.page-contact {
  display: block;
  position: relative;
  background: var(--c-navy-deep);
  color: var(--c-white);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: 1.9;
  overflow-x: clip;
}

.page-contact .co-crumb {
  padding-top: 22px;
  padding-bottom: 6px;
}

.page-contact .co-hero,
.page-contact .kb-section,
.page-contact .co-closing {
  scroll-margin-top: calc(var(--header-h) + 18px);
}

/* ---------- 首屏 ---------- */

.page-contact .co-hero {
  position: relative;
  padding: 14px 0 54px;
}

.page-contact .co-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--c-gold-line) 24%, var(--c-gold-line) 68%, transparent 100%);
}

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

.page-contact .co-hero__title {
  margin: 12px 0 0;
  font-size: clamp(30px, 7.2vw, 56px);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -0.012em;
  color: var(--c-white);
}

.page-contact .co-hero__lead {
  margin: 18px 0 0;
  max-width: 36em;
  font-size: var(--fs-body);
  line-height: 1.95;
  color: rgba(244, 247, 251, 0.78);
}

.page-contact .co-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-contact .co-hero__aside {
  position: relative;
  padding: 26px 20px 22px;
  background: rgba(18, 41, 74, 0.6);
  border: 1px solid var(--c-gold-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.page-contact .co-hero__vnote {
  position: absolute;
  top: 18px;
  right: 12px;
  writing-mode: vertical-rl;
  font-size: var(--fs-note);
  letter-spacing: 0.34em;
  color: rgba(227, 192, 112, 0.72);
}

.page-contact .co-hero__facts {
  display: grid;
  gap: 18px;
  padding-right: 26px;
}

.page-contact .co-fact {
  display: grid;
  gap: 2px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .co-fact:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-contact .co-fact__num {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--c-gold-a);
}

.page-contact .co-fact__label {
  font-size: 14px;
  color: var(--c-stone);
}

/* ---------- 通用章节头 ---------- */

.page-contact .co-head {
  display: grid;
  gap: 10px;
  max-width: 46rem;
}

.page-contact .co-head .kb-section__num {
  font-family: var(--font-mono);
  font-size: var(--fs-note);
  letter-spacing: 0.26em;
  color: var(--c-gold-a);
}

.page-contact .co-head .kb-section__title {
  margin: 0;
  font-size: clamp(24px, 4.4vw, var(--fs-sec));
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: -0.008em;
  color: var(--c-white);
}

.page-contact .co-head__lead {
  margin: 0;
  max-width: 36em;
  font-size: 16px;
  line-height: 1.9;
  color: rgba(244, 247, 251, 0.72);
}

/* ---------- 合作方向 ---------- */

.page-contact .co-directions {
  padding-top: 44px;
}

.page-contact .co-directions__figure {
  margin: 30px 0 0;
}

.page-contact .co-cards {
  display: grid;
  gap: 16px;
  margin-top: 32px;
}

.page-contact .co-card {
  position: relative;
  padding: 24px 20px 20px;
  background: var(--c-navy-card);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-contact .co-card:hover {
  border-color: var(--c-gold-a);
  transform: translateY(-2px);
}

.page-contact .co-card__index {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--fs-note);
  letter-spacing: 0.2em;
  color: var(--c-clay);
}

.page-contact .co-card__title {
  margin: 10px 0 12px;
  font-size: var(--fs-sub);
  font-weight: 800;
  line-height: 1.34;
  color: var(--c-white);
}

.page-contact .co-card__who,
.page-contact .co-card__how {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.9;
  color: rgba(244, 247, 251, 0.76);
}

.page-contact .co-card__label {
  display: inline-block;
  margin-right: 8px;
  padding: 1px 8px;
  border: 1px solid var(--line-mid);
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-gold-a);
  vertical-align: 2px;
}

.page-contact .co-card__more {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--line-soft);
}

.page-contact .co-card__more p {
  margin: 0;
  font-size: 14px;
  line-height: 1.86;
  color: var(--c-stone);
}

.page-contact .co-link {
  color: var(--c-gold-a);
  text-decoration: none;
  border-bottom: 1px solid var(--c-gold-line);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .co-link:hover,
.page-contact .co-link:focus-visible {
  color: var(--c-white);
  border-bottom-color: var(--c-gold-a);
}

/* ---------- 联系渠道 ---------- */

.page-contact .co-channels {
  background: var(--c-cream);
  color: var(--c-ink);
}

.page-contact .co-channels .co-head .kb-section__num {
  color: var(--c-gold-b);
}

.page-contact .co-channels .co-head .kb-section__title {
  color: var(--c-navy);
}

.page-contact .co-channels .co-head__lead {
  color: rgba(10, 15, 24, 0.72);
}

.page-contact .co-channels__grid {
  display: grid;
  gap: 14px;
  margin-top: 30px;
}

.page-contact .co-channel {
  display: grid;
  gap: 4px;
  padding: 20px 20px 18px;
  background: rgba(11, 27, 51, 0.045);
  border-left: 3px solid var(--c-gold-b);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  transition: background-color var(--dur) var(--ease);
}

.page-contact .co-channel:hover {
  background: rgba(11, 27, 51, 0.075);
}

.page-contact .co-channel__key {
  font-size: var(--fs-note);
  letter-spacing: 0.24em;
  color: var(--c-stone);
}

.page-contact .co-channel__val {
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--c-navy);
  word-break: break-word;
  overflow-wrap: anywhere;
}

.page-contact .co-channel__hint {
  margin-top: 4px;
  font-size: 14px;
  line-height: 1.82;
  color: rgba(10, 15, 24, 0.66);
}

.page-contact .co-channels__note {
  margin: 26px 0 0;
  padding-top: 18px;
  border-top: 1px solid rgba(11, 27, 51, 0.14);
  max-width: 44em;
  font-size: 14px;
  line-height: 1.86;
  color: rgba(10, 15, 24, 0.66);
}

.page-contact .co-channels__note .co-link {
  color: var(--c-gold-b);
  border-bottom-color: rgba(166, 124, 46, 0.45);
}

.page-contact .co-channels__note .co-link:hover,
.page-contact .co-channels__note .co-link:focus-visible {
  color: var(--c-navy);
  border-bottom-color: var(--c-gold-b);
}

/* ---------- 提交准备 ---------- */

.page-contact .co-prep__list {
  display: grid;
  gap: 0;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .co-prep__item {
  position: relative;
  padding: 0 0 26px 34px;
  border-left: 1px solid var(--line-mid);
}

.page-contact .co-prep__item:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-contact .co-prep__num {
  position: absolute;
  left: -11px;
  top: 0;
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--c-navy-deep);
  border: 1px solid var(--c-gold-line);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0;
  color: var(--c-gold-a);
}

.page-contact .co-prep__title {
  margin: 0 0 6px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--c-white);
}

.page-contact .co-prep__text {
  margin: 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.9;
  color: rgba(244, 247, 251, 0.7);
}

/* ---------- 流程 ---------- */

.page-contact .co-flow__figure {
  margin: 30px 0 0;
}

.page-contact .co-flow__steps {
  display: grid;
  gap: 0;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .co-step {
  position: relative;
  padding: 0 0 26px 30px;
  border-left: 1px solid var(--line-mid);
}

.page-contact .co-step:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-contact .co-step__dot {
  position: absolute;
  left: -6px;
  top: 4px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--c-navy-deep);
  border: 2px solid var(--c-amber);
}

.page-contact .co-step:last-child .co-step__dot {
  border-color: var(--c-jade);
}

.page-contact .co-step__num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-note);
  letter-spacing: 0.2em;
  color: var(--c-stone);
}

.page-contact .co-step__title {
  margin: 6px 0 8px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.42;
  color: var(--c-white);
}

.page-contact .co-step__text {
  margin: 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.9;
  color: rgba(244, 247, 251, 0.7);
}

/* ---------- 常见问题 ---------- */

.page-contact .co-faq__list {
  display: grid;
  gap: 0;
  margin-top: 26px;
  border-top: 1px solid var(--line-soft);
}

.page-contact .co-faq__item {
  padding: 22px 0;
  border-bottom: 1px solid var(--line-soft);
  transition: border-color var(--dur) var(--ease);
}

.page-contact .co-faq__item:hover {
  border-bottom-color: var(--c-gold-line);
}

.page-contact .co-faq__q {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--c-white);
}

.page-contact .co-faq__q::before {
  content: "—";
  margin-right: 10px;
  color: var(--c-gold-a);
}

.page-contact .co-faq__a {
  margin: 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.9;
  color: rgba(244, 247, 251, 0.7);
}

/* ---------- 收束 ---------- */

.page-contact .co-closing {
  padding-bottom: 64px;
}

.page-contact .co-closing__inner {
  padding: 32px 22px 30px;
  background: linear-gradient(158deg, rgba(18, 41, 74, 0.95) 0%, rgba(8, 21, 42, 0.95) 100%);
  border: 1px solid var(--c-gold-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-panel);
}

.page-contact .co-closing__eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-note);
  letter-spacing: 0.28em;
  color: var(--c-gold-a);
}

.page-contact .co-closing__title {
  margin: 12px 0 0;
  font-size: clamp(22px, 4vw, 30px);
  font-weight: 800;
  line-height: 1.34;
  color: var(--c-white);
}

.page-contact .co-closing__lead {
  margin: 12px 0 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.9;
  color: rgba(244, 247, 251, 0.72);
}

.page-contact .co-closing__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

/* ---------- 平板 ---------- */

@media (min-width: 720px) {
  .page-contact .co-hero {
    padding: 22px 0 68px;
  }

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

  .page-contact .co-hero__facts {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    padding-right: 30px;
  }

  .page-contact .co-fact {
    padding-bottom: 0;
    border-bottom: 0;
    border-left: 1px solid var(--line-soft);
    padding-left: 16px;
  }

  .page-contact .co-fact:first-child {
    border-left: 0;
    padding-left: 0;
  }

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

  .page-contact .co-cards {
    gap: 18px;
  }

  .page-contact .co-card {
    padding: 28px 26px 24px;
  }

  .page-contact .co-closing__inner {
    padding: 40px 36px 38px;
  }
}

/* ---------- 桌面 ---------- */

@media (min-width: 900px) {
  .page-contact .co-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
    gap: 46px;
  }

  .page-contact .co-hero__facts {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .page-contact .co-fact {
    border-left: 0;
    padding-left: 0;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--line-soft);
  }

  .page-contact .co-fact:last-child {
    padding-bottom: 0;
    border-bottom: 0;
  }

  .page-contact .co-cards {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 18px;
    margin-top: 38px;
  }

  .page-contact .co-card:nth-child(1) {
    grid-column: span 5;
  }

  .page-contact .co-card:nth-child(2) {
    grid-column: span 7;
  }

  .page-contact .co-card:nth-child(3) {
    grid-column: span 6;
  }

  .page-contact .co-card:nth-child(4) {
    grid-column: span 6;
  }

  .page-contact .co-prep__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 40px;
    row-gap: 30px;
  }

  .page-contact .co-prep__item {
    padding-bottom: 0;
    border-left-color: transparent;
  }

  .page-contact .co-flow__steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 24px;
    margin-top: 40px;
  }

  .page-contact .co-step {
    padding: 28px 0 0;
    border-left: 0;
    border-top: 1px solid var(--line-mid);
  }

  .page-contact .co-step:last-child {
    padding-bottom: 0;
    border-top-color: var(--c-jade);
  }

  .page-contact .co-step__dot {
    left: 0;
    top: -6px;
  }

  .page-contact .co-faq__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    border-top: 0;
    column-gap: 44px;
  }

  .page-contact .co-faq__item {
    border-top: 1px solid var(--line-soft);
  }

  .page-contact .co-closing__inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    column-gap: 40px;
    padding: 46px 44px 44px;
  }

  .page-contact .co-closing__eyebrow,
  .page-contact .co-closing__title,
  .page-contact .co-closing__lead {
    grid-column: 1;
  }

  .page-contact .co-closing__actions {
    grid-column: 2;
    grid-row: 1 / span 3;
    align-self: center;
    margin-top: 0;
    flex-direction: column;
    align-items: stretch;
  }
}

/* ---------- 卡片展开：仅在支持悬停的宽屏生效 ---------- */

@media (hover: hover) and (min-width: 900px) {
  .page-contact .co-card__more {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    margin-top: 0;
    padding-top: 0;
    border-top-color: transparent;
    transition: max-height 200ms var(--ease), opacity 200ms var(--ease),
      margin-top 200ms var(--ease), padding-top 200ms var(--ease);
  }

  .page-contact .co-card:hover .co-card__more,
  .page-contact .co-card:focus-within .co-card__more {
    max-height: 220px;
    opacity: 1;
    margin-top: 14px;
    padding-top: 14px;
    border-top-color: var(--line-soft);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .co-card,
  .page-contact .co-channel,
  .page-contact .co-faq__item,
  .page-contact .co-link,
  .page-contact .co-card__more {
    transition: none;
  }

  .page-contact .co-card:hover {
    transform: none;
  }
}
<<<END>>>