.page-products {
  --pf-band: clamp(48px, 7vw, 96px);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-cn);
}

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

.page-products .pf-crumb {
  padding: clamp(16px, 2.4vw, 26px) 0 0;
}

.page-products .pf-crumb .breadcrumb {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--stone);
}

.page-products .pf-crumb .breadcrumb a {
  color: var(--green);
  text-decoration: none;
}

.page-products .pf-crumb .breadcrumb a:hover {
  color: var(--flame);
}

/* ---------- 首屏 ---------- */
.page-products .pf-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(20px, 3.4vw, 40px) 0 clamp(34px, 6vw, 68px);
}

.page-products .pf-hero::before {
  content: "";
  position: absolute;
  top: -16%;
  right: -22%;
  width: min(540px, 72vw);
  aspect-ratio: 1 / 1;
  background: linear-gradient(150deg, rgba(14, 124, 102, .17), rgba(58, 45, 92, .17) 55%, rgba(240, 90, 50, .15));
  transform: rotate(-14deg);
  pointer-events: none;
}

.page-products .pf-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  grid-template-columns: minmax(0, 1fr);
}

.page-products .pf-hero__title {
  margin: 10px 0 0;
  font-size: clamp(28px, 6.6vw, 58px);
  line-height: 1.08;
  transform: skewX(-6deg);
  transform-origin: left bottom;
}

.page-products .pf-hero__lede {
  margin: clamp(14px, 2vw, 20px) 0 0;
  max-width: 58ch;
}

.page-products .pf-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(18px, 2.6vw, 28px);
}

.page-products .pf-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 0;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-products .pf-stat {
  background: var(--paper-3);
  padding: 14px 14px 16px;
}

.page-products .pf-stat dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--stone);
}

.page-products .pf-stat dd {
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(19px, 3vw, 24px);
  font-weight: 700;
  color: var(--green);
  letter-spacing: .04em;
}

/* ---------- 章节索引 ---------- */
.page-products .pf-index {
  padding: 0 0 var(--pf-band);
}

.page-products .pf-index__list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  border-top: 2px solid var(--green);
}

.page-products .pf-index__item {
  border-bottom: 1px solid var(--line-soft);
}

.page-products .pf-index__item a {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 3px 10px;
  padding: 13px 4px;
  text-decoration: none;
  color: inherit;
  transition: transform .2s ease, background .2s ease;
}

.page-products .pf-index__item a:hover {
  transform: translateX(6px);
  background: rgba(14, 124, 102, .07);
}

.page-products .pf-index__num {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--flame);
  padding-top: 4px;
}

.page-products .pf-index__name {
  font-size: 16px;
  font-weight: 800;
}

.page-products .pf-index__desc {
  font-size: 13px;
  color: var(--stone);
  line-height: 1.6;
}

/* ---------- 章节头 ---------- */
.page-products .pf-chapter {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(22px, 3.4vw, 40px);
}

.page-products .pf-chapter .chapter-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(46px, 9vw, 92px);
  line-height: .78;
  letter-spacing: .02em;
  color: var(--green);
  opacity: .22;
}

.page-products .pf-chapter h2 {
  margin: 8px 0 0;
}

.page-products .pf-chapter .lede {
  margin: 12px 0 0;
  max-width: 62ch;
}

/* ---------- 通用双栏 ---------- */
.page-products .pf-split {
  display: grid;
  gap: clamp(20px, 3vw, 38px);
  grid-template-columns: minmax(0, 1fr);
}

/* ---------- 模块 ---------- */
.page-products .pf-modules {
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(0, 1fr);
}

.page-products .pf-module {
  background: var(--paper-3);
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--green);
  padding: 16px 16px 18px;
  transition: transform .22s ease, box-shadow .22s ease;
}

.page-products .pf-module:nth-child(2) { border-left-color: var(--flame); }
.page-products .pf-module:nth-child(3) { border-left-color: var(--clay); }
.page-products .pf-module:nth-child(4) { border-left-color: var(--speed); }

.page-products .pf-module:hover {
  transform: translate(4px, -4px);
  box-shadow: var(--shadow-1);
}

.page-products .pf-module__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--stone);
}

.page-products .pf-module h3 {
  margin: 6px 0 8px;
  font-size: 18px;
  font-weight: 800;
}

.page-products .pf-module p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
}

.page-products .pf-module__gain {
  margin-top: 10px !important;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
  color: var(--moss);
  font-size: 13px !important;
}

/* ---------- 深色 V4 章节 ---------- */
.page-products .pf-dark {
  background: linear-gradient(155deg, var(--ink) 0%, var(--night) 64%, #2a2340 100%);
  color: var(--paper);
}

.page-products .pf-dark .pf-chapter .chapter-num {
  color: var(--paper);
  opacity: .16;
}

.page-products .pf-dark .eyebrow {
  color: var(--speed);
}

.page-products .pf-dark .lede {
  color: rgba(244, 239, 226, .76);
}

.page-products .pf-shift {
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(0, 1fr);
}

.page-products .pf-shift__col {
  border: 1px solid rgba(244, 239, 226, .16);
  background: rgba(244, 239, 226, .04);
  padding: 16px;
}

.page-products .pf-shift__col--now {
  border-color: rgba(240, 90, 50, .5);
  background: rgba(240, 90, 50, .1);
}

.page-products .pf-shift__label {
  margin: 0 0 8px;
  color: rgba(244, 239, 226, .6);
}

.page-products .pf-shift__col--now .pf-shift__label {
  color: var(--speed);
}

.page-products .pf-shift__col p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: rgba(244, 239, 226, .9);
}

.page-products .pf-checks {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products .pf-checks li {
  position: relative;
  padding-left: 22px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(244, 239, 226, .82);
}

.page-products .pf-checks li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: .55em;
  width: 8px;
  height: 8px;
  background: var(--flame);
  transform: rotate(45deg);
}

/* ---------- 资源 ---------- */
.page-products .pf-res-chips {
  margin-bottom: clamp(18px, 2.6vw, 28px);
}

.page-products .pf-res-chips .meter-label {
  margin: 0 0 8px;
  color: var(--stone);
}

.page-products .pf-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-products .pf-chips a {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  padding: 8px 13px;
  border: 1px solid var(--line);
  background: var(--paper-3);
  color: var(--ink);
  text-decoration: none;
  transition: border-color .2s ease, color .2s ease, background .2s ease;
}

.page-products .pf-chips a:hover {
  border-color: var(--flame);
  color: var(--flame);
  background: #fff;
}

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

.page-products .pf-res {
  background: var(--paper-3);
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--silver);
  padding: 14px 16px 16px;
  scroll-margin-top: 130px;
  transition: border-color .2s ease, box-shadow .2s ease;
}

.page-products .pf-res:target {
  border-left-color: var(--flame);
  box-shadow: 0 0 0 2px rgba(240, 90, 50, .18);
  background: #fff;
}

.page-products .pf-res__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 12px;
}

.page-products .pf-res__name {
  font-size: 16px;
  font-weight: 800;
}

.page-products .pf-res__head .meta {
  color: var(--stone);
}

.page-products .pf-res p {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--ink);
}

/* ---------- 版本对照表 ---------- */
.page-products .pf-tablewrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  background: var(--paper-3);
}

.page-products .pf-table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-products .pf-table th,
.page-products .pf-table td {
  text-align: left;
  padding: 12px 14px;
  vertical-align: top;
}

.page-products .pf-table thead th {
  position: sticky;
  top: 0;
  background: var(--moss);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .08em;
  white-space: nowrap;
}

.page-products .pf-table tbody th {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--green);
  letter-spacing: .06em;
  white-space: nowrap;
}

.page-products .pf-table tbody td {
  border-top: 1px solid var(--line-soft);
  color: var(--ink);
}

.page-products .pf-table tbody tr:last-child td,
.page-products .pf-table tbody tr:last-child th {
  background: rgba(14, 124, 102, .08);
}

/* ---------- 步骤列表 ---------- */
.page-products .pf-steps {
  margin-top: clamp(24px, 3.4vw, 36px);
}

.page-products .pf-ol {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-products .pf-ol li {
  position: relative;
  padding: 12px 14px 12px 16px;
  border-left: 2px solid var(--clay);
  background: var(--paper-3);
  font-size: 14px;
  line-height: 1.72;
}

.page-products .pf-ol li .meta {
  display: block;
  color: var(--clay);
  margin-bottom: 4px;
}

/* ---------- 回退技能树 ---------- */
.page-products .pf-tree {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-products .pf-tree::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(var(--green), var(--silver));
}

.page-products .pf-tree__node {
  position: relative;
  padding: 0 0 22px 44px;
}

.page-products .pf-tree__node::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 6px;
  width: 12px;
  height: 12px;
  background: var(--paper);
  border: 2px solid var(--green);
  transform: rotate(45deg);
  transition: background .2s ease, border-color .2s ease;
}

.page-products .pf-tree__node:hover::before {
  background: var(--flame);
  border-color: var(--flame);
}

.page-products .pf-tree__node .meta {
  margin: 0 0 4px;
  color: var(--flame);
}

.page-products .pf-tree__node h3 {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 800;
}

.page-products .pf-tree__node p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--ink);
}

.page-products .pf-tree__node p:last-child {
  color: var(--stone);
}

/* ---------- 折叠说明 ---------- */
.page-products .pf-details-group {
  margin-top: 18px;
  display: grid;
  gap: 8px;
}

.page-products .pf-details {
  border: 1px solid var(--line);
  background: var(--paper-3);
}

.page-products .pf-details summary {
  cursor: pointer;
  padding: 13px 15px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-weight: 700;
  font-size: 15px;
  list-style: none;
}

.page-products .pf-details summary::-webkit-details-marker {
  display: none;
}

.page-products .pf-details summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--flame);
  line-height: 1;
}

.page-products .pf-details[open] summary::after {
  content: "–";
}

.page-products .pf-details__body {
  padding: 0 15px 15px;
  border-top: 1px solid var(--line-soft);
}

.page-products .pf-details__body p {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--stone);
}

/* ---------- 角色路径 ---------- */
.page-products .pf-roles {
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(0, 1fr);
}

.page-products .pf-role {
  position: relative;
  background: var(--paper-3);
  border: 1px solid var(--line-soft);
  padding: 18px 18px 16px;
  transition: transform .22s ease, box-shadow .22s ease;
}

.page-products .pf-role:hover {
  transform: translate(4px, -4px);
  box-shadow: var(--shadow-1);
}

.page-products .pf-role::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 58px;
  height: 3px;
  background: var(--green);
}

.page-products .pf-role:nth-child(2)::before { background: var(--flame); }
.page-products .pf-role:nth-child(3)::before { background: var(--clay); }

.page-products .pf-role__tag {
  margin: 6px 0 0;
  color: var(--stone);
}

.page-products .pf-role h3 {
  margin: 8px 0 10px;
  font-size: 18px;
  font-weight: 800;
}

.page-products .pf-role p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
}

.page-products .pf-role__next {
  margin-top: 14px !important;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: 12px !important;
  letter-spacing: .04em;
  color: var(--stone);
}

.page-products .pf-role__next a {
  color: var(--green);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.page-products .pf-role__next a:hover {
  color: var(--flame);
}

/* ---------- 收束 ---------- */
.page-products .pf-cta {
  position: relative;
  overflow: hidden;
  margin-top: clamp(12px, 2vw, 24px);
  background: linear-gradient(120deg, var(--moss) 0%, var(--green) 55%, #0a5c4c 100%);
  color: var(--paper);
  padding: clamp(38px, 6vw, 76px) 0;
}

.page-products .pf-cta::after {
  content: "";
  position: absolute;
  right: -10%;
  bottom: -60%;
  width: min(420px, 60vw);
  aspect-ratio: 1 / 1;
  background: rgba(240, 90, 50, .22);
  transform: rotate(24deg);
  pointer-events: none;
}

.page-products .pf-cta__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(20px, 3vw, 34px);
  grid-template-columns: minmax(0, 1fr);
}

.page-products .pf-cta .eyebrow {
  color: var(--speed);
}

.page-products .pf-cta h2 {
  margin: 8px 0 0;
}

.page-products .pf-cta .lede {
  margin: 12px 0 0;
  max-width: 58ch;
  color: rgba(244, 239, 226, .84);
}

.page-products .pf-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: flex-start;
}

/* ---------- 断点 ---------- */
@media (min-width: 560px) {
  .page-products .pf-index__list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(16px, 2.6vw, 34px);
  }

  .page-products .pf-index__item:nth-last-child(1):nth-child(odd) {
    grid-column: span 2;
  }

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

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

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

@media (min-width: 900px) {
  .page-products .pf-hero__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, .65fr);
    align-items: end;
  }

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

  .page-products .pf-chapter {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: clamp(18px, 3vw, 34px);
    align-items: start;
  }

  .page-products .pf-chapter .chapter-num {
    text-align: right;
  }

  .page-products .pf-split {
    grid-template-columns: minmax(0, 1.32fr) minmax(0, .68fr);
    align-items: start;
  }

  .page-products .pf-split--rev {
    grid-template-columns: minmax(0, .62fr) minmax(0, 1.38fr);
  }

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

  .page-products .pf-index__item:nth-last-child(1):nth-child(odd) {
    grid-column: auto;
  }

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

  .page-products .pf-cta__inner {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, .7fr);
    align-items: end;
  }

  .page-products .pf-cta__actions {
    justify-content: flex-end;
  }

  /* 技能树左右交错 */
  .page-products .pf-tree::before {
    left: 50%;
    top: 14px;
    bottom: 14px;
  }

  .page-products .pf-tree__node {
    width: calc(50% - 34px);
    padding: 0 0 28px;
  }

  .page-products .pf-tree__node:nth-child(odd) {
    margin-right: auto;
    text-align: right;
  }

  .page-products .pf-tree__node:nth-child(even) {
    margin-left: auto;
  }

  .page-products .pf-tree__node::before {
    top: 6px;
  }

  .page-products .pf-tree__node:nth-child(odd)::before {
    left: auto;
    right: -40px;
  }

  .page-products .pf-tree__node:nth-child(even)::before {
    left: -40px;
  }
}

@media (min-width: 1100px) {
  .page-products .pf-hero {
    padding-bottom: clamp(56px, 7vw, 84px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pf-module,
  .page-products .pf-role,
  .page-products .pf-index__item a,
  .page-products .pf-tree__node::before,
  .page-products .pf-chips a {
    transition: none;
  }

  .page-products .pf-module:hover,
  .page-products .pf-role:hover,
  .page-products .pf-index__item a:hover {
    transform: none;
  }
}
<<<END>>>