:root{--color-bg:#f0f2f5;--color-surface:#ffffffb8;--color-surface-solid:#fff;--color-text:#1a1a1a;--color-text-secondary:#555;--color-text-muted:#888;--color-border:#0000000f;--color-border-solid:#e5e5e5;--color-primary:#06c;--color-primary-hover:#0052a3;--color-primary-light:#0066cc0f;--color-primary-glow:#0066cc26;--color-xiake:#06c;--color-xiake-light:#0066cc1f;--color-xiapi:#e85d04;--color-xiapi-light:#e85d041f;--color-yue:#2e7d32;--color-yue-light:#2e7d321f;--color-success:#2e7d32;--color-error:#d32f2f;--color-warning:#ed6c02;--glass-bg:#ffffffb8;--glass-border:#0000000f;--glass-blur:16px;--space-1:3px;--space-2:6px;--space-3:10px;--space-4:14px;--space-5:18px;--space-6:22px;--radius-sm:4px;--radius-md:8px;--radius-lg:14px;--radius-full:999px;--font-sans:-apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;--text-xs:11px;--text-sm:13px;--text-base:15px;--text-lg:17px;--text-xl:20px;--transition:.15s ease;--transition-glow:.3s 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4px}.reply-to-icon{width:10px;height:10px;color:var(--color-primary);flex-shrink:0}.reply-to-text{color:var(--color-primary);text-overflow:ellipsis;white-space:nowrap;max-width:250px;font-size:10px;line-height:1.3;overflow:hidden}.loading-container{justify-content:center;align-items:center;gap:var(--space-3);flex-direction:column;padding:48px 0;display:flex}.loading-spinner{border:2px solid var(--glass-border);border-top-color:var(--color-primary);border-radius:50%;width:24px;height:24px;animation:.6s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.loading-text{font-size:var(--text-xs);color:var(--color-text-muted)}.empty-state{text-align:center;padding:48px 0}.empty-icon{margin-bottom:var(--space-2);justify-content:center;display:flex}.empty-title{font-size:var(--text-base);margin-bottom:var(--space-1);font-weight:600}.empty-text{font-size:var(--text-sm);color:var(--color-text-muted)}.error-card{border-color:var(--color-error)!important}@media (width<=640px){.main-content{padding:var(--space-2) var(--space-3)}.header{height:44px}.header-inner{padding:0 var(--space-3)}.header-title{font-size:var(--text-base)}.viewmode-btn span{display:none}.thread-card-header{padding:var(--space-3)}.thread-avatar{width:36px;height:36px}.thread-meta-row{gap:var(--space-1)}.participant-pill{padding:0 5px;font-size:9px}.message-bubble{max-width:85%;padding:var(--space-2) var(--space-3);font-size:var(--text-xs)}.reply-box{padding:var(--space-2)}.reply-textarea{min-height:48px;font-size:var(--text-xs)}.auto-refresh-toggle,.filter-tab span{display:none}.filter-tab svg{width:16px;height:16px}.approval-btn span{font-size:var(--text-xs)}}@media (width>=641px){.main-content{padding-top:var(--space-4)}}.modal-backdrop{z-index:1000;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#00000080;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.modal-content{background:var(--glass-bg);-webkit-backdrop-filter:blur(var(--glass-blur)) saturate(180%);backdrop-filter:blur(var(--glass-blur)) saturate(180%);border:1px solid var(--glass-border);border-radius:var(--radius-lg);width:min(480px,92vw);max-height:85vh;box-shadow:0 8px 32px #0003, 0 0 0 1px var(--glass-border);flex-direction:column;display:flex}.modal-header{padding:var(--space-4) var(--space-5);border-bottom:1px solid var(--glass-border);justify-content:space-between;align-items:center;display:flex}.modal-title{font-size:var(--text-lg);color:var(--color-text);margin:0;font-weight:600}.modal-close-btn{color:var(--color-text-muted);cursor:pointer;padding:var(--space-1);border-radius:var(--radius-sm);background:0 0;border:none;align-items:center;transition:color .15s,background .15s;display:flex}.modal-close-btn:hover{color:var(--color-text);background:var(--color-primary-light)}.modal-body{padding:var(--space-4) var(--space-5);gap:var(--space-3);flex-direction:column;flex:1;display:flex;overflow-y:auto}.modal-footer{padding:var(--space-3) var(--space-5);border-top:1px solid var(--glass-border);justify-content:space-between;align-items:center;gap:var(--space-3);display:flex}.compose-field{gap:var(--space-1);flex-direction:column;display:flex}.compose-label{font-size:var(--text-xs);color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.5px;font-weight:500}.compose-recipients{gap:var(--space-2);display:flex}.compose-recipient-btn{align-items:center;gap:var(--space-1);padding:var(--space-2) var(--space-3);border:1px solid var(--glass-border);border-radius:var(--radius-md);background:var(--glass-bg);color:var(--color-text-secondary);cursor:pointer;font-size:var(--text-sm);-webkit-backdrop-filter:blur(var(--glass-blur)) saturate(180%);backdrop-filter:blur(var(--glass-blur)) saturate(180%);transition:all .15s;display:flex}.compose-recipient-btn:hover{border-color:var(--color-primary);color:var(--color-text)}.compose-recipient-btn.active{border-color:var(--color-primary);background:var(--color-primary-light);color:var(--color-primary);box-shadow:0 0 8px var(--color-primary-glow)}.compose-recipient-btn svg{width:16px;height:16px}.compose-input{padding:var(--space-2) var(--space-3);border:1px solid var(--glass-border);border-radius:var(--radius-md);background:var(--glass-bg);-webkit-backdrop-filter:blur(var(--glass-blur)) saturate(180%);backdrop-filter:blur(var(--glass-blur)) saturate(180%);color:var(--color-text);font-size:var(--text-sm);outline:none;transition:border-color .15s,box-shadow .15s}.compose-input:focus{border-color:var(--color-primary);box-shadow:0 0 0 2px var(--color-primary-glow)}.compose-input::placeholder{color:var(--color-text-muted)}.compose-textarea{padding:var(--space-2) var(--space-3);border:1px solid var(--glass-border);border-radius:var(--radius-md);background:var(--glass-bg);-webkit-backdrop-filter:blur(var(--glass-blur)) saturate(180%);backdrop-filter:blur(var(--glass-blur)) saturate(180%);color:var(--color-text);font-size:var(--text-sm);resize:vertical;outline:none;min-height:120px;font-family:inherit;line-height:1.5;transition:border-color .15s,box-shadow .15s}.compose-textarea:focus{border-color:var(--color-primary);box-shadow:0 0 0 2px var(--color-primary-glow)}.compose-textarea::placeholder{color:var(--color-text-muted)}.compose-header-btn{border:1px solid var(--glass-border);border-radius:var(--radius-md);background:var(--glass-bg);width:32px;height:32px;-webkit-backdrop-filter:blur(var(--glass-blur)) saturate(180%);backdrop-filter:blur(var(--glass-blur)) saturate(180%);color:var(--color-text-secondary);cursor:pointer;justify-content:center;align-items:center;transition:all .15s;display:flex}.compose-header-btn:hover{color:var(--color-primary);border-color:var(--color-primary);background:var(--color-primary-light);box-shadow:0 0 8px var(--color-primary-glow)}.compose-header-btn svg{width:16px;height:16px}.pending-attachment-item{align-items:center;gap:var(--space-1);padding:var(--space-1) var(--space-2);background:var(--glass-bg);-webkit-backdrop-filter:blur(var(--glass-blur)) saturate(180%);backdrop-filter:blur(var(--glass-blur)) saturate(180%);border:1px solid var(--glass-border);border-radius:var(--radius-sm);font-size:var(--text-xs);color:var(--color-text-secondary);display:flex}.pending-attachment-item .attachment-name{text-overflow:ellipsis;white-space:nowrap;max-width:200px;overflow:hidden}.pending-attachment-item .attachment-size{color:var(--color-text-muted)}.pending-attachment-item .remove-attachment-btn{color:var(--color-text-muted);cursor:pointer;background:0 0;border:none;align-items:center;margin-left:auto;padding:0;transition:color .15s;display:flex}.pending-attachment-item .remove-attachment-btn:hover{color:var(--color-error)}.pending-attachment-item .remove-attachment-btn svg{width:12px;height:12px}.animate-slide-up{animation:.2s ease-out slideUp}::-webkit-scrollbar{width:3px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--color-text-muted);border-radius:2px}::-webkit-scrollbar-thumb:hover{background:var(--color-text-secondary)}