.page-contact {
  --pc-cut: 8deg;
  --pc-board: #141C28;
  --pc-ink-soft: rgba(10, 18, 32, .64);
  --pc-gold-line: rgba(242, 178, 51, .52);
  background: var(--ink);
  color: var(--white);
  overflow-x: clip;
}

/* ---------- 首屏分屏 ---------- */
.page-contact .pc-hero {
  position: relative;
  padding-top: clamp(96px, 15vw, 148px);
  padding-bottom: clamp(40px, 6vw, 84px);
}

.page-contact .pc-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(58% 46% at 80% 10%, rgba(228, 0, 43, .22), transparent 72%),
    radial-gradient(54% 44% at 4% 82%, rgba(53, 224, 208, .13), transparent 74%);
}

.page-contact .pc-hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(154, 167, 184, .09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(154, 167, 184, .09) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: .55;
  -webkit-mask-image: linear-gradient(180deg, #000, transparent 84%);
  mask-image: linear-gradient(180deg, #000, transparent 84%);
}

.page-contact .pc-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(34px, 6vw, 56px);
  align-items: start;
}

.page-contact .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin-bottom: 18px;
  font-size: 13px;
  color: var(--mist);
}

.page-contact .breadcrumb a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 140ms ease, border-color 140ms ease;
}

.page-contact .breadcrumb a:hover {
  color: var(--white);
  border-bottom-color: var(--red);
}

.page-contact .breadcrumb-sep {
  color: rgba(154, 167, 184, .55);
}

.page-contact .pc-hero__main h1 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 6.6vw, 56px);
  line-height: 1.06;
  letter-spacing: -.02em;
  text-wrap: balance;
}

.page-contact .pc-hero__main .lede {
  margin-top: 18px;
  max-width: 54ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .pc-sub {
  margin: clamp(30px, 4.4vw, 44px) 0 0;
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: clamp(17px, 2.2vw, 21px);
  font-weight: 800;
  letter-spacing: -.01em;
}

.page-contact .pc-sub::before {
  content: "";
  width: 22px;
  height: 3px;
  border-radius: 999px;
  background: var(--red);
  flex: none;
}

/* ---------- 分段切换 ---------- */
.page-contact .pc-topics {
  margin-top: 16px;
}

.page-contact .pc-topics .tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-contact .pc-topics .tab {
  appearance: none;
  border: 1px solid var(--line-strong);
  background: rgba(30, 42, 58, .45);
  color: var(--mist);
  padding: 10px 18px;
  border-radius: 999px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .01em;
  cursor: pointer;
  transition: color 140ms ease, border-color 140ms ease, background 140ms ease;
}

.page-contact .pc-topics .tab:hover {
  color: var(--white);
  border-color: var(--cyan);
}

.page-contact .pc-topics .tab[aria-selected="true"] {
  color: var(--white);
  border-color: var(--cyan);
  background: var(--cyan-soft);
  box-shadow: inset 0 0 0 1px rgba(53, 224, 208, .35);
}

.page-contact .pc-topics .tab:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-contact .tab-panel {
  margin-top: 18px;
  padding: clamp(18px, 2.6vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: rgba(30, 42, 58, .52);
}

.page-contact .tab-panel h3 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(16px, 2vw, 19px);
  font-weight: 800;
  color: var(--white);
}

.page-contact .tab-panel p {
  margin: 0 0 12px;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--mist);
}

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

.page-contact .pc-panel-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-contact .pc-panel-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(234, 223, 207, .86);
}

.page-contact .pc-panel-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--gold);
}

/* ---------- 右侧联络板 ---------- */
.page-contact .pc-board {
  position: relative;
  z-index: 1;
  background: var(--pc-board);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  padding: clamp(18px, 3vw, 28px);
  box-shadow: var(--shadow);
}

.page-contact .pc-board::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: -8px -10px -8px -14px;
  border-radius: var(--r-xl);
  transform: skewX(calc(var(--pc-cut) * -1));
  background: linear-gradient(150deg, rgba(228, 0, 43, .42), rgba(30, 42, 58, .9) 52%, rgba(53, 224, 208, .3));
}

.page-contact .pc-board__figure {
  margin: 0 0 20px;
  border-radius: var(--r-md);
  overflow: hidden;
  border: 1px solid var(--line-soft);
}

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

.page-contact .pc-board__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.6vw, 24px);
  font-weight: 900;
  letter-spacing: -.01em;
}

.page-contact .pc-board__intro {
  margin: 10px 0 16px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .pc-mail {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: clamp(15px, 3.2vw, 21px);
  font-weight: 700;
  line-height: 1.4;
  color: var(--cyan);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .pc-board__row {
  display: grid;
  gap: 4px;
  padding: 13px 0;
  border-top: 1px solid var(--line-soft);
}

.page-contact .pc-board__k {
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .pc-board__v {
  font-size: 15px;
  font-weight: 600;
  color: var(--white);
}

.page-contact .pc-board__note {
  margin: 18px 0 0;
  padding: 14px 16px;
  border: 1px solid var(--pc-gold-line);
  border-radius: var(--r-md);
  background: var(--gold-soft);
  font-size: 13.5px;
  line-height: 1.75;
  color: rgba(242, 178, 51, .95);
}

/* ---------- 信件字段带 ---------- */
.page-contact .pc-form {
  position: relative;
  background: var(--cream);
  color: var(--ink);
  padding: clamp(56px, 7vw, 96px) 0 clamp(58px, 8vw, 100px);
}

.page-contact .pc-form::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: clamp(28px, 5vw, 62px);
  background: var(--char);
  clip-path: polygon(0 0, 100% 0, 0 100%);
  pointer-events: none;
}

.page-contact .pc-form::after {
  content: "";
  position: absolute;
  bottom: 0;
  right: 0;
  width: 100%;
  height: clamp(24px, 4vw, 48px);
  background: var(--char);
  clip-path: polygon(100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-contact .pc-form__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  align-items: start;
}

.page-contact .pc-form__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(22px, 3.4vw, 32px);
  font-weight: 900;
  letter-spacing: -.02em;
  color: var(--ink);
}

.page-contact .pc-form__lede {
  margin: 12px 0 26px;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.82;
  color: var(--pc-ink-soft);
}

.page-contact .pc-fields {
  display: grid;
  gap: 22px;
}

.page-contact .pc-field label {
  display: block;
  font-size: 12.5px;
  font-weight: 800;
  letter-spacing: .08em;
  color: var(--ink);
}

.page-contact .pc-field input {
  display: block;
  width: 100%;
  margin-top: 8px;
  padding: 9px 2px;
  font: inherit;
  font-size: 16px;
  color: var(--ink);
  background: transparent;
  border: 0;
  border-bottom: 2px solid rgba(10, 18, 32, .24);
  border-radius: 0;
  transition: border-color 140ms ease;
}

.page-contact .pc-field input::placeholder {
  color: rgba(10, 18, 32, .38);
}

.page-contact .pc-field input:hover {
  border-bottom-color: rgba(10, 18, 32, .44);
}

.page-contact .pc-field input:focus {
  outline: none;
  border-bottom-color: var(--red);
}

.page-contact .pc-field input:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-bottom-color: var(--red);
}

.page-contact .pc-field__hint {
  margin: 8px 0 0;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--pc-ink-soft);
}

.page-contact .pc-template {
  margin-top: clamp(26px, 3.4vw, 34px);
  padding: 18px 20px;
  border-radius: var(--r-lg);
  background: #10161F;
  border-left: 3px solid var(--red);
}

.page-contact .pc-template__label {
  margin: 0 0 10px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-contact .pc-template pre {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.95;
  color: #D6DFEB;
  white-space: pre-wrap;
  overflow-x: auto;
}

.page-contact .pc-form__aside img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: var(--r-lg);
  border: 1px solid rgba(10, 18, 32, .12);
  object-fit: cover;
}

.page-contact .pc-aside__note {
  margin: 14px 0 0;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--pc-ink-soft);
}

/* ---------- 处理流程 ---------- */
.page-contact .pc-process {
  background: var(--ink);
  padding: clamp(52px, 7vw, 96px) 0;
}

.page-contact .pc-process__head .lede {
  margin-top: 14px;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .pc-process__head h2 {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-size: clamp(22px, 3.4vw, 32px);
  font-weight: 900;
  letter-spacing: -.02em;
}

.page-contact .pc-steps {
  list-style: none;
  margin: clamp(28px, 4vw, 42px) 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-contact .pc-step {
  position: relative;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: rgba(30, 42, 58, .5);
}

.page-contact .pc-step::after {
  content: "";
  position: absolute;
  left: 22px;
  right: 22px;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--red), transparent);
  border-radius: 999px;
}

.page-contact .pc-step__num {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--gold);
}

.page-contact .pc-step h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  color: var(--white);
}

.page-contact .pc-step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .pc-escalate {
  margin: clamp(22px, 3vw, 30px) 0 0;
  padding: 16px 18px;
  border-left: 3px solid var(--cyan);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  background: var(--cyan-soft);
  font-size: 14px;
  line-height: 1.8;
  color: rgba(234, 223, 207, .92);
}

/* ---------- 办公地点与备案 ---------- */
.page-contact .pc-office {
  background: var(--char);
  padding: clamp(44px, 6vw, 80px) 0 clamp(56px, 8vw, 100px);
}

.page-contact .pc-office__grid {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
  align-items: start;
}

.page-contact .pc-office__main h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(21px, 3vw, 28px);
  font-weight: 900;
  letter-spacing: -.02em;
}

.page-contact .pc-office__main p {
  margin: 0 0 14px;
  max-width: 58ch;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--mist);
}

.page-contact .pc-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-contact .pc-office__box {
  padding: 20px 22px;
  border: 1px solid var(--pc-gold-line);
  border-radius: var(--r-lg);
  background: rgba(242, 178, 51, .07);
}

.page-contact .pc-office__k {
  margin: 0 0 4px;
  font-size: 11.5px;
  font-weight: 800;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-contact .pc-office__v {
  margin: 0 0 16px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--white);
}

.page-contact .pc-office__v:last-child {
  margin-bottom: 0;
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-contact .pc-fields {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px 28px;
  }
}

@media (min-width: 820px) {
  .page-contact .pc-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-contact .pc-office__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  }
}

@media (min-width: 920px) {
  .page-contact .pc-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(36px, 5vw, 64px);
  }

  .page-contact .pc-board {
    position: sticky;
    top: 104px;
  }

  .page-contact .pc-board::before {
    inset: -12px -14px -12px -20px;
  }

  .page-contact .pc-form__grid {
    grid-template-columns: minmax(0, 2.1fr) minmax(0, 1fr);
  }
}

@media (min-width: 1120px) {
  .page-contact .pc-fields {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px 36px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .pc-board::before {
    transform: none;
  }

  .page-contact .breadcrumb a,
  .page-contact .pc-topics .tab,
  .page-contact .pc-field input {
    transition: none;
  }
}
<<<END>>>