.page-contact {
  background: var(--ink-800);
  color: var(--paper);
  padding-top: calc(var(--shell-top) + 18px);
  overflow-x: clip;
}

.page-contact .breadcrumb {
  padding-top: 6px;
  margin-bottom: clamp(14px, 2.4vw, 22px);
  font-size: 13px;
  color: var(--fog);
}

.page-contact .breadcrumb a {
  color: var(--fog);
  text-decoration: none;
  transition: color .18s var(--ease);
}

.page-contact .breadcrumb a:hover {
  color: var(--orange);
}

.page-contact a:focus-visible,
.page-contact button:focus-visible,
.page-contact input:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

.page-contact .section--prep a:focus-visible,
.page-contact .section--prep input:focus-visible {
  outline-color: var(--ink-900);
}

/* 首屏到达感 */
.page-contact .contact-arrival {
  padding-top: clamp(6px, 1.6vw, 16px);
}

.page-contact .arrival-grid {
  display: grid;
  gap: clamp(26px, 5vw, 54px);
  align-items: end;
}

.page-contact .arrival-title {
  margin: 14px 0 18px;
  font-size: clamp(42px, 7.2vw, 92px);
  line-height: .94;
  letter-spacing: -.02em;
}

.page-contact .arrival-lead {
  max-width: 44ch;
  color: var(--fog);
}

.page-contact .channel-list {
  list-style: none;
  margin: clamp(24px, 4vw, 36px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

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

.page-contact .channel__key {
  color: var(--orange);
  font-size: 12px;
  letter-spacing: .12em;
}

.page-contact .channel__val {
  font-size: clamp(19px, 2.6vw, 28px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -.01em;
  word-break: break-word;
}

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

.page-contact .arrival-media .media-frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
}

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

/* 合作类型 */
.page-contact .section--coop {
  background: var(--slate);
}

.page-contact .coop-lead,
.page-contact .fix-lead,
.page-contact .prep-lead {
  max-width: 56ch;
  margin-top: 14px;
  color: var(--fog);
}

.page-contact .coop-tabs {
  margin-top: clamp(22px, 3.4vw, 32px);
}

.page-contact .coop-tabs .tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  border: 0;
}

.page-contact .coop-tabs .tab {
  appearance: none;
  padding: 10px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: var(--ink-800);
  color: var(--fog);
  font: inherit;
  font-size: 14px;
  letter-spacing: .02em;
  cursor: pointer;
  transition: color .18s var(--ease), background .18s var(--ease), border-color .18s var(--ease);
}

.page-contact .coop-tabs .tab:hover {
  color: var(--paper);
  border-color: var(--orange);
}

.page-contact .coop-tabs .tab[aria-selected="true"] {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--ink-900);
  font-weight: 700;
}

.page-contact .coop-panel {
  margin-top: clamp(18px, 2.6vw, 26px);
  display: grid;
  gap: 16px;
}

.page-contact .coop-card {
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--ink-800);
  color: var(--paper);
}

.page-contact .coop-card--paper {
  background: var(--paper);
  border-color: transparent;
  color: var(--ink-800);
}

.page-contact .coop-card__title {
  margin: 0 0 12px;
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--orange);
}

.page-contact .coop-card--paper .coop-card__title {
  color: var(--slate);
}

.page-contact .coop-list {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 8px;
  font-size: 15px;
  line-height: 1.7;
}

.page-contact .coop-list li::marker {
  color: var(--orange);
}

.page-contact .coop-card--paper .coop-list li::marker {
  color: var(--slate-soft);
}

.page-contact .coop-note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
  line-height: 1.7;
  color: var(--fog);
}

/* 纠错流程 */
.page-contact .fix-grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}

.page-contact .fix-steps {
  list-style: none;
  margin: clamp(22px, 3vw, 30px) 0 0;
  padding: 0;
}

.page-contact .fix-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

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

.page-contact .fix-step .index-num {
  color: var(--orange);
  font-size: 12px;
  letter-spacing: .1em;
  padding-top: 4px;
}

.page-contact .fix-step__body h3 {
  margin: 0 0 6px;
  font-size: 17px;
  line-height: 1.3;
}

.page-contact .fix-step__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--fog);
}

.page-contact .fix-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
}

/* 发信准备 */
.page-contact .section--prep {
  background: var(--paper);
  color: var(--ink-800);
}

.page-contact .section--prep .eyebrow {
  color: var(--slate);
}

.page-contact .prep-lead {
  color: var(--slate-soft);
}

.page-contact .checklist {
  list-style: none;
  margin: clamp(22px, 3vw, 30px) 0 0;
  padding: 0;
}

.page-contact .checklist__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 16px 0;
  border-top: 1px solid rgba(11, 23, 32, .16);
}

.page-contact .checklist__box {
  width: 20px;
  height: 20px;
  margin: 3px 0 0;
  accent-color: var(--orange);
  cursor: pointer;
}

.page-contact .checklist__label {
  display: grid;
  gap: 4px;
  cursor: pointer;
}

.page-contact .checklist__label strong {
  font-size: 16px;
  line-height: 1.35;
}

.page-contact .checklist__label span {
  font-size: 14px;
  line-height: 1.7;
  color: var(--slate-soft);
}

.page-contact .checklist__tip {
  margin: 20px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--slate);
}

/* 响应与后续 */
.page-contact .reply-grid {
  display: grid;
  gap: 16px;
  margin-top: clamp(22px, 3vw, 30px);
}

.page-contact .reply-card {
  padding: clamp(20px, 3vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--ink-700);
}

.page-contact .reply-card__k {
  display: inline-block;
  margin-bottom: 12px;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  background: rgba(143, 227, 208, .14);
  color: var(--mint);
  font-size: 12px;
  letter-spacing: .06em;
}

.page-contact .reply-card h3 {
  margin: 0 0 8px;
  font-size: 18px;
  line-height: 1.3;
}

.page-contact .reply-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--fog);
}

.page-contact .next-links {
  display: grid;
  gap: 10px;
  margin-top: clamp(26px, 4vw, 40px);
}

.page-contact .next-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  color: var(--paper);
  font-size: 14px;
  text-decoration: none;
  transition: border-color .18s var(--ease), background .18s var(--ease);
}

.page-contact .next-link::after {
  content: "→";
  color: var(--orange);
  flex: none;
}

.page-contact .next-link:hover {
  border-color: var(--orange);
  background: rgba(255, 107, 53, .08);
}

/* 底部信息带 */
.page-contact .info-band {
  padding-block: clamp(26px, 4vw, 42px);
  background: var(--ink-900);
  border-top: 2px solid var(--orange);
}

.page-contact .info-band__title {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .16em;
  color: var(--fog);
}

.page-contact .info-band__inner {
  display: grid;
  gap: 18px;
}

.page-contact .info-band__cell {
  display: grid;
  gap: 6px;
}

.page-contact .info-band__key {
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--fog);
}

.page-contact .info-band__val {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  word-break: break-word;
}

@media (min-width: 760px) {
  .page-contact .coop-panel {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  }

  .page-contact .checklist {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(28px, 4vw, 48px);
  }

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

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

  .page-contact .info-band__inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
  }
}

@media (min-width: 900px) {
  .page-contact .arrival-grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
  }

  .page-contact .fix-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, .72fr);
    align-items: start;
  }
}

@media (min-width: 1040px) {
  .page-contact .info-band__inner {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
  }

  .page-contact .info-band__cell {
    padding: 0 24px;
    border-left: 1px solid var(--line);
  }

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