.page-contact {
  padding-bottom: clamp(48px, 8vw, 96px);
}

/* —— 面包屑与首屏 —— */
.page-contact .breadcrumb {
  padding-top: clamp(16px, 3vw, 28px);
  margin-bottom: 6px;
}

.page-contact .contact-hero {
  max-width: 62ch;
  padding: clamp(20px, 4vw, 40px) 0 clamp(8px, 2vw, 16px);
}

.page-contact .contact-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.02em;
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1.18;
  color: var(--ink-900);
  margin: 0.35em 0 0.5em;
}

.page-contact .contact-hero .lede {
  max-width: 56ch;
  font-size: var(--fs-18);
  line-height: 1.75;
}

/* —— 主体两栏 —— */
.page-contact .contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 5vw, 56px);
  margin-top: clamp(24px, 5vw, 56px);
}

/* —— 左栏联系卡片 —— */
.page-contact .contact-panel {
  background: var(--paper-50);
  border: 1px solid var(--hairline-copper);
  border-radius: var(--radius-l);
  box-shadow: var(--shadow-m);
  overflow: hidden;
}

.page-contact .contact-panel .media-frame {
  margin: 0;
  border-bottom: 1px solid var(--hairline-copper);
  background: var(--ink-900);
}

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

.page-contact .contact-panel__inner {
  padding: clamp(20px, 3.2vw, 32px);
}

.page-contact .contact-panel__inner h2 {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.01em;
  font-size: var(--fs-24);
  line-height: 1.3;
  color: var(--ink-900);
  margin: 0.3em 0 0.9em;
}

.page-contact .contact-list {
  margin: 0 0 clamp(20px, 3vw, 28px);
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-contact .contact-list__row {
  display: grid;
  gap: 7px;
  padding-top: 15px;
  border-top: 1px solid var(--hairline);
}

.page-contact .contact-list__row:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-contact .contact-list__row dt {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--copper-600);
}

.page-contact .contact-list__row dd {
  margin: 0;
}

.page-contact .contact-plain {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-16);
  font-weight: 500;
  letter-spacing: 0.01em;
  line-height: 1.6;
  color: var(--ink-900);
  overflow-wrap: anywhere;
}

.page-contact .contact-hint {
  display: block;
  margin-top: 7px;
  font-size: var(--fs-14);
  line-height: 1.65;
  color: var(--slate-400);
}

.page-contact .contact-panel .btn {
  width: 100%;
  justify-content: center;
}

/* —— 右栏纵向内容流 —— */
.page-contact .contact-flow {
  display: grid;
  gap: clamp(40px, 6vw, 76px);
}

.page-contact .contact-flow > section {
  scroll-margin-top: 120px;
}

.page-contact .contact-flow .section__head {
  max-width: 56ch;
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-contact .contact-flow .section-title {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.02em;
  font-size: clamp(1.5rem, 3.4vw, 2.1rem);
  line-height: 1.26;
  color: var(--ink-900);
  margin: 0.3em 0 0.5em;
}

.page-contact .contact-flow .lede {
  font-size: var(--fs-16);
  line-height: 1.75;
}

/* —— 准备清单 —— */
.page-contact .check-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .check-item {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 16px;
  padding: clamp(16px, 2.6vw, 22px);
  background: var(--paper-50);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-s);
  transition: transform 260ms var(--ease), box-shadow 260ms var(--ease), border-color 260ms var(--ease);
}

.page-contact .check-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-m);
  border-color: var(--hairline-copper);
}

.page-contact .check-item__num {
  font-family: var(--font-mono);
  font-size: var(--fs-18);
  font-weight: 500;
  letter-spacing: 0.06em;
  line-height: 1.5;
  color: var(--copper-600);
}

.page-contact .check-item__title {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.01em;
  font-size: var(--fs-18);
  line-height: 1.4;
  color: var(--ink-900);
  margin: 0 0 7px;
}

.page-contact .check-item p {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--graphite-700);
}

/* —— 响应节奏 —— */
.page-contact .media-frame--wide {
  margin: 0;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-m);
  overflow: hidden;
  background: var(--indigo-100);
}

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

.page-contact .timeline {
  margin-top: clamp(20px, 3vw, 32px);
  display: grid;
  gap: 4px;
}

.page-contact .timeline__node {
  padding: 20px 0;
  border-top: 1px solid var(--hairline);
}

.page-contact .timeline__node:last-child {
  border-bottom: 1px solid var(--hairline);
}

.page-contact .timeline__dot {
  display: block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--copper-400);
  box-shadow: 0 0 0 5px rgba(169, 118, 44, 0.14);
  margin-bottom: 14px;
}

.page-contact .timeline__time {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: var(--fs-16);
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--copper-600);
}

.page-contact .timeline__desc {
  margin: 0;
  max-width: 46ch;
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--graphite-700);
}

/* —— 推进流程 —— */
.page-contact .step-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .step-item {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: clamp(18px, 3vw, 24px) 0;
  border-top: 1px solid var(--hairline);
}

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

.page-contact .step-item__num {
  font-family: var(--font-mono);
  font-size: var(--fs-24);
  font-weight: 500;
  letter-spacing: 0.06em;
  line-height: 1.25;
  color: var(--indigo-500);
}

.page-contact .step-item__title {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.01em;
  font-size: var(--fs-18);
  line-height: 1.4;
  color: var(--ink-900);
  margin: 0 0 7px;
}

.page-contact .step-item p {
  margin: 0;
  max-width: 62ch;
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--graphite-700);
}

/* —— 常见需求 —— */
.page-contact .topic-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: clamp(18px, 3vw, 28px);
}

.page-contact .topic-tab {
  display: inline-flex;
  align-items: center;
  padding: 9px 18px;
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius-pill);
  background: transparent;
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--indigo-500);
  text-decoration: none;
  transition: color 220ms var(--ease), border-color 220ms var(--ease), background-color 220ms var(--ease);
}

.page-contact .topic-tab:hover,
.page-contact .topic-tab:focus-visible {
  color: var(--copper-600);
  border-color: var(--copper-400);
  background: rgba(201, 162, 39, 0.1);
}

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

.page-contact .topic-card {
  padding: clamp(18px, 2.8vw, 26px);
  background: var(--paper-50);
  border: 1px solid var(--hairline);
  border-left: 3px solid var(--copper-600);
  border-radius: 0 var(--radius-m) var(--radius-m) 0;
  scroll-margin-top: 120px;
  transition: transform 240ms var(--ease), box-shadow 240ms var(--ease);
}

.page-contact .topic-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-m);
}

.page-contact .topic-card__title {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.01em;
  font-size: var(--fs-18);
  line-height: 1.4;
  color: var(--ink-900);
  margin: 0 0 9px;
}

.page-contact .topic-card p {
  margin: 0 0 14px;
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--graphite-700);
}

.page-contact .topic-card__link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--indigo-500);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
}

.page-contact .topic-card__link:hover,
.page-contact .topic-card__link:focus-visible {
  color: var(--copper-600);
  border-bottom-color: var(--copper-400);
}

/* —— 收束细线 —— */
.page-contact .closing-rule {
  height: 1px;
  border: 0;
  margin: clamp(40px, 6vw, 80px) 0 0;
  background: linear-gradient(90deg, transparent, var(--copper-600) 16%, var(--copper-400) 58%, transparent);
}

/* —— 响应式 —— */
@media (min-width: 640px) {
  .page-contact .check-item {
    grid-template-columns: 46px minmax(0, 1fr);
    gap: 20px;
  }

  .page-contact .step-item {
    grid-template-columns: 64px minmax(0, 1fr);
    gap: 22px;
  }
}

@media (min-width: 768px) {
  .page-contact .timeline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0;
  }

  .page-contact .timeline__node {
    padding: 22px 0 24px;
    border-top: 1px solid var(--hairline-copper);
    border-bottom: 0;
  }

  .page-contact .timeline__node:first-child {
    padding-right: clamp(20px, 3vw, 40px);
    border-right: 1px solid var(--hairline);
  }

  .page-contact .timeline__node:last-child {
    padding-left: clamp(20px, 3vw, 40px);
    border-bottom: 0;
    border-top: 1px solid var(--hairline-copper);
  }

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

@media (min-width: 1024px) {
  .page-contact .contact-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
    gap: clamp(36px, 4vw, 64px);
  }

  .page-contact .contact-panel {
    position: sticky;
    top: 100px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .check-item,
  .page-contact .topic-card,
  .page-contact .topic-tab,
  .page-contact .topic-card__link {
    transition-duration: 0.12s;
  }

  .page-contact .check-item:hover,
  .page-contact .topic-card:hover {
    transform: none;
  }
}