:root {
            --x7bg-primary: #EE4124;
            --x7bg-primary-hover: #d63a1f;
            --x7bg-text-dark: #1d1d1f;
            --x7bg-text-muted: #86868b;
            --x7bg-bg-light: #f5f5f7;
            --x7bg-white: #ffffff;
            --x7bg-glass: rgba(255, 255, 255, 0.8);
            --x7bg-gap: 8px;
            --x7bg-max-w: 1100px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
            background-color: var(--x7bg-white);
            color: var(--x7bg-text-dark);
            line-height: 1.6;
            overflow-x: hidden;
            word-break: keep-all;
            overflow-wrap: break-word;
        }

        /* Layout Helpers */
        .x7bg-container {
            max-width: var(--x7bg-max-w);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        .x7bg-flex {
            display: flex;
            flex-wrap: wrap;
        }

        .x7bg-flex-child {
            min-width: 0;
        }

        /* Typography */
        h1 { font-size: clamp(2rem, 5vw, 3.5rem); line-height: 1.1; font-weight: 700; margin-bottom: 24px; }
        h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); font-weight: 600; margin-bottom: 16px; }
        p { font-size: clamp(1rem, 2vw + 0.5rem, 1.2rem); color: var(--x7bg-text-muted); line-height: 1.8; }

        /* Navigation */
        .x7bg-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--x7bg-glass);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
        }

        .x7bg-nav-wrapper {
            height: 64px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }

        .x7bg-logo img {
            height: 32px;
            width: auto;
            display: block;
        }

        .x7bg-nav-links {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 24px;
        }

        .x7bg-nav-links a {
            text-decoration: none;
            color: var(--x7bg-text-dark);
            font-size: 14px;
            font-weight: 500;
            transition: color 0.3s;
        }

        .x7bg-nav-links a:hover {
            color: var(--x7bg-primary);
        }

        /* Hero Section */
        .x7bg-hero {
            padding: 160px 0 96px;
            background: radial-gradient(circle at 90% 10%, rgba(238, 65, 36, 0.05), transparent 40%);
            text-align: center;
        }

        .x7bg-hero-content {
            max-width: 800px;
            margin: 0 auto;
        }

        .x7bg-slogan {
            display: inline-block;
            background: rgba(238, 65, 36, 0.1);
            color: var(--x7bg-primary);
            padding: 8px 16px;
            border-radius: 32px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
        }

        .x7bg-cta-group {
            margin-top: 48px;
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .x7bg-btn-primary {
            background: var(--x7bg-primary);
            color: white;
            padding: 16px 48px;
            border-radius: 12px;
            text-decoration: none;
            font-weight: 600;
            font-size: 18px;
            transition: transform 0.3s, background 0.3s, box-shadow 0.3s;
            box-shadow: 0 8px 20px rgba(238, 65, 36, 0.2);
        }

        .x7bg-btn-primary:hover {
            background: var(--x7bg-primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 12px 24px rgba(238, 65, 36, 0.3);
        }

        .x7bg-btn-secondary {
            background: var(--x7bg-bg-light);
            color: var(--x7bg-text-dark);
            padding: 16px 32px;
            border-radius: 12px;
            text-decoration: none;
            font-weight: 600;
            font-size: 18px;
            transition: background 0.3s;
        }

        .x7bg-btn-secondary:hover {
            background: #e8e8ed;
        }

        /* Efficiency Solutions Section */
        .x7bg-solutions {
            padding: 96px 0;
            background-color: var(--x7bg-bg-light);
        }

        .x7bg-section-title {
            text-align: center;
            margin-bottom: 64px;
        }

        .x7bg-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
        }

        .x7bg-solution-card {
            background: var(--x7bg-white);
            padding: 40px;
            border-radius: 24px;
            transition: transform 0.3s, box-shadow 0.3s;
            display: flex;
            flex-direction: column;
            border: 1px solid rgba(0,0,0,0.03);
        }

        .x7bg-solution-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.08);
        }

        .x7bg-scenario-tag {
            font-size: 12px;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--x7bg-primary);
            font-weight: 700;
            margin-bottom: 16px;
        }

        .x7bg-tool-list {
            margin: 24px 0;
            list-style: none;
        }

        .x7bg-tool-item {
            padding: 12px 0;
            border-bottom: 1px solid rgba(0,0,0,0.05);
            font-size: 15px;
            color: var(--x7bg-text-dark);
            display: flex;
            align-items: center;
        }

        .x7bg-tool-item::before {
            content: "•";
            color: var(--x7bg-primary);
            margin-right: 12px;
            font-weight: bold;
        }

        .x7bg-boost-badge {
            margin-top: auto;
            background: rgba(238, 65, 36, 0.05);
            padding: 12px;
            border-radius: 12px;
            text-align: center;
        }

        .x7bg-boost-val {
            font-size: 24px;
            font-weight: 800;
            color: var(--x7bg-primary);
        }

        .x7bg-boost-label {
            font-size: 12px;
            color: var(--x7bg-text-muted);
        }

        /* Abstract Visual Decor */
        .x7bg-visual-decor {
            position: relative;
            height: 200px;
            margin-top: 48px;
            background: linear-gradient(135deg, #fff 0%, #f9f9f9 100%);
            border-radius: 24px;
            overflow: hidden;
            border: 1px solid rgba(0,0,0,0.05);
        }

        .x7bg-input-mockup {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 80%;
            height: 40px;
            background: white;
            border-radius: 8px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.05);
            display: flex;
            align-items: center;
            padding: 0 16px;
        }

        .x7bg-cursor {
            width: 2px;
            height: 20px;
            background: var(--x7bg-primary);
            animation: x7bg-blink 1s infinite;
        }

        @keyframes x7bg-blink {
            50% { opacity: 0; }
        }

        /* Footer */
        .x7bg-footer {
            padding: 80px 0 48px;
            background: var(--x7bg-white);
            border-top: 1px solid rgba(0,0,0,0.05);
        }

        .x7bg-footer-content {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            gap: 48px;
        }

        .x7bg-footer-brand h3 {
            font-size: 20px;
            margin-bottom: 16px;
            color: var(--x7bg-primary);
        }

        .x7bg-footer-links {
            display: flex;
            gap: 64px;
            flex-wrap: wrap;
        }

        .x7bg-footer-col h4 {
            font-size: 14px;
            margin-bottom: 24px;
            color: var(--x7bg-text-dark);
        }

        .x7bg-footer-col ul {
            list-style: none;
        }

        .x7bg-footer-col li {
            margin-bottom: 12px;
        }

        .x7bg-footer-col a {
            text-decoration: none;
            color: var(--x7bg-text-muted);
            font-size: 14px;
            transition: color 0.3s;
        }

        .x7bg-footer-col a:hover {
            color: var(--x7bg-primary);
        }

        .x7bg-copyright {
            margin-top: 64px;
            padding-top: 24px;
            border-top: 1px solid rgba(0,0,0,0.05);
            text-align: center;
            font-size: 12px;
            color: var(--x7bg-text-muted);
        }

        /* Responsive */
        @media (max-width: 768px) {
            .x7bg-nav-links {
                display: none; /* In a real project, add a mobile menu */
            }
            .x7bg-footer-content {
                flex-direction: column;
                text-align: center;
            }
            .x7bg-footer-links {
                justify-content: center;
                gap: 32px;
            }
            .x7bg-hero {
                padding: 120px 0 64px;
            }
            .x7bg-grid {
                grid-template-columns: 1fr;
            }
        }