:root {
    --ink: #172033;
    --muted: #64748b;
    --paper: #ffffff;
    --soft: #f4f7fb;
    --accent: #1d4ed8;
    --line: #dbe4ef;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    color: var(--ink);
    background: var(--soft);
    line-height: 1.6;
}

.site-header,
.site-footer {
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    padding: 18px 24px;
}

.site-footer {
    border-top: 1px solid var(--line);
    border-bottom: 0;
    margin-top: 40px;
}

.logo {
    font-weight: 700;
    font-size: 22px;
}

.mock-label {
    display: inline-block;
    margin-top: 6px;
    color: var(--muted);
    font-size: 14px;
}

nav {
    margin-top: 14px;
}

nav a {
    display: inline-block;
    margin-right: 14px;
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
}

nav a:hover {
    text-decoration: underline;
}

main {
    max-width: 960px;
    margin: 32px auto;
    padding: 28px;
    background: var(--paper);
    border: 1px solid var(--line);
    border-radius: 14px;
}

.hero {
    padding: 28px;
    background: #eef4ff;
    border-radius: 12px;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-top: 22px;
}

.card {
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: #fff;
}

.partner-search {
    width: 100%;
    max-width: 420px;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 8px;
    margin-bottom: 18px;
}

.partner-item {
    padding: 12px;
    border-bottom: 1px solid var(--line);
}

@media (max-width: 700px) {
    nav a {
        display: block;
        margin: 8px 0;
    }

    main {
        margin: 16px;
        padding: 20px;
    }
}