.page-contact {
  --contact-gutter: clamp(20px, 5vw, 48px);
  --contact-document: #0B0E12;
  --contact-sheet: #F4EBD9;
  position: relative;
  box-sizing: border-box;
  min-height: 100vh;
  background:
    radial-gradient(1100px 420px at 90% -10%, rgba(155, 92, 255, 0.13), transparent 62%),
    radial-gradient(700px 260px at -5% 18%, rgba(183, 240, 75, 0.05), transparent 55%),
    var(--bg-deep);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.75;
  overflow-wrap: break-word;
}

.page-contact *,
.page-contact *::before,
.page-contact *::after {
  box-sizing: border-box;
}

.page-contact::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0 2px,
    rgba(244, 235, 217, 0.014) 2px 3px
  );
}

.page-contact > * {
  position: relative;
  z-index: 1;
}

.page-contact ::selection {
  background: var(--acid);
  color: var(--bg-deep);
}

.page-contact [id] {
  scroll-margin-top: calc(var(--header-h) + 14px);
}

.page-contact img {
  max-width: 100%;
  height: auto;
}

.page-contact .content-container {
  max-width: var(--container-w);
  margin-inline: auto;
  padding-inline: var(--contact-gutter);
}

.page-contact h1,
.page-contact h2,
.page-contact h3 {
  font-family: var(--font-display);
  text-transform: uppercase;
}

.page-contact h2 {
  margin: 0 0 6px;
  font-size: clamp(1.35rem, 2.6vw, 2rem);
  line-height: 1.12;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-contact .uid-index {
  flex: 0 0 auto;
  padding: 3px 7px;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  line-height: 1.4;
  letter-spacing: 0.1em;
  color: var(--acid);
  border: 1px solid rgba(183, 240, 75, 0.38);
  background: rgba(183, 240, 75, 0.06);
}

.page-contact .data-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 9px;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  line-height: 1;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--rock);
  border: 1px solid var(--border-mid);
  border-radius: 2px;
  background: rgba(11, 14, 18, 0.5);
}

.page-contact .data-tag--acid {
  color: var(--bg-deep);
  border-color: var(--acid);
  background: var(--acid);
}

.page-contact .data-tag--purple {
  color: var(--paper);
  border-color: rgba(155, 92, 255, 0.55);
  background: rgba(155, 92, 255, 0.16);
}

/* 面包屑 */
.page-contact .breadcrumbs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 26px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--rock);
}

.page-contact .crumb {
  color: var(--rock);
  text-decoration: none;
  transition: color var(--t-fast);
}

.page-contact .crumb:hover,
.page-contact .crumb:focus-visible {
  color: var(--acid);
}

.page-contact .crumb-sep {
  color: var(--purple);
}

.page-contact .crumb-current {
  color: var(--paper);
  cursor: default;
}

/* 首屏 */
.page-contact .contact-hero {
  position: relative;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--acid), var(--purple) 55%, transparent);
  opacity: 0.65;
}

.page-contact .contact-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  padding-block: 34px 44px;
}

.page-contact .contact-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.page-contact .contact-hero h1 {
  margin: 0 0 18px;
  font-size: clamp(2rem, 6vw, 3.5rem);
  line-height: 1.02;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-contact .contact-hero__lead {
  max-width: 36em;
  margin: 0 0 16px;
  font-size: 0.88rem;
  line-height: 1.8;
  color: rgba(244, 235, 217, 0.88);
}

.page-contact .contact-hero__lead a {
  color: var(--acid);
  text-decoration: none;
  border-bottom: 1px dashed rgba(183, 240, 75, 0.5);
  transition: color var(--t-fast), border-color var(--t-fast);
}

.page-contact .contact-hero__lead a:hover,
.page-contact .contact-hero__lead a:focus-visible {
  color: var(--acid-bright);
  border-bottom-color: var(--acid-bright);
}

.page-contact .contact-hero__note {
  margin: 0;
  padding-left: 12px;
  font-size: 0.7rem;
  line-height: 1.9;
  letter-spacing: 0.02em;
  color: var(--rock);
  border-left: 2px solid var(--purple);
}

.page-contact .contact-hero__visual {
  display: flex;
  justify-content: center;
}

.page-contact .contact-postmark-svg {
  width: 100%;
  max-width: 440px;
  height: auto;
}

.page-contact .contact-postmark-svg .enk-line {
  fill: none;
  stroke: var(--border-mid);
  stroke-width: 1.5;
  stroke-dasharray: 7 5;
}

.page-contact .contact-postmark-svg .enk-fold {
  fill: none;
  stroke: var(--purple);
  stroke-width: 1.5;
}

.page-contact .contact-postmark-svg .stamp-circle {
  fill: rgba(155, 92, 255, 0.07);
  stroke: var(--acid);
  stroke-width: 1.5;
  stroke-dasharray: 4 3;
}

.page-contact .contact-postmark-svg .stamp-word {
  fill: var(--paper);
  font-family: var(--font-display);
  font-size: 24px;
}

.page-contact .contact-postmark-svg .signal-line {
  fill: none;
  stroke: var(--rock);
  stroke-width: 1;
  opacity: 0.55;
}

.page-contact .contact-postmark-svg .signal-line--off {
  stroke: var(--purple);
  opacity: 0.35;
}

.page-contact .contact-postmark-svg .stamp-code {
  fill: var(--rock);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
}

/* 匿名信与直连通道 */
.page-contact .contact-split {
  padding-block: 48px 56px;
}

.page-contact .contact-split__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 46px;
}

.page-contact .letter-block__head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 20px;
}

.page-contact .letter-block__heading {
  min-width: 0;
}

.page-contact .letter-block__sub {
  margin: 0;
  font-size: 0.8rem;
  color: var(--rock);
}

.page-contact .letter-wrap {
  position: relative;
}

.page-contact .letter-paper {
  position: relative;
  overflow: hidden;
  background: var(--contact-sheet);
  color: var(--contact-document);
  border-radius: var(--radius-sm);
  box-shadow:
    0 10px 0 rgba(176, 101, 90, 0.3),
    var(--shadow-float);
  transform: rotate(-0.35deg);
}

.page-contact .letter-paper__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.22;
  mix-blend-mode: multiply;
  pointer-events: none;
}

.page-contact .letter-paper__crease {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    linear-gradient(102deg, transparent 36%, rgba(176, 101, 90, 0.16) 36% 37%, transparent 37%),
    linear-gradient(76deg, transparent 82%, rgba(11, 14, 18, 0.08) 82% 83%, transparent 83%),
    repeating-linear-gradient(to bottom, transparent 0 3px, rgba(11, 14, 18, 0.025) 3px 4px);
}

.page-contact .letter-paper__body {
  position: relative;
  z-index: 2;
  padding: 20px 18px 22px;
}

.page-contact .letter-label {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(11, 14, 18, 0.58);
}

.page-contact .letter-textarea {
  display: block;
  width: 100%;
  min-height: 132px;
  resize: vertical;
  padding: 12px 14px;
  color: var(--contact-document);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.7;
  border: 1px solid rgba(11, 14, 18, 0.22);
  border-radius: var(--radius-sm);
  background: rgba(244, 235, 217, 0.72);
  transition: border-color var(--t-fast), box-shadow var(--t-fast), background var(--t-fast);
}

.page-contact .letter-textarea::placeholder {
  color: rgba(11, 14, 18, 0.4);
}

.page-contact .letter-textarea:focus-visible {
  outline: none;
  border-color: var(--purple);
  background: rgba(244, 235, 217, 0.9);
  box-shadow: 0 0 0 3px rgba(155, 92, 255, 0.32);
}

.page-contact .letter-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 16px;
}

.page-contact .letter-hint {
  max-width: 15em;
  font-size: 0.7rem;
  line-height: 1.55;
  color: rgba(11, 14, 18, 0.52);
}

.page-contact .stamp-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 106px;
  height: 106px;
  flex: 0 0 auto;
  color: var(--contact-document);
  text-decoration: none;
  text-transform: uppercase;
  border-radius: 50%;
  background: var(--acid);
  box-shadow:
    0 0 0 2px var(--contact-document),
    0 0 0 5px rgba(183, 240, 75, 0.55),
    0 12px 24px rgba(11, 14, 18, 0.28);
  transform: rotate(4deg);
  transition: transform var(--t-fast), box-shadow var(--t-fast);
}

.page-contact .stamp-btn:hover,
.page-contact .stamp-btn:focus-visible {
  box-shadow:
    0 0 0 2px var(--contact-document),
    0 0 0 5px rgba(183, 240, 75, 0.85),
    0 14px 28px rgba(11, 14, 18, 0.32);
  transform: rotate(-5deg) scale(1.04);
}

.page-contact .stamp-btn__ring {
  position: absolute;
  inset: 8px;
  border: 1.5px dashed rgba(11, 14, 18, 0.55);
  border-radius: 50%;
  pointer-events: none;
}

.page-contact .stamp-btn__text {
  position: relative;
  font-family: var(--font-display);
  font-size: 0.82rem;
  line-height: 1.3;
  text-align: center;
  letter-spacing: 0.06em;
}

.page-contact .letter-note {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 20px;
}

.page-contact .letter-note p {
  max-width: 30em;
  margin: 0;
}

/* 直连通道 */
.page-contact .channel-block__head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
}

.page-contact .channel-block__head h2 {
  margin: 0;
}

.page-contact .channel-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-contact .channel-card {
  position: relative;
  padding: 16px 18px 18px;
  background: linear-gradient(135deg, rgba(43, 48, 54, 0.92), rgba(26, 19, 56, 0.78));
  border: 1px solid var(--border-dim);
  border-left: 3px solid var(--purple);
  border-radius: var(--radius-sm);
  transition: border-color var(--t-fast), background var(--t-fast);
}

.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within {
  border-color: var(--border-mid);
  background: linear-gradient(135deg, rgba(43, 48, 54, 0.98), rgba(26, 19, 56, 0.88));
}

.page-contact .channel-card--primary {
  border-left-color: var(--acid);
}

.page-contact .channel-card--urgent {
  border-left-color: var(--alert);
}

.page-contact .channel-card--addr {
  border-left-color: var(--clay);
}

.page-contact .channel-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.page-contact .channel-card__flag {
  padding: 3px 8px;
  font-size: 0.64rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--rock);
  border: 1px solid var(--border-mid);
  border-radius: 2px;
  background: rgba(11, 14, 18, 0.45);
}

.page-contact .channel-card__flag--alt {
  color: var(--purple);
  border-color: rgba(155, 92, 255, 0.5);
}

.page-contact .channel-card__flag--alert {
  color: var(--alert);
  border-color: rgba(215, 38, 61, 0.5);
}

.page-contact .channel-card__flag--clay {
  color: var(--clay);
  border-color: rgba(176, 101, 90, 0.5);
}

.page-contact .channel-card__title {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--rock);
}

.page-contact .channel-card__link {
  display: inline-block;
  font-size: clamp(0.95rem, 2.2vw, 1.15rem);
  color: var(--acid-bright);
  text-decoration: none;
  word-break: break-all;
  border-bottom: 1px dashed rgba(226, 255, 112, 0.4);
  transition: color var(--t-fast), border-color var(--t-fast);
}

.page-contact .channel-card__link:hover,
.page-contact .channel-card__link:focus-visible {
  color: var(--acid);
  border-bottom-color: var(--acid);
}

.page-contact .channel-card__link--tel {
  color: var(--paper);
  border-bottom-color: rgba(244, 235, 217, 0.3);
}

.page-contact .channel-card__link--tel:hover,
.page-contact .channel-card__link--tel:focus-visible {
  color: var(--alert);
  border-bottom-color: var(--alert);
}

.page-contact .channel-card__desc {
  margin: 8px 0 0;
  font-size: 0.76rem;
  line-height: 1.7;
  color: var(--rock);
}

.page-contact .channel-card__address {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--paper);
}

.page-contact .channel-card__map {
  display: block;
  width: 100%;
  max-width: 420px;
  margin-top: 14px;
  border: 1px solid var(--border-dim);
  background: var(--bg-smoke);
}

/* 响应承诺 */
.page-contact .response-band {
  position: relative;
  padding: 52px 0 56px;
  background:
    linear-gradient(90deg, rgba(155, 92, 255, 0.09), transparent 62%),
    linear-gradient(180deg, rgba(26, 19, 56, 0.55), var(--bg-deep));
  border-block: 1px solid var(--border-dim);
}

.page-contact .response-band::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(to bottom, transparent 0 18px, rgba(155, 92, 255, 0.035) 18px 19px);
}

.page-contact .response-band .content-container {
  position: relative;
  z-index: 1;
}

.page-contact .response-band__head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 30px;
}

.page-contact .response-band__head .uid-index {
  margin-top: 4px;
}

.page-contact .response-band__heading p {
  margin: 0;
  font-size: 0.8rem;
  color: var(--rock);
}

.page-contact .response-band__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 34px;
}

.page-contact .timeline {
  position: relative;
  margin: 0;
  padding: 4px 0 0;
  list-style: none;
  border-left: 1px solid var(--border-mid);
}

.page-contact .timeline-item {
  position: relative;
  padding: 0 0 28px 28px;
}

.page-contact .timeline-item:last-child {
  padding-bottom: 0;
}

.page-contact .timeline-dot {
  position: absolute;
  top: 5px;
  left: -5.5px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--purple);
  box-shadow: 0 0 12px rgba(155, 92, 255, 0.75);
}

.page-contact .timeline-dot--acid {
  background: var(--acid);
  box-shadow: 0 0 12px rgba(183, 240, 75, 0.75);
}

.page-contact .timeline-date {
  display: inline-block;
  margin-bottom: 4px;
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--acid-bright);
}

.page-contact .timeline-body h3 {
  margin: 0 0 4px;
  font-size: 1rem;
  letter-spacing: 0.03em;
  color: var(--paper);
}

.page-contact .timeline-body p {
  margin: 0;
  font-size: 0.78rem;
  line-height: 1.7;
  color: var(--rock);
}

.page-contact .terminal-window {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  overflow: hidden;
  background: rgba(11, 14, 18, 0.88);
  border: 1px solid var(--border-mid);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}

.page-contact .terminal-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 12px;
  background: var(--bg-smoke);
  border-bottom: 1px solid var(--border-dim);
}

.page-contact .terminal-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--rock);
}

.page-contact .terminal-dot:first-child {
  background: var(--alert);
}

.page-contact .terminal-dot:nth-child(2) {
  background: var(--clay);
}

.page-contact .terminal-dot:nth-child(3) {
  background: var(--acid);
}

.page-contact .terminal-title {
  margin-left: 8px;
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  color: var(--rock);
}

.page-contact .terminal-content {
  flex: 1;
  padding: 16px 16px 18px;
  font-size: 0.78rem;
  line-height: 1.95;
  color: var(--paper);
}

.page-contact .terminal-line {
  margin: 0;
  overflow-wrap: anywhere;
}

.page-contact .terminal-line .prompt {
  color: var(--acid);
}

.page-contact .terminal-line.cmd {
  color: var(--acid-bright);
  animation: page-contact-blink 1.1s steps(2, start) infinite;
}

@keyframes page-contact-blink {
  to {
    visibility: hidden;
  }
}

/* 问题边界 */
.page-contact .boundary-band {
  padding: 54px 0 64px;
}

.page-contact .boundary-band__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 38px;
}

.page-contact .boundary-main__head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 22px;
}

.page-contact .boundary-main__head p {
  margin: 0;
  font-size: 0.8rem;
  color: var(--rock);
}

.page-contact .data-list {
  display: grid;
  gap: 10px;
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
}

.page-contact .data-list li {
  position: relative;
  padding: 12px 16px 12px 30px;
  font-size: 0.8rem;
  line-height: 1.7;
  color: var(--rock);
  background: rgba(43, 48, 54, 0.5);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-sm);
}

.page-contact .data-list li::before {
  content: "▸";
  position: absolute;
  left: 13px;
  color: var(--acid);
}

.page-contact .data-list strong {
  color: var(--paper);
  font-weight: 600;
}

.page-contact .callout {
  margin: 0 0 22px;
  padding: 14px 16px;
  font-size: 0.8rem;
  line-height: 1.7;
  color: var(--rock);
  background: rgba(43, 48, 54, 0.42);
  border: 1px solid var(--border-dim);
  border-left: 3px solid var(--purple);
  border-radius: var(--radius-sm);
}

.page-contact .callout--alert {
  background: rgba(215, 38, 61, 0.08);
  border-left-color: var(--alert);
}

.page-contact .callout p {
  margin: 0;
}

.page-contact .callout__title {
  margin-bottom: 4px;
  font-family: var(--font-display);
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--alert);
}

.page-contact .boundary-index {
  padding: 14px 16px;
  border: 1px solid rgba(183, 240, 75, 0.24);
  border-left: 3px solid var(--acid);
  border-radius: var(--radius-sm);
  background: linear-gradient(120deg, rgba(183, 240, 75, 0.06), transparent 72%);
}

.page-contact .boundary-index__label {
  margin: 0 0 8px;
  font-size: 0.64rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--acid-bright);
}

.page-contact .boundary-index__text {
  margin: 0;
  font-size: 0.78rem;
  line-height: 2;
  color: var(--rock);
}

.page-contact .boundary-side {
  align-self: start;
}

.page-contact .boundary-card {
  padding: 20px 20px 18px;
  background:
    linear-gradient(160deg, rgba(155, 92, 255, 0.11), transparent 42%),
    var(--bg-smoke);
  border: 1px solid var(--border-mid);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  transform: rotate(0.3deg);
}

.page-contact .boundary-card h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
  letter-spacing: 0.03em;
  color: var(--paper);
}

.page-contact .boundary-card p {
  margin: 0 0 8px;
  font-size: 0.78rem;
  line-height: 1.75;
  color: var(--rock);
}

.page-contact .boundary-card__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.page-contact .boundary-card__links--small {
  gap: 14px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px dashed var(--border-dim);
}

.page-contact .boundary-card__links--small a {
  color: var(--rock);
  font-size: 0.72rem;
  text-decoration: none;
  border-bottom: 1px dashed rgba(138, 145, 153, 0.4);
  transition: color var(--t-fast), border-color var(--t-fast);
}

.page-contact .boundary-card__links--small a:hover,
.page-contact .boundary-card__links--small a:focus-visible {
  color: var(--acid);
  border-bottom-color: var(--acid);
}

.page-contact .btn {
  padding: 9px 13px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: color var(--t-fast), border-color var(--t-fast), background var(--t-fast);
}

.page-contact .btn-ghost {
  color: var(--paper);
  background: transparent;
  border: 1px solid var(--border-mid);
}

.page-contact .btn-ghost:hover,
.page-contact .btn-ghost:focus-visible {
  color: var(--acid);
  border-color: var(--acid);
  background: rgba(183, 240, 75, 0.06);
}

.page-contact .mono-sm {
  font-size: 0.72rem;
  color: var(--rock);
}

/* 响应式 */
@media (min-width: 640px) {
  .page-contact .contact-hero__visual {
    justify-content: flex-end;
  }

  .page-contact .letter-paper__body {
    padding: 26px 28px 28px;
  }

  .page-contact .response-band__grid {
    gap: 40px;
  }
}

@media (min-width: 860px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: center;
    gap: 40px;
    padding-block: 44px 56px;
  }

  .page-contact .contact-postmark-svg {
    max-width: 460px;
  }

  .page-contact .response-band__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: stretch;
    gap: 48px;
  }

  .page-contact .terminal-line {
    overflow-x: auto;
    white-space: nowrap;
    scrollbar-width: none;
  }

  .page-contact .terminal-line::-webkit-scrollbar {
    display: none;
  }
}

@media (min-width: 1024px) {
  .page-contact .contact-split__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: start;
    gap: var(--gap);
  }

  .page-contact .letter-block {
    padding-right: var(--gap);
    border-right: 1px solid var(--border-dim);
  }

  .page-contact .boundary-band__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
    gap: var(--gap);
  }

  .page-contact .boundary-side {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .terminal-line.cmd {
    animation: none;
  }

  .page-contact .stamp-btn,
  .page-contact .stamp-btn:hover,
  .page-contact .stamp-btn:focus-visible {
    transition: none;
    transform: none;
  }

  .page-contact .letter-paper {
    transform: none;
  }

  .page-contact .boundary-card {
    transform: none;
  }
}