:root{
    --bg:#f8fcff;
    --white:#ffffff;
    --ink:#102033;
    --muted:#66778c;
    --blue:#2477ff;
    --blue-soft:#eaf4ff;
    --cyan:#40c8ff;
    --mint:#dffaf3;
    --green:#13a87a;
    --lav:#f3efff;
    --line:#dceaf7;
    --card:#ffffff;
    --shadow:0 16px 42px rgba(36,119,255,.08);
    --radius:26px;
    --max:1180px;
  }

  *{
    box-sizing:border-box;
  }

  body{
    margin:0;
    font-family:Arial, Helvetica, sans-serif;
    color:var(--ink);
    background:
      radial-gradient(circle at 10% 0%,rgba(64,200,255,.14),transparent 30%),
      radial-gradient(circle at 90% 10%,rgba(36,119,255,.10),transparent 28%),
      linear-gradient(180deg,#ffffff 0%,#f7fbff 50%,#eef7ff 100%);
    line-height:1.7;
  }

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

  a{
    color:var(--blue);
    text-decoration:none;
    font-weight:800;
  }

  a:hover{
    text-decoration:underline;
  }

  .light-hifu{
    width:100%;
    overflow:hidden;
  }

  .lh-container{
    width:min(var(--max),calc(100% - 34px));
    margin:0 auto;
  }

  .lh-top{
    padding:14px 0;
    background:rgba(255,255,255,.88);
    border-bottom:1px solid var(--line);
    backdrop-filter:blur(10px);
  }

  .lh-top-inner{
    display:flex;
    justify-content:space-between;
    align-items:center;
    gap:18px;
    flex-wrap:wrap;
    font-size:14px;
    color:var(--muted);
  }

  .lh-brand{
    color:var(--ink);
    font-weight:900;
    letter-spacing:.2px;
  }

  .lh-brand span{
    color:var(--blue);
  }

  .lh-hero{
    padding:66px 0 40px;
  }

  .lh-hero-grid{
    display:grid;
    grid-template-columns:1.02fr .98fr;
    gap:38px;
    align-items:center;
  }

  .lh-label{
    display:inline-flex;
    align-items:center;
    gap:8px;
    padding:8px 14px;
    border-radius:999px;
    background:var(--blue-soft);
    color:#0c4fb6;
    border:1px solid #cfe5ff;
    font-size:13px;
    font-weight:900;
    text-transform:uppercase;
    letter-spacing:.6px;
    margin-bottom:16px;
  }

  .lh-label::before{
    content:"";
    width:8px;
    height:8px;
    border-radius:50%;
    background:var(--green);
    box-shadow:0 0 0 6px rgba(19,168,122,.12);
  }

  .lh-hero h1{
    margin:0 0 18px;
    font-size:clamp(36px,5.2vw,64px);
    line-height:1.04;
    letter-spacing:-1.4px;
    color:#081b30;
  }

  .lh-lead{
    color:var(--muted);
    font-size:18px;
    margin:0 0 24px;
    max-width:760px;
  }

  .lh-search-intent{
    display:flex;
    flex-wrap:wrap;
    gap:10px;
    margin:22px 0 28px;
  }

  .lh-search-intent span{
    background:#fff;
    border:1px solid var(--line);
    border-radius:999px;
    padding:9px 14px;
    color:#496176;
    font-size:13px;
    font-weight:800;
    box-shadow:0 8px 22px rgba(16,32,51,.04);
  }

  .lh-actions{
    display:flex;
    flex-wrap:wrap;
    gap:12px;
  }

  .lh-btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    min-height:48px;
    padding:13px 20px;
    border-radius:999px;
    font-weight:900;
    border:1px solid transparent;
    transition:.22s ease;
  }

  .lh-btn:hover{
    transform:translateY(-2px);
    text-decoration:none;
  }

  .lh-btn-primary{
    background:linear-gradient(135deg,var(--blue),var(--cyan));
    color:#fff;
    box-shadow:0 14px 28px rgba(36,119,255,.22);
  }

  .lh-btn-soft{
    background:#fff;
    color:#0c4fb6;
    border-color:#cfe5ff;
  }

  .lh-hero-visual{
    position:relative;
  }

  .lh-product-card{
    background:#fff;
    border:1px solid var(--line);
    border-radius:34px;
    padding:16px;
    box-shadow:var(--shadow);
  }

  .lh-image-frame{
    width:100%;
    aspect-ratio:4/3;
    background:linear-gradient(135deg,#f5fbff,#ffffff);
    border-radius:24px;
    overflow:hidden;
    display:flex;
    align-items:center;
    justify-content:center;
    padding:14px;
    border:1px solid #edf5fc;
  }

  .lh-image-frame img{
    width:100%;
    height:100%;
    object-fit:contain;
    object-position:center;
  }

  .lh-floating-note{
    position:absolute;
    left:-18px;
    bottom:28px;
    background:#fff;
    border:1px solid var(--line);
    border-radius:22px;
    padding:16px 18px;
    box-shadow:var(--shadow);
    width:min(260px,78%);
  }

  .lh-floating-note strong{
    display:block;
    color:#081b30;
    font-size:18px;
    margin-bottom:4px;
  }

  .lh-floating-note span{
    color:var(--muted);
    font-size:13px;
  }

  .lh-mini-grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:10px;
    margin-top:12px;
  }

  .lh-mini{
    background:#f8fcff;
    border:1px solid var(--line);
    border-radius:18px;
    text-align:center;
    padding:12px 8px;
  }

  .lh-mini strong{
    display:block;
    color:#081b30;
    font-size:17px;
    line-height:1.1;
  }

  .lh-mini span{
    color:var(--muted);
    font-size:12px;
  }

  .lh-nav-chips{
    padding:22px 0 10px;
  }

  .lh-nav-list{
    display:flex;
    flex-wrap:wrap;
    gap:10px;
    justify-content:center;
  }

  .lh-nav-list a{
    background:#fff;
    border:1px solid var(--line);
    border-radius:999px;
    padding:10px 15px;
    color:#496176;
    font-size:14px;
    box-shadow:0 8px 20px rgba(16,32,51,.04);
  }

  .lh-section{
    padding:38px 0;
  }

  .lh-section-title{
    max-width:850px;
    margin:0 auto 28px;
    text-align:center;
  }

  .lh-section-title .lh-kicker{
    color:var(--blue);
    font-size:13px;
    font-weight:900;
    text-transform:uppercase;
    letter-spacing:1px;
    margin-bottom:8px;
  }

  .lh-section-title h2{
    margin:0 0 12px;
    font-size:clamp(28px,3.6vw,44px);
    line-height:1.15;
    letter-spacing:-.6px;
    color:#081b30;
  }

  .lh-section-title p{
    margin:0;
    color:var(--muted);
    font-size:17px;
  }

  .lh-paper{
    background:#fff;
    border:1px solid var(--line);
    border-radius:34px;
    padding:clamp(24px,3vw,38px);
    box-shadow:var(--shadow);
  }

  .lh-paper p{
    color:var(--muted);
    margin:0 0 16px;
  }

  .lh-paper h3{
    color:#081b30;
    font-size:23px;
    margin:28px 0 10px;
  }

  .lh-two{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:24px;
    align-items:start;
  }

  .lh-three{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:18px;
  }

  .lh-feature{
    background:#fff;
    border:1px solid var(--line);
    border-radius:26px;
    padding:24px;
    box-shadow:0 12px 30px rgba(16,32,51,.05);
  }

  .lh-icon{
    width:48px;
    height:48px;
    border-radius:18px;
    background:linear-gradient(135deg,var(--blue-soft),#ffffff);
    border:1px solid #cfe5ff;
    color:var(--blue);
    display:flex;
    align-items:center;
    justify-content:center;
    font-weight:900;
    margin-bottom:14px;
  }

  .lh-feature strong{
    display:block;
    color:#081b30;
    font-size:19px;
    margin-bottom:8px;
  }

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

  .lh-soft-card{
    background:linear-gradient(135deg,#f4fbff,#ffffff);
    border:1px solid var(--line);
    border-radius:30px;
    padding:28px;
  }

  .lh-soft-card h3{
    margin:0 0 12px;
    font-size:26px;
    color:#081b30;
  }

  .lh-soft-card p{
    color:var(--muted);
    margin:0 0 14px;
  }

  .lh-checks{
    display:grid;
    gap:12px;
    margin:18px 0 0;
  }

  .lh-check{
    position:relative;
    padding:14px 16px 14px 44px;
    border-radius:18px;
    border:1px solid var(--line);
    background:#fff;
    color:#53697d;
  }

  .lh-check::before{
    content:"✓";
    position:absolute;
    left:16px;
    top:13px;
    color:var(--green);
    font-weight:900;
  }

  .lh-comparison{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:22px;
  }

  .lh-compare-box{
    background:#fff;
    border:1px solid var(--line);
    border-radius:30px;
    padding:28px;
    box-shadow:var(--shadow);
  }

  .lh-compare-box.highlight{
    background:linear-gradient(135deg,#ecf8ff,#ffffff);
    border-color:#bfe5ff;
  }

  .lh-compare-box h3{
    margin:0 0 16px;
    font-size:28px;
    color:#081b30;
  }

  .lh-compare-list{
    list-style:none;
    padding:0;
    margin:0;
    display:grid;
    gap:10px;
  }

  .lh-compare-list li{
    position:relative;
    padding:13px 14px 13px 40px;
    border:1px solid var(--line);
    border-radius:17px;
    background:#fff;
    color:#53697d;
  }

  .lh-compare-list li::before{
    content:"•";
    position:absolute;
    left:17px;
    top:8px;
    color:var(--blue);
    font-size:28px;
    line-height:1;
  }

  .lh-table-wrap{
    overflow-x:auto;
    border:1px solid var(--line);
    border-radius:28px;
    margin-top:24px;
    box-shadow:var(--shadow);
    -webkit-overflow-scrolling:touch;
  }

  .lh-table{
    width:100%;
    min-width:760px;
    border-collapse:collapse;
    background:#fff;
  }

  .lh-table th,
  .lh-table td{
    padding:16px 18px;
    border-bottom:1px solid var(--line);
    text-align:left;
    vertical-align:top;
  }

  .lh-table th{
    background:#eef7ff;
    color:#0c4fb6;
    font-size:14px;
  }

  .lh-table td{
    color:#5d7286;
    font-size:15px;
  }

  .lh-table td:first-child{
    color:#081b30;
    font-weight:900;
  }

  .lh-table tr:last-child td{
    border-bottom:0;
  }

  .lh-image-row{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:20px;
    margin-top:26px;
  }

  .lh-image-card{
    background:#fff;
    border:1px solid var(--line);
    border-radius:30px;
    padding:14px;
    box-shadow:0 12px 30px rgba(16,32,51,.05);
  }

  .lh-image-caption{
    padding:12px 6px 4px;
  }

  .lh-image-caption strong{
    color:#081b30;
    display:block;
    font-size:17px;
    margin-bottom:4px;
  }

  .lh-image-caption span{
    color:var(--muted);
    font-size:14px;
  }

  .lh-note{
    background:#fff8e9;
    border:1px solid #f5dba5;
    color:#7d5618;
    border-radius:22px;
    padding:18px 20px;
    margin:24px 0;
    font-size:15px;
  }

  .lh-product-cta{
    background:linear-gradient(135deg,#f0f8ff,#ffffff);
    border:1px solid #cfe5ff;
    border-radius:34px;
    padding:clamp(26px,4vw,42px);
    box-shadow:var(--shadow);
    text-align:center;
  }

  .lh-product-cta h2{
    margin:0 0 12px;
    font-size:clamp(28px,3.5vw,44px);
    color:#081b30;
    line-height:1.15;
  }

  .lh-product-cta p{
    color:var(--muted);
    max-width:780px;
    margin:0 auto 22px;
  }

  .lh-faq{
    display:grid;
    gap:14px;
  }

  .lh-faq details{
    background:#fff;
    border:1px solid var(--line);
    border-radius:22px;
    padding:18px 20px;
    box-shadow:0 10px 28px rgba(16,32,51,.04);
  }

  .lh-faq summary{
    cursor:pointer;
    list-style:none;
    color:#081b30;
    font-weight:900;
    font-size:17px;
  }

  .lh-faq summary::-webkit-details-marker{
    display:none;
  }

  .lh-faq p{
    color:var(--muted);
    margin:12px 0 0;
  }

  .lh-final{
    background:#fff;
    border:1px solid var(--line);
    border-radius:34px;
    padding:clamp(26px,4vw,42px);
    box-shadow:var(--shadow);
    display:grid;
    grid-template-columns:1fr auto;
    gap:24px;
    align-items:center;
  }

  .lh-final h2{
    margin:0 0 12px;
    font-size:clamp(28px,3.4vw,42px);
    color:#081b30;
    line-height:1.16;
  }

  .lh-final p{
    color:var(--muted);
    margin:0;
  }

  @media(max-width:980px){
    .lh-hero-grid,
    .lh-two,
    .lh-comparison,
    .lh-image-row,
    .lh-final{
      grid-template-columns:1fr;
    }

    .lh-three{
      grid-template-columns:1fr;
    }

    .lh-floating-note{
      position:relative;
      left:auto;
      bottom:auto;
      width:100%;
      margin-top:12px;
    }
  }

  @media(max-width:680px){
    .lh-hero{
      padding:46px 0 28px;
    }

    .lh-product-card,
    .lh-paper,
    .lh-product-cta,
    .lh-final{
      border-radius:24px;
    }

    .lh-mini-grid{
      grid-template-columns:1fr;
    }

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

    .lh-btn{
      width:100%;
    }
  }