.page-products {
  --pdp-gap: clamp(22px, 3.2vw, 40px);
  --pdp-band-pad: clamp(30px, 5vw, 76px);
}

/* ---------- 首屏 ---------- */
.page-products .pdp-hero {
  padding: clamp(24px, 4vw, 48px) 0 clamp(40px, 6vw, 76px);
  max-width: 62ch;
}

.page-products .pdp-hero__title {
  margin: 14px 0 22px;
  font-family: var(--font-display);
  font-size: clamp(2rem, 5.2vw, 3.6rem);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-products .pdp-hero__lede {
  margin: 0 0 clamp(26px, 4vw, 40px);
  max-width: 46ch;
  color: var(--text-dim);
}

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

.page-products .pdp-fact {
  padding: 16px 18px;
  background: var(--ink-900);
}

.page-products .pdp-fact dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  margin-bottom: 6px;
}

.page-products .pdp-fact dd {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 2.2vw, 1.35rem);
  font-weight: 700;
  color: var(--text);
}

.page-products .pdp-fact dd .xg-num {
  color: var(--lime);
}

/* ---------- 功能总览索引 ---------- */
.page-products .pdp-index {
  margin-bottom: clamp(56px, 8vw, 112px);
  padding: var(--pdp-band-pad);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(160deg, var(--ink-900) 0%, var(--panel) 100%);
  box-shadow: var(--shadow-deep);
}

.page-products .pdp-index__grid {
  display: grid;
  gap: clamp(32px, 5vw, 64px);
}

.page-products .pdp-index__note {
  margin: 12px 0 28px;
  max-width: 40ch;
  color: var(--text-dim);
}

.page-products .pdp-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products .pdp-index__item a {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: clamp(12px, 2vw, 20px);
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(8, 4, 15, 0.5);
  text-decoration: none;
  color: inherit;
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-products .pdp-index__item a:hover,
.page-products .pdp-index__item a:focus-visible {
  transform: translateY(-2px);
  border-color: var(--lime);
  background: rgba(184, 255, 63, 0.06);
}

.page-products .pdp-index__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--lime);
}

.page-products .pdp-index__body {
  display: grid;
  gap: 3px;
  min-width: 0;
}

.page-products .pdp-index__name {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
}

.page-products .pdp-index__desc {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-dim);
}

.page-products .pdp-index__tag {
  white-space: nowrap;
}

.page-products .pdp-figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-950);
  overflow: hidden;
}

.page-products .pdp-figure .xg-figure__media {
  display: block;
  line-height: 0;
}

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

.page-products .pdp-figure .xg-figure__cap {
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--text-dim);
  border-top: 1px solid var(--line);
  background: var(--ink-900);
}

.page-products .pdp-figure--index {
  align-self: start;
}

/* ---------- 横向主题带 ---------- */
.page-products .pdp-band {
  margin-bottom: clamp(56px, 8vw, 112px);
  padding: var(--pdp-band-pad);
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.page-products .pdp-band--paper {
  background: var(--paper);
  border-color: var(--paper-line);
  color: var(--text-on-paper);
}

.page-products .pdp-band--paper .xg-eyebrow,
.page-products .pdp-band--paper .pdp-band__aside,
.page-products .pdp-band--paper .pdp-band__lead {
  color: var(--text-dim-on-paper);
}

.page-products .pdp-band--paper .xg-h2,
.page-products .pdp-band--paper .xg-h3 {
  color: var(--text-on-paper);
}

.page-products .pdp-band--paper .pdp-figure {
  border-color: var(--paper-line);
  background: var(--ink-900);
}

.page-products .pdp-band--dark {
  background: linear-gradient(170deg, var(--ink-900) 0%, var(--ink-950) 100%);
  color: var(--text);
}

.page-products .pdp-band__grid {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}

.page-products .pdp-band__copy p {
  max-width: 40ch;
}

.page-products .pdp-band__lead {
  max-width: 52ch;
  color: var(--text-dim);
}

.page-products .pdp-band__aside {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid currentColor;
  border-color: rgba(61, 42, 107, 0.35);
  font-size: 14px;
  line-height: 1.8;
}

.page-products .pdp-band--paper .pdp-band__aside {
  border-top-color: var(--paper-line);
}

.page-products .pdp-band a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 步骤 ---------- */
.page-products .pdp-steps {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
  counter-reset: pdpStep;
}

.page-products .pdp-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-areas:
    "no label"
    "no note";
  gap: 4px 14px;
  padding: 14px 16px;
  border: 1px solid var(--paper-line);
  border-left: 3px solid var(--lime);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.55);
  cursor: default;
  transition: transform 0.22s var(--ease), box-shadow 0.22s var(--ease);
}

.page-products .pdp-band--dark .pdp-step {
  border-color: var(--line);
  border-left-color: var(--lime);
  background: rgba(36, 19, 68, 0.6);
}

.page-products .pdp-step:hover,
.page-products .pdp-step:focus-visible {
  transform: translateX(3px);
  box-shadow: 0 10px 26px -20px rgba(0, 0, 0, 0.9);
}

.page-products .pdp-step__no {
  grid-area: no;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--lime);
  padding-top: 2px;
}

.page-products .pdp-band--paper .pdp-step__no {
  color: #5d7a13;
}

.page-products .pdp-step__label {
  grid-area: label;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
}

.page-products .pdp-step__note {
  grid-area: note;
  font-size: 13px;
  line-height: 1.7;
  opacity: 0;
  max-height: 0;
  overflow: hidden;
  transition: opacity 0.24s var(--ease), max-height 0.24s var(--ease);
}

.page-products .pdp-step:hover .pdp-step__note,
.page-products .pdp-step:focus-visible .pdp-step__note,
.page-products .pdp-step:focus-within .pdp-step__note {
  opacity: 1;
  max-height: 6em;
}

.page-products .pdp-band--paper .pdp-step__note {
  color: var(--text-dim-on-paper);
}

.page-products .pdp-band--dark .pdp-step__note {
  color: var(--text-dim);
}

/* ---------- 版本镜像对照 ---------- */
.page-products .pdp-vs__head {
  max-width: 62ch;
  margin-bottom: clamp(26px, 4vw, 44px);
}

.page-products .pdp-vs__head .xg-h2 {
  margin: 12px 0 16px;
}

.page-products .pdp-vs {
  position: relative;
  display: grid;
  gap: 18px;
}

.page-products .pdp-vs__pane {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel);
  padding: clamp(20px, 3vw, 30px);
}

.page-products .pdp-vs__pane--beta {
  background: linear-gradient(180deg, rgba(184, 255, 63, 0.07), var(--panel) 62%);
  border-color: rgba(184, 255, 63, 0.4);
}

.page-products .pdp-vs__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin-bottom: 20px;
}

.page-products .pdp-vs__hint {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--text-dim);
}

.page-products .pdp-vs__rows {
  margin: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
}

.page-products .pdp-vs__row {
  background: var(--ink-950);
  padding: 14px 16px;
}

.page-products .pdp-vs__row dt {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  margin-bottom: 6px;
}

.page-products .pdp-vs__row dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text);
}

.page-products .pdp-vs__row.is-diff {
  box-shadow: inset 3px 0 0 var(--lime);
}

.page-products .pdp-vs__split {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  height: 22px;
}

.page-products .pdp-vs__split::before,
.page-products .pdp-vs__split::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--line);
}

.page-products .pdp-vs__grip {
  width: 34px;
  height: 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--ink-950);
  position: relative;
  margin: 0 12px;
}

.page-products .pdp-vs__grip::after {
  content: "";
  position: absolute;
  inset: 4px 10px;
  border-left: 1px solid var(--text-dim);
  border-right: 1px solid var(--text-dim);
}

.page-products .pdp-vs__foot {
  margin-top: clamp(26px, 4vw, 44px);
  display: grid;
  gap: clamp(22px, 3vw, 36px);
  align-items: start;
}

.page-products .pdp-vs__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-content: start;
}

/* ---------- 地域查询 ---------- */
.page-products .pdp-chart__grid {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}

.page-products .pdp-metrics {
  margin: 24px 0 26px;
  display: grid;
  gap: 14px;
}

.page-products .pdp-metric dt {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: #5d7a13;
  margin-bottom: 4px;
}

.page-products .pdp-metric dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-on-paper);
}

.page-products .pdp-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 6px;
}

.page-products .pdp-tab {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid var(--paper-line);
  background: rgba(255, 255, 255, 0.6);
  color: var(--text-on-paper);
  cursor: pointer;
  transition: background 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-products .pdp-tab[aria-pressed="true"] {
  background: var(--text-on-paper);
  color: var(--paper);
  border-color: var(--text-on-paper);
}

.page-products .pdp-tab:hover {
  border-color: var(--text-on-paper);
}

.page-products .pdp-figure__media--chart {
  position: relative;
  background: var(--panel);
}

.page-products .pdp-figure__media--chart img {
  opacity: 0.92;
}

.page-products .pdp-spark {
  position: absolute;
  inset: auto 4% 6% 4%;
  width: 92%;
  height: auto;
  z-index: 1;
  pointer-events: none;
}

.page-products .pdp-spark__line {
  fill: none;
  stroke: var(--lime);
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.page-products .pdp-spark__dots circle {
  fill: var(--lime);
}

.page-products .pdp-spark__dots circle.is-amber {
  fill: var(--amber);
}

/* ---------- 使用记录 ---------- */
.page-products .pdp-ledger {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
}

.page-products .pdp-ledger__item {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 16px;
  padding: 14px 16px;
  background: var(--ink-900);
}

.page-products .pdp-ledger__key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--lime);
}

.page-products .pdp-ledger__val {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text);
}

.page-products .pdp-callout {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: clamp(22px, 3vw, 32px);
  background: linear-gradient(200deg, rgba(184, 255, 63, 0.09), var(--panel) 55%);
}

.page-products .pdp-callout__title {
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  font-weight: 700;
  color: var(--text);
  margin: 0 0 18px;
}

.page-products .pdp-callout__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-products .pdp-callout__list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--text);
}

.page-products .pdp-callout__list .xg-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--lime);
  padding-top: 3px;
}

.page-products .pdp-callout__foot {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.75;
  color: var(--text-dim);
}

/* ---------- 适配与集成 ---------- */
.page-products .pdp-grid-list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 18px 24px;
}

.page-products .pdp-grid-list li {
  padding: 16px 18px;
  border: 1px solid var(--paper-line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.6);
}

.page-products .pdp-grid-list p {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-dim-on-paper);
}

.page-products .pdp-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-products .pdp-band--paper .xg-btn--ghost {
  color: var(--text-on-paper);
  border-color: var(--paper-line);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-products .pdp-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-products .pdp-vs__foot {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  }
}

@media (min-width: 900px) {
  .page-products .pdp-band__grid,
  .page-products .pdp-chart__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: center;
  }

  .page-products .pdp-band__grid--flip > :first-child {
    order: 2;
  }

  .page-products .pdp-chart__copy {
    order: 1;
  }

  .page-products .pdp-figure--chart {
    order: 2;
  }

  .page-products .pdp-index__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-products .pdp-vs {
    grid-template-columns: minmax(0, 1fr) 44px minmax(0, 1fr);
    align-items: stretch;
  }

  .page-products .pdp-vs__split {
    height: auto;
    flex-direction: column;
  }

  .page-products .pdp-vs__split::before,
  .page-products .pdp-vs__split::after {
    flex: 1;
    width: 1px;
    height: auto;
  }

  .page-products .pdp-vs__grip {
    width: 14px;
    height: 34px;
    margin: 12px 0;
  }

  .page-products .pdp-vs__grip::after {
    inset: 10px 4px;
    border-left: none;
    border-right: none;
    border-top: 1px solid var(--text-dim);
    border-bottom: 1px solid var(--text-dim);
  }
}

@media (min-width: 1100px) {
  .page-products .pdp-band,
  .page-products .pdp-index {
    display: block;
  }

  .page-products .pdp-band__copy p {
    max-width: 38ch;
  }
}

@media (max-width: 520px) {
  .page-products .pdp-index__item a {
    grid-template-columns: auto minmax(0, 1fr);
    grid-template-areas:
      "no name"
      "tag tag";
    row-gap: 10px;
  }

  .page-products .pdp-index__no { grid-area: no; }
  .page-products .pdp-index__body { grid-area: name; }
  .page-products .pdp-index__tag { grid-area: tag; justify-self: start; }

  .page-products .pdp-ledger__item {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pdp-index__item a,
  .page-products .pdp-step,
  .page-products .pdp-step__note,
  .page-products .pdp-tab {
    transition: none !important;
  }
}