* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', sans-serif;
    background: #f8f8f8;
    color: #1a1a1a;
    line-height: 1.6;
}

.header {
    background: #ffffff;
    border-bottom: 1px solid #e5e5e5;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
    cursor: pointer;
    transition: opacity 0.2s;
}

.logo-mini {
    width: 32px;
    height: 32px;
    background: #1a1a1a;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.header-left:hover {
    opacity: 0.8;
}

.brand {
    font-size: 16px;
    font-weight: 600;
    color: #1a1a1a;
}

.brand-name {
    text-decoration: none;
    color: #1a1a1a;
}

.nav-links {
    display: flex;
    gap: 24px;
    align-items: center;
}

.auth-buttons {
    display: flex;
    gap: 12px;
    align-items: center;
    margin-left: auto;
}

.nav-link {
    text-decoration: none;
    color: #666666;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    position: relative;
    padding-bottom: 4px;
    transition: color 0.2s;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: #1a1a1a;
    transition: width 0.3s ease;
}

.nav-link:hover {
    color: #1a1a1a;
}

.nav-link:hover::after {
    width: 100%;
}

.nav-link.active {
    color: #1a1a1a;
}

.nav-link.active::after {
    width: 100%;
}

.nav-link.login-btn {
    padding: 8px 16px;
    background: #ffffff;
    border: 1px solid #e5e5e5;
    border-radius: 4px;
    text-decoration: none;
    color: #1a1a1a;
    font-size: 12px;
    font-weight: 600;
    transition: all 0.2s;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: inline-block;
    position: static;
    padding-bottom: 8px;
}

.nav-link.login-btn::after {
    display: none;
}

.nav-link.login-btn:hover {
    background: #f5f5f5;
    border-color: #1a1a1a;
}

.nav-link.signup-btn {
    padding: 8px 16px;
    background: #1a1a1a;
    border: 1px solid #1a1a1a;
    border-radius: 4px;
    text-decoration: none;
    color: #ffffff;
    font-size: 12px;
    font-weight: 600;
    transition: all 0.2s;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: inline-block;
    position: static;
    padding-bottom: 8px;
}

.nav-link.signup-btn::after {
    display: none;
}

.nav-link.signup-btn:hover {
    color: #ffffff;
    background: #333333;
    border-color: #333333;
}

.nav-link.signup-btn.active {
    background: #333333;
    border-color: #333333;
    box-shadow: 0 0 0 2px #1a1a1a;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 24px;
}

h1 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 12px;
    color: #1a1a1a;
}

.last-updated {
    color: #999999;
    font-size: 14px;
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid #e5e5e5;
}

h2 {
    font-size: 20px;
    font-weight: 700;
    margin-top: 32px;
    margin-bottom: 16px;
    color: #1a1a1a;
}

h3 {
    font-size: 16px;
    font-weight: 600;
    margin-top: 20px;
    margin-bottom: 12px;
    color: #1a1a1a;
}

p {
    margin-bottom: 16px;
    color: #333333;
    font-size: 14px;
}

ul {
    margin-left: 24px;
    margin-bottom: 16px;
}

li {
    margin-bottom: 8px;
    color: #333333;
    font-size: 14px;
}

.highlight {
    background: #f8f8f8;
    padding: 16px;
    border-left: 3px solid #1a1a1a;
    margin: 20px 0;
    border-radius: 4px;
}

.footer {
    background: #1a1a1a;
    color: #ffffff;
    padding: 40px 24px;
    border-top: 1px solid #333333;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 32px;
}

.footer-section h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.footer-link {
    color: #999999;
    text-decoration: none;
    font-size: 13px;
    margin-bottom: 8px;
    display: block;
    transition: color 0.2s;
}

.footer-link:hover {
    color: #ffffff;
}

.footer-bottom {
    border-top: 1px solid #333333;
    padding-top: 24px;
    text-align: center;
    color: #999999;
    font-size: 13px;
}

.footer-bottom p {
    color: #999999
}

@media (max-width: 768px) {
    .container { padding: 24px 20px; }
    h1 { font-size: 24px; }
    h2 { font-size: 18px; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
    .highlight { padding: 12px 16px; }
}

@media (max-width: 480px) {
    .container { padding: 20px 16px; }
    h1 { font-size: 20px; }
    .footer-grid { grid-template-columns: 1fr; }
}