.page-contact {
  overflow-x: hidden;
  background: var(--c-space);
  color: var(--c-white);
}

.page-contact .container {
  width: min(var(--container), 100% - 2 * var(--gutter));
  margin-inline: auto;
}

.page-contact img {
  max-width: 100%;
  height: auto;
}

/* ===== 面包屑 ===== */
.page-contact .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.375rem 0.75rem;
  padding-top: clamp(1rem, 3vw, 2rem);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--c-slate);
}

.page-contact .breadcrumb-item + .breadcrumb-item::before {
  content: "⁄";
  margin-right: 0.75rem;
  color: var(--c-slate);
  opacity: 0.5;
}

.page-contact .breadcrumb-item a {
  color: var(--c-silver);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.page-contact .breadcrumb-item a:hover,
.page-contact .breadcrumb-item a:focus-visible {
  color: var(--c-accent);
}

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

/* ===== 首屏 ===== */
.page-contact .contact-hero {
  position: relative;
  min-height: clamp(36rem, 88vh, 52rem);
  display: flex;
  align-items: center;
  padding-block: clamp(2.5rem, 6vw, 5rem);
  overflow: hidden;
}

.page-contact .hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 2rem;
}

.page-contact .hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin-bottom: 1.5rem;
}

.page-contact .hero-kicker::before {
  content: "";
  width: 2.5rem;
  height: 1px;
  background: var(--c-accent);
}

.page-contact .contact-hero h1 {
  font-family: var(--font-head);
  font-size: clamp(3rem, 10vw, 6rem);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -0.03em;
  color: var(--c-white);
  margin-bottom: 1.75rem;
  text-wrap: balance;
}

.page-contact .hero-abstract {
  max-width: 38rem;
  font-family: var(--font-body);
  font-size: clamp(1rem, 2vw, 1.125rem);
  line-height: 1.9;
  color: var(--c-silver);
}

.page-contact .hero-orbit {
  position: absolute;
  bottom: -2rem;
  right: -4rem;
  width: 220px;
  aspect-ratio: 1;
  opacity: 0.5;
  pointer-events: none;
}

.page-contact .hero-orbit svg {
  width: 100%;
  height: 100%;
}

.page-contact .hero-guide {
  margin-top: 3rem;
}

.page-contact .hero-guide-link {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  letter-spacing: 0.08em;
  color: var(--c-accent);
  text-decoration: none;
  padding-bottom: 0.25rem;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-contact .hero-guide-link:hover,
.page-contact .hero-guide-link:focus-visible {
  border-bottom-color: var(--c-accent);
  transform: translateY(4px);
}

/* ===== 章节头部 ===== */
.page-contact .section-head {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  margin-bottom: 3rem;
}

.page-contact .section-index {
  font-family: var(--font-mono);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 0.9;
  color: transparent;
  -webkit-text-stroke: 1px var(--c-slate);
  opacity: 0.9;
  flex-shrink: 0;
}

.page-contact .section-title {
  font-family: var(--font-head);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  line-height: 1.2;
  color: var(--c-white);
  margin: 0 0 0.5rem;
}

.page-contact .section-desc {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  letter-spacing: 0.06em;
  color: var(--c-slate);
  margin: 0;
}

/* ===== 01 联系渠道 ===== */
.page-contact .channel-section {
  position: relative;
  padding-block: var(--gap-section);
  background-image: radial-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 24px 24px;
}

.page-contact .channel-grid {
  display: grid;
  gap: 1.25rem;
}

.page-contact .channel-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1rem;
  padding: clamp(1.5rem, 4vw, 2.5rem);
  background: var(--c-navy);
  border-radius: var(--radius);
  text-decoration: none;
  color: inherit;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.04);
  transition: transform var(--dur) var(--ease), background-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-contact .channel-card:hover,
.page-contact .channel-card:focus-visible {
  background: #1E3C8C;
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
}

.page-contact .channel-label {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-accent);
  border: 1px solid rgba(255, 106, 0, 0.4);
  border-radius: 999px;
  padding: 0.375rem 1rem;
}

.page-contact .channel-value {
  font-family: var(--font-mono);
  font-size: clamp(1.25rem, 4vw, 2rem);
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--c-white);
  word-break: break-all;
}

.page-contact .channel-usage {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--c-silver);
}

.page-contact .channel-action {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--c-accent);
  margin-top: auto;
  padding-top: 0.5rem;
}

.page-contact .channel-note {
  margin-top: 1.5rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--c-slate);
}

.page-contact .channel-note a {
  color: var(--c-info);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-contact .channel-note a:hover,
.page-contact .channel-note a:focus-visible {
  color: var(--c-accent);
  border-bottom-color: var(--c-accent);
}

/* ===== 02 服务承诺 ===== */
.page-contact .promise-section {
  padding-block: var(--gap-section);
  background: linear-gradient(180deg, transparent, rgba(22, 51, 122, 0.18));
}

.page-contact .promise-layout {
  display: grid;
  gap: 2.5rem;
}

.page-contact .promise-list {
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
  display: grid;
  gap: 2rem;
}

.page-contact .promise-item {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
}

.page-contact .promise-dot {
  flex: 0 0 0.5rem;
  width: 0.5rem;
  height: 0.5rem;
  margin-top: 0.625rem;
  border-radius: 50%;
  background: var(--c-accent);
  box-shadow: 0 0 12px rgba(255, 106, 0, 0.6);
}

.page-contact .promise-item h3 {
  font-family: var(--font-head);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--c-white);
  margin: 0 0 0.375rem;
}

.page-contact .promise-item p {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--c-silver);
  margin: 0;
}

.page-contact .promise-figure {
  margin: 0;
  position: relative;
}

.page-contact .promise-figure img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  display: block;
}

.page-contact .figure-caption {
  margin-top: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--c-slate);
  text-transform: uppercase;
}

/* ===== 03 咨询分类 ===== */
.page-contact .category-section {
  padding-block: var(--gap-section);
}

.page-contact .category-grid {
  display: grid;
  gap: 1.25rem;
}

.page-contact .category-card {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: clamp(1.5rem, 4vw, 2.25rem);
  background: var(--c-navy);
  border-radius: var(--radius);
  border-top: 2px solid transparent;
  transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-contact .category-card:hover,
.page-contact .category-card:focus-within {
  background: #1E3C8C;
  border-top-color: var(--c-accent);
  transform: translateY(-4px);
}

.page-contact .category-ref {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.12em;
  color: var(--c-accent);
}

.page-contact .category-card h3 {
  font-family: var(--font-head);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--c-white);
  margin: 0;
  line-height: 1.4;
}

.page-contact .category-card p {
  font-family: var(--font-body);
  font-size: 0.925rem;
  line-height: 1.75;
  color: var(--c-silver);
  margin: 0;
  flex: 1;
}

.page-contact .category-mail {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--c-info);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
  word-break: break-all;
}

.page-contact .category-mail:hover,
.page-contact .category-mail:focus-visible {
  color: var(--c-accent);
  border-bottom-color: var(--c-accent);
}

.page-contact .category-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--c-accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-contact .category-link:hover,
.page-contact .category-link:focus-visible {
  border-bottom-color: var(--c-accent);
}

/* ===== 04 信息登记地址 ===== */
.page-contact .address-section {
  padding-block: var(--gap-section);
}

.page-contact .address-layout {
  display: grid;
  gap: 2rem;
  align-items: center;
}

.page-contact .address-map {
  margin: 0;
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--c-navy);
}

.page-contact .address-map img {
  width: 100%;
  height: auto;
  display: block;
}

.page-contact .address-info .section-head {
  margin-bottom: 1.5rem;
}

.page-contact .address-text {
  font-family: var(--font-head);
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 600;
  font-style: normal;
  line-height: 1.5;
  color: var(--c-white);
  margin-bottom: 0.75rem;
}

.page-contact .address-note {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--c-slate);
  max-width: 30rem;
}

/* ===== 隐私提醒 ===== */
.page-contact .privacy-tip {
  padding-block: clamp(2rem, 5vw, 4rem) var(--gap-section);
}

.page-contact .privacy-box {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding: clamp(1.5rem, 4vw, 2.5rem);
  background: var(--c-navy);
  border: 1px solid rgba(255, 106, 0, 0.25);
  border-radius: var(--radius);
}

.page-contact .privacy-icon {
  font-size: 2rem;
  color: var(--c-accent);
  line-height: 1;
}

.page-contact .privacy-title {
  font-family: var(--font-head);
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--c-white);
  margin: 0 0 0.5rem;
}

.page-contact .privacy-copy p {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--c-silver);
  margin: 0;
}

.page-contact .privacy-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--c-accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
  align-self: flex-start;
}

.page-contact .privacy-link:hover,
.page-contact .privacy-link:focus-visible {
  border-bottom-color: var(--c-accent);
}

/* ===== 桌面端 ===== */
@media (min-width: 768px) {
  .page-contact .hero-grid {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }

  .page-contact .hero-orbit {
    top: 50%;
    bottom: auto;
    right: -2rem;
    transform: translateY(-50%);
    width: clamp(240px, 36vw, 380px);
    opacity: 0.8;
  }

  .page-contact .channel-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }

  .page-contact .promise-layout {
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
  }

  .page-contact .category-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
  }

  .page-contact .category-card:nth-child(3n+2) {
    margin-top: 2rem;
  }

  .page-contact .address-layout {
    grid-template-columns: 3fr 2fr;
    gap: 3rem;
  }

  .page-contact .privacy-box {
    flex-direction: row;
    align-items: center;
  }

  .page-contact .privacy-link {
    margin-left: auto;
  }
}