/* 한국어 텍스트 줄바꿈 개선을 위한 전역 스타일 */
.about-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 8rem 20px 80px;
  word-break: keep-all;
  overflow-wrap: break-word;
  line-height: 1.7;
}

.main-title {
  text-align: center;
  font-size: 2.5rem;
  font-weight: 700;
  color: #333;
  margin-bottom: 40px;
  word-break: keep-all;
  line-height: 1.4;
}

.features-section {
  display: flex;
  justify-content: space-between;
  gap: 30px;
  margin-bottom: 100px;
}

.feature-card {
  flex: 1;
  text-align: center;
  padding: 30px;
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-5px);
}

.feature-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 20px;
}

.feature-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.feature-card h2 {
  font-size: 1.5rem;
  font-weight: 600;
  color: #333;
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 1.1rem;
  color: #666;
  word-break: keep-all;
  overflow-wrap: break-word;
  line-height: 1.6;
}

.description-list p {
  font-size: 1.2rem;
  color: #555;
  line-height: 1.8;
  margin-bottom: 15px;
  word-break: keep-all;
  overflow-wrap: break-word;
}

.infrastructure-images {
  flex: 1;
  position: relative;
}

.main-image {
  width: 100%;
  border-radius: 20px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.sub-image {
  width: 100%;
  border-radius: 20px;
  margin-top: 20px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.bottom-section {
  text-align: center;
}

.bottom-text {
  font-size: 1.5rem;
  color: #555;
  line-height: 1.6;
  max-width: 800px;
  margin: 0 auto;
}

/* Tech Section */
.tech-section {
  margin: 50px 0;
}

.tech-content {
  display: flex;
  gap: 60px;
  align-items: center;
}

.tech-text-area {
  flex: 1;
  max-width: 500px;
}

.tech-item {
  padding: 30px 0;
  border-bottom: 1px solid #eee;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  border-radius: 8px;
  margin: 0 -15px;
  padding: 30px 15px;
}

.tech-item:hover {
  background: rgba(96, 38, 244, 0.03);
  transform: translateX(5px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  border-left: 3px solid rgba(96, 38, 244, 0.3);
}

.tech-item:hover h3 {
  color: #333;
}

.tech-item:hover h3 strong {
  color: #6026f4;
}

.tech-item:hover p {
  color: #555;
}

.tech-item.active {
  background: linear-gradient(to right, rgba(96, 38, 244, 0.05), transparent);
  border-left: 4px solid #6026f4;
  padding-left: 20px;
}

.tech-item h3 {
  font-size: 1.8rem;
  font-weight: 600;
  color: #666;
  margin-bottom: 15px;
  transition: all 0.3s ease;
  word-break: keep-all;
  line-height: 1.4;
}

.tech-item h3 strong {
  font-size: 2.5rem;
  font-weight: 700;
  color: #666;
  margin-bottom: 8px;
}

.tech-item.active h3 {
  color: #333;
  font-weight: 700;
  transform: translateX(10px);
}

.tech-item.active h3 strong {
  color: #6026f4;
  font-size: 3rem;
  text-shadow: 0 2px 4px rgba(96, 38, 244, 0.2);
}

.tech-item p {
  font-size: 1.1rem;
  color: #888;
  line-height: 1.6;
  transition: all 0.3s ease;
  word-break: keep-all;
  overflow-wrap: break-word;
}

.tech-item.active p {
  color: #333;
  transform: translateX(10px);
  font-weight: 500;
}

.tech-image-area {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.tech-image-area img {
  max-width: 100%;
  height: auto;
  border-radius: 20px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  transform: scale(1);
}

.tech-image-area img:hover {
  transform: scale(1.02);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

/* History Section */
.history-section {
  margin: 15rem 0;
}

.history-content {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 20px;
}

.history-timeline {
  position: relative;
  padding: 40px 0;
}

.history-timeline::before {
  content: "";
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: 100%;
  background: #eee;
}

.history-item {
  position: relative;
  margin-bottom: 30px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.history-item:last-child {
  margin-bottom: 0;
}

.history-item .year {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  background: #fff;
  padding: 0 20px;
  font-size: 1.2rem;
  font-weight: 600;
  color: #666;
  z-index: 1;
}

.history-item .content {
  width: 45%;
  margin-left: auto;
  padding: 30px;
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

.history-item:nth-child(even) .content {
  margin-left: 0;
  margin-right: auto;
}

.history-item h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: #333;
  margin-bottom: 15px;
  word-break: keep-all;
  line-height: 1.4;
}

.history-item .details {
  font-size: 1.1rem;
  color: #666;
  line-height: 1.6;
  word-break: keep-all;
  overflow-wrap: break-word;
}

.history-item .details ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.history-item .details li {
  position: relative;
  padding-left: 20px;
}

.history-item .details li:last-child {
  margin-bottom: 0;
}

.history-item .details li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #6026f4;
}

.history-item.active .details li::before {
  background: #6026f4;
  box-shadow: 0 0 0 2px rgba(96, 38, 244, 0.2);
}

.history-item.active .year {
  color: #6026f4;
  font-weight: 700;
}

.history-item.active .content {
  background: linear-gradient(to right, rgba(96, 38, 244, 0.05), #fff);
  border-left: 4px solid #6026f4;
}

.history-item:hover .content {
  transform: translateY(-5px);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

@media (max-width: 768px) {
  .about-container {
    padding: 6rem 15px 60px;
    line-height: 1.8;
  }

  .features-section {
    flex-direction: column;
    gap: 20px;
  }

  .feature-card {
    padding: 20px;
  }

  .feature-card p {
    font-size: 1rem;
    line-height: 1.7;
  }

  .main-title {
    font-size: 2rem;
    line-height: 1.3;
    margin-bottom: 30px;
    padding: 0 10px;
  }

  .section-title {
    font-size: 2rem;
    margin-bottom: 40px;
    word-break: keep-all;
    line-height: 1.3;
    padding: 0 10px;
  }

  .infrastructure-content {
    flex-direction: column;
    gap: 40px;
  }

  .vehicle-count .number {
    font-size: 3rem;
  }

  .vehicle-count .unit {
    font-size: 2rem;
  }

  .description-list p {
    font-size: 1.1rem;
    line-height: 1.8;
    padding: 0 5px;
  }

  .bottom-text {
    font-size: 1.1rem;
    line-height: 1.7;
    padding: 0 10px;
  }

  .tech-content {
    flex-direction: column-reverse;
    gap: 40px;
  }

  .tech-text-area {
    max-width: 100%;
  }

  .tech-item {
    padding: 20px 10px;
    margin: 0 -10px;
  }

  .tech-item h3 {
    font-size: 1.4rem;
    line-height: 1.3;
  }

  .tech-item h3 strong {
    font-size: 2.2rem;
  }

  .tech-item.active h3 strong {
    font-size: 2.5rem;
  }

  .tech-item p {
    font-size: 0.95rem;
    line-height: 1.7;
  }

  .tech-item.active h3,
  .tech-item.active p {
    transform: translateX(5px);
  }

  .history-timeline::before {
    left: 30px;
  }

  .history-item .year {
    left: 30px;
    transform: none;
    font-size: 1.1rem;
    padding: 0 15px;
  }

  .history-item .content {
    width: calc(100% - 60px);
    margin-left: 60px;
    padding: 20px;
  }

  .history-item:nth-child(even) .content {
    margin-left: 60px;
    margin-right: 0;
  }

  .history-item h3 {
    font-size: 1.3rem;
    line-height: 1.3;
  }

  .history-item .details {
    font-size: 1rem;
    line-height: 1.7;
  }

  .delivery-feature-section {
    margin: 60px 0;
    padding: 50px 0;
  }

  .delivery-feature-section .main-title {
    font-size: 1.8rem;
    margin-bottom: 50px;
    line-height: 1.3;
    padding: 0 15px;
  }

  .delivery-feature-title {
    font-size: 1.1rem;
    line-height: 1.4;
  }

  .delivery-feature-desc {
    font-size: 0.95rem;
    padding: 15px 10px;
    line-height: 1.7;
  }

  .contact-content h3 {
    font-size: 1.1rem;
  }

  .contact-content p {
    font-size: 0.95rem;
    line-height: 1.6;
  }
}

/* 추가 모바일 최적화 (480px 이하) */
@media (max-width: 480px) {
  .about-container {
    padding: 5rem 12px 50px;
  }

  .main-title {
    font-size: 1.6rem;
    line-height: 1.2;
    margin-bottom: 25px;
  }

  .delivery-feature-section .main-title {
    font-size: 1.5rem;
    line-height: 1.2;
    margin-bottom: 40px;
  }

  .tech-item h3 {
    font-size: 1.2rem;
  }

  .tech-item h3 strong {
    font-size: 1.8rem;
  }

  .tech-item.active h3 strong {
    font-size: 2rem;
  }

  .tech-item p {
    font-size: 0.9rem;
    line-height: 1.8;
  }

  .history-item h3 {
    font-size: 1.2rem;
  }

  .history-item .details {
    font-size: 0.9rem;
    line-height: 1.8;
  }

  .delivery-feature-title {
    font-size: 1rem;
    line-height: 1.5;
  }

  .delivery-feature-desc {
    font-size: 0.9rem;
    line-height: 1.8;
  }
}

/* 스크롤 애니메이션 효과 */
.fade-in-section {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-section.visible {
  opacity: 1;
  transform: translateY(0);
}

.slide-up-section {
  opacity: 0;
  transform: translateY(50px);
  transition: opacity 1s ease, transform 1s ease;
}

.slide-up-section.visible {
  opacity: 1;
  transform: translateY(0);
}

.scale-in-section {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.scale-in-section.visible {
  opacity: 1;
  transform: scale(1);
}

/* 개별 요소들에 대한 스타일링 */
.tech-section {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.tech-section.visible {
  opacity: 1;
  transform: translateY(0);
}

.history-section {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.history-section.visible {
  opacity: 1;
  transform: translateY(0);
}

.history-item {
  opacity: 0;
  transform: translateX(-20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.history-item.visible {
  opacity: 1;
  transform: translateX(0);
}

.history-item:nth-child(1) {
  transition-delay: 0.05s;
}

.history-item:nth-child(2) {
  transition-delay: 0.1s;
}

.history-item:nth-child(3) {
  transition-delay: 0.15s;
}

.history-item:nth-child(4) {
  transition-delay: 0.2s;
}

/* Location Section */
.location-section {
  margin: 100px 0;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.location-section.visible {
  opacity: 1;
  transform: translateY(0);
}

.location-content {
  display: flex;
  gap: 60px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.contact-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 25px;
  justify-content: center;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 0;
  transition: all 0.3s ease;
  opacity: 0;
  transform: translateX(-20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.contact-item.visible {
  opacity: 1;
  transform: translateX(0);
}

.contact-item:nth-child(1) {
  transition-delay: 0.05s;
}

.contact-item:nth-child(2) {
  transition-delay: 0.1s;
}

.contact-item:nth-child(3) {
  transition-delay: 0.15s;
}

.contact-item:nth-child(4) {
  transition-delay: 0.2s;
}

.contact-item:nth-child(5) {
  transition-delay: 0.25s;
}

.contact-icon {
  width: 48px;
  height: 48px;
  background: rgba(96, 38, 244, 0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.3s ease;
}

.contact-item:hover .contact-icon {
  background: rgba(96, 38, 244, 0.15);
  transform: scale(1.05);
}

.contact-content {
  flex: 1;
}

.contact-content h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: #333;
  margin-bottom: 8px;
  word-break: keep-all;
}

.contact-content p {
  font-size: 1.1rem;
  color: #666;
  line-height: 1.6;
  margin: 0;
  word-break: keep-all;
  overflow-wrap: break-word;
}

.contact-content p + p {
  margin-top: 4px;
}

.map-container {
  flex: 1;
  border-radius: 15px;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
  transition: all 0.3s ease;
  opacity: 0;
  transform: scale(0.95);
  transition: opacity 0.6s ease 0.2s, transform 0.6s ease 0.2s;
  background: transparent;
  line-height: 0;
}

.map-container.visible {
  opacity: 1;
  transform: scale(1);
}

.map-container:hover {
  transform: scale(1.02);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
}

.google-map {
  width: 100%;
  height: 450px;
  border: 0;
  display: block;
  background: transparent;
  vertical-align: top;
}

@media (max-width: 768px) {
  .location-content {
    flex-direction: column;
    gap: 40px;
  }

  .contact-info {
    gap: 20px;
  }

  .contact-item {
    gap: 15px;
  }

  .contact-icon {
    width: 40px;
    height: 40px;
  }

  .contact-content h3 {
    font-size: 1.2rem;
  }

  .contact-content p {
    font-size: 1rem;
  }

  .google-map {
    height: 300px;
  }
}

/* Delivery Feature Section (유진소닉의 빠른 배송은 특별합니다) */
.delivery-feature-section {
  margin: 0 0 15rem 0;
  padding: 80px 0;
}

.delivery-feature-section .main-title {
  font-size: 2.8rem;
  font-weight: 700;
  margin-bottom: 80px;
  color: #333;
  text-align: center;
}

.delivery-feature-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 60px;
  margin-bottom: 60px;
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
}

.delivery-feature-item {
  text-align: center;
  transition: transform 0.3s ease;
}

.delivery-feature-item:hover {
  transform: translateY(-5px);
}

.delivery-feature-icon {
  width: 120px;
  height: 120px;
  margin: 0 auto 25px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.delivery-feature-icon img {
  width: 80px;
  height: 80px;
}

.delivery-feature-title {
  font-size: 1.3rem;
  font-weight: 600;
  color: #333;
  line-height: 1.4;
  margin-bottom: 10px;
  word-break: keep-all;
}

.delivery-feature-desc {
  text-align: center;
  font-size: 1.1rem;
  color: #666;
  line-height: 1.6;
  max-width: 600px;
  margin: 0 auto;
  padding: 20px 0;
  word-break: keep-all;
  overflow-wrap: break-word;
}

@media (max-width: 900px) {
  .delivery-feature-list {
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
  }
  .delivery-feature-section {
    padding: 60px 0;
  }
  .delivery-feature-section .main-title {
    font-size: 2.4rem;
    margin-bottom: 60px;
  }
}

@media (max-width: 600px) {
  .delivery-feature-list {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .delivery-feature-section {
    margin: 60px 0;
    padding: 50px 0;
  }
  .delivery-feature-section .main-title {
    font-size: 2rem;
    margin-bottom: 50px;
  }
  .delivery-feature-icon {
    width: 100px;
    height: 100px;
    margin-bottom: 20px;
  }
  .delivery-feature-icon img {
    width: 60px;
    height: 60px;
  }
  .delivery-feature-title {
    font-size: 1.2rem;
  }
  .delivery-feature-desc {
    font-size: 1rem;
    padding: 15px 0;
  }
}

/* Territory Management 설명 텍스트 */
.tm-description {
  font-size: 0.6em;
  opacity: 0.6;
}

/* 작은 각주 텍스트 */
.small-note {
  font-size: 0.75em;
  opacity: 0.7;
  color: #888;
}