.page-contact {
  --paper-soft: #4F4F58;
  --paper-line: rgba(14, 14, 16, 0.14);
  --card-gap: clamp(16px, 2.4vw, 28px);
}

.page-contact [id] {
  scroll-margin-top: 76px;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding: clamp(28px, 5vw, 64px) 0 clamp(22px, 3vw, 40px);
}

.page-contact .contact-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
}

.page-contact .contact-hero__main .display {
  margin: 12px 0 18px;
}

.page-contact .contact-hero__main .lede {
  max-width: 62ch;
  color: #C8C5BC;
  font-size: clamp(16px, 1.4vw, 18px);
  line-height: 1.85;
  margin: 0;
}

.page-contact .contact-quick {
  margin: 0;
  border-top: 1px solid var(--line);
}

.page-contact .contact-quick__row {
  display: grid;
  gap: 4px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-quick__key {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--muted);
}

.page-contact .contact-quick__val {
  margin: 0;
  color: var(--paper);
  font-size: 15px;
  line-height: 1.65;
}

@media (min-width: 560px) {
  .page-contact .contact-quick__row {
    grid-template-columns: 118px minmax(0, 1fr);
    align-items: baseline;
    gap: 18px;
  }
}

@media (min-width: 960px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
  }
}

/* ---------- 章节刻度条 ---------- */
.page-contact .contact-toc {
  position: sticky;
  top: 0;
  z-index: 6;
  background: var(--ink-2);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-toc__list {
  display: flex;
  gap: clamp(16px, 3vw, 34px);
  list-style: none;
  margin: 0;
  padding: 14px 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-contact .contact-toc__list::-webkit-scrollbar {
  display: none;
}

.page-contact .contact-toc__link {
  display: inline-block;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-contact .contact-toc__link:hover,
.page-contact .contact-toc__link.is-active {
  color: var(--gold-bright);
  border-bottom-color: var(--gold);
}

/* ---------- 三类受理通道 ---------- */
.page-contact .channel-set {
  position: relative;
  display: grid;
  gap: var(--card-gap);
  margin-top: clamp(24px, 4vw, 42px);
  isolation: isolate;
}

.page-contact .channel-set__paper {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.12;
  filter: saturate(0.55) contrast(1.05);
  pointer-events: none;
}

.page-contact .channel-card {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: clamp(20px, 3vw, 32px);
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-left: 3px solid var(--gold);
  box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.35);
}

.page-contact .channel-card__index {
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.28em;
  color: var(--gold);
}

.page-contact .channel-card__title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(20px, 2.4vw, 26px);
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .channel-card__desc {
  margin: 0;
  color: #C2BFB6;
  font-size: 15px;
  line-height: 1.85;
}

.page-contact .channel-card__need {
  list-style: none;
  margin: 0;
  padding: 14px 0 0;
  border-top: 1px dashed var(--line);
  display: grid;
  gap: 8px;
}

.page-contact .channel-card__need li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .channel-card__need li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 6px;
  height: 6px;
  border: 1px solid var(--gold);
  transform: rotate(45deg);
}

.page-contact .channel-card__mail {
  align-self: flex-start;
  margin-top: auto;
  padding-bottom: 3px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--gold-bright);
  text-decoration: none;
  border-bottom: 1px solid rgba(201, 162, 39, 0.4);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-contact .channel-card__mail:hover {
  color: var(--paper);
  border-bottom-color: var(--gold);
}

@media (min-width: 960px) {
  .page-contact .channel-set {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }

  .page-contact .channel-card:nth-of-type(2) {
    margin-top: 34px;
  }

  .page-contact .channel-card:nth-of-type(3) {
    margin-top: 68px;
  }
}

/* ---------- 米金纸信笺区块 ---------- */
.page-contact .section--paper {
  background: var(--paper);
  color: var(--ink);
}

.page-contact .letter-grid {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
}

.page-contact .letter-kicker {
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.3em;
  color: #7C6516;
}

.page-contact .letter-main h2 {
  margin: 12px 0 18px;
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(23px, 3.4vw, 36px);
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-contact .letter-body {
  margin: 0;
  max-width: 60ch;
  font-size: clamp(15px, 1.3vw, 17px);
  line-height: 1.9;
  color: #2B2B31;
}

.page-contact .contact-lines {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  border-top: 1px solid var(--paper-line);
}

.page-contact .contact-line {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--paper-line);
}

.page-contact .contact-line__key {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--paper-soft);
}

.page-contact .contact-line__val {
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink);
  word-break: break-word;
}

.page-contact a.contact-line__val {
  justify-self: start;
  text-decoration: none;
  color: #6B5510;
  border-bottom: 1px solid rgba(107, 85, 16, 0.4);
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

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

@media (min-width: 640px) {
  .page-contact .contact-line {
    grid-template-columns: 128px minmax(0, 1fr);
    align-items: baseline;
    gap: 20px;
  }
}

.page-contact .letter-figure {
  margin: 0;
  padding: 10px;
  background: rgba(255, 255, 255, 0.42);
  border: 1px solid rgba(14, 14, 16, 0.22);
  box-shadow: 8px 8px 0 rgba(14, 14, 16, 0.08);
}

.page-contact .letter-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.page-contact .letter-figure figcaption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.75;
  color: var(--paper-soft);
}

@media (min-width: 960px) {
  .page-contact .letter-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
  }
}

/* ---------- 受理边界 ---------- */
.page-contact .scope-grid {
  display: grid;
  gap: var(--card-gap);
  margin-top: clamp(24px, 3vw, 38px);
}

.page-contact .scope-panel {
  padding: clamp(20px, 3vw, 30px);
  background: var(--ink-2);
  border: 1px solid var(--line);
}

.page-contact .scope-panel--out {
  background: transparent;
  border-style: dashed;
}

.page-contact .scope-panel__title {
  margin: 0 0 18px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.26em;
  color: var(--gold);
}

.page-contact .scope-panel--out .scope-panel__title {
  color: var(--muted);
}

.page-contact .scope-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-contact .scope-list__item {
  display: grid;
  gap: 5px;
}

.page-contact .scope-list__item strong {
  font-weight: 600;
  font-size: 15px;
  line-height: 1.6;
  color: var(--paper);
}

.page-contact .scope-list__item span {
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted);
}

@media (min-width: 860px) {
  .page-contact .scope-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ---------- 自查清单 ---------- */
.page-contact .checklist {
  list-style: none;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-contact .checklist__item {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 17px 4px;
  border-bottom: 1px solid var(--line);
}

.page-contact .checklist__box {
  appearance: none;
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  margin: 2px 0 0;
  background: var(--ink-2);
  border: 1px solid var(--line);
  display: grid;
  place-content: center;
  cursor: pointer;
  transition: background 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-contact .checklist__box::after {
  content: "";
  width: 9px;
  height: 5px;
  margin-top: -2px;
  border-left: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  transform: rotate(-45deg) scale(0);
  transition: transform 0.18s var(--ease);
}

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

.page-contact .checklist__box:checked::after {
  transform: rotate(-45deg) scale(1);
}

.page-contact .checklist__box:focus-visible {
  outline: 2px solid var(--gold-bright);
  outline-offset: 3px;
}

.page-contact .checklist__label {
  display: grid;
  gap: 5px;
  cursor: pointer;
}

.page-contact .checklist__title {
  font-size: 15px;
  line-height: 1.65;
  color: var(--paper);
}

.page-contact .checklist__hint {
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 档案纠错 ---------- */
.page-contact .correction {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  margin-top: clamp(24px, 3vw, 38px);
}

.page-contact .correction__label {
  margin: 0 0 4px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--gold);
}

.page-contact .correction__steps {
  list-style: none;
  counter-reset: fix;
  margin: 0;
  padding: 0;
}

.page-contact .correction__steps li {
  position: relative;
  counter-increment: fix;
  padding: 16px 0 16px 44px;
  border-bottom: 1px solid var(--line);
  font-size: 14.5px;
  line-height: 1.85;
  color: #C2BFB6;
}

.page-contact .correction__steps li::before {
  content: counter(fix, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 18px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-contact .correction__block--side {
  padding: clamp(20px, 3vw, 28px);
  background: var(--ink-2);
  border: 1px solid var(--line);
  box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.32);
}

.page-contact .correction__body {
  margin: 14px 0 22px;
  font-size: 14.5px;
  line-height: 1.9;
  color: #C2BFB6;
}

@media (min-width: 900px) {
  .page-contact .correction {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: start;
  }
}

/* ---------- 自助路径 ---------- */
.page-contact .routes {
  display: grid;
  gap: 1px;
  margin-top: clamp(24px, 3vw, 38px);
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .route-card {
  display: grid;
  gap: 8px;
  padding: clamp(18px, 2.6vw, 26px);
  background: var(--ink);
  text-decoration: none;
  transition: background 0.18s var(--ease);
}

.page-contact .route-card:hover {
  background: var(--ink-2);
}

.page-contact .route-card__route {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.page-contact .route-card__name {
  font-family: var(--serif);
  font-weight: 900;
  font-size: 19px;
  line-height: 1.4;
  color: var(--paper);
}

.page-contact .route-card__desc {
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted);
}

@media (min-width: 640px) {
  .page-contact .routes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1040px) {
  .page-contact .routes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 动效退化 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-toc__link,
  .page-contact .channel-card__mail,
  .page-contact .checklist__box,
  .page-contact .checklist__box::after,
  .page-contact a.contact-line__val,
  .page-contact .route-card {
    transition: none;
  }
}