.page-products {
  --sol-gap: 18px;
  --sol-r-soft: 6px 26px 8px 22px;
  --sol-r-chip: 14px 4px 14px 4px;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  overflow-x: clip;
}

.page-products .container {
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

/* ---------- Hero ---------- */

.page-products .sol-hero {
  position: relative;
  padding: 24px 0 40px;
}

.page-products .sol-hero .h-display {
  margin: 14px 0 20px;
  max-width: 15ch;
  font-weight: 300;
  line-height: 1.08;
  letter-spacing: -0.01em;
}

.page-products .sol-hero .key {
  font-weight: 800;
  color: var(--cyan);
}

.page-products .sol-hero .lede {
  max-width: 44ch;
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--grey);
}

/* ---------- 章节索引条 ---------- */

.page-products .sol-chapters {
  background: var(--night);
  border-top: 1px solid var(--track);
  border-bottom: 1px solid var(--track);
}

.page-products .sol-chapters ul {
  display: flex;
  margin: 0;
  padding: 0 14px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-products .sol-chapters ul::-webkit-scrollbar {
  display: none;
}

.page-products .sol-chapters a {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 52px;
  padding: 0 16px;
  color: var(--grey);
  font-size: 14px;
  white-space: nowrap;
  text-decoration: none;
  border-right: 1px solid var(--track);
  transition: color 200ms var(--ease), background 200ms var(--ease);
}

.page-products .sol-chapters a .mono {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--index);
}

.page-products .sol-chapters a:hover {
  color: var(--paper);
}

.page-products .sol-chapters a[aria-current="true"] {
  background: var(--mist);
  color: var(--ink);
}

.page-products .sol-chapters a[aria-current="true"] .mono {
  color: var(--ink);
}

/* ---------- 章节骨架 ---------- */

.page-products .sol-chapter {
  position: relative;
  padding: 48px 0;
  border-bottom: 1px solid var(--track);
}

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

.page-products .sol-head .chapter-num {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-products .sol-chapter .h-section {
  margin: 0;
  font-size: 26px;
  font-weight: 500;
  line-height: 1.35;
  letter-spacing: -0.005em;
}

.page-products .sol-chapter .prose p {
  margin: 0 0 1.1em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--paper);
}

.page-products .sol-chapter .prose p:last-child {
  margin-bottom: 0;
}

.page-products .sol-after {
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--grey);
}

/* ---------- 横向栏目轨道 ---------- */

.page-products .sol-track-hint {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--index);
}

.page-products .sol-track {
  display: flex;
  margin: 0 0 28px;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.page-products .sol-track__item {
  flex: 0 0 auto;
  min-width: 216px;
  scroll-snap-align: start;
}

.page-products .sol-stop {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 42px 18px 20px;
  color: inherit;
  text-decoration: none;
  border-right: 1px solid var(--track);
}

.page-products .sol-stop::before {
  content: "";
  position: absolute;
  top: 22px;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--track);
}

.page-products .sol-stop::after {
  content: "";
  position: absolute;
  top: 18px;
  left: 18px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--night);
  border: 1px solid var(--index);
  transition: background 200ms var(--ease), border-color 200ms var(--ease), transform 200ms var(--ease);
}

.page-products .sol-stop:hover::after,
.page-products .sol-stop:focus-visible::after {
  border-color: var(--cyan);
}

.page-products .sol-stop.is-current::after {
  background: var(--amber);
  border-color: var(--amber);
  transform: scale(1.3);
}

.page-products .sol-stop__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--index);
}

.page-products .sol-stop__name {
  font-size: 18px;
  font-weight: 700;
  color: var(--paper);
}

.page-products .sol-stop.is-current .sol-stop__name {
  color: var(--mist);
}

.page-products .sol-stop__text {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--grey);
}

/* ---------- 图 ---------- */

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

.page-products .figure__media {
  overflow: hidden;
  background: var(--night);
  border: 1px solid var(--track);
  border-radius: var(--sol-r-soft);
}

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

.page-products .figure__caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--grey);
}

/* ---------- 双列错位 ---------- */

.page-products .sol-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  margin: 26px 0;
}

.page-products .sol-split .figure {
  margin: 0;
}

/* ---------- 要点列表 ---------- */

.page-products .sol-notes {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .sol-notes li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 16px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--grey);
}

.page-products .sol-notes li:last-child {
  margin-bottom: 0;
}

.page-products .sol-notes li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: 1px solid var(--cyan);
}

.page-products .sol-notes li strong {
  color: var(--paper);
  font-weight: 700;
}

/* ---------- 底部栏演示 ---------- */

.page-products .sol-dock {
  padding: 18px;
  background: var(--night);
  border: 1px solid var(--track);
  border-radius: var(--sol-r-soft);
}

.page-products .sol-dock__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--index);
}

.page-products .sol-dock__panel summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 46px;
  padding: 0 16px;
  background: var(--slate);
  color: var(--paper);
  font-size: 15px;
  font-weight: 700;
  border-radius: var(--sol-r-chip);
  cursor: pointer;
  list-style: none;
}

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

.page-products .sol-dock__panel summary::after {
  content: "＋";
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--cyan);
}

.page-products .sol-dock__panel[open] summary::after {
  content: "－";
  color: var(--amber);
}

.page-products .sol-dock__panel ul {
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
  background: var(--ink);
  border: 1px solid var(--track);
  border-radius: var(--sol-r-soft);
  overflow: hidden;
}

.page-products .sol-dock__panel ul li + li {
  border-top: 1px solid var(--track);
}

.page-products .sol-dock__panel ul a {
  display: flex;
  align-items: center;
  min-height: 46px;
  padding: 10px 16px;
  color: var(--paper);
  font-size: 14.5px;
  text-decoration: none;
  transition: background 200ms var(--ease), color 200ms var(--ease);
}

.page-products .sol-dock__panel ul a:hover {
  background: var(--slate);
  color: var(--cyan);
}

.page-products .sol-dock__hint {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--index);
}

/* ---------- 十二分类阵列 ---------- */

.page-products .sol-grid12 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-products .sol-cell {
  padding: 16px 14px 18px;
  background: var(--night);
  border: 1px solid var(--track);
  border-radius: var(--sol-r-soft);
  transition: border-color 200ms var(--ease), transform 200ms var(--ease);
}

.page-products .sol-cell:hover {
  border-color: var(--slate);
  transform: translateY(-2px);
}

.page-products .sol-cell__num {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1;
  letter-spacing: 0.06em;
  color: var(--index);
}

.page-products .sol-cell:nth-child(3n+1) .sol-cell__num {
  color: var(--cyan);
}

.page-products .sol-cell:nth-child(3n+2) .sol-cell__num {
  color: var(--amber);
}

.page-products .sol-cell:nth-child(3n) .sol-cell__num {
  color: var(--grey);
}

.page-products .sol-cell__name {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--paper);
}

.page-products .sol-cell__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--grey);
}

/* ---------- 索引式列表 ---------- */

.page-products .sol-list {
  margin: 24px 0 26px;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--track);
}

.page-products .sol-list__item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px solid var(--track);
}

.page-products .sol-list__num {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-products .sol-list__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}

.page-products .sol-list__title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--paper);
}

.page-products .sol-list__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--grey);
}

/* ---------- 步骤 ---------- */

.page-products .sol-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: sol-step;
}

.page-products .sol-steps li {
  position: relative;
  padding-left: 46px;
  margin-bottom: 22px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--grey);
}

.page-products .sol-steps li:last-child {
  margin-bottom: 0;
}

.page-products .sol-steps li::before {
  counter-increment: sol-step;
  content: counter(sol-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-products .sol-steps li::after {
  content: "";
  position: absolute;
  left: 15px;
  top: 26px;
  bottom: -22px;
  width: 1px;
  background: var(--track);
}

.page-products .sol-steps li:last-child::after {
  display: none;
}

.page-products .sol-steps li strong {
  color: var(--paper);
  font-weight: 700;
}

/* ---------- 延伸入口 ---------- */

.page-products .sol-next {
  display: grid;
  gap: 12px;
  margin-top: 30px;
}

.page-products .sol-next a {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px;
  background: var(--night);
  border: 1px solid var(--track);
  border-radius: var(--sol-r-chip);
  color: var(--paper);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  transition: border-color 200ms var(--ease), background 200ms var(--ease);
}

.page-products .sol-next a span {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--index);
}

.page-products .sol-next a:hover {
  border-color: var(--cyan);
  background: var(--slate);
}

/* ---------- 断点 ---------- */

@media (min-width: 640px) {
  .page-products .sol-hero {
    padding: 32px 0 48px;
  }

  .page-products .sol-hero .lede {
    font-size: 17px;
  }

  .page-products .sol-chapter .h-section {
    font-size: 32px;
  }

  .page-products .sol-grid12 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
  }

  .page-products .sol-notes--two {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 32px;
  }

  .page-products .sol-notes--two li:last-child {
    margin-bottom: 16px;
  }
}

@media (min-width: 900px) {
  .page-products .sol-chapter {
    padding: 64px 0;
  }

  .page-products .sol-head {
    display: grid;
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 0 8px;
    align-items: baseline;
    margin-bottom: 24px;
  }

  .page-products .sol-head .chapter-num {
    margin-bottom: 0;
    padding-top: 8px;
  }

  .page-products .sol-chapter .h-section {
    font-size: 40px;
    line-height: 1.25;
  }

  .page-products .sol-split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 44px;
    align-items: start;
    margin: 32px 0;
  }

  .page-products .sol-split__col:last-child {
    padding-top: 24px;
  }

  .page-products .sol-track__item {
    min-width: 244px;
  }

  .page-products .sol-grid12 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    margin-top: 32px;
  }

  .page-products .sol-list__item {
    grid-template-columns: 52px minmax(0, 1fr);
    gap: 18px;
    padding: 20px 0;
  }

  .page-products .sol-next {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }
}

@media (min-width: 1120px) {
  .page-products .sol-hero {
    padding: 44px 0 64px;
  }

  .page-products .sol-hero .h-display {
    max-width: 17ch;
  }

  .page-products .sol-cell {
    min-height: 168px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .sol-cell,
  .page-products .sol-stop::after,
  .page-products .sol-next a {
    transition: none;
  }

  .page-products .sol-cell:hover {
    transform: none;
  }
}