.page-products {
  --prod-gutter: 18px;
  --prod-hair: rgba(154, 170, 185, 0.22);
  --prod-box: rgba(224, 179, 107, 0.32);
  position: relative;
  overflow-x: hidden;
}

.page-products .shell {
  padding-inline: var(--prod-gutter);
}

/* ---------- 首屏 ---------- */
.page-products .prod-hero {
  position: relative;
  padding: 26px 0 46px;
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(192, 138, 62, 0.16) 0%, rgba(6, 19, 31, 0) 58%),
    radial-gradient(90% 80% at 4% 100%, rgba(63, 154, 158, 0.14) 0%, rgba(6, 19, 31, 0) 60%),
    var(--ink-900);
}

.page-products .prod-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

.page-products .prod-hero__eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--copper-300);
  border: 1px solid var(--hair-strong);
  border-radius: var(--radius);
  padding: 6px 12px;
  margin-bottom: 18px;
}

.page-products .prod-hero__title {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(30px, 6.4vw, 54px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  margin: 0 0 18px;
  max-width: 20ch;
}

.page-products .prod-hero__lede {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.78;
  color: var(--text-muted);
  margin: 0 0 26px;
  max-width: 36ch;
}

.page-products .prod-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 30px;
}

.page-products .prod-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--prod-hair);
  border: 1px solid var(--prod-hair);
  margin: 0;
}

.page-products .prod-hero__fact {
  background: var(--ink-800);
  padding: 12px 14px;
}

.page-products .prod-hero__fact dt {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.page-products .prod-hero__fact dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 17px;
  letter-spacing: 0.06em;
  color: var(--copper-300);
}

.page-products .prod-hero__figure {
  margin: 0;
}

/* ---------- 服务线 ---------- */
.page-products .prod-lines {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-products .prod-line {
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.page-products .prod-line:hover {
  transform: translateY(-3px);
}

.page-products .prod-line__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.page-products .prod-line__num {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 300;
  letter-spacing: 0.08em;
  color: var(--copper-300);
}

.page-products .prod-line--celadon .prod-line__num {
  color: var(--celadon-500);
}

.page-products .prod-line--cinnabar .prod-line__num {
  color: var(--cinnabar-600);
}

.page-products .prod-line .card__title {
  font-size: 19px;
  line-height: 1.45;
  margin: 0;
}

.page-products .prod-line__spec {
  margin: 4px 0 0;
  border-top: 1px solid var(--prod-hair);
  padding-top: 12px;
}

.page-products .prod-line__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  font-size: 13px;
  padding: 5px 0;
}

.page-products .prod-line__row dt {
  color: var(--text-muted);
}

.page-products .prod-line__row dd {
  margin: 0;
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
  color: var(--text-primary);
}

.page-products .prod-line__copy {
  align-self: flex-start;
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  background: transparent;
  border: 1px solid var(--prod-hair);
  border-radius: var(--radius);
  padding: 7px 12px;
  cursor: pointer;
  transition: color 160ms ease, border-color 160ms ease, background-color 160ms ease;
}

.page-products .prod-line__copy:hover {
  color: var(--copper-300);
  border-color: var(--prod-box);
}

.page-products .prod-line__copy:focus-visible {
  outline: 2px solid var(--focus-500);
  outline-offset: 2px;
}

.page-products .prod-line__copy[data-copy-state="done"] {
  color: var(--celadon-500);
  border-color: var(--celadon-500);
}

.page-products .prod-lines__foot {
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--text-muted);
}

/* ---------- 档位 ---------- */
.page-products .prod-tiers__top {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  margin-bottom: 28px;
}

.page-products .prod-tiers__figure {
  margin: 0;
}

.page-products .prod-tiers__stair {
  border: 1px solid var(--prod-hair);
  background: var(--ink-800);
  padding: 14px;
}

.page-products .prod-stair {
  display: block;
  width: 100%;
  height: auto;
}

.page-products .prod-tier-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--prod-hair);
  border: 1px solid var(--prod-hair);
}

.page-products .prod-tier {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 14px;
  align-items: start;
  background: var(--ink-800);
  padding: 18px 16px;
}

.page-products .prod-tier__num {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 300;
  letter-spacing: 0.08em;
  color: var(--copper-500);
  line-height: 1.2;
}

.page-products .prod-tier__body h3 {
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 800;
  color: var(--text-primary);
  margin: 0 0 8px;
}

.page-products .prod-tier__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-muted);
}

.page-products .prod-tiers__aside {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* ---------- 矩阵 ---------- */
.page-products .prod-matrix__figure {
  margin: 0 0 26px;
}

.page-products .prod-matrix__scroll {
  overflow-x: auto;
  border: 1px solid var(--prod-hair);
  background: var(--ink-800);
}

.page-products .prod-matrix__scroll:focus-visible {
  outline: 2px solid var(--focus-500);
  outline-offset: 2px;
}

.page-products .prod-matrix {
  min-width: 620px;
  display: grid;
  gap: 1px;
  background: var(--prod-hair);
}

.page-products .prod-matrix__head,
.page-products .prod-matrix__row {
  display: grid;
  grid-template-columns: 150px repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--prod-hair);
}

.page-products .prod-matrix__corner,
.page-products .prod-matrix__col,
.page-products .prod-matrix__rowhead,
.page-products .prod-matrix__cell {
  background: var(--ink-900);
  padding: 14px 12px;
  font-size: 13px;
  line-height: 1.5;
}

.page-products .prod-matrix__corner {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  text-transform: uppercase;
}

.page-products .prod-matrix__col {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 13px;
  color: var(--text-primary);
}

.page-products .prod-matrix__col .num,
.page-products .prod-matrix__rowhead .num {
  font-family: var(--font-mono);
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--copper-300);
  margin-right: 4px;
}

.page-products .prod-matrix__rowhead {
  font-family: var(--font-heading);
  font-weight: 800;
  color: var(--text-primary);
}

.page-products .prod-matrix__cell {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
}

.page-products .prod-matrix__cell--on {
  color: var(--copper-300);
}

.page-products .prod-matrix__mark {
  font-size: 10px;
  line-height: 1;
}

.page-products .prod-matrix__notes {
  margin-top: 22px;
}

.page-products .prod-matrix__note {
  border-top: 3px solid var(--copper-500);
  padding: 14px 0 0;
}

.page-products .prod-matrix__note h3 {
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 800;
  color: var(--text-primary);
  margin: 0 0 8px;
}

.page-products .prod-matrix__note p {
  margin: 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--text-muted);
}

.page-products .prod-matrix__foot {
  margin: 24px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--text-muted);
}

/* ---------- 路径 ---------- */
.page-products .prod-paths__figure {
  margin: 0 0 26px;
}

.page-products .prod-paths {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--prod-hair);
  border: 1px solid var(--prod-hair);
}

.page-products .prod-path {
  background: var(--ink-800);
  padding: 22px 18px;
  position: relative;
}

.page-products .prod-path::before {
  content: "";
  position: absolute;
  left: 18px;
  top: 0;
  width: 38px;
  height: 3px;
  background: var(--copper-500);
}

.page-products .prod-path__step {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--copper-300);
  margin: 12px 0 10px;
}

.page-products .prod-path__title {
  font-family: var(--font-heading);
  font-size: 19px;
  font-weight: 800;
  color: var(--text-primary);
  margin: 0 0 12px;
}

.page-products .prod-path p {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--text-muted);
}

.page-products .prod-path__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--celadon-500);
}

.page-products .prod-paths__cta,
.page-products .prod-advice__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

/* ---------- 支持 ---------- */
.page-products .prod-support__grid {
  align-items: start;
}

.page-products .prod-support__panel {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.page-products .prod-support__figure {
  margin: 0;
}

.page-products .prod-support__timeline {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--prod-hair);
  border: 1px solid var(--prod-hair);
}

.page-products .prod-support__slot {
  background: var(--ink-800);
  padding: 20px 18px;
  border-left: 3px solid var(--copper-500);
}

.page-products .prod-support__slot--live {
  border-left-color: var(--celadon-500);
}

.page-products .prod-support__slot-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.page-products .prod-support__slot h3 {
  font-family: var(--font-heading);
  font-size: 17px;
  font-weight: 800;
  color: var(--text-primary);
  margin: 0 0 10px;
}

.page-products .prod-support__slot p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--text-muted);
}

.page-products .prod-support__aside {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* ---------- 建议 ---------- */
.page-products .prod-advice__grid {
  align-items: start;
}

.page-products .prod-advice__list {
  display: grid;
  gap: 1px;
  background: var(--prod-hair);
  border: 1px solid var(--prod-hair);
}

.page-products .prod-advice {
  background: var(--ink-800);
  padding: 22px 18px;
}

.page-products .prod-advice__num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.page-products .prod-advice__title {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 800;
  line-height: 1.45;
  color: var(--text-primary);
  margin: 0 0 12px;
}

.page-products .prod-advice p {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--text-muted);
}

.page-products .prod-advice__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--copper-300);
}

.page-products .prod-advice__aside {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page-products .prod-advice__frame {
  padding: 20px 18px;
}

.page-products .prod-advice__frame-title {
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 800;
  color: var(--text-primary);
  margin: 0 0 14px;
}

.page-products .prod-advice__frame-list {
  margin: 0;
  padding: 0 0 0 18px;
  font-size: 13px;
  line-height: 1.85;
  color: var(--text-muted);
}

.page-products .prod-advice__frame-list li {
  margin-bottom: 8px;
}

.page-products .prod-advice__frame-list li:last-child {
  margin-bottom: 0;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-products {
    --prod-gutter: 28px;
  }

  .page-products .prod-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-products .prod-lines {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-products .prod-paths {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-products .prod-support__timeline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-products .prod-hero {
    padding: 44px 0 64px;
  }

  .page-products .prod-hero__grid {
    grid-template-columns: 1.02fr 1fr;
    gap: 52px;
    align-items: end;
  }

  .page-products .prod-tiers__top {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 34px;
    align-items: stretch;
  }

  .page-products .prod-tiers__stair {
    display: flex;
    align-items: center;
  }
}

@media (min-width: 1200px) {
  .page-products {
    --prod-gutter: 40px;
  }

  .page-products .prod-hero {
    padding: 56px 0 80px;
  }

  .page-products .prod-lines {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-products .prod-tiers__body {
    grid-template-columns: minmax(0, 7fr) minmax(0, 3fr);
    gap: 40px;
  }

  .page-products .prod-matrix__notes {
    gap: 30px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .prod-line,
  .page-products .prod-line__copy {
    transition: none;
  }

  .page-products .prod-line:hover {
    transform: none;
  }
}