/* Brand Intro Page */

/* [수정] footer 공통 스타일은 common.css로 이동 */

/* ==========================================================================
 * Brand Intro - Actual Components
 * ========================================================================== */

.brandIntro-main {
  background-color: var(--wh);
}

.bi-container {
  width: 100%;
  margin: 0 auto;
}

.bi-about-hero {
  position: relative;
  padding: var(--hero-pt) 0 var(--page-pb);
  overflow: hidden;
  border-bottom: 1px solid var(--g-200);
  background-image: url("/images/pictures/brandIntro-main.png");
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center;
}

.bi-about-hero__inner {
  position: relative;
  padding: 0 var(--page-px);
}

.bi-about-hero__title {
  font-weight: 600;
}

.bi-about-hero__title-strong {
  color: var(--bl);
  display: inline-block;
  font-size: var(--fs-hero);
  line-height: 1.3;
}

.bi-about-hero__title-accent {
  color: var(--g-500);
  display: inline-block;
  font-size: var(--fs-hero);
  line-height: 1.3;
}

.bi-about-hero__desc {
  margin-top: 20px;
  font-size: var(--fs-body);
  color: var(--g-600);
  line-height: 1.5;
  max-width: 980px;
}

.bi-about {
  padding: 20px var(--page-px);
}

.bi-about__header {
  padding: 40px 0;
}

.bi-about__brand {
  font-size: var(--fs-hero);
  font-weight: 600;
  letter-spacing: -0.5px;
  text-transform: uppercase;
  line-height: 1.3;
}

.bi-about__brand-left {
  color: var(--bl);
  font-size: var(--fs-hero);
}

.bi-about__brand-right {
  color: var(--primary);
  font-size: var(--fs-hero);
}

.bi-about__content {
  display: flex;
  gap: 40px;
}

.bi-about__copy {
  flex: 1;
  color: var(--g-600);
  line-height: 1.5;
}

.bi-about__copy p + p {
  margin-top: 12px;
}

.bi-about__stats {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 40px;
  align-content: start;
}

.bi-stat {
  border-top: 1px solid var(--g-200);
  padding: 20px 0;
}

.bi-stat__label {
  font-size: var(--fs-detail);
  color: var(--g-600);
  letter-spacing: -0.5px;
}

.bi-stat__value {
  margin-top: 10px;
  display: flex;
  gap: 10px;
  align-items: flex-end;
}

.bi-stat__number {
  font-size: var(--fs-hero);
  font-weight: 600;
  letter-spacing: -0.5px;
  text-transform: uppercase;
  line-height: 1;
  color: var(--bl);
}

.bi-stat__unit {
  font-size: var(--fs-body);
  font-weight: 600;
  color: var(--bl);
  line-height: 1;
  padding-bottom: 8px;
}

.bi-section-title {
  font-size: var(--fs-hero);
  font-weight: 600;
  letter-spacing: -0.5px;
  text-transform: uppercase;
  line-height: 1.3;
}

.bi-solution__title {
  border-bottom: 1px solid var(--g-200);
  padding: 200px var(--page-px) 40px;
}

.bi-solution__interactive {
  display: flex;
  align-items: flex-start;
}

.bi-solution__media-frame {
  position: sticky;
  top: 0;
  width: 50%;
  height: 100vh;
  overflow: hidden;
}

.bi-solution__media-track {
  position: relative;
  width: 100%;
  height: 100%;
}

.bi-solution__media-item {
  position: absolute;
  inset: 0;
  transform: translateY(100%);
  /* opacity: 0; */
  transition: transform 0.9s cubic-bezier(0.22, 0.5, 0.36, 1);
}

.bi-solution__media-item.is-active {
  transform: translateY(0);
  opacity: 1;
  z-index: 2;
}

.bi-solution__media-item.is-prev {
  transform: translateY(-100%);
  /* opacity: 0; */
  z-index: 1;
}

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

.bi-solution__steps {
  width: 50%;
}

.bi-solution-step {
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.bi-solution-step__text {
  padding: 0 var(--page-px);
}

/* 모바일 전용 인라인 이미지 — 데스크톱은 스티키 프레임 사용 */
.bi-solution-step__media {
  display: none;
}

.bi-solution-step__kicker {
  color: var(--g-500);
  font-size: var(--fs-subtitle);
  font-weight: 600;
  letter-spacing: -0.5px;
  line-height: 1.4;
  text-transform: uppercase;
}

.bi-solution-step__headline {
  color: var(--bl);
  font-size: var(--fs-subtitle);
  font-weight: 600;
  letter-spacing: -0.5px;
  line-height: 1.4;
  text-transform: uppercase;
}

.bi-solution-step__body {
  margin-top: 10px;
  font-size: 16px;
  color: var(--g-600);
  line-height: 1.5;
}

.bi-history {
  padding-bottom: 120px;
}

.bi-history__title {
  border-bottom: 1px solid var(--g-200);
  padding: 200px var(--page-px) 40px;
}

.bi-history__group {
  display: flex;
  padding: 60px var(--page-px);
}

.bi-history__group-title {
  width: 50%;
}

.bi-history__group-title-line {
  font-size: var(--fs-subtitle);
  font-weight: 600;
  color: var(--bl);
  letter-spacing: -0.5px;
  text-transform: uppercase;
  line-height: 1.4;
}

.bi-history__rows {
  width: 50%;
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.bi-history-year {
  display: flex;
  flex-direction: column;
  gap: 20px;
  align-items: flex-start;
}

.bi-history-year__media img {
  width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
}

.bi-history-year__content {
  width: 100%;
  display: flex;
  gap: 20px;
  padding-top: 10px;
}

.bi-history-year__label {
  width: 20%;
  font-size: var(--fs-body);
  font-weight: 600;
  letter-spacing: -0.5px;
  color: var(--bl);
  line-height: 1.5;
}

.bi-history-year__events {
  display: flex;
  width: 80%;
  flex-direction: column;
  gap: 20px;
}

.bi-history-year__events p {
  font-size: var(--fs-body);
  font-weight: 600;
  letter-spacing: -0.5px;
  color: var(--bl);
  line-height: 1.5;
}

/* ==========================================================================
 * Responsive
 * ========================================================================== */
@media (max-width: 1024px) {
  .bi-container {
    padding: 0;
  }

  .bi-about-hero {
    padding: var(--hero-pt) var(--page-px) var(--page-pb);
    border: none;
    background: none;
  }

  .bi-about-hero__inner {
    padding: 0;
  }

  .bi-about-hero__decor {
    display: none;
  }

  .bi-about-hero__desc {
    margin-top: 10px;
    max-width: none;
  }

  .bi-about {
    padding: 0 var(--page-px) 80px;
  }

  .bi-about__header {
    padding: 0;
  }

  .bi-about__content {
    flex-direction: column;
    gap: 20px;
  }

  .bi-about__brand {
    padding: 10px 0;
  }

  .bi-about__stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }

  .bi-stat__label {
    white-space: normal;
  }

  .bi-stat__value {
    gap: 5px;
  }

  .bi-stat__unit {
    padding-bottom: 4px;
  }

  .bi-solution__title,
  .bi-history__title {
    padding: 20px var(--page-px);
  }

  .bi-solution__interactive {
    display: block;
  }

  .bi-solution__media-frame {
    display: none;
  }

  .bi-solution__steps {
    width: 100%;
  }

  .bi-solution-step {
    min-height: auto;
    flex-direction: column;
    align-items: stretch;
  }

  .bi-solution-step__media {
    display: block;
    width: 100%;
    overflow: hidden;
  }

  .bi-solution-step__media-img {
    width: 100%;
    aspect-ratio: 4 / 3;
    height: auto;
    object-fit: cover;
    display: block;
  }

  .bi-solution-step__text {
    padding: 0;
    margin: 24px 0 48px;
  }

  .bi-solution-step:last-child .bi-solution-step__text {
    margin-bottom: 60px;
  }

  .bi-solution-step__heading {
    padding: 0 var(--page-px);
  }

  .bi-solution-step__body {
    padding: 0 var(--page-px);
    font-size: var(--fs-body);
  }

  .bi-history {
    padding-bottom: 60px;
  }

  .bi-history__group {
    padding: 20px var(--page-px) 60px;
    flex-direction: column;
    gap: 20px;
  }

  .bi-history__group-title,
  .bi-history__rows {
    width: 100%;
  }

  .bi-history-year {
    flex-direction: column;
    gap: 20px;
  }

  .bi-history-year__content {
    flex-direction: column;
    gap: 10px;
    padding: 0;
  }

  .bi-history-year__media {
    flex: none;
    width: 100%;
  }

  .bi-history-year__events p {
    font-weight: 400;
  }

  .bi-history-year__events {
    gap: 8px;
  }
}