.page-products {
  --lib-gap: clamp(20px, 3vw, 44px);
  --lib-rail-w: 200px;
  background: var(--moon);
  color: var(--ink);
  overflow-x: hidden;
}

.page-products .lib-hero,
.page-products .lib-section {
  scroll-margin-top: calc(var(--topbar-h) + 16px);
}

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

.page-products .lib-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: min(46%, 520px);
  height: 100%;
  background: linear-gradient(160deg, rgba(156, 59, 46, 0.14), rgba(156, 59, 46, 0) 62%);
  clip-path: polygon(0 0, 100% 0, 62% 100%, 0 100%);
  pointer-events: none;
}

.page-products .lib-hero__inner {
  position: relative;
  display: grid;
  gap: clamp(20px, 3vw, 34px);
}

.page-products .lib-hero__title {
  display: inline-block;
  margin: 0;
  padding: 0.1em 0.24em 0.16em;
  background: var(--ochre);
  color: var(--moon);
  font-family: var(--font-display);
  font-size: clamp(30px, 7.2vw, 78px);
  line-height: 1.02;
  letter-spacing: -0.015em;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}

.page-products .lib-hero__tagline {
  margin: 14px 0 0;
  color: var(--copper);
  font-size: clamp(14px, 1.7vw, 17px);
  letter-spacing: 0.02em;
  line-height: 1.6;
}

.page-products .lib-hero__aside .lede {
  margin: 0;
  max-width: 46ch;
}

.page-products .lib-hero__jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.page-products .lib-hero__jump a {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 13px;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--cobalt);
  font-size: 13.5px;
  line-height: 1.5;
  text-decoration: none;
  transition: background var(--ease), color var(--ease), border-color var(--ease);
}

.page-products .lib-hero__jump a:hover,
.page-products .lib-hero__jump a:focus-visible {
  background: var(--cobalt);
  border-color: var(--cobalt);
  color: var(--paper);
}

.page-products .lib-hero__jump .num {
  color: var(--copper);
  font-size: 11.5px;
  letter-spacing: 0.16em;
}

.page-products .lib-hero__jump a:hover .num,
.page-products .lib-hero__jump a:focus-visible .num {
  color: var(--spark);
}

.page-products .lib-hero__figure {
  margin: clamp(24px, 4vw, 40px) 0 0;
  border-top: 2px solid var(--ochre);
}

.page-products .lib-hero__figure img {
  display: block;
  width: 100%;
  height: clamp(140px, 25vw, 300px);
  object-fit: cover;
}

/* ---------- 通用章节 ---------- */
.page-products .lib-section {
  padding-block: clamp(40px, 6.5vw, 80px);
}

.page-products .lib-section--cool {
  background: var(--mist);
  border-block: 1px solid var(--line-cool);
}

.page-products .lib-section__head {
  max-width: 64ch;
  margin-bottom: clamp(22px, 3.4vw, 40px);
}

.page-products .lib-section__head h2 {
  margin: 0.16em 0 0.42em;
  font-family: var(--font-display);
  font-size: clamp(24px, 3.6vw, 40px);
  line-height: 1.16;
  letter-spacing: -0.01em;
}

.page-products .lib-section__head p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--ink);
}

.page-products .lib-note {
  margin: 18px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--slate);
}

.page-products .lib-note a {
  color: var(--cobalt);
  text-underline-offset: 3px;
}

.page-products .lib-figure {
  margin: 0;
}

.page-products .lib-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--line);
  background: var(--paper);
}

.page-products .lib-figure figcaption {
  margin-top: 10px;
  padding-left: 12px;
  border-left: 2px solid var(--copper);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--slate);
}

/* ---------- 三层结构 ---------- */
.page-products .lib-layers {
  display: grid;
  gap: var(--lib-gap);
}

.page-products .lib-stack {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-products .lib-stack__item {
  position: relative;
  padding: 20px 20px 22px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-left: 4px solid var(--ochre);
  box-shadow: 0 1px 0 rgba(138, 90, 43, 0.18);
}

.page-products .lib-stack__item:nth-child(2) {
  border-left-color: var(--cobalt);
}

.page-products .lib-stack__item:nth-child(3) {
  border-left-color: var(--copper);
}

.page-products .lib-stack__num {
  display: block;
  margin-bottom: 6px;
  color: var(--copper);
  font-size: 11.5px;
  letter-spacing: 0.18em;
}

.page-products .lib-stack__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(17px, 2.2vw, 21px);
  line-height: 1.35;
}

.page-products .lib-stack__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
}

/* ---------- 版本号时间轴 ---------- */
.page-products .lib-timeline {
  display: grid;
  gap: var(--lib-gap);
}

.page-products .lib-timeline__kicker {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--copper);
  text-transform: uppercase;
}

.page-products .lib-timeline__list {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 6px;
  overflow-x: auto;
}

.page-products .lib-timeline__list li {
  flex: 0 0 auto;
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 13px;
  background: var(--paper);
  border: 1px solid var(--line-cool);
  border-left: 3px solid transparent;
  font-size: 13px;
}

.page-products .lib-timeline__list li .num {
  font-size: 13.5px;
  letter-spacing: 0.1em;
  color: var(--ink);
}

.page-products .lib-timeline__list li.is-current {
  border-color: var(--ochre);
  border-left-color: var(--ochre);
}

.page-products .lib-timeline__list li.is-current .num {
  color: var(--ochre);
}

.page-products .lib-rail__meta {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--slate);
}

.page-products .lib-timeline__body > p:first-child {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.8;
}

/* ---------- 表格 ---------- */
.page-products .lib-table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--line-cool);
  background: var(--paper);
}

.page-products .lib-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  line-height: 1.65;
}

.page-products .lib-table caption {
  padding: 12px 14px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--slate);
  background: var(--paper);
  border-bottom: 1px solid var(--line-cool);
}

.page-products .lib-table th,
.page-products .lib-table td {
  padding: 11px 13px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line-cool);
}

.page-products .lib-table thead th {
  background: var(--slate);
  color: var(--paper);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.1em;
  white-space: nowrap;
}

.page-products .lib-table tbody tr:nth-child(even) > * {
  background: var(--mist);
}

.page-products .lib-table tbody tr {
  transition: box-shadow var(--ease);
}

.page-products .lib-table tbody tr:hover > * {
  background: #EFE6D6;
}

.page-products .lib-table tbody tr:target > * {
  background: rgba(242, 193, 78, 0.34);
}

.page-products .lib-table tbody th[scope="row"] {
  font-weight: 600;
  white-space: nowrap;
}

.page-products .lib-entry-no {
  color: var(--cobalt);
  text-decoration: none;
  border-bottom: 1px solid rgba(31, 78, 121, 0.36);
  transition: color var(--ease), border-color var(--ease);
}

.page-products .lib-entry-no:hover,
.page-products .lib-entry-no:focus-visible {
  color: var(--ochre);
  border-bottom-color: var(--ochre);
}

/* ---------- 变更类型标签 ---------- */
.page-products .lib-tag {
  display: inline-block;
  padding: 1px 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.7;
  letter-spacing: 0.08em;
  white-space: nowrap;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
}

.page-products .lib-tag--new {
  color: var(--cobalt);
  border-color: rgba(31, 78, 121, 0.6);
}

.page-products .lib-tag--mod {
  color: var(--copper);
  border-color: rgba(138, 90, 43, 0.62);
}

.page-products .lib-tag--fix {
  color: var(--ochre);
  border-color: rgba(156, 59, 46, 0.6);
}

.page-products .lib-tag--idx {
  color: var(--slate);
  border-color: rgba(123, 138, 132, 0.72);
}

/* ---------- 条目编号索引 ---------- */
.page-products .lib-entries {
  display: grid;
  gap: var(--lib-gap);
}

.page-products .lib-entries__aside {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-products .lib-filterbar {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--copper);
}

.page-products .lib-filterbar span {
  padding: 3px 9px;
  border: 1px solid var(--line-cool);
  background: var(--paper);
  color: var(--ink);
  letter-spacing: 0.06em;
}

/* ---------- 两版本对照 ---------- */
.page-products .lib-figure--wide {
  margin-bottom: var(--lib-gap);
}

.page-products .lib-compare__pick {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-top: 4px solid var(--ochre);
}

.page-products .lib-compare__slot {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.page-products .lib-compare__label {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--slate);
}

.page-products .lib-compare__slot .num {
  font-size: clamp(18px, 2.6vw, 24px);
  letter-spacing: 0.1em;
  color: var(--cobalt);
}

.page-products .lib-compare__arrow {
  color: var(--copper);
  font-size: 18px;
  line-height: 1;
}

.page-products .lib-compare__steps {
  list-style: none;
  margin: var(--lib-gap) 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products .lib-compare__steps li {
  display: grid;
  gap: 4px;
  padding: 11px 14px;
  background: var(--paper);
  border-left: 2px solid var(--copper);
  font-size: 14px;
  line-height: 1.7;
}

.page-products .lib-compare__steps .num {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--copper);
}

/* ---------- 纠错区 ---------- */
.page-products .lib-feedback {
  display: grid;
  gap: var(--lib-gap);
}

.page-products .lib-feedback__body {
  display: grid;
  gap: 20px;
  align-content: start;
}

.page-products .lib-contact {
  margin: 0;
  display: grid;
  gap: 0;
  background: var(--paper);
  border: 1px solid var(--line);
}

.page-products .lib-contact dt {
  padding: 9px 14px 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--copper);
}

.page-products .lib-contact dd {
  margin: 0;
  padding: 4px 14px 11px;
  font-size: 14.5px;
  line-height: 1.65;
  border-bottom: 1px dashed var(--line-cool);
  word-break: break-word;
}

.page-products .lib-contact dd:last-of-type {
  border-bottom: 0;
}

.page-products .lib-feedback__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-products .lib-entries {
    grid-template-columns: minmax(0, 0.72fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-products .lib-feedback {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.75fr);
    align-items: start;
  }

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

@media (min-width: 900px) {
  .page-products .lib-hero__inner {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    align-items: end;
    gap: clamp(28px, 4vw, 56px);
  }

  .page-products .lib-layers {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: start;
  }

  .page-products .lib-timeline {
    grid-template-columns: minmax(150px, var(--lib-rail-w)) minmax(0, 1fr);
    align-items: start;
  }

  .page-products .lib-timeline__rail {
    position: sticky;
    top: calc(var(--topbar-h) + 18px);
    align-self: start;
  }

  .page-products .lib-timeline__list {
    display: grid;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-products .lib-timeline__list li {
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
    padding: 8px 12px;
    background: transparent;
    border: 0;
    border-left: 2px solid var(--line-cool);
  }

  .page-products .lib-timeline__list li.is-current {
    background: var(--paper);
    border-left-color: var(--ochre);
  }

  .page-products .lib-entries {
    grid-template-columns: minmax(0, 0.66fr) minmax(0, 1.34fr);
    gap: clamp(24px, 3.5vw, 52px);
  }

  .page-products .lib-compare__pick {
    padding: 20px 24px;
  }
}

@media (max-width: 767px) {
  .page-products .lib-table {
    min-width: 560px;
  }

  .page-products .lib-table--changes {
    min-width: 660px;
  }

  .page-products .lib-table--diff {
    min-width: 640px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}
<<<END>>>