:root {
            --primary: #002E6E;
            --accent: #0066FF;
            --text: #1E293B;
            --subtext: #64748B;
            --border: #E2E8F0;
            --bg: #FAFBFF;
            --pill-gray: #94A3B8;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            -webkit-font-smoothing: antialiased;
        }

        body {
            font-family: 'Noto Sans KR', sans-serif;
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.6;
            background-image: 
                linear-gradient(var(--border) 1px, transparent 1px),
                linear-gradient(90deg, var(--border) 1px, transparent 1px);
            background-size: 40px 40px;
        }

        nav {
            position: fixed;
            top: 0;
            width: 100%;
            height: 80px;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
            display: flex;
            align-items: center;
            padding: 0 5%;
            z-index: 1000;
            justify-content: space-between;
        }

        .logo {
            font-weight: 900;
            font-size: 22px;
            color: var(--primary);
            letter-spacing: -0.05em;
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
        }

        .logo-mark {
            width: 32px;
            height: 32px;
            background: var(--primary);
            border-radius: 4px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 14px;
        }

        .nav-links {
            display: flex;
            gap: 32px;
        }

        .nav-links a {
            text-decoration: none;
            color: var(--text);
            font-size: 14px;
            font-weight: 500;
            transition: color 0.2s;
        }

        .nav-links a:hover, .nav-links a.active {
            color: var(--accent);
        }

        .sub-header {
            padding: 160px 5% 60px;
            background: white;
            border-bottom: 1px solid var(--border);
        }

        .section-label {
            font-family: 'Inter', sans-serif;
            font-size: 11px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.1em;
            color: var(--accent);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .section-label::before {
            content: '';
            width: 24px;
            height: 1px;
            background: var(--accent);
        }

        .page-title {
            font-size: 42px;
            font-weight: 900;
            color: var(--primary);
            margin-bottom: 16px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 100px 5%;
        }

        section {
            margin-bottom: 120px;
        }

        h2.section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 48px;
            position: relative;
        }

        
        .ceo-section {
            display: grid;
            grid-template-columns: 1fr 1.5fr;
            gap: 60px;
            align-items: center;
        }

        .ceo-image {
            background: #eef2f6;
            aspect-ratio: 4/5;
            border-radius: 4px;
            overflow: hidden;
            border: 1px solid var(--border);
        }

        .ceo-content h3 {
            font-size: 24px;
            color: var(--primary);
            margin-bottom: 24px;
            font-weight: 700;
        }

        .ceo-content p {
            color: var(--subtext);
            font-size: 17px;
            margin-bottom: 20px;
        }

        .ceo-signature {
            margin-top: 40px;
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        
        .overview-table {
            width: 100%;
            border-collapse: collapse;
            background: white;
            border: 1px solid var(--border);
        }

        .overview-table th, .overview-table td {
            padding: 24px 32px;
            border-bottom: 1px solid var(--border);
            text-align: left;
        }

        .overview-table th {
            width: 200px;
            background: #F8FAFC;
            font-weight: 700;
            color: var(--primary);
            font-size: 15px;
        }

        .overview-table td {
            color: var(--text);
            font-size: 15px;
        }

        
        .timeline {
            position: relative;
            padding-left: 40px;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 1px;
            background: var(--border);
        }

        .timeline-item {
            position: relative;
            margin-bottom: 48px;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -44.5px;
            top: 8px;
            width: 10px;
            height: 10px;
            background: white;
            border: 2px solid var(--accent);
            border-radius: 50%;
        }

        .timeline-year {
            font-family: 'Inter', sans-serif;
            font-size: 24px;
            font-weight: 800;
            color: var(--accent);
            margin-bottom: 8px;
        }

        .timeline-desc {
            color: var(--text);
            font-weight: 600;
            font-size: 18px;
        }

        
        .org-chart-box {
            background: white;
            border: 1px solid var(--border);
            padding: 60px;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .org-node {
            padding: 16px 32px;
            background: var(--primary);
            color: white;
            font-weight: 700;
            border-radius: 4px;
            margin-bottom: 40px;
            position: relative;
        }

        .org-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            width: 100%;
        }

        .org-leaf {
            background: #F1F5F9;
            padding: 16px;
            text-align: center;
            font-weight: 600;
            color: var(--primary);
            border-radius: 4px;
            font-size: 14px;
        }

        
        .certs-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .cert-card {
            background: white;
            border: 1px solid var(--border);
            padding: 32px;
            text-align: center;
            transition: all 0.2s;
        }

        .cert-card:hover {
            transform: translateY(-5px);
            border-color: var(--accent);
        }

        .cert-icon-circle {
            width: 60px;
            height: 60px;
            margin: 0 auto 20px;
            border: 1px solid var(--accent);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
        }

        .cert-title {
            font-weight: 700;
            color: var(--primary);
            font-size: 15px;
        }

        
        .map-wrapper {
            display: grid;
            grid-template-columns: 1.5fr 1fr;
            gap: 32px;
            background: white;
            border: 1px solid var(--border);
            overflow: hidden;
        }

        .map-placeholder {
            background: #e2e8f0;
            min-height: 400px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--subtext);
        }

        .map-info {
            padding: 40px;
        }

        .info-item {
            margin-bottom: 32px;
        }

        .info-label {
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .info-value {
            color: var(--subtext);
            font-size: 15px;
        }

        footer {
            padding: 40px 5%;
            background: #001a3d;
            color: rgba(255,255,255,0.5);
            font-size: 12px;
            border-top: 1px solid rgba(255,255,255,0.1);
            display: flex;
            justify-content: space-between;
        }

        @media (max-width: 1024px) {
            .ceo-section, .map-wrapper { grid-template-columns: 1fr; }
            .org-grid, .certs-grid { grid-template-columns: repeat(2, 1fr); }
        }
    
        @media (max-width: 768px) {
            nav { padding: 0 20px; height: 72px; }
            .nav-links { display: none; }
            nav .btn-group a { padding: 9px 13px !important; font-size: 11px !important; }
            .logo { font-size: 15px; white-space: nowrap; }
            footer { gap: 12px; flex-direction: column; }
        }