:root{font-family:Inter,"Segoe UI","Microsoft YaHei",sans-serif;font-size:16px;color:#243432;background:#f5f7f8;--accent:#12775f;--ink:#18342e;--muted:#667572;--line:#e1e8e5;--wash:#e8f4ee}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a,input,select{touch-action:manipulation}button{border:0;min-height:44px;border-radius:10px;padding:10px 18px;background:var(--accent);color:#fff;font-weight:600;cursor:pointer;transition:background .15s,box-shadow .15s}button:hover{filter:brightness(.95)}button.secondary{background:#fff;color:#405951;border:1px solid #d7e2dd}button.danger{background:#c0392b;color:#fff}button.danger:hover{filter:brightness(.95)}button.quiet{background:transparent;color:#62756e;border:0;padding:8px 12px}button:disabled{opacity:.45;cursor:not-allowed}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #bd8416;outline-offset:3px}h1,h2,h3,p{margin-top:0}h1{font-size:23px;letter-spacing:.02em}h2{font-size:30px;line-height:1.3;margin-bottom:8px;letter-spacing:-.04em}h3{font-size:18px;margin-bottom:14px}p{line-height:1.65}.muted,small{font-size:14px;color:var(--muted);line-height:1.65}.eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;font-weight:700;color:var(--accent);margin-bottom:10px}.card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px;margin:22px 0}.flex,.toolbar,.section-head{display:flex;gap:12px;align-items:center;flex-wrap:wrap}.section-head{justify-content:space-between;margin:26px 0 20px}.toolbar{margin:22px 0}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px}.grid .card{margin:0}.panel{max-width:1220px;margin:auto}.panel>.section-head:first-child{margin-top:0}.sidebar{position:fixed;inset:0 auto 0 0;width:230px;background:#172d29;color:#fff;padding:34px 24px;z-index:5}.brand{display:flex;gap:12px;align-items:center}.brand-mark{width:40px;height:40px;border-radius:13px;background:#c3edce;color:#174c35;display:grid;place-items:center}.brand-mark svg{width:24px;height:24px}.brand h1{font-size:20px;margin:0}.brand small{color:#a1b9ae;font-size:12px;letter-spacing:.08em}.sidebar #logout{position:absolute;bottom:28px;left:24px;right:24px;background:#243d35;color:#d5e8de;border:1px solid #395249}.sidebar-caption{position:absolute;bottom:105px;left:25px;color:#9ab5a6;font-size:13px}.navigation{position:fixed;top:140px;left:16px;width:198px;display:flex;flex-direction:column;gap:8px;z-index:6}.navigation button{background:transparent;text-align:left;color:#aac2b8;display:flex;align-items:center;gap:14px;padding:14px 18px;border-radius:10px;font-weight:500}.navigation button[aria-pressed=true]{background:#d7efde;color:#153b2b;font-weight:700}.navigation svg{width:21px;height:21px;flex-shrink:0}.content{margin-left:230px;padding:42px 46px 64px;min-height:100vh}#notice{max-width:1220px;margin:0 auto 20px;padding:13px 18px;background:#fff5e9;color:#805018;border:1px solid #ecd9b7;border-radius:10px;white-space:pre-wrap;font-size:14px}#notice:empty{display:none}.badge{display:inline-block;font-size:12px;font-weight:600;background:#e8f3ec;color:#327258;padding:4px 9px;border-radius:6px}.folder{min-height:146px;text-align:left;width:100%;background:#fff;color:#253e35;border:1px solid var(--line);border-radius:14px;padding:22px;position:relative;box-shadow:0 2px 3px #192f2503}.folder:hover{box-shadow:0 8px 25px #213f3210;border-color:#aacaba;filter:none}.folder.selected{border:2px solid var(--accent);background:#f6fcf8}.folder-icon{display:block;width:40px;height:34px;color:#438b68;margin-bottom:20px}.folder-icon svg{width:34px;height:30px}.folder strong{display:block;font-size:17px;margin-bottom:8px}.folder small{display:block;font-weight:400}.folder-count{position:absolute;right:18px;top:18px;color:#7f948a;font-size:12px;font-weight:400}#folders{grid-template-columns:repeat(auto-fill,minmax(200px,1fr))}.empty{padding:48px 24px;text-align:center;background:#fff;border:1px dashed #cad8d0;border-radius:16px;color:#6e8177;grid-column:1/-1}.empty strong{display:block;color:#304b3e;font-size:19px;margin-bottom:8px}.music-detail{margin-top:30px}.music-detail .search-row{display:flex;gap:10px;max-width:440px}input:not([type=checkbox]):not([type=range]):not([type=file]),select{width:100%;min-height:46px;padding:11px 13px;border:1px solid #d0ddd4;border-radius:9px;background:#fff;color:#203c30}label{display:block;font-size:14px;font-weight:600;margin:18px 0 8px}input[type=checkbox]{accent-color:var(--accent);width:17px;height:17px;vertical-align:middle;margin-right:8px}input[type=range]{accent-color:var(--accent);width:100%;min-height:34px}input[type=file]{width:100%;padding:22px;background:#f5f9f6;border:1px dashed #b5cdbd;border-radius:10px}form button[type=submit],form>button{margin-top:22px}.number{font-size:36px;letter-spacing:-.05em;color:#183f2d;font-weight:700;line-height:1.35;margin:18px 0 8px;font-variant-numeric:tabular-nums}.list-item{padding:20px 0;border-top:1px solid #e7ece8}.list-item>p{margin:6px 0 12px}.list-item>strong{font-size:17px}audio{width:100%;height:36px;margin:7px 0 10px}.advanced{margin-top:12px;border-radius:10px;background:#f6f8f6;padding:12px 14px}.advanced summary{color:#536d5b;cursor:pointer;font-size:14px}.advanced label{margin-top:14px}.advanced button{font-size:14px;margin:10px 10px 0 0}.advanced select{margin-top:10px}.page-help{max-width:760px;font-size:14px;color:#718276;margin-top:26px}.divider{border:0;border-top:1px solid var(--line);margin:22px 0}dialog{border:0;border-radius:20px;padding:28px;width:min(560px,calc(100% - 32px));max-height:90dvh;box-shadow:0 24px 100px #102d3030;color:#223a2c}dialog::backdrop{background:#12271f70;backdrop-filter:blur(3px)}.dialog-head{display:flex;align-items:center;justify-content:space-between;gap:20px}.dialog-head h2{font-size:22px;margin:0}.dialog-head button{background:#f0f4f1;color:#425a4a;min-width:44px;padding:8px}.dialog-note{color:#9d3826;font-size:14px;line-height:1.6;white-space:pre-wrap}.dialog-note:empty{display:none}pre{white-space:pre-wrap;overflow-wrap:anywhere;font-size:13px;background:#f0f5f1;padding:14px;border-radius:8px}pre:empty{display:none}code{overflow-wrap:anywhere}.danger{color:#a03128}#login{max-width:450px;margin:9vh auto;padding:36px;border-radius:20px;box-shadow:0 12px 60px #223f2710}#login h2{font-size:27px}.login-title{margin-bottom:26px}body:not(.signed-in) .sidebar{position:static;width:auto;background:transparent;color:#183f2d;padding:28px 38px}body:not(.signed-in) .sidebar small{color:#6d8478}body:not(.signed-in) .sidebar-caption{display:none}body:not(.signed-in) .content{margin:0;padding-top:0;min-height:0}.login-help{margin-top:24px;font-size:13px;color:#778c7e}[hidden]{display:none!important}button.loading{opacity:.6}.filter{display:flex;border:1px solid #dce5df;border-radius:10px;padding:4px;background:#edf2ef}.filter button{border:0;background:transparent;color:#698071;min-height:36px;padding:7px 15px;font-size:14px}.filter button.active{background:#fff;color:#1e5f3d;box-shadow:0 1px 4px #19302514}.summary-strip{display:flex;gap:18px;color:#6e8176;font-size:14px;margin-top:12px}.summary-strip strong{color:#254b34}.device-state{font-size:14px;color:#657e6a;margin:10px 0}.actions{display:flex;gap:8px;flex-wrap:wrap}#metrics{grid-template-columns:repeat(4,minmax(0,1fr))}#metrics h3{font-size:15px;font-weight:500;color:#61766b}#metrics .number{font-size:28px}.no-margin{margin:0}.radio-tile{display:grid;grid-template-columns:1fr auto;align-items:center;gap:16px}.radio-tile h3{margin-bottom:8px}.radio-tile p{margin-bottom:0}
@media(max-width:1000px){.content{padding:30px 24px 60px;margin-left:204px}.sidebar{width:204px;padding:28px 18px}.navigation{width:176px;left:14px}#metrics{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:680px){.sidebar{position:static;width:100%;padding:22px 20px;background:#172d29;display:flex;align-items:center;justify-content:space-between}.brand h1{font-size:19px}.sidebar-caption{display:none}.sidebar #logout{position:static;min-width:54px;min-height:40px;padding:8px}.content{margin:0;padding:22px 16px 100px}.navigation{position:fixed;top:auto;bottom:0;left:0;width:100%;flex-direction:row;justify-content:space-around;background:#fff;border-top:1px solid #dce6de;padding:7px 5px calc(7px + env(safe-area-inset-bottom));gap:0}.navigation button{flex:1;justify-content:center;flex-direction:column;gap:3px;text-align:center;padding:7px 4px;font-size:12px;color:#6c8172}.navigation button[aria-pressed=true]{background:#edf6ef;color:#147346}.navigation svg{width:21px;height:21px}h2{font-size:26px}.section-head{gap:14px}.section-head .actions{width:100%}.section-head .actions button{flex:1}.grid{grid-template-columns:1fr}#folders{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.folder{padding:16px;min-height:144px}.folder strong{font-size:15px}.folder small{font-size:12px}.folder-count{top:14px;right:12px}.folder-icon{margin-bottom:18px}#metrics .card{padding:18px 14px}#metrics .number{font-size:24px}.card{padding:20px}.filter{width:100%}.filter button{flex:1;padding:7px 8px}.radio-tile{grid-template-columns:1fr}.page-help{line-height:1.8}dialog{padding:22px}body:not(.signed-in) .content{padding:10px 16px}#login{margin:4vh auto;padding:28px}.music-detail .section-head{align-items:flex-start}.music-detail .search-row{width:100%}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
/* 统计以设备为单位，每张卡只展示两项时长，长设备标识允许换行。 */
#metrics{grid-template-columns:repeat(auto-fit,minmax(min(100%,280px),1fr))}#metrics h3{overflow-wrap:anywhere;font-weight:600}#statsDevice{max-width:640px}.list-item,.folder strong,#transfers p{overflow-wrap:anywhere}
.emoji-nav-link{display:block;text-decoration:none;color:#aac2b8;padding:14px 18px;border-radius:10px;font-size:16px;min-height:44px}.emoji-nav-link:hover{background:#243d35}@media(max-width:680px){.emoji-nav-link{flex:1;text-align:center;color:#147346;font-size:12px;padding:12px 4px;align-self:center}}
#uploadState,#uploadErrors{overflow-wrap:anywhere}#uploadErrors{padding-left:20px;max-height:180px;overflow-y:auto}#uploadErrors:empty{display:none}
.preparation-item{padding:10px 0;border-bottom:1px solid var(--border,#e5e7eb);overflow-wrap:anywhere}.preparation-item p{margin:6px 0}#musicPreparation details{max-height:360px;overflow:auto}

.user-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 2px;border-bottom:1px solid rgba(0,0,0,.08)}.user-row:last-child{border-bottom:none}.user-name{font-weight:600;word-break:break-all}