.page-contact {
  --contact-section-gap: 76px;
  color: var(--text);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding-top: 24px;
  overflow: hidden;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  top: -180px;
  right: -22%;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(42, 240, 196, .16) 0%, rgba(42, 240, 196, 0) 68%);
  pointer-events: none;
}

.page-contact .contact-hero .breadcrumb {
  position: relative;
  z-index: 1;
  margin-bottom: 26px;
}

.page-contact .contact-hero__title {
  position: relative;
  z-index: 1;
  margin: 14px 0 18px;
  max-width: 18ch;
  font-family: var(--font-display);
  font-size: clamp(30px, 8vw, 60px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: .03em;
  color: var(--text);
}

.page-contact .contact-hero__title::after {
  content: "";
  display: block;
  width: 64px;
  height: 3px;
  margin-top: 20px;
  background: var(--cyan);
}

.page-contact .contact-hero__lede {
  position: relative;
  z-index: 1;
  max-width: 58ch;
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.75;
}

.page-contact .contact-hero__band {
  position: relative;
  margin: 36px 0 0;
  border-top: 1px solid var(--line-strong);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 calc(100% - 24px));
}

.page-contact .contact-hero__band img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(.6) brightness(.68) contrast(1.08);
}

/* ---------- 联络台双栏 ---------- */
.page-contact .contact-desk {
  padding: 56px 0 0;
}

.page-contact .contact-desk__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 44px;
}

/* ---------- 联络卡 ---------- */
.page-contact .contact-card {
  position: relative;
  margin: 0;
  padding: 24px 20px 18px;
  background: var(--layer);
  border: 1px solid var(--line-strong);
  box-shadow: 8px 8px 0 var(--moss);
}

.page-contact .contact-card::after {
  content: "";
  position: absolute;
  inset: 7px -7px -7px 7px;
  border: 1px solid var(--line);
  pointer-events: none;
  z-index: 0;
}

.page-contact .contact-card > * {
  position: relative;
  z-index: 1;
}

.page-contact .contact-card__label {
  display: block;
  margin-bottom: 10px;
  color: var(--cyan);
}

.page-contact .contact-card__title {
  margin: 0 0 4px;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--text);
}

.page-contact .contact-card__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .contact-card__row {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.page-contact .contact-card__row:first-child {
  border-top: none;
  padding-top: 8px;
}

.page-contact .contact-card__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--muted);
}

.page-contact .contact-card__val {
  font-family: var(--font-mono);
  font-size: clamp(15px, 4.2vw, 19px);
  line-height: 1.35;
  color: var(--cyan);
  text-decoration: none;
  overflow-wrap: anywhere;
  transition: color .2s var(--ease);
}

.page-contact .contact-card__val:hover,
.page-contact .contact-card__val:focus-visible {
  color: var(--cyan-soft);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.page-contact .contact-card__val--plain {
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  line-height: 1.6;
}

.page-contact .contact-card__hint {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--muted);
}

.page-contact .contact-card__figure {
  margin: 16px 0 0;
  overflow: hidden;
  border: 1px solid var(--line);
}

.page-contact .contact-card__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: saturate(.7) brightness(.9);
}

.page-contact .contact-card__icp {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--muted);
  text-align: right;
}

/* ---------- 右栏正文 ---------- */
.page-contact .contact-body__section + .contact-body__section {
  margin-top: var(--contact-section-gap);
}

.page-contact .contact-body__head {
  margin-bottom: 26px;
  max-width: 62ch;
}

.page-contact .contact-body__head .label {
  display: block;
  margin-bottom: 10px;
  color: var(--cyan);
}

.page-contact .contact-body__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(22px, 5.6vw, 34px);
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: .04em;
  color: var(--text);
}

.page-contact .contact-body__lede {
  margin: 0;
  max-width: 60ch;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.75;
}

/* ---------- 三类合作方向 ---------- */
.page-contact .track-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-contact .track {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px 18px 22px;
  background: var(--deep);
  border: 1px solid var(--line);
  border-left: 3px solid var(--line-strong);
  transition: transform .24s var(--ease), border-color .24s var(--ease);
}

.page-contact .track:hover {
  transform: translateY(-3px);
}

.page-contact .track--cyan { border-left-color: var(--cyan); }
.page-contact .track--purple { border-left-color: var(--purple); }
.page-contact .track--orange { border-left-color: var(--orange); }

.page-contact .track__tag {
  align-self: flex-start;
  padding: 3px 10px;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: .1em;
  border: 1px solid currentColor;
}

.page-contact .track--cyan .track__tag { color: var(--cyan); }
.page-contact .track--purple .track__tag { color: var(--purple); }
.page-contact .track--orange .track__tag { color: var(--orange); }

.page-contact .track__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.38;
  letter-spacing: .03em;
  color: var(--text);
}

.page-contact .track__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

.page-contact .track__sub {
  margin: 4px 0 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--cyan-soft);
}

.page-contact .track__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 6px;
}

.page-contact .track__list li {
  position: relative;
  padding-left: 16px;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--text);
}

.page-contact .track__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 6px;
  height: 6px;
  border: 1px solid var(--cyan);
  transform: rotate(45deg);
}

.page-contact .track__foot {
  margin: 6px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .track__foot a,
.page-contact .prep-list__text a,
.page-contact .faq-stack .fold__body a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .track__foot a:hover,
.page-contact .prep-list__text a:hover,
.page-contact .faq-stack .fold__body a:hover {
  color: var(--cyan-soft);
}

/* ---------- 材料准备 ---------- */
.page-contact .prep-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .prep-list__item {
  display: grid;
  gap: 6px;
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

.page-contact .prep-list__item:last-child {
  border-bottom: 1px solid var(--line);
}

.page-contact .prep-list__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .2em;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-contact .prep-list__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--text);
}

.page-contact .prep-list__text {
  margin: 0;
  max-width: 60ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 回复时效斜切带 ---------- */
.page-contact .reply-band {
  margin-top: 4px;
  padding: 4px;
  background: var(--moss);
  clip-path: polygon(0 0, 100% 2.4%, 100% 100%, 0 97.6%);
}

.page-contact .reply-band__inner {
  display: grid;
  gap: 16px;
  padding: 34px 20px 30px;
  background: linear-gradient(140deg, var(--layer) 0%, var(--deep) 74%);
}

.page-contact .reply-band .label {
  display: block;
  color: var(--orange);
}

.page-contact .reply-band .contact-body__title {
  margin: 0;
}

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

.page-contact .reply-band__row {
  display: grid;
  gap: 5px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.page-contact .reply-band__time {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .03em;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

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

/* ---------- 常见两问 ---------- */
.page-contact .faq-stack {
  display: grid;
  gap: 10px;
}

.page-contact .faq-stack .fold {
  border: 1px solid var(--line);
  background: var(--deep);
}

/* ---------- 窄屏到宽屏 ---------- */
@media (min-width: 640px) {
  .page-contact .contact-hero__band img {
    aspect-ratio: 2 / 1;
  }

  .page-contact .reply-band__row {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }
}

@media (min-width: 780px) {
  .page-contact .track-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .track--cyan {
    grid-column: 1 / -1;
  }

  .page-contact .prep-list__item {
    grid-template-columns: 64px minmax(0, 1fr);
    column-gap: 20px;
    align-items: baseline;
  }

  .page-contact .prep-list__num {
    grid-row: 1 / span 2;
    font-size: 20px;
  }
}

@media (min-width: 960px) {
  .page-contact .contact-hero {
    padding-top: 36px;
  }

  .page-contact .contact-hero__band img {
    aspect-ratio: 16 / 5;
  }

  .page-contact .contact-desk {
    padding-top: 68px;
  }

  .page-contact .contact-desk__grid {
    grid-template-columns: 320px minmax(0, 1fr);
    gap: 64px;
    align-items: start;
  }

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

  .page-contact .reply-band__inner {
    padding: 42px 34px 38px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .track {
    transition: none;
  }

  .page-contact .track:hover {
    transform: none;
  }
}

@media print {
  .page-contact .contact-hero::before,
  .page-contact .contact-card::after {
    display: none;
  }

  .page-contact .contact-card,
  .page-contact .track,
  .page-contact .reply-band__inner,
  .page-contact .faq-stack .fold {
    background: var(--paper);
    color: var(--paper-ink);
    border-color: rgba(11, 31, 25, .25);
    box-shadow: none;
  }

  .page-contact .contact-card {
    position: static;
  }
}