.page-products {
  --exp-line: var(--grid-line);
  --exp-card-bg: var(--ink-900);
  --exp-gap: 20px;
}

/* ---------- 首屏 ---------- */
.page-products .exp-hero {
  padding-top: 20px;
}

.page-products .exp-hero-inner {
  display: grid;
  gap: 28px;
}

.page-products .exp-hero-copy h1 {
  margin: 10px 0 0;
  font-size: clamp(28px, 7vw, 44px);
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--text-100);
}

.page-products .exp-hero-copy .lead {
  margin-top: 16px;
  max-width: 36em;
}

.page-products .exp-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-products .exp-hero-facts {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--grid-faint);
  border: 1px solid var(--grid-faint);
}

.page-products .exp-hero-facts li {
  background: var(--ink-950);
  padding: 14px 16px;
  display: grid;
  gap: 4px;
}

.page-products .exp-fact-num {
  color: var(--cyan-400);
  font-size: 15px;
  letter-spacing: 0.04em;
}

.page-products .exp-fact-text {
  color: var(--text-400);
  font-size: 13px;
  line-height: 1.7;
}

.page-products .exp-hero-media {
  margin: 0;
  border: 1px solid var(--exp-line);
}

/* ---------- 页内索引 ---------- */
.page-products .exp-toc-sec {
  padding-top: 8px;
}

.page-products .exp-toc-hint {
  margin: 0 0 10px;
  font-size: 13px;
}

.page-products .exp-toc {
  border-top: 1px solid var(--exp-line);
  border-bottom: 1px solid var(--exp-line);
  padding: 10px 0;
}

.page-products .exp-toc ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 8px;
}

.page-products .exp-toc a {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 6px 10px;
  border: 1px solid transparent;
  color: var(--text-400);
  font-size: 14px;
  text-decoration: none;
  transition: color var(--t-fast) ease, border-color var(--t-fast) ease,
    background-color var(--t-fast) ease;
}

.page-products .exp-toc a .mono {
  font-size: 12px;
  color: var(--cyan-400);
}

.page-products .exp-toc a:hover {
  color: var(--text-100);
  border-color: var(--exp-line);
}

.page-products .exp-toc a[aria-current="true"] {
  color: var(--cyan-200);
  border-color: var(--cyan-400);
  background: rgba(47, 227, 232, 0.07);
}

/* ---------- 区块标题 ---------- */
.page-products .exp-sec-head {
  display: grid;
  gap: 8px;
  margin-bottom: 26px;
  max-width: 60ch;
}

.page-products .exp-sec-num {
  color: var(--cyan-400);
  font-size: 12px;
  letter-spacing: 0.14em;
}

.page-products .exp-sec-head h2 {
  margin: 0;
  font-size: clamp(22px, 4.6vw, 32px);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--text-100);
}

.page-products .exp-sec-head .lead {
  margin: 0;
}

/* ---------- 设备切换与面板拼贴 ---------- */
.page-products .device-switch {
  border: 1px solid var(--exp-line);
  background: linear-gradient(180deg, rgba(19, 32, 72, 0.55), rgba(7, 14, 34, 0.9));
  padding: 14px;
}

.page-products .exp-device-bar {
  margin-bottom: 14px;
}

.page-products .previews {
  display: grid;
  gap: 16px;
}

.page-products .preview {
  border: 1px dashed rgba(36, 53, 111, 0.85);
  padding: 12px;
}

.page-products .preview--mobile {
  max-width: 320px;
}

.page-products .exp-preview-label {
  margin: 0 0 10px;
  font-size: 12px;
  color: var(--text-400);
  letter-spacing: 0.04em;
}

.page-products .collage {
  display: grid;
  gap: 10px;
  grid-template-columns: minmax(0, 1fr);
  grid-template-areas:
    "entry"
    "status"
    "feedback";
}

.page-products .bp {
  grid-area: auto;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 14px;
  min-height: 118px;
  border: 1px solid var(--exp-line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--ink-900), var(--ink-950));
  transition: border-color var(--t-fast) ease;
}

.page-products .bp--entry {
  grid-area: entry;
  background: linear-gradient(150deg, rgba(47, 227, 232, 0.14), var(--ink-900) 62%);
  box-shadow: inset 0 2px 0 var(--cyan-400);
}

.page-products .bp--status {
  grid-area: status;
  box-shadow: inset 0 2px 0 var(--text-400);
}

.page-products .bp--feedback {
  grid-area: feedback;
  box-shadow: inset 0 2px 0 var(--signal-500);
}

.page-products .bp:hover {
  border-color: rgba(47, 227, 232, 0.65);
}

.page-products .bp-num {
  font-size: 11px;
  color: var(--text-400);
  letter-spacing: 0.04em;
}

.page-products .bp-title {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-100);
}

.page-products .bp-note {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--text-400);
}

.page-products .bp .btn {
  align-self: flex-start;
  margin-top: auto;
}

.page-products .bp-lamp {
  display: block;
  width: 9px;
  height: 9px;
  margin-top: auto;
  border-radius: 50%;
  background: var(--cyan-400);
  box-shadow: 0 0 0 4px rgba(47, 227, 232, 0.16);
  animation: exp-lamp-breathe 3.2s ease-in-out infinite;
}

@keyframes exp-lamp-breathe {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.42;
  }
}

.page-products .exp-wide-note {
  margin-top: 24px;
  display: grid;
  gap: 12px;
  border-left: 2px solid var(--cyan-400);
  padding-left: 16px;
}

.page-products .exp-wide-note p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-100);
}

.page-products .exp-wide-note .muted {
  color: var(--text-400);
  font-size: 14px;
}

/* ---------- 三块面板说明 ---------- */
.page-products .exp-panels {
  display: grid;
  gap: 16px;
}

.page-products .exp-card {
  position: relative;
  display: grid;
  gap: 10px;
  align-content: start;
  padding: 22px 18px 20px;
  border: 1px solid var(--exp-line);
  border-radius: var(--radius);
  background: var(--exp-card-bg);
}

.page-products .exp-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
}

.page-products .exp-card--entry::before {
  background: var(--cyan-400);
}

.page-products .exp-card--status::before {
  background: var(--cyan-200);
}

.page-products .exp-card--feedback::before {
  background: var(--signal-500);
}

.page-products .exp-card-num {
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--cyan-400);
}

.page-products .exp-card h3 {
  margin: 0;
  font-size: 19px;
  color: var(--text-100);
}

.page-products .exp-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-400);
}

.page-products .exp-card ul {
  margin: 4px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 7px;
}

.page-products .exp-card li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-100);
}

.page-products .exp-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 7px;
  height: 1px;
  background: var(--cyan-400);
}

.page-products .exp-flow-figure {
  margin: 26px 0 0;
  border: 1px solid var(--exp-line);
}

/* ---------- 通用图文双栏 ---------- */
.page-products .exp-split {
  display: grid;
  gap: 26px;
}

.page-products .exp-split-copy p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--text-100);
}

.page-products .exp-split-copy p:last-child {
  margin-bottom: 0;
}

.page-products .exp-split-copy .muted {
  color: var(--text-400);
  font-size: 14px;
}

.page-products .exp-split-copy .exp-sec-head {
  margin-bottom: 16px;
}

.page-products .exp-fold-media,
.page-products .exp-apple-media {
  margin: 0;
  border: 1px solid var(--exp-line);
}

/* ---------- 使用场景 ---------- */
.page-products .exp-scenes {
  display: grid;
  gap: 12px;
}

.page-products .scene {
  border: 1px solid var(--exp-line);
  border-left: 2px solid var(--cyan-400);
  border-radius: var(--radius);
  background: var(--ink-900);
  padding: 18px;
}

.page-products .scene h3 {
  margin: 0 0 8px;
  font-size: 17px;
  color: var(--text-100);
}

.page-products .scene p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--text-400);
}

.page-products .scene p a {
  color: var(--cyan-200);
  text-decoration: none;
  border-bottom: 1px solid rgba(155, 244, 244, 0.4);
}

.page-products .scene-route {
  display: block;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--cyan-200);
}

.page-products .scene-route a {
  color: var(--cyan-200);
  text-decoration: none;
  border-bottom: 1px solid rgba(155, 244, 244, 0.4);
}

.page-products .exp-scene-figure {
  margin: 22px 0 0;
  border: 1px solid var(--exp-line);
}

/* ---------- 四步流程 ---------- */
.page-products .flow-strip {
  margin: 4px 0 14px;
}

.page-products .flow-strip svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-products .flow-steps {
  display: grid;
  gap: 12px;
}

.page-products .exp-step {
  border: 1px solid var(--exp-line);
  border-radius: var(--radius);
  background: var(--ink-900);
  padding: 14px 16px;
}

.page-products .exp-step summary {
  display: flex;
  align-items: baseline;
  gap: 10px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-100);
}

.page-products .exp-step-num {
  font-size: 12px;
  color: var(--signal-500);
  letter-spacing: 0.08em;
}

.page-products .exp-step .qa-body p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--text-400);
}

/* ---------- 自检清单 ---------- */
.page-products .exp-check-wrap {
  display: block;
}

.page-products .check-list {
  counter-reset: exp-done;
  display: grid;
  gap: 12px;
  padding: 18px;
  border: 1px solid var(--exp-line);
  border-radius: var(--radius);
  background: var(--ink-900);
}

.page-products .check-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-100);
  cursor: pointer;
}

.page-products .check-item input {
  appearance: none;
  -webkit-appearance: none;
  flex: none;
  width: 17px;
  height: 17px;
  margin: 4px 0 0;
  border: 1px solid var(--exp-line);
  border-radius: 0;
  background: var(--ink-950);
  cursor: pointer;
  transition: background-color var(--t-fast) ease, border-color var(--t-fast) ease,
    box-shadow var(--t-fast) ease;
}

.page-products .check-item input:hover {
  border-color: var(--cyan-400);
}

.page-products .check-item input:focus-visible {
  outline: 2px solid var(--cyan-400);
  outline-offset: 2px;
}

.page-products .check-item input:checked {
  counter-increment: exp-done;
  background: var(--cyan-400);
  border-color: var(--cyan-400);
  box-shadow: inset 0 0 0 4px var(--ink-950);
}

.page-products .check-count::after {
  content: counter(exp-done);
}

.page-products .check-total {
  grid-column: 1 / -1;
  margin: 4px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--grid-faint);
  font-size: 13px;
  color: var(--text-400);
}

.page-products .check-count {
  font-family: var(--font-mono);
  color: var(--cyan-200);
}

/* ---------- 延伸入口 ---------- */
.page-products .exp-next {
  display: grid;
  gap: 12px;
}

.page-products .next-card {
  display: block;
  padding: 20px 18px;
  border: 1px solid var(--exp-line);
  border-radius: var(--radius);
  background: var(--ink-900);
  color: inherit;
  text-decoration: none;
  transition: border-color var(--t-fast) ease, background-color var(--t-fast) ease;
}

.page-products .next-card:hover {
  border-color: var(--cyan-400);
  background: var(--ink-800);
}

.page-products .next-card .mono {
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--cyan-400);
}

.page-products .next-card strong {
  display: block;
  margin: 10px 0 8px;
  font-size: 17px;
  color: var(--text-100);
}

.page-products .next-card .note {
  display: block;
  font-size: 14px;
  line-height: 1.85;
  color: var(--text-400);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-products .exp-hero-facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-products .preview--desktop .collage {
    grid-template-columns: minmax(0, 6fr) minmax(0, 2.4fr);
    grid-template-areas:
      "entry status"
      "feedback feedback";
  }

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

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

  .page-products .check-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px 26px;
  }

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

@media (min-width: 900px) {
  .page-products .exp-hero-inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: center;
    gap: 48px;
  }

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

  .page-products .exp-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 300px);
    gap: 40px;
    align-items: start;
  }

  .page-products .exp-split--flip {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .page-products .exp-split--flip .exp-apple-media {
    order: 2;
  }

  .page-products .exp-split--flip .exp-split-copy {
    order: 1;
  }

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

@media (min-width: 1200px) {
  .page-products .previews {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: start;
    gap: 22px;
  }

  .page-products .preview--mobile {
    width: 320px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .bp-lamp {
    animation: none;
    opacity: 1;
  }

  .page-products .bp,
  .page-products .exp-toc a,
  .page-products .check-item input,
  .page-products .next-card {
    transition: none;
  }
}