.page-products {
  --pp-tint: rgba(37, 216, 224, .08);
  --pp-tint-amber: rgba(242, 164, 92, .09);
}

.page-products [id] {
  scroll-margin-top: 96px;
}

.page-products .section {
  padding-block: clamp(2.4rem, 5.6vw, 4.5rem);
}

/* ---------- 首屏 ---------- */
.page-products .apps-intro {
  display: grid;
  gap: 1rem;
  padding-block: clamp(1.6rem, 5vw, 3rem) clamp(1.2rem, 4vw, 2.2rem);
}

.page-products .apps-intro__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .2em;
  color: var(--c-cyan);
}

.page-products .apps-intro__title {
  margin: 0;
  max-width: 21ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.85rem, 5.4vw, 3.3rem);
  line-height: 1.18;
  letter-spacing: .02em;
  color: var(--c-text);
}

.page-products .apps-intro__lead {
  margin: 0;
  max-width: 62ch;
  font-size: clamp(.98rem, 1.6vw, 1.06rem);
  line-height: 1.9;
  color: var(--c-text);
  opacity: .78;
}

.page-products .apps-intro__meta {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem .8rem;
  margin: .4rem 0 0;
  padding: 0;
  list-style: none;
}

.page-products .apps-intro__meta li {
  display: inline-flex;
  align-items: baseline;
  gap: .4rem;
  padding: .42rem .95rem;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-pill);
  font-size: .86rem;
  color: var(--c-dim);
}

.page-products .apps-intro__meta .num {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--c-cyan);
}

/* ---------- 通用视觉框 ---------- */
.page-products .visual {
  margin: 0;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--c-ink-2);
}

.page-products .visual img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-products .visual figcaption {
  padding: .7rem 1.1rem;
  border-top: 1px solid var(--c-line);
  font-size: .78rem;
  line-height: 1.6;
  color: var(--c-dim);
}

.page-products .matrix-visual {
  margin-top: clamp(1.2rem, 3vw, 2rem);
}

/* ---------- 应用矩阵 ---------- */
.page-products .apps-matrix {
  display: grid;
  gap: 1rem;
  margin-top: clamp(1.2rem, 3vw, 2rem);
}

.page-products .apps-card {
  display: grid;
  align-content: start;
  gap: .68rem;
  padding: clamp(1.25rem, 3vw, 1.9rem);
  background: var(--c-ink-2);
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  transition: transform .32s var(--ease), border-color .32s var(--ease), box-shadow .32s var(--ease);
}

.page-products .apps-card:hover,
.page-products .apps-card:focus-within {
  transform: translateY(-2px);
  border-color: var(--c-cyan);
  box-shadow: 0 0 0 1px rgba(37, 216, 224, .35), 0 20px 40px -30px rgba(37, 216, 224, .75);
}

.page-products .apps-card--amber:hover,
.page-products .apps-card--amber:focus-within {
  border-color: var(--c-amber);
  box-shadow: 0 0 0 1px rgba(242, 164, 92, .35), 0 20px 40px -30px rgba(242, 164, 92, .7);
}

.page-products .apps-card__index {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  color: var(--c-cyan);
}

.page-products .apps-card--amber .apps-card__index {
  color: var(--c-amber);
}

.page-products .apps-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.4vw, 1.5rem);
  font-weight: 800;
  letter-spacing: .02em;
  color: var(--c-text);
}

.page-products .apps-card__text {
  margin: 0;
  font-size: .94rem;
  line-height: 1.85;
  color: var(--c-text);
  opacity: .74;
}

.page-products .apps-card__list {
  display: grid;
  gap: .42rem;
  margin: .2rem 0 0;
  padding: 0;
  list-style: none;
}

.page-products .apps-card__list li {
  position: relative;
  padding-left: 1rem;
  font-size: .9rem;
  line-height: 1.7;
  color: var(--c-dim);
}

.page-products .apps-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 8px;
  height: 1px;
  background: var(--c-cyan);
  opacity: .8;
}

.page-products .apps-card--amber .apps-card__list li::before {
  background: var(--c-amber);
}

.page-products .apps-card__fit {
  margin: .5rem 0 0;
  padding-top: .75rem;
  border-top: 1px solid var(--c-line);
  font-size: .84rem;
  line-height: 1.7;
  color: var(--c-dim);
}

/* ---------- 横向主题带 ---------- */
.page-products .theme-band {
  display: flex;
  align-items: center;
  gap: .8rem;
  padding-block: 1rem;
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
}

.page-products .theme-band__dot {
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-amber);
}

.page-products .theme-band__text {
  margin: 0;
  font-size: .88rem;
  letter-spacing: .04em;
  color: var(--c-dim);
}

/* ---------- 两版并列对照带 ---------- */
.page-products .pair-band {
  display: grid;
  gap: 1rem;
  margin-top: clamp(1.3rem, 3vw, 2.2rem);
}

.page-products .pair-col {
  display: grid;
  align-content: start;
  gap: .6rem;
  padding: clamp(1.25rem, 3vw, 1.9rem);
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  transition: border-color .32s var(--ease), background-color .32s var(--ease);
}

.page-products .pair-col--new {
  background: linear-gradient(158deg, var(--pp-tint) 0%, rgba(18, 38, 58, .92) 58%);
}

.page-products .pair-col--old {
  background: linear-gradient(158deg, var(--pp-tint-amber) 0%, rgba(18, 38, 58, .92) 58%);
}

.page-products .pair-col--new:hover,
.page-products .pair-col--new:focus-within {
  border-color: var(--c-cyan);
}

.page-products .pair-col--old:hover,
.page-products .pair-col--old:focus-within {
  border-color: var(--c-amber);
}

.page-products .pair-col__tag {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  color: var(--c-cyan);
}

.page-products .pair-col__tag--amber {
  color: var(--c-amber);
}

.page-products .pair-col__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.4vw, 1.4rem);
  font-weight: 800;
  letter-spacing: .02em;
  color: var(--c-text);
}

.page-products .pair-col__text {
  margin: 0;
  font-size: .94rem;
  line-height: 1.85;
  color: var(--c-text);
  opacity: .76;
}

.page-products .pair-col__list {
  display: grid;
  gap: .45rem;
  margin: .3rem 0 0;
  padding: 0;
  list-style: none;
}

.page-products .pair-col__list li {
  position: relative;
  padding-left: 1rem;
  font-size: .9rem;
  line-height: 1.7;
  color: var(--c-dim);
}

.page-products .pair-col__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 8px;
  height: 1px;
  background: currentColor;
  opacity: .9;
}

/* ---------- 旧切换入口 ---------- */
.page-products .legacy {
  display: grid;
  gap: clamp(1.4rem, 4vw, 2.8rem);
}

.page-products .legacy__steps {
  counter-reset: legstep;
  display: grid;
  gap: .9rem;
  margin: clamp(1.2rem, 3vw, 1.8rem) 0 0;
  padding: 0;
  list-style: none;
}

.page-products .legacy__steps li {
  counter-increment: legstep;
  position: relative;
  padding-left: 3rem;
  font-size: .96rem;
  line-height: 1.8;
  color: var(--c-text);
  opacity: .82;
}

.page-products .legacy__steps li::before {
  content: "0" counter(legstep);
  position: absolute;
  left: 0;
  top: .05em;
  display: grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  border: 1px solid var(--c-cyan);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: .74rem;
  color: var(--c-cyan);
}

.page-products .legacy__visual {
  align-self: center;
}

/* ---------- 终端适配 ---------- */
.page-products .term-layout {
  display: grid;
  gap: clamp(1.2rem, 3vw, 2rem);
  margin-top: clamp(1.3rem, 3vw, 2rem);
}

.page-products .term-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-md);
}

.page-products .term-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: .92rem;
}

.page-products .term-table th,
.page-products .term-table td {
  padding: .9rem 1.05rem;
  text-align: left;
  vertical-align: top;
  line-height: 1.7;
  border-bottom: 1px solid var(--c-line);
}

.page-products .term-table thead th {
  font-family: var(--font-mono);
  font-size: .74rem;
  font-weight: 500;
  letter-spacing: .12em;
  color: var(--c-dim);
  background: rgba(11, 22, 34, .6);
}

.page-products .term-table tbody th {
  font-weight: 600;
  color: var(--c-cyan);
  white-space: nowrap;
}

.page-products .term-table tbody td {
  color: var(--c-text);
  opacity: .8;
}

.page-products .term-table tbody tr:nth-child(odd) {
  background: rgba(18, 38, 58, .55);
}

.page-products .term-table tbody tr:hover {
  background: rgba(37, 216, 224, .08);
}

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

.page-products .term-layout__foot {
  margin: .9rem 0 0;
  font-size: .84rem;
  line-height: 1.75;
  color: var(--c-dim);
}

/* ---------- 版本演进 ---------- */
.page-products .timeline-visual {
  margin-top: clamp(1.2rem, 3vw, 1.8rem);
}

.page-products .timeline {
  display: grid;
  gap: 1.3rem;
  margin: clamp(1.5rem, 4vw, 2.4rem) 0 0;
  padding: 0 0 0 1.5rem;
  list-style: none;
  position: relative;
}

.page-products .timeline::before {
  content: "";
  position: absolute;
  left: 4px;
  top: .55rem;
  bottom: .55rem;
  width: 1px;
  background: linear-gradient(180deg, rgba(37, 216, 224, .7) 0%, rgba(37, 216, 224, .06) 100%);
}

.page-products .timeline__item {
  position: relative;
  display: grid;
  gap: .3rem;
}

.page-products .timeline__item::before {
  content: "";
  position: absolute;
  left: -24px;
  top: .48rem;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-ink);
  border: 1px solid var(--c-cyan);
}

.page-products .timeline__era {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--c-text);
}

.page-products .timeline__desc {
  margin: 0;
  font-size: .92rem;
  line-height: 1.8;
  color: var(--c-dim);
}

/* ---------- 获取与安装 ---------- */
.page-products .get-list {
  display: grid;
  margin-top: clamp(1.3rem, 3vw, 2rem);
  border-top: 1px solid var(--c-line);
}

.page-products .get-step {
  display: grid;
  gap: .4rem;
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--c-line);
  transition: background-color .32s var(--ease);
}

.page-products .get-step:hover {
  background: rgba(37, 216, 224, .05);
}

.page-products .get-step__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .86rem;
  letter-spacing: .12em;
  color: var(--c-cyan);
}

.page-products .get-step__body {
  display: grid;
  gap: .35rem;
}

.page-products .get-step__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.06rem;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--c-text);
}

.page-products .get-step__text {
  margin: 0;
  max-width: 68ch;
  font-size: .93rem;
  line-height: 1.85;
  color: var(--c-dim);
}

.page-products .get-step__text a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(37, 216, 224, .45);
}

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

.page-products .get-foot {
  margin: clamp(1.2rem, 3vw, 1.8rem) 0 0;
  max-width: 72ch;
  font-size: .9rem;
  line-height: 1.85;
  color: var(--c-dim);
}

.page-products .get-foot a {
  color: var(--c-amber);
  text-decoration: none;
  border-bottom: 1px solid rgba(242, 164, 92, .45);
}

.page-products .get-foot a:hover,
.page-products .get-foot a:focus-visible {
  border-bottom-color: var(--c-amber);
}

/* ---------- 焦点态 ---------- */
.page-products a:focus-visible {
  outline: 2px solid var(--c-amber);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- 渐显 ---------- */
.js-reveal .page-products [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .32s var(--ease), transform .32s var(--ease);
}

.js-reveal .page-products [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 断点 ---------- */
@media (min-width: 768px) {
  .page-products .get-step {
    grid-template-columns: 3.6rem minmax(0, 1fr);
    align-items: start;
    gap: 1rem;
    padding: 1.35rem 0;
  }

  .page-products .get-step__num {
    padding-top: .18rem;
  }

  .page-products .term-layout {
    grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-products .apps-matrix {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    grid-template-rows: auto auto;
    gap: 1.2rem;
  }

  .page-products .apps-card--a {
    grid-column: 1;
    grid-row: 1 / span 2;
  }

  .page-products .apps-card--b {
    grid-column: 2;
    grid-row: 1;
  }

  .page-products .apps-card--c {
    grid-column: 3;
    grid-row: 1;
  }

  .page-products .apps-card--d {
    grid-column: 2 / span 2;
    grid-row: 2;
  }

  .page-products .legacy {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    align-items: center;
  }

  .page-products .timeline {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1.4rem;
    padding: 2.2rem 0 0;
  }

  .page-products .timeline::before {
    left: 0;
    right: 0;
    top: 8px;
    bottom: auto;
    width: auto;
    height: 1px;
    background: linear-gradient(90deg, rgba(37, 216, 224, .7) 0%, rgba(37, 216, 224, .08) 100%);
  }

  .page-products .timeline__item::before {
    left: 0;
    top: -2.2rem;
  }
}

@media (min-width: 1024px) {
  .page-products .pair-band {
    grid-template-columns: minmax(0, .92fr) minmax(0, 1fr) minmax(0, 1fr);
    gap: 1.2rem;
    align-items: stretch;
  }

  .page-products .pair-band__visual {
    display: flex;
    flex-direction: column;
  }

  .page-products .pair-band__visual img {
    flex: 1 1 auto;
    min-height: 260px;
    height: 100%;
    object-fit: cover;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .apps-card,
  .page-products .pair-col,
  .page-products .get-step,
  .js-reveal .page-products [data-reveal] {
    transition: none;
  }

  .page-products .apps-card:hover,
  .page-products .apps-card:focus-within {
    transform: none;
  }

  .js-reveal .page-products [data-reveal] {
    opacity: 1;
    transform: none;
  }
}