/* 새로운 Mapply 홈페이지 스타일 - 통일된 톤앤매너 */
:root {
    /* 메인 색상 팔레트 - 모던하고 전문적인 느낌 */
    --primary-color: #4f46e5;
    --primary-light: #6366f1;
    --primary-dark: #3730a3;
    --secondary-color: #06b6d4;
    --accent-color: #10b981;
    --warning-color: #f59e0b;
    
    /* 그라디언트 - 일관된 브랜드 느낌 */
    --gradient-primary: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    --gradient-subtle: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    --gradient-card: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    
    /* 배경 색상 */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-dark: #0f172a;
    
    /* 텍스트 색상 */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --text-light: #94a3b8;
    --text-white: #ffffff;
    
    /* 경계선 및 그림자 */
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-brand: 0 10px 25px -5px rgba(79, 70, 229, 0.2);
    
    /* 간격 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* 폰트 */
    --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* 애니메이션 */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px; /* 네비게이션 바 높이만큼 여백 추가 */
}

body {
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 2200px;
    margin: 0 auto;
    padding: 0 clamp(var(--spacing-md), 5vw, var(--spacing-2xl));
}

/* 네비게이션 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition-normal);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
    border-bottom-color: var(--border-light);
}

.nav-container {
    max-width: 100%;
    margin: 0 auto;
    padding: 0 var(--spacing-2xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

.nav-left {
    display: flex;
    align-items: center;
}

.nav-right {
    display: flex;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--text-primary);
}

.nav-logo {
    width: 36px;
    height: 36px;
}

.brand-text {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.025em;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav-links {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition-normal);
    position: relative;
    padding: var(--spacing-xs) 0;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width var(--transition-normal);
}

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

/* 버튼 형태의 nav-link 스타일 리셋 */
button.nav-link {
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
}

.nav-auth {
    display: flex;
    align-items: center;
}

.auth-buttons {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
    text-align: center;
}

.auth-buttons button.nav-link {
    text-align: center;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
    padding: var(--spacing-xs);
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition-normal);
}

/* 버튼 스타일 - 통일된 디자인 시스템 */
.btn-primary, .btn-secondary, .btn-hero-primary, .btn-hero-secondary, .btn-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.875rem;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: var(--transition-normal);
    line-height: 1;
    letter-spacing: -0.01em;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--text-white);
    box-shadow: var(--shadow-brand);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 15px 35px -5px rgba(79, 70, 229, 0.3);
}

.btn-secondary {
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1.5px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-hero-primary {
    background: var(--gradient-primary);
    color: var(--text-white);
    padding: 24px 48px;
    font-size: 1.4rem;
    border-radius: 12px;
    box-shadow: var(--shadow-brand);
}

.btn-hero-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 40px -10px rgba(79, 70, 229, 0.4);
}

.btn-hero-secondary {
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1.5px solid var(--border-color);
    padding: 24px 48px;
    font-size: 1.4rem;
    border-radius: 12px;
}

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

.btn-cta {
    background: var(--gradient-primary);
    color: var(--text-white);
    padding: 18px 36px;
    font-size: 1.1rem;
    border-radius: 12px;
    box-shadow: var(--shadow-brand);
    font-weight: 700;
}

.btn-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 25px 50px -12px rgba(79, 70, 229, 0.5);
}

/* 히어로 섹션 - 클린하고 현대적인 디자인 */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--bg-primary);
    overflow: hidden;
    padding-top: 72px;
    padding-bottom: var(--spacing-xl);
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 120vh;
    background: var(--gradient-subtle);
    opacity: 0.5;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(79, 70, 229, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(124, 58, 237, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(6, 182, 212, 0.06) 0%, transparent 50%);
}

.hero-content {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    min-height: calc(100vh - 72px);
    padding: var(--spacing-xl) 0;
    max-width: 1400px;
    margin: 0 auto;
}

.hero-left {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2xl);
    margin-left: -2rem;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 6vw, 7.29rem);
    font-weight: 700;
    line-height: 0.9;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.title-line {
    display: block;
    margin-bottom: 0.2em;
}

.highlight {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    padding-bottom: 0.15em;
}

.hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.375rem);
    line-height: 1.6;
    color: var(--text-secondary);
    max-width: 90%;
    font-weight: 500;
}

.action-buttons {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: var(--spacing-2xl);
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.stat {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* 플레이스홀더 박스 */
.placeholder-box {
    background: #f5f5f5;
    border: 2px solid #e0e0e0;
    border-radius: 16px;
    width: 100%;
    height: clamp(400px, 50vh, 600px);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0;
}

.placeholder-content {
    text-align: center;
    color: #666;
}

.placeholder-content i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    display: block;
}

.placeholder-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.placeholder-content p {
    font-size: 1rem;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.6;
}

/* 섹션 헤더 스타일 */
.value-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.value-badge {
    display: inline-block;
    background: var(--gradient-primary);
    color: var(--text-white);
    padding: var(--spacing-xs) var(--spacing-lg);
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-md);
}

.value-title {
    font-family: var(--font-heading);
    font-size: clamp(1.5rem, 4vw, 3.15rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.value-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 0;
    font-weight: 400;
}


/* 핵심 기능 소개 섹션 */
.features-intro-section {
    padding: clamp(var(--spacing-lg), 8vh, var(--spacing-xl)) 0;
    background: var(--bg-secondary);
}

.features-showcase {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4xl);
}

/* 개별 기능 섹션 */
.feature-section {
    position: relative;
    padding: clamp(var(--spacing-lg), 6vh, var(--spacing-xl)) 0;
}

/* 기능 콘텐츠 영역 */
.feature-content {
    margin-top: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.feature-visual {
    width: 80%;
    margin: 0 auto;
}

.feature-demo-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: clamp(300px, 40vh, 540px);
    background: var(--bg-secondary);
    border-radius: 20px;
    border: 2px dashed var(--border-color);
    color: var(--text-secondary);
    transition: var(--transition-normal);
}

.feature-demo-box:hover {
    border-color: var(--primary-color);
    background: var(--bg-primary);
}

.feature-demo-box i {
    font-size: 2.7rem;
    margin-bottom: var(--spacing-md);
    color: var(--primary-color);
}

.feature-demo-box span {
    font-size: 1.1rem;
    font-weight: 500;
}

.feature-benefits {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    justify-content: center;
    align-items: center;
}

.feature-benefits .benefit-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    justify-content: center;
}

.feature-benefits span {
    background: var(--bg-secondary);
    color: var(--primary-color);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    border: 1px solid var(--border-light);
}

.feature-link {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 8px;
    transition: var(--transition-fast);
    position: relative;
    border: 1px solid var(--primary-color);
    margin-top: var(--spacing-md);
}

.value-header .feature-link {
    margin-top: var(--spacing-xl);
}

.feature-link:hover {
    background: var(--accent-color);
    border-color: var(--accent-color);
}

.feature-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: transparent;
    transition: width 0.3s ease;
}

.feature-link:hover::after {
    width: 0;
}

/* 편의 기능 섹션 */
.convenience-section {
    padding: clamp(var(--spacing-lg), 8vh, var(--spacing-2xl)) 0;
    background: var(--bg-primary);
}

.convenience-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-3xl);
}

.convenience-card {
    background: var(--bg-secondary);
    padding: clamp(var(--spacing-lg), 4vw, var(--spacing-2xl));
    border-radius: 20px;
    text-align: center;
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

.convenience-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    border-color: var(--primary-color);
}

.convenience-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
    font-size: 2rem;
    color: var(--text-white);
}

.convenience-card h4 {
    font-family: var(--font-heading);
    font-size: clamp(1.125rem, 2.5vw, 1.25rem);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.convenience-card p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.convenience-list {
    list-style: none;
    padding: 0;
    margin: 0;
    text-align: left;
}

.convenience-list li {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.convenience-list li::before {
    content: '✓';
    color: var(--primary-color);
    font-weight: 600;
    width: 16px;
    flex-shrink: 0;
}

/* 보안 & 안정성 섹션 */
.security-section {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-secondary);
}

.security-features {
    margin-top: var(--spacing-3xl);
}

.security-main {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-3xl);
    align-items: center;
    margin-bottom: var(--spacing-3xl);
    padding: var(--spacing-2xl);
    background: var(--bg-primary);
    border-radius: 24px;
    border: 1px solid var(--border-color);
}

.security-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.security-icon {
    width: 100px;
    height: 100px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: var(--text-white);
    position: relative;
    z-index: 2;
}

.security-rings {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.ring {
    position: absolute;
    border: 2px solid var(--primary-color);
    border-radius: 50%;
    opacity: 0.2;
    animation: pulse 2s infinite;
}

.ring-1 {
    width: 140px;
    height: 140px;
    top: -70px;
    left: -70px;
}

.ring-2 {
    width: 180px;
    height: 180px;
    top: -90px;
    left: -90px;
    animation-delay: 0.5s;
}

.ring-3 {
    width: 220px;
    height: 220px;
    top: -110px;
    left: -110px;
    animation-delay: 1s;
}

@keyframes pulse {
    0% {
        transform: scale(0.8);
        opacity: 0.3;
    }
    50% {
        transform: scale(1);
        opacity: 0.1;
    }
    100% {
        transform: scale(1.2);
        opacity: 0;
    }
}

.security-info h3 {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.security-info p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 1.1rem;
}

.security-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.security-item {
    background: var(--bg-primary);
    padding: var(--spacing-xl);
    border-radius: 16px;
    text-align: center;
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

.security-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.security-item i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.security-item h4 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.security-item p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* 통계 & 신뢰성 섹션 */
.stats-section {
    padding: clamp(var(--spacing-lg), 8vh, var(--spacing-2xl)) 0;
    background: var(--gradient-primary);
    color: var(--text-white);
}

.stat-desc {
    font-size: 0.9rem;
    opacity: 0.8;
    margin-top: var(--spacing-xs);
}

.section-split {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--spacing-3xl);
    align-items: start;
    margin-top: var(--spacing-2xl);
}

.split-left {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.split-left h2 {
    font-family: var(--font-heading);
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.split-left > p {
    font-size: clamp(1rem, 2vw, 1.125rem);
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-xl);
}

.use-case-tabs {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.tab-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: 12px;
    cursor: pointer;
    transition: var(--transition-normal);
    border: 2px solid transparent;
}

.tab-item:hover {
    background: var(--bg-secondary);
}

.tab-item.active {
    background: var(--gradient-primary);
    color: var(--text-white);
    border-color: var(--primary-color);
}

.tab-item i {
    font-size: 1.25rem;
}

.tab-item span {
    font-weight: 600;
    font-size: 1rem;
}

.split-right {
    position: relative;
}

.case-content {
    display: none;
    background: var(--bg-secondary);
    border-radius: 20px;
    padding: var(--spacing-2xl);
    border: 1px solid var(--border-color);
}

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

.case-content h3 {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.case-content p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
}

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

.case-benefits li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) 0;
    color: var(--text-secondary);
}

.case-benefits li::before {
    content: '✓';
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    color: var(--text-white);
    border-radius: 50%;
    font-size: 0.75rem;
    font-weight: 600;
    flex-shrink: 0;
}

/* 통계 섹션 */
.stats-section {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.stats-section .value-badge {
    background: var(--gradient-primary);
    color: var(--text-white);
}

.stats-section .value-title {
    color: var(--text-primary);
}

.stats-section .value-subtitle {
    color: var(--text-secondary);
}

.experience-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    line-height: 1;
    color: var(--text-primary);
}

.stat-label {
    font-size: 1rem;
    opacity: 0.8;
    font-weight: 500;
    color: var(--text-secondary);
}

/* 기존 about-section 스타일 유지 */
.about-section {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-primary);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.about-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
}

.about-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.about-feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-primary);
    font-weight: 500;
}

.about-feature i {
    color: var(--secondary-color);
    font-size: 1.2rem;
}

.about-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 400px;
}

.visual-card {
    position: absolute;
    background: var(--bg-card);
    border-radius: 16px;
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: all 0.3s ease;
    width: 180px;
}

.visual-card:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-xl);
}

.visual-card i {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.visual-card h4 {
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--text-primary);
}

.card-1 {
    top: 0;
    left: 50%;
    transform: translateX(-50%);
}

.card-2 {
    bottom: 0;
    left: 0;
}

.card-3 {
    bottom: 0;
    right: 0;
}

/* 고객 후기 섹션 */
.testimonials-section {
    padding: clamp(var(--spacing-lg), 8vh, var(--spacing-2xl)) 0;
    background: linear-gradient(135deg, #f8f9ff 0%, #e8ebff 50%, #dde2ff 100%);
    color: var(--text-primary);
}

.testimonials-section .value-badge {
    background: var(--gradient-primary);
    color: var(--text-white);
}

.testimonials-section .value-title {
    color: var(--text-primary);
}

.testimonials-section .value-subtitle {
    color: var(--text-secondary);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-2xl);
    margin-top: var(--spacing-3xl);
}

.testimonial-card {
    background: rgba(255, 255, 255, 0.95);
    padding: clamp(var(--spacing-lg), 4vw, var(--spacing-2xl));
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition-normal);
    position: relative;
    backdrop-filter: blur(10px);
}

.testimonial-card::before {
    content: '"';
    position: absolute;
    top: -10px;
    left: var(--spacing-lg);
    font-size: 4rem;
    color: var(--primary-color);
    font-family: Georgia, serif;
    line-height: 1;
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    border-color: var(--primary-color);
}

.testimonial-content {
    margin-bottom: var(--spacing-lg);
}

.testimonial-content p {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--text-secondary);
    margin: 0;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.author-info h4 {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
}

.author-info span {
    font-size: 0.9rem;
    color: var(--primary-color);
    font-weight: 500;
}

/* 고객 후기 섹션 */
.testimonial-section {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-secondary);
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-2xl);
    margin-top: var(--spacing-3xl);
}

.testimonial-card {
    background: var(--bg-primary);
    border-radius: 20px;
    padding: var(--spacing-2xl);
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
    position: relative;
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    border-color: var(--primary-color);
}

.testimonial-card::before {
    content: '"';
    position: absolute;
    top: -10px;
    left: var(--spacing-lg);
    font-size: 4rem;
    color: var(--primary-color);
    font-family: serif;
    line-height: 1;
}

.testimonial-content {
    margin-bottom: var(--spacing-2xl);
}

.testimonial-content p {
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--text-primary);
    margin: 0;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.author-avatar {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-white);
    font-size: 1.25rem;
    flex-shrink: 0;
}

.author-info {
    flex: 1;
}

.author-name {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.author-company {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* 가치 제안 섹션 */
.value-proposition-section {
    padding: var(--spacing-xl) 0;
    background: var(--gradient-primary);
    color: var(--text-white);
    text-align: center;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    min-height: 200px;
}

.value-proposition-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 70% 70%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
}

.value-proposition-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
}

.value-proposition-title {
    font-family: var(--font-heading);
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.value-proposition-subtitle {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
    margin: 0;
    line-height: 1.4;
}

.value-proposition-actions {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
}

.btn-cta-white {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    background: white;
    color: var(--primary-color);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    border-radius: 8px;
    transition: var(--transition-normal);
    border: 2px solid white;
}

.btn-cta-white:hover {
    background: rgba(255, 255, 255, 0.9);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.btn-cta-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    background: transparent;
    color: white;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    border-radius: 8px;
    transition: var(--transition-normal);
    border: 2px solid rgba(255, 255, 255, 0.5);
}

.btn-cta-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: white;
    transform: translateY(-2px);
}

/* CTA 섹션 - 강력한 마무리 */
.cta-section {
    padding: clamp(var(--spacing-lg), 8vh, var(--spacing-2xl)) 0;
    background: var(--gradient-primary);
    color: var(--text-white);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
}

.cta-section .value-header {
    position: relative;
    z-index: 1;
}

.cta-section .value-badge {
    background: rgba(255, 255, 255, 0.2);
    color: var(--text-white);
    backdrop-filter: blur(10px);
}

.cta-section .value-title {
    color: var(--text-white);
}

.cta-section .value-subtitle {
    color: rgba(255, 255, 255, 0.9);
}

.cta-actions {
    position: relative;
    z-index: 1;
    margin-top: var(--spacing-xl);
}

.btn-cta {
    background: var(--bg-primary);
    color: var(--primary-color);
    font-weight: 700;
    padding: var(--spacing-md) var(--spacing-2xl);
    border-radius: 50px;
    font-size: 1.125rem;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.btn-cta:hover {
    background: var(--bg-secondary);
    transform: translateY(-2px);
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.3);
}

/* 푸터 - 깔끔하고 정보가 잘 정리된 */
.footer {
    background: var(--bg-dark);
    color: var(--text-white);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2xl);
}

.footer-main {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: var(--spacing-3xl);
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.footer-logo {
    width: 36px;
    height: 36px;
}

.footer-brand-text {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-white);
    letter-spacing: -0.025em;
}

.footer-tagline {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.5;
    max-width: 280px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.footer-column h4 {
    font-family: var(--font-heading);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-white);
    font-size: 0.95rem;
}

.footer-column a {
    display: block;
    color: var(--text-light);
    text-decoration: none;
    margin-bottom: var(--spacing-xs);
    transition: var(--transition-normal);
    font-size: 0.9rem;
}

.footer-column a:hover {
    color: var(--text-white);
    transform: translateX(4px);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: var(--text-light);
    font-size: 0.875rem;
}

.footer-social {
    display: flex;
    gap: var(--spacing-md);
}

.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-white);
    text-decoration: none;
    transition: var(--transition-normal);
    font-size: 1.1rem;
}

.footer-social a:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
}

/* 애니메이션 */
.animate-in {
    animation: fadeInUp 0.6s ease forwards;
}

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

/* 반응형 디자인 - 모바일 우선 */
@media (max-width: 1024px) {
    .hero-section {
        padding-top: 72px;
        min-height: 100vh;
    }
    
    .hero-content {
        gap: var(--spacing-2xl);
        grid-template-columns: 1fr;
        text-align: center;
        padding: var(--spacing-xl) var(--spacing-lg);
        min-height: calc(100vh - 72px);
    }
    
    .hero-left {
        margin-left: 0;
        align-items: center;
    }
    
    .placeholder-box {
        height: clamp(300px, 40vh, 500px);
        margin: 0 auto;
    }
    
    .value-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: var(--spacing-lg);
    }
    
    .section-split {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .experience-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .hero-section {
        padding-top: calc(72px + var(--spacing-2xl));
    }
    
    .nav-menu {
        position: fixed;
        top: 72px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 72px);
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: flex-start;
        padding-top: var(--spacing-2xl);
        transition: left var(--transition-normal);
        border-bottom: 1px solid var(--border-color);
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-links {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-lg);
    }

    .nav-link {
        font-size: 1.1rem;
        padding: var(--spacing-sm) 0;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-2xl);
        padding: var(--spacing-lg) var(--spacing-md);
        min-height: calc(100vh - 72px);
    }

    .hero-left {
        margin-left: 0;
        align-items: center;
    }

    .action-buttons {
        justify-content: center;
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-md);
        width: 100%;
    }
    
    .btn-hero-primary,
    .btn-hero-secondary {
        width: 100%;
        max-width: 300px;
    }

    .placeholder-box {
        height: clamp(250px, 35vh, 400px);
        margin: 0 auto;
    }
    
    .value-title {
        font-size: 2.7rem;
    }
    
    .features-showcase {
        gap: var(--spacing-2xl);
    }
    
    .feature-section {
        padding: var(--spacing-xl) 0;
    }
    
    .feature-demo-box {
        height: 500px;
    }
    
    .convenience-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
    
    .testimonial-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: var(--spacing-lg);
    }
    
    .security-main {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-xl);
    }
    
    .security-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
    
    .use-case-tabs {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-sm);
        margin-bottom: var(--spacing-xl);
    }
    
    .experience-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }
    
    .stat-number {
        font-size: 2.5rem;
    }

    .placeholder-content h3 {
        font-size: 1.25rem;
    }

    .placeholder-content p {
        font-size: 0.875rem;
    }

    .card-icon {
        width: 35px;
        height: 35px;
        font-size: 1rem;
    }

    .connection-lines {
        width: 200px;
        height: 200px;
    }

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

    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-xl);
    }

    .footer-main {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-xl);
    }

    .footer-links {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-lg);
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-lg);
        text-align: center;
    }

    .cta-title {
        font-size: 1.875rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    .nav-container {
        padding: 0 var(--spacing-md);
    }

    .hero-content {
        padding: var(--spacing-md);
        gap: var(--spacing-lg);
    }
    
    .hero-left {
        gap: var(--spacing-lg);
    }

    .btn-hero-primary,
    .btn-hero-secondary {
        padding: 14px 24px;
        font-size: 0.95rem;
    }

    .btn-cta {
        padding: 16px 28px;
        font-size: 1rem;
    }

    .placeholder-box {
        height: clamp(200px, 30vh, 300px);
        width: 100%;
    }

    .placeholder-content h3 {
        font-size: 1.125rem;
    }

    .placeholder-content p {
        font-size: 0.8rem;
    }

    .section-title {
        font-size: 1.75rem;
    }
    
    .value-title {
        font-size: 2.25rem;
    }
    
    .value-proposition-title {
        font-size: 2rem;
    }
    
    .value-proposition-subtitle {
        font-size: 0.96rem;
    }
    
    .value-proposition-actions {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .btn-cta-white,
    .btn-cta-outline {
        padding: 12px 24px;
        font-size: 0.95rem;
        width: 100%;
        max-width: 280px;
    }
    
    .features-showcase {
        gap: var(--spacing-lg);
    }
    
    .feature-section {
        padding: var(--spacing-lg) 0;
    }
    
    .feature-demo-box {
        height: 400px;
    }
    
    .feature-demo-box i {
        font-size: 2rem;
    }
    
    .feature-demo-box span {
        font-size: 0.9rem;
    }
    
    .convenience-card h3 {
        font-size: 1.1rem;
    }
    
    .convenience-card p {
        font-size: 0.8rem;
    }
    
    .security-rings {
        width: 180px;
        height: 180px;
    }
    
    .security-item h3 {
        font-size: 1.1rem;
    }
    
    .security-item p {
        font-size: 0.8rem;
    }
    
    .stat-number {
        font-size: 1.8rem;
    }
    
    .stat-label {
        font-size: 0.85rem;
    }
    
    .testimonial-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .testimonial-card {
        padding: var(--spacing-lg);
    }
    
    .testimonial-content p {
        font-size: 1rem;
    }

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

    .footer {
        padding: var(--spacing-2xl) 0 var(--spacing-lg);
    }
}

/* 접근성 향상 */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* 다크 모드 대응 준비 */
@media (prefers-color-scheme: dark) {
    /* 다크 모드 스타일은 추후 추가 가능 */
}