* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: 'Pretendard', sans-serif;
  color: #333;
  line-height: 1.6;
  letter-spacing: -0.02em;
}
a {
  text-decoration: none;
  color: inherit;
}
ul {
  list-style: none;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 100px 20px;
}
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 30px 50px;
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
  transition: 0.3s;
}
header.scrolled {
  background: #fff;
  border-bottom: 1px solid #eee;
  padding: 15px 50px;
}
.logo {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: 2px;
}
.nav ul {
  display: flex;
  gap: 40px;
}
.nav a {
  font-size: 14px;
  font-weight: 500;
}
.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #fff;
  background-image: linear-gradient(rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.2)), url('../img/img2-1.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
}
.hero-text .sub-title {
  font-size: 30px;
  margin-bottom: 10px;
  color: #333333;
}
.hero-text .main-title {
  font-size: 80px;
  font-weight: 300;
  margin-bottom: 30px;
}
.section-title {
  font-size: 40px;
  text-align: center;
  margin-bottom: 60px;
  font-weight: 400;
}
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}
.img-box {
  width: 100%;
  aspect-ratio: 3 / 4;
  background: #eee;
  margin-bottom: 15px;
  overflow: hidden;
}
.img-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.item:hover .img-box img {
  transform: scale(1.05);
}
.item p {
  font-size: 16px;
  margin-bottom: 5px;
}
.item span {
  font-size: 14px;
  color: #999;
}
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}
.fade-in.active {
  opacity: 1;
  transform: translateY(0);
}
.filter-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 13px;
  color: #999;
  padding: 0 5px;
  transition: 0.3s;
}
.filter-btn.active,
.filter-btn:hover {
  color: #000;
  font-weight: bold;
}
.item {
  display: block;
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.item.hide {
  display: none;
}
.detail-container {
  display: flex;
  gap: 60px;
  padding-top: 150px;
  max-width: 1200px;
  margin: 0 auto;
  align-items: stretch;
}
.detail-images {
  flex: 1;
  max-width: 600px;
}
.detail-info {
  flex: 0.8;
  min-width: 350px;
  opacity: 1 !important;
  transform: none !important;
  position: relative;
}
.big-img,
.sub-img {
  width: 100%;
  max-height: 80vh;
  aspect-ratio: 3/4;
  background: #eee;
  margin-bottom: 20px;
  overflow: hidden;
}
.big-img img,
.sub-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.info-sticky {
  position: -webkit-sticky;
  position: sticky;
  top: 120px;
  height: fit-content;
}
.category {
  font-size: 12px;
  color: #aaa;
  margin-bottom: 10px;
}
.product-name {
  font-size: 24px;
  font-weight: 400;
  margin-bottom: 10px;
}
.price {
  font-size: 18px;
  margin-bottom: 20px;
  border-bottom: 1px solid #eee;
  padding-bottom: 15px;
}
.description {
  font-size: 13px;
  line-height: 1.8;
  color: #666;
  margin-bottom: 20px;
}
.opt-group {
  margin-bottom: 20px;
}
.opt-group label {
  display: block;
  font-size: 11px;
  margin-bottom: 8px;
  color: #888;
}
.opt-group select {
  width: 100%;
  padding: 10px;
  border: 1px solid #ddd;
  outline: none;
}
.buy-btns {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 20px;
}
.buy-btns button {
  padding: 18px;
  cursor: pointer;
  border: 1px solid #000;
  font-size: 14px;
  transition: 0.3s;
}
.btn-white {
  background: #fff;
  color: #000;
}
.btn-white:hover {
  background: #f9f9f9;
}
.footer {
  background: #fff;
  border-top: 1px solid #eee;
  padding: 80px 0;
  margin-top: 150px;
}
.footer .info-box {
  text-align: center;
  font-size: 13px;
  color: #888;
  line-height: 2;
}
.footer .info-box h3 {
  font-size: 18px;
  font-weight: 500;
  letter-spacing: 4px;
  margin-bottom: 25px;
  color: #333;
}
.footer .sns-links {
  margin-top: 25px;
}
.footer .sns-links a {
  color: #333;
  font-weight: 600;
  font-size: 12px;
  margin: 0 10px;
}
.footer .copy {
  margin-top: 40px;
  font-size: 11px;
  color: #ccc;
  letter-spacing: 0;
}
.item a {
  text-decoration: none;
  color: inherit;
  display: block;
}
.top-margin {
  padding-top: 180px !important;
  min-height: 80vh;
}
.nav ul li a {
  position: relative;
  text-decoration: none;
  color: #000;
  padding-bottom: 5px;
}
.nav ul li a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background-color: #ccc;
  transition: width 0.3s ease;
}
.nav ul li a:hover::after {
  width: 100%;
  background-color: #ccc
}
.nav ul li a.active::after {
  width: 100%;
  background-color: #ccc
}
.m-menu-btn {
  display: none;
}
.m-nav {
  display: none;
}
.nav ul li a {
  position: relative;
  text-decoration: none;
  color: #000;
  padding-bottom: 5px;
}
.nav ul li a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background-color: #ccc;
  transition: width 0.3s ease;
}
.nav ul li a:hover::after,
.nav ul li a.active::after {
  width: 100%;
}
.sns-links a {
  color: #333;
  text-decoration: none;
  transition: 0.3s;
}
.sns-links a:hover {
  color: #888;
}
.btn-more {
  border-bottom: 1px solid #333;
  position: relative;
  display: inline-block;
  padding-bottom: 5px;
  color: #000000;
  text-decoration: none;
  font-size: 22px;
  border: none;
  background: none;
  transition: color 0.3s ease;
}
.btn-more:hover {
  color: #e1e1e1;
}
.btn-more::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background-color: #888;
  transform: scaleX(0);
  transform-origin: bottom right;
  transition: transform 0.4s cubic-bezier(0.86, 0, 0.07, 1);
  animation: initial-line 2.5s ease-out;
}
.btn-more:hover::after {
  transform: scaleX(1);
  transform-origin: bottom left;
}
.portfolio-notice {
  position: relative;
}
.portfolio-notice::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  border-top: 1px dashed #eee;
}
@keyframes initial-line {
  0% {
    transform: scaleX(0);
    transform-origin: bottom left;
  }
  30% {
    transform: scaleX(1);
    transform-origin: bottom left;
  }
  70% {
    transform: scaleX(1);
    transform-origin: bottom right;
  }
  100% {
    transform: scaleX(0);
    transform-origin: bottom right;
  }
}
.m-break {
  display: none;
}
.contact-form {
  margin-top: 30px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.contact-form input,
.contact-form textarea,
.contact-form select {
  width: 100%;
  padding: 15px 5px;
  border: none;
  border-bottom: 1px solid #ddd;
  background: transparent;
  outline: none;
  transition: 0.3s;
  font-family: inherit;
}
.contact-form input:focus,
.contact-form textarea:focus {
  border-bottom-color: #000;
}
.btn-black {
  background-color: #000;
  color: #fff;
  border: 1px solid #000;
  padding: 20px;
  cursor: pointer;
  font-size: 14px;
  display: block;
  width: 100%;
  transition: background-color 0.1s ease, border-color 0.1s ease, opacity 1s ease-out, transform 1s ease-out;
}
.btn-black.fade-in {
  opacity: 0;
  transform: translateY(20px);
}
.btn-black.fade-in.active {
  opacity: 1;
  transform: translateY(0);
}
.complete-msg {
  text-align: center;
  padding: 40px 20px;
  border: 1px solid #eee;
  background: #f9f9f9;
  margin-top: 20px;
}
.complete-msg h3 {
  font-size: 18px;
  font-weight: 500;
  margin-bottom: 10px;
}
.complete-msg p {
  font-size: 13px;
  color: #888;
}
.top-btn {
  position: fixed;
  bottom: 40px;
  right: 40px;
  width: 50px;
  height: 80px;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  transition: all 0.4s cubic-bezier(0.25, 0.1, 0.25, 1);
  opacity: 0;
  visibility: hidden;
}
.top-btn.show {
  opacity: 1;
  visibility: visible;
}
.line-vertical {
  width: 1px;
  height: 40px;
  background-color: #333;
  margin-bottom: 10px;
  transition: height 0.4s ease, background-color 0.4s ease;
}
.btn-text {
  font-size: 11px;
  letter-spacing: 2px;
  color: #333;
  font-weight: 500;
  transition: transform 0.4s ease;
}
@media (mouseover: hover) {
  .top-btn:hover .line-vertical {
    height: 60px;
    background-color: #000;
  }
  .top-btn:hover .btn-text {
    transform: translateY(-5px);
    font-weight: 700;
  }
}
.top-btn:active .line-vertical {
  height: 60px;
  background-color: #000;
}
.top-btn:active .btn-text {
  transform: translateY(-5px);
}
.line-animation-container {
  position: relative;
  display: inline-block;
  padding: 20px 0;
  margin-bottom: 40px;
}
.animated-line {
  position: absolute;
  left: 0;
  width: 0;
  height: 1px;
  background-color: #111;
  transition: width 1.2s cubic-bezier(0.43, 0.13, 0.23, 0.96);
  -webkit-font-smoothing: antialiased;
  transform: translateZ(0);
  backface-visibility: hidden;
}
.animated-line.top {
  top: 0;
}
.animated-line.bottom {
  display: none;
}
.line-animation-container.active .animated-line {
  width: 100%;
}
.line-animation-container.active .animated-line.bottom {
  transition-delay: 0.3s;
}
.full-img {
  width: 100%;
  height: 80vh;
  background: #f5f5f5;
  margin-bottom: 80px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.full-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.full-img:hover img {
  transform: scale(1.05);
}
section.container.top-margin.about-hero {
  position: relative;
  width: 100%;
  padding-top: 150px;
  padding-bottom: 150px;
  background-image: linear-gradient(rgba(255, 255, 255, 0.327), rgba(255, 255, 255, 0.47)), url('../img/about.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
.about-content {
  max-width: 1200px;
  margin: 0 auto;
}
@keyframes blink-effect {
  0% {
    opacity: 1;
    box-shadow: 0 0 0px rgba(0, 0, 0, 0.2);
  }
  50% {
    opacity: 0.7;
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.5);
    transform: scale(1.02);
  }
  100% {
    opacity: 1;
    box-shadow: 0 0 0px rgba(0, 0, 0, 0.2);
  }
}
.hero .btn-more {
  display: inline-block;
  padding: 16px 30px;
  border: 1px solid #fff;
  color: #f0f0f0;
  text-decoration: none;
  transition: all 0.3s ease;
  animation: blink-effect 2s infinite ease-in-out;
}
.hero .btn-more:hover {
  background: #eeeeee63;
  color: #000;
  animation: none;
}