.page-products {
  --pp-gap: 20px;
}

/* ---------- 首屏 ---------- */

.page-products .prod-hero {
  padding: 26px 0 6px;
}

.page-products .prod-hero .page-lead {
  max-width: 64ch;
  font-size: 17px;
  line-height: 1.78;
  color: var(--muted);
}

.page-products .prod-hero .tag-row {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* ---------- 功能索引 ---------- */

.page-products .prod-index {
  padding: 14px 0 4px;
}

.page-products .func-index {
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--surface);
  overflow: hidden;
}

.page-products .func-index__head {
  margin: 0;
  padding: 11px 16px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-products .func-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
}

.page-products .func-index__link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 11px 16px;
  border-top: 1px solid var(--line);
  color: var(--text);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.5;
  transition: background 0.16s ease-out;
}

.page-products .func-index__list > li:first-child .func-index__link {
  border-top: 0;
}

.page-products .func-index__link:hover,
.page-products .func-index__link:focus-visible {
  background: var(--red-soft);
}

.page-products .func-index__link:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: -2px;
}

.page-products .func-index__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--red);
}

/* ---------- 功能块容器 ---------- */

.page-products .prod-stream {
  padding: 26px 0 6px;
}

.page-products .func-grid {
  display: grid;
  gap: var(--pp-gap);
}

.page-products .func-duo,
.page-products .func-trio,
.page-products .func-stack {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--pp-gap);
}

.page-products .func-stack {
  max-width: 880px;
}

/* ---------- 功能卡 ---------- */

.page-products .func-card {
  position: relative;
  min-width: 0;
  overflow: hidden;
  padding: 22px 18px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 4px;
  transition: transform 0.18s ease-out, border-color 0.18s ease-out;
}

.page-products .func-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 56px;
  height: 4px;
  background: var(--red);
}

.page-products .func-card--gold::before { background: var(--gold); }
.page-products .func-card--mint::before { background: var(--mint); }
.page-products .func-card--ink::before  { background: var(--ink); }

.page-products .func-card:hover {
  transform: translateY(-2px);
  border-color: var(--red);
}

.page-products .func-card__meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.page-products .func-card__num {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--red);
}

.page-products .func-card__glyph {
  width: 9px;
  height: 9px;
  background: var(--red);
  transform: rotate(45deg);
}

.page-products .func-card--gold .func-card__glyph { background: var(--gold); }
.page-products .func-card--mint .func-card__glyph { background: var(--mint); }
.page-products .func-card--ink .func-card__glyph  { background: var(--ink); }

.page-products .func-card__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  line-height: 1.36;
  color: var(--text);
}

.page-products .func-card p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

.page-products .func-card p.func-card__lead {
  color: var(--text);
  font-size: 15.5px;
}

.page-products .func-card p.func-card__tip {
  margin-bottom: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--graphite);
}

.page-products .func-card a {
  color: var(--red);
  font-weight: 700;
  text-underline-offset: 3px;
}

.page-products .func-card__list {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-products .func-card__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--muted);
}

.page-products .func-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 8px;
  height: 1px;
  background: var(--red);
}

.page-products .func-card img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  margin: 14px 0 16px;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: var(--red-soft);
  object-fit: cover;
}

.page-products .func-card img.func-card__media--square {
  max-width: 420px;
}

/* ---------- 新旧导航对比 ---------- */

.page-products .compare {
  display: grid;
  grid-template-columns: 1fr;
  margin: 16px 0;
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
}

.page-products .compare__side {
  padding: 14px 14px 12px;
}

.page-products .compare__side--old {
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.page-products .compare__side--new {
  background: var(--ink);
  color: var(--on-dark);
}

.page-products .compare__label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.page-products .compare__side--old .compare__label { color: var(--graphite); }
.page-products .compare__side--new .compare__label { color: var(--on-dark-muted); }

.page-products .func-card .compare__note {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.65;
}

.page-products .compare__side--old .compare__note { color: var(--graphite); }
.page-products .compare__side--new .compare__note { color: var(--on-dark-muted); }

.page-products .wire {
  display: grid;
  gap: 6px;
}

.page-products .wire__bar {
  display: block;
  height: 9px;
  border: 1px dashed var(--mist);
  border-radius: 2px;
}

.page-products .wire__bar:nth-child(1) { width: 100%; }
.page-products .wire__bar:nth-child(2) { width: 74%; }
.page-products .wire__bar:nth-child(3) { width: 56%; }
.page-products .wire__bar:nth-child(4) { width: 38%; }

.page-products .tagwall {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}

.page-products .tagwall__chip {
  display: block;
  height: 22px;
  border-radius: 2px;
}

.page-products .tagwall__chip--red  { background: var(--red); }
.page-products .tagwall__chip--gold { background: var(--gold); }
.page-products .tagwall__chip--mint { background: var(--mint); }
.page-products .tagwall__chip--dim  { background: rgba(247, 245, 242, 0.22); }

/* ---------- 三条路径 ---------- */

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

.page-products .route-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.page-products .route-list__k {
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 3px;
  background: var(--gold-soft);
  color: var(--gold-text);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
}

.page-products .func-card .route-list strong {
  display: block;
  margin-bottom: 2px;
  font-size: 14.5px;
  font-weight: 800;
  color: var(--text);
}

.page-products .func-card .route-list p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.66;
}

/* ---------- 导出时间轴 ---------- */

.page-products .export-axis {
  display: grid;
  gap: 10px;
  margin: 4px 0 6px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--gold-soft);
}

.page-products .export-axis__row {
  display: grid;
  grid-template-columns: 84px 1fr;
  align-items: center;
  gap: 10px;
}

.page-products .export-axis__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--gold-text);
}

.page-products .export-axis__track {
  display: block;
  min-width: 0;
}

.page-products .export-axis__bar {
  display: block;
  height: 12px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--gold) 0%, var(--gold-soft) 100%);
  transition: filter 0.16s ease-out, transform 0.16s ease-out;
  transform-origin: left center;
}

.page-products .export-axis__bar--a { width: 100%; }
.page-products .export-axis__bar--b { width: 76%; }
.page-products .export-axis__bar--c { width: 54%; }

.page-products .export-axis__row:hover .export-axis__bar,
.page-products .export-axis__row:focus-within .export-axis__bar {
  filter: brightness(1.05) saturate(1.15);
  transform: scaleX(1.02);
}

/* ---------- 账户设置 ---------- */

.page-products .setup {
  list-style: none;
  margin: 12px 0 14px;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-products .setup__item {
  position: relative;
  padding: 14px 14px 12px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--bg);
}

.page-products .setup__item::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -12px;
  width: 1px;
  height: 12px;
  background: var(--mist);
}

.page-products .setup__item:last-child::after { display: none; }

.page-products .setup__num {
  display: inline-block;
  margin-bottom: 8px;
  padding: 2px 8px;
  border-radius: 2px;
  background: var(--mint);
  color: var(--ink-deep);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.page-products .setup__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  color: var(--text);
}

.page-products .func-card .setup__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
}

/* ---------- 主题色板 ---------- */

.page-products .swatch-row {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0 14px;
  padding: 0;
}

.page-products .swatch {
  width: 46px;
  height: 46px;
  border: 1px solid var(--line);
  border-radius: 3px;
}

.page-products .swatch--red   { background: var(--red); }
.page-products .swatch--gold  { background: var(--gold); }
.page-products .swatch--ink   { background: var(--ink-deep); }
.page-products .swatch--mint  { background: var(--mint); }
.page-products .swatch--soft  { background: var(--red-soft); }
.page-products .swatch--pale  { background: var(--gold-soft); }

/* ---------- 收尾 ---------- */

.page-products .prod-cta {
  padding: 32px 0 56px;
}

.page-products .cta-panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  padding: 24px 20px;
  border: 1px solid var(--line);
  border-left: 4px solid var(--red);
  border-radius: 4px;
  background: var(--surface);
}

.page-products .cta-panel__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 800;
  line-height: 1.35;
  color: var(--text);
}

.page-products .cta-panel p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

.page-products .cta-panel a {
  color: var(--red);
  font-weight: 700;
  text-underline-offset: 3px;
}

.page-products .cta-panel__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: flex-start;
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-products .compare {
    grid-template-columns: 1fr 1fr;
  }

  .page-products .compare__side--old {
    border-bottom: 0;
    border-right: 1px solid var(--line);
  }

  .page-products .setup {
    grid-template-columns: 1fr 1fr;
  }

  .page-products .setup__item::after {
    left: auto;
    right: -12px;
    top: 50%;
    bottom: auto;
    width: 12px;
    height: 1px;
  }
}

@media (min-width: 760px) {
  .page-products .func-index__list {
    grid-template-columns: 1fr 1fr;
  }

  .page-products .func-index__list > li:nth-child(2) .func-index__link {
    border-top: 0;
  }

  .page-products .func-index__list > li:nth-child(even) .func-index__link {
    border-left: 1px solid var(--line);
  }
}

@media (min-width: 900px) {
  .page-products .prod-hero {
    padding-top: 36px;
  }

  .page-products .func-duo {
    grid-template-columns: 1fr 1fr;
  }

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

  .page-products .func-trio > *:nth-child(2) {
    margin-top: 28px;
  }

  .page-products .func-trio > *:nth-child(3) {
    margin-top: 56px;
  }

  .page-products .cta-panel {
    grid-template-columns: 1fr auto;
    align-items: center;
    padding: 30px 28px;
  }

  .page-products .cta-panel__actions {
    flex-wrap: nowrap;
  }
}

@media (min-width: 1100px) {
  .page-products .func-card__title {
    font-size: 21px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .func-card,
  .page-products .export-axis__bar,
  .page-products .func-index__link {
    transition: none;
  }

  .page-products .func-card:hover {
    transform: none;
  }

  .page-products .export-axis__row:hover .export-axis__bar {
    transform: none;
  }
}
<<<END>>>