:root {
            --o6ip-primary: #BF0000;
            --o6ip-primary-hover: #a00000;
            --o6ip-dark: #1a1a1a;
            --o6ip-gray-bg: #f4f4f4;
            --o6ip-text: #333333;
            --o6ip-text-light: #666666;
            --o6ip-white: #ffffff;
            --o6ip-border: #e0e0e0;
            --o6ip-max-width: 1300px;
            --o6ip-gap: 24px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--o6ip-text);
            line-height: 1.7;
            background-color: var(--o6ip-white);
            overflow-x: hidden;
            word-break: keep-all;
        }

        /* 布局基础 */
        .o6ip-container {
            max-width: var(--o6ip-max-width);
            margin: 0 auto;
            padding: 0 40px;
            width: 100%;
        }

        /* 导航栏 */
        .o6ip-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--o6ip-border);
            z-index: 1000;
            display: flex;
            align-items: center;
        }

        .o6ip-header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
            flex-wrap: wrap;
        }

        .o6ip-logo {
            flex-shrink: 0;
            min-width: 0;
        }

        .o6ip-logo img {
            height: 40px;
            display: block;
        }

        .o6ip-nav {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 20px;
            min-width: 0;
        }

        .o6ip-nav a {
            text-decoration: none;
            color: var(--o6ip-text);
            font-weight: 500;
            font-size: 15px;
            transition: color 0.3s;
            padding: 8px 0;
            position: relative;
        }

        .o6ip-nav a:hover {
            color: var(--o6ip-primary);
        }

        .o6ip-nav a.o6ip-active {
            color: var(--o6ip-primary);
        }

        .o6ip-nav a.o6ip-active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--o6ip-primary);
        }

        /* Hero 区 - 非对称网格布局 */
        .o6ip-hero {
            padding-top: 160px;
            padding-bottom: 80px;
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
            position: relative;
            overflow: hidden;
        }

        /* 动态背景线条 */
        .o6ip-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: radial-gradient(var(--o6ip-border) 1px, transparent 1px);
            background-size: 40px 40px;
            opacity: 0.3;
            z-index: 1;
        }

        .o6ip-hero-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 64px;
            align-items: center;
            position: relative;
            z-index: 2;
        }

        .o6ip-hero-content {
            min-width: 0;
            word-break: break-word;
        }

        .o6ip-hero-title {
            font-size: clamp(2.5rem, 5vw, 4rem);
            line-height: 1.1;
            font-weight: 800;
            color: var(--o6ip-dark);
            margin-bottom: 24px;
            white-space: normal;
        }

        .o6ip-hero-subtitle {
            font-size: clamp(1.1rem, 2vw, 1.4rem);
            color: var(--o6ip-text-light);
            margin-bottom: 40px;
            max-width: 600px;
        }

        .o6ip-download-card {
            background: var(--o6ip-white);
            padding: 40px;
            border-radius: 16px;
            box-shadow: 20px 20px 60px rgba(0,0,0,0.05);
            border: 1px solid var(--o6ip-border);
            min-width: 0;
        }

        .o6ip-btn-primary {
            display: inline-block;
            background: var(--o6ip-primary);
            color: var(--o6ip-white);
            padding: 18px 36px;
            border-radius: 8px;
            text-decoration: none;
            font-weight: 600;
            font-size: 18px;
            transition: transform 0.3s, background 0.3s;
            text-align: center;
            width: 100%;
        }

        .o6ip-btn-primary:hover {
            background: var(--o6ip-primary-hover);
            transform: translateY(-3px);
        }

        /* 效率特性区块 */
        .o6ip-section {
            padding: 96px 0;
        }

        .o6ip-section-title {
            font-size: clamp(2rem, 4vw, 2.5rem);
            text-align: center;
            margin-bottom: 64px;
            font-weight: 700;
        }

        .o6ip-efficiency-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
        }

        .o6ip-feature-card {
            background: var(--o6ip-white);
            border: 1px solid var(--o6ip-border);
            padding: 40px;
            border-radius: 12px;
            transition: all 0.3s;
            min-width: 0;
        }

        .o6ip-feature-card:hover {
            border-color: var(--o6ip-primary);
            box-shadow: 0 10px 30px rgba(191, 0, 0, 0.05);
        }

        .o6ip-feature-tag {
            display: inline-block;
            color: var(--o6ip-primary);
            font-weight: 700;
            font-size: 14px;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 16px;
        }

        .o6ip-feature-name {
            font-size: 24px;
            margin-bottom: 16px;
            color: var(--o6ip-dark);
        }

        .o6ip-feature-impact {
            margin-top: 20px;
            padding-top: 20px;
            border-top: 1px dashed var(--o6ip-border);
            font-weight: 600;
            color: var(--o6ip-primary);
        }

        /* 企业场景区块 - 工业美学 */
        .o6ip-scenario-section {
            background: var(--o6ip-dark);
            color: var(--o6ip-white);
            padding: 96px 0;
        }

        .o6ip-scenario-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
        }

        .o6ip-scenario-item {
            flex: 1;
            min-width: 300px;
            border-left: 2px solid var(--o6ip-primary);
            padding-left: 24px;
        }

        .o6ip-scenario-title {
            font-size: 22px;
            margin-bottom: 16px;
            color: var(--o6ip-white);
        }

        .o6ip-scenario-desc {
            color: #aaa;
            font-size: 16px;
        }

        /* 页脚 */
        .o6ip-footer {
            background: #fff;
            padding: 64px 0 32px;
            border-top: 1px solid var(--o6ip-border);
        }

        .o6ip-footer-content {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 40px;
            margin-bottom: 48px;
        }

        .o6ip-footer-brand {
            font-size: 24px;
            font-weight: 800;
            color: var(--o6ip-primary);
            flex: 1;
            min-width: 200px;
        }

        .o6ip-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            flex: 2;
            min-width: 300px;
        }

        .o6ip-footer-group h4 {
            margin-bottom: 20px;
            font-size: 16px;
            color: var(--o6ip-dark);
        }

        .o6ip-footer-group ul {
            list-style: none;
        }

        .o6ip-footer-group li {
            margin-bottom: 10px;
        }

        .o6ip-footer-group a {
            text-decoration: none;
            color: var(--o6ip-text-light);
            font-size: 14px;
            transition: color 0.3s;
        }

        .o6ip-footer-group a:hover {
            color: var(--o6ip-primary);
        }

        .o6ip-copyright {
            text-align: center;
            padding-top: 32px;
            border-top: 1px solid var(--o6ip-border);
            color: #999;
            font-size: 13px;
        }

        /* 响应式适配 */
        @media (max-width: 1024px) {
            .o6ip-hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .o6ip-hero-content {
                text-align: center;
            }
            .o6ip-hero-subtitle {
                margin-left: auto;
                margin-right: auto;
            }
        }

        @media (max-width: 768px) {
            .o6ip-container {
                padding: 0 24px;
            }
            .o6ip-header {
                height: auto;
                padding: 15px 0;
            }
            .o6ip-nav {
                justify-content: center;
                gap: 12px;
                margin-top: 15px;
            }
            .o6ip-hero {
                padding-top: 180px;
            }
            .o6ip-efficiency-grid {
                grid-template-columns: 1fr;
            }
            .o6ip-scenario-item {
                flex: none;
                width: 100%;
            }
        }