.page-contact {
  --contact-gap: 20px;
  padding-bottom: 64px;
}

.page-contact .mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding: 26px 0 26px;
  border-bottom: 2px solid var(--line);
}

.page-contact .contact-hero h1 {
  margin: 10px 0 16px;
  font-size: clamp(30px, 7vw, 62px);
  font-weight: 300;
  line-height: 1.16;
  letter-spacing: 0.01em;
  max-width: 24ch;
}

.page-contact .contact-hero__lead {
  margin: 0 0 20px;
  max-width: 44em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .contact-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--paper);
}

.page-contact .contact-hero__meta li {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border: 2px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-800);
}

.page-contact .contact-hero__meta li::before {
  content: "";
  flex: 0 0 auto;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
}

.page-contact .contact-hero__meta li:nth-child(2)::before {
  background: var(--amber);
}

/* ---------- 非对称双栏 ---------- */
.page-contact .contact-split {
  display: grid;
  gap: var(--contact-gap);
  padding: 30px 0;
  border-bottom: 2px solid var(--line);
}

.page-contact .contact-split__main {
  order: 1;
  min-width: 0;
}

.page-contact .contact-aside {
  order: 2;
  min-width: 0;
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-contact .contact-aside__figure {
  margin: 0;
  border: 2px solid var(--line);
  background: var(--ink-800);
  box-shadow: var(--shadow-hard);
}

.page-contact .contact-aside__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-contact .contact-aside__figure figcaption {
  padding: 10px 14px;
  border-top: 2px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.page-contact .contact-place {
  padding: 16px 18px;
  border: 2px solid var(--line);
  border-left: 4px solid var(--cyan);
  background: var(--ink-800);
}

.page-contact .contact-place__label {
  margin: 0 0 8px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-contact .contact-place__addr {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--paper);
}

.page-contact .contact-facts {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-contact .contact-facts li {
  padding-top: 10px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.75;
  color: var(--paper);
}

.page-contact .contact-facts span {
  display: block;
  margin-bottom: 4px;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

/* ---------- 联系方式卡 ---------- */
.page-contact .contact-reach {
  display: grid;
  gap: 16px;
}

.page-contact .contact-reach__mail {
  padding: 20px;
  background: var(--amber);
  color: var(--ink-900);
  border: 2px solid var(--ink-900);
  box-shadow: var(--shadow-hard);
}

.page-contact .contact-reach__label {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--ink-800);
}

.page-contact .contact-reach__address {
  margin: 0 0 14px;
  font-size: clamp(19px, 4.8vw, 32px);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: 0.01em;
  overflow-wrap: anywhere;
}

.page-contact .contact-reach__note {
  margin: 0;
  padding-top: 12px;
  border-top: 2px solid var(--ink-800);
  font-size: 13px;
  line-height: 1.8;
  color: var(--ink-900);
}

.page-contact .contact-reach__tip {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--ink-800);
}

.page-contact .contact-reach__phone {
  padding: 18px 20px;
  background: var(--ink-700);
  border: 2px solid var(--line);
}

.page-contact .contact-reach__phone .contact-reach__label {
  color: var(--mist);
}

.page-contact .contact-reach__number {
  margin: 0 0 10px;
  font-size: clamp(24px, 5.6vw, 36px);
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--paper);
}

.page-contact .contact-reach__hint {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 四类事项 ---------- */
.page-contact .contact-duty__lead {
  margin: 18px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .duty-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 24px;
}

.page-contact .duty {
  --accent: var(--cyan);
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 18px;
  background: var(--ink-800);
  border: 2px solid var(--line);
  border-top: 4px solid var(--accent);
}

.page-contact .duty--auth {
  --accent: var(--tag-mfg);
}

.page-contact .duty--perm {
  --accent: var(--tag-logi);
}

.page-contact .duty--tag {
  --accent: var(--tag-edu);
}

.page-contact .duty--export {
  --accent: var(--amber);
}

.page-contact .duty__index {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--accent);
}

.page-contact .duty h3 {
  margin: 0;
  font-size: 19px;
  font-weight: 500;
  color: var(--paper);
}

.page-contact .duty p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .duty .duty__fit {
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.75;
  color: var(--paper);
}

/* ---------- 合作流程 ---------- */
.page-contact .contact-flow__grid {
  display: grid;
  gap: 24px;
  margin-top: 24px;
}

.page-contact .contact-flow__figure {
  margin: 0;
  border: 2px solid var(--line);
  background: var(--ink-800);
  box-shadow: var(--shadow-hard);
}

.page-contact .contact-flow__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 25 / 14;
  object-fit: cover;
}

.page-contact .contact-flow__figure figcaption {
  padding: 10px 14px;
  border-top: 2px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.page-contact .contact-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-contact .contact-step summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: var(--ink-800);
  border: 2px solid var(--line);
  cursor: pointer;
  list-style: none;
}

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

.page-contact .contact-step summary:hover {
  border-color: var(--cyan);
}

.page-contact .contact-step summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-contact .contact-step[open] summary {
  border-color: var(--amber);
  background: var(--ink-700);
}

.page-contact .contact-step__num {
  flex: 0 0 auto;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--amber);
}

.page-contact .contact-step__title {
  flex: 1 1 auto;
  font-size: 16px;
  font-weight: 500;
  color: var(--paper);
}

.page-contact .contact-step__hint {
  flex: 0 0 auto;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--mist);
  white-space: nowrap;
}

.page-contact .contact-step__body {
  margin-left: 14px;
  padding: 14px 16px 6px;
  border-left: 2px solid var(--line);
}

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

.page-contact .contact-step__body p:last-child {
  margin-bottom: 0;
  color: var(--paper);
}

/* ---------- 响应时效 ---------- */
.page-contact .contact-sla {
  margin: 8px 0 0;
  padding: 24px 20px;
  background: var(--ink-800);
  border: 2px solid var(--line);
  border-left: 4px solid var(--amber);
}

.page-contact .contact-sla__head h2 {
  margin: 0 0 10px;
  font-size: clamp(22px, 4.2vw, 34px);
  font-weight: 400;
  line-height: 1.35;
  color: var(--paper);
}

.page-contact .contact-sla__head p {
  margin: 0;
  max-width: 46em;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .contact-sla__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 16px;
  margin-top: 22px;
  padding-top: 20px;
  border-top: 2px solid var(--line);
}

.page-contact .contact-sla__grid .stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-left: 12px;
  border-left: 2px solid var(--cyan);
}

.page-contact .contact-sla__grid .stat__value {
  font-family: var(--font-mono);
  font-size: clamp(22px, 4.6vw, 32px);
  font-weight: 500;
  line-height: 1.15;
  color: var(--paper);
}

.page-contact .contact-sla__grid .stat__label {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- 准备信息 + 相关页面 ---------- */
.page-contact .contact-prep__grid {
  display: grid;
  gap: 28px;
}

.page-contact .contact-prep__main {
  min-width: 0;
}

.page-contact .contact-prep__main .prose {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .prep-list {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-contact .prep-item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 10px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.page-contact .prep-item__num {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--amber);
  padding-top: 4px;
}

.page-contact .prep-item h3 {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 500;
  color: var(--paper);
}

.page-contact .prep-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .contact-links {
  display: grid;
  gap: 10px;
  align-content: start;
  padding: 18px;
  border: 2px solid var(--line);
  background: var(--ink-800);
  box-shadow: var(--shadow-hard);
}

.page-contact .contact-links__title {
  margin: 0 0 4px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-contact .contact-link {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 14px;
  border: 2px solid var(--line);
  border-radius: var(--radius);
  text-decoration: none;
  transition: border-color 180ms ease, background-color 180ms ease;
}

.page-contact .contact-link__name {
  font-size: 15px;
  font-weight: 500;
  color: var(--paper);
}

.page-contact .contact-link__desc {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--mist);
}

.page-contact .contact-link:hover,
.page-contact .contact-link:focus-visible {
  border-color: var(--cyan);
  background: var(--ink-700);
}

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

/* ---------- 窄屏兜底 ---------- */
@media (max-width: 420px) {
  .page-contact .contact-step__hint {
    display: none;
  }

  .page-contact .contact-sla__grid {
    grid-template-columns: 1fr;
  }
}

/* ---------- 中等屏 ---------- */
@media (min-width: 700px) {
  .page-contact .contact-hero__lead {
    font-size: 16px;
  }

  .page-contact .duty-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .contact-sla {
    padding: 28px 26px;
  }
}

/* ---------- 宽屏 ---------- */
@media (min-width: 980px) {
  .page-contact .contact-split {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 32px;
    align-items: start;
    padding: 40px 0;
  }

  .page-contact .contact-aside {
    order: 1;
  }

  .page-contact .contact-split__main {
    order: 2;
  }

  .page-contact .contact-flow__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: 28px;
    align-items: start;
  }

  .page-contact .contact-prep__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 32px;
    align-items: start;
  }

  .page-contact .contact-sla__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1180px) {
  .page-contact .duty-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}