.page-contact {
  --co-side-width: 336px;
  --co-node-size: 44px;
  padding-bottom: 0;
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 20px 0 0;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--muted);
}
.page-contact .breadcrumb a {
  color: var(--silver);
  text-decoration: none;
  transition: color .2s var(--ease);
}
.page-contact .breadcrumb a:hover,
.page-contact .breadcrumb a:focus-visible {
  color: var(--cyan);
}
.page-contact .breadcrumb [aria-current="page"] {
  color: var(--cyan);
}

/* ---------- 首屏 ---------- */
.page-contact .co-hero {
  position: relative;
  isolation: isolate;
  display: grid;
  gap: 28px;
  padding: 30px 0 44px;
  border-bottom: var(--edge-strong);
}
.page-contact .co-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -12px;
  right: 0;
  width: min(64%, 620px);
  height: 68%;
  background: var(--grad-night);
  border: var(--hairline);
  clip-path: polygon(16% 0, 100% 0, 100% 100%, 0 86%);
  pointer-events: none;
}
.page-contact .co-hero-text {
  min-width: 0;
}
.page-contact .co-hero .lede {
  max-width: 40ch;
  margin: 18px 0 0;
}
.page-contact .co-hero-facts {
  list-style: none;
  margin: 28px 0 0;
  padding: 20px 0 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 18px;
  border-top: var(--hairline);
}
.page-contact .co-hero-facts li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--muted);
}
.page-contact .co-hero-facts .mono {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--cyan);
  line-height: 1;
}
.page-contact .co-hero-facts .mono i {
  font-style: normal;
  font-size: 13px;
  margin-left: 2px;
  letter-spacing: .02em;
}
.page-contact .co-hero-media {
  margin: 0;
  position: relative;
  aspect-ratio: 3 / 2;
  border: var(--edge-strong);
  background: var(--panel-deep);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}
.page-contact .co-hero-media::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 96px;
  height: 6px;
  background: var(--orange);
}
.page-contact .co-hero-media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 双栏骨架 ---------- */
.page-contact .co-layout {
  display: grid;
  gap: 40px;
  padding-top: 46px;
}
.page-contact .co-main {
  min-width: 0;
}
.page-contact .co-side {
  min-width: 0;
}

/* ---------- 章节通用 ---------- */
.page-contact .co-block + .co-block {
  margin-top: 54px;
  padding-top: 46px;
  border-top: var(--hairline);
}
.page-contact .co-block-lede {
  margin: 12px 0 0;
  max-width: 44ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 合作方向 ---------- */
.page-contact .co-direction-grid {
  display: grid;
  gap: 14px;
  margin-top: 28px;
}
.page-contact .co-direction {
  position: relative;
  padding: 20px 18px 18px;
  background: var(--panel);
  border: var(--edge);
  box-shadow: var(--shadow-soft);
  transition: border-color .24s var(--ease), transform .24s var(--ease);
}
.page-contact .co-direction::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 38px;
  background: var(--cyan);
}
.page-contact .co-direction:hover {
  border-color: var(--cyan);
  transform: translateY(-3px);
}
.page-contact .co-dir-index {
  display: block;
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--orange);
}
.page-contact .co-dir-title {
  margin: 8px 0 10px;
  font-family: var(--font-display);
  font-size: 19px;
  letter-spacing: .03em;
  line-height: 1.3;
  color: var(--white);
}
.page-contact .co-dir-body {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--silver);
}
.page-contact .co-dir-fit {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding-top: 13px;
  border-top: var(--hairline);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--muted);
}
.page-contact .co-dir-fit .tag {
  font-size: 11px;
  letter-spacing: .08em;
}

/* ---------- 合作流程 ---------- */
.page-contact .co-steps {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
}
.page-contact .co-step {
  position: relative;
  display: grid;
  grid-template-columns: var(--co-node-size) minmax(0, 1fr);
  gap: 16px;
  padding-bottom: 32px;
}
.page-contact .co-step:last-child {
  padding-bottom: 0;
}
.page-contact .co-step::before {
  content: "";
  position: absolute;
  left: 21px;
  top: calc(var(--co-node-size) + 6px);
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, rgba(34, 224, 214, .55), rgba(34, 224, 214, .06));
}
.page-contact .co-step:last-child::before {
  display: none;
}
.page-contact .co-step-num {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--co-node-size);
  height: var(--co-node-size);
  border: 2px solid var(--cyan);
  background: var(--ink);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .02em;
}
.page-contact .co-step:last-child .co-step-num {
  border-color: var(--orange);
  color: var(--orange);
}
.page-contact .co-step-content {
  min-width: 0;
}
.page-contact .co-step-title {
  margin: 9px 0 10px;
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: .04em;
  color: var(--white);
}
.page-contact .co-step-content > p {
  margin: 0 0 12px;
  max-width: 44ch;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--silver);
}
.page-contact .co-step-need {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 9px;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--muted);
}
.page-contact .co-step-need .tag {
  font-size: 11px;
  letter-spacing: .08em;
}

/* ---------- 渠道分流 ---------- */
.page-contact .co-routing {
  display: grid;
  gap: 16px;
  margin-top: 28px;
}
.page-contact .co-route-col {
  padding: 22px 20px;
  background: var(--panel-deep);
  border: var(--edge);
}
.page-contact .co-route-coop {
  box-shadow: inset 3px 0 0 var(--orange);
}
.page-contact .co-route-ops {
  box-shadow: inset 3px 0 0 var(--cyan);
}
.page-contact .co-route-col h3 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: 16px;
  letter-spacing: .08em;
  color: var(--white);
}
.page-contact .co-route-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 11px;
}
.page-contact .co-route-col li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--silver);
}
.page-contact .co-route-col li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: 8px;
  height: 2px;
  background: var(--muted);
}
.page-contact .co-route-col a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 224, 214, .4);
  transition: color .2s var(--ease);
}
.page-contact .co-route-col a:hover,
.page-contact .co-route-col a:focus-visible {
  color: var(--white);
  border-bottom-color: var(--white);
}
.page-contact .co-route-note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: var(--hairline);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 联系方式卡 ---------- */
.page-contact .co-contact-card {
  background: var(--panel);
  border: var(--edge-strong);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}
.page-contact .co-contact-media {
  margin: 0;
  aspect-ratio: 16 / 9;
  border-bottom: var(--edge);
  background: var(--panel-deep);
}
.page-contact .co-contact-media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}
.page-contact .co-contact-inner {
  padding: 22px 20px 24px;
}
.page-contact .co-contact-title {
  margin: 6px 0 20px;
  font-family: var(--font-display);
  font-size: 22px;
  letter-spacing: .04em;
  color: var(--white);
}
.page-contact .co-contact-list {
  margin: 0;
  display: grid;
  gap: 0;
}
.page-contact .co-contact-item {
  padding: 14px 0;
  border-bottom: var(--hairline);
}
.page-contact .co-contact-item:first-child {
  padding-top: 0;
}
.page-contact .co-contact-item:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}
.page-contact .co-contact-key {
  margin: 0 0 5px;
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--muted);
}
.page-contact .co-contact-val {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--text);
  word-break: break-word;
}
.page-contact .co-contact-val.mono {
  font-family: var(--font-mono);
  letter-spacing: .01em;
}
.page-contact .co-contact-note {
  margin: 20px 0 0;
  padding: 12px 14px;
  background: rgba(34, 224, 214, .07);
  border-left: 2px solid var(--cyan);
  font-size: 12.5px;
  line-height: 1.72;
  color: var(--muted);
}

/* ---------- 收束区 ---------- */
.page-contact .co-closing {
  margin-top: 56px;
  padding: 0 0 64px;
}
.page-contact .co-closing-inner {
  position: relative;
  overflow: hidden;
  display: grid;
  gap: 26px;
  padding: 32px 22px;
  background: var(--grad-night);
  border: var(--edge-strong);
  box-shadow: var(--shadow-hard);
}
.page-contact .co-closing-inner::before {
  content: "";
  position: absolute;
  right: -66px;
  bottom: -66px;
  width: 210px;
  height: 210px;
  background: var(--orange);
  opacity: .16;
  transform: rotate(-14deg);
  pointer-events: none;
}
.page-contact .co-closing-inner::after {
  content: "";
  position: absolute;
  right: 26px;
  bottom: -52px;
  width: 168px;
  height: 168px;
  border: 2px solid rgba(34, 224, 214, .3);
  transform: rotate(18deg);
  pointer-events: none;
}
.page-contact .co-closing-copy {
  position: relative;
  z-index: 1;
  min-width: 0;
}
.page-contact .co-closing-title {
  margin: 10px 0 12px;
  font-family: var(--font-display);
  font-size: 24px;
  letter-spacing: .03em;
  line-height: 1.3;
  color: var(--white);
}
.page-contact .co-closing-copy > p:last-child {
  margin: 0;
  max-width: 38ch;
  font-size: 14px;
  line-height: 1.78;
  color: var(--silver);
}
.page-contact .co-closing-links {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 10px;
}
.page-contact .co-closing-link {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  align-items: center;
  column-gap: 12px;
  padding: 14px 16px;
  background: rgba(11, 14, 18, .55);
  border: var(--edge);
  text-decoration: none;
  transition: border-color .24s var(--ease), transform .24s var(--ease), background-color .24s var(--ease);
}
.page-contact .co-closing-link:hover,
.page-contact .co-closing-link:focus-visible {
  border-color: var(--cyan);
  background: rgba(11, 14, 18, .8);
  transform: translateX(4px);
}
.page-contact .co-link-idx {
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--orange);
}
.page-contact .co-link-title {
  font-family: var(--font-display);
  font-size: 15px;
  letter-spacing: .06em;
  color: var(--white);
}
.page-contact .co-link-desc {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 焦点环 ---------- */
.page-contact a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-contact .co-direction-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-contact .co-hero-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-contact .co-routing {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-contact .co-closing-inner {
    grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
    gap: 36px;
    padding: 40px 34px;
    align-items: center;
  }
  .page-contact .co-closing-title {
    font-size: 28px;
  }
}

@media (min-width: 900px) {
  .page-contact .co-hero {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: center;
    gap: 52px;
    padding: 44px 0 56px;
  }
  .page-contact .co-layout {
    padding-top: 56px;
  }
}

@media (min-width: 1040px) {
  .page-contact .co-layout {
    grid-template-columns: minmax(0, 1fr) var(--co-side-width);
    gap: 52px;
    align-items: start;
  }
  .page-contact .co-side {
    position: sticky;
    top: 84px;
  }
  .page-contact .co-block + .co-block {
    margin-top: 62px;
    padding-top: 52px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .co-direction,
  .page-contact .co-closing-link {
    transition: none;
  }
  .page-contact .co-direction:hover,
  .page-contact .co-closing-link:hover {
    transform: none;
  }
}