body {
    background-color: #0f141a;
    color: #f9f9f9;
    font-family: 'Helvetica Neue', Arial, 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.8;
}


header {
    background: linear-gradient(rgba(15, 20, 26, 0.5), #0f141a),
        url('https://images.unsplash.com/photo-1542751371-adc38448a05e?q=80&w=1200') no-repeat center/cover;
    padding: 80px 20px;
    text-align: center;
    border-bottom: 3px solid #ff4655;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 900;
    margin: 0 0 10px 0;
    letter-spacing: 2px;
    color: #fff;
    text-shadow: 0px 0px 10px rgba(255, 70, 85, 0.5);
}

header p {
    font-size: 1.1rem;
    color: #ff4655;
    font-weight: bold;
    margin: 0;
}

section.rule {
    max-width: 700px;
    margin: 40px auto;
    padding: 30px;
    background-color: #161d24;
    border: 1px solid #293542;
    border-radius: 4px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
}

section h2 {
    font-size: 1.6rem;
    margin-top: 0;
    margin-bottom: 25px;
    padding-left: 15px;
    border-left: 5px solid #ff4655;
    letter-spacing: 1px;
}

section.rule h3 {
    font-size: 1.1rem;
    color: #00f3ff;
    margin-top: 0;
    margin-bottom: 20px;
    background-color: rgba(0, 243, 255, 0.05);
    padding: 10px 15px;
    border-left: 3px solid #00f3ff;
}

ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

ul li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 12px;
    font-size: 1rem;
}

ul li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 11px;
    width: 6px;
    height: 6px;
    background-color: #ff4655;
}

ul li strong {
    color: #ece8e1;
    display: inline-block;
    width: 110px;
}


section.entry {
    text-align: center;
    margin: 60px 0;
}

.btn {
    display: inline-block;
    width: 260px;
    background-color: #ff4655;
    color: #fff;
    padding: 18px 0;
    font-size: 1.2rem;
    font-weight: bold;
    text-decoration: none;
    letter-spacing: 1px;
    border: 1px solid #ff4655;
    box-shadow: 0 0 15px rgba(255, 70, 85, 0.3);
    transition: all 0.3s ease;
}


.btn:hover {
    background-color: transparent;
    color: #ff4655;
    box-shadow: 0 0 25px rgba(255, 70, 85, 0.7);
}