:root{--bg1:#1b2a4a;--bg2:#2d4373;--accent:#ffd23f;--accent2:#ff6b6b;--good:#4cd964;--bad:#ff6b6b;--card:#ffffff;--ink:#1b2a4a;--muted:#7a8bab;--radius:18px}*{box-sizing:border-box}html,body{margin:0;height:100%}body{font-family:Segoe UI,Verdana,Tahoma,sans-serif;background:radial-gradient(circle at 20% 10%,#2d4373,#101a33 70%);color:var(--ink);min-height:100vh;display:flex;align-items:center;align-items:safe center;justify-content:center;padding:16px}#root{width:100%;display:flex;justify-content:center}.app{width:100%;max-width:900px;background:var(--card);border-radius:24px;box-shadow:0 20px 60px #0006;overflow:hidden;min-height:640px;display:flex;flex-direction:column}.screen{flex:1;display:flex;flex-direction:column}header.topbar{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;padding:14px 20px;background:var(--bg1);color:#fff;row-gap:8px}header.topbar .brand{font-weight:800;font-size:20px;display:flex;align-items:center;gap:8px}header.topbar .stats{display:flex;flex-wrap:wrap;gap:10px;font-size:14px;font-weight:600}header.topbar .stats span{max-width:160px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}header.topbar .stats span{background:#ffffff1f;padding:6px 10px;border-radius:12px}.content{padding:24px;flex:1;display:flex;flex-direction:column;gap:16px}h1{margin:0 0 4px;font-size:26px}h2{margin:0 0 8px;font-size:20px}p.lead{color:var(--muted);margin:0 0 8px;line-height:1.5}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:14px}.world-card{border-radius:var(--radius);padding:16px;color:#fff;cursor:pointer;position:relative;min-height:150px;display:flex;flex-direction:column;justify-content:flex-end;border:3px solid transparent;transition:.15s}.world-card:hover{transform:translateY(-3px);border-color:var(--accent)}.world-card.locked{opacity:.45;cursor:not-allowed;filter:grayscale(60%)}.world-card .emoji{font-size:38px;position:absolute;top:12px;left:12px}.world-card 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rgba(255,255,255,.5)}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.nav-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:auto;padding-top:8px}.pill-row{display:flex;gap:8px;flex-wrap:wrap}.pill{background:#eef1f8;border-radius:20px;padding:6px 12px;font-size:13px;font-weight:700;color:var(--ink);cursor:default}.diff-pill{border:2px solid transparent;cursor:pointer;transition:.15s}.diff-pill.active{background:var(--accent);color:#3a2900;border-color:#e6b800}.game-wrap{background:linear-gradient(180deg,#dff1ff,#fff);flex:1;display:flex;flex-direction:column;position:relative}.prep-overlay{position:absolute;top:0;right:0;bottom:0;left:0;background:#10182ef0;color:#fff;z-index:20;display:flex;align-items:center;justify-content:center;border-radius:0 0 24px 24px}.prep-box{text-align:center;padding:20px;max-width:360px}.prep-emoji{font-size:44px;margin-bottom:6px}.prep-title{font-size:22px;font-weight:800;margin-bottom:8px}.prep-text{font-size:14px;color:#c7d0ea;line-height:1.5;margin-bottom:14px}.prep-count{font-size:64px;font-weight:900;color:var(--accent);margin-bottom:16px}.track-area{position:relative;height:170px;margin:16px 20px 0;border-radius:16px;overflow:hidden}.finish-flag{position:absolute;right:14px;top:0;bottom:0;width:6px;background:repeating-linear-gradient(45deg,#222 0,#222 8px,#fff 8px,#fff 16px)}.lane{position:absolute;left:0;right:26px;height:2px;background:#00000014}.lane.top{top:64px}.lane.bottom{top:120px}.runner{position:absolute;width:44px;height:44px;display:flex;align-items:center;justify-content:center;font-size:40px;transition:left .12s linear;filter:drop-shadow(0 4px 4px rgba(0,0,0,.25))}.runner.player{top:28px;width:56px;height:56px;font-size:44px}.runner.ghost{top:96px;opacity:.75;width:38px;height:38px;font-size:34px}.runner.bump{animation:bump .25s}@keyframes bump{0%{transform:translateY(0) rotate(0)}40%{transform:translateY(-6px) rotate(-8deg)}to{transform:translateY(0) rotate(0)}}.speed-label{position:absolute;left:14px;top:8px;background:#ffffffd9;border-radius:10px;padding:3px 8px;font-size:12px;font-weight:800}.text-panel{margin:16px 20px;background:#fff;border:2px solid #eef1f8;border-radius:16px;padding:18px;font-size:22px;line-height:1.9;flex:1;overflow:auto}.word{padding:1px 3px;border-radius:6px;transition:.15s}.word.current{background:var(--accent);box-shadow:0 0 0 2px #e6b800}.word.correct{background:#d9f7db;color:#1c7a2e}.word.missed{background:#ffe0e0;color:#a92222;text-decoration:line-through}.word.read-done{color:#9aa2b8}.word[data-para]{display:block;margin-top:14px}.reward-toast{position:fixed;left:50%;bottom:110px;transform:translate(-50%);z-index:30;background:#1c7a2e;color:#fff;font-weight:800;padding:10px 18px;border-radius:999px;box-shadow:0 6px 18px #00000040;animation:rewardPop 2.6s ease forwards}@keyframes rewardPop{0%{opacity:0;transform:translate(-50%) translateY(10px)}12%{opacity:1;transform:translate(-50%) translateY(0)}80%{opacity:1}to{opacity:0;transform:translate(-50%) translateY(-8px)}}.game-controls{display:flex;align-items:center;gap:14px;padding:14px 20px 20px;flex-wrap:wrap}.mic-btn{width:64px;height:64px;border-radius:50%;border:none;background:var(--accent2);color:#fff;font-size:26px;cursor:pointer;box-shadow:0 6px #c94848}.mic-btn.listening{background:var(--good);box-shadow:0 6px #2e9e3f;animation:pulse 1s infinite}@keyframes pulse{0%{box-shadow:0 6px #2e9e3f,0 0 #4cd96480}70%{box-shadow:0 6px #2e9e3f,0 0 0 14px #4cd96400}to{box-shadow:0 6px #2e9e3f,0 0 #4cd96400}}.live-stats{display:flex;gap:18px;font-weight:700;font-size:14px;color:var(--ink)}.live-stats b{font-size:18px;display:block}.status-line{font-size:13px;color:var(--muted);min-width:220px}.stars{font-size:44px;letter-spacing:4px}.result-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:12px 0}.result-grid.two-col{grid-template-columns:repeat(2,1fr)}.result-card{background:#f4f6fb;border-radius:14px;padding:14px;text-align:center}.result-card b{font-size:24px;display:block}.achv-toast{background:#fff7dd;border:2px solid var(--accent);border-radius:12px;padding:10px 14px;font-weight:700;display:flex;gap:10px;align-items:center}.exam-summary{background:#eef1f8;border-radius:14px;padding:14px 16px;text-align:left;line-height:1.7}.quiz-q{background:#f7f8fc;border-radius:14px;padding:14px 16px}.quiz-q .qtext{font-weight:800;margin-bottom:10px;font-size:15px}.quiz-opt{display:block;width:100%;text-align:left;background:#fff;border:2px solid #eef1f8;border-radius:10px;padding:10px 12px;margin-bottom:8px;cursor:pointer;font-size:14px;transition:.15s}.quiz-opt.selected{border-color:var(--accent);background:#fff7dd}.quiz-opt.correct{border-color:var(--good);background:#d9f7db}.quiz-opt.wrong{border-color:var(--bad);background:#ffe0e0}.quiz-opt:disabled{cursor:default}.quiz-source{font-size:11px;color:var(--muted);margin-top:-6px}.shop-list{max-height:420px;overflow-y:auto;padding-right:4px;display:flex;flex-direction:column;gap:10px}.shop-summary{font-size:12px;color:var(--muted);margin:-4px 0 4px}.list-card{display:flex;align-items:center;gap:14px;background:#f7f8fc;border-radius:14px;padding:12px 16px}.list-card.locked{opacity:.5}.list-card .icon{font-size:28px}.list-card .info{flex:1}.list-card .info b{display:block;font-size:15px}.list-card .info span{font-size:12px;color:var(--muted)}table.lb{width:100%;border-collapse:collapse}table.lb th,table.lb td{text-align:left;padding:8px 10px;font-size:14px;border-bottom:1px solid #eef1f8}table.lb tr.me{background:#fff7dd;font-weight:800}.tier{padding:3px 9px;border-radius:10px;font-size:11px;font-weight:800;color:#fff}.tier.bronze{background:#a86a3d}.tier.silver{background:#8b98ab}.tier.gold{background:#d9a91a}.tier.plat{background:#4aa3c9}.tier.dia{background:#7b5ce0}.banner-warn{background:#fff3cd;border:1px solid #f0c760;border-radius:12px;padding:10px 14px;font-size:13px;color:#7a5b00}footer.tabbar{display:flex;border-top:1px solid #eef1f8}footer.tabbar button{flex:1;border:none;background:#fff;padding:12px 4px;font-size:12px;font-weight:700;color:var(--muted);cursor:pointer}footer.tabbar button.active{color:var(--ink);box-shadow:inset 0 3px 0 var(--accent)}@media (max-width: 520px){.content{padding:16px}.text-panel{margin:12px;font-size:19px}.track-area{margin:12px 12px 0}}