.sincere-wrapper {
  max-width: 650px;
  width: 100%;
  padding: 20px;
}

.letter-title {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  color: var(--accent-cyan);
  margin-bottom: 30px;
  letter-spacing: 1px;
}

.letter-body {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  line-height: 1.8;
  color: var(--text-main);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.fade-paragraph {
  opacity: 0;
  transform: translateY(10px);
  animation: lineFadeIn 0.8s forwards;
}

.fade-paragraph:nth-child(1) { animation-delay: 0.3s; }
.fade-paragraph:nth-child(2) { animation-delay: 1.2s; }
.fade-paragraph:nth-child(3) { animation-delay: 2.1s; }
.fade-paragraph:nth-child(4) { animation-delay: 3.0s; }
.fade-paragraph:nth-child(5) { animation-delay: 3.9s; }

.highlight-quote {
  font-style: italic;
  color: var(--accent-purple);
  border-left: 2px solid var(--accent-purple);
  padding-left: 15px;
  margin-top: 10px;
}

.signature {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--accent-cyan);
  text-align: right;
  margin-top: 25px;
  opacity: 0;
  animation: lineFadeIn 0.8s forwards;
  animation-delay: 4.8s;
}

.action-next {
  margin-top: 40px;
  text-align: center;
  opacity: 0;
  animation: lineFadeIn 0.8s forwards;
  animation-delay: 5.5s;
}