.page-contact {
  --cc-shell-gap: clamp(28px, 4vw, 60px);
  --cc-shadow: 0 18px 44px rgba(8, 23, 38, 0.09);
  background: var(--paper);
  color: var(--ink);
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumbs {
  padding: 102px 0 10px;
}
.page-contact .breadcrumbs ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--ink-mute);
}
.page-contact .breadcrumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--c-slate);
}
.page-contact .breadcrumbs a {
  color: var(--c-azure);
  text-decoration: none;
}
.page-contact .breadcrumbs a:hover {
  text-decoration: underline;
}

/* ---------- 首屏工作台 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  margin-top: 14px;
  padding: clamp(30px, 5vw, 58px) 0 clamp(34px, 6vw, 72px);
  background: linear-gradient(158deg, var(--c-deep) 0%, var(--c-midnight) 62%, #102940 100%);
  color: var(--c-mist);
  border-radius: 0 0 var(--r-xl) var(--r-xl);
}
.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(198, 210, 221, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(198, 210, 221, 0.07) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}
.page-contact .contact-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 44px);
}

.page-contact .picker-label {
  margin: 0 0 8px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--c-mint);
}
.page-contact .picker-label .mono {
  font-size: 18px;
  color: var(--c-lime);
  margin-right: 4px;
}
.page-contact .picker-hint {
  margin: 0 0 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-silver);
  max-width: 40ch;
}
.page-contact .column-picker {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.page-contact .column-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 14px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line-dark);
  background: rgba(234, 241, 246, 0.04);
  color: var(--c-silver);
  font-size: 14px;
  line-height: 1;
  text-decoration: none;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease),
    color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.page-contact .column-chip .mono {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--c-slate);
}
.page-contact .column-chip:hover {
  border-color: var(--c-lime);
  background: rgba(163, 230, 53, 0.12);
  color: var(--c-ivory);
  transform: translateY(-1px);
}
.page-contact .column-chip:hover .mono {
  color: var(--c-lime);
}
.page-contact .column-chip:focus-visible {
  outline: 2px solid var(--c-lime);
  outline-offset: 2px;
}

.page-contact .contact-hero__pulse {
  min-width: 0;
}
.page-contact .contact-hero__pulse .tag {
  margin-bottom: 16px;
}
.page-contact h1 {
  margin: 0 0 16px;
  font-size: clamp(30px, 4.6vw, 56px);
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: #fff;
  font-weight: 800;
}
.page-contact .hero-lede {
  margin: 0 0 26px;
  max-width: 62ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--c-silver);
}
.page-contact .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 30px;
}
.page-contact .hero-facts {
  list-style: none;
  margin: 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--line-dark);
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
.page-contact .hero-facts li {
  display: flex;
  align-items: baseline;
  gap: 12px;
}
.page-contact .hero-facts__num {
  font-size: 28px;
  line-height: 1;
  color: var(--c-lime);
  min-width: 54px;
}
.page-contact .hero-facts__txt {
  font-size: 14px;
  line-height: 1.6;
  color: var(--c-silver);
}

.page-contact .hero-figure {
  position: relative;
  z-index: 1;
  margin: clamp(30px, 4vw, 46px) 0 0;
}

/* ---------- 媒体容器内的图片 ---------- */
.page-contact .media-frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 分屏骨架 ---------- */
.page-contact .shell {
  display: block;
}
.page-contact .rail {
  display: none;
}
.page-contact .rail-title {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--c-slate);
}
.page-contact .rail-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 11px 2px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  color: var(--ink-mute);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease), padding-left var(--dur-fast) var(--ease);
}
.page-contact .rail-link:hover {
  color: var(--ink);
  padding-left: 6px;
}
.page-contact .rail-link[aria-current="true"] {
  color: var(--c-deep);
  font-weight: 700;
}
.page-contact .rail-index {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--c-slate);
}
.page-contact .rail-link[aria-current="true"] .rail-index {
  color: var(--c-azure);
}

/* ---------- 章节通用 ---------- */
.page-contact .cc-section {
  padding: clamp(38px, 6vw, 68px) 0;
  border-top: 1px solid var(--line);
}
.page-contact .cc-section__head {
  margin-bottom: clamp(20px, 3vw, 30px);
}
.page-contact .cc-eyebrow {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--c-azure);
}
.page-contact .cc-eyebrow .mono {
  font-size: 13px;
  padding: 2px 7px;
  border-radius: var(--r-sm);
  background: var(--paper-alt);
  color: var(--c-deep);
}
.page-contact .cc-section h2 {
  margin: 0 0 12px;
  font-size: clamp(24px, 3.2vw, 38px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.page-contact .cc-lede {
  margin: 0;
  max-width: 70ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.78;
  color: var(--ink-soft);
}
.page-contact .cc-footnote {
  margin: 18px 0 0;
  padding: 14px 18px;
  border-radius: var(--r-md);
  background: var(--paper-alt);
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}
.page-contact .cc-footnote a {
  color: var(--c-azure);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 123, 181, 0.4);
}
.page-contact .cc-footnote a:hover {
  border-bottom-color: var(--c-azure);
}

/* ---------- 01 栏目对照表 ---------- */
.page-contact .table-scroll {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--c-ivory);
  box-shadow: var(--cc-shadow);
  -webkit-overflow-scrolling: touch;
}
.page-contact .column-map {
  width: 100%;
  min-width: 660px;
  border-collapse: collapse;
  font-size: 15px;
}
.page-contact .column-map th {
  text-align: left;
  padding: 14px 18px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--ink-mute);
  background: var(--paper-alt);
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}
.page-contact .column-map td {
  padding: 15px 18px;
  border-bottom: 1px solid var(--line);
  vertical-align: middle;
  color: var(--ink-soft);
  line-height: 1.6;
}
.page-contact .column-map .mono {
  color: var(--c-slate);
  font-size: 13px;
  letter-spacing: 0.08em;
}
.page-contact .cm-name {
  color: var(--ink);
  font-weight: 600;
  white-space: nowrap;
}
.page-contact .column-map tbody tr {
  scroll-margin-top: calc(var(--header-h) + 24px);
  transition: background var(--dur-fast) var(--ease);
}
.page-contact .column-map tbody tr:hover {
  background: rgba(163, 230, 53, 0.12);
}
.page-contact .column-map tbody tr:target {
  background: rgba(163, 230, 53, 0.2);
  box-shadow: inset 4px 0 0 var(--c-lime);
}
.page-contact .column-map tbody tr:last-child td {
  border-bottom: 0;
}

/* ---------- 02 提交步骤 ---------- */
.page-contact .steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  counter-reset: step;
}
.page-contact .step {
  position: relative;
  padding: 22px 20px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--c-ivory);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.page-contact .step:hover {
  border-color: rgba(163, 230, 53, 0.7);
  transform: translateY(-2px);
}
.page-contact .step-num {
  display: inline-block;
  margin-bottom: 12px;
  padding: 3px 9px;
  border-radius: var(--r-sm);
  background: var(--c-deep);
  color: var(--c-lime);
  font-size: 12px;
  letter-spacing: 0.12em;
}
.page-contact .step h3 {
  margin: 0 0 8px;
  font-size: 17px;
  line-height: 1.4;
  color: var(--ink);
}
.page-contact .step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}
.page-contact .step details {
  margin-top: 14px;
  padding-top: 11px;
  border-top: 1px dashed var(--line);
}
.page-contact .step summary {
  cursor: pointer;
  list-style: none;
  font-size: 13px;
  font-weight: 600;
  color: var(--c-azure);
}
.page-contact .step summary::-webkit-details-marker {
  display: none;
}
.page-contact .step summary::after {
  content: " +";
  font-family: var(--font-mono);
}
.page-contact .step details[open] summary::after {
  content: " –";
}
.page-contact .step summary:focus-visible {
  outline: 2px solid var(--c-azure);
  outline-offset: 3px;
  border-radius: 4px;
}
.page-contact .step details p {
  margin-top: 8px;
  font-size: 13px;
  color: var(--ink-mute);
}

/* ---------- 03 联系渠道 ---------- */
.page-contact .channel-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
.page-contact .channel-card {
  padding: 24px 22px;
  border-radius: var(--r-lg);
  background: linear-gradient(160deg, var(--c-deep), var(--c-midnight));
  color: var(--c-mist);
}
.page-contact .channel-card--mail {
  border-top: 4px solid var(--c-lime);
}
.page-contact .channel-key {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--c-mint);
}
.page-contact .channel-val {
  margin: 12px 0 12px;
  font-size: 17px;
  line-height: 1.55;
  color: #fff;
  word-break: break-word;
}
.page-contact .channel-note {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-silver);
}
.page-contact .channel-callout {
  margin: 18px 0 0;
  padding: 18px 20px;
  border-radius: var(--r-md);
  border-left: 4px solid var(--c-amber);
  background: var(--paper-alt);
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}
.page-contact .channel-figure {
  margin: clamp(24px, 4vw, 36px) 0 0;
}

/* ---------- 04 品牌协作 ---------- */
.page-contact .partner-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
.page-contact .partner-card {
  padding: 24px 22px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--c-ivory);
}
.page-contact .partner-card h3 {
  margin: 14px 0 10px;
  font-size: 19px;
  line-height: 1.4;
  color: var(--ink);
}
.page-contact .partner-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--ink-soft);
}
.page-contact .partner-meta {
  margin-top: 14px !important;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-azure);
}

/* ---------- 05 响应节奏 ---------- */
.page-contact .tempo {
  list-style: none;
  margin: 0;
  padding: 0 0 0 28px;
  position: relative;
  display: grid;
  gap: 22px;
}
.page-contact .tempo::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--c-lime), var(--c-mint), var(--c-amber));
}
.page-contact .tempo li {
  position: relative;
}
.page-contact .tempo li::before {
  content: "";
  position: absolute;
  left: -28px;
  top: 5px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-ivory);
  border: 3px solid var(--c-lime);
  box-sizing: content-box;
}
.page-contact .tempo-time {
  display: block;
  margin-bottom: 6px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-azure);
}
.page-contact .tempo h3 {
  margin: 0 0 6px;
  font-size: 16px;
  color: var(--ink);
}
.page-contact .tempo p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

/* ---------- 06 常见反馈 ---------- */
.page-contact .feedback-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.page-contact .feedback-item {
  display: flex;
  gap: 16px;
  padding: 20px;
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  background: var(--paper-alt);
}
.page-contact .feedback-num {
  flex: 0 0 auto;
  width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--r-sm);
  background: var(--c-deep);
  color: var(--c-lime);
  font-size: 14px;
}
.page-contact .feedback-item h3 {
  margin: 4px 0 8px;
  font-size: 16px;
  color: var(--ink);
}
.page-contact .feedback-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--ink-soft);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-contact .hero-facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }
  .page-contact .channel-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-contact .channel-card--mail {
    grid-column: 1 / -1;
  }
  .page-contact .feedback-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-contact .partner-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-contact .channel-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-contact .channel-card--mail {
    grid-column: auto;
  }

  .page-contact .tempo {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 24px;
    padding: 44px 0 0;
  }
  .page-contact .tempo::before {
    left: 0;
    right: 0;
    top: 8px;
    bottom: auto;
    width: auto;
    height: 2px;
    background: linear-gradient(90deg, var(--c-lime), var(--c-mint) 62%, var(--c-amber));
  }
  .page-contact .tempo li::before {
    left: 0;
    top: -44px;
  }
}

@media (min-width: 1080px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: 316px minmax(0, 1fr);
    gap: clamp(32px, 4vw, 56px);
    align-items: start;
  }
  .page-contact .shell {
    display: grid;
    grid-template-columns: var(--rail-w) minmax(0, 1fr);
    gap: var(--cc-shell-gap);
    align-items: start;
  }
  .page-contact .rail {
    display: block;
    position: sticky;
    top: calc(var(--header-h) + 28px);
    padding-top: clamp(38px, 6vw, 68px);
  }
  .page-contact .shell-content {
    min-width: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .column-chip,
  .page-contact .step,
  .page-contact .rail-link {
    transition: none;
  }
  .page-contact .column-chip:hover,
  .page-contact .step:hover {
    transform: none;
  }
}
<<<END>>>