:root {
            --i5tw1i-primary: #FF6C37;
            --i5tw1i-primary-dark: #E05216;
            --i5tw1i-bg-dark: #212121;
            --i5tw1i-text-main: #333333;
            --i5tw1i-text-light: #666666;
            --i5tw1i-gray-bg: #F8F9FA;
            --i5tw1i-border: #E5E5E5;
            --i5tw1i-white: #FFFFFF;
            --i5tw1i-shadow: 0 10px 30px rgba(0,0,0,0.08);
            --i5tw1i-container-width: 1300px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--i5tw1i-text-main);
            line-height: 1.7;
            background-color: var(--i5tw1i-white);
            overflow-x: hidden;
            word-break: keep-all;
        }

        /* Typography */
        h1, h2, h3, h4 {
            color: var(--i5tw1i-bg-dark);
            line-height: 1.3;
            margin-bottom: 1rem;
            white-space: normal;
        }

        p {
            margin-bottom: 1.2rem;
            word-break: break-word;
            overflow-wrap: break-word;
        }

        /* Navigation */
        .i5tw1i-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            z-index: 1000;
            border-bottom: 1px solid var(--i5tw1i-border);
            box-shadow: 0 2px 10px rgba(0,0,0,0.02);
        }

        .i5tw1i-nav-container {
            max-width: var(--i5tw1i-container-width);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            flex-wrap: wrap;
        }

        .i5tw1i-logo {
            display: flex;
            align-items: center;
            min-width: 0;
        }

        .i5tw1i-logo img {
            height: 36px;
            width: auto;
        }

        .i5tw1i-menu {
            display: flex;
            list-style: none;
            gap: 20px;
            flex-wrap: wrap;
            min-width: 0;
        }

        .i5tw1i-menu a {
            text-decoration: none;
            color: var(--i5tw1i-text-main);
            font-size: 0.95rem;
            font-weight: 500;
            transition: color 0.3s;
            padding: 8px 4px;
            border-bottom: 2px solid transparent;
        }

        .i5tw1i-menu a:hover {
            color: var(--i5tw1i-primary);
        }

        .i5tw1i-menu a.active {
            color: var(--i5tw1i-primary);
            border-bottom-color: var(--i5tw1i-primary);
        }

        /* Hero Troubleshooting Section */
        .i5tw1i-hero-diag {
            padding: 160px 24px 80px;
            background: radial-gradient(circle at top right, #FFF5F2 0%, #FFFFFF 50%);
            text-align: center;
        }

        .i5tw1i-hero-content {
            max-width: 900px;
            margin: 0 auto;
        }

        .i5tw1i-badge {
            display: inline-block;
            background: rgba(255, 108, 55, 0.1);
            color: var(--i5tw1i-primary);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: bold;
            margin-bottom: 24px;
        }

        .i5tw1i-hero-title {
            font-size: clamp(2rem, 5vw, 3.5rem);
            font-weight: 800;
            margin-bottom: 24px;
            letter-spacing: -1px;
        }

        .i5tw1i-hero-subtitle {
            font-size: clamp(1rem, 2vw + 0.5rem, 1.25rem);
            color: var(--i5tw1i-text-light);
            margin-bottom: 40px;
        }

        /* Diagnostic Grid */
        .i5tw1i-diag-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
            max-width: var(--i5tw1i-container-width);
            margin: 40px auto;
            padding: 0 24px;
        }

        .i5tw1i-diag-card {
            background: var(--i5tw1i-white);
            border: 1px solid var(--i5tw1i-border);
            border-radius: 16px;
            padding: 40px;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .i5tw1i-diag-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--i5tw1i-shadow);
            border-color: var(--i5tw1i-primary);
        }

        .i5tw1i-diag-icon {
            font-size: 3rem;
            margin-bottom: 24px;
        }

        .i5tw1i-diag-card h3 {
            font-size: 1.5rem;
            margin-bottom: 16px;
        }

        .i5tw1i-diag-list {
            list-style: none;
            text-align: left;
        }

        .i5tw1i-diag-list li {
            position: relative;
            padding-left: 24px;
            margin-bottom: 12px;
            font-size: 0.95rem;
        }

        .i5tw1i-diag-list li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--i5tw1i-primary);
            font-weight: bold;
        }

        /* Orchestration Layers Section */
        .i5tw1i-section-layers {
            padding: 96px 24px;
            background-color: var(--i5tw1i-bg-dark);
            color: var(--i5tw1i-white);
        }

        .i5tw1i-layers-header {
            max-width: var(--i5tw1i-container-width);
            margin: 0 auto 64px;
            text-align: center;
        }

        .i5tw1i-layers-header h2 {
            color: var(--i5tw1i-white);
            font-size: 2.5rem;
        }

        .i5tw1i-layer-item {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            max-width: var(--i5tw1i-container-width);
            margin: 0 auto 80px;
            align-items: center;
        }

        .i5tw1i-layer-item:nth-child(even) {
            flex-direction: row-reverse;
        }

        .i5tw1i-layer-info {
            flex: 1;
            min-width: 300px;
        }

        .i5tw1i-layer-tag {
            color: var(--i5tw1i-primary);
            font-weight: bold;
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 16px;
            display: block;
        }

        .i5tw1i-layer-info h3 {
            color: var(--i5tw1i-white);
            font-size: 2rem;
            margin-bottom: 20px;
        }

        .i5tw1i-layer-caps {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 24px;
        }

        .i5tw1i-cap-tag {
            background: rgba(255,255,255,0.1);
            padding: 6px 14px;
            border-radius: 4px;
            font-size: 0.85rem;
        }

        /* Dynamic Content Section */
        .i5tw1i-dynamic-section {
            padding: 96px 24px;
            max-width: var(--i5tw1i-container-width);
            margin: 0 auto;
        }

        .i5tw1i-news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 24px;
            margin-top: 40px;
        }

        .i5tw1i-news-card {
            border: 1px solid var(--i5tw1i-border);
            padding: 24px;
            border-radius: 12px;
            transition: 0.3s;
        }

        .i5tw1i-news-card:hover {
            background: var(--i5tw1i-gray-bg);
        }

        /* CTA Section */
        .i5tw1i-cta {
            padding: 80px 24px;
            background: var(--i5tw1i-primary);
            text-align: center;
            color: var(--i5tw1i-white);
        }

        .i5tw1i-btn {
            display: inline-block;
            background: var(--i5tw1i-bg-dark);
            color: var(--i5tw1i-white);
            padding: 16px 40px;
            border-radius: 8px;
            text-decoration: none;
            font-weight: bold;
            font-size: 1.1rem;
            transition: transform 0.3s, background 0.3s;
            margin-top: 24px;
        }

        .i5tw1i-btn:hover {
            transform: scale(1.05);
            background: #000;
        }

        /* Footer */
        .i5tw1i-footer {
            background: #f4f4f4;
            padding: 64px 24px;
            border-top: 1px solid var(--i5tw1i-border);
        }

        .i5tw1i-footer-inner {
            max-width: var(--i5tw1i-container-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 40px;
        }

        .i5tw1i-footer-brand {
            flex: 1;
            min-width: 250px;
        }

        .i5tw1i-footer-brand-text {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--i5tw1i-primary);
            margin-bottom: 16px;
        }

        .i5tw1i-footer-links {
            display: flex;
            gap: 60px;
            flex-wrap: wrap;
        }

        .i5tw1i-footer-col h4 {
            margin-bottom: 20px;
            font-size: 1rem;
        }

        .i5tw1i-footer-col ul {
            list-style: none;
        }

        .i5tw1i-footer-col li {
            margin-bottom: 10px;
        }

        .i5tw1i-footer-col a {
            text-decoration: none;
            color: var(--i5tw1i-text-light);
            font-size: 0.9rem;
            transition: color 0.3s;
        }

        .i5tw1i-footer-col a:hover {
            color: var(--i5tw1i-primary);
        }

        .i5tw1i-copyright {
            text-align: center;
            margin-top: 60px;
            padding-top: 30px;
            border-top: 1px solid var(--i5tw1i-border);
            color: var(--i5tw1i-text-light);
            font-size: 0.85rem;
            width: 100%;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .i5tw1i-nav-container {
                height: auto;
                padding: 15px 20px;
            }
            .i5tw1i-menu {
                margin-top: 15px;
                gap: 10px;
                justify-content: center;
            }
            .i5tw1i-hero-diag {
                padding-top: 120px;
            }
            .i5tw1i-layer-item {
                flex-direction: column !important;
                text-align: center;
            }
        }