/**
 * Susin Our Strength — scoped to .susin-os only. No global styles.
 */

.susin-os {
  --susin-os-max-width: 1768px;
  --susin-os-color-bg: #ffffff;
  --susin-os-color-primary: #e07020;
  --susin-os-color-heading: #000000;
  --susin-os-color-desc: #444444;
  --susin-os-shadow-card: 0 4px 20px rgba(0, 0, 0, 0.05);
  --susin-os-radius-card: 10px;
  --susin-os-border-card: 1px solid #ebebeb;

  box-sizing: border-box;
  background: var(--susin-os-color-bg);
  color: var(--susin-os-color-heading);
  font-family:
    "Pretendard",
    Pretendard,
    -apple-system,
    BlinkMacSystemFont,
    system-ui,
    sans-serif;
  -webkit-font-smoothing: antialiased;
}

.susin-os,
.susin-os *,
.susin-os *::before,
.susin-os *::after {
  box-sizing: border-box;
}

.susin-os__inner {
  max-width: var(--susin-os-max-width);
  margin: 0 auto;
  padding: 100px 64px 48px;
  display: grid;
  grid-template-columns: minmax(300px, 334px) minmax(0, 1fr);
  column-gap: 46px;
  row-gap: 38px;
  align-items: start;
}

.susin-os__intro {
  position: relative;
  padding-left: 0;
  min-height: 200px;
}

.susin-os__rhombus {
  position: absolute;
  left: 18px;
  top: 50%;
  width: 280px;
  height: 280px;
  background: rgba(224, 112, 32, 0.14);
  background: color-mix(in srgb, var(--susin-os-color-primary) 18%, #ffffff 82%);
  transform: translateY(-50%) rotate(-24deg);
  border-radius: 24px;
  z-index: 0;
  pointer-events: none;
}

.susin-os__intro-copy {
  position: relative;
  z-index: 2;
  max-width: 288px;
}

.susin-os p.susin-os__label {
  margin: 0 0 22px;
  padding: 0;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--susin-os-color-primary);
  line-height: 1.2;
}

.susin-os h2.susin-os__title {
  margin: 0;
  padding: 0;
  font-size: 2.3rem;
  font-weight: 700;
  line-height: 1.32;
  letter-spacing: -0.035em;
  color: var(--susin-os-color-heading);
  border: none;
  background: transparent;
}

.susin-os__title-line {
  display: block;
}

.susin-os__main {
  min-width: 0;
}

.susin-os__viewport {
  overflow-x: auto;
  overflow-y: hidden;
  scroll-behavior: smooth;
  scrollbar-width: none;
  -ms-overflow-style: none;
  margin-right: -8px;
  padding-right: 8px;
}

.susin-os__viewport::-webkit-scrollbar {
  display: none;
}

.susin-os__track {
  display: flex;
  gap: 22px;
  scroll-snap-type: x mandatory;
}

.susin-os article.susin-os__card {
  margin: 0;
  padding: 0;
  flex: 0 0 calc((100% - 66px) / 4);
  min-width: 240px;
  scroll-snap-align: start;
  background: var(--susin-os-color-bg);
  border-radius: var(--susin-os-radius-card);
  border: var(--susin-os-border-card);
  box-shadow: var(--susin-os-shadow-card);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition:
    transform 0.45s cubic-bezier(0.22, 1, 0.36, 1),
    box-shadow 0.45s cubic-bezier(0.22, 1, 0.36, 1),
    border-color 0.35s ease,
    opacity 0.65s cubic-bezier(0.22, 1, 0.36, 1);
}

.susin-os__card-body {
  padding: 22px 20px 18px;
  text-align: left;
}

.susin-os__card-icon {
  width: 56px;
  height: 56px;
  max-width: 100%;
  display: block;
  margin: 0 0 12px;
  padding: 0;
  vertical-align: middle;
  border: none;
}

.susin-os p.susin-os__card-num {
  margin: 0 0 10px;
  padding: 0;
  font-size: 14px;
  font-weight: 700;
  color: var(--susin-os-color-primary);
  letter-spacing: -0.015em;
  line-height: 1.4;
}

.susin-os h3.susin-os__card-title {
  margin: 0 0 12px;
  padding: 0;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.36;
  letter-spacing: -0.028em;
  color: var(--susin-os-color-heading);
  border: none;
  background: transparent;
}

.susin-os h3.susin-os__card-title span {
  display: block;
}

.susin-os p.susin-os__card-desc {
  margin: 0;
  padding: 0;
  font-size: 14px;
  font-weight: 400;
  line-height: 1.55;
  color: var(--susin-os-color-desc);
  letter-spacing: -0.018em;
}

.susin-os__card-media {
  position: relative;
  margin-top: auto;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  flex-shrink: 0;
}

.susin-os__card-media::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 48%;
  background: linear-gradient(to bottom, #ffffff 2%, rgba(255, 255, 255, 0) 100%);
  pointer-events: none;
}

.susin-os img.susin-os__card-img {
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  margin: 0;
  padding: 0;
  border: none;
  vertical-align: middle;
  transition: transform 0.55s cubic-bezier(0.22, 1, 0.36, 1);
}

/* Scroll-driven reveal */
.susin-os-reveal {
  opacity: 0;
  transform: translateY(1.15rem);
  transition:
    opacity 0.65s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.65s cubic-bezier(0.22, 1, 0.36, 1);
}

.susin-os__rhombus.susin-os-reveal {
  transform: translateY(-50%) rotate(-24deg) scale(0.94);
  transition:
    opacity 0.75s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.75s cubic-bezier(0.22, 1, 0.36, 1);
}

.susin-os-reveal--intro {
  transition-delay: 0.08s;
}

.susin-os-reveal.susin-os-is-inview {
  opacity: 1;
}

.susin-os__intro-copy.susin-os-reveal.susin-os-is-inview,
.susin-os__card.susin-os-reveal.susin-os-is-inview {
  transform: translateY(0);
}

.susin-os__rhombus.susin-os-reveal.susin-os-is-inview {
  transform: translateY(-50%) rotate(-24deg) scale(1);
}

@media (prefers-reduced-motion: reduce) {
  .susin-os .susin-os-reveal,
  .susin-os .susin-os-reveal.susin-os-is-inview,
  .susin-os__intro-copy.susin-os-reveal.susin-os-is-inview,
  .susin-os__card.susin-os-reveal.susin-os-is-inview {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .susin-os__rhombus.susin-os-reveal,
  .susin-os__rhombus.susin-os-reveal.susin-os-is-inview {
    opacity: 1;
    transform: translateY(-50%) rotate(-24deg);
    transition: none;
  }

  .susin-os article.susin-os__card {
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
  }

  .susin-os__card.susin-os-reveal.susin-os-is-inview:hover {
    transform: none;
  }

  .susin-os__card.susin-os-reveal.susin-os-is-inview:hover .susin-os__card-img {
    transform: none;
  }

  .susin-os img.susin-os__card-img {
    transition: none;
  }
}

@media (hover: hover) and (prefers-reduced-motion: no-preference) {
  .susin-os__card.susin-os-reveal.susin-os-is-inview:hover {
    transform: translateY(-6px);
    box-shadow: 0 14px 36px rgba(0, 0, 0, 0.09);
    border-color: color-mix(in srgb, var(--susin-os-color-primary) 22%, #ebebeb);
  }

  .susin-os__card.susin-os-reveal.susin-os-is-inview:hover .susin-os__card-img {
    transform: scale(1.045);
  }
}

@media (max-width: 1200px) {
  .susin-os__inner {
    grid-template-columns: 1fr;
    padding: 100px 24px 40px;
  }

  .susin-os__intro {
    padding-left: 0;
  }

  .susin-os__viewport {
    overflow: visible;
    margin-right: 0;
    padding-right: 0;
  }

  .susin-os__track {
    flex-direction: column;
    gap: 20px;
    scroll-snap-type: none;
  }

  .susin-os article.susin-os__card {
    flex: none;
    width: 100%;
    max-width: none;
    min-width: 0;
    scroll-snap-align: none;
  }
}