:root{
    --bg:#F5F7FA; --bg-card:#FFFFFF; --bg-tint:#E8F0FB;
    --ink:#12233D; --ink-soft:#4A5A72; --primary:#0967C3;
    --primary-light:#4285F5; --line:#D7E1EE;
  }
  *{box-sizing:border-box; margin:0; padding:0;}
  body{background:var(--bg); color:var(--ink); font-family:'Inter', sans-serif; -webkit-font-smoothing:antialiased;}
  h1,h2{font-family:'Fraunces', serif; font-weight:600; letter-spacing:-0.01em;}
  a{color:var(--primary);}
  header{
    display:flex; align-items:center; justify-content:space-between;
    padding:16px 32px; border-bottom:1px solid var(--line); position:sticky; top:0; background:var(--bg); z-index:10;
  }
  .brand{display:flex; align-items:center; gap:10px; text-decoration:none;}
  .brand-mark{
    width:36px; height:36px; border-radius:50%; background:var(--primary);
    display:flex; align-items:center; justify-content:center; color:#fff;
    font-family:'Fraunces', serif; font-weight:600; font-size:0.9rem; overflow:hidden; flex-shrink:0;
  }
  .brand-mark img{width:100%; height:100%; object-fit:cover;}
  .brand-name{font-family:'Fraunces', serif; font-weight:600; font-size:0.92rem; color:var(--ink);}
  .back-link{font-family:'IBM Plex Mono', monospace; font-size:0.78rem; text-decoration:none;}
  main{max-width:760px; margin:0 auto; padding:48px 24px 80px;}
  .eyebrow{
    font-family:'IBM Plex Mono', monospace; font-size:0.68rem; letter-spacing:0.1em;
    text-transform:uppercase; color:var(--primary); margin-bottom:10px; display:block;
  }
  h1{font-size:clamp(1.5rem, 3vw, 2.1rem); margin-bottom:8px;}
  .updated{font-size:0.82rem; color:var(--ink-soft); margin-bottom:30px;}
  .notice{
    background:var(--bg-tint); border:1px solid var(--line); border-radius:10px;
    padding:14px 18px; font-size:0.86rem; color:var(--ink-soft); margin-bottom:34px; line-height:1.5;
  }
  section{margin-bottom:28px;}
  h2{font-size:1.15rem; margin-bottom:10px; color:var(--ink);}
  p, li{font-size:0.95rem; line-height:1.65; color:var(--ink-soft); margin-bottom:10px;}
  ul{padding-left:20px; margin-bottom:10px;}
  strong{color:var(--ink);}
  footer{
    border-top:1px solid var(--line); padding-top:20px; margin-top:20px;
    display:flex; flex-direction:column; align-items:center; gap:8px; text-align:center;
  }
  .brand-sig{
    display:flex; align-items:center; justify-content:center; gap:6px;
    font-family:'IBM Plex Mono', monospace; font-size:9px; letter-spacing:0.03em; color:var(--ink-soft);
  }
  .brand-icon{width:14px; height:14px; border-radius:50%; object-fit:cover; flex-shrink:0;}
  .brand-sig a{color:var(--primary); text-decoration:none; border-bottom:1px solid var(--line);}
  .claude-star{color:#D98A1F; font-size:14px; margin:0 6px; display:inline-block;}
  @media(max-width:600px){
    header{padding:14px 20px;}
    main{padding:32px 18px 60px;}
  }