.page-contact {
  --contact-grid-line: rgba(17, 24, 32, 0.05);
  --contact-gold-soft: rgba(212, 175, 55, 0.16);
  --contact-teal-soft: rgba(0, 229, 160, 0.12);
  --contact-purple-soft: rgba(123, 91, 255, 0.1);
  --contact-white-soft: rgba(255, 255, 255, 0.08);
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-sans);
  line-height: 1.8;
  overflow-x: hidden;
}

/* ===== 页头区域 ===== */
.contact-hero {
  position: relative;
  background: linear-gradient(130deg, var(--color-pitch) 0%, var(--color-pitch-dark) 75%, #0d2019 100%);
  padding: calc(var(--space-xl) + var(--space-md)) 0 0;
  color: #ffffff;
  isolation: isolate;
}

.contact-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 38%;
  height: 100%;
  background:
    repeating-linear-gradient(90deg, rgba(255,255,255,0.045) 0 1px, transparent 1px 44px),
    repeating-linear-gradient(0deg, rgba(255,255,255,0.045) 0 1px, transparent 1px 44px);
  clip-path: polygon(18% 0, 100% 0, 100% 100%, 0% 100%);
  z-index: -1;
}

.contact-hero::after {
  content: "DATA DESK / BEIJING";
  position: absolute;
  top: 18px;
  right: -34px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: rgba(255, 255, 255, 0.22);
  transform: rotate(90deg);
  transform-origin: center;
  z-index: 1;
  pointer-events: none;
}

.contact-hero .container {
  position: relative;
  z-index: 2;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.contact-hero .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
  font-size: 0.875rem;
  letter-spacing: 0.05em;
}

.contact-hero .breadcrumb a {
  color: rgba(255, 255, 255, 0.72);
  text-decoration: none;
  transition: color var(--transition-fast);
  border-bottom: 1px solid transparent;
}

.contact-hero .breadcrumb a:hover {
  color: var(--color-gold);
  border-bottom-color: currentColor;
}

.contact-hero .breadcrumb .breadcrumb-item:last-child {
  color: var(--color-gold);
  font-weight: 700;
}

.contact-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  align-items: end;
}

.contact-hero-copy {
  max-width: 820px;
}

.contact-kicker {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  margin: 0 0 var(--space-md);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-gold);
}

.contact-kicker::before {
  content: "";
  display: inline-block;
  width: 30px;
  height: 3px;
  background: var(--color-gold);
}

.contact-hero h1 {
  margin: 0 0 var(--space-lg);
  max-width: 15em;
  font-size: clamp(1.7rem, 4.2vw, 2.8rem);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: -0.015em;
}

.contact-lead {
  margin: 0 0 var(--space-xl);
  max-width: 660px;
  font-size: 1.0625rem;
  color: rgba(255, 255, 255, 0.78);
}

.contact-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm) var(--space-xl);
  padding: var(--space-md) 0;
  border-top: 2px solid rgba(255, 255, 255, 0.16);
  border-bottom: 2px solid rgba(255, 255, 255, 0.16);
}

.contact-meta-item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.84);
}

.contact-meta-item::before {
  content: "●";
  color: var(--color-teal);
  font-size: 0.6rem;
  line-height: 1;
}

.contact-hero-figure {
  margin: 0;
  position: relative;
  background: var(--color-paper);
  border: var(--border-medium) solid rgba(255, 255, 255, 0.3);
  box-shadow: 12px 12px 0 rgba(0, 0, 0, 0.2);
}

.contact-hero-figure img,
.contact-map-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.contact-fig-caption {
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-ink);
  border-top: var(--border-medium) solid var(--color-ink);
  background: var(--color-paper);
}

/* ===== 官方联系方式 ===== */
.contact-channels {
  position: relative;
  padding: var(--space-2xl) 0;
  background:
    linear-gradient(var(--contact-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--contact-grid-line) 1px, transparent 1px);
  background-size: 28px 28px;
}

.contact-section-head {
  max-width: 760px;
  margin-bottom: var(--space-xl);
}

.contact-section-head .label-note {
  display: block;
  margin-bottom: var(--space-sm);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-pitch);
}

.contact-section-head h2 {
  margin: 0 0 var(--space-md);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 900;
  line-height: 1.3;
  position: relative;
  padding-left: var(--space-md);
}

.contact-section-head h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 6px;
  height: 1.2em;
  background: var(--color-gold);
  transform: skewY(-30deg);
}

.contact-section-head p {
  color: var(--color-charcoal);
  font-size: 0.95rem;
}

.contact-channels-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.contact-channel-card {
  position: relative;
  background: var(--color-paper);
  border: var(--border-thick) solid var(--color-ink);
  box-shadow: var(--shadow-brutal);
  padding: calc(var(--space-xl) + var(--space-sm)) var(--space-lg) var(--space-lg);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.contact-channel-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: 10px 10px 0 rgba(17, 24, 32, 0.24);
}

.contact-card-mail {
  background: var(--color-paper);
  border-color: var(--color-ink);
}

.contact-card-phone {
  background: var(--color-bg);
  border-color: var(--color-ink);
}

.contact-card-address {
  background: #fafaf6;
  border-color: var(--color-ink);
}

.channel-card-accent {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 8px;
  background: linear-gradient(90deg, var(--color-gold) 0%, var(--color-gold) 38%, transparent 38%);
}

.channel-serial {
  display: block;
  margin-bottom: var(--space-md);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--color-mist);
}

.channel-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 68px;
  height: 68px;
  margin-bottom: var(--space-md);
  color: var(--color-pitch);
  background: var(--color-bg);
  border: var(--border-medium) solid var(--color-ink);
  box-shadow: 4px 4px 0 rgba(17, 24, 32, 0.14);
}

.contact-card-phone .channel-icon {
  color: var(--color-teal);
  background: #ffffff;
  border-color: var(--color-ink);
}

.contact-card-address .channel-icon {
  color: var(--color-purple);
  background: var(--color-bg);
  border-color: var(--color-ink);
}

.channel-icon svg {
  width: 34px;
  height: 34px;
}

.contact-channel-card h3 {
  margin: 0 0 var(--space-sm);
  font-size: 1.3rem;
  font-weight: 900;
}

.contact-channel-card p {
  margin: 0 0 var(--space-md);
  font-size: 0.95rem;
  color: var(--color-charcoal);
}

.channel-link {
  display: inline-block;
  margin: var(--space-sm) 0;
  font-family: var(--font-mono);
  font-size: clamp(1rem, 2.4vw, 1.25rem);
  font-weight: 700;
  color: var(--color-pitch);
  text-decoration: none;
  border-bottom: 3px solid var(--color-gold);
  padding-bottom: 2px;
  word-break: break-all;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.channel-link:hover {
  color: var(--color-ink);
  border-color: var(--color-teal);
}

.channel-note {
  display: block;
  font-size: 0.8rem;
  color: var(--color-mist);
  font-style: italic;
}

.address-note {
  font-size: 0.85rem !important;
  padding: var(--space-sm) var(--space-md);
  background: var(--color-purple-soft);
  border-left: 4px solid var(--color-purple);
  color: var(--color-charcoal) !important;
}

.contact-map-figure {
  margin: var(--space-lg) 0 0;
  border: var(--border-medium) solid var(--color-ink);
  background:
    linear-gradient(var(--contact-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--contact-grid-line) 1px, transparent 1px);
  background-size: 24px 24px;
  background-color: var(--color-paper);
  position: relative;
}

.contact-map-figure::before {
  content: "◆ 工体北路8号院";
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 1;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 4px 10px;
  background: var(--color-gold);
  color: var(--color-ink);
  border: 2px solid var(--color-ink);
}

/* ===== 商务合作与数据服务 ===== */
.contact-business {
  padding: var(--space-2xl) 0;
  background: var(--color-pitch);
  color: #ffffff;
  position: relative;
  overflow: hidden;
}

.contact-business::before {
  content: "";
  position: absolute;
  right: -80px;
  top: -80px;
  width: 280px;
  height: 280px;
  border: 3px solid rgba(212, 175, 55, 0.22);
  border-radius: 50%;
  pointer-events: none;
}

.contact-two-col {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

.contact-col-left .label-note {
  display: block;
  margin-bottom: var(--space-sm);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-gold);
}

.contact-col-left h2 {
  margin: 0 0 var(--space-md);
  font-size: clamp(1.4rem, 2.8vw, 2rem);
  font-weight: 900;
  line-height: 1.3;
}

.contact-col-left > p {
  max-width: 520px;
  font-size: 0.975rem;
  color: rgba(255, 255, 255, 0.78);
}

.contact-col-right {
  background: rgba(255, 255, 255, 0.05);
  border: 2px solid rgba(255, 255, 255, 0.16);
  padding: var(--space-lg);
  backdrop-filter: none;
}

.contact-list {
  list-style: none;
  margin: 0 0 var(--space-lg);
  padding: 0;
}

.contact-list li {
  padding: var(--space-md) 0;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.2);
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.85);
  display: flex;
  gap: var(--space-sm);
}

.contact-list li::before {
  content: "▪";
  color: var(--color-gold);
  flex-shrink: 0;
}

.contact-list li:last-child {
  border-bottom: none;
}

.contact-list strong {
  color: var(--color-gold);
  font-weight: 700;
}

.business-contact-note {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: var(--space-md);
  background: var(--contact-gold-soft);
  border-left: 4px solid var(--color-gold);
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.78);
}

.note-mark {
  color: var(--color-gold);
  font-size: 0.8rem;
  margin-top: 4px;
}

/* ===== 产品反馈与帮助 ===== */
.contact-feedback {
  padding: var(--space-2xl) 0;
}

.contact-feedback-panel {
  background: var(--color-bg);
  border: var(--border-thick) solid var(--color-ink);
  box-shadow: 10px 10px 0 rgba(17, 24, 32, 0.2);
  padding: var(--space-xl) var(--space-lg);
  position: relative;
}

.contact-feedback-panel::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 96px;
  height: 96px;
  background:
    repeating-linear-gradient(45deg, var(--contact-teal-soft) 0 8px, transparent 8px 16px);
  border-bottom: 2px solid var(--color-teal);
  pointer-events: none;
}

.contact-feedback-header {
  max-width: 720px;
  margin-bottom: var(--space-xl);
}

.contact-feedback-header .label-note {
  display: block;
  margin-bottom: var(--space-sm);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-purple);
}

.contact-feedback-header h2 {
  margin: 0 0 var(--space-md);
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  font-weight: 900;
}

.contact-feedback-header p {
  color: var(--color-charcoal);
  font-size: 0.95rem;
}

.contact-feedback-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.feedback-item {
  background: var(--color-bg);
  border: var(--border-medium) solid var(--color-ink);
  box-shadow: 4px 4px 0 rgba(17, 24, 32, 0.12);
  padding: var(--space-lg);
  position: relative;
  transition: transform var(--transition-fast);
}

.feedback-item:hover {
  transform: translateX(4px);
}

.feedback-index {
  display: inline-block;
  margin-bottom: var(--space-sm);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-purple);
  background: var(--color-purple-soft);
  padding: 2px 8px;
  border: 1px solid rgba(123, 91, 255, 0.3);
}

.feedback-item h3 {
  margin: 0 0 var(--space-sm);
  font-size: 1.1rem;
  font-weight: 900;
}

.feedback-item p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--color-charcoal);
}

.feedback-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-top: var(--space-md);
}

.feedback-actions .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 var(--space-lg);
  font-size: 0.9rem;
  font-weight: 700;
  border: var(--border-medium) solid var(--color-ink);
  color: var(--color-ink);
  background: var(--color-bg);
  text-decoration: none;
  box-shadow: 4px 4px 0 rgba(17, 24, 32, 0.16);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

.feedback-actions .btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 rgba(17, 24, 32, 0.2);
}

.feedback-actions .btn-gold {
  background: var(--color-gold);
  color: var(--color-ink);
  border-color: var(--color-ink);
}

.feedback-actions .btn-gold:hover {
  background: var(--color-gold-deep);
}

/* ===== 工作时间与回复节奏 ===== */
.contact-schedule {
  padding: var(--space-2xl) 0;
  background: var(--color-charcoal);
  color: #ffffff;
}

.contact-schedule-head {
  margin-bottom: var(--space-xl);
}

.contact-schedule-head .label-note {
  color: var(--color-teal) !important;
}

.contact-schedule-head h2 {
  color: #ffffff;
}

.contact-schedule-head h2::before {
  background: var(--color-teal);
}

.contact-schedule-head p {
  color: rgba(255, 255, 255, 0.7);
}

.schedule-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

.schedule-card {
  padding: var(--space-lg);
  background: rgba(255, 255, 255, 0.05);
  border: var(--border-medium) solid rgba(255, 255, 255, 0.24);
  position: relative;
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.schedule-card:hover {
  border-color: var(--color-gold);
  transform: translateY(-3px);
}

.schedule-label {
  display: block;
  margin-bottom: var(--space-sm);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-teal);
}

.schedule-card strong {
  display: block;
  margin-bottom: var(--space-sm);
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--color-gold);
}

.schedule-card p {
  margin: 0;
  font-size: 0.885rem;
  color: rgba(255, 255, 255, 0.72);
}

.schedule-card-note {
  background: var(--color-gold);
  border-color: var(--color-gold);
}

.schedule-card-note strong {
  color: var(--color-ink);
}

.schedule-card-note p {
  color: var(--color-ink);
}

.schedule-card-note .schedule-label {
  color: var(--color-pitch);
}

/* ===== 其他入口 ===== */
.contact-other {
  padding: var(--space-2xl) 0 60px;
}

.contact-other-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

.contact-other-card {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto auto auto;
  gap: var(--space-xs) var(--space-md);
  padding: var(--space-lg);
  background: #ffffff;
  border: var(--border-medium) solid var(--color-ink);
  box-shadow: var(--shadow-brutal);
  color: var(--color-ink);
  text-decoration: none;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

.contact-other-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: 8px 8px 0 rgba(17, 24, 32, 0.22);
  background: rgba(0, 229, 160, 0.04);
}

.other-card-index {
  grid-column: 1;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-purple);
  letter-spacing: 0.08em;
}

.contact-other-card h3 {
  grid-column: 1;
  margin: 0;
  font-size: 1.1rem;
  font-weight: 900;
}

.contact-other-card p {
  grid-column: 1;
  margin: 0;
  font-size: 0.885rem;
  color: var(--color-charcoal);
  line-height: 1.7;
}

.other-card-arrow {
  grid-row: 1 / 4;
  grid-column: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  font-size: 1.4rem;
  color: var(--color-gold);
  border-left: 2px solid var(--color-ink);
  transition: transform var(--transition-fast), color var(--transition-fast);
}

.contact-other-card:hover .other-card-arrow {
  transform: translateX(4px);
  color: var(--color-teal);
}

/* ===== 响应式布局 ===== */
@media (min-width: 768px) {
  .contact-hero {
    padding-top: calc(var(--space-2xl) + var(--space-md));
  }

  .contact-hero-grid {
    grid-template-columns: 7fr 5fr;
    gap: var(--space-2xl);
  }

  .contact-channels-grid {
    grid-template-columns: 7fr 5fr;
    align-items: start;
  }

  .contact-card-mail {
    grid-row: span 2;
  }

  .contact-card-address {
    grid-column: 2;
  }

  .contact-map-figure {
    margin-top: var(--space-md);
  }

  .contact-two-col {
    grid-template-columns: 5fr 7fr;
    gap: var(--space-2xl);
  }

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

  .schedule-cards {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (min-width: 1024px) {
  .contact-channels-grid {
    grid-template-columns: 8fr 5fr;
  }

  .contact-channel-card {
    padding-left: var(--space-xl);
    padding-right: var(--space-xl);
  }

  .contact-card-address {
    grid-column: 2;
  }

  .contact-feedback-panel {
    padding: var(--space-2xl);
  }

  .schedule-cards {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 1280px) {
  .contact-channels-grid {
    grid-template-columns: 7fr 3fr 5fr;
  }

  .contact-card-mail {
    grid-row: span 1;
    grid-column: 1;
  }

  .contact-card-phone {
    grid-column: 2;
    grid-row: 1;
  }

  .contact-card-address {
    grid-column: 3;
    grid-row: 1;
  }

  .contact-map-figure {
    margin-top: var(--space-lg);
  }

  .contact-feedback-grid {
    gap: var(--space-lg);
  }
}

@media (max-width: 767px) {
  .contact-hero::after {
    display: none;
  }

  .contact-channel-card {
    padding-top: var(--space-xl);
  }

  .contact-channel-card,
  .contact-feedback-panel,
  .contact-col-right,
  .schedule-card {
    border-width: var(--border-medium);
  }

  .channel-icon {
    width: 56px;
    height: 56px;
  }

  .channel-icon svg {
    width: 28px;
    height: 28px;
  }

  .channel-link {
    font-size: 1.05rem;
  }

  .contact-hero-figure {
    box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.22);
  }

  .contact-other-card {
    padding: var(--space-md);
  }
}

.page-contact {
  --color-purple-soft: transparent;
}