:root {
  --bg: #f3f3f3;
  --ink: #1a1a1a;
  --ink-soft: #5d5d5d;
  --accent: #1748d0;
  --card: rgba(255, 255, 255, 0.72);
  --card-stroke: rgba(0, 0, 0, 0.06);
  --bloom-a: rgba(58, 123, 255, 0.55);
  --bloom-b: rgba(122, 92, 255, 0.40);
  --bloom-c: rgba(0, 183, 255, 0.45);
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #202020;
    --ink: #ffffff;
    --ink-soft: #c5c5c5;
    --accent: #99c1ff;
    --card: rgba(255, 255, 255, 0.06);
    --card-stroke: rgba(255, 255, 255, 0.08);
    --bloom-a: rgba(58, 123, 255, 0.45);
    --bloom-b: rgba(122, 92, 255, 0.32);
    --bloom-c: rgba(0, 183, 255, 0.30);
  }
}

* { box-sizing: border-box; }

html, body { margin: 0; min-height: 100%; }

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--bg);
  color: var(--ink);
  font-family: "Segoe UI Variable Display", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Fondo «bloom» como el de la app: manchas difusas que se funden con la página. */
.bloom {
  position: fixed;
  inset: -20vh -10vw auto;
  height: 85vh;
  background:
    radial-gradient(45% 60% at 18% 30%, var(--bloom-a), transparent 70%),
    radial-gradient(40% 55% at 55% 10%, var(--bloom-b), transparent 70%),
    radial-gradient(45% 60% at 88% 35%, var(--bloom-c), transparent 70%);
  filter: blur(40px);
  -webkit-mask-image: linear-gradient(to bottom, #000 45%, transparent);
  mask-image: linear-gradient(to bottom, #000 45%, transparent);
  pointer-events: none;
  z-index: 0;
}

main {
  position: relative;
  z-index: 1;
  flex: 1;
  width: 100%;
  max-width: 720px;
  padding: 18vh 16px 48px;
  text-align: center;
}

.logo {
  width: 112px;
  height: 112px;
  filter: drop-shadow(0 12px 28px rgba(23, 72, 208, 0.35));
}

h1 {
  margin: 20px 0 8px;
  font-size: clamp(44px, 9vw, 68px);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.tagline {
  margin: 0 auto;
  max-width: 34ch;
  font-size: clamp(18px, 3.6vw, 22px);
  line-height: 1.4;
  color: var(--ink-soft);
}

.soon {
  display: inline-block;
  margin: 28px 0 40px;
  padding: 8px 18px;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--card-stroke);
  color: var(--accent);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.features {
  list-style: none;
  margin: 0 auto;
  padding: 0;
  display: grid;
  gap: 8px;
  max-width: 520px;
  text-align: left;
}

.features li {
  padding: 14px 16px 14px 46px;
  border-radius: 8px;
  background: var(--card);
  border: 1px solid var(--card-stroke);
  font-size: 15px;
  line-height: 1.45;
  position: relative;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.features li::before {
  content: "";
  position: absolute;
  left: 16px;
  top: 50%;
  width: 16px;
  height: 16px;
  margin-top: -8px;
  border-radius: 50%;
  background: var(--accent) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4.5 8.3l2.3 2.3 4.7-5' fill='none' stroke='white' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / 14px no-repeat;
}

footer {
  position: relative;
  z-index: 1;
  padding: 24px 16px 32px;
  font-size: 13px;
  color: var(--ink-soft);
}

@media (prefers-reduced-motion: no-preference) {
  main > * { animation: rise 0.6s cubic-bezier(0.1, 0.9, 0.2, 1) both; }
  main > *:nth-child(2) { animation-delay: 0.05s; }
  main > *:nth-child(3) { animation-delay: 0.1s; }
  main > *:nth-child(4) { animation-delay: 0.15s; }
  main > *:nth-child(5) { animation-delay: 0.2s; }
  @keyframes rise { from { opacity: 0; transform: translateY(16px); } }
}