border:1px solid #f7c9c0;border-radius:999px;padding:3px 11px;
}

/* ===== 一站式制作 ===== */
.flow-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-bottom:30px;}
.flow-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 22px;box-shadow:var(--shadow);
  transition:transform .3s ease,box-shadow .3s ease;
}
.flow-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);}
.flow-step{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,#dc2634,#a10f1c);
  color:#fff;font-weight:800;font-size:15px;margin-bottom:12px;
}
.flow-card h3{margin:0 0 8px;font-size:17px;color:#231210;}
.flow-card p{margin:0;font-size:14.5px;color:var(--ink-2);line-height:1.7;}
.tag-cloud{
  display:flex;flex-wrap:wrap;gap:10px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow);
}
.tag{
  font-size:13.5px;color:#5c2a26;background:#fff3ef;
  border:1px solid #f5d5cd;border-radius:999px;padding:5px 13px;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.tag:hover{background:#ffe1d9;color:#8c0f1b;transform:translateY(-2px);}

/* ===== 行业方案 ===== */
.solution-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;box-shadow:var(--shadow);
  transition:transform .3s ease,box-shadow .3s ease;
}
.solution-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);}
.solution-card h3{margin:0 0 8px;font-size:16.5px;color:#231210;}
.solution-card p{margin:0 0 12px;font-size:14.5px;color:var(--ink-2);line-height:1.7;}
.solution-tag{font-size:12.5px;color:#a10f1c;font-weight:700;}

/* ===== 服务网络 ===== */
.network-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px;}
.network-card{
  background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:18px 18px;box-shadow:var(--shadow);
  transition:transform .3s ease,box-shadow .3s ease;
}
.network-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);}
.network-card h3{margin:0 0 6px;font-size:14px;color:var(--muted);font-weight:700;letter-spacing:1px;}
.network-value{margin:0;font-size:16px;font-weight:700;color:#231210;word-break:break-all;}
.network-note{margin:6px 0 0;font-size:13.5px;color:var(--ink-2);}
.network-media{grid-column:span 1;background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px;box-shadow:var(--shadow);text-align:center;}
.network-media img{width:150px;height:auto;display:block;margin:0 auto 8px;border-radius:10px;}
.network-media p{margin:0;font-size:13.5px;color:var(--ink-2);}

/* ===== 标准流程 ===== */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.step-item{
  position:relative;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 20px 20px;box-shadow:var(--shadow);
  transition:transform .3s ease,box-shadow .3s ease;
}
.step-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);}
.step-no{
  position:absolute;top:-14px;left:20px;
  width:32px;height:32px;border-radius:50%;
  background:linear-gradient(135deg,#dc2634,#a10f1c);
  color:#fff;font-size:14px;font-weight:800;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 16px rgba(200,31,43,.28);
}
.step-item h3{margin:10px 0 8px;font-size:16px;color:#231210;}
.step-item p{margin:0;font-size:14.5px;color:var(--ink-2);line-height:1.7;}

/* ===== 案例中心 ===== */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.case-card{
  margin:0;background:#fff;border:1px solid var(--line);border-radius:16px;
  overflow:hidden;box-shadow:var(--shadow);
  transition:transform .3s ease,box-shadow .3s ease;
}
.case-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);}
.case-card img{width:100%;aspect-ratio:4/3;object-fit:cover;display:block;}
.case-card figcaption{
  padding:12px 16px;font-size:14.5px;font-weight:700;color:#231210;
  border-top:1px solid #f9ece8;
}

/* ===== 对比评测 ===== */
.score-panel{
  display:grid;grid-template-columns:.9fr 1.6fr;gap:26px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:20px;
  padding:26px 26px;box-shadow:var(--shadow);margin-bottom:26px;
}
.score-left{border-right:1px dashed #f0cfc8;padding-right:20px;}
.score-num{font-size:52px;font-weight:800;color:var(--red);line-height:1;}
.score-unit{font-size:16px;color:var(--muted);margin-left:4px;}
.score-stars{display:block;font-size:20px;color:#e29a24;letter-spacing:4px;margin-top:10px;}
.score-label{margin:6px 0 0;font-size:15px;font-weight:700;color:#231210;}
.score-right p{margin:0 0 16px;font-size:15px;color:var(--ink-2);line-height:1.8;}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:16px;background:#fff;box-shadow:var(--shadow);}
table{border-collapse:collapse;width:100%;min-width:720px;font-size:14.5px;}
th,td{padding:14px 16px;text-align:left;border-bottom:1px solid #f8e8e4;vertical-align:top;}
thead th{background:#ffece7;color:var(--red-deep);font-weight:800;}
tbody tr:last-child td{border-bottom:0;}
tbody tr:hover td{background:#fff6f3;}
td.best{color:#a10f1c;font-weight:700;}

/* ===== Token 比价 ===== */
.cost-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:18px;margin-bottom:24px;}
.cost-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;box-shadow:var(--shadow);
  transition:transform .3s ease,box-shadow .3s ease;
}
.cost-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);}
.cost-card h3{margin:0 0 8px;font-size:16px;color:#231210;}
.cost-card p{margin:0;font-size:14.5px;color:var(--ink-2);line-height:1.7;}

/* ===== 用户评论 ===== */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.review-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;box-shadow:var(--shadow);
  transition:transform .3s ease,box-shadow .3s ease;
}
.review-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);}
.review-card p{margin:0 0 16px;font-size:14.5px;color:var(--ink-2);line-height:1.8;}
.review-user{display:flex;align-items:center;gap:10px;}
.avatar{
  width:38px;height:38px;border-radius:50%;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#ffd9d2,#ffb8ab);
  color:#8c0f1b;font-weight:800;font-size:15px;
}
.review-name{font-size:14.5px;font-weight:700;color:#231210;line-height:1.4;}
.review-role{font-size:12.5px;color:var(--muted);line-height:1.4;}

/* ===== 加盟代理 CTA ===== */
.join-banner{
  position:relative;overflow:hidden;
  background:radial-gradient(900px 400px at 15% 0%, #d4232f 0%, #a3121d 55%, #7b0a13 100%);
  border-radius:22px;
  padding:34px 30px;
  color:#fff;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;
}
.join-banner::after{
  content:"";position:absolute;width:300px;height:300px;right:-90px;bottom:-140px;border-radius:50%;
  border:1px solid rgba(255,255,255,.24);pointer-events:none;
}
.join-text{max-width:640px;position:relative;z-index:1;}
.join-text h2{margin:0 0 10px;font-size:clamp(20px,2.6vw,26px);color:#fff;}
.join-text p{margin:0;font-size:15px;color:rgba(255,255,255,.9);line-height:1.75;}
.join-banner .btn{position:relative;z-index:1;}

/* ===== 表单 ===== */
.contact-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:24px;align-items:start;}
.form-card{
  background:#fff;border:1px solid var(--line);border-radius:20px;
  padding:26px;box-shadow:var(--shadow);
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.field{display:flex;flex-direction:column;gap:6px;}
.field.full{grid-column:1 / -1;}
.field label{font-size:14px;font-weight:700;color:var(--ink-2);}
input,select,textarea{
  width:100%;padding:11px 14px;
  border:1px solid #eed6d0;border-radius:10px;
  background:#fffdfc;font-size:15px;color:var(--ink);font-family:inherit;
  transition:border-color .2s ease,box-shadow .2s ease;
}
input:focus,select:focus,textarea:focus{outline:none;border-color:#e0837b;box-shadow:0 0 0 3px rgba(200,31,43,.12);}
textarea{min-height:112px;resize:vertical;}
.form-tip{margin:14px 0 0;font-size:13px;color:var(--muted);}
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:20px;
  padding:24px;box-shadow:var(--shadow);margin-bottom:18px;
}
.side-card h3{margin:0 0 10px;font-size:16.5px;color:#231210;}
.side-card p{margin:0 0 10px;font-size:14.5px;color:var(--ink-2);line-height:1.75;}
.side-card p:last-child{margin-bottom:0;}
.side-list{list-style:none;margin:0;padding:0;display:grid;gap:8px;}
.side-list li{font-size:14px;color:var(--ink-2);}
.side-list strong{color:#231210;}

/* ===== FAQ ===== */
.faq-list{display:grid;gap:12px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:14px;
  overflow:hidden;box-shadow:0 6px 16px rgba(150,30,40,.05);
  transition:border-color .25s ease,box-shadow .25s ease;
}
.faq-item.open{border-color:#f0bdb4;box-shadow:var(--shadow);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:16px 18px;background:transparent;border:0;cursor:pointer;
  font-size:15.5px;font-weight:700;color:#231210;text-align:left;font-family:inherit;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--red);}
.faq-icon{
  flex:0 0 auto;width:22px;height:22px;border-radius:50%;
  background:#ffe3dd;color:#a10f1c;
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:800;line-height:1;
  transition:transform .3s ease,background .3s ease;
}
.faq-item.open .faq-icon{transform:rotate(45deg);background:#f7c1b7;}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .35s ease;}
.faq-item.open .faq-a{grid-template-rows:1fr;}
.faq-a > div{overflow:hidden;}
.faq-a p{margin:0;padding:0 18px 18px;font-size:14.5px;color:var(--ink-2);line-height:1.8;}

/* ===== AI百科 / 帮助中心 ===== */
.wiki-card,.help-card{
  background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:20px;box-shadow:var(--shadow);
  transition:transform .3s ease,box-shadow .3s ease;
}
.wiki-card:hover,.help-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);}
.wiki-card h3,.help-card h3{margin:0 0 8px;font-size:16px;color:#231210;}
.wiki-card p,.help-card p{margin:0;font-size:14.5px;color:var(--ink-2);line-height:1.7;}

/* ===== 行业资讯 ===== */
.news-list{display:grid;gap:12px;}
.news-item{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:16px 20px;text-decoration:none;
  box-shadow:0 6px 16px rgba(150,30,40,.05);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.news-item:hover{transform:translateX(4px);box-shadow:var(--shadow);border-color:#f0bdb4;}
.news-title{font-size:15.5px;font-weight:700;color:#231210;}
.news-arrow{font-size:14px;color:var(--red);font-weight:700;flex:0 0 auto;}

/* ===== 页脚 ===== */
.site-footer{
  background:#fff1ec;
  border-top:3px solid var(--red);
  color:var(--ink);
  margin-top:0;
}
.footer-top{display:grid;grid-template-columns:1.05fr 1.2fr;gap:34px;padding:44px 0 26px;}
.footer-name{display:block;font-size:19px;font-weight:800;color:#231210;margin-bottom:8px;}
.footer-brand p{margin:0 0 8px;font-size:14.5px;color:var(--ink-2);line-height:1.75;}
.footer-contact a{color:var(--red-deep);text-decoration:none;font-weight:700;}
.footer-contact a:hover{text-decoration:underline;}
.footer-title{margin:0 0 12px;font-size:15px;color:#231210;font-weight:800;}
.friend-links{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px;}
.friend-links a{
  display:block;font-size:13.5px;color:#5f4643;text-decoration:none;
  background:#fff;border:1px solid var(--line);border-radius:999px;padding:4px 12px;
  transition:color .2s ease,border-color .2s ease,transform .2s ease;
}
.friend-links a:hover{color:var(--red-deep);border-color:#f0bdb4;transform:translateY(-2px);}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  border-top:1px solid #f3d9d2;padding:16px 0 24px;
  font-size:13.5px;color:#7d6663;
}
.ai-page-home-link{color:var(--red-deep);text-decoration:none;font-weight:700;}
.ai-page-home-link:hover{text-decoration:underline;}

/* ===== 浮动工具 ===== */
.float-tools{position:fixed;right:20px;bottom:28px;z-index:200;display:flex;flex-direction:column;gap:12px;}
.float-btn{
  width:52px;height:52px;border-radius:50%;border:0;cursor:pointer;
  background:linear-gradient(135deg,#dc2634,#a10f1c);color:#fff;
  font-size:13px;font-weight:700;font-family:inherit;
  box-shadow:0 10px 24px rgba(200,31,43,.34);
  transition:transform .25s ease,box-shadow .25s ease;
}
.float-btn:hover{transform:translateY(-3px);box-shadow:0 16px 30px rgba(200,31,43,.44);}
.top-btn{opacity:0;pointer-events:none;}
.top-btn.show{opacity:1;pointer-events:auto;}
.kefu-panel{
  position:fixed;right:20px;bottom:150px;z-index:200;
  width:190px;background:#fff;border:1px solid var(--line);border-radius:16px;
  padding:16px;text-align:center;box-shadow:0 20px 44px rgba(150,30,40,.2);
}
.kefu-panel img{width:140px;height:auto;display:block;margin:0 auto 10px;border-radius:10px;}
.kefu-panel p{margin:0 0 4px;font-size:13px;color:var(--ink-2);line-height:1.6;}
.kefu-panel p:last-child{margin-bottom:0;color:#a10f1c;font-weight:700;}

/* ===== 动效 ===== */
.js .reveal{opacity:0;transform:translateY(20px);}
.js .reveal.in{opacity:1;transform:none;transition:opacity .7s ease,transform .7s ease;}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  .js .reveal{opacity:1;transform:none;}
  .btn:hover,.metric-card:hover,.service-card:hover,.flow-card:hover,.solution-card:hover,.network-card:hover,.step-item:hover,.case-card:hover,.review-card:hover,.wiki-card:hover,.help-card:hover,.news-item:hover,.tag:hover,.friend-links a:hover,.float-btn:hover{transform:none;}
}

/* ===== 响应式 ===== */
@media (max-width:1080px){
  .nav{
    position:absolute;top:100%;left:0;right:0;
    display:none;flex-direction:column;align-items:stretch;
    background:#fff;border-bottom:1px solid var(--line);
    box-shadow:0 18px 34px rgba(150,30,40,.14);
    padding:10px 20px 18px;
  }
  .nav.open{display:flex;}
  .nav-links{flex-direction:column;align-items:stretch;gap:0;}
  .nav-links a{padding:11px 6px;border-bottom:1px solid #f7e7e3;border-radius:0;}
  .nav-cta{margin:14px 0 0;}
  .nav-toggle{display:flex;}
}
@media (max-width:900px){
  .metric-grid{grid-template-columns:repeat(2,1fr);}
  .about-grid{grid-template-columns:1fr;gap:24px;}
  .flow-grid{grid-template-columns:1fr;gap:16px;}
  .steps{grid-template-columns:1fr 1fr;gap:20px 16px;}
  .case-grid{grid-template-columns:1fr 1fr;}
  .review-grid{grid-template-columns:1fr 1fr;}
  .score-panel{grid-template-columns:1fr;gap:18px;}
  .score-left{border-right:0;border-bottom:1px dashed #f0cfc8;padding:0 0 16px;}
  .contact-grid{grid-template-columns:1fr;}
  .footer-top{grid-template-columns:1fr;gap:24px;padding:36px 0 22px;}
}
@media (max-width:640px){
  .section{padding:48px 0;}
  .hero{padding:64px 0 68px;}
  .metrics{padding:34px 0 0;}
  .metric-grid{grid-template-columns:1fr;gap:14px;}
  .metric-card{padding:18px;}
  .steps{grid-template-columns:1fr;}
  .case-grid{grid-template-columns:1fr;}
  .review-grid{grid-template-columns:1fr;}
  .form-grid{grid-template-columns:1fr;}
  .join-banner{padding:26px 20px;}
  .hero-actions .btn{width:100%;}
  .float-btn{width:46px;height:46px;font-size:12px;}
  .kefu-panel{width:172px;right:14px;bottom:140px;}
  .float-tools{right:14px;bottom:20px;}
}