:root {
            --m04y-primary: #1F56D2;
            --m04y-primary-light: #E9F0FF;
            --m04y-secondary: #FF6B35;
            --m04y-text-dark: #1D1D1F;
            --m04y-text-gray: #6E6E73;
            --m04y-bg-soft: #F5F7FA;
            --m04y-white: #FFFFFF;
            --m04y-shadow: 0 10px 30px rgba(0,0,0,0.08);
            --m04y-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: "SF Pro SC", "SF Pro Display", "SF Pro Icons", "PingFang SC", "Helvetica Neue", "Helvetica", "Arial", sans-serif;
            background-color: var(--m04y-white);
            color: var(--m04y-text-dark);
            line-height: 1.6;
            overflow-x: hidden;
            word-break: break-word;
        }

        /* 导航栏 */
        .m04y-header {
            position: fixed;
            top: 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);
        }

        .m04y-nav-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 24px;
            height: 64px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .m04y-logo {
            flex-shrink: 0;
        }

        .m04y-logo img {
            height: 32px;
            display: block;
        }

        .m04y-nav-list {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 24px;
            min-width: 0;
        }

        .m04y-nav-item {
            min-width: 0;
        }

        .m04y-nav-link {
            text-decoration: none;
            color: var(--m04y-text-dark);
            font-size: 14px;
            font-weight: 500;
            transition: var(--m04y-transition);
            white-space: nowrap;
        }

        .m04y-nav-link:hover {
            color: var(--m04y-primary);
        }

        .m04y-nav-link.m04y-active {
            color: var(--m04y-primary);
            position: relative;
        }

        .m04y-nav-link.m04y-active::after {
            content: '';
            position: absolute;
            bottom: -22px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--m04y-primary);
        }

        /* Hero 区域 - 独特的工作台布局 */
        .m04y-hero-section {
            padding: 160px 24px 96px;
            background: radial-gradient(circle at 90% 10%, var(--m04y-primary-light) 0%, #fff 40%);
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
        }

        .m04y-hero-content {
            max-width: 900px;
            margin-bottom: 64px;
        }

        .m04y-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem);
            line-height: 1.1;
            font-weight: 700;
            margin-bottom: 24px;
            letter-spacing: -0.02em;
            word-break: keep-all;
        }

        .m04y-hero-subtitle {
            font-size: clamp(1.1rem, 2vw + 0.5rem, 1.5rem);
            color: var(--m04y-text-gray);
            max-width: 700px;
            margin: 0 auto;
        }

        /* 转换卡片组件 */
        .m04y-convert-workspace {
            width: 100%;
            max-width: 1100px;
            background: var(--m04y-white);
            border-radius: 32px;
            box-shadow: 0 40px 100px rgba(0,0,0,0.1);
            padding: 48px;
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            position: relative;
            z-index: 10;
        }

        .m04y-drop-zone {
            flex: 1;
            min-width: 300px;
            border: 2px dashed #D2D2D7;
            border-radius: 24px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 64px 32px;
            transition: var(--m04y-transition);
            background: #FAFAFB;
            cursor: pointer;
        }

        .m04y-drop-zone:hover {
            border-color: var(--m04y-primary);
            background: var(--m04y-primary-light);
        }

        .m04y-icon-placeholder {
            width: 80px;
            height: 80px;
            background: var(--m04y-primary);
            border-radius: 20px;
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 32px;
            font-weight: bold;
        }

        .m04y-drop-text {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .m04y-drop-hint {
            font-size: 14px;
            color: var(--m04y-text-gray);
        }

        .m04y-convert-options {
            flex: 0 0 320px;
            min-width: 0;
            display: flex;
            flex-direction: column;
            justify-content: center;
            text-align: left;
        }

        .m04y-option-item {
            margin-bottom: 24px;
        }

        .m04y-option-label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--m04y-text-gray);
            margin-bottom: 12px;
        }

        .m04y-btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .m04y-btn-main {
            background: var(--m04y-primary);
            color: white;
            padding: 16px 32px;
            border-radius: 12px;
            text-decoration: none;
            font-weight: 600;
            transition: var(--m04y-transition);
            display: inline-block;
            border: none;
            cursor: pointer;
        }

        .m04y-btn-main:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 20px rgba(31, 86, 210, 0.3);
        }

        /* 核心能力矩阵 */
        .m04y-matrix-section {
            padding: 96px 24px;
            background: var(--m04y-bg-soft);
        }

        .m04y-container-1200 {
            max-width: 1200px;
            margin: 0 auto;
        }

        .m04y-section-header {
            text-align: center;
            margin-bottom: 64px;
        }

        .m04y-matrix-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 32px;
        }

        .m04y-matrix-card {
            background: var(--m04y-white);
            padding: 40px;
            border-radius: 24px;
            transition: var(--m04y-transition);
            border: 1px solid rgba(0,0,0,0.03);
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .m04y-matrix-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--m04y-shadow);
        }

        .m04y-card-tag {
            display: inline-block;
            padding: 4px 12px;
            background: var(--m04y-primary-light);
            color: var(--m04y-primary);
            border-radius: 100px;
            font-size: 12px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .m04y-card-title {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .m04y-card-desc {
            color: var(--m04y-text-gray);
            font-size: 15px;
            margin-bottom: 24px;
            flex-grow: 1;
        }

        .m04y-card-features {
            list-style: none;
            padding: 0;
        }

        .m04y-card-features li {
            font-size: 14px;
            color: var(--m04y-text-dark);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
        }

        .m04y-card-features li::before {
            content: '✓';
            color: var(--m04y-primary);
            font-weight: bold;
            margin-right: 8px;
        }

        /* 深度技术特性区 */
        .m04y-tech-feature {
            padding: 120px 24px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 64px;
            max-width: 1400px;
            margin: 0 auto;
        }

        .m04y-tech-image {
            flex: 1;
            min-width: 320px;
            background: linear-gradient(135deg, #1F56D2 0%, #0D1B3E 100%);
            border-radius: 40px;
            aspect-ratio: 4/3;
            position: relative;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .m04y-tech-visual {
            width: 80%;
            height: 60%;
            background: rgba(255,255,255,0.1);
            backdrop-filter: blur(10px);
            border-radius: 16px;
            border: 1px solid rgba(255,255,255,0.2);
            padding: 24px;
        }

        .m04y-tech-text {
            flex: 1;
            min-width: 320px;
        }

        .m04y-tech-label {
            color: var(--m04y-primary);
            text-transform: uppercase;
            letter-spacing: 0.1em;
            font-weight: 800;
            font-size: 14px;
            margin-bottom: 16px;
            display: block;
        }

        .m04y-tech-h2 {
            font-size: clamp(2rem, 3vw, 3rem);
            line-height: 1.2;
            margin-bottom: 24px;
        }

        /* 新闻/动态区块 */
        .m04y-news-section {
            padding: 96px 24px;
            background: #fff;
        }

        .m04y-news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 24px;
        }

        .m04y-news-item {
            padding: 32px;
            border-bottom: 1px solid #eee;
            transition: var(--m04y-transition);
        }

        .m04y-news-item:hover {
            background: var(--m04y-bg-soft);
        }

        /* 底部 CTA */
        .m04y-cta-footer {
            padding: 96px 24px;
            background: var(--m04y-text-dark);
            color: white;
            text-align: center;
            border-radius: 64px 64px 0 0;
            margin-top: 64px;
        }

        .m04y-cta-h2 {
            font-size: clamp(2rem, 4vw, 3.5rem);
            margin-bottom: 32px;
        }

        /* 页脚 */
        .m04y-footer {
            background: var(--m04y-text-dark);
            color: #999;
            padding: 64px 24px 32px;
            font-size: 14px;
        }

        .m04y-footer-grid {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }

        .m04y-footer-brand h3 {
            color: white;
            font-size: 20px;
            margin-bottom: 16px;
        }

        .m04y-footer-links h4 {
            color: white;
            margin-bottom: 20px;
        }

        .m04y-footer-links ul {
            list-style: none;
        }

        .m04y-footer-links li {
            margin-bottom: 12px;
        }

        .m04y-footer-links a {
            color: #999;
            text-decoration: none;
            transition: var(--m04y-transition);
        }

        .m04y-footer-links a:hover {
            color: white;
        }

        .m04y-copyright {
            text-align: center;
            padding-top: 32px;
            color: #666;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .m04y-nav-list {
                display: none; /* 简化移动端，通常应有汉堡菜单 */
            }
            .m04y-convert-workspace {
                padding: 24px;
            }
            .m04y-matrix-grid {
                grid-template-columns: 1fr;
            }
            .m04y-tech-feature {
                flex-direction: column;
            }
            .m04y-hero-section {
                padding-top: 120px;
            }
        }