.page-contact {
  --co-cut: 26px;
  --co-spec-label: 140px;
  background: var(--ink);
  color: var(--paper);
  overflow-x: hidden;
}

.page-contact h1,
.page-contact h2,
.page-contact h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 0.98;
}

.page-contact p {
  margin: 0;
}

.page-contact .num,
.page-contact .co-mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* ---------- 首屏 ---------- */
.page-contact .co-hero {
  position: relative;
  padding: 40px 0 0;
  background:
    linear-gradient(180deg, rgba(255, 94, 26, 0.13), rgba(10, 10, 10, 0) 58%),
    var(--ink);
}

.page-contact .co-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.045) 0 1px,
    transparent 1px 80px
  );
}

.page-contact .co-hero-inner {
  position: relative;
  z-index: 1;
}

.page-contact .co-crumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 30px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--fog);
}

.page-contact .co-crumbs a {
  color: var(--fog);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-contact .co-crumbs a:hover,
.page-contact .co-crumbs a:focus-visible {
  color: var(--lava);
  border-bottom-color: var(--lava);
}

.page-contact .co-crumbs [aria-current="page"] {
  color: var(--paper);
}

.page-contact .co-hero-grid {
  display: grid;
  gap: 30px;
}

.page-contact .co-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--lava);
}

.page-contact .co-tag-num {
  display: inline-block;
  padding: 2px 7px;
  background: var(--lava);
  color: var(--ink);
  font-weight: 700;
}

.page-contact .co-hero h1 {
  margin: 0 0 22px;
  font-size: clamp(36px, 8.2vw, 92px);
  color: var(--paper);
}

.page-contact .co-lede {
  max-width: 34em;
  margin: 0 0 30px;
  font-size: 17px;
  line-height: 1.9;
  color: var(--fog);
}

.page-contact .co-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-contact .co-hero-figure {
  margin: 0;
}

.page-contact .co-hero-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 12 / 7;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--co-cut)), calc(100% - var(--co-cut)) 100%, 0 100%);
}

.page-contact .co-hero-figure figcaption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--fog-dim);
}

.page-contact .co-hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 44px 0 0;
  padding: 0;
  list-style: none;
  background: var(--steel);
  border-top: 1px solid var(--steel);
  border-bottom: 1px solid var(--steel);
}

.page-contact .co-hero-stats li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 14px;
  background: var(--ink);
}

.page-contact .co-stat-num {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-contact .co-hero-stats li:first-child .co-stat-num {
  color: var(--amber);
}

.page-contact .co-stat-key {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--fog);
}

/* ---------- 通用章节 ---------- */
.page-contact .co-section {
  padding: 56px 0;
  border-top: 1px solid var(--steel);
}

.page-contact .co-head {
  display: grid;
  gap: 14px;
  max-width: 780px;
  margin-bottom: 34px;
}

.page-contact .co-kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--lava);
}

.page-contact .co-head h2 {
  font-size: clamp(26px, 5.4vw, 52px);
  color: var(--paper);
}

.page-contact .co-head-note {
  font-size: 16px;
  line-height: 1.85;
  color: var(--fog);
}

/* ---------- 合作矩阵 ---------- */
.page-contact .co-matrix {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-contact .co-type {
  position: relative;
  padding: 26px 22px 24px;
  background: var(--graphite);
  border: 1px solid var(--steel);
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 0 100%);
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-contact .co-type::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 0;
  background: var(--lava);
  transition: height 0.3s var(--ease);
}

.page-contact .co-type:hover,
.page-contact .co-type:focus-within {
  background: #1c1c1c;
  border-color: #3a3a3a;
}

.page-contact .co-type:hover::after,
.page-contact .co-type:focus-within::after {
  height: 100%;
}

.page-contact .co-type-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  margin-bottom: 16px;
  background: var(--lava);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
}

.page-contact .co-type h3 {
  margin-bottom: 10px;
  font-size: 24px;
  color: var(--paper);
}

.page-contact .co-type-for {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ember);
}

.page-contact .co-type p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--fog);
}

.page-contact .co-type-more {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--steel);
  font-size: 13.5px !important;
  color: var(--fog-dim) !important;
}

/* ---------- 流程 ---------- */
.page-contact .co-process-figure {
  margin: 0 0 34px;
}

.page-contact .co-process-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 2 / 1;
  border: 1px solid var(--steel);
}

.page-contact .co-process-figure figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--fog-dim);
}

.page-contact .co-flow {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .co-flow li {
  position: relative;
  padding-left: 26px;
}

.page-contact .co-flow li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 8px;
  height: 8px;
  background: var(--lava);
}

.page-contact .co-flow li::after {
  content: "";
  position: absolute;
  left: 3px;
  top: 21px;
  bottom: -16px;
  width: 1px;
  background: var(--steel);
}

.page-contact .co-flow li:last-child::after {
  display: none;
}

.page-contact .co-node {
  display: flex;
  flex-direction: column;
  gap: 4px;
  text-decoration: none;
  color: inherit;
  outline-offset: 4px;
}

.page-contact .co-node:focus-visible {
  outline: 2px solid var(--lava);
}

.page-contact .co-node-idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--lava);
}

.page-contact .co-node-name {
  font-family: var(--font-display);
  font-size: 21px;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .co-node-time {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--fog-dim);
}

.page-contact .co-node:hover .co-node-name,
.page-contact .co-node:focus-visible .co-node-name {
  color: var(--ember);
}

.page-contact .co-stages {
  display: grid;
  gap: 12px;
  margin-top: 34px;
}

.page-contact .co-stage {
  padding: 22px 20px;
  background: var(--graphite);
  border: 1px solid var(--steel);
  border-left: 3px solid var(--steel);
  scroll-margin-top: 80px;
  transition: background 0.2s var(--ease), border-left-color 0.2s var(--ease);
}

.page-contact .co-stage:target {
  background: #1d1d1d;
  border-left-color: var(--lava);
}

.page-contact .co-stage h3 {
  margin-bottom: 10px;
  font-size: 19px;
  color: var(--paper);
}

.page-contact .co-stage p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--fog);
}

.page-contact .co-stage-out {
  margin-top: 12px !important;
  font-family: var(--font-mono);
  font-size: 12.5px !important;
  color: var(--amber) !important;
}

.page-contact .co-stage-out span {
  display: inline-block;
  margin-right: 8px;
  padding: 1px 6px;
  background: var(--amber);
  color: var(--ink);
  font-weight: 700;
}

/* ---------- 交付规格 ---------- */
.page-contact .co-specs {
  margin: 0;
  border-bottom: 1px solid var(--steel);
}

.page-contact .co-spec-row {
  display: grid;
  gap: 8px;
  padding: 20px 0;
  border-top: 1px solid var(--steel);
}

.page-contact .co-spec-row dt {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--lava);
}

.page-contact .co-spec-row dd {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--fog);
}

/* ---------- 响应约定（纸白段） ---------- */
.page-contact .co-section--paper {
  background: var(--paper);
  color: var(--ink-text);
}

.page-contact .co-section--paper .co-head h2 {
  color: var(--ink-text);
}

.page-contact .co-section--paper .co-kicker {
  padding-left: 10px;
  border-left: 18px solid var(--lava);
  color: var(--ink-text);
}

.page-contact .co-response-grid {
  display: grid;
  gap: 14px;
}

.page-contact .co-response {
  padding: 24px 22px;
  background: #fff;
  border: 1px solid #d9d5cd;
}

.page-contact .co-response h3 {
  margin-bottom: 12px;
  font-size: 21px;
  color: var(--ink-text);
}

.page-contact .co-response p {
  font-size: 15.5px;
  line-height: 1.85;
  color: #4a4741;
}

.page-contact .co-response .co-mono {
  padding: 0 3px;
  color: var(--ink-text);
  font-weight: 700;
}

.page-contact .co-response-note {
  margin-top: 14px !important;
  padding-top: 12px;
  border-top: 1px solid #ddd9d1;
  font-family: var(--font-mono);
  font-size: 12.5px !important;
  color: #6b665e !important;
}

/* ---------- 联系面板 ---------- */
.page-contact .co-panel {
  position: relative;
  background: var(--graphite);
  border: 1px solid var(--steel);
  clip-path: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 0 100%);
}

.page-contact .co-panel-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 22px;
  border-bottom: 1px solid var(--steel);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--electric);
}

.page-contact .co-pulse {
  width: 8px;
  height: 8px;
  background: var(--electric);
  animation: co-pulse 2.4s ease-in-out infinite;
}

@keyframes co-pulse {
  0%,
  100% {
    opacity: 1;
    box-shadow: 0 0 0 0 rgba(30, 144, 255, 0.55);
  }
  50% {
    opacity: 0.45;
    box-shadow: 0 0 0 7px rgba(30, 144, 255, 0);
  }
}

.page-contact .co-panel-rows {
  margin: 0;
}

.page-contact .co-panel-row {
  display: grid;
  gap: 5px;
  padding: 18px 22px;
  border-top: 1px solid var(--steel);
}

.page-contact .co-panel-row:first-child {
  border-top: 0;
}

.page-contact .co-panel-row dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--fog-dim);
}

.page-contact .co-panel-row dd {
  margin: 0;
  font-size: 16px;
  line-height: 1.7;
  color: var(--paper);
  word-break: break-word;
}

.page-contact .co-mono--amber {
  color: var(--amber);
  font-size: 17px;
  letter-spacing: 0.02em;
}

.page-contact .co-panel-note {
  padding: 16px 22px 20px;
  border-top: 1px solid var(--steel);
  font-size: 13px;
  line-height: 1.8;
  color: var(--fog-dim);
}

.page-contact .co-panel-note a {
  color: var(--ember);
  text-decoration: none;
  border-bottom: 1px solid var(--lava);
}

.page-contact .co-panel-note a:hover,
.page-contact .co-panel-note a:focus-visible {
  color: var(--paper);
}

/* ---------- 收尾 ---------- */
.page-contact .co-end {
  padding: 0 0 56px;
}

.page-contact .co-end-line {
  display: block;
  height: 3px;
  margin-bottom: 20px;
  background: linear-gradient(90deg, var(--lava), var(--ember));
}

.page-contact .co-end-note {
  max-width: 62em;
  font-size: 13.5px;
  line-height: 1.9;
  color: var(--fog-dim);
}

.page-contact .co-end-note a {
  color: var(--fog);
  text-decoration: none;
  border-bottom: 1px solid var(--steel);
}

.page-contact .co-end-note a:hover,
.page-contact .co-end-note a:focus-visible {
  color: var(--lava);
  border-bottom-color: var(--lava);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-contact .co-hero-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .co-matrix {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .page-contact .co-flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
    margin-top: 6px;
  }

  .page-contact .co-flow li {
    padding: 26px 18px 0 0;
  }

  .page-contact .co-flow li::before {
    top: 0;
    left: 0;
  }

  .page-contact .co-flow li::after {
    left: 14px;
    right: 18px;
    top: 3px;
    bottom: auto;
    width: auto;
    height: 1px;
  }

  .page-contact .co-stages {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .page-contact .co-spec-row {
    grid-template-columns: var(--co-spec-label) minmax(0, 1fr);
    gap: 28px;
    align-items: baseline;
  }

  .page-contact .co-response-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .page-contact .co-panel-row {
    grid-template-columns: 120px minmax(0, 1fr);
    gap: 24px;
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-contact .co-hero {
    padding-top: 52px;
  }

  .page-contact .co-hero-grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: 52px;
    align-items: start;
  }

  .page-contact .co-section {
    padding: 88px 0;
  }

  .page-contact .co-head {
    margin-bottom: 44px;
  }

  .page-contact .co-type {
    padding: 30px 26px 28px;
  }

  .page-contact .co-panel-row dd {
    font-size: 17px;
  }

  .page-contact .co-mono--amber {
    font-size: 19px;
  }
}

@media (min-width: 1280px) {
  .page-contact {
    --co-spec-label: 200px;
  }

  .page-contact .co-lede {
    font-size: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .co-pulse {
    animation: none;
  }

  .page-contact .co-type,
  .page-contact .co-type::after,
  .page-contact .co-stage,
  .page-contact .co-crumbs a {
    transition: none;
  }
}
<<<PAGE_CSS_END>>>