*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:92px}
body{
  margin:0;
  background-color:#f4fbf7;
  background-image:
    radial-gradient(900px 620px at 100% -4%,rgba(18,207,107,.16),transparent 62%),
    radial-gradient(760px 540px at -6% 0,rgba(18,207,107,.18),transparent 60%);
  background-repeat:no-repeat;
  color:#0d1f16;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:#0b3d26;font-weight:800;line-height:1.3;letter-spacing:-.01em}
p{margin:0}
.wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:80;background:rgba(255,255,255,.94);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid #dcf0e5}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:74px;position:relative}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex-shrink:0}
.ai-page-logo{display:block;width:auto;max-height:38px}
.brand-text{font-size:18px;font-weight:800;color:#0b3d26;white-space:nowrap}
.site-nav{display:flex;align-items:center;justify-content:center;flex:1}
.nav-links{display:flex;align-items:center;gap:0;list-style:none;margin:0;padding:0;flex-wrap:wrap;justify-content:center}
.nav-links a{display:block;padding:9px 10px;font-size:14px;font-weight:600;color:#3c5449;text-decoration:none;border-radius:8px;white-space:nowrap;transition:color .2s ease,background-color .2s ease}
.nav-links a:hover{color:#0a7d3f;background:rgba(18,207,107,.12)}
.nav-toggle{display:none;align-items:center;justify-content:center;padding:9px 16px;border-radius:10px;border:1px solid #cdeadd;background:#fff;color:#0b3d26;font-size:14px;font-weight:700;font-family:inherit;cursor:pointer;transition:border-color .2s ease,color .2s ease}
.nav-toggle:hover{border-color:#12c96a;color:#0a7d3f}
.nav-cta{flex-shrink:0;padding:10px 20px;font-size:14px}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:11px 24px;border-radius:999px;font-size:15px;font-weight:700;line-height:1.4;text-decoration:none;border:1px solid transparent;cursor:pointer;font-family:inherit;transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease}
.btn-primary{background:linear-gradient(135deg,#12c96a,#0a8f4a);color:#fff;box-shadow:0 10px 24px rgba(18,207,107,.32)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(18,207,107,.42)}
.btn-primary:active{transform:translateY(0) scale(.985)}
.btn-ghost{background:#fff;color:#0b3d26;border-color:#c6ebd9}
.btn-ghost:hover{color:#0a7d3f;border-color:#12c96a;transform:translateY(-2px);box-shadow:0 10px 22px rgba(11,61,38,.09)}

/* ---------- section headings ---------- */
.section{padding:72px 0}
.section--tint{background:#eef9f2;border-top:1px solid #def1e6;border-bottom:1px solid #def1e6}
.section--last{padding-bottom:56px}
.eyebrow{display:inline-block;font-size:13px;font-weight:800;letter-spacing:.08em;color:#0a7d3f;background:rgba(18,207,107,.13);border:1px solid rgba(18,207,107,.28);padding:5px 14px;border-radius:999px;margin-bottom:14px}
.section-head{max-width:780px;margin:0 0 34px}
.section-head.center{margin:0 auto 40px;text-align:center}
.section-head h2{font-size:clamp(23px,3vw,33px);margin-bottom:12px}
.section-head p{font-size:16px;color:#5d7268}

/* ---------- hero ---------- */
.hero{padding:52px 0 44px}
.hero-panel{position:relative;display:grid;grid-template-columns:1.3fr .8fr;gap:42px;align-items:center;overflow:hidden;background:linear-gradient(135deg,#ffffff 0%,#f2fdf7 58%,#e6fbef 100%);border:1px solid #d5f0e2;border-radius:26px;padding:50px 46px;box-shadow:0 24px 60px rgba(11,61,38,.09)}
.hero-panel::before{content:"";position:absolute;top:-130px;right:-90px;width:340px;height:340px;border-radius:50%;background:radial-gradient(circle,rgba(18,207,107,.30),rgba(18,207,107,0) 68%);animation:floatSlow 13s ease-in-out infinite}
.hero-panel::after{content:"";position:absolute;bottom:-100px;left:36%;width:230px;height:230px;border-radius:50%;background:radial-gradient(circle,rgba(18,207,107,.20),rgba(18,207,107,0) 70%);animation:floatSlow 17s ease-in-out infinite reverse}
@keyframes floatSlow{0%,100%{transform:translate3d(0,0,0)}50%{transform:translate3d(-14px,18px,0)}}
.hero-copy,.hero-side{position:relative;z-index:1}
.hero h1{font-size:clamp(27px,3.6vw,44px);line-height:1.22;margin:16px 0 16px;color:#0b3d26;letter-spacing:-.02em}
.hero-lead{font-size:16px;color:#46605a;line-height:1.85;max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.hero-tags span{font-size:13px;font-weight:700;color:#0a7d3f;background:#fff;border:1px solid #d5f0e2;border-radius:999px;padding:6px 14px}
.stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.stat{background:rgba(255,255,255,.9);border:1px solid #d8f1e3;border-radius:16px;padding:18px 14px;text-align:center;transition:transform .25s ease,box-shadow .25s ease}
.stat:hover{transform:translateY(-4px);box-shadow:0 14px 28px rgba(11,61,38,.12)}
.stat strong{display:block;font-size:25px;font-weight:800;color:#0a9c4f;line-height:1.2}
.stat span{display:block;font-size:13px;color:#5d7268;margin-top:6px;line-height:1.5}

/* ---------- generic cards ---------- */
.card{background:#fff;border:1px solid #dcf0e5;border-radius:18px;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.card:hover{transform:translateY(-5px);box-shadow:0 18px 38px rgba(11,61,38,.12);border-color:#a9e8c6}

/* ---------- about ---------- */
.about-lead{font-size:16px;color:#41584e;line-height:1.9;max-width:900px;margin-bottom:32px}
.cap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.cap-card{position:relative;overflow:hidden;padding:24px 22px}
.cap-card::after{content:"";position:absolute;left:0;top:0;height:3px;width:0;background:linear-gradient(90deg,#16d873,#0a8f4a);transition:width .32s ease}
.cap-card:hover::after{width:100%}
.cap-card h3{font-size:17px;margin-bottom:8px}
.cap-card p{font-size:14px;color:#5d7268;line-height:1.75}

/* ---------- services ---------- */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.svc-card{position:relative;overflow:hidden;padding:26px 24px}
.svc-card::after{content:"";position:absolute;left:0;top:0;height:3px;width:0;background:linear-gradient(90deg,#16d873,#0a8f4a);transition:width .32s ease}
.svc-card:hover::after{width:100%}
.svc-icon{width:42px;height:42px;border-radius:12px;background:rgba(18,207,107,.13);color:#0a8f4a;display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.svc-icon svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.svc-card h3{font-size:17px;margin-bottom:8px}
.svc-card p{font-size:14px;color:#5d7268;line-height:1.75}

/* ---------- cloud tags ---------- */
.cloud{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:6px}
.cloud span{display:inline-block;padding:8px 16px;border-radius:999px;background:#fff;border:1px solid #d9efe4;color:#274a3a;font-size:14px;font-weight:600;transition:transform .22s ease,background-color .22s ease,color .22s ease,border-color .22s ease,box-shadow .22s ease}
.cloud span:hover{background:#12c96a;color:#fff;border-color:#12c96a;transform:translateY(-3px);box-shadow:0 10px 20px rgba(18,207,107,.28)}

/* ---------- steps ---------- */
.steps{list-style:none;margin:6px 0 0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.step{padding:24px 20px}
.step-no{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:11px;background:rgba(18,207,107,.14);color:#0a7d3f;font-size:14px;font-weight:800;margin-bottom:14px}
.step h3{font-size:16px;margin-bottom:8px}
.step p{font-size:14px;color:#5d7268;line-height:1.75}

/* ---------- solutions ---------- */
.sol-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.sol-card{padding:22px;border-left:4px solid #12c96a}
.sol-card h3{font-size:16px;margin-bottom:8px}
.sol-card p{font-size:14px;color:#5d7268;line-height:1.75}
.network-band{margin-top:26px;display:grid;grid-template-columns:repeat(4,1fr);gap:14px;background:#fff;border:1px solid #dcf0e5;border-radius:18px;padding:20px 22px}
.network-item strong{display:block;font-size:15px;color:#0b3d26;margin-bottom:4px}
.network-item span{display:block;font-size:13px;color:#5d7268}

/* ---------- cases ---------- */
.case-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.case-card{overflow:hidden;padding:0}
.case-media{aspect-ratio:16/11;overflow:hidden;background:#eaf7ef;border-radius:17px 17px 0 0}
.case-media img{display:block;width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.case-card:hover .case-media img{transform:scale(1.05)}
.case-body{padding:16px 18px 20px}
.case-body h3{font-size:16px;margin-bottom:6px}
.case-body p{font-size:13px;color:#5d7268;line-height:1.7}

/* ---------- review ---------- */
.score-banner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;background:linear-gradient(135deg,#0b3d26,#0f6b3f);color:#eafff3;border-radius:20px;padding:24px 30px;margin-bottom:24px;box-shadow:0 18px 40px rgba(11,61,38,.20)}
.score-left{display:flex;align-items:center;gap:16px}
.score-label{font-size:14px;font-weight:700;color:#bfe9d2}
.score-stars{font-size:20px;letter-spacing:3px;color:#ffd85e}
.score-right{display:flex;align-items:baseline;gap:6px}
.score-right strong{font-size:34px;line-height:1;color:#7cf2ad;font-weight:800}
.score-right span{font-size:15px;color:#bfe9d2}
.table-scroll{overflow-x:auto;background:#fff;border:1px solid #dcf0e5;border-radius:16px;-webkit-overflow-scrolling:touch}
.compare-table{width:100%;border-collapse:collapse;min-width:700px;font-size:15px}
.compare-table caption{text-align:left;padding:16px 18px 0;font-size:15px;font-weight:700;color:#0b3d26}
.compare-table th,.compare-table td{padding:14px 18px;text-align:left;vertical-align:top;border-bottom:1px solid #eaf6ef;color:#33493d}
.compare-table thead th{background:#0b3d26;color:#fff;font-weight:700;font-size:14px;border-bottom:none}
.compare-table tbody th{font-weight:700;color:#0b3d26;background:#f6fdf9;white-space:nowrap}
.compare-table td.hl{background:#f0fdf6;color:#0a7d3f;font-weight:700}
.compare-table tbody tr:last-child th,.compare-table tbody tr:last-child td{border-bottom:none}

/* ---------- reviews ---------- */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.review-card{padding:24px;display:flex;flex-direction:column;gap:16px}
.review-quote{font-size:15px;color:#33493d;line-height:1.8;flex:1}
.review-user{border-top:1px solid #eaf6ef;padding-top:14px}
.review-user strong{display:block;font-size:15px;color:#0b3d26}
.review-user span{display:block;font-size:13px;color:#6b8177;margin-top:2px}

/* ---------- form ---------- */
.lead-form{max-width:900px;margin:0 auto;background:#fff;border:1px solid #dcf0e5;border-radius:20px;padding:32px;box-shadow:0 18px 44px rgba(11,61,38,.08)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:18px}
.form-grid .field{margin-bottom:0}
.field span{font-size:14px;font-weight:700;color:#274a3a}
.field input,.field select,.field textarea{width:100%;font-family:inherit;font-size:15px;color:#0d1f16;background:#fff;border:1px solid #d5ebe0;border-radius:12px;padding:12px 14px;outline:none;transition:border-color .2s ease,box-shadow .2s ease}
.field input::placeholder,.field textarea::placeholder{color:#93a9a0}
.field input:focus,.field select:focus,.field textarea:focus{border-color:#12c96a;box-shadow:0 0 0 4px rgba(18,207,107,.14)}
.field textarea{resize:vertical;min-height:118px;line-height:1.7}
.form-submit{margin-top:22px;width:100%;max-width:260px}
.form-note{margin-top:14px;font-size:13px;color:#6b8177}

/* ---------- help ---------- */
.help-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-bottom:26px}
.help-card{padding:22px 20px}
.help-card h3{font-size:15px;margin-bottom:8px}
.help-card p{font-size:13px;color:#5d7268;line-height:1.7}
.tag-block{background:#fff;border:1px solid #dcf0e5;border-radius:18px;padding:22px 24px}
.tag-block h3{font-size:16px;margin-bottom:14px}
.tag-list{display:flex;flex-wrap:wrap;gap:9px}
.tag-list span{font-size:13px;font-weight:600;color:#2d5445;background:#f2fbf6;border:1px solid #dcf0e5;border-radius:999px;padding:6px 14px;transition:background-color .2s ease,color .2s ease,border-color .2s ease}
.tag-list span:hover{background:#12c96a;color:#fff;border-color:#12c96a}

/* ---------- news ---------- */
.news-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:14px}
.news-list li{background:#fff;border:1px solid #dcf0e5;border-radius:14px;padding:16px 20px;display:flex;align-items:center;justify-content:space-between;gap:16px;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease}
.news-list li:hover{transform:translateY(-3px);box-shadow:0 14px 28px rgba(11,61,38,.10);border-color:#a9e8c6}
.news-list a{font-size:15px;font-weight:700;color:#0b3d26;text-decoration:none;line-height:1.6}
.news-list a:hover{color:#0a7d3f}
.news-list .news-tag{font-size:12px;font-weight:700;color:#0a7d3f;background:rgba(18,207,107,.13);border-radius:999px;padding:4px 10px;white-space:nowrap}

/* ---------- faq ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px;margin:0 auto}
.faq-item{background:#fff;border:1px solid #dcf0e5;border-radius:14px;overflow:hidden;transition:box-shadow .25s ease,border-color .25s ease}
.faq-item[open]{border-color:#9fe3c0;box-shadow:0 12px 28px rgba(11,61,38,.09)}
.faq-item summary{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;padding:18px 22px;cursor:pointer;font-size:16px;font-weight:700;color:#10362a;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"";flex-shrink:0;width:10px;height:10px;margin-top:7px;border-right:2px solid #0a9c4f;border-bottom:2px solid #0a9c4f;transform:rotate(45deg);transition:transform .25s ease}
.faq-item[open] summary::after{transform:rotate(-135deg)}
.faq-answer{padding:0 22px 20px;font-size:15px;color:#4a6157;line-height:1.8}

/* ---------- contact ---------- */
.contact-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:start}
.contact-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:14px}
.contact-item{background:#fff;border:1px solid #dcf0e5;border-radius:14px;padding:16px 18px}
.contact-item strong{display:block;font-size:13px;color:#6b8177;font-weight:700;margin-bottom:4px}
.contact-item span,.contact-item a{display:block;font-size:15px;color:#0b3d26;font-weight:700;text-decoration:none;word-break:break-all}
.contact-item a:hover{color:#0a7d3f}
.qr-card{background:#fff;border:1px solid #dcf0e5;border-radius:18px;padding:24px;text-align:center}
.qr-card h3{font-size:16px;margin-bottom:14px}
.qr-card img{display:block;width:100%;max-width:200px;height:auto;margin:0 auto 14px;border-radius:12px;background:#f4fbf7}
.qr-card p{font-size:13px;color:#5d7268}
.join-card{margin-top:22px;background:linear-gradient(135deg,#0b3d26,#0f6b3f);border-radius:18px;padding:26px 26px;color:#dcf7e8;box-shadow:0 18px 40px rgba(11,61,38,.18)}
.join-card h3{color:#fff;font-size:18px;margin-bottom:10px}
.join-card p{font-size:14px;color:#c3e9d5;line-height:1.8;margin-bottom:16px}
.join-card .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.join-card .btn-ghost:hover{background:#fff;color:#0b3d26;border-color:#fff}

/* ---------- footer ---------- */
.site-footer{background:#082b1a;color:#cfe9db;padding:52px 0 0;border-top:4px solid #12c96a}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:32px;padding-bottom:36px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .ai-page-logo{max-height:34px}
.footer-brand strong{font-size:18px;color:#ffffff;font-weight:800}
.footer-desc{font-size:14px;line-height:1.85;color:#a9cdba;margin-bottom:18px}
.footer-col h4{font-size:15px;color:#ffffff;margin-bottom:14px;font-weight:800}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:#a9cdba;text-decoration:none;transition:color .2s ease}
.footer-links a:hover{color:#7cf2ad}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:14px;color:#a9cdba}
.footer-contact a{color:#a9cdba;text-decoration:none}
.footer-contact a:hover{color:#7cf2ad}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:18px 0 22px;font-size:13px;color:#8fb9a4;display:flex;flex-wrap:wrap;gap:10px 20px;align-items:center;justify-content:space-between}
.footer-bottom a{color:#8fb9a4;text-decoration:none}
.footer-bottom a:hover{color:#7cf2ad}

/* ---------- float tools ---------- */
.float-tools{position:fixed;right:18px;bottom:22px;z-index:90;display:flex;flex-direction:column;gap:10px;align-items:flex-end}
.float-btn{display:inline-flex;align-items:center;justify-content:center;min-width:86px;height:44px;padding:0 16px;border-radius:999px;border:1px solid #cfeade;background:#fff;color:#0b3d26;font-size:14px;font-weight:700;font-family:inherit;cursor:pointer;box-shadow:0 10px 24px rgba(11,61,38,.14);transition:transform .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease}
.float-btn:hover{background:#12c96a;color:#fff;border-color:#12c96a;transform:translateY(-2px)}
#toTop{display:none}
#toTop.show{display:inline-flex}
.kefu-panel{position:fixed;right:18px;bottom:132px;z-index:91;width:252px;background:#fff;border:1px solid #d8efe4;border-radius:16px;padding:18px;box-shadow:0 22px 50px rgba(11,61,38,.18);text-align:center}
.kefu-panel[hidden]{display:none}
.kefu-panel h4{font-size:15px;margin-bottom:12px;color:#0b3d26}
.kefu-panel img{display:block;width:100%;max-width:180px;height:auto;margin:0 auto 12px;border-radius:10px;background:#f4fbf7}
.kefu-panel p{font-size:13px;color:#4a6157;margin-bottom:6px}

/* ---------- reveal ---------- */
html.js .reveal{opacity:0;transform:translateY(26px);transition:opacity .65s cubic-bezier(.22,.7,.3,1),transform .65s cubic-bezier(.22,.7,.3,1)}
html.js .reveal.in{opacity:1;transform:translateY(0)}

/* ---------- responsive ---------- */
@media (max-width:1100px){
  .nav-toggle{display:inline-flex}
  .site-nav{display:none;position:absolute;left:0;right:0;top:100%;background:#fff;border-bottom:1px solid #dcf0e5;box-shadow:0 18px 32px rgba(11,61,38,.10);padding:12px 24px 20px}
  .site-nav.open{display:block}
  .nav-links{flex-direction:column;align-items:stretch;gap:0;justify-content:flex-start}
  .nav-links a{padding:12px 10px;border-radius:10px}
}
@media (max-width:1024px){
  .cap-grid,.svc-grid,.sol-grid,.review-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .case-grid{grid-template-columns:repeat(2,1fr)}
  .help-grid{grid-template-columns:repeat(2,1fr)}
  .network-band{grid-template-columns:repeat(2,1fr);gap:18px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:880px){
  .hero-panel{grid-template-columns:1fr;padding:38px 26px;gap:30px}
  .contact-grid{grid-template-columns:1fr}
  .contact-list{grid-template-columns:1fr 1fr}
  .news-list{grid-template-columns:1fr}
  .section{padding:58px 0}
}
@media (max-width:640px){
  .wrap{padding:0 18px}
  .section{padding:50px 0}
  .brand-text{font-size:16px}
  .nav-cta{padding:9px 14px;font-size:13px}
  .hero{padding:34px 0 20px}
  .hero-panel{padding:30px 20px;border-radius:20px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .stat-grid{grid-template-columns:1fr 1fr;gap:10px}
  .cap-grid,.svc-grid,.sol-grid,.review-grid,.steps,.case-grid,.help-grid{grid-template-columns:1fr}
  .network-band{grid-template-columns:1fr;padding:18px}
  .form-grid{grid-template-columns:1fr}
  .lead-form{padding:22px}
  .contact-list{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .score-banner{padding:20px}
  .score-right strong{font-size:28px}
  .float-btn{min-width:76px;height:42px;font-size:13px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  html.js .reveal{opacity:1;transform:none;transition:none}
  .hero-panel::before,.hero-panel::after{animation:none}
}