.page-contact {
  overflow-x: hidden;
  padding: 0;
}

.page-contact > section {
  width: min(100%, var(--container-width));
  margin-inline: auto;
  padding-inline: 24px;
}

.page-contact .section-index {
  display: block;
  letter-spacing: 0.08em;
  color: var(--color-muted);
}

.page-contact .section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  line-height: 1.2;
  color: var(--color-text);
}

.page-contact .display-heading {
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 0.5rem;
  color: var(--color-text);
  overflow-wrap: break-word;
}

.page-contact .page-intro {
  font-size: clamp(1.125rem, 2.4vw, 1.5rem);
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: 1.25rem;
}

.page-contact .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
  font-size: 0.875rem;
  color: var(--color-muted);
}

.page-contact .breadcrumb a {
  color: var(--color-muted);
  text-decoration: none;
  transition: color 0.25s ease;
}

.page-contact .breadcrumb a:hover {
  color: var(--color-accent);
}

.page-contact .breadcrumb-current {
  color: var(--color-data);
}

.page-contact .breadcrumb-sep {
  color: rgba(136, 146, 176, 0.5);
}

.page-contact .btn-primary {
  text-decoration: none;
}

/* ===== Hero ===== */
.page-contact .contact-hero {
  padding-top: 3.5rem;
  padding-bottom: 3rem;
}

.page-contact .contact-hero .section-index {
  margin-bottom: 0.875rem;
}

.contact-hero-grid {
  display: grid;
  gap: 2.5rem;
}

.contact-hero-copy {
  position: relative;
  z-index: 1;
}

.hero-description {
  color: var(--color-muted);
  font-size: 1rem;
  line-height: 1.8;
  max-width: 46ch;
  margin-bottom: 1.5rem;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 1rem;
  border-radius: var(--radius-pill);
  background: rgba(0, 201, 167, 0.08);
  border: 1px solid rgba(0, 201, 167, 0.22);
  color: var(--color-data);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.02em;
}

/* Hero visual */
.contact-hero-visual {
  position: relative;
  min-height: 280px;
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 70% 30%, rgba(0, 201, 167, 0.12), transparent 55%),
    radial-gradient(circle at 20% 80%, rgba(255, 107, 53, 0.1), transparent 50%),
    var(--color-bg-panel);
  border: 1px solid var(--color-border);
  overflow: hidden;
}

.contact-hero-visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 201, 167, 0.14) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 201, 167, 0.14) 1px, transparent 1px);
  background-size: 34px 34px;
  -webkit-mask-image: radial-gradient(ellipse at center, #000 20%, transparent 75%);
  mask-image: radial-gradient(ellipse at center, #000 20%, transparent 75%);
}

.contact-hero-visual::after {
  content: "";
  position: absolute;
  inset: 14%;
  border-radius: 50%;
  border: 1px dashed rgba(0, 201, 167, 0.3);
  animation: contact-orbit 22s linear infinite;
}

.hero-node {
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 6px rgba(255, 107, 53, 0.12);
  z-index: 1;
}

.hero-node::after {
  content: "";
  position: absolute;
  inset: -9px;
  border-radius: 50%;
  border: 1px solid rgba(255, 107, 53, 0.45);
  animation: contact-pulse 2.4s ease-out infinite;
}

.hero-node.node-a {
  top: 24%;
  left: 20%;
}

.hero-node.node-b {
  top: 62%;
  left: 66%;
  background: var(--color-data);
  box-shadow: 0 0 0 6px rgba(0, 201, 167, 0.14);
}

.hero-node.node-b::after {
  border-color: rgba(0, 201, 167, 0.45);
}

.hero-node.node-c {
  top: 16%;
  right: 14%;
  background: var(--color-warning);
  box-shadow: 0 0 0 6px rgba(245, 158, 11, 0.12);
}

.hero-node.node-c::after {
  border-color: rgba(245, 158, 11, 0.45);
}

@keyframes contact-orbit {
  to {
    transform: rotate(360deg);
  }
}

@keyframes contact-pulse {
  0% {
    transform: scale(0.6);
    opacity: 0.9;
  }
  100% {
    transform: scale(1.7);
    opacity: 0;
  }
}

/* ===== Channels ===== */
.page-contact .contact-channels {
  padding-top: 1.5rem;
  padding-bottom: 4rem;
}

.channel-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem 1.25rem;
  margin-bottom: 2rem;
}

.page-contact .channel-head .section-title {
  margin: 0;
}

.page-contact .channel-head .section-index {
  font-size: 0.875rem;
}

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

.channel-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.75rem 1.5rem;
  background: linear-gradient(145deg, rgba(17, 34, 64, 0.92), rgba(10, 25, 47, 0.96));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.channel-card:hover {
  border-color: rgba(0, 201, 167, 0.4);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
}

.channel-card-featured {
  border-color: rgba(255, 107, 53, 0.35);
  background: linear-gradient(145deg, rgba(255, 107, 53, 0.1), rgba(17, 34, 64, 0.92));
}

.channel-card-featured:hover {
  border-color: rgba(255, 107, 53, 0.6);
}

.channel-icon {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: rgba(0, 201, 167, 0.1);
  color: var(--color-data);
  margin-bottom: 0.625rem;
}

.channel-card-featured .channel-icon {
  background: rgba(255, 107, 53, 0.14);
  color: var(--color-accent);
}

.channel-icon svg {
  width: 23px;
  height: 23px;
}

.channel-label {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.channel-value {
  font-family: var(--font-data);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--color-text);
  word-break: break-all;
  transition: color 0.3s ease;
}

.channel-card:hover .channel-value {
  color: var(--color-data);
}

.channel-card-featured:hover .channel-value {
  color: var(--color-accent);
}

.channel-card-address .channel-value {
  font-family: var(--font-body);
  font-size: 1rem;
  word-break: normal;
}

.channel-note {
  margin-top: auto;
  padding-top: 0.75rem;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  color: var(--color-muted);
  font-size: 0.875rem;
  line-height: 1.6;
}

.channel-support {
  margin-top: 1.5rem;
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  background: rgba(245, 158, 11, 0.06);
  border-left: 3px solid var(--color-warning);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.support-mark {
  flex: 0 0 auto;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(245, 158, 11, 0.18);
  color: var(--color-warning);
  display: grid;
  place-items: center;
  font-family: var(--font-data);
  font-size: 0.9375rem;
  font-weight: 700;
}

.channel-support p {
  color: var(--color-muted);
  font-size: 0.9375rem;
  line-height: 1.75;
  margin: 0;
}

.channel-support strong {
  color: var(--color-text);
  font-family: var(--font-data);
  font-weight: 600;
  word-break: break-all;
}

/* ===== Cooperation ===== */
.page-contact .contact-cooperation {
  padding-top: 4rem;
  padding-bottom: 3rem;
}

.cooperation-intro {
  margin-bottom: 2.5rem;
}

.page-contact .contact-cooperation .section-index {
  font-size: 0.875rem;
  margin-bottom: 0.625rem;
}

.cooperation-lead {
  color: var(--color-muted);
  font-size: 1.0625rem;
  line-height: 1.8;
  max-width: 56ch;
  margin: 0.75rem 0 1rem;
}

.cooperation-story-link {
  display: inline-block;
  color: var(--color-data);
  font-size: 0.9375rem;
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 201, 167, 0.3);
  padding-bottom: 2px;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.cooperation-story-link:hover {
  color: var(--color-accent);
  border-color: rgba(255, 107, 53, 0.5);
}

.cooperation-panel {
  display: grid;
  gap: 2.5rem;
}

.cooperation-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.25rem;
}

.cooperation-list li {
  padding: 1.5rem 1.75rem;
  border-radius: var(--radius-md);
  background: rgba(17, 34, 64, 0.5);
  border: 1px solid var(--color-border);
  transition: border-color 0.3s ease, background 0.3s ease;
}

.cooperation-list li:hover {
  border-color: rgba(255, 107, 53, 0.35);
  background: rgba(17, 34, 64, 0.8);
}

.cooperation-num {
  display: block;
  font-family: var(--font-data);
  font-size: 0.8125rem;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
}

.cooperation-list h3 {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  color: var(--color-text);
  margin: 0 0 0.5rem;
}

.cooperation-list p {
  color: var(--color-muted);
  font-size: 0.9375rem;
  line-height: 1.75;
  margin: 0;
}

.cooperation-media {
  margin: 0;
  align-self: center;
}

.cooperation-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.cooperation-media figcaption {
  color: var(--color-muted);
  font-size: 0.875rem;
  line-height: 1.7;
  padding: 0.75rem 0.25rem 0;
}

/* ===== FAQ Guide ===== */
.page-contact .contact-faq-guide {
  padding-top: 3rem;
  padding-bottom: 4rem;
}

.page-contact .contact-faq-guide .section-index {
  font-size: 0.875rem;
  margin-bottom: 0.625rem;
}

.faq-guide-panel {
  display: grid;
  gap: 2.5rem;
  padding: 2rem 1.5rem;
  background: linear-gradient(180deg, rgba(17, 34, 64, 0.55), rgba(10, 25, 47, 0.35));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.faq-guide-copy > p {
  color: var(--color-muted);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-top: 0.75rem;
}

.faq-topic-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
  margin: 1.5rem 0;
}

.faq-topic-tags a {
  display: inline-block;
  padding: 0.5rem 1.1rem;
  border-radius: var(--radius-pill);
  background: rgba(0, 201, 167, 0.07);
  border: 1px solid rgba(0, 201, 167, 0.22);
  color: var(--color-data);
  font-size: 0.875rem;
  text-decoration: none;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.faq-topic-tags a:hover {
  background: rgba(0, 201, 167, 0.16);
  border-color: rgba(0, 201, 167, 0.45);
  color: var(--color-text);
}

.faq-guide-media {
  margin: 0;
  align-self: center;
}

.faq-guide-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.faq-guide-media figcaption {
  color: var(--color-muted);
  font-size: 0.875rem;
  line-height: 1.7;
  padding: 0.75rem 0.25rem 0;
}

/* ===== Desktop ≥768px ===== */
@media (min-width: 768px) {
  .page-contact > section {
    padding-inline: 32px;
  }

  .page-contact .contact-hero {
    padding-top: 5rem;
    padding-bottom: 4rem;
  }

  .contact-hero-grid {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: center;
    gap: 3.5rem;
  }

  .contact-hero-visual {
    min-height: 360px;
  }

  .channel-list {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    align-items: start;
  }

  .channel-card-email {
    margin-top: -12px;
  }

  .channel-card-address {
    margin-top: 12px;
  }

  .cooperation-panel {
    grid-template-columns: 1fr 1fr;
    gap: 3.5rem;
    align-items: center;
  }

  .faq-guide-panel {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 3rem;
    align-items: center;
    padding: 3rem;
  }
}

/* ===== Desktop ≥1024px ===== */
@media (min-width: 1024px) {
  .page-contact .contact-faq-guide {
    padding-bottom: 5.5rem;
  }
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-hero-visual::after,
  .page-contact .hero-node::after {
    animation: none;
  }
}