:root{--bg:#fff;--surface:#fff;--soft:#f6f8f7;--ink:#18201c;--muted:#68736d;--line:#e4e9e6;--green:#087a4b;--green-soft:#eaf5ef;--danger:#bd3b3b;--shadow:0 16px 50px rgba(19,43,31,.12);font-family:Inter,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg)}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:#fff}button,input,select,textarea{font:inherit;color:inherit}button{cursor:pointer}.topbar{height:70px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 24px;position:sticky;top:0;background:rgba(255,255,255,.96);backdrop-filter:blur(14px);z-index:20}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink);font-size:21px}.brand img{width:34px;height:34px}.top-actions{display:flex;align-items:center;gap:10px}.saved{font-size:13px;color:var(--green);background:var(--green-soft);padding:9px 12px;border-radius:8px}.primary,.secondary,.text-button,.icon-button{border-radius:8px;padding:10px 16px;border:1px solid var(--line);background:#fff}.primary{background:var(--green);border-color:var(--green);color:#fff}.primary:hover{background:#066b41}.secondary:hover,.icon-button:hover{border-color:var(--green);color:var(--green)}.text-button{border:0;color:var(--green);padding:8px;background:transparent}.mobile-nav{display:none;border:0;background:transparent;font-size:22px}.app-shell{display:grid;grid-template-columns:260px 1fr;min-height:calc(100vh - 70px)}.sidebar{border-right:1px solid var(--line);padding:24px 14px 20px;display:flex;flex-direction:column;justify-content:space-between;background:#fff}.sidebar nav>button,.nav-group button{width:100%;border:0;background:transparent;text-align:left;border-radius:8px;padding:11px 12px;display:flex;align-items:center;gap:11px;color:#334039;margin:2px 0}.sidebar nav>button:hover,.sidebar nav>button.active,.nav-group button:hover,.nav-group button.active{background:var(--green-soft);color:var(--green);font-weight:650}.sidebar nav>button span{width:20px;text-align:center;font-size:18px}.nav-group{border-top:1px solid var(--line);padding-top:15px;margin-top:15px}.nav-title{display:flex;align-items:center;gap:10px;padding:8px 12px;font-weight:700}.nav-title>button{margin-left:auto;width:28px!important;padding:2px!important;justify-content:center;font-size:18px}.nav-group>div:last-child button{padding-left:42px;font-size:14px;position:relative}.nav-group>div:last-child button:before{content:"";width:6px;height:6px;background:#c3cbc7;border-radius:50%;position:absolute;left:25px}.nav-group>div:last-child button.active:before{background:var(--green)}.storage{padding:14px 10px 0;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}.storage>div:first-child{display:flex;justify-content:space-between}.bar{height:5px;background:#e8ecea;border-radius:9px;margin:10px 0 8px}.bar i{display:block;width:18%;height:100%;background:var(--green);border-radius:9px}.workspace{min-width:0;display:grid;grid-template-columns:minmax(620px,1fr) 360px}.content{padding:30px 28px 60px;min-width:0}.content-head{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:22px}.content-head h1{font-size:26px;margin:0 0 7px}.content-head p{margin:0;color:var(--muted);font-size:14px}.toolbar{display:grid;grid-template-columns:minmax(280px,1fr) 150px 130px;gap:10px;margin-bottom:20px}.search{border:1px solid var(--line);border-radius:8px;padding:0 12px;display:flex;align-items:center;gap:8px}.search input{border:0;outline:0;width:100%;height:42px;background:transparent}select{height:42px;border:1px solid var(--line);border-radius:8px;background:#fff;padding:0 10px}.table-head,.page-row{display:grid;grid-template-columns:minmax(310px,1fr) 110px 110px 60px 86px 34px;gap:12px;align-items:center}.table-head{font-size:12px;color:var(--muted);padding:0 14px 9px}.page-row{border-top:1px solid var(--line);padding:14px;min-height:88px;transition:.18s}.page-row:hover{background:#fbfcfb}.page-row.selected{outline:1px solid #79b99a;background:#fbfefc}.page-main{display:grid;grid-template-columns:64px minmax(0,1fr);gap:13px;align-items:center;min-width:0}.thumb{width:64px;height:48px;border-radius:6px;background:linear-gradient(135deg,#e8f4ee,#d8ebe0);display:grid;place-items:center;color:var(--green);font-weight:800;font-size:18px;border:1px solid #d6e7dd}.page-copy{min-width:0}.page-copy strong,.page-copy span,.page-copy a{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.page-copy strong{font-size:14px;margin-bottom:4px}.page-copy span{font-size:12px;color:var(--muted);margin-bottom:5px}.page-copy a{font-size:12px;color:var(--green);text-decoration:none}.category-label,.date-label{font-size:12px;color:#59645f}.star,.play-add,.more{border:0;background:transparent;font-size:20px;color:#79837e;border-radius:7px;padding:7px}.star.active{color:var(--green)}.star:hover,.play-add:hover,.more:hover{background:var(--green-soft);color:var(--green)}.empty{padding:80px 20px;text-align:center;color:var(--muted)}.empty strong{font-size:18px;color:var(--ink)}.playlist-panel{border-left:1px solid var(--line);padding:26px 18px;background:#fff;min-width:0}.panel-head{display:flex;justify-content:space-between;gap:10px}.panel-head p{margin:0 0 4px;font-size:12px;color:var(--muted)}.panel-head h2{margin:0;font-size:19px}.icon-button{padding:5px 10px;font-size:20px}.panel-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:20px 0 16px}.panel-count,.panel-hint{font-size:12px;color:var(--muted)}.playlist-items{border:1px solid 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16px;border-radius:8px;opacity:0;pointer-events:none;transition:.2s;z-index:50}.toast.show{opacity:1;transform:translate(-50%,0)}@media(max-width:1450px){.workspace{grid-template-columns:1fr}.playlist-panel{position:fixed;right:0;top:70px;bottom:0;width:380px;box-shadow:var(--shadow);z-index:15;transform:translateX(102%);transition:.2s;overflow:auto}.playlist-panel.open{transform:none}}@media(max-width:760px){.topbar{padding:0 12px}.mobile-nav{display:block}.brand strong{font-size:17px}.top-actions .secondary,.saved{display:none}.app-shell{grid-template-columns:1fr}.sidebar{position:fixed;top:70px;bottom:0;left:0;width:270px;z-index:18;transform:translateX(-102%);transition:.2s;box-shadow:var(--shadow)}.sidebar.open{transform:none}.content{padding:22px 14px}.workspace{display:block}.toolbar{grid-template-columns:1fr 1fr}.search{grid-column:1/-1}.table-head{display:none}.page-row{grid-template-columns:1fr 42px 42px 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