:root {
  color-scheme: light dark;
  --accent-1: #0a84ff;
  --accent-2: #00c7be;
  --bg: #f2f8fd;
  --text: #1d1d1f;
  --muted: #5f6b76;
  --card: rgba(255, 255, 255, 0.78);
  --card-border: rgba(13, 60, 97, 0.08);
  --shadow: 0 10px 30px rgba(10, 80, 140, 0.10);
  --glow: rgba(10, 132, 255, 0.45);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1420;
    --text: #f2f6fa;
    --muted: #94a3b3;
    --card: rgba(23, 33, 48, 0.72);
    --card-border: rgba(140, 190, 255, 0.10);
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
    --glow: rgba(10, 132, 255, 0.55);
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  text-align: center;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.waves {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(600px 420px at 15% -5%, rgba(10, 132, 255, 0.16), transparent 70%),
    radial-gradient(700px 480px at 85% 0%, rgba(0, 199, 190, 0.14), transparent 70%),
    radial-gradient(800px 600px at 50% 115%, rgba(10, 132, 255, 0.10), transparent 70%);
}

.hero { padding: 56px 16px 8px; }

.logo {
  width: 84px;
  height: 84px;
  border-radius: 22px;
  box-shadow: var(--shadow);
  animation: float 5s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-7px); }
}

h1 {
  margin: 18px 0 6px;
  font-size: clamp(30px, 6vw, 42px);
  letter-spacing: -0.8px;
  background: linear-gradient(120deg, var(--accent-1), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.tagline {
  margin: 0 auto;
  max-width: 460px;
  font-size: 17px;
  color: var(--muted);
}

.magic { margin: 44px 0 30px; }

.blow {
  position: relative;
  width: 152px;
  height: 152px;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  background: linear-gradient(140deg, var(--accent-1), var(--accent-2));
  box-shadow: 0 14px 38px var(--glow);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  -webkit-tap-highlight-color: transparent;
}

.blow:hover { transform: scale(1.04); }
.blow:active { transform: scale(0.95); }

.blow .icon {
  width: 72px;
  height: 72px;
  fill: #fff;
  stroke: #fff;
  vertical-align: middle;
}

.blow .rings,
.blow .rings::before,
.blow .rings::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid var(--accent-1);
  opacity: 0;
  pointer-events: none;
}

.blow.active .rings,
.blow.active .rings::before,
.blow.active .rings::after {
  animation: ripple 1.8s cubic-bezier(0.2, 0.6, 0.4, 1) infinite;
}

.blow.active .rings::before { animation-delay: 0.6s; }
.blow.active .rings::after { animation-delay: 1.2s; }

@keyframes ripple {
  0% { transform: scale(1); opacity: 0.7; }
  100% { transform: scale(1.9); opacity: 0; }
}

.blow.active .icon .wave { animation: pulse 0.9s ease-in-out infinite; }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.25; }
}

.hint {
  margin: 22px auto 10px;
  font-size: 15px;
  color: var(--muted);
}

.chip {
  display: inline-block;
  margin: 0;
  padding: 7px 16px;
  font-size: 13.5px;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--card-border);
  color: var(--muted);
  backdrop-filter: blur(10px);
}

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 12px 16px 30px;
}

h2 {
  font-size: 24px;
  letter-spacing: -0.4px;
  margin: 36px 0 20px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

@media (max-width: 640px) {
  .grid { grid-template-columns: 1fr; }
}

.card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
  padding: 22px 20px;
}

.steps .card { text-align: center; }
.steps .emoji { font-size: 34px; display: block; }

.steps h3 {
  margin: 10px 0 6px;
  font-size: 17px;
  letter-spacing: -0.2px;
}

.steps p {
  margin: 0;
  font-size: 14.5px;
  color: var(--muted);
}

.about {
  margin: 28px auto 0;
  text-align: left;
  padding: 26px 28px;
}

.about p { margin: 0 0 14px; font-size: 15.5px; }
.about p:last-child { margin-bottom: 0; }
.about small { color: var(--muted); }

.faq { margin-top: 8px; }
.faq .card { text-align: left; margin: 0 0 14px; padding: 20px 24px; }
.faq h3 { margin: 0 0 8px; font-size: 16.5px; letter-spacing: -0.2px; }
.faq p { margin: 0; font-size: 15px; color: var(--muted); }

a { color: var(--accent-1); text-decoration: none; }
a:hover { text-decoration: underline; }

footer {
  padding: 26px 16px 44px;
  font-size: 13.5px;
  color: var(--muted);
}

footer p { margin: 0 0 6px; }
.langs a { padding: 0 2px; }

.notfound { padding: 90px 16px 40px; }
.notfound h1 { font-size: 64px; }
.notfound .tagline { font-size: 18px; }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}