.page-contact {
  --rail-top: calc(var(--main-h) + 20px);
  --band-accent: var(--cyan);
}

/* ---------- 首屏 ---------- */
.page-contact .ct-hero {
  position: relative;
  padding-top: clamp(28px, 4vw, 52px);
  padding-bottom: clamp(24px, 3vw, 40px);
  border-bottom: 2px solid var(--line);
  background-color: var(--ink-900);
  background-image:
    linear-gradient(180deg, rgba(0, 229, 199, .07), rgba(5, 10, 20, 0) 62%),
    repeating-linear-gradient(90deg, rgba(36, 52, 77, .32) 0 1px, transparent 1px 96px);
}

.page-contact .ct-hero__title {
  margin: 14px 0 0;
}

.page-contact .ct-hero__title::after {
  content: "";
  display: block;
  width: clamp(72px, 12vw, 140px);
  height: 6px;
  margin-top: 18px;
  background: linear-gradient(90deg, var(--cyan) 0 62%, var(--orange) 62% 100%);
  clip-path: polygon(0 0, 100% 0, calc(100% - 12px) 100%, 0 100%);
}

.page-contact .ct-hero__lede {
  margin-top: 18px;
  max-width: 68ch;
}

/* ---------- 双栏骨架 ---------- */
.page-contact .ct-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: start;
  padding-top: clamp(28px, 4vw, 46px);
  padding-bottom: clamp(48px, 6vw, 84px);
}

.page-contact .ct-main {
  min-width: 0;
}

.page-contact .ct-block + .ct-block {
  margin-top: clamp(36px, 5vw, 64px);
}

/* ---------- 通用图与说明 ---------- */
.page-contact .ct-figure {
  margin: 0 0 24px;
  border: 2px solid var(--line);
  background: var(--ink-800);
}

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

.page-contact .ct-figure--accent {
  margin: clamp(36px, 5vw, 64px) 0;
  box-shadow: var(--shadow-1);
}

.page-contact .ct-inline-note {
  margin: 20px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
  border-left: 3px solid var(--line);
  padding-left: 14px;
}

.page-contact .ct-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px dashed rgba(0, 229, 199, .55);
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-contact .ct-link:hover,
.page-contact .ct-link:focus-visible {
  color: var(--text);
  border-bottom-color: var(--text);
}

/* ---------- 三类合作方向：横向条带 ---------- */
.page-contact .ct-band {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  border: 2px solid var(--line);
  background: var(--ink-700);
  box-shadow: var(--shadow-1);
  margin-bottom: 18px;
  transition: transform .18s var(--ease), border-color .18s var(--ease), box-shadow .18s var(--ease);
}

.page-contact .ct-band:last-child {
  margin-bottom: 0;
}

.page-contact .ct-band--cyan { --band-accent: var(--cyan); }
.page-contact .ct-band--orange { --band-accent: var(--orange); }
.page-contact .ct-band--violet { --band-accent: var(--violet); }

.page-contact .ct-band:hover {
  transform: translateY(-2px);
  border-color: var(--band-accent);
  box-shadow: var(--shadow-2);
}

.page-contact .ct-band__no {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 20px 0;
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  color: var(--ink-900);
  background: var(--band-accent);
  border-right: 2px solid var(--line);
}

.page-contact .ct-band__body {
  padding: 20px 22px 22px;
  min-width: 0;
}

.page-contact .ct-band__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(22px, 3vw, 28px);
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-contact .ct-band__desc {
  margin: 0 0 16px;
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--muted);
}

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

.page-contact .ct-band__list li {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .01em;
  color: var(--text);
  background: var(--ink-800);
  border: 1px solid var(--line);
  padding: 5px 10px;
  transition: border-color .18s var(--ease), color .18s var(--ease);
}

.page-contact .ct-band:hover .ct-band__list li {
  border-color: var(--band-accent);
  color: var(--cyan);
}

.page-contact .ct-band--orange:hover .ct-band__list li { color: var(--orange); }
.page-contact .ct-band--violet:hover .ct-band__list li { color: var(--violet); }

/* ---------- 机构授权交付内容 ---------- */
.page-contact .ct-deliver {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-contact .ct-deliver__item {
  border: 2px solid var(--line);
  border-top: 4px solid var(--cyan);
  background: var(--ink-700);
  padding: 18px 16px 20px;
  box-shadow: var(--shadow-1);
  transition: transform .18s var(--ease), box-shadow .18s var(--ease);
}

.page-contact .ct-deliver__item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-2);
}

.page-contact .ct-deliver__item:nth-child(2) { border-top-color: var(--orange); }
.page-contact .ct-deliver__item:nth-child(3) { border-top-color: var(--violet); }

.page-contact .ct-deliver__no {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--muted);
}

.page-contact .ct-deliver__title {
  margin: 10px 0 10px;
  font-family: var(--font-display);
  font-size: 21px;
  letter-spacing: .01em;
  color: var(--text);
}

.page-contact .ct-deliver__body {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- 典型诉求 ---------- */
.page-contact .ct-needs {
  display: grid;
  grid-template-columns: 1fr;
  border-top: 2px solid var(--line);
}

.page-contact .ct-need {
  padding: 18px 4px 18px 18px;
  border-left: 3px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: transparent;
  transition: border-left-color .18s var(--ease), background-color .18s var(--ease);
}

.page-contact .ct-need:last-child {
  border-bottom: 0;
}

.page-contact .ct-need:hover {
  border-left-color: var(--orange);
  background-color: rgba(255, 122, 47, .05);
}

.page-contact .ct-need__title {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}

.page-contact .ct-need__body {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- 右侧行动区 ---------- */
.page-contact .ct-rail {
  min-width: 0;
}

.page-contact .ct-contact {
  position: relative;
  border: 2px solid var(--line);
  background: var(--ink-800);
  box-shadow: var(--shadow-2);
  padding: 26px 22px 22px;
}

.page-contact .ct-contact__bar {
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  height: 4px;
  background: linear-gradient(90deg, var(--cyan) 0 55%, var(--orange) 55% 82%, var(--violet) 82% 100%);
}

.page-contact .ct-contact__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: 24px;
  letter-spacing: .01em;
  color: var(--text);
}

.page-contact .ct-contact__list {
  margin: 0;
}

.page-contact .ct-contact__row {
  display: grid;
  grid-template-columns: 74px minmax(0, 1fr);
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--line);
}

.page-contact .ct-contact__row:last-child {
  border-bottom: 0;
}

.page-contact .ct-contact__row dt {
  font-size: 12.5px;
  color: var(--muted);
  letter-spacing: .02em;
}

.page-contact .ct-contact__row dd {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--text);
  word-break: break-word;
}

.page-contact .ct-contact__mono {
  font-family: var(--font-mono);
  color: var(--cyan);
  word-break: break-all;
}

.page-contact .ct-contact__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 2px solid var(--line);
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- 四步流程 ---------- */
.page-contact .ct-flowwrap {
  margin-top: 26px;
}

.page-contact .ct-flowwrap__title {
  margin: 0 0 18px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--line);
  font-family: var(--font-display);
  font-size: 20px;
  letter-spacing: .05em;
  color: var(--text);
}

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

.page-contact .ct-step {
  position: relative;
  padding-left: 44px;
  padding-bottom: 20px;
}

.page-contact .ct-step:last-child {
  padding-bottom: 0;
}

.page-contact .ct-step::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 32px;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--line), rgba(36, 52, 77, 0));
}

.page-contact .ct-step:last-child::before {
  display: none;
}

.page-contact .ct-step__dot {
  position: absolute;
  left: 0;
  top: 0;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--cyan);
  background: var(--ink-800);
  border: 2px solid var(--line);
  transition: background-color .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease), box-shadow .18s var(--ease);
}

.page-contact .ct-step:hover .ct-step__dot {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink-900);
  box-shadow: 0 0 0 4px rgba(0, 229, 199, .14);
}

.page-contact .ct-step__title {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px;
  margin: 4px 0 6px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
}

.page-contact .ct-step__time {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: .02em;
  color: var(--cyan);
  border: 1px solid rgba(0, 229, 199, .35);
  padding: 2px 6px;
}

.page-contact .ct-step__body {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 相关页面 ---------- */
.page-contact .ct-mini {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.page-contact .ct-mini__link {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .02em;
  color: var(--muted);
  text-decoration: none;
  border: 1px solid var(--line);
  background: var(--ink-800);
  padding: 6px 10px;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-contact .ct-mini__link:hover,
.page-contact .ct-mini__link:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
}

/* ---------- 焦点可见性 ---------- */
.page-contact a:focus-visible,
.page-contact .ct-band:focus-within {
  outline: 2px solid var(--violet);
  outline-offset: 4px;
}

/* ---------- 断点 ---------- */
@media (min-width: 700px) {
  .page-contact .ct-deliver {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .ct-needs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 28px;
  }

  .page-contact .ct-need:last-child {
    border-bottom: 1px solid var(--line);
  }
}

@media (min-width: 1024px) {
  .page-contact .ct-layout {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 40px;
  }

  .page-contact .ct-hero__lede {
    max-width: 58ch;
  }
}

@media (min-width: 1024px) and (min-height: 780px) {
  .page-contact .ct-rail {
    position: sticky;
    top: var(--rail-top);
  }
}

@media (min-width: 1440px) {
  .page-contact .ct-band {
    grid-template-columns: 70px minmax(0, 1fr);
  }

  .page-contact .ct-band__no {
    font-size: 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-band,
  .page-contact .ct-deliver__item,
  .page-contact .ct-step__dot,
  .page-contact .ct-band__list li,
  .page-contact .ct-mini__link {
    transition: none;
  }

  .page-contact .ct-band:hover,
  .page-contact .ct-deliver__item:hover {
    transform: none;
  }
}