:root {
  color-scheme: dark;
  --background: #070b16;
  --surface: rgba(18, 27, 49, 0.82);
  --surface-strong: #121b31;
  --border: rgba(255, 255, 255, 0.1);
  --text: #f7f9ff;
  --muted: #a9b5cc;
  --blue: #55a8ff;
  --cyan: #69e1ff;
  --gold: #ffd27a;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.32);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 12% 0%, rgba(44, 119, 255, 0.24), transparent 34rem),
    radial-gradient(circle at 88% 12%, rgba(105, 225, 255, 0.14), transparent 28rem),
    var(--background);
  line-height: 1.65;
}

a {
  color: var(--cyan);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

a:hover {
  color: #a8f1ff;
}

.shell {
  width: min(1080px, calc(100% - 32px));
  margin: 0 auto;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 24px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  font-weight: 750;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 14px;
  background: linear-gradient(145deg, #3a73ff, #58dff4);
  box-shadow: 0 12px 30px rgba(47, 121, 255, 0.28);
  font-size: 20px;
}

.lang-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.lang-links a,
.pill {
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  padding: 7px 12px;
  font-size: 0.86rem;
  text-decoration: none;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(44px, 8vw, 88px);
  border: 1px solid var(--border);
  border-radius: 32px;
  background: linear-gradient(145deg, rgba(20, 35, 67, 0.96), rgba(10, 16, 31, 0.94));
  box-shadow: var(--shadow);
}

.hero::after {
  position: absolute;
  width: 260px;
  height: 260px;
  right: -90px;
  bottom: -110px;
  border-radius: 50%;
  background: linear-gradient(145deg, rgba(80, 147, 255, 0.7), rgba(105, 225, 255, 0.08));
  filter: blur(4px);
  content: "";
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--gold);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin-top: 0;
  line-height: 1.15;
  letter-spacing: -0.035em;
}

h1 {
  max-width: 750px;
  margin-bottom: 18px;
  font-size: clamp(2.4rem, 7vw, 5rem);
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.65rem);
}

h3 {
  margin-bottom: 10px;
  font-size: 1.12rem;
}

.hero p {
  position: relative;
  z-index: 1;
  max-width: 670px;
  margin: 0;
  color: #c9d4e8;
  font-size: clamp(1.02rem, 2vw, 1.22rem);
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

main {
  padding-bottom: 80px;
}

.section {
  padding: 72px 0 0;
  scroll-margin-top: 24px;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 26px;
}

.section-heading p,
.card p,
.note,
li {
  color: var(--muted);
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.card {
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--surface);
  backdrop-filter: blur(14px);
}

.card p:last-child,
.card ul:last-child {
  margin-bottom: 0;
}

.number {
  display: grid;
  width: 34px;
  height: 34px;
  margin-bottom: 18px;
  place-items: center;
  border-radius: 11px;
  background: rgba(85, 168, 255, 0.13);
  color: var(--blue);
  font-weight: 800;
}

.callout {
  margin-top: 18px;
  padding: 22px 24px;
  border: 1px solid rgba(255, 210, 122, 0.24);
  border-radius: 18px;
  background: rgba(255, 210, 122, 0.07);
}

.callout strong {
  color: var(--gold);
}

ul {
  padding-left: 1.2rem;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 30px 0 46px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}

footer p {
  margin: 0;
}

@media (max-width: 720px) {
  .shell {
    width: min(100% - 22px, 1080px);
  }

  .topbar {
    align-items: flex-start;
    flex-wrap: wrap;
  }

  .brand span:last-child {
    max-width: 150px;
  }

  .hero {
    padding: 38px 24px 44px;
    border-radius: 24px;
  }

  .grid {
    grid-template-columns: 1fr;
  }

  .section {
    padding-top: 54px;
  }

  footer {
    flex-direction: column;
  }
}