/* CSS 최적화 및 반응형 개선 */

/* 기본 스타일 및 리셋 */
*,
*::before,

:root {
    /* CSS 변수 정의로 일관성 확보 */
    --primary-blue: #0071E3;
    --primary-blue-dark: #005bb5;
    --primary-gradient: linear-gradient(135deg, #0A2540, #1D4ED8);
    --secondary-gradient: linear-gradient(115deg, #FF9F5A 18.62%, #D44FB8 46.79%, #8E4BD2 61.58%, #42A3F5 89.04%);
    
    --text-primary: #1B1B1B;
    --text-secondary: #636363;
    --text-light: #999;
    --text-white: #FFFFFF;
    
    --bg-primary: #FAFAFA;
    --bg-secondary: #F5F5F7;
    --bg-dark: #08223D;
    --bg-card: #FFFFFF;
    
    --border-color: #eee;
    --border-light: rgba(255, 255, 255, 0.1);
    
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.15);
    
    --border-radius-sm: 0.5rem;
    --border-radius-md: 1rem;
    --border-radius-lg: 1.25rem;
    --border-radius-xl: 2.875rem;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;
    
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    --container-max-width: 71.375rem;
    --container-padding: 2rem;



    --accent:#1e8cff;
  
}

/* 성능 최적화를 위한 기본 설정 */
html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--text-primary);
    background: var(--bg-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
}

/* 공통 컨테이너 */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;

    width: 100%;
}

/* 헤딩 초기화 */
h1, h2, h3, h4, h5, h6 {
    all: unset;
    display: block;
    font-family: inherit;
}

/* 이미지 최적화 */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* 링크 스타일 */
a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-normal);
}

/* 접근성 개선 */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* 포커스 가시성 개선 */
:focus-visible {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
    border-radius: var(--border-radius-sm);
}

/* 히어로 섹션 최적화 */
.hero-section {
    min-height: 50vh;
    background: var(--primary-gradient);
    position: relative;
    display: flex;
    align-items: center;
    color: var(--text-white);
    margin-top: 70px;
    padding: var(--spacing-lg) 0;
    overflow: hidden;
}

.hero-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% 30%, rgba(255,255,255,0.08) 0%, transparent 50%),
        radial-gradient(circle at 60% 70%, rgba(255,255,255,0.06) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 2;
    max-width: 1000px;
    margin: 0 auto;
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-white);
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 3rem;
    font-weight: 400;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

/* 통계 그리드 최적화 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(200px, 100%), 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.stat-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-md);
    text-align: center;
    border: 1px solid var(--border-light);
    transition: transform var(--transition-normal);
    will-change: transform;
}

.stat-card:hover {
    transform: translateY(-5px);
}

.stat-number {
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 700;
    color: #FFFCE2;
    display: block;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--font-size-sm);
    line-height: 1.4;
}

.data-source {
    margin-top: var(--spacing-md);
    text-align: center;
    font-size: var(--font-size-xs);
    color: rgba(255, 255, 255, 0.7);
    font-style: italic;
}

/* 섹션 공통 스타일 */
.section {
    padding: var(--spacing-xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: 5rem;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.3;
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
    font-weight: 500;
    line-height: 1.6;
}

/* 다크 섹션 스타일 */
.section-dark {
    background: var(--bg-dark);
    color: var(--text-white);
}

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

.section-dark .section-subtitle {
    color: #cbd5e1;
}

.section-light {
    background: var(--bg-secondary);
}

/* 위협 슬라이더 최적화 */
.threat-slider {
    position: relative;
    max-width: 1000px;
    margin: auto;
    overflow: hidden;
    border-radius: var(--border-radius-lg);
}

.threat-slides {
    display: flex;
    transition: transform var(--transition-slow);
    will-change: transform;

    
}

.threat-slide {
    min-width: 87%;
    padding: var(--spacing-lg);
    display: grid;
    grid-template-columns: 1fr 2fr;
    align-items: center;
    gap: var(--spacing-lg);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius-lg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-light);
}

.threat-image {
    max-width: 100%;
    max-height: 500px;
    aspect-ratio: 3/2;
    background: var(--primary-gradient);
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    position: relative;
    overflow: hidden;
    justify-self: center;
}

.threat-content {
    min-height: 200px;
    margin-bottom: -50px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.threat-slide-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-white);
    line-height: 1.2;
}

.threat-slide-description {
    font-size: var(--font-size-base);
    color: #cbd5e1;
    line-height: 1.7;
    
}

/* 슬라이더 네비게이션 최적화 */
.slider-nav {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: 3rem;
    flex-wrap: wrap;
}

.nav-btn {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-white);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius-xl);
    padding: 0.8rem 1.5rem;
    cursor: pointer;
    transition: all var(--transition-normal);
    font-size: var(--font-size-sm);
    font-weight: 500;
    font-family: inherit;
    white-space: nowrap;
    min-width: 200px;
}

.nav-btn:hover,
.nav-btn.active {
    background: var(--primary-blue);
    color: var(--text-white);
    border-color: var(--primary-blue);
    transform: translateY(-2px);
}

.slider-indicators {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-md);
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.indicator.active {
    background: var(--primary-blue);
}

/* 봇 탐지 기법 그리드 최적화 */
.bot-techniques-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.technique-card {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    padding: 2.5rem var(--spacing-md);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
    will-change: transform;
}

.technique-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.technique-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    line-height: 1;
}

.technique-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.3;
}

.technique-card p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.6;
}

.conclusion-box {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-md);
    margin-top: 3rem;
    text-align: center;
    box-shadow: var(--shadow-md);
    border-left: 4px solid var(--primary-blue);
}

.conclusion-box p {
    font-size: var(--font-size-lg);
    color: var(--text-primary);
    line-height: 1.7;
    margin: 0;
}

/* 솔루션 섹션 최적화 */
.solution-hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
    margin-bottom: 6rem;
}

.solution-content h2 {
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    line-height: 1.3;
    letter-spacing: -0.02em;
}

.solution-description {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

.solution-features {
    list-style: none;
    margin: 0;
    padding: 0;
    margin-top: var(--spacing-md);
}

.solution-features li {
    display: flex;
    align-items: flex-start;
    margin-bottom: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    line-height: 1.6;
    transition: all var(--transition-normal);
}

.solution-features li:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
}

.solution-features li::before {
    content: '✓';
    background: var(--primary-gradient);
    color: var(--text-white);
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: var(--spacing-sm);
    font-weight: bold;
    font-size: var(--font-size-xs);
    flex-shrink: 0;
    margin-top: 2px;
}

.solution-visual {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    padding: 3rem;
    box-shadow: var(--shadow-xl);
    text-align: center;
    position: relative;
}

/* 브라우저 모킹 최적화 */
.browser-mockup {
    background: #f8fafc;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.browser-header {
    display: flex;
    align-items: center;
    background: #e2e8f0;
    border-radius: 8px;
    padding: 0.5rem var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.browser-dots {
    display: flex;
    gap: 0.3rem;
    margin-right: var(--spacing-sm);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.red { background: #ef4444; }
.dot.yellow { background: #eab308; }
.dot.green { background: #22c55e; }

.browser-url {
    background: var(--bg-card);
    border-radius: 6px;
    padding: 0.3rem 0.8rem;
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    flex: 1;
}

.simulation-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.sim-step {
    background: #f8fafc;
    padding: 0.8rem;
    border-radius: var(--border-radius-sm);
    border-left: 3px solid var(--primary-blue);
    font-size: var(--font-size-xs);
    color: var(--text-primary);
    line-height: 1.5;
}

/* 비교 테이블 최적화 */
.comparison-table {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    margin-top: 3rem;
    box-shadow: var(--shadow-xl);
}

.table-header {
    background: var(--primary-gradient);
    color: var(--text-white);
    padding: 1.5rem;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--spacing-sm);
    align-items: center;
    font-weight: 600;
    font-size: var(--font-size-base);
}

.table-row {
    padding: var(--spacing-sm) 1.5rem;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--spacing-sm);
    align-items: center;
    border-bottom: 1px solid #f1f5f9;
    color: var(--text-primary);
    transition: background-color var(--transition-fast);
}

.table-row:hover {
    background-color: #f8fafc;
}

.table-row:last-child {
    border-bottom: none;
}

.feature-name {
    font-weight: 500;
    color: var(--text-primary);
}

.check {
    color: #22c55e;
    font-size: var(--font-size-lg);
    font-weight: bold;
}

.x-mark {
    color: #ef4444;
    font-size: var(--font-size-lg);
    font-weight: bold;
}

/* CTA 섹션 최적화 */
.cta-section {
    background: var(--primary-gradient);
    text-align: center;
    color: var(--text-white);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 40%, rgba(255,255,255,0.1) 0%, transparent 70%);
    pointer-events: none;
}

.cta-title {
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-white);
    line-height: 1.3;
    position: relative;
    z-index: 2;
}

.cta-description {
    font-size: var(--font-size-lg);
    margin-bottom: 3rem;
    opacity: 0.9;
    line-height: 1.6;
    position: relative;
    z-index: 2;
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    position: relative;
    z-index: 2;
}

.cta-button {
    display: inline-block;
    padding: var(--spacing-sm) 2.5rem;
    background: var(--bg-card);
    color: var(--primary-blue);
    text-decoration: none;
    border-radius: var(--border-radius-xl);
    font-weight: 600;
    font-size: var(--font-size-base);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-lg);
    white-space: nowrap;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.cta-button.secondary {
    background: transparent;
    color: var(--text-white);
    border: 2px solid var(--text-white);
}

.cta-button.secondary:hover {
    background: var(--text-white);
    color: var(--primary-blue);
}

.closing-message {
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-md);
    margin-top: 3rem;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-light);
    position: relative;
    z-index: 2;
}

.closing-message p {
    font-size: var(--font-size-base);
    line-height: 1.7;
    margin: 0;
    color: rgba(255, 255, 255, 0.9);
}
/*-------------------test---------------------------------*/
.nav-group {
    position: relative;
}

.nav-group .has-sub {
    all: unset;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 4px;
 
    font-size: 16px;
    font-weight: 500;
    color: #1E1E1E;
    transition: color 0.3s ease;
}

.nav-group .has-sub::after {
    content: '▼';
    font-size: 10px;
    margin-left: 4px;
    transition: transform 0.3s ease;
}

.nav-group.open .has-sub::after {
    transform: rotate(180deg);
}

.nav-group .has-sub:hover {
    color: #0071E3;
}

/* 서브메뉴 스타일 개선 */
.submenu {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    min-width: 180px;
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    padding: 8px 0;
    z-index: 2000;
    animation: slideDown 0.3s ease;
}

/* 서브메뉴와 상위 버튼 사이 간격 채우기 */
.submenu::before {
    content: '';
    position: absolute;
    top: -8px;
    left: 0;
    right: 0;
    height: 8px;
    background: transparent;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.nav-group.open .submenu {
    display: block;
}

.submenu a {
    display: block;
    padding: 12px 20px;
    color: #333;
    font-size: 15px;
    white-space: nowrap;
    transition: all 0.2s ease;
}

.submenu a:hover {
    background: #f5f7fb;
    color: #0071E3;
    padding-left: 24px;
}


/* 태블릿 & 모바일 반응형 개선 */


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


.animate-on-scroll {
    opacity: 1;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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



.footer {
   
    
    flex-shrink: 0;
    background: #F5F5F7;
    padding-left: 15%;

    padding-right: 15%;
}

.FOOTER-LOGO {
    width: 9.0625rem;
    height: 1.68006rem;
    flex-shrink: 0;
    margin-top: 1.37rem;
}

.FOOTER-HR {
    background: #CECECF;
    height: 0.0625rem;
    margin-top: 1.13rem;
}

.footer-copyright {
    color: #6C6C6C;
    font-family: "Noto Sans KR";
    font-size: 0.75rem;
    font-style: normal;
    font-weight: 400;
    line-height: 0.625rem;
    /* 83.333% */
    margin-top: 1.25rem;
}

.footer-address {
    color: #999;
    font-family: "Noto Sans KR";
    font-size: 0.6875rem;
    font-style: normal;
    font-weight: 400;
    line-height: 0.9375rem;
    /* 136.364% */
    letter-spacing: -0.0275rem;
    margin-top: 1.37rem;

}

.footer-email {
    margin-top: 0.19rem;
    color: #999;
    font-family: "Noto Sans KR";
    font-size: 0.6875rem;
    font-style: normal;
    font-weight: 400;
    line-height: 0.9375rem;
    /* 136.364% */
}


/* Header */
.header {

    height: 70px;
    /* 높이 축소 */

    display: flex;
    justify-content: space-between;
    align-items: center;
    background: white;
    position: fixed;
    width: 80%;
    max-width: 61.25rem;
    padding-left: calc(100% - 30.625rem);
    padding-right: calc(100% - 30.625rem);
    top: 0;
    z-index: 1000;
    left: 50%;
    transform: translateX(-50%);
}

.logo {
    height: 2rem;
    /* 로고 크기 축소 */

}

.nav-menu {
    display: flex;
    gap: 30px;
    /* 메뉴 간격 축소 */
}

.nav-item {
    color: #1E1E1E;
    font-size: 16px;
    /* 폰트 크기 축소 */
    font-weight: 500;
    text-decoration: none;
}

.nav-item.active {
    color: #008AFC;
}

.language-dropdown {
    position: relative;
    display: inline-block;
    display: none;
}

.dropdown-btn {
    padding: 8px 12px;
    background: white;
    border: 1px solid #ddd;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
}

.dropdown-btn img {
    width: 20px;
    height: 15px;
}

.dropdown-arrow {
    font-size: 12px;
}

.dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    background: white;
    min-width: 120px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    border-radius: 4px;
    z-index: 1000;
}

.dropdown-content a {
    padding: 8px 12px;
    text-decoration: none;
    color: black;
    display: flex;
    align-items: center;
    gap: 8px;
}

.dropdown-content a:hover {
    background-color: #f5f5f5;
}

.dropdown-content img {
    width: 20px;
    height: 15px;
}

.language-dropdown:hover .dropdown-content {
    display: block;
    display: i
}


/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
}

.mobile-menu-icon {
    display: flex;
    width: 25px;
    height: 2px;
    background: #1E1E1E;
    position: relative;
    transition: all 0.3s;
}

.mobile-menu-icon::before,
.mobile-menu-icon::after {
    content: '';
    position: absolute;
    width: 25px;
    height: 2px;
    background: #1E1E1E;
    transition: all 0.3s;
}

.mobile-menu-icon::before {
    transform: translateY(-8px);
}

.mobile-menu-icon::after {
    transform: translateY(8px);
}

/* Mobile Menu Open State */
.mobile-menu-btn.open .mobile-menu-icon {
    background: transparent;
}

.mobile-menu-btn.open .mobile-menu-icon::before {
    transform: rotate(45deg);
}

.mobile-menu-btn.open .mobile-menu-icon::after {
    transform: rotate(-45deg);
}

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



    .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(min(200px, 100%), 1fr));
            gap: var(--spacing-md);
            margin-top: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
        }

        .stat-card {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-radius: var(--border-radius-lg);
            padding: var(--spacing-md);
            text-align: center;
            border: 1px solid var(--border-light);
            transition: transform var(--transition-normal);
            will-change: transform;
        }

        .stat-card:hover {
            transform: translateY(-5px);
        }

        .stat-number {
            font-size: clamp(2rem, 4vw, 2.5rem);
            font-weight: 700;
            color: #FFFCE2;
            display: block;
            margin-bottom: 0.5rem;
        }

        .stat-label {
            color: rgba(255, 255, 255, 0.8);
            font-size: var(--font-size-sm);
            line-height: 1.4;
        }

        .data-source {
            text-align: center;
            font-size: var(--font-size-xs);
            color: rgba(255, 255, 255, 0.7);
            font-style: italic;
            margin-bottom: var(--spacing-lg);
        }

        /* URL 체험 섹션 스타일 */
        .url-experience-section {
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(15px);
            -webkit-backdrop-filter: blur(15px);
            border-radius: var(--border-radius-lg);
            padding: var(--spacing-lg);
            margin-top: var(--spacing-md);
            border: 1px solid var(--border-light);
            position: relative;
            z-index: 2;
        }

        .experience-header {
            text-align: center;
            margin-bottom: var(--spacing-md);
        }

        .experience-title {
            font-size: var(--font-size-2xl);
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: var(--spacing-sm);
            line-height: 1.3;
        }

        .experience-description {
            font-size: var(--font-size-base);
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.6;
            max-width: 600px;
            margin: 0 auto var(--spacing-md);
        }

        .url-checker-demo {
            background: rgba(255, 255, 255, 0.95);
            border-radius: var(--border-radius-md);
            padding: var(--spacing-md);
            margin-bottom: var(--spacing-md);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }

        .demo-input-group {
            display: flex;
            gap: var(--spacing-sm);
            margin-bottom: var(--spacing-sm);
            align-items: stretch;
        }

        .demo-input {
            flex: 1;
            padding: var(--spacing-sm);
            border: 2px solid #e2e8f0;
            border-radius: var(--border-radius-sm);
            font-size: var(--font-size-base);
            color: var(--text-primary);
            background: white;
            transition: border-color var(--transition-normal);
        }

        .demo-input:focus {
            outline: none;
            border-color: var(--primary-blue);
        }

        .demo-check-btn {
            padding: var(--spacing-sm) var(--spacing-md);
            background: var(--primary-blue);
            color: white;
            border: none;
            border-radius: var(--border-radius-sm);
            font-size: var(--font-size-base);
            font-weight: 500;
            cursor: pointer;
            transition: all var(--transition-normal);
            white-space: nowrap;
            font-family: inherit;
        }

        .demo-check-btn:hover {
            background: var(--primary-blue-dark);
            transform: translateY(-1px);
        }

        .demo-result {
            padding: var(--spacing-sm);
            border-radius: var(--border-radius-sm);
            font-size: var(--font-size-sm);
            font-weight: 500;
            text-align: center;
            min-height: 2.5rem;
            display: flex;
            align-items: center;
            justify-content: center;
            background: #f8fafc;
            color: var(--text-secondary);
            border: 1px solid #e2e8f0;
        }

        .demo-result.safe {
            background: #dcfce7;
            color: #166534;
            border-color: #bbf7d0;
        }

        .demo-result.suspicious {
            background: #fef3c7;
            color: #92400e;
            border-color: #fde68a;
        }

        .demo-result.dangerous {
            background: #fee2e2;
            color: #991b1b;
            border-color: #fca5a5;
        }

        .experience-cta {
            text-align: center;
        }

        .experience-button {
            display: inline-block;
            padding: var(--spacing-sm) 2rem;
            background: linear-gradient(45deg, #FF6B35, #F7931E);
            color: white;
            text-decoration: none;
            border-radius: var(--border-radius-xl);
            font-weight: 600;
            font-size: var(--font-size-base);
            transition: all var(--transition-normal);
            box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
            position: relative;
            overflow: hidden;
        }

        .experience-button::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
            transition: left 0.5s;
        }

        .experience-button:hover::before {
            left: 100%;
        }

        .experience-button:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
        }

        .sample-urls {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: var(--spacing-xs);
            margin-top: var(--spacing-sm);
        }

        .sample-url {
            padding: 0.5rem;
            background: rgba(255, 255, 255, 0.1);
            border-radius: var(--border-radius-sm);
            font-size: var(--font-size-xs);
            color: rgba(255, 255, 255, 0.8);
            cursor: pointer;
            transition: all var(--transition-normal);
            text-align: center;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .sample-url:hover {
            background: rgba(255, 255, 255, 0.15);
            color: rgba(255, 255, 255, 0.95);
            transform: translateY(-2px);
        }


          .hero-section{

   
    padding: 48px 24px;
    padding-bottom: 0px;
    font-family: "Noto Sans KR", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  }

  .container{
    max-width: 1000px;
    margin: 0 auto;
  }

  .hero-grid{
    display: grid;
    grid-template-columns: 1fr 360px; /* left flexible, right fixed for stats like image */
    gap: 32px;
    align-items: start;
  }

  /* LEFT */
  .hero-left { padding-right: 8px; }
  .hero-title{
    font-size: 44px;
    line-height: 1.05;
    margin: 0 0 18px 0;
    font-weight: 700;
    letter-spacing: -0.02em;
  }
  .hero-subtitle{
    font-size: 16px;
    color: var(--muted);
    margin: 0 0 28px 0;
    max-width: 700px;
  }
   .url-input-section {
            margin-top: 48px;
        }
             .url-input-label {
            display: block;
            font-size: 1rem;
            font-weight: 500;
            color: white;
            margin-bottom: 16px;
        }
  .experience-cta{
    display:flex;
    gap:16px;
    align-items:center;
    margin-top: 6px;
    flex-wrap:wrap;
  }

  .demo-check-btn{
    display:inline-block;
    padding: 14px 28px;
    border-radius: 28px;
    background: linear-gradient(90deg, var(--accent), #0b6fe6);
    color: #fff;
    text-decoration:none;
    font-weight:600;
    box-shadow: 0 6px 18px rgba(0,0,0,0.25);
  }
  .demo-check-btn.secondary{
    background: transparent;
    border: 1px solid rgba(255,255,255,0.12);
    color: #dceeff;
    box-shadow: none;
  }

  /* RIGHT (stats) */
  .hero-right{
    display:flex;
    flex-direction:column;
    gap:12px;
    align-items:flex-end;
  }

  .stats-vertical{
    width:100%;
    display:flex;
    flex-direction:column;
    gap:18px;
  }

  .stat-card{
    background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(0,0,0,0.06));
    border-radius: 12px;
    padding: 22px;
    min-height: 100px;
    display:flex;
    flex-direction:column;
    justify-content:center;
    align-items:anchor-center;
    box-shadow: 0 8px 20px rgba(2,8,23,0.35);
  }

  .stat-number{
    font-size:34px;
    font-weight:800;
    display:block;
    line-height:1;
    color: #fff;
  }
  .stat-label{
    font-size:14px;
    color: var(--muted);
    text-align:right;
    margin-top:6px;
    white-space:pre-line;
  }

  .data-source{
    font-size:12px;
    color: rgba(255,255,255,0.65);
    margin-top:6px;
    text-align:right;
  }
   .url-input-group {
            display: flex;
            gap: 12px;
            align-items: stretch;
        }
.url-input:focus {
            outline: none;
            box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.3);
        }

        .url-input::placeholder {
            color: #999;
        }
            .check-btn {
            padding: 18px 36px;
            background: linear-gradient(135deg, #2196F3 0%, #1976D2 100%);
            color: white;
            border: none;
            border-radius: 12px;
            font-size: 1.05rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            white-space: nowrap;
            box-shadow: 0 4px 12px rgba(33, 150, 243, 0.4);
        }

        .check-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(33, 150, 243, 0.5);
        }

        .check-btn:active {
            transform: translateY(0);
        }

        .check-btn:disabled {
            opacity: 0.7;
            cursor: not-allowed;
        }


         * {
            margin: 0;
            padding: 0;
    
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        }

        /* URL 검사 오버레이 스타일 */
        .url-check-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.7);
            z-index: 10000;
            animation: fadeIn 0.3s ease;
        }

        .url-check-overlay.active {
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 20px;
        }

        .overlay-content {
            background: linear-gradient(135deg, #667eea 0%, #5874f0 100%);
            border-radius: 20px;
            max-width: 900px;
            width: 100%;
            max-height: 90vh;
            overflow-y: auto;
            padding: 20px;
            position: relative;
            animation: slideUp 0.4s ease;
        }

        .close-overlay {
            position: absolute;
            top: 20px;
            right: 20px;
            background: white;
            border: none;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            cursor: pointer;
            font-size: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 10;
            transition: transform 0.2s ease;
        }

        .close-overlay:hover {
            transform: rotate(90deg);
        }

        .input-card {
            background: white;
            border-radius: 20px;
            padding: 40px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
            text-align: center;
            margin-bottom: 30px;
        }

        .logo h1 {
            color: #333;
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .logo p {
            color: #666;
            font-size: 14px;
        }

        .input-group {
            margin-bottom: 20px;
            text-align: left;
        }

        label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: #333;
            font-size: 14px;
        }

        input[type="text"] {
            width: 95%;
            padding: 15px;
            border: 2px solid #e1e5e9;
            border-radius: 10px;
            font-size: 16px;
            transition: border-color 0.3s ease;
        }

        input[type="text"]:focus {
            outline: none;
            border-color: #667eea;
        }

        .btn-primary {
            background: linear-gradient(135deg, #667eea 0%, #3151e2 100%);
            color: white;
            border: none;
            padding: 15px 40px;
            border-radius: 10px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: transform 0.2s ease, box-shadow 0.2s ease;
            width: 100%;
        }

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

        .btn-primary:disabled {
            opacity: 0.7;
            cursor: not-allowed;
        }

        .loading {
            display: none;
            margin-top: 20px;
        }

        .spinner {
            width: 40px;
            height: 40px;
            border: 4px solid #f3f3f3;
            border-top: 4px solid #667eea;
            border-radius: 50%;
            animation: spin 1s linear infinite;
            margin: 0 auto 15px;
        }

        .result-card {
            display: none;
            background: white;
            border-radius: 20px;
            padding: 30px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
            animation: slideIn 0.5s ease;
        }

        .result-url {
            background: #f8f9fa;
            padding: 15px;
            border-radius: 8px;
            word-break: break-all;
          
            font-size: 14px;
            color: #666;
            margin-bottom: 20px;
        }

        .result-content {
            background: #f8f9fa;
            border-radius: 10px;
            padding: 20px;
            max-height: 400px;
            overflow-y: auto;
            border: 1px solid #e9ecef;
            display: flex;
            justify-content: center;
            align-items: flex-start;
        }

        .result-content iframe {
            width: 100%;
            height: 400px;
            border: none;
            border-radius: 8px;
        }
    .url-input-label {
            display: block;
            font-size: 0.95rem;
            font-weight: 600;
            color: white;
            margin-bottom: 12px;
        }

        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }

        @keyframes slideUp {
            from {
                opacity: 0;
                transform: translateY(50px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

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

/* 반응형 최적화 */
@media (max-width: 1200px) {
    .container {
 
    width: 95%;
}
    :root {
        --container-padding: 1.5rem;
    }
    
    .solution-hero {
        gap: var(--spacing-md);
    }
}

@media (max-width: 1024px) {
    :root {
        --spacing-xl: 6rem;
    }
   
    
    .solution-hero {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-lg);
    }
          .url-input {
                font-size: 0.95rem;
            }
                 .check-btn {
                width: 100%;
            }

    .threat-slide {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-md);
        padding: var(--spacing-md);
    }

    .threat-image {
        order: -1;
        
    }
}

 @media (max-width: 880px){
    .hero-grid{
      grid-template-columns: 1fr;
    }
    .hero-right{
      align-items:stretch;
      margin-top:18px;
    }
    .stat-card{
      align-items:flex-start;
    }
    .stat-number{ font-size:28px; }
    .experience-cta{
      justify-content:flex-start;
    }
  }



@media (max-width: 825px) {
        .mobile-menu-btn {
        display: block;
        z-index: 1001;
    }
         .url-input-group {
                flex-direction: column;
            }
    .nav-menu {
        width: 100%;
        right: 0;
    }
    :root {
        --container-padding: 1rem;
        --spacing-xl: 4rem;
        --spacing-lg: 3rem;
    }
    
    .hero-section {
        min-height: 60vh;
        padding: 3rem 0;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin-left: auto;
        margin-right: auto;
    }

    .threat-slide {
        padding: 1.5rem;
    }

    .slider-nav {
        flex-direction: column;
        align-items: center;
        gap: 0.5rem;
    }


    .simulation-steps {
        grid-template-columns: 1fr;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-sm);
    }

    .cta-button {
        width: 90%;
        max-width: 280px;
        text-align: center;
    }

    .solution-visual {
        padding: var(--spacing-md);
    }

    .bot-techniques-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .technique-card {
        padding: var(--spacing-md) 1.5rem;
    }

    .conclusion-box {
        padding: 1.5rem;
        margin-top: var(--spacing-md);
    }

    .conclusion-box p {
        font-size: var(--font-size-base);
    }

    .closing-message {
        padding: 1.5rem;
        margin-top: var(--spacing-md);
    }
    
    .header {
        width: 95%;
        padding: 0 2.5%;
    }

    .nav-menu {
        display: none;  
                padding: 80px 20px 20px;
        /* Hide desktop nav on mobile */
        flex-direction: column;
        position: absolute;
       top: 0;
        right: 0;
        width: 100px;
        height: 100vh;
        z-index: 1000;
        background-color: white;
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    }

    .nav-menu.open {
        display: flex;
    }

    .nav-item {
        padding: 10px p;
        border-bottom: 1px solid #eee;
        text-align: left;
    }

 .hero-section {
                min-height: 70vh;
                padding: 3rem 0;
            }
            
            .stats-grid {
                grid-template-columns: 1fr;
                max-width: 400px;
                margin-left: auto;
                margin-right: auto;
            }

            .url-experience-section {
                padding: var(--spacing-md);
            }

            .demo-input-group {
                flex-direction: column;
            }

            .demo-check-btn {
                padding: var(--spacing-sm);
                text-align: center;
            }

            .sample-urls {
                grid-template-columns: 1fr;
            }

            .experience-button {
                width: 100%;
                max-width: 280px;
            }

           .colum-0 {
        grid-column: 1 / 3; 
    }
    .colum-1{
        width: 100%;
        grid-column: 1 ; 
    }
    .colum-2{
  width: 100%;
        grid-column: 2 ; 
    }


.comparison-table .table-header,
    .comparison-table .table-row {
         grid-template-columns: 1fr 1fr;
        gap: 0.5rem;
        text-align: center;
        padding: var(--spacing-sm);
    }
     

 .comparison-table .table-header > div:first-child,
    .comparison-table .table-row > div:first-child {
        font-weight: 700;
        border-bottom: 1px solid var(--border-color);
        padding-bottom: 0.5rem;
        margin-bottom: 0.5rem;
    }

    .url-check-overlay.active{
        padding: 0px;
    }
      .overlay-content{
         padding: 5px;
      }
      .input-card{
margin-bottom: 5px;
      }
      .result-card{
        padding: 5px;
      }
      .logo h1{
        font-size:20px;
      }



       .mobile-menu-btn {
        display: block;
    }

    .nav-menu {
        display: none;
        flex-direction: column;
        position: fixed;
        top: 70px;
        right: 0;
        width: 280px;
        height: calc(100vh - 70px);
        background: white;
        box-shadow: -4px 0 12px rgba(0, 0, 0, 0.1);
        padding: 20px;
        gap: 0;
        overflow-y: auto;
    }

    .nav-menu.open {
        display: flex;
    }

    .nav-item {
        width: 100%;
        padding: 15px 20px;
        border-bottom: 1px solid #f0f0f0;
    }

    .nav-group {
        width: 100%;
    }

    /* 모바일에서는 상위 메뉴 숨기기 */
  

    /* 모바일에서는 서브메뉴 항상 표시 */
    .submenu {
        display: block !important;
        position: static;
        box-shadow: none;
        border: none;
        border-radius: 0;
        padding: 0;
        background: transparent;
        margin-top: 0;
        animation: none;
    }
    
    .submenu::before {
        display: none;
    }

    .submenu a {
        padding: 15px 20px;
        border-bottom: 1px solid #f0f0f0;
    }

    .submenu a:hover {
        padding-left: 24px;
        background: #f8f9fa;
        
    }
    .submenu a:last-child { border-bottom: none; }
}

@media (max-width: 480px) {
    :root {
        --container-padding: 0.75rem;
    }
    
    .hero-title {
        font-size: 1.75rem;
        line-height: 1.1;
    }
    
    .hero-subtitle {
        font-size: var(--font-size-base);
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .nav-btn {
        font-size: var(--font-size-xs);
        padding: 0.5rem 0.8rem;
    }
    
    .stat-number {
        font-size: 1.8rem;
    }
    
    .threat-slide-title {
        font-size: var(--font-size-xl);
    }
            .hero-title {
                font-size: 1.75rem;
                line-height: 1.1;
            }
            
            .hero-subtitle {
                font-size: var(--font-size-base);
                margin-bottom: 2rem;
            }
            
            .stat-number {
                font-size: 1.8rem;
            }

            .experience-title {
                font-size: var(--font-size-xl);
            }

            .url-experience-section {
                padding: 1.5rem;
            }
            .hero-title{ font-size:28px; }
    .demo-check-btn{ width:100%; text-align:center; }
    .experience-cta{ flex-direction:column; gap:10px; }
}

/* 프린트 미디어 쿼리 */
@media print {
    .hero-section {
        background: none !important;
        color: var(--text-primary) !important;
    }
    
    .section-dark {
        background: none !important;
        color: var(--text-primary) !important;
    }
    
    .nav-btn,
    .cta-button,
    .slider-indicators {
        display: none;
    }
}


        /* 반응형 최적화 */