.page-contact {
  --coop-line: var(--grid-faint);
  overflow-x: hidden;
}

.page-contact > .breadcrumb {
  padding-top: 22px;
  font-size: 14px;
  color: var(--text-400);
}
.page-contact > .breadcrumb a {
  color: var(--text-400);
  text-decoration: none;
  transition: color var(--t-fast);
}
.page-contact > .breadcrumb a:hover { color: var(--cyan-400); }
.page-contact .breadcrumb-sep { margin: 0 8px; color: var(--grid-line); }

/* ---------- hero ---------- */
.page-contact .coop-hero {
  position: relative;
  padding: 28px 0 44px;
}
.page-contact .coop-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-faint) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-faint) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.4;
  -webkit-mask-image: radial-gradient(ellipse at 18% 0%, #000 0%, transparent 72%);
  mask-image: radial-gradient(ellipse at 18% 0%, #000 0%, transparent 72%);
  pointer-events: none;
}
.page-contact .coop-hero-grid {
  position: relative;
  display: grid;
  gap: 28px;
}
.page-contact .coop-hero h1 {
  margin: 12px 0 16px;
  font-size: 30px;
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--text-100);
}
.page-contact .coop-hero .lead {
  max-width: 620px;
  color: var(--text-400);
}
.page-contact .coop-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-contact .coop-pulse {
  position: relative;
  padding: 30px 20px 20px;
  border: 1px solid var(--grid-line);
  background: linear-gradient(165deg, var(--ink-800), var(--ink-900) 62%, var(--ink-950));
}
.page-contact .coop-pulse-badge {
  position: absolute;
  top: 0;
  left: 0;
  padding: 4px 10px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--ink-950);
  background: var(--cyan-400);
}
.page-contact .coop-pulse-title {
  margin: 0;
  font-size: 17px;
  letter-spacing: -0.01em;
  color: var(--cyan-200);
}
.page-contact .coop-pulse-list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
}
.page-contact .coop-pulse-list li {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding: 12px 0;
  border-top: 1px solid var(--grid-faint);
}
.page-contact .coop-pulse-list li:first-child { border-top: 0; padding-top: 0; }
.page-contact .coop-pulse-k {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text-400);
}
.page-contact .coop-pulse-v {
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-100);
}

/* ---------- toc ---------- */
.page-contact .coop-toc {
  border-top: 1px solid var(--grid-line);
  border-bottom: 1px solid var(--grid-line);
  background: rgba(12, 22, 51, 0.72);
}
.page-contact .coop-toc-inner {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-top: 8px;
  padding-bottom: 8px;
  overflow-x: auto;
  scrollbar-width: none;
}
.page-contact .coop-toc-inner::-webkit-scrollbar { display: none; }
.page-contact .coop-toc-label {
  flex: 0 0 auto;
  padding-right: 12px;
  border-right: 1px solid var(--grid-line);
}
.page-contact .coop-toc-list {
  display: flex;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
  white-space: nowrap;
}
.page-contact .coop-toc-list a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 11px;
  font-size: 14px;
  color: var(--text-400);
  text-decoration: none;
  border: 1px solid transparent;
  transition: color var(--t-fast), border-color var(--t-fast), background var(--t-fast);
}
.page-contact .coop-toc-list a .mono {
  font-size: 11px;
  color: var(--cyan-400);
}
.page-contact .coop-toc-list a:hover { color: var(--cyan-200); }
.page-contact .coop-toc-list a[aria-current="true"] {
  color: var(--text-100);
  border-color: var(--grid-line);
  background: var(--ink-800);
}

/* ---------- flow ---------- */
.page-contact .coop-flow {
  display: flex;
  flex-direction: column;
  gap: 36px;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 44px var(--gutter) 8px;
  box-sizing: border-box;
}
.page-contact .coop-flow section,
.page-contact .coop-flow aside { min-width: 0; }
.page-contact .coop-flow h2 {
  margin: 10px 0 10px;
  font-size: 24px;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--text-100);
}
.page-contact .coop-flow h3 {
  margin: 0 0 6px;
  font-size: 16px;
  letter-spacing: -0.01em;
  color: var(--text-100);
}
.page-contact .coop-flow p { margin: 0 0 10px; }
.page-contact .coop-flow .muted { color: var(--text-400); font-size: 15px; }

/* ---------- channels ---------- */
.page-contact .coop-channels {
  padding: 26px 18px 20px;
  border: 1px solid var(--grid-line);
  background: linear-gradient(180deg, var(--ink-900), var(--ink-950));
}
.page-contact .ch-grid {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-contact .ch-item {
  padding: 14px 16px;
  border-left: 2px solid var(--cyan-400);
  background: rgba(19, 32, 72, 0.55);
}
.page-contact .ch-key {
  display: block;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--text-400);
}
.page-contact .ch-val {
  margin: 6px 0 6px;
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--cyan-200);
  word-break: break-word;
}
.page-contact .ch-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-400);
}
.page-contact .ch-address {
  margin-top: 12px;
  padding: 14px 16px;
  border: 1px dashed var(--grid-line);
  background: rgba(7, 14, 34, 0.6);
}
.page-contact .ch-addr-text {
  margin: 6px 0 6px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-100);
}
.page-contact .coop-map {
  margin: 20px 0 0;
  aspect-ratio: 3 / 2;
}
.page-contact .coop-map img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ---------- directions ---------- */
.page-contact .dir-grid {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}
.page-contact .dir-card {
  position: relative;
  padding: 26px 18px 20px;
  border: 1px solid var(--grid-line);
  background: var(--ink-900);
  transition: border-color var(--t-fast), background var(--t-fast), transform var(--t-fast);
}
.page-contact .dir-card--lead {
  background: linear-gradient(165deg, var(--ink-800), var(--ink-900) 70%);
}
.page-contact .dir-card:nth-child(3) {
  background: linear-gradient(180deg, var(--ink-950), var(--ink-900) 80%);
}
.page-contact .dir-card:hover {
  border-color: var(--cyan-400);
  transform: translateY(-2px);
}
.page-contact .dir-num {
  position: absolute;
  top: 0;
  left: 0;
  padding: 4px 9px;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--cyan-400);
  border-right: 1px solid var(--grid-line);
  border-bottom: 1px solid var(--grid-line);
}
.page-contact .dir-card h3 {
  margin-top: 4px;
  font-size: 22px;
  line-height: 1.25;
}
.page-contact .dir-for {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--cyan-200);
}
.page-contact .dir-intro {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-400);
}
.page-contact .dir-list {
  list-style: none;
  margin: 14px 0 0;
  padding: 14px 0 0;
  border-top: 1px solid var(--grid-faint);
  display: grid;
  gap: 8px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-400);
}
.page-contact .dir-list li {
  position: relative;
  padding-left: 16px;
}
.page-contact .dir-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 7px;
  height: 1px;
  background: var(--cyan-400);
}
.page-contact .coop-directions-media {
  margin: 22px 0 0;
  aspect-ratio: 10 / 7;
}
.page-contact .coop-directions-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ---------- materials ---------- */
.page-contact .coop-materials {
  padding-top: 26px;
  border-top: 1px solid var(--grid-line);
}
.page-contact .mat-grid {
  display: grid;
  gap: 22px;
}
.page-contact .mat-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-contact .mat-list li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 14px;
  padding: 15px 0;
  border-top: 1px solid var(--grid-faint);
}
.page-contact .mat-list li:last-child {
  border-bottom: 1px solid var(--grid-faint);
}
.page-contact .mat-i {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan-400);
  padding-top: 3px;
}
.page-contact .mat-list p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-400);
}

/* ---------- side ---------- */
.page-contact .coop-side {
  display: grid;
  gap: 24px;
  align-content: start;
}
.page-contact .side-block {
  padding: 22px 18px;
  border: 1px solid var(--grid-line);
  background: var(--ink-900);
}
.page-contact .side-block--signal {
  border-left: 3px solid var(--signal-500);
  background: linear-gradient(180deg, rgba(255, 138, 43, 0.07), var(--ink-900) 58%);
}
.page-contact .side-block--plain { background: var(--ink-950); }
.page-contact .side-lead {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-400);
}

.page-contact .beat-list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}
.page-contact .beat-list li {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 10px;
}
.page-contact .beat-num {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan-400);
  padding-top: 3px;
}
.page-contact .beat-list h3 { font-size: 15px; }
.page-contact .beat-list p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-400);
}

.page-contact .wo-list {
  list-style: none;
  margin: 14px 0 18px;
  padding: 0;
  display: grid;
  gap: 9px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-400);
}
.page-contact .wo-list li {
  position: relative;
  padding-left: 20px;
}
.page-contact .wo-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.68em;
  width: 7px;
  height: 7px;
  border: 1px solid var(--signal-500);
}

.page-contact .qa {
  border-top: 1px solid var(--grid-faint);
}
.page-contact .qa:last-of-type {
  border-bottom: 1px solid var(--grid-faint);
}
.page-contact .qa summary {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-100);
  cursor: pointer;
  list-style: none;
}
.page-contact .qa summary::-webkit-details-marker { display: none; }
.page-contact .qa summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  color: var(--cyan-400);
}
.page-contact .qa[open] summary::after { content: "–"; }
.page-contact .qa[open] summary { color: var(--cyan-200); }
.page-contact .qa-body {
  padding: 0 0 16px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--text-400);
}
.page-contact .qa-body p { margin: 0; }

/* ---------- next ---------- */
.page-contact .coop-next-wrap {
  padding-top: 44px;
  padding-bottom: 64px;
  border-top: 1px solid var(--grid-line);
}
.page-contact .coop-next-title {
  margin: 10px 0 20px;
  font-size: 24px;
  letter-spacing: -0.01em;
  color: var(--text-100);
}
.page-contact .coop-next {
  display: grid;
  gap: 12px;
}
.page-contact .coop-next a {
  display: block;
  padding: 16px 18px;
  border: 1px solid var(--grid-line);
  background: var(--ink-900);
  color: var(--text-100);
  text-decoration: none;
  transition: border-color var(--t-fast), background var(--t-fast);
}
.page-contact .coop-next a:hover {
  border-color: var(--cyan-400);
  background: var(--ink-800);
}
.page-contact .coop-next-k {
  display: block;
  margin-bottom: 6px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--cyan-400);
}
.page-contact .coop-next-v {
  display: block;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-400);
}

/* ---------- responsive ---------- */
@media (min-width: 600px) {
  .page-contact .coop-hero h1 { font-size: 38px; }
  .page-contact .coop-flow h2 { font-size: 28px; }
  .page-contact .coop-channels { padding: 30px 24px 24px; }
  .page-contact .side-block { padding: 26px 22px; }
  .page-contact .coop-next { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 760px) {
  .page-contact .dir-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .page-contact .mat-grid { grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: 40px; }
  .page-contact .ch-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 900px) {
  .page-contact .coop-hero { padding: 48px 0 56px; }
  .page-contact .coop-hero h1 { font-size: 52px; max-width: 14em; }
  .page-contact .coop-hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 44px;
    align-items: start;
  }
  .page-contact .coop-flow {
    display: grid;
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    grid-template-areas:
      "directions directions"
      "materials  materials"
      "channels   side";
    gap: 40px 44px;
    padding-top: 56px;
  }
  .page-contact .coop-directions { grid-area: directions; }
  .page-contact .coop-materials { grid-area: materials; }
  .page-contact .coop-channels { grid-area: channels; }
  .page-contact .coop-side { grid-area: side; }
}

@media (min-width: 1200px) {
  .page-contact .coop-hero h1 { font-size: 60px; }
  .page-contact .coop-flow h2 { font-size: 30px; }
  .page-contact .coop-next { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (max-width: 380px) {
  .page-contact .coop-hero h1 { font-size: 26px; }
  .page-contact .coop-pulse-list li { grid-template-columns: 72px minmax(0, 1fr); gap: 8px; }
  .page-contact .ch-val { font-size: 14px; }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .dir-card,
  .page-contact .coop-next a,
  .page-contact .coop-toc-list a {
    transition: none;
  }
  .page-contact .dir-card:hover { transform: none; }
}
<<<PAGE_CSS_END>>>