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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f8f9fa;
        }

        .l7wf-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .l7wf-header {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .l7wf-nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }

        .l7wf-logo {
            display: flex;
            align-items: center;
            color: white;
            text-decoration: none;
            font-size: 24px;
            font-weight: bold;
        }

        .l7wf-logo img {
            height: 40px;
            margin-right: 10px;
        }

        .l7wf-nav-menu {
            display: flex;
            gap: 30px;
        }

        .l7wf-nav-link {
            color: white;
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s ease;
            padding: 8px 16px;
            border-radius: 20px;
        }

        .l7wf-nav-link:hover {
            background-color: rgba(255,255,255,0.2);
            transform: translateY(-2px);
        }

        .l7wf-hero {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 80px 0;
            text-align: center;
        }

        .l7wf-hero-title {
            font-size: 48px;
            font-weight: bold;
            margin-bottom: 20px;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }

        .l7wf-hero-subtitle {
            font-size: 20px;
            opacity: 0.9;
            max-width: 600px;
            margin: 0 auto;
        }

        .l7wf-main {
            padding: 60px 0;
        }

        .l7wf-content-section {
            background: white;
            border-radius: 15px;
            padding: 40px;
            margin-bottom: 30px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.08);
            transition: transform 0.3s ease;
        }

        .l7wf-content-section:hover {
            transform: translateY(-5px);
        }

        .l7wf-section-title {
            font-size: 28px;
            color: #2c3e50;
            margin-bottom: 25px;
            padding-bottom: 15px;
            border-bottom: 3px solid #667eea;
            position: relative;
        }

        .l7wf-section-title::after {
            content: '';
            position: absolute;
            bottom: -3px;
            left: 0;
            width: 60px;
            height: 3px;
            background: #764ba2;
        }

        .l7wf-step-list {
            list-style: none;
            counter-reset: step-counter;
        }

        .l7wf-step-item {
            counter-increment: step-counter;
            margin-bottom: 25px;
            padding: 20px;
            background: #f8f9fa;
            border-radius: 10px;
            border-left: 4px solid #667eea;
            position: relative;
        }

        .l7wf-step-item::before {
            content: counter(step-counter);
            position: absolute;
            left: -15px;
            top: 20px;
            background: #667eea;
            color: white;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 14px;
        }

        .l7wf-step-title {
            font-size: 20px;
            font-weight: bold;
            color: #2c3e50;
            margin-bottom: 10px;
        }

        .l7wf-step-description {
            color: #666;
            line-height: 1.8;
        }

        .l7wf-feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
            margin-top: 30px;
        }

        .l7wf-feature-card {
            background: white;
            padding: 30px;
            border-radius: 12px;
            box-shadow: 0 3px 15px rgba(0,0,0,0.1);
            text-align: center;
            transition: all 0.3s ease;
        }

        .l7wf-feature-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 8px 25px rgba(0,0,0,0.15);
        }

        .l7wf-feature-icon {
            font-size: 48px;
            margin-bottom: 20px;
            color: #667eea;
        }

        .l7wf-feature-title {
            font-size: 22px;
            font-weight: bold;
            color: #2c3e50;
            margin-bottom: 15px;
        }

        .l7wf-feature-text {
            color: #666;
            line-height: 1.6;
        }

        .l7wf-tips-box {
            background: linear-gradient(135deg, #ffeaa7 0%, #fab1a0 100%);
            padding: 25px;
            border-radius: 12px;
            margin: 30px 0;
            border-left: 5px solid #e17055;
        }

        .l7wf-tips-title {
            font-size: 20px;
            font-weight: bold;
            color: #2d3436;
            margin-bottom: 15px;
            display: flex;
            align-items: center;
        }

        .l7wf-tips-title::before {
            content: '💡';
            margin-right: 10px;
            font-size: 24px;
        }

        .l7wf-tips-list {
            list-style: none;
        }

        .l7wf-tips-list li {
            margin-bottom: 8px;
            padding-left: 20px;
            position: relative;
            color: #2d3436;
        }

        .l7wf-tips-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: #00b894;
            font-weight: bold;
        }

        .l7wf-cta-section {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 60px 0;
            text-align: center;
            margin-top: 60px;
        }

        .l7wf-cta-title {
            font-size: 36px;
            font-weight: bold;
            margin-bottom: 20px;
        }

        .l7wf-cta-text {
            font-size: 18px;
            margin-bottom: 30px;
            opacity: 0.9;
        }

        .l7wf-cta-button {
            display: inline-block;
            background: white;
            color: #667eea;
            padding: 15px 40px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: bold;
            font-size: 18px;
            transition: all 0.3s ease;
            box-shadow: 0 5px 15px rgba(0,0,0,0.2);
        }

        .l7wf-cta-button:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(0,0,0,0.3);
        }

        .l7wf-footer {
            background: #2c3e50;
            color: white;
            padding: 40px 0;
            text-align: center;
        }

        .l7wf-footer-text {
            opacity: 0.8;
            margin-bottom: 10px;
        }

        .l7wf-footer-links {
            display: flex;
            justify-content: center;
            gap: 30px;
            margin-top: 20px;
        }

        .l7wf-footer-link {
            color: white;
            text-decoration: none;
            opacity: 0.8;
            transition: opacity 0.3s ease;
        }

        .l7wf-footer-link:hover {
            opacity: 1;
        }

        @media (max-width: 768px) {
            .l7wf-nav-menu {
                display: none;
            }

            .l7wf-hero-title {
                font-size: 32px;
            }

            .l7wf-hero-subtitle {
                font-size: 16px;
            }

            .l7wf-content-section {
                padding: 25px;
            }

            .l7wf-section-title {
                font-size: 24px;
            }

            .l7wf-feature-grid {
                grid-template-columns: 1fr;
            }

            .l7wf-cta-title {
                font-size: 28px;
            }

            .l7wf-footer-links {
                flex-direction: column;
                gap: 15px;
            }
        }