.page-contact {
  background: var(--ink);
  color: var(--text);
  overflow-x: hidden;
}

.page-contact .shell {
  min-width: 0;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-h) + 28px) 0 56px;
  background:
    radial-gradient(90% 70% at 92% 4%, rgba(56, 242, 208, 0.12), transparent 62%),
    linear-gradient(168deg, var(--green-900) 0%, var(--ink) 64%);
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  top: 72px;
  right: -70px;
  width: 220px;
  height: 280px;
  background: var(--wine);
  opacity: 0.34;
  clip-path: polygon(38% 0, 100% 0, 62% 100%, 0 100%);
  pointer-events: none;
}

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

.page-contact .contact-hero__head {
  max-width: 900px;
}

.page-contact .contact-hero__title {
  margin: 14px 0 0 -0.045em;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(52px, 15vw, 128px);
  line-height: 0.86;
  letter-spacing: -0.03em;
  color: var(--text);
}

.page-contact .contact-hero__title-line {
  display: block;
}

.page-contact .contact-hero__title-line--accent {
  color: var(--cyan);
}

.page-contact .contact-hero__lede {
  margin: 24px 0 0;
  max-width: 56ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
}

.page-contact .contact-hero__facts {
  list-style: none;
  margin: 36px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .contact-hero__fact {
  background: var(--green-900);
  padding: 16px 18px;
  display: flex;
  align-items: baseline;
  gap: 12px;
  min-width: 0;
}

.page-contact .contact-hero__fact-num {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--cyan);
  flex: none;
}

.page-contact .contact-hero__fact-label {
  font-size: 13px;
  line-height: 1.5;
  color: var(--text-dim);
}

.page-contact .contact-hero__figure {
  margin: 40px 0 0;
  border: 1px solid var(--line);
  background: var(--green-900);
}

.page-contact .contact-hero__figure .figure__img img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

/* ---------- 事务分类带 ---------- */
.page-contact .contact-desk {
  padding: 64px 0;
  background: var(--ink);
}

.page-contact .contact-desk__head {
  max-width: 660px;
}

.page-contact .contact-desk__title {
  margin: 10px 0 0;
  font-family: var(--font-head);
  font-size: clamp(26px, 5.4vw, 40px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.page-contact .contact-desk__note {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-contact .contact-desk__band {
  margin-top: 32px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .desk-item {
  background: var(--green-900);
  min-width: 0;
}

.page-contact .desk-item__tab {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 12px;
  padding: 18px 20px;
  border-left: 2px solid transparent;
  transition: background 180ms var(--ease), border-color 180ms var(--ease);
}

.page-contact .desk-item__tab::-webkit-details-marker {
  display: none;
}

.page-contact .desk-item__tab:hover {
  background: var(--green-700);
}

.page-contact .desk-item__tab:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: -2px;
}

.page-contact .desk-item[open] > .desk-item__tab {
  background: var(--green-700);
  border-left-color: var(--cyan);
}

.page-contact .desk-item__code {
  align-self: center;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-contact .desk-item__name {
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-contact .desk-item__hint {
  grid-column: 1 / -1;
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-dim);
}

.page-contact .desk-item__body {
  padding: 18px 20px 22px;
  border-top: 1px solid var(--line);
}

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

.page-contact .desk-list li {
  margin: 8px 0;
  font-size: 15px;
  line-height: 1.68;
  color: var(--text);
}

.page-contact .desk-list li::marker {
  color: var(--cyan);
}

.page-contact .desk-item__link {
  margin: 16px 0 0;
}

.page-contact .textlink {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 242, 208, 0.42);
  padding-bottom: 2px;
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

.page-contact .textlink:hover {
  color: var(--cyan-soft);
  border-bottom-color: var(--cyan-soft);
}

.page-contact .textlink:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

/* ---------- 联系渠道 + 纠错清单 ---------- */
.page-contact .contact-channels {
  padding: 8px 0 64px;
  background: var(--ink);
}

.page-contact .contact-channels__grid {
  row-gap: 40px;
}

.page-contact .contact-channels__col {
  min-width: 0;
}

.page-contact .contact-channels__panel {
  position: relative;
  padding: 26px 22px 28px;
  border: 1px solid var(--line);
  background: var(--green-900);
}

.page-contact .contact-channels__panel::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  right: -1px;
  height: 2px;
  background: var(--cyan);
}

.page-contact .contact-channels__title {
  margin: 10px 0 0;
  font-family: var(--font-head);
  font-size: clamp(24px, 5vw, 32px);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.page-contact .channel-list {
  margin: 22px 0 0;
  padding: 0;
}

.page-contact .channel-row {
  padding: 16px 0;
  border-top: 1px solid var(--line);
  min-width: 0;
}

.page-contact .channel-row__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.page-contact .channel-row__val {
  margin: 8px 0 0;
  min-width: 0;
}

.page-contact .copyable {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: clamp(16px, 4.4vw, 22px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--cyan-soft);
  word-break: break-word;
  cursor: text;
  user-select: all;
  -webkit-user-select: all;
  transition: color 160ms var(--ease);
}

.page-contact .copyable:hover {
  color: var(--cyan);
}

.page-contact .channel-row__note {
  display: block;
  margin-top: 8px;
  max-width: 52ch;
  font-size: 13px;
  line-height: 1.68;
  color: var(--text-dim);
}

.page-contact .contact-channels__callout {
  margin-top: 22px;
}

.page-contact .checklist-card {
  padding: 22px 20px 26px;
  border: 1px solid var(--line);
  background: var(--green-900);
  min-width: 0;
}

.page-contact .checklist-card__figure {
  margin: 0 0 22px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line);
}

.page-contact .checklist-card__figure .figure__img img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
  filter: saturate(0.85);
}

.page-contact .checklist-card__title {
  margin: 0;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-contact .checklist {
  counter-reset: ck;
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
}

.page-contact .checklist__item {
  counter-increment: ck;
  position: relative;
  padding: 13px 0 13px 42px;
  border-top: 1px solid var(--line);
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--text);
}

.page-contact .checklist__item::before {
  content: counter(ck, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 13px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

/* ---------- 回复节奏 ---------- */
.page-contact .contact-sla {
  padding: 64px 0;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, var(--ink) 0%, var(--green-900) 100%);
}

.page-contact .contact-sla__grid {
  row-gap: 32px;
  align-items: start;
}

.page-contact .contact-sla__figure {
  min-width: 0;
}

.page-contact .contact-sla__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(88px, 26vw, 168px);
  line-height: 0.82;
  letter-spacing: -0.05em;
  color: var(--orange);
}

.page-contact .contact-sla__unit {
  display: block;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.page-contact .contact-sla__body {
  min-width: 0;
}

.page-contact .contact-sla__title {
  margin: 10px 0 0;
  font-family: var(--font-head);
  font-size: clamp(24px, 4.8vw, 34px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.page-contact .sla-list {
  margin: 20px 0 0;
  padding-left: 18px;
}

.page-contact .sla-list li {
  margin: 10px 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--text);
}

.page-contact .sla-list li::marker {
  color: var(--orange);
}

.page-contact .sla-list strong {
  font-weight: 700;
  color: var(--cyan-soft);
}

/* ---------- 站点信息 ---------- */
.page-contact .contact-info {
  padding: 64px 0;
  background: var(--ink);
}

.page-contact .contact-info__title {
  margin: 10px 0 0;
  font-family: var(--font-head);
  font-size: clamp(24px, 4.8vw, 34px);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.page-contact .info-grid {
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .info-grid__item {
  background: var(--green-900);
  padding: 16px 18px;
  min-width: 0;
}

.page-contact .info-grid__item dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.page-contact .info-grid__item dd {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  overflow-wrap: anywhere;
}

/* ---------- 备案收束 ---------- */
.page-contact .contact-stamp {
  padding: 56px 0 88px;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, var(--green-900) 0%, var(--ink) 100%);
}

.page-contact .contact-stamp__label {
  margin: 10px 0 0;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text-dim);
}

.page-contact .contact-stamp__num {
  margin: 14px 0 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(30px, 8.6vw, 92px);
  line-height: 1.02;
  letter-spacing: -0.03em;
  color: var(--cyan-soft);
  overflow-wrap: anywhere;
}

.page-contact .contact-stamp__note {
  margin: 22px 0 0;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-dim);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-contact .contact-hero__facts {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-contact .channel-row {
    display: grid;
    grid-template-columns: 132px 1fr;
    gap: 4px 20px;
    align-items: baseline;
  }

  .page-contact .channel-row__val {
    margin: 0;
  }

  .page-contact .info-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero {
    padding: calc(var(--header-h) + 64px) 0 84px;
  }

  .page-contact .contact-hero::before {
    top: 96px;
    right: -50px;
    width: 300px;
    height: 380px;
  }

  .page-contact .contact-hero__lede {
    font-size: 17px;
  }

  .page-contact .contact-hero__figure {
    margin-top: 52px;
    max-width: 1180px;
  }

  .page-contact .contact-hero__figure .figure__img img {
    aspect-ratio: 16 / 5;
  }

  .page-contact .contact-desk {
    padding: 104px 0;
  }

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

  .page-contact .contact-channels {
    padding: 32px 0 104px;
  }

  .page-contact .contact-channels__panel {
    padding: 32px 30px 34px;
  }

  .page-contact .checklist-card {
    padding: 28px 26px 32px;
  }

  .page-contact .contact-sla {
    padding: 104px 0;
  }

  .page-contact .contact-info {
    padding: 104px 0;
  }

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

  .page-contact .contact-stamp {
    padding: 72px 0 128px;
  }
}

@media (min-width: 1200px) {
  .page-contact .contact-channels__grid {
    align-items: start;
  }

  .page-contact .checklist-card {
    margin-top: 48px;
  }
}