.page-contact {
  --contact-gap: clamp(1.5rem, 4vw, 3.25rem);
  --contact-headline: clamp(1.75rem, 5vw, 2.75rem);
  background: var(--c-white);
}

.page-contact [data-chapter] {
  scroll-margin-top: 140px;
}

/* ---------- 首屏英雄区 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding-block: 2.5rem 4rem;
  background:
    linear-gradient(135deg, rgba(0, 229, 255, 0.1) 0%, transparent 42%),
    radial-gradient(130% 90% at 88% 12%, rgba(255, 107, 0, 0.2) 0%, transparent 56%),
    var(--c-primary);
  color: var(--c-white);
}

.page-contact .contact-hero .container {
  position: relative;
  z-index: 1;
}

.page-contact .contact-hero .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.625rem;
  margin-bottom: 2.75rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.page-contact .contact-hero .breadcrumb-item {
  color: rgba(255, 255, 255, 0.72);
  text-decoration: none;
  transition: color 0.2s ease;
}

.page-contact .contact-hero .breadcrumb-item:hover {
  color: var(--c-electric);
}

.page-contact .contact-hero .breadcrumb-item[aria-current="page"] {
  color: var(--c-electric);
}

.page-contact .contact-hero .breadcrumb-separator {
  color: rgba(255, 255, 255, 0.35);
}

.page-contact .contact-hero__layout {
  display: grid;
  gap: var(--contact-gap);
}

.page-contact .contact-hero__main {
  max-width: 52rem;
}

.page-contact .contact-hero__kicker {
  color: var(--c-electric);
}

.page-contact .contact-hero__title {
  font-family: var(--font-headline);
  font-size: clamp(2.5rem, 9vw, 5rem);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: 0.01em;
  text-transform: uppercase;
  margin: 0.5rem 0 1.25rem;
}

.page-contact .contact-hero__desc {
  max-width: 36rem;
  color: rgba(255, 255, 255, 0.78);
  font-size: 1.0625rem;
  line-height: 1.7;
  margin: 0;
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.875rem;
  margin-top: 2.25rem;
}

.page-contact .contact-hero__side {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: stretch;
  gap: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
}

.page-contact .contact-hero__diag {
  display: flex;
  flex-direction: row;
  gap: 0.875rem;
  align-items: stretch;
}

.page-contact .contact-hero .diagonal-accent {
  display: block;
  width: 2px;
  background: linear-gradient(180deg, var(--c-accent) 0%, transparent 90%);
  position: relative;
  flex: 0 0 auto;
}

.page-contact .contact-hero .diagonal-accent::after {
  content: "";
  position: absolute;
  right: -3px;
  top: 0;
  width: 8px;
  height: 8px;
  background: var(--c-accent);
  transform: rotate(45deg);
}

.page-contact .contact-hero .rotate-note {
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.48);
  margin: 0;
  white-space: nowrap;
}

.page-contact .contact-hero__index {
  display: flex;
  flex-wrap: wrap;
  align-content: flex-start;
  gap: 0.5rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
}

.page-contact .contact-hero__index a {
  color: rgba(255, 255, 255, 0.62);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-contact .contact-hero__index a:hover,
.page-contact .contact-hero__index a.is-active {
  color: var(--c-accent);
  border-bottom-color: var(--c-accent);
}

.page-contact .contact-hero__index a[aria-current] {
  color: var(--c-electric);
  border-bottom-color: var(--c-electric);
}

/* ---------- 官方联系渠道 ---------- */
.page-contact .contact-channels {
  background: var(--c-light);
}

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

.page-contact .contact-channels__list {
  display: grid;
  gap: 1.25rem;
  margin-top: 2.5rem;
}

.page-contact .contact-channel {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 2rem 1.75rem 1.75rem;
  background: var(--c-white);
  color: var(--c-dark);
  text-decoration: none;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.page-contact .contact-channel:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.page-contact .contact-channel:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: 3px;
}

.page-contact .contact-channel__code {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.1em;
  color: var(--c-accent);
  margin-bottom: 0.5rem;
}

.page-contact .contact-channel--phone .contact-channel__code {
  color: var(--c-gold);
}

.page-contact .contact-channel__label {
  font-family: var(--font-headline);
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--c-gray);
}

.page-contact .contact-channel__value {
  display: block;
  margin-top: 0.875rem;
  font-weight: 600;
  line-height: 1.35;
}

.page-contact .contact-channel__email {
  font-family: var(--font-mono);
  font-size: 1.125rem;
  color: var(--c-primary);
  text-decoration: underline;
  text-decoration-color: var(--c-electric);
  text-underline-offset: 4px;
  overflow-wrap: break-word;
}

.page-contact .contact-channel__phone {
  font-family: var(--font-headline);
  font-size: clamp(2rem, 9vw, 3.25rem);
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--c-accent);
}

.page-contact .contact-channel__address {
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--c-primary);
}

.page-contact .contact-channel__note {
  margin-top: 1rem;
  padding-top: 0.875rem;
  border-top: 1px solid var(--c-border);
  font-size: 0.8125rem;
  color: var(--c-gray);
}

.page-contact .contact-channels__facts {
  display: grid;
  gap: 0.875rem;
  margin-top: 2.5rem;
}

.page-contact .contact-fact {
  display: flex;
  align-items: baseline;
  gap: 0.625rem;
  padding: 1.25rem 1.5rem;
  background: var(--c-primary);
  box-shadow: var(--shadow-sm);
}

.page-contact .contact-fact .data-number {
  font-family: var(--font-headline);
  font-size: clamp(2.25rem, 7vw, 3.5rem);
  font-weight: 700;
  line-height: 1;
  color: var(--c-gold);
}

.page-contact .contact-fact .data-unit {
  font-family: var(--font-headline);
  font-size: 0.9375rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.72);
}

/* ---------- 回复保障 ---------- */
.page-contact .contact-reply {
  background: var(--c-white);
}

.page-contact .contact-reply__grid {
  display: grid;
  gap: var(--contact-gap);
  align-items: center;
}

.page-contact .contact-reply__content {
  max-width: 38rem;
}

.page-contact .contact-reply__stat {
  display: flex;
  align-items: baseline;
  gap: 0.625rem;
  margin: 1.75rem 0 0.25rem;
}

.page-contact .contact-reply__stat .data-number {
  font-family: var(--font-headline);
  font-size: clamp(5rem, 20vw, 9rem);
  font-weight: 700;
  line-height: 0.9;
  letter-spacing: -0.02em;
  color: var(--c-gold);
}

.page-contact .contact-reply__stat .data-unit {
  font-family: var(--font-headline);
  font-size: 1.375rem;
  font-weight: 600;
  color: var(--c-primary);
}

.page-contact .contact-reply__text {
  margin: 1.125rem 0 0;
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--c-dark);
}

.page-contact .contact-reply__checks {
  display: grid;
  gap: 0.625rem;
  margin-top: 1.5rem;
}

.page-contact .contact-check {
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--c-primary);
}

.page-contact .contact-check__icon {
  color: var(--c-accent);
  font-size: 0.75rem;
  line-height: 1.9;
  flex: 0 0 auto;
}

.page-contact .contact-reply__extra {
  margin-top: 1.5rem;
  padding-left: 1rem;
  border-left: 3px solid var(--c-accent);
  font-size: 0.875rem;
  color: var(--c-gray);
  line-height: 1.7;
}

.page-contact .contact-reply__img {
  width: 100%;
  margin: 0;
}

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

.page-contact .image-frame img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ---------- 常见联系事项 ---------- */
.page-contact .contact-topics {
  background:
    linear-gradient(rgba(10, 31, 68, 0.96), rgba(10, 31, 68, 0.96)),
    radial-gradient(120% 100% at 0% 0%, rgba(0, 229, 255, 0.14) 0%, transparent 50%),
    var(--c-primary);
  color: var(--c-white);
}

.page-contact .contact-topics__head .section-kicker {
  color: var(--c-electric);
}

.page-contact .contact-topics__head .section-title {
  color: var(--c-white);
}

.page-contact .contact-topics__intro {
  max-width: 44rem;
  margin: 1rem 0 0;
  font-size: 1rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.7);
}

.page-contact .contact-topics__grid {
  display: grid;
  gap: 1.25rem;
  margin-top: 2.5rem;
}

.page-contact .contact-topic {
  position: relative;
  overflow: hidden;
  margin: 0;
  padding: 1.75rem 1.75rem 1.75rem 2rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius);
  transition: background 0.25s ease, transform 0.25s ease;
}

.page-contact .contact-topic::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--c-accent) 0%, var(--c-gold) 100%);
  opacity: 0.75;
}

.page-contact .contact-topic:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-3px);
}

.page-contact .contact-topic__num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.12em;
  color: var(--c-gold);
  margin-bottom: 0.875rem;
}

.page-contact .contact-topic__title {
  margin: 0 0 0.625rem;
  font-family: var(--font-headline);
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.3;
  color: var(--c-white);
}

.page-contact .contact-topic__text {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.7);
}

.page-contact .contact-topics__links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2.5rem;
}

.page-contact .contact-topics__links .btn-outline {
  border: 1px solid rgba(255, 255, 255, 0.4);
  color: var(--c-white);
}

.page-contact .contact-topics__links .btn-outline:hover {
  border-color: var(--c-accent);
  color: var(--c-accent);
}

/* ---------- 联系地址 ---------- */
.page-contact .contact-location {
  background: var(--c-light);
}

.page-contact .contact-location__grid {
  display: grid;
  gap: var(--contact-gap);
  align-items: center;
}

.page-contact .contact-location__info {
  max-width: 38rem;
}

.page-contact .contact-location__value {
  margin: 0;
  padding: 1.75rem 0;
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
  font-family: var(--font-headline);
  font-size: clamp(1.5rem, 5.5vw, 2.5rem);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: 0.01em;
  color: var(--c-primary);
}

.page-contact .contact-location__note {
  margin: 1.25rem 0 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--c-gray);
}

.page-contact .contact-location__links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.75rem;
}

.page-contact .contact-location__img {
  width: 100%;
  margin: 0;
}

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

/* ---------- 信任声明 ---------- */
.page-contact .contact-trust {
  background: var(--c-white);
  text-align: center;
}

.page-contact .contact-trust__text {
  max-width: 48rem;
  margin: 0 auto;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--c-gray);
}

.page-contact .contact-trust__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.25rem 1.75rem;
  margin-top: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
}

.page-contact .contact-trust__links a {
  color: var(--c-primary);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-contact .contact-trust__links a:hover {
  color: var(--c-accent);
  border-bottom-color: var(--c-accent);
}

/* ---------- 桌面端布局 ---------- */
@media (min-width: 688px) {
  .page-contact .contact-channels__list {
    grid-template-columns: repeat(3, 1fr);
  }

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

  .page-contact .contact-reply__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  }

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

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

@media (min-width: 1024px) {
  .page-contact .contact-hero {
    padding-block: 3.5rem 5.5rem;
  }

  .page-contact .contact-hero__layout {
    grid-template-columns: minmax(0, 1.65fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-contact .contact-hero__side {
    justify-content: flex-end;
    padding-top: 0.25rem;
    border-top: none;
  }

  .page-contact .contact-hero__index {
    flex-direction: column;
    gap: 0.875rem;
    text-align: right;
    align-items: flex-end;
  }

  .page-contact .contact-hero__index a {
    display: inline-flex;
    align-items: baseline;
    gap: 0.5rem;
    padding-bottom: 0.25rem;
  }

  .page-contact .contact-topics__grid {
    gap: 1.5rem;
  }

  .page-contact .contact-trust__text {
    font-size: 1rem;
  }
}