:root {
  --bg: #0d1117;
  --bg-alt: #11151d;
  --surface: #171d27;
  --border: #232b37;
  --text: #e6edf3;
  --text-dim: #9aa7b4;
  --accent: #f0b429;
  --accent-2: #e8862c;
  --radius: 12px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

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

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 20px;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(13, 17, 23, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text);
  letter-spacing: 0.3px;
}

.brand:hover {
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 22px;
}

.nav-links a {
  color: var(--text-dim);
  font-size: 0.95rem;
}

.nav-links a:hover {
  color: var(--accent);
}

.hero {
  background:
    radial-gradient(1000px 500px at 20% -10%, rgba(240, 180, 41, 0.16), transparent 60%),
    radial-gradient(800px 400px at 90% 10%, rgba(232, 134, 44, 0.12), transparent 55%),
    linear-gradient(180deg, #0f1520 0%, var(--bg) 100%);
  padding: 120px 20px 90px;
  text-align: center;
  border-bottom: 1px solid var(--border);
}

.hero-inner {
  max-width: 820px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 3.4rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.tagline {
  margin-top: 18px;
  font-size: 1.4rem;
  font-weight: 600;
}

.subline {
  margin-top: 10px;
  font-size: 1.05rem;
  color: var(--text-dim);
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

.hero-cta {
  margin-top: 32px;
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 12px 26px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  color: #1a1202;
}

.btn-primary:hover {
  box-shadow: 0 6px 20px rgba(240, 180, 41, 0.35);
}

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

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.section {
  padding: 80px 0;
}

.section.alt {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 10px;
  text-align: center;
}

.lead {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 40px;
  color: var(--text-dim);
  font-size: 1.05rem;
}

.gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 30px;
}

.gallery figure {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.gallery img {
  width: 100%;
  display: block;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.gallery figcaption {
  padding: 8px 12px;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.how {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin: 30px 0 40px;
}

.how-item,
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
}

.how-item h3,
.card h3 {
  margin-bottom: 8px;
  font-size: 1.15rem;
  color: var(--accent);
}

.how-item p,
.card p {
  color: var(--text-dim);
  font-size: 0.95rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.ticks {
  list-style: none;
  color: var(--text-dim);
  font-size: 0.95rem;
}

.ticks li {
  padding-left: 22px;
  position: relative;
  margin-bottom: 6px;
}

.ticks li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

.badge {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--accent);
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 600;
}

.dl-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 30px;
}

.dl-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.dl-card p {
  color: var(--text-dim);
  font-size: 0.95rem;
  flex: 1;
}

.platform {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--accent);
}

.update {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  margin-bottom: 16px;
}

.update-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}

.update h3 {
  font-size: 1.1rem;
}

.update-date {
  color: var(--text-dim);
  font-size: 0.85rem;
}

.update ul {
  list-style: none;
  color: var(--text-dim);
  font-size: 0.95rem;
}

.update li {
  padding-left: 18px;
  position: relative;
  margin-bottom: 4px;
}

.update li::before {
  content: "•";
  position: absolute;
  left: 4px;
  color: var(--accent);
}

.footer {
  padding: 40px 20px;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--text-dim);
  font-size: 0.9rem;
}

@media (max-width: 860px) {
  .gallery,
  .how,
  .dl-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-2 {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    font-size: 2.4rem;
  }
}

@media (max-width: 560px) {
  .gallery,
  .how,
  .dl-grid {
    grid-template-columns: 1fr;
  }

  .nav-links {
    gap: 12px;
  }
}