:root {
            --x7bg-primary: #ff4d2d;
            --x7bg-primary-dark: #e63e1c;
            --x7bg-secondary: #1a1a1a;
            --x7bg-accent: #0066ff;
            --x7bg-text: #2d3436;
            --x7bg-text-light: #636e72;
            --x7bg-bg: #ffffff;
            --x7bg-bg-alt: #f9f9fb;
            --x7bg-card-shadow: 0 10px 30px rgba(0,0,0,0.08);
            --x7bg-max-width: 1300px;
        }

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
            color: var(--x7bg-text);
            line-height: 1.6;
            background-color: var(--x7bg-bg);
            overflow-x: hidden;
        }

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

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

        .x7bg-grid {
            display: grid;
            gap: 32px;
        }

        /* Typography */
        h1, h2, h3 {
            line-height: 1.2;
            word-break: keep-all;
            overflow-wrap: break-word;
            white-space: normal;
        }

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

        /* Navigation */
        .x7bg-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(15px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            transition: all 0.3s ease;
        }

        .x7bg-nav-wrapper {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 80px;
        }

        .x7bg-logo {
            flex: 0 0 auto;
            min-width: 0;
        }

        .x7bg-logo img {
            height: 40px;
            display: block;
        }

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

        .x7bg-menu a {
            text-decoration: none;
            color: var(--x7bg-text);
            font-weight: 500;
            font-size: 15px;
            transition: color 0.3s;
            position: relative;
        }

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

        /* Hero Section - Unique Layered Design */
        .x7bg-hero {
            padding: 160px 0 100px;
            background: radial-gradient(circle at 90% 10%, rgba(255, 77, 45, 0.05) 0%, rgba(255,255,255,1) 50%);
            position: relative;
            overflow: hidden;
        }

        .x7bg-hero-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            align-items: center;
            gap: 48px;
        }

        .x7bg-hero-content {
            min-width: 0;
        }

        .x7bg-hero-tag {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(255, 77, 45, 0.1);
            color: var(--x7bg-primary);
            border-radius: 50px;
            font-weight: 600;
            font-size: 14px;
            margin-bottom: 24px;
        }

        .x7bg-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem);
            font-weight: 800;
            color: var(--x7bg-secondary);
            margin-bottom: 24px;
            letter-spacing: -1px;
        }

        .x7bg-hero-subtitle {
            font-size: clamp(1.1rem, 1.5vw + 0.5rem, 1.4rem);
            color: var(--x7bg-text-light);
            margin-bottom: 40px;
            max-width: 600px;
        }

        .x7bg-btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .x7bg-btn {
            display: inline-flex;
            align-items: center;
            padding: 16px 40px;
            border-radius: 12px;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .x7bg-btn-primary {
            background: var(--x7bg-primary);
            color: white;
            box-shadow: 0 10px 20px rgba(255, 77, 45, 0.2);
        }

        .x7bg-btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 30px rgba(255, 77, 45, 0.3);
            background: var(--x7bg-primary-dark);
        }

        /* Efficiency Solutions Section */
        .x7bg-solutions {
            padding: 100px 0;
            background-color: var(--x7bg-bg-alt);
        }

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

        .x7bg-section-title {
            font-size: clamp(2rem, 3vw + 0.5rem, 2.8rem);
            margin-bottom: 16px;
        }

        .x7bg-solution-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 32px;
        }

        .x7bg-solution-card {
            background: white;
            padding: 48px;
            border-radius: 24px;
            transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
            border: 1px solid rgba(0,0,0,0.03);
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .x7bg-solution-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--x7bg-card-shadow);
        }

        .x7bg-solution-icon-wrap {
            width: 64px;
            height: 64px;
            background: var(--x7bg-bg-alt);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 32px;
            font-size: 24px;
            font-weight: bold;
            color: var(--x7bg-primary);
        }

        .x7bg-solution-scenario {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 24px;
            color: var(--x7bg-secondary);
        }

        .x7bg-tool-list {
            list-style: none;
            margin-bottom: 32px;
            flex-grow: 1;
        }

        .x7bg-tool-item {
            position: relative;
            padding-left: 24px;
            margin-bottom: 12px;
            font-size: 15px;
            color: var(--x7bg-text-light);
        }

        .x7bg-tool-item::before {
            content: "";
            position: absolute;
            left: 0;
            top: 10px;
            width: 8px;
            height: 2px;
            background: var(--x7bg-primary);
        }

        .x7bg-boost-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            color: var(--x7bg-primary);
            padding-top: 16px;
            border-top: 1px solid #eee;
        }

        /* Dynamic Content Section */
        .x7bg-dynamic-sec {
            padding: 100px 0;
        }

        .x7bg-feature-split {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 64px;
            margin-bottom: 80px;
        }

        .x7bg-feature-split:nth-child(even) {
            flex-direction: row-reverse;
        }

        .x7bg-feature-text {
            flex: 1;
            min-width: 300px;
        }

        .x7bg-feature-visual {
            flex: 1;
            min-width: 300px;
            background: linear-gradient(135deg, #f3f3f3 0%, #e9e9e9 100%);
            height: 400px;
            border-radius: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }

        .x7bg-visual-box {
            width: 80%;
            height: 60%;
            background: white;
            border-radius: 16px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.1);
            padding: 24px;
        }

        /* Footer */
        .x7bg-footer {
            background: var(--x7bg-secondary);
            color: #fff;
            padding: 80px 0 40px;
        }

        .x7bg-footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 48px;
            margin-bottom: 64px;
        }

        .x7bg-footer-brand h4 {
            font-size: 24px;
            margin-bottom: 24px;
            color: #fff;
        }

        .x7bg-footer-links h5 {
            font-size: 16px;
            margin-bottom: 24px;
            color: rgba(255,255,255,0.5);
            text-transform: uppercase;
            letter-spacing: 1px;
        }

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

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

        .x7bg-footer-links a {
            color: rgba(255,255,255,0.8);
            text-decoration: none;
            transition: color 0.3s;
        }

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

        .x7bg-copyright {
            text-align: center;
            padding-top: 40px;
            border-top: 1px solid rgba(255,255,255,0.05);
            font-size: 14px;
            color: rgba(255,255,255,0.4);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .x7bg-hero-grid {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .x7bg-hero-content {
                display: flex;
                flex-direction: column;
                align-items: center;
            }
            .x7bg-hero-subtitle {
                margin-left: auto;
                margin-right: auto;
            }
            .x7bg-btn-group {
                justify-content: center;
            }
        }

        @media (max-width: 768px) {
            .x7bg-nav-wrapper {
                height: 70px;
            }
            .x7bg-menu {
                display: none; /* In real project, implement mobile toggle */
            }
            .x7bg-solution-grid {
                grid-template-columns: 1fr;
            }
            .x7bg-feature-split {
                gap: 32px;
            }
        }