:root{
  --ink:#101b33;
  --ink-2:#33415c;
  --muted:#66748f;
  --line:#e3ebf8;
  --brand:#2b5cff;
  --brand-dark:#1c3fd6;
  --violet:#7a3cff;
  --accent:#ff7a3d;
  --teal:#0fc4ae;
  --card:#ffffff;
  --sh-1:0 4px 16px rgba(23,51,120,.06);
  --sh-2:0 14px 36px rgba(23,51,120,.12);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.7;
  color:var(--ink);
  background-color:#f5f9ff;
  background-image:
    radial-gradient(1100px 640px at 0% -10%, rgba(43,92,255,.16), transparent 62%),
    radial-gradient(920px 580px at 100% 2%, rgba(255,122,61,.14), transparent 60%),
    radial-gradient(1000px 720px at 50% 106%, rgba(15,196,174,.14), transparent 64%);
  background-attachment:fixed;
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand-dark)}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}
.section{padding:76px 0;position:relative}
.section-alt{background:rgba(255,255,255,.6)}
.eyebrow{
  display:inline-block;padding:5px 14px;border-radius:999px;font-size:13px;font-weight:600;
  letter-spacing:.4px;color:var(--brand-dark);background:rgba(43,92,255,.1);border:1px solid rgba(43,92,255,.18);
}
.section-head{max-width:780px;margin:0 auto 44px;text-align:center}
.section-head h2{margin:14px 0 12px;font-size:clamp(24px,3vw,34px);line-height:1.3;letter-spacing:-.4px;color:var(--ink)}
.section-head p{margin:0;color:var(--muted);font-size:16px}
h1,h2,h3{word-break:break-word}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(43,92,255,.12);
}
.header-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:70px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto}
.ai-page-logo{width:120px;max-width:100%;height:auto}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  padding:9px 16px;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--ink);font-size:14px;font-weight:600;cursor:pointer;
  font-family:inherit;
}
.nav-panel{display:flex;align-items:center;gap:16px;min-width:0}
.nav-links{list-style:none;display:flex;align-items:center;gap:0;margin:0;padding:0}
.nav-links a{
  display:block;padding:8px 11px;font-size:14px;color:var(--ink-2);text-decoration:none;
  border-radius:9px;white-space:nowrap;transition:color .2s ease,background .2s ease;
}
.nav-links a:hover{color:var(--brand-dark);background:rgba(43,92,255,.08)}
.nav-cta{flex:0 0 auto;white-space:nowrap}

/* 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:600;
  text-decoration:none;border:1px solid transparent;cursor:pointer;font-family:inherit;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease;
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:linear-gradient(135deg,#2b5cff,#6a3cff);color:#fff;box-shadow:0 10px 24px rgba(43,92,255,.28)}
.btn-primary:hover{box-shadow:0 14px 30px rgba(43,92,255,.38)}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line);box-shadow:var(--sh-1)}
.btn-accent{background:linear-gradient(135deg,#ff7a3d,#ff5a8a);color:#fff;box-shadow:0 10px 24px rgba(255,122,61,.3)}
.btn-lg{padding:15px 30px;font-size:16px;border-radius:14px}

/* 首屏 */
.hero{padding:66px 0 78px;overflow:hidden;position:relative}
.hero::before{
  content:"";position:absolute;top:-150px;right:-110px;width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle,rgba(43,92,255,.2),rgba(43,92,255,0) 70%);
  animation:pulseGlow 10s ease-in-out infinite;pointer-events:none;
}
.hero::after{
  content:"";position:absolute;bottom:-160px;left:-120px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,122,61,.18),rgba(255,122,61,0) 70%);
  animation:pulseGlow 12s ease-in-out infinite reverse;pointer-events:none;
}
@keyframes pulseGlow{0%,100%{transform:scale(1);opacity:.85}50%{transform:scale(1.16);opacity:1}}
.hero-grid{position:relative;display:grid;grid-template-columns:1.12fr .88fr;gap:52px;align-items:center}
.hero h1{margin:18px 0 18px;font-size:clamp(30px,3.6vw,46px);line-height:1.24;letter-spacing:-.8px;font-weight:800;color:var(--ink)}
.hero-lead{margin:0 0 26px;font-size:17px;color:var(--ink-2);max-width:620px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.hero-points{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:10px 24px;font-size:14px;color:var(--muted)}
.hero-points li{position:relative;padding-left:20px}
.hero-points li::before{
  content:"";position:absolute;left:0;top:50%;width:8px;height:8px;margin-top:-4px;border-radius:50%;
  background:linear-gradient(135deg,#2b5cff,#0fc4ae);
}
.hero-panel{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.stat-card{
  position:relative;overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:16px;
  padding:20px 18px;box-shadow:var(--sh-1);
  transition:transform .25s ease,box-shadow .25s ease;
  animation:riseIn .7s ease both;
}
.stat-card::before{
  content:"";position:absolute;top:0;left:0;width:100%;height:3px;
  background:linear-gradient(90deg,#2b5cff,#7a3cff,#ff7a3d);
}
.stat-card:nth-child(2){animation-delay:.1s}
.stat-card:nth-child(3){animation-delay:.2s}
.stat-card:nth-child(4){animation-delay:.3s}
.stat-card strong{display:block;font-size:26px;line-height:1.2;font-weight:800;color:var(--ink)}
.stat-card span{display:block;margin-top:6px;font-size:13px;color:var(--muted);line-height:1.5}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
@keyframes riseIn{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}

/* 关于我们 */
.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:26px}
.stat-item{
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px 20px;
  box-shadow:var(--sh-1);transition:transform .25s ease,box-shadow .25s ease;
}
.stat-item:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.stat-item strong{display:block;font-size:28px;font-weight:800;color:var(--brand-dark);line-height:1.2}
.stat-item span{display:block;margin-top:6px;font-size:14px;color:var(--muted)}
.about-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px}
.about-card{
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px 22px;
  box-shadow:var(--sh-1);transition:transform .25s ease,box-shadow .25s ease;
}
.about-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.about-card h3{margin:0 0 8px;font-size:17px;color:var(--ink)}
.about-card p{margin:0;font-size:14px;color:var(--muted);line-height:1.68}

/* 服务场景 */
.scene-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:18px}
.scene-card{
  display:flex;flex-direction:column;gap:8px;
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px 20px;
  box-shadow:var(--sh-1);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.scene-card::before{
  content:"";display:block;width:28px;height:4px;border-radius:2px;
  background:linear-gradient(90deg,#2b5cff,#0fc4ae);margin-bottom:6px;
}
.scene-card h3{margin:0;font-size:17px;color:var(--ink)}
.scene-card p{margin:0;font-size:14px;color:var(--muted);line-height:1.65}
.scene-card:hover{transform:translateY(-5px);box-shadow:var(--sh-2);border-color:rgba(43,92,255,.28)}

/* 流程 */
.flow{list-style:none;margin:0 0 46px;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:16px;counter-reset:flow}
.flow-step{
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px 20px;
  box-shadow:var(--sh-1);transition:transform .25s ease,box-shadow .25s ease;
}
.flow-step::before{
  counter-increment:flow;content:counter(flow);
  display:inline-flex;align-items:center;justify-content:center;
  width:30px;height:30px;border-radius:9px;margin-bottom:12px;
  background:linear-gradient(135deg,#2b5cff,#7a3cff);color:#fff;font-weight:700;font-size:14px;
}
.flow-step h3{margin:0 0 6px;font-size:16px;color:var(--ink)}
.flow-step p{margin:0;font-size:14px;color:var(--muted);line-height:1.62}
.flow-step:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.model-cloud{background:#fff;border:1px solid var(--line);border-radius:20px;padding:30px 26px;box-shadow:var(--sh-1)}
.model-cloud h3{margin:0 0 16px;font-size:18px;color:var(--ink)}
.tag-cloud{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:10px}
.tag-cloud li{
  padding:7px 16px;border-radius:999px;background:#f6f9ff;border:1px solid var(--line);
  font-size:14px;color:var(--ink-2);transition:background .2s ease,color .2s ease,transform .2s ease;
}
.tag-cloud li:hover{background:linear-gradient(135deg,#2b5cff,#6a3cff);color:#fff;border-color:transparent;transform:translateY(-2px)}

/* 行业方案 */
.solution-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px}
.solution-card{
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px 22px;
  box-shadow:var(--sh-1);transition:transform .25s ease,box-shadow .25s ease;
}
.solution-card h3{margin:0 0 8px;font-size:17px;color:var(--ink)}
.solution-card p{margin:0;font-size:14px;color:var(--muted);line-height:1.68}
.solution-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.network-band{
  margin-top:26px;display:grid;grid-template-columns:1fr auto;gap:28px;align-items:center;
  background:linear-gradient(120deg,#132a6e,#254fbe 55%,#2b5cff);
  border-radius:22px;padding:34px 32px;color:#fff;box-shadow:0 18px 40px rgba(24,56,150,.24);
}
.network-band h3{margin:0 0 8px;font-size:20px;color:#fff}
.network-band p{margin:0;font-size:15px;color:rgba(255,255,255,.86);max-width:640px}
.network-list{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:10px}
.network-list li{
  padding:8px 16px;border-radius:999px;background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.24);font-size:14px;color:#fff;white-space:nowrap;
}

/* 案例 */
.case-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px;margin-bottom:22px}
.case-card{
  margin:0;background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;
  box-shadow:var(--sh-1);transition:transform .25s ease,box-shadow .25s ease;
}
.case-card:hover{transform:translateY(-5px);box-shadow:var(--sh-2)}
.case-media{background:#f3f7ff;aspect-ratio:4/3;display:flex;align-items:center;justify-content:center;padding:10px}
.case-media img{width:100%;height:100%;object-fit:contain;border-radius:10px}
.case-card figcaption{padding:18px 20px 22px}
.case-card h3{margin:0 0 6px;font-size:17px;color:var(--ink)}
.case-card p{margin:0;font-size:14px;color:var(--muted);line-height:1.65}
.gallery{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px}
.gallery-item{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:var(--sh-1);aspect-ratio:16/10;display:flex;align-items:center;justify-content:center;padding:8px;transition:transform .25s ease,box-shadow .25s ease}
.gallery-item:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.gallery-item img{width:100%;height:100%;object-fit:contain;border-radius:9px}

/* 对比评测 */
.compare-top{display:grid;grid-template-columns:.95fr 1.05fr;gap:24px;margin-bottom:30px;align-items:stretch}
.score-card{
  background:#fff;border:1px solid var(--line);border-radius:20px;padding:30px 26px;
  box-shadow:var(--sh-2);display:flex;flex-direction:column;gap:10px;
}
.score-line{display:flex;align-items:baseline;gap:8px}
.score-num{font-size:58px;font-weight:800;line-height:1;color:var(--brand-dark);letter-spacing:-2px}
.score-max{font-size:18px;color:var(--muted);font-weight:600}
.stars{color:#ffb020;font-size:22px;letter-spacing:4px;line-height:1}
.score-label{margin:0;font-size:15px;font-weight:700;color:var(--ink)}
.score-desc{margin:0 0 8px;font-size:14px;color:var(--muted);line-height:1.7}
.score-card .btn{align-self:flex-start}
.compare-highlights{
  background:#fff;border:1px solid var(--line);border-radius:20px;padding:26px;
  box-shadow:var(--sh-1);
}
.compare-highlights h3{margin:0 0 14px;font-size:17px;color:var(--ink)}
.highlight-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:10px 18px}
.highlight-list li{position:relative;padding-left:20px;font-size:14px;color:var(--ink-2);line-height:1.6}
.highlight-list li::before{
  content:"";position:absolute;left:0;top:9px;width:9px;height:9px;border-radius:3px;
  background:linear-gradient(135deg,#2b5cff,#0fc4ae);
}
.table-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--sh-1)}
table{width:100%;border-collapse:collapse;min-width:760px;font-size:14.5px}
thead th{
  background:linear-gradient(180deg,#eef4ff,#e6eeff);color:var(--ink);
  text-align:left;padding:16px 18px;font-weight:700;white-space:nowrap;
}
tbody td{padding:15px 18px;border-top:1px solid var(--line);color:var(--ink-2);vertical-align:top}
tbody tr:hover{background:#f7faff}
tbody th{
  padding:15px 18px;border-top:1px solid var(--line);text-align:left;
  font-weight:600;color:var(--ink);background:#fbfdff;white-space:nowrap;
}

/* 用户评价 */
.review-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:18px}
.review-card{
  display:flex;flex-direction:column;gap:16px;
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;
  box-shadow:var(--sh-1);transition:transform .25s ease,box-shadow .25s ease;
}
.review-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.review-card blockquote{margin:0;font-size:15px;color:var(--ink-2);line-height:1.78}
.review-meta{display:flex;align-items:center;gap:12px;margin-top:auto}
.avatar{
  flex:0 0 auto;width:42px;height:42px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#2b5cff,#7a3cff);color:#fff;font-weight:700;font-size:15px;
}
.review-meta strong{display:block;font-size:15px;color:var(--ink);line-height:1.3}
.review-meta span{display:block;font-size:13px;color:var(--muted)}

/* FAQ */
.faq-list{display:grid;gap:12px;max-width:900px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--sh-1);overflow:hidden}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 54px 18px 20px;
  font-size:16px;font-weight:600;color:var(--ink);position:relative;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--brand);line-height:1;transition:transform .25s ease;
}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.faq-item[open] summary{color:var(--brand-dark)}
.faq-body{padding:0 20px 18px;font-size:15px;color:var(--muted);line-height:1.75}
.faq-body p{margin:0}

/* 资讯 */
.article-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px}
.article-card{
  display:flex;flex-direction:column;gap:8px;text-decoration:none;
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;
  box-shadow:var(--sh-1);transition:transform .25s ease,box-shadow .25s ease;
}
.article-card h3{margin:0;font-size:16px;color:var(--ink)}
.article-card p{margin:0;font-size:14px;color:var(--muted);line-height:1.65}
.article-card span{margin-top:auto;padding-top:8px;font-size:14px;font-weight:600;color:var(--brand-dark)}
.article-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}

/* 加盟代理 */
.agent-inner{
  display:grid;grid-template-columns:1fr auto;gap:28px;align-items:center;
  background:linear-gradient(120deg,#fff3ec,#ffeaf2 45%,#eef2ff);
  border:1px solid #ffe0cd;border-radius:22px;padding:36px 34px;box-shadow:var(--sh-1);
}
.agent-inner h2{margin:12px 0 10px;font-size:clamp(22px,2.6vw,30px);color:var(--ink);line-height:1.32}
.agent-inner p{margin:0;font-size:15px;color:var(--ink-2);max-width:680px}

/* 联系我们 */
.contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:24px;align-items:start}
.contact-form{
  display:grid;gap:16px;background:#fff;border:1px solid var(--line);border-radius:20px;
  padding:28px;box-shadow:var(--sh-2);
}
.form-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-row{display:grid;gap:7px}
.form-row label{font-size:14px;font-weight:600;color:var(--ink)}
.form-row input,.form-row select,.form-row textarea{
  width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:10px;
  font-size:15px;font-family:inherit;color:var(--ink);background:#fbfdff;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.form-row textarea{min-height:120px;resize:vertical}
.form-row input::placeholder,.form-row textarea::placeholder{color:#9aa8c0}
.form-row input:focus,.form-row select:focus,.form-row textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(43,92,255,.14);
}
.form-note{margin:0;font-size:13px;color:var(--muted)}
.contact-form .btn{justify-self:start;min-width:160px}
.contact-info{display:grid;gap:16px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:28px;box-shadow:var(--sh-1)}
.contact-info h3{margin:0;font-size:17px;color:var(--ink)}
.info-list{list-style:none;margin:0;padding:0;display:grid;gap:12px;font-size:14.5px;color:var(--ink-2)}
.info-list li{display:flex;gap:10px;align-items:flex-start}
.info-list strong{flex:0 0 76px;font-weight:600;color:var(--muted);font-size:14px}
.info-list a{color:var(--brand-dark);text-decoration:none;word-break:break-all}
.info-list a:hover{text-decoration:underline}
.qr-box{display:flex;align-items:center;gap:16px;padding-top:16px;border-top:1px solid var(--line)}
.qr-box img{width:130px;max-width:100%;height:auto;border-radius:10px;border:1px solid var(--line)}
.qr-box p{margin:0;font-size:14px;color:var(--muted)}

/* 页脚 */
.site-footer{background:#0d1730;color:#c9d4ec;padding:46px 0 0;margin-top:0}
.footer-top{display:grid;grid-template-columns:1fr 1.2fr;gap:38px;padding-bottom:28px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer-name{display:block;font-size:20px;font-weight:800;color:#fff;margin-bottom:10px;letter-spacing:.5px}
.footer-brand p{margin:0 0 14px;font-size:14px;color:#a8bfe4;line-height:1.72;max-width:420px}
.footer-meta{list-style:none;margin:0;padding:0;display:grid;gap:6px;font-size:14px;color:#a8bfe4}
.footer-meta a{color:#9fc2ff;text-decoration:none}
.footer-meta a:hover{color:#fff;text-decoration:underline}
.footer-links h3{margin:0 0 14px;font-size:16px;color:#fff;font-weight:700}
.friend-links{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:10px 18px}
.friend-links a{color:#a8bfe4;font-size:14px;text-decoration:none;transition:color .2s ease}
.friend-links a:hover{color:#fff}
.footer-bottom{padding:18px 0;font-size:13px;color:#8ea6cc;text-align:center}

/* 浮动客服 */
.float-dock{position:fixed;right:18px;bottom:22px;z-index:90;display:flex;flex-direction:column;gap:10px}
.float-dock button{
  width:54px;height:54px;border-radius:16px;border:none;cursor:pointer;font-family:inherit;
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;color:#fff;
  background:linear-gradient(135deg,#2b5cff,#7a3cff);
  box-shadow:0 10px 26px rgba(43,92,255,.35);
  transition:transform .2s ease,box-shadow .2s ease;
}
.float-dock button:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(43,92,255,.45)}
.float-dock .to-top{background:linear-gradient(135deg,#ff7a3d,#ff5a8a);box-shadow:0 10px 26px rgba(255,122,61,.35)}
.service-panel{
  position:absolute;right:66px;bottom:0;width:220px;background:#fff;border:1px solid var(--line);
  border-radius:16px;box-shadow:var(--sh-2);padding:16px;text-align:center;
}
.service-panel img{width:150px;max-width:100%;height:auto;margin:0 auto 8px;border-radius:10px}
.service-panel p{margin:0 0 6px;font-size:13px;color:var(--muted)}
.service-panel a{font-size:13px;color:var(--brand-dark);text-decoration:none;word-break:break-all}

/* 滚动渐入 */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
.reveal.is-visible{opacity:1;transform:none}

/* 响应式 */
@media (max-width:1120px){
  .nav-toggle{display:inline-flex}
  .nav-panel{
    display:none;position:absolute;left:-20px;right:-20px;top:100%;
    background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--sh-2);
    padding:12px 20px 18px;flex-direction:column;align-items:stretch;gap:12px;
  }
  .nav-panel.is-open{display:flex}
  .nav-links{flex-direction:column;align-items:stretch;gap:0}
  .nav-links a{padding:12px 8px;font-size:15px;border-bottom:1px solid #eef3fb;border-radius:0}
  .nav-cta{width:100%}
}
@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .compare-top{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .agent-inner{grid-template-columns:1fr;padding:28px 24px}
  .network-band{grid-template-columns:1fr;padding:28px 24px}
  .footer-top{grid-template-columns:1fr;gap:26px}
  .highlight-list{grid-template-columns:1fr}
  .section{padding:56px 0}
  .section-head{margin-bottom:32px}
}
@media (max-width:640px){
  .form-2{grid-template-columns:1fr}
  .hero{padding:44px 0 56px}
  .hero-panel{grid-template-columns:1fr 1fr;gap:10px}
  .stat-card{padding:16px 14px}
  .stat-card strong{font-size:22px}
  .score-num{font-size:48px}
  .contact-form,.contact-info,.model-cloud{padding:22px}
  .qr-box{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .stat-card,.hero::before,.hero::after{animation:none}
  .btn:hover,.stat-card:hover,.scene-card:hover,.case-card:hover,.review-card:hover,.about-card:hover,.solution-card:hover,.flow-step:hover,.article-card:hover,.gallery-item:hover{transform:none}
}