/* ===== 合作联系 · 页面专属样式（作用域 .page-contact） ===== */

.page-contact {
  display: block;
  overflow-x: hidden;
  background: var(--ink-night);
  color: var(--prayer);
}

/* ---------- 顶部通道区 ---------- */

.page-contact .ct-top {
  position: relative;
  isolation: isolate;
  padding: clamp(26px, 4.5vw, 56px) 0 clamp(48px, 7vw, 96px);
  background:
    radial-gradient(115% 80% at 92% -8%, rgba(216, 166, 60, 0.18), transparent 58%),
    radial-gradient(85% 70% at 2% 112%, rgba(43, 33, 80, 0.95), transparent 64%),
    var(--ink-night);
}

.page-contact .ct-top::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(180deg, rgba(143, 163, 192, 0.13) 0 1px, transparent 1px 68px),
    repeating-linear-gradient(90deg, rgba(143, 163, 192, 0.08) 0 1px, transparent 1px 96px);
}

.page-contact .ct-top__split {
  display: grid;
  gap: 28px;
  margin-top: clamp(18px, 3vw, 34px);
}

.page-contact .ct-kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--barley);
}

.page-contact .ct-top h1 {
  margin: 0;
  max-width: 15em;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(30px, 5.2vw, 58px);
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--prayer);
}

.page-contact .ct-lead {
  margin: 20px 0 0;
  max-width: 46ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--steel);
}

.page-contact .ct-top__figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--line-strong);
  background: var(--indigo);
}

.page-contact .ct-top__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.05);
}

.page-contact .ct-top__figure figcaption {
  position: absolute;
  left: 0;
  bottom: 0;
  max-width: 100%;
  padding: 9px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  line-height: 1.5;
  color: var(--prayer);
  background: rgba(10, 23, 48, 0.8);
  border-top: 1px solid var(--line-strong);
  border-right: 1px solid var(--line-strong);
}

@media (min-width: 940px) {
  .page-contact .ct-top__split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: clamp(32px, 4vw, 64px);
    align-items: end;
  }
  .page-contact .ct-top__figure img {
    aspect-ratio: 3 / 2;
  }
}

/* ---------- 三条通道：不等宽分栏 ---------- */

.page-contact .ct-channels {
  display: grid;
  gap: 1px;
  margin-top: clamp(38px, 5vw, 72px);
  background: var(--line-strong);
  border: 1px solid var(--line-strong);
}

.page-contact .ct-chan {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: clamp(24px, 3vw, 36px) clamp(20px, 2.6vw, 32px) clamp(22px, 2.6vw, 30px);
  background: linear-gradient(180deg, rgba(14, 44, 42, 0.96) 0%, rgba(10, 23, 48, 0.96) 100%);
}

.page-contact .ct-chan::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  right: 0;
  height: 3px;
}

.page-contact .ct-chan--mail::before { background: var(--barley); }
.page-contact .ct-chan--phone::before { background: var(--butter); }
.page-contact .ct-chan--visit::before { background: var(--proof); }

.page-contact .ct-chan__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(19px, 2.1vw, 24px);
  line-height: 1.25;
  color: var(--prayer);
}

.page-contact .ct-chan__desc {
  margin: 0 0 auto;
  max-width: 42ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--steel);
}

.page-contact .ct-chan__key {
  margin: 0;
  padding-top: 8px;
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: -0.005em;
  line-height: 1.5;
  overflow-wrap: anywhere;
  color: var(--barley);
}

.page-contact .ct-chan--mail .ct-chan__key { font-size: clamp(16px, 2.1vw, 23px); }
.page-contact .ct-chan--phone .ct-chan__key { font-size: clamp(21px, 2.5vw, 29px); color: var(--butter); }
.page-contact .ct-chan--visit .ct-chan__key { font-size: clamp(15px, 1.6vw, 18px); color: var(--prayer); }

.page-contact .ct-chan__foot {
  margin: 0;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--steel);
}

@media (min-width: 900px) {
  .page-contact .ct-channels {
    grid-template-columns: 1.55fr 1fr 1fr;
  }
}

/* ---------- 咨询准备清单 ---------- */

.page-contact .ct-prep {
  padding: clamp(56px, 8vw, 108px) 0;
  background: var(--deep-teal);
  color: var(--prayer);
}

.page-contact .ct-prep .sh-sec-num { color: var(--barley); }
.page-contact .ct-prep .sh-sec-title { color: var(--prayer); }
.page-contact .ct-prep .sh-sec-note { color: var(--steel); }

.page-contact .ct-checklist {
  list-style: none;
  display: grid;
  gap: 1px;
  margin: clamp(28px, 4vw, 48px) 0 0;
  padding: 0;
  background: var(--line-strong);
  border: 1px solid var(--line-strong);
}

.page-contact .ct-checklist > li {
  background: var(--deep-teal);
}

.page-contact .ct-check {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  height: 100%;
  padding: 18px 20px;
  cursor: pointer;
}

.page-contact .ct-check input {
  -webkit-appearance: none;
  appearance: none;
  flex: 0 0 auto;
  position: relative;
  width: 18px;
  height: 18px;
  margin: 3px 0 0;
  border: 1px solid var(--line-strong);
  background: transparent;
  cursor: pointer;
}

.page-contact .ct-check input:checked {
  border-color: var(--barley);
  background: var(--barley);
}

.page-contact .ct-check input:checked::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 1px;
  width: 5px;
  height: 10px;
  border-right: 2px solid var(--ink-night);
  border-bottom: 2px solid var(--ink-night);
  transform: rotate(45deg);
}

.page-contact .ct-check input:focus-visible {
  outline: 2px solid var(--butter);
  outline-offset: 2px;
}

.page-contact .ct-check__label {
  display: block;
  font-weight: 700;
  font-size: 16px;
  color: var(--prayer);
}

.page-contact .ct-check__hint {
  display: block;
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--steel);
}

@media (min-width: 780px) {
  .page-contact .ct-checklist {
    grid-template-columns: 1fr 1fr;
  }
}

/* ---------- 勘误提交流程 ---------- */

.page-contact .ct-fix {
  padding: clamp(56px, 8vw, 108px) 0;
  background: var(--ink-night);
}

.page-contact .ct-fix .sh-sec-num { color: var(--butter); }
.page-contact .ct-fix .sh-sec-title { color: var(--prayer); }
.page-contact .ct-fix .sh-sec-note { color: var(--steel); }

.page-contact .ct-steps {
  counter-reset: ctstep;
  list-style: none;
  margin: clamp(28px, 4vw, 48px) 0 0;
  padding: 0;
}

.page-contact .ct-steps > li {
  counter-increment: ctstep;
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

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

.page-contact .ct-steps > li::before {
  content: counter(ctstep, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.6;
  color: var(--butter);
}

.page-contact .ct-steps strong {
  display: block;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 17px;
  letter-spacing: -0.005em;
  color: var(--prayer);
}

.page-contact .ct-steps p {
  margin: 7px 0 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--steel);
}

@media (min-width: 640px) {
  .page-contact .ct-steps > li {
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 18px;
  }
  .page-contact .ct-steps > li::before {
    padding-top: 3px;
  }
}

/* ---------- 现场查阅 ---------- */

.page-contact .ct-visit {
  padding: clamp(56px, 8vw, 108px) 0;
  background: var(--indigo);
}

.page-contact .ct-visit .sh-sec-num { color: var(--barley); }
.page-contact .ct-visit .sh-sec-title { color: var(--prayer); }
.page-contact .ct-visit .sh-sec-note { color: var(--steel); }

.page-contact .ct-visit__grid {
  display: grid;
  gap: 34px;
  margin-top: clamp(28px, 4vw, 48px);
}

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

.page-contact .ct-visit__facts > li {
  display: grid;
  gap: 7px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .ct-visit__facts > li:first-child {
  border-top: 1px solid var(--line);
}

.page-contact .ct-visit__k {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--steel);
}

.page-contact .ct-visit__v {
  font-size: 16px;
  line-height: 1.75;
  color: var(--prayer);
  overflow-wrap: anywhere;
}

.page-contact .ct-visit__fig {
  margin: 0;
  border: 1px solid var(--line-strong);
  background: rgba(10, 23, 48, 0.6);
}

.page-contact .ct-visit__fig img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

.page-contact .ct-visit__fig figcaption {
  padding: 12px 16px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--steel);
}

@media (min-width: 900px) {
  .page-contact .ct-visit__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: clamp(34px, 4.5vw, 64px);
    align-items: start;
  }
}

/* ---------- 响应节奏（浅色收尾） ---------- */

.page-contact .ct-cadence {
  padding: clamp(56px, 8vw, 108px) 0;
  background: var(--prayer);
  color: var(--ink);
}

.page-contact .ct-cadence .sh-sec-num {
  color: var(--wine);
}

.page-contact .ct-cadence .sh-sec-title {
  color: var(--ink);
}

.page-contact .ct-cadence .sh-sec-note {
  color: #4e5a6b;
}

.page-contact .ct-route {
  display: grid;
  gap: 1px;
  margin-top: clamp(28px, 4vw, 48px);
  background: var(--line-dark-strong);
  border: 1px solid var(--line-dark);
}

.page-contact .ct-route__item {
  padding: clamp(22px, 3vw, 32px);
  background: var(--prayer);
}

.page-contact .ct-route__num {
  display: block;
  font-size: 14px;
  letter-spacing: 0.14em;
  color: var(--wine);
}

.page-contact .ct-cadence .sh-num {
  color: var(--wine);
}

.page-contact .ct-route__item h3 {
  margin: 12px 0 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 19px;
  letter-spacing: -0.005em;
  color: var(--ink);
}

.page-contact .ct-route__item p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: #3c475a;
}

@media (min-width: 820px) {
  .page-contact .ct-route {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}