:root{color:#eef4ef;--bg:#111418;--panel:#1a1e23;--panel-soft:#22272d;--panel-strong:#111418;--line:#303842;--text:#eef4ef;--muted:#9aa4aa;--brand:#0b7d68;--brand-bright:#19c28f;--danger:#f7a28d;--danger-bg:#3b201b;--shadow:0 22px 70px #0000005c;--glow:#14765e33;--sidebar:#15181d;--nav-active:#2a3037;--card-bg:#1a1e23f0;--audio-tile-bg:var(--panel-soft);--audio-tile-color:#fff;background:#111418;font-family:Inter,Microsoft YaHei,system-ui,sans-serif}:root[data-theme=light]{color:#15202a;--bg:#f5f8f3;--panel:#fff;--panel-soft:#f7faf8;--panel-strong:#eef5f0;--line:#d8e1dc;--text:#15202a;--muted:#64736d;--brand:#0b7d68;--brand-bright:#087b63;--danger:#b7442d;--danger-bg:#fff1ed;--shadow:0 22px 70px #2130291f;--glow:#14765e1f;--sidebar:#f7faf8;--nav-active:#e4f3ec;--card-bg:#fffffff0;--audio-tile-bg:#edf4f0;--audio-tile-color:#53625d;background:#f5f8f3}*{box-sizing:border-box}body{background:radial-gradient(circle at 30% 10%, var(--glow), transparent 32%), var(--bg);min-width:320px;margin:0}button,input,textarea,select{font:inherit}button{background:var(--brand);color:#fff;cursor:pointer;border:0;border-radius:7px;justify-content:center;align-items:center;gap:8px;min-height:38px;padding:0 14px;display:inline-flex}button:disabled{cursor:not-allowed;opacity:.65}h1,h2,h3,p{margin-top:0}h1{letter-spacing:0;margin-bottom:8px;font-size:clamp(30px,3vw,42px);line-height:1.05}h2{margin-bottom:0;font-size:20px}label{color:var(--text);gap:8px;margin:16px 0;font-weight:700;display:grid}label span{font-size:13px}input,textarea,select{border:1px solid var(--line);background:var(--panel-soft);width:100%;color:var(--text);border-radius:7px;outline:none;padding:10px 12px}textarea{resize:vertical;min-height:132px}.file-picker{border:1px solid var(--line);background:var(--panel-soft);border-radius:7px;align-items:center;gap:10px;min-height:56px;padding:0 12px;display:flex}.file-picker input{display:none}.file-picker button{color:#101417;background:#fff;flex:none;min-height:34px;padding:0 12px}.file-picker strong{text-overflow:ellipsis;white-space:nowrap;min-width:0;overflow:hidden}.login-page{place-items:center;min-height:100vh;padding:24px;display:grid}.login-panel{background:var(--panel);border:1px solid var(--line);width:min(520px,100%);box-shadow:var(--shadow);border-radius:8px;padding:44px}.studio-shell{grid-template-columns:86px minmax(0,1fr);min-height:100vh;display:grid}.side-nav{background:var(--sidebar);border-right:1px solid var(--line);flex-direction:column;align-items:center;gap:14px;height:100vh;padding:22px 10px;display:flex;position:sticky;top:0}.nav-item{width:64px;min-height:64px;color:var(--muted);background:0 0;place-items:center;gap:5px;padding:8px 0;font-size:13px;display:grid}.nav-item.active{background:var(--nav-active);color:var(--text);box-shadow:inset 3px 0 0 var(--brand-bright)}.studio-main{width:min(1720px,100% - 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32px)}.task-video-fullscreen video{max-width:calc(100vw - 32px);max-height:calc(100vh - 32px)}.studio-shell{grid-template-columns:1fr}.side-nav{flex-direction:row;justify-content:center;height:auto;position:static}.studio-main{width:min(100% - 24px,1720px)}.studio-header,.asset-head{display:grid}.asset-search{min-width:0}.task-grid,.asset-grid{grid-template-columns:1fr}.composer-top-row{grid-template-columns:1fr;align-items:stretch}}