.page-contact {
  --cc-ring: 0 0 0 2px var(--c-ember);
}

/* ============ 首屏 ============ */
.page-contact .contact-hero {
  padding: clamp(20px, 4vw, 40px) 0 clamp(48px, 8vw, 96px);
  background:
    radial-gradient(120% 90% at 88% -10%, rgba(79, 163, 199, 0.30), rgba(234, 244, 249, 0) 62%),
    linear-gradient(180deg, var(--c-mist) 0%, var(--c-cloud) 82%);
}

.page-contact .contact-hero__grid {
  display: grid;
  gap: clamp(26px, 5vw, 44px);
  align-items: end;
  margin-top: clamp(20px, 4vw, 40px);
}

.page-contact .contact-hero__kicker {
  display: inline-block;
  margin: 0 0 18px;
  padding-left: 10px;
  border-left: 4px solid var(--c-ember);
  font-size: 12.5px;
  letter-spacing: 0.16em;
  color: var(--c-dawn);
  text-transform: uppercase;
}

.page-contact .contact-hero h1 {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.05rem, 5.6vw, 3.5rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--c-ink);
  text-wrap: balance;
}

.page-contact .contact-hero__lead {
  margin: 0 0 26px;
  max-width: 60ch;
  font-size: 17px;
  line-height: 1.75;
  color: var(--c-text);
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-contact .contact-hero__media {
  margin: 0;
  border: var(--edge);
  box-shadow: var(--lift);
  background: var(--c-ink);
  overflow: hidden;
}

.page-contact .contact-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

/* ============ 联系卡片 ============ */
.page-contact .contact-cards {
  display: grid;
  gap: 20px;
  margin-top: clamp(30px, 5vw, 52px);
}

.page-contact .contact-card {
  position: relative;
  padding: 26px 22px 28px;
  background: var(--c-cloud);
  border: var(--edge);
  box-shadow: var(--lift);
  transition: transform 200ms var(--ease), box-shadow 200ms var(--ease);
}

.page-contact .contact-card:hover,
.page-contact .contact-card:focus-within {
  transform: translate(2px, 2px);
  box-shadow: 4px 4px 0 var(--c-line);
}

.page-contact .contact-card--ink {
  background: var(--c-ink);
  color: var(--c-cloud);
}

.page-contact .contact-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  margin-bottom: 20px;
  border: 2px solid currentColor;
  color: var(--c-dawn);
}

.page-contact .contact-card--ink .contact-card__icon {
  color: var(--c-ember);
}

.page-contact .contact-card__label {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--c-mute);
}

.page-contact .contact-card--ink .contact-card__label {
  color: var(--c-mid);
}

.page-contact .contact-card__value {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: clamp(0.98rem, 2vw, 1.14rem);
  line-height: 1.45;
  letter-spacing: -0.01em;
  color: var(--c-num);
  overflow-wrap: anywhere;
}

.page-contact .contact-card--ink .contact-card__value {
  color: #E6F3FA;
}

.page-contact .contact-card__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--c-text);
}

.page-contact .contact-card--ink .contact-card__desc {
  color: #B9CFDD;
}

/* ============ 标签页 ============ */
.page-contact .tabs {
  margin-top: clamp(28px, 4vw, 44px);
}

.page-contact .tabs__tab {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.01em;
}

.page-contact .tabs__panel {
  padding-top: 30px;
}

.page-contact .prep-list {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .prep-list__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  font-size: 15.5px;
  line-height: 1.72;
}

.page-contact .prep-list__marker {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--c-dawn);
  letter-spacing: 0.04em;
}

.page-contact .prep-note {
  margin: 24px 0 0;
  padding: 16px 18px;
  border-left: 4px solid var(--c-ember);
  background: var(--c-mist);
  font-size: 15px;
  line-height: 1.72;
  color: var(--c-text);
}

.page-contact .prep-note a {
  color: var(--c-dawn);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .prep-note a:hover {
  color: var(--c-ember);
}

/* ============ 响应节奏（深色带） ============ */
.page-contact .contact-hours {
  display: grid;
  gap: 34px;
}

.page-contact .contact-hours__kicker {
  display: inline-block;
  margin: 0 0 16px;
  padding-left: 10px;
  border-left: 4px solid var(--c-ember);
  font-size: 12.5px;
  letter-spacing: 0.16em;
  color: var(--c-mid);
}

.page-contact .contact-hours__title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.6rem, 3.6vw, 2.35rem);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--c-cloud);
  text-wrap: balance;
}

.page-contact .contact-hours__text {
  margin: 0;
  max-width: 56ch;
  font-size: 16px;
  line-height: 1.78;
  color: #B9CFDD;
}

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

.page-contact .hours-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 20px;
  padding: 16px 0;
  border-top: 2px solid var(--c-dawn);
}

.page-contact .hours-item:last-child {
  border-bottom: 2px solid var(--c-dawn);
}

.page-contact .hours-item__label {
  font-size: 12.5px;
  letter-spacing: 0.14em;
  color: var(--c-mid);
}

.page-contact .hours-item__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 15px;
  color: var(--c-cloud);
}

/* ============ 合作洽谈路径 ============ */
.page-contact .partner-grid {
  display: grid;
  gap: 36px;
  margin-top: clamp(30px, 5vw, 52px);
}

.page-contact .path-list {
  position: relative;
  margin: 0;
  padding: 0 0 0 40px;
  list-style: none;
  display: grid;
  gap: 16px;
}

.page-contact .path-list::before {
  content: "";
  position: absolute;
  left: 13px;
  top: 16px;
  bottom: 16px;
  width: 1px;
  background: linear-gradient(180deg, var(--c-dawn) 0%, var(--c-mid) 55%, var(--c-ember) 100%);
}

.page-contact .path-node {
  position: relative;
  border: var(--edge);
  background: var(--c-cloud);
  box-shadow: var(--lift-sm);
}

.page-contact .path-node::before {
  content: "";
  position: absolute;
  left: -33px;
  top: 21px;
  box-sizing: border-box;
  width: 11px;
  height: 11px;
  background: var(--c-cloud);
  border: 2px solid var(--c-line);
  transition: background 180ms var(--ease);
}

.page-contact .path-node[open]::before {
  background: var(--c-ember);
}

.page-contact .path-node__summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 15px 20px;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: -0.01em;
  color: var(--c-ink);
}

.page-contact .path-node__summary::-webkit-details-marker {
  display: none;
}

.page-contact .path-node__summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  line-height: 1;
  color: var(--c-ember);
}

.page-contact .path-node[open] .path-node__summary::after {
  content: "\2013";
}

.page-contact .path-node__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--c-dawn);
  letter-spacing: 0.04em;
}

.page-contact .path-node__body {
  margin: 0;
  padding: 0 20px 20px;
  font-size: 15px;
  line-height: 1.74;
  color: var(--c-text);
}

.page-contact .partner-grid__media {
  margin: 0;
  border: var(--edge);
  box-shadow: var(--lift);
  background: var(--c-mist);
  overflow: hidden;
}

.page-contact .partner-grid__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
}

/* ============ 地址 ============ */
.page-contact .addr-grid {
  display: grid;
  gap: 24px;
  margin-top: clamp(30px, 5vw, 52px);
}

.page-contact .addr-block {
  padding: 26px 22px;
  background: var(--c-cloud);
  border: var(--edge);
  box-shadow: var(--lift);
}

.page-contact .addr-block--muted {
  box-shadow: none;
  border-style: dashed;
  background: transparent;
}

.page-contact .addr-block__label {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--c-mute);
}

.page-contact .addr-block__line {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: clamp(1rem, 2.3vw, 1.22rem);
  line-height: 1.55;
  letter-spacing: -0.01em;
  color: var(--c-num);
}

.page-contact .addr-block__note {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--c-text);
}

.page-contact .addr-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .addr-list__item {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-text);
}

.page-contact .addr-list__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 9px;
  height: 2px;
  background: var(--c-ember);
}

/* ============ 准备清单 ============ */
.page-contact .checklist {
  display: grid;
  gap: 12px;
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .checklist__item {
  min-width: 0;
}

.page-contact .checklist__label {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 15px 16px 15px 14px;
  border: var(--edge);
  background: var(--c-cloud);
  cursor: pointer;
  overflow: hidden;
  transition: box-shadow 180ms var(--ease), transform 180ms var(--ease);
}

.page-contact .checklist__label::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 0;
  background: var(--c-ember);
  transition: width 180ms var(--ease);
}

.page-contact .checklist__label:has(.checklist__input:checked)::before {
  width: 6px;
}

.page-contact .checklist__label:hover {
  box-shadow: var(--lift-sm);
}

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

.page-contact .checklist__box {
  position: relative;
  display: block;
  width: 20px;
  height: 20px;
  margin-top: 2px;
  border: 2px solid var(--c-line);
  background: var(--c-cloud);
}

.page-contact .checklist__input:checked + .checklist__box {
  background: var(--c-dawn);
}

.page-contact .checklist__input:checked + .checklist__box::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 1px;
  width: 5px;
  height: 10px;
  border-right: 2px solid var(--c-cloud);
  border-bottom: 2px solid var(--c-cloud);
  transform: rotate(40deg);
}

.page-contact .checklist__input:focus-visible + .checklist__box {
  box-shadow: var(--cc-ring);
}

.page-contact .checklist__text {
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--c-text);
}

.page-contact .checklist__foot {
  margin: 26px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--c-mute);
}

.page-contact .checklist__foot a {
  color: var(--c-dawn);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .checklist__foot a:hover {
  color: var(--c-ember);
}

/* ============ 断点 ============ */
@media (min-width: 760px) {
  .page-contact .prep-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px 32px;
  }

  .page-contact .checklist {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px 24px;
  }
}

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

  .page-contact .contact-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px;
    align-items: start;
  }

  .page-contact .contact-card:nth-child(2) {
    margin-top: 32px;
  }

  .page-contact .contact-card:nth-child(3) {
    margin-top: 64px;
  }

  .page-contact .contact-hours {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-contact .addr-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    gap: 32px;
    align-items: start;
  }
}

@media (min-width: 980px) {
  .page-contact .partner-grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    gap: 56px;
    align-items: start;
  }

  .page-contact .partner-grid__media {
    position: sticky;
    top: 96px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-card,
  .page-contact .checklist__label,
  .page-contact .checklist__label::before,
  .page-contact .path-node::before {
    transition: none;
  }

  .page-contact .contact-card:hover,
  .page-contact .contact-card:focus-within {
    transform: none;
  }
}