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

:root {
  --green: #2ecc71;
  --blue: #29abe2;
  --cyan: #00c8ff;
  --bg-dark: #080d1a;
  --bg-card: #0f1629;
  --bg-nav: rgba(8, 13, 26, 0.92);
  --text-primary: #ffffff;
  --text-secondary: #8b9bb4;
  --border: rgba(41, 171, 226, 0.15);
}

html {
  scroll-behavior: smooth;
}

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

/* NAV */
nav {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 100;
  background: var(--bg-nav);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo img {
  height: 36px;
  width: auto;
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 15px;
  transition: color 0.2s;
}

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

/* HERO */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 100px 24px 60px;
  background: radial-gradient(ellipse at 70% 50%, rgba(41, 171, 226, 0.08) 0%, transparent 60%),
              radial-gradient(ellipse at 30% 80%, rgba(46, 204, 113, 0.06) 0%, transparent 50%);
}

.hero-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--cyan);
  background: rgba(0, 200, 255, 0.08);
  border: 1px solid rgba(0, 200, 255, 0.2);
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.hero h1 span {
  background: linear-gradient(135deg, var(--green), var(--blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-tagline {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 36px;
  max-width: 420px;
}

.hero-cta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.appstore-badge {
  height: 48px;
  width: auto;
  transition: opacity 0.2s, transform 0.2s;
}

.appstore-badge:hover {
  opacity: 0.85;
  transform: translateY(-1px);
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.phone-wrapper {
  position: relative;
  width: 260px;
}

.phone-frame {
  width: 100%;
  height: auto;
  display: block;
  position: relative;
  z-index: 2;
}

.phone-screen {
  position: absolute;
  top: 3.5%;
  left: 5.5%;
  width: 89%;
  height: 93%;
  border-radius: 40px;
  overflow: hidden;
  z-index: 1;
}

.phone-screen img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ECOSYSTEM SECTION */
.section-ecosystem {
  padding: 80px 24px;
  border-top: 1px solid var(--border);
}

.section-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.section-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 12px;
}

.section-ecosystem h2 {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.section-ecosystem p {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 600px;
  margin-bottom: 48px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px 24px;
  transition: border-color 0.2s, transform 0.2s;
}

.feature-card:hover {
  border-color: rgba(41, 171, 226, 0.4);
  transform: translateY(-2px);
}

.feature-icon {
  font-size: 28px;
  margin-bottom: 12px;
}

.feature-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0;
}

/* FOOTER */
footer {
  border-top: 1px solid var(--border);
  padding: 40px 24px;
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-logo img {
  height: 28px;
  width: auto;
  opacity: 0.7;
}

.footer-copy {
  font-size: 13px;
  color: var(--text-secondary);
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-tagline {
    margin: 0 auto 36px;
  }

  .hero-cta {
    justify-content: center;
  }

  .hero-visual {
    order: -1;
  }

  .phone-wrapper {
    width: 200px;
  }

  .nav-links {
    display: none;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}