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

body {
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #ffffff;
    background: #000000;
    min-height: 100vh;
    margin: 0;
    padding: 0;
}

.centered-wrapper {
    width: 100%;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    padding: 0 2rem;
    box-sizing: border-box;
}

header {
    text-align: center;
    padding: 2rem 1rem;
    background: #111111;
    border-bottom: 2px solid #333333;
    position: relative;
}

h1 {
    font-size: 3rem;
    margin-bottom: 0.5rem;
    color: #ffffff;
}

header p {
    font-size: 1.2rem;
    color: #cccccc;
}

main {
    width: 100%;
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.rankings-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    width: 100%;
}

.ranking-item {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 120px;
    padding: 2rem 1rem;
    background: #111111;
    border: 1px solid #333333;
    border-radius: 8px;
    cursor: pointer;
    text-decoration: none;
    width: 100%;
    margin: 0 auto;
    box-sizing: border-box;
}

.ranking-item .ranking-number {
    text-align: center;
    width: 100%;
}

.ranking-item:hover {
    background: #222222;
    box-shadow: 0 2px 8px rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
    border-color: #555555;
}

.ranking-number {
    font-size: 3rem;
    font-weight: bold;
    color: #ffffff;
    margin: 0;
}

.ranking-item:hover .ranking-number {
    color: #ffffff;
}

.term-container {
    background: #111111;
    border: 1px solid #333333;
    border-radius: 12px;
    padding: 2rem;
    margin: 2rem auto;
    max-width: 800px;
    box-shadow: 0 2px 8px rgba(255, 255, 255, 0.1);
}

.term-header {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid #ffffff;
}

.term-title {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    color: #ffffff;
}

.section {
    margin-bottom: 2rem;
    text-align: center;
}

.section h2 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: #ffffff;
    padding-bottom: 0.5rem;
}

.section p {
    margin-bottom: 1rem;
    font-size: 1.1rem;
    line-height: 1.7;
    color: #fff;
}

.back-link {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 2rem;
    padding: 1rem 2rem;
    background: #ffffff;
    color: #000000;
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s ease;
    font-weight: bold;
}

.back-link:hover {
    background: #cccccc;
    transform: translateY(-2px);
    box-shadow: 0 2px 8px rgba(255, 255, 255, 0.3);
}

.no-results {
    text-align: center;
    color: #666666;
    font-style: italic;
    padding: 2rem;
}

@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    header p {
        font-size: 1rem;
    }

    main {
        padding: 0 1.5rem;
    }

    .search-container {
        margin-bottom: 1.5rem;
    }

    #searchInput {
        padding: 0.8rem;
        font-size: 1rem;
    }

    .search-result {
        padding: 1.2rem;
    }

    .suggest-button {
        padding: 8px 16px;
        font-size: 0.9rem;
        top: 0.5rem;
        right: 0.5rem;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 2rem;
    }

    header {
        padding: 1.5rem 1rem;
        position: relative;
    }

    header p {
        font-size: 0.9rem;
    }

    main {
        margin: 1rem auto;
        padding: 0 1rem;
    }

    .search-container {
        margin-bottom: 1rem;
    }

    #searchInput {
        padding: 0.75rem;
        font-size: 0.95rem;
        max-width: 100%;
    }

    .search-result {
        padding: 1rem;
        margin-bottom: 0.75rem;
    }

    .search-result h3 a {
        font-size: 1.2rem;
    }

    .suggest-button {
        padding: 6px 12px;
        font-size: 0.85rem;
        top: 0.5rem;
        right: 0.5rem;
        min-height: 36px;
        min-width: 80px;
    }
}