.page-contact {
  background: var(--paper-50);
  color: var(--ink-900);
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumb {
  margin-top: 20px;
  font-family: var(--font-mono);
  font-size: var(--index);
  letter-spacing: 0.04em;
  color: var(--stone-500);
}

.page-contact .breadcrumb a {
  color: var(--stone-500);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-contact .breadcrumb a:hover {
  color: var(--ink-700);
  border-bottom-color: var(--copper-500);
}

/* ---------- 首屏框景 ---------- */
.page-contact .contact-hero {
  position: relative;
  margin-top: 16px;
  padding: 30px 20px 32px;
  background: var(--ink-900);
  color: var(--paper-50);
  overflow: hidden;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(180, 136, 75, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(180, 136, 75, 0.1) 1px, transparent 1px);
  background-size: 56px 56px;
  pointer-events: none;
}

.page-contact .contact-hero__body {
  position: relative;
  z-index: 1;
}

.page-contact .contact-hero__eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--index);
  letter-spacing: 0.12em;
  color: var(--copper-200);
}

.page-contact .contact-hero__title {
  margin: 16px 0 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.85rem, 7vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--paper-50);
}

.page-contact .contact-hero__lede {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: 1rem;
  line-height: var(--lh);
  color: rgba(247, 245, 241, 0.8);
}

.page-contact .contact-hero__meta {
  list-style: none;
  margin: 26px 0 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--line-invert);
  display: grid;
  gap: 14px;
  font-size: 0.86rem;
  line-height: 1.55;
  color: rgba(247, 245, 241, 0.88);
}

.page-contact .contact-hero__meta-key {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--copper-200);
}

@media (min-width: 720px) {
  .page-contact .contact-hero {
    padding: 44px 40px 48px;
  }

  .page-contact .contact-hero__meta {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
}

/* ---------- 区块通用 ---------- */
.page-contact .section__head {
  margin-bottom: 24px;
}

.page-contact .section__note {
  margin: 10px 0 0;
  max-width: 58ch;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--stone-500);
}

/* ---------- 双通道对照 ---------- */
.page-contact .channels-grid {
  display: grid;
  gap: 18px;
}

@media (min-width: 900px) {
  .page-contact .channels-grid {
    grid-template-columns: 7fr 5fr;
    gap: 26px;
    align-items: start;
  }
}

.page-contact .channel {
  position: relative;
  padding: 22px 20px 24px;
  background: var(--paper-100);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-1);
}

.page-contact .channel--mail {
  background: var(--paper-50);
  border-left: 2px solid var(--copper-500);
}

.page-contact .channel__tag {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: var(--index);
  letter-spacing: 0.08em;
  color: var(--stone-500);
}

.page-contact .channel h3 {
  margin: 0 0 10px;
  font-size: 1.12rem;
  font-weight: 500;
  line-height: 1.45;
  color: var(--ink-700);
}

.page-contact .channel__text {
  margin: 0;
  font-size: 0.95rem;
  line-height: var(--lh);
  color: var(--ink-900);
}

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

.page-contact .field-list__row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 9px 0;
  border-bottom: 1px solid var(--line-strong);
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--ink-900);
}

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

.page-contact .field-list__hint {
  flex: none;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  color: var(--stone-500);
  white-space: nowrap;
}

.page-contact .channel__foot {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line-copper);
  font-size: 0.84rem;
  line-height: 1.75;
  color: var(--stone-500);
}

.page-contact .channels-visual {
  margin-top: 26px;
}

@media (min-width: 900px) {
  .page-contact .channels-visual {
    margin-top: 32px;
  }
}

/* ---------- 分步说明 ---------- */
.page-contact .steps {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-contact .steps__item {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 14px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

@media (min-width: 720px) {
  .page-contact .steps__item {
    grid-template-columns: 96px 1fr;
    gap: 28px;
    padding: 30px 0;
  }
}

.page-contact .steps__num {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 400;
  line-height: 1;
  padding-top: 2px;
  color: var(--copper-500);
}

@media (min-width: 720px) {
  .page-contact .steps__num {
    font-size: 1.9rem;
  }
}

.page-contact .steps__body h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
  font-weight: 500;
  line-height: 1.45;
  color: var(--ink-700);
}

.page-contact .steps__body p {
  margin: 0;
  max-width: 68ch;
  font-size: 0.95rem;
  line-height: var(--lh);
  color: var(--ink-900);
}

/* ---------- 准备清单 ---------- */
.page-contact .checklist {
  margin-top: 24px;
}

.page-contact .checklist__meta {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--stone-500);
  white-space: nowrap;
}

/* ---------- 响应时效 ---------- */
.page-contact .response-grid {
  display: grid;
  gap: 24px;
}

@media (min-width: 900px) {
  .page-contact .response-grid {
    grid-template-columns: 5fr 7fr;
    gap: 32px;
    align-items: start;
  }
}

.page-contact .response-copy p {
  margin: 0 0 18px;
  max-width: 58ch;
  font-size: 0.95rem;
  line-height: var(--lh);
  color: var(--ink-900);
}

.page-contact .response-facts {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .response-facts li {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  font-size: 0.86rem;
  line-height: 1.65;
  color: var(--stone-500);
}

.page-contact .response-facts__num {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  color: var(--ink-700);
}

.page-contact .timeline {
  padding: 28px 18px 22px;
  background: var(--paper-100);
  border: 1px solid var(--line);
}

@media (min-width: 720px) {
  .page-contact .timeline {
    padding: 34px 28px 26px;
  }
}

.page-contact .timeline__bar {
  position: relative;
  height: 2px;
  margin: 0 0 30px;
  background: linear-gradient(90deg, var(--copper-200) 0%, var(--copper-500) 55%, var(--ink-500) 100%);
}

.page-contact .timeline__dot {
  position: absolute;
  top: 50%;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--paper-50);
  border: 2px solid var(--ink-700);
  transform: translate(-50%, -50%);
}

.page-contact .timeline__dot--start {
  left: 0;
}

.page-contact .timeline__dot--mid {
  left: 50%;
  border-color: var(--copper-500);
}

.page-contact .timeline__dot--end {
  left: 100%;
}

.page-contact .timeline__labels {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: space-between;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  line-height: 1.7;
  letter-spacing: 0.04em;
  color: var(--stone-500);
}

.page-contact .timeline__labels li {
  display: block;
}

.page-contact .timeline__labels li span {
  display: block;
  color: var(--ink-500);
}

.page-contact .timeline__labels li:nth-child(2) {
  text-align: center;
}

.page-contact .timeline__labels li:last-child {
  text-align: right;
}

.page-contact .timeline__note {
  margin: 22px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 0.85rem;
  line-height: 1.75;
  color: var(--stone-500);
}

.page-contact .response-visual {
  margin-top: 30px;
}

/* ---------- 合作方向标签页 ---------- */
.page-contact .tabs {
  margin-top: 8px;
}

.page-contact .tabs__bar {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 22px;
  border-bottom: 1px solid var(--line);
}

.page-contact .tabs__btn {
  appearance: none;
  font-family: var(--font-body);
  font-size: 0.88rem;
  line-height: 1.4;
  padding: 10px 16px;
  background: transparent;
  color: var(--stone-500);
  border: 1px solid transparent;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-contact .tabs__btn:hover {
  color: var(--ink-700);
}

.page-contact .tabs__btn[aria-selected="true"] {
  color: var(--ink-700);
  border-bottom-color: var(--copper-500);
}

.page-contact .coop-panel__lede {
  margin: 0 0 18px;
  max-width: 70ch;
  font-size: 0.95rem;
  line-height: var(--lh);
  color: var(--ink-900);
}

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

.page-contact .coop-panel__list li {
  display: grid;
  gap: 5px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--ink-900);
}

.page-contact .coop-panel__key {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--stone-500);
}

/* ---------- 联系方式 ---------- */
.page-contact .contact-direct {
  padding: 46px 0 52px;
  background: var(--ink-700);
  color: var(--paper-50);
}

.page-contact .contact-direct .h2 {
  color: var(--paper-50);
}

.page-contact .contact-direct .section__num {
  color: var(--copper-200);
}

.page-contact .contact-direct__grid {
  display: grid;
  gap: 1px;
  margin-top: 4px;
  background: var(--line-invert);
  border: 1px solid var(--line-invert);
}

@media (min-width: 900px) {
  .page-contact .contact-direct__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.page-contact .contact-item {
  padding: 22px 20px 24px;
  background: var(--ink-700);
}

.page-contact .contact-item__key {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--copper-200);
}

.page-contact .contact-item__val {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--paper-50);
  overflow-wrap: anywhere;
}

.page-contact .contact-item .copy-btn {
  margin-top: 14px;
  padding: 7px 12px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  background: transparent;
  color: var(--copper-200);
  border: 1px solid var(--line-copper);
  cursor: pointer;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-contact .contact-item .copy-btn:hover {
  color: var(--paper-50);
  border-color: var(--copper-200);
}

.page-contact .contact-item .copy-btn[data-copied="true"] {
  color: var(--paper-50);
  border-color: var(--paper-50);
}

.page-contact .contact-item__use {
  margin: 14px 0 0;
  font-size: 0.85rem;
  line-height: 1.75;
  color: rgba(247, 245, 241, 0.78);
}

/* ---------- 服务网络 ---------- */
.page-contact .coverage__lede {
  margin: 0 0 20px;
  max-width: 64ch;
  font-size: 0.95rem;
  line-height: var(--lh);
  color: var(--ink-900);
}

.page-contact .coverage__list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  margin: 0 0 20px;
  padding: 0;
  background: var(--line);
  border: 1px solid var(--line);
}

@media (min-width: 640px) {
  .page-contact .coverage__list {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1000px) {
  .page-contact .coverage__list {
    grid-template-columns: repeat(5, 1fr);
  }
}

.page-contact .coverage__list li {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 12px;
  background: var(--paper-50);
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--ink-700);
}

.page-contact .coverage__list li::before {
  content: "";
  flex: none;
  width: 5px;
  height: 5px;
  background: var(--copper-500);
}

.page-contact .coverage__note {
  margin: 0;
  max-width: 66ch;
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--stone-500);
}

/* ---------- 延伸入口 ---------- */
.page-contact .contact-links {
  border-top: 1px solid var(--line);
}

.page-contact .contact-links__list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  margin: 16px 0 0;
  padding: 0;
}

.page-contact .contact-links__list a {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--ink-500);
  text-decoration: none;
  border-bottom: 1px solid var(--line-copper);
  padding-bottom: 2px;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-contact .contact-links__list a:hover {
  color: var(--ink-700);
  border-bottom-color: var(--copper-500);
}

/* ---------- 窄屏兜底 ---------- */
@media (max-width: 420px) {
  .page-contact .contact-hero {
    padding: 24px 16px 26px;
  }

  .page-contact .channel {
    padding: 18px 16px 20px;
  }

  .page-contact .contact-item {
    padding: 20px 16px 22px;
  }

  .page-contact .timeline {
    padding: 22px 14px 20px;
  }

  .page-contact .field-list__row {
    flex-wrap: wrap;
    gap: 4px;
  }
}