.page-contact {
  --contact-line: rgba(234, 244, 238, 0.14);
  padding-bottom: clamp(20px, 5vw, 48px);
}

.page-contact .contact-crumb {
  padding-top: clamp(14px, 3vw, 22px);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(16px, 4vw, 30px) 0 clamp(34px, 7vw, 72px);
  background:
    radial-gradient(120% 78% at 92% -10%, rgba(56, 232, 208, 0.16), transparent 62%),
    linear-gradient(175deg, var(--ink-900) 0%, var(--ink-950) 68%);
  border-bottom: 2px solid var(--moss-800);
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--lime-400), transparent 58%);
  opacity: 0.65;
}

.page-contact .hero-grid {
  display: grid;
  gap: 20px;
  grid-template-areas:
    "lead"
    "panel"
    "figure";
}

.page-contact .hero-lead {
  grid-area: lead;
}

.page-contact .hero-kicker {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan-400);
}

.page-contact .hero-kicker::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--lime-400);
}

.page-contact .hero-lead h1 {
  margin: 12px 0 14px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(30px, 7.2vw, 54px);
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--paper-100);
}

.page-contact .hero-sub {
  margin: 0;
  max-width: 34em;
  font-size: 16.5px;
  line-height: 1.85;
  color: rgba(234, 244, 238, 0.84);
}

.page-contact .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-contact .hero-meta {
  list-style: none;
  margin: 26px 0 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--contact-line);
  display: grid;
  gap: 10px;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--muted);
}

.page-contact .meta-k {
  display: inline-block;
  margin-right: 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--lime-400);
  border: 1px solid rgba(198, 255, 61, 0.4);
  border-radius: 5px;
  padding: 1px 5px;
}

.page-contact .hero-figure {
  grid-area: figure;
  margin: 0;
  overflow: hidden;
}

.page-contact .hero-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  filter: saturate(0.86) contrast(1.06);
}

/* ---------- 合作类型切换面板 ---------- */
.page-contact .switch {
  grid-area: panel;
  position: relative;
  padding: 14px;
  border: 2px solid var(--contact-line);
  border-radius: var(--radius);
  background: linear-gradient(155deg, rgba(22, 48, 42, 0.94), rgba(7, 18, 15, 0.97));
  box-shadow: var(--shadow-hard);
}

.page-contact .switch-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-contact .switch-tabs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.page-contact .switch-tab {
  display: block;
  padding: 9px 6px;
  border: 2px solid var(--contact-line);
  border-radius: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  text-align: center;
  color: var(--muted);
  cursor: pointer;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.page-contact .switch-tab:hover {
  color: var(--paper-100);
  border-color: rgba(198, 255, 61, 0.5);
}

.page-contact #coop-league:checked ~ .switch-tabs .switch-tab[for="coop-league"],
.page-contact #coop-venue:checked ~ .switch-tabs .switch-tab[for="coop-venue"],
.page-contact #coop-brand:checked ~ .switch-tabs .switch-tab[for="coop-brand"],
.page-contact #coop-data:checked ~ .switch-tabs .switch-tab[for="coop-data"] {
  background: var(--lime-400);
  border-color: var(--lime-400);
  color: var(--ink-950);
  font-weight: 700;
}

.page-contact #coop-league:focus-visible ~ .switch-tabs .switch-tab[for="coop-league"],
.page-contact #coop-venue:focus-visible ~ .switch-tabs .switch-tab[for="coop-venue"],
.page-contact #coop-brand:focus-visible ~ .switch-tabs .switch-tab[for="coop-brand"],
.page-contact #coop-data:focus-visible ~ .switch-tabs .switch-tab[for="coop-data"] {
  outline: 2px solid var(--cyan-400);
  outline-offset: 2px;
}

.page-contact .switch-panes {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--contact-line);
}

.page-contact .pane {
  display: none;
}

.page-contact #coop-league:checked ~ .switch-panes #pane-league,
.page-contact #coop-venue:checked ~ .switch-panes #pane-venue,
.page-contact #coop-brand:checked ~ .switch-panes #pane-brand,
.page-contact #coop-data:checked ~ .switch-panes #pane-data {
  display: block;
}

.page-contact .pane-kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--orange-500);
}

.page-contact .pane-title {
  margin: 6px 0 0;
  font-family: var(--font-display);
  font-size: 20px;
  line-height: 1.3;
  color: var(--paper-100);
}

.page-contact .pane-list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(234, 244, 238, 0.84);
}

.page-contact .pane-list li {
  position: relative;
  padding-left: 16px;
}

.page-contact .pane-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 7px;
  height: 2px;
  background: var(--orange-500);
}

.page-contact .pane-note {
  margin: 12px 0 0;
  padding: 10px 12px;
  border-left: 2px solid var(--lime-400);
  background: rgba(198, 255, 61, 0.07);
  font-size: 13px;
  line-height: 1.72;
  color: rgba(234, 244, 238, 0.84);
}

.page-contact .pane-link {
  margin: 10px 0 0;
  font-size: 13px;
}

.page-contact .pane-link a {
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 232, 208, 0.4);
}

/* ---------- 区块通用 ---------- */
.page-contact .contact-section {
  padding: clamp(38px, 7vw, 76px) 0;
  border-top: 2px solid rgba(22, 48, 42, 0.9);
}

.page-contact .contact-section--tint {
  background: linear-gradient(180deg, rgba(22, 48, 42, 0.55), rgba(7, 18, 15, 0));
}

.page-contact .contact-section--foot {
  padding-bottom: clamp(30px, 6vw, 60px);
}

.page-contact .section-head {
  max-width: 46em;
  margin-bottom: clamp(20px, 3.5vw, 34px);
}

.page-contact .section-head h2 {
  margin: 10px 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 4.4vw, 38px);
  line-height: 1.16;
  color: var(--paper-100);
}

.page-contact .section-desc {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(234, 244, 238, 0.78);
}

.page-contact .section-desc a {
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 232, 208, 0.4);
}

/* ---------- 联系渠道 ---------- */
.page-contact .channel-layout {
  display: grid;
  gap: 20px;
}

.page-contact .channel-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(0, 1fr);
}

.page-contact .channel-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px;
}

.page-contact .channel-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--silver-300);
  opacity: 0.85;
}

.page-contact .channel-value {
  margin: 0;
  font-size: 16px;
  line-height: 1.65;
  color: var(--paper-100);
  overflow-wrap: anywhere;
}

.page-contact .channel-value--mono {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: -0.01em;
}

.page-contact .channel-value a {
  color: var(--lime-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(198, 255, 61, 0.45);
}

.page-contact .channel-hint {
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--muted);
}

.page-contact .channel-card .copy-btn {
  align-self: flex-start;
  margin-top: 8px;
}

.page-contact .channel-figure {
  margin: 0;
  overflow: hidden;
}

.page-contact .channel-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.05);
}

/* ---------- 数据纠错 ---------- */
.page-contact .fix-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .fix-step {
  padding: 18px;
  border: 2px solid var(--contact-line);
  border-radius: var(--radius);
  background: rgba(12, 26, 22, 0.74);
  box-shadow: var(--shadow-hard);
}

.page-contact .step-num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--lime-400);
}

.page-contact .fix-step h3 {
  margin: 8px 0;
  font-size: 17px;
  line-height: 1.5;
  color: var(--paper-100);
}

.page-contact .fix-step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(234, 244, 238, 0.78);
}

/* ---------- 合作流程 ---------- */
.page-contact .flow {
  display: grid;
  gap: 12px;
}

.page-contact .flow-step {
  padding: 14px 16px;
  border: 2px solid var(--contact-line);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(22, 48, 42, 0.74), rgba(7, 18, 15, 0.92));
  transition: border-color 0.18s ease;
}

.page-contact .flow-step[open] {
  border-color: rgba(198, 255, 61, 0.45);
}

.page-contact .flow-step > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--paper-100);
}

.page-contact .flow-step > summary::-webkit-details-marker {
  display: none;
}

.page-contact .flow-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--orange-500);
  border: 1px solid rgba(255, 107, 44, 0.45);
  border-radius: 6px;
  padding: 2px 6px;
}

.page-contact .flow-step p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(234, 244, 238, 0.78);
}

.page-contact .flow-note {
  margin: 18px 0 0;
  padding-left: 12px;
  border-left: 2px solid var(--cyan-400);
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 常问 ---------- */
.page-contact .faq-layout {
  display: grid;
  gap: 18px;
}

.page-contact .faq-list {
  display: grid;
  gap: 10px;
}

.page-contact .faq-item {
  padding: 14px 16px;
  border: 2px solid var(--contact-line);
  border-radius: var(--radius);
  background: rgba(12, 26, 22, 0.68);
  transition: border-color 0.18s ease;
}

.page-contact .faq-item[open] {
  border-color: rgba(56, 232, 208, 0.4);
}

.page-contact .faq-item > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 14px;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--paper-100);
}

.page-contact .faq-item > summary::-webkit-details-marker {
  display: none;
}

.page-contact .faq-item > summary::after {
  content: "＋";
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--lime-400);
}

.page-contact .faq-item[open] > summary::after {
  content: "－";
}

.page-contact .faq-item p {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: rgba(234, 244, 238, 0.78);
}

/* ---------- 地址与备案 ---------- */
.page-contact .fact-block {
  padding: clamp(18px, 3vw, 28px);
  border: 2px solid rgba(234, 244, 238, 0.1);
  border-radius: var(--radius);
  background: rgba(7, 18, 15, 0.6);
}

.page-contact .fact-list {
  margin: 14px 0 0;
  display: grid;
  gap: 14px;
}

.page-contact .fact-line {
  padding-left: 12px;
  border-left: 2px solid rgba(198, 255, 61, 0.32);
}

.page-contact .fact-line dt {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--silver-300);
}

.page-contact .fact-line dd {
  margin: 4px 0 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--paper-100);
  overflow-wrap: anywhere;
}

.page-contact .aside-links {
  margin: 20px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--contact-line);
  font-size: 13.5px;
  line-height: 2;
  color: var(--muted);
}

.page-contact .aside-links a {
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 232, 208, 0.35);
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-contact .channel-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .switch-tabs {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-contact .fix-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    align-items: start;
  }

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

@media (min-width: 900px) {
  .page-contact .hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    grid-template-areas:
      "lead figure"
      "lead panel";
    align-items: start;
    column-gap: clamp(24px, 4vw, 52px);
    row-gap: 20px;
  }

  .page-contact .hero-lead {
    padding-right: 4px;
  }

  .page-contact .channel-layout {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
    gap: 24px;
  }

  .page-contact .channel-figure img {
    aspect-ratio: 3 / 4;
  }

  .page-contact .faq-layout {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    align-items: start;
    gap: 34px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .switch-tab,
  .page-contact .flow-step,
  .page-contact .faq-item {
    transition: none;
  }
}