.page-contact {
  --contact-bg: var(--color-bg, #0B0D17);
  --contact-card-bg: var(--color-surface, #1A1F2E);
  --contact-accent: var(--color-accent, #00E5FF);
  --contact-accent-dim: rgba(0, 229, 255, 0.15);
  --contact-text-primary: var(--color-text-primary, #F0F4F8);
  --contact-text-secondary: var(--color-text-secondary, #9AA3B5);
  --contact-border: var(--color-border, #2D354A);
  --contact-font-heading: var(--font-heading, 'Exo 2', 'Orbitron', sans-serif);
  --contact-font-body: var(--font-body, 'Inter', system-ui, sans-serif);
  --contact-max-content: 1320px;
  --contact-gap: 2rem;

  display: block;
  max-width: var(--contact-max-content);
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem;
  background-color: var(--contact-bg);
  color: var(--contact-text-primary);
  font-family: var(--contact-font-body);
}

/* breadcrumb */
.contact-breadcrumb {
  font-size: 0.82rem;
  color: var(--contact-text-secondary);
  margin-bottom: 1.8rem;
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.contact-breadcrumb a {
  color: var(--contact-accent);
  text-decoration: none;
  transition: opacity 0.25s;
}
.contact-breadcrumb a:hover {
  opacity: 0.7;
}

/* layout wrapper */
.contact-wrapper {
  display: flex;
  flex-direction: column-reverse;
  gap: 2.5rem;
}

/* info side */
.contact-info-side {
  flex: 1 1 100%;
}

.contact-main-heading {
  font-family: var(--contact-font-heading);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--contact-text-primary);
  margin: 0 0 0.5rem;
  line-height: 1.1;
}

.contact-subtitle {
  font-size: 1rem;
  color: var(--contact-text-secondary);
  margin: 0 0 2.2rem;
  line-height: 1.6;
  max-width: 36em;
}

/* channel list */
.contact-channel-list {
  display: flex;
  flex-direction: column;
  gap: 1.3rem;
  margin-bottom: 2.5rem;
}

.contact-channel-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  background: var(--contact-card-bg);
  padding: 1.2rem 1.4rem;
  border-radius: 1rem;
  border: 1px solid var(--contact-border);
  transition: border-color 0.3s, box-shadow 0.3s;
  cursor: default;
}
.contact-channel-item:hover {
  border-color: var(--contact-accent);
  box-shadow: 0 0 0 2px var(--contact-accent-dim);
}

.contact-icon {
  flex: 0 0 auto;
  color: var(--contact-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 0.75rem;
  background: var(--contact-accent-dim);
  transition: background 0.3s, transform 0.2s;
}
.contact-channel-item:hover .contact-icon {
  background: rgba(0, 229, 255, 0.25);
  transform: scale(1.05);
}
.contact-icon svg {
  display: block;
}

.contact-channel-text {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.contact-channel-label {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--contact-text-secondary);
}

.contact-channel-value {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--contact-accent);
  text-decoration: none;
  word-break: break-all;
}
.contact-channel-value:hover {
  text-decoration: underline;
}

.contact-channel-hint {
  font-size: 0.75rem;
  color: var(--contact-text-secondary);
  opacity: 0.7;
}

/* address block */
.contact-address-block {
  margin-bottom: 2.2rem;
  padding: 1.4rem;
  background: var(--contact-card-bg);
  border-radius: 1rem;
  border: 1px solid var(--contact-border);
}

.contact-section-title {
  font-family: var(--contact-font-heading);
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--contact-text-primary);
  margin: 0 0 0.8rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid var(--contact-accent-dim);
  display: inline-block;
}

.contact-address-text {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 1rem;
  line-height: 1.5;
  color: var(--contact-text-primary);
  margin-bottom: 1.2rem;
}
.contact-address-text .contact-icon {
  width: 1.8rem;
  height: 1.8rem;
  background: transparent;
}
.contact-address-text .contact-icon svg {
  width: 1.3rem;
  height: 1.3rem;
}

.contact-map-placeholder {
  display: block;
  width: 100%;
  max-width: 400px;
  height: auto;
  border-radius: 0.75rem;
  border: 1px solid var(--contact-border);
  object-fit: cover;
  background: var(--contact-card-bg);
}

/* notice */
.contact-notice {
  padding: 1.4rem;
  background: var(--contact-card-bg);
  border-radius: 1rem;
  border-left: 4px solid var(--contact-accent);
}

.contact-notice-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}
.contact-notice-list li {
  position: relative;
  padding-left: 1.2rem;
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--contact-text-secondary);
}
.contact-notice-list li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--contact-accent);
  font-weight: 700;
}
.contact-notice-list a {
  color: var(--contact-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.contact-notice-list a:hover {
  opacity: 0.8;
}

/* visual side */
.contact-visual-side {
  flex: 0 0 auto;
  position: relative;
  border-radius: 1.2rem;
  overflow: hidden;
  aspect-ratio: 500 / 600;
  max-height: 600px;
  background: var(--contact-card-bg);
  border: 1px solid var(--contact-border);
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-visual-bg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.contact-visual-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.08) 0%, transparent 60%);
  pointer-events: none;
}

/* desktop layout */
@media (min-width: 768px) {
  .page-contact {
    padding: 2rem 2rem 4rem;
  }

  .contact-wrapper {
    flex-direction: row;
    gap: 3.5rem;
    align-items: flex-start;
  }

  .contact-info-side {
    flex: 1 1 55%;
  }

  .contact-visual-side {
    flex: 0 0 40%;
    position: sticky;
    top: 2rem;
    max-height: 600px;
  }

  .contact-channel-item {
    padding: 1.4rem 1.8rem;
  }

  .contact-channel-value {
    font-size: 1.2rem;
  }
}

@media (min-width: 1024px) {
  .page-contact {
    padding: 2.5rem 3rem 5rem;
  }

  .contact-info-side {
    flex: 1 1 60%;
  }

  .contact-visual-side {
    flex: 0 0 35%;
  }
}