.page-contact {
  --contact-gap: clamp(1.5rem, 3.4vw, 2.75rem);
  --contact-rule: rgba(201, 206, 216, 0.16);
  --contact-rule-strong: rgba(201, 206, 216, 0.34);
  --contact-measure: 62ch;
  background: var(--bg);
  color: var(--fg);
}

.page-contact .contact-top {
  padding-top: clamp(1rem, 2.4vw, 1.6rem);
}

.page-contact .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: var(--fs-index);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.page-contact .crumbs__item {
  color: var(--fg-dim);
  text-decoration: none;
}

.page-contact .crumbs__item[aria-current="page"] {
  color: var(--cyan);
}

.page-contact a.crumbs__item:hover,
.page-contact a.crumbs__item:focus-visible {
  color: var(--fg);
}

.page-contact .crumbs__divider {
  color: rgba(201, 206, 216, 0.4);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(1.4rem, 3vw, 2.2rem) 0 clamp(2.6rem, 6vw, 4.6rem);
  background:
    radial-gradient(115% 75% at 84% 0%, rgba(11, 95, 255, 0.24), transparent 62%),
    radial-gradient(90% 62% at 4% 16%, rgba(122, 92, 255, 0.18), transparent 66%),
    linear-gradient(180deg, var(--ink) 0%, var(--graphite) 100%);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(90deg, rgba(201, 206, 216, 0.07) 0 1px, transparent 1px 72px),
    repeating-linear-gradient(0deg, rgba(201, 206, 216, 0.05) 0 1px, transparent 1px 72px);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 78%);
  pointer-events: none;
}

.page-contact .contact-hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--contact-gap);
  align-items: start;
}

.page-contact .contact-hero__main {
  min-width: 0;
}

.page-contact .contact-hero__title {
  margin: 0.4rem 0 0;
  font-size: clamp(2.5rem, 9.5vw, 5rem);
  font-weight: 900;
  letter-spacing: -0.035em;
  line-height: 0.96;
  color: var(--paper);
}

.page-contact .contact-hero__lead {
  max-width: var(--contact-measure);
  margin: 1rem 0 1.6rem;
  font-size: var(--fs-body);
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .contact-hero__figure {
  margin: 0 0 1.6rem;
  aspect-ratio: 16 / 8;
  border: 1px solid var(--contact-rule);
  background: var(--stone);
}

.page-contact .contact-hero__figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: saturate(0.85) contrast(1.06);
}

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

.page-contact .contact-channel {
  min-width: 0;
  padding: 0.85rem 0 0.85rem 0.95rem;
  border-left: 2px solid rgba(11, 95, 255, 0.6);
  border-bottom: 1px solid var(--contact-rule);
}

.page-contact .contact-channel:first-child {
  padding-top: 0.3rem;
}

.page-contact .contact-channel .index-label {
  color: var(--fg-dim);
}

.page-contact .contact-channel__mail {
  display: block;
  margin: 0.35rem 0 0.45rem;
  font-family: var(--font-mono);
  font-size: clamp(0.98rem, 3.3vw, 1.6rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.25;
  color: var(--paper);
  text-decoration: none;
  overflow-wrap: anywhere;
}

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

.page-contact .contact-channel__tel {
  display: block;
  margin: 0.35rem 0 0.45rem;
  font-size: clamp(1.85rem, 7vw, 3rem);
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.05;
  font-variant-numeric: tabular-nums;
  color: var(--paper);
  text-decoration: none;
}

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

.page-contact .contact-channel__address {
  display: block;
  margin: 0.35rem 0 0.45rem;
  font-style: normal;
  font-size: clamp(1rem, 2.6vw, 1.2rem);
  font-weight: 600;
  line-height: 1.6;
  color: var(--paper);
}

.page-contact .contact-channel__note {
  margin: 0;
  max-width: 44ch;
  font-size: var(--fs-sm);
  line-height: 1.7;
  color: var(--fg-dim);
}

.page-contact .contact-hero__side {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.9rem;
}

.page-contact .contact-side__card {
  padding: clamp(1rem, 2.6vw, 1.5rem);
  border: 1px solid var(--contact-rule);
  border-radius: var(--radius);
  background: rgba(42, 46, 54, 0.72);
  backdrop-filter: blur(6px);
}

.page-contact .contact-side__card .index-label {
  color: var(--cyan);
}

.page-contact .contact-side__clock {
  display: flex;
  align-items: baseline;
  gap: 0.35rem;
  margin: 0.5rem 0 0.6rem;
  font-size: clamp(1.9rem, 6vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--paper);
  font-variant-numeric: tabular-nums;
}

.page-contact .contact-side__clock span {
  color: var(--blue);
}

.page-contact .contact-side__text {
  margin: 0;
  font-size: var(--fs-sm);
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .contact-side__card--amber {
  border-color: rgba(255, 176, 32, 0.42);
  border-left-width: 3px;
  background: rgba(255, 176, 32, 0.08);
}

.page-contact .contact-side__card--amber .index-label {
  color: var(--amber);
}

.page-contact .contact-side__links {
  display: grid;
  gap: 0.5rem;
}

.page-contact .contact-side__link {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--contact-rule);
  border-radius: var(--radius);
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--paper);
  text-decoration: none;
  background: rgba(11, 13, 18, 0.5);
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease);
}

.page-contact .contact-side__link span {
  color: var(--blue);
  font-family: var(--font-mono);
}

.page-contact .contact-side__link:hover,
.page-contact .contact-side__link:focus-visible {
  border-color: var(--blue);
  transform: translateX(3px);
}

/* ---------- 锚点目录 ---------- */
.page-contact .contact-jump {
  background: var(--bg-raise);
  border-top: 1px solid var(--contact-rule);
  border-bottom: 1px solid var(--contact-rule);
}

.page-contact .contact-jump__list {
  display: flex;
  gap: 0.45rem;
  margin: 0;
  padding: 0.8rem 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-contact .contact-jump__list::-webkit-scrollbar {
  display: none;
}

.page-contact .contact-jump__list a {
  display: inline-block;
  padding: 0.35rem 0.7rem;
  border: 1px solid var(--contact-rule);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: var(--fs-index);
  letter-spacing: 0.06em;
  color: var(--fg-soft);
  text-decoration: none;
  white-space: nowrap;
}

.page-contact .contact-jump__list a:hover,
.page-contact .contact-jump__list a:focus-visible {
  border-color: var(--blue);
  color: var(--paper);
}

/* ---------- 通用章节头 ---------- */
.page-contact .contact-head {
  max-width: 46rem;
  margin-bottom: clamp(1.6rem, 4vw, 2.6rem);
}

.page-contact .contact-head .index-label {
  color: var(--blue);
}

.page-contact .contact-head__title {
  margin: 0.4rem 0 0.7rem;
  font-size: clamp(1.6rem, 4.6vw, 2.6rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.12;
}

.page-contact .contact-head__desc {
  margin: 0;
  font-size: var(--fs-body);
  line-height: 1.8;
  color: var(--fg-dim);
}

.page-contact .contact-head--dark .contact-head__title {
  color: var(--paper);
}

/* ---------- 回复节奏 ---------- */
.page-contact .contact-hours {
  padding: clamp(2.4rem, 6vw, 4.4rem) 0;
  background: var(--paper);
  color: var(--ink);
}

.page-contact .contact-hours .index-label {
  color: var(--blue-deep);
}

.page-contact .contact-hours .contact-head__title {
  color: var(--ink);
}

.page-contact .contact-hours .contact-head__desc {
  color: rgba(11, 13, 18, 0.72);
}

.page-contact .contact-hours__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.4rem, 3.4vw, 2.6rem);
  align-items: start;
}

.page-contact .contact-hours__figure {
  margin: 0;
  aspect-ratio: 10 / 7;
  border: 1px solid rgba(11, 13, 18, 0.14);
  background: var(--stone);
}

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

.page-contact .contact-hours__body p {
  margin: 0 0 1rem;
  font-size: var(--fs-body);
  line-height: 1.8;
}

.page-contact .contact-hours__list {
  margin: 0 0 1.1rem;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.7rem;
}

.page-contact .contact-hours__list li {
  padding-left: 1.1rem;
  position: relative;
  font-size: var(--fs-sm);
  line-height: 1.75;
  color: rgba(11, 13, 18, 0.82);
}

.page-contact .contact-hours__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 7px;
  height: 7px;
  background: var(--blue);
  clip-path: polygon(50% 0, 100% 100%, 0 100%);
}

.page-contact .contact-hours__list strong {
  color: var(--ink);
  font-weight: 700;
}

.page-contact .contact-hours__tip {
  margin: 0;
  padding: 0.85rem 1rem;
  border-left: 3px solid var(--cyan);
  background: rgba(53, 224, 215, 0.14);
  font-size: var(--fs-sm);
  line-height: 1.75;
  color: rgba(11, 13, 18, 0.84);
}

/* ---------- 合作咨询 ---------- */
.page-contact .contact-collab {
  padding: clamp(2.4rem, 6vw, 4.4rem) 0;
  background:
    radial-gradient(90% 70% at 92% 0%, rgba(122, 92, 255, 0.16), transparent 66%),
    var(--bg-raise);
  border-top: 1px solid var(--contact-rule);
}

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

.page-contact .contact-collab__card {
  position: relative;
  padding: clamp(1.1rem, 2.8vw, 1.6rem);
  border: 1px solid var(--contact-rule);
  border-top: 3px solid var(--blue);
  border-radius: var(--radius);
  background: rgba(42, 46, 54, 0.6);
}

.page-contact .contact-collab__card--violet {
  border-top-color: var(--violet);
}

.page-contact .contact-collab__card--amber {
  border-top-color: var(--amber);
}

.page-contact .contact-collab__card h3 {
  margin: 0 0 0.7rem;
  font-size: clamp(1.05rem, 2.8vw, 1.25rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .contact-collab__card p {
  margin: 0 0 0.8rem;
  font-size: var(--fs-sm);
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .contact-collab__prep {
  margin: 0;
  padding-top: 0.8rem;
  border-top: 1px dashed var(--contact-rule-strong);
  color: var(--fg-dim);
}

.page-contact .contact-collab__prep span {
  display: inline-block;
  margin-right: 0.5rem;
  font-family: var(--font-mono);
  font-size: var(--fs-index);
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-contact .contact-collab__foot {
  max-width: var(--contact-measure);
  margin: clamp(1.2rem, 3vw, 1.8rem) 0 0;
  font-size: var(--fs-sm);
  line-height: 1.8;
  color: var(--fg-dim);
}

.page-contact .contact-collab__foot a,
.page-contact .contact-checklist__foot a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .contact-collab__foot a:hover,
.page-contact .contact-checklist__foot a:hover {
  color: var(--paper);
}

/* ---------- 到访与邮寄 ---------- */
.page-contact .contact-visit {
  padding: clamp(2.4rem, 6vw, 4.2rem) 0;
  background: var(--paper);
  color: var(--ink);
  border-top: 3px solid var(--blue);
}

.page-contact .contact-visit .index-label {
  color: var(--blue-deep);
}

.page-contact .contact-visit__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.4rem, 3.4vw, 2.6rem);
  align-items: start;
}

.page-contact .contact-visit__address {
  display: block;
  margin: 0.5rem 0 1rem;
  font-style: normal;
  font-size: clamp(1.3rem, 4.2vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.015em;
  line-height: 1.35;
  color: var(--ink);
}

.page-contact .contact-visit__text {
  margin: 0;
  max-width: 48ch;
  font-size: var(--fs-body);
  line-height: 1.8;
  color: rgba(11, 13, 18, 0.76);
}

.page-contact .contact-visit__notes {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.75rem;
}

.page-contact .contact-visit__notes li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.75rem;
  align-items: start;
  padding: 0.8rem 0.9rem;
  border: 1px solid rgba(11, 13, 18, 0.14);
  border-radius: var(--radius);
  background: rgba(42, 46, 54, 0.06);
  font-size: var(--fs-sm);
  line-height: 1.7;
  color: rgba(11, 13, 18, 0.84);
}

.page-contact .contact-visit__notes .num {
  font-size: var(--fs-index);
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--blue-deep);
}

/* ---------- 准备清单 ---------- */
.page-contact .contact-checklist {
  padding: clamp(2.4rem, 6vw, 4.4rem) 0;
  background: linear-gradient(180deg, var(--ink) 0%, var(--graphite) 100%);
}

.page-contact .contact-checklist__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: var(--contact-rule);
  border-top: 1px solid var(--contact-rule);
  border-bottom: 1px solid var(--contact-rule);
}

.page-contact .contact-checklist__list > li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.9rem;
  padding: 1.1rem 0.2rem;
  background: var(--ink);
}

.page-contact .contact-checklist__num {
  font-size: clamp(1.2rem, 3.4vw, 1.6rem);
  font-weight: 700;
  line-height: 1;
  color: var(--blue);
  font-variant-numeric: tabular-nums;
}

.page-contact .contact-checklist__body h3 {
  margin: 0 0 0.35rem;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-contact .contact-checklist__body p {
  margin: 0;
  font-size: var(--fs-sm);
  line-height: 1.75;
  color: var(--fg-dim);
}

.page-contact .contact-checklist__body a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .contact-checklist__foot {
  max-width: var(--contact-measure);
  margin: 1.4rem 0 0;
  font-size: var(--fs-sm);
  line-height: 1.8;
  color: var(--fg-dim);
}

/* ---------- 结尾行动 ---------- */
.page-contact .contact-cta {
  padding: clamp(2.2rem, 5vw, 3.4rem) 0;
  background:
    linear-gradient(100deg, rgba(11, 95, 255, 0.24), rgba(122, 92, 255, 0.18)),
    var(--stone);
  border-top: 1px solid var(--contact-rule);
}

.page-contact .contact-cta__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.2rem, 3vw, 2rem);
  align-items: center;
}

.page-contact .contact-cta .index-label {
  color: var(--cyan);
}

.page-contact .contact-cta__title {
  margin: 0.4rem 0 0.6rem;
  font-size: clamp(1.4rem, 4vw, 2.1rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--paper);
}

.page-contact .contact-cta__text {
  margin: 0;
  max-width: 46ch;
  font-size: var(--fs-sm);
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .contact-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 48rem) {
  .page-contact .contact-channels {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .page-contact .contact-side__links {
    grid-column: 1 / -1;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

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

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

  .page-contact .contact-checklist__list > li {
    grid-template-columns: 4.5rem minmax(0, 1fr);
    padding: 1.3rem 0.4rem;
  }

  .page-contact .contact-cta__inner {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
  }
}

@media (min-width: 64rem) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.28fr) minmax(0, 0.72fr);
    gap: clamp(2rem, 4vw, 3.4rem);
  }

  .page-contact .contact-hero__side {
    grid-template-columns: minmax(0, 1fr);
    position: sticky;
    top: calc(var(--header-offset) + 1rem);
  }

  .page-contact .contact-side__links {
    grid-column: auto;
    grid-template-columns: minmax(0, 1fr);
  }

  .page-contact .contact-hero__figure {
    aspect-ratio: 21 / 9;
  }

  .page-contact .contact-hours__grid {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  }

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

  .page-contact .contact-visit__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: clamp(2rem, 4vw, 3.4rem);
  }

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