:root{color:#172033;background:#f4f7fb;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-synthesis:none;line-height:1.5;text-rendering:optimizeLegibility}*{box-sizing:border-box}body{min-width:320px;min-height:100vh;margin:0}button,input,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:wait;opacity:.72}a{color:#1d4ed8}.center-shell{display:grid;gap:22px;min-height:100vh;place-items:center;padding:28px}.new-room-shell{align-content:center}.create-panel,.empty-state,.room-list-panel{width:min(820px,100%);border:1px solid #d7deea;border-radius:8px;background:#fff;padding:32px;box-shadow:0 18px 48px #16203314}.create-panel{display:grid;gap:24px}.empty-state{display:grid;gap:16px;text-align:center}.eyebrow{margin:0 0 4px;color:#637083;font-size:.78rem;font-weight:700;text-transform:uppercase}h1{margin:0;color:#101828;font-size:clamp(1.7rem,4vw,2.5rem);font-weight:760;letter-spacing:0;line-height:1.1}h2{margin:0;color:#101828;font-size:1.18rem;font-weight:760;letter-spacing:0;line-height:1.2}.primary-button,.secondary-button,.danger-button,.primary-link{display:inline-flex;min-height:44px;align-items:center;justify-content:center;border-radius:8px;font-weight:750;letter-spacing:0;text-decoration:none}.primary-button,.primary-link{width:fit-content;border:1px solid #1f4fd1;background:#2563eb;color:#fff;padding:0 18px}.primary-button:hover,.primary-link:hover{background:#1d4ed8}.secondary-button{flex:0 0 auto;border:1px solid #c6cfdd;background:#fff;color:#233149;padding:0 14px}.secondary-button:hover{border-color:#2563eb;color:#1d4ed8}.danger-button{width:fit-content;flex:0 0 auto;border:1px solid #d92d20;background:#d92d20;color:#fff;padding:0 14px}.danger-button:hover{background:#b42318}.error-text{margin:0;color:#b42318;font-weight:650}.field{display:grid;gap:8px}.field span{color:#344256;font-size:.94rem;font-weight:760}.field input{min-height:46px;width:100%;border:1px solid #c6cfdd;border-radius:8px;outline:none;padding:0 13px;color:#172033;background:#fff}.field input:focus{border-color:#2563eb;box-shadow:0 0 0 3px #2563eb29}.mode-picker{display:grid;gap:10px;margin:0;border:0;padding:0}.mode-picker legend{margin-bottom:8px;color:#344256;font-size:.94rem;font-weight:760}.mode-option{display:grid;grid-template-columns:auto minmax(0,1fr);gap:12px;align-items:start;border:1px solid #c6cfdd;border-radius:8px;background:#fff;padding:14px;color:#172033}.mode-option.selected{border-color:#2563eb;background:#f5f9ff;box-shadow:0 0 0 3px #2563eb1f}.mode-option input{width:18px;height:18px;margin:3px 0 0}.mode-option span{display:grid;gap:3px}.mode-option strong{color:#101828;font-weight:780}.mode-option small{color:#637083;font-size:.9rem}.link-list{display:grid;gap:14px}.share-link{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:14px;align-items:center;border:1px solid #d7deea;border-radius:8px;padding:16px;background:#f9fbff}.share-label{display:block;margin-bottom:5px;color:#45546a;font-size:.9rem;font-weight:760}.share-link a{overflow-wrap:anywhere;font-size:.94rem}.room-list-panel{display:grid;gap:18px;padding:24px}.room-list{display:grid;gap:10px}.room-list-item{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:14px;align-items:center;border:1px solid #d7deea;border-radius:8px;background:#fbfcff;padding:14px}.room-id,.room-name,.room-mode,.room-time{display:block}.room-name{color:#101828;font-size:1rem;font-weight:780}.room-id{margin-top:3px;color:#101828;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,monospace;font-size:.94rem;font-weight:760}.room-mode{width:fit-content;margin-top:8px;border:1px solid #c7d7fe;border-radius:999px;background:#eef4ff;padding:2px 9px;color:#2446a9;font-size:.78rem;font-weight:780}.room-time{margin-top:3px;color:#637083;font-size:.88rem}.room-actions{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:10px}.room-actions a{display:inline-flex;min-height:36px;align-items:center;color:#1d4ed8;font-weight:720;text-decoration:none}.room-actions a:hover{text-decoration:underline}.room-actions .danger-button{min-height:36px}.room-shell{min-height:100vh}.top-bar{position:sticky;z-index:2;top:0;display:flex;min-height:72px;align-items:center;justify-content:space-between;gap:16px;border-bottom:1px solid #d7deea;background:#fffffff0;padding:12px clamp(16px,4vw,36px);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.top-bar h1{font-size:1.24rem}.metrics{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:10px}.status-pill,.counter{display:inline-flex;min-height:38px;align-items:center;gap:8px;border:1px solid #d7deea;border-radius:999px;background:#fff;padding:0 13px;color:#344256;font-size:.92rem;font-weight:720;white-space:nowrap}.status-pill.good{border-color:#b8dec7;color:#137044}.status-pill.bad{border-color:#f3b7b1;color:#b42318}.counter strong{color:#101828;font-variant-numeric:tabular-nums}.document-wrap{display:grid;gap:12px;justify-items:center;padding:clamp(18px,4vw,42px)}.room-notice{width:min(920px,100%);margin:0;color:#45546a;font-weight:680}.document-editor{width:min(920px,100%);min-height:calc(100vh - 144px);resize:vertical;border:1px solid #ccd5e3;border-radius:8px;outline:none;background:#fff;box-shadow:0 20px 60px #1620331a;color:#151f31;padding:clamp(20px,4vw,42px);font-family:ui-serif,Georgia,Cambria,Times New Roman,Times,serif;font-size:1.05rem;line-height:1.7}.document-editor:focus{border-color:#2563eb;box-shadow:0 0 0 3px #2563eb29,0 20px 60px #1620331a}.document-editor:disabled{color:#637083}.document-editor.readonly{background:#fbfcff;color:#172033;cursor:default}.qna-wrap{display:grid;min-height:calc(100vh - 72px);align-items:center;justify-items:center;padding:clamp(22px,5vw,54px)}.qna-intro,.qna-stage,.qna-complete{width:min(980px,100%);display:grid;gap:24px}.qna-rule-row{display:flex;flex-wrap:wrap;gap:10px}.qna-rule-row span{display:inline-flex;min-height:34px;align-items:center;border:1px solid #d7deea;border-radius:999px;background:#fff;padding:0 12px;color:#344256;font-size:.9rem;font-weight:720}.qna-copy{max-width:720px;margin:0;color:#45546a;font-size:1rem;font-weight:620}.qna-progress-row{display:flex;align-items:center;justify-content:space-between;gap:16px}.qna-step{color:#344256;font-size:.95rem;font-weight:780}.qna-timers{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:10px}.timer-tile{display:grid;min-width:118px;gap:1px;border:1px solid #d7deea;border-radius:8px;background:#fff;padding:10px 12px;color:#45546a}.timer-tile strong{color:#101828;font-size:1.42rem;font-variant-numeric:tabular-nums;font-weight:820;line-height:1}.timer-tile span{font-size:.78rem;font-weight:760;text-transform:uppercase}.timer-tile.urgent{border-color:#f3b7b1;background:#fff7f5}.timer-tile.urgent strong{color:#b42318}.qna-progress-track{overflow:hidden;width:100%;height:8px;border-radius:999px;background:#dbe4f1}.qna-progress-track span{display:block;height:100%;border-radius:inherit;background:#2563eb;transition:width .16s ease}.qna-prompt h2{max-width:900px;color:#101828;font-size:clamp(1.7rem,4vw,3.15rem);line-height:1.08}.qna-answer{width:100%;min-height:min(34vh,320px);resize:vertical;border:1px solid #c6cfdd;border-radius:8px;outline:none;background:#fff;box-shadow:0 18px 48px #16203314;color:#151f31;padding:clamp(16px,3vw,26px);font-size:1.08rem;line-height:1.65}.qna-answer:focus{border-color:#2563eb;box-shadow:0 0 0 3px #2563eb29,0 18px 48px 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