.page-contact {
  --pc-gap: 24px;
  display: block;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding-top: clamp(36px, 6vw, 72px);
  padding-bottom: clamp(28px, 4vw, 48px);
}

.page-contact .hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 4vw, 44px);
  margin-top: clamp(24px, 4vw, 40px);
}

.page-contact .hero-index {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-left: 14px;
  border-left: 1px solid var(--line);
}

.page-contact .hero-code {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  letter-spacing: .06em;
  color: var(--gold);
}

.page-contact .hero-note {
  margin: 0;
  font-size: var(--fs-note);
  line-height: 1.85;
  color: var(--slate);
  max-width: 30ch;
}

.page-contact .hero-title {
  margin: 0 0 18px;
  font-size: var(--fs-h1);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -.025em;
  color: var(--paper);
}

.page-contact .hero-lede {
  margin: 0;
  max-width: 52ch;
  font-size: clamp(1rem, 1.4vw, 1.1rem);
  line-height: 1.92;
  color: var(--paper-dim);
}

.page-contact .hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 0;
}

@media (min-width: 900px) {
  .page-contact .hero-grid {
    grid-template-columns: minmax(190px, .3fr) minmax(0, 1fr);
    align-items: end;
  }
  .page-contact .hero-index {
    padding-bottom: 8px;
  }
}

/* ---------- 章节头 ---------- */
.page-contact .section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px 24px;
  margin-bottom: clamp(18px, 2.4vw, 28px);
}

.page-contact .section-sub {
  margin: 0;
  max-width: 46ch;
  font-size: var(--fs-note);
  line-height: 1.85;
  color: var(--slate);
}

/* ---------- 适用场景 ---------- */
.page-contact .scenario-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  overflow: hidden;
}

.page-contact .scenario-card {
  background: var(--ink-night);
  padding: 24px 22px 26px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-contact .scenario-no {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .08em;
  color: var(--gold);
}

.page-contact .scenario-title {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--paper);
  letter-spacing: .01em;
}

.page-contact .scenario-text {
  margin: 0;
  font-size: .94rem;
  line-height: 1.88;
  color: var(--slate);
}

.page-contact .scenario-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: auto 0 0;
  padding-top: 6px;
}

@media (min-width: 800px) {
  .page-contact .scenario-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 主栅格：左内容 + 右联系卡 ---------- */
.page-contact .contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(32px, 5vw, 56px);
  align-items: start;
}

.page-contact .contact-main {
  display: grid;
  gap: clamp(40px, 6vw, 72px);
  min-width: 0;
}

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

/* ---------- 分档对比 ---------- */
.page-contact .contact-plate {
  margin: 0 0 clamp(20px, 3vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  overflow: hidden;
  background: var(--ink-deep);
}

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

.page-contact .tier-jump {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
  margin-bottom: clamp(18px, 2.6vw, 26px);
  scrollbar-width: none;
  -ms-overflow-style: none;
}

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

.page-contact .tier-jump__item {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: rgba(243, 239, 230, .03);
  color: var(--paper-dim);
  font-size: .86rem;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color .24s var(--ease), color .24s var(--ease), background .24s var(--ease);
}

.page-contact .tier-jump__item:hover,
.page-contact .tier-jump__item:focus-visible {
  border-color: rgba(227, 169, 60, .5);
  background: var(--gold-soft);
  color: var(--paper);
}

.page-contact .tier-jump__no {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .06em;
  color: var(--gold);
}

.page-contact .tier-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-contact .tier-card {
  --tier-color: var(--gold);
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 22px 20px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: linear-gradient(180deg, rgba(243, 239, 230, .035), transparent 48%);
  scroll-margin-top: 118px;
  transition: border-color .28s var(--ease), box-shadow .28s var(--ease), transform .28s var(--ease);
}

.page-contact .tier-card::before {
  content: "";
  display: block;
  width: 46px;
  height: 3px;
  border-radius: var(--radius-pill);
  background: var(--tier-color);
}

.page-contact .tier-card--core { --tier-color: var(--gold); }
.page-contact .tier-card--standard { --tier-color: var(--celadon); }
.page-contact .tier-card--observe { --tier-color: var(--cinnabar); }

.page-contact .tier-card:target {
  border-color: rgba(227, 169, 60, .55);
  box-shadow: 0 0 0 1px rgba(227, 169, 60, .22), 0 30px 60px -40px rgba(0, 0, 0, .95);
}

.page-contact .tier-card__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 10px;
}

.page-contact .tier-card__no {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .08em;
  color: var(--tier-color);
}

.page-contact .tier-card__name {
  margin: 0;
  font-size: 1.04rem;
  font-weight: 700;
  color: var(--paper);
}

.page-contact .tier-card__cities {
  margin: 0 0 0 auto;
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .05em;
  color: var(--slate);
}

.page-contact .tier-list {
  margin: 0;
  display: grid;
}

.page-contact .tier-row {
  padding: 11px 0;
  border-top: 1px solid var(--line);
}

.page-contact .tier-row dt {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .07em;
  color: var(--slate);
  margin-bottom: 4px;
}

.page-contact .tier-row dd {
  margin: 0;
  font-size: .92rem;
  line-height: 1.78;
  color: var(--paper-dim);
}

@media (min-width: 1180px) {
  .page-contact .contact-layout {
    grid-template-columns: minmax(0, 1fr) 336px;
    gap: 36px;
  }
  .page-contact .tier-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 核验流程 ---------- */
.page-contact .phase-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
}

.page-contact .phase-item {
  position: relative;
  padding: 0 0 30px 62px;
  min-height: 46px;
}

.page-contact .phase-item:last-child {
  padding-bottom: 0;
}

.page-contact .phase-item::before {
  content: "";
  position: absolute;
  left: 21px;
  top: 50px;
  bottom: 4px;
  width: 1px;
  background: linear-gradient(180deg, var(--line), rgba(58, 68, 89, 0));
}

.page-contact .phase-item:last-child::before {
  display: none;
}

.page-contact .phase-num {
  position: absolute;
  left: 0;
  top: 0;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--ink-night);
  font-family: var(--font-mono);
  font-size: .84rem;
  letter-spacing: .04em;
  color: var(--gold);
}

.page-contact .phase-title {
  margin: 8px 0 8px;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--paper);
}

.page-contact .phase-text {
  margin: 0;
  max-width: 62ch;
  font-size: .94rem;
  line-height: 1.9;
  color: var(--slate);
}

/* ---------- 退回原因 ---------- */
.page-contact .reject-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  overflow: hidden;
}

.page-contact .reject-item {
  background: var(--ink-night);
  padding: 18px 20px 20px;
}

.page-contact .reject-item h3 {
  margin: 0 0 8px;
  font-size: .97rem;
  font-weight: 700;
  color: var(--paper);
}

.page-contact .reject-item p {
  margin: 0;
  font-size: .89rem;
  line-height: 1.82;
  color: var(--slate);
}

@media (min-width: 760px) {
  .page-contact .reject-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ---------- 联系卡片 ---------- */
.page-contact .contact-aside {
  min-width: 0;
}

.page-contact .contact-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: var(--ink-deep);
  overflow: hidden;
  box-shadow: 0 30px 70px -42px rgba(0, 0, 0, .95);
}

.page-contact .contact-visual {
  margin: 0;
  border-bottom: 1px solid var(--line);
  background: var(--ink-night);
}

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

.page-contact .contact-card__body {
  padding: 22px 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-contact .contact-card__title {
  margin: 0;
  font-size: 1.12rem;
  font-weight: 800;
  letter-spacing: .01em;
  color: var(--paper);
}

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

.page-contact .contact-row {
  padding: 12px 0;
  border-top: 1px solid var(--line);
}

.page-contact .contact-key {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .07em;
  color: var(--slate);
}

.page-contact .contact-value {
  display: block;
  font-size: .95rem;
  line-height: 1.65;
  color: var(--paper);
  word-break: break-word;
}

.page-contact .contact-value--mono {
  font-family: var(--font-mono);
  letter-spacing: .03em;
  font-size: .88rem;
}

.page-contact .contact-hint {
  margin: 0;
  padding: 12px 14px;
  border-left: 2px solid var(--gold);
  background: var(--gold-soft);
  font-size: .84rem;
  line-height: 1.85;
  color: var(--paper-dim);
}

.page-contact .contact-cta {
  align-self: flex-start;
}

@media (min-width: 1180px) {
  .page-contact .contact-aside {
    position: sticky;
    top: 104px;
  }
}

/* ---------- 延伸阅读 ---------- */
.page-contact .more-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  overflow: hidden;
}

.page-contact .more-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px 20px 20px;
  background: var(--ink-night);
  text-decoration: none;
  transition: background .26s var(--ease);
}

.page-contact .more-item:hover,
.page-contact .more-item:focus-visible {
  background: #121D3A;
}

.page-contact .more-no {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  color: var(--gold);
}

.page-contact .more-title {
  font-size: .95rem;
  line-height: 1.72;
  color: var(--paper-dim);
  transition: color .26s var(--ease);
}

.page-contact .more-item:hover .more-title,
.page-contact .more-item:focus-visible .more-title {
  color: var(--paper);
}

@media (min-width: 680px) {
  .page-contact .more-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1040px) {
  .page-contact .more-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 窄屏收束 ---------- */
@media (max-width: 640px) {
  .page-contact .scenario-card,
  .page-contact .tier-card,
  .page-contact .contact-card__body,
  .page-contact .reject-item {
    padding-left: 18px;
    padding-right: 18px;
  }

  .page-contact .phase-item {
    padding-left: 54px;
  }

  .page-contact .phase-num {
    width: 38px;
    height: 38px;
    font-size: .78rem;
  }

  .page-contact .phase-item::before {
    left: 18px;
    top: 44px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .tier-card,
  .page-contact .tier-jump__item,
  .page-contact .more-item,
  .page-contact .more-title {
    transition: none;
  }
}