.page-contact {
  --contact-aside-rule: var(--rule);
  padding-bottom: 64px;
}

.page-contact img {
  max-width: 100%;
  height: auto;
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumb {
  padding: 20px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-contact .breadcrumb a {
  color: var(--copper);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease);
}

.page-contact .breadcrumb a:hover {
  color: var(--cinnabar);
}

.page-contact .breadcrumb__sep {
  margin: 0 8px;
  color: var(--rule);
}

/* ---------- 页头 ---------- */
.page-contact .page-head {
  padding: 22px 0 26px;
  border-bottom: 1px solid var(--rule);
}

.page-contact .page-head__kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--copper);
}

.page-contact .page-head__title {
  margin: 10px 0 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(32px, 8.6vw, 58px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-contact .page-head__lead {
  margin-top: 16px;
  max-width: 48ch;
  font-size: 16px;
  line-height: 1.75;
  color: #3A4453;
}

/* ---------- 图片 ---------- */
.page-contact .contact-figure {
  margin: 28px 0 0;
}

.page-contact .figure__frame {
  border: 1px solid var(--rule);
  background: var(--paper-2);
  overflow: hidden;
}

.page-contact .contact-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-contact .contact-figure .figure__caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 章节骨架 ---------- */
.page-contact .section {
  margin-top: 44px;
  padding-top: 22px;
  border-top: 1px solid var(--rule);
}

.page-contact .section__kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--copper);
}

.page-contact .section__title {
  margin: 8px 0 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(24px, 5.4vw, 34px);
  line-height: 1.25;
  color: var(--ink);
}

.page-contact .section__desc {
  margin-top: 12px;
  max-width: 54ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 双栏 ---------- */
.page-contact .contact-split {
  display: grid;
  gap: 30px;
  margin-top: 26px;
}

/* ---------- 通道列表 ---------- */
.page-contact .channel-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .channel {
  display: grid;
  grid-template-columns: 26px 22px minmax(0, 1fr);
  column-gap: 12px;
  padding: 22px 0;
  border-top: 1px solid var(--rule);
}

.page-contact .channel:first-child {
  border-top: 0;
  padding-top: 4px;
}

.page-contact .channel__index {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 7px;
  padding-top: 4px;
}

.page-contact .channel__no {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  color: var(--ink);
}

.page-contact .channel__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cinnabar);
}

.page-contact .channel__icon {
  display: block;
  padding-top: 2px;
  color: var(--copper);
}

.page-contact .channel__icon svg {
  display: block;
  width: 22px;
  height: 22px;
}

.page-contact .channel__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 20px;
  line-height: 1.3;
  color: var(--ink);
}

.page-contact .channel__value {
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--ink);
  word-break: break-all;
}

.page-contact .channel__value a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid var(--cinnabar);
  transition: color var(--t-fast) var(--ease);
}

.page-contact .channel__value a:hover {
  color: var(--cinnabar);
}

.page-contact .channel__desc {
  margin-top: 8px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .channel__action {
  margin-top: 12px;
}

/* ---------- 按钮 ---------- */
.page-contact .btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--ink);
  border-radius: 0;
  background: transparent;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1.4;
  cursor: pointer;
  transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}

.page-contact .btn:hover {
  background: var(--ink);
  color: var(--paper);
}

.page-contact .btn:active {
  transform: scale(0.995);
}

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

/* ---------- 写信清单 ---------- */
.page-contact .write-kit__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 22px;
  line-height: 1.3;
  color: var(--ink);
}

.page-contact .write-kit__desc {
  margin-top: 8px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .write-kit {
  margin-top: 16px;
  padding: 14px 16px 18px;
  background: var(--paper-2);
  border-top: 3px solid var(--copper);
}

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

.page-contact .checklist__item + .checklist__item {
  border-top: 1px solid var(--rule);
}

.page-contact .checklist__label {
  position: relative;
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 13px 0;
  cursor: pointer;
}

.page-contact .checklist__input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  margin: 0;
  pointer-events: none;
}

.page-contact .checklist__box {
  position: relative;
  display: block;
  width: 20px;
  height: 20px;
  border: 1px solid var(--rule);
  background: var(--paper);
  transition: background var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.page-contact .checklist__input:checked + .checklist__box {
  background: var(--copper);
  border-color: var(--copper);
}

.page-contact .checklist__input:checked + .checklist__box::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 2px;
  width: 5px;
  height: 10px;
  border: solid var(--paper);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.page-contact .checklist__input:focus-visible + .checklist__box {
  outline: 2px solid var(--cinnabar);
  outline-offset: 2px;
}

.page-contact .checklist__text strong {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}

.page-contact .checklist__hint {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

.page-contact .meter {
  margin-top: 16px;
}

.page-contact .meter__segs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}

.page-contact .meter__seg {
  display: block;
  height: 4px;
  background: var(--rule);
  transition: background var(--t-mid) var(--ease);
}

.page-contact .write-kit:has(#chk-date:checked) .meter__seg:nth-child(1),
.page-contact .write-kit:has(#chk-path:checked) .meter__seg:nth-child(2),
.page-contact .write-kit:has(#chk-shot:checked) .meter__seg:nth-child(3) {
  background: var(--copper);
}

.page-contact .meter__note {
  margin-top: 9px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

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

.page-contact .contact-figure--aside img {
  aspect-ratio: 3 / 2;
}

/* ---------- 回复时段 ---------- */
.page-contact .contact-clock {
  display: grid;
  gap: 16px;
  padding-left: 16px;
  border-left: 4px solid var(--cinnabar);
}

.page-contact .contact-clock__time {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: clamp(34px, 9vw, 54px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-contact .contact-clock__time span {
  margin: 0 4px;
  color: var(--cinnabar);
}

.page-contact .contact-clock__body h2 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(20px, 4.6vw, 26px);
  line-height: 1.3;
  color: var(--ink);
}

.page-contact .contact-clock__body p {
  margin-top: 10px;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 自助入口 ---------- */
.page-contact .precheck {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
}

.page-contact .precheck__item {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 12px;
  padding: 16px 0;
  border-top: 1px solid var(--rule);
}

.page-contact .precheck__no {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  color: var(--copper);
  padding-top: 2px;
}

.page-contact .precheck__title {
  margin: 0;
  font-family: var(--font-body);
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.5;
}

.page-contact .precheck__title a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.page-contact .precheck__title a:hover {
  color: var(--cinnabar);
  border-bottom-color: var(--cinnabar);
}

.page-contact .precheck__desc {
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 底部横带 ---------- */
.page-contact .contact-strip {
  margin: 44px -16px 0;
  padding: 28px 16px 34px;
  background: var(--ink);
  border-top: 3px solid var(--cinnabar);
  color: var(--paper);
}

.page-contact .contact-strip__title {
  margin: 0 0 20px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(20px, 4.6vw, 26px);
  line-height: 1.3;
  color: var(--paper);
}

.page-contact .contact-strip__grid {
  display: grid;
  gap: 20px;
}

.page-contact .contact-strip__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: #93A8BA;
}

.page-contact .contact-strip__value {
  margin-top: 8px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--paper);
}

.page-contact .contact-strip__value.mono {
  font-family: var(--font-mono);
  font-weight: 500;
  letter-spacing: 0.04em;
}

.page-contact .contact-strip__value a {
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid var(--cinnabar);
  transition: color var(--t-fast) var(--ease);
}

.page-contact .contact-strip__value a:hover {
  color: var(--cinnabar-tint);
}

/* ---------- 宽屏 ---------- */
@media (min-width: 560px) {
  .page-contact .channel {
    grid-template-columns: 40px 30px minmax(0, 1fr);
    column-gap: 16px;
  }

  .page-contact .channel__icon svg {
    width: 24px;
    height: 24px;
  }
}

@media (min-width: 720px) {
  .page-contact .contact-clock {
    grid-template-columns: auto minmax(0, 1fr);
    gap: 40px;
    align-items: center;
    padding-left: 26px;
  }

  .page-contact .precheck {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 40px;
  }

  .page-contact .contact-strip {
    margin: 52px -32px 0 0;
    padding: 38px 32px 42px;
  }

  .page-contact .contact-strip__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 34px;
  }
}

@media (min-width: 960px) {
  .page-contact .contact-split {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: 48px;
  }

  .page-contact .contact-split__aside {
    padding-left: 34px;
    border-left: 1px solid var(--contact-aside-rule);
  }

  .page-contact .contact-figure img {
    aspect-ratio: 12 / 5;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .btn,
  .page-contact .checklist__box,
  .page-contact .meter__seg,
  .page-contact .breadcrumb a,
  .page-contact .channel__value a,
  .page-contact .precheck__title a,
  .page-contact .contact-strip__value a {
    transition-duration: 1ms;
  }

  .page-contact .btn:active {
    transform: none;
  }
}