:root{color:#17201c;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;--accent:#0f8f83;--accent-strong:#09746b;--ink:#17201c;--muted:#68716c;--line:#dfe5df;--surface:#fff;--soft:#eef3f0;--danger:#b42318;--shadow:0 18px 45px #17201c14;background:#f7f8f5;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,SF Pro Text,Segoe UI,sans-serif}*{box-sizing:border-box}body{min-width:320px;min-height:100vh;margin:0}button,input,select{font:inherit}button{-webkit-tap-highlight-color:transparent}.hidden-input{display:none}.login-shell{background:linear-gradient(130deg,#0f8f8317,#0000 45%),#f7f8f5;place-items:center;min-height:100vh;padding:24px;display:grid}.login-card{background:var(--surface);border:1px solid var(--line);width:min(420px,100vw - 48px);max-width:100%;box-shadow:var(--shadow);border-radius:18px;padding:28px}.brand-mark{color:#fff;background:var(--accent);border-radius:14px;place-items:center;width:48px;height:48px;display:grid}.brand-mark.small{border-radius:12px;flex:none;width:40px;height:40px}.login-card h1{margin:20px 0 8px;font-size:30px;line-height:1.15}.login-card p,.topbar p,.sidebar-title span,.track-main span,.player-main span,.status-line,.setup-note{color:var(--muted)}.login-form{gap:14px;margin-top:24px;display:grid}.login-form label{color:#35403b;gap:8px;font-size:14px;display:grid}.login-form input,.new-group input,.search-box input{border:1px solid var(--line);width:100%;min-height:48px;color:var(--ink);background:#fbfcfb;border-radius:12px;outline:none;padding:0 14px}.login-form input:focus,.new-group input:focus,.search-box:focus-within{border-color:var(--accent);box-shadow:0 0 0 4px #0f8f831f}.primary-button,.icon-button,.new-group button,.play-button,.row-tools button,.track-tools button,.upload-panel button{border:1px solid var(--line);background:var(--surface);min-height:44px;color:var(--ink);cursor:pointer;border-radius:12px;justify-content:center;align-items:center;gap:8px;display:inline-flex}.primary-button,.primary-touch{border-color:var(--accent);background:var(--accent);color:#fff;font-weight:700}.primary-button{width:100%}.spin{animation:.9s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.setup-note,.status-line{margin-top:14px;font-size:13px;line-height:1.45}.setup-note{color:#594900;background:#fff8d6;border:1px solid #f2c94c;border-radius:12px;padding:12px}.app-shell{min-height:100vh;padding-bottom:calc(94px + env(safe-area-inset-bottom));grid-template-columns:300px minmax(0,1fr);display:grid}.sidebar{border-right:1px solid var(--line);background:#fff;align-self:start;min-height:100vh;padding:22px 16px;position:sticky;top:0}.sidebar-title{align-items:center;gap:12px;margin-bottom:22px;display:flex}.sidebar-title strong,.player-main strong,.track-main strong{line-height:1.25;display:block}.sidebar-title span{margin-top:3px;font-size:12px;display:block}.quota-panel{border:1px solid var(--line);background:#fbfcfb;border-radius:12px;gap:9px;margin:0 0 18px;padding:12px;display:grid}.quota-head,.quota-meta{justify-content:space-between;align-items:center;gap:10px;min-width:0;display:flex}.quota-head span,.quota-meta span{text-overflow:ellipsis;white-space:nowrap;min-width:0;overflow:hidden}.quota-head span{color:#35403b;font-size:13px;font-weight:700}.quota-head strong{color:var(--accent-strong);font-size:14px}.quota-bar{background:#dce5e0;border-radius:999px;height:7px;overflow:hidden}.quota-bar i{border-radius:inherit;background:var(--accent);height:100%;display:block}.quota-meta{color:var(--muted);font-size:12px}.mobile-quota{display:none}.group-list{gap:8px;display:grid}.group-row{gap:6px;display:grid}.group-tab{color:#40504a;cursor:pointer;background:0 0;border:0;border-radius:12px;justify-content:flex-start;align-items:center;gap:9px;width:100%;min-height:46px;padding:0 10px;display:flex}.group-tab.active{color:var(--accent-strong);background:#e5f4f1;font-weight:750}.group-tab span{color:inherit;opacity:.7;margin-left:auto;font-size:12px}.row-tools{gap:6px;padding-left:28px;display:flex}.row-tools button{border-radius:10px;min-height:34px;padding:0 9px;font-size:12px}.new-group{grid-template-columns:minmax(0,1fr) 48px;gap:8px;margin-top:18px;display:grid}.content{min-width:0;padding:24px clamp(18px,3vw,42px) 28px}.topbar{justify-content:space-between;align-items:center;gap:18px;margin-bottom:16px;display:flex}.topbar h1{margin:0;font-size:28px;line-height:1.1}.topbar p{margin:6px 0 0;font-size:13px}.top-actions{gap:8px;display:flex}.icon-button{padding:0 13px}.mobile-groups{display:none}.search-box{border:1px solid var(--line);background:#fff;border-radius:14px;align-items:center;gap:9px;height:50px;margin-bottom:18px;padding:0 13px;display:flex}.search-box input{height:46px;min-height:0;box-shadow:none;border:0;padding:0}.library-list{gap:14px;display:grid}.group-section{border:1px solid var(--line);background:#ffffffb8;border-radius:14px;overflow:hidden}.group-heading{cursor:pointer;width:100%;min-height:52px;color:var(--ink);background:#fff;border:0;align-items:center;gap:9px;padding:0 14px;font-weight:750;display:flex}.group-heading small{color:var(--muted);margin-left:auto}.track-list{display:grid}.track-row{border-top:1px solid var(--line);grid-template-columns:48px minmax(0,1fr) auto;align-items:center;gap:12px;padding:12px 14px;display:grid}.track-row.selected{background:#f0faf7}.play-button{width:44px;height:44px;color:var(--accent-strong);flex:none;padding:0}.play-button.large{color:#fff;background:var(--accent);border-color:var(--accent);border-radius:16px;width:54px;height:54px}.track-main{text-align:left;cursor:pointer;background:0 0;border:0;gap:7px;min-width:0;padding:0;display:grid}.track-main strong,.player-main strong{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.track-main span{align-items:center;gap:5px;font-size:12px;display:flex}.mini-progress,.upload-progress{background:#dce5e0;border-radius:999px;height:5px;overflow:hidden}.mini-progress i,.upload-progress i{background:var(--accent);border-radius:inherit;height:100%;display:block}.track-tools{align-items:center;gap:6px;display:flex}.track-tools select,.speed-select{border:1px solid var(--line);min-height:40px;color:var(--ink);background:#fff;border-radius:11px;padding:0 8px}.track-tools button{border-radius:10px;min-width:38px;min-height:38px}.empty-state{min-height:88px;color:var(--muted);border-top:1px solid var(--line);justify-content:center;align-items:center;gap:8px;display:flex}.upload-panel{left:50%;bottom:calc(110px + env(safe-area-inset-bottom));border:1px solid var(--line);width:min(560px,100vw - 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