:root{--bg-sky: #cfe8ff;--bg-ground: #b8e3a8;--bg-track: #e8c38a;--school-wall: #fff5d6;--school-roof: #d76b5d;--ink: #2a2a2a;--ink-soft: #555;--sidebar-bg: #ffffffee;--sidebar-border: #e4e4e4;--accent: #ff8a4c;--bubble-bg: #fff;--bubble-border: #333}*{box-sizing:border-box}html,body{margin:0;padding:0;height:100%;overflow:hidden;font-family:Jua,Pretendard,-apple-system,BlinkMacSystemFont,Segoe UI,system-ui,sans-serif;color:var(--ink);background:var(--bg-sky)}#app{display:flex;height:100vh;height:100dvh;width:100%;overflow:hidden}.main-col{display:flex;flex-direction:column;flex:1 1 0;min-width:0;min-height:0}.top-bar{flex:0 0 auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 16px;background:#fffaf0;border-bottom:2px solid var(--ink);box-shadow:0 2px #0000000f;z-index:20}.top-bar-left,.top-bar-right{display:flex;align-items:center;gap:8px}.top-bar-left{min-width:0;flex:1 1 auto}.top-bar-left 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var(--sidebar-border);border-radius:6px;background:#fff;outline:none;box-sizing:border-box}.admin-select:focus{border-color:var(--accent)}.admin-actions{display:flex;gap:6px;margin-top:10px}.admin-btn{flex:1;padding:8px 10px;border-radius:6px;border:1.5px solid var(--sidebar-border);background:#fff;font-family:inherit;font-size:13px;cursor:pointer}.admin-btn:hover{background:#f5f5f5}.admin-btn.primary{background:var(--accent);color:#fff;border-color:var(--accent);font-weight:600}.admin-btn.primary:hover{filter:brightness(1.05);background:var(--accent)}.admin-hint{margin:8px 0 0;font-size:11px;color:var(--ink-soft)}@media (max-width: 640px){.admin-panel{bottom:8px;right:8px;left:8px;width:auto}}#me-avatar{cursor:pointer;transition:transform 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pulse{0%,to{opacity:1}50%{opacity:.4}}.notice-banner{padding:8px 10px 0;background:var(--sidebar-bg);animation:noticeIn .25s ease-out}.notice-banner[hidden]{display:none}.notice-toggle{display:inline-flex;align-items:center;gap:6px;width:100%;padding:6px 10px;background:#fff7d6;border:1.5px solid #e8bf50;border-radius:10px;font-family:inherit;font-size:13px;font-weight:600;color:#7a5b00;cursor:pointer;transition:background .12s;text-align:left}.notice-toggle:hover{background:#fff1bc}.notice-title{flex-shrink:0}.notice-meta{margin-left:auto;font-size:11px;font-weight:400;color:#a38033;white-space:nowrap}.notice-chevron{font-size:12px;margin-left:6px;transition:transform .18s;flex-shrink:0}.notice-banner.collapsed .notice-chevron{transform:rotate(-90deg)}.notice-body{overflow:hidden;background:#fffcee;border:1.5px solid #e8bf50;border-top:none;border-radius:0 0 10px 10px;padding:10px 12px;margin:-1px 0 0;font-size:13px;line-height:1.5;color:#7a5b00;word-break:break-word;max-height:400px;transition:max-height .2s ease,padding .2s ease,opacity .15s}.notice-banner.collapsed .notice-body{max-height:0;padding-top:0;padding-bottom:0;opacity:0;border-width:0 1.5px}.notice-body a{color:#b86400;text-decoration:underline;word-break:break-all}@keyframes noticeIn{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}#chat-log{flex:1 1 0;min-height:0;height:0;overflow-y:auto;overscroll-behavior:contain;margin:0;padding:12px;list-style:none;display:flex;flex-direction:column;gap:8px;box-sizing:border-box}#chat-log>li:first-child{margin-top:auto}#chat-log li{font-size:13px;line-height:1.45;padding:8px 10px;background:#f7f7f7;border-radius:8px;word-break:break-word;animation:slideIn .2s ease-out}@keyframes slideIn{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}#chat-log li .msg-header{display:flex;justify-content:space-between;align-items:baseline;gap:6px;margin-bottom:2px}#chat-log li .name{font-weight:600}#chat-log li .time{font-size:11px;color:var(--ink-soft);flex-shrink:0}#chat-log li .text{display:block;line-height:1.45}#chat-log li .text a{color:var(--accent);text-decoration:underline;word-break:break-all}#chat-log li .text a:hover{filter:brightness(.9)}#chat-log li.system{text-align:center;background:transparent;color:var(--ink-soft);font-size:12px;padding:4px}#chat-log li.mentioned-me{background:#fff4c4;border-left:3px solid var(--accent);padding-left:7px;box-shadow:0 0 0 1px #ff8a4c40}.mention{display:inline-block;padding:0 5px;background:#e6f1ff;color:#1a6fbb;border-radius:4px;font-weight:600;margin:0 1px}.mention.mine{background:#ffd56b;color:#6a3a00}.mention-popup{position:absolute;left:8px;right:64px;bottom:calc(100% + 4px);background:#fff;border:1.5px solid var(--ink);border-radius:10px;box-shadow:0 6px 16px #0000002e;max-height:180px;overflow-y:auto;z-index:50;display:flex;flex-direction:column;padding:4px;gap:2px}.mention-popup[hidden]{display:none}.mention-item{display:flex;align-items:center;gap:8px;padding:6px 8px;border:none;background:#fff;border-radius:6px;font-family:inherit;font-size:13px;color:var(--ink);cursor:pointer;text-align:left;transition:background .08s,color .08s,box-shadow .08s}.mention-item.selected{background:var(--accent);color:var(--ink);font-weight:700;box-shadow:0 2px 6px #ff8a4c59}.mention-item.selected .mention-name{color:var(--ink)}.mention-item .mention-emoji{font-size:18px;line-height:1;flex-shrink:0}.mention-item .mention-name{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:500;color:var(--ink)}#chat-form{display:flex;align-items:center;gap:6px;padding:6px 8px;height:44px;box-sizing:border-box;border-top:1px solid var(--sidebar-border);flex:0 0 auto}#chat-input{flex:1;min-width:0;height:32px;line-height:1;padding:0 10px;font-size:13px;border:1px solid var(--sidebar-border);border-radius:6px;outline:none;box-sizing:border-box}#chat-input:focus{border-color:var(--accent)}#chat-form>button{height:32px;line-height:1;padding:0 14px;background:var(--accent);color:#fff;border:none;border-radius:6px;font-weight:600;cursor:pointer;box-sizing:border-box}#chat-form>button:hover{filter:brightness(1.05)}@media (max-width: 640px){#app{flex-direction:column}.main-col{flex:1 1 55%;padding-top:44px}#sidebar{width:100%;min-width:0;flex:0 0 45%;height:auto;border-left:none;border-top:1px solid var(--sidebar-border)}#scene{flex:1 1 auto;height:auto}.top-bar{position:fixed;top:0;left:0;right:0;z-index:30}.sidebar-header{padding:12px}.sidebar-header h1{font-size:17px}.tagline{font-size:11px;margin:3px 0 10px}#help-btn,#pause-btn,#game-btn,#fortune-btn,#sleepers-btn{width:30px;height:30px;font-size:14px;border-width:2px;box-shadow:0 4px 0 var(--ink)}#help-btn:active,#pause-btn:active,#game-btn:active,#fortune-btn:active,#sleepers-btn:active{transform:translateY(3px);box-shadow:0 1px 0 var(--ink)}.top-bar{padding:6px 8px;gap:6px}.top-bar-right{gap:6px}.help-modal{padding:12px;align-items:flex-end}.help-card{padding:18px 16px 14px;border-radius:14px 14px 12px 12px;max-height:80vh}.help-card h2{font-size:16px}.help-list{font-size:13px;padding-left:18px}.help-tip{font-size:12px}.help-close{top:8px;right:8px}.emoji-grid{grid-template-columns:repeat(5,1fr)}.emoji-btn{font-size:20px;padding:4px 0}.copyright-inline{font-size:11px;padding:3px 6px;white-space:normal;overflow:visible;text-overflow:clip;line-height:1.25}.top-bar-left .copyright-inline{white-space:normal;overflow:visible;text-overflow:clip}.copyright-sep{display:none}.copyright-link{display:block}}@media (max-width: 640px) and (orientation: landscape){#sidebar{flex:0 0 50%}.main-col{flex:1 1 50%}}