.page-contact {
  --pc-ink-soft: rgba(27, 20, 16, 0.72);
}

/* ============ 首屏 ============ */
.page-contact .co-hero {
  padding-top: 112px;
  padding-bottom: 8px;
}

.page-contact .co-hero-copy {
  max-width: 820px;
  margin-top: 20px;
}

.page-contact .co-hero h1 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.85rem, 5.2vw, 3.25rem);
  line-height: 1.12;
  letter-spacing: 0.01em;
  color: var(--white);
  margin: 14px 0 0;
}

.page-contact .co-hero-lead {
  margin: 20px 0 0;
  max-width: 46em;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--white);
}

.page-contact .co-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-contact .co-hero-media {
  position: relative;
  margin-top: 44px;
}

.page-contact .co-hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(118deg, rgba(43, 231, 224, 0.2), transparent 48%);
  pointer-events: none;
}

/* ============ 三条合作路径 + 联系卡 ============ */
.page-contact .co-paths-section {
  position: relative;
}

.page-contact .co-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-top: 40px;
}

.page-contact .co-paths {
  display: grid;
  gap: 20px;
}

.page-contact .co-path {
  position: relative;
  padding: 56px 24px 26px;
  background: linear-gradient(180deg, var(--panel-top), var(--panel-btm));
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  border-radius: var(--radius);
  transition: border-color 0.24s var(--ease), box-shadow 0.3s var(--ease);
}

.page-contact .co-path:hover {
  border-color: var(--line-cyan);
  box-shadow: 0 0 0 1px rgba(43, 231, 224, 0.18), 0 26px 50px -34px rgba(0, 0, 0, 0.95);
}

.page-contact .co-path .paper-label {
  position: absolute;
  top: 18px;
  left: 24px;
}

.page-contact .co-path-who {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--muted);
}

.page-contact .co-path-title {
  font-family: var(--font-head);
  font-size: 1.3125rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  line-height: 1.3;
  color: var(--white);
  margin: 10px 0 0;
}

.page-contact .co-path-desc {
  margin: 14px 0 0;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .co-list {
  list-style: none;
  margin: 18px 0 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 10px;
}

.page-contact .co-list li {
  position: relative;
  padding-left: 18px;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--white);
}

.page-contact .co-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 2px;
  background: var(--gold);
}

/* 联系卡：米白纸面 */
.page-contact .co-contact-card {
  position: relative;
  overflow: hidden;
  padding: 34px 22px 26px;
  background: var(--paper);
  color: var(--paper-ink);
  border: 2px solid var(--paper-ink);
  border-radius: var(--radius);
  box-shadow: 10px 12px 0 -2px rgba(43, 231, 224, 0.24);
}

.page-contact .co-contact-bg {
  position: absolute;
  inset: 0;
  opacity: 0.15;
  pointer-events: none;
}

.page-contact .co-contact-bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-contact .co-contact-body {
  position: relative;
  z-index: 1;
}

.page-contact .co-contact-kicker {
  margin: 0;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--magenta);
}

.page-contact .co-contact-title {
  font-family: var(--font-head);
  font-size: 1.375rem;
  font-weight: 800;
  line-height: 1.28;
  color: var(--paper-ink);
  margin: 8px 0 0;
  max-width: 12em;
}

.page-contact .co-contact-note {
  margin: 14px 0 0;
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--pc-ink-soft);
}

.page-contact .co-contact-list {
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .co-contact-list > div {
  border-top: 1px solid rgba(27, 20, 16, 0.22);
  padding-top: 12px;
}

.page-contact .co-contact-list dt {
  margin: 0 0 4px;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--pc-ink-soft);
}

.page-contact .co-contact-list dd {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--paper-ink);
  word-break: break-word;
}

.page-contact .co-contact-list dd.mono {
  font-size: 0.875rem;
  letter-spacing: 0.02em;
}

.page-contact .co-contact-sub {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px dashed rgba(27, 20, 16, 0.35);
  font-size: 0.8125rem;
  line-height: 1.8;
  color: var(--pc-ink-soft);
}

.page-contact .co-contact-link {
  display: inline-block;
  margin-top: 16px;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--paper-ink);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--magenta);
  text-decoration-thickness: 2px;
}

.page-contact .co-contact-link:hover {
  color: var(--magenta);
}

.page-contact .co-sticker {
  position: absolute;
  top: 16px;
  right: -10px;
  z-index: 2;
  transform: rotate(-3deg);
  padding: 6px 16px;
  background: var(--gold);
  color: var(--paper-ink);
  border: 1px solid var(--paper-ink);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

/* ============ 对接流程 ============ */
.page-contact .co-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 36px;
}

.page-contact .co-step {
  position: relative;
  padding: 20px 20px 18px;
  background: rgba(19, 26, 69, 0.6);
  border: 1px solid var(--line);
  border-top: 3px solid var(--cyan);
  border-radius: var(--radius);
  transition: background 0.24s var(--ease), border-color 0.24s var(--ease);
}

.page-contact .co-step[open] {
  background: linear-gradient(180deg, var(--panel-top), var(--panel-btm));
  border-color: var(--line-cyan);
}

.page-contact .co-step > summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 6px 12px;
  align-items: start;
  padding-right: 22px;
}

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

.page-contact .co-step > summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
}

.page-contact .co-step > summary::after {
  content: "▾";
  position: absolute;
  right: 0;
  top: 2px;
  font-size: 0.75rem;
  color: var(--cyan);
  transition: transform 0.24s var(--ease);
}

.page-contact .co-step[open] > summary::after {
  transform: rotate(180deg);
}

.page-contact .co-step-num {
  grid-row: span 2;
  font-size: 1.375rem;
  font-weight: 700;
  line-height: 1.1;
  color: var(--gold);
}

.page-contact .co-step-name {
  font-family: var(--font-head);
  font-size: 1.0625rem;
  font-weight: 800;
  line-height: 1.3;
  color: var(--white);
}

.page-contact .co-step-time {
  grid-column: 2;
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-contact .co-step-body {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.page-contact .co-step-body p {
  margin: 0 0 10px;
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .co-step-body p:last-child {
  margin-bottom: 0;
}

/* ============ 对接常见问题 ============ */
.page-contact .co-faq-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-top: 32px;
}

.page-contact .co-faq {
  padding: 18px 20px;
  background: rgba(19, 26, 69, 0.55);
  border: 1px solid var(--line);
  border-left: 2px solid var(--magenta);
  border-radius: var(--radius);
  transition: border-color 0.24s var(--ease), background 0.24s var(--ease);
}

.page-contact .co-faq[open] {
  background: rgba(19, 26, 69, 0.85);
  border-color: var(--line-cyan);
}

.page-contact .co-faq > summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding-right: 26px;
  font-family: var(--font-head);
  font-size: 0.9375rem;
  font-weight: 700;
  line-height: 1.6;
  color: var(--white);
}

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

.page-contact .co-faq > summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
}

.page-contact .co-faq > summary::after {
  content: "▾";
  position: absolute;
  right: 0;
  top: 3px;
  font-size: 0.75rem;
  color: var(--magenta);
  transition: transform 0.24s var(--ease);
}

.page-contact .co-faq[open] > summary::after {
  transform: rotate(180deg);
}

.page-contact .co-faq-body {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
}

.page-contact .co-faq-body p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.85;
  color: var(--muted);
}

/* ============ 玩家分流 ============ */
.page-contact .co-player-panel {
  position: relative;
  overflow: hidden;
  padding: 38px 22px 34px;
  background:
    radial-gradient(circle at 88% 10%, rgba(43, 231, 224, 0.16), transparent 44%),
    linear-gradient(158deg, rgba(255, 193, 48, 0.12), transparent 56%),
    var(--navy);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-contact .co-player-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 96px;
  height: 4px;
  background: var(--gold);
}

.page-contact .co-player-copy {
  position: relative;
  max-width: 780px;
}

.page-contact .co-player-copy h2 {
  font-family: var(--font-head);
  font-size: clamp(1.4rem, 3.4vw, 2rem);
  font-weight: 800;
  line-height: 1.24;
  color: var(--white);
  margin: 12px 0 0;
}

.page-contact .co-player-copy p {
  margin: 16px 0 0;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .co-player-copy p a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .co-player-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

/* ============ 响应式 ============ */
@media (min-width: 760px) {
  .page-contact .co-hero {
    padding-top: 128px;
  }

  .page-contact .co-path {
    padding: 58px 32px 30px;
  }

  .page-contact .co-path .paper-label {
    left: 32px;
  }

  .page-contact .co-contact-card {
    padding: 38px 30px 30px;
  }

  .page-contact .co-player-panel {
    padding: 52px 44px 48px;
  }

  .page-contact .co-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .page-contact .co-faq-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-contact .co-split {
    grid-template-columns: minmax(0, 1.32fr) minmax(300px, 0.86fr);
    gap: 40px;
    align-items: start;
  }

  .page-contact .co-contact-card {
    position: sticky;
    top: 104px;
  }
}

@media (min-width: 1180px) {
  .page-contact .co-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 480px) {
  .page-contact .co-hero-actions .btn,
  .page-contact .co-player-actions .btn {
    width: 100%;
    text-align: center;
  }

  .page-contact .co-hero-media {
    margin-top: 32px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .co-path,
  .page-contact .co-step,
  .page-contact .co-faq,
  .page-contact .co-step > summary::after,
  .page-contact .co-faq > summary::after {
    transition: none;
  }

  .page-contact .co-sticker {
    transform: none;
  }
}