.contact-page {
  min-height: calc(100svh - var(--header-height));
  overflow: visible;
}

.contact-page::before {
  opacity: 0.14;
}

.contact-rails {
  top: 0;
  bottom: 0;
}

.contact-layout {
  min-height: calc(100svh - var(--header-height) - 5.8rem);
  padding:
    clamp(4.5rem, 8.5vh, 7.2rem)
    var(--content-right)
    clamp(5rem, 8vh, 7rem)
    calc(var(--content-left) + 1.5rem);
  display: grid;
  grid-template-columns: minmax(0, 0.44fr) minmax(0, 0.56fr);
}

.contact-compose {
  min-width: 0;
  padding-right: clamp(3.2rem, 5.4vw, 6.8rem);
}

.section-label {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  color: var(--accent);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.12em;
}

.section-label span:nth-child(n + 2) {
  color: var(--muted);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.82rem;
  font-weight: 500;
}

.contact-title {
  margin: 0.45rem 0 0;
  font-family: var(--display-cjk);
  font-size: clamp(6.2rem, 9vw, 10rem);
  font-weight: 620;
  line-height: 0.98;
  letter-spacing: -0.08em;
}

.contact-compose .accent-stroke {
  display: block;
  width: 4.5rem;
  height: 3px;
  margin-top: 1.6rem;
  background: var(--accent);
}

.contact-description {
  max-width: 36rem;
  margin: 1.75rem 0 0;
  font-size: clamp(1rem, 1.22vw, 1.28rem);
  line-height: 1.8;
}

.contact-policy {
  margin: 1.1rem 0 0;
  color: var(--muted);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.message-form {
  margin-top: clamp(2.2rem, 3.4vh, 3.2rem);
}

.form-field {
  position: relative;
  display: grid;
  gap: 0.8rem;
  padding-bottom: 1.1rem;
  border-bottom: 1px solid var(--hairline);
}

.form-field + .form-field {
  margin-top: 1.9rem;
}

.form-field label,
.character-counter {
  color: var(--muted);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.76rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.form-field__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.form-field input,
.form-field textarea {
  width: 100%;
  border: 0;
  border-radius: 0;
  outline: 0;
  color: var(--ink);
  background: transparent;
  font: inherit;
  font-size: 1.05rem;
}

.form-field input {
  min-height: 2.4rem;
}

.form-field textarea {
  min-height: clamp(7.8rem, 13.5vh, 10.5rem);
  padding: 0.85rem 0;
  line-height: 1.7;
  resize: vertical;
}

.form-field:focus-within {
  border-bottom-color: var(--accent);
}

.form-field:focus-within label {
  color: var(--accent);
}

.form-honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.form-actions {
  min-height: 4.5rem;
  margin-top: 1.8rem;
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.submit-button {
  min-width: 12.5rem;
  min-height: 3.6rem;
  padding: 0 1.2rem 0 1.45rem;
  border: 1px solid var(--ink);
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  font-size: 0.92rem;
  font-weight: 620;
  letter-spacing: 0.08em;
  transition:
    color 220ms var(--ease-out),
    background-color 220ms var(--ease-out);
}

.submit-button svg {
  width: 1.75rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.4;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform 240ms var(--ease-out);
}

.submit-button:hover,
.submit-button:focus-visible {
  color: var(--paper);
  background: var(--ink);
}

.submit-button:hover svg,
.submit-button:focus-visible svg {
  transform: translateX(0.25rem);
}

.submit-button:disabled {
  cursor: progress;
  opacity: 0.48;
}

.form-status {
  max-width: 24rem;
  min-height: 1.6em;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.6;
}

.form-status.is-success {
  color: var(--accent);
}

.message-stream {
  min-width: 0;
  padding-left: clamp(3rem, 4.8vw, 6rem);
  border-left: 1px solid var(--hairline);
}

.message-stream__heading {
  min-height: 9.1rem;
  padding-bottom: 1.45rem;
  border-bottom: 1px solid var(--ink);
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
}

.message-stream__heading h2 {
  margin: 0.35rem 0 0;
  font-family: var(--display-cjk);
  font-size: clamp(3.7rem, 5.4vw, 6rem);
  font-weight: 620;
  line-height: 1.05;
  letter-spacing: -0.07em;
}

.message-stream__mark {
  padding-bottom: 0.55rem;
  color: var(--muted);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.7rem;
  letter-spacing: 0.26em;
}

.message-list {
  counter-reset: public-message;
}

.message-item {
  position: relative;
  counter-increment: public-message;
  padding: clamp(1.35rem, 2.6vh, 2rem) 0 clamp(1.35rem, 2.6vh, 2rem) 4.8rem;
  border-bottom: 1px solid var(--hairline);
}

.message-item::before {
  content: counter(public-message, decimal-leading-zero);
  position: absolute;
  top: clamp(1.55rem, 2.85vh, 2.2rem);
  left: 0.1rem;
  color: var(--accent);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
}

.message-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1.5rem;
}

.message-nick {
  font-family: var(--display-latin);
  font-size: clamp(1.4rem, 1.75vw, 2rem);
  font-weight: 600;
  line-height: 1.1;
}

.message-region,
.message-time,
.message-reply__label {
  color: var(--muted);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
}

.message-region {
  margin-left: 0.7rem;
}

.message-body,
.message-reply__body {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.message-body {
  margin-top: 0.75rem;
  font-size: 0.98rem;
  line-height: 1.75;
}

.message-reply {
  margin-top: 1rem;
  padding: 0.75rem 0 0.1rem 1rem;
  border-left: 2px solid var(--accent);
}

.message-reply__label {
  margin-bottom: 0.35rem;
  color: var(--accent);
}

.message-reply__body {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

.message-empty {
  min-height: 13rem;
  margin: 0;
  border-bottom: 1px solid var(--hairline);
  display: grid;
  place-items: center;
  color: var(--muted);
  font-size: 0.88rem;
  letter-spacing: 0.06em;
}

.load-more {
  padding-top: 1.4rem;
  text-align: right;
}

.load-more button {
  min-height: 2.8rem;
  padding: 0 1.1rem;
  border: 1px solid var(--hairline);
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  transition:
    color 180ms ease,
    border-color 180ms ease;
}

.load-more button:hover,
.load-more button:focus-visible {
  color: var(--accent);
  border-color: var(--accent);
}

.contact-footer-line {
  min-height: 5.8rem;
  margin: 0 var(--content-right) 0 calc(var(--content-left) + 1.5rem);
  border-top: 1px solid var(--hairline);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  color: var(--accent);
  font-size: 0.92rem;
  letter-spacing: 0.08em;
}

.contact-footer-line span:last-child {
  color: var(--muted);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
}

.contact-footer {
  min-height: 7rem;
  padding: 0 var(--content-right) 0 calc(var(--content-left) + 1.5rem);
  border-top: 1px solid var(--hairline-soft);
  display: flex;
  align-items: center;
  gap: clamp(2rem, 4vw, 5rem);
  font-size: 0.82rem;
}

.contact-footer small {
  font-size: inherit;
}

.contact-footer a {
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-underline-offset: 0.35rem;
}

@media (max-width: 1180px) {
  .contact-layout {
    grid-template-columns: minmax(0, 0.42fr) minmax(0, 0.58fr);
  }

  .contact-compose {
    padding-right: 2.8rem;
  }

  .message-stream {
    padding-left: 2.8rem;
  }

  .contact-title {
    font-size: clamp(5.7rem, 8.4vw, 7.2rem);
  }
}

@media (max-width: 860px) {
  .contact-layout {
    min-height: auto;
    padding: 3.5rem var(--content-right) 4rem var(--content-left);
    display: block;
  }

  .contact-compose {
    padding-right: 0;
  }

  .contact-title {
    margin-top: 0.7rem;
    font-size: clamp(5.5rem, 27vw, 8rem);
  }

  .contact-description {
    max-width: 31rem;
  }

  .message-form {
    margin-top: 2.7rem;
  }

  .message-stream {
    margin-top: 5.5rem;
    padding-left: 0;
    border-left: 0;
  }

  .message-stream__heading {
    min-height: 7.7rem;
  }

  .message-stream__heading h2 {
    font-size: clamp(3.8rem, 18vw, 5.5rem);
  }

  .contact-footer-line {
    min-height: 5.2rem;
    margin: 0 var(--content-right) 0 var(--content-left);
  }

  .contact-footer {
    padding: 1.8rem var(--content-right) 1.8rem var(--content-left);
    flex-wrap: wrap;
    row-gap: 1rem;
  }
}

@media (max-width: 520px) {
  .contact-layout {
    padding-top: 2.7rem;
  }

  .contact-title {
    font-size: clamp(4.9rem, 25vw, 6.2rem);
  }

  .contact-description {
    font-size: 0.96rem;
  }

  .form-actions {
    align-items: flex-start;
    flex-direction: column;
  }

  .submit-button {
    width: 100%;
  }

  .message-stream__mark,
  .contact-footer-line span:last-child {
    display: none;
  }

  .message-item {
    padding-left: 3.2rem;
  }

  .message-head {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.45rem;
  }

  .message-region {
    display: block;
    margin: 0.3rem 0 0;
  }

  .contact-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  .submit-button,
  .submit-button svg {
    transition: none;
  }
}