:root{--bg:#0b1220;--bg2:#111a2e;--card:#141f36;--line:#22304d;--text:#e8eefb;--muted:#9fb0cc;--accent:#4f8cff;--accent2:#22d3a5;--radius:14px;}
  *{box-sizing:border-box;margin:0;padding:0;}
  html{scroll-behavior:smooth;}
  body{font-family:"Inter","Segoe UI",system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Hiragino Sans",sans-serif;background:var(--bg);background-image:radial-gradient(1100px 550px at 85% -10%,rgba(79,140,255,.10),transparent 60%),radial-gradient(900px 500px at 5% 110%,rgba(34,211,165,.06),transparent 60%);background-attachment:fixed;color:var(--text);line-height:1.6;}
  a{color:inherit;text-decoration:none;}
  .wrap{max-width:1100px;margin:0 auto;padding:0 20px;}
  header{position:sticky;top:0;z-index:50;background:rgba(11,18,32,.85);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);}
  .nav{display:flex;align-items:center;justify-content:space-between;height:64px;gap:12px;}
  .logo{font-weight:800;font-size:20px;white-space:nowrap;display:flex;align-items:center;gap:9px;}
  .logo .logo-mark{width:12px;height:12px;background:linear-gradient(135deg,#5a97ff,#22d3a5);border-radius:3px;box-shadow:0 0 12px rgba(79,140,255,.6);flex-shrink:0;}
  .logo span{color:var(--accent);}
  nav{display:flex;align-items:center;gap:18px;flex-wrap:wrap;}
  nav .links a{position:relative;color:var(--muted);font-size:14px;padding:6px 2px;transition:color .2s;}
  nav .links a::after{content:"";position:absolute;left:50%;bottom:0;width:0;height:2px;background:linear-gradient(90deg,#5a97ff,#22d3a5);transition:width .25s,left .25s;border-radius:2px;}
  nav .links a:hover{color:#fff;}
  nav .links a:hover::after{left:0;width:100%;}
  .lang-dropdown{position:relative;}
  .lang-current{background:var(--card);border:1px solid var(--line);color:var(--text);padding:8px 14px;border-radius:8px;cursor:pointer;font-size:13px;font-family:inherit;display:flex;align-items:center;gap:6px;transition:.2s;}
  .lang-current:hover{border-color:var(--accent);}
  .lang-menu{position:absolute;top:calc(100% + 8px);right:0;background:linear-gradient(160deg,rgba(24,35,58,.97),rgba(17,26,46,.99));backdrop-filter:blur(10px);border:1px solid var(--line);border-radius:10px;padding:6px;min-width:158px;display:none;box-shadow:0 12px 32px rgba(0,0,0,.5);z-index:60;}
  .lang-menu.open{display:block;}
  .lang-opt{display:block;width:100%;text-align:left;background:none;border:none;color:var(--muted);padding:8px 12px;border-radius:6px;cursor:pointer;font-size:13px;font-family:inherit;transition:.15s;}
  .lang-opt:hover{background:var(--bg2);color:#fff;}
  .lang-opt.active{color:var(--accent2);font-weight:600;}
  .btn{display:inline-block;background:linear-gradient(135deg,#5a97ff,#3b6fe0);color:#fff;font-weight:600;padding:11px 22px;border-radius:9px;font-size:14px;border:none;cursor:pointer;transition:.2s;box-shadow:0 4px 14px rgba(79,140,255,.25);}
  .btn:hover{filter:brightness(1.1);transform:translateY(-1px);}
  .btn.ghost{background:transparent;border:1px solid var(--line);color:var(--text);}
  .btn.green{background:var(--accent2);color:#06231a;}
  .hero{padding:90px 0 70px;text-align:center;background:radial-gradient(900px 400px at 50% -10%,rgba(79,140,255,.18),transparent 60%);}
  .badge{display:inline-block;border:1px solid var(--line);color:var(--accent2);font-size:13px;padding:6px 14px;border-radius:999px;margin-bottom:22px;}
  .hero h1{font-size:44px;line-height:1.15;font-weight:800;max-width:860px;margin:0 auto 18px;background:linear-gradient(135deg,#ffffff 35%,#9fc3ff 100%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}
  .hero p{font-size:18px;color:var(--muted);max-width:760px;margin:0 auto 30px;}
  .cta-row{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}
  .trust{margin-top:34px;font-size:14px;color:var(--muted);}
  .trust b{color:var(--text);}
  .trust span{margin:0 8px;color:var(--line);}
  .stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;padding:26px 0 10px;}
  .stat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;text-align:center;}
  .stat b{display:block;font-size:26px;color:var(--accent);text-shadow:0 0 22px rgba(79,140,255,.55);}
  .stat span{font-size:13px;color:var(--muted);}
  section{padding:70px 0;}
  .sec-head{text-align:center;max-width:700px;margin:0 auto 40px;}
  .sec-head h2{font-size:32px;font-weight:800;margin-bottom:12px;background:linear-gradient(135deg,#fff 40%,#9fc3ff 100%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}
  .sec-head p{color:var(--muted);}
  .grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
  .card{background:linear-gradient(160deg,rgba(24,35,58,.85),rgba(17,26,46,.95));backdrop-filter:blur(8px);border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:.25s;}
  .card:hover{transform:translateY(-3px);border-color:var(--accent);box-shadow:0 8px 28px rgba(79,140,255,.28),0 0 0 1px rgba(79,140,255,.15);}
  .card h3{font-size:17px;margin-bottom:8px;}
  .card p{font-size:14px;color:var(--muted);}
  .card .tag{display:inline-block;font-size:12px;color:var(--accent2);border:1px solid var(--line);border-radius:6px;padding:2px 8px;margin-bottom:10px;}
  .grid6{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
  .why .card b{display:block;font-size:16px;margin-bottom:6px;}
  .price-wrap{overflow-x:auto;}
  table{width:100%;border-collapse:collapse;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;min-width:680px;}
  th,td{padding:15px 18px;text-align:left;font-size:14px;border-bottom:1px solid var(--line);}
  th{background:var(--bg2);color:var(--muted);font-weight:600;}
  td b{font-size:15px;}
  .note{font-size:13px;color:var(--muted);margin-top:16px;max-width:840px;}
  .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;counter-reset:step;}
  .step{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;}
  .step::before{counter-increment:step;content:counter(step);display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:50%;background:var(--accent);color:#fff;font-weight:700;margin-bottom:12px;}
  .step b{display:block;margin-bottom:6px;font-size:16px;}
  .step p{font-size:14px;color:var(--muted);}
  .pay-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
  .faq-item{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);margin-bottom:12px;overflow:hidden;}
  .faq-item summary{padding:16px 20px;cursor:pointer;font-weight:600;font-size:15px;list-style:none;display:flex;justify-content:space-between;align-items:center;}
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary::after{content:"+";font-size:20px;color:var(--muted);transition:.2s;}
  .faq-item[open] summary::after{content:"–";color:var(--accent);}
  .faq-item .faq-a{padding:0 20px 16px;color:var(--muted);font-size:14px;}
  @media(max-width:560px){.pay-cards{grid-template-columns:1fr;}}
  .contact{background:var(--bg2);border-top:1px solid var(--line);}
  .contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start;}
  .contact h3{font-size:20px;margin-bottom:10px;}
  .contact p{color:var(--muted);font-size:14px;margin-bottom:20px;}
  .btnline{display:flex;gap:10px;flex-wrap:wrap;margin-top:6px;}
  form{display:grid;grid-template-columns:1fr 1fr;gap:14px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;}
  .full{grid-column:1 / -1;}
  label{font-size:13px;color:var(--muted);display:block;margin-bottom:6px;}
  input,select,textarea{width:100%;background:var(--bg);border:1px solid var(--line);color:var(--text);border-radius:8px;padding:11px 12px;font-size:14px;font-family:inherit;}
  textarea{resize:vertical;min-height:70px;}
  input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent);}
  .form-msg{grid-column:1/-1;font-size:14px;display:none;}
  .form-msg.ok{color:var(--accent2);}
  .form-msg.err{color:#ff6b6b;}
  footer{padding:36px 0 50px;border-top:1px solid var(--line);color:var(--muted);font-size:13px;}
  footer .wrap{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;}
  @media(max-width:900px){.grid4{grid-template-columns:repeat(2,1fr);}.grid6{grid-template-columns:repeat(2,1fr);}.steps{grid-template-columns:repeat(2,1fr);}.contact-grid{grid-template-columns:1fr;}.stats{grid-template-columns:repeat(2,1fr);}.hero h1{font-size:34px;}nav .links{display:none;}}
  @media(max-width:560px){.grid4,.grid6,.steps{grid-template-columns:1fr;}.stats{grid-template-columns:1fr 1fr;}}
  .mining-warning{background:#2a1215;border:1px solid #ff6b6b;color:#ffb0b0;border-radius:var(--radius);padding:14px 18px;font-size:14px;font-weight:600;margin-bottom:24px;text-align:center;line-height:1.7;}
  .mining-warning b{color:#ff6b6b;}
  .pricing-tabs{display:flex;gap:8px;justify-content:center;margin-bottom:24px;flex-wrap:wrap;}
  .tab-btn{background:var(--card);border:1px solid var(--line);color:var(--muted);padding:10px 26px;border-radius:9px;font-size:15px;font-weight:600;cursor:pointer;font-family:inherit;transition:.2s;}
  .tab-btn:hover{color:#fff;}
  .tab-btn.active{background:var(--accent);color:#fff;border-color:var(--accent);}
  .tab-panel{display:none;}
  .tab-panel.active{display:block;}
  .configurator{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;margin-bottom:24px;}
  .config-group{margin-bottom:20px;}
  .config-group:last-child{margin-bottom:0;}
  .config-label{display:block;font-size:13px;color:var(--muted);margin-bottom:10px;font-weight:600;}
  .chip-group{display:flex;gap:8px;flex-wrap:wrap;}
  .chip{background:var(--bg);border:1px solid var(--line);color:var(--text);padding:9px 16px;border-radius:9px;font-size:14px;cursor:pointer;font-family:inherit;transition:.15s;}
  .chip:hover{border-color:var(--accent);}
  .chip.active{background:var(--accent);color:#fff;border-color:var(--accent);font-weight:600;}
  .gpu-group{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:10px;}
  .gpu-card{background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:14px;cursor:pointer;transition:.15s;text-align:left;font-family:inherit;color:var(--text);}
  .gpu-card:hover{border-color:var(--accent);}
  .gpu-card.active{border-color:var(--accent);background:rgba(79,140,255,.12);}
  .gpu-card b{display:block;font-size:15px;margin-bottom:3px;}
  .gpu-card .gpu-vram{font-size:12px;color:var(--muted);}
  .gpu-card .gpu-price{font-size:13px;color:var(--accent2);font-weight:700;margin-top:6px;}
  .fw-table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:10px;}
  .fw-table{width:100%;border-collapse:collapse;min-width:520px;}
  .fw-table th{background:var(--bg2);color:var(--muted);font-size:13px;font-weight:600;padding:10px 14px;text-align:left;border-bottom:1px solid var(--line);}
  .fw-table td{padding:10px 14px;font-size:14px;border-bottom:1px solid var(--line);}
  .fw-table tr{cursor:pointer;}
  .fw-table tr:hover td{background:rgba(79,140,255,.08);}
  .fw-table tr.active td{background:rgba(79,140,255,.14);}
  .fw-table tr.active td:first-child{box-shadow:inset 3px 0 0 var(--accent);}
  .price-display{margin-top:6px;padding:16px;background:var(--bg2);border:1px solid var(--accent);border-radius:10px;text-align:center;}
  .price-display .big{font-size:30px;color:var(--accent2);font-weight:800;}
  .price-display .unit{font-size:13px;color:var(--muted);margin-left:6px;}
  .price-display .detail{font-size:12px;color:var(--muted);margin-top:4px;}

.chat-fab{position:fixed;bottom:24px;right:24px;width:56px;height:56px;border-radius:50%;background:var(--accent);color:#fff;font-size:24px;border:none;cursor:pointer;box-shadow:0 4px 16px rgba(0,0,0,.35);z-index:999;display:flex;align-items:center;justify-content:center;transition:.2s;}
.chat-fab:hover{filter:brightness(1.1);transform:translateY(-2px);}
.chat-win{position:fixed;bottom:90px;right:24px;width:340px;max-width:calc(100vw - 40px);background:var(--card);border:1px solid var(--line);border-radius:16px;box-shadow:0 8px 32px rgba(0,0,0,.45);z-index:999;display:none;flex-direction:column;overflow:hidden;}
.chat-win.open{display:flex;}
.chat-head{display:flex;justify-content:space-between;align-items:center;padding:14px 16px;background:var(--bg2);border-bottom:1px solid var(--line);font-weight:700;font-size:15px;}
.chat-head button{background:none;border:none;color:var(--muted);font-size:24px;cursor:pointer;line-height:1;}
.chat-body{height:320px;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:10px;}
.chat-msg{max-width:82%;padding:10px 14px;border-radius:12px;font-size:14px;line-height:1.5;white-space:pre-wrap;word-break:break-word;}
.chat-msg.bot{background:var(--bg2);align-self:flex-start;border-bottom-left-radius:4px;}
.chat-msg.user{background:var(--accent);color:#fff;align-self:flex-end;border-bottom-right-radius:4px;}
.chat-input{display:flex;gap:8px;padding:12px;border-top:1px solid var(--line);}
.chat-input input{flex:1;background:var(--bg);border:1px solid var(--line);color:var(--text);border-radius:8px;padding:10px 12px;font-size:14px;font-family:inherit;}
.chat-input button{background:var(--accent);color:#fff;border:none;border-radius:8px;padding:0 16px;cursor:pointer;font-weight:600;font-family:inherit;}

.trial-hint{display:inline-block;background:rgba(34,211,165,.12);border:1px solid var(--accent2);color:var(--accent2);font-weight:600;font-size:15px;padding:8px 18px;border-radius:999px;margin-top:8px;margin-bottom:26px;}

.disk-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:14px;}
.disk-fixed{color:var(--muted);}
.disk-sep{color:var(--line);}
.disk-btn{width:36px;height:36px;background:var(--bg);border:1px solid var(--line);color:var(--text);border-radius:8px;cursor:pointer;font-size:18px;font-family:inherit;transition:.15s;line-height:1;}
.disk-btn:hover{border-color:var(--accent);background:rgba(79,140,255,.1);}
.disk-val{font-weight:700;font-size:16px;color:var(--accent2);min-width:40px;text-align:center;}
.disk-note{color:var(--muted);font-size:12px;}

.promise{color:#ff9800;font-size:20px;font-weight:700;text-align:center;margin-top:18px;grid-column:1/-1;}

.search-box{max-width:620px;margin:26px auto 0;display:flex;gap:10px;}
.search-box input{flex:1;background:var(--card);border:1px solid var(--line);color:var(--text);border-radius:10px;padding:14px 18px;font-size:16px;font-family:inherit;}
.search-box button{background:var(--accent);color:#fff;border:none;border-radius:10px;padding:0 26px;cursor:pointer;font-weight:600;font-size:15px;font-family:inherit;}
.search-hint{color:var(--accent2);margin-top:14px;font-size:14px;}