.page-contact {
  background: var(--paper);
  color: var(--text);
  overflow-x: hidden;
}

/* ===== 首屏 ===== */
.page-contact .contact-hero {
  position: relative;
  padding: calc(var(--header-h) + 20px) 0 0;
  background: linear-gradient(165deg, var(--paper) 0%, var(--sand) 100%);
}

.page-contact .contact-hero__grid {
  display: grid;
  gap: calc(var(--gap) * 4);
  align-items: center;
  padding-bottom: calc(var(--gap) * 7);
}

.page-contact .contact-hero .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--rock);
}

.page-contact .contact-hero .breadcrumb-list a {
  color: var(--blue-600);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-contact .contact-hero .breadcrumb-list a:hover {
  border-bottom-color: var(--orange);
}

.page-contact .contact-hero .breadcrumb-list li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--line-strong);
}

.page-contact .contact-hero h1 {
  max-width: 18ch;
  margin: 10px 0 16px;
  overflow-wrap: anywhere;
}

.page-contact .contact-hero .lede {
  max-width: 46ch;
  margin: 0 0 24px;
  font-size: 17px;
  line-height: 1.75;
  color: var(--text);
}

.page-contact .quick-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 26px;
  padding: 0;
  list-style: none;
}

.page-contact .quick-links a {
  display: inline-block;
  padding: 8px 16px;
  border: 1px solid var(--line-strong);
  border-radius: var(--pill);
  font-size: 14px;
  color: var(--text);
  text-decoration: none;
  transition: border-color 160ms var(--ease), color 160ms var(--ease);
}

.page-contact .quick-links a:hover,
.page-contact .quick-links a:focus-visible {
  border-color: var(--orange);
  color: var(--blue-600);
}

.page-contact .hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  margin: 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--line);
  list-style: none;
  font-size: 14px;
  line-height: 1.5;
  color: var(--rock);
}

.page-contact .hero-facts .data-num {
  display: inline-block;
  margin-right: 4px;
  font-family: var(--mono);
  font-size: 22px;
  font-weight: 700;
  color: var(--ink-800);
}

.page-contact .contact-hero__media {
  margin: 0;
  padding: 10px;
  background: var(--ink-800);
  clip-path: polygon(0 0, 100% 0, 100% 88%, 88% 100%, 0 100%);
  transition: transform 200ms var(--ease);
}

.page-contact .contact-hero__media:hover {
  transform: translateY(-4px);
}

.page-contact .contact-hero__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.05);
}

.page-contact .contact-slant {
  height: 44px;
  background: var(--ink-800);
  clip-path: polygon(0 100%, 100% 0, 100% 100%);
}

/* ===== 两栏主体 ===== */
.page-contact .contact-main {
  padding: calc(var(--gap) * 8) 0 calc(var(--gap) * 7);
}

.page-contact .contact-split {
  display: grid;
  gap: calc(var(--gap) * 6);
}

.page-contact .contact-split h2 {
  max-width: 24ch;
  margin: 0 0 8px;
}

/* 四类方向 */
.page-contact .direction-list {
  margin: calc(var(--gap) * 3) 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .direction-item {
  padding: 20px 0 20px 20px;
  border-left: 2px solid var(--line-strong);
  transition: border-color 160ms var(--ease), padding-left 160ms var(--ease),
    background 160ms var(--ease);
}

.page-contact .direction-item:hover,
.page-contact .direction-item:focus-within {
  border-left-color: var(--orange);
  padding-left: 26px;
  background: linear-gradient(90deg, rgba(255, 106, 43, 0.09), transparent 72%);
}

.page-contact .direction-num {
  display: block;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-contact .direction-item h3 {
  margin: 6px 0 8px;
  font-size: 20px;
  line-height: 1.3;
  font-weight: 800;
}

.page-contact .direction-item p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text);
}

.page-contact .direction-item .tag {
  display: inline-block;
  padding: 3px 9px;
  border: 1px solid var(--line);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--blue-600);
}

/* 流程 */
.page-contact .process-list {
  margin: calc(var(--gap) * 3) 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .process-step {
  position: relative;
  padding-left: 62px;
  padding-bottom: 26px;
}

.page-contact .process-step:last-child {
  padding-bottom: 0;
}

.page-contact .process-step::before {
  content: "";
  position: absolute;
  left: 20px;
  top: 46px;
  bottom: 0;
  width: 1px;
  background: var(--line-strong);
}

.page-contact .process-step:last-child::before {
  content: none;
}

.page-contact .step-num {
  position: absolute;
  left: 0;
  top: 0;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--orange);
  background: var(--paper);
  border: 1px solid rgba(255, 106, 43, 0.55);
  clip-path: polygon(0 0, 100% 0, 100% 76%, 76% 100%, 0 100%);
}

.page-contact .process-step details {
  padding: 2px 0 0;
}

.page-contact .process-step summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px 14px;
  list-style: none;
  cursor: pointer;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text);
}

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

.page-contact .summary-hint {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--blue-600);
  border-bottom: 1px solid currentColor;
  padding-bottom: 2px;
  white-space: nowrap;
}

.page-contact .process-step details[open] .summary-hint {
  color: var(--orange);
}

.page-contact .step-body {
  margin-top: 10px;
  font-size: 15px;
  line-height: 1.75;
}

.page-contact .step-body p {
  margin: 0 0 8px;
}

.page-contact .step-body ul {
  margin: 8px 0 0;
  padding-left: 18px;
  color: var(--rock);
}

.page-contact .step-body li {
  margin-bottom: 4px;
}

.page-contact .step-meta {
  display: block;
  margin-top: 12px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--blue-600);
}

.page-contact .process-figure {
  margin: calc(var(--gap) * 4) 0 0;
  padding: 8px;
  background: var(--ink-800);
  border: 1px solid var(--line-strong);
}

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

/* ===== 内容共建 ===== */
.page-contact .contact-build {
  padding: calc(var(--gap) * 7) 0;
  background: var(--sand);
}

.page-contact .build-head h2 {
  max-width: 22ch;
  margin: 8px 0 16px;
}

.page-contact .build-head .prose {
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.8;
}

.page-contact .build-grid {
  display: grid;
  gap: 16px;
  margin-top: calc(var(--gap) * 4);
}

.page-contact .build-card {
  padding: 22px 20px;
  background: var(--paper);
  border: 1px solid var(--line);
  clip-path: var(--cut);
  transition: transform 180ms var(--ease), border-color 180ms var(--ease);
}

.page-contact .build-card:hover {
  transform: translateY(-4px);
  border-color: var(--orange);
}

.page-contact .build-label {
  display: inline-block;
  margin-bottom: 10px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--clay);
}

.page-contact .build-card h3 {
  margin: 0 0 8px;
  font-size: 18px;
  line-height: 1.35;
  font-weight: 800;
}

.page-contact .build-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text);
}

/* ===== 使用咨询 ===== */
.page-contact .contact-ask {
  padding: calc(var(--gap) * 8) 0;
}

.page-contact .ask-grid {
  display: grid;
  gap: calc(var(--gap) * 4);
}

.page-contact .ask-lead h2 {
  max-width: 16ch;
  margin: 8px 0 14px;
}

.page-contact .ask-lead .prose {
  max-width: 40ch;
  font-size: 16px;
  line-height: 1.8;
}

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

.page-contact .ask-list li {
  display: grid;
  grid-template-columns: minmax(64px, auto) 1fr;
  gap: 12px;
  align-items: start;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
  line-height: 1.75;
}

.page-contact .ask-list .ask-k {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--orange);
  padding-top: 4px;
}

.page-contact .ask-note {
  margin: 20px 0 0;
  padding: 14px 16px;
  border-left: 3px solid var(--orange);
  background: var(--sand);
  font-size: 14px;
  line-height: 1.75;
  color: var(--text);
}

/* ===== 联系方式面板 ===== */
.page-contact .contact-channels {
  padding: 0 0 calc(var(--gap) * 8);
}

.page-contact .contact-panel {
  position: relative;
  padding: 30px 22px 26px;
  background:
    radial-gradient(circle at 88% 8%, rgba(31, 95, 168, 0.55), transparent 58%),
    var(--ink-900);
  border: 1px solid rgba(255, 106, 43, 0.5);
  clip-path: var(--cut);
  transition: transform 200ms var(--ease), border-color 200ms var(--ease);
}

.page-contact .contact-panel:hover {
  transform: translateY(-4px);
  border-color: var(--orange);
}

.page-contact .panel-eyebrow {
  margin: 0;
  color: var(--orange-soft);
}

.page-contact .contact-panel h2 {
  max-width: 20ch;
  margin: 8px 0 24px;
  color: var(--paper);
}

.page-contact .contact-panel__grid {
  display: grid;
  gap: 20px;
}

.page-contact .contact-item {
  padding-top: 14px;
  border-top: 1px solid var(--line-light);
}

.page-contact .contact-item__label {
  display: block;
  margin-bottom: 8px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--paper-dim);
}

.page-contact .contact-item__value {
  display: block;
  font-family: var(--mono);
  font-size: clamp(15px, 3.6vw, 20px);
  font-weight: 700;
  line-height: 1.5;
  color: var(--paper);
  word-break: break-word;
}

.page-contact .contact-item__value:first-of-type {
  overflow-wrap: anywhere;
}

.page-contact .contact-item--addr .contact-item__value {
  font-family: var(--sans);
  font-size: 16px;
  letter-spacing: 0.01em;
}

.page-contact .contact-item__desc {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--paper-dim);
}

.page-contact .panel-note {
  margin: 24px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line-light);
  font-size: 14px;
  line-height: 1.8;
  color: var(--paper-dim);
}

/* ===== 后续入口 ===== */
.page-contact .contact-next {
  padding: 0 0 calc(var(--gap) * 9);
}

.page-contact .contact-next h2 {
  max-width: 22ch;
  margin: 0 0 8px;
}

.page-contact .next-grid {
  display: grid;
  gap: 0;
  margin-top: calc(var(--gap) * 2);
}

.page-contact .next-link {
  display: block;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  color: var(--text);
  transition: padding-left 160ms var(--ease), border-color 160ms var(--ease);
}

.page-contact .next-link:hover,
.page-contact .next-link:focus-visible {
  padding-left: 10px;
  border-bottom-color: var(--orange);
}

.page-contact .next-title {
  display: block;
  font-size: 17px;
  font-weight: 800;
  margin-bottom: 4px;
}

.page-contact .next-desc {
  display: block;
  font-size: 14px;
  line-height: 1.7;
  color: var(--rock);
}

.page-contact .contact-totop {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: calc(var(--gap) * 4);
  padding: 10px 20px;
  border: 1px solid var(--line-strong);
  border-radius: var(--pill);
  font-size: 14px;
  color: var(--text);
  text-decoration: none;
  transition: border-color 160ms var(--ease);
}

.page-contact .contact-totop::before {
  content: "↑";
  font-family: var(--mono);
  color: var(--orange);
}

.page-contact .contact-totop:hover,
.page-contact .contact-totop:focus-visible {
  border-color: var(--orange);
}

/* ===== 响应式 ===== */
@media (min-width: 600px) {
  .page-contact .build-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .page-contact .build-card:nth-child(2) {
    margin-top: 28px;
  }

  .page-contact .next-grid {
    grid-template-columns: repeat(2, 1fr);
    column-gap: 32px;
  }

  .page-contact .contact-panel__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 22px 28px;
  }

  .page-contact .contact-panel {
    padding: 38px 32px 32px;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: 7fr 5fr;
    gap: calc(var(--gap) * 6);
    padding-bottom: calc(var(--gap) * 10);
  }

  .page-contact .contact-hero .lede {
    font-size: 18px;
  }

  .page-contact .contact-split {
    grid-template-columns: 5fr 7fr;
    gap: calc(var(--gap) * 8);
    align-items: start;
  }

  .page-contact .ask-grid {
    grid-template-columns: 4fr 8fr;
    gap: calc(var(--gap) * 6);
    align-items: start;
  }

  .page-contact .build-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .page-contact .build-card:nth-child(2) {
    margin-top: 44px;
  }

  .page-contact .build-card:nth-child(3) {
    margin-top: 16px;
  }

  .page-contact .contact-panel__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-contact .contact-panel {
    padding: 44px 40px 36px;
  }
}

@media (min-width: 1180px) {
  .page-contact .contact-hero h1 {
    max-width: 16ch;
  }

  .page-contact .direction-item {
    padding-top: 24px;
    padding-bottom: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-hero__media,
  .page-contact .contact-panel,
  .page-contact .build-card,
  .page-contact .next-link,
  .page-contact .direction-item {
    transition: none;
  }

  .page-contact .contact-hero__media:hover,
  .page-contact .contact-panel:hover,
  .page-contact .build-card:hover {
    transform: none;
  }
}