.page-contact {
  --ct-muted: rgba(247, 243, 234, 0.68);
  --ct-muted-strong: rgba(247, 243, 234, 0.84);
  --ct-ink-soft: rgba(20, 28, 25, 0.82);
  background:
    radial-gradient(120% 78% at 100% 0%, rgba(30, 66, 56, 0.5) 0%, rgba(11, 26, 21, 0) 58%),
    var(--ink);
  color: var(--cream);
  padding-bottom: clamp(48px, 8vw, 88px);
  overflow-x: clip;
}

/* 面包屑 */
.page-contact .ct-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: clamp(18px, 3vw, 26px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--stone);
}
.page-contact .ct-crumbs a {
  color: var(--cyan);
  text-decoration: none;
}
.page-contact .ct-crumbs a:hover,
.page-contact .ct-crumbs a:focus-visible {
  text-decoration: underline;
}
.page-contact .ct-crumbs-sep {
  color: var(--stone);
}
.page-contact .ct-crumbs span[aria-current="page"] {
  color: var(--ct-muted-strong);
}

/* 首屏 */
.page-contact .ct-hero {
  padding: clamp(22px, 4vw, 40px) 0 clamp(32px, 6vw, 58px);
}
.page-contact .ct-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--orange);
}
.page-contact .ct-kicker::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--orange);
  opacity: 0.72;
}
.page-contact .ct-hero h1 {
  margin: 0 0 18px;
  max-width: 20em;
  font-size: clamp(27px, 5.6vw, 46px);
  line-height: 1.22;
  letter-spacing: -0.02em;
  font-weight: 700;
  text-align: left;
}
.page-contact .ct-lede {
  margin: 0 0 clamp(22px, 4vw, 32px);
  max-width: 34em;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.8;
  color: var(--ct-muted-strong);
}

.page-contact .ct-quick {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}
.page-contact .ct-quick-item {
  display: flex;
  flex-direction: column;
  gap: 7px;
  min-width: 0;
  padding: 15px 17px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--coal);
}
.page-contact .ct-quick-item .idx,
.page-contact .ct-scene summary .idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--stone);
}
.page-contact .ct-quick-value {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--cream);
  overflow-wrap: anywhere;
}

/* 章节骨架 */
.page-contact .ct-block {
  padding: clamp(32px, 5.5vw, 56px) 0;
  border-top: 1px solid var(--line-soft);
}
.page-contact .ct-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}
.page-contact .ct-body {
  min-width: 0;
}
.page-contact .ct-h2 {
  margin: 0 0 12px;
  font-size: clamp(21px, 3.2vw, 28px);
  line-height: 1.32;
  letter-spacing: -0.01em;
  font-weight: 600;
  color: var(--cream);
  text-align: left;
}
.page-contact .ct-rail-note {
  margin: 0;
  max-width: 30em;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ct-muted);
}

/* 渠道展签 */
.page-contact .ct-channels {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  gap: 14px;
}
.page-contact .ct-channel {
  display: grid;
  gap: 8px;
  min-width: 0;
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--orange);
  border-radius: var(--r-lg);
  background: linear-gradient(160deg, rgba(30, 66, 56, 0.55) 0%, rgba(20, 28, 25, 0.92) 64%);
}
.page-contact .ct-channel-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--orange);
}
.page-contact .ct-channel-value {
  font-size: clamp(16px, 2.2vw, 20px);
  font-weight: 600;
  line-height: 1.45;
  color: var(--cream);
  overflow-wrap: anywhere;
}
.page-contact .ct-channel-note {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--ct-muted);
}
.page-contact .ct-channel-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 4px 0 0;
}

/* 图片展签 */
.page-contact .ct-figure {
  margin: 0;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-xl);
  background: var(--coal);
  overflow: hidden;
}
.page-contact .ct-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}
.page-contact .ct-figure figcaption {
  padding: 11px 16px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  line-height: 1.7;
  color: var(--stone);
}

/* 提交要素清单 */
.page-contact .ct-checklist {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-contact .ct-check {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 16px 18px;
  border-radius: var(--r-md);
  background: var(--paper);
  color: var(--coal);
}
.page-contact .ct-check-box {
  position: relative;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  border: 1.5px solid rgba(110, 122, 116, 0.85);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.55);
}
.page-contact .ct-check-box::after {
  content: "";
  position: absolute;
  top: 6px;
  left: 5px;
  width: 9px;
  height: 5px;
  border-left: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  transform: rotate(-45deg);
  opacity: 0;
  transition: opacity 140ms linear;
}
.page-contact .ct-check--done .ct-check-box {
  background: var(--cyan);
  border-color: var(--cyan);
}
.page-contact .ct-check--done .ct-check-box::after {
  opacity: 1;
}
.page-contact .ct-check-text {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ct-ink-soft);
}
.page-contact .ct-check-text strong {
  display: block;
  margin-bottom: 3px;
  font-size: 15px;
  font-weight: 700;
  color: var(--coal);
}
.page-contact .ct-status {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 26px;
  padding: 9px 16px;
  border: 1px solid rgba(34, 224, 206, 0.4);
  border-radius: var(--r-pill);
  background: rgba(34, 224, 206, 0.1);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}
.page-contact .ct-status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
}

/* 纠错三卡 */
.page-contact .ct-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.page-contact .ct-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 20px;
  border-radius: var(--r-lg);
  background: var(--paper);
  color: var(--coal);
}
.page-contact .ct-card h3 {
  margin: 0;
  font-size: 17px;
  line-height: 1.4;
  font-weight: 700;
  color: var(--coal);
}
.page-contact .ct-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--ct-ink-soft);
}

/* 合作方向 */
.page-contact .ct-coop {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}
.page-contact .ct-coop li {
  display: grid;
  gap: 8px;
  padding-bottom: 18px;
  border-bottom: 1px dashed var(--line);
}
.page-contact .ct-coop li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}
.page-contact .ct-coop h3 {
  margin: 0;
  font-size: 17px;
  line-height: 1.4;
  color: var(--cream);
}
.page-contact .ct-coop p {
  margin: 0;
  max-width: 40em;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ct-muted);
}
.page-contact .ct-coop-note {
  margin: 18px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--clay);
  font-size: 14px;
  line-height: 1.8;
  color: var(--ct-muted-strong);
}

/* 回应节奏 */
.page-contact .ct-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
}
.page-contact .ct-step {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-soft);
}
.page-contact .ct-step:first-child {
  border-top: 1px solid var(--line-soft);
}
.page-contact .ct-step-num {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--orange);
}
.page-contact .ct-step h3 {
  margin: 0 0 6px;
  font-size: 16px;
  line-height: 1.45;
  color: var(--cream);
}
.page-contact .ct-step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ct-muted);
}

/* 场景速查 */
.page-contact .ct-scenes {
  display: grid;
  gap: 10px;
  margin-bottom: 28px;
}
.page-contact .ct-scene {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--coal);
  overflow: hidden;
}
.page-contact .ct-scene[open] {
  border-color: rgba(34, 224, 206, 0.45);
}
.page-contact .ct-scene summary {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 16px 18px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--cream);
  cursor: pointer;
  list-style: none;
}
.page-contact .ct-scene summary::-webkit-details-marker {
  display: none;
}
.page-contact .ct-scene summary::after {
  content: "+";
  flex: none;
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--cyan);
}
.page-contact .ct-scene[open] summary::after {
  content: "–";
}
.page-contact .ct-scene summary .idx {
  flex: none;
}
.page-contact .ct-scene-body {
  padding: 0 18px 18px;
}
.page-contact .ct-scene-body p {
  margin: 0 0 10px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ct-muted);
}
.page-contact .ct-template {
  margin: 0;
  padding: 14px 16px;
  border: 1px dashed var(--line);
  border-radius: var(--r-sm);
  background: rgba(11, 26, 21, 0.66);
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.95;
  color: var(--cream);
  white-space: pre-wrap;
  word-break: break-word;
}

/* 底部指引 */
.page-contact .ct-tail {
  padding-top: clamp(8px, 2vw, 16px);
}
.page-contact .ct-tail-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  padding: 24px 22px;
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  background: linear-gradient(120deg, rgba(30, 66, 56, 0.6) 0%, rgba(20, 28, 25, 0.9) 72%);
}
.page-contact .ct-tail-text {
  flex: 1 1 300px;
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--cream);
}
.page-contact .ct-tail-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.page-contact .ct-legal {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--stone);
}
.page-contact .ct-legal a {
  color: var(--cyan);
  text-decoration: none;
}
.page-contact .ct-legal a:hover,
.page-contact .ct-legal a:focus-visible {
  text-decoration: underline;
}

/* 平板及以上 */
@media (min-width: 640px) {
  .page-contact .ct-quick {
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  }
}

/* 桌面：窄栏 + 主列 */
@media (min-width: 900px) {
  .page-contact .ct-split {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: 52px;
  }
  .page-contact .ct-rail {
    position: sticky;
    top: calc(var(--header-h) + 26px);
    align-self: start;
  }
  .page-contact .ct-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-contact .ct-hero {
    padding-top: clamp(30px, 4vw, 48px);
  }
  .page-contact .ct-tail-inner {
    padding: 28px 30px;
  }
}

/* 窄屏微调 */
@media (max-width: 480px) {
  .page-contact .ct-channel {
    padding: 18px 16px;
  }
  .page-contact .ct-check {
    padding: 15px 15px;
    gap: 12px;
  }
  .page-contact .ct-step {
    grid-template-columns: 36px minmax(0, 1fr);
    gap: 12px;
  }
  .page-contact .ct-scene summary {
    padding: 15px 15px;
    font-size: 14.5px;
  }
  .page-contact .ct-scene-body {
    padding: 0 15px 16px;
  }
  .page-contact .ct-tail-inner {
    padding: 20px 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-check-box::after {
    transition: none;
  }
}