.page-contact {
  --pc-rule: rgba(42, 74, 63, 0.62);
  --pc-panel-hi: #1b3f33;
  background: var(--ink);
  color: var(--fog);
}

.page-contact .breadcrumb {
  padding-top: 22px;
}

/* hero */
.page-contact .contact-hero {
  position: relative;
  padding: clamp(20px, 3.5vw, 44px) 0 clamp(36px, 5.5vw, 68px);
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), var(--amber) 52%, transparent 88%);
  opacity: 0.55;
}

.page-contact .contact-hero-inner {
  display: grid;
  gap: 30px;
  align-items: center;
}

.page-contact .contact-hero h1 {
  margin: 0 0 18px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(31px, 5.2vw, 58px);
  line-height: 1.14;
  letter-spacing: 0.02em;
  color: var(--fog);
  max-width: 22ch;
}

.page-contact .contact-hero .lede {
  margin: 0 0 22px;
  max-width: 60ch;
  font-size: clamp(15px, 1.35vw, 17px);
  line-height: 1.78;
  color: var(--pale);
}

.page-contact .hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .hero-points li {
  padding: 6px 11px;
  background: var(--ink-2);
  border: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--cyan);
  word-break: break-all;
}

.page-contact .hero-points li:last-child {
  color: var(--amber);
}

.page-contact .contact-hero-media {
  min-width: 0;
}

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

/* 左右分栏 */
.page-contact .contact-split {
  display: grid;
  gap: 46px;
  padding: clamp(38px, 5.5vw, 68px) 0 clamp(52px, 7vw, 92px);
}

.page-contact .contact-main {
  display: grid;
  gap: clamp(42px, 6vw, 66px);
  min-width: 0;
}

.page-contact .contact-h2 {
  margin: 0 0 12px;
  padding-left: 14px;
  border-left: 4px solid var(--cyan);
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(22px, 3vw, 31px);
  line-height: 1.26;
  letter-spacing: 0.02em;
  color: var(--fog);
}

.page-contact .block-lede {
  margin: 0 0 24px;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

/* 通道卡片 */
.page-contact .channels {
  display: grid;
  gap: 14px;
}

.page-contact .channel-card {
  display: grid;
  gap: 10px;
  align-content: start;
  min-width: 0;
  padding: 22px 20px;
  background: var(--panel);
  border-left: 3px solid var(--cyan);
  transition: background 0.22s ease;
}

.page-contact .channel-card--call {
  border-left-color: var(--amber);
}

.page-contact .channel-card:hover {
  background: var(--pc-panel-hi);
}

.page-contact .channel-tag {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.page-contact .channel-card--call .channel-tag {
  color: var(--amber);
}

.page-contact .channel-value {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(17px, 2.4vw, 22px);
  line-height: 1.35;
  letter-spacing: 0.01em;
  color: var(--fog);
  word-break: break-all;
}

.page-contact .channel-text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--pale);
}

.page-contact .channel-note {
  margin: 0;
  padding-top: 10px;
  border-top: 1px solid var(--pc-rule);
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

/* 准备清单 */
.page-contact .prep-list {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--grid);
  border-top: 1px solid var(--grid);
  border-bottom: 1px solid var(--grid);
}

.page-contact .prep-item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 18px 14px;
  background: var(--ink);
  transition: background 0.2s ease;
}

.page-contact .prep-item:hover {
  background: var(--ink-2);
}

.page-contact .prep-idx {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.4;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-contact .prep-title {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--fog);
}

.page-contact .prep-item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

/* 四象限 */
.page-contact .quad {
  display: grid;
  gap: 1px;
  background: var(--grid);
  border: 1px solid var(--grid);
}

.page-contact .quad-cell {
  display: grid;
  gap: 10px;
  align-content: start;
  min-width: 0;
  padding: 22px 20px;
  background: var(--ink-2);
  outline: none;
  transition: background 0.22s ease;
}

.page-contact .quad-cell:hover,
.page-contact .quad-cell:focus-within {
  background: var(--panel);
}

.page-contact .quad-cell:focus-visible {
  box-shadow: inset 0 0 0 2px var(--cyan);
}

.page-contact .quad-idx {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--amber);
}

.page-contact .quad-title {
  margin: 0;
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--fog);
}

.page-contact .quad-text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--pale);
}

.page-contact .quad-more {
  margin: 0;
  padding-top: 10px;
  border-top: 1px dashed var(--pc-rule);
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--mist);
  overflow: hidden;
}

.page-contact .contact-media-wide {
  margin-top: 20px;
}

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

/* 推进步骤 */
.page-contact .flow {
  display: grid;
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .flow-step {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 16px;
  padding-top: 18px;
  border-top: 1px solid var(--pc-rule);
}

.page-contact .flow-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 20px;
  line-height: 1.2;
  color: var(--cyan);
}

.page-contact .flow-step:last-child .flow-num {
  color: var(--amber);
}

.page-contact .flow-title {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--fog);
}

.page-contact .flow-step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

/* 侧栏 */
.page-contact .contact-aside {
  display: grid;
  gap: 14px;
  align-content: start;
  min-width: 0;
}

.page-contact .aside-card {
  display: grid;
  gap: 8px;
  padding: 18px 18px 20px;
  background: var(--panel);
  border-top: 2px solid var(--cyan);
}

.page-contact .aside-card--record {
  border-top-color: var(--amber);
}

.page-contact .aside-card--link {
  border-top-color: var(--grid);
}

.page-contact .aside-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.22em;
  color: var(--mist);
}

.page-contact .aside-value {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--fog);
}

.page-contact .aside-value--mono {
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.page-contact .aside-note {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .aside-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 4px 0 0;
}

.page-contact .aside-card--details {
  gap: 0;
  border-top-color: var(--cyan);
}

.page-contact .aside-card--details summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-family: var(--font-head);
  font-size: 14.5px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--fog);
  cursor: pointer;
  list-style: none;
}

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

.page-contact .aside-card--details summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
  color: var(--cyan);
}

.page-contact .aside-card--details[open] summary::after {
  content: "\2013";
}

.page-contact .aside-list {
  display: grid;
  gap: 10px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .aside-list li {
  position: relative;
  padding-left: 15px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .aside-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 5px;
  height: 5px;
  background: var(--cyan);
}

/* 窄屏适配 */
@media (max-width: 419px) {
  .page-contact .prep-item,
  .page-contact .flow-step {
    grid-template-columns: 32px minmax(0, 1fr);
    gap: 12px;
  }

  .page-contact .channel-card,
  .page-contact .quad-cell {
    padding: 18px 16px;
  }
}

/* 平板与桌面 */
@media (min-width: 700px) {
  .page-contact .prep-item {
    grid-template-columns: 56px minmax(0, 1fr);
    padding: 22px 20px;
  }

  .page-contact .flow {
    gap: 22px;
  }

  .page-contact .flow-step {
    padding-top: 22px;
  }
}

@media (min-width: 760px) {
  .page-contact .quad {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 820px) {
  .page-contact .channels {
    grid-template-columns: 1fr 1fr;
    gap: 18px;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero-inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 48px;
    align-items: end;
  }
}

@media (min-width: 980px) {
  .page-contact .contact-split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 62px;
    align-items: start;
  }

  .page-contact .contact-aside {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }

  .page-contact .quad-more {
    max-height: 0;
    padding-top: 0;
    border-top-color: transparent;
    opacity: 0;
    transition: max-height 0.3s ease, opacity 0.22s ease, padding-top 0.3s ease;
  }

  .page-contact .quad-cell:hover .quad-more,
  .page-contact .quad-cell:focus-within .quad-more {
    max-height: 220px;
    padding-top: 10px;
    border-top-color: var(--pc-rule);
    opacity: 1;
  }
}

@media (min-width: 1200px) {
  .page-contact .contact-hero-media {
    margin-right: calc(var(--gutter) * -0.4);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .prep-item,
  .page-contact .quad-cell,
  .page-contact .quad-more {
    transition: none;
  }
}