.page-contact {
  --contact-muted: #98A3B0;
  background: var(--ink-900);
  color: var(--paper-hi);
  padding-bottom: clamp(48px, 8vw, 96px);
}

/* ---------- 面包屑 ---------- */
.page-contact .contact-top {
  padding-top: clamp(20px, 3vw, 32px);
}

.page-contact .crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--graphite);
}

.page-contact .crumb li {
  display: inline-flex;
  align-items: center;
}

.page-contact .crumb li + li::before {
  content: "";
  width: 12px;
  height: 1px;
  margin-right: 8px;
  background: var(--line);
}

.page-contact .crumb a {
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

.page-contact .crumb a:hover,
.page-contact .crumb a:focus-visible {
  color: var(--flame);
  border-bottom-color: var(--flame);
}

.page-contact .crumb [aria-current="page"] {
  color: var(--flame);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding-top: clamp(28px, 5vw, 52px);
  padding-bottom: clamp(32px, 5vw, 56px);
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-hero__title {
  margin: 18px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 7.4vw, 60px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  max-width: 20ch;
}

.page-contact .contact-hero__title .hl {
  color: var(--flame);
}

.page-contact .contact-hero__lead {
  margin: 22px 0 0;
  max-width: 44ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--paper);
}

.page-contact .contact-hero__facts {
  margin: 30px 0 0;
  padding: 1px;
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .contact-hero__facts li {
  background: var(--ink-800);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.page-contact .contact-hero__facts li > span:first-child {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--cyan);
}

.page-contact .contact-hero__facts li > span:last-child {
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--contact-muted);
}

@media (min-width: 680px) {
  .page-contact .contact-hero__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 联络通道 ---------- */
.page-contact .contact-channels {
  padding-top: clamp(36px, 6vw, 64px);
}

.page-contact h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 4.4vw, 34px);
  line-height: 1.2;
  letter-spacing: -0.015em;
}

.page-contact .contact-channels__head {
  max-width: 60ch;
}

.page-contact .contact-channels__head p {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--contact-muted);
}

.page-contact .contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 32px);
  margin-top: clamp(26px, 4vw, 38px);
}

.page-contact .contact-grid__left {
  display: grid;
  gap: 16px;
  min-width: 0;
}

.page-contact .contact-grid__right {
  display: grid;
  gap: 20px;
  align-content: start;
  min-width: 0;
}

@media (min-width: 960px) {
  .page-contact .contact-grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: start;
  }
}

/* 联络卡片 */
.page-contact .channel {
  position: relative;
  padding: 20px 20px 22px;
  background: var(--ink-800);
  border-left: 3px solid var(--flame);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
  box-shadow: inset 0 0 0 1px var(--line);
  min-width: 0;
}

.page-contact .channel--addr {
  border-left-color: var(--cyan-deep);
}

.page-contact .channel__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--graphite);
}

.page-contact .channel__name {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--paper-hi);
}

.page-contact .channel__value {
  margin: 14px 0 0;
  font-size: clamp(15px, 3.6vw, 18px);
  line-height: 1.5;
  color: var(--paper-hi);
  overflow-wrap: anywhere;
}

.page-contact .channel__value.contact-mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  color: var(--flame);
}

.page-contact .channel__desc {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--contact-muted);
}

.page-contact .channel__meta {
  margin: 16px 0 0;
  padding: 14px 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 9px;
}

.page-contact .channel__meta li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  font-size: 13px;
  line-height: 1.6;
  color: var(--paper);
}

.page-contact .channel__meta li span {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--cyan);
  white-space: nowrap;
}

/* 配图 */
.page-contact .contact-figure {
  margin: 0;
  min-width: 0;
}

.page-contact .contact-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
}

.page-contact .contact-figure__cap {
  display: block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--graphite);
}

/* 准备清单 */
.page-contact .prep {
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-top: 2px solid var(--cyan);
  padding: 22px 20px 24px;
  min-width: 0;
}

.page-contact .prep h2 {
  font-size: clamp(20px, 4vw, 26px);
}

.page-contact .prep__lead {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--contact-muted);
}

.page-contact .prep__list {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: prep;
  display: grid;
  gap: 16px;
}

.page-contact .prep__list li {
  counter-increment: prep;
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 10px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper);
}

.page-contact .prep__list li::before {
  content: counter(prep, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan);
  padding-top: 3px;
}

.page-contact .prep__foot {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.75;
  color: var(--contact-muted);
}

.page-contact .prep__foot a,
.page-contact .flow-steps a,
.page-contact .contact-more a {
  color: var(--flame-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 138, 61, 0.45);
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

.page-contact .prep__foot a:hover,
.page-contact .flow-steps a:hover,
.page-contact .contact-more a:hover,
.page-contact .prep__foot a:focus-visible,
.page-contact .flow-steps a:focus-visible,
.page-contact .contact-more a:focus-visible {
  color: var(--flame);
  border-bottom-color: var(--flame);
}

/* ---------- 反馈入口 ---------- */
.page-contact .contact-flow {
  margin-top: clamp(44px, 7vw, 84px);
  padding: clamp(30px, 5vw, 56px) 0;
  background: var(--ink-800);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-flow__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

.page-contact .contact-flow__lead {
  margin: 16px 0 0;
  max-width: 42ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--contact-muted);
}

.page-contact .flow-steps {
  margin: 0;
  padding: 1px;
  list-style: none;
  counter-reset: flow;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .flow-steps li {
  counter-increment: flow;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  padding: 16px 18px;
  background: var(--ink-900);
  font-size: 14px;
  line-height: 1.72;
  color: var(--paper);
}

.page-contact .flow-steps li::before {
  content: counter(flow, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan);
  padding-top: 3px;
}

@media (min-width: 880px) {
  .page-contact .contact-flow__inner {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    gap: 44px;
    align-items: start;
  }
}

/* ---------- 合作接洽 ---------- */
.page-contact .contact-coop {
  --coop-ink: var(--ink-900);
  --coop-muted: #4C5563;
  --coop-line: rgba(10, 14, 20, 0.14);
  margin-top: clamp(44px, 7vw, 84px);
  background: var(--paper);
  color: var(--coop-ink);
  padding: clamp(36px, 6vw, 72px) 0;
}

.page-contact .contact-coop__head {
  max-width: 62ch;
}

.page-contact .contact-coop__head p {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--coop-muted);
}

.page-contact .coop-cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  margin-top: 32px;
}

.page-contact .coop-cards article {
  padding: 20px 20px 22px;
  background: var(--paper-hi);
  border: 1px solid var(--coop-line);
  box-shadow: 0 1px 0 rgba(10, 14, 20, 0.04);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
  min-width: 0;
}

.page-contact .coop-cards h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--ink-900);
}

.page-contact .coop-cards article p {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--coop-muted);
}

.page-contact .coop-note {
  margin-top: 26px;
  padding: 18px 20px;
  border-left: 3px solid var(--flame);
  background: rgba(255, 77, 0, 0.07);
}

.page-contact .coop-note p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--coop-muted);
}

.page-contact .contact-coop__figure {
  margin: 28px 0 0;
}

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

.page-contact .contact-more {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--coop-muted);
}

.page-contact .contact-more a {
  color: #C43A00;
  border-bottom-color: rgba(196, 58, 0, 0.4);
}

.page-contact .contact-more a:hover,
.page-contact .contact-more a:focus-visible {
  color: var(--flame);
  border-bottom-color: var(--flame);
}

@media (min-width: 900px) {
  .page-contact .coop-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }
}

/* ---------- 备案与站点信息 ---------- */
.page-contact .contact-legal {
  padding-top: clamp(40px, 6vw, 72px);
}

.page-contact .contact-legal__lead {
  margin: 14px 0 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--contact-muted);
}

.page-contact .contact-legal__list {
  margin: 26px 0 0;
  padding: 1px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .contact-legal__list > div {
  background: var(--ink-800);
  padding: 15px 18px;
  min-width: 0;
}

.page-contact .contact-legal__list dt {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--graphite);
}

.page-contact .contact-legal__list dd {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--paper-hi);
  overflow-wrap: anywhere;
}

.page-contact .contact-legal__note {
  margin: 20px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--graphite);
}

@media (min-width: 720px) {
  .page-contact .contact-legal__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1080px) {
  .page-contact .contact-legal__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-contact .crumb a,
  .page-contact .prep__foot a,
  .page-contact .flow-steps a,
  .page-contact .contact-more a {
    transition: none;
  }
}
<<<END>>>