.page-contact {
  --card-pad: calc(var(--step) * 3);
  background: var(--ink);
  color: var(--text);
  font-family: var(--font-body);
  padding-bottom: calc(var(--step) * 10);
  overflow-x: clip;
}

.page-contact .breadcrumbs ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-contact .breadcrumbs ol li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--line);
}

.page-contact .breadcrumbs a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.18s var(--ease);
}

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

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: calc(var(--step) * 9) var(--gutter) calc(var(--step) * 4);
  display: grid;
  gap: calc(var(--step) * 4);
  align-items: center;
}

.page-contact .contact-hero__copy {
  display: grid;
  gap: calc(var(--step) * 2);
  align-content: start;
  min-width: 0;
}

.page-contact .contact-hero h1 {
  margin: 0;
  font-family: var(--font-body);
  font-size: clamp(30px, 4.6vw, 46px);
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-contact .contact-hero__lead {
  margin: 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.78;
  color: var(--muted);
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: calc(var(--step) * 0.5);
}

.page-contact .contact-hero__media {
  position: relative;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  overflow: hidden;
  min-width: 0;
}

.page-contact .contact-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(0.55) brightness(0.78);
}

.page-contact .contact-hero__media::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 52px;
  height: 52px;
  border-top: 1px solid var(--cyan);
  border-left: 1px solid var(--cyan);
  opacity: 0.7;
  pointer-events: none;
}

@media (min-width: 900px) {
  .page-contact .contact-hero {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.85fr);
    gap: calc(var(--step) * 6);
    padding-top: calc(var(--step) * 11);
  }
}

/* ---------- 通用区块 ---------- */

.page-contact .contact-section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: calc(var(--step) * 5) var(--gutter);
}

.page-contact .section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  margin: 0 0 calc(var(--step) * 3);
  padding-bottom: calc(var(--step) * 1.5);
  border-bottom: 1px dashed var(--line);
}

.page-contact .section-head h2 {
  margin: 0;
  font-size: clamp(20px, 2.6vw, 26px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-contact .section-head .index-num {
  color: var(--muted);
}

/* ---------- 双渠道卡 ---------- */

.page-contact .contact-channels__grid {
  display: grid;
  gap: calc(var(--step) * 2);
}

@media (min-width: 760px) {
  .page-contact .contact-channels__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-contact .channel-card {
  position: relative;
  display: grid;
  gap: calc(var(--step) * 1.5);
  align-content: start;
  min-width: 0;
  padding: calc(var(--step) * 3.5) var(--card-pad) var(--card-pad);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  transition: transform 0.18s var(--ease), box-shadow 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  border-radius: var(--radius-card) var(--radius-card) 0 0;
  background: var(--line);
}

.page-contact .channel-card--mail::before {
  background: var(--orange);
}

.page-contact .channel-card--phone::before {
  background: var(--cyan);
}

.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within {
  transform: translateY(-3px);
  box-shadow: var(--shadow-float);
  border-color: #3f6e60;
}

.page-contact .channel-card__index {
  color: var(--muted);
}

.page-contact .channel-card__title {
  margin: 0;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-contact .channel-card__value {
  display: inline-block;
  width: fit-content;
  max-width: 100%;
  padding-bottom: 3px;
  font-family: var(--font-mono);
  font-size: clamp(17px, 2.4vw, 21px);
  letter-spacing: 0.01em;
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan);
  word-break: break-all;
  transition: color 0.18s var(--ease);
}

.page-contact .channel-card__value:hover,
.page-contact .channel-card__value:focus-visible {
  color: var(--cyan);
}

.page-contact .channel-card__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--muted);
}

.page-contact .channel-card__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 7px;
  font-size: 15px;
  line-height: 1.65;
  color: var(--muted);
}

.page-contact .channel-card__list li {
  position: relative;
  padding-left: 18px;
}

.page-contact .channel-card__list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.74em;
  width: 8px;
  height: 1px;
  background: var(--cyan);
}

.page-contact .channel-card__meta {
  margin: 0;
  padding-top: calc(var(--step) * 1);
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-contact .contact-channels__note {
  margin: calc(var(--step) * 2.5) 0 0;
  padding: calc(var(--step) * 2) calc(var(--step) * 2.5);
  border-left: 2px solid var(--orange);
  border-radius: 0 10px 10px 0;
  background: linear-gradient(90deg, rgba(255, 106, 26, 0.1), rgba(255, 106, 26, 0) 78%);
  font-size: 15px;
  line-height: 1.72;
  color: var(--text);
}

.page-contact .contact-channels__note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(33, 230, 193, 0.45);
}

.page-contact .contact-channels__note a:hover,
.page-contact .contact-channels__note a:focus-visible {
  border-bottom-color: var(--cyan);
}

/* ---------- 写信清单 ---------- */

.page-contact .contact-brief__grid {
  display: grid;
  gap: calc(var(--step) * 3);
  align-items: start;
}

.page-contact .contact-brief__intro {
  display: grid;
  gap: calc(var(--step) * 2);
  align-content: start;
}

.page-contact .contact-brief__intro .prose {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

.page-contact .contact-brief__link {
  display: inline-block;
  width: fit-content;
  font-size: 14px;
  font-weight: 600;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(33, 230, 193, 0.4);
  transition: border-color 0.18s var(--ease);
}

.page-contact .contact-brief__link:hover,
.page-contact .contact-brief__link:focus-visible {
  border-bottom-color: var(--cyan);
}

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

.page-contact .checklist__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 14px 16px;
  background: rgba(16, 36, 31, 0.55);
  border: 1px solid var(--line);
  border-radius: 10px;
  cursor: pointer;
  transition: border-color 0.18s var(--ease), background 0.18s var(--ease);
}

.page-contact .checklist__item:hover {
  border-color: #3f6e60;
}

.page-contact .checklist__item:has(.checklist__box:checked) {
  border-color: var(--cyan);
  background: rgba(33, 230, 193, 0.08);
}

.page-contact .checklist__box {
  appearance: none;
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  margin: 2px 0 0;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: transparent;
  cursor: pointer;
  position: relative;
  flex: none;
  transition: background 0.15s var(--ease), border-color 0.15s var(--ease);
}

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

.page-contact .checklist__box:checked::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 2px;
  width: 6px;
  height: 11px;
  border-right: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  transform: rotate(42deg);
}

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

.page-contact .checklist__text {
  display: grid;
  gap: 3px;
  min-width: 0;
}

.page-contact .checklist__title {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text);
}

.page-contact .checklist__hint {
  font-size: 13px;
  line-height: 1.65;
  color: var(--muted);
}

@media (min-width: 900px) {
  .page-contact .contact-brief__grid {
    grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr);
    gap: calc(var(--step) * 5);
  }
}

/* ---------- 纠错与合作 ---------- */

.page-contact .contact-help__grid {
  display: grid;
  gap: calc(var(--step) * 2);
}

@media (min-width: 860px) {
  .page-contact .contact-help__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  }
}

.page-contact .panel {
  display: grid;
  gap: calc(var(--step) * 1.5);
  align-content: start;
  min-width: 0;
  padding: var(--card-pad);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
}

.page-contact .panel__index {
  color: var(--cyan);
}

.page-contact .panel__title {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.45;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-contact .panel p {
  margin: 0;
  font-size: 15px;
  line-height: 1.76;
  color: var(--muted);
}

.page-contact .panel a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(33, 230, 193, 0.4);
}

.page-contact .panel a:hover,
.page-contact .panel a:focus-visible {
  border-bottom-color: var(--cyan);
}

.page-contact .help-list {
  counter-reset: hl;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .help-list li {
  counter-increment: hl;
  position: relative;
  padding-left: 30px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .help-list li::before {
  content: counter(hl, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.12em;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

/* ---------- 地址 ---------- */

.page-contact .address-block {
  position: relative;
  display: flex;
  align-items: flex-end;
  min-height: 260px;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  overflow: hidden;
  background: var(--night);
}

.page-contact .address-block__media {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(0.35) brightness(0.6);
}

.page-contact .address-block::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(105deg, rgba(6, 19, 16, 0.95) 10%, rgba(11, 27, 43, 0.82) 55%, rgba(11, 27, 43, 0.42) 100%);
  pointer-events: none;
}

.page-contact .address-block__inner {
  position: relative;
  z-index: 2;
  display: grid;
  gap: 10px;
  max-width: 34em;
  padding: calc(var(--step) * 4) var(--card-pad);
}

.page-contact .address-block__line {
  margin: 0;
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-contact .address-block__note {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--muted);
}

.page-contact .address-block__meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

/* ---------- 备案信息 ---------- */

.page-contact .record-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
}

.page-contact .record-card {
  display: grid;
  gap: 6px;
  min-width: 0;
  padding: 14px 16px;
  background: rgba(11, 27, 43, 0.62);
  border: 1px solid var(--line);
  border-radius: 10px;
}

.page-contact .record-card .index-num {
  color: var(--muted);
}

.page-contact .record-card strong {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text);
  word-break: break-all;
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .channel-card__value,
  .page-contact .checklist__item,
  .page-contact .checklist__box,
  .page-contact .breadcrumbs a,
  .page-contact .contact-brief__link {
    transition: none;
  }

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