/* ===== 商务合作页（page-contact） ===== */
.page-contact {
  --co-cut: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
  --co-cut-sm: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
  --co-hair: rgba(14, 59, 50, .12);
  color: var(--ink-black);
}

.page-contact img {
  max-width: 100%;
  height: auto;
  display: block;
}

.page-contact .co-crumbs-wrap {
  padding-top: 16px;
  padding-bottom: 4px;
}

.page-contact .co-link {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid var(--gold);
  transition: border-color .2s var(--ease);
}

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

/* ---------- 首屏 ---------- */
.page-contact .co-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink-green);
  color: var(--porcelain);
  padding: 40px 0 0;
}

.page-contact .co-hero::after {
  content: "";
  position: absolute;
  right: -140px;
  bottom: -180px;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(201, 162, 74, .30), rgba(201, 162, 74, 0) 68%);
  pointer-events: none;
}

.page-contact .co-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 30px;
}

.page-contact .co-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--gold-soft);
}

.page-contact .co-kicker::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--gold);
}

.page-contact .co-hero h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(28px, 6.4vw, 50px);
  line-height: 1.16;
  letter-spacing: -.02em;
}

.page-contact .co-hero h1 em {
  font-style: normal;
  color: var(--gold);
}

.page-contact .co-lede {
  max-width: 48ch;
  margin: 0 0 26px;
  font-size: 16px;
  line-height: 1.82;
  color: rgba(247, 244, 236, .82);
}

.page-contact .co-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-contact .co-hero-figure {
  margin: 0;
  padding: 0;
  background: var(--felt);
  border: 1px solid rgba(201, 162, 74, .34);
  clip-path: var(--co-cut);
  overflow: hidden;
}

.page-contact .co-hero-figure img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-contact .co-hero-figure .media-caption {
  margin: 0;
  padding: 10px 14px;
  background: var(--ink-deep);
  font-size: 12px;
  line-height: 1.6;
  color: rgba(247, 244, 236, .68);
}

/* 三段错位色块 */
.page-contact .co-slabs {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  margin-top: 40px;
}

.page-contact .co-slab {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 6px;
  padding: 12px 14px;
  background: rgba(247, 244, 236, .07);
  border-top: 3px solid var(--gold);
  min-width: 0;
}

.page-contact .co-slab--1 { width: 58%; min-height: 72px; }
.page-contact .co-slab--2 { width: 78%; min-height: 88px; background: rgba(201, 162, 74, .16); }
.page-contact .co-slab--3 {
  width: 100%;
  min-height: 104px;
  background: var(--gold);
  border-top-color: var(--cinnabar);
  color: var(--ink-deep);
}

.page-contact .co-slab-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--gold-soft);
}

.page-contact .co-slab--3 .co-slab-num {
  color: rgba(8, 32, 25, .72);
}

.page-contact .co-slab-label {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 14px;
  line-height: 1.35;
}

/* ---------- 合作方向 ---------- */
.page-contact .co-routes {
  padding-top: 58px;
  padding-bottom: 58px;
}

.page-contact .co-head .section-note {
  max-width: 58ch;
}

.page-contact .co-seg {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 26px;
  padding: 6px;
  background: var(--mist);
}

.page-contact .co-seg .segment-btn {
  appearance: none;
  -webkit-appearance: none;
  border: 1px solid transparent;
  background: transparent;
  color: var(--ink-black);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  padding: 10px 18px;
  cursor: pointer;
  clip-path: var(--co-cut-sm);
  transition: background-color .22s var(--ease), color .22s var(--ease);
}

.page-contact .co-seg .segment-btn:hover {
  background: rgba(14, 59, 50, .09);
}

.page-contact .co-seg .segment-btn[aria-selected="true"] {
  background: var(--ink-green);
  color: var(--gold-soft);
}

.page-contact .co-seg .segment-btn:focus-visible {
  outline: 2px solid var(--cinnabar);
  outline-offset: 2px;
}

.page-contact .co-panel {
  display: grid;
  gap: 16px;
  margin-top: 22px;
}

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

.page-contact .co-panel-main {
  background: var(--porcelain);
  border: 1px solid var(--co-hair);
  border-top: 4px solid var(--ink-green);
  clip-path: var(--co-cut);
  padding: 26px 20px 28px;
  min-width: 0;
}

.page-contact .co-panel-side {
  background: var(--ink-green);
  color: var(--porcelain);
  clip-path: var(--co-cut);
  padding: 26px 20px 24px;
  min-width: 0;
}

.page-contact .co-panel-tag {
  display: inline-block;
  margin: 0 0 14px;
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--cinnabar);
  border: 1px solid rgba(178, 55, 44, .45);
}

.page-contact .co-panel-tag--dark {
  color: var(--gold-soft);
  border-color: rgba(201, 162, 74, .5);
}

.page-contact .co-panel-title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(19px, 3.4vw, 25px);
  line-height: 1.4;
}

.page-contact .co-panel-text {
  margin: 0 0 20px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--gray);
}

.page-contact .co-panel-side .co-panel-text {
  color: rgba(247, 244, 236, .78);
}

.page-contact .co-panel-subhead {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 15px;
  letter-spacing: .02em;
  color: var(--ink-green);
}

.page-contact .co-panel-side .co-panel-subhead {
  color: var(--gold-soft);
}

.page-contact .co-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 11px;
}

.page-contact .co-list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--ink-black);
}

.page-contact .co-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 8px;
  height: 8px;
  background: var(--gold);
  clip-path: polygon(0 0, 100% 0, 100% 68%, 68% 100%, 0 100%);
}

.page-contact .co-list--side li {
  color: rgba(247, 244, 236, .88);
}

.page-contact .co-list--side li::before {
  background: var(--gold-soft);
}

.page-contact .co-panel-foot {
  margin: 20px 0 0;
  padding-top: 14px;
  border-top: 1px solid rgba(201, 162, 74, .3);
  font-size: 14px;
  line-height: 1.7;
  color: rgba(247, 244, 236, .74);
}

/* ---------- 四步流程 ---------- */
.page-contact .co-flow {
  padding-top: 58px;
  padding-bottom: 58px;
}

.page-contact .co-flow-figure {
  margin: 28px 0 0;
  padding: 0;
  background: var(--porcelain);
  border: 1px solid var(--co-hair);
  clip-path: var(--co-cut);
  overflow: hidden;
}

.page-contact .co-flow-figure img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-contact .co-flow-figure .media-caption {
  margin: 0;
  padding: 10px 14px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--gray);
}

.page-contact .co-steps {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .co-step {
  position: relative;
  background: var(--porcelain);
  border-left: 3px solid var(--gold);
  padding: 20px 18px 22px;
  box-shadow: var(--shadow);
  min-width: 0;
}

.page-contact .co-step-num {
  display: inline-block;
  margin-bottom: 12px;
  padding: 3px 8px;
  background: var(--gold-soft);
  color: var(--ink-deep);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
}

.page-contact .co-step-title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  line-height: 1.4;
}

.page-contact .co-step-text {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--gray);
}

.page-contact .co-step-mat {
  margin: 0;
  padding-top: 11px;
  border-top: 1px dashed rgba(107, 103, 92, .42);
  font-size: 13px;
  line-height: 1.66;
  color: var(--ink-black);
}

.page-contact .co-step-mat span {
  margin-right: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--cinnabar);
}

/* ---------- 联系渠道 ---------- */
.page-contact .co-channels {
  padding-top: 58px;
  padding-bottom: 58px;
}

.page-contact .co-channels .section-title {
  color: var(--porcelain);
}

.page-contact .co-channels .section-kicker {
  color: var(--gold-soft);
}

.page-contact .co-channels .section-note {
  color: rgba(247, 244, 236, .72);
  max-width: 58ch;
}

.page-contact .co-channel-grid {
  display: grid;
  gap: 14px;
  margin-top: 32px;
}

.page-contact .co-channel {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px 20px 26px;
  background: rgba(247, 244, 236, .05);
  border: 1px solid rgba(201, 162, 74, .3);
  clip-path: var(--co-cut);
  min-width: 0;
}

.page-contact .co-channel-key {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--gold-soft);
}

.page-contact .co-channel-val {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--porcelain);
  word-break: break-word;
  overflow-wrap: anywhere;
}

.page-contact .co-channel-for {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: rgba(247, 244, 236, .74);
}

/* ---------- 回复时段 ---------- */
.page-contact .co-hours {
  padding-top: 56px;
  padding-bottom: 56px;
}

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

.page-contact .co-hours-title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(21px, 3.8vw, 30px);
  line-height: 1.35;
}

.page-contact .co-hours-lede p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.86;
  color: var(--gray);
  max-width: 52ch;
}

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

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

.page-contact .co-hours-list li {
  padding: 14px 16px;
  background: var(--porcelain);
  border-left: 3px solid var(--gold);
  font-size: 15px;
  line-height: 1.74;
  color: var(--gray);
}

.page-contact .co-hours-list strong {
  color: var(--ink-black);
}

/* ---------- 备案信息带 ---------- */
.page-contact .co-meta-band {
  background: var(--ink-deep);
  color: rgba(247, 244, 236, .72);
  padding: 16px 0;
}

.page-contact .co-meta-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 22px;
  font-size: 13px;
  line-height: 1.6;
}

.page-contact .co-meta-icp {
  color: var(--gold-soft);
  letter-spacing: .06em;
}

.page-contact .co-meta-link {
  color: var(--gold-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(201, 162, 74, .5);
  transition: border-color .2s var(--ease);
}

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

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

  .page-contact .co-crumbs-wrap {
    padding-top: 22px;
  }
}

@media (min-width: 900px) {
  .page-contact .co-hero {
    padding-top: 56px;
  }

  .page-contact .co-hero-inner {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    gap: 52px;
    align-items: center;
  }

  .page-contact .co-slabs {
    flex-direction: row;
    align-items: flex-end;
    gap: 14px;
    margin-top: 48px;
  }

  .page-contact .co-slab {
    width: auto;
    padding: 14px 18px;
  }

  .page-contact .co-slab--1 { flex: 1.1 1 0; min-height: 84px; }
  .page-contact .co-slab--2 { flex: 1.5 1 0; min-height: 106px; }
  .page-contact .co-slab--3 { flex: 2 1 0; min-height: 130px; }

  .page-contact .co-slab-label {
    font-size: 16px;
  }

  .page-contact .co-panel {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 20px;
    align-items: start;
  }

  .page-contact .co-panel-main,
  .page-contact .co-panel-side {
    padding: 30px 28px 32px;
  }

  .page-contact .co-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
  }

  .page-contact .co-step {
    margin-right: 18px;
  }

  .page-contact .co-step:last-child {
    margin-right: 0;
  }

  .page-contact .co-step:not(:last-child)::after {
    content: "";
    position: absolute;
    right: -18px;
    top: 44px;
    width: 18px;
    height: 2px;
    background: var(--gold);
  }

  .page-contact .co-hours-inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .co-seg .segment-btn,
  .page-contact .co-link,
  .page-contact .co-meta-link {
    transition: none;
  }
}