.letter-card {
  position: relative;
  overflow: hidden;
  border-radius: 22px;
  background: var(--card-solid);
  box-shadow: var(--shadow);
}

.letter-card__inner {
  position: relative;
  z-index: 1;
  padding: 20px;
}

.letter-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 14px;
}

.letter-card__style {
  font-size: 11px;
  font-weight: 700;
  opacity: 0.75;
}

.letter-card__date {
  font-size: 11px;
  opacity: 0.7;
}

.letter-card__title {
  margin: 0 0 9px;
  font-size: 21px;
  line-height: 1.3;
}

.letter-card__body {
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 14px;
  line-height: 1.85;
}

.letter-card__from {
  margin-top: 18px;
  text-align: right;
  font-size: 12px;
  opacity: 0.75;
}

.letter-card__envelope {
  margin: -3px 0 12px;
  color: currentColor;
  font-size: 13px;
  font-style: italic;
  opacity: 0.78;
}

.letter-card--compact .letter-card__inner {
  padding: 16px;
}

.letter-card--compact .letter-card__body {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.style-pink-love {
  color: #62344b;
  background: linear-gradient(135deg, #fff2f7, #ffe2ed);
  border: 1px solid #ffc7dc;
}

.style-moonlight {
  color: #3b466e;
  background: linear-gradient(135deg, #f0f3ff, #e6f0ff);
  border: 1px solid #d3dcff;
}

.style-vintage {
  color: #6b4c33;
  background: #fff8e8;
  border: 2px dashed #d8b479;
  border-radius: 10px;
}

.style-vintage .letter-card__title,
.style-vintage .letter-card__from {
  font-family: Georgia, "Songti SC", serif;
}

.style-website {
  color: #e8edf5;
  background: radial-gradient(circle at 90% 0%, #28313f, #11151c 58%);
  border: 1px solid #2d3644;
}

.style-starry {
  color: #ece7ff;
  background:
    radial-gradient(circle at 15% 18%, rgba(255, 255, 255, 0.85) 0 1px, transparent 2px),
    radial-gradient(circle at 72% 8%, rgba(255, 255, 255, 0.7) 0 1px, transparent 2px),
    linear-gradient(135deg, #171630, #3a2d68);
  border: 1px solid #4a3f78;
}

.style-spring {
  color: #405a42;
  background: linear-gradient(135deg, #f5ffe9, #fff9d9);
  border: 1px solid #dce9b5;
}

.style-0817 {
  color: #f9f0df;
  background: linear-gradient(145deg, #242737, #11131b 74%);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 5px 5px 24px 5px;
}

.style-0817::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.09;
  pointer-events: none;
  background-image:
    radial-gradient(circle at 20% 15%, #fff 0 1px, transparent 1px),
    radial-gradient(circle at 70% 60%, #fff 0 1px, transparent 1px);
  background-size: 17px 19px, 29px 31px;
}

.style-0817::after {
  content: "";
  position: absolute;
  right: -22px;
  bottom: -35px;
  width: 140px;
  height: 140px;
  border: 1px solid currentColor;
  border-radius: 50%;
  opacity: 0.13;
}

.style-0817 .letter-card__style,
.style-0817 .letter-card__title,
.style-0817 .letter-card__from {
  font-family: Georgia, "Songti SC", serif;
}