/* ================= page-contact ================= */
.page-contact {
  --pc-tab-w: 272px;
  --pc-ink-on-lime: #0E1633;
  --pc-dim-on-lime: #33421A;
  --pc-hover-panel: #1E2A57;
  display: block;
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumb {
  padding-top: clamp(20px, 3vw, 32px);
  color: var(--dim);
}

.page-contact .breadcrumb a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--t-fast), border-bottom-color var(--t-fast);
}

.page-contact .breadcrumb a:hover,
.page-contact .breadcrumb a:focus-visible {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

.page-contact .breadcrumb [aria-current="page"] {
  color: var(--ink);
}

/* ---------- 页首 ---------- */
.page-contact .page-head {
  padding-bottom: clamp(32px, 5vw, 64px);
  border-bottom: 1px solid var(--line);
}

.page-contact .page-head__title {
  margin: 12px 0 18px;
  max-width: 22ch;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(26px, 5.2vw, 52px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-contact .page-head__lede {
  max-width: 64ch;
  margin: 0;
  color: var(--muted);
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
}

/* ---------- 通用区块标题 ---------- */
.page-contact .coop-dirs__head h2,
.page-contact .coop-flow h2,
.page-contact .coop-contact h2,
.page-contact .coop-prep h2,
.page-contact .coop-faq h2,
.page-contact .coop-next h2 {
  margin: 10px 0 16px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(22px, 3.4vw, 38px);
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--ink);
}

/* ---------- 01 合作方向 ---------- */
.page-contact .coop-dirs {
  border-bottom: 1px solid var(--line);
}

.page-contact .coop-dirs__sub {
  max-width: 60ch;
  margin: 0;
  color: var(--muted);
  font-size: clamp(14.5px, 1.5vw, 16.5px);
  line-height: 1.85;
}

.page-contact .coop-dirs__media {
  margin: clamp(24px, 4vw, 44px) 0 clamp(26px, 4vw, 42px);
  aspect-ratio: 2 / 1;
  max-height: 380px;
  overflow: hidden;
  border: 1px solid var(--line);
}

.page-contact .coop-dirs__media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  object-position: center 42%;
}

/* ---------- 方向切换 ---------- */
.page-contact .dirs {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(16px, 2.4vw, 26px);
  align-items: start;
}

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

.page-contact .dir-tabs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .dir-tab {
  --tab-ink: var(--muted);
  --tab-dim: var(--dim);
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 15px 16px;
  background: var(--panel);
  border-left: 3px solid transparent;
  cursor: pointer;
  transition: background var(--t-fast), border-left-color var(--t-fast);
}

.page-contact .dir-tab:hover {
  background: var(--pc-hover-panel);
}

.page-contact .dir-tab__num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--tab-dim);
}

.page-contact .dir-tab__name {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.01em;
  line-height: 1.35;
  color: var(--tab-ink);
}

.page-contact .dir-tab__hint {
  font-size: 12px;
  line-height: 1.5;
  color: var(--tab-dim);
}

.page-contact #dir-grant:checked ~ .dir-tabs .dir-tab[for="dir-grant"],
.page-contact #dir-media:checked ~ .dir-tabs .dir-tab[for="dir-media"],
.page-contact #dir-amateur:checked ~ .dir-tabs .dir-tab[for="dir-amateur"],
.page-contact #dir-brand:checked ~ .dir-tabs .dir-tab[for="dir-brand"] {
  background: var(--lime);
  border-left-color: var(--bg);
  --tab-ink: var(--pc-ink-on-lime);
  --tab-dim: var(--pc-dim-on-lime);
}

.page-contact #dir-grant:focus-visible ~ .dir-tabs .dir-tab[for="dir-grant"],
.page-contact #dir-media:focus-visible ~ .dir-tabs .dir-tab[for="dir-media"],
.page-contact #dir-amateur:focus-visible ~ .dir-tabs .dir-tab[for="dir-amateur"],
.page-contact #dir-brand:focus-visible ~ .dir-tabs .dir-tab[for="dir-brand"] {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

.page-contact .dir-panes {
  min-height: 300px;
  padding: clamp(20px, 3vw, 36px);
  background: var(--panel);
  border: 1px solid var(--line);
}

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

.page-contact #dir-grant:checked ~ .dir-panes .dir-pane[data-dir="grant"],
.page-contact #dir-media:checked ~ .dir-panes .dir-pane[data-dir="media"],
.page-contact #dir-amateur:checked ~ .dir-panes .dir-pane[data-dir="amateur"],
.page-contact #dir-brand:checked ~ .dir-panes .dir-pane[data-dir="brand"] {
  display: block;
  animation: pcPaneIn 0.26s var(--ease) both;
}

@keyframes pcPaneIn {
  from { opacity: 0; transform: translateY(5px); }
  to   { opacity: 1; transform: none; }
}

.page-contact .dir-pane__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(20px, 2.6vw, 28px);
  line-height: 1.3;
  color: var(--ink);
}

.page-contact .dir-pane__who {
  margin: 0 0 16px;
  padding-left: 12px;
  border-left: 2px solid var(--lime);
  color: var(--lime);
  font-size: 14px;
  line-height: 1.72;
}

.page-contact .dir-pane__text {
  max-width: 62ch;
  margin: 0 0 22px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.85;
}

.page-contact .dir-pane__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-contact .dir-pane__list li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.72;
}

.page-contact .dir-pane__list .mono {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--orange);
}

/* ---------- 02 对接流程 ---------- */
.page-contact .coop-flow {
  border-bottom: 1px solid var(--line);
}

.page-contact .flow-list {
  list-style: none;
  margin: clamp(20px, 3vw, 32px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-contact .flow-step {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  padding: clamp(16px, 2.2vw, 22px) 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .flow-step__num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--lime);
  padding-top: 2px;
}

.page-contact .flow-step__title {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.page-contact .flow-step__text {
  max-width: 60ch;
  margin: 0;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.82;
}

.page-contact .flow-media {
  margin: clamp(24px, 3.4vw, 40px) 0 0;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  border: 1px solid var(--line);
}

.page-contact .flow-media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 03 联系渠道（浅色承载面） ---------- */
.page-contact .coop-contact h2 {
  color: var(--bg);
}

.page-contact .coop-contact .section-index {
  color: var(--teal);
}

.page-contact .coop-contact__intro {
  max-width: 62ch;
  margin: 0;
  color: var(--snow-ink);
  font-size: clamp(14.5px, 1.5vw, 16px);
  line-height: 1.85;
}

.page-contact .channel-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: clamp(22px, 3vw, 34px);
  background: var(--snow-line);
  border: 1px solid var(--snow-line);
}

.page-contact .channel {
  background: var(--snow);
  padding: clamp(20px, 3vw, 34px);
}

.page-contact .channel__label {
  margin: 0 0 14px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--teal);
}

.page-contact .channel__value {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: clamp(16px, 3.4vw, 30px);
  line-height: 1.34;
  letter-spacing: -0.01em;
  color: var(--bg);
  overflow-wrap: anywhere;
}

.page-contact .channel__value--sm {
  font-size: clamp(15px, 1.7vw, 19px);
  line-height: 1.62;
  letter-spacing: 0;
  overflow-wrap: break-word;
}

.page-contact .channel__note {
  margin: 0;
  color: var(--snow-ink);
  font-size: 13.5px;
  line-height: 1.75;
}

.page-contact .channel__note a {
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid var(--snow-line);
  transition: border-bottom-color var(--t-fast);
}

.page-contact .channel__note a:hover,
.page-contact .channel__note a:focus-visible {
  border-bottom-color: var(--teal);
}

.page-contact .channel__river {
  display: block;
  width: 100%;
  max-width: 320px;
  height: auto;
  margin: 6px 0 14px;
}

/* ---------- 04 来信准备 ---------- */
.page-contact .coop-prep {
  border-bottom: 1px solid var(--line);
}

.page-contact .prep-list {
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: clamp(20px, 3vw, 32px) 0 0;
  padding: 0;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .prep-item {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: clamp(16px, 2.2vw, 22px) clamp(16px, 2.4vw, 26px);
  background: var(--panel);
  transition: background var(--t-fast);
}

.page-contact .prep-item:hover {
  background: var(--pc-hover-panel);
}

.page-contact .prep-item__num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--orange);
  padding-top: 3px;
}

.page-contact .prep-item__text {
  display: block;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

/* ---------- 05 常见问题 ---------- */
.page-contact .coop-faq {
  border-bottom: 1px solid var(--line);
}

.page-contact .faq-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: clamp(18px, 2.6vw, 26px);
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .faq-item {
  padding: clamp(20px, 3vw, 30px);
  background: var(--bg);
}

.page-contact .faq-item h3 {
  margin: 0 0 10px;
  font-size: 16.5px;
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.5;
  color: var(--ink);
}

.page-contact .faq-item p {
  max-width: 72ch;
  margin: 0;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.82;
}

.page-contact .faq-item b {
  color: var(--lime);
  font-weight: 600;
}

/* ---------- NEXT ---------- */
.page-contact .coop-next__inner {
  padding-top: clamp(20px, 3vw, 32px);
  border-top: 3px solid var(--lime);
}

.page-contact .coop-next p {
  max-width: 62ch;
  margin: 0 0 22px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.85;
}

/* ---------- 平板 ---------- */
@media (min-width: 720px) {
  .page-contact .dir-tabs {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .prep-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .faq-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
    background: none;
    border: 1px solid var(--line);
  }

  .page-contact .faq-item {
    border-right: 1px solid var(--line);
  }

  .page-contact .faq-item:last-child {
    border-right: 0;
  }

  .page-contact .channel-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .channel--address {
    grid-column: 1 / -1;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 960px) {
  .page-contact .dirs {
    grid-template-columns: var(--pc-tab-w) minmax(0, 1fr);
  }

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

  .page-contact .dir-panes {
    min-height: 400px;
  }

  .page-contact .flow-media {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    margin-top: clamp(24px, 3.4vw, 44px);
  }

  .page-contact .coop-dirs__media {
    max-height: 420px;
  }
}

/* ---------- 降低动态 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-contact .dir-pane,
  .page-contact .dir-tab,
  .page-contact .prep-item {
    animation: none !important;
    transition: none !important;
  }
}
<<<END>>>