.page-contact {
  --ct-gap: clamp(16px, 2.4vw, 28px);
  --ct-line: 1px solid var(--line-500);
  --ct-soft-line: 1px solid rgba(51, 64, 77, .7);
  background: var(--ink-900);
  color: var(--text);
  font-family: var(--font-body);
  padding-bottom: clamp(48px, 7vw, 96px);
  overflow-x: hidden;
}

.page-contact .breadcrumbs {
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-contact .section-head {
  margin-bottom: clamp(22px, 3vw, 38px);
}

/* ---------- 首屏 ---------- */
.ct-hero {
  position: relative;
  padding-top: clamp(24px, 4vw, 46px);
  padding-bottom: clamp(36px, 6vw, 84px);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(198, 161, 91, .12) 0%, rgba(7, 9, 12, 0) 58%),
    linear-gradient(180deg, var(--ink-800) 0%, var(--ink-900) 100%);
  border-bottom: var(--ct-line);
}

.ct-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 46px);
}

.ct-hero__media {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: var(--ct-line);
  background: var(--panel-700);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 30px), calc(100% - 30px) 100%, 0 100%);
}

.ct-hero__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.ct-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7, 9, 12, .18) 0%, rgba(7, 9, 12, .78) 100%);
  pointer-events: none;
}

.ct-hero__index {
  position: absolute;
  left: clamp(14px, 2.5vw, 26px);
  bottom: clamp(8px, 1.8vw, 16px);
  z-index: 2;
  font-family: var(--font-mono);
  font-size: clamp(52px, 9vw, 104px);
  line-height: .82;
  letter-spacing: -.04em;
  background: var(--gold-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.ct-kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .24em;
  color: var(--ice);
}

.ct-hero h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 5.2vw, 54px);
  line-height: 1.12;
  letter-spacing: -.02em;
  color: var(--text-strong);
}

.ct-lede {
  margin: 0 0 26px;
  max-width: 54ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--text);
}

.ct-hero__facts {
  list-style: none;
  margin: 0;
  padding: 20px 0 0;
  border-top: var(--ct-line);
  display: grid;
  gap: 16px;
}

.ct-hero__fact {
  display: grid;
  gap: 5px;
}

.ct-hero__facts-num {
  font-family: var(--font-mono);
  font-size: clamp(19px, 2.2vw, 23px);
  letter-spacing: -.01em;
  color: var(--gold-light);
}

.ct-hero__facts-label {
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 章节骨架 ---------- */
.ct-sec {
  padding: clamp(40px, 6vw, 82px) 0;
}

.ct-sec + .ct-sec {
  border-top: var(--ct-line);
}

.ct-body {
  margin: 0 0 20px;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--text);
}

.ct-note {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--muted);
}

.ct-note a {
  color: var(--gold-light);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.ct-note a:hover {
  color: var(--ice);
}

/* ---------- 反馈通道 + 联络面板 ---------- */
.ct-duo {
  display: grid;
  gap: clamp(24px, 3.4vw, 44px);
}

.ct-steps {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
}

.ct-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(12px, 2vw, 20px);
  padding: 16px 0;
  border-top: var(--ct-soft-line);
}

.ct-step:last-child {
  border-bottom: var(--ct-soft-line);
}

.ct-step__n {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--gold);
}

.ct-step h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--text-strong);
}

.ct-step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

.ct-types {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 20px;
}

.ct-type {
  padding: 7px 13px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--ice);
  background: rgba(143, 185, 201, .07);
  border: 1px solid rgba(143, 185, 201, .32);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
}

.ct-panel {
  padding: clamp(20px, 3vw, 28px);
  background: var(--panel-700);
}

.ct-panel__eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .26em;
  color: var(--gold);
}

.ct-panel__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--text-strong);
}

.ct-line {
  padding: 14px 0;
  border-top: var(--ct-soft-line);
}

.ct-line__label {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--muted);
}

.ct-line__value {
  display: block;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-strong);
  word-break: break-word;
}

.ct-line__value--body {
  font-family: var(--font-body);
  font-size: 14.5px;
}

.ct-line__hint {
  margin: 6px 0 0;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- 时效刻度 ---------- */
.ct-scale {
  position: relative;
  display: grid;
  gap: clamp(20px, 2.8vw, 30px);
  padding-top: 30px;
}

.ct-scale::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: rgba(51, 64, 77, .8);
}

.ct-scale::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  height: 2px;
  width: 58%;
  background: var(--gold-grad);
}

.ct-scale__item {
  position: relative;
  padding-top: 20px;
}

.ct-scale__tick {
  position: absolute;
  top: -7px;
  left: 0;
  width: 12px;
  height: 12px;
  border: 2px solid var(--gold);
  background: var(--ink-900);
  transform: rotate(45deg);
  transition: background .2s var(--ease), transform .2s var(--ease);
}

.ct-scale__item:hover .ct-scale__tick {
  background: var(--gold);
  transform: rotate(45deg) scale(1.2);
}

.ct-scale__code {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--gold-light);
}

.ct-scale h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--text-strong);
}

.ct-scale p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 合作共建 ---------- */
.ct-partner {
  display: grid;
  gap: clamp(22px, 3vw, 40px);
}

.ct-req {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.ct-req li {
  padding: 14px 16px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text);
  background: rgba(23, 30, 38, .58);
  border: 1px solid rgba(51, 64, 77, .8);
  border-left: 2px solid var(--gold);
}

.ct-req strong {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .14em;
  color: var(--gold-light);
}

/* ---------- 自查清单 ---------- */
.ct-check {
  display: grid;
  gap: 10px;
  margin: 0 0 20px;
}

.ct-check__item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 13px 15px;
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--text);
  background: rgba(23, 30, 38, .5);
  border: 1px solid rgba(51, 64, 77, .8);
  cursor: pointer;
  transition: border-color .18s var(--ease), background .18s var(--ease);
}

.ct-check__item:hover {
  border-color: rgba(198, 161, 91, .55);
  background: rgba(198, 161, 91, .06);
}

.ct-check__item input {
  flex: 0 0 16px;
  width: 16px;
  height: 16px;
  margin: 3px 0 0;
  accent-color: var(--gold);
}

.ct-check__item input:focus-visible {
  outline: 2px solid var(--ice);
  outline-offset: 2px;
}

.ct-check__text {
  min-width: 0;
}

/* ---------- 结尾索引链接 ---------- */
.ct-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  padding-top: 22px;
  border-top: var(--ct-line);
}

.ct-links a {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--ice);
  text-decoration: none;
  padding-bottom: 3px;
  border-bottom: 1px solid rgba(143, 185, 201, .35);
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.ct-links a:hover,
.ct-links a:focus-visible {
  color: var(--gold-light);
  border-color: var(--gold-light);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .ct-hero__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .ct-check {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 920px) {
  .ct-hero__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: center;
  }

  .ct-duo {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: start;
  }

  .ct-duo__side {
    position: sticky;
    top: var(--rail-top);
  }

  .ct-scale {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(22px, 3vw, 40px);
  }

  .ct-partner {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 1120px) {
  .ct-hero {
    padding-top: clamp(30px, 4vw, 54px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .ct-scale__tick,
  .ct-check__item,
  .ct-links a {
    transition: none;
  }

  .ct-scale__item:hover .ct-scale__tick {
    transform: rotate(45deg);
  }
}