:root{
  --ink:#171a2b;
  --ink-2:#333a52;
  --muted:#5f6479;
  --line:#e7e4f1;
  --violet:#6d5cf0;
  --pink:#f2599b;
  --cyan:#12b7c9;
  --amber:#f7962b;
  --green:#2fb96a;
  --radius:18px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:92px;background:#fbfaff;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
  font-size:16px;
  line-height:1.68;
  color:var(--ink);
  background-color:#fbfaff;
  background-image:
    radial-gradient(50rem 30rem at 8% 0%, rgba(109,92,240,.15), transparent 62%),
    radial-gradient(42rem 26rem at 94% 4%, rgba(242,89,155,.12), transparent 60%),
    radial-gradient(56rem 34rem at 50% 100%, rgba(18,183,201,.13), transparent 64%),
    linear-gradient(180deg,#fbfaff 0%,#f7f5fd 50%,#fbfaff 100%);
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;}
a{color:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.28;letter-spacing:-.01em;color:var(--ink);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px;}

/* 通用按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:12px;font-size:15px;font-weight:700;
  text-decoration:none;border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease;
  white-space:nowrap;font-family:inherit;
}
.btn-primary{color:#fff;background:linear-gradient(120deg,#6d5cf0,#a34ce0 52%,#f2599b);box-shadow:0 10px 24px rgba(109,92,240,.28);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(109,92,240,.36);}
.btn-ghost{color:var(--ink);background:#fff;border-color:var(--line);}
.btn-ghost:hover{transform:translateY(-2px);border-color:#c9c1f0;box-shadow:0 12px 26px rgba(38,26,90,.1);}
.btn-sm{padding:9px 16px;font-size:13.5px;border-radius:10px;}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.88);
  backdrop-filter:saturate(160%) blur(12px);
  -webkit-backdrop-filter:saturate(160%) blur(12px);
  border-bottom:1px solid var(--line);
}
.nav-bar{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:72px;}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:none;}
.ai-page-logo{height:34px;width:auto;display:block;}
.brand-text{font-size:17px;font-weight:800;letter-spacing:.04em;color:var(--ink);white-space:nowrap;}
.nav-panel{display:block;}
.nav-links{display:flex;align-items:center;gap:0;flex-wrap:nowrap;}
.nav-links a{
  display:block;padding:8px 10px;font-size:13.5px;font-weight:600;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(--violet);background:rgba(109,92,240,.09);}
.nav-actions{display:flex;align-items:center;gap:10px;flex:none;}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:11px;border:1px solid var(--line);
  background:#fff;cursor:pointer;padding:0;color:var(--ink);
}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;transition:transform .2s ease;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* 区块通用 */
.section{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:32px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:800;letter-spacing:.16em;color:#6b4fe0;
  margin-bottom:12px;
}
.eyebrow::before{
  content:"";width:22px;height:3px;border-radius:2px;
  background:linear-gradient(90deg,#6d5cf0,#f2599b 55%,#f7962b);
}
.section-head h2{font-size:clamp(23px,3vw,33px);}
.section-desc{margin-top:14px;color:var(--muted);font-size:15px;line-height:1.78;}

/* 首屏 */
.hero{padding:56px 0 8px;}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:48px;align-items:center;}
.hero-copy h1{font-size:clamp(30px,4.2vw,46px);font-weight:800;letter-spacing:-.02em;}
.hero-lead{margin-top:20px;color:var(--muted);font-size:16px;line-height:1.8;max-width:34em;}
.hero-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:26px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px 20px;margin-top:26px;}
.hero-badges li{display:flex;align-items:center;gap:8px;font-size:13.5px;font-weight:600;color:var(--ink-2);}
.hero-badges li::before{content:"";width:6px;height:6px;border-radius:50%;background:linear-gradient(135deg,#6d5cf0,#f2599b);flex:none;}
.hero-panel{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:24px;
  padding:24px;box-shadow:0 24px 50px rgba(58,42,120,.1);overflow:hidden;
}
.hero-panel::before{
  content:"";position:absolute;left:0;right:0;top:0;height:5px;
  background:linear-gradient(90deg,#6d5cf0,#f2599b 34%,#f7962b 60%,#12b7c9 100%);
}
.hero-panel-top{display:flex;align-items:center;gap:8px;margin-bottom:18px;}
.pill{display:inline-block;padding:5px 12px;border-radius:999px;font-size:12px;font-weight:700;color:#4a37c4;background:#f2eeff;}
.pill-soft{color:#0e7d8b;background:#e6f8fa;}
.hero-metrics{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.metric{background:#f8f6ff;border:1px solid #eeebfa;border-radius:14px;padding:14px 16px;transition:transform .22s ease,background .22s ease;}
.metric:hover{transform:translateY(-3px);background:#f3effd;}
.metric b{display:block;font-size:22px;font-weight:800;color:#3f2fb8;letter-spacing:-.01em;}
.metric span{font-size:12.5px;color:var(--muted);}
.hero-models{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.hero-models span{font-size:12px;font-weight:600;padding:5px 10px;border-radius:999px;background:#f5f3ff;color:#5a49c9;}

/* 卡片网格 */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:0 6px 20px rgba(38,26,90,.05);overflow:hidden;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.card::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--tone,#6d5cf0);}
.card:hover{transform:translateY(-4px);box-shadow:0 18px 38px rgba(38,26,90,.12);border-color:#dad3f6;}
.card-dot{width:11px;height:11px;border-radius:50%;background:var(--tone,#6d5cf0);box-shadow:0 0 0 5px rgba(109,92,240,.1);margin-bottom:16px;}
.card h3{font-size:17px;margin-bottom:9px;}
.card p{font-size:14px;color:var(--muted);line-height:1.72;}
.tag{
  display:inline-block;margin-top:14px;font-size:12px;font-weight:700;
  padding:4px 10px;border-radius:999px;background:#f4f1fe;color:#5b49c9;
}
.t1{--tone:#6d5cf0;}
.t2{--tone:#f2599b;}
.t3{--tone:#12b7c9;}
.t4{--tone:#f7962b;}
.t5{--tone:#2fb96a;}

/* 关于我们 */
.about-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:36px;align-items:start;}
.about-copy p{color:var(--muted);font-size:15px;line-height:1.82;margin-top:16px;}
.about-copy .btn{margin-top:24px;}
.about-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:24px;box-shadow:0 12px 30px rgba(38,26,90,.06);}
.about-card h3{font-size:16px;margin-bottom:16px;}
.about-card li{display:flex;gap:10px;padding:10px 0;font-size:14px;color:var(--ink-2);border-bottom:1px dashed #eeeaf9;}
.about-card li:last-child{border-bottom:0;padding-bottom:0;}
.about-card li::before{content:"";width:7px;height:7px;border-radius:50%;background:linear-gradient(135deg,#6d5cf0,#f2599b);margin-top:8px;flex:none;}
.cap-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:36px;}
.cap-item{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 18px;transition:transform .22s ease,box-shadow .22s ease;}
.cap-item:hover{transform:translateY(-3px);box-shadow:0 12px 26px rgba(38,26,90,.09);}
.cap-item strong{display:block;font-size:14.5px;margin-bottom:6px;}
.cap-item span{font-size:13px;color:var(--muted);line-height:1.62;display:block;}

/* 标签云 */
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.tag-cloud li{
  font-size:13px;font-weight:600;color:var(--ink-2);background:#fff;
  border:1px solid var(--line);border-radius:999px;padding:7px 14px;
  transition:color .2s ease,border-color .2s ease,transform .2s ease;
}
.tag-cloud li:hover{color:#4a37c4;border-color:#c9c1f0;transform:translateY(-2px);}

/* 分栏 + 图片 */
.split{display:grid;grid-template-columns:1.35fr .65fr;gap:32px;align-items:start;margin-top:32px;}
.steps{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.step{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;transition:transform .22s ease,box-shadow .22s ease;}
.step:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(38,26,90,.09);}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:30px;height:30px;border-radius:9px;font-size:13px;font-weight:800;color:#fff;
  background:linear-gradient(135deg,#6d5cf0,#a34ce0);margin-bottom:12px;
}
.step h3{font-size:15.5px;margin-bottom:7px;}
.step p{font-size:13.5px;color:var(--muted);line-height:1.68;}
.media-frame{
  margin:0;border-radius:16px;overflow:hidden;border:1px solid var(--line);
  background:linear-gradient(135deg,#efeaff,#ffeaf3);aspect-ratio:16/10;
}
.media-frame.square{aspect-ratio:1/1;}
.media-frame img{display:block;width:100%;height:100%;object-fit:contain;}

/* 服务网络 */
.network-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;}
.network-item{
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 18px;
  transition:border-color .2s ease,transform .2s ease;
}
.network-item:hover{border-color:#cfc7f3;transform:translateY(-2px);}
.network-item strong{display:block;font-size:14.5px;margin-bottom:4px;}
.network-item span{font-size:12.5px;color:var(--muted);}

/* 时间线 */
.timeline{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;margin-top:8px;}
.timeline li{position:relative;padding-top:34px;}
.timeline li::before{
  content:"";position:absolute;top:9px;left:20px;right:-18px;height:2px;
  background:linear-gradient(90deg,#d6cff5,#eee9fb);
}
.timeline li:last-child::before{display:none;}
.tl-dot{
  position:absolute;top:0;left:0;width:20px;height:20px;border-radius:50%;
  background:#fff;border:3px solid var(--tone,#6d5cf0);z-index:1;
}
.timeline h3{font-size:15px;margin-bottom:6px;}
.timeline p{font-size:13.5px;color:var(--muted);line-height:1.66;}

/* 案例 */
.case-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;}
.case-card{
  background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;
  transition:transform .25s ease,box-shadow .25s ease;
}
.case-card:hover{transform:translateY(-4px);box-shadow:0 18px 38px rgba(38,26,90,.12);}
.case-card .media-frame{border:0;border-radius:0;border-bottom:1px solid var(--line);}
.case-body{padding:18px 20px 22px;}
.case-body h3{font-size:16px;margin-bottom:7px;}
.case-body p{font-size:13.5px;color:var(--muted);line-height:1.7;}

/* 对比评测 */
.compare-grid{display:grid;grid-template-columns:.72fr 1.28fr;gap:26px;align-items:start;}
.score-card{
  background:linear-gradient(150deg,#241a5c,#4a2a86 55%,#8a2f7a);
  border-radius:20px;padding:28px;color:#fff;box-shadow:0 20px 44px rgba(48,28,110,.24);
}
.score-label{font-size:12.5px;letter-spacing:.18em;font-weight:700;color:#d9cffb;}
.stars{margin:12px 0 6px;font-size:19px;letter-spacing:.18em;color:#ffd166;}
.score-num{font-size:44px;font-weight:800;line-height:1;letter-spacing:-.02em;color:#fff;}
.score-num span{font-size:16px;font-weight:600;color:#cbbff5;margin-left:4px;}
.score-note{margin-top:14px;font-size:13.5px;line-height:1.72;color:#e7e1ff;}
.table-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:16px;background:#fff;}
.compare-table{border-collapse:collapse;width:100%;min-width:660px;}
.compare-table caption{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);}
.compare-table th,.compare-table td{
  padding:13px 16px;font-size:13.5px;text-align:left;vertical-align:top;
  border-bottom:1px solid var(--line);color:var(--ink-2);line-height:1.6;
}
.compare-table thead th{background:#f2eefc;font-size:13.5px;font-weight:800;color:#3a2b9e;}
.compare-table tbody th{font-weight:700;color:var(--ink);white-space:nowrap;}
.compare-table tbody tr:last-child th,.compare-table tbody tr:last-child td{border-bottom:0;}
.compare-table .highlight{background:#f7f4ff;color:#3d2fae;font-weight:700;}

/* 用户评价 */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.review-card{
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;
  transition:transform .25s ease,box-shadow .25s ease;display:flex;flex-direction:column;
}
.review-card:hover{transform:translateY(-4px);box-shadow:0 16px 34px rgba(38,26,90,.1);}
.review-stars{color:#f7962b;font-size:14px;letter-spacing:.14em;margin-bottom:10px;}
.review-text{font-size:14px;color:var(--ink-2);line-height:1.76;}
.review-user{margin-top:16px;padding-top:14px;border-top:1px dashed #ece8f8;font-size:13px;color:var(--muted);}
.review-user b{display:block;color:var(--ink);font-size:13.5px;margin-bottom:2px;}

/* 价格参考 */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.price-card{
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;
  display:flex;flex-direction:column;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.price-card:hover{transform:translateY(-4px);box-shadow:0 18px 36px rgba(38,26,90,.11);border-color:#d7cff4;}
.price-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:14px;}
.price-head h3{font-size:16.5px;}
.price-badge{font-size:11.5px;font-weight:800;padding:4px 10px;border-radius:999px;color:#4a37c4;background:#f2eeff;white-space:nowrap;}
.price-list li{position:relative;padding-left:18px;font-size:13.5px;color:var(--muted);line-height:1.7;margin-bottom:8px;}
.price-list li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;background:#d6cdf6;}
.price-note{margin-top:18px;font-size:13px;color:var(--muted);background:#f8f6ff;border:1px solid #eeebfa;border-radius:12px;padding:14px 16px;line-height:1.7;}

/* 帮助中心 */
.help-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.help-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;transition:transform .22s ease,box-shadow .22s ease;}
.help-card:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(38,26,90,.09);}
.help-card h3{font-size:15.5px;margin-bottom:8px;}
.help-card p{font-size:13.5px;color:var(--muted);line-height:1.7;}

/* FAQ */
.faq-list{display:grid;gap:12px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:#d4cbf6;box-shadow:0 14px 30px rgba(38,26,90,.08);}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:16px 52px 16px 20px;font-size:15px;font-weight:700;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"";position:absolute;right:22px;top:50%;width:9px;height:9px;
  border-right:2px solid #8a7ff0;border-bottom:2px solid #8a7ff0;
  transform:translateY(-70%) rotate(45deg);transition:transform .25s ease;
}
.faq-item[open] summary::after{transform:translateY(-25%) rotate(-135deg);}
.faq-item p{padding:0 20px 18px;font-size:14px;color:var(--muted);line-height:1.78;}

/* 百科与资讯 */
.wiki-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start;}
.wiki-block h3{font-size:17px;margin-bottom:16px;}
.wiki-item{border-left:3px solid #e3ddfb;padding:0 0 0 16px;margin-bottom:18px;}
.wiki-item:last-child{margin-bottom:0;}
.wiki-item strong{display:block;font-size:14.5px;margin-bottom:5px;}
.wiki-item span{font-size:13.5px;color:var(--muted);line-height:1.72;display:block;}
.article-list li{border-bottom:1px dashed #ece8f8;}
.article-list li:last-child{border-bottom:0;}
.article-list a{
  display:flex;align-items:flex-start;gap:10px;
  padding:12px 0;font-size:14px;font-weight:600;color:var(--ink-2);
  text-decoration:none;transition:color .2s ease,transform .2s ease;
}
.article-list a::before{
  content:"";flex:none;width:7px;height:7px;border-radius:50%;margin-top:8px;
  background:linear-gradient(135deg,#6d5cf0,#12b7c9);
}
.article-list a:hover{color:#4a37c4;transform:translateX(3px);}

/* 加盟 CTA */
.join-banner{
  border-radius:24px;padding:40px;
  background:linear-gradient(120deg,#4b3fd6,#8b35b0 52%,#e0457f);
  color:#fff;box-shadow:0 24px 50px rgba(72,38,140,.26);
  display:grid;grid-template-columns:1.4fr .6fr;gap:28px;align-items:center;
}
.join-banner h2{color:#fff;font-size:clamp(22px,2.8vw,30px);}
.join-banner p{margin-top:14px;font-size:14.5px;line-height:1.78;color:#efe9ff;max-width:46em;}
.join-actions{display:flex;flex-direction:column;gap:12px;align-items:stretch;}
.btn-light{background:#fff;color:#3f2fb8;border-color:#fff;}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(0,0,0,.18);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.62);}
.btn-outline-light:hover{transform:translateY(-2px);background:rgba(255,255,255,.14);}

/* 联系与表单 */
.contact-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:26px;align-items:start;}
.lead-form{background:#fff;border:1px solid var(--line);border-radius:20px;padding:26px;box-shadow:0 12px 30px rgba(38,26,90,.06);}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.field{display:block;margin-bottom:16px;}
.field span{display:block;font-size:13.5px;font-weight:700;color:var(--ink-2);margin-bottom:7px;}
.field input,.field select,.field textarea{
  width:100%;font-family:inherit;font-size:14px;color:var(--ink);
  padding:11px 14px;border:1px solid var(--line);border-radius:11px;background:#fbfaff;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.field textarea{resize:vertical;min-height:104px;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:#a99af0;background:#fff;box-shadow:0 0 0 3px rgba(109,92,240,.13);
}
.field select{appearance:none;-webkit-appearance:none;background-image:linear-gradient(45deg,transparent 50%,#8a7ff0 50%),linear-gradient(135deg,#8a7ff0 50%,transparent 50%);background-position:calc(100% - 19px) 50%,calc(100% - 14px) 50%;background-size:5px 5px,5px 5px;background-repeat:no-repeat;padding-right:38px;}
.form-tip{margin-top:12px;font-size:12.5px;color:var(--muted);}
.contact-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:24px;box-shadow:0 12px 30px rgba(38,26,90,.06);}
.contact-card h3{font-size:16.5px;margin-bottom:16px;}
.contact-list li{display:flex;align-items:baseline;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px dashed #ece8f8;font-size:13.5px;}
.contact-list li:last-child{border-bottom:0;}
.contact-list span{color:var(--muted);flex:none;}
.contact-list b,.contact-list a{font-weight:700;color:var(--ink);text-decoration:none;word-break:break-all;}
.contact-list a:hover{color:#4a37c4;}
.qr-frame{
  margin:18px 0 0;border:1px solid var(--line);border-radius:14px;padding:12px;
  background:#fbfaff;text-align:center;aspect-ratio:auto;
}
.qr-frame img{display:block;width:100%;max-width:190px;height:auto;margin:0 auto;border-radius:8px;}
.qr-frame figcaption{margin-top:10px;font-size:12.5px;color:var(--muted);}

/* 页脚 */
.site-footer{background:#f4f2fb;border-top:1px solid var(--line);color:#2b2f45;margin-top:8px;}
.footer-top{display:grid;grid-template-columns:1.3fr .8fr .9fr;gap:30px;padding:44px 0 30px;align-items:start;}
.footer-brand p{margin-top:14px;font-size:13.5px;line-height:1.75;color:#4d5271;max-width:34em;}
.footer-links{display:flex;flex-wrap:wrap;gap:8px 18px;align-content:flex-start;}
.footer-links a{font-size:13.5px;font-weight:600;color:#3d3566;text-decoration:none;transition:color .2s ease;}
.footer-links a:hover{color:#6d5cf0;}
.footer-contact{display:flex;flex-direction:column;gap:8px;align-items:flex-start;}
.footer-contact p{font-size:13.5px;color:#4d5271;}
.footer-contact a{color:#4a37c4;text-decoration:none;font-weight:600;}
.footer-contact a:hover{text-decoration:underline;}
.footer-links-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px 16px;
  padding:18px 0;border-top:1px solid #e2ddf0;
}
.footer-links-row span{font-size:12.5px;font-weight:800;color:#3d3566;letter-spacing:.06em;}
.footer-links-row a{font-size:12.5px;color:#5b5578;text-decoration:none;transition:color .2s ease;}
.footer-links-row a:hover{color:#6d5cf0;}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px 20px;
  padding:16px 0 24px;border-top:1px solid #e2ddf0;
}
.footer-bottom p{font-size:12.5px;color:#5b5578;}

/* 浮动工具 */
.float-tools{position:fixed;right:18px;bottom:22px;z-index:90;display:flex;flex-direction:column;gap:10px;}
.float-btn{
  width:54px;height:54px;border-radius:16px;border:1px solid var(--line);
  background:#fff;color:#3f2fb8;font-size:13px;font-weight:800;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 12px 26px rgba(38,26,90,.16);transition:transform .2s ease,box-shadow .2s ease;
  font-family:inherit;position:relative;overflow:hidden;
}
.float-btn::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:linear-gradient(90deg,#6d5cf0,#f2599b);}
.float-btn:hover{transform:translateY(-3px);box-shadow:0 18px 32px rgba(38,26,90,.22);}
.float-top{opacity:0;visibility:hidden;transform:translateY(8px);}
.float-top.show{opacity:1;visibility:visible;transform:none;}
.service-panel{
  position:fixed;right:18px;bottom:88px;z-index:95;width:236px;
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;
  box-shadow:0 22px 48px rgba(38,26,90,.2);
}
.service-panel[hidden]{display:none;}
.service-title{font-size:13.5px;font-weight:800;color:var(--ink);margin-bottom:10px;}
.service-qr{display:block;width:100%;height:auto;border-radius:10px;border:1px solid var(--line);background:#fbfaff;}
.service-panel p{font-size:12.5px;color:var(--muted);margin-top:8px;}

/* 入场动画 */
@keyframes fadeUp{from{opacity:0;transform:translateY(18px);}to{opacity:1;transform:none;}}
.reveal-in{animation:fadeUp .62s cubic-bezier(.2,.7,.3,1) both;}
@media (prefers-reduced-motion:reduce){
  .reveal-in{animation:none;}
  html{scroll-behavior:auto;}
}

/* 响应式 */
@media (max-width:1100px){
  .nav-toggle{display:flex;}
  .nav-panel{
    display:none;position:absolute;left:0;right:0;top:100%;
    background:#fff;border-bottom:1px solid var(--line);
    box-shadow:0 18px 34px rgba(38,26,90,.12);
    padding:8px 20px 16px;max-height:calc(100vh - 72px);overflow-y:auto;
  }
  .nav-panel.open{display:block;}
  .nav-links{flex-direction:column;align-items:stretch;}
  .nav-links a{padding:12px 6px;font-size:15px;border-bottom:1px solid #f1eefb;border-radius:0;}
  .nav-links li:last-child a{border-bottom:0;}
  .nav-actions .btn{display:none;}
  .hero-grid{grid-template-columns:1fr;gap:34px;}
  .about-grid{grid-template-columns:1fr;gap:26px;}
  .cap-grid{grid-template-columns:repeat(2,1fr);}
  .split{grid-template-columns:1fr;}
  .compare-grid{grid-template-columns:1fr;}
  .contact-grid{grid-template-columns:1fr;}
  .join-banner{grid-template-columns:1fr;padding:32px;}
  .footer-top{grid-template-columns:1fr 1fr;gap:26px;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:900px){
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .review-grid{grid-template-columns:repeat(2,1fr);}
  .price-grid{grid-template-columns:1fr;}
  .help-grid{grid-template-columns:repeat(2,1fr);}
  .network-grid{grid-template-columns:repeat(2,1fr);}
  .timeline{grid-template-columns:1fr;gap:14px;}
  .timeline li{padding-top:0;padding-left:34px;}
  .timeline li::before{top:22px;bottom:-16px;left:9px;right:auto;width:2px;height:auto;background:linear-gradient(180deg,#d6cff5,#eee9fb);}
  .timeline li:last-child::before{display:none;}
  .tl-dot{top:2px;left:0;}
  .wiki-grid{grid-template-columns:1fr;gap:28px;}
}
@media (max-width:720px){
  .section{padding:48px 0;}
  .hero{padding:36px 0 4px;}
  .grid-2,.grid-3,.review-grid,.case-grid,.steps,.help-grid,.cap-grid{grid-template-columns:1fr;}
  .form-row{grid-template-columns:1fr;}
  .footer-top{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .hero-metrics{grid-template-columns:1fr 1fr;}
  .join-actions{flex-direction:row;flex-wrap:wrap;}
  .join-actions .btn{flex:1 1 140px;}
  .float-btn{width:50px;height:50px;border-radius:14px;font-size:12px;}
}