.page-products {
  --pd-line: 1px solid var(--fh-iron);
  --pd-cyan-line: 1px solid rgba(47, 224, 214, 0.42);
  --pd-flame-line: 1px solid rgba(255, 90, 31, 0.48);
  background: var(--fh-carbon);
  color: var(--fh-bone);
}

.page-products .pd-crumb {
  padding-top: clamp(20px, 4vw, 38px);
}

/* ---------- 左缘坐标索引 ---------- */
.page-products .pd-rail {
  display: none;
}

@media (min-width: 1500px) {
  .page-products .pd-rail {
    display: flex;
    flex-direction: column;
    gap: 16px;
    position: fixed;
    left: 22px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 30;
  }
}

.page-products .pd-rail__item {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--fh-mist);
}

.page-products .pd-rail__item .fh-rail__dot {
  display: block;
  width: 6px;
  height: 6px;
  background: var(--fh-iron);
  transition: background 0.25s var(--fh-ease), box-shadow 0.25s var(--fh-ease);
}

.page-products .pd-rail__label {
  writing-mode: vertical-rl;
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--fh-mist);
  transition: color 0.25s var(--fh-ease);
}

.page-products .pd-rail__item.is-active .fh-rail__dot {
  background: var(--fh-flame);
  box-shadow: 0 0 0 3px rgba(255, 90, 31, 0.18);
}

.page-products .pd-rail__item.is-active .pd-rail__label {
  color: var(--fh-amber);
}

/* ---------- 首屏 ---------- */
.page-products .pd-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(44px, 6vw, 88px) 0 clamp(52px, 7vw, 100px);
  border-bottom: var(--pd-line);
}

.page-products .pd-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(80% 70% at 88% 4%, rgba(255, 90, 31, 0.16), transparent 62%),
    linear-gradient(180deg, rgba(14, 107, 112, 0.18), transparent 58%);
  pointer-events: none;
}

.page-products .pd-hero::after {
  content: "";
  position: absolute;
  right: -10%;
  top: -30%;
  width: min(520px, 62vw);
  height: 160%;
  background: linear-gradient(200deg, rgba(255, 90, 31, 0.14), rgba(255, 90, 31, 0) 64%);
  transform: skewX(-14deg);
  pointer-events: none;
}

.page-products .pd-hero__inner {
  position: relative;
  z-index: 1;
}

.page-products .pd-hero__eyebrow {
  letter-spacing: 0.32em;
  color: var(--fh-amber);
  margin: 0 0 clamp(14px, 2vw, 22px);
}

.page-products .pd-hero__title {
  margin: 0 0 clamp(26px, 3.5vw, 44px);
  font-size: clamp(2.4rem, 7.4vw, 5.6rem);
  font-weight: 900;
  line-height: 0.98;
  letter-spacing: -0.03em;
  color: var(--fh-bone);
}

.page-products .pd-hero__title em {
  display: inline-block;
  font-style: italic;
  color: var(--fh-flame);
  transform: skewX(-7deg);
}

.page-products .pd-hero__body {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 52px);
  align-items: start;
}

@media (min-width: 900px) {
  .page-products .pd-hero__body {
    grid-template-columns: 7fr 5fr;
  }
}

.page-products .pd-hero__lead {
  margin: 0;
  color: var(--fh-bone);
}

.page-products .pd-hero__facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--fh-iron);
  border: var(--pd-line);
}

.page-products .pd-hero__facts li {
  background: var(--fh-ink);
  padding: 16px 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

.page-products .pd-hero__facts .fh-data {
  color: var(--fh-amber);
  font-size: clamp(1.4rem, 3vw, 2.1rem);
  line-height: 1;
}

.page-products .pd-hero__facts small {
  font-size: 12px;
  line-height: 1.5;
  color: var(--fh-mist);
}

.page-products .pd-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: clamp(28px, 4vw, 46px);
}

/* ---------- 区块标题 ---------- */
.page-products .pd-head {
  max-width: 46em;
  margin-bottom: clamp(34px, 5vw, 62px);
}

.page-products .pd-head__title {
  margin: 12px 0 16px;
  font-size: clamp(1.65rem, 3.6vw, 2.75rem);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--fh-bone);
}

.page-products .pd-head__title::before {
  content: "/";
  color: var(--fh-ember);
  margin-right: 0.28em;
  font-weight: 900;
}

.page-products .pd-head__desc {
  margin: 0;
  color: var(--fh-mist);
}

/* ---------- 版本总览 ---------- */
.page-products .pd-versions {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 2vw, 22px);
}

@media (min-width: 880px) {
  .page-products .pd-versions {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-products .pd-ver {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(22px, 3vw, 34px);
  background: var(--fh-ink);
  border: var(--pd-line);
  transition: transform 0.28s var(--fh-ease), border-color 0.28s var(--fh-ease);
}

.page-products .pd-ver--mobile {
  border-top: 3px solid var(--fh-flame);
}

.page-products .pd-ver--tablet {
  border-top: 3px solid var(--fh-cyan);
}

.page-products .pd-ver--desktop {
  border-top: 3px solid var(--fh-ember);
}

.page-products .pd-ver__no {
  margin: 0;
  font-size: 0.82rem;
  letter-spacing: 0.22em;
  color: var(--fh-mist);
}

.page-products .pd-ver__name {
  margin: 0;
  font-size: clamp(1.2rem, 2vw, 1.45rem);
  font-weight: 800;
  color: var(--fh-bone);
  letter-spacing: -0.01em;
}

.page-products .pd-ver__tag {
  align-self: flex-start;
  padding: 3px 10px;
  font-size: 12px;
  letter-spacing: 0.18em;
  border: 1px solid var(--fh-iron);
  color: var(--fh-mist);
}

.page-products .pd-ver--mobile .pd-ver__tag {
  color: var(--fh-flame);
  border-color: rgba(255, 90, 31, 0.5);
}

.page-products .pd-ver--tablet .pd-ver__tag {
  color: var(--fh-cyan);
  border-color: rgba(47, 224, 214, 0.5);
}

.page-products .pd-ver--desktop .pd-ver__tag {
  color: var(--fh-amber);
  border-color: rgba(255, 179, 71, 0.5);
}

.page-products .pd-ver__desc {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.78;
  color: var(--fh-mist);
}

.page-products .pd-ver__list {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.page-products .pd-ver__list li {
  position: relative;
  padding-left: 16px;
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--fh-bone);
}

.page-products .pd-ver__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 6px;
  height: 6px;
  background: var(--fh-cyan);
}

.page-products .pd-ver__fit {
  margin: auto 0 0;
  padding-top: 14px;
  border-top: var(--pd-line);
  font-size: 0.84rem;
  color: var(--fh-mist);
}

/* ---------- 通用分栏与图片 ---------- */
.page-products .pd-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 56px);
  align-items: start;
}

@media (min-width: 900px) {
  .page-products .pd-split {
    grid-template-columns: 5fr 7fr;
  }
}

.page-products .pd-shot {
  margin: 0;
  background: var(--fh-ink);
  border: var(--pd-line);
  overflow: hidden;
}

.page-products .pd-shot__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-products .pd-shot .fh-media__caption {
  display: block;
  padding: 10px 14px;
  border-top: var(--pd-line);
  font-size: 12px;
  color: var(--fh-mist);
}

.page-products .pd-shot--tall .pd-shot__img {
  max-height: 560px;
  object-position: top center;
}

@media (min-width: 900px) {
  .page-products .pd-shot--tall .pd-shot__img {
    max-height: 620px;
  }
}

/* ---------- 移动端 ---------- */
.page-products .pd-feature {
  margin-top: 22px;
  padding-left: 18px;
  border-left: 2px solid var(--fh-flame);
}

.page-products .pd-feature__title {
  margin: 0 0 6px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--fh-bone);
}

.page-products .pd-feature__text {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.78;
  color: var(--fh-mist);
}

/* ---------- 大屏面板 ---------- */
.page-products .pd-screen__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.5vw, 46px);
  align-items: center;
  padding-block: clamp(24px, 4vw, 48px);
  border-top: var(--pd-line);
}

.page-products .pd-screen__row:last-child {
  border-bottom: var(--pd-line);
}

@media (min-width: 900px) {
  .page-products .pd-screen__row {
    grid-template-columns: 7fr 5fr;
  }

  .page-products .pd-screen__row--flip {
    grid-template-columns: 5fr 7fr;
  }

  .page-products .pd-screen__row--flip .pd-shot {
    order: 2;
  }

  .page-products .pd-screen__row--flip .pd-screen__text {
    order: 1;
  }
}

.page-products .pd-screen__sub {
  margin: 0 0 14px;
  font-size: clamp(1.05rem, 1.8vw, 1.3rem);
  font-weight: 800;
  color: var(--fh-bone);
}

.page-products .pd-screen__text .fh-prose {
  margin: 0 0 14px;
  color: var(--fh-mist);
}

.page-products .pd-checks {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-products .pd-checks li {
  position: relative;
  padding-left: 20px;
  font-size: 0.92rem;
  line-height: 1.72;
  color: var(--fh-bone);
}

.page-products .pd-checks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 10px;
  height: 1px;
  background: var(--fh-cyan);
}

.page-products .pd-code {
  margin: 18px 0 14px;
}

.page-products .pd-code__head {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--fh-mist);
}

.page-products .pd-code__block {
  margin: 0 0 10px;
  padding: 12px 14px;
  background: var(--fh-carbon);
  border: var(--pd-cyan-line);
  overflow-x: auto;
  font-family: var(--fh-font-mono);
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--fh-cyan);
  white-space: pre;
}

.page-products .pd-code__block--json {
  color: var(--fh-amber);
}

.page-products .pd-screen__hint {
  margin: 0;
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--fh-mist);
}

/* ---------- 栏目订阅 ---------- */
.page-products .pd-sub__grid {
  align-items: start;
}

.page-products .pd-sub__link {
  margin-top: 22px;
}

.page-products .pd-sub__panel {
  padding: clamp(22px, 3vw, 32px);
  background: var(--fh-ink);
  border: var(--pd-line);
  border-left: 3px solid var(--fh-cyan);
}

.page-products .pd-sub__panel-title {
  margin: 0 0 18px;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--fh-bone);
}

.page-products .pd-sub__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}

.page-products .pd-sub__steps li {
  display: grid;
  grid-template-columns: 42px 1fr;
  align-items: baseline;
  gap: 12px;
  padding: 12px 0;
  border-top: var(--pd-line);
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--fh-bone);
}

.page-products .pd-sub__steps .fh-data {
  color: var(--fh-flame);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
}

.page-products .pd-sub__note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: var(--pd-line);
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--fh-mist);
}

/* ---------- 安装流程 ---------- */
.page-products .pd-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-products .pd-steps::before {
  content: "";
  position: absolute;
  left: 21px;
  top: 12px;
  bottom: 24px;
  width: 1px;
  background: linear-gradient(180deg, var(--fh-flame), rgba(47, 224, 214, 0.5));
}

.page-products .pd-step {
  position: relative;
  padding: 0 0 clamp(26px, 3.6vw, 42px) 62px;
}

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

.page-products .pd-step__no {
  position: absolute;
  left: 0;
  top: 0;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  background: var(--fh-carbon);
  border: 1px solid var(--fh-flame);
  color: var(--fh-flame);
  font-family: var(--fh-font-mono);
  font-size: 0.84rem;
  letter-spacing: 0.04em;
}

.page-products .pd-step__title {
  margin: 4px 0 8px;
  font-size: clamp(1rem, 1.6vw, 1.12rem);
  font-weight: 800;
  color: var(--fh-bone);
}

.page-products .pd-step__desc {
  margin: 0;
  max-width: 38em;
  font-size: 0.92rem;
  line-height: 1.82;
  color: var(--fh-mist);
}

/* ---------- 运行环境 ---------- */
.page-products .pd-env {
  position: relative;
  margin-top: clamp(38px, 5vw, 64px);
  border: var(--pd-line);
  overflow: hidden;
}

.page-products .pd-env__tex {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.22;
}

.page-products .pd-env::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(10, 11, 13, 0.94), rgba(10, 11, 13, 0.72));
}

.page-products .pd-env__body {
  position: relative;
  z-index: 1;
  padding: clamp(22px, 3.4vw, 40px);
}

.page-products .pd-env__title {
  margin: 0 0 8px;
  font-size: clamp(1.05rem, 1.8vw, 1.3rem);
  font-weight: 800;
  color: var(--fh-bone);
}

.page-products .pd-env__lead {
  margin: 0 0 18px;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--fh-mist);
}

.page-products .pd-fold {
  background: rgba(20, 23, 27, 0.86);
  border: var(--pd-line);
  margin-bottom: 10px;
}

.page-products .pd-fold > summary {
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 18px;
  font-size: 0.94rem;
  font-weight: 700;
  color: var(--fh-bone);
  list-style: none;
}

.page-products .pd-fold > summary::-webkit-details-marker {
  display: none;
}

.page-products .pd-fold > summary::after {
  content: "+";
  font-family: var(--fh-font-mono);
  font-size: 1.05rem;
  color: var(--fh-flame);
}

.page-products .pd-fold[open] > summary::after {
  content: "–";
}

.page-products .pd-fold__body {
  padding: 0 18px 18px;
  border-top: var(--pd-line);
}

.page-products .pd-fold__body p {
  margin: 14px 0 0;
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--fh-mist);
}

/* ---------- 更新节奏 ---------- */
.page-products .pd-log {
  position: relative;
  border: var(--pd-line);
  background: var(--fh-ink);
  overflow: hidden;
}

.page-products .pd-log__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.26;
}

.page-products .pd-log::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(10, 11, 13, 0.92), rgba(10, 11, 13, 0.7) 60%, rgba(194, 21, 27, 0.22));
}

.page-products .pd-log__inner {
  position: relative;
  z-index: 1;
  padding: clamp(20px, 3.4vw, 44px);
}

.page-products .pd-log__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: 20px 0;
  border-top: var(--pd-line);
}

.page-products .pd-log__row:first-child {
  border-top: 0;
  padding-top: 0;
}

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

@media (min-width: 780px) {
  .page-products .pd-log__row {
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 28px;
    align-items: baseline;
  }
}

.page-products .pd-log__ver {
  margin: 0;
  font-size: 0.92rem;
  letter-spacing: 0.06em;
  color: var(--fh-amber);
}

.page-products .pd-log__txt {
  margin: 0;
  max-width: 42em;
  font-size: 0.92rem;
  line-height: 1.82;
  color: var(--fh-bone);
}

/* ---------- 遇到问题 ---------- */
.page-products .pd-help {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 2vw, 20px);
}

@media (min-width: 760px) {
  .page-products .pd-help {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-products .pd-help__card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(22px, 3vw, 32px);
  background: var(--fh-ink);
  border: var(--pd-line);
  border-left: 3px solid var(--fh-cyan);
  text-decoration: none;
  transition: transform 0.28s var(--fh-ease), border-color 0.28s var(--fh-ease);
}

.page-products .pd-help__card--hot {
  border-left-color: var(--fh-flame);
}

.page-products .pd-help__k {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--fh-bone);
}

.page-products .pd-help__d {
  font-size: 0.9rem;
  line-height: 1.78;
  color: var(--fh-mist);
}

.page-products .pd-help__go {
  margin-top: auto;
  padding-top: 8px;
  font-family: var(--fh-font-mono);
  font-size: 1.05rem;
  color: var(--fh-flame);
}

.page-products .pd-note {
  margin: clamp(26px, 3.5vw, 40px) 0 0;
  padding-top: 18px;
  border-top: var(--pd-line);
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--fh-mist);
}

.page-products .pd-note a {
  color: var(--fh-amber);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 179, 71, 0.45);
}

.page-products .pd-note a:hover {
  color: var(--fh-flame);
  border-bottom-color: var(--fh-flame);
}

/* ---------- 悬停与动效 ---------- */
@media (hover: hover) {
  .page-products .pd-ver:hover,
  .page-products .pd-help__card:hover {
    transform: translateY(-6px);
    border-color: var(--fh-cyan);
  }

  .page-products .pd-help__card--hot:hover {
    border-color: var(--fh-flame);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pd-ver,
  .page-products .pd-help__card,
  .page-products .pd-rail__item .fh-rail__dot {
    transition: none;
  }

  .page-products .pd-ver:hover,
  .page-products .pd-help__card:hover {
    transform: none;
  }
}

/* ---------- 窄屏收口 ---------- */
@media (max-width: 560px) {
  .page-products .pd-hero__facts {
    grid-template-columns: 1fr;
  }

  .page-products .pd-step {
    padding-left: 54px;
  }

  .page-products .pd-step__no {
    width: 38px;
    height: 38px;
  }

  .page-products .pd-steps::before {
    left: 18px;
  }

  .page-products .pd-sub__steps li {
    grid-template-columns: 34px 1fr;
  }
}