.page-contact {
  --card-pad: clamp(1.15rem, 3.2vw, 1.9rem);
  --panel-solid: #111736;
  --hairline: rgba(123, 95, 214, .34);
}

/* ---------- 首屏 ---------- */

.page-contact .section--hero {
  padding-top: clamp(1.5rem, 4vw, 2.4rem);
}

.page-contact .breadcrumbs {
  margin-bottom: clamp(1.4rem, 4vw, 2.4rem);
}

.page-contact .hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.2rem, 3vw, 2rem);
  align-items: end;
}

.page-contact .hero-lead h1 {
  margin: clamp(.5rem, 1.6vw, 1rem) 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.85rem, 6vw, 3.9rem);
  line-height: 1.16;
  letter-spacing: .05em;
  color: var(--text);
}

.page-contact .lede {
  margin: clamp(1rem, 2.4vw, 1.5rem) 0 0;
  max-width: 54ch;
  font-size: clamp(.95rem, 1.7vw, 1.06rem);
  line-height: 1.95;
  color: var(--text-dim);
}

.page-contact .hero-note {
  justify-self: start;
  color: var(--gold-soft);
}

.page-contact .banner-frame {
  margin-top: clamp(2rem, 5.5vw, 3.4rem);
  padding-top: clamp(.7rem, 1.8vw, 1.1rem);
  border-top: 1px solid var(--line);
}

.page-contact .contact-banner {
  --media-ratio: 8 / 3;
  margin: 0;
}

@media (min-width: 880px) {
  .page-contact .hero-grid {
    grid-template-columns: minmax(0, 1fr) auto;
  }
  .page-contact .hero-note {
    justify-self: end;
  }
}

/* ---------- 通用小节头 ---------- */

.page-contact .section-head {
  display: grid;
  gap: .7rem;
  max-width: 62ch;
  margin-bottom: clamp(1.6rem, 4vw, 2.6rem);
}

.page-contact .section-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 3.6vw, 2.3rem);
  line-height: 1.3;
  letter-spacing: .05em;
  color: var(--text);
}

.page-contact .section-note {
  margin: 0;
  font-size: .95rem;
  line-height: 1.9;
  color: var(--text-dim);
}

/* ---------- 对接档案卡 ---------- */

.page-contact .dossier-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1rem, 2.6vw, 1.5rem);
}

.page-contact .dossier {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: .9rem;
  padding: var(--card-pad);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(20, 26, 69, .9) 0%, rgba(10, 14, 42, .95) 100%);
  overflow: hidden;
  transition: transform .4s var(--ease), border-color .4s var(--ease);
}

.page-contact .dossier::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, var(--nebula) 0%, var(--gold) 55%, transparent 100%);
  opacity: .85;
}

.page-contact .dossier__tag {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin: 0;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .26em;
  color: var(--gold);
}

.page-contact .dossier__index {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .08em;
  color: var(--text-faint);
}

.page-contact .dossier__value {
  margin: 0;
  color: var(--text);
  word-break: break-word;
}

.page-contact .dossier__value--mono {
  font-family: var(--font-mono);
  font-size: clamp(.95rem, 2.2vw, 1.15rem);
  line-height: 1.6;
  letter-spacing: .02em;
}

.page-contact .dossier__value--serif {
  font-family: var(--font-display);
  font-size: clamp(1.02rem, 2.4vw, 1.2rem);
  line-height: 1.75;
  letter-spacing: .04em;
}

.page-contact .dossier__hint {
  margin: auto 0 0;
  padding-top: .9rem;
  border-top: 1px solid var(--line-soft);
  font-size: .86rem;
  line-height: 1.85;
  color: var(--text-faint);
}

@media (hover: hover) {
  .page-contact .dossier:hover {
    transform: translateY(-4px);
    border-color: var(--line);
  }
}

@media (min-width: 800px) {
  .page-contact .dossier-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 询价方式 ---------- */

.page-contact .subject-panel {
  display: grid;
  gap: clamp(1.3rem, 3.4vw, 2.2rem);
  padding: clamp(1.3rem, 3.6vw, 2.3rem);
  border: 1px solid var(--line-glass);
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(68, 53, 147, .26) 0%, rgba(20, 26, 69, .92) 48%, rgba(10, 14, 42, .96) 100%);
}

.page-contact .subject-copy h2 {
  margin: .55rem 0 .9rem;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3.4vw, 2.05rem);
  line-height: 1.35;
  letter-spacing: .05em;
  color: var(--text);
}

.page-contact .subject-copy p {
  margin: 0;
  max-width: 52ch;
  font-size: .95rem;
  line-height: 1.95;
  color: var(--text-dim);
}

.page-contact .subject-sample {
  padding: clamp(1rem, 2.6vw, 1.5rem);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  background: rgba(10, 14, 42, .62);
}

.page-contact .subject-sample__label {
  margin: 0 0 .6rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .26em;
  color: var(--gold-soft);
}

.page-contact .subject-sample__line {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(.82rem, 2vw, 1rem);
  line-height: 1.8;
  color: var(--white-custom);
  word-break: break-word;
}

.page-contact .subject-points {
  display: grid;
  gap: clamp(.9rem, 2.4vw, 1.3rem);
  margin: clamp(1.4rem, 3.4vw, 2rem) 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .subject-points li {
  position: relative;
  padding-left: 1.5rem;
  font-size: .93rem;
  line-height: 1.9;
  color: var(--text-dim);
}

.page-contact .subject-points li strong {
  color: var(--text);
  font-weight: 600;
}

.page-contact .subject-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .82em;
  width: .75rem;
  height: 1px;
  background: var(--gold);
}

@media (min-width: 800px) {
  .page-contact .subject-points {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .subject-panel {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: center;
  }
}

/* ---------- 首批订单五步 ---------- */

.page-contact .flow-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.8rem, 4.5vw, 3rem);
}

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

.page-contact .step {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(.85rem, 2.2vw, 1.25rem);
  padding-bottom: clamp(1.1rem, 3vw, 1.7rem);
}

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

.page-contact .step:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 1.18rem;
  top: 2.7rem;
  bottom: .35rem;
  width: 1px;
  background: linear-gradient(180deg, var(--line) 0%, transparent 100%);
}

.page-contact .step__dot {
  display: grid;
  place-items: center;
  width: 2.4rem;
  height: 2.4rem;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: radial-gradient(circle at 32% 26%, rgba(123, 95, 214, .5), rgba(10, 14, 42, .95) 70%);
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .04em;
  color: var(--gold-soft);
}

.page-contact .step__body {
  padding-top: .3rem;
}

.page-contact .step__body h3 {
  margin: 0 0 .5rem;
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 2.4vw, 1.28rem);
  line-height: 1.45;
  letter-spacing: .05em;
  color: var(--text);
}

.page-contact .step__body p {
  margin: 0;
  max-width: 48ch;
  font-size: .92rem;
  line-height: 1.9;
  color: var(--text-dim);
}

.page-contact .flow-media {
  --media-ratio: 10 / 7;
  margin: 0;
}

@media (min-width: 960px) {
  .page-contact .flow-grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: start;
  }
}

/* ---------- 合作类型 ---------- */

.page-contact .coop-list {
  display: grid;
  gap: clamp(.85rem, 2.2vw, 1.15rem);
}

.page-contact .coop {
  border: 1px solid var(--line-soft);
  border-left: 2px solid var(--nebula-deep);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(20, 26, 69, .72) 0%, rgba(10, 14, 42, .88) 100%);
  overflow: hidden;
  transition: border-color .35s var(--ease);
}

.page-contact .coop[open] {
  border-left-color: var(--gold);
}

.page-contact .coop summary {
  display: flex;
  align-items: center;
  gap: .9rem;
  padding: clamp(1rem, 2.6vw, 1.35rem) clamp(1.1rem, 3vw, 1.6rem);
  cursor: pointer;
  list-style: none;
}

.page-contact .coop summary::-webkit-details-marker {
  display: none;
}

.page-contact .coop summary:focus-visible {
  outline: 2px solid var(--gold-soft);
  outline-offset: -2px;
}

.page-contact .coop__tag {
  flex: 0 0 auto;
  padding: .28rem .62rem;
  border: 1px solid currentColor;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .14em;
}

.page-contact .coop--dealer .coop__tag {
  color: var(--copper-mid);
}

.page-contact .coop--project .coop__tag {
  color: var(--cyan-stock);
}

.page-contact .coop--custom .coop__tag {
  color: var(--nebula);
}

.page-contact .coop__title {
  font-family: var(--font-display);
  font-size: clamp(1rem, 2.3vw, 1.18rem);
  letter-spacing: .05em;
  color: var(--text);
}

.page-contact .coop__caret {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--gold-soft);
  transition: transform .3s var(--ease);
}

.page-contact .coop[open] .coop__caret {
  transform: rotate(45deg);
}

.page-contact .coop__body {
  display: grid;
  gap: .95rem;
  padding: 0 clamp(1.1rem, 3vw, 1.6rem) clamp(1.1rem, 3vw, 1.5rem);
}

.page-contact .coop__block h4 {
  margin: 0 0 .45rem;
  font-family: var(--font-mono);
  font-size: .74rem;
  font-weight: 400;
  letter-spacing: .22em;
  color: var(--gold-soft);
}

.page-contact .coop__block p,
.page-contact .coop__block ul {
  margin: 0;
  font-size: .9rem;
  line-height: 1.9;
  color: var(--text-dim);
}

.page-contact .coop__block ul {
  display: grid;
  gap: .35rem;
  padding: 0;
  list-style: none;
}

.page-contact .coop__block li {
  position: relative;
  padding-left: 1.1rem;
}

.page-contact .coop__block li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .85em;
  width: .55rem;
  height: 1px;
  background: var(--nebula);
}

@media (min-width: 760px) {
  .page-contact .coop__body {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem 1.6rem;
  }
}

/* ---------- 区域带 ---------- */

.page-contact .zone-table {
  display: grid;
  gap: 1px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: var(--line-soft);
  overflow: hidden;
}

.page-contact .zone-row {
  display: grid;
  gap: .45rem .9rem;
  padding: clamp(.95rem, 2.6vw, 1.35rem) clamp(1rem, 3vw, 1.5rem);
  background: var(--ink-abyss);
}

.page-contact .zone-row:nth-child(odd) {
  background: rgba(20, 26, 69, .62);
}

.page-contact .zone-name {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1rem, 2.2vw, 1.12rem);
  letter-spacing: .06em;
  color: var(--text);
}

.page-contact .zone-install {
  margin: 0;
  font-size: .9rem;
  line-height: 1.85;
  color: var(--text-dim);
}

.page-contact .zone-window {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .86rem;
  letter-spacing: .02em;
  color: var(--cyan-plan);
  white-space: nowrap;
}

.page-contact .zone-footnote {
  margin: clamp(1.1rem, 3vw, 1.6rem) 0 0;
  max-width: 60ch;
  font-size: .9rem;
  line-height: 1.9;
  color: var(--text-faint);
}

@media (min-width: 820px) {
  .page-contact .zone-row {
    grid-template-columns: minmax(9rem, .8fr) minmax(0, 1.8fr) minmax(7rem, .6fr);
    align-items: baseline;
  }
}

/* ---------- 继续了解 ---------- */

.page-contact .next-panel {
  display: grid;
  gap: 1.2rem;
  padding-top: clamp(1.4rem, 3.6vw, 2.2rem);
  border-top: 1px solid var(--line);
}

.page-contact .next-panel h2 {
  margin: .5rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 3.2vw, 1.8rem);
  line-height: 1.35;
  letter-spacing: .05em;
  color: var(--text);
}

.page-contact .next-links {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
}

@media (min-width: 880px) {
  .page-contact .next-panel {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: 2rem;
  }
  .page-contact .next-links {
    justify-content: flex-end;
  }
}

/* ---------- 动效兼容 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-contact .dossier,
  .page-contact .coop,
  .page-contact .coop__caret {
    transition: none;
  }
  .page-contact .dossier:hover {
    transform: none;
  }
}