.page-products {
  background-color: var(--color-lighttexture);
  color: var(--color-ink);
  font-family: var(--font-body);
  line-height: 1.7;
}

.page-products__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0;
}

/* ===== Hero 区域 ===== */
.page-products__hero {
  position: relative;
  overflow: hidden;
  padding: var(--space-lg) var(--space-md) var(--space-xl);
  background-color: var(--color-deep);
  background-image:
    radial-gradient(circle at 85% 15%, rgba(201, 162, 39, 0.18) 0%, transparent 42%),
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: auto, 32px 32px, 32px 32px;
  color: var(--color-mercury);
  border-radius: 0 0 8px 32px;
}

.page-products__hero::after {
  content: "2003";
  position: absolute;
  right: -0.12em;
  bottom: -0.18em;
  font-family: var(--font-number);
  font-size: 9rem;
  font-weight: 700;
  line-height: 1;
  color: rgba(255, 255, 255, 0.045);
  pointer-events: none;
  user-select: none;
}

.page-products__hero .breadcrumbs a {
  color: rgba(240, 240, 240, 0.72);
  text-decoration: none;
}

.page-products__hero .breadcrumbs a:hover {
  color: var(--color-gold);
}

.page-products__hero .breadcrumbs__item + .breadcrumbs__item::before {
  content: "·";
  margin: 0 0.4rem;
  color: rgba(240, 240, 240, 0.4);
}

.page-products__eyebrow {
  margin: var(--space-md) 0 0;
  font-family: var(--font-number);
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-gold);
}

.page-products__hero h1 {
  margin: var(--space-sm) 0 var(--space-md);
  font-family: var(--font-title);
  font-size: 30px;
  line-height: 1.15;
  font-weight: 700;
  color: var(--color-warmwhite);
  max-width: 14em;
}

.page-products__hero-lead {
  max-width: 62ch;
  margin: 0;
  padding-left: var(--space-md);
  border-left: 3px solid var(--color-gold);
  font-size: 15px;
  line-height: 1.8;
  color: rgba(240, 240, 240, 0.82);
}

/* ===== 工具栏与功能筛选 ===== */
.page-products__toolbar {
  position: sticky;
  top: var(--header-height);
  z-index: 30;
  padding: var(--space-sm) var(--space-md);
  background: var(--color-warmwhite);
  border-bottom: 1px solid rgba(10, 31, 60, 0.08);
}

.page-products__legend {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  max-width: var(--container-max);
  margin: 0 auto;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-products__legend::-webkit-scrollbar {
  display: none;
}

.page-products__legend-label {
  margin-right: var(--space-sm);
  font-family: var(--font-number);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--color-deep-gray);
  white-space: nowrap;
}

.page-products__legend .legend__btn {
  background: transparent;
  border: 1px solid rgba(10, 31, 60, 0.18);
  border-radius: 999px;
  padding: 0.45rem 1rem;
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--color-deep);
  white-space: nowrap;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}

.page-products__legend .legend__btn:hover,
.page-products__legend .legend__btn.is-active {
  background: var(--color-gold);
  border-color: var(--color-gold);
  color: var(--color-deep);
  font-weight: 600;
}

/* ===== 整体双列布局 ===== */
.page-products__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-lg);
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-lg) var(--space-md) var(--space-xl);
}

/* ===== 左侧功能索引 ===== */
.page-products__index {
  position: relative;
  overflow: hidden;
  padding: var(--space-md);
  background: var(--color-deep-gray);
  color: var(--color-mercury);
  border-radius: var(--radius-organic);
}

.page-products__index::after {
  content: "ARCHIVE";
  position: absolute;
  right: -0.15em;
  bottom: -0.05em;
  font-family: var(--font-number);
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  color: rgba(255, 255, 255, 0.05);
  pointer-events: none;
  user-select: none;
}

.page-products__index-card {
  position: relative;
  z-index: 1;
}

.page-products__index-title {
  margin: 0 0 var(--space-sm);
  font-family: var(--font-title);
  font-size: 18px;
  color: var(--color-gold);
}

.page-products__index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: var(--space-xs);
  overflow-x: auto;
  scrollbar-width: none;
}

.page-products__index-list::-webkit-scrollbar {
  display: none;
}

.page-products__index-list li {
  flex: 0 0 auto;
}

.page-products__index-list a {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.8rem;
  background: rgba(255, 255, 255, 0.07);
  border-radius: 999px;
  font-size: 14px;
  color: var(--color-mercury);
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--transition), color var(--transition);
}

.page-products__index-list a:hover {
  background: var(--color-gold);
  color: var(--color-deep);
}

.page-products__index-list a span {
  font-family: var(--font-number);
  font-size: 12px;
  color: var(--color-gold);
}

.page-products__index-list a:hover span {
  color: var(--color-deep);
}

.page-products__index-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xs);
  margin: var(--space-sm) 0 0;
  padding: var(--space-sm) 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.page-products__index-stats div {
  text-align: center;
}

.page-products__index-num {
  margin: 0;
  font-family: var(--font-number);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-gold);
}

.page-products__index-unit {
  margin: 0;
  font-size: 11px;
  color: rgba(240, 240, 240, 0.65);
}

@media (min-width: 900px) {
  .page-products__layout {
    grid-template-columns: 240px minmax(0, 1fr);
    gap: var(--space-xl);
    align-items: start;
  }

  .page-products__index {
    position: sticky;
    top: calc(var(--header-height) + var(--space-lg));
    padding: var(--space-lg);
  }

  .page-products__index-list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
  }

  .page-products__index-list li {
    flex: none;
  }

  .page-products__index-list a {
    padding: 0.7rem 0;
    background: transparent;
    border-radius: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.09);
    white-space: normal;
  }

  .page-products__index-list li:last-child a {
    border-bottom: none;
  }

  .page-products__index-list a span {
    font-size: 14px;
  }

  .page-products__index-stats {
    margin-top: var(--space-lg);
    padding-top: var(--space-lg);
  }

  .page-products__index-num {
    font-size: 28px;
  }

  .page-products__index-unit {
    font-size: 13px;
  }
}

/* ===== 右侧详情卡片区 ===== */
.page-products__detail {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  min-width: 0;
}

.page-products__card {
  background: var(--color-warmwhite);
  border: 1px solid rgba(10, 31, 60, 0.07);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 32px rgba(10, 31, 60, 0.07);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
}

.page-products__card:hover {
  box-shadow: 0 14px 44px rgba(10, 31, 60, 0.12);
  transform: translateY(-2px);
}

.page-products__card-title {
  margin: 0;
}

.page-products__card-trigger {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  width: 100%;
  padding: var(--space-md);
  background: transparent;
  border: 0;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-body);
  color: inherit;
  transition: background var(--transition);
}

.page-products__card-trigger:hover {
  background: rgba(244, 241, 234, 0.6);
}

.page-products__card-index {
  flex: 0 0 auto;
  font-family: var(--font-number);
  font-size: 15px;
  font-weight: 700;
  color: var(--color-gold);
}

.page-products__card-heading {
  flex: 1;
  font-family: var(--font-title);
  font-size: 20px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-deep);
}

.page-products__card-tag {
  flex: 0 0 auto;
  padding: 0.25rem 0.7rem;
  background: rgba(201, 162, 39, 0.14);
  border: 1px solid rgba(201, 162, 39, 0.2);
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: #8a6d14;
  white-space: nowrap;
}

.page-products__card-arrow {
  flex: 0 0 auto;
  display: inline-flex;
  color: var(--color-deep-gray);
  transition: transform var(--transition);
}

.page-products__card-trigger[aria-expanded="true"] .page-products__card-arrow {
  transform: rotate(180deg);
}

@media (min-width: 768px) {
  .page-products__card-trigger {
    padding: var(--space-lg);
    gap: var(--space-md);
  }

  .page-products__card-heading {
    font-size: 28px;
  }

  .page-products__card-index {
    font-size: 18px;
  }

  .page-products__card-tag {
    font-size: 13px;
  }
}

/* ===== 折叠面板内容 ===== */
.page-products .accordion__panel {
  max-height: none;
  overflow: visible;
  padding: 0 var(--space-md) var(--space-md);
}

@media (min-width: 768px) {
  .page-products .accordion__panel {
    padding: 0 var(--space-lg) var(--space-lg);
  }
}

.page-products__feature-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-md);
}

@media (min-width: 768px) {
  .page-products__feature-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: var(--space-lg);
    align-items: center;
  }
}

.page-products__feature-copy p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(27, 27, 27, 0.85);
}

/* 步骤列表 */
.page-products__steps {
  list-style: none;
  margin: var(--space-md) 0 0;
  padding: 0;
  display: grid;
  gap: var(--space-xs);
}

.page-products__steps li {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.6rem 0.75rem;
  background: var(--color-lighttexture);
  border-left: 3px solid var(--color-gold);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 14px;
}

.page-products__steps li span {
  flex: 0 0 auto;
  padding: 0.15rem 0.5rem;
  background: rgba(201, 162, 39, 0.18);
  border-radius: 4px;
  font-family: var(--font-number);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--color-deep);
}

/* 版本对比 */
.page-products__version-list {
  list-style: none;
  margin: var(--space-md) 0 0;
  padding: 0;
  display: grid;
  gap: var(--space-xs);
}

.page-products__version-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.65rem 0.8rem;
  background: var(--color-lighttexture);
  border-radius: var(--radius-sm);
  font-size: 14px;
}

.page-products__version-v {
  flex: 0 0 auto;
  padding: 0.15rem 0.5rem;
  background: var(--color-warmwhite);
  border: 1px solid rgba(10, 31, 60, 0.14);
  border-radius: 4px;
  font-family: var(--font-number);
  font-size: 14px;
  font-weight: 700;
  color: var(--color-deep);
}

/* 年份筛选 */
.page-products__year-filter {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin: var(--space-md) 0 0;
}

.page-products__year-btn {
  padding: 0.35rem 0.85rem;
  background: var(--color-warmwhite);
  border: 1px solid rgba(10, 31, 60, 0.18);
  border-radius: 999px;
  font-family: var(--font-number);
  font-size: 14px;
  color: var(--color-deep);
  cursor: pointer;
  transition: var(--transition);
}

.page-products__year-btn:hover,
.page-products__year-btn.is-active {
  background: var(--color-deep);
  border-color: var(--color-deep);
  color: var(--color-gold);
}

/* 走势维度列表 */
.page-products__trend-list {
  list-style: none;
  margin: var(--space-md) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xs);
}

.page-products__trend-list li {
  padding: 0.6rem 0.8rem;
  background: var(--color-lighttexture);
  border-top: 2px solid var(--color-electric);
  border-radius: var(--radius-sm);
  font-size: 14px;
}

@media (max-width: 480px) {
  .page-products__trend-list {
    grid-template-columns: 1fr;
  }
}

/* PDF 归档列表 */
.page-products__archive-list {
  list-style: none;
  margin: var(--space-md) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xs);
}

.page-products__archive-item {
  padding: 0.75rem 1rem;
  background: var(--color-lighttexture);
  border-top: 3px solid var(--color-gold);
  border-radius: var(--radius-sm);
}

.page-products__archive-year {
  display: block;
  font-family: var(--font-number);
  font-size: 17px;
  font-weight: 700;
  color: var(--color-deep);
}

.page-products__archive-file {
  display: block;
  margin-top: 0.2rem;
  font-size: 13px;
  color: rgba(27, 27, 27, 0.68);
}

@media (max-width: 480px) {
  .page-products__archive-list {
    grid-template-columns: 1fr;
  }
}

/* 会员服务列表 */
.page-products__member-list {
  list-style: none;
  margin: var(--space-md) 0 0;
  padding: 0;
  display: grid;
  gap: var(--space-xs);
}

.page-products__member-list li {
  padding: 0.75rem 1rem;
  background: var(--color-lighttexture);
  border-left: 3px solid var(--color-purple);
  border-radius: var(--radius-sm);
  font-size: 14px;
}

.page-products__member-key {
  display: block;
  margin-bottom: 0.15rem;
  font-size: 15px;
  font-weight: 700;
  color: var(--color-deep);
}

/* 图片与视觉说明 */
.page-products__visual {
  margin: 0;
  background: var(--color-lighttexture);
  border: 1px solid rgba(10, 31, 60, 0.08);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.page-products__visual img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
}

.page-products__visual figcaption {
  padding: 0.6rem 0.9rem;
  background: var(--color-lighttexture);
  border-top: 1px solid rgba(10, 31, 60, 0.06);
  font-size: 13px;
  color: var(--color-deep-gray);
}

.page-products__visual--portrait {
  max-width: 280px;
  margin: 0 auto;
}

/* 卡片底部数据摘要 */
.page-products__card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px dashed rgba(10, 31, 60, 0.14);
}

.page-products__card-meta span {
  padding: 0.25rem 0.75rem;
  background: rgba(17, 43, 79, 0.07);
  border-radius: 4px;
  font-size: 13px;
  color: var(--color-deep-gray);
}

/* 延伸阅读与页面内导航 */
.page-products__more {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-md) var(--space-xl);
}

.page-products__more .btn--outline {
  border-color: rgba(10, 31, 60, 0.25);
  color: var(--color-deep);
}

.page-products__more .btn--outline:hover {
  background: var(--color-deep);
  border-color: var(--color-deep);
  color: var(--color-warmwhite);
}

/* ===== 桌面端强化 ===== */
@media (min-width: 768px) {
  .page-products__hero {
    padding: var(--space-xl) var(--space-xl);
  }

  .page-products__hero::after {
    font-size: 14rem;
  }

  .page-products__hero h1 {
    font-size: 48px;
    letter-spacing: 0.02em;
  }

  .page-products__hero-lead {
    font-size: 17px;
  }

  .page-products__eyebrow {
    margin-top: var(--space-lg);
  }
}

@media (min-width: 900px) {
  .page-products__more {
    padding-left: var(--space-xl);
    padding-right: var(--space-xl);
  }
}