.page-contact {
  --c-gap: clamp(14px, 2.2vw, 22px);
  --c-pad: clamp(18px, 2.6vw, 30px);
  --c-surface-2: #EFE8D7;
  --c-surface-3: #FBF6E9;
  display: block;
}

.page-contact .contact-hero__grid {
  display: grid;
  gap: clamp(18px, 3vw, 32px);
  align-items: start;
}

.page-contact .contact-hero__kicker {
  margin: 0 0 12px;
  color: var(--lime-400);
}

.page-contact .contact-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 9vw, 4.4rem);
  line-height: 0.98;
  letter-spacing: 0.015em;
  color: var(--chalk);
}

.page-contact .contact-hero__title::after {
  content: "";
  display: block;
  width: clamp(64px, 14vw, 140px);
  height: 6px;
  margin-top: clamp(16px, 3vw, 22px);
  background: linear-gradient(90deg, var(--lime-400) 0 62%, var(--alert-500) 62% 100%);
}

.page-contact .contact-hero__lead {
  margin: 22px 0 0;
  max-width: 62ch;
  color: var(--muted);
  font-size: clamp(1rem, 2.4vw, 1.1rem);
  line-height: 1.85;
}

.page-contact .contact-hero__aside {
  padding: var(--c-pad);
}

.page-contact .contact-hero__aside .plate__title {
  font-family: var(--font-mono);
  font-size: clamp(1.4rem, 4vw, 1.9rem);
  letter-spacing: 0.02em;
}

.page-contact .contact-hero__figure {
  margin: clamp(26px, 4vw, 48px) 0 0;
}

.page-contact .contact-lead {
  margin: 0 0 clamp(20px, 3vw, 30px);
  color: var(--muted);
}

/* 渠道说明牌 */
.page-contact .channel-grid {
  display: grid;
  gap: var(--c-gap);
}

.page-contact .channel-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: var(--c-pad);
  color: var(--ink-900);
  background: var(--paper-100);
  border: 1px solid var(--paper-300);
  border-top: 4px solid var(--lime-400);
  transition: transform 200ms cubic-bezier(.2, .7, .3, 1), background-color 200ms ease, border-color 200ms ease;
}

.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within {
  transform: translateY(-4px);
  background: var(--c-surface-3);
  border-top-color: var(--alert-500);
}

.page-contact .channel-card__no {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--steel-600);
}

.page-contact .channel-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 3.4vw, 1.7rem);
  letter-spacing: 0.04em;
  color: var(--ink-900);
}

.page-contact .channel-card__value {
  margin: 0;
  padding: 9px 10px;
  font-family: var(--font-mono);
  font-size: clamp(1rem, 2.8vw, 1.24rem);
  line-height: 1.45;
  letter-spacing: 0.01em;
  color: var(--ink-900);
  background: rgba(200, 255, 61, 0.22);
  border-left: 3px solid var(--lime-600);
  overflow-wrap: anywhere;
  user-select: all;
}

.page-contact .channel-card__note {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--ink-800);
}

.page-contact .channel-card__more {
  margin: 0;
  padding-top: 12px;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--steel-600);
  border-top: 1px dashed var(--paper-300);
}

/* 邮件事项 */
.page-contact .contact-mail__grid {
  gap: clamp(20px, 3vw, 34px);
}

.page-contact .contact-mail__label {
  margin: 0 0 12px;
  color: var(--lime-400);
}

.page-contact .contact-mail__list {
  margin: 0;
}

.page-contact .contact-mail__col .prose p:first-child {
  margin-top: 0;
}

.page-contact .contact-mail__col .prose p:last-child {
  margin-bottom: 0;
}

/* 资料补充清单 */
.page-contact .supply-surface {
  padding: clamp(20px, 3vw, 36px);
  color: var(--ink-900);
  background: var(--paper-100);
  border: 1px solid var(--paper-300);
}

.page-contact .supply-grid {
  display: grid;
  gap: clamp(22px, 3.4vw, 36px);
  align-items: start;
}

.page-contact .supply-intro {
  margin: 0 0 16px;
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--ink-800);
}

.page-contact .check-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px dashed var(--paper-300);
}

.page-contact .check-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 12px 10px;
  border-bottom: 1px dashed var(--paper-300);
  cursor: pointer;
  transition: background-color 180ms ease;
}

.page-contact .check-item:hover,
.page-contact .check-item:focus-within {
  background: var(--c-surface-3);
}

.page-contact .check-item:has(input:checked) {
  background: var(--c-surface-2);
}

.page-contact .check-item input {
  width: 18px;
  height: 18px;
  margin: 3px 0 0;
  accent-color: var(--lime-600);
  cursor: pointer;
}

.page-contact .check-item__text {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--ink-800);
}

.page-contact .check-item:has(input:checked) .check-item__text {
  color: var(--steel-600);
}

.page-contact .recipe {
  margin-top: 20px;
  padding: 14px 16px;
  background: var(--ink-900);
  border-left: 4px solid var(--lime-400);
}

.page-contact .recipe__label {
  margin: 0 0 8px;
  color: var(--lime-400);
}

.page-contact .recipe__line {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(0.86rem, 2.4vw, 1rem);
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--chalk);
  overflow-wrap: anywhere;
}

.page-contact .recipe__note {
  margin: 10px 0 0;
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .supply-foot {
  margin: 18px 0 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--steel-600);
}

.page-contact .supply-figure {
  margin: 0;
}

/* 共建方向 */
.page-contact .build-list {
  display: grid;
  gap: clamp(20px, 3vw, 30px);
}

.page-contact .build-item {
  padding: 4px 0 4px 16px;
  border-left: 3px solid var(--lime-400);
}

.page-contact .build-item--alert {
  border-left-color: var(--alert-500);
}

.page-contact .build-item__no {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--lime-400);
}

.page-contact .build-item--alert .build-item__no {
  color: var(--alert-300);
}

.page-contact .build-item__title {
  margin: 8px 0 10px;
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.8vw, 1.5rem);
  letter-spacing: 0.04em;
  color: var(--chalk);
}

.page-contact .build-item__body {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--muted);
}

/* 底部：到达 + 备案 */
.page-contact .contact-bottom {
  border-top: 1px dashed var(--hair);
}

.page-contact .contact-bottom__grid {
  display: grid;
  gap: clamp(24px, 3.6vw, 44px);
}

.page-contact .contact-bottom__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 3.2vw, 1.75rem);
  letter-spacing: 0.05em;
  color: var(--chalk);
}

.page-contact .contact-bottom__col .prose p:first-of-type {
  margin-top: 0;
}

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

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

.page-contact .contact-legal__key {
  min-width: 5.5em;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--steel-600);
}

.page-contact .contact-legal__val {
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--chalk);
}

.page-contact .legal-tag {
  padding: 4px 9px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--ink-900);
  background: var(--paper-100);
  border: 1px solid var(--paper-300);
}

.page-contact .contact-legal__note {
  margin: 16px 0 0;
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .contact-bottom a,
.page-contact .contact-build a,
.page-contact .contact-mail a,
.page-contact .supply-foot a {
  color: var(--lime-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(200, 255, 61, 0.4);
}

.page-contact .contact-bottom a:hover,
.page-contact .contact-build a:hover,
.page-contact .contact-mail a:hover,
.page-contact .supply-foot a:hover {
  color: var(--lime-600);
  border-bottom-color: var(--lime-600);
}

@media (min-width: 820px) {
  .page-contact .channel-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-contact .supply-grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  }

  .page-contact .contact-bottom__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 980px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1fr) minmax(260px, 340px);
    gap: clamp(28px, 4vw, 56px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .check-item {
    transition: none;
  }

  .page-contact .channel-card:hover,
  .page-contact .channel-card:focus-within {
    transform: none;
  }
}