:root{--text:#6b6375;--text-h:#08060d;--bg:#fff;--border:#e5e4e7;--code-bg:#f4f3ec;--accent:#aa3bff;--accent-bg:#aa3bff1a;--accent-border:#aa3bff80;--social-bg:#f4f3ec80;--shadow:#0000001a 0 10px 15px -3px, #0000000d 0 4px 6px -2px;--sans:system-ui, "Segoe UI", Roboto, sans-serif;--heading:system-ui, "Segoe UI", Roboto, sans-serif;--mono:ui-monospace, Consolas, monospace;font:18px/145% var(--sans);letter-spacing:.18px;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;color:var(--text);background:var(--bg);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial}}@media (width<=1024px){:root{font-size:16px}}@media (prefers-color-scheme:dark){:root{--text:#9ca3af;--text-h:#f3f4f6;--bg:#16171d;--border:#2e303a;--code-bg:#1f2028;--accent:#c084fc;--accent-bg:#c084fc26;--accent-border:#c084fc80;--social-bg:#2f303a80;--shadow:#0006 0 10px 15px -3px, #00000040 0 4px 6px -2px}#social .button-icon{filter:invert()brightness(2)}}#root{text-align:center;border-inline:1px solid var(--border);box-sizing:border-box;flex-direction:column;width:1126px;max-width:100%;min-height:100svh;margin:0 auto;display:flex}body{margin:0}h1,h2{font-family:var(--heading);color:var(--text-h);font-weight:500}h1{letter-spacing:-1.68px;margin:32px 0;font-size:56px}@media (width<=1024px){h1{margin:20px 0;font-size:36px}}h2{letter-spacing:-.24px;margin:0 0 8px;font-size:24px;line-height:118%}@media (width<=1024px){h2{font-size:20px}}p{margin:0}code,.counter{font-family:var(--mono);color:var(--text-h);border-radius:4px;display:inline-flex}code{background:var(--code-bg);padding:4px 8px;font-size:15px;line-height:135%}*{box-sizing:border-box;margin:0;padding:0}body{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);min-height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang TC,Microsoft JhengHei,sans-serif}#root{min-height:100vh}.app{min-height:100vh;padding:20px}.menu{justify-content:center;align-items:center;display:flex}.menu-container{text-align:center;background:#fff;border-radius:24px;width:100%;max-width:480px;padding:48px;box-shadow:0 20px 60px #0000004d}.menu-container h1{color:#333;margin-bottom:8px;font-size:2.5rem}.subtitle{color:#666;margin-bottom:32px;font-size:1.1rem}.menu-buttons{flex-direction:column;gap:16px;margin-bottom:32px;display:flex}.menu-buttons h2{color:#888;margin-bottom:8px;font-size:1rem}.menu-btn{cursor:pointer;text-align:left;border:none;border-radius:16px;align-items:center;gap:16px;padding:20px 24px;transition:all .3s;display:flex}.menu-btn.primary{color:#fff;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%)}.menu-btn.secondary{color:#fff;background:linear-gradient(135deg,#f093fb 0%,#f5576c 100%)}.menu-btn:hover{transform:translateY(-4px);box-shadow:0 8px 24px #0003}.menu-btn .icon{font-size:2rem}.menu-btn .text{flex:1;font-size:1.2rem;font-weight:600}.menu-btn .desc{opacity:.85;font-size:.85rem}.rules{text-align:left;background:#f8f9fa;border-radius:16px;padding:24px}.rules h3{color:#333;margin-bottom:12px}.rules ul{color:#666;list-style:none}.rules li{padding:6px 0 6px 20px;position:relative}.rules li:before{content:"•";color:#667eea;position:absolute;left:0}.game{max-width:600px;margin:0 auto}.game-header{justify-content:space-between;align-items:center;margin-bottom:16px;display:flex}.game-header h1{color:#fff;font-size:1.5rem}.back-btn{color:#fff;cursor:pointer;background:#fff3;border:none;border-radius:12px;padding:10px 20px;font-size:1rem;transition:all .3s}.back-btn:hover{background:#ffffff4d}.header-info{gap:12px;display:flex}.timer{color:#333;background:#fff;border-radius:20px;padding:8px 16px;font-weight:600}.timer.warning{color:#fff;background:#ff4757;animation:1s infinite pulse}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.05)}}.game-mode-badge{color:#667eea;text-align:center;background:#fff;border-radius:20px;margin-bottom:16px;padding:12px 24px;font-weight:600}.game-status{text-align:center;background:#fff;border-radius:20px;margin-bottom:16px;padding:24px}.game-over h2{color:#333;margin-bottom:12px;font-size:1.8rem}.winner{color:#667eea;margin-bottom:20px;font-size:1.4rem}.play-again{color:#fff;cursor:pointer;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);border:none;border-radius:12px;padding:14px 32px;font-size:1.1rem;transition:transform .3s}.play-again:hover{transform:scale(1.05)}.current-turn{color:#333;font-size:1.2rem}.current-turn strong{color:#667eea;font-size:1.5rem}.ai-thinking{color:#764ba2;font-weight:600}.message{color:#333;text-align:center;background:#fff;border-radius:12px;margin-bottom:16px;padding:16px 24px;font-size:1.1rem;box-shadow:0 4px 12px #0000001a}.input-area{gap:12px;margin-bottom:24px;display:flex}.input-area input{color:#333;background:#fff;border:2px solid #ffffff4d;border-radius:12px;outline:none;flex:1;padding:16px 20px;font-size:1.1rem;transition:border-color .3s}.input-area input:focus{border-color:#fff}.input-area input:disabled{cursor:not-allowed;background:#f0f0f0}.input-area input::placeholder{color:#999}.submit-btn{color:#fff;cursor:pointer;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);border:none;border-radius:12px;padding:16px 28px;font-size:1.1rem;transition:all .3s}.submit-btn:hover:not(:disabled){transform:scale(1.05)}.submit-btn:disabled{opacity:.5;cursor:not-allowed}.giveup-btn{color:#fff;cursor:pointer;background:#ff4757;border:none;border-radius:12px;padding:16px 24px;font-size:1rem;transition:all .3s}.giveup-btn:hover{background:#ff6b7a}.records{background:#fff;border-radius:20px;margin-bottom:16px;padding:20px}.records h3{color:#333;margin-bottom:16px;font-size:1.1rem}.records-list{flex-wrap:wrap;gap:8px;max-height:300px;display:flex;overflow-y:auto}.record-item{border-radius:20px;align-items:center;gap:8px;padding:8px 14px;font-size:.95rem;animation:.3s slideIn;display:flex}@keyframes slideIn{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.record-item.player1{color:#1976d2;background:#e3f2fd}.record-item.player2{color:#c2185b;background:#fce4ec}.record-item.ai{color:#7b1fa2;background:#f3e5f5}.record-word{font-weight:500}.record-player{font-size:.85rem}.record-arrow{color:#999;margin-left:4px}.used-count{text-align:center;color:#fffc;font-size:.95rem}.records-list::-webkit-scrollbar{width:6px}.records-list::-webkit-scrollbar-track{background:#f1f1f1;border-radius:3px}.records-list::-webkit-scrollbar-thumb{background:#667eea;border-radius:3px}@media (width<=600px){.menu-container{padding:32px 24px}.menu-container h1{font-size:2rem}.input-area{flex-direction:column}.submit-btn,.giveup-btn{width:100%}}