*{margin:0;padding:0;box-sizing:border-box}
:root{
--blue:#1a4fd6;
--blue-deep:#0b2f8f;
--blue-bright:#2f6bff;
--blue-soft:#eaf1ff;
--ink:#14213d;
--ink-soft:#4a5875;
--line:#d9e3f7;
--bg:#f4f7ff;
--white:#ffffff;
}
html{scroll-behavior:smooth}
body{
font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",Roboto,sans-serif;
background:var(--bg);
color:var(--ink);
line-height:1.65;
-webkit-font-smoothing:antialiased;
overflow-x:hidden;
}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
h1,h2,h3,h4{color:var(--ink);line-height:1.3;font-weight:700}

/* ===== Header ===== */
.site-header{
position:sticky;top:0;z-index:100;
background:rgba(255,255,255,.94);
backdrop-filter:blur(12px);
border-bottom:1px solid var(--line);
}
.nav-wrap{
display:flex;align-items:center;justify-content:space-between;
min-height:68px;gap:16px;flex-wrap:wrap;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.ai-page-logo{height:36px;width:auto;max-width:100%}
.brand-name{font-size:18px;font-weight:800;color:var(--blue-deep);letter-spacing:.5px}
.nav-links{display:flex;align-items:center;gap:0;flex-wrap:wrap;list-style:none}
.nav-links li a{
display:block;padding:8px 12px;font-size:15px;color:var(--ink-soft);
border-radius:8px;transition:color .2s,background .2s;
}
.nav-links li a:hover{color:var(--blue);background:var(--blue-soft)}
.nav-cta{
display:inline-flex;align-items:center;gap:6px;
background:linear-gradient(135deg,var(--blue),var(--blue-bright));
color:#fff;font-weight:700;font-size:15px;
padding:9px 20px;border-radius:999px;
border:none;cursor:pointer;
box-shadow:0 6px 18px rgba(26,79,214,.28);
transition:transform .2s,box-shadow .2s;
white-space:nowrap;
}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(26,79,214,.4)}
.menu-toggle{
display:none;background:none;border:1px solid var(--line);color:var(--blue-deep);
width:42px;height:42px;border-radius:10px;cursor:pointer;font-size:20px;line-height:1;
}

/* ===== Hero ===== */
.hero{
position:relative;overflow:hidden;
background:
radial-gradient(circle at 15% 20%,rgba(47,107,255,.18),transparent 45%),
radial-gradient(circle at 85% 15%,rgba(26,79,214,.22),transparent 50%),
linear-gradient(160deg,#f4f7ff 0%,#e6eeff 60%,#dbe6ff 100%);
padding:70px 0 80px;
border-bottom:1px solid var(--line);
}
.hero-grid{
position:absolute;inset:0;pointer-events:none;
background-image:linear-gradient(rgba(26,79,214,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(26,79,214,.06) 1px,transparent 1px);
background-size:46px 46px;
mask-image:radial-gradient(ellipse at 50% 40%,#000 40%,transparent 78%);
-webkit-mask-image:radial-gradient(ellipse at 50% 40%,#000 40%,transparent 78%);
}
.hero-orb{
position:absolute;border-radius:50%;filter:blur(60px);opacity:.55;pointer-events:none;
animation:floatOrb 9s ease-in-out infinite;
}
.orb-1{width:280px;height:280px;background:#7aa2ff;top:-60px;left:-60px}
.orb-2{width:220px;height:220px;background:#4d7cff;bottom:-70px;right:8%;animation-delay:2s}
@keyframes floatOrb{0%,100%{transform:translateY(0)}50%{transform:translateY(-24px)}}
.hero-inner{position:relative;z-index:2;max-width:860px}
.hero-badge{
display:inline-flex;align-items:center;gap:8px;
background:rgba(255,255,255,.85);border:1px solid var(--line);
color:var(--blue);font-size:13px;font-weight:600;
padding:6px 14px;border-radius:999px;margin-bottom:22px;
box-shadow:0 4px 14px rgba(26,79,214,.08);
}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--blue-bright);animation:pulseDot 1.8s infinite}
@keyframes pulseDot{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(1.4)}}
.hero h1{
font-size:clamp(28px,4.4vw,46px);
font-weight:800;letter-spacing:-.5px;
color:var(--ink);margin-bottom:20px;
}
.hero h1 .hl{color:var(--blue);position:relative;display:inline-block}
.hero-sub{
font-size:clamp(15px,1.6vw,18px);color:var(--ink-soft);
max-width:640px;margin-bottom:30px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:38px}
.btn-primary{
display:inline-flex;align-items:center;gap:8px;
background:linear-gradient(135deg,var(--blue),var(--blue-bright));
color:#fff;font-weight:700;font-size:16px;
padding:14px 30px;border-radius:12px;border:none;cursor:pointer;
box-shadow:0 10px 26px rgba(26,79,214,.34);
transition:transform .2s,box-shadow .2s;
}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 34px rgba(26,79,214,.46)}
.btn-ghost{
display:inline-flex;align-items:center;gap:8px;
background:#fff;color:var(--blue-deep);font-weight:700;font-size:16px;
padding:14px 26px;border-radius:12px;border:1px solid var(--line);cursor:pointer;
transition:transform .2s,border-color .2s,box-shadow .2s;
}
.btn-ghost:hover{transform:translateY(-3px);border-color:var(--blue);box-shadow:0 10px 24px rgba(26,79,214,.14)}
.hero-metrics{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px;max-width:760px}
.hero-metric{
background:rgba(255,255,255,.8);border:1px solid var(--line);
border-radius:14px;padding:16px 18px;
box-shadow:0 6px 20px rgba(26,79,214,.07);
transition:transform .2s,box-shadow .2s;
}
.hero-metric:hover{transform:translateY(-4px);box-shadow:0 12px 26px rgba(26,79,214,.16)}
.hero-metric b{display:block;font-size:24px;color:var(--blue);font-weight:800;line-height:1.2}
.hero-metric span{font-size:13px;color:var(--ink-soft)}

/* ===== Section base ===== */
.section{padding:64px 0}
.section.alt{background:linear-gradient(180deg,#f4f7ff 0%,#eef3ff 100%)}
.section-head{max-width:720px;margin-bottom:38px}
.eyebrow{
display:inline-block;font-size:13px;font-weight:700;letter-spacing:1.5px;
color:var(--blue);background:var(--blue-soft);
padding:5px 12px;border-radius:6px;margin-bottom:14px;text-transform:uppercase;
}
.section-head h2{font-size:clamp(23px,2.8vw,32px);margin-bottom:12px}
.section-head p{color:var(--ink-soft);font-size:15.5px}

/* ===== About / platform intro ===== */
.intro-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:32px;align-items:start}
.intro-text p{color:var(--ink-soft);margin-bottom:14px;font-size:15.5px}
.intro-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.tag{
font-size:13px;color:var(--blue-deep);background:#eaf1ff;
border:1px solid var(--line);padding:5px 12px;border-radius:999px;
transition:background .2s,color .2s,transform .2s;
}
.tag:hover{background:var(--blue);color:#fff;transform:translateY(-2px)}
.intro-panel{
background:linear-gradient(150deg,#1a4fd6,#2f6bff);
color:#fff;border-radius:18px;padding:30px 26px;
box-shadow:0 18px 40px rgba(26,79,214,.3);
}
.intro-panel h3{color:#fff;font-size:20px;margin-bottom:18px}
.intro-list{list-style:none;display:grid;gap:13px}
.intro-list li{display:flex;gap:10px;font-size:14.5px;color:rgba(255,255,255,.94);line-height:1.55}
.intro-list li::before{
content:"";flex-shrink:0;width:18px;height:18px;margin-top:2px;
background:rgba(255,255,255,.22);border-radius:50%;
background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23fff' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
background-size:12px;background-position:center;background-repeat:no-repeat;
}

/* ===== Service cards ===== */
.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px}
.service-card{
background:#fff;border:1px solid var(--line);border-radius:16px;
padding:24px 22px;transition:transform .25s,box-shadow .25s,border-color .25s;
position:relative;overflow:hidden;
}
.service-card::after{
content:"";position:absolute;left:0;top:0;height:3px;width:0;
background:linear-gradient(90deg,var(--blue),var(--blue-bright));
transition:width .3s;
}
.service-card:hover{transform:translateY(-6px);box-shadow:0 18px 36px rgba(26,79,214,.14);border-color:#c2d3f7}
.service-card:hover::after{width:100%}
.service-ico{
width:44px;height:44px;border-radius:12px;
display:flex;align-items:center;justify-content:center;
background:var(--blue-soft);color:var(--blue);margin-bottom:16px;
}
.service-ico svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.service-card h3{font-size:17px;margin-bottom:8px}
.service-card p{font-size:14px;color:var(--ink-soft)}

/* ===== Steps ===== */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:20px;counter-reset:step}
.step{
background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px 22px;
position:relative;transition:transform .25s,box-shadow .25s;
}
.step:hover{transform:translateY(-5px);box-shadow:0 14px 30px rgba(26,79,214,.12)}
.step-num{
width:38px;height:38px;border-radius:10px;
display:flex;align-items:center;justify-content:center;
font-weight:800;font-size:16px;color:#fff;
background:linear-gradient(135deg,var(--blue),var(--blue-bright));
margin-bottom:14px;
box-shadow:0 6px 16px rgba(26,79,214,.28);
}
.step h3{font-size:16px;margin-bottom:8px}
.step p{font-size:13.5px;color:var(--ink-soft)}

/* ===== Industry / scenarios ===== */
.scene-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px}
.scene{
background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;
display:flex;gap:14px;align-items:flex-start;
transition:transform .22s,box-shadow .22s,background .22s;
}
.scene:hover{transform:translateY(-4px);box-shadow:0 12px 26px rgba(26,79,214,.12);background:#fbfdff}
.scene-badge{
flex-shrink:0;width:40px;height:40px;border-radius:11px;
background:linear-gradient(135deg,#eaf1ff,#d6e4ff);color:var(--blue);
display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;
}
.scene h4{font-size:15px;margin-bottom:5px}
.scene p{font-size:13px;color:var(--ink-soft)}

/* ===== Network ===== */
.network-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px}
.net-card{
background:linear-gradient(160deg,#fff,#f2f7ff);
border:1px solid var(--line);border-radius:14px;padding:22px;text-align:center;
transition:transform .22s,box-shadow .22s;
}
.net-card:hover{transform:translateY(-5px);box-shadow:0 14px 30px rgba(26,79,214,.13)}
.net-card strong{display:block;font-size:16px;color:var(--blue-deep);margin-bottom:6px}
.net-card span{font-size:13px;color:var(--ink-soft)}

/* ===== Compare table ===== */
.table-wrap{overflow-x:auto;border-radius:16px;border:1px solid var(--line);background:#fff;box-shadow:0 10px 30px rgba(26,79,214,.08)}
table{width:100%;border-collapse:collapse;min-width:680px;font-size:14.5px}
thead th{
background:linear-gradient(135deg,var(--blue),var(--blue-bright));
color:#fff;padding:15px 18px;text-align:left;font-weight:700;white-space:nowrap;
}
tbody td{padding:14px 18px;border-bottom:1px solid #eef2fb;color:var(--ink-soft);vertical-align:top}
tbody tr:last-child td{border-bottom:none}
tbody tr:hover{background:#f6f9ff}
td.strong-cell{color:var(--ink);font-weight:600}
.stars{color:#f5a623;letter-spacing:2px;font-size:15px}
.score-badge{
display:inline-block;background:var(--blue-soft);color:var(--blue-deep);
font-weight:800;padding:3px 10px;border-radius:8px;font-size:13px;
}

/* ===== Reviews ===== */
.review-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}
.review{
background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px;
display:flex;flex-direction:column;gap:14px;
transition:transform .25s,box-shadow .25s;
}
.review:hover{transform:translateY(-5px);box-shadow:0 16px 34px rgba(26,79,214,.13)}
.review-stars{color:#f5a623;font-size:14px;letter-spacing:2px}
.review p{font-size:14px;color:var(--ink-soft);line-height:1.7}
.review-who{display:flex;align-items:center;gap:12px;margin-top:auto;padding-top:12px;border-top:1px dashed var(--line)}
.avatar{
width:40px;height:40px;border-radius:50%;flex-shrink:0;
background:linear-gradient(135deg,var(--blue),var(--blue-bright));color:#fff;
display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;
}
.who-name{font-size:14px;font-weight:700;color:var(--ink)}
.who-role{font-size:12.5px;color:var(--ink-soft)}

/* ===== Case ===== */
.case-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}
.case-card{
background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;
transition:transform .25s,box-shadow .25s;
}
.case-card:hover{transform:translateY(-6px);box-shadow:0 18px 38px rgba(26,79,214,.15)}
.case-media{background:#eef3ff;aspect-ratio:16/10;overflow:hidden}
.case-media img{width:100%;height:100%;object-fit:cover}
.case-body{padding:20px 22px}
.case-body span{font-size:12.5px;color:var(--blue);font-weight:700;letter-spacing:.6px}
.case-body h3{font-size:16px;margin:8px 0}
.case-body p{font-size:13.5px;color:var(--ink-soft)}

/* ===== Article ===== */
.article-list{display:grid;gap:14px}
.article-item{
background:#fff;border:1px solid var(--line);border-radius:14px;
padding:18px 22px;display:flex;align-items:center;justify-content:space-between;
gap:18px;transition:transform .22s,box-shadow .22s,border-color .22s;
}
.article-item:hover{transform:translateX(6px);box-shadow:0 10px 26px rgba(26,79,214,.11);border-color:#c2d3f7}
.article-item .a-title{font-size:15.5px;font-weight:600;color:var(--ink)}
.article-item .a-link{flex-shrink:0;font-size:13.5px;color:var(--blue);font-weight:700;white-space:nowrap}

/* ===== Pricing / Token ===== */
.token-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:20px}
.token-card{
background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px;
transition:transform .25s,box-shadow .25s,border-color .25s;
}
.token-card:hover{transform:translateY(-6px);box-shadow:0 18px 36px rgba(26,79,214,.14);border-color:#c2d3f7}
.token-card h3{font-size:16px;margin-bottom:6px}
.token-price{font-size:28px;font-weight:800;color:var(--blue);margin:8px 0 4px}
.token-price small{font-size:13px;font-weight:500;color:var(--ink-soft)}
.token-card p{font-size:13.5px;color:var(--ink-soft);margin-top:10px}
.token-card .tag{margin-top:14px;display:inline-block}

/* ===== 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;overflow:hidden;transition:box-shadow .2s,border-color .2s}
.faq-item.open{box-shadow:0 12px 30px rgba(26,79,214,.12);border-color:#c2d3f7}
.faq-q{
width:100%;text-align:left;background:none;border:none;cursor:pointer;
padding:18px 54px 18px 22px;font-size:15.5px;font-weight:600;color:var(--ink);
position:relative;line-height:1.5;font-family:inherit;
}
.faq-q::after{
content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
font-size:22px;font-weight:400;color:var(--blue);transition:transform .25s;
}
.faq-item.open .faq-q::after{content:"−"}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a p{padding:0 22px 20px;font-size:14px;color:var(--ink-soft);line-height:1.75}

/* ===== Form ===== */
.form-wrap{
display:grid;grid-template-columns:.9fr 1.1fr;gap:34px;align-items:start;
}
.form-side h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:14px}
.form-side p{color:var(--ink-soft);font-size:15px;margin-bottom:20px}
.contact-list{list-style:none;display:grid;gap:12px}
.contact-list li{display:flex;gap:10px;font-size:14px;color:var(--ink-soft);align-items:flex-start}
.contact-list li b{color:var(--ink);font-weight:600}
.form-card{
background:#fff;border:1px solid var(--line);border-radius:18px;padding:30px;
box-shadow:0 14px 34px rgba(26,79,214,.09);
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:13.5px;font-weight:600;color:var(--ink);margin-bottom:6px}
.form-group label .req{color:#e5484d}
.form-group input,.form-group select,.form-group textarea{
width:100%;padding:11px 14px;border:1px solid var(--line);border-radius:10px;
font-size:14px;color:var(--ink);background:#fbfdff;font-family:inherit;
transition:border-color .2s,box-shadow .2s,background .2s;
}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{
outline:none;border-color:var(--blue);background:#fff;
box-shadow:0 0 0 3px rgba(47,107,255,.14);
}
.form-group textarea{resize:vertical;min-height:110px}
.form-submit{
width:100%;padding:14px;border:none;border-radius:12px;cursor:pointer;
background:linear-gradient(135deg,var(--blue),var(--blue-bright));
color:#fff;font-size:16px;font-weight:700;font-family:inherit;
box-shadow:0 10px 24px rgba(26,79,214,.3);
transition:transform .2s,box-shadow .2s;
}
.form-submit:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(26,79,214,.42)}
.form-note{font-size:12.5px;color:var(--ink-soft);margin-top:12px;text-align:center}

/* ===== Footer ===== */
.site-footer{
background:#0b1a3d;color:#c3d0ea;padding:52px 0 0;margin-top:20px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding-bottom:36px}
.footer-brand img{height:34px;margin-bottom:14px;filter:brightness(0) invert(1)}
.footer-brand p{font-size:13.5px;line-height:1.75;color:#a4b5d6;max-width:280px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:14px}
.footer-col ul{list-style:none;display:grid;gap:9px}
.footer-col ul li a{font-size:13.5px;color:#a4b5d6;transition:color .2s}
.footer-col ul li a:hover{color:#fff}
.footer-bottom{
border-top:1px solid rgba(255,255,255,.12);padding:18px 0;
display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap;
font-size:13px;color:#8ba0c7;
}
.footer-bottom a{color:#a4b5d6}
.footer-bottom a:hover{color:#fff}
.friend-links{display:flex;flex-wrap:wrap;gap:8px 16px;font-size:13px}
.friend-links a{color:#a4b5d6}
.friend-links a:hover{color:#fff}

/* ===== Floating ===== */
.float-tools{position:fixed;right:18px;bottom:24px;z-index:200;display:flex;flex-direction:column;gap:10px}
.float-btn{
width:48px;height:48px;border-radius:50%;border:none;cursor:pointer;
background:linear-gradient(135deg,var(--blue),var(--blue-bright));color:#fff;
display:flex;align-items:center;justify-content:center;
box-shadow:0 8px 22px rgba(26,79,214,.4);
transition:transform .2s,box-shadow .2s;font-size:18px;
}
.float-btn:hover{transform:translateY(-3px) scale(1.05);box-shadow:0 12px 28px rgba(26,79,214,.55)}
.float-btn svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.back-top{opacity:0;pointer-events:none;transition:opacity .3s,transform .2s}
.back-top.show{opacity:1;pointer-events:auto}

/* ===== Reveal ===== */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:translateY(0)}
@media (prefers-reduced-motion:reduce){
.reveal{opacity:1;transform:none;transition:none}
.hero-orb{animation:none}
}

/* ===== Responsive ===== */
@media (max-width:900px){
.intro-grid{grid-template-columns:1fr}
.form-wrap{grid-template-columns:1fr}
.footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
.nav-links{
display:none;width:100%;flex-direction:column;align-items:stretch;
gap:0;padding:8px 0 4px;border-top:1px solid var(--line);margin-top:10px;
}
.nav-links.open{display:flex}
.nav-links li a{padding:12px 10px;font-size:15px;border-radius:8px}
.menu-toggle{display:flex;align-items:center;justify-content:center}
.nav-cta{display:none}
.nav-wrap{align-items:center}
.hero{padding:52px 0 60px}
.section{padding:48px 0}
.form-row{grid-template-columns:1fr}
.footer-bottom{flex-direction:column;align-items:flex-start}
.article-item{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:520px){
.footer-grid{grid-template-columns:1fr;gap:26px}
.hero-actions .btn-primary,.hero-actions .btn-ghost{width:100%;justify-content:center}
}