.page-contact {
  display: block;
  padding-bottom: clamp(3rem, 7vw, 5.5rem);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: -28% -20% -8% -32%;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(38% 42% at 26% 30%, rgba(168, 85, 247, 0.24), transparent 68%),
    radial-gradient(34% 38% at 78% 16%, rgba(34, 211, 238, 0.15), transparent 70%),
    radial-gradient(30% 34% at 58% 84%, rgba(59, 130, 246, 0.14), transparent 72%);
}

.page-contact .contact-hero__grid {
  display: grid;
  gap: clamp(1.4rem, 5vw, 2.6rem);
  margin-top: clamp(1.2rem, 3.4vw, 2rem);
  align-items: center;
}

.page-contact .contact-hero__copy .lede {
  margin-top: 0.9rem;
  max-width: 48ch;
}

.page-contact .contact-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.3rem;
}

.page-contact .contact-hero__media {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--panel);
  filter: drop-shadow(0 22px 54px rgba(168, 85, 247, 0.14));
}

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

/* ---------- 非对称双栏 ---------- */
.page-contact .contact-asym {
  display: grid;
  gap: clamp(1.2rem, 3.4vw, 2.2rem);
}

.page-contact .contact-asym__aside,
.page-contact .contact-asym__main {
  display: grid;
  gap: clamp(1rem, 2.6vw, 1.5rem);
  align-content: start;
  min-width: 0;
}

/* ---------- 联系方式卡片 ---------- */
.page-contact .contact-block {
  position: relative;
  overflow: hidden;
  padding: clamp(1.15rem, 3vw, 1.75rem);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(155deg, rgba(14, 17, 26, 0.95) 0%, rgba(19, 24, 38, 0.72) 100%);
}

.page-contact .contact-block::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--grad);
}

.page-contact .contact-block--flat {
  background: rgba(14, 17, 26, 0.55);
}

.page-contact .contact-block--flat::before {
  background: linear-gradient(180deg, var(--cyan), var(--blue));
}

.page-contact .section-title--sm {
  font-size: clamp(1.15rem, 2.6vw, 1.5rem);
  margin: 0.4rem 0 0.6rem;
  line-height: 1.3;
}

.page-contact .contact-line {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.75rem;
  align-items: center;
  margin-top: 0.75rem;
  padding: 0.8rem 0.9rem;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: rgba(5, 6, 10, 0.55);
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.page-contact .contact-line:hover,
.page-contact .contact-line:focus-within {
  border-color: rgba(168, 85, 247, 0.5);
  box-shadow: 0 0 0 1px rgba(168, 85, 247, 0.12), 0 10px 28px rgba(168, 85, 247, 0.1);
}

.page-contact .contact-line__text {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  min-width: 0;
}

.page-contact .contact-line__label {
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-contact .contact-line__value {
  font-family: var(--font-mono);
  font-size: clamp(0.9rem, 2.7vw, 1.02rem);
  line-height: 1.4;
  color: var(--white);
  word-break: break-all;
}

.page-contact .copy-btn {
  flex: none;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.page-contact .contact-topics__title {
  margin: 1.25rem 0 0;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-contact .contact-topics {
  list-style: none;
  margin: 0.7rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

.page-contact .contact-topics li {
  position: relative;
  padding-left: 1.35rem;
  font-size: 0.94rem;
  line-height: 1.65;
  color: var(--muted);
}

.page-contact .contact-topics li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 0.6rem;
  height: 2px;
  border-radius: 2px;
  background: var(--grad);
}

.page-contact .contact-address {
  margin: 0.2rem 0 0.7rem;
  font-size: clamp(0.98rem, 2.6vw, 1.08rem);
  line-height: 1.7;
  color: var(--white);
  letter-spacing: 0.01em;
}

/* ---------- 右侧说明面板 ---------- */
.page-contact .contact-feature {
  padding: clamp(1.2rem, 3.2vw, 2rem);
}

.page-contact .contact-feature .prose {
  margin-top: 0.85rem;
  max-width: 62ch;
}

.page-contact .contact-feature .prose + .prose {
  margin-top: 0.75rem;
}

.page-contact .prose a,
.page-contact .muted a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 211, 238, 0.4);
  transition: border-color 0.2s ease;
}

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

.page-contact .contact-feature strong {
  color: var(--white);
  font-weight: 600;
  letter-spacing: 0.01em;
}

.page-contact .contact-biz__media {
  margin: 1.5rem 0 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--panel-2);
}

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

/* ---------- 折叠说明 ---------- */
.page-contact .fold-group {
  display: grid;
  gap: 0.6rem;
  margin-top: 1.25rem;
}

.page-contact .fold {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(5, 6, 10, 0.45);
  transition: border-color 0.25s ease, background 0.25s ease;
}

.page-contact .fold[open] {
  border-color: rgba(168, 85, 247, 0.45);
  background: rgba(14, 17, 26, 0.82);
}

.page-contact .fold summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1rem;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--white);
}

.page-contact .fold summary::-webkit-details-marker {
  display: none;
}

.page-contact .fold summary::marker {
  content: "";
}

.page-contact .fold summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  line-height: 1;
  color: var(--cyan);
}

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

.page-contact .fold p {
  margin: 0;
  padding: 0 1rem 1rem;
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 回复时间 ---------- */
.page-contact .contact-response__grid {
  display: grid;
  gap: clamp(1rem, 2.6vw, 1.4rem);
  margin-top: clamp(1.4rem, 3.4vw, 2rem);
}

.page-contact .reply-card {
  position: relative;
  overflow: hidden;
  padding: clamp(1.1rem, 3vw, 1.55rem);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(165deg, rgba(19, 24, 38, 0.86), rgba(14, 17, 26, 0.6));
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.page-contact .reply-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: var(--grad);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.page-contact .reply-card:hover {
  transform: translateY(-4px);
  border-color: rgba(59, 130, 246, 0.45);
  box-shadow: 0 18px 44px rgba(5, 6, 10, 0.55);
}

.page-contact .reply-card:hover::before {
  opacity: 1;
}

.page-contact .reply-card__index {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--neon);
}

.page-contact .reply-card__title {
  margin: 0.6rem 0 0;
  font-family: var(--font-display);
  font-size: 1.12rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--white);
}

.page-contact .reply-card__time {
  margin: 0.55rem 0 0;
  display: inline-block;
  padding: 0.24rem 0.6rem;
  border-radius: 999px;
  border: 1px solid rgba(249, 115, 22, 0.42);
  background: rgba(249, 115, 22, 0.1);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--orange);
}

.page-contact .reply-card__text {
  margin: 0.85rem 0 0;
  font-size: 0.94rem;
  line-height: 1.72;
  color: var(--muted);
}

/* ---------- 尾声引导 ---------- */
.page-contact .contact-next__inner {
  display: grid;
  gap: clamp(1.1rem, 3vw, 1.8rem);
  padding: clamp(1.2rem, 3.4vw, 2.1rem);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background:
    linear-gradient(120deg, rgba(168, 85, 247, 0.12), rgba(34, 211, 238, 0.07) 70%),
    rgba(14, 17, 26, 0.78);
}

.page-contact .contact-next__copy .section-title--sm {
  margin: 0.4rem 0 0.6rem;
}

.page-contact .contact-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  align-content: start;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-contact .contact-response__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .contact-next__inner {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: center;
  }

  .page-contact .contact-next__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  }

  .page-contact .contact-asym {
    grid-template-columns: minmax(0, 0.94fr) minmax(0, 1.28fr);
    gap: clamp(1.6rem, 4vw, 3rem);
    align-items: start;
  }

  .page-contact .contact-asym__aside {
    position: sticky;
    top: 2.4rem;
  }
}

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

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