.page-contact {
  --pc-radius: 4px;
  --pc-pad: 22px;
  background: var(--black);
  color: var(--bone);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  display: grid;
  grid-template-rows: 1fr auto;
  min-height: 62vh;
  overflow: hidden;
  background: var(--carbon);
}

.page-contact .contact-hero__media {
  grid-area: 1 / 1 / -1 / -1;
  position: relative;
}

.page-contact .contact-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10, 10, 10, .94) 2%, rgba(10, 10, 10, .58) 42%, rgba(10, 10, 10, .18) 100%);
}

.page-contact .contact-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-contact .contact-hero__panel {
  grid-area: 1 / 1 / 2 / 2;
  align-self: end;
  position: relative;
  z-index: 2;
  padding: 32px var(--gutter) 34px;
  display: grid;
  gap: 12px;
}

.page-contact .contact-hero__path {
  margin: 0;
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .contact-hero__path a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 140ms var(--ease), border-color 140ms var(--ease);
}

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

.page-contact .contact-hero__path span {
  padding: 0 8px;
  color: var(--line);
}

.page-contact .contact-hero__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--fluoro);
}

.page-contact .contact-hero__title {
  margin: 0;
  font-size: clamp(36px, 9vw, 74px);
  font-weight: 900;
  line-height: .98;
  letter-spacing: -.02em;
}

.page-contact .contact-hero__lede {
  margin: 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.75;
  color: var(--bone);
  opacity: .88;
}

.page-contact .contact-hero__rule {
  grid-area: 2 / 1 / 3 / 2;
  position: relative;
  z-index: 3;
  height: 8px;
  background: var(--red);
}

/* ---------- 章节骨架 ---------- */
.page-contact .contact-sec {
  padding-top: 68px;
}

.page-contact .contact-sec--last {
  padding-bottom: 84px;
}

.page-contact .contact-sec__head {
  display: grid;
  gap: 16px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 30px;
}

.page-contact .contact-sec__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--mist);
  margin-bottom: 10px;
}

.page-contact .contact-sec__title {
  margin: 0;
  font-size: clamp(24px, 5.4vw, 38px);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -.02em;
}

.page-contact .contact-sec__lede {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 三张联系卡 ---------- */
.page-contact .contact-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}

.page-contact .contact-card {
  display: grid;
  align-content: start;
  gap: 12px;
  padding: var(--pc-pad);
  background: var(--carbon);
  border: 1px solid var(--line);
  border-radius: var(--pc-radius);
  transition: background 140ms var(--ease), border-color 140ms var(--ease), color 140ms var(--ease);
}

.page-contact .contact-card:hover {
  background: var(--bone);
  border-color: var(--bone);
  color: var(--black);
}

.page-contact .contact-card__kind {
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--red);
  text-transform: uppercase;
}

.page-contact .contact-card__title {
  margin: 0;
  font-size: 21px;
  font-weight: 800;
  letter-spacing: -.01em;
}

.page-contact .contact-card__value {
  margin: 0;
  padding: 12px 0;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.55;
  word-break: break-word;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-card:hover .contact-card__value {
  border-color: rgba(10, 10, 10, .22);
}

.page-contact .contact-card__note {
  margin: 0;
  font-size: 13px;
  line-height: 1.72;
  color: var(--mist);
}

.page-contact .contact-card:hover .contact-card__note {
  color: #4B4B4B;
}

/* ---------- 值班时段 ---------- */
.page-contact .hours {
  display: grid;
  gap: 28px;
}

.page-contact .hours__main {
  padding: var(--pc-pad);
  background: var(--red);
  border-radius: var(--pc-radius);
  color: var(--bone);
}

.page-contact .hours__big {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(34px, 8vw, 56px);
  font-weight: 700;
  letter-spacing: -.01em;
  line-height: 1.05;
  font-variant-numeric: tabular-nums;
}

.page-contact .hours__big span {
  padding: 0 .12em;
  color: rgba(244, 241, 236, .55);
}

.page-contact .hours__sub {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(244, 241, 236, .82);
}

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

.page-contact .hours__item {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  display: grid;
  gap: 6px;
}

.page-contact .hours__item:first-child {
  border-top: 1px solid var(--line);
}

.page-contact .hours__key {
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .hours__val {
  font-family: var(--font-mono);
  font-size: 17px;
  color: var(--fluoro);
  font-variant-numeric: tabular-nums;
}

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

.page-contact .hours__desc a {
  color: var(--bone);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color 140ms var(--ease), border-color 140ms var(--ease);
}

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

/* ---------- 提交清单 ---------- */
.page-contact .checklist-layout {
  display: grid;
  gap: 32px;
}

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

.page-contact .checklist__item {
  counter-increment: pcchk;
  position: relative;
  padding: 18px 0 18px 52px;
  border-bottom: 1px solid var(--line);
}

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

.page-contact .checklist__item::before {
  content: "0" counter(pcchk);
  position: absolute;
  left: 0;
  top: 21px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--mist);
  transition: color 200ms var(--ease);
}

.page-contact .checklist__item:hover::before {
  color: var(--fluoro);
}

.page-contact .checklist__title {
  display: block;
  font-size: 16px;
  font-weight: 800;
  margin-bottom: 6px;
}

.page-contact .checklist__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .checklist__text a {
  color: var(--bone);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color 140ms var(--ease), border-color 140ms var(--ease);
}

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

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

.page-contact .checklist-figure__frame {
  border: 1px solid var(--line);
  border-radius: var(--pc-radius);
  overflow: hidden;
  background: var(--graphite);
}

.page-contact .checklist-figure__frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-contact .checklist-figure__cap {
  margin-top: 12px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .contact-tip {
  margin: 28px 0 0;
  padding: 16px 18px;
  border-left: 3px solid var(--fluoro);
  background: var(--carbon);
  font-size: 13px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .contact-tip a {
  color: var(--bone);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}

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

/* ---------- 合作与纠错 ---------- */
.page-contact .collab {
  display: grid;
  gap: 26px;
}

.page-contact .collab__text {
  display: grid;
  gap: 14px;
  font-size: 15px;
  line-height: 1.82;
  color: var(--mist);
}

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

.page-contact .collab__text a {
  color: var(--bone);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color 140ms var(--ease), border-color 140ms var(--ease);
}

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

.page-contact .mailtpl {
  background: var(--carbon);
  border: 1px solid var(--line);
  border-radius: var(--pc-radius);
}

.page-contact .mailtpl > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px var(--pc-pad);
  font-size: 15px;
  font-weight: 700;
  transition: color 140ms var(--ease);
}

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

.page-contact .mailtpl > summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--fluoro);
}

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

.page-contact .mailtpl > summary:hover {
  color: var(--fluoro);
}

.page-contact .mailtpl__body {
  margin: 0;
  padding: 0 var(--pc-pad) 8px;
  display: grid;
}

.page-contact .mailtpl__row {
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.page-contact .mailtpl__row dt {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--fluoro);
  word-break: break-word;
}

.page-contact .mailtpl__row dd {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.72;
  color: var(--mist);
}

/* ---------- 到访 ---------- */
.page-contact .visit {
  display: grid;
  gap: 24px;
}

.page-contact .visit__addr {
  padding: var(--pc-pad);
  background: var(--graphite);
  border: 1px solid var(--line);
  border-radius: var(--pc-radius);
}

.page-contact .visit__label {
  display: block;
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--mist);
  margin-bottom: 12px;
}

.page-contact .visit__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1.6;
  color: var(--bone);
  word-break: break-word;
}

.page-contact .visit__notes {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .visit__notes li {
  position: relative;
  padding-left: 22px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .visit__notes li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 10px;
  height: 1px;
  background: var(--red);
}

/* ---------- 进入视口动效 ---------- */
.has-js .page-contact [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
}

.has-js .page-contact [data-reveal].is-revealed {
  opacity: 1;
  transform: none;
  transition: opacity 320ms var(--ease), transform 320ms var(--ease);
}

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

  .page-contact .contact-sec {
    padding-top: 96px;
  }

  .page-contact .contact-sec--last {
    padding-bottom: 120px;
  }

  .page-contact .contact-sec__head {
    grid-template-columns: minmax(0, 4fr) minmax(0, 6fr);
    align-items: end;
    gap: 48px;
    padding-bottom: 30px;
    margin-bottom: 40px;
  }

  .page-contact .contact-sec__num {
    margin-bottom: 14px;
  }

  .page-contact .hours {
    grid-template-columns: minmax(0, 4fr) minmax(0, 6fr);
    gap: 40px;
    align-items: start;
  }

  .page-contact .hours__main {
    padding: 32px 28px;
  }

  .page-contact .checklist-layout {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 48px;
    align-items: start;
  }

  .page-contact .collab {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 48px;
    align-items: start;
  }

  .page-contact .visit {
    grid-template-columns: minmax(0, 4fr) minmax(0, 6fr);
    gap: 40px;
    align-items: start;
  }
}

@media (min-width: 1100px) {
  .page-contact .contact-hero {
    min-height: 70vh;
  }

  .page-contact .contact-hero__panel {
    padding: 0 var(--gutter) 56px;
    gap: 16px;
    max-width: 62em;
  }

  .page-contact .contact-hero__lede {
    font-size: 16px;
  }

  .page-contact .contact-sec {
    padding-top: 118px;
  }

  .page-contact .contact-card {
    padding: 26px var(--pc-pad) 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .has-js .page-contact [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .page-contact .contact-card,
  .page-contact .checklist__item::before {
    transition: none;
  }
}