.page-products {
  --ix-gap: clamp(20px, 4.5vw, 44px);
}

/* ---------- 首屏 ---------- */
.page-products .ix-hero {
  padding-block: clamp(40px, 7vw, 84px) clamp(44px, 7vw, 76px);
}

.page-products .ix-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 6vw, 56px);
  align-items: center;
  margin-top: clamp(22px, 4vw, 38px);
}

.page-products .ix-hero__title {
  font-family: var(--font-display);
  font-size: clamp(29px, 6.2vw, 62px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: 12px 0 0;
  color: var(--white);
}

.page-products .ix-hero__lede {
  margin-top: clamp(16px, 2.6vw, 24px);
  max-width: 58ch;
  font-size: clamp(15px, 2.1vw, 17px);
  line-height: 1.85;
  color: rgba(245, 243, 239, 0.78);
}

.page-products .ix-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 4vw, 34px);
}

.page-products .ix-strip {
  list-style: none;
  margin: 0;
  padding: 14px;
  display: grid;
  gap: 4px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background:
    radial-gradient(120% 100% at 100% 0%, rgba(42, 33, 64, 0.85), transparent 62%),
    linear-gradient(180deg, rgba(18, 22, 28, 0.92), rgba(8, 9, 12, 0.6));
  box-shadow: 0 26px 60px -34px rgba(0, 0, 0, 0.95);
}

.page-products .ix-strip__item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid transparent;
  transition: border-color 0.3s ease, background-color 0.3s ease, transform 0.3s ease;
}

.page-products .ix-strip__dot {
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--stone);
}

.page-products .ix-strip__item:nth-child(1) .ix-strip__dot { background: var(--r1); box-shadow: 0 0 12px 0 rgba(255, 59, 48, 0.7); }
.page-products .ix-strip__item:nth-child(2) .ix-strip__dot { background: var(--r2); box-shadow: 0 0 12px 0 rgba(255, 149, 0, 0.7); }
.page-products .ix-strip__item:nth-child(3) .ix-strip__dot { background: var(--r3); box-shadow: 0 0 12px 0 rgba(255, 204, 0, 0.66); }
.page-products .ix-strip__item:nth-child(4) .ix-strip__dot { background: var(--r4); box-shadow: 0 0 12px 0 rgba(52, 199, 89, 0.66); }
.page-products .ix-strip__item:nth-child(5) .ix-strip__dot { background: var(--r5); box-shadow: 0 0 12px 0 rgba(0, 122, 255, 0.7); }
.page-products .ix-strip__item:nth-child(6) .ix-strip__dot { background: var(--r6); box-shadow: 0 0 12px 0 rgba(175, 82, 222, 0.7); }

.page-products .ix-strip__code {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--stone);
  min-width: 22px;
}

.page-products .ix-strip__label {
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--cream);
}

@media (hover: hover) {
  .page-products .ix-strip__item:hover {
    border-color: var(--line-strong);
    background-color: rgba(245, 243, 239, 0.04);
    transform: translateX(3px);
  }
}

@media (min-width: 900px) {
  .page-products .ix-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }
}

/* ---------- 索引总览 ---------- */
.page-products .ix-overview__lede {
  margin-top: 16px;
  max-width: 66ch;
  font-size: clamp(15px, 2vw, 16.5px);
  line-height: 1.9;
  color: rgba(245, 243, 239, 0.76);
}

.page-products .ix-dash {
  margin-top: clamp(28px, 5vw, 44px);
}

.page-products .ix-overview__figure {
  margin: clamp(30px, 5vw, 48px) 0 0;
}

.page-products .ix-tree {
  margin-top: clamp(32px, 5vw, 52px);
}

.page-products .ix-tree__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-products .ix-branch {
  border-bottom: 1px solid var(--line);
}

.page-products .ix-branch__head {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 2px;
  cursor: pointer;
  list-style: none;
}

.page-products .ix-branch__head::-webkit-details-marker {
  display: none;
}

.page-products .ix-branch__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--stone);
}

.page-products .ix-branch__name {
  font-size: clamp(16px, 2.4vw, 19px);
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--cream);
  transition: color 0.25s ease;
}

.page-products .ix-branch__meta {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--stone);
  white-space: nowrap;
}

.page-products .ix-branch__caret {
  position: relative;
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  transition: border-color 0.3s ease;
}

.page-products .ix-branch__caret::before,
.page-products .ix-branch__caret::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  background: var(--stone);
  border-radius: 1px;
}

.page-products .ix-branch__caret::before {
  width: 9px;
  height: 1.5px;
}

.page-products .ix-branch__caret::after {
  width: 1.5px;
  height: 9px;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.page-products .ix-branch[open] .ix-branch__caret {
  border-color: var(--clay);
}

.page-products .ix-branch[open] .ix-branch__caret::after {
  opacity: 0;
  transform: translate(-50%, -50%) scaleY(0.2);
}

.page-products .ix-branch__sub {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 2px 0 4px 44px;
  display: grid;
  gap: 10px;
}

.page-products .ix-branch__sub::before {
  content: "";
  position: absolute;
  left: 17px;
  top: 6px;
  bottom: 14px;
  width: 1px;
  background: var(--line-strong);
}

.page-products .ix-branch__sub li {
  position: relative;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(245, 243, 239, 0.72);
}

.page-products .ix-branch__sub li::before {
  content: "";
  position: absolute;
  left: -27px;
  top: 0.82em;
  width: 16px;
  height: 1px;
  background: var(--line-strong);
}

.page-products .ix-branch__more {
  margin: 0 0 22px;
  padding-left: 44px;
  font-size: 13.5px;
}

.page-products .ix-branch__more a {
  color: var(--clay);
  text-decoration: none;
  border-bottom: 1px solid rgba(180, 103, 74, 0.45);
  padding-bottom: 1px;
  transition: color 0.25s ease, border-color 0.25s ease;
}

.page-products .ix-branch__more a:hover {
  color: var(--cream);
  border-color: var(--cream);
}

/* ---------- 三步路径 ---------- */
.page-products .ix-steps__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 5vw, 48px);
  margin-top: clamp(28px, 4vw, 40px);
}

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

.page-products .ix-step {
  position: relative;
  padding: 22px 22px 22px 58px;
  border-radius: 12px;
  border: 1px solid var(--line-soft);
  background: linear-gradient(120deg, rgba(27, 38, 52, 0.55), rgba(18, 22, 28, 0.18));
  transition: border-color 0.3s ease, transform 0.3s ease;
}

.page-products .ix-step__n {
  position: absolute;
  left: 18px;
  top: 24px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--stone);
}

.page-products .ix-step:nth-child(1) .ix-step__n { color: var(--r1); }
.page-products .ix-step:nth-child(2) .ix-step__n { color: var(--r3); }
.page-products .ix-step:nth-child(3) .ix-step__n { color: var(--r5); }

.page-products .ix-step__title {
  margin: 0 0 8px;
  font-size: clamp(16px, 2.4vw, 18px);
  font-weight: 700;
  color: var(--white);
}

.page-products .ix-step__text {
  margin: 0;
  font-size: 14.8px;
  line-height: 1.85;
  color: rgba(245, 243, 239, 0.72);
}

.page-products .ix-steps__figure {
  margin: 0;
}

@media (hover: hover) {
  .page-products .ix-step:hover {
    border-color: var(--line-strong);
    transform: translateY(-2px);
  }
}

@media (min-width: 920px) {
  .page-products .ix-steps__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
}

/* ---------- 分类明细 ---------- */
.page-products .ix-cats__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(32px, 5vw, 56px);
}

.page-products .ix-cats__list {
  list-style: none;
  margin: clamp(24px, 4vw, 36px) 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-products .ix-cat {
  padding: clamp(20px, 3vw, 28px);
  border-radius: 14px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(18, 22, 28, 0.88), rgba(8, 9, 12, 0.5));
  box-shadow: inset 0 1px 0 rgba(245, 243, 239, 0.05), 0 20px 44px -34px rgba(0, 0, 0, 0.95);
  transition: border-color 0.3s ease, transform 0.3s ease;
}

.page-products .ix-cat::before {
  content: "";
  display: block;
  width: 34px;
  height: 2px;
  border-radius: 2px;
  margin-bottom: 16px;
  background: var(--stone);
}

.page-products .ix-cat:nth-child(1)::before { background: var(--r1); }
.page-products .ix-cat:nth-child(2)::before { background: var(--r2); }
.page-products .ix-cat:nth-child(3)::before { background: var(--r3); }
.page-products .ix-cat:nth-child(4)::before { background: var(--r4); }
.page-products .ix-cat:nth-child(5)::before { background: var(--r5); }
.page-products .ix-cat:nth-child(6)::before { background: var(--r6); }

.page-products .ix-cat__top {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.page-products .ix-cat__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--stone);
}

.page-products .ix-cat__title {
  margin: 0 0 10px;
  font-size: clamp(17px, 2.6vw, 20px);
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.005em;
}

.page-products .ix-cat__text {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(245, 243, 239, 0.72);
}

.page-products .ix-cat__when {
  margin: 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--stone);
}

.page-products .ix-cat__when-label {
  display: inline-block;
  margin-right: 8px;
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid rgba(180, 103, 74, 0.7);
  color: var(--clay);
  font-size: 11.5px;
  letter-spacing: 0.06em;
}

.page-products .ix-cat__link {
  margin: 12px 0 0;
  font-size: 13.5px;
}

.page-products .ix-cat__link a {
  color: var(--cream);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 1px;
  transition: border-color 0.25s ease;
}

.page-products .ix-cat__link a:hover {
  border-color: var(--cream);
}

.page-products .ix-cats__aside {
  display: grid;
  gap: 20px;
  align-content: start;
}

.page-products .ix-cats__figure {
  margin: 0;
}

.page-products .ix-note {
  margin: 0;
}

@media (hover: hover) {
  .page-products .ix-cat:hover {
    border-color: var(--line-strong);
    transform: translateY(-2px);
  }
}

@media (min-width: 980px) {
  .page-products .ix-cats__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
}

/* ---------- 版本读法 ---------- */
.page-products .ix-version__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4.5vw, 48px);
  margin-top: clamp(26px, 4vw, 40px);
}

.page-products .ix-legend {
  margin: 0;
  display: grid;
  gap: 0;
}

.page-products .ix-legend__row {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 16px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-products .ix-legend__row:first-child {
  border-top: 1px solid var(--line-soft);
}

.page-products .ix-legend dt {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--moss);
  padding-top: 3px;
}

.page-products .ix-legend dd {
  margin: 0;
  font-size: 14.8px;
  line-height: 1.85;
  color: rgba(245, 243, 239, 0.74);
}

.page-products .ix-version__figure {
  margin: 0;
}

.page-products .ix-vtags {
  list-style: none;
  margin: clamp(30px, 5vw, 48px) 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-products .ix-vtag {
  padding: 20px 20px 18px;
  border-radius: 12px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--line-strong);
  background: rgba(18, 22, 28, 0.72);
  display: grid;
  gap: 8px;
  transition: border-color 0.3s ease, background-color 0.3s ease;
}

.page-products .ix-vtag:nth-child(1) { border-left-color: var(--r6); }
.page-products .ix-vtag:nth-child(2) { border-left-color: var(--r5); }
.page-products .ix-vtag:nth-child(3) { border-left-color: var(--r4); }
.page-products .ix-vtag:nth-child(4) { border-left-color: var(--r2); }

.page-products .ix-vtag__code {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.08em;
  color: var(--white);
}

.page-products .ix-vtag__scope {
  font-size: 14px;
  line-height: 1.75;
  color: rgba(245, 243, 239, 0.74);
}

.page-products .ix-vtag__time {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--stone);
}

@media (hover: hover) {
  .page-products .ix-vtag:hover {
    border-color: var(--line-strong);
    background-color: rgba(27, 38, 52, 0.85);
  }
}

@media (min-width: 720px) {
  .page-products .ix-vtags {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 920px) {
  .page-products .ix-version__layout {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    align-items: start;
  }
}

/* ---------- 命中与跳转 ---------- */
.page-products .ix-hit__lede {
  margin-top: 16px;
  max-width: 64ch;
  font-size: clamp(15px, 2vw, 16.5px);
  line-height: 1.9;
  color: rgba(245, 243, 239, 0.76);
}

.page-products .ix-loop {
  list-style: none;
  margin: clamp(28px, 4vw, 40px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-products .ix-loop__item {
  padding: clamp(20px, 3vw, 26px);
  border-radius: 14px;
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(27, 38, 52, 0.82), rgba(8, 9, 12, 0.55));
}

.page-products .ix-loop__n {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--stone);
}

.page-products .ix-loop__title {
  margin: 0 0 10px;
  font-size: clamp(16px, 2.4vw, 17.5px);
  font-weight: 700;
  color: var(--white);
}

.page-products .ix-loop__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(245, 243, 239, 0.72);
}

@media (min-width: 880px) {
  .page-products .ix-loop {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
  }

  .page-products .ix-loop__item {
    position: relative;
    padding-right: 34px;
    border-radius: 0;
    border-right: none;
  }

  .page-products .ix-loop__item:first-child {
    border-radius: 14px 0 0 14px;
  }

  .page-products .ix-loop__item:last-child {
    border-radius: 0 14px 14px 0;
    border-right: 1px solid var(--line);
    padding-right: clamp(20px, 3vw, 26px);
  }

  .page-products .ix-loop__item:not(:last-child)::after {
    content: "";
    position: absolute;
    right: 8px;
    top: 46px;
    width: 18px;
    height: 1px;
    background: linear-gradient(90deg, var(--line-strong), transparent);
  }
}

/* ---------- 移动端结构 ---------- */
.page-products .ix-mobile__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 5vw, 52px);
  align-items: start;
}

.page-products .ix-mobile__lede {
  margin-top: 16px;
  max-width: 56ch;
  font-size: clamp(15px, 2vw, 16.5px);
  line-height: 1.9;
  color: rgba(245, 243, 239, 0.76);
}

.page-products .ix-levels {
  list-style: none;
  margin: clamp(22px, 3.5vw, 32px) 0 0;
  padding: 0;
}

.page-products .ix-levels li {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 15px;
  line-height: 1.85;
  color: rgba(245, 243, 239, 0.75);
}

.page-products .ix-levels li:first-child {
  border-top: 1px solid var(--line-soft);
}

.page-products .ix-levels__n {
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--r5);
  white-space: nowrap;
}

.page-products .ix-levels li:nth-child(2) .ix-levels__n { color: var(--r3); }
.page-products .ix-levels li:nth-child(3) .ix-levels__n { color: var(--r4); }

.page-products .ix-mobile__figure {
  margin: 0;
}

@media (min-width: 900px) {
  .page-products .ix-mobile__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }
}

/* ---------- 收束 ---------- */
.page-products .ix-next {
  border-top: 1px solid var(--line);
}

.page-products .ix-next__inner {
  display: grid;
  gap: 20px;
  align-items: center;
}

.page-products .ix-next__title {
  margin: 0;
  font-size: clamp(20px, 3.4vw, 28px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-products .ix-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (min-width: 800px) {
  .page-products .ix-next__inner {
    grid-template-columns: minmax(0, 1fr) auto;
  }
}

/* ---------- 图片自适应 ---------- */
.page-products .media-frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

@media (prefers-reduced-motion: reduce) {
  .page-products .ix-strip__item,
  .page-products .ix-step,
  .page-products .ix-cat,
  .page-products .ix-vtag,
  .page-products .ix-branch__caret,
  .page-products .ix-branch__name {
    transition: none;
  }
}
</main>