:root {
            --w87eju-primary: #ff4e22;
            --w87eju-primary-light: #ff7654;
            --w87eju-dark: #1d1d1f;
            --w87eju-gray: #f5f5f7;
            --w87eju-text: #333333;
            --w87eju-text-secondary: #86868b;
            --w87eju-white: #ffffff;
            --w87eju-accent: #0071e3;
            --w87eju-container-width: 1300px;
        }

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, sans-serif;
            color: var(--w87eju-text);
            line-height: 1.6;
            background-color: var(--w87eju-white);
            overflow-x: hidden;
        }

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

        .w87eju-flex {
            display: flex;
            flex-wrap: wrap;
        }

        .w87eju-flex-item {
            min-width: 0;
        }

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

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

        /* Navigation */
        .w87eju-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            transition: all 0.3s ease;
        }

        .w87eju-nav {
            height: 64px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }

        .w87eju-logo {
            display: flex;
            align-items: center;
            height: 100%;
        }

        .w87eju-logo img {
            height: 32px;
            width: auto;
        }

        .w87eju-menu {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }

        .w87eju-menu li a {
            text-decoration: none;
            color: var(--w87eju-dark);
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 500;
            transition: color 0.3s;
        }

        .w87eju-menu li a:hover {
            color: var(--w87eju-primary);
        }

        .w87eju-menu li a.active {
            color: var(--w87eju-primary);
            position: relative;
        }

        .w87eju-menu li a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 16px;
            right: 16px;
            height: 2px;
            background: var(--w87eju-primary);
        }

        /* Hero Section */
        .w87eju-hero {
            padding: 160px 0 96px;
            background: radial-gradient(circle at top right, rgba(255, 78, 34, 0.05), transparent),
                        radial-gradient(circle at bottom left, rgba(0, 113, 227, 0.05), transparent);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .w87eju-hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(255, 78, 34, 0.1);
            color: var(--w87eju-primary);
            border-radius: 20px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
        }

        .w87eju-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem);
            font-weight: 800;
            color: var(--w87eju-dark);
            margin-bottom: 24px;
            letter-spacing: -1px;
        }

        .w87eju-hero-subtitle {
            font-size: clamp(1.1rem, 2vw + 0.5rem, 1.4rem);
            color: var(--w87eju-text-secondary);
            max-width: 800px;
            margin: 0 auto 48px;
        }

        .w87eju-btn-group {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .w87eju-btn {
            padding: 16px 40px;
            border-radius: 30px;
            font-size: 18px;
            font-weight: 600;
            text-decoration: none;
            transition: transform 0.3s, box-shadow 0.3s;
            cursor: pointer;
            border: none;
        }

        .w87eju-btn-primary {
            background: var(--w87eju-primary);
            color: var(--w87eju-white);
            box-shadow: 0 10px 20px rgba(255, 78, 34, 0.2);
        }

        .w87eju-btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 30px rgba(255, 78, 34, 0.3);
        }

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

        .w87eju-section-header {
            text-align: center;
            margin-bottom: 64px;
        }

        .w87eju-section-title {
            font-size: clamp(2rem, 3vw + 0.5rem, 2.8rem);
            margin-bottom: 16px;
        }

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

        .w87eju-matrix-card {
            background: var(--w87eju-white);
            padding: 48px;
            border-radius: 24px;
            border: 1px solid rgba(0,0,0,0.05);
            transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

        .w87eju-matrix-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 30px 60px rgba(0,0,0,0.1);
            border-color: var(--w87eju-primary-light);
        }

        .w87eju-matrix-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 0;
            background: var(--w87eju-primary);
            transition: height 0.4s ease;
        }

        .w87eju-matrix-card:hover::before {
            height: 100%;
        }

        .w87eju-card-icon {
            font-size: 40px;
            margin-bottom: 24px;
            width: 80px;
            height: 80px;
            background: var(--w87eju-gray);
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--w87eju-primary);
        }

        .w87eju-card-name {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .w87eju-capacity-list {
            list-style: none;
            margin-bottom: 24px;
        }

        .w87eju-capacity-list li {
            padding: 8px 0;
            color: var(--w87eju-text-secondary);
            display: flex;
            align-items: center;
        }

        .w87eju-capacity-list li::before {
            content: '✓';
            margin-right: 12px;
            color: var(--w87eju-primary);
            font-weight: bold;
        }

        .w87eju-usecase {
            margin-top: auto;
            padding-top: 24px;
            border-top: 1px dashed rgba(0,0,0,0.1);
            font-size: 14px;
            color: var(--w87eju-primary);
            font-weight: 500;
        }

        /* Feature Highlight (Alternating Layout) */
        .w87eju-feature-row {
            display: flex;
            align-items: center;
            gap: 64px;
            margin-bottom: 120px;
        }

        .w87eju-feature-row:nth-child(even) {
            flex-direction: row-reverse;
        }

        .w87eju-feature-content {
            flex: 1;
            min-width: 300px;
        }

        .w87eju-feature-visual {
            flex: 1.2;
            min-width: 300px;
            background: var(--w87eju-gray);
            height: 400px;
            border-radius: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            box-shadow: inset 0 0 40px rgba(0,0,0,0.02);
        }

        .w87eju-visual-placeholder {
            width: 80%;
            height: 60%;
            background: var(--w87eju-white);
            border-radius: 16px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.05);
            display: flex;
            flex-direction: column;
            padding: 24px;
        }

        /* News Section */
        .w87eju-news-section {
            background: var(--w87eju-gray);
            border-radius: 40px;
            margin: 48px 24px;
            padding: 80px 48px;
        }

        /* Footer */
        .w87eju-footer {
            padding: 80px 0 40px;
            background: var(--w87eju-dark);
            color: var(--w87eju-white);
        }

        .w87eju-footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 48px;
            margin-bottom: 64px;
        }

        .w87eju-footer-brand h2 {
            font-size: 24px;
            margin-bottom: 16px;
            color: var(--w87eju-white);
        }

        .w87eju-footer-links h4 {
            font-size: 16px;
            margin-bottom: 24px;
            color: var(--w87eju-primary-light);
        }

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

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

        .w87eju-footer-links a {
            color: #b2b2b2;
            text-decoration: none;
            transition: color 0.3s;
            font-size: 14px;
        }

        .w87eju-footer-links a:hover {
            color: var(--w87eju-white);
        }

        .w87eju-footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 40px;
            text-align: center;
            font-size: 13px;
            color: #86868b;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .w87eju-menu {
                display: none; /* In a real site, implement a mobile burger menu */
            }
            .w87eju-hero {
                padding: 120px 0 64px;
            }
            .w87eju-feature-row {
                flex-direction: column !important;
                gap: 32px;
            }
            .w87eju-matrix-grid {
                grid-template-columns: 1fr;
            }
            .w87eju-news-section {
                padding: 40px 24px;
                margin: 24px 12px;
            }
        }