.page-contact {
  background: var(--c-pitch);
  color: var(--c-white);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-contact .coop-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(36px, 4.5vw, 68px) 0 clamp(36px, 4.5vw, 64px);
  border-bottom: 2px solid var(--c-steel);
  background:
    radial-gradient(880px 420px at 90% -12%, rgba(198, 255, 61, 0.13), transparent 68%),
    radial-gradient(680px 380px at 2% 112%, rgba(255, 106, 31, 0.11), transparent 70%),
    var(--c-pitch);
}

.page-contact .coop-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.45;
  background-image: linear-gradient(to right, rgba(36, 52, 65, 0.6) 1px, transparent 1px);
  background-size: 96px 100%;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, transparent 92%);
  mask-image: linear-gradient(to bottom, #000 0%, transparent 92%);
}

.page-contact .coop-hero .shell {
  position: relative;
  z-index: 1;
}

.page-contact .coop-hero__inner {
  margin-top: clamp(26px, 3.6vw, 48px);
  max-width: 900px;
}

.page-contact .coop-hero__title {
  margin: 16px 0 0;
  font-size: clamp(34px, 5.2vw, 76px);
  font-weight: 300;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--c-white);
}

.page-contact .text-lime {
  color: var(--c-lime);
}

.page-contact .coop-hero__lead {
  margin: 22px 0 0;
  font-size: 17px;
  color: var(--c-dim);
}

.page-contact .coop-hero__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(148px, 1fr));
  gap: 18px 24px;
  margin-top: clamp(30px, 4vw, 48px);
  padding-top: 24px;
  border-top: 2px solid var(--c-steel);
}

.page-contact .hero-stat {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-contact .hero-stat__num {
  font-family: var(--font-mono);
  font-size: clamp(28px, 3.2vw, 44px);
  font-weight: 700;
  line-height: 1;
  color: var(--c-lime);
  letter-spacing: -0.02em;
}

.page-contact .hero-stat__label {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--c-muted);
}

/* ---------- 双栏骨架 ---------- */
.page-contact .coop-layout {
  display: grid;
  gap: clamp(36px, 5vw, 64px);
  padding-top: clamp(40px, 5vw, 76px);
  padding-bottom: clamp(56px, 7vw, 104px);
}

.page-contact .coop-main {
  min-width: 0;
}

.page-contact .coop-section {
  margin-bottom: clamp(56px, 7vw, 96px);
}

.page-contact .coop-section:last-child {
  margin-bottom: 0;
}

@media (min-width: 1000px) {
  .page-contact .coop-layout {
    grid-template-columns: minmax(0, 1fr) 348px;
    align-items: start;
  }

  .page-contact .coop-main {
    grid-column: 1;
    grid-row: 1;
  }

  .page-contact .coop-aside {
    grid-column: 2;
    grid-row: 1;
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }
}

/* ---------- 章节标题 ---------- */
.page-contact .coop-head {
  margin: 20px 0 28px;
}

.page-contact .coop-head__title {
  margin: 0;
  padding-left: 14px;
  border-left: 5px solid var(--c-lime);
  font-size: clamp(23px, 2.7vw, 34px);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -0.01em;
}

.page-contact .coop-head__desc {
  margin: 14px 0 0;
  color: var(--c-dim);
}

/* ---------- 合作方向卡片 ---------- */
.page-contact .dir-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 640px) {
  .page-contact .dir-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-contact .dir-card {
  position: relative;
  overflow: hidden;
  padding: 26px 22px 24px;
  background: var(--c-panel);
  border: 2px solid var(--c-steel);
  box-shadow: var(--hard-shadow-sm);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.page-contact .dir-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--accent, var(--c-lime));
}

.page-contact .dir-card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 28px;
  height: 28px;
  opacity: 0.24;
  background: var(--accent, var(--c-lime));
  clip-path: polygon(100% 0, 0 0, 100% 100%);
}

.page-contact .dir-card--lime { --accent: var(--c-lime); }
.page-contact .dir-card--orange { --accent: var(--c-orange); }
.page-contact .dir-card--cyan { --accent: var(--c-cyan); }
.page-contact .dir-card--amber { --accent: var(--c-amber); }

.page-contact .dir-card:hover,
.page-contact .dir-card:focus-within {
  transform: translateY(-4px);
  border-color: var(--accent, var(--c-lime));
}

.page-contact .dir-card__num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--accent, var(--c-lime));
}

.page-contact .dir-card__title {
  margin: 14px 0 10px;
  font-size: 20px;
  font-weight: 800;
  line-height: 1.3;
}

.page-contact .dir-card__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--c-dim);
}

.page-contact .dir-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px dashed var(--c-steel);
}

.page-contact .dir-card__tag {
  padding: 4px 10px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-muted);
  border: 1px solid var(--c-steel);
}

/* ---------- 图片 ---------- */
.page-contact .coop-figure {
  margin: clamp(28px, 4vw, 46px) 0 0;
}

.page-contact .coop-figure .media-frame {
  display: block;
  border: 2px solid var(--c-steel);
  box-shadow: var(--hard-shadow);
  background: var(--c-panel-2);
  overflow: hidden;
}

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

.page-contact .coop-figure__cap {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-muted);
}

.page-contact .coop-figure--flow {
  margin-top: 0;
}

/* ---------- 流程时间轴 ---------- */
.page-contact .flow-list {
  list-style: none;
  margin: clamp(30px, 4vw, 44px) 0 0;
  padding: 0;
}

.page-contact .flow-step {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 16px;
  padding: 22px 12px 22px 0;
  border-top: 2px solid var(--c-steel);
  transition: background-color 0.2s ease;
}

.page-contact .flow-step:last-child {
  border-bottom: 2px solid var(--c-steel);
}

.page-contact .flow-step:hover {
  background: rgba(198, 255, 61, 0.045);
}

.page-contact .flow-step__num {
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--c-orange);
}

.page-contact .flow-step__body {
  min-width: 0;
}

.page-contact .flow-step__title {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 800;
  line-height: 1.35;
}

.page-contact .flow-step__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-dim);
}

.page-contact .flow-step__need {
  margin: 12px 0 0;
  padding-left: 12px;
  border-left: 3px solid var(--c-cyan);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--c-cyan);
}

/* ---------- 能力数字 ---------- */
.page-contact .cap-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 14px;
  margin-bottom: clamp(26px, 3.4vw, 40px);
}

.page-contact .cap-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 18px;
  background: var(--c-panel-2);
  border: 2px solid var(--c-steel);
}

.page-contact .cap-card__num {
  font-family: var(--font-mono);
  font-size: clamp(30px, 3.6vw, 46px);
  font-weight: 700;
  line-height: 1;
  color: var(--c-lime);
  letter-spacing: -0.02em;
}

.page-contact .cap-card__label {
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--c-muted);
}

/* ---------- 标签页 ---------- */
.page-contact .tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

.page-contact .tabs__tab {
  padding: 10px 18px;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 700;
  color: var(--c-dim);
  background: var(--c-panel);
  border: 2px solid var(--c-steel);
  cursor: pointer;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.page-contact .tabs__tab:hover {
  border-color: var(--c-lime);
  color: var(--c-white);
}

.page-contact .tabs__tab[aria-selected="true"] {
  color: var(--c-pitch);
  background: var(--c-lime);
  border-color: var(--c-lime);
}

.page-contact .tabs__panel {
  padding: 22px 20px;
  background: var(--c-panel);
  border: 2px solid var(--c-steel);
  border-left: 5px solid var(--c-lime);
  box-shadow: var(--hard-shadow-sm);
}

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

.page-contact .relay-list {
  margin: 0;
}

.page-contact .relay-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 12px 0;
  border-bottom: 1px solid var(--c-steel);
}

.page-contact .relay-item:first-child {
  padding-top: 0;
}

.page-contact .relay-item:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-contact .relay-item dt {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--c-muted);
}

.page-contact .relay-item dd {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--c-white);
}

@media (min-width: 720px) {
  .page-contact .relay-item {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 18px;
    align-items: baseline;
  }
}

.page-contact .coop-note {
  margin: 22px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--c-muted);
}

.page-contact .coop-note a {
  color: var(--c-lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(198, 255, 61, 0.45);
}

.page-contact .coop-note a:hover {
  border-bottom-color: var(--c-lime);
}

/* ---------- 联系渠道 ---------- */
.page-contact .channel-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

@media (min-width: 760px) {
  .page-contact .channel-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-contact .channel-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 26px 22px 24px;
  background: var(--c-panel);
  border: 2px solid var(--c-steel);
  box-shadow: var(--hard-shadow-sm);
}

.page-contact .channel-card--lime { border-top: 5px solid var(--c-lime); }
.page-contact .channel-card--orange { border-top: 5px solid var(--c-orange); }
.page-contact .channel-card--cyan { border-top: 5px solid var(--c-cyan); }

.page-contact .channel-card__flag {
  align-self: flex-start;
  margin-bottom: 14px;
  padding: 3px 10px;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--c-pitch);
  background: var(--c-lime);
}

.page-contact .channel-card--orange .channel-card__flag {
  background: var(--c-orange);
}

.page-contact .channel-card--cyan .channel-card__flag {
  background: var(--c-cyan);
}

.page-contact .channel-card__title {
  margin: 0 0 12px;
  font-size: 18px;
  font-weight: 800;
}

.page-contact .channel-card__value {
  margin: 0 0 14px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--c-white);
  word-break: break-word;
}

.page-contact .channel-card__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--c-dim);
}

/* ---------- 准备清单 ---------- */
.page-contact .prep-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-contact .prep-item {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 16px 18px;
  background: var(--c-panel-2);
  border-left: 3px solid var(--c-steel);
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.page-contact .prep-item:hover {
  border-left-color: var(--c-lime);
  background: var(--c-panel);
}

.page-contact .prep-item__box {
  display: block;
  width: 18px;
  height: 18px;
  margin-top: 2px;
  border: 2px solid var(--c-lime);
  background: transparent;
}

.page-contact .prep-item__text {
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-dim);
}

.page-contact .prep-item__text strong {
  color: var(--c-white);
  font-weight: 700;
}

/* ---------- 常见问题 ---------- */
.page-contact .qa-list {
  display: grid;
  gap: 12px;
}

.page-contact .qa-item {
  background: var(--c-panel);
  border: 2px solid var(--c-steel);
  box-shadow: var(--hard-shadow-sm);
}

.page-contact .qa-item[open] {
  border-color: var(--c-lime);
}

.page-contact .qa-item__q {
  padding: 18px 20px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--c-white);
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 52px;
}

.page-contact .qa-item__q::-webkit-details-marker {
  display: none;
}

.page-contact .qa-item__q::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  color: var(--c-lime);
  line-height: 1;
}

.page-contact .qa-item[open] .qa-item__q::after {
  content: "−";
}

.page-contact .qa-item__q:hover {
  color: var(--c-lime);
}

.page-contact .qa-item__a {
  padding: 0 20px 20px;
  border-top: 1px solid var(--c-steel);
  padding-top: 16px;
}

.page-contact .qa-item__a p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-dim);
}

.page-contact .qa-item__a a {
  color: var(--c-lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(198, 255, 61, 0.45);
}

.page-contact .qa-item__a a:hover {
  border-bottom-color: var(--c-lime);
}

/* ---------- 侧栏联系卡 ---------- */
.page-contact .coop-aside {
  min-width: 0;
}

.page-contact .reach-card {
  padding: 26px 22px 24px;
  background: var(--c-lime);
  color: var(--c-pitch);
  border: 2px solid var(--c-pitch);
  box-shadow: var(--hard-shadow);
}

.page-contact .reach-card .idx-label {
  color: var(--c-pitch);
}

.page-contact .reach-card__title {
  margin: 14px 0 20px;
  font-size: 22px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--c-pitch);
}

.page-contact .reach-list {
  margin: 0;
  display: grid;
  gap: 16px;
}

.page-contact .reach-item {
  padding-bottom: 14px;
  border-bottom: 2px solid rgba(11, 15, 20, 0.18);
}

.page-contact .reach-item:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-contact .reach-item__k {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: rgba(11, 15, 20, 0.72);
}

.page-contact .reach-item__v {
  margin: 8px 0 0;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--c-pitch);
  word-break: break-word;
}

.page-contact .reach-item__v.mono {
  font-family: var(--font-mono);
  font-size: 14px;
}

.page-contact .reach-card__note {
  margin: 20px 0 18px;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(11, 15, 20, 0.78);
}

.page-contact .reach-card .btn--lime {
  background: var(--c-pitch);
  color: var(--c-lime);
  border-color: var(--c-pitch);
}

.page-contact .reach-card .btn--lime:hover {
  background: var(--c-panel);
  border-color: var(--c-panel);
  color: var(--c-lime);
}

@media (max-width: 999px) {
  .page-contact .coop-aside {
    margin-top: 4px;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-contact .dir-card,
  .page-contact .flow-step,
  .page-contact .prep-item,
  .page-contact .tabs__tab {
    transition: none;
  }
}
</final>