/* ===== RESET & BASE ===== */
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background: #f0f4f9;
    color: #1a2634;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}
.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }

/* ===== HEADER ===== */
header {
    background: #0b1a33;
    color: #fff;
    padding: 16px 0;
    border-bottom: 3px solid #1a365d;
}
.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}
.logo a {
    font-size: 1.6rem;
    font-weight: 700;
    color: #fff;
    text-decoration: none;
}
.logo .tagline {
    font-size: 0.9rem;
    color: #8899bb;
    margin-left: 8px;
}
nav a {
    color: #c8d6e5;
    text-decoration: none;
    margin-left: 20px;
    font-size: 0.95rem;
}
nav a:hover { color: #fff; }

/* ===== MAIN ===== */
main { flex: 1; padding: 30px 0; }

/* ===== FOOTER ===== */
footer {
    background: #e6edf5;
    padding: 20px 0;
    border-top: 1px solid #d0dceb;
    margin-top: 40px;
}
.footer-inner {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 0.85rem;
    color: #445566;
}
.footer-right a {
    color: #1a365d;
    text-decoration: none;
    margin-left: 16px;
}
.footer-right a:hover { text-decoration: underline; }

/* ===== RESPONSIVE ===== */
@media (max-width: 640px) {
    .header-inner { flex-direction: column; align-items: stretch; text-align: center; }
    nav a { margin: 0 8px; }
    .footer-inner { flex-direction: column; align-items: center; text-align: center; }
    .footer-right a { margin: 0 8px; }
}