/* ==========================================================================
   视频会议室 · 设计系统
   深色为默认，浅色通过 body.light 覆盖
   ========================================================================== */
:root{
  --bg:#0b0e14; --bg2:#12161f; --bg3:#1a1f2b; --bg4:#232936;
  --panel:rgba(18,22,31,.94); --border:#2a3140; --border2:#39415380;
  --text:#e9edf5; --dim:#94a0b8; --dim2:#6b7793;
  --primary:#3b82f6; --primary2:#2563eb; --primary-soft:rgba(59,130,246,.14);
  --danger:#ef4444; --danger2:#dc2626; --ok:#22c55e; --warn:#f59e0b;
  --r:14px; --r-sm:10px; --r-xs:7px;
  --shadow:0 12px 40px rgba(0,0,0,.5);
  --shadow-sm:0 4px 14px rgba(0,0,0,.3);
  --safe-b:env(safe-area-inset-bottom,0px);
  --safe-t:env(safe-area-inset-top,0px);
}
body.light{
  --bg:#eef1f7; --bg2:#fff; --bg3:#e6ebf4; --bg4:#dbe2ee;
  --panel:rgba(255,255,255,.96); --border:#ccd5e4; --border2:#b9c4d680;
  --text:#141922; --dim:#5a6680; --dim2:#7c879e;
  --shadow:0 12px 34px rgba(20,32,64,.16); --shadow-sm:0 4px 12px rgba(20,32,64,.1);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0;height:100%;background:var(--bg);color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:14px;-webkit-font-smoothing:antialiased;overscroll-behavior:none}
.hidden{display:none!important}
.screen{min-height:100dvh}
.ico{width:1em;height:1em;fill:currentColor;display:block}
svg.ico[stroke]{fill:none}

/* ============================ 提示条 ============================ */
.banner{position:fixed;top:0;left:0;right:0;z-index:900;display:flex;align-items:center;gap:12px;
  padding:11px 16px;background:linear-gradient(90deg,#7f1d1d,#b91c1c);color:#fff;font-size:13.5px;
  line-height:1.5;box-shadow:0 6px 20px rgba(0,0,0,.45)}
.banner.warn{background:linear-gradient(90deg,#78350f,#b45309)}
.banner.info{background:linear-gradient(90deg,#1e3a8a,#2563eb)}
.banner.ok{background:linear-gradient(90deg,#14532d,#16a34a)}
.banner button{margin-left:auto;background:transparent;border:0;color:#fff;font-size:22px;cursor:pointer;line-height:1}

/* ============================ 加入界面 ============================ */
#joinScreen{display:flex;align-items:center;justify-content:center;padding:26px 16px calc(26px + var(--safe-b));
  background:radial-gradient(1100px 620px at 50% -10%,#1b2440 0%,var(--bg) 62%)}
/* 登录页：横竖屏都居中（margin:auto 保证内容超高时顶部不被裁切） */
#loginScreen{display:flex;padding:26px 16px calc(26px + var(--safe-b));
  background:radial-gradient(1100px 620px at 50% -10%,#1b2440 0%,var(--bg) 62%)}
#loginScreen .login-card{margin:auto}
.join-card{width:100%;max-width:860px;background:var(--panel);border:1px solid var(--border);
  border-radius:20px;box-shadow:var(--shadow);padding:26px;backdrop-filter:blur(14px)}
.join-card.center{max-width:470px;text-align:center}
.join-head{text-align:center;margin-bottom:18px;position:relative}
.logo{font-size:30px;color:var(--primary);filter:drop-shadow(0 0 14px rgba(59,130,246,.6))}
.join-head h1{margin:6px 0 4px;font-size:23px;letter-spacing:.4px}
.join-head .sub{margin:0;color:var(--dim);font-size:13.5px}
.head-tools{position:absolute;top:0;right:0;display:flex;flex-direction:column;gap:6px}
.mini-btn{background:var(--bg3);color:var(--dim);border:1px solid var(--border);border-radius:999px;
  padding:5px 11px;font-size:11.5px;cursor:pointer}
.mini-btn:hover{color:var(--text);border-color:var(--primary)}

/* 预览 */
.preview-wrap{position:relative;width:100%;aspect-ratio:16/9;background:#05070c;border-radius:var(--r);
  overflow:hidden;border:1px solid var(--border)}
#previewVideo{width:100%;height:100%;object-fit:contain;display:block}
/* 手机竖屏：预览框按竖屏比例，避免把前置竖屏画面裁成横向一条 */
@media (max-width:640px) and (orientation:portrait){
  .preview-wrap{aspect-ratio:3/4}
}
#previewVideo.mirror{transform:scaleX(-1)}
.preview-ph{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  color:var(--dim);font-size:13.5px;background:#05070c;text-align:center;padding:18px;line-height:1.7}
.preview-bar{position:absolute;bottom:12px;left:50%;transform:translateX(-50%);display:flex;gap:10px}
.pv-btn{width:44px;height:44px;border-radius:50%;cursor:pointer;border:1px solid rgba(255,255,255,.18);
  background:rgba(0,0,0,.58);color:#fff;font-size:19px;display:flex;align-items:center;justify-content:center;
  backdrop-filter:blur(6px);transition:background .15s}
.pv-btn:hover{background:rgba(0,0,0,.78)}
.pv-btn.off{background:var(--danger2);border-color:var(--danger)}
.level-meter{position:absolute;left:12px;bottom:12px;width:92px;height:5px;
  background:rgba(255,255,255,.18);border-radius:3px;overflow:hidden}
.level-meter i{display:block;height:100%;width:0%;background:var(--ok);transition:width .08s linear}
.preview-stats{position:absolute;right:12px;top:12px;background:rgba(0,0,0,.6);color:#fff;font-size:11.5px;
  padding:4px 10px;border-radius:999px;font-variant-numeric:tabular-nums}

/* 表单 */
.fields{margin-top:18px}
.row{display:flex;gap:12px;flex-wrap:wrap}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:13px;flex:1;min-width:150px}
.field>span{font-size:12.5px;color:var(--dim)}
input[type=text],input[type=password],input[type=number],select,textarea{
  width:100%;padding:12px 13px;background:var(--bg3);color:var(--text);border:1px solid var(--border);
  border-radius:var(--r-sm);font-size:15px;outline:none;transition:border-color .15s;font-family:inherit}
input:focus,select:focus,textarea:focus{border-color:var(--primary)}
.btn{border:0;border-radius:var(--r-sm);cursor:pointer;padding:11px 20px;font-size:14.5px;font-weight:600;
  display:inline-flex;align-items:center;justify-content:center;gap:7px;font-family:inherit;
  transition:transform .1s,filter .15s}
.btn:active{transform:translateY(1px)}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff}
.btn-primary:hover{filter:brightness(1.09)}
.btn-ghost{background:var(--bg3);color:var(--text);border:1px solid var(--border)}
.btn-ghost:hover{border-color:var(--primary)}
.btn-danger{background:linear-gradient(135deg,var(--danger),var(--danger2));color:#fff}
.btn-lg{flex:1;min-width:170px;padding:14px 22px;font-size:16px}
.btn-sm{padding:8px 14px;font-size:13px}
.btn:disabled{opacity:.5;cursor:not-allowed}
.hint{font-size:13px;color:var(--warn);min-height:18px;margin-bottom:8px}
.hint.err{color:var(--danger)}
.hint.ok{color:var(--ok)}
.join-actions{display:flex;gap:11px;flex-wrap:wrap;margin-top:4px}
.diag{font-size:12.5px;color:var(--dim);margin-top:10px;white-space:pre-wrap;word-break:break-word;
  line-height:1.6;max-height:210px;overflow:auto;background:var(--bg3);padding:12px;border-radius:var(--r-sm)}
.diag .good{color:#86efac}.diag .bad{color:#fca5a5}.diag .warn{color:#fcd34d}
.devices{margin-top:16px;border-top:1px solid var(--border);padding-top:12px}
.devices summary{cursor:pointer;font-size:13.5px;color:var(--dim)}
/* 登录页 / 好友列表 */
.login-card{max-width:430px}
.friends-box summary{user-select:none}
.friends-box .fr-search{display:flex;gap:8px;margin-top:10px}
.friends-box .fr-search input{flex:1;min-width:0}
.friend-list{margin-top:8px;max-height:220px;overflow:auto;display:flex;flex-direction:column;gap:6px}
.friend-list .fr-empty{font-size:13px;color:var(--dim);padding:8px 2px}
.fr-row{display:flex;align-items:center;gap:8px;background:var(--bg3);border:1px solid var(--border);
  border-radius:var(--r-sm);padding:7px 10px;font-size:13.5px}
.fr-dot{width:8px;height:8px;border-radius:50%;background:#64748b;flex:none}
.fr-dot.on{background:#22c55e;box-shadow:0 0 6px #22c55e88}
.fr-name{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.fr-st{font-size:12px;color:var(--dim);flex:none}
.fr-invite{flex:none}
.dev-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:12px;margin-top:12px}
.spinner{width:38px;height:38px;margin:0 auto 16px;border:3px solid var(--border);border-top-color:var(--primary);
  border-radius:50%;animation:spin .9s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* ============================ 会议界面 ============================ */
.room-shell{display:flex;flex-direction:column;height:100dvh}
.stage{position:relative;flex:1;min-height:0;overflow:hidden;background:#05070c}
.grid{display:grid;gap:8px;padding:8px;width:100%;height:100%;
  grid-template-columns:repeat(auto-fit,minmax(280px,1fr));grid-auto-rows:1fr;align-content:center}
.grid.count-1{grid-template-columns:1fr;max-width:1100px;margin:0 auto}
.grid.count-2{grid-template-columns:repeat(2,1fr)}
/* 2 人方向混合排版：我竖屏+对方横屏 → 上下两行（对方全尺寸在上，我在下）；
   我横+对方竖 → 保持左右两列（我左对方右，DOM 顺序天然满足）。
   所有画面 object-fit:contain 全尺寸可见、不裁剪，黑边自适应。 */
.grid.count-2.mix-stack:not(.mode-speaker){grid-template-columns:1fr;grid-template-rows:1fr 1fr}
.grid .tile.order-first{order:-1}
.grid.mode-speaker{grid-template-columns:1fr}
.grid.mode-speaker .tile:not(.speaker){position:absolute;right:10px;top:58px;width:152px;height:104px;
  margin-top:calc(var(--i,0) * 112px);z-index:6}
.tile{position:relative;border-radius:var(--r);overflow:hidden;background:var(--bg3);border:1px solid var(--border);
  min-height:120px;transition:border-color .2s,box-shadow .2s}
.tile video,.tile .video-slot,.tile .video-slot video{width:100%;height:100%;object-fit:contain;display:block;background:#05070c}
/* ★ 视频渲染容器：绝对定位铺满格子。
   TRTC 会往这个容器里注入它自己的 <video>；LiveKit 也在此挂流。
   绝不能再把 <video> 本身当容器传给 TRTC——那样 SDK 的 video 会被塞进
   一个 replaced element 里，尺寸恒为 0×0，画面无法显示。 */
.video-slot{position:absolute;inset:0;overflow:hidden}
.video-slot video{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;background:#05070c}
.tile.mirror video{transform:scaleX(-1)}
.tile.speaking{border-color:var(--ok);box-shadow:0 0 0 2px rgba(34,197,94,.42)}
.tile.local{border-color:var(--primary)}
.tile-name{position:absolute;left:9px;bottom:9px;background:rgba(0,0,0,.62);color:#fff;padding:4px 10px;
  border-radius:var(--r-xs);font-size:12px;display:flex;align-items:center;gap:5px;backdrop-filter:blur(4px);max-width:70%;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tile-badges{position:absolute;right:9px;top:9px;display:flex;gap:5px}
.tile-badge{background:rgba(0,0,0,.62);color:#fff;border-radius:var(--r-xs);font-size:11px;padding:3px 7px}
.tile-badge.muted{background:var(--danger2)}
/* ★★ 关键修复：头像占位层默认必须隐藏，否则它会盖住视频（用户只看到首字母）。
   只有在明确需要「无视频」时才用 .tile-video-off 把它显出来。 */
.tile-avatar{position:absolute;inset:0;display:none;align-items:center;justify-content:center;font-size:42px;
  font-weight:700;color:#fff;background:linear-gradient(135deg,#26304a,#171d2e);z-index:1}
.tile-video-off video{display:none}
.tile-video-off .video-slot{display:none}
.tile-video-off .tile-avatar{display:flex}
.tile-vol{position:absolute;left:0;right:0;bottom:0;height:3px;background:transparent}
.tile-vol i{display:block;height:100%;width:0;background:var(--ok);transition:width .1s}

/* 焦点视图 */
.share-focus,.content-viewer,.whiteboard{position:absolute;inset:0;z-index:11;background:#05070c;
  display:flex;flex-direction:column}
.share-focus{align-items:center;justify-content:center}
.share-focus video{width:100%;height:100%;object-fit:contain}
.share-slot{position:absolute;inset:0;z-index:1}
.share-slot video{position:absolute;inset:0;width:100%!important;height:100%!important;object-fit:contain}
#shareVideo{position:relative;z-index:2}
.focus-label{position:absolute;top:60px;left:50%;transform:translateX(-50%);background:rgba(0,0,0,.68);
  padding:6px 15px;border-radius:999px;font-size:12.5px;color:#fff}

/* 内容查看器 */
.cv-bar{display:flex;align-items:center;gap:10px;padding:10px 12px;background:var(--panel);
  border-bottom:1px solid var(--border);backdrop-filter:blur(12px)}
.cv-title{flex:1;font-size:13.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cv-tools{display:flex;gap:6px}
.cv-body{flex:1;min-height:0;overflow:auto;display:flex;align-items:center;justify-content:center;position:relative}
.cv-body img{max-width:100%;max-height:100%;object-fit:contain;transition:transform .18s}
.cv-body video{max-width:100%;max-height:100%;background:#000}
.cv-body iframe{width:100%;height:100%;border:0;background:#000}
.cv-web{width:100%;height:100%;display:flex;flex-direction:column}
.cv-web-bar{display:flex;align-items:center;gap:12px;padding:8px 12px;border-bottom:1px solid var(--border);
  font-size:12.5px;color:var(--dim);flex-wrap:wrap}
.cv-note{padding:9px 12px;font-size:11.5px;line-height:1.7;color:var(--dim);background:var(--bg2);
  border-bottom:1px solid var(--border)}
.cv-scroll{position:relative;flex:1;min-height:0;overflow-y:auto;background:var(--bg3)}
.cv-scroll-inner{min-height:2200px;padding:34px 22px;position:relative}
.cv-ph{color:var(--dim);font-size:13px;line-height:1.9;max-width:560px;margin:40px auto 0}
.cv-url{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12px;color:var(--primary);word-break:break-all}
.cv-cursor-layer{position:absolute;inset:0;pointer-events:none}
.cv-frame-wrap{position:relative;flex:1;min-height:0}
.cv-frame-wrap iframe{position:absolute;inset:0;width:100%;height:100%;border:0;background:#fff}
.cv-loading{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  color:var(--dim);font-size:13px;background:var(--bg3);z-index:2;pointer-events:none}
.sv-sync{display:flex;align-items:center;gap:5px;cursor:pointer;user-select:none}
.cv-annot{position:absolute;border:2px solid var(--warn);border-radius:6px;pointer-events:none}

/* 顶部条 */
.topbar{position:absolute;top:0;left:0;right:0;z-index:8;display:flex;align-items:center;gap:10px;
  padding:calc(10px + var(--safe-t)) 12px 10px;
  background:linear-gradient(180deg,rgba(0,0,0,.62),transparent);pointer-events:none}
.topbar>*{pointer-events:auto}
.tb-left{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.tb-right{margin-left:auto;display:flex;gap:7px}
.room-chip,.stat-chip{background:rgba(0,0,0,.58);color:#fff;font-size:12px;padding:5px 12px;
  border-radius:999px;backdrop-filter:blur(5px)}
.stat-chip.good{background:rgba(22,163,74,.88)}
.stat-chip.bad{background:rgba(220,38,38,.88)}
.stat-chip.rec{background:rgba(220,38,38,.92);animation:pulse 1.4s infinite}
@keyframes pulse{50%{opacity:.45}}
.tb-btn{width:38px;height:38px;border-radius:var(--r-sm);cursor:pointer;background:rgba(0,0,0,.58);color:#fff;
  border:0;font-size:15px;backdrop-filter:blur(5px);display:flex;align-items:center;justify-content:center}
.tb-btn:hover{background:rgba(0,0,0,.78)}

/* 面板 */
.panel{position:absolute;right:12px;top:60px;z-index:9;background:var(--panel);border:1px solid var(--border);
  border-radius:var(--r);padding:14px;min-width:236px;box-shadow:var(--shadow);backdrop-filter:blur(12px)}
.panel h3{margin:0 0 10px;font-size:14px}
.stat-row{display:flex;justify-content:space-between;font-size:13px;padding:5px 0}
.stat-row span{color:var(--dim)}
.stat-row b{font-variant-numeric:tabular-nums}

/* 抽屉 */
.drawer{position:absolute;right:0;top:0;bottom:0;z-index:10;width:min(380px,100%);display:flex;
  flex-direction:column;background:var(--panel);border-left:1px solid var(--border);backdrop-filter:blur(14px)}
.drawer-tabs{display:flex;border-bottom:1px solid var(--border);overflow-x:auto}
.dtab{flex:1;min-width:62px;padding:13px 6px;background:transparent;border:0;cursor:pointer;color:var(--dim);
  font-size:13.5px;border-bottom:2px solid transparent;font-family:inherit;white-space:nowrap}
.dtab.active{color:var(--text);border-bottom-color:var(--primary)}
.drawer-close{background:transparent;border:0;color:var(--dim);font-size:22px;cursor:pointer;padding:0 12px}
.tab-pane{display:none;flex:1;min-height:0;flex-direction:column;padding:12px;overflow:hidden}
.tab-pane.active{display:flex}

/* 聊天 */
.chat-log{flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:10px;padding-right:4px;scroll-behavior:smooth}
.msg{max-width:88%;display:flex;flex-direction:column;gap:3px;position:relative}
.msg .who{font-size:11px;color:var(--dim);margin:0 2px;display:flex;align-items:center;gap:6px}
.msg .who .ts{opacity:.75;font-variant-numeric:tabular-nums}
.msg .bubble{background:var(--bg3);border-radius:14px 14px 14px 4px;padding:8px 12px;font-size:13.5px;
  line-height:1.55;word-break:break-word;white-space:pre-wrap;box-shadow:0 1px 0 rgba(0,0,0,.12)}
.msg.mine{align-self:flex-end;align-items:flex-end}
.msg.mine .who{flex-direction:row-reverse}
.msg.mine .bubble{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;
  border-radius:14px 14px 4px 14px}
.msg.sys{align-self:center;max-width:100%;align-items:center}
.msg.sys .bubble{background:transparent;color:var(--dim);font-size:12px;text-align:center;
  box-shadow:none;padding:2px 8px;white-space:normal}
.msg .chat-quote{display:block;margin:0 0 6px;padding:5px 8px;border-left:3px solid rgba(56,189,248,.55);
  background:rgba(0,0,0,.12);border-radius:6px;font-size:12px;opacity:.92;white-space:nowrap;
  overflow:hidden;text-overflow:ellipsis;max-width:100%}
.msg.mine .chat-quote{border-left-color:rgba(255,255,255,.55);background:rgba(255,255,255,.12)}
.msg .chat-mention{color:#38bdf8;font-weight:600}
.msg.mine .chat-mention{color:#fff;text-decoration:underline;text-underline-offset:2px}
.msg .msg-meta{display:flex;align-items:center;gap:6px;margin-top:2px;min-height:16px}
.msg .msg-status{font-size:10px;color:var(--dim);opacity:.85}
.msg.mine .msg-status{color:rgba(255,255,255,.75)}
.msg .msg-status.failed{color:var(--danger);cursor:pointer}
.msg .msg-reply-btn{opacity:0;border:0;background:transparent;color:var(--dim);font-size:11px;
  cursor:pointer;padding:0 2px}
.msg:hover .msg-reply-btn,.msg:focus-within .msg-reply-btn{opacity:1}
.msg.mine .msg-reply-btn{color:rgba(255,255,255,.8)}
/* 聊天图片「上白板」：移动端无 hover，需常显 */
.msg .msg-reply-btn.wb-put{opacity:.85;color:var(--primary);font-weight:600;margin-right:2px}
.msg.mention-hit .bubble{outline:1px solid rgba(56,189,248,.55)}
.emoji-bar{display:flex;gap:3px;flex-wrap:wrap;padding:7px 0;max-height:150px;overflow-y:auto}
.emoji-bar.hidden{display:none}
.emoji-bar button{background:var(--bg3);border:1px solid var(--border);border-radius:var(--r-xs);
  cursor:pointer;font-size:15px;padding:3px 7px;line-height:1.2}
.emoji-bar button:hover{border-color:var(--primary)}
.chat-form{display:flex;gap:7px;align-items:flex-end}
.chat-form textarea{flex:1;resize:none;min-height:36px;max-height:110px;padding:8px 10px;
  border-radius:var(--r-sm);border:1px solid var(--border);background:var(--bg3);color:var(--text);
  font:inherit;line-height:1.4;outline:none}
.chat-form textarea:focus{border-color:var(--primary)}
.chat-form input{flex:1}
.chat-img{max-width:100%;border-radius:var(--r-sm);margin-top:4px;cursor:pointer}
.chat-file{display:flex;align-items:center;gap:8px;background:var(--bg4);border-radius:var(--r-sm);
  padding:9px 11px;margin-top:4px;font-size:12.5px}
.chat-file a{color:var(--primary);text-decoration:none;font-weight:600}
.chat-hint{font-size:11px;color:var(--dim);padding:4px 2px 0;opacity:.85}
.chat-conn{display:inline-block;width:8px;height:8px;border-radius:50%;margin-left:8px;
  background:#f59e0b;box-shadow:0 0 0 3px rgba(245,158,11,.18);vertical-align:middle}
.chat-conn.ok{background:#22c55e;box-shadow:0 0 0 3px rgba(34,197,94,.18)}
.chat-conn.bad{background:#ef4444;box-shadow:0 0 0 3px rgba(239,68,68,.18)}
.fw-title-row{display:inline-flex;align-items:center}
.fw-actions{display:inline-flex;align-items:center;gap:2px}
.fw-tool{background:transparent;border:0;color:var(--dim);cursor:pointer;padding:2px 5px;
  line-height:1;border-radius:6px;font-size:16px}
.fw-tool:hover{color:var(--text);background:rgba(255,255,255,.06)}
.fw-tool .ico{width:15px;height:15px;display:block}
.float-win-chat{width:min(390px,calc(100% - 24px));max-height:min(70%,580px)}
.reply-bar{display:flex;align-items:center;gap:8px;padding:7px 8px;margin:6px 0 4px;
  background:rgba(56,189,248,.08);border:1px solid rgba(56,189,248,.22);border-radius:10px}
.reply-bar.hidden{display:none}
.reply-bar-body{flex:1;min-width:0}
.reply-bar-label{display:block;font-size:11px;color:#38bdf8;font-weight:600}
.reply-bar-text{display:block;font-size:12px;color:var(--dim);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.mention-menu{position:absolute;left:11px;right:11px;bottom:78px;z-index:5;max-height:160px;
  overflow-y:auto;background:var(--panel);border:1px solid var(--border);border-radius:10px;
  box-shadow:var(--shadow)}
.mention-menu.hidden{display:none}
.mention-menu button{display:block;width:100%;text-align:left;background:transparent;border:0;
  color:var(--text);padding:8px 12px;cursor:pointer;font:inherit;font-size:13px}
.mention-menu button:hover,.mention-menu button.active{background:rgba(56,189,248,.12)}
.chat-new-btn{align-self:center;margin:4px 0;border:0;border-radius:999px;padding:5px 12px;
  background:var(--primary);color:#fff;font-size:12px;cursor:pointer;box-shadow:var(--shadow)}
.chat-new-btn.hidden{display:none}
#chatBadge.pulse{animation:badgePulse 1.1s ease 2}
@keyframes badgePulse{0%,100%{transform:scale(1)}50%{transform:scale(1.2)}}

/* 成员 */
.member-list{overflow-y:auto;flex:1}
.member{display:flex;align-items:center;gap:9px;padding:9px;border-radius:var(--r-sm)}
.member:hover{background:var(--bg3)}
.member .avatar{width:34px;height:34px;border-radius:50%;flex:0 0 34px;
  background:linear-gradient(135deg,var(--primary),var(--primary2));display:flex;align-items:center;
  justify-content:center;font-size:13px;color:#fff;font-weight:700}
.member .meta{flex:1;min-width:0}
.member .meta b{font-size:13.5px;display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.member .meta small{color:var(--dim);font-size:11.5px}
.member .kick{background:transparent;border:1px solid var(--danger);color:var(--danger);border-radius:var(--r-xs);
  padding:4px 10px;font-size:12px;cursor:pointer}
.member .kick:hover{background:var(--danger);color:#fff}
.owner-tools{border-top:1px solid var(--border);padding-top:12px;margin-top:10px}
.switch-row{display:flex;align-items:center;justify-content:space-between;padding:8px 0;font-size:13.5px;
  border-bottom:1px solid var(--border)}
.switch-row:last-child{border-bottom:0}
.switch-row input{width:44px;height:24px;accent-color:var(--primary)}
.waiting-box{border-top:1px solid var(--border);margin-top:10px;padding-top:10px}
.waiting-box h4{margin:0 0 8px;font-size:13px}
.waiting-item{display:flex;align-items:center;gap:8px;padding:6px 0;font-size:13px}
.waiting-item .act{margin-left:auto;display:flex;gap:5px}
.waiting-item .ok{background:var(--ok);color:#fff;border:0;border-radius:var(--r-xs);padding:4px 10px;cursor:pointer;font-size:12px}
.waiting-item .no{background:var(--danger);color:#fff;border:0;border-radius:var(--r-xs);padding:4px 10px;cursor:pointer;font-size:12px}

/* 共享 */
.share-list{flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:6px;padding-right:4px;min-height:60px}
.share-item{display:flex;align-items:center;gap:9px;padding:9px;border:1px solid var(--border);
  border-radius:var(--r-sm);cursor:pointer;transition:border-color .15s,background .15s}
.share-item:hover,.share-item.active{border-color:var(--primary);background:var(--bg3)}
.si-icon{font-size:18px;flex:0 0 24px;text-align:center}
.si-meta{flex:1;min-width:0}
.si-meta b{display:block;font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.si-meta small{color:var(--dim);font-size:11.5px}
.si-del{background:transparent;border:0;color:var(--dim);cursor:pointer;font-size:14px;padding:2px 7px;border-radius:6px}
.si-del:hover{color:#fff;background:var(--danger2)}
.share-form{display:flex;flex-direction:column;gap:6px;margin-top:10px}
.row-inline{display:flex;gap:6px}
.row-inline input{flex:1}
.share-tips{color:var(--dim);font-size:11.5px;line-height:1.65;margin-bottom:9px}
.setting-group{border-bottom:1px solid var(--border);padding-bottom:10px;margin-bottom:10px}
.setting-group:last-child{border-bottom:0}
.setting-group h4{margin:0 0 6px;font-size:13px;color:var(--dim)}

/* 白板 */
.wb-toolbar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:9px 12px;background:var(--panel);
  border-bottom:1px solid var(--border);backdrop-filter:blur(12px)}
.wb-tools,.wb-actions{display:flex;gap:5px;align-items:center}
.wb-tool,.wb-btn{width:38px;height:38px;border-radius:var(--r-sm);cursor:pointer;background:var(--bg3);
  color:var(--text);border:1px solid var(--border);font-size:16px;display:flex;align-items:center;justify-content:center;
  transition:background .15s,border-color .15s}
.wb-tool .ico{width:18px;height:18px}
.wb-tool:hover,.wb-btn:hover{border-color:var(--primary)}
.wb-tool.active{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;border-color:transparent}
.wb-close{background:var(--danger2);border-color:var(--danger);color:#fff}
.wb-colors{display:flex;gap:5px;align-items:center}
.wb-color{width:24px;height:24px;border-radius:50%;cursor:pointer;border:2px solid var(--border);padding:0}
.wb-color.active{border-color:var(--primary);box-shadow:0 0 0 2px rgba(59,130,246,.35)}
.wb-sizes{display:flex;align-items:center;gap:7px;font-size:12.5px;color:var(--dim)}
.wb-sizes input{width:104px;accent-color:var(--primary)}
.wb-canvas-wrap{position:relative;flex:1;min-height:0;background:#fff}
/* 多白板页签 */
.wb-tabs{display:flex;align-items:center;gap:6px;padding:7px 10px;background:var(--panel);
  border-bottom:1px solid var(--border);overflow-x:auto;scrollbar-width:none}
.wb-tabs::-webkit-scrollbar{display:none}
.wb-tab{flex:none;height:26px;padding:0 13px;border-radius:999px;border:1px solid var(--border);
  background:var(--bg3);color:var(--dim);font-size:12.5px;cursor:pointer;line-height:24px}
.wb-tab.active{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;border-color:transparent}
.wb-tab-add,.wb-tab-del{width:26px;padding:0;text-align:center}
.wb-tab-del{color:var(--danger)}
#wbCanvas{display:block;width:100%;height:100%;cursor:crosshair;touch-action:none;background:#fff}

/* 控制栏 */
.controls{display:flex;align-items:center;justify-content:center;gap:7px;
  padding:11px 12px calc(11px + var(--safe-b));background:var(--bg2);border-top:1px solid var(--border);flex-wrap:wrap}
.ctl{position:relative;display:flex;flex-direction:column;align-items:center;gap:4px;min-width:64px;
  padding:9px 10px;cursor:pointer;background:var(--bg3);color:var(--text);border:1px solid var(--border);
  border-radius:12px;font-size:19px;font-family:inherit;transition:background .15s,border-color .15s}
.ctl .ico{width:20px;height:20px}
.ctl i{font-style:normal;font-size:10.5px;color:var(--dim)}
.ctl:hover{border-color:var(--primary)}
.ctl.on{background:linear-gradient(135deg,var(--primary),var(--primary2));border-color:transparent;color:#fff}
.ctl.on i{color:rgba(255,255,255,.92)}
.ctl.off{background:var(--danger2);border-color:var(--danger);color:#fff}
.ctl.off i{color:rgba(255,255,255,.92)}
.ctl-danger{display:flex;flex-direction:column;align-items:center;gap:4px;min-width:64px;padding:9px 10px;
  cursor:pointer;background:linear-gradient(135deg,var(--danger),var(--danger2));border:0;color:#fff;
  border-radius:12px;font-family:inherit;font-size:19px}
.ctl-danger .ico{width:20px;height:20px}
.ctl-danger i{font-style:normal;font-size:10.5px;color:rgba(255,255,255,.92)}
.badge{position:absolute;top:-4px;right:-4px;background:var(--danger);color:#fff;border-radius:999px;
  font-size:10px;padding:1px 5px;min-width:16px}

/* 字幕 */
.caption-bar{position:absolute;left:12px;right:12px;bottom:12px;z-index:8;background:rgba(0,0,0,.72);
  color:#fff;font-size:14px;line-height:1.6;padding:10px 15px;border-radius:var(--r-sm);
  backdrop-filter:blur(6px);max-height:26%;overflow-y:auto}
.caption-bar .cap-who{color:#93c5fd;font-weight:600;margin-right:6px}

/* 更多面板 */
.more-panel{position:fixed;inset:0;z-index:960;background:rgba(0,0,0,.6);display:flex;
  align-items:center;justify-content:center;padding:20px}
.more-box{background:var(--bg2);border:1px solid var(--border);border-radius:var(--r);padding:20px;
  width:100%;max-width:520px;box-shadow:var(--shadow)}
.more-box h4{margin:0 0 14px;font-size:15px}
.more-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px;margin-bottom:14px}
.more-item{background:var(--bg3);border:1px solid var(--border);border-radius:var(--r-sm);padding:13px;
  cursor:pointer;text-align:left;color:var(--text);font-family:inherit;transition:border-color .15s}
.more-item:hover{border-color:var(--primary)}
.more-item b{display:block;font-size:13.5px;margin-bottom:4px}
.more-item small{color:var(--dim);font-size:11.5px;line-height:1.5}

/* 弹窗 */
.modal{position:fixed;inset:0;z-index:960;background:rgba(0,0,0,.62);display:flex;align-items:center;
  justify-content:center;padding:20px}
.modal-box{background:var(--bg2);border:1px solid var(--border);border-radius:var(--r);padding:22px;
  max-width:400px;width:100%;box-shadow:var(--shadow)}
.modal-box h4{margin:0 0 14px;font-size:15px}
.modal-box p{margin:0;line-height:1.6}
.modal-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:16px}
.toast{position:fixed;left:50%;bottom:100px;transform:translateX(-50%);background:rgba(0,0,0,.88);color:#fff;
  padding:11px 19px;border-radius:999px;font-size:13.5px;z-index:950;max-width:90vw;text-align:center}

/* ============================ 响应式 ============================ */
@media (max-width:820px){
  .join-card{padding:19px;border-radius:16px}
  .join-head h1{font-size:20px}
  #joinScreen{padding:14px 11px calc(14px + var(--safe-b))}
  .grid{grid-template-columns:1fr;grid-auto-rows:minmax(150px,1fr);gap:6px;padding:6px}
  .grid.mode-speaker .tile:not(.speaker){right:7px;top:52px;width:98px;height:74px;
    margin-top:calc(var(--i,0) * 80px)}
  .drawer{width:100%;border-left:0}
  .controls{gap:5px;padding:9px 7px calc(9px + var(--safe-b))}
  .ctl,.ctl-danger{min-width:56px;padding:7px 7px;font-size:17px;border-radius:10px}
  .ctl .ico,.ctl-danger .ico{width:18px;height:18px}
  .ctl i,.ctl-danger i{font-size:9.5px}
  .panel{right:7px;left:7px;top:52px;min-width:0}
  .wb-tool,.wb-btn{width:34px;height:34px;font-size:14px}
  .wb-tool .ico{width:16px;height:16px}
  .wb-sizes input{width:70px}
  .toast{bottom:88px;font-size:12.5px}
  .more-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:390px){
  .ctl i,.ctl-danger i{display:none}
  .ctl,.ctl-danger{min-width:46px}
}


/* ================= 修复补丁 ================= */

/* 聊天按钮收到消息时闪烁 */
.ctl.attn{animation:attn .8s ease 3}@keyframes attn{0%,100%{transform:scale(1)}50%{transform:scale(1.15);box-shadow:0 0 0 6px rgba(59,130,246,.35)}}

/* 投票卡片 */
.poll-card{padding:10px 14px}.poll-q{margin-bottom:8px;font-weight:600}.poll-btns{display:flex;gap:8px}.poll-btns button{flex:1}

/* 文件发送进度条 */
.chat-file .fp{margin-left:6px;color:var(--muted)}.chat-file .fprog{height:4px;background:var(--card);border-radius:2px;margin-top:6px;overflow:hidden}.chat-file .fprog i{display:block;height:100%;background:var(--primary);transition:width .2s ease;border-radius:2px}

/* 音频被拦截时的横幅提示 */
.banner.warn{background:linear-gradient(135deg,#f59e0b,#d97706);color:#fff;cursor:pointer}

/* ==========================================================================
   二阶段：科技感美化 + 手机竖屏优化
   ========================================================================== */

/* --- 主色升级为科技青蓝（管理后台 brandColor 仍可覆盖 --primary） --- */
:root{
  --primary:#22d3ee; --primary2:#0284c7; --primary-soft:rgba(34,211,238,.13);
  --glow:0 0 18px rgba(34,211,238,.35);
}
body.light{--primary:#0284c7;--primary2:#0369a1;--glow:0 0 14px rgba(2,132,199,.25)}

/* --- 加入页：深空网格背景 + 卡片描边光 --- */
#joinScreen{background:
  radial-gradient(900px 500px at 50% -12%,rgba(34,211,238,.14),transparent 60%),
  radial-gradient(700px 420px at 85% 110%,rgba(59,130,246,.10),transparent 60%),
  linear-gradient(rgba(34,211,238,.045) 1px,transparent 1px),
  linear-gradient(90deg,rgba(34,211,238,.045) 1px,transparent 1px),
  var(--bg);
  background-size:auto,auto,44px 44px,44px 44px,auto}
.join-card{border-color:rgba(56,189,248,.22);
  box-shadow:var(--shadow),0 0 0 1px rgba(34,211,238,.06),0 0 42px rgba(34,211,238,.07)}
.logo{color:var(--primary);animation:logoPulse 3.2s ease-in-out infinite}
@keyframes logoPulse{0%,100%{filter:drop-shadow(0 0 8px rgba(34,211,238,.5))}50%{filter:drop-shadow(0 0 20px rgba(34,211,238,.85))}}

/* --- 主按钮发光 --- */
.btn-primary{box-shadow:0 4px 16px rgba(34,211,238,.28)}
.btn-primary:hover{filter:brightness(1.1);box-shadow:0 6px 22px rgba(34,211,238,.42)}

/* --- 会议区：玻璃拟态控制栏 + 磁吸 hover --- */
.controls{background:rgba(10,14,22,.82);backdrop-filter:blur(16px);border-top-color:rgba(56,189,248,.16)}
.ctl,.ctl-danger{transition:transform .12s,background .15s,border-color .15s,box-shadow .15s}
.ctl:hover{transform:translateY(-2px);box-shadow:0 6px 16px rgba(0,0,0,.35)}
.ctl.on{box-shadow:var(--glow)}

/* --- 画面格入场动画 + 说话者光晕 --- */
.tile{animation:tileIn .28s ease-out}
@keyframes tileIn{from{opacity:0;transform:scale(.96)}to{opacity:1;transform:scale(1)}}
.tile.speaking{box-shadow:0 0 0 2px rgba(34,197,94,.5),0 0 18px rgba(34,197,94,.3)}

/* --- 更多面板：毛玻璃遮罩 + 卡片上浮 --- */
.more-panel{backdrop-filter:blur(6px)}
.more-item{transition:border-color .15s,transform .12s,box-shadow .15s}
.more-item:hover{border-color:var(--primary);transform:translateY(-2px);box-shadow:var(--glow)}
.more-item.on{border-color:var(--danger);background:rgba(239,68,68,.12)}

/* --- 滚动条 --- */
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-thumb{background:var(--bg4);border-radius:4px}
::-webkit-scrollbar-thumb:hover{background:var(--border)}
::-webkit-scrollbar-track{background:transparent}

/* --- 键盘可达性 --- */
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.ctl:focus-visible,.tb-btn:focus-visible,.wb-tool:focus-visible{outline-offset:0}

/* --- 减少动态偏好 --- */
@media (prefers-reduced-motion:reduce){
  .tile,.logo{animation:none}
  .ctl,.more-item{transition:none}
}

/* --- 手机竖屏：布局与工具栏压缩 --- */
@media (max-width:640px){
  .ctl i,.ctl-danger i{display:none}
  .ctl,.ctl-danger{min-width:46px;padding:8px 9px;border-radius:10px}
  .controls{gap:6px;padding:8px 8px calc(8px + var(--safe-b))}
  .drawer{width:100%}
  .panel{right:8px;left:8px;top:52px;min-width:0}
  .caption-bar{left:8px;right:8px;bottom:8px;font-size:12.5px;padding:8px 11px}
  .more-grid{grid-template-columns:repeat(2,1fr)}
  /* 白板手机端：工具栏两行紧凑排布，画布吃满剩余空间 */
  .wb-toolbar{gap:6px;padding:6px 8px}
  .wb-tool,.wb-btn{width:32px;height:32px;font-size:13px;border-radius:8px}
  .wb-color{width:20px;height:20px}
  .wb-sizes input{width:60px}
  .wb-canvas-wrap{min-height:0}
}
@media (max-width:640px) and (orientation:portrait){
  .grid{grid-template-columns:1fr;grid-auto-rows:1fr;gap:6px;padding:6px}
  .grid.count-2{grid-template-columns:1fr}
  .grid.mode-speaker .tile:not(.speaker){width:92px;height:68px;right:8px;top:50px;
    margin-top:calc(var(--i,0) * 74px)}
  .topbar{padding:calc(8px + var(--safe-t)) 8px 8px}
  .room-chip,.stat-chip{font-size:11px;padding:4px 9px}
}
@media (max-width:640px) and (orientation:landscape){
  .controls{padding:6px 8px calc(6px + var(--safe-b))}
  .grid{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
}

/* ==========================================================================
   三阶段：浮动小窗（聊天/共享）+ 主讲布局（远端大画面+本地可拖小窗）
   ========================================================================== */

/* 抽屉置顶（成员/设置），不被浮动小窗遮挡 */
.drawer{z-index:30}

/* 浮动小窗 */
.float-win{position:absolute;right:12px;bottom:86px;z-index:20;width:min(350px,calc(100% - 24px));
  max-height:min(62%,520px);display:flex;flex-direction:column;overflow:hidden;
  background:var(--panel);border:1px solid rgba(56,189,248,.22);border-radius:var(--r);
  box-shadow:var(--shadow),0 0 24px rgba(34,211,238,.08);backdrop-filter:blur(16px)}
.fw-head{display:flex;align-items:center;justify-content:space-between;padding:9px 13px;
  border-bottom:1px solid var(--border);font-size:13.5px;font-weight:600;cursor:grab;
  user-select:none;touch-action:none;background:rgba(34,211,238,.05)}
.fw-head:active{cursor:grabbing}
.fw-close{background:transparent;border:0;color:var(--dim);font-size:19px;cursor:pointer;
  padding:0 3px;line-height:1}
.fw-close:hover{color:var(--text)}
.fw-body{flex:1;min-height:0;display:flex;flex-direction:column;padding:11px;overflow:hidden}
.fw-chat{gap:0;position:relative}
@media (max-width:640px){
  .float-win{right:8px;left:8px;bottom:76px;width:auto;max-height:56%}
}

/* 主讲布局：远端全画面，本地小窗可拖动 */
.grid{position:relative}
.grid.mode-speaker .tile.speaker{grid-column:1/-1}
.grid.mode-speaker .tile.pip{position:absolute;right:12px;bottom:12px;width:172px;height:110px;
  z-index:9;cursor:grab;touch-action:none;border-color:var(--primary);
  box-shadow:0 8px 24px rgba(0,0,0,.5),var(--glow)}
.grid.mode-speaker .tile.pip:active{cursor:grabbing}
.grid.mode-speaker .tile:not(.speaker):not(.pip){position:absolute;right:12px;top:58px;
  width:152px;height:104px;margin-top:calc(var(--i,0) * 112px);z-index:6}
@media (max-width:640px){
  .grid.mode-speaker .tile.pip{width:116px;height:76px;right:8px;bottom:8px}
  .grid.mode-speaker .tile:not(.speaker):not(.pip){width:92px;height:68px;right:8px;top:50px;
    margin-top:calc(var(--i,0) * 74px)}
}

/* 控制栏按钮按下中（异步确认期间） */
.ctl[disabled],.ctl-danger[disabled]{opacity:.55;cursor:wait}

/* 聊天内文件预览 */
.chat-file .fprev{max-width:100%;max-height:180px;border-radius:var(--r-xs);margin-top:6px;display:block}
.chat-file video.fprev{background:#000}

/* ==== PIP-NAME-DIM: 小窗名字标签不挡人（缩小+平时淡化，触摸/拖动短暂显示） ==== */
.grid.mode-speaker .tile.pip .tile-name{left:4px;bottom:4px;max-width:62%;padding:2px 6px;font-size:10px;background:rgba(0,0,0,.45)}
.tile.pip .tile-name{transition:opacity .45s ease}
.tile.pip.name-dim .tile-name{opacity:.12}
/* ==== FW-DRAGGING: 浮窗拖动中禁用动画，避免 rect 取到 panelIn 动画中间态 ==== */
.float-win.dragging{animation:none!important;transition:none!important}
/* ==== LAST-ROOM: 首页「上次房间」重新加入卡片 ==== */
.lastroom{display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:8px 12px;margin-bottom:10px;border-radius:var(--r-sm,10px);
  background:rgba(59,130,246,.08);border:1px solid rgba(59,130,246,.35);font-size:13px}
.lastroom .lr-txt b{font-family:inherit;font-size:14px}
.lastroom.hidden{display:none}

/* ==========================================================================
   屏幕共享布局：屏幕内容占左侧大画面，摄像头在右侧上下排列
   ========================================================================== */
.stage.has-screen .share-focus{inset:8px 268px 8px 8px;z-index:8;border-radius:var(--r);
  overflow:hidden;border:1px solid rgba(56,189,248,.25);box-shadow:var(--glow)}
.stage.has-screen .grid{position:absolute;right:0;top:0;bottom:0;width:260px;
  display:flex;flex-direction:column;gap:8px;padding:8px;height:auto}
.stage.has-screen .grid .tile{flex:1;min-height:0;width:100%;position:relative;
  left:auto;right:auto;top:auto;bottom:auto;margin:0}
/* 本地画面固定右上、远端固定右下（2 人场景） */
.stage.has-screen .grid .tile[data-me="1"]{order:-1}
@media (max-width:820px){
  .stage.has-screen .share-focus{inset:8px 8px 132px 8px}
  .stage.has-screen .grid{top:auto;left:0;right:0;bottom:0;width:auto;height:124px;
    flex-direction:row}
  .stage.has-screen .grid .tile{height:100%;width:auto;aspect-ratio:16/10}
}

/* ==========================================================================
   白板布局：白板占左侧大画面，双方视频在右侧上下排列
   ========================================================================== */
.stage.wb-on .whiteboard{inset:8px 268px 8px 8px;border-radius:var(--r);
  overflow:hidden;border:1px solid rgba(56,189,248,.25);box-shadow:var(--glow)}
.stage.wb-on .grid{position:absolute;right:0;top:0;bottom:0;width:260px;
  display:flex;flex-direction:column;gap:8px;padding:8px;height:auto;z-index:12}
.stage.wb-on .grid .tile{flex:1;min-height:0;width:100%;position:relative;
  left:auto;right:auto;top:auto;bottom:auto;margin:0}
/* 本地画面右上、远端右下（2 人场景） */
.stage.wb-on .grid .tile.local{order:-1}
@media (max-width:820px){
  .stage.wb-on .whiteboard{inset:8px 8px 132px 8px}
  .stage.wb-on .grid{top:auto;left:0;right:0;bottom:0;width:auto;height:124px;
    flex-direction:row}
  .stage.wb-on .grid .tile{height:100%;width:auto;aspect-ratio:16/10}
}

/* ==========================================================================
   四阶段（2026-11 精简）：面板入场动画 + 输入焦点态
   原"科技感美化/极光/流光"装饰层已全部移除（大厂设计规范：无装饰动画）
   ========================================================================== */
.panel,.modal-box,.more-box,.float-win{animation:panelIn .18s ease-out}
@keyframes panelIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
input[type=text]:focus,input[type=password]:focus,input[type=number]:focus,select:focus,textarea:focus{
  border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft);outline:none}
@media (prefers-reduced-motion:reduce){.panel,.modal-box,.more-box,.float-win{animation:none}}

/* ==========================================================================
   六阶段：会议内图标系统化（描边 SVG 图标配套样式，不动任何功能结构）
   ========================================================================== */

/* --- 更多功能项：图标块 + 文字两栏（仅按钮内部排版） --- */
.more-item{display:flex;align-items:center;gap:11px;text-align:left}
.mi-ico{flex:0 0 34px;width:34px;height:34px;border-radius:9px;display:flex;align-items:center;justify-content:center;
  color:var(--primary);background:color-mix(in srgb,var(--primary) 12%,transparent);
  border:1px solid color-mix(in srgb,var(--primary) 22%,transparent);transition:box-shadow .2s,background .2s}
.mi-ico svg{width:17px;height:17px}
.more-item:hover .mi-ico{box-shadow:0 0 14px color-mix(in srgb,var(--primary) 40%,transparent);
  background:color-mix(in srgb,var(--primary) 20%,transparent)}
.mi-txt{flex:1;min-width:0}
.mi-txt b{display:block;font-size:13.5px;margin-bottom:3px}
.mi-txt small{color:var(--dim);font-size:11.5px;line-height:1.5;display:block}
/* 录制进行中的红色态：图标块同步变红 */
.more-item.on .mi-ico{color:#fff;background:var(--danger2);border-color:var(--danger)}

/* --- REC 指示：呼吸圆点 --- */
.rec-dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:#fff;margin-right:6px;
  vertical-align:1px;animation:pulse 1.2s infinite}

/* --- 画面格麦克风徽章：SVG 尺寸 --- */
.mic-badge .ico{width:12px;height:12px;vertical-align:-1px}

/* --- 各关闭/工具按钮内 SVG 尺寸统一 --- */
.drawer-close .ico{width:18px;height:18px}
.fw-close .ico{width:15px;height:15px;vertical-align:-2px}
#emojiToggle .ico,#chatFileBtn .ico{width:16px;height:16px;vertical-align:-3px}
.tb-btn .ico{vertical-align:0}
.wb-btn .ico{width:16px;height:16px}

/* ==========================================================================
   七阶段（2026-11 精简）：悬浮控制坞布局（按钮位置/大小/顺序不变）
   玻璃底座/流光按钮/渐变标题已移除，视觉样式统一由文件末尾设计系统接管
   ========================================================================== */
.controls{width:fit-content;max-width:calc(100% - 20px);margin:8px auto calc(10px + var(--safe-b))}
@media (max-width:640px){
  .controls{margin:6px auto calc(8px + var(--safe-b));max-width:calc(100% - 12px)}
}

/* ==========================================================================
   九阶段：时钟浮动窗（时钟/番茄钟/闹钟/计时器）
   ========================================================================== */
.clock-win{width:288px}
.clock-body{padding:12px 14px;display:flex;flex-direction:column;gap:12px}
.ck-tabs{display:flex;gap:4px;background:rgba(255,255,255,.05);border-radius:10px;padding:3px}
.ck-tab{flex:1;border:none;background:transparent;color:var(--dim);font-size:12px;padding:6px 0;
  border-radius:8px;cursor:pointer;transition:background .18s,color .18s}
.ck-tab.on{background:color-mix(in srgb,var(--primary) 22%,transparent);color:var(--primary);font-weight:600}
.ck-pane{display:flex;flex-direction:column;align-items:center;gap:8px;min-height:118px;justify-content:center}
.ck-big{font-family:"Orbitron",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:34px;font-weight:700;letter-spacing:3px;line-height:1;
  color:var(--text);text-shadow:0 0 18px color-mix(in srgb,var(--primary) 35%,transparent)}
.ck-sub{font-size:12px;color:var(--dim);letter-spacing:1px}
.ck-sub.break{color:var(--ok)}
.ck-peer{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--dim);
  border-top:1px dashed var(--border2);padding-top:8px;width:100%;justify-content:center}
.ck-peer b{font-family:"Orbitron",ui-monospace,monospace;color:var(--primary);letter-spacing:1px;font-weight:600}
.ck-row{display:flex;gap:10px;width:100%;justify-content:center}
.ck-row label{display:flex;flex-direction:column;gap:4px;font-size:11.5px;color:var(--dim);flex:1}
.ck-row input{width:100%;padding:7px 10px;font-size:14px;text-align:center}
.ck-row input[type=time]{font-family:"Orbitron",ui-monospace,monospace;letter-spacing:2px}
.ck-btns{margin-top:2px}
.ck-btns .btn{min-width:86px}
.ck-mode{display:flex;align-items:center;justify-content:space-between;gap:8px;
  border-top:1px dashed var(--border2);padding-top:10px;font-size:11.5px;color:var(--dim)}
.ck-seg{display:flex;gap:4px;background:rgba(255,255,255,.05);border-radius:9px;padding:3px}
.ck-seg button{border:none;background:transparent;color:var(--dim);font-size:11.5px;
  padding:5px 10px;border-radius:7px;cursor:pointer;transition:background .18s,color .18s}
.ck-seg button.on{background:color-mix(in srgb,var(--primary) 22%,transparent);color:var(--primary);font-weight:600}
/* 响铃：窗口边框主题色脉冲 */
.clock-win.ringing{border-color:var(--primary);animation:ckRing 0.9s ease-in-out infinite}
@keyframes ckRing{
  0%,100%{box-shadow:0 0 0 0 color-mix(in srgb,var(--primary) 55%,transparent)}
  50%{box-shadow:0 0 0 10px transparent}
}
/* 控制栏时钟按钮提醒动画（与 attn 复用已有样式） */
@media (max-width:520px){.clock-win{width:260px}.ck-big{font-size:29px}}

/* ==========================================================================
   音乐小窗：iframe 原样嵌入独立网页播放器（样式与主页隔离）
   ========================================================================== */
.music-win{width:min(820px,94vw);max-height:min(88%,780px)}
.music-body{padding:0;overflow:hidden;display:flex}
.music-body iframe{flex:1;width:100%;height:100%;border:0;display:block;background:#020617;min-height:460px}
.ms-tabs{display:flex;gap:4px;background:rgba(255,255,255,.05);border-radius:10px;padding:3px;flex:none}
.ms-tab{flex:1;border:none;background:transparent;color:var(--dim);font-size:12px;padding:6px 0;
  border-radius:8px;cursor:pointer;transition:background .18s,color .18s;white-space:nowrap}
.ms-tab.on{background:color-mix(in srgb,var(--primary) 22%,transparent);color:var(--primary);font-weight:600}
.ms-pane{flex:1;min-height:0;display:flex;flex-direction:column;gap:8px;overflow:hidden}
.ms-search-form{display:flex;gap:6px;flex:none}
.ms-search-form input{flex:1;min-width:0;padding:9px 11px;font-size:14px}
.ms-pl-tabs{display:flex;gap:4px;align-items:center;flex-wrap:wrap;flex:none}
.ms-pl-tab{border:none;background:rgba(255,255,255,.05);color:var(--dim);font-size:11.5px;
  padding:5px 10px;border-radius:8px;cursor:pointer;transition:background .18s,color .18s}
.ms-pl-tab.on{background:color-mix(in srgb,var(--primary) 22%,transparent);color:var(--primary);font-weight:600}
.ms-playall{margin-left:auto;padding:5px 10px;font-size:11.5px}
.ms-queue-tools{display:flex;justify-content:flex-end;flex:none}
.ms-list{flex:1;min-height:0;overflow-y:auto;display:flex;flex-direction:column;gap:4px;
  -webkit-overflow-scrolling:touch;padding-right:2px}
.ms-row{display:flex;align-items:center;gap:8px;padding:5px 7px;border-radius:10px;
  background:rgba(255,255,255,.03);border:1px solid var(--border2);cursor:default;min-width:0;
  transition:border-color .15s,background .15s}
.ms-row:hover{border-color:var(--primary);background:rgba(255,255,255,.06)}
.ms-idx{width:18px;text-align:center;font-size:11px;color:var(--dim2);flex:none}
.ms-idx.cur{color:var(--primary);font-weight:700}
.ms-thumb{width:34px;height:34px;border-radius:7px;object-fit:cover;flex:none;background:var(--bg3)}
span.ms-thumb{background:linear-gradient(135deg,var(--bg3),var(--bg4))}
.ms-info{flex:1;min-width:0;display:flex;flex-direction:column}
.ms-info b{font-size:12.5px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ms-info small{font-size:11px;color:var(--dim);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ms-dur{font-size:10.5px;color:var(--dim2);flex:none;font-variant-numeric:tabular-nums}
.ms-ops{display:flex;gap:1px;flex:none}
.ms-op{border:none;background:transparent;color:var(--dim);cursor:pointer;font-size:13px;
  padding:5px 6px;border-radius:7px;line-height:1;transition:color .15s,background .15s}
.ms-op:hover{color:var(--primary);background:rgba(255,255,255,.07)}
.ms-op.ms-fav.on{color:var(--danger)}
.ms-empty{padding:18px 8px;text-align:center;color:var(--dim);font-size:12.5px;line-height:1.6}
.ms-sec{font-size:11px;color:var(--dim2);padding:7px 2px 1px;border-top:1px dashed var(--border2);margin-top:6px}
/* 歌词 */
.ms-lyric{flex:1;min-height:0;overflow-y:auto;padding:8px 4px;display:flex;flex-direction:column;
  gap:10px;text-align:center;-webkit-overflow-scrolling:touch}
.ms-lrc{font-size:12.5px;color:var(--dim2);cursor:pointer;padding:2px 8px;border-radius:8px;
  transition:color .2s,font-size .2s;line-height:1.5}
.ms-lrc:hover{color:var(--text)}
.ms-lrc.on{color:var(--primary);font-weight:600;font-size:14px;
  text-shadow:0 0 16px color-mix(in srgb,var(--primary) 40%,transparent)}
/* 播放器条 */
.ms-player{border-top:1px solid var(--border);padding-top:8px;display:flex;flex-direction:column;
  gap:6px;flex:none}
.ms-prow1{display:flex;align-items:center;gap:9px;min-width:0}
.ms-cover{width:42px;height:42px;border-radius:9px;object-fit:cover;flex:none;
  background:linear-gradient(135deg,var(--bg3),var(--bg4))}
.ms-pinfo{flex:1;min-width:0;display:flex;flex-direction:column}
.ms-pinfo b{font-size:13px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ms-pinfo small{font-size:11px;color:var(--dim);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ms-favbtn{font-size:16px}
.ms-favbtn.on{color:var(--danger)}
.ms-prow2{display:flex;align-items:center;gap:8px}
.ms-time{font-size:10.5px;color:var(--dim2);width:32px;text-align:center;flex:none;font-variant-numeric:tabular-nums}
.ms-seek{flex:1;min-width:0;height:4px;accent-color:var(--primary);cursor:pointer}
.ms-prow3{display:flex;align-items:center;gap:6px;justify-content:center;flex-wrap:wrap}
.ms-playbtn{width:38px;height:38px;border-radius:50%;border:none;cursor:pointer;font-size:14px;
  color:#fff;background:linear-gradient(135deg,var(--primary),var(--primary2));
  display:flex;align-items:center;justify-content:center;transition:transform .1s,filter .15s}
.ms-playbtn:hover{filter:brightness(1.1)}
.ms-playbtn:active{transform:scale(.94)}
.ms-level{width:auto;flex:none;padding:5px 7px;font-size:11px;border-radius:8px;
  background:var(--bg3);color:var(--text);border:1px solid var(--border)}
.ms-vol{width:64px;flex:none;height:4px;accent-color:var(--primary);cursor:pointer}
#msSyncBtn.on{color:var(--primary)}
.ms-ctl-hint{font-size:10.5px;color:var(--warn);margin-left:6px;font-weight:400}
.ms-scope{display:flex;align-items:center;justify-content:space-between;gap:8px;
  border-top:1px dashed var(--border2);padding-top:6px;font-size:11.5px;color:var(--dim)}
.ms-seg{display:flex;gap:3px;background:rgba(255,255,255,.05);border-radius:8px;padding:2px}
.ms-seg button{border:none;background:transparent;color:var(--dim);font-size:11.5px;
  padding:4px 10px;border-radius:6px;cursor:pointer;transition:background .18s,color .18s}
.ms-seg button.on{background:color-mix(in srgb,var(--primary) 22%,transparent);color:var(--primary);font-weight:600}
.ms-playbtn.need-tap{animation:msNeedTap 1.2s ease-in-out infinite}
@keyframes msNeedTap{
  0%,100%{box-shadow:0 0 0 0 color-mix(in srgb,var(--primary) 55%,transparent)}
  50%{box-shadow:0 0 0 8px transparent}
}
/* 移动端：音乐小窗贴近工具栏（下移），高度固定让 iframe 内列表占满剩余空间 */
@media (max-width:640px){
  .music-win{bottom:10px;height:calc(100dvh - 132px);max-height:none}
  .music-body iframe{min-height:0}
}

/* ==========================================================================
   十阶段：天气胶囊（仅桌面端）+ 文件预览优化
   ========================================================================== */
.weather-pill{display:inline-flex;align-items:center;gap:6px;margin-right:6px;
  padding:5px 11px;border-radius:999px;font-size:12.5px;line-height:1;
  color:var(--text);background:color-mix(in srgb,var(--primary) 10%,rgba(255,255,255,.06));
  border:1px solid color-mix(in srgb,var(--primary) 30%,transparent);
  box-shadow:0 0 12px color-mix(in srgb,var(--primary) 12%,transparent);
  white-space:nowrap;cursor:default;user-select:none;
  animation:wPillIn .7s cubic-bezier(.22,1,.36,1) both}
.weather-pill .wico{width:16px;height:16px;color:var(--primary);flex:none;
  filter:drop-shadow(0 0 5px color-mix(in srgb,var(--primary) 55%,transparent))}
.weather-pill .wtemp{font-family:"Orbitron",ui-monospace,monospace;font-weight:700;font-size:13px;
  color:var(--primary);letter-spacing:.5px}
.weather-pill .wcity{color:var(--dim);max-width:96px;overflow:hidden;text-overflow:ellipsis}
@keyframes wPillIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}
/* 手机端紧凑化：只留图标 + 温度，隐藏城市名，缩小内边距避免顶栏拥挤 */
@media (max-width:820px){
  .weather-pill{padding:4px 8px;gap:4px;margin-right:4px}
  .weather-pill .wcity{display:none}
  .weather-pill .wico{width:14px;height:14px}
  .weather-pill .wtemp{font-size:12px}
}

/* 聊天文件：图片直接预览、点击可下载；无文件名文字。
   所有预览媒体严格限制在聊天窗/消息气泡宽度内，绝不溢出 */
#chatLog .msg{max-width:92%}
#chatLog img.fprev,#chatLog video.fprev{box-sizing:border-box;display:block;max-width:100%}
.fprev-link{display:block;width:260px;max-width:100%;border-radius:12px;overflow:hidden;cursor:zoom-in}
.fprev-link .fprev{width:100%;height:auto;max-height:300px;object-fit:cover;border-radius:12px;
  transition:transform .25s ease}
.fprev-link:hover .fprev{transform:scale(1.03)}
#chatLog video.fprev{width:260px;max-width:100%;height:auto;max-height:240px;object-fit:contain;
  background:#000;border-radius:12px}
.fprev-a{width:230px;max-width:100%;height:36px}
.chat-file.fdoc{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:10px;
  background:rgba(255,255,255,.06);max-width:260px}
.chat-file.fdoc .fclip{width:16px;height:16px;color:var(--primary);flex:none}
.chat-file.fdoc a{color:var(--primary);text-decoration:none;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.chat-file.fdoc small{color:var(--dim);flex:none}
.fprog-wrap{display:flex;flex-direction:column;gap:6px;min-width:180px}

/* ==========================================================================
   五阶段：设备/横竖屏布局 + 更多快捷项 + 白板触控
   ========================================================================== */

/* 3/4/多人网格：平板两列、桌面自适应 */
.grid.count-3:not(.mode-speaker){grid-template-columns:repeat(2,1fr);grid-template-rows:1fr 1fr}
.grid.count-3:not(.mode-speaker) .tile:first-child{grid-column:1/-1}
.grid.count-4:not(.mode-speaker){grid-template-columns:repeat(2,1fr);grid-template-rows:1fr 1fr}
.grid.count-many:not(.mode-speaker){grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}

/* 手机竖屏：两人强制上下叠放 */
body[data-device="phone"][data-orient="portrait"] .grid.count-2:not(.mode-speaker),
.grid.dev-phone.orient-portrait.count-2:not(.mode-speaker){
  grid-template-columns:1fr;grid-template-rows:1fr 1fr;
}
/* 手机横屏：两人左右并排 */
body[data-device="phone"][data-orient="landscape"] .grid.count-2:not(.mix-stack):not(.mode-speaker),
.grid.dev-phone.orient-landscape.count-2:not(.mix-stack):not(.mode-speaker){
  grid-template-columns:1fr 1fr;grid-template-rows:1fr;
}
/* 平板：两人左右；竖屏可叠放由 .mix-stack 接管 */
@media (min-width:641px) and (max-width:1100px){
  .grid.count-2:not(.mix-stack):not(.mode-speaker){grid-template-columns:1fr 1fr}
  .grid.count-3:not(.mode-speaker),.grid.count-4:not(.mode-speaker){grid-template-columns:1fr 1fr}
  .stage.wb-on .whiteboard,.stage.has-screen .share-focus{inset:8px 220px 8px 8px}
  .stage.wb-on .grid,.stage.has-screen .grid{width:212px}
}

/* 桌面大屏：两人更舒展 */
@media (min-width:1101px){
  .grid.count-2:not(.mix-stack):not(.mode-speaker){grid-template-columns:1fr 1fr;gap:10px;padding:10px}
  .grid.count-1{max-width:1280px}
}

/* 背景虚化（SDK 不可用时的本地观感增强：轻微柔焦） */
.tile.bg-blur-on video,.preview-wrap video.bg-blur-on{
  filter:contrast(1.04) saturate(1.06);
}
.tile.bg-blur-on .video-slot::after{
  content:"";position:absolute;inset:0;pointer-events:none;z-index:2;
  box-shadow:inset 0 0 48px 18px rgba(5,7,12,.35);
}

/* 白板触控与手机底栏 */
#wbCanvas{touch-action:none;-webkit-user-select:none;user-select:none}
@media (max-width:640px) and (orientation:portrait){
  .stage.wb-on .whiteboard{inset:8px 8px 118px 8px}
  .stage.wb-on .grid{height:110px}
  .wb-toolbar{flex-wrap:wrap;max-height:72px;overflow:auto}
}
@media (max-width:640px) and (orientation:landscape){
  .stage.wb-on .whiteboard{inset:8px 168px 8px 8px}
  .stage.wb-on .grid{width:160px;height:auto;top:0;bottom:0;right:0;left:auto;flex-direction:column}
  .stage.wb-on .grid .tile{width:100%;height:auto;aspect-ratio:16/10;flex:1}
}

/* 更多面板：快捷开关高亮 */
.more-item.on{border-color:var(--primary);background:var(--primary-soft);box-shadow:var(--glow)}
.more-item.on small{color:var(--primary)}
@media (max-width:820px){
  .more-grid{grid-template-columns:repeat(2,1fr);max-height:min(70vh,560px);overflow:auto}
}

/* OPT-20261009: UI polish */
:root{ --radius:14px; }
button, .btn, .tb-btn, .more-item{ border-radius:12px; transition:transform .12s ease, background .15s ease; }
.tb-btn:active, button:active{ transform:scale(.96); }
.panel.stats-panel{ min-width:250px; border-radius:14px; box-shadow:0 12px 40px rgba(0,0,0,.35); }
.tile{ border-radius:14px; overflow:hidden; box-shadow:0 6px 24px rgba(0,0,0,.28); }
.tile video{ background:#000; }
.caption-bar{ border-radius:12px; line-height:1.6; font-size:14px; }
#previewVideo{ border-radius:12px; }
.stat-row b{ font-variant-numeric:tabular-nums; }
@media (max-width:640px){ .toolbar{ gap:6px; } .tb-btn{ width:44px; height:44px; } }

/* MOBILE-CTLBAR-SCROLL: 手机端底部控件栏改为单行、可左右横向滑动，避免折成多行遮挡画面 */
@media (max-width:640px){
  .controls{width:auto;max-width:none;margin:6px 8px calc(8px + var(--safe-b));
    flex-wrap:nowrap;overflow-x:auto;overflow-y:hidden;justify-content:flex-start;
    -webkit-overflow-scrolling:touch;scrollbar-width:none;-ms-overflow-style:none}
  .controls::-webkit-scrollbar{display:none}
  .ctl,.ctl-danger{flex:0 0 auto}
}

/* ==========================================================================
   LM-20261104: 双人画面「绝不裁剪」布局（两模式 + 屏幕共享）
   --------------------------------------------------------------------------
   原则：所有 video 一律 object-fit:contain，只做等比缩放，永不裁切画面。
   模式一 .lm-pip   ：对方居中铺满（长边贴屏幕边），自己悬浮小窗（等比、可拖动）
   模式二 .lm-split ：竖屏上下分屏（上=对方 / 下=自己）；横屏左右分栏（左=自己 / 右=对方）
   屏幕共享（.lm-two.has-screen）：
     横屏 → 共享占左侧整列，右侧上下两格显示双方；
     竖屏 → 共享占上，下方左右两格显示双方。
   ========================================================================== */

/* ---------- 全局兜底：SDK 会给自己的 <video>/<canvas> 写内联 object-fit:cover ----------
   默认渲染模式 RENDER_MODE_HIDDEN 会映射成 cover（裁切），这里用 !important 强制完整显示 */
.tile video,.tile canvas,.tile .video-slot video,.tile .video-slot canvas,
.share-focus video,.share-focus canvas,.share-slot video,.share-slot canvas{
  object-fit:contain!important;object-position:center!important}

/* ---------- 模式一：远端全屏 + 本地真实比例小窗 ---------- */
.grid.lm-pip{display:block;padding:0;gap:0}
.grid.lm-pip .tile.speaker{position:absolute;inset:0;width:auto;height:auto;min-height:0;margin:0;
  border:0;border-radius:0;box-shadow:none}
.grid.lm-pip .tile.speaker video,
.grid.lm-pip .tile.speaker .video-slot{width:100%;height:100%;object-fit:contain}
.grid.lm-pip .tile.pip{position:absolute;right:12px;bottom:12px;left:auto;top:auto;z-index:9;
  margin:0;min-width:0;min-height:0;cursor:grab;touch-action:none;background:#000;
  border-color:var(--primary);box-shadow:0 8px 24px rgba(0,0,0,.55),var(--glow)}
.grid.lm-pip .tile.pip:active{cursor:grabbing}
.grid.lm-pip .tile.pip video,
.grid.lm-pip .tile.pip .video-slot{width:100%;height:100%;object-fit:contain}
.grid.lm-pip .tile.pip .tile-name{left:4px;bottom:4px;max-width:64%;padding:2px 7px;font-size:11px;
  background:rgba(0,0,0,.45)}

/* ---------- 模式二：分屏（竖屏上下 / 横屏左右） ---------- */
.grid.lm-split{gap:8px;padding:8px}
body[data-orient="portrait"] .grid.lm-split{
  grid-template-columns:minmax(0,1fr);grid-template-rows:minmax(0,1fr) minmax(0,1fr)}
body[data-orient="landscape"] .grid.lm-split{
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);grid-template-rows:minmax(0,1fr)}
.grid.lm-split .tile{position:relative;inset:auto;left:auto;right:auto;top:auto;bottom:auto;
  width:100%;height:100%;min-width:0;min-height:0;margin:0;aspect-ratio:auto}
.grid.lm-split .tile video,
.grid.lm-split .tile .video-slot{width:100%;height:100%;object-fit:contain}

/* ---------- 屏幕共享（双人）：共享区 + 双方画面 ---------- */
body[data-orient="landscape"] .stage.lm-two.has-screen{
  display:grid;grid-template-columns:minmax(0,2.1fr) minmax(0,1fr);
  grid-template-rows:minmax(0,1fr);gap:8px;padding:8px}
body[data-orient="portrait"] .stage.lm-two.has-screen{
  display:grid;grid-template-columns:minmax(0,1fr);
  grid-template-rows:auto minmax(0,1fr);gap:8px;padding:8px}
.stage.lm-two.has-screen .share-focus{position:relative;inset:auto;order:0;
  width:auto;height:auto;min-width:0;min-height:0;margin:0;
  z-index:8;border-radius:var(--r);overflow:hidden}
body[data-orient="portrait"] .stage.lm-two.has-screen .share-focus{aspect-ratio:16/9;height:auto}
/* 老浏览器不支持 aspect-ratio 时给个固定高度兜底，绝不让共享区塌成 0 */
@supports not (aspect-ratio:16/9){
  body[data-orient="portrait"] .stage.lm-two.has-screen .share-focus{height:36vh}
}
.stage.lm-two.has-screen .share-focus video,
.stage.lm-two.has-screen .share-slot,
.stage.lm-two.has-screen .share-slot video{
  position:absolute;inset:0;width:100%!important;height:100%!important;object-fit:contain}
.stage.lm-two.has-screen .grid{position:relative;inset:auto;order:1;
  width:auto;height:auto;min-width:0;min-height:0;padding:0;gap:8px;
  display:grid;flex-direction:initial}
body[data-orient="landscape"] .stage.lm-two.has-screen .grid{
  grid-template-columns:minmax(0,1fr);grid-template-rows:minmax(0,1fr) minmax(0,1fr)}
body[data-orient="portrait"] .stage.lm-two.has-screen .grid{
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);grid-template-rows:minmax(0,1fr)}
.stage.lm-two.has-screen .grid .tile{position:relative;inset:auto;left:auto!important;right:auto!important;
  top:auto!important;bottom:auto!important;width:100%!important;height:100%!important;
  min-width:0;min-height:0;flex:none;margin:0;aspect-ratio:auto}
.stage.lm-two.has-screen .grid .tile video,
.stage.lm-two.has-screen .grid .tile .video-slot{width:100%;height:100%;object-fit:contain}

/* ==========================================================================
   2026-11 最终版：大厂级设计系统（参照腾讯会议 / 飞书 / Google Meet）
   --------------------------------------------------------------------------
   原则：单一品牌色 · 实心表面 · 无渐变滥用 · 无玻璃拟态 · 无装饰动画
   本块为全站视觉的最终裁决层，此前各阶段的装饰规则以本块为准。
   ========================================================================== */

:root{
  --surf:rgba(255,255,255,.05);
  --line:rgba(255,255,255,.09);
  --panel-solid:#14181f;
  --stage-bg:#0b0d12;
}
body.light{
  --surf:rgba(15,23,42,.045);
  --line:rgba(15,23,42,.10);
  --panel-solid:#ffffff;
  --stage-bg:#eef1f5;
}

/* ---------- 0. 关闭全部装饰层与装饰动画 ---------- */
#joinScreen::before,#loginScreen::before,
#joinScreen::after,#loginScreen::after,
.join-card::before,.logo::after,
.preview-wrap::before,.preview-wrap::after,
.btn-primary::after,.wall-bg{display:none!important}
.logo,.ctl.on,.weather-pill,.banner,.tile{animation:none!important}

/* ---------- 1. 加入/登录页：干净实心背景 ---------- */
#joinScreen,#loginScreen{background:var(--bg)}
.join-card{background:var(--panel-solid);border:1px solid var(--line);border-radius:16px;
  box-shadow:0 12px 40px rgba(0,0,0,.35);
  backdrop-filter:none;-webkit-backdrop-filter:none}
body.light .join-card{box-shadow:0 12px 32px rgba(15,23,42,.10)}
.join-head{margin-bottom:16px}
.join-head h1{background:none;-webkit-background-clip:border-box;background-clip:border-box;
  -webkit-text-fill-color:var(--text);color:var(--text);
  font-size:22px;font-weight:600;letter-spacing:0}
.join-head .sub{color:var(--dim);letter-spacing:.2px}
.logo{color:var(--primary);filter:none}
.lastroom{background:var(--surf);border:1px solid var(--line);border-radius:10px}

/* ---------- 2. 按钮：实心单色 ---------- */
.btn{border-radius:10px}
.btn-primary{background:var(--primary);border:0;box-shadow:none;letter-spacing:.2px;
  transition:filter .15s,transform .1s}
.btn-primary:hover{filter:brightness(1.09);box-shadow:none}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{background:var(--surf);border:1px solid var(--line);box-shadow:none}
.btn-ghost:hover{background:var(--line)}

/* ---------- 3. 会议舞台与画面格 ---------- */
.stage{background:var(--stage-bg)}
.grid .tile{border-radius:12px;background:#000;border:1px solid var(--line);
  outline:none;box-shadow:none;overflow:hidden}
.grid .tile video{background:#000}
.tile:hover{border-color:rgba(255,255,255,.18)}
.tile.speaking{box-shadow:none;outline:2px solid var(--ok);outline-offset:-2px}
.tile-name{background:rgba(0,0,0,.55);backdrop-filter:none;-webkit-backdrop-filter:none;
  border-radius:6px;font-size:12px;padding:3px 8px;letter-spacing:.2px}
.tile-badge{background:rgba(0,0,0,.55);backdrop-filter:none;-webkit-backdrop-filter:none;border-radius:6px}
.grid .tile:fullscreen{border-radius:0;border:0}
.grid .tile:fullscreen video{object-fit:contain}
.tile.cam-off video{opacity:0!important}
.tile.cam-off .tile-avatar{display:flex!important}
/* 主讲/小窗：去掉主题色光晕，只留细描边 */
.grid.mode-speaker .tile.pip,.grid.lm-pip .tile.pip{border-color:rgba(255,255,255,.22);box-shadow:0 8px 24px rgba(0,0,0,.5)}

/* ---------- 4. 顶栏：半透明实心芯片（无模糊） ---------- */
.topbar{background:linear-gradient(180deg,rgba(5,7,10,.5),transparent);
  backdrop-filter:none;-webkit-backdrop-filter:none}
.banner,.wb-toolbar{backdrop-filter:none;-webkit-backdrop-filter:none}
.room-chip,.stat-chip{background:rgba(10,13,18,.66);border:1px solid var(--line);
  backdrop-filter:none;-webkit-backdrop-filter:none;border-radius:8px;
  font-family:inherit;letter-spacing:.2px;font-variant-numeric:tabular-nums;font-size:12px}
body.light .room-chip,body.light .stat-chip{background:rgba(255,255,255,.82);color:#141922}
.tb-btn{background:rgba(10,13,18,.66);border:1px solid var(--line);border-radius:9px;
  backdrop-filter:none;-webkit-backdrop-filter:none;transition:background .13s}
.tb-btn:hover{background:rgba(24,28,37,.92)}
body.light .tb-btn{background:rgba(255,255,255,.82);color:#141922}

/* ---------- 5. 控制坞：实心面板 ---------- */
footer.controls{background:var(--panel-solid);border:1px solid var(--line);border-radius:14px;
  backdrop-filter:none;-webkit-backdrop-filter:none;
  box-shadow:0 8px 24px rgba(0,0,0,.40)}
body.light footer.controls{background:var(--panel-solid);box-shadow:0 8px 24px rgba(15,23,42,.12)}
footer.controls .ctl{background:var(--surf);border:1px solid var(--line);border-radius:11px;
  transition:background .13s,border-color .13s,transform .1s}
footer.controls .ctl:hover{background:var(--line);border-color:rgba(255,255,255,.16);
  transform:none;box-shadow:none}
footer.controls .ctl:active{transform:scale(.94)}
footer.controls .ctl.on{background:var(--primary);border-color:transparent;color:#fff;box-shadow:none}
footer.controls .ctl.on i{color:rgba(255,255,255,.92)}
footer.controls .ctl.off{background:var(--danger2);border-color:var(--danger);color:#fff}
.ctl-danger{background:var(--danger);border:0;border-radius:11px;box-shadow:none;
  transition:filter .13s,transform .1s}
.ctl-danger:hover{filter:brightness(1.12)}
.ctl-danger:active{transform:scale(.94)}

/* ---------- 6. 面板 / 抽屉 / 浮窗 / 弹窗：实心 ---------- */
.float-win,.panel,.drawer,#morePanel,.more-box,.modal-box,.clock-win,.music-win{
  background:var(--panel-solid);
  backdrop-filter:none;-webkit-backdrop-filter:none;
  border:1px solid var(--line);border-radius:14px;
  box-shadow:0 16px 48px rgba(0,0,0,.45)}
body.light .float-win,body.light .panel,body.light .drawer,body.light #morePanel,
body.light .more-box,body.light .modal-box,body.light .clock-win,body.light .music-win{
  box-shadow:0 16px 40px rgba(15,23,42,.14)}
.drawer{border-radius:0;border:0;border-left:1px solid var(--line)}
.fw-head{background:transparent;border-bottom:1px solid var(--line)}
.float-win{border-color:var(--line);box-shadow:0 12px 36px rgba(0,0,0,.45)}

/* ---------- 7. 更多面板条目 ---------- */
.more-item{background:var(--surf);border:1px solid var(--line);border-radius:12px;
  transition:background .12s;box-shadow:none;transform:none}
.more-item:hover{background:var(--line);border-color:rgba(255,255,255,.14);
  transform:none;box-shadow:none}
.more-item.on{border-color:var(--primary);background:var(--primary-soft);box-shadow:none}
.mi-ico{background:var(--primary-soft);border-color:transparent}
.more-item:hover .mi-ico{box-shadow:none;background:var(--primary-soft)}

/* ---------- 8. Toast / 字幕 / 横幅 ---------- */
.toast{background:rgba(20,24,31,.95);border:1px solid var(--line);color:var(--text);
  backdrop-filter:none;-webkit-backdrop-filter:none;
  box-shadow:0 6px 20px rgba(0,0,0,.35);border-radius:10px;font-size:13px}
.caption-bar{background:rgba(0,0,0,.72);backdrop-filter:none;-webkit-backdrop-filter:none;border-radius:10px}

/* ---------- 9. 聊天浮窗（IM 级） ---------- */
.float-win-chat{border-radius:14px;overflow:hidden}
.chat-log{padding:14px 14px 6px;display:flex;flex-direction:column;gap:10px;
  scrollbar-width:thin;scrollbar-color:var(--line) transparent}
.chat-log::-webkit-scrollbar{width:6px}
.chat-log::-webkit-scrollbar-thumb{background:var(--line);border-radius:3px}
.msg .bubble{border-radius:4px 14px 14px 14px;background:var(--surf);border:1px solid var(--line);
  padding:8px 12px;font-size:13.5px;line-height:1.55;max-width:78%}
.msg.mine .bubble{border-radius:14px 4px 14px 14px;background:var(--primary);border-color:transparent;
  color:#fff;margin-left:auto}
.msg.sys .bubble{background:transparent;border:0;color:var(--dim);font-size:12px;
  text-align:center;margin:0 auto;padding:2px 8px}
.chat-new-btn{border-radius:999px;background:var(--primary);color:#fff;border:0;
  box-shadow:none;font-size:12px;padding:5px 12px}
.chat-form{border-top:1px solid var(--line);padding:10px 12px;gap:8px}
.chat-form textarea{border-radius:10px;background:var(--surf);border:1px solid var(--line);
  padding:8px 10px;font-size:13.5px;resize:none}
.chat-form textarea:focus{border-color:var(--primary);outline:none;box-shadow:none}
.chat-hint{font-size:11px;color:var(--dim);padding:0 14px 10px}

/* ---------- 10. 字体：移除外部 Orbitron，统一系统字体 + 表格数字 ---------- */
.room-chip,.stat-chip,.preview-stats,.cv-url,.diag,.ck-big,.ck-sub,.ck-peer b,
.weather-pill .wtemp,.ck-row input[type=time]{
  font-family:inherit;letter-spacing:.2px;font-variant-numeric:tabular-nums}
.ck-big{text-shadow:none;font-weight:700}

/* ---------- 11. 预览区 ---------- */
.preview-wrap{border-radius:12px}
#previewVideo{border-radius:12px}
.pv-btn{background:rgba(10,13,18,.66);border:1px solid var(--line);
  backdrop-filter:none;-webkit-backdrop-filter:none;transition:background .13s}
.pv-btn:hover{box-shadow:none;background:rgba(24,28,37,.92);transform:none}
.pv-btn.off{background:var(--danger2);border-color:var(--danger)}
.level-meter{background:var(--line)}
.level-meter i{background:var(--primary)}

/* ---------- 12. 天气胶囊：克制 ---------- */
.weather-pill{background:var(--surf);border:1px solid var(--line);box-shadow:none}
.weather-pill .wico{filter:none;color:var(--primary)}
.weather-pill .wtemp{color:var(--text);font-weight:600}

/* ---------- 13. 滚动条 / 选中 ---------- */
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:4px}
::-webkit-scrollbar-thumb:hover{background:rgba(255,255,255,.22)}
body.light ::-webkit-scrollbar-thumb{background:rgba(15,23,42,.18)}
::selection{background:color-mix(in srgb,var(--primary) 45%,transparent);color:#fff}

/* ---------- 14. 移动端：渲染减负（零模糊、零装饰阴影、零动画） ---------- */
@media (max-width:820px){
  *{backdrop-filter:none!important;-webkit-backdrop-filter:none!important}
  .grid .tile{box-shadow:none;border-radius:10px}
  .float-win,.panel,#morePanel{box-shadow:0 8px 24px rgba(0,0,0,.35)}
  .join-card{box-shadow:0 8px 28px rgba(0,0,0,.30)}
  footer.controls{box-shadow:0 4px 16px rgba(0,0,0,.30)}
  .btn,.ctl,.ctl-danger,.tb-btn,.more-item{transition:none}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
}

/* ==========================================================================
   2026-11-04 · v3 全站精致化打磨（纯视觉层）
   原则：不改任何布局尺寸/定位/画面比例；只统一色彩层次、字阶、圆角、
   间距节奏、交互反馈与状态表达。
   ========================================================================== */

/* ---------- A. 色阶与描边：降低对比、拉开层次 ---------- */
:root{
  --ink-0:#0d1015;   /* 舞台底 */
  --ink-1:#13161c;   /* 卡片 */
  --ink-2:#191c23;   /* 控件 */
  --ink-3:#21252d;   /* 悬停 */
  --line-1:rgba(255,255,255,.065);
  --line-2:rgba(255,255,255,.11);
  --line-3:rgba(255,255,255,.18);
  --brand:#2f6bff;
  --brand-hi:#4b82ff;
  --brand-lo:#2358d8;
  --red:#e5484d;
  --txt-1:#f2f4f8;
  --txt-2:#a4adbd;
  --txt-3:#737d8f;
}
body{
  font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text","PingFang SC","HarmonyOS Sans SC","Segoe UI","Microsoft YaHei",sans-serif;
  font-feature-settings:"tnum" 1,"ss01" 1;
  letter-spacing:0;
  background:var(--ink-0);
}
body.light{
  --ink-0:#f4f6fa; --ink-1:#ffffff; --ink-2:#ffffff; --ink-3:#f1f3f8;
  --line-1:rgba(15,23,42,.07); --line-2:rgba(15,23,42,.12); --line-3:rgba(15,23,42,.20);
  --txt-1:#11151c; --txt-2:#5a6478; --txt-3:#8b94a7;
  background:var(--ink-0);
}

/* ---------- B. 入会 / 登录 ---------- */
#joinScreen,#loginScreen{
  background:
    radial-gradient(1000px 520px at 50% -12%,rgba(47,107,255,.10),transparent 68%),
    var(--ink-0);
}
.join-card{
  background:var(--ink-1);
  border:1px solid var(--line-2);
  border-radius:16px;
  padding:24px;
  backdrop-filter:none;-webkit-backdrop-filter:none;
  box-shadow:0 20px 56px rgba(0,0,0,.46);
}
body.light .join-card{box-shadow:0 12px 32px rgba(15,23,42,.10)}
.join-head{margin-bottom:20px}
.join-head h1{margin:8px 0 6px;font-size:22px;font-weight:700;letter-spacing:-.02em;line-height:1.25}
.join-head .sub{margin:0;color:var(--txt-2);font-size:13px;letter-spacing:.01em}
.logo{font-size:28px;color:var(--brand);filter:none}
.preview-wrap{border-radius:12px;border:1px solid var(--line-2);background:#05070a}
.preview-ph{color:var(--txt-2);font-size:13px;line-height:1.75}
.pv-btn{width:46px;height:46px;border-radius:12px;background:rgba(12,14,19,.82);
  border:1px solid var(--line-2);font-size:18px;backdrop-filter:none;-webkit-backdrop-filter:none;
  transition:background .14s,border-color .14s,transform .1s}
.pv-btn:hover{background:rgba(28,32,41,.94);border-color:var(--line-3)}
.pv-btn:active{transform:scale(.95)}
.pv-btn.off{background:rgba(229,72,77,.16);border-color:rgba(229,72,77,.45);color:#ff8b8f}
.mini-btn{background:var(--ink-2);border:1px solid var(--line-2);border-radius:8px;
  padding:6px 11px;font-size:11.5px;color:var(--txt-2);transition:color .14s,border-color .14s,background .14s}
.mini-btn:hover{color:var(--txt-1);border-color:var(--line-3);background:var(--ink-3)}

/* ---------- C. 表单控件 ---------- */
.field{margin-bottom:14px;gap:7px}
.field>span{font-size:12px;color:var(--txt-2);letter-spacing:.02em;font-weight:500}
input[type=text],input[type=password],input[type=number],select,textarea{
  background:var(--ink-2);border:1px solid var(--line-2);border-radius:9px;
  padding:11px 13px;font-size:14.5px;line-height:1.4;color:var(--txt-1);
  transition:border-color .14s,box-shadow .14s,background .14s;
}
input::placeholder,textarea::placeholder{color:var(--txt-3)}
input:hover,select:hover,textarea:hover{background:var(--ink-3)}
input:focus,select:focus,textarea:focus{
  border-color:var(--brand);background:var(--ink-2);
  box-shadow:0 0 0 3px rgba(47,107,255,.16);
}
body.light input,body.light select,body.light textarea{background:#fff;border-color:var(--line-2)}
body.light input:hover,body.light select:hover,body.light textarea:hover{background:#fff;border-color:var(--line-3)}

/* ---------- D. 按钮 ---------- */
.btn{height:40px;padding:0 18px;border-radius:9px;font-size:14px;font-weight:600;
  letter-spacing:.01em;transition:background .14s,filter .14s,transform .1s,border-color .14s}
.btn:active{transform:scale(.985)}
.btn-primary{background:var(--brand);color:#fff;box-shadow:none}
.btn-primary:hover{background:var(--brand-hi);filter:none}
.btn-primary:active{background:var(--brand-lo)}
.btn-ghost{background:var(--ink-2);border:1px solid var(--line-2);color:var(--txt-1)}
.btn-ghost:hover{background:var(--ink-3);border-color:var(--line-3)}
.btn-danger{background:var(--red);color:#fff}
.btn-danger:hover{background:#f05a5f;filter:none}
.btn-lg{height:48px;font-size:15px;font-weight:600}
.btn-sm{height:32px;padding:0 13px;font-size:12.5px;border-radius:8px}
.btn:disabled{opacity:.42;cursor:not-allowed;filter:none}
.hint{font-size:12px;letter-spacing:.01em;margin-bottom:9px}

/* ---------- E. 会议舞台 ---------- */
.stage{background:#05070a}
footer.controls{
  background:var(--ink-1);
  border:1px solid var(--line-1);
  border-radius:16px;
  box-shadow:0 10px 30px rgba(0,0,0,.42);
}
footer.controls .ctl{
  background:var(--ink-2);border:1px solid var(--line-1);border-radius:12px;
  min-width:62px;padding:9px 10px;gap:5px;
  transition:background .13s,border-color .13s,color .13s,transform .1s;
}
footer.controls .ctl:hover{background:var(--ink-3);border-color:var(--line-2)}
footer.controls .ctl:active{transform:scale(.96)}
footer.controls .ctl .ico{width:20px;height:20px}
footer.controls .ctl i{font-size:10.5px;color:var(--txt-3);letter-spacing:.02em;font-weight:500}
footer.controls .ctl.on{background:var(--brand);border-color:transparent;color:#fff}
footer.controls .ctl.on:hover{background:var(--brand-hi)}
footer.controls .ctl.on i{color:rgba(255,255,255,.9)}
/* 关闭态：柔和红底 + 红图标（比满血红更克制、更高级） */
footer.controls .ctl.off{
  background:rgba(229,72,77,.14);border-color:rgba(229,72,77,.34);color:#ff9296;
}
footer.controls .ctl.off:hover{background:rgba(229,72,77,.22);border-color:rgba(229,72,77,.48)}
footer.controls .ctl.off i{color:rgba(255,146,150,.92)}
.ctl-danger{
  background:var(--red);border:1px solid transparent;border-radius:12px;
  min-width:62px;padding:9px 10px;gap:5px;color:#fff;
  transition:background .13s,transform .1s;
}
.ctl-danger:hover{background:#f05a5f;filter:none}
.ctl-danger:active{transform:scale(.96)}
.ctl-danger i{font-size:10.5px;color:rgba(255,255,255,.9);letter-spacing:.02em;font-weight:500}

/* ---------- F. 顶栏 ---------- */
.topbar{padding:calc(10px + var(--safe-t)) 14px 10px;
  background:linear-gradient(180deg,rgba(4,6,9,.52) 0%,rgba(4,6,9,.18) 55%,transparent 100%)}
.room-chip,.stat-chip{
  height:30px;display:inline-flex;align-items:center;gap:6px;padding:0 11px;
  border-radius:9px;border:1px solid var(--line-1);
  background:rgba(12,15,20,.72);color:#fff;
  font-size:12px;font-weight:500;letter-spacing:.01em;
  backdrop-filter:none;-webkit-backdrop-filter:none;
}
.stat-chip.good{background:rgba(23,160,88,.92);border-color:transparent}
.stat-chip.bad{background:rgba(229,72,77,.92);border-color:transparent}
.stat-chip.rec{background:rgba(229,72,77,.94);border-color:transparent}
.tb-btn{width:38px;height:38px;border-radius:10px;border:1px solid var(--line-1);
  background:rgba(12,15,20,.72);transition:background .13s,border-color .13s}
.tb-btn:hover{background:rgba(30,34,43,.92);border-color:var(--line-2)}
.tb-btn:active{transform:scale(.95)}

/* ---------- G. 面板 / 抽屉 / 浮窗 ---------- */
.panel,.drawer,.float-win,.more-box,.modal-box{
  background:var(--ink-1);border:1px solid var(--line-2);border-radius:14px;
  box-shadow:0 20px 56px rgba(0,0,0,.5);backdrop-filter:none;-webkit-backdrop-filter:none;
}
body.light .panel,body.light .drawer,body.light .float-win,body.light .more-box,body.light .modal-box{
  box-shadow:0 14px 40px rgba(15,23,42,.14);
}
.panel{padding:13px;min-width:240px}
.panel h3{font-size:13.5px;font-weight:600;letter-spacing:-.01em;margin-bottom:10px}
.stat-row{font-size:12.5px;padding:6px 0;border-bottom:1px solid var(--line-1)}
.stat-row:last-child{border-bottom:0}
.drawer-tabs{border-bottom:1px solid var(--line-1)}
.dtab{height:48px;padding:0 15px;font-size:13px;font-weight:500;letter-spacing:.01em;
  border-bottom:2px solid transparent;transition:color .13s}
.dtab:hover{color:var(--txt-2)}
.dtab.active{color:var(--txt-1);border-bottom-color:var(--brand);font-weight:600}
.drawer-close{width:38px;height:38px;margin:5px 6px;border-radius:9px;font-size:20px;line-height:1;
  transition:background .13s,color .13s}
.drawer-close:hover{background:var(--ink-2);color:var(--txt-1)}

/* ---------- H. 聊天 ---------- */
.chat-log{gap:12px;padding:4px 6px 4px 2px}
.msg .who{font-size:11px;color:var(--txt-3);letter-spacing:.01em}
.msg .bubble{
  background:var(--ink-3);color:var(--txt-1);
  border-radius:12px;padding:8px 12px;font-size:13.5px;line-height:1.55;
  box-shadow:none;
}
.msg.mine .bubble{background:var(--brand);color:#fff;border-radius:12px 12px 3px 12px}
.msg.sys .bubble{color:var(--txt-3);font-size:11.5px;letter-spacing:.02em}
.chat-form{gap:8px}
.chat-form textarea{min-height:38px;padding:9px 12px;border-radius:10px}
.chat-form textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(47,107,255,.16)}
*::-webkit-scrollbar{width:6px;height:6px}
*::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:3px}
*::-webkit-scrollbar-thumb:hover{background:rgba(255,255,255,.2)}
body.light *::-webkit-scrollbar-thumb{background:rgba(15,23,42,.14)}

/* ---------- I. 更多面板 ---------- */
.more-box{padding:20px;border-radius:16px;max-width:500px}
.more-box h4{font-size:15px;font-weight:700;letter-spacing:-.01em;margin-bottom:16px}
.more-grid{gap:9px;margin-bottom:16px}
.more-item{
  background:var(--ink-2);border:1px solid var(--line-1);border-radius:11px;padding:14px;
  transition:background .13s,border-color .13s,transform .1s;
}
.more-item:hover{background:var(--ink-3);border-color:var(--line-2);transform:translateY(-1px)}
.more-item:active{transform:translateY(0) scale(.99)}
.more-item b{font-size:13.5px;font-weight:600;letter-spacing:-.01em;margin-bottom:3px}
.more-item small{color:var(--txt-3);font-size:11.5px}

/* ---------- J. 成员 / 列表 ---------- */
.member{padding:9px 10px;border-radius:10px;transition:background .13s}
.member .avatar{width:34px;height:34px;border-radius:10px;background:var(--ink-3);
  border:1px solid var(--line-1);font-size:12.5px;font-weight:600;color:var(--txt-1)}
.member .meta b{font-size:13px;font-weight:600;letter-spacing:-.005em}
.member .meta small{font-size:11px;color:var(--txt-3)}
.fr-row{background:var(--ink-2);border:1px solid var(--line-1);border-radius:10px;padding:8px 11px}
.fr-dot.on{background:#17a058;box-shadow:0 0 0 2px rgba(23,160,88,.18)}
.switch-row{border-bottom:1px solid var(--line-1);font-size:13px}
.share-item{border:1px solid var(--line-1);border-radius:10px}
.share-item:hover,.share-item.active{border-color:rgba(47,107,255,.5);background:var(--ink-2)}

/* ---------- K. 白板 / 内容查看器 ---------- */
.wb-tool,.wb-btn{width:38px;height:38px;border-radius:9px;background:var(--ink-2);
  border:1px solid var(--line-1);transition:background .13s,border-color .13s}
.wb-tool:hover,.wb-btn:hover{background:var(--ink-3);border-color:var(--line-2)}
.wb-tool.active{background:var(--brand);border-color:transparent}
.wb-tab{border-radius:8px;border:1px solid var(--line-1);background:var(--ink-2);font-size:12.5px}
.wb-tab.active{background:var(--brand);border-color:transparent}
.cv-bar,.wb-toolbar{background:var(--ink-1);border-bottom:1px solid var(--line-1);
  backdrop-filter:none;-webkit-backdrop-filter:none}

/* ---------- L. 弹窗 / 提示 ---------- */
.modal{background:rgba(4,6,9,.72)}
.modal-box{padding:22px;border-radius:15px}
.modal-box h4{font-size:15px;font-weight:700;letter-spacing:-.01em;margin-bottom:12px}
.modal-actions{margin-top:18px;gap:9px}
.toast{background:rgba(20,23,29,.96);border:1px solid var(--line-2);color:var(--txt-1);
  padding:11px 18px;border-radius:10px;font-size:13px;font-weight:500;
  box-shadow:0 10px 30px rgba(0,0,0,.45)}
.banner{background:#b0343a;box-shadow:0 8px 24px rgba(0,0,0,.4)}
.banner.warn{background:#b45309}
.banner.info{background:#2358d8}
.banner.ok{background:#12855a}

/* ---------- M. 统一焦点环 / 无障碍 ---------- */
:where(button,a,input,select,textarea,[tabindex]):focus-visible{
  outline:2px solid rgba(47,107,255,.55);outline-offset:2px;
}
/* ---------- N. 移动端：保持零模糊零重绘 ---------- */
@media (max-width:820px){
  .join-card{border-radius:14px;padding:18px;box-shadow:0 10px 32px rgba(0,0,0,.34)}
  .join-head h1{font-size:20px}
  footer.controls{border-radius:14px;box-shadow:0 6px 20px rgba(0,0,0,.34)}
  footer.controls .ctl{min-width:56px;padding:8px 8px;border-radius:11px}
  footer.controls .ctl .ico{width:19px;height:19px}
  footer.controls .ctl i{font-size:10px}
  .ctl-danger{min-width:56px;padding:8px 8px;border-radius:11px}
  .panel,.drawer,.float-win,.more-box,.modal-box,.join-card{backdrop-filter:none!important;-webkit-backdrop-filter:none!important}
}
@media (max-width:390px){
  footer.controls .ctl i,.ctl-danger i{display:none}
  footer.controls .ctl,footer.controls .ctl-danger{min-width:44px;height:44px;padding:0;border-radius:11px}
  footer.controls .ctl .ico,.ctl-danger .ico{width:22px;height:22px}
}

/* ---------- O. 控制栏按钮内容严格居中 ---------- */
footer.controls .ctl,
footer.controls .ctl-danger{
  justify-content:center!important;
  align-items:center!important;
  text-align:center;
}
footer.controls .ctl .ico,
footer.controls .ctl-danger .ico{
  display:block;
  margin:0 auto;
  flex:none;
  align-self:center;
}
footer.controls .ctl i,
footer.controls .ctl-danger i{
  display:block;
  width:100%;
  text-align:center;
  line-height:1;
  align-self:center;
}
footer.controls .ctl > *,
footer.controls .ctl-danger > *{
  flex:none;
}


/* ==========================================================================
   2026-11-07 · R2 全站美学重塑（Awwwards / Apple 级视觉层）
   --------------------------------------------------------------------------
   纯视觉追加层：不改任何布局尺寸、定位、DOM 结构与 JS 行为。
   原则：深空极光氛围 · 渐变描边卡片 · 玻璃控制坞 · 丝滑微动效。
   移动端沿用既有「零模糊零重绘」性能规则（max-width:820px 的
   backdrop-filter:none!important 仍然生效），本层不破坏性能约束。
   品牌色仍由 theme.js / 管理后台 --primary 接管，本层用 color-mix
   派生邻近色，换品牌色时全部自动跟随。
   ========================================================================== */

/* ---------- R2-0. 派生色板（跟随 --primary 自动变化） ---------- */
:root{
  --r2-acc:color-mix(in oklab,var(--primary) 55%,#a855f7);      /* 邻近紫 */
  --r2-acc2:color-mix(in oklab,var(--primary) 45%,#22d3ee);     /* 邻近青 */
  --r2-ink0:#07090f;   /* 更深的舞台底 */
  --r2-ink1:rgba(17,21,29,.86);
  --r2-line:rgba(255,255,255,.10);
  --r2-line-hi:rgba(255,255,255,.22);
  --r2-ease:cubic-bezier(.22,1,.36,1);
  --r2-spring:cubic-bezier(.34,1.4,.44,1);
}
body.light{
  --r2-ink0:#eef1f8;
  --r2-ink1:rgba(255,255,255,.92);
  --r2-line:rgba(15,23,42,.10);
  --r2-line-hi:rgba(15,23,42,.22);
}

/* ---------- R2-1. 氛围背景：深空极光（仅加入/登录屏，纯 CSS 慢漂移） ---------- */
#joinScreen,#loginScreen{position:relative;overflow:hidden;background:var(--r2-ink0)}
#joinScreen::before,#loginScreen::before{
  content:"";display:block!important;position:absolute;inset:-20%;z-index:0;pointer-events:none;
  background:
    radial-gradient(38% 30% at 24% 18%,color-mix(in srgb,var(--primary) 26%,transparent),transparent 70%),
    radial-gradient(34% 28% at 78% 26%,color-mix(in srgb,var(--r2-acc) 22%,transparent),transparent 70%),
    radial-gradient(42% 34% at 55% 88%,color-mix(in srgb,var(--r2-acc2) 16%,transparent),transparent 72%);
  filter:blur(28px);opacity:.9;
  animation:r2Aurora 16s ease-in-out infinite alternate!important;
}
body.light #joinScreen::before,body.light #loginScreen::before{opacity:.5;filter:blur(36px)}
@keyframes r2Aurora{
  0%{transform:translate3d(-2.5%,-1.5%,0) scale(1) rotate(0deg)}
  50%{transform:translate3d(2%,1.5%,0) scale(1.06) rotate(2deg)}
  100%{transform:translate3d(-1%,2.5%,0) scale(1.03) rotate(-2deg)}
}
/* 顶部一线高光，拉开空间纵深 */
#joinScreen::after,#loginScreen::after{
  content:"";display:block!important;position:absolute;left:0;right:0;top:0;height:1px;z-index:1;
  background:linear-gradient(90deg,transparent,color-mix(in srgb,var(--primary) 55%,#fff 10%),transparent);
  opacity:.5;pointer-events:none;
}
#joinScreen .join-card,#loginScreen .join-card{position:relative;z-index:2}

/* ---------- R2-2. 卡片：渐变描边 + 环境投影 ---------- */
.join-card{
  border:1px solid transparent!important;
  background:
    linear-gradient(165deg,rgba(22,26,36,.96),rgba(13,16,23,.96)) padding-box,
    linear-gradient(150deg,rgba(255,255,255,.16),rgba(255,255,255,.05) 34%,
      color-mix(in srgb,var(--primary) 30%,transparent) 78%,rgba(255,255,255,.03)) border-box!important;
  border-radius:22px;
  box-shadow:
    0 30px 80px -20px rgba(0,0,0,.65),
    0 0 0 1px rgba(0,0,0,.2),
    0 0 90px -30px color-mix(in srgb,var(--primary) 45%,transparent);
}
body.light .join-card{
  background:
    linear-gradient(#fff,#fbfcfe) padding-box,
    linear-gradient(150deg,rgba(15,23,42,.14),rgba(15,23,42,.05) 40%,
      color-mix(in srgb,var(--primary) 35%,transparent)) border-box!important;
  box-shadow:0 24px 60px -18px rgba(15,23,42,.22);
}
.join-card{animation:r2CardIn .55s var(--r2-ease) both!important}
@keyframes r2CardIn{from{opacity:0;transform:translateY(14px) scale(.985)}to{opacity:1;transform:none}}

/* ---------- R2-3. 品牌区：渐变标题 + 呼吸徽标 ---------- */
.logo{
  font-size:34px;line-height:1;display:inline-block;
  background:linear-gradient(135deg,var(--r2-acc2),var(--primary) 55%,var(--r2-acc));
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
  filter:drop-shadow(0 0 16px color-mix(in srgb,var(--primary) 55%,transparent));
  animation:r2LogoBreath 4s ease-in-out infinite!important;
}
@keyframes r2LogoBreath{
  0%,100%{filter:drop-shadow(0 0 10px color-mix(in srgb,var(--primary) 40%,transparent))}
  50%{filter:drop-shadow(0 0 22px color-mix(in srgb,var(--primary) 70%,transparent))}
}
.join-head h1{
  font-size:25px;font-weight:750;letter-spacing:-.03em;
  background:linear-gradient(180deg,#fff 20%,rgba(176,192,235,.82));
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
body.light .join-head h1{
  background:linear-gradient(180deg,#0f1522 30%,rgba(47,64,105,.9));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.join-head .sub{color:var(--txt-2,#a4adbd);font-size:13px;letter-spacing:.02em}
.mini-btn{
  background:rgba(255,255,255,.05);border:1px solid var(--r2-line);border-radius:999px;
  color:var(--txt-2,#a4adbd);transition:all .18s var(--r2-ease);
}
.mini-btn:hover{color:var(--txt-1,#f2f4f8);border-color:var(--r2-line-hi);
  background:rgba(255,255,255,.09);transform:translateY(-1px)}
body.light .mini-btn{background:rgba(15,23,42,.05);color:#5a6478}

/* ---------- R2-4. 表单：悬浮式输入 ---------- */
.field>span{font-size:11.5px;letter-spacing:.06em;font-weight:600;color:var(--txt-3,#737d8f)}
input[type=text],input[type=password],input[type=number],select,textarea{
  background:rgba(255,255,255,.045);border:1px solid var(--r2-line);border-radius:11px;
  transition:border-color .18s var(--r2-ease),box-shadow .18s var(--r2-ease),background .18s;
}
input:hover,select:hover,textarea:hover{background:rgba(255,255,255,.07)}
input:focus,select:focus,textarea:focus{
  border-color:color-mix(in srgb,var(--primary) 75%,#fff 10%);
  background:rgba(255,255,255,.06);
  box-shadow:0 0 0 3.5px color-mix(in srgb,var(--primary) 22%,transparent),
    0 0 22px -6px color-mix(in srgb,var(--primary) 55%,transparent);
}
body.light input,body.light select,body.light textarea{background:#fff}

/* ---------- R2-5. 按钮：主按钮渐变 + 微浮起 ---------- */
.btn{border-radius:11px;transition:transform .16s var(--r2-ease),box-shadow .2s var(--r2-ease),
  filter .16s,background .16s,border-color .16s}
.btn-primary{
  background:linear-gradient(160deg,
    color-mix(in oklab,var(--primary) 82%,#fff 18%) 0%,
    var(--primary) 46%,
    color-mix(in oklab,var(--primary) 72%,var(--r2-acc)) 100%);
  box-shadow:0 8px 24px -8px color-mix(in srgb,var(--primary) 65%,transparent),
    inset 0 1px 0 rgba(255,255,255,.22);
  text-shadow:0 1px 2px rgba(0,0,0,.18);
}
.btn-primary:hover{
  transform:translateY(-1.5px);filter:brightness(1.06);
  box-shadow:0 14px 34px -10px color-mix(in srgb,var(--primary) 75%,transparent),
    inset 0 1px 0 rgba(255,255,255,.28);
}
.btn-primary:active{transform:translateY(0) scale(.985)}
.btn-ghost{
  background:rgba(255,255,255,.045);border:1px solid var(--r2-line);
}
.btn-ghost:hover{background:rgba(255,255,255,.09);border-color:var(--r2-line-hi);
  transform:translateY(-1px)}
.btn-danger{box-shadow:0 8px 24px -8px rgba(229,72,77,.5)}
.lastroom{
  background:color-mix(in srgb,var(--primary) 10%,transparent);
  border:1px solid color-mix(in srgb,var(--primary) 32%,transparent);border-radius:11px;
}

/* ---------- R2-6. 预览区：影院级取景框 ---------- */
.preview-wrap{
  border-radius:16px;border:1px solid var(--r2-line);
  background:radial-gradient(120% 100% at 50% 0%,#0b0f18 0%,#05070a 70%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.05),0 18px 44px -18px rgba(0,0,0,.6);
}
.preview-ph{background:transparent;color:var(--txt-2,#a4adbd)}
.pv-btn{
  border-radius:50%;background:rgba(10,13,19,.55);border:1px solid rgba(255,255,255,.16);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  transition:transform .18s var(--r2-spring),background .15s,border-color .15s,box-shadow .2s;
}
.pv-btn:hover{background:rgba(20,25,34,.75);transform:scale(1.08);
  box-shadow:0 6px 18px rgba(0,0,0,.4)}
.pv-btn:active{transform:scale(.96)}
.pv-btn.off{background:rgba(229,72,77,.82);border-color:rgba(229,72,77,.9);color:#fff}
.level-meter{height:4px;border-radius:99px;background:rgba(255,255,255,.14)}
.level-meter i{background:linear-gradient(90deg,var(--ok),#86efac);border-radius:99px}
.preview-stats{border-radius:999px;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}

/* ---------- R2-7. 会议舞台：深色纵深 + 画面格质感 ---------- */
.stage{background:
  radial-gradient(120% 90% at 50% -10%,#0c1019 0%,var(--r2-ink0) 55%)}
.grid .tile{
  border-radius:15px;border:1px solid rgba(255,255,255,.075);
  background:#04060a;
  box-shadow:0 14px 36px -12px rgba(0,0,0,.55),inset 0 1px 0 rgba(255,255,255,.04);
  animation:r2TileIn .38s var(--r2-ease) both!important;
  transition:border-color .22s var(--r2-ease),box-shadow .25s var(--r2-ease);
}
@keyframes r2TileIn{from{opacity:0;transform:scale(.955)}to{opacity:1;transform:scale(1)}}
.grid .tile:hover{border-color:rgba(255,255,255,.16)}
.tile.speaking{
  outline:2px solid color-mix(in srgb,var(--ok) 88%,#fff 6%);outline-offset:-2px;
  box-shadow:0 0 0 4px color-mix(in srgb,var(--ok) 18%,transparent),
    0 0 28px -4px color-mix(in srgb,var(--ok) 40%,transparent);
}
.tile.local{border-color:color-mix(in srgb,var(--primary) 45%,transparent)}
.tile-name{
  background:rgba(8,10,15,.55);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  border:1px solid rgba(255,255,255,.08);border-radius:8px;
  font-size:11.5px;letter-spacing:.02em;padding:4px 10px;
}
.tile-badge{border-radius:7px;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
.grid.mode-speaker .tile.pip,.grid.lm-pip .tile.pip{
  border-color:color-mix(in srgb,var(--primary) 40%,rgba(255,255,255,.15));
  box-shadow:0 16px 40px -8px rgba(0,0,0,.6),
    0 0 24px -6px color-mix(in srgb,var(--primary) 35%,transparent);
}

/* ---------- R2-8. 悬浮控制坞：玻璃胶囊 ---------- */
footer.controls{
  background:rgba(15,18,26,.66);
  backdrop-filter:blur(22px) saturate(1.5);-webkit-backdrop-filter:blur(22px) saturate(1.5);
  border:1px solid rgba(255,255,255,.10);border-radius:20px;
  box-shadow:0 20px 50px -12px rgba(0,0,0,.6),inset 0 1px 0 rgba(255,255,255,.07);
  padding:9px 12px;
}
body.light footer.controls{background:rgba(255,255,255,.78)}
footer.controls .ctl{
  background:transparent;border:1px solid transparent;border-radius:14px;
  color:#cdd5e4;
  transition:transform .18s var(--r2-spring),background .16s,border-color .16s,
    color .16s,box-shadow .25s;
}
body.light footer.controls .ctl{color:#3c465e}
footer.controls .ctl:hover{
  background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.10);
  transform:translateY(-2.5px);color:#fff;
}
body.light footer.controls .ctl:hover{background:rgba(15,23,42,.06);color:#11151c}
footer.controls .ctl:active{transform:scale(.93)}
footer.controls .ctl i{transition:color .16s}
footer.controls .ctl.on{
  background:linear-gradient(165deg,
    color-mix(in oklab,var(--primary) 85%,#fff 15%),var(--primary) 55%,
    color-mix(in oklab,var(--primary) 70%,var(--r2-acc)));
  border-color:transparent;color:#fff;
  box-shadow:0 8px 22px -6px color-mix(in srgb,var(--primary) 70%,transparent),
    inset 0 1px 0 rgba(255,255,255,.25);
}
footer.controls .ctl.off{
  background:rgba(229,72,77,.15);border-color:rgba(229,72,77,.35);color:#ff9296;
}
footer.controls .ctl.off:hover{background:rgba(229,72,77,.24);color:#ffb1b4}
.ctl-danger{
  background:linear-gradient(160deg,#f2595e,#dc2626 60%,#b91c1c);
  border-radius:14px;border:0;
  box-shadow:0 10px 26px -8px rgba(220,38,38,.65),inset 0 1px 0 rgba(255,255,255,.22);
  transition:transform .18s var(--r2-spring),filter .16s,box-shadow .2s;
}
.ctl-danger:hover{filter:brightness(1.1);transform:translateY(-2.5px)}
.ctl-danger:active{transform:scale(.93)}
.badge{box-shadow:0 0 0 2px rgba(15,18,26,.9)}

/* ---------- R2-9. 顶栏：玻璃芯片 ---------- */
.room-chip,.stat-chip{
  background:rgba(10,13,19,.5);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border:1px solid rgba(255,255,255,.09);border-radius:999px;
  font-weight:550;
}
.tb-btn{
  background:rgba(10,13,19,.5);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border:1px solid rgba(255,255,255,.09);border-radius:11px;
  transition:transform .18s var(--r2-spring),background .15s,border-color .15s;
}
.tb-btn:hover{background:rgba(24,29,39,.8);border-color:rgba(255,255,255,.2);transform:translateY(-1.5px)}
.tb-btn:active{transform:scale(.92)}

/* ---------- R2-10. 面板 / 抽屉 / 浮窗：玻璃拟态（桌面端） ---------- */
.panel,.float-win,.more-box,.modal-box{
  background:rgba(17,21,29,.72);
  backdrop-filter:blur(24px) saturate(1.5);-webkit-backdrop-filter:blur(24px) saturate(1.5);
  border:1px solid rgba(255,255,255,.10);border-radius:16px;
  box-shadow:0 24px 64px -12px rgba(0,0,0,.6),inset 0 1px 0 rgba(255,255,255,.06);
}
body.light .panel,body.light .float-win,body.light .more-box,body.light .modal-box{
  background:rgba(255,255,255,.86);
}
.drawer{
  background:rgba(15,18,26,.82);
  backdrop-filter:blur(24px) saturate(1.5);-webkit-backdrop-filter:blur(24px) saturate(1.5);
  border-left:1px solid rgba(255,255,255,.09);
}
.panel,.modal-box,.more-box,.float-win{animation:r2PanelIn .3s var(--r2-spring) both!important}
@keyframes r2PanelIn{from{opacity:0;transform:translateY(10px) scale(.97)}to{opacity:1;transform:none}}
.drawer{animation:r2DrawerIn .32s var(--r2-ease) both}
@keyframes r2DrawerIn{from{opacity:0;transform:translateX(24px)}to{opacity:1;transform:none}}
.fw-head{border-bottom:1px solid rgba(255,255,255,.07)}
.dtab{transition:color .15s,border-color .2s}
.dtab.active{border-bottom-color:var(--primary)}

/* ---------- R2-11. 聊天：气泡渐变 ---------- */
.msg .bubble{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.07);
  border-radius:4px 15px 15px 15px;
}
.msg.mine .bubble{
  background:linear-gradient(150deg,
    color-mix(in oklab,var(--primary) 85%,#fff 15%),
    var(--primary) 55%,color-mix(in oklab,var(--primary) 72%,var(--r2-acc)));
  border-color:transparent;border-radius:15px 4px 15px 15px;
  box-shadow:0 6px 18px -6px color-mix(in srgb,var(--primary) 55%,transparent);
}
.chat-form textarea{background:rgba(255,255,255,.05);border-radius:11px}
.chat-new-btn{
  background:linear-gradient(150deg,color-mix(in oklab,var(--primary) 85%,#fff 15%),var(--primary));
  box-shadow:0 8px 20px -6px color-mix(in srgb,var(--primary) 65%,transparent);
}

/* ---------- R2-12. 更多面板 / 成员 / 列表 ---------- */
.more-item{
  background:rgba(255,255,255,.04);border:1px solid var(--r2-line);border-radius:13px;
  transition:transform .18s var(--r2-spring),background .16s,border-color .16s,box-shadow .2s;
}
.more-item:hover{
  background:rgba(255,255,255,.08);border-color:var(--r2-line-hi);
  transform:translateY(-2px);
  box-shadow:0 10px 24px -8px rgba(0,0,0,.45);
}
.mi-ico{
  background:color-mix(in srgb,var(--primary) 14%,transparent);
  border:1px solid color-mix(in srgb,var(--primary) 26%,transparent);border-radius:10px;
}
.member{border-radius:11px}
.member .avatar{
  background:linear-gradient(135deg,
    color-mix(in oklab,var(--primary) 80%,#fff 10%),
    color-mix(in oklab,var(--primary) 60%,var(--r2-acc)));
  border:0;border-radius:11px;
}
.fr-row{background:rgba(255,255,255,.045);border:1px solid var(--r2-line);border-radius:11px}
.fr-dot.on{background:#34d399;box-shadow:0 0 8px rgba(52,211,153,.7)}
.share-item{border-radius:11px}

/* ---------- R2-13. 白板 / 查看器 / 字幕 / Toast ---------- */
.wb-tool,.wb-btn{border-radius:10px;transition:transform .16s var(--r2-spring),background .15s,border-color .15s}
.wb-tool:hover,.wb-btn:hover{transform:translateY(-1.5px)}
.wb-tool.active{background:var(--primary);box-shadow:0 4px 14px -2px color-mix(in srgb,var(--primary) 60%,transparent)}
.wb-tab{border-radius:999px}
.wb-tab.active{background:var(--primary)}
.wb-color.active{box-shadow:0 0 0 3px color-mix(in srgb,var(--primary) 40%,transparent)}
.caption-bar{
  background:rgba(8,10,15,.62);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border:1px solid rgba(255,255,255,.08);border-radius:13px;
}
.toast{
  background:rgba(14,17,24,.82);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.12);border-radius:999px;
  box-shadow:0 12px 32px rgba(0,0,0,.5);
  animation:r2ToastIn .35s var(--r2-spring) both;
}
@keyframes r2ToastIn{from{opacity:0;transform:translateX(-50%) translateY(12px) scale(.94)}
  to{opacity:1;transform:translateX(-50%)}}
.weather-pill{
  background:rgba(255,255,255,.05);border:1px solid var(--r2-line);
  animation:wPillIn .7s var(--r2-ease) both!important;
}
.weather-pill .wtemp{color:var(--primary)}

/* ---------- R2-14. 等候室 / 微调 ---------- */
.spinner{
  width:40px;height:40px;border-width:2.5px;border-color:rgba(255,255,255,.12);
  border-top-color:var(--primary);
  filter:drop-shadow(0 0 8px color-mix(in srgb,var(--primary) 45%,transparent));
}
::selection{background:color-mix(in srgb,var(--primary) 50%,transparent);color:#fff}
:focus-visible{outline:2px solid color-mix(in srgb,var(--primary) 70%,transparent);outline-offset:2px}

/* ---------- R2-15. 移动端与减动效：完全沿用性能约束 ---------- */
@media (max-width:820px){
  #joinScreen::before,#loginScreen::before{filter:none;opacity:.55;animation:none!important}
  footer.controls .ctl:hover,.more-item:hover,.tb-btn:hover{transform:none}
}
@media (prefers-reduced-motion:reduce){
  #joinScreen::before,#loginScreen::before,.logo,.grid .tile,
  .join-card,.panel,.modal-box,.more-box,.float-win,.toast{animation:none!important}
}