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

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

        /* 고정 헤더 */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            z-index: 1000;
            padding: 1rem 0;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
            transition: all 0.3s ease;
        }

        .nav-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0 2rem;
        }

        .logo {
            font-size: 1.8rem;
            font-weight: 700;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-menu {
            display: flex;
            list-style: none;
            gap: 2rem;
        }

        .nav-menu a {
            text-decoration: none;
            color: #333;
            font-weight: 500;
            transition: all 0.3s ease;
            position: relative;
        }

        .nav-menu a:hover {
            color: #667eea;
        }

        .nav-menu a:after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            transition: width 0.3s ease;
        }

        .nav-menu a:hover:after {
            width: 100%;
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            cursor: pointer;
        }

        .mobile-menu span {
            width: 25px;
            height: 3px;
            background: #333;
            margin: 3px 0;
            transition: 0.3s;
        }

        /* 메인 콘텐츠 */
        .main-content {
            margin-top: 80px;
        }

        .section {
            padding: 5rem 0;
            position: relative;
            overflow: hidden;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        /* 히어로 섹션 */
        .hero {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            text-align: center;
            min-height: 90vh;
            display: flex;
            align-items: center;
            position: relative;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="40" cy="40" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="70" cy="70" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
            opacity: 0.3;
        }

        .hero-content {
            position: relative;
            z-index: 2;
        }

        .hero h1 {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
            animation: fadeInUp 1s ease;
        }

        .hero p {
            font-size: 1.3rem;
            margin-bottom: 2rem;
            opacity: 0.9;
            animation: fadeInUp 1s ease 0.2s both;
        }

        .cta-button {
            display: inline-block;
            padding: 1rem 2.5rem;
            background: rgba(255, 255, 255, 0.2);
            color: white;
            text-decoration: none;
            border-radius: 50px;
            font-weight: 600;
            border: 2px solid rgba(255, 255, 255, 0.3);
            transition: all 0.3s ease;
            animation: fadeInUp 1s ease 0.4s both;
        }

        .cta-button:hover {
            background: white;
            color: #667eea;
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
        }

        /* 소개 섹션 */
        .about {
            background: #f8f9fa;
        }

        .about-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
        }

        .about-text h2 {
            font-size: 2.5rem;
            font-weight: 700;
            color: #333;
            margin-bottom: 2rem;
        }

        .about-text p {
            font-size: 1.1rem;
            color: #666;
            margin-bottom: 1.5rem;
        }

        .feature-list {
            list-style: none;
            margin-top: 2rem;
        }

        .feature-list li {
            padding: 0.5rem 0;
            display: flex;
            align-items: center;
            color: #555;
        }

        .feature-list li:before {
            content: '✓';
            color: #667eea;
            font-weight: bold;
            margin-right: 1rem;
            font-size: 1.2rem;
        }

        .about-visual {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            border-radius: 20px;
            height: 400px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 4rem;
            position: relative;
            overflow: hidden;
        }

        /* 혜택 섹션 */
        .benefits {
            background: white;
        }

        .benefits h2 {
            text-align: center;
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 3rem;
            color: #333;
        }

        .benefits-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 3rem;
        }

        .benefit-card {
            background: #f8f9fa;
            padding: 2.5rem;
            border-radius: 20px;
            text-align: center;
            transition: all 0.3s ease;
            border: 1px solid #e9ecef;
        }

        .benefit-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
            background: white;
        }

        .benefit-icon {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 2rem;
            font-size: 2rem;
            color: white;
        }

        .benefit-card h3 {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: 1rem;
            color: #333;
        }

        .benefit-card p {
            color: #666;
            font-size: 1rem;
        }

        /* 요금 섹션 */
        .pricing {
            background: #f8f9fa;
        }

        .pricing h2 {
            text-align: center;
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 3rem;
            color: #333;
        }

        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            max-width: 1000px;
            margin: 0 auto;
        }

        .pricing-card {
            background: white;
            border-radius: 20px;
            padding: 3rem 2rem;
            text-align: center;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .pricing-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
        }

        .pricing-card.popular {
            border: 3px solid #667eea;
        }

        .pricing-card.popular:before {
            content: '인기';
            position: absolute;
            top: 20px;
            right: -30px;
            background: #667eea;
            color: white;
            padding: 5px 40px;
            transform: rotate(45deg);
            font-size: 0.9rem;
            font-weight: 600;
        }

        .plan-name {
            font-size: 1.5rem;
            font-weight: 700;
            color: #333;
            margin-bottom: 1rem;
        }

        .plan-price {
            font-size: 2.5rem;
            font-weight: 800;
            color: #667eea;
            margin-bottom: 0.5rem;
        }

        .plan-price span {
            font-size: 1rem;
            color: #666;
            font-weight: 400;
        }

        .plan-features {
            list-style: none;
            margin: 2rem 0;
            text-align: left;
        }

        .plan-features li {
            padding: 0.5rem 0;
            color: #555;
            display: flex;
            align-items: center;
        }

        .plan-features li:before {
            content: '✓';
            color: #667eea;
            font-weight: bold;
            margin-right: 1rem;
        }

        .plan-button {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            width: 100%;
        }

        .plan-button:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
        }

        /* 문의 섹션 */
        .contact {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            text-align: center;
        }

        .contact h2 {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 2rem;
        }

        .contact p {
            font-size: 1.2rem;
            margin-bottom: 3rem;
            opacity: 0.9;
        }

        .contact-form {
            max-width: 600px;
            margin: 0 auto;
        }

        .form-group {
            margin-bottom: 2rem;
            text-align: left;
        }

        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 500;
        }

        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 1rem;
            border: none;
            border-radius: 10px;
            font-size: 1rem;
            background: rgba(255, 255, 255, 0.1);
            color: white;
            backdrop-filter: blur(10px);
        }

        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: rgba(255, 255, 255, 0.7);
        }

        .submit-button {
            background: rgba(255, 255, 255, 0.2);
            color: white;
            border: 2px solid rgba(255, 255, 255, 0.3);
            padding: 1rem 3rem;
            border-radius: 50px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .submit-button:hover {
            background: white;
            color: #667eea;
        }

        /* 푸터 */
        .footer {
            background: #333;
            color: white;
            text-align: center;
            padding: 2rem 0;
        }

        /* 애니메이션 */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

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

            .mobile-menu {
                display: flex;
            }

            .hero h1 {
                font-size: 2.5rem;
            }

            .hero p {
                font-size: 1.1rem;
            }

            .about-content {
                grid-template-columns: 1fr;
                text-align: center;
            }

            .about-text h2 {
                font-size: 2rem;
            }

            .benefits h2,
            .pricing h2,
            .contact h2 {
                font-size: 2rem;
            }

            .section {
                padding: 3rem 0;
            }

            .container {
                padding: 0 1rem;
            }

            .nav-container {
                padding: 0 1rem;
            }

            .pricing-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 480px) {
            .hero h1 {
                font-size: 2rem;
            }

            .logo {
                font-size: 1.5rem;
            }

            .about-visual {
                height: 250px;
                font-size: 2rem;
            }
        }

        /* 스크롤 효과 */
        .fade-in {
            opacity: 0;
            transform: translateY(30px);
            transition: all 0.6s ease;
        }

        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }