.page-products {
  --prod-rail: 30px;
  --prod-line-x: 8px;
  --prod-node-left: -32px;
  --prod-border: rgba(201, 207, 216, 0.26);
  --prod-panel: rgba(27, 59, 111, 0.34);
  --prod-paper-soft: #46506a;
  --prod-paper-tint: rgba(22, 33, 58, 0.06);
  background: var(--ink);
  color: var(--white);
  padding-block-end: clamp(40px, 7vw, 88px);
  overflow-x: clip;
}

/* ---------- 面包屑 ---------- */
.page-products .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-block: 22px 0;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.04em;
  color: var(--stone-soft);
}

.page-products .breadcrumb a {
  color: var(--stone-soft);
  text-decoration: none;
  transition: color var(--speed);
}

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

.page-products .breadcrumb__sep {
  color: var(--stone);
}

/* ---------- 首屏 ---------- */
.page-products .prod-hero {
  position: relative;
  padding-block: clamp(28px, 5vw, 56px) 0;
}

.page-products .prod-hero__glow {
  position: absolute;
  inset-block-start: -30%;
  inset-inline-end: -18%;
  width: min(620px, 96vw);
  aspect-ratio: 1;
  z-index: 0;
  pointer-events: none;
}

.page-products .prod-hero .container {
  position: relative;
  z-index: 1;
}

.page-products .prod-hero__eyebrow {
  display: inline-block;
  margin: 0 0 18px;
  padding: 6px 12px;
  border: 1px solid var(--clay);
  font-size: var(--fs-12);
  letter-spacing: 0.16em;
  color: var(--accent);
}

.page-products .prod-hero__title {
  margin: 0 0 20px;
  max-width: 20ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(28px, 6.4vw, 54px);
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-products .prod-hero__lede {
  margin: 0 0 16px;
  max-width: 64ch;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--silver);
}

.page-products .prod-hero__jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.page-products .prod-hero__jump a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--hair-strong);
  font-size: var(--fs-14);
  color: var(--silver);
  text-decoration: none;
  transition: border-color var(--speed), color var(--speed), background var(--speed);
}

.page-products .prod-hero__jump a:hover,
.page-products .prod-hero__jump a:focus-visible {
  border-color: var(--accent);
  background: rgba(255, 106, 43, 0.12);
  color: var(--white);
}

.page-products .prod-hero__jump .mono {
  font-size: var(--fs-12);
  color: var(--accent);
}

.page-products .prod-hero__media {
  margin-block: clamp(30px, 5vw, 56px) 0;
}

/* ---------- 模块轨道 ---------- */
.page-products .prod-track-section {
  padding-block: clamp(44px, 7vw, 84px) clamp(28px, 5vw, 56px);
}

.page-products .prod-track {
  position: relative;
  padding-inline-start: var(--prod-rail);
}

.page-products .prod-track::before {
  content: "";
  position: absolute;
  inset-block: 18px;
  inset-inline-start: var(--prod-line-x);
  width: 3px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--accent) 0%, var(--clay) 48%, var(--accent) 100%);
  opacity: 0.82;
}

.page-products .mod {
  position: relative;
  margin-block-end: 24px;
  padding: 24px 20px;
  border: 1px solid var(--prod-border);
  background: var(--prod-panel);
  scroll-margin-top: 96px;
  transition: border-color var(--speed), background var(--speed);
}

.page-products .mod:last-child {
  margin-block-end: 0;
}

.page-products .mod:target {
  border-color: var(--accent);
  background: rgba(255, 106, 43, 0.09);
}

.page-products .mod__node {
  position: absolute;
  inset-inline-start: var(--prod-node-left);
  inset-block-start: 22px;
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border: 2px solid var(--accent);
  border-radius: 50%;
  background: var(--ink-deep);
  color: var(--accent);
  font-size: 11px;
  line-height: 1;
  z-index: 2;
}

.page-products .mod__head {
  margin-block-end: 12px;
}

.page-products .mod__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(19px, 3.6vw, 27px);
  line-height: 1.34;
  letter-spacing: -0.01em;
  color: var(--white);
  overflow-wrap: anywhere;
}

.page-products .mod__subtitle {
  margin: 22px 0 12px;
  font-size: var(--fs-14);
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--accent);
}

.page-products .mod__text {
  margin: 0 0 14px;
  max-width: 64ch;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--silver);
}

.page-products .mod__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
}

.page-products .mod__split {
  display: grid;
  gap: 20px;
  align-items: start;
}

.page-products .mod__col {
  min-width: 0;
}

.page-products .mod__figure {
  margin: 4px 0 4px;
}

.page-products .mod .aside-note {
  margin: 16px 0 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--stone-soft);
}

/* ---------- 模块三：纸面高亮 ---------- */
.page-products .mod--paper {
  border: 1px solid var(--clay);
  border-inline-start: 4px solid var(--accent);
  background: var(--paper);
  color: var(--paper-ink);
}

.page-products .mod--paper .mod__title {
  color: var(--paper-ink);
}

.page-products .mod--paper .mod__text {
  color: var(--prod-paper-soft);
}

.page-products .mod--paper .aside-note {
  color: #5b647a;
}

.page-products .qa-list {
  display: grid;
  gap: 12px;
  margin: 18px 0 4px;
  padding: 0;
  list-style: none;
}

.page-products .qa-list li {
  padding: 12px 14px;
  border-inline-start: 2px solid var(--clay);
  background: var(--prod-paper-tint);
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--prod-paper-soft);
}

.page-products .qa-list strong {
  display: block;
  margin-block-end: 4px;
  font-size: var(--fs-16);
  font-weight: 700;
  color: var(--paper-ink);
}

.page-products .myth-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .myth-list li {
  position: relative;
  padding-inline-start: 20px;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--prod-paper-soft);
}

.page-products .myth-list li::before {
  content: "✕";
  position: absolute;
  inset-inline-start: 0;
  inset-block-start: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--clay);
}

/* ---------- 模块四：文件列表 ---------- */
.page-products .filelist {
  margin: 18px 0 16px;
  padding: 0;
  list-style: none;
  border-block-start: 1px solid var(--hair-strong);
}

.page-products .filelist__row {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 4px 10px;
  padding: 12px 4px;
  border-block-end: 1px solid var(--hair-strong);
  transition: background var(--speed), padding-inline-start var(--speed);
}

.page-products .filelist__row:hover,
.page-products .filelist__row:focus-within {
  background: rgba(255, 106, 43, 0.1);
  padding-inline-start: 10px;
}

.page-products .filelist__no {
  grid-row: 1 / span 3;
  align-self: center;
  font-size: var(--fs-14);
  color: var(--accent);
}

.page-products .filelist__name {
  font-size: var(--fs-16);
  font-weight: 600;
  color: var(--white);
}

.page-products .filelist__fmt {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.page-products .filelist__size {
  font-size: var(--fs-12);
  color: var(--stone-soft);
}

/* ---------- 模块五：联系 ---------- */
.page-products .contact-list {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  border-block-start: 1px solid var(--hair-strong);
}

.page-products .contact-list li {
  display: grid;
  gap: 4px;
  padding: 12px 0;
  border-block-end: 1px solid var(--hair-strong);
}

.page-products .contact-list .mono {
  font-size: var(--fs-12);
  letter-spacing: 0.1em;
  color: var(--accent);
}

.page-products .contact-list strong {
  font-size: var(--fs-16);
  font-weight: 600;
  color: var(--white);
  overflow-wrap: anywhere;
}

.page-products .contact-list__note {
  font-size: var(--fs-14);
  color: var(--stone-soft);
}

/* ---------- 三条路径 ---------- */
.page-products .prod-paths {
  padding-block: clamp(32px, 5vw, 64px);
}

.page-products .prod-paths__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(23px, 4vw, 34px);
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-products .prod-paths__lede {
  margin: 0;
  max-width: 60ch;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--silver);
}

.page-products .paths {
  display: grid;
  gap: 16px;
  margin-block-start: 28px;
}

.page-products .path-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 20px 18px;
  border: 1px solid var(--prod-border);
  border-block-start: 3px solid var(--clay);
  background: rgba(27, 59, 111, 0.28);
}

.page-products .path-card__title {
  margin: 0;
  font-size: var(--fs-18);
  font-weight: 700;
  line-height: 1.45;
  color: var(--white);
}

.page-products .path-card__desc {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--silver);
}

.page-products .path-card__chain {
  display: flex;
  align-items: center;
  font-size: var(--fs-12);
  color: var(--accent);
}

.page-products .path-card__chain span {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border: 1px solid var(--clay);
  border-radius: 50%;
}

.page-products .path-card__chain span + span {
  position: relative;
  margin-inline-start: 24px;
}

.page-products .path-card__chain span + span::before {
  content: "";
  position: absolute;
  inset-inline-end: 100%;
  inset-block-start: 50%;
  width: 24px;
  height: 1px;
  background: var(--clay);
}

.page-products .path-card__link {
  margin-block-start: auto;
  font-size: var(--fs-14);
  color: var(--accent);
  text-decoration: none;
  border-block-end: 1px solid transparent;
  transition: border-color var(--speed), color var(--speed);
}

.page-products .path-card__link:hover,
.page-products .path-card__link:focus-visible {
  color: var(--white);
  border-block-end-color: var(--accent);
}

/* ---------- 延伸入口 ---------- */
.page-products .prod-next {
  padding-block: clamp(28px, 5vw, 64px) 0;
}

.page-products .prod-next__inner {
  padding: clamp(22px, 4vw, 42px);
  border: 1px solid var(--clay);
  border-inline-start: 3px solid var(--accent);
  background: var(--paper);
  color: var(--paper-ink);
}

.page-products .prod-next__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(21px, 3.4vw, 30px);
  line-height: 1.3;
  color: var(--paper-ink);
}

.page-products .prod-next__links {
  display: grid;
  gap: 16px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-products .prod-next__links li {
  display: grid;
  gap: 4px;
  padding-block-end: 14px;
  border-block-end: 1px solid rgba(196, 99, 58, 0.35);
}

.page-products .prod-next__links li:last-child {
  padding-block-end: 0;
  border-block-end: 0;
}

.page-products .prod-next__links a {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  font-size: var(--fs-18);
  font-weight: 700;
  color: var(--paper-ink);
  text-decoration: none;
  transition: color var(--speed);
}

.page-products .prod-next__links a:hover,
.page-products .prod-next__links a:focus-visible {
  color: var(--clay);
}

.page-products .prod-next__links .mono {
  font-size: var(--fs-12);
  letter-spacing: 0.1em;
  color: var(--clay);
}

.page-products .prod-next__note {
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--prod-paper-soft);
}

/* ---------- 平板 ---------- */
@media (min-width: 640px) {
  .page-products {
    --prod-rail: 56px;
    --prod-line-x: 21px;
    --prod-node-left: -46px;
  }

  .page-products .mod {
    padding: 28px 26px;
  }

  .page-products .mod__node {
    inset-block-start: 26px;
  }

  .page-products .filelist__row {
    grid-template-columns: 36px minmax(0, 1fr) auto;
    align-items: center;
  }

  .page-products .filelist__fmt {
    grid-column: 3;
    grid-row: 1;
    justify-content: flex-end;
  }

  .page-products .filelist__size {
    grid-column: 3;
    grid-row: 2;
    justify-self: end;
  }

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

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-products {
    --prod-rail: 78px;
    --prod-line-x: 27px;
    --prod-node-left: -62px;
  }

  .page-products .mod {
    padding: 34px 36px;
    margin-block-end: 28px;
  }

  .page-products .mod__node {
    inset-block-start: 34px;
    width: 28px;
    height: 28px;
    font-size: 12px;
  }

  .page-products .mod__split {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: 32px;
  }

  .page-products .prod-hero__lede {
    font-size: var(--fs-18);
  }

  .page-products .prod-next__links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px 32px;
  }

  .page-products .prod-next__links li {
    padding-block-end: 0;
    border-block-end: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .prod-hero__glow {
    animation: none;
  }

  .page-products .filelist__row,
  .page-products .prod-hero__jump a,
  .page-products .path-card__link {
    transition: none;
  }
}
<<<END>>>