:root{--deep-indigo:#1a1a2e;--nailong-yellow:#FFD93D;--antique-gold:#C9A227;--cream:#F5F5DC;--dark-overlay:rgba(26,26,46,0.95)} *{margin:0;padding:0;box-sizing:border-box} html,body{font-family:'Noto Sans SC',sans-serif;background-color:var(--deep-indigo);color:var(--cream);min-height:100vh;overflow-x:hidden} body:fullscreen{width:100vw;height:100vh} body:-webkit-full-screen{width:100vw;height:100vh} body:-moz-full-screen{width:100vw;height:100vh} .museum-bg{position:fixed;top:0;left:0;width:100%;height:100%;background-image:url('../assets/images/starry-nailong-bg.jpg');background-size:cover;background-position:center;background-repeat:no-repeat;opacity:0.3;pointer-events:none;z-index:0} .container{position:relative;z-index:1;max-width:1200px;margin:0 auto;padding:2rem;min-height:100vh;display:flex;flex-direction:column;justify-content:center;align-items:center} .btn-with-label{position:fixed;display:flex;flex-direction:column;align-items:center;gap:5px;z-index:1000} .btn-with-label .btn-label{font-size:0.7rem;color:var(--antique-gold);text-shadow:0 1px 3px rgba(0,0,0,0.8);white-space:nowrap;opacity:0.9} .fullscreen-label-wrapper{top:20px;right:20px} .audio-label-wrapper{bottom:20px;right:20px} .answer-card-label-wrapper{bottom:20px;left:20px} .fullscreen-btn{width:50px;height:50px;background:rgba(201,162,39,0.2);border:2px solid var(--antique-gold);border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1.5rem;color:var(--antique-gold);transition:all 0.3s ease} .fullscreen-btn:hover{background:rgba(201,162,39,0.4);transform:scale(1.1)} .audio-control{width:50px;height:50px;background:rgba(201,162,39,0.2);border:2px solid var(--antique-gold);border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1.2rem;color:var(--antique-gold);transition:all 0.3s ease} .audio-control:hover{background:rgba(201,162,39,0.4);transform:scale(1.1)} .audio-control.muted{opacity:0.5} .answer-card-btn{width:50px;height:50px;background:rgba(201,162,39,0.2);border:2px solid var(--antique-gold);border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1.2rem;color:var(--antique-gold);transition:all 0.3s ease} .answer-card-btn:hover{background:rgba(201,162,39,0.4);transform:scale(1.1)} .answer-card-modal{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.8);z-index:2000;justify-content:center;align-items:center} .answer-card-content{background:var(--deep-indigo);padding:2rem;border-radius:20px;border:2px solid var(--antique-gold);max-width:500px;width:90%;position:relative} .answer-card-content h3{color:var(--antique-gold);text-align:center;margin-bottom:1.5rem;font-size:1.3rem} .answer-card-close{position:absolute;top:10px;right:15px;background:none;border:none;color:var(--antique-gold);font-size:1.5rem;cursor:pointer} .answer-card-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:10px} .answer-card-cell{aspect-ratio:1;display:flex;align-items:center;justify-content:center;background:rgba(201,162,39,0.1);border:2px solid var(--antique-gold);border-radius:10px;color:var(--cream);font-weight:600;cursor:pointer;transition:all 0.3s ease;font-size:0.9rem} .answer-card-cell:hover{background:rgba(201,162,39,0.3);transform:scale(1.1)} .answer-card-cell.current{background:var(--nailong-yellow);color:var(--deep-indigo);border-color:var(--nailong-yellow);font-weight:700} .answer-card-cell.answered{background:rgba(0,200,0,0.2);border-color:#90EE90} .auth-container{position:fixed;top:20px;left:20px;z-index:1000;display:flex;align-items:center;gap:10px} .auth-btn{padding:0.5rem 1rem;background:rgba(201,162,39,0.2);border:1px solid var(--antique-gold);border-radius:20px;color:var(--antique-gold);cursor:pointer;font-size:0.85rem;transition:all 0.3s ease} .auth-btn:hover{background:rgba(201,162,39,0.4);transform:scale(1.05)} .username-display{color:var(--antique-gold);font-weight:600;font-size:0.9rem} .auth-modal{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.8);z-index:2000;justify-content:center;align-items:center} .auth-modal.show{display:flex} .auth-modal-content{background:var(--deep-indigo);padding:2rem;border-radius:20px;border:2px solid var(--antique-gold);max-width:380px;width:90%;position:relative} .auth-close{position:absolute;top:10px;right:15px;background:none;border:none;color:var(--antique-gold);font-size:1.5rem;cursor:pointer} .auth-form h3{color:var(--antique-gold);text-align:center;margin-bottom:1.5rem;font-size:1.3rem} .auth-form input{width:100%;padding:0.8rem 1rem;margin-bottom:1rem;border:1px solid var(--antique-gold);border-radius:10px;background:rgba(26,26,46,0.5);color:var(--cream);font-size:0.95rem} .auth-form input::placeholder{color:rgba(245,245,220,0.5)} .auth-submit-btn{width:100%;padding:0.8rem;background:linear-gradient(135deg,var(--nailong-yellow) 0%,var(--antique-gold) 100%);border:none;border-radius:10px;color:var(--deep-indigo);font-weight:700;cursor:pointer;transition:all 0.3s ease;font-size:1rem} .auth-submit-btn:hover{transform:translateY(-2px);box-shadow:0 4px 15px rgba(255,217,61,0.3)} .auth-error,.auth-success{text-align:center;margin-bottom:1rem;min-height:1.2rem;font-size:0.9rem} .auth-error{color:#FFB6C1} .auth-success{color:#90EE90} .auth-form .divider{text-align:center;margin:1rem 0;color:rgba(245,245,220,0.5);position:relative} .auth-form .divider::before,.auth-form .divider::after{content:'';position:absolute;top:50%;width:35%;height:1px;background:rgba(201,162,39,0.3)} .auth-form .divider::before{left:0} .auth-form .divider::after{right:0} .wechat-btn{width:100%;padding:0.7rem;background:#07C160;border:none;border-radius:10px;color:white;cursor:not-allowed;opacity:0.6;font-size:0.9rem} .auth-switch{text-align:center;margin-top:1rem;color:rgba(245,245,220,0.8);font-size:0.9rem} .auth-switch a{color:var(--antique-gold);text-decoration:none;font-weight:600} .hero-section{text-align:center;animation:fadeIn 1s ease-out} @keyframes fadeIn{from{opacity:0;transform:translateY(20px)} to{opacity:1;transform:translateY(0)} } .nailong-container{position:relative;display:inline-block;margin-bottom:2rem} .nailong-img{width:280px;height:280px;object-fit:cover;border-radius:50%;border:4px solid var(--antique-gold);box-shadow:0 0 40px rgba(201,162,39,0.3),0 0 80px rgba(201,162,39,0.1);animation:breathe 3s ease-in-out infinite} @keyframes breathe{0%,100%{transform:scale(1) translateY(0)} 50%{transform:scale(1.02) translateY(-5px)} } .glow-effect{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:300px;height:300px;border-radius:50%;background:radial-gradient(circle,rgba(255,217,61,0.2) 0%,transparent 70%);animation:pulse 3s ease-in-out infinite;z-index:-1} @keyframes pulse{0%,100%{opacity:0.5;transform:translate(-50%,-50%) scale(1)} 50%{opacity:0.8;transform:translate(-50%,-50%) scale(1.1)} } .museum-title{margin-bottom:1.5rem} .title-main{display:block;font-family:'Playfair Display',serif;font-size:3rem;font-weight:700;color:var(--antique-gold);text-shadow:2px 2px 4px rgba(0,0,0,0.5);letter-spacing:0.1em} .title-sub{display:block;font-family:'Playfair Display',serif;font-size:1rem;color:var(--nailong-yellow);letter-spacing:0.3em;text-transform:uppercase;margin-top:0.5rem;opacity:0.8} .museum-desc{font-size:1.1rem;line-height:2;color:rgba(245,245,220,0.8);margin-bottom:2.5rem;max-width:500px} .start-btn{position:relative;padding:1rem 3rem;font-size:1.2rem;font-family:'Noto Sans SC',sans-serif;font-weight:500;color:var(--deep-indigo);background:linear-gradient(135deg,var(--nailong-yellow) 0%,var(--antique-gold) 100%);border:none;border-radius:50px;cursor:pointer;overflow:hidden;transition:all 0.3s ease;box-shadow:0 4px 15px rgba(255,217,61,0.3),0 0 30px rgba(201,162,39,0.2)} .start-btn:hover{transform:translateY(-3px) scale(1.05);box-shadow:0 8px 25px rgba(255,217,61,0.4),0 0 50px rgba(201,162,39,0.3)} .btn-shine{position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient( 90deg,transparent,rgba(255,255,255,0.3),transparent );transition:left 0.5s ease} .start-btn:hover .btn-shine{left:100%} .quiz-container{width:100%;max-width:800px;animation:slideIn 0.5s ease-out} @keyframes slideIn{from{opacity:0;transform:translateX(20px)} to{opacity:1;transform:translateX(0)} } .progress-bar{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem;padding:1rem 1.5rem;background:rgba(201,162,39,0.1);border:1px solid rgba(201,162,39,0.3);border-radius:10px} .progress-text{font-family:'Playfair Display',serif;font-size:1.2rem;color:var(--antique-gold)} .progress-score{font-size:0.9rem;color:var(--nailong-yellow)} .painting-frame{position:relative;margin-bottom:2rem;padding:15px;background:linear-gradient(135deg,#2a2a3e 0%,#1a1a2e 100%);border:3px solid var(--antique-gold);border-radius:5px;box-shadow:0 10px 40px rgba(0,0,0,0.5),inset 0 0 20px rgba(201,162,39,0.1)} .painting-frame::before{content:'';position:absolute;top:5px;left:5px;right:5px;bottom:5px;border:1px solid rgba(201,162,39,0.3);pointer-events:none} .painting-img{width:100%;max-height:400px;object-fit:contain;display:block;background:#000;clip-path:inset(3% 3% 3% 3%)} .question-text{font-size:1.3rem;text-align:center;margin-bottom:1.5rem;color:var(--cream)} .options-container{display:grid;gap:1rem;margin-bottom:2rem} .option-label{display:flex;align-items:center;padding:1rem 1.5rem;background:rgba(255,255,255,0.05);border:2px solid rgba(201,162,39,0.3);border-radius:10px;cursor:pointer;transition:all 0.3s ease} .option-label:hover{background:rgba(201,162,39,0.1);border-color:var(--antique-gold)} .option-label input[type="radio"]{display:none} .option-label input[type="radio"]:checked + .option-text{color:var(--nailong-yellow)} .option-label:has(input[type="radio"]:checked){background:rgba(255,217,61,0.1);border-color:var(--nailong-yellow);box-shadow:0 0 20px rgba(255,217,61,0.2)} .option-text{font-size:1.1rem;margin-left:1rem} .option-marker{width:24px;height:24px;border:2px solid var(--antique-gold);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:0.8rem;color:var(--antique-gold);flex-shrink:0} .submit-btn{width:100%;padding:1rem;font-size:1.2rem;font-family:'Noto Sans SC',sans-serif;font-weight:500;color:var(--deep-indigo);background:linear-gradient(135deg,var(--nailong-yellow) 0%,var(--antique-gold) 100%);border:none;border-radius:10px;cursor:pointer;transition:all 0.3s ease} .submit-btn:hover{transform:translateY(-2px);box-shadow:0 5px 20px rgba(255,217,61,0.3)} .submit-btn:disabled{opacity:0.5;cursor:not-allowed;transform:none} .feedback-container{width:100%;max-width:600px;text-align:center;animation:fadeIn 0.5s ease-out} .video-container{margin-bottom:2rem;border-radius:10px;overflow:hidden;box-shadow:0 10px 40px rgba(0,0,0,0.5)} .video-container video{width:100%;max-height:300px;display:block} .explanation-section{display:flex;align-items:flex-end;gap:1rem;margin-bottom:2rem;opacity:0;transition:opacity 0.5s ease} .thinking-nailong{width:120px;height:120px;object-fit:cover;border-radius:50%;border:3px solid var(--antique-gold);flex-shrink:0;clip-path:inset(3% 3% 3% 3%)} .speech-bubble{flex:1;position:relative;background:rgba(255,255,255,0.95);color:var(--deep-indigo);padding:1.5rem;border-radius:20px;text-align:left;box-shadow:0 5px 20px rgba(0,0,0,0.2)} .speech-bubble::before{content:'';position:absolute;bottom:30px;left:-15px;width:0;height:0;border-top:15px solid transparent;border-bottom:15px solid transparent;border-right:15px solid rgba(255,255,255,0.95)} .explanation-title{font-family:'Playfair Display',serif;font-size:1.2rem;color:var(--antique-gold);margin-bottom:0.5rem} .explanation-text{font-size:1rem;line-height:1.6} .next-btn{padding:1rem 3rem;font-size:1.1rem;font-family:'Noto Sans SC',sans-serif;font-weight:500;color:var(--deep-indigo);background:linear-gradient(135deg,var(--nailong-yellow) 0%,var(--antique-gold) 100%);border:none;border-radius:50px;cursor:pointer;transition:all 0.3s ease} .next-btn:hover{transform:translateY(-3px);box-shadow:0 8px 25px rgba(255,217,61,0.4)} .complete-container{text-align:center;animation:fadeIn 1s ease-out} .pass-video{width:100%;max-width:600px;margin-bottom:2rem;border-radius:10px;overflow:hidden;box-shadow:0 10px 40px rgba(0,0,0,0.5)} .final-message{font-family:'Playfair Display',serif;font-size:2.5rem;color:var(--nailong-yellow);text-shadow:0 0 30px rgba(255,217,61,0.5);margin-bottom:1rem;animation:glow 2s ease-in-out infinite;opacity:0;transition:opacity 1s ease} @keyframes glow{0%,100%{text-shadow:0 0 30px rgba(255,217,61,0.5)} 50%{text-shadow:0 0 50px rgba(255,217,61,0.8),0 0 80px rgba(255,217,61,0.4)} } .final-quote{font-size:1.2rem;color:var(--antique-gold);margin-bottom:2rem} .restart-btn{padding:1rem 2.5rem;font-size:1.1rem;font-family:'Noto Sans SC',sans-serif;font-weight:500;color:var(--cream);background:transparent;border:2px solid var(--antique-gold);border-radius:50px;cursor:pointer;transition:all 0.3s ease} .restart-btn:hover{background:var(--antique-gold);color:var(--deep-indigo)} @media (max-width:768px){.title-main{font-size:2rem} .nailong-img{width:200px;height:200px} .explanation-section{flex-direction:column;align-items:center} .speech-bubble::before{display:none} .final-message{font-size:1.8rem} .fullscreen-btn,.audio-control{width:40px;height:40px;font-size:1rem} } :fullscreen .container{max-width:100%;padding:1rem} :fullscreen .painting-img{max-height:50vh} .select-container{text-align:center;padding:2rem} .select-title{font-family:'Playfair Display',serif;font-size:2.5rem;color:var(--antique-gold);margin-bottom:1rem} .select-desc{color:rgba(245,245,220,0.8);margin-bottom:3rem;font-size:1.1rem} .quiz-options{display:flex;justify-content:center;gap:2rem;flex-wrap:wrap;margin-bottom:3rem} .quiz-option-btn{width:150px;height:150px;background:rgba(201,162,39,0.1);border:2px solid var(--antique-gold);border-radius:20px;cursor:pointer;transition:all 0.3s ease;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:0.5rem} .quiz-option-btn:hover{background:rgba(201,162,39,0.3);transform:translateY(-5px);box-shadow:0 10px 30px rgba(201,162,39,0.3)} .option-number{font-size:3rem;font-weight:700;color:var(--nailong-yellow);font-family:'Playfair Display',serif} .option-label{font-size:0.9rem;color:var(--cream)} .back-home-btn{padding:0.8rem 2rem;background:transparent;border:1px solid var(--antique-gold);border-radius:25px;color:var(--antique-gold);cursor:pointer;transition:all 0.3s ease} .back-home-btn:hover{background:var(--antique-gold);color:var(--deep-indigo)} .disclaimer-modal{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.9);z-index:3000;display:flex;justify-content:center;align-items:center} .disclaimer-modal.hidden{display:none} .disclaimer-content{background:var(--deep-indigo);padding:2.5rem;border-radius:20px;border:2px solid var(--antique-gold);max-width:500px;width:90%;text-align:center} .disclaimer-content h2{color:var(--antique-gold);margin-bottom:1.5rem;font-size:1.5rem} .disclaimer-text{text-align:left;margin-bottom:2rem;line-height:1.8} .disclaimer-text p{color:var(--cream);margin-bottom:1rem;font-size:0.95rem} .disclaimer-text a{color:var(--nailong-yellow);text-decoration:none} .disclaimer-text a:hover{text-decoration:underline} .disclaimer-btn{padding:1rem 3rem;background:linear-gradient(135deg,var(--nailong-yellow) 0%,var(--antique-gold) 100%);border:none;border-radius:30px;color:var(--deep-indigo);font-size:1.1rem;font-weight:700;cursor:pointer;transition:all 0.3s ease} .disclaimer-btn:hover{transform:scale(1.05);box-shadow:0 5px 20px rgba(255,217,61,0.4)} .original-painting-section{margin-top:2rem;padding:1.5rem;background:rgba(26,26,46,0.6);border-radius:15px;border:1px solid rgba(201,162,39,0.3)} .original-title{color:var(--antique-gold);text-align:center;margin-bottom:1rem;font-size:1.1rem} .painting-comparison{display:flex;justify-content:center;gap:2rem;flex-wrap:wrap} .painting-item{text-align:center} .comparison-img{width:200px;height:200px;object-fit:cover;border-radius:10px;border:2px solid var(--antique-gold);box-shadow:0 5px 20px rgba(0,0,0,0.3)} .painting-label{margin-top:0.5rem;color:var(--cream);font-size:0.9rem} .auth-loading{position:relative;color:transparent !important} .auth-loading::after{content:'';position:absolute;width:20px;height:20px;top:50%;left:50%;margin:-10px 0 0 -10px;border:2px solid var(--deep-indigo);border-top-color:transparent;border-radius:50%;animation:spin 0.8s linear infinite} @keyframes spin{to{transform:rotate(360deg)} } .submit-label-wrapper{bottom:20px;left:20px} .submit-corner-btn{width:50px;height:50px;background:rgba(201,162,39,0.2);border:2px solid var(--antique-gold);border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1.2rem;color:var(--antique-gold);transition:all 0.3s ease} .submit-corner-btn:hover{background:rgba(201,162,39,0.4);transform:scale(1.1)} .submission-modal{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.8);z-index:2000;justify-content:center;align-items:center} .submission-modal-content{background:var(--deep-indigo);padding:2rem;border-radius:20px;border:2px solid var(--antique-gold);max-width:450px;width:90%;position:relative;max-height:90vh;overflow-y:auto} .submission-close{position:absolute;top:10px;right:15px;background:none;border:none;color:var(--antique-gold);font-size:1.5rem;cursor:pointer} .submission-modal-content h3{color:var(--antique-gold);text-align:center;margin-bottom:0.5rem} .submission-desc{text-align:center;color:rgba(245,245,220,0.7);margin-bottom:1.5rem;font-size:0.9rem} .upload-area{border:2px dashed var(--antique-gold);border-radius:15px;padding:2rem;text-align:center;margin-bottom:1.5rem;cursor:pointer;transition:all 0.3s ease;position:relative} .upload-area:hover{background:rgba(201,162,39,0.1)} .upload-icon{font-size:2.5rem;display:block;margin-bottom:0.5rem} .upload-hint{font-size:0.8rem;color:rgba(245,245,220,0.5)} .preview-image{max-width:100%;max-height:200px;border-radius:10px} .remove-image{position:absolute;top:10px;right:10px;width:30px;height:30px;background:rgba(255,0,0,0.7);border:none;border-radius:50%;color:white;cursor:pointer;font-size:1.2rem} .submission-modal-content .form-group{margin-bottom:1rem} .submission-modal-content .form-group label{display:block;margin-bottom:0.3rem;color:var(--antique-gold);font-size:0.9rem;font-weight:600} .submission-modal-content .form-group input{width:100%;padding:0.7rem 1rem;border:1px solid var(--antique-gold);border-radius:10px;background:rgba(26,26,46,0.5);color:var(--cream);font-size:0.95rem} .submission-modal-content .form-group input::placeholder{color:rgba(245,245,220,0.4)} .submit-artwork-btn{width:100%;padding:0.8rem;font-size:1rem;font-weight:700;color:var(--deep-indigo);background:linear-gradient(135deg,var(--nailong-yellow) 0%,var(--antique-gold) 100%);border:none;border-radius:10px;cursor:pointer;transition:all 0.3s ease;margin-top:0.5rem} .submit-artwork-btn:disabled{opacity:0.5;cursor:not-allowed} .submit-artwork-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 4px 15px rgba(255,217,61,0.4)} .submit-message{margin-top:1rem;padding:0.8rem;border-radius:10px;text-align:center;font-size:0.9rem} .submit-message.success{background:rgba(0,255,0,0.2);color:#90EE90} .submit-message.error{background:rgba(255,0,0,0.2);color:#FFB6C1} img[loading="lazy"]{opacity:0;transition:opacity 0.3s ease} img[loading="lazy"].loaded{opacity:1}