.page-contact {
  --contact-col: 780px;
  background: var(--ink-950);
  color: var(--text-hi);
  font-family: var(--font-body);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: calc(var(--header-h-mobile) + 30px) 0 48px;
  border-bottom: 1px solid var(--ink-800);
}

.page-contact .contact-hero__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: .34;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(180deg, rgba(6, 19, 32, .62) 0%, rgba(6, 19, 32, .88) 58%, var(--ink-950) 100%),
    repeating-linear-gradient(90deg, rgba(27, 58, 80, .5) 0 1px, transparent 1px 92px),
    repeating-linear-gradient(0deg, rgba(27, 58, 80, .38) 0 1px, transparent 1px 92px);
}

.page-contact .contact-hero__inner .breadcrumb {
  margin-bottom: 26px;
}

.page-contact .contact-hero__inner .breadcrumb__link,
.page-contact .contact-hero__inner .breadcrumb__item {
  color: var(--mist-300);
  font-size: 12px;
  letter-spacing: .16em;
}

.page-contact .contact-hero__inner .eyebrow {
  color: var(--cyan-400);
  margin: 0 0 14px;
}

.page-contact .contact-hero h1 {
  margin: 0;
  max-width: 18em;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: clamp(1.9rem, 6.2vw, 3.2rem);
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--text-hi);
}

.page-contact .contact-hero__lead {
  margin: 20px 0 0;
  max-width: 620px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-mid);
}

/* ---------- 主体栏 ---------- */
.page-contact .contact-body {
  padding: 42px 0 72px;
}

.page-contact .contact-col {
  max-width: var(--contact-col);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.page-contact .c-section {
  padding-top: 38px;
}

.page-contact .c-section:first-child {
  padding-top: 0;
}

.page-contact .c-section + .c-section,
.page-contact .c-section--last {
  margin-top: 38px;
  border-top: 1px solid var(--ink-800);
}

.page-contact .c-title {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 0 0 16px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: clamp(1.15rem, 4vw, 1.5rem);
  line-height: 1.35;
  letter-spacing: -0.005em;
  color: var(--text-hi);
}

.page-contact .c-title__num {
  flex: none;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--cyan-400);
}

.page-contact .c-text {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-mid);
}

.page-contact .c-text:last-child {
  margin-bottom: 0;
}

.page-contact .c-link {
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(63, 227, 210, .4);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-contact .c-link:hover {
  color: var(--cyan-300);
  border-bottom-color: var(--cyan-400);
}

.page-contact .c-link:focus-visible {
  outline: 2px solid var(--cyan-400);
  outline-offset: 2px;
  border-radius: 2px;
}

/* ---------- 邮箱焦点块 ---------- */
.page-contact .mail-panel {
  position: relative;
  margin-top: 18px;
  padding: 24px 22px 24px 26px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--ink-800) 0%, var(--ink-900) 68%);
  box-shadow: var(--shadow-panel);
}

.page-contact .mail-panel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 26px;
  bottom: 26px;
  width: 3px;
  border-radius: var(--pill);
  background: var(--cyan-400);
}

.page-contact .mail-panel__label {
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: .3em;
  color: var(--mist-300);
}

.page-contact .mail-panel__addr {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(1rem, 4.1vw, 1.85rem);
  font-weight: 500;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--cyan-300);
  word-break: break-all;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-slow) var(--ease);
}

.page-contact .mail-panel:hover .mail-panel__addr {
  border-bottom-color: var(--cyan-400);
}

.page-contact .mail-panel__hint {
  margin: 18px 0 0;
  max-width: 46em;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist-300);
}

/* ---------- 勾选清单 ---------- */
.page-contact .check-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-contact .check-list__item {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 14px;
  align-items: start;
  padding: 16px 14px;
  border-radius: var(--radius-md);
  background: var(--ink-900);
  transition: background-color var(--dur) var(--ease);
}

.page-contact .check-list__item:hover {
  background: var(--ink-800);
}

.page-contact .check-list__box {
  appearance: none;
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  margin: 3px 0 0;
  border: 1px solid var(--ink-700);
  border-radius: 5px;
  background: var(--ink-950);
  cursor: pointer;
  transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .check-list__box:checked {
  background: var(--cyan-400);
  border-color: var(--cyan-400);
}

.page-contact .check-list__box:hover {
  border-color: var(--cyan-400);
}

.page-contact .check-list__box:focus-visible {
  outline: 2px solid var(--cyan-400);
  outline-offset: 2px;
}

.page-contact .check-list__label {
  display: block;
  cursor: pointer;
}

.page-contact .check-list__title {
  display: block;
  font-size: 15px;
  font-weight: 700;
  color: var(--text-hi);
  margin-bottom: 6px;
}

.page-contact .check-list__desc {
  display: block;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist-300);
}

/* ---------- 处理流程 ---------- */
.page-contact .flow {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  margin: 20px 0 22px;
  padding: 0;
}

.page-contact .flow__node {
  position: relative;
  padding: 7px 15px;
  border: 1px solid var(--ink-700);
  border-radius: var(--pill);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--text-mid);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-contact .flow__node:hover {
  border-color: var(--cyan-400);
  color: var(--cyan-300);
}

.page-contact .flow__node:not(:last-child)::after {
  content: "";
  position: absolute;
  right: -22px;
  top: 50%;
  width: 16px;
  height: 1px;
  background: var(--ink-700);
}

/* ---------- 标签 / 值对齐表 ---------- */
.page-contact .spec {
  margin: 20px 0 22px;
  padding: 0;
}

.page-contact .spec__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px 22px;
  padding: 14px 0;
  border-bottom: 1px solid var(--ink-800);
}

.page-contact .spec__key {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--mist-300);
}

.page-contact .spec__val {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-hi);
}

.page-contact .spec__val.mono {
  letter-spacing: .03em;
  color: var(--cyan-300);
}

/* ---------- 装饰条带 ---------- */
.page-contact .c-band {
  position: relative;
  margin: 40px 0 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--ink-900);
}

.page-contact .c-band img {
  display: block;
  width: 100%;
  height: 130px;
  object-fit: cover;
  opacity: .42;
}

.page-contact .c-band__cap {
  position: absolute;
  left: 18px;
  bottom: 14px;
  font-size: 11px;
  letter-spacing: .26em;
  color: var(--cyan-300);
}

/* ---------- 桌面 ---------- */
@media (min-width: 640px) {
  .page-contact .spec__row {
    grid-template-columns: 132px 1fr;
    align-items: baseline;
  }

  .page-contact .mail-panel {
    padding: 30px 30px 30px 34px;
  }

  .page-contact .c-band img {
    height: 170px;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero {
    padding: 96px 0 72px;
  }

  .page-contact .contact-hero__inner .breadcrumb {
    margin-bottom: 34px;
  }

  .page-contact .contact-body {
    padding: 56px 0 96px;
  }

  .page-contact .c-section {
    padding-top: 46px;
  }

  .page-contact .c-section + .c-section,
  .page-contact .c-section--last {
    margin-top: 46px;
  }

  .page-contact .c-band {
    margin-top: 48px;
  }

  .page-contact .c-band img {
    height: 200px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .c-link,
  .page-contact .mail-panel__addr,
  .page-contact .check-list__item,
  .page-contact .check-list__box,
  .page-contact .flow__node {
    transition: none;
  }
}
<<<END>>>