/* Base font and color settings */
        body {
            font-family: 'Noto Sans KR', sans-serif;
            background-color: #FFFFFF;
            color: #333333;
            line-height: 1.6;
            padding-bottom: 0;
            transition: background-color 0.5s ease, color 0.5s ease;
        }

        /* Header style */
        .header {
            background-color: transparent;
            color: #333333;
            padding: 20px 40px;
            box-shadow: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            transition: background-color 0.3s ease, box-shadow 0.3s ease, color 0.3s ease;
        }

        /* Header style change on scroll */
        .header.scrolled {
            background-color: #1E3A8A; /* Dark blue header on scroll */
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
            color: #FACC15; /* Yellow text on scrolled header */
        }
        
        .header.scrolled .site-logo-text {
            color: #FACC15; /* Yellow for EVE logo on scrolled header */
        }

        .site-logo {
            max-height: 50px;
            width: auto;
        }

        /* Desktop navigation style */
        .main-nav {
            display: none;
            transition: opacity 0.3s ease, transform 0.3s ease;
        }

        .main-nav ul {
            display: flex;
            gap: 30px;
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .main-nav .nav-link {
            display: block;
            padding: 5px 0;
            color: #333333;
            font-weight: 600;
            position: relative;
            text-decoration: none;
            white-space: nowrap;
            transition: color 0.3s ease;
        }

        .main-nav .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -5px;
            width: 100%;
            height: 3px;
            background-color: #FACC15; /* Yellow underline */
            border-radius: 3px;
            transform: scaleX(0);
            transition: transform 0.3s ease;
        }

        .main-nav .nav-link:hover::after,
        .main-nav .active::after {
            transform: scaleX(1);
        }

        .header.scrolled .main-nav .nav-link {
            color: #FACC15; /* Yellow text on scrolled header */
        }
        
        .header.scrolled .main-nav .nav-link:hover::after {
            background-color: #E53E3E; /* Red underline on hover for scrolled header */
        }

        /* Hamburger menu button */
        .hamburger-button {
            display: flex;
            flex-direction: column;
            justify-content: space-around;
            width: 30px;
            height: 25px;
            background: transparent;
            border: none;
            cursor: pointer;
            padding: 0;
            z-index: 1001;
            transition: background-color 0.3s ease;
        }

        .hamburger-button div {
            width: 100%;
            height: 3px;
            background-color: #333333;
            border-radius: 2px;
            transition: all 0.3s linear;
            transform-origin: 1px;
        }

        .hamburger-button.open div:nth-child(1) {
            transform: rotate(45deg);
        }

        .hamburger-button.open div:nth-child(2) {
            opacity: 0;
            transform: translateX(-20px);
        }

        .hamburger-button.open div:nth-child(3) {
            transform: rotate(-45deg);
        }

        /* Hamburger menu color change on scroll */
        .header.scrolled .hamburger-button div {
            background-color: #FACC15; /* Yellow hamburger lines on scrolled header */
        }

        /* Mobile navigation overlay */
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.5);
            z-index: 1000;
        }

        /* Mobile navigation menu */
        .mobile-nav {
            position: fixed;
            top: 0;
            right: -280px;
            width: 250px;
            height: 100%;
            background-color: #1E3A8A; /* Dark blue mobile nav background */
            box-shadow: -2px 0 10px rgba(0, 0, 0, 0.2);
            transition: right 0.3s ease-in-out;
            z-index: 1001;
            display: flex;
            flex-direction: column;
            padding: 0;
            color: white;
        }

        .mobile-nav.open {
            right: 0;
        }

        .mobile-nav-header {
            padding: 20px;
            background-color: #1E3A8A;
            color: white;
            font-size: 1.5rem;
            font-weight: 700;
            text-align: center;
        }

        .mobile-nav ul {
            flex-direction: column;
            padding: 20px;
            list-style: none;
        }

        .mobile-nav .nav-link {
            padding: 15px 10px;
            border-bottom: 1px solid #3A82E3;
            color: white;
            font-weight: 500;
            text-decoration: none;
            transition: all 0.2s ease-in-out;
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }

        .mobile-nav .active {
            background-color: #FACC15; /* Yellow active link */
            color: #1E3A8A; /* Dark blue text on active link */
            font-weight: 600;
        }

        .mobile-nav .nav-link:last-child {
            border-bottom: none;
        }

        .mobile-nav .nav-link:hover {
            background-color: #FACC15; /* Yellow on hover */
            color: #1E3A8A;
        }

        /* Main Hero BANNER style (changed from section) */
        .hero-banner {
            background: linear-gradient(135deg, #FFFFFF 0%, #FEF9E7 100%);
            color: #1E3A8A;
            text-align: center;
            padding: 120px 20px;
            position: relative;
            overflow: hidden;
            padding-top: 100px;
            transition: background 0.5s ease, color 0.5s ease;
        }

        .hero-banner::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: url('../img/bg_eve.png');
            background-size: cover;
            background-position: center;
            opacity: 0.5;
            z-index: 0;
        }

        .hero-banner h1 {
            font-size: 4.8rem;
            font-weight: 900;
            line-height: 1.1;
            margin-bottom: 20px;
            text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.1);
            position: relative;
            z-index: 1;
        }

        .hero-banner p {
            font-size: 1.6rem;
            font-weight: 500;
            color: #4B5563;
            position: relative;
            z-index: 1;
        }

        .cta-button {
            display: inline-block;
            background-color: #1E3A8A;
            color: #FFFFFF;
            padding: 15px 35px;
            border-radius: 50px;
            font-size: 1.2rem;
            font-weight: 700;
            margin-top: 30px;
            transition: transform 0.2s ease, background-color 0.2s ease;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
            position: relative;
            z-index: 1;
        }

        .cta-button:hover {
            transform: translateY(-3px);
            background-color: #FACC15;
            color: #1E3A8A;
        }
        
        /* Product Lineup Section Styling */
        .product-lineup-section {
            background-color: #F8F8F8; /* Light gray background for contrast */
            color: #333333;
            padding: 80px 40px;
            text-align: center;
            border-bottom: 1px solid #D4DEEA;
        }
        
        .lineup-grid {
            display: grid;
            grid-template-columns: 1fr; /* Default mobile 1 column */
            gap: 20px;
            margin-top: 40px;
            max-width: 1300px;
            margin-left: auto;
            margin-right: auto;
        }

        .lineup-item {
            background-color: #FFFFFF;
            border-radius: 12px;
            padding: 20px;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            height: auto;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: flex-start;
            text-align: center;
            border: 2px solid #D4DEEA;
        }

        .lineup-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
            border-color: #1E3A8A;
        }
        
        .lineup-item img {
            max-height: 300px; /* Adjust height as needed */
            width: auto;
            margin-bottom: 15px;
            object-fit: contain;
        }


        .lineup-item h3 {
            color: #1E3A8A;
            margin-bottom: 5px;
            font-size: 1.2rem;
            font-weight: 700;
        }

        .lineup-item p {
            font-size: 0.9rem;
            line-height: 1.4;
            color: #4B5563;
        }

        /* Highlight the featured item (Eve 3Shot Premium) */
        .featured-item {
            border-color: #E53E3E; /* Red border for featured */
            background-color: #FFFDE7; /* Very light yellow background */
        }
        
        .featured-item h3 {
            color: #E53E3E !important; /* Red heading for featured */
            font-size: 1.3rem;
            font-weight: 900;
        }
        /* End Product Lineup Section Styling */


        /* Key features section */
        .features-section,
        .ingredients-section {
            padding: 60px 40px;
            background-color: #FFFFFF; /* Default white background */
            text-align: center;
            color: #1E3A8A;
            transition: background-color 0.5s ease, color 0.5s ease;
        }

        /* NEW: Yellow background for features section on scroll */
        .features-section.scrolled-yellow,
        .recommended-section.scrolled-yellow {
            background-color: #FACC15; /* Yellow background */
            color: #1A1A1A; /* Dark text for contrast */
        }
        
        .features-section.scrolled-yellow .section-heading,
        .features-section.scrolled-yellow h3 {
            color: #1E3A8A; /* Dark blue for headings */
        }

        .features-section.scrolled-yellow p {
            color: #333333; /* Darker gray for paragraphs */
        }

        .features-section.scrolled-yellow .feature-item,
        .features-section.scrolled-yellow .ingredient-item {
            background-color: #FFFFFF; /* White background for items */
            color: #333333; /* Dark text for items */
        }

        .features-section.scrolled-yellow .feature-item h3,
        .features-section.scrolled-yellow .ingredient-item h3 {
            color: #1E3A8A; /* Dark blue headings for items */
        }

        .features-section.scrolled-yellow .section-heading::after {
            background-color: #E53E3E; /* Red line for headings */
        }


        .feature-grid,
        .ingredients-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 30px;
            margin-top: 40px;
            justify-content: center;
        }

        .feature-item {
            background-color: #FFFFFF;
            border-radius: 15px;
            padding: 30px;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
            transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.5s ease, color 0.5s ease;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .feature-item img {
            width: auto;
            max-height: 200px;
            object-fit: contain;
        }

        .feature-item:hover,
        .ingredient-item:hover {
            transform: translateY(-10px) scale(1.02);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.2);
        }

        .feature-item h3,
        .ingredient-item h3 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #1E3A8A;
            margin-bottom: 10px;
            transition: color 0.5s ease;
        }

        .feature-item p,
        .ingredient-item p {
            font-size: 1rem;
            color: #4B5563;
            line-height: 1.6;
            transition: color 0.5s ease;
        }

        /* Common section title style */
        .section-heading {
            font-size: 3rem;
            font-weight: 800;
            color: #1E3A8A;
            text-align: center;
            margin-bottom: 50px;
            padding-top: 20px;
            position: relative;
            transition: color 0.5s ease;
        }

        .section-heading::after {
            content: '';
            position: absolute;
            left: 50%;
            bottom: -15px;
            transform: translateX(-50%);
            width: 80px;
            height: 5px;
            background-color: #E53E3E; /* Red line */
            border-radius: 3px;
            transition: background-color 0.5s ease;
        }

        .section-text-container {
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }

        /* Other section padding adjustments */
        section:not(.hero-section):not(.features-section):not(.recommended-section):not(.ingredients-section):not(.product-lineup-section) {
            padding: 60px 40px;
            border-bottom: 1px solid #D4DEEA;
            background-color: #FFFFFF;
            color: #333333;
            transition: background-color 0.5s ease, color 0.5s ease, border-bottom-color 0.5s ease;
        }

        section:last-of-type {
            border-bottom: none;
        }
        
        /* Since hero is now a div, sections start from the lineup, so adjust padding-top for the first section */
        .product-lineup-section {
            padding-top: 80px;
        }


        section p {
            color: #4B5563;
            transition: color 0.5s ease;
        }

        section a {
            color: #1E3A8A;
            transition: color 0.5s ease;
        }

        section a:hover {
            color: #2D68C0; /* Darker blue on hover */
        }

        /* "Recommended to" section style */
        .recommended-section {
            background-color: #FFFFFF; /* Default white background */
            color: #1A1A1A;
            padding: 60px 40px;
            text-align: center;
            transition: background-color 0.5s ease, color 0.5s ease;
        }

        /* NEW: Yellow background for recommended section on scroll */
        .recommended-section.scrolled-yellow .recommended-section-heading-en {
            color: #E53E3E; /* Red heading on yellow background */
        }

        .recommended-section.scrolled-yellow .section-heading {
            color: #1E3A8A; /* Dark blue heading on yellow background */
        }

        .recommended-section.scrolled-yellow .section-heading::after {
            background-color: #E53E3E; /* Red line on yellow background */
        }

        .recommended-section.scrolled-yellow .recommended-list li {
            color: #333333; /* Dark text for list items */
        }

        .recommended-section.scrolled-yellow .recommended-list li .check-icon svg path {
            fill: #E53E3E; /* Red check icon on yellow background */
        }


        .recommended-section .recommended-section-heading-en {
            font-size: 3.5rem;
            font-weight: 900;
            color: #E53E3E; /* Red heading */
            margin-bottom: 10px;
            line-height: 1;
            transition: color 0.5s ease;
        }

        .recommended-section .section-heading {
            font-size: 2rem;
            font-weight: 800;
            color: #1E3A8A; /* Dark blue heading */
            margin-bottom: 30px;
            padding-top: 0;
            transition: color 0.5s ease;
        }

        .recommended-section .section-heading::after {
            background-color: #E53E3E; /* Red line */
        }

        /* Recommended list style */
        .recommended-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .recommended-list li {
            display: flex;
            align-items: flex-start;
            margin-bottom: 10px;
            font-size: 1.5rem;
            color: #333333;
            transition: color 0.5s ease;
        }

        /* Fix checkmark and text separation on mobile */
        .recommended-list li strong {
            display: inline;
        }

        .recommended-list li span {
            display: inline-flex;
            align-items: center;
        }

        .recommended-list li .check-icon {
            font-size: 1.2rem;
            color: #E53E3E; /* Red check icon */
            margin-right: 10px;
            line-height: 1.5;
            flex-shrink: 0;
            transition: color 0.5s ease;
        }

        .recommended-list li strong {
            font-weight: 700;
        }

        /* CTA section */
        .cta-section {
            background: linear-gradient(135deg, #FFFFFF 0%, #FEF9E7 100%);
            color: #1E3A8A;
            padding: 60px 40px;
            text-align: center;
            transition: background 0.5s ease, color 0.5s ease;
        }

        .cta-section .section-heading {
            color: #1E3A8A;
            padding-top: 0;
            transition: color 0.5s ease;
        }

        .cta-section .section-heading::after {
            background-color: #FACC15;
        }

        /* Footer style */
        footer {
            text-align: center;
            padding: 25px 40px;
            color: #D4DEEA;
            font-size: 0.85rem;
            border-top: 1px solid #D4DEEA;
            margin-top: 0;
            background-color: #FFFFFF;
            position: relative;
            z-index: 998;
            transition: background-color 0.5s ease, border-top 0.5s ease, color 0.5s ease;
        }

        /* Media query adjustments */
        @media (max-width: 767px) {
            .header {
                padding: 15px 20px;
            }

            .hero-banner {
                padding: 80px 20px;
                padding-top: 80px;
            }

            .hero-banner h1 {
                font-size: 3.2rem;
            }

            .hero-banner p {
                font-size: 1.2rem;
            }

            .section-heading {
                font-size: 2.2rem;
            }

            .feature-grid,
            .ingredients-grid,
            .lineup-grid { /* Mobile lineup grid is 1fr by default */
                grid-template-columns: 1fr;
            }

            .recommended-section .recommended-section-heading-en {
                font-size: 2.5rem;
            }

            .recommended-section .section-heading {
                font-size: 1.8rem;
            }

            .recommended-list {
                max-width: 90%;
            }

            .recommended-list li {
                font-size: 1.05rem;
                line-height: 1.4;
                margin-bottom: 12px;
            }

            .recommended-list li .check-icon {
                font-size: 0.95rem;
                margin-right: 8px;
                padding-top: 2px;
            }

            .recommended-section .section-text-container {
                max-width: 90%;
            }

            /* Always show hamburger menu on mobile */
            .main-nav {
                display: none !important;
            }

            .hamburger-button {
                display: flex !important;
            }
        }

        @media (min-width: 768px) {
            .header {
                padding: 20px 40px;
            }

            /* On desktop, keep menu regardless of scroll */
            .main-nav {
                display: flex !important;
            }

            .hamburger-button {
                display: none !important;
            }

            .feature-grid,
            .ingredients-grid {
                grid-template-columns: repeat(2, 1fr);
                max-width: 900px;
                margin-left: auto;
                margin-right: auto;
            }
            
            /* Set 5-column grid for the new lineup section on PC */
            .lineup-grid {
                grid-template-columns: repeat(5, 1fr); 
            }

            .features-section .feature-grid {
                grid-template-columns: repeat(3, 1fr);
                max-width: 1200px;
            }
        }
        
        /* New scroll animation classes */
        .fade-in-on-scroll {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 1.5s ease-out, transform 1.5s ease-out;
        }

        .fade-in-on-scroll.show {
            opacity: 1;
            transform: translateY(0);
        }

        /* Animation delays (simplified, applies to the main section container) */
        .fade-in-on-scroll.show .section-heading {
            transition-delay: 0.2s;
        }

        .fade-in-on-scroll.show .lineup-item,
        .fade-in-on-scroll.show .feature-item,
        .fade-in-on-scroll.show .ingredient-item {
            transition-delay: 0.4s;
        }