.page-products {
  --pp-gap: clamp(20px, 3vw, 40px);
  --pp-pad: clamp(20px, 3.4vw, 40px);
  position: relative;
  padding-top: var(--header-h);
  overflow-x: hidden;
  background: var(--ink-900);
}

.page-products .pp-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 84px 84px;
  opacity: .3;
  -webkit-mask-image: radial-gradient(130% 70% at 50% 0%, #000 15%, transparent 78%);
  mask-image: radial-gradient(130% 70% at 50% 0%, #000 15%, transparent 78%);
}

.page-products > section {
  position: relative;
  z-index: 1;
}

.page-products .mono {
  font-family: var(--font-data);
  letter-spacing: .1em;
}

/* ---------- 首屏 ---------- */
.page-products .pp-hero {
  padding: clamp(28px, 5vw, 56px) 0 clamp(36px, 6vw, 72px);
}

.page-products .crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: clamp(24px, 4vw, 44px);
}

.page-products .crumbs a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

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

.page-products .pp-hero-grid {
  display: grid;
  gap: var(--pp-gap);
  grid-template-columns: 1fr;
}

.page-products .pp-hero-copy h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(34px, 7.4vw, 74px);
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--text);
  margin: 12px 0 20px;
  max-width: 16em;
}

.page-products .pp-hero-copy .lead {
  max-width: 40em;
  color: var(--muted);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
}

.page-products .pp-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-products .pp-hero-panel {
  padding: var(--pp-pad);
  border-radius: var(--radius-l);
  border: 1px solid var(--line);
}

.page-products .pp-panel-label {
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--aqua);
  margin-bottom: 20px;
}

.page-products .pp-metrics {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.page-products .pp-metrics > div {
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.page-products .pp-metrics dt {
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 6px;
}

.page-products .pp-metrics dd {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin: 0;
}

.page-products .pp-metrics .stat-value {
  font-family: var(--font-data);
  font-weight: 700;
  font-size: clamp(26px, 4vw, 36px);
  color: var(--signal);
  line-height: 1;
}

.page-products .pp-metrics .stat-unit {
  font-size: 12px;
  color: var(--muted);
}

.page-products .note {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.7;
  margin-top: 18px;
}

/* ---------- 通用区块 ---------- */
.page-products .pp-section {
  padding: clamp(48px, 8vw, 104px) 0;
  border-top: 1px solid var(--line);
}

.page-products .pp-section--panel {
  background: var(--ink-800);
}

.page-products .pp-section--paper {
  background: var(--paper);
  color: #0A1220;
}

.page-products .pp-section--paper .section-head h2,
.page-products .pp-section--paper .form-card h3 {
  color: #0A1220;
}

.page-products .pp-section--paper .section-head .lead {
  color: #46536B;
}

.page-products .pp-section--paper .eyebrow {
  color: #0B6B5C;
}

.page-products .section-head {
  max-width: 64ch;
  margin-bottom: clamp(28px, 4.4vw, 52px);
}

.page-products .section-head h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(26px, 4.4vw, 46px);
  line-height: 1.18;
  letter-spacing: -.015em;
  color: var(--text);
  margin: 12px 0 16px;
}

.page-products .section-head .lead {
  color: var(--muted);
  line-height: 1.85;
}

/* ---------- 分区切换 ---------- */
.page-products .zone-switch {
  position: relative;
}

.page-products .zone-input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-products .seg-bar {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 6px;
  padding: 6px;
  border-radius: var(--radius-m);
  border: 1px solid var(--line);
  background: rgba(16, 27, 46, .72);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}

.page-products .seg-btn {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 12px 14px;
  border-radius: var(--radius-s);
  cursor: pointer;
  color: var(--muted);
  transition: background .18s var(--ease), color .18s var(--ease);
}

.page-products .seg-btn .mono {
  font-size: 11px;
  color: var(--aqua);
}

.page-products .seg-name {
  font-size: clamp(13px, 1.6vw, 15px);
  font-weight: 600;
}

.page-products .seg-btn:hover {
  color: var(--text);
  background: rgba(232, 238, 249, .05);
}

.page-products .zone-input:focus-visible ~ .seg-bar .seg-btn {
  outline: 2px solid var(--aqua);
  outline-offset: 2px;
}

.page-products #z-front:checked ~ .seg-bar label[for="z-front"],
.page-products #z-transfer:checked ~ .seg-bar label[for="z-transfer"],
.page-products #z-table:checked ~ .seg-bar label[for="z-table"] {
  background: var(--signal);
  color: var(--on-signal);
}

.page-products #z-front:checked ~ .seg-bar label[for="z-front"] .mono,
.page-products #z-transfer:checked ~ .seg-bar label[for="z-transfer"] .mono,
.page-products #z-table:checked ~ .seg-bar label[for="z-table"] .mono {
  color: rgba(8, 19, 26, .6);
}

.page-products .seg-panel {
  display: none;
  gap: clamp(20px, 3vw, 44px);
  grid-template-columns: 1fr;
  margin-top: clamp(24px, 3.6vw, 40px);
  padding: var(--pp-pad);
  border-radius: var(--radius-l);
  border: 1px solid var(--line);
  background: var(--glass);
}

.page-products #z-front:checked ~ .seg-panels #p-front,
.page-products #z-transfer:checked ~ .seg-panels #p-transfer,
.page-products #z-table:checked ~ .seg-panels #p-table {
  display: grid;
  animation: pp-fade-slide .34s var(--ease) both;
}

@keyframes pp-fade-slide {
  from { opacity: 0; transform: translateX(14px); }
  to { opacity: 1; transform: none; }
}

.page-products .seg-copy h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(20px, 2.8vw, 30px);
  line-height: 1.3;
  color: var(--text);
  margin: 14px 0 14px;
}

.page-products .seg-copy p {
  color: var(--muted);
  line-height: 1.85;
}

.page-products .pp-list {
  list-style: none;
  padding: 0;
  margin: 22px 0 0;
  display: grid;
  gap: 12px;
}

.page-products .pp-list li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
}

.page-products .pp-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 10px;
  height: 2px;
  background: var(--signal);
}

.page-products .pp-list--wide li::before {
  background: var(--orange);
}

.page-products .seg-visual .media-frame {
  border-radius: var(--radius-m);
  overflow: hidden;
  border: 1px solid var(--line);
}

.page-products .seg-visual img,
.page-products .ios-visual img,
.page-products .switch-visual img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 收藏 ---------- */
.page-products .collect-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 56px);
}

.page-products .collect-copy h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(26px, 4.2vw, 44px);
  line-height: 1.2;
  color: var(--text);
  margin: 12px 0 18px;
}

.page-products .collect-copy .lead {
  color: var(--muted);
  line-height: 1.85;
  max-width: 40em;
}

.page-products .pp-steps {
  list-style: none;
  padding: 0;
  margin: 30px 0 26px;
  display: grid;
  gap: 22px;
  counter-reset: pp-step;
}

.page-products .pp-steps li {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 16px;
  padding-left: 0;
  position: relative;
}

.page-products .pp-steps li::after {
  content: "";
  position: absolute;
  left: 21px;
  top: 32px;
  bottom: -20px;
  width: 1px;
  background: linear-gradient(var(--line), transparent);
}

.page-products .pp-steps li:last-child::after {
  display: none;
}

.page-products .pp-steps .mono {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--aqua);
  color: var(--aqua);
  font-size: 12px;
  font-weight: 700;
}

.page-products .pp-steps h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}

.page-products .pp-steps p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-products .collect-board {
  padding: var(--pp-pad);
  border-radius: var(--radius-l);
  border: 1px solid var(--line);
  align-self: start;
}

.page-products .collect-slots {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.page-products .slot {
  display: block;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-s);
  border: 1px dashed var(--line);
  background: rgba(232, 238, 249, .03);
}

.page-products .slot--league.is-filled {
  background: linear-gradient(150deg, var(--signal), #8FCB22);
  border-style: solid;
  border-color: transparent;
}

.page-products .slot--topic.is-filled {
  background: linear-gradient(150deg, var(--violet), #4A56C9);
  border-style: solid;
  border-color: transparent;
}

.page-products .collect-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 20px;
  font-size: 13px;
  color: var(--muted);
}

.page-products .legend-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.page-products .dot {
  width: 10px;
  height: 10px;
  border-radius: 3px;
  display: inline-block;
}

.page-products .dot--league { background: var(--signal); }
.page-products .dot--topic { background: var(--violet); }
.page-products .dot--empty { background: transparent; border: 1px dashed var(--line); }

/* ---------- iOS 测试版 ---------- */
.page-products .ios-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 56px);
}

.page-products .ios-copy h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(26px, 4.2vw, 44px);
  line-height: 1.2;
  color: var(--text);
  margin: 12px 0 18px;
}

.page-products .ios-copy .lead {
  color: var(--muted);
  line-height: 1.85;
  max-width: 40em;
}

.page-products .pp-steps--numbered .mono {
  border-color: var(--orange);
  color: var(--orange);
}

.page-products .pp-steps--numbered li::after {
  background: linear-gradient(var(--orange), transparent);
}

.page-products .ios-visual {
  display: grid;
  gap: 20px;
  align-content: start;
}

.page-products .ios-visual .media-frame {
  border-radius: var(--radius-m);
  overflow: hidden;
  border: 1px solid var(--line);
}

.page-products .ios-facts {
  padding: 20px 22px;
  border-radius: var(--radius-m);
  border: 1px solid var(--line);
  display: grid;
  gap: 14px;
}

.page-products .ios-facts > div {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.page-products .ios-facts > div:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-products .ios-facts .mono {
  font-size: 12px;
  color: var(--muted);
}

.page-products .ios-facts strong {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  text-align: right;
}

/* ---------- 四种形态 ---------- */
.page-products .forms-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-products .form-card {
  padding: clamp(20px, 2.6vw, 30px);
  border-radius: var(--radius-m);
  background: #FFFFFF;
  border: 1px solid #DDE4F0;
  border-left-width: 4px;
  transition: transform .22s var(--ease), box-shadow .22s var(--ease);
}

.page-products .form-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 34px rgba(10, 18, 32, .12);
}

.page-products .form-card .mono {
  font-size: 11px;
  color: #6B7893;
}

.page-products .form-card h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  margin: 10px 0 10px;
}

.page-products .form-card p {
  font-size: 14.5px;
  line-height: 1.8;
  color: #46536B;
}

.page-products .form-card--signal { border-left-color: #7FBF12; }
.page-products .form-card--aqua { border-left-color: #12A893; }
.page-products .form-card--orange { border-left-color: #E8631A; }
.page-products .form-card--violet { border-left-color: #4A56C9; }

/* ---------- 切换体验 ---------- */
.page-products .switch-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 52px);
  align-items: center;
}

.page-products .switch-visual .media-frame {
  border-radius: var(--radius-m);
  overflow: hidden;
  border: 1px solid var(--line);
}

.page-products .switch-copy h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(26px, 4.2vw, 44px);
  line-height: 1.2;
  color: var(--text);
  margin: 12px 0 18px;
}

.page-products .switch-copy .lead {
  color: var(--muted);
  line-height: 1.85;
}

.page-products .link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 26px;
  font-size: 15px;
  font-weight: 600;
  color: var(--aqua);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
}

.page-products .link-arrow::after {
  content: "→";
  transition: transform .2s var(--ease);
}

.page-products .link-arrow:hover {
  border-bottom-color: var(--aqua);
}

.page-products .link-arrow:hover::after {
  transform: translateX(4px);
}

/* ---------- 性能 ---------- */
.page-products .perf-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  overflow: hidden;
}

.page-products .perf-item {
  background: var(--ink-800);
  padding: clamp(22px, 3vw, 34px);
}

.page-products .perf-item .mono {
  font-size: 11px;
  color: var(--orange);
}

.page-products .perf-item h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 19px;
  color: var(--text);
  margin: 12px 0 10px;
}

.page-products .perf-item p {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 结尾 ---------- */
.page-products .pp-cta {
  padding-bottom: clamp(56px, 9vw, 120px);
}

.page-products .cta-box {
  border-radius: var(--radius-l);
  border: 1px solid var(--line);
  padding: clamp(26px, 4vw, 52px);
  display: grid;
  gap: 28px;
  grid-template-columns: 1fr;
}

.page-products .cta-box h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(24px, 3.6vw, 38px);
  line-height: 1.22;
  color: var(--text);
  margin: 12px 0 16px;
}

.page-products .cta-box .lead {
  color: var(--muted);
  line-height: 1.85;
  max-width: 46em;
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-products .pp-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-products .seg-panel {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: center;
  }

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

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

  .page-products .collect-slots {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .page-products .pp-hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
  }

  .page-products .collect-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-products .ios-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    align-items: start;
  }

  .page-products .switch-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
  }

  .page-products .forms-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-products .perf-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-products .cta-box {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }

  .page-products .collect-grid .collect-board {
    margin-top: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products #z-front:checked ~ .seg-panels #p-front,
  .page-products #z-transfer:checked ~ .seg-panels #p-transfer,
  .page-products #z-table:checked ~ .seg-panels #p-table {
    animation: none;
  }

  .page-products .form-card:hover {
    transform: none;
  }
}