.page-contact {
  display: block;
  background: var(--bg-abyss);
  color: var(--text-rice);
}

/* ---------- 首屏框景 ---------- */
.page-contact .co-hero {
  position: relative;
  overflow: hidden;
  background: var(--bg-abyss);
  border-bottom: 1px solid var(--line-moss);
}

.page-contact .co-hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-contact .co-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.32;
  filter: saturate(0.5) contrast(1.2) brightness(0.65) hue-rotate(-10deg);
}

.page-contact .co-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(
    180deg,
    rgba(6, 17, 15, 0.5) 0%,
    rgba(6, 17, 15, 0.8) 52%,
    var(--bg-abyss) 100%
  );
}

.page-contact .co-hero > .corner-tick {
  z-index: 3;
}

.page-contact .co-hero__inner {
  position: relative;
  z-index: 2;
  padding-block: var(--s5) var(--s4);
}

.page-contact .co-hero h1 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(30px, 7vw, 56px);
  line-height: 1.12;
  letter-spacing: 0.01em;
  color: var(--text-rice);
  margin: var(--s2) 0 var(--s3);
  max-width: 15em;
}

.page-contact .co-hero .lede {
  max-width: 46ch;
  margin: 0;
  font-family: var(--font-sans);
  font-size: clamp(15px, 3.6vw, 17px);
  line-height: 1.78;
  color: var(--text-rock);
}

.page-contact .co-hero__facts {
  list-style: none;
  margin: var(--s5) 0 0;
  padding: var(--s3) 0 0;
  border-top: 1px solid var(--line-moss);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s3);
}

.page-contact .co-hero__facts .num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(22px, 6.5vw, 30px);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--teal-signal);
}

.page-contact .co-hero__fact {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--text-rock);
}

/* ---------- 主体双栏 ---------- */
.page-contact .co-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s5);
  padding-block: var(--s5);
  align-items: start;
}

.page-contact .co-body__col {
  min-width: 0;
}

.page-contact .co-h2 {
  position: relative;
  margin: 0 0 var(--s3);
  padding-bottom: var(--s2);
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(22px, 5vw, 32px);
  line-height: 1.2;
  color: var(--text-rice);
}

.page-contact .co-h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 56px;
  height: 2px;
  background: var(--teal-signal);
}

.page-contact .co-h3 {
  margin: 0 0 var(--s2);
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 19px;
  line-height: 1.3;
  color: var(--text-rice);
}

.page-contact .co-lede {
  margin: 0 0 var(--s3);
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-rock);
  max-width: 44ch;
}

/* ---------- 选项卡 ---------- */
.page-contact .co-tabs {
  position: relative;
}

.page-contact .co-tabs__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.page-contact .co-tabs__labels {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--s1);
  margin-bottom: var(--s3);
}

.page-contact .co-tab {
  display: block;
  cursor: pointer;
  padding: var(--s2) var(--s2) var(--s3);
  background: var(--panel-locker);
  border: 1px solid var(--line-moss);
  border-left: 3px solid var(--line-moss);
  clip-path: polygon(
    0 0,
    calc(100% - var(--cut)) 0,
    100% var(--cut),
    100% 100%,
    0 100%
  );
  transition: border-color 0.24s ease, background-color 0.24s ease, box-shadow 0.24s ease;
}

.page-contact .co-tab:hover {
  border-color: var(--teal-signal);
  border-left-color: var(--teal-signal);
}

.page-contact .co-tab__no {
  display: block;
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
  color: var(--text-rock);
  transition: color 0.24s ease;
}

.page-contact .co-tab__name {
  display: block;
  margin-top: 5px;
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--text-rice);
}

.page-contact #co-t-data:checked ~ .co-tabs__labels [for="co-t-data"],
.page-contact #co-t-cite:checked ~ .co-tabs__labels [for="co-t-cite"],
.page-contact #co-t-media:checked ~ .co-tabs__labels [for="co-t-media"] {
  background: var(--ink-deep);
  border-color: var(--teal-signal);
  border-left-color: var(--teal-signal);
  box-shadow: inset 0 0 0 1px rgba(69, 241, 208, 0.2);
}

.page-contact #co-t-data:checked ~ .co-tabs__labels [for="co-t-data"] .co-tab__no,
.page-contact #co-t-cite:checked ~ .co-tabs__labels [for="co-t-cite"] .co-tab__no,
.page-contact #co-t-media:checked ~ .co-tabs__labels [for="co-t-media"] .co-tab__no {
  color: var(--teal-signal);
}

.page-contact .co-tabs__radio:focus-visible ~ .co-tabs__labels .co-tab {
  outline: 1px dashed var(--teal-signal);
  outline-offset: 3px;
}

.page-contact .co-pane {
  display: none;
  padding: var(--s3) var(--s3) var(--s4);
  background: var(--panel-locker);
  border: 1px solid var(--line-moss);
  clip-path: polygon(
    0 0,
    calc(100% - 26px) 0,
    100% 26px,
    100% 100%,
    0 100%
  );
}

.page-contact #co-t-data:checked ~ .co-tabs__panels .co-pane--data,
.page-contact #co-t-cite:checked ~ .co-tabs__panels .co-pane--cite,
.page-contact #co-t-media:checked ~ .co-tabs__panels .co-pane--media {
  display: block;
}

.page-contact .co-pane__title {
  margin: 0 0 var(--s1);
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 21px;
  line-height: 1.25;
  color: var(--text-rice);
}

.page-contact .co-pane__lede {
  margin: 0 0 var(--s3);
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--text-rock);
}

.page-contact .co-block + .co-block {
  margin-top: var(--s3);
  padding-top: var(--s3);
  border-top: 1px solid var(--line-moss);
}

.page-contact .co-block .label {
  display: block;
  margin-bottom: var(--s1);
  color: var(--teal-signal);
}

.page-contact .co-block--no .label {
  color: var(--flame-stoppage);
}

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

.page-contact .co-bullets li {
  position: relative;
  padding-left: var(--s3);
  margin-bottom: 6px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--text-rice);
}

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

.page-contact .co-bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.82em;
  width: 10px;
  height: 1px;
  background: var(--text-rock);
}

.page-contact .co-block--no .co-bullets li::before {
  background: var(--flame-stoppage);
  opacity: 0.75;
}

/* ---------- 纸白联系面板 ---------- */
.page-contact .co-channels {
  padding: var(--s4) var(--s3);
  background: var(--panel-paper);
  color: var(--panel-locker);
  clip-path: polygon(
    0 0,
    calc(100% - 26px) 0,
    100% 26px,
    100% 100%,
    0 100%
  );
}

.page-contact .co-ch__eyebrow {
  margin: 0 0 var(--s1);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--line-moss);
}

.page-contact .co-ch__title {
  margin: 0 0 var(--s3);
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(21px, 4.6vw, 28px);
  line-height: 1.2;
  color: var(--panel-locker);
}

.page-contact .co-ch__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .co-ch__item {
  padding: var(--s3) 0;
  border-bottom: 1px solid rgba(23, 64, 58, 0.22);
}

.page-contact .co-ch__item:first-child {
  padding-top: 0;
}

.page-contact .co-ch__item:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-contact .co-ch__key {
  display: block;
  margin-bottom: 6px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: var(--line-moss);
}

.page-contact .co-ch__val {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(14px, 3.8vw, 17px);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
  color: var(--panel-locker);
  overflow-wrap: anywhere;
  user-select: all;
  cursor: copy;
}

.page-contact .co-ch__val--sans {
  font-family: var(--font-sans);
  font-weight: 700;
  letter-spacing: 0;
}

.page-contact .co-ch__note {
  margin: var(--s3) 0 0;
  font-size: 13px;
  line-height: 1.78;
  color: var(--line-moss);
}

.page-contact .co-ch__note + .co-ch__note {
  padding-top: var(--s2);
  border-top: 1px solid rgba(23, 64, 58, 0.22);
}

/* ---------- 回复时序 ---------- */
.page-contact .co-timing {
  margin-top: var(--s4);
}

.page-contact .co-timing__list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 var(--s3);
  border-left: 1px solid var(--line-moss);
}

.page-contact .co-timing__list li {
  margin-bottom: var(--s3);
  font-size: 14px;
  line-height: 1.78;
  color: var(--text-rock);
}

.page-contact .co-timing__list li:last-child {
  margin-bottom: 0;
}

.page-contact .co-timing__list strong {
  color: var(--text-rice);
  font-weight: 700;
}

/* ---------- 纠错工单 ---------- */
.page-contact .co-fix {
  border-top: 1px solid var(--line-moss);
  border-bottom: 1px solid var(--line-moss);
  background: var(--panel-locker);
  padding-block: var(--s5);
}

.page-contact .co-fix__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s4);
  align-items: start;
}

.page-contact .co-fix__main {
  min-width: 0;
}

.page-contact .co-spec {
  list-style: none;
  counter-reset: spec;
  margin: var(--s3) 0 0;
  padding: 0 0 0 var(--s3);
  border-left: 1px solid var(--line-moss);
}

.page-contact .co-spec > li {
  position: relative;
  counter-increment: spec;
  padding: 0 0 var(--s3) var(--s4);
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-rice);
}

.page-contact .co-spec > li:last-child {
  padding-bottom: 0;
}

.page-contact .co-spec > li::before {
  content: "0" counter(spec);
  position: absolute;
  left: 0;
  top: 3px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
  color: var(--teal-signal);
}

.page-contact .co-spec > li strong {
  display: block;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--text-rice);
}

.page-contact .co-spec > li span {
  display: block;
  margin-top: 4px;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--text-rock);
}

.page-contact .co-note {
  margin: var(--s4) 0 0;
  padding: var(--s3);
  border-left: 2px solid var(--flame-stoppage);
  background: rgba(9, 33, 29, 0.7);
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--text-rock);
}

.page-contact .co-fix__fig {
  margin: 0;
  min-width: 0;
}

.page-contact .co-cap {
  margin: var(--s2) 0 0;
  font-size: 12px;
  line-height: 1.65;
  color: var(--text-rock);
}

/* ---------- 备案折叠 ---------- */
.page-contact .co-records {
  margin-bottom: var(--s5);
  background: var(--panel-locker);
  border: 1px solid var(--line-moss);
  clip-path: polygon(
    0 0,
    calc(100% - var(--cut)) 0,
    100% var(--cut),
    100% 100%,
    0 100%
  );
}

.page-contact .co-records > summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--s2);
  padding: var(--s3);
  cursor: pointer;
  list-style: none;
}

.page-contact .co-records > summary::-webkit-details-marker {
  display: none;
}

.page-contact .co-records__brief {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--teal-signal);
}

.page-contact .co-records__state {
  margin-left: auto;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: var(--text-rock);
}

.page-contact .co-records__state::after {
  content: "展开";
}

.page-contact .co-records[open] .co-records__state::after {
  content: "收起";
}

.page-contact .co-records__body {
  padding: 0 var(--s3) var(--s3);
}

.page-contact .co-records__body dl {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s3);
  margin: 0;
  padding-top: var(--s3);
  border-top: 1px solid var(--line-moss);
}

.page-contact .co-records__body dt {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: var(--text-rock);
}

.page-contact .co-records__body dd {
  margin: 5px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-rice);
}

/* ---------- 索引带 ---------- */
.page-contact .co-index {
  padding-bottom: var(--s5);
}

.page-contact .co-index__list {
  list-style: none;
  margin: var(--s3) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line-moss);
  border: 1px solid var(--line-moss);
}

.page-contact .co-index__list li {
  background: var(--bg-abyss);
}

.page-contact .co-index__list a {
  display: block;
  padding: var(--s3);
  text-decoration: none;
  color: var(--text-rice);
  transition: background-color 0.2s ease;
}

.page-contact .co-index__list a:hover,
.page-contact .co-index__list a:focus-visible {
  background: var(--panel-locker);
}

.page-contact .co-index__name {
  display: block;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.page-contact .co-index__desc {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--text-rock);
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-contact .co-hero__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--s4);
  }

  .page-contact .co-channels {
    padding: var(--s4);
  }

  .page-contact .co-pane {
    padding: var(--s4);
  }

  .page-contact .co-records__body dl {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--s3) var(--s4);
  }

  .page-contact .co-index__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 780px) {
  .page-contact .co-hero__inner {
    padding-block: var(--s6) var(--s5);
  }

  .page-contact .co-fix__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--s5);
  }
}

@media (min-width: 960px) {
  .page-contact .co-body {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: var(--s5);
    padding-block: var(--s6);
  }

  .page-contact .co-tabs__labels {
    gap: var(--s2);
  }

  .page-contact .co-index__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .co-tab,
  .page-contact .co-tab__no,
  .page-contact .co-index__list a {
    transition: none;
  }
}