/* ============================================
   ARICA — R&D Page
   ============================================ */

.rd-page {
  --rd-pad: clamp(1.5rem, 3vw, 2.25rem);
  overflow-x: hidden;
}

.rd-hero {
  position: relative;
  min-height: 0;
  overflow: hidden;
}

.rd-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.rd-hero__bg-base {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #010728 0%, #0a2560 45%, #1378f3 100%);
}

.rd-hero__bg-glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 55% 70% at 85% 40%, rgba(76, 147, 228, 0.4) 0%, transparent 65%);
  pointer-events: none;
}

.rd-hero__bg-texture {
  position: absolute;
  inset: 0;
  opacity: 0.12;
  mix-blend-mode: overlay;
}

.rd-hero__bg-texture img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.rd-hero__inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(1.25rem, 3vw, 2.5rem);
  align-items: center;
  padding: calc(var(--header-h, 80px) + 1.25rem) 0 2rem;
  min-height: 0;
}

.rd-hero__text {
  color: #fff;
}

.rd-hero__tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 1rem;
  padding: 0.35rem 0.85rem;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
}

.rd-hero__heading {
  font-size: clamp(2rem, 4.5vw, 3.35rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin: 0 0 1rem;
}

.rd-hero__desc {
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.85);
  max-width: 36rem;
  margin: 0;
}

.rd-hero__visual {
  display: flex;
  justify-content: center;
}

.rd-hero__visual img {
  width: min(100%, 420px);
  height: auto;
  max-height: 340px;
  object-fit: cover;
  border-radius: 1.25rem;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

.rd-breadcrumb {
  background: #f7f9fc;
  border-bottom: 1px solid rgba(15, 40, 80, 0.08);
  padding: 0.6rem 0;
}

.rd-breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.9rem;
  color: #5b6b85;
}

.rd-breadcrumb__list a {
  color: #1378f3;
  text-decoration: none;
}

.rd-breadcrumb__list a:hover {
  text-decoration: underline;
}

.rd-breadcrumb__sep {
  opacity: 0.5;
}

.rd-breadcrumb__current {
  color: #0a1f44;
  font-weight: 600;
}

.rd-intro {
  position: relative;
  padding: var(--rd-pad) 0;
  background: #fff;
  overflow: hidden;
}

.rd-intro__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.rd-intro__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(40px);
  opacity: 0.35;
}

.rd-intro__orb--1 {
  width: 280px;
  height: 280px;
  background: #9ec5ff;
  top: -80px;
  right: -40px;
}

.rd-intro__orb--2 {
  width: 220px;
  height: 220px;
  background: #c8e0ff;
  bottom: -60px;
  left: -30px;
}

.rd-intro__inner {
  position: relative;
  z-index: 1;
  max-width: 820px;
}

.rd-intro__title {
  font-size: clamp(1.75rem, 3vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #0a1f44;
  margin: 0.75rem 0 1.5rem;
}

.rd-intro__copy p {
  font-size: 1.05rem;
  line-height: 1.75;
  color: #3d4f6a;
  margin: 0 0 1.15rem;
}

.rd-intro__copy p:last-child {
  margin-bottom: 0;
}

.rd-excellence {
  padding: var(--rd-pad) 0;
  background: linear-gradient(180deg, #f4f8fd 0%, #eef4fb 100%);
}

.rd-excellence__header {
  max-width: 820px;
  margin-bottom: 2rem;
}

.rd-excellence__title {
  font-size: clamp(1.75rem, 3vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #0a1f44;
  margin: 0.75rem 0 1rem;
}

.rd-excellence__lead {
  font-size: 1.05rem;
  line-height: 1.75;
  color: #3d4f6a;
  margin: 0;
}

.rd-excellence__subtitle {
  font-size: 1.15rem;
  font-weight: 700;
  color: #0a1f44;
  margin: 0 0 1.25rem;
}

.rd-capabilities {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.rd-capabilities li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.85rem;
  align-items: flex-start;
  background: #fff;
  border: 1px solid rgba(15, 40, 80, 0.08);
  border-radius: 14px;
  padding: 1rem 1.15rem;
  font-size: 1rem;
  line-height: 1.6;
  color: #2f405a;
  box-shadow: 0 8px 24px rgba(10, 40, 90, 0.04);
}

.rd-capabilities__icon {
  display: inline-flex;
  width: 1.5rem;
  height: 1.5rem;
  color: #1378f3;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.rd-capabilities__icon svg {
  width: 100%;
  height: 100%;
}

.rd-closing {
  margin-top: 2.25rem;
  padding: 1.5rem 1.6rem;
  border-radius: 16px;
  background: linear-gradient(135deg, #010728 0%, #0a2560 50%, #1378f3 100%);
  color: #fff;
}

.rd-closing p {
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.92);
}

@media (max-width: 900px) {
  .rd-hero__inner {
    grid-template-columns: 1fr;
    text-align: center;
    padding-bottom: 3rem;
  }

  .rd-hero__desc {
    margin-left: auto;
    margin-right: auto;
  }

  .rd-hero__visual img {
    max-height: 260px;
  }
}

@media (max-width: 640px) {
  .rd-capabilities li {
    padding: 0.9rem 1rem;
  }
}