.page-contact {
  --ct-gap: clamp(24px, 5vw, 56px);
  --ct-block: clamp(40px, 7vw, 88px);
  display: block;
  background: var(--c-paper);
  color: var(--c-text);
  font-family: var(--font-body);
  line-height: 1.75;
  overflow-x: hidden;
}

.page-contact .breadcrumbs {
  padding: calc(var(--ct-gap) * 0.6) 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.page-contact .breadcrumb-item {
  color: var(--c-indigo-soft);
}

.page-contact .breadcrumb-item[aria-current="page"],
.page-contact .breadcrumb-item:last-child {
  color: var(--c-text);
}

.page-contact .breadcrumb-sep {
  margin: 0 8px;
  color: var(--c-indigo-soft);
}

/* ---------- 首屏 ---------- */
.page-contact .ct-hero {
  padding: var(--ct-gap) 0 var(--ct-block);
  border-bottom: var(--line);
}

.page-contact .ct-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--ct-gap);
}

.page-contact .ct-eyebrow {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-orange-text);
}

.page-contact h1 {
  margin: 0 0 22px;
  font-family: var(--font-heading);
  font-size: clamp(34px, 6.2vw, 76px);
  line-height: 1.06;
  letter-spacing: -0.01em;
  font-weight: 600;
  color: var(--c-indigo);
}

.page-contact .ct-lede {
  max-width: 640px;
  margin: 0;
  font-size: 16px;
  color: var(--c-text);
}

.page-contact .ct-hero-aside {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--c-grid);
  padding-top: 18px;
}

.page-contact .ct-sla-row {
  display: grid;
  grid-template-columns: 12px 1fr auto;
  align-items: center;
  gap: 10px;
  padding: 14px 0;
  border-bottom: 1px solid var(--c-grid);
  font-family: var(--font-mono);
  font-size: 13px;
}

.page-contact .ct-sla-label {
  color: var(--c-indigo-soft);
}

.page-contact .ct-sla-val {
  color: var(--c-indigo);
  font-weight: 600;
}

.page-contact .ct-sla-note {
  margin: 14px 0 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--c-indigo-soft);
}

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

.page-contact .ct-hero-link {
  display: inline-block;
  padding: 9px 14px;
  border: 1px solid var(--c-indigo);
  border-radius: var(--radius);
  font-family: var(--font-heading);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--c-indigo);
  text-decoration: none;
  transition: background-color 180ms var(--ease), color 180ms var(--ease);
}

.page-contact .ct-hero-link:hover {
  background: var(--c-indigo);
  color: var(--c-text-dark);
}

/* ---------- 章节标题 ---------- */
.page-contact .ct-section-head {
  margin-bottom: clamp(24px, 4vw, 40px);
}

.page-contact .ct-index {
  display: inline-block;
  margin-bottom: 14px;
  padding: 4px 10px;
  background: var(--c-grid);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-indigo);
}

.page-contact .ct-index--light {
  background: rgba(0, 229, 199, 0.14);
  color: var(--c-cyan);
}

.page-contact h2 {
  margin: 0 0 12px;
  font-family: var(--font-heading);
  font-size: clamp(26px, 3.6vw, 44px);
  line-height: 1.18;
  font-weight: 600;
  color: var(--c-indigo);
}

.page-contact .ct-section-head p {
  max-width: var(--w-narrow);
  margin: 0;
  font-size: 16px;
  color: var(--c-indigo-soft);
}

/* ---------- 流程 ---------- */
.page-contact .ct-flow {
  padding: var(--ct-block) 0;
  background: #fff;
  border-bottom: var(--line);
}

.page-contact .ct-flow-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 48px);
}

.page-contact .ct-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-contact .ct-steps::before {
  content: "";
  position: absolute;
  left: 21px;
  top: 22px;
  bottom: 26px;
  width: 1px;
  background: var(--c-grid);
}

.page-contact .ct-step {
  position: relative;
  padding-left: 64px;
  padding-bottom: 30px;
}

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

.page-contact .ct-step-no {
  position: absolute;
  left: 0;
  top: 0;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  background: var(--c-indigo);
  color: var(--c-text-dark);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 14px;
  z-index: 1;
}

.page-contact .ct-step--active .ct-step-no {
  background: var(--c-orange);
  color: #fff;
}

.page-contact .ct-step h3 {
  margin: 6px 0 8px;
  font-family: var(--font-heading);
  font-size: 20px;
  letter-spacing: 0.02em;
  color: var(--c-indigo);
}

.page-contact .ct-step p {
  margin: 0 0 8px;
  font-size: 15.5px;
  color: var(--c-text);
}

.page-contact .ct-step-meta {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--c-orange-text);
}

.page-contact .ct-flow-figure {
  margin: 0;
}

.page-contact .ct-flow-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  border: var(--line);
  border-radius: var(--radius);
}

.page-contact .ct-flow-figure figcaption {
  margin-top: 12px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--c-indigo-soft);
  border-left: 2px solid var(--c-cyan);
  padding-left: 10px;
}

/* ---------- 资料准备 ---------- */
.page-contact .ct-prepare {
  padding: var(--ct-block) 0;
  border-bottom: var(--line);
}

.page-contact .ct-prepare-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 48px);
}

.page-contact .ct-checklist h3,
.page-contact .ct-tier h3 {
  margin: 0 0 6px;
  font-family: var(--font-heading);
  font-size: 20px;
  letter-spacing: 0.02em;
  color: var(--c-indigo);
}

.page-contact .ct-check {
  position: relative;
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--c-grid);
  cursor: pointer;
}

.page-contact .ct-check:first-of-type {
  border-top: 1px solid var(--c-grid);
}

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

.page-contact .ct-check-box {
  width: 18px;
  height: 18px;
  margin-top: 5px;
  border: 1px solid var(--c-indigo-soft);
  border-radius: var(--radius);
  position: relative;
  transition: background-color 160ms var(--ease), border-color 160ms var(--ease);
}

.page-contact .ct-check input:checked + .ct-check-box {
  background: var(--c-cyan);
  border-color: var(--c-cyan);
}

.page-contact .ct-check input:checked + .ct-check-box::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 1px;
  width: 5px;
  height: 10px;
  border-right: 2px solid var(--c-ink);
  border-bottom: 2px solid var(--c-ink);
  transform: rotate(40deg);
}

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

.page-contact .ct-check-text b {
  display: block;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--c-indigo);
  margin-bottom: 3px;
}

.page-contact .ct-check-text span {
  display: block;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-indigo-soft);
}

.page-contact .ct-check-hint {
  margin: 18px 0 0;
  font-size: 13.5px;
  color: var(--c-indigo-soft);
}

.page-contact .ct-check-hint a,
.page-contact .ct-tier-foot a,
.page-contact .ct-closing a {
  color: var(--c-orange-text);
  text-decoration: none;
  border-bottom: 1px solid rgba(198, 67, 26, 0.35);
}

.page-contact .ct-check-hint a:hover,
.page-contact .ct-tier-foot a:hover,
.page-contact .ct-closing a:hover {
  border-bottom-color: var(--c-orange-text);
}

.page-contact .ct-tier-intro {
  margin: 0 0 18px;
  font-size: 14px;
  color: var(--c-indigo-soft);
}

.page-contact .ct-opt {
  display: block;
  cursor: pointer;
  margin-bottom: 10px;
}

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

.page-contact .ct-opt-body {
  display: block;
  padding: 14px 16px;
  border: 1px solid var(--c-grid);
  border-left: 3px solid var(--c-indigo-soft);
  border-radius: var(--radius);
  background: #fff;
  transition: border-color 180ms var(--ease), background-color 180ms var(--ease);
}

.page-contact .ct-opt input:checked + .ct-opt-body {
  border-color: var(--c-orange);
  border-left-color: var(--c-orange);
  background: rgba(255, 107, 53, 0.06);
}

.page-contact .ct-opt input:focus-visible + .ct-opt-body {
  outline: 2px solid var(--c-orange);
  outline-offset: 2px;
}

.page-contact .ct-opt-name {
  display: block;
  font-family: var(--font-heading);
  font-size: 17px;
  letter-spacing: 0.03em;
  color: var(--c-indigo);
}

.page-contact .ct-opt-range {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--c-orange-text);
  margin: 2px 0 4px;
}

.page-contact .ct-opt-note {
  display: block;
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-indigo-soft);
}

.page-contact .ct-tier-foot {
  margin: 16px 0 0;
  font-size: 13px;
  color: var(--c-indigo-soft);
}

/* ---------- 响应时限 ---------- */
.page-contact .ct-response {
  padding: var(--ct-block) 0;
  background: #fff;
  border-bottom: var(--line);
}

.page-contact .ct-resp-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3vw, 28px);
}

.page-contact .ct-resp-card {
  padding: clamp(22px, 3vw, 34px);
  border: 1px solid var(--c-grid);
  border-radius: var(--radius);
  background: var(--c-paper);
}

.page-contact .ct-resp-card--urgent {
  background: #fff;
  border-color: rgba(255, 107, 53, 0.4);
}

.page-contact .ct-resp-head {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 16px;
}

.page-contact .ct-resp-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-indigo-soft);
}

.page-contact .ct-resp-figure {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 0 0 18px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--c-grid);
}

.page-contact .ct-resp-num {
  font-family: var(--font-mono);
  font-size: clamp(64px, 11vw, 112px);
  line-height: 0.86;
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--c-indigo);
}

.page-contact .ct-resp-card--urgent .ct-resp-num {
  color: var(--c-orange-text);
}

.page-contact .ct-resp-unit {
  font-family: var(--font-heading);
  font-size: clamp(17px, 2.2vw, 24px);
  letter-spacing: 0.04em;
  color: var(--c-indigo);
}

.page-contact .ct-resp-body {
  margin: 0 0 16px;
  font-size: 15.5px;
  color: var(--c-text);
}

.page-contact .ct-resp-foot {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--c-indigo-soft);
}

.page-contact .ct-resp-strip {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  margin-top: clamp(24px, 3vw, 34px);
  padding: 20px 22px;
  background: var(--c-indigo);
  border-radius: var(--radius);
}

.page-contact .ct-strip-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-cyan);
}

.page-contact .ct-resp-strip p {
  margin: 0;
  font-size: 15px;
  color: var(--c-text-dark);
}

/* ---------- 联系渠道 ---------- */
.page-contact .ct-channels {
  padding: var(--ct-block) 0;
  background: var(--c-indigo);
  color: var(--c-text-dark);
}

.page-contact .ct-channels-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 52px);
}

.page-contact .ct-channels h2 {
  color: var(--c-text-dark);
}

.page-contact .ct-channels-lede {
  margin: 0 0 clamp(22px, 3vw, 32px);
  font-size: 15.5px;
  color: rgba(233, 238, 247, 0.72);
}

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

.page-contact .ct-channel {
  padding: 18px 0;
  border-top: 1px solid rgba(233, 238, 247, 0.16);
}

.page-contact .ct-channel:last-child {
  border-bottom: 1px solid rgba(233, 238, 247, 0.16);
}

.page-contact .ct-channel dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-cyan);
  margin-bottom: 8px;
}

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

.page-contact .ct-channel-value {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: clamp(17px, 2.4vw, 24px);
  letter-spacing: -0.01em;
  color: #fff;
  word-break: break-all;
}

.page-contact .ct-channel-value--sm {
  font-size: clamp(15px, 1.8vw, 18px);
  line-height: 1.5;
  word-break: break-word;
}

.page-contact .ct-channel-use {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(233, 238, 247, 0.76);
  max-width: 620px;
}

.page-contact .ct-channels-figure {
  margin: 0;
}

.page-contact .ct-channels-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid rgba(233, 238, 247, 0.16);
}

.page-contact .ct-channels-figure figcaption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.6;
  color: rgba(233, 238, 247, 0.7);
}

/* ---------- 样品与来访 ---------- */
.page-contact .ct-sample {
  padding: var(--ct-block) 0;
}

.page-contact .ct-sample-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3vw, 28px);
}

.page-contact .ct-sample-card {
  padding: 22px 20px 24px;
  border: 1px solid var(--c-grid);
  border-top: 3px solid var(--c-indigo-mid);
  border-radius: var(--radius);
  background: #fff;
}

.page-contact .ct-sample-card:nth-child(2) {
  border-top-color: var(--c-orange);
}

.page-contact .ct-sample-card:nth-child(3) {
  border-top-color: var(--c-cyan);
}

.page-contact .ct-sample-no {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--c-indigo-soft);
  margin-bottom: 10px;
}

.page-contact .ct-sample-card h3 {
  margin: 0 0 8px;
  font-family: var(--font-heading);
  font-size: 18px;
  letter-spacing: 0.02em;
  color: var(--c-indigo);
}

.page-contact .ct-sample-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--c-text);
}

.page-contact .ct-closing {
  margin-top: clamp(26px, 4vw, 42px);
  padding-top: 20px;
  border-top: 1px solid var(--c-grid);
}

.page-contact .ct-closing p {
  max-width: var(--w-narrow);
  margin: 0;
  font-size: 15px;
  color: var(--c-indigo-soft);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-contact .ct-resp-grid,
  .page-contact .ct-sample-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .ct-resp-strip {
    grid-template-columns: 132px minmax(0, 1fr);
    align-items: center;
    gap: 22px;
  }
}

@media (min-width: 900px) {
  .page-contact .ct-hero-grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: start;
    gap: clamp(32px, 4vw, 64px);
  }

  .page-contact .ct-hero-aside {
    border-top: 0;
    border-left: 1px solid var(--c-grid);
    padding-top: 0;
    padding-left: 28px;
  }

  .page-contact .ct-flow-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-contact .ct-prepare-grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-contact .ct-channels-grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 1040px) {
  .page-contact .ct-sample-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-hero-link,
  .page-contact .ct-check-box,
  .page-contact .ct-opt-body {
    transition: none;
  }
}