.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-h) + 24px) 0 44px;
  background: var(--ink-900);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: -12% -6% -6% 18%;
  background: linear-gradient(200deg, rgba(31, 163, 107, 0.55) 0%, rgba(11, 22, 34, 0) 66%), var(--ink-800);
  clip-path: polygon(30% 0, 100% 0, 100% 100%, 0 76%);
  pointer-events: none;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--turf-500) 0%, var(--signal-500) 62%, rgba(255, 107, 44, 0) 100%);
  pointer-events: none;
}

.page-contact .contact-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 26px;
}

.page-contact .hero-copy {
  max-width: 40em;
}

.page-contact .hero-copy h1 {
  margin: 10px 0 14px;
  font-family: var(--font-display);
  font-size: var(--step-5);
  font-weight: 700;
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--paper-50);
}

.page-contact .hero-lede {
  margin: 0;
  font-size: var(--step-3);
  line-height: 1.75;
  color: var(--paper-100);
}

.page-contact .hero-slab {
  position: relative;
  padding: 20px 20px 22px;
  border: 1px solid var(--turf-500);
  border-left: 4px solid var(--signal-500);
  background: rgba(11, 22, 34, 0.86);
  clip-path: var(--cut);
}

.page-contact .slab-label {
  margin: 0 0 12px;
  font-family: var(--font-panel);
  font-size: var(--step-1);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--turf-300);
}

.page-contact .slab-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-contact .slab-steps li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  font-size: var(--step-2);
  line-height: 1.6;
  color: var(--paper-50);
}

.page-contact .step-no {
  font-family: var(--font-data);
  font-size: var(--step-1);
  color: var(--signal-500);
  letter-spacing: 0.04em;
}

.page-contact .desk {
  padding-top: 28px;
}

.page-contact .desk-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  align-items: start;
}

.page-contact .desk-main {
  min-width: 0;
}

.page-contact .desk-rail {
  min-width: 0;
  display: grid;
  gap: 18px;
}

.page-contact .panel-title {
  font-family: var(--font-panel);
  letter-spacing: 0.02em;
}

.page-contact .panel-lede {
  margin: 0 0 18px;
  font-size: var(--step-2);
  line-height: 1.7;
  color: var(--grey-400);
}

.page-contact .panel-tail {
  margin: 18px 0 0;
  font-size: var(--step-2);
  line-height: 1.7;
  color: var(--grey-400);
}

.page-contact .panel-body a,
.page-contact .rail-note a,
.page-contact .panel-tail a {
  color: var(--turf-300);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .panel-body a:hover,
.page-contact .rail-note a:hover,
.page-contact .panel-tail a:hover {
  color: var(--signal-200);
}

/* 四格合作索引 */
.page-contact .coop-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-contact .coop-cell {
  border: 1px solid var(--ink-700);
  background: var(--ink-800);
  clip-path: var(--cut);
}

.page-contact .coop-cell > summary {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 4px 10px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
}

.page-contact .coop-cell > summary::-webkit-details-marker {
  display: none;
}

.page-contact .coop-cell[open] > summary {
  border-bottom: 1px solid var(--ink-700);
}

.page-contact .coop-index {
  font-family: var(--font-data);
  font-size: var(--step-2);
  color: var(--signal-500);
}

.page-contact .coop-name {
  font-family: var(--font-panel);
  font-size: var(--step-4);
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--paper-50);
}

.page-contact .coop-line {
  grid-column: 2;
  font-size: var(--step-2);
  line-height: 1.6;
  color: var(--grey-400);
}

.page-contact .coop-cell:hover {
  border-color: var(--turf-500);
}

.page-contact .coop-body {
  padding: 14px 16px 16px;
}

.page-contact .coop-body ul {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 8px;
}

.page-contact .coop-body li {
  font-size: var(--step-2);
  line-height: 1.7;
  color: var(--paper-100);
}

/* 邮件主题模板 */
.page-contact .mail-format {
  margin: 18px 0;
  padding: 16px 18px;
  border: 1px solid var(--ink-700);
  border-left: 4px solid var(--signal-500);
  background: var(--ink-800);
}

.page-contact .mail-format-label {
  margin: 0 0 10px;
  font-family: var(--font-panel);
  font-size: var(--step-1);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--signal-200);
}

.page-contact .mail-format-code {
  display: block;
  padding: 12px 14px;
  border: 1px dashed var(--ink-700);
  background: var(--ink-900);
  font-family: var(--font-data);
  font-size: var(--step-2);
  letter-spacing: 0.02em;
  color: var(--signal-200);
  white-space: nowrap;
  overflow-x: auto;
}

.page-contact .mail-format-note {
  margin: 10px 0 0;
  font-size: var(--step-2);
  line-height: 1.7;
  color: var(--grey-400);
}

.page-contact .table-caption {
  padding: 0 0 10px;
  text-align: left;
  font-family: var(--font-panel);
  font-size: var(--step-2);
  letter-spacing: 0.08em;
  color: var(--grey-400);
}

/* 准备清单 */
.page-contact .checklist {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-contact .check-item {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 4px 12px;
  padding: 12px 14px;
  border: 1px solid var(--ink-700);
  background: var(--ink-800);
}

.page-contact .check-box {
  grid-row: span 2;
  width: 18px;
  height: 18px;
  margin-top: 3px;
  border: 1px solid var(--turf-500);
  background: rgba(31, 163, 107, 0.12);
}

.page-contact .check-label {
  font-family: var(--font-panel);
  font-size: var(--step-3);
  font-weight: 700;
  color: var(--paper-50);
}

.page-contact .check-note {
  font-size: var(--step-2);
  line-height: 1.65;
  color: var(--grey-400);
}

/* 图片容器 */
.page-contact .media-frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-contact .media-frame figcaption {
  margin-top: 8px;
  font-size: var(--step-1);
  letter-spacing: 0.06em;
  color: var(--grey-400);
}

.page-contact .contact-shot {
  margin: 0;
  border: 1px solid var(--ink-700);
}

/* 浅色联系信息卡 */
.page-contact .contact-card {
  padding: 22px 20px 24px;
  border: 1px solid var(--ink-700);
  background: var(--paper-50);
  box-shadow: var(--shadow-print);
}

.page-contact .card-kicker {
  margin: 0 0 8px;
  font-family: var(--font-panel);
  font-size: var(--step-1);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--turf-500);
}

.page-contact .contact-mail {
  margin: 0 0 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--paper-100);
  font-family: var(--font-data);
  font-size: var(--step-3);
  line-height: 1.4;
  color: var(--ink-900);
  word-break: break-all;
}

.page-contact .contact-list {
  margin: 0 0 16px;
  display: grid;
  gap: 12px;
}

.page-contact .contact-row {
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
}

.page-contact .contact-row dt {
  font-family: var(--font-panel);
  font-size: var(--step-2);
  letter-spacing: 0.08em;
  color: var(--ink-700);
}

.page-contact .contact-row dd {
  margin: 0;
  font-size: var(--step-2);
  line-height: 1.65;
  color: var(--ink-900);
}

.page-contact .contact-note {
  margin: 0 0 12px;
  font-size: var(--step-2);
  line-height: 1.7;
  color: var(--ink-800);
}

.page-contact .contact-bound {
  margin: 0;
  padding-top: 12px;
  border-top: 1px dashed var(--paper-100);
  font-size: var(--step-1);
  line-height: 1.7;
  color: #4a5865;
}

/* 窄栏深色卡 */
.page-contact .rail-card {
  padding: 18px 20px 20px;
  border: 1px solid var(--ink-700);
  background: var(--ink-800);
}

.page-contact .rail-title {
  margin: 0 0 14px;
  font-family: var(--font-panel);
  font-size: var(--step-3);
  letter-spacing: 0.06em;
  color: var(--paper-50);
}

.page-contact .sla-list {
  margin: 0 0 12px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-contact .sla-list li {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--ink-700);
}

.page-contact .sla-list li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-contact .sla-tag {
  font-family: var(--font-data);
  font-size: var(--step-1);
  letter-spacing: 0.04em;
  color: var(--signal-500);
}

.page-contact .sla-text {
  font-size: var(--step-2);
  line-height: 1.65;
  color: var(--paper-100);
}

.page-contact .rail-note {
  margin: 0;
  font-size: var(--step-2);
  line-height: 1.7;
  color: var(--grey-400);
}

.page-contact .region-map {
  display: grid;
  gap: 6px;
  margin: 0 0 14px;
}

.page-contact .region-layer {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 9px 12px 9px 10px;
  border: 1px solid var(--ink-700);
  border-left: 3px solid var(--ink-700);
  background: var(--ink-900);
  transition: border-left-color 0.25s ease, background 0.25s ease;
}

.page-contact .region-layer:hover {
  border-left-color: var(--turf-500);
  background: rgba(31, 163, 107, 0.1);
}

.page-contact .region-key {
  font-family: var(--font-panel);
  font-size: var(--step-1);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--grey-400);
}

.page-contact .region-val {
  font-family: var(--font-data);
  font-size: var(--step-2);
  color: var(--turf-300);
  text-align: right;
}

@media (min-width: 640px) {
  .page-contact .coop-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .hero-copy h1 {
    font-size: var(--step-6);
  }
}

@media (min-width: 960px) {
  .page-contact .contact-hero {
    padding: calc(var(--header-h) + 36px) 0 56px;
  }

  .page-contact .contact-hero-inner {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.82fr);
    align-items: end;
    gap: 44px;
  }

  .page-contact .hero-copy h1 {
    font-size: var(--step-7);
  }

  .page-contact .hero-slab {
    padding: 22px 22px 24px;
  }

  .page-contact .desk {
    padding-top: 44px;
  }

  .page-contact .desk-grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(280px, 0.88fr);
    gap: 34px;
  }

  .page-contact .desk-rail {
    position: sticky;
    top: calc(var(--header-h-compact) + 18px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .region-layer {
    transition: none;
  }
}