.page-products {
  --prod-hair: rgba(199, 154, 60, 0.3);
  --prod-ink-soft: rgba(20, 16, 14, 0.66);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.75;
  overflow-x: hidden;
}

.page-products * {
  box-sizing: border-box;
}

.page-products .shell {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

/* ---------- 首屏 ---------- */

.page-products .prod-intro {
  padding-top: 34px;
  padding-bottom: 40px;
}

.page-products .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0 10px;
  margin: 0 0 26px;
  padding: 0;
  list-style: none;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
}

.page-products .breadcrumb li + li::before {
  content: "/";
  margin-right: 10px;
  color: var(--gilt);
}

.page-products .breadcrumb a {
  color: var(--ink-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--t), border-color var(--t);
}

.page-products .breadcrumb a:hover,
.page-products .breadcrumb a:focus-visible {
  color: var(--cinnabar);
  border-bottom-color: var(--cinnabar);
}

.page-products .eyebrow {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gilt);
}

.page-products h1 {
  margin: 0 0 20px;
  max-width: 20em;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 30px;
  line-height: 1.3;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.page-products .lede {
  margin: 0 0 32px;
  max-width: 42em;
  font-size: 16px;
  color: var(--prod-ink-soft);
}

.page-products .prod-intro__keys {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0 0 32px;
  padding: 0;
  list-style: none;
  background: var(--prod-hair);
  border-top: 1px solid var(--prod-hair);
  border-bottom: 1px solid var(--prod-hair);
}

.page-products .prod-intro__keys > li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 14px;
  background: var(--paper);
}

.page-products .prod-intro__num {
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1.1;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--cinnabar);
}

.page-products .prod-intro__key {
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
}

.page-products .prod-intro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0;
}

.page-products .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  border-radius: var(--r-pill);
  font-size: 14.5px;
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: transform var(--t), background-color var(--t), color var(--t), border-color var(--t);
}

.page-products .btn--solid {
  background: var(--cinnabar);
  color: var(--paper);
  border: 1px solid var(--cinnabar);
}

.page-products .btn--solid:hover,
.page-products .btn--solid:focus-visible {
  background: var(--cinnabar-deep);
  border-color: var(--cinnabar-deep);
  transform: translateY(-2px);
}

.page-products .btn--ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--prod-hair);
}

.page-products .btn--ghost:hover,
.page-products .btn--ghost:focus-visible {
  border-color: var(--gilt);
  color: var(--cinnabar);
  transform: translateY(-2px);
}

/* ---------- 目录条 ---------- */

.page-products .prod-toc {
  position: sticky;
  top: 0;
  z-index: 5;
  background: rgba(247, 241, 230, 0.92);
  backdrop-filter: blur(6px);
  border-top: 1px solid var(--prod-hair);
  border-bottom: 1px solid var(--prod-hair);
}

.page-products .prod-toc ul {
  display: flex;
  gap: 4px;
  margin: 0 auto;
  padding: 10px var(--gutter);
  max-width: var(--shell);
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-products .prod-toc ul::-webkit-scrollbar {
  display: none;
}

.page-products .prod-toc a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 13px;
  border-radius: var(--r-pill);
  white-space: nowrap;
  font-size: 13.5px;
  color: var(--ink-soft);
  text-decoration: none;
  border: 1px solid transparent;
  transition: color var(--t), border-color var(--t), background-color var(--t);
}

.page-products .prod-toc .mono {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--gilt);
}

.page-products .prod-toc a:hover,
.page-products .prod-toc a:focus-visible {
  color: var(--cinnabar);
  border-color: var(--prod-hair);
}

.page-products .prod-toc a.is-current {
  color: var(--cinnabar);
  border-color: var(--cinnabar);
  background: rgba(191, 59, 43, 0.06);
}

/* ---------- 区块通用 ---------- */

.page-products .section {
  padding-top: 52px;
  padding-bottom: 52px;
  scroll-margin-top: 68px;
}

.page-products .section--deep {
  background: var(--paper-deep);
}

.page-products .section--night {
  background: var(--night);
  color: var(--on-night);
}

.page-products .prod-head {
  max-width: 46em;
  margin-bottom: 34px;
}

.page-products .prod-head h2 {
  margin: 0 0 16px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 24px;
  line-height: 1.35;
  letter-spacing: 0.01em;
}

.page-products .prod-head__text {
  margin: 0;
  font-size: 15.5px;
  color: var(--prod-ink-soft);
}

.page-products .prod-head--night h2 {
  color: var(--paper);
}

.page-products .prod-head--night .prod-head__text {
  color: var(--on-night-soft);
}

/* ---------- 图片容器 ---------- */

.page-products .figure {
  margin: 0 0 30px;
}

.page-products .figure__media {
  position: relative;
  overflow: hidden;
  border-radius: var(--r-lg);
  border: 1px solid var(--prod-hair);
  background:
    radial-gradient(circle at 22% 18%, rgba(232, 206, 140, 0.35), transparent 58%),
    radial-gradient(circle at 82% 76%, rgba(168, 199, 193, 0.32), transparent 60%),
    var(--paper-deep);
}

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

.page-products .figure__media--wide {
  aspect-ratio: 2 / 1;
}

.page-products .figure__media--square {
  aspect-ratio: 1 / 1;
}

.page-products .figure__caption {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.page-products .section--night .figure__caption {
  color: var(--on-night-soft);
}

.page-products .figure--panorama {
  margin-bottom: 36px;
}

.page-products .figure--network .figure__media {
  border-color: var(--hairline-night);
  background:
    radial-gradient(circle at 30% 30%, rgba(62, 127, 118, 0.4), transparent 62%),
    radial-gradient(circle at 76% 68%, rgba(199, 154, 60, 0.28), transparent 60%),
    var(--night-soft);
}

/* ---------- 四类全景 ---------- */

.page-products .prod-quad {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--prod-hair);
}

.page-products .prod-quad__item {
  position: relative;
  padding: 22px 0 22px 46px;
  border-bottom: 1px solid var(--prod-hair);
}

.page-products .prod-quad__idx {
  position: absolute;
  left: 0;
  top: 24px;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--gilt);
}

.page-products .prod-quad__name {
  margin: 0 0 4px;
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
}

.page-products .prod-quad__count {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cinnabar);
}

.page-products .prod-quad__desc {
  margin: 0;
  font-size: 14.5px;
  color: var(--prod-ink-soft);
}

/* ---------- 左图右表 ---------- */

.page-products .prod-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  align-items: start;
}

.page-products .prod-split__art .figure {
  margin-bottom: 0;
}

.page-products .prod-split__art .figure__media {
  border-radius: var(--r-lg);
}

/* ---------- 入口清单 ---------- */

.page-products .entry-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--prod-hair);
}

.page-products .section--deep .entry-list {
  border-top-color: rgba(199, 154, 60, 0.4);
}

.page-products .entry {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "no name"
    "scene scene";
  gap: 4px 14px;
  padding: 17px 14px 17px 14px;
  border-bottom: 1px solid var(--prod-hair);
  transition: background-color var(--t), box-shadow var(--t), transform var(--t);
}

.page-products .section--deep .entry {
  border-bottom-color: rgba(199, 154, 60, 0.4);
}

.page-products .entry__no {
  grid-area: no;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--gilt);
  padding-top: 3px;
}

.page-products .entry__name {
  grid-area: name;
  font-size: 15.5px;
  font-weight: 500;
  color: var(--ink);
}

.page-products .entry__scene {
  grid-area: scene;
  font-size: 14px;
  line-height: 1.7;
  color: var(--prod-ink-soft);
}

.page-products .entry:hover,
.page-products .entry:focus-within {
  background: rgba(199, 154, 60, 0.1);
  box-shadow: inset 3px 0 0 var(--cinnabar);
  transform: translateX(2px);
}

.page-products .entry:hover .entry__no,
.page-products .entry:focus-within .entry__no {
  color: var(--cinnabar);
}

.page-products .entry-list--wide {
  max-width: 64em;
}

/* ---------- 折叠面板 ---------- */

.page-products .prod-fold {
  margin-top: 30px;
}

.page-products .prod-fold__title {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
}

.page-products .fold {
  border-top: 1px solid var(--prod-hair);
}

.page-products .fold__item {
  border-bottom: 1px solid var(--prod-hair);
}

.page-products .fold__summary {
  position: relative;
  padding: 15px 34px 15px 0;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  color: var(--ink);
  transition: color var(--t);
}

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

.page-products .fold__summary::after {
  content: "+";
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--gilt);
  transition: transform var(--t), color var(--t);
}

.page-products .fold__item[open] .fold__summary::after {
  content: "−";
  color: var(--cinnabar);
}

.page-products .fold__summary:hover,
.page-products .fold__summary:focus-visible {
  color: var(--cinnabar);
}

.page-products .fold__body {
  padding: 0 0 18px;
}

.page-products .fold__body p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--prod-ink-soft);
}

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

.page-products .tag {
  padding: 5px 13px;
  border-radius: var(--r-pill);
  border: 1px solid var(--prod-hair);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--ink);
  background: var(--paper);
}

.page-products .tag--jade {
  border-color: rgba(62, 127, 118, 0.5);
  color: var(--jade);
  background: rgba(168, 199, 193, 0.24);
}

/* ---------- 两步说明卡 ---------- */

.page-products .prod-note {
  margin-top: 26px;
  padding: 22px 20px;
  border-radius: var(--r-md);
  border: 1px solid var(--prod-hair);
  background: var(--paper-deep);
  box-shadow: var(--shadow-plate);
}

.page-products .prod-note__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  color: var(--cinnabar);
}

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

.page-products .prod-note__steps li {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 10px;
  font-size: 14.5px;
  color: var(--ink);
}

.page-products .prod-note__steps .mono {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gilt);
  padding-top: 3px;
}

.page-products .prod-note__tail {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--prod-hair);
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--prod-ink-soft);
}

/* ---------- 归档条 ---------- */

.page-products .prod-archive-strip {
  margin-top: 26px;
  padding: 20px 20px 22px;
  border-left: 3px solid var(--gilt);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  background: rgba(232, 206, 140, 0.22);
}

.page-products .prod-archive-strip__title {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.page-products .prod-archive-strip__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--prod-ink-soft);
}

/* ---------- 跨端同步 ---------- */

.page-products .prod-sync {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

.page-products .prod-sync__title {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  color: var(--gilt-light);
}

.page-products .prod-sync__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--hairline-night);
}

.page-products .prod-sync__list li {
  position: relative;
  padding: 13px 0 13px 20px;
  border-bottom: 1px solid var(--hairline-night);
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--on-night);
}

.page-products .prod-sync__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 22px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--jade-light);
}

/* ---------- 推荐路径 ---------- */

.page-products .prod-path {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-products .prod-path__step {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 24px 20px 22px;
  border-radius: var(--r-lg);
  border: 1px solid var(--prod-hair);
  background: var(--paper-deep);
  box-shadow: var(--shadow-plate);
}

.page-products .prod-path__no {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--gilt);
  margin-bottom: 10px;
}

.page-products .prod-path__name {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
}

.page-products .prod-path__text {
  margin: 0 0 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--prod-ink-soft);
  flex: 1 1 auto;
}

.page-products .prod-path__link {
  align-self: flex-start;
  font-size: 14px;
  color: var(--cinnabar);
  text-decoration: none;
  border-bottom: 1px solid rgba(191, 59, 43, 0.4);
  transition: border-color var(--t), color var(--t);
}

.page-products .prod-path__link:hover,
.page-products .prod-path__link:focus-visible {
  color: var(--cinnabar-deep);
  border-bottom-color: var(--cinnabar-deep);
}

/* ---------- 求助链接 ---------- */

.page-products .prod-help {
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--prod-hair);
}

.page-products .prod-help__title {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 700;
}

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

.page-products .prod-help__links a {
  display: inline-block;
  font-size: 14.5px;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--prod-hair);
  padding-bottom: 2px;
  transition: color var(--t), border-color var(--t);
}

.page-products .prod-help__links a:hover,
.page-products .prod-help__links a:focus-visible {
  color: var(--cinnabar);
  border-bottom-color: var(--cinnabar);
}

/* ---------- 焦点可达 ---------- */

.page-products a:focus-visible,
.page-products summary:focus-visible {
  outline: 2px solid var(--cinnabar);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- 窄屏微调 ---------- */

@media (max-width: 30rem) {
  .page-products h1 {
    font-size: 26px;
  }

  .page-products .prod-intro__num {
    font-size: 22px;
  }

  .page-products .prod-quad__item {
    padding-left: 38px;
  }

  .page-products .prod-quad__idx {
    font-size: 13px;
  }
}

/* ---------- 中屏 ---------- */

@media (min-width: 48rem) {
  .page-products .prod-intro {
    padding-top: 48px;
    padding-bottom: 52px;
  }

  .page-products h1 {
    font-size: 38px;
  }

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

  .page-products .prod-intro__num {
    font-size: 30px;
  }

  .page-products .section {
    padding-top: 72px;
    padding-bottom: 72px;
  }

  .page-products .prod-head h2 {
    font-size: 28px;
  }

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

  .page-products .prod-quad__item {
    padding: 26px 26px 26px 54px;
    border-right: 1px solid var(--prod-hair);
  }

  .page-products .prod-quad__item:nth-child(2n) {
    border-right: none;
  }

  .page-products .entry {
    grid-template-columns: 92px minmax(0, 0.95fr) minmax(0, 1.15fr);
    grid-template-areas: "no name scene";
    align-items: baseline;
    gap: 22px;
    padding: 18px 14px;
  }

  .page-products .entry__no {
    padding-top: 0;
  }

  .page-products .entry__scene {
    font-size: 13.5px;
  }

  .page-products .prod-note {
    display: grid;
    grid-template-columns: 1fr;
  }

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

  .page-products .prod-sync {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 40px;
  }
}

/* ---------- 桌面 ---------- */

@media (min-width: 62rem) {
  .page-products .prod-intro {
    padding-top: 60px;
    padding-bottom: 62px;
  }

  .page-products h1 {
    font-size: 46px;
  }

  .page-products .lede {
    font-size: 17px;
  }

  .page-products .section {
    padding-top: 88px;
    padding-bottom: 88px;
  }

  .page-products .prod-head h2 {
    font-size: 32px;
  }

  .page-products .prod-split {
    grid-template-columns: minmax(0, 0.76fr) minmax(0, 1.24fr);
    gap: 46px;
  }

  .page-products .prod-split__art {
    position: sticky;
    top: 84px;
  }

  .page-products .prod-split--flip .prod-split__art {
    grid-column: 1;
    grid-row: 1;
  }

  .page-products .prod-split--flip .prod-split__body {
    grid-column: 2;
    grid-row: 1;
  }

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

  .page-products .prod-quad__item {
    padding: 30px 24px 30px 54px;
    border-right: 1px solid var(--prod-hair);
  }

  .page-products .prod-quad__item:nth-child(2n) {
    border-right: 1px solid var(--prod-hair);
  }

  .page-products .prod-quad__item:last-child {
    border-right: none;
  }
}

/* ---------- 减少动效偏好 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-products .entry,
  .page-products .btn,
  .page-products .prod-toc a,
  .page-products .fold__summary::after {
    transition: none;
  }

  .page-products .entry:hover,
  .page-products .entry:focus-within,
  .page-products .btn:hover,
  .page-products .btn:focus-visible {
    transform: none;
  }
}
</main>