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(max-width:900px){.room-stage-sticky{position:-webkit-sticky;position:sticky;top:0;z-index:40;background:var(--bg);padding-bottom:4px}}.room-page{padding:26px 30px 60px;max-width:1700px;margin:0 auto;width:100%}@media (min-width:701px) and (pointer:coarse){.room-page{padding:10px}}@media (max-width:700px){.room-page{padding:8px 8px 76px}.room-page-teacher{padding-top:54px}}.room-bottombar,.room-topbar{position:fixed;left:0;right:0;z-index:70;display:flex;align-items:center;gap:8px;background:var(--panel);padding:7px 10px}.room-topbar{top:0;border-bottom:1px solid var(--border)}.room-bottombar{bottom:0;border-top:1px solid var(--border);padding-bottom:calc(7px + env(safe-area-inset-bottom))}.room-student-page{max-width:720px;margin:0 auto;padding:20px 12px 60px;width:100%}@media (min-width:1000px) and (pointer:fine){.room-student-page{max-width:1240px}}@media (min-width:701px) and (pointer:coarse){.room-student-page{max-width:none;padding:10px 10px 64px}}@media (max-width:700px){.room-student-page{padding:8px 10px 76px}}.room-head{margin-bottom:10px}.room-head-right{display:flex;justify-content:space-between;align-items:center;margin-top:12px}.room-head-right h1{margin:0;font-size:20px}@media (max-width:700px),(pointer:coarse){.room-head{display:flex;align-items:center;gap:12px}.room-head-logo img{width:118px!important;margin:0!important}.room-head-right{flex:1 1;margin-top:0;flex-direction:column;align-items:flex-end;gap:4px}.room-head-right h1{font-size:15px}}@media (min-width:701px) and (pointer:coarse){.room-head-logo img{width:92px!important}.room-joined .room-head{display:none}}.room-joined .room-head-lang{display:none}.cal-daystrip{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(0,1fr);grid-gap:6px;gap:6px;margin-bottom:10px;padding:8px 10px}.cal-daystrip button{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:0;min-width:0;padding:5px 4px;line-height:1.2;text-align:center;overflow:hidden}.cal-daystrip .d-date{display:block;font-weight:700;font-size:12.5px;white-space:nowrap}.cal-daystrip .d-day{display:block;font-size:11px;opacity:.8;white-space:nowrap}@media (max-width:700px){.cal-daystrip{gap:4px}.cal-daystrip button{padding:5px 1px}.cal-daystrip .d-date{font-size:11.5px}.cal-daystrip .d-day{font-size:10px}}.cal-card{padding:14px}@media (max-width:900px){.cal-root{margin-left:-8px;margin-right:-8px}.cal-card{padding:8px 4px}.cal-daystrip{padding:6px 5px;margin-bottom:8px}}.cal-toolbar-nav,.cal-toolbar-top{display:contents}@media (max-width:900px){.cal-toolbar{width:100%;gap:8px}.cal-toolbar-nav,.cal-toolbar-top{display:flex;align-items:center;gap:8px;width:100%}.cal-toolbar-top>h1{flex:0 0 auto}.cal-toolbar .cal-search{flex:1 1 120px;min-width:0}.cal-toolbar .cal-search .input{width:100%!important}.cal-toolbar .seg{flex:1 1 auto;display:flex;min-width:0}.cal-toolbar .seg button{flex:1 1;justify-content:center;padding:6px 4px}.cal-toolbar .cal-navbtns{flex:1 1 auto;display:flex;min-width:0}.cal-toolbar .cal-navbtns .btn{flex:0 0 auto;justify-content:center}.cal-toolbar .cal-navbtns .cal-today{flex:1 1 auto}}.knock-card{animation:knockPulse 1.5s ease-in-out infinite;position:-webkit-sticky;position:sticky;top:4px;z-index:3}@keyframes knockPulse{0%,to{box-shadow:0 0 0 0 color-mix(in srgb,var(--brand) 45%,transparent)}55%{box-shadow:0 0 0 8px color-mix(in srgb,var(--brand) 0,transparent)}}@media (prefers-reduced-motion:reduce){.knock-card{animation:none;border-width:2px}}.chat-del{flex:0 0 auto;border:0;background:none;color:var(--muted);cursor:pointer;font-size:12px;line-height:1;padding:2px 4px;border-radius:5px;opacity:0;transition:opacity .12s ease,color .12s ease}.chat-del:focus-visible,.chat-line:hover .chat-del{opacity:1}.chat-del:hover{color:var(--danger);background:color-mix(in srgb,var(--danger) 12%,transparent)}@media (hover:none){.chat-del{opacity:.55}}