* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: system-ui, -apple-system, sans-serif;
}
body {
    background-color: #121217;
    color: #d1d5db;
    line-height: 1.7;
    padding: 30px 20px;
    min-height: 100vh;
}
.container {
    max-width: 900px;
    margin: 0 auto;
}
nav {
    background: #1e1e28;
    padding: 16px;
    border-radius: 16px;
    margin-bottom: 50px;
    text-align: center;
}
nav a {
    margin: 0 18px;
    text-decoration: none;
    color: #93c5fd;
    font-size: 18px;
    font-weight: 500;
}
nav a:hover {
    color: #ffffff;
}
nav a.active {
    color: #ffffff;
}
h1 {
    text-align: center;
    margin-bottom: 30px;
    font-size: 32px;
    color: #ffffff;
}
.section-title {
    font-size: 18px;
    font-weight: 600;
    margin: 30px 0 16px;
    padding-left: 10px;
    border-left: 4px solid #60a5fa;
    color: #e5e7eb;
}
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 18px;
}
.card {
    background: #1e1e28;
    border-radius: 16px;
    padding: 24px;
    transition: 0.3s ease;
}
.card:hover {
    transform: translateY(-4px);
    background: #272736;
}
.card.year-card {
    border-left: 4px solid #f6ad55;
}
.card h3 {
    font-size: 17px;
    color: #fff;
    margin-bottom: 10px;
}
.price {
    font-size: 16px;
    font-weight: 600;
    color: #f87171;
    margin: 6px 0;
}
.countdown {
    font-size: 15px;
    font-weight: 600;
    margin-top: 10px;
}
.normal {
    color: #4ade80;
}
.warning {
    color: #fb923c;
}
.expired {
    color: #f87171;
}
.article-item {
    background: #1e1e28;
    border-radius: 16px;
    padding: 24px;
    margin: 16px 0;
    transition: 0.3s ease;
}
.article-item:hover {
    background: #272736;
}
.article-item h3 {
    color: #fff;
    margin-bottom: 8px;
}
footer {
    text-align: center;
    margin-top: 60px;
    color: #6b7280;
    font-size: 14px;
}