:root{color-scheme:light;font-family:Hiragino Sans,Noto Sans JP,sans-serif;line-height:1.4}*{box-sizing:border-box}body{margin:0;background:linear-gradient(180deg,#f6f7fb,#ebf2ff);color:#1a2433}.container{max-width:980px;margin:0 auto;padding:24px}.grid{display:grid;gap:16px}.grid.one{grid-template-columns:1fr}.grid.two{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}.card{background:#fff;border-radius:12px;padding:16px;border:1px solid #d8e3ff;box-shadow:0 8px 20px #1128590f}.card.soft{background:#f8fbff}.row{display:flex;gap:8px;align-items:center}input,textarea,select,button{width:100%;padding:10px 12px;margin-top:8px;border-radius:8px;border:1px solid #c5d8ff;background:#fff;font:inherit}button{background:#1e5eff;color:#fff;border:none;cursor:pointer}button.secondary{background:#4f647f}button:disabled{opacity:.5;cursor:not-allowed}button.danger{background:#d12a2a}.divider{height:1px;background:#e3ebff;margin:12px 0}.muted{color:#5b6a85;font-size:.92rem}.error{margin-top:12px;color:#ba2020;background:#ffe9e9;border:1px solid #ffc3c3;padding:10px;border-radius:8px}.label{font-size:.8rem;color:#4a5f88}ul,ol{margin:8px 0;padding-left:20px}.answer-highlight{color:#c62828;font-weight:700}.inline-button{width:auto;margin-left:8px;padding:6px 10px}.game-shell{background:radial-gradient(circle at top,rgba(255,255,255,.32),transparent 42%),repeating-linear-gradient(115deg,rgba(255,255,255,.18) 0 6px,transparent 6px 30px),#ffd400;border-radius:28px;padding:24px;border:4px solid #d7a700;box-shadow:0 24px 60px #4c36002e}.game-panel{background:linear-gradient(180deg,#1764dc,#1148bc);border-radius:24px;padding:28px;color:#fff7d6;box-shadow:inset 0 0 0 3px #001b5f59}.game-titlebar{display:flex;justify-content:space-between;align-items:center;background:#16181d;color:#fff3b2;border-radius:16px 16px 0 0;padding:18px 24px;font-size:2rem;font-weight:900;letter-spacing:.08em;margin-bottom:20px}.game-titlebar.center{justify-content:center}.title-chip{display:inline-flex;align-items:center;justify-content:center;background:#ffd93d;color:#29220d;border-radius:10px;padding:10px 16px;font-size:1.05rem;font-weight:800}.stat-strip{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:18px 0}.stat-card{background:#061d5952;border-radius:14px;padding:16px}.answer-form-panel,.waiting-panel{background:#07194e52;border-radius:18px;padding:24px}.answer-question,.review-question{text-align:center;font-size:2rem;color:#fff3b0;margin:12px 0 24px}.review-question{color:#4c3a00}.choice-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-bottom:20px}.choice-card{width:100%;margin-top:0;min-height:92px;display:flex;flex-direction:column;align-items:flex-start;justify-content:center;background:linear-gradient(180deg,#245cff,#1f35d9);border:2px solid rgba(255,223,102,.7)}.choice-card--selected{outline:4px solid #ffe06b}.answer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px}.answer-board-card{min-height:140px;margin-top:0;display:flex;flex-direction:column;justify-content:space-between;background:linear-gradient(180deg,#244dff,#1823c6);color:#efe9ff;border-radius:10px;border:2px solid rgba(255,239,172,.35);box-shadow:0 6px #080a4733}.answer-board-card--correct{background:linear-gradient(180deg,#ff5050,#d22626);color:#fff5ec}.answer-board-main{font-size:2rem;line-height:1.2;padding:18px 18px 8px;word-break:break-word}.answer-board-name{font-size:1rem;padding:0 18px 18px;opacity:.95}.results-list{list-style:none;margin:0 0 24px;padding:0}.results-item{display:grid;grid-template-columns:160px 1fr 120px;gap:12px;align-items:center;background:#07194e47;border-radius:14px;padding:14px 16px;margin-bottom:10px;color:#fff9d6}.results-rank{font-weight:900}.results-name,.results-score{font-size:1.1rem}.create-toolbar{margin-bottom:16px}.create-question-input{min-height:110px;font-size:1.4rem}.create-tab-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;margin:20px auto;max-width:460px}.create-tab{margin-top:0;border-radius:0;background:linear-gradient(180deg,#235eff,#153ec9);font-size:1.6rem;font-weight:800}.create-tab.active{box-shadow:inset 0 -6px #ffd400}.choice-editor{display:grid;gap:12px}.choice-editor-row{display:grid;grid-template-columns:96px 1fr;gap:12px;align-items:center;background:#081e604d;padding:14px;border-radius:14px}.choice-correct-toggle{display:flex;align-items:center;gap:10px;font-size:2rem;font-weight:900;color:#ffd84c}.choice-correct-toggle input{width:auto;margin:0}.create-submit-button{margin-top:24px;background:linear-gradient(180deg,#ffe34d,#f7c700);color:#232323;font-size:2rem;font-weight:900}@media (max-width: 768px){.container{padding:12px}.card{padding:12px;border-radius:10px}.row{flex-direction:column;align-items:stretch;gap:0}.game-titlebar{font-size:1.4rem;flex-direction:column;gap:10px}.stat-strip,.choice-grid,.create-tab-row,.results-item,.choice-editor-row{grid-template-columns:1fr}.answer-board-main{font-size:1.5rem}h1{font-size:1.4rem;margin:0 0 8px}h2{font-size:1.1rem;margin:0 0 6px}input,textarea,select,button{font-size:16px}}