/* --- Landing page styles --- */
  .page-bg{position:fixed;inset:0;z-index:-1;pointer-events:none}
  .page-bg-light{background:radial-gradient(ellipse 60% 50% at 10% 10%,rgba(78,110,242,.08),transparent),#f5f7fa}
  .page-bg-dark{background:radial-gradient(ellipse 60% 50% at 10% 10%,rgba(78,110,242,.04),transparent),#0f1117}
  .landing{min-height:100vh;display:flex;flex-direction:column}
  .landing-nav{display:flex;align-items:center;justify-content:space-between;padding:16px 32px;max-width:1100px;width:100%;margin:0 auto}
  .landing-logo{display:flex;align-items:center;gap:10px;font-size:1.15rem;font-weight:800;color:var(--text-primary);text-decoration:none}
  .landing-logo-icon{width:34px;height:34px;border-radius:10px;background:var(--c-primary);display:flex;align-items:center;justify-content:center;font-size:16px;color:#fff}
  .landing-nav-actions{display:flex;gap:8px;align-items:center}
  .hero{flex:1;display:flex;align-items:center;justify-content:center;padding:40px 32px;max-width:1100px;width:100%;margin:0 auto}
  .hero-inner{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;width:100%}
  .hero-text{max-width:480px}
  .hero-badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:var(--r-full);background:var(--c-primary-50);color:var(--c-primary);font-size:.8rem;font-weight:600;margin-bottom:16px}
  .hero h1{font-size:clamp(1.8rem,4vw,2.5rem);font-weight:900;line-height:1.2;color:var(--text-primary);margin-bottom:16px}
  .hero h1 .gradient-text{background:linear-gradient(135deg,var(--c-primary),var(--c-accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
  .hero-desc{font-size:1rem;color:var(--text-secondary);line-height:1.7;margin-bottom:24px}
  .hero-actions{display:flex;gap:10px;flex-wrap:wrap}
  .hero-visual{display:flex;align-items:center;justify-content:center}
  .hero-card-stack{position:relative;width:100%;max-width:380px}
  .hero-card-bg{position:absolute;top:16px;left:16px;right:-16px;bottom:-16px;background:linear-gradient(135deg,var(--c-primary-100),rgba(6,182,212,.08));border-radius:20px;z-index:0}
  .hero-card-demo{position:relative;z-index:1;background:var(--bg-surface);border:1px solid var(--border-light);border-radius:16px;padding:20px;box-shadow:var(--shadow-lg)}
  .hero-card-demo-header{display:flex;align-items:center;gap:10px;margin-bottom:14px}
  .hero-card-demo-avatar{width:36px;height:36px;border-radius:10px;background:var(--c-primary);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:14px}
  .hero-card-demo-info h4{font-size:.875rem;font-weight:700;color:var(--text-primary)}
  .hero-card-demo-info p{font-size:.75rem;color:var(--text-muted)}
  .hero-file-list{display:flex;flex-direction:column;gap:6px}
  .hero-file-item{display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:var(--r-sm);background:var(--c-primary-50);transition:all .15s ease}
  .hero-file-item:hover{transform:translateX(3px)}
  .hero-file-icon{font-size:18px}
  .hero-file-name{font-size:.8rem;font-weight:600;color:var(--text-primary);flex:1}
  .hero-file-size{font-size:.72rem;color:var(--text-muted)}
  .features{padding:32px 32px 48px;max-width:1100px;width:100%;margin:0 auto}
  .features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}
  .feature-card{background:var(--bg-surface);border:1px solid var(--border-light);border-radius:var(--r-lg);padding:20px;text-align:center;transition:all .2s ease}
  .feature-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
  .feature-icon{width:44px;height:44px;border-radius:12px;margin:0 auto 12px;display:flex;align-items:center;justify-content:center;font-size:22px;background:var(--c-primary-50)}
  .feature-card h3{font-size:.9375rem;font-weight:700;color:var(--text-primary);margin-bottom:4px}
  .feature-card p{font-size:.8rem;color:var(--text-secondary);line-height:1.5}
  .landing-footer{padding:20px 32px;text-align:center;color:var(--text-muted);font-size:.8rem;border-top:1px solid var(--border-light)}
  /* --- Button color fixes --- */
  .btn{color:var(--text-primary,#333) !important}
  .btn-primary{color:#fff !important}
  .btn-secondary{color:var(--text-primary,#333) !important}
  .btn-ghost{color:var(--text-secondary,#666) !important}
  .btn-danger{color:#dc2626 !important}
  .btn-sm.btn-danger{color:#dc2626 !important}
  .btn-lg{color:inherit !important}
  .btn-primary.btn-lg{color:#fff !important}
  
  /* --- Auth panel z-index fix --- */
  .auth-panel{z-index:11800 !important}
  
  /* --- Upload overlay: flex centering when active --- */
  .upload-overlay.active{display:flex !important;align-items:center;justify-content:center;flex-direction:column}
  
  
    .folder-item{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:8px;cursor:pointer;transition:all .2s;border:1px solid transparent;font-size:13px}
    .folder-item:hover{background:var(--hover-bg,rgba(0,0,0,.04));border-color:var(--border,#d1d5db)}
    .folder-item.active{background:var(--c-primary,#4361ee);color:#fff;border-color:var(--c-primary,#4361ee)}
    .folder-item .folder-icon{font-size:16px}
    .folder-item .folder-name{max-width:120px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
    .folder-item .folder-count{font-size:11px;opacity:.7}
    .folder-item .folder-actions{display:none;margin-left:4px}
    .folder-item:hover .folder-actions{display:flex;gap:4px}
    .folder-item .folder-actions button{background:#fff;border:1px solid #d1d5db;cursor:pointer;font-size:13px;padding:6px 10px;border-radius:10px;color:#1f2937;box-shadow:0 1px 3px rgba(0,0,0,0.08);transition:all .2s ease;font-weight:500}
    .folder-item .folder-actions button:hover{background:#fff;border-color:#9ca3af;box-shadow:0 2px 8px rgba(0,0,0,0.12);transform:translateY(-1px);color:#1f2937}
    .modal-overlay{display:none!important}.modal-overlay.active{display:flex!important;align-items:center;justify-content:center;position:fixed;inset:0;z-index:10000;background:rgba(0,0,0,.5);pointer-events:auto!important}
    .modal-box{position:relative;background:var(--card-bg,#fff);border-radius:12px;padding:24px;max-width:90vw;max-height:90vh;overflow:auto;box-shadow:0 20px 60px rgba(0,0,0,.3)}
    /* 预览模式：媒体内容自适应，盒子收紧、居中 */
    .modal-overlay.preview-mode{background:rgba(0,0,0,.72);backdrop-filter:blur(6px)}
    .modal-overlay.preview-mode .modal-box{padding:10px;width:auto;max-width:94vw;max-height:92vh;overflow:hidden;border-radius:14px;background:#000}
    .modal-overlay.preview-mode .modal-box img,
    .modal-overlay.preview-mode .modal-box video{max-width:100%;max-height:82vh;object-fit:contain;border-radius:8px;display:block;margin:0 auto}
    .modal-overlay.preview-mode .modal-box iframe{width:min(94vw,100%);height:82vh;border:0;border-radius:8px;background:#fff;display:block}
    .modal-overlay.preview-mode .modal-box audio{width:min(88vw,440px);display:block;margin:12px auto}
    /* 预览弹窗右上角关闭按钮（常驻，不受内容清空影响） */
    .preview-modal-close{position:fixed;top:16px;right:16px;z-index:10001;width:40px;height:40px;border-radius:50%;border:1px solid rgba(255,255,255,.4);background:rgba(23,32,51,.6);color:#fff;font-size:20px;line-height:1;cursor:pointer;display:none;align-items:center;justify-content:center;box-shadow:0 6px 20px rgba(0,0,0,.35);transition:transform .15s,background .15s;padding:0}
    .modal-overlay.active .preview-modal-close{display:flex}
    .preview-modal-close:hover{transform:scale(1.1);background:rgba(23,32,51,.85)}
    .modal-box h3{margin:0 0 16px;font-size:16px}
    .form-group{margin-bottom:14px}.form-group label{display:block;font-size:13px;color:var(--text-secondary,#6b7280);margin-bottom:4px}
    .form-group input[type=text]{width:100%;padding:8px 12px;border:1px solid var(--border,#d1d5db);border-radius:6px;font-size:14px}
    .modal-actions{display:flex;gap:8px;justify-content:flex-end;margin-top:16px}

    
    /* ====== Netdisk File Manager UI v2 ====== */
    .netdisk-panel{padding:0!important;background:transparent!important;border:none!important;box-shadow:none!important}
    .netdisk-header{display:flex;align-items:center;justify-content:space-between;padding:10px 20px;background:var(--card-bg,#fff);border-radius:16px 16px 0 0;border:1px solid var(--border-light,#e5e7eb);border-bottom:none}
    .netdisk-header-left{display:flex;align-items:baseline;gap:10px;min-width:0}
    .netdisk-title{margin:0;font-size:16px;font-weight:700;color:var(--text-primary,#1f2937)}
    .netdisk-summary{font-size:12px;color:var(--text-secondary,#9ca3af);font-weight:400}
    .netdisk-header-right{display:flex;gap:8px;align-items:center;flex-shrink:0}
    .netdisk-btn{display:inline-flex;align-items:center;gap:6px;padding:7px 14px;border:none;border-radius:9px;font-size:13px;font-weight:600;cursor:pointer;transition:all .18s;white-space:nowrap}
    .netdisk-btn-primary{background:linear-gradient(135deg,var(--c-primary,#4361ee),var(--c-primary-hover,#3b54d4));color:#fff;box-shadow:0 2px 8px rgba(67,97,238,.25)}.netdisk-btn-primary:hover{opacity:.9;transform:translateY(-1px)}
    .netdisk-btn-ghost{background:transparent;color:var(--text,#374151);border:1px solid var(--border,#d1d5db)}.netdisk-btn-ghost:hover{background:var(--light-gray,#f3f4f6)}
    .netdisk-btn-sm{padding:8px 16px;font-size:13px;border-radius:10px;background:#fff;color:#1f2937;border:1px solid #d1d5db;cursor:pointer;font-weight:500;box-shadow:0 1px 3px rgba(0,0,0,0.08);transition:all .2s ease}
    .netdisk-btn-sm:hover{border-color:#9ca3af;box-shadow:0 2px 8px rgba(0,0,0,0.12);transform:translateY(-1px);background:#fff}
    .netdisk-btn-danger{background:#fff;color:#dc2626;border:1px solid #fecaca}.netdisk-btn-danger:hover{background:#fee2e2;border-color:#dc2626}
    .netdisk-folders{display:flex;flex-wrap:wrap;gap:8px;padding:14px 24px;background:var(--card-bg,#fff);border-left:1px solid var(--border-light,#e5e7eb);border-right:1px solid var(--border-light,#e5e7eb)}
    .netdisk-folders .folder-item{display:inline-flex;align-items:center;gap:6px;padding:7px 16px;border-radius:20px;cursor:pointer;transition:all .18s;border:1px solid var(--border,#e5e7eb);font-size:13px;font-weight:500;background:var(--card-bg,#fff);color:var(--text,#374151)}
    .netdisk-folders .folder-item:hover{border-color:var(--c-primary,#4361ee);color:var(--c-primary,#4361ee)}
    .netdisk-folders .folder-item.active{background:var(--c-primary,#4361ee);color:#fff;border-color:var(--c-primary,#4361ee)}
    .netdisk-folders .folder-item .folder-count{font-size:11px;opacity:.6}
    .netdisk-folders .folder-item .folder-actions{display:none;margin-left:4px}
    .netdisk-folders .folder-item:hover .folder-actions{display:flex;gap:4px}
    .netdisk-folders .folder-item .folder-actions button{background:#fff;border:1px solid #d1d5db;cursor:pointer;font-size:13px;padding:6px 10px;border-radius:10px;color:#1f2937;box-shadow:0 1px 3px rgba(0,0,0,0.08);transition:all .2s ease;font-weight:500}
    .netdisk-folders .folder-item .folder-actions button:hover{border-color:#9ca3af;box-shadow:0 2px 8px rgba(0,0,0,0.12);transform:translateY(-1px)}
    .netdisk-folders .folder-item .folder-actions button.danger{color:#dc2626;border-color:#fecaca}
    .netdisk-folders .folder-item .folder-actions button.danger:hover{background:#fee2e2;border-color:#dc2626}
    .netdisk-toolbar{display:flex;align-items:center;gap:10px;padding:12px 24px;background:var(--card-bg,#fff);border-left:1px solid var(--border-light,#e5e7eb);border-right:1px solid var(--border-light,#e5e7eb);border-bottom:1px solid var(--border-light,#e5e7eb)}
    .netdisk-toolbar-check{display:flex;align-items:center;gap:6px;cursor:pointer;font-size:13px;color:var(--text-secondary,#6b7280);user-select:none;font-weight:500}
    .netdisk-toolbar-check input{cursor:pointer;width:16px;height:16px;accent-color:var(--c-primary,#4361ee)}
    .netdisk-toolbar-count{font-size:12px;color:var(--c-primary,#4361ee);font-weight:600}
    .netdisk-toolbar-actions{display:flex;gap:6px;margin-left:auto}
    .netdisk-files{padding:20px 24px;background:var(--card-bg,#fff);border-left:1px solid var(--border-light,#e5e7eb);border-right:1px solid var(--border-light,#e5e7eb);border-bottom:1px solid var(--border-light,#e5e7eb);border-radius:0 0 16px 16px;min-height:200px}
    .netdisk-files .grid-view{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px}
    .netdisk-files .grid-item{border-radius:14px;border:1px solid var(--border-light,#e5e7eb);overflow:hidden;transition:all .2s;background:var(--card-bg,#fff);position:relative}
    .netdisk-files .grid-item:hover{border-color:var(--c-primary,#4361ee);box-shadow:0 6px 24px rgba(67,97,238,.12);transform:translateY(-3px)}
    .netdisk-files .grid-item.selected{border-color:var(--c-primary,#4361ee);box-shadow:0 0 0 2px rgba(67,97,238,.2)}
    .netdisk-files .grid-item .select-checkbox{position:absolute;top:10px;left:10px;z-index:2;width:18px;height:18px;accent-color:var(--c-primary,#4361ee);cursor:pointer;opacity:0;transition:opacity .15s}
    .netdisk-files .grid-item:hover .select-checkbox,.netdisk-files .grid-item.selected .select-checkbox{opacity:1}
    .netdisk-files .grid-preview{height:140px;background:var(--bg-surface-secondary,#f9fafb);display:flex;align-items:center;justify-content:center;cursor:pointer;overflow:hidden}
    .netdisk-files .grid-preview img{width:100%;height:100%;object-fit:cover}
    .netdisk-files .grid-preview .file-placeholder{font-size:42px;color:var(--gray,#9ca3af)}
    .netdisk-files .grid-info{padding:12px 14px;display:flex;flex-direction:column}
    .netdisk-files .grid-name{font-size:13px;font-weight:600;color:var(--text-primary,#1f2937);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-bottom:4px;display:flex;align-items:center;gap:5px}
    .netdisk-files .grid-name .file-type-badge{font-size:14px;flex-shrink:0}
    .netdisk-files .grid-meta{font-size:11px;color:var(--text-secondary,#9ca3af);margin-bottom:10px}
    .netdisk-files .grid-actions{display:flex;gap:4px;flex-wrap:nowrap;overflow:hidden;align-items:center}
    .netdisk-files .grid-actions button{flex:0 0 auto;min-width:0;padding:6px 8px;border:1px solid var(--border-light,#e5e7eb);background:var(--light-gray,#f3f4f6);color:var(--text,#374151);border-radius:8px;cursor:pointer;font-size:12px;font-weight:500;transition:all .15s;white-space:nowrap;overflow:hidden}
    .netdisk-files .grid-actions button:hover{background:var(--c-primary,#4361ee);color:#fff}
    .netdisk-files .grid-actions button.btn-danger:hover{background:#dc2626;color:#fff}
    .netdisk-files .file-more-wrap{position:relative;display:inline-flex;flex:0 0 auto;min-width:0}
    .netdisk-files .file-more-btn{padding:6px 8px!important;font-size:14px!important}
    .netdisk-files .file-more-menu{display:none;position:fixed;z-index:100001;background:var(--card-bg,#fff);border:1px solid var(--border,#e5e7eb);border-radius:12px;box-shadow:0 12px 40px rgba(0,0,0,.15);min-width:150px;overflow:hidden;padding:4px}
    .netdisk-files .file-more-wrap.open .file-more-menu{display:block}
    .netdisk-files .file-more-menu button{display:block;width:100%!important;padding:9px 14px!important;font-size:13px!important;text-align:left!important;background:transparent!important;color:var(--text,#374151)!important;border:none!important;border-radius:8px!important;font-weight:500!important}
    .netdisk-files .file-more-menu button:hover{background:var(--light-gray,#f3f4f6)!important;color:var(--c-primary,#4361ee)!important}
    .netdisk-pagination{display:flex;align-items:center;justify-content:center;gap:12px;padding:16px 24px;background:var(--card-bg,#fff);border:1px solid var(--border-light,#e5e7eb);border-top:none;border-radius:0 0 16px 16px}
    .netdisk-pagination-info{font-size:13px;color:var(--text-secondary,#6b7280);font-weight:500}
    .netdisk-files .empty-state{text-align:center;padding:80px 20px;color:var(--text-secondary,#9ca3af);font-size:14px}
    .netdisk-files .empty-state i{font-size:52px;display:block;margin-bottom:16px;font-style:normal;opacity:.6}
    /* --- 面包屑路径（替代标题，逐级可点击返回） --- */
    .netdisk-breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:2px;font-size:14px;line-height:1.4;min-width:0}
    .netdisk-breadcrumb .bc-item{padding:2px 4px;border-radius:6px;max-width:260px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .netdisk-breadcrumb .bc-item:not(.active){cursor:pointer}
    .netdisk-breadcrumb .bc-item:not(.active):hover{background:var(--light-gray,#f3f4f6)}
    .netdisk-breadcrumb .bc-sep{color:var(--text-tertiary,#c2cad6);margin:0 2px}
    /* --- 搜索框 --- */
    .netdisk-search{position:relative;display:flex;align-items:center}
    .netdisk-search input{width:220px;max-width:42vw;padding:6px 28px 6px 12px;border:1px solid var(--border,#d1d5db);border-radius:18px;font-size:13px;outline:none;background:var(--card-bg,#fff);color:var(--text,#1f2733);transition:border-color .15s,box-shadow .15s}
    .netdisk-search input:focus{border-color:var(--c-primary,#4361ee);box-shadow:0 0 0 3px rgba(67,97,238,.12)}
    .netdisk-search-icon{position:absolute;right:12px;top:50%;transform:translateY(-50%);color:var(--text-tertiary,#9aa4b2);pointer-events:none;font-size:13px}
    /* --- 子文件夹卡片网格（与文件卡片并排，视觉统一） --- */
    .netdisk-folders-inline{padding:0 24px}
    .folder-items-group{margin:14px 0 6px}
    .folder-items-group>summary{cursor:pointer;list-style:none;font-weight:600;color:var(--text-secondary,#6b7280);font-size:13px;padding:6px 0;display:flex;align-items:center;gap:6px}
    .folder-items-group>summary::-webkit-details-marker{display:none}
    .folder-items-group>summary::before{content:'▾';font-size:11px;color:var(--text-tertiary,#9aa4b2);transition:transform .15s}
    .folder-items-group:not([open])>summary::before{transform:rotate(-90deg)}
    .folder-items-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:14px;padding:6px 0 10px}
    .folder-item-card{display:flex;align-items:center;gap:12px;padding:14px;border:1px solid var(--border-light,#e5e7eb);border-radius:14px;background:var(--card-bg,#fff);cursor:pointer;transition:all .2s;position:relative}
    .folder-item-card:hover{border-color:var(--c-primary,#4361ee);box-shadow:0 6px 24px rgba(67,97,238,.12);transform:translateY(-3px)}
    .folder-item-card .folder-card-icon{font-size:24px;line-height:1;flex-shrink:0}
    .folder-item-card .folder-card-body{flex:1;min-width:0}
    .folder-item-card .folder-card-name{font-weight:600;color:var(--text,#1f2733);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:14px}
    .folder-item-card .folder-card-count{font-size:12px;color:var(--text-tertiary,#9aa4b2);margin-top:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .folder-item-card .folder-card-actions{position:absolute;right:10px;top:50%;transform:translateY(-50%);display:flex;gap:4px;opacity:0;transition:opacity .15s;pointer-events:none}
    .folder-item-card:hover .folder-card-actions{opacity:1;pointer-events:auto}
    .folder-item-card .folder-card-actions button{border:1px solid var(--border-light,#e6eaf0);background:var(--card-bg,#fff);border-radius:8px;padding:4px 7px;cursor:pointer;font-size:12px;color:var(--text-secondary,#6b7280)}
    .folder-item-card .folder-card-actions button:hover{background:var(--light-gray,#f3f4f6)}
    .folder-item-card .folder-card-actions .danger{color:#dc2626;border-color:#fecaca}
    .folder-item-card .folder-card-actions .danger:hover{background:#fee2e2}
    /* --- 移动端微调 --- */
    @media(max-width:768px){
      .netdisk-breadcrumb .bc-item{max-width:160px}
      .netdisk-search input{width:100%!important;flex:1}
      .folder-items-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}
      .folder-item-card{padding:10px;padding-right:14px}
      .folder-item-card .folder-card-actions{opacity:1;pointer-events:auto;position:static;transform:none;right:auto;top:auto;margin-left:6px}
    }
    /* --- Mobile components base --- */
    .mobile-topbar{display:none;align-items:center;justify-content:space-between;padding:10px 16px;background:var(--card-bg,#fff);border-bottom:1px solid var(--border-light,#e5e7eb);position:sticky;top:0;z-index:100}
    .mobile-topbar-title{font-size:16px;font-weight:700;color:var(--text-primary,#1f2937)}
    .mobile-menu-btn{display:none;align-items:center;justify-content:center;width:40px;height:40px;border-radius:10px;border:1px solid var(--border,#d1d5db);background:var(--card-bg,#fff);color:var(--text,#374151);font-size:20px;cursor:pointer}
    .sidebar-close-btn{display:none}

    /* ====== H5 移动端适配 (唯一权威定义) ====== */
    @media(max-width:768px){
      .mobile-topbar{display:flex!important}
      .mobile-menu-btn{display:flex!important}
      .main-header{display:none!important}
      .app-shell{flex-direction:column!important;min-height:100vh!important}
      .main-content{padding:0!important;width:100%!important;gap:0!important}
      .sidebar{position:fixed!important;top:0!important;left:0!important;bottom:0!important;width:280px!important;max-width:82vw!important;transform:translateX(-100%)!important;transition:transform .3s cubic-bezier(.16,1,.3,1)!important;z-index:10001!important;border-radius:0!important;overflow-y:auto!important;padding-top:48px!important;flex-shrink:0!important}
      .sidebar.mobile-open,.sidebar.open{transform:translateX(0)!important}
      .sidebar.collapsed{width:280px!important;min-width:280px!important;transform:translateX(-100%)!important;padding:16px 12px!important}
      .sidebar-overlay{display:block!important;position:fixed!important;inset:0!important;z-index:10000!important;background:rgba(0,0,0,.45)!important;opacity:0!important;visibility:hidden!important;pointer-events:none!important;transition:opacity .3s,visibility .3s!important}
      .sidebar-overlay.active{opacity:1!important;visibility:visible!important;pointer-events:auto!important}
      .sidebar-close-btn{display:flex!important;position:fixed!important;top:12px!important;left:248px!important;width:34px!important;height:34px!important;border-radius:8px!important;border:1px solid var(--border-default,#d1d5db)!important;background:var(--bg-surface,#fff)!important;color:var(--text-primary,#374151)!important;font-size:20px!important;cursor:pointer!important;z-index:10002!important;align-items:center!important;justify-content:center!important;line-height:1!important}
      .netdisk-panel{border-radius:0!important}
      .netdisk-header{border-radius:0!important;padding:12px 16px!important;flex-wrap:wrap!important;gap:8px!important}
      .netdisk-header-left{width:100%!important}
      .netdisk-title{font-size:16px!important}
      .netdisk-header-right{width:100%!important;gap:8px!important}
      .netdisk-btn{padding:8px 14px!important;font-size:12px!important;flex:1!important;justify-content:center!important;border-radius:10px!important}
      .netdisk-folders{padding:8px 16px!important;gap:6px!important;overflow-x:auto!important;flex-wrap:nowrap!important;-webkit-overflow-scrolling:touch!important;scrollbar-width:none!important}
      .netdisk-folders::-webkit-scrollbar{display:none!important}
      .netdisk-folders .folder-item{flex-shrink:0!important;padding:6px 12px!important;font-size:12px!important}
      .netdisk-toolbar{padding:8px 16px!important;flex-wrap:wrap!important;gap:6px!important}
      .netdisk-toolbar-actions{width:100%!important;margin-left:0!important;flex-wrap:wrap!important;gap:6px!important}
      .netdisk-btn-sm{padding:7px 12px!important;font-size:12px!important;flex:1!important;text-align:center!important;border-radius:10px!important}
      .netdisk-files{padding:10px 10px!important;border-radius:0!important;min-height:120px!important}
      /* H5 列表视图适配：隐藏次要列，操作按钮只显示主按钮+更多 */
      .record-item{flex-wrap:wrap!important;gap:6px!important;padding:10px!important}
      .record-select{flex:0 0 24px!important}
      .record-content{flex:1 1 auto!important;min-width:0!important}
      .record-size-cell,.record-time-cell,.record-views-cell{display:none!important}
      .record-actions{flex:0 0 100%!important;justify-content:flex-end!important;flex-wrap:nowrap!important;margin-left:24px!important;margin-top:4px!important;gap:6px!important}
      .record-actions button{font-size:12px!important;padding:4px 8px!important}
      .record-name{font-size:13px!important;white-space:nowrap!important;overflow:hidden!important;text-overflow:ellipsis!important}
      .record-ext{font-size:11px!important}
      .file-more-wrap{flex-shrink:0!important}
      /* H5 模式：只显示第一个主操作按钮和"更多"按钮，其余隐藏（由JS移入更多菜单） */
      .netdisk-files .grid-view{grid-template-columns:1fr!important;gap:8px!important}
      .netdisk-files .grid-item{display:flex!important;flex-direction:row!important;border-radius:10px!important}
      .netdisk-files .grid-preview{width:56px!important;height:56px!important;min-width:56px!important;flex-shrink:0!important;border-radius:10px 0 0 10px!important}
      .netdisk-files .grid-preview img{width:100%!important;height:100%!important;object-fit:cover!important}
      .netdisk-files .grid-preview .file-placeholder{font-size:22px!important}
      .netdisk-files .grid-info{flex:1!important;min-width:0!important;display:flex!important;flex-direction:column!important;justify-content:center!important;padding:8px 10px!important}
      .netdisk-files .grid-name{font-size:13px!important;margin-bottom:2px!important}
      .netdisk-files .grid-name .file-type-badge{font-size:13px!important}
      .netdisk-files .grid-meta{font-size:11px!important;margin-bottom:4px!important}
      .netdisk-files .grid-actions{gap:4px!important}
      .netdisk-files .grid-actions button{padding:4px 6px!important;font-size:10px!important;border-radius:6px!important}
      .netdisk-files .grid-item .select-checkbox{opacity:1!important;width:16px!important;height:16px!important;top:6px!important;left:6px!important}
      .netdisk-pagination{padding:10px 16px!important;border-radius:0!important}
      .upload-overlay{padding:0!important}
      .upload-dialog{max-width:100%!important;max-height:100vh!important;height:100%!important;border-radius:0!important}
      .upload-dialog-header{padding:12px 16px!important}
      .upload-dialog-title{font-size:15px!important}
      .upload-dialog-body{padding:12px 16px!important;gap:12px!important}
      .upload-folder-bar{padding:8px 10px!important;border-radius:10px!important;gap:6px!important;flex-wrap:wrap!important}
      .upload-folder-label{font-size:12px!important}
      .upload-folder-select{padding:6px 8px!important;font-size:12px!important;min-width:100px!important}
      .upload-folder-new{padding:6px 10px!important;font-size:12px!important}
      .upload-overlay .drop-zone{padding:28px 16px!important;border-radius:12px!important}
      .upload-overlay .drop-zone-icon{font-size:2rem!important}
      .upload-overlay .drop-zone-text h3{font-size:14px!important}
      .upload-overlay .drop-zone-text p{font-size:12px!important}
      .upload-preview-list{max-height:200px!important}
      .upload-dialog-footer{padding:10px 0 0!important;flex-wrap:wrap!important;gap:8px!important}
      .upload-footer-left,.upload-footer-right{width:100%!important;gap:8px!important}
      .upload-btn-cancel,.upload-btn-start{flex:1!important;padding:10px!important;font-size:13px!important}
      .modal-overlay{padding:10px!important}
      .modal-box{max-width:95vw!important;max-height:90vh!important;border-radius:14px!important}
      .preview-modal-close{top:10px;right:10px;width:36px;height:36px;font-size:18px}
      .modal-overlay.preview-mode .modal-box img,
      .modal-overlay.preview-mode .modal-box video{max-height:72vh}
      .modal-overlay.preview-mode .modal-box iframe{height:72vh}
      .quota-display{padding:10px!important}
      .landing-nav{padding:12px 16px!important}
      .landing-nav-actions{gap:6px!important}
      .hero{padding:20px 16px!important}
      .hero-inner{grid-template-columns:1fr!important;gap:24px!important}
      .hero-visual{display:none!important}
      .hero h1{font-size:1.6rem!important}
      .hero-desc{font-size:.9rem!important}
      .hero-actions{flex-direction:column!important}
      .hero-actions .btn{width:100%!important;text-align:center!important;padding:14px!important}
      .features{padding:20px 16px!important}
      .features-grid{grid-template-columns:1fr!important;gap:12px!important}
      .auth-box{padding:24px 20px!important;max-width:100%!important;margin:10px!important;border-radius:14px!important}
      .auth-header h2{font-size:1.1rem!important}
      .auth-form .form-input{padding:12px 14px!important;font-size:16px!important}
    }
    @media(max-width:480px){
      .netdisk-files .grid-view{gap:6px!important}
      .netdisk-files .grid-preview{width:48px!important;height:48px!important;min-width:48px!important}
      .netdisk-files .grid-preview .file-placeholder{font-size:18px!important}
      .netdisk-files .grid-info{padding:6px 8px!important}
      .netdisk-files .grid-name{font-size:12px!important}
      .netdisk-files .grid-meta{font-size:10px!important}
      .netdisk-files .grid-actions button{padding:3px 5px!important;font-size:9px!important}
      .netdisk-header{padding:10px 12px!important}
      .netdisk-folders{padding:6px 12px!important}
      .netdisk-files{padding:6px 6px!important}
      .upload-dialog-body{padding:10px 12px!important}
      .mobile-topbar{padding:8px 12px!important}
      .mobile-topbar-title{font-size:14px!important}
      .sidebar-close-btn{left:calc(82vw - 10px)!important}
    }
    @media(min-width:769px){
      .mobile-topbar{display:none!important}
      .sidebar-close-btn{display:none!important}
    }

  .netdisk-pagination-perpage { display: inline-flex; align-items: center; gap: 4px; font-size: 13px; color: var(--text-secondary, #666); }
  .netdisk-pagination-perpage input:focus { outline: none; border-color: var(--c-primary, #1677ff); box-shadow: 0 0 0 2px rgba(22,119,255,0.15); }