/* ============ 商务合作页 · page-contact ============ */
.page-contact {
  background: var(--night);
  color: var(--ink);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-contact .co-hero {
  position: relative;
  padding-top: calc(var(--header-h) + clamp(18px, 4vw, 46px));
  padding-bottom: clamp(30px, 5vw, 64px);
}

.page-contact .co-hero__inner {
  display: grid;
  gap: clamp(14px, 2vw, 24px);
  max-width: 980px;
}

.page-contact .co-hero__inner .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .05em;
  color: var(--ash);
}

.page-contact .co-hero__inner .crumbs a {
  color: var(--ash);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .25s var(--ease), border-color .25s var(--ease);
}

.page-contact .co-hero__inner .crumbs a:hover {
  color: var(--pulse);
  border-bottom-color: var(--pulse);
}

.page-contact .co-hero__inner .crumbs [aria-current="page"] {
  color: var(--ink);
}

.page-contact .co-hero .eyebrow {
  color: var(--pulse);
  letter-spacing: .16em;
}

.page-contact .co-hero h1 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(40px, 6.6vw, 84px);
  line-height: 1.02;
  letter-spacing: -0.012em;
  color: var(--headline);
}

.page-contact .co-hero h1 em {
  font-style: normal;
  color: var(--pulse);
  box-shadow: inset 0 -0.16em 0 rgba(61, 240, 138, .18);
}

.page-contact .co-hero__lead {
  margin: 0;
  max-width: 64ch;
  font-size: clamp(15.5px, 1.5vw, 17.5px);
  line-height: 1.8;
  color: var(--ink);
}

.page-contact .co-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 24px;
  margin: 2px 0 0;
  padding-top: 10px;
  border-top: 1px solid var(--edge-soft);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--ash);
}

.page-contact .co-hero__media {
  margin: clamp(26px, 4vw, 48px) var(--gutter) 0;
  aspect-ratio: 7 / 4;
  border: 1px solid var(--edge);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background:
    linear-gradient(158deg, rgba(43, 168, 196, .22), rgba(10, 14, 42, .94) 62%),
    repeating-linear-gradient(90deg, rgba(44, 51, 88, .35) 0 1px, transparent 1px 36px);
}

.page-contact .co-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 主体上下分栏 ---------- */
.page-contact .co-main {
  padding-top: clamp(36px, 6vw, 78px);
}

.page-contact .co-main__grid {
  display: grid;
  gap: clamp(30px, 4vw, 54px);
}

/* 筛选按钮 */
.page-contact .co-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: clamp(18px, 2.4vw, 26px) 0 clamp(18px, 2.4vw, 24px);
}

.page-contact .co-filter .filter-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 14px;
  border: 1px solid var(--edge);
  border-radius: 999px;
  background: transparent;
  color: var(--ash);
  font-family: var(--font-body);
  font-size: 13.5px;
  line-height: 1.4;
  cursor: pointer;
  transition: color .25s var(--ease), border-color .25s var(--ease), background .25s var(--ease);
}

.page-contact .co-filter .filter-btn:hover {
  color: var(--headline);
  border-color: rgba(61, 240, 138, .45);
}

.page-contact .co-filter .filter-btn.is-active,
.page-contact .co-filter .filter-btn[aria-pressed="true"] {
  color: var(--night);
  background: var(--pulse);
  border-color: var(--pulse);
  font-weight: 600;
}

.page-contact .co-filter .filter-count {
  font-family: var(--font-mono);
  font-size: 11.5px;
  opacity: .72;
}

/* 合作方向卡片 */
.page-contact .co-dirs {
  display: grid;
  gap: 16px;
}

.page-contact [data-filter-item][hidden] {
  display: none !important;
}

.page-contact .co-dir {
  position: relative;
  display: grid;
  gap: 11px;
  align-content: start;
  padding: clamp(20px, 2.6vw, 30px);
  padding-left: clamp(24px, 3vw, 34px);
  background: var(--panel);
  border: 1px solid var(--edge);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  transition: border-color .3s var(--ease), background .3s var(--ease);
}

.page-contact .co-dir::before {
  content: "";
  position: absolute;
  left: 0;
  top: clamp(20px, 2.6vw, 30px);
  bottom: clamp(20px, 2.6vw, 30px);
  width: 2px;
  border-radius: 2px;
  background: var(--pulse);
}

.page-contact .co-dir--b::before { background: var(--lake); }
.page-contact .co-dir--c::before { background: var(--flag); }

.page-contact .co-dir:hover {
  border-color: rgba(61, 240, 138, .35);
  background: var(--panel-strong);
}

.page-contact .co-dir__top {
  display: flex;
  align-items: center;
  gap: 12px;
}

.page-contact .co-dir__index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--ash);
  opacity: .72;
}

.page-contact .co-dir__tag {
  padding: 3px 10px;
  border: 1px solid currentColor;
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
}

.page-contact .co-dir--a .co-dir__tag { color: var(--pulse); }
.page-contact .co-dir--b .co-dir__tag { color: var(--lake); }
.page-contact .co-dir--c .co-dir__tag { color: var(--flag); }

.page-contact .co-dir__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(20px, 2.2vw, 27px);
  line-height: 1.2;
  letter-spacing: -0.005em;
  color: var(--headline);
}

.page-contact .co-dir__lead {
  margin: 0;
  max-width: 60ch;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--ash);
}

.page-contact .co-dir__meta {
  display: grid;
  gap: 10px;
  margin: 4px 0 0;
}

.page-contact .co-dir__meta > div {
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  padding-top: 10px;
  border-top: 1px solid var(--edge-soft);
}

.page-contact .co-dir__meta dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--ash);
}

.page-contact .co-dir__meta dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
}

.page-contact .filter-empty {
  margin: 18px 0 0;
  padding: 14px 16px;
  border: 1px dashed var(--edge);
  border-radius: var(--radius);
  font-size: 14px;
  color: var(--ash);
}

/* 联系卡 */
.page-contact .co-contact-card {
  display: grid;
  gap: 12px;
  padding: clamp(20px, 2.6vw, 26px);
  background: linear-gradient(168deg, rgba(20, 26, 60, .92), rgba(10, 14, 42, .82));
  border: 1px solid var(--edge);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
}

.page-contact .co-contact-card__eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--score);
}

.page-contact .co-contact-card__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(22px, 2.4vw, 28px);
  line-height: 1.18;
  color: var(--headline);
}

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

.page-contact .co-contact-card__list {
  display: grid;
  gap: 12px;
  margin: 4px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--edge-soft);
}

.page-contact .co-contact-card__row {
  display: grid;
  gap: 4px;
}

.page-contact .co-contact-card__row dt {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--ash);
}

.page-contact .co-contact-card__row dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--headline);
  overflow-wrap: anywhere;
}

.page-contact .co-contact-card__row dd .mono {
  font-size: 13.5px;
  letter-spacing: .02em;
}

.page-contact .co-contact-card__foot {
  margin: 4px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--edge-soft);
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--ash);
}

/* ---------- 流程 ---------- */
.page-contact .co-flow {
  padding-top: clamp(44px, 7vw, 92px);
}

.page-contact .co-flow__head {
  margin-bottom: clamp(22px, 3vw, 34px);
}

.page-contact .co-steps {
  list-style: none;
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
}

.page-contact .co-step {
  position: relative;
  display: grid;
  gap: 8px;
  align-content: start;
  padding: 18px 16px;
  background: var(--stand);
  border: 1px solid var(--edge);
  border-radius: var(--radius);
  transition: border-color .3s var(--ease), background .3s var(--ease);
}

.page-contact .co-step::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--edge);
  transition: background .3s var(--ease);
}

.page-contact .co-step:hover,
.page-contact .co-step:focus-within {
  border-color: rgba(61, 240, 138, .34);
  background: rgba(20, 26, 60, .92);
}

.page-contact .co-step:hover::after,
.page-contact .co-step:focus-within::after {
  background: var(--pulse);
}

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

.page-contact .co-step__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.page-contact .co-step__no {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .16em;
  color: var(--lake);
}

.page-contact .co-step__mark {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
}

.page-contact .co-step__mark::before,
.page-contact .co-step__mark::after {
  content: "";
  position: absolute;
  background: var(--ash);
  transition: transform .3s var(--ease), background .3s var(--ease);
}

.page-contact .co-step__mark::before {
  left: 0;
  right: 0;
  top: 6px;
  height: 1.5px;
}

.page-contact .co-step__mark::after {
  top: 0;
  bottom: 0;
  left: 6px;
  width: 1.5px;
}

.page-contact .co-step:hover .co-step__mark::before,
.page-contact .co-step:focus-within .co-step__mark::before {
  background: var(--pulse);
}

.page-contact .co-step:hover .co-step__mark::after,
.page-contact .co-step:focus-within .co-step__mark::after {
  transform: scaleY(0);
}

.page-contact .co-step__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.25;
  letter-spacing: -0.004em;
  color: var(--headline);
}

.page-contact .co-step__meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--score);
}

.page-contact .co-step__detail {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height .4s var(--ease), opacity .3s var(--ease);
}

.page-contact .co-step:hover .co-step__detail,
.page-contact .co-step:focus-within .co-step__detail {
  max-height: 280px;
  opacity: 1;
}

.page-contact .co-step__detail ul {
  list-style: none;
  display: grid;
  gap: 6px;
  margin: 10px 0 2px;
  padding: 10px 0 0;
  border-top: 1px solid var(--edge-soft);
}

.page-contact .co-step__detail li {
  position: relative;
  padding-left: 15px;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--ash);
}

.page-contact .co-step__detail li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 6px;
  height: 1px;
  background: var(--lake);
}

.page-contact .co-flow__figure {
  margin: clamp(24px, 3.4vw, 40px) 0 0;
  aspect-ratio: 2 / 1;
  border: 1px solid var(--edge);
  border-radius: var(--radius);
  overflow: hidden;
  background: linear-gradient(150deg, rgba(43, 168, 196, .16), rgba(10, 14, 42, .94) 64%);
}

.page-contact .co-flow__figure img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 服务范围 ---------- */
.page-contact .co-region {
  padding-top: clamp(44px, 7vw, 92px);
}

.page-contact .co-region__grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}

.page-contact .co-region__title {
  margin: 8px 0 16px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(26px, 3.4vw, 40px);
  line-height: 1.14;
  letter-spacing: -0.008em;
  color: var(--headline);
}

.page-contact .co-region__prose {
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ink);
}

.page-contact .co-region__prose p {
  margin: 0 0 14px;
}

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

.page-contact .co-region .info-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(146px, 1fr));
  gap: 1px;
  background: var(--edge);
  border: 1px solid var(--edge);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-contact .co-region .info-bar__cell {
  display: grid;
  gap: 6px;
  padding: 16px 16px 18px;
  background: var(--night);
}

.page-contact .co-region .info-bar__key {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--ash);
}

.page-contact .co-region .info-bar__val {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 24px;
  line-height: 1.1;
  color: var(--headline);
}

.page-contact .co-region__foot {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.7;
}

/* ---------- 提交清单 ---------- */
.page-contact .co-prep {
  padding-top: clamp(44px, 7vw, 92px);
  padding-bottom: clamp(40px, 6vw, 80px);
}

.page-contact .co-prep__head {
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-contact .co-checks {
  list-style: none;
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
}

.page-contact .co-check {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 13px;
  align-items: start;
  padding: 15px 16px;
  background: var(--panel);
  border: 1px solid var(--edge);
  border-radius: var(--radius);
  transition: border-color .3s var(--ease), background .3s var(--ease);
}

.page-contact .co-check:has(.co-check__input:checked) {
  border-color: rgba(61, 240, 138, .5);
  background: rgba(20, 26, 60, .9);
}

.page-contact .co-check__input {
  appearance: none;
  -webkit-appearance: none;
  display: grid;
  place-content: center;
  flex: none;
  width: 20px;
  height: 20px;
  margin: 2px 0 0;
  border: 1px solid var(--edge);
  border-radius: 3px;
  background: rgba(10, 14, 42, .6);
  cursor: pointer;
  transition: border-color .25s var(--ease), background .25s var(--ease);
}

.page-contact .co-check__input::after {
  content: "";
  width: 9px;
  height: 9px;
  border-radius: 2px;
  background: var(--pulse);
  transform: scale(0);
  transition: transform .2s var(--ease);
}

.page-contact .co-check__input:checked {
  border-color: var(--pulse);
  background: rgba(61, 240, 138, .12);
}

.page-contact .co-check__input:checked::after {
  transform: scale(1);
}

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

.page-contact .co-check__label {
  display: grid;
  gap: 4px;
  cursor: pointer;
}

.page-contact .co-check__title {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--headline);
}

.page-contact .co-check__desc {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ash);
}

.page-contact .co-prep__scope {
  margin-top: clamp(20px, 3vw, 28px);
  padding: 18px 20px;
  border: 1px solid var(--edge);
  border-left: 2px solid var(--flag);
  border-radius: var(--radius);
  background: rgba(20, 26, 60, .5);
}

.page-contact .co-prep__scope p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--ink);
}

.page-contact .co-prep__scope p + p {
  margin-top: 8px;
}

/* ---------- 收尾条 ---------- */
.page-contact .co-signoff {
  border-top: 1px solid var(--edge);
  background: linear-gradient(120deg, rgba(61, 240, 138, .08), rgba(10, 14, 42, .9) 58%);
}

.page-contact .co-signoff__inner {
  display: grid;
  gap: 10px;
  padding-top: clamp(24px, 4vw, 42px);
  padding-bottom: clamp(24px, 4vw, 42px);
}

.page-contact .co-signoff__text {
  margin: 0;
  max-width: 70ch;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(18px, 2.2vw, 24px);
  line-height: 1.35;
  color: var(--headline);
}

.page-contact .co-signoff__mail {
  margin: 0;
  font-size: 13.5px;
  letter-spacing: .04em;
  color: var(--pulse);
  overflow-wrap: anywhere;
}

/* ---------- 响应式 ---------- */
@media (max-width: 640px) {
  .page-contact .co-hero__media {
    aspect-ratio: 4 / 3;
  }

  .page-contact .co-dir__meta > div {
    grid-template-columns: 72px minmax(0, 1fr);
  }

  .page-contact .co-flow__figure {
    aspect-ratio: 4 / 3;
  }
}

@media (min-width: 720px) {
  .page-contact .co-dirs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .co-dir--a {
    grid-column: 1 / -1;
  }

  .page-contact .co-dir--a .co-dir__meta {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-contact .co-dir--a .co-dir__meta > div {
    grid-template-columns: minmax(0, 1fr);
    gap: 5px;
    padding-top: 12px;
    border-top: 1px solid var(--edge-soft);
  }

  .page-contact .co-checks {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .co-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .co-region__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .page-contact .co-main__grid {
    grid-template-columns: minmax(0, 1fr) 336px;
    gap: clamp(36px, 4vw, 62px);
    align-items: start;
  }

  .page-contact .co-main__aside {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }
}

@media (min-width: 1120px) {
  .page-contact .co-steps {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 0;
  }

  .page-contact .co-step {
    border-radius: 0;
    min-height: 214px;
  }

  .page-contact .co-step + .co-step {
    border-left: 0;
  }

  .page-contact .co-step:first-child {
    border-radius: var(--radius) 0 0 var(--radius);
  }

  .page-contact .co-step:last-child {
    border-radius: 0 var(--radius) var(--radius) 0;
  }
}
<<<END>>>