.page-products {
  background: var(--y97-night);
  color: var(--y97-mist);
}

.page-products [hidden] {
  display: none !important;
}

.page-products .y97-container {
  width: 100%;
}

/* ===== 首屏 ===== */
.pf-hero {
  padding-block: clamp(1.75rem, 3.5vw, 3rem) clamp(2.5rem, 5vw, 4.5rem);
  background:
    radial-gradient(circle at 82% 12%, rgba(91, 141, 239, 0.16), transparent 46%),
    radial-gradient(circle at 8% 88%, rgba(244, 201, 93, 0.10), transparent 42%),
    var(--y97-night);
}

.pf-hero__grid {
  display: grid;
  gap: clamp(1.75rem, 3.5vw, 2.75rem);
  align-items: center;
}

.pf-hero__copy .y97-eyebrow {
  margin-bottom: 0.85rem;
}

.pf-hero__copy .y97-h1 {
  margin: 0 0 1.1rem;
  max-width: 15em;
}

.pf-hero__copy .y97-lead {
  max-width: 32em;
  color: var(--y97-mist);
  opacity: 0.88;
}

.pf-hero__pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: clamp(1.25rem, 2.5vw, 1.9rem);
}

.pf-frame {
  position: relative;
  margin: 0;
  padding: 9px;
  border: 1px solid rgba(145, 167, 196, 0.32);
  border-radius: var(--y97-radius);
  background: linear-gradient(165deg, rgba(16, 42, 67, 0.72), rgba(8, 23, 38, 0.24));
}

.pf-frame::before,
.pf-frame::after {
  content: "";
  position: absolute;
  width: 20px;
  height: 20px;
  border: 2px solid var(--y97-yellow);
  pointer-events: none;
}

.pf-frame::before {
  top: -1px;
  left: -1px;
  border-right: 0;
  border-bottom: 0;
  border-top-left-radius: var(--y97-radius);
}

.pf-frame::after {
  bottom: -1px;
  right: -1px;
  border-left: 0;
  border-top: 0;
  border-bottom-right-radius: var(--y97-radius);
}

.pf-frame img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: calc(var(--y97-radius) - 10px);
  object-fit: cover;
}

/* ===== 通用章节 ===== */
.pf-section {
  padding-block: clamp(2.25rem, 5vw, 4.5rem);
}

.pf-section__head {
  max-width: 38em;
  margin-bottom: clamp(1.5rem, 3vw, 2.25rem);
}

.pf-section__head .y97-eyebrow {
  margin-bottom: 0.75rem;
}

.pf-section__head .y97-h2 {
  margin: 0 0 0.85rem;
}

.pf-prose {
  color: var(--y97-line);
  font-size: 1rem;
  line-height: 1.8;
  margin: 0;
}

.pf-section--light {
  background: var(--y97-mist);
  color: var(--y97-night);
  border-radius: var(--y97-radius);
  margin-inline: clamp(0px, 1.5vw, 24px);
}

.pf-section--light .y97-h2,
.pf-section--light .y97-eyebrow,
.pf-section--light .pf-prose {
  color: var(--y97-night);
}

.pf-section--light .pf-prose {
  opacity: 0.82;
}

.pf-section--deep {
  background: var(--y97-night-2);
  border-block: 1px solid rgba(145, 167, 196, 0.18);
}

/* ===== 五类入口图例 ===== */
.pf-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.pf-legend__tab {
  appearance: none;
  cursor: pointer;
  font-family: var(--y97-sans);
  font-weight: 700;
  font-size: 0.875rem;
  letter-spacing: 0.01em;
  padding: 0.55rem 1.05rem;
  border-radius: var(--y97-pill);
  border: 1px solid rgba(145, 167, 196, 0.38);
  background: transparent;
  color: var(--y97-mist);
  transition:
    background var(--y97-dur) var(--y97-ease),
    color var(--y97-dur) var(--y97-ease),
    border-color var(--y97-dur) var(--y97-ease);
}

.pf-legend__tab:hover {
  border-color: var(--y97-yellow);
}

.pf-legend__tab[aria-selected="true"] {
  background: var(--y97-yellow);
  border-color: var(--y97-yellow);
  color: var(--y97-night);
}

.pf-legend__tab:focus-visible {
  outline: 2px solid var(--y97-blue);
  outline-offset: 3px;
}

.pf-panel {
  background: var(--y97-night-2);
  border: 1px solid rgba(145, 167, 196, 0.18);
  border-radius: var(--y97-radius);
  padding: clamp(1.25rem, 2.8vw, 2rem);
  box-shadow: inset 0 1px 0 rgba(245, 241, 230, 0.06);
}

.pf-panel p {
  margin: 0;
  color: var(--y97-line);
  line-height: 1.8;
  max-width: 40em;
}

.pf-panel__title {
  margin: 0 0 0.75rem;
  font-family: var(--y97-serif);
  font-weight: 700;
  font-size: clamp(1.1rem, 1.7vw, 1.4rem);
  color: var(--y97-white);
  line-height: 1.4;
}

.pf-panel__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.15rem;
}

.pf-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--y97-mono);
  font-size: 0.75rem;
  padding: 0.32rem 0.75rem;
  border-radius: var(--y97-pill);
  background: rgba(245, 241, 230, 0.07);
  border: 1px solid rgba(145, 167, 196, 0.28);
  color: var(--y97-mist);
  white-space: nowrap;
}

.pf-chip::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--y97-blue);
  flex: none;
}

.pf-chip--green::before { background: var(--y97-green); }
.pf-chip--yellow::before { background: var(--y97-yellow); }

.pf-wide {
  margin: clamp(2rem, 4vw, 3rem) 0 0;
}

.pf-wide img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--y97-radius);
  object-fit: cover;
}

.pf-wide figcaption {
  margin-top: 0.85rem;
  font-size: 0.875rem;
  color: var(--y97-line);
  line-height: 1.7;
}

/* ===== 适配清单 ===== */
.pf-list-head {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.25rem);
  margin-bottom: clamp(1.75rem, 3.5vw, 2.5rem);
  align-items: center;
}

.pf-list-eyebrow {
  margin: 0 0 0.7rem;
  font-family: var(--y97-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #3f5872;
}

.pf-list-head .y97-h2 {
  margin: 0 0 0.9rem;
}

.pf-list-head__media {
  margin: 0;
}

.pf-list-head__media img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--y97-radius);
  object-fit: cover;
}

.pf-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: calc(var(--y97-radius) - 8px);
  border: 1px solid rgba(8, 23, 38, 0.14);
  background: rgba(255, 255, 255, 0.55);
}

.pf-table-wrap:focus-visible {
  outline: 2px solid var(--y97-blue);
  outline-offset: 3px;
}

.pf-table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

.pf-table thead th {
  text-align: left;
  font-family: var(--y97-mono);
  font-weight: 600;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  padding: 0.9rem 0.85rem;
  color: #3f5872;
  border-bottom: 1.5px solid rgba(8, 23, 38, 0.6);
  white-space: nowrap;
}

.pf-table tbody td {
  padding: 1rem 0.85rem;
  border-bottom: 1px solid rgba(8, 23, 38, 0.13);
  vertical-align: middle;
  color: var(--y97-night);
}

.pf-table tbody tr:last-child td {
  border-bottom: 0;
}

.pf-table tbody tr:hover {
  background: rgba(244, 201, 93, 0.16);
}

.pf-table .num {
  text-align: right;
  font-family: var(--y97-mono);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.pf-table .env {
  font-family: var(--y97-mono);
  font-size: 0.875rem;
  white-space: nowrap;
}

.pf-table-note {
  margin: 1.15rem 0 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: #3f5872;
  max-width: 52em;
}

/* ===== 收藏页夹 ===== */
.pf-books-grid {
  display: grid;
  gap: clamp(1.75rem, 3.5vw, 2.75rem);
  align-items: start;
}

.pf-books-media {
  margin: 0;
}

.pf-books-media img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--y97-radius);
  object-fit: cover;
}

.pf-books-copy .y97-eyebrow {
  margin-bottom: 0.7rem;
}

.pf-books-copy .y97-h2 {
  margin: 0 0 0.9rem;
}

.pf-books {
  margin-top: clamp(1.25rem, 2.5vw, 1.75rem);
  border-top: 1px solid rgba(145, 167, 196, 0.28);
}

.pf-book {
  border-bottom: 1px solid rgba(145, 167, 196, 0.28);
}

.pf-book__btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.15rem 0.15rem;
  background: none;
  border: 0;
  color: var(--y97-mist);
  font-family: var(--y97-sans);
  font-weight: 700;
  font-size: clamp(1rem, 1.4vw, 1.1rem);
  text-align: left;
  cursor: pointer;
  transition: color var(--y97-dur) var(--y97-ease);
}

.pf-book__btn:hover {
  color: var(--y97-yellow);
}

.pf-book__btn:focus-visible {
  outline: 2px solid var(--y97-blue);
  outline-offset: 2px;
  border-radius: 6px;
}

.pf-book__sign {
  color: var(--y97-yellow);
  margin-right: 0.65rem;
}

.pf-book__mark {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
}

.pf-book__mark::before,
.pf-book__mark::after {
  content: "";
  position: absolute;
  background: var(--y97-yellow);
  border-radius: 2px;
  transition: transform var(--y97-dur) var(--y97-ease), opacity var(--y97-dur) var(--y97-ease);
}

.pf-book__mark::before {
  top: 6px;
  left: 0;
  width: 14px;
  height: 2px;
}

.pf-book__mark::after {
  top: 0;
  left: 6px;
  width: 2px;
  height: 14px;
}

.pf-book__btn[aria-expanded="true"] .pf-book__mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.pf-book__panel {
  padding: 0 0.15rem 1.35rem;
}

.pf-book__panel p {
  margin: 0;
  color: var(--y97-line);
  line-height: 1.8;
  max-width: 40em;
}

.pf-books-foot {
  margin: 1.25rem 0 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--y97-line);
  border-left: 3px solid var(--y97-yellow);
  padding-left: 0.9rem;
}

/* ===== 约主页提醒 ===== */
.pf-nudge {
  display: grid;
  gap: clamp(1rem, 2.5vw, 2rem);
  align-items: start;
}

.pf-nudge__mark {
  font-family: var(--y97-serif);
  font-weight: 700;
  font-size: clamp(4.5rem, 12vw, 9rem);
  line-height: 0.78;
  color: transparent;
  -webkit-text-stroke: 1.5px rgba(244, 201, 93, 0.55);
  letter-spacing: -0.04em;
  user-select: none;
}

.pf-nudge__body .y97-eyebrow {
  margin-bottom: 0.7rem;
}

.pf-nudge__body .y97-h2 {
  margin: 0 0 0.9rem;
}

.pf-nudge__list {
  list-style: none;
  margin: 1.25rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.65rem;
}

.pf-nudge__list li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.9375rem;
  color: var(--y97-mist);
}

.pf-nudge__list .pf-dot {
  flex: none;
}

.pf-nudge__body .y97-btn {
  margin-top: clamp(1.25rem, 2.5vw, 1.75rem);
}

/* ===== 三步判断 ===== */
.pf-steps-grid {
  display: grid;
  gap: clamp(1.75rem, 3.5vw, 2.75rem);
  align-items: start;
}

.pf-steps-copy .y97-eyebrow {
  margin-bottom: 0.7rem;
}

.pf-steps-copy .y97-h2 {
  margin: 0 0 0.9rem;
}

.pf-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  counter-reset: pfstep;
}

.pf-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  padding: 1.2rem 0;
  border-top: 1px solid rgba(145, 167, 196, 0.24);
}

.pf-step:last-child {
  border-bottom: 1px solid rgba(145, 167, 196, 0.24);
}

.pf-step__num {
  font-family: var(--y97-mono);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--y97-yellow);
  padding-top: 0.2rem;
  letter-spacing: 0.06em;
}

.pf-step__body h3 {
  margin: 0 0 0.4rem;
  font-family: var(--y97-serif);
  font-size: clamp(1.05rem, 1.5vw, 1.25rem);
  font-weight: 700;
  color: var(--y97-white);
}

.pf-step__body p {
  margin: 0;
  color: var(--y97-line);
  line-height: 1.8;
  max-width: 38em;
}

/* ===== 更新联动 ===== */
.pf-link-row {
  display: grid;
  gap: clamp(1.25rem, 3vw, 2.5rem);
  align-items: center;
}

.pf-link-row .y97-h2 {
  margin: 0 0 0.9rem;
}

.pf-link-row__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* ===== 响应式 ===== */
@media (min-width: 640px) {
  .pf-nudge {
    grid-template-columns: auto 1fr;
    align-items: center;
  }

  .pf-nudge__mark {
    justify-self: start;
  }
}

@media (min-width: 900px) {
  .pf-hero__grid {
    grid-template-columns: 5fr 7fr;
    align-items: center;
  }

  .pf-list-head {
    grid-template-columns: 7fr 5fr;
  }

  .pf-books-grid {
    grid-template-columns: 5fr 7fr;
  }

  .pf-steps-grid {
    grid-template-columns: 3fr 9fr;
  }

  .pf-link-row {
    grid-template-columns: 1fr auto;
  }

  .pf-link-row__acts {
    justify-content: flex-end;
    flex-direction: column;
    align-items: stretch;
  }
}

@media (max-width: 520px) {
  .pf-legend__tab {
    font-size: 0.8125rem;
    padding: 0.5rem 0.85rem;
  }

  .pf-table {
    min-width: 640px;
    font-size: 0.875rem;
  }

  .pf-table thead th,
  .pf-table tbody td {
    padding: 0.8rem 0.65rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .pf-legend__tab,
  .pf-book__btn,
  .pf-book__mark::before,
  .pf-book__mark::after {
    transition: none;
  }
}
<<<END>>>