/* --- Global Reset & Font --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans KR', sans-serif;
    background-color: #121212; /* 다크모드 배경 */
    color: #E0E0E0; /* 기본 텍스트 색상 */
    line-height: 1.7;
    overflow-x: hidden;
}

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

a {
    color: #4A90E2; /* 링크 색상 */
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #FFFFFF;
}

h1, h2, h3 {
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: -0.5px;
}

h1 {
    font-size: 3.5rem; /* 56px */
    color: #FFFFFF;
}

h2 {
    font-size: 2.5rem; /* 40px */
    color: #FFFFFF;
    text-align: center;
    margin-bottom: 40px;
}

p {
    font-size: 1.1rem;
    font-weight: 300;
    margin-bottom: 20px;
}

section {
    padding: 80px 0;
}

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

/* --- Buttons --- */
.btn {
    display: inline-block;
    padding: 12px 28px;
    font-size: 1rem;
    font-weight: 700;
    border-radius: 30px;
    transition: all 0.3s ease;
    text-decoration: none;
    border: 2px solid transparent;
}

.btn-primary {
    background-color: #E0B816; /* 메인 CTA 색상 (경고/주의) */
    color: #121212;
    border-color: #E0B816;
}

.btn-primary:hover {
    background-color: #FFD700;
    border-color: #FFD700;
    color: #121212;
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    color: #FFFFFF;
    border-color: #555;
}

.btn-secondary:hover {
    background-color: #FFFFFF;
    color: #121212;
    border-color: #FFFFFF;
}


/* --- 1. Header --- */
.header {
    background-color: rgba(18, 18, 18, 0.8); /* 반투명 배경 */
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #333;
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo a {
    font-size: 1.5rem;
    font-weight: 900;
    color: #FFFFFF;
    letter-spacing: -1px;
}

.logo-cursor {
    color: #E0B816;
    font-weight: 900;
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    from, to { opacity: 1; }
    50% { opacity: 0; }
}

.nav ul {
    list-style: none;
    display: flex;
    align-items: center;
}

.nav li {
    margin-left: 30px;
}

.nav a {
    color: #E0E0E0;
    font-weight: 500;
}

.nav a:hover {
    color: #E0B816;
}

.nav-button {
    background-color: #E0B816;
    color: #121212;
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 700;
}

.nav-button:hover {
    background-color: #FFD700;
    color: #121212;
}

/* --- 2. Hero Section --- */
.hero {
    padding: 120px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
    background: radial-gradient(circle, #2a2a2a 0%, #121212 70%);
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero .subtitle {
    font-size: 1.4rem;
    font-weight: 300;
    color: #B0B0B0;
    max-width: 800px;
    margin: 20px auto 40px;
}

.hero-buttons .btn {
    margin: 0 10px;
}

.hero-visual {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(rgba(18, 18, 18, 0) 50%, #121212 100%),
        linear-gradient(90deg, rgba(224, 184, 22, 0.1) 1px, transparent 1px),
        linear-gradient(rgba(224, 184, 22, 0.1) 1px, transparent 1px);
    background-size: 40px 40px, 40px 40px;
    opacity: 0.3;
    z-index: 1;
}

/* --- 3. Problem Section --- */
.problem-section {
    border-bottom: 1px solid #333;
    padding-bottom: 80px;
}

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

.problem-card {
    background-color: #1E1E1E;
    padding: 30px;
    border-radius: 8px;
    border: 1px solid #333;
}

.problem-card h3 {
    font-size: 1.5rem;
    color: #FFFFFF;
    margin-bottom: 15px;
}

.problem-card p {
    font-size: 1rem;
    color: #B0B0B0;
    margin-bottom: 0;
}

.icon-placeholder {
    font-size: 0.9rem;
    color: #E0B816;
    margin-bottom: 15px;
    font-weight: 700;
}

/* --- 4. Aegis Benchmark Section (Solution) --- */
.aegis-section {
    background-color: #181818;
    border-top: 1px solid #333;
    border-bottom: 1px solid #333;
}

.section-tag {
    display: block;
    text-align: center;
    font-size: 1rem;
    font-weight: 700;
    color: #E0B816;
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.section-description {
    text-align: center;
    font-size: 1.2rem;
    color: #B0B0B0;
    max-width: 800px;
    margin: -20px auto 50px;
}

.aegis-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
}

.aegis-card {
    background-color: #222;
    padding: 30px;
    border-radius: 8px;
    border-left: 4px solid #4A90E2; /* 기본 강조색 */
    transition: all 0.3s ease;
}

.aegis-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

.aegis-card .card-header {
    display: flex;
    align-items: baseline;
    gap: 10px;
    margin-bottom: 15px;
}

.aegis-card h3 {
    font-size: 1.4rem;
    color: #FFFFFF;
    margin-bottom: 0;
}

.aegis-card span {
    font-size: 1rem;
    color: #999;
    font-weight: 400;
}

.aegis-card p {
    font-size: 1rem;
    color: #B0B0B0;
    margin-bottom: 0;
}

/* 특별히 중요한 'Janus Score' 강조 */
.aegis-card.emphasis {
    background-color: #2a2a2a;
    border-left-color: #E0B816; /* 위험성 강조색 */
}

.aegis-card.emphasis h3 {
    color: #E0B816;
}

/* --- 5. Visualization Section --- */
.visual-section {
    text-align: center;
}

.radar-chart-placeholder {
    max-width: 800px;
    margin: 40px auto 0;
    padding: 30px;
    background-color: #1E1E1E;
    border-radius: 8px;
    border: 1px solid #333;
}

.radar-chart-placeholder img {
    max-width: 100%;
    height: auto;
}

.chart-caption {
    font-size: 1rem;
    color: #B0B0B0;
    margin-top: 20px;
    line-height: 1.6;
}

/* --- 6. Reports Section --- */
.reports-section {
    background-color: #121212;
    border-top: 1px solid #333;
}

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

.report-card {
    display: block;
    background-color: #1E1E1E;
    border: 1px solid #333;
    border-radius: 8px;
    padding: 30px;
    transition: all 0.3s ease;
    color: #E0E0E0;
}

.report-card:hover {
    border-color: #E0B816;
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(224, 184, 22, 0.1);
}

.report-tag {
    display: inline-block;
    background-color: rgba(224, 184, 22, 0.2);
    color: #E0B816;
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 700;
    margin-bottom: 15px;
}

.report-card h3 {
    font-size: 1.3rem;
    color: #FFFFFF;
    margin-bottom: 10px;
}

.report-card p {
    font-size: 1rem;
    color: #B0B0B0;
    margin-bottom: 20px;
}

.report-date {
    font-size: 0.9rem;
    color: #777;
    font-weight: 500;
}

/* --- 7. Mission Section (CTA) --- */
.mission-section {
    background-color: #1E1E1E;
    text-align: center;
}

.mission-section h2 {
    font-size: 2.2rem;
}

.mission-section p {
    font-size: 1.2rem;
    color: #B0B0B0;
    max-width: 800px;
    margin: 0 auto 40px;
    line-height: 1.8;
}

/* --- 8. Footer --- */
.footer {
    background-color: #121212;
    border-top: 1px solid #333;
    padding: 50px 0;
    text-align: center;
}

.footer-logo {
    font-size: 1.3rem;
    font-weight: 900;
    color: #777;
    margin-bottom: 20px;
}

.footer-links {
    margin-bottom: 20px;
}

.footer-links a {
    color: #999;
    margin: 0 15px;
    font-size: 0.9rem;
    font-weight: 400;
}

.footer-links a:hover {
    color: #FFFFFF;
}

.copyright {
    font-size: 0.9rem;
    color: #555;
}

/* --- 반응형 디자인 --- */
@media (max-width: 992px) {
    h1 { font-size: 3rem; }
    h2 { font-size: 2.2rem; }

    .problem-grid,
    .report-grid {
        grid-template-columns: 1fr;
    }
    
    .aegis-grid {
        grid-template-columns: 1fr;
    }

    .nav { display: none; } /* 모바일에서는 햄버거 메뉴로 대체 필요 */
}

@media (max-width: 768px) {
    .hero { padding: 80px 0; }
    h1 { font-size: 2.5rem; }
    .hero .subtitle { font-size: 1.2rem; }
    
    .hero-buttons {
        display: flex;
        flex-direction: column;
        gap: 15px;
        align-items: center;
    }

    .problem-grid,
    .report-grid {
        gap: 20px;
    }
}