.page-contact {
  --ct-blue: var(--glacier-500);
  --ct-line: var(--glacier-300);
  --ct-ink: var(--graphite);
  padding-bottom: 6rem;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding-top: 2.5rem;
  padding-bottom: 1rem;
}

.page-contact .page-head__title {
  max-width: 20ch;
}

.page-contact .page-head__lede {
  max-width: 42em;
}

.page-contact .contact-hero::after {
  content: "";
  display: block;
  height: 3px;
  margin-top: 2.25rem;
  background: linear-gradient(
    90deg,
    var(--glacier-500) 0 38%,
    var(--prayer-orange) 38% 54%,
    var(--ink-green) 54% 100%
  );
  opacity: .85;
}

.page-contact .contact-quick {
  margin-top: 2.25rem;
  display: grid;
}

.page-contact .quick-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .4rem .9rem;
  padding: .95rem 0;
  border-bottom: 1px solid var(--glacier-050);
}

.page-contact .quick-row:last-child {
  border-bottom: 0;
}

.page-contact .quick-label {
  flex: 0 0 auto;
  min-width: 4.5em;
  font-family: var(--font-head);
  font-size: .8125rem;
  letter-spacing: .08em;
  color: var(--mist);
}

.page-contact .quick-value {
  font-size: 1.0625rem;
  color: var(--ct-ink);
  word-break: break-all;
}

.page-contact .quick-value.mono {
  font-family: var(--font-mono);
  letter-spacing: .02em;
}

.page-contact .quick-tel {
  text-decoration: none;
  color: var(--ct-blue);
  border-bottom: 1px solid var(--ct-line);
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

.page-contact .quick-tel:hover {
  color: var(--prayer-orange);
  border-bottom-color: var(--prayer-orange);
}

.page-contact .contact-shortcut {
  margin: 1.5rem 0 0;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .contact-shortcut a {
  color: var(--ct-blue);
  text-decoration: none;
  border-bottom: 1px solid var(--ct-line);
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

.page-contact .contact-shortcut a:hover {
  color: var(--prayer-orange);
  border-bottom-color: var(--prayer-orange);
}

/* ---------- 渠道列表 + 分类图 ---------- */
.page-contact .contact-cols {
  display: grid;
  gap: 2.5rem;
  margin-top: 2.5rem;
}

.page-contact .channel-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.75rem;
}

.page-contact .channel-item {
  padding-left: 1.25rem;
  border-left: 2px solid var(--ct-blue);
  transition: border-color 160ms var(--ease), transform 160ms var(--ease);
}

.page-contact .channel-item:hover {
  border-left-color: var(--prayer-orange);
  transform: translateX(2px);
}

.page-contact .channel-code {
  display: block;
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .08em;
  color: var(--prayer-orange);
}

.page-contact .channel-name {
  margin: .3rem 0 .45rem;
  font-family: var(--font-head);
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--glacier-700);
}

.page-contact .channel-value {
  margin: 0 0 .5rem;
  font-size: 1.0625rem;
  color: var(--ct-ink);
  word-break: break-all;
}

.page-contact .channel-value.mono {
  font-family: var(--font-mono);
  letter-spacing: .02em;
}

.page-contact .channel-desc {
  margin: 0 0 .85rem;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .channel-item .copy-btn {
  font-family: var(--font-head);
  font-size: .8125rem;
  letter-spacing: .04em;
  padding: .35rem .8rem;
  border: 1px solid var(--ct-line);
  border-radius: 2px;
  background: var(--snow-white);
  color: var(--glacier-700);
  cursor: pointer;
  transition: border-color 160ms var(--ease), background-color 160ms var(--ease);
}

.page-contact .channel-item .copy-btn:hover {
  border-color: var(--prayer-orange);
  background: var(--prayer-orange-100);
}

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

/* ---------- 三类事项折叠 ---------- */
.page-contact .contact-fold {
  margin-top: 2.5rem;
  border-top: 2px solid var(--glacier-700);
}

.page-contact .contact-fold .fold__item {
  border-bottom: 1px solid var(--ct-line);
}

.page-contact .contact-fold .fold__summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .35rem .9rem;
  padding: 1.3rem .25rem;
  cursor: pointer;
  list-style: none;
  transition: background-color 160ms var(--ease);
}

.page-contact .contact-fold .fold__summary::-webkit-details-marker {
  display: none;
}

.page-contact .contact-fold .fold__summary:hover {
  background: var(--glacier-050);
}

.page-contact .contact-fold .fold__summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1.125rem;
  line-height: 1;
  color: var(--ct-blue);
}

.page-contact .contact-fold .fold__item[open] > .fold__summary::after {
  content: "–";
  color: var(--prayer-orange);
}

.page-contact .fold-code {
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .08em;
  color: var(--prayer-orange);
}

.page-contact .fold-name {
  font-family: var(--font-head);
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--glacier-700);
}

.page-contact .fold-hint {
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .04em;
  color: var(--mist);
}

.page-contact .contact-fold .fold__body {
  padding: 0 .25rem 1.75rem;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--ct-ink);
}

.page-contact .contact-fold .fold__body p {
  margin: 0 0 .9rem;
}

.page-contact .fold-list {
  margin: 0 0 .9rem;
  padding: 0 0 0 1.1rem;
  list-style: none;
}

.page-contact .fold-list li {
  position: relative;
  margin-bottom: .5rem;
  padding-left: .9rem;
}

.page-contact .fold-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: 6px;
  height: 2px;
  background: var(--ct-blue);
}

.page-contact .fold-list b {
  color: var(--glacier-700);
  font-weight: 600;
}

.page-contact .contact-fold .fold__body a {
  color: var(--ct-blue);
  text-decoration: none;
  border-bottom: 1px solid var(--ct-line);
}

.page-contact .contact-fold .fold__body a:hover {
  color: var(--prayer-orange);
  border-bottom-color: var(--prayer-orange);
}

/* ---------- 处理节奏 ---------- */
.page-contact .rhythm-list {
  list-style: none;
  margin: 2.5rem 0 0;
  padding: 0;
  border-top: 2px solid var(--glacier-700);
}

.page-contact .rhythm-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .35rem 1.1rem;
  padding: 1.4rem .5rem;
  border-bottom: 1px solid var(--ct-line);
  transition: background-color 160ms var(--ease);
}

.page-contact .rhythm-step:hover {
  background: var(--glacier-050);
}

.page-contact .rhythm-num {
  font-family: var(--font-mono);
  font-size: 1rem;
  letter-spacing: .06em;
  color: var(--prayer-orange);
  padding-top: .1rem;
}

.page-contact .rhythm-body h3 {
  margin: 0 0 .4rem;
  font-family: var(--font-head);
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--glacier-700);
}

.page-contact .rhythm-body p {
  margin: 0 0 .7rem;
  font-size: .9375rem;
  line-height: 1.85;
  color: var(--ct-ink);
}

.page-contact .rhythm-time {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .05em;
  color: var(--ink-green);
  background: var(--ink-green-050);
  padding: .22rem .6rem;
  border-radius: 2px;
}

.page-contact .rhythm-figure {
  margin: 2.5rem 0 0;
}

/* ---------- 主体信息与备案 ---------- */
.page-contact .record-panel {
  background: var(--glacier-050);
  padding: 2.25rem 1.5rem;
  border-left: 2px solid var(--glacier-500);
}

.page-contact .record-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.25rem;
  margin: 2rem 0 0;
}

.page-contact .record-cell {
  border-top: 1px solid var(--glacier-300);
  padding-top: .75rem;
}

.page-contact .record-grid dt {
  font-family: var(--font-head);
  font-size: .8125rem;
  letter-spacing: .08em;
  color: var(--mist);
  margin-bottom: .35rem;
}

.page-contact .record-grid dd {
  margin: 0;
  font-size: 1.0625rem;
  color: var(--ct-ink);
  word-break: break-all;
}

.page-contact .record-grid dd.mono {
  font-family: var(--font-mono);
  letter-spacing: .02em;
}

.page-contact .record-note {
  margin: 2rem 0 0;
  font-size: .9375rem;
  line-height: 1.85;
  color: var(--mist);
}

.page-contact .record-note a {
  color: var(--ct-blue);
  text-decoration: none;
  border-bottom: 1px solid var(--ct-line);
}

.page-contact .record-note a:hover {
  color: var(--prayer-orange);
  border-bottom-color: var(--prayer-orange);
}

/* ---------- 图片与焦点 ---------- */
.page-contact .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}

.page-contact a:focus-visible,
.page-contact button:focus-visible,
.page-contact summary:focus-visible {
  outline: 2px solid var(--prayer-orange);
  outline-offset: 2px;
  box-shadow: 0 0 0 2px var(--snow-white);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .contact-quick {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-top: 1px solid var(--ct-line);
    border-bottom: 1px solid var(--ct-line);
  }

  .page-contact .quick-row {
    flex-direction: column;
    align-items: flex-start;
    gap: .35rem;
    padding: 1.15rem 1.25rem;
    border-bottom: 0;
    border-left: 1px solid var(--glacier-050);
  }

  .page-contact .quick-row:first-child {
    border-left: 0;
  }

  .page-contact .rhythm-figure {
    margin-top: 3rem;
  }

  .page-contact .record-panel {
    padding: 3rem 2.75rem;
  }

  .page-contact .record-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.5rem 3rem;
  }
}

@media (min-width: 960px) {
  .page-contact {
    padding-bottom: 10rem;
  }

  .page-contact .contact-hero {
    padding-top: 4rem;
  }

  .page-contact .contact-cols {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 3.5rem;
    align-items: start;
  }

  .page-contact .contact-figure {
    position: sticky;
    top: calc(var(--bar-h) + 1.5rem);
  }

  .page-contact .contact-fold .fold__summary {
    padding: 1.5rem .5rem;
  }

  .page-contact .contact-fold .fold__body {
    padding: 0 .5rem 2rem;
    max-width: 46em;
  }

  .page-contact .rhythm-step {
    grid-template-columns: 4rem minmax(0, 1fr);
    gap: .4rem 1.5rem;
    padding: 1.75rem .75rem;
  }

  .page-contact .record-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-item,
  .page-contact .channel-item:hover {
    transform: none;
  }

  .page-contact .channel-item,
  .page-contact .channel-item .copy-btn,
  .page-contact .rhythm-step,
  .page-contact .contact-fold .fold__summary,
  .page-contact .quick-tel,
  .page-contact .contact-shortcut a {
    transition: none;
  }
}