/* ================= 联络通道 page-contact ================= */

.page-contact {
  --ct-line-soft: rgba(28, 62, 107, .55);
  --ct-body: rgba(232, 244, 255, .78);
  --ct-body-dim: rgba(232, 244, 255, .7);
  padding-bottom: clamp(48px, 7vw, 100px);
}

.page-contact .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5em;
  padding-top: clamp(18px, 3vw, 32px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--steel);
}

.page-contact .breadcrumb a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .2s var(--ease-out);
}

.page-contact .breadcrumb a:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 首屏 ---------- */

.page-contact .ct-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  align-items: center;
  padding-top: clamp(22px, 4vw, 46px);
}

.page-contact .ct-kicker {
  margin: 0;
  color: var(--cyan);
}

.page-contact .ct-title {
  margin: 12px 0 0;
  font-size: clamp(2.6rem, 7vw, 5.2rem);
  font-weight: 900;
  font-style: italic;
  letter-spacing: -.03em;
  line-height: .98;
  color: var(--ice);
  text-shadow: 6px 6px 0 rgba(16, 36, 72, .9);
}

.page-contact .ct-title::after {
  content: "";
  display: block;
  width: clamp(72px, 14vw, 150px);
  height: 6px;
  margin-top: clamp(14px, 2vw, 22px);
  background: linear-gradient(90deg, var(--cyan) 0%, var(--lava) 100%);
}

.page-contact .ct-lede {
  max-width: 46ch;
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--ct-body);
}

.page-contact .ct-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-contact .ct-hero__figure,
.page-contact .ct-report__figure {
  position: relative;
  margin: 0;
  background: var(--bg-mid);
  border: 2px solid var(--edge);
  box-shadow: var(--shadow-hard);
}

.page-contact .ct-hero__figure img,
.page-contact .ct-report__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-contact .figcaption {
  padding: 12px 16px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--steel);
  background: var(--bg-deep);
  border-top: 1px solid var(--ct-line-soft);
}

/* ---------- 联络方式 ---------- */

.page-contact .ct-ways {
  padding-top: clamp(44px, 6vw, 96px);
}

.page-contact .ct-keys {
  display: grid;
  gap: clamp(16px, 2vw, 24px);
  margin-top: clamp(24px, 3.5vw, 44px);
}

.page-contact .ct-key {
  position: relative;
  padding: clamp(22px, 3.2vw, 40px);
  padding-left: clamp(30px, 4vw, 50px);
  background: var(--bg-console);
  border: 2px solid var(--edge);
  box-shadow: var(--shadow-hard);
  transition: transform .24s var(--ease-out), border-color .24s var(--ease-out);
}

.page-contact .ct-key::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 6px;
  background: var(--cyan);
}

.page-contact .ct-key:hover {
  transform: translateY(-3px);
  border-color: var(--edge-lit);
}

.page-contact .ct-key--lava::before {
  background: var(--lava);
}

.page-contact .ct-key--plain::before {
  background: var(--cyan-dim);
}

.page-contact .ct-key__label {
  margin: 0;
  color: var(--steel);
}

.page-contact .ct-key--cyan .ct-key__label {
  color: var(--cyan);
}

.page-contact .ct-key--lava .ct-key__label {
  color: var(--lava);
}

.page-contact .ct-key__value {
  margin: 10px 0 14px;
  font-family: var(--font-mono);
  font-size: clamp(1.02rem, 2.6vw, 1.55rem);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--ice);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .ct-key__value--mail {
  color: var(--cyan);
}

.page-contact .ct-key__value--tel {
  font-size: clamp(1.5rem, 4.4vw, 2.3rem);
  letter-spacing: .02em;
  color: var(--lava);
}

.page-contact .ct-key__value--addr {
  font-family: var(--font-sans);
  font-size: clamp(1.05rem, 2.6vw, 1.35rem);
  font-weight: 700;
  letter-spacing: .01em;
}

.page-contact .ct-key__desc {
  max-width: 54ch;
  margin: 0;
  font-size: .95rem;
  line-height: 1.85;
  color: var(--ct-body);
}

.page-contact .ct-key__note {
  margin: 14px 0 0;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--steel);
}

/* ---------- 反馈清单 ---------- */

.page-contact .ct-report__grid {
  display: grid;
  gap: clamp(26px, 4vw, 56px);
  align-items: start;
}

.page-contact .ct-report__title {
  margin: 10px 0 0;
  font-size: clamp(1.5rem, 3.2vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -.01em;
  line-height: 1.2;
  color: var(--ice);
}

.page-contact .ct-report__intro {
  max-width: 50ch;
  margin: 14px 0 0;
  font-size: .96rem;
  line-height: 1.85;
  color: var(--ct-body-dim);
}

.page-contact .ct-steps {
  list-style: none;
  margin: clamp(20px, 3vw, 32px) 0 0;
  padding: 0;
  border-top: 2px solid var(--edge);
}

.page-contact .ct-step {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: clamp(12px, 2vw, 24px);
  padding: clamp(16px, 2.4vw, 24px) 0;
  border-bottom: 1px solid var(--ct-line-soft);
}

.page-contact .ct-step__idx {
  padding-top: 4px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--cyan-dim);
}

.page-contact .ct-step__title {
  margin: 0 0 6px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--ice);
}

.page-contact .ct-step__text {
  margin: 0;
  font-size: .94rem;
  line-height: 1.8;
  color: var(--ct-body-dim);
}

/* ---------- 青海站点与备案 ---------- */

.page-contact .ct-region__grid {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  margin-top: clamp(24px, 3.5vw, 42px);
}

.page-contact .ct-region__card {
  padding: clamp(24px, 3.4vw, 44px);
  background: linear-gradient(140deg, var(--bg-console) 0%, var(--bg-mid) 100%);
  border: 2px solid var(--edge);
  box-shadow: var(--shadow-hard);
}

.page-contact .ct-region__card .label {
  color: var(--steel);
}

.page-contact .ct-region__icp {
  margin: 12px 0 16px;
  font-size: clamp(1.2rem, 3.6vw, 2rem);
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--cyan);
  overflow-wrap: anywhere;
}

.page-contact .ct-region__text {
  max-width: 58ch;
  margin: 0;
  font-size: .95rem;
  line-height: 1.9;
  color: var(--ct-body);
}

.page-contact .ct-region__stats {
  display: grid;
  gap: 1px;
  background: var(--edge);
  border: 2px solid var(--edge);
}

.page-contact .ct-stat {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 16px;
  padding: clamp(16px, 2.4vw, 24px);
  background: var(--bg-deep);
}

.page-contact .ct-stat__num {
  font-size: clamp(1.3rem, 3.4vw, 1.9rem);
  font-weight: 700;
  color: var(--cyan);
}

.page-contact .ct-stat__key {
  color: var(--steel);
  text-align: right;
}

/* ---------- 响应节奏 ---------- */

.page-contact .ct-rhythm__band {
  display: grid;
  gap: clamp(24px, 3.5vw, 48px);
  padding: clamp(26px, 4vw, 52px);
  background: var(--bg-mid);
  border: 2px solid var(--edge);
  border-left: 6px solid var(--lava);
  box-shadow: var(--shadow-hard);
}

.page-contact .ct-rhythm__title {
  margin: 10px 0 0;
  font-size: clamp(1.5rem, 3vw, 2.15rem);
  font-weight: 800;
  letter-spacing: -.01em;
  line-height: 1.2;
  color: var(--ice);
}

.page-contact .ct-rhythm__text {
  max-width: 56ch;
  margin: 14px 0 0;
  font-size: .96rem;
  line-height: 1.9;
  color: var(--ct-body);
}

.page-contact .ct-rhythm__list {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--edge);
  border: 2px solid var(--edge);
}

.page-contact .ct-rhythm__list li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 18px;
  background: var(--bg-deep);
  font-size: .88rem;
  line-height: 1.6;
  color: var(--ct-body-dim);
}

.page-contact .ct-rhythm__list .mono {
  font-size: clamp(1.2rem, 3vw, 1.5rem);
  font-weight: 700;
  color: var(--cyan);
}

.page-contact .ct-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin-top: clamp(24px, 3vw, 38px);
  padding-top: clamp(18px, 2.4vw, 26px);
  border-top: 1px solid var(--ct-line-soft);
}

.page-contact .ct-links a {
  padding-bottom: 3px;
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--steel);
  text-decoration: none;
  border-bottom: 1px solid var(--edge);
  transition: color .2s var(--ease-out), border-color .2s var(--ease-out);
}

.page-contact .ct-links a:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* ---------- 桌面增强 ---------- */

@media (min-width: 900px) {
  .page-contact .ct-hero__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    align-items: end;
  }

  .page-contact .ct-hero__figure {
    transform: translateY(clamp(12px, 2vw, 30px));
  }

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

  .page-contact .ct-key--plain {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr);
    gap: clamp(16px, 3vw, 44px);
    align-items: start;
  }

  .page-contact .ct-key--plain .ct-key__label {
    grid-column: 1 / -1;
  }

  .page-contact .ct-key--plain .ct-key__value {
    margin-top: 0;
  }

  .page-contact .ct-region__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: stretch;
  }
}

@media (min-width: 960px) {
  .page-contact .ct-report__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
  }

  .page-contact .ct-report__figure {
    margin-top: clamp(20px, 4vw, 56px);
  }

  .page-contact .ct-rhythm__band {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, .7fr);
    align-items: center;
  }
}

@media (max-width: 480px) {
  .page-contact .ct-step {
    grid-template-columns: 34px minmax(0, 1fr);
  }

  .page-contact .ct-key__value--mail {
    font-size: 1rem;
  }

  .page-contact .ct-stat {
    justify-content: flex-start;
  }

  .page-contact .ct-stat__key {
    text-align: left;
  }
}