:root{
    --accent:#2563eb;      /* blue */
    --accent-soft:#eaf1ff; /* very light blue */
    --bg:#ffffff;
    --text:#111111;
    --muted:#666666;
    --line:#e9e9e9;
    --hover:#f5f5f5;
    --focus:#111111;
  }
  
  *{ box-sizing:border-box; }
  html,body{ height:100%; }
  
  body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
    line-height:1.25;
  }
  
  a{ color:inherit; text-decoration:none; }
  a:focus-visible, button:focus-visible, input:focus-visible{
    outline:2px solid var(--focus);
    outline-offset:2px;
  }
  
  .topbar{
    position:sticky;
    top:0;
    background:rgba(255,255,255,.92);
    backdrop-filter:saturate(180%) blur(10px);
    border-bottom:1px solid var(--line);
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding:18px 28px;
    z-index:10;
  }
  .topbar-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:14px;
  }
  
  .topbar-accent{
    height:3px;
    background: linear-gradient(90deg, var(--accent), #22c55e, #f97316);
    opacity: .9;
  }
  
  .menu{
    display:flex;
    gap:8px;
    flex-wrap:wrap;
    align-items:center;
    justify-content:center;
  }
  
  .tab{
    height:34px;
    padding:0 12px;
    border-radius:999px;
    border:1px solid var(--line);
    background:#fff;
    color:#111;
    font-size:13px;
    font-weight:600;
    cursor:pointer;
  }
  
  .tab:hover{ background: var(--hover); }
  
  .tab.is-active{
    border-color: rgba(37, 99, 235, .35);
    background: var(--accent-soft);
    color: #0f172a;
  }
  
  .item{
    cursor:pointer;
    align-items: center;
  }
  
  .item:focus-within{
    outline:2px solid rgba(37, 99, 235, .35);
    outline-offset:-2px;
  }
  
  .item-right{
    display:flex;
    align-items:center;
    gap:10px;
    flex-shrink:0;
  }
  
  .icon-btn:hover{ background: var(--hover); }
  
  .badge{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:12px;
    color: var(--muted);
  }
  
  .container{
    max-width:980px;
    margin:0 auto;
    padding:0 28px 64px;
  }
  
  .hero{
    padding:92px 0 34px;
  }
  
  .hero-inner{
    display:flex;
    flex-direction:column;
    gap:10px;
  }
  
  .hero-title{
    margin:0;
    font-size:72px;
    letter-spacing:-0.05em;
    font-weight:700;
  }
  
  .hero-subtitle{
    margin:0;
    font-size:20px;
    color:var(--muted);
  }
  
  .hero-cta{
    margin-top:18px;
    display:flex;
    align-items:center;
    gap:14px;
    flex-wrap:wrap;
  }
  
  .hero-meta{
    font-size:12px;
    color:var(--muted);
  }
  
  .section{
    padding:28px 0;
  }
  
  .section-head{
    display:flex;
    align-items:baseline;
    justify-content:space-between;
    gap:16px;
    border-top:1px solid var(--line);
    padding-top:18px;
  }
  
  .section-title{
    margin:0;
    font-size:18px;
    font-weight:700;
    letter-spacing:-0.01em;
  }
  
  .section-hint{
    margin:0;
    font-size:13px;
    color:var(--muted);
  }
  
  .list{
    margin-top:18px;
    border:1px solid var(--line);
    border-radius:16px;
    overflow:hidden;
  }
  
  .item{
    display:flex;
    gap:18px;
    justify-content:space-between;
    padding:18px 18px;
    border-top:1px solid var(--line);
  }
  
  .item:first-child{ border-top:none; }
  
  .item:hover{
    background:var(--hover);
    transition: 120ms ease;
  }
  
  .item-left{ min-width:0; }
  
  .big{
    font-size:58px;
    font-weight:700;
    letter-spacing:-0.05em;
    margin:0;
  }
  
  .desc{
    margin:6px 0 0;
    color:var(--muted);
    font-size:14px;
    white-space:nowrap;
    overflow:hidden;
    text-overflow:ellipsis;
    max-width:680px;
  }
  
  .item-right{
    display:flex;
    align-items:flex-end;
    gap:10px;
    flex-shrink:0;
  }
  
  .pill{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    height:40px;
    font-size:13px;
    color:var(--muted);
    border:1px solid var(--line);
    padding:0 12px;
    border-radius:999px;
  }
  
  .icon-btn{
    height:40px;
    padding:0 12px;
    border-radius:10px;
    border:1px solid var(--line);
    background:#fff;
    cursor:pointer;
    font-weight:600;
    font-size:13px;
    white-space:nowrap;
  }
  
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    height:40px;
    padding:0 14px;
    border-radius:10px;
    font-weight:600;
    font-size:14px;
    border:1px solid transparent;
    cursor:pointer;
    user-select:none;
  }
  
  .btn-solid{
    background: var(--accent);
    color:#fff;
  }
  
  .btn-solid:hover{ opacity:.92; }
  
  .btn-outline{
    background:transparent;
    color:#111;
    border-color:var(--line);
  }
  
  .btn-outline:hover{
    background:var(--hover);
  }
  
  .form{
    margin-top:18px;
    display:grid;
    gap:14px;
    max-width:560px;
  }
  
  .field{
    display:grid;
    gap:6px;
  }
  
  .label{
    font-size:12px;
    color:var(--muted);
  }
  
  .hint{
    margin:6px 0 0;
    font-size:12px;
    color:var(--muted);
  }
  
  .input{
    height:42px;
    border:1px solid var(--line);
    border-radius:10px;
    padding:0 12px;
    font-size:14px;
    background:#fff;
    color:#111;
  }
  
  .input:focus{
    border-color:#111;
  }
  
  .grid-2{
    display:grid;
    gap:12px;
    grid-template-columns: 1fr 1fr;
  }
  
  .radio-row{
    display:flex;
    gap:14px;
    flex-wrap:wrap;
  }
  
  .radio{
    display:flex;
    align-items:center;
    gap:8px;
    padding:10px 12px;
    border:1px solid var(--line);
    border-radius:12px;
  }
  
  .radio input{ accent-color:#111; }
  
  .tiny{
    font-size:12px;
    color:var(--muted);
    margin:0;
  }
  
  .footer{
    border-top:1px solid var(--line);
    padding-top:18px;
    margin-top:18px;
  }
  
  @media (max-width: 720px){
    .topbar{ padding:16px 16px; }
    .container{ padding:0 16px 52px; }
    .hero{ padding:64px 0 24px; }
    .hero-title{ font-size:46px; }
    .big{ font-size:40px; }
    .desc{ max-width:320px; }
    .grid-2{ grid-template-columns: 1fr; }
  }

  .brand{
    display:flex;
    align-items:center;
    gap:10px;
    font-weight:700;
    letter-spacing:-0.02em;
    font-size:18px;
  }
  
  .mark{
    width:10px;
    height:10px;
    border-radius:999px;
    background: var(--accent);
    box-shadow: 0 0 0 6px var(--accent-soft);
  }