.page-products {
  --xp-rail: 56px;
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-products .xp-crumb-wrap {
  padding-top: 20px;
}

.page-products .xp-hero {
  padding-top: 10px;
  padding-bottom: clamp(26px, 5vw, 46px);
  border-bottom: 1px solid var(--line);
}

.page-products .xp-hero h1 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(27px, 6.2vw, 48px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--paper);
  margin: 12px 0 16px;
  max-width: 20ch;
}

.page-products .xp-hero .lede {
  max-width: 48ch;
  font-size: clamp(15px, 2.3vw, 17px);
  line-height: 1.8;
  color: var(--paper);
  opacity: 0.86;
}

.page-products .hero-jumps {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-products .hero-jumps a {
  display: inline-block;
  padding: 9px 14px;
  border: 1px solid var(--line);
  background: var(--ink-2);
  color: var(--mint);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  text-decoration: none;
  transition: border-color 180ms ease, background 180ms ease, color 180ms ease;
}

.page-products .hero-jumps a:hover,
.page-products .hero-jumps a:focus-visible {
  border-color: var(--mint);
  background: var(--ink);
  color: var(--paper);
}

.page-products .xp-section {
  padding-top: clamp(40px, 7vw, 72px);
}

.page-products .xp-section .section-head {
  margin-bottom: 22px;
}

.page-products .xp-section .section-head .prose {
  margin-top: 10px;
}

/* ---------- 三种对照方式 ---------- */

.page-products .modes {
  position: relative;
}

.page-products .mode-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-products .mode-controls {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}

.page-products .mode-tab {
  position: relative;
  display: block;
  padding: 14px 16px 14px 58px;
  border: 1px solid var(--line);
  background: var(--ink-2);
  cursor: pointer;
  transition: border-color 180ms ease, background 180ms ease;
}

.page-products .mode-tab::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 220ms cubic-bezier(.2, .8, .3, 1);
}

.page-products .mode-num {
  position: absolute;
  left: 16px;
  top: 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--mute);
}

.page-products .mode-name {
  display: block;
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 600;
  color: var(--paper);
  line-height: 1.35;
}

.page-products .mode-hint {
  display: block;
  margin-top: 4px;
  font-size: 12.5px;
  color: var(--mute);
  line-height: 1.5;
}

.page-products .mode-tab:hover {
  border-color: var(--mint);
}

.page-products #xp-mode-league:checked ~ .mode-controls label[for="xp-mode-league"],
.page-products #xp-mode-time:checked ~ .mode-controls label[for="xp-mode-time"],
.page-products #xp-mode-metric:checked ~ .mode-controls label[for="xp-mode-metric"] {
  border-color: var(--orange);
  background: var(--orange-bg);
}

.page-products #xp-mode-league:checked ~ .mode-controls label[for="xp-mode-league"]::after,
.page-products #xp-mode-time:checked ~ .mode-controls label[for="xp-mode-time"]::after,
.page-products #xp-mode-metric:checked ~ .mode-controls label[for="xp-mode-metric"]::after {
  transform: scaleX(1);
}

.page-products #xp-mode-league:checked ~ .mode-controls label[for="xp-mode-league"] .mode-num,
.page-products #xp-mode-time:checked ~ .mode-controls label[for="xp-mode-time"] .mode-num,
.page-products #xp-mode-metric:checked ~ .mode-controls label[for="xp-mode-metric"] .mode-num {
  color: var(--orange);
}

.page-products .mode-radio:focus-visible + .mode-controls label {
  outline: none;
}

.page-products .mode-panels {
  margin-top: 16px;
  border: 1px solid var(--line);
  background: var(--ink-2);
  padding: 22px 18px 24px;
}

.page-products .mode-panel {
  display: none;
}

.page-products #xp-mode-league:checked ~ .mode-panels .mode-panel--league,
.page-products #xp-mode-time:checked ~ .mode-panels .mode-panel--time,
.page-products #xp-mode-metric:checked ~ .mode-panels .mode-panel--metric {
  display: block;
  animation: xpPanelIn 240ms cubic-bezier(.2, .8, .3, 1) both;
}

@keyframes xpPanelIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

.page-products .mode-panel h3 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 20px;
  line-height: 1.35;
  color: var(--paper);
  margin: 0 0 10px;
}

.page-products .mode-panel p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--paper);
  opacity: 0.82;
  margin: 0;
  max-width: 46ch;
}

.page-products .mode-facts {
  margin: 18px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 10px;
}

.page-products .mode-facts > div {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 14px;
}

.page-products .mode-facts dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mute);
  min-width: 7em;
}

.page-products .mode-facts dd {
  margin: 0;
  font-size: 14px;
  color: var(--paper);
}

.page-products .xp-figure {
  margin: 22px 0 0;
}

/* ---------- 九类维度 ---------- */

.page-products .metrics-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-bottom: 22px;
}

.page-products .metric-cell {
  position: relative;
  background: var(--ink-2);
  padding: 20px 18px 22px;
  transition: background 180ms ease;
}

.page-products .metric-cell::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--mint);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform 200ms cubic-bezier(.2, .8, .3, 1);
}

.page-products .metric-cell:hover,
.page-products .metric-cell:focus-within {
  background: var(--ink);
}

.page-products .metric-cell:hover::before,
.page-products .metric-cell:focus-within::before {
  transform: scaleY(1);
}

.page-products .metric-icon {
  display: block;
  color: var(--mint);
  margin-bottom: 12px;
  transition: color 180ms ease;
}

.page-products .metric-cell:hover .metric-icon {
  color: var(--orange);
}

.page-products .metric-idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mute);
  margin: 0 0 6px;
}

.page-products .metric-cell h3 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 18px;
  color: var(--paper);
  margin: 0 0 8px;
}

.page-products .metric-desc {
  font-size: 14px;
  line-height: 1.75;
  color: var(--mute);
  margin: 0;
}

/* ---------- iOS 四步路径 ---------- */

.page-products .ios-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-products .steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-products .step {
  position: relative;
  display: grid;
  grid-template-columns: var(--xp-rail) 1fr;
  gap: 16px;
  padding-bottom: 26px;
}

.page-products .step:last-child {
  padding-bottom: 0;
}

.page-products .step:not(:last-child)::before {
  content: "";
  position: absolute;
  left: calc(var(--xp-rail) / 2);
  top: calc(var(--xp-rail) + 6px);
  bottom: 6px;
  width: 1px;
  background: var(--line);
}

.page-products .step-num {
  grid-column: 1;
  width: var(--xp-rail);
  height: var(--xp-rail);
  display: grid;
  place-items: center;
  border: 1px solid var(--mint);
  background: var(--ink);
  color: var(--mint);
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.02em;
  transition: border-color 180ms ease, color 180ms ease, background 180ms ease;
}

.page-products .step:hover .step-num {
  border-color: var(--orange);
  color: var(--ink);
  background: var(--orange);
}

.page-products .step-body h3 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 18px;
  color: var(--paper);
  margin: 8px 0 6px;
}

.page-products .step-body p {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mute);
  margin: 0;
}

.page-products .ios-figure {
  margin: 0;
}

/* ---------- 专题深度分级 ---------- */

.page-products .depth-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-products .depth-layout .media-frame {
  margin: 0;
}

.page-products .depth-copy {
  display: grid;
  gap: 16px;
}

.page-products .depth-row {
  border: 1px solid var(--line);
  background: var(--ink-2);
  padding: 20px 18px;
}

.page-products .depth-row--deep {
  border-left: 3px solid var(--orange);
  background: linear-gradient(120deg, var(--orange-bg), var(--ink-2) 70%);
}

.page-products .depth-row h3 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 19px;
  color: var(--paper);
  margin: 12px 0 8px;
}

.page-products .depth-row p {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mute);
  margin: 0;
}

/* ---------- 收藏 ---------- */

.page-products .saved-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-products .saved-layout .media-frame {
  margin: 0;
}

.page-products .saved-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-products .saved-list li {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 14px;
  background: var(--ink-2);
  padding: 18px 16px;
  transition: background 180ms ease;
}

.page-products .saved-list li:hover {
  background: var(--ink);
}

.page-products .saved-mark {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border: 1px solid var(--blue);
  color: var(--blue);
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
}

.page-products .saved-list h3 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 17px;
  color: var(--paper);
  margin: 4px 0 6px;
}

.page-products .saved-list p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--mute);
  margin: 0;
}

/* ---------- 版本说明入口 ---------- */

.page-products .version-strip {
  display: grid;
  gap: 20px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--orange);
  background: linear-gradient(95deg, var(--orange-bg), var(--ink-2) 62%);
  padding: 24px 20px;
}

.page-products .version-main .meta {
  margin: 0;
}

.page-products .version-week {
  font-family: var(--font-mark);
  font-weight: 800;
  font-size: clamp(30px, 7vw, 44px);
  letter-spacing: -0.02em;
  line-height: 1.05;
  color: var(--paper);
  margin: 6px 0 10px;
}

.page-products .version-desc {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--paper);
  opacity: 0.8;
  margin: 0;
  max-width: 46ch;
}

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

.page-products .version-actions .btn {
  text-decoration: none;
}

/* ---------- 引用链接 ---------- */

.page-products .meta a {
  color: var(--mint);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: border-color 180ms ease, color 180ms ease;
}

.page-products .meta a:hover,
.page-products .meta a:focus-visible {
  color: var(--orange);
  border-color: var(--orange);
}

/* ---------- 断点 ---------- */

@media (min-width: 560px) {
  .page-products .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 720px) {
  .page-products .mode-controls {
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
  }

  .page-products .mode-tab {
    padding: 20px 16px 18px;
  }

  .page-products .mode-num {
    position: static;
    display: block;
    margin-bottom: 12px;
  }

  .page-products .mode-panels {
    padding: 28px 26px 30px;
  }

  .page-products .version-strip {
    grid-template-columns: 1fr auto;
    align-items: center;
    padding: 28px 26px;
  }

  .page-products .version-actions {
    flex-direction: column;
    align-items: stretch;
  }
}

@media (min-width: 900px) {
  .page-products .metrics-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-products .ios-layout {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 40px;
    align-items: start;
  }

  .page-products .depth-layout {
    grid-template-columns: 0.82fr 1.18fr;
    gap: 36px;
    align-items: start;
  }

  .page-products .saved-layout {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 32px;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .mode-panel,
  .page-products .mode-tab::after,
  .page-products .metric-cell::before,
  .page-products .step-num {
    animation: none !important;
    transition: none !important;
  }

  .page-products #xp-mode-league:checked ~ .mode-panels .mode-panel--league,
  .page-products #xp-mode-time:checked ~ .mode-panels .mode-panel--time,
  .page-products #xp-mode-metric:checked ~ .mode-panels .mode-panel--metric {
    transform: none;
  }
}