.page-products {
  --pp-gap: clamp(20px, 3vw, 32px);
  --pp-sec: clamp(56px, 8vw, 112px);
  --pp-cut: 22px;
  display: block;
}

/* ---------- 暗色开场：数据带 ---------- */
.page-products .pp-open {
  position: relative;
  overflow: hidden;
  background: var(--ink-900);
  color: var(--snow);
  padding-top: calc(var(--shell-h) + clamp(28px, 5vw, 64px));
  padding-bottom: clamp(48px, 7vw, 96px);
}

.page-products .pp-open::before {
  content: "";
  position: absolute;
  top: -20%;
  right: -18%;
  width: 60%;
  height: 160%;
  background: linear-gradient(112deg, transparent 44%, rgba(229, 23, 58, .12) 44%, rgba(229, 23, 58, .12) 48%, transparent 48%),
              linear-gradient(112deg, transparent 62%, rgba(43, 107, 255, .10) 62%, rgba(43, 107, 255, .10) 64%, transparent 64%);
  pointer-events: none;
}

.page-products .pp-open .breadcrumb {
  position: relative;
  color: rgba(255, 255, 255, .62);
  font-size: 13px;
}

.page-products .pp-open .breadcrumb__link,
.page-products .pp-open .breadcrumb__current {
  color: inherit;
}

.page-products .pp-open__grid {
  position: relative;
  display: grid;
  gap: clamp(28px, 4vw, 52px);
  align-items: center;
  margin-top: clamp(22px, 3vw, 36px);
}

.page-products .pp-open__lede h1 {
  font-size: clamp(30px, 5.4vw, 58px);
  line-height: 1.08;
  font-weight: 900;
  letter-spacing: -0.012em;
  margin: 14px 0 18px;
}

.page-products .pp-open__lede .type-lead {
  color: rgba(255, 255, 255, .78);
  max-width: 34em;
  font-size: clamp(15px, 1.6vw, 17px);
}

.page-products .pp-open__media {
  margin: 0;
}

.page-products .pp-stats {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(32px, 5vw, 56px) 0 0;
  padding: 1px;
  list-style: none;
  background: var(--line-500);
}

.page-products .pp-stats .stat {
  background: var(--ink-900);
  padding: 20px 18px 22px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-products .pp-stats .stat__value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(28px, 4.6vw, 44px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--snow);
}

.page-products .pp-stat--accent .stat__value {
  color: var(--red);
}

.page-products .pp-stats .stat__unit {
  font-size: .48em;
  margin-left: 4px;
  color: rgba(255, 255, 255, .7);
}

.page-products .pp-stats .stat__label {
  display: block;
  font-size: 13px;
  line-height: 1.5;
  letter-spacing: .02em;
  color: rgba(255, 255, 255, .58);
}

/* ---------- 共用的区块标题区 ---------- */
.page-products .pp-head {
  max-width: 60em;
}

.page-products .pp-head .type-section {
  font-size: clamp(24px, 3.4vw, 38px);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.012em;
  margin: 10px 0 14px;
}

.page-products .pp-head .type-lead {
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.75;
  max-width: 46em;
  color: var(--gray-500);
}

.page-products .pp-head--dark .type-lead {
  color: rgba(255, 255, 255, .72);
}

/* ---------- 亮区：通道分组 ---------- */
.page-products .pp-groups {
  background: var(--snow);
  color: var(--ink-900);
  padding: var(--pp-sec) 0;
}

.page-products .pp-groups .tablist {
  display: flex;
  gap: 2px;
  margin: clamp(28px, 4vw, 46px) 0 0;
  border-bottom: 1px solid var(--gray-200);
  overflow-x: auto;
  scrollbar-width: none;
}

.page-products .pp-groups .tablist::-webkit-scrollbar {
  display: none;
}

.page-products .pp-groups .tab {
  flex: 0 0 auto;
  appearance: none;
  background: none;
  border: 0;
  border-bottom: 3px solid transparent;
  padding: 14px 18px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--gray-500);
  cursor: pointer;
  transition: color .28s var(--ease), border-color .28s var(--ease);
}

.page-products .pp-groups .tab:hover {
  color: var(--ink-900);
}

.page-products .pp-groups .tab[aria-selected="true"] {
  color: var(--ink-900);
  border-bottom-color: var(--red);
}

.page-products .pp-groups .tab:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: -2px;
}

.page-products .pp-groups .tabpanel {
  padding-top: clamp(22px, 3vw, 34px);
}

.page-products .pp-groups .tabpanel[hidden] {
  display: none;
}

.page-products .pp-groups .tabpanel:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 4px;
}

/* ---------- 通道行 ---------- */
.page-products .pp-chlist {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--gray-200);
}

.page-products .pp-chrow {
  display: grid;
  gap: 6px 24px;
  padding: 18px 10px;
  border-bottom: 1px solid var(--gray-200);
  transition: background-color .24s var(--ease);
}

.page-products .pp-chrow:hover {
  background: var(--frost);
}

.page-products .pp-chrow__name {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .01em;
}

.page-products .pp-chrow__scope {
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--gray-500);
}

.page-products .pp-chrow__fields {
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.6;
  letter-spacing: .01em;
  color: var(--ink-700);
  border-left: 2px solid var(--blue);
  padding-left: 10px;
}

/* ---------- 暗区：兼容矩阵 ---------- */
.page-products .pp-matrix {
  position: relative;
  background: var(--ink-900);
  color: var(--snow);
  padding: var(--pp-sec) 0;
}

.page-products .pp-matrix__top {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  align-items: center;
}

.page-products .pp-matrix__media {
  margin: 0;
}

.page-products .pp-tablewrap {
  margin-top: clamp(30px, 4vw, 48px);
  border: 1px solid var(--line-500);
  overflow-x: auto;
}

.page-products .pp-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-products .pp-table caption {
  caption-side: top;
  text-align: left;
  padding: 14px 16px;
  font-size: 12.5px;
  letter-spacing: .06em;
  color: rgba(255, 255, 255, .5);
  border-bottom: 1px solid var(--line-500);
}

.page-products .pp-table th,
.page-products .pp-table td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid var(--line-500);
  white-space: nowrap;
}

.page-products .pp-table thead th {
  position: relative;
  overflow: hidden;
  background: var(--ink-700);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .05em;
  color: rgba(255, 255, 255, .74);
  border-bottom: 1px solid var(--line-500);
}

.page-products .pp-table thead th::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(104deg, transparent 58%, rgba(229, 23, 58, .16) 58%);
  pointer-events: none;
}

.page-products .pp-table tbody th {
  font-size: 14.5px;
  font-weight: 700;
  color: var(--snow);
}

.page-products .pp-table tbody tr {
  transition: background-color .24s var(--ease);
}

.page-products .pp-table tbody tr:hover,
.page-products .pp-table tbody tr:focus-within {
  background: rgba(43, 107, 255, .14);
}

.page-products .pp-table tbody tr:last-child th,
.page-products .pp-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-products .pp-table .num {
  font-family: var(--font-mono);
  font-weight: 700;
  color: rgba(255, 255, 255, .9);
}

/* 等级标记：图形 + 文字双编码 */
.page-products .lvl {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--snow);
}

.page-products .lvl::before {
  content: "";
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  background: var(--green);
  transform: rotate(45deg);
}

.page-products .lvl--b::before {
  background: var(--amber);
}

.page-products .lvl--c::before {
  background: var(--red);
}

/* 兼容等级图例 */
.page-products .pp-legend {
  display: grid;
  gap: 1px;
  margin-top: clamp(30px, 4vw, 48px);
  padding: 1px;
  background: var(--line-500);
}

.page-products .pp-legend__item {
  background: var(--ink-900);
  padding: 22px 20px 24px;
}

.page-products .pp-legend__item h3 {
  font-size: 17px;
  font-weight: 700;
  margin: 14px 0 10px;
  color: var(--snow);
}

.page-products .pp-legend__item p {
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(255, 255, 255, .7);
  margin: 0;
}

/* ---------- 亮区：三步适配 ---------- */
.page-products .pp-steps {
  background: var(--frost);
  color: var(--ink-900);
  padding: var(--pp-sec) 0;
}

.page-products .pp-steps__grid {
  display: grid;
  gap: clamp(30px, 4vw, 52px);
  align-items: start;
}

.page-products .pp-steps__figure {
  margin: clamp(24px, 3vw, 34px) 0 0;
  max-width: 300px;
}

.page-products .pp-steps__list {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(18px, 2.4vw, 26px);
}

.page-products .pp-step {
  position: relative;
  background: var(--snow);
  padding: 26px 22px 28px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--pp-cut)), calc(100% - var(--pp-cut)) 100%, 0 100%);
}

.page-products .pp-step::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 64px;
  height: 3px;
  background: linear-gradient(90deg, var(--red), var(--blue));
}

.page-products .pp-step__no {
  display: block;
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--red);
}

.page-products .pp-step__title {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.35;
  margin: 14px 0 10px;
}

.page-products .pp-step__do {
  font-size: 15px;
  line-height: 1.72;
  color: var(--gray-500);
  margin: 0 0 14px;
}

.page-products .pp-step__obs {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-900);
  margin: 0;
  padding-top: 12px;
  border-top: 1px solid var(--gray-200);
}

.page-products .pp-step__obs span {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--blue);
  margin-right: 8px;
}

/* ---------- 更新节奏与日志 ---------- */
.page-products .pp-cadence {
  background: var(--snow);
  color: var(--ink-900);
  padding: var(--pp-sec) 0;
}

.page-products .pp-cadence__band {
  margin: clamp(28px, 4vw, 44px) 0 0;
}

.page-products .pp-timeline {
  list-style: none;
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: 0;
  border-top: 1px solid var(--gray-200);
}

.page-products .pp-tl {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px 24px;
  padding: 18px 0;
  border-bottom: 1px solid var(--gray-200);
}

.page-products .pp-tl__phase {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--ink-900);
}

.page-products .pp-tl__bar {
  position: relative;
  display: block;
  height: 6px;
  background: var(--gray-200);
  overflow: hidden;
}

.page-products .pp-tl__bar i {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--red), var(--blue));
}

.page-products .pp-tl:nth-child(1) .pp-tl__bar i { width: 40%; }
.page-products .pp-tl:nth-child(2) .pp-tl__bar i { width: 100%; }
.page-products .pp-tl:nth-child(3) .pp-tl__bar i { width: 72%; }
.page-products .pp-tl:nth-child(4) .pp-tl__bar i { width: 34%; }

.page-products .pp-tl__note {
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--gray-500);
}

.page-products .pp-cadence__foot {
  margin: clamp(24px, 3vw, 34px) 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--gray-500);
  max-width: 52em;
}

.page-products .pp-link {
  color: var(--blue);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 107, 255, .35);
  transition: border-color .24s var(--ease);
}

.page-products .pp-link:hover {
  border-bottom-color: var(--blue);
}

.page-products .pp-link:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
}

/* ---------- 使用场景 ---------- */
.page-products .pp-scenes {
  background: var(--frost);
  color: var(--ink-900);
  padding: var(--pp-sec) 0;
}

.page-products .pp-scenes__grid {
  display: grid;
  gap: clamp(30px, 4vw, 52px);
  align-items: center;
}

.page-products .pp-scene {
  list-style: none;
  margin: clamp(24px, 3vw, 34px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-products .pp-scene__item {
  background: var(--snow);
  border-left: 3px solid var(--blue);
  padding: 20px 22px 22px;
}

.page-products .pp-scene__item:nth-child(1) {
  border-left-color: var(--red);
}

.page-products .pp-scene__title {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  margin: 0 0 10px;
}

.page-products .pp-scene__item p {
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--gray-500);
  margin: 0;
}

.page-products .pp-scenes__media {
  margin: 0;
}

/* ---------- 暗色收束带 ---------- */
.page-products .pp-close {
  background: var(--ink-900);
  color: var(--snow);
  padding: clamp(48px, 6vw, 84px) 0;
}

.page-products .pp-close__inner {
  display: grid;
  gap: clamp(24px, 3vw, 40px);
  align-items: center;
}

.page-products .pp-close .type-section {
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 10px 0 14px;
}

.page-products .pp-close__text {
  font-size: 15px;
  line-height: 1.78;
  color: rgba(255, 255, 255, .72);
  max-width: 42em;
  margin: 0;
}

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

.page-products .pp-close .btn--outline {
  color: var(--snow);
  border-color: rgba(255, 255, 255, .38);
}

.page-products .pp-close .btn--outline:hover {
  border-color: var(--snow);
  background: rgba(255, 255, 255, .08);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-products .pp-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-products .pp-chrow {
    grid-template-columns: 1.1fr 1.2fr 1.5fr;
    align-items: start;
  }

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

  .page-products .pp-tl {
    grid-template-columns: 8em 12em 1fr;
    align-items: center;
  }

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

@media (min-width: 900px) {
  .page-products .pp-open__grid {
    grid-template-columns: 7fr 5fr;
  }

  .page-products .pp-matrix__top {
    grid-template-columns: 5fr 7fr;
  }

  .page-products .pp-steps__grid {
    grid-template-columns: 5fr 7fr;
    align-items: start;
  }

  .page-products .pp-scenes__grid {
    grid-template-columns: 7fr 5fr;
  }

  .page-products .pp-close__inner {
    grid-template-columns: 1fr auto;
  }
}

@media (min-width: 1180px) {
  .page-products .pp-step {
    padding: 30px 28px 32px;
  }

  .page-products .pp-chrow {
    padding: 20px 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pp-chrow,
  .page-products .pp-table tbody tr,
  .page-products .pp-link {
    transition: none;
  }
}