html, body {
  height: 100%;
  margin: 0;
  padding: 0;
  font-family: 'Inter', 'Segoe UI', Arial, sans-serif;
  background: #0d1022;
  color: #f7faff;
}

/* ===== Header & Navigation ===== */
header, footer {
  background-color: #181b3d;
  padding: 1.1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo img.hero-logo {
  height: 48px;
}
nav a {
  margin-left: 1rem;
  text-decoration: none;
  color: #b6bad8;
  font-weight: 600;
  font-size: 1.1rem;
  letter-spacing: 0.5px;
  border-radius: 6px;
  padding: 0.35rem 0.95rem;
  transition: background 0.14s, color 0.14s;
}
nav a.btn, nav a.primary {
  background: linear-gradient(90deg, #559cff 0%, #8963ff 100%);
  color: #fff;
  margin-left: 2rem;
  box-shadow: 0 2px 14px 0 #55aaff30;
}
nav a.btn:hover, nav a.primary:hover,
.btn:hover, .btn.primary:hover {
  background: linear-gradient(90deg, #4c7bff 0%, #a875ff 100%);
  color: #fff;
}

/* ===== HERO SECTION ===== */
.hero {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  min-height: 60vh;
  padding-top: 48px;
  background: radial-gradient(circle at 50% 0%, #3965ff 0%, #8e4cff 50%, #0d1022 100%);
  overflow: hidden;
}
.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  margin-bottom: 120px;
}
.hero h1 {
  font-size: 2.8rem;
  font-weight: 900;
  letter-spacing: 1.5px;
  margin-bottom: 0.7rem;
}
.hero-sub {
  font-size: 1.45rem;
  font-weight: 700;
  margin-bottom: 1.15rem;
  background: linear-gradient(90deg, #55aaff 0%, #8963ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
          background-clip: text;
          color: transparent;
}
.hero-desc {
  color: #d7d9ef;
  margin-bottom: 2rem;
  font-size: 1.18rem;
  font-weight: 500;
  line-height: 1.4;
}
.hero .btn.primary {
  background: linear-gradient(90deg, #559cff 0%, #8963ff 100%);
  color: #fff;
  padding: 0.95rem 2.5rem;
  font-size: 1.12rem;
  margin-top: 1.2rem;
  border-radius: 10px;
  font-weight: 600;
  box-shadow: 0 4px 24px 0 #554cff30;
  border: none;
  outline: none;
  cursor: pointer;
  transition: all 0.18s;
}
.hero .btn.primary:hover {
  background: linear-gradient(90deg, #4c7bff 0%, #a875ff 100%);
  transform: translateY(-2px) scale(1.04);
  box-shadow: 0 6px 30px 0 #554cff60;
}
.wave-hero {
  display: block;
  width: 100%;
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 1;
  pointer-events: none;
  user-select: none;
}

/* ===== FEATURES SECTION ===== */
.features {
  padding: 70px 0 55px 0;
  background: linear-gradient(180deg, #131837 0%, #191b3d 100%);
  text-align: center;
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 2.1rem;
  max-width: 880px;
  margin: 0 auto;
}
.feature {
  background: linear-gradient(140deg, #1b2042 0%, #24286a 100%);
  border-radius: 22px;
  box-shadow: 0 8px 40px 0 #2d379025;
  padding: 2.1rem 1.3rem 1.7rem 1.3rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 180px;
  border: 1px solid #282f52;
  transition: transform 0.2s, box-shadow 0.2s;
}
.feature:hover {
  transform: translateY(-5px) scale(1.025);
  box-shadow: 0 16px 60px 0 #55aaff30;
}
.feature-icon {
  font-size: 2.2rem;
  margin-bottom: 1rem;
  filter: drop-shadow(0 4px 12px #559cff65);
}
.feature h2 {
  font-size: 1.18rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
  color: #e4e8ff;
}
.feature p {
  font-size: 1rem;
  color: #b6bad8;
  margin: 0;
}

/* ===== TESTIMONIALS ===== */
.testimonials {
  background: linear-gradient(180deg, #181c39 0%, #101326 100%);
  padding: 58px 0 58px 0;
}
.testimonials h2 {
  text-align: center;
  margin-bottom: 2rem;
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: 1px;
}
.testimonials ul {
  list-style: none;
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  padding: 0;
  margin: 0 auto;
  max-width: 880px;
}
.testimonials blockquote {
  font-style: italic;
  color: #aaa;
  font-size: 1.06rem;
  margin: 0 0 0.5rem 0;
}
.testimonials cite {
  display: block;
  font-size: 0.96rem;
  color: #55aaff;
}

/* ===== App Banner ===== */
.apps {
  padding: 50px 0 46px 0;
  background: linear-gradient(180deg, #1f224c 0%, #161732 100%);
  text-align: center;
}
.apps h2 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  font-weight: 700;
  color: #fff;
}
.apps .app-links a {
  display: inline-block;
  margin: 0.6rem;
  padding: 0.7rem 1.3rem;
  background: #242a5a;
  color: #55aaff;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.06rem;
  letter-spacing: 0.2px;
  box-shadow: 0 4px 18px 0 #1e8ef080;
  transition: background 0.15s, color 0.15s, transform 0.15s;
}
.apps .app-links a:hover {
  background: #383f89;
  color: #fff;
  transform: translateY(-2px) scale(1.05);
}

/* ===== Callout ===== */
.callout {
  padding: 3.7rem 2rem;
  background: linear-gradient(160deg, #12161d, #181f3a);
  text-align: center;
}
.callout h2 {
  margin-bottom: 1.4rem;
  font-size: 1.8rem;
  font-weight: 700;
  color: #fff;
}
.callout .btn {
  background: linear-gradient(90deg, #559cff 0%, #8963ff 100%);
  padding: 0.82rem 2.2rem;
  color: white;
  font-size: 1.1rem;
  text-decoration: none;
  border-radius: 7px;
  font-weight: 700;
  border: none;
  transition: background 0.18s, transform 0.18s;
  box-shadow: 0 4px 24px 0 #554cff30;
}
.callout .btn:hover {
  background: linear-gradient(90deg, #4c7bff 0%, #a875ff 100%);
  transform: translateY(-2px) scale(1.035);
}

/* ===== Footer Wave ===== */
.wave-footer {
  display: block;
  width: 100%;
  margin-bottom: -6px;
  pointer-events: none;
  user-select: none;
}

/* ===== Footer ===== */
footer {
  text-align: center;
  padding: 1.1rem 2rem;
  font-size: 0.98rem;
  color: #99a2c1;
  background-color: #181b3d;
}

/* ===== Responsive ===== */
@media (max-width: 850px) {
  .features-grid, .testimonials ul {
    grid-template-columns: 1fr;
  }
  .hero h1 { font-size: 2rem; }
  .hero-sub { font-size: 1.1rem; }
  .hero-content { margin-bottom: 60px; }
  header, footer { flex-direction: column; gap: 1rem; }
}