:root {
            --cyan: #00f6ff;
            --violet: #8b8dff;
            --bg: #000;
            --studio-white: #ffffff;
            --studio-grey: rgba(255, 255, 255, 0.75);
            --mono: 'JetBrains Mono', monospace;
            --safe-area: 6%;
        }

        /* --- GLOBAL RESET & SHARPNESS --- */
        * { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

        body {
            background: var(--bg);
            font-family: 'Space Grotesk', sans-serif;
            color: var(--studio-white);
            overflow-x: hidden;
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

        /* --- NAVIGATION --- */
        nav { 
            position: fixed; top: 0; width: 100%; padding: 30px var(--safe-area); 
            display: flex; justify-content: space-between; align-items: center; 
            z-index: 10000; background: rgba(0,0,0,0.85);
        }
        .logo-img { height: 55px; width: auto; transition: 0.3s; }
        .nav-links { display: flex; gap: 40px; list-style: none; }
        .nav-links a { 
            text-decoration: none; color: #fff; font-size: 0.9rem; letter-spacing: 2px; 
            text-transform: uppercase; font-family: var(--mono); opacity: 0.8; transition: 0.3s;
            position: relative; padding: 12px 0;
        }
        .nav-links a:hover, .nav-links a.active { opacity: 1; color: var(--cyan); text-shadow: 0 0 10px var(--cyan); }
        .nav-links a::after { 
            content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px; 
            background: var(--cyan); transition: 0.3s; box-shadow: 0 0 8px var(--cyan); 
        }
        .nav-links a:hover::after { width: 100%; }

        .menu-toggle { display: none; flex-direction: column; gap: 6px; cursor: pointer; z-index: 10002; padding: 10px; }
        .menu-toggle span { width: 28px; height: 2px; background: var(--cyan); transition: 0.3s; }

        /* --- CONTENT AREA --- */
        .viewport-container {
            position: relative; z-index: 5;
            padding: 140px var(--safe-area) 60px;
            display: flex; flex-direction: column; align-items: center;
        }

        .product-hero {
            display: grid; grid-template-columns: 1fr; gap: 40px;
            max-width: 1200px; width: 100%; margin-bottom: 80px;
        }

        .image-area { 
            position: relative; 
            max-width: 500px; margin: 0 auto; 
            display: flex; justify-content: center; align-items: center;
        }

        .image-area::before {
            content: '';
            position: absolute;
            width: 80%;
            height: 80%;
            background: radial-gradient(circle, rgba(0, 246, 255, 0.2) 0%, rgba(139, 141, 255, 0.1) 50%, transparent 70%);
            filter: blur(40px);
            z-index: -1;
            animation: auraPulse 4s ease-in-out infinite;
        }

        .image-area img { 
            width: 100%; 
            display: block; 
            border-radius: 30px; 
            filter: drop-shadow(0 0 20px rgba(0, 246, 255, 0.2));
            animation: floatBook 6s ease-in-out infinite;
        }

        @keyframes auraPulse {
            0%, 100% { transform: scale(1); opacity: 0.5; }
            50% { transform: scale(1.2); opacity: 0.8; }
        }

        @keyframes floatBook {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-20px); }
        }

        .product-details { text-align: left; }

        .gift-tag {
            font-family: var(--mono); font-size: 0.65rem; color: var(--studio-white);
            background: rgba(255,255,255,0.08); padding: 10px 20px;
            display: inline-block; margin-bottom: 25px; letter-spacing: 3px;
            border-left: 3px solid var(--cyan);
        }

        .product-details h2 { 
            font-size: clamp(1.8rem, 5vw, 3rem); 
            font-weight: 300; letter-spacing: -1px; line-height: 1.1; margin-bottom: 25px; 
        }

        .product-description p { font-size: 1.05rem; line-height: 1.8; color: var(--studio-grey); margin-bottom: 25px; }

        .feature-grid {
            display: grid; grid-template-columns: repeat(2, 1fr); gap: 15px;
            margin: 30px 0; list-style: none;
        }

        .feature-grid li {
    font-family: var(--mono);
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    padding: 22px 18px;
    border: 1px solid rgba(255,255,255,0.12);
    color: var(--studio-white);
    text-align: center;
    background: linear-gradient(
        145deg,
        rgba(255,255,255,0.04),
        rgba(0,0,0,0.2)
    );
    position: relative;
    overflow: hidden;
    transition: transform 0.4s ease, box-shadow 0.4s ease, color 0.4s ease;
}

/* soft glow sweep */
.feature-grid li::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(
        120deg,
        transparent 30%,
        rgba(0, 246, 255, 0.15),
        transparent 70%
    );
    opacity: 0;
    transition: opacity 0.4s ease;
}

.feature-grid li:hover {
    color: var(--cyan);
    transform: translateY(-8px);
    box-shadow: 0 12px 28px rgba(0, 246, 255, 0.18);
    border-color: var(--cyan);
}

.feature-grid li:hover::before {
    opacity: 1;
}


        .feature-grid li:hover {
            background: rgba(0, 246, 255, 0.08);
            border-color: var(--cyan);
            color: var(--cyan);
            transform: translateY(-8px);
            box-shadow: 0 10px 20px rgba(0, 246, 255, 0.15);
        }
/* --- Sharp outline enhancement (no layout change) --- */
.feature-grid li {
    outline: 1px solid rgba(0, 246, 255, 0.35);
    outline-offset: -1px;
}

/* subtle emphasis for touch devices */
@media (hover: none) {
    .feature-grid li {
        outline-color: rgba(0, 246, 255, 0.55);
    }
}

        .cta-row { width: 100%; margin-top: 20px; }

        .studio-btn {
    display: block;
    width: 100%;
    max-width: 360px;
    padding: 22px 28px;
    text-decoration: none;
    font-family: var(--mono);
    font-size: 0.75rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    text-align: center;
    color: #000;
    background: linear-gradient(135deg, #00f6ff, #8b8dff);
    border: none;
    border-radius: 40px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 0 25px rgba(0, 246, 255, 0.4);
    transition: transform 0.35s ease, box-shadow 0.35s ease;
}

/* animated light sweep */
.studio-btn::after {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 60%;
    height: 100%;
    background: linear-gradient(
        120deg,
        transparent,
        rgba(255,255,255,0.6),
        transparent
    );
    transition: left 0.6s ease;
}

.studio-btn:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 40px rgba(0, 246, 255, 0.6);
}

.studio-btn:hover::after {
    left: 140%;
}

        .premium-inquiry-vessel {
            width: 100%; max-width: 1100px; margin-top: 60px;
            padding: 50px 40px; background: linear-gradient(145deg, rgba(255,255,255,0.03) 0%, rgba(0,0,0,0) 100%);
            border: 1px solid rgba(255,255,255,0.1);
            display: flex; flex-direction: column; gap: 30px;
            position: relative; overflow: hidden;
        }
        .premium-inquiry-vessel::before {
            content: ''; position: absolute; top: 0; left: 0; width: 4px; height: 100%; background: var(--cyan);
        }
        
        .inquiry-content p { font-size: 0.95rem; color: var(--studio-grey); max-width: 600px; }
        
        /* --- NON-LINK EMAIL EFFECT (FIXED FOR SINGLE LINE) --- */
        .premium-email-display {
            font-family: var(--mono);
            color: var(--studio-white);
            /* Slightly adjusted clamp for better mobile fit */
            font-size: clamp(0.6rem, 3.5vw, 1.1rem);
            letter-spacing: 1px;
            display: inline-block;
            padding: 5px 0;
            position: relative;
            cursor: default;
            white-space: nowrap; /* FORCES SINGLE LINE */
            animation: emailGlow 3s ease-in-out infinite;
        }

        @keyframes emailGlow {
            0%, 100% { text-shadow: 0 0 0px transparent; opacity: 0.8; }
            50% { text-shadow: 0 0 15px var(--cyan); opacity: 1; color: var(--cyan); }
        }

        .campaign-vessel { width: 100%; max-width: 1100px; padding: 100px 0; text-align: center; border-top: 1px solid rgba(255,255,255,0.1); }
        .campaign-title { font-size: clamp(2.2rem, 8vw, 6rem); font-weight: 500; line-height: 0.9; margin-bottom: 50px; }
        .campaign-title span { display: block; font-weight: 300; opacity: 1; color: #ffffff; font-style: italic; }

        footer { padding: 80px var(--safe-area); text-align: center; border-top: 1px solid rgba(255,255,255,0.1); position: relative; z-index: 10; background: #000; }
        .footer-logo { height: 45px; margin-bottom: 20px; }
        .copyright { font-family: var(--mono); font-size: 0.7rem; opacity: 0.5; letter-spacing: 2px; }

        @media (min-width: 769px) {
            .product-hero { grid-template-columns: 1fr 1.2fr; gap: 80px; align-items: center; }
            .feature-grid { grid-template-columns: repeat(3, 1fr); }
            .premium-inquiry-vessel { flex-direction: row; align-items: center; justify-content: space-between; }
            .inquiry-content { flex: 1; }
            .inquiry-action { text-align: right; }
        }

        @media (max-width: 992px) {
            .menu-toggle { display: flex; }
            .nav-links { position: fixed; top: 0; right: -100%; height: 100vh; width: 100%; background: #000; flex-direction: column; justify-content: center; align-items: center; transition: 0.5s; }
            .nav-links.active { right: 0; }
        }