:root{
    --navy:#0f2b46; --ink:#233a52; --paper:#fdfcfa;
    --card:#ffffff; --line:#e6e9f2;
    --teal:#0e9f8a; --orange:#f08a24; --green:#3aa655; --red:#e05252;
    --gold:#f2b13d; --radius:22px;
    --shadow:0 10px 24px rgba(20,40,80,.14);
  }
  *{box-sizing:border-box; -webkit-tap-highlight-color:transparent;}
  html,body{height:100%;}
  body{
    margin:0; font-family:'Segoe UI',system-ui,-apple-system,sans-serif;
    background:linear-gradient(160deg,#fdfcf9 0%,#f3f6fb 100%);
    color:var(--ink); min-height:100vh; display:flex; flex-direction:column;
  }
  .wrap{max-width:860px; margin:0 auto; width:100%; padding:0 16px;}

  header.top{
    background:linear-gradient(120deg,var(--navy) 0%, #17406b 55%, #1d5387 100%);
    color:#fff; padding:14px 16px; display:flex; align-items:center; gap:10px;
    position:sticky; top:0; z-index:20; box-shadow:0 4px 14px rgba(15,43,70,.35);
  }
  .logo{display:flex;align-items:center;gap:10px;font-size:22px; font-weight:800; letter-spacing:.5px;}
  .logo .mark{width:36px;height:36px;flex:none;border-radius:10px;box-shadow:0 0 0 2px rgba(255,255,255,.28);}
  .logo > span{display:block;}
  .logo small{font-weight:400; opacity:.85; font-size:12.5px; display:block;}
  .head-right{margin-left:auto; display:flex; align-items:center; gap:8px;}
  .pill{
    background:rgba(255,255,255,.14); border:1px solid rgba(255,255,255,.35);
    color:#fff; padding:5px 12px; border-radius:999px; font-size:13.5px; font-weight:600;
  }
  .pill b{color:var(--gold);}

  .btn{
    display:inline-flex; align-items:center; justify-content:center; gap:8px;
    border:none; cursor:pointer; font-weight:700; font-size:16.5px;
    padding:14px 22px; border-radius:16px; transition:transform .08s, box-shadow .2s;
    box-shadow:0 4px 12px rgba(15,43,70,.18);
  }
  .btn:active{transform:scale(.97);}
  .btn.primary{background:linear-gradient(120deg,#0e9f8a,#0b7f6f); color:#fff;}
  .btn.ghost{background:#fff; color:var(--ink); border:2px solid var(--line); box-shadow:none;}
  .btn.small{padding:9px 14px; font-size:14px; border-radius:12px;}
  a.btn.pay-link{flex-direction:column; gap:4px; line-height:1.35;}
  a.btn.pay-link small{font-size:12.5px; opacity:.85;}

  .screen{display:none;}
  .screen.active{display:block; animation:fade .25s;}
  @keyframes fade{from{opacity:0; transform:translateY(8px);} to{opacity:1; transform:none;}}

  .card{
    background:var(--card); border:1px solid var(--line); border-radius:var(--radius);
    padding:22px; box-shadow:var(--shadow); margin-top:16px;
  }
  .subject-card{display:flex; align-items:center; gap:14px; padding:18px; border-radius:18px; cursor:pointer; border:2px solid var(--line); transition:border .15s, transform .1s; flex:1; min-width:200px;}
  .subject-card:hover{border-color:var(--teal);}
  .subject-card:active{transform:scale(.98);}
  .subject-card .emo{font-size:34px;}
  .subject-card .name{font-weight:800; font-size:17px;}
  .subject-card .sub{font-size:13px; color:#7a8aa0;}
  .subject-card .check{width:26px; height:26px; border-radius:50%; border:2px solid #b9c3d4; margin-left:auto; display:inline-block; flex:none;}
  .subject-card.sel .check{background:var(--teal); border-color:var(--teal);}
  .subject-card.sel{border-color:var(--teal); background:#eefaf7;}

  .field{
    display:block; width:100%; padding:14px 16px; border-radius:14px; border:2px solid var(--line);
    font-size:17px; background:#fff; margin-top:6px;
  }
  .field:focus{outline:none; border-color:var(--teal); box-shadow:0 0 0 3px rgba(14,159,138,.18);}
  label.lbl{font-size:13.5px; font-weight:700; color:#5b6b82; display:block; margin-bottom:8px; margin-top:14px;}
  label.lbl:first-of-type{margin-top:0;}
  .chip-row{display:flex; flex-wrap:wrap; gap:8px;}
  .chip{
    padding:9px 15px; border-radius:999px; border:2px solid var(--line); background:#fff;
    font-size:14.5px; font-weight:600; cursor:pointer;
  }
  .chip.sel{background:var(--navy); color:#fff; border-color:var(--navy);}

  .quiz-top{display:flex; gap:10px; flex-wrap:wrap; align-items:center; margin-top:4px;}
  .progress-track{height:10px; background:#e8ecf4; border-radius:99px; overflow:hidden; margin-top:12px;}
  .progress-fill{height:100%; background:linear-gradient(90deg,#0e9f8a,#f2b13d,#f08a24); border-radius:99px; width:0%; transition:width .4s;}
  .progress-label{font-size:12.5px; color:#7a8aa0; text-align:right; margin-top:3px;}

  .q-card{background:var(--card); border:1px solid var(--line); border-radius:var(--radius); padding:22px; box-shadow:var(--shadow); margin-top:12px;}
  .q-meta{display:flex; gap:8px; flex-wrap:wrap; margin-bottom:10px;}
  .tag{background:#eef1f8; color:#4a5a78; font-size:12.5px; font-weight:700; padding:3px 10px; border-radius:99px;}
  .tag.grade{background:var(--navy); color:#fff;}
  .q-text{font-size:21px; font-weight:700; line-height:1.45; margin:6px 0 14px; color:var(--ink);}
  .visual-box{
    display:flex; justify-content:center; background:linear-gradient(135deg,#f4f8ff,#eef2f8);
    border:1px dashed #c9d4e4; border-radius:16px; padding:14px; margin-bottom:14px;
  }
  .visual-box svg{max-width:100%; height:auto;}
  .opts{display:grid; gap:12px;}
  .opt{
    display:flex; align-items:center; gap:14px; width:100%; text-align:left;
    background:#fff; border:2px solid var(--line); border-radius:16px; padding:15px 18px;
    font-size:17px; font-weight:600; cursor:pointer; transition:border .12s, background .12s;
    font-family:inherit; color:var(--ink);
  }
  .opt:hover{border-color:#b9c6dc;}
  .opt .letter{
    width:36px; height:36px; border-radius:50%; flex:none; display:flex; align-items:center; justify-content:center;
    background:#eef1f8; color:#4a5a78; font-weight:800; font-size:15px;
  }
  .opt.correct{background:#e9f9ef; border-color:var(--green);}
  .opt.correct .letter{background:var(--green); color:#fff;}
  .opt.wrong{background:#fdeeee; border-color:var(--red);}
  .opt.wrong .letter{background:var(--red); color:#fff;}
  .opt.dim{opacity:.45;}
  .opt:disabled{cursor:default;}

  .toolbar{display:flex; gap:8px; flex-wrap:wrap; align-items:center; margin-top:14px;}
  .icon-btn{
    background:#fff; border:2px solid var(--line); border-radius:12px; width:44px; height:44px;
    font-size:19px; cursor:pointer; display:flex; align-items:center; justify-content:center;
  }
  .icon-btn.on{background:#eaf6f2; border-color:var(--teal);}

  .feedback{border-radius:18px; padding:16px 18px; margin-top:14px; display:none; animation:fade .25s;}
  .feedback.good{background:#e9f9ef; border:2px solid var(--green);}
  .feedback.bad{background:#fdeeee; border:2px solid var(--red);}
  .feedback h4{display:flex; align-items:center; gap:8px; margin:0 0 8px; font-size:17px;}
  .feedback p{margin:4px 0; line-height:1.5; font-size:15px;}
  .feedback .tip-label{font-weight:800; color:#0b6b52;}
  .feedback .tip-label.bad{color:#a33;}
  .feedback .next-row{margin-top:12px; display:flex; gap:10px; flex-wrap:wrap;}

  .gauge-panel{
    background:linear-gradient(135deg,#0f2b46,#1d5387); color:#fff; border-radius:16px;
    padding:12px 16px; margin-top:14px;
  }
  .gauge-panel .g-title{font-size:13px; font-weight:800; letter-spacing:.3px; opacity:.9;}
  .gauge-row{display:flex; align-items:center; gap:8px; margin-top:6px;}
  .gauge-row .g-label{font-size:12px; min-width:118px; color:#cfe0f5;}
  .gauge-row .g-bar{flex:1; height:9px; background:rgba(255,255,255,.16); border-radius:99px; overflow:hidden;}
  .gauge-row .g-fill{height:100%; background:linear-gradient(90deg,#f2b13d,#f7d27a); width:0%; transition:width .4s;}
  .gauge-row .g-num{font-size:12px; font-weight:800; min-width:34px; text-align:right; color:var(--gold);}
  .gauge-ready{display:none; font-size:13px; color:#7df2b0; font-weight:700; margin-top:6px;}

  .modal-backdrop{
    position:fixed; inset:0; background:rgba(15,43,70,.55); backdrop-filter:blur(3px);
    display:flex; align-items:center; justify-content:center; z-index:100; padding:16px;
  }
  .modal{
    width:min(92vw,520px); max-height:88vh; overflow:auto; background:#fff;
    border-radius:26px; padding:24px; box-shadow:0 20px 50px rgba(15,43,70,.4); animation:pop .3s;
  }
  @keyframes pop{from{transform:scale(.92); opacity:0;} to{transform:scale(1); opacity:1;}}
  .gauge-big{width:170px; height:170px; margin:0 auto; position:relative;}
  .gauge-big .grade-num{position:absolute; inset:0; display:flex; flex-direction:column; align-items:center; justify-content:center; font-size:44px; font-weight:900; color:var(--navy);}
  .gauge-big .grade-num small{font-size:13px; color:#7a8aa0;}

  .stat-grid{display:grid; grid-template-columns:repeat(auto-fit,minmax(150px,1fr)); gap:14px;}
  .stat{background:#f4f7fc; border-radius:16px; padding:14px; text-align:center;}
  .stat .v{font-size:26px; font-weight:900; color:var(--navy);}
  .stat .k{font-size:12.5px; color:#6b7c96; margin-top:4px;}
  .bar-row{display:flex; align-items:center; gap:10px; margin:6px 0;}
  .bar-row .k{width:70px; font-size:13px; color:#5b6b82;}
  .bar-row .track{flex:1; height:12px; background:#edf0f7; border-radius:99px; overflow:hidden;}
  .bar-row .fill{height:100%; border-radius:99px; width:0%; transition:width .6s;}
  .suggest-list li{margin:6px 0; line-height:1.45;}
  .hint-box{background:#fff7ea; border:1px solid #f2d9a8; border-radius:14px; padding:10px 14px; font-size:14px; color:#7a5b1e; margin-top:8px;}

  .mascot{font-size:44px; line-height:1;}
  h1.page{font-size:26px; font-weight:900; color:var(--navy); margin:0 0 6px;}
  .lead{color:#5b6b82; font-size:15.5px; line-height:1.55;}
  .how{background:#f2f7ff; border:1px solid #d9e4f5; border-radius:16px; padding:14px 16px; font-size:14px; line-height:1.6; margin-top:14px;}
  .how b{color:var(--navy);}
  .row-2{display:flex; gap:12px; flex-wrap:wrap;}
  .speaker-note{font-size:13px; color:#7a8aa0; display:flex; align-items:center; gap:6px;}
  .footer{color:#9aa9bd; font-size:12.5px; text-align:center; padding:18px 0;}

  @media (max-width:600px){
    .q-text{font-size:18.5px;}
    .opt{font-size:15.5px; padding:13px 15px;}
    h1.page{font-size:22px;}
    .card{padding:18px;}
    .logo{font-size:19px;}
  }

  /* ---------- printable report ---------- */
  @media print{
    body{background:#fff !important;}
    header.top, #screen-gate, #screen-home, #screen-quiz, .modal-backdrop,
    .no-print{display:none !important;}
    #screen-report{display:block !important;}
    .card{box-shadow:none !important; border:1px solid #dde3ee; page-break-inside:avoid;}
    .btn{display:none !important;}
    .footer{display:none !important;}
  }

/* former-inline-style classes (site-specific) */
.tt-up-rel{text-transform:uppercase;position:relative;z-index:5}
.c-5a6b7e{color:#5a6b7e!important}
.c-b4232a{color:#B4232A!important}
.c-6b7c96{color:#6b7c96!important}
.c-e05252{color:#e05252!important}
.c-9aa9bd{color:#9aa9bd!important}
.c-7a8aa0{color:#7a8aa0!important}
.box-ok{background:#f2fbf8;border:1px solid #bfe8dd!important}
.box-warn{background:#fff6e6;border-color:#f2b13d!important}
.bg-teal{background:#0e9f8a!important}
.bar-stat{width:70px;font-size:13px;color:#5b6b82}