.page-products {
  --pt-body: #C3D7D1;
  --pt-cut: 14deg;
  position: relative;
  overflow-x: hidden;
  padding-bottom: 88px;
  color: var(--paper);
  background:
    radial-gradient(920px 460px at 92% -6%, rgba(52, 242, 206, 0.10), transparent 62%),
    linear-gradient(180deg, rgba(52, 242, 206, 0.04) 0%, rgba(52, 242, 206, 0) 320px);
}

.page-products::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.34;
  background-image:
    linear-gradient(to right, rgba(30, 81, 69, 0.55) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(30, 81, 69, 0.55) 1px, transparent 1px);
  background-size: 32px 32px;
}

.page-products .pt-hero,
.page-products .pt-toc,
.page-products .pt-sec {
  position: relative;
  z-index: 1;
}

/* ---------- 首屏 ---------- */
.page-products .pt-hero {
  overflow: hidden;
  padding: 26px 0 44px;
  border-bottom: 1px solid var(--line);
}

.page-products .pt-hero::before {
  content: "";
  position: absolute;
  top: -150px;
  right: -200px;
  width: min(760px, 82vw);
  height: 540px;
  pointer-events: none;
  clip-path: polygon(20% 0, 100% 0, 100% 100%, 0 76%);
  background: linear-gradient(135deg, rgba(52, 242, 206, 0.20), rgba(52, 242, 206, 0) 60%);
}

.page-products .pt-hero::after {
  content: "";
  position: absolute;
  left: -110px;
  bottom: -140px;
  width: 340px;
  height: 340px;
  pointer-events: none;
  clip-path: polygon(0 0, 100% 28%, 72% 100%, 0 100%);
  background: linear-gradient(135deg, rgba(255, 139, 61, 0.16), rgba(255, 139, 61, 0) 68%);
}

.page-products .pt-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 32px;
}

.page-products .pt-hero h1 {
  margin: 14px 0 0;
  max-width: 15ch;
}

.page-products .pt-hero .lead {
  margin: 20px 0 0;
  max-width: 46ch;
  color: var(--pt-body);
}

.page-products .pt-hero .breadcrumb {
  margin-bottom: 18px;
}

.page-products .pt-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.page-products .pt-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 16px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(14, 42, 36, 0.92), rgba(6, 23, 19, 0.62));
}

.page-products .pt-stat__v {
  font-family: var(--ff-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(24px, 4vw, 34px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
}

.page-products .pt-stat__k {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

/* ---------- 章节索引条 ---------- */
.page-products .pt-toc {
  position: sticky;
  top: calc(var(--header-h) + var(--strip-h));
  z-index: 6;
  border-bottom: 1px solid var(--line);
  background: var(--ink-900);
}

.page-products .pt-toc__inner {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-top: 10px;
  padding-bottom: 10px;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-products .pt-toc__inner::-webkit-scrollbar {
  display: none;
}

.page-products .pt-toc__list {
  display: flex;
  align-items: center;
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .pt-toc a {
  display: inline-block;
  white-space: nowrap;
  padding: 3px 1px;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--ease), border-color var(--ease);
}

.page-products .pt-toc a:hover,
.page-products .pt-toc li.is-active a,
.page-products .pt-toc a.is-active {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* ---------- 章节容器 ---------- */
.page-products .pt-sec {
  padding: 56px 0;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: calc(var(--header-h) + var(--strip-h) + 56px);
}

.page-products .pt-sec__head {
  display: grid;
  gap: 26px;
  align-items: end;
}

.page-products .pt-sec__intro h2,
.page-products .pt-sec__head h2 {
  margin: 10px 0 0;
}

.page-products .pt-sec__note {
  margin: 14px 0 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--pt-body);
}

.page-products .pt-sec__fig {
  margin: 0;
  border: 1px solid var(--line);
}

.page-products .media-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-products .pt-read {
  margin-top: 32px;
  padding-left: 20px;
  border-left: 1px solid var(--line);
}

.page-products .pt-read .prose {
  max-width: 68ch;
  color: var(--pt-body);
}

.page-products .pt-read a {
  color: var(--cyan);
}

/* ---------- 筛选条 ---------- */
.page-products .pt-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 22px;
  margin: 30px 0 16px;
  padding: 12px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-products .pt-bar__hint {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

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

.page-products .seg button {
  font: inherit;
  font-size: 13px;
  letter-spacing: 0.08em;
  padding: 6px 12px;
  color: var(--muted);
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-radius: 2px;
  cursor: pointer;
  transition: color var(--ease), border-color var(--ease), background var(--ease);
}

.page-products .seg button:hover {
  color: var(--paper);
  border-color: var(--cyan-soft);
}

.page-products .seg button[aria-pressed="true"] {
  color: var(--cyan);
  border-color: var(--cyan);
  background: var(--ink-700);
}

/* ---------- 表格 ---------- */
.page-products .pt-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  background: rgba(6, 23, 19, 0.6);
}

.page-products .pt-matrix,
.page-products .pt-cov {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
}

.page-products .pt-matrix thead th,
.page-products .pt-cov thead th {
  position: sticky;
  top: 0;
  z-index: 2;
  background: var(--ink-700);
  text-align: left;
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-products .pt-matrix th,
.page-products .pt-matrix td,
.page-products .pt-cov th,
.page-products .pt-cov td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--line);
  border-right: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.65;
  vertical-align: top;
}

.page-products .pt-matrix tr > *:last-child,
.page-products .pt-cov tr > *:last-child {
  border-right: none;
}

.page-products .pt-matrix tbody th,
.page-products .pt-cov tbody th {
  font-weight: 400;
  color: var(--paper);
  white-space: nowrap;
  background: rgba(14, 42, 36, 0.72);
}

.page-products .pt-matrix td,
.page-products .pt-cov td {
  color: var(--pt-body);
}

.page-products .pt-matrix tbody tr:hover th,
.page-products .pt-matrix tbody tr:hover td {
  background: rgba(30, 81, 69, 0.34);
}

.page-products .pt-cell--diff {
  color: var(--paper);
  box-shadow: inset 0 0 0 1px var(--orange-deep);
  background: linear-gradient(180deg, rgba(255, 139, 61, 0.10), rgba(255, 139, 61, 0));
}

.page-products .pt-cov .pt-th-num {
  text-align: right;
}

.page-products .pt-cov .num {
  font-family: var(--ff-mono);
  font-variant-numeric: tabular-nums;
  text-align: right;
  color: var(--cyan-soft);
}

.page-products .pt-tag {
  display: inline-block;
  padding: 2px 8px;
  font-size: 11px;
  letter-spacing: 0.1em;
  border-radius: 2px;
  border: 1px solid var(--line);
  color: var(--muted);
  white-space: nowrap;
}

.page-products .pt-tag--a {
  color: var(--cyan);
  border-color: var(--cyan);
}

.page-products .pt-tag--b {
  color: var(--cyan-soft);
  border-color: rgba(147, 247, 230, 0.5);
}

.page-products .pt-tag--c {
  color: var(--orange);
  border-color: var(--orange-deep);
}

.page-products .pt-cov__fig,
.page-products .pt-scenes__fig {
  margin: 26px 0 0;
  border: 1px solid var(--line);
}

/* ---------- 会员中心功能 ---------- */
.page-products .pt-funcs {
  display: grid;
  gap: 1px;
  margin-top: 30px;
  border: 1px solid var(--line);
  background: var(--line);
}

.page-products .pt-func {
  background: var(--ink-800);
}

.page-products .pt-func summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
  transition: background var(--ease);
}

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

.page-products .pt-func summary:hover {
  background: var(--ink-700);
}

.page-products .pt-func summary::after {
  content: "＋";
  margin-left: auto;
  font-family: var(--ff-mono);
  font-size: 14px;
  color: var(--cyan);
}

.page-products .pt-func[open] summary::after {
  content: "－";
}

.page-products .pt-func__idx {
  font-family: var(--ff-mono);
  font-size: 13px;
  color: var(--cyan);
}

.page-products .pt-func__name {
  font-size: 17px;
  letter-spacing: 0.04em;
  color: var(--paper);
}

.page-products .pt-func__meta {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-products .pt-func__body {
  padding: 2px 20px 22px;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(52, 242, 206, 0.06), rgba(52, 242, 206, 0) 72%);
}

.page-products .pt-func__body p {
  margin: 16px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--pt-body);
}

.page-products .pt-func__body ul {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-products .pt-func__body li {
  position: relative;
  padding-left: 18px;
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-products .pt-func__body li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 1px;
  background: var(--cyan);
}

/* ---------- 刷新节奏 ---------- */
.page-products .pt-timeline {
  display: grid;
  gap: 1px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--line);
  background: var(--line);
}

.page-products .pt-timeline__item {
  position: relative;
  padding: 26px 20px 28px;
  background: var(--ink-800);
  transition: background var(--ease);
}

.page-products .pt-timeline__item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--orange));
}

.page-products .pt-timeline__item:hover {
  background: var(--ink-700);
}

.page-products .pt-timeline__time {
  display: block;
  font-family: var(--ff-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(24px, 4.4vw, 36px);
  line-height: 1.05;
  letter-spacing: -0.01em;
  color: var(--orange);
}

.page-products .pt-timeline__label {
  display: block;
  margin-top: 10px;
  font-size: 15px;
  letter-spacing: 0.04em;
  color: var(--paper);
}

.page-products .pt-timeline__desc {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--pt-body);
}

/* ---------- 查阅入口 ---------- */
.page-products .pt-paths {
  display: grid;
  gap: 20px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.page-products .pt-path {
  display: block;
  padding: 24px 22px 28px;
  color: inherit;
  text-decoration: none;
  background: var(--ink-800);
  box-shadow: inset 0 0 0 1px var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
  transition: background var(--ease), box-shadow var(--ease);
}

.page-products .pt-path:hover {
  background: var(--ink-700);
  box-shadow: inset 0 0 0 1px var(--cyan);
}

.page-products .pt-path__idx {
  display: block;
  font-family: var(--ff-mono);
  font-size: 13px;
  color: var(--cyan);
}

.page-products .pt-path__name {
  display: block;
  margin-top: 10px;
  font-size: 19px;
  letter-spacing: 0.04em;
  color: var(--paper);
}

.page-products .pt-path__desc {
  display: block;
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--pt-body);
}

/* ---------- 对比场景 ---------- */
.page-products .pt-scenes {
  display: grid;
  gap: 26px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.page-products .pt-scene {
  position: relative;
  padding-top: 16px;
  border-top: 2px solid var(--cyan);
}

.page-products .pt-scene:nth-child(2) {
  border-top-color: var(--cyan-soft);
}

.page-products .pt-scene:nth-child(3) {
  border-top-color: var(--orange);
}

.page-products .pt-scene__phase {
  display: block;
  font-family: var(--ff-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-products .pt-scene__title {
  margin: 10px 0 0;
  font-size: 20px;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--paper);
}

.page-products .pt-scene p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--pt-body);
}

.page-products .pt-tail {
  margin-top: 34px;
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--orange-deep);
  background: linear-gradient(90deg, rgba(255, 139, 61, 0.08), rgba(255, 139, 61, 0) 62%);
}

.page-products .pt-tail p {
  margin: 0;
  max-width: 74ch;
  font-size: 14px;
  line-height: 1.85;
  color: var(--pt-body);
}

.page-products .pt-tail a {
  color: var(--cyan);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-products .pt-sec {
    padding: 68px 0;
  }

  .page-products .pt-scenes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }

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

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

@media (min-width: 900px) {
  .page-products .pt-hero {
    padding: 30px 0 56px;
  }

  .page-products .pt-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: end;
  }

  .page-products .pt-sec__head--split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 40px;
  }

  .page-products .pt-sec__head--split .pt-sec__fig {
    margin: 0;
  }

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

  .page-products .pt-table-wrap {
    overflow: visible;
    border: 1px solid var(--line);
  }

  .page-products .pt-matrix,
  .page-products .pt-cov {
    min-width: 100%;
  }
}

@media (max-width: 560px) {
  .page-products .pt-hero h1 {
    max-width: none;
  }

  .page-products .pt-bar {
    flex-direction: column;
    align-items: flex-start;
  }

  .page-products .pt-matrix th,
  .page-products .pt-matrix td,
  .page-products .pt-cov th,
  .page-products .pt-cov td {
    padding: 10px 12px;
    font-size: 13.5px;
  }

  .page-products .pt-cov tbody th {
    white-space: normal;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pt-path,
  .page-products .pt-func summary,
  .page-products .pt-timeline__item,
  .page-products .seg button,
  .page-products .pt-toc a {
    transition: none;
  }
}