.page-contact {
  --contact-gutter: 20px;
  --contact-rule: 1px solid var(--color-fog);
  --contact-rule-strong: 1px solid var(--color-ink);
  background: var(--color-paper);
  color: var(--color-line);
  font-family: var(--font-sans);
  line-height: 1.7;
}

.page-contact .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 12px;
  padding: 16px var(--contact-gutter) 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--color-muted);
}

.page-contact .breadcrumb a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.24s ease, color 0.24s ease;
}

.page-contact .breadcrumb a:hover {
  color: var(--color-spring);
  border-color: var(--color-spring);
}

.page-contact .breadcrumb-sep {
  color: var(--color-fog);
}

.page-contact .section-anno {
  display: block;
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: var(--color-muted);
  text-transform: uppercase;
}

.page-contact .section-head {
  margin-bottom: 24px;
}

.page-contact .section-head h2 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 1.6rem;
  line-height: 1.2;
  color: var(--color-ink);
  letter-spacing: 0.02em;
}

.page-contact .connect-hero {
  position: relative;
  padding: 36px 0 48px;
  background-color: var(--color-winter);
  background-image: linear-gradient(rgba(16, 19, 18, 0.045) 1px, transparent 1px), linear-gradient(90deg, rgba(16, 19, 18, 0.045) 1px, transparent 1px);
  background-size: 28px 28px;
  border-bottom: var(--contact-rule-strong);
}

.page-contact .connect-hero__inner {
  display: grid;
  gap: 24px;
  padding: 0 var(--contact-gutter);
}

.page-contact .connect-hero__text .section-anno {
  display: inline-block;
  margin-bottom: 14px;
  padding: 4px 10px;
  border: 1px solid var(--color-fog);
  background: var(--color-paper);
  font-size: 0.7rem;
}

.page-contact .connect-hero__text h1 {
  margin: 0 0 16px;
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 5vw, 3rem);
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--color-ink);
  border-left: 4px solid var(--color-spring);
  padding-left: 14px;
}

.page-contact .connect-hero__lead {
  margin: 0 0 14px;
  max-width: 58ch;
  font-size: 0.95rem;
  color: var(--color-muted);
}

.page-contact .connect-hero__lead strong,
.page-contact .connect-hero__text strong {
  color: var(--color-line);
  font-weight: 600;
  border-bottom: 1px solid rgba(13, 143, 90, 0.45);
}

.page-contact .connect-hero__cite {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1.8;
  color: var(--color-muted);
}

.page-contact .connect-hero__media {
  margin: 0;
  border: 1px solid var(--color-ink);
  background: var(--color-ink);
}

.page-contact .connect-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 5 / 3;
}

.page-contact .connect-hero__media figcaption {
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--color-paper);
  background: var(--color-ink);
}

.page-contact .contact-channels {
  padding: 48px 0 44px;
  border-bottom: var(--contact-rule);
  background: var(--color-paper);
}

.page-contact .contact-channels__layout {
  display: grid;
  gap: 40px;
  padding: 0 var(--contact-gutter);
}

.page-contact .contact-channel-list {
  display: grid;
  gap: 4px;
}

.page-contact .contact-channel-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  padding: 18px 0 18px 12px;
  border-bottom: var(--contact-rule);
  border-left: 2px solid transparent;
  transition: border-color 0.24s ease, background-color 0.24s ease;
}

.page-contact .contact-channel-card:hover {
  border-left-color: var(--color-spring);
  background: rgba(232, 239, 237, 0.35);
}

.page-contact .contact-channel-card__index {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--color-muted);
}

.page-contact .contact-channel-card__body h3 {
  margin: 0 0 6px;
  font-family: var(--font-serif);
  font-size: 1rem;
  line-height: 1.4;
  color: var(--color-ink);
}

.page-contact .contact-channel-card__body p {
  margin: 0 0 10px;
  max-width: 55ch;
  font-size: 0.85rem;
  color: var(--color-muted);
}

.page-contact .contact-channel-card__value {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--color-spring);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  word-break: break-all;
  transition: border-color 0.24s ease;
}

.page-contact .contact-channel-card__value:hover {
  border-color: var(--color-spring);
}

.page-contact .feedback-preview {
  position: relative;
  padding: 28px 20px 24px;
  background: var(--color-winter);
  border: 1px solid var(--color-ink);
  box-shadow: 6px 6px 0 rgba(16, 19, 18, 0.08);
}

.page-contact .feedback-preview::before {
  content: "FEEDBACK ENTRY";
  position: absolute;
  top: 0;
  left: 0;
  padding: 3px 8px;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.18em;
  background: var(--color-ink);
  color: var(--color-paper);
}

.page-contact .feedback-preview__head {
  margin-bottom: 24px;
}

.page-contact .feedback-preview__head .section-anno {
  margin-bottom: 6px;
  font-size: 0.66rem;
}

.page-contact .feedback-preview__head h2 {
  margin: 0 0 8px;
  font-family: var(--font-serif);
  font-size: 1.35rem;
  line-height: 1.3;
  color: var(--color-ink);
}

.page-contact .feedback-preview__head p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--color-muted);
}

.page-contact .feedback-preview__topics h3 {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-line);
  font-weight: 500;
}

.page-contact .feedback-topic-selector {
  position: relative;
}

.page-contact .feedback-topic-radio {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
  overflow: hidden;
  pointer-events: none;
}

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

.page-contact .feedback-topic-label {
  display: inline-block;
  padding: 6px 12px;
  border: 1px solid var(--color-fog);
  background: var(--color-paper);
  font-size: 0.76rem;
  color: var(--color-muted);
  cursor: pointer;
  transition: border-color 0.24s ease, color 0.24s ease, background-color 0.24s ease;
}

.page-contact .feedback-topic-label:hover {
  border-color: var(--color-muted);
  color: var(--color-ink);
}

.page-contact .feedback-topic-radio--panel:checked ~ .feedback-topic-labels .feedback-topic-label[for="topic-panel"],
.page-contact .feedback-topic-radio--guide:checked ~ .feedback-topic-labels .feedback-topic-label[for="topic-guide"],
.page-contact .feedback-topic-radio--search:checked ~ .feedback-topic-labels .feedback-topic-label[for="topic-search"] {
  border-color: var(--color-spring);
  color: var(--color-spring);
  background: rgba(13, 143, 90, 0.08);
}

.page-contact .feedback-topic-panels {
  border-top: 1px solid var(--color-fog);
  padding-top: 16px;
}

.page-contact .feedback-topic-panel {
  display: none;
}

.page-contact .feedback-topic-radio--panel:checked ~ .feedback-topic-panels .feedback-topic-panel--panel,
.page-contact .feedback-topic-radio--guide:checked ~ .feedback-topic-panels .feedback-topic-panel--guide,
.page-contact .feedback-topic-radio--search:checked ~ .feedback-topic-panels .feedback-topic-panel--search {
  display: block;
  animation: page-contact-fade-in 0.24s ease both;
}

.page-contact .feedback-topic-panel h4 {
  margin: 0 0 6px;
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--color-ink);
}

.page-contact .feedback-topic-panel p {
  margin: 0;
  font-size: 0.83rem;
  color: var(--color-muted);
}

@keyframes page-contact-fade-in {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-contact .feedback-template {
  padding: 48px 0 44px;
  border-bottom: var(--contact-rule);
  background: var(--color-paper);
}

.page-contact .feedback-template__inner {
  padding: 0 var(--contact-gutter);
}

.page-contact .feedback-template__intro {
  margin: 0 0 24px;
  max-width: 70ch;
  font-size: 0.9rem;
  color: var(--color-muted);
}

.page-contact .feedback-template__grid {
  display: grid;
  gap: 16px;
}

.page-contact .feedback-template-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  padding: 18px 16px;
  background: var(--color-winter);
  border-left: 3px solid var(--color-spring);
  border-bottom: var(--contact-rule);
}

.page-contact .feedback-template-card__num {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--color-muted);
  border: 1px solid var(--color-fog);
  padding: 2px 7px;
  height: fit-content;
}

.page-contact .feedback-template-card__content h3 {
  margin: 0 0 8px;
  font-family: var(--font-serif);
  font-size: 1.04rem;
  line-height: 1.4;
  color: var(--color-ink);
}

.page-contact .feedback-template-card__content p {
  margin: 0;
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--color-muted);
}

.page-contact .feedback-template__note {
  margin-top: 24px;
  padding: 14px 16px;
  border: 1px dashed var(--color-fog);
  font-size: 0.82rem;
  color: var(--color-muted);
  background: rgba(232, 239, 237, 0.3);
}

.page-contact .access-mailing {
  padding: 48px 0;
  background: var(--color-winter);
  border-bottom: var(--contact-rule-strong);
}

.page-contact .access-mailing__layout {
  display: grid;
  gap: 28px;
  padding: 0 var(--contact-gutter);
}

.page-contact .access-mailing__text p {
  margin: 0 0 18px;
  max-width: 64ch;
  font-size: 0.88rem;
  color: var(--color-muted);
}

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

.page-contact .access-mailing__list li {
  position: relative;
  padding-left: 20px;
  font-size: 0.85rem;
  color: var(--color-muted);
}

.page-contact .access-mailing__list li::before {
  content: "→";
  position: absolute;
  left: 0;
  font-family: var(--font-mono);
  color: var(--color-spring);
}

.page-contact .access-mailing__media {
  margin: 0;
  border: 1px solid var(--color-ink);
  background: var(--color-ink);
}

.page-contact .access-mailing__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 4 / 3;
}

.page-contact .access-mailing__media figcaption {
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--color-paper);
  background: var(--color-ink);
}

.page-contact .response-support {
  padding: 48px 0 44px;
  background: var(--color-paper);
  border-bottom: var(--contact-rule);
}

.page-contact .response-support > .section-head {
  padding: 0 var(--contact-gutter);
}

.page-contact .response-support__grid {
  display: grid;
  gap: 16px;
  padding: 0 var(--contact-gutter);
}

.page-contact .response-support-card {
  position: relative;
  padding: 20px 16px 18px;
  background: var(--color-paper);
  border: 1px solid var(--color-fog);
  border-top: 3px solid transparent;
}

.page-contact .response-support-card::before {
  content: "";
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  width: 36px;
  height: 3px;
  background: var(--color-ink);
}

.page-contact .response-support-card--time::before {
  background: var(--color-spring);
}

.page-contact .response-support-card--lang::before {
  background: var(--color-summer);
}

.page-contact .response-support-card--scope::before {
  background: var(--color-autumn);
}

.page-contact .response-support-card--out-of-scope::before {
  background: var(--color-muted);
}

.page-contact .response-support-card h3 {
  margin: 0 0 10px;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--color-ink);
}

.page-contact .response-support-card p,
.page-contact .response-support-card li {
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--color-muted);
}

.page-contact .response-support-card ul {
  margin: 0;
  padding-left: 16px;
}

.page-contact .response-support-card li::marker {
  color: var(--color-spring);
}

.page-contact .response-support-card__highlight {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--color-muted);
}

.page-contact .response-support-card__highlight strong {
  color: var(--color-spring);
  font-size: 1.06em;
  font-weight: 600;
}

.page-contact .page-behavior {
  padding: 48px 0;
  background: var(--color-ink);
  color: var(--color-paper);
}

.page-contact .page-behavior__inner {
  padding: 0 var(--contact-gutter);
}

.page-contact .page-behavior__inner .section-head {
  margin-bottom: 26px;
}

.page-contact .page-behavior__inner .section-anno {
  color: var(--color-fog);
}

.page-contact .page-behavior__inner h2 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 1.5rem;
  line-height: 1.3;
  color: var(--color-paper);
}

.page-contact .page-behavior__layout {
  display: grid;
  gap: 24px;
}

.page-contact .page-behavior__text p {
  margin: 0 0 14px;
  max-width: 64ch;
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--color-fog);
}

.page-contact .page-behavior__text ul {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .page-behavior__text li {
  position: relative;
  padding-left: 20px;
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--color-fog);
}

.page-contact .page-behavior__text li::before {
  content: "＋";
  position: absolute;
  left: 0;
  font-family: var(--font-mono);
  color: var(--color-spring);
}

.page-contact .page-behavior__text a {
  color: var(--color-paper);
  text-decoration: none;
  border-bottom: 1px solid var(--color-spring);
  transition: border-color 0.24s ease;
}

.page-contact .page-behavior__text a:hover {
  border-color: var(--color-paper);
}

.page-contact .page-behavior__aside {
  border-top: 1px solid var(--color-muted);
  padding-top: 18px;
}

.page-contact .page-behavior__aside p {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--color-fog);
}

.page-contact .page-behavior__aside ul {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .page-behavior__aside a {
  color: var(--color-paper);
  font-size: 0.82rem;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.24s ease, color 0.24s ease;
}

.page-contact .page-behavior__aside a:hover {
  border-color: var(--color-spring);
  color: var(--color-spring);
}

@media (min-width: 768px) {
  .page-contact {
    --contact-gutter: 32px;
  }

  .page-contact .connect-hero__inner {
    grid-template-columns: 5fr 7fr;
    align-items: center;
    gap: 40px;
    max-width: 1280px;
    margin: 0 auto;
  }

  .page-contact .connect-hero {
    padding: 44px 0 56px;
  }

  .page-contact .contact-channels__layout {
    grid-template-columns: 7fr 5fr;
    gap: 48px;
    max-width: 1280px;
    margin: 0 auto;
    align-items: start;
  }

  .page-contact .contact-channels {
    padding: 56px 0 52px;
  }

  .page-contact .feedback-preview {
    position: sticky;
    top: 24px;
  }

  .page-contact .feedback-template {
    padding: 56px 0 52px;
  }

  .page-contact .feedback-template__inner {
    max-width: 1280px;
    margin: 0 auto;
  }

  .page-contact .feedback-template__grid {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

  .page-contact .access-mailing {
    padding: 56px 0;
  }

  .page-contact .access-mailing__layout {
    grid-template-columns: 6fr 5fr;
    gap: 48px;
    max-width: 1280px;
    margin: 0 auto;
    align-items: center;
  }

  .page-contact .response-support {
    padding: 56px 0 52px;
  }

  .page-contact .response-support > .section-head,
  .page-contact .response-support__grid {
    max-width: 1280px;
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--contact-gutter);
    padding-right: var(--contact-gutter);
  }

  .page-contact .response-support__grid {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

  .page-contact .page-behavior {
    padding: 56px 0;
  }

  .page-contact .page-behavior__inner {
    max-width: 1280px;
    margin: 0 auto;
  }

  .page-contact .page-behavior__layout {
    grid-template-columns: 3fr 2fr;
    gap: 40px;
    align-items: start;
  }

  .page-contact .page-behavior__aside {
    border-top: none;
    border-left: 1px solid var(--color-muted);
    padding-top: 0;
    padding-left: 28px;
  }

  .page-contact .page-behavior__aside ul {
    display: grid;
    gap: 10px;
  }
}

@media (min-width: 1024px) {
  .page-contact .response-support__grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-contact .feedback-template__grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-contact .connect-hero__text h1 {
    font-size: 3rem;
  }

  .page-contact .contact-channel-card {
    grid-template-columns: auto 1fr;
    gap: 20px;
  }
}