.page-contact {
  position: relative;
  padding: 40px 0 104px;
  color: var(--text);
  font-family: var(--font-body);
  background:
    radial-gradient(120% 55% at 8% 0%, rgba(47, 243, 214, .06), transparent 62%),
    var(--ink-900);
  border-top: 1px solid var(--line-soft);
}

.page-contact .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 26px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.page-contact .breadcrumb a {
  color: var(--text-dim);
  text-decoration: none;
  transition: color 160ms var(--ease);
}

.page-contact .breadcrumb a:hover,
.page-contact .breadcrumb a:focus-visible {
  color: var(--cyan);
}

.page-contact .breadcrumb span[aria-current="page"] {
  color: var(--cyan);
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  max-width: 820px;
  margin-bottom: 36px;
}

.page-contact .contact-hero__tag {
  position: relative;
  margin: 0 0 18px;
  padding-left: 30px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-contact .contact-hero__tag::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 22px;
  height: 1px;
  background: var(--cyan);
}

.page-contact .contact-hero__title {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 6.4vw, 62px);
  line-height: 1.06;
  letter-spacing: -.015em;
  color: var(--white);
}

.page-contact .contact-hero__lede {
  margin: 0;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.9;
  color: var(--text);
}

.page-contact .contact-banner {
  position: relative;
  margin: 0 0 56px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink-800);
}

.page-contact .contact-banner img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(.88);
}

.page-contact .contact-banner::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(6, 17, 15, .1) 0%, rgba(6, 17, 15, .55) 100%);
  pointer-events: none;
}

/* ---------- 主结构 ---------- */

.page-contact .contact-body {
  display: grid;
  gap: 36px;
  min-width: 0;
}

.page-contact .contact-flow {
  display: grid;
  gap: clamp(48px, 7vw, 80px);
  min-width: 0;
}

/* ---------- 索引栏 ---------- */

.page-contact .contact-index {
  min-width: 0;
}

.page-contact .contact-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .contact-index__list {
  list-style: none;
  margin: 0;
  padding: 0 0 2px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-contact .contact-index__list::-webkit-scrollbar {
  display: none;
}

.page-contact .contact-index__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-glass);
  color: var(--text-dim);
  font-size: 13px;
  text-decoration: none;
  transition: color 160ms var(--ease), border-color 160ms var(--ease), background 160ms var(--ease);
}

.page-contact .contact-index__link:hover,
.page-contact .contact-index__link:focus-visible {
  color: var(--white);
  border-color: var(--line-strong);
}

.page-contact .contact-index__link.is-active {
  color: var(--white);
  border-color: var(--line-strong);
  background: rgba(47, 243, 214, .09);
}

.page-contact .contact-index__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

/* ---------- 章节通用 ---------- */

.page-contact .contact-section {
  min-width: 0;
  scroll-margin-top: 120px;
}

.page-contact .contact-section__head {
  margin-bottom: 26px;
}

.page-contact .contact-section__num {
  position: relative;
  display: block;
  margin-bottom: 12px;
  padding-left: 30px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-contact .contact-section__num::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 22px;
  height: 1px;
  background: var(--cyan);
}

.page-contact .contact-section__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 3.4vw, 30px);
  line-height: 1.24;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-contact .contact-section__lead {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-dim);
}

/* ---------- 渠道 ---------- */

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

.page-contact .channel {
  background: var(--surface-1);
  padding: 22px 20px 24px;
  min-width: 0;
}

.page-contact .channel__coord {
  display: inline-block;
  margin-bottom: 16px;
  padding: 3px 7px;
  border: 1px solid rgba(47, 243, 214, .3);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-contact .channel__label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .channel__value {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.6;
  color: var(--white);
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}

.page-contact .channel__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-dim);
}

/* ---------- 入口卡片 ---------- */

.page-contact .route-grid {
  display: grid;
  gap: 14px;
}

.page-contact .route {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-glass);
  min-width: 0;
  transition: border-color 160ms var(--ease), transform 160ms var(--ease), background 160ms var(--ease);
}

.page-contact .route:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
  background: rgba(20, 48, 42, .72);
}

.page-contact .route__summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  letter-spacing: .01em;
  color: var(--white);
}

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

.page-contact .route__summary::after {
  content: "+";
  margin-left: auto;
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--orange);
}

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

.page-contact .route__summary:focus-visible {
  outline: 1px solid var(--line-strong);
  outline-offset: -2px;
}

.page-contact .route__coord {
  flex-shrink: 0;
  padding: 3px 6px;
  border: 1px solid rgba(47, 243, 214, .28);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--cyan);
}

.page-contact .route__title {
  min-width: 0;
}

.page-contact .route__body {
  padding: 0 18px 20px;
  border-top: 1px solid var(--line-soft);
}

.page-contact .route__body p {
  margin: 16px 0 14px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--text-dim);
}

.page-contact .route__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-contact .route__list li {
  position: relative;
  padding-left: 17px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text);
}

.page-contact .route__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .66em;
  width: 6px;
  height: 6px;
  border: 1px solid var(--teal);
  transform: rotate(45deg);
}

.page-contact .route__k {
  margin-right: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--mist);
}

/* ---------- 回复时间 ---------- */

.page-contact .timing {
  display: grid;
  gap: 30px;
}

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

.page-contact .timing-list li {
  display: grid;
  gap: 4px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .timing-list__time {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--orange);
  font-variant-numeric: tabular-nums;
}

.page-contact .timing-list__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text);
}

.page-contact .timing__figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink-800);
}

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

/* ---------- 合作准备（纸白） ---------- */

.page-contact .contact-section--paper {
  padding: 30px 22px 34px;
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--ink-800);
}

.page-contact .contact-section--paper .contact-section__num {
  color: var(--teal);
}

.page-contact .contact-section--paper .contact-section__num::before {
  background: var(--teal);
}

.page-contact .contact-section--paper .contact-section__title {
  color: var(--ink-900);
}

.page-contact .contact-section--paper .contact-section__lead {
  color: #3E5651;
}

.page-contact .prep-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 22px;
}

.page-contact .prep-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
}

.page-contact .prep-item__num {
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: #0C6B60;
  font-variant-numeric: tabular-nums;
}

.page-contact .prep-item__title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink-900);
}

.page-contact .prep-item__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: #3E5651;
}

.page-contact .prep-foot {
  margin: 28px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: #3E5651;
}

.page-contact .prep-foot a {
  color: #0C6B60;
  text-decoration: none;
  border-bottom: 1px solid rgba(12, 107, 96, .38);
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

.page-contact .prep-foot a:hover,
.page-contact .prep-foot a:focus-visible {
  color: var(--ink-900);
  border-color: var(--ink-900);
}

/* ---------- 服务范围 ---------- */

.page-contact .coverage-stats {
  list-style: none;
  margin: 0 0 26px;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-contact .coverage-stats .stat {
  display: block;
  padding: 20px 20px 22px;
  background: var(--ink-800);
}

.page-contact .coverage-stats .stat__value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(38px, 7vw, 56px);
  font-weight: 700;
  line-height: 1;
  color: var(--white);
  font-variant-numeric: tabular-nums;
}

.page-contact .coverage-stats .stat__label {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--text-dim);
}

.page-contact .coverage-copy {
  display: grid;
  gap: 16px;
}

.page-contact .coverage-copy p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-dim);
}

.page-contact .contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

/* ---------- 断点 ---------- */

@media (min-width: 600px) {
  .page-contact .timing-list li {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 18px;
    align-items: baseline;
  }

  .page-contact .contact-section--paper {
    padding: 38px 32px 42px;
  }
}

@media (min-width: 720px) {
  .page-contact {
    padding-top: 52px;
  }

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

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

@media (min-width: 880px) {
  .page-contact .route-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .page-contact .timing {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: 44px;
    align-items: start;
  }

  .page-contact .prep-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 26px 36px;
  }

  .page-contact .coverage-copy {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px 34px;
  }
}

@media (min-width: 1024px) {
  .page-contact {
    padding: 64px 0 128px;
  }

  .page-contact .contact-body {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: 64px;
    align-items: start;
  }

  .page-contact .contact-index {
    position: sticky;
    top: 112px;
  }

  .page-contact .contact-index__title {
    padding-bottom: 10px;
    border-bottom: 1px solid var(--line-soft);
  }

  .page-contact .contact-index__list {
    flex-direction: column;
    gap: 4px;
    overflow: visible;
  }

  .page-contact .contact-index__link {
    width: 100%;
    white-space: normal;
    justify-content: flex-start;
    padding: 9px 12px;
    background: transparent;
    border-color: transparent;
    border-left: 1px solid var(--line);
  }

  .page-contact .contact-index__link:hover,
  .page-contact .contact-index__link:focus-visible {
    border-left-color: var(--teal);
    background: var(--surface-glass);
  }

  .page-contact .contact-index__link.is-active {
    border-left-color: var(--cyan);
    background: rgba(47, 243, 214, .07);
  }

  .page-contact .contact-hero {
    margin-bottom: 44px;
  }

  .page-contact .contact-banner {
    margin-bottom: 72px;
  }
}

@media (min-width: 1240px) {
  .page-contact .contact-body {
    grid-template-columns: 252px minmax(0, 1fr);
    gap: 80px;
  }

  .page-contact .contact-section--paper {
    padding: 48px 48px 52px;
  }

  .page-contact .channel {
    padding: 26px 24px 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .route,
  .page-contact .contact-index__link,
  .page-contact .prep-foot a {
    transition: none;
  }

  .page-contact .route:hover {
    transform: none;
  }
}