.page-contact {
  --sheet-rule: 1px solid var(--line);
  --sheet-side-w: 344px;
  background: var(--paper);
}

.page-contact .breadcrumbs {
  padding-top: clamp(18px, 3vw, 30px);
}

/* ===== 首屏 ===== */
.page-contact .contact-hero {
  position: relative;
  padding: clamp(30px, 5vw, 66px) 0 clamp(26px, 4vw, 50px);
  border-bottom: var(--sheet-rule);
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: min(200px, 30vw);
  height: 3px;
  background: var(--electric-teal);
}

.page-contact .contact-hero .eyebrow {
  margin: 0 0 18px;
}

.page-contact .hero-title {
  margin: 0 0 22px;
  max-width: 17ch;
  letter-spacing: -0.012em;
  color: var(--ink-blue);
}

.page-contact .contact-hero .lead {
  max-width: 62ch;
  margin: 0 0 20px;
  color: var(--gray-500);
}

.page-contact .hero-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin: 0;
}

/* ===== 工作单骨架 ===== */
.page-contact .work-sheet {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
  padding: clamp(30px, 4vw, 54px) 0 clamp(44px, 6vw, 84px);
}

.page-contact .sheet-main {
  min-width: 0;
}

.page-contact .sheet-side {
  min-width: 0;
}

.page-contact .contact-types,
.page-contact .contact-process,
.page-contact .contact-support {
  padding-bottom: clamp(34px, 5vw, 60px);
  margin-bottom: clamp(34px, 5vw, 60px);
  border-bottom: var(--sheet-rule);
}

.page-contact .contact-support {
  padding-bottom: 0;
  margin-bottom: 0;
  border-bottom: 0;
}

/* ===== 通用小节头部 ===== */
.page-contact .section-head {
  margin-bottom: clamp(22px, 3vw, 34px);
}

.page-contact .section-head .eyebrow {
  margin: 0 0 12px;
}

.page-contact .section-head h2 {
  margin: 0 0 12px;
  max-width: 22ch;
}

.page-contact .section-head .muted {
  max-width: 60ch;
  margin: 0;
}

/* ===== 咨询类型 ===== */
.page-contact .type-list {
  border-top: var(--sheet-rule);
}

.page-contact .type-card {
  padding: clamp(20px, 3vw, 30px) 0;
  border-bottom: var(--sheet-rule);
  scroll-margin-top: 150px;
  transition: background-color .25s ease;
}

.page-contact .type-card:target {
  background:
    linear-gradient(90deg, rgba(18, 210, 195, .1), rgba(18, 210, 195, 0) 62%);
}

.page-contact .type-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  margin-bottom: 12px;
}

.page-contact .type-no {
  font-size: 13px;
  color: var(--electric-teal);
  letter-spacing: .1em;
}

.page-contact .type-name {
  margin: 0;
  font-size: clamp(19px, 2.4vw, 24px);
  font-weight: 800;
  color: var(--ink-blue);
  letter-spacing: -.01em;
}

.page-contact .type-desc {
  max-width: 66ch;
  margin: 0 0 16px;
  color: var(--graphite);
  line-height: 1.75;
}

.page-contact .type-prep {
  border-left: 3px solid var(--anchor-blue);
  padding-left: 16px;
  margin-bottom: 14px;
}

.page-contact .type-prep .mono-label {
  display: block;
  margin: 0 0 10px;
}

.page-contact .check-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 7px;
}

.page-contact .check-list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.55;
  color: var(--graphite);
}

.page-contact .check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .58em;
  width: 9px;
  height: 9px;
  border: 1px solid var(--anchor-blue);
  background: transparent;
}

.page-contact .type-eta {
  margin: 0;
  font-size: 12.5px;
  color: var(--gray-500);
}

.page-contact .type-tail {
  margin: 24px 0 0;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--gray-500);
}

.page-contact .type-tail a {
  color: var(--anchor-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-contact .type-tail a:hover {
  color: var(--signal-orange);
}

/* ===== 受理流程 ===== */
.page-contact .step-rail {
  list-style: none;
  margin: 0 0 clamp(22px, 3vw, 32px);
  padding: 0;
  display: grid;
  gap: 0;
  border-top: var(--sheet-rule);
  counter-reset: step;
}

.page-contact .step {
  border-bottom: var(--sheet-rule);
}

.page-contact .step details {
  padding: 0;
}

.page-contact .step summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 0;
  transition: color .2s ease;
}

.page-contact .step summary::-webkit-details-marker {
  display: none;
}

.page-contact .step summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--mono);
  font-size: 16px;
  color: var(--gray-500);
  transition: transform .2s ease, color .2s ease;
}

.page-contact .step details[open] summary::after {
  content: "–";
  color: var(--signal-orange);
}

.page-contact .step summary:hover .step-name {
  color: var(--anchor-blue);
}

.page-contact .step-no {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--electric-teal);
  flex: 0 0 auto;
}

.page-contact .step-name {
  font-size: 16px;
  font-weight: 800;
  color: var(--ink-blue);
  letter-spacing: -.005em;
}

.page-contact .step details p {
  margin: 0 0 18px;
  max-width: 66ch;
  padding-left: 38px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--gray-500);
}

.page-contact .process-visual {
  margin: 0;
}

.page-contact .process-visual .media-caption {
  margin-top: 10px;
}

/* ===== 就近支持 ===== */
.page-contact .region-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  border-top: var(--sheet-rule);
}

.page-contact .region-card {
  padding: clamp(18px, 2.6vw, 26px) 0;
  border-bottom: var(--sheet-rule);
}

.page-contact .region-no {
  display: block;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--anchor-blue);
  margin-bottom: 8px;
}

.page-contact .region-card h3 {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 800;
  color: var(--ink-blue);
}

.page-contact .region-card p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--graphite);
}

.page-contact .region-card .mono-label {
  display: block;
  margin: 0;
  font-size: 11.5px;
}

.page-contact .region-tail {
  margin: 22px 0 0;
  max-width: 66ch;
  padding-left: 16px;
  border-left: 3px solid var(--electric-teal);
  font-size: 15px;
  line-height: 1.75;
  color: var(--gray-500);
}

/* ===== 右侧联系面板 ===== */
.page-contact .contact-panel {
  background: var(--ink-blue);
  color: var(--paper);
  border: 1px solid var(--line-strong);
  border-top: 3px solid var(--electric-teal);
  padding: clamp(20px, 3vw, 26px) clamp(18px, 3vw, 24px) clamp(22px, 3vw, 28px);
}

.page-contact .panel-eyebrow {
  display: block;
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--electric-teal);
}

.page-contact .contact-panel h2 {
  margin: 0 0 12px;
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 900;
  color: var(--white);
  letter-spacing: -.01em;
}

.page-contact .panel-note {
  margin: 0 0 20px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(231, 234, 238, .72);
}

.page-contact .contact-list {
  margin: 0 0 20px;
  padding: 0;
  border-top: var(--sheet-rule);
  border-color: var(--line-invert);
}

.page-contact .contact-row {
  padding: 14px 0;
  border-bottom: var(--sheet-rule);
  border-color: var(--line-invert);
}

.page-contact .contact-key {
  margin: 0 0 6px;
  font-size: 11px;
  color: rgba(231, 234, 238, .58);
}

.page-contact .contact-val {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.page-contact .contact-text {
  font-size: 14.5px;
  color: var(--white);
  word-break: break-all;
}

.page-contact .contact-text.mono {
  letter-spacing: .02em;
  color: var(--electric-teal);
}

.page-contact .copy-btn {
  border: 1px solid rgba(18, 210, 195, .55);
  background: transparent;
  color: var(--electric-teal);
  font-size: 12px;
  padding: 4px 10px;
  cursor: pointer;
  font-family: var(--sans);
  letter-spacing: .04em;
  transition: background-color .2s ease, color .2s ease, border-color .2s ease;
}

.page-contact .copy-btn:hover {
  background: var(--electric-teal);
  color: var(--ink-blue);
  border-color: var(--electric-teal);
}

.page-contact .copy-btn[data-state="ok"] {
  background: var(--lime-flash);
  border-color: var(--lime-flash);
  color: var(--ink-blue);
}

.page-contact .copy-btn[data-state="fail"] {
  background: var(--amber);
  border-color: var(--amber);
  color: var(--ink-blue);
}

.page-contact .panel-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: var(--sheet-rule);
  border-color: var(--line-invert);
  margin-bottom: 20px;
}

.page-contact .panel-stat {
  padding: 14px 10px 14px 0;
  border-bottom: var(--sheet-rule);
  border-color: var(--line-invert);
}

.page-contact .panel-stat:nth-child(odd) {
  border-right: var(--sheet-rule);
  border-color: var(--line-invert);
  padding-right: 12px;
}

.page-contact .panel-stat:nth-child(even) {
  padding-left: 14px;
}

.page-contact .panel-stat-value {
  display: block;
  font-size: 15px;
  color: var(--electric-teal);
  letter-spacing: .02em;
  margin-bottom: 6px;
}

.page-contact .panel-stat-label {
  display: block;
  font-size: 12px;
  line-height: 1.5;
  color: rgba(231, 234, 238, .6);
}

.page-contact .panel-visual {
  margin-bottom: 20px;
}

.page-contact .panel-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.page-contact .panel-links a {
  display: inline-block;
  padding: 7px 12px;
  border: 1px solid rgba(231, 234, 238, .24);
  font-size: 13px;
  color: var(--paper);
  text-decoration: none;
  transition: border-color .2s ease, color .2s ease, background-color .2s ease;
}

.page-contact .panel-links a:hover {
  border-color: var(--electric-teal);
  color: var(--electric-teal);
  background: rgba(18, 210, 195, .08);
}

.page-contact .panel-foot {
  display: block;
  margin: 14px 0 0;
  font-size: 11px;
  color: var(--gray-500);
  letter-spacing: .04em;
}

/* ===== 桌面布局 ===== */
@media (min-width: 900px) {
  .page-contact .region-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    column-gap: clamp(20px, 3vw, 38px);
  }

  .page-contact .step-rail {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    border-top: 0;
    column-gap: clamp(16px, 2.4vw, 30px);
  }

  .page-contact .step {
    border-bottom: 0;
    border-top: 2px solid var(--anchor-blue);
    padding-top: 4px;
  }

  .page-contact .step details p {
    padding-left: 0;
  }

  .page-contact .step summary {
    align-items: flex-start;
    flex-direction: column;
    gap: 6px;
    padding-top: 14px;
  }

  .page-contact .step summary::after {
    display: none;
  }
}

@media (min-width: 1080px) {
  .page-contact .work-sheet {
    grid-template-columns: minmax(0, 1fr) var(--sheet-side-w);
    gap: clamp(36px, 4vw, 58px);
    align-items: start;
  }

  .page-contact .sheet-side {
    position: sticky;
    top: calc(var(--frame-h) + var(--status-h) + 28px);
  }
}

@media (min-width: 1320px) {
  .page-contact .contact-hero .lead {
    max-width: 58ch;
  }
}

/* ===== reduced motion ===== */
@media (prefers-reduced-motion: reduce) {
  .page-contact .type-card,
  .page-contact .copy-btn,
  .page-contact .step summary,
  .page-contact .panel-links a {
    transition: none;
  }
}