.page-contact {
  --contact-gap: clamp(20px, 3.6vw, 48px);
  --contact-pad: clamp(20px, 3vw, 32px);
  --contact-block: clamp(56px, 7vw, 112px);
  position: relative;
  padding-bottom: clamp(72px, 9vw, 140px);
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumb {
  padding-block: clamp(20px, 3vw, 34px) clamp(14px, 2vw, 22px);
}

.page-contact .breadcrumb__item a {
  color: var(--muted-slate);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

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

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--contact-gap);
  padding-bottom: var(--contact-block);
  border-bottom: var(--line);
}

.page-contact .contact-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(2rem, 5vw, 4.1rem);
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--paper-mist);
}

.page-contact .contact-hero__text {
  margin: 22px 0 0;
  max-width: 44ch;
  font-size: 16.5px;
  line-height: 1.75;
  color: var(--paper-mist);
}

.page-contact .contact-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px clamp(18px, 3vw, 40px);
  margin: 30px 0 0;
  padding-top: 22px;
  border-top: var(--line);
}

.page-contact .contact-hero__meta-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 132px;
}

.page-contact .contact-hero__meta-item dt {
  font-family: var(--font-serif);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  color: var(--muted-slate);
}

.page-contact .contact-hero__meta-item dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--paper-mist);
}

.page-contact .contact-hero__figure {
  margin: 0;
  align-self: end;
}

.page-contact .contact-hero__figure .figure__frame {
  border: var(--line);
  background: linear-gradient(150deg, rgba(53, 224, 200, 0.08), rgba(11, 26, 23, 0) 58%), var(--ink-layer);
}

/* ---------- 双栏主体 ---------- */
.page-contact .contact-board {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(40px, 5vw, 76px);
  padding-block: var(--contact-block);
  border-bottom: var(--line);
}

/* 联络卡片 */
.page-contact .channel-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--grid-line);
  border: var(--line);
}

.page-contact .channel-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(14px, 2vw, 22px);
  padding: var(--contact-pad);
  background: var(--ink-layer);
  transition: background-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within {
  background: #142c26;
  box-shadow: var(--shadow-soft), inset 3px 0 0 0 var(--cyan-signal);
}

.page-contact .channel-card__index {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--muted-slate);
  padding-top: 3px;
}

.page-contact .channel-card__title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--muted-slate);
  text-transform: uppercase;
}

.page-contact .channel-card__value {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(0.94rem, 1.5vw, 1.12rem);
  line-height: 1.5;
  color: var(--paper-mist);
  word-break: break-word;
}

.page-contact .channel-card__value a {
  color: var(--cyan-signal);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 224, 200, 0.35);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

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

.page-contact .channel-card--phone .channel-card__value a {
  color: var(--electric-yellow);
  border-bottom-color: rgba(242, 226, 75, 0.35);
}

.page-contact .channel-card--phone .channel-card__value a:hover,
.page-contact .channel-card--phone .channel-card__value a:focus-visible {
  border-bottom-color: var(--electric-yellow);
}

.page-contact .channel-card__note {
  margin: 12px 0 0;
  max-width: 46ch;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted-slate);
}

/* 纠错模板 */
.page-contact .contact-template__intro {
  margin: 0 0 clamp(22px, 3vw, 32px);
  max-width: 48ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--paper-mist);
}

.page-contact .tpl-list {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-contact .tpl-list::before {
  content: "";
  position: absolute;
  top: 12px;
  bottom: 12px;
  left: 15px;
  width: 1px;
  background: var(--grid-line);
}

.page-contact .tpl-item {
  position: relative;
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 12px;
  padding-block: 14px;
}

.page-contact .tpl-item__check {
  position: absolute;
  top: 18px;
  left: 0;
  width: 30px;
  height: 30px;
  margin: 0;
  opacity: 0;
  cursor: pointer;
}

.page-contact .tpl-item__check + .tpl-item__label {
  grid-column: 2;
  display: grid;
  gap: 5px;
  cursor: pointer;
}

.page-contact .tpl-item__label::before {
  content: "";
  position: absolute;
  top: 18px;
  left: 2px;
  width: 26px;
  height: 26px;
  border: 1px solid var(--grid-line);
  border-radius: 50%;
  background: var(--ink-base);
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-contact .tpl-item__label::after {
  content: "";
  position: absolute;
  top: 27px;
  left: 10px;
  width: 10px;
  height: 6px;
  border-left: 2px solid var(--ink-base);
  border-bottom: 2px solid var(--ink-base);
  transform: rotate(-45deg) scale(0.4);
  opacity: 0;
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-contact .tpl-item__check:focus-visible + .tpl-item__label::before {
  outline: 2px solid var(--focus-ring);
  outline-offset: 3px;
}

.page-contact .tpl-item__check:checked + .tpl-item__label::before {
  border-color: var(--cyan-signal);
  background: var(--cyan-signal);
}

.page-contact .tpl-item__check:checked + .tpl-item__label::after {
  opacity: 1;
  transform: rotate(-45deg) scale(1);
}

.page-contact .tpl-item__check:checked ~ .tpl-item__label .tpl-item__name {
  color: var(--cyan-signal);
}

.page-contact .tpl-item__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted-slate);
}

.page-contact .tpl-item__name {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 16px;
  color: var(--paper-mist);
  transition: color var(--dur) var(--ease);
}

.page-contact .tpl-item__desc {
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted-slate);
}

.page-contact .tpl-figure {
  margin: clamp(28px, 4vw, 44px) 0 0;
  max-width: 340px;
}

.page-contact .tpl-figure .figure__frame {
  border: var(--line);
  background:
    repeating-linear-gradient(0deg, rgba(30, 58, 51, 0.55) 0 1px, transparent 1px 24px),
    repeating-linear-gradient(90deg, rgba(30, 58, 51, 0.55) 0 1px, transparent 1px 24px),
    var(--ink-layer);
}

/* ---------- 来信须知 ---------- */
.page-contact .contact-scope {
  padding-block: var(--contact-block);
  border-bottom: var(--line);
}

.page-contact .scope-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--grid-line);
  border: var(--line);
}

.page-contact .scope-card {
  padding: var(--contact-pad);
  background: var(--ink-layer);
  transition: background-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-contact .scope-card:hover {
  background: #142c26;
  box-shadow: inset 0 -3px 0 0 var(--cyan-signal);
}

.page-contact .scope-card__label {
  display: inline-block;
  font-family: var(--font-serif);
  font-size: 12.5px;
  letter-spacing: 0.18em;
  color: var(--cyan-signal);
  padding-bottom: 8px;
  border-bottom: 1px solid var(--grid-line);
}

.page-contact .scope-card__title {
  margin: 18px 0 0;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: clamp(1.05rem, 1.8vw, 1.24rem);
  line-height: 1.4;
  color: var(--paper-mist);
}

.page-contact .scope-card__text {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--muted-slate);
}

/* ---------- 响应时间 ---------- */
.page-contact .contact-timing {
  padding-block: var(--contact-block);
  border-bottom: var(--line);
}

.page-contact .timing-list {
  margin: 0;
  border-top: var(--line);
}

.page-contact .timing-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  padding-block: 20px;
  border-bottom: var(--line);
  transition: background-color var(--dur) var(--ease);
}

.page-contact .timing-row:hover {
  background: rgba(53, 224, 200, 0.04);
}

.page-contact .timing-row__key {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 13.5px;
  letter-spacing: 0.06em;
  color: var(--cyan-signal);
}

.page-contact .timing-row__val {
  margin: 0;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--paper-mist);
}

.page-contact .timing-foot {
  margin: clamp(24px, 3vw, 34px) 0 0;
  max-width: 62ch;
  padding-left: 16px;
  border-left: 1px solid var(--grid-line);
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted-slate);
}

/* ---------- 地域与备案 ---------- */
.page-contact .contact-record {
  padding-top: var(--contact-block);
}

.page-contact .record-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--grid-line);
  border: var(--line);
}

.page-contact .record-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 20px;
  padding: 18px var(--contact-pad);
  background: var(--ink-layer);
}

.page-contact .record-item__key {
  min-width: 84px;
  font-family: var(--font-serif);
  font-size: 12.5px;
  letter-spacing: 0.16em;
  color: var(--muted-slate);
}

.page-contact .record-item__val {
  font-family: var(--font-mono);
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--paper-mist);
  word-break: break-word;
}

.page-contact .record-note {
  margin: 22px 0 0;
  max-width: 64ch;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted-slate);
}

.page-contact .record-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3vw, 34px);
}

.page-contact .record-links .btn {
  text-decoration: none;
}

/* ---------- 焦点统一 ---------- */
.page-contact a:focus-visible,
.page-contact .btn:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-contact .scope-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .timing-row {
    grid-template-columns: minmax(0, 200px) minmax(0, 1fr);
    align-items: baseline;
    gap: 24px;
  }

  .page-contact .record-item--wide {
    grid-column: 1 / -1;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    align-items: end;
    gap: clamp(32px, 5vw, 88px);
  }

  .page-contact .contact-board {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    gap: clamp(36px, 5vw, 84px);
  }
}

@media (min-width: 1080px) {
  .page-contact .record-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact *,
  .page-contact *::before,
  .page-contact *::after {
    transition-duration: 1ms !important;
    animation-duration: 1ms !important;
  }
}