:root{--nur-green: #00802A;--nur-green-light: #D9F2DF;--nur-green-shadow: rgba(30, 137, 37, .25);--text-primary: #333333;--text-secondary: #737373;--text-muted: #8B8B8B;--bg-page: #ffffff;--bg-sidebar: #ffffff;--border-color: #e5e7eb;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.5;font-weight:400;color:var(--text-primary);background-color:var(--bg-page);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box}body{margin:0;min-height:100vh;overflow:hidden}#root{min-height:100vh}.xxh-admin-loading{width:28px;height:28px;display:grid;grid-gap:8px;grid-template-rows:repeat(2,1fr);grid-template-columns:repeat(2,1fr);transform:rotate(45deg);animation:loadingRotate 1.2s infinite linear;position:fixed;top:calc(50% - 14px);left:calc(50% - 14px)}.xxh-admin-loading>i{border-radius:50%;background:#409eff}.xxh-admin-loading>i:nth-child(2){opacity:.7}.xxh-admin-loading>i:nth-child(3){opacity:.5}.xxh-admin-loading>i:nth-child(4){opacity:.3}@keyframes loadingRotate{to{transform:rotate(405deg)}}button{font-family:inherit;cursor:pointer;border:none;background:none}input,textarea{font-family:inherit}.xxh-ellipsis{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.layout-content{display:flex;height:100vh;overflow:hidden}.left-menu{width:280px;min-width:280px;display:flex;flex-direction:column;background:var(--bg-sidebar);border-right:1px solid var(--border-color);flex-shrink:0}.chat-list-container{display:flex;flex-direction:column;flex:1;min-height:0}.chat-header{padding:16px;display:flex;align-items:center;justify-content:space-between;flex-shrink:0;border-bottom:1px solid var(--border-color)}.logo-link{cursor:pointer;font-size:1.25rem;font-weight:700;color:var(--nur-green);text-decoration:none}.header-icon{width:24px;height:24px;color:var(--text-muted);cursor:pointer;padding:4px}.new-chat-btn{margin:16px;flex-shrink:0;cursor:pointer;display:block}.new-chat-btn svg{width:100%;max-width:214px;height:auto;display:block;filter:drop-shadow(0 4px 2px var(--nur-green-shadow)) drop-shadow(0 6px 4px rgba(0,0,0,.1))}.new-chat-btn:hover svg{opacity:.95}.chat-list{flex:1;min-height:0;overflow-y:auto;padding:0 12px 12px;margin-top:8px}.chat-list-row{margin-bottom:16px}.row-title{font-size:.75rem;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.02em;margin-bottom:8px;padding:0 8px}.row-content{display:flex;align-items:center;gap:8px;padding:10px 12px;border-radius:8px;cursor:pointer;margin-bottom:2px}.row-content:hover{background:var(--nur-green-light)}.row-content.active{background:var(--nur-green-light);color:var(--nur-green)}.row-content .title{flex:1;min-width:0;font-size:.875rem}.row-content .menu-trigger{width:24px;height:24px;padding:0;opacity:.6;flex-shrink:0}.row-content .menu-trigger:hover{opacity:1}.user-btn{padding:12px 16px;border-top:1px solid var(--border-color);display:flex;align-items:center;gap:12px;flex-shrink:0}.user-avatar{width:40px;height:40px;border-radius:50%;background:var(--nur-green);display:flex;align-items:center;justify-content:center;color:#fff;flex-shrink:0}.user-name{flex:1;font-size:.9375rem;font-weight:600;min-width:0;overflow:hidden;text-overflow:ellipsis}.logout-icon{width:24px;height:24px;color:var(--text-primary);cursor:pointer;flex-shrink:0}.main-content{flex:1;display:flex;flex-direction:column;min-width:0;max-width:100vw}.chat-container{flex:1;display:flex;flex-direction:column;min-height:0}.new-chat-container{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:24px;min-height:0}.new-chat-content{width:100%;max-width:640px;display:flex;flex-direction:column;align-items:center;gap:24px}.new-chat-icon-img{font-size:1.75rem;font-weight:700;color:var(--nur-green);margin-bottom:8px;cursor:pointer}.input-box{width:100%;max-width:640px}.user-input-box{background:#f5f5f5;border:1px solid var(--border-color);border-radius:12px;padding:12px 16px;transition:border-color .2s,box-shadow .2s}.user-input-box:focus-within{border-color:var(--nur-green);box-shadow:0 0 0 2px var(--nur-green-light)}.user-input-container textarea{width:100%;min-height:56px;resize:none;border:none;background:transparent;font-size:1rem;line-height:1.5;color:var(--text-primary);outline:none}.user-input-container textarea::placeholder{color:var(--text-secondary)}.action-bar{display:flex;align-items:center;gap:8px;margin-top:8px;flex-wrap:wrap}.action-btn{width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:8px;color:var(--text-primary);cursor:pointer}.action-btn:hover{background:#0000000f}.submit-btn-icon{width:40px;height:40px;border-radius:50%;background:var(--nur-green);color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;margin-left:auto}.submit-btn-icon:disabled{opacity:.5;cursor:not-allowed}.submit-btn-icon:not(:disabled):hover{background:#062}.model-switch-container{display:flex;flex-direction:column;align-items:center;gap:12px;margin-top:8px}.model-switch-text{font-size:.875rem;color:var(--text-secondary)}.switch-btn-box{cursor:pointer}.switch-btn-box svg{max-width:200px;height:auto;display:block}.custom-btn{padding:10px 20px;border-radius:9999px;background:var(--nur-green);color:#fff;font-size:.9375rem;font-weight:500;cursor:pointer;display:inline-flex;align-items:center;gap:8px;margin-top:16px;box-shadow:0 4px 14px var(--nur-green-shadow)}.custom-btn:hover{background:#062}.button-content{display:flex;align-items:center;gap:8px}.pay-tip{font-size:.8125rem;color:var(--text-secondary);margin-top:12px;text-align:center}.left-msg{font-weight:600;color:var(--nur-green)}.pay-upgrade{color:var(--nur-green);cursor:pointer;text-decoration:underline}.pay-upgrade:hover{color:#062}.link-box{display:flex;gap:16px;justify-content:center;padding:16px;flex-wrap:wrap}.link-item{font-size:.8125rem;color:var(--text-secondary);text-decoration:none}.link-item:hover{color:var(--nur-green)}.chat-input-panel{padding:16px 24px 24px;background:var(--bg-page);border-top:1px solid var(--border-color);flex-shrink:0}.page-tip{font-size:.75rem;color:var(--text-secondary);text-align:center;padding:8px 16px}.right-panel{flex:1;display:flex;flex-direction:column;min-height:0}.right-panel.with-chat{justify-content:flex-start}.right-panel.empty{justify-content:center}.list-content{flex:1;overflow-y:auto;padding:20px 16px 80px}.scroll-action-bar{display:flex;gap:12px;padding:8px 0}.language-switch{display:flex;align-items:center;gap:8px;padding:8px 16px;font-size:.75rem;font-weight:600;color:var(--nur-green);cursor:pointer}.language-switch svg{width:24px;height:24px}