:root {
            --w87eju-primary: #FF4B2B;
            --w87eju-primary-grad: linear-gradient(135deg, #FF416C 0%, #FF4B2B 100%);
            --w87eju-secondary: #2F3542;
            --w87eju-bg: #FFFFFF;
            --w87eju-bg-soft: #F9FBFF;
            --w87eju-text: #2c3e50;
            --w87eju-text-light: #7f8c8d;
            --w87eju-border: #e1e8ed;
            --w87eju-radius: 16px;
            --w87eju-spacing: 8px;
        }

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
            color: var(--w87eju-text);
            background-color: var(--w87eju-bg);
            line-height: 1.7;
            overflow-x: hidden;
            word-break: keep-all;
        }

        .w87eju-container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 calc(var(--w87eju-spacing) * 3);
        }

        /* Navigation */
        .w87eju-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--w87eju-border);
            transition: all 0.3s ease;
        }

        .w87eju-nav-wrapper {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            height: 80px;
            min-width: 0;
        }

        .w87eju-logo {
            min-width: 0;
            flex-shrink: 0;
        }

        .w87eju-logo img {
            height: 40px;
            display: block;
        }

        .w87eju-nav {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: calc(var(--w87eju-spacing) * 3);
            min-width: 0;
        }

        .w87eju-nav li {
            min-width: 0;
        }

        .w87eju-nav a {
            text-decoration: none;
            color: var(--w87eju-text);
            font-weight: 500;
            font-size: 15px;
            transition: color 0.3s;
            white-space: nowrap;
        }

        .w87eju-nav a:hover, .w87eju-nav a.active {
            color: var(--w87eju-primary);
        }

        /* Hero Section */
        .w87eju-hero {
            padding-top: 160px;
            padding-bottom: 96px;
            background: radial-gradient(circle at top right, #fff5f3 0%, #ffffff 50%);
            text-align: center;
            overflow: hidden;
        }

        .w87eju-hero-content {
            max-width: 800px;
            margin: 0 auto;
            word-break: break-word;
        }

        .w87eju-hero h1 {
            font-size: clamp(2rem, 5vw + 1rem, 3.5rem);
            line-height: 1.2;
            margin-bottom: calc(var(--w87eju-spacing) * 3);
            background: var(--w87eju-primary-grad);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            font-weight: 800;
        }

        .w87eju-hero p {
            font-size: clamp(1.1rem, 2vw + 0.5rem, 1.3rem);
            color: var(--w87eju-text-light);
            margin-bottom: calc(var(--w87eju-spacing) * 6);
        }

        /* Installation Guide Section */
        .w87eju-section-guide {
            padding: 96px 0;
            background-color: var(--w87eju-bg-soft);
        }

        .w87eju-guide-grid {
            display: flex;
            flex-wrap: wrap;
            gap: calc(var(--w87eju-spacing) * 4);
            margin-top: 48px;
        }

        .w87eju-guide-card {
            flex: 1;
            min-width: 280px;
            background: #fff;
            padding: 40px;
            border-radius: var(--w87eju-radius);
            box-shadow: 0 10px 30px rgba(0,0,0,0.03);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            position: relative;
            border: 1px solid transparent;
        }

        .w87eju-guide-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 40px rgba(255, 75, 43, 0.08);
            border-color: rgba(255, 75, 43, 0.1);
        }

        .w87eju-step-num {
            font-size: 48px;
            font-weight: 900;
            color: rgba(255, 75, 43, 0.1);
            position: absolute;
            top: 20px;
            right: 30px;
        }

        .w87eju-guide-card h3 {
            margin-bottom: 16px;
            font-size: 22px;
            color: var(--w87eju-secondary);
        }

        /* Matrix Section */
        .w87eju-section-matrix {
            padding: 96px 0;
        }

        .w87eju-matrix-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
            margin-top: 48px;
        }

        .w87eju-matrix-item {
            padding: 32px;
            border-radius: var(--w87eju-radius);
            background: #fff;
            border-left: 4px solid var(--w87eju-primary);
            box-shadow: 4px 4px 20px rgba(0,0,0,0.02);
            min-width: 0;
        }

        .w87eju-matrix-name {
            font-size: 20px;
            font-weight: bold;
            margin-bottom: 12px;
            display: block;
        }

        .w87eju-tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 16px;
        }

        .w87eju-tag {
            background: #fdf2f0;
            color: var(--w87eju-primary);
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
        }

        /* Dynamic Section */
        .w87eju-dynamic-section {
            padding: 64px 0;
            background: #f8f9fa;
        }

        .w87eju-news-list {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
        }

        .w87eju-news-item {
            flex: 1;
            min-width: 300px;
            background: #fff;
            padding: 24px;
            border-radius: 12px;
            text-decoration: none;
            color: inherit;
            border: 1px solid var(--w87eju-border);
        }

        /* Footer */
        .w87eju-footer {
            background: var(--w87eju-secondary);
            color: #fff;
            padding: 64px 0 32px;
        }

        .w87eju-footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 48px;
            margin-bottom: 48px;
        }

        .w87eju-footer-brand h2 {
            font-size: 24px;
            margin-bottom: 16px;
            color: #fff;
        }

        .w87eju-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
        }

        .w87eju-footer-group h4 {
            margin-bottom: 20px;
            color: #a4b0be;
            text-transform: uppercase;
            font-size: 14px;
            letter-spacing: 1px;
        }

        .w87eju-footer-group ul {
            list-style: none;
        }

        .w87eju-footer-group a {
            color: #ced6e0;
            text-decoration: none;
            font-size: 14px;
            display: block;
            margin-bottom: 10px;
            transition: color 0.3s;
        }

        .w87eju-footer-group a:hover {
            color: var(--w87eju-primary);
        }

        .w87eju-copyright {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 32px;
            text-align: center;
            font-size: 13px;
            color: #747d8c;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .w87eju-nav {
                display: none; /* In a real scenario, this would be a mobile menu */
            }
            .w87eju-hero {
                padding-top: 120px;
                padding-bottom: 64px;
            }
            .w87eju-guide-card {
                padding: 30px;
            }
        }