.page-contact {
  background: var(--ink-950);
  color: var(--paper-50);
  overflow-x: hidden;
}

/* 面包屑 */
.page-contact .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 18px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--text-mute);
}
.page-contact .breadcrumb a {
  color: var(--text-mute);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}
.page-contact .breadcrumb a:hover,
.page-contact .breadcrumb a:focus-visible {
  color: var(--pulse-500);
  border-bottom-color: var(--pulse-500);
}

/* 首屏 */
.page-contact .contact-hero {
  position: relative;
  padding: 30px 0 44px;
  overflow: hidden;
}
.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--ink-700) 1px, transparent 1px),
    linear-gradient(90deg, var(--ink-700) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: 0.2;
  pointer-events: none;
}
.page-contact .contact-hero > .wrap {
  position: relative;
  z-index: 1;
  max-width: var(--maxw);
}
.page-contact .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--pulse-500);
  margin: 0 0 12px;
}
.page-contact .eyebrow--amber {
  color: var(--amber-500);
}
.page-contact .h1 {
  font-family: var(--font-display);
  font-size: clamp(34px, 7.4vw, 68px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  margin: 0 0 16px;
  color: var(--paper-50);
}
.page-contact .lede {
  margin: 0;
  max-width: 36em;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-mute);
}

/* 区块通用 */
.page-contact .section {
  padding: 8px 0 56px;
}
.page-contact .section__head {
  margin-bottom: 24px;
}
.page-contact .h2 {
  font-family: var(--font-display);
  font-size: clamp(24px, 4.6vw, 34px);
  line-height: 1.18;
  letter-spacing: -0.01em;
  margin: 0 0 12px;
  color: var(--paper-50);
}
.page-contact .channel-head__note {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-mute);
}

/* 三栏渠道板 */
.page-contact .channel-board {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  align-items: stretch;
}
.page-contact .channel-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 24px 22px 26px;
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-content);
  background: var(--ink-900);
  overflow: hidden;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}
.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within {
  transform: translateY(-2px);
  box-shadow: 0 18px 42px rgba(4, 18, 15, 0.6);
}
.page-contact .channel-card__label {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-mute);
}
.page-contact .channel-card__label span {
  color: var(--pulse-500);
  font-variant-numeric: tabular-nums;
}
.page-contact .channel-note {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-mute);
}
.page-contact .channel-meta {
  margin: auto 0 0;
  padding-top: 10px;
  border-top: 1px solid var(--ink-700);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  line-height: 1.6;
  color: var(--amber-500);
}

/* 邮箱卡 */
.page-contact .channel-card--mail {
  border-color: var(--pulse-500);
  box-shadow: inset 0 0 0 1px rgba(43, 232, 165, 0.16);
}
.page-contact .channel-card--mail:hover,
.page-contact .channel-card--mail:focus-within {
  border-color: var(--pulse-200);
}
.page-contact .channel-mail {
  align-self: flex-start;
  max-width: 100%;
  font-family: var(--font-mono);
  font-size: clamp(16px, 4.4vw, 22px);
  line-height: 1.4;
  letter-spacing: 0.01em;
  color: var(--pulse-200);
  text-decoration: none;
  word-break: break-all;
  border-bottom: 1px dashed rgba(155, 251, 211, 0.45);
  padding-bottom: 4px;
}
.page-contact .channel-mail:hover,
.page-contact .channel-mail:focus-visible {
  color: var(--pulse-500);
  border-bottom-color: var(--pulse-500);
}

/* 电话卡（玻璃层） */
.page-contact .channel-card--phone {
  background:
    linear-gradient(158deg, rgba(43, 232, 165, 0.12), rgba(8, 32, 27, 0.92) 62%),
    var(--ink-900);
  border-color: var(--ink-700);
}
.page-contact .channel-phone {
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: clamp(28px, 8vw, 42px);
  line-height: 1.05;
  letter-spacing: 0.08em;
  font-variant-numeric: tabular-nums;
  color: var(--paper-50);
  text-decoration: none;
}
.page-contact .channel-phone:hover,
.page-contact .channel-phone:focus-visible {
  color: var(--pulse-200);
}

/* 地址卡 */
.page-contact .channel-card--address {
  padding: 0;
  background: var(--ink-950);
  border-color: var(--ink-700);
}
.page-contact .channel-card__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.26;
  filter: saturate(0.55) contrast(1.05);
}
.page-contact .channel-card__body {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 24px 22px 26px;
  height: 100%;
}
.page-contact .channel-address {
  font-style: normal;
  font-size: 15px;
  line-height: 1.85;
  color: var(--paper-50);
  letter-spacing: 0.01em;
}

/* 咨询前准备 */
.page-contact .prep-section {
  padding: 8px 0 56px;
}
.page-contact .prep-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}
.page-contact .prep-intro {
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-mute);
  max-width: 34em;
}
.page-contact .prep-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-contact .prep-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-data);
  background: var(--ink-900);
  font-size: 15px;
  line-height: 1.7;
  color: var(--paper-50);
  cursor: pointer;
  transition: border-color 160ms ease, background 160ms ease;
}
.page-contact .prep-item:hover {
  border-color: var(--pulse-500);
}
.page-contact .prep-item strong {
  font-weight: 500;
  color: var(--pulse-200);
}
.page-contact .prep-item input {
  appearance: none;
  -webkit-appearance: none;
  flex: none;
  width: 18px;
  height: 18px;
  margin: 4px 0 0;
  border: 1px solid var(--pulse-500);
  border-radius: 4px;
  background: transparent;
  position: relative;
  cursor: pointer;
}
.page-contact .prep-item input:checked {
  background: var(--pulse-500);
}
.page-contact .prep-item input:checked::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 1px;
  width: 5px;
  height: 10px;
  border-right: 2px solid var(--ink-950);
  border-bottom: 2px solid var(--ink-950);
  transform: rotate(45deg);
}
.page-contact .prep-item input:focus-visible {
  outline: 2px solid var(--pulse-200);
  outline-offset: 2px;
}
.page-contact .prep-item:has(input:checked) {
  border-color: var(--pulse-500);
  background: rgba(43, 232, 165, 0.08);
}
.page-contact .prep-figure {
  margin: 0;
  border-radius: var(--radius-content);
  overflow: hidden;
  border: 1px solid var(--ink-700);
  background: var(--ink-900);
}
.page-contact .prep-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(0.85);
}
.page-contact .prep-figure figcaption {
  padding: 14px 18px 16px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-mute);
  border-top: 1px solid var(--ink-700);
}

/* 响应时间 */
.page-contact .response-section {
  padding: 8px 0 40px;
}
.page-contact .response-strip {
  display: grid;
  gap: 1px;
  background: var(--ink-700);
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-content);
  overflow: hidden;
}
.page-contact .response-cell {
  padding: 20px 20px 22px;
  background: var(--ink-900);
}
.page-contact .response-cell__num {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(24px, 6.4vw, 32px);
  line-height: 1.1;
  letter-spacing: 0.02em;
  color: var(--pulse-500);
}
.page-contact .response-cell:nth-child(2) .response-cell__num {
  color: var(--amber-500);
}
.page-contact .response-cell:nth-child(3) .response-cell__num {
  color: var(--pulse-200);
}
.page-contact .response-cell__txt {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-mute);
}
.page-contact .response-foot {
  margin: 18px 0 0;
  max-width: 36em;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-mute);
}

/* 合作与媒体 */
.page-contact .partner-section {
  padding: 8px 0 48px;
}
.page-contact .partner-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  align-items: start;
  padding: 26px 22px;
  border: 1px solid var(--ink-700);
  border-left: 3px solid var(--amber-500);
  border-radius: var(--radius-content);
  background: var(--ink-900);
}
.page-contact .partner-copy p:not(.eyebrow) {
  margin: 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-mute);
}
.page-contact .partner-inner .btn--amber {
  justify-self: start;
  white-space: nowrap;
}

/* 备案与服务地区 */
.page-contact .registry-section {
  padding: 0 0 64px;
}
.page-contact .registry-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  padding: 18px 0 16px;
  border-top: 1px solid var(--ink-700);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--text-mute);
}
.page-contact .registry-item {
  margin: 0;
  display: flex;
  gap: 8px;
  align-items: baseline;
}
.page-contact .registry-key {
  color: var(--ink-700);
  filter: brightness(2.2);
  text-transform: uppercase;
  letter-spacing: 0.18em;
}
.page-contact .registry-links {
  margin: 0;
  max-width: 44em;
  font-size: 13px;
  line-height: 1.9;
  color: var(--text-mute);
}
.page-contact .registry-links a {
  color: var(--pulse-200);
  text-decoration: none;
  border-bottom: 1px solid rgba(155, 251, 211, 0.4);
}
.page-contact .registry-links a:hover,
.page-contact .registry-links a:focus-visible {
  color: var(--pulse-500);
  border-bottom-color: var(--pulse-500);
}

/* 焦点环 */
.page-contact a:focus-visible {
  outline: 2px solid var(--pulse-200);
  outline-offset: 3px;
  border-radius: 4px;
}

/* 平板及以上 */
@media (min-width: 720px) {
  .page-contact .contact-hero {
    padding: 44px 0 56px;
  }
  .page-contact .section {
    padding-bottom: 64px;
  }
  .page-contact .prep-section,
  .page-contact .response-section {
    padding-bottom: 64px;
  }
  .page-contact .response-strip {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-contact .partner-inner {
    grid-template-columns: 1fr auto;
    align-items: center;
    padding: 32px 34px;
    gap: 32px;
  }
  .page-contact .partner-inner .btn--amber {
    justify-self: end;
  }
}

/* 桌面：5 / 4 / 3 不等宽渠道板 */
@media (min-width: 900px) {
  .page-contact .channel-board {
    grid-template-columns: 5fr 4fr 3fr;
    gap: 24px;
  }
  .page-contact .channel-card--phone {
    transform: translateY(-8px);
  }
  .page-contact .channel-card--phone:hover,
  .page-contact .channel-card--phone:focus-within {
    transform: translateY(-10px);
  }
  .page-contact .prep-grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 44px;
    align-items: start;
  }
  .page-contact .h1 {
    max-width: 15em;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .channel-card--phone,
  .page-contact .prep-item {
    transition: none;
  }
  .page-contact .channel-card:hover,
  .page-contact .channel-card:focus-within,
  .page-contact .channel-card--phone:hover,
  .page-contact .channel-card--phone:focus-within {
    transform: none;
  }
}