:root{
    --navy:#0a1f33; --navy2:#12294d;
    --green:#2f9e44; --green-d:#1e6b2e; --green-l:#e8f5e9;
    --bg:#f3f6f1; --card:#ffffff; --text:#1c2733; --muted:#5d6b7a;
    --border:#dfe7de; --radius:16px;
  }
  *{box-sizing:border-box; -webkit-tap-highlight-color:transparent;}
  body{margin:0; font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif; background:var(--bg); color:var(--text); line-height:1.5;}
  .site-header{background:var(--navy); color:#fff; padding:12px 16px; display:flex; align-items:center; justify-content:space-between; position:sticky; top:0; z-index:10;}
  .site-header a.back{color:#fff; text-decoration:none; font-weight:600; font-size:15px;}
  .site-header a.back:hover{text-decoration:underline;}
  .brand{font-weight:800; letter-spacing:.3px;}
  .wrap{max-width:640px; margin:0 auto; padding:16px 16px 32px;}
  .hero{background:linear-gradient(135deg,var(--green-d),var(--green)); color:#fff; border-radius:var(--radius); padding:28px 22px; margin-bottom:16px; text-align:center;}
  .hero h1{margin:0 0 6px; font-size:30px;}
  .hero p{margin:0; opacity:.92; font-size:15px;}
  .card{background:var(--card); border-radius:var(--radius); padding:20px; margin-bottom:16px; box-shadow:0 2px 10px rgba(10,31,51,.06); border:1px solid var(--border);}
  .card h2{margin:0 0 12px; font-size:20px;}
  .card p.lede{margin:0 0 14px; color:var(--muted); font-size:15px;}
  .field{margin-bottom:14px;}
  .field label{display:block; font-weight:700; font-size:14px; margin-bottom:6px;}
  select{width:100%; padding:14px; font-size:17px; border:2px solid var(--border); border-radius:10px; background:#fbfdfb; color:var(--text);}
  select:focus{outline:none; border-color:var(--green);}
  .seg{display:flex; gap:8px; flex-wrap:wrap;}
  .seg-btn{flex:1 1 0; min-width:70px; padding:10px 6px; border:2px solid var(--border); background:#fbfdfb; border-radius:10px; font-size:14px; font-weight:600; cursor:pointer; color:var(--text);}
  .seg-btn.active{background:var(--green); border-color:var(--green); color:#fff;}
  .months{display:grid; grid-template-columns:repeat(4,1fr); gap:8px;}
  .months .seg-btn{min-width:0;}
  .btn{display:block; width:100%; padding:15px; font-size:17px; font-weight:800; color:#fff; background:linear-gradient(135deg,var(--green),var(--green-d)); border:none; border-radius:12px; cursor:pointer; margin-top:6px; text-align:center; text-decoration:none;}
  .btn:active{transform:scale(.99);}
  .btn.secondary{background:#fff; color:var(--green-d); border:2px solid var(--green); margin-top:10px;}
  .error{color:#b3261e; font-weight:600; font-size:14px; margin:8px 0 0;}
  .hidden{display:none !important;}
  .finder-row{display:block; padding:14px 0; border-top:1px solid var(--border); text-decoration:none; color:var(--text);}
  .finder-row:first-of-type{border-top:none; padding-top:2px;}
  .finder-row strong{color:var(--green-d); font-size:16px;}
  .finder-row span{display:block; color:var(--muted); font-size:14px; margin-top:2px;}
  .lvl-row{display:flex; gap:12px; padding:13px 0; border-top:1px solid var(--border);}
  .lvl-row:first-of-type{border-top:none; padding-top:2px;}
  .lvl-badge{flex:0 0 auto; width:46px; height:46px; border-radius:12px; background:var(--green-l); color:var(--green-d); font-weight:800; font-size:18px; display:flex; align-items:center; justify-content:center;}
  .lvl-body{flex:1 1 auto;}
  .lvl-body p{margin:0 0 6px; font-size:15px;}
  .lvl-body a{color:var(--green-d); font-weight:700; font-size:14px; text-decoration:none;}
  .lvl-body a:hover{text-decoration:underline;}
  .evt{padding:14px 0; border-top:1px solid var(--border);}
  .evt:first-of-type{border-top:none; padding-top:2px;}
  .evt h3{margin:0 0 4px; font-size:17px;}
  .evt .when{color:var(--green-d); font-weight:700; font-size:14px;}
  .evt .where{color:var(--text); font-size:14px; margin:2px 0;}
  .evt p{margin:4px 0 0; color:var(--muted); font-size:14px;}
  .evt .note{font-size:13px; font-style:italic;}
  .sec-name{font-size:22px; font-weight:800; margin:0 0 4px;}
  .sec-cov{color:var(--muted); font-size:15px; margin:0 0 6px;}
  .sec-note{font-size:14px; background:var(--green-l); border-radius:10px; padding:10px 12px; margin:10px 0 0;}
  footer{text-align:center; color:var(--muted); font-size:13px; padding:8px 16px 28px;}
  footer a{color:var(--green-d); text-decoration:none; font-weight:600;}
  .tools{margin-bottom:10px; line-height:2;}
  .tools a{margin:0 6px;}
  .ug-install{display:flex; align-items:center; gap:12px; background:var(--navy); color:#fff; padding:10px 14px; font-size:14px;}
  .ug-install[hidden]{display:none;}
  .ug-install-text{flex:1;}
  .ug-install button{background:var(--green); color:#fff; border:none; border-radius:8px; padding:8px 12px; font-weight:700; cursor:pointer;}
  .ug-install .x{background:transparent; color:#fff; font-size:18px; padding:4px 8px;}