:root {
  --color-primary: #0ea5e9;
  --color-secondary: #111827;
  --color-accent: #f59e0b;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif; color: #0f172a; line-height: 1.5; }
.container { max-width: 1120px; margin: 0 auto; padding: 0 1rem; }
.site-header { position: sticky; top: 0; z-index: 10; backdrop-filter: saturate(180%) blur(8px); background: rgba(248, 250, 252, .9); border-bottom: 1px solid #e5e7eb; }
.site-footer { border-top: 1px solid #e5e7eb; margin-top: 3rem; background: #f8fafc; }
.logo { font-weight: 800; margin-right: 1rem; text-decoration: none; color: var(--color-secondary); letter-spacing: .2px; }
nav { display: flex; align-items: center; gap: .75rem; }
nav a { text-decoration: none; color: #111; padding: .375rem .5rem; border-radius: .375rem; }
nav a:hover { background: #eef2ff; }
nav .btn { padding: .5rem .75rem; background: var(--color-primary); color: white; border-radius: .5rem; }

main.container { padding-top: 1.25rem; }

.hero { padding: 4.5rem 0 3rem; background: radial-gradient(1200px 600px at 20% 10%, rgba(14,165,233,.12), transparent), linear-gradient(180deg, #f8fafc 0%, #ffffff 100%); }
.hero-inner { display: grid; grid-template-columns: 1.2fr 1fr; gap: 2rem; align-items: center; }
.hero h1 { font-size: clamp(2rem, 4vw, 3rem); line-height: 1.1; margin: 0 0 .75rem; letter-spacing: -.02em; }
.hero p { font-size: 1.125rem; color: #334155; margin: 0 0 1.25rem; }
.hero-cta { display: flex; gap: .75rem; align-items: center; margin-bottom: 1rem; }
.btn { display: inline-block; padding: .6rem 1rem; border: 1px solid #e5e7eb; border-radius: .5rem; background: white; cursor: pointer; transition: transform .06s ease, box-shadow .2s ease, background .2s ease; }
.btn:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(2, 6, 23, .06); }
.btn:active { transform: translateY(0); }
.btn-primary { background: var(--color-primary); color: white; border-color: var(--color-primary); }
.btn-lg { padding: .8rem 1.2rem; font-weight: 600; }

.hero-points { list-style: none; padding: 0; margin: .75rem 0 0; color: #334155; display: grid; gap: .35rem; }
.hero-points li::before { content: "✔"; color: var(--color-primary); margin-right: .5rem; }

.hero-visual { display: flex; justify-content: center; }
.preview-card { width: 100%; max-width: 520px; border: 1px solid #e5e7eb; border-radius: 12px; background: #fff; box-shadow: 0 10px 30px rgba(2,6,23,.06); overflow: hidden; }
.preview-bar { display: flex; gap: 6px; padding: 10px; background: #f1f5f9; border-bottom: 1px solid #e5e7eb; }
.preview-bar span { width: 10px; height: 10px; border-radius: 999px; background: #e2e8f0; }
.preview-body { padding: 14px; }
.preview-block { height: 18px; border-radius: 6px; background: #e2e8f0; margin-bottom: 10px; }
.preview-block.sm { width: 60%; }
.preview-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 8px; }
.preview-tile { aspect-ratio: 4/3; border-radius: 8px; background: linear-gradient(135deg, rgba(14,165,233,.2), rgba(14,165,233,.05)); border: 1px solid rgba(14,165,233,.25); }

.features { padding: 2.5rem 0 2.75rem; background: #ffffff; }
.features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.feature { border: 1px solid #e5e7eb; border-radius: 12px; padding: 1rem; background: #fff; box-shadow: 0 6px 16px rgba(2,6,23,.04); }
.feature h3 { margin: .5rem 0 .25rem; font-size: 1.125rem; }
.feature p { margin: 0; color: #475569; font-size: .98rem; }
.feat-icon { width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center; background: rgba(14,165,233,.1); color: var(--color-primary); font-size: 1.1rem; }

.cta-strip { padding: 2.25rem 0; background: linear-gradient(90deg, rgba(14,165,233,.1), rgba(14,165,233,.05)); border-top: 1px solid #e5e7eb; border-bottom: 1px solid #e5e7eb; }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.cta-text h2 { margin: 0 0 .25rem; font-size: clamp(1.25rem, 2.4vw, 1.75rem); }
.cta-text p { margin: 0; color: #334155; }
.cta-actions { display: flex; gap: .75rem; }

@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  nav { gap: .5rem; }
  .features-grid { grid-template-columns: 1fr; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
}