.problem {
  width: 100%;
  background: var(--surface-inverse);
  padding: var(--space-96) 0 var(--space-96);
  position: relative;
  overflow: hidden;
}

.problem::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgb(var(--accent-rgb) / 0.35), transparent);
}

.problem-container {
  width: 100%;
  max-width: var(--layout-max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.problem-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-48);
  align-items: end;
  padding-bottom: var(--space-64);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.problem-intro-left {
  display: flex;
  flex-direction: column;
  gap: var(--space-24);
}

.problem-eyebrow {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--olive);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.problem-eyebrow::before {
  content: "";
  display: inline-block;
  width: 24px;
  height: 1.5px;
  background: var(--olive);
  flex-shrink: 0;
}

.problem-heading {
  font-size: clamp(2.8rem, 6.5vw, 5.4rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 0.92;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.95);
}

.problem-heading .olive-accent {
  color: var(--olive);
}

.problem-intro-right {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: var(--space-24);
  padding-bottom: 4px;
}

.problem-stat {
  border-left: 2px solid var(--olive);
  padding-left: var(--space-24);
}

.problem-stat-num {
  font-size: clamp(3rem, 6vw, 4.8rem);
  font-weight: 800;
  letter-spacing: -0.05em;
  line-height: 1;
  color: rgba(255, 255, 255, 0.95);
}

.problem-stat-num span {
  color: var(--olive);
}

.problem-stat-label {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.4);
  line-height: 1.5;
  margin-top: 8px;
  max-width: 28ch;
}

.problem-list {
  margin-top: 0;
}

.problem-item {
  display: grid;
  grid-template-columns: 52px 1fr auto;
  align-items: center;
  gap: 0 var(--space-48);
  padding: var(--space-32) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  position: relative;
  transition: padding-left 0.35s ease, background 0.35s ease;
}

.problem-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 2px;
  height: 100%;
  background: var(--olive);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.problem-item:hover {
  padding-left: 18px;
  background: rgba(255, 255, 255, 0.02);
}

.problem-item:hover::before {
  transform: scaleY(1);
}

.problem-index {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: rgba(255, 255, 255, 0.2);
  text-transform: uppercase;
  transition: color 0.3s ease;
}

.problem-item:hover .problem-index {
  color: var(--olive);
}

.problem-body {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.problem-title {
  font-size: clamp(1rem, 2vw, 1.4rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  color: rgba(255, 255, 255, 0.88);
  line-height: 1.2;
  transition: color 0.25s ease;
}

.problem-item:hover .problem-title {
  color: rgba(255, 255, 255, 0.98);
}

.problem-desc {
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.35);
  line-height: 1.65;
  max-width: 52ch;
  transition: color 0.25s ease;
}

.problem-item:hover .problem-desc {
  color: rgba(255, 255, 255, 0.5);
}

.problem-tag {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--olive);
  border: 1px solid rgb(var(--accent-rgb) / 0.3);
  padding: 7px 14px;
  white-space: nowrap;
  transition: border-color 0.25s ease, background 0.25s ease;
}

.problem-item:hover .problem-tag {
  border-color: rgb(var(--accent-rgb) / 0.6);
  background: rgb(var(--accent-rgb) / 0.08);
}

.problem-close {
  margin-top: var(--space-64);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-32);
  flex-wrap: wrap;
}

.problem-close-copy {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.problem-close-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.3);
}

.problem-close-line {
  font-size: clamp(1.2rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.9);
}

.problem-close-line .olive-accent {
  color: var(--olive);
}

@media (max-width: 900px) {
  .problem-intro {
    grid-template-columns: 1fr;
    gap: var(--space-48);
  }

  .problem-stat {
    max-width: 360px;
  }

  .problem-item {
    grid-template-columns: 40px 1fr;
    grid-template-rows: auto auto;
    gap: 0 var(--space-24);
  }

  .problem-tag {
    grid-column: 2;
    justify-self: start;
    margin-top: 12px;
  }
}

@media (max-width: 600px) {
  .problem {
    padding: var(--space-64) 0;
  }

  .problem-intro {
    padding-bottom: var(--space-48);
  }

  .problem-item {
    padding: var(--space-24) 0;
    gap: 0 var(--space-16);
  }

  .problem-item:hover {
    padding-left: 12px;
  }

  .problem-close {
    margin-top: var(--space-48);
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-24);
  }

  .problem-close .btn {
    width: 100%;
    text-align: center;
  }
}