.page-contact {
  --pc-shadow: 8px 8px 0 rgba(0, 0, 0, 0.35);
  padding-bottom: 96px;
}

/* ---------- 首屏封面 ---------- */
.page-contact .cover {
  padding-top: 26px;
}

.page-contact .cover__title {
  font-family: var(--font-display);
  font-size: clamp(32px, 7.8vw, 76px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 16px 0 0;
  max-width: 18ch;
}

.page-contact .cover__lede {
  margin-top: 20px;
  max-width: 64ch;
}

/* ---------- 分类索引条 ---------- */
.page-contact .index-strip {
  margin-top: 34px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .index-strip__link {
  display: block;
  padding: 16px 14px 18px;
  background: var(--ink-2);
  color: var(--text);
  text-decoration: none;
  transition: background 160ms var(--ease), transform 160ms var(--ease);
}

.page-contact .index-strip__link:hover,
.page-contact .index-strip__link:focus-visible {
  background: var(--ink-3);
  transform: translateY(-2px);
}

.page-contact .index-strip__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-contact .index-strip__label {
  display: block;
  margin-top: 10px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-contact .index-strip__hint {
  display: block;
  margin-top: 4px;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--muted-2);
}

/* ---------- 顶部横幅 ---------- */
.page-contact .banner {
  margin-top: clamp(32px, 6vw, 60px);
  border: 1px solid var(--line);
  background: var(--ink-2);
}

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

/* ---------- 区块骨架 ---------- */
.page-contact .block {
  padding-top: clamp(52px, 8vw, 96px);
}

.page-contact .block__head {
  max-width: 760px;
}

.page-contact .block__title {
  font-family: var(--font-display);
  font-size: clamp(26px, 4.6vw, 44px);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -0.015em;
  margin: 12px 0 0;
}

.page-contact .block__note {
  margin: 16px 0 0;
  max-width: 66ch;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.78;
}

.page-contact .block__note a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 四类咨询需求 ---------- */
.page-contact .need-figure {
  margin: clamp(28px, 5vw, 44px) auto 0;
  max-width: 880px;
  border: 1px solid var(--line);
  background: var(--ink-2);
}

.page-contact .need-grid {
  margin-top: clamp(26px, 4vw, 40px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-contact .need-card {
  --need-accent: var(--violet);
  --need-ink: var(--violet-soft);
  position: relative;
  padding: 28px 18px 22px;
  background: var(--ink-2);
  border: 1px solid var(--line);
  scroll-margin-top: 88px;
  transition: transform 180ms var(--ease), border-color 180ms var(--ease);
}

.page-contact .need-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--need-accent);
}

.page-contact .need-card:hover {
  transform: translateY(-3px);
  border-color: var(--need-accent);
}

.page-contact .need-card--violet {
  --need-accent: var(--violet);
  --need-ink: var(--violet-soft);
}

.page-contact .need-card--blue {
  --need-accent: var(--blue);
  --need-ink: var(--blue);
}

.page-contact .need-card--cyan {
  --need-accent: var(--cyan);
  --need-ink: var(--cyan);
}

.page-contact .need-card--amber {
  --need-accent: var(--amber);
  --need-ink: var(--amber);
}

.page-contact .need-card__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--need-ink);
}

.page-contact .need-card__title {
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin: 12px 0 10px;
}

.page-contact .need-card__text {
  margin: 0;
  color: var(--muted);
  font-size: 15.5px;
  line-height: 1.72;
}

.page-contact .need-card__prep {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--text);
}

.page-contact .need-card__prep strong {
  color: var(--need-ink);
  font-weight: 700;
}

/* ---------- 联系渠道 ---------- */
.page-contact .channel-board {
  margin-top: clamp(26px, 4vw, 40px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-contact .channel-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 26px 18px 22px;
  background: var(--ink-2);
  border: 1px solid var(--line);
  box-shadow: var(--pc-shadow);
  text-align: center;
}

.page-contact .channel-card__value {
  display: block;
  margin: 16px 0 10px;
  font-family: var(--font-mono);
  font-size: clamp(16px, 3.4vw, 24px);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0.01em;
  color: var(--text);
  text-decoration: none;
  overflow-wrap: anywhere;
  word-break: break-word;
}

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

.page-contact .channel-card--addr .channel-card__value {
  font-family: var(--font-body);
  font-size: clamp(18px, 3.2vw, 23px);
  letter-spacing: 0;
}

.page-contact .channel-card__desc {
  margin: 0;
  max-width: 36ch;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.74;
}

.page-contact .copy-btn {
  margin-top: 20px;
  min-width: 138px;
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-contact .copy-btn[data-copied] {
  color: var(--cyan);
  border-color: var(--cyan);
}

/* ---------- 准备清单 ---------- */
.page-contact .prep-list {
  list-style: none;
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-contact .prep-list__item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .prep-list__num {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--cyan);
  padding-top: 4px;
}

.page-contact .prep-list__title {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin: 0 0 8px;
}

.page-contact .prep-list__text {
  margin: 0;
  max-width: 64ch;
  color: var(--muted);
  font-size: 15.5px;
  line-height: 1.75;
}

/* ---------- 处理顺序 ---------- */
.page-contact .flow {
  list-style: none;
  margin: clamp(28px, 4vw, 42px) 0 0;
  padding: 0;
}

.page-contact .flow__step {
  position: relative;
  padding: 0 0 30px 26px;
  border-left: 1px solid var(--line);
}

.page-contact .flow__step:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-contact .flow__step::before {
  content: "";
  position: absolute;
  left: -4px;
  top: 7px;
  width: 7px;
  height: 7px;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(53, 242, 214, 0.16);
}

.page-contact .flow__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-contact .flow__title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin: 10px 0 8px;
}

.page-contact .flow__text {
  margin: 0;
  max-width: 62ch;
  color: var(--muted);
  font-size: 15.5px;
  line-height: 1.78;
}

.page-contact .flow__tail {
  margin: 34px 0 0;
  padding: 16px 18px;
  background: var(--ink-3);
  border-left: 2px solid var(--violet);
  max-width: 70ch;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.75;
}

.page-contact .flow__tail a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 合作方向 ---------- */
.page-contact .coop-grid {
  margin-top: clamp(26px, 4vw, 40px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-contact .coop-card {
  padding: 24px 20px;
  background: var(--ink-2);
  border: 1px solid var(--line);
}

.page-contact .coop-card__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(34px, 6vw, 48px);
  font-weight: 700;
  line-height: 1;
  color: var(--amber);
  letter-spacing: -0.02em;
}

.page-contact .coop-card__title {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin: 16px 0 10px;
}

.page-contact .coop-card__text {
  margin: 0;
  color: var(--muted);
  font-size: 15.5px;
  line-height: 1.75;
}

.page-contact .coop-note {
  margin: 22px 0 0;
  max-width: 70ch;
  color: var(--muted);
  font-size: 15.5px;
  line-height: 1.78;
}

/* ---------- 站点信息 ---------- */
.page-contact .site-strip {
  margin-top: clamp(24px, 4vw, 36px);
  padding: 24px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  align-items: center;
}

.page-contact .site-strip__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--muted-2);
}

.page-contact .site-strip__value {
  display: block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: clamp(17px, 2.8vw, 22px);
  color: var(--text);
  overflow-wrap: anywhere;
}

.page-contact .site-strip .copy-btn {
  margin-top: 0;
  justify-self: start;
}

.page-contact .site-note {
  margin-top: 24px;
}

.page-contact .tail-links {
  margin: 26px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
}

.page-contact .tail-links a {
  color: var(--muted);
  font-size: 15px;
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .index-strip {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-contact .prep-list__item {
    grid-template-columns: 60px minmax(0, 1fr);
    gap: 24px;
    padding: 22px 0;
  }

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

@media (min-width: 900px) {
  .page-contact .channel-board {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .channel-card--wide {
    grid-column: 1 / -1;
  }

  .page-contact .site-strip {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .page-contact .site-strip .copy-btn {
    justify-self: end;
  }
}

@media (min-width: 1180px) {
  .page-contact .need-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .cover__title {
    font-size: clamp(56px, 6vw, 88px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .index-strip__link,
  .page-contact .need-card,
  .page-contact .copy-btn,
  .page-contact .tail-links a {
    transition: none;
  }

  .page-contact .index-strip__link:hover,
  .page-contact .need-card:hover {
    transform: none;
  }
}