:root {
    --bg: #ffffff;
    --bg-soft: #f5f7fb;
    --ink: #1a2233;
    --muted: #5b677d;
    --brand: #2f5bea;
    --brand-dark: #1e3fb0;
    --line: #e4e8f0;
    --radius: 14px;
    --shadow: 0 8px 30px rgba(20, 40, 90, 0.08);
    --maxw: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--ink);
    background: var(--bg);
    line-height: 1.65;
    font-size: 17px;
}

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

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

.container {
    width: 100%;
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: saturate(180%) blur(10px);
    border-bottom: 1px solid var(--line);
}
.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
}
.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 20px;
    color: var(--ink);
    letter-spacing: -0.02em;
}
.brand:hover { text-decoration: none; }
.brand .logo {
    width: 34px;
    height: 34px;
    border-radius: 9px;
    background: linear-gradient(135deg, var(--brand), #6c8bff);
    display: grid;
    place-items: center;
    color: #fff;
    font-size: 15px;
    font-weight: 900;
}
.nav-links { display: flex; gap: 26px; align-items: center; }
.nav-links a { color: var(--muted); font-size: 15px; font-weight: 500; }
.nav-links a:hover { color: var(--ink); text-decoration: none; }
.nav-toggle { display: none; background: none; border: 0; font-size: 26px; cursor: pointer; color: var(--ink); }

/* Hero */
.hero {
    background: radial-gradient(1200px 500px at 70% -10%, #e8efff 0%, transparent 60%), var(--bg);
    padding: 86px 0 64px;
}
.hero h1 {
    font-size: clamp(30px, 5vw, 52px);
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin: 0 0 18px;
    max-width: 720px;
}
.hero p.lead {
    font-size: 19px;
    color: var(--muted);
    max-width: 620px;
    margin: 0 0 30px;
}
.btn {
    display: inline-block;
    background: var(--brand);
    color: #fff;
    padding: 14px 26px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 16px;
    transition: background .15s ease, transform .15s ease;
}
.btn:hover { background: var(--brand-dark); text-decoration: none; transform: translateY(-1px); }
.btn.secondary { background: #fff; color: var(--brand); border: 1px solid var(--line); margin-left: 10px; }
.btn.secondary:hover { background: var(--bg-soft); }

/* Sections */
section.block { padding: 64px 0; }
section.block.soft { background: var(--bg-soft); }
.section-head { max-width: 640px; margin: 0 auto 44px; text-align: center; }
.section-head h2 {
    font-size: clamp(24px, 3.5vw, 34px);
    letter-spacing: -0.02em;
    margin: 0 0 12px;
}
.section-head p { color: var(--muted); margin: 0; }

.grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 28px;
    box-shadow: var(--shadow);
}
.card .ico {
    width: 46px; height: 46px;
    border-radius: 11px;
    background: #eaf0ff;
    color: var(--brand);
    display: grid; place-items: center;
    font-size: 22px;
    margin-bottom: 16px;
}
.card h3 { margin: 0 0 8px; font-size: 19px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }

/* Steps */
.steps { counter-reset: step; display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.step { position: relative; padding-top: 14px; }
.step::before {
    counter-increment: step;
    content: counter(step);
    display: grid; place-items: center;
    width: 40px; height: 40px;
    border-radius: 50%;
    background: var(--brand);
    color: #fff; font-weight: 700;
    margin-bottom: 14px;
}
.step h4 { margin: 0 0 6px; font-size: 17px; }
.step p { margin: 0; color: var(--muted); font-size: 14px; }

/* Stats band */
.stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    text-align: center;
}
.stat .num { font-size: 38px; font-weight: 800; color: var(--brand); letter-spacing: -0.02em; line-height: 1; }
.stat .lbl { color: var(--muted); font-size: 15px; margin-top: 8px; }

/* Two-column intro */
.split {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 48px;
    align-items: center;
}
.split h2 { font-size: clamp(24px, 3.5vw, 34px); letter-spacing: -0.02em; margin: 0 0 16px; }
.split p { color: var(--muted); margin: 0 0 14px; }
.checklist { list-style: none; padding: 0; margin: 18px 0 0; }
.checklist li { position: relative; padding-left: 32px; margin-bottom: 12px; color: var(--ink); }
.checklist li::before {
    content: "✓";
    position: absolute; left: 0; top: 0;
    width: 22px; height: 22px;
    background: #eaf0ff; color: var(--brand);
    border-radius: 50%; display: grid; place-items: center;
    font-size: 13px; font-weight: 700;
}
.panel {
    background: linear-gradient(135deg, #2f5bea, #6c8bff);
    color: #fff;
    border-radius: var(--radius);
    padding: 34px;
    box-shadow: var(--shadow);
}
.panel h3 { margin: 0 0 14px; font-size: 20px; }
.panel ul { margin: 0; padding-left: 18px; }
.panel li { margin-bottom: 10px; opacity: .95; }

/* FAQ */
.faq { max-width: 760px; margin: 0 auto; }
.faq details {
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 18px 22px;
    margin-bottom: 14px;
    background: #fff;
}
.faq summary {
    font-weight: 600;
    cursor: pointer;
    font-size: 17px;
    list-style: none;
    display: flex; justify-content: space-between; align-items: center;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--brand); font-size: 24px; font-weight: 400; }
.faq details[open] summary::after { content: "−"; }
.faq details p { color: var(--muted); margin: 14px 0 0; }

/* CTA band */
.cta-band {
    background: #0f1626;
    color: #fff;
    text-align: center;
    padding: 64px 20px;
}
.cta-band h2 { font-size: clamp(24px, 3.5vw, 32px); margin: 0 0 14px; letter-spacing: -0.02em; }
.cta-band p { color: #97a3bf; max-width: 560px; margin: 0 auto 26px; }

/* Content pages */
.page { padding: 56px 0; }
.page .container { max-width: 820px; }
.page h1 { font-size: clamp(28px, 4vw, 40px); letter-spacing: -0.02em; margin: 0 0 8px; }
.page .updated { color: var(--muted); font-size: 14px; margin: 0 0 36px; }
.page h2 { font-size: 23px; margin: 38px 0 12px; letter-spacing: -0.01em; }
.page h3 { font-size: 18px; margin: 26px 0 8px; }
.page p, .page li { color: #33415c; }
.page ul { padding-left: 20px; }
.page li { margin-bottom: 8px; }

/* Contact form */
.form { display: grid; gap: 16px; max-width: 560px; }
.form label { font-weight: 600; font-size: 14px; display: block; margin-bottom: 6px; }
.form input, .form textarea {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--line);
    border-radius: 10px;
    font: inherit;
    font-size: 15px;
}
.form textarea { min-height: 130px; resize: vertical; }

/* Footer */
.site-footer {
    background: #0f1626;
    color: #c4cde0;
    padding: 56px 0 28px;
    margin-top: 20px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1.2fr 1.3fr;
    gap: 36px;
    margin-bottom: 36px;
}
.footer-col .muted-line {
    display: block;
    color: #8b97b3;
    font-size: 13px;
    line-height: 1.5;
    margin-bottom: 9px;
}
.site-footer .brand { color: #fff; margin-bottom: 14px; }
.site-footer p { color: #8b97b3; font-size: 14px; margin: 0 0 8px; }
.footer-col h4 { color: #fff; font-size: 15px; margin: 0 0 14px; }
.footer-col a { display: block; color: #c4cde0; font-size: 14px; margin-bottom: 9px; }
.footer-col a:hover { color: #fff; text-decoration: none; }
.footer-bottom {
    border-top: 1px solid #1f2a40;
    padding-top: 22px;
    font-size: 13px;
    color: #6b7895;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
}

@media (max-width: 860px) {
    .grid { grid-template-columns: 1fr; }
    .steps { grid-template-columns: repeat(2, 1fr); }
    .stats { grid-template-columns: repeat(2, 1fr); gap: 30px; }
    .split { grid-template-columns: 1fr; gap: 32px; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .nav-links {
        display: none;
        position: absolute;
        top: 68px; left: 0; right: 0;
        background: #fff;
        flex-direction: column;
        padding: 16px 20px;
        gap: 14px;
        border-bottom: 1px solid var(--line);
    }
    .nav-links.open { display: flex; }
    .nav-toggle { display: block; }
    .btn.secondary { margin-left: 0; margin-top: 10px; display: inline-block; }
}