.page-contact {
  padding-top: calc(var(--header-h) + clamp(20px, 4vw, 44px));
  padding-bottom: 0;
  background: var(--deep);
  color: var(--paper);
  overflow-x: hidden;
}

.page-contact .contact-top {
  padding-bottom: clamp(40px, 7vw, 76px);
}

.page-contact .breadcrumb {
  margin-bottom: clamp(20px, 4vw, 34px);
}

.page-contact .breadcrumb__item--current {
  color: var(--cyan);
}

.page-contact .headline--xl {
  margin: 10px 0 0;
  max-width: 17ch;
  font-weight: 800;
  letter-spacing: -.015em;
  line-height: 1.04;
  font-size: clamp(2.1rem, 6.4vw, 4.2rem);
}

.page-contact .eyebrow {
  color: var(--cyan);
}

.page-contact .eyebrow--ink {
  color: var(--ink);
  opacity: .62;
}

.page-contact .contact-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 5vw, 56px);
  margin-top: clamp(28px, 5vw, 48px);
}

.page-contact .contact-hero__text .prose + .prose {
  margin-top: 16px;
}

.page-contact .contact-hero__frame {
  border: 2px solid var(--hairline-strong);
  box-shadow: 10px 10px 0 var(--carbon);
}

.page-contact .contact-hero__media .fig-cap {
  margin-top: 12px;
  color: rgba(244, 241, 234, .58);
}

.page-contact .quicklist {
  list-style: none;
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding: 0;
  border-top: 1px solid var(--hairline-strong);
}

.page-contact .quicklist__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 13px 0;
  border-bottom: 1px solid var(--hairline);
}

.page-contact .quicklist__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: rgba(244, 241, 234, .5);
}

.page-contact .quicklist__val {
  font-family: var(--font-mono);
  font-size: clamp(.95rem, 2.4vw, 1.12rem);
  color: var(--paper);
  word-break: break-word;
}

/* 联系渠道 */
.page-contact .band-paper {
  background: var(--paper);
  color: var(--ink);
  border-top: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
}

.page-contact .band-deep {
  background: var(--deep);
  color: var(--paper);
}

.page-contact .band-paper .headline {
  color: var(--ink);
}

.page-contact .band-lead {
  margin-top: 16px;
  max-width: 46ch;
}

.page-contact .channels {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  margin-top: clamp(26px, 4vw, 40px);
  border-top: 2px solid rgba(16, 20, 24, .35);
}

.page-contact .channel {
  position: relative;
  padding: 26px 20px 30px;
  border-bottom: 2px solid rgba(16, 20, 24, .35);
  border-left: 0;
  transition: background .18s ease, transform .18s ease;
}

.page-contact .channel:hover,
.page-contact .channel:focus-within {
  background: rgba(53, 240, 208, .18);
  transform: translateX(4px);
}

.page-contact .channel__label {
  display: inline-block;
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .28em;
  color: rgba(16, 20, 24, .5);
  margin-bottom: 10px;
  padding-left: 2px;
}

.page-contact .channel__title {
  margin: 0 0 10px;
  font-size: clamp(1.2rem, 3.4vw, 1.6rem);
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--ink);
}

.page-contact .channel__value {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: clamp(.92rem, 2.3vw, 1.06rem);
  line-height: 1.6;
  color: var(--ink);
  word-break: break-word;
  border-left: 3px solid var(--coral);
  padding-left: 10px;
}

.page-contact .channel__use {
  margin: 0;
  font-size: .95rem;
  line-height: 1.75;
  max-width: 40ch;
  color: rgba(16, 20, 24, .8);
}

.page-contact .channel__hint {
  margin: 14px 0 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.7;
  letter-spacing: .02em;
  color: rgba(16, 20, 24, .55);
}

/* 响应时段 */
.page-contact .hours {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-contact .hours__clock {
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-wrap: wrap;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--cyan);
}

.page-contact .hours__num {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 8vw, 3.2rem);
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--cyan);
  text-shadow: 0 0 18px rgba(53, 240, 208, .35);
  line-height: 1;
}

.page-contact .hours__dash {
  font-family: var(--font-mono);
  font-size: clamp(1.2rem, 4vw, 1.8rem);
  color: rgba(244, 241, 234, .4);
}

.page-contact .hours__unit {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .26em;
  color: rgba(244, 241, 234, .55);
  margin-left: 4px;
}

.page-contact .hours__body .headline {
  margin: 0 0 14px;
  font-size: clamp(1.4rem, 4vw, 2rem);
  font-weight: 700;
}

.page-contact .hours__body .prose + .prose {
  margin-top: 14px;
}

/* 咨询清单 */
.page-contact .brief {
  list-style: none;
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  counter-reset: brief;
}

.page-contact .brief__item {
  position: relative;
  padding: 22px 18px 22px 20px;
  border-top: 1px solid var(--hairline-strong);
  border-left: 2px solid transparent;
  transition: border-color .18s ease, background .18s ease;
}

.page-contact .brief__item:last-child {
  border-bottom: 1px solid var(--hairline-strong);
}

.page-contact .brief__item:hover,
.page-contact .brief__item:focus-within {
  border-left-color: var(--cyan);
  background: var(--cyan-wash);
}

.page-contact .brief__idx {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--coral);
  margin-bottom: 8px;
}

.page-contact .brief__title {
  margin: 0 0 8px;
  font-size: clamp(1.05rem, 2.8vw, 1.3rem);
  font-weight: 700;
  color: var(--paper);
}

.page-contact .brief__desc {
  margin: 0;
  font-size: .95rem;
  line-height: 1.75;
  max-width: 42ch;
  color: rgba(244, 241, 234, .74);
}

/* 合作通道 tabs */
.page-contact .coop {
  margin-top: clamp(28px, 4vw, 44px);
}

.page-contact .coop__tablist {
  display: flex;
  flex-wrap: wrap;
  border-bottom: 2px solid var(--hairline-strong);
}

.page-contact .coop__tab {
  appearance: none;
  background: none;
  border: 0;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  padding: 13px 16px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .14em;
  color: rgba(244, 241, 234, .58);
  cursor: pointer;
  transition: color .18s ease, border-color .18s ease;
}

.page-contact .coop__tab:hover {
  color: var(--paper);
}

.page-contact .coop__tab[aria-selected="true"] {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

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

.page-contact .coop__panels {
  padding-top: clamp(22px, 3vw, 32px);
}

.page-contact .coop__panel {
  border-left: 2px solid var(--hairline-strong);
  padding-left: clamp(16px, 3vw, 26px);
}

.page-contact .coop__panel[hidden] {
  display: none;
}

.page-contact .coop__panel--primary {
  border-left-color: var(--cyan);
}

.page-contact .coop__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.page-contact .coop__list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
}

.page-contact .coop__list li {
  position: relative;
  padding: 9px 0 9px 20px;
  font-size: .95rem;
  line-height: 1.7;
  color: rgba(244, 241, 234, .78);
  border-bottom: 1px dashed var(--hairline);
}

.page-contact .coop__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 17px;
  width: 9px;
  height: 2px;
  background: var(--cyan);
}

.page-contact .coop__contact {
  margin: 18px 0 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--coral);
  word-break: break-word;
}

.page-contact .coop-figure {
  margin: clamp(30px, 5vw, 48px) 0 0;
}

.page-contact .coop-figure__frame {
  border: 2px solid var(--hairline-strong);
  box-shadow: 10px 10px 0 var(--carbon);
}

.page-contact .coop-figure .fig-cap {
  margin-top: 12px;
  color: rgba(244, 241, 234, .58);
}

/* 首次接触流程 */
.page-contact .track {
  list-style: none;
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
}

.page-contact .track__item {
  position: relative;
  padding: 26px 18px 24px 20px;
  border-top: 0;
  border-left: 2px solid rgba(16, 20, 24, .22);
}

.page-contact .track__item::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 30px;
  width: 12px;
  height: 12px;
  background: var(--ink);
}

.page-contact .track__item--last::before {
  background: var(--coral);
}

.page-contact .track__idx {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .22em;
  color: rgba(16, 20, 24, .55);
  margin-bottom: 8px;
}

.page-contact .track__title {
  margin: 0 0 8px;
  font-size: clamp(1.05rem, 2.8vw, 1.28rem);
  font-weight: 700;
  color: var(--ink);
}

.page-contact .track__desc {
  margin: 0;
  font-size: .95rem;
  line-height: 1.75;
  max-width: 34ch;
  color: rgba(16, 20, 24, .8);
}

/* 备案 */
.page-contact .legal {
  text-align: left;
}

.page-contact .legal__title {
  margin: 0 0 14px;
  font-size: clamp(1.3rem, 3.6vw, 1.8rem);
  font-weight: 700;
}

.page-contact .legal__lede {
  max-width: 44ch;
}

.page-contact .legal__icp {
  margin: clamp(22px, 4vw, 34px) 0 0;
  font-family: var(--font-mono);
  font-size: clamp(.9rem, 2.4vw, 1.05rem);
  letter-spacing: .24em;
  color: var(--cyan);
  padding-top: 16px;
  border-top: 1px solid var(--hairline-strong);
}

.page-contact .legal__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: clamp(22px, 4vw, 32px) 0 0;
}

@media (min-width: 640px) {
  .page-contact .quicklist__row {
    grid-template-columns: 118px minmax(0, 1fr);
    gap: 16px;
    align-items: baseline;
  }

  .page-contact .brief {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .brief__item:nth-child(-n + 2) {
    border-top: 1px solid var(--hairline-strong);
  }
}

@media (min-width: 860px) {
  .page-contact .contact-hero {
    grid-template-columns: minmax(0, 5.4fr) minmax(0, 4.6fr);
    align-items: start;
  }

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

  .page-contact .channel {
    border-bottom: 0;
    border-left: 2px solid rgba(16, 20, 24, .35);
    padding: 30px 24px 34px;
  }

  .page-contact .channel:first-child {
    border-left: 0;
    padding-left: 0;
  }

  .page-contact .hours {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
  }

  .page-contact .track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    border-top: 2px solid rgba(16, 20, 24, .3);
  }

  .page-contact .track__item {
    border-top: 0;
    border-left: 2px solid rgba(16, 20, 24, .22);
    padding: 30px 20px 20px;
  }

  .page-contact .track__item::before {
    top: -8px;
    left: -7px;
  }

  .page-contact .track__item:first-child {
    padding-left: 0;
  }

  .page-contact .track__item:first-child::before {
    left: 0;
  }
}

@media (max-width: 759px) {
  .page-contact .track__item:first-child {
    border-left-color: transparent;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel,
  .page-contact .brief__item,
  .page-contact .coop__tab {
    transition: none;
  }
}