.page-contact {
  --pc-gap: clamp(18px, 3.2vw, 32px);
  --pc-pad: clamp(20px, 2.8vw, 32px);
  padding-bottom: clamp(56px, 9vw, 110px);
}

/* ---------- 面包屑 ---------- */
.page-contact .contact-crumbs {
  padding-top: clamp(20px, 4vw, 38px);
}

.page-contact .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
}

.page-contact .breadcrumbs li + li::before {
  content: "/";
  margin-right: 10px;
  color: var(--line);
}

.page-contact .breadcrumbs a {
  color: var(--steel);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

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

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding-top: clamp(28px, 5.5vw, 58px);
  overflow: hidden;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  right: -18%;
  top: 6%;
  width: min(560px, 62vw);
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan) 58%, var(--orange));
  transform: rotate(-13deg);
  opacity: 0.5;
  pointer-events: none;
}

.page-contact .contact-hero .wrap {
  position: relative;
  z-index: 1;
}

.page-contact .contact-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(34px, 7.6vw, 64px);
  line-height: 1.03;
  letter-spacing: -0.025em;
  color: var(--mist);
  margin: 14px 0 20px;
  max-width: 15ch;
}

.page-contact .contact-hero .lead {
  color: var(--ink-dim);
  font-size: clamp(15px, 2.3vw, 17.5px);
  line-height: 1.75;
  max-width: 40em;
  margin: 0 0 16px;
}

.page-contact .hero-hint {
  margin: 0;
  font-size: 13.5px;
  letter-spacing: 0.02em;
  color: var(--ink-faint);
}

.page-contact .hero-hint a {
  color: var(--mint);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: border-color 180ms var(--ease), color 180ms var(--ease);
}

.page-contact .hero-hint a:hover,
.page-contact .hero-hint a:focus-visible {
  border-bottom-color: var(--mint);
}

/* ---------- 通用标题 ---------- */
.page-contact .section-heading {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(23px, 3.6vw, 34px);
  line-height: 1.15;
  letter-spacing: -0.012em;
  color: var(--mist);
  margin: 0 0 clamp(20px, 3.4vw, 32px);
}

/* ---------- 三条联系渠道 ---------- */
.page-contact .channel-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--pc-gap);
}

.page-contact .channel-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: var(--pc-pad);
  background: linear-gradient(160deg, var(--hull), var(--deep) 78%);
  border: 1px solid var(--line);
  border-top-width: 3px;
  clip-path: var(--cut-md);
  transition: transform 240ms var(--ease), background 240ms var(--ease),
    box-shadow 240ms var(--ease);
}

.page-contact .channel-card--mail { border-top-color: var(--cyan); }
.page-contact .channel-card--phone { border-top-color: var(--orange); }
.page-contact .channel-card--addr { border-top-color: var(--mint); }

.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within {
  transform: translateY(-4px);
  background: linear-gradient(160deg, #10304d, var(--deep) 78%);
  box-shadow: inset 0 0 0 1px rgba(47, 243, 208, 0.35);
}

.page-contact .channel-index {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--ink-faint);
}

.page-contact .channel-name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  letter-spacing: 0.01em;
  color: var(--mist);
}

.page-contact .channel-scene {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--ink-dim);
}

.page-contact .channel-value {
  margin: auto 0 0;
  padding-top: 14px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(13px, 2.6vw, 16px);
  line-height: 1.55;
  letter-spacing: 0.01em;
  color: var(--mist);
  word-break: break-word;
  overflow-wrap: anywhere;
  user-select: all;
  cursor: text;
}

.page-contact .channel-card--mail .channel-value { color: var(--cyan); }
.page-contact .channel-card--phone .channel-value { color: var(--orange); }

.page-contact .channel-note {
  margin: 0;
  padding-top: 10px;
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--ink-faint);
  border-top: 1px solid var(--line);
}

/* ---------- 地址示意 ---------- */
.page-contact .address-figure {
  position: relative;
  margin: clamp(24px, 4vw, 42px) 0 0;
  overflow: hidden;
  clip-path: var(--cut-md);
}

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

/* ---------- 提问方式 ---------- */
.page-contact .ask-section {
  padding-top: clamp(42px, 7vw, 86px);
}

.page-contact .ask-head .lead {
  margin: 0 0 clamp(24px, 3.6vw, 36px);
  max-width: 44em;
  font-size: clamp(14.5px, 2.2vw, 16.5px);
  line-height: 1.78;
  color: var(--steel);
}

.page-contact .ask-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 4vw, 44px);
  align-items: start;
}

.page-contact .ask-builder {
  position: relative;
  padding: clamp(20px, 3vw, 30px);
  background: var(--hull);
  border: 1px solid var(--line);
  clip-path: var(--cut-md);
}

.page-contact .ask-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.page-contact .ask-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: clamp(16px, 2.4vw, 24px);
}

.page-contact .ask-tabs label {
  padding: 8px 15px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--steel);
  background: rgba(30, 63, 92, 0.25);
  border: 1px solid var(--line);
  clip-path: var(--cut-sm);
  cursor: pointer;
  transition: color 180ms var(--ease), background-color 180ms var(--ease),
    border-color 180ms var(--ease);
}

.page-contact .ask-tabs label:hover {
  color: var(--mist);
  border-color: var(--steel);
}

.page-contact #ask-entry:checked ~ .ask-tabs label[for="ask-entry"],
.page-contact #ask-match:checked ~ .ask-tabs label[for="ask-match"],
.page-contact #ask-coop:checked ~ .ask-tabs label[for="ask-coop"] {
  color: var(--deep);
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-contact #ask-entry:focus-visible ~ .ask-tabs label[for="ask-entry"],
.page-contact #ask-match:focus-visible ~ .ask-tabs label[for="ask-match"],
.page-contact #ask-coop:focus-visible ~ .ask-tabs label[for="ask-coop"] {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-contact .ask-lists {
  min-height: 172px;
}

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

.page-contact #ask-entry:checked ~ .ask-lists #ask-list-entry,
.page-contact #ask-match:checked ~ .ask-lists #ask-list-match,
.page-contact #ask-coop:checked ~ .ask-lists #ask-list-coop {
  display: block;
}

.page-contact .ask-list li {
  position: relative;
  padding: 9px 0 9px 24px;
  font-size: 14.5px;
  line-height: 1.68;
  color: var(--ink-dim);
  border-bottom: 1px dashed rgba(30, 63, 92, 0.72);
}

.page-contact .ask-list li:last-child {
  border-bottom: 0;
}

.page-contact .ask-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 18px;
  width: 10px;
  height: 1px;
  background: var(--mint);
}

.page-contact .ask-hint {
  margin: 16px 0 0;
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
}

.page-contact .ask-hint .num {
  color: var(--steel);
}

.page-contact .ask-figure {
  margin: 0;
  overflow: hidden;
  clip-path: var(--cut-md);
}

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

/* ---------- 回复节奏 ---------- */
.page-contact .rhythm-section {
  padding-top: clamp(42px, 7vw, 86px);
}

.page-contact .section-head {
  margin-bottom: 0;
}

.page-contact .rhythm-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-contact .rhythm-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px 26px;
  padding: clamp(16px, 2.4vw, 22px) 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .rhythm-key {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--cyan);
}

.page-contact .rhythm-item:nth-child(2) .rhythm-key { color: var(--orange); }
.page-contact .rhythm-item:nth-child(3) .rhythm-key { color: var(--mint); }

.page-contact .rhythm-text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--ink-dim);
}

/* ---------- 合作与纠错 ---------- */
.page-contact .collab-section {
  padding-top: clamp(42px, 7vw, 86px);
}

.page-contact .collab-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--pc-gap);
}

.page-contact .collab-card {
  padding: clamp(22px, 3vw, 32px);
  background: linear-gradient(150deg, rgba(59, 46, 143, 0.4), rgba(6, 26, 46, 0.92));
  border: 1px solid var(--line);
  border-left: 3px solid var(--indigo);
  clip-path: var(--cut-md);
  transition: transform 240ms var(--ease), border-left-color 240ms var(--ease);
}

.page-contact .collab-card:last-child {
  border-left-color: var(--wine);
}

.page-contact .collab-card:hover,
.page-contact .collab-card:focus-within {
  transform: translateY(-3px);
  border-left-color: var(--cyan);
}

.page-contact .collab-card h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  color: var(--mist);
}

.page-contact .collab-card p {
  margin: 0 0 14px;
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--ink-dim);
}

.page-contact .collab-card .collab-link {
  margin: 0;
}

.page-contact .collab-card a {
  font-size: 13.5px;
  letter-spacing: 0.04em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 243, 208, 0.35);
  transition: border-color 180ms var(--ease), color 180ms var(--ease);
}

.page-contact .collab-card a:hover,
.page-contact .collab-card a:focus-visible {
  border-bottom-color: var(--cyan);
}

/* ---------- 收尾 ---------- */
.page-contact .contact-closing .serif-note {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(15px, 2.3vw, 19px);
  line-height: 1.7;
  color: var(--ink-faint);
  max-width: 34em;
}

/* ---------- 焦点可见 ---------- */
.page-contact a:focus-visible,
.page-contact [tabindex="0"]:focus-visible,
.page-contact summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* ---------- 桌面断点 ---------- */
@media (min-width: 880px) {
  .page-contact .channel-row {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .ask-grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  }
}

@media (min-width: 820px) {
  .page-contact .collab-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-contact .rhythm-item {
    grid-template-columns: minmax(0, 230px) minmax(0, 1fr);
    align-items: baseline;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .collab-card,
  .page-contact .ask-tabs label,
  .page-contact .breadcrumbs a {
    transition: none;
  }
}
<<<END>>>