/* ============ 合作与联系 · 页面专属样式 ============ */
.page-contact {
  display: block;
  background:
    radial-gradient(880px 420px at 88% -8%, rgba(155, 123, 255, 0.13), transparent 62%),
    radial-gradient(760px 380px at 4% 12%, rgba(43, 232, 200, 0.06), transparent 66%),
    var(--abyss);
  color: var(--ice);
}

.page-contact .contact-context {
  padding-top: clamp(24px, 4vw, 48px);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-intro {
  padding: clamp(22px, 4vw, 48px) 0 clamp(40px, 6vw, 84px);
}

.page-contact .contact-intro__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 4vw, 56px);
}

.page-contact .contact-intro__title {
  margin: 18px 0 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(2.1rem, 5.4vw, 4.1rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--ice);
}

.page-contact .contact-intro__text {
  margin: 18px 0 0;
  max-width: 60ch;
  color: var(--mist);
  font-size: clamp(0.96rem, 1.6vw, 1.05rem);
  line-height: 1.85;
}

.page-contact .contact-clock {
  border-top: 2px solid var(--cyan);
  padding-top: 18px;
}

.page-contact .contact-clock__cap {
  margin: 0;
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.page-contact .contact-clock__num {
  margin: 12px 0 0;
  display: flex;
  align-items: baseline;
  gap: 6px;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: clamp(1.9rem, 5vw, 2.9rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
}

.page-contact .contact-clock__num span {
  color: var(--mist);
  font-weight: 400;
}

.page-contact .contact-clock__meta {
  margin: 10px 0 0;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-contact .contact-clock__note {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--grid);
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--ice);
  opacity: 0.82;
  word-break: break-all;
}

@media (min-width: 920px) {
  .page-contact .contact-intro__grid {
    grid-template-columns: minmax(0, 1.32fr) minmax(280px, 0.68fr);
    align-items: end;
  }

  .page-contact .contact-clock {
    transform: translateY(16px);
  }
}

/* ---------- 章节标头 ---------- */
.page-contact .contact-sec-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px 20px;
  align-items: start;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--grid);
}

.page-contact .contact-sec-index {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: clamp(1.9rem, 5vw, 3.2rem);
  line-height: 0.9;
  letter-spacing: -0.04em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(43, 232, 200, 0.5);
}

.page-contact .contact-sec-title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.45rem, 3.2vw, 2.3rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--ice);
}

.page-contact .contact-sec-note {
  margin: 10px 0 0;
  max-width: 58ch;
  color: var(--mist);
  font-size: 0.94rem;
  line-height: 1.75;
}

/* ---------- 01 三条通道 ---------- */
.page-contact .contact-ways {
  padding: clamp(42px, 7vw, 88px) 0;
}

.page-contact .contact-ways__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(16px, 2.2vw, 26px);
  margin-top: clamp(26px, 4vw, 46px);
}

.page-contact .way-card {
  --accent: var(--cyan);
  position: relative;
  display: flex;
  flex-direction: column;
  padding: clamp(20px, 2.4vw, 28px);
  background: var(--panel);
  border: 1px solid var(--grid);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
  transition: transform 0.3s cubic-bezier(0.2, 0.7, 0.3, 1), border-color 0.3s ease, background-color 0.3s ease;
}

.page-contact .way-card--business { --accent: var(--coral); }
.page-contact .way-card--content { --accent: var(--violet); }

.page-contact .way-card__tag {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  color: var(--accent);
}

.page-contact .way-card__tag::after {
  content: "";
  width: 30px;
  height: 1px;
  background: currentColor;
  opacity: 0.6;
}

.page-contact .way-card__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.12rem, 2.2vw, 1.42rem);
  line-height: 1.3;
  color: var(--ice);
}

.page-contact .way-card__desc {
  margin: 12px 0 0;
  color: var(--mist);
  font-size: 0.93rem;
  line-height: 1.78;
}

.page-contact .way-card__list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-contact .way-card__list li {
  position: relative;
  padding-left: 18px;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--ice);
  opacity: 0.86;
}

.page-contact .way-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 9px;
  height: 1px;
  background: var(--accent);
}

.page-contact .way-card__media {
  margin: 20px 0 0;
  border: 1px solid var(--grid);
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.page-contact .way-card__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(1.06) contrast(1.04);
}

.page-contact .way-card__reveal {
  display: grid;
  grid-template-rows: 0fr;
  opacity: 0;
  margin-top: 0;
  transition: grid-template-rows 0.34s ease, opacity 0.3s ease, margin-top 0.34s ease;
}

.page-contact .way-card__reveal > div {
  overflow: hidden;
}

.page-contact .way-card__line {
  margin: 0;
  font-size: 0.84rem;
  line-height: 1.72;
  color: var(--ice);
  word-break: break-all;
}

.page-contact .way-card__line:first-child {
  padding-top: 14px;
  border-top: 1px solid var(--grid);
}

.page-contact .way-card__line + .way-card__line {
  margin-top: 6px;
  color: var(--mist);
}

@media (min-width: 780px) {
  .page-contact .contact-ways__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }

  .page-contact .way-card--business { margin-top: 26px; }
  .page-contact .way-card--content { margin-top: 52px; }
}

@media (hover: hover) {
  .page-contact .way-card:hover,
  .page-contact .way-card:focus-within {
    transform: translateY(-6px);
    border-color: var(--accent);
    background: #0F2A44;
  }

  .page-contact .way-card:hover .way-card__reveal,
  .page-contact .way-card:focus-within .way-card__reveal {
    grid-template-rows: 1fr;
    opacity: 1;
    margin-top: 18px;
  }
}

@media (hover: none) {
  .page-contact .way-card__reveal {
    grid-template-rows: 1fr;
    opacity: 1;
    margin-top: 18px;
  }
}

/* ---------- 02 联系方式 ---------- */
.page-contact .contact-reach {
  padding: clamp(42px, 7vw, 88px) 0;
  background: var(--panel);
  border-top: 1px solid var(--grid);
  border-bottom: 1px solid var(--grid);
}

.page-contact .contact-reach__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 4vw, 52px);
}

.page-contact .reach-list {
  margin: clamp(24px, 3vw, 36px) 0 0;
  border-top: 1px solid var(--grid);
}

.page-contact .reach-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 18px 0;
  border-bottom: 1px solid var(--grid);
}

.page-contact .reach-item dt {
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-contact .reach-item dd {
  margin: 0;
  font-size: clamp(0.98rem, 1.8vw, 1.12rem);
  font-weight: 600;
  line-height: 1.6;
  color: var(--ice);
  word-break: break-word;
}

.page-contact .reach-item__note {
  margin: 0;
  font-size: 0.83rem;
  line-height: 1.72;
  color: var(--mist);
}

@media (min-width: 640px) {
  .page-contact .reach-item {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 6px 24px;
    align-items: baseline;
  }

  .page-contact .reach-item dt { grid-row: span 2; }
  .page-contact .reach-item dd { grid-column: 2; }
  .page-contact .reach-item__note { grid-column: 2; }
}

.page-contact .contact-reach__figure {
  margin: 0;
  align-self: end;
  border: 1px solid var(--grid);
}

@media (min-width: 900px) {
  .page-contact .contact-reach__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }
}

/* ---------- 03 合作推进时间线 ---------- */
.page-contact .contact-flow {
  padding: clamp(42px, 7vw, 88px) 0;
}

.page-contact .contact-flow__list {
  list-style: none;
  margin: clamp(30px, 4vw, 52px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
}

.page-contact .contact-flow__step {
  position: relative;
  padding: 0 0 30px 30px;
}

.page-contact .contact-flow__step::before {
  content: "";
  position: absolute;
  left: 0;
  top: 5px;
  width: 11px;
  height: 11px;
  border: 1px solid var(--grid);
  border-radius: 50%;
  background: var(--abyss);
  transition: background-color 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease;
}

.page-contact .contact-flow__step:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 22px;
  bottom: 0;
  width: 1px;
  background: var(--grid);
}

.page-contact .contact-flow__step.is-in::before {
  background: var(--cyan);
  border-color: var(--cyan);
  box-shadow: 0 0 0 5px rgba(43, 232, 200, 0.14);
}

.page-contact .contact-flow__num {
  margin: 0;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-contact .contact-flow__title {
  margin: 6px 0 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.05rem, 2vw, 1.24rem);
  line-height: 1.35;
  color: var(--ice);
}

.page-contact .contact-flow__text {
  margin: 10px 0 0;
  max-width: 40ch;
  font-size: 0.9rem;
  line-height: 1.78;
  color: var(--mist);
}

@media (min-width: 860px) {
  .page-contact .contact-flow__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    column-gap: 24px;
  }

  .page-contact .contact-flow__step {
    padding: 34px 0 0;
  }

  .page-contact .contact-flow__step::before {
    left: 0;
    top: 4px;
  }

  .page-contact .contact-flow__step:not(:last-child)::after {
    left: 13px;
    right: -24px;
    top: 9px;
    bottom: auto;
    width: auto;
    height: 1px;
  }

  .page-contact .contact-flow__text { max-width: none; }
}

/* ---------- 04 合作方向 ---------- */
.page-contact .contact-scope {
  padding: 0 0 clamp(42px, 7vw, 88px);
}

.page-contact .contact-scope__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  margin-top: clamp(24px, 3.5vw, 42px);
  border-top: 1px solid var(--grid);
}

.page-contact .scope-item {
  position: relative;
  padding: 22px 0 24px;
  border-bottom: 1px solid var(--grid);
}

.page-contact .scope-item::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 0;
  height: 1px;
  background: var(--cyan);
  transition: width 0.36s ease;
}

.page-contact .scope-item:hover::after {
  width: 100%;
}

.page-contact .scope-item__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.02rem, 1.9vw, 1.2rem);
  line-height: 1.35;
  color: var(--ice);
}

.page-contact .scope-item__text {
  margin: 10px 0 0;
  max-width: 46ch;
  font-size: 0.9rem;
  line-height: 1.78;
  color: var(--mist);
}

@media (min-width: 780px) {
  .page-contact .contact-scope__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 40px;
  }

  .page-contact .scope-item {
    padding: 26px 0 28px;
  }
}

.page-contact .contact-scope__more {
  margin: clamp(22px, 3vw, 32px) 0 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .contact-scope__more a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 232, 200, 0.4);
  padding-bottom: 1px;
}

/* ---------- 收尾入口 ---------- */
.page-contact .contact-next {
  padding: 0 0 clamp(46px, 7vw, 96px);
}

.page-contact .contact-next__inner {
  display: grid;
  gap: 20px;
  align-items: center;
  padding: clamp(22px, 3vw, 32px) clamp(20px, 3vw, 34px);
  border: 1px solid var(--grid);
  border-left: 3px solid var(--cyan);
  background: linear-gradient(100deg, rgba(43, 232, 200, 0.08), rgba(155, 123, 255, 0.05) 46%, transparent 78%);
}

.page-contact .contact-next__text {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--ice);
  opacity: 0.9;
}

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

.page-contact .contact-next__actions .btn {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

@media (min-width: 860px) {
  .page-contact .contact-next__inner {
    grid-template-columns: minmax(0, 1fr) auto;
  }
}