:root{--bg-primary: #0f0f0f;--bg-secondary: #1a1a1a;--bg-tertiary: #242424;--bg-hover: #2a2a2a;--bg-active: #333333;--border: #2a2a2a;--border-light: #333333;--text-primary: #e8e8e8;--text-secondary: #999999;--text-tertiary: #666666;--accent: #5B9FED;--accent-hover: #4A8FDD;--accent-bg: rgba(91, 159, 237, .1);--danger: #E86347;--danger-hover: #d44d33;--success: #4CAF50;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--shadow: 0 2px 8px rgba(0, 0, 0, .3);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .5);--transition: .2s cubic-bezier(.4, 0, .2, 1)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;overflow-x:hidden}.header{display:flex;align-items:center;justify-content:space-between;padding:0 32px;height:64px;background:var(--bg-secondary);border-bottom:1px solid 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.btn{flex:1;min-height:44px}.breadcrumb{margin-bottom:14px}.file-item.list,.file-list-header{grid-template-columns:minmax(0,1fr) 72px 84px 44px}.col-actions{display:flex;justify-content:flex-end}.col-actions .icon-btn:first-child{display:none}.file-list-header .col-actions{display:block}.file-item.list .col-name{min-width:0}.file-name{overflow:hidden;text-overflow:ellipsis}input,textarea,select,.chat-main-input textarea,.chat-main-input input{font-size:16px}.dropdown-menu button{min-height:44px}}@media (max-width: 480px){.file-item.list,.file-list-header{grid-template-columns:minmax(0,1fr) 72px 44px}.file-list.grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}}@media (max-width: 400px){.main-content{padding-left:max(10px,env(safe-area-inset-left));padding-right:max(10px,env(safe-area-inset-right))}.header{column-gap:4px}.file-item.grid{padding:12px 10px 10px}.file-thumb{height:64px}}@media (max-width: 360px){.logo-text{font-size:15px}.logo-icon{font-size:20px}.admin-panel-btn,.access-btn,.logout-btn{width:34px;height:34px}.view-btn{width:34px;height:36px}.header-center{flex-basis:calc(100% - 82px)}.header-nav-btn{font-size:10.5px}.file-item.list,.file-list-header{grid-template-columns:minmax(0,1fr) 64px 40px}.file-list.grid{gap:8px}.upload-text{font-size:14px}}@media (max-height: 500px) and (orientation: landscape) and (max-width: 1100px){:root{--tabbar-h: calc(46px + env(safe-area-inset-bottom)) }.header-nav-btn{min-height:36px;flex-direction:row;gap:6px;font-size:12px}.header-nav-btn>svg{font-size:17px}.header-nav-badge{position:static}.upload-zone{padding:12px}.upload-icon{display:none}}@media (max-width: 768px){.admin-overlay{align-items:flex-end}.admin-panel{width:100%;max-width:100%;max-height:92vh;max-height:92dvh;border-radius:16px 16px 0 0;padding-bottom:env(safe-area-inset-bottom)}.admin-header{padding:14px 16px;gap:8px}.admin-header-left{min-width:0;flex-wrap:wrap;gap:6px 8px}.admin-header-left h2{font-size:17px;white-space:nowrap}.admin-header-right{flex-shrink:0}.admin-refresh-btn{white-space:nowrap;min-height:36px}.admin-user-list{padding:6px 10px}.admin-list-header{display:none}.admin-user-item,.admin-user-item:hover{grid-template-columns:auto minmax(0,1fr) auto;grid-template-areas:"name name actions" "role wt status" "storage storage storage";gap:10px 10px;padding:14px 8px;border-bottom:1px solid var(--border);border-radius:0;background:transparent}.admin-user-name{grid-area:name;min-width:0}.admin-user-role{grid-area:role}.admin-user-wt{grid-area:wt;display:block}.admin-user-status{grid-area:status;display:block;text-align:right;font-size:12px}.admin-user-storage{grid-area:storage;display:block}.admin-user-date{display:none}.admin-user-actions{grid-area:actions}.admin-action-btn{white-space:nowrap;min-height:34px;padding:0 12px}.wt-toggle{min-height:30px}.admin-quota-btn{min-height:28px;padding:0 10px}.admin-quota-edit{flex-wrap:wrap;row-gap:6px}.admin-quota-edit input{font-size:16px}}@media (max-width: 768px){.app:has(.chat-3col.view-chat){--tabbar-h: env(safe-area-inset-bottom)}.app:has(.chat-3col.view-chat) .header-nav{display:none}}@media (max-width: 768px) and (max-height: 700px){.upload-zone{padding:12px 16px}.upload-icon{font-size:26px;margin-bottom:4px}.upload-hint{display:none}}@media (max-width: 768px){.access-overlay,.share-overlay{align-items:flex-end}.access-panel,.share-modal{width:100%;max-width:100%;max-height:92vh;max-height:92dvh;border-radius:16px 16px 0 0;padding-bottom:env(safe-area-inset-bottom)}.access-active{max-height:34vh;overflow-y:auto;flex-shrink:0}.active-session-item{flex-wrap:wrap;row-gap:2px;padding:8px 10px}.active-info{order:5;flex-basis:100%;padding-left:18px;font-size:11px;color:var(--text-tertiary)}.active-time{margin-left:auto;white-space:nowrap}.kick-btn{min-width:32px;min-height:32px}.log-time{white-space:nowrap}.share-modal select,.share-modal input{font-size:16px}}@media (max-width: 768px) and (max-height: 500px) and (orientation: landscape){.header-center{order:2;flex:1 1 160px}.header-right>.view-toggle{order:3}.header-right>.storage-info{display:none}.header-right>*{order:4}}.app-toggles{display:flex;flex-wrap:wrap;gap:4px}.app-toggles .wt-toggle{font-size:11px;padding:2px 7px 2px 5px}