.page-contact {
  --desk-pad: clamp(1.15rem, 2.4vw, 1.6rem);
  --desk-gap: clamp(1.75rem, 4vw, 3rem);
  --desk-section-y: clamp(2rem, 4.5vw, 3.2rem);
  display: block;
  font-family: var(--sans);
  color: var(--warm);
}

.page-contact .desk-inner {
  padding-block: clamp(1.4rem, 3.5vw, 2.4rem) clamp(3rem, 8vw, 6rem);
}

/* ---------- 首屏 ---------- */
.page-contact .desk-intro {
  position: relative;
  z-index: 0;
  max-width: 62ch;
  margin-bottom: clamp(2rem, 5vw, 3.4rem);
}

.page-contact .desk-intro::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: -3rem -2rem -1rem -3rem;
  background: radial-gradient(58% 96% at 8% 0%, rgba(47, 227, 208, .11), transparent 68%);
  pointer-events: none;
}

.page-contact .desk-intro .eyebrow {
  margin-bottom: .9rem;
}

.page-contact .desk-intro h1 {
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(2.2rem, 6vw, 3.75rem);
  line-height: 1.1;
  letter-spacing: -0.025em;
  color: var(--warm);
  margin: 0 0 1.15rem;
}

.page-contact .desk-intro__lede {
  font-size: clamp(1rem, 1.6vw, 1.08rem);
  line-height: 1.85;
  color: var(--mist);
  margin: 0 0 1.4rem;
}

.page-contact .desk-intro__meta {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-family: var(--mono);
  font-size: .82rem;
  letter-spacing: .01em;
  color: var(--cyan);
  margin: 0;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

/* ---------- 主体分栏 ---------- */
.page-contact .desk-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--desk-gap);
  align-items: start;
}

.page-contact .desk-main {
  min-width: 0;
}

@media (min-width: 1024px) {
  .page-contact .desk-grid {
    grid-template-columns: minmax(280px, 320px) minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 3.4rem);
  }

  .page-contact .desk-aside {
    position: sticky;
    top: calc(var(--topbar-h) + 2rem);
  }
}

/* ---------- 联系卡片 ---------- */
.page-contact .contact-card {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(168deg, rgba(16, 31, 56, .95), rgba(10, 20, 38, .98) 72%);
  box-shadow: var(--shadow-cell);
  padding: var(--desk-pad);
  overflow: hidden;
}

.page-contact .contact-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan), rgba(47, 227, 208, .05));
}

.page-contact .contact-card__eyebrow {
  font-size: .7rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--mist);
  margin: 0 0 .55rem;
}

.page-contact .contact-card__title {
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(1.25rem, 2.4vw, 1.5rem);
  letter-spacing: -0.015em;
  color: var(--warm);
  margin: 0 0 1.35rem;
}

.page-contact .contact-list {
  margin: 0;
  padding: 0;
}

.page-contact .contact-list__row {
  padding-block: .95rem;
  border-top: 1px solid var(--line);
}

.page-contact .contact-list__label {
  font-size: .72rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mist);
  margin-bottom: .4rem;
}

.page-contact .contact-list__value {
  margin: 0;
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  font-size: clamp(.95rem, 2.4vw, 1.08rem);
  line-height: 1.55;
  letter-spacing: -0.008em;
  word-break: break-word;
  user-select: all;
  -webkit-user-select: all;
}

.page-contact .contact-list__value--link a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 227, 208, .35);
  padding-bottom: 1px;
  transition: border-color .2s var(--ease), color .2s var(--ease);
}

.page-contact .contact-list__value--link a:hover {
  border-color: var(--cyan);
}

.page-contact .contact-list__value--plain {
  color: var(--warm);
  font-size: clamp(.86rem, 2.2vw, .95rem);
  font-weight: 500;
}

.page-contact .contact-list__value--time {
  color: var(--score);
}

.page-contact .contact-card__note {
  margin: 1.35rem 0 0;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line);
  font-size: .84rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .contact-card__hint {
  margin: .75rem 0 0;
  font-size: .74rem;
  letter-spacing: .02em;
  color: rgba(168, 182, 200, .72);
}

/* ---------- 目录 ---------- */
.page-contact .toc {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  margin: 0 0 clamp(1.4rem, 3vw, 2rem);
  padding-bottom: 1.1rem;
  border-bottom: 1px solid var(--line);
  position: static;
}

.page-contact .toc__link {
  display: inline-block;
  font-size: .8rem;
  padding: .34rem .72rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--mist);
  text-decoration: none;
  transition: color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-contact .toc__link:hover {
  color: var(--warm);
  border-color: var(--cyan);
}

.page-contact .toc__link[aria-current="true"] {
  color: var(--cyan);
  border-color: rgba(47, 227, 208, .6);
  background: rgba(47, 227, 208, .08);
}

/* ---------- 章节骨架 ---------- */
.page-contact .desk-section {
  padding-block: var(--desk-section-y);
  border-top: 1px solid var(--line);
}

.page-contact .desk-section:first-of-type {
  border-top: 0;
  padding-top: .4rem;
}

.page-contact .desk-section__title {
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(1.35rem, 3.2vw, 1.85rem);
  line-height: 1.28;
  letter-spacing: -0.02em;
  color: var(--warm);
  margin: 0 0 .9rem;
}

.page-contact .desk-lede,
.page-contact .desk-section > p {
  font-size: clamp(.95rem, 1.5vw, 1rem);
  line-height: 1.85;
  color: var(--mist);
  margin: 0 0 1.3rem;
  max-width: 64ch;
}

.page-contact .desk-figure {
  margin: 1.6rem 0;
}

.page-contact .media__cap {
  font-size: .78rem;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 渠道分工 ---------- */
.page-contact .channel-list {
  list-style: none;
  margin: 1.7rem 0 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-contact .channel-list__item {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(16, 31, 56, .55);
  padding: 1.15rem 1.2rem;
}

.page-contact .channel-list__item .tag {
  margin-bottom: .7rem;
}

.page-contact .channel-list__title {
  font-family: var(--sans);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: -0.01em;
  color: var(--warm);
  margin: 0 0 .5rem;
}

.page-contact .channel-list__item p {
  margin: 0;
  font-size: .9rem;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 时段图 ---------- */
.page-contact .hours-figure {
  margin: 1.6rem 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(16, 31, 56, .8), rgba(6, 14, 28, .9));
  padding: clamp(1rem, 2.6vw, 1.6rem);
}

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

.page-contact .hours-scale__base {
  stroke: var(--line);
}

.page-contact .hours-scale__active {
  stroke: var(--cyan);
}

.page-contact .hours-scale__ticks line {
  stroke: var(--line);
}

.page-contact .hours-scale__mark {
  fill: var(--orange);
}

.page-contact .hours-scale__label {
  fill: var(--mist);
  font-family: var(--mono);
  font-size: 12px;
}

.page-contact .hours-scale__label--key {
  fill: var(--cyan);
  font-size: 13px;
  font-weight: 600;
}

.page-contact .hours-figure figcaption {
  margin-top: 1rem;
  padding-top: .9rem;
  border-top: 1px solid var(--line);
  font-size: .8rem;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 咨询前准备 ---------- */
.page-contact .prep-list {
  list-style: none;
  margin: 1.6rem 0 0;
  padding: 0;
  display: grid;
  gap: 1.1rem;
  counter-reset: prep;
}

.page-contact .prep-list__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .95rem;
  align-items: start;
}

.page-contact .prep-list__num {
  display: grid;
  place-items: center;
  width: 2.2rem;
  height: 2.2rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-family: var(--mono);
  font-size: .78rem;
  font-weight: 600;
  color: var(--cyan);
  background: rgba(47, 227, 208, .06);
}

.page-contact .prep-list__body h3 {
  font-family: var(--sans);
  font-weight: 700;
  font-size: .98rem;
  color: var(--warm);
  letter-spacing: -0.005em;
  margin: .3rem 0 .4rem;
}

.page-contact .prep-list__body p {
  margin: 0;
  font-size: .9rem;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 纠错与合作 ---------- */
.page-contact .route-list {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-contact .route-list__item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: .5rem;
  padding-block: 1.1rem;
  border-top: 1px solid var(--line);
}

.page-contact .route-list__item:last-child {
  border-bottom: 1px solid var(--line);
}

.page-contact .route-list__key {
  font-family: var(--mono);
  font-size: .84rem;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--orange);
}

.page-contact .route-list__item p {
  margin: 0;
  font-size: .9rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .route-list__tail {
  margin: 1.3rem 0 0;
  font-size: .88rem;
  line-height: 1.85;
  color: var(--mist);
}

@media (min-width: 720px) {
  .page-contact .route-list__item {
    grid-template-columns: 9.5rem minmax(0, 1fr);
    gap: 1.4rem;
    align-items: baseline;
  }
}

/* ---------- 常见分类（手风琴） ---------- */
.page-contact .ask-group {
  margin-top: 1.4rem;
  border-top: 1px solid var(--line);
}

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

.page-contact .ask summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.2rem;
  padding: 1.05rem 0;
  cursor: pointer;
  list-style: none;
  transition: color .2s var(--ease);
}

.page-contact .ask summary::-webkit-details-marker {
  display: none;
}

.page-contact .ask__q {
  font-size: clamp(.92rem, 1.6vw, 1rem);
  font-weight: 600;
  line-height: 1.6;
  color: var(--warm);
  letter-spacing: -0.005em;
}

.page-contact .ask summary:hover .ask__q {
  color: var(--cyan);
}

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

.page-contact .ask__sign::before,
.page-contact .ask__sign::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  border-radius: 2px;
  transition: transform .22s var(--ease), opacity .22s var(--ease);
}

.page-contact .ask__sign::before {
  left: 0;
  right: 0;
  top: 6px;
  height: 2px;
}

.page-contact .ask__sign::after {
  top: 0;
  bottom: 0;
  left: 6px;
  width: 2px;
}

.page-contact .ask[open] .ask__sign::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-contact .ask__body {
  padding: 0 0 1.25rem;
}

.page-contact .ask__body p {
  margin: 0;
  max-width: 62ch;
  font-size: .9rem;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 页尾一行 ---------- */
.page-contact .desk-tail {
  margin: clamp(1.8rem, 4vw, 2.6rem) 0 0;
  padding-top: 1.2rem;
  border-top: 1px solid var(--line);
  font-size: .78rem;
  line-height: 1.9;
  color: rgba(168, 182, 200, .82);
}

.page-contact .desk-tail .link-arrow {
  color: var(--cyan);
}

/* ---------- 小屏兜底 ---------- */
@media (max-width: 480px) {
  .page-contact .desk-intro::before {
    inset: -2rem -1rem 0 -1rem;
  }

  .page-contact .prep-list__item {
    grid-template-columns: minmax(0, 1fr);
    gap: .55rem;
  }

  .page-contact .contact-list__value {
    word-break: break-all;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .toc__link,
  .page-contact .contact-list__value--link a,
  .page-contact .ask__sign::before,
  .page-contact .ask__sign::after,
  .page-contact .ask summary {
    transition: none;
  }
}
<<<END>>>