.page-products {
  --exp-gap: clamp(24px, 3.4vw, 40px);
  --exp-rail-w: 224px;
}

/* ============ HERO ============ */
.page-products .exp-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(20px, 4vw, 34px) 0 clamp(40px, 6vw, 76px);
  color: var(--on-dark);
  background:
    radial-gradient(1100px 520px at 84% -12%, rgba(0, 229, 255, .20), transparent 62%),
    radial-gradient(680px 420px at 2% 112%, rgba(255, 46, 147, .16), transparent 60%),
    linear-gradient(158deg, var(--navy-deep) 0%, var(--navy) 52%, var(--navy-2) 100%);
}

.page-products .exp-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, .055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .055) 1px, transparent 1px);
  background-size: 54px 54px;
  -webkit-mask-image: radial-gradient(circle at 50% 0%, #000 0%, transparent 76%);
  mask-image: radial-gradient(circle at 50% 0%, #000 0%, transparent 76%);
}

.page-products .exp-hero .shell {
  position: relative;
  z-index: 1;
}

.page-products .exp-hero .breadcrumb {
  margin-bottom: clamp(18px, 3vw, 30px);
  color: var(--on-dark-soft);
  font-size: 13px;
}

.page-products .exp-hero .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .exp-hero .breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--on-dark-faint);
}

.page-products .exp-hero .breadcrumb a {
  color: var(--on-dark-soft);
  text-decoration: none;
  transition: color .2s ease;
}

.page-products .exp-hero .breadcrumb a:hover,
.page-products .exp-hero .breadcrumb a:focus-visible {
  color: var(--cyan);
}

.page-products .exp-hero .breadcrumb [aria-current="page"] {
  color: var(--cyan);
}

.page-products .exp-hero-grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  grid-template-columns: 1fr;
  align-items: end;
}

.page-products .exp-hero-kicker {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--on-dark-soft);
}

.page-products .exp-hero-kicker .mono {
  padding: 3px 9px;
  border: 1px solid var(--line-cyan);
  border-radius: 999px;
  color: var(--cyan);
  letter-spacing: .1em;
}

.page-products .exp-hero h1 {
  margin: 0 0 18px;
  font-size: clamp(30px, 5.4vw, 52px);
  line-height: 1.16;
  letter-spacing: -.02em;
  color: var(--white);
  max-width: 20ch;
}

.page-products .exp-hero-lead {
  margin: 0 0 26px;
  max-width: 58ch;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.75;
  color: var(--on-dark-soft);
}

.page-products .exp-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* 状态面板 */
.page-products .exp-status {
  border: 1px solid var(--line-dark);
  border-radius: var(--r-lg);
  padding: 20px 22px 18px;
  background: linear-gradient(160deg, rgba(255, 255, 255, .10), rgba(255, 255, 255, .03));
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.page-products .exp-status-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--line-dark);
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--on-dark-soft);
}

.page-products .exp-status-head .mono {
  color: var(--gold);
}

.page-products .exp-status-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}

.page-products .exp-status-list li {
  display: grid;
  grid-template-columns: 14px 1fr auto;
  align-items: center;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255, 255, 255, .06);
  font-size: 14px;
}

.page-products .exp-status-list li:last-child {
  border-bottom: 0;
  padding-bottom: 2px;
}

.page-products .exp-status-key {
  color: var(--on-dark-soft);
}

.page-products .exp-status-val {
  font-size: 13px;
  color: var(--white);
}

/* ============ 主体骨架 ============ */
.page-products .exp-body {
  padding-top: clamp(28px, 4vw, 52px);
  padding-bottom: clamp(48px, 6vw, 86px);
}

.page-products .exp-layout {
  display: grid;
  gap: clamp(22px, 3.4vw, 46px);
  grid-template-columns: 1fr;
}

.page-products .exp-rail-title {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.page-products .exp-rail-list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-products .exp-rail-list li {
  flex: 0 0 auto;
}

.page-products .exp-rail-list a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: var(--panel-bg);
  font-size: 13px;
  line-height: 1.4;
  color: var(--ink-soft);
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s ease, border-color .2s ease, background-color .2s ease;
}

.page-products .exp-rail-list .mono {
  color: var(--cyan-deep);
  font-size: 12px;
}

.page-products .exp-rail-list a:hover,
.page-products .exp-rail-list a:focus-visible {
  color: var(--ink-strong);
  border-color: var(--line-cyan);
  background: rgba(0, 229, 255, .06);
}

.page-products .exp-flow {
  display: grid;
  gap: var(--exp-gap);
  min-width: 0;
}

/* ============ 内容块 ============ */
.page-products .exp-block {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: clamp(22px, 3.4vw, 40px);
  background: var(--panel-bg);
  box-shadow: var(--shadow-card);
  scroll-margin-top: calc(var(--header-h) + 18px);
}

.page-products .exp-block::after {
  content: "";
  position: absolute;
  left: clamp(22px, 3.4vw, 40px);
  top: 0;
  width: 56px;
  height: 3px;
  border-radius: 0 0 3px 3px;
  background: linear-gradient(90deg, var(--cyan), rgba(0, 229, 255, 0));
}

.page-products .exp-block--dark {
  border-color: var(--line-dark);
  color: var(--on-dark);
  background:
    radial-gradient(720px 340px at 92% 0%, rgba(0, 229, 255, .16), transparent 62%),
    linear-gradient(158deg, var(--navy) 0%, var(--navy-2) 100%);
  box-shadow: var(--shadow-lift);
}

.page-products .exp-block--dark::after {
  background: linear-gradient(90deg, var(--magenta), rgba(255, 46, 147, 0));
}

.page-products .exp-block--panel {
  background: linear-gradient(170deg, var(--mist) 0%, var(--panel-bg) 62%);
  border-color: var(--line-strong);
}

.page-products .exp-block--panel::after {
  background: linear-gradient(90deg, var(--gold), rgba(255, 184, 0, 0));
}

.page-products .exp-block-head {
  max-width: 68ch;
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-products .exp-block-kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.page-products .exp-block--dark .exp-block-kicker {
  color: var(--on-dark-faint);
}

.page-products .exp-block-kicker .mono {
  padding: 3px 8px;
  border-radius: 6px;
  border: 1px solid var(--line-cyan);
  color: var(--cyan-deep);
}

.page-products .exp-block--dark .exp-block-kicker .mono {
  color: var(--cyan);
  border-color: var(--line-cyan);
}

.page-products .exp-block h2 {
  margin: 0 0 14px;
  font-size: clamp(23px, 2.7vw, 34px);
  line-height: 1.24;
  letter-spacing: -.015em;
  color: var(--ink-strong);
}

.page-products .exp-block--dark h2 {
  color: var(--white);
}

.page-products .exp-block-desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-products .exp-block--dark .exp-block-desc {
  color: var(--on-dark-soft);
}

.page-products .exp-block-foot {
  margin: 26px 0 0;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
  font-size: 14px;
  color: var(--ink-soft);
}

.page-products .exp-block-foot a {
  color: var(--cyan-deep);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 144, 166, .35);
}

.page-products .exp-block-foot a:hover,
.page-products .exp-block-foot a:focus-visible {
  border-bottom-color: var(--cyan-deep);
}

/* ============ 分屏 ============ */
.page-products .exp-split {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  grid-template-columns: 1fr;
  align-items: start;
}

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

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

/* ============ 步骤 ============ */
.page-products .exp-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
  counter-reset: exp-step;
}

.page-products .exp-steps li {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: linear-gradient(120deg, rgba(0, 229, 255, .05), transparent 45%);
  transition: border-color .2s ease, transform .2s ease;
}

.page-products .exp-steps li:hover {
  border-color: var(--line-cyan);
  transform: translateX(3px);
}

.page-products .exp-step-no {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 32px;
  border-radius: var(--r-sm);
  background: var(--navy);
  color: var(--cyan);
  font-size: 13px;
}

.page-products .exp-steps h3 {
  margin: 0 0 6px;
  font-size: 16px;
  color: var(--ink-strong);
}

.page-products .exp-steps p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* ============ 资料分类 ============ */
.page-products .exp-docs {
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr;
}

.page-products .exp-doc {
  position: relative;
  overflow: hidden;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--panel-bg);
  transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
}

.page-products .exp-doc::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--cyan);
}

.page-products .exp-doc:nth-child(2)::before { background: var(--gold); }
.page-products .exp-doc:nth-child(3)::before { background: var(--magenta); }
.page-products .exp-doc:nth-child(4)::before { background: var(--green); }

.page-products .exp-doc:hover {
  border-color: var(--line-strong);
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}

.page-products .exp-doc-tag {
  margin: 0 0 8px;
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--ink-faint);
}

.page-products .exp-doc h3 {
  margin: 0 0 8px;
  font-size: 17px;
  color: var(--ink-strong);
}

.page-products .exp-doc p {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.page-products .exp-doc-meta {
  margin: 0;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
  font-size: 12px;
  color: var(--cyan-deep);
}

/* ============ 版本列表 ============ */
.page-products .exp-versions-wrap {
  border: 1px solid var(--line-dark);
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, .04);
  padding: 8px;
}

.page-products .exp-versions {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}

.page-products .exp-version {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 12px 12px;
  border-radius: var(--r-sm);
  border: 1px solid transparent;
  transition: background-color .2s ease, border-color .2s ease;
}

.page-products .exp-version:hover {
  background: rgba(0, 229, 255, .07);
  border-color: var(--line-cyan);
}

.page-products .exp-version--current {
  background: rgba(0, 196, 140, .10);
  border-color: rgba(0, 196, 140, .3);
}

.page-products .exp-version-no {
  font-size: 14px;
  color: var(--white);
}

.page-products .exp-version-note {
  font-size: 13px;
  color: var(--on-dark-soft);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.page-products .exp-version--more {
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  padding: 14px 12px 8px;
  border-top: 1px dashed var(--line-dark);
  margin-top: 6px;
  font-size: 13px;
  color: var(--on-dark-soft);
}

.page-products .exp-version--more a {
  color: var(--cyan);
  text-decoration: none;
  white-space: nowrap;
}

.page-products .exp-version--more a:hover,
.page-products .exp-version--more a:focus-visible {
  text-decoration: underline;
}

/* ============ 可展开组 ============ */
.page-products .exp-compat {
  margin-top: clamp(22px, 3vw, 32px);
  display: grid;
  gap: 10px;
}

.page-products .exp-fold {
  border: 1px solid var(--line-dark);
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, .04);
  overflow: hidden;
}

.page-products .exp-fold summary {
  cursor: pointer;
  padding: 15px 18px;
  font-size: 15px;
  font-weight: 600;
  color: var(--on-dark);
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  transition: color .2s ease, background-color .2s ease;
}

.page-products .exp-fold summary::-webkit-details-marker {
  display: none;
}

.page-products .exp-fold summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--cyan);
  transition: transform .25s ease;
}

.page-products .exp-fold[open] summary::after {
  transform: rotate(45deg);
}

.page-products .exp-fold summary:hover {
  background: rgba(0, 229, 255, .07);
}

.page-products .exp-fold[open] summary {
  color: var(--cyan);
}

.page-products .exp-fold-body {
  padding: 0 18px 16px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--on-dark-soft);
}

.page-products .exp-fold-body p {
  margin: 0;
}

/* ============ 移动端状态 ============ */
.page-products .exp-mobile-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.page-products .exp-fact {
  padding: 16px 16px 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: linear-gradient(160deg, rgba(0, 229, 255, .07), transparent 70%);
}

.page-products .exp-fact-num {
  margin: 0 0 6px;
  font-size: 22px;
  line-height: 1.1;
  color: var(--navy);
  letter-spacing: -.01em;
}

.page-products .exp-fact:nth-child(2) .exp-fact-num { color: var(--cyan-deep); }
.page-products .exp-fact:nth-child(3) .exp-fact-num { color: var(--gold); }
.page-products .exp-fact:nth-child(4) .exp-fact-num { color: var(--magenta); }

.page-products .exp-fact-label {
  margin: 0;
  font-size: 13px;
  color: var(--ink-soft);
}

.page-products .exp-mobile-note {
  grid-column: 1 / -1;
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.page-products .exp-mobile-note a {
  color: var(--cyan-deep);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 144, 166, .35);
}

.page-products .exp-mobile-note a:hover,
.page-products .exp-mobile-note a:focus-visible {
  border-bottom-color: var(--cyan-deep);
}

/* ============ 批次编号 ============ */
.page-products .exp-code {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 10px;
  margin-bottom: clamp(22px, 3vw, 32px);
  padding: 16px;
  border: 1px dashed var(--line-strong);
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, .6);
}

.page-products .exp-code-seg {
  flex: 1 1 140px;
  min-width: 0;
  padding: 12px 14px;
  border-radius: var(--r-sm);
  background: var(--navy);
  color: var(--on-dark);
}

.page-products .exp-code-seg--gold {
  background: var(--gold);
  color: var(--navy);
}

.page-products .exp-code-label {
  display: block;
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  opacity: .75;
  margin-bottom: 6px;
}

.page-products .exp-code-val {
  display: block;
  font-size: 21px;
  letter-spacing: .06em;
  line-height: 1.2;
}

.page-products .exp-code-len {
  display: block;
  margin-top: 4px;
  font-size: 11px;
  opacity: .7;
}

.page-products .exp-code-op {
  align-self: center;
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--ink-faint);
}

.page-products .exp-compat-list h3 {
  margin: 0 0 14px;
  font-size: 17px;
  color: var(--ink-strong);
}

.page-products .exp-compat-list ul {
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-products .exp-compat-list li {
  position: relative;
  padding-left: 22px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.page-products .exp-compat-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 9px;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--cyan);
}

.page-products .exp-compat-list strong {
  color: var(--ink-strong);
}

.page-products .exp-compat-note {
  margin: 0;
  padding: 14px 16px;
  border-left: 3px solid var(--gold);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: rgba(255, 184, 0, .12);
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* ============ 结尾引导 ============ */
.page-products .exp-cta {
  border-radius: var(--r-lg);
  padding: clamp(24px, 3.6vw, 42px);
  color: var(--on-dark);
  background:
    radial-gradient(520px 260px at 88% 120%, rgba(255, 184, 0, .2), transparent 66%),
    linear-gradient(140deg, var(--navy-3) 0%, var(--navy) 100%);
  border: 1px solid var(--line-dark);
}

.page-products .exp-cta-inner {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr;
  align-items: center;
}

.page-products .exp-cta h2 {
  margin: 0 0 10px;
  font-size: clamp(21px, 2.4vw, 28px);
  line-height: 1.3;
  color: var(--white);
}

.page-products .exp-cta p {
  margin: 0;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--on-dark-soft);
}

.page-products .exp-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ============ 响应式 ============ */
@media (min-width: 700px) {
  .page-products .exp-docs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-products .exp-cta-inner {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  }

  .page-products .exp-cta-actions {
    justify-content: flex-end;
  }
}

@media (min-width: 820px) {
  .page-products .exp-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .page-products .exp-split--reverse > .exp-figure {
    order: 2;
  }
}

@media (min-width: 900px) {
  .page-products .exp-hero-grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
  }
}

@media (min-width: 1024px) {
  .page-products .exp-layout {
    grid-template-columns: var(--exp-rail-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-products .exp-rail {
    position: sticky;
    top: calc(var(--header-h) + 22px);
  }

  .page-products .exp-rail-list {
    flex-direction: column;
    gap: 4px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-products .exp-rail-list li {
    flex: 1 1 auto;
  }

  .page-products .exp-rail-list a {
    width: 100%;
    border-color: transparent;
    background: transparent;
    white-space: normal;
  }

  .page-products .exp-rail-list a:hover,
  .page-products .exp-rail-list a:focus-visible {
    border-color: var(--line-cyan);
    background: rgba(0, 229, 255, .09);
  }
}

@media (max-width: 480px) {
  .page-products .exp-status-list li {
    grid-template-columns: 14px 1fr;
    row-gap: 4px;
  }

  .page-products .exp-status-val {
    grid-column: 2;
  }

  .page-products .exp-version {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .page-products .exp-version-note {
    grid-column: 1;
    white-space: normal;
  }

  .page-products .exp-code {
    padding: 12px;
  }

  .page-products .exp-code-op {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .exp-steps li,
  .page-products .exp-doc {
    transition: none;
  }

  .page-products .exp-steps li:hover,
  .page-products .exp-doc:hover {
    transform: none;
  }
}