.page-products {
  background: var(--pitch);
  color: var(--paper);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
}

.page-products img {
  max-width: 100%;
  height: auto;
}

.page-products h1,
.page-products h2,
.page-products h3 {
  font-family: var(--font-display);
  color: var(--paper);
}

.page-products h1 {
  font-size: clamp(1.85rem, 4vw, 2.9rem);
  line-height: 1.14;
  margin: .5rem 0 1rem;
}

.page-products h2 {
  font-size: clamp(1.45rem, 3vw, 2.2rem);
  line-height: 1.2;
  margin: .5rem 0 .75rem;
}

.page-products h3 {
  font-size: 1.15rem;
}

.page-products .products-hero,
.page-products .products-features,
.page-products .products-download,
.page-products .products-versions,
.page-products .products-compat,
.page-products .products-help {
  padding: 2.6rem 0;
}

@media (min-width: 900px) {
  .page-products .products-hero,
  .page-products .products-features,
  .page-products .products-download,
  .page-products .products-versions,
  .page-products .products-compat,
  .page-products .products-help {
    padding: 4.5rem 0;
  }
}

.page-products .section[id] {
  scroll-margin-top: calc(var(--header-h) + 1rem);
}

.page-products .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  align-items: center;
  font-family: var(--font-data);
  font-size: .76rem;
  letter-spacing: .06em;
  color: var(--sage);
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 1.25rem clamp(1rem, 4vw, 2rem) 0;
}

.page-products .breadcrumb a {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .25s ease, color .25s ease;
}

.page-products .breadcrumb a:hover {
  border-bottom-color: var(--gold);
}

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

.page-products .chapter-label {
  display: inline-flex;
  align-items: baseline;
  gap: .5rem;
  font-family: var(--font-data);
  font-size: .8rem;
  letter-spacing: .12em;
  color: var(--gold);
  text-transform: uppercase;
}

.page-products .chapter-no {
  font-family: var(--font-data);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  color: var(--gold);
}

.page-products .section-heading {
  max-width: 760px;
  margin-bottom: 2rem;
}

.page-products .section-heading .section-desc {
  margin-top: .75rem;
  font-size: .95rem;
  color: var(--sage);
}

.page-products .button {
  transition: background-color .25s ease, border-color .25s ease, color .25s ease, transform .2s ease;
}

.page-products .button--primary:hover {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--pitch);
}

.page-products .button--wine:hover {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--pitch);
}

.page-products .button--ghost:hover {
  border-color: var(--gold);
  color: var(--gold);
}

.page-products .products-hero {
  position: relative;
  background:
    linear-gradient(135deg, rgba(29, 92, 74, .72), rgba(11, 26, 22, .96) 68%),
    repeating-linear-gradient(0deg, transparent 0 39px, rgba(242, 239, 230, .035) 40px),
    repeating-linear-gradient(90deg, transparent 0 39px, rgba(242, 239, 230, .035) 40px);
}

.page-products .hero-split {
  display: grid;
  gap: 2.5rem;
  align-items: center;
  margin-top: 1.5rem;
}

@media (min-width: 900px) {
  .page-products .hero-split {
    grid-template-columns: minmax(300px, 380px) 1fr;
    gap: 4rem;
  }

  .page-products .hero-copy {
    order: 2;
  }

  .page-products .phone-visual {
    order: 1;
  }
}

.page-products .hero-copy .lead {
  font-size: 1.05rem;
  line-height: 1.75;
  color: #c7ceca;
  max-width: 62ch;
  margin: .5rem 0 1.25rem;
}

.page-products .hero-feature-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: .55rem;
  margin: 0 0 1.75rem;
  padding: 0;
  list-style: none;
}

.page-products .hero-feature-list li {
  font-family: var(--font-data);
  font-size: .78rem;
  line-height: 1.4;
  color: var(--paper);
  background: rgba(11, 26, 22, .5);
  border: 1px solid var(--gold-line);
  border-left: 3px solid var(--gold);
  padding: .55rem .65rem;
}

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

.page-products .phone-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 1.5rem 0 .75rem;
}

.page-products .phone-frame {
  position: relative;
  width: 260px;
  height: 520px;
  background: #0b1a16;
  border: 7px solid #162520;
  border-radius: 38px;
  box-shadow:
    0 28px 70px rgba(0, 0, 0, .5),
    inset 0 0 0 2px rgba(201, 162, 39, .18),
    0 0 0 1px rgba(242, 239, 230, .08);
  overflow: hidden;
}

.page-products .phone-notch {
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 88px;
  height: 16px;
  background: #0b1a16;
  border-radius: 10px;
  z-index: 2;
}

.page-products .phone-screen {
  position: absolute;
  inset: 10px;
  border-radius: 24px;
  overflow: hidden;
  background: var(--pitch);
}

.page-products .phone-screen-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  border: 0;
}

.page-products .phone-visual::after {
  content: "APP 界面示意 / V4.2.0";
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
  font-family: var(--font-data);
  font-size: .68rem;
  letter-spacing: .12em;
  color: var(--gold);
  background: rgba(11, 26, 22, .7);
  padding: .25rem .6rem;
  border-left: 2px solid var(--gold);
}

.page-products .products-features {
  background:
    linear-gradient(135deg, rgba(11, 26, 22, .55), rgba(29, 92, 74, .8)),
    repeating-linear-gradient(45deg, transparent 0 28px, rgba(242, 239, 230, .02) 28px 30px);
}

.page-products .features-layout {
  display: grid;
  gap: 2rem;
}

@media (min-width: 900px) {
  .page-products .features-layout {
    grid-template-columns: 280px 1fr;
    align-items: start;
  }
}

.page-products .features-visual {
  position: relative;
  padding: .75rem;
  background: rgba(11, 26, 22, .4);
  border: 1px solid var(--gold-line);
  transition: box-shadow .25s ease;
}

.page-products .features-visual:hover {
  box-shadow: 0 0 0 1px var(--gold-line), 0 12px 30px rgba(0, 0, 0, .25);
}

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

.page-products .features-visual::after {
  content: "FEATURE INDEX / 功能索引";
  position: absolute;
  bottom: .5rem;
  right: .5rem;
  font-family: var(--font-data);
  font-size: .6rem;
  letter-spacing: .1em;
  color: var(--gold);
  background: rgba(11, 26, 22, .75);
  padding: .2rem .4rem;
}

.page-products .feature-tabs {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

@media (min-width: 700px) {
  .page-products .feature-tabs {
    grid-template-columns: repeat(2, 1fr);
  }
}

.page-products .feature-tab {
  margin: 0;
  padding: 1.2rem;
  background: rgba(11, 26, 22, .28);
  border: 1px solid rgba(242, 239, 230, .12);
  border-top: 3px solid var(--gold);
  transition: transform .2s ease, border-color .25s ease, background-color .25s ease;
}

.page-products .feature-tab:hover {
  transform: translateY(-2px);
  border-color: var(--gold);
  background: rgba(11, 26, 22, .5);
}

.page-products .feature-tab h3 {
  margin: .55rem 0 .35rem;
  font-size: 1.1rem;
  color: var(--paper);
  font-weight: 800;
}

.page-products .feature-tab p {
  margin: 0;
  font-size: .9rem;
  line-height: 1.6;
  color: #c7ceca;
}

.page-products .tag {
  display: inline-block;
  font-family: var(--font-data);
  font-size: .68rem;
  letter-spacing: .08em;
  color: var(--gold);
  background: rgba(201, 162, 39, .14);
  border: 1px solid var(--gold-line);
  padding: .2rem .5rem;
  text-transform: uppercase;
}

.page-products .products-download {
  background:
    radial-gradient(circle at 85% 15%, rgba(11, 26, 22, .35), transparent 50%),
    var(--teal);
}

.page-products .download-split {
  display: grid;
  gap: 2rem;
  align-items: center;
}

@media (min-width: 900px) {
  .page-products .download-split {
    grid-template-columns: 320px 1fr;
    gap: 3rem;
  }
}

.page-products .download-qr {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .8rem;
  padding: 1.25rem;
  background: var(--paper);
  border-radius: 8px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, .25);
}

.page-products .download-qr img {
  display: block;
  width: 100%;
  max-width: 260px;
  height: auto;
}

.page-products .qr-hint {
  margin: 0;
  font-family: var(--font-data);
  font-size: .72rem;
  letter-spacing: .08em;
  color: var(--pitch);
  opacity: 0;
  transform: translateY(4px);
  transition: opacity .25s ease, transform .25s ease;
  border-top: 1px solid rgba(11, 26, 22, .15);
  padding-top: .6rem;
}

.page-products .download-qr:hover .qr-hint,
.page-products .download-qr:focus-within .qr-hint {
  opacity: 1;
  transform: translateY(0);
}

.page-products .download-options {
  display: grid;
  gap: 1.1rem;
}

.page-products .download-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .8rem;
}

.page-products .channel-note {
  margin: 0;
  font-size: .86rem;
  line-height: 1.6;
  color: rgba(242, 239, 230, .85);
}

.page-products .anchor-target {
  position: relative;
  top: calc(-1 * var(--header-h));
  display: block;
  height: 1px;
  visibility: hidden;
}

.page-products .products-versions {
  background:
    radial-gradient(circle at 15% 30%, rgba(201, 162, 39, .1), transparent 36%),
    repeating-linear-gradient(0deg, transparent 0 39px, rgba(242, 239, 230, .04) 40px),
    repeating-linear-gradient(90deg, transparent 0 39px, rgba(242, 239, 230, .04) 40px),
    var(--indigo);
}

.page-products .version-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.25rem;
}

@media (min-width: 700px) {
  .page-products .version-timeline {
    position: relative;
    padding-left: 2.5rem;
  }

  .page-products .version-timeline::before {
    content: "";
    position: absolute;
    left: 10px;
    top: 8px;
    bottom: 8px;
    width: 1px;
    background: linear-gradient(180deg, var(--gold) 0%, var(--teal) 60%, var(--wine) 100%);
  }
}

.page-products .timeline-item {
  display: grid;
  gap: .45rem;
  align-items: start;
}

@media (min-width: 700px) {
  .page-products .timeline-item {
    grid-template-columns: 92px 1fr;
  }
}

.page-products .timeline-marker {
  font-family: var(--font-data);
  font-size: .7rem;
  letter-spacing: .1em;
  color: var(--gold);
  text-transform: uppercase;
  padding-top: .4rem;
  white-space: nowrap;
}

@media (min-width: 700px) {
  .page-products .timeline-marker {
    position: relative;
  }

  .page-products .timeline-marker::before {
    content: "●";
    position: absolute;
    left: -2.3rem;
    top: .55rem;
    font-size: .45rem;
    color: var(--gold);
  }
}

.page-products .version-card {
  margin: 0;
  padding: 0;
  background: rgba(11, 26, 22, .35);
  border: 1px solid rgba(242, 239, 230, .14);
  transition: border-color .25s ease, transform .2s ease;
  overflow: hidden;
}

.page-products .version-card:hover {
  border-color: var(--gold);
  transform: translateY(-1px);
}

.page-products .version-card details {
  display: block;
}

.page-products .version-card summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .5rem 1rem;
  cursor: pointer;
  list-style: none;
  padding: 1rem 1.1rem;
  transition: background-color .25s ease;
}

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

.page-products .version-card summary:hover {
  background: rgba(201, 162, 39, .06);
}

.page-products .version-no {
  font-family: var(--font-data);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--gold);
  border: 1px solid var(--gold-line);
  padding: .15rem .45rem;
  line-height: 1;
}

.page-products .version-headline {
  font-size: .95rem;
  color: var(--paper);
  font-weight: 600;
}

.page-products .changelog {
  margin: 0;
  padding: 0 1.1rem 1rem;
  font-size: .86rem;
  line-height: 1.65;
  color: var(--sage);
}

.page-products .timeline-figure {
  margin-top: 2rem;
  padding: .5rem;
  background: rgba(11, 26, 22, .35);
  border: 1px solid var(--gold-line);
  transition: border-color .25s ease;
}

.page-products .timeline-figure:hover {
  border-color: var(--gold);
}

.page-products .timeline-figure img {
  display: block;
  width: 100%;
  height: auto;
}

.page-products .products-compat {
  color: var(--pitch);
  background: var(--paper);
}

.page-products .products-compat .section-heading h2,
.page-products .products-compat .section-heading .chapter-label,
.page-products .products-compat .section-heading .chapter-no {
  color: var(--wine);
}

.page-products .products-compat .section-heading .section-desc {
  color: #4f5b56;
}

.page-products .compat-grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 700px) {
  .page-products .compat-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.page-products .compat-card {
  background: #fff;
  border: 1px solid rgba(11, 26, 22, .12);
  padding: 1.2rem;
  box-shadow: 0 10px 24px rgba(11, 26, 22, .06);
}

.page-products .compat-card h3 {
  margin: 0 0 .75rem;
  font-size: 1.05rem;
  color: var(--pitch);
  border-bottom: 3px solid var(--wine);
  display: inline-block;
  padding-bottom: .2rem;
}

.page-products .compat-card ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .compat-card li {
  font-family: var(--font-data);
  font-size: .8rem;
  line-height: 1.5;
  padding: .45rem 0;
  border-bottom: 1px dashed rgba(11, 26, 22, .15);
  display: flex;
  gap: .5rem;
}

.page-products .compat-card li::before {
  content: "/";
  color: var(--gold);
  font-weight: 700;
}

.page-products .compat-figure {
  margin-top: 2rem;
  padding: .5rem;
  background: #fff;
  border: 1px solid rgba(11, 26, 22, .12);
}

.page-products .compat-figure img {
  display: block;
  width: 100%;
  height: auto;
}

.page-products .products-help {
  background:
    linear-gradient(180deg, rgba(11, 26, 22, .85) 0%, var(--pitch) 100%),
    repeating-linear-gradient(90deg, transparent 0 59px, rgba(242, 239, 230, .03) 60px);
  text-align: center;
}

.page-products .products-help .chapter-label {
  justify-content: center;
}

.page-products .help-links {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  justify-content: center;
  margin-top: 1.2rem;
}