.page-contact {
  position: relative;
  overflow-x: hidden;
  background: var(--primary-bg);
  color: var(--text-primary);
  font-family: var(--font-body), 'PingFang SC', sans-serif;
  line-height: 1.7;
}
.page-contact .container {
  position: relative;
  z-index: 1;
}
.page-contact a {
  color: var(--accent-green);
  text-decoration: none;
}
.page-contact a:hover,
.page-contact a:focus-visible {
  color: var(--accent-orange);
  text-decoration: underline;
  text-underline-offset: 4px;
}
.page-contact a:focus-visible {
  outline: 2px solid var(--accent-green);
  outline-offset: 2px;
}
.page-contact h1,
.page-contact h2,
.page-contact h3 {
  font-family: var(--font-headline), 'PingFang SC', sans-serif;
}

/* ---------- Hero ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: 56px 0 48px;
  background:
    radial-gradient(ellipse at 100% 0%, rgba(255, 106, 0, 0.12) 0%, transparent 55%),
    radial-gradient(ellipse at 0% 100%, rgba(57, 255, 20, 0.08) 0%, transparent 50%);
  border-bottom: 1px solid var(--border-line);
}
.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  left: -40px;
  bottom: -24px;
  width: 300px;
  height: 48px;
  background: rgba(57, 255, 20, 0.08);
  transform: rotate(-12deg);
  pointer-events: none;
  z-index: 0;
}
.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(circle, rgba(57, 255, 20, 0.18) 0 1px, transparent 1px),
    radial-gradient(circle, rgba(176, 196, 222, 0.12) 0 1px, transparent 1px),
    radial-gradient(circle, rgba(255, 106, 0, 0.14) 0 1px, transparent 1px);
  background-size: 180px 180px, 220px 220px, 260px 260px;
  background-position: 0 0, 70px 90px, 140px 20px;
}
.page-contact .breadcrumb-sep {
  margin: 0 8px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}
.page-contact .hero-eyebrow {
  font-family: var(--font-mono);
  color: var(--accent-green);
  letter-spacing: 0.18em;
  font-size: 0.82rem;
  text-transform: uppercase;
  margin: 24px 0 12px;
}
.page-contact .contact-hero h1 {
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  line-height: 1.12;
  margin: 0 0 16px;
  letter-spacing: 0.01em;
}
.page-contact .hero-lead {
  max-width: 720px;
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin-bottom: 28px;
}
.page-contact .hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 28px;
}
.page-contact .stat-chip {
  background: var(--highlight-bg);
  border: 1px solid rgba(57, 255, 20, 0.3);
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
  padding: 14px 22px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.page-contact .stat-chip span {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}
.page-contact .stat-chip small {
  font-size: 0.8rem;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
}

/* ---------- Section heading ---------- */
.page-contact .section-heading {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 28px;
}
.page-contact .section-heading > div {
  min-width: 0;
}
.page-contact .section-index {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--accent-green);
  background: var(--highlight-bg);
  border: 1px solid rgba(57, 255, 20, 0.25);
  padding: 4px 10px;
  display: inline-block;
  white-space: nowrap;
}
.page-contact .section-heading h2 {
  font-size: clamp(1.6rem, 2.6vw, 2.2rem);
  margin: 0;
}
.page-contact .section-heading p {
  margin: 4px 0 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* ---------- 联系渠道 ---------- */
.page-contact .contact-channels {
  position: relative;
  background: var(--section-alt);
  padding: 56px 0 64px;
}
.page-contact .contact-channels::before,
.page-contact .contact-help::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 14px;
  background: var(--primary-bg);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 70%);
  opacity: 0.9;
  z-index: 2;
  pointer-events: none;
}
.page-contact .channel-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-bottom: 32px;
}
.page-contact .channel-card {
  position: relative;
  background: var(--secondary-bg);
  border: 1px solid var(--border-line);
  padding: 32px 24px 24px;
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 0 100%);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.page-contact .channel-card:hover {
  transform: translateY(-4px);
  border-color: rgba(57, 255, 20, 0.5);
  box-shadow: 0 12px 32px rgba(8, 23, 48, 0.8);
}
.page-contact .channel-mark {
  position: absolute;
  top: 30px;
  right: 14px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--accent-orange);
  border: 1px solid rgba(255, 106, 0, 0.4);
  padding: 2px 8px;
  background: rgba(255, 106, 0, 0.08);
}
.page-contact .channel-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--highlight-bg);
  border: 1px solid rgba(57, 255, 20, 0.35);
  color: var(--accent-green);
  margin-bottom: 16px;
}
.page-contact .channel-icon svg {
  width: 26px;
  height: 26px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.page-contact .channel-card h3 {
  font-size: 1.2rem;
  margin: 0 0 6px;
  color: var(--text-primary);
}
.page-contact .channel-value {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 1rem;
  word-break: break-all;
  color: var(--accent-green);
  margin-bottom: 12px;
}
.page-contact .channel-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 16px;
}
.page-contact .address-card .channel-value {
  color: var(--text-primary);
  word-break: normal;
}
.page-contact .channel-role {
  display: inline-block;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  border: 1px dashed var(--border-line);
  padding: 2px 10px;
}

/* ---------- tech banner ---------- */
.page-contact .tech-banner {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  align-items: center;
  background: var(--secondary-bg);
  border: 1px solid rgba(255, 106, 0, 0.35);
  padding: 28px 24px;
  position: relative;
}
.page-contact .tech-banner::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--accent-orange);
}
.page-contact .tech-icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  border: 1px solid rgba(255, 106, 0, 0.5);
  background: rgba(255, 106, 0, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-orange);
}
.page-contact .tech-icon svg {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.page-contact .tech-copy {
  flex: 1 1 280px;
  min-width: 0;
}
.page-contact .tech-copy h3 {
  font-size: 1.2rem;
  color: var(--accent-orange);
  margin: 0 0 8px;
}
.page-contact .tech-copy p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin: 0;
}
.page-contact .tech-banner img {
  display: block;
  width: 100%;
  max-width: 280px;
  height: auto;
  object-fit: contain;
  border: 1px solid var(--border-line);
  background: rgba(8, 23, 48, 0.5);
  padding: 8px;
  margin: 0 auto;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}

/* ---------- support flow ---------- */
.page-contact .support-flow {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  padding: 48px 0 56px;
}
.page-contact .flow-step {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 20px;
  background: var(--secondary-bg);
  border: 1px solid var(--border-line);
  border-left: 3px solid var(--accent-green);
}
.page-contact .flow-step > span {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent-green);
  line-height: 1;
}
.page-contact .flow-step b {
  display: block;
  font-size: 1.05rem;
  color: var(--text-primary);
}
.page-contact .flow-step small {
  color: var(--text-secondary);
  font-size: 0.88rem;
}

/* ---------- 服务时间 ---------- */
.page-contact .contact-hours {
  padding: 0 0 64px;
}
.page-contact .hours-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}
.page-contact .hours-panel {
  background: var(--secondary-bg);
  border: 1px solid var(--border-line);
  padding: 32px 24px;
  position: relative;
}
.page-contact .hours-panel::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  border-right: 28px solid var(--accent-green);
  border-top: 28px solid transparent;
  opacity: 0.15;
}
.page-contact .hours-list {
  margin: 0;
  padding: 0;
}
.page-contact .hours-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px dashed var(--border-line);
}
.page-contact .hours-item:last-child {
  border-bottom: 0;
}
.page-contact .hours-item dt {
  color: var(--text-secondary);
  font-size: 0.95rem;
}
.page-contact .hours-item dd {
  font-family: var(--font-mono);
  font-weight: 700;
  text-align: right;
  color: var(--text-primary);
  font-size: 1.05rem;
  margin: 0;
}
.page-contact .hours-note {
  padding: 8px 0;
}
.page-contact .hours-note h3 {
  font-size: 1.3rem;
  margin: 0 0 16px;
}
.page-contact .hours-note ul {
  list-style: none;
  padding: 0;
  margin: 0 0 20px;
  display: grid;
  gap: 12px;
}
.page-contact .hours-note li {
  position: relative;
  padding-left: 22px;
  color: var(--text-secondary);
}
.page-contact .hours-note li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 10px;
  height: 2px;
  background: var(--accent-orange);
}
.page-contact .hours-note p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin: 0;
}

/* ---------- 帮助中心 ---------- */
.page-contact .contact-help {
  position: relative;
  background: var(--section-alt);
  padding: 64px 0;
}
.page-contact .help-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: center;
}
.page-contact .help-layout img {
  display: block;
  width: 100%;
  max-width: 280px;
  height: auto;
  object-fit: contain;
  justify-self: center;
  border: 1px solid var(--border-line);
  background: var(--secondary-bg);
  padding: 12px;
}
.page-contact .help-content {
  min-width: 0;
}
.page-contact .help-content > p {
  color: var(--text-secondary);
  font-size: 0.98rem;
  margin: 0 0 20px;
}
.page-contact .help-link-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 24px 0 20px;
}
.page-contact .help-link-grid a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  background: var(--secondary-bg);
  border: 1px solid var(--border-line);
  color: var(--text-primary) !important;
  text-decoration: none !important;
  transition: border-color 0.3s ease, transform 0.3s ease;
}
.page-contact .help-link-grid a:hover {
  border-color: var(--accent-green);
  transform: translateY(-2px);
}
.page-contact .help-link-grid a span {
  font-weight: 700;
}
.page-contact .help-link-grid a small {
  color: var(--text-secondary);
  font-size: 0.85rem;
}
.page-contact .help-link-grid a.help-link-primary {
  grid-column: 1 / -1;
  background: var(--accent-green);
  color: var(--primary-bg) !important;
  box-shadow: 0 4px 0 0 rgba(57, 255, 20, 0.4);
}
.page-contact .help-link-grid a.help-link-primary small {
  color: rgba(10, 31, 68, 0.75);
}
.page-contact .help-tip {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin: 0;
}

/* ---------- 贺兰山轮廓 ---------- */
.page-contact .helan-mountains {
  pointer-events: none;
  line-height: 0;
}
.page-contact .helan-mountains svg {
  display: block;
  width: 100%;
  height: auto;
  max-height: 120px;
}

/* ---------- 桌面端 ---------- */
@media (min-width: 1024px) {
  .page-contact .contact-hero {
    padding: 72px 0 64px;
  }
  .page-contact .hero-stats {
    margin-top: 36px;
  }
  .page-contact .channel-cards {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
  .page-contact .tech-banner {
    padding: 32px 40px;
    flex-wrap: nowrap;
  }
  .page-contact .tech-banner img {
    max-width: 240px;
    flex-shrink: 0;
  }
  .page-contact .support-flow {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    padding-bottom: 64px;
  }
  .page-contact .hours-layout {
    grid-template-columns: 5fr 6fr;
    gap: 48px;
  }
  .page-contact .help-layout {
    grid-template-columns: 1fr 2fr;
    gap: 48px;
  }
  .page-contact .help-layout img {
    max-width: 320px;
  }
  .page-contact .help-link-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-contact .help-link-primary {
    grid-column: 1 / -1;
  }
}