:root{--background:#fafafa;--foreground:#0a0a0a;--card:#fff;--muted:#f1f1f1;--muted-fg:#737373;--border:#e5e5e5;--border-soft:#f0f0f0;--input:#e5e5e5;--primary:#171717;--primary-fg:#fafafa;--ring:#a1a1a1;--string:#a3a3a3;--shadow-sm:0 1px 2px #0000000d;--pop-shadow:0 10px 30px #0000001a;--radius:8px;--sans:"Geist", "Helvetica Neue", sans-serif;--mono:"Geist Mono", ui-monospace, monospace;--active:#fff}*{box-sizing:border-box}html,body{height:100%;margin:0;padding:0}body{background:var(--background);color:var(--foreground);font-family:var(--sans);-webkit-font-smoothing:antialiased}#root{height:100%}button{cursor:pointer;color:inherit;font-family:inherit}button:focus-visible{outline:2px solid var(--ring);outline-offset:2px}.app{flex-direction:column;height:100dvh;display:flex}body{background-image:url(/bg2.webp);background-position:50%;background-repeat:no-repeat;background-size:cover}.app{background:0 0}.app--home{height:auto;min-height:100dvh}.app--home .main{overflow-y:visible}.app--home .topbar{position:sticky;top:0}.app--player{position:relative}.app--player .topbar{position:absolute;inset:0 0 auto}.app--player .main{padding-top:56px}@media (width<=640px){body{background-position:80% 35%}}.ico{width:16px;height:16px;display:block}.ico--sm{width:13px;height:13px;color:var(--muted-fg)}.topbar{background:color-mix(in srgb, var(--background) 40%, transparent);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);z-index:10;flex:none}.topbar-inner{align-items:center;gap:22px;max-width:1080px;height:56px;margin:0 auto;padding:0 24px;display:flex}.brand{color:inherit;align-items:center;gap:8px;text-decoration:none;display:flex}.logo{background:var(--primary);width:21px;height:21px;color:var(--primary-fg);border-radius:5px;justify-content:center;align-items:center;display:flex}.logo svg{width:12px;height:12px}.brand-name{letter-spacing:-.01em;font-size:14.5px;font-weight:700;font-family:var(--mono)}.topbar-right{align-items:center;gap:10px;margin-left:auto;display:flex}.select{position:relative}.select-trigger{border-radius:var(--radius);border:1px solid var(--input);background:var(--background);height:34px;box-shadow:var(--shadow-sm);align-items:center;gap:9px;max-width:280px;padding:0 10px 0 12px;font-size:13.5px;display:inline-flex}.select-trigger:hover{background:var(--muted)}.select-value{white-space:nowrap;text-overflow:ellipsis;font-weight:500;overflow:hidden}.select-menu{background:var(--card);border:1px solid var(--border);border-radius:calc(var(--radius) + 2px);min-width:250px;box-shadow:var(--pop-shadow);z-index:30;overscroll-behavior:contain;max-height:min(70vh,420px);margin:0;padding:4px;list-style:none;position:absolute;top:calc(100% + 6px);left:auto;right:0;overflow-y:auto}.select-cap{color:var(--muted-fg);padding:5px 9px 4px;font-size:11px;font-weight:500}.select-item{text-align:left;background:0 0;border:none;border-radius:6px;flex-direction:column;align-items:flex-start;gap:1px;width:100%;padding:7px 9px;display:flex}.select-item:hover,.select-item.is-on{background:var(--muted)}.select-item-row{justify-content:space-between;align-items:baseline;gap:8px;width:100%;display:flex}.select-item-title{font-size:13.5px;font-weight:600}.select-item-stars{color:var(--muted-fg);letter-spacing:1px;flex-shrink:0;font-size:10px}.select-item-sub{color:var(--muted-fg);font-size:11.5px}.select-trigger--lang{font-family:var(--mono);padding:0 8px 0 10px}.select-menu--sm{min-width:150px}.main{flex:1;min-height:0;overflow-y:auto}.page{max-width:1080px;margin:0 auto;padding:36px 24px 48px}.title-row{align-items:center;gap:12px;display:flex}.title{letter-spacing:-.03em;margin:0;font-size:28px;font-weight:700;line-height:1.1}.complexity-badge{color:var(--muted-fg);letter-spacing:2px;border:1px solid var(--border);background:var(--muted);border-radius:6px;flex-shrink:0;padding:2px 8px;font-size:12px}.subtitle{color:var(--muted-fg);margin:8px 0 0;font-size:14px;font-weight:400;line-height:1.5}.kbd{font-family:var(--mono);border:1px solid var(--border);background:var(--muted);color:var(--foreground);border-bottom-width:2px;border-radius:5px;padding:0 5px;font-size:10.5px;font-weight:600;display:inline-block}.legend{color:var(--muted-fg);flex-wrap:wrap;align-items:center;gap:14px;margin:22px 0 10px;font-size:12.5px;font-weight:500;display:flex}.leg-item{align-items:center;gap:7px;display:inline-flex}.leg-item .stroke{width:12px;height:10px}.leg-dot{background:var(--border);border-radius:99px;width:3px;height:3px}.leg-note{font-size:12.5px}.tab-surface{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:6px 18px}.section{border-bottom:1px solid var(--border-soft);gap:14px;padding:16px 0 14px;display:flex}.section:last-of-type{border-bottom:none}.sec-gutter{flex-direction:column;flex:none;align-items:center;gap:6px;width:54px;padding-top:13px;display:flex}.sec-label{font-family:var(--mono);color:var(--muted-fg);background:var(--muted);border:1px solid var(--border);border-radius:6px;padding:3px 10px;font-size:12.5px;font-weight:600;transition:all .2s}.section.is-current .sec-label{background:var(--primary);color:var(--primary-fg);border-color:var(--primary)}.sec-rep{font-family:var(--mono);color:var(--muted-fg);font-size:11px;font-weight:600}.sec-body{flex-wrap:wrap;flex:1;align-items:center;row-gap:14px;min-width:0;display:flex}.repbar{border-left:3px solid var(--string);border-right:1.5px solid var(--string);border-radius:1px;flex:none;align-self:stretch;width:7px;margin:8px 6px 8px 0}.repbar--close{border-left:1.5px solid var(--string);border-right:3px solid var(--string);margin:8px 0 8px 6px}.measure{align-items:center;gap:2px;padding:0 2px;display:flex}.barline{background:var(--border);border-radius:1px;flex:none;width:1.5px;height:52px;margin:0 7px}.note{min-width:34px;font-family:var(--mono);background:0 0;border:1px solid #0000;border-radius:8px;flex-direction:column;align-items:center;gap:1px;padding:5px 4px 6px;transition:background .12s,border-color .12s;display:flex}.note:hover{background:var(--muted);border-color:var(--border)}.stroke{width:13px;height:11px;margin-bottom:2px;display:block}.stroke path{fill:none;stroke:var(--string);stroke-width:1.8px;stroke-linecap:square}.fret{color:var(--foreground);font-variant-numeric:tabular-nums;font-size:14.5px;font-weight:600;line-height:1.25}.fret.bot{color:var(--muted-fg)}.strline{background:var(--string);border-radius:1px;width:100%;height:1.5px;margin:1px 0}.note.is-rest{opacity:.55;min-width:26px}.rest-mark{height:100%;color:var(--muted-fg);justify-content:center;align-items:center;font-size:18px;line-height:1;display:flex}.note.is-active{background:var(--primary);border-color:var(--primary)}.note.is-active .rest-mark,.note.is-active .fret,.note.is-active .fret.bot{color:var(--primary-fg)}.note.is-active .strline{background:var(--primary-fg);opacity:.7}.note.is-active .stroke path{stroke:var(--primary-fg)}.playerbar{background:color-mix(in srgb, var(--background) 88%, transparent);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-top:1px solid var(--border);padding:12px 24px;padding-bottom:calc(12px + env(safe-area-inset-bottom));z-index:10;flex:none}.player-inner{align-items:center;gap:14px;max-width:1080px;margin:0 auto;display:flex}.pbtn{border:1px solid #0000;border-radius:999px;flex:none;justify-content:center;align-items:center;width:42px;height:42px;transition:opacity .15s,background .15s,transform 60ms;display:inline-flex}.pbtn:active{transform:scale(.95)}.pbtn .ico{width:16px;height:16px}.pbtn--primary{background:var(--primary);color:var(--primary-fg)}.pbtn--primary:hover{opacity:.9}.pbtn--ghost{background:var(--background);border-color:var(--input);color:var(--muted-fg);width:36px;height:36px;box-shadow:var(--shadow-sm)}.pbtn--ghost:hover{background:var(--muted);color:var(--foreground)}.pbtn--ghost .ico{width:13px;height:13px}.progress{cursor:pointer;flex:1;align-items:center;min-width:80px;height:22px;display:flex;position:relative}.progress:after{content:"";background:var(--muted);border-radius:99px;height:5px;position:absolute;top:50%;left:0;right:0;transform:translateY(-50%)}.progress-fill{background:var(--primary);z-index:1;border-radius:99px;width:0%;height:5px;position:relative}.player-status{flex:none;justify-content:center;align-items:baseline;gap:6px;min-width:64px;display:flex}.status-sec{font-family:var(--mono);font-size:13.5px;font-weight:700}.status-pass,.status-idle{color:var(--muted-fg);font-size:12px;font-weight:500;font-family:var(--mono)}.tabs{background:var(--muted);border-radius:var(--radius);flex:none;align-items:center;gap:2px;height:36px;padding:3px;display:flex}.tab{background:var(--muted);height:28px;color:var(--muted-fg);font-size:12.5px;font-weight:600;font-family:var(--mono);border:none;border-radius:6px;padding:0 12px}.tab:hover{color:var(--foreground)}.tab.is-on{background:var(--active);color:var(--foreground);box-shadow:var(--shadow-sm)}.hero{padding:26px 0 40px}.hero-title{letter-spacing:-.035em;max-width:640px;margin:0;font-size:clamp(30px,5vw,44px);font-weight:800;line-height:1.05}.hero-sub{max-width:580px;color:var(--muted-fg);margin:14px 0 0;font-size:15.5px;line-height:1.6}.hero-actions{flex-wrap:wrap;align-items:center;gap:10px;margin-top:24px;display:flex}.btn{border-radius:var(--radius);justify-content:center;align-items:center;height:40px;padding:0 18px;font-size:14px;font-weight:600;text-decoration:none;transition:opacity .15s,background .15s;display:inline-flex}.btn--primary{background:var(--primary);color:var(--primary-fg)}.btn--primary:hover{opacity:.9}.btn--ghost{background:var(--background);border:1px solid var(--input);color:var(--foreground);box-shadow:var(--shadow-sm)}.btn--ghost:hover{background:var(--muted)}.home-h2{letter-spacing:-.02em;margin:36px 0 14px;font-size:18px;font-weight:700}.song-grid{grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px;display:grid}.song-card{background:var(--card);border:1px solid var(--border);box-shadow:var(--shadow-sm);color:inherit;border-radius:12px;flex-direction:column;gap:3px;padding:18px;text-decoration:none;transition:background .12s,border-color .12s;display:flex;position:relative}.song-card .complexity-badge{position:absolute;top:14px;right:14px}.song-card:hover{background:var(--muted);border-color:var(--ring)}.song-card-title{letter-spacing:-.02em;font-size:17px;font-weight:700}.song-card-sub{color:var(--muted-fg);font-size:12.5px}.song-card-meta{font-family:var(--mono);color:var(--muted-fg);margin-top:12px;font-size:11.5px}.features{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;display:grid}.feature{border:1px solid var(--border);background:var(--card);border-radius:12px;padding:16px 18px}.feature h3{margin:0 0 6px;font-size:13.5px;font-weight:600}.feature p{color:var(--muted-fg);margin:0;font-size:13px;line-height:1.55}.home-footer{color:var(--muted-fg);flex:none;padding:16px 24px;font-size:12.5px}.home-footer-inner{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;max-width:1080px;margin:0 auto;display:flex}.contact-link{color:var(--foreground);text-underline-offset:2px;background:0 0;border:none;flex:none;padding:0;font-size:12.5px;font-weight:600;text-decoration:underline}.contact-link:hover{color:var(--muted-fg)}.contact-dialog{border:1px solid var(--border);background:var(--card);width:min(440px,100vw - 32px);color:var(--foreground);box-shadow:var(--pop-shadow);border-radius:14px;padding:22px}.contact-dialog::backdrop{background:#00000059}.contact-head{justify-content:space-between;align-items:center;margin-bottom:16px;display:flex}.contact-title{letter-spacing:-.02em;margin:0;font-size:18px;font-weight:700}.contact-close{color:var(--muted-fg);background:0 0;border:none;border-radius:6px;padding:4px;font-size:15px;line-height:1}.contact-close:hover{color:var(--foreground);background:var(--muted)}.contact-form{flex-direction:column;gap:10px;display:flex}.contact-input{width:100%;color:var(--foreground);background:var(--background);border:1px solid var(--input);border-radius:var(--radius);padding:10px 12px;font-family:inherit;font-size:14px}.contact-input:focus-visible{outline:2px solid var(--ring);outline-offset:1px}.contact-textarea{resize:vertical;min-height:96px}.contact-form .btn{margin-top:4px}.btn:disabled{opacity:.6;cursor:default}.contact-success{margin:4px 0;font-size:14px;line-height:1.55}.contact-error{color:#b00020;margin:0;font-size:13px}@media (width<=720px){.topbar-inner{gap:12px;padding:0 14px}.brand-name{display:none}.page{padding:24px 14px 32px}.title{font-size:25px}.tab-surface{border-radius:10px;padding:4px 10px}.section{flex-direction:column;align-items:stretch;gap:6px;padding:14px 0 12px}.sec-gutter{flex-direction:row;align-items:center;gap:8px;width:auto;padding-top:0}.sec-label{padding:2px 9px;font-size:12px}.sec-body{row-gap:12px}.measure{flex:100%;gap:1px;padding:0 1px}.note{flex:1 1 0;min-width:0;padding:4px 1px 5px}.note.is-rest{flex:none;min-width:0;padding-left:6px;padding-right:6px}.fret{font-size:13px}.stroke{width:11px;height:9px}.barline{display:none}.playerbar{padding:10px 14px;padding-bottom:calc(10px + env(safe-area-inset-bottom))}.player-inner{flex-wrap:wrap;gap:10px}.progress{flex-basis:100%;order:-1;height:26px}.player-status{flex:1;min-width:0}.tabs{margin-left:auto}}