:root {
            --o6ip-primary: #BF0000;
            --o6ip-primary-dark: #8B0000;
            --o6ip-bg: #FFFFFF;
            --o6ip-text: #2C3E50;
            --o6ip-text-light: #5D6D7E;
            --o6ip-accent: #F4F7F9;
            --o6ip-border: #E1E8ED;
            --o6ip-shadow: 0 10px 30px rgba(0,0,0,0.08);
            --o6ip-industrial-grey: #34495E;
        }

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

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
            background-color: var(--o6ip-bg);
            color: var(--o6ip-text);
            line-height: 1.6;
            overflow-x: hidden;
            word-break: break-word;
        }

        /* 动态数据流背景 */
        .o6ip-data-stream-bg {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;
            background: linear-gradient(90deg, var(--o6ip-accent) 1px, transparent 1px) 0 0 / 50px 50px,
                        linear-gradient(var(--o6ip-accent) 1px, transparent 1px) 0 0 / 50px 50px;
            opacity: 0.5;
        }

        .o6ip-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 4%;
        }

        /* 导航栏 */
        .o6ip-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(15px);
            z-index: 1000;
            border-bottom: 1px solid var(--o6ip-border);
        }

        .o6ip-nav-wrapper {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            height: 80px;
            min-width: 0;
        }

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

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

        .o6ip-nav-links {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 24px;
            min-width: 0;
        }

        .o6ip-nav-links li {
            min-width: 0;
        }

        .o6ip-nav-links a {
            text-decoration: none;
            color: var(--o6ip-text);
            font-weight: 500;
            font-size: 0.95rem;
            transition: color 0.3s;
            padding: 8px 0;
            position: relative;
        }

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

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

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

        /* Hero 区域 */
        .o6ip-hero {
            padding: 160px 0 80px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
            min-width: 0;
        }

        .o6ip-hero-content {
            flex: 1 1 500px;
            min-width: 0;
        }

        .o6ip-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem);
            line-height: 1.1;
            font-weight: 800;
            color: var(--o6ip-industrial-grey);
            margin-bottom: 24px;
            white-space: normal;
        }

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

        .o6ip-hero-visual {
            flex: 1 1 400px;
            min-width: 0;
            position: relative;
            background: var(--o6ip-accent);
            border-radius: 24px;
            height: 450px;
            display: flex;
            justify-content: center;
            align-items: center;
            overflow: hidden;
            border: 1px solid var(--o6ip-border);
        }

        /* 装饰性的加速视觉效果 */
        .o6ip-speed-lines {
            width: 80%;
            height: 200px;
            background: repeating-linear-gradient(90deg, var(--o6ip-primary) 0, var(--o6ip-primary) 2px, transparent 2px, transparent 40px);
            mask-image: linear-gradient(to right, transparent, black, transparent);
            animation: o6ip-flow 2s linear infinite;
        }

        @keyframes o6ip-flow {
            from { transform: translateX(-40px); }
            to { transform: translateX(0); }
        }

        /* 核心特性 - 非对称网格 */
        .o6ip-efficiency-section {
            padding: 96px 0;
            background: #fafafa;
        }

        .o6ip-section-header {
            margin-bottom: 64px;
            max-width: 800px;
        }

        .o6ip-section-tag {
            display: inline-block;
            background: var(--o6ip-primary);
            color: white;
            padding: 4px 12px;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 16px;
        }

        .o6ip-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
            min-width: 0;
        }

        .o6ip-efficiency-card {
            background: white;
            padding: 40px;
            border-radius: 16px;
            border: 1px solid var(--o6ip-border);
            transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .o6ip-efficiency-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--o6ip-shadow);
            border-color: var(--o6ip-primary);
        }

        .o6ip-card-num {
            font-size: 3rem;
            font-weight: 900;
            color: rgba(191, 0, 0, 0.1);
            margin-bottom: -20px;
        }

        .o6ip-card-title {
            font-size: 1.5rem;
            margin-bottom: 16px;
            color: var(--o6ip-industrial-grey);
        }

        .o6ip-card-desc {
            color: var(--o6ip-text-light);
            margin-bottom: 24px;
            flex-grow: 1;
        }

        .o6ip-card-impact {
            font-weight: 700;
            color: var(--o6ip-primary);
            padding-top: 16px;
            border-top: 1px dashed var(--o6ip-border);
        }

        /* 企业场景 */
        .o6ip-scenarios-section {
            padding: 96px 0;
        }

        .o6ip-scenario-box {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            margin-bottom: 64px;
            align-items: center;
            min-width: 0;
        }

        .o6ip-scenario-box:nth-child(even) {
            flex-direction: row-reverse;
        }

        .o6ip-scenario-text {
            flex: 1 1 450px;
            min-width: 0;
        }

        .o6ip-scenario-title {
            font-size: 2rem;
            margin-bottom: 20px;
            border-left: 4px solid var(--o6ip-primary);
            padding-left: 20px;
        }

        .o6ip-scenario-img-stub {
            flex: 1 1 450px;
            min-width: 0;
            height: 300px;
            background: linear-gradient(135deg, #2C3E50 0%, #000000 100%);
            border-radius: 12px;
            position: relative;
            overflow: hidden;
        }

        .o6ip-scenario-img-stub::before {
            content: 'FILEZILLA PRO';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            color: rgba(255, 255, 255, 0.1);
            font-size: 4rem;
            font-weight: 900;
            white-space: nowrap;
        }

        /* 优化列表区 */
        .o6ip-optimization-list {
            background: var(--o6ip-industrial-grey);
            color: white;
            padding: 80px 0;
            border-radius: 40px 40px 0 0;
        }

        .o6ip-opt-item {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            padding: 24px 0;
            border-bottom: 1px solid rgba(255,255,255,0.1);
            min-width: 0;
        }

        .o6ip-opt-label {
            flex: 0 0 200px;
            font-weight: 700;
            color: var(--o6ip-primary);
            min-width: 0;
        }

        .o6ip-opt-content {
            flex: 1 1 400px;
            min-width: 0;
        }

        /* 页脚 */
        .o6ip-footer {
            background: #1a1a1a;
            color: #999;
            padding: 80px 0 40px;
        }

        .o6ip-footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 48px;
            margin-bottom: 64px;
        }

        .o6ip-footer-brand h2 {
            color: white;
            margin-bottom: 20px;
            font-size: 1.8rem;
        }

        .o6ip-footer-links h4 {
            color: white;
            margin-bottom: 24px;
            font-size: 1.1rem;
        }

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

        .o6ip-footer-links li {
            margin-bottom: 12px;
        }

        .o6ip-footer-links a {
            color: #999;
            text-decoration: none;
            transition: color 0.3s;
        }

        .o6ip-footer-links a:hover {
            color: white;
        }

        .o6ip-copyright {
            text-align: center;
            padding-top: 40px;
            border-top: 1px solid rgba(255,255,255,0.05);
            font-size: 0.9rem;
        }

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .o6ip-hero-title { font-size: 3rem; }
        }

        @media (max-width: 768px) {
            .o6ip-nav-links {
                display: none; /* 简化演示，手机端可隐藏或改为汉堡菜单 */
            }
            .o6ip-hero {
                padding-top: 120px;
                text-align: center;
            }
            .o6ip-hero-subtitle {
                margin-left: auto;
                margin-right: auto;
            }
            .o6ip-hero-visual {
                height: 300px;
            }
            .o6ip-grid {
                grid-template-columns: 1fr;
            }
            .o6ip-scenario-box {
                flex-direction: column !important;
            }
        }