*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei',sans-serif;background:#F7F8FC;color:#1a1a2e;min-height:100vh;-webkit-font-smoothing:antialiased}
.navbar{background:rgba(255,255,255,0.85);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid rgba(0,0,0,0.06);position:sticky;top:0;z-index:40;padding:12px 16px}
.navbar-inner{max-width:900px;margin:0 auto;display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:10px}
.logo-icon{width:36px;height:36px;border-radius:12px;background:linear-gradient(135deg,#FF6B35,#FF8F5E);display:flex;align-items:center;justify-content:center;font-size:18px;animation:float 3s ease-in-out infinite}
.logo-text{font-size:18px;font-weight:700;color:#1a1a2e}
.nav-right{display:flex;align-items:center;gap:8px}
.nav-btn{background:transparent;border:none;border-radius:10px;padding:8px 14px;font-size:13px;font-weight:500;cursor:pointer;display:flex;align-items:center;gap:5px;color:#6b7280;transition:all .2s}
.nav-btn:hover{background:#f3f4f6;color:#1a1a2e}
.nav-btn-primary{background:linear-gradient(135deg,#FF6B35,#FF8F5E);color:#fff;border:none;border-radius:10px;padding:8px 18px;font-size:13px;font-weight:600;cursor:pointer;display:flex;align-items:center;gap:5px;transition:all .25s}
.nav-btn-primary:hover{box-shadow:0 4px 14px rgba(255,107,53,0.35);transform:translateY(-1px)}
.nav-avatar{width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,#FF6B35,#FF8F5E,#4ECDC4);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:13px}
.nav-user{display:flex;align-items:center;gap:8px;padding:4px 8px;border-radius:10px;cursor:pointer;transition:background .2s}
.nav-user:hover{background:#f3f4f6}
.nav-user-name{font-size:13px;font-weight:500;color:#374151;max-width:80px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.badge-dot{position:absolute;top:-2px;right:-2px;width:16px;height:16px;border-radius:50%;background:#EF4444;color:#fff;font-size:9px;font-weight:700;display:flex;align-items:center;justify-content:center}
.main{max-width:900px;margin:0 auto;padding:20px 16px}
.card{background:#fff;border-radius:16px;border:1px solid rgba(0,0,0,0.04);box-shadow:0 1px 3px rgba(0,0,0,0.04),0 4px 12px rgba(0,0,0,0.03);padding:16px;transition:box-shadow .25s,transform .25s}
.card:hover{box-shadow:0 2px 8px rgba(0,0,0,0.06),0 8px 24px rgba(0,0,0,0.06);transform:translateY(-2px)}
.input{background:#F7F8FC;border:1.5px solid transparent;border-radius:10px;padding:10px 14px;font-size:14px;width:100%;outline:none;color:#1a1a2e;transition:all .2s}
.input::placeholder{color:#9ca3af}
.input:focus{border-color:#FF6B35;background:#fff;box-shadow:0 0 0 3px rgba(255,107,53,0.08)}
.btn{border:none;border-radius:10px;padding:8px 16px;font-size:13px;font-weight:600;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:5px;transition:all .2s}
.btn:active{transform:scale(0.97)}
.btn-orange{background:linear-gradient(135deg,#FF6B35,#FF8F5E);color:#fff}
.btn-orange:hover{box-shadow:0 4px 14px rgba(255,107,53,0.35)}
.btn-blue{background:#EFF6FF;color:#2563EB}
.btn-blue:hover{background:#DBEAFE}
.btn-green{background:#ECFDF5;color:#059669}
.btn-red{background:#FEF2F2;color:#DC2626}
.btn-red:hover{background:#FEE2E2}
.btn-gray{background:#f3f4f6;color:#6b7280}
.btn-gray:hover{background:#e5e7eb}
.btn-full{width:100%;padding:12px;border-radius:12px;font-size:15px}
.btn-sm{padding:6px 12px;font-size:12px;border-radius:8px}
.avatar{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,#FF6B35,#FF8F5E,#4ECDC4);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:18px;flex-shrink:0;overflow:hidden}
.avatar img{width:100%;height:100%;object-fit:cover}
.avatar-sm{width:34px;height:34px;font-size:13px}
.tag{display:inline-flex;align-items:center;padding:2px 8px;border-radius:6px;font-size:11px;font-weight:600}
.tag-green{background:#ECFDF5;color:#059669}
.tag-blue{background:#EFF6FF;color:#2563EB}
.tag-gray{background:#f3f4f6;color:#6b7280}
.tag-red{background:#FEF2F2;color:#DC2626}
.tag-orange{background:#FFF3ED;color:#FF6B35}
.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,0.4);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:65;animation:fadeIn .2s;padding:16px}
.modal{background:#fff;border-radius:20px;padding:28px;max-width:420px;width:100%;max-height:85vh;overflow-y:auto;animation:scaleIn .25s;box-shadow:0 20px 60px rgba(0,0,0,0.15)}
.modal-lg{max-width:520px}
.modal-header{display:flex;align-items:center;gap:10px;margin-bottom:20px}
.modal-title{font-size:18px;font-weight:700;color:#1a1a2e}
.modal-close{margin-left:auto;background:none;border:none;padding:6px;border-radius:8px;cursor:pointer;color:#9ca3af;font-size:18px}
.modal-close:hover{background:#f3f4f6;color:#374151}
.form-group{margin-bottom:14px}
.form-label{display:block;font-size:11px;font-weight:600;color:#6b7280;margin-bottom:6px;text-transform:uppercase;letter-spacing:0.5px}
.form-error{background:#FEF2F2;border:1px solid #FECACA;color:#DC2626;font-size:13px;padding:10px 14px;border-radius:12px;margin-bottom:14px;font-weight:500}
.form-hint{font-size:11px;color:#9ca3af;margin-top:4px}
.tabs{display:flex;gap:4px;background:#F7F8FC;border-radius:12px;padding:4px;margin-bottom:16px}
.tab{flex:1;display:flex;align-items:center;justify-content:center;gap:6px;padding:8px 12px;border-radius:10px;font-size:12px;font-weight:600;border:none;cursor:pointer;transition:all .2s;background:transparent;color:#9ca3af}
.tab.active{background:#fff;color:#FF6B35;box-shadow:0 1px 3px rgba(0,0,0,0.08)}
.tab:hover:not(.active){color:#374151}
.tab-badge{background:#EF4444;color:#fff;font-size:9px;font-weight:700;border-radius:50%;width:16px;height:16px;display:flex;align-items:center;justify-content:center}
.section-label{font-size:11px;font-weight:600;color:#9ca3af;margin-bottom:8px;text-transform:uppercase;letter-spacing:0.5px}
.list-item{display:flex;align-items:center;gap:12px;padding:12px;background:#F7F8FC;border-radius:12px;margin-bottom:8px}
.list-item-info{flex:1;min-width:0}
.list-item-name{font-size:13px;font-weight:600;color:#1a1a2e;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.list-item-email{font-size:11px;color:#9ca3af;margin-top:2px}
.list-item-bio{font-size:11px;color:#9ca3af;margin-top:2px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.user-card{padding:16px}
.user-card-top{display:flex;align-items:flex-start;gap:12px}
.user-card-info{flex:1;min-width:0}
.user-card-name{font-size:15px;font-weight:600;color:#1a1a2e}
.user-card-id{font-size:12px;color:#9ca3af;margin-top:3px}
.user-card-bio{font-size:11px;color:#9ca3af;margin-top:4px;word-break:break-all;white-space:pre-wrap}
.bio-collapsible{max-height:2.8em;overflow:hidden;transition:max-height .3s ease;cursor:pointer;position:relative}
.bio-collapsible.expanded{max-height:500px}
.bio-collapse-btn{font-size:11px;color:#FF6B35;cursor:pointer;background:none;border:none;padding:2px 0;display:block}
.user-card-actions{display:flex;gap:8px;margin-top:12px;padding-top:12px;border-top:1px solid rgba(0,0,0,0.05)}
.search-wrap{position:relative}
.search-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:#9ca3af}
.search-input{padding-left:40px}
.search-count{margin-top:10px;font-size:12px;color:#9ca3af;font-weight:500}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
@media(max-width:640px){.grid-2,.grid-3{grid-template-columns:1fr}.nav-user-name{display:none}}
.welcome{text-align:center;padding:32px 24px}
.welcome-icon{width:64px;height:64px;border-radius:20px;background:linear-gradient(135deg,#FF6B35,#FF8F5E);display:flex;align-items:center;justify-content:center;margin:0 auto 20px;font-size:32px;box-shadow:0 4px 16px rgba(255,107,53,0.3);animation:float 3s ease-in-out infinite}
.welcome h2{font-size:24px;font-weight:700;color:#1a1a2e;margin-bottom:8px}
.welcome p{font-size:14px;color:#9ca3af;max-width:360px;margin:0 auto}
.feature-card{text-align:center;padding:16px}
.feature-icon{width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;margin:0 auto 10px;font-size:20px}
.feature-card h3{font-size:13px;font-weight:600;color:#1a1a2e}
.feature-card p{font-size:11px;color:#9ca3af;margin-top:4px}
.friend-row{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:12px;cursor:default}
.friend-row-info{flex:1;min-width:0}
.friend-row-name{font-size:13px;font-weight:600;color:#1a1a2e;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.friend-row-id{font-size:11px;color:#9ca3af;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.toast-container{position:fixed;top:16px;right:16px;z-index:100;display:flex;flex-direction:column;gap:8px}
.toast{display:flex;align-items:center;gap:10px;padding:12px 16px;border-radius:12px;box-shadow:0 4px 16px rgba(0,0,0,0.1);font-size:13px;font-weight:500;animation:slideInDown .3s;min-width:240px;max-width:360px}
.toast-success{background:#ECFDF5;border:1px solid #A7F3D0;color:#065F46}
.toast-error{background:#FEF2F2;border:1px solid #FECACA;color:#991B1B}
.toast-info{background:#EFF6FF;border:1px solid #BFDBFE;color:#1E40AF}
.toast-warning{background:#FFFBEB;border:1px solid #FDE68A;color:#92400E}
.toast-close{background:none;border:none;cursor:pointer;color:#9ca3af;padding:2px;border-radius:4px;font-size:14px}
.toast-close:hover{background:rgba(0,0,0,0.05)}
.empty{text-align:center;padding:32px 16px}
.empty-icon{font-size:40px;margin-bottom:8px}
.empty-text{font-size:13px;color:#9ca3af}
.rule{display:flex;gap:12px;padding:12px;background:#F7F8FC;border-radius:12px;margin-bottom:10px}
.rule-num{width:24px;height:24px;border-radius:8px;background:#FF6B35;color:#fff;font-size:11px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:2px}
.rule-text{font-size:13px;color:#4b5563;line-height:1.6}
.footer{text-align:center;padding:20px;font-size:12px;color:#d1d5db}
.status-dot{width:8px;height:8px;border-radius:50%;background:#4ECDC4;animation:pulse 2s ease-in-out infinite}
.notification-item{padding:12px;border-radius:12px;margin-bottom:8px;font-size:13px}
.notification-warning{background:#FFFBEB;border:1px solid #FDE68A;color:#92400E}
.notification-error{background:#FEF2F2;border:1px solid #FECACA;color:#991B1B}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes fadeInUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}
@keyframes scaleIn{from{opacity:0;transform:scale(0.95)}to{opacity:1;transform:scale(1)}}
@keyframes slideInDown{from{opacity:0;transform:translateY(-12px)}to{opacity:1;transform:translateY(0)}}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-5px)}}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:0.5}}
.anim-up{animation:fadeInUp .35s ease-out both}
.anim-up-d1{animation:fadeInUp .35s ease-out .1s both}
.anim-up-d2{animation:fadeInUp .35s ease-out .2s both}
.anim-up-d3{animation:fadeInUp .35s ease-out .3s both}
::-webkit-scrollbar{width:5px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:#d1d5db;border-radius:10px}
.hidden{display:none!important}
.login-required{text-align:center;padding:60px 20px}
.login-required h3{font-size:20px;font-weight:700;color:#1a1a2e;margin-bottom:12px}
.login-required p{font-size:14px;color:#9ca3af;margin-bottom:24px}
.warning-box{background:#FFFBEB;border:1px solid #FDE68A;border-radius:12px;padding:16px;margin-bottom:16px;color:#92400E;font-size:13px}
.danger-box{background:#FEF2F2;border:1px solid #FECACA;border-radius:12px;padding:16px;margin-bottom:16px;color:#991B1B;font-size:13px}
.chat-panel{position:fixed;top:0;left:0;right:0;bottom:0;z-index:55;background:#F7F8FC;display:none;flex-direction:column;animation:fadeIn .2s}
.dark .chat-panel{background:#1a1a2e}
.chat-panel.show{display:flex}
.chat-header{background:#fff;border-bottom:1px solid rgba(0,0,0,.06);padding:10px 16px;display:flex;align-items:center;gap:10px;height:54px;z-index:2}
.dark .chat-header{background:#2a2a3e;border-color:rgba(255,255,255,.06)}
.chat-body{flex:1;display:flex;overflow:hidden;min-height:0}
.chat-room-list{width:280px;background:#fff;border-right:1px solid #e5e7eb;flex-shrink:0;display:flex;flex-direction:column}
.dark .chat-room-list{background:#2a2a3e;border-color:#374151}
.chat-room-item{display:flex;align-items:center;gap:10px;padding:12px 14px;cursor:pointer;transition:background .15s;border-bottom:1px solid #f3f4f6}
.dark .chat-room-item{border-color:#374151}
.chat-room-item:hover{background:#f3f4f6}
.dark .chat-room-item:hover{background:#3a3a4e}
.chat-room-item.active{background:rgba(255,107,53,.08);border-left:3px solid #FF6B35}
.chat-room-avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,#FF6B35,#FF8F5E);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:15px;flex-shrink:0;overflow:hidden}
.chat-room-avatar img{width:100%;height:100%;object-fit:cover}
.chat-room-info{flex:1;min-width:0}
.chat-room-name{font-size:13px;font-weight:600;color:#1a1a2e;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.dark .chat-room-name{color:#e5e7eb}
.chat-room-preview{font-size:11px;color:#9ca3af;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;margin-top:2px}
.chat-room-unread{background:#EF4444;color:#fff;font-size:10px;font-weight:700;min-width:18px;height:18px;border-radius:9px;display:flex;align-items:center;justify-content:center;padding:0 5px}
.chat-main{flex:1;display:flex;flex-direction:column;min-width:0}
.chat-msgs{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:8px}
.chat-msg{max-width:75%;word-break:break-word;line-height:1.45;position:relative}
.chat-msg-left{align-self:flex-start}
.chat-msg-right{align-self:flex-end}
.chat-msg-bubble{padding:10px 14px;border-radius:14px;font-size:13px;position:relative}
.chat-msg-left .chat-msg-bubble{background:#fff;border:1px solid #e5e7eb;border-bottom-left-radius:4px}
.chat-msg-right .chat-msg-bubble{background:linear-gradient(135deg,#FF6B35,#FF8F5E);color:#fff;border-bottom-right-radius:4px}
.dark .chat-msg-left .chat-msg-bubble{background:#2a2a3e;border-color:#374151;color:#e5e7eb}
.chat-msg-sender{font-size:11px;font-weight:600;color:#FF6B35;margin-bottom:3px}
.chat-msg-time{font-size:10px;color:#9ca3af;margin-top:4px;text-align:right}
.chat-msg-right .chat-msg-time{color:rgba(255,255,255,.6)}
.chat-msg-reply{font-size:11px;padding:6px 8px;border-radius:8px;margin-bottom:4px;opacity:.7;background:rgba(0,0,0,.05);border-left:3px solid #FF6B35;cursor:pointer}
.chat-msg-right .chat-msg-reply{background:rgba(255,255,255,.15);border-color:rgba(255,255,255,.4)}
.chat-input-area{padding:10px 16px;background:#fff;border-top:1px solid #e5e7eb;display:flex;gap:8px;align-items:flex-end}
.dark .chat-input-area{background:#2a2a3e;border-color:#374151}
.chat-input{flex:1;border:1.5px solid #e5e7eb;border-radius:12px;padding:10px 14px;font-size:13px;resize:none;outline:none;max-height:120px;min-height:42px;background:transparent;color:#1a1a2e;transition:border-color .2s}
.dark .chat-input{color:#e5e7eb;border-color:#374151}
.chat-input:focus{border-color:#FF6B35}
.chat-send-btn{width:42px;height:42px;border-radius:12px;border:none;background:linear-gradient(135deg,#FF6B35,#FF8F5E);color:#fff;font-size:16px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s;flex-shrink:0}
.chat-send-btn:hover{box-shadow:0 4px 14px rgba(255,107,53,.35);transform:translateY(-1px)}
.chat-send-btn:disabled{opacity:.4;cursor:default;transform:none;box-shadow:none}
.chat-empty{flex:1;display:flex;align-items:center;justify-content:center;text-align:center;padding:32px;color:#9ca3af;font-size:14px}
.chat-reply-bar{display:flex;align-items:center;gap:8px;padding:8px 16px;background:#f3f4f6;border-top:1px solid #e5e7eb;font-size:12px;color:#6b7280}
.dark .chat-reply-bar{background:#3a3a4e;border-color:#4b5563;color:#9ca3af}
.chat-reply-bar .close-reply{background:none;border:none;color:#9ca3af;cursor:pointer;font-size:14px;padding:2px 4px}
.chat-stranger-warn{font-size:11px;color:#EF4444;padding:6px 16px;text-align:center;background:#FEF2F2;border-top:1px solid #FECACA}
.dark .chat-stranger-warn{background:#7F1D1D;border-color:#991B1B;color:#FECACA}
.chat-new-channel{margin:12px 14px;padding:10px;border:2px dashed #d1d5db;border-radius:12px;text-align:center;cursor:pointer;font-size:12px;color:#9ca3af;transition:all .2s}
.chat-new-channel:hover{border-color:#FF6B35;color:#FF6B35;background:rgba(255,107,53,.04)}
.chat-action-btn{width:34px;height:34px;border-radius:10px;border:none;background:#f3f4f6;color:#6b7280;font-size:16px;cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:all .2s}
.chat-action-btn:hover{background:#e5e7eb}
.dark .chat-action-btn{background:#3a3a4e;color:#9ca3af}
.dark .chat-action-btn:hover{background:#4b5563}
.chat-recall-btn{background:transparent;border:none;color:#fff;font-size:10px;cursor:pointer;padding:2px 4px;border-radius:4px;transition:all .2s}
.chat-recall-btn:hover{background:rgba(255,107,53,0.1);color:#FF6B35}
.chat-msg-left .chat-recall-btn{color:rgba(255,107,53,0.7)}
.chat-msg img{border-radius:8px;max-width:200px;max-height:200px;display:block}
.chat-msg a{color:#FF6B35;text-decoration:underline;word-break:break-all}
.chat-msg .file-link{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;background:rgba(255,107,53,0.1);border-radius:8px;text-decoration:none;color:#FF6B35;font-size:12px}
.chat-msg-right .file-link{background:rgba(255,255,255,0.15)}
.nav-badge{position:absolute;top:-4px;right:-6px;min-width:16px;height:16px;border-radius:8px;background:#EF4444;color:#fff;font-size:9px;font-weight:700;display:flex;align-items:center;justify-content:center;padding:0 4px;box-shadow:0 2px 4px rgba(239,68,68,.3)}
@media(max-width:767px){.chat-room-list{position:fixed;top:54px;left:0;right:0;bottom:0;z-index:10;transform:translateX(-100%);transition:transform .25s;width:260px}.chat-room-list.show{transform:translateX(0)}.chat-msg{max-width:88%}.chat-header .chat-show-list{display:block!important}.chat-main,.chat-msgs{width:100%}}