/* 기본 리셋 및 변수 설정 - 위캔디오 스타일 */
:root {
    --primary-color: #00c9c8;
    --primary-dark: #00a3e0;
    --secondary-color: #00d4e8;
    --accent-color: #5cc9f5;
    --text-dark: #333333;
    --text-gray: #666666;
    --text-light: #999999;
    --bg-white: #ffffff;
    --bg-light: #fafbfc;
    --bg-gray: #f6f8fa;
    --border-color: #e8ebed;
    --shadow-sm: 0 2px 12px rgba(0, 201, 200, 0.08);
    --shadow-md: 0 4px 20px rgba(0, 201, 200, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 201, 200, 0.15);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --border-radius: 12px;
}

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

body {
    font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text-dark);
    line-height: 1.7;
    background-color: var(--bg-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 히어로 섹션 - 위캔디오 스타일 */
.hero-section {
    background: linear-gradient(135deg, #00c9c8 0%, #00a3e0 50%, #5cc9f5 100%);
    color: var(--bg-white);
    padding: 120px 0 100px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><circle cx="50" cy="50" r="2" fill="rgba(255,255,255,0.1)"/></svg>') repeat;
    opacity: 0.3;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 1.3rem;
    font-weight: 400;
    opacity: 0.95;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
}

/* 산업군 탭 네비게이션 */
.industry-nav {
    background-color: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.industry-tabs {
    list-style: none;
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding: 20px 0;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.industry-tabs::-webkit-scrollbar {
    display: none;
}

.tab-item {
    flex-shrink: 0;
}

.tab-button {
    background: transparent;
    border: 2px solid var(--border-color);
    color: var(--text-gray);
    padding: 14px 28px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    font-family: inherit;
}

.tab-button:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background-color: rgba(0, 201, 200, 0.05);
}

.tab-item.active .tab-button {
    background: linear-gradient(135deg, #00c9c8, #5cc9f5);
    color: var(--bg-white);
    border-color: transparent;
    box-shadow: 0 4px 12px rgba(0, 201, 200, 0.25);
}

/* 메인 콘텐츠 */
.main-content {
    background-color: var(--bg-white);
}

.industry-section {
    display: none;
}

.industry-section.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

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

/* 산업 소개 섹션 */
.intro-section {
    padding: 80px 0 60px;
    text-align: center;
}

.section-title {
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 20px;
    letter-spacing: -1px;
}

.section-description {
    font-size: 1.2rem;
    color: var(--text-gray);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.8;
}

/* 솔루션 섹션 - 위캔디오 스타일 */
.solution-section {
    padding: 60px 0 100px;
    background: linear-gradient(180deg, var(--bg-white) 0%, #fafbfc 50%, #f6f8fa 100%);
    position: relative;
}

.solution-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 300px;
    background: radial-gradient(circle at 50% 0%, rgba(0, 201, 200, 0.03), transparent 70%);
    pointer-events: none;
}

.solution-main-title {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    color: var(--text-dark);
    margin-bottom: 80px;
    letter-spacing: -0.5px;
    position: relative;
    padding-bottom: 20px;
}

.solution-main-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, #00c9c8, #5cc9f5);
    border-radius: 2px;
}

.solution-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    margin-bottom: 120px;
    max-width: 1100px;
    margin-left: auto;
    margin-right: auto;
}

.solution-item.reverse {
    direction: rtl;
}

.solution-item.reverse > * {
    direction: ltr;
}

.solution-item:last-child {
    margin-bottom: 0;
}

/* 솔루션 비주얼 - 위캔디오 스타일 */
.solution-visual {
    position: relative;
}

.visual-placeholder {
    background: linear-gradient(135deg, rgba(0, 201, 200, 0.05) 0%, rgba(92, 201, 245, 0.05) 100%);
    border: 2px solid rgba(0, 201, 200, 0.1);
    border-radius: 20px;
    padding: 80px 60px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 380px;
    position: relative;
    transition: var(--transition);
    box-shadow: 0 4px 20px rgba(0, 201, 200, 0.08);
}

.solution-item:hover .visual-placeholder {
    transform: translateY(-10px);
    box-shadow: 0 12px 40px rgba(0, 201, 200, 0.15);
    border-color: rgba(0, 201, 200, 0.3);
}

.visual-number {
    position: absolute;
    top: 28px;
    left: 28px;
    font-size: 4rem;
    font-weight: 800;
    background: linear-gradient(135deg, rgba(0, 201, 200, 0.15), rgba(92, 201, 245, 0.15));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.visual-icon {
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, #00c9c8, #5cc9f5);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    line-height: 1;
    box-shadow: 0 8px 24px rgba(0, 201, 200, 0.2);
    position: relative;
}

.visual-icon::before {
    content: '';
    position: absolute;
    width: 140px;
    height: 140px;
    border: 2px solid rgba(0, 201, 200, 0.2);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.5;
    }
}

/* 솔루션 콘텐츠 */
.solution-content {
    padding: 20px 0;
}

.solution-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 20px;
    letter-spacing: -0.5px;
    position: relative;
    padding-left: 20px;
}

.solution-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 32px;
    background: linear-gradient(180deg, #00c9c8, #5cc9f5);
    border-radius: 2px;
}

.solution-desc {
    font-size: 1.05rem;
    color: var(--text-gray);
    line-height: 1.8;
    margin-bottom: 28px;
}

.solution-benefits {
    list-style: none;
    padding: 0;
}

.solution-benefits li {
    font-size: 1rem;
    color: var(--text-gray);
    padding: 12px 0 12px 32px;
    position: relative;
    line-height: 1.6;
}

.solution-benefits li::before {
    content: '✓';
    position: absolute;
    left: 0;
    width: 20px;
    height: 20px;
    background: linear-gradient(135deg, #00c9c8, #5cc9f5);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-white);
    font-weight: 700;
    font-size: 0.9rem;
    line-height: 1;
}

/* LMS 솔루션 섹션 */
.lms-section {
    padding: 60px 0;
    background: linear-gradient(135deg, rgba(0, 201, 200, 0.02) 0%, rgba(92, 201, 245, 0.02) 100%);
    border-top: 1px solid rgba(0, 201, 200, 0.08);
    border-bottom: 1px solid rgba(0, 201, 200, 0.08);
}

.lms-container {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.lms-header {
    margin-bottom: 36px;
}

.lms-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
    letter-spacing: -0.3px;
}

.lms-subtitle {
    font-size: 1rem;
    color: var(--text-gray);
    line-height: 1.7;
}

.lms-buttons {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.lms-button {
    display: inline-flex;
    align-items: center;
    padding: 10px 24px;
    background: transparent;
    border: 1.5px solid rgba(0, 201, 200, 0.3);
    border-radius: 50px;
    color: #00c9c8;
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition);
    white-space: nowrap;
}

.lms-button:hover {
    background: linear-gradient(135deg, #00c9c8, #5cc9f5);
    color: var(--bg-white);
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 201, 200, 0.25);
}

/* 고객 사례 섹션 */
.customer-section {
    padding: 100px 0 120px;
    background-color: var(--bg-white);
}

.customer-title {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    color: var(--text-dark);
    margin-bottom: 60px;
    letter-spacing: -0.5px;
    position: relative;
    padding-bottom: 20px;
}

.customer-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, #00c9c8, #5cc9f5);
    border-radius: 2px;
}

.customer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
    max-width: 1100px;
    margin: 0 auto;
}

.customer-card {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 40px 32px;
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    display: block;
    text-decoration: none;
    color: inherit;
}

.customer-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 32px rgba(0, 201, 200, 0.15);
    border-color: var(--primary-color);
    text-decoration: none;
}

.customer-logo {
    background: linear-gradient(135deg, #00c9c8, #5cc9f5);
    color: var(--bg-white);
    font-size: 1.4rem;
    font-weight: 700;
    width: 110px;
    height: 110px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    line-height: 1.3;
    box-shadow: 0 6px 20px rgba(0, 201, 200, 0.2);
    position: relative;
}

.customer-logo::before {
    content: '';
    position: absolute;
    width: 130px;
    height: 130px;
    border: 2px solid rgba(0, 201, 200, 0.15);
    border-radius: 50%;
}

.customer-name {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.customer-category {
    font-size: 0.95rem;
    color: var(--text-light);
    margin-bottom: 28px;
}

.customer-results {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.result-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.result-item strong {
    font-size: 1.6rem;
    font-weight: 800;
    background: linear-gradient(135deg, #00c9c8, #5cc9f5);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
}

.result-item span {
    font-size: 0.85rem;
    color: var(--text-gray);
    line-height: 1.4;
}

/* CTA 섹션 - 위캔디오 스타일 */
.cta-section {
    background: linear-gradient(135deg, #00a3e0 0%, #00c9c8 50%, #5cc9f5 100%);
    color: var(--bg-white);
    padding: 100px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="80" height="80" xmlns="http://www.w3.org/2000/svg"><circle cx="40" cy="40" r="1.5" fill="rgba(255,255,255,0.1)"/></svg>') repeat;
    opacity: 0.4;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 20px;
    letter-spacing: -0.5px;
}

.cta-description {
    font-size: 1.2rem;
    margin-bottom: 48px;
    opacity: 0.95;
}

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

.cta-button {
    display: inline-block;
    padding: 18px 48px;
    font-size: 1.05rem;
    font-weight: 700;
    text-decoration: none;
    border-radius: 50px;
    transition: var(--transition);
    border: 2px solid transparent;
}

.cta-button.primary {
    background-color: var(--bg-white);
    color: #00c9c8;
    box-shadow: 0 4px 16px rgba(255, 255, 255, 0.3);
}

.cta-button.primary:hover {
    background-color: #f0f9ff;
    color: #00a3e0;
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(255, 255, 255, 0.4);
}

.cta-button.secondary {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--bg-white);
    border-color: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(10px);
}

.cta-button.secondary:hover {
    background-color: var(--bg-white);
    color: #00c9c8;
    border-color: var(--bg-white);
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(255, 255, 255, 0.3);
}

/* 푸터 */
.footer {
    background-color: #f8f9fa;
    color: #333;
    padding: 60px 0 30px;
    border-top: 1px solid #e5e5e5;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-left {
    flex: 0 0 280px;
}

.footer-logo-section {
    margin-bottom: 24px;
}

.footer-logo-img {
    height: 32px;
    width: auto;
}

.footer-company-info {
    color: #666;
    font-size: 0.8rem;
    line-height: 1.8;
}

.footer-company-info p {
    margin: 2px 0;
}

.footer-center {
    display: flex;
    gap: 60px;
    flex: 1;
}

.footer-column {
    flex: 0 0 auto;
}

.footer-column-no-title {
    padding-top: 30px;
}

.footer-title {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: #333;
}

.footer-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-list li {
    margin-bottom: 10px;
}

.footer-list a {
    color: #666;
    text-decoration: none;
    font-size: 0.85rem;
    transition: var(--transition);
}

.footer-list a:hover {
    color: #00c9c8;
}

.footer-right {
    flex: 0 0 auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-btn-primary,
.footer-btn-secondary {
    display: inline-block;
    padding: 12px 24px;
    text-align: center;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: 6px;
    transition: var(--transition);
    white-space: nowrap;
}

.footer-btn-primary {
    background: linear-gradient(135deg, #00c9c8, #5cc9f5);
    color: white;
}

.footer-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 201, 200, 0.3);
}

.footer-btn-secondary {
    background: white;
    color: #333;
    border: 1px solid #ddd;
}

.footer-btn-secondary:hover {
    border-color: #00c9c8;
    color: #00c9c8;
}

.footer-bottom {
    border-top: 1px solid #e5e5e5;
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-copyright {
    color: #999;
    font-size: 0.8rem;
}

.footer-links-bottom {
    display: flex;
    gap: 20px;
    font-size: 0.85rem;
}

.footer-links-bottom a {
    color: #666;
    text-decoration: none;
    transition: var(--transition);
}

.footer-links-bottom a:hover {
    color: #00c9c8;
}

.footer-links-bottom .privacy {
    font-weight: 600;
    color: #333;
}

/* 반응형 디자인 - 태블릿 */
@media (max-width: 992px) {
    .hero-title {
        font-size: 2.8rem;
    }

    .hero-subtitle {
        font-size: 1.15rem;
    }

    .section-title {
        font-size: 2.3rem;
    }

    .solution-item {
        grid-template-columns: 1fr;
        gap: 48px;
        margin-bottom: 80px;
    }

    .solution-item.reverse {
        direction: ltr;
    }

    .solution-main-title {
        font-size: 1.7rem;
        margin-bottom: 60px;
    }

    .visual-placeholder {
        min-height: 300px;
        padding: 60px 40px;
    }

    .visual-icon {
        font-size: 5rem;
    }

    .customer-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 24px;
    }
}

/* 반응형 디자인 - 모바일 */
@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }

    .hero-section {
        padding: 80px 0 60px;
    }

    .hero-title {
        font-size: 2.2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .industry-tabs {
        gap: 6px;
        padding: 16px 0;
    }

    .tab-button {
        padding: 12px 24px;
        font-size: 0.9rem;
    }

    .intro-section {
        padding: 60px 0 40px;
    }

    .section-title {
        font-size: 1.9rem;
    }

    .section-description {
        font-size: 1rem;
    }

    .solution-section {
        padding: 40px 0 60px;
    }

    .solution-main-title {
        font-size: 1.4rem;
        margin-bottom: 48px;
    }

    .solution-item {
        gap: 40px;
        margin-bottom: 60px;
    }

    .visual-placeholder {
        min-height: 250px;
        padding: 48px 32px;
    }

    .visual-number {
        font-size: 2.5rem;
        top: 16px;
        left: 16px;
    }

    .visual-icon {
        font-size: 4rem;
    }

    .solution-title {
        font-size: 1.4rem;
    }

    .solution-desc {
        font-size: 0.95rem;
    }

    .solution-benefits li {
        font-size: 0.9rem;
        padding: 10px 0 10px 28px;
    }

    .lms-section {
        padding: 50px 0;
    }

    .lms-title {
        font-size: 1.7rem;
    }

    .lms-subtitle {
        font-size: 0.95rem;
    }

    .lms-buttons {
        gap: 10px;
    }

    .lms-button {
        padding: 9px 20px;
        font-size: 0.9rem;
    }

    .customer-section {
        padding: 60px 0 80px;
    }

    .customer-title {
        font-size: 1.6rem;
        margin-bottom: 40px;
    }

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

    .customer-card {
        padding: 32px 24px;
    }

    .customer-logo {
        width: 80px;
        height: 80px;
        font-size: 1.2rem;
    }

    .customer-name {
        font-size: 1.15rem;
    }

    .result-item strong {
        font-size: 1.4rem;
    }

    .cta-section {
        padding: 80px 0;
    }

    .cta-title {
        font-size: 1.9rem;
    }

    .cta-description {
        font-size: 1rem;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: stretch;
    }

    .cta-button {
        padding: 16px 40px;
        font-size: 1rem;
    }

    .footer-content {
        flex-direction: column;
        gap: 40px;
    }

    .footer-left {
        flex: 1 1 100%;
    }

    .footer-center {
        flex: 1 1 100%;
        gap: 40px;
        flex-wrap: wrap;
    }

    .footer-column {
        flex: 0 0 45%;
    }

    .footer-right {
        flex: 1 1 100%;
        flex-direction: row;
    }

    .footer-btn-primary,
    .footer-btn-secondary {
        flex: 1;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }

    .footer-links-bottom {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.9rem;
    }

    .section-title {
        font-size: 1.6rem;
    }

    .solution-title {
        font-size: 1.25rem;
    }

    .visual-placeholder {
        padding: 40px 24px;
        min-height: 220px;
    }

    .lms-title {
        font-size: 1.5rem;
    }

    .lms-subtitle {
        font-size: 0.9rem;
    }

    .lms-buttons {
        flex-direction: column;
        gap: 8px;
    }

    .lms-button {
        padding: 8px 20px;
        font-size: 0.85rem;
        width: 100%;
        justify-content: center;
    }

    .footer-center {
        flex-direction: column;
        gap: 30px;
    }

    .footer-column {
        flex: 1 1 100%;
    }

    .footer-right {
        flex-direction: column;
    }

    .footer-btn-primary,
    .footer-btn-secondary {
        width: 100%;
    }

    .footer-company-info {
        font-size: 0.75rem;
    }

    .footer-links-bottom {
        flex-direction: column;
        gap: 12px;
    }
}

/* 접근성 */
*:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

button:focus,
a:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

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

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