.page-products {
  --pp-line: rgba(11, 31, 51, 0.14);
  --pp-line-dark: rgba(207, 227, 238, 0.26);
  --pp-ice-soft: rgba(244, 248, 250, 0.06);
  background: var(--ice);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
}

.page-products .content-shell {
  width: min(1180px, calc(100% - var(--gutter) * 2));
  margin-inline: auto;
}

.page-products h1,
.page-products h2,
.page-products h3 {
  margin: 0;
  font-family: var(--font-display);
  line-height: 1.16;
  letter-spacing: -0.01em;
}

.page-products p {
  margin: 0;
}

.page-products a {
  color: inherit;
}

.page-products .mono {
  font-family: var(--font-mono);
}

.page-products .media-frame {
  margin: 0;
  overflow: hidden;
  background: var(--polar-800);
}

.page-products .media-frame__img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 首屏 ---------- */
.page-products .apps-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 4vw, 44px) 0 clamp(34px, 5vw, 64px);
  background: var(--polar-900);
  color: var(--ice);
}

.page-products .apps-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(115deg, rgba(207, 227, 238, 0.07) 0 1px, transparent 1px 46px);
  pointer-events: none;
}

.page-products .apps-hero__inner {
  position: relative;
  display: grid;
  gap: clamp(24px, 4vw, 42px);
}

.page-products .apps-hero__lead {
  min-width: 0;
}

.page-products .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(244, 248, 250, 0.6);
}

.page-products .breadcrumb-list a {
  color: var(--cyan);
  text-decoration: none;
}

.page-products .breadcrumb-list a:hover {
  text-decoration: underline;
}

.page-products .breadcrumb-list li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(244, 248, 250, 0.35);
}

.page-products .apps-kicker {
  margin-bottom: 14px;
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--cyan);
}

.page-products .apps-hero h1 {
  font-size: clamp(32px, 6.2vw, 66px);
  font-weight: 900;
  margin-bottom: 18px;
  max-width: 22ch;
}

.page-products .apps-lede {
  max-width: 46ch;
  font-size: clamp(15px, 1.6vw, 17px);
  color: rgba(244, 248, 250, 0.82);
}

.page-products .apps-stamp {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 24px;
  padding: 8px 14px;
  border: 1px solid var(--pp-line-dark);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-products .apps-stamp__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(79, 240, 192, 0.16);
}

.page-products .apps-hero__figure {
  aspect-ratio: 3 / 2;
  border: 1px solid var(--pp-line-dark);
}

/* ---------- 四站路线 ---------- */
.page-products .route-map {
  position: relative;
  display: grid;
  gap: 12px;
  margin: clamp(28px, 4vw, 50px) 0 0;
  padding: 0;
  list-style: none;
}

.page-products .route-node {
  display: grid;
  gap: 6px;
  padding: 16px 18px 18px;
  border-top: 2px solid var(--orange);
  background: var(--pp-ice-soft);
  color: var(--ice);
  text-decoration: none;
  transition: background 0.2s ease, transform 0.2s ease;
}

.page-products .route-node:hover,
.page-products .route-node:focus-visible {
  background: rgba(244, 248, 250, 0.12);
  transform: translateY(-2px);
}

.page-products .route-node__no {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-products .route-node__name {
  font-family: var(--font-display);
  font-size: clamp(18px, 2.2vw, 22px);
  font-weight: 800;
}

.page-products .route-node__desc {
  font-size: 14px;
  line-height: 1.6;
  color: rgba(244, 248, 250, 0.72);
}

.page-products .route-node__arrow {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--orange);
}

/* ---------- 章节索引 ---------- */
.page-products .chapter-bar {
  background: var(--paper);
  border-bottom: 1px solid var(--pp-line);
}

.page-products .chapter-index {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding-block: 12px;
  scrollbar-width: thin;
}

.page-products .chapter-link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border: 1px solid transparent;
  font-size: 13px;
  white-space: nowrap;
  text-decoration: none;
  color: var(--moss);
  transition: color 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.page-products .chapter-link:hover,
.page-products .chapter-link:focus-visible {
  border-color: var(--orange);
  color: var(--ink);
}

.page-products .chapter-link[data-active] {
  border-color: var(--orange);
  background: var(--ice);
  color: var(--ink);
}

.page-products .chapter-jump {
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--clay);
}

/* ---------- 章节通用 ---------- */
.page-products .apps-chapter {
  padding: clamp(40px, 6vw, 84px) 0;
}

.page-products .apps-chapter--paper {
  background: var(--paper);
}

.page-products .apps-chapter--dark {
  background: var(--polar-800);
  color: var(--ice);
}

.page-products .chapter-head {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(22px, 3vw, 38px);
}

.page-products .chapter-no {
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--clay);
}

.page-products .chapter-head h2 {
  font-size: clamp(26px, 3.8vw, 42px);
  font-weight: 800;
  max-width: 24ch;
}

.page-products .chapter-intro {
  max-width: 62ch;
  font-size: clamp(15px, 1.5vw, 17px);
  color: rgba(16, 20, 24, 0.78);
}

.page-products .apps-chapter--dark .chapter-no {
  color: var(--cyan);
}

.page-products .apps-chapter--dark .chapter-intro {
  color: rgba(244, 248, 250, 0.8);
}

/* ---------- 筛选 ---------- */
.page-products .filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}

.page-products .filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  background: transparent;
  border: 1px solid var(--pp-line);
  color: var(--moss);
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.page-products .filter-chip:hover {
  border-color: var(--polar-900);
  color: var(--ink);
}

.page-products .filter-chip[aria-pressed="true"] {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--polar-900);
}

.page-products .filter-count {
  font-size: 11px;
  opacity: 0.7;
}

/* ---------- 工具清单 ---------- */
.page-products .tool-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-bottom: 1px solid var(--pp-line);
}

.page-products .tool-item {
  display: grid;
  gap: 10px;
  padding: 22px 0;
  border-top: 1px solid var(--pp-line);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.page-products .tool-item[hidden],
.page-products .tool-item.is-filtered-out {
  display: none;
}

.page-products .tool-item__no {
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--clay);
}

.page-products .tool-item__body h3 {
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 800;
  margin-bottom: 8px;
}

.page-products .tool-item__body p {
  max-width: 58ch;
  color: rgba(16, 20, 24, 0.82);
}

.page-products .tool-item__path {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--moss);
}

.page-products .tool-item__meta {
  margin: 0;
  padding-top: 12px;
  border-top: 1px dashed var(--pp-line);
}

.page-products .tool-item__meta dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--stone);
}

.page-products .tool-item__meta dd {
  margin: 2px 0 12px;
  font-size: 14px;
  line-height: 1.65;
  color: rgba(16, 20, 24, 0.8);
}

.page-products .tool-item__meta dd:last-child {
  margin-bottom: 0;
}

/* ---------- 约看流程横滑 ---------- */
.page-products .flow-track {
  display: flex;
  gap: 16px;
  margin: 0;
  padding: 4px 0 16px;
  list-style: none;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
}

.page-products .flow-step {
  flex: 0 0 min(80%, 340px);
  scroll-snap-align: start;
  display: grid;
  gap: 10px;
  padding: 22px 22px 24px;
  background: var(--ice);
  border-top: 3px solid var(--orange);
  box-shadow: 0 1px 0 var(--ice-line);
}

.page-products .flow-step__no {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--clay);
}

.page-products .flow-step h3 {
  font-size: clamp(19px, 2.2vw, 23px);
  font-weight: 800;
}

.page-products .flow-step p {
  font-size: 15px;
  color: rgba(16, 20, 24, 0.82);
}

.page-products .flow-step__hint {
  padding-top: 10px;
  border-top: 1px dashed var(--pp-line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--moss);
}

.page-products .flow-note {
  max-width: 66ch;
  margin-top: 6px;
  font-size: 15px;
  color: rgba(16, 20, 24, 0.78);
}

.page-products .flow-note a,
.page-products .radar-note a,
.page-products .version-item a,
.page-products .checklist-note a {
  color: var(--clay);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 清单 ---------- */
.page-products .checklist-layout {
  display: grid;
  gap: 26px;
}

.page-products .checklist-figure {
  aspect-ratio: 10 / 7;
  border: 1px solid var(--pp-line);
}

.page-products .spec-cluster {
  display: grid;
  gap: 12px;
  margin-bottom: 22px;
}

.page-products .spec-group {
  padding: 14px 16px 16px;
  border: 1px solid var(--pp-line);
  background: rgba(244, 248, 250, 0.6);
}

.page-products .spec-group h3 {
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  font-weight: 600;
  color: var(--stone);
}

.page-products .tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-products .spec-tag {
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  background: var(--moss);
  color: var(--paper);
}

.page-products .spec-tag--clay {
  background: var(--clay);
}

.page-products .spec-tag--moss {
  background: var(--polar-800);
  color: var(--ice);
}

.page-products .check-grid {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .check-card {
  padding: 16px 18px 18px;
  border: 1px solid var(--pp-line);
  background: var(--ice);
}

.page-products .check-card h3 {
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  font-weight: 600;
  color: var(--clay);
}

.page-products .check-list {
  display: grid;
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .check-list label {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 9px;
  align-items: start;
  font-size: 14px;
  line-height: 1.55;
  cursor: pointer;
}

.page-products .check-list input {
  width: 16px;
  height: 16px;
  margin-top: 4px;
  accent-color: var(--orange);
}

.page-products .checklist-note {
  margin-top: 18px;
  max-width: 62ch;
  font-size: 14px;
  color: rgba(16, 20, 24, 0.76);
}

/* ---------- 阵容雷达 ---------- */
.page-products .radar-layout {
  display: grid;
  gap: 28px;
  align-items: center;
}

.page-products .radar-points {
  display: grid;
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .radar-points li {
  padding-left: 16px;
  border-left: 2px solid var(--orange);
}

.page-products .radar-points__label {
  margin-bottom: 4px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-products .radar-points li p:last-child {
  font-size: 15px;
  color: rgba(244, 248, 250, 0.84);
}

.page-products .radar-note {
  margin-top: 22px;
  font-size: 14px;
  color: rgba(244, 248, 250, 0.72);
}

.page-products .radar-note a {
  color: var(--cyan);
}

.page-products .radar-figure {
  aspect-ratio: 10 / 7;
  border: 1px solid var(--pp-line-dark);
}

/* ---------- 手机直达 ---------- */
.page-products .mobile-layout {
  display: grid;
  gap: 26px;
}

.page-products .mobile-figure {
  aspect-ratio: 4 / 5;
  max-width: 340px;
  border: 1px solid var(--pp-line);
}

.page-products .mobile-list {
  display: grid;
  gap: 20px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .mobile-list__title {
  margin-bottom: 6px;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.2vw, 21px);
  font-weight: 800;
}

.page-products .mobile-list li p:last-child {
  font-size: 15px;
  color: rgba(16, 20, 24, 0.8);
}

/* ---------- 版本与可用 ---------- */
.page-products .version-list {
  display: grid;
  gap: 0;
  margin: 0 0 30px;
  border-top: 1px solid var(--pp-line);
}

.page-products .version-item {
  display: grid;
  gap: 4px;
  padding: 18px 0;
  border-bottom: 1px solid var(--pp-line);
}

.page-products .version-item dt {
  font-family: var(--font-display);
  font-size: clamp(17px, 2vw, 20px);
  font-weight: 800;
}

.page-products .version-item dd {
  margin: 0;
  max-width: 68ch;
  font-size: 15px;
  color: rgba(16, 20, 24, 0.8);
}

.page-products .version-figure {
  aspect-ratio: 2 / 1;
  border: 1px solid var(--pp-line);
}

/* ---------- 收尾 ---------- */
.page-products .apps-cta {
  padding: clamp(32px, 5vw, 62px) 0;
  background: var(--polar-900);
  color: var(--ice);
}

.page-products .apps-cta__inner {
  display: grid;
  gap: 22px;
}

.page-products .apps-cta h2 {
  font-size: clamp(24px, 3.4vw, 36px);
  font-weight: 800;
  margin-bottom: 10px;
}

.page-products .apps-cta p {
  max-width: 54ch;
  font-size: 15px;
  color: rgba(244, 248, 250, 0.8);
}

.page-products .apps-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-products .apps-cta .btn {
  display: inline-flex;
  align-items: center;
  padding: 11px 22px;
  border: 1px solid var(--orange);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-decoration: none;
  transition: background 0.18s ease, color 0.18s ease;
}

.page-products .apps-cta .btn--primary {
  background: var(--orange);
  color: var(--polar-900);
}

.page-products .apps-cta .btn--primary:hover {
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-products .apps-cta .btn--ghost {
  color: var(--ice);
  border-color: var(--pp-line-dark);
}

.page-products .apps-cta .btn--ghost:hover {
  border-color: var(--orange);
  color: var(--orange);
}

/* ---------- 响应式 ---------- */
@media (min-width: 600px) {
  .page-products .check-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 760px) {
  .page-products .route-map {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-products .flow-step {
    flex: 0 0 calc((100% - 32px) / 2);
  }
}

@media (min-width: 900px) {
  .page-products .apps-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
  }

  .page-products .chapter-head {
    grid-template-columns: 92px minmax(0, 1fr);
    column-gap: 24px;
    align-items: start;
  }

  .page-products .chapter-head .chapter-no {
    padding-top: 10px;
  }

  .page-products .chapter-head h2,
  .page-products .chapter-head .chapter-intro {
    grid-column: 2;
  }

  .page-products .tool-item {
    grid-template-columns: 58px minmax(0, 1fr) minmax(0, 20rem);
    column-gap: 26px;
    align-items: start;
    padding: 26px 0;
  }

  .page-products .tool-item__meta {
    padding-top: 0;
    padding-left: 20px;
    border-top: 0;
    border-left: 1px solid var(--pp-line);
  }

  .page-products .flow-step {
    flex: 0 0 calc((100% - 32px) / 3);
  }

  .page-products .radar-layout {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 40px;
  }

  .page-products .mobile-layout {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: 40px;
    align-items: center;
  }

  .page-products .apps-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (min-width: 1000px) {
  .page-products .route-map {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
    padding-bottom: 46px;
  }

  .page-products .route-map > li:nth-child(2) {
    transform: translateY(16px);
  }

  .page-products .route-map > li:nth-child(3) {
    transform: translateY(32px);
  }

  .page-products .route-map > li:nth-child(4) {
    transform: translateY(48px);
  }

  .page-products .checklist-layout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 36px;
    align-items: start;
  }

  .page-products .version-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 40px;
  }

  .page-products .version-figure {
    margin-top: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .route-node,
  .page-products .tool-item,
  .page-products .filter-chip,
  .page-products .chapter-link {
    transition: none;
  }

  .page-products .route-node:hover,
  .page-products .route-node:focus-visible {
    transform: none;
  }
}