.page-contact {
  background:
    radial-gradient(115% 75% at 88% -18%, rgba(23, 73, 58, 0.9) 0%, rgba(11, 18, 16, 0) 62%),
    var(--ink);
  color: var(--cold);
  overflow-x: clip;
}

/* 面包屑 */
.page-contact .contact-crumb {
  padding-top: clamp(14px, 3vw, 26px);
}
.page-contact .contact-crumb .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.1em;
  color: var(--cold-50);
}
.page-contact .contact-crumb .crumb {
  color: var(--cold-70);
  text-decoration: none;
}
.page-contact .contact-crumb a.crumb:hover {
  color: var(--mint);
}
.page-contact .contact-crumb .crumb[aria-current="page"] {
  color: var(--yellow);
}

/* 首屏 */
.page-contact .contact-hero {
  padding: clamp(16px, 3vw, 28px) 0 clamp(30px, 5vw, 60px);
}
.page-contact .contact-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
  grid-template-columns: 1fr;
}
.page-contact .contact-kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mint);
}
.page-contact .contact-h1 {
  margin: 0.4em 0 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2.3rem, 7.4vw, 4.4rem);
  line-height: 0.99;
  letter-spacing: -0.03em;
  color: var(--cold);
}
.page-contact .contact-lede {
  margin: clamp(16px, 2.4vw, 22px) 0 0;
  max-width: 54ch;
  font-size: clamp(1rem, 1.4vw, 1.125rem);
  line-height: 1.62;
  color: var(--cold-70);
}
.page-contact .contact-jump {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.page-contact .contact-jump a {
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  border: 1px solid var(--line-soft);
  background: rgba(242, 247, 243, 0.03);
  color: var(--cold-70);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.06em;
  text-decoration: none;
  transition: color 0.2s var(--ease), background 0.2s var(--ease), border-color 0.2s var(--ease);
}
.page-contact .contact-jump a:hover,
.page-contact .contact-jump a:focus-visible {
  color: var(--ink);
  background: var(--yellow);
  border-color: var(--yellow);
}

/* 值守面板 */
.page-contact .contact-hero__board {
  position: relative;
  padding: clamp(20px, 3vw, 28px);
  border: 1px solid var(--line-soft);
  background: linear-gradient(160deg, rgba(23, 73, 58, 0.95) 0%, rgba(11, 18, 16, 0.92) 74%);
}
.page-contact .contact-hero__board::before,
.page-contact .contact-hero__board::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  border: 1px solid var(--mint);
  opacity: 0.72;
}
.page-contact .contact-hero__board::before {
  top: -1px;
  left: -1px;
  border-right: 0;
  border-bottom: 0;
}
.page-contact .contact-hero__board::after {
  bottom: -1px;
  right: -1px;
  border-left: 0;
  border-top: 0;
}
.page-contact .board-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--yellow);
}
.page-contact .board-time {
  margin: 0.5em 0 0.9em;
  display: flex;
  align-items: baseline;
  gap: 0.35em;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.9rem, 4.4vw, 2.6rem);
  line-height: 1;
  color: var(--cold);
}
.page-contact .board-dash {
  font-size: 0.65em;
  color: var(--line);
}
.page-contact .board-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.page-contact .board-strip .tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  padding: 4px 8px;
  border-radius: var(--radius);
}
.page-contact .board-note {
  margin: 14px 0 0;
  font-size: var(--fs-s);
  line-height: 1.58;
  color: var(--cold-50);
}

/* 主体两栏 */
.page-contact .contact-main {
  padding: 0 0 clamp(36px, 6vw, 72px);
}
.page-contact .contact-main__grid {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  grid-template-columns: 1fr;
}
.page-contact .contact-main__col {
  min-width: 0;
}
.page-contact .sec-head {
  border-top: 1px solid var(--line-soft);
  padding-top: clamp(14px, 2vw, 20px);
}
.page-contact .sec-h2 {
  margin: 0.42em 0 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.55rem, 3.2vw, 2.35rem);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--cold);
}
.page-contact .sec-note {
  margin: 0.72em 0 0;
  max-width: 52ch;
  font-size: var(--fs-s);
  line-height: 1.62;
  color: var(--cold-50);
}

/* 渠道记分格 */
.page-contact .channel-grid {
  display: grid;
  gap: 12px;
  margin-top: clamp(18px, 3vw, 26px);
  grid-template-columns: 1fr;
}
.page-contact .channel-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: clamp(16px, 2.2vw, 22px);
  border: 1px solid var(--line-soft);
  background: linear-gradient(180deg, rgba(44, 52, 48, 0.6), rgba(11, 18, 16, 0.55));
  transition: border-color 0.22s var(--ease), transform 0.22s var(--ease);
}
.page-contact .channel-card:hover {
  border-color: rgba(125, 255, 196, 0.55);
  transform: translateY(-2px);
}
.page-contact .channel-idx {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--cold-30);
}
.page-contact .channel-key {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--yellow);
}
.page-contact .channel-value {
  margin: 0;
  font-size: clamp(1rem, 1.8vw, 1.16rem);
  line-height: 1.4;
  color: var(--cold);
  overflow-wrap: anywhere;
}
.page-contact .channel-value--mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.01em;
}
.page-contact .channel-hint {
  margin: 0;
  font-size: var(--fs-s);
  line-height: 1.55;
  color: var(--cold-50);
}
.page-contact .channel-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: auto;
  padding-top: 6px;
}
.page-contact .copy-btn {
  appearance: none;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 6px 10px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--cold-70);
  border-radius: var(--radius);
  transition: color 0.2s var(--ease), background 0.2s var(--ease), border-color 0.2s var(--ease);
}
.page-contact .copy-btn:hover {
  color: var(--ink);
  background: var(--mint);
  border-color: var(--mint);
}
.page-contact .copy-btn:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 2px;
}
.page-contact .copy-status {
  margin: 10px 0 0;
  min-height: 1.2em;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.05em;
  color: var(--mint);
}

/* 图像 */
.page-contact .contact-media {
  margin: clamp(18px, 3vw, 26px) 0 0;
}
.page-contact .contact-media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--line-soft);
}
.page-contact .contact-media figcaption {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  line-height: 1.5;
  color: var(--cold-30);
}

/* 准备清单 */
.page-contact .checklist-panel {
  position: relative;
  margin-top: clamp(18px, 3vw, 26px);
  padding: clamp(18px, 2.8vw, 26px);
  border: 1px solid var(--line-soft);
  background: linear-gradient(180deg, rgba(18, 59, 46, 0.45), rgba(11, 18, 16, 0.4));
}
.page-contact .check-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-contact .check-item {
  position: relative;
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 12px;
  padding: 13px 0;
  border-top: 1px dashed var(--line-soft);
  cursor: pointer;
}
.page-contact .check-item:first-child {
  border-top: 0;
  padding-top: 0;
}
.page-contact .check-input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}
.page-contact .check-box {
  grid-column: 1;
  width: 20px;
  height: 20px;
  margin-top: 2px;
  display: inline-block;
  position: relative;
  border: 1px solid var(--line);
  background: rgba(242, 247, 243, 0.04);
  transition: background 0.18s var(--ease), border-color 0.18s var(--ease);
}
.page-contact .check-item:hover .check-box {
  border-color: var(--yellow);
}
.page-contact .check-input:checked + .check-box {
  background: var(--yellow);
  border-color: var(--yellow);
}
.page-contact .check-input:checked + .check-box::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 2px;
  width: 5px;
  height: 10px;
  border-right: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  transform: rotate(40deg);
}
.page-contact .check-input:focus-visible + .check-box {
  outline: 2px solid var(--mint);
  outline-offset: 2px;
}
.page-contact .check-text {
  grid-column: 2;
  min-width: 0;
}
.page-contact .check-title {
  display: block;
  font-size: var(--fs-m);
  line-height: 1.4;
  color: var(--cold);
}
.page-contact .check-desc {
  display: block;
  margin-top: 4px;
  font-size: var(--fs-s);
  line-height: 1.56;
  color: var(--cold-50);
}
.page-contact .check-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
}
.page-contact .contact-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.05em;
  color: var(--mint);
  text-decoration: none;
  border-bottom: 1px solid rgba(125, 255, 196, 0.4);
  padding-bottom: 2px;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.page-contact .contact-link:hover,
.page-contact .contact-link:focus-visible {
  color: var(--cold);
  border-bottom-color: var(--cold);
}

/* 合作与反馈 */
.page-contact .contact-feedback {
  padding: 0 0 clamp(36px, 6vw, 72px);
}
.page-contact .feedback-grid {
  display: grid;
  gap: 12px;
  margin-top: clamp(18px, 3vw, 26px);
  grid-template-columns: 1fr;
}
.page-contact .feedback-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: clamp(16px, 2.4vw, 22px);
  border: 1px solid var(--line-soft);
  border-top: 2px solid var(--clay);
  background: rgba(44, 52, 48, 0.3);
}
.page-contact .feedback-card:nth-child(2) {
  border-top-color: var(--yellow);
}
.page-contact .feedback-card:nth-child(3) {
  border-top-color: var(--mint);
}
.page-contact .feedback-idx {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cold-30);
}
.page-contact .feedback-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.15rem, 2vw, 1.4rem);
  letter-spacing: -0.01em;
  color: var(--cold);
}
.page-contact .feedback-text {
  margin: 0;
  font-size: var(--fs-s);
  line-height: 1.62;
  color: var(--cold-70);
}
.page-contact .feedback-meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--cold-30);
}
.page-contact .feedback-card .contact-link {
  margin-top: 4px;
  align-self: flex-start;
}

/* 站点信息 */
.page-contact .site-info {
  background: var(--cream);
  color: var(--ink);
  padding: clamp(32px, 5vw, 60px) 0;
  border-top: 1px solid var(--line);
}
.page-contact .site-info__grid {
  display: grid;
  gap: clamp(22px, 3vw, 36px);
  grid-template-columns: 1fr;
}
.page-contact .site-info .contact-kicker {
  color: var(--clay);
}
.page-contact .site-info__h2 {
  margin: 0.42em 0 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.page-contact .site-info__note {
  margin: 0.8em 0 0;
  max-width: 52ch;
  font-size: var(--fs-s);
  line-height: 1.68;
  color: rgba(11, 18, 16, 0.72);
}
.page-contact .icp-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid rgba(11, 18, 16, 0.2);
  font-family: var(--font-mono);
}
.page-contact .icp-label {
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(11, 18, 16, 0.55);
}
.page-contact .icp-value {
  font-size: var(--fs-m);
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
}
.page-contact .info-links {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid rgba(11, 18, 16, 0.2);
}
.page-contact .info-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 2px;
  border-bottom: 1px solid rgba(11, 18, 16, 0.2);
  color: var(--ink);
  text-decoration: none;
  font-size: var(--fs-m);
  transition: background 0.2s var(--ease), padding-left 0.2s var(--ease);
}
.page-contact .info-links a::after {
  content: "→";
  font-family: var(--font-mono);
  color: var(--clay);
}
.page-contact .info-links a:hover {
  background: rgba(11, 18, 16, 0.06);
  padding-left: 8px;
}

/* 入场动效 */
@keyframes pc-rise {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}
@media (prefers-reduced-motion: no-preference) {
  .page-contact .contact-hero__lede {
    animation: pc-rise 0.55s var(--ease) both;
  }
  .page-contact .contact-hero__board {
    animation: pc-rise 0.55s var(--ease) 0.1s both;
  }
}

/* 断点 */
@media (min-width: 620px) {
  .page-contact .channel-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-contact .channel-card--wide {
    grid-column: 1 / -1;
  }
}
@media (min-width: 760px) {
  .page-contact .feedback-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}
@media (min-width: 820px) {
  .page-contact .site-info__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    align-items: start;
  }
}
@media (min-width: 920px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(300px, 0.8fr);
    align-items: end;
  }
}
@media (min-width: 980px) {
  .page-contact .contact-main__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: start;
  }
  .page-contact .contact-main__col:first-child {
    padding-right: clamp(8px, 1.5vw, 20px);
  }
}
@media (prefers-reduced-motion: reduce) {
  .page-contact *,
  .page-contact *::before,
  .page-contact *::after {
    animation: none !important;
    transition-duration: 0.01ms !important;
  }
}