:root{
  --bg:#070b18;
  --bg-2:#0c1226;
  --card:#111a33;
  --card-2:#16204a;
  --line:rgba(120,160,255,.16);
  --text:#e9eeff;
  --muted:#9aa7c7;
  --cyan:#25e6d0;
  --blue:#3d8bff;
  --violet:#8a5cff;
  --pink:#ff4fa3;
  --grad:linear-gradient(120deg,#25e6d0 0%,#3d8bff 45%,#8a5cff 100%);
  --grad-soft:linear-gradient(120deg,rgba(37,230,208,.16),rgba(61,139,255,.16),rgba(138,92,255,.16));
  --radius:16px;
  --shadow:0 18px 50px rgba(0,0,0,.45);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(1200px,92%);margin:0 auto}
section{position:relative;padding:86px 0}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.section-head{max-width:820px;margin:0 auto 48px;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.18em;color:var(--cyan);
  padding:6px 16px;border:1px solid var(--line);border-radius:999px;
  background:rgba(37,230,208,.06);margin-bottom:16px;text-transform:uppercase;
}
.section-head h2{font-size:clamp(24px,3.4vw,38px);line-height:1.3;letter-spacing:.5px}
.section-head p{color:var(--muted);margin-top:14px;font-size:15.5px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 28px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:.28s ease;white-space:nowrap;
}
.btn-primary{background:var(--grad);color:#06111f;box-shadow:0 10px 30px rgba(61,139,255,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 40px rgba(61,139,255,.5)}
.btn-ghost{border-color:var(--line);color:var(--text);background:rgba(255,255,255,.03)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan);transform:translateY(-2px)}
.btn:active{transform:scale(.97)}

/* nav */
header{position:sticky;top:0;z-index:100;background:rgba(7,11,24,.82);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:70px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;letter-spacing:.5px}
.brand img{height:34px;width:auto}
.nav-links{display:flex;gap:0;align-items:center;list-style:none;flex-wrap:nowrap}
.nav-links a{display:block;padding:8px 11px;font-size:14px;color:var(--muted);border-radius:8px;transition:.24s;white-space:nowrap}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.06)}
.nav-cta{display:flex;align-items:center;gap:10px}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{width:24px;height:2px;background:var(--text);border-radius:2px;transition:.3s}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* hero (no images) */
.hero{
  padding:96px 0 80px;
  background:
    radial-gradient(900px 480px at 12% -10%,rgba(37,230,208,.18),transparent 60%),
    radial-gradient(900px 520px at 92% 8%,rgba(138,92,255,.22),transparent 60%),
    radial-gradient(700px 400px at 50% 110%,rgba(61,139,255,.14),transparent 65%),
    linear-gradient(180deg,#070b18 0%,#0a1024 60%,#070b18 100%);
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(120,160,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(120,160,255,.06) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 50% 30%,#000 0%,transparent 75%);
  -webkit-mask-image:radial-gradient(circle at 50% 30%,#000 0%,transparent 75%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:52px;align-items:center}
.hero h1{font-size:clamp(30px,4.4vw,50px);line-height:1.24;letter-spacing:.5px;margin-bottom:20px}
.hero .lead{color:var(--muted);font-size:16.5px;max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.tag{font-size:13px;color:#cfe0ff;padding:6px 14px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.03);transition:.25s}
.tag:hover{color:var(--cyan);border-color:rgba(37,230,208,.45);transform:translateY(-2px)}
.hero-panel{display:grid;gap:16px}
.glass{
  background:linear-gradient(160deg,rgba(22,32,74,.92),rgba(12,18,38,.92));
  border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);
}
.panel-stat{display:flex;justify-content:space-between;align-items:center}
.panel-stat .num{font-size:30px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.panel-stat .lbl{color:var(--muted);font-size:13.5px}
.panel-bars{display:grid;gap:14px;margin-top:6px}
.bar-row{display:grid;gap:8px}
.bar-row .t{display:flex;justify-content:space-between;font-size:13px;color:var(--muted)}
.bar{height:8px;border-radius:999px;background:rgba(255,255,255,.07);overflow:hidden}
.bar i{display:block;height:100%;border-radius:999px;background:var(--grad);width:0;transition:width 1.4s cubic-bezier(.2,.8,.2,1)}
.hero-mini{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.hero-mini .m{border:1px solid var(--line);border-radius:14px;padding:16px;background:rgba(255,255,255,.02);transition:.28s}
.hero-mini .m:hover{transform:translateY(-3px);border-color:rgba(37,230,208,.4)}
.hero-mini .m b{display:block;font-size:20px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-mini .m span{font-size:12.5px;color:var(--muted)}

/* stats */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat-card{
  border:1px solid var(--line);border-radius:var(--radius);padding:28px 22px;
  background:linear-gradient(160deg,rgba(22,32,74,.8),rgba(12,18,38,.7));
  transition:.3s;position:relative;overflow:hidden;
}
.stat-card::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--grad);opacity:.8}
.stat-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:rgba(37,230,208,.4)}
.stat-card .num{font-size:34px;font-weight:800;letter-spacing:.5px}
.stat-card .lbl{color:var(--muted);font-size:14px;margin-top:6px}

/* cards grid */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.card{
  border:1px solid var(--line);border-radius:var(--radius);padding:26px;
  background:linear-gradient(160deg,rgba(17,26,51,.9),rgba(10,16,36,.9));
  transition:.3s;position:relative;
}
.card:hover{transform:translateY(-6px);border-color:rgba(61,139,255,.45);box-shadow:var(--shadow)}
.card .ico{
  width:46px;height:46px;border-radius:12px;display:grid;place-items:center;margin-bottom:16px;
  background:var(--grad-soft);border:1px solid var(--line);font-size:20px;
}
.card h3{font-size:18px;margin-bottom:10px;letter-spacing:.3px}
.card p{color:var(--muted);font-size:14.5px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.chips span{font-size:12px;color:#bcd0ff;padding:4px 10px;border-radius:999px;background:rgba(61,139,255,.1);border:1px solid var(--line)}

/* capability list */
.cap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.cap{display:flex;gap:12px;align-items:flex-start;padding:16px;border:1px solid var(--line);border-radius:12px;background:rgba(255,255,255,.02);transition:.26s}
.cap:hover{transform:translateY(-3px);border-color:rgba(37,230,208,.4)}
.cap .dot{width:9px;height:9px;border-radius:50%;background:var(--grad);margin-top:7px;flex:none;box-shadow:0 0 12px rgba(37,230,208,.7)}
.cap b{font-size:14.5px;display:block}
.cap small{color:var(--muted);font-size:13px;line-height:1.6}

/* steps */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;counter-reset:s}
.step{border:1px solid var(--line);border-radius:14px;padding:22px 18px;background:rgba(255,255,255,.02);position:relative;transition:.28s}
.step:hover{transform:translateY(-5px);border-color:rgba(138,92,255,.5)}
.step .n{font-size:13px;color:var(--cyan);font-weight:700;letter-spacing:.16em;margin-bottom:10px;display:block}
.step b{display:block;font-size:15.5px;margin-bottom:8px}
.step p{color:var(--muted);font-size:13.5px}

/* table */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:rgba(10,16,36,.7)}
table{width:100%;border-collapse:collapse;min-width:760px}
th,td{padding:15px 18px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--line)}
th{background:rgba(61,139,255,.1);color:#dbe6ff;font-weight:600;white-space:nowrap}
td{color:var(--muted)}
tbody tr:hover td{background:rgba(255,255,255,.03);color:var(--text)}
td strong{color:var(--text)}
.badge{display:inline-block;padding:3px 10px;border-radius:999px;font-size:12px;background:rgba(37,230,208,.12);color:var(--cyan);border:1px solid rgba(37,230,208,.3)}

/* scoring */
.score-card{display:grid;grid-template-columns:300px 1fr;gap:26px;align-items:center;border:1px solid var(--line);border-radius:20px;padding:32px;background:linear-gradient(140deg,rgba(22,32,74,.9),rgba(12,18,38,.9));box-shadow:var(--shadow)}
.score-main{text-align:center;border-right:1px solid var(--line);padding-right:22px}
.score-main .big{font-size:64px;font-weight:800;line-height:1;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.score-main .stars{color:#ffd24a;font-size:22px;letter-spacing:4px;margin:10px 0 6px}
.score-main small{color:var(--muted);font-size:13px}
.score-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px 26px}
.score-item{display:flex;justify-content:space-between;gap:12px;font-size:14px;padding:8px 0;border-bottom:1px dashed var(--line)}
.score-item span{color:var(--muted)}
.score-item b{color:var(--cyan)}

/* reviews */
.review{display:flex;flex-direction:column;gap:14px}
.review .head{display:flex;align-items:center;gap:12px}
.avatar{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;font-weight:700;color:#06111f;background:var(--grad);flex:none}
.review .who b{display:block;font-size:15px}
.review .who small{color:var(--muted);font-size:12.5px}
.review .stars{color:#ffd24a;font-size:14px;letter-spacing:2px}
.review p{color:var(--muted);font-size:14.5px}

/* cases */
.case{overflow:hidden;padding:0}
.case .thumb{aspect-ratio:16/9;overflow:hidden;background:#0d1530}
.case .thumb img{width:100%;height:100%;object-fit:cover;transition:.5s}
.case:hover .thumb img{transform:scale(1.06)}
.case .body{padding:22px}
.case .body h3{font-size:17px;margin-bottom:8px}
.case .body p{color:var(--muted);font-size:14px}

/* articles */
.article-list{display:grid;gap:14px}
.article-item{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 22px;border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.02);transition:.26s}
.article-item:hover{transform:translateX(6px);border-color:rgba(37,230,208,.45)}
.article-item b{font-size:15px}
.article-item span{color:var(--muted);font-size:13px}

/* form */
.form-card{border:1px solid var(--line);border-radius:20px;padding:34px;background:linear-gradient(150deg,rgba(22,32,74,.92),rgba(12,18,38,.92));box-shadow:var(--shadow)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1/-1}
.field label{font-size:14px;color:#cfdcff}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border-radius:10px;background:rgba(8,13,30,.85);
  border:1px solid var(--line);color:var(--text);font-size:14.5px;font-family:inherit;
  transition:.24s;outline:none;
}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(37,230,208,.14)}
.field textarea{resize:vertical;min-height:120px}
.form-note{color:var(--muted);font-size:13px;margin-top:14px}
.contact-info{display:grid;gap:14px}
.contact-row{display:flex;gap:12px;align-items:center;padding:14px 16px;border:1px solid var(--line);border-radius:12px;background:rgba(255,255,255,.02);font-size:14.5px}
.contact-row b{color:var(--cyan);font-weight:600;min-width:86px;display:inline-block}
.qr-box{display:flex;gap:18px;align-items:center;flex-wrap:wrap;margin-top:6px}
.qr-box img{width:150px;border-radius:12px;border:1px solid var(--line)}

/* banner */
.promo{border:1px solid var(--line);border-radius:20px;overflow:hidden;position:relative;background:linear-gradient(120deg,rgba(37,230,208,.1),rgba(138,92,255,.12))}
.promo-inner{display:grid;grid-template-columns:1fr 1fr;gap:0}
.promo-text{padding:44px}
.promo-text h3{font-size:clamp(22px,2.8vw,30px);margin-bottom:14px}
.promo-text p{color:var(--muted);margin-bottom:22px}
.promo-media img{width:100%;height:100%;object-fit:cover;min-height:240px}

/* tags cloud */
.cloud{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.cloud span{padding:8px 16px;border-radius:999px;border:1px solid var(--line);font-size:13.5px;color:#c4d4ff;background:rgba(255,255,255,.03);transition:.24s;cursor:default}
.cloud span:hover{color:var(--cyan);border-color:rgba(37,230,208,.45);transform:translateY(-2px)}

/* timeline */
.timeline{position:relative;padding-left:26px;display:grid;gap:26px}
.timeline::before{content:"";position:absolute;left:6px;top:4px;bottom:4px;width:2px;background:var(--grad);opacity:.6}
.tl-item{position:relative}
.tl-item::before{content:"";position:absolute;left:-26px;top:6px;width:14px;height:14px;border-radius:50%;background:var(--bg);border:2px solid var(--cyan);box-shadow:0 0 13px rgba(37,230,208,.7)}
.tl-item b{display:block;font-size:16px;margin-bottom:6px}
.tl-item span{color:var(--muted);font-size:14.5px}

/* network */
.network{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.net{border:1px solid var(--line);border-radius:14px;padding:20px;background:rgba(255,255,255,.02);transition:.26s;text-align:center}
.net:hover{transform:translateY(-4px);border-color:rgba(61,139,255,.5)}
.net b{display:block;font-size:15px;margin-bottom:6px}
.net small{color:var(--muted);font-size:13px}

/* price */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.price{border:1px solid var(--line);border-radius:18px;padding:28px;background:linear-gradient(165deg,rgba(22,32,74,.85),rgba(10,16,36,.9));transition:.3s;position:relative}
.price:hover{transform:translateY(-6px);border-color:rgba(37,230,208,.45);box-shadow:var(--shadow)}
.price.featured{border-color:rgba(37,230,208,.55);box-shadow:0 0 0 1px rgba(37,230,208,.2),var(--shadow)}
.price.featured::after{content:"推荐";position:absolute;top:-12px;right:22px;font-size:12px;padding:4px 12px;border-radius:999px;background:var(--grad);color:#06111f;font-weight:700}
.price h3{font-size:17px;margin-bottom:8px}
.price .amt{font-size:32px;font-weight:800;margin:10px 0 4px}
.price .amt small{font-size:13px;color:var(--muted);font-weight:400}
.price ul{list-style:none;margin:18px 0;display:grid;gap:10px}
.price li{font-size:14px;color:var(--muted);display:flex;gap:8px;align-items:flex-start}
.price li::before{content:"✓";color:var(--cyan);font-weight:700}

/* faq */
.faq-list{max-width:900px;margin:0 auto;display:grid;gap:12px}
.faq-item{border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.02);overflow:hidden;transition:.26s}
.faq-item.open{border-color:rgba(37,230,208,.45);background:rgba(37,230,208,.04)}
.faq-q{width:100%;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 22px;background:none;border:0;color:var(--text);font-size:15.5px;font-weight:600;cursor:pointer;text-align:left;font-family:inherit}
.faq-q .plus{width:26px;height:26px;border-radius:50%;border:1px solid var(--line);display:grid;place-items:center;flex:none;transition:.3s;color:var(--cyan)}
.faq-item.open .plus{transform:rotate(45deg);background:var(--grad);color:#06111f;border-color:transparent}
.faq-a{max-height:0;overflow:hidden;transition:max-height .38s ease}
.faq-a p{padding:0 22px 20px;color:var(--muted);font-size:14.5px}

/* footer */
footer{border-top:1px solid var(--line);background:linear-gradient(180deg,#070b18,#050810);padding:60px 0 30px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:34px}
.foot-brand img{height:36px;margin-bottom:16px}
.foot-brand p{color:var(--muted);font-size:14px;margin-bottom:14px}
.foot-col h4{font-size:15px;margin-bottom:16px;color:#dbe6ff}
.foot-col ul{list-style:none;display:grid;gap:10px}
.foot-col a,.foot-col li{color:var(--muted);font-size:14px;transition:.22s}
.foot-col a:hover{color:var(--cyan)}
.foot-bottom{margin-top:44px;padding-top:22px;border-top:1px solid var(--line);display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;color:var(--muted);font-size:13px}

/* float */
.float-cs{position:fixed;right:22px;bottom:96px;z-index:120;display:flex;flex-direction:column;gap:12px}
.float-cs button,.float-cs a{
  width:52px;height:52px;border-radius:50%;border:1px solid var(--line);background:linear-gradient(150deg,#16204a,#0c1226);
  color:var(--cyan);display:grid;place-items:center;cursor:pointer;font-size:20px;transition:.26s;box-shadow:0 8px 24px rgba(0,0,0,.4);
}
.float-cs button:hover,.float-cs a:hover{transform:translateY(-3px);border-color:var(--cyan)}
.back-top{position:fixed;right:22px;bottom:22px;z-index:120;width:52px;height:52px;border-radius:50%;border:1px solid var(--line);background:var(--grad);color:#06111f;display:grid;place-items:center;cursor:pointer;font-size:20px;opacity:0;pointer-events:none;transition:.3s;font-weight:700}
.back-top.show{opacity:1;pointer-events:auto}

/* modal */
.modal{position:fixed;inset:0;z-index:200;display:none;place-items:center;background:rgba(3,6,16,.78);backdrop-filter:blur(6px);padding:20px}
.modal.show{display:grid}
.modal-box{background:linear-gradient(160deg,#16204a,#0a1024);border:1px solid var(--line);border-radius:20px;padding:28px;max-width:360px;width:100%;text-align:center;position:relative}
.modal-box img{width:220px;margin:14px auto;border-radius:14px;border:1px solid var(--line)}
.modal-close{position:absolute;top:12px;right:14px;background:none;border:0;color:var(--muted);font-size:22px;cursor:pointer}

/* reveal */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

/* responsive */
@media(max-width:1080px){
  .nav-links{display:none;position:absolute;top:70px;left:0;right:0;background:rgba(7,11,24,.98);flex-direction:column;align-items:stretch;padding:14px 20px 22px;border-bottom:1px solid var(--line);gap:2px}
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 10px}
  .nav-toggle{display:flex}
  .hero-inner{grid-template-columns:1fr;gap:36px}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .grid-3,.cap-grid,.network,.price-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .score-card{grid-template-columns:1fr}
  .score-main{border-right:0;border-bottom:1px solid var(--line);padding:0 0 22px}
  .foot-grid{grid-template-columns:1fr 1fr}
  .promo-inner{grid-template-columns:1fr}
  .nav-cta .btn{padding:10px 16px;font-size:13.5px}
}
@media(max-width:720px){
  section{padding:60px 0}
  .hero{padding:64px 0 56px}
  .stats-grid,.grid-3,.grid-2,.cap-grid,.network,.price-grid,.steps{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .score-list{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .hero-mini{grid-template-columns:1fr 1fr}
  .form-card{padding:22px}
  .article-item{flex-direction:column;align-items:flex-start;gap:6px}
  .nav-cta .btn-ghost{display:none}
  .float-cs{bottom:84px;right:14px}
  .back-top{right:14px;bottom:16px}
  .promo-text{padding:28px}
}