.main-header {
  width: 100%;
  max-width: 430px;
  margin: 0 auto;
  text-align: center;
  color: var(--main-color);
}

.main-header__eyebrow {
  margin-bottom: 0.85em;
  padding-bottom: 0.75em;
  font-size: var(--text-xl);
  letter-spacing: 0.15em;
  border-bottom: 1px solid var(--main-color);
}

.main-header__title {
  font-size: 2.5em;
  font-weight: 500;
  letter-spacing: 0.1em;
}

.main-hero {
  position: relative;
  z-index: 0;
  overflow: hidden;
  color: #fff;
}

.main-hero:after {
  content:'';
  position: absolute;
  z-index: 1;
  bottom: 0;
  left: 50%;
  display: block;
  width: 120%;
  height: 35%;
  transform:translate(-50%,50%);
  background-color: var(--secondary);
  border-radius:50%;

}

.main-hero__item {
  padding: var(--header-height) 0;
  min-height: 112dvh;
}

.main-hero__content {
  padding-top: 14.35em;
}

.main-hero__eyebrow {
  margin-bottom: 0.5em;
  font-size: var(--text-xl);
  letter-spacing: -0.025em;
}

.main-hero__title {
  font-size: 4.875em;
  line-height: 1.2;
  letter-spacing: -0.006em;
}

.main-hero__desc {
  margin-top: 0.4em;
  font-size: var(--text-lg);
  font-family: var(--font-gothic);
  letter-spacing: -0.0275em;
}

.main-hero__scroll {
  position: absolute;
  z-index: 2;
  inset: 0;
  top: auto;
  width: max-content;
  margin: 0 auto 14%;
  display: flex;
  align-items: center;
  flex-direction: column;
  gap: 0.8em;
  font-weight: 300;
  font-family: var(--font-gothic);
  letter-spacing: 0.1em;
  animation: scrollAnimation 2s infinite ease-in-out;
}

.main-hero__icon {
  width: 1.4em;
}
@media(max-width:1080px){
  .main-hero__scroll {bottom: 8%;}
}
@media(max-width:768px){
  .main-hero:after {
    width: 180%;
  }

  .main-hero__scroll {
    bottom: 20%;
  }
}

@keyframes scrollAnimation {
  0% {
    transform: translateY(-8px);
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  100% {
    transform: translateY(8px);
    opacity: 0;
  }
}

.main-brand {
  padding:5.25em 0 6.25em;
}

.main-brand__container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.main-brand__frame {
  margin-top: 4.85em;
  border-radius: 60px;
  overflow: hidden;
  box-shadow: var(--shadow-1);
}

.main-brand__desc {
  margin: 2.55em 0 2.4em;
  text-align: center;
  font-size: var(--text-2xl);
  font-weight: 500;
  line-height: 1.6;
  color: var(--gray-800);
  font-family: var(--font-gothic);
  letter-spacing: -0.02em;
}

.main-signature {
  padding: 6.25em 0;
}

.main-signature__container {
  display: flex;
  flex-direction: column;
  gap: 6.2em;
}

.main-signature__wrapper {
  position: relative;
  z-index: 0;
}

.main-signature__float {
  position: sticky;
  z-index: 10;
  width: 100%;
  height: 0;
  top: 50%;    
  align-items: flex-end;  
  pointer-events:none;
  opacity: 0;
  visibility:hidden;
  transition: 
    .3s opacity,
    .3s visibility
}

.main-signature__float--active {
  opacity: 1;
  visibility:visible;
}

.main-signature__nav {
  position: absolute;
  right: 8.334%;  
  transform:translateY(-50%);
  display: flex;
  justify-content: center;
  flex-direction: column;
  gap: 12px;
}

.main-signature__btn {
  display: block;
  width: 6px;
  height: 6px;
  background-color: #fff;
  border-radius: 50%;
  transition:
    background-color 0.2s ease,
    border-radius 0.2s ease,
    height 0.2s ease-in-out; /* s 추가 */
  pointer-events: auto;
}

.main-signature__btn[aria-selected="true"] {
  height: 80px;
  background-color: var(--fourth);
  border-radius: 20px;
}

.main-signature__stack {
  position: relative;
  color: #fff;
}

.main-signature__card {
  position:sticky;
  top:0;
  padding: 20px 0;
  display: flex;
  flex-direction: column;
  min-height: 112dvh;
}

.main-signature__content {
  flex:1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 calc(8.334% + 2em) 0 8.334%;
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center;
  border-radius: 80px;  
}

.main-signature__content--1 {
  background-image: url("./img/main_signature_1.jpg");
}

.main-signature__content--2 {
  background-image: url("./img/main_signature_2.jpg");
}

.main-signature__content--3 {
  background-image: url("./img/main_signature_3.jpg");
}

.main-signature__content--4 {
  background-image: url("./img/main_signature_4.jpg");
}

.main-signature__content--5 {
  background-image: url("./img/main_signature_5.jpg");
}

.main-signature__content--6 {
  background-image: url("./img/main_signature_6.jpg");
}

.main-signature__content--7 {
  background-image: url("./img/main_signature_7.jpg");
}

.main-signature__content--8 {
  background-image: url("./img/main_signature_8.jpg");
}

.main-signature__content--9 {
  background-image: url("./img/main_signature_9.jpg");
}

@media(max-width:1080px){
  .main-signature__content {border-radius:60px;}
}

@media(max-width:768px){
  .main-signature__content {border-radius:40px;}
}

@media(max-width:500px){
  .main-signature__content {border-radius:20px;}
}

.main-signature__title {
  font-size: 2.5em;
  font-weight: 600;
  letter-spacing: -0.022em;
}

.main-signature__desc {
  margin: 1.75em 0 1.65em;
  font-size: var(--text-2xl);
  font-weight: 500;
  line-height: 1.6;
  font-family: var(--font-gothic);
  letter-spacing: -0.02em;
}

.main-equipment {
  padding-bottom: 6.25em;
}

.main-equipment__container {
  position: relative;
  margin-top: 4.9em;
  padding-left: 15.4762%;
}

.main-equipment__tabs {
  position: absolute;
  z-index: 1;
  top: 50%;
  left: 0;
  transform:translateY(-50%);
  width: 18.75em;
}

.main-equipment__btn {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap:1em;
  width: 100%;
  min-height: 3.8em;
  font-size: var(--text-xl);
  padding:0.5em 1.6em 0.5em 2em;
  letter-spacing: -0.05em;
  color: var(--gray-600);
  font-weight: 500;
  transition: 
    color .3s,
    background-color .3s;
}

.main-equipment__btn[aria-selected="true"] {
  background-color: var(--main-color);
  color: #fff;
}

.main-equipment__arrow {
  filter:brightness(0) invert(1);
  opacity: 0;
  visibility:hidden;
  transition: 
    opacity .3s,
    visibility .3s;
}

.main-equipment__btn[aria-selected="true"] .main-equipment__arrow {
  opacity: 1;
  visibility: visible;
}

.main-equipment__panel[aria-hidden="false"] {
  display: flex;
}

.main-equipment__panel[aria-hidden="true"] {
  display: none;
}

.main-equipment__frame {
  width: 49.2958%;
  border-radius:40px;
  overflow: hidden;
  height: 33.75em;
}

.main-equipment__img {
  width: 100%;
  height: 100%;
  object-fit:cover;
}

.main-equipment__text {
  width: 50.7042%;
  padding-left: 3.75em;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.main-equipment__title {
  font-size: 2.25em;
  font-weight: 700;
  color: var(--gray-900);
}

.main-equipment__desc {
  margin:2em 0;
  font-size: var(--text-lg);
  color: var(--gray-700);
  line-height: 1.6;
  letter-spacing: -0.03em;
}

.main-equipment__body {
  margin-top: 3em;
}

.main-equipment__swiper {
    overflow: hidden;
}

.main-equipment__category {
  margin-bottom: 0.95em;
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--gray-900);
  letter-spacing: -0.03em;
}

.main-equipment__name {
  margin-top: 0.8em;
  font-family: var(--font-gothic);
  font-size: var(--text-lg);
  font-weight: 600;
  transition: color .3s;
}

.main-equipment__thumb {
  border:1px solid transparent;
  transition:border-color .3s;
}

@media(hover:hover) {
  .main-equipment__btn[aria-selected="false"]:hover {
    background-color: var(--main-color);
    color: #fff;
  }
  .main-equipment__btn[aria-selected="false"]:hover .main-equipment__arrow {
    opacity: 1;
    visibility:visible;
  }
}

.main-equipment .swiper-slide-active .main-equipment__thumb {
  border-color:var(--main-color)
}

.main-equipment .swiper-slide-active .main-equipment__name {
  color: var(--main-color);
}

@media(max-width:768px){
  .main-equipment__container {padding-left: 0;}
  .main-equipment__tabs {position: static; transform:none; display: grid; grid-template-columns: repeat(2, 1fr); width: 100%; margin-bottom: 2em;}
  .main-equipment__panel {flex-direction:column;}
  .main-equipment__frame {width: 100%; aspect-ratio:4/2.5; height: auto;}
  .main-equipment__text { margin-top: 2em; padding-left: 0; width: 100%;}
}