/* ===== 联系入口 · 页面专属样式（作用域：.page-contact） ===== */

.page-contact {
  --ct-line: var(--by-line);
  --ct-card: var(--by-panel);
  display: block;
  background: var(--by-ink);
  color: var(--by-text);
  font-family: var(--by-font-body);
  -webkit-font-smoothing: antialiased;
}

/* ---------- 首屏：联络战术板 ---------- */
.page-contact .ct-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 4.2vw, 54px) 0 clamp(38px, 5vw, 76px);
  border-bottom: 1px solid var(--ct-line);
  background:
    radial-gradient(130% 100% at 92% -12%, rgba(199, 255, 61, 0.14), transparent 58%),
    radial-gradient(90% 80% at 0% 106%, rgba(255, 107, 61, 0.10), transparent 60%),
    linear-gradient(180deg, var(--by-forest) 0%, var(--by-ink) 100%);
}

.page-contact .ct-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--by-line-soft) 1px, transparent 1px),
    linear-gradient(to bottom, var(--by-line-soft) 1px, transparent 1px);
  background-size: 96px 96px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 80%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 80%);
  opacity: 0.55;
}

.page-contact .ct-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(26px, 3.4vw, 46px);
}

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

.page-contact .ct-hero h1 {
  margin: 14px 0 0;
  font-family: var(--by-font-display);
  font-weight: 800;
  font-size: clamp(34px, 7vw, 70px);
  line-height: 1.04;
  letter-spacing: -0.012em;
  color: var(--by-text);
  text-wrap: balance;
}

.page-contact .ct-hero__lede {
  margin: 18px 0 0;
  max-width: 58ch;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.8;
  color: var(--by-muted);
}

.page-contact .ct-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 12px;
  margin-top: clamp(20px, 2.6vw, 28px);
}

/* 大号渠道卡 */
.page-contact .ct-channels {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-contact .ct-channel {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px 18px;
  min-width: 0;
  color: var(--by-text);
  text-decoration: none;
  background: var(--ct-card);
  border: 1px solid var(--ct-line);
  border-left: 3px solid var(--by-dim);
  border-radius: var(--by-radius);
  transition:
    border-color 160ms var(--by-ease),
    background-color 160ms var(--by-ease),
    transform 160ms var(--by-ease);
}

.page-contact .ct-channel:hover,
.page-contact .ct-channel:focus-visible {
  border-left-color: var(--by-lime);
  background: var(--by-panel-2);
  transform: translateY(-2px);
}

.page-contact .ct-channel:focus-visible {
  outline: 2px solid var(--by-focus);
  outline-offset: 3px;
}

.page-contact .ct-channel--tel {
  border-left-color: var(--by-ember);
}

.page-contact .ct-channel--tel:hover,
.page-contact .ct-channel--tel:focus-visible {
  border-left-color: var(--by-ember);
}

.page-contact .ct-channel__label {
  font-family: var(--by-font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--by-dim);
}

.page-contact .ct-channel__value {
  font-family: var(--by-font-mono);
  font-size: clamp(15px, 2.3vw, 21px);
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: 0.01em;
  color: var(--by-text);
  overflow-wrap: anywhere;
  transition: color 160ms var(--by-ease);
}

.page-contact .ct-channel:hover .ct-channel__value,
.page-contact .ct-channel:focus-visible .ct-channel__value {
  color: var(--by-lime);
}

.page-contact .ct-channel--tel:hover .ct-channel__value,
.page-contact .ct-channel--tel:focus-visible .ct-channel__value {
  color: var(--by-ember);
}

.page-contact .ct-channel__hint {
  font-size: 13px;
  line-height: 1.65;
  color: var(--by-muted);
}

/* 首屏图 */
.page-contact .ct-hero__media {
  position: relative;
  margin: 0;
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--ct-line);
  border-radius: var(--by-radius);
  background: var(--ct-card);
}

.page-contact .ct-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.06);
}

.page-contact .ct-hero__media::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 104px;
  height: 3px;
  background: var(--by-lime);
}

.page-contact .ct-hero__caption {
  padding: 10px 14px;
  border-top: 1px solid var(--ct-line);
  font-family: var(--by-font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--by-dim);
}

/* ---------- 章节外壳 ---------- */
.page-contact .ct-sec {
  padding: clamp(40px, 5.6vw, 84px) 0;
  border-top: 1px solid var(--ct-line);
}

.page-contact .ct-sec--ink {
  background: var(--by-ink);
}

.page-contact .ct-sec--forest {
  background: var(--by-forest);
}

.page-contact .ct-sec__head {
  display: grid;
  gap: 10px;
  max-width: 70ch;
  margin-bottom: clamp(22px, 3vw, 36px);
}

.page-contact .ct-sec__index {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0;
  font-family: var(--by-font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--by-lime);
}

.page-contact .ct-sec__index::after {
  content: "";
  flex: 1 1 auto;
  height: 1px;
  background: linear-gradient(90deg, var(--ct-line), transparent);
}

.page-contact .ct-sec__title {
  margin: 0;
  font-family: var(--by-font-display);
  font-weight: 800;
  font-size: clamp(24px, 3.8vw, 40px);
  line-height: 1.14;
  color: var(--by-text);
  text-wrap: balance;
}

.page-contact .ct-sec__note {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--by-muted);
}

/* ---------- 01 渠道分流 ---------- */
.page-contact .ct-route {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--ct-line);
}

.page-contact .ct-route__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  padding: 18px 10px 18px 0;
  border-bottom: 1px solid var(--ct-line);
  transition: background-color 160ms var(--by-ease);
}

.page-contact .ct-route__row:hover {
  background: linear-gradient(90deg, rgba(199, 255, 61, 0.06), transparent 72%);
}

.page-contact .ct-route__tag {
  justify-self: start;
  align-self: start;
}

.page-contact .ct-route__title {
  margin: 0 0 4px;
  font-family: var(--by-font-body);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--by-text);
}

.page-contact .ct-route__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--by-muted);
}

.page-contact .ct-route__meta {
  font-family: var(--by-font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  line-height: 1.6;
  color: var(--by-dim);
}

/* ---------- 02 提交前准备 ---------- */
.page-contact .ct-prep {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}

.page-contact .ct-prep__panel {
  min-width: 0;
  padding: clamp(18px, 2.4vw, 30px);
  background: var(--by-glass);
  border: 1px solid var(--ct-line);
  border-radius: var(--by-radius);
  box-shadow: var(--by-shadow);
}

.page-contact .ct-prep__panel-title {
  margin: 0;
  font-family: var(--by-font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--by-lime);
}

.page-contact .ct-checklist {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-contact .ct-checklist__item {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--ct-line);
}

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

.page-contact .ct-checklist input[type="checkbox"] {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  margin: 2px 0 0;
  position: relative;
  border: 1px solid var(--by-dim);
  border-radius: 2px;
  background: var(--by-ink);
  cursor: pointer;
  transition:
    background-color 150ms var(--by-ease),
    border-color 150ms var(--by-ease);
}

.page-contact .ct-checklist input[type="checkbox"]:checked {
  background: var(--by-lime);
  border-color: var(--by-lime);
}

.page-contact .ct-checklist input[type="checkbox"]:checked::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 2px;
  width: 6px;
  height: 11px;
  border: solid var(--by-ink);
  border-width: 0 2px 2px 0;
  transform: rotate(42deg);
}

.page-contact .ct-checklist input[type="checkbox"]:focus-visible {
  outline: 2px solid var(--by-focus);
  outline-offset: 2px;
}

.page-contact .ct-checklist__title {
  display: block;
  margin-bottom: 3px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--by-text);
  cursor: pointer;
}

.page-contact .ct-checklist__text {
  display: block;
  font-size: 14px;
  line-height: 1.7;
  color: var(--by-muted);
}

.page-contact .ct-prep__aside {
  min-width: 0;
  padding: clamp(18px, 2.4vw, 26px);
  border: 1px solid var(--ct-line);
  border-top: 2px solid var(--by-ember);
  border-radius: var(--by-radius);
  background: var(--ct-card);
}

.page-contact .ct-prep__aside-title {
  margin: 0 0 12px;
  font-family: var(--by-font-display);
  font-weight: 800;
  font-size: 20px;
  line-height: 1.3;
  color: var(--by-text);
}

.page-contact .ct-prep__list {
  margin: 0;
  padding-left: 20px;
  display: grid;
  gap: 10px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--by-muted);
}

.page-contact .ct-prep__list li::marker {
  font-family: var(--by-font-mono);
  color: var(--by-ember);
}

.page-contact .ct-prep__tip {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--ct-line);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--by-dim);
}

/* ---------- 03 合作与媒体 ---------- */
.page-contact .ct-partner {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-contact .ct-partner__card {
  position: relative;
  min-width: 0;
  padding: 20px 18px 18px;
  background: var(--ct-card);
  border: 1px solid var(--ct-line);
  border-radius: var(--by-radius);
  transition:
    border-color 180ms var(--by-ease),
    transform 180ms var(--by-ease);
}

.page-contact .ct-partner__card:hover {
  border-color: var(--by-dim);
  transform: translateY(-2px);
}

.page-contact .ct-partner__kicker {
  margin: 0 0 10px;
  font-family: var(--by-font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--by-lime);
}

.page-contact .ct-partner__title {
  margin: 0 0 8px;
  font-family: var(--by-font-display);
  font-weight: 800;
  font-size: 22px;
  line-height: 1.25;
  color: var(--by-text);
}

.page-contact .ct-partner__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--by-muted);
}

.page-contact .ct-partner__meta {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--ct-line);
  font-family: var(--by-font-mono);
  font-size: 12px;
  letter-spacing: 0.03em;
  color: var(--by-dim);
}

/* ---------- 04 响应流程 ---------- */
.page-contact .ct-flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  counter-reset: ctflow;
}

.page-contact .ct-flow__step {
  position: relative;
  min-width: 0;
  padding: 16px 18px 18px;
  background: var(--ct-card);
  border: 1px solid var(--ct-line);
  border-left: 2px solid var(--by-ember);
  border-radius: var(--by-radius);
}

.page-contact .ct-flow__num {
  display: inline-block;
  margin-bottom: 8px;
  font-family: var(--by-font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--by-ember);
}

.page-contact .ct-flow__title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--by-text);
}

.page-contact .ct-flow__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--by-muted);
}

/* ---------- 05 地址与备案 ---------- */
.page-contact .ct-place {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  align-items: stretch;
}

.page-contact .ct-place__media {
  margin: 0;
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--ct-line);
  border-radius: var(--by-radius);
  background: var(--ct-card);
}

.page-contact .ct-place__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: 100%;
  min-height: 200px;
  object-fit: cover;
  filter: saturate(0.6) brightness(0.92);
}

.page-contact .ct-place__body {
  min-width: 0;
  padding: clamp(18px, 2.4vw, 28px);
  border: 1px solid var(--ct-line);
  border-radius: var(--by-radius);
  background: var(--by-glass);
}

.page-contact .ct-place__addr {
  margin: 0 0 16px;
  font-family: var(--by-font-display);
  font-weight: 800;
  font-size: clamp(20px, 2.8vw, 28px);
  line-height: 1.3;
  color: var(--by-text);
  overflow-wrap: anywhere;
}

.page-contact .ct-place__list {
  margin: 0;
  display: grid;
  gap: 0;
}

.page-contact .ct-place__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2px;
  padding: 10px 0;
  border-bottom: 1px solid var(--ct-line);
}

.page-contact .ct-place__row dt {
  font-family: var(--by-font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--by-dim);
}

.page-contact .ct-place__row dd {
  margin: 0;
  font-family: var(--by-font-mono);
  font-size: 14px;
  line-height: 1.6;
  color: var(--by-text);
  overflow-wrap: anywhere;
}

.page-contact .ct-place__note {
  margin: 16px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--by-muted);
}

.page-contact .ct-place__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

/* ---------- 窄屏 → 宽屏 ---------- */
@media (min-width: 620px) {
  .page-contact .ct-channels {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  }

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

  .page-contact .ct-place__row {
    grid-template-columns: 108px minmax(0, 1fr);
    gap: 14px;
    align-items: baseline;
  }
}

@media (min-width: 860px) {
  .page-contact .ct-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
    gap: clamp(28px, 3.6vw, 52px);
  }

  .page-contact .ct-route__row {
    grid-template-columns: 84px minmax(0, 1fr) 150px;
    align-items: start;
    gap: 22px;
    padding: 20px 0;
  }

  .page-contact .ct-route__meta {
    text-align: right;
  }

  .page-contact .ct-prep {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: 20px;
  }

  .page-contact .ct-flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
  }

  .page-contact .ct-flow__step {
    border-left: 1px solid var(--ct-line);
    border-top: 2px solid var(--by-ember);
    padding: 18px 16px 20px;
  }

  .page-contact .ct-place {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 20px;
  }
}

@media (min-width: 1120px) {
  .page-contact .ct-partner {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-channel,
  .page-contact .ct-partner__card,
  .page-contact .ct-route__row,
  .page-contact .ct-checklist input[type="checkbox"] {
    transition: none;
  }

  .page-contact .ct-channel:hover,
  .page-contact .ct-channel:focus-visible,
  .page-contact .ct-partner__card:hover {
    transform: none;
  }
}