:root{
  --graphite:#111418;
  --graphite-2:#0D1117;
  --surface:#1A202C;
  --surface-hover:#222C3A;
  --border:#2D3748;
  --white:#F8FAFC;
  --text:#CBD5E1;
  --muted:#94A3B8;
  --blue:#3B82F6;
  --blue-2:#6366F1;
  --orange:#F97316;
  --green:#22C55E;
  --radius:8px;
  --radius-sm:6px;
  --container:1180px;
}

*{box-sizing:border-box}
body{margin:0;background:var(--graphite);color:var(--white);font-family:Inter,"HarmonyOS Sans","Microsoft YaHei",Arial,sans-serif;line-height:1.8;}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5,h6{margin:0}
p{margin:0}

.container{width:min(var(--container),calc(100% - 48px));margin:0 auto}

/* ===== Header ===== */
.nav{height:80px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid rgba(255,255,255,.06);position:sticky;top:0;background:rgba(17,20,24,.82);backdrop-filter:blur(18px);z-index:20}
.nav .container{display:flex;align-items:center;justify-content:space-between;}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;font-size:24px;letter-spacing:-.5px}
.brand img{width:34px;height:34px;border-radius:3px;flex-shrink:0;object-fit:contain}
.brand span{color:var(--white)}
.menu{display:flex;gap:34px;color:var(--text);font-size:14px}
.menu a{position:relative;transition:color .15s ease;cursor:pointer}
.menu a:hover{color:var(--blue)}
.menu a.active{color:var(--blue)}
.nav-cta{background:var(--orange);padding:12px 20px;border-radius:6px;font-weight:700;font-size:14px;color:var(--white);transition:opacity .15s ease}
.nav-cta:hover{opacity:.9}

/* ===== Hero ===== */
.hero{position:relative;min-height:700px;overflow:hidden;background:radial-gradient(circle at 72% 28%,rgba(59,130,246,.26),transparent 35%),radial-gradient(circle at 82% 72%,rgba(249,115,22,.16),transparent 30%),linear-gradient(180deg,#111418 0%,#0D1117 100%)}
.grid-bg{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);background-size:64px 64px;mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),transparent 85%)}
.orbit{position:absolute;right:-120px;top:120px;width:680px;height:680px;border-radius:50%;border:1px solid rgba(59,130,246,.28);box-shadow:inset 0 0 80px rgba(59,130,246,.08)}
.orbit:before,.orbit:after{content:"";position:absolute;border-radius:50%;border:1px solid rgba(59,130,246,.18)}
.orbit:before{inset:80px}
.orbit:after{inset:170px}
.growth-line{position:absolute;right:90px;top:430px;width:480px;height:170px;border-top:3px solid var(--orange);border-radius:50%;transform:rotate(-12deg);filter:drop-shadow(0 0 16px rgba(249,115,22,.35))}
.hero-inner{position:relative;padding:88px 0 60px;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.eyebrow{display:inline-flex;gap:10px;align-items:center;border:1px solid rgba(59,130,246,.35);background:rgba(59,130,246,.1);color:#BFD8FF;border-radius:4px;padding:9px 14px;font-size:14px;margin-bottom:28px}
.dot{width:8px;height:8px;border-radius:50%;background:var(--blue);box-shadow:0 0 16px var(--blue)}
h1{font-size:44px;line-height:1.2;margin:0 0 24px;letter-spacing:-1.5px}
.grad{background:linear-gradient(90deg,#fff 20%,#A7C7FF 58%,#FFB27A 100%);-webkit-background-clip:text;color:transparent}
.lead{font-size:16px;color:var(--text);max-width:650px;margin:0 0 30px;line-height:1.8}
.actions{display:flex;gap:16px;margin-bottom:46px}
.btn{padding:13px 22px;border-radius:6px;font-weight:700;display:inline-flex;gap:10px;align-items:center;font-size:14px;transition:opacity .15s ease;cursor:pointer;border:none}
.btn:hover{opacity:.9}
.btn-primary{background:var(--blue);color:var(--white)}
.btn-cta{background:var(--orange);color:var(--white)}
.btn-secondary{background:var(--surface);color:var(--white);border:1px solid var(--border)}
.btn-secondary:hover{background:var(--surface-hover);border-color:var(--blue)}
.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;max-width:640px}
.metric{background:rgba(26,32,44,.72);border:1px solid var(--border);border-radius:var(--radius-sm);padding:18px 20px}
.metric strong{font-size:30px;display:block;color:var(--white)}
.metric span{display:block;color:var(--muted);font-size:14px}

/* ===== Dashboard Visual ===== */
.visual{position:relative}
.dashboard{background:rgba(26,32,44,.8);border:1px solid rgba(59,130,246,.28);border-radius:6px;padding:22px;box-shadow:0 30px 90px rgba(0,0,0,.35);backdrop-filter:blur(10px)}
.dash-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px;color:var(--muted);font-size:13px}
.pill{padding:6px 10px;background:rgba(34,197,94,.12);color:#86EFAC;border-radius:4px;border:1px solid rgba(34,197,94,.25);font-size:12px;font-weight:600}
.chart{height:230px;border-radius:4px;background:linear-gradient(180deg,rgba(59,130,246,.18),rgba(59,130,246,.04));position:relative;overflow:hidden;border:1px solid rgba(255,255,255,.06)}
.chart svg{position:absolute;inset:0;width:100%;height:100%}
.insights{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:14px}
.insight{background:rgba(13,17,23,.7);border:1px solid rgba(255,255,255,.07);padding:16px;border-radius:4px}
.insight b{display:block;margin-bottom:6px;font-size:14px}
.insight p{margin:0;color:var(--muted);font-size:13px;line-height:1.5}
.orange{color:var(--orange)}
.blue{color:var(--blue)}

/* ===== Sections ===== */
section{padding:110px 0;border-top:1px solid rgba(255,255,255,.06)}
.section-head{max-width:780px;margin-bottom:42px}
.kicker{color:var(--blue);font-weight:800;margin-bottom:12px;font-size:14px;letter-spacing:.5px}
.section-head h2{font-size:34px;line-height:1.3;margin:0 0 16px;letter-spacing:-.5px}
.section-head p{color:var(--text);font-size:16px;margin:0;line-height:1.8}

/* ===== Cards ===== */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:30px;transition:.15s ease}
.card:hover{border-color:var(--blue);background:var(--surface-hover)}
.icon{width:44px;height:44px;border-radius:6px;background:rgba(59,130,246,.14);display:grid;place-items:center;color:var(--blue);font-size:22px;margin-bottom:18px}
.card h3{margin:0 0 12px;font-size:18px}
.card p{margin:0;color:var(--muted);font-size:16px;line-height:1.75}
.card .card-link{display:inline-flex;align-items:center;gap:6px;color:var(--blue);font-size:14px;font-weight:600;margin-top:16px}
.card .card-link:hover{gap:10px}

/* ===== Process / Steps ===== */
.process{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.step{border:1px solid var(--border);background:linear-gradient(180deg,rgba(26,32,44,.95),rgba(13,17,23,.95));padding:28px;border-radius:var(--radius)}
.num{color:var(--orange);font-weight:900;font-size:28px}
.step h3{margin:18px 0 10px;font-size:18px}
.step p{margin:0;color:var(--muted);font-size:14px;line-height:1.75}

/* ===== CTA Block ===== */
.cta-block{background:linear-gradient(135deg,rgba(59,130,246,.18),rgba(249,115,22,.16));border:1px solid rgba(255,255,255,.09);border-radius:8px;padding:48px;display:flex;justify-content:space-between;gap:28px;align-items:center}
.cta-block h2{font-size:30px;margin:0 0 12px;line-height:1.3}
.cta-block p{color:var(--text);margin:0;font-size:16px;line-height:1.8}

/* ===== Feature Grid (2 col) ===== */
.features-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}

/* ===== Scenario Grid (3 col) ===== */
.scenarios-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}

/* ===== Pricing ===== */
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.pricing-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:36px 30px;transition:.15s ease;position:relative}
.pricing-card:hover{border-color:var(--blue)}
.pricing-card.featured{border-color:var(--orange);background:linear-gradient(180deg,rgba(249,115,22,.06),var(--surface))}
.pricing-badge{position:absolute;top:-1px;right:24px;background:var(--orange);color:var(--white);padding:6px 14px;border-radius:0 0 6px 6px;font-size:12px;font-weight:700}
.pricing-tier{font-size:16px;color:var(--muted);margin-bottom:12px}
.pricing-price{display:flex;align-items:baseline;gap:2px;margin-bottom:8px}
.price-symbol{font-size:22px;color:var(--text)}
.price-amount{font-size:40px;font-weight:800;letter-spacing:-1px}
.price-period{color:var(--muted);font-size:14px}
.pricing-token{color:var(--text);margin-bottom:24px;font-size:14px}
.pricing-token strong{color:var(--orange)}
.pricing-features{margin-bottom:28px}
.pricing-features li{padding:8px 0;color:var(--text);font-size:14px;border-bottom:1px solid rgba(255,255,255,.04);display:flex;align-items:center;gap:10px;line-height:1.6}
.pricing-features li:before{content:"✓";color:var(--green);font-weight:700}
.pricing-btn{display:block;text-align:center;padding:14px;border-radius:6px;font-weight:700;font-size:14px;background:var(--surface-hover);border:1px solid var(--border);color:var(--white);transition:.15s ease}
.pricing-btn:hover{border-color:var(--blue);background:var(--blue)}
.pricing-btn.primary{background:var(--orange);border-color:var(--orange)}
.pricing-btn.primary:hover{opacity:.9}

/* ===== Form ===== */
.contact-form{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:36px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px}
.form-group{display:flex;flex-direction:column;gap:8px}
.form-group label{font-size:14px;color:var(--text);font-weight:500}
.form-group input,.form-group select,.form-group textarea{background:var(--graphite-2);border:1px solid var(--border);border-radius:6px;padding:12px 14px;color:var(--white);font-size:14px;font-family:inherit;transition:border-color .15s ease;line-height:1.6}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--blue)}
.form-group textarea{resize:vertical;min-height:120px}
.form-submit{margin-top:8px}

/* ===== Two Column Layout ===== */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}

/* ===== Footer ===== */
.footer{padding:54px 0;background:var(--graphite-2);color:var(--muted);font-size:14px;border-top:1px solid rgba(255,255,255,.06)}
.footer .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:24px}
.footer-links{display:flex;gap:32px}
.footer-links a:hover{color:var(--blue)}

/* ===== Lang Switch ===== */
.lang-switch{display:flex;gap:6px;margin-right:16px}
.lang-btn{padding:6px 10px;border-radius:6px;font-size:12px;font-weight:600;color:var(--muted);background:transparent;border:1px solid var(--border);cursor:pointer;transition:.15s ease}
.lang-btn:hover{color:var(--white);border-color:var(--blue)}
.lang-btn.active{background:var(--blue);color:var(--white);border-color:var(--blue)}
.nav-right{display:flex;align-items:center;gap:12px}

/* ===== Responsive ===== */
@media(max-width:900px){
  .menu{display:none}
  .hero-inner{grid-template-columns:1fr}
  .cards,.process,.metrics,.pricing-grid,.features-grid,.scenarios-grid{grid-template-columns:1fr}
  h1{font-size:32px}
  .section-head h2{font-size:26px}
  .cta-block{display:block}
  .cta-block .btn{margin-top:20px}
  .visual{display:none}
  .form-row{grid-template-columns:1fr}
  .two-col{grid-template-columns:1fr;gap:32px}
  h1{letter-spacing:-.5px}
  .section-head h2{letter-spacing:-.3px}
  .hero{min-height:auto}
  .hero-inner{padding:50px 0 36px}
  section{padding:60px 0}
  .lead{font-size:15px}
  .price-amount{font-size:36px}
}