.page-products {
  --pp-card-bg: #FBF4E7;
  --pp-line: rgba(27, 21, 18, 0.14);
  --pp-line-strong: rgba(27, 21, 18, 0.22);
  background: var(--cream);
  color: var(--text-ink);
  font-family: var(--font-body);
  font-size: var(--step-body);
  line-height: 1.75;
}

.page-products h1,
.page-products h2,
.page-products h3 {
  margin: 0;
  font-family: var(--font-display);
  line-height: 1.2;
  letter-spacing: 0.01em;
}

.page-products p {
  margin: 0 0 0.85em;
}

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

.page-products a {
  color: inherit;
}

.page-products .pp-crumb {
  padding: 14px 0 4px;
  background: var(--cream);
}

/* ---------- 首屏 ---------- */
.page-products .pp-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(30px, 5vw, 58px) 0 clamp(44px, 7vw, 86px);
  background: var(--ink);
  color: var(--on-ink);
  border-bottom: 8px solid var(--gold);
}

.page-products .pp-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(90deg, rgba(217, 162, 74, 0.08) 0 1px, transparent 1px 76px),
    repeating-linear-gradient(0deg, rgba(217, 162, 74, 0.06) 0 1px, transparent 1px 76px);
  pointer-events: none;
}

.page-products .pp-hero::after {
  content: "";
  position: absolute;
  top: -60px;
  right: -80px;
  width: 300px;
  height: 300px;
  border: 2px solid rgba(217, 162, 74, 0.25);
  border-radius: 50%;
  pointer-events: none;
}

.page-products .pp-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

.page-products .pp-hero__kicker {
  margin: 0 0 14px;
  font-size: var(--step-index);
  letter-spacing: 0.22em;
  color: var(--gold);
}

.page-products .pp-hero__title {
  position: relative;
  display: inline-block;
  font-size: clamp(2.5rem, 8.5vw, 4.4rem);
  font-weight: 900;
  color: var(--cream);
}

.page-products .pp-hero__title::after {
  content: "";
  display: block;
  width: 72px;
  height: 4px;
  margin-top: 16px;
  background: var(--vermilion);
}

.page-products .pp-hero__lead {
  max-width: 44ch;
  margin-top: 22px;
  color: var(--on-ink);
}

.page-products .pp-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-products .pp-hero__aside {
  padding-top: 20px;
  border-top: 1px solid var(--line-gold);
}

.page-products .pp-hero__aside-title {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gold-lite);
}

.page-products .pp-hero__nav {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-products .pp-hero__nav li + li {
  border-top: 1px dashed rgba(217, 162, 74, 0.18);
}

.page-products .pp-hero__nav a {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 9px 0;
  font-size: 0.9375rem;
  color: var(--on-ink);
  text-decoration: none;
  transition: color 180ms var(--ease);
}

.page-products .pp-hero__nav a .mono {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.page-products .pp-hero__nav a:hover,
.page-products .pp-hero__nav a:focus-visible {
  color: var(--gold-lite);
}

/* ---------- 章节 ---------- */
.page-products .pp-section {
  padding: clamp(44px, 7vw, 88px) 0;
}

.page-products .pp-section--ink {
  background: var(--ink-2);
  color: var(--on-ink);
}

.page-products .pp-section--deep {
  background: var(--cream-2);
}

.page-products .pp-head {
  margin-bottom: clamp(22px, 3.6vw, 38px);
}

.page-products .pp-head__num {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 12px;
  font-size: var(--step-index);
  letter-spacing: 0.2em;
  color: var(--vermilion);
}

.page-products .pp-head__num::before {
  content: "";
  width: 28px;
  height: 2px;
  flex: none;
  background: currentColor;
}

.page-products .pp-head__title {
  font-size: var(--step-chapter);
  font-weight: 700;
}

.page-products .pp-head__desc {
  max-width: 62ch;
  margin-top: 12px;
  color: var(--muted);
}

.page-products .pp-head--on-ink .pp-head__num {
  color: var(--gold);
}

.page-products .pp-head--on-ink .pp-head__title {
  color: var(--cream);
}

.page-products .pp-head--on-ink .pp-head__desc {
  color: var(--on-ink-dim);
}

/* ---------- 01 三块面板 ---------- */
.page-products .pp-cards {
  display: grid;
  gap: 18px;
}

.page-products .pp-card {
  position: relative;
  padding: 30px 22px 22px;
  background: var(--pp-card-bg);
  border: 1px solid var(--pp-line);
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 0 100%);
  transition: transform 180ms var(--ease), box-shadow 180ms var(--ease), border-color 180ms var(--ease);
}

.page-products .pp-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 6px;
  background: var(--vermilion);
}

.page-products .pp-card--jade::before {
  background: var(--jade);
}

.page-products .pp-card--gold::before {
  background: var(--gold);
}

.page-products .pp-card:hover {
  transform: translateY(-4px);
  border-color: rgba(217, 162, 74, 0.7);
  box-shadow: 0 14px 28px rgba(20, 16, 14, 0.14);
}

.page-products .pp-card__tag {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-products .pp-card__title {
  margin-bottom: 12px;
  font-size: var(--step-sub);
  font-weight: 700;
}

.page-products .pp-card p {
  font-size: 0.9688rem;
  color: #3A2F27;
}

.page-products .pp-card__meta {
  margin: 16px 0 0;
  padding-top: 10px;
  border-top: 1px dashed var(--pp-line-strong);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--vermilion);
}

.page-products .pp-card__link {
  display: inline-block;
  margin-top: 14px;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--vermilion);
  text-decoration: none;
  border-bottom: 2px solid rgba(200, 41, 29, 0.25);
  transition: border-color 180ms var(--ease), color 180ms var(--ease);
}

.page-products .pp-card__link:hover,
.page-products .pp-card__link:focus-visible {
  color: var(--vermilion-hot);
  border-bottom-color: var(--vermilion-hot);
}

/* ---------- 02 设备标签 ---------- */
.page-products .pp-tags__layout {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}

.page-products .pp-taggroup + .pp-taggroup {
  margin-top: 20px;
}

.page-products .pp-taggroup__title {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gold-lite);
}

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

.page-products .pp-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 13px;
  border: 1px solid var(--gold);
  border-radius: 999px;
  background: rgba(217, 162, 74, 0.06);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--cream);
  transition: background 180ms var(--ease), transform 180ms var(--ease);
}

.page-products .pp-tag .mono {
  font-size: 11px;
  color: var(--gold);
}

.page-products .pp-tag--red {
  border-color: rgba(229, 67, 42, 0.72);
}

.page-products .pp-tag--red .mono {
  color: var(--vermilion-hot);
}

.page-products .pp-tag--jade {
  border-color: rgba(110, 178, 150, 0.68);
}

.page-products .pp-tag--jade .mono {
  color: #8FCBB2;
}

.page-products .pp-tag:hover {
  background: rgba(217, 162, 74, 0.16);
  transform: translateY(-2px);
}

.page-products .pp-tags__note {
  margin-top: 22px;
  padding-left: 14px;
  border-left: 2px solid var(--gold);
  font-size: 0.875rem;
  color: var(--on-ink-dim);
}

/* ---------- 图片 ---------- */
.page-products .pp-figure {
  margin: 0;
}

.page-products .pp-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--pp-line);
  background: var(--ink);
}

.page-products .pp-section--ink .pp-figure img {
  border-color: var(--line-gold);
}

.page-products .pp-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

.page-products .pp-section--ink .pp-figure figcaption {
  color: var(--on-ink-dim);
}

.page-products .pp-figure--tags {
  align-self: start;
}

/* ---------- 03 关卡索引 ---------- */
.page-products .pp-index__layout {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

.page-products .pp-figure--tree {
  align-self: start;
}

.page-products .pp-tree {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .pp-tree__group {
  position: relative;
  padding: 14px 0 14px 18px;
  border-left: 1px solid rgba(27, 21, 18, 0.2);
}

.page-products .pp-tree__group + .pp-tree__group {
  border-top: 1px solid var(--pp-line);
}

.page-products .pp-tree__group::before {
  content: "";
  position: absolute;
  top: 24px;
  left: -5px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--gold);
}

.page-products .pp-tree__label {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0;
  font-weight: 600;
  font-size: 1rem;
}

.page-products .pp-tree__label .mono {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--vermilion);
}

.page-products .pp-tree__children {
  display: grid;
  gap: 4px;
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
}

.page-products .pp-tree__children li {
  position: relative;
  padding-left: 16px;
  font-size: 0.9063rem;
  color: var(--muted);
}

.page-products .pp-tree__children li::before {
  content: "–";
  position: absolute;
  left: 0;
  color: var(--gold);
}

/* ---------- 04 版本对照表 ---------- */
.page-products .pp-table__layout {
  display: grid;
  gap: 24px;
}

.page-products .pp-table__wrap {
  overflow-x: auto;
  border: 1px solid var(--pp-line-strong);
  background: var(--pp-card-bg);
  -webkit-overflow-scrolling: touch;
}

.page-products .pp-table__wrap:focus-visible {
  outline: 2px solid var(--vermilion);
  outline-offset: 2px;
}

.page-products .pp-table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  font-size: 0.9063rem;
}

.page-products .pp-table__caption {
  caption-side: top;
  padding: 11px 14px;
  text-align: left;
  background: var(--ink);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold-lite);
}

.page-products .pp-table th {
  padding: 12px 14px;
  text-align: left;
  background: var(--ink-2);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--cream);
  white-space: nowrap;
}

.page-products .pp-table td {
  padding: 12px 14px;
  border-top: 1px solid rgba(27, 21, 18, 0.1);
  vertical-align: top;
  color: var(--text-ink);
}

.page-products .pp-table tbody tr:nth-child(even) {
  background: rgba(226, 211, 188, 0.5);
}

.page-products .pp-table tbody tr:hover {
  background: rgba(217, 162, 74, 0.22);
}

.page-products .pp-table th:first-child,
.page-products .pp-table td:first-child {
  position: sticky;
  left: 0;
  z-index: 2;
  border-right: 1px solid var(--pp-line-strong);
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

.page-products .pp-table th:first-child {
  background: var(--ink);
  color: var(--gold-lite);
}

.page-products .pp-table td:first-child {
  background: var(--pp-card-bg);
  font-weight: 600;
  color: var(--vermilion);
}

.page-products .pp-table tbody tr:nth-child(even) td:first-child {
  background: var(--cream-2);
}

.page-products .pp-table td.pp-diff {
  background: var(--jade);
  color: #E8F3ED;
  font-size: 0.8438rem;
}

.page-products .pp-table__hint {
  margin-top: 10px;
  font-size: 13px;
  color: var(--muted);
}

.page-products .pp-legend {
  padding: 18px;
  border: 1px solid var(--pp-line-strong);
  background: var(--pp-card-bg);
}

.page-products .pp-legend__title {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--vermilion);
}

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

.page-products .pp-legend a {
  display: inline-block;
  font-weight: 600;
  font-size: 0.9375rem;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-products .pp-legend a:hover,
.page-products .pp-legend a:focus-visible {
  color: var(--vermilion);
  border-bottom-color: var(--vermilion);
}

.page-products .pp-legend span {
  display: block;
  margin-top: 2px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

.page-products .pp-legend__note {
  margin: 16px 0 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--pp-line-strong);
  font-size: 13px;
  color: var(--muted);
}

.page-products .pp-figure--table {
  max-width: 520px;
  margin: clamp(26px, 4vw, 44px) auto 0;
}

/* ---------- 05 四步 ---------- */
.page-products .pp-steps {
  position: relative;
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .pp-step {
  position: relative;
  z-index: 1;
}

.page-products .pp-step__box {
  border: 1px solid var(--line-gold);
  background: rgba(20, 16, 14, 0.55);
  padding: 4px 16px 8px;
  transition: border-color 180ms var(--ease), background 180ms var(--ease);
}

.page-products .pp-step__box[open] {
  border-color: rgba(217, 162, 74, 0.6);
  background: rgba(20, 16, 14, 0.85);
}

.page-products .pp-step__summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  cursor: pointer;
  list-style: none;
}

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

.page-products .pp-step__summary::after {
  content: "＋";
  margin-left: auto;
  font-size: 15px;
  color: var(--gold);
}

.page-products .pp-step__box[open] .pp-step__summary::after {
  content: "－";
}

.page-products .pp-step__num {
  display: grid;
  place-items: center;
  flex: none;
  width: 42px;
  height: 42px;
  border: 2px solid var(--gold);
  border-radius: 50%;
  background: var(--ink);
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--gold-lite);
  transition: background 180ms var(--ease), border-color 180ms var(--ease), color 180ms var(--ease);
}

.page-products .pp-step__box[open] .pp-step__num {
  background: var(--vermilion);
  border-color: var(--vermilion-hot);
  color: var(--cream);
}

.page-products .pp-step__name {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--cream);
}

.page-products .pp-step__body {
  padding: 12px 0 6px;
  margin-top: 2px;
  border-top: 1px dashed var(--line-gold);
  font-size: 0.9063rem;
  color: var(--on-ink);
}

.page-products .pp-step__pit {
  margin-top: 10px;
  padding: 8px 12px;
  border-left: 3px solid var(--gold);
  background: rgba(217, 162, 74, 0.1);
  font-size: 0.875rem;
  color: var(--gold-lite);
}

.page-products .pp-figure--steps {
  margin-top: clamp(26px, 4vw, 44px);
}

.page-products .pp-steps__more {
  margin-top: 20px;
  font-size: 0.9375rem;
  color: var(--on-ink-dim);
}

.page-products .pp-steps__more a {
  color: var(--gold-lite);
  text-decoration: none;
  border-bottom: 1px solid rgba(240, 207, 142, 0.5);
}

.page-products .pp-steps__more a:hover,
.page-products .pp-steps__more a:focus-visible {
  color: var(--cream);
  border-bottom-color: var(--cream);
}

/* ---------- 06 礼包 ---------- */
.page-products .pp-gift__layout {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

.page-products .pp-gift__list {
  display: grid;
  gap: 10px;
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
}

.page-products .pp-gift__list li {
  position: relative;
  padding-left: 22px;
  font-size: 0.9688rem;
}

.page-products .pp-gift__list li::before {
  content: "";
  position: absolute;
  top: 0.62em;
  left: 0;
  width: 8px;
  height: 8px;
  background: var(--vermilion);
  transform: rotate(45deg);
}

.page-products .pp-gift__note {
  font-size: 0.9375rem;
  color: var(--muted);
}

.page-products .pp-callout {
  margin-top: 20px;
  padding: 18px 20px;
  background: var(--ink);
  color: var(--on-ink);
  border-left: 6px solid var(--vermilion);
}

.page-products .pp-callout__label {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.page-products .pp-callout a {
  color: var(--gold-lite);
  text-decoration: none;
  border-bottom: 1px solid rgba(240, 207, 142, 0.5);
}

.page-products .pp-callout a:hover,
.page-products .pp-callout a:focus-visible {
  color: var(--cream);
  border-bottom-color: var(--cream);
}

.page-products .pp-gift__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-products .pp-figure--gift {
  align-self: start;
}

/* ---------- 尾段导航 ---------- */
.page-products .pp-outro {
  padding: clamp(34px, 5vw, 58px) 0 clamp(46px, 7vw, 72px);
  background: var(--cream-2);
}

.page-products .pp-outro__title {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--vermilion);
}

.page-products .pp-outro__links {
  display: grid;
  gap: 10px;
}

.page-products .pp-outro__link {
  display: block;
  padding: 14px 18px;
  background: var(--pp-card-bg);
  border: 1px solid var(--pp-line);
  border-left: 4px solid var(--gold);
  font-size: 0.9375rem;
  text-decoration: none;
  transition: transform 180ms var(--ease), border-color 180ms var(--ease), background 180ms var(--ease);
}

.page-products .pp-outro__link:hover,
.page-products .pp-outro__link:focus-visible {
  transform: translateY(-3px);
  border-left-color: var(--vermilion);
  background: var(--cream);
}

.page-products .pp-outro__link:focus-visible,
.page-products .pp-hero__nav a:focus-visible,
.page-products .pp-card__link:focus-visible,
.page-products .pp-legend a:focus-visible,
.page-products .pp-steps__more a:focus-visible,
.page-products .pp-callout a:focus-visible {
  outline: 2px solid var(--vermilion);
  outline-offset: 3px;
}

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

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

@media (min-width: 880px) {
  .page-products .pp-hero__inner {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 0.75fr);
    align-items: end;
    gap: 56px;
  }

  .page-products .pp-hero__aside {
    padding: 0 0 6px 28px;
    border-top: 0;
    border-left: 1px solid var(--line-gold);
  }

  .page-products .pp-tags__layout {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    align-items: start;
  }

  .page-products .pp-index__layout {
    grid-template-columns: minmax(0, 0.62fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-products .pp-gift__layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.72fr);
    align-items: start;
  }

  .page-products .pp-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
  }

  .page-products .pp-steps::before {
    content: "";
    position: absolute;
    top: 26px;
    left: 6%;
    right: 6%;
    border-top: 2px dashed rgba(217, 162, 74, 0.45);
    z-index: 0;
  }
}

@media (min-width: 980px) {
  .page-products .pp-table__layout {
    grid-template-columns: minmax(0, 1fr) 268px;
    align-items: start;
    gap: 32px;
  }

  .page-products .pp-legend {
    position: sticky;
    top: 88px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pp-card,
  .page-products .pp-tag,
  .page-products .pp-outro__link,
  .page-products .pp-step__num {
    transition: none;
  }

  .page-products .pp-card:hover,
  .page-products .pp-tag:hover,
  .page-products .pp-outro__link:hover {
    transform: none;
  }
}