.page-products {
  --pl-space: clamp(56px, 8vw, 112px);
  --pl-gap: clamp(16px, 2.4vw, 28px);
  background-color: var(--sand-100);
  overflow-x: clip;
}

/* ---------- 通用小节标题 ---------- */
.page-products .pl-head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding-bottom: 18px;
  margin-bottom: clamp(24px, 4vw, 40px);
  border-bottom: var(--rule);
}

.page-products .pl-head__num {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.08em;
  font-variant-numeric: tabular-nums;
  color: var(--ember-600);
  flex: none;
}

.page-products .pl-head__title {
  font-family: var(--font-display);
  font-size: clamp(22px, 3.4vw, 38px);
  font-weight: 900;
  line-height: 1.24;
  color: var(--ink-900);
  margin: 0;
  flex: 1 1 auto;
  min-width: 0;
}

.page-products .pl-head__line {
  display: none;
  flex: none;
  width: 96px;
  height: 4px;
  background: var(--ink-900);
  transform: translateY(-6px);
}

.page-products .pl-head--tight {
  margin-bottom: 20px;
}

@media (min-width: 860px) {
  .page-products .pl-head__line {
    display: block;
  }
}

/* ---------- 首屏 ---------- */
.page-products .pl-hero {
  position: relative;
  padding: clamp(24px, 4vw, 44px) 0 var(--pl-space);
  border-bottom: var(--border-heavy);
  overflow: clip;
}

.page-products .pl-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(to right, rgba(20, 17, 15, 0.06) 1px, transparent 1px);
  background-size: 88px 100%;
  pointer-events: none;
}

.page-products .pl-hero .breadcrumb {
  position: relative;
  z-index: 2;
  margin-bottom: clamp(20px, 4vw, 40px);
}

.page-products .pl-hero__grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 5vw, 56px);
  align-items: end;
}

.page-products .pl-hero__title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(38px, 8.6vw, 96px);
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--ink-900);
  margin: 12px 0 0;
}

.page-products .pl-hero__title em {
  font-style: normal;
  color: var(--ember-600);
}

.page-products .pl-hero__text {
  font-family: var(--font-serif);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--ink-600);
  max-width: 34em;
  margin: 22px 0 0;
}

.page-products .pl-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.page-products .pl-index {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 3px solid var(--ink-900);
}

.page-products .pl-index li {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  padding: 12px 0;
  border-bottom: 1px solid rgba(20, 17, 15, 0.28);
}

.page-products .pl-index__num {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--teal-700);
  font-variant-numeric: tabular-nums;
}

.page-products .pl-index__body {
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink-600);
}

.page-products .pl-index__body strong {
  font-weight: 900;
  color: var(--ink-900);
  font-variant-numeric: tabular-nums;
}

.page-products .pl-hero__trace {
  display: none;
  position: absolute;
  right: -4%;
  bottom: 4%;
  width: min(46%, 620px);
  height: auto;
  z-index: 1;
  pointer-events: none;
}

.page-products .pl-hero__trace path {
  stroke: var(--teal-300);
}

.page-products .pl-hero__trace path:nth-child(2) {
  stroke: var(--teal-700);
}

.page-products .pl-hero__trace circle {
  fill: var(--ember-600);
}

@media (min-width: 900px) {
  .page-products .pl-hero__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  }

  .page-products .pl-hero__trace {
    display: block;
  }
}

/* ---------- 通道地图 ---------- */
.page-products .pl-route {
  padding: var(--pl-space) 0;
  background: var(--sand-100);
}

.page-products .pl-route__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pl-gap);
}

.page-products .pl-route__figure {
  border: var(--border-heavy);
  background: var(--paper);
  box-shadow: var(--shadow-hard);
  margin: 0;
  padding: 0;
}

.page-products .pl-route__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-products .pl-route__nodes {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-products .pl-node {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  grid-template-areas:
    "num title"
    "num text";
  column-gap: 14px;
  padding: 16px 18px;
  background: var(--paper);
  border: 2px solid var(--ink-900);
}

.page-products .pl-node__num {
  grid-area: num;
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 200;
  line-height: 1;
  color: var(--teal-700);
}

.page-products .pl-node__title {
  grid-area: title;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 900;
  color: var(--ink-900);
  margin: 0 0 6px;
}

.page-products .pl-node__text {
  grid-area: text;
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-600);
  margin: 0;
}

.page-products .pl-note {
  margin: 26px 0 0;
  padding: 14px 18px;
  background: var(--ember-200);
  border-left: 6px solid var(--ember-600);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-900);
  max-width: 62em;
}

@media (min-width: 900px) {
  .page-products .pl-route__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
}

/* ---------- 内核分支 ---------- */
.page-products .pl-kernel {
  padding: var(--pl-space) 0;
  background: var(--sand-100);
  border-top: var(--rule);
}

.page-products .pl-kernel__intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  align-items: center;
  margin-bottom: clamp(28px, 4vw, 44px);
}

.page-products .pl-kernel__text {
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.9;
  color: var(--ink-600);
  margin: 0;
  max-width: 40em;
}

.page-products .pl-kernel__badge {
  display: block;
  width: 100%;
  max-width: 420px;
  height: auto;
  object-fit: contain;
}

.page-products .pl-tree {
  position: relative;
}

.page-products .pl-branch {
  background: var(--paper);
  border: 2px solid var(--ink-900);
  margin-bottom: 14px;
  transition: box-shadow 220ms var(--ease), transform 220ms var(--ease);
}

.page-products .pl-branch:hover {
  box-shadow: 6px 6px 0 var(--ink-900);
}

.page-products .pl-branch__summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
}

.page-products .pl-branch__summary::-webkit-details-marker {
  display: none;
}

.page-products .pl-branch__summary:focus-visible {
  outline: 3px solid var(--teal-700);
  outline-offset: 2px;
}

.page-products .pl-branch__num {
  font-family: var(--font-display);
  font-size: clamp(30px, 5vw, 44px);
  font-weight: 200;
  line-height: 1;
  color: var(--ink-900);
  opacity: 0.22;
  font-variant-numeric: tabular-nums;
  -webkit-text-stroke: 1px var(--ink-900);
  transition: opacity 200ms var(--ease), color 200ms var(--ease);
}

.page-products .pl-branch[open] .pl-branch__num {
  opacity: 1;
  color: var(--ember-200);
}

.page-products .pl-branch__meta {
  display: block;
  min-width: 0;
}

.page-products .pl-branch__name {
  display: block;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 900;
  color: var(--ink-900);
  line-height: 1.4;
}

.page-products .pl-branch__sym {
  display: block;
  font-family: var(--font-sans);
  font-size: 13px;
  line-height: 1.6;
  color: var(--teal-700);
  margin-top: 2px;
}

.page-products .pl-branch__toggle {
  position: relative;
  flex: none;
  width: 22px;
  height: 22px;
  border: 2px solid var(--ink-900);
}

.page-products .pl-branch__toggle::before,
.page-products .pl-branch__toggle::after {
  content: "";
  position: absolute;
  background: var(--ink-900);
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

.page-products .pl-branch__toggle::before {
  width: 10px;
  height: 2px;
}

.page-products .pl-branch__toggle::after {
  width: 2px;
  height: 10px;
  transition: opacity 200ms var(--ease);
}

.page-products .pl-branch[open] .pl-branch__toggle::after {
  opacity: 0;
}

.page-products .pl-branch[open] > .pl-branch__summary {
  border-bottom: 2px solid var(--ink-900);
  background: var(--sand-300);
}

.page-products .pl-path {
  list-style: none;
  margin: 0;
  padding: 8px 18px 4px;
  position: relative;
}

.page-products .pl-path__item {
  position: relative;
  padding: 10px 0 10px 26px;
  font-family: var(--font-sans);
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--ink-900);
  border-bottom: 1px dashed rgba(20, 17, 15, 0.22);
}

.page-products .pl-path__item:last-child {
  border-bottom: 0;
}

.page-products .pl-path__item::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 16px;
  width: 8px;
  height: 8px;
  background: var(--teal-700);
}

.page-products .pl-path__item::after {
  content: "";
  position: absolute;
  left: 9px;
  top: 24px;
  bottom: -6px;
  width: 2px;
  background: var(--teal-300);
}

.page-products .pl-path__item:last-child::after {
  display: none;
}

.page-products .pl-path__step {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--ember-600);
  border: 1px solid var(--ember-600);
  padding: 1px 6px;
  margin-right: 8px;
  vertical-align: 1px;
}

.page-products .pl-branch__fit {
  margin: 0;
  padding: 10px 18px 16px 44px;
  font-family: var(--font-sans);
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-600);
}

@media (min-width: 860px) {
  .page-products .pl-kernel__intro {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .page-products .pl-tree {
    padding-left: 64px;
  }

  .page-products .pl-tree::before {
    content: "";
    position: absolute;
    left: 22px;
    top: 16px;
    bottom: 16px;
    width: 3px;
    background: var(--ink-900);
  }

  .page-products .pl-branch {
    position: relative;
    margin-bottom: 18px;
  }

  .page-products .pl-branch::before {
    content: "";
    position: absolute;
    left: -42px;
    top: 40px;
    width: 42px;
    height: 3px;
    background: var(--ink-900);
  }

  .page-products .pl-branch::after {
    content: "";
    position: absolute;
    left: -49px;
    top: 34px;
    width: 12px;
    height: 12px;
    background: var(--teal-700);
    border: 2px solid var(--ink-900);
  }
}

/* ---------- 适配矩阵 ---------- */
.page-products .pl-matrix {
  padding: var(--pl-space) 0;
  background: var(--sand-100);
  border-top: var(--rule);
}

.page-products .pl-matrix__lead {
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.9;
  color: var(--ink-600);
  max-width: 40em;
  margin: 0 0 clamp(24px, 4vw, 36px);
}

.page-products .pl-matrix__scroll {
  overflow-x: auto;
  border: var(--border-heavy);
  box-shadow: var(--shadow-hard);
  background: var(--paper);
  -webkit-overflow-scrolling: touch;
}

.page-products .pl-table {
  width: 100%;
  min-width: 700px;
  border-collapse: collapse;
  font-family: var(--font-sans);
  font-size: 13.5px;
  line-height: 1.6;
}

.page-products .pl-table thead th {
  background: var(--teal-700);
  color: var(--paper);
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-align: left;
  padding: 14px 16px;
  border-right: 1px solid rgba(255, 251, 242, 0.3);
  white-space: nowrap;
}

.page-products .pl-table thead th:first-child {
  background: var(--ink-900);
  color: var(--ink-inverse);
}

.page-products .pl-table tbody th {
  background: var(--sand-300);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 14px;
  color: var(--ink-900);
  text-align: left;
  padding: 14px 16px;
  border-top: 1px solid rgba(20, 17, 15, 0.25);
  white-space: nowrap;
}

.page-products .pl-table td {
  position: relative;
  padding: 14px 16px;
  color: var(--ink-900);
  border-top: 1px solid rgba(20, 17, 15, 0.25);
  border-right: 1px solid rgba(20, 17, 15, 0.15);
  vertical-align: top;
}

.page-products .pl-table tbody tr:nth-child(even) td {
  background: var(--sand-050);
}

.page-products .pl-cell__sub {
  display: block;
  font-size: 12px;
  color: var(--teal-700);
  margin-top: 3px;
  font-variant-numeric: tabular-nums;
}

.page-products .pl-cell__na {
  display: inline-block;
  font-size: 12px;
  color: var(--ink-600);
  border: 1px dashed rgba(74, 68, 60, 0.6);
  padding: 1px 6px;
}

.page-products .pl-table td[data-tip]:hover {
  background: var(--ember-200);
}

@media (hover: hover) and (min-width: 760px) {
  .page-products .pl-table td[data-tip]:hover::after {
    content: attr(data-tip);
    position: absolute;
    left: 12px;
    bottom: calc(100% + 8px);
    z-index: 6;
    background: var(--ink-900);
    color: var(--ink-inverse);
    font-size: 12px;
    line-height: 1.5;
    padding: 6px 10px;
    white-space: nowrap;
    box-shadow: 4px 4px 0 rgba(20, 17, 15, 0.25);
  }
}

.page-products .pl-matrix__figure {
  margin: clamp(26px, 4vw, 40px) 0 0;
}

.page-products .pl-matrix__figure img {
  display: block;
  width: 100%;
  max-width: 820px;
  height: auto;
  object-fit: contain;
  opacity: 0.9;
}

/* ---------- 登录态 ---------- */
.page-products .pl-session {
  padding: var(--pl-space) 0;
  background: var(--paper);
  border-top: var(--border-heavy);
}

.page-products .pl-session__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-products .pl-session__text {
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.9;
  color: var(--ink-600);
  margin: 0 0 22px;
  max-width: 38em;
}

.page-products .pl-session__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-products .pl-session__list li {
  padding-left: 18px;
  border-left: 5px solid var(--teal-700);
  font-family: var(--font-sans);
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink-600);
}

.page-products .pl-session__list strong {
  display: block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 15.5px;
  color: var(--ink-900);
  margin-bottom: 4px;
}

.page-products .pl-session__link {
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-600);
  margin: 22px 0 0;
}

.page-products .pl-session a {
  color: var(--teal-700);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-products .pl-session a:hover {
  color: var(--ember-600);
}

.page-products .pl-session__figure {
  margin: 0;
  border: 2px solid var(--ink-900);
  background: var(--sand-050);
  padding: 14px;
}

.page-products .pl-session__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
}

@media (min-width: 900px) {
  .page-products .pl-session__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: center;
  }
}

/* ---------- 四阶段流程 ---------- */
.page-products .pl-flow {
  padding: var(--pl-space) 0;
  background: var(--ink-900);
  color: var(--ink-inverse);
  border-top: var(--border-heavy);
  border-bottom: var(--border-heavy);
}

.page-products .pl-head--dark {
  border-bottom-color: rgba(247, 241, 228, 0.35);
}

.page-products .pl-head--dark .pl-head__title {
  color: var(--ink-inverse);
}

.page-products .pl-head--dark .pl-head__line {
  background: var(--teal-300);
}

.page-products .pl-flow__lead {
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.9;
  color: rgba(247, 241, 228, 0.78);
  max-width: 38em;
  margin: 0 0 clamp(26px, 4vw, 40px);
}

.page-products .pl-stages {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-products .pl-stage {
  position: relative;
  padding: 20px 20px 18px;
  border: 2px solid rgba(247, 241, 228, 0.4);
  background: rgba(247, 241, 228, 0.04);
  transition: border-color 220ms var(--ease), transform 220ms var(--ease), background-color 220ms var(--ease);
}

.page-products .pl-stage:hover {
  border-color: var(--teal-300);
  background: rgba(111, 187, 199, 0.1);
  transform: translateY(-4px);
}

.page-products .pl-stage__num {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(34px, 6vw, 54px);
  font-weight: 200;
  line-height: 0.95;
  color: var(--teal-300);
  -webkit-text-stroke: 1px var(--teal-300);
  font-variant-numeric: tabular-nums;
  margin-bottom: 10px;
}

.page-products .pl-stage__title {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 900;
  color: var(--ink-inverse);
  margin: 0 0 8px;
}

.page-products .pl-stage__text {
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.75;
  color: rgba(247, 241, 228, 0.8);
  margin: 0;
}

.page-products .pl-stage__time {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--ember-200);
  margin: 14px 0 0;
  padding-top: 10px;
  border-top: 1px dashed rgba(247, 241, 228, 0.3);
}

.page-products .pl-flow__figure {
  margin: clamp(28px, 4vw, 44px) 0 0;
}

.page-products .pl-flow__figure img {
  display: block;
  width: 100%;
  max-width: 820px;
  height: auto;
  object-fit: contain;
}

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

@media (min-width: 1080px) {
  .page-products .pl-stages {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 场景建议 ---------- */
.page-products .pl-scenes {
  padding: var(--pl-space) 0;
  background: var(--sand-100);
}

.page-products .pl-scenes__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pl-gap);
}

.page-products .pl-scene {
  padding: 20px 20px 22px;
  background: var(--paper);
  border: 2px solid var(--ink-900);
  box-shadow: 4px 4px 0 var(--ink-900);
  transition: transform 220ms var(--ease), box-shadow 220ms var(--ease);
}

.page-products .pl-scene:hover {
  transform: translateY(-4px);
  box-shadow: 10px 10px 0 var(--ink-900);
}

.page-products .pl-scene__tag {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--paper);
  background: var(--teal-700);
  padding: 3px 9px;
  margin-bottom: 12px;
}

.page-products .pl-scene__title {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 900;
  color: var(--ink-900);
  margin: 0 0 10px;
}

.page-products .pl-scene__text {
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-600);
  margin: 0;
}

@media (min-width: 620px) {
  .page-products .pl-scenes__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .page-products .pl-scenes__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 收尾引导 ---------- */
.page-products .pl-cta {
  padding: clamp(44px, 6vw, 76px) 0;
  background: var(--sand-300);
  border-top: var(--border-heavy);
}

.page-products .pl-cta__inner {
  display: grid;
  gap: 22px;
}

.page-products .pl-cta__title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(28px, 4.6vw, 52px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--ink-900);
  margin: 0;
}

.page-products .pl-cta__text {
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.9;
  color: var(--ink-600);
  margin: 14px 0 0;
  max-width: 38em;
}

.page-products .pl-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.page-products .pl-cta__links {
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-600);
  margin: 0;
}

.page-products .pl-cta__links a {
  color: var(--ink-900);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 2px;
  text-decoration-color: var(--teal-700);
}

.page-products .pl-cta__links a:hover {
  color: var(--ember-600);
}

.page-products .pl-cta a:focus-visible,
.page-products .pl-hero a:focus-visible {
  outline: 3px solid var(--teal-700);
  outline-offset: 2px;
}

@media (min-width: 900px) {
  .page-products .pl-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    column-gap: 48px;
  }

  .page-products .pl-cta__links {
    grid-column: 1 / -1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pl-scene,
  .page-products .pl-stage,
  .page-products .pl-branch {
    transition: none;
  }

  .page-products .pl-scene:hover,
  .page-products .pl-stage:hover {
    transform: none;
  }
}