.page-contact {
  background: var(--ink-900);
  color: var(--mist-100);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-contact .ct-hero {
  position: relative;
  padding-top: calc(var(--header-h) + clamp(26px, 6vw, 68px));
  padding-bottom: clamp(30px, 5vw, 54px);
  background:
    radial-gradient(130% 100% at 84% -14%, rgba(53, 240, 198, .14), transparent 60%),
    radial-gradient(90% 80% at 4% 6%, rgba(255, 138, 61, .09), transparent 58%),
    linear-gradient(180deg, var(--ink-950), var(--ink-900) 84%);
}

.page-contact .ct-hero .crumbs {
  margin-bottom: clamp(20px, 3.4vw, 34px);
}

.page-contact .ct-hero .crumbs ol {
  display: flex;
  flex-wrap: wrap;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-cn);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--slate-400);
}

.page-contact .ct-hero .crumbs li + li::before {
  content: "/";
  margin: 0 10px;
  color: var(--ink-700);
}

.page-contact .ct-hero .crumbs a {
  color: var(--slate-400);
  text-decoration: none;
}

.page-contact .ct-hero .crumbs a:hover,
.page-contact .ct-hero .crumbs a:focus-visible {
  color: var(--cyan-400);
}

.page-contact .ct-hero-grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  margin-bottom: clamp(28px, 4.5vw, 50px);
}

.page-contact .eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-cn);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .2em;
  color: var(--cyan-400);
}

.page-contact h1 {
  margin: 0 0 clamp(16px, 2.4vw, 26px);
  font-family: var(--font-cn);
  font-weight: 700;
  font-size: clamp(30px, 6.6vw, 62px);
  line-height: 1.12;
  letter-spacing: -.015em;
  color: var(--chalk);
  max-width: 20ch;
}

.page-contact .lede {
  margin: 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist-100);
}

.page-contact .ct-hero-route {
  list-style: none;
  margin: 0;
  padding: clamp(18px, 2.6vw, 24px) 0 0;
  display: grid;
  gap: 12px;
  border-top: 1px solid var(--ink-700);
}

.page-contact .ct-hero-route li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  letter-spacing: .02em;
  color: var(--mist-100);
}

.page-contact .ct-dot {
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.page-contact .ct-dot--cyan {
  background: var(--cyan-400);
  box-shadow: 0 0 0 3px rgba(53, 240, 198, .18);
}

.page-contact .ct-dot--orange {
  background: var(--orange-500);
  box-shadow: 0 0 0 3px rgba(255, 138, 61, .18);
}

.page-contact .ct-dot--mist {
  background: var(--mist-100);
  box-shadow: 0 0 0 3px rgba(233, 245, 240, .14);
}

.page-contact .ct-band {
  --ct-corner: 18px;
  margin: 0;
  border: 1px solid var(--ink-700);
  background: var(--ink-800);
  clip-path: polygon(var(--ct-corner) 0, 100% 0, 100% calc(100% - var(--ct-corner)), calc(100% - var(--ct-corner)) 100%, 0 100%, 0 var(--ct-corner));
}

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

/* ---------- 色带与轨迹 ---------- */
.page-contact .ct-rule {
  height: 8px;
  background: linear-gradient(90deg, var(--cyan-400) 0%, var(--cyan-200) 40%, transparent 100%);
}

.page-contact .ct-rule--orange {
  background: linear-gradient(90deg, var(--orange-500) 0%, var(--orange-200) 34%, transparent 100%);
}

.page-contact .ct-track {
  height: 1px;
  max-width: var(--wrap-max);
  margin: 0 auto;
  background-image: repeating-linear-gradient(90deg, var(--ink-700) 0 8px, transparent 8px 17px);
}

/* ---------- 章节头 ---------- */
.page-contact .ct-channels {
  padding: clamp(44px, 7vw, 84px) 0;
  background: var(--ink-900);
}

.page-contact .ct-head {
  margin-bottom: clamp(26px, 4vw, 46px);
}

.page-contact .chapter {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  font-family: var(--font-cn);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .18em;
  color: var(--slate-400);
}

.page-contact .chapter-num {
  display: inline-grid;
  place-items: center;
  min-width: 36px;
  height: 24px;
  padding: 0 8px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--ink-950);
  background: var(--cyan-400);
  clip-path: polygon(6px 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%, 0 6px);
}

.page-contact .ct-head h2 {
  margin: 0 0 12px;
  font-family: var(--font-cn);
  font-weight: 600;
  font-size: clamp(24px, 3.6vw, 40px);
  line-height: 1.22;
  letter-spacing: -.01em;
  color: var(--chalk);
  max-width: 22ch;
}

.page-contact .ct-head-sub {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--slate-400);
}

/* ---------- 联系通道 ---------- */
.page-contact .ct-channel-layout {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
}

.page-contact .ct-channel-stack {
  display: grid;
  gap: 16px;
}

.page-contact .ct-card {
  position: relative;
  padding: clamp(20px, 3vw, 32px);
  background: var(--ink-800);
  border: 1px solid var(--ink-700);
  clip-path: polygon(12px 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%, 0 12px);
  transition: transform .3s var(--ease-out), border-color .3s var(--ease-out);
}

.page-contact .ct-card--primary {
  background:
    linear-gradient(135deg, rgba(53, 240, 198, .13), transparent 58%),
    var(--ink-800);
  border-color: rgba(53, 240, 198, .55);
  box-shadow: 0 20px 48px -32px rgba(53, 240, 198, .7);
}

.page-contact .ct-card-tag {
  margin: 0 0 10px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .16em;
  color: var(--cyan-400);
}

.page-contact .ct-card-tag--orange {
  color: var(--orange-500);
}

.page-contact .ct-card h3 {
  margin: 0 0 14px;
  font-family: var(--font-cn);
  font-size: clamp(18px, 2.2vw, 23px);
  font-weight: 600;
  color: var(--chalk);
}

.page-contact .ct-card-mail,
.page-contact .ct-card-tel {
  display: block;
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(20px, 3.6vw, 34px);
  line-height: 1.12;
  letter-spacing: .005em;
  font-variant-numeric: tabular-nums;
  word-break: break-all;
  color: var(--cyan-400);
}

.page-contact .ct-card-tel {
  color: var(--orange-500);
}

.page-contact .ct-card-addr {
  display: block;
  margin: 0 0 14px;
  font-style: normal;
  font-size: clamp(16px, 2vw, 19px);
  font-weight: 500;
  line-height: 1.55;
  color: var(--chalk);
}

.page-contact .ct-card-body {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--mist-100);
}

.page-contact .ct-mini-list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-contact .ct-mini-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--slate-400);
}

.page-contact .ct-mini-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 9px;
  height: 1px;
  background: var(--cyan-400);
}

/* ---------- 响应节奏 ---------- */
.page-contact .ct-rhythm {
  padding: clamp(20px, 3vw, 30px);
}

.page-contact .ct-rhythm-list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-contact .ct-rhythm-list li {
  padding-left: 14px;
  border-left: 2px solid var(--ink-700);
}

.page-contact .ct-rhythm-time {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--cyan-400);
}

.page-contact .ct-rhythm-text {
  display: block;
  font-size: 14px;
  line-height: 1.68;
  color: var(--mist-100);
}

.page-contact .ct-rhythm-foot {
  margin: 22px 0 0;
  padding-top: 16px;
  border-top: 1px dashed var(--ink-700);
  font-size: 13px;
  line-height: 1.72;
  color: var(--slate-400);
}

/* ---------- 勘误提交 ---------- */
.page-contact .ct-fix {
  padding: clamp(44px, 7vw, 84px) 0;
  background: linear-gradient(180deg, var(--ink-950), var(--ink-900));
}

.page-contact .ct-fix-grid {
  display: grid;
  gap: clamp(24px, 3.6vw, 44px);
}

.page-contact .ct-fix-media {
  --ct-corner: 16px;
  margin: 0;
  border: 1px solid var(--ink-700);
  background: var(--ink-800);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--ct-corner)), calc(100% - var(--ct-corner)) 100%, var(--ct-corner) 100%, 0 calc(100% - var(--ct-corner)));
}

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

.page-contact .ct-checklist {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .ct-checklist li {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-top: 1px solid var(--ink-700);
}

.page-contact .ct-checklist li:last-child {
  border-bottom: 1px solid var(--ink-700);
}

.page-contact .ct-check-index {
  padding-top: 2px;
  font-family: var(--font-display);
  font-size: 27px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--cyan-400);
}

.page-contact .ct-check-title {
  margin: 0 0 4px;
  font-size: 16px;
  font-weight: 600;
  color: var(--chalk);
}

.page-contact .ct-check-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--slate-400);
}

.page-contact .ct-fix-foot {
  margin: 24px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--orange-500);
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist-100);
}

/* ---------- 合作对接 ---------- */
.page-contact .ct-partner {
  padding: clamp(44px, 7vw, 84px) 0;
  background: var(--ink-900);
}

.page-contact .ct-partner-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--ink-700);
  border: 1px solid var(--ink-700);
}

.page-contact .ct-partner-item {
  position: relative;
  padding: clamp(20px, 3vw, 28px);
  background: var(--ink-800);
}

.page-contact .ct-partner-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 34px;
  height: 2px;
  background: var(--cyan-400);
}

.page-contact .ct-partner-item:nth-child(even)::before {
  width: 22px;
  background: var(--orange-500);
}

.page-contact .ct-partner-title {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 600;
  color: var(--chalk);
}

.page-contact .ct-partner-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--slate-400);
}

.page-contact .ct-partner-foot {
  margin-top: clamp(22px, 3vw, 34px);
  display: grid;
  gap: 18px;
  align-items: center;
}

.page-contact .ct-partner-foot p {
  margin: 0;
  max-width: 66ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate-400);
}

/* ---------- 收束 ---------- */
.page-contact .ct-close {
  position: relative;
  padding: clamp(54px, 8vw, 112px) 0 clamp(62px, 8vw, 118px);
  background: linear-gradient(180deg, var(--ink-900), var(--ink-950));
  overflow: hidden;
}

.page-contact .ct-close::before {
  content: "";
  position: absolute;
  right: -8%;
  bottom: 30%;
  width: 64%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan-400) 46%, var(--orange-500));
  transform: rotate(-7deg);
  transform-origin: right center;
  opacity: .7;
}

.page-contact .ct-close-title {
  position: relative;
  margin: 0 0 18px;
  font-family: var(--font-cn);
  font-weight: 600;
  font-size: clamp(24px, 4.2vw, 44px);
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--chalk);
  max-width: 24ch;
}

.page-contact .ct-close-text {
  position: relative;
  margin: 0 0 30px;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--slate-400);
}

.page-contact .ct-close-links {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .ct-partner-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .ct-hero-grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: end;
    gap: clamp(34px, 5vw, 76px);
  }

  .page-contact .ct-fix-grid {
    grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-contact .ct-channel-layout {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: start;
  }

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

@media (min-width: 1024px) {
  .page-contact .ct-partner-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .ct-partner-foot {
    grid-template-columns: minmax(0, 1fr) auto;
  }
}

@media (hover: hover) {
  .page-contact .ct-card:hover {
    transform: translateY(-3px);
    border-color: rgba(53, 240, 198, .5);
  }

  .page-contact .ct-partner-item:hover {
    background: var(--ink-800);
    box-shadow: inset 0 0 0 1px rgba(53, 240, 198, .28);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-card,
  .page-contact .ct-partner-item {
    transition: none;
  }

  .page-contact .ct-card:hover {
    transform: none;
  }
}