.page-contact {
  --pc-gap: clamp(16px, 2.4vw, 26px);
  --pc-pad: clamp(18px, 2.6vw, 30px);
  --pc-ink-soft: rgba(12, 38, 32, .74);
  --pc-ink-line: rgba(12, 38, 32, .22);
}

/* 面包屑 */
.page-contact .breadcrumb {
  margin: 18px 0 20px;
}
.page-contact .breadcrumb ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted);
}
.page-contact .breadcrumb a {
  color: var(--muted);
  text-decoration: none;
  transition: color 180ms var(--ease);
}
.page-contact .breadcrumb a:hover {
  color: var(--cyan);
}
.page-contact .breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--line);
}

/* 首屏声明 */
.page-contact .contact-hero {
  position: relative;
  padding: clamp(20px, 4vw, 40px) 0 clamp(24px, 4vw, 46px);
  background:
    radial-gradient(120% 90% at 92% 4%, rgba(34, 232, 200, .13), transparent 62%),
    radial-gradient(90% 80% at 2% 98%, rgba(255, 138, 61, .07), transparent 60%);
  border-bottom: 1px solid var(--line);
}
.page-contact .contact-hero h1 {
  margin: 14px 0 18px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(28px, 5.4vw, 46px);
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--text);
  max-width: 24em;
}
.page-contact .contact-hero .lede {
  max-width: 46em;
  margin: 0;
}
.page-contact .hero-tags {
  margin-top: 22px;
}

/* 区块骨架 */
.page-contact .section {
  padding: clamp(40px, 6vw, 76px) 0;
}
.page-contact .section + .section {
  border-top: 1px solid var(--line);
}
.page-contact .section-head h2 {
  margin: 8px 0 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(22px, 3.2vw, 32px);
  line-height: 1.25;
  letter-spacing: -.01em;
  color: var(--text);
}
.page-contact .section-head__meta {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* 三条通道 */
.page-contact .channel-grid {
  display: grid;
  gap: var(--pc-gap);
  margin-top: clamp(22px, 3vw, 34px);
}
.page-contact .channel-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: calc(var(--pc-pad) + 20px) var(--pc-pad) var(--pc-pad);
  border: 1px solid var(--line);
  transition: transform 200ms var(--ease), border-color 200ms var(--ease), box-shadow 200ms var(--ease);
}
.page-contact .channel-card .stamp {
  top: 14px;
  left: var(--pc-pad);
}
.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within {
  transform: translateY(-3px);
  border-color: var(--cyan);
  box-shadow: 0 26px 46px -34px rgba(0, 0, 0, .95);
}
.page-contact .channel-card h3 {
  margin: 0;
  font-family: var(--font-head);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--paper-ink);
}
.page-contact .channel-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--pc-ink-soft);
}
.page-contact .check-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}
.page-contact .check-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--pc-ink-soft);
}
.page-contact .check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--panel);
}
.page-contact .channel-card .channel-sla {
  margin: auto 0 0;
  align-self: flex-start;
  padding: 6px 12px;
  border: 1px dashed var(--pc-ink-line);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--paper-ink);
  transition: background-color 200ms var(--ease), border-color 200ms var(--ease), color 200ms var(--ease);
}
.page-contact .channel-card:hover .channel-sla,
.page-contact .channel-card:focus-within .channel-sla {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--ink);
}

/* 联系方式 */
.page-contact .contact-grid {
  display: grid;
  gap: var(--pc-gap);
  margin-top: clamp(22px, 3vw, 34px);
}
.page-contact .info-card {
  padding: var(--pc-pad);
  display: grid;
  gap: 10px;
  align-content: start;
}
.page-contact .info-label {
  margin: 0;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--pc-ink-line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: rgba(12, 38, 32, .62);
}
.page-contact .info-value {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.45;
  color: var(--paper-ink);
  overflow-wrap: anywhere;
}
.page-contact .info-note {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--pc-ink-soft);
}
.page-contact .icp-tag {
  margin: 20px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--muted);
}

/* 悬挂式反馈入口 */
.page-contact .entry-split {
  display: grid;
  gap: clamp(20px, 3vw, 36px);
}
.page-contact .entry-copy h2 {
  margin: 8px 0 14px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(22px, 3.2vw, 32px);
  line-height: 1.25;
  letter-spacing: -.01em;
  color: var(--text);
}
.page-contact .entry-copy > p {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
  max-width: 40em;
}
.page-contact .step-list {
  counter-reset: pc-step;
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: grid;
  gap: 14px;
}
.page-contact .step-list li {
  position: relative;
  padding-left: 44px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text);
}
.page-contact .step-list li::before {
  counter-increment: pc-step;
  content: counter(pc-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan);
}
.page-contact .step-list strong {
  color: var(--cyan-soft);
  font-weight: 700;
}
.page-contact .entry-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin: 0;
}
.page-contact .entry-figure {
  margin: 0;
  position: relative;
}
.page-contact .entry-figure img,
.page-contact .process-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  object-fit: cover;
  box-shadow: var(--shadow-paper);
}

/* 处理流程节点 */
.page-contact .node-bar {
  list-style: none;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  display: grid;
  gap: var(--pc-gap);
}
.page-contact .node {
  position: relative;
  padding: 18px 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  outline: none;
  transition: transform 200ms var(--ease), border-color 200ms var(--ease), box-shadow 200ms var(--ease);
}
.page-contact .node:hover {
  border-color: var(--cyan);
  transform: translateY(-2px);
}
.page-contact .node:focus-visible {
  border-color: var(--orange);
  box-shadow: 0 0 0 3px rgba(255, 138, 61, .22);
}
.page-contact .node__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--cyan);
  transition: color 180ms var(--ease);
}
.page-contact .node:hover .node__num,
.page-contact .node:focus-visible .node__num {
  color: var(--orange);
}
.page-contact .node__title {
  margin: 8px 0;
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text);
}
.page-contact .node__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}
.page-contact .process-figure {
  margin: clamp(24px, 3vw, 36px) 0 0;
}

/* 合作对接 */
.page-contact .coop-grid {
  display: grid;
  gap: var(--pc-gap);
  margin-top: clamp(22px, 3vw, 34px);
}
.page-contact .coop-card {
  padding: var(--pc-pad);
  display: grid;
  gap: 10px;
  align-content: start;
}
.page-contact .coop-card h3 {
  margin: 0;
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text);
}
.page-contact .coop-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text);
  opacity: .8;
}
.page-contact .coop-card .coop-meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--cyan-soft);
  opacity: 1;
  padding-top: 8px;
  border-top: 1px solid var(--line);
}
.page-contact .coop-cta {
  margin-top: clamp(22px, 3vw, 32px);
  padding: var(--pc-pad);
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  align-items: center;
  justify-content: space-between;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: linear-gradient(120deg, rgba(34, 232, 200, .09), rgba(255, 138, 61, .07));
}
.page-contact .coop-cta p {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
}

/* 继续浏览 */
.page-contact .quick-links {
  list-style: none;
  margin: clamp(18px, 3vw, 28px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}
.page-contact .quick-links li {
  border-bottom: 1px solid var(--line);
}
.page-contact .quick-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 2px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text);
  text-decoration: none;
  transition: color 180ms var(--ease), padding-left 180ms var(--ease);
}
.page-contact .quick-links a::after {
  content: "→";
  font-family: var(--font-mono);
  color: var(--cyan);
}
.page-contact .quick-links a:hover {
  color: var(--cyan);
  padding-left: 12px;
}

/* 悬挂反馈胶囊 */
.page-contact .feedback-capsule:hover,
.page-contact .feedback-capsule:focus-visible {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--ink);
}

/* 响应式 */
@media (min-width: 720px) {
  .page-contact .contact-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .page-contact .coop-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 880px) {
  .page-contact .channel-grid {
    grid-template-columns: 1.08fr 1fr .92fr;
  }
  .page-contact .coop-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 920px) {
  .page-contact .contact-grid {
    grid-template-columns: 1.3fr 1fr 1fr;
  }
  .page-contact .entry-split {
    grid-template-columns: 6fr 5fr;
    align-items: start;
  }
  .page-contact .node-bar {
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    background-image: linear-gradient(90deg, var(--cyan) 0%, var(--cyan-soft) 38%, var(--line) 100%);
    background-repeat: no-repeat;
    background-size: 100% 2px;
    background-position: left top;
  }
  .page-contact .node {
    background: transparent;
    border: 0;
    border-radius: 0;
    padding: 28px 22px 0 0;
  }
  .page-contact .node::before {
    content: "";
    position: absolute;
    top: -8px;
    left: 0;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--ink);
    border: 2px solid var(--cyan);
  }
  .page-contact .node:hover,
  .page-contact .node:focus-visible {
    transform: none;
    box-shadow: none;
  }
  .page-contact .process-figure {
    margin-top: clamp(28px, 4vw, 44px);
  }
}

@media (max-width: 620px) {
  .page-contact .channel-card,
  .page-contact .info-card,
  .page-contact .coop-card {
    padding-left: 18px;
    padding-right: 18px;
  }
  .page-contact .coop-cta {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .node,
  .page-contact .quick-links a,
  .page-contact .breadcrumb a {
    transition: none;
  }
  .page-contact .channel-card:hover,
  .page-contact .channel-card:focus-within,
  .page-contact .node:hover {
    transform: none;
  }
  .page-contact .quick-links a:hover {
    padding-left: 2px;
  }
}