/* ===== 进阶数据能力页 · page-features-advanced ===== */

.page-features-advanced .adv-hero__grid {
  display: grid;
  gap: var(--space-4);
  align-items: start;
}

.page-features-advanced .adv-hero__copy h1 {
  margin: var(--space-2) 0;
  font-size: var(--text-4xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
}

.page-features-advanced .adv-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: var(--space-3) 0 0;
  padding: 0;
  list-style: none;
}

.page-features-advanced .adv-hero__facts li {
  display: inline-flex;
  align-items: baseline;
  gap: var(--space-1);
  padding: calc(var(--space-1) * 0.75) var(--space-2);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--color-primary-soft) 55%, transparent);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-features-advanced .adv-hero__facts .mono {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-primary);
}

.page-features-advanced .adv-hero__figure,
.page-features-advanced .adv-split__media {
  margin: 0;
}

.page-features-advanced .adv-hero__figure img,
.page-features-advanced .adv-split__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

@media (min-width: 900px) {
  .page-features-advanced .adv-hero__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 1fr);
    gap: var(--space-6);
    align-items: center;
  }
}

/* ---------- 章节导航条 ---------- */

.page-features-advanced .adv-nav-strip {
  position: sticky;
  top: calc(var(--space-8) + var(--space-3));
  z-index: 4;
  padding: var(--space-1) 0 var(--space-2);
}

.page-features-advanced .adv-nav {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  overflow-x: auto;
  padding: calc(var(--space-1) * 0.75) var(--space-2);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--color-surface) 84%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: var(--shadow-1);
  scrollbar-width: none;
}

.page-features-advanced .adv-nav::-webkit-scrollbar {
  display: none;
}

.page-features-advanced .adv-nav .section-nav__title {
  flex: none;
  margin: 0;
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-ink-muted);
}

.page-features-advanced .adv-nav .section-nav__list {
  display: flex;
  flex: 1 1 auto;
  align-items: center;
  gap: var(--space-1);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-features-advanced .adv-nav .section-nav__link {
  display: block;
  padding: calc(var(--space-1) * 0.75) var(--space-2);
  border-radius: var(--radius-pill);
  font-size: var(--text-sm);
  white-space: nowrap;
  color: var(--color-ink-soft);
  text-decoration: none;
  transition: background-color 0.18s ease, color 0.18s ease;
}

.page-features-advanced .adv-nav .section-nav__link:hover,
.page-features-advanced .adv-nav .section-nav__link.is-active {
  background: var(--color-primary-soft);
  color: var(--color-primary);
}

/* ---------- 适用判断三块 ---------- */

.page-features-advanced .adv-cases {
  display: grid;
  gap: var(--space-3);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-features-advanced .adv-case {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding-top: var(--space-4);
}

.page-features-advanced .adv-case::before {
  content: "";
  position: absolute;
  top: var(--border-thin);
  left: var(--space-3);
  width: var(--space-6);
  height: calc(var(--border-thick) * 2);
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}

.page-features-advanced .adv-case__index {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.14em;
  color: var(--color-accent);
}

.page-features-advanced .adv-case h3 {
  margin: 0;
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
}

.page-features-advanced .adv-case p {
  margin: 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-features-advanced .adv-case .adv-case__hint {
  margin-top: auto;
  padding-top: var(--space-2);
  border-top: var(--border-thin) solid var(--color-line);
  color: var(--color-ink);
}

@media (min-width: 820px) {
  .page-features-advanced .adv-cases {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 对比表 ---------- */

.page-features-advanced .adv-table-wrap {
  margin-top: var(--space-4);
  overflow-x: auto;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-lg);
  background: color-mix(in srgb, var(--color-surface) 88%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-1);
  -webkit-overflow-scrolling: touch;
}

.page-features-advanced .adv-table {
  width: 100%;
  min-width: calc(var(--container) * 0.6);
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.page-features-advanced .adv-table thead th {
  padding: var(--space-2);
  border-bottom: var(--border-thin) solid var(--color-line);
  background: var(--color-primary-soft);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-align: left;
  white-space: nowrap;
  color: var(--color-primary);
}

.page-features-advanced .adv-table tbody th,
.page-features-advanced .adv-table tbody td {
  padding: var(--space-2);
  border-bottom: var(--border-thin) solid var(--color-line);
  vertical-align: top;
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-features-advanced .adv-table tbody th {
  white-space: nowrap;
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-features-advanced .adv-table tbody td:first-of-type {
  color: var(--color-ink);
}

.page-features-advanced .adv-table tbody tr:last-child th,
.page-features-advanced .adv-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-features-advanced .adv-note {
  margin: var(--space-2) 0 0;
  font-size: var(--text-xs);
  line-height: var(--leading-body);
  color: var(--color-ink-muted);
}

/* ---------- 经济曲线手风琴 ---------- */

.page-features-advanced .adv-acc {
  display: grid;
  gap: var(--space-2);
  max-width: var(--measure);
  margin-top: var(--space-4);
}

.page-features-advanced .adv-acc details {
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--color-surface) 90%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.page-features-advanced .adv-acc details[open] {
  border-color: color-mix(in srgb, var(--color-primary) 42%, var(--color-line));
  box-shadow: var(--shadow-1);
}

.page-features-advanced .adv-acc summary {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3);
  cursor: pointer;
  list-style: none;
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-features-advanced .adv-acc summary::-webkit-details-marker {
  display: none;
}

.page-features-advanced .adv-acc summary::after {
  content: "+";
  flex: none;
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  line-height: 1;
  color: var(--color-primary);
}

.page-features-advanced .adv-acc details[open] summary::after {
  content: "–";
}

.page-features-advanced .adv-acc details p {
  margin: 0;
  padding: 0 var(--space-3) var(--space-3);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 图文错位分栏 ---------- */

.page-features-advanced .adv-split {
  display: grid;
  gap: var(--space-4);
  align-items: start;
}

.page-features-advanced .adv-split__copy h2 {
  margin: var(--space-1) 0 var(--space-2);
  font-size: var(--text-3xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
}

.page-features-advanced .adv-split__copy p {
  margin: 0 0 var(--space-2);
  line-height: var(--leading-body);
}

.page-features-advanced .adv-split__copy p:last-child {
  margin-bottom: 0;
}

@media (min-width: 900px) {
  .page-features-advanced .adv-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: var(--space-6);
    align-items: center;
  }

  .page-features-advanced .adv-split--flip .adv-split__media {
    order: -1;
  }
}

/* ---------- 时间轴节点 ---------- */

.page-features-advanced .adv-timeline {
  display: grid;
  gap: var(--space-2);
  margin: var(--space-4) 0 0;
  padding: 0;
  list-style: none;
}

.page-features-advanced .adv-timeline__item {
  position: relative;
  padding: var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--color-surface) 90%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.page-features-advanced .adv-timeline__item::before {
  content: "";
  position: absolute;
  top: var(--border-thin);
  left: var(--space-3);
  right: var(--space-3);
  height: calc(var(--border-thick) * 2);
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--color-accent), var(--color-primary));
  opacity: 0.85;
}

.page-features-advanced .adv-timeline__time {
  display: inline-block;
  padding: calc(var(--space-1) * 0.25) var(--space-1);
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--color-highlight) 75%, transparent);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  color: var(--color-accent);
}

.page-features-advanced .adv-timeline__item h3 {
  margin: var(--space-2) 0 var(--space-1);
  font-size: var(--text-base);
  line-height: var(--leading-heading);
}

.page-features-advanced .adv-timeline__item p {
  margin: 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

@media (min-width: 760px) {
  .page-features-advanced .adv-timeline {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 阵容追踪列表 ---------- */

.page-features-advanced .adv-roster {
  display: grid;
  gap: var(--space-2);
  margin: var(--space-3) 0 0;
  padding: 0;
  list-style: none;
}

.page-features-advanced .adv-roster li {
  position: relative;
  padding-left: var(--space-3);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-features-advanced .adv-roster li::before {
  content: "";
  position: absolute;
  top: calc(var(--space-1) * 0.9);
  left: 0;
  width: var(--space-1);
  height: var(--space-1);
  border-radius: var(--radius-pill);
  background: var(--color-accent);
}

/* ---------- 两套视图分工 ---------- */

.page-features-advanced .adv-sides {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.page-features-advanced .adv-side {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.page-features-advanced .adv-side--accent {
  border-color: color-mix(in srgb, var(--color-primary) 38%, transparent);
  background: color-mix(in srgb, var(--color-primary-soft) 72%, transparent);
}

.page-features-advanced .adv-side h3 {
  margin: 0;
  font-size: var(--text-xl);
  line-height: var(--leading-heading);
}

.page-features-advanced .adv-side p {
  margin: 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-features-advanced .adv-side ul {
  display: grid;
  gap: var(--space-1);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-features-advanced .adv-side li {
  position: relative;
  padding-left: var(--space-3);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-features-advanced .adv-side li::before {
  content: "—";
  position: absolute;
  left: 0;
  font-family: var(--font-mono);
  color: var(--color-primary);
}

.page-features-advanced .adv-side a {
  align-self: flex-start;
  margin-top: auto;
  padding-bottom: calc(var(--space-1) * 0.25);
  border-bottom: var(--border-thin) solid currentColor;
  font-weight: var(--weight-heading);
  color: var(--color-primary);
  text-decoration: none;
}

@media (min-width: 820px) {
  .page-features-advanced .adv-sides {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.28fr);
    gap: var(--space-4);
    align-items: stretch;
  }
}

/* ---------- 收尾通道 ---------- */

.page-features-advanced .adv-cta__inner {
  display: grid;
  gap: var(--space-3);
  padding: var(--space-4);
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--radius-lg);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-features-advanced .adv-cta__inner h2 {
  margin: 0 0 var(--space-2);
  font-size: var(--text-2xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
}

.page-features-advanced .adv-cta__inner p {
  margin: 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: color-mix(in srgb, var(--color-contrast-ink) 80%, transparent);
}

.page-features-advanced .adv-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.page-features-advanced .adv-top-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  margin-top: var(--space-3);
  padding-bottom: calc(var(--space-1) * 0.25);
  border-bottom: var(--border-thin) solid var(--color-line);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  text-decoration: none;
}

.page-features-advanced .adv-top-btn::before {
  content: "↑";
  font-family: var(--font-mono);
  color: var(--color-primary);
}

@media (min-width: 820px) {
  .page-features-advanced .adv-cta__inner {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    gap: var(--space-6);
    align-items: center;
    padding: var(--space-6);
  }
}