.page-contact {
  --pc-gap: clamp(18px, 2.4vw, 32px);
  --pc-panel: var(--navy-900);
  --pc-panel-hi: var(--navy-800);
  --pc-hair: var(--line-100);
  --pc-dim: var(--slate-400);
  --pc-inline-pad: clamp(14px, 2vw, 22px);
  padding-bottom: clamp(48px, 7vw, 96px);
}

/* ---------- breadcrumbs ---------- */
.page-contact .breadcrumbs {
  padding: clamp(18px, 3vw, 30px) 0 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--pc-dim);
}
.page-contact .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-contact .breadcrumbs li + li::before {
  content: "/";
  margin-right: 6px;
  color: var(--pc-hair);
}
.page-contact .breadcrumbs a {
  color: var(--cyan-200);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 120ms ease, color 120ms ease;
}
.page-contact .breadcrumbs a:hover,
.page-contact .breadcrumbs a:focus-visible {
  border-bottom-color: var(--accent);
  outline: none;
}

/* ---------- hero ---------- */
.page-contact .contact-hero {
  position: relative;
  display: grid;
  gap: var(--pc-gap);
  padding: clamp(24px, 4vw, 52px) 0 clamp(26px, 4vw, 48px);
  border-bottom: 1px solid var(--pc-hair);
  overflow: clip;
}
.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: -20% -25% 10% 35%;
  z-index: 0;
  pointer-events: none;
  background:
    linear-gradient(118deg, transparent 44%, rgba(43, 242, 206, 0.12) 49.5%, transparent 55%),
    radial-gradient(circle at 74% 26%, rgba(43, 242, 206, 0.14), transparent 62%),
    radial-gradient(circle at 12% 92%, rgba(255, 176, 58, 0.08), transparent 58%);
}
.page-contact .contact-hero > * {
  position: relative;
  z-index: 1;
}
.page-contact .contact-hero__lead h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(30px, 6.4vw, 66px);
  line-height: 1.08;
  letter-spacing: -0.015em;
  max-width: 20ch;
}
.page-contact .contact-hero__text {
  margin: 18px 0 0;
  max-width: 42ch;
  font-size: 15px;
  line-height: 1.95;
  color: var(--pc-dim);
}
.page-contact .contact-hero__meta {
  margin: 16px 0 0;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--cyan-200);
}

.page-contact .route-card {
  align-self: end;
  border: 1px solid var(--pc-hair);
  background: linear-gradient(165deg, rgba(23, 48, 95, 0.72), rgba(4, 9, 26, 0.94));
  padding: var(--pc-inline-pad);
}
.page-contact .route-card__title {
  margin: 0 0 12px;
  color: var(--warn);
}
.page-contact .route-card__list {
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-contact .route-card__row {
  display: grid;
  gap: 4px;
  padding: 11px 0;
  border-top: 1px solid var(--pc-hair);
}
.page-contact .route-card__row:last-child {
  border-bottom: 1px solid var(--pc-hair);
}
.page-contact .route-card__cond {
  font-size: 13px;
  line-height: 1.7;
  color: var(--text);
}
.page-contact .route-card__to {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cyan-400);
}

/* ---------- .page-contact grid ---------- */
.page-contact .contact-body {
  display: grid;
  gap: var(--pc-gap);
  margin-top: clamp(28px, 4vw, 52px);
}
.page-contact .sec-channels { order: 1; }
.page-contact .sec-usage { order: 2; }
.page-contact .sec-correction { order: 3; }
.page-contact .sec-window { order: 4; }
.page-contact .sec-exclude { order: 5; }

.page-contact .pc-section {
  min-width: 0;
  padding-top: clamp(18px, 2.4vw, 28px);
  border-top: 1px solid var(--pc-hair);
}
.page-contact .section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--pc-hair);
}
.page-contact .section-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(20px, 3vw, 30px);
  letter-spacing: 0.01em;
}
.page-contact .section-note {
  margin: 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--pc-dim);
}
.page-contact .section-text {
  margin: 16px 0 0;
  max-width: 46ch;
  font-size: 14px;
  line-height: 1.95;
  color: var(--pc-dim);
}
.page-contact .section-text a,
.page-contact .tab-panel a,
.page-contact .exclude-foot a {
  color: var(--cyan-200);
  text-decoration: none;
  border-bottom: 1px solid rgba(156, 246, 230, 0.45);
  transition: border-color 120ms ease, color 120ms ease;
}
.page-contact .section-text a:hover,
.page-contact .tab-panel a:hover,
.page-contact .exclude-foot a:hover {
  color: var(--cyan-400);
  border-bottom-color: var(--cyan-400);
}

/* ---------- field rows ---------- */
.page-contact .channels-grid {
  margin-top: 6px;
}
.page-contact .field-rows {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--pc-hair);
}
.page-contact .field-row {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--pc-hair);
}
.page-contact .field-key {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--pc-dim);
}
.page-contact .field-val {
  font-size: clamp(15px, 1.7vw, 18px);
  line-height: 1.5;
  color: var(--text);
  overflow-wrap: anywhere;
}
.page-contact .field-val.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--cyan-400);
}
.page-contact .field-note {
  font-size: 13px;
  line-height: 1.8;
  color: var(--pc-dim);
}

/* ---------- media frame ---------- */
.page-contact .media-frame {
  position: relative;
  margin: 0;
  border: 1px solid var(--pc-hair);
  background: var(--pc-panel);
  overflow: hidden;
}
.page-contact .media-frame__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.8) contrast(1.06) brightness(0.92);
}
.page-contact .media-frame__grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(43, 242, 206, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(43, 242, 206, 0.1) 1px, transparent 1px);
  background-size: 34px 34px;
}
.page-contact .media-frame__caption {
  display: block;
  padding: 10px 12px;
  border-top: 1px solid var(--pc-hair);
  font-size: 12px;
  line-height: 1.7;
  color: var(--pc-dim);
  background: rgba(4, 9, 26, 0.6);
}
.page-contact .media-frame--square {
  margin-top: 18px;
}
.page-contact .media-frame--square .media-frame__img {
  aspect-ratio: 1 / 1;
}
.page-contact .media-frame--wide {
  margin-top: 22px;
}
.page-contact .media-frame--wide .media-frame__img {
  aspect-ratio: 12 / 5;
}

/* ---------- tabs ---------- */
.page-contact .tab-list {
  display: flex;
  flex-wrap: wrap;
  margin-top: 6px;
  border-bottom: 1px solid var(--pc-hair);
}
.page-contact .tab {
  appearance: none;
  flex: 0 0 auto;
  padding: 11px 18px;
  border: 0;
  border-bottom: 2px solid transparent;
  background: transparent;
  color: var(--pc-dim);
  font-family: var(--font-body);
  font-size: 13px;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: color 120ms ease, border-color 120ms ease, background-color 120ms ease;
}
.page-contact .tab:hover {
  color: var(--text);
}
.page-contact .tab[aria-selected="true"] {
  color: var(--cyan-400);
  border-bottom-color: var(--cyan-400);
  background: linear-gradient(180deg, rgba(43, 242, 206, 0.12), rgba(43, 242, 206, 0) 78%);
}
.page-contact .tab:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}
.page-contact .tab-panel {
  display: block;
  padding: 18px 0 0;
  animation: pc-fade 180ms ease both;
}
.page-contact .tab-panel[hidden],
.page-contact .tab-panel[aria-hidden="true"] {
  display: none;
}
.page-contact .panel-h {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 17px;
  letter-spacing: 0.02em;
  color: var(--text);
}
.page-contact .tab-panel p {
  margin: 0 0 12px;
  max-width: 48ch;
  font-size: 14px;
  line-height: 1.95;
  color: var(--pc-dim);
}
.page-contact .panel-foot {
  margin: 0;
  padding-top: 10px;
  border-top: 1px solid var(--pc-hair);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--cyan-200);
}

/* ---------- checklist ---------- */
.page-contact .check-list {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--pc-hair);
}
.page-contact .check-item {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: 10px;
  padding: 13px 0;
  border-bottom: 1px solid var(--pc-hair);
}
.page-contact .check-item input[type="checkbox"] {
  width: 16px;
  height: 16px;
  margin: 3px 0 0;
  accent-color: var(--cyan-400);
  cursor: pointer;
}
.page-contact .check-item input[type="checkbox"]:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}
.page-contact .check-item label {
  display: block;
  cursor: pointer;
}
.page-contact .check-name {
  display: block;
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--text);
}
.page-contact .check-desc {
  display: block;
  margin-top: 3px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--pc-dim);
}

/* ---------- exclude ---------- */
.page-contact .exclude-box {
  margin-top: 18px;
  border: 1px solid var(--pc-hair);
  background: linear-gradient(160deg, rgba(23, 48, 95, 0.55), rgba(4, 9, 26, 0.92));
}
.page-contact .exclude-box summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px var(--pc-inline-pad);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--amber-200);
  cursor: pointer;
  list-style: none;
}
.page-contact .exclude-box summary::-webkit-details-marker {
  display: none;
}
.page-contact .exclude-box summary::before {
  content: "+";
  font-family: var(--font-mono);
  color: var(--warn);
}
.page-contact .exclude-box[open] summary::before {
  content: "–";
}
.page-contact .exclude-box summary:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: -2px;
}
.page-contact .exclude-list {
  margin: 0;
  padding: 0 var(--pc-inline-pad);
  list-style: none;
  border-top: 1px solid var(--pc-hair);
}
.page-contact .exclude-list li {
  padding: 12px 0 12px 16px;
  border-bottom: 1px solid var(--pc-hair);
  font-size: 13px;
  line-height: 1.85;
  color: var(--pc-dim);
  position: relative;
}
.page-contact .exclude-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 19px;
  width: 6px;
  height: 1px;
  background: var(--warn);
}
.page-contact .exclude-foot {
  margin: 0;
  padding: 14px var(--pc-inline-pad) 16px;
  font-size: 13px;
  line-height: 1.9;
  color: var(--pc-dim);
}

/* ---------- window / steps ---------- */
.page-contact .window-bar {
  position: relative;
  height: 16px;
  margin-top: 20px;
  border: 1px solid var(--pc-hair);
  background: var(--navy-800);
  overflow: hidden;
}
.page-contact .window-bar__fill {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--navy-700) 0%, var(--cyan-400) 52%, var(--amber-400) 100%);
  opacity: 0.82;
}
.page-contact .window-bar__tick {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 64%;
  width: 1px;
  background: rgba(4, 9, 26, 0.55);
}
.page-contact .window-bar__tick--mid {
  left: 32%;
}
.page-contact .window-scale {
  display: flex;
  justify-content: space-between;
  margin-top: 8px;
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--pc-dim);
}

.page-contact .steps {
  display: grid;
  gap: 20px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}
.page-contact .step {
  padding-top: 12px;
  border-top: 2px solid var(--pc-hair);
}
.page-contact .step:first-child {
  border-top-color: var(--amber-400);
}
.page-contact .step-num {
  display: block;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--warn);
}
.page-contact .step-title {
  margin: 8px 0 6px;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 16px;
  color: var(--text);
}
.page-contact .step p {
  margin: 0;
  font-size: 13px;
  line-height: 1.9;
  color: var(--pc-dim);
}

@keyframes pc-fade {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}

/* ---------- responsive ---------- */
@media (min-width: 700px) {
  .page-contact .field-row {
    grid-template-columns: 108px minmax(0, 1fr);
    align-items: baseline;
  }
  .page-contact .field-note {
    grid-column: 2 / -1;
  }
  .page-contact .contact-hero {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: end;
  }
  .page-contact .steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }
}

@media (min-width: 1020px) {
  .page-contact .contact-body {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    grid-template-areas:
      "channels correction"
      "usage correction"
      "window window"
      "exclude exclude";
    align-items: start;
    column-gap: clamp(28px, 3.4vw, 56px);
  }
  .page-contact .sec-channels { grid-area: channels; }
  .page-contact .sec-usage { grid-area: usage; }
  .page-contact .sec-correction { grid-area: correction; }
  .page-contact .sec-window { grid-area: window; }
  .page-contact .sec-exclude { grid-area: exclude; }
  .page-contact .sec-window .steps {
    max-width: none;
  }
}

@media (min-width: 1180px) {
  .page-contact .channels-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 262px;
    gap: var(--pc-gap);
    align-items: start;
  }
  .page-contact .media-frame--square {
    margin-top: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .tab-panel {
    animation: none;
  }
  .page-contact .tab,
  .page-contact .section-text a,
  .page-contact .tab-panel a,
  .page-contact .breadcrumbs a {
    transition: none;
  }
}
</style>