/* === Reset & Base === */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg: #0a0a0f;
  --bg-card: #12121a;
  --bg-card-hover: #1a1a26;
  --text: #e8e8ed;
  --text-dim: #9898a8;
  --accent: #6c5ce7;
  --accent-light: #a29bfe;
  --gradient: linear-gradient(135deg, #6c5ce7, #a29bfe);
  --radius: 12px;
  --radius-sm: 8px;
}

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Noto Sans SC', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
a { color: var(--accent-light); text-decoration: none; }
a:hover { text-decoration: underline; }

/* === Buttons === */
.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}
.btn-primary { background: var(--gradient); color: #fff; }
.btn-primary:hover { opacity: 0.9; text-decoration: none; transform: translateY(-1px); }
.btn-outline { border: 1.5px solid var(--accent); color: var(--accent-light); background: transparent; }
.btn-outline:hover { background: rgba(108, 92, 231, 0.1); text-decoration: none; }
.btn-lg { padding: 18px 40px; font-size: 1.1rem; }

/* === Hero === */
.hero {
  text-align: center;
  padding: 120px 24px 80px;
  background: radial-gradient(ellipse at 50% 0%, rgba(108, 92, 231, 0.15) 0%, transparent 60%);
}
.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 20px;
  background: rgba(108, 92, 231, 0.15);
  color: var(--accent-light);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 24px;
}
.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
}
.accent { color: var(--accent-light); }
.hero-sub {
  font-size: 1.2rem;
  color: var(--text-dim);
  max-width: 560px;
  margin: 0 auto 32px;
}
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.hero-platforms { margin-top: 24px; color: var(--text-dim); font-size: 0.9rem; }

/* === Stats === */
.stats { padding: 48px 0; border-bottom: 1px solid rgba(255,255,255,0.06); }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.stat-number { display: block; font-size: 2rem; font-weight: 800; color: var(--accent-light); }
.stat-label { color: var(--text-dim); font-size: 0.9rem; }

/* === Sections === */
.section-title {
  text-align: center;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 48px;
}

/* === Features === */
.features { padding: 80px 0; }
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius);
  padding: 32px;
  transition: background 0.2s, border-color 0.2s;
}
.feature-card:hover { background: var(--bg-card-hover); border-color: rgba(108, 92, 231, 0.3); }
.feature-icon { font-size: 2rem; margin-bottom: 16px; }
.feature-card h3 { font-size: 1.15rem; margin-bottom: 8px; }
.feature-card p { color: var(--text-dim); font-size: 0.95rem; line-height: 1.6; }

/* === Use Cases === */
.usecases { padding: 80px 0; background: rgba(255,255,255,0.015); }
.usecases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.usecase-card {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius);
  padding: 32px;
}
.usecase-card h3 { margin-bottom: 8px; font-size: 1.1rem; }
.usecase-card p { color: var(--text-dim); font-size: 0.95rem; }

/* === Quick Start === */
.quickstart { padding: 80px 0; }
.steps { max-width: 680px; margin: 0 auto; }
.step {
  display: flex;
  gap: 24px;
  margin-bottom: 36px;
  align-items: flex-start;
}
.step-num {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.2rem;
}
.step-content h3 { margin-bottom: 4px; }
.step-content p { color: var(--text-dim); font-size: 0.95rem; }

/* === Tips === */
.tips { padding: 80px 0; background: rgba(255,255,255,0.015); }
.tips-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.tip-card {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius);
  padding: 28px;
}
.tip-card h4 { margin-bottom: 12px; font-size: 1.05rem; }
.tip-card ul { list-style: none; }
.tip-card li {
  color: var(--text-dim);
  font-size: 0.9rem;
  padding: 4px 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}
.tip-card li:last-child { border-bottom: none; }

/* === CTA === */
.cta {
  text-align: center;
  padding: 80px 24px;
  background: radial-gradient(ellipse at 50% 100%, rgba(108, 92, 231, 0.12) 0%, transparent 60%);
}
.cta h2 { font-size: 2rem; margin-bottom: 12px; }
.cta p { color: var(--text-dim); margin-bottom: 32px; font-size: 1.1rem; }

/* === Footer === */
.footer {
  padding: 40px 24px;
  text-align: center;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.footer-links { display: flex; gap: 24px; justify-content: center; flex-wrap: wrap; margin-bottom: 16px; }
.footer-links a { color: var(--text-dim); font-size: 0.9rem; }
.footer-links a:hover { color: var(--accent-light); }
.footer-note { color: var(--text-dim); font-size: 0.8rem; }

/* === Responsive === */
@media (max-width: 768px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: 1fr; }
  .usecases-grid { grid-template-columns: 1fr; }
  .tips-grid { grid-template-columns: 1fr; }
  .hero { padding: 80px 24px 60px; }
}