: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(--navy2),var(--navy)); 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:.9; font-size:15px;}
  .tabs{display:flex; gap:8px; margin-bottom:16px;}
  .tab{flex:1; padding:12px; border:2px solid var(--border); background:#fff; border-radius:12px; font-size:15px; font-weight:700; cursor:pointer; color:var(--text);}
  .tab.active{background:var(--navy); border-color:var(--navy); color:#fff;}
  .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;}
  .field{margin-bottom:14px;}
  .field label{display:block; font-weight:700; font-size:14px; margin-bottom:6px;}
  .row2{display:grid; grid-template-columns:1fr 1fr; gap:12px;}
  input[type=text],input[type=number]{width:100%; padding:12px; font-size:16px; border:2px solid var(--border); border-radius:10px; background:#fbfdfb;}
  input:focus{outline:none; border-color:var(--green);}
  .hint-text{font-size:13px; color:var(--muted); margin-top:4px;}
  .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(--navy); border-color:var(--navy); color:#fff;}
  .set-head,.set-row{display:grid; grid-template-columns:52px 1fr 1fr; gap:8px; align-items:center;}
  .set-head{font-size:13px; font-weight:700; color:var(--muted); margin-bottom:4px;}
  .set-head span:nth-child(2),.set-head span:nth-child(3){overflow:hidden; text-overflow:ellipsis; white-space:nowrap;}
  .set-row{margin-bottom:8px;}
  .set-num{font-weight:700; font-size:14px; color:var(--muted);}
  .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;}
  .btn:active{transform:scale(.99);}
  .error{color:#b3261e; font-weight:600; font-size:14px; margin:8px 0 0;}
  .hidden{display:none !important;}
  .score-line{text-align:center; font-weight:800; font-size:18px; margin:4px 0 14px;}
  .delta-row{display:flex; align-items:center; gap:12px; background:var(--green-l); border:2px solid var(--green); border-radius:12px; padding:14px; margin-bottom:10px;}
  .delta-row.loser{background:#fdeeee; border-color:#d98888;}
  .delta-name{flex:1; font-weight:800; font-size:17px;}
  .delta-vals{text-align:right;}
  .delta-old{color:var(--muted); font-size:14px; text-decoration:line-through;}
  .delta-new{font-size:22px; font-weight:800;}
  .delta-chg{font-size:15px; font-weight:800;}
  .up{color:var(--green-d);}
  .down{color:#b3261e;}
  .explain{background:#fffbe6; border-left:4px solid #f0b429; padding:12px 14px; border-radius:0 10px 10px 0; margin:14px 0 4px; font-size:15px;}
  .method{font-size:13px; color:var(--muted); margin-top:12px;}
  details.adv{border:2px dashed var(--border); border-radius:10px; padding:10px 12px; margin-bottom:14px; background:#fbfdfb;}
  details.adv summary{font-weight:700; font-size:14px; cursor:pointer;}
  details.adv .row2{margin-top:10px;}
  input[type=date]{width:100%; padding:12px; font-size:16px; border:2px solid var(--border); border-radius:10px; background:#fbfdfb;}
  details.adv{border:2px dashed var(--border); border-radius:10px; padding:10px 12px; margin-bottom:14px; background:#fbfdfb;}
  details.adv summary{font-weight:700; font-size:14px; cursor:pointer;}
  details.adv .row2{margin-top:10px;}
  input[type=date]{width:100%; padding:12px; font-size:16px; border:2px solid var(--border); border-radius:10px; background:#fbfdfb;}
  footer{text-align:center; color:var(--muted); font-size:13px; padding:8px 20px 28px; max-width:640px; margin:0 auto;}
  footer .tools{margin-bottom:10px;}
  footer .tools a{color:var(--green-d); font-weight:700; text-decoration:none; margin:0 8px;}
  .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-btn{background:var(--green);color:#fff;border:0;border-radius:10px;padding:8px 14px;font-weight:700;cursor:pointer;white-space:nowrap}
  .ug-install-x{background:none;border:0;color:#fff;font-size:22px;cursor:pointer;line-height:1;padding:4px}