:root {
    color-scheme: light dark;
    --background: #f7f8fa;
    --surface: #ffffff;
    --text: #15171a;
    --muted: #616873;
    --line: #dfe3e8;
    --accent: #1769e0;
    --accent-soft: #eaf2ff;
    --success: #137a4b;
    --max-width: 780px;
}

* {
    box-sizing: border-box;
}

html {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 17px;
    line-height: 1.6;
    background: var(--background);
    color: var(--text);
}

body {
    margin: 0;
}

a {
    color: var(--accent);
}

.site-header {
    border-bottom: 1px solid var(--line);
    background: color-mix(in srgb, var(--surface) 92%, transparent);
}

.nav,
.page,
.site-footer {
    width: min(calc(100% - 40px), var(--max-width));
    margin-inline: auto;
}

.nav {
    min-height: 68px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--text);
    font-weight: 700;
    text-decoration: none;
}

.brand-mark {
    width: 34px;
    height: 34px;
    display: grid;
    place-items: center;
    border-radius: 8px;
    color: #ffffff;
    background: #15171a;
    font-size: 0.78rem;
}

.nav-links {
    display: flex;
    gap: 18px;
}

.nav-links a {
    color: var(--muted);
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
}

.nav-links a[aria-current="page"] {
    color: var(--accent);
}

.page {
    padding-block: 64px 80px;
}

.eyebrow {
    margin: 0 0 8px;
    color: var(--accent);
    font-size: 0.82rem;
    font-weight: 700;
    text-transform: uppercase;
}

h1,
h2 {
    letter-spacing: 0;
    line-height: 1.2;
}

h1 {
    max-width: 680px;
    margin: 0;
    font-size: clamp(2rem, 7vw, 3.25rem);
}

h2 {
    margin: 42px 0 10px;
    font-size: 1.3rem;
}

p,
li {
    color: var(--muted);
}

.lead {
    max-width: 680px;
    margin: 18px 0 0;
    font-size: 1.08rem;
}

.meta {
    margin-top: 20px;
    color: var(--muted);
    font-size: 0.88rem;
}

.summary {
    margin-top: 36px;
    padding: 22px;
    border: 1px solid #bdd5fb;
    border-radius: 8px;
    background: var(--accent-soft);
}

.summary strong {
    color: var(--text);
}

.summary p:first-child {
    margin-top: 0;
}

.summary p:last-child {
    margin-bottom: 0;
}

.app-notice {
    margin-top: 18px;
    padding: 20px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--surface);
}

.app-notice h3 {
    margin: 0 0 8px;
    font-size: 1rem;
}

.app-notice p {
    margin: 0;
}

.contact-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 28px;
}

.button {
    display: inline-flex;
    min-height: 46px;
    align-items: center;
    justify-content: center;
    padding: 10px 16px;
    border: 1px solid var(--accent);
    border-radius: 8px;
    background: var(--accent);
    color: #ffffff;
    font-weight: 700;
    text-decoration: none;
}

.button.secondary {
    background: transparent;
    color: var(--accent);
}

.site-footer {
    padding-block: 28px 44px;
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: 0.85rem;
}

@media (max-width: 560px) {
    .nav {
        min-height: 62px;
    }

    .brand span:last-child {
        display: none;
    }

    .page {
        padding-block: 44px 64px;
    }
}

@media (prefers-color-scheme: dark) {
    :root {
        --background: #0d0f12;
        --surface: #15181d;
        --text: #f5f7fa;
        --muted: #a9b0ba;
        --line: #2c3138;
        --accent: #69a4ff;
        --accent-soft: #14233a;
    }

    .brand-mark {
        color: #15171a;
        background: #ffffff;
    }

    .summary {
        border-color: #294c7e;
    }
}