.page-contact {
  --ct-panel: rgba(23, 42, 74, 0.68);
  --ct-panel-strong: rgba(23, 42, 74, 0.94);
  --ct-glow: rgba(45, 226, 230, 0.16);
  --ct-warm: rgba(255, 107, 53, 0.16);
}

/* ---------- 通用章节结构 ---------- */
.page-contact .section-head {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 2.25rem;
}

.page-contact .section-head .eyebrow {
  margin: 0;
}

.page-contact .section-head .section-title {
  margin: 0;
}

.page-contact .prose p {
  color: var(--steel);
  line-height: 1.8;
}

.page-contact .prose a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-cyan);
}

.page-contact .prose a:hover {
  color: var(--cyan-soft);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero .breadcrumb {
  margin-bottom: 1.75rem;
}

.page-contact .contact-hero-layout {
  display: grid;
  gap: 2.25rem;
  align-items: center;
}

.page-contact .contact-hero h1 {
  font-family: var(--font-head);
  font-size: clamp(1.9rem, 6vw, 3.4rem);
  line-height: 1.14;
  letter-spacing: 0.02em;
  color: var(--white);
  margin: 0.55rem 0 1rem;
  max-width: 20ch;
}

.page-contact .contact-hero .lead {
  max-width: 46ch;
  color: var(--steel);
}

.page-contact .contact-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.6rem;
}

.page-contact .contact-hero-figure {
  margin: 0;
}

.page-contact .contact-hero-figure .figure-media,
.page-contact .mail-figure .figure-media {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-xl);
  border: 1px solid var(--line-soft);
  background: linear-gradient(150deg, var(--ink-600), var(--ink-900));
  box-shadow: var(--shadow-card);
}

.page-contact .contact-hero-figure img,
.page-contact .mail-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-contact .contact-hero-figure .figure-caption,
.page-contact .mail-figure .figure-caption {
  margin-top: 0.75rem;
  font-size: 0.82rem;
  color: var(--steel);
  opacity: 0.82;
}

/* ---------- 联络板 ---------- */
.page-contact .board-grid {
  display: grid;
  gap: 1.25rem;
}

.page-contact .board-main,
.page-contact .board-side {
  display: grid;
  gap: 1.25rem;
  align-content: start;
}

.page-contact .channel-card {
  position: relative;
  padding: clamp(1.5rem, 4vw, 2.35rem);
  border-radius: var(--radius-xl);
  border: 1px solid var(--line-soft);
  background: linear-gradient(155deg, var(--ct-panel-strong), rgba(10, 20, 40, 0.86));
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: border-color 0.3s ease, transform 0.3s ease;
}

.page-contact .channel-card::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
}

.page-contact .channel-card--email::after {
  background: linear-gradient(180deg, var(--cyan), rgba(45, 226, 230, 0));
}

.page-contact .channel-card--phone::after {
  background: linear-gradient(180deg, var(--orange), rgba(255, 107, 53, 0));
}

.page-contact .channel-card:hover {
  border-color: var(--line-cyan);
  transform: translateY(-3px);
}

.page-contact .channel-tag {
  margin: 0 0 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-contact .channel-name {
  margin: 0 0 0.9rem;
  font-family: var(--font-head);
  font-size: clamp(1.05rem, 2.6vw, 1.35rem);
  line-height: 1.4;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-contact .channel-value {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: clamp(1.02rem, 3.6vw, 1.7rem);
  letter-spacing: 0.005em;
  color: var(--white);
  text-decoration: none;
  word-break: break-all;
  padding-bottom: 0.18em;
  border-bottom: 1px dashed var(--line-cyan);
  transition: color 0.22s ease, border-color 0.22s ease;
}

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

.page-contact .channel-desc {
  margin: 1rem 0 0;
  font-size: 0.94rem;
  line-height: 1.78;
  color: var(--steel);
}

.page-contact .channel-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-top: 1.35rem;
}

.page-contact .channel-hours {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: var(--steel);
  opacity: 0.85;
}

.page-contact .channel-foot .copy-btn {
  margin-left: auto;
}

/* ---------- 地址卡与点阵图 ---------- */
.page-contact .addr-card,
.page-contact .hours-card {
  padding: 1.5rem 1.4rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line-soft);
  background: linear-gradient(160deg, rgba(16, 30, 56, 0.82), rgba(5, 10, 24, 0.9));
}

.page-contact .addr-card .channel-name {
  font-size: clamp(1rem, 3vw, 1.18rem);
}

.page-contact .addr-map {
  position: relative;
  height: 158px;
  margin: 0.35rem 0 0.25rem;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--line-soft);
  background:
    radial-gradient(circle at 62% 44%, var(--ct-glow), transparent 60%),
    linear-gradient(150deg, var(--ink-700), var(--ink-900));
  cursor: default;
}

.page-contact .addr-map:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-contact .map-grid {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(215, 227, 244, 0.18) 1px, transparent 1.6px);
  background-size: 16px 16px;
  -webkit-mask-image: linear-gradient(140deg, #000 18%, transparent 88%);
  mask-image: linear-gradient(140deg, #000 18%, transparent 88%);
}

.page-contact .map-pin {
  position: absolute;
  left: 62%;
  top: 44%;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--orange);
  transform: translate(-50%, -50%);
  box-shadow: 0 0 0 6px var(--ct-warm), 0 0 22px rgba(255, 107, 53, 0.6);
  animation: page-contact-pin 2.8s ease-in-out infinite;
}

.page-contact .map-tip {
  position: absolute;
  left: 62%;
  top: 44%;
  transform: translate(-50%, -160%);
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  background: rgba(5, 10, 24, 0.94);
  border: 1px solid var(--line-cyan);
  color: var(--cyan-soft);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.02em;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.page-contact .addr-map:hover .map-tip,
.page-contact .addr-map:focus .map-tip,
.page-contact .addr-map:focus-visible .map-tip {
  opacity: 1;
  transform: translate(-50%, -185%);
}

/* ---------- 时段轴 ---------- */
.page-contact .hours-track {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.4rem;
  margin: 1.1rem 0 0.2rem;
  padding: 0;
  list-style: none;
}

.page-contact .hours-track li {
  position: relative;
  padding-top: 1.15rem;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--steel);
}

.page-contact .hours-track li::before {
  content: "";
  position: absolute;
  top: 4px;
  left: 0;
  right: 0;
  height: 2px;
  background: rgba(45, 226, 230, 0.22);
}

.page-contact .hours-track li:first-child::before {
  border-radius: 999px 0 0 999px;
}

.page-contact .hours-track li:last-child::before {
  border-radius: 0 999px 999px 0;
}

.page-contact .hours-track li::after {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  width: 9px;
  height: 9px;
  transform: translateX(-50%);
  border-radius: 50%;
}

.page-contact .hours-track li:nth-child(1)::after {
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(45, 226, 230, 0.14);
}

.page-contact .hours-track li:nth-child(2)::after {
  background: var(--cyan-soft);
  box-shadow: 0 0 0 3px rgba(156, 247, 242, 0.12);
}

.page-contact .hours-track li:nth-child(3)::after {
  background: var(--orange);
  box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.16);
}

/* ---------- 邮件说明 ---------- */
.page-contact .mail-layout {
  display: grid;
  gap: 2rem;
}

.page-contact .mail-subtitle {
  font-family: var(--font-head);
  font-size: clamp(1rem, 2.6vw, 1.18rem);
  letter-spacing: 0.03em;
  color: var(--white);
  margin: 1.8rem 0 0;
}

.page-contact .mail-topics {
  counter-reset: mail-topic;
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.8rem;
}

.page-contact .mail-topics li {
  position: relative;
  padding: 0.85rem 1rem 0.85rem 2.7rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--line-soft);
  background: rgba(16, 30, 56, 0.6);
  font-size: 0.93rem;
  line-height: 1.75;
  color: var(--steel);
}

.page-contact .mail-topics li::before {
  counter-increment: mail-topic;
  content: "0" counter(mail-topic);
  position: absolute;
  left: 0.9rem;
  top: 0.95rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--orange);
}

.page-contact .mail-topics b {
  color: var(--white);
  font-weight: 600;
}

.page-contact .mail-note {
  margin-top: 1.5rem;
  padding-left: 0.9rem;
  border-left: 2px solid var(--line-cyan);
  font-size: 0.88rem;
  color: var(--steel);
}

.page-contact .mail-figure {
  margin: 0;
}

/* ---------- 合作与反馈 ---------- */
.page-contact .collab-grid {
  display: grid;
  gap: 1.1rem;
}

.page-contact .collab-card {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1.55rem 1.4rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line-soft);
  background: linear-gradient(160deg, var(--ct-panel), rgba(10, 20, 40, 0.55));
  transition: transform 0.28s ease, border-color 0.28s ease, box-shadow 0.28s ease;
}

.page-contact .collab-card:hover {
  transform: translateY(-4px);
  border-color: var(--line-cyan);
  box-shadow: 0 20px 38px -28px rgba(45, 226, 230, 0.6);
}

.page-contact .collab-title {
  margin: 0;
  font-family: var(--font-head);
  font-size: 1.05rem;
  letter-spacing: 0.03em;
  color: var(--white);
}

.page-contact .collab-body {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.78;
  color: var(--steel);
}

.page-contact .collab-link {
  margin: auto 0 0;
  padding-top: 0.9rem;
  border-top: 1px solid var(--line-soft);
}

.page-contact .collab-link a {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  color: var(--cyan);
  text-decoration: none;
}

.page-contact .collab-link a:hover {
  color: var(--orange-soft);
}

/* ---------- 备案 ---------- */
.page-contact .filing-panel {
  position: relative;
  padding: clamp(1.6rem, 5vw, 2.8rem);
  border-radius: var(--radius-xl);
  border: 1px solid var(--line-soft);
  background:
    radial-gradient(circle at 88% 10%, var(--ct-warm), transparent 55%),
    radial-gradient(circle at 8% 92%, var(--ct-glow), transparent 60%),
    linear-gradient(140deg, rgba(16, 30, 56, 0.92), rgba(5, 10, 24, 0.94));
  overflow: hidden;
}

.page-contact .filing-panel .section-no {
  display: block;
  margin-bottom: 0.35rem;
}

.page-contact .filing-panel .eyebrow {
  margin: 0 0 0.4rem;
}

.page-contact .filing-panel .section-title {
  margin: 0 0 1.1rem;
}

.page-contact .filing-code {
  display: inline-block;
  margin: 0 0 1rem;
  padding: 0.5rem 0.95rem;
  border-radius: var(--radius-sm);
  border: 1px dashed rgba(255, 107, 53, 0.42);
  background: rgba(255, 107, 53, 0.08);
  font-family: var(--font-mono);
  font-size: clamp(0.95rem, 3vw, 1.25rem);
  letter-spacing: 0.05em;
  color: var(--orange-soft);
}

.page-contact .filing-body {
  max-width: 58ch;
  margin: 0 0 1.6rem;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--steel);
}

.page-contact .filing-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 0.7rem;
}

.page-contact .filing-links a {
  display: inline-block;
  padding: 0.42rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--line-soft);
  background: rgba(5, 10, 24, 0.5);
  font-size: 0.82rem;
  color: var(--steel);
  text-decoration: none;
  transition: color 0.22s ease, border-color 0.22s ease;
}

.page-contact .filing-links a:hover {
  color: var(--cyan);
  border-color: var(--line-cyan);
}

/* ---------- 动效 ---------- */
@keyframes page-contact-pin {
  0%, 100% {
    box-shadow: 0 0 0 6px rgba(255, 107, 53, 0.14), 0 0 20px rgba(255, 107, 53, 0.5);
  }
  50% {
    box-shadow: 0 0 0 11px rgba(255, 107, 53, 0.05), 0 0 30px rgba(255, 107, 53, 0.72);
  }
}

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

@media (min-width: 960px) {
  .page-contact .contact-hero-layout {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
    gap: 3.4rem;
  }

  .page-contact .mail-layout {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 3rem;
    align-items: start;
  }

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

@media (min-width: 1040px) {
  .page-contact .board-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 1.5rem;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .map-pin {
    animation: none;
  }

  .page-contact .channel-card,
  .page-contact .collab-card {
    transition: none;
  }
}
</main>