.page-contact {
  background: var(--ink-950);
  color: var(--fog);
}

.page-contact h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 4vw, 42px);
  line-height: 1.14;
  letter-spacing: -0.015em;
  margin: 0 0 16px;
  text-wrap: balance;
}

.page-contact .eyebrow {
  color: var(--cyan);
  margin-bottom: 14px;
}

/* ---------- Hero ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: calc(var(--header-h) + 36px) 0 64px;
  overflow: hidden;
  background:
    radial-gradient(860px 460px at 90% -10%, var(--cyan-16), transparent 68%),
    radial-gradient(720px 400px at 2% 8%, var(--orange-10), transparent 72%),
    var(--ink-950);
}

.page-contact .breadcrumb {
  font-family: var(--font-label);
  font-size: 13px;
  letter-spacing: 0.05em;
  margin-bottom: 26px;
}

.page-contact .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .breadcrumb a {
  color: var(--steel);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

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

.page-contact .breadcrumb li + li::before {
  content: "/";
  color: var(--ink-700);
  margin-right: 8px;
}

.page-contact .breadcrumb li[aria-current="page"] {
  color: var(--fog);
}

.page-contact .contact-hero__grid {
  display: grid;
  gap: 44px;
  align-items: center;
}

.page-contact .contact-hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(36px, 8.2vw, 82px);
  line-height: 1.02;
  letter-spacing: -0.025em;
  margin: 0 0 22px;
  text-wrap: balance;
}

.page-contact .contact-hero h1 em {
  font-style: normal;
  color: var(--cyan);
  display: block;
}

.page-contact .contact-hero__text {
  max-width: 34em;
  margin: 0;
  font-size: 16.5px;
  line-height: 1.8;
  color: var(--steel);
}

.page-contact .contact-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin-top: 28px;
}

.page-contact .contact-hero__meta-item {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-label);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--steel);
}

.page-contact .contact-hero__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px var(--cyan-08);
  flex: none;
}

.page-contact .contact-hero__dot--orange {
  background: var(--orange);
  box-shadow: 0 0 0 4px var(--orange-10);
}

.page-contact .contact-hero__media {
  position: relative;
  margin: 0;
}

.page-contact .contact-hero__media::before {
  content: "";
  position: absolute;
  inset: 16px 10px 8px 16px;
  background: linear-gradient(140deg, rgba(43, 224, 230, 0.24), rgba(255, 122, 24, 0.16));
  clip-path: polygon(0 0, 100% 5%, 100% 100%, 0 95%);
  z-index: 0;
}

.page-contact .contact-hero__media img {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 2px solid var(--ink-700);
  box-shadow: var(--shadow-deep);
}

/* ---------- 主体双栏 ---------- */
.page-contact .contact-main {
  padding: 56px 0 72px;
  border-top: 2px solid var(--ink-700);
}

.page-contact .contact-layout {
  display: grid;
  gap: 56px;
}

.page-contact .contact-channels__lede,
.page-contact .contact-checklist__lede {
  margin: 0 0 26px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--steel);
  max-width: 32em;
}

.page-contact .contact-card {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 18px;
  padding: 22px 20px;
  background: var(--ink-800);
  border: 2px solid var(--ink-700);
  box-shadow: var(--shadow-hard);
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-contact .contact-card + .contact-card {
  margin-top: 18px;
}

.page-contact .contact-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-deep);
  border-color: var(--ink-700);
}

.page-contact .contact-card__icon {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 2px solid var(--cyan);
  background: var(--cyan-08);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  flex: none;
}

.page-contact .contact-card--call .contact-card__icon {
  border-color: var(--orange);
  background: var(--orange-10);
  color: var(--orange);
}

.page-contact .contact-card--addr .contact-card__icon {
  border-color: var(--grass);
  background: rgba(69, 212, 131, 0.1);
  color: var(--grass);
}

.page-contact .contact-card__label {
  margin: 0 0 8px;
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--steel);
}

.page-contact .contact-card__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(16px, 2.4vw, 21px);
  font-weight: 600;
  line-height: 1.45;
  color: var(--fog);
  overflow-wrap: anywhere;
}

.page-contact .contact-card__note {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--steel);
}

/* ---------- 清单 ---------- */
.page-contact .checklist {
  list-style: none;
  margin: 0;
  padding: 8px 20px;
  background: var(--ink-900);
  border: 2px solid var(--ink-700);
  box-shadow: var(--shadow-hard);
}

.page-contact .checklist__item {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-top: 1px solid var(--ink-700);
}

.page-contact .checklist__item:first-child {
  border-top: 0;
}

.page-contact .checklist__box {
  appearance: none;
  -webkit-appearance: none;
  width: 22px;
  height: 22px;
  margin: 3px 0 0;
  border: 2px solid var(--ink-700);
  border-radius: var(--radius);
  background: var(--ink-950);
  position: relative;
  cursor: pointer;
  flex: none;
  transition: background 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-contact .checklist__box:hover {
  border-color: var(--cyan);
}

.page-contact .checklist__box:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-contact .checklist__box:checked {
  background: var(--grass);
  border-color: var(--grass);
}

.page-contact .checklist__box:checked::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 0;
  width: 7px;
  height: 12px;
  border-right: 2px solid var(--ink-950);
  border-bottom: 2px solid var(--ink-950);
  transform: rotate(42deg);
}

.page-contact .checklist__copy {
  display: block;
  cursor: pointer;
}

.page-contact .checklist__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
  margin-bottom: 5px;
}

.page-contact .checklist__title {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  letter-spacing: -0.01em;
  color: var(--fog);
  margin-bottom: 7px;
  transition: color 0.18s var(--ease);
}

.page-contact .checklist__box:checked ~ .checklist__copy .checklist__title {
  color: var(--grass);
}

.page-contact .checklist__desc {
  display: block;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--steel);
}

.page-contact .contact-flow {
  margin: 28px 0 0;
}

.page-contact .contact-flow img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
  border: 2px solid var(--ink-700);
  background: var(--ink-900);
}

.page-contact .contact-flow figcaption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--steel);
  padding-left: 12px;
  border-left: 2px solid var(--orange);
}

/* ---------- 响应说明 ---------- */
.page-contact .contact-response {
  padding: 60px 0;
  background: var(--ink-900);
  border-top: 2px solid var(--ink-700);
  border-bottom: 2px solid var(--ink-700);
}

.page-contact .contact-response__head {
  margin-bottom: 34px;
}

.page-contact .response-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 26px;
}

.page-contact .response-steps > li {
  padding-left: 20px;
  border-left: 2px solid var(--ink-700);
}

.page-contact .response-steps > li:first-child {
  border-left-color: var(--orange);
  border-left-width: 4px;
}

.page-contact .response-steps__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--orange);
  margin-bottom: 10px;
}

.page-contact .response-steps h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  color: var(--fog);
}

.page-contact .response-steps p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--steel);
}

.page-contact .contact-response__aside {
  margin: 32px 0 0;
  padding-top: 20px;
  border-top: 1px dashed var(--ink-700);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--steel);
}

/* ---------- 合作 ---------- */
.page-contact .contact-collab {
  padding: 64px 0;
}

.page-contact .contact-collab__grid {
  display: grid;
  gap: 40px;
  align-items: start;
}

.page-contact .contact-collab__lede p {
  margin: 0 0 14px;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--steel);
  max-width: 34em;
}

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

.page-contact .collab-list li {
  padding: 20px 22px;
  background: var(--ink-800);
  border: 2px solid var(--ink-700);
  border-left: 5px solid var(--cyan);
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.page-contact .collab-list li:nth-child(2) {
  border-left-color: var(--orange);
}

.page-contact .collab-list li:nth-child(3) {
  border-left-color: var(--grass);
}

.page-contact .collab-list li:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hard);
}

.page-contact .collab-list h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  color: var(--fog);
}

.page-contact .collab-list p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--steel);
}

/* ---------- 地址条 ---------- */
.page-contact .contact-address {
  padding: 40px 0 88px;
  overflow: hidden;
}

.page-contact .contact-address__title {
  font-size: clamp(22px, 3vw, 30px);
  margin-bottom: 22px;
}

.page-contact .address-bar {
  position: relative;
  display: grid;
  gap: 22px;
  padding: 42px 26px 48px;
  background: linear-gradient(96deg, var(--ink-800) 0%, var(--ink-900) 74%);
  clip-path: polygon(0 16px, 100% 0, 100% calc(100% - 16px), 0 100%);
}

.page-contact .address-bar::after {
  content: "";
  position: absolute;
  left: 0;
  top: 26px;
  bottom: 26px;
  width: 4px;
  background: linear-gradient(var(--cyan), var(--orange));
}

.page-contact .address-bar__label {
  margin: 0 0 8px;
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--steel);
}

.page-contact .address-bar__text {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(15px, 2.2vw, 19px);
  line-height: 1.6;
  color: var(--fog);
  overflow-wrap: anywhere;
}

.page-contact .address-bar__icp {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(14px, 2vw, 17px);
  letter-spacing: 0.04em;
  line-height: 1.6;
  color: var(--gold);
  overflow-wrap: anywhere;
}

.page-contact .contact-address__note {
  margin: 24px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--steel);
}

.page-contact a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-16);
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease);
}

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

.page-contact a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .contact-card {
    grid-template-columns: 62px minmax(0, 1fr);
    gap: 22px;
    padding: 26px 26px;
  }

  .page-contact .contact-card__icon {
    width: 62px;
    height: 62px;
    font-size: 15px;
  }

  .page-contact .checklist {
    padding: 10px 28px;
  }

  .page-contact .address-bar {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: center;
    gap: 28px;
    padding: 44px 40px 52px;
  }
}

@media (min-width: 860px) {
  .page-contact .contact-hero {
    padding: calc(var(--header-h) + 56px) 0 88px;
  }

  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    gap: 60px;
    align-items: center;
  }

  .page-contact .response-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
  }

  .page-contact .response-steps > li {
    padding: 0 26px;
    border-left: 2px solid var(--ink-700);
  }

  .page-contact .response-steps > li:first-child {
    padding-left: 26px;
    border-left-width: 4px;
  }

  .page-contact .contact-collab__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    gap: 56px;
  }
}

@media (min-width: 1040px) {
  .page-contact .contact-main {
    padding: 72px 0 92px;
  }

  .page-contact .contact-layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 72px;
    align-items: start;
  }

  .page-contact .contact-channels {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-card,
  .page-contact .collab-list li,
  .page-contact .contact-card__icon,
  .page-contact .checklist__title,
  .page-contact .breadcrumb a,
  .page-contact a {
    transition: none;
  }

  .page-contact .contact-card:hover,
  .page-contact .collab-list li:hover {
    transform: none;
  }
}