body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; margin: 0; background: #f9f9f9; color: #333; }
        a { text-decoration: none; color: inherit; }
        
        nav { background: white; box-shadow: 0 1px 5px rgba(0,0,0,0.05); padding: 15px 0; position: sticky; top: 0; z-index: 1000; }
        .nav-container { max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; padding: 0 20px; }
        .nav-links a { margin-left: 20px; font-weight: 500; color: #555; transition: color 0.2s; }
        .nav-links a.active, .nav-links a:hover { color: #007AFF; }
        .logo-link img { height: 50px; width: auto; }
        
        .hero { text-align: center; padding: 60px 20px; background: #fff; margin-bottom: 30px; }
        .hero h1 { margin: 0; font-size: 2.5rem; }
        .hero p { color: #777; margin-top: 10px; }
        
        .album-header { text-align: center; padding: 30px 20px; }
        .back-link { display: inline-block; margin-bottom: 10px; color: #007AFF; font-size: 0.9rem; }
        
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        .album-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 30px; margin-bottom: 60px; }
        .album-card { background: white; border-radius: 12px; overflow: hidden; box-shadow: 0 2px 10px rgba(0,0,0,0.05); transition: transform 0.2s; display: block; content-visibility: auto; contain-intrinsic-size: 300px; }
        .album-card:hover { transform: translateY(-5px); }
        .album-img { aspect-ratio: 16/10; overflow: hidden; background: #eee; }
        .album-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
        .album-card:hover .album-img img { transform: scale(1.05); }
        .album-card h3 { padding: 15px 20px 5px; margin: 0; font-size: 1.1rem; }
        .view-btn { padding: 0 20px 20px; color: #007AFF; font-weight: 600; font-size: 0.9rem; margin-top: 5px; }
        
        .gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 10px; padding: 20px; max-width: 1400px; margin: 0 auto; }
        .photo-card { background: #fff; border-radius: 6px; overflow: hidden; cursor: pointer; aspect-ratio: 1; position: relative; animation: fadeIn 0.5s ease; }
        .photo-card img { width: 100%; height: 100%; object-fit: cover; display: block; }
        @keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

        .contact-container { max-width: 600px; background: white; padding: 40px; border-radius: 12px; margin-top: 30px; box-shadow: 0 2px 10px rgba(0,0,0,0.05); }
        .contact-form label { display: block; margin-top: 15px; font-weight: 600; margin-bottom: 5px; }
        .contact-form input, .contact-form textarea { width: 100%; padding: 12px; border: 1px solid #ddd; border-radius: 6px; font-size: 16px; box-sizing: border-box; }
        .btn-submit { margin-top: 20px; background: #007AFF; color: white; border: none; padding: 12px 25px; border-radius: 6px; font-size: 16px; cursor: pointer; width: 100%; }
        
        #lightbox { 
            display: none; 
            position: fixed; 
            inset: 0; 
            background: rgba(0,0,0,0.95); 
            z-index: 2000; 
            justify-content: center;
            align-items: center;
        }
        
        #lb-content-wrapper {
            position: relative;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            max-width: 90vw;
            max-height: 95vh;
        }

        #lb-img { 
            max-width: 100%; 
            max-height: 80vh; 
            border-radius: 4px; 
            object-fit: contain; 
        }
        
        #lb-ctrl { 
            margin-top: 15px; 
            display: flex; 
            gap: 10px; 
            justify-content: center; 
            flex-wrap: wrap; 
        }
        
        .btn { 
            padding: 10px 16px; 
            color: white; 
            text-decoration: none; 
            border-radius: 6px; 
            border: none; 
            cursor: pointer; 
            font-weight: 600; 
            font-size: 14px;
            display: flex;
            align-items: center;
            transition: opacity 0.2s;
        }
        .btn:hover { opacity: 0.9; }
        .btn-icon { width: 18px; height: 18px; fill: currentColor; margin-right: 6px; }

        .btn-dl { background: #333; }
        .btn-fb { background: #1877F2; }
        .btn-li { background: #0077b5; }
        .btn-close { background: #555; margin-left: 10px; }
        
        .nav-btn { 
            position: fixed; 
            top: 50%; 
            transform: translateY(-50%); 
            background: transparent; 
            color: rgba(255,255,255,0.7); 
            border: none; 
            font-size: 60px; 
            padding: 20px; 
            cursor: pointer; 
            z-index: 2001; 
            transition: color 0.2s;
        }
        .nav-btn:hover { color: white; }
        .prev { left: 10px; } 
        .next { right: 10px; }
        
        footer { text-align: center; padding: 40px; color: #999; font-size: 0.9rem; margin-top: 40px; border-top: 1px solid #eee; }
        
        @media(max-width: 600px) { 
            .nav-container { flex-direction: column; } 
            .nav-links { margin-top: 15px; } 
            .gallery { grid-template-columns: 1fr 1fr; gap: 8px; } 
            #lb-ctrl { gap: 5px; margin-bottom: 20px; } 
            .btn { padding: 8px 12px; font-size: 12px; } 
            .btn-icon { width: 14px; height: 14px; margin-right: 4px; }
            .nav-btn { font-size: 40px; padding: 5px; }
            #lb-img { max-height: 60vh; }
        }