:root {
  font-family: "Manrope", system-ui, sans-serif;
  color: #143d67;
  background: #e9f8ff;
  font-synthesis: none;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  background:
    radial-gradient(circle at 50% -10%, rgba(255,255,255,.95) 0 18%, transparent 48%),
    linear-gradient(150deg, #ddf5ff 0%, #f8fcff 52%, #fff3d9 100%);
}

.landing {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
  display: grid;
  place-items: center;
  padding: 40px 20px 52px;
}

.landing::before,
.landing::after {
  content: "";
  position: absolute;
  width: 260px;
  height: 34px;
  border-radius: 50%;
  background: rgba(255,255,255,.72);
  filter: blur(1px);
}

.landing::before { top: 11%; left: -55px; transform: rotate(-3deg); }
.landing::after { bottom: 12%; right: -80px; transform: rotate(4deg); }

.glow {
  position: absolute;
  width: 380px;
  aspect-ratio: 1;
  border-radius: 50%;
  filter: blur(70px);
  opacity: .48;
}

.glow-a { background: #77d9ff; left: -150px; top: 28%; }
.glow-b { background: #ffc45c; right: -170px; bottom: -120px; }

.card {
  position: relative;
  z-index: 1;
  width: min(100%, 900px);
  text-align: center;
}

.eyebrow {
  display: inline-block;
  margin: 0 0 13px;
  padding: 8px 16px;
  color: #17649c;
  background: rgba(255,255,255,.68);
  border: 1px solid rgba(52,143,195,.18);
  border-radius: 999px;
  font-size: clamp(.76rem, 1.5vw, .9rem);
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  color: #174e81;
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 1.02;
  letter-spacing: -.045em;
}

h1 span { color: #0786cb; }

.book-wrap {
  width: min(86vw, 590px);
  margin: -4px auto -24px;
}

.book-wrap img {
  display: block;
  width: 100%;
  height: auto;
  filter: saturate(1.03) contrast(1.02) drop-shadow(18px 22px 18px rgba(47, 70, 88, .28));
  transition: transform .35s ease;
}

.book-wrap img:hover { transform: translateY(-5px) rotate(-.4deg); }

.intro {
  width: min(100%, 650px);
  margin: 0 auto 24px;
  color: #406687;
  font-size: clamp(.98rem, 2vw, 1.15rem);
  line-height: 1.65;
  font-weight: 600;
}

.actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 13px;
}

.button {
  min-height: 56px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 14px 22px;
  border-radius: 15px;
  text-decoration: none;
  font-size: .98rem;
  font-weight: 800;
  box-shadow: 0 10px 24px rgba(21,68,105,.16);
  transition: transform .18s ease, box-shadow .18s ease;
}

.button:hover { transform: translateY(-3px); box-shadow: 0 15px 30px rgba(21,68,105,.2); }
.button:focus-visible { outline: 4px solid rgba(0,137,205,.25); outline-offset: 3px; }
.button svg { width: 22px; height: 22px; flex: 0 0 auto; }
.button-video { color: #fff; background: linear-gradient(135deg, #f28b22, #ef6c1d); }
.button-site { color: #fff; background: linear-gradient(135deg, #146a9e, #064d7b); }

@media (max-width: 560px) {
  .landing { padding: 28px 16px 36px; }
  .book-wrap { width: min(100vw, 520px); margin: -10px auto -25px; }
  .intro { margin-bottom: 20px; }
  .actions { display: grid; }
  .button { width: min(88vw, 360px); }
}

@media (prefers-reduced-motion: reduce) {
  .book-wrap img, .button { transition: none; }
}