:root {
    --color-bg: #ffffff;
    --color-fg: #1a1a1a;
    --color-muted: #6b6b6b;
    --color-accent: #0057b7;
    --color-border: #e5e5e5;
    --max-width: 1100px;
    --space: 1rem;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: var(--color-fg);
    background: var(--color-bg);
    line-height: 1.5;
}

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

a:hover {
    text-decoration: underline;
}

.site-header {
    display: flex;
    align-items: center;
    gap: 2rem;
    padding: 1rem 2rem;
    border-bottom: 1px solid var(--color-border);
    max-width: var(--max-width);
    margin: 0 auto;
}

.logo {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--color-fg);
}

.site-nav {
    display: flex;
    gap: 1.5rem;
    flex: 1;
}

.lang-switch {
    border: 1px solid var(--color-border);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    color: var(--color-fg);
    font-size: 0.875rem;
}

main {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 2rem;
}

.hero {
    padding: 4rem 0;
    text-align: center;
}

.hero h1 {
    font-size: 2.5rem;
    margin: 0 0 1rem;
}

.hero-subline {
    color: var(--color-muted);
    font-size: 1.125rem;
    max-width: 36rem;
    margin: 0 auto 1.5rem;
}

.cta {
    display: inline-block;
    background: var(--color-accent);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    font-weight: 500;
}

.cta:hover {
    text-decoration: none;
    opacity: 0.9;
}

.content {
    margin-top: 3rem;
}

.content h2 {
    margin-top: 0;
}

.site-footer {
    border-top: 1px solid var(--color-border);
    padding: 2rem;
    text-align: center;
    color: var(--color-muted);
    max-width: var(--max-width);
    margin: 2rem auto 0;
}

.footer-nav {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    margin-bottom: 1rem;
}

.footer-nav a {
    color: var(--color-muted);
    font-size: 0.875rem;
}

.contact .subtitle {
    color: var(--color-muted);
    margin-top: -0.5rem;
    margin-bottom: 2rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    max-width: 36rem;
}

.contact-form fieldset {
    border: 1px solid var(--color-border);
    border-radius: 4px;
    padding: 1rem 1.25rem 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.contact-form legend {
    padding: 0 0.5rem;
    font-weight: 600;
}

.contact-form .field {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.contact-form .field > span {
    font-size: 0.875rem;
}

.contact-form .field abbr {
    color: var(--color-accent);
    text-decoration: none;
}

.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form input[type="tel"],
.contact-form select,
.contact-form textarea {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font: inherit;
    background: var(--color-bg);
    color: var(--color-fg);
}

.contact-form textarea {
    resize: vertical;
}

.contact-form .field-help {
    font-size: 0.875rem;
    color: var(--color-muted);
    margin: 0;
}

.contact-form .checkbox,
.contact-form .radio {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9375rem;
}

.contact-form button[type="submit"] {
    background: var(--color-accent);
    color: white;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 4px;
    font-weight: 500;
    font-size: 1rem;
    cursor: pointer;
}

.contact-form button[type="submit"]:hover {
    opacity: 0.9;
}

.form-status {
    margin: 0;
    font-size: 0.9375rem;
    min-height: 1.5em;
}

.form-status.sending { color: var(--color-muted); }
.form-status.success { color: #1f7a3a; }
.form-status.error { color: #b00020; }