* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Poppins', sans-serif;
            background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
            min-height: 100vh;
            padding: 20px;
            color: #333;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
        }

        /* Header */
        .header {
            background: linear-gradient(135deg, #1565c0 0%, #1976d2 50%, #42a5f5 100%);
            border-radius: 25px;
            padding: 50px 40px;
            margin-bottom: 30px;
            box-shadow: 0 15px 40px rgba(21, 101, 192, 0.3);
            animation: fadeInDown 0.8s ease;
            position: relative;
            overflow: hidden;
        }

        .header::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><text x="10" y="50" font-size="40" opacity="0.1" fill="white">log</text></svg>') repeat;
            opacity: 0.1;
        }

        .header-content {
            position: relative;
            z-index: 1;
            text-align: center;
        }

        .header-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.2);
            backdrop-filter: blur(10px);
            color: white;
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 500;
            margin-bottom: 20px;
            border: 2px solid rgba(255, 255, 255, 0.3);
        }

        .header h1 {
            color: white;
            font-size: 3rem;
            font-weight: 700;
            margin-bottom: 15px;
            text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
            letter-spacing: 1px;
        }

        .header .subtitle {
            color: rgba(255, 255, 255, 0.95);
            font-size: 1.3rem;
            font-weight: 400;
            margin-bottom: 20px;
        }

        /* Intro Section */
        .intro-section {
            background: white;
            border-radius: 20px;
            padding: 40px;
            margin-bottom: 30px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
            animation: fadeIn 1s ease;
        }

        .intro-section h2 {
            color: #1565c0;
            font-size: 2rem;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 15px;
        }
        
        .intro-section h3 {
            color: #1976d2;
        }

        .intro-section p {
            font-size: 1.1rem;
            line-height: 1.8;
            color: #555;
        }

        .intro-example-box {
            background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
            border-left: 5px solid #1565c0;
            padding: 20px;
            border-radius: 12px;
            margin-top: 20px;
        }

        .intro-example-box h4 {
            color: #0d47a1;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.1rem;
        }

        .intro-example-box p {
            color: #1565c0;
            font-size: 1.05rem;
            line-height: 1.6;
        }

        /* Laws Grid */
        .laws-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 25px;
            margin-bottom: 30px;
        }

        .law-card {
            background: white;
            border-radius: 20px;
            padding: 30px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            animation: fadeInUp 0.8s ease;
            position: relative;
            overflow: hidden;
        }

        .law-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: linear-gradient(90deg, #1565c0, #42a5f5);
        }

        .law-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
        }

        .law-number {
            display: inline-block;
            background: linear-gradient(135deg, #1565c0, #1976d2);
            color: white;
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 15px;
        }

        .law-card h3 {
            color: #2c3e50;
            font-size: 1.5rem;
            margin-bottom: 20px;
        }

        .formula-box {
            background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
            padding: 20px;
            border-radius: 15px;
            margin: 20px 0;
            text-align: center;
            font-size: 1.3rem;
            font-weight: 600;
            color: #0d47a1;
            font-family: 'Courier New', monospace;
            border-left: 5px solid #1565c0;
        }

        .example-box {
            background: #fff3cd;
            border-left: 5px solid #ffc107;
            padding: 15px;
            border-radius: 10px;
            margin: 15px 0;
        }

        .example-box h4 {
            color: #856404;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .interpretation-box {
            background: #d1ecf1;
            border-left: 5px solid #17a2b8;
            padding: 15px;
            border-radius: 10px;
            margin-top: 15px;
        }

        .interpretation-box h4 {
            color: #0c5460;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        /* Application Section */
        .application-section {
            background: linear-gradient(135deg, #1976d2 0%, #2196f3 100%);
            border-radius: 20px;
            padding: 40px;
            margin-bottom: 30px;
            box-shadow: 0 10px 30px rgba(25, 118, 210, 0.3);
            color: white;
            animation: fadeIn 1.2s ease;
        }

        .application-section h2 {
            font-size: 2rem;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .application-content {
            background: rgba(255, 255, 255, 0.2);
            backdrop-filter: blur(10px);
            border-radius: 15px;
            padding: 25px;
            margin-top: 20px;
        }

        .application-content p {
            line-height: 1.8;
            font-size: 1.05rem;
        }

        /* Practical Applications Section */
        .practical-apps-section {
            background: white;
            border-radius: 20px;
            padding: 40px;
            margin-bottom: 30px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
            animation: fadeIn 1.3s ease;
        }

        .practical-apps-section h2 {
            color: #1565c0;
            font-size: 2rem;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .apps-intro {
            font-size: 1.05rem;
            line-height: 1.8;
            color: #555;
            margin-bottom: 30px;
        }

        .apps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
            margin-bottom: 25px;
        }

        .app-card {
            background: linear-gradient(135deg, #e3f2fd 0%, #f5f5f5 100%);
            padding: 25px;
            border-radius: 15px;
            border-left: 5px solid #1976d2;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .app-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 20px rgba(25, 118, 210, 0.2);
        }

        .app-icon {
            font-size: 2.5rem;
            margin-bottom: 15px;
        }

        .app-card h3 {
            color: #1565c0;
            font-size: 1.3rem;
            margin-bottom: 12px;
        }

        .app-card p {
            color: #555;
            font-size: 1rem;
            line-height: 1.6;
        }

        .apps-note {
            background: linear-gradient(135deg, #1976d2 0%, #42a5f5 100%);
            padding: 20px 25px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            gap: 15px;
            color: white;
        }

        .note-icon {
            font-size: 1.5rem;
            flex-shrink: 0;
        }

        .apps-note p {
            font-size: 1rem;
            line-height: 1.6;
            margin: 0;
        }

        /* Conclusion Section */
        .conclusion-section {
            background: white;
            border-radius: 20px;
            padding: 40px;
            margin-bottom: 30px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
            animation: fadeIn 1.4s ease;
        }

        .conclusion-section h2 {
            color: #1565c0;
            font-size: 2rem;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 15px;
        }

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

        .conclusion-item {
            background: linear-gradient(135deg, #1565c0 0%, #1976d2 100%);
            color: white;
            padding: 20px;
            border-radius: 15px;
            text-align: center;
            font-weight: 500;
            transition: transform 0.3s ease;
        }

        .conclusion-item:hover {
            transform: scale(1.05);
        }

        /* Footer */
        .footer {
            background: #2c3e50;
            border-radius: 0;
            padding: 40px 50px;
            box-shadow: 0 -5px 20px rgba(0, 0, 0, 0.2);
            animation: fadeInUp 0.8s ease;
            margin: 0 -20px -20px -20px;
        }

        .footer-content {
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            gap: 40px;
            align-items: center;
            max-width: 1200px;
            margin: 0 auto;
        }

        .footer-left {
            color: white;
            text-align: left;
        }

        .footer-left h3 {
            font-size: 0.85rem;
            margin-bottom: 10px;
            font-weight: 400;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-left h1 {
            font-size: 0.95rem;
            font-weight: 400;
            margin-bottom: 2px;
            line-height: 1.4;
        }

        .footer-left h2 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #64b5f6;
            margin-top: 10px;
        }

        .footer-center {
            background: linear-gradient(135deg, #42a5f5 0%, #2196f3 100%);
            padding: 30px 50px;
            border-radius: 15px;
            text-align: center;
            box-shadow: 0 5px 20px rgba(66, 165, 245, 0.4);
            min-width: 320px;
        }

        .footer-center .icon {
            font-size: 2.5rem;
            margin-bottom: 10px;
        }

        .footer-center h2 {
            color: white;
            font-size: 1.25rem;
            font-weight: 600;
            line-height: 1.3;
        }

        .footer-right {
            text-align: right;
            color: white;
        }

        .footer-right h3 {
            font-size: 0.95rem;
            margin-bottom: 12px;
            font-weight: 600;
        }

        .footer-right .badge {
            display: flex;
            align-items: center;
            justify-content: flex-end;
            gap: 10px;
            background: rgba(255, 255, 255, 0.08);
            padding: 10px 18px;
            border-radius: 8px;
            margin-top: 10px;
            font-size: 0.85rem;
            transition: background 0.3s ease;
        }

        .footer-right .badge:hover {
            background: rgba(255, 255, 255, 0.12);
        }

        .footer-right .badge:first-of-type span:last-child {
            color: #ffffff;
        }

        .footer-right .badge:last-of-type span:last-child {
            color: #64b5f6;
        }

        .footer-right .badge span:first-child {
            font-size: 1.1rem;
        }

        /* Animations */
        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(40px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @keyframes fadeInDown {
            from {
                opacity: 0;
                transform: translateY(-40px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* Responsive Design */
        @media (max-width: 768px) {
            body {
                padding: 10px;
            }

            .header, .footer {
                padding: 20px;
            }

            .header h1 {
                font-size: 2rem;
            }

            .header .subtitle {
                font-size: 1rem;
            }

            .footer {
                margin: 0 -10px -10px -10px;
                padding: 30px 20px;
            }

            .footer-content {
                grid-template-columns: 1fr;
                gap: 30px;
                text-align: center;
            }

            .footer-left {
                text-align: center;
            }

            .footer-center {
                min-width: auto;
                padding: 25px 30px;
            }

            .footer-right {
                text-align: center;
            }

            .footer-right .badge {
                justify-content: center;
            }

            .intro-section, .application-section, .conclusion-section {
                padding: 25px;
            }

            .practical-apps-section {
                padding: 25px;
            }

            .apps-grid {
                grid-template-columns: 1fr;
            }

            .intro-section h2, .application-section h2, .conclusion-section h2 {
                font-size: 1.5rem;
            }

            .law-card {
                padding: 20px;
            }

            .laws-grid {
                grid-template-columns: 1fr;
            }

            .conclusion-list {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 480px) {
            .header {
                padding: 25px 20px;
            }

            .header h1 {
                font-size: 1.5rem;
            }

            .header .subtitle {
                font-size: 0.9rem;
            }

            .footer-center {
                padding: 20px 25px;
            }

            .footer-center h2 {
                font-size: 1.1rem;
            }

            .formula-box {
                font-size: 1rem;
                padding: 15px;
            }
        }