.page-contact {
  --cc-gap: clamp(16px, 3vw, 28px);
  --cc-card-w: 284px;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding: clamp(26px, 6vw, 60px) 0 clamp(20px, 4vw, 40px);
}

.page-contact .breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: clamp(18px, 4vw, 34px);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.page-contact .breadcrumb a {
  color: var(--cyan);
  text-decoration: none;
}

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

.page-contact .hero-grid {
  display: grid;
  gap: clamp(18px, 4vw, 36px);
}

.page-contact .eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--cyan);
}

.page-contact h1 {
  margin: 0;
  max-width: 18ch;
  font-size: clamp(34px, 7.4vw, 80px);
  line-height: 1.05;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--snow);
}

.page-contact .lede {
  margin: clamp(16px, 3vw, 24px) 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(18px, 3vw, 28px);
}

.page-contact .note-vertical {
  display: none;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--mist);
  writing-mode: vertical-rl;
  text-orientation: mixed;
}

.page-contact .hero-media-wrap {
  margin-top: clamp(24px, 5vw, 48px);
}

.page-contact .contact-hero-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line-soft);
}

.page-contact .contact-hero-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

/* ---------- 章节骨架 ---------- */
.page-contact .section {
  padding: clamp(40px, 7vw, 84px) 0;
}

.page-contact .section-band {
  height: 6px;
  border-radius: 999px;
  margin-bottom: clamp(22px, 4vw, 38px);
  background: linear-gradient(90deg, var(--cyan), var(--gold) 58%, var(--crimson));
  opacity: 0.9;
}

.page-contact .chapter {
  margin-bottom: clamp(22px, 4vw, 38px);
  max-width: 64ch;
}

.page-contact .chapter-no {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.26em;
  color: var(--gold);
}

.page-contact .chapter-title {
  margin: 0 0 12px;
  font-size: clamp(24px, 3.6vw, 38px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--snow);
}

.page-contact .section-sub {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .direct-copy a,
.page-contact .partner-copy a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px dashed var(--line);
}

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

/* ---------- 三通道 ---------- */
.page-contact .channel-rail {
  display: flex;
  gap: var(--cc-gap);
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x mandatory;
  padding: 6px 2px 18px;
  -webkit-overflow-scrolling: touch;
}

.page-contact .channel-card {
  position: relative;
  flex: 0 0 var(--cc-card-w);
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 28px 22px 22px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, var(--panel), rgba(11, 27, 43, 0.75));
  transition: border-color 0.18s ease, transform 0.18s ease;
}

.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within {
  border-color: var(--line);
  transform: translateY(-2px);
}

.page-contact .channel-bar {
  position: absolute;
  top: 0;
  left: 22px;
  right: 22px;
  height: 4px;
  border-radius: 999px;
}

.page-contact .channel-card--cyan .channel-bar { background: var(--cyan); }
.page-contact .channel-card--gold .channel-bar { background: var(--gold); }
.page-contact .channel-card--crimson .channel-bar { background: var(--crimson); }

.page-contact .channel-name {
  margin: 6px 0 0;
  font-size: 20px;
  font-weight: 600;
  color: var(--snow);
}

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

.page-contact .channel-value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--cyan-soft);
  word-break: break-all;
}

.page-contact .channel-card--gold .channel-value { color: var(--gold); }
.page-contact .channel-card--crimson .channel-value { color: var(--snow); }

.page-contact .channel-tips {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
}

.page-contact .channel-tips summary {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  list-style: none;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--cyan-soft);
}

.page-contact .channel-tips summary::-webkit-details-marker { display: none; }

.page-contact .channel-tips summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--mist);
}

.page-contact .channel-tips[open] summary::after { content: "–"; }

.page-contact .channel-tips ul {
  margin: 12px 0 0;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .channel-tips li { margin-bottom: 6px; }

/* ---------- 邮箱与电话 ---------- */
.page-contact .direct-grid {
  display: grid;
  gap: var(--cc-gap);
}

.page-contact .direct-copy p {
  margin: 0 0 16px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .direct-copy p:last-child { margin-bottom: 0; }

.page-contact .direct-panel {
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, var(--glow), rgba(11, 27, 43, 0.55));
}

.page-contact .direct-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 0;
  border-bottom: 1px dashed var(--line-soft);
}

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

.page-contact .direct-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--mist);
}

.page-contact .direct-value {
  font-family: var(--font-mono);
  font-size: clamp(15px, 2.3vw, 19px);
  font-weight: 600;
  color: var(--snow);
  word-break: break-all;
}

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

/* ---------- 编号步骤 ---------- */
.page-contact .steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .steps > li {
  position: relative;
  padding: 0 0 28px 64px;
}

.page-contact .steps > li::before {
  content: "";
  position: absolute;
  left: 32px;
  top: 32px;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, var(--line), transparent);
}

.page-contact .steps > li:last-child { padding-bottom: 0; }
.page-contact .steps > li:last-child::before { display: none; }

.page-contact .step-no {
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 600;
  line-height: 1.2;
  color: var(--gold);
}

.page-contact .steps--flow .step-no { color: var(--cyan); }

.page-contact .step-title {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 600;
  color: var(--snow);
}

.page-contact .step-text {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .step-time {
  display: inline-flex;
  align-items: center;
  margin-top: 12px;
  padding: 4px 14px;
  border: 1px dashed var(--line-soft);
  border-radius: var(--pill);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
  transition: color 0.18s ease, background-color 0.18s ease, border-color 0.18s ease;
}

.page-contact .steps > li:hover .step-time,
.page-contact .steps > li:focus-within .step-time {
  color: var(--ink);
  background: var(--cyan);
  border-color: var(--cyan);
}

/* ---------- 合作申请 ---------- */
.page-contact .partner-grid {
  display: grid;
  gap: var(--cc-gap);
}

.page-contact .partner-copy p {
  margin: 0 0 16px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .partner-copy p:last-child { margin-bottom: 0; }

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

.page-contact .check-list li {
  position: relative;
  padding: 16px 18px 16px 46px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  background: rgba(16, 38, 58, 0.72);
}

.page-contact .check-list li::before {
  content: "✓";
  position: absolute;
  left: 18px;
  top: 16px;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--cyan);
}

.page-contact .check-label {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--snow);
}

.page-contact .check-note {
  display: block;
  margin-top: 4px;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--mist);
}

/* ---------- 来函地址 ---------- */
.page-contact .address-grid {
  display: grid;
  gap: var(--cc-gap);
}

.page-contact .address-panel {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 4vw, 40px);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  background:
    repeating-linear-gradient(0deg, rgba(169, 188, 205, 0.07) 0 1px, transparent 1px 28px),
    repeating-linear-gradient(90deg, rgba(169, 188, 205, 0.07) 0 1px, transparent 1px 28px),
    linear-gradient(160deg, var(--panel), var(--ink));
}

.page-contact .address-label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.26em;
  color: var(--gold);
}

.page-contact .address-value {
  margin: 0;
  font-size: clamp(20px, 3.2vw, 28px);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--snow);
}

.page-contact .address-note {
  margin: 16px 0 0;
  max-width: 52ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .address-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line-soft);
}

.page-contact .address-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

/* ---------- 底部入口色带 ---------- */
.page-contact .next-band {
  display: grid;
  gap: 18px;
  margin-top: clamp(28px, 5vw, 52px);
  padding: clamp(22px, 4vw, 34px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(100deg, rgba(35, 211, 238, 0.16), rgba(245, 166, 35, 0.14) 58%, rgba(192, 57, 43, 0.16));
}

.page-contact .next-band-text {
  margin: 0;
  max-width: 56ch;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--snow);
}

.page-contact .next-band-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-contact .direct-grid,
  .page-contact .partner-grid,
  .page-contact .address-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
  }

  .page-contact .next-band {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (min-width: 920px) {
  .page-contact .hero-grid {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: start;
  }

  .page-contact .note-vertical {
    display: block;
    padding-top: 10px;
  }

  .page-contact .channel-rail {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    overflow: visible;
    padding: 6px 0 0;
  }

  .page-contact .channel-card {
    flex: initial;
  }
}

@media (min-width: 1100px) {
  .page-contact .direct-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .step-time {
    transition: none;
  }

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