.page-contact {
  --contact-pad: clamp(22px, 3vw, 38px);
  --contact-line: var(--moss);
  --contact-surface: rgba(10, 42, 32, 0.42);
  --contact-surface-strong: rgba(28, 87, 68, 0.5);
}

/* 面包屑与页面上下文 */
.page-contact .contact-crumb {
  padding-top: clamp(18px, 3vw, 34px);
}

.page-contact .breadcrumbs {
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-contact .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .breadcrumb-list a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 160ms ease-out, border-color 160ms ease-out;
}

.page-contact .breadcrumb-list a:hover,
.page-contact .breadcrumb-list a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* 首屏 */
.page-contact .contact-hero {
  padding-top: clamp(24px, 4vw, 48px);
}

.page-contact .contact-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: end;
}

.page-contact .contact-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(38px, 8vw, 68px);
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--bone);
  margin: 14px 0 0;
}

.page-contact .contact-lede {
  font-family: var(--font-body);
  font-size: clamp(17px, 2vw, 19px);
  line-height: 1.85;
  color: var(--bone);
  max-width: 34ch;
  margin: 20px 0 0;
}

.page-contact .contact-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 34px);
}

.page-contact .contact-hero-media {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

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

/* 联系方式卡片 */
.page-contact .contact-reach .section-head {
  margin-bottom: clamp(22px, 3vw, 36px);
}

.page-contact .reach-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3vw, 30px);
}

.page-contact .reach-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: var(--contact-pad);
  border-radius: var(--radius-lg);
  border: 1px solid var(--contact-line);
  background: linear-gradient(158deg, var(--contact-surface-strong), var(--contact-surface));
  transition: border-color 200ms ease-out, transform 200ms ease-out;
}

.page-contact .reach-card:hover,
.page-contact .reach-card:focus-within {
  border-color: var(--cyan);
  transform: translateY(-2px);
}

.page-contact .reach-value {
  font-family: var(--font-data);
  font-weight: 700;
  font-size: clamp(18px, 3.2vw, 30px);
  line-height: 1.25;
  letter-spacing: 0.01em;
  color: var(--cyan);
  margin: 0;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .reach-note {
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.8;
  color: var(--bone);
  margin: 0;
  max-width: 44ch;
}

/* 纠错步骤 */
.page-contact .fix-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 52px);
  align-items: start;
}

.page-contact .fix-copy h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 4vw, 42px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--bone);
  margin: 12px 0 0;
}

.page-contact .fix-intro {
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.85;
  color: var(--bone);
  max-width: 60ch;
  margin: 16px 0 0;
}

.page-contact .fix-steps {
  list-style: none;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .fix-step details {
  border: 1px solid var(--contact-line);
  border-radius: var(--radius-md);
  background: var(--contact-surface);
  padding: 2px clamp(16px, 2.4vw, 24px) 4px;
  transition: border-color 200ms ease-out, background 200ms ease-out;
}

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

.page-contact .fix-step details[open] {
  border-color: var(--cyan);
  background: var(--contact-surface-strong);
}

.page-contact .fix-step summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(16px, 2vw, 20px);
  letter-spacing: -0.01em;
  color: var(--bone);
}

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

.page-contact .fix-step summary::after {
  content: "＋";
  margin-left: auto;
  font-family: var(--font-data);
  font-size: 16px;
  color: var(--cyan);
}

.page-contact .fix-step details[open] summary::after {
  content: "−";
}

.page-contact .fix-idx {
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-contact .fix-step p {
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.8;
  color: var(--mist);
  margin: 0 0 16px;
  max-width: 62ch;
}

.page-contact .fix-media {
  margin: 0;
  aspect-ratio: 20 / 13;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.page-contact .fix-media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

/* 合作与投稿 */
.page-contact .contact-collab-grid {
  align-items: start;
  gap: clamp(20px, 3vw, 36px);
}

.page-contact .collab-index {
  border-left: 2px solid var(--cyan);
  padding-left: 14px;
}

.page-contact .collab-list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 0.01em;
  color: var(--bone);
}

.page-contact .collab-list .num {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan);
  margin-right: 8px;
}

.page-contact .collab-body h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 4vw, 40px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--bone);
  margin: 0 0 18px;
}

.page-contact .collab-body .prose {
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.85;
  color: var(--bone);
}

.page-contact .collab-body .prose a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--moss);
  transition: border-color 160ms ease-out;
}

.page-contact .collab-body .prose a:hover,
.page-contact .collab-body .prose a:focus-visible {
  border-bottom-color: var(--cyan);
}

.page-contact .collab-card {
  padding: var(--contact-pad);
  border-radius: var(--radius-lg);
  border: 1px solid var(--contact-line);
  background: var(--paper-green);
  color: var(--ink);
  transition: border-color 200ms ease-out, transform 200ms ease-out;
}

.page-contact .collab-card:hover {
  border-color: var(--cyan);
  transform: translateY(-2px);
}

.page-contact .collab-card .eyebrow {
  color: var(--ink-deep);
}

.page-contact .collab-keep {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 15px;
  letter-spacing: -0.01em;
  color: var(--ink-deep);
}

.page-contact .collab-keep li {
  padding-left: 16px;
  position: relative;
}

.page-contact .collab-keep li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 7px;
  height: 7px;
  border-radius: var(--pill);
  background: var(--orange);
}

.page-contact .collab-keep-note {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
  margin: 16px 0 0;
}

/* 地址与备案 */
.page-contact .office-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 34px);
  align-items: start;
  padding: var(--contact-pad);
  border-radius: var(--radius-lg);
  border: 1px solid var(--contact-line);
  background:
    radial-gradient(120% 140% at 100% 0%, rgba(54, 241, 205, 0.1), transparent 62%),
    var(--contact-surface-strong);
}

.page-contact .office-addr {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(20px, 3vw, 30px);
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: var(--bone);
  margin: 12px 0 0;
}

.page-contact .office-note {
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.8;
  color: var(--mist);
  margin: 14px 0 0;
  max-width: 52ch;
}

.page-contact .office-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-content: flex-start;
}

/* 常见问题快捷入口 */
.page-contact .contact-faq .section-head {
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-contact .faq-chips {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-contact .faq-chip {
  display: inline-block;
  text-decoration: none;
  font-size: 14px;
  letter-spacing: 0.01em;
  padding: 10px 18px;
  transition: border-color 140ms ease-out, color 140ms ease-out, background 140ms ease-out;
}

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

/* 键盘可达性 */
.page-contact a:focus-visible,
.page-contact summary:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
}

/* 响应式 */
@media (min-width: 720px) {
  .page-contact .reach-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .reach-card--phone {
    margin-top: 34px;
  }

  .page-contact .office-card {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-contact .office-tags {
    justify-content: flex-end;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 7fr);
  }

  .page-contact .contact-hero-media {
    transform: translateY(10px);
  }
}

@media (min-width: 1000px) {
  .page-contact .fix-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-contact .fix-media {
    margin-top: clamp(38px, 5vw, 72px);
  }
}

@media (max-width: 719px) {
  .page-contact .collab-index {
    border-left-width: 2px;
  }

  .page-contact .reach-value {
    font-size: 17px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .reach-card,
  .page-contact .collab-card,
  .page-contact .faq-chip,
  .page-contact .fix-step details {
    transition: none;
  }

  .page-contact .reach-card:hover,
  .page-contact .collab-card:hover {
    transform: none;
  }
}