:root{
  --bg:#f4f7fb; --panel:#ffffff; --line:#dfe7f2; --text:#223046; --muted:#6b7b93;
  --primary:#3d6df2; --primary-dark:#2f56c0; --soft:#edf3ff; --good:#e8f8ec; --bad:#fdecec;
  --good-border:#78c58a; --bad-border:#e68989; --shadow:0 10px 30px rgba(39,64,111,.08);
}
*{box-sizing:border-box}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:linear-gradient(180deg,#f7faff 0%,#eef4fb 100%);color:var(--text)}
.app-shell{max-width:1100px;margin:0 auto;padding:20px}
.topbar{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:20px}
.brand{display:flex;align-items:center;gap:14px}
.brand-badge{width:56px;height:56px;border-radius:18px;background:linear-gradient(135deg,#5f86ff,#7db6ff);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:20px;box-shadow:var(--shadow)}
.brand h1{margin:0;font-size:28px}.brand p{margin:2px 0 0;color:var(--muted);font-size:14px}
.hidden{display:none !important}
.ghost-btn,.primary-btn,.secondary-btn,.choice-btn,.menu-tile,.select-box,.word-cell{font:inherit}
.ghost-btn,.primary-btn,.secondary-btn,.choice-btn,.menu-tile{border:none;cursor:pointer;transition:.18s ease}
.ghost-btn{background:#fff;color:var(--text);border:1px solid var(--line);padding:12px 16px;border-radius:16px}
.ghost-btn:hover{background:#f8fbff}
.screen-card{background:var(--panel);border:1px solid rgba(255,255,255,.65);border-radius:32px;box-shadow:var(--shadow);padding:24px}
.menu-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.menu-tile{background:var(--panel);border:2px solid var(--line);border-radius:28px;padding:22px;text-align:left;min-height:170px;box-shadow:var(--shadow)}
.menu-tile:hover{transform:translateY(-2px);border-color:#bfd0ff}
.menu-icon{width:64px;height:64px;border-radius:20px;display:flex;align-items:center;justify-content:center;font-size:30px;background:var(--soft);margin-bottom:14px}
.menu-tile h2{margin:0 0 8px;font-size:22px}.menu-tile p{margin:0;color:var(--muted);line-height:1.45}
.play-layout{display:grid;grid-template-columns:1fr 300px;gap:20px;margin-top:18px}
.stage{position:relative;background:#f9fbff;border:2px solid #e6eef9;border-radius:30px;padding:24px;min-height:520px}
.side-panel{display:flex;flex-direction:column;gap:16px}
.panel{background:#f9fbff;border:1px solid #e6eef9;border-radius:24px;padding:18px}
.panel h3{margin:0 0 12px;font-size:16px}
.center-stack{display:flex;flex-direction:column;align-items:center;gap:18px}
.image-frame{width:min(100%,360px);aspect-ratio:1/1;background:#fff;border:2px dashed #cfe0fa;border-radius:28px;display:flex;align-items:center;justify-content:center;overflow:hidden;cursor:pointer}
.image-frame img{width:86%;height:86%;object-fit:contain}
.question{margin:0;font-size:32px;font-weight:800;text-align:center}
.controls{display:flex;flex-wrap:wrap;justify-content:center;gap:12px}
.primary-btn,.secondary-btn{padding:14px 18px;border-radius:18px;font-weight:700}
.primary-btn{background:var(--primary);color:#fff}.primary-btn:hover{background:var(--primary-dark)}
.secondary-btn{background:#fff;color:var(--text);border:1px solid var(--line)}.secondary-btn:hover{background:#f8fbff}
.status{min-height:72px;border-radius:18px;padding:14px;line-height:1.45;background:var(--soft)}
.progress-bar{display:grid;grid-template-columns:repeat(10,1fr);gap:6px}
.token{height:28px;border-radius:999px;background:#eaf0fb}.token.fill{background:linear-gradient(135deg,#ffd45a,#ffbe2e)}
.choice-grid.images{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;width:100%;max-width:420px}
.choice-btn{min-height:72px;border-radius:22px;background:#fff;border:2px solid var(--line);color:var(--text);font-weight:700;font-size:20px;padding:14px}
.choice-btn:hover{border-color:#bfd0ff;transform:translateY(-1px)}
.choice-btn.correct{background:var(--good);border-color:var(--good-border)}
.choice-btn.wrong{background:var(--bad);border-color:var(--bad-border)}
.choice-btn.locked{pointer-events:none}
.image-choice{padding:8px;aspect-ratio:1/1;display:flex;align-items:center;justify-content:center;min-height:120px}
.image-choice img{width:58%;height:58%;object-fit:contain}
.play-main{display:grid;grid-template-columns:minmax(280px,1fr) minmax(240px,320px);gap:22px;align-items:center}
.play-left{display:flex;flex-direction:column;align-items:center;gap:18px}
.play-right{display:flex;flex-direction:column;gap:14px}
.play2-main{display:flex;flex-direction:column;align-items:center;gap:0}
.select-box{width:100%;padding:12px 14px;border-radius:16px;border:1px solid var(--line);background:#fff;color:var(--text)}
.feedback-popup{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);min-width:220px;padding:18px 22px;border-radius:20px;font-size:28px;font-weight:800;text-align:center;box-shadow:0 18px 40px rgba(34,48,70,.18);z-index:10}
.feedback-popup.good{background:var(--good);border:2px solid var(--good-border)} .feedback-popup.bad{background:var(--bad);border:2px solid var(--bad-border)}
.progress-area{background:#f9fbff;border:1px solid #e6eef9;border-radius:24px;padding:18px}
.bar-chart{display:flex;flex-direction:column;gap:12px}
.bar-row{display:grid;grid-template-columns:72px 1fr 56px;gap:12px;align-items:center}
.bar-label{font-weight:700}.bar-track{height:18px;background:#eaf0fb;border-radius:999px;overflow:hidden}
.bar-fill{height:100%;background:linear-gradient(135deg,#5f86ff,#7db6ff);border-radius:999px}
.bar-btn{all:unset;cursor:pointer;display:block;width:100%}
.level-count{color:var(--muted);font-size:15px;text-align:right}
.word-detail-card{background:#f9fbff;border:1px solid #e6eef9;border-radius:22px;padding:16px}
.word-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:12px}
.word-cell{background:#fff;border:1px solid var(--line);border-radius:16px;padding:10px 12px;font-size:14px;text-align:center}
.small-note{color:var(--muted);font-size:13px}
.empty-image{color:#90a2bb;font-size:14px;text-align:center;line-height:1.5;padding:20px}
@media (max-width: 900px){.play-layout{grid-template-columns:1fr}}
@media (max-width: 760px){
  .menu-grid,.play-main,.choice-grid.images,.word-grid{grid-template-columns:1fr}
  .question{font-size:28px}.screen-card,.stage{padding:18px}.choice-grid.images{max-width:260px}.bar-row{grid-template-columns:56px 1fr 40px}
}


.training-ready-wrap{justify-content:center;min-height:440px}.ready-card{width:min(100%,420px);padding:44px 24px;border-radius:28px;border:2px dashed #cfe0fa;background:#fff;box-shadow:var(--shadow);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;cursor:pointer}.ready-card:hover{transform:translateY(-2px);border-color:#bfd0ff}.ready-title{font-size:40px;font-weight:800;text-align:center}.ready-subtitle{font-size:28px;font-weight:700;text-align:center;color:var(--primary)}.ready-hint{font-size:15px;color:var(--muted);text-align:center}