.page-products {
  --pd-shot-border: rgba(201, 191, 174, .34);
  --pd-on-dark-rule: rgba(201, 191, 174, .28);
  --pd-on-dark-text: rgba(244, 239, 230, .78);
  --pd-on-dark-dim: rgba(244, 239, 230, .56);
}

/* ---------- 首屏 ---------- */
.page-products .pd-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--paper);
  padding: clamp(20px, 4vw, 40px) 0 clamp(64px, 9vw, 104px);
}

.page-products .pd-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(115deg, rgba(63, 214, 200, .07) 0 1px, transparent 1px 48px);
  pointer-events: none;
}

.page-products .pd-hero::after {
  content: "";
  position: absolute;
  top: -18%;
  right: -12%;
  width: 44vw;
  height: 44vw;
  border: 1px solid rgba(180, 31, 46, .35);
  border-radius: 50%;
  pointer-events: none;
}

.page-products .pd-hero .shell {
  position: relative;
  z-index: 1;
}

.page-products .pd-breadcrumb {
  margin-bottom: clamp(28px, 5vw, 56px);
}

.page-products .pd-breadcrumb a,
.page-products .pd-breadcrumb li {
  color: var(--pd-on-dark-dim);
}

.page-products .pd-breadcrumb a:hover {
  color: var(--cyan);
}

.page-products .pd-breadcrumb li[aria-current="page"] {
  color: var(--paper);
}

.page-products .pd-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 5vw, 56px);
  align-items: center;
}

.page-products .pd-eyebrow {
  color: var(--cyan);
  letter-spacing: .12em;
  margin-bottom: 14px;
}

.page-products .pd-hero h1 {
  font-size: clamp(38px, 7.4vw, 88px);
  font-weight: 900;
  line-height: .98;
  letter-spacing: -.02em;
  margin: 0 0 clamp(18px, 2.6vw, 28px);
}

.page-products .pd-lede {
  max-width: 62ch;
  color: var(--pd-on-dark-text);
  font-size: clamp(16px, 1.7vw, 18px);
  line-height: 1.85;
  margin: 0;
}

.page-products .pd-hero-visual {
  margin: 0;
}

.page-products .pd-shot {
  position: relative;
  border: .5px solid var(--pd-shot-border);
  background: var(--panel);
  overflow: hidden;
  box-shadow: 0 14px 38px rgba(0, 0, 0, .38);
}

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

.page-products .pd-shot::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(115deg, rgba(63, 214, 200, .05) 0 1px, transparent 1px 30px);
  pointer-events: none;
}

.page-products .pd-shot--flat {
  box-shadow: var(--shadow-2);
}

.page-products .pd-shot-note {
  margin-top: 10px;
  font-size: 13px;
  color: var(--pd-on-dark-dim);
  font-family: var(--font-mono);
}

.page-products .pd-hero-facts {
  list-style: none;
  margin: clamp(40px, 6vw, 68px) 0 0;
  padding: 0;
  border-top: .5px solid var(--pd-on-dark-rule);
}

.page-products .pd-hero-facts li {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 16px;
  align-items: baseline;
  padding: 16px 0;
  border-bottom: .5px solid var(--pd-on-dark-rule);
}

.page-products .pd-fact-num {
  font-size: clamp(26px, 3.4vw, 38px);
  font-weight: 700;
  color: var(--cyan);
  line-height: 1;
}

.page-products .pd-fact-label {
  font-size: 14px;
  line-height: 1.7;
  color: var(--pd-on-dark-text);
}

.page-products .pd-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(28px, 4vw, 44px);
}

/* ---------- 章节头 ---------- */
.page-products .pd-sec-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-bottom: clamp(34px, 5vw, 56px);
}

.page-products .pd-sec-index {
  font-size: clamp(40px, 6vw, 68px);
  font-weight: 900;
  line-height: 1;
  color: var(--milan);
  letter-spacing: -.03em;
}

.page-products .pd-sec-copy h2 {
  margin: 0 0 14px;
}

.page-products .pd-sec-copy .prose {
  max-width: 62ch;
  margin: 0;
}

/* ---------- 功能清单 ---------- */
.page-products .pd-feature-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: .5px solid var(--rule);
}

.page-products .pd-feature-item {
  display: grid;
  grid-template-columns: 44px 1fr;
  grid-template-areas:
    "num  title"
    ".    text";
  gap: 6px 16px;
  padding: 24px 0;
  border-bottom: .5px solid var(--rule);
}

.page-products .pd-feature-num {
  grid-area: num;
  font-size: 15px;
  font-weight: 700;
  color: var(--milan);
  padding-top: 4px;
}

.page-products .pd-feature-glyph {
  display: none;
}

.page-products .pd-feature-item h3 {
  grid-area: title;
  margin: 0;
  font-size: clamp(19px, 2.2vw, 24px);
  font-weight: 800;
  letter-spacing: -.01em;
}

.page-products .pd-feature-item p {
  grid-area: text;
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 图文交替 ---------- */
.page-products .pd-split-section + .pd-split-section {
  padding-top: 0;
}

.page-products .pd-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 48px);
  align-items: start;
}

.page-products .pd-split-index {
  display: block;
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--ember);
  margin-bottom: 12px;
}

.page-products .pd-split-copy h2 {
  font-size: clamp(24px, 3.4vw, 36px);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -.02em;
  margin: 0 0 16px;
}

.page-products .pd-split-copy .prose {
  max-width: 62ch;
  margin: 0 0 16px;
}

.page-products .pd-split-visual {
  margin: 0;
}

.page-products .pd-split-visual .pd-shot-note {
  color: var(--muted);
}

.page-products .pd-check {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  border-top: .5px solid var(--rule);
}

.page-products .pd-check li {
  position: relative;
  padding: 12px 0 12px 22px;
  font-size: 14px;
  line-height: 1.7;
  border-bottom: .5px solid var(--rule);
}

.page-products .pd-check li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 20px;
  width: 9px;
  height: 1px;
  background: var(--milan);
}

/* ---------- 深色数据带 ---------- */
.page-products .pd-band-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-bottom: clamp(32px, 4.6vw, 52px);
}

.page-products .pd-band-head .pd-sec-index {
  color: var(--cyan);
}

.page-products .pd-band-head .section-title {
  color: var(--paper);
  margin: 0 0 14px;
}

.page-products .pd-band-lede {
  max-width: 62ch;
  margin: 0;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.85;
  color: var(--pd-on-dark-text);
}

/* ---------- 转会动态流 ---------- */
.page-products .pd-stream {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: .5px solid var(--pd-on-dark-rule);
}

.page-products .pd-stream-item {
  padding: 22px 0;
  border-bottom: .5px solid var(--pd-on-dark-rule);
}

.page-products .pd-stream-time {
  display: block;
  margin-bottom: 8px;
  font-size: 12px;
  color: var(--gold);
  letter-spacing: .04em;
}

.page-products .pd-stream-item h3 {
  margin: 0 0 8px;
  font-size: clamp(18px, 2.1vw, 22px);
  font-weight: 800;
  color: var(--paper);
}

.page-products .pd-stream-item p {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--pd-on-dark-text);
}

.page-products .pd-band-foot {
  display: grid;
  gap: 20px;
  margin-top: clamp(30px, 4vw, 44px);
}

.page-products .pd-band-foot p {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--pd-on-dark-text);
}

.page-products .pd-band-btn {
  justify-self: start;
  color: var(--paper);
  border-color: var(--pd-on-dark-rule);
}

/* ---------- 赛季简报 ---------- */
.page-products .pd-brief-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4.4vw, 52px);
  align-items: start;
}

.page-products .pd-brief-visual {
  margin: 0;
}

.page-products .pd-brief-visual .pd-shot-note {
  color: var(--muted);
}

.page-products .pd-brief-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: .5px solid var(--rule);
  counter-reset: brief;
}

.page-products .pd-brief-list li {
  padding: 20px 0;
  border-bottom: .5px solid var(--rule);
}

.page-products .pd-brief-list h3 {
  margin: 0 0 8px;
  font-size: clamp(17px, 2vw, 20px);
  font-weight: 800;
}

.page-products .pd-brief-list p {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 数据集 ---------- */
.page-products .pd-datasets {
  background: var(--ink);
  color: var(--paper);
}

.page-products .pd-datasets .pd-sec-head--on-dark .prose {
  color: var(--pd-on-dark-text);
}

.page-products .pd-datasets .pd-sec-index {
  color: var(--milan);
}

.page-products .pd-datasets .section-title {
  color: var(--paper);
}

.page-products .pd-dataset-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-bottom: clamp(34px, 5vw, 52px);
}

.page-products .pd-dataset-card {
  padding: 24px;
  border: .5px solid var(--pd-on-dark-rule);
  background: var(--panel);
  box-shadow: var(--shadow-1);
}

.page-products .pd-dataset-card h3 {
  margin: 0 0 12px;
  font-size: clamp(18px, 2.1vw, 22px);
  font-weight: 800;
  color: var(--paper);
}

.page-products .pd-dataset-card p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--pd-on-dark-text);
}

.page-products .pd-dataset-meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .02em;
  color: var(--cyan);
  margin: 0;
}

.page-products .pd-table-wrap {
  overflow-x: auto;
  border: .5px solid var(--pd-on-dark-rule);
}

.page-products .pd-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-products .pd-table caption {
  text-align: left;
  padding: 14px 16px;
  font-size: 13px;
  color: var(--pd-on-dark-dim);
  border-bottom: .5px solid var(--pd-on-dark-rule);
}

.page-products .pd-table th,
.page-products .pd-table td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: .5px solid var(--pd-on-dark-rule);
  vertical-align: top;
}

.page-products .pd-table thead th {
  background: var(--grass);
  color: var(--paper);
  font-weight: 700;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
}

.page-products .pd-table tbody th {
  font-weight: 700;
  color: var(--paper);
}

.page-products .pd-table td {
  font-family: var(--font-mono);
  color: var(--pd-on-dark-text);
}

.page-products .pd-dataset-visual {
  margin: clamp(30px, 4vw, 44px) 0 0;
}

.page-products .pd-dataset-visual .pd-shot-note {
  color: var(--pd-on-dark-dim);
}

/* ---------- 版本演进 ---------- */
.page-products .pd-version-rail {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 12px;
  margin-bottom: clamp(26px, 3.6vw, 40px);
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.page-products .pd-version-chip {
  flex: 0 0 auto;
  scroll-snap-align: start;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--paper);
  border-color: var(--pd-on-dark-rule);
  background: transparent;
  cursor: pointer;
}

.page-products .pd-version-chip[aria-pressed="true"] {
  background: var(--milan);
  border-color: var(--milan);
  color: #fff;
}

.page-products .pd-version-chip--current {
  color: var(--cyan);
}

.page-products .pd-version-chip--current[aria-pressed="true"] {
  color: #fff;
}

.page-products .pd-version-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-products .pd-version-card {
  padding: 22px;
  border: .5px solid var(--pd-on-dark-rule);
  background: rgba(244, 239, 230, .04);
  transition: border-color .25s var(--ease), transform .25s var(--ease);
}

.page-products .pd-version-card:hover {
  border-color: var(--milan);
  transform: translateY(-2px);
}

.page-products .pd-version-card--current {
  border-color: var(--milan);
  background: rgba(180, 31, 46, .12);
}

.page-products .pd-version-tag {
  display: inline-block;
  margin-bottom: 12px;
  padding: 3px 10px;
  border: .5px solid var(--pd-on-dark-rule);
  border-radius: var(--radius-pill);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--cyan);
}

.page-products .pd-version-card--current .pd-version-tag {
  border-color: var(--milan);
  color: var(--paper);
}

.page-products .pd-version-card h3 {
  margin: 0 0 10px;
  font-size: clamp(17px, 2vw, 20px);
  font-weight: 800;
  color: var(--paper);
}

.page-products .pd-version-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--pd-on-dark-text);
}

/* ---------- 三步开始 ---------- */
.page-products .pd-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: .5px solid var(--rule);
  counter-reset: step;
}

.page-products .pd-step {
  position: relative;
  padding: 24px 0 24px 0;
  border-bottom: .5px solid var(--rule);
}

.page-products .pd-step-num {
  display: block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--milan);
  margin-bottom: 10px;
}

.page-products .pd-step h3 {
  margin: 0 0 10px;
  font-size: clamp(18px, 2.2vw, 22px);
  font-weight: 800;
}

.page-products .pd-step p {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-products .pd-start-foot {
  margin-top: clamp(30px, 4vw, 46px);
  padding-top: 24px;
  border-top: .5px solid var(--rule);
}

.page-products .pd-start-foot p {
  margin: 0 0 20px;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.page-products .pd-start-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 桌面增强 ---------- */
@media (min-width: 860px) {
  .page-products .pd-hero-grid {
    grid-template-columns: 7fr 5fr;
    align-items: center;
  }

  .page-products .pd-shot--hero {
    transform: perspective(1500px) rotateY(-7deg) rotateX(2deg) translateY(-6px);
    transform-origin: left center;
  }

  .page-products .pd-hero-facts {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    border-bottom: .5px solid var(--pd-on-dark-rule);
  }

  .page-products .pd-hero-facts li {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 22px 26px 22px 0;
    border-bottom: 0;
    border-right: .5px solid var(--pd-on-dark-rule);
  }

  .page-products .pd-hero-facts li:last-child {
    border-right: 0;
  }

  .page-products .pd-sec-head,
  .page-products .pd-band-head {
    grid-template-columns: 120px 1fr;
    gap: 0 28px;
    align-items: start;
  }

  .page-products .pd-sec-head .pd-sec-index,
  .page-products .pd-band-head .pd-sec-index {
    position: sticky;
    top: 96px;
  }

  .page-products .pd-feature-list {
    grid-template-columns: repeat(2, 1fr);
    column-gap: clamp(32px, 5vw, 64px);
    border-bottom: .5px solid var(--rule);
  }

  .page-products .pd-feature-item {
    grid-template-columns: 48px 1fr auto;
    grid-template-areas:
      "num  title glyph"
      ".    text  text";
    border-bottom: .5px solid var(--rule);
  }

  .page-products .pd-feature-glyph {
    grid-area: glyph;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    align-self: start;
    width: 40px;
    height: 40px;
    border: .5px solid var(--rule);
    color: var(--milan);
    transition: border-color .25s var(--ease), color .25s var(--ease);
  }

  .page-products .pd-feature-item:hover .pd-feature-glyph {
    border-color: var(--milan);
    color: var(--ember);
  }

  .page-products .pd-split {
    grid-template-columns: 7fr 5fr;
    gap: clamp(36px, 5vw, 68px);
  }

  .page-products .pd-split--reverse {
    grid-template-columns: 5fr 7fr;
  }

  .page-products .pd-split--reverse .pd-split-copy {
    order: 2;
  }

  .page-products .pd-split--reverse .pd-split-visual {
    order: 1;
  }

  .page-products .pd-stream {
    grid-template-columns: repeat(3, 1fr);
    column-gap: clamp(28px, 4vw, 52px);
  }

  .page-products .pd-stream-item {
    border-bottom: 0;
    padding: 26px 0 0;
  }

  .page-products .pd-band-foot {
    grid-template-columns: 1fr auto;
    align-items: end;
  }

  .page-products .pd-brief-grid {
    grid-template-columns: 5fr 7fr;
  }

  .page-products .pd-brief-visual {
    position: sticky;
    top: 100px;
  }

  .page-products .pd-dataset-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-products .pd-version-cards {
    grid-template-columns: repeat(2, 1fr);
    column-gap: clamp(24px, 3vw, 40px);
  }

  .page-products .pd-steps {
    grid-template-columns: repeat(3, 1fr);
    column-gap: clamp(28px, 4vw, 56px);
    border-bottom: .5px solid var(--rule);
  }

  .page-products .pd-step {
    border-bottom: 0;
    padding: 28px 0 32px;
  }
}

@media (min-width: 1180px) {
  .page-products .pd-hero-grid {
    grid-template-columns: 8fr 5fr;
  }

  .page-products .pd-feature-list {
    column-gap: 84px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pd-shot--hero {
    transform: none;
  }

  .page-products .pd-version-card {
    transition: none;
  }

  .page-products .pd-version-card:hover {
    transform: none;
  }
}