.protocol-page {
  min-height: 100vh;
  background: #fff;
  padding-bottom: 64rpx;
}

.protocol-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: #fff;
  padding-top: env(safe-area-inset-top);
  border-bottom: 1rpx solid var(--border, #d8f3e5);
}

.protocol-nav__bar {
  display: flex;
  align-items: center;
  height: 88rpx;
  padding: 0 16rpx;
}

.protocol-nav__back,
.protocol-nav__placeholder {
  width: 72rpx;
  height: 72rpx;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.protocol-nav__back {
  cursor: pointer;
}

.protocol-nav__back--hover {
  opacity: 0.55;
}

.protocol-nav__back-icon {
  font-size: 56rpx;
  line-height: 1;
  color: #0f291e;
  font-weight: 300;
  margin-top: -4rpx;
}

.protocol-nav__title {
  flex: 1;
  text-align: center;
  font-size: 32rpx;
  font-weight: 600;
  color: #0f291e;
}

.protocol-body {
  padding: 24rpx 40rpx 48rpx;
}

.protocol-meta {
  margin-bottom: 28rpx;
  font-size: 24rpx;
  color: var(--text-muted, #5f7a6d);
}

.protocol-section {
  margin-bottom: 36rpx;
}

.protocol-section__title {
  margin-bottom: 16rpx;
  font-size: 30rpx;
  font-weight: 650;
  color: var(--text-primary, #0f291e);
  line-height: 1.4;
}

.protocol-section__p {
  margin-bottom: 12rpx;
  font-size: 26rpx;
  color: var(--text-primary, #0f291e);
  line-height: 1.7;
  text-align: justify;
}