.page-products {
  --pp-tilt: clamp(26px, 6vw, 72px);
  --pp-panel: #0C2419;
  padding-bottom: clamp(56px, 8vw, 104px);
}

.page-products .breadcrumb {
  margin: 22px 0 26px;
}

/* ---------- 首屏：斜切框景 ---------- */
.page-products .pp-hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(120% 90% at 88% 10%, rgba(255, 106, 26, .10) 0%, transparent 58%),
    linear-gradient(160deg, #0C2419 0%, #06120E 68%);
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline-strong);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--pp-tilt)), 0 100%);
}

.page-products .pp-hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(244, 248, 246, .04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(244, 248, 246, .04) 1px, transparent 1px);
  background-size: 72px 72px;
  pointer-events: none;
}

.page-products .pp-hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 5vw, 48px);
  padding: clamp(38px, 6vw, 74px) 0 calc(clamp(38px, 6vw, 74px) + var(--pp-tilt));
}

.page-products .pp-hero h1 {
  margin: 14px 0 0;
  font-size: clamp(32px, 6vw, 64px);
  font-weight: 300;
  line-height: 1.1;
  letter-spacing: -.02em;
  color: var(--white);
  max-width: 17ch;
}

.page-products .pp-lede {
  margin: 20px 0 0;
  max-width: 48ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-products .pp-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.page-products .pp-hero-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin: 30px 0 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--hairline-strong);
}

.page-products .pp-hero-meta-item dt {
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--muted);
}

.page-products .pp-hero-meta-item dd {
  margin: 8px 0 0;
  font-size: clamp(18px, 3.4vw, 26px);
  font-weight: 300;
  color: var(--signal);
}

.page-products .pp-hero-media {
  margin: 0;
}

.page-products .pp-hero-media img,
.page-products .pp-sec-media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 主体：索引栏 + 内容流 ---------- */
.page-products .pp-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 5vw, 52px);
  padding-top: clamp(40px, 6vw, 76px);
}

.page-products .pp-index {
  min-width: 0;
}

.page-products .pp-index-head {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--muted);
}

.page-products .pp-index-list {
  display: flex;
  gap: 4px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-products .pp-index-list::-webkit-scrollbar {
  display: none;
}

.page-products .pp-index-link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 12px;
  border: 1px solid transparent;
  border-left: 2px solid transparent;
  color: var(--muted);
  font-size: 14px;
  white-space: nowrap;
  text-decoration: none;
  transition: color var(--speed), border-color var(--speed), background-color var(--speed);
}

.page-products .pp-index-link:hover,
.page-products .pp-index-link:focus-visible {
  color: var(--white);
  border-color: var(--hairline-strong);
  border-left-color: var(--signal);
  background: rgba(255, 106, 26, .07);
}

.page-products .pp-index-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--signal);
}

/* ---------- 章节 ---------- */
.page-products .pp-sec {
  margin-bottom: clamp(48px, 8vw, 88px);
  padding-top: 26px;
  border-top: 1px solid var(--hairline-strong);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-products .pp-sec:last-of-type {
  margin-bottom: clamp(32px, 5vw, 56px);
}

.page-products .pp-sec-head {
  display: grid;
  gap: 8px;
  margin-bottom: 22px;
}

.page-products .pp-sec-num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--signal);
}

.page-products .pp-sec-title {
  margin: 0;
  font-size: clamp(23px, 3.4vw, 38px);
  font-weight: 300;
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--white);
  max-width: 24ch;
}

.page-products .pp-sec-lead {
  margin: 0 0 22px;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-products .pp-sec-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 4vw, 40px);
  align-items: start;
}

.page-products .pp-sec-copy p {
  margin: 0 0 15px;
  max-width: 54ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-products .pp-sec-media {
  margin: 0;
}

/* ---------- 数据锚点 ---------- */
.page-products .pp-facts {
  display: grid;
  gap: 1px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  background: var(--hairline);
  border: 1px solid var(--hairline);
}

.page-products .pp-facts li {
  display: grid;
  gap: 6px;
  padding: 14px 15px 16px;
  background: var(--green-700);
}

.page-products .pp-facts-k {
  font-family: var(--font-mono);
  font-size: 17px;
  color: var(--signal);
}

.page-products .pp-facts-v {
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 时间轴 ---------- */
.page-products .pp-timeline {
  margin-top: 28px;
  padding: 20px 18px 14px;
  background: var(--graphite);
  border: 1px solid var(--hairline);
}

.page-products .pp-timeline svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-products .pp-timeline-note {
  margin: 12px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--hairline);
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 筛选维度 ---------- */
.page-products .pp-filter {
  display: grid;
  gap: 16px;
  margin-top: 24px;
}

.page-products .pp-filter-row {
  display: grid;
  gap: 9px;
}

.page-products .pp-filter-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--signal);
}

.page-products .pp-chipset {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-products .pp-chip {
  display: inline-flex;
  align-items: center;
  padding: 7px 12px;
  border: 1px solid var(--hairline-strong);
  color: var(--muted);
  font-size: 13px;
  transition: color var(--speed), border-color var(--speed), background-color var(--speed);
}

.page-products .pp-chip:hover,
.page-products .pp-chip:focus-visible {
  color: var(--white);
  border-color: var(--signal);
}

.page-products .pp-chip.is-active {
  color: var(--white);
  border-color: var(--signal);
  background: rgba(255, 106, 26, .12);
}

/* ---------- 指标对比 ---------- */
.page-products .pp-metrics {
  display: grid;
  gap: 14px;
  margin-top: 24px;
  padding: 18px;
  background: var(--graphite);
  border: 1px solid var(--hairline);
}

.page-products .pp-compare {
  display: grid;
  gap: 7px;
}

.page-products .pp-compare-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted);
  transition: color var(--speed);
}

.page-products .pp-compare-track {
  display: flex;
  height: 8px;
  overflow: hidden;
  background: rgba(244, 248, 246, .05);
}

.page-products .pp-compare-track i {
  display: block;
  height: 100%;
  transition: filter var(--speed), opacity var(--speed);
}

.page-products .pp-compare-track i:first-child {
  background: var(--signal);
}

.page-products .pp-compare-track i:last-child {
  background: var(--blue-gray);
}

.page-products .pp-compare:hover .pp-compare-label,
.page-products .pp-compare:focus-within .pp-compare-label {
  color: var(--white);
}

.page-products .pp-compare:hover .pp-compare-track i {
  filter: brightness(1.3);
}

.page-products .pp-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 14px;
}

.page-products .pp-legend-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--muted);
}

.page-products .pp-legend-dot {
  width: 14px;
  height: 8px;
  display: inline-block;
}

.page-products .pp-legend-dot.is-home {
  background: var(--signal);
}

.page-products .pp-legend-dot.is-away {
  background: var(--blue-gray);
}

/* ---------- 专题列表 ---------- */
.page-products .pp-series {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--hairline);
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
}

.page-products .pp-series li {
  display: grid;
  gap: 7px;
  padding: 17px 16px;
  background: var(--green-700);
  transition: background-color var(--speed);
}

.page-products .pp-series li:hover {
  background: var(--green-500);
}

.page-products .pp-series-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--signal);
}

.page-products .pp-series-name {
  font-size: 15px;
  line-height: 1.7;
  color: var(--white);
}

.page-products .pp-series-meta {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}

/* ---------- 收藏状态 ---------- */
.page-products .pp-save {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-products .pp-save-btn {
  padding: 10px 15px;
  border: 1px solid var(--hairline-strong);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--muted);
}

.page-products .pp-save-btn.is-on {
  border-color: var(--signal);
  color: var(--signal);
  background: rgba(255, 106, 26, .09);
}

/* ---------- 使用场景 ---------- */
.page-products .pp-cases {
  display: grid;
  gap: 1px;
  background: var(--hairline);
  border: 1px solid var(--hairline);
}

.page-products .pp-case {
  display: grid;
  gap: 10px;
  align-content: start;
  padding: 20px 18px 24px;
  background: var(--green-700);
  border-top: 2px solid transparent;
  transition: border-color var(--speed), background-color var(--speed);
}

.page-products .pp-case:hover {
  border-top-color: var(--signal);
  background: var(--green-500);
}

.page-products .pp-case-idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--signal);
}

.page-products .pp-case h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 400;
  line-height: 1.4;
  color: var(--white);
}

.page-products .pp-case p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-products .pp-case a {
  justify-self: start;
  margin-top: 2px;
  font-size: 13px;
  color: var(--signal-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 162, 104, .45);
  transition: color var(--speed), border-color var(--speed);
}

.page-products .pp-case a:hover,
.page-products .pp-case a:focus-visible {
  color: var(--signal);
  border-bottom-color: var(--signal);
}

/* ---------- 结尾指向 ---------- */
.page-products .pp-tail {
  display: grid;
  gap: 16px;
  padding: 24px 22px calc(24px + 14px);
  background: linear-gradient(125deg, var(--green-700) 0%, var(--green-900) 100%);
  border: 1px solid var(--hairline-strong);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

.page-products .pp-tail-text {
  margin: 0;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-products .pp-tail-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 520px) {
  .page-products .pp-facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-products .pp-sec-head {
    grid-template-columns: 58px minmax(0, 1fr);
    align-items: baseline;
    gap: 18px;
  }

  .page-products .pp-series li {
    grid-template-columns: 118px minmax(0, 1fr) 92px;
    align-items: baseline;
    gap: 14px;
    padding: 18px 20px;
  }

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

  .page-products .pp-case {
    border-top-width: 2px;
  }
}

@media (min-width: 860px) {
  .page-products .pp-sec-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
  }

  .page-products .pp-sec-grid.is-flipped {
    grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  }

  .page-products .pp-sec-grid.is-flipped > :first-child {
    order: 2;
  }
}

@media (min-width: 900px) {
  .page-products .pp-hero-inner {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
    align-items: end;
    gap: clamp(28px, 4vw, 56px);
  }

  .page-products .pp-hero-copy {
    padding-bottom: 8px;
  }
}

@media (min-width: 1000px) {
  .page-products .pp-body {
    grid-template-columns: 176px minmax(0, 1fr);
    align-items: start;
  }

  .page-products .pp-index {
    position: sticky;
    top: calc(var(--header-h) + 26px);
    border-right: 1px solid var(--hairline);
    padding-right: 14px;
  }

  .page-products .pp-index-list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-products .pp-index-link {
    white-space: normal;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pp-index-link,
  .page-products .pp-chip,
  .page-products .pp-compare-track i,
  .page-products .pp-compare-label,
  .page-products .pp-series li,
  .page-products .pp-case,
  .page-products .pp-case a {
    transition: none;
  }
}