.page-contact {
  background: var(--paper);
  color: var(--carbon);
  padding-bottom: clamp(48px, 7vw, 96px);
}

.page-contact .breadcrumb {
  margin: 20px 0 22px;
}

/* ---------- 首屏：左文案 右钟面 ---------- */
.page-contact .pc-hero {
  display: grid;
  gap: clamp(20px, 4vw, 42px);
  padding: clamp(24px, 4.6vw, 48px);
  margin-bottom: clamp(28px, 5vw, 56px);
  align-items: center;
}

.page-contact .pc-hero .eyebrow {
  color: var(--brass);
}

.page-contact .pc-hero-copy h1 {
  font-size: clamp(27px, 5.2vw, 52px);
  line-height: 1.1;
  letter-spacing: -0.015em;
  margin: 12px 0 18px;
  color: var(--cream);
}

.page-contact .pc-lede {
  margin: 0;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  max-width: 40em;
  color: rgba(248, 244, 234, 0.84);
}

.page-contact .pc-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 22px 0 20px;
}

.page-contact .pc-actions .btn {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.page-contact .pc-quick {
  list-style: none;
  margin: 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--line-brass);
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--silver);
}

.page-contact .pc-quick li {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-contact .pc-quick span {
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--brass);
}

.page-contact .pc-hero-figure {
  margin: 0;
  padding: 10px;
  border: 1px solid var(--line-brass);
  background: var(--ink-green-deep);
}

.page-contact .pc-hero-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.page-contact .pc-hero-figure .media-caption {
  display: block;
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.03em;
  color: var(--silver);
}

/* ---------- 左右分置主体 ---------- */
.page-contact .pc-split {
  display: grid;
  gap: clamp(20px, 3.4vw, 34px);
  align-items: start;
}

.page-contact .pc-index {
  padding: clamp(20px, 3vw, 28px);
  min-width: 0;
}

.page-contact .pc-index-title {
  margin: 0 0 18px;
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--brass);
  font-weight: 700;
}

.page-contact .pc-index-list {
  margin: 0;
  display: grid;
  gap: 14px;
}

.page-contact .pc-index-row {
  display: grid;
  gap: 5px;
  padding-bottom: 13px;
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .pc-index-row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-contact .pc-index-row dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.13em;
  color: var(--brass);
}

.page-contact .pc-index-row dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--cream);
  word-break: break-word;
  overflow-wrap: anywhere;
}

.page-contact .pc-index-row dd a {
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px solid rgba(232, 154, 60, 0.42);
  overflow-wrap: anywhere;
}

.page-contact .pc-index-row dd a:hover,
.page-contact .pc-index-row dd a:focus-visible {
  border-bottom-color: var(--amber);
}

.page-contact .pc-index-note {
  margin: 18px 0 0;
  padding-top: 15px;
  border-top: 1px dashed var(--line-brass);
  font-size: 13px;
  line-height: 1.78;
  color: var(--silver);
}

.page-contact .pc-main {
  display: grid;
  gap: clamp(18px, 2.6vw, 26px);
  min-width: 0;
}

/* ---------- 内容块 ---------- */
.page-contact .pc-block {
  padding: clamp(22px, 3.2vw, 36px);
  background: var(--paper-light);
  border: 1px solid var(--line-soft);
  min-width: 0;
}

.page-contact .pc-block-head h2 {
  margin: 8px 0 16px;
  font-size: clamp(20px, 2.6vw, 28px);
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--ink-green);
}

.page-contact .pc-block-body p,
.page-contact .pc-steps-lede {
  margin: 0 0 14px;
  font-size: 15.5px;
  line-height: 1.85;
  color: #2a2a27;
  max-width: 42em;
}

.page-contact .pc-scope-figure {
  margin: 20px 0;
  padding: 8px;
  border: 1px solid var(--line-soft);
  background: var(--paper);
}

.page-contact .pc-scope-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 7 / 4;
  object-fit: cover;
}

.page-contact .pc-scope-figure .media-caption {
  display: block;
  margin-top: 9px;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--brass-dark);
}

.page-contact .pc-hint {
  margin-top: 20px;
  padding: 16px 18px;
  display: grid;
  gap: 9px;
  background: rgba(179, 74, 46, 0.07);
  border-left: 3px solid var(--rust);
}

.page-contact .pc-hint p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: #2a2a27;
  max-width: 42em;
}

/* 邮件清单 */
.page-contact .pc-checklist {
  list-style: none;
  margin: 20px 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .pc-checklist li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding-bottom: 13px;
  border-bottom: 1px solid var(--line-soft);
  font-size: 15px;
  line-height: 1.8;
  color: #2a2a27;
}

.page-contact .pc-checklist li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-contact .pc-check-idx {
  padding-top: 3px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--brass-dark);
}

.page-contact .pc-mail-sample {
  margin: 20px 0 0;
  padding: 13px 16px;
  background: var(--teal-slate);
  color: var(--cream);
  border-left: 3px solid var(--amber);
  font-size: 13px;
  line-height: 1.7;
  letter-spacing: 0.03em;
  overflow-wrap: anywhere;
}

/* 步骤展开 */
.page-contact .pc-steps {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.page-contact .pc-step {
  border: 1px solid var(--line-soft);
  background: var(--paper);
}

.page-contact .pc-step summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink-green);
}

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

.page-contact .pc-step summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 19px;
  line-height: 1;
  color: var(--brass-dark);
}

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

.page-contact .pc-step[open] {
  border-color: var(--amber);
  box-shadow: inset 3px 0 0 var(--amber);
}

.page-contact .pc-step summary:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: -2px;
}

.page-contact .pc-step p {
  margin: 0;
  padding: 0 18px 18px;
  font-size: 14.5px;
  line-height: 1.82;
  color: #2a2a27;
  max-width: 42em;
}

.page-contact .pc-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

/* 登记信息 */
.page-contact .pc-block--reg {
  background: var(--teal-slate);
  color: var(--cream);
  border-color: var(--line-brass);
}

.page-contact .pc-block--reg .pc-block-head h2 {
  color: var(--cream);
}

.page-contact .pc-block--reg .eyebrow {
  color: var(--brass);
}

.page-contact .pc-reg-list {
  margin: 0 0 18px;
  display: grid;
  gap: 14px;
}

.page-contact .pc-reg-list > div {
  display: grid;
  gap: 6px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-brass);
}

.page-contact .pc-reg-list dt {
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--brass);
}

.page-contact .pc-reg-list dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--cream);
  overflow-wrap: anywhere;
}

.page-contact .pc-reg-note {
  margin: 0 0 12px;
  font-size: 13.5px;
  line-height: 1.82;
  color: var(--silver);
  max-width: 42em;
}

.page-contact .pc-reg-note:last-child {
  margin-bottom: 0;
}

.page-contact .pc-reg-note a {
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px solid rgba(232, 154, 60, 0.42);
}

.page-contact .pc-reg-note a:hover,
.page-contact .pc-reg-note a:focus-visible {
  border-bottom-color: var(--amber);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-contact .pc-reg-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .pc-hero {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.9fr);
  }
}

@media (min-width: 980px) {
  .page-contact .pc-split {
    grid-template-columns: minmax(238px, 296px) minmax(0, 1fr);
  }

  .page-contact .pc-index {
    position: sticky;
    top: 96px;
  }
}

@media (max-width: 979px) {
  .page-contact .pc-index {
    position: static;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .pc-step summary::after {
    transition: none;
  }
}
<<<END>>>