.page-contact {
  padding-bottom: 80px;
}

.page-contact .breadcrumb {
  padding-top: 28px;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding: 26px 0 42px;
  border-bottom: 1px solid var(--line-faint);
}

.page-contact .contact-hero__title {
  margin: 14px 0 0;
  max-width: 22ch;
  font-size: clamp(1.8rem, 5.4vw, 3.1rem);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-contact .contact-hero__lead {
  margin: 20px 0 0;
  max-width: 62ch;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--text-2);
}

/* ---------- 主体两栏 ---------- */
.page-contact .contact-grid {
  display: grid;
  gap: 40px;
  padding-top: 44px;
}

.page-contact .channels {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-contact .contact-column {
  display: grid;
  gap: 48px;
  min-width: 0;
}

/* ---------- 渠道卡 ---------- */
.page-contact .channel-card {
  position: relative;
  padding: 22px 20px 22px 26px;
  background: var(--ink-800);
  border: 1px solid var(--line-faint);
  border-radius: var(--radius);
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--line);
}

.page-contact .channel-card--email::before {
  background: var(--signal);
}

.page-contact .channel-card--phone::before {
  background: var(--signal);
  opacity: 0.62;
}

.page-contact .channel-card__label {
  margin: 0;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-3);
}

.page-contact .channel-card__value {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.0625rem;
  line-height: 1.45;
  color: var(--text);
  overflow-wrap: anywhere;
}

.page-contact .channel-card__value--addr {
  font-family: var(--font-sans);
  font-size: 1rem;
  letter-spacing: 0.01em;
}

.page-contact .channel-card__use {
  margin: 14px 0 0;
  font-size: 0.9375rem;
  line-height: 1.78;
  color: var(--text-2);
}

.page-contact .channel-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 0 0;
}

/* ---------- 视觉 ---------- */
.page-contact .img-frame {
  margin: 0;
}

.page-contact .img-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
}

.page-contact .img-frame__caption {
  margin-top: 10px;
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  color: var(--text-3);
}

/* ---------- 通用区块 ---------- */
.page-contact .contact-block {
  display: grid;
  gap: 16px;
  min-width: 0;
}

.page-contact .contact-block__title {
  margin: 0;
  font-size: clamp(1.2rem, 2.6vw, 1.55rem);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-contact .contact-block__intro {
  margin: 0;
  max-width: 62ch;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--text-2);
}

/* ---------- 场景清单 ---------- */
.page-contact .scenario-grid {
  display: grid;
  gap: 28px;
}

.page-contact .scenario-group {
  border-top: 1px solid var(--line-faint);
  padding-top: 18px;
}

.page-contact .scenario-group__title {
  margin: 0 0 14px;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-3);
}

.page-contact .scenario-group--service .scenario-group__title {
  color: var(--signal);
}

.page-contact .scenario-group--partner .scenario-group__title {
  color: var(--away);
}

.page-contact .scenario-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 13px;
}

.page-contact .scenario-list li {
  position: relative;
  padding-left: 20px;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--text-2);
}

.page-contact .scenario-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 2px;
  background: var(--line);
}

.page-contact .scenario-group--service .scenario-list li::before {
  background: var(--signal);
}

.page-contact .scenario-group--partner .scenario-list li::before {
  background: var(--away);
}

/* ---------- 异议清单 ---------- */
.page-contact .checklist {
  padding: 24px 20px;
  background: var(--ink-800);
  border: 1px solid var(--line-faint);
  border-radius: var(--radius);
}

.page-contact .checklist__heading {
  margin: 0;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--text);
}

.page-contact .checklist__hint {
  margin: 8px 0 14px;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--text-3);
}

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

.page-contact .checklist__item label {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-faint);
  cursor: pointer;
}

.page-contact .checklist__item:last-child label {
  border-bottom: 0;
}

.page-contact .checklist__item input {
  flex: 0 0 auto;
  position: relative;
  width: 20px;
  height: 20px;
  margin: 2px 0 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: transparent;
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-contact .checklist__item input:checked {
  border-color: var(--signal);
  background: var(--signal-dim);
}

.page-contact .checklist__item input:checked::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 1px;
  width: 5px;
  height: 11px;
  border-right: 2px solid var(--signal);
  border-bottom: 2px solid var(--signal);
  transform: rotate(45deg);
}

.page-contact .checklist__item input:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

.page-contact .checklist__text {
  display: block;
  min-width: 0;
}

.page-contact .checklist__name {
  display: block;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text);
}

.page-contact .checklist__desc {
  display: block;
  margin-top: 4px;
  font-size: 0.875rem;
  line-height: 1.72;
  color: var(--text-2);
}

.page-contact .checklist__status {
  margin: 18px 0 0;
  padding: 12px 14px;
  border-left: 2px solid var(--line);
  background: var(--ink-900);
  font-size: 0.875rem;
  line-height: 1.72;
  color: var(--text-2);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-contact .checklist__status-on {
  display: none;
}

.page-contact .checklist:not(:has(input:not(:checked))) .checklist__status {
  border-left-color: var(--signal);
  color: var(--text);
}

.page-contact .checklist:not(:has(input:not(:checked))) .checklist__status-on {
  display: inline;
}

.page-contact .checklist:not(:has(input:not(:checked))) .checklist__status-off {
  display: none;
}

/* ---------- 合作与响应 ---------- */
.page-contact .contact-band {
  display: grid;
  gap: 34px;
  padding: 30px 22px;
  background: var(--ink-700);
  border-radius: var(--radius);
}

.page-contact .contact-band__col {
  display: grid;
  gap: 14px;
  align-content: start;
  min-width: 0;
}

.page-contact .plain-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .plain-list li {
  position: relative;
  padding-left: 18px;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--text-2);
}

.page-contact .plain-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 6px;
  height: 1px;
  background: var(--line);
}

.page-contact .hours {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--signal);
}

/* ---------- 自助入口 ---------- */
.page-contact .self-list {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  border-top: 1px solid var(--line-faint);
}

.page-contact .self-list a {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: baseline;
  column-gap: 16px;
  row-gap: 6px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-faint);
  text-decoration: none;
}

.page-contact .self-list__name {
  font-size: 1.0625rem;
  font-weight: 800;
  color: var(--text);
  transition: color var(--dur) var(--ease);
}

.page-contact .self-list__arrow {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--signal);
  transition: transform var(--dur) var(--ease);
}

.page-contact .self-list__desc {
  grid-column: 1 / -1;
  font-size: 0.9375rem;
  line-height: 1.72;
  color: var(--text-2);
}

.page-contact .self-list a:hover .self-list__name,
.page-contact .self-list a:focus-visible .self-list__name {
  color: var(--signal);
}

.page-contact .self-list a:hover .self-list__arrow,
.page-contact .self-list a:focus-visible .self-list__arrow {
  transform: translateX(4px);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-contact .scenario-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 32px;
  }

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

@media (min-width: 900px) {
  .page-contact .contact-grid {
    grid-template-columns: 300px minmax(0, 1fr);
    gap: 56px;
    padding-top: 56px;
  }

  .page-contact .channels {
    position: sticky;
    top: calc(var(--topbar-h) + 24px);
  }

  .page-contact .contact-band {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 56px;
    padding: 36px 34px;
  }
}

@media (min-width: 1140px) {
  .page-contact .contact-grid {
    grid-template-columns: 320px minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .self-list__arrow,
  .page-contact .self-list__name {
    transition: none;
  }
}