/* CSS 변수 정의 */
:root {
    --primary-color: #003366;
    --secondary-color: #0066cc;
    --accent-color: #4d94ff;
    --text-primary: #333333;
    --text-secondary: #666666;
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f5;
    --bg-dark: #2c2c2c;
    --border-color: #e0e0e0;
    --shadow: 0 2px 4px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
}

/* 기본 스타일 */
body {
    font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    line-height: 1.6;
}

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

/* 타이포그래피 */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 1rem;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.1rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 1rem;
}

/* 버튼 스타일 */
.btn {
    display: inline-block;
    padding: 12px 30px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 5px;
    transition: var(--transition);
    font-weight: 500;
    text-align: center;
    cursor: pointer;
}

.btn:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn-secondary {
    background-color: var(--secondary-color);
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: white;
}

/* 섹션 기본 스타일 */
section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    color: var(--primary-color);
    margin-bottom: 20px;
}

.section-title p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* 카드 스타일 */
.card {
    background-color: white;
    border-radius: 10px;
    padding: 30px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.15);
}

/* 헤더 스타일 */
header {
    background-color: var(--primary-color);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: var(--shadow);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    display: inline-block;
    height: 55px;
}

.logo img {
    height: 100%;
    width: auto;
    display: block;
    filter: brightness(0) invert(1);
}

.logo:hover img {
    filter: brightness(0) invert(1) drop-shadow(0 0 3px rgba(255,255,255,0.5));
}

/* 네비게이션 */
.nav-menu {
    display: flex;
    gap: 30px;
}

.nav-menu a {
    color: white;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    padding: 5px 0;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--accent-color);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-color);
    transition: width 0.3s ease;
}

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

/* 모바일 메뉴 버튼 */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: white;
    transition: var(--transition);
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* 메인 콘텐츠 마진 (고정 헤더 대응) */
main {
    margin-top: 70px;
}

/* 푸터 스타일 */
footer {
    background-color: var(--bg-dark);
    color: white;
    padding: 50px 0 30px;
    margin-top: 80px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 30px;
}

.footer-section h3 {
    color: white;
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.footer-section p,
.footer-section ul li {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
    margin-bottom: 10px;
}

.footer-section ul li {
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--accent-color);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 20px;
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

/* 히어로 섹션 */
.hero {
    background-image: linear-gradient(rgba(0, 51, 102, 0.8), rgba(0, 102, 204, 0.8)), url('https://images.unsplash.com/photo-1497366216548-37526070297c?w=1920&h=1080&fit=crop');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: white;
    padding: 150px 0 100px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: -50%;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.05);
    transform: skewX(-20deg);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

.hero-title {
    font-size: 3rem;
    margin-bottom: 20px;
    font-weight: 700;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 40px;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
}

/* Hero 섹션 버튼 스타일 */
.hero .btn {
    background-color: white;
    color: var(--primary-color);
    font-weight: 600;
    padding: 14px 35px;
    font-size: 1.05rem;
}

.hero .btn:hover {
    background-color: rgba(255, 255, 255, 0.9);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.hero .btn-outline {
    background-color: transparent;
    color: white;
    border: 2px solid white;
}

.hero .btn-outline:hover {
    background-color: white;
    color: var(--primary-color);
    border-color: white;
}

/* 서비스 섹션 */
.services {
    background-color: var(--bg-secondary);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card {
    background-color: white;
    padding: 0;
    border-radius: 10px;
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.service-icon {
    width: 100%;
    height: 200px;
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
}

.service-content {
    padding: 30px;
}

.service-card h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

.service-card p {
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.service-link {
    color: var(--secondary-color);
    font-weight: 500;
    transition: var(--transition);
}

.service-link:hover {
    color: var(--primary-color);
}

/* 회사소개 요약 */
.about-summary {
    background-color: white;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h2 {
    color: var(--primary-color);
    margin-bottom: 20px;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.stat {
    text-align: center;
    padding: 20px;
    background-color: var(--bg-secondary);
    border-radius: 10px;
}

.stat h3 {
    font-size: 2.5rem;
    color: var(--secondary-color);
    margin-bottom: 10px;
}

.stat p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* 공지사항 */
.news {
    background-color: var(--bg-secondary);
}

.news-list {
    display: grid;
    gap: 20px;
}

.news-item {
    background-color: white;
    padding: 30px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    gap: 30px;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.news-item:hover {
    transform: translateX(10px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.news-date {
    font-size: 0.9rem;
    color: var(--secondary-color);
    font-weight: 500;
    min-width: 80px;
}

.news-item h3 {
    color: var(--primary-color);
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.news-item p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin: 0;
}

/* 애니메이션 */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}

/* 페이지 배너 */
.page-banner {
    background-image: linear-gradient(rgba(0, 51, 102, 0.85), rgba(0, 102, 204, 0.85)), url('https://images.unsplash.com/photo-1522071820081-009f0129c71c?w=1920&h=1080&fit=crop');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: white;
    padding: 100px 0 60px;
    text-align: center;
    position: relative;
}

.page-banner h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.page-banner p {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* 페이지별 배너 이미지 */
.page-banner.about-banner {
    background-image: linear-gradient(rgba(0, 51, 102, 0.85), rgba(0, 102, 204, 0.85)), url('https://images.unsplash.com/photo-1600880292203-757bb62b4baf?w=1920&h=1080&fit=crop');
}

.page-banner.business-banner {
    background-image: linear-gradient(rgba(0, 51, 102, 0.85), rgba(0, 102, 204, 0.85)), url('https://images.unsplash.com/photo-1553877522-43269d4ea984?w=1920&h=1080&fit=crop');
}

.page-banner.solution-banner {
    background-image: linear-gradient(rgba(0, 51, 102, 0.85), rgba(0, 102, 204, 0.85)), url('https://images.unsplash.com/photo-1551434678-e076c223a692?w=1920&h=1080&fit=crop');
}

.page-banner.contact-banner {
    background-image: linear-gradient(rgba(0, 51, 102, 0.85), rgba(0, 102, 204, 0.85)), url('https://images.unsplash.com/photo-1596524430615-b46475ddff6e?w=1920&h=1080&fit=crop');
}

/* CEO 메시지 */
.ceo-message {
    background-color: white;
}

.ceo-content {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 60px;
    align-items: start;
}

.ceo-placeholder {
    width: 100%;
    height: 350px;
    background-color: var(--bg-secondary);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--text-secondary);
}

.ceo-text p {
    margin-bottom: 20px;
    line-height: 1.8;
    color: var(--text-secondary);
}

.ceo-sign {
    margin-top: 40px;
    text-align: right;
}

.ceo-sign strong {
    display: block;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.ceo-sign span {
    font-size: 1.2rem;
    color: var(--text-primary);
}

/* 비전/미션 */
.vision-mission {
    background-color: var(--bg-secondary);
}

.vm-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.vm-item {
    background-color: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.vm-image {
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    margin: 0;
}

.vm-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, rgba(0,0,0,0.4), rgba(0,0,0,0.7));
    z-index: 1;
}

.vm-image h3 {
    position: relative;
    z-index: 2;
    color: white;
    font-size: 1.8rem;
    font-weight: 600;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
    margin: 0;
}

.vm-item ul {
    list-style: none;
    padding: 30px;
}

.vm-item ul li {
    position: relative;
    padding-left: 25px;
    margin-bottom: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.vm-item ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--secondary-color);
    font-weight: bold;
}

/* 핵심가치 */
.core-values {
    background-color: white;
    padding: 80px 0 100px;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.value-card {
    background-color: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    transition: var(--transition);
}

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

.value-image {
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.value-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, rgba(0,0,0,0.3), rgba(0,0,0,0.6));
    z-index: 1;
}

.value-image h3 {
    position: relative;
    z-index: 2;
    color: white;
    font-size: 1.5rem;
    font-weight: 600;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
    margin: 0;
}

.value-content {
    padding: 30px 25px;
    text-align: center;
}

.value-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* 연혁 */
.history {
    background-color: var(--bg-secondary);
}

.timeline {
    position: relative;
    padding: 20px 0;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 100px;
    width: 2px;
    height: 100%;
    background-color: var(--border-color);
}

.timeline-item {
    display: flex;
    gap: 40px;
    margin-bottom: 40px;
    position: relative;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: 94px;
    top: 5px;
    width: 14px;
    height: 14px;
    background-color: var(--secondary-color);
    border-radius: 50%;
    z-index: 1;
}

.timeline-date {
    width: 80px;
    text-align: right;
    font-weight: 600;
    color: var(--primary-color);
}

.timeline-content {
    flex: 1;
    background-color: white;
    padding: 20px 30px;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.timeline-content h4 {
    color: var(--primary-color);
    margin-bottom: 10px;
}

.timeline-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* 조직구성 */
.organization {
    background-color: var(--bg-secondary);
    padding: 80px 0;
}

.org-chart {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 60px;
    align-items: start;
}

.org-box {
    background-color: var(--primary-color);
    color: white;
    padding: 40px;
    border-radius: 10px;
    text-align: center;
}

.org-box h4 {
    font-size: 1.2rem;
    margin-bottom: 10px;
}

.org-box p {
    font-size: 1.1rem;
    margin-bottom: 10px;
}

.org-box span {
    font-size: 0.9rem;
    opacity: 0.9;
}

.org-info h4 {
    color: var(--primary-color);
    margin-bottom: 15px;
    margin-top: 30px;
}

.org-info h4:first-child {
    margin-top: 0;
}

.org-info ul {
    list-style: none;
}

.org-info ul li {
    color: var(--text-secondary);
    padding-left: 20px;
    margin-bottom: 10px;
    position: relative;
}

.org-info ul li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--secondary-color);
}

.org-info p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* 회사소개 페이지 반응형 */
@media screen and (max-width: 1024px) {
    .values-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }
}

@media screen and (max-width: 768px) {
    .values-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .value-image {
        height: 150px;
    }
    
    .value-icon-wrapper {
        font-size: 3rem;
    }
    
    .value-content {
        padding: 25px 20px;
    }
    
    .value-content h3 {
        font-size: 1.2rem;
    }
}

/* 사업분야 페이지 */
.business-main {
    background-color: white;
    padding-bottom: 80px;
}

/* 탭 네비게이션 */
.business-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 50px;
    flex-wrap: wrap;
    justify-content: center;
}

.tab-btn {
    padding: 15px 30px;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.tab-btn:hover {
    background-color: var(--secondary-color);
    color: white;
    transform: translateY(-2px);
}

.tab-btn.active {
    background-color: var(--primary-color);
    color: white;
}

/* 탭 콘텐츠 */
.tab-content {
    background-color: var(--bg-secondary);
    padding: 50px;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}

.tab-pane h2 {
    color: var(--primary-color);
    margin-bottom: 20px;
}

.tab-intro {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

/* 서비스 그리드 */
.service-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.service-item {
    background-color: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.service-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.service-item h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.service-item p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* 솔루션 페이지 */
.solutions {
    background-color: white;
    padding-bottom: 80px;
}

.solution-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 60px;
}

.solution-card {
    background-color: var(--bg-secondary);
    padding: 40px 30px;
    border-radius: 10px;
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

.solution-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: translateX(-100%);
    transition: transform 0.3s ease;
}

.solution-card:hover::before {
    transform: translateX(0);
}

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

.solution-icon {
    font-size: 4rem;
    margin-bottom: 20px;
    display: inline-block;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.solution-card h2 {
    color: var(--primary-color);
    font-size: 1.8rem;
    margin-bottom: 10px;
}

.solution-card h3 {
    color: var(--secondary-color);
    font-size: 1.1rem;
    margin-bottom: 20px;
}

.solution-card p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 15px;
}

.solution-desc {
    font-size: 0.95rem;
    margin-bottom: 30px;
}

.btn-detail {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 50px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.btn-detail:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

/* 솔루션 상세 섹션 */
.solution-details {
    margin-top: 60px;
}

.detail-content {
    display: none;
    background-color: var(--bg-secondary);
    padding: 50px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    animation: slideIn 0.5s ease;
}

.detail-content.active {
    display: block;
}

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

.detail-content h3 {
    color: var(--primary-color);
    font-size: 1.8rem;
    margin-bottom: 40px;
    text-align: center;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
    margin-bottom: 40px;
}

.feature-item {
    background-color: white;
    padding: 25px 20px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.12);
}

.feature-item h4 {
    color: var(--primary-color);
    font-size: 1.1rem;
    margin-bottom: 10px;
}

.feature-item p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
}

.btn-close {
    background-color: var(--text-secondary);
    color: white;
    border: none;
    padding: 10px 25px;
    border-radius: 5px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: block;
    margin: 0 auto;
}

.btn-close:hover {
    background-color: var(--text-primary);
}

/* 솔루션 페이지 반응형 */
@media screen and (max-width: 1024px) {
    .solution-cards {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .feature-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media screen and (max-width: 768px) {
    .solution-cards {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .solution-card {
        padding: 30px 20px;
    }
    
    .solution-icon {
        font-size: 3rem;
    }
    
    .detail-content {
        padding: 30px 20px;
    }
    
    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .feature-item {
        padding: 20px 15px;
    }
}

@media screen and (max-width: 480px) {
    .solution-card h2 {
        font-size: 1.5rem;
    }
    
    .solution-card h3 {
        font-size: 1rem;
    }
    
    .detail-content h3 {
        font-size: 1.5rem;
        margin-bottom: 30px;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-item h4 {
        font-size: 1rem;
    }
}

/* 연락처 페이지 */
.contact-us {
    background-color: white;
    padding: 80px 0;
}

.section-title {
    font-size: 2.5rem;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 20px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    text-align: center;
    line-height: 1.8;
    margin-bottom: 60px;
}

/* 연락처 아이템 */
.contact-items {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    margin-bottom: 60px;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.contact-item {
    text-align: center;
    padding: 30px 20px;
    background-color: var(--bg-secondary);
    border-radius: 10px;
    transition: var(--transition);
}

.contact-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.contact-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    display: block;
}

.contact-text h3 {
    color: var(--primary-color);
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.contact-text p {
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.contact-text p a {
    color: var(--secondary-color);
    font-weight: 500;
    transition: var(--transition);
}

.contact-text p a:hover {
    color: var(--primary-color);
}

.contact-text span {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* 빠른 연락 안내 */
.quick-contact {
    background-color: var(--primary-color);
    color: white;
    padding: 50px;
    border-radius: 10px;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.quick-contact h3 {
    color: white;
    font-size: 1.8rem;
    margin-bottom: 20px;
}

.quick-contact p {
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.8;
    margin-bottom: 10px;
}

.quick-contact .cta-buttons {
    margin-top: 30px;
}

/* 파트너 섹션 */
.partner-section {
    background-color: var(--bg-secondary);
    padding: 80px 0;
}

.service-highlights {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.highlight-item {
    background-color: white;
    padding: 40px 25px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
}

.highlight-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.highlight-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    display: block;
}

.highlight-item h3 {
    color: var(--primary-color);
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.highlight-item p {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 0.95rem;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
}

.cta-buttons .btn {
    padding: 15px 30px;
    font-size: 1.1rem;
    text-decoration: none;
    border-radius: 50px;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.btn-primary {
    background-color: white;
    color: var(--primary-color);
    border: 2px solid white;
}

.btn-primary:hover {
    background-color: transparent;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.btn-secondary {
    background-color: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background-color: white;
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

/* FAQ 섹션 */
.faq-section {
    background-color: white;
    padding: 80px 0;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
}

.faq-item {
    background-color: var(--bg-secondary);
    padding: 40px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border-left: 4px solid var(--primary-color);
}

.faq-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    border-left-color: var(--secondary-color);
}

.faq-item h3 {
    color: var(--primary-color);
    font-size: 1.2rem;
    margin-bottom: 20px;
    font-weight: 600;
}

.faq-item p {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 0.95rem;
}

/* 연락처 페이지 반응형 */
@media screen and (max-width: 1024px) {
    .contact-items {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
    
    .service-highlights {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media screen and (max-width: 768px) {
    .section-title {
        font-size: 2rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    .contact-items {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .contact-item {
        padding: 25px 20px;
    }
    
    .contact-icon {
        font-size: 2.5rem;
    }
    
    .quick-contact {
        padding: 40px 30px;
    }
    
    .quick-contact h3 {
        font-size: 1.5rem;
    }
    
    .service-highlights {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .highlight-item {
        padding: 30px 20px;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .cta-buttons .btn {
        width: 100%;
        justify-content: center;
    }
    
    .faq-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .faq-item {
        padding: 30px 25px;
    }
}

@media screen and (max-width: 480px) {
    .quick-contact {
        padding: 30px 20px;
    }
    
    .cta-buttons .btn {
        padding: 12px 20px;
        font-size: 1rem;
    }
}

/* 유틸리티 클래스 */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }