/* Core Reset (minimal) */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji"; color: #ffffff; background: linear-gradient(180deg, #0c65c6, #2ea7ff); line-height: 1.6; }

:root {
  --container: 1120px;
  --pad: 16px;
  --primary: #2ea7ff;
  --accent: #22c55e;
  --ink: #0f172a;
  --muted: #475569;
  --bg-soft: #f8fafc;
  --radius: 12px;
  --shadow: 0 2px 10px rgba(2, 8, 23, 0.06);
}

.container { max-width: var(--container); padding-left: var(--pad); padding-right: var(--pad); margin-left: auto; margin-right: auto; }

.site-header { position: sticky; top: 0; z-index: 10; background: rgba(12,101,198,0.85); backdrop-filter: saturate(180%) blur(8px); border-bottom: 1px solid rgba(255,255,255,0.12); }
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 8px; font-weight: 700; letter-spacing: 0.2px; text-decoration: none; color: inherit; }
.brand img { display: block; height: 36px; width: auto; }
.main-nav { display: flex; gap: 12px; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 10px 16px; border-radius: 10px; text-decoration: none; font-weight: 600; border: 1px solid transparent; transition: transform .06s ease, box-shadow .2s ease, background-color .2s ease; }
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow); }
.btn:active { transform: translateY(0); box-shadow: none; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-accent { background: var(--accent); color: #052e16; }
.btn-link { color: var(--primary); text-decoration: underline; padding: 0; font-weight: 600; background: transparent; }
.btn-lg { padding: 14px 20px; border-radius: 12px; font-size: 17px; }

.hero { background: transparent; border-bottom: 1px solid rgba(255,255,255,0.12); }
.hero-inner { padding-top: 28px; padding-bottom: 28px; }
.hero h1 { font-size: 28px; line-height: 1.2; margin: 0 0 10px; }
.lead { color: rgba(255,255,255,0.85); max-width: 72ch; }
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 14px; }

.section { padding: 22px 0; }
.grid-3 { display: grid; grid-template-columns: 1fr; gap: 14px; }
.card { padding: 14px; border-radius: var(--radius); border: 1px solid #e2e8f0; background: var(--bg-soft); box-shadow: var(--shadow); }
.card h2 { font-size: 20px; margin: 0 0 6px; }
.card p { margin: 0 0 8px; color: #1f2937; }

.howto h2, .features h2 { font-size: 22px; margin: 0 0 10px; }
.steps { margin: 0; padding-left: 18px; }
.steps li { margin: 8px 0; }
.feature-list { margin: 0; padding-left: 18px; }
.feature-list li { margin: 8px 0; }

.site-footer { border-top: 1px solid #e2e8f0; background: #ffffff; }
.footer-inner { padding: 18px 0; display: grid; gap: 10px; }
.site-footer p { color: var(--muted); margin: 0; }

@media (min-width: 640px) {
  .hero-inner { padding-top: 42px; padding-bottom: 42px; }
  .hero h1 { font-size: 36px; }
}

@media (min-width: 768px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .hero h1 { font-size: 42px; }
}