.page-contact {
  --ct-line-soft: rgba(53, 225, 214, 0.4);
  --ct-glass: rgba(27, 36, 49, 0.78);
  --ct-card: linear-gradient(180deg, rgba(27, 36, 49, 0.86) 0%, rgba(16, 22, 31, 0.94) 100%);
  display: block;
  padding-bottom: clamp(56px, 9vw, 104px);
  color: var(--text);
}

.page-contact .ct-wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 32px);
}

/* ---------- 面包屑 ---------- */
.page-contact .ct-crumb {
  padding-top: clamp(18px, 3vw, 30px);
}

.page-contact .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-contact .breadcrumbs a {
  color: var(--cyan);
  text-decoration: none;
}

.page-contact .breadcrumbs a:hover {
  text-decoration: underline;
}

.page-contact .ct-crumb__sep {
  color: var(--line);
}

/* ---------- 标题区 ---------- */
.page-contact .ct-head {
  max-width: 800px;
  padding: clamp(22px, 4vw, 44px) 0 clamp(30px, 5vw, 54px);
}

.page-contact .ct-head__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(36px, 7.4vw, 74px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-contact .ct-head__title::after {
  content: "";
  display: block;
  width: 108px;
  height: 3px;
  margin-top: 22px;
  background: linear-gradient(90deg, var(--cyan), rgba(53, 225, 214, 0));
}

.page-contact .ct-head__lede {
  margin: 22px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 通讯面板 ---------- */
.page-contact .ct-desk {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

.page-contact .ct-desk__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-contact .ct-desk__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.36;
  filter: saturate(0.85) contrast(1.1);
}

.page-contact .ct-desk::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(112deg, rgba(7, 10, 18, 0.97) 0%, rgba(7, 10, 18, 0.86) 48%, rgba(16, 22, 31, 0.58) 100%);
}

.page-contact .ct-desk__body {
  position: relative;
  z-index: 2;
  display: grid;
  gap: clamp(20px, 3vw, 34px);
  padding: clamp(24px, 5vw, 50px);
}

.page-contact .ct-desk__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(19px, 3vw, 28px);
  letter-spacing: 0.01em;
  color: var(--text);
}

.page-contact .ct-channels {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 34px);
  margin: 0;
}

.page-contact .ct-channel {
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-contact .ct-channel__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-contact .ct-channel dd {
  margin: 0;
}

.page-contact .ct-channel__value {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(16px, 2.7vw, 26px);
  line-height: 1.35;
  letter-spacing: 0.01em;
  color: var(--cyan);
  word-break: break-all;
  text-shadow: 0 0 22px rgba(53, 225, 214, 0.28);
}

.page-contact .ct-channel__note {
  max-width: 44ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 问题分类 ---------- */
.page-contact .ct-asks {
  margin-top: clamp(44px, 8vw, 88px);
}

.page-contact .ct-asks__lede {
  margin: 14px 0 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .ct-ask-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: clamp(22px, 3vw, 34px);
}

.page-contact .ct-ask {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ct-card);
  transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}

.page-contact .ct-ask:hover {
  border-color: var(--ct-line-soft);
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(7, 10, 18, 0.6);
}

.page-contact .ct-ask[open] {
  border-color: var(--cyan);
}

.page-contact .ct-ask--violet[open] {
  border-color: var(--violet);
}

.page-contact .ct-ask--amber[open] {
  border-color: var(--amber);
}

.page-contact .ct-ask__head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: center;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
}

.page-contact .ct-ask__head::-webkit-details-marker {
  display: none;
}

.page-contact .ct-ask__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-contact .ct-ask--violet .ct-ask__idx {
  color: var(--violet);
}

.page-contact .ct-ask--amber .ct-ask__idx {
  color: var(--amber);
}

.page-contact .ct-ask__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: 0.02em;
  color: var(--text);
}

.page-contact .ct-ask__head .tag {
  grid-column: 2;
  justify-self: start;
}

.page-contact .ct-ask__body {
  display: grid;
  gap: 12px;
  padding: 16px 20px 22px;
  border-top: 1px solid var(--line);
}

.page-contact .ct-ask__scene,
.page-contact .ct-ask__act {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
}

.page-contact .ct-ask__scene {
  color: var(--text);
}

.page-contact .ct-ask__act {
  color: var(--muted);
}

/* ---------- 书面通信地址 ---------- */
.page-contact .ct-write {
  position: relative;
  overflow: hidden;
  margin-top: clamp(44px, 8vw, 88px);
  padding: clamp(26px, 4.5vw, 48px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink);
}

.page-contact .ct-write__bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(38, 49, 63, 0.55) 1px, transparent 1px),
    linear-gradient(90deg, rgba(38, 49, 63, 0.55) 1px, transparent 1px);
  background-size: 42px 42px;
  -webkit-mask-image: radial-gradient(circle at 26% 42%, rgba(0, 0, 0, 0.95), transparent 74%);
  mask-image: radial-gradient(circle at 26% 42%, rgba(0, 0, 0, 0.95), transparent 74%);
  pointer-events: none;
}

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

.page-contact .ct-write__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(22px, 3.6vw, 34px);
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-contact .ct-write__addr {
  margin: 22px 0 0;
  padding-left: 18px;
  border-left: 3px solid var(--cyan);
  font-family: var(--font-mono);
  font-size: clamp(15px, 2.2vw, 21px);
  line-height: 1.7;
  letter-spacing: 0.01em;
  color: var(--text);
}

.page-contact .ct-write__note {
  margin: 20px 0 0;
  max-width: 56ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .ct-write__region {
  display: inline-block;
  margin: 22px 0 0;
  padding: 7px 14px;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* ---------- 协作咨询 ---------- */
.page-contact .ct-collab {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  margin-top: clamp(44px, 8vw, 88px);
}

.page-contact .ct-collab__lede {
  margin: 14px 0 0;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .ct-steps {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .ct-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 6px 16px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--violet);
  background: linear-gradient(90deg, rgba(27, 36, 49, 0.75) 0%, rgba(16, 22, 31, 0.55) 100%);
  transition: border-color 0.25s ease;
}

.page-contact .ct-step:hover {
  border-color: var(--ct-line-soft);
  border-left-color: var(--cyan);
}

.page-contact .ct-step__idx {
  grid-row: span 2;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--violet);
}

.page-contact .ct-step h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: 0.02em;
  color: var(--text);
}

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

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

.page-contact .ct-collab__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line);
}

.page-contact .ct-collab__links {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .ct-collab__links a,
.page-contact .ct-foot-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 225, 214, 0.4);
}

.page-contact .ct-collab__links a:hover,
.page-contact .ct-foot-note a:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 响应时段 ---------- */
.page-contact .ct-hours {
  margin-top: clamp(44px, 8vw, 88px);
}

.page-contact .ct-hours__lede {
  margin: 14px 0 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .ct-scale {
  padding: 0 24px;
  margin-top: clamp(26px, 4vw, 40px);
}

.page-contact .ct-scale__track {
  position: relative;
  height: 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
}

.page-contact .ct-scale__fill {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 12.5%;
  width: 75%;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(53, 225, 214, 0.3) 0%, var(--cyan) 50%, rgba(53, 225, 214, 0.3) 100%);
  box-shadow: 0 0 20px rgba(53, 225, 214, 0.42);
}

.page-contact .ct-scale__marks {
  position: relative;
  height: 56px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .ct-scale__marks li {
  position: absolute;
  top: 14px;
  transform: translateX(-50%);
  display: grid;
  gap: 3px;
  justify-items: center;
  text-align: center;
  white-space: nowrap;
}

.page-contact .ct-scale__marks b {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-contact .ct-scale__marks span {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--muted);
  opacity: 0.55;
  transition: opacity 0.2s ease, color 0.2s ease;
}

.page-contact .ct-scale__marks li:hover span {
  opacity: 1;
  color: var(--cyan);
}

.page-contact .ct-hours__tips {
  display: grid;
  gap: 12px;
  margin: clamp(26px, 4vw, 38px) 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .ct-hours__tips li {
  position: relative;
  padding-left: 24px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .ct-hours__tips li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 8px;
  width: 8px;
  height: 8px;
  border: 1px solid var(--cyan);
  transform: rotate(45deg);
}

.page-contact .ct-foot-note {
  margin: 28px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 桌面布局 ---------- */
@media (min-width: 860px) {
  .page-contact .ct-channels {
    grid-template-columns: 1fr 1fr;
  }

  .page-contact .ct-channel + .ct-channel {
    padding-left: clamp(22px, 3vw, 36px);
    border-left: 1px solid var(--line);
  }

  .page-contact .ct-ask-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .page-contact .ct-ask__head {
    grid-template-columns: auto 1fr;
  }
}

@media (max-width: 719px) {
  .page-contact .ct-scale__marks span {
    display: none;
  }

  .page-contact .ct-scale__marks {
    height: 40px;
  }

  .page-contact .ct-channel__value {
    font-size: 16px;
  }
}

@media (min-width: 960px) {
  .page-contact .ct-collab {
    grid-template-columns: 1fr 1fr;
    gap: clamp(30px, 4vw, 58px);
    align-items: start;
  }

  .page-contact .ct-collab__head {
    grid-column: 1 / -1;
  }

  .page-contact .ct-steps {
    grid-column: 1;
  }

  .page-contact .ct-collab__figure {
    grid-column: 2;
  }

  .page-contact .ct-collab__links {
    grid-column: 1 / -1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-ask,
  .page-contact .ct-step,
  .page-contact .ct-scale__marks span {
    transition: none;
  }

  .page-contact .ct-ask:hover {
    transform: none;
  }
}