.page-contact {
  --pc-frame-pad: clamp(18px, 4vw, 44px);
  --pc-hair: rgba(42, 58, 85, 0.55);
  background: var(--ink-900);
  color: var(--text);
}

.page-contact h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-style: italic;
  font-size: clamp(24px, 4vw, 38px);
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 10px 0 0;
}

.page-contact .prose {
  margin-top: 14px;
  color: var(--text-2);
  font-size: clamp(14.5px, 1.5vw, 16.5px);
  line-height: 1.8;
}

/* 面包屑 */
.page-contact .pc-crumb {
  padding-top: clamp(14px, 3vw, 24px);
}

/* 首屏框景 */
.page-contact .pc-hero {
  padding: clamp(12px, 2.5vw, 22px) 0 clamp(36px, 6vw, 76px);
}

.page-contact .pc-frame {
  position: relative;
  border: 1px solid var(--line);
  background: var(--ink-900);
  overflow: hidden;
  box-shadow: 0 0 0 1px rgba(7, 11, 20, 0.9), 0 24px 60px -40px rgba(34, 211, 238, 0.35);
}

.page-contact .pc-frame::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 9px;
  background-image: repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 18px);
  opacity: 0.85;
  pointer-events: none;
  z-index: 3;
}

.page-contact .pc-frame::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 84px;
  height: 4px;
  background: var(--orange);
  z-index: 3;
  pointer-events: none;
}

.page-contact .pc-frame__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.4;
  z-index: 0;
}

.page-contact .pc-frame__inner {
  position: relative;
  z-index: 1;
  padding: calc(var(--pc-frame-pad) + 9px) var(--pc-frame-pad) var(--pc-frame-pad);
  background: linear-gradient(180deg, rgba(7, 11, 20, 0.58) 0%, rgba(7, 11, 20, 0.9) 52%, rgba(7, 11, 20, 0.97) 100%);
}

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

.page-contact .pc-frame__head h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-style: italic;
  font-size: clamp(27px, 5.6vw, 54px);
  line-height: 1.08;
  letter-spacing: -0.015em;
  margin: 10px 0 0;
}

.page-contact .pc-lede {
  margin: 14px 0 0;
  color: var(--text-2);
  font-size: clamp(14.5px, 1.6vw, 17px);
  line-height: 1.8;
  max-width: 56ch;
}

/* 通讯面板 */
.page-contact .pc-console {
  margin-top: clamp(22px, 4vw, 40px);
  display: grid;
  grid-template-columns: 1fr;
  border: 1px solid var(--line);
  background: var(--ink-700);
}

.page-contact .pc-channels {
  display: grid;
}

.page-contact .pc-channel {
  padding: 16px 16px 18px;
  display: grid;
  gap: 7px;
  border-bottom: 1px solid var(--line-soft);
  transition: background var(--dur) var(--ease);
}

.page-contact .pc-channel:last-child {
  border-bottom: 0;
}

.page-contact .pc-channel:hover,
.page-contact .pc-channel:focus-within {
  background: rgba(34, 211, 238, 0.045);
}

.page-contact .pc-channel__head {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.page-contact .pc-channel__label {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--text);
}

.page-contact .pc-channel__value {
  font-family: var(--font-mono);
  font-size: clamp(14px, 1.7vw, 17px);
  line-height: 1.4;
  color: var(--cyan);
  text-decoration: none;
  word-break: break-all;
  width: fit-content;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-contact a.pc-channel__value:hover,
.page-contact a.pc-channel__value:focus-visible {
  border-bottom-color: var(--cyan);
}

.page-contact .pc-channel__value--plain {
  color: var(--text);
  font-size: clamp(15px, 1.9vw, 18px);
  margin: 0;
  user-select: all;
}

.page-contact .pc-channel__note {
  margin: 0;
  color: var(--text-2);
  font-size: 13.5px;
  line-height: 1.7;
}

.page-contact .pc-channel__actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 2px;
}

/* 值守状态 */
.page-contact .pc-status {
  padding: 18px 16px 20px;
  background: var(--ink-800);
  border-top: 1px solid var(--line);
}

.page-contact .pc-status__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--text-3);
}

.page-contact .pc-status__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .pc-status__list li {
  display: flex;
  align-items: center;
  gap: 9px;
  flex-wrap: wrap;
  font-size: 13.5px;
  color: var(--text-2);
  line-height: 1.5;
}

.page-contact .pc-band {
  display: block;
  width: 100%;
  height: auto;
  margin-top: 18px;
}

.page-contact .pc-status__hint {
  margin: 10px 0 0;
  font-size: 12px;
  line-height: 1.6;
  color: var(--text-3);
}

/* 章节头 */
.page-contact .pc-sec-head {
  max-width: 58ch;
}

/* 值守节奏 */
.page-contact .pc-timing {
  margin-top: clamp(20px, 4vw, 36px);
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line);
}

.page-contact .pc-timing__item {
  background: var(--ink-700);
  padding: clamp(16px, 2.6vw, 26px);
  border-left: 2px solid transparent;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-contact .pc-timing__item:hover {
  border-left-color: var(--orange);
  background: var(--ink-700);
}

.page-contact .pc-timing__hours {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(19px, 2.8vw, 25px);
  letter-spacing: -0.01em;
  color: var(--orange);
}

.page-contact .pc-timing__item h3 {
  margin: 8px 0 8px;
  font-size: 16px;
  font-weight: 800;
  color: var(--text);
}

.page-contact .pc-timing__item p:last-child {
  margin: 0;
  color: var(--text-2);
  font-size: 14px;
  line-height: 1.75;
}

/* 合作与媒体 */
.page-contact .pc-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 4vw, 48px);
}

.page-contact .pc-figure {
  margin: clamp(20px, 3vw, 28px) 0 0;
}

.page-contact .pc-figure .media-frame__caption {
  margin-top: 10px;
  font-size: 12.5px;
  color: var(--text-3);
  line-height: 1.6;
}

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

.page-contact .pc-legend__item {
  padding: clamp(16px, 2.4vw, 24px) 0 clamp(16px, 2.4vw, 24px) 16px;
  border-bottom: 1px solid var(--line);
  border-left: 2px solid var(--line);
  display: grid;
  gap: 9px;
  transition: border-left-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-contact .pc-legend__item--brand {
  border-left-color: var(--orange);
}

.page-contact .pc-legend__item--media {
  border-left-color: var(--violet);
}

.page-contact .pc-legend__item--tech {
  border-left-color: var(--cyan);
}

.page-contact .pc-legend__item:hover {
  background: rgba(17, 28, 48, 0.75);
}

.page-contact .pc-legend__title {
  margin: 0;
  font-size: clamp(17px, 2vw, 20px);
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.page-contact .pc-legend__meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--text-3);
  letter-spacing: 0.01em;
  word-break: break-all;
}

.page-contact .pc-legend__body {
  margin: 0;
  color: var(--text-2);
  font-size: 14px;
  line-height: 1.75;
}

/* 折叠 */
.page-contact .pc-fold {
  border: 1px solid var(--line-soft);
  background: var(--ink-700);
  margin-top: 2px;
}

.page-contact .pc-fold summary {
  list-style: none;
  cursor: pointer;
  padding: 10px 12px;
  font-size: 13px;
  color: var(--text-2);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  transition: color var(--dur) var(--ease);
}

.page-contact .pc-fold summary::-webkit-details-marker {
  display: none;
}

.page-contact .pc-fold summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--orange);
}

.page-contact .pc-fold[open] summary::after {
  content: "−";
}

.page-contact .pc-fold summary:hover,
.page-contact .pc-fold summary:focus-visible {
  color: var(--text);
}

.page-contact .pc-fold__list {
  margin: 0;
  padding: 0 14px 14px 28px;
  color: var(--text-2);
  font-size: 13.5px;
  line-height: 1.75;
}

.page-contact .pc-fold__list li + li {
  margin-top: 4px;
}

/* 排查步骤 */
.page-contact .pc-steps-wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 4vw, 48px);
}

.page-contact .pc-steps-head {
  max-width: 52ch;
}

.page-contact .pc-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: pcstep;
  display: grid;
  gap: clamp(16px, 2.4vw, 22px);
}

.page-contact .pc-steps li {
  counter-increment: pcstep;
  position: relative;
  padding-left: 48px;
  padding-bottom: 4px;
}

.page-contact .pc-steps li::before {
  content: "0" counter(pcstep);
  position: absolute;
  left: 0;
  top: -3px;
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--orange);
  letter-spacing: -0.02em;
}

.page-contact .pc-steps h3 {
  margin: 0 0 6px;
  font-size: 15.5px;
  font-weight: 800;
  color: var(--text);
}

.page-contact .pc-steps p {
  margin: 0;
  color: var(--text-2);
  font-size: 14px;
  line-height: 1.75;
}

.page-contact .pc-steps__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(22px, 4vw, 34px);
}

/* 站点信息 */
.page-contact .pc-meta {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 3vw, 34px);
  border-top: 1px solid var(--line);
  padding-top: clamp(18px, 3vw, 28px);
}

.page-contact .pc-meta__col {
  max-width: 34ch;
}

.page-contact .pc-meta__list {
  margin: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px 24px;
}

.page-contact .pc-meta__row {
  border-bottom: 1px dashed var(--line-soft);
  padding-bottom: 10px;
}

.page-contact .pc-meta__row dt {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--text-3);
}

.page-contact .pc-meta__row dd {
  margin: 5px 0 0;
  font-family: var(--font-mono);
  font-size: 14.5px;
  color: var(--text);
  word-break: break-all;
}

.page-contact .pc-meta__note {
  margin: 18px 0 0;
  color: var(--text-3);
  font-size: 13px;
  line-height: 1.75;
  max-width: 72ch;
}

.page-contact .pc-meta__note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease);
}

.page-contact .pc-meta__note a:hover,
.page-contact .pc-meta__note a:focus-visible {
  border-bottom-color: var(--cyan);
}

/* 桌面与平板 */
@media (min-width: 720px) {
  .page-contact .pc-console {
    grid-template-columns: 1.55fr 1fr;
  }

  .page-contact .pc-status {
    border-top: 0;
    border-left: 1px solid var(--line);
    padding: 20px;
  }

  .page-contact .pc-channel {
    padding: 18px 20px 20px;
  }

  .page-contact .pc-timing {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-contact .pc-meta__list {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 940px) {
  .page-contact .pc-split {
    grid-template-columns: 0.82fr 1.18fr;
    align-items: start;
  }

  .page-contact .pc-steps-wrap {
    grid-template-columns: 0.9fr 1.1fr;
    align-items: start;
  }

  .page-contact .pc-meta {
    grid-template-columns: 0.75fr 1.25fr;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .pc-channel,
  .page-contact .pc-channel__value,
  .page-contact .pc-timing__item,
  .page-contact .pc-legend__item,
  .page-contact .pc-fold summary,
  .page-contact .pc-meta__note a {
    transition: none;
  }
}
<<<END>>>