.page-products {
  --pp-rule: rgba(27, 51, 88, 0.16);
  --pp-rule-dark: rgba(201, 209, 217, 0.18);
  --pp-cyan-soft: rgba(43, 224, 200, 0.14);
  background: var(--paper-100);
  color: var(--text-ink);
}

.page-products .band {
  position: relative;
  padding-block: clamp(48px, 7vw, 92px);
}

.page-products .band--ink {
  background-color: var(--ink-900);
  background-image:
    linear-gradient(to right, rgba(201, 209, 217, 0.055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(201, 209, 217, 0.055) 1px, transparent 1px);
  background-size: 64px 64px;
  color: var(--paper-100);
}

.page-products .band--paper {
  background: var(--paper-100);
  color: var(--text-ink);
}

/* ---------- 首屏 ---------- */
.page-products .hero {
  padding-block: clamp(24px, 4vw, 40px) clamp(52px, 7vw, 96px);
  overflow: hidden;
}

.page-products .hero__head {
  max-width: 62rem;
  margin-top: clamp(24px, 4vw, 40px);
}

.page-products .hero__lede {
  margin: clamp(16px, 2vw, 22px) 0 0;
  max-width: 46rem;
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--metal-300);
}

.page-products .hero__facts {
  list-style: none;
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--pp-rule-dark);
}

.page-products .fact {
  padding: 16px 0 14px;
  border-bottom: 1px solid var(--pp-rule-dark);
}

.page-products .fact__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.4rem, 4vw, 1.9rem);
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--cyan);
  line-height: 1.2;
}

.page-products .fact__label {
  display: block;
  margin-top: 6px;
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  color: var(--metal-300);
}

.page-products .hero__figure {
  position: relative;
  margin: clamp(32px, 4vw, 48px) 0 0;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 26px 100%, 0 calc(100% - 26px));
  overflow: hidden;
  border: 1px solid var(--ink-700);
}

.page-products .hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 7;
  object-fit: cover;
  filter: saturate(0.9) contrast(1.05);
}

.page-products .hero__cap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: var(--ink-800);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--metal-300);
}

/* ---------- 章节标题 ---------- */
.page-products .sec-head {
  max-width: 52rem;
}

.page-products .sec-num {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  color: var(--cyan-text);
  text-transform: uppercase;
}

.page-products .sec-num--dark {
  color: var(--cyan);
}

.page-products .sec-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.6vw, 2.35rem);
  font-weight: 800;
  letter-spacing: -0.015em;
  line-height: 1.28;
}

.page-products .sec-lede {
  margin: 14px 0 0;
  max-width: 44rem;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--metal-600);
}

.page-products .band--ink .sec-lede {
  color: var(--metal-300);
}

.page-products .sub-title {
  margin: clamp(36px, 5vw, 56px) 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.4vw, 1.4rem);
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-products .sub-lede {
  margin: 10px 0 0;
  max-width: 42rem;
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--metal-600);
}

.page-products .band--ink .sub-lede {
  color: var(--metal-300);
}

/* ---------- 分类矩阵 ---------- */
.page-products .matrix {
  margin-top: clamp(26px, 4vw, 40px);
}

.page-products .chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--pp-rule);
}

.page-products .chip {
  display: inline-block;
  padding: 8px 14px;
  border: 1px solid var(--pp-rule);
  background: var(--paper-200);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--text-ink);
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.page-products .chip:hover {
  border-color: var(--cyan-text);
}

.page-products .matrix__radio:focus-visible + .chips .chip,
.page-products .chip:focus-visible {
  outline: 2px solid var(--cyan-text);
  outline-offset: 2px;
}

.page-products .cards {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
  grid-template-columns: minmax(0, 1fr);
}

.page-products .card {
  position: relative;
  display: block;
  padding: 20px 20px 18px;
  background: var(--paper-200);
  border: 1px solid var(--pp-rule);
  border-left: 3px solid var(--ink-700);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
  transition: border-color 0.22s ease, transform 0.22s ease;
}

.page-products .card:hover {
  border-color: var(--cyan-text);
  border-left-color: var(--cyan-text);
  transform: translateY(-2px);
}

.page-products .card__cat {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--metal-600);
  text-transform: uppercase;
}

.page-products .card__name {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-products .card__stat {
  margin: 10px 0 0;
  font-size: 0.86rem;
  color: var(--metal-600);
}

.page-products .card__num {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-ink);
}

.page-products .card__desc {
  margin: 10px 0 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--text-ink);
}

.page-products .card__role,
.page-products .card__time {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.03em;
  color: var(--metal-600);
}

.page-products .card__time {
  margin-top: 4px;
  color: var(--cyan-text);
}

.page-products #pp-cat-semi:checked ~ .cards > .card,
.page-products #pp-cat-passive:checked ~ .cards > .card,
.page-products #pp-cat-power:checked ~ .cards > .card,
.page-products #pp-cat-logic:checked ~ .cards > .card {
  display: none;
}

.page-products #pp-cat-semi:checked ~ .cards > .card[data-cat="semi"],
.page-products #pp-cat-passive:checked ~ .cards > .card[data-cat="passive"],
.page-products #pp-cat-power:checked ~ .cards > .card[data-cat="power"],
.page-products #pp-cat-logic:checked ~ .cards > .card[data-cat="logic"] {
  display: block;
}

.page-products #pp-cat-semi:checked ~ .chips [for="pp-cat-semi"],
.page-products #pp-cat-passive:checked ~ .chips [for="pp-cat-passive"],
.page-products #pp-cat-power:checked ~ .chips [for="pp-cat-power"],
.page-products #pp-cat-logic:checked ~ .chips [for="pp-cat-logic"],
.page-products #pp-cat-all:checked ~ .chips [for="pp-cat-all"] {
  background: var(--ink-900);
  border-color: var(--ink-900);
  color: var(--cyan);
}

/* ---------- 总览表 ---------- */
.page-products .table-wrap {
  margin-top: 18px;
  overflow-x: auto;
  border: 1px solid var(--pp-rule);
  background: var(--paper-100);
}

.page-products .ltable {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.page-products .ltable thead th {
  background: var(--ink-900);
  color: var(--paper-100);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-align: left;
  padding: 12px 14px;
  white-space: nowrap;
}

.page-products .ltable tbody th {
  text-align: left;
  font-weight: 600;
  color: var(--text-ink);
  padding: 11px 14px;
}

.page-products .ltable tbody td {
  padding: 11px 14px;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  color: var(--text-ink);
  white-space: nowrap;
}

.page-products .ltable tbody tr:nth-child(even) {
  background: var(--paper-200);
}

.page-products .ltable tbody tr:nth-child(even) th,
.page-products .ltable tbody tr:nth-child(even) td {
  background: var(--paper-200);
}

.page-products .ltable tfoot th,
.page-products .ltable tfoot td {
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  color: var(--cyan-text);
  border-top: 2px solid var(--ink-700);
  text-align: left;
  white-space: nowrap;
}

/* ---------- 阅读方式 ---------- */
.page-products .cols {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  grid-template-columns: minmax(0, 1fr);
}

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

.page-products .step {
  position: relative;
  padding: 18px 18px 18px 20px;
  background: var(--paper-200);
  border-top: 1px solid var(--pp-rule);
  border-left: 3px solid var(--ink-700);
}

.page-products .step__num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  color: var(--cyan-text);
}

.page-products .step__title {
  margin: 6px 0 0;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 800;
}

.page-products .step__text {
  margin: 8px 0 0;
  font-size: 0.92rem;
  line-height: 1.8;
}

.page-products .cols__side {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-products .panel {
  padding: 20px;
  border: 1px solid var(--pp-rule);
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%);
}

.page-products .panel--paper {
  background: var(--ink-900);
  color: var(--paper-100);
  border-color: var(--ink-700);
}

.page-products .panel__title {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--cyan);
}

.page-products .panel__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products .panel__list li {
  position: relative;
  padding-left: 18px;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--metal-300);
}

.page-products .panel__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
}

/* ---------- 结构导航示例 ---------- */
.page-products .pattern-split {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  grid-template-columns: minmax(0, 1fr);
  margin-top: clamp(26px, 4vw, 40px);
}

.page-products .pattern-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.page-products .pattern-item {
  padding: 16px;
  background: var(--ink-800);
  border: 1px solid var(--ink-700);
  border-top: 2px solid var(--cyan);
}

.page-products .pattern-item__num {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--cyan);
  line-height: 1;
}

.page-products .pattern-item__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 800;
  color: var(--paper-100);
}

.page-products .pattern-item__text {
  margin: 8px 0 0;
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--metal-300);
}

.page-products .pattern-figure {
  margin: 0;
  border: 1px solid var(--ink-700);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 20px 100%, 0 calc(100% - 20px));
  overflow: hidden;
}

.page-products .pattern-figure img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 200px;
  object-fit: cover;
  filter: saturate(0.85) brightness(0.92);
}

.page-products .path-cards {
  list-style: none;
  margin: clamp(24px, 4vw, 36px) 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
  grid-template-columns: minmax(0, 1fr);
}

.page-products .path-card {
  padding: 18px;
  background: var(--ink-800);
  border: 1px solid var(--ink-700);
  border-left: 3px solid var(--cyan);
  transition: border-color 0.22s ease, background-color 0.22s ease;
}

.page-products .path-card:hover {
  background: #132a4a;
  border-color: var(--cyan);
}

.page-products .path-card__svg {
  display: block;
  width: 100%;
  max-width: 180px;
  height: auto;
}

.page-products .path-card__svg path {
  fill: none;
  stroke: var(--cyan);
  stroke-width: 1.6;
  stroke-linecap: square;
}

.page-products .path-card__svg circle {
  fill: var(--orange);
}

.page-products .path-card__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 800;
  color: var(--paper-100);
}

.page-products .path-card__desc {
  margin: 8px 0 0;
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--metal-300);
}

.page-products .path-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 14px 0 0;
}

/* ---------- 终端配置 ---------- */
.page-products .kv-block {
  margin-top: clamp(20px, 3vw, 28px);
}

.page-products .kv {
  margin: 18px 0 0;
  padding: 0;
  border-top: 1px solid var(--pp-rule);
}

.page-products .kv__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 11px 0;
  border-bottom: 1px solid var(--pp-rule);
}

.page-products .kv__row dt {
  font-size: 0.86rem;
  color: var(--metal-600);
}

.page-products .kv__row dd {
  margin: 0;
}

.page-products .kv__val {
  display: inline-block;
  padding: 3px 9px;
  background: var(--paper-200);
  border-left: 2px solid var(--cyan-text);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.02em;
  color: var(--text-ink);
}

.page-products .check-block {
  margin-top: clamp(28px, 4vw, 40px);
}

.page-products .checks {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
  counter-reset: none;
}

.page-products .check {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 12px 14px;
  background: var(--paper-200);
  border-left: 3px solid var(--orange);
}

.page-products .check__num {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--orange-text);
  line-height: 1.6;
}

.page-products .check__text {
  font-size: 0.9rem;
  line-height: 1.75;
}

.page-products .check-note {
  margin: 14px 0 0;
  padding: 12px 14px;
  border: 1px dashed var(--pp-rule);
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--metal-600);
}

.page-products .check-note a {
  color: var(--cyan-text);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-products .device-figure {
  margin: 0;
  border: 1px solid var(--pp-rule);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
  overflow: hidden;
}

.page-products .device-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
}

.page-products .device-figure figcaption {
  padding: 10px 14px;
  background: var(--ink-900);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--metal-300);
}

/* ---------- 版本差异 ---------- */
.page-products .version-figure {
  margin: clamp(24px, 4vw, 36px) 0 0;
  border: 1px solid var(--ink-700);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
  overflow: hidden;
}

.page-products .version-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  opacity: 0.85;
}

.page-products .diff {
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(0, 1fr);
  margin-top: clamp(22px, 3vw, 32px);
}

.page-products .diff__col {
  padding: 18px;
  border: 1px solid var(--ink-700);
  background: var(--ink-800);
}

.page-products .diff__col--new {
  background: #102a45;
  border-color: var(--cyan);
}

.page-products .diff__head {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--metal-300);
}

.page-products .diff__col--new .diff__head {
  color: var(--cyan);
}

.page-products .diff__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products .diff__item {
  padding: 8px 0 8px 12px;
  border-left: 1px solid var(--ink-700);
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--metal-300);
}

.page-products .diff__item--changed {
  border-left: 3px solid var(--cyan);
  color: var(--paper-100);
}

.page-products .diff-notes {
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(0, 1fr);
  margin-top: 16px;
}

.page-products .diff-note {
  padding: 16px;
  background: var(--ink-800);
  border-top: 2px solid var(--orange);
}

.page-products .diff-note__title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  color: var(--orange);
}

.page-products .diff-note p {
  margin: 8px 0 0;
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--metal-300);
}

.page-products .version-link {
  margin: 20px 0 0;
  font-size: 0.88rem;
  color: var(--metal-300);
}

.page-products .version-link a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 获取方式 ---------- */
.page-products .access__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  grid-template-columns: minmax(0, 1fr);
  align-items: start;
}

.page-products .access__list {
  list-style: none;
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-products .access__list li {
  position: relative;
  padding: 12px 14px 12px 32px;
  background: var(--paper-200);
  font-size: 0.92rem;
  line-height: 1.75;
  border-left: 2px solid var(--ink-700);
}

.page-products .access__list li::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 1.45em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan-text);
}

.page-products .access__list strong {
  font-weight: 800;
}

.page-products .access__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 30px);
}

.page-products .access__figure {
  margin: 0;
  border: 1px solid var(--pp-rule);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
  overflow: hidden;
}

.page-products .access__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 5 / 3;
  object-fit: cover;
}

/* ---------- 响应式 ---------- */
@media (min-width: 600px) {
  .page-products .cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-products .kv__row {
    grid-template-columns: minmax(0, 220px) minmax(0, 1fr);
    align-items: center;
    gap: 16px;
  }
}

@media (min-width: 860px) {
  .page-products .diff {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 0;
  }

  .page-products .diff__col--old {
    border-right: 0;
  }

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

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

  .page-products .pattern-split {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: stretch;
  }

  .page-products .access__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  }
}

@media (min-width: 980px) {
  .page-products .hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-products .fact {
    border-bottom: 0;
    border-left: 1px solid var(--pp-rule-dark);
    padding: 18px 18px 16px;
  }

  .page-products .fact:first-child {
    border-left: 0;
    padding-left: 0;
  }

  .page-products .cols {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  }

  .page-products .cols--flip {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  }

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

  .page-products .card:nth-child(3n + 2) {
    transform: translateY(14px);
  }

  .page-products .card:nth-child(3n + 2):hover {
    transform: translateY(12px);
  }

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

  .page-products .table-wrap {
    overflow: visible;
  }

  .page-products .ltable thead th {
    position: sticky;
    top: 0;
    z-index: 2;
  }
}

@media (min-width: 1180px) {
  .page-products .hero__figure img {
    max-height: 420px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .card,
  .page-products .card:hover {
    transform: none;
    transition: none;
  }
}