/* 히어로 섹션 */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 100px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.1);
    z-index: 1;
}

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

.hero h1 {
    font-size: 3.5em;
    margin-bottom: 20px;
    font-weight: 300;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.hero p {
    font-size: 1.3em;
    margin-bottom: 30px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.95;
}

/* CTA 버튼 */
.cta-button {
    background: #ff6b6b;
    color: white;
    padding: 18px 36px;
    border: none;
    border-radius: 50px;
    font-size: 1.2em;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 8px 25px rgba(255, 107, 107, 0.3);
    font-family: 'Noto Sans KR', sans-serif;
    font-weight: 500;
}

.cta-button:hover {
    background: #ff5252;
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(255, 107, 107, 0.4);
}

/* 통계 섹션 */
.stats {
    background: #f8f9fa;
    padding: 80px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    text-align: center;
}

.stat-item {
    padding: 30px;
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    transition: transform 0.3s;
}

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

.stat-item h3 {
    font-size: 3em;
    color: #667eea;
    margin-bottom: 15px;
    font-weight: 700;
    background: linear-gradient(45deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-item p {
    font-size: 1.1em;
    color: #666;
    font-weight: 500;
}

/* 전문성 섹션 */
.expertise {
    padding: 100px 0;
    background: white;
}

.expert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 50px;
}

.expert-card {
    background: white;
    padding: 40px 30px;
    border-radius: 15px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    text-align: center;
    transition: all 0.3s;
    border-top: 4px solid transparent;
}

.expert-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
    border-top-color: #667eea;
}

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

.expert-card h4 {
    color: #333;
    margin-bottom: 20px;
    font-size: 1.4em;
    font-weight: 600;
}

.expert-card p {
    color: #666;
    font-size: 1.05em;
    line-height: 1.7;
}

/* 연구 섹션 */
.research {
    background: #f8f9fa;
    padding: 100px 0;
}

.research-list {
    max-width: 800px;
    margin: 0 auto;
}

.research-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 40px;
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    transition: transform 0.3s;
}

.research-item:hover {
    transform: translateX(10px);
}

.research-icon {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    width: 70px;
    height: 70px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: