.subtitle {
  max-width: 780px;
}

header {
  margin-bottom: 34px;
}

main {
  width: min(1100px, calc(100% - 32px));
}

.info {
  margin: 0 0 24px;
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: 24px;
  background: rgba(23, 27, 37, .72);
  color: var(--muted);
  line-height: 1.65;
}

.info strong {
  color: var(--text);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 24px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(38, 50, 71, .85);
  color: var(--accent);
  text-decoration: none;
  font-weight: 750;
  font-size: .95rem;
  transition: border-color .15s ease, background .15s ease, transform .15s ease;
}

.button:hover {
  transform: translateY(-2px);
  border-color: var(--border-hover);
  background: rgba(52, 69, 98, .95);
}

.pdf-shell {
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 28px;
  background: rgba(23, 27, 37, .90);
  box-shadow: 0 18px 42px rgba(0, 0, 0, .28);
}

.pdf-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding: 8px 8px 16px;
  color: var(--muted);
  font-size: .92rem;
}

.pdf-toolbar strong {
  color: var(--text);
}

.pdf-frame {
  width: 100%;
  height: min(82vh, 860px);
  border: 1px solid #30384a;
  border-radius: 18px;
  background: #10131a;
  overflow: hidden;
}

.pdf-frame iframe {
  width: 100%;
  height: 100%;
  border: 0;
  background: #10131a;
}

.fallback {
  padding: 20px;
  color: var(--muted);
  line-height: 1.6;
}

.fallback a {
  color: var(--accent);
}

@media (max-width: 700px) {
  main {
    width: min(100% - 24px, 1100px);
  }

  .pdf-frame {
    height: 70vh;
  }
}