*{margin:0;padding:0;box-sizing:border-box}
:root{
  --teal:#0ea5a5;
  --teal-deep:#0b7c7c;
  --ink:#10242b;
  --ink-soft:#3d525c;
  --muted:#68808a;
  --line:#dfeeed;
  --bg:#f4fbfa;
  --card:#ffffff;
  --radius:16px;
  --shadow:0 10px 30px rgba(16,60,70,.08);
}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--ink);
  background:linear-gradient(180deg,#f0fbfa 0%,#f7fcfc 30%,#f4fbfa 100%);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
.container{max-width:1200px;margin:0 auto;padding:0 20px;width:100%}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
h1,h2,h3{line-height:1.3;color:var(--ink)}
h1{font-size:2.3rem;font-weight:800}
h2{font-size:1.75rem;font-weight:800}
h3{font-size:1.1rem;font-weight:700}
p{color:var(--ink-soft)}
section{padding:64px 0}
.eyebrow{display:inline-block;font-size:.8rem;font-weight:700;letter-spacing:.08em;color:var(--teal-deep);background:#def6f4;padding:5px 14px;border-radius:999px;margin-bottom:14px}
.section-head{max-width:760px;margin-bottom:38px}
.section-head p{margin-top:12px;color:var(--muted)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 26px;border-radius:999px;font-weight:700;font-size:.95rem;cursor:pointer;border:1px solid transparent;transition:transform .25s ease,box-shadow .25s ease,background .25s ease}
.btn-primary{background:linear-gradient(120deg,#0ea5a5,#0b7c7c);color:#fff;box-shadow:0 8px 22px rgba(14,165,165,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(14,165,165,.36)}
.btn-ghost{background:#fff;color:var(--teal-deep);border-color:#bfe9e6}
.btn-ghost:hover{background:#f0fbfa;transform:translateY(-2px)}

/* header */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.88);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav-bar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 0}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand .ai-page-logo{max-width:120px;width:120px}
.brand-text{font-weight:800;font-size:1.05rem;color:var(--teal-deep);white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:0;flex-wrap:wrap;justify-content:flex-end}
.nav-links a{font-size:.9rem;color:var(--ink-soft);font-weight:600;padding:8px 11px;border-radius:8px;transition:color .2s,background .2s}
.nav-links a:hover{color:var(--teal-deep);background:#eaf8f7}
.nav-cta{margin-left:14px}
.nav-toggle{display:none;background:none;border:1px solid var(--line);border-radius:10px;width:42px;height:42px;cursor:pointer;color:var(--ink)}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);margin:4px auto;border-radius:2px;transition:.25s}

/* hero */
.hero{position:relative;padding:72px 0 80px;overflow:hidden;background:radial-gradient(1200px 500px at 80% -10%,rgba(14,165,165,.18),transparent 60%),radial-gradient(900px 460px at 0% 110%,rgba(11,124,124,.14),transparent 55%),linear-gradient(180deg,#eefaf9 0%,#f4fbfa 70%)}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center}
.hero h1{margin:10px 0 18px}
.hero h1 em{font-style:normal;color:var(--teal-deep)}
.hero-lead{font-size:1.05rem;color:var(--ink-soft);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-points span{font-size:.85rem;font-weight:600;color:var(--teal-deep);background:#ffffff;border:1px solid #cfeceb;padding:6px 14px;border-radius:999px;box-shadow:0 4px 12px rgba(16,60,70,.05)}
.hero-panel{background:linear-gradient(160deg,#0b7c7c,#0ea5a5);border-radius:22px;padding:26px;color:#fff;box-shadow:0 24px 50px rgba(11,124,124,.28);animation:float 6s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
.hero-panel h3{color:#fff;font-size:1rem;margin-bottom:16px;font-weight:700}
.panel-row{display:flex;align-items:center;justify-content:space-between;padding:11px 0;border-bottom:1px dashed rgba(255,255,255,.28);font-size:.9rem}
.panel-row:last-child{border-bottom:none}
.panel-row b{font-size:1.1rem}
.hero-note{margin-top:16px;font-size:.82rem;color:rgba(255,255,255,.85)}

/* stats */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.stat-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s}
.stat-card:hover{transform:translateY(-4px);box-shadow:0 16px 36px rgba(16,60,70,.13)}
.stat-card b{display:block;font-size:1.7rem;color:var(--teal-deep);font-weight:800;margin-bottom:6px}
.stat-card span{font-size:.88rem;color:var(--muted)}

/* about */
.about-wrap{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.about-list{display:grid;gap:14px;margin-top:20px}
.about-item{display:flex;gap:12px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 18px;box-shadow:var(--shadow)}
.about-item .dot{width:34px;height:34px;flex-shrink:0;border-radius:10px;background:linear-gradient(135deg,#0ea5a5,#0b7c7c);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:.85rem}
.about-item h3{font-size:.98rem;margin-bottom:2px}
.about-item p{font-size:.88rem;color:var(--muted)}
.tag-cloud{display:flex;flex-wrap:wrap;gap:9px;margin-top:22px}
.tag-cloud span{font-size:.82rem;font-weight:600;color:var(--ink-soft);background:#eef7f7;border:1px solid #d8eceb;border-radius:999px;padding:5px 12px}

/* services */
.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.service-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s,border-color .25s}
.service-card:hover{transform:translateY(-5px);box-shadow:0 18px 40px rgba(16,60,70,.14);border-color:#bde8e6}
.service-card h3{margin-bottom:8px}
.service-card p{font-size:.88rem;color:var(--muted)}
.service-card .ico{width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg,#e0f7f5,#c4f0ed);color:var(--teal-deep);display:flex;align-items:center;justify-content:center;font-weight:800;margin-bottom:14px;font-size:.95rem}

/* platform models */
.models-band{background:linear-gradient(160deg,#083d47 0%,#0b6e6e 55%,#0ea5a5 100%);color:#fff;border-radius:24px;padding:44px 36px}
.models-band h2{color:#fff}
.models-band .section-head p{color:rgba(255,255,255,.82)}
.model-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px}
.model-tags span{font-size:.84rem;font-weight:600;padding:7px 14px;border-radius:999px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);color:#fff}

/* flow */
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.flow-step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);position:relative}
.flow-step b{display:inline-flex;width:32px;height:32px;align-items:center;justify-content:center;border-radius:50%;background:linear-gradient(135deg,#0ea5a5,#0b7c7c);color:#fff;font-size:.85rem;margin-bottom:12px}
.flow-step h3{font-size:1rem;margin-bottom:6px}
.flow-step p{font-size:.86rem;color:var(--muted)}

/* industry */
.industry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.industry-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s}
.industry-item:hover{transform:translateY(-4px);box-shadow:0 16px 34px rgba(16,60,70,.12)}
.industry-item h3{margin-bottom:6px}
.industry-item p{font-size:.87rem;color:var(--muted)}

/* network */
.network-wrap{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:start}
.network-list{display:grid;gap:12px;margin-top:18px}
.network-row{display:flex;justify-content:space-between;gap:12px;padding:13px 16px;background:#fff;border:1px solid var(--line);border-radius:12px;font-size:.9rem;box-shadow:var(--shadow)}
.network-row b{color:var(--teal-deep)}

/* case */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.case-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s}
.case-card:hover{transform:translateY(-5px);box-shadow:0 18px 40px rgba(16,60,70,.14)}
.case-thumb{aspect-ratio:16/10;background:#eef7f7;display:flex;align-items:center;justify-content:center;overflow:hidden}
.case-thumb img{width:100%;height:100%;object-fit:contain}
.case-body{padding:18px 20px 22px}
.case-body h3{font-size:1rem;margin-bottom:6px}
.case-body p{font-size:.86rem;color:var(--muted)}

/* compare */
.compare-table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
table.compare{width:100%;border-collapse:collapse;min-width:640px}
table.compare th,table.compare td{padding:15px 18px;text-align:left;font-size:.9rem;border-bottom:1px solid var(--line)}
table.compare thead th{background:#eaf8f7;color:var(--teal-deep);font-weight:800;font-size:.88rem}
table.compare tbody tr:last-child td{border-bottom:none}
table.compare tbody tr:hover td{background:#f7fcfc}
table.compare td:first-child{font-weight:700;color:var(--ink)}
.rate-badge{display:inline-flex;align-items:center;gap:6px;font-weight:800;color:#b8860b}
.compare-note{display:flex;flex-wrap:wrap;gap:16px;align-items:center;margin-top:18px}
.score-card{display:flex;align-items:center;gap:16px;background:linear-gradient(135deg,#fff7e0,#fffdf4);border:1px solid #f2e2b6;border-radius:14px;padding:16px 22px;box-shadow:var(--shadow)}
.score-card b{font-size:2rem;color:#b8860b;font-weight:800}
.score-card span{font-size:.86rem;color:var(--ink-soft)}

/* match form */
.form-wrap{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:start}
.form-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:28px;box-shadow:var(--shadow)}
.form-row{margin-bottom:16px}
.form-row label{display:block;font-size:.86rem;font-weight:700;margin-bottom:6px;color:var(--ink)}
.form-row input,.form-row select,.form-row textarea{width:100%;padding:11px 14px;border:1px solid #cfe3e2;border-radius:10px;font-size:.92rem;color:var(--ink);background:#fbfefe;font-family:inherit;transition:border-color .2s,box-shadow .2s}
.form-row input:focus,.form-row select:focus,.form-row textarea:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 3px rgba(14,165,165,.15)}
.form-row textarea{resize:vertical;min-height:96px}
.form-submit{width:100%;border:none}
.form-tip{font-size:.8rem;color:var(--muted);margin-top:10px}
.contact-list{display:grid;gap:12px;margin-top:18px}
.contact-row{display:flex;gap:12px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 16px;box-shadow:var(--shadow);font-size:.9rem}
.contact-row b{color:var(--teal-deep);flex-shrink:0}
.qr-box{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px;box-shadow:var(--shadow);margin-top:16px;display:flex;gap:16px;align-items:center}
.qr-box img{width:110px;height:110px;object-fit:contain;border-radius:10px;border:1px solid var(--line)}
.qr-box p{font-size:.86rem;color:var(--muted)}

/* token */
.token-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:6px}
.token-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s}
.token-card:hover{transform:translateY(-4px);box-shadow:0 16px 34px rgba(16,60,70,.12)}
.token-card h3{margin-bottom:6px}
.token-card b{color:var(--teal-deep);font-size:1.2rem}
.token-card p{font-size:.86rem;color:var(--muted);margin-top:6px}

/* reviews */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.review-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:12px;transition:transform .25s,box-shadow .25s}
.review-card:hover{transform:translateY(-4px);box-shadow:0 16px 34px rgba(16,60,70,.13)}
.review-card p{font-size:.9rem;color:var(--ink-soft)}
.review-user{display:flex;align-items:center;gap:10px;margin-top:auto}
.avatar{width:38px;height:38px;border-radius:50%;background:linear-gradient(135deg,#0ea5a5,#0b7c7c);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:.9rem}
.review-user b{font-size:.9rem;display:block}
.review-user span{font-size:.78rem;color:var(--muted)}

/* articles */
.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.article-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s}
.article-card:hover{transform:translateY(-4px);box-shadow:0 16px 34px rgba(16,60,70,.12)}
.article-card h3{font-size:.98rem;margin-bottom:8px}
.article-card p{font-size:.85rem;color:var(--muted);margin-bottom:12px}
.article-card a{font-size:.85rem;font-weight:700;color:var(--teal-deep)}

/* 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(--shadow);overflow:hidden}
.faq-q{width:100%;text-align:left;background:none;border:none;padding:18px 20px;font-size:.95rem;font-weight:700;color:var(--ink);cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:14px;font-family:inherit}
.faq-q::after{content:"+";font-size:1.2rem;color:var(--teal-deep);transition:transform .25s;font-weight:700}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;padding:0 20px}
.faq-a p{font-size:.88rem;color:var(--muted);padding-bottom:18px}

/* wiki */
.wiki-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.wiki-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px;box-shadow:var(--shadow)}
.wiki-card h3{font-size:.95rem;margin-bottom:6px}
.wiki-card p{font-size:.85rem;color:var(--muted)}

/* join */
.join-band{background:linear-gradient(150deg,#e8f9f7,#d5f2f0);border-radius:24px;padding:44px 36px;display:grid;grid-template-columns:1.2fr .8fr;gap:32px;align-items:center;border:1px solid #c6ecea}
.join-band h2{margin-bottom:12px}
.join-band p{color:var(--ink-soft)}
.join-band .btn{margin-top:20px}
.join-points{display:grid;gap:10px}
.join-points div{background:#fff;border-radius:10px;padding:12px 16px;font-size:.88rem;font-weight:600;color:var(--teal-deep);box-shadow:var(--shadow);transition:transform .25s}
.join-points div:hover{transform:translateX(4px)}

/* footer */
.site-footer{background:#083d47;color:#cfe9e8;padding:44px 0 22px}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1.2fr;gap:30px}
.site-footer h3{color:#fff;font-size:.95rem;margin-bottom:14px}
.site-footer p,.site-footer a{color:#b9dbd9;font-size:.86rem}
.site-footer a{display:inline-block;padding:3px 0;transition:color .2s}
.site-footer a:hover{color:#fff}
.footer-links{display:grid;gap:2px}
.footer-brand .ai-page-logo{max-width:120px;margin-bottom:12px}
.footer-bottom{margin-top:30px;border-top:1px solid rgba(255,255,255,.14);padding-top:18px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;font-size:.82rem;color:#9fc7c5}

/* floating */
.float-tools{position:fixed;right:18px;bottom:22px;z-index:80;display:flex;flex-direction:column;gap:10px}
.float-btn{width:48px;height:48px;border-radius:14px;border:none;background:linear-gradient(135deg,#0ea5a5,#0b7c7c);color:#fff;font-size:.78rem;font-weight:700;cursor:pointer;box-shadow:0 10px 24px rgba(11,124,124,.35);display:flex;align-items:center;justify-content:center;transition:transform .2s}
.float-btn:hover{transform:translateY(-3px)}
.float-btn.ghost{background:#fff;color:var(--teal-deep);border:1px solid #bfe9e6}
.kefu-pop{position:fixed;right:78px;bottom:22px;z-index:79;background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px;box-shadow:0 20px 44px rgba(16,60,70,.2);display:none;text-align:center;width:200px}
.kefu-pop.show{display:block;animation:fadeUp .25s ease}
.kefu-pop img{width:150px;height:150px;object-fit:contain;margin:0 auto 8px;border-radius:8px}
.kefu-pop p{font-size:.78rem;color:var(--muted)}
@keyframes fadeUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}

/* reveal */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .6s ease}
.reveal.visible{opacity:1;transform:translateY(0)}

@media (max-width:980px){
  .hero-grid,.about-wrap,.network-wrap,.form-wrap,.join-band{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .service-grid,.industry-grid,.case-grid,.review-grid,.article-grid,.wiki-grid,.token-grid{grid-template-columns:repeat(2,1fr)}
  .flow-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  h1{font-size:1.9rem}
}
@media (max-width:760px){
  .nav-toggle{display:block}
  .nav-links{position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;padding:8px 16px 16px;gap:0;display:none;box-shadow:0 16px 30px rgba(16,60,70,.1)}
  .nav-links.open{display:flex}
  .nav-links a{padding:11px 8px;border-radius:8px}
  .nav-cta{margin:8px 0 0}
  .nav-cta .btn{width:100%}
  .stats-grid{grid-template-columns:1fr}
  .service-grid,.industry-grid,.case-grid,.review-grid,.article-grid,.wiki-grid,.token-grid,.flow-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  section{padding:48px 0}
  h1{font-size:1.65rem}
  h2{font-size:1.4rem}
  .hero{padding:48px 0 56px}
  .models-band,.join-band{padding:30px 22px}
}