:root {
            --w87eju-primary: #EE4122;
            --w87eju-primary-dark: #D3361B;
            --w87eju-secondary: #2C3E50;
            --w87eju-accent: #007AFF;
            --w87eju-bg: #FFFFFF;
            --w87eju-gray-light: #F8F9FA;
            --w87eju-text: #1D1D1F;
            --w87eju-text-muted: #6E6E73;
            --w87eju-container-width: 1320px;
            --w87eju-radius: 16px;
            --w87eju-transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--w87eju-bg);
            color: var(--w87eju-text);
            line-height: 1.6;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

        .w87eju-container {
            max-width: var(--w87eju-container-width);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* Typography */
        h1, h2, h3 {
            line-height: 1.2;
            font-weight: 700;
            word-break: keep-all;
            white-space: normal;
        }

        h1 { font-size: clamp(2rem, 5vw + 1rem, 4rem); margin-bottom: 24px; }
        h2 { font-size: clamp(1.5rem, 3vw + 0.5rem, 2.5rem); margin-bottom: 32px; text-align: center; }
        p { font-size: clamp(1rem, 2vw + 0.5rem, 1.25rem); line-height: 1.8; word-break: break-word; overflow-wrap: break-word; }

        /* Navigation */
        .w87eju-navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 72px;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            z-index: 1000;
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            display: flex;
            align-items: center;
        }

        .w87eju-nav-inner {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
        }

        .w87eju-logo {
            flex: 0 0 auto;
            min-width: 0;
            height: 40px;
        }

        .w87eju-logo img {
            height: 100%;
            width: auto;
        }

        .w87eju-nav-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 24px;
            margin-left: 48px;
        }

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

        .w87eju-nav-link {
            text-decoration: none;
            color: var(--w87eju-text);
            font-size: 15px;
            font-weight: 500;
            transition: var(--w87eju-transition);
            position: relative;
            padding: 8px 0;
        }

        .w87eju-nav-link:hover {
            color: var(--w87eju-primary);
        }

        .w87eju-nav-link.w87eju-active {
            color: var(--w87eju-primary);
        }

        .w87eju-nav-link.w87eju-active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--w87eju-primary);
            border-radius: 2px;
        }

        /* Hero Section - Unique Floating Layout */
        .w87eju-hero {
            padding: 160px 0 96px;
            background: radial-gradient(circle at 90% 10%, rgba(238, 65, 34, 0.08), transparent 40%),
                        radial-gradient(circle at 10% 90%, rgba(0, 122, 255, 0.05), transparent 40%);
            position: relative;
            overflow: hidden;
        }

        .w87eju-hero-grid {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 64px;
        }

        .w87eju-hero-text {
            flex: 1 1 500px;
            min-width: 0;
        }

        .w87eju-hero-visual {
            flex: 1 1 500px;
            min-width: 0;
            position: relative;
        }

        .w87eju-hero-visual img {
            width: 100%;
            height: auto;
            border-radius: var(--w87eju-radius);
            box-shadow: 0 40px 80px rgba(0, 0, 0, 0.12);
            transition: var(--w87eju-transition);
        }

        .w87eju-hero-visual:hover img {
            transform: translateY(-10px) scale(1.02);
        }

        .w87eju-tagline {
            color: var(--w87eju-primary);
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 16px;
            display: block;
        }

        .w87eju-btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 40px;
        }

        .w87eju-btn {
            padding: 16px 40px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            font-size: 18px;
            transition: var(--w87eju-transition);
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }

        .w87eju-btn-main {
            background: var(--w87eju-primary);
            color: white;
            box-shadow: 0 10px 20px rgba(238, 65, 34, 0.3);
        }

        .w87eju-btn-main:hover {
            background: var(--w87eju-primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 15px 30px rgba(238, 65, 34, 0.4);
        }

        .w87eju-btn-outline {
            background: transparent;
            border: 2px solid var(--w87eju-text);
            color: var(--w87eju-text);
        }

        .w87eju-btn-outline:hover {
            background: var(--w87eju-text);
            color: white;
            transform: translateY(-3px);
        }

        /* Matrix Section - Productivity Accelerator */
        .w87eju-matrix {
            padding: 96px 0;
            background: var(--w87eju-gray-light);
        }

        .w87eju-matrix-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
            gap: 32px;
        }

        .w87eju-matrix-card {
            background: white;
            padding: 48px;
            border-radius: var(--w87eju-radius);
            border: 1px solid rgba(0, 0, 0, 0.05);
            transition: var(--w87eju-transition);
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .w87eju-matrix-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.08);
        }

        .w87eju-matrix-title {
            font-size: 24px;
            margin-bottom: 16px;
            color: var(--w87eju-primary);
        }

        .w87eju-matrix-list {
            list-style: none;
            margin: 24px 0;
        }

        .w87eju-matrix-list li {
            position: relative;
            padding-left: 24px;
            margin-bottom: 12px;
            color: var(--w87eju-text-muted);
        }

        .w87eju-matrix-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--w87eju-accent);
            font-weight: bold;
        }

        .w87eju-matrix-usecase {
            margin-top: auto;
            padding-top: 24px;
            border-top: 1px dashed #DDD;
            font-size: 14px;
            color: var(--w87eju-text);
            font-style: italic;
        }

        /* Mobile App Section */
        .w87eju-mobile-section {
            padding: 96px 0;
        }

        .w87eju-mobile-wrap {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            background: var(--w87eju-text);
            border-radius: 32px;
            color: white;
            overflow: hidden;
        }

        .w87eju-mobile-content {
            flex: 1 1 400px;
            padding: 64px;
            min-width: 0;
        }

        .w87eju-mobile-img {
            flex: 1 1 400px;
            min-width: 0;
            line-height: 0;
        }

        .w87eju-mobile-img img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }

        .w87eju-qr-group {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 24px;
            margin-top: 32px;
        }

        .w87eju-qr-box {
            background: white;
            padding: 12px;
            border-radius: 12px;
            width: 120px;
            height: 120px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .w87eju-qr-box img {
            width: 100%;
            height: auto;
        }

        /* Security Guarantee */
        .w87eju-security {
            padding: 96px 0;
            text-align: center;
        }

        .w87eju-security-img {
            max-width: 800px;
            margin: 48px auto 0;
        }

        .w87eju-security-img img {
            width: 100%;
            height: auto;
            border-radius: var(--w87eju-radius);
        }

        /* Footer */
        .w87eju-footer {
            background: var(--w87eju-gray-light);
            padding: 64px 0 32px;
            border-top: 1px solid rgba(0, 0, 0, 0.05);
        }

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

        .w87eju-footer-brand {
            flex: 1 1 300px;
            min-width: 0;
        }

        .w87eju-footer-brand-name {
            font-size: 24px;
            font-weight: 800;
            color: var(--w87eju-primary);
            margin-bottom: 16px;
        }

        .w87eju-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 64px;
            flex: 2 1 600px;
            min-width: 0;
        }

        .w87eju-footer-col {
            flex: 1 1 150px;
            min-width: 0;
        }

        .w87eju-footer-col h4 {
            margin-bottom: 24px;
            font-size: 16px;
        }

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

        .w87eju-footer-col li {
            margin-bottom: 12px;
        }

        .w87eju-footer-col a {
            text-decoration: none;
            color: var(--w87eju-text-muted);
            font-size: 14px;
            transition: var(--w87eju-transition);
        }

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

        .w87eju-copyright {
            text-align: center;
            padding-top: 32px;
            border-top: 1px solid rgba(0, 0, 0, 0.05);
            color: var(--w87eju-text-muted);
            font-size: 13px;
        }

        /* Responsive */
        @media (max-width: 992px) {
            .w87eju-hero-grid { gap: 48px; }
            .w87eju-nav-menu { display: none; } /* In real implementation, add mobile toggle */
        }

        @media (max-width: 768px) {
            .w87eju-hero { padding: 120px 0 64px; }
            .w87eju-hero-grid { flex-direction: column; text-align: center; }
            .w87eju-btn-group { justify-content: center; }
            .w87eju-matrix-grid { grid-template-columns: 1fr; }
            .w87eju-mobile-wrap { flex-direction: column-reverse; }
            .w87eju-mobile-content { padding: 40px 24px; text-align: center; }
            .w87eju-qr-group { justify-content: center; }
        }