/* ---------- Reset & base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --ink: #1c2333;
  --ink-soft: #4a5368;
  --paper: #ffffff;
  --paper-alt: #f5f7fb;
  --accent: #2f5fe0;
  --accent-dark: #2249ad;
  --line: #e3e7f0;
  --radius: 10px;
  --container: 1080px;
}

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.narrow { max-width: 720px; }
.center { text-align: center; }

h1, h2, h3 { line-height: 1.2; letter-spacing: -0.015em; }
h2 { font-size: 2rem; margin-bottom: 0.5rem; }
h3 { font-size: 1.15rem; margin-bottom: 0.4rem; }

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

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.02em;
}
.logo:hover { text-decoration: none; }

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.site-nav a {
  color: var(--ink-soft);
  font-size: 0.95rem;
  font-weight: 500;
}
.site-nav a:hover { color: var(--ink); text-decoration: none; }

.nav-cta {
  background: var(--accent);
  color: #fff !important;
  padding: 8px 18px;
  border-radius: 999px;
}
.nav-cta:hover { background: var(--accent-dark); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 13px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 1rem;
}
.btn:hover { text-decoration: none; }

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); }

.btn-secondary {
  background: transparent;
  color: var(--ink);
  border: 1.5px solid var(--line);
}
.btn-secondary:hover { border-color: var(--ink-soft); }

.btn-lg { padding: 16px 36px; font-size: 1.1rem; }

/* ---------- Hero ---------- */
.hero {
  padding: 96px 0 72px;
  background:
    radial-gradient(1200px 500px at 70% -10%, #e8eefc 0%, transparent 60%),
    var(--paper);
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  max-width: 760px;
  margin-bottom: 20px;
}

.hero-sub {
  font-size: 1.2rem;
  color: var(--ink-soft);
  max-width: 620px;
  margin-bottom: 32px;
}

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- Stats strip ---------- */
.strip {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--paper-alt);
}

.strip-inner {
  display: flex;
  justify-content: space-around;
  gap: 24px;
  padding: 28px 24px;
  flex-wrap: wrap;
}

.strip-item { text-align: center; }

.strip-num {
  display: block;
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--accent);
}

.strip-label { color: var(--ink-soft); font-size: 0.95rem; }

/* ---------- Sections ---------- */
.section { padding: 80px 0; }
.section-alt { background: var(--paper-alt); }

.section-lead {
  font-size: 1.15rem;
  color: var(--ink-soft);
  max-width: 640px;
  margin-bottom: 40px;
}

.section .narrow p + p { margin-top: 1em; }

/* ---------- Steps ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 28px;
}

.step {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 24px;
}

.step-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.step p { color: var(--ink-soft); font-size: 0.95rem; }

/* ---------- Features ---------- */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
}

.feature {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 24px;
}

.feature p { color: var(--ink-soft); font-size: 0.95rem; }

/* ---------- FAQ ---------- */
.faq dt {
  font-weight: 600;
  margin-top: 28px;
  font-size: 1.05rem;
}
.faq dt:first-child { margin-top: 0; }

.faq dd { color: var(--ink-soft); margin-top: 6px; }

/* ---------- CTA ---------- */
.cta { padding-bottom: 100px; }
.cta .section-lead { margin-left: auto; margin-right: auto; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 28px 0;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-nav { display: flex; gap: 20px; }
.footer-nav a { color: var(--ink-soft); }
.footer-nav a:hover { color: var(--ink); }

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  .site-nav a:not(.nav-cta) { display: none; }
  .hero { padding: 64px 0 48px; }
  .section { padding: 56px 0; }
  h2 { font-size: 1.6rem; }
}