/* ---------------- HERO ---------------- */
.hero {
  min-height: 55vh;
  background: url("../assets/img/webBanner.png") center/cover no-repeat;
  padding: 80px 0;
}
.hero-content {
  max-width: 1200px;
  padding: 0 20px;
  margin: auto;
}
.hero-content .line {
  width: 80px;
  height: 4px;
  background: var(--primary);
  margin-bottom: 25px;
}
.hero-content h1 {
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  color: #fff;
  line-height: 1.2;
}

/* wrapper */
.sdU {
  padding: 50px 0 70px;
}

.sdU-block {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 18px;
  padding: 38px 0;
  border-bottom: 1px solid rgba(15, 23, 42, 0.06);
}
.sdU-last {
  border-bottom: none;
}

/* left rail */
.sdU-rail {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.sdU-railNum {
  width: 54px;
  height: 54px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  color: #fff;
  background: linear-gradient(90deg, #00c9b7, #2f80ff);
  box-shadow: 0 14px 30px rgba(47, 128, 255, 0.18);
}
.sdU-railLine {
  width: 2px;
  flex: 1;
  background: linear-gradient(
    180deg,
    rgba(47, 128, 255, 0.35),
    rgba(0, 201, 183, 0.05)
  );
  border-radius: 10px;
}

/* head */
.sdU-head .sdU-tag {
  display: inline-block;
  padding: 7px 12px;
  border-radius: 999px;
  border: 1px solid rgba(15, 23, 42, 0.12);
  background: #fff;
  color: #475569;
  font-weight: 800;
  font-size: clamp(15px, 2.1vw, 18px);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.sdU-head p {
  margin: 0 0 18px;
  color: #475569;
  line-height: 1.9;
  font-size: 15px;
}

/* ---------- INTRO IMAGE AREA ---------- */
.sdU-imageCard {
  position: relative;
  width: 100%;
  height: 270px;
  border-radius: 10px;
  overflow: hidden;
  background: linear-gradient(
    135deg,
    rgba(0, 201, 183, 0.18),
    rgba(47, 128, 255, 0.18)
  );
  border: 1px solid rgba(15, 23, 42, 0.1);
  box-shadow: 0 14px 40px rgba(15, 23, 42, 0.08);
}

.sdU-imageCard img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}

@media (hover: hover) {
  .sdU-imageCard:hover img {
    transform: scale(1.05);
  }
}

@media (max-width: 992px) {
  .sdU-visual {
    flex-direction: column;
  }
  .sdU-imageCard {
    height: 220px;
  }
}

@media (max-width: 576px) {
  .sdU-imageCard {
    height: 200px;
  }
}

/* INTRO grid */
.sdU-introGrid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 14px;
  align-items: start;
}
.sdU-copy p {
  margin: 0 0 14px;
  color: #475569;
  font-size: 15px;
  line-height: 1.9;
}
.sdU-callout {
  border: 1px solid rgba(15, 23, 42, 0.12);
  background: #f8fafc;
  border-radius: 10px;
  padding: 16px;
}
.sdU-callout h4 {
  margin: 0 0 10px;
  color: #0f172a;
  font-size: 16px;
}
.sdU-callout ul {
  margin: 0;
  padding-left: 18px;
  color: #475569;
  line-height: 1.9;
  font-size: 14px;
}

/* WHY CHOOSE cards */
.sdU-cards {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 14px;
}
.sdU-card {
  grid-column: span 4;
  background: linear-gradient(90deg, #00c9b7d4, #2f80ff91);
  border-radius: 10px;
  padding: 18px 16px;
  box-shadow: 0 10px 26px rgba(15, 23, 42, 0.06);
  position: relative;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.sdU-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 26px rgba(15, 23, 42, 0.1);
}
.sdU-card.wide {
  grid-column: span 8;
}

.sdU-ico {
  width: 44px;
  height: 44px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  color: #0f172a;
  font-weight: 900;
  margin-bottom: 10px;
}
.sdU-card h4 {
  margin: 0 0 8px;
  color: #fff;
  font-size: 16px;
}
.sdU-card p {
  margin: 0;
  color: #fff;
  line-height: 1.85;
  font-size: 14px;
}

/* ---------- APPROACH zig-zag ---------- */
.sdU-steps {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 14px;
  align-items: stretch;
}
.sdU-step {
  border: 1px solid rgba(15, 23, 42, 0.12);
  background: #fff;
  border-radius: 10px;
  padding: 18px 16px;
  box-shadow: 0 10px 26px rgba(15, 23, 42, 0.06);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-sizing: border-box;
}
.sdU-step:nth-child(odd) {
  grid-column: 1 / span 6;
  /* margin-left: 18px; */
}
.sdU-step:nth-child(even) {
  grid-column: 7 / span 6;
  /* margin-right: 18px; */
}
.sdU-step:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 26px rgba(15, 23, 42, 0.1);
}
.sdU-stepTop {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}
.sdU-stepNum {
  width: 38px;
  height: 38px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 900;
  background: linear-gradient(90deg, #00c9b7, #2f80ff);
}
.sdU-step h4 {
  margin: 0;
  color: #0f172a;
  font-size: 16px;
}
.sdU-step p {
  margin: 0;
  color: #475569;
  font-size: 14px;
  line-height: 1.85;
}

/* FUTURE cards */
.sdU-futureGrid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 14px;
}
.sdU-fCard {
  grid-column: span 3;
  border: 1px solid rgba(15, 23, 42, 0.1);
  background: #fff;
  border-radius: 10px;
  padding: 18px 16px;
  box-shadow: 0 10px 26px rgba(15, 23, 42, 0.06);
  position: relative;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.sdU-fCard:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 26px rgba(15, 23, 42, 0.1);
}

.sdU-fCard::before {
  content: "";
  position: absolute;
  left: 16px;
  top: 12px;
  width: 56px;
  height: 3px;
  border-radius: 999px;
  background: linear-gradient(90deg, #00c9b7, #2f80ff);
}
.sdU-fCard h4 {
  margin: 14px 0 8px;
  color: #0f172a;
  font-size: 16px;
}
.sdU-fCard p {
  margin: 0;
  color: #475569;
  font-size: 14px;
  line-height: 1.85;
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 992px) {
  .sdU-block {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .sdU-rail {
    flex-direction: row;
    justify-content: flex-start;
    gap: 12px;
  }
  .sdU-railLine {
    height: 2px;
    width: 100%;
  }
  .sdU-introGrid {
    grid-template-columns: 1fr;
  }

  .sdU-card {
    grid-column: span 6;
  }
  .sdU-step {
    grid-column: 1 / -1 !important;
    margin-left: 0 !important;
    margin-right: 0 !important;
  }

  .sdU-fCard {
    grid-column: span 6;
  }
}

@media (max-width: 576px) {
  .sdU-card {
    grid-column: 1 / -1;
  }
  .sdU-fCard {
    grid-column: 1 / -1;
  }
}

/* ===================== SCROLL REVEAL ANIMATION ===================== */
@media (prefers-reduced-motion: reduce) {
  .sdU [data-anim] {
    opacity: 1 !important;
    transform: none !important;
    filter: none !important;
    transition: none !important;
  }
}

.sdU [data-anim]{
  opacity: 0;
  transform: translateY(18px);
  filter: blur(2px);
  transition: opacity 650ms ease, transform 650ms ease, filter 650ms ease;
  will-change: opacity, transform, filter;
}

.sdU [data-anim].is-in{
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
}

.sdU [data-anim="fade-left"] { transform: translateX(-18px); }
.sdU [data-anim="fade-right"] { transform: translateX(18px); }
.sdU [data-anim="pop"] { transform: translateY(14px) scale(0.98); }
.sdU [data-anim].is-in[data-anim="pop"] { transform: translateY(0) scale(1); }