.nav--solid {
  background: rgba(250, 247, 243, 0.95);
  backdrop-filter: blur(10px);
  padding: 1rem 0;
  box-shadow: 0 1px 0 var(--c-line);
}

.page-head {
  padding: 12rem 0 4rem;
  background: linear-gradient(180deg, var(--c-bg-3) 0%, var(--c-bg) 100%);
  text-align: center;
}

.section--treatments { padding-top: 2rem; }

.treatments {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.tr-cat {
  background: var(--c-card);
  overflow: hidden;
}

.tr-cat__head {
  display: flex;
  align-items: stretch;
  cursor: pointer;
  background: var(--c-card);
  transition: background 0.2s;
}
.tr-cat__head:hover { background: var(--c-bg-2); }

.tr-cat__media {
  flex-shrink: 0;
  width: 180px;
  background: var(--c-bg-2);
  overflow: hidden;
}
.tr-cat__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.tr-cat__head-body {
  flex: 1;
  padding: 1.75rem 2rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.35rem;
}

.tr-cat__title {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 1.65rem;
  color: var(--c-text);
  margin: 0;
  line-height: 1.2;
}

.tr-cat__intro {
  font-size: 0.95rem;
  color: var(--c-text-2);
  line-height: 1.6;
  margin: 0;
}

.tr-cat__toggle {
  flex-shrink: 0;
  align-self: center;
  margin-right: 2rem;
  width: 44px;
  height: 44px;
  border: 1px solid var(--c-line);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--c-accent-2);
  transition: transform 0.3s, background 0.2s;
}
.tr-cat.is-open .tr-cat__toggle { transform: rotate(45deg); background: var(--c-accent-3); }

.tr-cat__body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.tr-cat.is-open .tr-cat__body { max-height: 4000px; }

.tr-list {
  padding: 0 2rem 2.5rem;
  margin: 0;
  list-style: none;
}

.tr-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem 2rem;
  padding: 1.25rem 0;
  border-top: 1px solid var(--c-line);
  align-items: baseline;
}
.tr-item:first-child { border-top: 0; padding-top: 0.5rem; }

.tr-item__main {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}
.tr-item__name {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 1.15rem;
  color: var(--c-text);
}
.tr-item__duration {
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-muted);
}
.tr-item__desc {
  font-size: 0.92rem;
  color: var(--c-text-2);
  line-height: 1.6;
  margin-top: 0.4rem;
}
.tr-item__price {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  color: var(--c-accent-2);
  font-weight: 500;
  white-space: nowrap;
  text-align: right;
}

.tr-cat__external {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 2rem 2.5rem;
  padding: 0.85rem 1.5rem;
  background: var(--c-text);
  color: #fff;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 500;
  transition: background 0.25s;
}
.tr-cat__external:hover { background: var(--c-accent-2); }

@media (max-width: 720px) {
  .tr-cat__head { flex-direction: column; }
  .tr-cat__media { width: 100%; aspect-ratio: 16 / 9; }
  .tr-cat__head-body { padding: 1.5rem 1.5rem 0.5rem; }
  .tr-cat__toggle { margin: 0 1.5rem 1.5rem; align-self: flex-end; }
  .tr-list { padding: 0 1.5rem 2rem; }
  .tr-item { grid-template-columns: 1fr; gap: 0.5rem; }
  .tr-item__price { text-align: left; }
}