:root{
    --c1:#ff5f6d;--c2:#ff9966;--c3:#7b5cff;--c4:#2ea6ff;--c5:#12c2a0;--c6:#ffc857;
    --ink:#12172b;--ink2:#3a4160;--muted:#6b7191;--line:#e8eaf3;--bg:#ffffff;--bg2:#f7f8fe;
    --radius:18px;--shadow:0 10px 30px rgba(28,36,84,.08);--shadow-h:0 18px 48px rgba(28,36,84,.16);
  }
  *{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth}
  body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased}
  a{color:inherit;text-decoration:none}
  img{display:block;max-width:100%;height:auto}
  ul{list-style:none}
  .wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
  section{padding:78px 0;position:relative}
  .eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.08em;padding:6px 14px;border-radius:999px;color:#fff;background:linear-gradient(90deg,var(--c1),var(--c3));margin-bottom:16px}
  .sec-title{font-size:clamp(24px,3.4vw,38px);font-weight:800;line-height:1.25;letter-spacing:-.01em}
  .sec-title .grad{background:linear-gradient(90deg,var(--c1),var(--c2),var(--c3),var(--c4));-webkit-background-clip:text;background-clip:text;color:transparent}
  .sec-sub{color:var(--muted);font-size:16px;max-width:760px;margin-top:14px}
  .center{text-align:center}
  .center .sec-sub{margin-left:auto;margin-right:auto}

  /* NAV */
  header.nav{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.82);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
  .nav-inner{display:flex;align-items:center;justify-content:space-between;height:70px}
  .brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px}
  .brand img{height:38px;width:auto}
  .nav-links{display:flex;align-items:center;gap:0}
  .nav-links a{font-size:14.5px;font-weight:600;color:var(--ink2);padding:8px 12px;border-radius:9px;transition:.25s;white-space:nowrap}
  .nav-links a:hover{color:var(--c3);background:#f0efff}
  .nav-cta{display:flex;gap:10px;align-items:center}
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;font-size:15px;padding:12px 24px;border-radius:12px;border:0;cursor:pointer;transition:transform .2s,box-shadow .25s,opacity .2s}
  .btn:active{transform:scale(.97)}
  .btn-primary{color:#fff;background:linear-gradient(120deg,var(--c1),var(--c3) 55%,var(--c4));box-shadow:0 10px 24px rgba(123,92,255,.3)}
  .btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 36px rgba(123,92,255,.42)}
  .btn-ghost{color:var(--ink);background:#fff;border:1.5px solid var(--line)}
  .btn-ghost:hover{border-color:var(--c3);color:var(--c3);transform:translateY(-2px)}
  .btn-sm{padding:9px 18px;font-size:14px;border-radius:10px}
  .menu-toggle{display:none;width:44px;height:44px;border-radius:10px;border:1.5px solid var(--line);background:#fff;cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:5px}
  .menu-toggle span{display:block;width:20px;height:2px;background:var(--ink);border-radius:2px;transition:.3s}
  .menu-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .menu-toggle.open span:nth-child(2){opacity:0}
  .menu-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

  /* HERO */
  .hero{position:relative;overflow:hidden;padding:90px 0 80px;background:radial-gradient(1200px 600px at 10% -10%,#ffe9e7 0%,transparent 60%),radial-gradient(1000px 600px at 90% 0%,#e8e2ff 0%,transparent 55%),linear-gradient(180deg,#fbfbff,#ffffff)}
  .hero .blob{position:absolute;border-radius:50%;filter:blur(60px);opacity:.5;z-index:0;animation:float 14s ease-in-out infinite}
  .b1{width:320px;height:320px;background:var(--c1);top:-80px;left:-60px}
  .b2{width:360px;height:360px;background:var(--c4);bottom:-120px;right:-80px;animation-delay:-4s}
  .b3{width:240px;height:240px;background:var(--c5);top:40%;right:20%;animation-delay:-8s;opacity:.3}
  @keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-26px)}}
  .hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
  .hero h1{font-size:clamp(30px,4.6vw,54px);line-height:1.18;font-weight:900;letter-spacing:-.02em}
  .hero h1 .grad{background:linear-gradient(90deg,var(--c1),var(--c2),var(--c3),var(--c4),var(--c5));-webkit-background-clip:text;background-clip:text;color:transparent}
  .hero p.lead{margin-top:22px;font-size:17px;color:var(--ink2);max-width:600px}
  .hero-actions{margin-top:32px;display:flex;flex-wrap:wrap;gap:14px;align-items:center}
  .hero-tags{margin-top:26px;display:flex;flex-wrap:wrap;gap:10px}
  .tag{font-size:13px;font-weight:600;color:var(--ink2);background:#fff;border:1px solid var(--line);padding:7px 14px;border-radius:999px;transition:.25s}
  .tag:hover{border-color:var(--c3);color:var(--c3);transform:translateY(-2px)}
  .glass{background:rgba(255,255,255,.72);border:1px solid rgba(255,255,255,.9);box-shadow:var(--shadow);border-radius:24px;padding:26px;backdrop-filter:blur(10px)}
  .hero-metrics{display:grid;grid-template-columns:1fr 1fr;gap:14px}
  .metric{background:linear-gradient(160deg,#fff,#f6f4ff);border-radius:16px;padding:20px;border:1px solid var(--line);transition:.3s}
  .metric:hover{transform:translateY(-4px);box-shadow:var(--shadow-h)}
  .metric .num{font-size:30px;font-weight:900;background:linear-gradient(90deg,var(--c3),var(--c4));-webkit-background-clip:text;background-clip:text;color:transparent}
  .metric .lbl{font-size:13px;color:var(--muted);margin-top:4px;font-weight:600}

  /* DATA STRIP */
  .data-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:-6px}
  .data-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;text-align:center;box-shadow:var(--shadow);transition:.3s}
  .data-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-h)}
  .data-card .n{font-size:34px;font-weight:900;background:linear-gradient(120deg,var(--c1),var(--c3),var(--c4));-webkit-background-clip:text;background-clip:text;color:transparent}
  .data-card .t{color:var(--muted);font-size:14px;font-weight:600;margin-top:6px}

  /* Cards grid */
  .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
  .grid-2{display:grid;grid-template-columns:1fr 1fr;gap:26px}
  .card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:.3s;position:relative;overflow:hidden}
  .card::before{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(255,95,109,.06),rgba(123,92,255,.06));opacity:0;transition:.3s}
  .card:hover{transform:translateY(-6px);box-shadow:var(--shadow-h);border-color:transparent}
  .card:hover::before{opacity:1}
  .card>*{position:relative;z-index:1}
  .card .ico{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;margin-bottom:16px;background:linear-gradient(135deg,var(--c1),var(--c3));color:#fff}
  .card .ico svg{width:26px;height:26px}
  .card h3{font-size:18px;font-weight:800;margin-bottom:8px}
  .card p{color:var(--muted);font-size:14.5px}
  .card .chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:14px}
  .card .chips span{font-size:12px;background:#f3f1ff;color:var(--c3);padding:4px 10px;border-radius:999px;font-weight:600}

  /* Scenario list */
  .scen{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
  .scen-item{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 18px;font-size:14px;font-weight:700;color:var(--ink2);transition:.25s;display:flex;align-items:flex-start;gap:10px}
  .scen-item:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:transparent;color:var(--c3)}
  .scen-item i{flex:none;width:8px;height:8px;border-radius:50%;margin-top:8px;background:linear-gradient(135deg,var(--c1),var(--c3))}

  /* Steps / timeline */
  .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;position:relative}
  .step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;position:relative;transition:.3s}
  .step:hover{transform:translateY(-6px);box-shadow:var(--shadow-h)}
  .step .no{font-size:13px;font-weight:800;color:#fff;width:34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--c3),var(--c4));margin-bottom:14px}
  .step h4{font-size:16.5px;font-weight:800;margin-bottom:6px}
  .step p{font-size:14px;color:var(--muted)}

  /* Table */
  .table-scroll{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--line);background:#fff;box-shadow:var(--shadow)}
  table{width:100%;border-collapse:collapse;min-width:760px}
  th,td{padding:16px 18px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--line)}
  th{background:linear-gradient(120deg,#f8f7ff,#f2f9ff);font-weight:800;color:var(--ink)}
  tr:last-child td{border-bottom:0}
  td.pos{color:#0f9d76;font-weight:700}
  td.neg{color:#a3a8c0}
  .rate-cell{font-weight:900;color:var(--c3)}

  /* score card */
  .score-card{background:linear-gradient(135deg,#fff,#f8f6ff);border:1px solid var(--line);border-radius:22px;padding:34px;box-shadow:var(--shadow);display:flex;flex-wrap:wrap;gap:28px;align-items:center;justify-content:space-between;margin-bottom:26px}
  .score-left .big{font-size:64px;font-weight:900;line-height:1;background:linear-gradient(120deg,var(--c1),var(--c3),var(--c4));-webkit-background-clip:text;background-clip:text;color:transparent}
  .score-left .stars{color:var(--c6);font-size:22px;letter-spacing:3px;margin-top:8px}
  .score-left .small{color:var(--muted);font-weight:600;margin-top:4px}
  .score-right{flex:1;min-width:280px}
  .score-right ul{display:grid;grid-template-columns:1fr 1fr;gap:10px 24px}
  .score-right li{font-size:14.5px;font-weight:600;color:var(--ink2);display:flex;gap:8px;align-items:center}
  .score-right li::before{content:"✓";color:#0f9d76;font-weight:900}

  /* 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:14px;overflow:hidden;transition:.25s}
  .faq-item:hover{box-shadow:var(--shadow)}
  .faq-q{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 22px;cursor:pointer;font-weight:700;font-size:15.5px}
  .faq-q .plus{flex:none;width:26px;height:26px;border-radius:50%;background:#f2f1ff;color:var(--c3);display:flex;align-items:center;justify-content:center;font-weight:900;transition:.3s}
  .faq-item.open .plus{transform:rotate(45deg);background:linear-gradient(135deg,var(--c1),var(--c3));color:#fff}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;color:var(--muted);font-size:14.5px;padding:0 22px}
  .faq-item.open .faq-a{max-height:320px;padding:0 22px 20px}

  /* Reviews */
  .review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
  .review{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:.3s;display:flex;flex-direction:column}
  .review:hover{transform:translateY(-6px);box-shadow:var(--shadow-h)}
  .review .stars{color:var(--c6);font-size:15px;letter-spacing:2px;margin-bottom:12px}
  .review p{font-size:14.5px;color:var(--ink2);flex:1}
  .review .user{display:flex;align-items:center;gap:12px;margin-top:18px;padding-top:16px;border-top:1px solid var(--line)}
  .review .av{width:42px;height:42px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:16px;background:linear-gradient(135deg,var(--c1),var(--c3))}
  .review .who b{display:block;font-size:14.5px}
  .review .who span{font-size:12.5px;color:var(--muted)}

  /* Cases */
  .case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
  .case{border-radius:var(--radius);overflow:hidden;background:#fff;border:1px solid var(--line);transition:.3s}
  .case:hover{transform:translateY(-6px);box-shadow:var(--shadow-h)}
  .case .thumb{aspect-ratio:16/10;overflow:hidden;background:#f2f1ff}
  .case .thumb img{width:100%;height:100%;object-fit:cover;transition:.5s}
  .case:hover .thumb img{transform:scale(1.06)}
  .case .body{padding:20px}
  .case .body h4{font-size:16.5px;font-weight:800;margin-bottom:6px}
  .case .body p{font-size:14px;color:var(--muted)}

  /* Pricing */
  .price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
  .price{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;text-align:center;transition:.3s;position:relative}
  .price:hover{transform:translateY(-6px);box-shadow:var(--shadow-h)}
  .price.feature{border:2px solid var(--c3);background:linear-gradient(180deg,#faf8ff,#fff)}
  .price .badge{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:linear-gradient(90deg,var(--c1),var(--c3));color:#fff;font-size:12px;font-weight:800;padding:5px 16px;border-radius:999px;white-space:nowrap}
  .price h4{font-size:17px;font-weight:800;margin-bottom:6px}
  .price .p{font-size:34px;font-weight:900;color:var(--c3);margin:14px 0 4px}
  .price .p small{font-size:14px;color:var(--muted);font-weight:600}
  .price ul{text-align:left;margin:20px 0;display:flex;flex-direction:column;gap:10px}
  .price li{font-size:14px;color:var(--ink2);display:flex;gap:8px;align-items:center}
  .price li::before{content:"✓";color:#0f9d76;font-weight:900}

  /* Articles */
  .article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
  .article{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:.3s;display:flex;flex-direction:column;gap:12px}
  .article:hover{transform:translateY(-6px);box-shadow:var(--shadow-h)}
  .article .meta{font-size:12px;color:var(--muted);font-weight:600}
  .article h4{font-size:16px;font-weight:800;line-height:1.5}
  .article a.more{font-size:13.5px;font-weight:700;color:var(--c3)}

  /* Form */
  .form-wrap{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:start}
  .form-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:34px;box-shadow:var(--shadow)}
  .form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
  .field{margin-bottom:16px}
  .field label{display:block;font-size:13.5px;font-weight:700;margin-bottom:7px;color:var(--ink2)}
  .field input,.field select,.field textarea{width:100%;padding:12px 14px;border:1.5px solid var(--line);border-radius:11px;font-size:14.5px;font-family:inherit;color:var(--ink);background:#fbfbff;transition:.2s}
  .field input:focus,.field select:focus,.field textarea:focus{outline:0;border-color:var(--c3);background:#fff;box-shadow:0 0 0 4px rgba(123,92,255,.1)}
  .field textarea{resize:vertical;min-height:110px}
  .form-note{font-size:12.5px;color:var(--muted);margin-top:12px}
  .contact-info{display:flex;flex-direction:column;gap:14px}
  .ci{display:flex;gap:14px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 20px;transition:.25s}
  .ci:hover{transform:translateX(4px);box-shadow:var(--shadow)}
  .ci .ci-ico{flex:none;width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#ffe9e7,#e8e2ff);color:var(--c3);font-weight:800;font-size:13px}
  .ci b{display:block;font-size:14.5px}
  .ci span{font-size:13px;color:var(--muted);word-break:break-all}
  .qr-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;text-align:center;box-shadow:var(--shadow)}
  .qr-card img{width:170px;height:170px;object-fit:contain;margin:0 auto 12px;border-radius:10px}

  /* Network */
  .network{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
  .net{background:linear-gradient(160deg,#fff,#f7f8ff);border:1px solid var(--line);border-radius:16px;padding:22px;transition:.3s}
  .net:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
  .net b{font-size:16px;display:block;margin-bottom:6px}
  .net span{font-size:13.5px;color:var(--muted)}

  /* join banner */
  .join{background:linear-gradient(120deg,var(--c1),var(--c3) 55%,var(--c4));border-radius:26px;padding:54px 44px;color:#fff;position:relative;overflow:hidden}
  .join::after{content:"";position:absolute;width:420px;height:420px;border-radius:50%;background:rgba(255,255,255,.12);top:-160px;right:-100px}
  .join h2{font-size:clamp(24px,3vw,34px);font-weight:900;position:relative;z-index:1}
  .join p{margin-top:12px;opacity:.94;max-width:660px;position:relative;z-index:1}
  .join .hero-actions{position:relative;z-index:1}
  .join .btn-ghost{background:#fff;border-color:#fff;color:var(--c3)}

  /* footer */
  footer{background:#0e1226;color:#c7cbe0;padding:64px 0 26px}
  .foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:34px}
  footer h5{color:#fff;font-size:15px;font-weight:800;margin-bottom:16px}
  footer ul{display:flex;flex-direction:column;gap:10px}
  footer a{font-size:13.5px;color:#a8adcb;transition:.2s}
  footer a:hover{color:#fff}
  footer p{font-size:13.5px;color:#a8adcb}
  .foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;font-weight:800;color:#fff;font-size:18px}
  .foot-brand img{height:36px}
  .copy{margin-top:40px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);text-align:center;font-size:13px;color:#8b90b0}
  .foot-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:6px}
  .foot-tags a{font-size:12px;padding:4px 10px;border-radius:999px;background:rgba(255,255,255,.07)}

  /* floating */
  .float{position:fixed;right:18px;bottom:88px;z-index:999;display:flex;flex-direction:column;gap:12px}
  .float button,.float .fab{width:52px;height:52px;border-radius:50%;border:0;cursor:pointer;display:flex;align-items:center;justify-content:center;color:#fff;background:linear-gradient(135deg,var(--c1),var(--c3));box-shadow:0 10px 24px rgba(123,92,255,.4);transition:.25s}
  .float button:hover,.float .fab:hover{transform:scale(1.08)}
  .float .top{background:#fff;color:var(--c3);border:1.5px solid var(--line);box-shadow:var(--shadow)}
  .float .kf-pop{position:fixed;right:18px;bottom:150px;background:#fff;border-radius:16px;padding:16px;box-shadow:var(--shadow-h);width:210px;text-align:center;display:none;border:1px solid var(--line);z-index:1000}
  .float .kf-pop.show{display:block}
  .float .kf-pop img{width:100%;border-radius:10px;margin-bottom:8px}
  .float .kf-pop span{font-size:13px;color:var(--muted)}

  .reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
  .reveal.in{opacity:1;transform:none}

  .muted-note{font-size:13px;color:var(--muted)}
  .mt20{margin-top:20px}.mt30{margin-top:30px}.mt40{margin-top:40px}

  @media(max-width:980px){
    .hero-grid{grid-template-columns:1fr;gap:34px}
    .grid-3,.review-grid,.case-grid,.price-grid,.article-grid,.data-strip,.steps,.scen,.network{grid-template-columns:1fr 1fr}
    .form-wrap{grid-template-columns:1fr}
    .foot-grid{grid-template-columns:1fr 1fr}
    .nav-links{display:none;position:absolute;top:70px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;padding:12px 16px;border-bottom:1px solid var(--line);box-shadow:var(--shadow);gap:4px}
    .nav-links.open{display:flex}
    .nav-links a{padding:11px 14px;border-radius:10px}
    .menu-toggle{display:flex}
    .nav-cta .btn{display:none}
  }
  @media(max-width:620px){
    section{padding:56px 0}
    .grid-3,.review-grid,.case-grid,.price-grid,.article-grid,.data-strip,.steps,.scen,.network,.score-right ul{grid-template-columns:1fr}
    .hero-metrics{grid-template-columns:1fr 1fr}
    .hero{padding:60px 0 56px}
    .form-row{grid-template-columns:1fr}
    .join{padding:38px 24px;border-radius:20px}
    .score-card{padding:24px}
    .foot-grid{grid-template-columns:1fr}
    .brand span{display:none}
  }