.page-contact {
  --contact-glow: rgba(30, 122, 87, 0.32);
  --contact-warm: rgba(227, 179, 65, 0.12);
  --contact-soft: rgba(236, 244, 246, 0.035);
  --contact-ring: rgba(56, 192, 138, 0.18);
  display: block;
}

/* ============ 首屏 ============ */
.page-contact .contact-hero {
  position: relative;
  padding: clamp(22px, 4vw, 44px) 0 clamp(40px, 6vw, 80px);
  background:
    radial-gradient(900px 480px at 92% -14%, var(--contact-glow), transparent 62%),
    radial-gradient(680px 420px at -12% 108%, var(--contact-warm), transparent 64%),
    linear-gradient(180deg, var(--night) 0%, var(--night-deep) 100%);
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-hero .breadcrumb {
  margin-bottom: clamp(16px, 2.4vw, 26px);
}

.page-contact .contact-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 46px);
  align-items: start;
}

.page-contact .contact-hero__eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--mint);
}

.page-contact .contact-hero__title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 5.6vw, 54px);
  line-height: 1.12;
  letter-spacing: -0.012em;
  color: var(--ink);
}

.page-contact .contact-hero__lede {
  max-width: 36em;
  margin: 0 0 clamp(22px, 3vw, 32px);
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.8;
  color: var(--muted);
}

/* 联系方式大卡 */
.page-contact .reach-card {
  position: relative;
  padding: clamp(20px, 3vw, 32px);
  background: var(--glass);
  border: 1px solid var(--line);
  border-left: 3px solid var(--grass);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.page-contact .reach-row {
  display: grid;
  gap: 6px;
  padding: 16px 0;
}

.page-contact .reach-row + .reach-row {
  border-top: 1px solid var(--line);
}

.page-contact .reach-row__key {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--muted);
}

.page-contact .reach-row__value {
  margin: 0;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.68;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.page-contact .reach-row__value--mono {
  font-family: var(--font-mono);
  font-size: clamp(16px, 2.6vw, 25px);
  letter-spacing: 0.01em;
  font-weight: 500;
}

.page-contact .reach-row__hint {
  margin: 2px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .reach-card__note {
  margin: 18px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.72;
  color: var(--muted-deep);
}

/* 首屏配图 */
.page-contact .contact-hero__media {
  margin: 0;
}

.page-contact .contact-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-contact .contact-hero__caption {
  margin: 12px 0 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--muted-deep);
}

/* ============ 需求分流 ============ */
.page-contact .section--pitch {
  background: linear-gradient(180deg, var(--pitch) 0%, var(--night-deep) 100%);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-contact .intake {
  position: relative;
  display: grid;
  gap: 18px;
}

.page-contact .intake__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

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

.page-contact .intake__tab {
  display: grid;
  gap: 5px;
  padding: 15px 18px 16px 20px;
  background: var(--contact-soft);
  border: 1px solid var(--line);
  border-left: 3px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.page-contact .intake__tab:hover {
  background: var(--glass);
  transform: translateY(-2px);
}

.page-contact .intake__tab-no {
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--muted-deep);
}

.page-contact .intake__tab-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(15px, 1.7vw, 18px);
  color: var(--ink);
}

.page-contact .intake__tab-sub {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--muted);
}

.page-contact #intake-a:checked ~ .intake__tabs .intake__tab[for="intake-a"],
.page-contact #intake-b:checked ~ .intake__tabs .intake__tab[for="intake-b"],
.page-contact #intake-c:checked ~ .intake__tabs .intake__tab[for="intake-c"] {
  background: var(--glass-strong);
  border-left-color: var(--mint);
}

.page-contact #intake-a:checked ~ .intake__tabs .intake__tab[for="intake-a"] .intake__tab-no,
.page-contact #intake-b:checked ~ .intake__tabs .intake__tab[for="intake-b"] .intake__tab-no,
.page-contact #intake-c:checked ~ .intake__tabs .intake__tab[for="intake-c"] .intake__tab-no {
  color: var(--mint);
}

.page-contact #intake-a:focus-visible ~ .intake__tabs .intake__tab[for="intake-a"],
.page-contact #intake-b:focus-visible ~ .intake__tabs .intake__tab[for="intake-b"],
.page-contact #intake-c:focus-visible ~ .intake__tabs .intake__tab[for="intake-c"] {
  outline: 2px solid var(--mint);
  outline-offset: 2px;
}

.page-contact .intake__panel {
  display: none;
  padding: clamp(22px, 3vw, 34px);
  background: var(--glass);
  border: 1px solid var(--line);
  border-top: 3px solid var(--grass);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.page-contact #intake-a:checked ~ .intake__panels .intake__panel[data-intake="a"],
.page-contact #intake-b:checked ~ .intake__panels .intake__panel[data-intake="b"],
.page-contact #intake-c:checked ~ .intake__panels .intake__panel[data-intake="c"] {
  display: block;
}

.page-contact .intake__panel-title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(19px, 2.4vw, 26px);
  color: var(--ink);
}

.page-contact .intake__panel-lede {
  margin: 0 0 22px;
  max-width: 38em;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .intake__list-key {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--gold);
}

.page-contact .need-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .need-list li {
  position: relative;
  padding-left: 22px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink);
}

.page-contact .need-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 10px;
  height: 2px;
  background: var(--gold);
}

/* ============ 合作与引用（档案纸色） ============ */
.page-contact .section--paper {
  background: linear-gradient(180deg, var(--paper) 0%, #E9E3D4 100%);
  color: var(--ink-on-paper);
}

.page-contact .section--paper .section-head__title {
  color: var(--ink-on-paper);
}

.page-contact .section--paper .section-head__no {
  color: var(--grass);
}

.page-contact .section--paper .section-head__lede {
  color: #465A64;
}

.page-contact .partner-grid {
  display: grid;
  gap: 18px;
}

.page-contact .partner-card {
  padding: clamp(18px, 2.6vw, 28px);
  background: rgba(255, 255, 255, 0.74);
  border: 1px solid rgba(13, 29, 40, 0.1);
  border-top: 3px solid var(--grass);
  border-radius: var(--radius);
}

.page-contact .partner-card__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(17px, 2vw, 21px);
  color: var(--ink-on-paper);
}

.page-contact .partner-card__text {
  margin: 0;
  max-width: 40em;
  font-size: 14.5px;
  line-height: 1.82;
  color: #2A3D47;
}

.page-contact .partner-media {
  margin: 6px 0 0;
  border-radius: var(--radius);
  overflow: hidden;
}

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

.page-contact .partner-media .media-frame__caption {
  color: #465A64;
}

/* ============ 处理流程 ============ */
.page-contact #flow {
  background: linear-gradient(180deg, var(--night-deep) 0%, var(--night) 100%);
}

.page-contact .flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 4px;
}

.page-contact .flow__step {
  position: relative;
  padding: 26px 6px 24px 0;
  border-top: 2px solid var(--line);
}

.page-contact .flow__tick {
  position: absolute;
  top: -6px;
  left: 0;
  width: 10px;
  height: 10px;
  border: 2px solid var(--line);
  border-radius: 50%;
  background: var(--night-deep);
  transition: border-color 0.22s ease, background 0.22s ease, box-shadow 0.22s ease;
}

.page-contact .flow__step:hover .flow__tick,
.page-contact .flow__step:focus-within .flow__tick {
  border-color: var(--mint);
  background: var(--mint);
  box-shadow: 0 0 0 4px var(--contact-ring);
}

.page-contact .flow__no {
  display: block;
  margin-bottom: 10px;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--gold);
}

.page-contact .flow__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(16px, 1.9vw, 20px);
  color: var(--ink);
}

.page-contact .flow__text {
  margin: 0;
  max-width: 30em;
  font-size: 14px;
  line-height: 1.78;
  color: var(--muted);
  transition: color 0.22s ease;
}

.page-contact .flow__step:hover .flow__text,
.page-contact .flow__step:focus-within .flow__text {
  color: var(--ink);
}

/* ============ 订阅与账号 ============ */
.page-contact .account-list {
  list-style: none;
  margin: 0 0 clamp(26px, 4vw, 44px);
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-contact .account-list__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

.page-contact .account-list__no {
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--mint);
  padding-top: 3px;
}

.page-contact .account-list__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(16px, 1.9vw, 19px);
  color: var(--ink);
}

.page-contact .account-list__text {
  margin: 0;
  max-width: 42em;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .account-list__link {
  color: var(--gold);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-contact .account-list__link:hover,
.page-contact .account-list__link:focus-visible {
  color: var(--mint);
}

.page-contact .contact-cta {
  display: grid;
  gap: 18px;
  padding: clamp(20px, 3vw, 30px);
  background: var(--glass);
  border: 1px solid var(--line);
  border-left: 3px solid var(--gold);
  border-radius: var(--radius);
}

.page-contact .contact-cta__text {
  margin: 0;
  max-width: 40em;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink);
}

.page-contact .contact-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ============ 响应式 ============ */
@media (min-width: 640px) {
  .page-contact .intake__tabs {
    grid-template-columns: repeat(1, minmax(0, 1fr));
  }

  .page-contact .account-list__item {
    grid-template-columns: 56px 1fr;
  }
}

@media (min-width: 820px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-contact .intake {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(22px, 3.4vw, 40px);
    align-items: start;
  }

  .page-contact .partner-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 22px;
  }

  .page-contact .partner-grid .partner-card:nth-child(1) {
    grid-column: 1 / span 7;
  }

  .page-contact .partner-grid .partner-card:nth-child(2) {
    grid-column: 8 / span 5;
    margin-top: 34px;
  }

  .page-contact .partner-grid .partner-card:nth-child(3) {
    grid-column: 2 / span 10;
  }

  .page-contact .partner-grid .partner-media {
    grid-column: 1 / -1;
    max-width: 760px;
  }

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

  .page-contact .flow__step {
    padding: 26px 22px 24px 0;
  }

  .page-contact .contact-cta {
    grid-template-columns: 1fr auto;
    align-items: center;
  }
}

@media (min-width: 1040px) {
  .page-contact .contact-hero__grid {
    gap: clamp(30px, 4vw, 56px);
  }

  .page-contact .intake__tab {
    padding: 18px 20px 19px 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .intake__tab,
  .page-contact .flow__tick,
  .page-contact .flow__text {
    transition: none;
  }
}