.page-contact {
  padding-bottom: 88px;
}

.page-contact .gkk-breadcrumb {
  padding-top: 28px;
}

/* ===== 首屏 ===== */
.page-contact .contact-hero {
  padding: 36px 0 44px;
  max-width: 880px;
}

.page-contact .contact-hero__title {
  margin: 16px 0 0;
  font-family: var(--font-head);
  font-size: clamp(32px, 7vw, 56px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-contact .contact-hero__lead {
  margin: 22px 0 0;
  max-width: 38ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .contact-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

/* ===== 纵向主轴 ===== */
.page-contact .contact-flow {
  position: relative;
}

.page-contact .contact-block {
  position: relative;
  padding-top: 52px;
}

.page-contact .contact-block:first-child {
  padding-top: 12px;
}

.page-contact .contact-block__head {
  max-width: 720px;
}

.page-contact .contact-block__title {
  margin: 12px 0 0;
  font-family: var(--font-head);
  font-size: clamp(23px, 4vw, 34px);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-contact .contact-block__lead {
  margin: 14px 0 0;
  max-width: 38ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

@media (min-width: 1024px) {
  .page-contact .contact-flow {
    padding-left: 72px;
  }

  .page-contact .contact-flow::before {
    content: "";
    position: absolute;
    left: 23px;
    top: 18px;
    bottom: 24px;
    width: 1px;
    background: linear-gradient(
      180deg,
      var(--cyan-dim) 0%,
      var(--line) 12%,
      var(--line) 84%,
      var(--cyan-dim) 100%
    );
    opacity: 0.75;
  }

  .page-contact .contact-block::before {
    content: "";
    position: absolute;
    left: -53px;
    top: 62px;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--ink-900);
    border: 1px solid var(--cyan-dim);
  }

  .page-contact .contact-block:first-child::before {
    top: 22px;
  }
}

/* ===== 渠道说明 ===== */
.page-contact .contact-split {
  display: grid;
  gap: 28px;
  margin-top: 30px;
}

.page-contact .contact-channels {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-contact .contact-channels__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 18px 18px 20px;
  background: var(--ink-800);
  transition: background 0.22s var(--ease);
}

.page-contact .contact-channels__item:hover {
  background: var(--ink-600);
}

.page-contact .contact-channels__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-900);
  background: var(--cyan);
  border-radius: 4px;
  padding: 3px 8px 4px;
  white-space: nowrap;
  line-height: 1.4;
}

.page-contact .contact-channels__title {
  margin: 0;
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--text);
}

.page-contact .contact-channels__desc {
  margin: 7px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-contact .contact-split__figure {
  margin: 0;
}

/* ===== 写信要素 ===== */
.page-contact .contact-compose {
  display: grid;
  gap: 30px;
  margin-top: 30px;
}

.page-contact .contact-checklist {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .contact-checklist__item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

.page-contact .contact-checklist__item:last-child {
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-checklist__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--gold);
  padding-top: 2px;
}

.page-contact .contact-checklist__label {
  margin: 0;
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--text);
}

.page-contact .contact-checklist__desc {
  margin: 7px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .contact-compose__figure {
  margin: 0;
}

/* ===== 受理时段 ===== */
.page-contact .contact-timeline {
  margin-top: 28px;
  padding: 22px 20px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-800);
}

.page-contact .contact-timeline__scale {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-contact .contact-timeline__track {
  position: relative;
  height: 32px;
  margin-top: 10px;
  border-radius: 6px;
  background: var(--ink-700);
  border: 1px solid var(--line);
  overflow: hidden;
}

.page-contact .contact-timeline__fill {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    rgba(47, 227, 210, 0.34) 0%,
    rgba(46, 51, 80, 0.5) 52%,
    rgba(242, 180, 87, 0.3) 100%
  );
}

.page-contact .contact-timeline__fill::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    90deg,
    var(--line) 0 1px,
    transparent 1px 25%
  );
  opacity: 0.6;
}

.page-contact .contact-timeline__legend {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .contact-timeline__legend .gkk-num {
  color: var(--cyan);
  font-size: 13px;
  margin-right: 6px;
}

.page-contact .contact-order {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-contact .contact-order__item {
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 16px 18px;
  background: var(--ink-800);
}

.page-contact .contact-order__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan);
  padding-top: 2px;
}

.page-contact .contact-order__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .contact-order__note {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
  max-width: 62ch;
  padding-left: 14px;
  border-left: 2px solid var(--cya-dim, var(--cyan-dim));
}

/* ===== 站点署名 ===== */
.page-contact .contact-identity {
  display: grid;
  gap: 24px;
  margin-top: 28px;
}

.page-contact .contact-identity__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-contact .contact-identity__row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  align-items: baseline;
  justify-content: space-between;
  padding: 14px 2px;
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-identity__key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-contact .contact-identity__val {
  font-size: 15px;
  line-height: 1.6;
  color: var(--text);
  text-align: right;
  word-break: break-all;
}

.page-contact .contact-identity__val.gkk-num {
  color: var(--gold);
  font-size: 14px;
  letter-spacing: 0.04em;
}

.page-contact .contact-mail {
  padding: 22px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-800);
}

.page-contact .contact-mail__value {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.04em;
  color: var(--cyan);
  word-break: break-all;
}

.page-contact .gkk-copy {
  margin-top: 14px;
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1;
  color: var(--text);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 9px 18px;
  cursor: pointer;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-contact .gkk-copy:hover,
.page-contact .gkk-copy:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
}

.page-contact .contact-mail__note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

/* ===== 快捷入口 ===== */
.page-contact .contact-shortcuts {
  display: grid;
  gap: 12px;
  margin-top: 28px;
}

.page-contact .contact-shortcut {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  align-items: center;
  column-gap: 14px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-800);
  text-decoration: none;
  transition: border-color 0.22s var(--ease), background 0.22s var(--ease);
}

.page-contact .contact-shortcut:hover,
.page-contact .contact-shortcut:focus-visible {
  border-color: var(--cyan-dim);
  background: var(--ink-600);
}

.page-contact .contact-shortcut__idx {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--gold);
}

.page-contact .contact-shortcut__label {
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text);
}

.page-contact .contact-shortcut__hint {
  display: block;
  grid-column: 2;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
  transition: max-height 0.28s var(--ease), opacity 0.2s var(--ease), margin-top 0.28s var(--ease);
}

.page-contact .contact-shortcut:hover .contact-shortcut__hint,
.page-contact .contact-shortcut:focus-visible .contact-shortcut__hint {
  max-height: 72px;
  opacity: 1;
  margin-top: 6px;
}

.page-contact .contact-legal {
  margin: 24px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .contact-legal .gkk-link {
  color: var(--text);
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-contact .contact-legal .gkk-link:hover,
.page-contact .contact-legal .gkk-link:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan-dim);
}

/* ===== 断点 ===== */
@media (min-width: 760px) {
  .page-contact .contact-shortcuts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .contact-shortcut {
    grid-template-columns: 1fr;
    align-items: start;
    row-gap: 6px;
    padding: 20px 18px;
  }

  .page-contact .contact-shortcut__idx {
    grid-row: auto;
  }

  .page-contact .contact-shortcut__hint {
    grid-column: 1;
  }

  .page-contact .contact-identity {
    grid-template-columns: minmax(0, 6fr) minmax(0, 7fr);
    align-items: start;
    gap: 32px;
  }
}

@media (min-width: 920px) {
  .page-contact .contact-split {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: start;
    gap: 34px;
  }

  .page-contact .contact-compose {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
    gap: 40px;
  }

  .page-contact .contact-order__item {
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 20px;
  }
}

@media (min-width: 1100px) {
  .page-contact .contact-hero {
    padding-top: 48px;
    padding-bottom: 52px;
  }
}

@media (max-width: 480px) {
  .page-contact .contact-channels__item {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
  }

  .page-contact .contact-channels__key {
    justify-self: start;
  }

  .page-contact .contact-checklist__item {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 10px;
  }

  .page-contact .contact-order__item {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-channels__item,
  .page-contact .contact-shortcut,
  .page-contact .contact-shortcut__hint,
  .page-contact .gkk-copy,
  .page-contact .contact-legal .gkk-link {
    transition: none;
  }
}

.page-contact {
  --cya-dim: currentColor;
}