:root{--bg-gradient-start: #fdfbf7;--bg-gradient-end: #eddec8;--primary-color: #b08d87;--primary-dark: #8c6a65;--secondary-color: #9cadce;--text-main: #5e5a5a;--text-light: #8a8585;--glass-bg: rgba(255, 255, 255, .65);--glass-border: rgba(255, 255, 255, .4);--glass-shadow: 0 8px 32px 0 rgba(76, 70, 70, .08);--font-main: "HarmonyOS Sans", "PingFang SC", "Microsoft YaHei", sans-serif}body{margin:0;padding:0;font-family:var(--font-main);background:linear-gradient(135deg,var(--bg-gradient-start) 0%,var(--bg-gradient-end) 100%);color:var(--text-main);display:flex;justify-content:center;min-height:100vh;-webkit-font-smoothing:antialiased}#app{width:100%;max-width:480px;padding:24px;box-sizing:border-box;display:flex;flex-direction:column;height:100vh}.glass-panel{background:var(--glass-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--glass-border);border-radius:20px;box-shadow:var(--glass-shadow)}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.home-container,.game-container{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:24px;animation:fadeInUp .6s cubic-bezier(.22,1,.36,1)}.title{font-size:3.5rem;color:var(--primary-color);margin:0;font-weight:200;letter-spacing:2px;text-shadow:2px 2px 0px rgba(255,255,255,.8)}.subtitle{color:var(--text-light);font-size:1.1rem;margin-bottom:48px;letter-spacing:4px;text-transform:uppercase;font-weight:300}.menu{width:100%;display:flex;flex-direction:column;gap:20px}.btn{border:none;padding:18px 30px;border-radius:16px;font-size:1.1rem;font-weight:500;cursor:pointer;transition:all .3s ease;display:flex;align-items:center;justify-content:center;gap:12px;width:100%;position:relative;overflow:hidden;letter-spacing:1px}.btn.primary{background:linear-gradient(135deg,var(--primary-color),var(--primary-dark));color:#fff;box-shadow:0 10px 20px -5px #b08d8766}.btn.secondary{background:#fffc;color:var(--primary-dark);border:1px solid rgba(255,255,255,.9);box-shadow:0 4px 15px #0000000d}.btn:active{transform:scale(.97)}select{padding:12px 20px;border-radius:12px;border:1px solid rgba(255,255,255,.5);background:#fff9;color:var(--text-main);font-size:1rem;width:100%;outline:none;text-align:center;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.game-header{display:flex;justify-content:space-between;align-items:center;width:100%;height:60px;flex-shrink:0}.icon-btn{background:none;border:none;font-size:1.5rem;cursor:pointer;color:var(--text-light);transition:color .2s}.timer{font-family:Courier New,monospace;font-size:1.8rem;color:var(--primary-dark);font-weight:600;letter-spacing:-1px}.card-area{flex:1;display:flex;flex-direction:column;justify-content:center;align-items:center;width:100%;gap:20px;padding:10px 0}.card-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;width:100%;max-width:340px;margin:0 auto}.card{aspect-ratio:3/4;background:#fff;border-radius:18px;display:flex;justify-content:center;align-items:center;font-size:3.5rem;font-weight:300;color:var(--text-main);box-shadow:0 10px 25px -5px #00000014;cursor:pointer;transition:all .3s cubic-bezier(.34,1.56,.64,1);border:2px solid transparent;width:100%}.card.selected{border-color:var(--secondary-color);transform:translateY(-8px) scale(1.02);box-shadow:0 15px 30px -5px #9cadce66}.controls-area{width:100%;padding-bottom:20px;flex-shrink:0;background:#fff0}.expression-display{min-height:60px;width:100%;background:#ffffff80;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:1.8rem;font-weight:500;color:var(--text-main);margin-bottom:20px;box-shadow:0 4px 12px #0000000d}.keypad{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;width:100%;margin-bottom:15px}.key{aspect-ratio:1.25;border-radius:14px;font-size:1.5rem;border:none;background:#fff;box-shadow:0 4px 10px #0000000d;cursor:pointer;color:var(--text-main);transition:all .2s;display:flex;justify-content:center;align-items:center}.key:active{background:var(--primary-color);color:#fff}.key.op{color:var(--primary-color);font-weight:400}.key.confirm{background:var(--secondary-color);color:#fff;border-radius:20px;grid-column:span 1}.extra-controls{display:flex;justify-content:space-between;width:100%;padding-top:10px}.footer{margin-top:auto;font-size:.8rem;color:#0003;letter-spacing:1px}