.page-products{
  --prod-grid-line: rgba(255,255,255,0.07);
  --prod-grid-dark: rgba(11,37,69,0.05);
  --prod-neon-soft: rgba(0,229,160,0.14);
  --prod-gold-soft: rgba(212,175,55,0.14);
  --prod-ink-deep: #081E3C;
  overflow-x: clip;
  background: var(--paper);
  color: var(--text-main);
}

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

.page-products .prod-crumb{
  background: var(--paper);
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}

/* ===== HERO ===== */
.page-products .prod-hero{
  position: relative;
  background: linear-gradient(160deg, var(--prod-ink-deep) 0%, var(--ink) 55%, var(--ink-soft) 100%);
  color: var(--white);
  padding: 64px 0 88px;
  overflow: hidden;
}

.page-products .prod-hero::before{
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--prod-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--prod-grid-line) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,0.9), transparent 92%);
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.9), transparent 92%);
  pointer-events: none;
}

.page-products .prod-hero__grid{
  position: relative;
  display: grid;
  gap: 56px;
  align-items: center;
}

.page-products .prod-hero .section-kicker{
  color: var(--neon);
}

.page-products .prod-hero h1{
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(36px, 7vw, 64px);
  line-height: 1.08;
  text-transform: uppercase;
  letter-spacing: 0.01em;
  color: var(--white);
  margin: 16px 0 20px;
}

.page-products .prod-hero__lead{
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255,255,255,0.76);
  max-width: 560px;
}

.page-products .prod-hero__stats{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 34px 0 30px;
}

.page-products .hero-stat{
  border-left: 2px solid var(--neon);
  padding-left: 12px;
}

.page-products .hero-stat__num{
  display: block;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 32px;
  line-height: 1.1;
  color: var(--neon);
  font-variant-numeric: tabular-nums;
}

.page-products .hero-stat__label{
  display: block;
  font-size: 12px;
  line-height: 1.4;
  color: rgba(255,255,255,0.62);
  margin-top: 6px;
}

.page-products .prod-hero__actions{
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-products .prod-hero .btn--solid{
  background: var(--neon);
  border-color: var(--neon);
  color: var(--ink);
}

.page-products .prod-hero .btn--ghost{
  border-color: rgba(255,255,255,0.45);
  color: var(--white);
}

.page-products .prod-hero .btn--ghost:hover{
  border-color: var(--neon);
  color: var(--neon);
}

.page-products .prod-hero__visual{
  display: flex;
  justify-content: center;
}

.page-products .device-shell{
  width: min(68vw, 250px);
  padding: 12px;
  background: linear-gradient(145deg, rgba(255,255,255,0.14), rgba(255,255,255,0.02));
  border: 1px solid rgba(255,255,255,0.16);
  border-radius: 24px;
  box-shadow: 0 24px 70px rgba(0,0,0,0.38);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.page-products .device-shell:hover{
  transform: translateY(-6px) rotate(-1deg);
  box-shadow: 0 30px 80px rgba(0,229,160,0.12), 0 24px 70px rgba(0,0,0,0.38);
}

.page-products .device-shell__chrome{
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  background: var(--paper);
}

.page-products .device-shell__speaker{
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  width: 64px;
  height: 5px;
  background: rgba(11,37,69,0.35);
  border-radius: 999px;
  z-index: 2;
}

.page-products .device-shell__img{
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 2;
  object-fit: cover;
  border-radius: 14px;
}

.page-products .device-shell__meta{
  display: flex;
  justify-content: space-between;
  padding: 14px 4px 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.65);
}

/* ===== SECTION HEAD ===== */
.page-products .prod-section-head{
  margin-bottom: 40px;
}

.page-products .prod-section-head h2,
.page-products .prod-access h2,
.page-products .prod-evolution h2,
.page-products .prod-download h2{
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.15;
  text-transform: uppercase;
  letter-spacing: 0.01em;
  color: var(--ink);
  margin: 12px 0;
}

.page-products .prod-section-head__desc{
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-muted);
  max-width: 640px;
}

/* ===== FEATURES ===== */
.page-products .prod-features{
  background: var(--paper);
  padding: 72px 0 64px;
}

.page-products .feature-tabs{
  border-top: 1px solid var(--border);
}

.page-products .feature-tabs__list{
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
}

.page-products .feature-tabs__trigger{
  appearance: none;
  -webkit-appearance: none;
  border: 1px solid var(--border);
  background: transparent;
  padding: 10px 20px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  cursor: pointer;
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease), background 0.25s var(--ease);
}

.page-products .feature-tabs__trigger:hover,
.page-products .feature-tabs__trigger[aria-selected="true"]{
  border-color: var(--neon);
  color: var(--ink);
  background: var(--prod-neon-soft);
}

.page-products .feature-tabs__trigger:focus-visible{
  outline: 2px solid var(--neon);
  outline-offset: 2px;
}

.page-products .feature-tabs__panels{
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding-top: 36px;
}

.page-products .feature-tabs__panel{
  display: grid;
  gap: 28px;
  background: #FFFFFF;
  border: 1px solid var(--border);
  border-left: 4px solid var(--neon);
  padding: 28px;
  box-shadow: 0 10px 30px rgba(11,37,69,0.05);
}

.page-products .feature-tabs__index{
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-products .feature-tabs__copy h3{
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 24px;
  line-height: 1.3;
  text-transform: uppercase;
  color: var(--ink);
  margin: 8px 0 12px;
}

.page-products .feature-tabs__copy p{
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-main);
}

.page-products .feature-tabs__points{
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-products .feature-tabs__points li{
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-muted);
}

.page-products .feature-tabs__points li::before{
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  background: var(--neon);
  transform: rotate(45deg);
}

.page-products .feature-tabs__visual img{
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid var(--border);
}

.page-products .batch-sim{
  border: 1px solid var(--border);
  background: var(--prod-ink-deep);
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  color: rgba(255,255,255,0.85);
}

.page-products .batch-sim__head,
.page-products .batch-sim__row{
  display: grid;
  grid-template-columns: 1fr 0.6fr 0.6fr;
  gap: 8px;
  padding: 10px 6px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
}

.page-products .batch-sim__head{
  color: var(--neon);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 11px;
}

.page-products .batch-sim__row:last-of-type{
  border-bottom: 0;
}

.page-products .batch-sim__row span:nth-child(2),
.page-products .batch-sim__row span:nth-child(3){
  text-align: right;
}

.page-products .batch-sim__foot{
  margin-top: 12px;
  padding: 8px 6px 2px;
  border-top: 1px dashed rgba(255,255,255,0.25);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.5);
}

.page-products .prod-note{
  margin: 32px 0 0;
  padding: 16px 18px;
  border-left: 3px solid var(--gold);
  background: var(--prod-gold-soft);
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-muted);
}

.page-products .prod-note a{
  color: var(--ink);
  font-weight: 500;
}

/* ===== ACCESS ===== */
.page-products .prod-access{
  background: #FFFFFF;
  padding: 72px 0;
}

.page-products .prod-access__grid{
  display: grid;
  gap: 44px;
  align-items: center;
}

.page-products .prod-access h2{
  text-transform: uppercase;
}

.page-products .prod-access__lead{
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-muted);
  margin-bottom: 28px;
}

.page-products .access-card{
  padding: 20px 0;
  border-top: 1px solid var(--border);
}

.page-products .access-card:last-of-type{
  border-bottom: 1px solid var(--border);
}

.page-products .access-card__tag{
  margin-bottom: 10px;
}

.page-products .access-card h3{
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.3;
  text-transform: uppercase;
  color: var(--ink);
  margin: 10px 0 8px;
}

.page-products .access-card p{
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-muted);
}

.page-products .prod-access__visual img{
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

/* ===== EVOLUTION ===== */
.page-products .prod-evolution{
  background: var(--ink);
  color: var(--white);
  padding: 72px 0;
  position: relative;
}

.page-products .prod-evolution::before{
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--prod-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--prod-grid-line) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.page-products .prod-evolution__inner{
  position: relative;
}

.page-products .prod-evolution h2{
  color: var(--white);
  text-transform: uppercase;
  margin: 12px 0 44px;
}

.page-products .prod-evolution .section-kicker{
  color: var(--neon);
}

.page-products .evolve-track{
  display: grid;
  gap: 28px;
}

.page-products .evolve-node{
  position: relative;
  padding: 0 0 0 18px;
  margin-left: 6px;
  border-left: 2px solid rgba(255,255,255,0.18);
}

.page-products .evolve-node::before{
  content: "";
  position: absolute;
  left: -5px;
  top: 2px;
  width: 8px;
  height: 8px;
  background: var(--neon);
  border-radius: 50%;
}

.page-products .evolve-node--current{
  border-left-color: var(--neon);
}

.page-products .evolve-node__year{
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.page-products .evolve-node__ver{
  display: block;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 26px;
  line-height: 1.2;
  text-transform: uppercase;
  color: var(--white);
  margin: 8px 0;
}

.page-products .evolve-node--current .evolve-node__ver{
  color: var(--neon);
}

.page-products .evolve-node__desc{
  font-size: 14px;
  line-height: 1.6;
  color: rgba(255,255,255,0.68);
}

.page-products .evolve-visual{
  margin-top: 40px;
}

.page-products .evolve-visual img{
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 5;
  object-fit: cover;
  border: 1px solid rgba(255,255,255,0.14);
}

.page-products .prod-note--light{
  border-left-color: var(--neon);
  background: rgba(0,229,160,0.08);
  color: rgba(255,255,255,0.72);
  margin-top: 36px;
}

.page-products .prod-note--light a{
  color: var(--neon);
}

/* ===== SCENARIOS ===== */
.page-products .prod-scenarios{
  background: var(--paper);
  padding: 72px 0 56px;
}

.page-products .scenario-grid{
  display: grid;
  gap: 20px;
}

.page-products .scenario-card{
  position: relative;
  background: #FFFFFF;
  border: 1px solid var(--border);
  padding: 24px 24px 28px;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.page-products .scenario-card:hover{
  transform: translateY(-4px);
  box-shadow: 0 14px 34px rgba(11,37,69,0.1);
}

.page-products .scenario-card__index{
  position: absolute;
  top: 14px;
  right: 16px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.page-products .scenario-card__tag{
  margin-bottom: 14px;
}

.page-products .scenario-card h3{
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 22px;
  line-height: 1.3;
  text-transform: uppercase;
  color: var(--ink);
  margin: 6px 0 12px;
}

.page-products .scenario-card p{
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-main);
}

.page-products .scenario-card__steps{
  margin: 18px 0 0;
  padding: 14px 0 0;
  border-top: 1px dashed var(--border);
  list-style: none;
  display: grid;
  gap: 8px;
  counter-reset: scenario-step;
}

.page-products .scenario-card__steps li{
  counter-increment: scenario-step;
  display: flex;
  gap: 10px;
  align-items: baseline;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

.page-products .scenario-card__steps li::before{
  content: "步骤 " counter(scenario-step);
  flex: none;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 11px;
  line-height: 1.4;
  color: var(--neon);
  background: var(--prod-neon-soft);
  padding: 2px 6px;
}

/* ===== DOWNLOAD ===== */
.page-products .prod-download{
  background: #FFFFFF;
  padding: 72px 0 96px;
}

.page-products .prod-download__frame{
  display: grid;
  gap: 36px;
  padding: 28px;
  border: 1px solid var(--gold);
  box-shadow: 0 0 0 4px rgba(212,175,55,0.12), 0 20px 60px rgba(11,37,69,0.12);
}

.page-products .prod-download__qr{
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-products .qr-placeholder{
  position: relative;
  width: 200px;
  height: 200px;
  background:
    linear-gradient(rgba(11,37,69,0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(11,37,69,0.1) 1px, transparent 1px),
    var(--paper);
  background-size: 16px 16px;
  border: 1px solid var(--ink);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
}

.page-products .qr-placeholder__corner{
  position: absolute;
  width: 36px;
  height: 36px;
  border: 4px solid var(--ink);
}

.page-products .qr-placeholder__corner--tl{
  top: -8px;
  left: -8px;
  border-right: 0;
  border-bottom: 0;
}

.page-products .qr-placeholder__corner--tr{
  top: -8px;
  right: -8px;
  border-left: 0;
  border-bottom: 0;
}

.page-products .qr-placeholder__corner--bl{
  bottom: -8px;
  left: -8px;
  border-right: 0;
  border-top: 0;
}

.page-products .qr-placeholder__corner--br{
  bottom: -8px;
  right: -8px;
  border-left: 0;
  border-top: 0;
}

.page-products .qr-placeholder__label{
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 18px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink);
  background: var(--paper);
  padding: 4px 10px;
  border: 1px solid var(--gold);
}

.page-products .prod-download__copy h2{
  text-transform: uppercase;
}

.page-products .prod-download__lead{
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-muted);
}

.page-products .prod-download__steps{
  list-style: none;
  margin: 24px 0;
  padding: 0;
  display: grid;
  gap: 12px;
  counter-reset: dl-step;
}

.page-products .prod-download__steps li{
  counter-increment: dl-step;
  position: relative;
  padding-left: 44px;
  min-height: 30px;
  display: flex;
  align-items: center;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-main);
}

.page-products .prod-download__steps li::before{
  content: counter(dl-step);
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--neon);
  background: var(--prod-neon-soft);
  color: var(--ink);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 14px;
}

.page-products .prod-download__actions{
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
}

.page-products .prod-download__actions .btn--gold{
  border-color: var(--gold);
  background: var(--gold);
  color: var(--ink);
}

.page-products .prod-download__actions .btn--ghost{
  border-color: var(--border);
  color: var(--ink);
}

.page-products .prod-download__actions .btn--ghost:hover{
  border-color: var(--neon);
  color: var(--ink);
  background: var(--prod-neon-soft);
}

.page-products .prod-download__note{
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px dashed var(--border);
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-muted);
}

.page-products .prod-download__note a{
  color: var(--ink);
  font-weight: 500;
}

/* ===== 桌面端增强 ===== */
@media (min-width: 768px){
  .page-products .prod-hero__grid{
    grid-template-columns: 7fr 5fr;
    gap: 48px;
  }

  .page-products .prod-hero{
    padding: 84px 0 112px;
  }

  .page-products .feature-tabs__panel{
    grid-template-columns: 1fr 1fr;
    gap: 36px;
    align-items: center;
    padding: 36px;
  }

  .page-products .scenario-grid{
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .page-products .prod-download__frame{
    grid-template-columns: 300px 1fr;
    gap: 44px;
    padding: 44px;
    align-items: center;
  }

  .page-products .prod-download__qr{
    border-right: 1px dashed var(--border);
    min-height: 280px;
  }
}

@media (min-width: 1024px){
  .page-products .prod-access__grid{
    grid-template-columns: 5fr 7fr;
    gap: 64px;
  }

  .page-products .prod-evolution{
    padding: 96px 0;
  }

  .page-products .evolve-track{
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    position: relative;
    margin-bottom: 48px;
  }

  .page-products .evolve-track::before{
    content: "";
    position: absolute;
    top: 4px;
    left: 0;
    right: 0;
    height: 2px;
    background: rgba(255,255,255,0.16);
  }

  .page-products .evolve-node{
    border-left: 0;
    padding: 20px 0 0;
    margin-left: 0;
  }

  .page-products .evolve-node::before{
    left: 0;
    top: -4px;
  }

  .page-products .prod-features,
  .page-products .prod-access,
  .page-products .prod-scenarios{
    padding: 96px 0;
  }

  .page-products .prod-download{
    padding: 96px 0 120px;
  }
}