:root {
    --blue: #2f6fbe;
    --blue-dark: #245896;
    --text: #1c2430;
    --muted: #5b6775;
    --bg: #f6f8fb;
    --white: #fff;
    --line: #dbe3ee;
}

* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    color: var(--text);
    background: var(--white);
}
a { color: var(--blue); text-decoration: none; }

.site-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
    padding: 18px 8%;
    border-bottom: 1px solid var(--line);
}
.logo img { height: 36px; width: auto; }
nav { display: flex; align-items: center; gap: 18px; }
nav a.active { color: var(--blue-dark); font-weight: bold; }
.langs a { font-size: 14px; }

main { padding: 48px 8% 80px; }
.hero h1 { font-size: clamp(28px, 4vw, 48px); max-width: 18ch; margin: 0 0 16px; }
.hero p { max-width: 62ch; color: var(--muted); font-size: 18px; }
.actions { margin-top: 28px; display: flex; gap: 12px; flex-wrap: wrap; }

.btn {
    display: inline-block;
    padding: 12px 18px;
    border: 1px solid var(--blue);
    color: var(--blue);
}
.btn.primary { background: var(--blue); color: #fff; }

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
}
.card, .roles article {
    background: var(--bg);
    border: 1px solid var(--line);
    padding: 18px;
}
.page-head h1 { margin-top: 0; }
.site-footer {
    border-top: 1px solid var(--line);
    padding: 20px 8%;
    color: var(--muted);
    font-size: 14px;
}
.lang-switch select {
    font: inherit;
    color: var(--text);
    border: 1px solid var(--line);
    background: var(--white);
    padding: 6px 8px;
}
.login-form {
    max-width: 420px;
}
.login-form label {
    display: block;
    margin: 12px 0;
}
.login-form input {
    display: block;
    width: 100%;
    margin-top: 6px;
    padding: 10px;
    border: 1px solid var(--line);
    font: inherit;
}
.login-form .error {
    color: #b00020;
}
.stack { }