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env(safe-area-inset-bottom, 0px)}*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body,#root{height:100%;width:100%;overflow:hidden}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;background:linear-gradient(135deg,#667eea,#764ba2);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}button,input,textarea{font-family:inherit}.app-frame{width:100%;height:100%;display:flex;justify-content:center;align-items:center}.app-phone{width:100%;height:100%;background:var(--bg-color);position:relative;overflow:hidden;display:flex;flex-direction:column}@media (min-width: 600px){.app-phone{width:390px;height:844px;border-radius:36px;box-shadow:0 25px 50px 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var(--border-color);flex-shrink:0;padding-bottom:var(--safe-area-bottom)}.tab-item{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;cursor:pointer;color:var(--text-secondary);font-size:10px;background:none;border:none;padding:6px 0}.tab-item.active{color:var(--primary-color)}.search-box{padding:10px 12px;background:var(--white)}.search-input-wrapper{display:flex;align-items:center;background:var(--bg-color);border-radius:10px;padding:8px 12px;gap:8px}.search-input{flex:1;border:none;background:none;font-size:15px;color:var(--text-primary);outline:none}.search-input::placeholder{color:var(--text-secondary)}.list-content{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch}.list-item{display:flex;align-items:center;padding:12px 16px;background:var(--white);cursor:pointer;gap:12px;position:relative}.list-item:active{background:var(--bg-color)}.list-item+.list-item{border-top:1px solid var(--border-color)}.list-item.pinned{background:#fafbfd}.list-item-content{flex:1;min-width:0;display:flex;flex-direction:column;gap:3px}.list-item-header{display:flex;justify-content:space-between;align-items:center}.list-item-name{font-size:15px;font-weight:500;color:var(--text-primary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.list-item-time{font-size:12px;color:var(--text-secondary);flex-shrink:0;margin-left:8px}.list-item-desc{font-size:13px;color:var(--text-secondary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:flex;justify-content:space-between;align-items:center}.unread-badge{min-width:18px;height:18px;background:var(--danger-color);color:#fff;font-size:11px;font-weight:600;border-radius:9px;display:inline-flex;align-items:center;justify-content:center;padding:0 5px;flex-shrink:0;margin-left:8px}.avatar{border-radius:10px;background:linear-gradient(135deg,var(--primary-color),#6B8DD6);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:600;flex-shrink:0;-webkit-user-select:none;user-select:none}.avatar.group{background:linear-gradient(135deg,#667eea,#764ba2)}.avatar.circle{border-radius:50%}.avatar.sm{width:36px;height:36px;font-size:14px}.avatar.md{width:44px;height:44px;font-size:16px}.avatar.lg{width:64px;height:64px;font-size:22px}.avatar.xl{width:80px;height:80px;font-size:28px}.btn-primary{width:100%;height:46px;background:var(--primary-color);color:#fff;border:none;border-radius:12px;font-size:16px;font-weight:600;cursor:pointer;transition:opacity .2s}.btn-primary:active{opacity:.8}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-secondary{width:100%;height:46px;background:var(--white);color:var(--primary-color);border:1px solid var(--primary-color);border-radius:12px;font-size:16px;font-weight:600;cursor:pointer;margin-top:12px}.btn-secondary:active{background:var(--primary-light)}.link-btn{background:none;border:none;color:var(--primary-color);font-size:14px;cursor:pointer;padding:0}.form-input{width:100%;height:46px;background:var(--white);border:1px solid var(--border-color);border-radius:12px;padding:0 16px;font-size:15px;color:var(--text-primary);outline:none;transition:border-color .2s}.form-input:focus{border-color:var(--primary-color)}.form-input::placeholder{color:var(--text-secondary)}.form-item{margin-bottom:14px}.modal-overlay{position:absolute;top:0;right:0;bottom:0;left:0;background:#00000080;display:flex;align-items:flex-end;justify-content:center;z-index:1000;animation:fadeIn .2s ease}.modal{background:var(--white);border-radius:16px 16px 0 0;width:100%;max-height:80%;overflow:hidden;animation:slideUp .3s ease;padding-bottom:var(--safe-area-bottom)}.modal-header{padding:14px;text-align:center;border-bottom:1px solid var(--border-color);position:relative}.modal-header h3{font-size:16px;font-weight:600;color:var(--text-primary)}.modal-close{position:absolute;right:14px;top:50%;transform:translateY(-50%);background:none;border:none;font-size:14px;color:var(--text-secondary);cursor:pointer}.modal-actions{padding:8px 14px 14px;display:flex;flex-direction:column;gap:8px}.modal-action{height:46px;display:flex;align-items:center;justify-content:center;gap:8px;border-radius:12px;font-size:15px;font-weight:500;cursor:pointer;border:none;background:var(--bg-color);color:var(--text-primary)}.modal-action:active{opacity:.8}.modal-action.primary{background:var(--primary-color);color:#fff}.modal-action.danger{background:#fff1f0;color:var(--danger-color)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{transform:translateY(100%)}to{transform:translateY(0)}}.toast{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);background:#000000c7;color:#fff;padding:12px 22px;border-radius:10px;font-size:14px;z-index:2000;animation:toastShow .2s ease;max-width:80%;text-align:center}@keyframes toastShow{0%{opacity:0;transform:translate(-50%,-50%) scale(.92)}to{opacity:1;transform:translate(-50%,-50%) scale(1)}}.empty-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px 20px;color:var(--text-secondary);gap:12px}.empty-state p{font-size:14px}