@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@300;400;500;600;700;800&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
  --bg-0: #f6f9ff;
  --bg-1: #eef3ff;
  --bg-2: #e6f2ff;
  --card: #ffffff;
  --card-2: #f6f9ff;
  --text: #0d1b2a;
  --muted: #4b5b74;
  --accent: #0fd2a6;
  --accent-2: #3aa6ff;
  --accent-3: #ff8a5b;
  --accent-4: #7c8cff;
  --line: rgba(13, 27, 42, 0.08);
  --shadow: 0 20px 60px rgba(13, 27, 42, 0.12);
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  color: var(--text);
  background:
    radial-gradient(900px 500px at 10% -10%, rgba(58, 166, 255, 0.18) 0%, transparent 70%),
    radial-gradient(900px 500px at 90% 5%, rgba(15, 210, 166, 0.16) 0%, transparent 65%),
    linear-gradient(180deg, var(--bg-0), var(--bg-1) 45%, var(--bg-2));
  font-family: 'Manrope', system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  scroll-behavior: smooth;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

.container {
  width: min(1160px, 92vw);
  margin: 0 auto;
}

header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px);
  background: rgba(255, 255, 255, 0.8);
  border-bottom: 1px solid var(--line);
}

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

.logo {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  letter-spacing: 0.5px;
  display: inline-flex;
  gap: 10px;
  align-items: center;
}

.logo-badge {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: grid;
  place-items: center;
  color: #091221;
  font-weight: 800;
}

.logo-mark {
  width: auto;
  height: auto;
  max-height: none;
  max-width: none;
  border-radius: 8px;
  background: transparent;
  padding: 0;
  border: none;
}

.nav-links {
  display: flex;
  gap: 22px;
  font-size: 15px;
  color: var(--muted);
}

.nav-links a:hover {
  color: #000;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  color: #ffffff;
  font-weight: 700;
  font-size: 14px;
  box-shadow: var(--shadow);
}

.hero {
  padding: 80px 0 50px;
}

.hero-grid {
  display: grid;
  gap: 40px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  align-items: center;
}

.hero h1 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(32px, 5vw, 56px);
  margin: 0 0 12px;
}

.hero p {
  color: var(--muted);
  font-size: 18px;
  margin: 0 0 24px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  padding: 12px 18px;
  border-radius: 12px;
  background: var(--card);
  border: 1px solid var(--line);
  color: var(--text);
  font-weight: 600;
}

.btn.primary {
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  color: #ffffff;
  border: none;
}

.hero-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.hero-card img {
  height: 340px;
  width: 100%;
  object-fit: cover;
}

.hero-card .card-body {
  padding: 18px;
  color: var(--muted);
}

.section {
  padding: 60px 0;
}

.section--intro {
  background: linear-gradient(120deg, rgba(15, 210, 166, 0.12), rgba(58, 166, 255, 0.12));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section--download {
  background: radial-gradient(900px 500px at 10% 20%, rgba(255, 138, 91, 0.18), transparent 60%);
}

.section--tutorial {
  background: linear-gradient(120deg, rgba(124, 140, 255, 0.16), rgba(15, 210, 166, 0.08));
  border-top: 1px solid rgba(124, 140, 255, 0.25);
  border-bottom: 1px solid rgba(15, 210, 166, 0.2);
}

.section--security {
  background: radial-gradient(900px 500px at 90% 10%, rgba(255, 138, 91, 0.2), transparent 60%);
}

.section--blog {
  background: linear-gradient(120deg, rgba(58, 166, 255, 0.12), rgba(124, 140, 255, 0.1));
  border-top: 1px solid rgba(58, 166, 255, 0.25);
}

.section--faq {
  background: linear-gradient(120deg, rgba(15, 210, 166, 0.12), rgba(255, 138, 91, 0.08));
  border-top: 1px solid var(--line);
}

.section-title {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 24px;
}

.section-title h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(24px, 3vw, 34px);
  margin: 0;
}

.section-title p {
  color: var(--muted);
  margin: 0;
}

.card-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.card {
  background: linear-gradient(145deg, var(--card), var(--card-2));
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 20px;
  min-height: 220px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-shadow: var(--shadow);
}

.card.is-glass {
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(58, 166, 255, 0.25);
  backdrop-filter: blur(12px);
}

.card.is-outline {
  background: transparent;
  border: 1px dashed rgba(15, 210, 166, 0.45);
}

.card img {
  height: 150px;
  width: 100%;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid var(--line);
}

.card h3 {
  margin: 0;
  font-size: 18px;
}

.card p {
  margin: 0;
  color: var(--muted);
}

.list {
  display: grid;
  gap: 14px;
}

.list-item {
  padding: 16px 18px;
  border-radius: 14px;
  background: #ffffff;
  border: 1px solid var(--line);
}

.list-item.emphasis {
  background: rgba(124, 140, 255, 0.12);
  border: 1px solid rgba(124, 140, 255, 0.35);
}

.list-item strong {
  display: block;
  margin-bottom: 6px;
}

.feature-split {
  display: grid;
  gap: 30px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  align-items: center;
}

.feature-split img {
  border-radius: 18px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 12px;
  background: rgba(15, 210, 166, 0.14);
  color: var(--accent);
  border: 1px solid rgba(15, 210, 166, 0.3);
  margin-bottom: 12px;
}

footer {
  padding: 40px 0 60px;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.footer-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.footer-grid h4 {
  margin: 0 0 10px;
  color: var(--text);
}

.footer-note {
  font-size: 13px;
  color: var(--muted);
  margin-top: 20px;
}

.breadcrumb {
  font-size: 14px;
  color: var(--muted);
  margin-top: 20px;
}

.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  background: rgba(58, 166, 255, 0.12);
  border: 1px solid rgba(58, 166, 255, 0.3);
  color: var(--accent-2);
}

.notice {
  padding: 18px;
  border-radius: 16px;
  border: 1px dashed rgba(255, 138, 91, 0.5);
  background: rgba(255, 138, 91, 0.12);
  color: #7a3b1f;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: all 0.8s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 860px) {
  .nav-links {
    display: none;
  }
  .hero {
    padding-top: 50px;
  }
}

@media (max-width: 640px) {
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .nav-cta {
    padding: 10px 14px;
  }
}