.page-contact {
  --pc-pad: clamp(2.75rem, 7vw, 5.5rem);
  --pc-radius: 1.25rem;
  --pc-ink-soft: #3E5850;
}

.page-contact .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  padding-block: 1rem 0.5rem;
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  color: var(--c-text-dim);
}

.page-contact .crumbs a {
  color: var(--c-text-dim);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 160ms ease, border-color 160ms ease;
}

.page-contact .crumbs a:hover,
.page-contact .crumbs a:focus-visible {
  color: var(--c-accent);
  border-bottom-color: var(--c-accent);
}

.page-contact .crumbs [aria-current="page"] {
  color: var(--c-accent);
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  position: relative;
  padding-block-start: clamp(0.75rem, 2vw, 1.5rem);
  padding-block-end: 0;
}

.page-contact .contact-hero__inner {
  display: grid;
  gap: 1.125rem;
  max-width: 42rem;
  padding-block-end: clamp(1.75rem, 4vw, 2.75rem);
}

.page-contact .contact-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.875rem, 6.2vw, 3.4rem);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--c-text);
  text-wrap: balance;
}

.page-contact .contact-hero__lede {
  margin: 0;
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--c-text-dim);
  max-width: 40rem;
}

.page-contact .contact-hero__quick {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-block-start: 0.25rem;
}

.page-contact .contact-hero__figure {
  position: relative;
  margin: 0;
  border-radius: var(--pc-radius) var(--pc-radius) 0 0;
  overflow: hidden;
  background: var(--c-bg-deep);
}

.page-contact .contact-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1400 / 560;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.06);
}

.page-contact .contact-hero__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(to top, rgba(11, 43, 38, 0.92) 4%, rgba(11, 43, 38, 0) 58%),
    linear-gradient(to right, rgba(11, 43, 38, 0.55), rgba(11, 43, 38, 0) 45%);
}

.page-contact .contact-hero__cap {
  position: absolute;
  left: clamp(1.25rem, 4vw, 2.5rem);
  bottom: clamp(0.875rem, 2.5vw, 1.5rem);
  z-index: 1;
  margin: 0;
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  color: var(--c-accent-soft);
}

/* ---------- 章节 ---------- */

.page-contact .section {
  padding-block: var(--pc-pad);
}

.page-contact .section--tight {
  padding-block: calc(var(--pc-pad) * 0.78);
}

.page-contact .chapter__head {
  display: grid;
  gap: 0.625rem;
  max-width: 46rem;
  margin-block-end: clamp(1.75rem, 4.5vw, 2.75rem);
}

.page-contact .chapter__num {
  font-size: 0.8125rem;
  letter-spacing: 0.16em;
  color: var(--c-accent);
}

.page-contact .chapter__num::before {
  content: "";
  display: inline-block;
  width: 2rem;
  height: 1px;
  margin-inline-end: 0.6rem;
  vertical-align: middle;
  background: var(--c-accent);
}

.page-contact .chapter__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 4.4vw, 2.25rem);
  line-height: 1.22;
  letter-spacing: -0.01em;
}

.page-contact .chapter__lede {
  margin: 0;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--c-text-dim);
}

/* ---------- 01 可受理事项 ---------- */

.page-contact .service-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--c-line);
}

.page-contact .service-item {
  display: grid;
  grid-template-columns: 2.25rem minmax(0, 1fr);
  gap: 0.75rem 1rem;
  padding-block: 1.375rem;
  border-bottom: 1px solid var(--c-line);
}

.page-contact .service-item__idx {
  font-size: 0.8125rem;
  letter-spacing: 0.1em;
  color: var(--c-accent);
  padding-block-start: 0.28rem;
}

.page-contact .service-item__body {
  display: grid;
  gap: 0.4rem;
}

.page-contact .service-item__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.0625rem;
  line-height: 1.4;
  color: var(--c-text);
}

.page-contact .service-item__text {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--c-text-dim);
  max-width: 52rem;
}

/* ---------- 02 联系方式 ---------- */

.page-contact .channel-list {
  display: grid;
  gap: 1rem;
  margin: 0;
}

.page-contact .channel-row {
  display: grid;
  gap: 0.65rem;
  padding: 1.25rem 1.25rem 1.375rem;
  border: 1px solid var(--c-line);
  border-left: 3px solid var(--c-accent);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  background: var(--c-surface-2);
}

.page-contact .channel-key {
  font-size: 0.875rem;
  letter-spacing: 0.08em;
  color: var(--c-text-dim);
}

.page-contact .channel-val {
  display: grid;
  gap: 0.55rem;
  margin: 0;
}

.page-contact .channel-strong {
  display: block;
  font-size: clamp(1.0625rem, 3.4vw, 1.4375rem);
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: 0.02em;
  color: var(--c-accent);
  overflow-wrap: anywhere;
  user-select: all;
}

.page-contact .channel-note {
  display: block;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--c-text-dim);
  max-width: 48rem;
}

/* ---------- 03 反馈流程 ---------- */

.page-contact .flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-contact .flow-step {
  position: relative;
  padding: 1.125rem 1.125rem 1.25rem;
  border-top: 3px solid var(--c-action);
  border-radius: 0 0 var(--r-md) var(--r-md);
  background: linear-gradient(180deg, rgba(255, 106, 43, 0.13), rgba(255, 106, 43, 0) 72%), var(--c-surface-2);
}

.page-contact .flow-step__num {
  margin: 0 0 0.375rem;
  font-size: 0.8125rem;
  letter-spacing: 0.14em;
  color: var(--c-action-soft);
}

.page-contact .flow-step__title {
  margin: 0 0 0.45rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.0625rem;
  line-height: 1.35;
  color: var(--c-text);
}

.page-contact .flow-step__text {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--c-text-dim);
}

.page-contact .flow-step__more {
  margin-block-start: 0.875rem;
  border-top: 1px dashed var(--c-line);
  padding-block-start: 0.75rem;
}

.page-contact .flow-step__more summary {
  cursor: pointer;
  list-style: none;
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  color: var(--c-accent);
  transition: color 160ms ease;
}

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

.page-contact .flow-step__more summary::after {
  content: " ＋";
  font-family: var(--font-mono);
}

.page-contact .flow-step__more[open] summary::after {
  content: " －";
}

.page-contact .flow-step__more summary:hover,
.page-contact .flow-step__more summary:focus-visible {
  color: var(--c-accent-soft);
}

.page-contact .flow-step__more p {
  margin: 0.6rem 0 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--c-text-dim);
}

.page-contact .flow-note {
  margin: clamp(1.5rem, 4vw, 2rem) 0 0;
  padding: 0.875rem 1.125rem;
  border-left: 3px solid var(--c-action);
  background: rgba(255, 106, 43, 0.1);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--c-text);
}

.page-contact .flow-figure {
  margin: clamp(1.75rem, 4.5vw, 2.75rem) 0 0;
  border-radius: var(--pc-radius);
  overflow: hidden;
  background: var(--c-bg-deep);
}

.page-contact .flow-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1000 / 500;
  object-fit: cover;
  filter: saturate(0.8) contrast(1.05);
}

.page-contact .flow-figure figcaption {
  padding: 0.875rem clamp(1rem, 3vw, 1.5rem) 1.125rem;
  font-size: 0.8125rem;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--c-text-dim);
  border-top: 1px solid var(--c-line);
}

/* ---------- 04 合作洽谈 ---------- */

.page-contact .partner-split {
  display: grid;
  gap: 1.75rem;
}

.page-contact .partner-subtitle {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.0625rem;
  line-height: 1.4;
  color: var(--c-accent);
}

.page-contact .partner-split__lead p {
  margin: 0 0 0.875rem;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--c-text-dim);
}

.page-contact .partner-split__aside {
  padding: 1.25rem 1.25rem 1.375rem;
  border: 1px solid var(--c-line);
  border-radius: var(--r-md);
  background: var(--c-surface);
}

.page-contact .partner-needs {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}

.page-contact .partner-needs__item {
  position: relative;
  padding-inline-start: 1.125rem;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--c-text);
}

.page-contact .partner-needs__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 0.5rem;
  height: 1px;
  background: var(--c-action);
}

.page-contact .partner-pace {
  margin-block-start: 1.75rem;
  padding-block-start: 1.25rem;
  border-top: 1px solid var(--c-line);
  display: grid;
  gap: 0.6rem;
}

.page-contact .partner-pace__label {
  margin: 0;
  font-size: 0.8125rem;
  letter-spacing: 0.14em;
  color: var(--c-action-soft);
}

.page-contact .partner-pace__text {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--c-text-dim);
  max-width: 52rem;
}

/* ---------- 05 服务时间 ---------- */

.page-contact .hours-list {
  margin: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--c-line);
}

.page-contact .hours-row {
  display: grid;
  gap: 0.5rem;
  padding-block: 1.25rem;
  border-bottom: 1px solid var(--c-line);
}

.page-contact .hours-key {
  font-size: 0.875rem;
  letter-spacing: 0.1em;
  color: var(--c-text-dim);
}

.page-contact .hours-val {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--c-text);
}

.page-contact .hours-val .mono {
  color: var(--c-accent);
  margin-inline-end: 0.25rem;
}

/* ---------- 落款 ---------- */

.page-contact .contact-signoff {
  border-block-start: 1px solid var(--c-line);
}

.page-contact .contact-signoff__inner {
  display: grid;
  gap: 0.875rem;
  max-width: 48rem;
}

.page-contact .contact-signoff .eyebrow {
  margin: 0;
  color: var(--c-paper-ink);
  opacity: 0.72;
}

.page-contact .contact-signoff__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.1875rem, 3.6vw, 1.75rem);
  line-height: 1.45;
  letter-spacing: -0.01em;
  color: var(--c-paper-ink);
  text-wrap: balance;
}

.page-contact .contact-signoff__desc {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--c-paper-ink);
  opacity: 0.86;
}

.page-contact .contact-signoff__icp {
  margin: 0.5rem 0 0;
  font-size: 0.8125rem;
  letter-spacing: 0.05em;
  color: var(--pc-ink-soft);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-contact .service-item {
    grid-template-columns: 3rem minmax(0, 1fr);
    gap: 0.75rem 1.5rem;
    padding-block: 1.625rem;
  }

  .page-contact .channel-row {
    grid-template-columns: minmax(7.5rem, 9.5rem) minmax(0, 1fr);
    gap: 2rem;
    align-items: start;
    padding: 1.5rem 1.75rem 1.625rem;
  }

  .page-contact .channel-key {
    padding-block-start: 0.35rem;
  }
}

@media (min-width: 860px) {
  .page-contact .flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1rem;
    align-items: start;
    position: relative;
  }

  .page-contact .flow-step {
    padding: 1.5rem 1.125rem 1.5rem;
    min-height: 100%;
  }

  .page-contact .partner-split {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: 2.5rem;
    align-items: start;
  }

  .page-contact .hours-row {
    grid-template-columns: minmax(8rem, 12rem) minmax(0, 1fr);
    gap: 2rem;
    align-items: baseline;
  }
}

@media (min-width: 1080px) {
  .page-contact .contact-hero__inner {
    max-width: 46rem;
  }

  .page-contact .contact-hero__figure {
    border-radius: var(--r-lg) var(--r-lg) 0 0;
  }

  .page-contact .flow-step {
    padding: 1.75rem 1.375rem 1.875rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .crumbs a,
  .page-contact .flow-step__more summary {
    transition: none;
  }
}
</main>