.newsletter {
  margin: 48px 0;
  border: 1px solid var(--border-medium);
  border-top: 4px solid var(--signal-accent);
  border-radius: 0;
  background: var(--bg-secondary);
  color: var(--text-primary);
  box-shadow: 4px 4px 0 var(--shadow-color);
  scroll-margin-top: 32px;
}

.newsletter__shell {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  align-items: center;
  gap: clamp(1.1rem, 3vw, 2.8rem);
  padding: clamp(1.25rem, 3vw, 2.25rem);
}

.newsletter__intro,
.newsletter__signup {
  min-width: 0;
}

.newsletter .newsletter__heading {
  margin: 0;
  color: var(--text-primary);
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.newsletter__heading span {
  color: var(--brand-ink);
  text-decoration: underline;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.14em;
}

.newsletter .newsletter__description {
  max-width: 36ch;
  margin: 0.9rem 0 0;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: clamp(1rem, 1.8vw, 1.15rem);
  line-height: 1.7;
}

.newsletter__signup {
  width: 100%;
  padding: clamp(1rem, 2.4vw, 1.4rem);
  border: 1px solid var(--border-medium);
  border-top: 3px solid var(--brand-ink);
  background: var(--bg-tertiary);
  box-shadow: 4px 4px 0 var(--shadow-color);
  text-align: left;
}

.newsletter .newsletter__affiliation {
  margin: 0.65rem 0 0;
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  line-height: 1.6;
}

.newsletter .newsletter__title {
  margin: 0;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: clamp(1.15rem, 2.3vw, 1.35rem);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.02em;
}

.newsletter .newsletter__promo {
  max-width: 46ch;
  margin: 0.55rem 0 0;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  line-height: 1.5;
}

.newsletter__form {
  margin: 16px 0 0;
}

.newsletter__label {
  display: block;
  margin-bottom: 8px;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 500;
}

.newsletter__fields {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: stretch;
}

.newsletter__input {
  width: 100%;
  min-width: 0;
  min-height: 52px;
  padding: 12px 16px;
  border: 1px solid var(--border-medium);
  border-radius: 0;
  background: var(--bg-primary);
  color: var(--text-primary);
  caret-color: var(--cyan);
  font-family: var(--font-mono);
  font-size: max(16px, 0.875rem);
  line-height: 1.5;
  transition: border-color 150ms;
}

.newsletter__input::placeholder {
  color: var(--text-muted);
  opacity: 1;
}

.newsletter__input[aria-invalid="true"] {
  border-color: var(--error);
}

.newsletter .newsletter__button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 52px;
  margin: 0 0 0 -1px;
  padding: 12px 16px;
  border: 1px solid var(--accent-ink);
  border-radius: 0;
  background: var(--accent-fill);
  color: var(--accent-ink);
  box-shadow: 2px 2px 0 var(--shadow-color);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1.5;
  cursor: pointer;
  transition: box-shadow 150ms;
}

.newsletter__button svg {
  flex: 0 0 16px;
  stroke-linecap: square;
  stroke-linejoin: miter;
}

.newsletter .newsletter__button:hover:not(:disabled) {
  box-shadow: 4px 4px 0 var(--shadow-color);
}

.newsletter .newsletter__button:active:not(:disabled) {
  box-shadow: none;
}

.newsletter .newsletter__input:focus-visible,
.newsletter .newsletter__button:focus-visible {
  position: relative;
  z-index: 1;
  outline: 3px solid var(--cyan);
  outline-offset: 3px;
}

.newsletter__input:disabled,
.newsletter .newsletter__button:disabled {
  opacity: 0.7;
  cursor: wait;
}

.newsletter .newsletter__status,
.newsletter .newsletter__error,
.newsletter .newsletter__fallback {
  margin: 12px 0 0;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  line-height: 1.6;
  overflow-wrap: anywhere;
}

.newsletter .newsletter__status {
  color: var(--text-secondary);
}

.newsletter .newsletter__status[data-state="success"] {
  color: var(--success);
}

.newsletter .newsletter__status:empty {
  margin: 0;
}

.newsletter .newsletter__error {
  color: var(--error);
}

.newsletter .newsletter__fallback {
  color: var(--text-secondary);
}

@media (max-width: 900px) {
  .newsletter__shell {
    grid-template-columns: minmax(0, 1fr);
  }

  .newsletter .newsletter__description {
    max-width: 55ch;
  }
}

@media (max-width: 640px) {
  .newsletter__shell {
    padding: 16px;
  }

  .newsletter__intro {
    text-align: center;
  }

  .newsletter .newsletter__description {
    margin-right: auto;
    margin-left: auto;
  }

  .newsletter__fields {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
  }

  .newsletter .newsletter__button {
    margin-left: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .newsletter__input,
  .newsletter .newsletter__button {
    transition: none;
  }
}