.page-products {
  padding-bottom: clamp(40px, 7vw, 88px);
}

.page-products .container {
  width: min(100% - 40px, var(--shell-max));
  margin-inline: auto;
}

/* ---------- 面包屑 ---------- */
.page-products .breadcrumb {
  padding: 18px 0 0;
}

.page-products .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-products .breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  margin-right: 8px;
  color: var(--hair);
}

.page-products .breadcrumb__link {
  color: var(--mist);
  text-decoration: none;
}

.page-products .breadcrumb__link:hover,
.page-products .breadcrumb__link:focus-visible {
  color: var(--cyan);
}

/* ---------- 首屏 ---------- */
.page-products .page-head {
  position: relative;
  padding: clamp(26px, 4.5vw, 52px) 0 clamp(22px, 3vw, 36px);
  border-bottom: 1px solid var(--hair);
  overflow: hidden;
}

.page-products .page-head::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: clamp(80px, 18vw, 200px);
  height: clamp(80px, 18vw, 200px);
  background: linear-gradient(225deg, rgba(34, 224, 208, 0.4) 0%, rgba(34, 224, 208, 0) 62%);
  clip-path: polygon(100% 0, 100% 100%, 0 0);
  pointer-events: none;
}

.page-products .page-head__kicker {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--gold);
  text-transform: uppercase;
}

.page-products .page-head__title {
  margin: 0 0 16px;
  max-width: 22ch;
  font-family: var(--font-display);
  font-size: clamp(30px, 5.5vw, 60px);
  font-weight: 700;
  line-height: 1.04;
  letter-spacing: 0.02em;
  color: var(--text);
}

.page-products .page-head__lede {
  margin: 0;
  max-width: 66ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 章节索引 ---------- */
.page-products .toc {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding: 14px 0 12px;
  border-bottom: 1px solid var(--hair);
  scrollbar-width: none;
}

.page-products .toc::-webkit-scrollbar {
  display: none;
}

.page-products .toc__link {
  flex: 0 0 auto;
  padding: 6px 11px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s var(--ease-out), border-color 0.2s var(--ease-out), background 0.2s var(--ease-out);
}

.page-products .toc__link:hover,
.page-products .toc__link:focus-visible {
  color: var(--text);
  border-color: var(--hair);
  background: var(--panel);
}

.page-products .toc__link.is-active {
  color: var(--cyan);
  border-color: var(--cyan-deep);
  background: rgba(34, 224, 208, 0.08);
}

/* ---------- 章节通用 ---------- */
.page-products .section {
  padding-top: clamp(40px, 6vw, 76px);
}

.page-products .chapter {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
}

.page-products .chapter__num {
  font-family: var(--font-display);
  font-size: clamp(38px, 7vw, 68px);
  font-weight: 700;
  line-height: 0.9;
  letter-spacing: 0.02em;
  color: var(--gold);
}

.page-products .chapter__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--cyan);
  text-transform: uppercase;
}

.page-products .chapter__title {
  margin: 0;
  max-width: 24ch;
  font-family: var(--font-display);
  font-size: clamp(22px, 3.2vw, 34px);
  font-weight: 600;
  line-height: 1.18;
  letter-spacing: 0.02em;
  color: var(--text);
}

.page-products .prose {
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--mist);
}

.page-products .prose a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 224, 208, 0.35);
}

.page-products .prose a:hover,
.page-products .prose a:focus-visible {
  border-bottom-color: var(--cyan);
}

.page-products .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--gold);
  text-transform: uppercase;
}

/* ---------- 01 能力矩阵 ---------- */
.page-products .matrix-wrap {
  margin-top: 22px;
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  background: var(--panel);
  overflow-x: auto;
}

.page-products .matrix {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}

.page-products .matrix caption {
  padding: 12px 16px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--mist);
  background: var(--steel);
  border-bottom: 1px solid var(--hair);
}

.page-products .matrix thead th {
  padding: 14px 16px;
  text-align: left;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--text);
  background: var(--steel);
  border-bottom: 1px solid var(--hair);
  border-left: 1px solid var(--hair);
  white-space: nowrap;
}

.page-products .matrix thead th:first-child {
  border-left: 0;
}

.page-products .matrix tbody th {
  padding: 14px 16px;
  text-align: left;
  font-weight: 500;
  color: var(--mist);
  border-bottom: 1px solid var(--hair);
  white-space: nowrap;
}

.page-products .matrix tbody td {
  padding: 14px 16px;
  color: var(--text);
  border-bottom: 1px solid var(--hair);
  border-left: 1px solid var(--hair);
  vertical-align: top;
  line-height: 1.6;
}

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

.page-products .matrix tbody tr {
  transition: background 0.18s var(--ease-out);
}

.page-products .matrix tbody tr:hover th,
.page-products .matrix tbody tr:hover td {
  background: rgba(34, 224, 208, 0.07);
}

.page-products .matrix tbody tr:hover th[scope="row"] {
  color: var(--cyan);
  box-shadow: inset 3px 0 0 var(--cyan);
}

.page-products .matrix tbody td:nth-child(2) {
  color: var(--mint);
}

.page-products .matrix tbody td:nth-child(3) {
  color: var(--text);
}

.page-products .matrix tbody td:nth-child(4) {
  color: var(--gold);
}

/* ---------- 参数长条 ---------- */
.page-products .data-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 1px;
  margin-top: 20px;
  background: var(--hair);
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-products .data-strip__item {
  flex: 1 1 160px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  background: var(--panel);
}

.page-products .metric__value {
  font-family: var(--font-display);
  font-size: clamp(26px, 4vw, 36px);
  font-weight: 700;
  line-height: 1;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.page-products .metric__value--cyan {
  color: var(--cyan);
}

.page-products .metric__value--gold {
  color: var(--gold);
}

.page-products .metric__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--mist);
}

/* ---------- 02–04 产品卡 ---------- */
.page-products .prod-grid {
  display: grid;
  gap: 22px;
  margin-top: 8px;
}

.page-products .prod-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: clamp(18px, 2.4vw, 26px);
  background: linear-gradient(180deg, var(--panel) 0%, rgba(6, 9, 15, 0.4) 100%);
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.22s var(--ease-out);
}

.page-products .prod-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, rgba(34, 224, 208, 0.28) 0%, rgba(34, 224, 208, 0) 72%);
  clip-path: polygon(0 0, 100% 0, 0 100%);
  pointer-events: none;
}

.page-products .prod-card:hover {
  border-color: var(--cyan-deep);
}

.page-products .prod-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.page-products .prod-card__num {
  font-family: var(--font-display);
  font-size: clamp(30px, 4.4vw, 44px);
  font-weight: 700;
  line-height: 1;
  color: var(--gold);
  letter-spacing: 0.02em;
}

.page-products .prod-card__code {
  padding: 5px 9px;
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--mist);
  white-space: nowrap;
}

.page-products .prod-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.6vw, 28px);
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text);
}

.page-products .prod-card__lede {
  margin: 0;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--mist);
}

.page-products .prod-card__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.page-products .prod-card__list li {
  position: relative;
  padding-left: 20px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--text);
}

.page-products .prod-card__list li::before {
  content: "";
  position: absolute;
  top: 0.62em;
  left: 2px;
  width: 7px;
  height: 7px;
  background: var(--cyan);
  transform: rotate(45deg);
}

/* ---------- 图片框 ---------- */
.page-products .img-frame {
  position: relative;
  margin: 4px 0 0;
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  background: var(--steel);
  overflow: hidden;
}

.page-products .img-frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.03);
}

.page-products .img-frame--wide img {
  aspect-ratio: 3 / 2;
}

.page-products .img-frame--square img {
  aspect-ratio: 14 / 9;
}

.page-products .img-frame--portrait img {
  aspect-ratio: 3 / 4;
}

.page-products .img-frame__tag {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 6px 10px;
  background: rgba(6, 9, 15, 0.86);
  border-top: 1px solid var(--hair);
  border-right: 1px solid var(--hair);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

/* ---------- 折叠面板与参数表 ---------- */
.page-products .fold {
  margin-top: 4px;
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  background: rgba(22, 32, 46, 0.5);
}

.page-products .fold__sum {
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--cyan);
  cursor: pointer;
  list-style: none;
}

.page-products .fold__sum::-webkit-details-marker {
  display: none;
}

.page-products .fold__sum::before {
  content: "+ ";
  color: var(--gold);
}

.page-products .fold[open] .fold__sum::before {
  content: "− ";
}

.page-products .fold__body {
  padding: 4px 16px 16px;
  border-top: 1px solid var(--hair);
}

.page-products .spec-list {
  margin: 0;
  display: flex;
  flex-direction: column;
}

.page-products .spec-list__row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  justify-content: space-between;
  padding: 11px 0;
  border-bottom: 1px solid var(--hair);
}

.page-products .spec-list__row:last-child {
  border-bottom: 0;
}

.page-products .spec-list__key {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-products .spec-list__val {
  flex: 1 1 200px;
  margin: 0;
  text-align: right;
  font-family: var(--font-mono);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  color: var(--text);
}

/* ---------- 05 数据能力 ---------- */
.page-products .data-split {
  display: grid;
  gap: 22px;
  align-items: start;
}

.page-products .data-split__text .prose {
  margin: 0 0 14px;
}

.page-products .data-split__text .prose:last-child {
  margin-bottom: 0;
}

.page-products .pulse {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 22px;
  background: var(--panel);
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  outline: none;
}

.page-products .pulse:focus-visible {
  box-shadow: 0 0 0 2px var(--mint);
}

.page-products .pulse__ring {
  position: relative;
  flex: 0 0 auto;
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: conic-gradient(from 210deg, var(--cyan) 0deg, var(--cyan-deep) 165deg, var(--steel) 165deg, var(--steel) 360deg);
  display: grid;
  place-items: center;
  animation: pg-breathe 2.4s ease-in-out infinite;
  transition: filter 0.3s var(--ease-out);
}

.page-products .pulse:hover .pulse__ring,
.page-products .pulse:focus-visible .pulse__ring {
  filter: brightness(1.28);
}

.page-products .pulse__ring::after {
  content: "";
  position: absolute;
  inset: 9px;
  border-radius: 50%;
  background: var(--ink-950);
}

.page-products .pulse__core {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  line-height: 1;
  gap: 3px;
}

.page-products .pulse__num {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 700;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-products .pulse__unit {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--mist);
}

.page-products .pulse__meta {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

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

.page-products .pulse__strong {
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text);
}

.page-products .pulse__sub {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gold);
}

.page-products .data-flow {
  margin-top: 26px;
}

@keyframes pg-breathe {
  0%, 100% { box-shadow: 0 0 0 0 rgba(34, 224, 208, 0.34); }
  50% { box-shadow: 0 0 0 12px rgba(34, 224, 208, 0); }
}

/* ---------- 06 适用场景 ---------- */
.page-products .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.page-products .filter-bar__btn {
  padding: 7px 14px;
  background: transparent;
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
  cursor: pointer;
  transition: color 0.2s var(--ease-out), border-color 0.2s var(--ease-out), background 0.2s var(--ease-out);
}

.page-products .filter-bar__btn:hover,
.page-products .filter-bar__btn:focus-visible {
  color: var(--text);
  border-color: var(--cyan-deep);
}

.page-products .filter-bar__btn[aria-pressed="true"] {
  color: var(--ink-950);
  background: var(--cyan);
  border-color: var(--cyan);
  font-weight: 600;
}

.page-products .scene-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-products .scene {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 22px;
  background: var(--panel);
  border: 1px solid var(--hair);
  border-left: 3px solid var(--gold);
  border-radius: var(--radius);
  transition: background 0.2s var(--ease-out), border-left-color 0.2s var(--ease-out);
}

.page-products .scene:hover {
  background: var(--steel);
  border-left-color: var(--cyan);
}

.page-products .scene[hidden] {
  display: none;
}

.page-products .scene__idx {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-products .scene__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.4vw, 24px);
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text);
}

.page-products .scene__text {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

.page-products .scene__meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-products .scene-visual {
  margin-top: 26px;
}

/* ---------- 07 服务层级 ---------- */
.page-products .tier-rows {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-products .tier-row {
  display: grid;
  gap: 14px 28px;
  padding: 22px;
  background: var(--panel);
  border: 1px solid var(--hair);
  border-radius: var(--radius);
}

.page-products .tier-row--accent {
  background: linear-gradient(120deg, rgba(34, 224, 208, 0.1) 0%, rgba(14, 22, 34, 1) 46%);
  border-color: var(--cyan-deep);
}

.page-products .tier-row__id {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-products .tier-row__code {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-products .tier-row__name {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(21px, 2.6vw, 27px);
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text);
}

.page-products .tier-row__desc {
  margin: 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

.page-products .tier-row__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-products .tier-row__list li {
  position: relative;
  padding-left: 18px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.65;
  color: var(--text);
}

.page-products .tier-row__list li::before {
  content: "";
  position: absolute;
  top: 0.6em;
  left: 0;
  width: 6px;
  height: 6px;
  background: var(--cyan);
  transform: rotate(45deg);
}

.page-products .tier-row .fold {
  grid-column: 1 / -1;
}

.page-products .tier-note {
  margin-top: 22px;
}

/* ---------- 08 下一步 ---------- */
.page-products .next-band {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 22px;
  padding: clamp(24px, 4vw, 42px);
  background: var(--panel);
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-products .next-band::after {
  content: "";
  position: absolute;
  right: -60px;
  bottom: -60px;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle at center, rgba(34, 224, 208, 0.22) 0%, rgba(34, 224, 208, 0) 68%);
  pointer-events: none;
}

.page-products .next-band__title {
  margin: 10px 0 12px;
  max-width: 24ch;
  font-family: var(--font-display);
  font-size: clamp(24px, 3.4vw, 36px);
  font-weight: 600;
  line-height: 1.16;
  letter-spacing: 0.02em;
  color: var(--text);
}

.page-products .next-band__lede {
  margin: 0;
  max-width: 58ch;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--mist);
}

.page-products .next-band__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
}

.page-products .next-band__link {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid var(--hair);
}

.page-products .next-band__link:hover,
.page-products .next-band__link:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-products .chapter {
    display: grid;
    grid-template-columns: 110px 1fr;
    grid-template-rows: auto auto;
    align-items: end;
    gap: 4px 20px;
  }

  .page-products .chapter__num {
    grid-row: 1 / 3;
    align-self: start;
  }

  .page-products .chapter__kicker {
    grid-column: 2;
  }

  .page-products .chapter__title {
    grid-column: 2;
  }

  .page-products .data-split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 34px;
  }

  .page-products .pulse {
    flex-direction: column;
    align-items: flex-start;
  }

  .page-products .scene:nth-child(1) {
    margin-right: 18%;
  }

  .page-products .scene:nth-child(2) {
    margin-left: 9%;
    margin-right: 9%;
  }

  .page-products .scene:nth-child(3) {
    margin-left: 20%;
  }

  .page-products .tier-row {
    grid-template-columns: 200px minmax(0, 1.1fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-products .next-band {
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
  }

  .page-products .next-band__text {
    flex: 1 1 60%;
  }

  .page-products .next-band__actions {
    flex: 0 0 auto;
    flex-direction: column;
    align-items: flex-end;
  }
}

@media (min-width: 980px) {
  .page-products .prod-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 24px;
  }

  .page-products .prod-card--a {
    grid-column: 1 / span 7;
  }

  .page-products .prod-card--b {
    grid-column: 8 / span 12;
  }

  .page-products .prod-card--c {
    grid-column: 3 / span 6;
  }
}

@media (max-width: 480px) {
  .page-products .container {
    width: min(100% - 28px, var(--shell-max));
  }

  .page-products .prod-card__code {
    font-size: 10px;
    letter-spacing: 0.08em;
  }

  .page-products .spec-list__val {
    text-align: left;
  }

  .page-products .pulse {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pulse__ring {
    animation: none;
  }

  .page-products .prod-card,
  .page-products .scene,
  .page-products .toc__link,
  .page-products .filter-bar__btn {
    transition: none;
  }
}