:root{
  --blue:#1b45e8;
  --blue-2:#3a72ff;
  --blue-deep:#0a1f66;
  --ink:#0b1638;
  --muted:#4a5a80;
  --line:#dbe5fa;
  --bg:#eef3fd;
  --accent:#ffd233;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",Roboto,sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.72;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%}
a{color:var(--blue)}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,p{margin:0}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}
section{scroll-margin-top:88px}

/* 头部导航 */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  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);
  flex-shrink:0;
}
.brand .ai-page-logo{max-height:38px;width:auto;display:block}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:16px;font-weight:800;letter-spacing:.02em}
.brand-text em{font-style:normal;font-size:11px;color:#6478a6;letter-spacing:.02em}
.site-nav{display:flex}
.nav-links{
  display:flex;
  align-items:center;
  justify-content:flex-end;
  gap:0;
  flex-wrap:nowrap;
}
.nav-links a{
  display:block;
  padding:10px 12px;
  font-size:15px;
  color:#1a2a55;
  text-decoration:none;
  border-radius:8px;
  white-space:nowrap;
  transition:color .2s ease,background .2s ease;
}
.nav-links a:hover{color:var(--blue);background:#eef3ff}
.header-cta{flex-shrink:0;padding:10px 20px;font-size:14px}
.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:42px;
  height:42px;
  padding:0 9px;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  cursor:pointer;
}
.nav-toggle span{display:block;height:2px;background:var(--ink);border-radius:2px;transition:transform .25s ease,opacity .25s ease}
.nav-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active 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 .18s ease,box-shadow .22s ease,background .22s ease,color .22s ease;
}
.btn:active{transform:translateY(1px) scale(.99)}
.btn-primary{background:linear-gradient(135deg,#1b45e8,#3772ff);color:#fff;box-shadow:0 10px 22px rgba(27,69,232,.26)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(27,69,232,.34)}
.btn-accent{background:linear-gradient(135deg,#ffd94a,#ffb300);color:#3a2600;box-shadow:0 10px 24px rgba(255,178,0,.34)}
.btn-accent:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(255,178,0,.44)}
.btn-outline{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.55);color:#fff}
.btn-outline:hover{background:rgba(255,255,255,.18)}
.btn-light{background:#fff;color:#12359e;border-color:#cfdaf2}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(20,50,140,.14)}

/* Hero */
.hero{
  position:relative;
  overflow:hidden;
  padding:68px 0 56px;
  color:#fff;
  background:
    radial-gradient(760px 420px at 84% 8%,rgba(96,152,255,.55),transparent 62%),
    radial-gradient(520px 380px at 8% 92%,rgba(0,208,255,.24),transparent 65%),
    linear-gradient(135deg,#08195c 0%,#123cc4 54%,#2f6bff 100%);
}
.hero::after{
  content:"";
  position:absolute;
  width:520px;
  height:520px;
  right:-120px;
  top:-180px;
  border-radius:50%;
  border:1px solid rgba(255,255,255,.22);
  box-shadow:0 0 0 60px rgba(255,255,255,.05),0 0 0 130px rgba(255,255,255,.03);
  pointer-events:none;
  animation:slowSpin 26s linear infinite;
}
@keyframes slowSpin{from{transform:rotate(0)}to{transform:rotate(360deg)}}
.hero-grid{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1.08fr .92fr;
  gap:44px;
  align-items:center;
}
.hero-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:999px;
  background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.28);
  font-size:13px;
  letter-spacing:.04em;
  color:#e6efff;
  margin-bottom:18px;
}
.pulse-dot{
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 0 0 rgba(255,210,51,.7);
  animation:pulse 2.4s infinite;
}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(255,210,51,.6)}
  70%{box-shadow:0 0 0 10px rgba(255,210,51,0)}
  100%{box-shadow:0 0 0 0 rgba(255,210,51,0)}
}
.hero h1{
  font-size:clamp(28px,4.3vw,46px);
  line-height:1.24;
  font-weight:800;
  letter-spacing:-.01em;
  margin-bottom:16px;
}
.hero-lead{
  font-size:16px;
  color:#d5e2ff;
  max-width:580px;
  margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:24px}
.hero-points{
  display:flex;
  flex-wrap:wrap;
  gap:10px 22px;
}
.hero-points li{
  position:relative;
  padding-left:16px;
  font-size:14px;
  color:#c9dbff;
}
.hero-points li::before{
  content:"";
  position:absolute;
  left:0;
  top:9px;
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--accent);
}
.matrix{
  position:relative;
  border-radius:22px;
  padding:26px 24px;
  background:rgba(255,255,255,.13);
  border:1px solid rgba(255,255,255,.3);
  backdrop-filter:blur(8px);
  box-shadow:0 26px 60px rgba(4,16,60,.36);
}
.matrix-title{
  font-size:14px;
  letter-spacing:.08em;
  color:#e8f0ff;
  margin-bottom:16px;
}
.matrix-chips{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:18px}
.matrix-chips span{
  padding:6px 13px;
  border-radius:999px;
  background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.26);
  font-size:13px;
  color:#fff;
  transition:background .22s ease,transform .22s ease;
}
.matrix-chips span:hover{background:rgba(255,255,255,.3);transform:translateY(-2px)}
.matrix-note{
  font-size:13px;
  color:#c2d4ff;
  border-top:1px solid rgba(255,255,255,.2);
  padding-top:14px;
}
.hero-stats{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:16px;
  margin-top:52px;
}
.stat{
  border-radius:16px;
  padding:18px 20px;
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.22);
}
.stat strong{display:block;font-size:26px;font-weight:800;color:#fff;line-height:1.2}
.stat span{display:block;font-size:13px;color:#bccfff;margin-top:4px}

/* 通用区块 */
.section{padding:76px 0;position:relative}
.section-alt{background:#fff}
.section-tint{background:linear-gradient(180deg,#e9f0ff,#f6f9ff)}
.section-head{max-width:800px;margin-bottom:38px}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  letter-spacing:.06em;
  color:#1b45e8;
  background:#e6edff;
  border:1px solid #cfdcff;
  padding:5px 13px;
  border-radius:999px;
  margin-bottom:14px;
}
.eyebrow-light{color:#ffe9a8;background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.3)}
.sec-title{
  font-size:clamp(23px,3vw,33px);
  line-height:1.32;
  font-weight:800;
  letter-spacing:-.01em;
  margin-bottom:12px;
}
.sec-sub{color:var(--muted);font-size:15.5px}

/* 卡片 */
.card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:16px;
  padding:22px;
  box-shadow:0 6px 18px rgba(16,40,110,.05);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:0 18px 38px rgba(20,50,140,.13);border-color:#b9cbff}
.grid{display:grid;gap:18px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}

/* 关于我们 */
.about-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:start}
.about-copy p + p{margin-top:14px;color:var(--muted)}
.about-copy .sec-sub{margin-bottom:16px}
.about-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.about-list{display:grid;gap:14px}
.about-list li{
  background:#fff;
  border:1px solid var(--line);
  border-left:3px solid var(--blue);
  border-radius:12px;
  padding:16px 18px;
  transition:transform .22s ease,box-shadow .22s ease;
}
.about-list li:hover{transform:translateX(4px);box-shadow:0 12px 26px rgba(20,50,140,.1)}
.about-list h3{font-size:16px;font-weight:700;margin-bottom:4px}
.about-list p{font-size:14px;color:var(--muted)}

/* 服务卡 */
.service-card h3{font-size:17px;font-weight:700;margin-bottom:8px;color:#0f2560}
.service-card p{font-size:14.5px;color:var(--muted)}
.cloud{margin-top:34px}
.cloud h3{font-size:16px;font-weight:700;margin-bottom:14px;color:#12265e}
.tags{display:flex;flex-wrap:wrap;gap:10px}
.tags span{
  display:inline-block;
  padding:7px 15px;
  border-radius:999px;
  font-size:13.5px;
  color:#1c3a8c;
  background:#fff;
  border:1px solid #cfdcff;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.tags span:hover{background:#eaf0ff;transform:translateY(-2px)}
.tags-model span{background:#eaf1ff;border-color:#cddcff;color:#193b96}

/* 流程步骤 */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.flow-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:16px;
  padding:22px 20px;
  transition:transform .25s ease,box-shadow .25s ease;
}
.flow-item:hover{transform:translateY(-4px);box-shadow:0 16px 34px rgba(20,50,140,.12)}
.flow-num{
  display:flex;
  align-items:center;
  justify-content:center;
  width:36px;
  height:36px;
  border-radius:11px;
  background:linear-gradient(135deg,#1b45e8,#4080ff);
  color:#fff;
  font-weight:700;
  font-size:15px;
  margin-bottom:14px;
}
.flow-item h3{font-size:16px;font-weight:700;margin-bottom:6px}
.flow-item p{font-size:14px;color:var(--muted)}
.studio-note{
  margin-top:24px;
  font-size:14px;
  color:#2a3f78;
  background:#fff;
  border:1px dashed #b9cbff;
  border-radius:12px;
  padding:14px 18px;
}

/* 行业方案 */
.solution-card h3{font-size:17px;font-weight:700;margin-bottom:8px;color:#0f2560}
.solution-card p{font-size:14.5px;color:var(--muted);margin-bottom:14px}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.tag-row span{
  font-size:12.5px;
  padding:4px 11px;
  border-radius:999px;
  background:#eef3ff;
  color:#22439b;
  border:1px solid #d7e2ff;
}

/* 服务网络 */
.net-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.net-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:16px;
  padding:22px 20px;
  transition:transform .25s ease,box-shadow .25s ease;
}
.net-card:hover{transform:translateY(-4px);box-shadow:0 16px 34px rgba(20,50,140,.12)}
.net-card h3{font-size:16px;font-weight:700;margin-bottom:8px;color:#12307e}
.net-card p{font-size:14px;color:var(--muted)}

/* 时间线 */
.timeline{position:relative;padding-left:30px}
.timeline::before{
  content:"";
  position:absolute;
  left:9px;
  top:8px;
  bottom:8px;
  width:2px;
  background:linear-gradient(180deg,#1b45e8,#9dbcff);
}
.tl-item{
  position:relative;
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  padding:18px 20px;
  margin-bottom:18px;
  transition:transform .22s ease,box-shadow .22s ease;
}
.tl-item:last-child{margin-bottom:0}
.tl-item:hover{transform:translateX(4px);box-shadow:0 14px 30px rgba(20,50,140,.1)}
.tl-item::before{
  content:"";
  position:absolute;
  left:-25px;
  top:24px;
  width:12px;
  height:12px;
  border-radius:50%;
  background:var(--blue);
  box-shadow:0 0 0 4px #dbe6ff;
}
.tl-item h3{font-size:16px;font-weight:700;margin-bottom:6px;color:#12265e}
.tl-item p{font-size:14.5px;color:var(--muted)}

/* 案例 */
.case-card{padding:16px}
.media-box{
  border-radius:12px;
  overflow:hidden;
  background:#e9effc;
  margin-bottom:14px;
}
.media-box img{display:block;width:100%;height:auto}
.case-card h3{font-size:16px;font-weight:700;margin-bottom:6px;color:#0f2560}
.case-card p{font-size:14px;color:var(--muted)}
.case-wide{
  grid-column:1 / -1;
  display:grid;
  grid-template-columns:280px 1fr;
  gap:24px;
  align-items:center;
  padding:18px;
}
.case-wide .media-box{margin-bottom:0}
.case-wide h3{font-size:18px;font-weight:700;margin-bottom:8px;color:#0f2560}
.case-wide p{font-size:14.5px;color:var(--muted);margin-bottom:16px}

/* 评测 */
.review-top{display:grid;grid-template-columns:.85fr 1.15fr;gap:20px;margin-bottom:26px;align-items:stretch}
.score-card{
  border-radius:20px;
  padding:28px 26px;
  color:#fff;
  background:radial-gradient(400px 220px at 90% 0%,rgba(96,152,255,.6),transparent 65%),linear-gradient(135deg,#08195c,#1745d6 62%,#2f6bff);
  display:flex;
  flex-direction:column;
  justify-content:center;
}
.score-label{font-size:13px;letter-spacing:.08em;color:#c9dbff;margin-bottom:10px}
.stars{font-size:22px;letter-spacing:5px;color:#ffd233;line-height:1}
.score-num{font-size:46px;font-weight:800;line-height:1.1;margin:10px 0 6px}
.score-num span{font-size:16px;font-weight:500;color:#c9dbff;margin-left:6px}
.score-desc{font-size:14px;color:#d5e2ff}
.review-points h3{font-size:17px;font-weight:700;margin-bottom:14px;color:#0f2560}
.review-points li{
  position:relative;
  padding-left:20px;
  font-size:14.5px;
  color:#33436b;
  margin-bottom:10px;
}
.review-points li:last-child{margin-bottom:0}
.review-points li::before{
  content:"";
  position:absolute;
  left:0;
  top:9px;
  width:8px;
  height:8px;
  border-radius:2px;
  background:linear-gradient(135deg,#1b45e8,#5c90ff);
}
.table-wrap{
  overflow-x:auto;
  border:1px solid var(--line);
  border-radius:16px;
  background:#fff;
  box-shadow:0 8px 22px rgba(16,40,110,.06);
}
table.cmp{width:100%;border-collapse:collapse;min-width:760px;font-size:14.5px}
.cmp th,.cmp td{padding:14px 16px;text-align:left;border-bottom:1px solid #eef3fd;vertical-align:top}
.cmp thead th{background:#f2f6ff;color:#0b1638;font-weight:700;white-space:nowrap}
.cmp td:first-child{font-weight:600;color:#0b1638;white-space:nowrap}
.cmp tbody tr:last-child td{border-bottom:0}
.cmp .col-us{background:#f3f8ff;color:#153bd0;font-weight:600}
.review-foot{margin-top:16px;font-size:13.5px;color:#6b7ba3}

/* 价格 */
.price-card{display:flex;flex-direction:column}
.price-card h3{font-size:17px;font-weight:700;margin-bottom:4px;color:#0f2560}
.price-sub{font-size:13.5px;color:#2f57c0;margin-bottom:14px}
.price-card li{
  position:relative;
  padding-left:18px;
  font-size:14px;
  color:var(--muted);
  margin-bottom:8px;
}
.price-card li:last-child{margin-bottom:0}
.price-card li::before{
  content:"";
  position:absolute;
  left:0;
  top:9px;
  width:7px;
  height:7px;
  border-radius:50%;
  background:#5c90ff;
}
.token-note{
  margin-top:24px;
  font-size:14px;
  color:#2a3f78;
  background:#fff;
  border:1px solid var(--line);
  border-radius:12px;
  padding:14px 18px;
}
.token-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}

/* 需求匹配 */
.match-card{display:flex;flex-direction:column}
.match-card h3{font-size:16.5px;font-weight:700;margin-bottom:8px;color:#0f2560}
.match-card p{font-size:14px;color:var(--muted);margin-bottom:16px}
.match-link{
  margin-top:auto;
  font-size:14px;
  font-weight:600;
  color:var(--blue);
  text-decoration:none;
  display:inline-flex;
  align-items:center;
  gap:6px;
  transition:gap .2s ease,color .2s ease;
}
.match-link:hover{gap:12px;color:#0f2fb0}

/* 用户评论 */
.quote{display:flex;flex-direction:column;gap:14px}
.quote p{font-size:14.5px;color:#33436b}
.quote-meta{display:flex;align-items:center;gap:12px;margin-top:auto;padding-top:6px;border-top:1px solid #eef3fd}
.avatar{
  width:38px;
  height:38px;
  flex-shrink:0;
  border-radius:50%;
  background:linear-gradient(135deg,#1b45e8,#5c90ff);
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:15px;
  font-weight:700;
}
.quote-meta strong{display:block;font-size:14px;color:#0f2560}
.quote-meta em{display:block;font-style:normal;font-size:12.5px;color:#7a89ae}

/* 帮助中心 */
.help-card h3{font-size:17px;font-weight:700;margin-bottom:8px;color:#0f2560}
.help-card p{font-size:14.5px;color:var(--muted);margin-bottom:14px}

/* FAQ */
.faq-list{max-width:920px}
.faq-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .22s ease,box-shadow .22s ease;
}
.faq-item.open{border-color:#b9cbff;box-shadow:0 14px 30px rgba(20,50,140,.1)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:17px 20px;
  background:none;
  border:0;
  font-family:inherit;
  font-size:15.5px;
  font-weight:600;
  color:#0b1638;
  text-align:left;
  cursor:pointer;
}
.faq-icon{position:relative;width:18px;height:18px;flex-shrink:0}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--blue);
  border-radius:2px;
  transition:transform .3s ease;
}
.faq-icon::before{left:0;right:0;top:8px;height:2px}
.faq-icon::after{top:0;bottom:0;left:8px;width:2px}
.faq-item.open .faq-icon::after{transform:scaleY(0)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a p{padding:0 20px 18px;font-size:14.5px;color:var(--muted)}

/* AI百科 */
.wiki-card h3{font-size:16.5px;font-weight:700;margin-bottom:8px;color:#0f2560}
.wiki-card p{font-size:14.5px;color:var(--muted)}

/* 文章 */
.articles-dynamic{
  font-size:13px;
  color:#8494bb;
  letter-spacing:.02em;
  margin-bottom:16px;
}
.article-list{display:grid;gap:12px}
.article-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.article-item:hover{transform:translateX(4px);box-shadow:0 14px 30px rgba(20,50,140,.1);border-color:#b9cbff}
.article-item a{display:block;padding:18px 20px;text-decoration:none;color:inherit}
.article-item h3{font-size:16px;font-weight:700;color:#0f2560;margin-bottom:6px}
.article-item p{font-size:14px;color:var(--muted)}

/* 加盟代理 */
.join-band{
  color:#fff;
  background:
    radial-gradient(600px 320px at 88% 10%,rgba(96,152,255,.55),transparent 65%),
    linear-gradient(135deg,#08195c,#123cc4 58%,#2f6bff);
}
.join-inner{display:grid;grid-template-columns:1.25fr .75fr;gap:32px;align-items:center}
.join-band .sec-title{color:#fff}
.join-band p{color:#d5e2ff;font-size:15px}
.join-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}
.join-points{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:14px;
  margin-top:32px;
}
.join-points li{
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.22);
  border-radius:14px;
  padding:16px 18px;
  font-size:14px;
  color:#e6efff;
}

/* 联系我们 */
.contact-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:30px;align-items:start}
.contact-list{display:grid;gap:12px;margin-bottom:24px}
.contact-list li{
  display:flex;
  align-items:center;
  gap:12px;
  flex-wrap:wrap;
  background:#fff;
  border:1px solid var(--line);
  border-radius:12px;
  padding:13px 16px;
}
.contact-list span{
  min-width:88px;
  font-size:13.5px;
  color:#6b7ba3;
}
.contact-list strong,.contact-list a{font-size:15px;color:#0f2560;font-weight:600;text-decoration:none}
.contact-list a:hover{color:var(--blue);text-decoration:underline}
.qr-box{
  background:#fff;
  border:1px solid var(--line);
  border-radius:16px;
  padding:20px;
  text-align:center;
}
.qr-box img{display:block;width:100%;max-width:180px;height:auto;margin:0 auto 12px;border-radius:10px}
.qr-box p{font-size:13.5px;color:#6b7ba3}
.form-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:18px;
  padding:28px;
  box-shadow:0 16px 40px rgba(20,50,140,.08);
}
.form-card h3{font-size:19px;font-weight:800;margin-bottom:6px;color:#0f2560}
.form-tip{font-size:13.5px;color:#6b7ba3;margin-bottom:20px}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:16px}
.field label{font-size:13.5px;font-weight:600;color:#233258}
.field input,.field select,.field textarea{
  width:100%;
  padding:11px 13px;
  border:1px solid #cfdaf2;
  border-radius:10px;
  background:#fbfcff;
  font-family:inherit;
  font-size:15px;
  color:var(--ink);
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.field textarea{min-height:112px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;
  border-color:var(--blue);
  background:#fff;
  box-shadow:0 0 0 3px rgba(27,69,232,.14);
}
.form-submit{width:100%;margin-top:6px}

/* 页脚 */
.site-footer{
  background:linear-gradient(160deg,#081843,#0b1c55 70%,#102a7a);
  color:#b9c9f0;
  padding:52px 0 28px;
}
.footer-top{display:grid;grid-template-columns:1.3fr .7fr;gap:36px;padding-bottom:28px;border-bottom:1px solid rgba(255,255,255,.14)}
.footer-name{font-size:20px;font-weight:800;color:#fff;margin-bottom:10px}
.footer-desc{font-size:14px;color:#a9bcea;max-width:560px}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:12px;letter-spacing:.04em}
.footer-nav{display:flex;flex-wrap:wrap;gap:10px 20px}
.footer-nav a{font-size:14px;color:#c2d1f5;text-decoration:none;transition:color .2s ease}
.footer-nav a:hover{color:#fff}
.footer-friend{padding:26px 0;border-bottom:1px solid rgba(255,255,255,.14)}
.friend-links{display:flex;flex-wrap:wrap;gap:10px 18px}
.friend-links a{
  font-size:13.5px;
  color:#b9c9f0;
  text-decoration:none;
  transition:color .2s ease;
}
.friend-links a:hover{color:#fff;text-decoration:underline}
.footer-bottom{padding-top:20px;display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;align-items:center}
.footer-bottom p{font-size:13px;color:#93a7d8}

/* 浮动组件 */
.float-bar{
  position:fixed;
  right:16px;
  bottom:20px;
  z-index:90;
  display:flex;
  flex-direction:column;
  align-items:flex-end;
  gap:10px;
}
.fs-btn{
  width:52px;
  height:52px;
  border-radius:50%;
  border:0;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:13px;
  font-weight:700;
  font-family:inherit;
  color:#fff;
  background:linear-gradient(135deg,#1b45e8,#3772ff);
  box-shadow:0 12px 26px rgba(15,40,120,.3);
  transition:transform .2s ease,box-shadow .2s ease;
}
.fs-btn:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(15,40,120,.38)}
.fs-top{display:none;background:linear-gradient(135deg,#3a72ff,#6ea2ff)}
.fs-top.show{display:flex}
.fs-panel{
  display:none;
  width:228px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:16px;
  padding:18px;
  box-shadow:0 22px 46px rgba(15,40,120,.22);
}
.fs-panel.open{display:block;animation:popIn .24s ease}
@keyframes popIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.fs-panel .fs-title{font-size:14px;font-weight:700;color:#0f2560;margin-bottom:10px}
.fs-panel img{display:block;width:100%;max-width:180px;height:auto;margin:0 auto 12px;border-radius:10px}
.fs-list li{font-size:13px;color:#4a5a80;margin-bottom:6px}
.fs-list li:last-child{margin-bottom:0}

/* 动效 */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .7s cubic-bezier(.22,.61,.36,1),transform .7s cubic-bezier(.22,.61,.36,1)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .hero::after{animation:none}
  .pulse-dot{animation:none}
  html{scroll-behavior:auto}
}

/* 响应式 */
@media (max-width:1120px){
  .header-cta{display:none}
}
@media (max-width:980px){
  .nav-toggle{display:flex}
  .site-nav{
    display:none;
    position:absolute;
    left:0;
    right:0;
    top:100%;
    background:#fff;
    border-bottom:1px solid var(--line);
    box-shadow:0 18px 34px rgba(11,32,90,.14);
  }
  .site-nav.open{display:block}
  .nav-links{flex-direction:column;align-items:stretch;gap:0;padding:8px 20px 16px}
  .nav-links a{padding:12px 6px;border-bottom:1px solid #eef3fd;border-radius:0;font-size:15px}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .hero-visual{max-width:520px}
  .hero-stats{grid-template-columns:repeat(2,1fr);margin-top:38px}
  .about-grid{grid-template-columns:1fr;gap:28px}
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}
  .flow{grid-template-columns:repeat(2,1fr)}
  .net-grid{grid-template-columns:repeat(2,1fr)}
  .review-top{grid-template-columns:1fr}
  .join-inner{grid-template-columns:1fr;gap:22px}
  .join-actions{justify-content:flex-start}
  .join-points{grid-template-columns:1fr;margin-top:24px}
  .contact-grid{grid-template-columns:1fr;gap:24px}
  .footer-top{grid-template-columns:1fr;gap:24px}
}
@media (max-width:720px){
  .section{padding:52px 0}
  .hero{padding:48px 0 42px}
  .sec-title{font-size:23px}
  .grid-3,.grid-4{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr}
  .net-grid{grid-template-columns:1fr}
  .case-wide{grid-template-columns:1fr;gap:16px}
  .case-wide .media-box{margin-bottom:4px}
  .score-num{font-size:38px}
  .form-card{padding:22px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .float-bar{right:12px;bottom:14px}
  .fs-btn{width:48px;height:48px;font-size:12.5px}
}
@media (max-width:420px){
  .hero-stats{grid-template-columns:1fr}
  .brand-text em{display:none}
}