.page-contact {
  --pc-hair: rgba(27, 36, 48, 0.16);
  --pc-hair-deep: rgba(217, 163, 74, 0.26);
}

/* ── 01 首屏 ── */
.page-contact .pc-hero {
  position: relative;
  padding-block: 22px 60px;
  overflow: hidden;
}

.page-contact .pc-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--yw-grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--yw-grid-line) 1px, transparent 1px);
  background-size: 88px 88px;
  pointer-events: none;
}

.page-contact .pc-hero .yw-shell {
  position: relative;
  z-index: 1;
}

.page-contact .pc-hero .yw-crumbs__link {
  color: var(--yw-slate);
}

.page-contact .pc-hero .yw-crumbs__here {
  color: var(--yw-light);
}

.page-contact .pc-hero__frame {
  position: relative;
  margin-top: 20px;
  display: grid;
  gap: 30px;
  padding: 26px 20px 30px;
  border: 1px solid var(--yw-rule);
  background: linear-gradient(180deg, rgba(5, 10, 18, 0.78), rgba(11, 20, 36, 0.55));
}

.page-contact .pc-hero__frame::before,
.page-contact .pc-hero__frame::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  border: 1px solid var(--yw-gold);
}

.page-contact .pc-hero__frame::before {
  top: -1px;
  left: -1px;
  border-right: 0;
  border-bottom: 0;
}

.page-contact .pc-hero__frame::after {
  bottom: -1px;
  right: -1px;
  border-left: 0;
  border-top: 0;
}

.page-contact .pc-hero__title {
  margin: 16px 0 0;
  font-family: var(--yw-head);
  font-weight: 900;
  font-size: clamp(30px, 7.4vw, 62px);
  line-height: 1.14;
  letter-spacing: -0.012em;
  color: var(--yw-light);
}

.page-contact .pc-hero__sub {
  margin: 18px 0 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--yw-slate);
}

.page-contact .pc-hero__hint {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--yw-slate);
}

.page-contact .pc-hero__hint a {
  color: var(--yw-gold);
  text-decoration: none;
  border-bottom: 1px solid var(--pc-hair-deep);
  transition: border-color 160ms var(--yw-ease), color 160ms var(--yw-ease);
}

.page-contact .pc-hero__hint a:hover {
  color: var(--yw-cyan);
  border-bottom-color: var(--yw-cyan);
}

.page-contact .pc-hero__window {
  position: relative;
  padding: 20px 18px 22px;
  border: 1px dashed var(--yw-rule);
  background: rgba(5, 10, 18, 0.6);
}

.page-contact .pc-hero__win-cap {
  display: block;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--yw-gold);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--yw-rule);
}

.page-contact .pc-hero__facts {
  margin: 0;
}

.page-contact .pc-hero__fact {
  display: grid;
  gap: 4px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(42, 58, 80, 0.6);
}

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

.page-contact .pc-hero__fact dt {
  font-family: var(--yw-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--yw-slate);
}

.page-contact .pc-hero__fact dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--yw-light);
  word-break: break-word;
}

.page-contact .pc-hero__fact dd.yw-mono {
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--yw-gold);
}

.page-contact .pc-hero__mail {
  font-size: 13px;
}

/* ── 02 反馈入口 ── */
.page-contact .pc-action {
  padding-block: 52px;
}

.page-contact .pc-action__board {
  display: grid;
  gap: 30px;
  padding: 26px 20px 30px;
  background: var(--yw-ink);
  border: 2px solid var(--yw-flame);
  position: relative;
}

.page-contact .pc-action__label {
  color: var(--yw-flame);
}

.page-contact .pc-action__label .yw-label__num {
  color: var(--yw-flame);
}

.page-contact .pc-action__title {
  margin: 14px 0 0;
  font-family: var(--yw-head);
  font-weight: 900;
  font-size: clamp(24px, 5.4vw, 38px);
  line-height: 1.24;
  color: var(--yw-light);
}

.page-contact .pc-action__lead {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--yw-slate);
}

.page-contact .pc-action__steps {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--yw-rule);
}

.page-contact .pc-step {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--yw-rule);
}

.page-contact .pc-step__num {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--yw-cyan);
}

.page-contact .pc-step__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--yw-light);
}

.page-contact .pc-step__text strong {
  color: var(--yw-gold);
  font-weight: 700;
}

.page-contact .pc-action__foot {
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--yw-slate);
}

.page-contact .pc-action__foot a {
  color: var(--yw-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(79, 227, 208, 0.4);
  transition: color 160ms var(--yw-ease);
}

.page-contact .pc-action__foot a:hover {
  color: var(--yw-gold);
}

.page-contact .pc-action__visual {
  margin: 0;
}

.page-contact .pc-action__visual .yw-media {
  border: 1px solid var(--yw-rule);
}

.page-contact .pc-action__cap {
  display: block;
  margin-top: 10px;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--yw-slate);
}

/* ── 03 直联通道 ── */
.page-contact .pc-channels {
  padding-block: 54px;
}

.page-contact .pc-channels__title {
  margin: 14px 0 0;
  font-family: var(--yw-head);
  font-weight: 900;
  font-size: clamp(24px, 5.2vw, 36px);
  line-height: 1.26;
  color: var(--yw-light);
}

.page-contact .pc-channels__lead {
  margin: 12px 0 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--yw-slate);
}

.page-contact .pc-channels__grid {
  display: grid;
  gap: 18px;
  margin-top: 30px;
}

.page-contact .pc-channel {
  position: relative;
  padding: 24px 20px 26px;
  background: rgba(5, 10, 18, 0.62);
  border: 1px solid var(--yw-rule);
  transition: border-color 180ms var(--yw-ease), transform 180ms var(--yw-ease);
}

.page-contact .pc-channel:hover {
  border-color: var(--yw-gold);
  transform: translate(-2px, -2px);
}

.page-contact .pc-channel--tel {
  border-top: 3px solid var(--yw-gold);
}

.page-contact .pc-channel--mail {
  border-top: 3px solid var(--yw-cyan);
}

.page-contact .pc-channel__tag {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--yw-slate);
}

.page-contact .pc-channel__name {
  margin: 10px 0 0;
  font-family: var(--yw-serif);
  font-weight: 600;
  font-size: 19px;
  color: var(--yw-light);
}

.page-contact .pc-channel__value {
  margin: 12px 0 0;
  font-size: clamp(19px, 5vw, 25px);
  line-height: 1.3;
  letter-spacing: 0.01em;
  color: var(--yw-gold);
  word-break: break-all;
}

.page-contact .pc-channel__value--mail {
  font-size: clamp(14px, 3.6vw, 18px);
}

.page-contact .pc-channel__use {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--yw-slate);
}

.page-contact .pc-channel__meta {
  margin: 16px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--yw-rule);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--yw-cyan);
}

/* ── 04 处理时效 ── */
.page-contact .pc-sla {
  padding-block: 54px;
}

.page-contact .pc-sla__title {
  margin: 14px 0 0;
  font-family: var(--yw-head);
  font-weight: 900;
  font-size: clamp(24px, 5.2vw, 36px);
  line-height: 1.26;
  color: var(--yw-paper-ink);
}

.page-contact .pc-sla__lead {
  margin: 12px 0 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(27, 36, 48, 0.72);
}

.page-contact .pc-sla__list {
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--yw-paper-2);
}

.page-contact .pc-sla__row {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  grid-template-areas:
    "idx type"
    "case case"
    "time time";
  gap: 6px 12px;
  padding: 16px 0;
  border-bottom: 1px solid var(--yw-paper-2);
  align-items: baseline;
  transition: background-color 160ms var(--yw-ease);
}

.page-contact .pc-sla__row:hover {
  background-color: rgba(226, 216, 200, 0.35);
}

.page-contact .pc-sla__idx {
  grid-area: idx;
  font-size: 13px;
  color: var(--yw-gold-dark);
}

.page-contact .pc-sla__type {
  grid-area: type;
  font-family: var(--yw-head);
  font-weight: 700;
  font-size: 16px;
  color: var(--yw-paper-ink);
}

.page-contact .pc-sla__case {
  grid-area: case;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(27, 36, 48, 0.78);
}

.page-contact .pc-sla__time {
  grid-area: time;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--yw-gold-dark);
}

.page-contact .pc-sla__note {
  margin: 22px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--yw-gold);
  font-size: 14px;
  line-height: 1.85;
  color: rgba(27, 36, 48, 0.7);
}

/* ── 05 纠错与合作 ── */
.page-contact .pc-correct {
  padding-block: 54px;
}

.page-contact .pc-correct__title {
  margin: 14px 0 0;
  font-family: var(--yw-head);
  font-weight: 900;
  font-size: clamp(24px, 5.2vw, 36px);
  line-height: 1.26;
  color: var(--yw-light);
}

.page-contact .pc-correct__lead {
  margin: 12px 0 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--yw-slate);
}

.page-contact .pc-correct__grid {
  display: grid;
  gap: 20px;
  margin-top: 30px;
}

.page-contact .pc-correct__col {
  padding: 22px 18px 24px;
  border: 1px solid var(--yw-rule);
  border-left: 3px solid var(--yw-cyan);
  background: rgba(5, 10, 18, 0.5);
}

.page-contact .pc-correct__col:last-child {
  border-left-color: var(--yw-gold);
}

.page-contact .pc-correct__h3 {
  margin: 0;
  font-family: var(--yw-serif);
  font-weight: 600;
  font-size: 18px;
  color: var(--yw-light);
}

.page-contact .pc-correct__body {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--yw-slate);
}

.page-contact .pc-correct__link {
  margin: 16px 0 0;
  font-family: var(--yw-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--yw-slate);
}

.page-contact .pc-correct__link a {
  color: var(--yw-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(79, 227, 208, 0.35);
  transition: color 160ms var(--yw-ease), border-color 160ms var(--yw-ease);
}

.page-contact .pc-correct__link a:hover {
  color: var(--yw-gold);
  border-bottom-color: var(--yw-gold);
}

/* ── 06 站点信息 ── */
.page-contact .pc-siteinfo {
  padding-block: 50px 60px;
}

.page-contact .pc-siteinfo__grid {
  display: grid;
  gap: 26px;
}

.page-contact .pc-siteinfo__visual {
  margin: 0;
}

.page-contact .pc-siteinfo__visual .yw-media {
  border: 1px solid var(--yw-paper-2);
}

.page-contact .pc-siteinfo__title {
  margin: 14px 0 0;
  font-family: var(--yw-head);
  font-weight: 900;
  font-size: clamp(21px, 4.6vw, 29px);
  line-height: 1.3;
  color: var(--yw-paper-ink);
}

.page-contact .pc-siteinfo__facts {
  margin: 20px 0 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--yw-paper-2);
}

.page-contact .pc-siteinfo__fact {
  display: grid;
  gap: 4px;
  padding: 12px 0;
  border-bottom: 1px solid var(--yw-paper-2);
}

.page-contact .pc-siteinfo__fact dt {
  font-family: var(--yw-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--yw-gold-dark);
}

.page-contact .pc-siteinfo__fact dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(27, 36, 48, 0.82);
}

.page-contact .pc-siteinfo__fold {
  margin-top: 20px;
}

.page-contact .pc-siteinfo__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--yw-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--yw-gold-dark);
  border-top: 1px solid var(--yw-paper-2);
  border-bottom: 1px solid var(--yw-paper-2);
  transition: color 160ms var(--yw-ease);
}

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

.page-contact .pc-siteinfo__summary:hover {
  color: var(--yw-paper-ink);
}

.page-contact .pc-siteinfo__summary:focus-visible {
  outline: 2px solid var(--yw-cyan);
  outline-offset: 2px;
}

.page-contact .pc-siteinfo__mark {
  width: 9px;
  height: 9px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg) translate(-2px, -2px);
  transition: transform 180ms var(--yw-ease);
}

.page-contact .pc-siteinfo__fold[open] .pc-siteinfo__mark {
  transform: rotate(-135deg) translate(-2px, -2px);
}

.page-contact .pc-siteinfo__panel {
  padding: 16px 0 4px;
}

.page-contact .pc-siteinfo__panel p {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.9;
  color: rgba(27, 36, 48, 0.78);
}

.page-contact .pc-siteinfo__panel p:last-child {
  margin-bottom: 0;
}

.page-contact .pc-siteinfo__panel a {
  color: var(--yw-gold-dark);
  text-decoration: none;
  border-bottom: 1px solid rgba(150, 112, 42, 0.45);
  transition: color 160ms var(--yw-ease), border-color 160ms var(--yw-ease);
}

.page-contact .pc-siteinfo__panel a:hover {
  color: var(--yw-paper-ink);
  border-bottom-color: var(--yw-paper-ink);
}

/* ── 断点 ── */
@media (min-width: 700px) {
  .page-contact .pc-action__board {
    padding: 36px 32px 40px;
  }

  .page-contact .pc-step {
    grid-template-columns: 104px minmax(0, 1fr);
    gap: 12px 18px;
    align-items: baseline;
  }

  .page-contact .pc-correct__grid,
  .page-contact .pc-channels__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
  }

  .page-contact .pc-sla__row {
    grid-template-columns: 44px 124px minmax(0, 1fr) auto;
    grid-template-areas: "idx type case time";
    gap: 20px;
    padding: 18px 8px;
  }
}

@media (min-width: 940px) {
  .page-contact .pc-hero {
    padding-block: 26px 78px;
  }

  .page-contact .pc-hero__frame {
    grid-template-columns: minmax(0, 1.58fr) minmax(0, 1fr);
    gap: 44px;
    padding: 42px 38px 46px;
  }

  .page-contact .pc-action {
    padding-block: 68px;
  }

  .page-contact .pc-action__board {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: 40px;
    padding: 44px 40px 48px;
    align-items: start;
  }

  .page-contact .pc-channels,
  .page-contact .pc-sla,
  .page-contact .pc-correct {
    padding-block: 70px;
  }

  .page-contact .pc-siteinfo {
    padding-block: 62px 76px;
  }

  .page-contact .pc-siteinfo__grid {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    gap: 46px;
    align-items: start;
  }
}
<<<END>>>