.page-contact {
  position: relative;
}

/* ===== 面包屑 ===== */
.page-contact .crumb-link {
  color: var(--txt-mute);
  text-decoration: none;
  transition: color 0.2s ease;
}

.page-contact .crumb-link:hover {
  color: var(--accent-green);
}

/* ===== 首屏 Hero ===== */
.page-contact .contact-hero {
  padding: var(--space-lg) 0 var(--space-md);
  border-bottom: 1px solid var(--border-thin);
  position: relative;
  overflow: hidden;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  right: -80px;
  top: -80px;
  width: 340px;
  height: 340px;
  background: radial-gradient(circle, rgba(0, 230, 118, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  right: 90px;
  top: 0;
  width: 1px;
  height: 160px;
  background: linear-gradient(to bottom, var(--accent-green), transparent);
  opacity: 0.4;
  pointer-events: none;
}

.page-contact .contact-hero-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  position: relative;
  z-index: 1;
}

.page-contact .page-hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  line-height: 1.05;
  letter-spacing: 0.02em;
  margin: 0;
  color: var(--txt-strong);
}

.page-contact .hero-dot {
  color: var(--accent-green);
}

.page-contact .page-hero-subtitle {
  max-width: 52rem;
  color: var(--txt-body);
  font-size: 1.05rem;
  line-height: 1.75;
  margin: 0;
}

.page-contact .contact-hero-meta {
  display: flex;
  gap: var(--space-xs);
  flex-wrap: wrap;
}

.page-contact .contact-hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--border-thin);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 0.85rem;
  color: var(--txt-body);
  background: rgba(255, 255, 255, 0.02);
}

.page-contact .contact-hero-tag--blue {
  border-color: var(--border-blue);
  color: var(--accent-blue);
}

.page-contact .contact-hero-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-green);
  animation: contactPulse 2s ease-in-out infinite;
}

.page-contact .contact-hero-tag--blue .contact-hero-dot {
  background: var(--accent-blue);
}

@keyframes contactPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.45; transform: scale(0.7); }
}

/* ===== 章节通用 ===== */
.page-contact .contact-section {
  padding-top: var(--space-xl);
  padding-bottom: 0;
}

.page-contact .section-heading {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  margin-bottom: var(--space-lg);
}

.page-contact .section-number {
  font-family: var(--font-display);
  font-size: clamp(3rem, 7vw, 4.8rem);
  line-height: 0.85;
  color: rgba(0, 230, 118, 0.16);
  -webkit-text-stroke: 1px var(--accent-green);
  letter-spacing: -0.04em;
}

.page-contact .section-heading.c-blue .section-number {
  color: rgba(0, 176, 255, 0.14);
  -webkit-text-stroke: 1px var(--accent-blue);
}

.page-contact .section-titles {
  padding-top: 6px;
}

.page-contact .section-title {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3.5vw, 2.2rem);
  color: var(--txt-strong);
  margin: 0 0 4px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.page-contact .section-subtitle {
  font-size: 0.92rem;
  color: var(--txt-mute);
  margin: 0;
}

/* ===== 联系卡片基础 ===== */
.page-contact .contact-card {
  background: var(--bg-01);
  border: 1px solid var(--border-thin);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  padding: var(--space-md);
  position: relative;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.page-contact .contact-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
  border-color: rgba(0, 230, 118, 0.3);
}

.page-contact .contact-card-title {
  font-family: var(--font-display);
  font-size: 1.12rem;
  color: var(--txt-strong);
  margin: 0 0 14px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.page-contact .contact-card-note {
  font-size: 0.88rem;
  color: var(--txt-mute);
  line-height: 1.7;
  margin: 0;
}

.page-contact .contact-card-note a {
  color: var(--accent-green);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ===== 01 客服支持 ===== */
.page-contact .contact-support-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.page-contact .contact-card--support {
  padding: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  background: var(--bg-01);
  border-left: 3px solid var(--accent-green);
}

.page-contact .contact-card-media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 5 / 3;
  background: var(--bg-02);
}

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

.page-contact .contact-card-body {
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
  align-items: flex-start;
}

.page-contact .contact-mail-btn {
  align-self: flex-start;
  font-size: 0.92rem;
  word-break: break-all;
  max-width: 100%;
}

.page-contact .contact-support-side {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.page-contact .contact-card--scope,
.page-contact .contact-card--time {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-contact .contact-scope-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-contact .contact-scope-list li {
  position: relative;
  padding-left: 22px;
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--txt-body);
}

.page-contact .contact-scope-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 8px;
  background: var(--accent-green);
  transform: rotate(45deg);
}

.page-contact .contact-scope-follow {
  margin-top: auto;
  padding-top: 4px;
}

.page-contact .contact-time-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 13px 0;
  border-bottom: 1px solid var(--border-thin);
}

.page-contact .contact-time-row:first-of-type {
  border-top: 1px solid var(--border-thin);
}

.page-contact .contact-time-label {
  font-size: 0.9rem;
  color: var(--txt-body);
}

.page-contact .contact-time-value {
  font-family: var(--font-display);
  font-size: 1.02rem;
  color: var(--accent-green);
}

.page-contact .contact-time-note {
  margin-top: 4px;
}

/* ===== 02 商务合作 ===== */
.page-contact .contact-business-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.page-contact .contact-business-intro {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.page-contact .contact-business-copy {
  margin: 0;
  font-size: 1.02rem;
  line-height: 1.85;
  color: var(--txt-body);
  max-width: 38rem;
}

.page-contact .contact-coop-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-contact .contact-card--business {
  background: linear-gradient(135deg, var(--bg-01) 0%, var(--bg-02) 100%);
  border-color: rgba(0, 176, 255, 0.25);
  padding: var(--space-lg) var(--space-md);
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: flex-start;
  overflow: hidden;
}

.page-contact .contact-card--business:hover {
  border-color: rgba(0, 176, 255, 0.4);
}

.page-contact .contact-biz-badge {
  position: absolute;
  top: 10px;
  right: 14px;
  font-family: var(--font-display);
  font-size: 3rem;
  line-height: 1;
  color: rgba(0, 176, 255, 0.14);
  pointer-events: none;
}

.page-contact .contact-mail-btn--ghost {
  align-self: flex-start;
  color: var(--accent-blue);
  border-color: var(--border-blue);
  word-break: break-all;
  max-width: 100%;
}

.page-contact .contact-mail-btn--ghost:hover {
  background: rgba(0, 176, 255, 0.08);
  color: var(--accent-blue);
  border-color: var(--accent-blue);
}

/* ===== 03 来访地址 ===== */
.page-contact .contact-address-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.page-contact .contact-address-media {
  overflow: hidden;
  border: 1px solid var(--border-blue);
  border-radius: var(--radius);
  background: var(--bg-01);
  aspect-ratio: 2 / 1;
}

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

.page-contact .contact-address-info {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.page-contact .contact-address-line {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.page-contact .contact-address-pin {
  flex: 0 0 auto;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent-green);
  box-shadow: 0 0 0 4px rgba(0, 230, 118, 0.15);
  margin-top: 5px;
}

.page-contact .contact-address-pin--blue {
  background: var(--accent-blue);
  box-shadow: 0 0 0 4px rgba(0, 176, 255, 0.15);
}

.page-contact .contact-address-text {
  font-size: 1rem;
  line-height: 1.65;
  color: var(--txt-strong);
  margin: 0;
}

.page-contact .contact-address-note {
  font-size: 0.88rem;
  color: var(--txt-mute);
  line-height: 1.7;
  margin: 0;
}

.page-contact .contact-route-details {
  border: 1px solid var(--border-thin);
  border-radius: var(--radius);
  background: var(--bg-01);
  transition: border-color 0.3s ease;
  margin-top: 4px;
}

.page-contact .contact-route-details[open] {
  border-color: var(--border-blue);
}

.page-contact .contact-route-summary {
  cursor: pointer;
  padding: 16px 18px;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--accent-blue);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  user-select: none;
}

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

.page-contact .contact-route-summary::after {
  content: "+";
  font-size: 1.4rem;
  line-height: 1;
  color: var(--accent-blue);
  transition: transform 0.25s ease;
}

.page-contact .contact-route-details[open] .contact-route-summary::after {
  transform: rotate(45deg);
}

.page-contact .contact-route-body {
  padding: 0 18px 18px;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--txt-body);
}

.page-contact .contact-route-body p {
  margin: 0 0 10px;
}

.page-contact .contact-route-body p:last-child {
  margin: 0;
}

/* ===== 04 回复时效 ===== */
.page-contact .contact-timeline {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.page-contact .contact-timeline-item {
  padding: var(--space-md);
  background: var(--bg-01);
  border: 1px solid var(--border-thin);
  border-left: 2px solid var(--accent-blue);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.page-contact .contact-timeline-item:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-soft);
  border-color: rgba(0, 176, 255, 0.4);
}

.page-contact .contact-timeline-num {
  font-family: var(--font-display);
  font-size: 2.4rem;
  line-height: 1;
  color: var(--accent-blue);
  display: block;
  margin-bottom: 14px;
}

.page-contact .contact-timeline-title {
  font-size: 1.05rem;
  color: var(--txt-strong);
  margin: 0 0 8px;
}

.page-contact .contact-timeline-text {
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--txt-body);
  margin: 0;
}

.page-contact .contact-timeline-text a {
  color: var(--accent-green);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ===== 底部跳转 ===== */
.page-contact .contact-jump-panel {
  background: var(--bg-01);
  border: 1px solid var(--border-thin);
  border-radius: var(--radius);
  padding: var(--space-lg) var(--space-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-contact .contact-jump-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-green), var(--accent-blue));
}

.page-contact .contact-jump-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--txt-strong);
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.page-contact .contact-jump-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

/* ===== 动效降级 ===== */
@media (prefers-reduced-motion: reduce) {
  .page-contact *,
  .page-contact *::before,
  .page-contact *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .page-contact .contact-card:hover,
  .page-contact .contact-timeline-item:hover {
    transform: none;
  }
}

/* ===== 桌面端布局 ===== */
@media (min-width: 900px) {
  .page-contact .contact-hero {
    padding-top: 120px;
    padding-bottom: var(--space-lg);
  }

  .page-contact .contact-section {
    padding-top: 140px;
  }

  .page-contact .contact-support-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--space-lg);
    align-items: stretch;
  }

  .page-contact .contact-card--support {
    grid-column: span 6;
    min-height: 100%;
  }

  .page-contact .contact-support-side {
    grid-column: span 6;
    display: grid;
    grid-template-rows: 1fr auto;
    gap: var(--space-lg);
  }

  .page-contact .contact-card--scope {
    align-content: start;
  }

  .page-contact .contact-business-grid {
    display: grid;
    grid-template-columns: 7fr 5fr;
    gap: var(--space-lg);
    align-items: center;
  }

  .page-contact .contact-address-grid {
    display: grid;
    grid-template-columns: 7fr 5fr;
    gap: var(--space-lg);
    align-items: center;
  }

  .page-contact .contact-timeline {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
  }

  .page-contact .contact-timeline-item {
    border-left: none;
    border-top: 2px solid var(--accent-blue);
  }

  .page-contact .contact-jump-panel {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
    padding: var(--space-md) var(--space-lg);
  }
}