.page-products {
  --pdp-gap: clamp(18px, 3vw, 30px);
  --pdp-body: #33415c;
  --pdp-soft-white: rgba(247, 250, 255, 0.78);
  --pdp-soft-white-2: rgba(247, 250, 255, 0.68);
}

/* ---------- 首屏 ---------- */
.page-products .pdp-hero {
  padding-block: clamp(26px, 6vw, 68px);
  overflow: hidden;
}

.page-products .hero-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--steel);
  margin-bottom: clamp(20px, 4vw, 38px);
}

.page-products .hero-crumb a {
  color: var(--cyan);
  text-decoration: none;
}

.page-products .hero-crumb a:hover {
  text-decoration: underline;
}

.page-products .pdp-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 5vw, 56px);
  align-items: center;
}

.page-products .pdp-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 8vw, 46px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--near-white);
  margin: 12px 0 16px;
}

.page-products .pdp-hero .lede {
  color: var(--pdp-soft-white);
  font-size: 16px;
  line-height: 1.78;
  margin: 0;
}

.page-products .pdp-hero__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin: clamp(22px, 4vw, 34px) 0;
}

.page-products .pdp-stat {
  padding: 13px 15px;
  border: 1px solid var(--line-dark);
  border-left: 2px solid var(--cyan);
  border-radius: var(--r-sm);
  background: var(--cyan-soft);
}

.page-products .pdp-stat__v {
  display: block;
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 600;
  color: var(--near-white);
}

.page-products .pdp-stat__l {
  display: block;
  margin-top: 5px;
  font-size: 12px;
  line-height: 1.55;
  color: var(--steel);
}

.page-products .pdp-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-products .pdp-hero__media {
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--line-dark);
  background: linear-gradient(180deg, var(--cobalt), var(--navy));
  box-shadow: var(--shadow);
}

.page-products .pdp-hero__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 4;
  object-fit: cover;
}

/* ---------- 章节与轨道 ---------- */
.page-products .chapter {
  margin-bottom: clamp(22px, 3.6vw, 34px);
}

.page-products .chapter__title {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.12;
  font-size: clamp(25px, 5.6vw, 40px);
  margin: 4px 0 12px;
}

.page-products .section--dark .chapter__title,
.page-products .section--cobalt .chapter__title {
  color: var(--near-white);
}

.page-products .chapter .prose {
  margin: 0;
  max-width: 44ch;
  font-size: 15.5px;
  line-height: 1.78;
}

.page-products .section--dark .chapter .prose,
.page-products .section--cobalt .chapter .prose {
  color: var(--pdp-soft-white);
}

.page-products .pdp-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pdp-gap);
}

.page-products .pdp-rail {
  display: none;
}

/* ---------- 步骤路径 ---------- */
.page-products .step-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-products .step {
  position: relative;
  padding: 20px 22px 20px 66px;
  background: var(--near-white);
  border: 1px solid var(--line-light);
  border-radius: var(--r-md);
  transition: border-color 0.24s var(--ease), box-shadow 0.24s var(--ease);
}

.page-products .step:target {
  border-color: var(--signal);
  box-shadow: 0 0 0 3px var(--signal-soft);
}

.page-products .step__no {
  position: absolute;
  left: 20px;
  top: 20px;
  width: 30px;
  height: 30px;
  display: inline-grid;
  place-items: center;
  border-radius: var(--r-pill);
  background: var(--cyan);
  color: var(--navy);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
}

.page-products .step:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 34px;
  bottom: -14px;
  width: 2px;
  height: 14px;
  background: linear-gradient(180deg, var(--cyan), rgba(51, 225, 210, 0.12));
}

.page-products .step__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.page-products .step__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--pdp-body);
}

.page-products .callout {
  margin-top: clamp(22px, 3.4vw, 32px);
  padding: clamp(20px, 3vw, 28px);
  border-radius: var(--r-lg);
  background: linear-gradient(150deg, var(--cobalt), var(--navy));
  border: 1px solid var(--line-dark);
  display: grid;
  gap: 18px;
  justify-items: start;
}

.page-products .callout--light {
  background: linear-gradient(150deg, var(--mist), #ffffff);
  border-color: var(--line-light);
}

.page-products .callout__text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  max-width: 58ch;
  color: var(--pdp-soft-white);
}

.page-products .callout--light .callout__text {
  color: var(--pdp-body);
}

.page-products .callout__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-products .btn--dark {
  color: var(--ink);
  border-color: rgba(15, 23, 37, 0.24);
}

/* ---------- 适配规格 ---------- */
.page-products .spec-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}

.page-products .spec {
  padding: 18px 20px;
  border: 1px solid var(--line-dark);
  border-radius: var(--r-md);
  background: rgba(18, 41, 79, 0.72);
}

.page-products .spec__k {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-products .spec__v {
  margin: 9px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 22px;
  color: var(--near-white);
}

.page-products .spec__d {
  margin: 7px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--pdp-soft-white-2);
}

.page-products .pdp-media {
  margin: clamp(24px, 4vw, 40px) 0 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--line-dark);
}

.page-products .pdp-media--tight {
  margin-top: 24px;
}

.page-products .pdp-media--band {
  margin-top: 0;
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-products .pdp-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-products .pdp-media figcaption {
  padding: 12px 16px;
  font-size: 13px;
  line-height: 1.66;
  color: var(--pdp-soft-white-2);
  background: var(--navy);
  border-top: 1px solid var(--line-dark);
}

/* ---------- 订阅 ---------- */
.page-products .sub-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-products .sub-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px;
  border-radius: var(--r-lg);
  background: var(--near-white);
  border: 1px solid var(--line-light);
}

.page-products .sub-card__tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--struct);
}

.page-products .sub-card h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 22px;
  color: var(--ink);
}

.page-products .sub-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.74;
  color: var(--pdp-body);
}

.page-products .sub-toggle-row {
  display: grid;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 28px);
}

.page-products .sub-toggle {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  border-radius: var(--r-md);
  background: var(--mist);
  border: 1px solid var(--line-light);
}

.page-products .sub-toggle__name {
  flex: 1 1 auto;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}

.page-products .sub-toggle__state {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--steel);
  white-space: nowrap;
}

.page-products .switch {
  position: relative;
  flex: none;
  width: 50px;
  height: 28px;
  border-radius: var(--r-pill);
  background: rgba(107, 122, 147, 0.35);
}

.page-products .switch::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--near-white);
  transition: transform 0.24s var(--ease);
}

.page-products .switch--on {
  background: var(--cyan);
}

.page-products .switch--on::after {
  transform: translateX(22px);
}

/* ---------- 会员等级 ---------- */
.page-products .tier-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: clamp(18px, 3vw, 26px);
}

.page-products .tier-count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--pdp-soft-white-2);
}

.page-products .tier-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-products .tier-card {
  padding: clamp(22px, 3vw, 30px);
  border-radius: var(--r-lg);
  border: 1px solid var(--line-dark);
  background: linear-gradient(158deg, rgba(18, 41, 79, 0.94), rgba(10, 23, 48, 0.94));
}

.page-products .tier-card__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.page-products .tier-card__name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 5vw, 34px);
  color: var(--near-white);
}

.page-products .tier-card__badge {
  padding: 4px 12px;
  border-radius: var(--r-pill);
  background: var(--cyan);
  color: var(--navy);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.page-products .tier-card[data-tags="tower"] .tier-card__badge {
  background: var(--struct);
  color: var(--near-white);
}

.page-products .tier-card[data-tags="spire"] .tier-card__badge {
  background: var(--signal);
  color: var(--near-white);
}

.page-products .tier-card__desc {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.74;
  color: var(--pdp-soft-white);
  max-width: 46ch;
}

.page-products .tier-perks {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products .tier-perks li {
  position: relative;
  padding-left: 26px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--pdp-soft-white);
}

.page-products .tier-perks li::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
}

.page-products .tier-card[data-tags="spire"] .tier-perks li::before {
  background: var(--signal);
}

/* ---------- 数据导出 ---------- */
.page-products .export-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 32px);
  align-items: center;
}

.page-products .export-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-products .export-item {
  padding: 16px 18px;
  border-radius: var(--r-md);
  background: var(--near-white);
  border: 1px solid var(--line-light);
  border-left: 3px solid var(--struct);
}

.page-products .export-item h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  color: var(--ink);
}

.page-products .export-item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--pdp-body);
}

.page-products .export-grid .pdp-media {
  margin-top: 0;
  border-color: var(--line-light);
}

/* ---------- 排障 ---------- */
.page-products .fix-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-products .fix-item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 16px 18px;
  border-radius: var(--r-md);
  background: var(--mist);
  border: 1px solid var(--line-light);
}

.page-products .fix-item__no {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: var(--r-pill);
  background: var(--navy);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
}

.page-products .fix-item p {
  margin: 3px 0 0;
  font-size: 15px;
  line-height: 1.74;
  color: var(--pdp-body);
}

/* ---------- 结尾 ---------- */
.page-products .pdp-cta {
  padding-block: clamp(32px, 6vw, 68px);
}

.page-products .pdp-cta__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  align-items: center;
}

.page-products .pdp-cta .display-2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.12;
  font-size: clamp(24px, 5.4vw, 38px);
  color: var(--near-white);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-products .sub-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 780px) {
  .page-products .sub-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-products .step-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-products .step {
    padding: 24px 22px;
  }

  .page-products .step__no {
    position: static;
    margin-bottom: 14px;
  }

  .page-products .step:not(:last-child)::after {
    left: auto;
    right: -18px;
    top: 38px;
    bottom: auto;
    width: 18px;
    height: 2px;
    background: linear-gradient(90deg, var(--cyan), rgba(51, 225, 210, 0.12));
  }

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

  .page-products .pdp-cta__inner {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
  }

  .page-products .pdp-cta__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 900px) {
  .page-products .pdp-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  }

  .page-products .pdp-hero h1 {
    font-size: clamp(38px, 4.6vw, 62px);
  }

  .page-products .pdp-hero__media img {
    aspect-ratio: 4 / 5;
  }

  .page-products .export-grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  }
}

@media (min-width: 980px) {
  .page-products .pdp-split {
    grid-template-columns: 58px minmax(0, 1fr);
    gap: clamp(22px, 3vw, 40px);
  }

  .page-products .pdp-rail {
    display: flex;
    flex-direction: column;
    gap: 14px;
    position: sticky;
    top: 118px;
    align-self: start;
    padding-top: 6px;
  }

  .page-products .pdp-rail::before {
    content: "";
    position: absolute;
    left: 19px;
    top: 52px;
    bottom: -14px;
    width: 1px;
    background: var(--line-light);
    z-index: -1;
  }

  .page-products .pdp-rail__item {
    display: grid;
    place-items: center;
    width: 40px;
    height: 40px;
    border-radius: var(--r-pill);
    border: 1px solid var(--line-light);
    background: var(--near-white);
    color: var(--steel);
    text-decoration: none;
    font-family: var(--font-mono);
    font-size: 12px;
    transition: color 0.24s var(--ease), background 0.24s var(--ease), border-color 0.24s var(--ease);
  }

  .page-products .pdp-rail__item:hover,
  .page-products .pdp-rail__item.is-active {
    color: var(--navy);
    background: var(--cyan);
    border-color: var(--cyan);
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-products .step,
  .page-products .switch::after,
  .page-products .pdp-rail__item {
    transition: none;
  }
}