:root {
            --vm2i-primary: #00e5ff;
            --vm2i-primary-dark: #00a8cc;
            --vm2i-bg-dark: #0a0e14;
            --vm2i-bg-card: #161b22;
            --vm2i-text-main: #e6edf3;
            --vm2i-text-muted: #8b949e;
            --vm2i-accent: #58a6ff;
            --vm2i-border: rgba(255, 255, 255, 0.1);
            --vm2i-container-width: 1360px;
        }

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

        body {
            background-color: var(--vm2i-bg-dark);
            color: var(--vm2i-text-main);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
            line-height: 1.6;
            overflow-x: hidden;
            word-break: keep-all;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: all 0.3s ease;
        }

        /* --- 导航栏 --- */
        .vm2i-navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(10, 14, 20, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--vm2i-border);
        }

        .vm2i-nav-container {
            max-width: var(--vm2i-container-width);
            margin: 0 auto;
            padding: 0 32px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 80px;
            flex-wrap: wrap;
        }

        .vm2i-logo {
            flex-shrink: 0;
            display: flex;
            align-items: center;
            min-width: 0;
        }

        .vm2i-logo img {
            height: 40px;
            width: auto;
        }

        .vm2i-nav-menu {
            display: flex;
            list-style: none;
            gap: 16px;
            flex-wrap: wrap;
            min-width: 0;
        }

        .vm2i-nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--vm2i-text-muted);
            padding: 8px 12px;
            border-radius: 6px;
            white-space: nowrap;
        }

        .vm2i-nav-link:hover {
            color: var(--vm2i-primary);
            background: rgba(0, 229, 255, 0.1);
        }

        .vm2i-nav-link.vm2i-active {
            color: var(--vm2i-primary);
            background: rgba(0, 229, 255, 0.15);
            box-shadow: inset 0 0 0 1px var(--vm2i-primary);
        }

        /* --- Hero 下载区 --- */
        .vm2i-hero {
            padding-top: 160px;
            padding-bottom: 96px;
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
        }

        .vm2i-hero::before {
            content: "";
            position: absolute;
            top: -10%;
            left: 50%;
            width: 80%;
            height: 60%;
            background: radial-gradient(circle, rgba(0, 229, 255, 0.08) 0%, transparent 70%);
            transform: translateX(-50%);
            z-index: -1;
        }

        .vm2i-hero-content {
            max-width: 900px;
            padding: 0 24px;
            word-break: break-word;
        }

        .vm2i-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4rem);
            font-weight: 800;
            line-height: 1.1;
            margin-bottom: 24px;
            background: linear-gradient(135deg, #fff 0%, var(--vm2i-primary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .vm2i-hero-subtitle {
            font-size: clamp(1.1rem, 1vw + 0.8rem, 1.4rem);
            color: var(--vm2i-text-muted);
            margin-bottom: 48px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        .vm2i-download-box-wrapper {
            position: relative;
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            min-width: 0;
        }

        .vm2i-main-card {
            background: var(--vm2i-bg-card);
            border: 1px solid var(--vm2i-border);
            border-radius: 24px;
            overflow: hidden;
            display: flex;
            flex-wrap: wrap;
            min-width: 0;
            box-shadow: 0 40px 80px rgba(0, 0, 0, 0.5);
            transition: transform 0.4s ease;
        }

        .vm2i-card-img {
            flex: 1;
            min-width: 320px;
            max-height: 500px;
            object-fit: cover;
        }

        .vm2i-card-info {
            flex: 1;
            min-width: 320px;
            padding: 64px;
            text-align: left;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .vm2i-card-info h2 {
            font-size: 2rem;
            margin-bottom: 16px;
            color: #fff;
        }

        .vm2i-card-info p {
            color: var(--vm2i-text-muted);
            margin-bottom: 32px;
            font-size: 1.1rem;
        }

        .vm2i-btn-group {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            min-width: 0;
        }

        .vm2i-btn {
            padding: 16px 40px;
            border-radius: 12px;
            font-weight: 600;
            font-size: 1.1rem;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }

        .vm2i-btn-primary {
            background: var(--vm2i-primary);
            color: #000;
        }

        .vm2i-btn-primary:hover {
            transform: translateY(-4px);
            background: #fff;
            box-shadow: 0 10px 20px rgba(0, 229, 255, 0.3);
        }

        .vm2i-btn-outline {
            border: 1px solid var(--vm2i-border);
            color: #fff;
        }

        .vm2i-btn-outline:hover {
            background: rgba(255, 255, 255, 0.05);
            border-color: #fff;
            transform: translateY(-4px);
        }

        /* --- 动态内容区块 --- */
        .vm2i-section {
            padding: 96px 32px;
            max-width: var(--vm2i-container-width);
            margin: 0 auto;
        }

        .vm2i-section-header {
            text-align: center;
            margin-bottom: 64px;
        }

        .vm2i-section-title {
            font-size: 2.5rem;
            margin-bottom: 16px;
        }

        .vm2i-compare-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 48px;
            align-items: center;
        }

        .vm2i-compare-content {
            min-width: 0;
        }

        .vm2i-compare-img-wrapper {
            position: relative;
            border-radius: 20px;
            overflow: hidden;
            border: 1px solid var(--vm2i-border);
            box-shadow: 0 20px 40px rgba(0,0,0,0.3);
        }

        .vm2i-compare-img-wrapper img {
            width: 100%;
            display: block;
        }

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

        .vm2i-feature-item {
            display: flex;
            align-items: center;
            margin-bottom: 20px;
            font-size: 1.1rem;
            color: var(--vm2i-text-muted);
        }

        .vm2i-feature-item::before {
            content: "✓";
            color: var(--vm2i-primary);
            margin-right: 16px;
            font-weight: bold;
            font-size: 1.2rem;
        }

        /* --- 底部品牌 --- */
        .vm2i-footer {
            background: #05070a;
            padding: 80px 32px;
            border-top: 1px solid var(--vm2i-border);
            margin-top: 64px;
        }

        .vm2i-footer-container {
            max-width: var(--vm2i-container-width);
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            flex-wrap: wrap;
            gap: 48px;
        }

        .vm2i-footer-brand-info {
            flex: 1;
            min-width: 280px;
        }

        .vm2i-brand-name {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--vm2i-primary);
            margin-bottom: 16px;
        }

        .vm2i-footer-text {
            color: var(--vm2i-text-muted);
            max-width: 400px;
            font-size: 0.95rem;
        }

        .vm2i-footer-links {
            display: flex;
            gap: 64px;
            flex-wrap: wrap;
            min-width: 0;
        }

        .vm2i-footer-column h4 {
            color: #fff;
            margin-bottom: 24px;
            font-size: 1.1rem;
        }

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

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

        .vm2i-footer-column a {
            color: var(--vm2i-text-muted);
            font-size: 0.95rem;
        }

        .vm2i-footer-column a:hover {
            color: var(--vm2i-primary);
        }

        .vm2i-copyright {
            width: 100%;
            text-align: center;
            padding-top: 48px;
            margin-top: 48px;
            border-top: 1px solid var(--vm2i-border);
            color: var(--vm2i-text-muted);
            font-size: 0.85rem;
        }

        /* 响应式调整 */
        @media (max-width: 992px) {
            .vm2i-card-info {
                padding: 40px;
            }
        }

        @media (max-width: 768px) {
            .vm2i-nav-container {
                height: auto;
                padding: 16px;
            }
            .vm2i-nav-menu {
                justify-content: center;
                margin-top: 16px;
            }
            .vm2i-hero {
                padding-top: 120px;
            }
            .vm2i-card-img {
                height: 300px;
            }
            .vm2i-compare-grid {
                grid-template-columns: 1fr;
            }
        }