:root {
  --bg: #081f2d;
  --text: #f8fbff;
  --muted: #d0dbe8;
  --primary: #14b8a6;
  --primary-dark: #0d9488;
}

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

html,
body {
  width: 100%;
  height: 100%;
}

body {
  font-family: "Inter", sans-serif;
  color: var(--text);
  overflow: hidden;
}

.presell {
  position: relative;
  width: 100vw;
  height: 100vh;
  display: grid;
  place-items: center;
  padding: 18px;
  background: url("../back-hero.jpg") center/cover no-repeat;
}

.overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(7, 31, 45, 0.85), rgba(8, 47, 73, 0.62));
}

.card {
  position: relative;
  z-index: 1;
  width: min(760px, 100%);
  background: rgba(8, 31, 45, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(4px);
  border-radius: 22px;
  padding: 26px;
  text-align: center;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.25);
}

.logo {
  width: 130px;
  margin: 0 auto 12px;
}

.tag {
  display: inline-block;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.12);
  font-size: 0.84rem;
  margin-bottom: 12px;
}

h1 {
  font-size: clamp(1.6rem, 2.5vw, 2.4rem);
  line-height: 1.15;
  margin-bottom: 12px;
}

.copy {
  color: var(--muted);
  font-size: clamp(0.96rem, 1.3vw, 1.08rem);
  line-height: 1.55;
  margin-bottom: 20px;
}

.actions {
  display: grid;
  gap: 10px;
}

.btn {
  text-decoration: none;
  font-weight: 700;
  border-radius: 12px;
  padding: 13px 16px;
}

.btn-primary {
  background: linear-gradient(180deg, var(--primary), var(--primary-dark));
  color: #032a26;
}

.btn-ghost {
  border: 1px solid rgba(255, 255, 255, 0.42);
  color: var(--text);
}

.note {
  margin-top: 14px;
  font-size: 0.86rem;
  color: rgba(255, 255, 255, 0.82);
}

@media (max-width: 640px) {
  .card {
    padding: 20px 16px;
    border-radius: 16px;
  }

  .logo {
    width: 108px;
  }
}