@import url('https://fonts.googleapis.com/css2?family=Exo+2:wght@300;400;600;800&display=swap');

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

:root {
  --ice: #e0f2fe;
  --frost: rgba(255,255,255,0.15);
  --blue: #0ea5e9;
  --deep: #0c4a6e;
  --dark: #082f49;
  --bg: linear-gradient(145deg, #0c4a6e 0%, #164e63 50%, #083344 100%);
  --text: #cae8f5;
  --muted: #7eafc4;
}

html { scroll-behavior: smooth; }
body { font-family: 'Exo 2', sans-serif; background: var(--bg); background-attachment: fixed; color: var(--text); line-height: 1.75; overflow-x: hidden; min-height: 100vh; }
h1, h2, h3 { font-weight: 800; }
a { color: var(--blue); text-decoration: none; transition: 0.3s; }
a:hover { color: var(--ice); }

.frost-card {
  background: var(--frost);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 20px;
}

.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 999;
  height: 62px; display: flex; align-items: center; justify-content: space-between;
  padding: 0 2rem;
  background: rgba(8,47,73,0.88);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(14,165,233,0.15);
}
.nav-brand { font-weight: 800; font-size: 1.25rem; color: var(--blue); letter-spacing: 2px; text-transform: uppercase; }
.nav-list { display: flex; gap: 1.6rem; list-style: none; }
.nav-list a { color: var(--muted); font-size: 0.88rem; font-weight: 600; }
.nav-list a:hover, .nav-list a.active { color: #fff; }

.toggle-btn { display: none; flex-direction: column; gap: 5px; cursor: pointer; background: none; border: none; }
.toggle-btn span { width: 24px; height: 2px; background: var(--blue); transition: 0.3s; }
.toggle-btn.open span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.toggle-btn.open span:nth-child(2) { opacity: 0; }
.toggle-btn.open span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

@media(max-width:768px) {
  .toggle-btn { display: flex; }
  .nav-list {
    position: fixed; top: 62px; left: 0; right: 0;
    background: rgba(8,47,73,0.96);
    flex-direction: column; padding: 1.5rem 2rem;
    transform: translateY(-120%); transition: 0.35s;
  }
  .nav-list.open { transform: translateY(0); }
}

.cryo-hero {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  text-align: center; padding: 100px 2rem 4rem;
  position: relative;
}
.cryo-hero::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(circle at 30% 40%, rgba(14,165,233,0.15), transparent 60%),
              radial-gradient(circle at 70% 60%, rgba(255,255,255,0.05), transparent 50%);
  pointer-events: none;
}
.cryo-hero h1 { font-size: clamp(2rem, 5vw, 3.5rem); color: #fff; margin-bottom: 1rem; position: relative; }
.cryo-hero h1 span { color: var(--blue); }
.cryo-hero p { max-width: 620px; margin: 0 auto 2rem; color: var(--muted); font-size: 1.1rem; position: relative; }
.cryo-btn {
  display: inline-block; padding: 0.85rem 2.4rem;
  background: var(--blue); color: #fff; font-weight: 700;
  border-radius: 50px; text-transform: uppercase; letter-spacing: 1px; font-size: 0.88rem;
  transition: 0.3s; position: relative; border: none; cursor: pointer;
}
.cryo-btn:hover { background: #38bdf8; color: var(--dark); }
.cryo-btn-ghost { background: transparent; border: 2px solid var(--blue); color: var(--blue); }
.cryo-btn-ghost:hover { background: var(--blue); color: #fff; }

.frost-row {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem; padding: 4rem 2rem; max-width: 1100px; margin: 0 auto;
}
@media(max-width:768px) { .frost-row { grid-template-columns: 1fr; } }
.frost-tile { padding: 2.2rem; text-align: center; }
.frost-tile .sym { font-size: 2.4rem; margin-bottom: 0.7rem; }
.frost-tile h3 { font-size: 1rem; color: var(--blue); margin-bottom: 0.5rem; }
.frost-tile p { font-size: 0.9rem; color: var(--muted); }

.game-zone { padding: 4rem 2rem; text-align: center; max-width: 1100px; margin: 0 auto; }
.game-zone h2 { font-size: clamp(1.4rem, 3vw, 2rem); color: #fff; margin-bottom: 1.5rem; }
.game-container {
  width: 100%; max-width: 960px; margin: 0 auto;
  aspect-ratio: 16/10; border-radius: 20px; overflow: hidden;
  border: 1px solid rgba(14,165,233,0.25);
  box-shadow: 0 0 50px rgba(14,165,233,0.12);
}
.game-container iframe { width: 100%; height: 100%; border: none; }

.feature-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 1.5rem; padding: 4rem 2rem; max-width: 1100px; margin: 0 auto;
}
@media(max-width:768px) { .feature-grid { grid-template-columns: 1fr; } }
.feature-box { padding: 2rem; }
.feature-box h3 { color: var(--blue); margin-bottom: 0.6rem; font-size: 1rem; }
.feature-box p { color: var(--muted); font-size: 0.93rem; }

.txt-section { padding: 4rem 2rem; max-width: 900px; margin: 0 auto; }
.txt-section h2 { font-size: clamp(1.3rem, 3vw, 1.8rem); margin-bottom: 1rem; color: #fff; }
.txt-section p, .txt-section li { color: var(--muted); margin-bottom: 1rem; font-size: 0.95rem; }
.txt-section ul { padding-left: 1.5rem; }

.pg-head { padding: 120px 2rem 3rem; text-align: center; position: relative; }
.pg-head h1 { font-size: clamp(1.6rem, 4vw, 2.8rem); color: #fff; position: relative; }

.cryo-footer {
  margin-top: 4rem; padding: 2.5rem 2rem;
  border-top: 1px solid rgba(14,165,233,0.12);
  text-align: center;
}
.cryo-footer .fl { display: flex; gap: 1.5rem; justify-content: center; flex-wrap: wrap; margin-bottom: 0.8rem; }
.cryo-footer .fl a { color: var(--muted); font-size: 0.85rem; }
.cryo-footer p { color: rgba(126,175,196,0.5); font-size: 0.78rem; }

.age-screen {
  position: fixed; inset: 0; z-index: 9999;
  background: rgba(8,47,73,0.94);
  display: flex; align-items: center; justify-content: center;
  backdrop-filter: blur(10px);
}
.age-card {
  padding: 3rem 2.5rem; text-align: center; max-width: 430px; width: 90%;
}
.age-card h2 { font-size: 1.4rem; color: #fff; margin-bottom: 0.8rem; }
.age-card p { color: var(--muted); margin-bottom: 2rem; }
.age-row { display: flex; gap: 1rem; justify-content: center; }
.age-row .cryo-btn { min-width: 120px; }
.age-screen.hidden { display: none; }