.page-products .hero__split {
  display: grid;
  gap: 2.5rem;
}

.page-products .hero__copy h1 {
  margin: .5rem 0 1rem;
  font-size: clamp(2.2rem, 6.2vw, 3.9rem);
  line-height: 1.08;
  letter-spacing: -.02em;
}

.page-products .hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin: 1.75rem 0 2rem;
}

.page-products .hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 2.25rem;
  margin: 0;
  padding: 1.25rem 0 0;
  list-style: none;
  border-top: 2px solid var(--line);
}

.page-products .hero__facts .stat {
  display: flex;
  flex-direction: column;
  gap: .15rem;
}

.page-products .hero__facts .stat__num {
  font-family: var(--font-mono);
  font-size: 1.9rem;
  font-weight: 800;
  color: var(--mint);
  line-height: 1;
}

.page-products .hero__facts .stat__label {
  font-size: .8rem;
  letter-spacing: .06em;
  color: var(--muted);
}

/* 首屏视觉：纯 CSS 技能树 */
.page-products .hero__visual {
  position: relative;
  padding: 1.5rem 1.5rem 1.75rem;
  border: 2px solid var(--line-strong);
  background:
    radial-gradient(circle at 18% 12%, rgba(25, 240, 176, .16), transparent 56%),
    radial-gradient(circle at 92% 84%, rgba(255, 122, 47, .14), transparent 52%),
    var(--ink-2);
  box-shadow: 8px 8px 0 rgba(25, 240, 176, .16);
}

.page-products .hv-caption {
  margin: 0 0 1rem;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .14em;
  color: var(--muted);
}

.page-products .hv-tree {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .hv-tree li {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: .8rem;
  padding: .7rem 0 .7rem 2.6rem;
}

.page-products .hv-tree li::before {
  content: "";
  position: absolute;
  left: .3rem;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--mint-deep), rgba(25, 240, 176, .18));
}

.page-products .hv-tree li:first-child::before {
  top: 50%;
}

.page-products .hv-tree li:last-child::before {
  bottom: 50%;
}

.page-products .hv-tree li::after {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 14px;
  height: 14px;
  transform: translateY(-50%) rotate(45deg);
  background: var(--ink);
  border: 2px solid var(--mint);
}

.page-products .hv-tree li.is-focus::after {
  background: var(--orange);
  border-color: var(--orange);
  box-shadow: 0 0 0 4px rgba(255, 122, 47, .18);
}

.page-products .hv-idx {
  font-family: var(--font-mono);
  font-size: .82rem;
  font-weight: 700;
  color: var(--mint);
}

.page-products .hv-tree li.is-focus .hv-idx {
  color: var(--orange);
}

.page-products .hv-name {
  font-size: .98rem;
  color: var(--text);
}

/* 技能树总览 */
.page-products .tree-lede {
  max-width: 62ch;
}

.page-products .tree-overview {
  margin: 2rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1rem;
}

.page-products .tree-node {
  position: relative;
  padding: 1.25rem 1.25rem 1.4rem;
  border: 2px solid var(--line);
  background: linear-gradient(180deg, var(--panel), var(--ink-2));
  transition: border-color .2s ease, transform .2s ease;
}

.page-products .tree-node--key {
  border-color: var(--line-strong);
  background: linear-gradient(180deg, rgba(25, 240, 176, .10), var(--ink-2));
}

.page-products .tree-node:hover {
  border-color: var(--mint);
  transform: translateY(-3px);
}

.page-products .tree-node__idx {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--mint);
  line-height: 1;
}

.page-products .tree-node--key .tree-node__idx {
  color: var(--orange);
}

.page-products .tree-node__title {
  margin: .75rem 0 .4rem;
  font-size: 1.05rem;
  color: var(--text);
}

.page-products .tree-node__desc {
  margin: 0 0 .9rem;
  font-size: .9rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-products .tree-node__link {
  font-size: .82rem;
  letter-spacing: .06em;
  color: var(--mint);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .18s ease;
}

.page-products .tree-node__link:hover,
.page-products .tree-node__link:focus-visible {
  border-bottom-color: var(--mint);
}

/* 步骤快捷定位 */
.page-products .step-nav {
  position: sticky;
  top: 4.5rem;
  z-index: 6;
  margin: 0 0 1rem;
  background: rgba(7, 12, 11, .94);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-products .step-nav__track {
  overflow-x: auto;
  scrollbar-width: none;
}

.page-products .step-nav__track::-webkit-scrollbar {
  display: none;
}

.page-products .step-nav ul {
  display: flex;
  gap: .4rem;
  margin: 0;
  padding: .7rem 0;
  list-style: none;
  min-width: max-content;
}

.page-products .step-nav a {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .5rem .95rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: .85rem;
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
  transition: color .18s ease, border-color .18s ease, background-color .18s ease;
}

.page-products .step-nav a:hover,
.page-products .step-nav a:focus-visible {
  color: var(--ink);
  background: var(--mint);
  border-color: var(--mint);
}

.page-products .step-nav a.is-key {
  color: var(--orange);
  border-color: rgba(255, 122, 47, .5);
}

.page-products .step-nav a.is-key:hover,
.page-products .step-nav a.is-key:focus-visible {
  color: var(--ink);
  background: var(--orange);
  border-color: var(--orange);
}

.page-products .sv-idx {
  font-family: var(--font-mono);
  font-size: .75rem;
  font-weight: 700;
}

/* 步骤区块 */
.page-products .step-block {
  scroll-margin-top: 7.5rem;
}

.page-products .step-block__head {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding-top: 1.1rem;
  margin-bottom: 1.5rem;
  border-top: 2px solid var(--line);
}

.page-products .step-block__head .section-title {
  margin: .2rem 0 0;
  font-size: clamp(1.5rem, 4vw, 2.3rem);
}

.page-products .step-block__num {
  font-family: var(--font-mono);
  font-size: clamp(2.2rem, 7vw, 3.6rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -.04em;
  color: var(--mint);
}

.page-products .step-block__body {
  display: grid;
  gap: 1.75rem;
}

.page-products .step-block__text p {
  margin: 0;
  line-height: 1.85;
}

.page-products .step-block__media {
  margin: 0;
}

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

.page-products .tick-list {
  margin: 1.35rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: .6rem;
}

.page-products .tick-list li {
  position: relative;
  padding-left: 1.5rem;
  font-size: .95rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-products .tick-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .7em;
  width: 12px;
  height: 2px;
  background: var(--mint);
}

/* 第 3 步焦点态 */
.page-products .step-block--focus {
  position: relative;
  padding-left: 1.15rem;
  border-left: 3px solid var(--mint);
  background: linear-gradient(180deg, rgba(25, 240, 176, .07), rgba(25, 240, 176, 0) 65%);
}

.page-products .compare {
  margin-top: 2rem;
  overflow-x: auto;
}

.page-products .compare table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
}

.page-products .compare__caption {
  padding-bottom: .9rem;
  text-align: left;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .12em;
  color: var(--muted);
}

.page-products .compare th,
.page-products .compare td {
  padding: .9rem 1rem;
  text-align: left;
  font-size: .92rem;
  line-height: 1.65;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.page-products .compare thead th {
  font-family: var(--font-mono);
  font-size: .76rem;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--muted);
  border-bottom: 2px solid var(--line-strong);
}

.page-products .compare tbody th {
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
}

.page-products .compare tbody td {
  color: var(--muted);
}

.page-products .compare tbody td strong {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--mint);
}

.page-products .compare tbody tr {
  transition: background-color .18s ease;
}

.page-products .compare tbody tr:hover,
.page-products .compare tbody tr:focus-within {
  background: rgba(25, 240, 176, .08);
}

.page-products .step-block__details {
  margin-top: 1.5rem;
}

.page-products .step-block__details .panel-details__body a {
  color: var(--mint);
}

/* 下载分类 */
.page-products .dl-list {
  margin: 2rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1rem;
}

.page-products .dl-item {
  position: relative;
  padding: 1.25rem 1.25rem 1.4rem;
  background: var(--panel);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
  transition: border-color .2s ease;
}

.page-products .dl-item:hover {
  border-color: var(--mint);
}

.page-products .dl-item__idx {
  font-family: var(--font-mono);
  font-size: .8rem;
  font-weight: 800;
  letter-spacing: .1em;
  color: var(--amber);
}

.page-products .dl-item__title {
  margin: .5rem 0 .35rem;
  font-size: 1.08rem;
  color: var(--text);
}

.page-products .dl-item__desc {
  margin: 0;
  font-size: .9rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-products .dl-note {
  margin: 1.25rem 0 0;
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .05em;
  color: var(--muted);
}

/* 后续入口 */
.page-products .next-grid {
  margin-top: 1.75rem;
}

.page-products .next-card {
  display: block;
  padding: 1.5rem 1.4rem 1.6rem;
  border: 2px solid var(--line);
  background: var(--ink-2);
  color: var(--text);
  text-decoration: none;
  transition: border-color .2s ease, transform .2s ease, background-color .2s ease;
}

.page-products .next-card:hover,
.page-products .next-card:focus-visible {
  border-color: var(--mint);
  background: var(--panel);
  transform: translateY(-3px);
}

.page-products .next-card__tag {
  display: inline-block;
  margin-bottom: .85rem;
}

.page-products .next-card h3 {
  margin: 0 0 .5rem;
  font-size: 1.1rem;
  line-height: 1.45;
}

.page-products .next-card p {
  margin: 0;
  font-size: .9rem;
  line-height: 1.7;
  color: var(--muted);
}

@media (min-width: 640px) {
  .page-products .dl-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-products .tree-overview {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 1.25rem;
  }

  .page-products .tree-node:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 2.1rem;
    right: -1.25rem;
    width: 1.25rem;
    height: 2px;
    background: linear-gradient(90deg, var(--mint), rgba(25, 240, 176, 0));
  }
}

@media (min-width: 880px) {
  .page-products .hero__split {
    grid-template-columns: 1.1fr .9fr;
    align-items: center;
    gap: 3.5rem;
  }

  .page-products .step-block__body {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
    gap: 3rem;
  }

  .page-products .step-block--flip .step-block__body .step-block__text {
    order: 2;
  }

  .page-products .dl-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 480px) {
  .page-products .hero__visual {
    box-shadow: 5px 5px 0 rgba(25, 240, 176, .16);
  }

  .page-products .hero__facts {
    gap: 1.25rem;
  }

  .page-products .step-block--focus {
    padding-left: .85rem;
  }
}