.page-contact {
  --co-hair: rgba(38, 64, 90, 0.78);
  --co-glow: rgba(47, 230, 200, 0.42);
  --co-panel: rgba(19, 41, 63, 0.82);
  display: block;
  overflow-x: clip;
  padding-bottom: clamp(40px, 7vw, 88px);
}

/* ---------- hero ---------- */
.page-contact .co-hero {
  position: relative;
  display: grid;
  gap: clamp(28px, 5vw, 44px);
  padding: clamp(18px, 4vw, 40px) 0 clamp(40px, 7vw, 84px);
}

.page-contact .co-hero::before {
  content: "";
  position: absolute;
  top: -14%;
  right: -22%;
  width: min(460px, 70vw);
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle at 40% 40%, rgba(47, 230, 200, 0.15), transparent 66%);
  pointer-events: none;
}

.page-contact .co-hero > * {
  position: relative;
  z-index: 1;
}

.page-contact .eyebrow {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-contact .co-hero h1 {
  margin: 0 0 18px;
  max-width: 17ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(36px, 8.4vw, 72px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--cream);
}

.page-contact .co-hero__lede {
  margin: 0;
  max-width: 54ch;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.78;
  color: var(--text);
}

.page-contact .co-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 30px);
}

.page-contact .co-hero__aside {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-contact .co-stat {
  padding: 16px 18px 18px;
  border: 1px solid var(--edge);
  border-left: 4px solid var(--cyan);
  border-radius: var(--r-md);
  background: linear-gradient(150deg, var(--deep), rgba(11, 27, 43, 0.88));
}

.page-contact .co-stat--alt {
  border-left-color: var(--orange);
}

.page-contact .co-stat__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(30px, 4.4vw, 42px);
  line-height: 1;
  color: var(--cream);
  font-variant-numeric: tabular-nums;
}

.page-contact .co-stat__value span {
  margin-left: 8px;
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}

.page-contact .co-stat__label {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-dim);
}

.page-contact .co-hero__note {
  margin: 4px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--stone);
}

/* ---------- 章节骨架 ---------- */
.page-contact .co-section {
  padding: clamp(38px, 6.5vw, 76px) 0;
  border-top: 1px solid var(--co-hair);
}

.page-contact .section-head {
  max-width: 64ch;
  margin-bottom: clamp(22px, 3.6vw, 36px);
}

.page-contact .section-head__title {
  margin: 0 0 12px;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(23px, 3.4vw, 36px);
  line-height: 1.28;
  color: var(--cream);
}

.page-contact .section-head__lede {
  margin: 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--text-dim);
}

/* ---------- 合作方式卡 ---------- */
.page-contact .ways {
  display: grid;
  gap: 16px;
}

.page-contact .way-card {
  position: relative;
  padding: 22px 20px 24px 28px;
  border: 1px solid var(--edge);
  border-radius: var(--r-md);
  background: linear-gradient(160deg, rgba(19, 41, 63, 0.95), rgba(11, 27, 43, 0.9));
  transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}

.page-contact .way-card__tab {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 5px;
  border-radius: var(--r-md) 0 0 var(--r-md);
  background: var(--moss);
  transition: width 0.22s ease, box-shadow 0.22s ease;
}

.page-contact .way-card--cyan .way-card__tab { background: var(--cyan); }
.page-contact .way-card--clay .way-card__tab { background: var(--clay); }
.page-contact .way-card--gold .way-card__tab { background: var(--gold); }

.page-contact .way-card__index {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--stone);
}

.page-contact .way-card__title {
  margin: 0 0 12px;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 20px;
  line-height: 1.35;
  color: var(--cream);
}

.page-contact .way-card__fit {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--moss);
}

.page-contact .way-card--cyan .way-card__fit { color: var(--cyan); }
.page-contact .way-card--clay .way-card__fit { color: #d98a68; }
.page-contact .way-card--gold .way-card__fit { color: var(--gold); }

.page-contact .way-card__run {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-contact .way-card:hover,
.page-contact .way-card:focus-within {
  transform: translateY(-4px);
  border-color: var(--co-glow);
  box-shadow: var(--shadow-soft);
}

.page-contact .way-card:hover .way-card__tab,
.page-contact .way-card:focus-within .way-card__tab {
  width: 8px;
}

.page-contact .way-card--moss:hover .way-card__tab { box-shadow: 0 0 18px rgba(92, 122, 85, 0.9); }
.page-contact .way-card--cyan:hover .way-card__tab { box-shadow: 0 0 18px rgba(47, 230, 200, 0.8); }
.page-contact .way-card--clay:hover .way-card__tab { box-shadow: 0 0 18px rgba(182, 92, 58, 0.9); }
.page-contact .way-card--gold:hover .way-card__tab { box-shadow: 0 0 18px rgba(232, 200, 122, 0.85); }

/* ---------- 合作支持 ---------- */
.page-contact .gains {
  display: grid;
  gap: 22px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .gain-item {
  padding-top: 16px;
  border-top: 1px solid var(--co-hair);
}

.page-contact .gain-item__title {
  margin: 0 0 8px;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 17px;
  line-height: 1.45;
  color: var(--cream);
}

.page-contact .gain-item__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-dim);
}

/* ---------- 流程带 ---------- */
.page-contact .process {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--edge);
  border-radius: var(--r-lg);
  background: linear-gradient(165deg, var(--deep), var(--night));
  padding: clamp(24px, 4.4vw, 48px) clamp(18px, 3.6vw, 44px);
}

.page-contact .process__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.24;
  pointer-events: none;
}

.page-contact .steps {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .step {
  position: relative;
  padding: 18px 18px 20px;
  border: 1px solid rgba(38, 64, 90, 0.9);
  border-radius: var(--r-md);
  background: rgba(11, 27, 43, 0.66);
  transition: background 0.22s ease, border-color 0.22s ease, transform 0.22s ease;
}

.page-contact .step:hover {
  transform: translateY(-3px);
  border-color: var(--co-glow);
  background: rgba(11, 27, 43, 0.9);
}

.page-contact .step__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  margin-bottom: 12px;
  border-radius: var(--r-pill);
  background: rgba(47, 230, 200, 0.12);
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--cyan);
}

.page-contact .step__title {
  margin: 0 0 8px;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 17px;
  color: var(--cream);
}

.page-contact .step__text {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--text-dim);
}

.page-contact .step__hint {
  margin: 0;
  padding-left: 10px;
  border-left: 2px solid rgba(38, 64, 90, 0.95);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--stone);
  transition: border-color 0.22s ease, color 0.22s ease;
}

.page-contact .step:hover .step__hint {
  border-left-color: var(--cyan);
  color: var(--text-dim);
}

/* ---------- 对接准备 ---------- */
.page-contact .prep {
  display: grid;
  gap: 16px;
}

.page-contact .prep__item {
  padding: 16px 18px;
  border: 1px solid var(--co-hair);
  border-radius: var(--r-md);
  background: rgba(19, 41, 63, 0.5);
}

.page-contact .prep__idx {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--clay);
}

.page-contact .prep__title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 600;
  color: var(--cream);
}

.page-contact .prep__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--text-dim);
}

/* ---------- 问答 ---------- */
.page-contact .disclosure-group {
  border-top: 1px solid var(--co-hair);
}

.page-contact .disclosure {
  position: relative;
  padding-left: 16px;
  border-bottom: 1px solid var(--co-hair);
}

.page-contact .disclosure::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  bottom: 16px;
  width: 3px;
  border-radius: 2px;
  background: rgba(38, 64, 90, 0.95);
  transition: background 0.2s ease, box-shadow 0.2s ease;
}

.page-contact .disclosure[data-open="true"]::before {
  background: var(--cyan);
  box-shadow: 0 0 14px rgba(47, 230, 200, 0.55);
}

.page-contact .disclosure__trigger {
  width: 100%;
  padding: 18px 34px 18px 0;
  border: 0;
  background: none;
  text-align: left;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 17px;
  line-height: 1.5;
  color: var(--cream);
  cursor: pointer;
}

.page-contact .disclosure__trigger:hover {
  color: var(--cyan);
}

.page-contact .disclosure__panel {
  padding: 0 0 20px;
}

.page-contact .disclosure__panel p {
  margin: 0;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-contact .co-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: clamp(22px, 3.4vw, 32px);
}

.page-contact .co-links__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--stone);
}

.page-contact .co-links .chip {
  text-decoration: none;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.page-contact .co-links .chip:hover {
  transform: translateY(-2px);
  border-color: var(--cyan);
}

/* ---------- 联系渠道 ---------- */
.page-contact .channels {
  display: grid;
  overflow: hidden;
  border: 1px solid var(--edge);
  border-radius: var(--r-lg);
  background: linear-gradient(150deg, var(--deep), #0e2135 68%, var(--night));
}

.page-contact .channels__body {
  padding: clamp(22px, 3.8vw, 44px);
}

.page-contact .contact-list {
  display: grid;
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .contact-item {
  display: grid;
  gap: 8px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(38, 64, 90, 0.7);
}

.page-contact .contact-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--stone);
}

.page-contact .contact-value {
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.6;
  color: var(--cream);
  word-break: break-word;
}

.page-contact .copy-btn {
  justify-self: start;
  padding: 8px 18px;
  border: 1px solid rgba(47, 230, 200, 0.5);
  border-radius: var(--r-pill);
  background: transparent;
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--cyan);
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.page-contact .copy-btn:hover {
  background: rgba(47, 230, 200, 0.12);
  border-color: var(--cyan);
}

.page-contact .copy-btn[data-copied] {
  background: rgba(47, 230, 200, 0.18);
  border-color: var(--cyan);
  color: var(--cream);
}

.page-contact .contact-note {
  margin: 20px 0 0;
  max-width: 60ch;
  font-size: 14px;
  line-height: 1.78;
  color: var(--text-dim);
}

.page-contact .channels__media {
  position: relative;
  min-height: 220px;
}

.page-contact .channels__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.72;
}

/* ---------- 收尾 ---------- */
.page-contact .co-rail {
  height: 20px;
  margin-top: clamp(28px, 5vw, 56px);
  border-bottom: 1px solid rgba(47, 230, 200, 0.32);
  background-image: repeating-linear-gradient(90deg, var(--edge) 0 1px, transparent 1px 16px);
  background-repeat: repeat-x;
  background-size: 16px 12px;
}

.page-contact .to-top {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 20px;
  padding: 10px 20px;
  border: 1px solid var(--edge);
  border-radius: var(--r-pill);
  background: transparent;
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--text-dim);
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-contact .to-top:hover {
  color: var(--cyan);
  border-color: var(--cyan);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-contact .ways {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .gains {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px 28px;
  }

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

@media (min-width: 880px) {
  .page-contact .co-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
    gap: clamp(32px, 4vw, 56px);
  }

  .page-contact .co-hero__aside {
    padding-bottom: 6px;
  }

  .page-contact .steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
  }

  .page-contact .step:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 36px;
    right: -13px;
    width: 24px;
    height: 2px;
    border-radius: 2px;
    background: linear-gradient(90deg, rgba(47, 230, 200, 0.75), transparent);
    transform: rotate(-8deg);
  }

  .page-contact .channels {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }
}

@media (min-width: 1100px) {
  .page-contact .ways {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

@media (prefers-reduced-motion: reduce) {
  .page-contact .way-card,
  .page-contact .step,
  .page-contact .way-card__tab,
  .page-contact .step__hint,
  .page-contact .co-links .chip {
    transition: none;
  }

  .page-contact .way-card:hover,
  .page-contact .way-card:focus-within,
  .page-contact .step:hover,
  .page-contact .co-links .chip:hover {
    transform: none;
  }
}