.page-contact {
  display: block;
  color: var(--white);
}

.page-contact .breadcrumb {
  padding-top: clamp(20px, 3vw, 28px);
}

.page-contact .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--steel);
}

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

.page-contact .breadcrumb-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--ease);
}

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

.page-contact .breadcrumb-current {
  color: var(--steel);
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  position: relative;
  padding-block: clamp(32px, 6vw, 64px) clamp(24px, 3.5vw, 40px);
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: clamp(64px, 12vw, 148px);
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--orange));
}

.page-contact .contact-hero .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-contact .contact-hero h1 {
  margin: 14px 0 18px;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(28px, 5.4vw, 52px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  max-width: 24ch;
}

.page-contact .lede {
  max-width: 62ch;
  margin: 0;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.75;
  color: var(--steel);
}

/* ---------- 左右分屏 ---------- */

.page-contact .contact-main {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 40px);
  padding-block: clamp(32px, 5vw, 56px);
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-main__aside,
.page-contact .contact-main__body {
  min-width: 0;
}

.page-contact .contact-main__body {
  display: grid;
  gap: clamp(28px, 4vw, 44px);
}

.page-contact .contact-media,
.page-contact .contact-flow-figure {
  margin: 0 0 clamp(20px, 3vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--deck);
  overflow: hidden;
}

.page-contact .contact-media__img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-contact .media-caption {
  margin: 0;
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  line-height: 1.6;
  color: var(--steel);
}

/* ---------- 通道卡片 ---------- */

.page-contact .channel-list {
  display: grid;
  gap: 12px;
}

.page-contact .channel {
  position: relative;
  padding: 18px 18px 18px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--deck);
  transition: border-color var(--ease), background-color var(--ease);
}

.page-contact .channel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  bottom: 14px;
  width: 2px;
  background: var(--line);
  transition: background-color var(--ease);
}

.page-contact .channel:hover,
.page-contact .channel:focus-within {
  border-color: var(--cyan);
  background: #102743;
}

.page-contact .channel:hover::before,
.page-contact .channel:focus-within::before {
  background: var(--cyan);
}

.page-contact .channel-label {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-contact .channel-value {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: clamp(18px, 2.4vw, 22px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--white);
  word-break: break-word;
}

.page-contact .channel-value--mail {
  font-size: clamp(13px, 1.9vw, 16px);
  letter-spacing: 0;
}

.page-contact .channel-window {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--signal);
}

.page-contact .channel-body {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--steel);
}

/* ---------- 合作类型 ---------- */

.page-contact .chapter-num {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-contact .section-title {
  margin: 0 0 14px;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(22px, 3.2vw, 32px);
  line-height: 1.25;
  letter-spacing: -0.01em;
  max-width: 22ch;
}

.page-contact .prose {
  max-width: 68ch;
  margin: 0 0 20px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--steel);
}

.page-contact .coop-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-contact .coop-item {
  background: var(--deck);
  padding: clamp(18px, 2.6vw, 26px);
  transition: background-color var(--ease);
}

.page-contact .coop-item:hover {
  background: #102743;
}

.page-contact .coop-title {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 700;
  color: var(--white);
}

.page-contact .coop-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--steel);
}

/* ---------- 流程 ---------- */

.page-contact .flow-section {
  padding-block: clamp(36px, 6vw, 72px);
  border-bottom: 1px solid var(--line);
}

.page-contact .flow {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-contact .flow-step {
  position: relative;
  background: var(--deck);
  padding: clamp(20px, 2.6vw, 26px) clamp(16px, 2.2vw, 22px);
  transition: background-color var(--ease);
}

.page-contact .flow-step:hover {
  background: #102743;
}

.page-contact .flow-num {
  display: block;
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-contact .flow-dot {
  position: absolute;
  top: 24px;
  right: 20px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--signal);
  transition: transform var(--ease), box-shadow var(--ease);
}

.page-contact .flow-step:hover .flow-dot,
.page-contact .flow-step:focus-within .flow-dot {
  transform: scale(1.5);
  box-shadow: 0 0 0 4px rgba(255, 194, 75, 0.18);
}

.page-contact .flow-title {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
  padding-right: 20px;
}

.page-contact .flow-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--steel);
}

.page-contact .flow-time {
  margin: 14px 0 0;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--signal);
}

.page-contact .contact-flow-figure {
  max-width: 720px;
  margin: clamp(24px, 4vw, 36px) 0 0;
}

/* ---------- 到访 ---------- */

.page-contact .visit-section {
  padding-block: clamp(36px, 6vw, 72px);
  border-bottom: 1px solid var(--line);
}

.page-contact .paper-block.visit {
  position: relative;
  padding: clamp(24px, 4vw, 48px);
  border: 1px solid #D9CBB4;
  border-radius: var(--radius);
  color: var(--paper-ink);
  background-color: var(--paper);
  background-image:
    linear-gradient(to right, rgba(25, 20, 16, 0.055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(25, 20, 16, 0.055) 1px, transparent 1px);
  background-size: 24px 24px;
}

.page-contact .paper-block.visit .chapter-num {
  color: #A8480F;
}

.page-contact .visit-title {
  color: var(--paper-ink);
}

.page-contact .visit-text {
  max-width: 66ch;
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.82;
  color: #33291F;
}

.page-contact .visit-details {
  margin-top: 22px;
  padding-top: 14px;
  border-top: 1px solid rgba(25, 20, 16, 0.2);
}

.page-contact .visit-details summary {
  display: flex;
  align-items: center;
  min-height: 44px;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: #7A3D12;
}

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

.page-contact .visit-details summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: #7A3D12;
}

.page-contact .visit-details[open] summary::after {
  content: "\2212";
}

.page-contact .visit-details summary:focus-visible {
  outline: 2px solid #191410;
  outline-offset: 3px;
}

.page-contact .visit-list {
  display: grid;
  gap: 10px;
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .visit-list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.7;
  color: #33291F;
}

.page-contact .visit-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  background: var(--orange);
}

/* ---------- 自助引导 ---------- */

.page-contact .selfhelp {
  padding-block: clamp(36px, 6vw, 72px) clamp(16px, 3vw, 32px);
}

.page-contact .selfhelp-inner {
  padding: clamp(24px, 4vw, 40px);
  border: 1px solid var(--line);
  border-left: 2px solid var(--cyan);
  border-radius: var(--radius);
  background: linear-gradient(140deg, #0E2135 0%, #071322 72%);
}

.page-contact .selfhelp-inner .prose {
  margin-bottom: 22px;
}

.page-contact .selfhelp-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
}

.page-contact .selfhelp-actions .link-arrow {
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 3px;
  transition: border-color var(--ease), color var(--ease);
}

.page-contact .selfhelp-actions .link-arrow:hover,
.page-contact .selfhelp-actions .link-arrow:focus-visible {
  color: var(--white);
  border-bottom-color: var(--cyan);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-contact .coop-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-contact .flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-contact .contact-main {
    grid-template-columns: minmax(0, 34fr) minmax(0, 66fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel,
  .page-contact .channel::before,
  .page-contact .coop-item,
  .page-contact .flow-step,
  .page-contact .flow-dot,
  .page-contact .breadcrumb-link,
  .page-contact .selfhelp-actions .link-arrow {
    transition: none;
  }

  .page-contact .flow-step:hover .flow-dot,
  .page-contact .flow-step:focus-within .flow-dot {
    transform: none;
    box-shadow: none;
  }
}