.page-contact {
  --c-gap: clamp(16px, 2.2vw, 28px);
  --c-pad: clamp(16px, 2vw, 24px);
  background: var(--paper);
  color: var(--charcoal);
  overflow-x: clip;
}

/* ---------- 页头 ---------- */
.page-contact .page-head--contact {
  padding-top: clamp(26px, 4.4vw, 58px);
  padding-bottom: clamp(20px, 3vw, 36px);
  border-bottom: var(--rule) solid var(--charcoal);
}

.page-contact .breadcrumb {
  margin-bottom: clamp(20px, 3vw, 38px);
}

.page-contact .page-head__index {
  color: var(--silver-ink);
  font-family: var(--font-mono);
}

.page-contact .page-head__title {
  font-family: var(--font-serif);
  font-weight: 300;
  font-size: clamp(30px, 6vw, 64px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  margin: 14px 0 0;
  max-width: 22ch;
}

.page-contact .page-head__lead {
  margin: 20px 0 0;
  max-width: 60ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.8;
  color: var(--silver-ink);
}

.page-contact .page-head__meta {
  margin: 24px 0 0;
  gap: 10px;
}

.page-contact .page-head__meta .mono {
  font-size: 12px;
  letter-spacing: 0.04em;
  word-break: break-all;
}

/* ---------- 章节节奏 ---------- */
.page-contact .section {
  padding-block: clamp(34px, 5vw, 74px);
}

.page-contact .section__note {
  max-width: 56ch;
}

/* ---------- 控制台式面板 ---------- */
.page-contact .console {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--c-gap);
}

.page-contact .console__list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--c-gap);
  align-content: start;
}

.page-contact .chan {
  border: var(--rule) solid var(--charcoal);
  border-left: 6px solid var(--apricot);
  background: var(--paper-light);
  padding: var(--c-pad);
  box-shadow: var(--shadow-hard);
  transition: transform var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease),
    border-left-color var(--dur) var(--ease);
}

.page-contact .chan:hover,
.page-contact .chan:focus-within {
  transform: translate(-2px, -2px);
  box-shadow: 8px 8px 0 var(--charcoal);
  border-left-color: var(--amber);
}

.page-contact .chan__no {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--silver-ink);
  margin: 0;
}

.page-contact .chan__title {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: 0.01em;
  margin: 10px 0 0;
}

.page-contact .chan__val {
  margin: 10px 0 0;
  padding-bottom: 12px;
  font-size: clamp(15px, 1.6vw, 19px);
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: var(--ink);
  word-break: break-word;
  border-bottom: 1px dashed var(--silver-line);
}

.page-contact .chan__use {
  margin: 14px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
}

.page-contact .chan__note {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--silver-ink);
}

.page-contact .console__panel {
  border: var(--rule) solid var(--charcoal);
  background: var(--ink);
  color: var(--paper);
  padding: var(--c-pad);
}

.page-contact .console__panel-head {
  color: var(--apricot);
  font-family: var(--font-mono);
  margin: 0 0 6px;
}

.page-contact .console__panel .panel__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 5px;
  padding: 13px 0;
  border-bottom: 1px solid rgba(244, 241, 234, 0.18);
}

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

.page-contact .console__panel .panel__key {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--silver);
}

.page-contact .console__panel .panel__val {
  font-size: 14px;
  line-height: 1.65;
  color: var(--paper);
}

/* ---------- 用途边界 ---------- */
.page-contact .bound {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--c-gap);
}

.page-contact .bound__col {
  border-top: 3px solid var(--moss);
  background: var(--paper-light);
  padding: 18px 20px 22px;
}

.page-contact .bound__col--off {
  border-top-color: var(--check);
  border-right: var(--rule) solid var(--silver-line);
  border-bottom: var(--rule) solid var(--silver-line);
  border-left: var(--rule) solid var(--silver-line);
  background: transparent;
}

.page-contact .bound__title {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 15.5px;
  letter-spacing: 0.02em;
  margin: 0;
}

.page-contact .bound__list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .bound__list li {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  gap: 6px;
  font-size: 14.5px;
  line-height: 1.7;
}

.page-contact .bound__list li::before {
  content: "—";
  color: var(--silver);
}

.page-contact .bound__hint {
  margin: var(--c-gap) 0 0;
  border: var(--rule) solid var(--charcoal);
  background: var(--apricot-light);
  color: var(--charcoal);
  padding: 16px 18px;
  font-size: 14px;
  line-height: 1.75;
}

.page-contact .bound__hint a {
  color: var(--amber-deep);
}

/* ---------- 场景准备清单 ---------- */
.page-contact .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: var(--c-gap);
}

.page-contact .filter-chip {
  font-family: var(--font-sans);
  font-size: 13px;
  letter-spacing: 0.04em;
  padding: 8px 15px;
  background: transparent;
  color: var(--charcoal);
  border: var(--rule) solid var(--silver-line);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color var(--dur) var(--ease),
    background-color var(--dur) var(--ease),
    color var(--dur) var(--ease);
}

.page-contact .filter-chip:hover {
  border-color: var(--amber);
}

.page-contact .filter-chip[aria-pressed="true"] {
  background: var(--charcoal);
  color: var(--paper);
  border-color: var(--charcoal);
}

.page-contact .filter-chip:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

.page-contact .prep {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--c-gap);
}

.page-contact .prep__item {
  display: flex;
  flex-direction: column;
  border: var(--rule) solid var(--charcoal);
  background: var(--paper-light);
  padding: var(--c-pad);
  box-shadow: var(--shadow-hard);
  transition: transform var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}

.page-contact .prep__item:hover {
  transform: translate(-2px, -2px);
  box-shadow: 8px 8px 0 var(--amber);
}

.page-contact .prep__item.is-hidden {
  display: none;
}

.page-contact .prep__no {
  display: inline-block;
  align-self: flex-start;
  font-size: 12px;
  letter-spacing: 0.1em;
  padding: 4px 10px;
  background: var(--ink);
  color: var(--apricot);
  border-radius: var(--radius);
  margin: 0;
}

.page-contact .prep__title {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 16px;
  margin: 14px 0 0;
}

.page-contact .prep__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-contact .prep__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
}

.page-contact .prep__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 9px;
  height: 2px;
  background: var(--apricot);
}

.page-contact .prep__why {
  margin: auto 0 0;
  padding-top: 15px;
  margin-top: 18px;
  border-top: 1px solid var(--silver-line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--silver-ink);
}

.page-contact .prep__media {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  margin: 0;
  border: var(--rule) solid var(--charcoal);
  background: var(--paper-light);
  box-shadow: var(--shadow-hard);
}

.page-contact .prep__media .media__frame {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--silver-line);
}

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

.page-contact .prep__media .media__caption {
  padding: 14px 18px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--silver-ink);
}

/* ---------- 自检清单 ---------- */
.page-contact .checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--rule) solid var(--charcoal);
}

.page-contact .checklist__item {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 10px;
  padding: 18px 10px 18px 0;
  border-bottom: var(--rule) solid var(--silver-line);
  transition: background-color var(--dur) var(--ease);
}

.page-contact .checklist__item:hover {
  background: rgba(246, 228, 188, 0.45);
}

.page-contact .checklist__no {
  font-size: 15px;
  letter-spacing: 0.06em;
  color: var(--amber-deep);
  padding-top: 2px;
}

.page-contact .checklist__title {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 15.5px;
  margin: 0;
}

.page-contact .checklist__text {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--silver-ink);
}

.page-contact .checklist__foot {
  margin: 22px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--silver-ink);
}

.page-contact .checklist__foot a {
  color: var(--amber-deep);
}

/* ---------- 属地与备案 ---------- */
.page-contact .contact-region {
  background: var(--charcoal);
  color: var(--paper);
  padding-block: clamp(36px, 5.5vw, 78px);
  border-top: var(--rule) solid var(--charcoal);
}

.page-contact .region {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3vw, 44px);
  align-items: center;
}

.page-contact .region__index {
  color: var(--apricot);
  font-family: var(--font-mono);
  margin: 0;
}

.page-contact .region__title {
  font-family: var(--font-serif);
  font-weight: 300;
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  margin: 14px 0 0;
  color: var(--paper);
}

.page-contact .region__text {
  margin: 18px 0 0;
  max-width: 56ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(244, 241, 234, 0.78);
}

.page-contact .region__facts {
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-contact .region__fact {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 12px 0;
  border-top: 1px solid rgba(244, 241, 234, 0.18);
}

.page-contact .region__key {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--silver);
  margin: 0;
}

.page-contact .region__val {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--paper);
}

.page-contact .region__media {
  margin: 0;
  border: var(--rule) solid var(--silver-line);
  background: #0F0E0D;
}

.page-contact .region__media .media__frame {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #0F0E0D;
}

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

.page-contact .region__media .media__caption {
  padding: 11px 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--silver);
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-contact .prep__media {
    grid-template-columns: minmax(0, 280px) minmax(0, 1fr);
    align-items: stretch;
  }

  .page-contact .prep__media .media__frame {
    aspect-ratio: 1 / 1;
    border-right: var(--rule) solid var(--charcoal);
  }

  .page-contact .prep__media .media__caption {
    display: flex;
    align-items: center;
    padding: 18px 20px;
    font-size: 13.5px;
  }

  .page-contact .console__panel .panel__row {
    grid-template-columns: minmax(0, 96px) minmax(0, 1fr);
    gap: 14px;
    align-items: baseline;
  }

  .page-contact .region__fact {
    grid-template-columns: minmax(0, 104px) minmax(0, 1fr);
    gap: 14px;
    align-items: baseline;
  }
}

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

  .page-contact .prep {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .checklist__item {
    grid-template-columns: 64px minmax(0, 1fr);
    gap: 18px;
    padding-right: 18px;
  }
}

@media (min-width: 980px) {
  .page-contact .console {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: start;
  }

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

  .page-contact .region {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
  }
}

@media (min-width: 1180px) {
  .page-contact .console__list {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .chan,
  .page-contact .prep__item,
  .page-contact .filter-chip,
  .page-contact .checklist__item {
    transition: none;
  }

  .page-contact .chan:hover,
  .page-contact .chan:focus-within,
  .page-contact .prep__item:hover {
    transform: none;
  }
}
</style>