:root{--bg: #0f172a;--bg-soft: #16213c;--panel: #1b2545;--panel-2: #232f57;--line: #2c3a68;--text: #e6ecff;--muted: #93a0c4;--brand: #4f7cff;--brand-2: #3b62e0;--ok: #22c55e;--warn: #f59e0b;--danger: #ef4444;--radius: 12px}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,Helvetica Neue,Arial,sans-serif;font-size:14px;line-height:1.5}a{color:var(--brand);text-decoration:none}h1,h2,h3{margin:0 0 12px;font-weight:600}h1{font-size:22px}h2{font-size:18px}h3{font-size:15px}.page-center{min-height:100vh;display:flex;align-items:center;justify-content:center}.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:18px}.row{display:flex;gap:12px;align-items:center}.row.wrap{flex-wrap:wrap}.col{display:flex;flex-direction:column;gap:12px}.between{justify-content:space-between}.grow{flex:1}.mt8{margin-top:8px}.mt16{margin-top:16px}.mt24{margin-top:24px}.muted{color:var(--muted)}.small{font-size:12px}.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}label.field{display:block;margin-bottom:12px}label.field>span{display:block;margin-bottom:6px;color:var(--muted);font-size:12px}input[type=text],input[type=password],input[type=number],select,textarea{width:100%;padding:10px 12px;background:var(--bg-soft);border:1px solid var(--line);border-radius:8px;color:var(--text);font-size:14px;outline:none}input:focus,select:focus,textarea:focus{border-color:var(--brand)}input::placeholder{color:#5d6b96}.switch{display:flex;align-items:center;gap:8px;cursor:pointer;-webkit-user-select:none;user-select:none}.switch input{width:16px;height:16px;accent-color:var(--brand)}button{font:inherit;cursor:pointer;border:1px solid transparent;border-radius:8px;padding:9px 16px;background:var(--brand);color:#fff;transition:filter .15s}button:hover:not(:disabled){filter:brightness(1.1)}button:disabled{opacity:.5;cursor:not-allowed}button.ghost{background:transparent;border-color:var(--line);color:var(--text)}button.soft{background:var(--panel-2);color:var(--text)}button.danger{background:var(--danger)}button.ok{background:var(--ok)}button.sm{padding:5px 10px;font-size:12px;border-radius:6px}table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--line)}th{color:var(--muted);font-weight:500;font-size:12px}tbody tr:hover{background:#ffffff08}.tag{display:inline-block;padding:2px 8px;border-radius:999px;font-size:12px;background:var(--panel-2);color:var(--muted)}.tag.ok{background:#22c55e26;color:var(--ok)}.tag.warn{background:#f59e0b26;color:var(--warn)}.tag.danger{background:#ef444426;color:var(--danger)}.avatar{display:inline-flex;align-items:center;justify-content:center;border-radius:50%;flex:none;line-height:1}.alert{padding:10px 12px;border-radius:8px;background:#ef44441f;border:1px solid rgba(239,68,68,.35);color:#fca5a5;font-size:13px}.alert.ok{background:#22c55e1f;border-color:#22c55e59;color:#86efac}.login-box{width:340px}.login-box h1{text-align:center}.login-box .brand{text-align:center;font-size:34px;margin-bottom:6px}.layout{min-height:100vh;display:flex;flex-direction:column}.topbar{height:54px;display:flex;align-items:center;gap:18px;padding:0 20px;border-bottom:1px solid var(--line);background:var(--bg-soft)}.topbar .logo{font-weight:600;font-size:16px}.topbar nav{display:flex;gap:4px;flex:1}.topbar nav a{padding:6px 12px;border-radius:8px;color:var(--muted)}.topbar nav a.active{background:var(--panel-2);color:var(--text)}.main{padding:20px;max-width:1180px;width:100%;margin:0 auto}.grid{display:grid;gap:14px;grid-template-columns:repeat(auto-fill,minmax(320px,1fr))}.code{font-family:ui-monospace,monospace;letter-spacing:1px;font-size:16px}.avatar-picker{display:grid;grid-template-columns:repeat(8,1fr);gap:6px}.avatar-tabs{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:10px}.avatar-tabs button{padding:6px 12px;font-size:13px;border-radius:999px;background:var(--panel-2);color:var(--muted)}.avatar-tabs button.on{background:var(--brand);color:#fff}.join-preview{margin-top:22px;padding-top:18px;border-top:1px solid var(--line)}.custom-panel{display:flex;flex-direction:column}.avatar-upload{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;padding:20px 16px;min-height:168px;border:1.5px dashed var(--line);border-radius:12px;background:#ffffff05;cursor:pointer;transition:border-color .15s,background .15s;text-align:center}.avatar-upload:hover{border-color:var(--brand);background:#4f7cff12}.avatar-upload.over{border-color:var(--brand);background:#4f7cff24}.avatar-upload.busy{cursor:progress;opacity:.8}.avatar-upload .upload-icon{font-size:32px;line-height:1}.avatar-upload .upload-title{font-size:15px;font-weight:500}.avatar.is-img{overflow:hidden;border:1px solid var(--line)}.avatar.is-img img{width:100%;height:100%;object-fit:cover;display:block}.avatar-picker button{aspect-ratio:1;border-radius:50%;padding:0;font-size:18px;background:var(--panel-2);border:2px solid transparent}.avatar-picker button.on{border-color:var(--brand)}.lk-room-container{flex:1;min-width:0;min-height:0;display:flex;flex-direction:column}.room{flex:1;min-height:0;display:flex;flex-direction:column;overflow:hidden}.room-full,.admin-room{height:100vh;height:100dvh;display:flex;flex-direction:column;overflow:hidden}.admin-room>.topbar{flex:none}.admin-room-main{flex:1;min-width:0;min-height:0;display:flex;flex-direction:column}.room-body{flex:1;display:flex;min-height:0}.room-main{flex:1;display:flex;flex-direction:column;min-width:0}.side{width:320px;border-left:1px solid var(--line);background:var(--bg-soft);display:flex;flex-direction:column;min-height:0}.side-tabs{display:flex;border-bottom:1px solid var(--line)}.side-tabs button{flex:1;border-radius:0;background:transparent;color:var(--muted);border-bottom:2px solid transparent}.side-tabs button.on{color:var(--text);border-bottom-color:var(--brand)}.side-body{flex:1;overflow-y:auto;padding:12px}.stage{flex:1;display:flex;align-items:center;justify-content:center;padding:16px;min-height:0}.slide-wrap{max-width:100%;max-height:100%;display:flex;flex-direction:column;gap:10px;align-items:center}.slide-wrap img{max-width:100%;max-height:70vh;border-radius:8px;background:#000}.slide-thumb{cursor:zoom-in;-webkit-touch-callout:none;-webkit-user-select:none;user-select:none}.start-audio-wrap{position:fixed;left:50%;bottom:calc(24px + env(safe-area-inset-bottom));transform:translate(-50%);z-index:180}.start-audio-wrap button{padding:12px 26px;border-radius:999px;font-size:14px;box-shadow:0 8px 24px #00000073;white-space:nowrap}.lightbox{position:fixed;top:0;right:0;bottom:0;left:0;z-index:200;background:#000000f0;display:flex;flex-direction:column}.lb-bar{display:flex;align-items:center;gap:8px;padding:8px 10px;background:#ffffff0f}.lb-canvas{flex:1;min-height:0;overflow:hidden;display:flex;align-items:center;justify-content:center;touch-action:none;cursor:grab}.lb-canvas img{max-width:100%;max-height:100%;transform-origin:center center;will-change:transform;-webkit-touch-callout:none;-webkit-user-select:none;user-select:none;-webkit-user-drag:none}.slide-nav{display:flex;gap:8px;align-items:center}.audio-stage{display:flex;flex-direction:column;align-items:center;gap:14px}.mic-meter{height:8px;width:100%;border-radius:999px;background:var(--panel-2);overflow:hidden}.mic-meter>i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--ok),#86efac);transition:width .08s linear}.speaking-ring{position:relative;width:120px;height:120px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:var(--panel-2);font-size:46px;box-shadow:0 0 #4f7cff99}.speaking-ring.on{box-shadow:0 0 0 8px #4f7cff40}.fab{position:fixed;right:18px;bottom:calc(18px + env(safe-area-inset-bottom));z-index:150;display:flex;flex-direction:column;align-items:flex-end;gap:10px}.fab-btn{width:56px;height:56px;padding:0;border-radius:50%;font-size:22px;line-height:1;display:flex;align-items:center;justify-content:center;box-shadow:0 6px 18px #0006;touch-action:none;cursor:grab;user-select:none;-webkit-user-select:none;-webkit-touch-callout:none}.fab-btn:active{cursor:grabbing}.fab.down{flex-direction:column-reverse}.fab-menu{display:flex;flex-direction:column;gap:8px;min-width:168px;padding:10px;border-radius:14px;background:var(--panel);border:1px solid var(--line);box-shadow:0 12px 32px #00000080}.fab-menu button{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;font-size:14px;white-space:nowrap}.fab-menu button i{font-style:normal;font-size:17px;width:20px;text-align:center}.fab-sep{height:1px;background:var(--line);margin:4px 0}.fab-menu .leave-btn{opacity:.9}.fab-menu .leave-btn.armed{background:var(--danger);color:#fff;opacity:1;animation:nudge .4s ease}@keyframes nudge{0%,to{transform:translate(0)}25%{transform:translate(-3px)}75%{transform:translate(3px)}}.people-list{display:flex;flex-direction:column;gap:6px}.person{display:flex;align-items:center;gap:10px;padding:7px 8px;border-radius:8px}.person:hover{background:#ffffff0a}.person .name{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.person-actions{display:flex;gap:4px;flex:none}.person-actions button{padding:4px 8px;font-size:12px}.chat-list{display:flex;flex-direction:column;gap:10px}.chat-item{display:flex;gap:8px}.chat-item .body{flex:1;min-width:0}.chat-item .body .meta{font-size:12px;color:var(--muted);margin-bottom:2px}.chat-item .body .text{word-break:break-word}.chat-input{display:flex;gap:8px;padding:10px;border-top:1px solid var(--line);align-items:center}.chat-input input{flex:1;height:44px;min-height:0;padding:0 12px;line-height:44px}.chat-input>button{flex:none;height:44px;padding:0 18px}.emoji-wrap{position:relative;flex:none;display:flex}.emoji-wrap>button{width:44px;height:44px;padding:0;min-width:0;font-size:19px;border-radius:8px;display:flex;align-items:center;justify-content:center}.emoji-panel{position:absolute;left:-2px;bottom:calc(100% + 8px);z-index:160;width:300px;padding:5px;background:#1a2540;border:1px solid var(--line);border-radius:10px;box-shadow:0 12px 30px #0000008c}.emoji-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:1px;max-height:88px;overflow-y:auto;-webkit-overflow-scrolling:touch}.emoji-grid button{width:100%;aspect-ratio:1 / 1;padding:0;font-size:15px;line-height:1;background:transparent;border:none;border-radius:3px;display:flex;align-items:center;justify-content:center}.emoji-grid button:hover,.emoji-grid button:active{background:#ffffff17}.waiting-box{width:460px;text-align:center}.waiting-box .pulse{font-size:46px;margin-bottom:10px}@media (max-width: 768px){body{font-size:15px;-webkit-text-size-adjust:100%}.page-center{align-items:flex-start;padding:16px 14px calc(16px + env(safe-area-inset-bottom))}.login-box,.waiting-box{width:100%;max-width:460px}.avatar-picker{grid-template-columns:repeat(6,1fr);gap:6px}.avatar-tabs button{padding:8px 14px;font-size:14px}.avatar-picker button{font-size:21px;border-width:1.5px}.room-body{flex-direction:column}.room-main{flex:none;display:flex;flex-direction:column;min-height:0}.stage{flex:none;padding:12px;min-height:120px;max-height:30vh;overflow:hidden;display:flex;align-items:center;justify-content:center}.audio-stage{gap:8px}.speaking-ring{width:62px;height:62px;font-size:24px}.speaking-ring .avatar{width:46px!important;height:46px!important;font-size:24px!important}.mic-meter{width:190px;height:7px}.slide-wrap{width:100%;gap:6px;align-items:center}.slide-wrap img{max-height:22vh}.slide-nav button{padding:8px 14px}.side{width:100%;flex:1;min-height:0;border-left:none;border-top:1px solid var(--line)}.side-tabs button{padding:13px 6px;font-size:14px}.side-body{padding:12px;-webkit-overflow-scrolling:touch}.person{padding:12px 10px;gap:12px;flex-wrap:wrap}.person-actions{gap:6px;margin-left:auto}.person-actions button{padding:7px 12px;font-size:13px}.person .name{font-size:15px}.chat-item{gap:12px}.chat-item .body .meta{font-size:13px;margin-bottom:3px}.chat-item .body .text{font-size:15px;line-height:1.65;word-break:break-word}.person .avatar,.chat-item .avatar{width:40px!important;height:40px!important;font-size:21px!important}.tag{font-size:12px;padding:3px 9px}.fab{right:12px;bottom:calc(78px + env(safe-area-inset-bottom))}.fab-btn{width:52px;height:52px;font-size:20px}.fab-menu{min-width:150px}.chat-input{padding:10px 10px calc(10px + env(safe-area-inset-bottom));gap:8px;align-items:center}.emoji-panel{position:fixed;left:8px;right:8px;bottom:calc(74px + env(safe-area-inset-bottom));width:auto;padding:5px;border-radius:12px}.emoji-grid{grid-template-columns:repeat(12,1fr);max-height:22vh}.emoji-grid button{font-size:16px}.emoji-wrap>button{width:48px;height:48px;font-size:21px;border-radius:8px}.chat-input input{font-size:16px;height:48px;padding:0 12px;line-height:48px}.chat-input button{height:48px;padding:0 16px;flex:none}input[type=text],input[type=password],select{font-size:16px}}@media (max-width: 380px){.fab-btn{width:48px;height:48px}.topbar nav a{padding:6px 8px}.speaking-ring{width:54px;height:54px;font-size:21px}}@media (max-height: 460px) and (orientation: landscape){.speaking-ring{width:60px;height:60px;font-size:22px}.side{flex:1}.fab{bottom:calc(60px + env(safe-area-inset-bottom))}}