:root {
  --panel-border: rgba(255, 255, 255, 0.16);
  --text: #f4f6ff;
  --text-soft: rgba(220, 224, 246, 0.78);
  --primary: #ff3d92;
  --secondary: #6f6bff;
  --success: #1cd7a1;
  --shadow-lg: 0 20px 45px rgba(0, 0, 0, 0.4);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  color: var(--text);
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at 14% -10%, rgba(255, 61, 146, 0.2), transparent 28%),
    radial-gradient(circle at 88% 10%, rgba(111, 107, 255, 0.22), transparent 34%),
    linear-gradient(165deg, #090d1f 0%, #070a17 48%, #060711 100%);
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(1080px, 92vw);
  margin: 0 auto;
}

.bg-glow {
  position: fixed;
  filter: blur(88px);
  border-radius: 999px;
  z-index: 0;
  pointer-events: none;
}

.bg-glow-1 {
  width: 320px;
  height: 320px;
  left: -90px;
  top: -140px;
  background: rgba(255, 61, 146, 0.3);
}

.bg-glow-2 {
  width: 300px;
  height: 300px;
  right: -100px;
  top: 220px;
  background: rgba(111, 107, 255, 0.3);
}

.site-header,
main,
.site-footer {
  position: relative;
  z-index: 2;
}

.site-header {
  padding: 18px 0;
}

.nav-wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.brand-logo {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  box-shadow: 0 8px 18px rgba(255, 61, 146, 0.25);
}

.brand-text {
  font-size: 18px;
  font-weight: 700;
}

.ghost-btn {
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(8px);
  color: var(--text);
  padding: 9px 16px;
  border-radius: 11px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: 0.2s ease;
}

.ghost-btn:hover {
  transform: translateY(-1px);
  border-color: rgba(255, 255, 255, 0.35);
}

.hero {
  padding: 12px 0 42px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 34px;
  align-items: center;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 24px;
  padding: 38px 34px;
  background: linear-gradient(155deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03));
  backdrop-filter: blur(10px);
}

.pill {
  margin: 0;
  display: inline-block;
  font-size: 12px;
  padding: 7px 12px;
  border-radius: 999px;
  border: 1px solid var(--panel-border);
  background: rgba(255, 255, 255, 0.08);
}

h1 {
  margin: 14px 0 6px;
  font-size: clamp(38px, 5.4vw, 56px);
  line-height: 1.03;
}

.subtitle {
  margin: 0;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.3;
  font-weight: 700;
}

.desc {
  margin-top: 14px;
  max-width: 520px;
  line-height: 1.75;
  font-size: 16px;
  color: var(--text-soft);
}

.download-actions {
  margin-top: 24px;
}

.btn {
  min-width: 168px;
  padding: 13px 18px;
  border-radius: 14px;
  font-size: 18px;
  font-weight: 700;
  text-align: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: linear-gradient(135deg, #ff3d92, #ff66b2);
  box-shadow:
    0 10px 24px rgba(255, 61, 146, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.28);
}

.btn.recommend {
  outline: 2px solid rgba(255, 255, 255, 0.66);
  outline-offset: 1px;
}

.tip,
.version {
  margin: 12px 0 0;
  font-size: 14px;
  color: var(--text-soft);
}

.version {
  margin-top: 6px;
}

.hero-card {
  display: grid;
  justify-items: center;
}

.phone-mock {
  width: min(340px, 82vw);
  border-radius: 32px;
  padding: 12px;
  background: linear-gradient(160deg, #11172a, #171c32);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: var(--shadow-lg);
}

.phone-notch {
  width: 128px;
  height: 21px;
  border-radius: 0 0 14px 14px;
  margin: 0 auto 8px;
  background: #090d19;
}

.screen {
  border-radius: 22px;
  padding: 14px;
  overflow: hidden;
  background: linear-gradient(180deg, #273057, #101429);
}

.screen-head {
  margin-bottom: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 20px;
  font-weight: 700;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--success);
}

.video-list {
  height: 282px;
  overflow: hidden;
  position: relative;
}

.video-track {
  display: grid;
  gap: 12px;
  transition: transform 0.5s ease;
}

.video-item {
  height: 86px;
  border-radius: 14px;
  padding: 12px 13px;
  color: #fff;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: var(--card-bg, linear-gradient(130deg, #ab2f8d, #5f53de));
  box-shadow:
    inset 0 -36px 56px rgba(0, 0, 0, 0.28),
    0 7px 18px rgba(0, 0, 0, 0.18);
}

.video-tag {
  margin: 0 0 4px;
  font-size: 10px;
  color: rgba(255, 255, 255, 0.9);
}

.video-title {
  margin: 0;
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.video-meta {
  margin: 5px 0 0;
  font-size: 10px;
  color: rgba(255, 255, 255, 0.9);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.carousel-dots {
  margin-top: 10px;
  display: flex;
  justify-content: center;
  gap: 8px;
}

.carousel-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.28);
  transition: transform 0.2s ease, background 0.2s ease;
}

.carousel-dot.active {
  background: rgba(255, 255, 255, 0.94);
  transform: scale(1.15);
}

.features,
.faq {
  padding: 50px 0;
}

h2 {
  margin: 0 0 16px;
  font-size: clamp(24px, 3vw, 30px);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.feature {
  border: 1px solid var(--panel-border);
  border-radius: 14px;
  padding: 18px;
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(8px);
}

.feature h3 {
  margin: 0 0 8px;
  font-size: 18px;
}

.feature p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-soft);
}

.faq details {
  border: 1px solid var(--panel-border);
  border-radius: 14px;
  margin-bottom: 12px;
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.045);
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
}

.faq p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-soft);
}

.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0 30px;
}

.footer-wrap {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--text-soft);
}

@media (max-width: 980px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 24px 20px;
  }

  .hero-card {
    justify-items: start;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .brand-text {
    font-size: 16px;
  }

  h1 {
    font-size: clamp(34px, 8.4vw, 42px);
  }

  .subtitle {
    font-size: 24px;
  }

  .desc {
    font-size: 15px;
  }

  .btn {
    width: 100%;
    font-size: 17px;
  }

  .screen-head {
    font-size: 18px;
  }
}