.page-contact {
  --pc-panel: rgba(15, 46, 42, 0.58);
  --pc-panel-deep: rgba(8, 19, 17, 0.78);
  --pc-hair: rgba(43, 58, 53, 0.9);
  background: var(--yy-night);
  color: var(--yy-text);
  font-family: var(--yy-font-sans);
  line-height: 1.75;
  overflow-x: hidden;
}

.page-contact a {
  color: var(--yy-cyan);
  text-decoration: none;
  transition: color 0.22s var(--yy-ease);
}

.page-contact a:hover,
.page-contact a:focus-visible {
  color: var(--yy-amber);
}

.page-contact .pc-eyebrow {
  margin: 0 0 10px;
  font-family: var(--yy-font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--yy-amber);
}

.page-contact .pc-eyebrow--moss { color: var(--yy-moss-lt); }
.page-contact .pc-eyebrow--clay { color: var(--yy-clay-lt); }
.page-contact .pc-eyebrow--cyan { color: var(--yy-cyan); }

.page-contact .pc-h1 {
  margin: 0 0 16px;
  font-family: var(--yy-font-sans);
  font-weight: 800;
  font-size: clamp(30px, 5.4vw, 54px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--yy-cream);
}

.page-contact .pc-h2 {
  margin: 0 0 12px;
  font-family: var(--yy-font-sans);
  font-weight: 800;
  font-size: clamp(24px, 3.8vw, 36px);
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--yy-cream);
}

.page-contact .pc-h3 {
  margin: 0 0 12px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--yy-cream);
}

.page-contact .pc-lead {
  margin: 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--yy-text);
}

.page-contact .pc-body {
  margin: 0;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--yy-text);
}

.page-contact .pc-aside {
  margin: 18px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--yy-clay);
  font-size: 13px;
  line-height: 1.8;
  color: var(--yy-text-dim);
}

/* 面包屑 */
.page-contact .yy-breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--yy-rock);
}

.page-contact .yy-breadcrumb li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.page-contact .yy-breadcrumb li + li::before {
  content: "/";
  color: var(--yy-line);
}

.page-contact .yy-breadcrumb a { color: var(--yy-rock); }
.page-contact .yy-breadcrumb a:hover { color: var(--yy-cyan); }
.page-contact .yy-breadcrumb [aria-current="page"] { color: var(--yy-cream); }

/* 首屏 */
.page-contact .pc-hero {
  position: relative;
  isolation: isolate;
  padding: 22px 0 clamp(36px, 6vw, 72px);
  border-bottom: 1px solid var(--yy-line);
}

.page-contact .pc-hero__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  overflow: hidden;
}

.page-contact .pc-hero__bg img {
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
  opacity: 0.34;
  filter: saturate(0.72) contrast(1.06);
}

.page-contact .pc-hero__bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(158deg, rgba(8, 19, 17, 0.95) 0%, rgba(8, 19, 17, 0.74) 46%, rgba(8, 19, 17, 0.97) 100%),
    radial-gradient(120% 90% at 84% 6%, rgba(53, 224, 209, 0.16), transparent 62%),
    radial-gradient(90% 70% at 4% 100%, rgba(165, 101, 74, 0.18), transparent 65%);
}

.page-contact .pc-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 44px);
  align-items: start;
}

.page-contact .pc-hero__lead { min-width: 0; }

/* 主题选择器 */
.page-contact .pc-switch {
  position: relative;
  margin-top: clamp(22px, 3.4vw, 34px);
  padding: clamp(16px, 2.4vw, 26px);
  border: 1px solid var(--pc-hair);
  border-top: 2px solid var(--yy-amber);
  background: var(--pc-panel);
  backdrop-filter: blur(2px);
}

.page-contact .pc-switch__title {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--yy-moss-lt);
}

.page-contact .pc-switch__options {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-contact .pc-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: 0;
  opacity: 0;
  pointer-events: none;
}

.page-contact .pc-opt {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border: 1px solid var(--pc-hair);
  background: rgba(8, 19, 17, 0.55);
  color: var(--yy-text-dim);
  font-size: 14px;
  line-height: 1.4;
  cursor: pointer;
  transition: border-color 0.24s var(--yy-ease), background 0.24s var(--yy-ease), color 0.24s var(--yy-ease);
}

.page-contact .pc-opt__k {
  font-family: var(--yy-font-mono);
  font-size: 12px;
  color: var(--yy-rock);
  transition: color 0.24s var(--yy-ease);
}

.page-contact .pc-opt:hover {
  border-color: var(--yy-moss-lt);
  color: var(--yy-cream);
}

.page-contact .pc-radio:checked + .pc-opt {
  border-color: var(--yy-amber);
  box-shadow: inset 3px 0 0 var(--yy-amber);
  background: rgba(242, 169, 59, 0.1);
  color: var(--yy-cream);
}

.page-contact .pc-radio:checked + .pc-opt .pc-opt__k { color: var(--yy-amber); }

.page-contact .pc-radio:focus-visible + .pc-opt {
  outline: 2px solid var(--yy-cyan);
  outline-offset: 2px;
}

.page-contact .pc-preview {
  grid-column: 1 / -1;
  margin-top: 4px;
  padding-top: 14px;
  border-top: 1px dashed var(--pc-hair);
}

.page-contact .pc-preview__item { display: none; }

.page-contact .pc-preview__item p {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--yy-text);
}

.page-contact .pc-preview__subj {
  display: block;
  padding: 9px 12px;
  border: 1px solid var(--pc-hair);
  background: var(--pc-panel-deep);
  font-family: var(--yy-font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--yy-cyan);
  word-break: break-word;
}

.page-contact #pc-topic-a:checked ~ .pc-preview .pc-preview__item--a,
.page-contact #pc-topic-b:checked ~ .pc-preview .pc-preview__item--b,
.page-contact #pc-topic-c:checked ~ .pc-preview .pc-preview__item--c {
  display: block;
}

/* 联系面板 */
.page-contact .pc-console {
  position: relative;
  padding: clamp(18px, 2.8vw, 30px);
  border: 1px solid var(--pc-hair);
  background: linear-gradient(180deg, rgba(15, 46, 42, 0.88) 0%, rgba(8, 19, 17, 0.92) 100%);
  box-shadow: var(--yy-shadow);
}

.page-contact .pc-console::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--yy-amber) 0%, var(--yy-clay) 56%, var(--yy-cyan) 100%);
}

.page-contact .pc-console__title {
  margin: 6px 0 8px;
  font-size: 20px;
  font-weight: 800;
  color: var(--yy-cream);
}

.page-contact .pc-console__note {
  margin: 0 0 6px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--yy-text-dim);
}

.page-contact .pc-list {
  margin: 0 0 18px;
  padding: 0;
}

.page-contact .pc-list__row {
  display: grid;
  gap: 3px;
  padding: 12px 0;
  border-bottom: 1px solid var(--pc-hair);
}

.page-contact .pc-list__row dt {
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--yy-rock);
}

.page-contact .pc-list__row dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--yy-cream);
  word-break: break-word;
}

.page-contact .pc-mail {
  font-family: var(--yy-font-mono);
  font-size: 13px;
  border-bottom: 1px solid rgba(53, 224, 209, 0.4);
}

.page-contact .pc-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  text-align: center;
}

/* 章节通用 */
.page-contact .pc-section {
  padding: clamp(38px, 5.6vw, 74px) 0;
  border-bottom: 1px solid var(--yy-line);
}

.page-contact .pc-section__head {
  max-width: 760px;
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-contact .pc-section--service {
  background:
    radial-gradient(80% 60% at 100% 0%, rgba(79, 107, 87, 0.18), transparent 62%),
    var(--yy-night);
}

.page-contact .pc-section--coop {
  background:
    radial-gradient(90% 70% at 0% 0%, rgba(165, 101, 74, 0.2), transparent 60%),
    linear-gradient(180deg, rgba(15, 46, 42, 0.55) 0%, rgba(8, 19, 17, 0) 100%),
    var(--yy-night);
}

.page-contact .pc-section--fix {
  background:
    radial-gradient(70% 60% at 92% 12%, rgba(53, 224, 209, 0.12), transparent 62%),
    var(--yy-night);
}

.page-contact .pc-section--legacy {
  background:
    linear-gradient(180deg, rgba(79, 107, 87, 0.16) 0%, rgba(8, 19, 17, 0) 70%),
    var(--yy-night);
}

.page-contact .pc-section--info {
  background: var(--yy-charcoal);
  border-bottom: none;
}

/* 细线表格 */
.page-contact .pc-tablewrap {
  overflow-x: auto;
  border: 1px solid var(--pc-hair);
  background: rgba(15, 46, 42, 0.42);
  -webkit-overflow-scrolling: touch;
}

.page-contact .pc-table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-contact .pc-table caption {
  padding: 12px 16px;
  border-bottom: 1px solid var(--pc-hair);
  text-align: left;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--yy-moss-lt);
}

.page-contact .pc-table th,
.page-contact .pc-table td {
  padding: 14px 16px;
  text-align: left;
  vertical-align: top;
  line-height: 1.7;
  border-bottom: 1px solid var(--pc-hair);
}

.page-contact .pc-table thead th {
  background: rgba(8, 19, 17, 0.7);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--yy-rock);
}

.page-contact .pc-table tbody th {
  font-weight: 600;
  color: var(--yy-cream);
}

.page-contact .pc-table tbody td { color: var(--yy-text); }

.page-contact .pc-table tbody td:last-child {
  font-family: var(--yy-font-mono);
  font-size: 13px;
  white-space: nowrap;
  color: var(--yy-cyan);
}

.page-contact .pc-table tbody tr:last-child th,
.page-contact .pc-table tbody tr:last-child td { border-bottom: none; }

.page-contact .pc-table tbody tr:hover { background: rgba(53, 224, 209, 0.06); }

/* 合作区 */
.page-contact .pc-coop {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

.page-contact .pc-listcheck {
  margin: 18px 0 22px;
  padding: 0;
  list-style: none;
}

.page-contact .pc-listcheck li {
  display: grid;
  gap: 4px;
  padding: 12px 0;
  border-bottom: 1px solid var(--pc-hair);
  font-size: 14px;
  line-height: 1.75;
  color: var(--yy-text);
}

.page-contact .pc-listcheck__k {
  font-family: var(--yy-font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--yy-clay-lt);
}

.page-contact .pc-btn--inline { width: auto; padding-inline: 20px; }

.page-contact .pc-coop__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--pc-hair);
  background: var(--pc-hair);
}

.page-contact .pc-stat {
  padding: 18px 16px;
  background: rgba(8, 19, 17, 0.82);
}

.page-contact .pc-stat__n {
  display: block;
  font-family: var(--yy-font-mono);
  font-size: clamp(26px, 4vw, 34px);
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
  color: var(--yy-amber);
}

.page-contact .pc-stat__l {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--yy-text-dim);
}

/* 纠错区 */
.page-contact .pc-fix {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

.page-contact .pc-steps {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: none;
}

.page-contact .pc-steps li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  padding: 14px 0;
  border-top: 1px solid var(--pc-hair);
}

.page-contact .pc-steps__k {
  font-family: var(--yy-font-mono);
  font-size: 13px;
  color: var(--yy-cyan);
  padding-top: 2px;
}

.page-contact .pc-steps__body strong {
  display: block;
  font-size: 15px;
  color: var(--yy-cream);
}

.page-contact .pc-steps__body p {
  margin: 4px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--yy-text-dim);
}

.page-contact .pc-figure {
  margin: 0;
  border: 1px solid var(--pc-hair);
  background: rgba(15, 46, 42, 0.42);
  padding: 10px;
}

.page-contact .pc-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--pc-hair);
}

.page-contact .pc-figure figcaption {
  padding: 10px 4px 2px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--yy-text-dim);
}

/* 旧版区 */
.page-contact .pc-legacy {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-contact .pc-panel {
  padding: clamp(18px, 2.6vw, 26px);
  border: 1px solid var(--pc-hair);
  border-left: 2px solid var(--yy-moss);
  background: var(--pc-panel);
}

.page-contact .pc-panel--clay {
  border-left-color: var(--yy-clay);
  background: rgba(165, 101, 74, 0.09);
}

.page-contact .pc-bullets {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .pc-bullets li {
  position: relative;
  padding-left: 16px;
  margin-bottom: 9px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--yy-text);
}

.page-contact .pc-bullets li:last-child { margin-bottom: 0; }

.page-contact .pc-bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border: 1px solid var(--yy-cyan);
}

/* 站点信息 */
.page-contact .pc-info {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.4vw, 40px);
  align-items: start;
}

.page-contact .pc-meta {
  margin: 18px 0 0;
  padding: 0;
}

.page-contact .pc-meta__row {
  display: grid;
  gap: 3px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(43, 58, 53, 0.9);
}

.page-contact .pc-meta__row dt {
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--yy-rock);
}

.page-contact .pc-meta__row dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--yy-cream);
  word-break: break-word;
}

.page-contact .pc-info__side {
  display: grid;
  gap: 1px;
  border: 1px solid rgba(43, 58, 53, 0.9);
  background: rgba(43, 58, 53, 0.9);
}

.page-contact .pc-linkrow {
  display: grid;
  gap: 4px;
  padding: 14px 16px;
  background: var(--yy-charcoal);
  border-left: 2px solid transparent;
  transition: border-color 0.24s var(--yy-ease), background 0.24s var(--yy-ease);
}

.page-contact .pc-linkrow:hover,
.page-contact .pc-linkrow:focus-visible {
  border-left-color: var(--yy-amber);
  background: #202423;
}

.page-contact .pc-linkrow__t {
  font-size: 15px;
  font-weight: 700;
  color: var(--yy-cream);
}

.page-contact .pc-linkrow__d {
  font-size: 12px;
  line-height: 1.7;
  color: var(--yy-text-dim);
}

.page-contact a:focus-visible {
  outline: 2px solid var(--yy-cyan);
  outline-offset: 2px;
}

/* 窄屏微调 */
@media (max-width: 420px) {
  .page-contact .pc-coop__stats { grid-template-columns: minmax(0, 1fr); }
  .page-contact .pc-stat { padding: 14px; }
}

/* 平板及以上 */
@media (min-width: 720px) {
  .page-contact .pc-switch__options { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .page-contact .pc-opt { align-items: flex-start; min-height: 68px; }
  .page-contact .pc-legacy { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
  .page-contact .pc-coop__stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* 桌面 */
@media (min-width: 960px) {
  .page-contact .pc-hero { padding-top: 28px; }
  .page-contact .pc-hero__inner { grid-template-columns: minmax(0, 1.42fr) minmax(0, 1fr); }
  .page-contact .pc-console { position: sticky; top: 96px; }
  .page-contact .pc-section__head { margin-bottom: 34px; }
  .page-contact .pc-coop { grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); }
  .page-contact .pc-fix { grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); }
  .page-contact .pc-info { grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); }
  .page-contact .pc-coop__stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .page-contact .pc-stat { padding: 22px 20px; }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact *,
  .page-contact *::before,
  .page-contact *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}
<<<END>>>