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

body {
    font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.8;
    color: #333;
    background-color: #fff;
}

/* 스크롤 부드럽게 */
html {
    scroll-behavior: smooth;
}

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

/* 헤더 - 제목만 */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: #4facfe;
    color: white;
    z-index: 1000;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    text-align: center;
}

.header-title {
    font-size: 1.6em;
    font-weight: 600;
    letter-spacing: 0.5px;
}

/* 네비게이션 탭 - 헤더 아래 별도 영역 */
.header-nav {
    position: fixed;
    top: 68px;
    left: 0;
    width: 100%;
    background-color: white;
    z-index: 999;
    border-bottom: 2px solid #e0e0e0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.08);
    display: flex;
    justify-content: flex-start;
    gap: 0;
    overflow-x: auto;
    overflow-y: hidden;
    white-space: nowrap;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.header-nav::-webkit-scrollbar {
    display: none;
}

.nav-link {
    padding: 16px 24px;
    color: #333;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s ease;
    font-size: 0.95em;
    border-bottom: 3px solid transparent;
    flex-shrink: 0;
}

.nav-link:hover {
    background-color: #f0f8ff;
    color: #4facfe;
    border-bottom-color: #4facfe;
}

/* 섹션 공통 */
section {
    padding: 80px 20px;
}

/* 첫 번째 섹션은 헤더+탭 높이만큼 여백 추가 */
section:first-of-type {
    padding-top: 140px;
}

.section-title {
    text-align: center;
    font-size: 2.3em;
    margin-bottom: 15px;
    color: #4facfe;
    font-weight: 600;
    letter-spacing: -0.5px;
}

.section-subtitle {
    text-align: center;
    font-size: 1.2em;
    color: #555;
    margin-bottom: 60px;
    font-weight: 400;
    line-height: 1.6;
}

/* 히어로 섹션 */
.hero-section {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    text-align: center;
    padding-top: 80px;
}

.hero-content h1 {
    font-size: 3.2em;
    margin-bottom: 25px;
    color: #1a1a1a;
    font-weight: 600;
    line-height: 1.4;
    letter-spacing: -1px;
}

.hero-content p {
    font-size: 1.4em;
    color: #555;
    margin-bottom: 40px;
    font-weight: 400;
    line-height: 1.7;
}

.cta-button {
    display: inline-block;
    padding: 16px 45px;
    background-color: #4facfe;
    color: white;
    text-decoration: none;
    border-radius: 4px;
    font-size: 1.15em;
    font-weight: 600;
    transition: all 0.2s ease;
    box-shadow: 0 2px 8px rgba(79, 172, 254, 0.2);
    border: 1px solid #3b9ae8;
}

.cta-button:hover {
    background-color: #3b9ae8;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(79, 172, 254, 0.3);
}

/* 프로필 섹션 */
.profile-section {
    background-color: #fff;
    padding-top: 140px;
    padding-bottom: 40px;
}

.profile-wrapper {
    max-width: 900px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: 30px;
}

.profile-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 2px 15px rgba(0,0,0,0.1);
    aspect-ratio: 4 / 5;
    width: 100%;
}

.profile-image-wrapper {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background: transparent;
}

.profile-slider {
    width: 100%;
    height: 100%;
    position: relative;
}

.profile-slide {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.profile-slide.active {
    opacity: 1;
}

.profile-image-wrapper {
    cursor: grab;
    user-select: none;
}

.profile-image-wrapper:active {
    cursor: grabbing;
}

.profile-dots {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 2;
}

.profile-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
}

.profile-dot.active {
    background: white;
    width: 30px;
    border-radius: 5px;
}

.profile-image-wrapper::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 40%;
    background: linear-gradient(to bottom, transparent 0%, rgba(79, 172, 254, 0.7) 50%, #4facfe 100%);
    pointer-events: none;
    z-index: 1;
}

.profile-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
}

.profile-placeholder {
    font-size: 8em;
    color: #ddd;
}

.profile-name-tag {
    position: absolute;
    bottom: 50px;
    right: 20px;
    color: white;
    font-size: 1.1em;
    font-weight: 600;
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
    letter-spacing: 0.5px;
    z-index: 2;
}
    z-index: 2;
}

.profile-career-card {
    background: white;
    border-radius: 20px;
    padding: 40px 35px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.1);
    height: fit-content;
}

.profile-list {
    list-style: none;
}

.profile-list li {
    padding: 10px 0;
    padding-left: 25px;
    position: relative;
    color: #333;
    font-size: 0.95em;
    line-height: 1.6;
}

.profile-list li:before {
    content: "◆";
    position: absolute;
    left: 0;
    color: #4facfe;
    font-size: 0.8em;
}

/* 특징 섹션 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    max-width: 1100px;
    margin: 0 auto;
}

.feature-card {
    background: white;
    padding: 35px 30px;
    border-radius: 8px;
    text-align: center;
    transition: all 0.2s ease;
    border: 1px solid #e0e5ec;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: #0056b3;
    box-shadow: 0 6px 16px rgba(0, 86, 179, 0.15);
    background: #f7f9fc;
}

.feature-icon {
    font-size: 3.5em;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.4em;
    margin-bottom: 15px;
    color: #1a1a1a;
    font-weight: 600;
}

.feature-card p {
    color: #666;
    line-height: 1.8;
}

/* 리뷰 섹션 */
.reviews-section {
    background-color: #f8f9fa;
}

.slider-container {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
    overflow: hidden;
    border-radius: 15px;
    background: white;
    box-shadow: 0 2px 20px rgba(0,0,0,0.08);
}

.slider-wrapper {
    display: flex;
    transition: transform 0.5s ease;
}

.slide {
    min-width: 100%;
    padding: 80px 40px;
    text-align: center;
}

.slide-placeholder {
    font-size: 4em;
    color: #4facfe;
    margin-bottom: 20px;
}

.slide p {
    font-size: 1.2em;
    color: #666;
}

.slider-controls {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 30px;
}

.slider-btn {
    width: 50px;
    height: 50px;
    border: none;
    background-color: #4facfe;
    color: white;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.3em;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(79, 172, 254, 0.3);
}

.slider-btn:hover {
    background-color: #3b9ae8;
    transform: scale(1.1);
}

.slider-dots {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 20px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #ccc;
    cursor: pointer;
    transition: all 0.3s ease;
}

.dot.active {
    background-color: #4facfe;
    width: 30px;
    border-radius: 6px;
}

/* 상품 섹션 */
.products-tabs {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.product-tab-btn {
    padding: 15px 40px;
    border: 2px solid #4facfe;
    background: white;
    color: #4facfe;
    font-size: 1.1em;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.product-tab-btn:hover {
    background-color: #f0f8ff;
}

.product-tab-btn.active {
    background-color: #4facfe;
    color: white;
}

.products-content {
    display: none;
}

.products-content.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1100px;
    margin: 0 auto;
}

.product-card {
    background: white;
    padding: 30px;
    border-radius: 8px;
    text-align: center;
    transition: all 0.2s ease;
    border: 1px solid #e0e5ec;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.product-card:hover {
    transform: translateY(-4px);
    border-color: #0056b3;
    box-shadow: 0 6px 16px rgba(0, 86, 179, 0.15);
    background: #f7f9fc;
}

.product-card h3 {
    font-size: 1.5em;
    margin-bottom: 15px;
    color: #333;
    font-weight: 700;
}

.product-price {
    font-size: 1.8em;
    font-weight: 700;
    color: #4facfe;
    margin: 15px 0;
}

.product-description {
    color: #666;
    margin-bottom: 20px;
    line-height: 1.8;
}

.product-features {
    list-style: none;
    margin: 20px 0;
    text-align: left;
}

.product-features li {
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
    color: #555;
}

.product-features li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #4facfe;
    font-weight: bold;
}

.product-btn {
    display: inline-block;
    padding: 12px 35px;
    background-color: #4facfe;
    color: white;
    text-decoration: none;
    border-radius: 25px;
    transition: all 0.3s ease;
    margin-top: 15px;
    font-weight: 600;
}

.product-btn:hover {
    background-color: #3b9ae8;
    transform: translateY(-2px);
}

/* 연락처 섹션 */
.contact-section {
    background-color: #f8f9fa;
}

.contact-container {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.contact-info {
    background: white;
    padding: 50px 40px;
    border-radius: 20px;
    margin-bottom: 30px;
    border: 2px solid #e9ecef;
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
}

.contact-info h3 {
    font-size: 1.6em;
    margin-bottom: 30px;
    color: #333;
    font-weight: 700;
}

.contact-item {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 15px;
    margin: 15px 0;
    font-size: 1.2em;
    color: #555;
}

.contact-item .icon {
    font-size: 1.5em;
    margin-right: 15px;
    color: #4facfe;
}

/* 푸터 */
footer {
    background-color: #2c3e50;
    color: white;
    text-align: center;
    padding: 50px 20px;
}

footer p {
    margin: 10px 0;
    opacity: 0.9;
}

/* 스티키 버튼 */
.sticky-button {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 999;
    max-width: 90%;
    width: auto;
}

.sticky-button a {
    display: inline-block;
    background: #4facfe;
    color: white;
    text-decoration: none;
    font-size: 1.2em;
    font-weight: 700;
    letter-spacing: 0.5px;
    padding: 18px 40px;
    border-radius: 50px;
    box-shadow: 0 8px 30px rgba(79, 172, 254, 0.4);
    transition: all 0.3s ease;
    white-space: nowrap;
}

.sticky-button a:hover {
    background: #3b9ae8;
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(79, 172, 254, 0.5);
}

.sticky-button a .icon {
    margin-right: 8px;
    font-size: 1.2em;
}

/* FAQ 섹션 */
.faq-section {
    background-color: #f8f9fa;
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    margin-bottom: 15px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    transition: all 0.3s ease;
}

.faq-item:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.faq-question {
    width: 100%;
    padding: 20px 25px;
    background: white;
    border: none;
    text-align: left;
    font-size: 1.05em;
    font-weight: 600;
    color: #333;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
}

.faq-question:hover {
    background-color: #f8f9fa;
    color: #4facfe;
}

.faq-icon {
    font-size: 1.5em;
    color: #4facfe;
    font-weight: 300;
    transition: transform 0.3s ease;
}

.faq-item.active .faq-question {
    background-color: #4facfe;
    color: white;
}

.faq-item.active .faq-icon {
    color: white;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    background-color: #fff;
}

.faq-item.active .faq-answer {
    max-height: 300px;
    padding: 20px 25px;
    border-top: 1px solid #f0f0f0;
}

.faq-answer p {
    margin: 0;
    color: #555;
    line-height: 1.8;
    font-size: 0.98em;
}

/* 반응형 */
@media (max-width: 768px) {
    .header-content {
        padding: 16px 20px;
    }

    .header-title {
        font-size: 1.3em;
    }

    .header-nav {
        top: 60px;
        padding-left: 10px;
    }

    .nav-link {
        padding: 14px 20px;
        font-size: 0.9em;
    }

    section {
        padding: 60px 15px;
    }

    .profile-section {
        padding-top: 140px;
    }

    section:first-of-type {
        padding-top: 140px;
    }

    .hero-content h1 {
        font-size: 2.2em;
    }

    .hero-content p {
        font-size: 1.2em;
    }

    .section-title {
        font-size: 2em;
    }

    .section-subtitle {
        font-size: 1.1em;
    }

    .profile-wrapper {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .profile-card {
        max-width: 100%;
    }

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

    .products-tabs {
        flex-direction: column;
    }

    .product-tab-btn {
        width: 100%;
    }

    .slide {
        padding: 60px 20px;
    }

    .sticky-button {
        bottom: 15px;
        max-width: 95%;
    }

    .sticky-button a {
        font-size: 1em;
        padding: 15px 30px;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 1.8em;
    }

    .hero-content p {
        font-size: 1em;
    }

    .cta-button {
        padding: 15px 35px;
        font-size: 1em;
    }

    .profile-image-container {
        width: 150px;
        height: 150px;
    }
}

/* 데스크톱에서 탭바 중앙 정렬 */
@media (min-width: 769px) {
    .header-nav {
        justify-content: center;
    }
}