:root{--bg:#080604;--gold:#c9a227;--gold-lt:#f0d060;--gold-dim:#6b5218;--cream:#f0e8d0;--text:#c8b890;--dim:#554530;--ok:#3d8f5c;--ok-lt:#72d496;--err:#9e3a28;--err-lt:#e87060}html{-webkit-text-size-adjust:100%}*,:before,:after{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);width:100%;min-height:100dvh;padding:max(1.25rem, env(safe-area-inset-top)) max(.9rem, env(safe-area-inset-right)) calc(4.25rem + env(safe-area-inset-bottom)) max(.9rem, env(safe-area-inset-left));background-image:radial-gradient(110% 55% at 50% -5%,#5a2d0861 0%,#0000 65%),url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)' opacity='0.028'/%3E%3C/svg%3E");flex-direction:column;align-items:center;font-family:JetBrains Mono,monospace;display:flex;overflow-x:hidden}button{touch-action:manipulation}[hidden]{display:none!important}header,.setup-card,.session-bar,.scorebar,.question,.fb-scroll,.fb-hint,.ans-area,.fb-zone,.streak,.key-hint{width:min(100%,980px)}header{text-align:center;margin-bottom:2.2rem}.title-row{justify-content:center;align-items:center;gap:1.2rem;display:flex}.deco{background:linear-gradient(90deg, transparent, var(--gold));width:55px;height:1px}.deco.r{background:linear-gradient(90deg, var(--gold), transparent)}h1{color:var(--gold);letter-spacing:.08em;font-family:Playfair Display,serif;font-size:clamp(2rem,5vw,3.4rem);font-weight:900;line-height:1}.sub{color:var(--dim);letter-spacing:.38em;text-transform:uppercase;margin-top:.45rem;font-size:.6rem}.scorebar{background:#0c0703eb;border:1px solid #c9a2272e;border-radius:18px;justify-content:center;align-items:center;gap:1.6rem;margin-bottom:2rem;padding:.65rem 1.8rem;display:flex;box-shadow:inset 0 1px #c9a22712}.stat{text-align:center;min-width:48px}.stat-v{color:var(--gold);font-size:1.75rem;font-weight:700;line-height:1;display:block}.stat-l{letter-spacing:.22em;text-transform:uppercase;color:var(--dim);margin-top:.15rem;font-size:.57rem;display:block}.sep{background:#c9a22724;width:1px;height:2.4rem}.setup-card{text-align:center;background:linear-gradient(#160c06f5,#0c0703eb),radial-gradient(circle at top,#c9a22714,#0000 60%);border:1px solid #c9a2272e;border-radius:24px;margin-bottom:1.8rem;padding:1.25rem;box-shadow:inset 0 1px #c9a22714,0 16px 40px #00000038}.setup-eye{letter-spacing:.28em;text-transform:uppercase;color:var(--dim);margin-bottom:.65rem;font-size:.58rem}.setup-title{color:var(--cream);margin-bottom:1.15rem;font-size:clamp(1.1rem,4vw,1.55rem);font-weight:700}.setup-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:.8rem;margin-bottom:1rem;display:grid}.setup-option{color:var(--text);text-align:left;background:#120a05bd;border:1px solid #c9a22733;border-radius:18px;padding:1rem;transition:border-color .18s,transform .12s,box-shadow .18s,background .18s}.setup-option strong{color:var(--cream);margin-bottom:.38rem;font-size:.95rem;display:block}.setup-option span{color:var(--dim);font-size:.7rem;line-height:1.5;display:block}.setup-option.active{background:linear-gradient(#c9a2271c,#120a05db);border-color:#c9a22785;transform:translateY(-1px);box-shadow:0 0 0 1px #c9a22724,0 12px 30px #0000002e}.timer-config{flex-direction:column;align-items:center;gap:.55rem;margin:0 0 1rem;display:flex}.timer-label{letter-spacing:.2em;text-transform:uppercase;color:var(--dim);font-size:.6rem}.timer-select{min-width:170px;color:var(--cream);background:#120b06;border:1px solid #c9a22742;border-radius:14px;padding:.72rem .95rem;font-family:JetBrains Mono,monospace;font-size:.9rem}.start-btn,.session-menu-btn{text-transform:uppercase;cursor:pointer;border:1px solid #c9a2274d;font-family:JetBrains Mono,monospace;transition:border-color .18s,background .18s,color .18s,box-shadow .18s}.start-btn{min-width:min(100%,260px);color:var(--gold-lt);letter-spacing:.22em;background:#c9a2271c;border-radius:999px;padding:.85rem 1.2rem;font-size:.78rem;font-weight:700}.start-btn:hover,.session-menu-btn:hover{color:var(--gold-lt);background:#c9a22729;border-color:#c9a2279e;box-shadow:0 0 18px #c9a2271f}.session-bar{flex-wrap:wrap;align-items:center;gap:.7rem;margin-bottom:1rem;display:flex}.session-chip{text-align:center;background:#0c0703d1;border:1px solid #c9a22726;border-radius:16px;flex:150px;min-width:140px;padding:.72rem .9rem}.session-k{letter-spacing:.2em;text-transform:uppercase;color:var(--dim);margin-bottom:.28rem;font-size:.55rem;display:block}.session-v{color:var(--cream);font-size:1rem;font-weight:700;display:block}.session-v.danger{color:var(--err-lt)}.session-menu-btn{color:var(--text);letter-spacing:.14em;background:0 0;border-radius:14px;padding:.8rem 1rem;font-size:.68rem;font-weight:700}.question{text-align:center;margin-bottom:1.6rem}.q-eyebrow{letter-spacing:.3em;text-transform:uppercase;color:var(--dim);margin-bottom:.45rem;font-size:.6rem}.q-main{color:var(--cream);flex-wrap:wrap;justify-content:center;align-items:center;gap:.25rem .55rem;font-size:1.05rem;font-weight:600;display:flex}.q-main em{color:var(--gold-lt);font-style:normal}.play-btn{width:38px;height:38px;color:var(--gold-dim);cursor:pointer;background:#c9a2270f;border:1px solid #c9a22738;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;margin-left:.45rem;font-size:1rem;line-height:1;transition:all .18s;display:inline-flex}.play-btn:hover{color:var(--gold);background:#c9a2271f;border-color:#c9a227a6}.play-btn.ringing{animation:.5s ease-out forwards ring}@keyframes ring{0%{transform:scale(1)}40%{color:var(--gold);border-color:#c9a227d9;transform:scale(1.22);box-shadow:0 0 14px #c9a22752}to{transform:scale(1)}}.fb-scroll{-webkit-overflow-scrolling:touch;overscroll-behavior-x:contain;scroll-behavior:smooth;scroll-snap-type:x proximity;border-radius:22px;margin-bottom:.45rem;padding:.25rem 0 .85rem;overflow-x:auto}.fb-wrap{min-width:700px;padding-right:.5rem}.fret-nums-row{margin-bottom:.45rem;padding-left:42px;display:flex}.fn{text-align:center;color:var(--dim);flex:1;font-size:.57rem}.neck{background:repeating-linear-gradient(#0000 0 6px,#0000000b 6px 7px),linear-gradient(#1b0904 0%,#2b1409 14%,#1e0e06 28%,#33160a 43%,#1b0904 57%,#2a1309 71%,#1f0f06 85%,#2a1308 100%);border-top:3px solid #080402;border-bottom:3px solid #080402;position:relative;box-shadow:inset 0 4px 14px #000000b8,inset 0 -4px 14px #000000b8,0 8px 28px #0009,0 2px 5px #000000d9}.inlay-layer{pointer-events:none;z-index:2;position:absolute;inset:0}.inlay{background:radial-gradient(circle at 40% 35%,#fff8dc33,#d2be8c0d);border:1px solid #d2be8c1f;border-radius:50%;position:absolute}.srow{z-index:3;align-items:center;height:46px;display:flex;position:relative}.slabel{text-align:center;width:42px;color:var(--dim);letter-spacing:.04em;z-index:5;flex-shrink:0;font-size:.67rem;font-weight:700;position:relative}.fcells{flex:1;display:flex;position:relative}.fc{scroll-snap-align:center;flex:1;height:46px;position:relative}.fc.fw:after{content:"";z-index:4;background:linear-gradient(#d2be7d61,#dcc887e0 25%,#ebd791eb 50%,#dcc887e0 75%,#d2be7d61);border-radius:1px;width:2px;position:absolute;top:4px;bottom:4px;right:0;box-shadow:0 0 3px #d2be7d38,1px 0 2px #0009}.fc.nut:after{content:"";z-index:4;background:linear-gradient(90deg,#c8be968c,#f0e6bef2,#c8be96bf);width:6px;position:absolute;top:0;bottom:0;right:0;box-shadow:2px 0 6px #00000080}.pdot{background:radial-gradient(circle at 36% 33%, var(--gold-lt), #cc8010);z-index:10;border-radius:50%;width:25px;height:25px;transition:transform .35s cubic-bezier(.34,1.56,.64,1);position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)scale(0);box-shadow:0 0 0 2px #f0be3047,0 0 10px #f0b43085,0 0 26px #f0b43047}.pdot.on{animation:2.4s ease-in-out infinite dp;transform:translate(-50%,-50%)scale(1)}@keyframes dp{0%,to{box-shadow:0 0 0 2px #f0be3047,0 0 10px #f0b43085,0 0 26px #f0b43047}50%{box-shadow:0 0 0 3px #f0be302e,0 0 16px #f0b43099,0 0 44px #f0b4303d,0 0 68px #f0b4301a}}.mode-row{justify-content:center;align-items:center;margin-bottom:.9rem;display:flex}.mode-lbl{letter-spacing:.28em;text-transform:uppercase;color:var(--dim);margin-right:.7rem;font-size:.58rem}.mbtn{color:var(--dim);letter-spacing:.05em;cursor:pointer;background:0 0;border:1px solid #c9a2272e;padding:.34rem 1.1rem;font-family:JetBrains Mono,monospace;font-size:.73rem;font-weight:600;transition:all .18s}.mbtn+.mbtn{border-left:none}.mbtn.active{color:var(--gold);background:#c9a2271a;border-color:#c9a22780}.mbtn.active+.mbtn{border-left:1px solid #c9a2272e}.mbtn:hover:not(.active){color:var(--text);border-color:#c9a22759}.ans-area{margin-bottom:1.4rem}.ans-eye{text-align:center;letter-spacing:.3em;text-transform:uppercase;color:var(--dim);margin-bottom:.7rem;font-size:.59rem}.note-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:.45rem;width:min(100%,540px);margin-inline:auto;display:grid}.nbtn{width:100%;height:60px;color:var(--cream);cursor:pointer;letter-spacing:.03em;background:linear-gradient(155deg,#1c1109,#100a05);border:1px solid #c9a22738;font-family:JetBrains Mono,monospace;font-size:.96rem;font-weight:700;transition:border-color .15s,transform .1s,box-shadow .15s;position:relative;overflow:hidden}.nbtn:before{content:"";opacity:0;background:linear-gradient(155deg,#c9a2271a,#0000 60%);transition:opacity .18s;position:absolute;inset:0}.nbtn:hover:not(:disabled){border-color:#c9a2279e;transform:translateY(-2px);box-shadow:0 5px 16px #00000085,0 0 8px #c9a22714}.nbtn:hover:not(:disabled):before{opacity:1}.nbtn:active:not(:disabled){transform:translateY(0)}.nbtn:disabled{cursor:default;opacity:.42}.nbtn.is-ok{color:var(--ok-lt)!important;opacity:1!important;border-color:#3a7d52!important;box-shadow:0 0 12px #3c8c5a38!important}.nbtn.is-err{color:var(--err-lt)!important;opacity:.85!important;border-color:#7d3228!important}.fb-zone{flex-direction:column;justify-content:center;align-items:center;gap:.75rem;min-height:72px;margin-bottom:.4rem;display:flex}.fb-msg{letter-spacing:.08em;opacity:0;font-size:.9rem;font-weight:700;transition:opacity .25s,transform .25s;transform:translateY(7px)}.fb-msg.show{opacity:1;transform:translateY(0)}.fb-msg.ok{color:var(--ok-lt)}.fb-msg.err{color:var(--err-lt)}.next-btn{color:var(--gold);letter-spacing:.3em;text-transform:uppercase;cursor:pointer;opacity:0;pointer-events:none;background:0 0;border:1px solid #c9a22752;padding:.55rem 2.4rem;font-family:JetBrains Mono,monospace;font-size:.7rem;font-weight:700;transition:opacity .3s,border-color .2s,background .2s,box-shadow .2s}.next-btn.show{opacity:1;pointer-events:auto}.next-btn:hover{background:#c9a22712;border-color:#c9a227b8;box-shadow:0 0 18px #c9a2271a}.streak{letter-spacing:.14em;color:var(--dim);margin-top:.5rem;font-size:.62rem}.streak strong{color:var(--gold);font-size:.88rem}.key-hint{letter-spacing:.16em;color:var(--dim);opacity:.5;margin-top:1.6rem;font-size:.53rem}.boot-note{width:min(100%,760px);color:var(--cream);text-align:center;background:#1c110973;border:1px solid #c9a22738;border-radius:14px;margin:0 0 1.15rem;padding:.9rem 1rem;font-size:.72rem;line-height:1.55}.boot-note strong{color:var(--gold-lt)}.app-ready .boot-note{display:none}.fb-hint{text-align:center;letter-spacing:.18em;text-transform:uppercase;color:var(--dim);margin-bottom:1.2rem;font-size:.56rem;display:none}@media (width<=760px){body{padding-top:max(1rem, env(safe-area-inset-top));padding-left:max(.8rem, env(safe-area-inset-left));padding-right:max(.8rem, env(safe-area-inset-right))}header{margin-bottom:1.5rem}.title-row{gap:.7rem}.deco{width:32px}.sub{letter-spacing:.28em;font-size:.55rem}.scorebar{gap:.9rem;margin-bottom:1.3rem;padding:.85rem .95rem}.stat{flex:1;min-width:0}.stat-v{font-size:1.45rem}.question{margin-bottom:1.15rem}.q-main{font-size:.98rem;line-height:1.45}.play-btn{width:44px;height:44px;margin-left:0;font-size:1.08rem}.fb-scroll{margin-bottom:.35rem;padding-bottom:.95rem}.fb-wrap{min-width:600px}.fret-nums-row{padding-left:34px}.srow,.fc{height:42px}.slabel{width:34px;font-size:.6rem}.pdot{width:22px;height:22px}.mode-row{flex-wrap:wrap;gap:.5rem}.setup-card{margin-bottom:1.35rem;padding:1rem}.setup-grid{grid-template-columns:1fr}.session-bar{gap:.55rem}.session-chip{flex-basis:calc(50% - .3rem);min-width:0}.session-menu-btn{width:100%;min-height:46px}.mode-lbl{width:100%;margin-right:0}.mbtn{flex:1;min-height:46px;padding:.55rem .7rem}.note-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:.55rem}.nbtn{height:64px;font-size:1rem}.next-btn{letter-spacing:.18em;width:min(100%,320px);min-height:48px;padding-inline:1rem}.fb-hint{display:block}.key-hint{display:none}}@media (width<=520px){h1{font-size:clamp(1.8rem,10vw,2.45rem)}.scorebar{grid-template-columns:repeat(3,minmax(0,1fr));gap:.65rem;display:grid}.session-chip{flex-basis:100%}.sep{display:none}.stat-l{letter-spacing:.16em;font-size:.52rem}.q-eyebrow,.ans-eye{letter-spacing:.2em}.fb-wrap{min-width:540px}.next-btn{width:100%}}:root{--dim:#a18c70}.view-control{justify-content:center;align-items:center;gap:12px;margin:0 0 24px;font-size:13px;display:flex}.view-control select{color:#f0e8d0;font:inherit;background:#211b14;border:1px solid #8d733d;border-radius:5px;min-height:44px;padding:10px 14px}.view-hidden{display:none!important}#pov{width:min(100%,1100px);margin:0 auto 25px}.pov-scroll{overscroll-behavior-x:contain;background:#171311;border:1px solid #62503b;border-radius:8px;overflow:auto}.pov-stage{aspect-ratio:1100/460;width:100%;min-width:0;position:relative}#guitar{cursor:crosshair;width:100%;height:100%;display:block}#positions{pointer-events:none;position:absolute;inset:0}.position{pointer-events:none;background:0 0;border:0;border-radius:50%;width:18px;height:18px;padding:0;position:absolute;transform:translate(-50%,-50%)}.position:focus-visible{outline-offset:4px;background:#bf9138b0;outline:3px solid #fff}.pov-caption,.keyboard-pov{text-align:center;color:#bfae92;margin-top:10px;font-size:11px;line-height:1.7}.last-session{margin-top:16px;font-size:12px;line-height:1.6}button:focus-visible,select:focus-visible{outline-offset:4px;outline:3px solid #fff0b3}@media (width<=600px){.keyboard-pov{display:none}header{margin-bottom:1.25rem}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}#guitar{position:absolute;inset:0}@media (width<=600px) and (orientation:portrait){.pov-stage{min-width:900px}}.next-btn{visibility:hidden}.next-btn.show{visibility:visible}