:root {
      --ink:#10263a;
      --soft:#516b7c;
      --muted:#718899;
      --bg:#f6fafb;
      --card:#ffffff;
      --line:#d8e6ea;
      --blue:#126ca8;
      --blue-dark:#0d4d78;
      --teal:#12806f;
      --coral:#d95f43;
      --gold:#b68117;
      --shadow:0 18px 48px rgba(16,38,58,.10);
      --radius:10px;
      --max:1120px;
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:Inter,Arial,Helvetica,sans-serif;
      color:var(--ink);
      background:linear-gradient(180deg,#fbfdfe 0%,#f1f8fa 48%,#f7faf8 100%);
      line-height:1.7;
    }
    img{max-width:100%;display:block;height:auto}
    a{color:inherit;text-decoration:none}
    .container{width:min(var(--max),calc(100% - 32px));margin:0 auto}
    .section{padding:68px 0}
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:10px;
      margin:0 0 14px;
      color:var(--blue-dark);
      font-size:12px;
      font-weight:800;
      letter-spacing:.08em;
      text-transform:uppercase;
    }
    .eyebrow:before{content:"";width:28px;height:2px;background:var(--coral)}
    h1,h2,h3{line-height:1.08;letter-spacing:0}
    h1{font-size:clamp(38px,5.4vw,66px);margin:0}
    h2{font-size:clamp(28px,4vw,44px);margin:0 0 16px}
    h3{font-size:22px;margin:0 0 10px}
    p{margin:0;color:var(--soft)}
    .lead{font-size:clamp(18px,2vw,21px);max-width:820px}
    .topbar{
      position:sticky;
      top:0;
      z-index:20;
      background:rgba(251,253,254,.92);
      backdrop-filter:blur(16px);
      border-bottom:1px solid rgba(171,198,207,.65);
    }
    .topbar-inner{
      min-height:70px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      font-weight:850;
    }
    .brand-mark{
      width:38px;
      height:38px;
      border-radius:var(--radius);
      background:linear-gradient(135deg,var(--blue),var(--teal),#c7a03d);
    }
    .nav{
      display:flex;
      align-items:center;
      gap:22px;
      color:var(--soft);
      font-size:14px;
      font-weight:700;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      min-height:50px;
      padding:0 20px;
      border-radius:var(--radius);
      font-weight:800;
      border:1px solid transparent;
    }
    .btn-primary{background:var(--coral);color:#fff;box-shadow:0 16px 34px rgba(217,95,67,.24)}
    .btn-secondary{background:#fff;color:var(--blue-dark);border-color:#abc6cf}
    .btn-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}

    .hero{
      padding:38px 0 70px;
      border-bottom:1px solid var(--line);
    }
    .breadcrumbs{
      padding:18px 0 0;
      color:var(--muted);
      font-size:14px;
    }
    .breadcrumbs a{color:var(--blue-dark);font-weight:700}
    .hero-grid{
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:34px;
      align-items:center;
      margin-top:28px;
    }
    .hero h1 span{color:var(--blue-dark)}
    .hero-card{
      background:#fff;
      border:1px solid var(--line);
      border-radius:var(--radius);
      padding:24px;
      box-shadow:var(--shadow);
    }
    .price-box{
      display:grid;
      gap:12px;
      margin-top:20px;
    }
    .price-row{
      display:flex;
      justify-content:space-between;
      gap:16px;
      padding:14px;
      border:1px solid var(--line);
      border-radius:var(--radius);
      background:#f8fbfc;
      font-size:15px;
    }
    .price-row strong{color:var(--ink)}
    .price-row span{color:var(--blue-dark);font-weight:850;text-align:right}
    .note{
      margin-top:14px;
      color:var(--muted);
      font-size:14px;
    }

    .ai-summary{
      background:#fff;
      border:1px solid #ccdfe4;
      border-radius:var(--radius);
      padding:24px;
      box-shadow:0 14px 30px rgba(16,38,58,.07);
    }
    .ai-summary h2{font-size:26px}
    .grid-2,.grid-3{display:grid;gap:18px}
    .grid-2{grid-template-columns:repeat(2,1fr)}
    .grid-3{grid-template-columns:repeat(3,1fr)}
    .card{
      background:var(--card);
      border:1px solid var(--line);
      border-radius:var(--radius);
      padding:22px;
      box-shadow:0 12px 34px rgba(16,38,58,.07);
    }
    .icon{
      width:42px;
      height:42px;
      display:grid;
      place-items:center;
      margin-bottom:16px;
      border-radius:var(--radius);
      background:#edf7f8;
      color:var(--blue-dark);
      font-weight:900;
    }
    .band{
      background:rgba(237,247,248,.72);
      border-top:1px solid var(--line);
      border-bottom:1px solid var(--line);
    }
    .content{
      display:grid;
      grid-template-columns:minmax(0,1fr) 310px;
      gap:32px;
      align-items:start;
    }
    .article{
      display:grid;
      gap:34px;
    }
    .article-block{
      background:#fff;
      border:1px solid var(--line);
      border-radius:var(--radius);
      padding:28px;
      box-shadow:0 12px 34px rgba(16,38,58,.06);
    }
    .article-block ul{
      margin:14px 0 0;
      padding-left:20px;
      color:var(--soft);
    }
    .article-block li + li{margin-top:8px}
    .toc{
      position:sticky;
      top:90px;
      background:#fff;
      border:1px solid var(--line);
      border-radius:var(--radius);
      padding:20px;
      box-shadow:0 10px 28px rgba(16,38,58,.06);
    }
    .toc strong{display:block;margin-bottom:12px}
    .toc a{
      display:block;
      padding:8px 0;
      color:var(--soft);
      font-size:14px;
      border-top:1px solid #eef3f5;
    }
    .toc a:hover{color:var(--blue-dark)}
    .table-wrap{
      overflow:auto;
      border:1px solid var(--line);
      border-radius:var(--radius);
      background:#fff;
      margin-top:20px;
    }
    table{width:100%;min-width:760px;border-collapse:collapse}
    th,td{
      padding:16px 18px;
      text-align:left;
      vertical-align:top;
      border-bottom:1px solid #e8f0f2;
    }
    th{
      background:#edf7f8;
      color:var(--blue-dark);
      font-size:13px;
      text-transform:uppercase;
      letter-spacing:.06em;
    }
    td{color:var(--soft)}
    .highlight{
      border-left:4px solid var(--coral);
      background:#fff7f4;
      padding:18px;
      border-radius:var(--radius);
      color:var(--soft);
    }
    .product-cta{
      display:grid;
      grid-template-columns:1fr 240px;
      gap:22px;
      align-items:center;
      padding:28px;
      border-radius:var(--radius);
      background:linear-gradient(135deg,#10263a,#0d4d78,#12806f);
      color:#fff;
      box-shadow:var(--shadow);
    }
    .product-cta p{color:rgba(255,255,255,.86)}
    .product-cta .btn{background:#fff;color:var(--blue-dark)}
    .faq-list{display:grid;gap:12px;margin-top:24px}
    details{
      background:#fff;
      border:1px solid var(--line);
      border-radius:var(--radius);
      box-shadow:0 10px 28px rgba(16,38,58,.06);
      overflow:hidden;
    }
    summary{
      cursor:pointer;
      list-style:none;
      padding:20px 56px 20px 20px;
      font-size:18px;
      font-weight:850;
      position:relative;
    }
    summary::-webkit-details-marker{display:none}
    summary:after{
      content:"+";
      position:absolute;
      right:18px;
      top:50%;
      transform:translateY(-50%);
      width:28px;
      height:28px;
      display:grid;
      place-items:center;
      background:var(--blue-dark);
      color:#fff;
      border-radius:var(--radius);
    }
    details[open] summary:after{content:"-"}
    details div{padding:0 20px 20px;color:var(--soft)}
    .footer{
      padding:34px 0 54px;
      color:var(--muted);
      font-size:14px;
    }
    .footer-inner{
      border-top:1px solid var(--line);
      padding-top:24px;
    }

    @media(max-width:1000px){
      .hero-grid,.content,.product-cta{grid-template-columns:1fr}
      .grid-3{grid-template-columns:1fr}
      .toc{position:static}
    }
    @media(max-width:760px){
      .container{width:calc(100% - 24px)}
      .section{padding:52px 0}
      .nav{display:none}
      .hero{padding:26px 0 52px}
      .grid-2{grid-template-columns:1fr}
      .btn-row{flex-direction:column}
      .btn{width:100%;white-space:normal}
      .topbar .btn{min-height:42px;padding:0 12px;font-size:13px}
    }