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

/* ---------- 首屏 ---------- */
.page-contact .hero {
  max-width: var(--shell);
  margin: 0 auto;
  padding: calc(var(--head-h) + 28px) var(--gutter) 40px;
  display: grid;
  gap: 34px;
}

.page-contact .crumbs {
  margin: 0 0 22px;
}

.page-contact .crumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--mist);
  text-transform: uppercase;
}

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

.page-contact .crumbs__list a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--track), border-color var(--track);
}

.page-contact .crumbs__list a:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan-50);
}

.page-contact .heard-holder,
.page-contact .crumbs__list [aria-current="page"] {
  color: var(--cyan);
}

.page-contact h1 {
  margin: 12px 0 20px;
  font-size: clamp(34px, 8vw, 78px);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -0.035em;
  color: var(--ink);
}

.page-contact .hero__lede {
  max-width: 46ch;
  margin: 0 0 28px;
  font-size: 17px;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

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

.page-contact .hero__frame {
  aspect-ratio: 4 / 3;
}

.page-contact .hero__visual img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 先做一步提示 ---------- */
.page-contact .notice {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 12px var(--gutter) 8px;
}

.page-contact .notice__box {
  border: 1.5px solid var(--line);
  border-left: 4px solid var(--cyan);
  background: var(--hull);
  box-shadow: var(--hard);
  padding: 24px 22px 26px;
}

.page-contact .notice__title {
  margin: 10px 0 14px;
  font-size: clamp(22px, 4.4vw, 34px);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.025em;
  color: var(--ink);
}

.page-contact .notice p {
  max-width: 64ch;
  margin: 0 0 12px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .notice__more {
  margin: 6px 0 0;
}

.page-contact .notice__more a {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-30);
  padding-bottom: 2px;
  transition: border-color var(--track);
}

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

/* ---------- 联络 + 合作分屏 ---------- */
.page-contact .contact-split {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 56px var(--gutter) 64px;
  display: grid;
  gap: 48px;
}

.page-contact .contact-split__main .eyebrow,
.page-contact .contact-split__aside .eyebrow {
  display: block;
  margin: 0 0 14px;
}

.page-contact .channel {
  border-top: 1.5px solid var(--line);
  padding: 24px 0 28px;
}

.page-contact .channel:last-child {
  border-bottom: 1.5px solid var(--line);
}

.page-contact .channel__label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--mist);
  text-transform: uppercase;
}

.page-contact .channel__value {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -0.005em;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}

.page-contact .channel__value--mail {
  display: inline-block;
  max-width: 100%;
  padding-bottom: 5px;
  border-bottom: 2px solid var(--cyan);
  transition: border-color var(--track), color var(--track);
}

.page-contact .channel__value--mail:hover {
  border-bottom-color: var(--orange);
  color: var(--cyan);
}

.page-contact .channel__use {
  max-width: 50ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .coop__lede {
  max-width: 44ch;
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .coop__stack {
  display: block;
}

.page-contact .co-card {
  position: relative;
  border: 1.5px solid var(--line);
  background: var(--panel);
  box-shadow: var(--hard);
  transition: transform var(--track), box-shadow var(--track), border-color var(--track);
}

.page-contact .co-card:hover {
  transform: translateX(-4px);
  border-color: var(--cyan-30);
  box-shadow: 10px 10px 0 var(--orange-40);
}

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

.page-contact .co-card + .co-card::before {
  content: "";
  position: absolute;
  left: -1.5px;
  right: -1.5px;
  top: -11px;
  height: 1.5px;
  background: var(--line);
  transform: skewY(-1.2deg);
  transform-origin: left center;
  pointer-events: none;
}

.page-contact .co-card > summary {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 4px 12px;
  align-items: start;
  padding: 18px 20px 12px;
  cursor: pointer;
  list-style: none;
}

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

.page-contact .co-card[open] > summary {
  padding-bottom: 4px;
}

.page-contact .co-card__idx {
  padding-top: 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-contact .co-card__head {
  display: block;
}

.page-contact .co-card__name {
  margin: 0;
  font-size: 21px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.015em;
  color: var(--ink);
}

.page-contact .co-card__hint {
  display: block;
  margin-top: 5px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.page-contact .co-card__body {
  padding: 6px 20px 22px;
}

.page-contact .co-card__body p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .co-card__body ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .co-card__body li {
  position: relative;
  padding: 8px 0 8px 18px;
  border-top: 1px solid var(--line-60);
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
}

.page-contact .co-card__body li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 17px;
  width: 8px;
  height: 1.5px;
  background: var(--cyan);
}

.page-contact .coop__foot {
  margin: 22px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--cyan);
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 资料与信件投递 ---------- */
.page-contact .postal {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 var(--gutter) 20px;
}

.page-contact .postal__inner {
  border: 1.5px solid var(--line);
  background: var(--hull);
  box-shadow: var(--hard);
  overflow: hidden;
}

.page-contact .postal__bg {
  height: 160px;
  overflow: hidden;
  border-bottom: 1.5px solid var(--line);
}

.page-contact .postal__bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.55;
}

.page-contact .postal__content {
  padding: 26px 22px 32px;
}

.page-contact .postal__title {
  margin: 10px 0 18px;
  font-size: clamp(24px, 5vw, 40px);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.03em;
  color: var(--ink);
}

.page-contact .postal__addr {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: clamp(17px, 4.2vw, 26px);
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: 0.01em;
  color: var(--cyan);
  overflow-wrap: anywhere;
}

.page-contact .postal__text {
  max-width: 64ch;
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 备案与主体信息 ---------- */
.page-contact .meta {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 44px var(--gutter) 12px;
}

.page-contact .meta__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .meta__list {
  display: grid;
  gap: 0;
  margin: 0 0 16px;
  max-width: 52ch;
}

.page-contact .meta__list > div {
  display: grid;
  grid-template-columns: 84px 1fr;
  gap: 14px;
  align-items: baseline;
  padding: 11px 0;
  border-bottom: 1px solid var(--line-60);
}

.page-contact .meta__list dt {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-contact .meta__list dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}

.page-contact .meta__note {
  max-width: 72ch;
  margin: 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .meta__note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-30);
  transition: border-color var(--track);
}

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

/* ---------- 收束横幅 ---------- */
.page-contact .outro {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 40px var(--gutter) 96px;
}

.page-contact .outro__panel {
  position: relative;
  overflow: hidden;
  border: 1.5px solid var(--line);
  background: linear-gradient(135deg, var(--hull) 0%, var(--void) 72%);
  box-shadow: var(--hard);
  padding: 34px 22px 40px;
}

.page-contact .outro__panel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 132px;
  height: 4px;
  background: var(--cyan);
}

.page-contact .outro__title {
  margin: 12px 0 16px;
  font-size: clamp(26px, 5.6vw, 46px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.035em;
  color: var(--ink);
}

.page-contact .outro__text {
  max-width: 60ch;
  margin: 0 0 26px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 断点 ---------- */
@media (min-width: 520px) {
  .page-contact .channel__value {
    font-size: 24px;
  }

  .page-contact .co-card__body {
    padding: 6px 22px 24px 72px;
  }

  .page-contact .postal__bg {
    height: 200px;
  }

  .page-contact .postal__content {
    padding: 30px 28px 36px;
  }

  .page-contact .notice__box {
    padding: 28px 30px 30px;
  }
}

@media (min-width: 900px) {
  .page-contact .hero {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 56px;
    align-items: center;
    padding-bottom: 56px;
  }

  .page-contact .hero__frame {
    aspect-ratio: 3 / 4;
  }

  .page-contact .notice {
    padding-top: 24px;
  }

  .page-contact .contact-split {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    gap: 64px;
    padding-top: 72px;
    padding-bottom: 80px;
  }

  .page-contact .channel__value {
    font-size: 30px;
  }

  .page-contact .postal__bg {
    height: 240px;
  }

  .page-contact .postal__content {
    padding: 36px 40px 44px;
  }

  .page-contact .meta {
    padding-top: 56px;
  }

  .page-contact .outro {
    padding-bottom: 120px;
  }

  .page-contact .outro__panel {
    padding: 44px 48px 52px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .co-card,
  .page-contact .channel__value--mail,
  .page-contact .crumbs__list a,
  .page-contact .meta__note a,
  .page-contact .notice__more a {
    transition: none;
  }

  .page-contact .co-card:hover {
    transform: none;
  }
}
<<<END>>>