.page-products {
  --pd-seam: 1px solid var(--rule);
  --pd-gap: clamp(1.5rem, 4vw, 2.75rem);
  background: var(--frost);
  color: var(--body);
}

.page-products [data-season="spring"] {
  --season: var(--spring);
  --season-accent: var(--spring-accent);
}
.page-products [data-season="summer"] {
  --season: var(--summer);
  --season-accent: var(--summer-accent);
}
.page-products [data-season="autumn"] {
  --season: var(--autumn);
  --season-accent: var(--autumn-accent);
}
.page-products [data-season="winter"] {
  --season: var(--winter);
  --season-accent: var(--paper);
}

.page-products img {
  max-width: 100%;
  height: auto;
}

/* ---------- 首屏服务目录 ---------- */

.page-products .pd-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pd-gap);
  align-items: start;
}

.page-products .pd-hero__lead {
  display: grid;
  gap: 1.1rem;
  align-content: start;
  min-width: 0;
}

.page-products .pd-hero__lead h1 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(1.85rem, 5.2vw, 3.25rem);
  line-height: 1.24;
  letter-spacing: 0.01em;
  color: var(--winter);
  overflow-wrap: break-word;
}

.page-products .pd-jump {
  list-style: none;
  margin: 0.4rem 0 0;
  padding: 0;
  border-top: var(--pd-seam);
  display: grid;
}

.page-products .pd-jump li {
  border-bottom: var(--pd-seam);
}

.page-products .pd-jump a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0.15rem;
  color: var(--winter);
  font-weight: 600;
  text-decoration: none;
}

.page-products .pd-jump a::after {
  content: "↘";
  font-family: var(--font-mono);
  font-size: 0.95em;
  color: var(--season);
  transition: transform 0.18s ease;
}

.page-products .pd-jump a:hover::after,
.page-products .pd-jump a:focus-visible::after {
  transform: translate(3px, 3px);
}

.page-products .pd-jump a:focus-visible {
  outline: 3px solid var(--season-accent);
  outline-offset: 2px;
}

.page-products .pd-hero__note {
  margin: 0;
  padding-left: 0.9rem;
  border-left: 3px solid var(--season);
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-products .pd-hero__note a {
  color: var(--winter);
  font-weight: 600;
  text-decoration-color: var(--season);
  text-underline-offset: 3px;
}

.page-products .pd-hero__figure {
  margin: 0;
}

.page-products .pd-hero__figure img {
  width: 100%;
  display: block;
  border: var(--pd-seam);
  background: var(--paper);
}

/* ---------- 标签页 ---------- */

.page-products .pd-tabs {
  margin-top: clamp(1.5rem, 4vw, 2.5rem);
}

.page-products .sk-tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0 0 1.25rem;
  padding: 0;
}

.page-products .sk-tabs__button {
  --tab-color: var(--summer);
  font: inherit;
  font-weight: 600;
  color: var(--winter);
  background: var(--paper);
  border: var(--pd-seam);
  border-bottom: 3px solid var(--tab-color);
  padding: 0.65rem 1rem;
  cursor: pointer;
  transition: background-color 0.18s ease, color 0.18s ease;
}

.page-products .sk-tabs__button[data-season="spring"] { --tab-color: var(--spring); }
.page-products .sk-tabs__button[data-season="summer"] { --tab-color: var(--summer); }
.page-products .sk-tabs__button[data-season="autumn"] { --tab-color: var(--autumn); }
.page-products .sk-tabs__button[data-season="winter"] { --tab-color: var(--winter); }

.page-products .sk-tabs__button[aria-selected="true"] {
  background: var(--tab-color);
  border-color: var(--tab-color);
  color: var(--paper);
}

.page-products .sk-tabs__button:focus-visible {
  outline: 3px solid var(--season-accent);
  outline-offset: 2px;
}

.page-products .sk-tabs__panel {
  background: var(--paper);
  border: var(--pd-seam);
  border-top: 4px solid var(--season);
  padding: clamp(1.25rem, 3.5vw, 2.25rem);
  min-width: 0;
}

.page-products .sk-tabs__panel:focus-visible {
  outline: 3px solid var(--season-accent);
  outline-offset: 2px;
}

.page-products .pd-panel__title {
  margin: 0 0 0.7rem;
  font-family: var(--font-serif);
  font-size: clamp(1.2rem, 2.6vw, 1.55rem);
  line-height: 1.4;
  color: var(--winter);
}

.page-products .pd-panel__lead {
  margin: 0 0 1.1rem;
  max-width: 44em;
  line-height: 1.8;
}

.page-products .pd-points {
  list-style: none;
  margin: 0 0 1.3rem;
  padding: 0;
  display: grid;
  gap: 0.65rem;
}

.page-products .pd-points li {
  position: relative;
  padding-left: 1.5rem;
  font-size: 0.9375rem;
  line-height: 1.78;
}

.page-products .pd-points li::before {
  content: "";
  position: absolute;
  left: 0.2rem;
  top: 0.62rem;
  width: 0.5rem;
  height: 0.5rem;
  background: var(--season);
  transform: rotate(45deg);
}

.page-products .pd-panel__link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding-bottom: 0.15rem;
  color: var(--winter);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 2px solid var(--season);
}

.page-products .pd-panel__link::after {
  content: "→";
  font-family: var(--font-mono);
}

.page-products .pd-panel__link:focus-visible {
  outline: 3px solid var(--season-accent);
  outline-offset: 3px;
}

/* ---------- 登录与账户：技能树 ---------- */

.page-products .pd-tree__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pd-gap);
  margin-top: clamp(1.5rem, 4vw, 2.5rem);
  align-items: start;
}

.page-products .pd-trunk {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
  min-width: 0;
}

.page-products .pd-trunk::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 1.2rem;
  bottom: 1.2rem;
  width: 2px;
  background: linear-gradient(
    to bottom,
    var(--spring) 0%,
    var(--summer) 38%,
    var(--autumn) 72%,
    var(--winter) 100%
  );
}

.page-products .pd-trunk__step {
  position: relative;
  padding: 0 0 2rem 2.75rem;
}

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

.page-products .pd-trunk__step::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 0.35rem;
  width: 16px;
  height: 16px;
  box-sizing: border-box;
  border-radius: 50%;
  background: var(--frost);
  border: 2px solid var(--season);
}

.page-products .pd-trunk__title {
  margin: 0 0 0.45rem;
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 2.4vw, 1.3rem);
  line-height: 1.45;
  color: var(--winter);
}

.page-products .pd-trunk__step p {
  margin: 0;
  max-width: 40em;
  font-size: 0.9375rem;
  line-height: 1.8;
}

.page-products .pd-branch {
  display: grid;
  gap: 1.25rem;
  align-content: start;
  min-width: 0;
}

.page-products .pd-branch__figure {
  margin: 0;
}

.page-products .pd-branch__figure img {
  width: 100%;
  display: block;
  border: var(--pd-seam);
  background: var(--paper);
}

.page-products .pd-branch__card {
  border: var(--pd-seam);
  border-left: 4px solid var(--summer);
  background: var(--paper);
  padding: 1.1rem 1.25rem;
}

.page-products .pd-branch__label {
  margin: 0 0 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--summer);
}

.page-products .pd-branch__card p:last-child {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.78;
}

/* ---------- 会员中心切换 ---------- */

.page-products .pd-switch__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pd-gap);
  margin-top: clamp(1.5rem, 4vw, 2.5rem);
  align-items: start;
}

.page-products .pd-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.9rem;
  min-width: 0;
}

.page-products .pd-step {
  --step-color: var(--summer);
  border: var(--pd-seam);
  background: var(--paper);
  padding: 1.25rem 1.35rem 1.4rem;
}

.page-products .pd-steps > .pd-step:nth-child(1) { --step-color: var(--spring); }
.page-products .pd-steps > .pd-step:nth-child(2) { --step-color: var(--summer); }
.page-products .pd-steps > .pd-step:nth-child(3) { --step-color: var(--autumn); }

.page-products .pd-step__num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--paper);
  background: var(--step-color);
  padding: 0.22rem 0.6rem;
}

.page-products .pd-step__title {
  margin: 0.75rem 0 0.5rem;
  font-family: var(--font-serif);
  font-size: 1.18rem;
  line-height: 1.45;
  color: var(--winter);
}

.page-products .pd-step p {
  margin: 0 0 0.7rem;
  font-size: 0.9375rem;
  line-height: 1.8;
}

.page-products .pd-step__meta {
  margin: 0;
  padding-top: 0.7rem;
  border-top: 1px dashed var(--rule);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--muted);
}

.page-products .pd-switch__side {
  display: grid;
  gap: 1.25rem;
  align-content: start;
  min-width: 0;
}

.page-products .pd-switch__figure {
  margin: 0;
}

.page-products .pd-switch__figure img {
  width: 100%;
  display: block;
  border: var(--pd-seam);
  background: var(--paper);
}

.page-products .pd-progress {
  border: var(--pd-seam);
  background: var(--paper);
  padding: 1.25rem;
}

.page-products .pd-progress__title {
  margin: 0 0 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-products .pd-progress__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
}

.page-products .pd-progress__item {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.6rem 0;
  border-bottom: 1px dashed var(--rule);
  font-size: 0.9375rem;
  color: var(--muted);
}

.page-products .pd-progress__item:last-child {
  border-bottom: none;
}

.page-products .pd-progress__dot {
  flex: none;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid var(--rule);
  box-sizing: border-box;
}

.page-products .pd-progress__item[data-active="true"] {
  color: var(--winter);
  font-weight: 600;
}

.page-products .pd-progress__item[data-active="true"] .pd-progress__dot {
  border-color: var(--summer);
  background: var(--summer);
}

.page-products .pd-progress__foot {
  margin: 1rem 0 0;
  padding-top: 0.9rem;
  border-top: var(--pd-seam);
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 旧版设备版本说明 ---------- */

.page-products .pd-lookup {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
  margin: clamp(1.5rem, 4vw, 2.25rem) 0;
}

.page-products .pd-lookup__card {
  border: var(--pd-seam);
  border-top: 4px solid var(--season);
  background: var(--paper);
  padding: 1.2rem 1.3rem;
}

.page-products .pd-steps > .pd-lookup__card:nth-child(n) { --step-color: var(--autumn); }

.page-products .pd-lookup__card:nth-child(1) { border-top-color: var(--spring); }
.page-products .pd-lookup__card:nth-child(2) { border-top-color: var(--summer); }
.page-products .pd-lookup__card:nth-child(3) { border-top-color: var(--autumn); }

.page-products .pd-lookup__title {
  margin: 0 0 0.5rem;
  font-family: var(--font-serif);
  font-size: 1.12rem;
  color: var(--winter);
}

.page-products .pd-lookup__card p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.78;
}

.page-products .pd-legacy__figure {
  margin: 0 0 clamp(1.5rem, 4vw, 2.25rem);
}

.page-products .pd-legacy__figure img {
  width: 100%;
  display: block;
  border: var(--pd-seam);
  background: var(--paper);
}

.page-products .pd-legacy__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pd-gap);
  align-items: start;
}

.page-products .pd-docs__heading {
  margin: 0 0 1rem;
  font-family: var(--font-serif);
  font-size: clamp(1.15rem, 2.4vw, 1.35rem);
  color: var(--winter);
}

.page-products .sk-disclosure {
  border: var(--pd-seam);
  background: var(--paper);
  margin-bottom: 0.75rem;
}

.page-products .sk-disclosure:last-child {
  margin-bottom: 0;
}

.page-products .sk-disclosure__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.95rem 1.1rem;
  cursor: pointer;
  font-weight: 600;
  color: var(--winter);
  list-style: none;
}

.page-products .sk-disclosure__summary::-webkit-details-marker {
  display: none;
}

.page-products .sk-disclosure__summary::after {
  content: "+";
  font-family: var(--font-mono);
  color: var(--autumn);
}

.page-products .sk-disclosure[open] .sk-disclosure__summary::after {
  content: "–";
}

.page-products .sk-disclosure__summary:focus-visible {
  outline: 3px solid var(--autumn-accent);
  outline-offset: -3px;
}

.page-products .sk-disclosure__body {
  padding: 0 1.1rem 1.1rem;
}

.page-products .sk-disclosure__body p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.85;
}

.page-products .pd-legacy__aside {
  border: var(--pd-seam);
  background: var(--paper);
  padding: 1.3rem 1.35rem;
}

.page-products .pd-legacy__aside-title {
  margin: 0 0 1rem;
  font-family: var(--font-serif);
  font-size: 1.12rem;
  color: var(--winter);
}

.page-products .pd-legacy__aside .pd-points {
  margin-bottom: 1rem;
}

.page-products .pd-legacy__aside-foot {
  margin: 0;
  padding-top: 0.9rem;
  border-top: 1px dashed var(--rule);
  font-size: 0.875rem;
  line-height: 1.78;
  color: var(--muted);
}

.page-products .pd-legacy__aside-foot a {
  color: var(--winter);
  font-weight: 600;
  text-decoration-color: var(--autumn);
  text-underline-offset: 3px;
}

/* ---------- 服务级别与支持时间 ---------- */

.page-products .pd-support__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pd-gap);
  margin-top: clamp(1.5rem, 4vw, 2.25rem);
  align-items: start;
}

.page-products .pd-stats {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.9rem;
}

.page-products .pd-stat {
  border: var(--pd-seam);
  background: var(--paper);
  padding: 1.1rem 1.2rem;
}

.page-products .pd-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 3vw, 2rem);
  line-height: 1.15;
  color: var(--winter);
}

.page-products .pd-stat__label {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-products .pd-support__figure {
  margin: 0;
}

.page-products .pd-support__figure img {
  width: 100%;
  display: block;
  border: var(--pd-seam);
  background: var(--paper);
}

.page-products .pd-audience {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.25rem;
  margin-top: clamp(1.5rem, 4vw, 2.25rem);
}

.page-products .pd-audience__item {
  border-top: 3px solid var(--season);
  padding-top: 1rem;
}

.page-products .pd-audience__item:nth-child(2) {
  border-top-color: var(--rule);
}

.page-products .pd-audience__title {
  margin: 0 0 0.5rem;
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--winter);
}

.page-products .pd-audience__item p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
}

.page-products .pd-closing {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.2rem 1.75rem;
  margin-top: clamp(1.75rem, 4vw, 2.5rem);
  padding: 1.3rem 1.4rem;
  border: var(--pd-seam);
  border-left: 6px solid var(--season);
  background: var(--paper);
}

.page-products .pd-closing__text {
  flex: 1 1 22rem;
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-products .pd-closing__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 0;
}

/* ---------- 响应式 ---------- */

@media (min-width: 560px) {
  .page-products .pd-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-products .pd-lookup {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-products .pd-audience {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-products .pd-hero__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }
  .page-products .pd-tree__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  }
  .page-products .pd-legacy__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.65fr);
  }
  .page-products .pd-support__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.82fr);
  }
}

@media (min-width: 940px) {
  .page-products .pd-switch__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
  }
  .page-products .pd-switch__side {
    position: sticky;
    top: 6rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pd-jump a::after,
  .page-products .sk-tabs__button {
    transition: none;
  }
  .page-products .pd-jump a:hover::after,
  .page-products .pd-jump a:focus-visible::after {
    transform: none;
  }
}