/**
 * /app 第二套异结构落地：与 app-landing.css / app-landing-templates.css 类名与布局体系完全独立。
 * 前缀 lp-het-*；三栏（侧栏锚点 / 主栏 / 右栏下载）+ 顶通横幅；掠影为横滑带，非四宫格。
 */
.lp-het {
  --het-bg0: #0c0f14;
  --het-bg1: #151b24;
  --het-card: #1c2531;
  --het-line: rgba(232, 236, 245, 0.1);
  --het-text: #e8ecf5;
  --het-muted: #9aa4b2;
  --het-accent: #e07a5f;
  --het-accent2: #7c9cff;
  --het-radius: 14px;
  font-family: "Noto Sans SC", "Segoe UI", "PingFang SC", "Microsoft YaHei UI", system-ui, sans-serif;
  color: var(--het-text);
  background: linear-gradient(165deg, var(--het-bg0) 0%, #121822 42%, var(--het-bg1) 100%);
}

.lp-het * {
  box-sizing: border-box;
}

.lp-het-banner {
  border-bottom: 1px solid var(--het-line);
  background: linear-gradient(90deg, rgba(224, 122, 95, 0.12), transparent 55%),
    radial-gradient(ellipse 80% 120% at 0% 0%, rgba(124, 156, 255, 0.18), transparent 55%);
}

.lp-het-banner-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 24px 20px 28px;
  text-align: center;
}

.lp-het-kicker {
  margin: 0 0 10px;
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--het-accent2);
}

.lp-het-title {
  margin: 0 0 12px;
  font-size: clamp(1.35rem, 3vw, 1.85rem);
  font-weight: 800;
  line-height: 1.25;
}

.lp-het-title-tag {
  display: inline-block;
  margin-left: 8px;
  padding: 2px 10px;
  font-size: 12px;
  font-weight: 600;
  vertical-align: middle;
  color: var(--het-bg0);
  background: var(--het-accent);
  border-radius: 999px;
}

.lp-het-promise {
  margin: 0 auto 10px;
  max-width: 52rem;
  font-size: 15px;
  color: var(--het-muted);
}

.lp-het-lead {
  margin: 0 auto;
  max-width: 48rem;
  font-size: 14px;
  line-height: 1.65;
  color: var(--het-muted);
}

.lp-het-stage {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr) 300px;
  gap: 0;
  max-width: 1240px;
  margin: 0 auto;
  min-height: 40vh;
  align-items: start;
}

.lp-het-rail {
  position: sticky;
  top: 0;
  padding: 20px 12px 24px 20px;
  border-right: 1px solid var(--het-line);
  background: rgba(12, 15, 20, 0.5);
}

.lp-het-rail-h {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--het-muted);
}

.lp-het-rail-list {
  margin: 0;
  padding: 0 0 0 18px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--het-muted);
}

.lp-het-rail-list a {
  color: var(--het-accent2);
  text-decoration: none;
}

.lp-het-rail-list a:hover {
  text-decoration: underline;
}

.lp-het-core {
  padding: 20px 12px 48px;
  min-width: 0;
}

.lp-het-panel {
  margin-bottom: 28px;
  padding: 20px 18px;
  background: var(--het-card);
  border: 1px solid var(--het-line);
  border-radius: var(--het-radius);
}

.lp-het-h2 {
  margin: 0 0 14px;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--het-text);
}

.lp-het-h3 {
  margin: 0 0 8px;
  font-size: 0.95rem;
}

.lp-het-metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.lp-het-metric {
  padding: 12px 10px;
  text-align: center;
  background: var(--het-bg0);
  border: 1px solid var(--het-line);
  border-radius: var(--het-radius);
}

.lp-het-metric-v {
  display: block;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--het-accent);
}

.lp-het-metric-l {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  color: var(--het-muted);
}

.lp-het-timeline {
  margin: 0;
  padding: 0 0 0 18px;
  border-left: 3px solid var(--het-accent);
  list-style: none;
}

.lp-het-tl-item {
  position: relative;
  margin-bottom: 18px;
  padding-left: 8px;
}

.lp-het-tl-item::before {
  content: "";
  position: absolute;
  left: -22px;
  top: 6px;
  width: 10px;
  height: 10px;
  background: var(--het-accent2);
  border-radius: 50%;
  box-shadow: 0 0 0 3px var(--het-card);
}

.lp-het-tl-item h3 {
  margin: 0 0 6px;
  font-size: 13px;
  letter-spacing: 0.02em;
}

.lp-het-tl-item p {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--het-muted);
}

.lp-het-film-lead {
  margin: 0 0 14px;
  font-size: 13px;
  color: var(--het-muted);
}

.lp-het-filmstrip {
  display: flex;
  gap: 14px;
  overflow-x: auto;
  padding-bottom: 8px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.lp-het-film-item {
  flex: 0 0 220px;
  margin: 0;
  scroll-snap-align: start;
  background: var(--het-bg0);
  border: 1px solid var(--het-line);
  border-radius: var(--het-radius);
  overflow: hidden;
}

.lp-het-film-img {
  display: block;
  width: 100%;
  height: auto;
  vertical-align: middle;
}

.lp-het-film-item figcaption {
  padding: 8px 10px;
  font-size: 12px;
  color: var(--het-muted);
}

.lp-het-trust-lead {
  margin: 0 0 14px;
  font-size: 13px;
  color: var(--het-muted);
}

.lp-het-trust-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.lp-het-trust-cell {
  padding: 12px;
  background: var(--het-bg0);
  border: 1px solid var(--het-line);
  border-radius: var(--het-radius);
}

.lp-het-trust-cell h3 {
  margin: 0 0 6px;
  font-size: 13px;
}

.lp-het-trust-cell p {
  margin: 0 0 8px;
  font-size: 12px;
  line-height: 1.55;
  color: var(--het-muted);
}

.lp-het-trust-img {
  display: block;
  width: 100%;
  max-width: 120px;
  height: auto;
  border-radius: 6px;
  opacity: 0.95;
}

.lp-het-intro-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.lp-het-intro-cell {
  padding: 12px 14px;
  border-left: 3px solid var(--het-accent);
  background: rgba(0, 0, 0, 0.2);
  border-radius: 0 var(--het-radius) var(--het-radius) 0;
}

.lp-het-intro-cell h3 {
  margin: 0 0 6px;
  font-size: 13px;
}

.lp-het-intro-cell p {
  margin: 0;
  font-size: 12px;
  line-height: 1.55;
  color: var(--het-muted);
}

.lp-het-dl {
  margin: 0;
}

.lp-het-dl-row {
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr);
  gap: 10px;
  padding: 12px 0;
  border-bottom: 1px solid var(--het-line);
}

.lp-het-dl-row:last-child {
  border-bottom: 0;
}

.lp-het-dl-row dt {
  margin: 0;
  font-weight: 800;
  font-size: 13px;
  color: var(--het-accent2);
}

.lp-het-dl-row dd {
  margin: 0;
  font-size: 13px;
  line-height: 1.55;
  color: var(--het-muted);
}

.lp-het-dl-row dd strong {
  display: block;
  margin-bottom: 4px;
  color: var(--het-text);
}

.lp-het-install-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.lp-het-checklist,
.lp-het-step-ol {
  margin: 0;
  padding-left: 18px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--het-muted);
}

.lp-het-checklist strong,
.lp-het-step-ol strong {
  color: var(--het-text);
}

.lp-het-changelog-lead {
  margin: 0 0 12px;
  font-size: 13px;
  color: var(--het-muted);
}

.lp-het-faq {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.lp-het-faq-item {
  padding: 0 12px;
  background: var(--het-bg0);
  border: 1px solid var(--het-line);
  border-radius: 10px;
}

.lp-het-faq-item summary {
  cursor: pointer;
  padding: 12px 0;
  font-size: 13px;
  font-weight: 600;
}

.lp-het-faq-a {
  margin: 0 0 12px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--het-muted);
}

.lp-het-legal-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.lp-het-legal-block {
  padding: 14px;
  background: var(--het-bg0);
  border-radius: var(--het-radius);
  border: 1px solid var(--het-line);
}

.lp-het-legal-block h3 {
  margin: 0 0 8px;
  font-size: 13px;
}

.lp-het-legal-block ul {
  margin: 0;
  padding-left: 18px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--het-muted);
}

.lp-het-crumb {
  margin-top: 8px;
  padding: 12px 0;
  font-size: 13px;
  color: var(--het-muted);
}

.lp-het-crumb a {
  color: var(--het-accent2);
  text-decoration: none;
}

.lp-het-aside {
  position: sticky;
  top: 0;
  padding: 20px 20px 24px 12px;
  border-left: 1px solid var(--het-line);
  background: rgba(12, 15, 20, 0.5);
}

.lp-het-aside-inner {
  padding: 16px;
  background: var(--het-card);
  border: 1px solid var(--het-line);
  border-radius: var(--het-radius);
}

.lp-het-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}

.lp-het-badge {
  display: inline-block;
  padding: 4px 10px;
  font-size: 11px;
  font-weight: 600;
  color: var(--het-bg0);
  background: var(--het-accent2);
  border-radius: 999px;
}

.lp-het-badge--soft {
  background: rgba(124, 156, 255, 0.25);
  color: var(--het-text);
}

.lp-het-aside-promise {
  margin: 0 0 10px;
  font-size: 12px;
  line-height: 1.55;
  color: var(--het-muted);
}

.lp-het-aside-cta {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 14px;
}

.lp-het-btn {
  display: block;
  padding: 10px 12px;
  font-size: 13px;
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  border-radius: 10px;
  border: 1px solid transparent;
}

.lp-het-btn--a {
  color: #0c0f14;
  background: var(--het-accent);
}

.lp-het-btn--b {
  color: var(--het-text);
  background: transparent;
  border-color: var(--het-line);
}

.lp-het-btn--c {
  color: var(--het-accent2);
  background: rgba(124, 156, 255, 0.12);
}

.lp-het-qr {
  text-align: center;
  margin-bottom: 12px;
}

.lp-het-qr-img {
  display: inline-block;
  border-radius: 8px;
  border: 1px solid var(--het-line);
}

.lp-het-qr-cap {
  margin: 8px 0 0;
  font-size: 11px;
  color: var(--het-muted);
}

.lp-het-stores {
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
}

.lp-het-store img {
  display: block;
  max-width: 100%;
  height: auto;
}

@media (max-width: 1100px) {
  .lp-het-stage {
    grid-template-columns: 1fr;
  }

  .lp-het-rail {
    display: none;
  }

  .lp-het-aside {
    position: static;
    border-left: 0;
    border-top: 1px solid var(--het-line);
    padding: 16px;
  }

  .lp-het-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .lp-het-trust-row,
  .lp-het-intro-grid,
  .lp-het-install-split,
  .lp-het-legal-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .lp-het-metrics {
    grid-template-columns: 1fr;
  }

  .lp-het-film-item {
    flex-basis: 78vw;
  }
}