.page-contact {
  --coop-line: 1px solid var(--line);
  padding-bottom: 56px;
}

.page-contact .breadcrumb {
  padding-top: 18px;
  font-size: 13px;
  color: var(--ink-2);
}

.page-contact .breadcrumb a.link {
  color: var(--ink-2);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--t-fast), border-color var(--t-fast);
}

.page-contact .breadcrumb a.link:hover,
.page-contact .breadcrumb a.link:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-contact .breadcrumb__sep {
  margin: 0 8px;
  color: var(--line);
}

/* ---------- 页首 ---------- */

.page-contact .coop-intro {
  position: relative;
  padding: 26px 0 30px;
  border-bottom: 1px solid var(--line);
}

.page-contact .coop-intro::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 92px;
  height: 2px;
  background: var(--cyan);
}

.page-contact .coop-intro__eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.page-contact .coop-intro__title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 34px;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-contact .coop-intro__lede {
  margin: 0;
  max-width: 36em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-2);
}

.page-contact .coop-intro__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ink-2);
}

.page-contact .coop-intro__meta li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.page-contact .coop-intro__meta li::before {
  content: "";
  flex: none;
  width: 6px;
  height: 6px;
  background: var(--cyan);
  transform: rotate(45deg);
}

/* ---------- 面板间距 ---------- */

.page-contact .panel {
  margin: 28px 0 0;
  background: var(--panel);
  border: 1px solid var(--line);
}

.page-contact .panel__head {
  padding: 20px 18px 16px;
  border-bottom: 1px solid var(--line);
}

.page-contact .panel__body {
  padding: 20px 18px 24px;
}

.page-contact .panel__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 22px;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-contact .panel__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-contact .panel__note {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--ink-2);
}

/* ---------- 图片 ---------- */

.page-contact .media-frame {
  margin: 0;
}

.page-contact .media-frame img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-contact .coop-hero-media {
  margin-bottom: 20px;
}

.page-contact .coop-flow-media {
  margin-top: 24px;
}

/* ---------- P01 合作方向 ---------- */

.page-contact .coop-dirs {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .coop-dir {
  position: relative;
  padding: 22px 18px 24px;
  background: var(--panel);
  transition: background var(--t-fast);
}

.page-contact .coop-dir::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: transparent;
  transition: background var(--t-fast);
}

.page-contact .coop-dir:hover {
  background: var(--panel-2);
}

.page-contact .coop-dir:hover::before {
  background: var(--cyan);
}

.page-contact .coop-dir__num {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--ink-2);
}

.page-contact .coop-dir__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.page-contact .coop-dir__text {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-2);
}

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

.page-contact .coop-dir__list li {
  position: relative;
  padding: 9px 0 9px 16px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
}

.page-contact .coop-dir__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  width: 6px;
  height: 1px;
  background: var(--orange);
}

/* ---------- P02 推进流程 ---------- */

.page-contact .coop-flow {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .coop-flow__step {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 22px 18px 24px;
  background: var(--panel);
}

.page-contact .coop-flow__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 46px;
  height: 30px;
  padding: 0 10px;
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--bg);
  background: var(--cyan);
  clip-path: polygon(6px 0, 100% 0, calc(100% - 6px) 100%, 0 100%);
}

.page-contact .coop-flow__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  color: var(--ink);
}

.page-contact .coop-flow__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-2);
}

.page-contact .coop-flow__toggle {
  margin-top: 16px;
  padding: 4px 0;
  background: none;
  border: 0;
  border-bottom: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink-2);
  cursor: pointer;
  transition: color var(--t-fast), border-color var(--t-fast);
}

.page-contact .coop-flow__toggle:hover,
.page-contact .coop-flow__toggle:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-contact .coop-flow__detail {
  width: 100%;
  margin-top: 14px;
  padding: 14px 14px 6px;
  background: var(--panel-2);
  border: 1px solid var(--line);
}

.page-contact .coop-flow__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .coop-flow__list li {
  position: relative;
  padding: 0 0 10px 16px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink);
}

.page-contact .coop-flow__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 1px;
  background: var(--cyan);
}

/* ---------- P03 落地场景 ---------- */

.page-contact .coop-scenes {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

.page-contact .coop-scene {
  padding: 16px 0 16px 16px;
  border-left: 2px solid var(--line);
  transition: border-color var(--t-fast);
}

.page-contact .coop-scene:hover {
  border-left-color: var(--cyan);
}

.page-contact .coop-scene__tag {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--orange);
}

.page-contact .coop-scene__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  color: var(--ink);
}

.page-contact .coop-scene__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-2);
}

.page-contact .coop-scenes__side {
  padding: 20px 18px;
  background: var(--panel-2);
  border: 1px solid var(--line);
}

.page-contact .coop-scenes__side-title {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.page-contact .coop-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
}

.page-contact .coop-stat {
  padding: 16px 12px;
  background: var(--panel);
}

.page-contact .coop-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 24px;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--cyan);
}

.page-contact .coop-stat:nth-child(2) .coop-stat__num {
  color: var(--orange);
}

.page-contact .coop-stat:nth-child(3) .coop-stat__num {
  color: var(--amber);
}

.page-contact .coop-stat__label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--ink-2);
}

.page-contact .coop-scenes__side-note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-2);
}

/* ---------- P04 联系与选择 ---------- */

.page-contact .coop-contact {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

.page-contact .coop-contact__row {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .coop-contact__row:first-child {
  padding-top: 0;
}

.page-contact .coop-contact__key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.page-contact .coop-contact__val {
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink);
}

.page-contact .coop-contact__val--mono {
  font-family: var(--font-mono);
  font-size: 17px;
  letter-spacing: 0.01em;
  word-break: break-all;
}

.page-contact .coop-contact__for {
  font-size: 13px;
  line-height: 1.65;
  color: var(--ink-2);
}

.page-contact .coop-contact__note {
  margin: 18px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--cyan);
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink);
}

.page-contact .coop-picker {
  position: relative;
  padding: 20px 18px 22px;
  background: var(--panel-2);
  border: 1px solid var(--line);
}

.page-contact .coop-picker__lead {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-2);
}

.page-contact .coop-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.page-contact .coop-picker__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-contact .coop-picker__tab {
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--ink-2);
  background: var(--panel);
  border: 1px solid var(--line);
  cursor: pointer;
  transition: color var(--t-fast), background var(--t-fast), border-color var(--t-fast);
}

.page-contact .coop-picker__tab:hover {
  color: var(--ink);
  border-color: var(--cyan);
}

.page-contact #kind-content:checked ~ .coop-picker__tabs label[for="kind-content"],
.page-contact #kind-data:checked ~ .coop-picker__tabs label[for="kind-data"],
.page-contact #kind-topic:checked ~ .coop-picker__tabs label[for="kind-topic"],
.page-contact #kind-column:checked ~ .coop-picker__tabs label[for="kind-column"] {
  color: var(--bg);
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-contact .coop-picker:has(#kind-content:focus-visible) label[for="kind-content"],
.page-contact .coop-picker:has(#kind-data:focus-visible) label[for="kind-data"],
.page-contact .coop-picker:has(#kind-topic:focus-visible) label[for="kind-topic"],
.page-contact .coop-picker:has(#kind-column:focus-visible) label[for="kind-column"] {
  outline: 2px solid var(--cyan-2);
  outline-offset: 2px;
}

.page-contact .coop-picker__panel {
  display: none;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.page-contact #kind-content:checked ~ .coop-picker__panel--content,
.page-contact #kind-data:checked ~ .coop-picker__panel--data,
.page-contact #kind-topic:checked ~ .coop-picker__panel--topic,
.page-contact #kind-column:checked ~ .coop-picker__panel--column {
  display: block;
}

.page-contact .coop-picker__text {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
}

.page-contact .coop-picker__list {
  margin: 0 0 14px;
  padding: 0;
  list-style: none;
}

.page-contact .coop-picker__list li {
  position: relative;
  padding: 0 0 8px 16px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--ink-2);
}

.page-contact .coop-picker__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 1px;
  background: var(--orange);
}

.page-contact .coop-picker__foot {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: 0.01em;
  color: var(--ink-2);
  word-break: break-all;
}

/* ---------- 底部收束线 ---------- */

.page-contact .coop-tail {
  height: 2px;
  margin: 36px 0 0;
  background: linear-gradient(90deg, var(--cyan) 0%, var(--orange) 55%, transparent 100%);
}

/* ---------- 响应式 ---------- */

@media (min-width: 700px) {
  .page-contact .coop-dirs {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-contact .coop-intro__title {
    font-size: 40px;
  }

  .page-contact .coop-intro__meta {
    gap: 8px 28px;
  }

  .page-contact .panel__head {
    padding: 22px 22px 18px;
  }

  .page-contact .panel__body {
    padding: 24px 22px 28px;
  }

  .page-contact .coop-flow__step,
  .page-contact .coop-dir {
    padding: 24px 22px 26px;
  }
}

@media (min-width: 900px) {
  .page-contact {
    padding-bottom: 72px;
  }

  .page-contact .coop-intro {
    padding: 34px 0 38px;
  }

  .page-contact .coop-intro__title {
    font-size: 48px;
  }

  .page-contact .panel {
    margin-top: 34px;
  }

  .page-contact .coop-flow {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-contact .coop-scenes {
    grid-template-columns: 7fr 5fr;
    gap: 32px;
    align-items: start;
  }

  .page-contact .coop-contact {
    grid-template-columns: 7fr 5fr;
    gap: 32px;
    align-items: start;
  }
}

@media (min-width: 1150px) {
  .page-contact .coop-dirs {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-contact .panel__head {
    padding: 26px 28px 20px;
  }

  .page-contact .panel__body {
    padding: 28px 28px 32px;
  }

  .page-contact .coop-flow__step,
  .page-contact .coop-dir {
    padding: 26px 24px 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .coop-dir,
  .page-contact .coop-dir::before,
  .page-contact .coop-flow__toggle,
  .page-contact .coop-picker__tab,
  .page-contact .coop-scene,
  .page-contact .breadcrumb a.link {
    transition: none;
  }
}
</main>