.page-contact {
  --contact-card-deep: #11264F;
  --contact-card-line: rgba(141, 155, 181, 0.28);
  --contact-body-muted: rgba(245, 247, 250, 0.72);
  --contact-light-ink: #2B3547;
  display: block;
}

.page-contact .contact-hero {
  position: relative;
  background: var(--bg-primary);
  color: var(--text-light);
  overflow: hidden;
  padding: 48px 0 88px;
}

.page-contact .contact-hero__frame {
  position: absolute;
  top: 2%;
  right: -14%;
  width: 54%;
  height: 96%;
  background: var(--bg-light);
  transform: skewX(-12deg);
  z-index: 0;
  display: none;
}

.page-contact .contact-hero__inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 40px;
}

.page-contact .contact-hero__word {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(68px, 14vw, 180px);
  line-height: 0.85;
  letter-spacing: 0.02em;
  color: transparent;
  -webkit-text-stroke: 2px rgba(0, 194, 209, 0.48);
  user-select: none;
  pointer-events: none;
  margin-bottom: 0.08em;
}

@supports not (-webkit-text-stroke: 2px rgba(0, 194, 209, 0.48)) {
  .page-contact .contact-hero__word {
    color: rgba(0, 194, 209, 0.22);
  }
}

.page-contact .contact-hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--accent-orange);
  margin: 14px 0 12px;
}

.page-contact .contact-hero__kicker::before {
  content: '';
  width: 28px;
  height: 2px;
  background: var(--accent-orange);
  display: inline-block;
}

.page-contact .contact-hero__title {
  font-family: var(--font-display);
  font-size: clamp(30px, 4.6vw, 54px);
  line-height: 1.16;
  font-weight: 900;
  margin: 0 0 20px;
  max-width: 12em;
  letter-spacing: 0.01em;
}

.page-contact .contact-hero__desc {
  font-size: var(--size-body);
  line-height: 1.8;
  color: var(--contact-body-muted);
  max-width: 52ch;
  margin: 0 0 24px;
}

.page-contact .contact-hero__facts {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 26px;
  margin: 0 0 8px;
  padding: 0;
}

.page-contact .contact-hero__fact {
  font-size: 14px;
  line-height: 1.5;
  color: rgba(245, 247, 250, 0.78);
  display: flex;
  align-items: center;
  gap: 9px;
}

.page-contact .contact-hero__fact-dot {
  width: 6px;
  height: 6px;
  border-radius: 2px;
  background: var(--accent-cyan);
  flex: none;
}

.page-contact .contact-hero__fact strong {
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 15px;
}

.page-contact .contact-hero__aside {
  grid-row: 2;
  align-self: stretch;
}

.page-contact .contact-card {
  position: relative;
  display: flex;
  flex-direction: column;
  height: 100%;
  background: var(--contact-card-deep);
  color: var(--text-light);
  padding: 34px 28px 28px;
  clip-path: polygon(0% 0%, calc(100% - 28px) 0%, 100% 28px, 100% 100%, 28px 100%, 0% calc(100% - 28px));
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.32);
}

.page-contact .contact-card::after {
  content: '';
  position: absolute;
  top: 9px;
  left: 9px;
  right: 9px;
  bottom: 9px;
  border: 1px solid rgba(255, 255, 255, 0.07);
  pointer-events: none;
}

.page-contact .contact-card__head {
  display: flex;
  flex-direction: column;
  gap: 14px;
  border-bottom: 1px solid var(--contact-card-line);
  padding-bottom: 24px;
}

.page-contact .contact-card__index {
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--accent-orange);
  background: rgba(255, 107, 0, 0.12);
  border: 1px solid rgba(255, 107, 0, 0.4);
  border-radius: var(--radius-pill);
  padding: 4px 12px;
  white-space: nowrap;
}

.page-contact .contact-card__heading {
  text-align: left;
}

.page-contact .contact-card__sub {
  display: block;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: rgba(245, 247, 250, 0.6);
  margin-bottom: 6px;
}

.page-contact .contact-card__title {
  display: block;
  font-family: var(--font-display);
  font-size: 28px;
  line-height: 1.1;
  color: var(--text-light);
}

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

.page-contact .contact-card__item {
  display: grid;
  gap: 6px;
  padding: 20px 0;
  border-bottom: 1px solid var(--contact-card-line);
}

.page-contact .contact-card__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--accent-cyan);
  text-transform: uppercase;
}

.page-contact .contact-card__value {
  font-size: clamp(15px, 1.4vw, 19px);
  line-height: 1.55;
  color: var(--text-light);
  text-decoration: none;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .contact-card__value--mono {
  font-family: var(--font-mono);
}

.page-contact a.contact-card__value:hover {
  color: var(--accent-orange-light);
}

.page-contact .contact-card__note {
  margin: 24px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(245, 247, 250, 0.66);
}

.page-contact .contact-hero__media {
  position: relative;
  grid-row: 3;
  align-self: start;
}

.page-contact .contact-hero__media::before {
  content: 'NETWORK · 联系节点';
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 2;
  background: rgba(11, 27, 61, 0.82);
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  backdrop-filter: blur(2px);
}

.page-contact .contact-hero__media::after {
  content: '';
  position: absolute;
  top: -8px;
  right: 18px;
  width: 74px;
  height: 16px;
  background: var(--accent-orange);
  clip-path: polygon(0 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
}

.page-contact .contact-hero__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 680 / 460;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%);
}

.page-contact .support-inbox {
  background: var(--bg-primary);
  padding: 4px 0 80px;
}

.page-contact .support-inbox__panel {
  position: relative;
  display: grid;
  gap: 28px;
  margin-top: 36px;
  padding: 32px 28px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-card);
}

.page-contact .support-inbox__panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: 28px;
  width: 56px;
  height: 4px;
  background: var(--accent-orange);
  border-radius: 0 0 2px 2px;
}

.page-contact .support-inbox__main {
  min-width: 0;
}

.page-contact .support-inbox__eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--accent-cyan);
  margin: 0 0 12px;
}

.page-contact .support-inbox__addr {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(20px, 3.2vw, 32px);
  line-height: 1.35;
  color: var(--text-light);
  text-decoration: none;
  overflow-wrap: anywhere;
  word-break: break-word;
  margin-bottom: 16px;
}

.page-contact .support-inbox__addr:hover {
  color: var(--accent-orange-light);
}

.page-contact .support-inbox__desc {
  font-size: 15px;
  line-height: 1.75;
  color: var(--contact-body-muted);
  max-width: 48ch;
  margin: 0;
}

.page-contact .support-inbox__meta {
  display: flex;
  flex-direction: column;
  gap: 12px;
  border-top: 1px dashed var(--border-light);
  padding-top: 24px;
}

.page-contact .support-inbox__tag {
  display: inline-flex;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--text-light);
  background: var(--accent-orange);
  border-radius: var(--radius-pill);
  padding: 4px 12px;
}

.page-contact .support-inbox__hours {
  font-weight: 700;
  font-size: 22px;
  line-height: 1.3;
  color: var(--text-light);
}

.page-contact .support-inbox__note {
  font-size: 13px;
  line-height: 1.7;
  color: rgba(245, 247, 250, 0.62);
}

.page-contact .service-scope {
  background: var(--bg-light);
  color: var(--text-dark);
  padding: 72px 0;
}

.page-contact .service-scope .section-title,
.page-contact .service-scope .section-intro {
  color: var(--text-dark);
}

.page-contact .service-scope .chapter-index {
  color: var(--text-dark);
}

.page-contact .service-scope__grid {
  display: grid;
  gap: 40px;
  margin-top: 40px;
}

.page-contact .service-scope__intro p {
  font-size: clamp(19px, 2.4vw, 28px);
  line-height: 1.55;
  font-weight: 700;
  margin: 0;
  padding-left: 20px;
  border-left: 4px solid var(--accent-orange);
}

.page-contact .service-scope__content p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--contact-light-ink);
  margin: 0 0 28px;
  max-width: 62ch;
}

.page-contact .service-scope__rules {
  list-style: none;
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
}

.page-contact .service-scope__rules li {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 14px 4px;
  border-bottom: 1px dashed var(--border-blue);
  font-size: 15px;
  line-height: 1.65;
  color: var(--contact-light-ink);
}

.page-contact .service-scope__num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent-cyan);
  flex: none;
}

.page-contact .self-help {
  position: relative;
  background: var(--bg-primary);
  color: var(--text-light);
  padding: 80px 0 64px;
}

.page-contact .self-help::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border-light) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-light) 1px, transparent 1px);
  background-size: 32px 32px;
  opacity: 0.18;
  pointer-events: none;
}

.page-contact .self-help__container {
  position: relative;
  z-index: 1;
}

.page-contact .section-head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 4px;
}

.page-contact .section-intro {
  color: var(--text-light);
  font-size: 16px;
  line-height: 1.7;
  max-width: 640px;
  margin: 4px 0 0;
}

.page-contact .self-help__grid {
  display: grid;
  gap: 20px;
  margin-top: 36px;
}

.page-contact .self-help__card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 220px;
  padding: 28px 24px 22px;
  background: var(--bg-secondary);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-card);
  color: var(--text-light);
  text-decoration: none;
  transition: background var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
}

.page-contact .self-help__card:hover {
  background: #172D5A;
  transform: translateY(-4px);
  border-color: var(--accent-orange);
}

.page-contact .self-help__card-num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--accent-cyan);
}

.page-contact .self-help__card-title {
  font-size: 20px;
  font-weight: 700;
  margin: 0;
  line-height: 1.35;
}

.page-contact .self-help__card-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--contact-body-muted);
  margin: 0;
  flex: 1;
}

.page-contact .self-help__card-link {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--accent-orange);
  opacity: 0.85;
  transition: opacity var(--transition-base);
}

.page-contact .self-help__card:hover .self-help__card-link {
  opacity: 1;
}

.page-contact .self-help__bottom {
  display: grid;
  gap: 28px;
  margin-top: 48px;
}

.page-contact .self-help__map {
  background: var(--bg-secondary);
  border-radius: var(--radius-card);
  padding: 16px;
  display: grid;
  gap: 18px;
  align-items: center;
}

.page-contact .self-help__map-img-wrap {
  overflow: hidden;
  background: var(--bg-primary);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

.page-contact .self-help__map-img-wrap img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 600 / 400;
}

.page-contact .self-help__map-tag {
  display: inline-flex;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--accent-cyan);
  border: 1px solid rgba(0, 194, 209, 0.5);
  border-radius: var(--radius-pill);
  padding: 4px 12px;
  margin-bottom: 10px;
}

.page-contact .self-help__map-address {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.45;
  margin: 0 0 10px;
}

.page-contact .self-help__map-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--contact-body-muted);
  margin: 0;
}

.page-contact .self-help__faq {
  background: var(--bg-secondary);
  border-radius: var(--radius-card);
  padding: 28px 24px;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.page-contact .self-help__faq-title {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--accent-orange);
  margin: 0 0 8px;
}

.page-contact .faq-item {
  border-bottom: 1px solid var(--border-light);
  padding: 16px 0;
}

.page-contact .faq-item:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-contact .faq-item summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-light);
  list-style: none;
  position: relative;
  padding-right: 32px;
}

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

.page-contact .faq-item summary::after {
  content: '+';
  position: absolute;
  right: 4px;
  top: 0;
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1;
  color: var(--accent-cyan);
  transition: transform 0.2s ease;
}

.page-contact .faq-item[open] summary::after {
  content: '−';
  transform: rotate(180deg);
}

.page-contact .faq-item p {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--contact-body-muted);
}

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

@media (min-width: 900px) {
  .page-contact .contact-hero__inner {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 48px 64px;
  }

  .page-contact .contact-hero__copy {
    grid-column: 1;
    grid-row: 1;
  }

  .page-contact .contact-hero__media {
    grid-column: 1;
    grid-row: 2;
  }

  .page-contact .contact-hero__aside {
    grid-column: 2;
    grid-row: 1 / span 2;
    align-self: center;
  }

  .page-contact .contact-hero__frame {
    display: block;
  }

  .page-contact .contact-hero__word {
    font-size: clamp(110px, 13vw, 190px);
  }

  .page-contact .contact-card__head {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
  }

  .page-contact .contact-card__heading {
    text-align: right;
  }

  .page-contact .contact-card {
    padding: 36px 32px 32px;
  }

  .page-contact .support-inbox__panel {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.65fr);
    gap: 48px;
    align-items: center;
    padding: 36px 40px;
  }

  .page-contact .support-inbox__meta {
    border-top: 0;
    border-left: 1px dashed var(--border-light);
    padding-top: 0;
    padding-left: 48px;
  }

  .page-contact .service-scope__grid {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    gap: 72px;
  }

  .page-contact .service-scope__rules {
    grid-template-columns: 1fr 1fr;
  }

  .page-contact .self-help__bottom {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
    align-items: stretch;
  }

  .page-contact .self-help__map {
    grid-template-columns: auto minmax(0, 1fr);
    gap: 24px;
  }
}

@media (min-width: 1024px) {
  .page-contact .self-help__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}