:root{--primary: #ff5722;--primary-soft: #ffe3d6;--primary-dark: #d84315;--bg: #fff8f0;--surface: #ffffff;--sand: #f3e5d8;--ink: #2b1d12;--ink-soft: #8a7a6b;--line: #eadbcc;--green: #2e7d32;--green-soft: #e6f4e8;--amber: #e8890c;--amber-soft: #fdf1dc;--red: #c62828;--red-soft: #fdeaea;--radius: 16px;--shadow: 0 6px 24px rgba(86, 46, 12, .1);--shadow-sm: 0 2px 10px rgba(86, 46, 12, .08);font-family:Segoe UI,system-ui,-apple-system,Helvetica Neue,sans-serif}*{box-sizing:border-box}html,body,#root{margin:0;padding:0;min-height:100%}body{background:var(--bg);color:var(--ink);font-size:15px;-webkit-font-smoothing:antialiased}button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}input,select,textarea{font-family:inherit;font-size:15px;color:var(--ink)}.app{max-width:480px;margin:0 auto;min-height:100vh;padding-bottom:84px}.tabbar{position:fixed;bottom:0;left:50%;transform:translate(-50%);width:100%;max-width:480px;background:var(--surface);border-top:1px solid var(--line);display:flex;z-index:50;padding:6px 4px calc(6px + env(safe-area-inset-bottom))}.tabbar button{flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;padding:8px 4px;font-size:11px;font-weight:600;color:var(--ink-soft);border-radius:12px;transition:color .15s}.tabbar button.active{color:var(--primary)}.tabbar button .tab-icon{width:22px;height:22px}.page{padding:16px;display:flex;flex-direction:column;gap:14px}.card{background:var(--surface);border-radius:var(--radius);border:1px solid var(--line);box-shadow:var(--shadow-sm);padding:16px}.card-title{font-size:15px;font-weight:700;margin:0 0 8px}.row{display:flex;align-items:center;gap:10px}.row.between{justify-content:space-between}.grow{flex:1}.muted{color:var(--ink-soft);font-size:13px}.badge{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:700}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 18px;border-radius:12px;font-weight:700;font-size:14px;transition:transform .08s,box-shadow .15s}.btn:active{transform:translateY(1px)}.btn.primary{background:var(--primary);color:#fff;box-shadow:0 4px 14px #ff572259}.btn.secondary{background:var(--primary-soft);color:var(--primary-dark)}.btn.ghost{background:transparent;border:1.5px solid var(--line);color:var(--ink)}.btn.danger{background:var(--red-soft);color:var(--red)}.btn.block{width:100%}.btn:disabled{opacity:.5;cursor:not-allowed}.instrument-grid{display:grid;grid-template-columns:1fr;gap:14px}.instrument-card{display:flex;align-items:center;gap:16px;padding:20px;border-radius:20px;border:2px solid var(--line);background:var(--surface);box-shadow:var(--shadow);text-align:left;transition:transform .1s,border-color .15s}.instrument-card:hover{transform:translateY(-2px);border-color:var(--card-color, var(--primary))}.instrument-card .inst-icon{width:56px;height:56px;flex:none;border-radius:16px;display:grid;place-items:center}.instrument-card h3{margin:0 0 4px;font-size:18px}.instrument-card p{margin:0;color:var(--ink-soft);font-size:13px}.level-section{margin-bottom:4px}.level-header{display:flex;align-items:center;gap:10px;margin-bottom:10px}.level-dot{width:12px;height:12px;border-radius:50%}.level-header h3{margin:0;font-size:16px}.progress-track{height:8px;background:var(--sand);border-radius:999px;overflow:hidden;flex:1}.progress-fill{height:100%;border-radius:999px;transition:width .3s}.lesson-card{display:flex;align-items:center;gap:12px;padding:14px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--line);margin-bottom:10px;width:100%;text-align:left}.lesson-card.locked{opacity:.62}.lesson-card.done{border-color:var(--green);background:linear-gradient(180deg,#fff,#f4fbf4)}.lesson-icon{width:44px;height:44px;flex:none;border-radius:12px;display:grid;place-items:center;font-size:18px;font-weight:800;background:var(--card-bg, var(--primary-soft));color:var(--card-color, var(--primary-dark))}.lesson-card h4{margin:0 0 3px;font-size:15px}.lesson-card .sub{font-size:12.5px;color:var(--ink-soft)}.section-title{font-size:17px;font-weight:800;margin:4px 0 0}.hero{background:linear-gradient(135deg,var(--primary),#ff7a3c);color:#fff;border-radius:20px;padding:20px;box-shadow:0 8px 24px #ff57224d;position:relative;overflow:hidden}.hero h1{margin:0 0 4px;font-size:22px}.hero p{margin:0;opacity:.92;font-size:13.5px}.streak-chip{display:inline-flex;align-items:center;gap:6px;background:#ffffff38;border-radius:999px;padding:5px 12px;font-weight:800;font-size:13px}.chip-row{display:flex;flex-wrap:wrap;gap:8px}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#2b1d1273;display:grid;place-items:center;padding:20px;z-index:100}.modal{background:var(--surface);border-radius:20px;max-width:420px;width:100%;padding:20px;box-shadow:0 20px 60px #0000004d;max-height:86vh;overflow:auto}.stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.stat{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:14px}.stat .num{font-size:26px;font-weight:800}.stat .lbl{font-size:12px;color:var(--ink-soft);margin-top:2px}.metro{display:flex;flex-direction:column;align-items:center;gap:14px}.metro-bpm{font-size:44px;font-weight:800;font-variant-numeric:tabular-nums}.metro-slider{width:100%;accent-color:var(--primary)}.metro-pulse{width:64px;height:64px;border-radius:50%;background:var(--primary-soft);display:grid;place-items:center;font-weight:800;font-size:20px;color:var(--primary-dark);transition:transform .08s,background .08s}.metro-pulse.on{background:var(--primary);color:#fff;transform:scale(1.06)}.tuner{display:flex;flex-direction:column;align-items:center;gap:12px}.tuner-note{font-size:54px;font-weight:800}.tuner-needle-wrap{position:relative;width:100%;height:40px}.tuner-scale{position:absolute;left:0;right:0;top:50%;height:4px;background:linear-gradient(90deg,#f4b7ad,#d84315,#2e7d32,#d84315,#f4b7ad);border-radius:4px;transform:translateY(-50%)}.tuner-needle{position:absolute;top:4px;bottom:4px;width:3px;background:var(--ink);border-radius:3px;transform:translate(-50%);transition:left .06s linear}.tuner-status{font-weight:800;font-size:14px}.rec-row{display:flex;gap:10px;align-items:center}.rec-dot{width:14px;height:14px;border-radius:50%;background:var(--red);animation:blink 1s infinite}@keyframes blink{50%{opacity:.2}}.playlist{display:flex;flex-direction:column;gap:8px}.track{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:12px;background:var(--bg);border:1px solid 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.btn.secondary{background:#fff3;color:#fff}.song-row{display:flex;align-items:center;gap:12px;padding:12px}.song-row .t{font-weight:700;font-size:14px}.song-row .a{font-size:12px;color:var(--ink-soft)}.detail-hero{background:linear-gradient(135deg,var(--primary),#ff8a50);color:#fff;border-radius:20px;padding:18px}.demo-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:14px}.theory{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:14px;margin-top:10px}.theory h4{margin:0 0 6px;font-size:14px}.theory p{margin:0 0 8px;font-size:13.5px;color:var(--ink)}.theory ul{margin:0;padding-left:18px;font-size:13px;color:var(--ink-soft)}.bpm-control{display:flex;align-items:center;gap:8px}.bpm-control .val{min-width:44px;text-align:center;font-weight:800;font-size:16px}.reps-count{font-size:22px;font-weight:800}.field{margin-bottom:12px}.field label{display:block;font-size:12.5px;font-weight:700;color:var(--ink-soft);margin-bottom:5px}.field input,.field select{width:100%;padding:11px 12px;border-radius:12px;border:1.5px solid var(--line);background:var(--surface);outline:none}.field input:focus{border-color:var(--primary)}.center{text-align:center}.fade-in{animation:fadeIn .25s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}