:root {
  --bg-0: #060913;
  --bg-1: #090f1e;
  --panel: #0d1424;
  --panel-soft: #111b30;
  --text: #e9efff;
  --muted: #8ea0bf;
  --line: #1e2a45;
  --brand: #4f8fff;
  --brand-deep: #3476ee;
  --shadow: 0 16px 34px rgba(0, 0, 0, 0.34);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
}

body {
  font-family:
    'SF Pro Display',
    'PingFang SC',
    'Hiragino Sans GB',
    'Microsoft YaHei',
    'Segoe UI',
    sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, var(--bg-0) 0%, var(--bg-1) 100%);
}

.bg-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 12% -6%, rgba(72, 125, 255, 0.22), transparent 36%),
    radial-gradient(circle at 95% 14%, rgba(54, 197, 165, 0.16), transparent 34%),
    radial-gradient(circle at 50% 110%, rgba(137, 81, 255, 0.14), transparent 36%);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  height: 58px;
  border-bottom: 1px solid rgba(44, 61, 97, 0.72);
  backdrop-filter: blur(12px);
  background: rgba(8, 14, 28, 0.78);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 22px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-weight: 700;
  letter-spacing: 0.2px;
}

.brand-logo {
  width: 18px;
  height: 18px;
  border-radius: 4px;
  object-fit: cover;
  box-shadow: 0 2px 8px rgba(79, 143, 255, 0.3);
}

.nav-links {
  display: inline-flex;
  gap: 14px;
}

.nav-links a {
  color: #9db0d2;
  text-decoration: none;
  font-size: 13px;
  padding: 6px 8px;
  border-radius: 6px;
}

.nav-links a:hover {
  background: rgba(79, 143, 255, 0.16);
  color: #cfe1ff;
}

.container {
  width: min(1180px, calc(100% - 36px));
  margin: 28px auto 40px;
  position: relative;
}

.hero {
  border: 0;
  background: transparent;
  border-radius: 0;
  box-shadow: none;
  padding: 40px 6px 22px;
}

.eyebrow {
  margin: 0;
  color: #8fb1ff;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.hero h1 {
  margin: 10px 0 0;
  font-size: clamp(34px, 6vw, 68px);
  line-height: 1.05;
  letter-spacing: -1.2px;
  max-width: 980px;
}

.subtitle {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.7;
  max-width: 820px;
}

.hero-actions {
  margin-top: 20px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.hero-status {
  margin: 12px 0 0;
  color: #a9b8d3;
  font-size: 13px;
  line-height: 1.5;
}

.hero-status strong {
  color: #d9e6ff;
}

.btn {
  height: 40px;
  padding: 0 16px;
  border-radius: 11px;
  border: 1px solid transparent;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 600;
}

.btn-primary {
  background: var(--brand);
  color: #ffffff;
  box-shadow: 0 8px 18px rgba(52, 118, 238, 0.35);
}

.btn-primary:hover {
  background: var(--brand-deep);
}

.btn-ghost {
  border-color: #30466e;
  color: #d6e4ff;
  background: #13203a;
}

.btn-ghost:hover {
  border-color: #3f5d92;
  background: #172846;
}

.panel {
  margin-top: 44px;
  border: 0;
  background: transparent;
  border-radius: 0;
  box-shadow: none;
  padding: 0 6px;
}

.panel h2 {
  margin: 0;
  font-size: 28px;
  letter-spacing: -0.4px;
}

.panel-tip {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.panel-tip code {
  padding: 2px 6px;
  border-radius: 6px;
  background: #111c33;
  border: 1px solid #24385e;
}

.feature-grid {
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: 28px;
  row-gap: 0;
}

.feature-card {
  position: relative;
  border: 0;
  background: transparent;
  border-radius: 0;
  padding: 18px 0 16px;
}

.feature-card::before {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 1px;
  background: linear-gradient(90deg, rgba(108, 137, 188, 0.42), rgba(108, 137, 188, 0.12));
}

.feature-card:nth-child(1)::before,
.feature-card:nth-child(2)::before {
  display: none;
}

.feature-card h3 {
  margin: 0;
  font-size: 18px;
  letter-spacing: -0.2px;
}

.feature-card p {
  margin: 9px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: #94a5c4;
}

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

.shot {
  margin: 0;
  border: 0;
  border-radius: 10px;
  overflow: hidden;
  background: transparent;
}

.shot img {
  width: 100%;
  height: auto;
  min-height: 0;
  max-height: none;
  object-fit: contain;
  display: block;
  background: #111d33;
  border: 1px solid rgba(53, 78, 120, 0.68);
  border-radius: 14px;
}

.shot figcaption {
  border-top: 0;
  background: transparent;
  color: #9cb0d0;
  font-size: 12px;
  padding: 8px 2px 2px;
}

.footer {
  margin: 38px 0 26px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  color: #8fa2c4;
  font-size: 12px;
}

@media (max-width: 860px) {
  .feature-grid,
  .shot-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .feature-card:nth-child(2)::before {
    display: block;
  }

  .hero {
    padding: 30px 2px 12px;
  }

  .container {
    width: min(1120px, calc(100% - 20px));
  }

  .panel {
    padding: 0 2px;
  }
}