body {
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    color: #333;
    margin: 0;
    padding: 0;
    background: #fff;
    line-height: 1.6;
}
.container {
    max-width: 800px;
    margin: 50px auto;
    padding: 0 20px;
    text-align: left;
    min-height: 100vh;
}
.header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 10px;
}
.header img {
    width: 200px;
    height: auto;
}
.title {
    font-size: 32px;
    font-weight: bold;
    letter-spacing: 4px;
    color: #555;
    margin: 0;
}

.section-title {
    font-size: 20px;
    color: #777;
    display: inline-block;
    margin-bottom: 30px;
    padding-bottom: 5px;
    letter-spacing: 3px;
}

.underlined {
    border-bottom: 2px solid #777;
    padding-bottom: 5px;
}
.description {
    text-align: left;
    max-width: 700px;
    font-size: 14px;
    margin-top: 50px;
}
.description p {
    margin: 5px 0;
}
.description strong {
    font-weight: bold;
    letter-spacing: 1px;
}
.menu-icon {
    position: absolute;
    top: 30px;
    right: 30px;
    cursor: pointer;
}
.menu-icon div {
    width: 40px;
    height: 3px;
    background-color: #ccc;
    margin: 5px 0;
}
.side-menu {
    position: fixed;
    top: 0;
    right: -300px;
    width: 300px;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.2);
    color: #fff;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: right 0.3s ease;
    padding: 60px 20px 20px;
    box-sizing: border-box;
    z-index: 1000;
}
.side-menu nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.side-menu nav ul li {
    margin: 20px 0;
}
.side-menu nav ul li a {
    color: #fff;
    text-decoration: none;
    font-size: 20px;
    letter-spacing: 2px;
    text-align: center;
    display: block;
}
.side-menu .footer {
    font-size: 12px;
    text-align: center;
}
.side-menu.open {
    right: 0;
}
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease;
    z-index: 500;
}
.overlay.active {
    opacity: 1;
    visibility: visible;
}

/* 모바일 최적화 */
@media (max-width: 768px) {
    .container {
        margin: 20px auto;
        padding: 0 15px;
    }

    .header {
        flex-direction: column;
        gap: 10px;
        margin-bottom: 20px;
    }

    .header img {
        width: 150px;
    }

    .title {
        font-size: 24px;
        letter-spacing: 2px;
    }

    .section-title {
        font-size: 16px;
        letter-spacing: 2px;
        margin-bottom: 20px;
    }

    .description {
        font-size: 13px;
        margin-top: 30px;
    }

    .menu-icon {
        top: 20px;
        right: 20px;
    }

    .menu-icon div {
        width: 35px;
        height: 2px;
    }

    .side-menu {
        width: 250px;
        right: -250px;
        padding: 50px 15px 15px;
    }

    .side-menu nav ul li a {
        font-size: 18px;
        letter-spacing: 1px;
    }

    .side-menu .footer {
        font-size: 11px;
    }
}

@media (max-width: 480px) {
    .container {
        margin: 15px auto;
        padding: 0 10px;
    }

    .header img {
        width: 120px;
    }

    .title {
        font-size: 20px;
        letter-spacing: 1px;
    }

    .section-title {
        font-size: 14px;
        letter-spacing: 1px;
    }

    .description {
        font-size: 12px;
        margin-top: 20px;
    }

    .description p {
        margin: 3px 0;
    }

    .menu-icon {
        top: 15px;
        right: 15px;
    }

    .menu-icon div {
        width: 30px;
        height: 2px;
        margin: 4px 0;
    }

    .side-menu {
        width: 200px;
        right: -200px;
        padding: 40px 10px 10px;
    }

    .side-menu nav ul li {
        margin: 15px 0;
    }

    .side-menu nav ul li a {
        font-size: 16px;
    }
}
footer {
    font-size: 15px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    background-color: #212426;
    color: rgba(248, 249, 250, 0.3);
}

.logo-container {
    display: flex;
    align-items: center;
    flex: 1;
    justify-content: flex-start;
}

.logo-container .logo img {
    height: 100px;
}

.company-info {
    text-align: right;
    flex: 1;
}

.company-info p {
    margin: 5px 0;
    font-size: 11px;
}

.footer-right {
    text-align: right;
    flex: 1;
}

.footer-right p {
    margin: 5px 0;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-top: 10px;
    width: 100%;
    justify-content: flex-end;
}

.footer-links a {
    color: #fff;
    text-decoration: none;
}

.footer-links a:hover {
    text-decoration: underline;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 15px;
    justify-content: center;
}

.social-icon {
    width: 24px;
    height: 24px;
    opacity: 0.7;
    transition: opacity 0.3s ease;
}

.social-icon:hover {
    opacity: 1;
}

@media (max-width: 768px) {
    footer {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .logo-container {
        margin-bottom: 10px;
    }

    .company-info {
        text-align: center;
        margin-bottom: 10px;
    }

    .footer-links {
        justify-content: center;
    }

    .footer-right {
        text-align: center;
    }
    
    .social-links {
        margin-top: 10px;
    }
}
.line-horizontal {
    width: 100%;
    height: 1px;
    background-color: #333; 
}