.page-contact {
  --pc-pad: 20px;
  padding-bottom: 72px;
}

/* ---------- 面包屑 ---------- */
.page-contact .crumbs {
  margin-top: 22px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

/* ---------- 首屏：左右分流 ---------- */
.page-contact .contact-hero {
  display: grid;
  gap: 26px;
  margin-top: 22px;
}

.page-contact .hero-main {
  min-width: 0;
}

.page-contact .hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--flame);
}

.page-contact .hero-eyebrow::after {
  content: "";
  flex: 1 1 auto;
  height: 1px;
  background: var(--line);
}

.page-contact h1 {
  margin: 16px 0 0;
  font-family: var(--font-head);
  font-size: clamp(30px, 7.6vw, 52px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-contact .hero-lede {
  margin: 18px 0 0;
  max-width: 48ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--muted);
}

.page-contact .hero-time {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 18px 0 0;
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.07em;
  color: var(--muted);
}

.page-contact .hero-time::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--flame);
  box-shadow: 0 0 0 3px rgba(255, 75, 31, 0.18);
}

/* ---------- 通道卡 ---------- */
.page-contact .channel-stack {
  display: grid;
  gap: 12px;
  margin-top: 30px;
}

.page-contact .channel {
  position: relative;
  padding: 18px 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r);
  color: inherit;
  text-decoration: none;
  transition: border-color 180ms var(--ease), background 180ms var(--ease), transform 180ms var(--ease);
}

.page-contact .channel--mail { border-left: 3px solid var(--flame); }
.page-contact .channel--tel { border-left: 3px solid var(--blue); }

.page-contact .channel:hover,
.page-contact .channel:focus-visible {
  background: var(--raise);
  border-color: var(--flame);
}

.page-contact a.channel:hover {
  transform: translateY(-2px);
}

.page-contact .channel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.page-contact .channel-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-contact .channel-value {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(15px, 4vw, 21px);
  font-weight: 500;
  letter-spacing: 0.01em;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.page-contact .channel--mail .channel-value { color: var(--flame-2); }
.page-contact .channel--tel .channel-value { color: var(--blue-soft); }

.page-contact .channel-desc {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

.page-contact .copy-mail {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  padding: 7px 13px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--r);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--text);
  cursor: pointer;
  transition: border-color 180ms var(--ease), color 180ms var(--ease), background 180ms var(--ease);
}

.page-contact .copy-mail:hover,
.page-contact .copy-mail:focus-visible {
  border-color: var(--flame);
  color: var(--flame-2);
}

.page-contact .copy-mail.is-copied {
  border-color: var(--blue);
  background: var(--blue-panel);
  color: var(--blue-soft);
}

/* ---------- 首屏右栏 ---------- */
.page-contact .hero-side {
  display: grid;
  gap: 16px;
  align-content: start;
  min-width: 0;
}

.page-contact .signal-media {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r);
  background:
    radial-gradient(circle at 50% 55%, rgba(47, 168, 255, 0.16), transparent 62%),
    repeating-linear-gradient(90deg, rgba(58, 74, 66, 0.34) 0 1px, transparent 1px 34px),
    var(--panel);
}

.page-contact .signal-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 5 / 3;
  object-fit: cover;
  opacity: 0.84;
}

.page-contact .signal-cap {
  position: absolute;
  left: 14px;
  bottom: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--blue-soft);
}

.page-contact .prep-card {
  padding: 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r);
  box-shadow: var(--shadow);
}

.page-contact .prep-title {
  margin: 0;
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-contact .prep-hint {
  margin: 9px 0 0;
  font-size: 13px;
  line-height: 1.68;
  color: var(--muted);
}

.page-contact .prep-list {
  display: grid;
  gap: 12px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .prep-item {
  display: grid;
  grid-template-columns: 16px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
}

.page-contact .prep-check {
  appearance: none;
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  margin: 3px 0 0;
  background: var(--ink);
  border: 1px solid var(--line);
  border-radius: 1px;
  cursor: pointer;
  transition: background 180ms var(--ease), border-color 180ms var(--ease), box-shadow 180ms var(--ease);
}

.page-contact .prep-check:hover { border-color: var(--blue); }

.page-contact .prep-check:focus-visible {
  outline: 1px solid var(--blue-soft);
  outline-offset: 2px;
}

.page-contact .prep-check:checked {
  background: var(--blue);
  border-color: var(--blue);
  box-shadow: inset 0 0 0 3px var(--ink);
}

.page-contact .prep-label {
  display: flex;
  gap: 9px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text);
  cursor: pointer;
  transition: color 180ms var(--ease);
}

.page-contact .prep-num {
  flex: 0 0 auto;
  padding-top: 1px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--blue-soft);
  transition: color 180ms var(--ease);
}

.page-contact .prep-check:checked + .prep-label { color: var(--muted); }
.page-contact .prep-check:checked + .prep-label .prep-num { color: var(--line); }

/* ---------- 章节通用 ---------- */
.page-contact .flow {
  margin-top: 56px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.page-contact .sec-head {
  display: grid;
  gap: 10px;
}

.page-contact .sec-kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--flame);
}

.page-contact .sec-title {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(22px, 4.6vw, 30px);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-contact .sec-lede {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 四类问题分流 ---------- */
.page-contact .type-tabs {
  display: flex;
  gap: 8px;
  margin-top: 20px;
  padding-bottom: 6px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-contact .type-tab {
  flex: 0 0 auto;
  padding: 9px 15px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 13.5px;
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 180ms var(--ease), color 180ms var(--ease), background 180ms var(--ease);
}

.page-contact .type-tab:hover,
.page-contact .type-tab:focus-visible {
  border-color: var(--blue);
  background: var(--blue-panel);
  color: var(--text);
}

.page-contact .tab-num {
  margin-right: 7px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--blue-soft);
}

.page-contact .type-grid {
  display: grid;
  gap: 14px;
  margin-top: 22px;
}

.page-contact .type-card {
  position: relative;
  min-width: 0;
  padding: 22px 20px 22px 24px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r);
  scroll-margin-top: 24px;
  transition: border-color 180ms var(--ease);
}

.page-contact .type-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 22px;
  width: 3px;
  height: 28px;
  background: var(--blue);
  opacity: 0.9;
}

.page-contact .type-card:hover {
  border-color: rgba(47, 168, 255, 0.55);
}

.page-contact .type-top {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.page-contact .type-idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--blue-soft);
}

.page-contact .type-name {
  margin: 0;
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-contact .type-desc {
  margin: 11px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .need-label {
  margin: 17px 0 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--flame);
}

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

.page-contact .need-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.66;
  color: var(--text);
}

.page-contact .need-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 5px;
  height: 5px;
  border: 1px solid var(--blue);
}

.page-contact .type-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 17px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--blue-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-contact .type-link::after {
  content: "→";
}

.page-contact .type-link:hover,
.page-contact .type-link:focus-visible {
  color: var(--flame-2);
  border-bottom-color: var(--flame-2);
}

/* ---------- 通信地址与备案 ---------- */
.page-contact .addr-band {
  position: relative;
  margin-top: 56px;
  overflow: hidden;
  background: var(--blue-panel);
  border: 1px solid var(--line);
  border-radius: var(--r);
}

.page-contact .addr-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.page-contact .addr-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.16;
}

.page-contact .addr-inner {
  position: relative;
  display: grid;
  gap: 22px;
  padding: 26px 20px;
}

.page-contact .addr-intro { min-width: 0; }

.page-contact .addr-note {
  margin: 12px 0 0;
  max-width: 42ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .addr-list {
  display: grid;
  gap: 0;
  margin: 0;
  min-width: 0;
}

.page-contact .addr-row {
  display: grid;
  gap: 4px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(58, 74, 66, 0.72);
}

.page-contact .addr-row:first-child { padding-top: 0; }
.page-contact .addr-row:last-child { border-bottom: 0; padding-bottom: 0; }

.page-contact .addr-key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--blue-soft);
}

.page-contact .addr-val {
  margin: 0;
  font-size: 15px;
  line-height: 1.62;
  color: var(--text);
  overflow-wrap: anywhere;
}

.page-contact .addr-val--mono {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.02em;
}

/* ---------- 相关页面 ---------- */
.page-contact .ref-grid {
  display: grid;
  gap: 12px;
  margin-top: 22px;
}

.page-contact .ref-card {
  display: block;
  padding: 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r);
  color: inherit;
  text-decoration: none;
  transition: border-color 180ms var(--ease), transform 180ms var(--ease);
}

.page-contact .ref-card:hover,
.page-contact .ref-card:focus-visible {
  border-color: var(--flame);
  transform: translateY(-2px);
}

.page-contact .ref-title {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin: 0;
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-contact .ref-title::after {
  content: "→";
  font-family: var(--font-mono);
  font-weight: 400;
  color: var(--flame);
}

.page-contact .ref-desc {
  margin: 9px 0 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--muted);
}

/* ---------- 响应式 ---------- */
@media (min-width: 600px) {
  .page-contact .channel-stack {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
  }
  .page-contact .addr-row {
    grid-template-columns: 148px minmax(0, 1fr);
    align-items: baseline;
    gap: 14px;
  }
}

@media (min-width: 860px) {
  .page-contact .addr-inner {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    gap: 38px;
    align-items: start;
    padding: 36px 34px;
  }
  .page-contact .ref-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
}

@media (min-width: 980px) {
  .page-contact .contact-hero {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: 48px;
    align-items: start;
    margin-top: 32px;
  }
  .page-contact .hero-side {
    position: sticky;
    top: 20px;
  }
  .page-contact .channel-stack {
    grid-template-columns: minmax(0, 1fr);
    margin-top: 36px;
  }
  .page-contact .type-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }
  .page-contact .flow {
    margin-top: 72px;
    padding-top: 34px;
  }
  .page-contact .addr-band {
    margin-top: 72px;
  }
}

@media (min-width: 1200px) {
  .page-contact .type-card {
    padding: 26px 26px 26px 28px;
  }
  .page-contact .type-tabs {
    margin-top: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact *,
  .page-contact *::before,
  .page-contact *::after {
    transition: none !important;
    animation: none !important;
  }
}