.page-contact {
  --contact-gap: clamp(20px, 3vw, 44px);
  --contact-line: rgba(28, 122, 86, 0.72);
  --contact-soft: rgba(245, 241, 230, 0.82);
  color: var(--paper);
  background: var(--turf-deep);
}

.page-contact .page-shell {
  padding-bottom: clamp(48px, 7vw, 96px);
}

/* ---------- 面包屑 ---------- */
.page-contact .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: clamp(16px, 2.4vw, 26px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cool-gray);
}

.page-contact .crumbs a {
  color: var(--cool-gray);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.16s ease, border-color 0.16s ease;
}

.page-contact .crumbs a:hover,
.page-contact a:focus-visible {
  color: var(--whistle);
}

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

/* ---------- 首屏分栏 ---------- */
.page-contact .contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--contact-gap);
  padding-top: clamp(24px, 3.6vw, 52px);
}

.page-contact .contact-grid__main {
  min-width: 0;
}

.page-contact h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 6.4vw, 58px);
  line-height: 1.06;
  letter-spacing: -0.012em;
  color: var(--paper);
}

.page-contact .contact-lede {
  margin: 18px 0 0;
  max-width: 46ch;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.85;
  color: var(--contact-soft);
}

.page-contact .contact-grid__aside {
  display: grid;
  gap: 16px;
  min-width: 0;
}

@media (min-width: 900px) {
  .page-contact .contact-grid {
    grid-template-columns: minmax(0, 1.9fr) minmax(0, 1fr);
    align-items: start;
  }
}

/* ---------- 联系条目 ---------- */
.page-contact .contact-reach {
  margin-top: clamp(26px, 3.4vw, 44px);
}

.page-contact .reach-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-contact .reach {
  padding: 18px 18px 20px 20px;
  background: var(--turf-mid);
  border-left: 3px solid var(--turf-bright);
  transition: border-color 0.18s ease;
}

.page-contact .reach:hover,
.page-contact .reach:focus-within {
  border-left-color: var(--ref-red);
}

.page-contact .reach__label {
  display: block;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cool-gray);
}

.page-contact .reach__value {
  display: inline-block;
  margin-top: 10px;
  padding-bottom: 7px;
  border-bottom: 1px dashed rgba(245, 197, 24, 0.4);
  font-size: clamp(16px, 2.5vw, 23px);
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--whistle);
  word-break: break-word;
}

.page-contact .reach__value--addr {
  font-size: clamp(13.5px, 1.9vw, 17px);
  line-height: 1.6;
}

.page-contact .reach__note {
  margin: 12px 0 0;
  max-width: 52ch;
  font-size: 13px;
  line-height: 1.75;
  color: var(--cool-gray);
}

.page-contact .duty {
  margin-top: 20px;
  font-size: 13px;
  line-height: 1.78;
}

/* ---------- 侧栏媒体与目录 ---------- */
.page-contact .contact-media {
  margin: 0;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

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

.page-contact .contact-media .media__cap,
.page-contact .visit__map .media__cap {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--cool-gray);
}

.page-contact .contact-index {
  padding: 18px 16px 20px;
}

.page-contact .contact-index__title {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--fluoro);
}

.page-contact .contact-index__hint {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--contact-line);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--cool-gray);
}

.page-contact .index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
}

.page-contact .index-list a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 9px 10px;
  border-left: 2px solid transparent;
  font-size: 14px;
  line-height: 1.5;
  color: var(--paper);
  text-decoration: none;
  transition: border-color 0.16s ease, color 0.16s ease, background 0.16s ease;
}

.page-contact .index-list a .mono {
  font-size: 11px;
  color: var(--cool-gray);
  transition: color 0.16s ease;
}

.page-contact .index-list a:hover,
.page-contact .index-list a:focus-visible,
.page-contact .index-list a.is-active {
  border-left-color: var(--ref-red);
  background: var(--glass);
  color: var(--whistle);
}

.page-contact .index-list a:hover .mono,
.page-contact .index-list a:focus-visible .mono,
.page-contact .index-list a.is-active .mono {
  color: var(--whistle);
}

/* ---------- 章节通用 ---------- */
.page-contact .section-lede {
  margin: 14px 0 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.82;
  color: var(--contact-soft);
}

/* ---------- 反馈类别切换 ---------- */
.page-contact .topic-switch {
  margin-top: clamp(20px, 2.8vw, 32px);
}

.page-contact .topic-tabs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.page-contact .topic-tab {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 14px 14px 16px;
  background: var(--turf-mid);
  border: 1px solid var(--contact-line);
  border-top-width: 3px;
  font-size: 15px;
  line-height: 1.4;
  color: var(--paper);
  cursor: pointer;
  transition: border-color 0.16s ease, background 0.16s ease, color 0.16s ease;
}

.page-contact .topic-tab .mono {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--cool-gray);
  transition: color 0.16s ease;
}

.page-contact .topic-tab:hover {
  border-color: var(--whistle);
  color: var(--whistle);
}

.page-contact .topic-switch__input:focus-visible ~ .topic-tabs .topic-tab {
  outline: 2px dashed var(--fluoro);
  outline-offset: 2px;
}

.page-contact #fb-supplement:checked ~ .topic-tabs .topic-tab[for="fb-supplement"],
.page-contact #fb-correction:checked ~ .topic-tabs .topic-tab[for="fb-correction"],
.page-contact #fb-coop:checked ~ .topic-tabs .topic-tab[for="fb-coop"],
.page-contact #fb-subscribe:checked ~ .topic-tabs .topic-tab[for="fb-subscribe"] {
  border-color: var(--ref-red);
  background: var(--glass);
  color: var(--whistle);
}

.page-contact #fb-supplement:checked ~ .topic-tabs .topic-tab[for="fb-supplement"] .mono,
.page-contact #fb-correction:checked ~ .topic-tabs .topic-tab[for="fb-correction"] .mono,
.page-contact #fb-coop:checked ~ .topic-tabs .topic-tab[for="fb-coop"] .mono,
.page-contact #fb-subscribe:checked ~ .topic-tabs .topic-tab[for="fb-subscribe"] .mono {
  color: var(--whistle);
}

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

.page-contact .topic-panel {
  display: none;
  padding: 22px 18px 24px 20px;
  background: var(--turf-mid);
  border-left: 3px solid var(--whistle);
}

.page-contact #fb-supplement:checked ~ .topic-panels .topic-panel[data-topic="supplement"],
.page-contact #fb-correction:checked ~ .topic-panels .topic-panel[data-topic="correction"],
.page-contact #fb-coop:checked ~ .topic-panels .topic-panel[data-topic="coop"],
.page-contact #fb-subscribe:checked ~ .topic-panels .topic-panel[data-topic="subscribe"] {
  display: block;
}

.page-contact .topic-panel__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.3vw, 23px);
  font-weight: 700;
  line-height: 1.24;
  color: var(--paper);
}

.page-contact .topic-panel__text {
  margin: 12px 0 0;
  max-width: 60ch;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--contact-soft);
}

.page-contact .topic-panel__list {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-contact .topic-panel__list li {
  position: relative;
  padding-left: 20px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--cool-gray);
}

.page-contact .topic-panel__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 9px;
  height: 2px;
  background: var(--fluoro);
}

/* ---------- 处理流程条 ---------- */
.page-contact .flow {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  margin-top: clamp(20px, 2.8vw, 32px);
}

.page-contact .flow-step {
  position: relative;
  padding: 22px 18px 20px 20px;
  background: var(--turf-mid);
  border-top: 3px solid var(--turf-bright);
  transition: border-color 0.18s ease, background 0.18s ease;
}

.page-contact .flow-step:hover,
.page-contact .flow-step:focus-within,
.page-contact .flow-step:focus-visible {
  border-top-color: var(--ref-red);
  background: var(--turf-mid);
  outline: none;
}

.page-contact .flow-step__num {
  display: block;
  font-size: clamp(24px, 3vw, 30px);
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--whistle);
}

.page-contact .flow-step__title {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--paper);
}

.page-contact .flow-step__desc {
  margin: 10px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--cool-gray);
}

@media (min-width: 900px) {
  .page-contact .flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
  }

  .page-contact .flow-step {
    padding: 24px 20px 22px 22px;
    border-top-width: 3px;
  }

  .page-contact .flow-step:not(:first-child)::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 1px;
    background: var(--contact-line);
  }

  .page-contact .flow-step:not(:last-child)::after {
    content: "";
    position: absolute;
    right: 8px;
    top: 32px;
    width: 10px;
    height: 10px;
    border-top: 2px solid var(--ref-red);
    border-right: 2px solid var(--ref-red);
    transform: rotate(45deg);
    pointer-events: none;
  }

  .page-contact .flow-step__desc {
    max-height: 0;
    margin-top: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, opacity 0.22s ease, margin-top 0.3s ease;
  }

  .page-contact .flow-step:hover .flow-step__desc,
  .page-contact .flow-step:focus-within .flow-step__desc,
  .page-contact .flow-step:focus-visible .flow-step__desc {
    max-height: 12em;
    margin-top: 10px;
    opacity: 1;
  }
}

/* ---------- 补充与纠错清单 ---------- */
.page-contact .corrections {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  margin-top: clamp(18px, 2.6vw, 30px);
}

.page-contact .corrections__body p {
  margin: 0 0 14px;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--contact-soft);
}

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

.page-contact .submit-list {
  list-style: none;
  counter-reset: sub;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
  align-content: start;
}

.page-contact .submit-list li {
  counter-increment: sub;
  position: relative;
  padding: 14px 16px 14px 56px;
  background: var(--turf-mid);
  border-left: 2px solid var(--turf-bright);
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper);
  transition: border-color 0.16s ease;
}

.page-contact .submit-list li:hover {
  border-left-color: var(--ref-red);
}

.page-contact .submit-list li::before {
  content: counter(sub, decimal-leading-zero);
  position: absolute;
  left: 16px;
  top: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--whistle);
}

.page-contact .corrections + .note a {
  color: var(--fluoro);
  text-decoration: none;
  border-bottom: 1px solid rgba(51, 230, 192, 0.4);
  transition: color 0.16s ease, border-color 0.16s ease;
}

.page-contact .corrections + .note a:hover {
  color: var(--whistle);
  border-bottom-color: var(--whistle);
}

@media (min-width: 860px) {
  .page-contact .corrections {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: clamp(24px, 4vw, 52px);
    align-items: start;
  }
}

/* ---------- 合作与订阅 ---------- */
.page-contact .coop {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin-top: clamp(18px, 2.6vw, 30px);
}

.page-contact .coop-card {
  padding: 20px 18px 22px;
  background: var(--turf-mid);
  border-top: 3px solid var(--whistle);
  transition: border-color 0.18s ease;
}

.page-contact .coop-card:nth-child(2) {
  border-top-color: var(--ref-red);
}

.page-contact .coop-card:nth-child(3) {
  border-top-color: var(--fluoro);
}

.page-contact .coop-card:hover {
  border-top-color: var(--paper);
}

.page-contact .coop-card__idx {
  display: block;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--cool-gray);
}

.page-contact .coop-card__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.28;
  color: var(--paper);
}

.page-contact .coop-card__text {
  margin: 10px 0 0;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--cool-gray);
}

.page-contact .coop-note {
  margin-top: 16px;
  padding: 22px 20px 24px;
}

.page-contact .coop-note__title {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--ink);
  opacity: 0.62;
}

.page-contact .coop-note__text {
  margin: 12px 0 0;
  max-width: 74ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--ink);
}

.page-contact .coop-note__link {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid rgba(7, 19, 14, 0.18);
  font-size: 13.5px;
  line-height: 1.8;
  color: rgba(7, 19, 14, 0.78);
}

.page-contact .coop-note__link a {
  color: var(--ref-red);
  text-decoration: none;
  border-bottom: 1px solid rgba(212, 43, 60, 0.45);
  transition: color 0.16s ease, border-color 0.16s ease;
}

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

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

/* ---------- 到访说明 ---------- */
.page-contact .visit {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  margin-top: clamp(18px, 2.6vw, 30px);
  align-items: start;
}

.page-contact .visit__addr {
  margin: 0 0 16px;
  padding-left: 14px;
  border-left: 3px solid var(--whistle);
  font-size: clamp(14px, 1.9vw, 17px);
  line-height: 1.6;
  color: var(--whistle);
}

.page-contact .visit__body p {
  margin: 0 0 14px;
  max-width: 64ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--contact-soft);
}

.page-contact .visit__usage {
  padding-top: 14px;
  border-top: 1px solid var(--contact-line);
  font-size: 13px !important;
  color: var(--cool-gray) !important;
}

.page-contact .visit__map {
  margin: 0;
  aspect-ratio: 1 / 1;
  overflow: hidden;
}

@media (min-width: 880px) {
  .page-contact .visit {
    grid-template-columns: minmax(0, 1fr) minmax(0, 320px);
    gap: clamp(26px, 4vw, 52px);
  }
}