.page-contact {
  --contact-pad: clamp(44px, 7vw, 92px);
  --contact-grid-line: rgba(184, 191, 209, 0.18);
  background: var(--paper);
  color: var(--text);
}

.page-contact img {
  max-width: 100%;
  height: auto;
  display: block;
}

.page-contact .contact-crumb-bar {
  padding: 20px 0 0;
  background: var(--paper);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--on-ink);
  padding: clamp(34px, 5vw, 64px) 0 clamp(46px, 7vw, 92px);
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.7;
  background:
    radial-gradient(560px 300px at 92% 4%, rgba(255, 107, 44, 0.22), transparent 68%),
    linear-gradient(var(--line-dark-soft) 1px, transparent 1px) 0 0 / 100% 72px,
    linear-gradient(90deg, var(--line-dark-soft) 1px, transparent 1px) 0 0 / 72px 100%;
}

.page-contact .contact-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(28px, 5vw, 54px);
}

.page-contact .contact-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--action);
}

.page-contact .kicker-dot {
  width: 7px;
  height: 7px;
  background: var(--action);
}

.page-contact .contact-title {
  font-family: var(--font-display);
  font-size: clamp(29px, 5.2vw, 54px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  font-weight: 700;
  color: var(--on-ink);
  margin: 16px 0 0;
  max-width: 18em;
}

.page-contact .contact-lede {
  margin: 20px 0 0;
  max-width: 34em;
  font-size: clamp(14.5px, 1.6vw, 16.5px);
  line-height: 1.9;
  color: var(--on-ink-dim);
}

.page-contact .contact-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.page-contact .contact-hero-actions .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.page-contact .hero-facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(132px, 1fr));
  gap: 18px;
  margin: 30px 0 0;
  padding: 22px 0 0;
  border-top: 1px solid var(--line-dark);
}

.page-contact .hero-fact dt {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  color: var(--on-ink-dim);
}

.page-contact .hero-fact dd {
  margin: 6px 0 0;
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 6px;
}

.page-contact .hero-fact-num {
  font-family: var(--font-display);
  font-size: clamp(21px, 3vw, 30px);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--on-ink);
}

.page-contact .hero-fact-unit {
  font-size: 11.5px;
  color: var(--on-ink-dim);
}

.page-contact .contact-hero-visual {
  margin: 0;
  align-self: start;
}

.page-contact .hero-frame {
  padding: 10px;
  border: 1px solid var(--line-dark);
  background: rgba(255, 255, 255, 0.04);
}

.page-contact .hero-caption {
  margin: 12px 0 0;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--on-ink-dim);
  border-left: 2px solid var(--action);
  padding-left: 10px;
}

@media (min-width: 900px) {
  .page-contact .contact-hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
  }
}

/* ---------- 区块标题 ---------- */
.page-contact .contact-sec-head {
  display: grid;
  gap: 10px;
  margin: 0 0 clamp(24px, 4vw, 40px);
  max-width: 52em;
}

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

.page-contact .contact-sec-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(23px, 3.4vw, 35px);
  line-height: 1.22;
  letter-spacing: -0.015em;
  font-weight: 700;
  color: var(--text);
}

.page-contact .contact-sec-note {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-contact .contact-sec-head--dark .contact-sec-title {
  color: var(--on-ink);
}

.page-contact .contact-sec-head--dark .contact-sec-note {
  color: var(--on-ink-dim);
}

/* ---------- 通道 ---------- */
.page-contact .contact-channels {
  padding: var(--contact-pad) 0;
  background: var(--paper);
  border-bottom: 1px solid var(--line-light);
}

.page-contact .channel-grid {
  display: grid;
  gap: 16px;
}

.page-contact .channel-slot {
  background: #ffffff;
  border: 1px solid var(--line-light);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.page-contact .channel-slot > summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  gap: 6px;
  padding: 20px 18px;
}

.page-contact .channel-slot > summary::-webkit-details-marker {
  display: none;
}

.page-contact .channel-slot > summary::marker {
  content: "";
}

.page-contact .channel-slot > summary:focus-visible {
  outline: 2px solid var(--action);
  outline-offset: 2px;
}

.page-contact .channel-slot[open] {
  border-color: var(--action);
  box-shadow: inset 0 4px 0 var(--action);
}

.page-contact .channel-code {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  color: var(--ink-soft);
}

.page-contact .channel-name {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-contact .channel-fit {
  font-size: 13px;
  line-height: 1.65;
  color: var(--ink-soft);
}

.page-contact .channel-flag {
  justify-self: start;
  margin-top: 4px;
  padding: 3px 8px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: var(--lime-ink);
  background: var(--lime);
}

.page-contact .channel-flag--ink {
  color: var(--ink-soft);
  background: transparent;
  border: 1px solid var(--line-light);
}

.page-contact .channel-body {
  padding: 0 18px 22px;
  border-top: 1px dashed var(--line-light);
  margin-top: 2px;
  padding-top: 16px;
}

.page-contact .channel-body p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--text);
}

.page-contact .field-label {
  margin: 16px 0 0;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--ink-soft);
}

.page-contact .contact-points {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
  display: grid;
  gap: 6px;
}

.page-contact .contact-points li {
  position: relative;
  padding-left: 16px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text);
}

.page-contact .contact-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 6px;
  background: var(--action);
}

.page-contact .channel-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 18px;
}

.page-contact .channel-mono {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--ink-soft);
  word-break: break-all;
}

.page-contact .channel-phone {
  margin: 16px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(19px, 2.6vw, 24px);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text);
}

.page-contact .channel-hint {
  margin: 12px 0 0;
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--ink-soft);
}

@media (min-width: 820px) {
  .page-contact .channel-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-contact .channel-slot {
    display: flex;
    flex-direction: column;
  }
  .page-contact .channel-body {
    flex: 1 1 auto;
  }
}

/* ---------- 反馈信息卡 ---------- */
.page-contact .contact-card-sec {
  padding: var(--contact-pad) 0;
  background: var(--ink);
  color: var(--on-ink);
}

.page-contact .field-grid {
  display: grid;
  gap: 1px;
  background: var(--line-dark);
  border: 1px solid var(--line-dark);
}

.page-contact .field-cell {
  background: var(--ink);
  padding: 20px 18px;
  display: grid;
  gap: 6px;
  align-content: start;
}

.page-contact .field-code {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  color: var(--lime);
}

.page-contact .field-name {
  margin: 0;
  font-family: var(--font-display);
  font-size: 16.5px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--on-ink);
}

.page-contact .field-text {
  margin: 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--on-ink-dim);
}

.page-contact .mailto-bar {
  margin-top: 28px;
  padding-top: 22px;
  border-top: 1px dashed var(--line-dark);
  display: grid;
  gap: 14px;
}

.page-contact .mailto-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--on-ink-dim);
}

.page-contact .mailto-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-contact .mailto-row .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

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

@media (min-width: 1080px) {
  .page-contact .field-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-contact .field-cell--wide {
    grid-column: span 2;
  }
}

/* ---------- 时效 ---------- */
.page-contact .contact-sla {
  padding: var(--contact-pad) 0;
  background: var(--paper);
  border-bottom: 1px solid var(--line-light);
}

.page-contact .sla-grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-contact .sla-copy p {
  margin: 0 0 14px;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--ink-soft);
  max-width: 34em;
}

.page-contact .sla-copy p:last-child {
  margin-bottom: 0;
}

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

.page-contact .sla-item {
  display: grid;
  grid-template-columns: 14px minmax(0, 1fr);
  gap: 12px;
  padding: 18px 16px;
  background: #ffffff;
}

.page-contact .sla-dot {
  width: 10px;
  height: 10px;
  margin-top: 6px;
  border: 2px solid var(--mist);
  background: transparent;
}

.page-contact .sla-item--lime .sla-dot {
  border-color: var(--lime-ink);
  background: var(--lime);
}

.page-contact .sla-item h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 15.5px;
  font-weight: 700;
  color: var(--text);
}

.page-contact .sla-item p {
  margin: 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--ink-soft);
}

@media (min-width: 900px) {
  .page-contact .sla-grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    align-items: start;
  }
}

/* ---------- 流程 ---------- */
.page-contact .contact-flow {
  padding: var(--contact-pad) 0;
  background: var(--paper);
}

.page-contact .flow-visual {
  margin: 0 0 clamp(26px, 4vw, 42px);
  padding: 10px;
  background: var(--cream);
  border: 1px solid var(--line-light);
}

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

.page-contact .flow-item {
  position: relative;
  padding: 0 0 26px 26px;
  border-left: 2px solid var(--line-light);
}

.page-contact .flow-item:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-contact .flow-item::before {
  content: "";
  position: absolute;
  left: -8px;
  top: 2px;
  width: 14px;
  height: 14px;
  background: var(--paper);
  border: 2px solid var(--action);
}

.page-contact .flow-item:last-child::before {
  background: var(--action);
}

.page-contact .flow-item:focus-visible {
  outline: 2px solid var(--action);
  outline-offset: 4px;
}

.page-contact .flow-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--ink-soft);
}

.page-contact .flow-title {
  margin: 6px 0 8px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-contact .flow-text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--ink-soft);
  max-width: 30em;
}

.page-contact .flow-extra {
  margin: 8px 0 0;
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--ink-soft);
  border-left: 2px solid var(--lime);
  padding-left: 10px;
  max-width: 30em;
}

.page-contact .flow-extra a {
  color: var(--text);
  text-decoration-color: var(--action);
  text-underline-offset: 3px;
}

@media (hover: hover) and (pointer: fine) {
  .page-contact .flow-extra {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    margin-top: 0;
    border-left-color: transparent;
    transition: max-height 0.25s ease, opacity 0.25s ease, margin 0.25s ease;
  }
  .page-contact .flow-item:hover .flow-extra,
  .page-contact .flow-item:focus-within .flow-extra {
    max-height: 8em;
    opacity: 1;
    margin-top: 8px;
    border-left-color: var(--lime);
  }
}

@media (min-width: 900px) {
  .page-contact .flow-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-contact .flow-item {
    border-left: 0;
    border-top: 2px solid var(--line-light);
    padding: 26px 20px 0 0;
  }
  .page-contact .flow-item:last-child {
    border-top-color: transparent;
    padding-bottom: 0;
  }
  .page-contact .flow-item::before {
    left: 0;
    top: -9px;
  }
}

/* ---------- 联系信息说明牌 ---------- */
.page-contact .contact-info {
  padding: var(--contact-pad) 0;
  background: var(--paper);
}

.page-contact .info-board {
  background: var(--cream);
  border: 1px solid var(--line-light);
  padding: clamp(22px, 4vw, 44px);
  display: grid;
  gap: clamp(22px, 4vw, 40px);
}

.page-contact .info-board .contact-sec-head {
  margin-bottom: 0;
}

.page-contact .info-body {
  display: grid;
  gap: 18px;
  align-content: start;
}

.page-contact .info-list {
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-contact .info-row {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-top: 1px solid var(--line-light);
}

.page-contact .info-row:last-child {
  border-bottom: 1px solid var(--line-light);
}

.page-contact .info-row dt {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--ink-soft);
}

.page-contact .info-row dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text);
}

.page-contact .info-mono {
  font-family: var(--font-mono);
  word-break: break-all;
}

.page-contact .info-note {
  margin: 0;
  padding-left: 12px;
  border-left: 3px solid var(--action);
  font-size: 13px;
  line-height: 1.85;
  color: var(--text);
}

.page-contact .info-links {
  margin: 0;
  font-size: 13px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-contact .info-links a {
  color: var(--text);
  text-decoration-color: var(--action);
  text-underline-offset: 3px;
}

@media (min-width: 560px) {
  .page-contact .info-row {
    grid-template-columns: 9em minmax(0, 1fr);
    gap: 14px;
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-contact .info-board {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    align-items: start;
  }
}