.page-products {
  overflow-x: hidden;
  background: var(--c-bg);
}

/* 页面头部索引 */
.page-products .breadcrumb {
  padding: 28px 0 0;
}

.page-products .app-intro {
  display: grid;
  gap: 16px;
  padding: 40px 0 32px;
  border-bottom: 1px solid var(--c-grid);
  position: relative;
}

.page-products .app-intro::after {
  content: "";
  display: block;
  width: 64px;
  height: 3px;
  background: var(--c-gold);
}

.page-products .app-kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--c-gold);
  text-transform: uppercase;
}

.page-products .app-intro h1 {
  margin: 0;
  font-size: var(--fs-h1);
  line-height: 1.35;
  letter-spacing: 0.01em;
}

.page-products .lead {
  margin: 0;
  color: var(--c-muted);
  line-height: 1.85;
  max-width: 78ch;
}

.page-products .keyword-mono {
  font-family: var(--font-mono);
  font-size: 0.95em;
  color: var(--c-gold-light);
  background: rgba(212, 175, 55, 0.08);
  border-bottom: 1px solid rgba(212, 175, 55, 0.35);
  padding: 1px 5px;
}

.page-products .app-metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border: 1px solid var(--c-grid);
  background: var(--c-grid);
  gap: 1px;
}

.page-products .metric-item {
  background: rgba(11, 29, 58, 0.92);
  padding: 14px 16px;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
}

.page-products .metric-label {
  font-size: 13px;
  color: var(--c-muted);
}

.page-products .metric-value {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--c-gold-light);
}

.page-products .app-index {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin: 24px 0 0;
  padding: 0 0 40px;
  border-bottom: 1px solid var(--c-grid);
}

.page-products .index-title {
  grid-column: 1 / -1;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--c-muted);
  text-transform: uppercase;
}

.page-products .index-link {
  display: block;
  border: 1px solid var(--c-grid);
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 14px;
  text-decoration: none;
  color: var(--c-text);
  background: rgba(255, 255, 255, 0.02);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), background var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-products .index-link:hover,
.page-products .index-link[aria-current="true"] {
  border-color: var(--c-gold);
  color: var(--c-gold-light);
  background: rgba(212, 175, 55, 0.05);
  transform: translateX(4px);
}

/* 章节画板 */
.page-products .chapter {
  padding: 56px 0;
  border-bottom: 1px solid var(--c-grid);
  position: relative;
}

.page-products .vault-chapter {
  background: linear-gradient(180deg, rgba(15, 59, 63, 0.15), rgba(15, 59, 63, 0.55) 40%, rgba(11, 29, 58, 0.6));
}

.page-products .quarter-chapter {
  background: linear-gradient(180deg, rgba(45, 35, 82, 0.15), rgba(45, 35, 82, 0.55) 40%, rgba(11, 29, 58, 0.6));
}

.page-products .save-chapter {
  background: linear-gradient(180deg, rgba(94, 29, 44, 0.12), rgba(94, 29, 44, 0.55) 40%, rgba(11, 29, 58, 0.6));
}

.page-products .chapter-head {
  display: grid;
  gap: 10px;
  margin-bottom: 28px;
}

.page-products .chapter-no {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--c-gold);
}

.page-products .chapter-title {
  margin: 0;
  font-size: var(--fs-h2);
  line-height: 1.4;
}

.page-products .chapter-lead {
  margin: 0;
  color: var(--c-muted);
  line-height: 1.8;
  max-width: 76ch;
}

/* 01 注册入口 */
.page-products .entry-grid {
  display: grid;
  gap: 24px;
  margin-top: 32px;
}

.page-products .entry-copy {
  border: 1px solid var(--c-grid);
  background: rgba(11, 29, 58, 0.55);
}

.page-products .card-title {
  margin: 0 0 14px;
  font-size: 18px;
}

.page-products .checklist {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-products .checklist li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  line-height: 1.7;
  font-size: 15px;
}

.page-products .check-square {
  flex: 0 0 14px;
  width: 14px;
  height: 14px;
  margin-top: 7px;
  border: 1px solid var(--c-gold);
  background: rgba(212, 175, 55, 0.12);
}

.page-products .media-container {
  margin: 24px 0 0;
  border: 1px solid var(--c-grid);
  padding: 10px;
  background: repeating-linear-gradient(45deg, rgba(255, 255, 255, 0.015) 0 1px, transparent 1px 10px);
}

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

.page-products .media-caption {
  display: block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-muted);
}

/* 02 客户端对照三档区 */
.page-products .vault-layout {
  display: grid;
  gap: 24px;
}

.page-products .vault-stack {
  display: grid;
  gap: 14px;
}

.page-products .vault-entry {
  position: relative;
  border: 1px solid var(--c-grid);
  border-left: 4px solid var(--c-gold);
  padding: 20px;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-products .vault-entry:nth-child(1) {
  background: linear-gradient(135deg, rgba(15, 59, 63, 0.9), rgba(15, 59, 63, 0.6));
}

.page-products .vault-entry:nth-child(2) {
  background: linear-gradient(135deg, rgba(94, 29, 44, 0.9), rgba(94, 29, 44, 0.6));
}

.page-products .vault-entry:nth-child(3) {
  background: linear-gradient(135deg, rgba(45, 35, 82, 0.9), rgba(45, 35, 82, 0.6));
}

.page-products .vault-entry:hover {
  transform: translateX(6px);
  border-color: var(--c-gold);
}

.page-products .vault-entry-head {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  align-items: center;
  margin-bottom: 12px;
}

.page-products .vault-note {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-muted);
}

.page-products .vault-name {
  margin: 0 0 8px;
  font-size: 18px;
}

.page-products .vault-entry p {
  margin: 0 0 16px;
  line-height: 1.75;
  font-size: 15px;
  color: rgba(245, 248, 252, 0.92);
}

.page-products .vault-meta {
  margin: 0;
  border-top: 1px solid rgba(245, 248, 252, 0.12);
  padding-top: 14px;
  display: grid;
  gap: 10px;
}

.page-products .vault-meta div {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  font-size: 14px;
}

.page-products .vault-meta dt {
  color: var(--c-muted);
}

.page-products .vault-meta dd {
  margin: 0;
  font-family: var(--font-mono);
  text-align: right;
}

.page-products .vault-compare {
  border: 1px solid var(--c-grid);
  background: rgba(11, 29, 58, 0.6);
}

.page-products .data-table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 14px;
}

.page-products .data-table th,
.page-products .data-table td {
  text-align: left;
  padding: 10px 8px;
  border-bottom: 1px solid var(--c-grid);
  vertical-align: top;
}

.page-products .data-table th {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-gold);
  border-bottom-color: rgba(212, 175, 55, 0.6);
}

.page-products .vault-detail {
  margin-top: 4px;
  border: 1px solid var(--c-grid);
}

.page-products .vault-detail summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--c-gold-light);
  list-style: none;
}

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

.page-products .vault-detail summary::after {
  content: "+";
  font-family: var(--font-mono);
  color: var(--c-gold);
}

.page-products .vault-detail[open] summary {
  border-bottom: 1px solid var(--c-grid);
}

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

.page-products .vault-detail p {
  margin: 0;
  padding: 14px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-muted);
}

.page-products .vault-chart {
  margin-top: 28px;
}

/* 03 季度更新记录 */
.page-products .quarter-layout {
  display: grid;
  gap: 24px;
}

.page-products .quarter-timeline {
  display: grid;
  gap: 14px;
}

.page-products .quarter-item {
  border: 1px solid var(--c-grid);
  border-left: 4px solid var(--c-grid);
  padding: 18px 20px;
  display: grid;
  gap: 6px;
  background: rgba(11, 29, 58, 0.4);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-products .quarter-item:hover {
  border-color: var(--c-gold);
  transform: translateX(4px);
}

.page-products .quarter-spring {
  border-left-color: var(--c-gold);
}

.page-products .quarter-summer {
  border-left-color: var(--c-green);
}

.page-products .quarter-autumn {
  border-left-color: var(--c-gold-light);
}

.page-products .quarter-winter {
  border-left-color: var(--c-muted);
}

.page-products .quarter-item h3 {
  margin: 0;
  font-size: 18px;
}

.page-products .quarter-item p {
  margin: 0;
  color: var(--c-muted);
  font-size: 14px;
  line-height: 1.75;
}

.page-products .quarter-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-muted);
}

.page-products .quarter-tag-current {
  color: var(--c-green);
}

.page-products .quarter-aside {
  border: 1px solid var(--c-grid);
  background: rgba(45, 35, 82, 0.6);
}

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

.page-products .rule-list li {
  position: relative;
  padding-left: 16px;
  line-height: 1.7;
  font-size: 15px;
  color: var(--c-text);
}

.page-products .rule-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 6px;
  height: 6px;
  background: var(--c-gold);
}

.page-products .quarter-image {
  margin-top: 28px;
}

/* 04 中文收藏与导出 */
.page-products .save-layout {
  display: grid;
  gap: 24px;
}

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

.page-products .step-list li {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 14px;
  align-items: start;
  border: 1px solid var(--c-grid);
  padding: 16px;
  background: rgba(255, 255, 255, 0.02);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-products .step-list li:hover {
  border-color: var(--c-gold);
  background: rgba(212, 175, 55, 0.04);
}

.page-products .step-no {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--c-gold);
}

.page-products .step-list h3 {
  margin: 0 0 4px;
  font-size: 16px;
}

.page-products .step-list p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-muted);
}

.page-products .save-feature {
  border: 1px solid var(--c-grid);
  padding: 24px 20px;
  background: linear-gradient(135deg, rgba(15, 59, 63, 0.45), rgba(15, 59, 63, 0.85));
  display: flex;
  align-items: center;
}

.page-products .save-feature-title {
  margin: 0 0 16px;
  font-size: 20px;
  line-height: 1.4;
}

.page-products .save-feature ul {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products .save-feature li {
  position: relative;
  padding-left: 18px;
  line-height: 1.7;
  font-size: 15px;
  color: var(--c-text);
}

.page-products .save-feature li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 8px;
  height: 8px;
  background: var(--c-green);
}

.page-products .save-image {
  margin-top: 28px;
}

/* 05 会员权益设置 */
.page-products .vip-layout {
  display: grid;
  gap: 24px;
}

.page-products .vip-settings-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-products .vip-card {
  border: 1px solid var(--c-grid);
  padding: 20px;
  background: linear-gradient(135deg, rgba(11, 29, 58, 0.6), rgba(45, 35, 82, 0.4));
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-products .vip-card:hover {
  transform: translateY(-4px);
  border-color: var(--c-gold);
}

.page-products .vip-code {
  display: inline-block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--c-gold);
}

.page-products .vip-card h3 {
  margin: 0 0 8px;
  font-size: 16px;
}

.page-products .vip-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-muted);
}

.page-products .vip-card a {
  color: var(--c-gold-light);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.page-products .vip-card a:hover {
  color: var(--c-gold);
}

.page-products .vip-image {
  margin-top: 8px;
}

.page-products .vip-cta {
  margin-top: 28px;
  border: 1px solid var(--c-gold);
  background: rgba(212, 175, 55, 0.06);
}

.page-products .vip-cta h3 {
  margin: 0 0 8px;
  font-size: 20px;
}

.page-products .vip-cta p {
  margin: 0 0 16px;
  color: var(--c-muted);
  line-height: 1.7;
}

.page-products .cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* 响应式 */
@media (min-width: 768px) {
  .page-products .app-metrics {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-products .app-index {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-products .save-layout {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }

  .page-products .vip-settings-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .page-products .app-index {
    grid-template-columns: repeat(6, 1fr);
  }

  .page-products .index-title {
    grid-column: auto;
  }

  .page-products .entry-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-products .vault-layout {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-products .quarter-layout {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-products .vip-layout {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
}