.page-contact {
  --pc-gap: 24px;
  --pc-line: 1px solid var(--line);
  background: var(--ink-950);
}

.page-contact a:focus-visible,
.page-contact button:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

.page-contact .section {
  padding-block: 44px;
}

.page-contact .contact-hero {
  padding: 26px 0 38px;
  border-bottom: var(--pc-line);
}

/* ---------- 首屏 ---------- */
.page-contact .hero-grid {
  display: grid;
  gap: 28px;
}

.page-contact .hero-copy {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-contact .hero-copy .display-1 {
  margin: 0;
  max-width: 22ch;
  color: var(--off-white);
}

.page-contact .hero-copy .lede {
  margin: 0;
  max-width: 58ch;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.75;
}

.page-contact .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-contact .hero-point {
  margin: 0;
  padding-left: 12px;
  border-left: 2px solid var(--cyan-dim);
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .hero-figure {
  margin: 0;
  border: var(--pc-line);
  background: var(--ink-900);
  display: flex;
  flex-direction: column;
}

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

.page-contact .hero-figure figcaption {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  line-height: 1.6;
  color: var(--muted);
  padding: 10px 12px;
  border-top: var(--pc-line);
  background: var(--ink-900);
}

/* ---------- 四类入口 ---------- */
.page-contact .topics-head {
  display: grid;
  gap: 10px;
  margin-bottom: 24px;
}

.page-contact .topics-head .display-2 {
  margin: 0;
  color: var(--off-white);
}

.page-contact .topic-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  border-top: var(--pc-line);
}

.page-contact .topic-item {
  display: grid;
  gap: 6px;
  padding: 18px 0;
  border-bottom: var(--pc-line);
  transition: border-color var(--ease);
}

.page-contact .topic-item:hover,
.page-contact .topic-item:focus-within {
  border-bottom-color: var(--cyan-dim);
}

.page-contact .topic-index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan-dim);
}

.page-contact .topic-item h3 {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--off-white);
}

.page-contact .topic-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
  max-width: 62ch;
}

.page-contact .topic-item a {
  justify-self: start;
  margin-top: 4px;
  font-size: 13px;
}

/* ---------- 联系方式 ---------- */
.page-contact .channels-head {
  display: grid;
  gap: 10px;
  margin-bottom: 24px;
}

.page-contact .channels-head .display-2 {
  margin: 0;
  color: var(--off-white);
}

.page-contact .channels-grid {
  display: grid;
  gap: 24px;
}

.page-contact .channel-card {
  position: relative;
  overflow: hidden;
  display: grid;
  gap: 20px;
  padding: 24px 20px;
  background: linear-gradient(158deg, var(--ink-900) 0%, var(--ink-850) 100%);
  border: var(--pc-line);
}

.page-contact .channel-card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 46px;
  height: 46px;
  background: linear-gradient(225deg, var(--cyan) 0 50%, transparent 50%);
  opacity: 0.5;
  pointer-events: none;
}

.page-contact .channel-block {
  display: grid;
  gap: 6px;
  justify-items: start;
  padding-bottom: 16px;
  border-bottom: var(--pc-line);
}

.page-contact .channel-block:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-contact .channel-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-contact .channel-value {
  font-family: var(--font-mono);
  font-size: clamp(15px, 4vw, 21px);
  line-height: 1.4;
  letter-spacing: 0.01em;
  color: var(--off-white);
  word-break: break-all;
}

.page-contact .channel-value--text {
  font-family: var(--font-body);
  font-size: clamp(15px, 3.6vw, 19px);
  word-break: normal;
  letter-spacing: 0.02em;
}

.page-contact .channel-block .copy-btn {
  margin-top: 6px;
  justify-self: start;
}

.page-contact .channel-notes {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-contact .notes-title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-contact .notes-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .notes-list li {
  padding-left: 14px;
  border-left: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .notes-list .num {
  display: inline-block;
  color: var(--amber);
  font-size: 14px;
  margin-right: 2px;
}

.page-contact .channel-notes .link-underline {
  justify-self: start;
  font-size: 13px;
}

/* ---------- 五步流程 ---------- */
.page-contact .flow-section {
  position: relative;
  overflow: hidden;
  background: var(--ink-950);
  border-top: var(--pc-line);
}

.page-contact .flow-texture {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.16;
  pointer-events: none;
}

.page-contact .flow-inner {
  position: relative;
  z-index: 1;
}

.page-contact .flow-head {
  display: grid;
  gap: 10px;
  max-width: 720px;
  margin-bottom: 30px;
}

.page-contact .flow-head .display-2 {
  margin: 0;
  color: var(--off-white);
}

.page-contact .flow-lede {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-contact .flow-step {
  display: grid;
  gap: 6px;
  padding: 16px 0 18px;
  border-top: 2px solid var(--line);
  transition: border-color var(--ease), background var(--ease);
}

.page-contact .flow-step:hover,
.page-contact .flow-step:focus-within {
  border-top-color: var(--amber);
  background: rgba(255, 179, 71, 0.06);
}

.page-contact .flow-index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-contact .flow-step h3 {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  color: var(--off-white);
}

.page-contact .flow-step p {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 咨询前准备 ---------- */
.page-contact .prep-grid {
  display: grid;
  gap: 28px;
}

.page-contact .prep-intro {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-contact .prep-intro .display-2 {
  margin: 0;
  color: var(--off-white);
}

.page-contact .prep-intro p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
  max-width: 46ch;
}

.page-contact .prep-intro .btn {
  justify-self: start;
}

.page-contact .prep-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  border-top: var(--pc-line);
}

.page-contact .prep-list li {
  display: grid;
  gap: 5px;
  padding: 14px 0;
  border-bottom: var(--pc-line);
}

.page-contact .prep-key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-contact .prep-list p {
  margin: 0;
  font-size: 15px;
  line-height: 1.65;
  color: var(--off-white);
}

/* ---------- 延伸入口 ---------- */
.page-contact .next {
  padding-bottom: 64px;
}

.page-contact .next .display-3 {
  margin: 0;
  color: var(--off-white);
}

.page-contact .next-links {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.page-contact .next-card {
  display: grid;
  gap: 4px;
  padding: 16px 18px;
  background: var(--ink-900);
  border: var(--pc-line);
  text-decoration: none;
  transition: border-color var(--ease), background var(--ease), transform var(--ease);
}

.page-contact .next-card:hover,
.page-contact .next-card:focus-visible {
  border-color: var(--cyan);
  background: var(--ink-850);
  transform: translateY(-2px);
}

.page-contact .next-index {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--cyan-dim);
}

.page-contact .next-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--off-white);
}

.page-contact .next-note {
  font-size: 13px;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- 宽屏 ---------- */
@media (min-width: 760px) {
  .page-contact .section {
    padding-block: 56px;
  }

  .page-contact .contact-hero {
    padding: 36px 0 48px;
  }

  .page-contact .topic-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 40px;
    border-top: 0;
  }

  .page-contact .topic-item {
    border-top: var(--pc-line);
  }

  .page-contact .next-links {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }
}

@media (min-width: 900px) {
  .page-contact .section {
    padding-block: 72px;
  }

  .page-contact .contact-hero {
    padding: 44px 0 60px;
  }

  .page-contact .hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 56px;
    align-items: start;
  }

  .page-contact .hero-copy .lede {
    font-size: 17px;
  }

  .page-contact .channels-grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    gap: 44px;
    align-items: start;
  }

  .page-contact .channel-card {
    padding: 30px 28px;
    gap: 22px;
  }

  .page-contact .flow {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    column-gap: 20px;
  }

  .page-contact .flow-step {
    padding: 18px 10px 22px 0;
  }

  .page-contact .prep-grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: 56px;
    align-items: start;
  }

  .page-contact .prep-list li {
    padding: 16px 0;
  }
}