.page-contact {
  --pc-pad: clamp(16px, 2.6vw, 26px);
  --pc-line: 1px solid var(--hairline);
}

/* ---------- 面包屑上下文 ---------- */
.page-contact .breadcrumbs {
  margin: clamp(14px, 2.2vw, 22px) 0 0;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: clamp(26px, 4.6vw, 52px) 0 clamp(30px, 5vw, 62px);
  border-bottom: var(--pc-line);
  background:
    radial-gradient(120% 140% at 88% 6%, var(--violet-a) 0%, transparent 56%),
    radial-gradient(110% 130% at 4% 94%, var(--cyan-a) 0%, transparent 58%);
}

.page-contact .contact-hero__inner {
  display: grid;
  gap: clamp(22px, 3.4vw, 40px);
  align-items: center;
}

.page-contact .contact-hero__copy {
  min-width: 0;
}

.page-contact .contact-hero h1 {
  margin: 14px 0 0;
  font-size: clamp(29px, 5.4vw, 52px);
  font-weight: 800;
  letter-spacing: -.022em;
  line-height: 1.13;
  color: var(--silver-050);
}

.page-contact .contact-hero .lede {
  margin: 18px 0 0;
  max-width: 54ch;
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 30px);
}

.page-contact .contact-hero__media {
  margin: 0;
  border: var(--pc-line);
  border-radius: var(--radius);
  overflow: hidden;
}

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

@media (min-width: 900px) {
  .page-contact .contact-hero__inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(30px, 4.4vw, 62px);
  }
}

/* ---------- 章节标题行 ---------- */
.page-contact .shead {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(22px, 3.4vw, 42px);
  padding-bottom: 18px;
  border-bottom: var(--pc-line);
}

.page-contact .shead h2 {
  margin: 10px 0 0;
  font-size: clamp(23px, 3.4vw, 34px);
  font-weight: 800;
  letter-spacing: -.016em;
  line-height: 1.2;
  color: var(--silver-050);
}

.page-contact .shead__r {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--silver-400);
}

@media (min-width: 860px) {
  .page-contact .shead {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: 24px;
  }
}

/* ---------- 4/8 与 8/4 分栏 ---------- */
.page-contact .pc-split {
  display: grid;
  gap: clamp(22px, 3.2vw, 42px);
  min-width: 0;
}

@media (min-width: 960px) {
  .page-contact .pc-split {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  }
  .page-contact .pc-split--rev {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
  }
}

/* ---------- 坐标索引卡片 ---------- */
.page-contact .cx-list {
  display: grid;
  gap: 16px;
  align-content: start;
  min-width: 0;
}

.page-contact .cx-card {
  position: relative;
  min-width: 0;
  padding: var(--pc-pad);
  background: var(--ink-800);
  border: var(--pc-line);
  border-radius: var(--radius);
  box-shadow: inset 0 1px 0 rgba(238, 242, 248, .03);
}

.page-contact .cx-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  bottom: 20px;
  width: 2px;
  background: var(--rail);
  opacity: .6;
  border-radius: 2px;
}

.page-contact .cx-code {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--silver-400);
}

.page-contact .cx-title {
  margin: 8px 0 0;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--silver-050);
}

.page-contact .cx-value {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(15px, 2.2vw, 19px);
  line-height: 1.4;
  color: var(--cyan);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .cx-value--addr {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.65;
  color: var(--silver-200);
}

.page-contact .cx-desc {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--silver-400);
}

.page-contact .cx-card .copy-btn {
  margin-top: 14px;
  padding: 8px 14px;
  font-size: 13px;
}

/* ---------- 右侧说明 ---------- */
.page-contact .cx-notes {
  min-width: 0;
  display: grid;
  gap: 20px;
  align-content: start;
}

.page-contact .cx-lead {
  margin: 0;
  font-size: clamp(17px, 2.2vw, 20px);
  line-height: 1.7;
  color: var(--silver-050);
  font-weight: 600;
}

.page-contact .cx-facts {
  margin: 0;
  display: grid;
  gap: 0;
  border-top: var(--pc-line);
}

.page-contact .cx-fact {
  display: grid;
  gap: 4px;
  padding: 16px 0;
  border-bottom: var(--pc-line);
}

@media (min-width: 640px) {
  .page-contact .cx-fact {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 6px 20px;
  }
}

.page-contact .cx-fact dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--silver-400);
  padding-top: 3px;
}

.page-contact .cx-fact dd {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--silver-200);
}

.page-contact .cx-foot {
  margin: 0;
  padding: 14px 16px;
  border: 1px dashed var(--hairline-soft);
  border-radius: 10px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.7;
  letter-spacing: .04em;
  color: var(--silver-400);
}

/* ---------- 分段控件 ---------- */
.page-contact .rt-tabs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 0 0 2px;
  margin: 0;
  scrollbar-width: none;
}

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

.page-contact .rt-tabs .tab {
  flex: 0 0 auto;
  padding: 10px 17px;
  border: var(--pc-line);
  border-radius: 999px;
  background: var(--ink-800);
  color: var(--silver-200);
  font-size: 14px;
  font-family: var(--font-sans);
  line-height: 1.2;
  cursor: pointer;
  transition: color .24s linear, background .24s linear, border-color .24s linear;
}

.page-contact .rt-tabs .tab:hover {
  border-color: var(--hairline-soft);
  color: var(--silver-050);
}

.page-contact .rt-tabs .tab[aria-selected="true"] {
  border-color: transparent;
  background: var(--rail);
  color: var(--ink-900);
  font-weight: 700;
}

.page-contact .rt-tabs .tab:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 分流面板 ---------- */
.page-contact .rt-panels {
  margin-top: clamp(18px, 2.4vw, 26px);
  display: grid;
  gap: 18px;
}

.page-contact .rt-panel {
  min-width: 0;
  padding: var(--pc-pad);
  background: var(--ink-800);
  border: var(--pc-line);
  border-radius: var(--radius);
}

.page-contact .rt-head {
  margin: 0 0 14px;
  padding-bottom: 12px;
  font-size: clamp(16px, 2.2vw, 19px);
  font-weight: 700;
  line-height: 1.45;
  color: var(--silver-050);
  border-bottom: 2px solid transparent;
  border-image: var(--rail) 1;
}

.page-contact .rt-row {
  display: grid;
  gap: 4px;
  padding: 13px 0;
  border-bottom: var(--pc-line);
}

.page-contact .rt-row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

@media (min-width: 700px) {
  .page-contact .rt-row {
    grid-template-columns: 128px minmax(0, 1fr);
    gap: 6px 22px;
    align-items: baseline;
  }
}

.page-contact .rt-k {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--silver-400);
}

.page-contact .rt-v {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--silver-200);
}

.page-contact .rt-v a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 230, 210, .4);
}

.page-contact .rt-v a:hover {
  color: var(--silver-050);
  border-bottom-color: var(--silver-050);
}

/* ---------- 沟通准备清单 ---------- */
.page-contact .check-grid {
  min-width: 0;
  display: grid;
  gap: 14px;
  align-content: start;
}

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

.page-contact .check-item {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 16px 18px;
  background: var(--ink-800);
  border: var(--pc-line);
  border-radius: 12px;
}

.page-contact .check-item__n {
  display: block;
  height: 24px;
  line-height: 22px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  color: var(--cyan);
  border: 1px solid rgba(47, 230, 210, .34);
  border-radius: 6px;
}

.page-contact .check-item__t {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--silver-400);
}

.page-contact .check-item__t strong {
  display: block;
  margin-bottom: 3px;
  font-size: 15px;
  font-weight: 700;
  color: var(--silver-050);
}

.page-contact .prep-media {
  margin: 0;
  border: var(--pc-line);
  border-radius: var(--radius);
  overflow: hidden;
}

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

.page-contact .prep-media .media-caption {
  display: block;
  padding: 12px 14px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--silver-400);
  border-top: var(--pc-line);
}

.page-contact .prep-note {
  margin: clamp(20px, 2.8vw, 30px) 0 0;
  padding: 15px 18px;
  border-left: 2px solid var(--violet);
  background: var(--ink-800);
  border-radius: 0 10px 10px 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--silver-400);
}

.page-contact .prep-note a {
  color: var(--silver-200);
  text-decoration: none;
  border-bottom: 1px solid var(--hairline-soft);
}

.page-contact .prep-note a:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* ---------- 回复节奏 ---------- */
.page-contact .pace-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--pc-line);
}

.page-contact .pace-list li {
  display: grid;
  gap: 4px;
  padding: 17px 0;
  border-bottom: var(--pc-line);
}

@media (min-width: 720px) {
  .page-contact .pace-list li {
    grid-template-columns: 176px minmax(0, 1fr);
    gap: 6px 26px;
    align-items: baseline;
  }
}

.page-contact .pace-list__k {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--cyan);
}

.page-contact .pace-list p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--silver-200);
}

.page-contact .pace-list a {
  color: var(--violet);
  text-decoration: none;
  border-bottom: 1px solid rgba(139, 92, 246, .45);
}

.page-contact .pace-list a:hover {
  color: var(--silver-050);
  border-bottom-color: var(--silver-050);
}

/* ---------- 打印与降低动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-contact .rt-tabs .tab,
  .page-contact .cx-card {
    transition: none;
  }
}
<<<END>>>