/* Base Variables & Reset */
        :root {
            --primary: #1a1a1a;
            --secondary: #D31334;/*#D31334*/
            --text: #1a1a1a;
            --text-light: #666666;
            --border: #e5e5e5;
            --bg-light: #f8f8f8;
            --white: #ffffff;
            --gray-50: #f9fafb;
            --gray-100: #f3f4f6;
            --gray-200: #e5e7eb;
            --gray-300: #d1d5db;
            --gray-400: #9ca3af;
            --gray-500: #6b7280;
            --gray-600: #4b5563;
            --success: #059669;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Pretendard', sans-serif;
            line-height: 1.6;
            background-color: #ffffff;
            color: #000;
            overflow-x: hidden;
        }

        .history-header {
            text-align: center;
            padding: 120px 20px 80px;
            background: linear-gradient(to bottom, #ffffff, #f8f8f8);
            position: relative;
            z-index: 1;
        }

        .history-header h1 {
            font-size: 3.5em;
            color: #000;
            margin-bottom: 20px;
            font-weight: 900;
            letter-spacing: -1px;
        }

        .history-header p {
            font-size: 1.4em;
            color: #666;
            font-weight: 300;
            max-width: 600px;
            margin: 0 auto;
        }

        .timeline-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 80px 20px;
            position: relative;
        }

        .timeline {
            position: relative;
            padding: 40px 0;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            width: 1px;
            height: 100%;
            background: linear-gradient(to bottom, transparent, #000 10%, #000 90%, transparent);
        }

        .timeline-item {
            margin-bottom: 120px;
            position: relative;
            width: 100%;
            display: flex;
            justify-content: center;
        }

        .timeline-content {
            width: 45%;
            background: #fff;
            padding: 40px;
            border-radius: 16px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            position: relative;
            transition: all 0.4s ease;
            border: 1px solid rgba(0,0,0,0.05);
        }

        .timeline-content:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 40px rgba(0,0,0,0.12);
        }

        .timeline-item:nth-child(odd) .timeline-content {
            margin-right: 55%;
        }

        .timeline-item:nth-child(even) .timeline-content {
            margin-left: 55%;
        }

        .year {
            font-size: 42px;
            font-weight: 900;
            color: #000;
            margin-bottom: 25px;
            display: flex;
            align-items: center;
            gap: 15px;
            letter-spacing: -1px;
        }

        .milestone .year {
            font-size: 52px;
            color: #000;
        }

        .icon-container {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 50px;
            height: 50px;
            background: #f8f8f8;
            border-radius: 12px;
            margin-right: 15px;
        }

        .timeline-content ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .timeline-content li {
            position: relative;
            padding-left: 24px;
            margin-bottom: 15px;
            color: #444;
            font-size: 17px;
            line-height: 1.7;
            font-weight: 400;
        }

        .timeline-content li::before {
            content: "";
            position: absolute;
            left: 0;
            top: 12px;
            width: 6px;
            height: 6px;
            background: #000;
            border-radius: 50%;
        }

        .timeline-content li strong {
            color: #000;
            font-weight: 600;
        }

        .timeline-dot {
            width: 16px;
            height: 16px;
            background: #fff;
            border: 3px solid #000;
            border-radius: 50%;
            position: absolute;
            left: 50%;
            top: 50px;
            transform: translateX(-50%);
            z-index: 2;
        }

        .milestone .timeline-dot {
            width: 24px;
            height: 24px;
            border-width: 4px;
        }

        .milestone .timeline-content {
            background: linear-gradient(to bottom right, #fff, #f9f9f9);
            border: 2px solid #000;
        }

        .keyword {
            color: #000;
            font-weight: 600;
            background: linear-gradient(transparent 60%, rgba(0,0,0,0.1) 40%);
            padding: 0 2px;
        }

        @media (max-width: 768px) {
            .timeline::before {
                left: 30px;
            }

            .timeline-content {
                width: calc(100% - 60px);
                margin-left: 60px !important;
                padding: 30px;
            }

            .timeline-dot {
                left: 30px;
            }

            .timeline-item {
                margin-bottom: 60px;
            }

            .year {
                font-size: 32px;
            }

            .milestone .year {
                font-size: 38px;
            }

            .header h1 {
                font-size: 2.5em;
            }

            .header p {
                font-size: 1.1em;
            }
        }
        /* Navigation */
        .nav {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
            transition: all 0.3s ease;
        }

        .nav-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 1.25rem 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .nav-menu {
            display: flex;
            gap: 3rem;
            align-items: center;
        }

        .nav-link {
            color: var(--text);
            text-decoration: none;
            font-size: 0.95rem;
/*            font-weight: 500;*/
            transition: color 0.3s ease;
            position: relative;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -4px;
            width: 100%;
            height: 2px;
            background: var(--secondary);
            transform: scaleX(0);
            transform-origin: right;
            transition: transform 0.3s ease;
        }

        .nav-link:hover::after {
            transform: scaleX(1);
            transform-origin: left;
        }

        .nav-cta {
            padding: 0.75rem 1.5rem;
            background: var(--secondary);
            color: var(--white);
            border: none;
            border-radius: 4px;
            font-size: 0.95rem;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .nav-cta:hover {
            background: var(--primary);
            transform: translateY(-2px);
        }

        /* Mobile Menu */
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 0.5rem;
        }

        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--primary);
            margin: 5px 0;
            transition: all 0.3s ease;
        }

        .mobile-menu {
            position: fixed;
            top: 0;
            right: -100%;
            width: 100%;
            height: 100vh;
            background: var(--white);
            z-index: 999;
            transition: all 0.3s ease;
        }

        .mobile-menu.active {
            right: 0;
        }

        .mobile-menu-container {
            padding: 2rem;
        }

        .mobile-menu-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 2rem;
        }

        .mobile-menu-content {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }

        .mobile-menu-link {
            color: var(--text);
            text-decoration: none;
            font-size: 1.25rem;
            font-weight: 500;
        }

        /* Buttons */
        .btn-primary {
            padding: 1rem 2rem;
            background: var(--secondary);
            color: var(--white);
            border: none;
            border-radius: 4px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .btn-primary:hover {
            background: var(--primary);
            transform: translateY(-2px);
        }

        .btn-secondary {
            padding: 1rem 2rem;
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--border);
            border-radius: 4px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .btn-secondary:hover {
            background: var(--gray-100);
            transform: translateY(-2px);
        }

        /* Section Styles */
        .section-header {
            text-align: center;
            margin-bottom: 4rem;
        }

        .section-subtitle {
            color: var(--secondary);
            font-weight: 600;
            font-size: 1.1rem;
            margin-bottom: 1rem;
            display: block;
        }

        .section-title {
            font-size: 3.5rem;
            margin-bottom: 1.5rem;
        }

        .section-description {
            color: var(--text-light);
            font-size: 1.2rem;
            text-align: left;
            width: 100%;
            margin: 0 auto;
        }
        /* Footer */
        .footer {

            background: var(--primary);
            color: var(--white);
            padding: 6rem 0 2rem;
        }

        .footer-content {
            max-width: 1440px;
            margin: 0 auto;
            padding: 0 2rem;
            display: grid;
            grid-template-columns: 2fr 3fr 2fr;
            gap: 4rem;
            margin-bottom: 4rem;
        }

        .footer-logo {
            margin-bottom: 1rem;
        }

        .footer-logo .logo {
            color: var(--white);
            font-size: 1.75rem;
        }

        .footer-logo p {
            color: var(--gray-400);
            margin-top: 1rem;
        }

        .footer-links {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }

        .footer-column h4 {
            font-size: 1.1rem;
            color: var(--white);
            margin-bottom: 1.5rem;
        }

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

        .footer-column ul li {
            margin-bottom: 0.75rem;
        }

        .footer-column a {
            color: var(--gray-400);
            text-decoration: none;
            transition: all 0.3s ease;
            display: inline-block;
        }

        .footer-column a:hover {
            color: var(--white);
            transform: translateX(5px);
        }

        .footer-contact h4 {
            font-size: 1.1rem;
            margin-bottom: 1.5rem;
        }

        .contact-info {
            color: var(--gray-400);
            margin-bottom: 0.75rem;
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            gap: 0.5rem;
        }

        .social-links {
            margin-top: 1.5rem;
            display: flex;
            gap: 1rem;
        }

        .social-link {
            color: var(--gray-400);
            text-decoration: none;
            transition: all 0.3s ease;
        }

        .social-link:hover {
            color: var(--white);
            transform: translateY(-3px);
        }

        .social-link svg {
            width: 24px;
            height: 24px;
            fill: currentColor;
        }

        .footer-bottom {
            padding-top: 2rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            text-align: center;
            color: var(--gray-400);
        }

        /* Animation Classes */
        .fade-up {
            opacity: 0;
            transform: translateY(20px);
            transition: all 0.6s ease;
        }

        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* Responsive Design */
        @media (max-width: 1024px) {
            .contact-content {
                grid-template-columns: 1fr;
                gap: 3rem;
            }
            
            .footer-content {
                grid-template-columns: 1fr;
                gap: 3rem;
            }
            
            .footer-links {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .contact-form {
                padding: 2rem;
            }
            
            .footer-links {
                grid-template-columns: 1fr;
            }
            
            .social-links {
                justify-content: center;
            }
            
            .footer-bottom {
                padding: 1.5rem 0;
            }
        }

        /* Utility Classes */
        .text-center {
            text-align: center;
        }

        .mb-0 {
            margin-bottom: 0;
        }

        .text-gradient {
            background: linear-gradient(45deg, var(--secondary), var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
    /* 기존 nav 스타일은 유지하고 드롭다운 관련 스타일 추가 */
    .nav-item {
        position: relative;
        display: inline-block;
    }

    .dropdown-content {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        background: var(--white);
        min-width: 180px;
        box-shadow: 0 8px 16px rgba(0,0,0,0.1);
        border-radius: 8px;
        padding: 8px 0;
        z-index: 1001;
        opacity: 0;
        transform: translateY(12px);
        transition: all 0.3s ease;
    }

    .nav-item:hover .dropdown-content {
        display: block;
        opacity: 1;
        transform: translateY(0);
    }

    .dropdown-content a {
        color: var(--text);
        padding: 12px 20px;
        text-decoration: none;
        display: block;
        font-size: 0.95rem;
        transition: all 0.3s ease;
    }

    .dropdown-content a:hover {
        background: var(--gray-50);
        color: var(--secondary);
        padding-left: 24px;
    }
    /* 기존 nav 스타일은 유지 */
    .nav-item {
        position: relative;
        display: inline-block;
    }

    .dropdown-content {
        display: none;
        position: absolute;
        top: calc(100% + 20px); /* 상단에서 20px 더 아래로 조정 */
        left: 0;
        background: var(--white);
        min-width: 180px;
        box-shadow: 0 8px 16px rgba(0,0,0,0.1);
        border-radius: 8px;
        padding: 8px 0;
        z-index: 1001;
        opacity: 0;
        transform: translateY(10px);
        transition: all 0.3s ease;
    }

    /* 드롭다운 메뉴가 표시되기 전의 투명한 영역 추가 */
    .nav-item::after {
        content: '';
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        height: 20px; /* 상단 여백과 동일한 높이 */
        background: transparent;
    }

    /* 드롭다운 화살표 추가 */
    .dropdown-content::before {
        content: '';
        position: absolute;
        top: -8px;
        left: 20px;
        width: 16px;
        height: 16px;
        background: var(--white);
        transform: rotate(45deg);
        box-shadow: -3px -3px 5px rgba(0,0,0,0.04);
    }

    .nav-item:hover .dropdown-content {
        display: block;
        opacity: 1;
        transform: translateY(0);
    }

    .dropdown-content a {
        color: var(--text);
        padding: 12px 20px;
        text-decoration: none;
        display: block;
        font-size: 0.95rem;
        transition: all 0.3s ease;
        position: relative;
        z-index: 1;
    }

    .dropdown-content a:hover {
        background: var(--gray-50);
        color: var(--secondary);
        padding-left: 24px;
    }

    /* 호버 시 nav-link 스타일 수정 */
    .nav-item:hover .nav-link {
        color: var(--secondary);
    }

    /* 모바일 대응 스타일 */
    @media (max-width: 768px) {
        .dropdown-content {
            position: static;
            box-shadow: none;
            padding-left: 20px;
            display: none;
            background: var(--gray-50);
            margin: 8px 0;
            transform: none;
        }

        .dropdown-content::before {
            display: none;
        }

        .nav-item.active .dropdown-content {
            display: block;
        }

        .dropdown-content a {
            padding: 10px 20px;
        }

        .nav-item::after {
            display: none;
        }
    }