.page-contact {
  --ct-aside-w: 320px;
  --ct-gap: clamp(26px, 3.4vw, 54px);
  position: relative;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--f-body);
  overflow-x: hidden;
}

/* 面包屑 */
.page-contact .ct-crumbs {
  max-width: var(--maxw);
  margin-inline: auto;
  padding: 18px var(--gut) 0;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--stone);
}
.page-contact .ct-crumbs a {
  color: var(--stone);
  text-decoration: none;
  transition: color .2s var(--ease);
}
.page-contact .ct-crumbs a:hover {
  color: var(--red);
}
.page-contact .ct-crumbs .breadcrumbs__sep {
  margin-inline: 8px;
  color: var(--stone);
}

/* 首屏框景横幅 */
.page-contact .ct-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  margin-top: 16px;
  background: var(--ink);
  color: var(--paper);
}
.page-contact .ct-hero__media {
  position: absolute;
  inset: 0;
  z-index: -2;
}
.page-contact .ct-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 42%;
  opacity: .42;
}
.page-contact .ct-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(180deg, rgba(11, 11, 11, .42) 0%, rgba(11, 11, 11, .82) 58%, rgba(11, 11, 11, .97) 100%),
    linear-gradient(96deg, rgba(200, 16, 46, .34) 0%, rgba(200, 16, 46, 0) 58%);
}
.page-contact .ct-hero__inner {
  max-width: var(--maxw);
  margin-inline: auto;
  min-height: clamp(340px, 48vw, 520px);
  padding: clamp(52px, 8vw, 108px) var(--gut) clamp(36px, 4.6vw, 60px);
  display: grid;
  align-content: end;
  gap: 14px;
}
.page-contact .ct-hero__kicker {
  margin: 0;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--cyan);
}
.page-contact .ct-hero__title {
  margin: 0;
  max-width: 24ch;
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(26px, 4.6vw, 48px);
  line-height: 1.16;
  letter-spacing: -.02em;
}
.page-contact .ct-hero__lead {
  margin: 0;
  max-width: 58ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: rgba(244, 241, 234, .82);
}
.page-contact .ct-hero__meta {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.page-contact .ct-hero__pill {
  padding: 7px 13px;
  border: 1px solid rgba(0, 229, 199, .38);
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--cyan);
}

/* 双栏骨架 */
.page-contact .ct-shell {
  max-width: var(--maxw);
  margin-inline: auto;
  padding: clamp(38px, 5.4vw, 76px) var(--gut) clamp(56px, 7vw, 96px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--ct-gap);
}

.page-contact .ct-main {
  min-width: 0;
  display: grid;
  gap: clamp(42px, 6vw, 86px);
}

/* 章节通用 */
.page-contact .ct-block {
  min-width: 0;
}
.page-contact .ct-block__kicker {
  margin: 0 0 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--red);
}
.page-contact .ct-block__kicker::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--red);
  flex: 0 0 auto;
}
.page-contact .ct-block h2 {
  margin: 0 0 14px;
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(21px, 2.9vw, 32px);
  line-height: 1.26;
  letter-spacing: -.02em;
  color: var(--ink);
}
.page-contact .ct-block__intro {
  margin: 0;
  max-width: 64ch;
  font-size: clamp(15px, 1.5vw, 16.5px);
  line-height: 1.82;
  color: var(--ink-soft);
}

/* 合作方向编号列表 */
.page-contact .ct-dirs {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}
.page-contact .ct-dir {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 20px 12px 22px 16px;
  border-bottom: 1px solid var(--line);
  transition: background-color .25s var(--ease);
}
.page-contact .ct-dir::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  bottom: 18px;
  width: 3px;
  background: transparent;
  transition: background-color .25s var(--ease);
}
.page-contact .ct-dir:hover {
  background: rgba(11, 11, 11, .035);
}
.page-contact .ct-dir:hover::before,
.page-contact .ct-dir:focus-within::before {
  background: var(--red);
}
.page-contact .ct-dir__idx {
  font-family: var(--f-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--clay);
  transition: color .25s var(--ease);
}
.page-contact .ct-dir:hover .ct-dir__idx {
  color: var(--red);
}
.page-contact .ct-dir__body {
  min-width: 0;
}
.page-contact .ct-dir__title {
  margin: 0 0 8px;
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -.01em;
  color: var(--ink);
}
.page-contact .ct-dir__text {
  margin: 0 0 10px;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--ink-soft);
}
.page-contact .ct-dir__route {
  margin: 0;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--teal);
}

/* 来函指引 */
.page-contact .ct-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3vw, 42px);
  align-items: start;
}
.page-contact .ct-split__text {
  min-width: 0;
}
.page-contact .ct-checklist {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 15px;
}
.page-contact .ct-checklist li {
  position: relative;
  padding-left: 26px;
  font-size: 15.5px;
  line-height: 1.76;
  color: var(--ink-soft);
}
.page-contact .ct-checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 12px;
  height: 12px;
  border: 1px solid var(--moss);
  border-radius: 50%;
  background:
    radial-gradient(circle at 50% 50%, var(--clay) 0 2.6px, transparent 2.8px);
}
.page-contact .ct-checklist strong {
  color: var(--ink);
  font-weight: 700;
}
.page-contact .ct-hint {
  margin: 22px 0 0;
  padding: 14px 16px;
  background: var(--cool);
  border-left: 3px solid var(--red);
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--ink-soft);
}
.page-contact .ct-figure {
  margin: 0;
}
.page-contact .ct-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid var(--line);
}
.page-contact .ct-figure figcaption {
  margin-top: 10px;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .07em;
  color: var(--stone);
}

/* 响应说明 */
.page-contact .ct-replies {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
}
.page-contact .ct-reply {
  padding-top: 14px;
  border-top: 2px solid var(--ink);
}
.page-contact .ct-reply__mark {
  display: block;
  margin-bottom: 8px;
  font-family: var(--f-mono);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -.01em;
  color: var(--red);
}
.page-contact .ct-reply__title {
  margin: 0 0 6px;
  font-family: var(--f-display);
  font-size: 16.5px;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--ink);
}
.page-contact .ct-reply__text {
  margin: 0;
  font-size: 14.8px;
  line-height: 1.76;
  color: var(--ink-soft);
}

/* 站点落款与备案 */
.page-contact .ct-signoff {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3vw, 38px);
  padding: clamp(24px, 3.4vw, 42px);
  padding-left: clamp(30px, 4vw, 50px);
  background: var(--white);
  border: 1px solid var(--line-strong);
}
.page-contact .ct-signoff::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--red) 0 50%, var(--ink) 50% 100%);
}
.page-contact .ct-glyph {
  color: var(--moss);
  opacity: .8;
  line-height: 0;
}
.page-contact .ct-glyph svg {
  display: block;
  width: 100%;
  max-width: 300px;
  height: auto;
}
.page-contact .ct-signoff__col {
  min-width: 0;
}
.page-contact .ct-signoff__key {
  margin: 0 0 8px;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--stone);
}
.page-contact .ct-signoff__big {
  margin: 0 0 8px;
  font-family: var(--f-mono);
  font-size: clamp(15px, 1.9vw, 19px);
  font-weight: 600;
  letter-spacing: -.01em;
  line-height: 1.5;
  color: var(--ink);
  word-break: break-word;
}
.page-contact .ct-signoff__note {
  margin: 0;
  max-width: 40ch;
  font-size: 14.2px;
  line-height: 1.76;
  color: var(--ink-soft);
}

/* 右侧联系信息栏 */
.page-contact .ct-aside {
  min-width: 0;
}
.page-contact .ct-aside__inner {
  display: grid;
  gap: 20px;
  padding: clamp(22px, 2.8vw, 32px);
  background: var(--ink);
  color: var(--paper);
  border: 1px solid rgba(0, 229, 199, .3);
}
.page-contact .ct-aside__title {
  margin: 0;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--cyan);
}
.page-contact .ct-channels {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 20px;
}
.page-contact .ct-channel {
  padding-top: 16px;
  border-top: 1px solid var(--line-dark);
}
.page-contact .ct-channel__key {
  display: block;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: rgba(244, 241, 234, .55);
}
.page-contact .ct-channel__val {
  display: block;
  margin: 7px 0 9px;
  font-family: var(--f-mono);
  font-size: 14px;
  letter-spacing: -.01em;
  line-height: 1.4;
  color: var(--cyan);
  word-break: break-all;
}
.page-contact .ct-channel__val--text {
  font-family: var(--f-body);
  font-size: 15px;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}
.page-contact .ct-channel--tel .ct-channel__val {
  font-size: 21px;
  letter-spacing: .02em;
}
.page-contact .ct-channel__note {
  display: block;
  font-size: 13.4px;
  line-height: 1.72;
  color: rgba(244, 241, 234, .66);
}
.page-contact .ct-aside__base {
  margin: 0;
  padding-top: 16px;
  border-top: 1px solid var(--line-dark);
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: rgba(244, 241, 234, .58);
}

/* 平板与桌面 */
@media (min-width: 700px) {
  .page-contact .ct-dir {
    grid-template-columns: 64px minmax(0, 1fr);
    column-gap: 18px;
    padding-right: 16px;
  }
  .page-contact .ct-dir__idx {
    padding-top: 3px;
  }
  .page-contact .ct-replies {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }
  .page-contact .ct-signoff {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }
  .page-contact .ct-glyph {
    grid-column: 1 / -1;
  }
}

@media (min-width: 880px) {
  .page-contact .ct-split {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, .96fr);
  }
}

@media (min-width: 980px) {
  .page-contact .ct-shell {
    grid-template-columns: minmax(0, 1fr) var(--ct-aside-w);
    align-items: start;
  }
  .page-contact .ct-aside__inner {
    position: sticky;
    top: calc(var(--bar-h) + 24px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-dir,
  .page-contact .ct-dir::before,
  .page-contact .ct-dir__idx,
  .page-contact .ct-crumbs a {
    transition: none;
  }
}