.page-products {
  --dl-gap: clamp(16px, 3vw, 32px);
  --dl-pad: clamp(18px, 2.6vw, 28px);
  background: var(--ivory);
  color: var(--ink);
  overflow-x: clip;
}

.page-products .breadcrumb {
  margin-block: clamp(16px, 3vw, 28px) 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--ink-55);
}

.page-products .breadcrumb ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
}

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

.page-products .breadcrumb a {
  color: var(--ink-70);
  text-decoration: none;
}

.page-products .breadcrumb a:hover {
  color: var(--pulse-deep);
  text-decoration: underline;
}

/* ---------- 首屏 ---------- */

.page-products .dl-hero {
  position: relative;
  padding-block: clamp(28px, 5vw, 60px) clamp(28px, 4vw, 48px);
}

.page-products .dl-hero::before {
  content: "";
  position: absolute;
  z-index: 0;
  top: -60px;
  right: -18%;
  width: min(72%, 520px);
  aspect-ratio: 1 / 1;
  background: linear-gradient(152deg, var(--ice), rgba(191, 227, 242, 0) 72%);
  transform: skewY(-9deg);
  pointer-events: none;
}

.page-products .dl-hero::after {
  content: "";
  position: absolute;
  z-index: 0;
  bottom: 6%;
  left: -80px;
  width: clamp(120px, 16vw, 200px);
  height: clamp(120px, 16vw, 200px);
  background: radial-gradient(circle at 50% 50%, var(--tint), rgba(255, 225, 214, 0) 70%);
  pointer-events: none;
}

.page-products .dl-hero .shell {
  position: relative;
  z-index: 1;
}

.page-products .dl-hero h1 {
  margin: 10px 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 5.4vw, 62px);
  line-height: 1.04;
  letter-spacing: -0.04em;
  max-width: 20ch;
}

.page-products .dl-hero .lead {
  max-width: 60ch;
  margin: 0;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.75;
  color: var(--ink-70);
}

.page-products .hero-facts {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  margin: 24px 0 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--ink-55);
}

.page-products .hero-facts li {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
}

.page-products .fact-num {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 22px;
  letter-spacing: -0.03em;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

/* ---------- 2026 入口快捷栏 ---------- */

.page-products .quickbar {
  margin-top: clamp(24px, 4vw, 40px);
  padding-top: 16px;
  border-top: 1px solid var(--ink);
}

.page-products .quickbar-title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--pulse-deep);
}

.page-products .quickbar-grid {
  display: grid;
  gap: 10px;
}

.page-products .quickbar-item {
  display: grid;
  gap: 4px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--pulse);
  background: var(--ivory);
  color: var(--ink);
  text-decoration: none;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.page-products .quickbar-item--alt {
  border-left-color: var(--night);
  background: var(--ivory-deep);
}

.page-products .quickbar-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(18, 18, 20, 0.09);
  border-color: var(--pulse);
}

.page-products .quickbar-item:focus-visible {
  outline: 2px solid var(--pulse);
  outline-offset: 2px;
}

.page-products .quickbar-kicker {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--ink-55);
}

.page-products .quickbar-head {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.page-products .quickbar-go {
  font-size: 13px;
  color: var(--pulse-deep);
}

/* ---------- 章节通用 ---------- */

.page-products .section {
  padding-block: clamp(36px, 6vw, 76px);
}

.page-products .section-head {
  margin-bottom: var(--dl-gap);
}

.page-products .section-head h2 {
  margin: 8px 0 12px;
  max-width: 24ch;
}

.page-products .section-head .prose {
  max-width: 62ch;
  margin: 0;
  color: var(--ink-70);
}

/* ---------- 通道分栏 ---------- */

.page-products .channel-switch {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: var(--dl-gap);
}

.page-products .channel-chip {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 16px;
  border: 1px solid var(--line);
  background: var(--ivory);
  color: var(--ink);
  text-decoration: none;
  transition: transform 0.16s ease, box-shadow 0.16s ease;
}

.page-products .channel-chip:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 18px rgba(18, 18, 20, 0.1);
}

.page-products .channel-chip:focus-visible {
  outline: 2px solid var(--pulse);
  outline-offset: 2px;
}

.page-products .channel-chip--android {
  background: var(--ice);
  border-color: var(--ice);
}

.page-products .channel-chip--ios {
  background: var(--night);
  border-color: var(--night);
  color: var(--ivory);
}

.page-products .channel-chip-label {
  font-weight: 900;
  font-size: 15px;
  letter-spacing: -0.01em;
}

.page-products .channel-chip-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  opacity: 0.72;
}

.page-products .channel-grid {
  display: grid;
  gap: var(--dl-gap);
}

.page-products .channel {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: var(--dl-pad);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-products .channel--android {
  background: linear-gradient(180deg, var(--ice), var(--ivory) 58%);
  border-color: var(--ice);
}

.page-products .channel--ios {
  background: linear-gradient(180deg, var(--night), var(--ink) 82%);
  border-color: var(--night);
  color: var(--ivory);
}

.page-products .channel-kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--pulse-deep);
}

.page-products .channel--ios .channel-kicker {
  color: var(--amber);
}

.page-products .channel h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(20px, 2.4vw, 26px);
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.page-products .channel-figure {
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ivory-deep);
}

.page-products .channel--ios .channel-figure {
  background: var(--ink-soft);
}

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

.page-products .spec-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid rgba(18, 18, 20, 0.16);
}

.page-products .spec-list li {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 6px 14px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(18, 18, 20, 0.16);
}

.page-products .spec-key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ink-55);
}

.page-products .spec-val {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
}

.page-products .channel--ios .spec-list,
.page-products .channel--ios .spec-list li {
  border-color: var(--ivory-14);
}

.page-products .channel--ios .spec-key {
  color: var(--ivory-46);
}

.page-products .channel--ios .spec-val {
  color: var(--ivory);
}

.page-products .channel-note {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-70);
}

.page-products .channel--ios .channel-note {
  color: var(--ivory-70);
}

.page-products .channel-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: auto;
  padding-top: 6px;
}

.page-products .channel--ios .btn--ghost {
  color: var(--ivory);
  border-color: var(--ivory-46);
}

.page-products .channel--ios .btn--ghost:hover {
  border-color: var(--ivory);
}

/* ---------- 安装步骤 ---------- */

.page-products .steps-layout {
  display: grid;
  gap: var(--dl-gap);
}

.page-products .steps-figure {
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ivory-deep);
  border: 1px solid var(--line);
}

.page-products .steps-figure img,
.page-products .migrate-figure img,
.page-products .comeback-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

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

.page-products .step-card {
  padding: 16px 18px;
  border-left: 2px solid var(--pulse);
  background: var(--ivory-deep);
}

.page-products .step-num {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--pulse-deep);
}

.page-products .step-card h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 17px;
  letter-spacing: -0.02em;
}

.page-products .step-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-70);
}

.page-products .snags {
  margin-top: clamp(28px, 4vw, 48px);
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.page-products .snags-title {
  margin: 0 0 16px;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(18px, 2.1vw, 22px);
  letter-spacing: -0.01em;
}

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

.page-products .snag-item {
  padding: 16px;
  border: 1px solid var(--line);
  background: var(--ivory);
}

.page-products .snag-item p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-70);
}

/* ---------- 换机迁移 ---------- */

.page-products .migrate-grid {
  display: grid;
  gap: var(--dl-gap);
  align-items: center;
}

.page-products .migrate-copy h2 {
  margin: 8px 0 12px;
  max-width: 22ch;
}

.page-products .migrate-copy .prose {
  max-width: 58ch;
  margin: 0;
  color: var(--ink-70);
}

.page-products .migrate-path {
  list-style: none;
  margin: 22px 0 24px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products .migrate-path li {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 12px;
  align-items: center;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.6;
}

.page-products .path-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border: 1px solid var(--pulse);
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--pulse-deep);
}

.page-products .migrate-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-products .migrate-figure {
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ivory-deep);
  border: 1px solid var(--line);
}

/* ---------- 回归配置对照 ---------- */

.page-products .comeback-section {
  padding-block: clamp(36px, 6vw, 76px);
  background: var(--calm);
  color: var(--ink);
}

.page-products .comeback-grid {
  display: grid;
  gap: var(--dl-gap);
}

.page-products .comeback-copy h2 {
  margin: 8px 0 12px;
  max-width: 22ch;
}

.page-products .comeback-copy .prose {
  max-width: 56ch;
  margin: 0;
  color: rgba(18, 18, 20, 0.78);
}

.page-products .checklist {
  display: grid;
  gap: 10px;
  margin: 22px 0 24px;
}

.page-products .check-item {
  position: relative;
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 12px;
  align-items: start;
  padding: 12px 14px;
  background: rgba(247, 243, 234, 0.86);
  border: 1px solid rgba(18, 18, 20, 0.16);
  cursor: pointer;
  transition: background 0.16s ease, border-color 0.16s ease;
}

.page-products .check-item:hover {
  border-color: rgba(18, 18, 20, 0.4);
}

.page-products .check-item input {
  position: absolute;
  top: 14px;
  left: 14px;
  width: 1px;
  height: 1px;
  opacity: 0;
  margin: 0;
}

.page-products .check-box {
  position: relative;
  display: block;
  width: 20px;
  height: 20px;
  margin-top: 2px;
  border: 1px solid var(--ink-55);
  background: var(--ivory);
}

.page-products .check-item input:checked + .check-box {
  background: var(--pulse);
  border-color: var(--pulse);
}

.page-products .check-item input:checked + .check-box::after {
  content: "✓";
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: var(--ivory);
  font-size: 13px;
  line-height: 1;
}

.page-products .check-item input:focus-visible + .check-box {
  outline: 2px solid var(--ink);
  outline-offset: 2px;
}

.page-products .check-text {
  font-size: 14px;
  line-height: 1.65;
  color: var(--ink-70);
}

.page-products .check-text strong {
  display: block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 15px;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.page-products .comeback-figure {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-products .comeback-figure .media-frame {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(18, 18, 20, 0.14);
  background: var(--ivory-deep);
}

.page-products .comeback-tip {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(18, 18, 20, 0.72);
}

/* ---------- 尾部入口 ---------- */

.page-products .tail-section {
  padding-block: clamp(32px, 5vw, 64px) clamp(48px, 7vw, 88px);
}

.page-products .tail-section h2 {
  margin: 0 0 20px;
}

.page-products .tail-grid {
  gap: 12px;
}

.page-products .tail-card {
  display: grid;
  gap: 6px;
  padding: 20px;
  text-decoration: none;
  color: var(--ink);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.page-products .tail-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(18, 18, 20, 0.09);
  border-color: var(--pulse);
}

.page-products .tail-card:focus-visible {
  outline: 2px solid var(--pulse);
  outline-offset: 2px;
}

.page-products .tail-kicker {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--ink-55);
}

.page-products .tail-card strong {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 17px;
  letter-spacing: -0.02em;
}

.page-products .tail-go {
  font-size: 13px;
  color: var(--pulse-deep);
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-products .quickbar-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-products .snag-list {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 900px) {
  .page-products .channel-grid {
    grid-template-columns: repeat(2, 1fr);
    align-items: stretch;
  }

  .page-products .steps-layout {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: start;
  }

  .page-products .migrate-grid {
    grid-template-columns: 1.1fr 0.9fr;
  }

  .page-products .comeback-grid {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .quickbar-item,
  .page-products .channel-chip,
  .page-products .tail-card,
  .page-products .check-item {
    transition: none;
  }

  .page-products .quickbar-item:hover,
  .page-products .channel-chip:hover,
  .page-products .tail-card:hover {
    transform: none;
  }

  .page-products .dl-hero::before {
    transform: none;
  }
}