.page-contact {
  --pc-line: rgba(124, 138, 145, .22);
  --pc-grid: rgba(124, 138, 145, .12);
  --pc-paper-dim: rgba(242, 237, 227, .78);
  position: relative;
  overflow-x: clip;
}

/* 首屏 */
.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  padding-top: clamp(20px, 3.4vw, 40px);
  padding-bottom: clamp(48px, 6.5vw, 92px);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(var(--pc-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--pc-grid) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(120% 88% at 18% 0%, #000 18%, transparent 76%);
  mask-image: radial-gradient(120% 88% at 18% 0%, #000 18%, transparent 76%);
  pointer-events: none;
}

.page-contact .hero-grid {
  display: grid;
  gap: clamp(28px, 4vw, 44px);
  align-items: end;
}

.page-contact .hero-copy h1 {
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(32px, 6.4vw, 68px);
  line-height: 1.1;
  letter-spacing: -.02em;
  color: var(--paper);
  margin: 10px 0 0;
  max-width: 17ch;
}

.page-contact .hero-lede {
  margin: 18px 0 0;
  max-width: 46ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.8;
  color: var(--pc-paper-dim);
}

.page-contact .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-contact .hero-facts {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 20px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  line-height: 1.6;
  color: var(--rock);
}

.page-contact .hero-figure .figure-media {
  border-radius: var(--r-lg);
  border: 1px solid var(--pc-line);
  overflow: hidden;
}

.page-contact .hero-figure figcaption {
  margin-top: 12px;
}

/* 通道分流 */
.page-contact .desk-grid {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  margin-top: clamp(28px, 4vw, 44px);
}

.page-contact .channel-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--pc-line);
}

.page-contact .channel {
  position: relative;
  padding: 24px 0 24px 24px;
  border-left: 1px solid var(--pc-line);
  border-bottom: 1px solid var(--pc-line);
}

.page-contact .channel::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 26px;
  width: 3px;
  height: 28px;
  border-radius: 2px;
  background: var(--gold);
}

.page-contact .channel--jade::before { background: var(--jade); }
.page-contact .channel--cinnabar::before { background: var(--cinnabar); }

.page-contact .channel-no {
  display: block;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--gold);
  margin-bottom: 8px;
}

.page-contact .channel--jade .channel-no { color: var(--jade); }
.page-contact .channel--cinnabar .channel-no { color: var(--cinnabar); }

.page-contact .channel h3 {
  margin: 0 0 10px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(20px, 2.2vw, 24px);
  line-height: 1.3;
  color: var(--paper);
}

.page-contact .channel p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--pc-paper-dim);
  max-width: 54ch;
}

.page-contact .channel-tip {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .02em;
  color: var(--rock);
}

/* 联系信息卡 */
.page-contact .contact-card {
  border-radius: var(--r-lg);
  border: 1px solid var(--pc-line);
  background:
    radial-gradient(120% 80% at 100% 0%, rgba(212, 175, 55, .12), transparent 60%),
    linear-gradient(165deg, var(--ink-700), var(--ink-800) 72%);
  padding: clamp(20px, 3vw, 28px);
  box-shadow: var(--shadow-soft);
}

.page-contact .cc-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--pc-line);
}

.page-contact .cc-title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 20px;
  color: var(--paper);
}

.page-contact .contact-card .contact-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 4px 12px;
  align-items: center;
  padding: 16px 0 6px;
}

.page-contact .contact-card .contact-label {
  grid-column: 1 / -1;
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--rock);
}

.page-contact .contact-card .contact-value {
  font-family: var(--font-mono);
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--paper);
  word-break: break-word;
  font-variant-numeric: tabular-nums;
}

.page-contact .contact-card .contact-value--sm {
  font-size: 13.5px;
  color: var(--pc-paper-dim);
  font-family: var(--font-mono);
}

.page-contact .copy-btn {
  appearance: none;
  border: 1px solid var(--line-strong);
  background: rgba(6, 16, 26, .5);
  color: var(--paper);
  font-family: var(--font-sans);
  font-size: 12px;
  letter-spacing: .06em;
  padding: 7px 14px;
  border-radius: var(--r-pill);
  cursor: pointer;
  transition: border-color .2s var(--ease), color .2s var(--ease), background .2s var(--ease);
}

.page-contact .copy-btn:hover {
  border-color: var(--gold);
  color: var(--gold);
}

.page-contact .copy-btn:focus-visible {
  outline: 2px solid var(--jade);
  outline-offset: 2px;
}

.page-contact .copy-status {
  grid-column: 1 / -1;
  min-height: 16px;
  font-size: 12px;
  color: var(--jade);
}

.page-contact .cc-note {
  margin: 6px 0 14px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--rock);
}

/* 提交问题清单 */
.page-contact .submit-grid {
  display: grid;
  gap: clamp(30px, 4vw, 56px);
  align-items: start;
}

.page-contact .checklist {
  list-style: none;
  margin: clamp(24px, 3vw, 34px) 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-contact .check-item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-top: 1px solid var(--pc-line);
}

.page-contact .check-item:last-child {
  border-bottom: 1px solid var(--pc-line);
}

.page-contact .check-no {
  font-size: 20px;
  line-height: 1.2;
  color: var(--gold);
  opacity: .85;
}

.page-contact .check-body h3 {
  margin: 0 0 6px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 16px;
  letter-spacing: .02em;
  color: var(--paper);
}

.page-contact .check-body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--pc-paper-dim);
}

.page-contact .checklist-figure .figure-media {
  border-radius: var(--r-lg);
  border: 1px solid var(--pc-line);
  overflow: hidden;
}

.page-contact .checklist-figure figcaption {
  margin-top: 12px;
  color: var(--rock);
}

/* 合作与纠错 */
.page-contact .coop-grid {
  display: grid;
  gap: 16px;
  margin-top: clamp(26px, 3.5vw, 40px);
}

.page-contact .coop-card {
  position: relative;
  padding: clamp(22px, 3vw, 30px);
  border-radius: var(--r-lg);
  background: linear-gradient(170deg, rgba(19, 44, 66, .92), rgba(11, 27, 43, .92));
  border: 1px solid var(--pc-line);
  border-top: 3px solid var(--gold);
}

.page-contact .coop-card:nth-child(2) { border-top-color: var(--jade); }
.page-contact .coop-card:nth-child(3) { border-top-color: var(--cinnabar); }

.page-contact .coop-card h3 {
  margin: 14px 0 10px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(19px, 2vw, 22px);
  line-height: 1.35;
  color: var(--paper);
}

.page-contact .coop-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--pc-paper-dim);
}

.page-contact .coop-link {
  display: inline-block;
  margin-top: 16px;
  font-size: 13.5px;
  letter-spacing: .04em;
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(212, 175, 55, .38);
  padding-bottom: 2px;
}

.page-contact .coop-link:hover,
.page-contact .coop-link:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

/* 咨询表 */
.page-contact .consult-section {
  padding-top: 0;
}

.page-contact .consult-panel {
  border-radius: var(--r-lg);
  border: 1px solid var(--pc-line);
  background:
    radial-gradient(90% 70% at 0% 0%, rgba(95, 167, 156, .1), transparent 62%),
    var(--ink-800);
  padding: clamp(22px, 3.6vw, 44px);
}

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

.page-contact .consult-form {
  display: grid;
  gap: 18px;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-contact .field {
  display: grid;
  gap: 8px;
  min-width: 0;
}

.page-contact .field--wide {
  grid-column: 1 / -1;
}

.page-contact .field-label {
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--rock);
}

.page-contact .field-label .req {
  color: var(--cinnabar);
  margin-left: 4px;
}

.page-contact .field input,
.page-contact .field textarea {
  width: 100%;
  box-sizing: border-box;
  background: rgba(6, 16, 26, .72);
  border: 1px solid var(--line-strong);
  border-radius: var(--r-sm);
  color: var(--paper);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  padding: 12px 14px;
  transition: border-color .2s var(--ease);
}

.page-contact .field textarea {
  resize: vertical;
  min-height: 120px;
}

.page-contact .field input::placeholder,
.page-contact .field textarea::placeholder {
  color: rgba(124, 138, 145, .85);
}

.page-contact .field input:focus,
.page-contact .field textarea:focus {
  outline: none;
  border-color: var(--gold);
}

.page-contact .field input:required:not(:placeholder-shown):invalid,
.page-contact .field textarea:required:not(:placeholder-shown):invalid {
  border-color: var(--cinnabar);
}

.page-contact .field-hint {
  font-size: 12px;
  line-height: 1.6;
  color: var(--rock);
}

.page-contact .field input:required:not(:placeholder-shown):invalid + .field-hint,
.page-contact .field textarea:required:not(:placeholder-shown):invalid + .field-hint {
  color: var(--cinnabar);
}

.page-contact .qtype {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-contact .qtype-opt {
  position: relative;
  display: inline-flex;
}

.page-contact .qtype-opt input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-contact .qtype-opt span {
  display: inline-block;
  padding: 9px 18px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line-strong);
  font-size: 14px;
  color: rgba(242, 237, 227, .82);
  cursor: pointer;
  transition: border-color .2s var(--ease), color .2s var(--ease), background .2s var(--ease);
}

.page-contact .qtype-opt input:checked + span {
  background: rgba(212, 175, 55, .16);
  border-color: var(--gold);
  color: var(--gold);
}

.page-contact .qtype-opt input:focus-visible + span {
  outline: 2px solid var(--jade);
  outline-offset: 2px;
}

.page-contact .qtype-tip {
  display: none;
  margin: 4px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--jade);
}

.page-contact .qtype-tip[data-tip="rules"] {
  display: block;
}

.page-contact .qtype:has(input:checked) ~ .qtype-tip {
  display: none;
}

.page-contact .qtype:has(#qt-rules:checked) ~ .qtype-tip[data-tip="rules"],
.page-contact .qtype:has(#qt-ios:checked) ~ .qtype-tip[data-tip="ios"],
.page-contact .qtype:has(#qt-coop:checked) ~ .qtype-tip[data-tip="coop"] {
  display: block;
}

.page-contact .consult-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  padding-top: 6px;
  border-top: 1px solid var(--pc-line);
  margin-top: 4px;
  padding-top: 22px;
}

.page-contact .consult-actions .copy-status {
  flex-basis: 100%;
  min-height: 16px;
  font-size: 12px;
  color: var(--jade);
}

/* 底部入口带 */
.page-contact .band-inner {
  display: grid;
  gap: clamp(22px, 3vw, 40px);
  padding: clamp(24px, 3.6vw, 40px);
  border-radius: var(--r-lg);
  border: 1px solid var(--pc-line);
  background:
    linear-gradient(120deg, rgba(6, 16, 26, .95), rgba(11, 27, 43, .95)),
    var(--ink-900);
}

.page-contact .band-copy h2 {
  margin: 10px 0 12px;
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-contact .band-copy p {
  margin: 0;
  max-width: 56ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--pc-paper-dim);
}

.page-contact .band-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--pc-line);
}

.page-contact .band-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 2px;
  border-bottom: 1px solid var(--pc-line);
  font-size: 15px;
  color: var(--paper);
  text-decoration: none;
  transition: color .2s var(--ease), padding-left .2s var(--ease);
}

.page-contact .band-links a span {
  color: var(--gold);
  font-family: var(--font-mono);
}

.page-contact .band-links a:hover,
.page-contact .band-links a:focus-visible {
  color: var(--gold);
  padding-left: 8px;
}

/* 断点 */
@media (min-width: 720px) {
  .page-contact .consult-form {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 20px 22px;
  }

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

@media (min-width: 900px) {
  .page-contact .hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4.6fr);
    gap: clamp(32px, 4vw, 60px);
  }

  .page-contact .desk-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4.4fr);
  }

  .page-contact .submit-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4.2fr);
  }

  .page-contact .checklist-figure {
    position: sticky;
    top: 96px;
  }

  .page-contact .band-inner {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: center;
    gap: clamp(28px, 4vw, 64px);
  }

  .page-contact .band-links {
    border-top: 0;
  }

  .page-contact .band-links li:first-child a {
    border-top: 1px solid var(--pc-line);
  }
}

@media (min-width: 1100px) {
  .page-contact .hero-copy h1 {
    max-width: 15ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .copy-btn,
  .page-contact .qtype-opt span,
  .page-contact .band-links a,
  .page-contact .field input,
  .page-contact .field textarea {
    transition: none;
  }
}
<<<END>>>