.page-contact {
  --co-pad: clamp(56px, 8vw, 112px);
  --co-card-bg: linear-gradient(150deg, rgba(42, 44, 51, 0.9), rgba(20, 21, 26, 0.95));
  background: var(--ink);
  color: var(--ivory);
}

.page-contact .co-crumb {
  padding-top: 20px;
}

.page-contact .co-crumb .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--celadon);
}

.page-contact .co-crumb .breadcrumbs a {
  color: var(--celadon);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.page-contact .co-crumb .breadcrumbs a:hover,
.page-contact .co-crumb .breadcrumbs a:focus-visible {
  color: var(--gold-hi);
}

.page-contact .co-crumb .breadcrumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--gold-deep);
}

.page-contact .co-crumb .breadcrumbs [aria-current="page"] {
  color: var(--ivory);
}

/* ---------- 首屏分屏 ---------- */
.page-contact .co-hero {
  padding: 26px 0 var(--co-pad);
}

.page-contact .co-hero-grid {
  display: grid;
  gap: 40px;
}

.page-contact .co-hero-text .eyebrow {
  margin: 0 0 18px;
}

.page-contact .co-hero-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 6vw, 3.5rem);
  line-height: 1.16;
  letter-spacing: 0.02em;
  margin: 0;
}

.page-contact .co-hero-lead {
  margin: 22px 0 0;
  color: var(--ivory);
  opacity: 0.84;
}

.page-contact .co-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.page-contact .co-facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 18px;
  margin: 38px 0 0;
  padding: 22px 0 0;
  border-top: 1px solid var(--line-soft);
}

.page-contact .co-fact dt {
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  color: var(--celadon);
}

.page-contact .co-fact dd {
  margin: 8px 0 0;
  font-family: var(--font-narrow);
  font-variant-numeric: tabular-nums;
  font-size: 1.25rem;
  color: var(--gold-hi);
}

.page-contact .co-hero-media {
  margin: 0;
}

.page-contact .co-hero-frame {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 96px 96px var(--radius-lg) var(--radius-lg);
  background:
    radial-gradient(circle at 50% 12%, rgba(201, 162, 39, 0.18), transparent 58%),
    linear-gradient(160deg, var(--ink-2), var(--graphite));
}

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

.page-contact .co-hero-cap {
  display: block;
  margin-top: 12px;
  color: var(--celadon);
  text-align: right;
}

/* ---------- 通用区块头 ---------- */
.page-contact .section-head {
  max-width: 620px;
}

.page-contact .section-head .eyebrow {
  margin: 0 0 14px;
}

.page-contact .section-head .section-title {
  margin: 0;
}

.page-contact .section-head .section-note {
  margin: 16px 0 0;
  color: var(--celadon);
}

/* ---------- 合作方式 ---------- */
.page-contact .co-ways {
  padding-top: var(--co-pad);
}

.page-contact .co-ways-grid {
  display: grid;
  gap: 34px;
}

.page-contact .ways-index {
  margin-top: 28px;
}

.page-contact .ways-index-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .ways-index-link {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  padding: 6px 0;
  color: var(--celadon);
  text-decoration: none;
  font-size: 0.88rem;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .ways-index-link .mono {
  color: var(--gold-deep);
}

.page-contact .ways-index-link:hover,
.page-contact .ways-index-link:focus-visible {
  color: var(--gold-hi);
  border-bottom-color: var(--gold-deep);
}

.page-contact .way-list {
  display: grid;
  gap: 18px;
}

.page-contact .way-card {
  position: relative;
  padding: 30px 24px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line-soft);
  background: var(--co-card-bg);
  overflow: hidden;
}

.page-contact .way-card::after {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: var(--grad-gold);
  opacity: 0.55;
}

.page-contact .way-card--channel {
  background:
    radial-gradient(circle at 88% 8%, rgba(201, 162, 39, 0.16), transparent 60%),
    linear-gradient(150deg, rgba(42, 44, 51, 0.92), rgba(11, 11, 13, 0.96));
}

.page-contact .way-card--content {
  background:
    linear-gradient(150deg, rgba(79, 95, 91, 0.55), rgba(20, 21, 26, 0.95) 68%);
}

.page-contact .way-card--deploy {
  background:
    radial-gradient(circle at 10% 0%, rgba(178, 58, 46, 0.22), transparent 55%),
    linear-gradient(150deg, rgba(42, 44, 51, 0.9), rgba(11, 11, 13, 0.96));
}

.page-contact .way-coord {
  display: inline-block;
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  color: var(--gold-hi);
  border: 1px solid var(--line);
  border-radius: var(--pill);
  padding: 3px 12px;
}

.page-contact .way-title {
  margin: 16px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--ivory);
}

.page-contact .way-intro {
  margin: 14px 0 0;
  max-width: 34em;
  color: var(--ivory);
  opacity: 0.82;
}

.page-contact .way-meta {
  margin: 22px 0 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--line-soft);
}

.page-contact .way-meta-row {
  display: grid;
  gap: 4px;
  margin-bottom: 14px;
}

.page-contact .way-meta-row:last-child {
  margin-bottom: 0;
}

.page-contact .way-meta-row dt {
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  color: var(--celadon);
}

.page-contact .way-meta-row dd {
  margin: 0;
  color: var(--ivory);
  font-size: 0.95rem;
  line-height: 1.75;
}

.page-contact .way-link {
  display: inline-block;
  margin-top: 20px;
  font-size: 0.88rem;
  color: var(--gold-hi);
  text-decoration: none;
  border-bottom: 1px solid var(--gold-deep);
  padding-bottom: 2px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .way-link:hover,
.page-contact .way-link:focus-visible {
  color: var(--gold);
  border-bottom-color: var(--gold-hi);
}

/* ---------- 流程 ---------- */
.page-contact .co-process-grid {
  display: grid;
  gap: 44px;
}

.page-contact .process-timeline {
  position: relative;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .process-timeline::before {
  content: "";
  position: absolute;
  left: 18px;
  top: 10px;
  bottom: 16px;
  width: 1px;
  background: linear-gradient(180deg, var(--gold) 0%, var(--gold-deep) 45%, rgba(140, 106, 31, 0.12) 100%);
}

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

.page-contact .step summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
}

.page-contact .step summary::-webkit-details-marker {
  display: none;
}

.page-contact .step-node {
  position: relative;
  z-index: 1;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 37px;
  height: 37px;
  font-size: 0.8rem;
  color: var(--gold-hi);
  background: var(--ink);
  border: 1px solid var(--gold-deep);
  border-radius: 6px;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-contact .step-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.08rem;
  color: var(--ivory);
}

.page-contact .step-time {
  margin-left: auto;
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--celadon);
  white-space: nowrap;
}

.page-contact .step details[open] > summary .step-node,
.page-contact .step[open] .step-node {
  background: var(--grad-gold);
  color: var(--ink);
  border-color: transparent;
}

.page-contact .step-body {
  padding: 0 0 20px 51px;
}

.page-contact .step-body p {
  margin: 0 0 10px;
  color: var(--ivory);
  opacity: 0.84;
  font-size: 0.95rem;
  line-height: 1.85;
}

.page-contact .step-body .step-out {
  margin: 0;
  font-size: 0.85rem;
  color: var(--gold-hi);
  opacity: 1;
}

.page-contact .process-map {
  margin: 0;
}

.page-contact .process-frame {
  overflow: hidden;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  background:
    linear-gradient(0deg, rgba(11, 11, 13, 0.7), rgba(11, 11, 13, 0.7)),
    repeating-linear-gradient(90deg, rgba(138, 154, 150, 0.14) 0 1px, transparent 1px 44px),
    repeating-linear-gradient(0deg, rgba(138, 154, 150, 0.14) 0 1px, transparent 1px 44px),
    var(--ink-2);
}

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

.page-contact .process-map figcaption {
  margin-top: 12px;
  color: var(--celadon);
}

/* ---------- 服务时间 ---------- */
.page-contact .co-sla-head {
  max-width: 640px;
}

.page-contact .sla-list {
  margin-top: 38px;
  border-top: 1px solid var(--line);
}

.page-contact .sla-row {
  display: grid;
  gap: 6px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .sla-key {
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  color: var(--celadon);
}

.page-contact .sla-val {
  margin: 0;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--ivory);
}

.page-contact .sla-val strong {
  font-family: var(--font-narrow);
  font-variant-numeric: tabular-nums;
  font-weight: 500;
  color: var(--gold-hi);
}

/* ---------- 联系方式 ---------- */
.page-contact .co-contact-head {
  max-width: 660px;
}

.page-contact .contact-table {
  margin-top: 38px;
  border-top: 1px solid var(--line);
}

.page-contact .co-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px 14px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .co-key {
  grid-column: 1 / -1;
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  color: var(--celadon);
}

.page-contact .co-val {
  grid-column: 1;
  font-family: var(--font-narrow);
  font-variant-numeric: tabular-nums;
  font-size: 1.02rem;
  line-height: 1.6;
  color: var(--ivory);
  overflow-wrap: anywhere;
}

.page-contact .co-val--note {
  font-family: var(--font-body);
  font-size: 0.94rem;
  line-height: 1.85;
  color: var(--ivory);
  opacity: 0.85;
}

.page-contact .copy-btn {
  grid-column: 2;
  justify-self: end;
  padding: 6px 18px;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--gold-hi);
  background: transparent;
  border: 1px solid var(--gold-deep);
  border-radius: var(--pill);
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-contact .copy-btn:hover,
.page-contact .copy-btn:focus-visible {
  background: var(--grad-gold);
  color: var(--ink);
}

.page-contact .copy-note {
  grid-column: 1 / -1;
  font-size: 0.75rem;
  color: var(--gold-hi);
  opacity: 0;
  transition: opacity var(--dur) var(--ease);
}

.page-contact .copy-note.is-shown {
  opacity: 1;
}

/* ---------- 准备清单 ---------- */
.page-contact .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 32px;
}

.page-contact .filter-btn {
  padding: 8px 18px;
  font-size: 0.84rem;
  color: var(--celadon);
  background: transparent;
  border: 1px solid var(--line-soft);
  border-radius: var(--pill);
  cursor: pointer;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-contact .filter-btn:hover,
.page-contact .filter-btn:focus-visible {
  color: var(--gold-hi);
  border-color: var(--gold-deep);
}

.page-contact .filter-btn[aria-pressed="true"] {
  background: var(--grad-gold);
  color: var(--ink);
  border-color: transparent;
}

.page-contact .prep-list {
  display: grid;
  gap: 16px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .prep-item {
  position: relative;
  padding: 18px 18px 20px 22px;
  border-left: 2px solid var(--gold-deep);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: linear-gradient(100deg, rgba(201, 162, 39, 0.08), rgba(11, 11, 13, 0) 72%);
}

.page-contact .prep-coord {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--gold-hi);
}

.page-contact .prep-title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  color: var(--ivory);
}

.page-contact .prep-item p {
  margin: 8px 0 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--ivory);
  opacity: 0.78;
}

/* ---------- 收束 ---------- */
.page-contact .co-closing {
  padding: 24px 0 clamp(64px, 9vw, 112px);
}

.page-contact .co-closing-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.4rem, 3.4vw, 1.9rem);
  color: var(--ivory);
}

.page-contact .co-closing-text {
  margin: 14px 0 0;
  color: var(--celadon);
  line-height: 1.9;
}

.page-contact .co-closing-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

/* ---------- 移动端优先的断点 ---------- */
@media (min-width: 720px) {
  .page-contact .co-hero-frame {
    aspect-ratio: 3 / 2;
    border-radius: 140px 140px var(--radius-lg) var(--radius-lg);
  }

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

  .page-contact .way-meta-row {
    grid-template-columns: 110px minmax(0, 1fr);
    align-items: baseline;
    gap: 12px;
  }

  .page-contact .sla-row {
    grid-template-columns: 190px minmax(0, 1fr);
    align-items: baseline;
    gap: 28px;
  }

  .page-contact .co-row {
    grid-template-columns: 150px minmax(0, 1fr) auto 130px;
    gap: 4px 18px;
  }

  .page-contact .co-key {
    grid-column: 1;
  }

  .page-contact .co-val {
    grid-column: 2;
  }

  .page-contact .copy-btn {
    grid-column: 3;
  }

  .page-contact .copy-note {
    grid-column: 4;
    text-align: right;
  }
}

@media (min-width: 960px) {
  .page-contact .co-hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.06fr);
    align-items: center;
    gap: 64px;
  }

  .page-contact .co-ways-grid {
    grid-template-columns: 290px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-contact .co-ways-side {
    position: sticky;
    top: 104px;
  }

  .page-contact .ways-index-list {
    flex-direction: column;
    gap: 4px;
    margin-top: 6px;
  }

  .page-contact .way-list {
    gap: 22px;
  }

  .page-contact .way-card {
    padding: 34px 34px 36px;
  }

  .page-contact .way-card--content {
    width: 94%;
  }

  .page-contact .way-card--deploy {
    width: 88%;
    margin-left: auto;
  }

  .page-contact .co-process-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 64px;
    align-items: start;
  }

  .page-contact .process-map {
    position: sticky;
    top: 104px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .copy-btn,
  .page-contact .filter-btn,
  .page-contact .way-link,
  .page-contact .ways-index-link,
  .page-contact .step-node,
  .page-contact .copy-note,
  .page-contact .co-crumb .breadcrumbs a {
    transition: none;
  }
}