.page-contact {
  --co-gap: 18px;
  --co-pane-line: #22304A;
  padding-top: calc(var(--header-h) + 34px);
  padding-bottom: 40px;
}

.page-contact .co-band {
  padding-bottom: 10px;
}

/* ---------- Hero ---------- */
.page-contact .co-hero {
  display: grid;
  gap: 30px;
  margin-top: 22px;
  align-items: center;
}

.page-contact .co-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-sans);
  font-size: clamp(30px, 7.2vw, 52px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-contact .co-hero .sb-lede {
  margin-top: 18px;
  max-width: 60ch;
}

.page-contact .co-hero__pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.page-contact .co-hero__figure {
  margin: 0;
}

.page-contact .co-hero__figure .sb-media {
  border: 1px solid var(--line);
  border-radius: 2px;
  position: relative;
}

.page-contact .co-hero__figure .sb-media::after {
  content: "";
  position: absolute;
  inset: 0;
  border-top: 2px solid var(--cyan);
  opacity: 0.7;
  pointer-events: none;
}

.page-contact .co-cap {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- 渠道选择器 ---------- */
.page-contact .co-chooser {
  margin-top: 28px;
}

.page-contact .co-switch {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: 0;
  padding: 0;
  opacity: 0;
  pointer-events: none;
}

.page-contact .co-pills {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.page-contact .co-pill {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 15px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: var(--panel);
  color: var(--muted);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-contact .co-pill__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--faint);
  transition: color var(--dur) var(--ease);
}

.page-contact .co-pill:hover {
  background: var(--raised);
  border-color: var(--line);
  color: var(--text);
}

.page-contact #co-tab-account:checked ~ .co-pills .co-pill[for="co-tab-account"],
.page-contact #co-tab-data:checked ~ .co-pills .co-pill[for="co-tab-data"],
.page-contact #co-tab-tablet:checked ~ .co-pills .co-pill[for="co-tab-tablet"],
.page-contact #co-tab-partner:checked ~ .co-pills .co-pill[for="co-tab-partner"] {
  background: var(--cyan-12);
  border-color: var(--cyan);
  color: var(--text);
}

.page-contact #co-tab-account:checked ~ .co-pills .co-pill[for="co-tab-account"] .co-pill__idx,
.page-contact #co-tab-data:checked ~ .co-pills .co-pill[for="co-tab-data"] .co-pill__idx,
.page-contact #co-tab-tablet:checked ~ .co-pills .co-pill[for="co-tab-tablet"] .co-pill__idx,
.page-contact #co-tab-partner:checked ~ .co-pills .co-pill[for="co-tab-partner"] .co-pill__idx {
  color: var(--cyan);
}

.page-contact #co-tab-account:focus-visible ~ .co-pills .co-pill[for="co-tab-account"],
.page-contact #co-tab-data:focus-visible ~ .co-pills .co-pill[for="co-tab-data"],
.page-contact #co-tab-tablet:focus-visible ~ .co-pills .co-pill[for="co-tab-tablet"],
.page-contact #co-tab-partner:focus-visible ~ .co-pills .co-pill[for="co-tab-partner"] {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-contact .co-panes {
  margin-top: 14px;
  padding: 22px 20px 24px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--cyan);
  border-radius: 2px;
  background: var(--panel);
}

.page-contact .co-pane {
  display: none;
}

.page-contact #co-tab-account:checked ~ .co-panes .co-pane--account,
.page-contact #co-tab-data:checked ~ .co-panes .co-pane--data,
.page-contact #co-tab-tablet:checked ~ .co-panes .co-pane--tablet,
.page-contact #co-tab-partner:checked ~ .co-panes .co-pane--partner {
  display: block;
}

.page-contact .co-pane h3 {
  margin: 0 0 12px;
  font-size: 20px;
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-contact .co-pane > p {
  margin: 0 0 18px;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--muted);
}

.page-contact .co-pane__more {
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--faint);
}

.page-contact .co-kv {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--co-pane-line);
}

.page-contact .co-kv li {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 4px 14px;
  padding: 11px 0;
  border-bottom: 1px solid var(--co-pane-line);
}

.page-contact .co-kv__k {
  font-size: 13.5px;
  letter-spacing: 0.02em;
  color: var(--faint);
}

.page-contact .co-kv__v {
  font-family: var(--font-mono);
  font-size: 13.5px;
  letter-spacing: 0.02em;
  color: var(--text);
}

.page-contact .co-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 225, 208, 0.35);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-contact .co-link:hover {
  border-bottom-color: var(--cyan);
  color: #6ff0e3;
}

.page-contact .co-link:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 分栏说明 ---------- */
.page-contact .co-split__inner {
  display: grid;
  gap: 22px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.page-contact .co-split__aside h2 {
  margin: 12px 0 0;
}

.page-contact .co-addr {
  margin: 16px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(15px, 3.4vw, 18px);
  line-height: 1.5;
  letter-spacing: 0.01em;
  color: var(--cyan);
  word-break: break-all;
}

.page-contact .co-addr--wide {
  margin-top: 0;
  color: var(--amber);
  font-size: clamp(15px, 3.2vw, 17px);
}

.page-contact .co-aside-note {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--faint);
}

.page-contact .co-split__body .sb-h3 {
  margin-top: 0;
}

.page-contact .co-split__body .sb-text {
  margin-bottom: 14px;
}

.page-contact .co-split__body .sb-list-tick {
  margin: 0 0 16px;
}

/* ---------- 平板端反馈 ---------- */
.page-contact .co-tablet {
  background: linear-gradient(180deg, rgba(10, 42, 51, 0) 0%, rgba(10, 42, 51, 0.55) 58%, rgba(10, 42, 51, 0) 100%);
}

.page-contact .co-tablet__grid {
  display: grid;
  gap: 26px;
  align-items: start;
}

.page-contact .co-tablet__figure {
  margin: 0;
}

.page-contact .co-tablet__figure .sb-media {
  border: 1px solid var(--line);
  border-radius: 2px;
  position: relative;
}

.page-contact .co-tablet__figure .sb-media::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 46%;
  height: 3px;
  background: var(--violet);
  opacity: 0.85;
  pointer-events: none;
  z-index: 2;
}

/* ---------- 协作洽谈 ---------- */
.page-contact .co-partner__grid {
  display: grid;
  gap: 30px;
  align-items: start;
}

.page-contact .co-partner__body .sb-text {
  margin-bottom: 14px;
}

.page-contact .co-partner__body .sb-h3 {
  margin: 26px 0 12px;
}

.page-contact .co-brief {
  padding: 22px 20px 20px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: var(--panel);
}

.page-contact .co-brief .sb-label {
  display: block;
  margin-bottom: 14px;
}

.page-contact .co-brief__row {
  display: grid;
  gap: 6px;
  padding: 13px 0;
  border-top: 1px dashed var(--co-pane-line);
}

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

.page-contact .co-brief__val {
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--text);
}

.page-contact .co-brief__foot {
  margin: 18px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--co-pane-line);
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 响应节奏 ---------- */
.page-contact .co-table-cap {
  padding: 0 0 12px;
  text-align: left;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--faint);
}

.page-contact .co-sla-note {
  margin: 20px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--amber);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 收尾 ---------- */
.page-contact .co-end {
  padding-top: 12px;
}

.page-contact .co-endnote {
  margin: 22px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--faint);
}

/* ---------- 响应式 ---------- */
@media (min-width: 768px) {
  .page-contact .co-pills {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
  }

  .page-contact .co-pill {
    padding: 16px 18px;
  }

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

  .page-contact .co-tablet__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: 40px;
    align-items: center;
  }

  .page-contact .co-split__inner {
    padding-top: 34px;
  }
}

@media (min-width: 900px) {
  .page-contact .co-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    margin-top: 28px;
  }

  .page-contact .co-split__inner {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: 52px;
    align-items: start;
  }

  .page-contact .co-split--flip .co-split__inner {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
  }

  .page-contact .co-split--flip .co-split__aside {
    order: 2;
  }

  .page-contact .co-split--flip .co-split__body {
    order: 1;
  }

  .page-contact .co-partner__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 56px;
  }

  .page-contact .co-brief {
    padding: 28px 26px 24px;
    margin-top: 26px;
  }
}

@media (min-width: 1100px) {
  .page-contact .co-hero__cap {
    max-width: 34ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .co-pill,
  .page-contact .co-link,
  .page-contact .co-pill__idx {
    transition: none;
  }
}