.page-contact {
  position: relative;
  background:
    radial-gradient(88% 52% at 78% -6%, rgba(38, 224, 214, 0.11), transparent 62%),
    radial-gradient(72% 46% at 4% 24%, rgba(255, 107, 44, 0.07), transparent 62%),
    var(--night);
  color: var(--snow);
  font-family: var(--font-body);
  padding-bottom: clamp(40px, 6vw, 80px);
  overflow-x: hidden;
}

.page-contact::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: min(780px, 94vh);
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(46, 58, 77, 0.5) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(46, 58, 77, 0.5) 1px, transparent 1px);
  background-size: 80px 80px;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, rgba(0, 0, 0, 0.14) 70%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 0%, rgba(0, 0, 0, 0.14) 70%, transparent 100%);
  opacity: 0.55;
}

.page-contact > * {
  position: relative;
  z-index: 1;
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  padding-top: clamp(14px, 3vw, 30px);
}

.page-contact .contact-kicker {
  margin: 0 0 14px;
  font-size: 0.74rem;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.page-contact .contact-title {
  margin: 0;
  max-width: 22ch;
  font-size: clamp(1.86rem, 5.4vw, 3.3rem);
  line-height: 1.14;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--snow);
}

.page-contact .contact-lede {
  margin: 20px 0 0;
  max-width: min(100%, 620px);
  font-size: clamp(0.96rem, 1.7vw, 1.08rem);
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .contact-quick {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  color: var(--sand);
}

.page-contact .contact-quick li {
  position: relative;
  padding-left: 15px;
}

.page-contact .contact-quick li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 6px;
  height: 6px;
  background: var(--cyan);
  transform: rotate(45deg);
}

.page-contact .contact-hero-media {
  position: relative;
  margin: clamp(24px, 4vw, 42px) 0 0;
  border: 1px solid var(--line);
  background: var(--slate);
  overflow: hidden;
}

.page-contact .contact-hero-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.8) contrast(1.06) brightness(0.92);
}

.page-contact .contact-hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(38, 224, 214, 0.1) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(38, 224, 214, 0.1) 1px, transparent 1px);
  background-size: 64px 64px;
  mix-blend-mode: screen;
}

/* ---------- 主体双栏 ---------- */

.page-contact .contact-body {
  padding-block: clamp(34px, 6vw, 72px) 0;
}

.page-contact .contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 5vw, 46px);
  align-items: start;
}

/* ---------- 左侧通道栏 ---------- */

.page-contact .contact-rail {
  display: grid;
  gap: 14px;
}

.page-contact .rail-title {
  margin: 0 0 2px;
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  color: var(--mist);
}

.page-contact .channel {
  position: relative;
  padding: 20px 20px 22px;
  background: linear-gradient(158deg, var(--slate) 0%, rgba(19, 28, 43, 0.7) 100%);
  border-left: 2px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
  transition: border-left-color 0.25s ease, transform 0.25s ease;
}

.page-contact .channel:hover {
  border-left-color: var(--cyan);
  transform: translateX(2px);
}

.page-contact .channel-num {
  display: block;
  margin-bottom: 8px;
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--sand);
}

.page-contact .channel-name {
  margin: 0 0 8px;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--snow);
}

.page-contact .channel-desc {
  margin: 0;
  font-size: 0.87rem;
  line-height: 1.74;
  color: var(--mist);
  overflow-wrap: anywhere;
}

.page-contact .channel-link {
  display: inline-block;
  margin-top: 12px;
  font-size: 0.76rem;
  letter-spacing: 0.05em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(38, 224, 214, 0.42);
  transition: color 0.2s ease, border-color 0.2s ease;
}

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

.page-contact .rail-status {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 2px 0 0;
  padding: 13px 15px;
  border: 1px dashed var(--line);
  font-size: 0.76rem;
  line-height: 1.6;
  color: var(--mist);
}

.page-contact .rail-dot {
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  animation: contact-pulse 2.6s ease-out infinite;
}

@keyframes contact-pulse {
  0% { box-shadow: 0 0 0 0 rgba(38, 224, 214, 0.5); }
  100% { box-shadow: 0 0 0 13px rgba(38, 224, 214, 0); }
}

/* ---------- 右侧内容区 ---------- */

.page-contact .contact-main {
  display: grid;
  gap: clamp(34px, 5vw, 58px);
  min-width: 0;
}

.page-contact .c-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.page-contact .c-num {
  flex: none;
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-contact .c-title {
  margin: 0;
  font-size: clamp(1.18rem, 2.8vw, 1.6rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--snow);
}

.page-contact .c-lede {
  margin: 0 0 22px;
  max-width: 36rem;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .c-tail {
  margin: 20px 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--moss);
  font-size: 0.87rem;
  line-height: 1.78;
  color: var(--mist);
}

/* ---- 准备清单 ---- */

.page-contact .prep-list {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .prep-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 14px;
  padding: 18px 18px 20px;
  background: var(--night);
}

.page-contact .prep-num {
  padding-top: 4px;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--sand);
}

.page-contact .prep-title {
  margin: 0;
  font-size: 0.99rem;
  font-weight: 700;
  color: var(--snow);
}

.page-contact .prep-text {
  grid-column: 2;
  margin: 0;
  font-size: 0.87rem;
  line-height: 1.76;
  color: var(--mist);
}

/* ---- 响应时间轴 ---- */

.page-contact .contact-timeline-media {
  position: relative;
  margin: 0 0 28px;
  border: 1px solid var(--line);
  background: var(--slate);
  overflow: hidden;
}

.page-contact .contact-timeline-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.82) contrast(1.05) brightness(0.92);
}

.page-contact .timeline {
  position: relative;
  display: grid;
  gap: 20px;
  margin: 0;
  padding: 0 0 0 24px;
  list-style: none;
}

.page-contact .timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: linear-gradient(to bottom, var(--cyan), rgba(38, 224, 214, 0.12));
}

.page-contact .tl-item {
  position: relative;
}

.page-contact .tl-item::before {
  content: "";
  position: absolute;
  left: -24px;
  top: 6px;
  width: 11px;
  height: 11px;
  background: var(--night);
  border: 2px solid var(--cyan);
  transform: rotate(45deg);
}

.page-contact .tl-time {
  display: block;
  margin-bottom: 5px;
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  color: var(--sand);
}

.page-contact .tl-text {
  margin: 0;
  font-size: 0.87rem;
  line-height: 1.76;
  color: var(--mist);
}

/* ---- 服务时段面板 ---- */

.page-contact .panel-wrap {
  margin-top: 28px;
}

.page-contact .panel-toggle {
  width: 100%;
  margin: 0;
  padding: 14px 18px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--cyan);
  background: rgba(19, 28, 43, 0.6);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color 0.22s ease, color 0.22s ease, background 0.22s ease;
}

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

.page-contact .panel-toggle[aria-expanded="true"] {
  color: var(--orange);
  border-color: rgba(255, 107, 44, 0.5);
}

/* ---- 合作方向 ---- */

.page-contact .coop-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-contact .coop-card {
  padding: 20px 20px 22px;
  background: var(--slate);
  border-top: 2px solid var(--line);
}

.page-contact .coop-card--moss { border-top-color: var(--moss); }
.page-contact .coop-card--clay { border-top-color: var(--clay); }
.page-contact .coop-card--cyan { border-top-color: var(--cyan); }

.page-contact .coop-title {
  margin: 0 0 10px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--snow);
}

.page-contact .coop-text {
  margin: 0;
  font-size: 0.87rem;
  line-height: 1.78;
  color: var(--mist);
}

/* ---- 到访信息 ---- */

.page-contact .visit-card {
  padding: clamp(20px, 3vw, 30px);
  background:
    linear-gradient(135deg, rgba(216, 180, 106, 0.1), transparent 58%),
    var(--slate);
  border: 1px solid var(--line);
}

.page-contact .visit-addr {
  margin: 0 0 18px;
  padding-left: 16px;
  border-left: 3px solid var(--sand);
  font-size: clamp(1rem, 2.3vw, 1.2rem);
  font-weight: 700;
  line-height: 1.58;
  color: var(--snow);
}

.page-contact .visit-text {
  margin: 0 0 12px;
  max-width: 38rem;
  font-size: 0.88rem;
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .visit-text:last-child {
  margin-bottom: 0;
}

/* ---------- 底部信息条 ---------- */

.page-contact .contact-footline {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 26px;
  margin-top: clamp(38px, 6vw, 68px);
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .contact-footline::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 132px;
  height: 1px;
  background: var(--cyan);
}

.page-contact .contact-footline span {
  overflow-wrap: anywhere;
}

.page-contact .contact-note {
  margin: 14px 0 0;
  max-width: 62ch;
  font-size: 0.75rem;
  line-height: 1.72;
  color: var(--mist);
}

/* ---------- 响应式 ---------- */

@media (min-width: 700px) {
  .page-contact .coop-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .coop-card:last-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 760px) {
  .page-contact .timeline {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 22px;
    padding: 30px 0 0;
  }

  .page-contact .timeline::before {
    left: 0;
    right: 0;
    top: 7px;
    bottom: auto;
    width: auto;
    height: 1px;
    background: linear-gradient(to right, var(--cyan), rgba(38, 224, 214, 0.12));
  }

  .page-contact .tl-item::before {
    left: 0;
    top: -28px;
  }

  .page-contact .prep-item {
    padding: 20px 22px 22px;
  }
}

@media (min-width: 960px) {
  .page-contact .contact-layout {
    grid-template-columns: minmax(268px, 320px) minmax(0, 1fr);
    gap: clamp(34px, 4vw, 64px);
  }

  .page-contact .contact-rail {
    position: sticky;
    top: calc(var(--header-h) + 22px);
  }

  .page-contact .contact-body {
    padding-block: clamp(44px, 5vw, 78px) 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel,
  .page-contact .channel-link,
  .page-contact .panel-toggle {
    transition: none;
  }

  .page-contact .channel:hover {
    transform: none;
  }

  .page-contact .rail-dot {
    animation: none;
  }
}