:root {
            --zmq67-primary: #D4231E;
            --zmq67-primary-hover: #B71C1C;
            --zmq67-dark: #1A1A1A;
            --zmq67-text: #333333;
            --zmq67-light-gray: #F5F7FA;
            --zmq67-white: #FFFFFF;
            --zmq67-glass: rgba(255, 255, 255, 0.85);
            --zmq67-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
            --zmq67-radius: 16px;
            --zmq67-max-width: 1400px;
        }

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
            color: var(--zmq67-text);
            line-height: 1.6;
            background-color: var(--zmq67-white);
            word-break: break-word;
            overflow-wrap: break-word;
        }

        /* Navigation */
        .zmq67-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: var(--zmq67-glass);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
        }

        .zmq67-nav-container {
            max-width: var(--zmq67-max-width);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 72px;
            flex-wrap: wrap;
        }

        .zmq67-logo {
            flex-shrink: 0;
            height: 32px;
            display: flex;
            align-items: center;
        }

        .zmq67-logo img {
            height: 100%;
            width: auto;
        }

        .zmq67-nav-menu {
            display: flex;
            list-style: none;
            gap: 8px;
            flex-wrap: wrap;
            min-width: 0;
        }

        .zmq67-nav-item a {
            text-decoration: none;
            color: var(--zmq67-text);
            padding: 8px 16px;
            font-size: 0.95rem;
            font-weight: 500;
            border-radius: 8px;
            transition: all 0.2s ease;
            white-space: nowrap;
        }

        .zmq67-nav-item a:hover {
            color: var(--zmq67-primary);
            background: rgba(212, 35, 30, 0.05);
        }

        .zmq67-nav-item.zmq67-active a {
            color: var(--zmq67-primary);
            background: rgba(212, 35, 30, 0.08);
        }

        /* Hero Section */
        .zmq67-hero {
            padding-top: 120px;
            padding-bottom: 96px;
            background: var(--zmq67-light-gray);
            position: relative;
            overflow: hidden;
        }

        .zmq67-hero-inner {
            max-width: var(--zmq67-max-width);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 48px;
        }

        .zmq67-hero-text {
            flex: 1;
            min-width: 320px;
        }

        .zmq67-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem);
            font-weight: 800;
            line-height: 1.1;
            color: var(--zmq67-dark);
            margin-bottom: 24px;
            word-break: keep-all;
        }

        .zmq67-hero-subtitle {
            font-size: clamp(1.1rem, 2vw + 0.2rem, 1.4rem);
            color: #666;
            margin-bottom: 40px;
            max-width: 600px;
        }

        .zmq67-hero-visual {
            flex: 1.2;
            min-width: 320px;
            position: relative;
        }

        .zmq67-hero-img {
            width: 100%;
            height: auto;
            border-radius: 24px;
            box-shadow: 0 20px 60px rgba(0,0,0,0.1);
            transform: perspective(1000px) rotateY(-5deg);
            transition: transform 0.5s ease;
        }

        .zmq67-hero-img:hover {
            transform: perspective(1000px) rotateY(0deg);
        }

        .zmq67-btn-primary {
            display: inline-block;
            background: var(--zmq67-primary);
            color: white;
            padding: 16px 48px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            transition: transform 0.3s ease, background 0.3s ease;
            box-shadow: 0 10px 20px rgba(212, 35, 30, 0.2);
        }

        .zmq67-btn-primary:hover {
            background: var(--zmq67-primary-hover);
            transform: translateY(-2px);
        }

        /* AI Feature Section */
        .zmq67-ai-section {
            padding: 96px 0;
            background: white;
        }

        .zmq67-ai-grid {
            max-width: var(--zmq67-max-width);
            margin: 0 auto;
            padding: 0 24px;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
            gap: 64px;
            align-items: center;
        }

        .zmq67-ai-content h2 {
            font-size: 2.5rem;
            margin-bottom: 24px;
            color: var(--zmq67-dark);
        }

        .zmq67-ai-content p {
            font-size: 1.2rem;
            line-height: 1.8;
            color: #555;
            margin-bottom: 32px;
        }

        .zmq67-ai-image-wrap {
            position: relative;
            min-width: 0;
        }

        .zmq67-ai-image-wrap img {
            width: 100%;
            border-radius: var(--zmq67-radius);
            box-shadow: var(--zmq67-shadow);
        }

        /* Product Matrix Grid */
        .zmq67-matrix-section {
            padding: 96px 0;
            background: var(--zmq67-light-gray);
        }

        .zmq67-matrix-header {
            text-align: center;
            margin-bottom: 64px;
            padding: 0 24px;
        }

        .zmq67-matrix-grid {
            max-width: var(--zmq67-max-width);
            margin: 0 auto;
            padding: 0 24px;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
        }

        .zmq67-matrix-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;
        }

        .zmq67-matrix-card:hover {
            transform: translateY(-12px);
            box-shadow: 0 30px 60px rgba(0,0,0,0.06);
        }

        .zmq67-matrix-card h3 {
            font-size: 1.6rem;
            margin-bottom: 20px;
            color: var(--zmq67-primary);
        }

        .zmq67-matrix-list {
            list-style: none;
            margin-bottom: 24px;
            flex-grow: 1;
        }

        .zmq67-matrix-list li {
            padding: 8px 0;
            border-bottom: 1px solid #f0f0f0;
            font-size: 0.95rem;
            color: #666;
        }

        .zmq67-tech-tag {
            font-size: 0.8rem;
            background: #FFF0F0;
            color: var(--zmq67-primary);
            padding: 4px 12px;
            border-radius: 4px;
            display: inline-block;
            margin-top: 16px;
            font-weight: 600;
        }

        /* Collaboration Section */
        .zmq67-collab-section {
            padding: 96px 0;
            background: white;
        }

        .zmq67-split-layout {
            max-width: var(--zmq67-max-width);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 64px;
            align-items: center;
        }

        .zmq67-split-content {
            flex: 1;
            min-width: 320px;
        }

        .zmq67-split-image {
            flex: 1.2;
            min-width: 320px;
        }

        .zmq67-split-image img {
            width: 100%;
            border-radius: var(--zmq67-radius);
        }

        /* Mobile Sync Section */
        .zmq67-sync-section {
            padding: 96px 0;
            background: #1A1A1A;
            color: white;
        }

        .zmq67-sync-container {
            max-width: var(--zmq67-max-width);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            flex-wrap: wrap-reverse;
            gap: 64px;
            align-items: center;
        }

        .zmq67-sync-content h2 {
            font-size: 2.5rem;
            margin-bottom: 24px;
        }

        /* Footer */
        .zmq67-footer {
            background: #F8F9FA;
            padding: 80px 0 40px;
            border-top: 1px solid #eee;
        }

        .zmq67-footer-inner {
            max-width: var(--zmq67-max-width);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 48px;
        }

        .zmq67-footer-brand h4 {
            font-size: 1.5rem;
            margin-bottom: 16px;
            color: var(--zmq67-primary);
        }

        .zmq67-footer-links {
            display: flex;
            gap: 64px;
            flex-wrap: wrap;
        }

        .zmq67-footer-group h5 {
            margin-bottom: 20px;
            font-size: 1rem;
            color: var(--zmq67-dark);
        }

        .zmq67-footer-group ul {
            list-style: none;
        }

        .zmq67-footer-group li {
            margin-bottom: 12px;
        }

        .zmq67-footer-group a {
            text-decoration: none;
            color: #777;
            font-size: 0.9rem;
            transition: color 0.2s;
        }

        .zmq67-footer-group a:hover {
            color: var(--zmq67-primary);
        }

        .zmq67-copyright {
            max-width: var(--zmq67-max-width);
            margin: 64px auto 0;
            padding: 24px 24px 0;
            border-top: 1px solid #eee;
            text-align: center;
            color: #999;
            font-size: 0.85rem;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .zmq67-nav-menu {
                display: none; /* In a real project, we'd add a hamburger menu */
            }
            .zmq67-hero-inner, .zmq67-ai-grid, .zmq67-split-layout, .zmq67-sync-container {
                flex-direction: column;
                text-align: center;
            }
            .zmq67-hero-title {
                font-size: 2.5rem;
            }
            .zmq67-matrix-grid {
                grid-template-columns: 1fr;
            }
        }