.page-contact {
  --pc-block-gap: clamp(2.6rem, 6vw, 5rem);
  --pc-sticky-top: calc(var(--header-h) + 1.5rem);
  padding-block: clamp(1.6rem, 4vw, 3rem) clamp(3rem, 7vw, 5rem);
  color: var(--text-primary);
}

.page-contact .breadcrumb {
  margin-bottom: clamp(1.6rem, 4vw, 2.6rem);
}

.page-contact h2,
.page-contact h3 {
  font-family: var(--font-heading);
}

/* ---------- 两栏骨架 ---------- */
.page-contact .contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 3.4rem);
  align-items: start;
}

.page-contact .contact-aside {
  order: 2;
  display: grid;
  gap: 1rem;
  align-content: start;
  min-width: 0;
}

.page-contact .contact-flow {
  order: 1;
  display: grid;
  gap: var(--pc-block-gap);
  min-width: 0;
}

@media (min-width: 960px) {
  .page-contact .contact-layout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(2.4rem, 6vw, 5.5rem);
  }

  .page-contact .contact-aside {
    order: 0;
    position: sticky;
    top: var(--pc-sticky-top);
    align-self: start;
  }

  .page-contact .contact-flow {
    order: 0;
  }
}

/* ---------- 左侧铭牌 ---------- */
.page-contact .contact-photo {
  position: relative;
  display: block;
  padding: 0;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  background: var(--ink-800);
  border: 1px solid var(--grid-500);
}

.page-contact .contact-photo img {
  position: static;
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  object-position: center;
}

@media (max-width: 959.98px) {
  .page-contact .contact-photo {
    aspect-ratio: 16 / 9;
    max-height: 320px;
  }
}

.page-contact .contact-plate {
  border: 1px solid var(--grid-500);
  background: var(--ink-800);
  padding: clamp(1.1rem, 3vw, 1.6rem);
}

.page-contact .plate-title {
  margin: 0 0 .9rem;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--lime);
}

.page-contact .contact-plate .contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .contact-plate .contact-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: .15rem;
  padding: .8rem 0;
  border-top: 1px solid var(--grid-500);
}

.page-contact .contact-plate .contact-item:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-contact .contact-plate .contact-key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--text-muted);
}

.page-contact .contact-plate .contact-value {
  font-size: 1rem;
  line-height: 1.5;
  color: var(--text-primary);
  overflow-wrap: anywhere;
}

.page-contact .contact-plate .copy-btn {
  justify-self: start;
  margin-top: .45rem;
}

.page-contact .plate-note {
  margin: 1rem 0 0;
  padding-top: .9rem;
  border-top: 1px solid var(--grid-500);
  font-size: .82rem;
  line-height: 1.6;
  color: var(--text-muted);
}

/* ---------- 右栏首屏 ---------- */
.page-contact .contact-intro {
  display: grid;
  gap: .9rem;
}

.page-contact .contact-intro .section-mark {
  margin: 0;
}

.page-contact .contact-intro h1 {
  margin: 0;
  font-family: var(--font-heading);
  font-size: clamp(1.9rem, 5.4vw, 3.3rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  font-weight: 900;
}

.page-contact .intro-lead {
  margin: 0;
  max-width: 62ch;
  font-size: clamp(1.02rem, 2vw, 1.18rem);
  line-height: 1.6;
}

.page-contact .intro-body {
  margin: 0;
  max-width: 62ch;
  font-size: .98rem;
  line-height: 1.65;
  color: var(--text-muted);
}

.page-contact .intro-stats {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
  margin-top: .6rem;
  padding-top: 1.3rem;
  border-top: 1px solid var(--grid-500);
}

@media (min-width: 620px) {
  .page-contact .intro-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.6rem;
  }
}

.page-contact .intro-stat {
  display: flex;
  flex-direction: column;
  gap: .3rem;
  min-width: 0;
}

.page-contact .intro-stat .stat-number {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 3.5rem);
  font-weight: 700;
  line-height: .9;
  letter-spacing: -0.01em;
  color: var(--lime);
}

.page-contact .intro-stat .stat-label {
  font-size: .84rem;
  line-height: 1.55;
  color: var(--text-muted);
}

.page-contact .intro-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  margin: .5rem 0 0;
}

/* ---------- 章节通用 ---------- */
.page-contact .section-head {
  max-width: 68ch;
}

.page-contact .section-head h2 {
  margin: 0 0 .55rem;
  font-size: clamp(1.45rem, 3.6vw, 2.05rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  font-weight: 900;
}

.page-contact .section-head p {
  margin: 0;
  font-size: .95rem;
  line-height: 1.65;
  color: var(--text-muted);
}

/* ---------- 合作方向 ---------- */
.page-contact .direction-visual {
  position: relative;
  display: block;
  padding: 0;
  margin: clamp(1.4rem, 3.5vw, 2.2rem) 0;
  aspect-ratio: 2 / 1;
  overflow: hidden;
  background: var(--ink-800);
  border: 1px solid var(--grid-500);
}

.page-contact .direction-visual img {
  position: static;
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-contact .direction-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--grid-500);
  border: 1px solid var(--grid-500);
}

@media (min-width: 700px) {
  .page-contact .direction-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-contact .direction-card {
  display: flex;
  flex-direction: column;
  gap: .7rem;
  padding: clamp(1.2rem, 3vw, 1.8rem);
  background: var(--ink-900);
  min-width: 0;
  transition: background var(--t-base) var(--ease);
}

.page-contact .direction-card:hover,
.page-contact .direction-card:focus-within {
  background: var(--ink-700);
}

.page-contact .direction-tag {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--lime);
}

.page-contact .direction-tag::before {
  content: "";
  width: 18px;
  height: 1px;
  background: var(--lime);
  flex: none;
}

.page-contact .direction-card h3 {
  margin: 0;
  font-size: 1.12rem;
  line-height: 1.35;
  letter-spacing: -0.01em;
  font-weight: 700;
}

.page-contact .direction-card > p {
  margin: 0;
  font-size: .92rem;
  line-height: 1.62;
  color: var(--text-muted);
}

.page-contact .direction-meta {
  display: grid;
  grid-template-columns: 4.5rem minmax(0, 1fr);
  gap: .55rem .8rem;
  margin: auto 0 0;
  padding-top: .9rem;
  border-top: 1px solid var(--grid-500);
  font-size: .86rem;
}

.page-contact .direction-meta dt {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.55;
  color: var(--text-muted);
}

.page-contact .direction-meta dd {
  margin: 0;
  line-height: 1.55;
  color: var(--text-primary);
}

/* ---------- 四步流程 ---------- */
.page-contact .step-list {
  list-style: none;
  margin: clamp(1.4rem, 3.5vw, 2.2rem) 0 0;
  padding: 0;
  border-top: 1px solid var(--grid-500);
}

.page-contact .step-list > li {
  border-bottom: 1px solid var(--grid-500);
}

.page-contact .step {
  transition: background var(--t-base) var(--ease);
}

.page-contact .step[open] {
  background: var(--ink-800);
}

.page-contact .step summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: .3rem 1.1rem;
  align-items: start;
  padding: clamp(1.1rem, 3vw, 1.6rem) clamp(.7rem, 2vw, 1.2rem);
  cursor: pointer;
  list-style: none;
}

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

.page-contact .step summary:hover .step-title {
  color: var(--lime);
}

.page-contact .step-num {
  grid-column: 1;
  grid-row: 1 / span 2;
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 7vw, 4.5rem);
  font-weight: 700;
  line-height: .82;
  letter-spacing: -0.02em;
  color: var(--lime);
}

.page-contact .step-title {
  grid-column: 2;
  grid-row: 1;
  margin: 0;
  font-size: 1.1rem;
  line-height: 1.35;
  font-weight: 700;
  transition: color var(--t-base) var(--ease);
}

.page-contact .step-desc {
  grid-column: 2;
  grid-row: 2;
  margin: .2rem 0 0;
  font-size: .9rem;
  line-height: 1.62;
  color: var(--text-muted);
}

.page-contact .step-toggle {
  grid-column: 2;
  grid-row: 3;
  justify-self: start;
  margin-top: .35rem;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--text-muted);
}

.page-contact .step-toggle::after {
  content: "＋";
  margin-left: .4rem;
  color: var(--lime);
}

.page-contact .step[open] .step-toggle::after {
  content: "－";
}

@media (min-width: 760px) {
  .page-contact .step summary {
    align-items: baseline;
  }

  .page-contact .step-toggle {
    grid-column: 3;
    grid-row: 1 / span 2;
    align-self: center;
    margin-top: 0;
    white-space: nowrap;
  }
}

.page-contact .step-deliverables {
  list-style: none;
  margin: 0;
  padding: 0 clamp(1rem, 2.4vw, 1.4rem) clamp(1.2rem, 3vw, 1.6rem) clamp(1rem, 7vw, 5.6rem);
}

.page-contact .step-deliverables li {
  position: relative;
  padding: .3rem 0 .3rem 1.1rem;
  font-size: .88rem;
  line-height: 1.6;
  color: var(--text-muted);
}

.page-contact .step-deliverables li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.05rem;
  width: .6rem;
  height: 1px;
  background: var(--lime);
}

/* ---------- 浅色准备清单 ---------- */
.page-contact .prep-panel {
  background: var(--paper);
  color: var(--ink-paper);
  padding: clamp(1.5rem, 4vw, 2.6rem);
  border: 1px solid var(--paper-2);
}

.page-contact .section-head--paper h2 {
  color: var(--ink-paper);
}

.page-contact .section-head--paper p {
  color: rgba(10, 14, 11, .72);
}

.page-contact .prep-grid {
  list-style: none;
  margin: clamp(1.3rem, 3.5vw, 2rem) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.4rem;
}

@media (min-width: 720px) {
  .page-contact .prep-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(1.4rem, 3vw, 2.4rem);
  }
}

.page-contact .prep-item {
  min-width: 0;
  padding-top: .9rem;
  border-top: 2px solid var(--ink-paper);
}

.page-contact .prep-num {
  margin: 0 0 .6rem;
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 700;
  line-height: .9;
  color: var(--ink-paper);
}

.page-contact .prep-item h3 {
  margin: 0 0 .45rem;
  font-size: 1.02rem;
  line-height: 1.4;
  font-weight: 700;
  color: var(--ink-paper);
}

.page-contact .prep-item p {
  margin: 0;
  font-size: .9rem;
  line-height: 1.62;
  color: rgba(10, 14, 11, .74);
}

/* ---------- 常见提问 ---------- */
.page-contact .faq-list {
  margin-top: clamp(1.3rem, 3.5vw, 2rem);
  border-top: 1px solid var(--grid-500);
}

.page-contact .faq-item {
  border-bottom: 1px solid var(--grid-500);
}

.page-contact .faq-item summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.05rem .2rem;
  cursor: pointer;
  list-style: none;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.5;
  transition: color var(--t-base) var(--ease);
}

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

.page-contact .faq-item summary:hover {
  color: var(--lime);
}

.page-contact .faq-item summary::after {
  content: "＋";
  flex: none;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--lime);
}

.page-contact .faq-item[open] summary::after {
  content: "－";
}

.page-contact .faq-item p {
  margin: 0 0 1.2rem;
  max-width: 62ch;
  padding-right: 1.6rem;
  font-size: .92rem;
  line-height: 1.68;
  color: var(--text-muted);
}

.page-contact .closing-note {
  margin: clamp(1.6rem, 4vw, 2.4rem) 0 0;
  max-width: 68ch;
  font-size: .92rem;
  line-height: 1.7;
  color: var(--text-muted);
}

.page-contact .closing-note a {
  color: var(--lime);
  text-decoration: underline;
  text-underline-offset: 3px;
}
</final>