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

body {
    font-family: 'Segoe UI', 'Hiragino Kaku Gothic ProN', 'Meiryo', sans-serif;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    min-height: 100vh;
    color: #fff;
}

header {
    display: flex;
    align-items: center;
    padding: 16px 24px;
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

header .logo {
    height: 48px;
    width: auto;
}

main {
    max-width: 900px;
    margin: 0 auto;
    padding: 48px 24px;
    text-align: center;
}

main h1 {
    font-size: 2.4rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    margin-bottom: 48px;
    text-shadow: 0 2px 8px rgba(0,0,0,0.4);
}

.games-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 36px;
}

.game-card {
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 16px;
    overflow: hidden;
    width: 280px;
    text-decoration: none;
    color: #fff;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.game-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.5);
}

.game-card .thumbnail {
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    display: block;
}

.game-card .card-title {
    padding: 14px 16px;
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    background: rgba(0, 0, 0, 0.25);
    text-align: center;
}

@media (max-width: 600px) {
    main h1 {
        font-size: 1.7rem;
    }

    .game-card {
        width: 90vw;
        max-width: 360px;
    }
}