.page-contact {
  --contact-mail: clamp(1.1rem, 5vw, 2.6rem);
  --contact-tel: clamp(1.5rem, 7vw, 3.6rem);
  --contact-addr: clamp(.95rem, 3.1vw, 1.5rem);
  --contact-shift: 16px;
}

/* ---------- 首屏：非对称两栏 ---------- */
.page-contact .contact-top .breadcrumb {
  margin-bottom: 28px;
}

.page-contact .contact-top__grid {
  display: grid;
  gap: 40px;
}

.page-contact .page-head__title {
  max-width: 18ch;
}

.page-contact .page-head__lede {
  max-width: 36ch;
  margin-top: 18px;
}

.page-contact .contact-top__figure {
  margin: 34px 0 0;
}

.page-contact .contact-top__label {
  margin: 44px 0 20px;
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--score-grey);
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

/* 渠道列表 */
.page-contact .channels {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 30px;
}

.page-contact .channel {
  display: grid;
  gap: 10px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line);
}

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

.page-contact .channel__key {
  font-size: 11px;
  letter-spacing: .24em;
  color: var(--score-grey);
}

.page-contact .channel__value {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  line-height: 1.18;
  color: var(--white);
  overflow-wrap: anywhere;
  word-break: break-word;
  max-width: 100%;
  width: fit-content;
  padding-bottom: 10px;
}

.page-contact .channel--mail .channel__value {
  font-size: var(--contact-mail);
  border-bottom: 3px solid var(--lime-signal);
}

.page-contact .channel--tel .channel__value {
  font-size: var(--contact-tel);
  letter-spacing: .02em;
  border-bottom: 3px solid var(--lime-signal);
}

.page-contact .channel--addr .channel__value {
  font-size: var(--contact-addr);
  line-height: 1.5;
  color: var(--white);
  border-bottom: 3px solid var(--line);
}

.page-contact .channel__hint {
  font-size: 13px;
  line-height: 1.7;
  color: var(--score-grey);
  max-width: 40ch;
}

/* 右栏：受理说明 + 时钟 */
.page-contact .contact-top__side {
  background: var(--ink-800);
  border: var(--frame) solid var(--line);
  box-shadow: var(--hard-shadow);
  padding: 24px 22px 26px;
}

.page-contact .contact-top__side-label {
  font-size: 11px;
  letter-spacing: .24em;
  color: var(--lime-signal);
  margin: 0 0 14px;
}

.page-contact .contact-top__side-text {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--white);
}

.page-contact .contact-top__note {
  margin: 22px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.75;
  color: var(--score-grey);
}

.page-contact .clock {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.page-contact .clock__label {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--lime-signal);
}

.page-contact .clock__track {
  position: relative;
  height: 30px;
  border: 1px solid var(--line);
  background:
    repeating-linear-gradient(90deg,
      transparent 0 13px,
      var(--line) 13px 14px);
  overflow: hidden;
}

.page-contact .clock__fill {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg,
    rgba(200, 255, 61, .34) 0%,
    rgba(200, 255, 61, .16) 55%,
    rgba(143, 191, 74, .06) 100%);
  border-right: 2px solid var(--lime-signal);
}

.page-contact .clock__marks {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 10px;
  font-size: 11px;
  letter-spacing: .04em;
  color: var(--score-grey);
}

/* ---------- 受理范围：错位编号条块 ---------- */
.page-contact .ranges {
  display: grid;
  gap: 22px;
  margin-top: 34px;
}

.page-contact .range {
  background: var(--paper);
  border: var(--frame) solid var(--paper-ink);
  padding: 26px 22px 28px;
  box-shadow: 6px 6px 0 rgba(16, 35, 29, .18);
  scroll-margin-top: 96px;
  transition: box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .range__num {
  margin: 0 0 18px;
  font-size: 42px;
  line-height: 1;
  letter-spacing: .05em;
  color: var(--paper-ink);
  border-bottom: 4px solid var(--lime-signal);
  padding-bottom: 10px;
  width: fit-content;
}

.page-contact .range:nth-child(2) .range__num {
  border-bottom-color: var(--amber-mark);
}

.page-contact .range:nth-child(3) .range__num {
  border-bottom-color: var(--line);
}

.page-contact .range:target {
  border-color: var(--paper-ink);
  box-shadow: 8px 8px 0 var(--lime-signal);
}

.page-contact .range__title {
  margin: 0 0 12px;
  font-size: 21px;
  letter-spacing: .06em;
  color: var(--paper-ink);
}

.page-contact .range__text {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--paper-ink);
}

.page-contact .range__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
  border-top: 1px solid var(--paper-line);
  padding-top: 16px;
}

.page-contact .range__list li {
  font-size: 13px;
  line-height: 1.75;
  color: var(--paper-grey);
  padding-left: 16px;
  position: relative;
}

.page-contact .range__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 7px;
  height: 2px;
  background: var(--lime-mute);
}

.page-contact .range:nth-child(2) .range__list li::before {
  background: var(--amber-mark);
}

.page-contact .range:nth-child(3) .range__list li::before {
  background: var(--line);
}

/* ---------- 回复节奏 + 自查清单 ---------- */
.page-contact .contact-pace__grid {
  display: grid;
  gap: 42px;
}

.page-contact .contact-pace__lede {
  margin: 16px 0 0;
  max-width: 34ch;
  color: var(--white);
  line-height: 1.85;
}

.page-contact .pace-rows {
  display: grid;
  gap: 16px;
  margin-top: 30px;
}

.page-contact .pace-row {
  background: var(--ink-700);
  border-left: 4px solid var(--line);
  padding: 18px 20px 20px;
}

.page-contact .pace-row:first-child {
  border-left-color: var(--lime-signal);
}

.page-contact .pace-row__key {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--lime-signal);
}

.page-contact .pace-row:last-child .pace-row__key {
  color: var(--lime-mute);
}

.page-contact .pace-row__val {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--white);
}

.page-contact .checklist__title {
  margin: 0;
  font-size: 19px;
  letter-spacing: .06em;
  color: var(--white);
}

.page-contact .checklist__lede {
  margin: 12px 0 22px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--score-grey);
  max-width: 32ch;
}

.page-contact .checklist .index-list__item {
  border-bottom: 1px solid var(--line);
}

.page-contact .checklist .index-list__num {
  color: var(--lime-mute);
}

.page-contact .checklist .index-list__link {
  color: var(--white);
  border-bottom: 2px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .checklist .index-list__link:hover,
.page-contact .checklist .index-list__link:focus-visible {
  color: var(--lime-signal);
  border-bottom-color: var(--lime-signal);
}

.page-contact .checklist .index-list__meta {
  color: var(--score-grey);
}

/* ---------- 高频类别条带 ---------- */
.page-contact .contact-topics .section__head {
  margin-bottom: 26px;
}

.page-contact .contact-topics .band__track {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  padding: 4px 2px 14px;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.page-contact .topic {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  padding: 12px 20px;
  border: 2px solid var(--paper-ink);
  background: var(--paper);
  color: var(--paper-ink);
  font-size: 15px;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  scroll-snap-align: start;
  transition: border-color var(--dur) var(--ease),
              background-color var(--dur) var(--ease),
              color var(--dur) var(--ease);
}

.page-contact .topic:hover,
.page-contact .topic:focus-visible {
  border-color: var(--amber-mark);
  background: var(--amber-mark);
  color: var(--paper-ink);
}

.page-contact .contact-topics__note {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--paper-grey);
}

/* ---------- 站点归属 ---------- */
.page-contact .origin__grid {
  align-items: start;
  gap: 40px;
}

.page-contact .origin__text {
  margin: 16px 0 0;
  max-width: 34ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--white);
}

.page-contact .origin__meta {
  display: grid;
  gap: 0;
  margin: 30px 0 0;
}

.page-contact .origin__row {
  display: grid;
  gap: 6px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .origin__row dt {
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--score-grey);
}

.page-contact .origin__row dd {
  margin: 0;
  font-size: 17px;
  color: var(--white);
  overflow-wrap: anywhere;
}

.page-contact .origin__footnote {
  margin: 20px 0 0;
  font-size: 12px;
  line-height: 1.75;
  color: var(--score-grey);
  max-width: 36ch;
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .ranges {
    gap: 26px;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-top__grid {
    grid-template-columns: minmax(0, 1.62fr) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-contact .contact-top__side {
    position: sticky;
    top: 104px;
    padding: 28px 26px 30px;
  }

  .page-contact .contact-pace__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 60px;
    align-items: start;
  }

  .page-contact .origin__grid {
    align-items: center;
    gap: 56px;
  }
}

@media (min-width: 960px) {
  .page-contact .ranges {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 30px;
  }

  .page-contact .range:nth-child(2) {
    margin-top: var(--contact-shift);
  }

  .page-contact .range:nth-child(3) {
    margin-top: calc(var(--contact-shift) * 2);
  }
}

@media (min-width: 1200px) {
  .page-contact .contact-top__grid {
    grid-template-columns: minmax(0, 1.75fr) minmax(0, 1fr);
    gap: 72px;
  }

  .page-contact .page-head__title {
    max-width: 20ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .range,
  .page-contact .topic,
  .page-contact .checklist .index-list__link {
    transition: none;
  }
}