:root {
            --i5tw1i-primary: #FF6C37;
            --i5tw1i-primary-hover: #e55b2b;
            --i5tw1i-dark: #212121;
            --i5tw1i-dark-light: #323232;
            --i5tw1i-bg: #ffffff;
            --i5tw1i-gray-bg: #f9f9f9;
            --i5tw1i-text: #212121;
            --i5tw1i-text-muted: #6b6b6b;
            --i5tw1i-white: #ffffff;
            --i5tw1i-spacing-unit: 8px;
            --i5tw1i-container-width: 1300px;
            --i5tw1i-radius: 16px;
            --i5tw1i-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--i5tw1i-text);
            background-color: var(--i5tw1i-bg);
            line-height: 1.6;
            word-break: keep-all;
            overflow-x: hidden;
        }

        /* Typography */
        h1, h2, h3, h4 {
            font-weight: 800;
            line-height: 1.2;
            word-break: keep-all;
            white-space: normal;
        }

        p {
            line-height: 1.8;
            word-break: break-word;
            overflow-wrap: break-word;
        }

        /* Navigation */
        .i5tw1i-navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 72px;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            z-index: 1000;
            display: flex;
            align-items: center;
            transition: var(--i5tw1i-transition);
        }

        .i5tw1i-nav-container {
            max-width: var(--i5tw1i-container-width);
            width: 100%;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }

        .i5tw1i-logo {
            flex-shrink: 0;
            min-width: 0;
        }

        .i5tw1i-logo img {
            height: 32px;
            display: block;
        }

        .i5tw1i-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 4px;
            min-width: 0;
        }

        .i5tw1i-menu-item a {
            text-decoration: none;
            color: var(--i5tw1i-text);
            font-size: 14px;
            font-weight: 600;
            padding: 8px 12px;
            border-radius: 8px;
            transition: var(--i5tw1i-transition);
            display: block;
        }

        .i5tw1i-menu-item a:hover {
            background: rgba(255, 108, 55, 0.1);
            color: var(--i5tw1i-primary);
        }

        .i5tw1i-menu-item a.i5tw1i-active {
            color: var(--i5tw1i-primary);
            background: rgba(255, 108, 55, 0.05);
        }

        /* Hero Section - Centered Layout */
        .i5tw1i-hero {
            padding: 160px 24px 80px;
            background: radial-gradient(circle at top right, rgba(255, 108, 55, 0.08), transparent),
                        radial-gradient(circle at bottom left, rgba(0, 115, 230, 0.05), transparent);
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .i5tw1i-hero-tag {
            background: var(--i5tw1i-primary);
            color: white;
            padding: 4px 16px;
            border-radius: 100px;
            font-size: 12px;
            font-weight: 700;
            margin-bottom: 24px;
            display: inline-block;
        }

        .i5tw1i-hero-title {
            font-size: clamp(2rem, 5vw, 3.5rem);
            max-width: 900px;
            margin-bottom: 24px;
            color: var(--i5tw1i-dark);
        }

        .i5tw1i-hero-subtitle {
            font-size: clamp(1rem, 2vw + 0.5rem, 1.25rem);
            color: var(--i5tw1i-text-muted);
            max-width: 750px;
            margin-bottom: 48px;
        }

        /* Download Grid */
        .i5tw1i-download-section {
            padding: 0 24px 96px;
            max-width: var(--i5tw1i-container-width);
            margin: 0 auto;
        }

        .i5tw1i-download-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 32px;
            flex-wrap: wrap;
        }

        .i5tw1i-download-card {
            background: var(--i5tw1i-white);
            border-radius: var(--i5tw1i-radius);
            overflow: hidden;
            border: 1px solid rgba(0,0,0,0.05);
            transition: var(--i5tw1i-transition);
            display: flex;
            flex-direction: column;
            min-width: 0;
            box-shadow: 0 4px 20px rgba(0,0,0,0.02);
        }

        .i5tw1i-download-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.08);
            border-color: rgba(255, 108, 55, 0.2);
        }

        .i5tw1i-card-image {
            height: 220px;
            width: 100%;
            overflow: hidden;
            position: relative;
        }

        .i5tw1i-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--i5tw1i-transition);
        }

        .i5tw1i-download-card:hover .i5tw1i-card-image img {
            transform: scale(1.05);
        }

        .i5tw1i-card-content {
            padding: 32px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
            word-break: break-word;
        }

        .i5tw1i-card-title {
            font-size: 24px;
            margin-bottom: 12px;
            color: var(--i5tw1i-dark);
        }

        .i5tw1i-card-desc {
            color: var(--i5tw1i-text-muted);
            font-size: 15px;
            margin-bottom: 24px;
            flex-grow: 1;
        }

        .i5tw1i-btn-group {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .i5tw1i-btn {
            padding: 12px 24px;
            border-radius: 10px;
            font-weight: 700;
            text-decoration: none;
            text-align: center;
            transition: var(--i5tw1i-transition);
            font-size: 15px;
            flex-grow: 1;
            min-width: 0;
        }

        .i5tw1i-btn-primary {
            background: var(--i5tw1i-primary);
            color: white;
            box-shadow: 0 4px 12px rgba(255, 108, 55, 0.2);
        }

        .i5tw1i-btn-primary:hover {
            background: var(--i5tw1i-primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(255, 108, 55, 0.3);
        }

        .i5tw1i-btn-outline {
            background: transparent;
            border: 2px solid rgba(0,0,0,0.1);
            color: var(--i5tw1i-dark);
        }

        .i5tw1i-btn-outline:hover {
            background: rgba(0,0,0,0.03);
            border-color: rgba(0,0,0,0.2);
        }

        /* API Lifecycle Section */
        .i5tw1i-lifecycle {
            background: var(--i5tw1i-dark);
            color: var(--i5tw1i-white);
            padding: 96px 24px;
        }

        .i5tw1i-lifecycle-container {
            max-width: 1000px;
            margin: 0 auto;
        }

        .i5tw1i-section-header {
            text-align: center;
            margin-bottom: 64px;
        }

        .i5tw1i-section-header h2 {
            font-size: clamp(1.5rem, 4vw, 2.5rem);
            margin-bottom: 16px;
        }

        .i5tw1i-layer-item {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            margin-bottom: 64px;
            align-items: flex-start;
        }

        .i5tw1i-layer-id {
            font-family: monospace;
            color: var(--i5tw1i-primary);
            font-size: 14px;
            font-weight: bold;
            padding: 4px 12px;
            border: 1px solid var(--i5tw1i-primary);
            border-radius: 4px;
            margin-bottom: 16px;
            display: inline-block;
        }

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

        .i5tw1i-layer-title {
            font-size: 28px;
            margin-bottom: 16px;
        }

        .i5tw1i-layer-logic {
            color: #b0b0b0;
            margin-bottom: 24px;
            font-size: 16px;
        }

        .i5tw1i-capabilities {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            list-style: none;
        }

        .i5tw1i-cap-tag {
            background: var(--i5tw1i-dark-light);
            padding: 6px 14px;
            border-radius: 6px;
            font-size: 13px;
            color: #d1d1d1;
            border: 1px solid rgba(255,255,255,0.05);
        }

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

        .i5tw1i-news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
            flex-wrap: wrap;
        }

        /* Footer */
        .i5tw1i-footer {
            background: var(--i5tw1i-gray-bg);
            padding: 80px 24px 40px;
            border-top: 1px solid rgba(0,0,0,0.05);
        }

        .i5tw1i-footer-container {
            max-width: var(--i5tw1i-container-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 48px;
        }

        .i5tw1i-footer-brand {
            flex: 1;
            min-width: 280px;
        }

        .i5tw1i-brand-name {
            font-size: 24px;
            font-weight: 800;
            color: var(--i5tw1i-dark);
            margin-bottom: 16px;
        }

        .i5tw1i-footer-text {
            color: var(--i5tw1i-text-muted);
            max-width: 320px;
            font-size: 14px;
        }

        .i5tw1i-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 64px;
        }

        .i5tw1i-link-group h4 {
            margin-bottom: 20px;
            font-size: 16px;
        }

        .i5tw1i-link-group ul {
            list-style: none;
        }

        .i5tw1i-link-group li {
            margin-bottom: 12px;
        }

        .i5tw1i-link-group a {
            text-decoration: none;
            color: var(--i5tw1i-text-muted);
            font-size: 14px;
            transition: var(--i5tw1i-transition);
        }

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

        .i5tw1i-copyright {
            max-width: var(--i5tw1i-container-width);
            margin: 64px auto 0;
            padding-top: 32px;
            border-top: 1px solid rgba(0,0,0,0.05);
            text-align: center;
            font-size: 13px;
            color: var(--i5tw1i-text-muted);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .i5tw1i-menu {
                display: none; /* In a real site, you'd add a mobile menu toggle here */
            }
        }

        @media (max-width: 768px) {
            .i5tw1i-hero {
                padding-top: 120px;
            }
            .i5tw1i-download-grid {
                grid-template-columns: 1fr;
            }
            .i5tw1i-footer-container {
                flex-direction: column;
            }
            .i5tw1i-footer-links {
                gap: 32px;
            }
        }