.page-contact {
  --co-gap: clamp(56px, 8vw, 104px);
  --co-card-pad: clamp(20px, 2.6vw, 28px);
  --co-line-soft: rgba(127, 168, 147, .38);
  background: var(--paper);
  color: var(--body);
  font-family: var(--sans);
  overflow-x: hidden;
}

.page-contact .co-wrap {
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--pad);
}

.page-contact a:focus-visible,
.page-contact button:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

/* ---------- 首屏 ---------- */
.co-hero {
  background: var(--ink);
  color: var(--paper);
  padding-block: clamp(22px, 3.4vw, 38px) clamp(40px, 6vw, 72px);
}

.co-hero-inner {
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--pad);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 48px);
}

.co-hero-copy { min-width: 0; }

.page-contact .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  font-size: 13px;
  color: rgba(244, 239, 227, .62);
  margin-bottom: clamp(18px, 3vw, 28px);
}

.page-contact .breadcrumb a {
  color: rgba(244, 239, 227, .88);
  text-decoration: none;
  border-bottom: 1px solid rgba(217, 164, 65, .45);
}

.page-contact .breadcrumb a:hover { color: var(--gold-bright); }

.page-contact .breadcrumb-sep {
  margin-inline: 8px;
  color: rgba(217, 164, 65, .7);
}

.co-hero .kicker {
  margin: 0 0 14px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--gold);
}

.co-hero .display {
  margin: 0 0 18px;
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(30px, 4.6vw, 54px);
  line-height: 1.16;
  letter-spacing: -.01em;
  color: var(--paper);
}

.co-hero .lede {
  margin: 0 0 clamp(22px, 3vw, 32px);
  max-width: 54ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.8;
  color: rgba(244, 239, 227, .82);
}

.co-quick {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-contact .co-quick .btn {
  text-decoration: none;
  font-size: 14px;
}

.page-contact .co-quick .btn--outline {
  color: var(--paper);
  border: 1px solid rgba(217, 164, 65, .55);
  background: transparent;
}

.page-contact .co-quick .btn--outline:hover {
  color: var(--gold-bright);
  border-color: var(--gold);
  background: rgba(217, 164, 65, .12);
}

.co-hero-figure {
  margin: 0;
  aspect-ratio: 16 / 9;
  border: 1px solid rgba(217, 164, 65, .42);
  border-radius: 6px;
  overflow: hidden;
  background: var(--ink-2);
}

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

/* ---------- 分流卡片 ---------- */
.co-routes { padding-block: var(--co-gap) calc(var(--co-gap) * .55); }

.co-sec-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  margin-bottom: clamp(30px, 4vw, 52px);
}

.co-sec-num {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(46px, 7vw, 84px);
  line-height: .85;
  color: var(--gold);
  opacity: .42;
  letter-spacing: .02em;
}

.co-sec-head .section-title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(24px, 2.8vw, 32px);
  line-height: 1.35;
  color: var(--ink);
}

.co-sec-lead {
  margin: 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--body-soft);
}

.co-route-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 2.4vw, 26px);
  align-items: start;
}

.co-route {
  position: relative;
  padding: var(--co-card-pad);
  background: var(--paper-card);
  border: 1px solid var(--co-line-soft);
  border-radius: 6px;
  transition: transform 180ms var(--ease), border-color 180ms var(--ease), box-shadow 180ms var(--ease);
}

.co-route::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  bottom: 18px;
  width: 3px;
  background: var(--gold);
  opacity: .55;
  transition: opacity 180ms var(--ease);
}

.co-route:hover,
.co-route:focus-within {
  transform: translateY(-2px);
  border-color: var(--gold);
  box-shadow: 0 10px 24px rgba(11, 43, 36, .08);
}

.co-route:hover::before,
.co-route:focus-within::before { opacity: 1; }

.co-route-kicker {
  margin: 0 0 10px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--amber);
}

.co-route-title {
  margin: 0 0 12px;
  font-family: var(--serif);
  font-weight: 600;
  font-size: 19px;
  line-height: 1.45;
  color: var(--ink);
}

.co-route-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--body-soft);
}

.co-route-more {
  margin: 0;
  max-height: none;
  opacity: 1;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
  transition: max-height 180ms var(--ease), opacity 160ms var(--ease), margin-top 180ms var(--ease);
}

.co-inline-link {
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px solid rgba(185, 118, 42, .4);
}

.co-inline-link:hover { color: var(--gold); }

.co-route-foot {
  margin: 18px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--co-line-soft);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--muted);
}

/* ---------- 联系渠道 + 流程 ---------- */
.co-channel { padding-block: calc(var(--co-gap) * .55) var(--co-gap); }

.co-channel-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 4.5vw, 56px);
  align-items: start;
}

.co-channel-card {
  padding: clamp(22px, 3vw, 32px);
  background: var(--moss);
  color: var(--paper);
  border: 1px solid var(--gold);
  border-radius: 8px;
}

.co-card-kicker {
  margin: 0 0 10px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--gold-bright);
}

.co-card-title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(20px, 2.2vw, 24px);
  line-height: 1.4;
  color: var(--paper);
}

.page-contact .co-channel-card .contact-list {
  display: grid;
  gap: 0;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .co-channel-card .contact-item {
  display: grid;
  gap: 7px;
  padding-block: 15px;
  border-top: 1px solid rgba(217, 164, 65, .26);
}

.page-contact .co-channel-card .contact-item:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-contact .co-channel-card .contact-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: rgba(244, 239, 227, .62);
}

.page-contact .co-channel-card .contact-value {
  font-size: 15px;
  line-height: 1.7;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-contact .co-channel-card .contact-value--mono {
  font-family: var(--mono);
  font-size: 13.5px;
  letter-spacing: .03em;
}

.page-contact .co-channel-card .contact-mail-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.page-contact .co-channel-card .copy-btn {
  flex: none;
  padding: 4px 11px;
  font-family: var(--sans);
  font-size: 12px;
  color: var(--gold-bright);
  background: transparent;
  border: 1px solid rgba(217, 164, 65, .6);
  border-radius: 4px;
  cursor: pointer;
  transition: background 150ms var(--ease), color 150ms var(--ease);
}

.page-contact .co-channel-card .copy-btn:hover {
  background: var(--gold);
  color: var(--ink);
  border-color: var(--gold);
}

.page-contact .co-channel-card .copy-feedback {
  min-height: 16px;
  font-size: 12px;
  color: var(--gold-bright);
}

.co-channel-note {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px solid rgba(217, 164, 65, .26);
  font-size: 13px;
  line-height: 1.75;
  color: rgba(244, 239, 227, .78);
}

.co-flow { min-width: 0; }

.co-flow-title {
  margin: 0 0 18px;
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(20px, 2.2vw, 24px);
  line-height: 1.4;
  color: var(--ink);
}

.co-flow-title--steps { margin-top: clamp(34px, 4.5vw, 52px); }

.co-check {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.co-check-item {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 14px 16px;
  background: var(--paper-2);
  border-radius: 5px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--body-soft);
}

.co-check-item strong {
  font-weight: 600;
  color: var(--ink);
}

.co-check-idx {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--amber);
  padding-top: 3px;
}

.co-steps {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}

.co-steps-line {
  position: absolute;
  left: 12px;
  top: 10px;
  width: 2px;
  height: calc(100% - 32px);
  color: var(--line);
  pointer-events: none;
}

.co-step {
  position: relative;
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 0 clamp(14px, 2vw, 22px);
  padding-bottom: clamp(20px, 2.8vw, 28px);
}

.co-step-node {
  grid-column: 1;
  justify-self: center;
  width: 13px;
  height: 13px;
  margin-top: 6px;
  border: 2px solid var(--gold);
  border-radius: 50%;
  background: var(--paper);
  transition: background 160ms var(--ease), transform 160ms var(--ease);
}

.co-step:hover .co-step-node,
.co-step:focus-within .co-step-node {
  background: var(--gold);
  transform: scale(1.15);
}

.co-step-body { min-width: 0; }

.co-step-title {
  margin: 0 0 6px;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 17px;
  line-height: 1.5;
  color: var(--ink);
}

.co-step-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--body-soft);
}

.co-step-note {
  margin: 8px 0 0;
  max-height: none;
  opacity: 1;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
  transition: max-height 180ms var(--ease), opacity 160ms var(--ease);
}

.co-flow-figure {
  margin: clamp(26px, 3.5vw, 38px) 0 0;
  border: 1px solid var(--co-line-soft);
  border-radius: 6px;
  overflow: hidden;
  background: var(--ink-2);
}

.co-flow-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 紧急问题优先路径 ---------- */
.co-urgent {
  background: var(--ink);
  color: var(--paper);
  padding-block: clamp(46px, 6vw, 80px);
}

.co-urgent-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 44px);
  align-items: start;
}

.co-urgent-panel {
  padding: clamp(22px, 3vw, 34px);
  background: var(--ink-2);
  border-left: 3px solid var(--gold);
  border-radius: 6px;
}

.co-urgent-title {
  margin: 0 0 14px;
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(22px, 2.6vw, 30px);
  line-height: 1.36;
  color: var(--paper);
}

.co-urgent-text {
  margin: 0 0 clamp(20px, 2.6vw, 26px);
  max-width: 60ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(244, 239, 227, .82);
}

.page-contact .co-urgent-panel .btn--gold { text-decoration: none; }

.co-urgent-meta {
  margin: 16px 0 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: rgba(244, 239, 227, .6);
}

.co-related-title {
  margin: 0 0 14px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--gold-bright);
}

.co-related-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
}

.co-related-list li { border-top: 1px solid rgba(127, 168, 147, .3); }

.co-related-list li:last-child { border-bottom: 1px solid rgba(127, 168, 147, .3); }

.co-related-list a {
  display: block;
  padding: 13px 2px;
  font-size: 14.5px;
  line-height: 1.65;
  color: rgba(244, 239, 227, .86);
  text-decoration: none;
  transition: color 150ms var(--ease), padding-left 150ms var(--ease);
}

.co-related-list a:hover {
  color: var(--gold-bright);
  padding-left: 8px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .co-check { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .co-sec-head { grid-template-columns: minmax(0, 1fr); }
}

@media (min-width: 820px) {
  .co-route-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .co-route:nth-child(1) { margin-top: 0; }
  .co-route:nth-child(2) { margin-top: 26px; }
  .co-route:nth-child(3) { margin-top: 52px; }

  .co-route-more {
    max-height: 0;
    opacity: 0;
    margin-top: 0;
    overflow: hidden;
  }

  .co-route:hover .co-route-more,
  .co-route:focus-within .co-route-more {
    max-height: 90px;
    opacity: 1;
    margin-top: 10px;
  }
}

@media (min-width: 940px) {
  .co-hero-inner {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, .96fr);
    align-items: center;
  }

  .co-channel-inner {
    grid-template-columns: minmax(0, 360px) minmax(0, 1fr);
    gap: clamp(34px, 5vw, 64px);
  }

  .co-channel-card {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }

  .co-urgent-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 330px);
    gap: clamp(30px, 4.5vw, 56px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .co-route,
  .page-contact .co-step-node,
  .page-contact .co-related-list a,
  .page-contact .co-route-more,
  .page-contact .co-step-note {
    transition: none;
  }

  .page-contact .co-route:hover,
  .page-contact .co-route:focus-within,
  .page-contact .co-step:hover .co-step-node {
    transform: none;
  }
}