.page-contact {
  --contact-gap: clamp(18px, 2.6vw, 32px);
  --contact-band: clamp(44px, 6vw, 80px);
  color: var(--paper);
}

.page-contact .visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 首屏 ---------- */

.page-contact .breadcrumbs {
  font-size: 13px;
  color: var(--rock);
}

.page-contact .contact-intro {
  margin-top: clamp(22px, 3vw, 34px);
}

.page-contact .contact-intro .t-display {
  margin: 10px 0 0;
  max-width: 22ch;
}

.page-contact .contact-intro__lead {
  margin: 20px 0 0;
  max-width: 54ch;
  font-size: clamp(15px, 1.3vw, 17px);
  line-height: 1.8;
  color: rgba(230, 241, 245, .88);
}

.page-contact .contact-intro__chips {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 0;
  padding: 0;
}

/* ---------- 分屏主体 ---------- */

.page-contact .contact-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--contact-gap);
  margin-top: clamp(34px, 5vw, 58px);
}

.page-contact .contact-letter {
  padding: clamp(20px, 2.8vw, 32px);
  border-radius: var(--radius);
}

.page-contact .contact-letter__title {
  margin: 12px 0 0;
}

.page-contact .contact-letter__lede {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(230, 241, 245, .86);
  max-width: 44ch;
}

.page-contact .contact-template {
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.82;
  color: var(--paper);
  background:
    linear-gradient(180deg, rgba(7, 11, 20, .82), rgba(14, 23, 41, .82));
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--cyan);
  border-radius: var(--radius);
  padding: 16px 16px 16px 18px;
  margin: 20px 0 0;
  overflow-x: auto;
  white-space: pre;
  -webkit-overflow-scrolling: touch;
}

.page-contact .contact-template code {
  font: inherit;
  color: inherit;
  letter-spacing: 0;
}

.page-contact .contact-note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--rock);
  max-width: 52ch;
}

.page-contact .contact-side {
  display: grid;
  gap: var(--contact-gap);
  align-content: start;
}

.page-contact .contact-side__label {
  color: var(--gold);
  margin: 0;
}

.page-contact .contact-card {
  padding: clamp(18px, 2.4vw, 26px);
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
}

.page-contact .contact-card::after {
  content: "";
  position: absolute;
  inset: auto -30% -60% auto;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, .16), transparent 66%);
  pointer-events: none;
}

.page-contact .contact-card--mail {
  background: var(--moss);
  color: var(--ivory);
}

.page-contact .contact-card--phone {
  background: var(--clay);
  color: var(--ink-900);
}

.page-contact .contact-card .t-h3 {
  margin: 0;
  font-size: clamp(17px, 1.5vw, 20px);
  line-height: 1.4;
}

.page-contact .contact-card__val {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(13px, 1.3vw, 15px);
  letter-spacing: .02em;
  margin: 14px 0 12px;
  padding: 9px 12px;
  border-radius: var(--radius);
  word-break: break-all;
  background: rgba(7, 11, 20, .4);
  border: 1px solid rgba(255, 255, 255, .16);
}

.page-contact .contact-card--phone .contact-card__val {
  background: rgba(7, 11, 20, .14);
  border-color: rgba(7, 11, 20, .22);
}

.page-contact .contact-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
}

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

/* ---------- 回复时段与处理顺序 ---------- */

.page-contact .contact-reply {
  margin-top: var(--contact-band);
}

.page-contact .contact-reply .section__head {
  align-items: baseline;
}

.page-contact .contact-reply__lede {
  margin: 14px 0 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(230, 241, 245, .85);
}

.page-contact .contact-steps {
  margin-top: clamp(20px, 3vw, 30px);
  border-top: 1px solid var(--line);
}

.page-contact .contact-step {
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .contact-step summary {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 14px;
  min-height: 52px;
  padding: 12px 4px;
  cursor: pointer;
  list-style: none;
  border-radius: var(--radius);
  transition: background-color 180ms var(--ease);
}

.page-contact .contact-step summary::-webkit-details-marker {
  display: none;
}

.page-contact .contact-step summary:hover {
  background: rgba(127, 233, 224, .05);
}

.page-contact .contact-step summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-contact .contact-step__idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--gold);
  padding: 4px 9px;
  border: 1px solid rgba(242, 160, 61, .45);
  border-radius: var(--radius);
  flex: none;
}

.page-contact .contact-step__name {
  font-size: clamp(15px, 1.3vw, 17px);
  font-weight: 600;
  color: var(--paper);
}

.page-contact .contact-step__meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--rock);
  text-transform: uppercase;
}

.page-contact .contact-step summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--cyan);
  flex: none;
}

.page-contact .contact-step[open] summary::after {
  content: "\2212";
}

.page-contact .contact-step p {
  margin: 2px 0 18px;
  padding-right: 8px;
  max-width: 72ch;
  font-size: 14px;
  line-height: 1.82;
  color: rgba(230, 241, 245, .8);
}

/* ---------- 运营主体与联系地点 ---------- */

.page-contact .contact-ops {
  margin-top: var(--contact-band);
}

.page-contact .contact-ops__grid {
  gap: var(--contact-gap);
  margin-top: clamp(20px, 3vw, 30px);
}

.page-contact .contact-ops__card {
  padding: clamp(20px, 2.8vw, 30px);
  border-radius: var(--radius);
}

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

.page-contact .contact-ops__body {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.8;
}

.page-contact .card--ivory .contact-ops__label {
  color: rgba(7, 11, 20, .55);
}

.page-contact .card--ivory .contact-ops__body {
  color: rgba(7, 11, 20, .82);
}

.page-contact .contact-ops__facts {
  margin: 22px 0 0;
  display: grid;
  gap: 16px;
  padding-top: 20px;
  border-top: 1px solid rgba(7, 11, 20, .16);
}

.page-contact .contact-ops__facts dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: rgba(7, 11, 20, .5);
}

.page-contact .contact-ops__facts dd {
  margin: 6px 0 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink-900);
}

.page-contact .contact-ops__mono {
  font-family: var(--font-mono);
}

.page-contact .contact-ops__checklist {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-contact .contact-ops__checklist li {
  padding-left: 14px;
  border-left: 2px solid rgba(127, 233, 224, .45);
}

.page-contact .contact-ops__checklist strong {
  display: block;
  font-size: 15px;
  line-height: 1.5;
  color: var(--paper);
}

.page-contact .contact-ops__checklist span {
  display: block;
  margin-top: 6px;
  font-size: 13.5px;
  line-height: 1.78;
  color: rgba(230, 241, 245, .78);
}

.page-contact .contact-ops__checklist a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(127, 233, 224, .4);
}

.page-contact .contact-ops__checklist a:hover {
  border-bottom-color: var(--cyan);
}

.page-contact .contact-ops__checklist a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  border-radius: 2px;
}

/* ---------- 通栏收束 ---------- */

.page-contact .contact-closeband {
  margin-top: var(--contact-band);
  padding: 0 0 clamp(28px, 4vw, 48px);
}

.page-contact .contact-closeband__frame {
  margin: 0;
  border-radius: 0;
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-contact .contact-ops__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }
}

@media (min-width: 960px) {
  .page-contact .contact-split {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .92fr);
    align-items: start;
  }

  .page-contact .contact-template {
    font-size: 13px;
  }

  .page-contact .contact-step summary {
    flex-wrap: nowrap;
    padding: 16px 8px;
  }

  .page-contact .contact-step p {
    padding-left: 62px;
    margin-top: -4px;
  }
}

@media (max-width: 480px) {
  .page-contact .contact-intro .t-display {
    max-width: 100%;
  }

  .page-contact .contact-step__meta {
    width: 100%;
    padding-left: 44px;
  }

  .page-contact .contact-card__val {
    font-size: 12.5px;
  }
}