:root{
  --ink:#1f2130;
  --ink-2:#43465d;
  --muted:#6c6f85;
  --paper:#fffdf7;
  --card:#ffffff;
  --line:#e9e4d9;
  --purple:#7b5cff;
  --pink:#ff6b9d;
  --amber:#ffc437;
  --teal:#25c9b0;
  --blue:#4b8bff;
  --shadow:0 12px 32px rgba(31,33,48,.08);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:86px;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--ink);
  background-color:var(--paper);
  background-image:
    radial-gradient(circle at 6% 3%, rgba(123,92,255,.12), transparent 40%),
    radial-gradient(circle at 94% 10%, rgba(255,107,157,.12), transparent 38%),
    radial-gradient(circle at 14% 62%, rgba(37,201,176,.11), transparent 42%),
    radial-gradient(circle at 88% 82%, rgba(255,196,55,.13), transparent 42%);
  background-attachment:fixed;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{line-height:1.35;color:var(--ink);}
p{margin:0;}
a{color:inherit;}
img{max-width:100%;}
ul,ol{list-style:none;margin:0;padding:0;}
.container{width:100%;max-width:1180px;margin:0 auto;padding-left:20px;padding-right:20px;}
.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 28px;border-radius:14px;font-size:15.5px;font-weight:700;
  text-decoration:none;border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease;
  font-family:inherit;
}
.btn-primary{
  background:linear-gradient(135deg,#7b5cff,#4b8bff);color:#fff;
  box-shadow:0 8px 0 rgba(75,139,255,.24);
}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 12px 0 rgba(75,139,255,.22);}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 0 rgba(75,139,255,.26);}
.btn-outline{
  background:#fff;color:var(--ink);border:1.5px solid var(--ink);
  box-shadow:0 8px 0 rgba(31,33,48,.10);
}
.btn-outline:hover{transform:translateY(-3px);box-shadow:0 12px 0 rgba(31,33,48,.10);background:#fffdf7;}
.btn-ghost{background:rgba(123,92,255,.10);color:#5a3fe0;border:1px solid rgba(123,92,255,.28);}
.btn-ghost:hover{background:rgba(123,92,255,.18);}
.btn-sm{padding:9px 18px;font-size:14.5px;border-radius:12px;box-shadow:0 5px 0 rgba(75,139,255,.22);}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(255,253,247,.92);
  backdrop-filter:saturate(160%) blur(12px);
  border-bottom:1px solid rgba(233,228,217,.9);
}
.nav-bar{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:70px;position:relative;}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;font-weight:800;font-size:17px;color:var(--ink);flex:0 0 auto;}
.brand-logo{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;flex:0 0 auto;background:#fff;border:1px solid var(--line);border-radius:12px;padding:4px;}
.brand-logo img{max-width:100%;max-height:100%;object-fit:contain;display:block;}
.nav-links{display:flex;align-items:center;gap:0;}
.nav-links a{display:block;padding:8px 12px;border-radius:10px;font-size:15px;color:var(--ink-2);text-decoration:none;transition:color .2s,background .2s;white-space:nowrap;}
.nav-links a:hover{color:var(--ink);background:rgba(123,92,255,.10);}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:4px;
  width:42px;height:42px;padding:0 10px;background:#fff;
  border:1px solid var(--line);border-radius:12px;cursor:pointer;
}
.nav-toggle span{display:block;height:2px;background:var(--ink);border-radius:2px;transition:.25s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* 通用区块 */
.section{padding:66px 0;}
.section--tint{background:rgba(255,255,255,.66);border-top:1px solid rgba(233,228,217,.85);border-bottom:1px solid rgba(233,228,217,.85);}
.section-head{max-width:780px;margin:0 auto 38px;text-align:center;}
.section-head h2{font-size:clamp(23px,3.2vw,33px);margin:14px 0 12px;letter-spacing:-.01em;}
.section-head p{color:var(--muted);font-size:15.5px;}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.08em;
  color:#5a3fe0;background:rgba(123,92,255,.10);
  border:1px dashed rgba(123,92,255,.45);
  border-radius:999px;padding:5px 16px;
}

/* 首屏 */
.hero{position:relative;overflow:hidden;padding:74px 0 66px;}
.hero-shapes{position:absolute;inset:0;pointer-events:none;z-index:0;}
.hero-shapes span{position:absolute;border-radius:50%;opacity:.6;animation:floaty 9s ease-in-out infinite;}
.hero-shapes .s1{width:200px;height:200px;background:radial-gradient(circle,#ffc437,transparent 70%);top:-60px;left:3%;}
.hero-shapes .s2{width:240px;height:240px;background:radial-gradient(circle,#7b5cff,transparent 70%);top:26%;right:-60px;animation-delay:1.2s;}
.hero-shapes .s3{width:170px;height:170px;background:radial-gradient(circle,#ff6b9d,transparent 70%);bottom:-50px;left:14%;animation-delay:2.1s;}
.hero-shapes .s4{width:130px;height:130px;background:radial-gradient(circle,#25c9b0,transparent 70%);top:6%;right:24%;animation-delay:.6s;}
@keyframes floaty{0%,100%{transform:translateY(0);}50%{transform:translateY(-16px);}}
.hero-inner{position:relative;z-index:1;max-width:840px;margin:0 auto;text-align:center;}
.hero h1{font-size:clamp(28px,4.6vw,46px);margin:20px 0 18px;letter-spacing:-.015em;}
.hero-lead{font-size:clamp(15px,1.4vw,17px);color:var(--ink-2);max-width:700px;margin:0 auto 30px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:30px;}
.hero-chips li{
  font-size:13.5px;color:var(--ink-2);background:#fff;
  border:1px dashed rgba(123,92,255,.42);border-radius:999px;
  padding:6px 16px;box-shadow:0 5px 14px rgba(31,33,48,.05);
}

/* 数据指标 */
.stats{padding:0 0 10px;}
.stats-grid{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;
  background:#fff;border:1px solid var(--line);border-radius:22px;
  padding:26px 20px;box-shadow:var(--shadow);
}
.stat{text-align:center;position:relative;}
.stat + .stat::before{content:"";position:absolute;left:0;top:12%;height:76%;width:1px;background:var(--line);}
.stat-num{display:block;font-size:clamp(23px,2.6vw,31px);font-weight:800;color:var(--ink);letter-spacing:-.02em;}
.stat-label{display:block;font-size:13.5px;color:var(--muted);margin-top:4px;}

/* 关于我们 */
.about-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.about-card{
  background:#fff;border:1px solid var(--line);border-radius:18px;
  padding:24px 22px;box-shadow:0 6px 18px rgba(31,33,48,.05);
  transition:transform .22s ease,box-shadow .22s ease;
}
.about-card:hover{transform:translateY(-5px);box-shadow:0 18px 34px rgba(31,33,48,.10);}
.about-card .dot{display:inline-block;width:14px;height:14px;border-radius:5px;margin-bottom:12px;}
.dot-purple{background:var(--purple);}
.dot-pink{background:var(--pink);}
.dot-teal{background:var(--teal);}
.dot-amber{background:var(--amber);}
.dot-blue{background:var(--blue);}
.dot-ink{background:var(--ink);}
.about-card h3{font-size:17px;margin:0 0 8px;}
.about-card p{font-size:14.5px;color:var(--muted);}

.model-cloud{margin-top:28px;background:#fff;border:1px dashed rgba(123,92,255,.38);border-radius:20px;padding:24px 22px;}
.model-cloud h3{font-size:16px;margin:0 0 14px;}
.tag-list{display:flex;flex-wrap:wrap;gap:9px;}
.tag-list li{
  font-size:13px;color:var(--ink-2);background:#f7f4ec;
  border:1px solid var(--line);border-radius:999px;padding:5px 13px;
  transition:transform .18s ease,background .18s ease,color .18s ease;
}
.tag-list li:hover{transform:translateY(-2px);background:rgba(123,92,255,.10);color:#5a3fe0;}

/* 服务卡片 */
.service-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.service-card{
  position:relative;background:#fff;border:1px solid var(--line);
  border-radius:18px;padding:26px 22px 22px;overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.service-card::before{content:"";position:absolute;left:0;top:0;width:100%;height:5px;background:var(--accent,#7b5cff);}
.service-card:nth-child(4n+1){--accent:#7b5cff;}
.service-card:nth-child(4n+2){--accent:#ff6b9d;}
.service-card:nth-child(4n+3){--accent:#25c9b0;}
.service-card:nth-child(4n+4){--accent:#ffc437;}
.service-card:hover{transform:translateY(-6px);box-shadow:0 20px 36px rgba(31,33,48,.10);border-color:rgba(123,92,255,.25);}
.service-card h3{font-size:17px;margin:0 0 10px;}
.service-card p{font-size:14.5px;color:var(--muted);}

/* 一站式制作 */
.flow-steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;}
.flow-step{
  background:#fff;border:1px solid var(--line);border-radius:18px;
  padding:24px 20px;position:relative;transition:transform .22s ease,box-shadow .22s ease;
}
.flow-step:hover{transform:translateY(-5px);box-shadow:0 18px 32px rgba(31,33,48,.09);}
.flow-num{
  display:inline-block;font-size:13px;font-weight:800;color:#fff;
  background:linear-gradient(135deg,#7b5cff,#4b8bff);
  border-radius:10px;padding:3px 11px;margin-bottom:12px;
}
.flow-step h3{font-size:16px;margin:0 0 8px;}
.flow-step p{font-size:14px;color:var(--muted);}

/* 行业方案 */
.solution-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.solution-card{
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px 22px;
  border-left:5px solid var(--accent,#4b8bff);
  transition:transform .22s ease,box-shadow .22s ease;
}
.solution-card:nth-child(1){--accent:#4b8bff;}
.solution-card:nth-child(2){--accent:#ff6b9d;}
.solution-card:nth-child(3){--accent:#25c9b0;}
.solution-card:nth-child(4){--accent:#ffc437;}
.solution-card:nth-child(5){--accent:#7b5cff;}
.solution-card:nth-child(6){--accent:#1f2130;}
.solution-card:hover{transform:translateY(-5px);box-shadow:0 18px 32px rgba(31,33,48,.09);}
.solution-card h3{font-size:17px;margin:0 0 10px;}
.solution-card p{font-size:14.5px;color:var(--muted);}

/* 标准流程时间线 */
.timeline{position:relative;max-width:900px;margin:0 auto;padding-left:36px;}
.timeline::before{content:"";position:absolute;left:11px;top:8px;bottom:8px;width:2px;background:linear-gradient(180deg,rgba(123,92,255,.5),rgba(37,201,176,.45),rgba(255,196,55,.4));}
.timeline-item{position:relative;padding-bottom:24px;}
.timeline-item:last-child{padding-bottom:0;}
.timeline-item::before{
  content:"";position:absolute;left:-36px;top:6px;width:24px;height:24px;
  border-radius:50%;background:#fff;border:3px solid var(--purple);
}
.timeline-item:nth-child(2)::before{border-color:#ff6b9d;}
.timeline-item:nth-child(3)::before{border-color:#25c9b0;}
.timeline-item:nth-child(4)::before{border-color:#4b8bff;}
.timeline-item:nth-child(5)::before{border-color:#ffc437;}
.timeline-item:nth-child(6)::before{border-color:#1f2130;}
.timeline-box{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px 22px;transition:transform .22s ease,box-shadow .22s ease;}
.timeline-box:hover{transform:translateX(4px);box-shadow:0 14px 28px rgba(31,33,48,.08);}
.timeline-box h3{font-size:16px;margin:0 0 6px;}
.timeline-box p{font-size:14.5px;color:var(--muted);}

/* 服务网络 */
.channel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
.channel-card{
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;
  display:flex;flex-direction:column;gap:6px;text-decoration:none;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.channel-card:hover{transform:translateY(-5px);box-shadow:0 18px 32px rgba(31,33,48,.09);border-color:rgba(123,92,255,.3);}
.channel-card strong{font-size:16px;}
.channel-card .channel-val{font-size:14.5px;font-weight:700;color:#5a3fe0;word-break:break-all;}
.channel-card span.channel-desc{font-size:13.5px;color:var(--muted);}

/* 表格 */
.table-wrap{
  overflow-x:auto;-webkit-overflow-scrolling:touch;
  background:#fff;border:1px solid var(--line);border-radius:18px;
  box-shadow:0 6px 18px rgba(31,33,48,.05);
}
table{width:100%;border-collapse:collapse;min-width:780px;font-size:14.8px;}
th,td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top;color:var(--ink-2);}
thead th{background:#f7f4ec;color:var(--ink);font-weight:800;font-size:14.5px;}
tbody th{font-weight:700;color:var(--ink);background:#fcfaf4;white-space:nowrap;}
tbody tr:last-child th,tbody tr:last-child td{border-bottom:none;}
.highlight-col{background:rgba(123,92,255,.07);color:var(--ink);font-weight:700;}
.table-note{font-size:13px;color:var(--muted);margin-top:12px;}

/* 案例 */
.case-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.case-card{
  margin:0;background:#fff;border:1px solid var(--line);border-radius:20px;
  padding:16px;box-shadow:0 6px 18px rgba(31,33,48,.05);
  transition:transform .22s ease,box-shadow .22s ease;
}
.case-card:hover{transform:translateY(-6px);box-shadow:0 20px 36px rgba(31,33,48,.10);}
.case-media{
  aspect-ratio:4/3;background:#f7f4ec;border-radius:14px;overflow:hidden;
  display:flex;align-items:center;justify-content:center;
}
.case-media img{width:100%;height:100%;object-fit:contain;display:block;}
.case-card figcaption{padding:16px 6px 6px;}
.case-card h3{font-size:16.5px;margin:0 0 6px;}
.case-card p{font-size:14px;color:var(--muted);}

/* 对比评测 */
.compare-layout{display:grid;grid-template-columns:300px minmax(0,1fr);gap:24px;align-items:start;}
.rating-card{
  background:linear-gradient(160deg,#fff7e6,#ffffff 60%);
  border:1px solid var(--line);border-radius:22px;padding:28px 24px;
  box-shadow:var(--shadow);text-align:center;
}
.rating-stars{font-size:24px;letter-spacing:4px;color:#ffb703;line-height:1;}
.rating-title{font-size:15px;font-weight:800;margin:12px 0 6px;color:var(--ink);}
.rating-score{font-size:15px;color:var(--muted);margin:0;}
.rating-score strong{font-size:44px;font-weight:800;color:#5a3fe0;letter-spacing:-.02em;display:block;line-height:1.1;}
.rating-score span{display:block;font-size:13.5px;margin-top:4px;}
.rating-note{font-size:13.5px;color:var(--muted);margin-top:16px;padding-top:16px;border-top:1px dashed var(--line);}

/* 用户评论 */
.review-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.review-card{
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px 22px;
  display:flex;flex-direction:column;justify-content:space-between;gap:18px;
  transition:transform .22s ease,box-shadow .22s ease;
}
.review-card:hover{transform:translateY(-5px);box-shadow:0 18px 34px rgba(31,33,48,.10);}
.review-text{font-size:14.5px;color:var(--ink-2);}
.review-user{display:flex;align-items:center;gap:12px;}
.review-avatar{
  width:42px;height:42px;border-radius:14px;flex:0 0 auto;
  display:inline-flex;align-items:center;justify-content:center;
  font-weight:800;font-size:15px;color:#fff;background:#7b5cff;
}
.review-card:nth-child(2) .review-avatar{background:#ff6b9d;}
.review-card:nth-child(3) .review-avatar{background:#25c9b0;}
.review-card:nth-child(4) .review-avatar{background:#4b8bff;}
.review-card:nth-child(5) .review-avatar{background:#ffb703;color:#1f2130;}
.review-card:nth-child(6) .review-avatar{background:#1f2130;}
.review-user strong{display:block;font-size:14.5px;}
.review-user span{display:block;font-size:13px;color:var(--muted);}

/* 需求匹配 / 联系 */
.match-layout{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:26px;align-items:start;}
.form-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:28px 26px;box-shadow:var(--shadow);}
.form-card h2{font-size:22px;margin:0 0 8px;}
.form-card .form-sub{font-size:14px;color:var(--muted);margin-bottom:22px;}
.lead-form{display:flex;flex-direction:column;gap:16px;}
.form-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
.field{display:flex;flex-direction:column;gap:7px;}
.field label{font-size:13.5px;font-weight:700;color:var(--ink-2);}
.field input,.field select,.field textarea{
  font-family:inherit;font-size:14.5px;color:var(--ink);
  background:#fbf9f3;border:1px solid var(--line);border-radius:12px;
  padding:11px 14px;outline:none;transition:border-color .2s,box-shadow .2s,background .2s;
  width:100%;
}
.field textarea{resize:vertical;min-height:104px;}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:rgba(123,92,255,.55);background:#fff;
  box-shadow:0 0 0 4px rgba(123,92,255,.12);
}
.form-submit{width:100%;margin-top:4px;}
.contact-card{
  background:#fff;border:1px solid var(--line);border-radius:22px;padding:26px 24px;
  box-shadow:var(--shadow);
}
.contact-card h2{font-size:20px;margin:0 0 16px;}
.kf-box{
  display:flex;flex-direction:column;align-items:center;gap:10px;
  background:#fbf9f3;border:1px dashed rgba(123,92,255,.4);border-radius:16px;
  padding:18px;margin-bottom:20px;
}
.kf-box img{width:150px;max-width:100%;height:auto;border-radius:10px;display:block;background:#fff;}
.kf-box span{font-size:13.5px;color:var(--muted);}
.contact-list{display:flex;flex-direction:column;gap:12px;}
.contact-list li{font-size:14.5px;color:var(--ink-2);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;}
.contact-list li b{color:var(--ink);font-weight:700;}
.contact-list a{color:#5a3fe0;text-decoration:none;word-break:break-all;}
.contact-list a:hover{text-decoration:underline;}

/* 帮助中心 */
.help-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;}
.help-card{
  display:block;text-decoration:none;background:#fff;border:1px solid var(--line);
  border-radius:18px;padding:22px 20px;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.help-card:hover{transform:translateY(-5px);box-shadow:0 18px 32px rgba(31,33,48,.09);border-color:rgba(123,92,255,.3);}
.help-card strong{display:block;font-size:16px;margin-bottom:8px;}
.help-card span{display:block;font-size:13.5px;color:var(--muted);}

/* FAQ */
.faq-list{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:12px;}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;transition:border-color .2s,box-shadow .2s;}
.faq-item.open{border-color:rgba(123,92,255,.4);box-shadow:0 12px 26px rgba(31,33,48,.07);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:none;border:none;cursor:pointer;text-align:left;
  padding:17px 20px;font-family:inherit;font-size:15.5px;font-weight:700;color:var(--ink);
}
.faq-sign{position:relative;flex:0 0 auto;width:18px;height:18px;}
.faq-sign::before,.faq-sign::after{
  content:"";position:absolute;background:#7b5cff;border-radius:2px;transition:transform .25s ease,opacity .25s ease;
}
.faq-sign::before{left:0;top:8px;width:18px;height:2px;}
.faq-sign::after{left:8px;top:0;width:2px;height:18px;}
.faq-item.open .faq-sign::after{transform:rotate(90deg);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a p{padding:0 20px 18px;font-size:14.5px;color:var(--muted);}

/* AI百科 */
.wiki-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;}
.wiki-card{
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px 18px;
  transition:transform .22s ease,box-shadow .22s ease;
}
.wiki-card:hover{transform:translateY(-4px);box-shadow:0 16px 30px rgba(31,33,48,.08);}
.wiki-card h3{font-size:15.5px;margin:0 0 8px;color:#5a3fe0;}
.wiki-card p{font-size:13.5px;color:var(--muted);}

/* 行业资讯 */
.article-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
.article-card{
  display:block;text-decoration:none;background:#fff;border:1px solid var(--line);
  border-radius:18px;padding:22px 20px;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.article-card:hover{transform:translateY(-5px);box-shadow:0 18px 32px rgba(31,33,48,.09);border-color:rgba(75,139,255,.32);}
.article-card strong{display:block;font-size:15.5px;margin-bottom:8px;}
.article-card span{display:block;font-size:13.5px;color:var(--muted);}

/* 加盟代理 */
.join-card{
  background:linear-gradient(135deg,rgba(123,92,255,.10),rgba(255,107,157,.10) 55%,rgba(37,201,176,.12));
  border:1px solid rgba(123,92,255,.25);border-radius:24px;padding:36px 32px;
  display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:28px;align-items:center;
}
.join-card h2{font-size:clamp(21px,2.6vw,28px);margin:0 0 12px;}
.join-card p{font-size:15px;color:var(--ink-2);}
.join-points{display:flex;flex-direction:column;gap:10px;margin-top:18px;}
.join-points li{font-size:14.5px;color:var(--ink-2);}
.join-points li::before{content:"";display:inline-block;width:8px;height:8px;border-radius:3px;background:#7b5cff;margin-right:10px;vertical-align:middle;}
.join-action{text-align:center;display:flex;flex-direction:column;gap:12px;}
.join-action .btn{width:100%;}

/* 页脚 */
.site-footer{background:#1f2130;color:#c9cbdc;margin-top:20px;padding:52px 0 26px;}
.footer-inner{display:flex;flex-direction:column;gap:30px;}
.footer-main{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(0,1fr) minmax(0,1.2fr);gap:32px;}
.footer-brand .brand{color:#fff;margin-bottom:14px;}
.footer-brand .brand-logo{background:#2b2e42;border-color:#3a3e55;}
.footer-brand p{font-size:14px;color:#a8abc2;max-width:420px;}
.footer-col h3{font-size:15px;color:#fff;margin:0 0 14px;}
.footer-col ul{display:flex;flex-direction:column;gap:9px;}
.footer-col a{font-size:14px;color:#b6b9cf;text-decoration:none;transition:color .2s;}
.footer-col a:hover{color:#fff;text-decoration:underline;}
.friend-links{display:flex;flex-wrap:wrap;gap:8px 16px;}
.friend-links li{font-size:14px;}
.footer-bottom{
  border-top:1px solid #33364b;padding-top:20px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center;
}
.footer-bottom p{font-size:13px;color:#8f93ab;}
.footer-bottom a{color:#a9b0ff;text-decoration:none;}
.footer-bottom a:hover{color:#fff;text-decoration:underline;}

/* 浮动工具 */
.float-tools{position:fixed;right:18px;bottom:22px;z-index:80;display:flex;flex-direction:column;gap:10px;}
.float-btn{
  display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
  width:54px;height:54px;border-radius:16px;border:1px solid rgba(31,33,48,.12);
  background:#fff;color:var(--ink);cursor:pointer;text-decoration:none;
  box-shadow:0 10px 24px rgba(31,33,48,.14);
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease;
  font-family:inherit;font-size:11.5px;font-weight:700;
}
.float-btn:hover{transform:translateY(-3px);box-shadow:0 16px 30px rgba(31,33,48,.18);}
.float-btn svg{width:20px;height:20px;display:block;}
.float-kf{background:linear-gradient(135deg,#7b5cff,#4b8bff);color:#fff;border-color:transparent;}
#backTop{opacity:0;visibility:hidden;transform:translateY(10px);}
#backTop.show{opacity:1;visibility:visible;transform:translateY(0);}

/* 滚动渐入 */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .6s ease,transform .6s cubic-bezier(.22,.61,.36,1);}
.reveal.is-visible{opacity:1;transform:none;}

/* 响应式 */
@media (max-width:1024px){
  .site-nav{
    position:absolute;top:100%;left:0;right:0;
    background:#fffdf7;border-bottom:1px solid var(--line);
    box-shadow:0 20px 34px rgba(31,33,48,.12);
    padding:8px 20px 16px;display:none;
  }
  .site-nav.open{display:block;}
  .nav-links{flex-direction:column;align-items:stretch;gap:0;}
  .nav-links a{padding:12px 6px;border-bottom:1px dashed var(--line);font-size:15px;}
  .nav-links li:last-child a{border-bottom:none;}
  .nav-toggle{display:flex;}
  .about-grid,.service-grid,.solution-grid,.review-grid,.channel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .flow-steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .help-grid,.wiki-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .article-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .compare-layout{grid-template-columns:1fr;}
  .match-layout{grid-template-columns:1fr;}
  .join-card{grid-template-columns:1fr;}
  .footer-main{grid-template-columns:1fr 1fr;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:760px){
  .section{padding:52px 0;}
  .hero{padding:56px 0 50px;}
  .stats-grid{grid-template-columns:repeat(2,minmax(0,1fr));padding:22px 16px;gap:20px 12px;}
  .stat + .stat::before{display:none;}
  .about-grid,.service-grid,.solution-grid,.review-grid,.channel-grid,
  .flow-steps,.help-grid,.wiki-grid,.article-grid,.case-grid,.form-row{grid-template-columns:1fr;}
  .footer-main{grid-template-columns:1fr;}
  .join-card{padding:28px 22px;}
  .float-btn{width:48px;height:48px;border-radius:14px;}
  .hero-actions .btn{flex:1 1 160px;}
  .form-card,.contact-card{padding:22px 18px;}
  .timeline{padding-left:28px;}
  .timeline-item::before{left:-28px;width:20px;height:20px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  .hero-shapes span{animation:none;}
  *{transition-duration:.01ms !important;}
}