:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}.card{padding:2em}#app{max-width:1280px;margin:0 auto;padding:2rem;text-align:center}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;line-height:1.6;color:#333;background-color:#f5f5f5}.app{max-width:100vw;min-height:100vh;display:flex;flex-direction:column}.header{background-color:#4caf50;color:#fff;padding:1rem;box-shadow:0 2px 4px #0000001a}.header-home{text-align:center}.slogan{font-size:1.2rem;margin-bottom:1rem;font-weight:600}.search-container{display:flex;max-width:600px;margin:0 auto}.search-input{flex:1;padding:.8rem;border:none;border-radius:4px 0 0 4px;font-size:1rem}.search-button{background-color:#388e3c;border:none;padding:.8rem 1rem;border-radius:0 4px 4px 0;cursor:pointer;font-size:1rem}.header-scene,.header-other{display:flex;align-items:center;gap:1rem}.back-button{background:none;border:none;color:#fff;font-size:1rem;cursor:pointer}.scene-title,.page-title{flex:1;font-size:1.2rem;font-weight:600}.pinyin-toggle{background-color:#fff3;border:none;color:#fff;padding:.4rem .8rem;border-radius:4px;cursor:pointer;font-size:.9rem}.main{flex:1;padding:1rem;overflow-y:auto}.section-title{font-size:1.3rem;margin-bottom:1rem;color:#333}.emergency-section{margin-bottom:2rem}.emergency-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:1rem}.emergency-card{background-color:#ff5722;color:#fff;padding:1.5rem;border-radius:8px;text-align:center;cursor:pointer;transition:transform .2s}.emergency-card:hover{transform:translateY(-2px)}.emergency-icon{font-size:2rem;margin-bottom:.5rem}.emergency-name{font-size:.9rem;font-weight:600}.scenes-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1rem}.scene-card{background-color:#fff;padding:1.5rem;border-radius:8px;text-align:center;cursor:pointer;box-shadow:0 2px 4px #0000001a;transition:transform .2s,box-shadow .2s}.scene-card:hover{transform:translateY(-2px);box-shadow:0 4px 8px #00000026}.scene-icon{font-size:2.5rem;margin-bottom:.5rem}.scene-name{font-size:1rem;font-weight:500;color:#333}.phrases-list{display:flex;flex-direction:column;gap:1rem}.phrase-card{background-color:#fff;padding:1.2rem;border-radius:8px;box-shadow:0 2px 4px #0000001a;display:flex;justify-content:space-between;align-items:flex-start;cursor:pointer;transition:background-color .2s}.phrase-card:hover{background-color:#f9f9f9}.phrase-content{flex:1}.phrase-chinese{font-size:1.3rem;font-weight:600;margin-bottom:.3rem;color:#333}.phrase-pinyin{font-size:1rem;color:#666;margin-bottom:.3rem}.phrase-english{font-size:1rem;color:#888}.phrase-scene{font-size:.8rem;color:#4caf50;margin-bottom:.3rem;font-weight:500}.phrase-actions{display:flex;gap:.5rem}.action-button{background:none;border:none;font-size:1.2rem;cursor:pointer;padding:.5rem;border-radius:4px;transition:background-color .2s}.action-button:hover{background-color:#f0f0f0}.empty-state{text-align:center;padding:3rem 1rem;color:#666}.history-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.clear-button{background-color:#f44336;color:#fff;border:none;padding:.4rem .8rem;border-radius:4px;cursor:pointer;font-size:.9rem}.footer{background-color:#fff;padding:1rem;box-shadow:0 -2px 4px #0000001a;display:flex;justify-content:space-around}.nav-button{background:none;border:none;padding:.8rem 1.2rem;border-radius:4px;cursor:pointer;font-size:1rem;transition:background-color .2s}.nav-button.active{background-color:#e8f5e8;color:#4caf50;font-weight:600}@media(max-width:768px){.emergency-grid{grid-template-columns:repeat(3,1fr)}.scenes-grid{grid-template-columns:repeat(2,1fr)}.phrase-card{flex-direction:column;align-items:flex-start;gap:1rem}.phrase-actions{align-self:flex-end}}@media(max-width:480px){.emergency-grid{grid-template-columns:repeat(3,1fr)}.scenes-grid{grid-template-columns:repeat(2,1fr)}.scene-card{padding:1rem}.scene-icon{font-size:2rem}.scene-name{font-size:.9rem}}