.page-contact {
  --co-line: rgba(44, 113, 96, .5);
  --co-glass: rgba(18, 96, 78, .3);
  --co-card-bg: linear-gradient(158deg, rgba(12, 59, 46, .96), rgba(7, 39, 30, .9));
  padding-block-end: clamp(3rem, 6vw, 6rem);
}

/* ---------- 首屏 ---------- */
.page-contact .co-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding-block: clamp(6.5rem, 13vh, 9.5rem) clamp(2rem, 5vw, 4rem);
}

.page-contact .co-hero::before {
  content: "";
  position: absolute;
  inset: -25% -12% auto -12%;
  height: 78%;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(58% 62% at 18% 22%, rgba(69, 244, 208, .2), transparent 70%),
    radial-gradient(48% 54% at 84% 4%, rgba(255, 90, 54, .14), transparent 72%),
    radial-gradient(40% 46% at 62% 62%, rgba(31, 199, 173, .12), transparent 74%);
  filter: blur(18px);
}

.page-contact .co-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(69, 244, 208, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(69, 244, 208, .07) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(72% 62% at 50% 18%, #000 0%, transparent 76%);
  mask-image: radial-gradient(72% 62% at 50% 18%, #000 0%, transparent 76%);
}

.page-contact .co-hero .shell {
  position: relative;
  z-index: 1;
}

.page-contact .co-hero__grid {
  display: grid;
  gap: clamp(2rem, 4vw, 3rem);
}

.page-contact .co-hero__lead h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6.2vw, 4.6rem);
  line-height: 1.04;
  letter-spacing: .01em;
  margin: .75rem 0 0;
  text-wrap: balance;
}

.page-contact .co-hero__lede {
  margin: 1.25rem 0 0;
  max-width: 36em;
  font-size: var(--step-body);
  line-height: 1.9;
  color: rgba(234, 247, 242, .82);
}

.page-contact .co-chips {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
}

.page-contact .co-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-top: 1.75rem;
}

.page-contact .co-hero__aside {
  position: relative;
}

.page-contact .co-hero__figure {
  margin: 0;
  border-radius: var(--radius-lg);
}

.page-contact .co-hero__stat {
  position: relative;
  margin: -2rem 0 0 clamp(1rem, 4vw, 2.25rem);
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-md);
}

.page-contact .co-hero__stat .data-figure {
  display: block;
  margin: .35rem 0 .5rem;
  font-family: var(--font-mono);
  font-size: clamp(1.9rem, 4.2vw, 2.8rem);
  line-height: 1;
  color: var(--neon);
}

.page-contact .co-hero__stat-note {
  margin: 0;
  font-size: var(--step-caption);
  line-height: 1.75;
  color: rgba(234, 247, 242, .74);
}

/* ---------- 合作方向 ---------- */
.page-contact .co-tracks__hint {
  margin: 0;
  max-width: 22em;
  font-size: var(--step-caption);
  line-height: 1.75;
  color: rgba(234, 247, 242, .66);
}

.page-contact .co-tablist {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-bottom: clamp(1rem, 2.5vw, 1.6rem);
}

.page-contact .co-tablist .co-tab {
  appearance: none;
  border: 1px solid var(--border-soft);
  background: rgba(18, 96, 78, .26);
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .08em;
  padding: .62rem 1.05rem;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-contact .co-tablist .co-tab:hover {
  border-color: var(--border-neon);
  transform: translateY(-1px);
}

.page-contact .co-tablist .co-tab[aria-selected="true"] {
  background: var(--neon);
  border-color: var(--neon);
  color: var(--ink-950);
  font-weight: 700;
  box-shadow: 0 0 26px -8px rgba(69, 244, 208, .8);
}

.page-contact .co-panel {
  padding: clamp(1.25rem, 3vw, 2rem);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-neon);
  background: var(--co-glass);
  backdrop-filter: blur(14px);
}

.page-contact .co-panel[hidden] {
  display: none;
}

.page-contact .co-panel__grid {
  display: grid;
  gap: 1.25rem;
}

.page-contact .co-panel__block p:not(.eyebrow) {
  margin: .5rem 0 0;
  font-size: var(--step-body);
  line-height: 1.85;
  color: rgba(234, 247, 242, .84);
}

.page-contact .co-panel__block .eyebrow {
  color: var(--amber);
}

.page-contact .co-panel__link {
  display: inline-block;
  margin-top: 1.25rem;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .06em;
  color: var(--neon);
  text-decoration: none;
  border-bottom: 1px solid rgba(69, 244, 208, .4);
  padding-bottom: .15rem;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .co-panel__link:hover {
  color: var(--mist);
  border-color: var(--mist);
}

/* ---------- 对接流程 ---------- */
.page-contact .co-process__grid {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
}

.page-contact .co-process__aside h2 {
  margin: .6rem 0 0;
}

.page-contact .co-process__lede {
  margin: 1rem 0 0;
  max-width: 30em;
  font-size: var(--step-body);
  line-height: 1.85;
  color: rgba(234, 247, 242, .78);
}

.page-contact .co-process__figure {
  margin: 1.75rem 0 0;
  border-radius: var(--radius-lg);
}

.page-contact .co-process__trace {
  display: block;
  width: 100%;
  max-width: 300px;
  height: auto;
  margin-top: 1rem;
}

.page-contact .co-process__trace path {
  stroke: rgba(69, 244, 208, .55);
}

.page-contact .co-process__trace circle {
  fill: var(--ember);
}

.page-contact .co-steps {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0 0 0 1.85rem;
  display: grid;
  gap: 1rem;
}

.page-contact .co-steps::before {
  content: "";
  position: absolute;
  left: .42rem;
  top: .9rem;
  bottom: .9rem;
  width: 1px;
  background: linear-gradient(180deg, var(--neon), rgba(69, 244, 208, .1));
}

.page-contact .co-step {
  position: relative;
  padding: 1.35rem 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-soft);
  background: var(--co-card-bg);
  box-shadow: var(--shadow-soft);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-contact .co-step::before {
  content: "";
  position: absolute;
  left: -1.85rem;
  top: 1.6rem;
  width: .55rem;
  height: .55rem;
  border-radius: 50%;
  background: var(--neon);
  box-shadow: 0 0 14px rgba(69, 244, 208, .9);
}

.page-contact .co-step:hover {
  transform: translateY(-3px);
  border-color: var(--border-neon);
}

.page-contact .co-step__num {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  color: var(--amber);
}

.page-contact .co-step h3 {
  margin: .5rem 0 .4rem;
  font-size: var(--step-h3);
}

.page-contact .co-step p {
  margin: 0;
  font-size: .95rem;
  line-height: 1.8;
  color: rgba(234, 247, 242, .78);
}

/* ---------- 服务响应 ---------- */
.page-contact .co-response__grid {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.5rem);
}

.page-contact .co-response__lead h2 {
  margin: .6rem 0 0;
}

.page-contact .co-response__lead p {
  margin: 1rem 0 1.5rem;
  max-width: 32em;
  font-size: var(--step-body);
  line-height: 1.85;
  color: rgba(234, 247, 242, .8);
}

.page-contact .co-response__cards {
  display: grid;
  gap: 1rem;
}

.page-contact .co-response__card {
  padding: clamp(1.25rem, 3vw, 1.75rem);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--ember);
  background: linear-gradient(150deg, rgba(12, 59, 46, .8), rgba(7, 39, 30, .72));
}

.page-contact .co-response__card p {
  margin: .6rem 0 0;
  font-size: .95rem;
  line-height: 1.82;
  color: rgba(234, 247, 242, .8);
}

.page-contact .co-response__time {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 3.4vw, 2rem);
  letter-spacing: .04em;
  color: var(--neon) !important;
}

.page-contact .co-response__list {
  margin: .75rem 0 0;
  padding-left: 1.1rem;
  display: grid;
  gap: .45rem;
  font-size: .95rem;
  line-height: 1.8;
  color: rgba(234, 247, 242, .8);
}

.page-contact .co-response__list li::marker {
  color: var(--teal);
}

/* ---------- 联系卡 ---------- */
.page-contact .co-contact__card {
  position: relative;
  overflow: hidden;
  padding: clamp(1.5rem, 4vw, 2.75rem);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-neon);
  background:
    radial-gradient(70% 90% at 88% 0%, rgba(69, 244, 208, .16), transparent 70%),
    linear-gradient(162deg, rgba(18, 96, 78, .52), rgba(4, 26, 20, .88));
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-soft);
}

.page-contact .co-contact__card::after {
  content: "";
  position: absolute;
  right: -60px;
  bottom: -80px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  border: 1px solid rgba(255, 90, 54, .28);
  pointer-events: none;
}

.page-contact .co-contact__intro h2 {
  margin: .6rem 0 0;
  max-width: 20em;
}

.page-contact .co-contact__intro p:not(.eyebrow) {
  margin: 1rem 0 0;
  max-width: 38em;
  font-size: var(--step-body);
  line-height: 1.85;
  color: rgba(234, 247, 242, .82);
}

.page-contact .co-contact__list {
  margin: 1.75rem 0 0;
  display: grid;
  gap: 1rem;
}

.page-contact .co-contact__item {
  padding: .9rem 0;
  border-top: 1px solid var(--co-line);
}

.page-contact .co-contact__key {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .14em;
  color: var(--amber);
}

.page-contact .co-contact__value {
  margin: .4rem 0 0;
  font-family: var(--font-mono);
  font-size: clamp(.95rem, 1.6vw, 1.1rem);
  line-height: 1.7;
  color: var(--mist);
  word-break: break-word;
}

.page-contact .co-contact__note {
  margin: 1.5rem 0 0;
  padding: 1rem 1.1rem;
  border-left: 3px solid var(--amber);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: rgba(4, 26, 20, .5);
  font-size: var(--step-caption);
  line-height: 1.85;
  color: rgba(234, 247, 242, .8);
}

.page-contact .co-contact__links {
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 1.5rem;
}

.page-contact .co-contact__links .co-panel__link {
  margin-top: 0;
}

/* ---------- 问答 ---------- */
.page-contact .co-faq {
  display: grid;
  gap: .75rem;
}

.page-contact .co-faq__item {
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  background: linear-gradient(150deg, rgba(12, 59, 46, .82), rgba(7, 39, 30, .74));
  transition: border-color var(--dur) var(--ease);
}

.page-contact .co-faq__item[open] {
  border-color: var(--border-neon);
}

.page-contact .co-faq__item summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.2rem;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--mist);
  list-style: none;
}

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

.page-contact .co-faq__item summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  line-height: 1.3;
  color: var(--neon);
  transition: transform var(--dur) var(--ease);
}

.page-contact .co-faq__item[open] summary::after {
  transform: rotate(45deg);
}

.page-contact .co-faq__item p {
  margin: 0;
  padding: 0 1.2rem 1.15rem;
  font-size: .95rem;
  line-height: 1.85;
  color: rgba(234, 247, 242, .8);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .co-panel__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }

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

  .page-contact .co-contact__list {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }
}

@media (min-width: 900px) {
  .page-contact .co-hero__grid {
    grid-template-columns: 1.12fr .88fr;
    align-items: start;
  }

  .page-contact .co-hero__stat {
    margin: -3.25rem 0 0 -3rem;
    max-width: 23rem;
  }

  .page-contact .co-process__grid {
    grid-template-columns: 5fr 7fr;
    align-items: start;
  }

  .page-contact .co-response__grid {
    grid-template-columns: 5fr 7fr;
    align-items: start;
  }

  .page-contact .co-contact__list {
    margin-top: 2rem;
  }
}

@media (min-width: 1100px) {
  .page-contact .co-process__aside {
    position: sticky;
    top: 7rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .co-step:hover,
  .page-contact .co-tablist .co-tab:hover {
    transform: none;
  }
}
<<<PAGE_CSS_END>>>