.page-contact {
  --contact-rail-bg: var(--teal-800);
  --contact-gap: clamp(1.5rem, 4vw, 3rem);
  background: var(--paper-050);
  color: var(--text);
}

/* ── 首屏 ───────────────────────────────────────── */
.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding-block: clamp(1.75rem, 5vw, 3rem) clamp(2.5rem, 7vw, 4.5rem);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  right: -18%;
  bottom: -58%;
  width: min(620px, 78vw);
  aspect-ratio: 1 / 1;
  background: linear-gradient(135deg, var(--tech-blue-500), var(--indigo-700) 48%, var(--teal-800));
  border-radius: 38% 62% 55% 45% / 52% 40% 60% 48%;
  transform: rotate(18deg);
  opacity: 0.55;
  pointer-events: none;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--orange-500), var(--tech-blue-500) 62%, transparent);
}

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

.page-contact .contact-hero .lb-breadcrumb,
.page-contact .contact-hero .lb-breadcrumb a {
  color: rgba(255, 255, 255, 0.72);
}

.page-contact .contact-hero .lb-eyebrow {
  color: var(--mint-200);
}

.page-contact .contact-hero__title {
  max-width: 18ch;
  margin: 0.75rem 0 0;
}

.page-contact .contact-hero__lede {
  max-width: 58ch;
  margin: clamp(1rem, 2.5vw, 1.5rem) 0 0;
  font-size: clamp(1rem, 1.6vw, 1.125rem);
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.82);
}

.page-contact .contact-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.5rem;
  margin: clamp(1.5rem, 4vw, 2.25rem) 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .contact-jump a {
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.35rem 0;
  font-size: var(--fs-meta);
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.3);
  transition: color 160ms var(--ease-out), border-color 160ms var(--ease-out);
}

.page-contact .contact-jump a:hover,
.page-contact .contact-jump a:focus-visible {
  color: var(--orange-500);
  border-bottom-color: var(--orange-500);
}

/* ── 主体两栏 ───────────────────────────────────── */
.page-contact .contact-main {
  padding-block: clamp(2.5rem, 6vw, 5rem);
}

.page-contact .contact-layout {
  display: grid;
  gap: var(--contact-gap);
  align-items: start;
}

/* 左侧渠道栏 */
.page-contact .contact-rail {
  display: grid;
  gap: 1.25rem;
  padding: clamp(1.4rem, 3.5vw, 2rem);
  border-radius: var(--radius-m);
  background: var(--contact-rail-bg);
  color: #fff;
}

.page-contact .contact-rail__code {
  display: block;
  font-size: var(--fs-meta);
  letter-spacing: 0.22em;
  color: var(--mint-200);
}

.page-contact .contact-rail__title {
  margin: 0.35rem 0 0;
  font-size: var(--fs-h3);
  font-weight: 900;
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.page-contact .contact-channel {
  display: grid;
  gap: 0.3rem;
  padding-top: 1.15rem;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.page-contact .contact-channel__title {
  margin: 0;
  font-size: var(--fs-meta);
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--mint-200);
  transition: color 160ms var(--ease-out);
}

.page-contact .contact-channel:hover .contact-channel__title,
.page-contact .contact-channel:focus-within .contact-channel__title {
  color: var(--orange-500);
}

.page-contact .contact-channel__value {
  margin: 0.3rem 0 0;
  font-family: var(--font-mono);
  font-size: 1.0625rem;
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: 0.01em;
  overflow-wrap: anywhere;
}

.page-contact .contact-channel__value--addr {
  font-size: 0.9375rem;
  font-weight: 500;
  line-height: 1.7;
}

.page-contact .contact-channel__desc {
  margin: 0.15rem 0 0;
  font-size: 0.875rem;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.7);
}

.page-contact .contact-rail__note {
  margin: 0;
  padding: 0.8rem 1rem;
  border-left: 3px solid var(--orange-500);
  border-radius: 0 var(--radius-s) var(--radius-s) 0;
  background: rgba(255, 255, 255, 0.08);
  font-size: 0.875rem;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.88);
}

/* ── 右侧流程内容 ───────────────────────────────── */
.page-contact .contact-flow {
  display: grid;
  gap: clamp(2.5rem, 6vw, 4rem);
  min-width: 0;
}

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

.page-contact .contact-block__head {
  display: flex;
  align-items: baseline;
  gap: 0.9rem;
  padding-bottom: 0.85rem;
  margin-bottom: 1.25rem;
  border-bottom: 2px solid var(--line);
}

.page-contact .contact-block__no {
  font-size: var(--fs-meta);
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--wine-700);
}

.page-contact .contact-block__title {
  margin: 0;
  font-size: var(--fs-h2);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.02em;
}

.page-contact .contact-block__lede {
  max-width: 62ch;
  margin: 0 0 1.5rem;
  font-size: var(--fs-body);
  line-height: 1.75;
  color: var(--text-muted);
}

.page-contact .contact-reply__text .contact-block__lede {
  color: var(--text);
}

/* 准备清单 */
.page-contact .contact-lists {
  display: grid;
  gap: 1.1rem;
}

.page-contact .contact-list {
  padding: 1.2rem 1.2rem 1.35rem;
  border-radius: var(--radius-m);
  background: var(--surface);
  border-top: 3px solid var(--tech-blue-500);
}

.page-contact .contact-list:nth-child(2) {
  border-top-color: var(--wine-700);
}

.page-contact .contact-list:nth-child(3) {
  border-top-color: var(--orange-500);
}

.page-contact .contact-list__title {
  margin: 0 0 0.85rem;
  font-size: 1.0625rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-contact .contact-list ul {
  display: grid;
  gap: 0.6rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .contact-list li {
  position: relative;
  padding-left: 1.7rem;
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--text-muted);
  transition: color 160ms var(--ease-out);
}

.page-contact .contact-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.28em;
  width: 0.95rem;
  height: 0.95rem;
  border: 2px solid var(--gray-300);
  border-radius: 3px;
  transition: background-color 160ms var(--ease-out), border-color 160ms var(--ease-out);
}

.page-contact .contact-list li::after {
  content: "";
  position: absolute;
  left: 0.3rem;
  top: 0.46em;
  width: 0.28rem;
  height: 0.55rem;
  border: 2px solid #fff;
  border-top: 0;
  border-left: 0;
  transform: rotate(45deg) scale(0);
  transform-origin: center;
  transition: transform 160ms var(--ease-out);
}

.page-contact .contact-list li:hover {
  color: var(--text);
}

.page-contact .contact-list li:hover::before {
  background: var(--orange-500);
  border-color: var(--orange-500);
}

.page-contact .contact-list li:hover::after {
  transform: rotate(45deg) scale(1);
}

/* 渠道走向 */
.page-contact .contact-map__figure {
  margin: 0 0 1.75rem;
  border-radius: var(--radius-m);
  overflow: hidden;
}

.page-contact .contact-map__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

.page-contact .contact-route {
  display: grid;
  gap: 1.25rem;
}

.page-contact .contact-route__item {
  padding-top: 0.9rem;
  border-top: 2px solid var(--line);
}

.page-contact .contact-route__item h3 {
  margin: 0 0 0.5rem;
  font-size: 1.0625rem;
  font-weight: 800;
  line-height: 1.4;
}

.page-contact .contact-route__item p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--text-muted);
}

/* 回复节奏 */
.page-contact .contact-reply {
  display: grid;
  gap: 1.75rem;
}

.page-contact .contact-reply__text p {
  max-width: 62ch;
  margin: 0 0 1rem;
  line-height: 1.75;
  color: var(--text-muted);
}

.page-contact .contact-reply__text p:last-child {
  margin-bottom: 0;
}

.page-contact .contact-reply__figure {
  margin: 0;
  border-radius: var(--radius-m);
  overflow: hidden;
  background: var(--sand-200);
}

.page-contact .contact-reply__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-contact .contact-scale {
  display: grid;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.page-contact .contact-scale__cell {
  padding: 1rem 1.1rem 1.15rem;
  border-radius: var(--radius-s);
  background: var(--sand-200);
  border-top: 4px solid var(--gray-300);
}

.page-contact .contact-scale__cell--end {
  background: var(--mint-200);
  border-top-color: var(--orange-500);
}

.page-contact .contact-scale__mark {
  display: block;
  font-size: var(--fs-meta);
  letter-spacing: 0.16em;
  color: var(--wine-700);
}

.page-contact .contact-scale__cell--end .contact-scale__mark {
  color: var(--teal-800);
}

.page-contact .contact-scale__cell strong {
  display: block;
  margin: 0.35rem 0 0.4rem;
  font-size: 1.0625rem;
  font-weight: 800;
  line-height: 1.35;
}

.page-contact .contact-scale__cell p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--text-muted);
}

/* 到访与协作 */
.page-contact .contact-block--visit {
  padding: clamp(1.5rem, 4vw, 2.5rem);
  border-radius: var(--radius-m);
  background: var(--teal-800);
  color: #fff;
}

.page-contact .contact-block--visit .contact-block__head {
  border-bottom-color: rgba(255, 255, 255, 0.25);
}

.page-contact .contact-block--visit .contact-block__no {
  color: var(--orange-500);
}

.page-contact .contact-block--visit .contact-block__title {
  color: #fff;
}

.page-contact .contact-visit {
  display: grid;
  gap: 1.75rem;
}

.page-contact .contact-visit__text p {
  max-width: 56ch;
  margin: 0 0 1rem;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.82);
}

.page-contact .contact-visit__text p:first-child {
  color: #fff;
  font-size: 1.0625rem;
}

.page-contact .contact-visit__text p:last-child {
  margin-bottom: 0;
}

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

.page-contact .contact-sketch {
  display: block;
  width: 100%;
  height: auto;
}

.page-contact .contact-sketch__name {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 700;
  fill: #ffffff;
}

.page-contact .contact-sketch__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  fill: rgba(255, 255, 255, 0.68);
}

/* 常见情形 */
.page-contact .contact-scenes {
  display: grid;
  gap: 1.5rem;
}

.page-contact .contact-scene {
  padding-top: 1rem;
  border-top: 2px solid var(--line);
}

.page-contact .contact-scene__no {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  border-radius: var(--radius-pill);
  background: var(--wine-700);
  color: #fff;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
}

.page-contact .contact-scene h3 {
  margin: 0.75rem 0 0.5rem;
  font-size: 1.0625rem;
  font-weight: 800;
  line-height: 1.4;
}

.page-contact .contact-scene p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--text-muted);
}

/* 相关页面 */
.page-contact .contact-more {
  padding-top: clamp(1.5rem, 4vw, 2.25rem);
  border-top: 2px solid var(--line);
}

.page-contact .contact-more__title {
  margin: 0 0 1rem;
  font-size: var(--fs-h3);
  font-weight: 800;
  line-height: 1.3;
}

.page-contact .contact-more__list {
  display: grid;
  gap: 0.3rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .contact-more__list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.6rem;
  padding: 0.8rem 0.9rem;
  border-radius: var(--radius-s);
  transition: background-color 160ms var(--ease-out);
}

.page-contact .contact-more__list li:hover {
  background: var(--surface);
}

.page-contact .contact-more__list a {
  font-weight: 700;
  color: var(--tech-blue-500);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 160ms var(--ease-out);
}

.page-contact .contact-more__list a:hover,
.page-contact .contact-more__list a:focus-visible {
  border-bottom-color: var(--tech-blue-500);
}

.page-contact .contact-more__list span {
  font-size: var(--fs-meta);
  color: var(--text-muted);
}

/* ── 断点 ───────────────────────────────────────── */
@media (min-width: 560px) {
  .page-contact .contact-scale {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 720px) {
  .page-contact .contact-lists {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .contact-route {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .contact-scenes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .contact-more__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.5rem 1.5rem;
  }
}

@media (min-width: 800px) {
  .page-contact .contact-visit {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.95fr);
    align-items: center;
  }
}

@media (min-width: 880px) {
  .page-contact .contact-reply {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-contact .contact-layout {
    grid-template-columns: minmax(0, 21rem) minmax(0, 1fr);
  }

  .page-contact .contact-rail {
    position: sticky;
    top: 5.5rem;
  }
}

@media (max-width: 479px) {
  .page-contact .contact-hero__title {
    max-width: 100%;
  }

  .page-contact .contact-channel__value {
    font-size: 1rem;
  }

  .page-contact .contact-block__head {
    flex-wrap: wrap;
    gap: 0.4rem 0.9rem;
  }
}
<<<END>>>