.page-products {
  --pp-section-pad: 3.5rem 0;
  --pp-slash: linear-gradient(123deg, var(--ak-red) 0%, var(--ak-red) 26%, transparent 26.5%);
  min-width: 0;
}

/* ==================== Hero ==================== */
.page-products__hero {
  position: relative;
  overflow: hidden;
  padding: 7.5rem 0 3.25rem;
  background:
    radial-gradient(circle at 85% 22%, rgba(0, 245, 212, 0.18), transparent 30%),
    var(--pp-slash),
    var(--ak-black);
  border-bottom: 3px solid var(--ak-red);
}
.page-products__hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: linear-gradient(90deg, var(--ak-cyan) 0%, transparent 55%);
}
.page-products__hero-inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}
.page-products__hero-copy .ak-breadcrumbs a {
  color: rgba(255, 255, 255, 0.72);
  border-color: rgba(255, 255, 255, 0.35);
}
.page-products__hero-copy .ak-breadcrumbs span[aria-current="page"] {
  color: var(--ak-cyan);
}
.page-products__hero-eyebrow {
  margin: 1.5rem 0 0.6rem;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.55);
}
.page-products__hero h1 {
  font-family: var(--ak-font-heading);
  font-size: clamp(2.4rem, 7vw, 4rem);
  line-height: 1;
  letter-spacing: 0.01em;
  margin: 0 0 1.1rem;
  color: var(--ak-white);
  text-transform: uppercase;
}
.page-products__h1-accent {
  display: block;
  color: var(--ak-red);
  font-style: italic;
  letter-spacing: 0.06em;
}
.page-products__hero-lead {
  max-width: 34rem;
  margin: 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: 1rem;
  line-height: 1.8;
}
.page-products__hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}
.page-products__hero-actions .ak-btn--large {
  min-width: 10.5rem;
}
.page-products__version-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-top: 1.5rem;
  padding: 0.55rem 1.1rem;
  border: 1px solid rgba(0, 245, 212, 0.45);
  border-radius: var(--ak-radius-pill);
  color: var(--ak-cyan);
  background: rgba(0, 245, 212, 0.07);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}
.page-products__pill-icon {
  width: 1rem;
  height: 1rem;
  flex: 0 0 auto;
}
.page-products__hero-mark {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.page-products__hero-num {
  font-family: var(--ak-font-heading);
  font-size: clamp(4.6rem, 20vw, 10rem);
  line-height: 0.85;
  letter-spacing: 0.01em;
  color: var(--ak-red);
  opacity: 0.95;
  text-shadow: 0 0 30px rgba(230, 57, 70, 0.5);
}
.page-products__hero-num-label {
  margin-top: 0.4rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.34em;
  color: var(--ak-cyan);
}

/* ==================== 版本3.2.1 ==================== */
.page-products__version {
  padding: var(--pp-section-pad);
  background:
    linear-gradient(90deg, rgba(230, 57, 70, 0.05) 0%, transparent 28%),
    var(--ak-light);
  color: var(--ak-black);
}
.page-products__version-grid {
  display: grid;
  gap: 2rem;
}
.page-products__version-grid > * {
  min-width: 0;
}
.page-products__version-media {
  position: relative;
  aspect-ratio: 3 / 4;
  max-height: 36rem;
  overflow: hidden;
  border-radius: var(--ak-radius-lg);
  border: 1px solid rgba(230, 57, 70, 0.4);
  box-shadow: 0 22px 44px rgba(0, 0, 0, 0.14);
}
.page-products__version-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.page-products__version-copy {
  align-self: center;
}
.page-products__version .ak-tag {
  color: var(--ak-red);
  border: 1px solid currentColor;
  background: transparent;
}
.page-products__version-copy h2 {
  font-family: var(--ak-font-heading);
  font-size: clamp(2.2rem, 5vw, 3rem);
  line-height: 1;
  text-transform: uppercase;
  margin: 0.85rem 0 1rem;
  color: var(--ak-black);
}
.page-products__version-lead {
  margin: 0 0 1.3rem;
  padding: 0.9rem 1rem;
  border-left: 4px solid var(--ak-cyan-deep);
  background: rgba(0, 201, 167, 0.08);
  color: #414147;
  line-height: 1.8;
}
.page-products__version-list {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
  counter-reset: pp-vlist;
}
.page-products__version-list li {
  counter-increment: pp-vlist;
  position: relative;
  padding: 0.85rem 0 0.85rem 2.5rem;
  border-bottom: 1px solid rgba(0, 0, 0, 0.09);
  color: #3a3a40;
  line-height: 1.65;
}
.page-products__version-list li::before {
  content: counter(pp-vlist, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.78rem;
  font-family: var(--ak-font-heading);
  font-size: 1.05rem;
  color: var(--ak-red);
}
.page-products__version-list strong {
  font-weight: 700;
  color: var(--ak-black);
}
.page-products__version-copy .ak-btn--ghost {
  color: var(--ak-black);
  border-color: var(--ak-black);
}
.page-products__version-copy .ak-btn--ghost:hover {
  background: var(--ak-black);
  color: var(--ak-light);
}

/* ==================== 核心功能 ==================== */
.page-products__features {
  padding: var(--pp-section-pad);
  background:
    linear-gradient(140deg, rgba(230, 57, 70, 0.12), transparent 36%),
    var(--ak-black);
  color: var(--ak-light);
}
.page-products__section-head {
  margin-bottom: 2rem;
}
.page-products__section-head .ak-tag--red {
  color: var(--ak-red-bright);
  border-color: rgba(255, 107, 107, 0.6);
}
.page-products__section-head h2 {
  font-family: var(--ak-font-heading);
  font-size: clamp(1.9rem, 5vw, 2.7rem);
  line-height: 1.08;
  text-transform: uppercase;
  margin: 0.75rem 0;
  color: var(--ak-white);
}
.page-products__section-head p {
  max-width: 42rem;
  margin: 0;
  color: rgba(255, 255, 255, 0.66);
  line-height: 1.75;
}
.page-products__feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}
.page-products__feature-grid > * {
  min-width: 0;
}
.page-products__feature-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--ak-graphite);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--ak-radius);
  overflow: hidden;
  transition: transform 0.3s var(--ak-ease), border-color 0.3s ease, box-shadow 0.3s ease;
}
.page-products__feature-card::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--ak-cyan);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.25s var(--ak-ease);
}
.page-products__feature-card:hover {
  transform: translateY(-6px);
  border-color: rgba(230, 57, 70, 0.65);
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.4);
}
.page-products__feature-card:hover::after {
  transform: scaleY(1);
}
.page-products__feature-media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--ak-graphite);
}
.page-products__feature-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s var(--ak-ease);
}
.page-products__feature-card:hover .page-products__feature-media img {
  transform: scale(1.05);
}
.page-products__feature-media--icon {
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: auto;
  min-height: 8rem;
  padding: 1.4rem;
  background:
    radial-gradient(circle at 50% 50%, rgba(0, 245, 212, 0.12), transparent 70%),
    var(--ak-graphite);
}
.page-products__feature-media--icon img {
  width: 5rem;
  height: 5rem;
  object-fit: contain;
}
.page-products__feature-svg {
  width: 3.4rem;
  height: 3.4rem;
  color: var(--ak-cyan);
}
.page-products__feature-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 1.2rem 1.25rem 1.4rem;
}
.page-products__feature-body h3 {
  font-family: var(--ak-font-heading);
  font-size: 1.15rem;
  line-height: 1.15;
  letter-spacing: 0.045em;
  text-transform: uppercase;
  margin: 0 0 0.5rem;
  color: var(--ak-white);
}
.page-products__feature-body p {
  margin: 0;
  color: rgba(255, 255, 255, 0.62);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* ==================== 立即下载 ==================== */
.page-products__download {
  position: relative;
  padding: var(--pp-section-pad);
  background:
    linear-gradient(180deg, rgba(230, 57, 70, 0.18), transparent 40%),
    repeating-linear-gradient(45deg, rgba(230, 57, 70, 0.18) 0, rgba(230, 57, 70, 0.18) 2px, transparent 2px, transparent 18px),
    linear-gradient(180deg, rgba(11, 11, 13, 0.88), rgba(11, 11, 13, 0.94)),
    var(--ak-black);
  border-top: 3px solid var(--ak-red);
  border-bottom: 3px solid var(--ak-red);
  color: var(--ak-light);
}
.page-products__download-inner {
  display: grid;
  gap: 2rem;
}
.page-products__download-inner > * {
  min-width: 0;
}
.page-products__download-qr {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1.75rem 1.5rem;
  border: 1px dashed rgba(0, 245, 212, 0.4);
  border-radius: var(--ak-radius-lg);
  background: rgba(255, 255, 255, 0.045);
}
.page-products__download-qr img {
  display: block;
  width: min(12rem, 70%);
  height: auto;
  filter: invert(1) contrast(1.08) brightness(0.94);
}
.page-products__download-qr-label {
  margin-top: 1rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: rgba(255, 255, 255, 0.58);
}
.page-products__download-content {
  align-self: center;
}
.page-products__download-content .ak-tag {
  color: var(--ak-cyan);
  border-color: rgba(0, 245, 212, 0.6);
}
.page-products__download-content h2 {
  font-family: var(--ak-font-heading);
  font-size: clamp(2.1rem, 5.5vw, 3rem);
  line-height: 1;
  text-transform: uppercase;
  margin: 0.85rem 0 0.9rem;
  color: var(--ak-white);
}
.page-products__download-content > p {
  max-width: 40rem;
  margin: 0;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.8;
}
.page-products__download-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin: 1.5rem 0 0.65rem;
}
.page-products__download-actions .ak-btn {
  min-width: 9.5rem;
  padding: 0.85rem 1.5rem;
  font-weight: 700;
  background: var(--ak-red);
  color: var(--ak-white);
  border: 2px solid var(--ak-red);
  border-radius: var(--ak-radius);
  box-shadow: 0 0 16px rgba(230, 57, 70, 0.5);
  transition: box-shadow 0.3s ease, transform 0.25s var(--ak-ease), background 0.2s ease, border-color 0.2s ease;
}
.page-products__download-actions .ak-btn:hover,
.page-products__download-actions .ak-btn:focus {
  background: var(--ak-red-bright);
  border-color: var(--ak-red-bright);
  box-shadow: 0 0 26px rgba(255, 107, 107, 0.75);
  transform: translateY(-3px);
}
.page-products__download-actions .ak-btn:last-child {
  background: transparent;
  border-color: var(--ak-cyan);
  color: var(--ak-cyan);
  box-shadow: none;
}
.page-products__download-actions .ak-btn:last-child:hover,
.page-products__download-actions .ak-btn:last-child:focus {
  background: rgba(0, 245, 212, 0.1);
  border-color: var(--ak-cyan);
  color: var(--ak-cyan);
  box-shadow: 0 0 20px rgba(0, 245, 212, 0.3);
  transform: translateY(-3px);
}
.page-products__download-note {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.5);
}
.page-products__install-guide {
  margin-top: 1.5rem;
  padding: 1.25rem 1.35rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-left: 4px solid var(--ak-cyan);
  border-radius: var(--ak-radius);
  background: rgba(0, 245, 212, 0.05);
}
.page-products__install-guide h3 {
  margin: 0 0 0.7rem;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ak-cyan);
}
.page-products__install-guide ol {
  margin: 0;
  padding-left: 1.15rem;
  display: grid;
  gap: 0.4rem;
}
.page-products__install-guide li {
  color: rgba(255, 255, 255, 0.76);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* ==================== 系统兼容 ==================== */
.page-products__compat {
  padding: var(--pp-section-pad);
  background:
    linear-gradient(120deg, rgba(0, 201, 167, 0.07), transparent 46%),
    var(--ak-light);
  color: var(--ak-black);
}
.page-products__section-head--light h2 {
  color: var(--ak-black);
}
.page-products__section-head--light p {
  color: #4a4a50;
}
.page-products__compat .ak-tag {
  color: var(--ak-red);
  border: 1px solid currentColor;
  background: transparent;
}
.page-products__compat-grid {
  display: grid;
  gap: 1rem;
}
.page-products__compat-grid > * {
  min-width: 0;
}
.page-products__compat-card {
  position: relative;
  overflow: hidden;
  padding: 1.55rem 1.4rem 1.8rem;
  background: var(--ak-white);
  border: 1px solid rgba(0, 0, 0, 0.1);
  border-radius: var(--ak-radius);
  transition: transform 0.3s var(--ak-ease), box-shadow 0.3s ease;
}
.page-products__compat-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--ak-red), var(--ak-cyan-deep));
}
.page-products__compat-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 34px rgba(0, 0, 0, 0.12);
}
.page-products__compat-num {
  font-family: var(--ak-font-heading);
  font-size: 2.6rem;
  line-height: 1;
  color: rgba(230, 57, 70, 0.24);
}
.page-products__compat-card h3 {
  font-family: var(--ak-font-heading);
  font-size: 1.1rem;
  line-height: 1.2;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin: 0.7rem 0 0.55rem;
  color: var(--ak-black);
}
.page-products__compat-card p {
  margin: 0;
  color: #55555c;
  font-size: 0.88rem;
  line-height: 1.75;
}
.page-products__compat-tip {
  margin: 1.6rem 0 0;
  text-align: center;
  font-size: 0.84rem;
  color: #6b6b72;
}

/* ==================== 更新历史 ==================== */
.page-products__history {
  padding: var(--pp-section-pad);
  background:
    radial-gradient(circle at 12% 8%, rgba(230, 57, 70, 0.12), transparent 26%),
    var(--ak-black);
  color: var(--ak-light);
}
.page-products__history .page-products__section-head .ak-tag--red {
  color: var(--ak-red-bright);
  border-color: rgba(255, 107, 107, 0.55);
}
.page-products__timeline {
  position: relative;
  margin-top: 1.75rem;
  padding-left: 1.5rem;
}
.page-products__timeline::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5rem;
  bottom: 0.75rem;
  width: 3px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--ak-red), var(--ak-cyan));
}
.page-products__timeline-item {
  position: relative;
  display: grid;
  gap: 0.65rem;
  padding-bottom: 1.8rem;
}
.page-products__timeline-item:last-child {
  padding-bottom: 0;
}
.page-products__timeline-item::before {
  content: "";
  position: absolute;
  left: calc(-1.5rem - 4px);
  top: 0.35rem;
  width: 0.8rem;
  height: 0.8rem;
  border-radius: 50%;
  background: var(--ak-red);
  border: 3px solid var(--ak-black);
  box-shadow: 0 0 0 2px rgba(230, 57, 70, 0.4);
}
.page-products__timeline-version {
  font-family: var(--ak-font-heading);
  font-size: 1.5rem;
  line-height: 1;
  color: var(--ak-red);
}
.page-products__timeline-body h3 {
  font-family: var(--ak-font-heading);
  font-size: 1.05rem;
  line-height: 1.2;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin: 0.15rem 0 0.3rem;
  color: var(--ak-white);
}
.page-products__timeline-meta {
  margin: 0 0 0.55rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--ak-cyan);
}
.page-products__timeline-body ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.35rem;
}
.page-products__timeline-body li {
  position: relative;
  padding-left: 1rem;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
  line-height: 1.65;
}
.page-products__timeline-body li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 0.36rem;
  height: 0.36rem;
  background: var(--ak-cyan);
  transform: rotate(45deg);
}

/* ==================== 底部引导 ==================== */
.page-products__links {
  padding: 2.5rem 0;
  background:
    linear-gradient(105deg, rgba(230, 57, 70, 0.14), transparent 50%),
    var(--ak-graphite);
  color: var(--ak-light);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.page-products__links-inner {
  display: flex;
  flex-wrap: wrap;
  flex-direction: column;
  align-items: flex-start;
  gap: 1.25rem;
}
.page-products__links-copy h2 {
  font-family: var(--ak-font-heading);
  font-size: 1.45rem;
  line-height: 1.1;
  text-transform: uppercase;
  margin: 0 0 0.35rem;
  color: var(--ak-white);
}
.page-products__links-copy p {
  margin: 0;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9rem;
}
.page-products__links-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}
.page-products__links-nav .ak-btn--ghost {
  color: var(--ak-cyan);
  border-color: rgba(0, 245, 212, 0.6);
}
.page-products__links-nav .ak-btn--ghost:hover {
  background: rgba(0, 245, 212, 0.1);
}

/* ==================== 响应式 ==================== */
@media (min-width: 720px) {
  .page-products__download-actions .ak-btn {
    min-width: 10.5rem;
  }
  .page-products__feature-grid {
    grid-template-columns: 1fr 1fr;
  }
  .page-products__links-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

@media (min-width: 900px) {
  .page-products__hero-inner {
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
  }
  .page-products__hero-copy {
    flex: 1 1 56%;
  }
  .page-products__hero-mark {
    flex: 0 0 40%;
    align-items: flex-end;
    text-align: right;
    padding-bottom: 0.25rem;
  }
  .page-products__version-grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: 2.75rem;
    align-items: center;
  }
  .page-products__download-inner {
    grid-template-columns: minmax(0, 0.7fr) minmax(0, 1.3fr);
    align-items: center;
    gap: 2.75rem;
  }
  .page-products__compat-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-products__timeline-item {
    grid-template-columns: 7rem 1fr;
  }
}

@media (min-width: 1080px) {
  .page-products__feature-grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    grid-template-areas:
      "push report"
      "transfer chart";
  }
  .page-products__feature-card--push {
    grid-area: push;
  }
  .page-products__feature-card--report {
    grid-area: report;
  }
  .page-products__feature-card--transfer {
    grid-area: transfer;
  }
  .page-products__feature-card--chart {
    grid-area: chart;
  }
}