*,*::before,*::after{box-sizing:border-box;}
:root{
  --brand:#2f5bff;
  --brand-d:#1f3fd8;
  --violet:#7b3dff;
  --cyan:#00c8ff;
  --ink:#0f1b33;
  --muted:#5b6a8a;
  --line:#e7edf9;
  --soft:#f5f8ff;
  --shadow-sm:0 6px 18px rgba(24,52,120,.06);
  --shadow:0 14px 40px rgba(24,52,120,.10);
  --shadow-lg:0 24px 60px rgba(24,52,120,.16);
  --r:18px;
}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,"Segoe UI",sans-serif;
  color:var(--ink);
  background:#fff;
  line-height:1.7;
  font-size:16px;
  overflow-x:hidden;
}
img{max-width:100%;}
a{color:inherit;text-decoration:none;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{list-style:none;padding:0;}
button{font-family:inherit;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
section[id],div[id="contact"]{scroll-margin-top:90px;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;line-height:1.4;
  transition:transform .25s ease,box-shadow .25s ease,background .25s ease,color .25s ease,border-color .25s ease;
}
.btn:hover{transform:translateY(-2px);}
.btn:active{transform:translateY(0) scale(.985);}
.btn-primary{background:linear-gradient(135deg,#2f5bff 0%,#7b3dff 100%);color:#fff;box-shadow:0 10px 26px rgba(47,91,255,.30);}
.btn-primary:hover{box-shadow:0 16px 38px rgba(47,91,255,.42);}
.btn-ghost{background:#fff;color:var(--brand-d);border-color:#cbdcff;box-shadow:var(--shadow-sm);}
.btn-ghost:hover{border-color:#9db9ff;box-shadow:0 14px 30px rgba(47,91,255,.16);}
.btn-text{background:transparent;color:var(--brand-d);padding:12px 8px;}
.btn-text:hover{color:var(--violet);}
.btn-sm{padding:9px 20px;font-size:14px;}
.btn-lg{padding:15px 34px;font-size:16px;}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:900;
  background:rgba(255,255,255,.86);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid rgba(231,237,249,.9);
  transition:box-shadow .3s ease,background .3s ease;
}
.site-header.scrolled{box-shadow:0 8px 28px rgba(24,52,120,.09);background:rgba(255,255,255,.96);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.ai-page-logo{max-height:38px;width:auto;display:block;}
.brand-name{font-size:18px;font-weight:800;letter-spacing:.5px;background:linear-gradient(120deg,#2f5bff,#7b3dff);-webkit-background-clip:text;background-clip:text;color:transparent;white-space:nowrap;}
.nav{display:flex;align-items:center;}
.nav-links{display:flex;align-items:center;gap:0;margin:0;padding:0;}
.nav-links li{list-style:none;}
.nav-links a{
  display:inline-block;padding:8px 13px;border-radius:10px;
  font-size:15px;color:#33415e;font-weight:500;white-space:nowrap;
  transition:color .2s ease,background .2s ease;
}
.nav-links a:hover{color:var(--brand-d);background:#eef3ff;}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:42px;height:42px;padding:0 10px;border-radius:12px;
  background:#f2f6ff;border:1px solid #dde7fb;cursor:pointer;
}
.nav-toggle span{display:block;height:2px;width:100%;background:#2f5bff;border-radius:2px;transition:transform .3s ease,opacity .3s 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);}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:150px 0 90px;
  background:linear-gradient(180deg,#eef3ff 0%,#f7faff 46%,#ffffff 100%);
}
.hero-bg{position:absolute;inset:0;pointer-events:none;z-index:0;}
.hero-bg::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(to right,rgba(47,91,255,.075) 1px,transparent 1px),
                   linear-gradient(to bottom,rgba(47,91,255,.075) 1px,transparent 1px);
  background-size:58px 58px;
  -webkit-mask-image:radial-gradient(circle at 50% 26%,#000 0%,transparent 72%);
  mask-image:radial-gradient(circle at 50% 26%,#000 0%,transparent 72%);
}
.orb{position:absolute;border-radius:50%;filter:blur(64px);opacity:.5;}
.orb-1{width:420px;height:420px;left:-120px;top:-80px;background:radial-gradient(circle,#9dbcff,#dfe9ff 70%,transparent 72%);}
.orb-2{width:380px;height:380px;right:-100px;top:30px;background:radial-gradient(circle,#d3c2ff,#ece4ff 70%,transparent 72%);}
.orb-3{width:300px;height:300px;left:45%;bottom:-140px;background:radial-gradient(circle,#bdeeff,#e6f8ff 70%,transparent 72%);}
.hero-inner{position:relative;z-index:1;text-align:center;}
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 18px;border-radius:999px;font-size:13.5px;font-weight:600;letter-spacing:.4px;
  color:#2b48a8;background:rgba(255,255,255,.85);
  border:1px solid #d7e3ff;box-shadow:0 6px 20px rgba(47,91,255,.10);
}
.badge::before{content:"";width:7px;height:7px;border-radius:50%;background:linear-gradient(135deg,#2f5bff,#00c8ff);box-shadow:0 0 0 4px rgba(47,91,255,.14);}
.hero h1{
  margin:24px auto 0;max-width:980px;
  font-size:clamp(28px,4.2vw,54px);
  line-height:1.24;letter-spacing:-.5px;font-weight:900;
  background:linear-gradient(120deg,#12224a 18%,#2f5bff 52%,#7b3dff 82%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{
  margin:22px auto 0;max-width:830px;
  font-size:clamp(15px,1.4vw,17.5px);color:#4c5b7a;line-height:1.85;
}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:14px;margin-top:36px;}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:58px;}
.stat{
  padding:24px 16px;border-radius:var(--r);
  background:rgba(255,255,255,.86);
  border:1px solid rgba(215,227,255,.95);
  box-shadow:var(--shadow-sm);
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.stat:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:#b9cdff;}
.stat strong{display:block;font-size:clamp(24px,2.6vw,34px);font-weight:900;line-height:1.2;background:linear-gradient(120deg,#2f5bff,#7b3dff);-webkit-background-clip:text;background-clip:text;color:transparent;}
.stat strong em{font-style:normal;font-size:14px;font-weight:700;color:#8b9bbe;-webkit-text-fill-color:#8b9bbe;}
.stat span{display:block;margin-top:8px;font-size:13.5px;color:#63719a;}

/* ---------- generic section ---------- */
.section{padding:88px 0;}
.section.alt{background:linear-gradient(180deg,#f7faff 0%,#fbfcff 100%);}
.section.tint{background:linear-gradient(180deg,#f3f7ff 0%,#f9fbff 100%);}
.sec-head{max-width:820px;margin:0 auto 52px;text-align:center;}
.eyebrow{
  display:inline-block;padding:6px 16px;border-radius:999px;
  font-size:13px;font-weight:700;letter-spacing:1px;color:#2b48a8;
  background:#eaf1ff;border:1px solid #d8e4ff;
}
.sec-head h2{
  margin-top:16px;font-size:clamp(23px,2.7vw,34px);line-height:1.35;font-weight:800;letter-spacing:-.2px;color:#13203c;
}
.sec-desc{margin-top:14px;font-size:15.5px;color:#5b6a8a;line-height:1.85;}

/* ---------- about ---------- */
.about-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:start;}
.about-text p{color:#4c5b7a;font-size:15.5px;line-height:1.9;margin-bottom:16px;}
.about-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.chip{
  padding:9px 16px;border-radius:999px;font-size:14px;font-weight:600;color:#2b48a8;
  background:#fff;border:1px solid #d9e4ff;box-shadow:0 4px 14px rgba(47,91,255,.07);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.chip:hover{transform:translateY(-3px);border-color:#a9c2ff;box-shadow:0 12px 26px rgba(47,91,255,.16);}
.about-media{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.about-media figure{
  margin:0;border-radius:var(--r);overflow:hidden;background:#f2f6ff;
  border:1px solid var(--line);box-shadow:var(--shadow-sm);
  transition:transform .35s ease,box-shadow .35s ease;
}
.about-media figure:hover{transform:translateY(-6px);box-shadow:var(--shadow);}
.about-media figure:first-child{grid-column:span 2;}
.about-media img{display:block;width:100%;height:100%;object-fit:cover;}

/* ---------- service cards ---------- */
.card-grid{display:grid;gap:20px;}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}
.grid-2{grid-template-columns:repeat(2,1fr);}
.svc-card{
  position:relative;padding:26px 24px;border-radius:var(--r);
  background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-sm);
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
  overflow:hidden;
}
.svc-card::after{
  content:"";position:absolute;left:0;top:0;height:3px;width:0;
  background:linear-gradient(90deg,#2f5bff,#7b3dff,#00c8ff);
  transition:width .4s ease;
}
.svc-card:hover{transform:translateY(-7px);box-shadow:var(--shadow-lg);border-color:#d2e0ff;}
.svc-card:hover::after{width:100%;}
.svc-icon{
  width:46px;height:46px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:800;color:#fff;letter-spacing:0;
  background:linear-gradient(135deg,#2f5bff,#7b3dff);
  box-shadow:0 10px 22px rgba(47,91,255,.28);
}
.svc-card:nth-child(2n) .svc-icon{background:linear-gradient(135deg,#7b3dff,#00c8ff);box-shadow:0 10px 22px rgba(123,61,255,.24);}
.svc-card:nth-child(3n) .svc-icon{background:linear-gradient(135deg,#00a6ff,#2f5bff);box-shadow:0 10px 22px rgba(0,166,255,.24);}
.svc-card h3{margin-top:18px;font-size:17.5px;font-weight:750;color:#13203c;}
.svc-card p{margin-top:10px;font-size:14.5px;color:#5b6a8a;line-height:1.8;}

/* ---------- flow steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.step{
  position:relative;padding:26px 22px;border-radius:var(--r);
  background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-sm);
  transition:transform .3s ease,box-shadow .3s ease;
}
.step:hover{transform:translateY(-6px);box-shadow:var(--shadow);}
.step-no{
  font-size:13px;font-weight:800;letter-spacing:1px;color:#2f5bff;
  display:inline-flex;align-items:center;gap:8px;
}
.step-no::after{content:"";width:26px;height:2px;border-radius:2px;background:linear-gradient(90deg,#2f5bff,#00c8ff);}
.step h3{margin-top:12px;font-size:16.5px;font-weight:750;color:#13203c;}
.step p{margin-top:9px;font-size:14px;color:#5f6d8d;line-height:1.8;}

/* ---------- tag cloud ---------- */
.tagcloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px;justify-content:center;}
.tag{
  padding:8px 15px;border-radius:999px;font-size:13.5px;color:#3c4b6b;
  background:#fff;border:1px solid #e2eaf9;
  transition:all .25s ease;
}
.tag:hover{color:#fff;background:linear-gradient(135deg,#2f5bff,#7b3dff);border-color:transparent;transform:translateY(-3px);box-shadow:0 10px 22px rgba(47,91,255,.24);}

/* ---------- solutions ---------- */
.sol-card{
  padding:28px 26px;border-radius:var(--r);
  background:linear-gradient(160deg,#ffffff 0%,#f6f9ff 100%);
  border:1px solid var(--line);box-shadow:var(--shadow-sm);
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.sol-card:hover{transform:translateY(-7px);box-shadow:var(--shadow-lg);border-color:#c9d9ff;}
.sol-card h3{font-size:18px;font-weight:750;color:#13203c;display:flex;align-items:center;gap:10px;}
.sol-card h3::before{content:"";width:8px;height:8px;border-radius:2px;transform:rotate(45deg);background:linear-gradient(135deg,#2f5bff,#00c8ff);}
.sol-card p{margin-top:12px;font-size:14.5px;color:#5b6a8a;line-height:1.85;}
.sol-card ul{margin-top:14px;display:flex;flex-wrap:wrap;gap:8px;}
.sol-card ul li{font-size:12.5px;color:#3d5599;background:#eaf1ff;padding:4px 11px;border-radius:999px;}

/* ---------- network ---------- */
.net-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.net-card{
  padding:22px 24px;border-radius:var(--r);background:#fff;
  border:1px solid var(--line);box-shadow:var(--shadow-sm);
  transition:transform .3s ease,box-shadow .3s ease;
}
.net-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);}
.net-card h3{font-size:16px;font-weight:750;color:#13203c;}
.net-card p{margin-top:8px;font-size:14px;color:#5f6d8d;line-height:1.8;}
.net-note{margin-top:26px;text-align:center;font-size:13.5px;color:#7b88a6;}

/* ---------- timeline ---------- */
.timeline{position:relative;max-width:900px;margin:0 auto;padding-left:8px;}
.timeline::before{
  content:"";position:absolute;left:19px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,#2f5bff,#7b3dff,#00c8ff);
  border-radius:2px;opacity:.35;
}
.tl-item{position:relative;padding:0 0 34px 56px;}
.tl-item:last-child{padding-bottom:0;}
.tl-dot{
  position:absolute;left:6px;top:4px;width:28px;height:28px;border-radius:50%;
  background:#fff;border:2px solid #2f5bff;display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:800;color:#2f5bff;box-shadow:0 0 0 6px rgba(47,91,255,.08);
}
.tl-item h3{font-size:17px;font-weight:750;color:#13203c;}
.tl-item p{margin-top:8px;font-size:14.5px;color:#5b6a8a;line-height:1.85;}

/* ---------- cases ---------- */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.case-card{
  border-radius:var(--r);overflow:hidden;background:#fff;
  border:1px solid var(--line);box-shadow:var(--shadow-sm);
  transition:transform .35s ease,box-shadow .35s ease;
  display:flex;flex-direction:column;
}
.case-card:hover{transform:translateY(-7px);box-shadow:var(--shadow-lg);}
.case-thumb{position:relative;width:100%;aspect-ratio:16/10;overflow:hidden;background:#eef3ff;}
.case-thumb.square{aspect-ratio:1/1;}
.case-thumb img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .5s ease;}
.case-card:hover .case-thumb img{transform:scale(1.05);}
.case-body{padding:20px 22px 24px;}
.case-body h3{font-size:16.5px;font-weight:750;color:#13203c;}
.case-body p{margin-top:9px;font-size:14px;color:#5b6a8a;line-height:1.8;}
.case-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.case-tags span{font-size:12.5px;color:#2b48a8;background:#eaf1ff;padding:4px 11px;border-radius:999px;}

/* ---------- review ---------- */
.review-top{display:grid;grid-template-columns:.85fr 1.15fr;gap:24px;align-items:stretch;margin-bottom:30px;}
.score-card{
  padding:34px 30px;border-radius:22px;color:#fff;position:relative;overflow:hidden;
  background:linear-gradient(140deg,#2f5bff 0%,#6b3bff 58%,#00b6ff 100%);
  box-shadow:0 22px 54px rgba(47,91,255,.28);
}
.score-card::after{
  content:"";position:absolute;right:-60px;bottom:-70px;width:210px;height:210px;border-radius:50%;
  background:rgba(255,255,255,.14);
}
.score-card .sc-label{font-size:13.5px;letter-spacing:1px;opacity:.9;}
.score-card .sc-score{display:flex;align-items:flex-end;gap:8px;margin-top:10px;}
.score-card .sc-score b{font-size:60px;line-height:1;font-weight:900;letter-spacing:-2px;}
.score-card .sc-score span{font-size:16px;opacity:.9;padding-bottom:8px;}
.stars{margin-top:12px;font-size:22px;letter-spacing:4px;color:#ffd76a;}
.score-card .sc-text{margin-top:16px;font-size:14.5px;line-height:1.8;opacity:.95;position:relative;z-index:1;}
.review-points{display:grid;grid-template-columns:1fr 1fr;gap:12px;align-content:center;}
.rp{
  display:flex;align-items:flex-start;gap:10px;padding:14px 16px;border-radius:14px;
  background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-sm);
  font-size:14px;color:#3c4b6b;line-height:1.65;
  transition:transform .25s ease,box-shadow .25s ease;
}
.rp:hover{transform:translateY(-4px);box-shadow:var(--shadow);}
.rp::before{
  content:"";flex:0 0 16px;width:16px;height:16px;border-radius:50%;
  background:linear-gradient(135deg,#2f5bff,#00c8ff);margin-top:4px;
  background-image:linear-gradient(135deg,#2f5bff,#00c8ff);
  box-shadow:inset 0 0 0 4px #fff;
}
.table-wrap{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:var(--r);border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-sm);}
table.cmp{width:100%;border-collapse:collapse;min-width:760px;font-size:14.5px;}
table.cmp th,table.cmp td{padding:15px 18px;text-align:left;border-bottom:1px solid #eef3fb;vertical-align:top;}
table.cmp thead th{background:linear-gradient(180deg,#eef4ff,#f7faff);font-weight:800;color:#13203c;font-size:14.5px;white-space:nowrap;}
table.cmp thead th.hl{background:linear-gradient(135deg,#2f5bff,#7b3dff);color:#fff;}
table.cmp tbody tr:last-child td{border-bottom:none;}
table.cmp tbody tr:hover{background:#fafcff;}
table.cmp td:first-child{font-weight:650;color:#26344f;}
.cmp-yes{color:#0f9d58;font-weight:700;}
.cmp-mid{color:#c07a00;font-weight:700;}
.cmp-no{color:#c0392b;font-weight:700;}
.cmp-note{margin-top:16px;font-size:13px;color:#7b88a6;line-height:1.8;}

/* ---------- token table ---------- */
.token-note{margin-top:16px;font-size:13px;color:#7b88a6;line-height:1.85;}

/* ---------- match ---------- */
.match-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;margin-bottom:34px;}
.match-card{
  padding:20px 16px;border-radius:16px;background:#fff;border:1px solid var(--line);
  box-shadow:var(--shadow-sm);cursor:pointer;text-align:center;font-size:14.5px;font-weight:600;color:#33415e;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease,color .25s ease,background .25s ease;
}
.match-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#b9cdff;color:var(--brand-d);}
.match-card.active{background:linear-gradient(135deg,#2f5bff,#7b3dff);color:#fff;border-color:transparent;box-shadow:0 16px 34px rgba(47,91,255,.32);}

/* ---------- help ---------- */
.help-card{
  padding:24px;border-radius:var(--r);background:#fff;border:1px solid var(--line);
  box-shadow:var(--shadow-sm);transition:transform .3s ease,box-shadow .3s ease;
}
.help-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);}
.help-card h3{font-size:16.5px;font-weight:750;color:#13203c;}
.help-card p{margin-top:10px;font-size:14px;color:#5b6a8a;line-height:1.8;}
.help-card a{display:inline-block;margin-top:14px;font-size:14px;font-weight:650;color:var(--brand-d);}
.help-card a:hover{color:var(--violet);}

/* ---------- faq ---------- */
.faq-list{max-width:920px;margin:0 auto;display:flex;flex-direction:column;gap:12px;}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow-sm);overflow:hidden;transition:box-shadow .3s ease,border-color .3s ease;}
.faq-item.open{border-color:#c3d6ff;box-shadow:var(--shadow);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:18px 22px;background:transparent;border:none;cursor:pointer;
  font-size:15.5px;font-weight:650;color:#1a2743;text-align:left;line-height:1.6;
}
.faq-q:hover{color:var(--brand-d);}
.faq-icon{position:relative;flex:0 0 16px;width:16px;height:16px;color:#2f5bff;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:currentColor;border-radius:2px;transition:transform .3s ease,opacity .3s ease;}
.faq-icon::before{left:0;top:7px;width:16px;height:2px;}
.faq-icon::after{top:0;left:7px;width:2px;height:16px;}
.faq-item.open .faq-icon::after{transform:rotate(90deg);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .38s ease;}
.faq-a-inner{padding:0 22px 20px;font-size:14.5px;color:#5b6a8a;line-height:1.9;}

/* ---------- wiki ---------- */
.wiki-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.wiki-card{
  padding:22px 20px;border-radius:16px;background:#fff;border:1px solid var(--line);
  box-shadow:var(--shadow-sm);transition:transform .3s ease,box-shadow .3s ease;
}
.wiki-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);}
.wiki-card h3{font-size:15.5px;font-weight:750;color:#13203c;}
.wiki-card p{margin-top:9px;font-size:13.5px;color:#5f6d8d;line-height:1.8;}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;}
.news-item{
  display:flex;align-items:flex-start;gap:14px;padding:20px 22px;border-radius:16px;
  background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-sm);
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.news-item:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#c9d9ff;}
.news-num{
  flex:0 0 34px;width:34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:800;color:#fff;background:linear-gradient(135deg,#2f5bff,#7b3dff);
}
.news-item h3{font-size:15px;font-weight:650;color:#1a2743;line-height:1.6;}
.news-item p{margin-top:6px;font-size:13px;color:#7b88a6;}
.article-slot{margin-top:26px;}

/* ---------- contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px;align-items:start;}
.panel{
  padding:30px;border-radius:22px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);
}
.panel h3{font-size:19px;font-weight:800;color:#13203c;}
.panel .panel-desc{margin-top:10px;font-size:14px;color:#5b6a8a;line-height:1.85;}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:22px;}
.field{display:flex;flex-direction:column;gap:6px;}
.field.full{grid-column:1/-1;}
.field label{font-size:13px;font-weight:650;color:#3c4b6b;}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border-radius:12px;border:1px solid #dde6f6;background:#fafcff;
  font-size:14.5px;color:#1a2743;font-family:inherit;transition:border-color .25s ease,box-shadow .25s ease,background .25s ease;
}
.field textarea{resize:vertical;min-height:110px;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:#8fb0ff;background:#fff;box-shadow:0 0 0 4px rgba(47,91,255,.12);
}
.form-submit{margin-top:20px;display:flex;flex-wrap:wrap;align-items:center;gap:14px;}
.form-tip{font-size:12.5px;color:#8894b0;}
.contact-list{display:flex;flex-direction:column;gap:14px;margin-top:22px;}
.contact-row{display:flex;gap:14px;align-items:flex-start;padding:14px 16px;border-radius:14px;background:#f7faff;border:1px solid #e8effc;}
.contact-row .cr-key{flex:0 0 84px;font-size:13.5px;font-weight:700;color:#2b48a8;}
.contact-row .cr-val{font-size:14px;color:#3c4b6b;word-break:break-all;line-height:1.7;}
.contact-row .cr-val a{color:var(--brand-d);font-weight:600;}
.qr-box{display:flex;align-items:center;gap:18px;margin-top:20px;padding:18px;border-radius:16px;background:linear-gradient(135deg,#f2f7ff,#fbf6ff);border:1px solid #e4ecfd;}
.qr-box img{width:132px;height:132px;object-fit:cover;border-radius:12px;background:#fff;padding:6px;border:1px solid #e2eaf9;}
.qr-box .qr-text strong{display:block;font-size:15px;color:#13203c;}
.qr-box .qr-text span{display:block;margin-top:8px;font-size:13.5px;color:#5b6a8a;line-height:1.75;}

/* ---------- join ---------- */
.join-wrap{
  display:grid;grid-template-columns:1.1fr .9fr;gap:26px;align-items:center;
  padding:40px;border-radius:26px;
  background:linear-gradient(135deg,#eef4ff 0%,#f6f0ff 52%,#eafaff 100%);
  border:1px solid #dfe9ff;box-shadow:var(--shadow);
}
.join-wrap h2{font-size:clamp(21px,2.4vw,28px);font-weight:850;color:#13203c;line-height:1.4;}
.join-wrap p{margin-top:14px;font-size:14.5px;color:#4c5b7a;line-height:1.9;}
.join-list{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:22px;}
.join-list li{
  font-size:13.5px;color:#33415e;background:rgba(255,255,255,.85);
  border:1px solid #e2eaf9;border-radius:12px;padding:12px 14px;line-height:1.6;
}
.join-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}

/* ---------- footer ---------- */
.site-footer{background:#0c1526;color:#c6d1e6;padding:64px 0 26px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:34px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-name{background:linear-gradient(120deg,#7fa8ff,#c3a8ff);-webkit-background-clip:text;background-clip:text;color:transparent;}
.site-footer p{font-size:13.5px;line-height:1.9;color:#8d9cba;}
.footer-col h4{font-size:14.5px;font-weight:750;color:#fff;margin-bottom:16px;letter-spacing:.5px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col ul li{font-size:13.5px;}
.footer-col ul li a{color:#8d9cba;transition:color .2s ease;}
.footer-col ul li a:hover{color:#7fa8ff;}
.footer-links{display:flex;flex-wrap:wrap;gap:8px 14px;}
.footer-links a{font-size:13px;color:#8d9cba;transition:color .2s ease;}
.footer-links a:hover{color:#7fa8ff;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12.5px;color:#7386a5;
}

/* ---------- floating ---------- */
.back-top{
  position:fixed;right:22px;bottom:96px;width:46px;height:46px;border-radius:14px;
  background:#fff;border:1px solid #dde7f8;box-shadow:var(--shadow);
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .3s ease,transform .3s ease,visibility .3s ease;z-index:800;
}
.back-top.show{opacity:1;visibility:visible;transform:none;}
.back-top::before{content:"";width:12px;height:12px;border-left:2px solid #2f5bff;border-top:2px solid #2f5bff;transform:rotate(45deg) translate(2px,2px);}
.back-top:hover{background:#2f5bff;border-color:#2f5bff;}
.back-top:hover::before{border-color:#fff;}
.float-service{position:fixed;right:22px;bottom:24px;z-index:820;}
.fs-btn{
  display:flex;align-items:center;gap:8px;padding:13px 20px;border-radius:999px;border:none;cursor:pointer;
  background:linear-gradient(135deg,#2f5bff,#7b3dff);color:#fff;font-size:14.5px;font-weight:700;
  box-shadow:0 14px 32px rgba(47,91,255,.36);
  transition:transform .25s ease,box-shadow .25s ease;
}
.fs-btn:hover{transform:translateY(-3px);box-shadow:0 20px 42px rgba(47,91,255,.46);}
.fs-panel{
  position:absolute;right:0;bottom:64px;width:270px;padding:20px;border-radius:20px;
  background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-lg);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .28s ease,transform .28s ease,visibility .28s ease;
}
.fs-panel.open{opacity:1;visibility:visible;transform:none;}
.fs-panel h4{font-size:15px;font-weight:800;color:#13203c;margin-bottom:6px;}
.fs-panel p{font-size:13px;color:#5b6a8a;line-height:1.75;}
.fs-panel img{width:100%;max-width:170px;display:block;margin:14px auto 10px;border-radius:12px;border:1px solid #e6eefb;}
.fs-panel .fs-row{font-size:12.8px;color:#3c4b6b;padding:7px 0;border-top:1px dashed #e6eefb;word-break:break-all;}
.fs-panel .fs-row a{color:var(--brand-d);font-weight:600;}

/* ---------- reveal ---------- */
.js .reveal{opacity:0;transform:translateY(26px);transition:opacity .65s cubic-bezier(.22,.61,.36,1),transform .65s cubic-bezier(.22,.61,.36,1);}
.js .reveal.visible{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .js .reveal{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
  .btn:hover,.stat:hover,.svc-card:hover,.step:hover,.case-card:hover,.help-card:hover,.wiki-card:hover,.news-item:hover,.net-card:hover,.sol-card:hover,.match-card:hover,.rp:hover{transform:none;}
}

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .nav{
    position:fixed;top:72px;left:0;right:0;display:none;
    background:#fff;border-bottom:1px solid var(--line);
    box-shadow:0 18px 36px rgba(24,52,120,.12);
    max-height:calc(100vh - 72px);overflow-y:auto;padding:6px 0 14px;
  }
  .nav.open{display:block;}
  .nav-links{flex-direction:column;align-items:stretch;gap:0;}
  .nav-links a{display:block;padding:13px 24px;border-radius:0;font-size:15px;}
  .nav-links a:hover{background:#f2f7ff;}
  .nav-toggle{display:flex;}
  .about-grid{grid-template-columns:1fr;gap:32px;}
  .review-top{grid-template-columns:1fr;}
  .contact-grid{grid-template-columns:1fr;}
  .join-wrap{grid-template-columns:1fr;padding:30px;}
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .net-grid{grid-template-columns:repeat(2,1fr);}
  .case-grid{grid-template-columns:repeat(2,1fr);}
  .wiki-grid{grid-template-columns:repeat(2,1fr);}
  .match-grid{grid-template-columns:repeat(3,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:760px){
  .section{padding:62px 0;}
  .hero{padding:118px 0 62px;}
  .header-inner{height:64px;}
  .nav{top:64px;max-height:calc(100vh - 64px);}
  .brand-name{font-size:16px;}
  .ai-page-logo{max-height:32px;}
  .header-actions .btn-sm{display:none;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{width:100%;}
  .hero-actions .btn-text{width:auto;}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:12px;margin-top:38px;}
  .stat{padding:18px 14px;}
  .grid-3,.grid-4,.grid-2,.steps,.net-grid,.case-grid,.wiki-grid,.news-grid,.join-list{grid-template-columns:1fr;}
  .match-grid{grid-template-columns:repeat(2,1fr);}
  .review-points{grid-template-columns:1fr;}
  .about-media{grid-template-columns:1fr;}
  .about-media figure:first-child{grid-column:span 1;}
  .sec-head{margin-bottom:36px;}
  .panel{padding:22px;}
  .form-grid{grid-template-columns:1fr;}
  .qr-box{flex-direction:column;text-align:center;}
  .qr-box .qr-text{text-align:center;}
  .footer-grid{grid-template-columns:1fr;}
  .back-top{right:16px;bottom:88px;width:42px;height:42px;}
  .float-service{right:16px;bottom:20px;}
  .fs-btn{padding:12px 16px;font-size:14px;}
  .fs-panel{width:min(270px,calc(100vw - 32px));}
  .contact-row{flex-direction:column;gap:4px;}
  .contact-row .cr-key{flex:none;}
  .score-card{padding:26px 22px;}
  .score-card .sc-score b{font-size:48px;}
  .join-wrap{padding:24px 20px;}
}