.page-products {
  --prod-gap: clamp(20px, 3.2vw, 40px);
  --prod-radius: clamp(18px, 2.6vw, 30px);
  --prod-border: rgba(244, 239, 230, 0.14);
  --prod-paper-line: rgba(42, 30, 18, 0.16);
}

/* ---------- 面包屑 ---------- */
.page-products .prod-crumbs {
  padding-top: 14px;
  padding-bottom: 4px;
}

.page-products .prod-crumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.page-products .prod-crumbs li + li::before {
  content: "/";
  margin-right: 6px;
  color: var(--faint);
}

.page-products .prod-crumbs a {
  color: var(--muted);
  text-decoration: none;
}

.page-products .prod-crumbs a:hover,
.page-products .prod-crumbs a:focus-visible {
  color: var(--gold);
}

.page-products .prod-crumbs li[aria-current="page"] {
  color: var(--white);
}

/* ---------- 首屏 ---------- */
.page-products .prod-hero {
  display: grid;
  gap: clamp(34px, 5vw, 60px);
  align-items: center;
  padding-block: clamp(22px, 3.4vw, 40px) clamp(56px, 8vw, 100px);
}

.page-products .prod-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(34px, 5.6vw, 64px);
  line-height: 1.1;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-products .prod-lede {
  margin: 22px 0 0;
  max-width: 32em;
  font-size: clamp(15px, 1.5vw, 17.5px);
  line-height: 1.95;
  color: var(--muted);
}

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

.page-products .prod-hero-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 16px;
  margin: 34px 0 0;
  padding-top: 22px;
  border-top: 1px solid var(--prod-border);
}

.page-products .prod-hero-meta dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--faint);
}

.page-products .prod-hero-meta dd {
  margin: 6px 0 0;
  font-size: 14px;
  color: var(--white);
}

/* 首屏房间卡片叠层 */
.page-products .prod-hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  padding-block: 18px 40px;
}

.page-products .hero-stack {
  position: relative;
  width: min(100%, 372px);
  min-height: 300px;
}

.page-products .stack-card {
  position: absolute;
  left: 0;
  right: 0;
  padding: 18px 20px 20px;
  border-radius: var(--prod-radius);
  border: 1px solid var(--prod-border);
  background: var(--ink-800);
  box-shadow: var(--shadow-lift);
}

.page-products .stack-card--back {
  top: 0;
  transform: translateY(64px) rotate(6deg) scale(0.93);
  opacity: 0.55;
  z-index: 1;
}

.page-products .stack-card--mid {
  top: 0;
  transform: translateY(32px) rotate(-5deg) scale(0.96);
  opacity: 0.82;
  z-index: 2;
}

.page-products .stack-card--front {
  top: 0;
  transform: rotate(-1deg);
  z-index: 3;
  background: linear-gradient(158deg, rgba(26, 42, 66, 0.96), rgba(13, 22, 38, 0.98));
  border-color: rgba(232, 182, 90, 0.32);
}

.page-products .stack-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.page-products .stack-scene {
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--faint);
}

.page-products .stack-title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 700;
  color: var(--white);
}

.page-products .stack-line {
  margin: 12px 0 0;
  font-size: 13px;
  color: var(--muted);
}

.page-products .stack-line .mono {
  font-size: 19px;
  font-weight: 700;
  color: var(--gold);
}

/* ---------- 章节头 ---------- */
.page-products .prod-section-head {
  max-width: 40em;
  margin-bottom: clamp(26px, 4vw, 44px);
}

.page-products .prod-section-head .section-title {
  margin: 12px 0 0;
}

.page-products .section-lede {
  margin: 18px 0 0;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--muted);
}

.page-products .section-title {
  font-family: var(--font-display);
  font-size: clamp(26px, 3.4vw, 40px);
  line-height: 1.22;
  font-weight: 800;
  color: var(--white);
  margin: 0;
}

.page-products .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

/* ---------- 设备区 ---------- */
.page-products .prod-device {
  padding-block: clamp(48px, 7vw, 88px);
  border-top: 1px solid var(--prod-border);
}

.page-products .prod-device-grid {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
  align-items: start;
}

.page-products .device-title {
  margin-top: 12px;
  font-size: clamp(24px, 2.8vw, 32px);
}

.page-products .device-list {
  display: grid;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-products .device-item {
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: 14px;
  row-gap: 3px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--prod-border);
  background: var(--ink-850);
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease);
}

.page-products .device-item:hover {
  transform: translateX(4px);
  border-color: rgba(232, 182, 90, 0.42);
}

.page-products .device-item--on {
  border-color: rgba(232, 182, 90, 0.5);
  background: linear-gradient(120deg, rgba(232, 182, 90, 0.12), rgba(13, 22, 38, 0.9));
}

.page-products .device-num {
  grid-row: span 2;
  align-self: center;
  font-size: 20px;
  font-weight: 700;
  color: var(--gold);
}

.page-products .device-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--white);
}

.page-products .device-note {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--muted);
}

.page-products .device-body p {
  margin: 0 0 18px;
  max-width: 34em;
  font-size: 15.5px;
  line-height: 1.95;
  color: var(--muted);
}

.page-products .device-body .device-lead {
  font-size: 16.5px;
  color: rgba(244, 239, 230, 0.86);
}

.page-products .device-figure {
  margin: 26px 0 0;
}

/* ---------- 浅色阅读区通用 ---------- */
.page-products .prod-rooms,
.page-products .prod-cards,
.page-products .prod-faq {
  background: var(--paper);
  color: var(--paper-ink);
  border-radius: clamp(24px, 3.6vw, 46px);
  padding-block: clamp(46px, 6.5vw, 88px);
  margin-inline: clamp(0px, 1.6vw, 18px);
}

.page-products .prod-rooms .section-title,
.page-products .prod-cards .section-title,
.page-products .prod-faq .section-title {
  color: var(--paper-ink);
}

.page-products .prod-rooms .section-lede,
.page-products .prod-cards .section-lede {
  color: #5b4832;
}

.page-products .prod-rooms .eyebrow,
.page-products .prod-cards .eyebrow,
.page-products .prod-faq .eyebrow {
  color: var(--gold-deep);
}

/* ---------- 房间分类 ---------- */
.page-products .room-grid {
  display: grid;
  gap: 16px;
}

.page-products .room-card {
  padding: 22px 22px 18px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--prod-paper-line);
  background: #fffaf2;
  box-shadow: 0 22px 46px -38px rgba(42, 30, 18, 0.9);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.page-products .room-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 28px 54px -36px rgba(42, 30, 18, 0.85);
}

.page-products .room-card__top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.page-products .room-card__scene {
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: #8a7358;
}

.page-products .room-card__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  color: var(--paper-ink);
}

.page-products .room-card__desc {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: #5b4832;
}

.page-products .room-card__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--prod-paper-line);
}

.page-products .room-card__stats > div {
  display: grid;
  gap: 4px;
}

.page-products .room-card__stats dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: #8a7358;
}

.page-products .room-card__stats dd {
  margin: 0;
  font-size: 23px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--paper-ink);
}

/* ---------- 新手四步 ---------- */
.page-products .prod-steps {
  padding-block: clamp(52px, 7vw, 92px);
}

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

.page-products .step {
  padding: 16px 18px 4px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--prod-border);
  background: linear-gradient(180deg, rgba(26, 42, 66, 0.86), rgba(13, 22, 38, 0.94));
  transition: border-color 0.3s var(--ease);
}

.page-products .step[open] {
  border-color: rgba(232, 182, 90, 0.5);
}

.page-products .step summary {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 14px;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--white);
}

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

.page-products .step summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 17px;
  color: var(--gold);
}

.page-products .step[open] summary::after {
  content: "–";
}

.page-products .step-num {
  font-size: 24px;
  font-weight: 700;
  color: var(--gold);
}

.page-products .step p {
  margin: 0 0 14px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--muted);
}

.page-products .step-figure {
  margin: clamp(26px, 4vw, 42px) 0 0;
}

/* ---------- 卡片读法 ---------- */
.page-products .field-grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  align-items: start;
}

.page-products .field-figure {
  margin: 0;
}

.page-products .field-body .section-title {
  margin-top: 12px;
}

.page-products .field-list {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-products .field-item {
  display: grid;
  grid-template-columns: 10px 1fr;
  gap: 16px;
  padding-block: 16px;
  border-bottom: 1px solid var(--prod-paper-line);
}

.page-products .field-item:last-child {
  border-bottom: 0;
}

.page-products .field-mark {
  width: 10px;
  height: 10px;
  margin-top: 7px;
  border-radius: 3px;
}

.page-products .field-mark--teal { background: var(--teal); }
.page-products .field-mark--gold { background: var(--gold); }
.page-products .field-mark--green { background: var(--green); }
.page-products .field-mark--red { background: var(--red); }
.page-products .field-mark--yellow { background: var(--yellow); }

.page-products .field-item h3 {
  margin: 0;
  font-size: 15.5px;
  font-weight: 700;
  color: var(--paper-ink);
}

.page-products .field-item p {
  margin: 7px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: #5b4832;
}

/* ---------- 版本手记 ---------- */
.page-products .prod-version {
  padding-block: clamp(52px, 7vw, 96px);
}

.page-products .version-grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  align-items: start;
}

.page-products .version-figure {
  margin: 0;
}

.page-products .version-body .section-title {
  margin-top: 12px;
}

.page-products .version-list {
  display: grid;
  gap: 0;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  border-left: 1px solid var(--prod-border);
}

.page-products .version-list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px;
  padding: 0 0 22px 20px;
  position: relative;
}

.page-products .version-list li::before {
  content: "";
  position: absolute;
  left: -4px;
  top: 8px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gold);
}

.page-products .version-year {
  font-size: 14px;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.04em;
}

.page-products .version-list h3 {
  margin: 0;
  font-size: 15.5px;
  font-weight: 700;
  color: var(--white);
}

.page-products .version-list p {
  margin: 7px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 常见问题 ---------- */
.page-products .faq-list {
  display: grid;
  gap: 10px;
}

.page-products .faq-item {
  padding: 0 18px;
  border-radius: var(--radius-md);
  border: 1px solid var(--prod-paper-line);
  background: rgba(255, 255, 255, 0.5);
}

.page-products .faq-item[open] {
  border-color: rgba(196, 147, 60, 0.55);
}

.page-products .faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
  list-style: none;
  cursor: pointer;
  font-size: 15px;
  font-weight: 700;
  color: var(--paper-ink);
}

.page-products .faq-item summary::-webkit-details-marker {
  display: none;
}

.page-products .faq-item summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--gold-deep);
}

.page-products .faq-item[open] summary::after {
  content: "–";
}

.page-products .faq-item p {
  margin: 0 0 16px;
  max-width: 40em;
  font-size: 14px;
  line-height: 1.9;
  color: #5b4832;
}

/* ---------- 延伸入口 ---------- */
.page-products .prod-next {
  padding-block: clamp(48px, 7vw, 90px) clamp(56px, 8vw, 96px);
}

.page-products .next-links {
  display: grid;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-products .next-links a {
  display: grid;
  gap: 5px;
  padding: 18px 20px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--prod-border);
  background: var(--ink-850);
  text-decoration: none;
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease);
}

.page-products .next-links a:hover,
.page-products .next-links a:focus-visible {
  transform: translateY(-3px);
  border-color: rgba(232, 182, 90, 0.45);
}

.page-products .next-label {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--white);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-products .room-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-auto-rows: min-content;
  }

  .page-products .room-card:nth-child(2) {
    margin-top: 26px;
  }

  .page-products .room-card:nth-child(4) {
    margin-top: 26px;
  }

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

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

@media (min-width: 900px) {
  .page-products .prod-hero {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
  }

  .page-products .field-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  }

  .page-products .version-grid {
    grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
  }

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

  .page-products .step summary {
    font-size: 16.5px;
  }
}

@media (min-width: 960px) {
  .page-products .prod-device-grid {
    grid-template-columns: minmax(250px, 300px) minmax(0, 1fr);
  }

  .page-products .device-rail {
    position: sticky;
    top: calc(var(--header-h) + 30px);
  }
}

@media (min-width: 1080px) {
  .page-products .room-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }

  .page-products .room-card {
    padding: 26px 26px 20px;
  }
}

@media (max-width: 480px) {
  .page-products .stack-card {
    padding: 15px 16px 17px;
  }

  .page-products .stack-title {
    font-size: 18px;
  }

  .page-products .stack-line .mono {
    font-size: 17px;
  }

  .page-products .prod-hero-visual {
    padding-block: 6px 26px;
  }

  .page-products .hero-stack {
    min-height: 272px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .device-item,
  .page-products .room-card,
  .page-products .next-links a,
  .page-products .step {
    transition: none;
  }

  .page-products .device-item:hover,
  .page-products .room-card:hover,
  .page-products .next-links a:hover {
    transform: none;
  }
}