.page-contact {
  --pt-line-hi: rgba(88, 184, 232, .62);
  --pt-shadow: 0 30px 70px -30px rgba(10, 27, 42, .72);
  background: var(--snow);
  color: var(--ink);
}

.page-contact *,
.page-contact *::before,
.page-contact *::after {
  box-sizing: border-box;
}

.page-contact img {
  max-width: 100%;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--ice-night);
  padding: clamp(108px, 15vw, 164px) 0 clamp(52px, 7vw, 86px);
}

.page-contact .contact-hero__media {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.page-contact .contact-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .3;
  filter: saturate(.6) brightness(.72);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(110% 78% at 12% 0%, rgba(27, 111, 168, .42) 0%, rgba(10, 27, 42, 0) 62%),
    linear-gradient(180deg, rgba(10, 27, 42, .58) 0%, rgba(10, 27, 42, .92) 58%, var(--ice-night) 100%);
}

.page-contact .contact-hero__inner {
  position: relative;
}

.page-contact .contact-hero .breadcrumbs {
  font-size: var(--fs-sm);
  color: var(--mist);
}

.page-contact .contact-hero .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .contact-hero .breadcrumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(201, 214, 226, .48);
}

.page-contact .contact-hero .breadcrumbs a {
  color: var(--ice-bright);
  text-decoration: none;
}

.page-contact .contact-hero .breadcrumbs a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .contact-hero .eyebrow {
  margin: clamp(20px, 3vw, 30px) 0 14px;
  color: var(--orange-soft);
  letter-spacing: .16em;
}

.page-contact .contact-hero__title {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(38px, 8.4vw, 74px);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -.02em;
  color: var(--snow);
}

.page-contact .contact-hero__title span {
  display: block;
  color: var(--ice-bright);
}

.page-contact .contact-hero__lead {
  margin: 22px 0 0;
  max-width: 620px;
  font-size: var(--fs-body);
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 联系卡片 ---------- */
.page-contact .contact-card {
  position: relative;
  margin-top: clamp(34px, 5.5vw, 54px);
  display: grid;
  background: var(--glass-dark);
  backdrop-filter: blur(20px) saturate(1.2);
  -webkit-backdrop-filter: blur(20px) saturate(1.2);
  border: 1px solid var(--line-dark-strong);
  box-shadow: var(--pt-shadow);
  transition: border-color var(--t-mid) var(--ease);
}

.page-contact .contact-card::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 52px;
  height: 3px;
  background: var(--orange);
}

.page-contact .contact-card:hover,
.page-contact .contact-card:focus-within {
  border-color: var(--pt-line-hi);
}

.page-contact .contact-card__channel {
  padding: clamp(22px, 3.4vw, 34px);
}

.page-contact .contact-card__channel + .contact-card__channel {
  border-top: 1px solid var(--line-dark);
}

.page-contact .contact-card__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ice-bright);
}

.page-contact .contact-card__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(15px, 3.6vw, 22px);
  font-weight: 600;
  line-height: 1.36;
  letter-spacing: .01em;
  color: var(--snow);
  word-break: break-word;
  font-variant-numeric: tabular-nums;
}

.page-contact .contact-card__hint {
  margin: 14px 0 0;
  max-width: 460px;
  font-size: var(--fs-sm);
  line-height: 1.75;
  color: var(--mist);
}

@media (min-width: 800px) {
  .page-contact .contact-card {
    grid-template-columns: 1fr 1fr;
  }

  .page-contact .contact-card__channel + .contact-card__channel {
    border-top: 0;
    border-left: 1px solid var(--line-dark);
  }
}

/* ---------- 提问前准备 ---------- */
.page-contact .contact-prep {
  padding: clamp(64px, 8.5vw, 104px) 0;
  background: var(--snow);
}

.page-contact .contact-prep .eyebrow {
  margin: 0 0 10px;
  color: var(--ice-blue);
}

.page-contact .contact-prep h2 {
  margin: 0;
  font-family: var(--font-head);
  font-size: var(--fs-h2);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -.015em;
  color: var(--ink);
}

.page-contact .contact-prep__lead {
  margin: 18px 0 0;
  max-width: 720px;
  font-size: var(--fs-body);
  line-height: 1.78;
  color: var(--graphite);
}

.page-contact .contact-prep__lead a {
  color: var(--ice-blue);
  text-underline-offset: 3px;
}

.page-contact .tabs {
  margin-top: clamp(26px, 4vw, 42px);
}

.page-contact .tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line-light);
}

.page-contact .tab {
  appearance: none;
  -webkit-appearance: none;
  border: 1px solid var(--mist);
  background: transparent;
  border-radius: var(--pill);
  padding: 9px 16px;
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  line-height: 1.2;
  color: var(--graphite);
  cursor: pointer;
  white-space: nowrap;
  transition: background var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

.page-contact .tab:hover {
  border-color: var(--ice-bright);
  color: var(--ice-blue);
}

.page-contact .tab[aria-selected="true"] {
  background: var(--ice-blue);
  border-color: var(--ice-blue);
  color: var(--snow);
}

.page-contact .tab:focus-visible {
  outline: 2px solid var(--ice-bright);
  outline-offset: 2px;
}

.page-contact .tab-panel {
  margin-top: 26px;
  padding: clamp(20px, 3vw, 32px);
  background: #fff;
  border: 1px solid var(--line-light);
  border-left: 3px solid var(--ice-blue);
}

.page-contact .tab-panel[hidden] {
  display: none;
}

.page-contact .prep-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .prep-list li {
  position: relative;
  padding-left: 26px;
  font-size: var(--fs-body);
  line-height: 1.72;
  color: var(--ink);
}

.page-contact .prep-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 12px;
  height: 2px;
  background: var(--orange);
}

.page-contact .prep-note {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line-light);
  font-size: var(--fs-sm);
  line-height: 1.75;
  color: var(--graphite);
}

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

@media (min-width: 760px) {
  .page-contact .prep-list {
    grid-template-columns: 1fr 1fr;
    gap: 14px 32px;
  }
}

/* ---------- 回应节奏 ---------- */
.page-contact .contact-response {
  position: relative;
  overflow: hidden;
  padding: clamp(64px, 8.5vw, 104px) 0;
  background: var(--ice-night);
  color: var(--mist);
}

.page-contact .contact-response::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(90deg, rgba(201, 214, 226, .075) 0 1px, transparent 1px 44px);
  pointer-events: none;
}

.page-contact .contact-response__grid {
  position: relative;
  display: grid;
  gap: clamp(30px, 5vw, 56px);
}

.page-contact .contact-response .eyebrow {
  margin: 0 0 12px;
  color: var(--ice-bright);
}

.page-contact .contact-response h2 {
  margin: 0;
  font-family: var(--font-head);
  font-size: var(--fs-h2);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -.015em;
  color: var(--snow);
}

.page-contact .contact-response__intro p {
  margin: 18px 0 0;
  max-width: 480px;
  font-size: var(--fs-body);
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .response-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-dark);
}

.page-contact .response-list li {
  display: grid;
  gap: 7px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line-dark);
  font-size: var(--fs-body);
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .response-list__k {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--orange-soft);
}

.page-contact .response-num {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--score);
}

@media (min-width: 640px) {
  .page-contact .response-list li {
    grid-template-columns: 118px 1fr;
    gap: 24px;
    align-items: baseline;
  }
}

@media (min-width: 940px) {
  .page-contact .contact-response__grid {
    grid-template-columns: .82fr 1.18fr;
  }
}

/* ---------- 合作与授权 ---------- */
.page-contact .contact-coop {
  padding: clamp(64px, 8.5vw, 104px) 0;
  background: var(--snow);
}

.page-contact .contact-coop .eyebrow {
  margin: 0 0 10px;
  color: var(--ice-blue);
}

.page-contact .contact-coop h2 {
  margin: 0;
  font-family: var(--font-head);
  font-size: var(--fs-h2);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -.015em;
  color: var(--ink);
}

.page-contact .contact-coop__lead {
  margin: 18px 0 0;
  max-width: 720px;
  font-size: var(--fs-body);
  line-height: 1.78;
  color: var(--graphite);
}

.page-contact .contact-coop__lead a {
  color: var(--ice-blue);
  text-underline-offset: 3px;
}

.page-contact .coop-grid {
  margin-top: clamp(28px, 4vw, 44px);
  display: grid;
  gap: 14px;
}

.page-contact .coop-card {
  border: 1px solid var(--mist);
  background: #fff;
  transition: border-color var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}

.page-contact .coop-card:hover {
  border-color: var(--ice-bright);
  transform: translateY(-2px);
}

.page-contact .coop-card[open] {
  border-color: var(--ice-blue);
}

.page-contact .coop-card > summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
}

.page-contact .coop-card > summary::-webkit-details-marker {
  display: none;
}

.page-contact .coop-card > summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--ice-blue);
}

.page-contact .coop-card[open] > summary::after {
  content: "–";
}

.page-contact .coop-card > summary:focus-visible {
  outline: 2px solid var(--ice-bright);
  outline-offset: -2px;
}

.page-contact .coop-card__idx {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--orange);
}

.page-contact .coop-card__name {
  margin: 0;
  font-family: var(--font-head);
  font-size: var(--fs-h3);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-contact .coop-card__body {
  padding: 16px 20px 22px;
  border-top: 1px solid var(--line-light);
}

.page-contact .coop-card__body p {
  margin: 0;
  font-size: var(--fs-sm);
  line-height: 1.75;
  color: var(--graphite);
}

.page-contact .coop-card__body ul {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-contact .coop-card__body li {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.4;
  letter-spacing: .03em;
  color: var(--glacier);
  background: rgba(27, 111, 168, .08);
  border: 1px solid rgba(27, 111, 168, .22);
  padding: 5px 10px;
}

.page-contact .coop-figure {
  margin: clamp(28px, 4vw, 42px) 0 0;
}

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

.page-contact .coop-figure .figure-caption {
  margin-top: 12px;
  color: var(--graphite);
}

@media (min-width: 800px) {
  .page-contact .coop-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }
}

/* ---------- 服务地区与地址 ---------- */
.page-contact .contact-place {
  padding: clamp(64px, 8.5vw, 104px) 0;
  background: var(--ice-night);
  color: var(--mist);
}

.page-contact .contact-place__grid {
  display: grid;
  gap: clamp(30px, 5vw, 56px);
}

.page-contact .contact-place .eyebrow {
  margin: 0 0 12px;
  color: var(--ice-bright);
}

.page-contact .contact-place h2 {
  margin: 0;
  font-family: var(--font-head);
  font-size: var(--fs-h2);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -.015em;
  color: var(--snow);
}

.page-contact .contact-place__intro {
  margin: 18px 0 0;
  max-width: 520px;
  font-size: var(--fs-body);
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .place-facts {
  margin: 28px 0 0;
  padding: 0;
  border-top: 1px solid var(--line-dark);
}

.page-contact .place-facts > div {
  display: grid;
  gap: 6px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-dark);
}

.page-contact .place-facts dt {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ice-bright);
}

.page-contact .place-facts dd {
  margin: 0;
  font-size: var(--fs-body);
  line-height: 1.7;
  color: var(--snow);
}

.page-contact .place-facts__mono {
  font-family: var(--font-mono);
  letter-spacing: .03em;
}

.page-contact .place-graphic {
  position: relative;
  aspect-ratio: 4 / 3;
  border: 1px solid var(--line-dark);
  background:
    repeating-radial-gradient(circle at 48% 54%, rgba(88, 184, 232, .18) 0 1px, transparent 1px 24px),
    radial-gradient(circle at 48% 54%, rgba(27, 111, 168, .34) 0%, rgba(10, 27, 42, 0) 70%);
  overflow: hidden;
}

.page-contact .place-graphic::after {
  content: "";
  position: absolute;
  left: 48%;
  top: 54%;
  width: 10px;
  height: 10px;
  margin: -5px 0 0 -5px;
  background: var(--orange);
  box-shadow: 0 0 0 6px rgba(232, 112, 26, .18);
}

.page-contact .place-graphic__tick {
  position: absolute;
  left: 14px;
  bottom: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: rgba(201, 214, 226, .6);
}

@media (min-width: 620px) {
  .page-contact .place-facts > div {
    grid-template-columns: 120px 1fr;
    gap: 24px;
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-place__grid {
    grid-template-columns: 1.15fr .85fr;
    align-items: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .coop-card,
  .page-contact .contact-card,
  .page-contact .tab {
    transition: none;
  }

  .page-contact .coop-card:hover {
    transform: none;
  }
}