@charset "utf-8";

:root {
    --main-color: #1359B6;
}

* {
    margin: 0;
    padding: 0;
}

a {
    text-decoration: none;
    color: #01011A;
}

ul,
ol {
    list-style: none;
    color: #01011A;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'pretendard';
    line-height: 1.5;
    font-size: 62.5%;
    box-sizing: border-box;
    color: #01011A;
}

#wrap {
    max-width: 1920px;
    margin: 0 auto;
}

.inner {
    max-width: 1440px;
    margin: 0 auto;
}

h1 {
    font-size: 50px;
    font-weight: 600;
    text-align: center;
}

h2 {
    font-size: 40px;
    font-weight: 600;
    text-align: center;
}

h3 {
    font-size: 30px;
    font-weight: 600;
    text-align: center;
}

h4 {
    font-size: 20px;
    font-weight: 100;
    text-align: center;
}

/* header */
header {
    width: 100%;
}

.scroll-menu {
    z-index: 99;
    position: absolute;
    width: 100%;
    margin: auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 30px 200px;
    box-sizing: border-box;
}

.gnb {
    display: flex;
    justify-content: end;
    gap: 50px;
}

.gnb li a {
    position: relative;
    text-decoration: none;
    padding: 5px 10px;
    display: inline-block;
}

.gnb li a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 2px;
    width: 100%;
    height: 60%;
    background-color: var(--main-color);
    z-index: -1;
    transition: all 0.3s ease;
    transform: scaleX(0);
    transform-origin: left;
}

.gnb li a:hover::after {
    transform: scaleX(1);
}

.nav a {
    font-size: 20px;
    color: #fff;
}

.scroll-fixed {
    background-color: #01011A;
    position: fixed;
    top: 0px;
    left: 0;
    padding: 30px 200px;
    transition: all 1s;
    box-sizing: border-box;
}

.scroll-fixed .nav a {
    color: #fff;
    transition: all 0.3s;
}


/* 모바일 햄버거 버튼 */
.mgnb-wrap {
    display: none;
}

.menu-trigger span {
    display: inline-block;
    transition: all .4s;
}

.menu-trigger {
    display: none;
    position: fixed;
    top: 30px;
    right: 30px;
    width: 50px;
    height: 44px;
    z-index: 10001;
}

.menu-trigger span {
    position: absolute;
    left: 0;
    width: 100%;
    height: 5px;
    background-color: #fff;
    border-radius: 10px;
    transition: transform 0.4s ease, opacity 0.4s ease;
}
.menu-trigger.active span {
    background-color: #01011A; 
  }
.menu-trigger span:nth-of-type(1) {
    top: 0;
}

.menu-trigger span:nth-of-type(2) {
    top: 20px;
}

.menu-trigger span:nth-of-type(3) {
    bottom: 0;
}

.menu-trigger.active span:nth-of-type(1) {
    -webkit-transform: translateY(20px) rotate(-45deg);
    transform: translateY(20px) rotate(-45deg);
}

.menu-trigger.active span:nth-of-type(2) {
    opacity: 0;
}

.menu-trigger.active span:nth-of-type(3) {
    -webkit-transform: translateY(-20px) rotate(45deg);
    transform: translateY(-20px) rotate(45deg);
}

.mobile-nav {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: #fff;
    z-index: 9999;
    padding-top: 100px;
    text-align: center;
    text-align: left;
    padding: 30px 50px;
    font-size: 30px;
    font-weight: 600;
  }
  .mobile-nav.active {
    display: block;
  }
  .mobile-nav ul {
    list-style: none;
    padding: 0;
  }
  
  .mobile-nav ul li {
    margin: 20px 0;
  }
  
  .mobile-nav ul li a {
    font-size: 24px;
    color: #000;
    text-decoration: none;
  }

#company,
#history,
#overview,
#contact {
  scroll-margin-top: 140px; /* 헤더 높이에 따라 조정 */
}

/* banner_section */
.main-banner {
    background: url(../img/main_banner.png) no-repeat 50% 0%;
    width: 100%;
    padding: 200px;
    color: #fff;
    display: flex;
    flex-direction: column;
}

.main_banner h1 {
    margin-bottom: 40px;
}

.main-banner h1 img {
    vertical-align: middle;
    height: 35px;
}

.key-features {
    position: relative;
    margin-top: -80px;
    padding-bottom: 200px;
}

.key-features ul {
    position: absolute;
    left: 50%;
    transform: translate(-50%);
    display: flex;
    justify-content: space-between;
    flex-wrap: nowrap;
    width: 100%;
    overflow-x: auto;
    margin: 2rem auto;
    max-width: 1200px;
}

.key-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 25%;
    padding: 20px;
    border: 1px solid #e0e0e0;
    background-color: #fff;
    text-align: center;
    font-weight: bold;
    font-size: 20px;
}

.key-icon {
    width: 50px;
    height: 50px;
    background-color: #E4E4E4;
    border-radius: 6px;
    margin-bottom: 12px;
}

.key-item01 .key-icon{
    background: url(../img/key-icon01.png) no-repeat 50% 50% ;
}
.key-item02 .key-icon{
    background: url(../img/key-icon02.png) no-repeat 50% 50%;
}
.key-item03 .key-icon{
    background: url(../img/key-icon03.png) no-repeat 50% 50%;
}
.key-item04 .key-icon{
    background: url(../img/key-icon04.png) no-repeat 50% 50%;
}

/* company section */
.company {
    max-width: 1200px;
    margin: auto;
}

.com-ceo {
    display: flex;
    justify-content: space-between;
    gap: 80px;
    font-size: 16px;
    color: #888;
    padding: 80px 20px;
}
.com-ceo img{
    width: 350px;
}
.com-ceo-txt {
    padding: 20px 0;
}

.com-ceo b {
    font-size: 20px;
    color: #01011A;
    font-weight: 600;
}

/* history section */
.history_mo{
    display: none;
}

.history {
    text-align: center;
    padding: 40px 20px;
}

.history h2 {
    margin: 40px 0 50px;
}

.history img {
    width: 90%;
    padding: 40px;
    margin: auto;
}

/* overview */
.overview {
    max-width: 1200px;
    margin: auto;
    padding: 80px 20px 20px;
}


.overview h3 {
    position: relative;
    margin-bottom: clamp(40px, 5vw, 50px);
    /* clamp  paddimg 없이 여백 주기용 */
    margin-top: 20px;
}

.highlight {
    width: 400px;
    height: 20px;
    position: absolute;
    top: 20px;
    left: 50%;
    margin-left: -200px;
    z-index: -1;
    background: linear-gradient(to right, #B8CDE9 50%, transparent 50%) 100% 0;
    transition: all 1s;
    background-size: 200%;
}

.highlight2 {
    width: 500px;
    margin-left: -250px;
}

.on {
    background-position-x: 0;
}

.technologies-item {
    color: #fff;
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 80px;
}

.technologies-item li {
    width: 100%;
    padding: 80px;
    background-size: cover;
    border-radius: 20px;
    align-items: center;
}

.technologies-item li span {
    display: inline-block;
    vertical-align: middle;
    line-height: 1;
}

.technologies-item li span::after {
    content: "";
    display: inline-block;
    width: 17px;
    height: 17px;
    background-color: var(--main-color);
    border-radius: 50px;
    vertical-align: middle;
}

.technologies-item01 {
    background: url(../img/overview01.png) no-repeat center;
}

.technologies-item02 {
    background: url(../img/overviwe02.png) no-repeat center;
}

.technologies-item03 {
    background: url(../img/overviwe03.png) no-repeat center;
}

.technologies-item04 {
    background: url(../img/overviwe04.png) no-repeat center;
}

.technologies-item b {
    font-size: 30px;
    font-weight: 600;
    vertical-align: middle;
}

.technologies-item p {
    font-size: 20px;
    font-weight: 100;
}

.technologies-item p {
    width: 50%;
}

/* overview 인증서 */
.swiper-width {
    padding: 40px 0;
    max-width: 1920px;
    overflow: visible;
}

.swiper-width h3 {
    margin-top: 100px;
    /* 뷰포트에 확실히 들어오게 */
}

.swiper {
    width: 100%;
    height: 100%;
}

.swiper-slide {
    text-align: center;
    font-size: 18px;
    background: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
}

.swiper-slide img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.swiper-slide-shadow-left,
.swiper-slide-shadow-right {
    background: rgba(0, 0, 0, 0.1) !important;
    /* 기존보다 훨씬 연함 */
}

/* overview research */
.research {
    padding: 40px 0;
}

.research-title {
    padding: 20px;
}

.research-title h3 {
    position: relative;
}

.research-title h4 {
    margin: 20px 0 10px;
    font-weight: 600;
}

.research-title p {
    text-align: center;
    color: #888;
    font-size: 16px;
}

.research-ul {
    width: 100%;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 50px;
    padding: 50px;
}

.research-item h5 {
    width: 40%;
    font-size: 20px;
    font-weight: 600;
    background-color: var(--main-color);
    color: #fff;
    padding: 15px;
}

.research-item p {
    font-size: 20px;
    font-weight: 600;
    width: 60%;
    padding: 20px 30px;
    border: 1px solid #fff;
    box-shadow: rgba(204, 204, 204, 0.5) 5px 5px 10px;
}

.research-item02 {
    margin-left: auto;
}

.research-item01 h5,
.research-item03 h5 {
    text-align: right;
}

.research-item02 h5 {
    display: flex;
    flex-direction: column;
    justify-self: right;
}

.research-item02 P {
    text-align: right;
    margin-left: auto;
}

/* overview banner */
.overwiew_banner {
    background: url(../img/overviwe_banner.png) no-repeat 50% 50% / cover;
    color: #fff;
    height: 440px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

/* contact */
.contact {
    padding: 80px 20px;
}

.map iframe {
    width: 800px;
    height: 440px;
}

.contact-item {
    display: flex;
    justify-content: center;
    gap: 30px;
    padding: 50px 0;
}

.contact-ul {
    font-size: 20px;
    font-weight: 600;
    line-height: 2;
}

.contact-ul li {
    display: flex;
    align-items: center;
    gap: 10px;
}

.contact-ul div {
    width: 18px;
    height: 18px;
    background-color: #888;
    flex-shrink: 0;
}
.contact-ul li:nth-of-type(2) div{
    background: url(../img/mail-icon.png) no-repeat center center;
}

.contact-ul li:nth-of-type(3) div{
    background: url(../img/call-icon.png) no-repeat center center;
}
.contact-ul li:nth-of-type(4) div{
    background: url(../img/fax-icon.png) no-repeat center center;
}
.contact-ul li:nth-of-type(5) div{
    background: url(../img/location-icon.png) no-repeat center center;
}
.contact-ul li:last-of-type {
    align-items: flex-start;
  }


  .contact-ul li:last-of-type .contact-icon {
    margin-top: 13px; 
  }
/* footer */
#footer {
    background-color: #01011A;
    color: #fff;
    padding: 30px 80px;
}

.footer-top {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
}

.footer-ul {
    color: #fff;
}

.footer-ul li {
    font-size: 16px;
    font-weight: 200;
}

.footer-ul li:nth-of-type(1) {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 10px;
}

.copy p {
    margin-top: 10px;
    font-size: 16px;
    color: #888;
}

/* 탑버튼 */
.top-btn,
.top-hover {
  position: fixed;
  bottom: 100px;
  right: 100px;
  z-index: 10;
  transition: opacity 0.3s ease;
}

/* 처음에 둘 다 겹치게 놓고 hover 이미지는 투명 */
.top-hover {
  opacity: 0;
  pointer-events: none; /* 클릭 방지 */
}

.top-btn:hover .top-hover {
  opacity: 1;
}