.page-contact {
  --ct-hair: 1px solid var(--ab-line);
  --ct-lift: translateY(-2px);
}

/* ---------- 首屏框景带 ---------- */
.page-contact .ct-hero {
  position: relative;
  overflow: hidden;
  background: var(--ab-indigo);
  color: var(--ab-paper);
  padding: 44px 0 56px;
}

.page-contact .ct-hero__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
  opacity: .3;
  filter: saturate(.65) contrast(1.15);
}

.page-contact .ct-hero__veil {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(11, 18, 48, .58) 0%, rgba(11, 18, 48, .9) 72%, var(--ab-indigo) 100%),
    linear-gradient(90deg, rgba(224, 31, 45, .16) 0%, transparent 38%, rgba(18, 87, 214, .16) 100%);
}

.page-contact .ct-hero::after {
  content: "";
  position: absolute;
  inset: 14px;
  border: 1px solid rgba(247, 244, 237, .16);
  pointer-events: none;
}

.page-contact .ct-hero__inner {
  position: relative;
  z-index: 1;
}

.page-contact .ab-crumb {
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--ab-paper-42);
  margin: 0 0 26px;
}

.page-contact .ab-crumb a {
  color: var(--ab-paper-85);
}

.page-contact .ab-crumb__sep {
  margin: 0 8px;
  color: var(--ab-paper-42);
}

.page-contact .ct-hero__kicker {
  margin: 0;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--ab-amber);
  text-transform: uppercase;
}

.page-contact .ct-hero h1 {
  margin: 16px 0 0;
  max-width: 22ch;
  font-size: clamp(30px, 6.2vw, 54px);
  line-height: 1.14;
  letter-spacing: -.02em;
  font-weight: 800;
  color: var(--ab-paper);
}

.page-contact .ct-hero__lead {
  margin: 22px 0 0;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ab-paper-85);
}

/* ---------- 双栏主体 ---------- */
.page-contact .ct-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: start;
}

.page-contact .ab-head {
  margin-bottom: 26px;
}

.page-contact .ab-head__index {
  font-family: var(--ab-font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--ab-red);
  margin: 0 0 12px;
  text-transform: uppercase;
}

.page-contact .ab-head__title {
  margin: 0;
  font-size: clamp(23px, 3.4vw, 32px);
  line-height: 1.28;
  letter-spacing: -.015em;
  font-weight: 800;
  color: var(--ab-ink);
}

.page-contact .ab-head__desc {
  margin: 12px 0 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ab-ink-70);
}

/* ---------- 表单板 ---------- */
.page-contact .ct-form {
  border: var(--ct-hair);
  background: var(--ab-paper);
  padding: 26px 20px 28px;
  box-shadow: 0 1px 0 rgba(14, 16, 21, .04);
}

.page-contact .ct-label {
  margin: 0 0 10px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--ab-ink);
}

.page-contact .ct-kinds {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-contact .ct-kind {
  position: relative;
  display: inline-flex;
}

.page-contact .ct-kind input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: 0;
  opacity: 0;
  pointer-events: none;
}

.page-contact .ct-kind span {
  display: inline-block;
  padding: 10px 15px;
  font-size: 13px;
  line-height: 1;
  letter-spacing: .04em;
  color: var(--ab-ink-70);
  border: var(--ct-hair);
  background: #fff;
  cursor: pointer;
  user-select: none;
  transition: background var(--ab-dur) var(--ab-ease),
              border-color var(--ab-dur) var(--ab-ease),
              color var(--ab-dur) var(--ab-ease);
}

.page-contact .ct-kind:nth-child(odd) input:checked + span {
  background: var(--ab-red);
  border-color: var(--ab-red);
  color: #fff;
}

.page-contact .ct-kind:nth-child(even) input:checked + span {
  background: var(--ab-blue);
  border-color: var(--ab-blue);
  color: #fff;
}

.page-contact .ct-kind span:hover {
  border-color: var(--ab-blue);
  color: var(--ab-blue);
}

.page-contact .ct-kind input:checked + span:hover {
  color: #fff;
}

.page-contact .ct-kind input:focus-visible + span {
  outline: 2px solid var(--ab-amber);
  outline-offset: 2px;
}

.page-contact .ct-hint {
  display: none;
  margin: 16px 0 0;
  padding: 10px 0 10px 14px;
  border-left: 3px solid var(--ab-amber);
  font-size: 14px;
  line-height: 1.75;
  color: var(--ab-ink-70);
}

.page-contact .ct-hint--lead {
  display: block;
}

@supports selector(:has(*)) {
  .page-contact .ct-form:has(input[name="ct-kind-choice"]:checked) .ct-hint--lead {
    display: none;
  }
  .page-contact .ct-form:has(input[value="lead"]:checked) .ct-hint--lead {
    display: block;
  }
  .page-contact .ct-form:has(input[value="fix"]:checked) .ct-hint--fix {
    display: block;
  }
  .page-contact .ct-form:has(input[value="reprint"]:checked) .ct-hint--reprint {
    display: block;
  }
  .page-contact .ct-form:has(input[value="data"]:checked) .ct-hint--data {
    display: block;
  }
}

.page-contact .ct-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 22px;
}

.page-contact .ct-field label {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--ab-ink);
}

.page-contact .ct-field input,
.page-contact .ct-field textarea {
  width: 100%;
  box-sizing: border-box;
  font-family: inherit;
  font-size: 15px;
  line-height: 1.6;
  color: var(--ab-ink);
  background: #fff;
  border: var(--ct-hair);
  border-radius: 0;
  padding: 12px 14px;
  outline: none;
  transition: border-color var(--ab-dur) var(--ab-ease),
              box-shadow var(--ab-dur) var(--ab-ease);
}

.page-contact .ct-field textarea {
  resize: vertical;
  min-height: 128px;
}

.page-contact .ct-field input::placeholder,
.page-contact .ct-field textarea::placeholder {
  color: var(--ab-ink-50);
}

.page-contact .ct-field input:focus,
.page-contact .ct-field textarea:focus {
  border-color: var(--ab-amber);
  box-shadow: 0 0 0 2px rgba(240, 166, 60, .34);
}

.page-contact .ct-submit {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-top: 28px;
  padding-top: 24px;
  border-top: var(--ct-hair);
}

.page-contact .ct-send {
  cursor: pointer;
  border-radius: 0;
}

.page-contact .ct-submit__note {
  margin: 0;
  flex: 1 1 220px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ab-ink-70);
}

/* ---------- 右侧信息卡 ---------- */
.page-contact .ct-side {
  display: grid;
  gap: 24px;
  align-content: start;
}

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

.page-contact .ct-card {
  position: relative;
  background: #fff;
  border: var(--ct-hair);
  padding: 24px 20px 22px;
  transition: transform var(--ab-dur) var(--ab-ease),
              box-shadow var(--ab-dur) var(--ab-ease);
}

.page-contact .ct-card::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  right: -1px;
  height: 3px;
}

.page-contact .ct-card--red::before {
  background: var(--ab-red);
}

.page-contact .ct-card--blue::before {
  background: var(--ab-blue);
}

.page-contact .ct-card--violet::before {
  background: var(--ab-violet);
}

.page-contact .ct-card:hover {
  transform: var(--ct-lift);
  box-shadow: 0 10px 24px -18px rgba(14, 16, 21, .5);
}

.page-contact .ct-card__tag {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ab-ink-50);
}

.page-contact .ct-card__val {
  margin: 0 0 10px;
  font-family: var(--ab-font-mono);
  font-size: 17px;
  line-height: 1.55;
  letter-spacing: .01em;
  color: var(--ab-ink);
  word-break: break-word;
}

.page-contact .ct-card--violet .ct-card__val {
  font-family: var(--ab-font-sans);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0;
}

.page-contact .ct-card__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ab-ink-70);
}

.page-contact .ct-visual {
  margin: 0;
  border: var(--ct-hair);
  background: var(--ab-green);
}

.page-contact .ct-visual img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 2 / 3;
  object-fit: cover;
}

.page-contact .ct-visual figcaption {
  padding: 14px 16px 16px;
  font-size: 13px;
  font-style: italic;
  line-height: 1.75;
  color: var(--ab-paper-65);
  background: var(--ab-green);
}

/* ---------- 合作对接 ---------- */
.page-contact .ct-coop__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-contact .ct-coop__item {
  padding: 24px 20px 26px;
}

.page-contact .ct-coop__no {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--ab-ink-50);
}

.page-contact .ct-coop__item h3 {
  margin: 0 0 12px;
  font-size: 19px;
  line-height: 1.36;
  letter-spacing: -.01em;
  font-weight: 800;
  color: var(--ab-ink);
}

.page-contact .ct-coop__item p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ab-ink-70);
}

.page-contact .ct-coop__fit {
  margin: 0 !important;
  padding-top: 12px;
  border-top: 1px solid var(--ab-line);
  font-size: 13px !important;
  font-style: italic;
  color: var(--ab-ink-50) !important;
}

/* ---------- 回复节奏表 ---------- */
.page-contact .ct-table {
  min-width: 620px;
}

.page-contact .ct-table__cap {
  caption-side: top;
  text-align: left;
  padding: 0 0 14px;
  font-size: 13px;
  font-style: italic;
  color: var(--ab-ink-50);
}

.page-contact .ct-rhythm__note {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ab-ink-50);
}

.page-contact .ct-rhythm__note a {
  color: var(--ab-blue);
  border-bottom: 1px solid var(--ab-line);
  text-decoration: none;
}

.page-contact .ct-rhythm__note a:hover {
  border-bottom-color: var(--ab-blue);
}

/* ---------- 域名与备案条 ---------- */
.page-contact .ct-meta {
  background: var(--ab-indigo);
  color: var(--ab-paper);
  padding: 34px 0 38px;
  border-top: 3px solid var(--ab-red);
}

.page-contact .ct-meta__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}

.page-contact .ct-meta__item {
  padding-left: 14px;
  border-left: 2px solid rgba(247, 244, 237, .22);
}

.page-contact .ct-meta__k {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ab-paper-42);
}

.page-contact .ct-meta__v {
  margin: 0;
  font-family: var(--ab-font-mono);
  font-size: 15px;
  letter-spacing: .04em;
  color: var(--ab-paper);
  word-break: break-word;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-contact .ct-hero {
    padding: 60px 0 76px;
  }
  .page-contact .ct-hero::after {
    inset: 22px;
  }
  .page-contact .ct-form {
    padding: 34px 32px 36px;
  }
  .page-contact .ct-card {
    padding: 26px 24px 24px;
  }
  .page-contact .ct-coop__item {
    padding: 28px 26px 30px;
  }
}

@media (min-width: 720px) {
  .page-contact .ct-meta__inner {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 32px;
  }
}

@media (min-width: 900px) {
  .page-contact .ct-coop__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }
  .page-contact .ct-cards {
    gap: 18px;
  }
}

@media (min-width: 1024px) {
  .page-contact .ct-split {
    grid-template-columns: minmax(0, 1.18fr) minmax(0, .82fr);
    gap: 56px;
  }
  .page-contact .ct-hero h1 {
    font-size: 54px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-card,
  .page-contact .ct-kind span,
  .page-contact .ct-field input,
  .page-contact .ct-field textarea {
    transition: none;
  }
  .page-contact .ct-card:hover {
    transform: none;
  }
}