.page-contact {
  --contact-sticky-top: calc(var(--header-h) + 24px);
}

/* ---------- 上下文条 ---------- */
.page-contact .contact-context {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 24px;
  padding-block: 40px 14px;
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-context__nav {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--c-muted);
}

.page-contact .contact-context__link {
  color: var(--c-muted);
  text-decoration: none;
  transition: color var(--dur) ease;
}

.page-contact .contact-context__link:hover,
.page-contact .contact-context__link:focus-visible {
  color: var(--c-cyan);
}

.page-contact .contact-context__sep {
  color: var(--c-line);
}

.page-contact .contact-context__current {
  color: var(--c-ink);
}

.page-contact .contact-context__note {
  margin: 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--c-muted);
}

.page-contact .contact-context__note a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--accent-soft);
}

.page-contact .contact-context__note a:hover,
.page-contact .contact-context__note a:focus-visible {
  border-bottom-color: var(--c-cyan);
}

/* ---------- 主体两栏骨架 ---------- */
.page-contact .contact-shell {
  display: grid;
  gap: 40px;
}

@media (min-width: 1024px) {
  .page-contact .contact-shell {
    grid-template-columns: minmax(0, 330px) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }
}

/* ---------- 联系信息卡 ---------- */
.page-contact .contact-card {
  position: relative;
  border: 1px solid var(--line);
  background: var(--c-panel);
}

@media (min-width: 1024px) {
  .page-contact .contact-card {
    position: sticky;
    top: var(--contact-sticky-top);
  }
}

.page-contact .contact-card__media {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background: var(--c-void);
}

.page-contact .contact-card__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(0.45) brightness(0.62) contrast(1.1);
}

.page-contact .contact-card__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(5, 7, 10, 0.15) 0%, rgba(5, 7, 10, 0.92) 100%),
    linear-gradient(90deg, rgba(0, 232, 206, 0.16) 0%, rgba(0, 232, 206, 0) 62%);
  pointer-events: none;
}

.page-contact .contact-card__body {
  padding: 22px 20px 24px;
}

.page-contact .contact-card__label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--c-cyan);
}

.page-contact .contact-card__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: 0.01em;
  color: var(--c-white);
}

.page-contact .contact-card__lede {
  margin: 0 0 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-muted);
}

.page-contact .contact-facts {
  margin: 0;
  border-top: 1px solid var(--line);
}

.page-contact .contact-fact {
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-fact__key {
  margin: 0 0 3px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--c-muted);
}

.page-contact .contact-fact__val {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--c-ink);
  word-break: break-word;
}

.page-contact .contact-fact__val--mail {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: -0.015em;
  color: var(--c-cyan);
}

.page-contact .contact-card__mark {
  margin: 18px 0 0;
}

/* ---------- 右侧主栏 ---------- */
.page-contact .contact-title {
  margin: 12px 0 20px;
  font-family: var(--font-display);
  font-size: clamp(36px, 7.4vw, 76px);
  font-weight: 300;
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--c-white);
}

.page-contact .contact-lead {
  max-width: 60ch;
  margin: 0;
  font-size: 16.5px;
  line-height: 1.8;
  color: var(--c-ink);
}

.page-contact .contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-contact .contact-block {
  margin-top: 56px;
}

.page-contact .contact-block__head {
  display: grid;
  gap: 8px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-block__head .section-head__title {
  margin: 0;
}

.page-contact .contact-block__head .note {
  margin: 0;
}

/* ---------- 编号手风琴 ---------- */
.page-contact .contact-accordion {
  border-top: 1px solid transparent;
}

.page-contact .contact-accordion .accordion__item {
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-acc__trigger {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr) 18px;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 17px 2px;
  background: none;
  border: 0;
  text-align: left;
  font-family: var(--font-body);
  font-size: 15.5px;
  color: var(--c-ink);
  cursor: pointer;
  transition: color var(--dur) ease, background-color var(--dur) ease;
}

.page-contact .contact-acc__trigger:hover,
.page-contact .contact-acc__trigger:focus-visible {
  color: var(--c-cyan);
  background: rgba(0, 232, 206, 0.04);
  outline: none;
}

.page-contact .contact-acc__num {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-cyan-dim);
}

.page-contact .contact-acc__trigger:hover .contact-acc__num,
.page-contact .contact-acc__trigger:focus-visible .contact-acc__num {
  color: var(--c-cyan);
}

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

.page-contact .contact-acc__panel {
  padding: 0 2px 20px 52px;
}

.page-contact .contact-acc__panel p {
  margin: 0 0 10px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--c-muted);
}

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

.page-contact .contact-acc__sample {
  padding-left: 12px;
  border-left: 1px solid var(--c-cyan-dim);
  color: var(--c-ink) !important;
  font-size: 13.5px !important;
}

.page-contact .contact-acc__panel a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--accent-soft);
}

/* ---------- 响应节奏带 ---------- */
.page-contact .contact-rhythm {
  margin-top: 24px;
  border-top: 1px solid var(--line);
}

.page-contact .contact-rhythm .section-head__title {
  margin: 8px 0 0;
}

.page-contact .contact-rhythm__band {
  position: relative;
  margin-top: 32px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--c-panel);
  overflow: hidden;
}

.page-contact .contact-rhythm__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.24;
  filter: grayscale(1) brightness(0.85);
  pointer-events: none;
}

.page-contact .contact-steps {
  position: relative;
  z-index: 1;
  list-style: none;
  margin: 0;
  padding-block: 40px 44px;
  display: grid;
  gap: 26px;
}

.page-contact .contact-step {
  position: relative;
  padding-left: 20px;
  border-left: 1px solid var(--c-cyan-dim);
}

.page-contact .contact-step__tick {
  position: absolute;
  left: -1px;
  top: 0;
  width: 1px;
  height: 30px;
  background: var(--c-cyan);
  box-shadow: 0 0 12px var(--accent-glow);
}

.page-contact .contact-step__time {
  margin: 0 0 6px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--c-cyan);
}

.page-contact .contact-step__title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 500;
  line-height: 1.45;
  color: var(--c-white);
}

.page-contact .contact-step__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-ink);
}

.page-contact .contact-step__more {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-muted);
  transition: opacity 0.25s ease, max-height 0.25s ease;
  max-height: 140px;
  overflow: hidden;
  opacity: 1;
}

@media (hover: hover) and (min-width: 900px) {
  .page-contact .contact-step__more {
    max-height: 0;
    opacity: 0;
  }

  .page-contact .contact-step:hover .contact-step__more,
  .page-contact .contact-step:focus-within .contact-step__more {
    max-height: 140px;
    opacity: 1;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 24px;
    padding-block: 58px 62px;
  }

  .page-contact .contact-step {
    padding-left: 0;
    padding-top: 22px;
    border-left: 0;
    border-top: 1px solid var(--c-cyan-dim);
  }

  .page-contact .contact-step__tick {
    left: 0;
    top: -1px;
    width: 34px;
    height: 1px;
  }
}

/* ---------- 双栏内容段 ---------- */
.page-contact .contact-split {
  display: grid;
  gap: 32px;
}

@media (min-width: 940px) {
  .page-contact .contact-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 320px);
    gap: 48px;
    align-items: start;
  }
}

.page-contact .contact-split .section-head__title {
  margin: 8px 0 16px;
}

.page-contact .contact-split .prose {
  max-width: 62ch;
}

.page-contact .contact-split__aside {
  align-self: start;
}

.page-contact .contact-split--flip {
  margin-top: 72px;
}

.page-contact .contact-correct {
  margin-top: 24px;
  border-top: 1px solid var(--line);
}

.page-contact .contact-coop {
  margin-top: 24px;
  border-top: 1px solid var(--line);
}

/* 编号步骤列表 */
.page-contact .contact-ordered {
  list-style: none;
  counter-reset: cstep;
  margin: 28px 0 0;
  padding: 0;
}

.page-contact .contact-ordered__item {
  position: relative;
  counter-increment: cstep;
  padding: 0 0 22px 42px;
  border-left: 1px solid var(--line);
  margin-left: 12px;
}

.page-contact .contact-ordered__item:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-contact .contact-ordered__item::before {
  content: counter(cstep, decimal-leading-zero);
  position: absolute;
  left: -13px;
  top: 0;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--c-cyan);
  background: var(--c-void);
  border: 1px solid var(--c-cyan-dim);
}

.page-contact .contact-ordered__title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 500;
  color: var(--c-white);
}

.page-contact .contact-ordered__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--c-muted);
}

/* 复核清单面板 */
.page-contact .contact-check {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .contact-check__item {
  padding: 11px 0 11px 16px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.65;
  color: var(--c-ink);
  position: relative;
}

.page-contact .contact-check__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 19px;
  width: 6px;
  height: 1px;
  background: var(--c-cyan);
}

/* 合作卡片矩阵 */
.page-contact .contact-coop__grid {
  display: grid;
  gap: 1px;
  margin-top: 28px;
  background: var(--line);
  border: 1px solid var(--line);
}

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

.page-contact .contact-coop__card {
  background: var(--c-panel);
  padding: 20px 18px 22px;
  transition: background-color var(--dur) ease, box-shadow var(--dur) ease;
}

.page-contact .contact-coop__card:hover {
  background: var(--c-raise);
  box-shadow: inset 0 0 0 1px rgba(0, 232, 206, 0.28);
}

.page-contact .contact-coop__tag {
  margin: 0 0 8px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--c-cyan-dim);
}

.page-contact .contact-coop__title {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 500;
  color: var(--c-white);
}

.page-contact .contact-coop__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--c-muted);
}

/* 合作侧栏 */
.page-contact .contact-aside {
  padding: 22px 20px 24px;
  border: 1px solid var(--line);
  border-top: 2px solid var(--c-amber);
  background: var(--c-panel);
}

.page-contact .contact-aside__label {
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--c-amber);
}

.page-contact .contact-aside__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .contact-aside__list li {
  position: relative;
  padding: 9px 0 9px 18px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-ink);
}

.page-contact .contact-aside__list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--c-cyan-dim);
}

.page-contact .contact-aside__foot {
  margin: 16px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--c-muted);
}

/* ---------- 站点信息 ---------- */
.page-contact .contact-meta {
  margin-top: 24px;
  border-top: 1px solid var(--line);
}

.page-contact .contact-meta .section-head__title {
  margin: 8px 0 28px;
}

.page-contact .contact-meta__list {
  margin: 0;
  border-top: 1px solid var(--line);
}

.page-contact .contact-meta__row {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

@media (min-width: 720px) {
  .page-contact .contact-meta__row {
    grid-template-columns: 200px minmax(0, 1fr);
    align-items: baseline;
    gap: 24px;
  }
}

.page-contact .contact-meta__key {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--c-muted);
}

.page-contact .contact-meta__val {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--c-ink);
  word-break: break-word;
}

.page-contact .contact-meta__val--mono {
  font-family: var(--font-mono);
  font-size: 13.5px;
  letter-spacing: -0.01em;
}

.page-contact .contact-meta__accordion {
  margin-top: 24px;
  border-top: 1px solid var(--line);
}

.page-contact .contact-meta__accordion .accordion__item {
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-meta__legal {
  margin: 32px 0 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--c-muted);
}

/* ---------- 窄屏收口 ---------- */
@media (max-width: 640px) {
  .page-contact .contact-context {
    padding-block: 30px 12px;
  }

  .page-contact .contact-acc__trigger {
    grid-template-columns: 30px minmax(0, 1fr) 16px;
    gap: 8px;
    font-size: 15px;
  }

  .page-contact .contact-acc__panel {
    padding-left: 38px;
  }

  .page-contact .contact-ordered__item {
    padding-left: 36px;
  }

  .page-contact .contact-meta__val--mono,
  .page-contact .contact-fact__val--mail {
    font-size: 12.5px;
  }
}
<<<END>>>