.page-contact {
  --pc-gap: clamp(1rem, 2.4vw, 1.75rem);
  --pc-pad: clamp(1.1rem, 2.4vw, 1.6rem);
  position: relative;
}

/* ---------- 通用小工具 ---------- */
.page-contact .mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.page-contact .visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.page-contact .lead-sm {
  color: var(--text);
  font-size: clamp(.95rem, 1.2vw, 1.02rem);
  line-height: 1.85;
  margin: 0 0 1.5rem;
  max-width: 62ch;
}

.page-contact .section-head {
  margin-bottom: clamp(1.25rem, 3vw, 2rem);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: calc(var(--header-h) + clamp(1.5rem, 5vw, 3.5rem)) 0 clamp(2rem, 5vw, 3.25rem);
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: -25% -15% auto -15%;
  height: 165%;
  background-image:
    linear-gradient(to right, rgba(42, 53, 96, .6) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(42, 53, 96, .6) 1px, transparent 1px);
  background-size: 88px 88px;
  opacity: .45;
  pointer-events: none;
  z-index: -2;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  right: -18%;
  bottom: -55%;
  width: min(58vw, 640px);
  height: min(58vw, 640px);
  background: radial-gradient(circle, rgba(34, 224, 214, .18) 0%, rgba(124, 92, 255, .09) 45%, transparent 72%);
  pointer-events: none;
  z-index: -1;
}

.page-contact .breadcrumb {
  margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
}

.page-contact .hero-grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.75rem);
}

.page-contact .hero-main .eyebrow {
  margin: 0 0 .85rem;
}

.page-contact .hero-main h1 {
  font-family: var(--font-display);
  font-size: var(--fs-display);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -.012em;
  color: var(--white);
  margin: 0 0 1.1rem;
  max-width: 18ch;
}

.page-contact .hero-lead {
  color: var(--text);
  font-size: clamp(1rem, 1.25vw, 1.06rem);
  line-height: 1.85;
  max-width: 52ch;
  margin: 0;
}

.page-contact .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-top: clamp(1.4rem, 3vw, 2rem);
}

.page-contact .hero-aside {
  align-self: end;
  position: relative;
  border: 1px solid var(--line);
  border-top: 2px solid var(--cyan);
  background: linear-gradient(158deg, rgba(20, 27, 58, .94), rgba(11, 16, 38, .72));
  padding: var(--pc-pad);
  box-shadow: var(--shadow-panel);
}

.page-contact .aside-label {
  margin: 0;
  font-size: .7rem;
  letter-spacing: .22em;
  color: var(--cyan);
}

.page-contact .aside-clock {
  display: flex;
  align-items: baseline;
  gap: .35rem;
  margin: .7rem 0 .2rem;
  font-size: clamp(1.8rem, 4.4vw, 2.55rem);
  font-weight: 600;
  line-height: 1;
  color: var(--white);
}

.page-contact .aside-dash {
  color: var(--cyan);
  font-weight: 400;
}

.page-contact .aside-sub {
  margin: 0 0 1.1rem;
  font-size: .82rem;
  letter-spacing: .06em;
  color: var(--muted);
}

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

.page-contact .aside-meta-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: .6rem 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .aside-meta-row dt {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .1em;
  color: var(--muted);
}

.page-contact .aside-meta-row dd {
  margin: 0;
  font-size: .88rem;
  color: var(--white);
  text-align: right;
}

/* ---------- 分栏骨架 ---------- */
.page-contact .split {
  display: grid;
  gap: clamp(1.25rem, 3vw, 2.5rem);
}

.page-contact .split-side .section-title {
  margin-top: .5rem;
}

.page-contact .split-side .section-note {
  margin-top: 1rem;
}

/* ---------- 01 值班范围 ---------- */
.page-contact .duty-cols {
  display: grid;
  gap: clamp(1.1rem, 3vw, 2rem);
}

.page-contact .duty-col {
  border-left: 1px solid var(--line);
  border-top: 1px solid transparent;
  padding-left: clamp(.9rem, 2vw, 1.25rem);
}

.page-contact .duty-col-title {
  display: flex;
  align-items: center;
  gap: .55rem;
  margin: 0 0 .85rem;
  font-size: .98rem;
  font-weight: 700;
  color: var(--white);
}

.page-contact .dot {
  width: 7px;
  height: 7px;
  flex: none;
  border-radius: 50%;
}

.page-contact .dot--cyan {
  background: var(--cyan);
  box-shadow: 0 0 0 4px var(--cyan-wash);
}

.page-contact .dot--violet {
  background: var(--violet);
  box-shadow: 0 0 0 4px var(--violet-wash);
}

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

.page-contact .duty-list li {
  position: relative;
  padding-left: 1.05rem;
  margin-bottom: .6rem;
  font-size: .93rem;
  line-height: 1.75;
  color: var(--text);
}

.page-contact .duty-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 8px;
  height: 1px;
  background: var(--line);
}

/* ---------- 02 联系渠道 ---------- */
.page-contact .channel-grid {
  display: grid;
  gap: var(--pc-gap);
}

.page-contact .channel-card {
  position: relative;
  min-width: 0;
  border: 1px solid var(--line);
  background: linear-gradient(168deg, rgba(20, 27, 58, .92), rgba(15, 21, 48, .78));
  padding: var(--pc-pad);
  box-shadow: var(--shadow-panel);
  transition: border-color 180ms var(--ease), transform 180ms var(--ease), box-shadow 180ms var(--ease);
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 42%;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), rgba(34, 224, 214, 0));
}

.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within {
  border-color: var(--cyan-line);
  transform: translateY(-2px);
  box-shadow: 0 1px 0 rgba(255, 255, 255, .04), 0 26px 52px -32px rgba(0, 0, 0, .96);
}

.page-contact .channel-tag {
  margin: 0 0 .7rem;
  font-size: .72rem;
  letter-spacing: .2em;
  color: var(--cyan);
}

.page-contact .channel-value {
  margin: 0;
  font-size: clamp(1rem, 1.9vw, 1.45rem);
  font-weight: 600;
  line-height: 1.35;
  color: var(--white);
  overflow-wrap: anywhere;
}

.page-contact .channel-value--sm {
  font-family: var(--font-body);
  font-size: clamp(.98rem, 1.3vw, 1.08rem);
  font-weight: 500;
  line-height: 1.6;
}

.page-contact .channel-desc {
  margin: .85rem 0 0;
  font-size: .92rem;
  line-height: 1.8;
  color: var(--text);
}

.page-contact .channel-meta {
  margin: 1rem 0 0;
  padding-top: .8rem;
  border-top: 1px dashed var(--line);
  font-size: .78rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .channel-figure {
  margin: clamp(1.5rem, 3.5vw, 2.5rem) 0 0;
}

.page-contact .media {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--panel-2);
}

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

.page-contact .channel-figure .media-cap,
.page-contact .media-cap {
  display: block;
  margin-top: .65rem;
  font-size: .78rem;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 03 咨询准备 ---------- */
.page-contact .prep-grid {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .prep-item {
  background: var(--ink);
  padding: var(--pc-pad);
  transition: background 180ms var(--ease);
}

.page-contact .prep-item:hover {
  background: var(--panel-2);
}

.page-contact .prep-num {
  margin: 0 0 .55rem;
  font-size: .74rem;
  letter-spacing: .18em;
  color: var(--cyan);
}

.page-contact .prep-title {
  margin: 0 0 .5rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
}

.page-contact .prep-item p:last-child {
  margin: 0;
  font-size: .92rem;
  line-height: 1.78;
  color: var(--text);
}

/* ---------- 04 求助路径 ---------- */
.page-contact .steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .step {
  position: relative;
  display: grid;
  grid-template-columns: 2.75rem minmax(0, 1fr);
  column-gap: clamp(.8rem, 2vw, 1.25rem);
  padding-bottom: clamp(1.35rem, 3vw, 2rem);
}

.page-contact .step::before {
  content: "";
  position: absolute;
  left: calc(1.375rem - .5px);
  top: 2.9rem;
  bottom: .4rem;
  width: 1px;
  background: linear-gradient(to bottom, var(--cyan-line), rgba(42, 53, 96, .18));
}

.page-contact .step:last-child {
  padding-bottom: 0;
}

.page-contact .step:last-child::before {
  content: none;
}

.page-contact .step-num {
  display: grid;
  place-items: center;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--cyan-line);
  background: var(--cyan-wash);
  color: var(--cyan);
  font-size: .88rem;
  border-radius: var(--radius);
}

.page-contact .step-body {
  padding-top: .35rem;
}

.page-contact .step-title {
  margin: 0 0 .5rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
}

.page-contact .step-body p {
  margin: 0 0 .7rem;
  font-size: .94rem;
  line-height: 1.82;
  color: var(--text);
}

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

.page-contact .step-links {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 1.4rem;
}

/* ---------- 05 商务合作 ---------- */
.page-contact .coop-lead {
  max-width: 66ch;
  margin: 0 0 clamp(1.25rem, 3vw, 1.85rem);
  font-size: clamp(.95rem, 1.2vw, 1.02rem);
  line-height: 1.85;
  color: var(--text);
}

.page-contact .coop-lead .mono {
  color: var(--white);
}

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

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

.page-contact .accordion-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 1.05rem .25rem;
  color: var(--white);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  text-align: left;
  transition: color 160ms var(--ease), padding-left 160ms var(--ease);
}

.page-contact .accordion-toggle:hover {
  color: var(--cyan);
  padding-left: .7rem;
}

.page-contact .acc-mark {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
}

.page-contact .acc-mark::before,
.page-contact .acc-mark::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform 220ms var(--ease), opacity 220ms var(--ease);
}

.page-contact .acc-mark::before {
  top: 6px;
  left: 0;
  width: 14px;
  height: 1px;
}

.page-contact .acc-mark::after {
  top: 0;
  left: 6px;
  width: 1px;
  height: 14px;
}

.page-contact .accordion-toggle[aria-expanded="true"] .acc-mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-contact .accordion-panel {
  padding: 0 .25rem 1.3rem;
  font-size: .93rem;
  line-height: 1.85;
  color: var(--text);
}

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

.page-contact .accordion-panel p {
  margin: 0;
  max-width: 70ch;
}

.page-contact .accordion-all {
  margin-top: 1.1rem;
  padding: .6rem 1.1rem;
  background: none;
  border: 1px solid var(--line);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .12em;
  cursor: pointer;
  transition: border-color 160ms var(--ease), color 160ms var(--ease);
}

.page-contact .accordion-all:hover {
  border-color: var(--cyan-line);
  color: var(--cyan);
}

/* ---------- 06 站点核对 ---------- */
.page-contact .info-split {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
}

.page-contact .info-body .eyebrow {
  margin: 0 0 .6rem;
}

.page-contact .info-body > p {
  margin: 1rem 0 0;
  font-size: .95rem;
  line-height: 1.85;
  color: var(--text);
  max-width: 58ch;
}

.page-contact .info-list {
  margin: clamp(1.25rem, 3vw, 1.75rem) 0 0;
  border-top: 1px solid var(--line);
}

.page-contact .info-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: .25rem;
  padding: .8rem 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .info-row dt {
  font-family: var(--font-mono);
  font-size: .73rem;
  letter-spacing: .14em;
  color: var(--muted);
}

.page-contact .info-row dd {
  margin: 0;
  font-size: .95rem;
  color: var(--white);
  overflow-wrap: anywhere;
}

.page-contact .info-foot {
  margin: 1.25rem 0 0;
  font-size: .82rem;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 收束带 ---------- */
.page-contact .closing-band {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  background: linear-gradient(100deg, rgba(34, 224, 214, .09), rgba(124, 92, 255, .06) 58%, transparent);
  padding: clamp(1.1rem, 3vw, 1.6rem) clamp(1.1rem, 3vw, 2rem);
}

.page-contact .closing-line {
  margin: 0;
  font-size: clamp(.95rem, 1.2vw, 1.02rem);
  line-height: 1.8;
  color: var(--white);
  max-width: 62ch;
}

.page-contact .closing-line .mono {
  color: var(--cyan);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-contact .prep-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .info-row {
    grid-template-columns: 7.5rem minmax(0, 1fr);
    align-items: baseline;
    gap: 1.25rem;
  }
}

@media (min-width: 760px) {
  .page-contact .duty-cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
  }

  .page-contact .split {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  }

  .page-contact .split-side {
    position: sticky;
    top: calc(var(--header-h) + 2rem);
    align-self: start;
  }

  .page-contact .info-split {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: center;
  }
}

@media (min-width: 1000px) {
  .page-contact .prep-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .channel-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    align-items: start;
  }

  .page-contact .channel-card--mail {
    grid-column: span 5;
  }

  .page-contact .channel-card--phone {
    grid-column: span 4;
    margin-top: 2.25rem;
  }

  .page-contact .channel-card--place {
    grid-column: span 3;
    margin-top: 4.25rem;
  }
}

@media (max-width: 999px) {
  .page-contact .channel-card--mail {
    border-top-width: 2px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact *,
  .page-contact *::before,
  .page-contact *::after {
    transition: none !important;
    animation: none !important;
  }

  .page-contact .channel-card:hover,
  .page-contact .channel-card:focus-within {
    transform: none;
  }
}
<<<END>>>