body {
    margin: 0;
    font-family: 'Pretendard', 'Noto Sans KR', sans-serif;
}

/* 상단 HERO 영역 */
.security-hero {
    background: #e8f5ee;
    padding: 5rem 2rem 3rem;
    text-align: center;
    color: #2d5e42;
}

.security-hero h1 {
    font-size: 2.3rem;
    margin-bottom: 0.3rem;
}

.security-hero p {
    opacity: 0.8;
}

/* 본문 컨테이너 */
.security-container {
    display: flex;
    justify-content: center;
    padding: 3rem 1.5rem 5rem;
}

/* 본문 박스 */
.security-box {
    width: 100%;
    max-width: 900px;
    background: #ffffff;
    padding: 2.5rem 2.8rem;
    border-radius: 1rem;
    border: 1px solid #dfe8e2;
    line-height: 1.7;
    color: #333;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}

.security-box h2 {
    margin-top: 2.2rem;
    margin-bottom: 1rem;
    border-left: 4px solid #4fa46b;
    padding-left: 0.7rem;
    color: #2e5c3a;
    font-size: 1.35rem;
}

.security-box ul {
    margin: 0 0 1.3rem 1rem;
    padding-left: 1rem;
}

.security-box li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

@media(max-width: 650px) {
    .security-box {
        padding: 1.8rem 1.4rem;
    }
    .security-hero h1 {
        font-size: 2rem;
    }
}