:root {
            --bg: #f4f7fc;
            --card-bg: rgba(255, 255, 255, 0.75);
            --text-primary: #0a0a1a;
            --text-secondary: #3a3a5a;
            --text-muted: #6a6a8a;
            --accent-electric: #0078d4;
            --accent-electric-light: #00b4ff;
            --accent-lighting: #f0a500;
            --accent-lighting-light: #ffd000;
            --nigeria-green: #008751;
            --nigeria-green-light: #00c06a;
            --shadow-sm: 0 4px 15px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 10px 40px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 25px 60px rgba(0, 0, 0, 0.15);
            --radius-card: 32px;
            --radius-btn: 60px;
            --transition: 0.4s cubic-bezier(0.25, 0.1, 0.25, 1.2);
            --font-heading: 'Georgia', 'Times New Roman', serif;
            --font-body: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            font-size: 16px;
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-body);
            background: var(--bg);
            color: var(--text-primary);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 2rem 1.5rem;
            position: relative;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

        .bg-glow {
            position: fixed;
            pointer-events: none;
            z-index: 0;
            opacity: 0.6;
        }
        .bg-glow.g1 {
            width: 60vw;
            height: 60vw;
            background: radial-gradient(circle at 30% 40%, rgba(0, 180, 255, 0.15) 0%, transparent 60%);
            top: -15%;
            left: -15%;
            animation: floatGlow 12s ease-in-out infinite;
        }
        .bg-glow.g2 {
            width: 55vw;
            height: 55vw;
            background: radial-gradient(circle at 70% 60%, rgba(255, 208, 0, 0.12) 0%, transparent 60%);
            bottom: -10%;
            right: -10%;
            animation: floatGlow 15s ease-in-out infinite reverse;
        }
        @keyframes floatGlow {
            0%, 100% { transform: translate(0, 0) scale(1); }
            33% { transform: translate(3vw, -2vw) scale(1.1); }
            66% { transform: translate(-2vw, 1vw) scale(0.95); }
        }

        .circuit-bg {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: 0;
            opacity: 0.08;
            background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="200" height="200" viewBox="0 0 200 200"><path d="M20 50 L70 50 L80 70 L130 70 L140 50 L180 50" stroke="%230078d4" fill="none" stroke-width="1.5"/><circle cx="20" cy="50" r="3" fill="%2300b4ff"/><circle cx="180" cy="50" r="3" fill="%2300b4ff"/><path d="M30 150 L60 150 L70 120 L120 120 L130 150 L170 150" stroke="%23f0a500" fill="none" stroke-width="1.5"/><circle cx="30" cy="150" r="3" fill="%23ffd000"/><circle cx="170" cy="150" r="3" fill="%23ffd000"/></svg>');
            background-size: 280px 280px;
            animation: circuitShift 20s linear infinite;
        }
        @keyframes circuitShift {
            0% { background-position: 0 0; }
            100% { background-position: 280px 280px; }
        }

        .particle-canvas {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: 1;
        }

        .main-wrapper {
            position: relative;
            z-index: 2;
            width: 100%;
            max-width: 1100px;
            display: flex;

            flex-direction: column;
            align-items: center;
            gap: 3rem;
        }

        .header {
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 0.8rem;
        }
        .flag-strip {
            display: flex;
            gap: 8px;
        }
        .flag-strip span {
            width: 28px;
            height: 4px;
            border-radius: 2px;
        }
        .flag-strip .green {
            background: var(--nigeria-green);
            box-shadow: 0 0 8px var(--nigeria-green-light);
        }
        .flag-strip .white {
            background: #e0e0e0;
        }
        .header h1 {
            font-family: var(--font-heading);
            font-size: clamp(2rem, 5vw, 3.2rem);
            font-weight: 800;
            letter-spacing: 0.02em;
            line-height: 1.3;
            background: linear-gradient(135deg, #0078d4 0%, #00a6ff 40%, #f0a500 70%, #ffd000 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            filter: drop-shadow(0 4px 10px rgba(0,120,212,0.2));
            animation: titleGlow 3s ease-in-out infinite;
        }
        @keyframes titleGlow {
            0%, 100% { filter: drop-shadow(0 4px 10px rgba(0,120,212,0.2)); }
            50% { filter: drop-shadow(0 4px 25px rgba(0,180,255,0.5)); }
        }
        .subtitle {
            font-size: 1rem;
            color: var(--text-secondary);
            letter-spacing: 0.08em;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 0.6rem;
            flex-wrap: wrap;
            justify-content: center;
            background: rgba(255,255,255,0.6);
            backdrop-filter: blur(10px);
            padding: 0.5rem 1.8rem;
            border-radius: 50px;
            border: 1px solid rgba(0,0,0,0.05);
        }
        .subtitle .sep {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent-lighting);
            box-shadow: 0 0 15px var(--accent-lighting-light);
            animation: pulseDot 1.5s ease-in-out infinite;
        }
        @keyframes pulseDot {
            0%, 100% { transform: scale(1); opacity: 0.8; }
            50% { transform: scale(1.8); opacity: 1; }
        }
        .location-badge {
            font-size: 0.85rem;
            color: var(--nigeria-green);
            font-weight: 700;
            letter-spacing: 0.06em;
            background: rgba(0, 135, 81, 0.08);
            padding: 0.4rem 1.4rem;
            border-radius: 50px;
            border: 1px solid rgba(0,135,81,0.15);
            backdrop-filter: blur(5px);
        }

        .expo-cards {
            display: flex;
            flex-wrap: wrap;
            gap: 2.5rem;
            justify-content: center;
            width: 100%;
        }
        .expo-card {
            flex: 1 1 320px;
            max-width: 440px;
            background: var(--card-bg);
            backdrop-filter: blur(20px);
            border-radius: var(--radius-card);
            padding: 2.5rem 2rem 2.2rem;
            box-shadow: var(--shadow-md);
            transition: all 0.5s cubic-bezier(0.2, 0.9, 0.4, 1);
            cursor: pointer;
            text-decoration: none;
            color: inherit;
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            gap: 1.3rem;
            border: 1px solid rgba(255,255,255,0.8);
            position: relative;
            overflow: hidden;
            isolation: isolate;
        }
        .expo-card::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(600px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(255,255,255,0.4), transparent 40%);
            opacity: 0;
            transition: opacity 0.4s;
            z-index: -1;
            pointer-events: none;
        }
        .expo-card:hover::after {
            opacity: 1;
        }
        .expo-card:hover {
            transform: translateY(-8px) scale(1.02);
            box-shadow: 0 30px 70px rgba(0, 0, 0, 0.2);
            border-color: rgba(255,255,255,0.4);
        }
        .expo-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            border-radius: 5px 5px 0 0;
            z-index: 2;
        }
        .expo-card.electric::before {
            background: linear-gradient(90deg, var(--accent-electric), var(--accent-electric-light), var(--accent-electric));
        }
        .expo-card.lighting::before {
            background: linear-gradient(90deg, var(--accent-lighting), var(--accent-lighting-light), var(--accent-lighting));
        }
        .expo-icon {
            width: 90px;
            height: 90px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            margin-bottom: 0.2rem;
            transition: all 0.4s ease;
            position: relative;
            z-index: 1;
        }
        .expo-card.electric .expo-icon {
            background: rgba(0, 120, 212, 0.06);
            box-shadow: 0 0 0 0 rgba(0,166,255,0.3);
            animation: electricPulse 3s ease-in-out infinite;
        }
        @keyframes electricPulse {
            0%, 100% { box-shadow: 0 0 0 0 rgba(0,166,255,0.4); }
            50% { box-shadow: 0 0 0 20px rgba(0,166,255,0); }
        }
        .expo-card.lighting .expo-icon {
            background: rgba(240, 165, 0, 0.06);
            box-shadow: 0 0 0 0 rgba(255,208,0,0.35);
            animation: lightingPulse 3s ease-in-out infinite 0.5s;
        }
        @keyframes lightingPulse {
            0%, 100% { box-shadow: 0 0 0 0 rgba(255,208,0,0.4); }
            50% { box-shadow: 0 0 0 20px rgba(255,208,0,0); }
        }
        .expo-card:hover .expo-icon {
            transform: scale(1.15) rotate(5deg);
        }
        .expo-card h2 {
            font-family: var(--font-heading);
            font-size: 1.9rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            position: relative;
            z-index: 1;
        }
        .expo-card.electric h2 {
            color: var(--accent-electric);
            text-shadow: 0 0 10px rgba(0,166,255,0.3);
        }
        .expo-card.lighting h2 {
            color: var(--accent-lighting);
            text-shadow: 0 0 10px rgba(255,208,0,0.3);
        }
        .expo-desc {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
            letter-spacing: 0.03em;
            z-index: 1;
        }
        .expo-meta {
            display: flex;
            gap: 1.4rem;
            font-size: 0.85rem;
            color: var(--text-muted);
            letter-spacing: 0.05em;
            flex-wrap: wrap;
            justify-content: center;
            z-index: 1;
        }
        .expo-meta span {
            display: flex;
            align-items: center;
            gap: 0.3rem;
            background: rgba(0,0,0,0.02);
            padding: 0.3rem 0.9rem;
            border-radius: 20px;
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.8rem 2rem;
            border-radius: var(--radius-btn);
            font-weight: 700;
            letter-spacing: 0.06em;
            font-size: 0.95rem;
            transition: all 0.4s ease;
            border: 2px solid;
            background: transparent;
            cursor: pointer;
            font-family: var(--font-body);
            position: relative;
            overflow: hidden;
            z-index: 1;
            backdrop-filter: blur(10px);
        }
        .btn-ghost::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
            transition: left 0.6s ease;
            z-index: -1;
        }
        .btn-ghost:hover::before {
            left: 100%;
        }
        .expo-card.electric .btn-ghost {
            color: var(--accent-electric);
            border-color: var(--accent-electric);
            box-shadow: 0 0 15px rgba(0,120,212,0.2);
        }
        .expo-card.electric .btn-ghost:hover {
            background: var(--accent-electric);
            color: #fff;
            box-shadow: 0 0 30px rgba(0,166,255,0.6);
            border-color: var(--accent-electric-light);
        }
        .expo-card.lighting .btn-ghost {
            color: var(--accent-lighting);
            border-color: var(--accent-lighting);
            box-shadow: 0 0 15px rgba(240,165,0,0.2);
        }
        .expo-card.lighting .btn-ghost:hover {
            background: var(--accent-lighting);
            color: #fff;
            box-shadow: 0 0 30px rgba(255,208,0,0.6);
            border-color: var(--accent-lighting-light);
        }

        .orbital {
            position: absolute;
            border: 2px dashed;
            border-radius: 50%;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s;
            z-index: 0;
        }
        .expo-card.electric .orbital {
            border-color: rgba(0,166,255,0.4);
            width: 140px;
            height: 140px;
            top: calc(50% - 70px);
            left: calc(50% - 70px);
            animation: spin 8s linear infinite;
        }
        .expo-card.lighting .orbital {
            border-color: rgba(255,208,0,0.4);
            width: 150px;
            height: 150px;
            top: calc(50% - 75px);
            left: calc(50% - 75px);
            animation: spin 10s linear infinite reverse;
        }
        .expo-card:hover .orbital {
            opacity: 1;
        }
        @keyframes spin {
            from { transform: rotate(0deg); }
            to { transform: rotate(360deg); }
        }

        .floating-icon {
            position: fixed;
            pointer-events: none;
            z-index: 0;
            font-size: 2.5rem;
            opacity: 0.15;
            animation: floatIcon 8s ease-in-out infinite;
        }
        .floating-icon.f1 { top: 10%; left: 5%; animation-delay: 0s; }
        .floating-icon.f2 { top: 75%; right: 8%; animation-delay: -2s; }
        .floating-icon.f3 { top: 20%; right: 10%; animation-delay: -4s; }
        .floating-icon.f4 { bottom: 15%; left: 12%; animation-delay: -6s; }
        @keyframes floatIcon {
            0%, 100% { transform: translateY(0) rotate(0deg); }
            25% { transform: translateY(-30px) rotate(5deg); }
            50% { transform: translateY(-15px) rotate(-3deg); }
            75% { transform: translateY(-40px) rotate(2deg); }
        }

        .footer {
            text-align: center;
            color: var(--text-muted);
            font-size: 0.8rem;
            letter-spacing: 0.05em;
            margin-top: 1rem;
            background: rgba(255,255,255,0.5);
            backdrop-filter: blur(10px);
            padding: 1.2rem 2rem;
            border-radius: 40px;
            border: 1px solid rgba(0,0,0,0.04);
        }
        .footer .brand {
            font-weight: 700;
            color: var(--text-primary);
        }

        @media (max-width: 700px) {
            .expo-cards {
                flex-direction: column;
                align-items: center;
            }
            .expo-card {
                max-width: 100%;
                width: 100%;
            }
            .floating-icon {
                display: none;
            }
        }
        @media (max-width: 450px) {
            .expo-card {
                padding: 2rem 1.2rem;
            }
        }
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid var(--accent-electric-light);
            outline-offset: 3px;
            border-radius: 12px;
        }