:root {
            --eu06b-primary: #0066FF;
            --eu06b-secondary: #00d4ff;
            --eu06b-dark: #0a192f;
            --eu06b-text: #333333;
            --eu06b-light: #f4f7fa;
            --eu06b-white: #ffffff;
            --eu06b-gradient: linear-gradient(135deg, #0066FF 0%, #00d4ff 100%);
            --eu06b-spacing-unit: 8px;
            --eu06b-container-width: 1100px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            line-height: 1.6;
            color: var(--eu06b-text);
            background-color: var(--eu06b-white);
            overflow-x: hidden;
            word-break: keep-all;
        }

        /* 导航系统 */
        .eu06b-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
        }

        .eu06b-nav-container {
            max-width: var(--eu06b-container-width);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 80px;
            flex-wrap: wrap;
        }

        .eu06b-logo {
            flex: 0 0 auto;
            display: flex;
            align-items: center;
            min-width: 0;
        }

        .eu06b-logo img {
            height: 40px;
            width: auto;
        }

        .eu06b-nav-menu {
            display: flex;
            list-style: none;
            gap: 20px;
            flex-wrap: wrap;
            min-width: 0;
        }

        .eu06b-nav-menu li a {
            text-decoration: none;
            color: var(--eu06b-dark);
            font-weight: 500;
            font-size: 15px;
            transition: color 0.3s ease;
            padding: 8px 12px;
            border-radius: 6px;
        }

        .eu06b-nav-menu li a:hover {
            color: var(--eu06b-primary);
            background: rgba(0, 102, 255, 0.05);
        }

        .eu06b-nav-menu li a.active {
            color: var(--eu06b-primary);
            position: relative;
        }

        .eu06b-nav-menu li a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 12px;
            right: 12px;
            height: 2px;
            background: var(--eu06b-primary);
        }

        /* Hero 区块 */
        .eu06b-hero {
            padding-top: 160px;
            padding-bottom: 96px;
            background: radial-gradient(circle at 90% 10%, rgba(0, 104, 255, 0.05) 0%, transparent 40%),
                        radial-gradient(circle at 10% 90%, rgba(0, 212, 255, 0.05) 0%, transparent 40%);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .eu06b-hero-inner {
            max-width: 900px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .eu06b-hero h1 {
            font-size: clamp(2.5rem, 5vw + 1rem, 4rem);
            line-height: 1.1;
            margin-bottom: 24px;
            background: linear-gradient(to right, var(--eu06b-dark), var(--eu06b-primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            word-break: break-word;
        }

        .eu06b-hero p {
            font-size: clamp(1.1rem, 1vw + 0.8rem, 1.4rem);
            color: #666;
            margin-bottom: 40px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        /* 核心教程步骤 */
        .eu06b-section {
            padding: 96px 0;
            max-width: var(--eu06b-container-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .eu06b-tutorial-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 48px;
            margin-top: 64px;
        }

        .eu06b-step-card {
            background: var(--eu06b-white);
            border: 1px solid rgba(0,0,0,0.06);
            border-radius: 24px;
            padding: 40px;
            transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
            position: relative;
            min-width: 0;
        }

        .eu06b-step-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.08);
            border-color: var(--eu06b-primary);
        }

        .eu06b-step-num {
            font-size: 48px;
            font-weight: 900;
            color: rgba(0, 102, 255, 0.1);
            position: absolute;
            top: 20px;
            right: 30px;
        }

        .eu06b-step-icon {
            width: 64px;
            height: 64px;
            background: var(--eu06b-light);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 24px;
        }

        .eu06b-step-icon svg {
            width: 32px;
            height: 32px;
            fill: var(--eu06b-primary);
        }

        .eu06b-step-card h3 {
            font-size: 24px;
            margin-bottom: 16px;
            color: var(--eu06b-dark);
        }

        .eu06b-step-card p {
            color: #666;
            line-height: 1.8;
        }

        /* 协议执行矩阵 */
        .eu06b-matrix-section {
            background-color: var(--eu06b-dark);
            color: var(--eu06b-white);
            padding: 96px 0;
            border-radius: 40px;
            margin: 48px 24px;
        }

        .eu06b-matrix-container {
            max-width: var(--eu06b-container-width);
            margin: 0 auto;
            padding: 0 40px;
        }

        .eu06b-matrix-header {
            text-align: center;
            margin-bottom: 64px;
        }

        .eu06b-matrix-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
        }

        .eu06b-matrix-item {
            flex: 1 1 300px;
            background: rgba(255, 255, 255, 0.05);
            padding: 32px;
            border-radius: 20px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            min-width: 0;
        }

        .eu06b-matrix-item h4 {
            color: var(--eu06b-secondary);
            margin-bottom: 12px;
            font-size: 18px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .eu06b-matrix-capability {
            font-weight: bold;
            display: block;
            margin-bottom: 8px;
            font-size: 20px;
        }

        /* 用户画像区块 */
        .eu06b-persona-section {
            padding: 96px 24px;
        }

        .eu06b-persona-card {
            display: flex;
            flex-wrap: wrap;
            background: var(--eu06b-light);
            border-radius: 32px;
            overflow: hidden;
            margin-bottom: 40px;
            align-items: center;
            min-width: 0;
        }

        .eu06b-persona-content {
            flex: 1 1 400px;
            padding: 64px;
            min-width: 0;
        }

        .eu06b-persona-meta {
            display: inline-block;
            padding: 6px 16px;
            background: var(--eu06b-primary);
            color: white;
            border-radius: 20px;
            font-size: 14px;
            margin-bottom: 24px;
        }

        .eu06b-persona-feature {
            margin-top: 24px;
            padding-top: 24px;
            border-top: 1px solid rgba(0,0,0,0.1);
            color: var(--eu06b-primary);
            font-weight: 600;
        }

        /* 页脚 */
        .eu06b-footer {
            background: var(--eu06b-light);
            padding: 80px 24px 40px;
            margin-top: 96px;
        }

        .eu06b-footer-grid {
            max-width: var(--eu06b-container-width);
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 48px;
            border-bottom: 1px solid rgba(0,0,0,0.05);
            padding-bottom: 48px;
        }

        .eu06b-footer-brand h2 {
            font-size: 24px;
            margin-bottom: 16px;
            color: var(--eu06b-dark);
        }

        .eu06b-footer-links h5 {
            margin-bottom: 24px;
            font-size: 18px;
            color: var(--eu06b-dark);
        }

        .eu06b-footer-links ul {
            list-style: none;
        }

        .eu06b-footer-links ul li {
            margin-bottom: 12px;
        }

        .eu06b-footer-links ul li a {
            text-decoration: none;
            color: #666;
            transition: color 0.3s;
        }

        .eu06b-footer-links ul li a:hover {
            color: var(--eu06b-primary);
        }

        .eu06b-copyright {
            text-align: center;
            padding-top: 40px;
            color: #999;
            font-size: 14px;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .eu06b-nav-container {
                height: auto;
                padding: 16px;
            }
            .eu06b-nav-menu {
                display: none; /* 简化演示：移动端隐藏菜单或转为汉堡菜单 */
            }
            .eu06b-hero {
                padding-top: 120px;
            }
            .eu06b-persona-content {
                padding: 32px;
            }
            .eu06b-matrix-section {
                margin: 24px 12px;
            }
        }

        .eu06b-btn {
            display: inline-block;
            padding: 16px 32px;
            background: var(--eu06b-gradient);
            color: white;
            text-decoration: none;
            border-radius: 50px;
            font-weight: 600;
            transition: transform 0.3s, box-shadow 0.3s;
            border: none;
            cursor: pointer;
        }

        .eu06b-btn:hover {
            transform: scale(1.05);
            box-shadow: 0 10px 25px rgba(0, 102, 255, 0.3);
        }