*{box-sizing:border-box;}
  html{scroll-behavior:smooth;scroll-padding-top:84px;-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
    font-size:16px;
    line-height:1.75;
    color:#1b2135;
    background:#fffaf4;
    overflow-x:hidden;
  }
  body::before{
    content:"";
    position:fixed;
    inset:0;
    z-index:-1;
    pointer-events:none;
    background:
      radial-gradient(900px 520px at 6% -8%, rgba(255,138,0,.22), transparent 65%),
      radial-gradient(820px 520px at 96% 2%, rgba(26,107,255,.16), transparent 62%),
      radial-gradient(760px 620px at 50% 108%, rgba(0,194,214,.15), transparent 66%),
      linear-gradient(180deg,#fffdf9 0%,#f6faff 52%,#fff8f1 100%);
  }
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
  h1,h2,h3,h4{margin:0;color:#1b2135;letter-spacing:-0.01em;line-height:1.28;}
  p{margin:0;}
  a{color:#c94200;text-decoration:none;}
  img{max-width:100%;}
  ul,ol{margin:0;padding:0;}

  /* header */
  .site-header{
    position:sticky;top:0;z-index:50;
    background:rgba(255,253,249,.88);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid rgba(27,33,53,.08);
  }
  .header-inner{
    position:relative;
    display:flex;
    align-items:center;
    gap:18px;
    min-height:66px;
  }
  .brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
  .brand-mark{
    width:40px;height:40px;flex:0 0 auto;
    border-radius:12px;
    background:linear-gradient(135deg,rgba(255,138,0,.22),rgba(26,107,255,.22));
    border:1px solid rgba(255,138,0,.3);
    display:flex;align-items:center;justify-content:center;
    overflow:hidden;
  }
  .brand-mark img{width:100%;height:auto;display:block;}
  .brand-name{font-size:17px;font-weight:800;color:#1b2135;letter-spacing:.02em;white-space:nowrap;}
  .nav-links{
    display:flex;
    align-items:center;
    justify-content:flex-start;
    gap:0;
    flex:1 1 auto;
    flex-wrap:nowrap;
  }
  .nav-links a{
    display:inline-block;
    padding:8px 10px;
    font-size:14px;
    font-weight:600;
    color:#3b4761;
    border-radius:9px;
    white-space:nowrap;
    transition:color .25s ease,background .25s ease;
  }
  .nav-links a:hover{color:#c94200;background:rgba(255,138,0,.12);}
  .header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
  .nav-toggle{
    display:none;
    width:40px;height:38px;
    border:1px solid rgba(27,33,53,.16);
    border-radius:10px;
    background:#fff;
    cursor:pointer;
    align-items:center;justify-content:center;
    flex-direction:column;gap:4px;
    padding:0;
  }
  .nav-toggle span{display:block;width:17px;height:2px;background:#2a3450;border-radius:2px;transition:transform .3s ease,opacity .3s ease;}
  .nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
  .nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
  .nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

  /* buttons */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    padding:12px 24px;
    border-radius:12px;
    font-size:15px;
    font-weight:700;
    border:1px solid transparent;
    cursor:pointer;
    transition:transform .25s ease,box-shadow .25s ease,background .25s ease,color .25s ease,border-color .25s ease;
    font-family:inherit;
  }
  .btn-primary{
    background:linear-gradient(135deg,#d8430a,#ef6c15);
    color:#ffffff;
    box-shadow:0 14px 26px -14px rgba(216,67,10,.72);
  }
  .btn-primary:hover{transform:translateY(-2px);box-shadow:0 20px 32px -14px rgba(216,67,10,.78);}
  .btn-outline{
    background:#ffffff;
    color:#b83c00;
    border-color:rgba(216,67,10,.42);
  }
  .btn-outline:hover{transform:translateY(-2px);background:#fff4ea;border-color:rgba(216,67,10,.68);}
  .btn-ghost{
    background:#1b2135;
    color:#ffffff;
    padding:9px 18px;
    font-size:14px;
    border-radius:10px;
  }
  .btn-ghost:hover{transform:translateY(-2px);background:#0f1729;}
  .btn-light{
    background:#ffffff;
    color:#b83c00;
    box-shadow:0 12px 24px -16px rgba(0,0,0,.5);
  }
  .btn-light:hover{transform:translateY(-2px);}

  /* sections */
  .sec{padding:66px 0;}
  .sec-tight{padding:48px 0;}
  .sec-head{max-width:760px;margin:0 auto 38px;text-align:center;}
  .eyebrow{
    display:inline-block;
    font-size:13px;
    font-weight:800;
    letter-spacing:.1em;
    color:#b83c00;
    background:rgba(255,138,0,.14);
    border:1px solid rgba(255,138,0,.24);
    padding:5px 13px;
    border-radius:999px;
    margin:0 0 14px;
  }
  .sec-head h2{font-size:clamp(23px,3.1vw,33px);margin:0 0 14px;}
  .sec-desc{color:#4b5568;font-size:16px;}

  /* hero */
  .hero{padding:56px 0 34px;position:relative;}
  .hero-inner{display:grid;grid-template-columns:1.12fr .88fr;gap:44px;align-items:center;}
  .hero h1{font-size:clamp(28px,4.4vw,46px);margin:0 0 18px;font-weight:800;}
  .hero h1 em{font-style:normal;color:#c94200;}
  .hero-lead{font-size:16.5px;color:#4b5568;max-width:640px;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:28px 0 22px;}
  .hero-actions .btn{padding:13px 28px;font-size:16px;}
  .hero-points{list-style:none;display:flex;flex-wrap:wrap;gap:10px 22px;margin:0;}
  .hero-points li{
    position:relative;
    padding-left:20px;
    font-size:14.5px;
    color:#3b4761;
    font-weight:600;
  }
  .hero-points li::before{
    content:"";
    position:absolute;left:0;top:9px;
    width:8px;height:8px;border-radius:50%;
    background:linear-gradient(135deg,#ff8a00,#1a6bff);
  }
  .hero-panel{
    position:relative;
    background:rgba(255,255,255,.86);
    border:1px solid rgba(27,33,53,.09);
    border-radius:24px;
    padding:24px;
    box-shadow:0 32px 60px -40px rgba(27,33,53,.6);
    overflow:hidden;
    animation:floatPanel 7s ease-in-out infinite alternate;
  }
  @keyframes floatPanel{
    from{transform:translateY(0);}
    to{transform:translateY(-10px);}
  }
  .panel-glow{
    position:absolute;
    width:230px;height:230px;
    right:-70px;top:-90px;
    border-radius:50%;
    background:radial-gradient(circle,rgba(255,138,0,.42),transparent 70%);
    pointer-events:none;
  }
  .metric-grid{position:relative;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;}
  .metric{
    background:#fffdfa;
    border:1px solid rgba(27,33,53,.08);
    border-radius:16px;
    padding:16px 16px 14px;
    transition:transform .3s ease,border-color .3s ease;
  }
  .metric:hover{transform:translateY(-3px);border-color:rgba(255,138,0,.45);}
  .metric-num{display:block;font-size:26px;font-weight:800;color:#c94200;line-height:1.2;}
  .metric-label{display:block;font-size:13.5px;color:#4b5568;margin-top:4px;}

  /* about */
  .about-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:36px;align-items:start;}
  .about-media{display:grid;gap:16px;}
  .about-media img{
    width:100%;height:auto;display:block;
    border-radius:18px;
    border:1px solid rgba(27,33,53,.08);
    background:#fff;
  }
  .about-body p{color:#4b5568;margin-bottom:20px;font-size:16px;}
  .check-list{list-style:none;display:grid;gap:12px;}
  .check-list li{
    position:relative;
    padding:0 0 0 30px;
    font-size:15px;
    color:#2c3550;
  }
  .check-list li::before{
    content:"";
    position:absolute;left:0;top:6px;
    width:16px;height:16px;
    border-radius:5px;
    background:linear-gradient(135deg,#ff8a00,#1a6bff);
    opacity:.9;
  }
  .check-list strong{color:#1b2135;font-weight:700;}

  /* cards */
  .grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;align-items:start;}
  .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;align-items:stretch;}
  .grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;align-items:stretch;}
  .card{
    background:#ffffff;
    border:1px solid rgba(27,33,53,.09);
    border-radius:18px;
    padding:24px;
    box-shadow:0 18px 38px -32px rgba(27,33,53,.6);
    transition:transform .35s ease,box-shadow .35s ease,border-color .35s ease;
  }
  .card:hover{
    transform:translateY(-5px);
    box-shadow:0 26px 48px -30px rgba(27,33,53,.45);
    border-color:rgba(255,138,0,.42);
  }
  .card h3{font-size:18px;margin:0 0 10px;}
  .card p{font-size:14.8px;color:#4b5568;}
  .svc-icon{
    position:relative;
    width:44px;height:44px;
    border-radius:14px;
    background:linear-gradient(135deg,rgba(255,138,0,.2),rgba(26,107,255,.2));
    border:1px solid rgba(255,138,0,.28);
    margin-bottom:16px;
  }
  .svc-icon::after{
    content:"";
    position:absolute;inset:13px;
    border-radius:6px;
    background:linear-gradient(135deg,#f26419,#1a6bff);
    opacity:.88;
  }
  .svc-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:14px;}
  .svc-tags span{
    font-size:12.5px;
    color:#8a4a12;
    background:rgba(255,138,0,.12);
    border:1px solid rgba(255,138,0,.2);
    padding:3px 9px;
    border-radius:999px;
  }

  /* steps */
  .step-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;margin-bottom:36px;}
  .step{
    background:#ffffff;
    border:1px solid rgba(27,33,53,.09);
    border-radius:18px;
    padding:22px 20px;
    transition:transform .35s ease,box-shadow .35s ease;
  }
  .step:hover{transform:translateY(-4px);box-shadow:0 22px 40px -30px rgba(27,33,53,.6);}
  .step-idx{
    display:inline-flex;align-items:center;justify-content:center;
    width:34px;height:34px;
    border-radius:11px;
    font-size:15px;font-weight:800;
    color:#fff;
    background:linear-gradient(135deg,#d8430a,#ef6c15);
    margin-bottom:12px;
  }
  .step h3{font-size:16.5px;margin:0 0 8px;}
  .step p{font-size:14.5px;color:#4b5568;}
  .cloud{background:rgba(255,255,255,.72);border:1px solid rgba(27,33,53,.09);border-radius:20px;padding:26px;}
  .cloud h3{font-size:17px;margin:0 0 6px;}
  .cloud p{font-size:14.5px;color:#4b5568;margin-bottom:16px;}
  .cloud-tags{display:flex;flex-wrap:wrap;gap:9px;}
  .cloud-tags span{
    font-size:13.5px;
    font-weight:600;
    color:#2c3550;
    background:#ffffff;
    border:1px solid rgba(27,33,53,.1);
    padding:6px 13px;
    border-radius:999px;
    transition:transform .25s ease,border-color .25s ease,color .25s ease;
  }
  .cloud-tags span:hover{transform:translateY(-2px);border-color:rgba(255,138,0,.55);color:#b83c00;}

  /* network */
  .net-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px;align-items:start;}
  .net-list{list-style:none;display:grid;gap:12px;margin-top:16px;}
  .net-list li{
    background:#fff;
    border:1px solid rgba(27,33,53,.09);
    border-radius:14px;
    padding:14px 16px;
    font-size:14.8px;
    color:#2c3550;
  }
  .timeline{list-style:none;position:relative;margin-top:16px;}
  .timeline li{position:relative;padding:0 0 20px 34px;}
  .timeline li:last-child{padding-bottom:0;}
  .timeline li::before{
    content:"";
    position:absolute;left:0;top:6px;
    width:14px;height:14px;border-radius:50%;
    background:linear-gradient(135deg,#ff8a00,#1a6bff);
    box-shadow:0 0 0 4px rgba(255,138,0,.15);
  }
  .timeline li::after{
    content:"";
    position:absolute;left:6px;top:24px;bottom:2px;width:2px;
    background:rgba(27,33,53,.1);
  }
  .timeline li:last-child::after{display:none;}
  .timeline h4{font-size:15.5px;margin:0 0 4px;}
  .timeline p{font-size:14.3px;color:#4b5568;}

  /* cases */
  .case-media{
    aspect-ratio:16/10;
    background:linear-gradient(135deg,#fff6ec,#eef5ff);
    border:1px solid rgba(27,33,53,.08);
    border-radius:14px;
    display:flex;align-items:center;justify-content:center;
    padding:12px;
    overflow:hidden;
    margin-bottom:16px;
  }
  .case-media img{
    max-width:100%;max-height:100%;width:auto;height:auto;
    object-fit:contain;display:block;border-radius:8px;
  }

  /* review */
  .review-top{display:grid;grid-template-columns:.72fr 1.28fr;gap:24px;align-items:stretch;margin-bottom:26px;}
  .score-card{
    background:linear-gradient(150deg,#fff4e6,#eef5ff);
    border:1px solid rgba(255,138,0,.35);
    border-radius:20px;
    padding:28px 24px;
    text-align:center;
    display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;
  }
  .score-num{font-size:52px;font-weight:800;color:#c94200;line-height:1.05;}
  .score-num span{font-size:19px;color:#8b6a52;font-weight:700;}
  .score-stars{font-size:20px;letter-spacing:4px;color:#ef6c15;}
  .score-text{font-size:14.5px;color:#4b5568;}
  .review-points{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;align-content:start;}
  .review-points div{
    background:#fff;
    border:1px solid rgba(27,33,53,.09);
    border-radius:14px;
    padding:13px 15px;
    font-size:14.5px;
    color:#2c3550;
    transition:transform .3s ease,border-color .3s ease;
  }
  .review-points div:hover{transform:translateY(-3px);border-color:rgba(255,138,0,.5);}
  .review-points strong{color:#b83c00;}

  /* tables */
  .table-wrap{
    background:#fff;
    border:1px solid rgba(27,33,53,.09);
    border-radius:18px;
    overflow-x:auto;
    box-shadow:0 20px 40px -36px rgba(27,33,53,.6);
  }
  table{width:100%;border-collapse:collapse;min-width:660px;}
  thead th{
    background:linear-gradient(135deg,rgba(255,138,0,.14),rgba(26,107,255,.12));
    color:#2c3550;
    font-size:14.5px;
    font-weight:800;
    text-align:left;
    padding:14px 18px;
    border-bottom:1px solid rgba(27,33,53,.1);
    white-space:nowrap;
  }
  tbody td{
    padding:13px 18px;
    font-size:14.6px;
    color:#3b4761;
    border-bottom:1px solid rgba(27,33,53,.07);
    vertical-align:top;
  }
  tbody tr:nth-child(even) td{background:#fffaf3;}
  tbody tr:last-child td{border-bottom:none;}
  tbody td:first-child{font-weight:700;color:#1b2135;}
  .mark{color:#b83c00;font-weight:700;}
  .mark-dim{color:#7a8496;}
  .table-note{font-size:13.6px;color:#697285;margin-top:14px;text-align:center;}

  /* comments */
  .comment{display:flex;flex-direction:column;gap:14px;}
  .comment-head{display:flex;align-items:center;gap:12px;}
  .comment-avatar{
    width:42px;height:42px;flex:0 0 auto;border-radius:14px;
    background:linear-gradient(135deg,rgba(255,138,0,.32),rgba(26,107,255,.32));
    border:1px solid rgba(255,138,0,.3);
  }
  .comment-name{font-size:15px;font-weight:800;color:#1b2135;}
  .comment-role{font-size:13px;color:#697285;}
  .comment p{font-size:14.6px;color:#3b4761;}

  /* join band */
  .join-band{
    background:linear-gradient(120deg,#182036,#243355 55%,#2f2a4f);
    border-radius:24px;
    padding:38px 34px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:26px;
    flex-wrap:wrap;
    box-shadow:0 30px 60px -40px rgba(15,23,41,.9);
  }
  .join-band h2{color:#ffffff;font-size:clamp(21px,2.8vw,28px);margin:0 0 10px;}
  .join-band p{color:#c9d4ea;font-size:15px;max-width:640px;}

  /* contact */
  .contact-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:26px;align-items:start;}
  .form-card{background:#fff;border:1px solid rgba(27,33,53,.09);border-radius:20px;padding:28px;box-shadow:0 24px 50px -40px rgba(27,33,53,.7);}
  .form-card h3{font-size:19px;margin:0 0 6px;}
  .form-card > p{font-size:14.5px;color:#4b5568;margin-bottom:20px;}
  .form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
  .field{display:flex;flex-direction:column;gap:7px;margin-bottom:16px;}
  .field label{font-size:14px;font-weight:700;color:#2c3550;}
  .field input,.field select,.field textarea{
    width:100%;
    font-family:inherit;
    font-size:15px;
    color:#1b2135;
    background:#fffdfa;
    border:1px solid rgba(27,33,53,.15);
    border-radius:12px;
    padding:12px 14px;
    transition:border-color .25s ease,box-shadow .25s ease,background .25s ease;
  }
  .field textarea{resize:vertical;min-height:104px;}
  .field input:focus,.field select:focus,.field textarea:focus{
    outline:none;
    background:#fff;
    border-color:rgba(239,108,21,.85);
    box-shadow:0 0 0 3px rgba(255,138,0,.16);
  }
  .form-tip{font-size:13px;color:#697285;margin-top:12px;}
  .contact-card{background:#fff;border:1px solid rgba(27,33,53,.09);border-radius:20px;padding:26px;box-shadow:0 24px 50px -40px rgba(27,33,53,.7);}
  .contact-card h3{font-size:18px;margin:0 0 16px;}
  .contact-list{list-style:none;display:grid;gap:12px;}
  .contact-list li{font-size:14.6px;color:#3b4761;line-height:1.7;}
  .contact-list span{display:block;font-size:13px;color:#8a92a3;font-weight:700;}
  .contact-list a{color:#b83c00;font-weight:700;}
  .qr-box{margin-top:20px;padding-top:20px;border-top:1px dashed rgba(27,33,53,.14);display:flex;align-items:center;gap:16px;}
  .qr-box img{width:120px;height:auto;border-radius:12px;border:1px solid rgba(27,33,53,.1);background:#fff;display:block;}
  .qr-box p{font-size:14px;color:#3b4761;}
  .qr-box strong{display:block;font-size:15px;color:#1b2135;}

  /* resources */
  .res-list{list-style:none;display:grid;gap:10px;margin-top:12px;}
  .res-list li a{
    display:block;
    font-size:14.6px;
    color:#2c3550;
    background:#fffdfa;
    border:1px solid rgba(27,33,53,.09);
    border-radius:12px;
    padding:11px 14px;
    transition:transform .25s ease,border-color .25s ease,color .25s ease;
  }
  .res-list li a:hover{transform:translateX(4px);border-color:rgba(255,138,0,.5);color:#b83c00;}
  .wiki-tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:14px;}
  .wiki-tags span{
    font-size:13.4px;
    color:#2c3550;
    background:rgba(255,138,0,.1);
    border:1px solid rgba(255,138,0,.22);
    border-radius:999px;
    padding:5px 12px;
  }

  /* faq */
  .faq-wrap{max-width:900px;margin:0 auto;}
  .faq-item{
    background:#fff;
    border:1px solid rgba(27,33,53,.1);
    border-radius:14px;
    margin-bottom:12px;
    overflow:hidden;
    transition:border-color .3s ease,box-shadow .3s ease;
  }
  .faq-item[open]{border-color:rgba(239,108,21,.5);box-shadow:0 18px 36px -30px rgba(27,33,53,.7);}
  .faq-item summary{
    list-style:none;
    cursor:pointer;
    position:relative;
    padding:16px 48px 16px 18px;
    font-size:15.6px;
    font-weight:700;
    color:#1b2135;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary::after{
    content:"";
    position:absolute;right:20px;top:50%;
    width:9px;height:9px;
    border-right:2px solid #d8430a;
    border-bottom:2px solid #d8430a;
    transform:translateY(-70%) rotate(45deg);
    transition:transform .3s ease;
  }
  .faq-item[open] summary::after{transform:translateY(-25%) rotate(-135deg);}
  .faq-body{padding:0 18px 18px;font-size:14.8px;color:#4b5568;}

  /* footer */
  .site-footer{
    background:#fffaf3;
    border-top:1px solid rgba(27,33,53,.1);
    padding:36px 0 26px;
    color:#2c3550;
  }
  .foot-top{display:grid;grid-template-columns:1fr 1.25fr;gap:28px;align-items:start;}
  .foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:12px;}
  .foot-brand .brand-mark{width:36px;height:36px;}
  .foot-brand strong{font-size:16px;color:#1b2135;}
  .foot-desc{font-size:14.2px;color:#4b5568;max-width:420px;}
  .foot-title{font-size:14px;font-weight:800;color:#1b2135;margin:0 0 12px;}
  .foot-links{display:flex;flex-wrap:wrap;gap:8px 12px;}
  .foot-links a{
    font-size:13.6px;
    color:#3b4761;
    background:#ffffff;
    border:1px solid rgba(27,33,53,.1);
    border-radius:999px;
    padding:5px 12px;
    transition:transform .25s ease,color .25s ease,border-color .25s ease;
  }
  .foot-links a:hover{transform:translateY(-2px);color:#b83c00;border-color:rgba(255,138,0,.5);}
  .foot-bottom{
    margin-top:26px;
    padding-top:16px;
    border-top:1px dashed rgba(27,33,53,.14);
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    justify-content:space-between;
    gap:8px;
    font-size:13.4px;
    color:#4b5568;
  }
  .foot-bottom a{color:#b83c00;font-weight:700;}

  /* float tools */
  .float-tools{position:fixed;right:18px;bottom:22px;z-index:60;display:flex;flex-direction:column;align-items:flex-end;gap:12px;}
  .kefu-panel{
    display:none;
    width:200px;
    background:#ffffff;
    border:1px solid rgba(27,33,53,.12);
    border-radius:16px;
    padding:16px;
    text-align:center;
    box-shadow:0 26px 48px -28px rgba(27,33,53,.7);
  }
  .kefu-panel.open{display:block;animation:fadeUp .32s ease both;}
  .kefu-panel img{width:100%;height:auto;border-radius:10px;display:block;margin-bottom:10px;}
  .kefu-panel strong{display:block;font-size:14px;color:#1b2135;margin-bottom:4px;}
  .kefu-panel span{font-size:13px;color:#4b5568;}
  .fab{
    width:50px;height:50px;
    border-radius:16px;
    border:1px solid rgba(27,33,53,.12);
    background:#ffffff;
    color:#2c3550;
    font-size:13.5px;
    font-weight:800;
    font-family:inherit;
    cursor:pointer;
    display:inline-flex;align-items:center;justify-content:center;
    box-shadow:0 16px 30px -18px rgba(27,33,53,.8);
    transition:transform .25s ease,background .25s ease,color .25s ease;
  }
  .fab:hover{transform:translateY(-3px);}
  .fab-main{background:linear-gradient(135deg,#d8430a,#ef6c15);color:#ffffff;border-color:transparent;}
  .fab-top{width:46px;height:46px;}
  .fab svg{width:18px;height:18px;display:block;}

  /* animation */
  @keyframes fadeUp{
    from{opacity:0;transform:translateY(18px);}
    to{opacity:1;transform:none;}
  }
  .reveal.in{animation:fadeUp .62s ease both;}
  .reveal:nth-child(2){animation-delay:.06s;}
  .reveal:nth-child(3){animation-delay:.12s;}
  .reveal:nth-child(4){animation-delay:.18s;}

  @media (prefers-reduced-motion: reduce){
    *{animation:none !important;transition:none !important;}
    html{scroll-behavior:auto;}
  }

  /* responsive */
  @media (max-width:1180px){
    .nav-toggle{display:inline-flex;}
    .nav-links{
      position:absolute;
      top:100%;left:0;right:0;
      display:none;
      flex-direction:column;
      align-items:stretch;
      gap:0;
      background:#fffdf9;
      border-bottom:1px solid rgba(27,33,53,.12);
      box-shadow:0 24px 36px -30px rgba(27,33,53,.8);
      padding:8px 20px 16px;
      max-height:70vh;
      overflow-y:auto;
    }
    .nav-links.open{display:flex;}
    .nav-links a{
      width:100%;
      padding:12px 6px;
      font-size:15px;
      border-bottom:1px dashed rgba(27,33,53,.1);
      border-radius:0;
    }
    .nav-links a:last-child{border-bottom:none;}
    .header-actions{margin-left:auto;}
  }
  @media (max-width:980px){
    .hero-inner{grid-template-columns:1fr;gap:30px;}
    .about-grid,.net-grid,.contact-grid,.review-top,.foot-top{grid-template-columns:1fr;}
    .grid-3,.grid-4{grid-template-columns:repeat(2,minmax(0,1fr));}
    .step-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
    .sec{padding:52px 0;}
  }
  @media (max-width:640px){
    .container{padding:0 16px;}
    .grid-2,.grid-3,.grid-4,.step-grid,.form-row,.review-points{grid-template-columns:1fr;}
    .hero{padding:36px 0 26px;}
    .hero-actions{flex-direction:column;align-items:stretch;}
    .hero-actions .btn{width:100%;}
    .join-band{padding:26px 20px;}
    .join-band .btn{width:100%;}
    .metric-num{font-size:22px;}
    .score-num{font-size:44px;}
    .foot-bottom{flex-direction:column;align-items:flex-start;}
    .float-tools{right:14px;bottom:16px;}
  }