.page-contact {
  --pc-gap: clamp(16px, 2.4vw, 32px);
  padding-bottom: clamp(32px, 5vw, 64px);
  background-color: var(--paper);
  background-image:
    repeating-linear-gradient(115deg, rgba(94, 158, 127, 0.07) 0 1px, transparent 1px 88px),
    repeating-linear-gradient(65deg, rgba(200, 160, 60, 0.05) 0 1px, transparent 1px 104px);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  overflow-x: hidden;
}

.page-contact h1,
.page-contact h2,
.page-contact h3 {
  margin: 0;
  font-family: var(--font-display);
}

.page-contact .breadcrumbs {
  padding-block: 16px 0;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding-top: clamp(6px, 1.2vw, 16px);
}

.page-contact .contact-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pc-gap);
  padding-block: clamp(16px, 2.6vw, 30px) clamp(30px, 4.6vw, 54px);
}

.page-contact .contact-hero__eyebrow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin: 0 0 18px;
}

.page-contact .contact-hero h1 {
  font-size: clamp(34px, 6vw, 62px);
  line-height: 1.06;
  font-weight: 900;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.page-contact .contact-hero__lede {
  max-width: 36em;
  margin: 0 0 26px;
  color: var(--teal);
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.8;
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 26px;
}

.page-contact .contact-hero__facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 0;
  padding: 18px 0 0;
  list-style: none;
  border-top: 1px solid var(--edge);
}

.page-contact .contact-hero__facts li {
  display: grid;
  gap: 4px;
}

.page-contact .contact-hero__facts strong {
  font-size: clamp(15px, 1.5vw, 18px);
  font-weight: 900;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.page-contact .contact-hero__facts .meta-text {
  color: var(--graphite);
}

.page-contact .contact-hero__figure {
  margin: 0;
  box-shadow: 8px 8px 0 rgba(224, 214, 192, 0.9);
}

.page-contact .figure-frame img {
  max-width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.page-contact .figure-frame__caption {
  margin-top: 8px;
  color: var(--graphite);
}

/* ---------- 章节骨架 ---------- */
.page-contact .contact-section {
  padding-block: clamp(32px, 4.6vw, 60px);
  border-top: 1px solid var(--edge);
}

.page-contact .section-head {
  display: grid;
  gap: 10px;
  max-width: 62ch;
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-contact .section-head__title {
  display: flex;
  align-items: baseline;
  gap: 14px;
  font-size: clamp(23px, 3vw, 32px);
  font-weight: 900;
  line-height: 1.22;
  letter-spacing: -0.01em;
}

.page-contact .section-head__idx {
  flex: none;
  font-family: var(--font-mono);
  font-size: clamp(13px, 1.5vw, 16px);
  font-weight: 500;
  color: var(--gold);
  letter-spacing: 0.08em;
}

.page-contact .section-head__note {
  margin: 0;
  max-width: 50ch;
  color: var(--graphite);
  font-size: 15px;
  line-height: 1.75;
}

/* ---------- 三条通道 ---------- */
.page-contact .channels {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  align-items: stretch;
}

.page-contact .channel-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: clamp(20px, 2.4vw, 28px);
  background: var(--card);
  border: 1px solid var(--ink);
  border-radius: 2px;
  box-shadow: 6px 6px 0 rgba(224, 214, 192, 0.85);
  transition: transform 0.18s var(--ease), box-shadow 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-contact .channel-card:hover {
  transform: translateY(-4px);
  box-shadow: 6px 10px 0 rgba(200, 160, 60, 0.42);
}

.page-contact .channel-card--primary {
  border-color: var(--gold);
  background: linear-gradient(180deg, rgba(240, 204, 99, 0.16), rgba(255, 252, 244, 0.9) 46%);
  box-shadow: 6px 6px 0 rgba(200, 160, 60, 0.45);
}

.page-contact .channel-card--primary:hover {
  box-shadow: 6px 10px 0 rgba(240, 204, 99, 0.62);
}

.page-contact .channel-card h3 {
  font-size: 20px;
  font-weight: 900;
  line-height: 1.35;
}

.page-contact .channel-card__value {
  margin: 0;
  padding: 10px 12px;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.65;
  color: var(--ink);
  background: rgba(94, 158, 127, 0.13);
  border-left: 3px solid var(--cabbage);
  border-radius: 2px;
  word-break: break-all;
}

.page-contact .channel-card__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--teal);
}

.page-contact .channel-card__list li {
  position: relative;
  padding-left: 16px;
}

.page-contact .channel-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 6px;
  height: 6px;
  border-radius: 1px;
  background: var(--gold);
}

.page-contact .channel-card__foot {
  margin: auto 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--edge);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--graphite);
}

/* ---------- 技术反馈 ---------- */
.page-contact .feedback-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 36px);
}

.page-contact .feedback-figure {
  margin: 0;
}

.page-contact .sample {
  margin-top: 18px;
  padding: 18px 20px;
  background: var(--ink);
  color: var(--paper);
  border-left: 4px solid var(--gold);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.95;
}

.page-contact .sample__label {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-body);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gold-hi);
}

.page-contact .sample p {
  margin: 0;
  color: rgba(248, 242, 228, 0.88);
  word-break: break-word;
}

.page-contact .sample strong {
  font-weight: 500;
  color: var(--gold-hi);
}

.page-contact .checklist {
  counter-reset: fb;
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-contact .checklist__item {
  counter-increment: fb;
  background: var(--card);
  border: 1px solid var(--edge);
  border-radius: 2px;
  transition: border-color 0.18s var(--ease), background 0.18s var(--ease);
}

.page-contact .checklist__item:has(input:checked) {
  border-color: var(--gold);
  background: rgba(240, 204, 99, 0.16);
}

.page-contact .checklist__label {
  display: grid;
  grid-template-columns: 22px 26px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 14px 16px;
  cursor: pointer;
}

.page-contact .checklist__box {
  appearance: none;
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  margin: 3px 0 0;
  border: 1.5px solid var(--teal);
  border-radius: 2px;
  background: var(--paper);
  display: grid;
  place-content: center;
  cursor: pointer;
  transition: background 0.15s var(--ease), border-color 0.15s var(--ease);
}

.page-contact .checklist__box::after {
  content: "";
  width: 10px;
  height: 5px;
  margin-bottom: 2px;
  border-left: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  transform: rotate(-45deg) scale(0);
  transition: transform 0.15s var(--ease);
}

.page-contact .checklist__box:checked {
  background: var(--gold-hi);
  border-color: var(--gold);
}

.page-contact .checklist__box:checked::after {
  transform: rotate(-45deg) scale(1);
}

.page-contact .checklist__box:focus-visible {
  outline: 2px solid var(--stamp);
  outline-offset: 2px;
}

.page-contact .checklist__num {
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--gold);
}

.page-contact .checklist__num::before {
  content: counter(fb, decimal-leading-zero);
}

.page-contact .checklist__title {
  display: block;
  margin-bottom: 2px;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.45;
}

.page-contact .checklist__desc {
  display: block;
  font-size: 14px;
  line-height: 1.7;
  color: var(--graphite);
}

.page-contact .checklist__ready {
  display: none;
  align-items: center;
  gap: 10px;
  margin: 14px 0 0;
  padding: 12px 16px;
  font-size: 14.5px;
  font-weight: 700;
  color: var(--teal);
  background: rgba(240, 204, 99, 0.22);
  border: 1px dashed var(--gold);
  border-radius: 2px;
}

.page-contact .checklist__ready::before {
  content: "✓";
  flex: none;
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink);
  background: var(--gold-hi);
  border-radius: 2px;
}

.page-contact .checklist:has(.checklist__item:nth-child(1) input:checked):has(.checklist__item:nth-child(2) input:checked):has(.checklist__item:nth-child(3) input:checked):has(.checklist__item:nth-child(4) input:checked):has(.checklist__item:nth-child(5) input:checked) ~ .checklist__ready {
  display: flex;
}

/* ---------- 合作与建议 ---------- */
.page-contact .contact-tracks {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-contact .track {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px;
  background: var(--card);
  border: 1px solid var(--edge);
  border-top: 3px solid var(--cabbage);
  border-radius: 2px;
}

.page-contact .track h3 {
  font-size: 18px;
  font-weight: 900;
  line-height: 1.4;
}

.page-contact .track p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--graphite);
}

.page-contact .track__foot {
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px dashed var(--edge);
  color: var(--teal);
  letter-spacing: 0.06em;
}

.page-contact .contact-partner__note {
  margin: 20px 0 0;
  font-size: 14.5px;
  color: var(--graphite);
}

.page-contact .contact-partner__note a {
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid var(--gold);
  padding-bottom: 1px;
}

.page-contact .contact-partner__note a:hover {
  color: var(--ink);
  background: rgba(240, 204, 99, 0.35);
}

/* ---------- 自助入口 ---------- */
.page-contact .shortcuts {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-contact .shortcut {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 16px 18px;
  background: var(--card);
  border: 1px solid var(--edge);
  border-radius: 2px;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.18s var(--ease), transform 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.page-contact .shortcut:hover {
  border-color: var(--gold);
  transform: translateY(-4px);
  box-shadow: 0 8px 0 rgba(200, 160, 60, 0.28);
}

.page-contact .shortcut__ver {
  flex: none;
  align-self: start;
  padding: 4px 8px;
  font-size: 12px;
  color: var(--ink);
  background: rgba(200, 160, 60, 0.22);
  border: 1px solid var(--gold);
  border-radius: 2px;
  white-space: nowrap;
}

.page-contact .shortcut__body {
  display: grid;
  gap: 2px;
  min-width: 0;
}

.page-contact .shortcut__body strong {
  font-size: 16px;
  font-weight: 900;
  line-height: 1.4;
}

.page-contact .shortcut__body span {
  font-size: 14px;
  line-height: 1.7;
  color: var(--graphite);
}

.page-contact .shortcut__arrow {
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--gold);
  transition: transform 0.18s var(--ease);
}

.page-contact .shortcut:hover .shortcut__arrow {
  transform: translateX(4px);
}

/* ---------- 备案条 ---------- */
.page-contact .contact-legal {
  margin-top: clamp(26px, 4vw, 46px);
  padding-block: clamp(28px, 4vw, 46px);
  background-color: var(--ink);
  background-image: repeating-linear-gradient(115deg, rgba(200, 160, 60, 0.16) 0 1px, transparent 1px 64px);
  border-top: 1px solid var(--gold);
  border-bottom: 1px solid var(--gold);
  color: var(--paper);
}

.page-contact .contact-legal__inner {
  display: grid;
  gap: 18px;
}

.page-contact .contact-legal h2 {
  margin-bottom: 10px;
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 900;
  line-height: 1.35;
  color: var(--paper);
}

.page-contact .contact-legal__text p {
  margin: 0;
  max-width: 46em;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(248, 242, 228, 0.82);
}

.page-contact .contact-legal__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--gold-hi);
}

.page-contact .contact-legal__meta span {
  padding: 5px 10px;
  border: 1px solid rgba(200, 160, 60, 0.5);
  border-radius: 2px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 820px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: center;
  }

  .page-contact .channels {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
    align-items: end;
  }

  .page-contact .channel-card:nth-child(1) {
    min-height: 372px;
  }

  .page-contact .channel-card:nth-child(2) {
    min-height: 322px;
  }

  .page-contact .channel-card:nth-child(3) {
    min-height: 272px;
  }

  .page-contact .contact-tracks {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-contact .contact-legal__inner {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    align-items: center;
  }
}

@media (min-width: 960px) {
  .page-contact .feedback-grid {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    align-items: start;
  }

  .page-contact .feedback-aside {
    position: sticky;
    top: calc(var(--cmd-h) + 20px);
  }
}

@media (max-width: 560px) {
  .page-contact .contact-hero__facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px 10px;
  }

  .page-contact .checklist__label {
    grid-template-columns: 20px minmax(0, 1fr);
    gap: 8px 10px;
  }

  .page-contact .checklist__num {
    display: none;
  }

  .page-contact .shortcut {
    grid-template-columns: minmax(0, 1fr) auto;
    row-gap: 8px;
  }

  .page-contact .shortcut__ver {
    grid-column: 1 / -1;
    justify-self: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .shortcut,
  .page-contact .shortcut__arrow,
  .page-contact .checklist__item,
  .page-contact .checklist__box::after {
    transition: none;
  }

  .page-contact .channel-card:hover,
  .page-contact .shortcut:hover {
    transform: none;
  }

  .page-contact .shortcut:hover .shortcut__arrow {
    transform: none;
  }
}
<<<END>>>