.page-contact {
  background: var(--paper);
  color: var(--text);
  font-family: var(--font-sans);
}

/* ============ 首屏 ============ */
.page-contact .ct-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--paper);
  padding: 20px 0 30px;
}
.page-contact .ct-hero::before {
  content: "4478";
  position: absolute;
  right: -8px;
  top: -26px;
  font-family: var(--font-mono);
  font-size: 132px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.05em;
  color: var(--sea);
  pointer-events: none;
}
.page-contact .ct-hero .wrap {
  position: relative;
  z-index: 1;
}

.page-contact .breadcrumbs {
  font-size: 12px;
  letter-spacing: 0.04em;
}
.page-contact .breadcrumbs ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}
.page-contact .breadcrumbs li {
  display: flex;
  align-items: center;
  gap: 6px;
}
.page-contact .breadcrumbs li + li::before {
  content: "/";
  color: var(--line);
}
.page-contact .breadcrumbs a {
  color: var(--paper);
  opacity: 0.7;
  text-decoration: none;
  transition: opacity var(--t-fast) linear;
}
.page-contact .breadcrumbs a:hover {
  opacity: 1;
  color: var(--mint);
}
.page-contact .breadcrumbs li[aria-current] {
  color: var(--mint);
}

.page-contact .ct-title {
  margin: 16px 0 0;
  font-size: 27px;
  line-height: 1.18;
  font-weight: 900;
  letter-spacing: -0.01em;
  max-width: 15em;
}
.page-contact .ct-lead {
  margin: 14px 0 0;
  max-width: 40em;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--paper);
  opacity: 0.82;
}

.page-contact .ct-meta {
  list-style: none;
  margin: 22px 0 0;
  padding: 14px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 0;
  border-top: 1px solid var(--sea);
}
.page-contact .ct-meta li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-right: 18px;
  margin-right: 18px;
  border-right: 1px solid var(--sea);
}
.page-contact .ct-meta li:last-child {
  padding-right: 0;
  margin-right: 0;
  border-right: 0;
}
.page-contact .ct-meta-k {
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--line);
}
.page-contact .ct-meta-v {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--paper);
}
.page-contact .ct-meta li:first-child .ct-meta-v {
  color: var(--mint);
}

/* ============ 两栏骨架 ============ */
.page-contact .ct-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  padding: 28px 24px 56px;
}

/* ============ 左侧联系卡组 ============ */
.page-contact .ct-cards {
  display: grid;
  gap: 10px;
}
.page-contact .ct-card {
  position: relative;
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 18px 16px 16px;
  transition: border-color var(--t-fast) linear;
}
.page-contact .ct-card:hover {
  border-color: var(--orange);
}
.page-contact .ct-card--dark {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}
.page-contact .ct-card--dark:hover {
  border-color: var(--orange);
}
.page-contact .ct-card--accent {
  border-left: 3px solid var(--orange);
}
.page-contact .ct-tag {
  position: absolute;
  top: -1px;
  right: -1px;
  background: var(--mint);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  padding: 4px 7px;
}
.page-contact .ct-card-k {
  margin: 0 0 8px;
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--line);
}
.page-contact .ct-card--dark .ct-card-k {
  color: var(--mint);
}
.page-contact .ct-card-v {
  margin: 0 0 10px;
  font-size: 14.5px;
  line-height: 1.6;
  font-weight: 700;
  word-break: break-word;
}
.page-contact .ct-card-v--mono {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.01em;
}
.page-contact .ct-card--dark .ct-card-v {
  color: var(--mint);
}
.page-contact .ct-card-d {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--text);
  opacity: 0.72;
}
.page-contact .ct-card--dark .ct-card-d {
  color: var(--paper);
  opacity: 0.78;
}
.page-contact .ct-side-note {
  margin: 14px 0 0;
  padding-left: 10px;
  border-left: 2px solid var(--amber);
  font-size: 12px;
  line-height: 1.75;
  color: var(--text);
  opacity: 0.7;
}
.page-contact .ct-side-note a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid var(--blue);
}
.page-contact .ct-side-note a:hover {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

/* ============ 右侧章节 ============ */
.page-contact .ct-sec {
  margin-top: 30px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}
.page-contact .ct-sec:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}
.page-contact .ct-sec-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 12px;
}
.page-contact .ct-sec-idx {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--orange);
  flex: 0 0 auto;
}
.page-contact .ct-sec h2 {
  margin: 0;
  font-size: 20px;
  line-height: 1.32;
  font-weight: 800;
  letter-spacing: -0.01em;
  flex: 1 1 auto;
}
.page-contact .ct-p {
  margin: 0 0 16px;
  max-width: 42em;
  font-size: 14px;
  line-height: 1.85;
}
.page-contact .ct-p a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid var(--blue);
}
.page-contact .ct-p a:hover {
  color: var(--orange);
  border-bottom-color: var(--orange);
}
.page-contact .ct-hint {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.7;
  letter-spacing: 0.01em;
  color: var(--text);
  opacity: 0.62;
}

/* ============ 准备清单 ============ */
.page-contact .ct-check {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}
.page-contact .ct-check-item {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 14px;
  background: var(--grid);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background var(--t-fast) linear, border-color var(--t-fast) linear;
}
.page-contact .ct-check-item:hover {
  border-color: var(--line);
}
.page-contact .ct-check-item input {
  position: absolute;
  top: 14px;
  left: 14px;
  width: 1px;
  height: 1px;
  opacity: 0;
}
.page-contact .ct-check-box {
  flex: 0 0 auto;
  position: relative;
  width: 18px;
  height: 18px;
  margin-top: 2px;
  background: var(--paper);
  border: 1px solid var(--line);
  transition: background var(--t-fast) linear, border-color var(--t-fast) linear;
}
.page-contact .ct-check-item input:checked ~ .ct-check-box {
  background: var(--mint);
  border-color: var(--mint-deep);
}
.page-contact .ct-check-item input:checked ~ .ct-check-box::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 0;
  width: 5px;
  height: 10px;
  border-right: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  transform: rotate(40deg);
}
.page-contact .ct-check-item input:focus-visible ~ .ct-check-box {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}
.page-contact .ct-check-body {
  display: block;
  transition: opacity var(--t-fast) linear;
}
.page-contact .ct-check-item input:checked ~ .ct-check-body {
  opacity: 0.5;
}
.page-contact .ct-check-name {
  display: block;
  font-size: 14px;
  font-weight: 700;
}
.page-contact .ct-check-why {
  display: block;
  margin-top: 3px;
  font-size: 12.5px;
  line-height: 1.7;
  opacity: 0.98;
}

/* ============ 图 ============ */
.page-contact .ct-fig {
  margin: 24px 0 0;
}
.page-contact .ct-fig .media {
  border: 1px solid var(--line);
}
.page-contact .ct-fig img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}
.page-contact .ct-fig .media-cap {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.6;
  letter-spacing: 0.03em;
  color: var(--text);
  opacity: 0.62;
}

/* ============ 时段轴 ============ */
.page-contact .ct-axis {
  margin: 0 0 20px;
}
.page-contact .ct-axis-bar {
  display: flex;
  height: 10px;
  border: 1px solid var(--line);
}
.page-contact .ct-axis-seg {
  display: block;
  height: 100%;
}
.page-contact .ct-axis-seg--am {
  flex: 1 1 0;
  background: var(--orange);
}
.page-contact .ct-axis-seg--pm {
  flex: 2 1 0;
  background: var(--blue);
}
.page-contact .ct-axis-legend {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.02em;
  color: var(--text);
  opacity: 0.72;
}
.page-contact .ct-axis-legend li {
  display: flex;
  align-items: center;
  gap: 6px;
}
.page-contact .ct-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
}
.page-contact .ct-dot--am {
  background: var(--orange);
}
.page-contact .ct-dot--pm {
  background: var(--blue);
}

/* ============ 处理顺序 ============ */
.page-contact .ct-pri {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-contact .ct-pri li {
  position: relative;
  padding: 12px 14px 12px 44px;
  background: var(--paper);
  border: 1px solid var(--line);
}
.page-contact .ct-pri li b {
  display: block;
  font-size: 13.5px;
  line-height: 1.6;
  font-weight: 800;
  margin-bottom: 3px;
}
.page-contact .ct-pri li span {
  display: block;
  font-size: 12.5px;
  line-height: 1.7;
  opacity: 0.75;
}
.page-contact .ct-pri-num {
  display: none;
}
.page-contact .ct-pri li::before {
  counter-increment: none;
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--orange);
}
.page-contact .ct-pri li:nth-child(2)::before {
  background: var(--blue);
}
.page-contact .ct-pri li:nth-child(3)::before {
  background: var(--mint);
}

/* ============ 合作方式折叠组 ============ */
.page-contact .ct-acc {
  border: 1px solid var(--line);
  border-top: 0;
  background: var(--paper);
}
.page-contact .ct-acc:first-of-type {
  border-top: 1px solid var(--line);
}
.page-contact .ct-acc summary {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 40px 14px 14px;
  cursor: pointer;
  list-style: none;
  transition: background var(--t-mid) var(--ease);
}
.page-contact .ct-acc summary::-webkit-details-marker {
  display: none;
}
.page-contact .ct-acc summary:hover {
  background: var(--grid);
}
.page-contact .ct-acc[open] summary {
  background: var(--grid);
}
.page-contact .ct-acc summary::after {
  content: "+";
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 600;
  color: var(--orange);
  line-height: 1;
}
.page-contact .ct-acc[open] summary::after {
  content: "\2212";
}
.page-contact .ct-acc summary:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: -2px;
}
.page-contact .ct-acc-idx {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  background: var(--mint);
  color: var(--ink);
  padding: 3px 6px;
}
.page-contact .ct-acc-title {
  font-size: 14.5px;
  font-weight: 800;
}
.page-contact .ct-acc-meta {
  margin-left: auto;
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--text);
  opacity: 0.55;
  white-space: nowrap;
}
.page-contact .ct-acc-body {
  padding: 4px 14px 16px;
  border-top: 1px solid var(--line);
}
.page-contact .ct-acc-body p {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.85;
  max-width: 42em;
}

/* ============ 四步流程 ============ */
.page-contact .ct-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-contact .ct-steps li {
  background: var(--paper);
  border: 1px solid var(--line);
  border-top: 3px solid var(--orange);
  padding: 14px 16px 16px;
}
.page-contact .ct-steps li:nth-child(2) {
  border-top-color: var(--blue);
}
.page-contact .ct-steps li:nth-child(3) {
  border-top-color: var(--sea);
}
.page-contact .ct-steps li:nth-child(4) {
  border-top-color: var(--mint);
}
.page-contact .ct-step-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--orange);
}
.page-contact .ct-steps h3 {
  margin: 6px 0 6px;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: -0.01em;
}
.page-contact .ct-steps p {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.75;
  opacity: 0.75;
}

/* ============ 备案信息 ============ */
.page-contact .ct-facts {
  margin: 0 0 16px;
  border-top: 1px solid var(--line);
}
.page-contact .ct-facts > div {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}
.page-contact .ct-facts dt {
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--line);
}
.page-contact .ct-facts dd {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  font-weight: 600;
  word-break: break-word;
}
.page-contact .ct-facts-mono {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 13px;
}

/* ============ 延伸入口 ============ */
.page-contact .ct-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.page-contact .ct-links li {
  background: var(--paper);
}
.page-contact .ct-links a {
  display: block;
  padding: 13px 14px;
  color: var(--text);
  font-size: 13px;
  line-height: 1.6;
  text-decoration: none;
  transition: background var(--t-fast) linear, color var(--t-fast) linear;
}
.page-contact .ct-links a:hover {
  background: var(--grid);
  color: var(--blue);
}
.page-contact .ct-links a::before {
  content: "\2192";
  font-family: var(--font-mono);
  margin-right: 8px;
  color: var(--orange);
}

/* ============ 断点 ============ */
@media (min-width: 640px) {
  .page-contact .ct-title {
    font-size: 34px;
  }
  .page-contact .ct-lead {
    font-size: 15px;
  }
  .page-contact .ct-hero::before {
    font-size: 168px;
    top: -34px;
  }
  .page-contact .ct-sec h2 {
    font-size: 22px;
  }
  .page-contact .ct-facts > div {
    grid-template-columns: 130px minmax(0, 1fr);
    align-items: baseline;
    gap: 14px;
  }
  .page-contact .ct-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-contact .ct-links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-contact .ct-hero {
    padding: 26px 0 38px;
  }
  .page-contact .ct-hero::before {
    font-size: 208px;
    top: -42px;
    right: 12px;
  }
  .page-contact .ct-title {
    font-size: 42px;
    line-height: 1.1;
    max-width: 14em;
  }
  .page-contact .ct-lead {
    font-size: 15.5px;
    max-width: 38em;
  }
  .page-contact .ct-body {
    grid-template-columns: 318px minmax(0, 1fr);
    gap: 0;
    padding-top: 40px;
    padding-bottom: 72px;
  }
  .page-contact .ct-side {
    align-self: start;
    position: sticky;
    top: calc(var(--strip-h) + var(--bar-h) + 16px);
    padding-right: 30px;
    border-right: 1px solid var(--line);
  }
  .page-contact .ct-flow {
    padding-left: 38px;
    min-width: 0;
  }
  .page-contact .ct-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 8px;
  }
  .page-contact .ct-steps p {
    font-size: 12px;
  }
  .page-contact .ct-sec h2 {
    font-size: 23px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-card,
  .page-contact .ct-check-item,
  .page-contact .ct-check-box,
  .page-contact .ct-check-body,
  .page-contact .ct-acc summary,
  .page-contact .ct-links a,
  .page-contact .breadcrumbs a {
    transition-duration: 0ms;
  }
}
<<<END>>>