.page-contact {
  --co-rail: 300px;
  --co-gap: clamp(1.75rem, 4vw, 4rem);
  position: relative;
  color: var(--text);
}

/* ---------- 首屏 ---------- */
.page-contact .co-hero {
  position: relative;
  padding: clamp(2rem, 6vw, 4.5rem) 0 clamp(1.5rem, 3vw, 2.5rem);
  overflow: hidden;
}

.page-contact .co-hero::before {
  content: "";
  position: absolute;
  inset: -30% -15% auto -35%;
  height: 130%;
  background:
    radial-gradient(58% 46% at 20% 22%, rgba(107, 77, 246, .3), transparent 70%),
    radial-gradient(46% 42% at 84% 8%, rgba(0, 233, 212, .16), transparent 72%),
    linear-gradient(118deg, rgba(142, 31, 63, .22) 0%, transparent 46%);
  pointer-events: none;
  z-index: 0;
}

.page-contact .co-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.75rem, 4vw, 3rem);
  align-items: center;
}

.page-contact .co-hero__title {
  margin: .75rem 0 1rem;
  font-size: clamp(1.9rem, 7.4vw, 3.4rem);
  line-height: 1.06;
  letter-spacing: -.022em;
  text-wrap: balance;
}

.page-contact .co-hero__lede {
  max-width: 34em;
}

.page-contact .co-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-top: 1.5rem;
}

.page-contact .co-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 1.5rem;
  margin: 1.75rem 0 0;
  padding: 0;
  list-style: none;
  font-size: .8125rem;
  color: var(--muted);
}

.page-contact .co-hero__facts .mono {
  color: var(--cyan);
  font-size: 1.0625rem;
  margin-right: .3em;
}

.page-contact .co-hero__media {
  margin: 0;
  border-radius: var(--radius-lg);
  transform: rotate(-1.4deg);
}

.page-contact .co-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumbs {
  position: relative;
  z-index: 1;
  margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
}

/* ---------- 主布局 ---------- */
.page-contact .co-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 3.5rem);
  align-items: start;
}

.page-contact .co-rail {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.page-contact .co-rail__block {
  padding: 1.25rem 1.25rem 1.4rem;
  background: linear-gradient(155deg, rgba(22, 35, 58, .88), rgba(12, 20, 36, .88));
  border-radius: var(--radius);
  border: 1px solid rgba(147, 162, 189, .14);
}

.page-contact .co-rail__block .section-label {
  margin-bottom: .9rem;
}

.page-contact .co-index {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: co-idx;
}

.page-contact .co-index__item {
  counter-increment: co-idx;
}

.page-contact .co-index__item + .co-index__item {
  border-top: 1px solid var(--line);
}

.page-contact .co-index__item a {
  display: block;
  padding: .7rem 0 .7rem 1.9rem;
  position: relative;
  color: var(--text-soft);
  text-decoration: none;
  font-size: .9375rem;
  transition: color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.page-contact .co-index__item a::before {
  content: counter(co-idx, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: .8rem;
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .08em;
  color: var(--muted);
}

.page-contact .co-index__item a:hover,
.page-contact .co-index__item a:focus-visible {
  color: var(--cyan);
  padding-left: 2.15rem;
}

.page-contact .co-rail__steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: .75rem;
  font-size: .8125rem;
  color: var(--muted);
  line-height: 1.55;
}

.page-contact .co-rail__steps li {
  display: flex;
  gap: .7rem;
  align-items: baseline;
}

.page-contact .co-rail__num {
  flex: none;
  color: var(--cyan);
  font-size: .75rem;
  letter-spacing: .06em;
}

.page-contact .co-rail__note {
  padding: 1rem 0 0;
  border-top: 1px solid var(--line);
  font-size: .8125rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .co-rail__note p {
  margin: 0;
}

/* ---------- 内容区块 ---------- */
.page-contact .co-body {
  display: flex;
  flex-direction: column;
  gap: clamp(3rem, 7vw, 5.5rem);
  min-width: 0;
}

.page-contact .co-section__title {
  margin: .65rem 0 .85rem;
  font-size: clamp(1.55rem, 4.4vw, 2.35rem);
  line-height: 1.15;
  letter-spacing: -.014em;
}

.page-contact .co-section__lede {
  max-width: 40em;
  margin: 0 0 1.75rem;
  color: var(--text-soft);
  line-height: 1.78;
}

/* ---------- 合作方向卡片 ---------- */
.page-contact .co-directions {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
}

.page-contact .co-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: .7rem;
  padding: 1.6rem 1.4rem 1.5rem;
  background: linear-gradient(158deg, rgba(22, 35, 58, .92), rgba(12, 20, 36, .94));
  border: 1px solid rgba(147, 162, 189, .13);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .co-card::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--cyan);
}

.page-contact .co-card--violet::after { background: var(--violet); }
.page-contact .co-card--flare::after { background: var(--flare); }
.page-contact .co-card--wine::after { background: var(--wine); }

.page-contact .co-card:hover {
  transform: translateY(-3px);
  border-color: rgba(0, 233, 212, .3);
}

.page-contact .co-card__num {
  font-size: .75rem;
  letter-spacing: .16em;
  color: var(--muted);
}

.page-contact .co-card__title {
  margin: 0;
  font-size: 1.25rem;
  letter-spacing: -.005em;
}

.page-contact .co-card__text {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.78;
  color: var(--text-soft);
}

.page-contact .co-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin: .4rem 0 0;
  padding: 0;
  list-style: none;
}

/* ---------- 流程 ---------- */
.page-contact .co-flow__media {
  margin: 0 0 1.75rem;
}

.page-contact .co-flow__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-contact .co-flow {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: co-stage;
}

.page-contact .co-stage {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: .55rem;
  padding: 1.35rem 1.25rem 1.5rem;
  background: var(--panel);
  border-radius: var(--radius);
  border-top: 2px solid var(--cyan-deep);
}

.page-contact .co-stage:nth-child(2) { border-top-color: var(--violet); }
.page-contact .co-stage:nth-child(3) { border-top-color: var(--blue); }
.page-contact .co-stage:nth-child(4) { border-top-color: var(--flare); }

.page-contact .co-stage__num {
  font-size: .75rem;
  letter-spacing: .18em;
  color: var(--muted);
}

.page-contact .co-stage__title {
  margin: 0;
  font-size: 1.0625rem;
}

.page-contact .co-stage__summary {
  margin: 0;
  font-size: .875rem;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-contact .co-stage__time {
  margin: auto 0 0;
  padding-top: .8rem;
  font-size: .75rem;
  letter-spacing: .04em;
  color: var(--cyan);
}

/* ---------- 联系方式 ---------- */
.page-contact .co-contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: .9rem;
}

.page-contact .co-contact__row {
  display: grid;
  gap: .35rem;
  padding: 1.3rem 1.4rem;
  background: var(--panel);
  border-left: 3px solid var(--cyan);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.page-contact .co-contact__label {
  font-size: .6875rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-contact .co-contact__value {
  font-size: clamp(1.0625rem, 3.6vw, 1.3125rem);
  color: var(--text);
  word-break: break-word;
  user-select: all;
}

.page-contact .co-contact__hint {
  font-size: .8125rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .co-scenes {
  margin-top: 2rem;
  padding: 1.5rem 1.4rem;
  background: linear-gradient(160deg, rgba(22, 35, 58, .78), rgba(12, 20, 36, .9));
  border-radius: var(--radius-lg);
  border: 1px solid rgba(147, 162, 189, .13);
}

.page-contact .co-scenes__title {
  margin: 0 0 1.1rem;
  font-size: 1rem;
  letter-spacing: -.005em;
}

.page-contact .co-scenes__list {
  margin: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: .95rem;
}

.page-contact .co-scenes__item {
  display: grid;
  gap: .25rem;
}

.page-contact .co-scenes__item dt {
  font-size: .875rem;
  font-weight: 600;
  color: var(--cyan);
}

.page-contact .co-scenes__item dd {
  margin: 0;
  font-size: .875rem;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-contact .co-scenes__item dd a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 233, 212, .4);
  transition: border-color var(--dur) var(--ease);
}

.page-contact .co-scenes__item dd a:hover,
.page-contact .co-scenes__item dd a:focus-visible {
  border-bottom-color: var(--cyan);
}

/* ---------- 表单字段说明 ---------- */
.page-contact .co-fields {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: .7rem;
}

.page-contact .co-field {
  display: grid;
  gap: .3rem;
  padding: 1.05rem 1.2rem;
  background: var(--panel);
  border-radius: var(--radius-sm);
  border-left: 2px solid rgba(0, 233, 212, .45);
}

.page-contact .co-field__key {
  font-size: .9375rem;
  color: var(--text);
}

.page-contact .co-field__key::before {
  content: "›";
  margin-right: .5em;
  color: var(--cyan);
}

.page-contact .co-field__desc {
  font-size: .8438rem;
  line-height: 1.72;
  color: var(--muted);
}

.page-contact .co-fields__note {
  margin: 1.35rem 0 0;
  padding: .95rem 1.2rem;
  font-size: .8125rem;
  line-height: 1.7;
  color: var(--text-soft);
  background: rgba(0, 233, 212, .07);
  border-left: 2px solid var(--cyan);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* ---------- 站点信息 ---------- */
.page-contact .co-section--meta {
  padding-bottom: 1rem;
}

.page-contact .co-meta {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: .75rem;
  padding: 1.25rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-contact .co-meta__item {
  display: grid;
  gap: .25rem;
}

.page-contact .co-meta__label {
  font-size: .6875rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-contact .co-meta__value {
  font-size: .9375rem;
  color: var(--text);
  word-break: break-word;
}

.page-contact .co-meta__note {
  margin: 1.25rem 0 0;
  max-width: 42em;
  font-size: .8125rem;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 桌面端 ---------- */
@media (min-width: 720px) {
  .page-contact .co-hero__facts {
    gap: .5rem 2.25rem;
  }

  .page-contact .co-directions {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.1rem;
  }

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

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

  .page-contact .co-scenes__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.15rem 2rem;
  }

  .page-contact .co-meta {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.25rem 2rem;
  }
}

@media (min-width: 1000px) {
  .page-contact .co-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: clamp(2.5rem, 5vw, 5rem);
  }

  .page-contact .co-layout {
    grid-template-columns: var(--co-rail) minmax(0, 1fr);
    gap: var(--co-gap);
  }

  .page-contact .co-rail {
    position: sticky;
    top: calc(var(--header-h-compact) + 1.75rem);
  }

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

  .page-contact .co-fields {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: .8rem 1rem;
  }

  .page-contact .co-field:last-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1280px) {
  .page-contact .co-hero__media {
    margin-right: -1.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .co-card,
  .page-contact .co-index__item a {
    transition: none;
  }
  .page-contact .co-card:hover {
    transform: none;
  }
}
</main>