.page-products {
  --pp-lane: 182px;
  --pp-gap: clamp(20px, 3.6vw, 44px);
  padding-bottom: clamp(56px, 9vw, 110px);
  overflow-x: clip;
}

/* ============ 首屏 ============ */
.page-products .func-hero {
  position: relative;
  isolation: isolate;
  padding: calc(var(--header-h) + clamp(22px, 5vw, 58px)) 0 clamp(30px, 5vw, 62px);
}

.page-products .func-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -12%;
  right: -8%;
  width: min(62vw, 700px);
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle at 34% 34%, rgba(41, 242, 192, 0.20), rgba(255, 90, 46, 0.10) 46%, transparent 72%);
  border-radius: 44% 56% 46% 54% / 56% 42% 58% 44%;
  transform: rotate(-16deg);
  pointer-events: none;
}

.page-products .func-hero .breadcrumb {
  margin-bottom: clamp(22px, 4vw, 44px);
}

.page-products .func-hero h1 {
  margin: 14px 0 0;
  max-width: 15ch;
  font-size: clamp(36px, 7.6vw, 84px);
  line-height: 1.04;
  font-weight: 900;
  letter-spacing: -0.025em;
  color: var(--text);
}

.page-products .func-hero__lede {
  margin: 20px 0 0;
  max-width: 58ch;
  font-size: clamp(15px, 1.1vw, 17px);
  line-height: 1.85;
  color: var(--muted);
}

.page-products .func-hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 22px;
  margin-top: 28px;
}

.page-products .func-hero__textlink {
  color: var(--accent-soft);
  font-size: 14px;
  text-decoration: underline;
  text-underline-offset: 5px;
  text-decoration-thickness: 1px;
}

.page-products .func-hero__textlink:hover,
.page-products .func-hero__textlink:focus-visible {
  color: var(--accent);
}

.page-products .func-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 32px;
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

.page-products .func-hero__meta .mono {
  margin-right: 6px;
  font-size: 19px;
  font-weight: 700;
  color: var(--accent);
}

/* ============ 双栏骨架 ============ */
.page-products .func-layout {
  display: grid;
  gap: var(--pp-gap);
  padding-top: clamp(20px, 3.5vw, 40px);
}

.page-products .func-lane {
  border-top: 1px solid var(--line);
  padding-top: 12px;
}

.page-products .func-lane__title {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-products .func-lane__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-products .func-lane__list li {
  flex: 0 0 auto;
}

.page-products .func-lane__list a {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 9px 15px;
  border-radius: var(--r-pill);
  border: 1px solid rgba(42, 60, 70, 0.9);
  background: rgba(10, 47, 38, 0.6);
  color: var(--muted);
  font-size: 14px;
  white-space: nowrap;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-products .func-lane__list a .mono {
  font-size: 11px;
  color: var(--slate);
}

.page-products .func-lane__list a:hover,
.page-products .func-lane__list a:focus-visible {
  color: var(--text);
  border-color: rgba(41, 242, 192, 0.5);
}

.page-products .func-lane__list a[aria-current="true"] {
  color: var(--ink-900);
  background: var(--accent);
  border-color: var(--accent);
}

.page-products .func-lane__list a[aria-current="true"] .mono {
  color: rgba(4, 35, 27, 0.6);
}

/* ============ 功能块通用 ============ */
.page-products .func-main {
  min-width: 0;
}

.page-products .func-block {
  border-radius: var(--r-lg);
  margin: 0 0 clamp(20px, 3.4vw, 38px);
  padding: clamp(22px, 3.4vw, 42px);
}

.page-products .func-block:last-of-type {
  margin-bottom: 0;
}

.page-products .func-num {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.26em;
  color: var(--accent);
}

.page-products .func-block h2 {
  margin: 0;
  font-size: clamp(23px, 3.4vw, 36px);
  line-height: 1.22;
  font-weight: 800;
  letter-spacing: -0.015em;
  color: var(--text);
}

.page-products .func-lede {
  max-width: 62ch;
  margin: 16px 0 0;
  font-size: clamp(15px, 1.05vw, 16.5px);
  line-height: 1.85;
  color: var(--muted);
}

.page-products .func-note {
  max-width: 66ch;
  margin: 22px 0 0;
  padding-left: 16px;
  border-left: 2px solid rgba(41, 242, 192, 0.45);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-products .func-note b {
  color: var(--hot);
  font-weight: 700;
}

.page-products .func-copy p {
  max-width: 60ch;
  margin: 0 0 14px;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--muted);
}

.page-products .func-copy p:last-child {
  margin-bottom: 0;
}

/* 窄块与宽块交替 */
.page-products .func-block--narrow {
  background: var(--panel);
  border: 1px solid rgba(42, 60, 70, 0.55);
}

.page-products .func-block--wide {
  background: linear-gradient(170deg, rgba(10, 47, 38, 0.92), rgba(4, 35, 27, 0.35));
  border: 1px solid rgba(42, 60, 70, 0.4);
}

.page-products .func-block--plain {
  background: transparent;
  border: 1px solid rgba(42, 60, 70, 0.4);
  border-radius: var(--r-lg);
}

/* ============ 图文分栏 ============ */
.page-products .func-split {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
  margin-top: 22px;
}

.page-products .func-fig {
  margin: 0;
}

.page-products .func-fig--wide {
  margin-top: 24px;
}

.page-products .func-fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--r-md);
  border: 1px solid rgba(41, 242, 192, 0.14);
  background: var(--ink-850);
}

.page-products .func-fig figcaption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--slate);
}

/* ============ 字段清单 ============ */
.page-products .field-list {
  list-style: none;
  margin: 20px 0 0;
  padding: 1px;
  display: grid;
  gap: 1px;
  background: var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-products .field-list li {
  display: grid;
  grid-template-columns: minmax(64px, 84px) 1fr;
  gap: 12px;
  align-items: baseline;
  padding: 12px 15px;
  background: var(--ink-850);
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--text);
}

.page-products .field-key {
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--accent);
}

/* ============ 赛季 / 阶段切换 ============ */
.page-products .season-switch,
.page-products .stage-switch {
  position: relative;
  margin-top: 24px;
}

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

.page-products .season-tabs,
.page-products .stage-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.page-products .season-tab,
.page-products .stage-tab {
  cursor: pointer;
  padding: 9px 18px;
  border-radius: var(--r-pill);
  border: 1px solid rgba(166, 186, 194, 0.22);
  color: var(--muted);
  font-size: 14px;
  line-height: 1.4;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-products .season-tab:hover,
.page-products .stage-tab:hover {
  color: var(--text);
  border-color: rgba(41, 242, 192, 0.45);
}

.page-products .season-radio:focus-visible + .season-tab,
.page-products .stage-radio:focus-visible + .stage-tab {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.page-products .season-panel,
.page-products .stage-panel {
  display: none;
  padding: 18px 20px;
  border-radius: var(--r-md);
  background: rgba(4, 35, 27, 0.72);
  border-left: 3px solid var(--hot);
}

.page-products .season-panel p,
.page-products .stage-panel p {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
}

.page-products #season-a:checked ~ .season-tabs .season-tab[for="season-a"],
.page-products #season-b:checked ~ .season-tabs .season-tab[for="season-b"],
.page-products #season-c:checked ~ .season-tabs .season-tab[for="season-c"],
.page-products #stage-1:checked ~ .stage-tabs .stage-tab[for="stage-1"],
.page-products #stage-2:checked ~ .stage-tabs .stage-tab[for="stage-2"],
.page-products #stage-3:checked ~ .stage-tabs .stage-tab[for="stage-3"],
.page-products #stage-4:checked ~ .stage-tabs .stage-tab[for="stage-4"] {
  color: var(--ink-900);
  background: var(--accent);
  border-color: var(--accent);
  font-weight: 700;
}

.page-products #season-a:checked ~ .season-panels .season-panel[data-panel="season-a"],
.page-products #season-b:checked ~ .season-panels .season-panel[data-panel="season-b"],
.page-products #season-c:checked ~ .season-panels .season-panel[data-panel="season-c"],
.page-products #stage-1:checked ~ .stage-panels .stage-panel[data-panel="stage-1"],
.page-products #stage-2:checked ~ .stage-panels .stage-panel[data-panel="stage-2"],
.page-products #stage-3:checked ~ .stage-panels .stage-panel[data-panel="stage-3"],
.page-products #stage-4:checked ~ .stage-panels .stage-panel[data-panel="stage-4"] {
  display: block;
}

/* ============ 多端要点 ============ */
.page-products .device-points {
  display: grid;
  gap: 14px;
  margin-top: 26px;
}

.page-products .device-point {
  padding: 20px 20px 18px;
  border-radius: var(--r-md);
  background: rgba(14, 58, 48, 0.55);
  border-top: 2px solid rgba(41, 242, 192, 0.35);
}

.page-products .device-point h3 {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 800;
  color: var(--accent-soft);
}

.page-products .device-point p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

/* ============ 版本轴 ============ */
.page-products .version-axis {
  display: grid;
  gap: 14px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-products .version-node {
  position: relative;
  padding: 20px 20px 18px 34px;
  border-radius: var(--r-md);
  background: rgba(10, 47, 38, 0.75);
  border-left: 1px solid rgba(42, 60, 70, 0.9);
}

.page-products .version-mark {
  position: absolute;
  left: 15px;
  top: 25px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent);
}

.page-products .version-node--major {
  background: rgba(14, 58, 48, 0.9);
  border-left: 2px solid var(--hot);
}

.page-products .version-node--major .version-mark {
  width: 13px;
  height: 13px;
  left: 13px;
  top: 23px;
  background: var(--hot);
}

.page-products .version-node h3 {
  margin: 0 0 8px;
  font-size: 16.5px;
  font-weight: 800;
  color: var(--text);
}

.page-products .version-node p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--muted);
}

/* ============ 收尾 ============ */
.page-products .func-cta {
  margin-top: clamp(24px, 4vw, 48px);
  padding: clamp(26px, 4vw, 46px);
  border-radius: var(--r-lg);
  background: linear-gradient(120deg, rgba(41, 242, 192, 0.13), rgba(255, 90, 46, 0.10) 62%, rgba(4, 35, 27, 0.2));
  border: 1px solid rgba(41, 242, 192, 0.2);
}

.page-products .func-cta h2 {
  margin: 0;
  font-size: clamp(23px, 3.2vw, 32px);
  font-weight: 800;
  letter-spacing: -0.015em;
  color: var(--text);
}

.page-products .func-cta p {
  max-width: 56ch;
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.page-products .func-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* ============ 响应式 ============ */
@media (min-width: 760px) {
  .page-products .func-split--media-right {
    grid-template-columns: minmax(0, 1fr) minmax(230px, 320px);
    align-items: start;
  }

  .page-products .func-split--media-left {
    grid-template-columns: minmax(230px, 320px) minmax(0, 1fr);
    align-items: start;
  }

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

  .page-products .version-axis {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .page-products .func-layout {
    grid-template-columns: var(--pp-lane) minmax(0, 1fr);
    align-items: start;
  }

  .page-products .func-lane {
    position: sticky;
    top: calc(var(--header-h) + 26px);
    border-top: none;
    padding-top: 0;
    border-left: 1px solid var(--line);
    padding-left: 16px;
  }

  .page-products .func-lane__list {
    flex-direction: column;
    gap: 6px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-products .func-lane__list a {
    display: flex;
    width: 100%;
    border-radius: var(--r-sm);
    border-color: transparent;
    background: transparent;
    white-space: normal;
  }

  .page-products .func-lane__list a[aria-current="true"] {
    background: rgba(41, 242, 192, 0.14);
    color: var(--accent);
    border-color: rgba(41, 242, 192, 0.4);
  }

  .page-products .func-lane__list a[aria-current="true"] .mono {
    color: var(--accent);
  }

  .page-products .version-axis {
    grid-auto-flow: column;
    grid-auto-columns: minmax(0, 1fr);
    grid-template-columns: none;
    gap: 10px;
    align-items: stretch;
  }

  .page-products .version-node {
    padding: 42px 18px 20px;
    border-left: none;
    border-top: 1px solid rgba(42, 60, 70, 0.9);
  }

  .page-products .version-mark {
    left: 18px;
    top: 20px;
  }

  .page-products .version-node--major {
    border-left: none;
    border-top: 2px solid var(--hot);
  }

  .page-products .version-node--major .version-mark {
    left: 18px;
    top: 18px;
  }
}

@media (min-width: 1280px) {
  .page-products .func-block--wide {
    padding: clamp(30px, 3.4vw, 50px) clamp(30px, 3.6vw, 54px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .season-tab,
  .page-products .stage-tab,
  .page-products .func-lane__list a {
    transition: none;
  }
}