.page-contact {
  --contact-band: rgba(11, 29, 54, .72);
  --contact-radius: 2px;
  padding-bottom: clamp(2.5rem, 6vw, 4.5rem);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line-soft);
  background: var(--void);
}

.page-contact .contact-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.page-contact .contact-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: .34;
  display: block;
}

.page-contact .contact-hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(100deg, var(--void) 12%, rgba(6, 16, 31, .72) 52%, rgba(6, 16, 31, .92) 100%),
    radial-gradient(circle at 78% 18%, rgba(122, 92, 255, .38), transparent 58%);
}

.page-contact .contact-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
  padding-top: clamp(1.75rem, 5vw, 3.25rem);
  padding-bottom: clamp(2.25rem, 6vw, 4.5rem);
}

.page-contact .contact-hero__eyebrow {
  margin: 0 0 1rem;
  display: inline-block;
}

.page-contact .contact-hero__title {
  margin: 0;
  font-family: var(--font-condensed);
  font-weight: 900;
  font-size: clamp(2.15rem, 8.2vw, 3.9rem);
  line-height: 1.02;
  letter-spacing: -.02em;
  color: var(--paper);
  max-width: 15em;
}

.page-contact .contact-hero__lead {
  margin: 1.1rem 0 0;
  max-width: 34em;
  color: var(--muted);
  font-size: clamp(.95rem, 2.6vw, 1.0625rem);
  line-height: 1.8;
}

.page-contact .contact-hero__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem .6rem;
  margin: 1.4rem 0 0;
  padding-top: 1rem;
  border-top: 1px solid var(--line-soft);
  color: var(--muted);
  font-size: .8125rem;
  letter-spacing: .02em;
}

.page-contact .contact-hero__meta .data {
  color: var(--cyan);
}

.page-contact .contact-hero__meta-sep {
  color: var(--star);
}

.page-contact .contact-hero__cards {
  display: grid;
  gap: .85rem;
  align-content: start;
}

.page-contact .contact-card {
  position: relative;
  padding: 1rem 1.1rem 1.1rem;
  background: linear-gradient(160deg, rgba(29, 58, 92, .55), rgba(6, 16, 31, .88));
  border: 1px solid var(--line);
  border-radius: var(--contact-radius);
}

.page-contact .contact-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 34px;
  height: 2px;
  background: var(--star);
}

.page-contact .contact-card__kicker {
  margin: 0 0 .5rem;
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-contact .contact-card__value {
  margin: 0;
  color: var(--paper);
  font-size: .9375rem;
  line-height: 1.6;
}

.page-contact .contact-card__value.copy-field {
  margin: .1rem 0 .55rem;
}

.page-contact .contact-card__note {
  margin: 0;
  color: var(--muted);
  font-size: .8125rem;
  line-height: 1.65;
}

/* 可整段选取的字段 */
.page-contact .copy-field {
  font-family: var(--font-mono);
  font-size: .875rem;
  color: var(--paper);
  background: rgba(53, 240, 208, .07);
  border: 1px solid var(--line-soft);
  border-left: 2px solid var(--cyan);
  border-radius: var(--contact-radius);
  padding: .55rem .7rem;
  word-break: break-word;
  overflow-wrap: anywhere;
  user-select: all;
  -webkit-user-select: all;
  cursor: text;
}

.page-contact .copy-field.data {
  color: var(--amber);
}

.page-contact .contact-card .copy-field {
  background: rgba(6, 16, 31, .55);
}

/* ---------- 通用区块 ---------- */
.page-contact .contact-sec {
  padding: clamp(2.25rem, 6vw, 4rem) 0;
}

.page-contact .contact-sec--band {
  background: var(--contact-band);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .contact-sec--indigo {
  background: linear-gradient(180deg, rgba(59, 42, 120, .55), rgba(6, 16, 31, .2));
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .contact-sec__title {
  margin: .7rem 0 0;
  font-family: var(--font-condensed);
  font-weight: 800;
  font-size: clamp(1.5rem, 5vw, 2.15rem);
  line-height: 1.18;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-contact .contact-sec__note {
  margin: .75rem 0 0;
  max-width: 42em;
  color: var(--muted);
  font-size: .9375rem;
  line-height: 1.8;
}

/* ---------- 咨询分类 ---------- */
.page-contact .contact-cats {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.75rem);
}

.page-contact .contact-cats__media {
  margin-top: clamp(1.25rem, 3vw, 1.75rem);
}

.page-contact .contact-cats__media .media__img {
  width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
}

.page-contact .contact-cats__list {
  display: grid;
  gap: .6rem;
  min-width: 0;
}

.page-contact .contact-cat {
  --cat: var(--star);
  min-width: 0;
}

.page-contact .contact-cat--venue { --cat: var(--teal); }
.page-contact .contact-cat--list { --cat: var(--star); }
.page-contact .contact-cat--topic { --cat: var(--cyan); }
.page-contact .contact-cat--partner { --cat: var(--amber); }

.page-contact .contact-cat__trigger {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: .85rem;
  width: 100%;
  padding: .95rem 1rem;
  background: rgba(11, 29, 54, .78);
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--cat);
  border-radius: var(--contact-radius);
  color: var(--paper);
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: background .28s var(--ease), border-color .28s var(--ease);
}

.page-contact .contact-cat__trigger:hover,
.page-contact .contact-cat__trigger:focus-visible {
  background: rgba(29, 58, 92, .78);
  outline: none;
}

.page-contact .contact-cat__trigger:focus-visible {
  box-shadow: 0 0 0 2px rgba(53, 240, 208, .55);
}

.page-contact .contact-cat__num {
  font-size: .75rem;
  letter-spacing: .1em;
  color: var(--cat);
}

.page-contact .contact-cat__label {
  display: flex;
  flex-direction: column;
  gap: .18rem;
  min-width: 0;
}

.page-contact .contact-cat__title {
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.35;
  letter-spacing: .01em;
}

.page-contact .contact-cat__hint {
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .06em;
  color: var(--muted);
}

.page-contact .contact-cat__trigger .disclosure__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.4rem;
  height: 1.4rem;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: .9rem;
  line-height: 1;
  flex: none;
}

.page-contact .contact-cat__trigger .disclosure__icon::before {
  content: "+";
}

.page-contact .contact-cat__trigger[aria-expanded="true"] .disclosure__icon::before {
  content: "−";
}

.page-contact .contact-cat__trigger[aria-expanded="true"] {
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
  background: rgba(29, 58, 92, .8);
}

.page-contact .contact-cat__panel {
  padding: .95rem 1rem 1.1rem;
  background: rgba(6, 16, 31, .72);
  border: 1px solid var(--line-soft);
  border-top: 0;
  border-left: 3px solid var(--cat);
  border-radius: 0 0 var(--contact-radius) var(--contact-radius);
}

.page-contact .contact-cat__panel p {
  margin: 0;
  color: var(--muted);
  font-size: .9rem;
  line-height: 1.85;
}

.page-contact .contact-cat__list {
  margin: .8rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: .45rem;
}

.page-contact .contact-cat__list li {
  position: relative;
  padding-left: 1.1rem;
  color: var(--paper);
  font-size: .875rem;
  line-height: 1.7;
}

.page-contact .contact-cat__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 6px;
  height: 6px;
  background: var(--cat);
  transform: rotate(45deg);
}

/* ---------- 响应时段 ---------- */
.page-contact .contact-response {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
}

.page-contact .contact-response__clock {
  padding: 1.25rem 1.35rem;
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  background: linear-gradient(150deg, rgba(14, 74, 74, .58), rgba(6, 16, 31, .85));
  border-radius: var(--contact-radius);
  align-self: start;
}

.page-contact .contact-response__time {
  margin: .8rem 0 .35rem;
  font-size: clamp(1.9rem, 7vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--amber);
  line-height: 1;
}

.page-contact .contact-response__sub {
  margin: 0;
  color: var(--muted);
  font-size: .8125rem;
  line-height: 1.7;
}

.page-contact .contact-response__list {
  margin: 1.1rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: .85rem;
}

.page-contact .contact-response__list li {
  position: relative;
  padding-left: 1.35rem;
  color: var(--muted);
  font-size: .9375rem;
  line-height: 1.8;
  border-bottom: 1px solid rgba(29, 58, 92, .45);
  padding-bottom: .85rem;
}

.page-contact .contact-response__list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-contact .contact-response__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: .55rem;
  height: .55rem;
  border: 1px solid var(--cyan);
  border-radius: 50%;
}

.page-contact .contact-peak {
  margin: 1.25rem 0 0;
  padding: .85rem 1rem;
  background: rgba(255, 157, 66, .1);
  border-left: 3px solid var(--amber);
  border-radius: var(--contact-radius);
  color: var(--paper);
  font-size: .875rem;
  line-height: 1.75;
}

/* ---------- 来函清单 ---------- */
.page-contact .contact-checklist {
  margin: clamp(1.25rem, 3vw, 1.75rem) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
  counter-reset: none;
}

.page-contact .contact-checklist li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .85rem;
  align-items: baseline;
  padding: .95rem 0;
  border-top: 1px solid rgba(29, 58, 92, .7);
}

.page-contact .contact-checklist li:last-child {
  border-bottom: 1px solid rgba(29, 58, 92, .7);
}

.page-contact .contact-checklist__num {
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .08em;
  color: var(--star);
}

.page-contact .contact-checklist__text {
  color: var(--paper);
  font-size: .9375rem;
  line-height: 1.75;
}

/* ---------- 写信模板 ---------- */
.page-contact .contact-draft {
  display: grid;
  gap: clamp(1.25rem, 3vw, 2rem);
}

.page-contact .contact-draft__body {
  display: grid;
  gap: .35rem;
  padding: clamp(1rem, 3vw, 1.5rem);
  border: 1px dashed var(--line);
  border-radius: var(--contact-radius);
  background: rgba(11, 29, 54, .55);
  min-width: 0;
}

.page-contact .contact-draft__label {
  margin: .6rem 0 0;
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-contact .contact-draft__label:first-child {
  margin-top: 0;
}

.page-contact .contact-draft__body .copy-field {
  margin: .35rem 0 0;
  line-height: 1.75;
}

/* ---------- 下一步 ---------- */
.page-contact .contact-next {
  display: grid;
  gap: .75rem;
  margin-top: clamp(1.25rem, 3vw, 1.75rem);
}

.page-contact .contact-next__card {
  display: grid;
  gap: .35rem;
  padding: 1rem 1.1rem 1.15rem;
  background: rgba(11, 29, 54, .7);
  border: 1px solid var(--line);
  border-top: 2px solid var(--star);
  border-radius: var(--contact-radius);
  text-decoration: none;
  transition: border-color .25s var(--ease), background .25s var(--ease), transform .25s var(--ease);
}

.page-contact .contact-next__card:hover,
.page-contact .contact-next__card:focus-visible {
  background: rgba(29, 58, 92, .78);
  border-top-color: var(--cyan);
  transform: translateY(-2px);
  outline: none;
}

.page-contact .contact-next__num {
  font-size: .6875rem;
  letter-spacing: .12em;
  color: var(--cyan);
}

.page-contact .contact-next__name {
  font-family: var(--font-condensed);
  font-weight: 800;
  font-size: 1.125rem;
  letter-spacing: .01em;
  color: var(--paper);
}

.page-contact .contact-next__desc {
  color: var(--muted);
  font-size: .8125rem;
  line-height: 1.7;
}

.page-contact .contact-next__back {
  margin: 1.5rem 0 0;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-contact .contact-hero__cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .contact-card--wide {
    grid-column: 1 / -1;
  }

  .page-contact .contact-checklist {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(1.25rem, 3vw, 2.25rem);
  }

  .page-contact .contact-next {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__inner {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    align-items: start;
  }

  .page-contact .contact-hero__cards {
    margin-top: 1.75rem;
    padding-left: .5rem;
    border-left: 1px solid var(--line-soft);
  }

  .page-contact .contact-cats {
    grid-template-columns: minmax(0, .68fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-contact .contact-cats__intro {
    position: sticky;
    top: 6rem;
  }

  .page-contact .contact-response {
    grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr);
  }

  .page-contact .contact-draft {
    grid-template-columns: minmax(0, .78fr) minmax(0, 1.22fr);
    align-items: start;
  }

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

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

  .page-contact .contact-next__card:hover,
  .page-contact .contact-next__card:focus-visible {
    transform: none;
  }
}
<<<END>>>