/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans KR', sans-serif;
    line-height: 1.6;
    color: #333;
}

.container {
    max-width: 1170px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Animation Classes */
.animate-in {
    animation: fadeInUp 0.8s ease-out forwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Header Styles */
.header {
    background: #fff;
    letter-spacing: normal;
    left: 0;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo img {
    height: 50px;
}

.main-nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center;
}

.main-nav a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s;
    position: relative;
}

.main-nav a:hover {
    color: #0066cc;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #0066cc;
    transition: width 0.3s;
}

.main-nav a:hover::after {
    width: 100%;
}

.btn-contact {
    background: #c6183d;
    border: 1px solid #c6183d;
    color: #fff !important;
    border-radius: 16px;
    font-family: 'Noto Sans KR', sans-serif;
    font-size: 14px;
    font-weight: 500;
    line-height: 1.2;
    height: 40px;
    min-width: 120px;
    padding: 0 24px;
    text-decoration: none;
    align-items: center;
    display: inline-flex;
    justify-content: center;
    white-space: nowrap;
    transition: border .4s cubic-bezier(.51,.92,.24,1), background .4s cubic-bezier(.51,.92,.24,1), color .4s cubic-bezier(.51,.92,.24,1);
}

.btn-contact:hover {
    background: #fff !important;
    border-color: #c6183d;
    color: #c6183d !important;
}

.btn-contact::after {
    display: none !important;
}

.mobile-menu-toggle {
    display: none;
    font-size: 24px;
    cursor: pointer;
    transition: transform 0.3s;
}

.mobile-menu-toggle.active {
    transform: rotate(90deg);
}

/* Hero Section */
.hero {
    margin-top: 80px;
    position: relative;
    height: 570px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    max-width: 1440px;
    margin-left: auto;
    margin-right: auto;
    padding: 0 20px;
    border-radius: 120px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('images/main.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.hero-content {
    position: relative;
    z-index: 2;
    width: 100%;
    color: white;
    max-width: 1440px;
    margin: 0;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: flex-start;
}

.hero-content > div{
    margin: 0px;
}

.hero-text {
    max-width: 600px;
    text-align: left;
    margin-left: 0;
    margin-right: auto;
}

.hero-text h1 {
    font-size: 38px;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
    letter-spacing: -0.02em;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
}

.hero-text p {
    font-size: 18px;
    margin-bottom: 30px;
    opacity: 0.95;
    line-height: 1.6;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.7);
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: flex-start;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 15px 30px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 500;
    transition: all 0.3s;
    border: 2px solid transparent;
    font-size: 16px;
    cursor: pointer;
}

.btn-primary {
    background: #c6183d;
    color: white;
    border-color: #c6183d;
}

.btn-primary:hover {
    background: #a01432;
    border-color: #a01432;
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: white;
    border-color: white;
}

.btn-secondary:hover {
    background: white;
    color: #0066cc;
    transform: translateY(-2px);
}

/* ISO 주요 인증 Section */
.iso-main {
    background: #f8f9fa;
    padding: 80px 0;
}

.iso-main-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.iso-card {
    background: white;
    padding: 40px 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.iso-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.iso-icon {
    width: 80px;
    height: 80px;
    background: #0066cc;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    transition: transform 0.3s;
}

.iso-card:hover .iso-icon {
    transform: scale(1.1);
}

.iso-icon i {
    font-size: 2rem;
    color: white;
}

.iso-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: #333;
}

.iso-card p {
    color: #666;
    margin-bottom: 20px;
}

.iso-link {
    color: #0066cc;
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    transition: gap 0.3s;
}

.iso-link:hover {
    gap: 10px;
}

/* Section Styles */
section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 15px;
}

.section-header p {
    font-size: 1.1rem;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

/* About Section */
.about {
    background: white;
    padding: 80px 0;
}

.about-content {
    margin: 0 auto;
    text-align: center;
}

.about-text h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 30px;
    color: #333;
}

.about-text p {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 20px;
    line-height: 1.6;
}

.about-contact-info {
    margin-top: 50px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    text-align: left;
}

.about-contact-info .contact-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    padding: 25px;
    background: #f8f9fa;
    border-radius: 10px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.about-contact-info .contact-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.about-contact-info .contact-item i {
    font-size: 1.5rem;
    color: #0066cc;
    margin-top: 5px;
    min-width: 20px;
}

.about-contact-info .contact-item h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: #333;
}

.about-contact-info .contact-item p {
    font-size: 1rem;
    color: #666;
    margin: 0;
    line-height: 1.5;
}

/* Contact Info Section */
.contact-info-section {
    background: #f8f9fa;
    padding: 60px 0;
}

.contact-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.contact-info-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    padding: 20px;
    background: white;
    border-radius: 10px;
    border: 1px solid #e9ecef;
}

.contact-info-item i {
    font-size: 2rem;
    color: #0066cc;
    margin-top: 5px;
}

.contact-info-item h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: #333;
}

.contact-info-item p {
    color: #666;
    line-height: 1.6;
}

/* ISO Certification Section */
.iso-certification {
    background: white;
}

.iso-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.iso-item {
    background: #f8f9fa;
    padding: 25px;
    border-radius: 8px;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid #e9ecef;
}

.iso-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.iso-item h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: #333;
}

.iso-item p {
    color: #666;
    margin-bottom: 15px;
    font-size: 0.9rem;
}

.iso-detail-link {
    color: #0066cc;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
}

.iso-detail-link:hover {
    text-decoration: underline;
}

/* Product Certification Section */
.product-certification {
    background: #f8f9fa;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
}

.product-item {
    background: white;
    padding: 40px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
}

.product-item:hover {
    transform: translateY(-5px);
}

.product-item h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: #333;
}

.product-item p {
    color: #666;
    margin-bottom: 20px;
    line-height: 1.6;
}

.product-detail-link {
    color: #0066cc;
    text-decoration: none;
    font-weight: 500;
}

.product-detail-link:hover {
    text-decoration: underline;
}

/* Company Certification Section */
.company-certification {
    background: white;
}

.company-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.company-item {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    transition: transform 0.3s;
    border: 1px solid #e9ecef;
}

.company-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.company-item h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: #333;
}

.company-item p {
    color: #666;
    margin-bottom: 20px;
}

.company-detail-link {
    color: #0066cc;
    text-decoration: none;
    font-weight: 500;
}

.company-detail-link:hover {
    text-decoration: underline;
}

/* Contact Section */
.contact {
    background: #f8f9fa;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
}

.contact-item i {
    font-size: 1.5rem;
    color: #0066cc;
    margin-top: 5px;
}

.contact-item h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 5px;
    color: #333;
}

.contact-item p {
    color: #666;
    line-height: 1.6;
}

.contact-form {
    background: white;
    border-radius: 10px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #0066cc;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* Footer */
.footer {
    background: #333;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.footer-section p {
    line-height: 1.6;
    margin-bottom: 15px;
    opacity: 0.9;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a {
    color: white;
    text-decoration: none;
    opacity: 0.9;
    transition: opacity 0.3s;
    font-size: 0.9rem;
}

.footer-section ul li a:hover {
    opacity: 1;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: background 0.3s;
}

.social-links a:hover {
    background: rgba(255, 255, 255, 0.2);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 20px;
    text-align: center;
    opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .contact-form-wrapper {
        max-width: 100%;
        padding: 0 20px;
    }
    
    .contact-info-inline {
        grid-template-columns: 1fr;
        gap: 15px;
    }
}

@media (max-width: 768px) {
    .header-content {
        padding: 10px 0;
    }
    
    .main-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        padding: 20px;
    }
    
    .main-nav.active {
        display: block;
    }
    
    .main-nav ul {
        flex-direction: column;
        gap: 15px;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .hero {
        margin-top: 60px;
        height: 500px;
    }
    
    .hero-text h1 {
        font-size: 2.5rem;
    }
    
    .hero-text p {
        font-size: 1.1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 15px;
        align-items: center;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    /* Contact Page */
    .contact-hero {
        height: 250px;
    }
    
    .contact-hero .hero-text h1 {
        font-size: 2.5rem;
    }
    
    .contact-form-section {
        padding: 80px 0 60px;
    }
    
    .contact-form-main {
        padding: 30px;
    }
    
    .contact-info-inline {
        padding: 20px;
        margin-bottom: 30px;
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .contact-info-inline .contact-info-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    
    .contact-info-inline .contact-info-item i {
        margin-top: 0;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .form-group input,
    .form-group textarea {
        font-size: 16px; /* iOS에서 줌 방지 */
        padding: 12px 10px;
    }
    
    .checkbox-group {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    
    .checkbox-item {
        padding: 10px 12px;
        min-height: auto;
    }
    
    .checkbox-item span {
        font-size: 0.9rem;
        line-height: 1.3;
        word-break: keep-all;
    }
    
    .form-section {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    section {
        padding: 60px 0;
    }
    
    .hero {
        height: 400px;
    }
    
    .hero-text h1 {
        font-size: 2rem;
    }
    
    .hero-text p {
        font-size: 1rem;
    }
    
    .iso-card,
    .product-item,
    .company-item,
    .contact-info-item {
        padding: 20px;
    }
    
    .contact-form {
        padding: 25px;
    }
    
    /* Contact Page */
    .contact-hero {
        height: 200px;
    }
    
    .contact-hero .hero-text h1 {
        font-size: 2rem;
    }
    
    .contact-form-main {
        padding: 20px;
    }
    
    .contact-info-inline {
        padding: 15px;
        margin-bottom: 25px;
    }
    
    .contact-info-inline .contact-info-item h4 {
        font-size: 0.9rem;
    }
    
    .contact-info-inline .contact-info-item p {
        font-size: 0.85rem;
    }
    
    .form-group label {
        font-size: 0.85rem;
    }
    
    .form-group input,
    .form-group textarea {
        font-size: 16px;
        padding: 10px 8px;
    }
    
    .checkbox-item {
        padding: 8px 10px;
    }
    
    .checkbox-item span {
        font-size: 0.85rem;
    }
    
    .form-header h2 {
        font-size: 1.5rem;
    }
    
    .form-section {
        padding: 15px;
    }
    
    .form-section h3 {
        font-size: 1rem;
    }
}

/* Contact Page Styles */
.contact-section {
    padding: 120px 0 80px;
    background: #f8f9fa;
    min-height: 100vh;
}

.contact-wrapper {
    max-width: 1170px;
    margin: 0 auto;
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.contact-header {
    background: white;
    color: #333;
    padding: 50px;
    text-align: center;
}

.contact-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: #333;
}

.contact-header p {
    font-size: 1.2rem;
    color: #666;
}

.contact-info-box {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    padding: 30px;
    background: white;
    border-bottom: 1px solid #e9ecef;
}

.contact-info-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    padding: 20px;
    background: white;
    border-radius: 10px;
    border: 1px solid #e9ecef;
}

.contact-info-item i {
    font-size: 1.5rem;
    color: #0066cc;
    margin-top: 3px;
    min-width: 24px;
}

.contact-info-item h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: #333;
}

.contact-info-item p {
    font-size: 1rem;
    color: #666;
    line-height: 1.5;
    margin: 0;
}

.contact-info-item a {
    color: #0066cc;
    text-decoration: none;
    transition: color 0.3s;
}

.contact-info-item a:hover {
    color: #004499;
}

.contact-form {
    padding: 50px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 8px;
    color: #333;
    font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s;
    font-family: inherit;
    box-sizing: border-box;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #0066cc;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-section {
    margin-bottom: 30px;
}

.form-section h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: #333;
}

.checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    padding: 8px 12px;
    border-radius: 5px;
    transition: background 0.3s;
    background: white;
    border: 1px solid #e9ecef;
    min-width: 200px;
    flex: 1 1 auto;
}

.checkbox-item:hover {
    background: rgba(0, 102, 204, 0.05);
    border-color: #0066cc;
}

.checkbox-item input[type="checkbox"] {
    width: auto;
    margin: 0;
    accent-color: #0066cc;
    flex-shrink: 0;
}

.checkbox-item span {
    font-size: 0.9rem;
    color: #333;
    line-height: 1.4;
    word-break: keep-all;
}

.form-submit {
    text-align: center;
    margin-top: 40px;
}

.form-submit .btn {
    padding: 15px 40px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .contact-section {
        padding: 100px 0 60px;
    }
    
    .contact-header {
        padding: 40px 30px;
    }
    
    .contact-header h1 {
        font-size: 2.2rem;
    }
    
    .contact-info-box {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 15px;
        padding: 25px;
    }
    
    .contact-form {
        padding: 40px;
    }
    
    .checkbox-item {
        min-width: 180px;
    }
}

@media (max-width: 768px) {
    .contact-section {
        padding: 80px 0 50px;
    }
    
    .contact-wrapper {
        margin: 0 15px;
    }
    
    .contact-header {
        padding: 35px 25px;
    }
    
    .contact-header h1 {
        font-size: 2rem;
    }
    
    .contact-header p {
        font-size: 1.1rem;
    }
    
    .contact-info-box {
        grid-template-columns: 1fr;
        gap: 12px;
        padding: 20px;
    }
    
    .contact-info-item {
        padding: 15px;
    }
    
    .contact-form {
        padding: 30px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .form-group input,
    .form-group textarea {
        font-size: 16px;
        padding: 12px 10px;
    }
    
    .checkbox-group {
        gap: 10px;
    }
    
    .checkbox-item {
        min-width: 100%;
        padding: 10px 12px;
    }
    
    .form-section {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .contact-section {
        padding: 70px 0 40px;
    }
    
    .contact-wrapper {
        margin: 0 10px;
        border-radius: 10px;
    }
    
    .contact-header {
        padding: 30px 20px;
    }
    
    .contact-header h1 {
        font-size: 1.8rem;
    }
    
    .contact-header p {
        font-size: 1rem;
    }
    
    .contact-info-box {
        padding: 15px;
    }
    
    .contact-info-item {
        padding: 12px;
    }
    
    .contact-info-item h4 {
        font-size: 1rem;
    }
    
    .contact-info-item p {
        font-size: 0.9rem;
    }
    
    .contact-form {
        padding: 20px;
    }
    
    .form-group label {
        font-size: 0.9rem;
    }
    
    .form-group input,
    .form-group textarea {
        font-size: 16px;
        padding: 10px 8px;
    }
    
    .checkbox-item {
        padding: 8px 10px;
    }
    
    .checkbox-item span {
        font-size: 0.85rem;
    }
    
    .form-section {
        padding: 15px;
    }
    
    .form-section h3 {
        font-size: 1.1rem;
    }
    
    .form-submit .btn {
        padding: 12px 30px;
        font-size: 1rem;
    }
}

/* 드롭다운 메뉴 스타일 */
.main-nav .dropdown {
  position: relative;
}
.main-nav .dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: #fff;
  min-width: 240px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.12);
  border-radius: 0 0 12px 12px;
  z-index: 100;
  padding: 10px 0;
}
.main-nav .dropdown:hover .dropdown-menu,
.main-nav .dropdown:focus-within .dropdown-menu {
  display: block;
}
.main-nav .dropdown-menu li {
  width: 100%;
}
.main-nav .dropdown-menu a {
  display: block;
  padding: 10px 24px;
  color: #333;
  font-size: 15px;
  white-space: nowrap;
  transition: background 0.2s, color 0.2s;
}
.main-nav .dropdown-menu a:hover {
  background: #f5f7fa;
  color: #0066cc;
}

/* PC: hover/focus로 드롭다운 열림 */
@media (min-width: 901px) {
  .main-nav .dropdown:hover .dropdown-menu,
  .main-nav .dropdown:focus-within .dropdown-menu {
    display: block;
  }
}

/* 모바일: 오직 .open 클래스에만 드롭다운 열림 */
@media (max-width: 900px) {
  .main-nav .dropdown .dropdown-menu {
    display: none !important;
  }
  .main-nav .dropdown.open .dropdown-menu {
    display: block !important;
  }
}

/* 모바일에서 드롭다운 메뉴 */
@media (max-width: 900px) {
  .main-nav ul {
    flex-direction: column;
    gap: 0;
    width: 100%;
  }
  .main-nav ul > li {
    width: 100%;
  }
  .main-nav .dropdown {
    width: 100%;
  }
  .main-nav .dropdown-menu {
    position: static;
    box-shadow: none;
    background: #f9f9f9;
    border-radius: 0;
    padding: 0;
    width: 100%;
    border-top: 1px solid #eee;
    margin: 0;
    max-height: 320px;
    overflow-y: auto;
  }
  .main-nav .dropdown.open > .menu-link {
    background: #f5f7fa;
    color: #0066cc;
  }
  .main-nav .dropdown-menu li {
    width: 100%;
  }
  .main-nav ul > li > a,
  .main-nav .dropdown > .menu-link {
    display: block;
    width: 100%;
    box-sizing: border-box;
    padding: 16px 24px;
    background: none;
    color: #333;
    border-bottom: 1px solid #eee;
    font-size: 17px;
    text-align: left;
  }
  .main-nav ul > li:last-child > a {
    border-bottom: none;
  }
  .main-nav .dropdown-menu a {
    padding: 14px 32px;
    font-size: 16px;
    border-bottom: 1px solid #eee;
    background: none;
    color: #333;
  }
  .main-nav .dropdown-menu a:last-child {
    border-bottom: none;
  }
  .main-nav .dropdown-menu a:hover {
    background: #eaf3ff;
    color: #0066cc;
  }
  .main-nav ul > li > a.btn-contact {
    background: #c6183d !important;
    border: 1px solid #c6183d !important;
    color: #fff !important;
    border-radius: 16px;
    font-family: 'Noto Sans KR', sans-serif;
    font-size: 15px;
    font-weight: 500;
    line-height: 1.2;
    height: 40px;
    min-width: 120px;
    padding: 0 24px;
    text-align: center;
    margin: 16px 0 8px 0;
    box-sizing: border-box;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-bottom: none;
  }
  .main-nav ul > li > a.btn-contact:hover {
    background: #fff !important;
    border-color: #c6183d !important;
    color: #c6183d !important;
  }
  .main-nav .dropdown-menu a {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    display: block;
    width: 100%;
    max-width: 100%;
    }
}

@media (max-width: 900px) and (min-width: 769px) {
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    padding: 20px;
    z-index: 1000;
  }
  .main-nav.active {
    display: block;
  }
  .mobile-menu-toggle {
    display: block;
  }
}