.page-contact {
  --pc-gap: clamp(56px, 9vw, 116px);
  padding-bottom: clamp(40px, 6vw, 72px);
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumb {
  margin-bottom: clamp(22px, 4vw, 38px);
}
.page-contact .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0;
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-contact .breadcrumb__item {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--muted);
}
.page-contact .breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  margin: 0 10px;
  color: var(--line-grid);
}
.page-contact .breadcrumb__item a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.18s var(--ease);
}
.page-contact .breadcrumb__item a:hover,
.page-contact .breadcrumb__item a:focus-visible {
  color: var(--cyan);
}
.page-contact .breadcrumb__item[aria-current="page"] {
  color: var(--bright);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  max-width: 50rem;
  margin-bottom: clamp(48px, 8vw, 92px);
}
.page-contact .contact-hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.28em;
  color: var(--cyan);
  margin: 0 0 18px;
  padding-left: 14px;
  position: relative;
}
.page-contact .contact-hero__eyebrow::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 8px;
  height: 1px;
  background: var(--cyan);
}
.page-contact .contact-hero__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 6.4vw, 3.5rem);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.018em;
  color: var(--bright);
  margin: 0 0 24px;
}
.page-contact .contact-hero__lede {
  max-width: 34em;
  font-size: clamp(1rem, 1.6vw, 1.08rem);
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 章节骨架 ---------- */
.page-contact .chapter {
  margin-bottom: var(--pc-gap);
}
.page-contact .chapter:last-of-type {
  margin-bottom: 0;
}
.page-contact .chapter__head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px 16px;
  margin-bottom: 12px;
}
.page-contact .chapter__num {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.2em;
  color: var(--orange);
  flex: 0 0 auto;
}
.page-contact .chapter__title {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3.1vw, 1.9rem);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.012em;
  color: var(--bright);
  margin: 0;
}
.page-contact .chapter__sub {
  max-width: 38em;
  margin: 0 0 clamp(24px, 4vw, 40px);
  font-size: 0.96rem;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 配图 ---------- */
.page-contact .contact-figure {
  margin: 0 0 clamp(28px, 5vw, 46px);
  border: 1px solid var(--line-grid);
  border-radius: var(--radius);
  background: var(--ink-panel);
  overflow: hidden;
}
.page-contact .contact-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 三条通道 ---------- */
.page-contact .channels {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}
.page-contact .channel {
  position: relative;
  margin: 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--line-grid);
}
.page-contact .channel::before {
  content: "";
  position: absolute;
  top: -5px;
  left: 0;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px var(--ink-void), 0 0 12px rgba(91, 231, 214, 0.5);
}
.page-contact .channel--mid::before {
  background: var(--violet);
  box-shadow: 0 0 0 4px var(--ink-void), 0 0 12px rgba(122, 107, 255, 0.5);
}
.page-contact .channel--last::before {
  background: var(--orange);
  box-shadow: 0 0 0 4px var(--ink-void), 0 0 12px rgba(255, 122, 61, 0.5);
}
.page-contact .channel__summary {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 0 26px 0 0;
  cursor: pointer;
  list-style: none;
}
.page-contact .channel__summary::-webkit-details-marker {
  display: none;
}
.page-contact .channel__summary:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 4px;
  border-radius: 4px;
}
.page-contact .channel__summary::after {
  content: "";
  position: absolute;
  right: 4px;
  top: 26px;
  width: 8px;
  height: 8px;
  border-right: 1.5px solid var(--muted);
  border-bottom: 1.5px solid var(--muted);
  transform: rotate(45deg);
  transition: transform 0.2s var(--ease);
}
.page-contact .channel[open] .channel__summary::after {
  transform: rotate(-135deg);
}
.page-contact .channel__idx {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.22em;
  color: var(--muted);
}
.page-contact .channel__name {
  font-family: var(--font-display);
  font-size: 1.16rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--bright);
}
.page-contact .channel__meta {
  font-size: 0.82rem;
  line-height: 1.55;
  color: var(--muted);
}
.page-contact .channel__body {
  padding-top: 14px;
  font-size: 0.93rem;
  line-height: 1.8;
  color: var(--muted);
}
.page-contact .channel__body p {
  margin: 0 0 12px;
}
.page-contact .channel__body p:last-of-type {
  margin-bottom: 0;
}
.page-contact .channel__btn {
  margin-top: 14px;
}

/* ---------- 自助场景清单 ---------- */
.page-contact .cases {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-grid);
}
.page-contact .cases__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line-grid);
}
.page-contact .cases__idx {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--muted);
}
.page-contact .cases__title {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 1.04rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--bright);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.page-contact .cases__title:hover,
.page-contact .cases__title:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}
.page-contact .cases__text {
  max-width: 42em;
  margin: 8px 0 0;
  font-size: 0.91rem;
  line-height: 1.78;
  color: var(--muted);
}

.page-contact .contact-note {
  margin-top: 30px;
  padding: 18px 22px;
  border-left: 3px solid var(--cyan);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: linear-gradient(90deg, rgba(91, 231, 214, 0.09), rgba(91, 231, 214, 0));
}
.page-contact .contact-note p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--bright);
}

/* ---------- 邮件要点切换 ---------- */
.page-contact .contact-switch__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}
.page-contact .contact-switch .switch__btn {
  font-family: inherit;
  font-size: 0.87rem;
  line-height: 1;
  padding: 11px 18px;
  border-radius: 999px;
  border: 1px solid var(--line-grid);
  background: var(--ink-panel);
  color: var(--muted);
  cursor: pointer;
  transition: color 0.18s var(--ease), background 0.18s var(--ease), border-color 0.18s var(--ease);
}
.page-contact .contact-switch .switch__btn:hover {
  color: var(--bright);
  border-color: var(--cyan);
}
.page-contact .contact-switch .switch__btn[aria-selected="true"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink-void);
  font-weight: 600;
}
.page-contact .contact-switch .switch__btn:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
}
.page-contact .contact-switch__panel {
  padding: clamp(16px, 3vw, 28px);
  border: 1px solid var(--line-grid);
  border-radius: var(--radius);
  background: var(--ink-panel);
}

.page-contact .check-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-contact .check-list > li + li {
  border-top: 1px solid rgba(42, 54, 84, 0.65);
}
.page-contact .check-item {
  display: flex;
  align-items: flex-start;
  gap: 13px;
  padding: 13px 0;
  cursor: pointer;
}
.page-contact .check-item input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}
.page-contact .check-item__box {
  position: relative;
  flex: 0 0 18px;
  width: 18px;
  height: 18px;
  margin-top: 3px;
  border: 1px solid var(--line-grid);
  border-radius: 4px;
  background: var(--ink-float);
  transition: border-color 0.18s var(--ease), background 0.18s var(--ease);
}
.page-contact .check-item input:checked + .check-item__box {
  border-color: var(--cyan);
  background: rgba(91, 231, 214, 0.16);
}
.page-contact .check-item input:checked + .check-item__box::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 1px;
  width: 5px;
  height: 9px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(40deg);
}
.page-contact .check-item input:focus-visible + .check-item__box {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
}
.page-contact .check-item__text {
  font-size: 0.93rem;
  line-height: 1.72;
  color: var(--bright);
}

/* ---------- 响应时间 ---------- */
.page-contact .hours {
  margin: 0 0 clamp(24px, 4vw, 36px);
  border-top: 1px solid var(--line-grid);
}
.page-contact .hours__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 22px;
  padding: 17px 0;
  border-bottom: 1px solid var(--line-grid);
}
.page-contact .hours__key {
  flex: 0 0 7.5em;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  color: var(--muted);
}
.page-contact .hours__val {
  margin: 0;
  flex: 1 1 16em;
  font-family: var(--font-display);
  font-size: clamp(1rem, 2.1vw, 1.18rem);
  font-weight: 600;
  line-height: 1.5;
  color: var(--bright);
}

.page-contact .clock__labels {
  display: flex;
  justify-content: space-between;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--muted);
}
.page-contact .clock__track {
  position: relative;
  height: 8px;
  border: 1px solid var(--line-grid);
  border-radius: 999px;
  background: var(--ink-panel);
  overflow: hidden;
}
.page-contact .clock__fill {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 37.5%;
  width: 37.5%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--cyan), var(--orange));
}
.page-contact .clock__cap {
  margin: 14px 0 0;
  max-width: 40em;
  font-size: 0.86rem;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 联络信息 ---------- */
.page-contact .contact-info {
  max-width: 44rem;
  border-top: 1px solid var(--line-grid);
}
.page-contact .contact-info__item {
  padding: 22px 0;
  border-bottom: 1px solid var(--line-grid);
}
.page-contact .contact-info__key {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--muted);
}
.page-contact .contact-info__value {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.08rem, 2.6vw, 1.42rem);
  font-weight: 600;
  line-height: 1.45;
  color: var(--bright);
  overflow-wrap: anywhere;
}
.page-contact .contact-info__value--mono {
  font-family: var(--font-mono);
  font-size: clamp(0.96rem, 2.3vw, 1.22rem);
  letter-spacing: 0.02em;
}
.page-contact .contact-info__value--dim {
  font-size: clamp(0.86rem, 1.9vw, 0.98rem);
  font-weight: 400;
  color: var(--muted);
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 760px) {
  .page-contact .channels {
    grid-template-columns: repeat(3, 1fr);
    gap: 0 26px;
  }
  .page-contact .channel__summary::after {
    top: 28px;
  }
  .page-contact .cases__item {
    grid-template-columns: 3.5rem 1fr;
    gap: 20px;
    padding: 24px 0;
  }
  .page-contact .hours__row {
    padding: 20px 0;
  }
}

@media (min-width: 1100px) {
  .page-contact .contact-hero {
    max-width: 54rem;
  }
  .page-contact .channels {
    gap: 0 34px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel__summary::after,
  .page-contact .cases__title,
  .page-contact .contact-switch .switch__btn,
  .page-contact .check-item__box {
    transition: none;
  }
}
<<<END>>>