:root{
  --bg:#050807; --surface:#0b130f; --surface2:#101c15; --green:#00E676; --green2:#00C853; --dark:#003D25;
  --text:#fff; --text2:#A3AAA6; --red:#FF6B6B; --warn:#FFD23F;
  --c-vocals:#00E676; --c-drums:#2BB5FF; --c-bass:#FF9F1C; --c-other:#C04CFF;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;min-height:100%}
body{min-height:100vh;min-height:100dvh}
#app{max-width:620px;margin:0 auto;min-height:100vh;min-height:100dvh;padding:0 16px;padding-bottom:env(safe-area-inset-bottom)}
[hidden]{display:none!important}
.screen{display:flex;flex-direction:column;min-height:100vh;min-height:100dvh;padding:12px 0 18px;animation:in .35s ease}
.screen.center{align-items:center;justify-content:center;text-align:center;gap:6px}
@keyframes in{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
h1,h2,h3,p{margin:0}
.g{color:var(--green)}
.muted{color:var(--text2)} .small{font-size:12.5px} .grow{flex:1;min-width:0}
.spacer{flex:1;min-height:12px}
.label{font-size:11.5px;letter-spacing:.12em;color:var(--text2);margin:16px 2px 8px}
.brand{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:15px}
.home-top{height:40px;display:flex;align-items:center}
.hero{display:flex;flex-direction:column;align-items:center;text-align:center;padding:28px 0 10px}
.hero h1{font-size:34px;font-weight:800;margin:18px 0 8px}
.sub{color:var(--text2);line-height:1.5;margin-bottom:22px}
.hint{color:var(--text2);font-size:13px;margin-top:12px}
.wave{display:flex;align-items:center;gap:5px;height:84px}
.wave i{display:block;width:7px;border-radius:4px;background:var(--green);height:var(--h);animation:bar 2.4s ease-in-out infinite;animation-delay:var(--d);transform-origin:center}
@keyframes bar{0%,100%{transform:scaleY(.72)}50%{transform:scaleY(1)}}
.features{list-style:none;padding:0;margin:20px 0 10px;display:grid;grid-template-columns:1fr 1fr;gap:10px}
.features li{background:var(--surface);border:1px solid var(--dark);border-radius:16px;padding:14px;display:flex;flex-direction:column;gap:4px}
.features b{color:var(--green)} .features span{color:var(--text2);font-size:13px;line-height:1.35}
.note{background:var(--surface);border:1px solid var(--dark);border-radius:12px;padding:10px 12px;font-size:13px;color:var(--text2);margin:6px 0}
.foot{margin-top:auto;padding-top:22px;font-size:12px;color:var(--text2);line-height:1.6;text-align:center}
.foot a{color:var(--green)}

.btn{font:inherit;cursor:pointer;border:0;border-radius:999px;color:var(--text);background:transparent;display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:0 22px;height:48px;font-weight:600;transition:transform .12s,opacity .2s,background .2s}
.btn:active{transform:scale(.97)}
.btn:disabled{opacity:.4;cursor:default}
.btn.primary{background:var(--green);color:var(--bg)}
.btn.big{height:56px;padding:0 34px;font-size:17px}
.btn.wide{width:100%;height:54px;font-size:16px}
.btn.outline{border:1.5px solid var(--green)}
.btn.pill{height:34px;padding:0 14px;font-size:13px;gap:6px;color:#fff;border:1px solid var(--green);background:linear-gradient(90deg,var(--dark),#0a5a37)}
.btn.pill.karaoke{background:transparent;border-color:var(--dark)}
.btn.pill.karaoke.on{background:var(--green);color:var(--bg);border-color:var(--green)}
.icon{font:inherit;cursor:pointer;background:transparent;border:0;color:var(--text);width:44px;height:44px;border-radius:50%;font-size:20px}
.icon.on{color:var(--green)}
.icon:hover{background:var(--surface)}
.bar{display:flex;align-items:center;gap:6px;height:52px}
.bar h2{font-size:20px}

.song,.songrow{display:flex;align-items:center;gap:12px}
.songrow{margin:2px 4px 10px}
.song{margin-top:6px}
.song-name{font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.disc{width:46px;height:46px;border-radius:13px;background:linear-gradient(180deg,var(--dark),#015a36);display:grid;place-items:center;color:var(--green);font-size:24px}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{font:inherit;cursor:pointer;border:1px solid var(--dark);background:transparent;color:var(--text);border-radius:999px;height:36px;padding:0 16px;font-size:14px}
.chip.on{background:var(--green);color:var(--bg);border-color:var(--green);font-weight:600}
.tiles{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:12px 0}
.tile{cursor:pointer;text-align:left;font:inherit;color:var(--text);background:var(--surface);border:1.5px solid var(--dark);border-radius:18px;padding:14px;min-height:112px;display:flex;flex-direction:column;gap:6px;position:relative;transition:border-color .2s,background .2s}
.tile.on{border-color:var(--c);background:color-mix(in srgb,var(--c) 10%,var(--surface))}
.tile .ic{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:color-mix(in srgb,var(--c) 22%,transparent);font-size:18px}
.tile b{font-size:16px} .tile span{font-size:12.5px;color:var(--text2)}
.tile .ck{position:absolute;top:12px;right:12px;width:22px;height:22px;border-radius:50%;border:1.5px solid var(--dark);display:grid;place-items:center;font-size:13px;color:transparent}
.tile.on .ck{background:var(--c);border-color:var(--c);color:var(--bg)}
.adv{margin:8px 0;background:var(--surface);border:1px solid var(--dark);border-radius:14px;padding:10px 14px}
.adv summary{cursor:pointer;color:var(--text2);font-size:14px}
.row{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:12px;font-size:14px}
select{font:inherit;background:var(--surface2);color:var(--text);border:1px solid var(--dark);border-radius:10px;padding:8px 10px}
input[type=checkbox]{accent-color:var(--green);width:20px;height:20px}
.warn{color:var(--warn);font-size:13px;margin:8px 2px}

.ring{position:relative;width:170px;height:170px;margin-bottom:10px}
.ring svg{transform:rotate(-90deg);width:100%;height:100%}
.ring circle{fill:none;stroke-width:8}
.ring .track{stroke:var(--dark)} .ring .arc{stroke:var(--green);stroke-linecap:round;stroke-dasharray:326.7;stroke-dashoffset:326.7;transition:stroke-dashoffset .4s}
.pct{position:absolute;inset:0;display:grid;place-items:center;font-size:30px;font-weight:700}
.bar-wrap{width:min(280px,80%);height:6px;border-radius:3px;background:var(--dark);overflow:hidden;margin:8px 0}
.bar-fill{height:100%;width:0;background:var(--green);transition:width .2s}
#cancel{margin-top:18px}

.strips{display:flex;flex-direction:column;gap:10px}
.strip{background:var(--surface);border:1px solid var(--dark);border-radius:18px;padding:10px 12px 8px;--c:var(--green)}
.strip .top{display:flex;align-items:center;gap:8px}
.strip .ic{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;font-size:14px;background:color-mix(in srgb,var(--c) 22%,transparent)}
.strip .nm{flex:1;font-weight:600;font-size:15px}
.strip .st{font-size:10px;font-weight:700;color:var(--c)}
.strip.off .st{color:var(--text2)}
.strip canvas{width:100%;height:46px;display:block;margin:6px 0;cursor:pointer;border-radius:8px}
.strip .meter{height:3px;border-radius:2px;background:var(--dark);overflow:hidden;margin-bottom:4px}
.strip .meter i{display:block;height:100%;width:0;background:var(--c)}
.strip .ctl{display:flex;align-items:center;gap:8px}
.strip input[type=range]{flex:1;accent-color:var(--c)}
.strip .vol{width:38px;text-align:right;font-size:12px;color:var(--text2)}
.tg{font:inherit;cursor:pointer;width:42px;height:34px;border-radius:10px;background:transparent;border:1px solid var(--dark);color:var(--text);font-weight:700;font-size:13px}
.tg.s.on{background:var(--c);border-color:var(--c);color:var(--bg)}
.tg.m.on{background:var(--red);border-color:var(--red);color:var(--bg)}
.transport{margin-top:auto;padding-top:12px;position:sticky;bottom:0;background:linear-gradient(transparent,var(--bg) 14px);padding-bottom:6px}
.transport>*{background:var(--surface);border:1px solid var(--dark)}
.seekrow{display:flex;align-items:center;gap:10px;padding:8px 14px 0;border-radius:18px 18px 0 0;border-bottom:0;font-size:13px;color:var(--text2)}
.seekrow input{flex:1;accent-color:var(--green)}
.controls{display:flex;align-items:center;justify-content:center;gap:10px;padding:2px 10px 8px;border-radius:0 0 18px 18px;border-top:0}
.controls .ghost{width:44px}
.play{width:56px;height:56px;border-radius:50%;border:0;background:var(--green);color:var(--bg);font-size:22px;cursor:pointer}

dialog{background:var(--surface);color:var(--text);border:1px solid var(--dark);border-radius:22px;padding:20px;width:min(420px,calc(100vw - 32px))}
dialog::backdrop{background:rgba(0,0,0,.65)}
dialog h3{font-size:19px;margin-bottom:2px}
.exp-list{display:flex;flex-direction:column;gap:8px}
.exp-item{display:flex;align-items:center;gap:12px;padding:10px 12px;border:1px solid var(--dark);border-radius:14px;cursor:pointer}
.exp-item .dot{width:10px;height:10px;border-radius:50%;background:var(--c)}
.exp-item span{flex:1}
.dlg-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:14px}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:var(--surface2);border:1px solid var(--green);padding:10px 16px;border-radius:12px;font-size:14px;max-width:calc(100vw - 32px);z-index:10}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

/* ---- home polish + app promo ---- */
body{background:radial-gradient(900px 420px at 50% -80px,#0b2a1b 0%,transparent 70%),var(--bg)}
.home-top{justify-content:space-between}
.getapp{color:var(--bg);background:var(--green);font-weight:700;font-size:13px;text-decoration:none;border-radius:999px;padding:8px 14px}
.hero h1{background:linear-gradient(180deg,#fff,#bfe9d3);-webkit-background-clip:text;background-clip:text}
.hero h1 .g{color:var(--green)}
#pick-btn{box-shadow:0 8px 30px rgba(0,230,118,.28)}
.features li{background:linear-gradient(160deg,var(--surface2),var(--surface))}
.sec{font-size:18px;margin:26px 2px 12px}
.steps{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.steps li{display:flex;gap:14px;align-items:center;background:var(--surface);border:1px solid var(--dark);border-radius:16px;padding:12px 14px}
.steps i{flex:none;width:32px;height:32px;border-radius:50%;background:var(--green);color:var(--bg);display:grid;place-items:center;font-style:normal;font-weight:800}
.steps div{display:flex;flex-direction:column;gap:2px} .steps span{color:var(--text2);font-size:13px}
.promo{position:relative;overflow:hidden;margin:28px 0 4px;padding:22px 18px 20px;border-radius:22px;border:1px solid #0a5a37;background:linear-gradient(150deg,#06301f,#0a1a12 60%)}
.promo-glow{position:absolute;right:-60px;top:-60px;width:200px;height:200px;border-radius:50%;background:radial-gradient(circle,rgba(0,230,118,.35),transparent 70%)}
.promo>*:not(.promo-glow){position:relative}
.promo .tag{display:inline-block;font-size:11px;letter-spacing:.14em;font-weight:700;color:var(--green);background:rgba(0,230,118,.12);border-radius:999px;padding:5px 10px}
.promo h2{font-size:22px;margin:12px 0 6px}
.promo p{color:var(--text2);line-height:1.5}
.ticks{list-style:none;padding:0;margin:14px 0 18px;display:flex;flex-direction:column;gap:9px;font-size:14.5px}
.ticks li{padding-left:26px;position:relative}
.ticks li::before{content:"\2713";position:absolute;left:0;top:0;width:18px;height:18px;border-radius:50%;background:var(--green);color:var(--bg);font-size:11px;font-weight:800;display:grid;place-items:center;top:2px}
.gplay{display:inline-flex;align-items:center;gap:10px;background:#000;border:1.5px solid #5f6b64;border-radius:12px;padding:8px 18px 8px 14px;color:#fff;text-decoration:none;transition:transform .12s,border-color .2s}
.gplay:hover{border-color:var(--green)} .gplay:active{transform:scale(.97)}
.gplay span{display:flex;flex-direction:column;line-height:1.1;text-align:left}
.gplay small{font-size:10px;letter-spacing:.08em;color:#c9d1cc} .gplay b{font-size:19px;font-weight:600}
.faq{background:var(--surface);border:1px solid var(--dark);border-radius:14px;padding:12px 14px;margin-bottom:8px}
.faq summary{cursor:pointer;font-weight:600;font-size:14.5px}
.faq p{color:var(--text2);font-size:13.5px;line-height:1.5;margin-top:8px}
.miniad{display:flex;align-items:center;gap:12px;width:100%;max-width:420px;margin-top:18px;text-decoration:none;color:var(--text);text-align:left;background:linear-gradient(90deg,#06301f,#0a1a12);border:1px solid #0a5a37;border-radius:16px;padding:10px 14px}
.miniad span{flex:1;display:flex;flex-direction:column;gap:2px;font-size:14px} .miniad small{color:var(--text2);font-size:12px}
.miniad em{font-style:normal;color:var(--green);font-size:24px}
.miniad img{border-radius:10px}
dialog .miniad{margin-top:12px;max-width:none}