.page-contact {
  --pc-radius: 2px;
  background: var(--deep);
  color: var(--text);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding-top: clamp(18px, 3vw, 34px);
}

.page-contact .contact-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  margin-top: clamp(22px, 3.6vw, 44px);
}

.page-contact .contact-hero__lead {
  max-width: 48ch;
}

.page-contact .contact-hero__lead .title-xl {
  margin: 16px 0 20px;
  line-height: 1.05;
  letter-spacing: -0.012em;
}

.page-contact .contact-hero__lead .prose {
  color: var(--muted);
  font-size: clamp(14px, 1.15vw, 16px);
}

@media (min-width: 940px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.42fr) minmax(300px, 0.72fr);
    align-items: end;
  }
}

.page-contact .hero-stats {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(14, 58, 92, 0.55), rgba(11, 36, 54, 0.95));
  border-radius: var(--pc-radius);
}

.page-contact .hero-stats__cap {
  margin: 0;
  padding: 13px 20px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
}

.page-contact .hero-stats__list {
  margin: 0;
  padding: 4px 0;
}

.page-contact .hero-stat {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px 16px;
  padding: 14px 20px;
  border-bottom: 1px solid rgba(22, 55, 79, 0.55);
}

.page-contact .hero-stat:last-child {
  border-bottom: 0;
}

.page-contact .hero-stat dt {
  font-size: 13px;
  color: var(--muted);
}

.page-contact .hero-stat dd {
  margin: 0;
  font-size: 13.5px;
  color: var(--text);
}

.page-contact .hero-stat dd .data-num {
  color: var(--cyan);
  font-size: 20px;
  font-weight: 600;
  margin-right: 3px;
}

/* ---------- 区块头部 ---------- */
.page-contact .block-head {
  max-width: 62ch;
  margin-bottom: clamp(28px, 4vw, 52px);
}

.page-contact .block-head .title-lg {
  margin: 14px 0 16px;
  line-height: 1.14;
}

.page-contact .block-head__lead {
  margin: 0;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.85;
}

/* ---------- 合作方向 ---------- */
.page-contact .dir-grid {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--pc-radius);
}

@media (min-width: 700px) {
  .page-contact .dir-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1080px) {
  .page-contact .dir-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-contact .dir-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(24px, 2.8vw, 34px) clamp(20px, 2.2vw, 26px);
  background: var(--tactic);
  outline: none;
  transition: background 0.32s var(--ease);
}

.page-contact .dir-card::before {
  content: "";
  position: absolute;
  inset: 7px;
  border: 1px solid transparent;
  pointer-events: none;
  transition: border-color 0.32s var(--ease);
}

.page-contact .dir-card:hover,
.page-contact .dir-card:focus {
  background: #10344c;
}

.page-contact .dir-card:hover::before,
.page-contact .dir-card:focus::before {
  border-color: rgba(63, 224, 208, 0.32);
}

.page-contact .dir-card__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-contact .dir-card__title {
  margin: 0;
  font-size: clamp(19px, 1.7vw, 22px);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: 0.01em;
}

.page-contact .dir-card__line {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .dir-card__more {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.36s var(--ease);
}

.page-contact .dir-card__more > div {
  overflow: hidden;
  min-height: 0;
}

.page-contact .dir-card:hover .dir-card__more,
.page-contact .dir-card:focus .dir-card__more,
.page-contact .dir-card:focus-within .dir-card__more {
  grid-template-rows: 1fr;
}

.page-contact .dir-card__list {
  margin: 10px 0 0;
  padding: 14px 0 0;
  list-style: none;
  border-top: 1px solid rgba(22, 55, 79, 0.85);
  display: grid;
  gap: 9px;
}

.page-contact .dir-card__list li {
  position: relative;
  padding-left: 16px;
  font-size: 13px;
  line-height: 1.78;
  color: var(--muted);
}

.page-contact .dir-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 7px;
  height: 1px;
  background: var(--cyan);
}

@media (hover: none) {
  .page-contact .dir-card__more {
    grid-template-rows: 1fr;
  }
}

/* ---------- 合作流程 ---------- */
.page-contact .flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(18px, 2.4vw, 26px);
}

@media (min-width: 1024px) {
  .page-contact .flow {
    max-width: 760px;
  }
}

.page-contact .flow__step {
  position: relative;
  padding-left: clamp(40px, 5vw, 58px);
}

.page-contact .flow__step::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 34px;
  bottom: -26px;
  width: 1px;
  background: linear-gradient(180deg, rgba(63, 224, 208, 0.85), rgba(63, 224, 208, 0.08));
}

.page-contact .flow__step:last-child::before {
  content: none;
}

.page-contact .flow__dot {
  position: absolute;
  left: 8px;
  top: 18px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  border: 1px solid var(--cyan);
  background: var(--deep);
  box-shadow: 0 0 0 4px rgba(63, 224, 208, 0.07);
  z-index: 1;
}

.page-contact .flow__card {
  border: 1px solid var(--line);
  border-radius: var(--pc-radius);
  background: var(--tactic);
  transition: border-color 0.32s var(--ease);
}

.page-contact .flow__card:hover {
  border-color: rgba(63, 224, 208, 0.36);
}

.page-contact .flow__title {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}

.page-contact .flow__card .expand__trigger {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: clamp(16px, 2.2vw, 21px) clamp(16px, 2.4vw, 24px) 12px;
  background: none;
  border: 0;
  color: var(--text);
  font-family: inherit;
  font-size: clamp(16px, 1.5vw, 19px);
  font-weight: 600;
  line-height: 1.4;
  text-align: left;
  cursor: pointer;
}

.page-contact .flow__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-contact .flow__name {
  flex: 1;
}

.page-contact .flow__lead {
  margin: 0;
  padding: 0 clamp(16px, 2.4vw, 24px) clamp(16px, 2.2vw, 20px);
  font-size: 13.5px;
  line-height: 1.82;
  color: var(--muted);
}

.page-contact .flow__card .expand__inner {
  border-top: 1px solid rgba(22, 55, 79, 0.8);
}

.page-contact .flow__prep-label {
  margin: 15px clamp(16px, 2.4vw, 24px) 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-contact .flow__prep {
  margin: 0;
  padding: 0 clamp(16px, 2.4vw, 24px) 20px;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-contact .flow__prep li {
  position: relative;
  padding-left: 18px;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .flow__prep li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.74em;
  width: 9px;
  height: 1px;
  background: var(--line);
}

/* 展开符号 */
.page-contact .pc-sign {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
  color: var(--cyan);
}

.page-contact .pc-sign::before,
.page-contact .pc-sign::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: currentColor;
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}

.page-contact .pc-sign::before {
  width: 14px;
  height: 1px;
  transform: translate(-50%, -50%);
}

.page-contact .pc-sign::after {
  width: 1px;
  height: 14px;
  transform: translate(-50%, -50%);
}

.page-contact .expand[data-open] .pc-sign::after {
  transform: translate(-50%, -50%) scaleY(0);
  opacity: 0;
}

/* ---------- 联系渠道 ---------- */
.page-contact .channels__banner {
  margin-bottom: clamp(22px, 3.2vw, 38px);
  border: 1px solid var(--line);
  border-radius: var(--pc-radius);
  overflow: hidden;
  background: var(--tactic);
}

.page-contact .channels__banner img {
  display: block;
  width: 100%;
  height: clamp(140px, 22vw, 240px);
  object-fit: cover;
}

.page-contact .channel-grid {
  display: grid;
  gap: clamp(14px, 2vw, 20px);
}

@media (min-width: 760px) {
  .page-contact .channel-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-contact .channel-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(20px, 2.6vw, 28px);
  border: 1px solid rgba(63, 224, 208, 0.4);
  border-radius: var(--pc-radius);
  background: linear-gradient(160deg, rgba(11, 36, 54, 0.96), rgba(5, 18, 31, 0.96));
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.page-contact .channel-card:hover {
  border-color: var(--cyan);
  transform: translateY(-2px);
}

.page-contact .channel-card__k {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-contact .channel-card__v {
  margin: 0;
  font-size: clamp(15px, 1.4vw, 17px);
  font-weight: 600;
  line-height: 1.62;
  color: var(--text);
  word-break: break-word;
}

.page-contact .channel-card__v a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid rgba(63, 224, 208, 0.45);
  transition: color 0.24s var(--ease), border-color 0.24s var(--ease);
}

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

.page-contact .channel-card__note {
  margin: 0;
  font-size: 13px;
  line-height: 1.82;
  color: var(--muted);
}

.page-contact .channels__foot {
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  font-size: 13px;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .channels__foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(63, 224, 208, 0.4);
}

/* ---------- 服务响应 ---------- */
.page-contact .sla {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--pc-radius);
}

@media (min-width: 760px) {
  .page-contact .sla {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-contact .sla__item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: clamp(24px, 3.2vw, 38px) clamp(18px, 2.4vw, 30px);
  background: var(--deep);
}

.page-contact .sla__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(34px, 4.6vw, 52px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
}

.page-contact .sla__num--coral {
  color: var(--coral);
}

.page-contact .sla__label {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text);
}

.page-contact .sla__note {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 合作生态 ---------- */
.page-contact .eco-figure {
  margin: 0 0 clamp(28px, 4vw, 48px);
  border: 1px solid var(--line);
  border-radius: var(--pc-radius);
  background: var(--tactic);
  overflow: hidden;
}

.page-contact .eco-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1200 / 800;
  object-fit: cover;
}

.page-contact .eco-figure figcaption {
  padding: 14px clamp(16px, 2.4vw, 24px);
  border-top: 1px solid var(--line);
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .eco-grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
}

@media (min-width: 900px) {
  .page-contact .eco-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.95fr);
  }
}

.page-contact .eco-visual {
  border: 1px solid var(--line);
  border-radius: var(--pc-radius);
  background: radial-gradient(circle at 50% 50%, rgba(14, 58, 92, 0.55), rgba(5, 18, 31, 0.95) 72%);
  padding: clamp(14px, 2.4vw, 26px);
}

.page-contact .eco-svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-contact .eco-node {
  fill: var(--tactic);
  stroke: rgba(22, 55, 79, 0.95);
  stroke-width: 1.5;
}

.page-contact .eco-node--core {
  fill: rgba(63, 224, 208, 0.14);
  stroke: var(--cyan);
  stroke-width: 1.5;
}

.page-contact .eco-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  fill: var(--muted);
}

.page-contact .eco-label--core {
  fill: var(--text);
  font-weight: 600;
  font-size: 13px;
}

.page-contact .eco-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.page-contact .eco-list li {
  display: grid;
  gap: 5px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .eco-list__k {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-contact .eco-list__v {
  font-size: 13.5px;
  line-height: 1.82;
  color: var(--muted);
}

.page-contact .eco-more {
  margin: 18px 0 0;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .eco-more a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(63, 224, 208, 0.4);
}

/* ---------- 常见问题 ---------- */
.page-contact .qa-list {
  display: grid;
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-contact .qa {
  background: var(--deep);
  padding: 0 clamp(14px, 2vw, 22px);
  transition: background 0.3s var(--ease);
}

.page-contact .qa:hover {
  background: rgba(11, 36, 54, 0.6);
}

.page-contact .qa__q {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}

.page-contact .qa .expand__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: 100%;
  padding: clamp(18px, 2.4vw, 24px) 0;
  background: none;
  border: 0;
  color: var(--text);
  font-family: inherit;
  font-size: clamp(15px, 1.4vw, 17px);
  font-weight: 600;
  line-height: 1.6;
  text-align: left;
  cursor: pointer;
}

.page-contact .qa .expand__inner {
  padding-bottom: 22px;
}

.page-contact .qa .expand__inner p {
  margin: 0;
  max-width: 66ch;
  font-size: 13.5px;
  line-height: 1.9;
  color: var(--muted);
}

/* ---------- 尾部条带 ---------- */
.page-contact .cta-band {
  margin-top: clamp(44px, 6vw, 84px);
  padding: clamp(36px, 5.4vw, 68px) 0;
  background: linear-gradient(118deg, var(--mid) 0%, rgba(5, 18, 31, 0.92) 52%, rgba(63, 224, 208, 0.16) 100%);
  border-top: 1px solid rgba(63, 224, 208, 0.42);
  border-bottom: 1px solid rgba(63, 224, 208, 0.16);
}

.page-contact .cta-band__inner {
  max-width: 64ch;
}

.page-contact .cta-band .title-lg {
  margin: 12px 0 16px;
  line-height: 1.14;
}

.page-contact .cta-band__lead {
  margin: 0 0 24px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .cta-band__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-contact .cta-band__actions .btn {
  text-decoration: none;
}

@media (max-width: 560px) {
  .page-contact .cta-band__actions .btn {
    flex: 1 1 auto;
    text-align: center;
  }
}

/* ---------- 移动端细节 ---------- */
@media (max-width: 640px) {
  .page-contact .contact-hero__lead .title-xl {
    font-size: clamp(26px, 8.4vw, 34px);
    line-height: 1.12;
  }

  .page-contact .hero-stat {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .page-contact .flow__step {
    padding-left: 34px;
  }

  .page-contact .flow__step::before {
    left: 13px;
  }

  .page-contact .flow__dot {
    left: 6px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .dir-card,
  .page-contact .dir-card::before,
  .page-contact .dir-card__more,
  .page-contact .channel-card,
  .page-contact .pc-sign::before,
  .page-contact .pc-sign::after,
  .page-contact .flow__card,
  .page-contact .qa {
    transition: none;
  }
}
</main>