:root{
      --bg:#f5faff;
      --panel:#ffffff;
      --soft:#edf6ff;
      --soft-2:#e7f2ff;
      --line:#dbe8f5;
      --text:#10233d;
      --muted:#58708d;
      --primary:#1d6fe8;
      --primary-2:#5aa8ff;
      --accent:#0ea5e9;
      --dark:#0f2747;
      --shadow:0 18px 45px rgba(16,35,61,.08);
      --radius:22px;
      --radius-sm:16px;
      --max:1180px;
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:'Inter',sans-serif;
      background:linear-gradient(180deg,#f7fbff 0%,#eef6ff 100%);
      color:var(--text);
      line-height:1.72;
    }

    img{
      max-width:100%;
      display:block;
      border:0;
    }

    a{
      color:var(--primary);
      text-decoration:none;
    }

    a:hover{
      text-decoration:underline;
    }

    .container{
      width:min(var(--max), calc(100% - 32px));
      margin:0 auto;
    }

    .topbar{
      padding:14px 0;
      border-bottom:1px solid rgba(219,232,245,.7);
      background:rgba(255,255,255,.72);
      backdrop-filter:blur(10px);
      position:sticky;
      top:0;
      z-index:100;
    }

    .topbar-inner{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
    }

    .brand{
      display:flex;
      align-items:center;
      gap:10px;
      font-weight:800;
      color:var(--dark);
      letter-spacing:.2px;
    }

    .brand-badge{
      width:38px;
      height:38px;
      border-radius:12px;
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
      box-shadow:var(--shadow);
    }

    .nav-cta{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      padding:11px 18px;
      border-radius:999px;
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
      color:#fff;
      font-weight:700;
      box-shadow:0 12px 26px rgba(29,111,232,.22);
    }

    .hero{
      padding:48px 0 26px;
    }

    .hero-grid{
      display:grid;
      grid-template-columns:1.15fr .85fr;
      gap:28px;
      align-items:stretch;
    }

    .hero-card,
    .hero-image,
    .card,
    .toc,
    .faq-item,
    .author-box,
    .cta-box{
      background:var(--panel);
      border:1px solid var(--line);
      border-radius:var(--radius);
      box-shadow:var(--shadow);
    }

    .hero-card{
      padding:34px;
      position:relative;
      overflow:hidden;
    }

    .hero-card::before{
      content:"";
      position:absolute;
      right:-60px;
      top:-60px;
      width:220px;
      height:220px;
      border-radius:50%;
      background:radial-gradient(circle, rgba(90,168,255,.18) 0%, rgba(90,168,255,0) 72%);
      pointer-events:none;
    }

    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 14px;
      border-radius:999px;
      background:var(--soft);
      color:var(--primary);
      font-size:13px;
      font-weight:700;
      text-transform:uppercase;
      letter-spacing:.08em;
      border:1px solid #d7e7fb;
    }

    h1,h2,h3,h4{
      margin:0 0 14px;
      color:var(--dark);
      line-height:1.2;
    }

    h1{
      font-family:'Playfair Display',serif;
      font-size:clamp(34px,4vw,54px);
      margin-top:18px;
      max-width:850px;
    }

    .hero-desc{
      font-size:17px;
      color:var(--muted);
      max-width:760px;
      margin:0 0 22px;
    }

    .meta{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin:18px 0 0;
      padding:0;
      list-style:none;
    }

    .meta li{
      padding:10px 14px;
      border-radius:999px;
      background:#f8fbff;
      border:1px solid var(--line);
      color:var(--muted);
      font-size:14px;
      font-weight:600;
    }

    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:24px;
    }

    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      padding:13px 20px;
      border-radius:999px;
      font-weight:700;
      transition:.2s ease;
    }

    .btn-primary{
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
      color:#fff;
      box-shadow:0 12px 26px rgba(29,111,232,.22);
    }

    .btn-secondary{
      background:#fff;
      color:var(--primary);
      border:1px solid var(--line);
    }

    /* fixed desktop image distortion */
    .hero-image{
      overflow:hidden;
      display:flex;
      flex-direction:column;
      align-self:start;
    }

    .hero-image figure{
      margin:0;
      width:100%;
      background:#f7fbff;
    }

    .hero-image .media-box{
      width:100%;
      aspect-ratio:4 / 3;
      min-height:0;
      padding:16px;
      display:flex;
      align-items:center;
      justify-content:center;
      background:linear-gradient(180deg,#f8fbff 0%,#eef6ff 100%);
    }

    .hero-image img{
      width:100%;
      height:100%;
      object-fit:contain;
      object-position:center;
      aspect-ratio:4 / 3;
      min-height:0;
      max-height:none;
      border-radius:16px;
      background:#fff;
    }

    .caption{
      padding:12px 18px;
      font-size:13px;
      color:var(--muted);
      border-top:1px solid var(--line);
      background:#fbfdff;
    }

    .main{
      padding:10px 0 70px;
    }

    .content-grid{
      display:grid;
      grid-template-columns:minmax(0, 1fr) 320px;
      gap:28px;
      align-items:start;
    }

    .article{
      min-width:0;
    }

    .card{
      padding:30px;
      margin-bottom:24px;
    }

    .article h2{
      font-size:32px;
      margin-top:0;
      margin-bottom:16px;
    }

    .article h3{
      font-size:24px;
      margin-top:28px;
    }

    .article p{
      margin:0 0 16px;
      color:#223a57;
      font-size:16.5px;
    }

    .article ul,
    .article ol{
      margin:0 0 18px 0;
      padding-left:20px;
      color:#223a57;
    }

    .article li{
      margin-bottom:10px;
    }

    .article strong{
      color:var(--dark);
    }

    .highlight{
      background:linear-gradient(180deg, rgba(90,168,255,.12), rgba(90,168,255,.05));
      border:1px solid #dbe9fb;
      border-radius:18px;
      padding:20px;
      margin:22px 0;
    }

    .grid-2{
      display:grid;
      grid-template-columns:repeat(2,minmax(0,1fr));
      gap:16px;
      margin:18px 0;
    }

    .mini-card{
      background:#f9fcff;
      border:1px solid var(--line);
      border-radius:18px;
      padding:20px;
    }

    .mini-card h4{
      font-size:18px;
      margin-bottom:10px;
    }

    .mini-card p{
      margin:0;
      font-size:15px;
      color:var(--muted);
    }

    .table-wrap{
      overflow:auto;
      border:1px solid var(--line);
      border-radius:18px;
      background:#fff;
      margin:20px 0;
    }

    table{
      width:100%;
      border-collapse:collapse;
      min-width:640px;
    }

    th,td{
      text-align:left;
      padding:16px 18px;
      border-bottom:1px solid var(--line);
      font-size:15px;
    }

    th{
      background:#f3f8ff;
      color:var(--dark);
      font-size:14px;
      letter-spacing:.02em;
    }

    tr:last-child td{
      border-bottom:none;
    }

    blockquote{
      margin:20px 0;
      padding:18px 20px;
      border-left:4px solid var(--primary);
      background:#f5faff;
      border-radius:14px;
      color:#274262;
      font-weight:500;
    }

    .sidebar{
      position:sticky;
      top:92px;
    }

    .toc{
      padding:22px;
      margin-bottom:20px;
    }

    .toc h3{
      font-size:18px;
      margin-bottom:12px;
    }

    .toc ul{
      list-style:none;
      padding:0;
      margin:0;
    }

    .toc li{
      margin-bottom:10px;
    }

    .toc a{
      display:block;
      padding:10px 12px;
      border-radius:12px;
      color:#24405f;
      background:#fbfdff;
      border:1px solid transparent;
      font-size:14px;
      font-weight:600;
    }

    .toc a:hover{
      border-color:var(--line);
      background:#f3f9ff;
      text-decoration:none;
    }

    .cta-box{
      padding:24px;
      background:linear-gradient(180deg,#ffffff 0%, #f2f8ff 100%);
    }

    .cta-box h3{
      font-size:22px;
      margin-bottom:12px;
    }

    .cta-box p{
      margin:0 0 16px;
      color:var(--muted);
      font-size:15px;
    }

    .faq-list{
      display:grid;
      gap:16px;
    }

    .faq-item{
      padding:22px;
    }

    .faq-item h3{
      font-size:20px;
      margin-bottom:10px;
    }

    .author-box{
      padding:24px;
      display:flex;
      gap:16px;
      align-items:flex-start;
    }

    .author-avatar{
      width:64px;
      height:64px;
      border-radius:50%;
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
      flex:0 0 64px;
    }

    .footer{
      padding:30px 0 50px;
      color:var(--muted);
      text-align:center;
      font-size:14px;
    }

    .kpi-row{
      display:grid;
      grid-template-columns:repeat(3, minmax(0,1fr));
      gap:16px;
      margin-top:20px;
    }

    .kpi{
      padding:20px;
      border-radius:18px;
      background:#f9fcff;
      border:1px solid var(--line);
    }

    .kpi strong{
      display:block;
      font-size:28px;
      color:var(--dark);
      margin-bottom:6px;
    }

    .kpi span{
      font-size:14px;
      color:var(--muted);
      font-weight:600;
    }

    @media (max-width: 1080px){
      .hero-grid,
      .content-grid{
        grid-template-columns:1fr;
      }

      .sidebar{
        position:static;
      }

      .hero-image{
        align-self:stretch;
      }
    }

    @media (max-width: 768px){
      .container{
        width:min(100% - 20px, var(--max));
      }

      .hero{
        padding-top:28px;
      }

      .hero-card,
      .card,
      .toc,
      .faq-item,
      .cta-box,
      .author-box{
        padding:22px;
        border-radius:18px;
      }

      .grid-2,
      .kpi-row{
        grid-template-columns:1fr;
      }

      .topbar-inner{
        align-items:flex-start;
        flex-direction:column;
      }

      .hero-image .media-box{
        padding:12px;
      }

      .hero-image img{
        aspect-ratio:auto;
        height:auto;
      }

      .article h2{
        font-size:27px;
      }

      .article h3{
        font-size:22px;
      }

      .hero-desc,
      .article p,
      .article li{
        font-size:15.5px;
      }

      .meta li{
        font-size:13px;
      }

      .btn,
      .nav-cta{
        width:100%;
      }

      .hero-actions{
        flex-direction:column;
      }
    }