.page-contact {
  background: var(--paper);
  --contact-gap: clamp(24px, 3.4vw, 44px);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  background: var(--night);
  color: var(--on-dark);
  padding: clamp(104px, 15vw, 170px) 0 clamp(44px, 6vw, 80px);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(232, 237, 243, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(232, 237, 243, .05) 1px, transparent 1px);
  background-size: 72px 72px;
  pointer-events: none;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  top: -34%;
  right: -12%;
  width: 62vw;
  height: 62vw;
  max-width: 700px;
  max-height: 700px;
  background: radial-gradient(circle, rgba(31, 166, 166, .24), transparent 68%);
  pointer-events: none;
}

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

.page-contact .contact-hero .breadcrumb {
  margin-bottom: 10px;
}

.page-contact .contact-hero .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .26em;
  color: var(--teal-soft);
}

.page-contact .contact-hero h1 {
  margin: 18px 0 0;
  max-width: 22ch;
  font-size: clamp(2.05rem, 5.6vw, 3.9rem);
  line-height: 1.14;
  letter-spacing: -.02em;
  font-weight: 800;
  color: #fff;
}

.page-contact .contact-hero .lede {
  margin: 22px 0 0;
  max-width: 58ch;
  font-size: clamp(15px, 1.8vw, 17px);
  line-height: 1.8;
  color: var(--on-dark);
}

/* ---------- 双栏骨架 ---------- */
.page-contact .contact-body {
  display: grid;
  gap: var(--contact-gap);
  padding-block: clamp(36px, 5vw, 68px) clamp(48px, 7vw, 96px);
}

@media (min-width: 960px) {
  .page-contact .contact-body {
    grid-template-columns: minmax(258px, 320px) minmax(0, 1fr);
    align-items: start;
    gap: clamp(34px, 4.2vw, 60px);
  }
  .page-contact .contact-side {
    position: sticky;
    top: calc(var(--head-h) + 26px);
  }
}

/* ---------- 左侧联系卡片 ---------- */
.page-contact .contact-card {
  position: relative;
  padding: clamp(20px, 3vw, 28px);
  border: 1px solid rgba(31, 166, 166, .48);
  border-radius: var(--radius);
  background: linear-gradient(158deg, var(--night-2), var(--night) 82%);
  box-shadow: var(--shadow-lift);
  color: var(--on-dark);
}

.page-contact .contact-card::after {
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px solid rgba(232, 237, 243, .09);
  border-radius: var(--radius);
  pointer-events: none;
}

.page-contact .contact-card-kicker {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--teal-soft);
}

.page-contact .contact-card-value {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: clamp(14px, 1.6vw, 16px);
  line-height: 1.45;
  color: #fff;
  word-break: break-all;
}

.page-contact .contact-card-value--num {
  font-size: clamp(18px, 2.4vw, 24px);
  letter-spacing: .02em;
}

.page-contact .contact-card .copy-btn {
  font-size: 12px;
  padding: 6px 13px;
}

.page-contact .contact-card-rule {
  margin: 20px 0;
  border: 0;
  border-top: 1px solid rgba(232, 237, 243, .16);
}

.page-contact .contact-card-meta {
  margin: 0;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 8px 14px;
  font-size: 13px;
  line-height: 1.65;
}

.page-contact .contact-card-meta dt {
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--teal-soft);
}

.page-contact .contact-card-meta dd {
  margin: 0;
  color: var(--on-dark);
}

.page-contact .contact-side-note {
  margin: 18px 0 0;
  padding-left: 12px;
  border-left: 2px solid var(--flame);
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 右栏通用 ---------- */
.page-contact .contact-main > * + * {
  margin-top: clamp(42px, 6vw, 76px);
}

.page-contact .contact-lead {
  margin: 14px 0 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 渠道对照表 ---------- */
.page-contact .table-scroll {
  margin-top: 26px;
  border: 1px solid var(--line-light);
  border-radius: var(--radius);
  background: #fff;
}

.page-contact .data-table th[scope="row"] {
  text-align: left;
  font-weight: 600;
  color: var(--ink);
}

/* ---------- 配图 ---------- */
.page-contact .contact-figure {
  margin: 0;
}

.page-contact .contact-figure .media-canvas {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line-light);
}

.page-contact .contact-figure .media-cap {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 场景分段切换 ---------- */
.page-contact .tabs {
  display: flex;
  flex-wrap: nowrap;
  gap: 4px;
  margin-top: 28px;
  padding-bottom: 1px;
  border-bottom: 1px solid var(--line-light);
  overflow-x: auto;
  scrollbar-width: none;
}

.page-contact .tabs::-webkit-scrollbar {
  display: none;
}

.page-contact .tab {
  flex: 0 0 auto;
  padding: 11px 15px;
  border: 0;
  border-bottom: 2px solid transparent;
  background: transparent;
  font-family: inherit;
  font-size: 14px;
  color: var(--muted);
  cursor: pointer;
  white-space: nowrap;
}

.page-contact .tab:hover {
  color: var(--ink);
}

.page-contact .tab[aria-selected="true"] {
  color: var(--ink);
  font-weight: 700;
  border-bottom-color: var(--teal);
}

.page-contact .tab:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: -3px;
}

.page-contact .tab-panel {
  margin-top: 26px;
}

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

.page-contact .tab-panel:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 6px;
}

/* ---------- 准备清单 ---------- */
.page-contact .prep-list {
  list-style: none;
  margin: 0;
  padding: 1px;
  display: grid;
  gap: 1px;
  background: var(--line-light);
  border: 1px solid var(--line-light);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-contact .prep-list li {
  display: grid;
  gap: 4px;
  padding: 15px 18px;
  background: #fff;
}

@media (min-width: 640px) {
  .page-contact .prep-list li {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 18px;
    align-items: baseline;
  }
}

.page-contact .prep-key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--teal);
  font-weight: 700;
}

.page-contact .prep-val {
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink);
}

/* ---------- 数据反馈步骤 ---------- */
.page-contact .data-steps {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  display: grid;
  gap: var(--contact-gap);
  counter-reset: none;
}

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

.page-contact .data-steps > li {
  padding: 20px 0 0;
  border-top: 2px solid var(--teal);
}

.page-contact .step-no {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--flame);
}

.page-contact .step-title {
  margin: 10px 0 8px;
  font-size: 15.5px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.4;
}

.page-contact .step-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 合作折叠 ---------- */
.page-contact .timeline {
  margin-top: 28px;
  border-top: 1px solid var(--line-light);
}

.page-contact .timeline-item {
  border-bottom: 1px solid var(--line-light);
}

.page-contact .timeline-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 18px 0;
  border: 0;
  background: transparent;
  font-family: inherit;
  font-size: clamp(15px, 1.8vw, 17px);
  font-weight: 700;
  color: var(--ink);
  text-align: left;
  cursor: pointer;
}

.page-contact .timeline-item[data-open] .timeline-trigger {
  color: var(--teal);
}

.page-contact .timeline-trigger:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 4px;
}

.page-contact .timeline-caret {
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  transition: transform 240ms ease;
}

.page-contact .timeline-item[data-open] .timeline-caret {
  transform: rotate(-135deg);
}

.page-contact .timeline-body {
  padding: 0 0 22px;
  max-width: 68ch;
}

.page-contact .timeline-body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--muted);
}

.page-contact .timeline-need {
  margin-top: 10px !important;
  padding-left: 12px;
  border-left: 2px solid var(--flame);
  color: var(--ink) !important;
  font-size: 13.5px !important;
}

/* ---------- 自助清单 ---------- */
.page-contact .self-steps {
  margin: 28px 0 0;
  padding: 0 0 0 22px;
  display: grid;
  gap: 12px;
}

.page-contact .self-steps li {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink);
  padding-left: 4px;
}

.page-contact .self-steps li::marker {
  font-family: var(--font-mono);
  color: var(--teal);
  font-weight: 700;
}

.page-contact .self-steps a {
  color: var(--teal);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .self-steps a:hover {
  color: var(--night);
}

/* ---------- 沟通流程（深色横带） ---------- */
.page-contact .contact-flow {
  position: relative;
  padding: clamp(44px, 6vw, 82px) 0;
  background: var(--night);
  color: var(--on-dark);
}

.page-contact .contact-flow::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(232, 237, 243, .07) 1px, transparent 1px);
  background-size: 26px 26px;
  pointer-events: none;
}

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

.page-contact .contact-flow .section-title {
  color: #fff;
}

.page-contact .flow-grid {
  display: grid;
  gap: var(--contact-gap);
  margin-top: 30px;
}

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

.page-contact .flow-step {
  padding: 22px 20px 24px;
  border: 1px solid var(--line-dark);
  border-top: 2px solid var(--teal);
  border-radius: var(--radius);
  background: rgba(18, 48, 90, .55);
}

.page-contact .flow-no {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--flame);
}

.page-contact .flow-title {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  line-height: 1.4;
}

.page-contact .flow-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--on-dark);
}

/* ---------- 站点信息 ---------- */
.page-contact .contact-siteinfo {
  padding: clamp(38px, 5vw, 64px) 0 clamp(48px, 6vw, 80px);
  background: #fff;
  border-top: 1px solid var(--line-light);
}

.page-contact .siteinfo-grid {
  display: grid;
  gap: 22px;
  margin-top: 28px;
}

@media (min-width: 700px) {
  .page-contact .siteinfo-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .page-contact .siteinfo-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 28px;
  }
}

.page-contact .siteinfo-item {
  padding-top: 14px;
  border-top: 1px solid var(--line-light);
}

.page-contact .siteinfo-label {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--muted);
}

.page-contact .siteinfo-value {
  margin: 0;
  font-size: 15px;
  line-height: 1.65;
  color: var(--ink);
  word-break: break-word;
}

.page-contact .siteinfo-value--num {
  font-family: var(--font-mono);
  letter-spacing: .01em;
}

.page-contact .siteinfo-note {
  margin: 32px 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--line-light);
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--muted);
  max-width: 68ch;
}

.page-contact .siteinfo-note a {
  color: var(--teal);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .siteinfo-note a:hover {
  color: var(--night);
}

/* ---------- 减弱动态 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-contact .timeline-caret {
    transition: none;
  }
}
<<<END>>>