:root {
  --bg: #08111f;
  --text: #f4f8ff;
  --muted: rgba(236, 242, 255, 0.74);
  --line: rgba(255, 255, 255, 0.1);
  --panel: rgba(12, 24, 42, 0.84);
  --primary: #4f8cff;
  --primary-strong: #2f6dff;
  --accent: #7a5cff;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(circle at top left, rgba(79, 140, 255, 0.22), transparent 28%),
    linear-gradient(180deg, #0a1220 0%, #08111f 100%);
  color: var(--text);
  font-family: Inter, "PingFang SC", Arial, sans-serif;
}

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

.landing-shell {
  width: min(1120px, 100%);
  margin: 0 auto;
  padding: 24px 16px 48px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 420px);
  gap: 24px;
  align-items: center;
  min-height: calc(100svh - 72px);
}

.brand-bar,
.hero__chips,
.hero__actions,
.tip-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.brand-bar {
  align-items: center;
  justify-content: space-between;
}

.brand-mark,
.brand-channel,
.announcement,
.feature-card,
.device-card,
.hero__meta > div,
.notice-card {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 24px;
  backdrop-filter: blur(16px);
}

.brand-mark {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  padding: 14px 18px;
}

.brand-mark strong {
  font-size: 1.3rem;
}

.brand-mark span,
.brand-channel,
.announcement,
.hero__copy p,
.section-head p,
.feature-card p,
.notice-card p,
.player-state p {
  color: var(--muted);
}

.brand-channel {
  min-height: 46px;
  padding: 0 16px;
  display: inline-flex;
  align-items: center;
  font-weight: 800;
}

.announcement {
  margin: 18px 0 14px;
  padding: 12px 16px;
  line-height: 1.65;
}

.hero__eyebrow,
.section-head span {
  display: inline-block;
  color: #9ebfff;
  font-weight: 800;
  font-size: 0.84rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.hero__copy h1 {
  margin: 0 0 16px;
  font-size: clamp(2.5rem, 7vw, 4.4rem);
  line-height: 0.98;
}

.hero__copy p,
.section-head p,
.feature-card p,
.notice-card p {
  margin: 0;
  line-height: 1.72;
}

.hero__chips {
  margin: 20px 0 0;
}

.hero__chips span,
.badge,
.tip-strip span {
  padding: 9px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--line);
  font-size: 0.88rem;
}

.hero__actions {
  margin: 26px 0;
}

.button {
  min-height: 50px;
  padding: 0 22px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
}

.button--primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-strong));
}

.button--ghost {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--line);
}

.hero__meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.hero__meta > div {
  padding: 16px;
}

.hero__meta span {
  display: block;
  color: var(--muted);
  font-size: 0.88rem;
  margin-bottom: 8px;
}

.device-card {
  padding: 16px;
  min-height: 560px;
}

.device-card__screen {
  height: 100%;
  border-radius: 28px;
  padding: 24px;
  background:
    radial-gradient(circle at top, rgba(79, 140, 255, 0.28), transparent 28%),
    linear-gradient(180deg, #19345a 0%, #0e1c31 100%);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 20px;
}

.badge {
  display: inline-flex;
  align-self: flex-start;
  min-height: 32px;
  align-items: center;
  font-weight: 800;
}

.player-state {
  display: grid;
  gap: 10px;
}

.player-state strong {
  font-size: 1.25rem;
}

.device-download h2 {
  margin: 0 0 10px;
  font-size: 2rem;
}

.device-download p {
  margin: 0;
}

.notice-stack {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.notice-card {
  padding: 16px;
}

.notice-card span {
  display: block;
  color: #9ebfff;
  font-size: 0.82rem;
  font-weight: 800;
  margin-bottom: 8px;
  text-transform: uppercase;
}

.notice-card strong {
  display: block;
  margin-bottom: 8px;
}

.tip-strip {
  margin-top: 18px;
}

.details {
  margin-top: 24px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.feature-card {
  padding: 22px;
}

.feature-card strong {
  display: block;
  font-size: 1.04rem;
  margin-bottom: 10px;
}

@media (max-width: 900px) {
  .hero,
  .feature-grid,
  .hero__meta {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 12px;
  }

  .device-card {
    min-height: 420px;
  }
}

@media (max-width: 680px) {
  .landing-shell {
    padding: 16px 14px 32px;
  }

  .brand-bar {
    align-items: stretch;
  }

  .brand-mark,
  .brand-channel,
  .button {
    width: 100%;
    justify-content: center;
  }
}