/* =============================================
   NIXBIT — WHY US
   ============================================= */

.why-us {
  padding: var(--section-pad);
  background: var(--bg);
}

.why-layout {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 5rem;
  align-items: start;
}

.why-right {
  position: relative;
}

.why-scroll-container {
  height: 480px;
  overflow: hidden;
  position: relative;
}
.why-scroll-container::before,
.why-scroll-container::after {
  content: '';
  position: absolute;
  left: 0; right: 0;
  height: 60px;
  z-index: 2;
  pointer-events: none;
}
.why-scroll-container::before {
  top: 0;
  background: linear-gradient(to bottom, var(--bg), transparent);
}
.why-scroll-container::after {
  bottom: 0;
  background: linear-gradient(to top, var(--bg), transparent);
}

.why-scroll {
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.why-card {
  background: var(--bg-1);
  padding: 28px 32px;
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
  cursor: pointer;
  position: relative;
}
.why-card:last-child { border-bottom: none; }
.why-card.active {
  background: var(--bg-2);
  border-left: 3px solid var(--accent);
  background-image: linear-gradient(var(--bg-2), var(--bg-2)), var(--grad);
  background-origin: border-box;
}
.why-card-num {
  font-family: var(--font-display);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--text-dim);
  margin-bottom: 8px;
}
.why-card h4 {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}
.why-card p {
  font-size: 0.87rem;
  color: var(--text-muted);
  line-height: 1.65;
  display: none;
}
.why-card.active p { display: block; }

.why-scroll-nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
  position: absolute;
  right: -48px;
  top: 50%;
  transform: translateY(-50%);
}
.why-scroll-nav button {
  width: 32px; height: 32px;
  border-radius: 8px;
  background: var(--bg-1);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.why-scroll-nav button:hover {
  background: var(--grad);
  color: #fff;
  border-color: transparent;
}

/* ── LIGHT MODE ── */
html.light .why-scroll-container::before { background: linear-gradient(to bottom, var(--bg), transparent); }
html.light .why-scroll-container::after { background: linear-gradient(to top, var(--bg), transparent); }