.page-contact {
  display: block;
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  padding: clamp(1.5rem, 4vw, 3rem) 0 clamp(2.5rem, 6vw, 4.5rem);
  color: var(--mortar-light);
}

.page-contact .breadcrumb {
  margin-bottom: clamp(1.5rem, 3.5vw, 2.75rem);
}

.page-contact .hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.75rem, 4.5vw, 3rem);
  align-items: start;
}

.page-contact .hero-figure {
  margin: 0;
}

.page-contact .hero-figure .figure-frame__media {
  aspect-ratio: 3 / 2;
}

.page-contact .hero-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: .85rem;
}

.page-contact .contact-hero .eyebrow {
  color: var(--pitch-soft);
}

.page-contact .hero-title {
  margin: 0;
  letter-spacing: -.02em;
}

.page-contact .hero-anchor {
  margin: .35rem 0 0;
}

.page-contact .jump-link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: .82rem;
  letter-spacing: .06em;
  color: var(--pitch-soft);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 2px;
  transition: color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-contact .jump-link:hover,
.page-contact .jump-link:focus-visible {
  color: var(--mortar-light);
  transform: translateY(2px);
}

/* ---------- 纸面主区 ---------- */

.page-contact .contact-sheet {
  background-color: var(--mortar-light);
  background-image: repeating-linear-gradient(
    to bottom,
    transparent 0 47px,
    rgba(38, 37, 33, .07) 47px 48px
  );
  color: var(--mortar-deep);
  padding: clamp(2.5rem, 6vw, 4.5rem) 0 clamp(3rem, 7vw, 5.5rem);
}

.page-contact .sheet-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 3.5rem);
  align-items: start;
}

.page-contact .sheet-title {
  font-family: var(--font-display);
  font-size: var(--step-3);
  line-height: 1.18;
  letter-spacing: -.015em;
  margin: .4rem 0 0;
}

.page-contact .contact-sheet .eyebrow {
  color: var(--pitch);
}

.page-contact .channel-panel .eyebrow {
  color: var(--pitch-soft);
}

/* ---------- 渠道面板 ---------- */

.page-contact .channel-panel {
  background-color: var(--scoreboard);
  color: var(--mortar-light);
  border: 3px solid var(--mortar-deep);
  box-shadow: 9px 9px 0 var(--mortar-deep);
  padding: clamp(1.5rem, 4vw, 2.5rem);
}

.page-contact .channel-panel .sheet-title {
  color: var(--mortar-light);
  margin-bottom: 1rem;
}

.page-contact .channel-block {
  padding: 1.15rem 0;
  border-top: 1px solid rgba(239, 235, 225, .18);
}

.page-contact .channel-block:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.page-contact .channel-label {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .1em;
  color: var(--pitch-soft);
  margin: 0;
}

.page-contact .contact-dot {
  display: inline-block;
  width: 9px;
  height: 9px;
  background-color: var(--stoppage);
  flex: none;
}

.page-contact .channel-value {
  font-family: var(--font-mono);
  font-size: clamp(.95rem, 3.6vw, 1.35rem);
  line-height: 1.35;
  color: var(--mortar-light);
  margin: .45rem 0 0;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .channel-value--small {
  font-size: clamp(.92rem, 3vw, 1.1rem);
}

.page-contact .channel-note {
  font-size: .84rem;
  line-height: 1.7;
  color: rgba(239, 235, 225, .68);
  margin: .5rem 0 0;
}

.page-contact .pick {
  -webkit-user-select: all;
  user-select: all;
}

/* ---------- 右侧分节 ---------- */

.page-contact .sheet-section {
  scroll-margin-top: 6rem;
}

.page-contact .sheet-section + .sheet-section {
  margin-top: clamp(2.25rem, 5vw, 3.25rem);
  padding-top: clamp(2.25rem, 5vw, 3.25rem);
  border-top: 1px solid var(--seam-dark);
}

.page-contact .sheet-section:target {
  background-color: rgba(127, 169, 140, .12);
}

.page-contact .body-text {
  font-size: .95rem;
  line-height: 1.8;
  margin: .9rem 0 0;
}

/* 用途边界 */

.page-contact .boundary-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.75rem;
  margin-top: 1.5rem;
}

.page-contact .mini-title {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .12em;
  font-weight: 400;
  color: var(--mortar-deep);
  margin: 0;
  padding-bottom: .5rem;
  border-bottom: 2px solid var(--mortar-deep);
}

.page-contact .tick-list,
.page-contact .cross-list {
  list-style: none;
  margin: .9rem 0 0;
  padding: 0;
}

.page-contact .tick-list li,
.page-contact .cross-list li {
  position: relative;
  padding-left: 1.4rem;
  margin-bottom: .65rem;
  font-size: .93rem;
  line-height: 1.7;
}

.page-contact .tick-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: .52rem;
  height: .52rem;
  background-color: var(--pitch);
}

.page-contact .cross-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1em;
  width: .65rem;
  height: 2px;
  background-color: var(--index-gray);
}

.page-contact .cross-list li {
  color: rgba(38, 37, 33, .72);
}

.page-contact .footnote {
  margin: 1.75rem 0 0;
  padding: .9rem 1.1rem;
  border-left: 3px solid var(--pitch-soft);
  background-color: rgba(127, 169, 140, .14);
  font-family: var(--font-mono);
  font-size: .78rem;
  line-height: 1.75;
  color: var(--mortar-deep);
}

/* 提交格式 */

.page-contact .spec-block {
  margin: 1.25rem 0 0;
  border: 2px solid var(--mortar-deep);
  background-color: var(--scoreboard);
  color: var(--mortar-light);
  font-family: var(--font-mono);
  font-size: clamp(.78rem, 1.9vw, .88rem);
  line-height: 1.65;
}

.page-contact .spec-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: .25rem;
  padding: .85rem 1rem;
  border-top: 1px dashed rgba(239, 235, 225, .24);
}

.page-contact .spec-row:first-child {
  border-top: 0;
}

.page-contact .spec-key {
  color: var(--pitch-soft);
  letter-spacing: .06em;
}

.page-contact .spec-val {
  color: var(--mortar-light);
}

.page-contact .spec-figure {
  margin: 1.5rem 0 0;
}

.page-contact .spec-figure .figure-frame__media {
  aspect-ratio: 2 / 1;
}

/* 响应时效 */

.page-contact .order-list {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
}

.page-contact .order-list > li {
  display: grid;
  grid-template-columns: 2.1rem minmax(0, 1fr);
  gap: .9rem;
  padding: 1.1rem 0;
  border-top: 1px solid var(--seam-dark);
}

.page-contact .order-list > li:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-contact .order-num {
  font-family: var(--font-mono);
  font-size: .82rem;
  letter-spacing: .04em;
  color: var(--pitch);
  padding-top: .18rem;
}

.page-contact .order-list h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  line-height: 1.4;
  letter-spacing: -.01em;
  margin: 0 0 .4rem;
}

.page-contact .order-list p {
  margin: 0;
  font-size: .92rem;
  line-height: 1.78;
}

/* ---------- 底部信息条 ---------- */

.page-contact .contact-meta {
  background-color: var(--mortar-deep);
  background-image: repeating-linear-gradient(
    to bottom,
    transparent 0 47px,
    rgba(239, 235, 225, .06) 47px 48px
  );
  color: var(--mortar-light);
  border-top: 3px solid var(--brick);
  padding: clamp(2.25rem, 5vw, 3.5rem) 0 clamp(2.5rem, 5vw, 4rem);
}

.page-contact .meta-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.75rem;
}

.page-contact .meta-label {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .12em;
  color: var(--pitch-soft);
  margin: 0 0 .55rem;
}

.page-contact .meta-value {
  font-family: var(--font-mono);
  font-size: clamp(.95rem, 2.3vw, 1.12rem);
  line-height: 1.5;
  margin: 0 0 .55rem;
  overflow-wrap: anywhere;
}

.page-contact .meta-note {
  font-size: .82rem;
  line-height: 1.72;
  color: rgba(239, 235, 225, .66);
  margin: 0;
}

.page-contact .leaf-links {
  margin-top: clamp(2rem, 5vw, 3rem);
  padding-top: 1.5rem;
  border-top: 1px solid var(--seam);
}

.page-contact .leaf-links ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: .7rem 1.5rem;
}

.page-contact .leaf-links a {
  font-family: var(--font-mono);
  font-size: .84rem;
  letter-spacing: .02em;
  color: var(--mortar-light);
  text-decoration: none;
  border-bottom: 1px solid var(--pitch);
  padding-bottom: 2px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .leaf-links a:hover,
.page-contact .leaf-links a:focus-visible {
  color: var(--pitch-soft);
  border-color: var(--pitch-soft);
}

/* ---------- 响应式 ---------- */

@media (min-width: 620px) {
  .page-contact .boundary-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 2rem;
  }

  .page-contact .spec-row {
    grid-template-columns: 8.5rem minmax(0, 1fr);
    gap: 1rem;
    align-items: baseline;
  }
}

@media (min-width: 760px) {
  .page-contact .meta-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 3rem;
  }
}

@media (min-width: 900px) {
  .page-contact .hero-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: clamp(2rem, 5vw, 4.5rem);
  }
}

@media (min-width: 960px) {
  .page-contact .sheet-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(2.5rem, 6vw, 5rem);
  }

  .page-contact .channel-panel {
    position: sticky;
    top: 6.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .jump-link,
  .page-contact .leaf-links a {
    transition: none;
  }

  .page-contact .jump-link:hover,
  .page-contact .jump-link:focus-visible {
    transform: none;
  }
}