:root{
  --navy:#0d2f4f;--navy-2:#123e65;--teal:#1e827f;--teal-2:#2ea6a0;
  --bg:#eef3f7;--panel:#fff;--line:#dfe7ee;--text:#152235;--muted:#6f7d8f;
  --danger:#b53a3a;--warning:#a76c08;--shadow:0 18px 45px rgba(15,35,55,.12);
}
*{box-sizing:border-box}html,body{margin:0;height:100%;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--text);background:var(--bg)}
button,input,textarea{font:inherit}button{cursor:pointer}a{color:inherit;text-decoration:none}.hidden{display:none!important}
.topbar{height:72px;background:linear-gradient(135deg,var(--navy),var(--navy-2));color:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 22px;box-shadow:0 6px 18px rgba(13,47,79,.18);position:relative;z-index:10}
.brand{display:flex;align-items:center;gap:12px}.brand-mark{width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,#2da09b,#54beb7);display:grid;place-items:center;box-shadow:inset 0 0 0 1px rgba(255,255,255,.24)}
.brand-mark svg{width:24px;height:24px}.brand-title{font-size:19px;font-weight:750;letter-spacing:.5px}.brand-subtitle{font-size:12px;opacity:.76;margin-top:2px}.top-actions{display:flex;align-items:center;gap:10px}.top-link{border:1px solid rgba(255,255,255,.25);background:rgba(255,255,255,.08);color:#fff;border-radius:10px;padding:9px 13px}.top-link:hover{background:rgba(255,255,255,.15)}
.card{background:var(--panel);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}
.btn{border:0;border-radius:10px;padding:10px 16px;font-weight:650;transition:.18s ease}.btn-primary{background:linear-gradient(135deg,var(--teal),var(--teal-2));color:#fff}.btn-primary:hover{filter:brightness(1.04);transform:translateY(-1px)}.btn-secondary{background:#edf3f6;color:#30445b}.btn-danger{background:#fff0f0;color:var(--danger);border:1px solid #f1caca}.btn-ghost{background:transparent;color:var(--muted);border:1px solid var(--line)}.btn:disabled{opacity:.55;cursor:not-allowed;transform:none}
.input,.textarea{width:100%;border:1px solid #cdd8e2;border-radius:11px;background:#fff;padding:11px 13px;color:var(--text);outline:none;transition:.18s}.input:focus,.textarea:focus{border-color:var(--teal);box-shadow:0 0 0 3px rgba(30,130,127,.12)}.textarea{min-height:104px;resize:vertical}.label{display:block;font-weight:700;margin:0 0 7px}.help{font-size:12px;color:var(--muted);margin-top:6px}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}.form-group{margin-bottom:16px}
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 9px;border-radius:999px;font-size:12px;font-weight:700;background:#e8f7f5;color:#176b68}.badge-danger{background:#fff0f0;color:#a93434}.badge-muted{background:#edf1f4;color:#647285}
.toast-wrap{position:fixed;right:18px;top:88px;z-index:1000;display:flex;flex-direction:column;gap:8px}.toast{min-width:260px;max-width:380px;padding:12px 15px;border-radius:11px;background:#16324d;color:#fff;box-shadow:0 12px 28px rgba(0,0,0,.2);animation:slideIn .2s ease}.toast.error{background:#9d3030}.toast.success{background:#16766f}@keyframes slideIn{from{opacity:0;transform:translateX(20px)}to{opacity:1;transform:translateX(0)}}
.modal-mask{position:fixed;inset:0;background:rgba(8,20,31,.52);display:grid;place-items:center;padding:20px;z-index:100}.modal{width:min(620px,100%);max-height:92vh;overflow:auto;background:#fff;border-radius:18px;box-shadow:0 30px 80px rgba(0,0,0,.3)}.modal-head{display:flex;align-items:center;justify-content:space-between;padding:20px 22px;border-bottom:1px solid var(--line)}.modal-title{font-size:21px;font-weight:800}.modal-close{border:0;background:transparent;font-size:28px;color:#8090a0}.modal-body{padding:22px}.modal-foot{display:flex;justify-content:flex-end;gap:10px;padding:16px 22px;border-top:1px solid var(--line);background:#f8fafb}

/* Login */
.login-shell{min-height:100vh;display:grid;grid-template-columns:minmax(340px,1fr) minmax(380px,540px);background:linear-gradient(145deg,#0c2a45 0%,#123f65 50%,#e8eff4 50%,#f6f9fb 100%)}.login-hero{padding:8vh 8vw;color:#fff;display:flex;flex-direction:column;justify-content:center}.login-hero h1{font-size:42px;margin:18px 0 12px}.login-hero p{max-width:520px;line-height:1.8;opacity:.82}.login-points{display:grid;gap:14px;margin-top:30px}.login-point{display:flex;align-items:center;gap:12px}.point-dot{width:32px;height:32px;border-radius:10px;background:rgba(255,255,255,.14);display:grid;place-items:center}.login-panel{display:flex;align-items:center;justify-content:center;padding:28px}.login-card{width:100%;padding:34px}.login-card h2{margin:0 0 6px;font-size:26px}.login-card .sub{color:var(--muted);margin-bottom:26px}.login-error{background:#fff0f0;color:#9f3030;border:1px solid #f0c8c8;padding:10px 12px;border-radius:10px;margin-bottom:15px}

/* Visitor */
.visitor-page{height:100%;display:flex;flex-direction:column;background:radial-gradient(circle at 10% 0%,#f8fbfd 0,#eef4f7 45%,#e9f0f4 100%)}.visitor-shell{width:min(980px,100%);margin:0 auto;flex:1;min-height:0;padding:18px;display:flex}.chat-card{flex:1;min-height:0;display:flex;flex-direction:column;overflow:hidden}.chat-head{height:78px;padding:0 20px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);background:#fff}.chat-person{display:flex;align-items:center;gap:12px}.avatar{width:44px;height:44px;border-radius:13px;object-fit:cover;background:#edf3f6;border:1px solid rgba(20,44,65,.08)}.person-name{font-weight:800}.online{font-size:12px;color:#19806f;margin-top:3px}.online:before{content:"";display:inline-block;width:7px;height:7px;border-radius:50%;background:#2bbf88;margin-right:6px}.notice-bar{font-size:12px;color:#5f6f80;background:#f5f9fb;border-bottom:1px solid var(--line);padding:9px 20px}.messages{flex:1;overflow:auto;padding:22px;background:linear-gradient(180deg,#f6f9fb,#edf3f6)}.message{display:flex;gap:10px;margin-bottom:18px;align-items:flex-start}.message.mine{flex-direction:row-reverse}.message .avatar{width:38px;height:38px;border-radius:11px;flex:0 0 auto}.bubble-wrap{max-width:min(72%,620px)}.message.mine .bubble-wrap{text-align:right}.bubble-meta{font-size:11px;color:#8996a4;margin:0 4px 5px}.bubble{display:inline-block;text-align:left;padding:11px 14px;border-radius:5px 16px 16px 16px;background:#fff;box-shadow:0 5px 16px rgba(30,54,75,.08);line-height:1.6;word-break:break-word;white-space:pre-wrap}.message.mine .bubble{color:#fff;background:linear-gradient(135deg,var(--teal),#2d9a95);border-radius:16px 5px 16px 16px}.bubble img.chat-image{display:block;max-width:320px;max-height:320px;border-radius:10px}.file-card{display:flex;align-items:center;gap:10px;min-width:220px}.file-icon{width:38px;height:42px;border-radius:8px;background:#e9f2f6;color:var(--navy);display:grid;place-items:center;font-weight:800}.message.mine .file-icon{background:rgba(255,255,255,.18);color:#fff}.file-name{font-weight:700;max-width:260px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-tip{font-size:11px;opacity:.7}.msg-actions{margin-top:5px;opacity:0;transition:.15s}.message:hover .msg-actions{opacity:1}.msg-delete{border:0;background:transparent;color:#a64a4a;font-size:12px}.composer{background:#fff;border-top:1px solid var(--line);padding:14px 16px}.composer-row{display:flex;align-items:flex-end;gap:10px}.attach-btn{width:42px;height:42px;border-radius:11px;border:1px solid var(--line);background:#f7fafb;color:#53677a;display:grid;place-items:center;font-size:22px}.composer textarea{flex:1;min-height:42px;max-height:130px;resize:none;border:1px solid #cdd8e2;border-radius:12px;padding:10px 12px;outline:none}.composer textarea:focus{border-color:var(--teal);box-shadow:0 0 0 3px rgba(30,130,127,.1)}.send-btn{height:42px;min-width:82px}.upload-preview{font-size:12px;color:var(--muted);padding:0 52px 8px}.blocked-box{text-align:center;padding:60px 22px}.blocked-icon{width:76px;height:76px;border-radius:22px;background:#fff0f0;color:#b23939;display:grid;place-items:center;font-size:36px;margin:0 auto 20px}

/* Service */
.workspace{height:100vh;display:flex;flex-direction:column}.workspace-main{flex:1;min-height:0;display:grid;grid-template-columns:340px 1fr}.sidebar{min-width:0;background:#fff;border-right:1px solid var(--line);display:flex;flex-direction:column}.sidebar-head{padding:16px;border-bottom:1px solid var(--line)}.search-box{position:relative}.search-box input{padding-left:38px}.search-icon{position:absolute;left:13px;top:11px;color:#8190a0}.conversation-list{flex:1;overflow:auto}.conversation-item{display:flex;gap:11px;padding:14px 15px;border-bottom:1px solid #edf1f4;cursor:pointer;transition:.15s}.conversation-item:hover,.conversation-item.active{background:#eef7f7}.conversation-main{min-width:0;flex:1}.conversation-top{display:flex;justify-content:space-between;gap:8px}.conversation-name{font-weight:800;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.conversation-time{font-size:11px;color:#94a0ad}.conversation-preview{font-size:12px;color:#718092;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:6px}.unread-dot{min-width:20px;height:20px;padding:0 6px;border-radius:999px;background:#cf3f45;color:#fff;font-size:11px;display:grid;place-items:center}.chat-pane{min-width:0;display:flex;flex-direction:column;background:#edf3f6}.empty-state{flex:1;display:grid;place-items:center;color:#7c8998;text-align:center}.empty-state .empty-icon{width:88px;height:88px;border-radius:25px;background:#fff;box-shadow:0 10px 30px rgba(20,45,65,.1);display:grid;place-items:center;font-size:38px;margin:0 auto 18px}.service-chat{flex:1;min-height:0;display:flex;flex-direction:column}.service-chat .chat-head{height:70px}.visitor-detail{font-size:12px;color:#748395;margin-top:4px}.chat-tools{display:flex;gap:8px;flex-wrap:wrap}.tool-btn{border:1px solid var(--line);background:#fff;border-radius:9px;padding:8px 11px;color:#44576b}.tool-btn.danger{color:#a73636;border-color:#efcaca;background:#fff8f8}.profile-trigger{display:flex;align-items:center;gap:9px;border:0;background:transparent;color:#fff}.profile-trigger .avatar{width:36px;height:36px;border-color:rgba(255,255,255,.25)}

/* Admin */
.admin-page{min-height:100vh;background:#edf3f7}.admin-wrap{width:min(1280px,calc(100% - 32px));margin:22px auto 50px}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:18px}.stat-card{padding:20px}.stat-label{color:var(--muted);font-size:13px}.stat-value{font-size:30px;font-weight:850;margin-top:7px;color:var(--navy)}.admin-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:18px}.section-card{padding:20px;margin-bottom:18px}.section-title{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.section-title h3{margin:0;font-size:19px}.table-wrap{overflow:auto}.table{width:100%;border-collapse:collapse;min-width:760px}.table th,.table td{text-align:left;padding:11px 10px;border-bottom:1px solid var(--line);font-size:13px;vertical-align:top}.table th{color:#617185;background:#f7f9fb}.table-actions{display:flex;gap:6px;flex-wrap:wrap}.tg-status{display:flex;gap:6px;flex-wrap:wrap}.check-row{display:flex;align-items:center;gap:8px;margin:10px 0 14px;color:#31455b;font-weight:650}.check-row input{width:16px;height:16px}.check-row.danger{color:#a73535}.mini-btn{border:1px solid var(--line);background:#fff;border-radius:8px;padding:6px 9px;font-size:12px}.mini-btn.danger{color:#a73535;background:#fff7f7;border-color:#efcccc}

@media(max-width:900px){.login-shell{grid-template-columns:1fr;background:#edf3f7}.login-hero{display:none}.workspace-main{grid-template-columns:290px 1fr}.stats-grid{grid-template-columns:1fr 1fr}.admin-grid{grid-template-columns:1fr}}
@media(max-width:680px){.topbar{height:64px;padding:0 13px}.brand-title{font-size:16px}.brand-subtitle{display:none}.visitor-shell{padding:0}.chat-card{border-radius:0;border-left:0;border-right:0;box-shadow:none}.messages{padding:16px 12px}.bubble-wrap{max-width:82%}.composer{padding:10px}.workspace-main{display:block;position:relative}.sidebar{height:calc(100vh - 64px)}.chat-pane{position:fixed;inset:64px 0 0 0;z-index:20}.chat-pane.mobile-hidden{display:none}.service-chat .chat-head{padding:0 12px}.chat-tools .tool-btn{padding:7px 8px;font-size:12px}.stats-grid{grid-template-columns:1fr 1fr}.admin-wrap{width:calc(100% - 20px);margin-top:12px}.form-row{grid-template-columns:1fr}.top-actions .hide-mobile{display:none}.login-panel{padding:16px}.login-card{padding:24px}.modal-mask{padding:8px}.modal{max-height:96vh}.bubble img.chat-image{max-width:230px}}


.emoji-btn{font-size:20px;background:#fff8e9}.composer{position:relative}.emoji-panel{position:absolute;left:58px;bottom:72px;width:min(330px,calc(100% - 24px));max-height:190px;overflow:auto;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:0 16px 40px rgba(10,35,55,.18);padding:10px;display:grid;grid-template-columns:repeat(8,1fr);gap:6px;z-index:50}.emoji-item{border:0;background:#f6f9fb;border-radius:9px;min-height:34px;font-size:20px}.emoji-item:hover{background:#e8f7f5;transform:translateY(-1px)}.messages.drag-over{outline:2px dashed var(--teal);outline-offset:-8px;background:#e9f7f6}.upload-preview img{max-width:72px;max-height:72px;border-radius:8px;vertical-align:middle;margin-right:8px}

.conversation-location{font-size:11px;color:#7d8b9b;margin-top:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.visitor-detail{line-height:1.55}.visitor-detail a{color:var(--teal);font-weight:700;text-decoration:underline}




.album-btn{font-size:19px;background:#eef7ff}


.visitor-album-panel{border-bottom:1px solid var(--line);background:#fff;padding:10px 14px 12px}.visitor-album-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px;font-size:13px;font-weight:800;color:#30465c}.mini-link{border:0;background:transparent;color:var(--teal);font-size:12px;font-weight:700}.album-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(72px,1fr));gap:8px;max-height:172px;overflow:auto}.album-thumb{position:relative;display:block;border-radius:10px;overflow:hidden;background:#eef3f7;border:1px solid var(--line);aspect-ratio:1/1}.album-thumb img{width:100%;height:100%;object-fit:cover;display:block}.album-thumb span{position:absolute;left:0;right:0;bottom:0;background:linear-gradient(transparent,rgba(0,0,0,.55));color:#fff;font-size:10px;padding:14px 5px 4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.album-thumb:hover{transform:translateY(-1px);box-shadow:0 8px 18px rgba(20,45,65,.16)}
@media(max-width:680px){.album-grid{grid-template-columns:repeat(auto-fill,minmax(58px,1fr));max-height:132px}.visitor-album-panel{padding:8px}}

.album-status{grid-column:1/-1;display:flex;flex-wrap:wrap;gap:6px 10px;font-size:12px;color:#53677a;background:#f6fafb;border:1px solid var(--line);border-radius:10px;padding:8px 10px}.album-status span{white-space:nowrap}.album-error{width:100%;color:#a73535;font-weight:700}.album-empty{grid-column:1/-1;color:#7b8998;font-size:12px;background:#fbfcfd;border:1px dashed #cbd8e3;border-radius:10px;padding:12px;line-height:1.6}

.app-update-banner{position:fixed;left:16px;right:16px;bottom:16px;z-index:2000;background:#fff;border:1px solid var(--line);box-shadow:0 18px 45px rgba(15,35,55,.2);border-radius:14px;padding:12px;display:flex;align-items:center;justify-content:space-between;gap:12px}.app-update-banner span{font-size:12px;color:#6f7d8f}.app-update-actions{display:flex;gap:8px;flex-shrink:0}@media(max-width:680px){.app-update-banner{display:block}.app-update-actions{margin-top:10px}.app-update-actions .btn{padding:8px 12px}}