*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg: #fafafa;
  --text: #2d2d2d;
  --primary: #1a1a2e;
  --accent: #e94560;
  --card-bg: #ffffff;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(0,0,0,0.06);
}

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 40px;
  background: rgba(250,250,250,0.85);
  backdrop-filter: blur(12px);
  z-index: 100;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--primary);
}

.nav-cta {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  border: 1.5px solid var(--accent);
  padding: 6px 20px;
  border-radius: 24px;
  transition: background 0.2s, color 0.2s;
}

.nav-cta:hover {
  background: var(--accent);
  color: #fff;
}

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 120px 24px 80px;
}

.hero-title {
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 900;
  letter-spacing: -2px;
  color: var(--primary);
  margin-bottom: 16px;
}

.hero-slogan {
  font-size: clamp(1rem, 2.5vw, 1.35rem);
  color: #666;
  max-width: 540px;
  margin-bottom: 40px;
}

.hero-btn {
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  background: var(--primary);
  padding: 14px 36px;
  border-radius: 32px;
  text-decoration: none;
  transition: transform 0.2s, box-shadow 0.2s;
}

.hero-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(26,26,46,0.25);
}

/* Features */
.features {
  padding: 80px 24px;
  max-width: 960px;
  margin: 0 auto;
}

.section-title {
  text-align: center;
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 48px;
  color: var(--primary);
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 36px 28px;
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s, transform 0.5s, box-shadow 0.3s;
}

.card.visible {
  opacity: 1;
  transform: translateY(0);
}

.card:hover {
  box-shadow: 0 8px 32px rgba(0,0,0,0.1);
}

.card-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.card-desc {
  font-size: 0.95rem;
  color: #666;
  line-height: 1.7;
}

/* CTA */
.cta {
  text-align: center;
  padding: 100px 24px;
  background: var(--primary);
  color: #fff;
}

.cta-title {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: 800;
  margin-bottom: 12px;
}

.cta-desc {
  font-size: 1.05rem;
  opacity: 0.8;
  margin-bottom: 36px;
}

.cta-btn {
  display: inline-block;
  font-size: 1rem;
  font-weight: 600;
  color: var(--primary);
  background: #fff;
  padding: 14px 40px;
  border-radius: 32px;
  text-decoration: none;
  transition: transform 0.2s, box-shadow 0.2s;
}

.cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255,255,255,0.3);
}

/* Footer */
.footer {
  text-align: center;
  padding: 24px;
  font-size: 0.8rem;
  color: #999;
}