.page-contact {
  --contact-panel: #FBF6EB;
  --contact-rule: rgba(21, 25, 27, 0.16);
  background: var(--paper);
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding-top: 18px;
  padding-bottom: clamp(34px, 5vw, 58px);
  border-bottom: 1px solid var(--contact-rule);
  background:
    repeating-linear-gradient(90deg, transparent 0 79px, rgba(21, 25, 27, 0.045) 79px 80px),
    linear-gradient(180deg, rgba(228, 216, 194, 0.72), rgba(243, 236, 221, 0) 82%);
}

.page-contact .crumbs {
  margin-bottom: clamp(24px, 3.6vw, 44px);
}

.page-contact .hero-grid {
  display: grid;
  gap: 28px;
}

.page-contact .hero-main h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(32px, 5.4vw, 62px);
  line-height: 1.14;
  letter-spacing: -0.01em;
  margin: 10px 0 0;
  max-width: 15em;
}

.page-contact .hero-lead {
  margin: 20px 0 0;
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--mist);
}

.page-contact .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-contact .hero-side {
  position: relative;
  background: var(--forest);
  color: var(--paper);
  padding: 26px 22px 22px;
  border-radius: 0;
}

.page-contact .hero-side::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 44px;
  height: 44px;
  border-top: 1px solid var(--gold);
  border-right: 1px solid var(--gold);
}

.page-contact .side-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-contact .side-list {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 11px;
}

.page-contact .side-list li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-light);
  font-size: 13.5px;
}

.page-contact .side-k {
  color: rgba(243, 236, 221, 0.72);
  flex: 0 0 auto;
}

.page-contact .side-v {
  font-family: var(--font-mono);
  font-size: 13px;
  text-align: right;
  color: var(--paper);
}

.page-contact .side-foot {
  margin: 18px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(243, 236, 221, 0.66);
}

/* ---------- 章节骨架 ---------- */
.page-contact .contact-section {
  padding-top: clamp(40px, 6vw, 76px);
  padding-bottom: clamp(40px, 6vw, 76px);
  border-bottom: 1px solid var(--contact-rule);
}

.page-contact .contact-section--tint {
  background: linear-gradient(180deg, rgba(228, 216, 194, 0.5), rgba(228, 216, 194, 0.16));
}

.page-contact .section-head {
  max-width: 62ch;
  margin-bottom: clamp(24px, 3.6vw, 40px);
}

.page-contact .section-head .section-title {
  margin-top: 8px;
}

/* ---------- 渠道 ---------- */
.page-contact .channel-layout {
  display: grid;
  gap: 26px;
}

.page-contact .channel-grid {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: var(--line-strong);
  border: 1px solid var(--line-strong);
}

.page-contact .channel-card {
  background: var(--paper);
  padding: 22px 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: background 240ms var(--ease);
}

.page-contact .channel-card:hover {
  background: var(--contact-panel);
}

.page-contact .channel-icon {
  color: var(--lake);
  line-height: 0;
  margin-bottom: 6px;
}

.page-contact .channel-role {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--ochre);
}

.page-contact .channel-value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.5;
  color: var(--ink);
  word-break: break-word;
}

.page-contact .channel-desc {
  margin: 6px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .channel-figure {
  margin: 0;
  border: 1px solid var(--line-strong);
  background: var(--contact-panel);
}

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

.page-contact .channel-figure figcaption {
  padding: 12px 14px;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--mist);
  border-top: 1px solid var(--contact-rule);
}

/* ---------- 反馈服务台 ---------- */
.page-contact .desk-grid {
  display: grid;
  gap: 26px;
}

.page-contact .desk-panel {
  background: var(--paper);
  border: 1px solid var(--line-strong);
  padding: clamp(20px, 3vw, 34px);
}

.page-contact .desk-label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--ochre);
}

.page-contact .topic-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 26px;
}

.page-contact .topic input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
  pointer-events: none;
}

.page-contact .topic span {
  display: inline-block;
  padding: 9px 16px;
  border: 1px solid var(--line-strong);
  font-size: 13.5px;
  letter-spacing: 0.04em;
  color: var(--ink);
  cursor: pointer;
  transition: background 200ms var(--ease), color 200ms var(--ease), border-color 200ms var(--ease);
}

.page-contact .topic input:checked + span {
  background: var(--lake);
  border-color: var(--lake);
  color: var(--paper);
}

.page-contact .topic input:focus-visible + span {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

.page-contact .field-grid {
  display: grid;
  gap: 18px;
}

.page-contact .field {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.page-contact .field label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-contact .field input,
.page-contact .field textarea {
  width: 100%;
  box-sizing: border-box;
  border: 1px solid var(--line-strong);
  border-radius: 0;
  background: var(--contact-panel);
  padding: 11px 13px;
  font-family: var(--font-body);
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--ink);
  transition: border-color 180ms var(--ease), background 180ms var(--ease);
}

.page-contact .field textarea {
  resize: vertical;
  min-height: 132px;
}

.page-contact .field input::placeholder,
.page-contact .field textarea::placeholder {
  color: rgba(82, 102, 107, 0.72);
}

.page-contact .field input:focus,
.page-contact .field textarea:focus {
  outline: none;
  border-color: var(--lake);
  background: #FFFBF2;
  box-shadow: inset 0 0 0 1px var(--lake);
}

.page-contact .field input:required:invalid:not(:placeholder-shown),
.page-contact .field textarea:required:invalid:not(:placeholder-shown) {
  border-color: var(--ochre);
  background: rgba(156, 81, 40, 0.06);
}

.page-contact .desk-actions {
  margin-top: 26px;
  padding-top: 22px;
  border-top: 1px solid var(--contact-rule);
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: flex-start;
}

.page-contact .desk-hint {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--mist);
  max-width: 46ch;
}

.page-contact .desk-side {
  border-top: 2px solid var(--forest);
  padding-top: 20px;
}

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

.page-contact .step {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--contact-rule);
}

.page-contact .step-num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--gold);
  letter-spacing: 0.06em;
  padding-top: 2px;
}

.page-contact .step-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.page-contact .step-text {
  margin: 5px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .desk-side .note {
  margin-top: 20px;
  font-size: 12.5px;
}

/* ---------- 服务时间 ---------- */
.page-contact .timing-grid {
  display: grid;
  gap: 26px;
  align-items: start;
}

.page-contact .timing-figure {
  margin: 0;
  border: 1px solid var(--line-strong);
}

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

.page-contact .timing-figure figcaption {
  padding: 11px 13px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
  border-top: 1px solid var(--contact-rule);
  background: var(--contact-panel);
}

.page-contact .timing-body .section-title {
  margin: 8px 0 16px;
}

.page-contact .timing-list {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-contact .timing-list li {
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 11px 0;
  border-top: 1px solid var(--contact-rule);
  font-size: 13.5px;
  color: var(--mist);
}

.page-contact .timing-list .data-num {
  font-size: 15px;
  color: var(--lake-deep);
}

/* ---------- 纠错与合作 ---------- */
.page-contact .duo-grid {
  display: grid;
  gap: 22px;
}

.page-contact .duo-card {
  background: var(--paper);
  border: 1px solid var(--line-strong);
  border-top-width: 4px;
  padding: clamp(20px, 3vw, 30px);
  display: flex;
  flex-direction: column;
}

.page-contact .duo-card--ochre {
  border-top-color: var(--ochre);
}

.page-contact .duo-card--lake {
  border-top-color: var(--lake);
}

.page-contact .duo-kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--mist);
}

.page-contact .duo-title {
  margin: 10px 0 12px;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.4vw, 24px);
  line-height: 1.35;
  color: var(--ink);
}

.page-contact .duo-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist);
}

.page-contact .duo-list {
  margin: 18px 0 22px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
}

.page-contact .duo-list li {
  position: relative;
  padding-left: 18px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ink);
}

.page-contact .duo-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 1px;
  background: var(--gold);
}

.page-contact .duo-card .link-more {
  margin-top: auto;
  align-self: flex-start;
}

/* ---------- 常见疑问 ---------- */
.page-contact .faq-wrap {
  display: grid;
  gap: 26px;
}

.page-contact .faq-head {
  align-self: start;
}

.page-contact .faq-head .section-note {
  margin-bottom: 18px;
}

.page-contact .faq-list {
  border-bottom: 1px solid var(--contact-rule);
}

.page-contact .faq-item {
  border-top: 1px solid var(--contact-rule);
}

.page-contact .faq-item summary {
  position: relative;
  cursor: pointer;
  list-style: none;
  padding: 17px 34px 17px 0;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
}

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

.page-contact .faq-item summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 15px;
  font-family: var(--font-mono);
  font-size: 17px;
  color: var(--ochre);
}

.page-contact .faq-item[open] summary::after {
  content: "–";
}

.page-contact .faq-item p {
  margin: 0 0 18px;
  padding-right: 20px;
  font-size: 13.8px;
  line-height: 1.85;
  color: var(--mist);
  max-width: 62ch;
}

/* ---------- 地址与备案信息条 ---------- */
.page-contact .contact-belt {
  position: relative;
  background: var(--forest);
  color: var(--paper);
  padding-top: clamp(34px, 5vw, 58px);
  padding-bottom: clamp(30px, 4vw, 48px);
}

.page-contact .contact-belt::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: repeating-linear-gradient(90deg, var(--gold) 0 9px, transparent 9px 18px);
}

.page-contact .belt-grid {
  display: grid;
  gap: 20px;
}

.page-contact .belt-block {
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-light);
}

.page-contact .belt-label {
  margin: 0 0 7px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.22em;
  color: var(--gold);
}

.page-contact .belt-value {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--paper);
  word-break: break-word;
}

.page-contact .belt-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin-top: 22px;
}

.page-contact .belt-links a {
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: rgba(243, 236, 221, 0.82);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-contact .belt-links a:hover,
.page-contact .belt-links a:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--gold);
}

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

  .page-contact .field--full {
    grid-column: 1 / -1;
  }

  .page-contact .desk-actions {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .page-contact .belt-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 26px;
  }
}

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

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

@media (min-width: 900px) {
  .page-contact .hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(32px, 4.5vw, 64px);
    align-items: end;
  }

  .page-contact .channel-layout {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
    gap: clamp(24px, 3vw, 40px);
  }

  .page-contact .desk-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(28px, 4vw, 56px);
  }

  .page-contact .desk-side {
    position: sticky;
    top: 96px;
  }

  .page-contact .timing-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: center;
  }

  .page-contact .faq-wrap {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: clamp(28px, 4vw, 56px);
  }
}

@media (min-width: 1100px) {
  .page-contact .channel-layout {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .topic span,
  .page-contact .field input,
  .page-contact .field textarea,
  .page-contact .belt-links a {
    transition: none;
  }
}