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

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f8f9fa;
        }

        .xiqi-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .xiqi-header {
            background: linear-gradient(135deg, #4285f4 0%, #34a853 100%);
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .xiqi-nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }

        .xiqi-logo {
            display: flex;
            align-items: center;
            text-decoration: none;
            color: white;
            font-size: 24px;
            font-weight: bold;
        }

        .xiqi-logo img {
            height: 40px;
            margin-right: 10px;
        }

        .xiqi-nav-menu {
            display: flex;
            list-style: none;
            gap: 30px;
        }

        .xiqi-nav-link {
            color: white;
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s ease;
            padding: 8px 16px;
            border-radius: 20px;
        }

        .xiqi-nav-link:hover {
            background-color: rgba(255,255,255,0.2);
            transform: translateY(-2px);
        }

        .xiqi-hero {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 80px 0;
            text-align: center;
        }

        .xiqi-hero-title {
            font-size: 3.5rem;
            font-weight: 700;
            margin-bottom: 20px;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }

        .xiqi-hero-subtitle {
            font-size: 1.3rem;
            margin-bottom: 40px;
            opacity: 0.9;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .xiqi-cta-button {
            display: inline-block;
            background: linear-gradient(45deg, #ff6b6b, #ee5a24);
            color: white;
            padding: 15px 40px;
            text-decoration: none;
            border-radius: 50px;
            font-size: 1.1rem;
            font-weight: 600;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(0,0,0,0.2);
        }

        .xiqi-cta-button:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(0,0,0,0.3);
        }

        .xiqi-main-content {
            padding: 80px 0;
        }

        .xiqi-section {
            margin-bottom: 60px;
        }

        .xiqi-section-title {
            font-size: 2.5rem;
            color: #2c3e50;
            margin-bottom: 30px;
            text-align: center;
            position: relative;
        }

        .xiqi-section-title::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: linear-gradient(45deg, #4285f4, #34a853);
            border-radius: 2px;
        }

        .xiqi-features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-top: 50px;
        }

        .xiqi-feature-card {
            background: white;
            padding: 40px 30px;
            border-radius: 15px;
            box-shadow: 0 5px 25px rgba(0,0,0,0.1);
            transition: all 0.3s ease;
            text-align: center;
        }

        .xiqi-feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 40px rgba(0,0,0,0.15);
        }

        .xiqi-feature-icon {
            font-size: 3rem;
            margin-bottom: 20px;
            color: #4285f4;
        }

        .xiqi-feature-title {
            font-size: 1.5rem;
            color: #2c3e50;
            margin-bottom: 15px;
            font-weight: 600;
        }

        .xiqi-feature-desc {
            color: #666;
            line-height: 1.7;
        }

        .xiqi-advantages {
            background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
            color: white;
            padding: 80px 0;
            margin: 60px 0;
        }

        .xiqi-advantages-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-top: 50px;
        }

        .xiqi-advantage-item {
            text-align: center;
        }

        .xiqi-advantage-number {
            font-size: 3rem;
            font-weight: 700;
            margin-bottom: 15px;
            opacity: 0.9;
        }

        .xiqi-advantage-text {
            font-size: 1.2rem;
            font-weight: 500;
        }

        .xiqi-usage-scenarios {
            background: white;
            padding: 60px 40px;
            border-radius: 20px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            margin: 40px 0;
        }

        .xiqi-scenario-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
            margin-top: 40px;
        }

        .xiqi-scenario-item {
            padding: 25px;
            border-left: 4px solid #4285f4;
            background: #f8f9fa;
            border-radius: 8px;
            transition: all 0.3s ease;
        }

        .xiqi-scenario-item:hover {
            background: #e3f2fd;
            transform: translateX(10px);
        }

        .xiqi-scenario-title {
            font-size: 1.3rem;
            color: #2c3e50;
            margin-bottom: 10px;
            font-weight: 600;
        }

        .xiqi-scenario-desc {
            color: #666;
            line-height: 1.6;
        }

        .xiqi-cta-section {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 80px 0;
            text-align: center;
            margin: 60px 0;
        }

        .xiqi-cta-title {
            font-size: 2.5rem;
            margin-bottom: 20px;
            font-weight: 700;
        }

        .xiqi-cta-desc {
            font-size: 1.2rem;
            margin-bottom: 40px;
            opacity: 0.9;
        }

        .xiqi-footer {
            background: #2c3e50;
            color: white;
            padding: 40px 0;
            text-align: center;
        }

        .xiqi-footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 30px;
        }

        .xiqi-footer-section h3 {
            margin-bottom: 15px;
            color: #4285f4;
        }

        .xiqi-footer-section p,
        .xiqi-footer-section a {
            color: #bdc3c7;
            text-decoration: none;
            line-height: 1.6;
        }

        .xiqi-footer-section a:hover {
            color: white;
        }

        .xiqi-footer-bottom {
            border-top: 1px solid #34495e;
            padding-top: 20px;
            color: #95a5a6;
        }

        @media (max-width: 768px) {
            .xiqi-nav-menu {
                display: none;
            }

            .xiqi-hero-title {
                font-size: 2.5rem;
            }

            .xiqi-section-title {
                font-size: 2rem;
            }

            .xiqi-features-grid {
                grid-template-columns: 1fr;
            }

            .xiqi-advantages-list {
                grid-template-columns: repeat(2, 1fr);
            }

            .xiqi-scenario-list {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 480px) {
            .xiqi-advantages-list {
                grid-template-columns: 1fr;
            }

            .xiqi-hero-title {
                font-size: 2rem;
            }

            .xiqi-cta-title {
                font-size: 2rem;
            }
        }