:root {
  --bg: #070b14;
  --bg-2: #0b1220;
  --surface: rgba(255, 255, 255, 0.06);
  --surface-2: rgba(255, 255, 255, 0.09);
  --border: rgba(255, 255, 255, 0.14);
  --text: #f3f6fb;
  --muted: #a9b2c3;
  --brand: #ff7a3d;
  --brand-2: #5aa2ff;
  --ok: #6cd4be;
  --shadow: 0 14px 40px rgba(0, 0, 0, 0.35);
  --radius: 18px;
  --max: 1120px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "SF Pro Display", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(90, 162, 255, 0.22), transparent 55%),
    radial-gradient(900px 520px at 10% -20%, rgba(255, 122, 61, 0.25), transparent 50%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.container {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(10px);
  background: rgba(7, 11, 20, 0.5);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.2px;
}

.brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  background: linear-gradient(160deg, rgba(255,122,61,0.9), rgba(90,162,255,0.85));
  box-shadow: 0 8px 20px rgba(255, 122, 61, 0.35);
}

.nav-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 0.95rem;
}

.nav-links a:hover { color: var(--text); }

.hero {
  padding: 5.5rem 0 3rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2rem;
  align-items: center;
}

.kicker {
  display: inline-block;
  color: var(--ok);
  font-size: 0.86rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

h1 {
  margin: 0;
  line-height: 1.08;
  font-size: clamp(2rem, 4.2vw, 3.55rem);
}

.lead {
  margin-top: 1rem;
  color: var(--muted);
  max-width: 58ch;
  line-height: 1.75;
}

.cta-row {
  margin-top: 1.7rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.62rem 1rem;
  border-radius: 12px;
  border: 1px solid transparent;
  font-weight: 600;
  transition: transform 0.15s ease, opacity 0.15s ease;
}

.btn:hover { transform: translateY(-1px); }

.btn-primary {
  background: linear-gradient(135deg, var(--brand), #ff9560);
  color: #fff;
  box-shadow: 0 8px 24px rgba(255, 122, 61, 0.35);
}

.btn-ghost {
  border-color: var(--border);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
}

.mock {
  border: 1px solid var(--border);
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.02));
  padding: 1rem;
  box-shadow: var(--shadow);
}

.mock-screen {
  border-radius: 18px;
  border: 1px solid rgba(255,255,255,0.12);
  background:
    radial-gradient(420px 220px at 70% 0%, rgba(90,162,255,0.2), transparent 60%),
    radial-gradient(420px 220px at 20% 0%, rgba(255,122,61,0.25), transparent 60%),
    #0d1422;
  padding: 1rem;
}

.mock-pill {
  display: inline-block;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.2);
  padding: 0.2rem 0.6rem;
  font-size: 0.75rem;
  color: var(--muted);
}

.mock-grid {
  margin-top: 0.9rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.7rem;
}

.metric {
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.04);
  padding: 0.75rem;
}

.metric .label {
  color: var(--muted);
  font-size: 0.78rem;
}

.metric .value {
  margin-top: 0.35rem;
  font-size: 1.15rem;
  font-weight: 700;
}

.section {
  padding: 1.2rem 0 1.8rem;
}

.section h2 {
  font-size: clamp(1.35rem, 2.4vw, 2rem);
  margin: 0 0 0.7rem;
}

.section p.sub {
  margin: 0;
  color: var(--muted);
}

.cards {
  margin-top: 1.2rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
}

.card {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  padding: 1rem;
  box-shadow: var(--shadow);
}

.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.06rem;
}

.card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
  font-size: 0.95rem;
}

.pricing {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
}

.price-card {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  padding: 1rem;
}

.price-card.pop {
  border-color: rgba(255, 122, 61, 0.6);
  background: linear-gradient(180deg, rgba(255,122,61,0.18), rgba(255,255,255,0.05));
}

.price {
  margin-top: 0.35rem;
  font-size: 1.5rem;
  font-weight: 700;
}

.badge {
  display: inline-block;
  margin-top: 0.3rem;
  font-size: 0.78rem;
  color: var(--ok);
}

.support {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 1rem;
}

.panel {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 1rem;
}

.panel p { color: var(--muted); margin: 0.5rem 0 0; line-height: 1.7; }

.inline-links {
  margin-top: 0.9rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.inline-links a {
  color: #d4def5;
  border-bottom: 1px dashed rgba(212, 222, 245, 0.4);
}

.footer {
  margin-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 1rem 0 2rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.legal-wrap {
  padding: 2.8rem 0;
}

.legal-card {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1.15rem;
}

.legal-card h1 {
  font-size: clamp(1.5rem, 2.4vw, 2.3rem);
}

.legal-card h2 {
  margin-top: 1.35rem;
  margin-bottom: 0.55rem;
  font-size: 1.05rem;
}

.legal-card p,
.legal-card li {
  color: var(--muted);
  line-height: 1.8;
}

.legal-card ul { padding-left: 1.2rem; }

@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr; }
  .pricing { grid-template-columns: 1fr; }
  .support { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 0.65rem 0;
  }

  .nav-links {
    width: 100%;
    flex-wrap: nowrap;
    white-space: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 0.2rem;
    gap: 0.85rem;
  }

  .nav-links::-webkit-scrollbar {
    height: 0;
    width: 0;
  }
}