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

:root {
  --bg: #0f1117;
  --bg-card: #1a1d27;
  --bg-hover: #242836;
  --primary: #f97316;
  --primary-hover: #ea580c;
  --primary-light: #fbbf24;
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --border: #2e3344;
  --radius: 16px;
  --radius-sm: 8px;
}

html {
  scroll-behavior: smooth;
}

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

/* Navigation */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(15, 17, 23, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 18px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  gap: 8px;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  transition: all 0.2s;
}

.nav-links a:hover {
  color: var(--text);
  background: var(--bg-hover);
}

/* Sections */
section {
  max-width: 960px;
  margin: 0 auto;
  padding: 80px 20px;
}

.section-label {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--primary);
  margin-bottom: 12px;
}

.section-title {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 16px;
  color: var(--text-muted);
  max-width: 600px;
}

/* Hero */
#hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: 80px;
}

.hero-icon {
  font-size: 64px;
  margin-bottom: 20px;
  filter: drop-shadow(0 0 40px rgba(249, 115, 22, 0.3));
}

.hero h1 {
  font-size: 48px;
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 18px;
  color: var(--text-muted);
  max-width: 520px;
  margin-bottom: 32px;
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  background: rgba(249, 115, 22, 0.15);
  color: var(--primary);
  margin-bottom: 20px;
  border: 1px solid rgba(249, 115, 22, 0.3);
}

.hero-buttons {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-hover));
  color: #fff;
  box-shadow: 0 4px 20px rgba(249, 115, 22, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(249, 115, 22, 0.45);
}

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

.btn-outline:hover {
  background: var(--bg-hover);
  border-color: var(--primary);
}

.btn-small {
  padding: 10px 20px;
  font-size: 13px;
}

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 48px;
}

.hero-stat {
  text-align: center;
}

.hero-stat-value {
  font-size: 28px;
  font-weight: 800;
  color: var(--text);
}

.hero-stat-label {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 2px;
}

/* Features */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  margin-top: 40px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: all 0.3s;
}

.feature-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.feature-icon {
  font-size: 32px;
  margin-bottom: 14px;
}

.feature-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Screenshot */
.screenshot-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 32px;
}

.screenshot-wrapper img {
  width: 100%;
  height: auto;
  display: block;
}

.screenshot-caption {
  padding: 16px 24px;
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
  border-top: 1px solid var(--border);
}

/* Download */
.download-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 32px;
}

.download-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  text-align: center;
  transition: all 0.3s;
}

.download-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.download-icon {
  font-size: 48px;
  margin-bottom: 14px;
}

.download-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 6px;
}

.download-card p {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.card-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
  background: rgba(249, 115, 22, 0.12);
  color: var(--primary);
  margin-bottom: 12px;
}

.platform-info {
  margin-top: 16px;
  font-size: 12px;
  color: var(--text-muted);
}

.platform-info span {
  display: inline-block;
  margin: 0 6px;
}

/* Donate */
.donate-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 32px;
}

.donate-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 28px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--text);
  font-size: 15px;
  font-weight: 600;
  transition: all 0.3s;
}

.donate-card:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.3);
}

.donate-card-icon {
  font-size: 28px;
}

.donate-card-sub {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 400;
}

/* FAQ */
.faq-list {
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

details {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  cursor: pointer;
  transition: border-color 0.2s;
}

details:hover {
  border-color: var(--primary);
}

details summary {
  font-size: 15px;
  font-weight: 700;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

details summary::after {
  content: '+';
  font-size: 18px;
  color: var(--text-muted);
  transition: transform 0.2s;
}

details[open] summary::after {
  transform: rotate(45deg);
}

details p {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 12px;
  line-height: 1.6;
}

/* Footer */
footer {
  border-top: 1px solid var(--border);
  padding: 40px 20px;
  text-align: center;
}

.footer-inner {
  max-width: 960px;
  margin: 0 auto;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--primary);
}

.footer-meta {
  font-size: 13px;
  color: var(--text-muted);
}

.footer-meta span {
  display: inline-block;
  margin: 0 8px;
}

/* Responsive */
@media (max-width: 768px) {
  section {
    padding: 60px 16px;
  }

  .hero h1 {
    font-size: 32px;
  }

  .hero p {
    font-size: 16px;
  }

  .hero-stats {
    gap: 24px;
  }

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

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

  .nav-links {
    gap: 4px;
  }

  .nav-links a {
    font-size: 12px;
    padding: 5px 10px;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 26px;
  }

  .hero-stats {
    flex-direction: column;
    gap: 16px;
  }

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

  .btn {
    padding: 12px 20px;
    font-size: 14px;
  }
}