.page-contact {
  --pc-cut: 18px;
  --pc-gap: clamp(22px, 3vw, 40px);
  background: var(--ink);
  color: var(--strong);
}

/* ============ 首屏 ============ */
.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: calc(var(--header-h) + clamp(24px, 4vw, 52px)) 0 clamp(44px, 7vw, 92px);
  background:
    radial-gradient(120% 90% at 84% 0%, rgba(255, 107, 26, 0.18) 0%, rgba(7, 35, 28, 0) 60%),
    linear-gradient(180deg, var(--ink-deep) 0%, var(--ink) 58%, var(--ink-3) 100%);
}

.page-contact .contact-hero-media {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.page-contact .contact-hero-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
  filter: saturate(0.65) contrast(1.05);
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(4, 25, 20, 0.5) 0%, rgba(7, 35, 28, 0.9) 62%, var(--ink) 100%);
}

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

.page-contact .contact-hero h1 {
  max-width: 19ch;
  margin: clamp(14px, 2vw, 22px) 0 0;
}

.page-contact .contact-hero-lede {
  max-width: 58ch;
  margin: clamp(16px, 2.2vw, 24px) 0 0;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.78;
  color: var(--steel-light);
}

.page-contact .contact-hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 20px clamp(30px, 5vw, 68px);
  margin: clamp(30px, 4.5vw, 52px) 0 0;
  padding: clamp(20px, 2.6vw, 28px) 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-contact .contact-hero-facts li {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.page-contact .fact-num {
  font-family: var(--font-mono);
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1;
  color: var(--orange);
  font-variant-numeric: tabular-nums;
}

.page-contact .fact-label {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* ============ 主体布局 ============ */
.page-contact .contact-main {
  padding-bottom: clamp(56px, 8vw, 112px);
  background: var(--ink);
}

.page-contact .contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pc-gap);
  align-items: start;
}

.page-contact .contact-aside {
  display: flex;
  flex-direction: column;
  gap: 26px;
  min-width: 0;
}

.page-contact .contact-toc {
  display: flex;
  flex-direction: row;
  gap: 6px;
  overflow-x: auto;
  padding: 0 0 12px;
  border-bottom: 1px solid var(--line);
  scrollbar-width: none;
}

.page-contact .contact-toc::-webkit-scrollbar {
  display: none;
}

.page-contact .contact-toc .toc-link {
  display: block;
  flex: 0 0 auto;
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  line-height: 1.4;
  white-space: nowrap;
  color: var(--muted);
  text-decoration: none;
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-contact .contact-toc .toc-link:hover,
.page-contact .contact-toc .toc-link:focus-visible {
  color: var(--paper);
  background: rgba(255, 107, 26, 0.12);
}

.page-contact .contact-toc .toc-link[aria-current="true"] {
  color: var(--orange);
  background: rgba(255, 107, 26, 0.16);
}

.page-contact .contact-aside-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
}

.page-contact .contact-aside-links a {
  display: block;
  padding: 10px 0 10px 14px;
  border-left: 2px solid var(--line-strong);
  font-size: 14px;
  line-height: 1.6;
  color: var(--steel-light);
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-contact .contact-aside-links a:hover,
.page-contact .contact-aside-links a:focus-visible {
  border-color: var(--orange);
  color: var(--paper);
}

/* ============ 卡片堆叠 ============ */
.page-contact .contact-stack {
  display: flex;
  flex-direction: column;
  gap: var(--pc-gap);
  min-width: 0;
}

.page-contact .contact-card {
  position: relative;
  min-width: 0;
  padding: clamp(24px, 3.4vw, 46px);
  background: var(--ink-2);
  border: 1px solid var(--line);
  clip-path: polygon(
    0 0,
    calc(100% - var(--pc-cut)) 0,
    100% var(--pc-cut),
    100% 100%,
    0 100%
  );
}

.page-contact .contact-card--indigo {
  background: var(--indigo);
  border-color: rgba(206, 218, 224, 0.22);
}

.page-contact .contact-card--violet {
  background: var(--violet);
  border-color: rgba(206, 218, 224, 0.22);
}

.page-contact .contact-card .h-section {
  margin: 10px 0 0;
}

.page-contact .card-lede {
  max-width: 64ch;
  margin: 16px 0 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--steel-light);
}

.page-contact .contact-card--indigo .card-lede,
.page-contact .contact-card--violet .card-lede {
  color: rgba(245, 247, 246, 0.82);
}

/* ============ 渠道列表 ============ */
.page-contact .channel-list {
  display: grid;
  gap: 16px;
  margin: clamp(24px, 3vw, 34px) 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .channel-item {
  position: relative;
  padding: 20px 22px;
  background: var(--ink-3);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%);
}

.page-contact .channel-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--steel);
}

.page-contact .channel-value {
  display: block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.55;
  letter-spacing: 0.01em;
  color: var(--paper);
  word-break: break-word;
  font-variant-numeric: tabular-nums;
}

.page-contact .channel-desc {
  display: block;
  margin-top: 12px;
  font-size: 15px;
  line-height: 1.76;
  color: var(--steel-light);
}

/* ============ 邮件模板 ============ */
.page-contact .mail-template {
  margin: clamp(24px, 3vw, 32px) 0 0;
  padding: 20px 22px;
  background: rgba(4, 25, 20, 0.5);
  border-left: 3px solid var(--orange);
}

.page-contact .mail-template-line {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(13px, 1.45vw, 15px);
  line-height: 1.8;
  color: var(--paper);
  word-break: break-word;
}

.page-contact .mail-template-line .hl {
  color: var(--orange);
}

.page-contact .mail-template-note {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* ============ 反馈清单 ============ */
.page-contact .contact-figure {
  margin: clamp(24px, 3vw, 32px) 0 0;
}

.page-contact .contact-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid var(--line);
}

.page-contact .contact-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--muted);
}

.page-contact .checklist {
  margin: clamp(24px, 3vw, 32px) 0 0;
  padding: 0;
  list-style: none;
  counter-reset: pc-check;
}

.page-contact .checklist li {
  position: relative;
  counter-increment: pc-check;
  padding: 18px 0 18px 46px;
  border-top: 1px solid var(--line);
}

.page-contact .checklist li:last-child {
  border-bottom: 1px solid var(--line);
}

.page-contact .checklist li::before {
  content: counter(pc-check, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 19px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--orange);
  font-variant-numeric: tabular-nums;
}

.page-contact .checklist-title {
  display: block;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-contact .checklist-desc {
  display: block;
  margin-top: 7px;
  font-size: 15px;
  line-height: 1.76;
  color: var(--steel-light);
}

/* ============ 合作列表 ============ */
.page-contact .partner-list {
  display: grid;
  gap: 12px;
  margin: clamp(24px, 3vw, 34px) 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .partner-list li {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: baseline;
  padding: 16px 18px;
  background: rgba(4, 25, 20, 0.38);
  border: 1px solid rgba(206, 218, 224, 0.18);
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%);
}

.page-contact .partner-tag {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--orange-soft);
}

.page-contact .partner-text {
  flex: 1 1 220px;
  min-width: 0;
  font-size: 15px;
  line-height: 1.76;
  color: rgba(245, 247, 246, 0.84);
}

.page-contact .partner-contact {
  margin: clamp(24px, 3vw, 32px) 0 0;
  padding: 20px 22px;
  background: rgba(4, 25, 20, 0.5);
  border-left: 3px solid var(--orange);
}

.page-contact .partner-mail {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(14px, 1.5vw, 17px);
  color: var(--paper);
  word-break: break-word;
}

.page-contact .partner-contact-note {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* ============ 地址 ============ */
.page-contact .addr-block {
  margin: clamp(22px, 3vw, 30px) 0 0;
  padding: 20px 22px;
  font-size: clamp(16px, 1.7vw, 19px);
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--paper);
  background: var(--ink-3);
  border-left: 3px solid var(--orange);
  word-break: break-word;
}

.page-contact .contact-map {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  margin: clamp(24px, 3vw, 34px) 0 0;
}

.page-contact .contact-map path {
  fill: none;
  stroke: var(--line-strong);
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
}

.page-contact .contact-map .map-track {
  stroke: rgba(255, 107, 26, 0.55);
  stroke-dasharray: 6 8;
}

.page-contact .contact-map circle {
  fill: var(--orange);
}

.page-contact .addr-note {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.76;
  color: var(--muted);
}

/* ============ 回到顶部 ============ */
.page-contact .to-top {
  margin: 0 auto clamp(28px, 4vw, 48px);
}

/* ============ 平板及以上 ============ */
@media (min-width: 720px) {
  .page-contact .channel-list {
    gap: 18px;
  }

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

  .page-contact .partner-list li:first-child {
    grid-column: 1 / -1;
  }
}

/* ============ 桌面：左侧固定线索轴 ============ */
@media (min-width: 960px) {
  .page-contact .contact-layout {
    grid-template-columns: 244px minmax(0, 1fr);
    gap: clamp(40px, 5vw, 84px);
  }

  .page-contact .contact-aside {
    position: sticky;
    top: calc(var(--header-solid-h) + 30px);
    gap: 34px;
  }

  .page-contact .contact-toc {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding: 0 0 0 14px;
    border-bottom: 0;
    border-left: 1px solid var(--line);
  }

  .page-contact .contact-toc .toc-link {
    white-space: normal;
    padding: 9px 12px;
  }

  .page-contact .contact-hero-facts {
    gap: 22px 84px;
  }
}

@media (min-width: 1200px) {
  .page-contact .contact-hero h1 {
    max-width: 17ch;
  }

  .page-contact .contact-card {
    --pc-cut: 22px;
  }
}
<<<END>>>
</main>