:root {
            --vm2i-primary: #0078d4;
            --vm2i-secondary: #2b343b;
            --vm2i-dark: #0a0c10;
            --vm2i-light: #f4f7f9;
            --vm2i-accent: #00c2ff;
            --vm2i-text: #333333;
            --vm2i-text-muted: #666666;
            --vm2i-white: #ffffff;
            --vm2i-gap: 8px;
            --vm2i-border-radius: 16px;
            --vm2i-shadow: 0 10px 30px rgba(0,0,0,0.08);
            --vm2i-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: "Inter", "PingFang SC", "Microsoft YaHei", sans-serif;
            background-color: var(--vm2i-light);
            color: var(--vm2i-text);
            line-height: 1.6;
            overflow-x: hidden;
            word-break: break-word;
        }

        /* Layout Container */
        .vm2i-container {
            max-width: 1320px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* Typography */
        h1, h2, h3 {
            line-height: 1.2;
            color: var(--vm2i-dark);
            word-break: keep-all;
            white-space: normal;
        }

        h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 800; }
        h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); font-weight: 700; margin-bottom: 24px; }
        p { font-size: clamp(1rem, 1vw + 0.5rem, 1.125rem); line-height: 1.8; margin-bottom: 16px; }

        /* Navigation */
        .vm2i-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: var(--vm2i-transition);
        }

        .vm2i-nav-wrapper {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            height: 80px;
            min-width: 0;
        }

        .vm2i-logo {
            flex: 0 0 auto;
            min-width: 0;
        }

        .vm2i-logo img {
            height: 32px;
            width: auto;
            display: block;
        }

        .vm2i-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 24px;
            min-width: 0;
        }

        .vm2i-menu-item a {
            text-decoration: none;
            color: var(--vm2i-text-muted);
            font-size: 15px;
            font-weight: 500;
            transition: var(--vm2i-transition);
            padding: 8px 0;
            position: relative;
        }

        .vm2i-menu-item a:hover,
        .vm2i-menu-item a.active {
            color: var(--vm2i-primary);
        }

        .vm2i-menu-item a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--vm2i-primary);
        }

        /* Hero Section */
        .vm2i-hero {
            padding: 160px 0 80px;
            background: linear-gradient(135deg, #fff 0%, #eef6ff 100%);
            position: relative;
            overflow: hidden;
        }

        .vm2i-hero::before {
            content: '';
            position: absolute;
            top: -10%;
            right: -5%;
            width: 40%;
            height: 80%;
            background: radial-gradient(circle, rgba(0,120,212,0.05) 0%, transparent 70%);
            z-index: 0;
        }

        .vm2i-hero-grid {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
            min-width: 0;
            position: relative;
            z-index: 1;
        }

        .vm2i-hero-content {
            flex: 1 1 500px;
            min-width: 0;
        }

        .vm2i-hero-visual {
            flex: 1 1 400px;
            min-width: 0;
            background: var(--vm2i-white);
            border-radius: var(--vm2i-border-radius);
            padding: 40px;
            box-shadow: var(--vm2i-shadow);
            border: 1px solid rgba(0,0,0,0.05);
        }

        .vm2i-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(0,120,212,0.1);
            color: var(--vm2i-primary);
            border-radius: 100px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
        }

        /* Export Tool Section */
        .vm2i-section {
            padding: 96px 0;
        }

        .vm2i-card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
            margin-top: 48px;
        }

        .vm2i-card {
            background: var(--vm2i-white);
            border-radius: var(--vm2i-border-radius);
            padding: 40px;
            transition: var(--vm2i-transition);
            border: 1px solid transparent;
            box-shadow: 0 4px 12px rgba(0,0,0,0.03);
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .vm2i-card:hover {
            transform: translateY(-8px);
            border-color: var(--vm2i-primary);
            box-shadow: var(--vm2i-shadow);
        }

        .vm2i-step-num {
            width: 48px;
            height: 48px;
            background: var(--vm2i-primary);
            color: #fff;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 20px;
            margin-bottom: 24px;
        }

        /* Feature Highlight */
        .vm2i-feature-box {
            display: flex;
            flex-wrap: wrap;
            gap: 64px;
            align-items: center;
            background: var(--vm2i-dark);
            color: #fff;
            border-radius: 32px;
            padding: 64px;
            margin-top: 48px;
            min-width: 0;
        }

        .vm2i-feature-text {
            flex: 1 1 400px;
            min-width: 0;
        }

        .vm2i-feature-text h2 {
            color: #fff;
        }

        .vm2i-feature-list {
            list-style: none;
            margin-top: 32px;
        }

        .vm2i-feature-list li {
            margin-bottom: 16px;
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 1.1rem;
        }

        .vm2i-feature-list li::before {
            content: "✓";
            color: var(--vm2i-accent);
            font-weight: bold;
        }

        /* Instructions Wrapper */
        .vm2i-guide-container {
            background: #fff;
            border-radius: 24px;
            padding: 48px;
            box-shadow: var(--vm2i-shadow);
            max-width: 900px;
            margin: 0 auto;
        }

        .vm2i-code-display {
            background: #f8f9fa;
            border-left: 4px solid var(--vm2i-primary);
            padding: 24px;
            font-family: monospace;
            border-radius: 8px;
            margin: 24px 0;
            font-size: 14px;
            color: #333;
        }

        /* CTA Section */
        .vm2i-cta {
            text-align: center;
            padding: 96px 0;
            background: var(--vm2i-primary);
            color: #fff;
            border-radius: 40px;
            margin: 48px 24px;
        }

        .vm2i-cta h2 { color: #fff; }

        .vm2i-btn {
            display: inline-block;
            padding: 18px 48px;
            background: #fff;
            color: var(--vm2i-primary);
            text-decoration: none;
            border-radius: 100px;
            font-weight: 700;
            font-size: 1.125rem;
            transition: var(--vm2i-transition);
            margin-top: 32px;
            border: none;
            cursor: pointer;
        }

        .vm2i-btn:hover {
            transform: scale(1.05);
            box-shadow: 0 10px 20px rgba(0,0,0,0.2);
        }

        /* Footer */
        .vm2i-footer {
            background: #fff;
            padding: 80px 0 40px;
            border-top: 1px solid rgba(0,0,0,0.05);
        }

        .vm2i-footer-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 48px;
            margin-bottom: 64px;
            min-width: 0;
        }

        .vm2i-footer-brand {
            flex: 1 1 300px;
            min-width: 0;
        }

        .vm2i-footer-links {
            flex: 2 1 600px;
            display: flex;
            flex-wrap: wrap;
            justify-content: flex-end;
            gap: 48px;
            min-width: 0;
        }

        .vm2i-footer-group h4 {
            margin-bottom: 24px;
            font-size: 16px;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--vm2i-dark);
        }

        .vm2i-footer-group ul {
            list-style: none;
        }

        .vm2i-footer-group ul li {
            margin-bottom: 12px;
        }

        .vm2i-footer-group ul li a {
            text-decoration: none;
            color: var(--vm2i-text-muted);
            transition: var(--vm2i-transition);
        }

        .vm2i-footer-group ul li a:hover {
            color: var(--vm2i-primary);
        }

        .vm2i-copyright {
            padding-top: 40px;
            border-top: 1px solid rgba(0,0,0,0.05);
            text-align: center;
            color: var(--vm2i-text-muted);
            font-size: 14px;
        }

        /* Responsive */
        @media (max-width: 992px) {
            .vm2i-nav-wrapper { height: auto; padding: 16px 0; }
            .vm2i-menu { order: 3; width: 100%; justify-content: center; margin-top: 16px; gap: 12px; }
            .vm2i-hero { padding-top: 180px; }
            .vm2i-feature-box { padding: 40px; }
        }

        @media (max-width: 768px) {
            .vm2i-hero-grid { flex-direction: column; text-align: center; }
            .vm2i-footer-links { justify-content: flex-start; }
            .vm2i-section { padding: 64px 0; }
            .vm2i-guide-container { padding: 24px; }
        }