.page-products {
  display: block;
  padding-bottom: clamp(72px, 10vw, 144px);
}

/* ---------- 首屏 ---------- */
.page-products .pf-hero {
  padding: clamp(30px, 5vw, 70px) 0 clamp(34px, 5vw, 76px);
  background-image:
    radial-gradient(820px 300px at 6% 0%, rgba(255, 90, 31, 0.13), transparent 68%),
    radial-gradient(700px 320px at 92% 18%, rgba(47, 191, 155, 0.09), transparent 72%);
  background-repeat: no-repeat;
}

.page-products .pf-hero__title {
  max-width: 21ch;
  margin: 18px 0 0;
}

.page-products .pf-hero__lede {
  max-width: 62ch;
  margin: 22px 0 0;
  color: var(--cold);
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.8;
}

.page-products .pf-hero__facts {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(32px, 4.5vw, 52px) 0 0;
  padding: 0;
  background: var(--slate);
  border-top: 1px solid var(--slate);
  border-bottom: 1px solid var(--slate);
}

.page-products .pf-fact {
  background: var(--night);
  padding: 16px 14px 18px;
}

.page-products .pf-fact__label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-products .pf-fact__value {
  display: block;
  margin-top: 10px;
  font-family: var(--font-num);
  font-size: clamp(28px, 5vw, 40px);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--white);
  font-variant-numeric: tabular-nums;
}

.page-products .pf-fact__unit {
  margin-left: 6px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--muted);
}

/* ---------- 索引 + 内容双栏 ---------- */
.page-products .pf-shell {
  display: grid;
  gap: clamp(30px, 5vw, 56px);
  padding-top: clamp(10px, 2vw, 26px);
}

.page-products .pf-index {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: var(--hairline);
}

.page-products .pf-index__eyebrow {
  grid-column: 1 / -1;
  margin: 0;
  padding: 16px 0 12px;
  color: var(--muted);
}

.page-products .pf-index__link {
  position: relative;
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: 6px;
  align-items: baseline;
  padding: 12px 10px 12px 14px;
  border-bottom: var(--hairline);
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
  letter-spacing: 0.06em;
  text-decoration: none;
  transition: color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-products .pf-index__link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: var(--accent);
  transform: scaleY(0);
  transform-origin: center top;
  transition: transform 0.24s var(--ease);
}

.page-products .pf-index__link:hover,
.page-products .pf-index__link:focus-visible {
  color: var(--white);
  background: rgba(13, 37, 64, 0.85);
}

.page-products .pf-index__link:hover::before,
.page-products .pf-index__link:focus-visible::before {
  transform: scaleY(1);
}

.page-products .pf-index__num {
  font-family: var(--font-num);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--accent);
}

/* ---------- 内容流 ---------- */
.page-products .pf-flow {
  display: flex;
  flex-direction: column;
  gap: clamp(40px, 6vw, 88px);
  min-width: 0;
}

.page-products .pf-block {
  display: flex;
  flex-direction: column;
  gap: clamp(20px, 3vw, 32px);
  min-width: 0;
  padding: clamp(24px, 3.5vw, 48px);
  scroll-margin-top: 100px;
}

.page-products .pf-block__head {
  max-width: 68ch;
}

.page-products .pf-block__head .section-title {
  margin: 14px 0 0;
  color: var(--white);
}

.page-products .pf-block__lede {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--cold);
}

/* ---------- 图 ---------- */
.page-products .pf-figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid rgba(220, 231, 242, 0.14);
  background: var(--night);
}

.page-products .pf-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(220, 231, 242, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(220, 231, 242, 0.055) 1px, transparent 1px);
  background-size: 46px 46px;
}

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

/* ---------- 分段控件 ---------- */
.page-products .pf-switch {
  margin: 0;
}

.page-products .pf-switch__list {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  border-bottom: var(--hairline);
}

.page-products .pf-switch__tab {
  position: relative;
  flex: none;
  appearance: none;
  background: transparent;
  border: 0;
  border-bottom: 2px solid transparent;
  padding: 12px 18px;
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.04em;
  white-space: nowrap;
  cursor: pointer;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-products .pf-switch__tab:hover {
  color: var(--white);
}

.page-products .pf-switch__tab[aria-selected="true"] {
  color: var(--white);
  border-bottom-color: var(--accent);
}

.page-products .pf-switch__tab:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

.page-products .pf-switch__panels {
  padding: 0;
}

.page-products .pf-switch__panel {
  padding: clamp(20px, 3vw, 30px) 0 0;
}

.page-products .pf-switch__panel[hidden] {
  display: none;
}

.page-products .pf-switch__body {
  display: grid;
  gap: clamp(20px, 3vw, 36px);
  min-width: 0;
}

.page-products .pf-switch__lead {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--white);
}

/* ---------- 纯 CSS 布局预览 ---------- */
.page-products .pf-preview {
  display: grid;
  gap: 6px;
  padding: 10px;
  aspect-ratio: 16 / 9;
  border: 1px solid rgba(220, 231, 242, 0.16);
  background: linear-gradient(180deg, rgba(13, 37, 64, 0.92), rgba(6, 21, 39, 0.92));
}

.page-products .pf-preview__cell {
  display: block;
  background: rgba(220, 231, 242, 0.07);
  border: 1px solid rgba(220, 231, 242, 0.07);
}

.page-products .pf-preview__cell--key {
  background: rgba(255, 90, 31, 0.24);
  border-color: rgba(255, 90, 31, 0.55);
}

.page-products .pf-preview--hd {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  grid-template-rows: repeat(2, minmax(0, 1fr));
}

.page-products .pf-preview--uhd {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  grid-template-rows: repeat(2, minmax(0, 1fr));
  gap: 4px;
  padding: 8px;
}

/* ---------- 模块组合 ---------- */
.page-products .pf-modules {
  list-style: none;
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  background: var(--slate);
  border-top: var(--hairline);
  border-bottom: var(--hairline);
}

.page-products .pf-module {
  background: var(--night);
  padding: 22px 20px 24px;
  transition: background-color 0.24s var(--ease);
}

.page-products .pf-module:hover {
  background: #0a2035;
}

.page-products .pf-module__num {
  display: block;
  font-family: var(--font-num);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--accent);
}

.page-products .pf-module__name {
  margin: 12px 0 0;
  font-size: 17px;
  font-weight: 500;
  color: var(--white);
}

.page-products .pf-module__desc {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.page-products .pf-combos {
  display: grid;
  gap: 1px;
  background: var(--slate);
  border-top: var(--hairline);
}

.page-products .pf-combo {
  background: var(--night);
  padding: 20px;
}

.page-products .pf-combo__title {
  margin: 0;
  font-size: 15px;
  font-weight: 500;
  color: var(--white);
}

.page-products .pf-combo__list {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  font-size: 13px;
  line-height: 1.95;
  color: var(--muted);
}

.page-products .pf-combo__list li::before {
  content: "";
  display: inline-block;
  width: 10px;
  height: 1px;
  margin-right: 8px;
  vertical-align: middle;
  background: var(--accent);
}

/* ---------- 横贯步骤条 ---------- */
.page-products .pf-steps {
  list-style: none;
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  background: var(--slate);
  border-top: var(--hairline);
  border-bottom: var(--hairline);
}

.page-products .pf-step {
  position: relative;
  background: var(--night);
  padding: 24px 20px 26px;
}

.page-products .pf-step::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 44px;
  height: 2px;
  background: var(--accent);
}

.page-products .pf-step__index {
  display: block;
  font-family: var(--font-num);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--jade);
}

.page-products .pf-step__title {
  margin: 12px 0 0;
  font-size: 16px;
  font-weight: 500;
  color: var(--white);
}

.page-products .pf-step__desc {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 分栏 ---------- */
.page-products .pf-split {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  min-width: 0;
}

.page-products .pf-split__body {
  min-width: 0;
}

/* ---------- 订阅频道 ---------- */
.page-products .pf-channels {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1px;
  margin: 0;
  padding: 0;
  background: var(--slate);
}

.page-products .pf-channel {
  background: var(--night);
  padding: 18px 18px 20px;
}

.page-products .pf-channel__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.page-products .pf-channel__name {
  margin: 0;
  font-size: 16px;
  font-weight: 500;
  color: var(--white);
}

.page-products .pf-channel__desc {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 赛程路径 ---------- */
.page-products .pf-paths {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1px;
  margin: 0;
  padding: 0;
  background: var(--slate);
}

.page-products .pf-path {
  background: var(--night);
  padding: 20px;
}

.page-products .pf-path__label {
  display: inline-block;
  padding: 3px 9px;
  border: 1px solid rgba(47, 191, 155, 0.42);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.16em;
  color: var(--jade);
}

.page-products .pf-path__route {
  margin: 14px 0 0;
  font-family: var(--font-num);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--white);
}

.page-products .pf-path__desc {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 关注列表 ---------- */
.page-products .pf-checks {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 0;
  padding: 0;
}

.page-products .pf-checks li {
  position: relative;
  padding-left: 24px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--cold);
}

.page-products .pf-checks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 13px;
  height: 1px;
  background: var(--accent);
}

.page-products .pf-recover {
  margin-top: clamp(20px, 3vw, 28px);
  padding: 20px 20px 22px;
  background: var(--night);
  border-left: 2px solid var(--accent);
}

.page-products .pf-recover__title {
  margin: 0;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--white);
}

.page-products .pf-recover__steps {
  list-style: none;
  counter-reset: rf;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 14px 0 0;
  padding: 0;
}

.page-products .pf-recover__steps li {
  counter-increment: rf;
  display: flex;
  gap: 12px;
  align-items: baseline;
  font-size: 14px;
  line-height: 1.65;
  color: var(--cold);
}

.page-products .pf-recover__steps li::before {
  content: counter(rf, decimal-leading-zero);
  flex: none;
  font-family: var(--font-num);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--jade);
}

/* ---------- 版本时间线 ---------- */
.page-products .pf-timeline {
  list-style: none;
  display: grid;
  gap: clamp(18px, 3vw, 26px);
  margin: 0;
  padding: 0;
}

.page-products .pf-version {
  position: relative;
  padding-left: 22px;
  border-left: 1px solid var(--slate);
}

.page-products .pf-version::before {
  content: "";
  position: absolute;
  left: -4.5px;
  top: 7px;
  width: 8px;
  height: 8px;
  background: var(--accent);
}

.page-products .pf-version__tag {
  margin: 0;
  font-family: var(--font-num);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--white);
}

.page-products .pf-version__text {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-products .pf-next {
  padding: 22px 20px 24px;
  background: rgba(47, 191, 155, 0.07);
  border: 1px solid rgba(47, 191, 155, 0.28);
}

.page-products .pf-next__title {
  margin: 0;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--jade);
}

.page-products .pf-next__text {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--cold);
}

/* ---------- 协助 ---------- */
.page-products .pf-assist {
  display: grid;
  gap: 1px;
  background: var(--slate);
  border-top: var(--hairline);
  border-bottom: var(--hairline);
}

.page-products .pf-assist__item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
  background: var(--night);
  padding: 24px 20px 26px;
}

.page-products .pf-assist__title {
  margin: 0;
  font-size: 17px;
  font-weight: 500;
  color: var(--white);
}

.page-products .pf-assist__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 小号注释 ---------- */
.page-products .pf-note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

.page-products .pf-note a {
  color: var(--accent-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-products .pf-note a:hover,
.page-products .pf-note a:focus-visible {
  color: var(--accent);
}

.page-products .pf-note a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-products .pf-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-products .pf-fact {
    padding: 18px 16px 20px;
  }

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

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

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

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

@media (min-width: 860px) {
  .page-products .pf-switch__body {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-products .pf-split {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: start;
  }

  .page-products .pf-split--flip {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  }

  .page-products .pf-split--flip > .pf-figure {
    order: -1;
  }
}

@media (min-width: 1024px) {
  .page-products .pf-shell {
    grid-template-columns: 216px minmax(0, 1fr);
    gap: clamp(40px, 5vw, 80px);
  }

  .page-products .pf-index {
    grid-template-columns: minmax(0, 1fr);
    position: sticky;
    top: 96px;
    align-self: start;
  }
}

@media (min-width: 1180px) {
  .page-products .pf-modules {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pf-index__link,
  .page-products .pf-index__link::before,
  .page-products .pf-switch__tab,
  .page-products .pf-module {
    transition: none;
  }
}