.page-products {
  --app-rail-w: 264px;
  --app-gap: clamp(1.5rem, 4vw, 3rem);
  --app-line: #22304A;
  --app-cell: #121C30;
  --app-cell-hover: #16223A;
  --app-cyan-line: rgba(33, 212, 194, .38);
  background: var(--blue-night);
  color: var(--on-night);
  overflow-x: clip;
}

.page-products .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -.01em;
}

.page-products .eyebrow {
  margin: 0 0 .5rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  line-height: 1.5;
  color: var(--flag-blue);
}

/* ---------- 面包屑 ---------- */
.page-products .breadcrumb {
  padding-block: 1.125rem .5rem;
}

.page-products .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0 1.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .05em;
  color: var(--on-night-soft);
}

.page-products .breadcrumb-list li {
  position: relative;
}

.page-products .breadcrumb-list li + li::before {
  content: "/";
  position: absolute;
  left: -1rem;
  color: var(--line);
}

.page-products .breadcrumb-list a {
  color: var(--on-night-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .15s var(--ease), border-color .15s var(--ease);
}

.page-products .breadcrumb-list a:hover,
.page-products .breadcrumb-list a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--app-cyan-line);
}

.page-products .breadcrumb-list [aria-current="page"] {
  color: var(--white);
  border-bottom-color: var(--flag-yellow);
}

/* ---------- 首屏 ---------- */
.page-products .app-hero {
  position: relative;
  padding-block: clamp(2rem, 5vw, 3.25rem) clamp(2.25rem, 6vw, 4rem);
  background:
    radial-gradient(880px 460px at 84% -12%, rgba(46, 155, 230, .16), transparent 68%),
    linear-gradient(180deg, var(--blue-night) 0%, #0C1526 58%, var(--blue-night) 100%);
  border-bottom: 1px solid var(--line);
  isolation: isolate;
}

.page-products .app-hero::before {
  content: "";
  position: absolute;
  right: -8%;
  top: -14%;
  width: min(58%, 720px);
  height: 128%;
  background: linear-gradient(158deg, rgba(46, 155, 230, .12), rgba(33, 212, 194, .05) 52%, transparent 78%);
  clip-path: polygon(30% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
  z-index: -1;
}

.page-products .app-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--app-gap);
  align-items: start;
}

.page-products .app-hero-copy h1 {
  margin: .35rem 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.875rem, 5.4vw, 3.375rem);
  line-height: 1.15;
  letter-spacing: -.02em;
  color: var(--white);
  max-width: 17ch;
}

.page-products .app-hero-copy .lede {
  margin: 1.25rem 0 0;
  max-width: 54ch;
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--on-night);
}

.page-products .app-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-top: 1.75rem;
}

.page-products .app-kv {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: clamp(1.75rem, 4vw, 2.5rem) 0 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-products .app-kv li {
  background: var(--blue-night);
  padding: .875rem 1rem;
}

.page-products .kv-key {
  display: block;
  margin-bottom: .35rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .14em;
  color: var(--on-night-soft);
}

.page-products .kv-line {
  display: block;
  font-size: .9375rem;
  color: var(--on-night);
}

.page-products .kv-line .num {
  font-size: 1.25rem;
}

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

.page-products .app-hero-figure .figure-media {
  aspect-ratio: 1400 / 860;
}

/* ---------- 主体框架 ---------- */
.page-products .app-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--app-gap);
  padding-block: clamp(2rem, 5vw, 3.5rem) clamp(3rem, 7vw, 5rem);
}

.page-products .app-main {
  min-width: 0;
}

.page-products .app-rail {
  min-width: 0;
}

.page-products .rail-card {
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 1.125rem 1.125rem 1.25rem;
}

.page-products .rail-title {
  margin: 0 0 .875rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .18em;
  color: var(--on-night-soft);
}

.page-products .rail-nav {
  display: grid;
  gap: 2px;
}

.page-products .rail-link {
  display: flex;
  align-items: baseline;
  gap: .625rem;
  padding: .5rem .625rem;
  font-size: .875rem;
  color: var(--on-night);
  text-decoration: none;
  border-left: 2px solid transparent;
  border-radius: 0;
  transition: background .16s var(--ease), border-color .16s var(--ease), color .16s var(--ease);
}

.page-products .rail-idx {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .08em;
  color: var(--on-night-soft);
}

.page-products .rail-link:hover,
.page-products .rail-link:focus-visible {
  background: var(--app-cell-hover);
  color: var(--white);
}

.page-products .rail-link.is-current {
  border-left-color: var(--flag-yellow);
  background: var(--app-cell-hover);
  color: var(--white);
}

.page-products .rail-link.is-current .rail-idx {
  color: var(--flag-yellow);
}

.page-products .rail-note {
  margin: 1rem 0 0;
  padding-top: .875rem;
  border-top: 1px solid var(--line);
  font-size: .8125rem;
  line-height: 1.75;
  color: var(--on-night-soft);
}

.page-products .rail-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--app-cyan-line);
}

.page-products .rail-note a:hover,
.page-products .rail-note a:focus-visible {
  color: var(--white);
}

/* ---------- 区块 ---------- */
.page-products .app-block {
  padding-block: clamp(2rem, 5vw, 3rem);
  border-top: 1px solid var(--line);
}

.page-products .app-main > .app-block:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-products .section-head {
  max-width: 64ch;
}

.page-products .section-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 3.4vw, 2.25rem);
  line-height: 1.2;
  letter-spacing: -.02em;
  color: var(--white);
}

.page-products .section-head .lede {
  margin: .875rem 0 0;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--on-night-soft);
}

/* ---------- 图片 ---------- */
.page-products .figure {
  margin: clamp(1.5rem, 4vw, 2.25rem) 0 0;
}

.page-products .figure-media {
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--panel);
}

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

.page-products .figure--paper {
  background: var(--paper);
  border: 1px solid var(--paper-line);
  border-left: 3px solid var(--flag-blue);
  padding: .875rem .875rem 1rem;
}

.page-products .figure--paper .figure-media {
  border-color: var(--paper-line);
  background: #E4EAF2;
}

.page-products .figure-cap {
  margin: .75rem 0 0;
  font-family: var(--font-mono);
  font-size: .75rem;
  line-height: 1.7;
  letter-spacing: .03em;
  color: var(--on-night-soft);
}

.page-products .figure--paper .figure-cap {
  color: var(--ink-soft);
}

/* ---------- 工具关系 ---------- */
.page-products .tool-map {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: clamp(1.5rem, 4vw, 2.25rem);
  background: var(--line);
  border: 1px solid var(--line);
}

.page-products .tool-node {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: .625rem;
  background: var(--app-cell);
  padding: 1.5rem 1.25rem 1.375rem;
  transition: background .18s var(--ease);
}

.page-products .tool-node::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 34px;
  height: 2px;
  background: var(--cyan);
}

.page-products .tool-node--focus::before {
  width: 58px;
  background: var(--flag-yellow);
}

.page-products .tool-node:hover {
  background: var(--app-cell-hover);
}

.page-products .tool-idx {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .2em;
  color: var(--on-night-soft);
}

.page-products .tool-name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-products .tool-desc {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--on-night);
}

.page-products .tool-cta {
  align-self: flex-start;
  margin-top: auto;
  padding-bottom: 2px;
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .04em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--app-cyan-line);
  transition: color .15s var(--ease), border-color .15s var(--ease);
}

.page-products .tool-cta:hover,
.page-products .tool-cta:focus-visible {
  color: var(--white);
  border-bottom-color: var(--flag-yellow);
}

/* ---------- 三步操作 ---------- */
.page-products .steps {
  margin: clamp(1.75rem, 4vw, 2.5rem) 0 0;
  padding: 0;
  list-style: none;
}

.page-products .step {
  position: relative;
  margin-left: .75rem;
  padding: 0 0 1.875rem 2rem;
  border-left: 1px solid var(--line);
}

.page-products .step:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-products .step-idx {
  position: absolute;
  top: 0;
  left: -.75rem;
  display: grid;
  place-items: center;
  width: 1.5rem;
  height: 1.5rem;
  margin: 0;
  background: var(--blue-night);
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .02em;
  color: var(--flag-yellow);
}

.page-products .step-title {
  margin: 0 0 .5rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.125rem;
  line-height: 1.4;
  color: var(--white);
}

.page-products .step-desc {
  margin: 0;
  max-width: 58ch;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--on-night);
}

.page-products .step-note {
  display: inline-block;
  margin: .875rem 0 0;
  padding: .3rem .625rem;
  background: var(--panel);
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .08em;
  color: var(--on-night-soft);
}

/* ---------- 确认入口 ---------- */
.page-products .entry-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.5rem, 4vw, 2.5rem);
  margin-top: clamp(1.5rem, 4vw, 2.25rem);
  align-items: start;
}

.page-products .entry-list {
  display: grid;
  gap: .625rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .entry-list li {
  position: relative;
  background: var(--app-cell);
  border: 1px solid var(--line);
  padding: 1rem 1.25rem 1.125rem;
}

.page-products .entry-list li::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 3px;
  background: var(--flag-green);
}

.page-products .entry-list li:nth-child(2)::after {
  background: var(--flag-blue);
}

.page-products .entry-idx {
  margin: 0 0 .4rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .16em;
  color: var(--flag-yellow);
}

.page-products .entry-list li p:last-child {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--on-night);
}

.page-products .entry-what {
  margin: 1.25rem 0 0;
  max-width: 58ch;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--on-night);
}

.page-products .entry-what a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--app-cyan-line);
}

.page-products .entry-what a:hover,
.page-products .entry-what a:focus-visible {
  color: var(--white);
  border-bottom-color: var(--flag-yellow);
}

/* ---------- 状态标签 ---------- */
.page-products .tag-legend {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: clamp(1.5rem, 4vw, 2rem) 0 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-products .tag-legend .tag-row {
  display: grid;
  grid-template-columns: minmax(0, auto) minmax(0, 1fr);
  gap: .5rem 1.25rem;
  align-items: center;
  background: var(--app-cell);
  padding: 1rem 1.125rem;
}

.page-products .tag-legend .tag-row p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--on-night);
}

/* ---------- 弱网与三端 ---------- */
.page-products .point-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: clamp(1.5rem, 4vw, 2.25rem);
  background: var(--line);
  border: 1px solid var(--line);
}

.page-products .point {
  background: var(--app-cell);
  padding: 1.25rem 1.125rem 1.5rem;
}

.page-products .point-title {
  margin: 0 0 .625rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.0625rem;
  line-height: 1.4;
  color: var(--white);
}

.page-products .point-desc {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--on-night);
}

/* ---------- 版本日志 ---------- */
.page-products .log-list {
  margin-top: clamp(1.5rem, 4vw, 2.25rem);
  border: 1px solid var(--line);
  background: var(--panel);
}

.page-products .log-item {
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}

.page-products .log-item:last-child {
  border-bottom: 0;
}

.page-products .log-summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .5rem 1rem;
  padding: 1rem 1.125rem;
  cursor: pointer;
  list-style: none;
  transition: background .16s var(--ease);
}

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

.page-products .log-summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1rem;
  line-height: 1;
  color: var(--cyan);
}

.page-products .log-item[open] .log-summary::after {
  content: "–";
}

.page-products .log-summary:hover {
  background: var(--app-cell-hover);
}

.page-products .log-summary:focus-visible {
  outline: 1px solid var(--cyan);
  outline-offset: -3px;
}

.page-products .log-season {
  padding: .2rem .55rem;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .12em;
  color: var(--flag-yellow);
}

.page-products .log-title {
  font-size: .9375rem;
  font-weight: 700;
  line-height: 1.6;
  color: var(--white);
}

.page-products .log-body {
  margin: 0;
  padding: 0 1.125rem 1.25rem;
  list-style: none;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--on-night);
}

.page-products .log-body li {
  position: relative;
  margin-top: .5rem;
  padding-left: 1.125rem;
}

.page-products .log-body li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: 6px;
  height: 1px;
  background: var(--cyan);
}

.page-products .block-outro {
  margin: clamp(1.5rem, 4vw, 2rem) 0 0;
  max-width: 62ch;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--on-night-soft);
}

.page-products .block-outro a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--app-cyan-line);
}

.page-products .block-outro a:hover,
.page-products .block-outro a:focus-visible {
  color: var(--white);
  border-bottom-color: var(--flag-yellow);
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-products .app-kv {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-products .tool-map {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-products .entry-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 420px);
  }
}

@media (min-width: 980px) {
  .page-products .app-hero-grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
    gap: clamp(1.75rem, 4vw, 3.5rem);
  }
}

@media (min-width: 1080px) {
  .page-products .app-layout {
    grid-template-columns: minmax(0, 1fr) var(--app-rail-w);
    gap: clamp(2rem, 4vw, 3.5rem);
    align-items: start;
  }

  .page-products .app-main {
    order: 1;
  }

  .page-products .app-rail {
    order: 2;
    position: sticky;
    top: 5.75rem;
  }
}

@media (max-width: 420px) {
  .page-products .tag-legend .tag-row {
    grid-template-columns: minmax(0, 1fr);
    gap: .5rem;
  }

  .page-products .log-summary {
    gap: .5rem;
  }

  .page-products .log-summary::after {
    margin-left: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products *,
  .page-products *::before,
  .page-products *::after {
    transition-duration: .001ms !important;
    animation-duration: .001ms !important;
  }
}