:root{--bg: #0e1116;--bg-soft: #151a22;--bg-card: #1a212c;--border: #2a3342;--text: #e8edf4;--text-dim: #93a1b5;--primary: #4f7cff;--primary-hover: #6b92ff;--danger: #e5484d;--danger-soft: #b34045;--ok: #2fb56b;--rec: #ff4757;--radius: 10px}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.6}a{color:var(--primary);text-decoration:none}a:hover{color:var(--primary-hover)}h1,h2,h3{margin:0 0 .5em;line-height:1.3}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:1px solid transparent;border-radius:8px;padding:8px 16px;font-size:14px;cursor:pointer;background:var(--bg-card);color:var(--text);transition:background .15s,opacity .15s,transform .05s;text-decoration:none;white-space:nowrap}.btn:hover{background:#232c3a;color:var(--text)}.btn:active{transform:translateY(1px)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-hover);color:#fff}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover{background:#ff5c61;color:#fff}.btn-danger-soft{background:transparent;border-color:var(--danger-soft);color:#ff8a8d}.btn-danger-soft:hover{background:#e5484d1f;color:#ff8a8d}.btn-ghost{background:transparent;border-color:var(--border)}.btn-ghost:hover{background:var(--bg-soft)}.btn-sm{padding:5px 10px;font-size:13px;border-radius:6px}.btn-xs{padding:3px 8px;font-size:12px;border-radius:6px}.btn-lg{padding:12px 26px;font-size:16px;border-radius:10px}.btn-block{width:100%}label{display:block;font-size:13px;color:var(--text-dim);margin:14px 0 6px}input,select{width:100%;padding:10px 12px;margin-top:4px;background:var(--bg);color:var(--text);border:1px solid var(--border);border-radius:8px;font-size:14px}input:focus,select:focus{outline:none;border-color:var(--primary)}.form-error{color:#ff8a8d;font-size:13px;margin:10px 0 0}.banner-error{background:#e5484d1f;border:1px solid var(--danger-soft);color:#ff8a8d;padding:10px 14px;border-radius:8px;margin:12px 0}.banner-muted{background:#e5484d1f;border:1px solid var(--danger-soft);color:#ff8a8d;padding:10px 14px;border-radius:8px;margin:12px 0;font-weight:600}.center-screen{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:20px}.hint-text{font-size:12px;color:var(--text-dim)}.wechat-hint{background:#2b2410;color:#e8c96b;font-size:12px;display:flex;align-items:center;justify-content:space-between;gap:10px;padding:8px 16px}.wechat-hint button{background:none;border:none;color:#e8c96b;font-size:18px;cursor:pointer}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}.auth-card{background:var(--bg-card);border:1px solid var(--border);border-radius:14px;padding:32px;width:100%;max-width:380px}.auth-card h1{font-size:22px}.auth-back{font-size:13px;color:var(--text-dim)}.auth-alt{font-size:13px;color:var(--text-dim);margin-top:16px;text-align:center}.room-name-line{font-size:14px;color:var(--text-dim)}.landing{min-height:100vh;display:flex;flex-direction:column}.landing-nav{display:flex;align-items:center;justify-content:space-between;padding:18px 32px;border-bottom:1px solid var(--border)}.landing-nav nav{display:flex;gap:10px}.logo{font-size:18px;font-weight:700}.landing-main{flex:1;max-width:960px;margin:0 auto;padding:72px 24px 48px;text-align:center}.landing-main h1{font-size:48px}.landing-main h1 em{color:var(--primary);font-style:normal}.landing-sub{font-size:17px;color:var(--text-dim);max-width:560px;margin:16px auto 28px}.landing-actions{margin:8px 0 64px}.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;text-align:left}.feature-card{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;padding:20px}.feature-icon{font-size:26px}.feature-card h3{font-size:16px;margin:10px 0 6px}.feature-card p{font-size:13px;color:var(--text-dim);margin:0}.landing-footer{text-align:center;color:var(--text-dim);font-size:12px;padding:20px;border-top:1px solid var(--border)}.modal-mask{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;display:flex;align-items:center;justify-content:center;z-index:50;padding:20px}.modal{background:var(--bg-card);border:1px solid var(--border);border-radius:14px;width:100%;max-width:460px;max-height:88vh;overflow:auto}.modal-head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--border)}.modal-head h3{margin:0;font-size:16px}.icon-btn{background:none;border:none;color:var(--text-dim);font-size:20px;cursor:pointer}.modal-body{padding:20px}.modal-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:18px;flex-wrap:wrap}.confirm-msg{margin:0;font-size:14px}.share-link-box{background:var(--bg);border:1px dashed var(--border);border-radius:8px;padding:10px 12px;font-size:13px;word-break:break-all;margin:10px 0}.share-form label{margin:10px 0 4px}.badge{font-size:12px;padding:2px 10px;border-radius:20px;border:1px solid var(--border);color:var(--text-dim)}.badge-idle{color:var(--text-dim)}.badge-ready{color:#6bc3ff;border-color:#3b6ea0}.badge-recording{color:#fff;background:var(--rec);border-color:var(--rec);animation:pulse 1.4s infinite}.badge-ended{color:var(--ok);border-color:#2a5c40}@keyframes pulse{0%,to{opacity:1}50%{opacity:.55}}.dashboard{min-height:100vh}.dash-header{display:flex;align-items:center;justify-content:space-between;padding:14px 28px;border-bottom:1px solid var(--border)}.dash-user{display:flex;align-items:center;gap:12px;font-size:14px;color:var(--text-dim)}.dash-main{max-width:1000px;margin:0 auto;padding:28px 24px 60px}.dash-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:22px;flex-wrap:wrap}.dash-top h1{margin:0}.session-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px}.session-card{display:block;background:var(--bg-card);border:1px solid var(--border);border-radius:12px;padding:16px;color:var(--text)}.session-card:hover{border-color:var(--primary);color:var(--text)}.session-card-top{display:flex;align-items:center;justify-content:space-between;gap:8px}.session-name{font-weight:600;font-size:15px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.session-meta{display:flex;gap:14px;color:var(--text-dim);font-size:12px;margin-top:10px}.session-room{font-size:12px;color:var(--primary);margin-top:6px}.empty-state{text-align:center;color:var(--text-dim);padding:60px 0;background:var(--bg-card);border:1px dashed var(--border);border-radius:12px}.empty-room{grid-column:1 / -1;text-align:center;color:var(--text-dim);padding:40px}.session-title-row{display:flex;align-items:center;gap:10px}.title-input{width:320px;margin:0;font-size:18px;font-weight:600;padding:8px 12px}.session-title-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.track-table{width:100%;border-collapse:collapse;background:var(--bg-card);border:1px solid var(--border);border-radius:12px;overflow:hidden}.track-table th,.track-table td{padding:10px 14px;text-align:left;border-bottom:1px solid var(--border);font-size:14px}.track-table th{color:var(--text-dim);font-weight:500;font-size:12px;background:var(--bg-soft)}.track-table tr:last-child td{border-bottom:none}.track-name-input{width:160px;margin:0;padding:6px 10px;font-size:14px}.track-actions{display:flex;gap:6px;flex-wrap:wrap}.host-tag{font-size:11px;color:var(--primary);border:1px solid var(--primary);border-radius:10px;padding:0 6px;margin-left:6px}.player-bar{margin-top:16px;background:var(--bg-card);border:1px solid var(--border);border-radius:10px;padding:14px}.player-bar audio{width:100%}.room-shell{min-height:100vh;display:flex;flex-direction:column}.room-header{padding:14px 28px;border-bottom:1px solid var(--border);display:flex;align-items:center}.room-header-left{display:flex;align-items:center;gap:14px;flex-wrap:wrap}.room-header h2{margin:0;font-size:18px}.rec-timer{color:var(--rec);font-weight:700;font-variant-numeric:tabular-nums}.participants-grid{flex:1;display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px;padding:24px 28px;align-content:start}.participant{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;padding:18px;text-align:center;position:relative}.participant-muted{opacity:.55}.participant-avatar{width:56px;height:56px;border-radius:50%;margin:0 auto 10px;background:linear-gradient(135deg,#4f7cff,#7a5cff);display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:700}.participant-name{font-size:15px;font-weight:600}.participant-mic{margin-top:8px;font-size:14px}.participant-actions{margin-top:10px}.self-tag{font-size:11px;color:var(--ok);border:1px solid var(--ok);border-radius:10px;padding:0 6px;margin-left:6px}.mic-on{color:var(--ok)}.mic-off{color:var(--text-dim)}.waiting-panel{margin:0 28px 16px;background:#2a2410;border:1px solid #4a3f1c;border-radius:12px;padding:14px 18px}.waiting-panel h3{font-size:14px;color:#e8c96b;margin-bottom:10px}.waiting-row{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:6px 0;border-top:1px solid rgba(232,201,107,.15);font-size:14px}.waiting-row>div{display:flex;gap:8px}.room-footer{border-top:1px solid var(--border);padding:16px 28px 20px;display:flex;flex-direction:column;gap:10px}.record-status{display:flex;align-items:center;justify-content:center}.recording-dot{color:var(--rec);font-weight:600;font-size:14px}.upload-bar{position:relative;background:var(--bg-soft);border-radius:8px;overflow:hidden;height:34px;display:flex;align-items:center;justify-content:center;font-size:13px}.upload-progress{position:absolute;left:0;top:0;bottom:0;background:#4f7cff59;transition:width .3s}.upload-bar span{position:relative;z-index:1}.upload-done{text-align:center;color:var(--ok);font-size:14px;font-weight:600}.upload-error{text-align:center;color:#ff8a8d;font-size:14px}.footer-bar{display:flex;align-items:center;justify-content:center;gap:16px;flex-wrap:wrap}.host-room{display:flex;flex-direction:column;min-height:100vh}.host-room .room-shell{flex:1;min-height:0}.host-controls{border-top:2px solid var(--primary);background:var(--bg-soft)}.host-controls-inner{max-width:1000px;margin:0 auto;display:flex;align-items:center;gap:14px;padding:12px 24px;flex-wrap:wrap}.share-download-card h2{font-size:20px}.share-meta{display:flex;flex-wrap:wrap;gap:8px 16px;font-size:13px;color:var(--text-dim);margin:14px 0}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-thumb{background:var(--border);border-radius:5px}::-webkit-scrollbar-track{background:transparent}@media(max-width:640px){.landing-main h1{font-size:32px}.participants-grid{grid-template-columns:1fr 1fr;padding:16px}.room-header,.room-footer{padding-left:16px;padding-right:16px}.title-input{width:100%}}