:root{--bg-color:#121212;--panel-bg:#1e1e1e;--fretboard-bg:#151515;--text-color:#e0e0e0;--accent:#4caf50;--danger:#f44336;--secondary:#2196f3;--warning:#ff9800;--altered:#9c27b0;--fret-wire:#666;--string-color:#888;--inlay-color:#ffffff0f;--marker-bg:#121212;--marker-border:#444;--marker-text:#ccc;--nut-color:#e0e0e0;--ghost-color:#555;--btn-hover-bg:#ffffff0f;--chord-tone:#2196f3;--color-tone:#e91e63;--pent-tone:#ff9800}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;-moz-text-size-adjust:100%;text-size-adjust:100%}body{background:var(--bg-color);color:var(--text-color);font-family:system-ui,-apple-system,sans-serif;overflow-x:hidden}a{color:inherit;text-decoration:none}.lp-nav{z-index:200;-webkit-backdrop-filter:blur(12px);background:#121212e6;border-bottom:1px solid #ffffff14;justify-content:space-between;align-items:center;height:56px;padding:0 18px;display:flex;position:fixed;top:0;left:0;right:0}.lp-nav-logo{align-items:center;gap:8px;font-size:22px;font-weight:900;line-height:1.05;display:flex}.hdr-btn{height:44px;color:var(--text-color);cursor:pointer;opacity:.92;-webkit-user-select:none;user-select:none;background:#ffffff08;border:1px solid #ffffff40;border-radius:12px;align-items:center;gap:8px;padding:0 14px;font-family:inherit;font-size:14px;font-weight:800;transition:opacity .15s,background .15s,transform 50ms;display:inline-flex}.hdr-btn:hover{opacity:1;background:var(--btn-hover-bg)}.hdr-btn:active{transform:translateY(1px)}.hdr-btn-accent{background:var(--accent);border-color:var(--accent);color:#fff;opacity:1}.hdr-btn-accent:hover{filter:brightness(1.1);background:var(--accent)}.hero{text-align:center;flex-direction:column;align-items:center;padding:100px 18px 60px;display:flex;position:relative;overflow:hidden}.hero:before{content:"";pointer-events:none;background-image:linear-gradient(#ffffff09 1px,#0000 1px),linear-gradient(90deg,#ffffff09 1px,#0000 1px);background-size:46px 32px;position:absolute;inset:0;-webkit-mask-image:radial-gradient(80% 55%,#000 20%,#0000 100%);mask-image:radial-gradient(80% 55%,#000 20%,#0000 100%)}.hero-eyebrow{letter-spacing:2px;text-transform:uppercase;color:var(--accent);opacity:.9;margin-bottom:14px;font-size:11px;font-weight:700;animation:.5s both fadeUp;position:relative}.hero-headline{font-size:clamp(32px,7vw,64px);font-weight:900;line-height:1.06;animation:.5s 80ms both fadeUp;position:relative}.hero-sub{color:#e0e0e099;max-width:500px;margin-top:14px;font-size:clamp(14px,2vw,17px);line-height:1.55;animation:.5s .16s both fadeUp;position:relative}.hero-actions{flex-wrap:wrap;justify-content:center;gap:10px;margin-top:24px;animation:.5s .22s both fadeUp;display:flex;position:relative}.action-btn{background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:12px;align-items:center;gap:8px;padding:10px 14px;font-family:inherit;font-size:14px;font-weight:900;transition:filter .15s,transform 50ms;display:inline-flex}.action-btn:hover{filter:brightness(1.1)}.action-btn:active{transform:translateY(1px)}.action-btn.outline{color:var(--text-color);opacity:.92;background:0 0;border:1px solid #ffffff40;font-weight:800}.action-btn.outline:hover{opacity:1;background:var(--btn-hover-bg);filter:none}.hero-board-wrap{z-index:1;width:100%;max-width:800px;margin-top:44px;animation:.6s .3s both fadeUp;position:relative}.mock-chrome{background:var(--panel-bg);border:1px solid var(--fret-wire);border-bottom:none;border-radius:12px 12px 0 0;justify-content:space-between;align-items:center;gap:10px;padding:10px 14px;display:flex}.mock-app-title{align-items:center;gap:8px;font-size:18px;font-weight:900;display:flex}.mock-header-btns{gap:8px;display:flex}.mock-hdr-btn{height:36px;color:var(--text-color);opacity:.8;background:#ffffff08;border:1px solid #ffffff40;border-radius:12px;align-items:center;gap:6px;padding:0 12px;font-size:12px;font-weight:800;display:inline-flex}.mock-controls{background:var(--panel-bg);border:1px solid var(--fret-wire);border-top:none;border-bottom:none;flex-wrap:wrap;align-items:flex-end;gap:10px;padding:10px 12px;display:flex}.mock-label{opacity:.85;flex-direction:column;font-size:11px;font-weight:700;display:flex}.mock-select{border:1px solid var(--fret-wire);background:var(--bg-color);color:var(--text-color);border-radius:10px;margin-top:4px;padding:7px 10px;font-family:inherit;font-size:13px}.fretboard-container{background:var(--panel-bg);border:1px solid var(--fret-wire);border-top:2px solid var(--fret-wire);padding:8px 0;overflow-x:auto}.fretboard-wrap{justify-content:center;min-width:min-content;display:flex}.fretboard{border-collapse:collapse;table-layout:fixed;width:max-content}.fretboard .fret-num{color:var(--accent);text-align:center;width:46px;padding:4px 0 8px;font-size:14px;font-weight:700}.fretboard .string-label{width:40px;color:var(--accent);background:var(--panel-bg);border-right:2px solid var(--fret-wire);text-align:center;z-index:10;font-size:14px;font-weight:700;line-height:32px;position:sticky;left:0}.fretboard .note-cell{border-right:2px solid var(--fret-wire);width:46px;height:32px;line-height:0;position:relative}.fretboard .note-cell.fret-odd{background-color:#ffffff0a}.fretboard .note-cell.nut-line{border-right:5px solid var(--nut-color)}.string-line{background:var(--string-color);z-index:1;pointer-events:none;position:absolute;top:50%;left:0;right:0;transform:translateY(-50%)}.note-marker{z-index:5;background:var(--marker-bg);border:1px solid var(--marker-border);width:28px;height:28px;color:var(--marker-text);text-shadow:0 1px 3px #000000b3;border-radius:50%;flex-direction:column;justify-content:center;align-items:center;margin:0 auto;font-weight:700;display:flex;position:relative}.note-marker .interval{margin-bottom:1px;font-size:11px;line-height:1}.note-marker .note-name{opacity:.8;font-size:10px;line-height:1}.degree-1 .note-marker{color:#fff;background:#4caf5080;border-color:#66bb6a}.degree-b3 .note-marker{color:#fff;background:#ff980080;border-color:#ffb74d}.degree-4 .note-marker,.degree-5 .note-marker{color:#fff;background:#2196f380;border-color:#64b5f6}.degree-b7 .note-marker{color:#fff;background:#e91e6380;border-color:#f06292}.degree-b5 .note-marker{color:#fff;background:#9c27b080;border-color:#ba68c8}.degree-7 .note-marker{color:#fff;background:#e91e6380;border-color:#f06292}.root-note .note-marker{background:var(--accent);color:#fff;border-color:var(--accent)}@keyframes rootPulse{0%,to{box-shadow:0 0 6px #4caf5066}50%{box-shadow:0 0 14px #4caf50d9}}.root-note .note-marker{animation:2.2s ease-in-out infinite rootPulse}.fret-dot{pointer-events:none;z-index:1;background:#ffffff38;border-radius:50%;width:8px;height:8px;position:absolute;bottom:-4px;left:50%;transform:translate(-50%)}.legend-row{background:var(--panel-bg);border:1px solid var(--fret-wire);opacity:.9;border-top:none;border-radius:0 0 12px 12px;flex-wrap:wrap;align-items:center;gap:16px;margin-top:0;padding:10px 12px;font-size:13px;line-height:1.35;display:flex}.legend-dot{align-items:center;gap:6px;font-size:12px;display:inline-flex}.ldot{border-radius:50%;flex-shrink:0;width:16px;height:16px}.lp-section{padding:72px 18px}.lp-section-alt{background:var(--panel-bg);border-top:1px solid #ffffff14;border-bottom:1px solid #ffffff14}.lp-inner{max-width:960px;margin:0 auto}.lp-section-tag{letter-spacing:2px;text-transform:uppercase;color:var(--accent);opacity:.9;margin-bottom:10px;font-size:11px;font-weight:700}.lp-section-title{margin-bottom:12px;font-size:clamp(26px,4.5vw,42px);font-weight:900;line-height:1.07}.lp-section-body{color:#e0e0e099;max-width:500px;font-size:15px;line-height:1.6}.modes-grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px;margin-top:36px;display:grid}.mode-card{background:var(--bg-color);border:1px solid var(--fret-wire);border-top:3px solid var(--card-top,var(--accent));border-radius:12px;padding:18px 16px;transition:transform .2s,box-shadow .2s}.mode-card:hover{transform:translateY(-3px);box-shadow:0 8px 24px #0006}.mode-card-icon{margin-bottom:9px;font-size:24px;display:block}.mode-card-name{color:var(--card-top,var(--accent));margin-bottom:6px;font-size:16px;font-weight:900}.mode-card-desc{color:#e0e0e099;font-size:13px;line-height:1.5}.features-grid{grid-template-columns:repeat(auto-fit,minmax(270px,1fr));gap:24px;margin-top:36px;display:grid}.feature-item{align-items:flex-start;gap:14px;display:flex}.feature-icon-wrap{border:1px solid var(--fret-wire);background:#4caf5014;border-radius:10px;flex-shrink:0;justify-content:center;align-items:center;width:40px;height:40px;font-size:18px;display:flex}.feature-text h3{margin-bottom:4px;font-size:14px;font-weight:800}.feature-text p{color:#e0e0e099;font-size:13px;line-height:1.5}.jam-layout{grid-template-columns:1fr 1fr;align-items:center;gap:44px;margin-top:36px;display:grid}@media (width<=680px){.jam-layout{grid-template-columns:1fr}}.jam-visual{background:var(--bg-color);border:1px solid var(--fret-wire);border-radius:12px;padding:14px}.jam-label{letter-spacing:1px;text-transform:uppercase;color:#e0e0e080;margin-bottom:7px;font-size:11px;font-weight:700}.jam-song-row{background:var(--panel-bg);border:1px solid var(--fret-wire);border-radius:10px;align-items:center;gap:10px;margin-bottom:14px;padding:9px 12px;display:flex}.jam-play-circle{background:var(--secondary);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:30px;height:30px;font-size:11px;display:flex}.jam-song-name{font-size:13px;font-weight:800}.jam-song-sub{color:#e0e0e080;margin-top:2px;font-size:11px}.jam-chord-row{flex-wrap:wrap;gap:6px;margin-bottom:14px;display:flex}.jam-chord{border:1px solid var(--fret-wire);color:#e0e0e073;border-radius:8px;padding:5px 10px;font-size:12px;font-weight:800}.jam-chord.is-active{color:#e91e63;background:#e91e6333;border-color:#e91e6380}.jam-chord.is-next{color:var(--warning);background:#ff98001a;border-color:#ff980059}.jam-scale-row{flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:10px;display:flex}.jam-scale-name{color:#e91e63;font-size:19px;font-weight:900}.jam-scale-sub{color:#e0e0e080;font-size:12px}.stats-layout{grid-template-columns:1fr 1fr;align-items:center;gap:44px;margin-top:36px;display:grid}@media (width<=680px){.stats-layout{grid-template-columns:1fr}}.stats-grid{grid-template-columns:1fr 1fr;gap:12px;display:grid}.stat-card{background:var(--panel-bg);text-align:center;border:1px solid #ffffff1f;border-radius:12px;padding:14px 12px;box-shadow:0 2px 8px #00000026}.stat-value{color:var(--accent);font-size:26px;font-weight:700}.stat-label{opacity:.7;margin-top:4px;font-size:11px}.stat-bar-wrap{margin-top:8px}.stat-bar-labels{opacity:.6;justify-content:space-between;margin-bottom:4px;font-size:11px;display:flex}.stat-bar-track{background:#ffffff14;border-radius:5px;height:5px;overflow:hidden}.stat-bar-fill{background:var(--accent);border-radius:5px;height:100%;transition:width 1s}.cta-section{text-align:center;padding:90px 18px;position:relative;overflow:hidden}.cta-section:before{content:"";pointer-events:none;background:radial-gradient(#4caf5012 0%,#0000 70%);width:600px;height:300px;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.lp-footer{border-top:1px solid #ffffff14;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;padding:20px 18px;display:flex}.lp-footer-logo{align-items:center;gap:7px;font-size:18px;font-weight:900;display:flex}.lp-footer-copy{opacity:.4;font-size:12px}@keyframes fadeUp{0%{opacity:0;transform:translateY(18px)}to{opacity:1;transform:translateY(0)}}.reveal{opacity:0;transition:opacity .5s,transform .5s;transform:translateY(20px)}.reveal.visible{opacity:1;transform:none}.reveal-stagger>*{opacity:0;transform:translateY(18px)}.reveal-stagger.visible>:first-child{opacity:1;transition:opacity .4s,transform .4s;transform:none}.reveal-stagger.visible>:nth-child(2){opacity:1;transition:opacity .4s 70ms,transform .4s 70ms;transform:none}.reveal-stagger.visible>:nth-child(3){opacity:1;transition:opacity .4s .14s,transform .4s .14s;transform:none}.reveal-stagger.visible>:nth-child(4){opacity:1;transition:opacity .4s .21s,transform .4s .21s;transform:none}@media (width<=520px){.mock-controls{display:none}}@media (width<=420px){.hero{padding-top:78px}.mock-header-btns .mock-hdr-btn:not(:first-child){display:none}}