:root {
    color-scheme: light;
    --bg: #f7f9fc;
    --surface: #ffffff;
    --text: #172033;
    --muted: #5f6b7a;
    --line: #dbe3ee;
    --primary: #2457d6;
    --primary-dark: #18315f;
    --shadow: 0 18px 55px rgba(23, 32, 51, 0.10);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
}

a {
    color: var(--primary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 5;
    background: rgba(255, 255, 255, 0.92);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(14px);
}

.nav {
    width: min(1080px, calc(100% - 32px));
    min-height: 64px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.brand {
    font-size: 18px;
    font-weight: 800;
    color: var(--text);
}

.nav-links {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 14px;
    font-weight: 650;
}

.nav-links a {
    color: var(--muted);
}

.hero {
    background: linear-gradient(135deg, #101827 0%, #2457d6 58%, #0e9f9a 100%);
    color: #ffffff;
}

.hero-content {
    width: min(1080px, calc(100% - 32px));
    min-height: 420px;
    margin: 0 auto;
    padding: 72px 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
}

.eyebrow {
    margin: 0 0 12px;
    color: #cfe8ff;
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

h1,
h2,
h3,
p {
    overflow-wrap: anywhere;
}

h1 {
    max-width: 780px;
    margin: 0;
    font-size: clamp(40px, 7vw, 72px);
    line-height: 1;
    letter-spacing: 0;
}

h2 {
    margin: 0;
    font-size: 30px;
    line-height: 1.15;
    letter-spacing: 0;
}

h3 {
    margin: 0 0 10px;
    font-size: 18px;
    line-height: 1.25;
}

.lead {
    max-width: 720px;
    margin: 22px 0 0;
    color: rgba(255, 255, 255, 0.9);
    font-size: 20px;
}

.button {
    display: inline-flex;
    align-items: center;
    min-height: 48px;
    margin-top: 32px;
    padding: 0 22px;
    border-radius: 8px;
    background: #ffffff;
    color: var(--primary-dark);
    font-weight: 800;
}

.section {
    width: min(1080px, calc(100% - 32px));
    margin: 0 auto;
    padding: 64px 0;
    border-bottom: 1px solid var(--line);
}

.section-header {
    max-width: 760px;
    margin-bottom: 28px;
}

.section-header p {
    color: var(--muted);
}

.contact-card {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 22px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--surface);
    box-shadow: var(--shadow);
}

.contact-card span {
    color: var(--muted);
    font-weight: 700;
}

.contact-card a {
    font-size: 18px;
    font-weight: 800;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.feature-grid article {
    min-height: 210px;
    padding: 22px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--surface);
}

.feature-grid p {
    margin: 0;
    color: var(--muted);
}

.faq-list {
    display: grid;
    gap: 12px;
}

details {
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--surface);
}

summary {
    cursor: pointer;
    padding: 18px 20px;
    font-weight: 800;
}

details p {
    margin: 0;
    padding: 0 20px 20px;
    color: var(--muted);
}

.footer {
    width: min(1080px, calc(100% - 32px));
    margin: 0 auto;
    padding: 34px 0 44px;
    color: var(--muted);
    font-size: 14px;
}

.footer p {
    margin: 6px 0;
}

@media (max-width: 860px) {
    .nav {
        align-items: flex-start;
        flex-direction: column;
        justify-content: center;
        padding: 14px 0;
    }

    .hero-content {
        min-height: 360px;
        padding: 56px 0;
    }

    .feature-grid {
        grid-template-columns: 1fr;
    }

    .feature-grid article {
        min-height: auto;
    }
}