.page-contact {
  --contact-clip: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 24px 100%, 0 calc(100% - 24px));
  --contact-line: rgba(192, 192, 192, 0.26);
  background: var(--light-gray);
  color: var(--black);
  overflow-x: hidden;
}

/* ---------- 公共标题 ---------- */
.page-contact .contact-head {
  margin-bottom: 40px;
}
.page-contact .contact-head .section-lead {
  max-width: 60ch;
  margin: 0;
  color: inherit;
  opacity: 0.82;
}
.page-contact .contact-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-data);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--vivid-green);
  margin: 0 0 14px;
}
.page-contact .contact-kicker::before {
  content: "";
  width: 26px;
  height: 2px;
  background: currentColor;
  display: inline-block;
  transform: skewX(-24deg);
}
.page-contact .contact-kicker--orange {
  color: var(--orange);
}
.page-contact .contact-kicker--blue {
  color: var(--tech-blue);
}
.page-contact .contact-kicker--light {
  color: var(--white);
}
.page-contact .contact-head h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.9rem, 3.6vw, 3rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  margin: 0 0 10px;
}

/* ---------- 01 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  background: var(--black);
  color: var(--white);
  padding: 56px 0 0;
  overflow: hidden;
}
.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 230, 118, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 230, 118, 0.06) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}
.page-contact .contact-hero__inner {
  position: relative;
  display: grid;
  gap: 36px;
  align-items: center;
}
.page-contact .contact-hero__content {
  padding: 0 0 24px;
}
.page-contact .contact-hero__content .breadcrumbs {
  margin-bottom: 36px;
}
.page-contact .contact-hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(2.6rem, 7vw, 4.6rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  margin: 0 0 16px;
  position: relative;
  display: inline-block;
}
.page-contact .contact-hero h1::after {
  content: "";
  display: block;
  width: 42%;
  height: 6px;
  margin-top: 12px;
  background: var(--orange);
  clip-path: polygon(0 0, 100% 0, calc(100% - 12px) 100%, 0 100%);
}
.page-contact .contact-hero__lead {
  max-width: 46ch;
  font-size: 1.06rem;
  line-height: 1.75;
  color: var(--silver);
  margin: 0 0 28px;
}
.page-contact .contact-hero__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.page-contact .contact-hero__stage {
  position: relative;
  min-height: 320px;
}
.page-contact .contact-hero__image {
  position: relative;
  overflow: hidden;
  background: var(--dark-gray);
  clip-path: polygon(6% 0, 100% 0, 100% calc(100% - 28px), calc(100% - 18px) 100%, 0 100%);
}
.page-contact .contact-hero__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}
.page-contact .contact-hero__img::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(10, 92, 54, 0.24), transparent 55%);
}
.page-contact .contact-hero__slash {
  position: absolute;
  left: 10px;
  bottom: 52px;
  width: 96px;
  height: 96px;
  z-index: 2;
  background: var(--primary-green);
  clip-path: polygon(0 0, 100% 0, 0 100%);
}
.page-contact .contact-hero__slash::after {
  content: "";
  position: absolute;
  top: 20px;
  left: 20px;
  width: 48px;
  height: 48px;
  background: var(--orange);
  clip-path: polygon(0 0, 100% 0, 0 100%);
}

/* ---------- 02 联系渠道 ---------- */
.page-contact .contact-channels {
  padding: 80px 0 72px;
  background: var(--light-gray);
}
.page-contact .contact-channels__layout {
  display: grid;
  gap: 36px;
}
.page-contact .contact-channels__list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  outline: none;
}
.page-contact .channel-item {
  position: relative;
  display: grid;
  grid-template-columns: 44px 1fr 18px;
  gap: 16px;
  padding: 22px 18px 22px 0;
  background: var(--dark-gray);
  border-left: 4px solid var(--silver);
  clip-path: var(--contact-clip);
  color: var(--white);
  transition: transform 0.3s var(--ease-out), border-color 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}
.page-contact .channel-item.is-active,
.page-contact .channel-item:hover {
  border-left-color: var(--vivid-green);
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.16);
}
.page-contact .channel-item__id {
  font-family: var(--font-data);
  font-size: 0.78rem;
  color: var(--vivid-green);
  writing-mode: vertical-rl;
  text-align: center;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.page-contact .channel-item__body h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin: 0 0 4px;
  color: var(--white);
}
.page-contact .channel-item__value {
  font-family: var(--font-data);
  font-size: 0.94rem;
  color: var(--vivid-green);
  margin: 0 0 8px;
  overflow-wrap: anywhere;
}
.page-contact .channel-item__note {
  font-size: 0.86rem;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.62);
  margin: 0;
}
.page-contact .channel-item__mark {
  align-self: center;
  font-family: var(--font-heading);
  font-size: 1.3rem;
  color: var(--orange);
}
.page-contact .contact-channels__visual {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.page-contact .contact-channels__image {
  position: relative;
  overflow: hidden;
  min-height: 360px;
  background: var(--dark-gray);
  clip-path: polygon(14% 0, 100% 0, 100% 100%, 0 100%);
}
.page-contact .contact-channels__image::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(108deg, transparent 58%, rgba(10, 92, 54, 0.42) 100%);
  pointer-events: none;
}
.page-contact .contact-channels__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  min-height: 360px;
  aspect-ratio: 2 / 3;
  object-fit: cover;
}
.page-contact .contact-channels__legend {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  padding: 14px 18px;
  background: var(--black);
  border-left: 3px solid var(--tech-blue);
  color: var(--silver);
  font-size: 0.82rem;
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
}

/* ---------- 03 服务说明 ---------- */
.page-contact .contact-service {
  position: relative;
  padding: 80px 0;
  background: var(--black);
  color: var(--white);
  overflow: hidden;
}
.page-contact .contact-service::after {
  content: "";
  position: absolute;
  right: -140px;
  top: -140px;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(0, 230, 118, 0.12), transparent 70%);
  pointer-events: none;
}
.page-contact .contact-service__routes {
  position: relative;
  display: grid;
  gap: 0;
  margin-top: 48px;
}
.page-contact .route-item {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  padding: 22px 0 22px 64px;
  border-bottom: 1px solid var(--contact-line);
  transition: background 0.3s var(--ease-out);
}
.page-contact .route-item:last-child {
  border-bottom: 0;
}
.page-contact .route-item:hover {
  background: rgba(255, 255, 255, 0.03);
}
.page-contact .route-item__node {
  position: absolute;
  left: 14px;
  top: 30px;
  width: 20px;
  height: 20px;
  background: var(--vivid-green);
  clip-path: polygon(0 0, 100% 0, 100% 65%, 35% 100%);
}
.page-contact .route-item__node--blue {
  background: var(--tech-blue);
}
.page-contact .route-item__node--orange {
  background: var(--orange);
}
.page-contact .route-item__node--silver {
  background: var(--silver);
}
.page-contact .route-item__content h3 {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  margin: 0 0 4px;
  color: var(--white);
}
.page-contact .route-item__content p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.65);
  margin: 0;
  max-width: 56ch;
}
.page-contact .route-item__tag {
  justify-self: start;
  display: inline-block;
  font-family: var(--font-data);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  padding: 4px 10px;
  background: rgba(0, 230, 118, 0.12);
  color: var(--vivid-green);
  border: 1px solid rgba(0, 230, 118, 0.3);
  text-transform: uppercase;
}

/* ---------- 04 合作洽谈 ---------- */
.page-contact .contact-partners {
  position: relative;
  padding: 80px 0;
  background: var(--primary-green);
  color: var(--white);
  overflow: hidden;
}
.page-contact .contact-partners::before {
  content: "";
  position: absolute;
  width: 320px;
  height: 320px;
  right: -80px;
  bottom: -80px;
  background: repeating-linear-gradient(-45deg, rgba(255, 255, 255, 0.06) 0 12px, transparent 12px 24px);
  pointer-events: none;
}
.page-contact .contact-partners__lead {
  opacity: 0.82;
}
.page-contact .contact-partners__grid {
  display: grid;
  gap: 20px;
  margin-top: 40px;
  outline: none;
}
.page-contact .partner-card {
  position: relative;
  padding: 28px 22px 26px;
  background: rgba(255, 255, 255, 0.09);
  border: 1px solid rgba(255, 255, 255, 0.16);
  clip-path: var(--contact-clip);
  transition: background 0.3s var(--ease-out), transform 0.3s var(--ease-out);
}
.page-contact .partner-card.is-active,
.page-contact .partner-card:hover {
  background: rgba(255, 255, 255, 0.16);
  transform: translateY(-4px);
}
.page-contact .partner-card__num {
  display: block;
  font-family: var(--font-data);
  font-size: 2.4rem;
  font-weight: 500;
  color: var(--orange);
  line-height: 1;
  margin-bottom: 22px;
}
.page-contact .partner-card h3 {
  font-family: var(--font-heading);
  font-size: 1.28rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  margin: 0 0 10px;
}
.page-contact .partner-card p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.78);
  margin: 0;
}
.page-contact .contact-partners__note {
  margin-top: 32px;
  font-size: 0.9rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.78);
}
.page-contact .contact-partners__note strong {
  color: var(--white);
}

/* ---------- 05 订阅与支持 ---------- */
.page-contact .contact-subscribe {
  padding: 80px 0;
  background: var(--light-gray);
}
.page-contact .contact-subscribe__inner {
  display: grid;
  gap: 32px;
}
.page-contact .contact-subscribe__lead {
  font-size: 1.05rem;
  line-height: 1.75;
  color: rgba(11, 11, 11, 0.8);
  max-width: 52ch;
  margin: 0 0 20px;
}
.page-contact .contact-subscribe__note {
  font-size: 0.92rem;
  line-height: 1.75;
  color: rgba(11, 11, 11, 0.63);
  max-width: 64ch;
  margin: 0 0 22px;
  padding-left: 16px;
  border-left: 3px solid var(--primary-green);
}
.page-contact .contact-subscribe__note strong {
  color: var(--black);
}
.page-contact .contact-subscribe__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.page-contact .contact-subscribe__actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
  justify-content: flex-end;
}
.page-contact .contact-subscribe__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--primary-green);
  text-decoration: none;
  transition: gap 0.3s var(--ease-out), color 0.3s var(--ease-out);
}
.page-contact .contact-subscribe__link:hover {
  gap: 12px;
  color: var(--orange);
}

/* ---------- 桌面增强 ---------- */
@media (min-width: 720px) {
  .page-contact .route-item {
    grid-template-columns: 1fr auto;
    column-gap: 24px;
    align-items: center;
  }
  .page-contact .route-item__tag {
    justify-self: end;
  }
  .page-contact .contact-subscribe__actions {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
  }
}

@media (min-width: 920px) {
  .page-contact .contact-hero__inner {
    grid-template-columns: 1fr 0.9fr;
    gap: 56px;
    min-height: 560px;
  }
  .page-contact .contact-hero__content {
    padding: 40px 0 48px;
  }
  .page-contact .contact-hero__stage {
    min-height: 480px;
    align-self: stretch;
  }
  .page-contact .contact-hero__image {
    position: absolute;
    top: 60px;
    bottom: 0;
    left: 0;
    right: 0;
    min-height: 400px;
  }
  .page-contact .contact-hero__slash {
    left: 2px;
    bottom: 88px;
  }
  .page-contact .contact-channels__layout {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 48px;
    align-items: stretch;
  }
  .page-contact .contact-channels__list {
    gap: 14px;
  }
  .page-contact .contact-channels__image {
    min-height: 430px;
  }
  .page-contact .contact-channels__img {
    min-height: 430px;
  }
  .page-contact .contact-partners__grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-contact .contact-subscribe__inner {
    grid-template-columns: 1.2fr 0.8fr;
    align-items: end;
  }
  .page-contact .contact-subscribe__actions {
    flex-direction: column;
    align-items: flex-end;
  }
}

@media (min-width: 1280px) {
  .page-contact .contact-hero__image {
    clip-path: polygon(10% 0, 100% 0, 100% calc(100% - 36px), calc(100% - 24px) 100%, 0 100%);
  }
}