:root {
            --primary-color: #003366;
            --accent-color: #e67e23;
            --bg-light: #f4f7f6;
            --border-color: #e0e0e0;
            --text-dark: #333333;
            --text-light: #555555;
        }

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

        body {
            font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-dark);
            background: var(--bg-light);
        }

        /* Hero Banner */
        .hero-banner {
            background: linear-gradient(135deg, var(--primary-color) 0%, #004080 100%);
            color: white;
            padding: 60px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero-banner::before {
            content: "";
            position: absolute;
            top: -50%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: rgba(255, 255, 255, 0.03);
            border-radius: 50%;
        }

        .hero-banner::after {
            content: "";
            position: absolute;
            bottom: -30%;
            left: -15%;
            width: 500px;
            height: 500px;
            background: rgba(255, 255, 255, 0.03);
            border-radius: 50%;
        }

        .hero-content {
            max-width: 1280px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
        }

        .hero-banner h1 {
            font-size: 2.8em;
            font-weight: 700;
            margin-bottom: 15px;
            letter-spacing: -0.5px;
        }

        .hero-banner .subtitle {
            font-size: 1.2em;
            opacity: 0.95;
            font-weight: 500;
            text-transform: uppercase;
            letter-spacing: 1.5px;
        }

        .hero-banner .accent-line {
            width: 100px;
            height: 4px;
            background: var(--accent-color);
            margin: 20px auto 0;
            border-radius: 2px;
        }

        /* Container */
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Feature Cards Section */
        .features-section {
            padding: 50px 0;
        }

        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
            margin-top: 30px;
        }

        .feature-card {
            background: white;
            border-radius: 12px;
            padding: 30px;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
            border-top: 5px solid var(--primary-color);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 5px;
            height: 100%;
            background: var(--accent-color);
            transform: scaleY(0);
            transition: transform 0.3s ease;
        }

        .feature-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 35px rgba(0, 51, 102, 0.15);
        }

        .feature-card:hover::before {
            transform: scaleY(1);
        }

        .feature-icon {
            font-size: 2.5em;
            margin-bottom: 15px;
            display: block;
        }

        .feature-title {
            color: var(--primary-color);
            font-size: 1.2em;
            font-weight: 700;
            margin-bottom: 12px;
            display: block;
        }

        .feature-card p {
            color: var(--text-light);
            line-height: 1.7;
            margin: 0;
        }

        /* Safety Section */
        .safety-section {
            background: white;
            border-radius: 12px;
            padding: 45px 40px;
            margin: 40px 0;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
            border-left: 6px solid var(--accent-color);
        }

        .safety-section h2 {
            color: var(--primary-color);
            font-size: 1.8em;
            font-weight: 700;
            margin-bottom: 30px;
            display: flex;
            align-items: center;
        }

        .safety-section h2::before {
            content: "🛡️";
            margin-right: 15px;
            font-size: 1.2em;
        }

        .qa-group {
            background: var(--bg-light);
            padding: 25px;
            border-radius: 10px;
            margin-bottom: 20px;
            border-left: 4px solid var(--primary-color);
        }

        .qa-question {
            color: var(--primary-color);
            font-size: 1.15em;
            font-weight: 700;
            margin-bottom: 10px;
            display: flex;
            align-items: flex-start;
        }

        .qa-question::before {
            content: "Q:";
            background: var(--accent-color);
            color: white;
            padding: 2px 10px;
            border-radius: 4px;
            margin-right: 12px;
            font-size: 0.9em;
            flex-shrink: 0;
        }

        .qa-answer {
            color: var(--text-light);
            line-height: 1.8;
            padding-left: 40px;
        }

        .warning-box {
            background: linear-gradient(135deg, #ffebee 0%, #ffcdd2 100%);
            border: 2px solid #ef5350;
            border-radius: 8px;
            padding: 20px;
            margin-top: 15px;
            margin-left: 40px;
            position: relative;
        }

        .warning-box::before {
            content: "⚠️";
            position: absolute;
            left: -15px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 2em;
            background: white;
            padding: 5px;
            border-radius: 50%;
        }

        .warning-box strong {
            color: #c62828;
            display: block;
            margin-bottom: 8px;
            font-size: 1.1em;
        }

        .warning-box p {
            color: #b71c1c;
            font-weight: 600;
            line-height: 1.7;
            margin: 0;
        }

        /* Specifications Section */
        .specs-section {
            background: white;
            border-radius: 12px;
            padding: 45px 40px;
            margin: 40px 0;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
        }

        .section-title {
            color: var(--primary-color);
            font-size: 1.8em;
            font-weight: 700;
            margin-bottom: 30px;
            padding-left: 20px;
            border-left: 6px solid var(--accent-color);
        }

        .table-wrapper {
            overflow-x: auto;
            border-radius: 10px;
            box-shadow: 0 3px 15px rgba(0, 0, 0, 0.08);
            border: 2px solid var(--border-color);
        }

        .spec-table {
            width: 100%;
            min-width: 600px;
            border-collapse: collapse;
            background: white;
        }

        .spec-table thead th {
            background: var(--primary-color);
            color: white;
            padding: 18px 15px;
            text-align: center;
            font-weight: 600;
            font-size: 1.05em;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .spec-table tbody td {
            padding: 15px;
            text-align: center;
            border-bottom: 1px solid var(--border-color);
            color: var(--text-light);
        }

        .spec-table tbody tr:nth-child(even) {
            background: var(--bg-light);
        }

        .spec-table tbody tr:hover {
            background: #e8f4f8;
        }

        .spec-table tbody td:first-child {
            font-weight: 700;
            color: var(--primary-color);
        }

        /* Gallery Section */
        .gallery-section {
            background: white;
            border-radius: 12px;
            padding: 45px 40px;
            margin: 40px 0;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
        }

        .gallery-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 25px;
            margin-top: 30px;
        }

        .gallery-item {
            background: var(--bg-light);
            border-radius: 12px;
            padding: 20px;
            text-align: center;
            border: 2px solid var(--border-color);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .gallery-item::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--accent-color);
            transform: scaleX(0);
            transition: transform 0.3s ease;
        }

        .gallery-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(230, 126, 35, 0.2);
            border-color: var(--accent-color);
        }

        .gallery-item:hover::before {
            transform: scaleX(1);
        }

        .gallery-item img {
            max-width: 100%;
            height: auto;
            border-radius: 8px;
            margin-bottom: 15px;
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
        }

        .gallery-caption {
            color: var(--text-dark);
            font-weight: 600;
            font-size: 0.95em;
        }

        /* Responsive Design */
        @media (max-width: 768px) {
            .hero-banner {
                padding: 40px 25px;
            }

            .hero-banner h1 {
                font-size: 2em;
            }

            .hero-banner .subtitle {
                font-size: 1em;
            }

            .features-section,
            .safety-section,
            .specs-section,
            .gallery-section {
                padding: 30px 25px;
            }

            .section-title,
            .safety-section h2 {
                font-size: 1.5em;
            }

            .feature-grid,
            .gallery-grid {
                grid-template-columns: 1fr;
            }

            .qa-answer,
            .warning-box {
                margin-left: 0;
                padding-left: 20px;
            }

            .warning-box::before {
                left: -10px;
                font-size: 1.5em;
            }
        }

        @media (max-width: 480px) {
            body {
                font-size: 15px;
            }

            .hero-banner {
                padding: 30px 20px;
            }

            .hero-banner h1 {
                font-size: 1.7em;
            }

            .feature-card,
            .qa-group {
                padding: 20px;
            }

            .safety-section,
            .specs-section,
            .gallery-section {
                padding: 25px 20px;
            }
        }