.page-contact {
  --co-line: rgba(30, 140, 119, 0.28);
  --co-gap: clamp(18px, 3vw, 34px);
  --co-ink-soft: rgba(11, 26, 21, 0.78);
  background: var(--ink);
  color: var(--white);
}

.page-contact .co-hero {
  padding-top: clamp(18px, 3vw, 36px);
}

.page-contact .co-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--co-gap);
  margin-top: clamp(22px, 4vw, 40px);
  align-items: start;
}

/* 左侧联络台 */
.page-contact .co-contact {
  background: var(--pitch);
  border: 1px solid var(--co-line);
  border-top: 2px solid var(--cyan);
  border-radius: var(--radius);
  padding: clamp(20px, 3vw, 30px);
}

.page-contact .co-contact__eyebrow {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--cyan);
}

.page-contact .co-contact h2 {
  margin: 0 0 18px;
  color: var(--white);
}

.page-contact .co-lines {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .co-lines li {
  padding: 14px 0;
  border-bottom: 1px solid var(--line-mid);
}

.page-contact .co-lines li:first-child {
  border-top: 1px solid var(--line-mid);
}

.page-contact .co-lines__k {
  display: block;
  margin-bottom: 6px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.page-contact .co-lines__v {
  display: block;
  font-size: clamp(14px, 2.2vw, 17px);
  line-height: 1.5;
  word-break: break-word;
  color: var(--white);
}

.page-contact .co-lines__v--mail {
  color: var(--cyan);
}

.page-contact .co-lines__v--addr {
  color: var(--paper);
}

.page-contact .co-note {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .co-toc {
  display: grid;
  gap: 8px;
  margin: 22px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--line-mid);
}

.page-contact .co-toc .toc-link {
  font-size: 14px;
  color: var(--mist);
  text-decoration: none;
  transition: color 0.25s var(--ease);
}

.page-contact .co-toc .toc-link:hover,
.page-contact .co-toc .toc-link[aria-current="true"] {
  color: var(--cyan);
}

/* 右侧导语 */
.page-contact .co-lead {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-contact .co-lead .vlabel {
  display: none;
}

.page-contact .co-lead__body h1 {
  margin: 0 0 18px;
}

.page-contact .co-lead__body p {
  margin: 0;
  color: var(--paper);
  max-width: 64ch;
}

.page-contact .co-stats {
  list-style: none;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--line-soft);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 22px;
}

.page-contact .co-stats li {
  display: grid;
  gap: 5px;
}

.page-contact .co-stats .num {
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1;
  color: var(--flame);
}

.page-contact .co-stats li > span:last-child {
  font-size: 13px;
  line-height: 1.5;
  color: var(--mist);
}

.page-contact .co-hero__media {
  margin: clamp(26px, 4vw, 44px) 0 0;
}

.page-contact .figure-caption {
  margin-top: 10px;
}

/* 章节头 */
.page-contact .co-head {
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-contact .co-head .t-title {
  margin: 0 0 12px;
}

.page-contact .co-head .t-body {
  margin: 0;
  max-width: 68ch;
  color: var(--mist);
}

/* 合作方向 */
.page-contact .co-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .co-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  padding: clamp(20px, 3vw, 28px) 0;
  border-top: 1px solid var(--co-line);
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease),
    background-color 0.3s var(--ease);
}

.page-contact .co-item:last-child {
  border-bottom: 1px solid var(--co-line);
}

.page-contact .co-item:hover {
  transform: translateY(-2px);
  border-color: var(--line-cyan);
  background: rgba(18, 48, 39, 0.45);
}

.page-contact .co-item__no {
  font-size: clamp(30px, 4.4vw, 42px);
  line-height: 1;
  color: var(--cyan-dim);
  transition: color 0.3s var(--ease);
}

.page-contact .co-item:hover .co-item__no {
  color: var(--cyan);
}

.page-contact .co-item h3 {
  margin: 0 0 10px;
  color: var(--white);
}

.page-contact .co-item .t-body {
  margin: 0 0 10px;
  color: var(--paper);
}

.page-contact .co-item__eg {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .co-item__fit {
  margin: 0;
  font-size: 13px;
  color: var(--amber);
}

/* 对接流程 */
.page-contact .co-flow__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--co-gap);
}

.page-contact .co-steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .co-step {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  padding: 18px 0;
  border-top: 1px solid var(--co-line);
}

.page-contact .co-step:last-child {
  border-bottom: 1px solid var(--co-line);
}

.page-contact .co-step__no {
  font-size: clamp(34px, 5vw, 40px);
  line-height: 1;
  color: var(--flame);
}

.page-contact .co-step h3 {
  margin: 0 0 8px;
  color: var(--white);
}

.page-contact .co-step .t-body {
  margin: 0;
  color: var(--paper);
}

.page-contact .co-flow__media {
  margin: 0;
  align-self: start;
}

/* 全宽浅底条 */
.page-contact .co-band {
  background: var(--paper);
  color: var(--ink);
  padding: clamp(34px, 6vw, 64px) 0;
}

.page-contact .co-band__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 40px);
}

.page-contact .co-band__title {
  margin: 0 0 16px;
  color: var(--ink);
}

.page-contact .co-band__addr {
  display: inline-block;
  margin: 0;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--flame);
  font-family: var(--font-num);
  font-size: clamp(15px, 2vw, 19px);
  line-height: 1.6;
  color: var(--ink);
}

.page-contact .co-band__text p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--co-ink-soft);
}

.page-contact .co-band__text p:last-child {
  margin-bottom: 0;
}

/* 常见咨询折叠面板 */
.page-contact .co-acc {
  max-width: 820px;
  border-top: 1px solid var(--co-line);
}

.page-contact .co-acc__item {
  position: relative;
  border-bottom: 1px solid var(--co-line);
}

.page-contact .co-acc__trigger {
  position: relative;
  display: block;
  width: 100%;
  padding: 18px 44px 18px 18px;
  background: none;
  border: 0;
  text-align: left;
  color: var(--white);
  font-family: inherit;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.6;
  cursor: pointer;
  transition: color 0.25s var(--ease);
}

.page-contact .co-acc__trigger::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: transparent;
  transition: background-color 0.25s var(--ease);
}

.page-contact .co-acc__trigger::after {
  content: "+";
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-num);
  font-size: 20px;
  color: var(--cyan-dim);
  transition: color 0.25s var(--ease);
}

.page-contact .co-acc__trigger:hover,
.page-contact .co-acc__trigger[aria-expanded="true"] {
  color: var(--cyan);
}

.page-contact .co-acc__trigger[aria-expanded="true"]::before {
  background: var(--flame);
}

.page-contact .co-acc__trigger[aria-expanded="true"]::after {
  content: "–";
  color: var(--flame);
}

.page-contact .co-acc__panel {
  padding: 0 18px 20px;
}

.page-contact .co-acc__panel[hidden] {
  display: none;
}

.page-contact .co-acc__panel .t-body {
  margin: 0 0 12px;
  color: var(--paper);
}

.page-contact .co-link {
  display: inline-block;
  padding-bottom: 2px;
  font-size: 14px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-cyan);
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-contact .co-link:hover {
  color: var(--flame);
  border-color: var(--flame);
}

/* 收尾 */
.page-contact .co-cta__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  padding: clamp(24px, 4vw, 40px);
  border: 1px solid var(--line-cyan);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(18, 48, 39, 0.72), rgba(11, 26, 21, 0));
}

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

.page-contact .co-cta .t-body {
  margin: 0;
  color: var(--mist);
}

.page-contact .co-cta__side {
  display: grid;
  gap: 10px;
}

.page-contact .co-cta__mail {
  margin: 0;
  font-size: clamp(15px, 2vw, 18px);
  word-break: break-all;
  color: var(--flame);
}

.page-contact .co-cta__tel {
  margin: 0;
  font-size: clamp(20px, 3vw, 28px);
  color: var(--white);
}

/* 响应式栅格 */
@media (min-width: 700px) {
  .page-contact .co-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .co-step {
    grid-template-columns: 76px minmax(0, 1fr);
    gap: 20px;
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-contact .co-hero__grid {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    gap: clamp(28px, 4vw, 56px);
  }

  .page-contact .co-lead {
    grid-template-columns: auto minmax(0, 1fr);
    gap: 20px;
  }

  .page-contact .co-lead .vlabel {
    display: block;
  }

  .page-contact .co-item {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 22px;
    align-items: start;
  }

  .page-contact .co-flow__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: clamp(28px, 4vw, 48px);
  }

  .page-contact .co-band__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
    align-items: start;
  }

  .page-contact .co-cta__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.7fr);
    align-items: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .co-item,
  .page-contact .co-item__no,
  .page-contact .co-acc__trigger,
  .page-contact .co-acc__trigger::before,
  .page-contact .co-acc__trigger::after,
  .page-contact .co-toc .toc-link,
  .page-contact .co-link {
    transition: none;
  }

  .page-contact .co-item:hover {
    transform: none;
  }
}