:root {
  --bg: #ffffff;
  --ink: #0A2540;
  --ink-soft: #5b6b80;
  --accent: #00B4D8;
  --accent-2: #06D6A0;
  --border: #e6ecf2;
  --radius: 12px;
  --max: 1100px;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body { font-family: Inter, Manrope, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
       color: var(--ink); background: var(--bg); line-height: 1.55; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.nav { display: flex; align-items: center; justify-content: space-between;
       padding: 18px 32px; border-bottom: 1px solid var(--border); }
.nav .logo { font-weight: 700; font-size: 20px; color: var(--ink); }
.nav .logo .logo-mark { color: var(--accent); margin-right: 6px; }
.nav nav a { color: var(--ink-soft); margin: 0 12px; font-weight: 500; }
.nav nav a:hover { color: var(--ink); }
.cta { background: var(--ink); color: #fff; padding: 9px 16px; border-radius: 8px; }
.cta:hover { text-decoration: none; opacity: .9; }

.hero { padding: 80px 32px 64px; max-width: var(--max); margin: 0 auto; text-align: center; }
.hero h1 { font-size: 52px; line-height: 1.1; margin: 0 0 18px; letter-spacing: -.02em; }
.hero h1 .accent { color: var(--accent); }
.hero .sub { font-size: 19px; color: var(--ink-soft); max-width: 720px; margin: 0 auto 28px; }
.cta-row { display: flex; gap: 14px; justify-content: center; }
.btn { display: inline-block; padding: 13px 22px; border-radius: 10px; font-weight: 600; font-size: 16px; }
.btn-primary { background: var(--accent-2); color: #fff; }
.btn-primary:hover { background: #05bf8d; text-decoration: none; }
.btn-ghost { background: transparent; border: 1px solid var(--border); color: var(--ink); }
.btn-lg { padding: 16px 28px; font-size: 17px; }
.hint { margin-top: 14px; color: var(--ink-soft); font-size: 14px; }

.grid { max-width: var(--max); margin: 64px auto; padding: 0 32px;
        display: grid; gap: 24px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.grid article { border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; }
.grid h3 { margin: 0 0 8px; font-size: 18px; }
.grid p { margin: 0; color: var(--ink-soft); }

.how { max-width: 760px; margin: 80px auto; padding: 0 32px; }
.how h2 { font-size: 32px; margin: 0 0 24px; text-align: center; }
.how ol { font-size: 17px; line-height: 1.8; padding-left: 22px; }

.testimonials { max-width: var(--max); margin: 80px auto; padding: 0 32px; }
.testimonials h2 { text-align: center; font-size: 32px; margin: 0 0 32px; }
.testimonials blockquote { border-left: 4px solid var(--accent); padding: 12px 20px;
                            margin: 0 0 20px; color: var(--ink-soft); font-style: italic; }
.testimonials cite { display: block; margin-top: 8px; font-style: normal; color: var(--ink); font-weight: 600; }

.cta-bottom { background: #f6f9fc; padding: 64px 32px; text-align: center; }
.cta-bottom h2 { margin: 0 0 12px; font-size: 32px; }
.cta-bottom p { color: var(--ink-soft); margin: 0 0 24px; }

footer { border-top: 1px solid var(--border); padding: 48px 32px; }
footer .cols { max-width: var(--max); margin: 0 auto; display: grid;
               grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; }
footer b { display: block; margin-bottom: 10px; }
footer ul { list-style: none; padding: 0; margin: 0; }
footer li a { color: var(--ink-soft); line-height: 1.9; }
footer .lang { max-width: var(--max); margin: 32px auto 0; padding-top: 24px;
               border-top: 1px solid var(--border); color: var(--ink-soft); font-size: 14px; }

@media (max-width: 720px) {
  .hero h1 { font-size: 36px; }
  .nav nav { display: none; }
  footer .cols { grid-template-columns: 1fr 1fr; }
}