  html {
    height: 100%;
    box-sizing: border-box;
    font-size: 16px; /* Base font size for scalability */
}

*, *:before, *:after {
    box-sizing: inherit;
}

body {
    position: relative;
    height: 100%;
    margin: 0;
      background-color: #12161C;
    color: #a4a8a4;
    font-size: 1rem; /* Relative unit */
    font-family: "Inter", sans-serif;
    line-height: 1.4;
    overflow-x: hidden;
}

a {
    color: #b1b4b1;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover, a:focus {
    color: #cbcdcb;
    outline: none; /* For modern browsers */
    text-decoration: underline;
}

strong {
    font-weight: 600;
    color: #22c55e;
}

.container {
    max-width: 56rem; /* Flexible container size */
    margin: 0 auto;
    padding: 1rem;
    width: 100%;
}

.content {
    position: relative;
    width: 100%;
}

.content .header {
    padding: 4rem 1rem 0.5rem;
    text-align: center;
    z-index: 1;
}

.content .header p {
    font-size: 1.2rem;
    font-weight: 500;
    color: #e5e5e5;
    margin-top: 0.5rem;
}

.content .main {
    position: relative;
    margin: 1rem auto;
    z-index: 1;
      background-color: #1e2430;
    border-radius: 0.7rem;
    padding: 2rem;
              border: 1px solid #3c4556;

}

.content .main ul.m-list {
    margin: 1rem 0;
    padding: 0;
    list-style: none;

        }

.content .main ul.m-list li {
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #4b566a;
    padding: 0.8rem 1rem;
    margin: 0.5rem 0;
    border-radius: 0.4rem;
    border: 1px solid #3e403f;
    transition: background 0.3s, border-color 0.3s;
    color: #777b77;
}


.content .main ul.m-list li span:first-child {
    font-weight: 600;
    color: #e5e5e5;
    font-size: 1.1rem;
}

.content .main ul.m-list li span:last-child {
    display: inline-flex;
    align-items: center;
    color: white;
    font-size: 1rem;
    transition: color 0.3s ease;
}

.content .main ul.m-list li span:last-child:before {
    content: "";
    display: inline-block;
    background: #22c55e;
    width: 0.5rem;
    height: 0.5rem;
    border-radius: 50%;
    margin-right: 0.5rem;
}

.content .main ul.m-list li:hover {
    background: #003a42;
    border-color: #00acc1;
}

.content .main ul.m-list li:hover span:last-child {
    color: #e5e5e5;
}

.content .main .notice {
    background: #131514;
    padding: 1.5rem 1rem;
    border-radius: 0.5rem;
    display: flex;
    gap: 1rem;
}

.content .main .notice .start i {
    font-size: 1.5rem;
    color: #e5e5e5;
}

.content .main .notice .stop {
    margin-top: 0.2rem;
    font-size: 1rem;
    color: #e5e5e5;
}

.content .main .notice .stop .twitter {
    background: #00acc1;
    border-radius: 0.3rem;
    padding: 0.4rem 0.6rem;
    display: inline-block;
    color: #131514;
    font-weight: 600;
    text-decoration: none;
    transition: background 0.3s ease;
}

.content .main .notice .stop .twitter:hover {
    background: #00d9f4;
}

.content .footer {
    text-align: center;
    margin: 2rem 0;
}

.faq img {
    display: block;
    margin: 1rem auto;
    max-width: 100%;
    height: auto;
}

@media (max-width: 700px) {
    body {
        font-size: 0.9rem;
    }

    .content .header p {
        font-size: 1rem;
    }

    .content .main ul.m-list li {
        padding: 0.6rem 0.8rem;
    }
}

h1, h2 {
    color: #ffffff; /* MÃƒÆ’ u trÃƒÂ¡Ã‚ÂºÃ‚Â¯ng */
}
h3 {
    color: #e5e5e5; /* MÃƒÆ’ u trÃƒÂ¡Ã‚ÂºÃ‚Â¯ng nhÃƒÂ¡Ã‚ÂºÃ‚Â¡t */
}
p {
    line-height: 1.2; /* GiÃƒÂ¡Ã‚ÂºÃ‚Â£m line-height xuÃƒÂ¡Ã‚Â»Ã¢â‚¬Ëœng 1.2 thay vÃƒÆ’Ã‚Â¬ 1.4 */
       margin-bottom: 0.5em; /* GiÃƒÂ¡Ã‚ÂºÃ‚Â£m khoÃƒÂ¡Ã‚ÂºÃ‚Â£ng cÃƒÆ’Ã‚Â¡ch bottom margin cÃƒÂ¡Ã‚Â»Ã‚Â§a p */
}

h1, h2, h3 {
    line-height: 1.1; /* GiÃƒÂ¡Ã‚ÂºÃ‚Â£m khoÃƒÂ¡Ã‚ÂºÃ‚Â£ng cÃƒÆ’Ã‚Â¡ch giÃƒÂ¡Ã‚Â»Ã‚Â¯a cÃƒÆ’Ã‚Â¡c dÃƒÆ’Ã‚Â²ng cho tiÃƒÆ’Ã‚Âªu Ãƒâ€žÃ¢â‚¬ËœÃƒÂ¡Ã‚Â»Ã‚Â */
}

.bntl {
    background-color: #ff5722; /* MÃƒÆ’ u cam Ãƒâ€žÃ¢â‚¬ËœÃƒÂ¡Ã‚ÂºÃ‚Â­m, nÃƒÂ¡Ã‚Â»Ã¢â‚¬Â¢i bÃƒÂ¡Ã‚ÂºÃ‚Â­t */
    color: white; /* ChÃƒÂ¡Ã‚Â»Ã‚Â¯ trÃƒÂ¡Ã‚ÂºÃ‚Â¯ng Ãƒâ€žÃ¢â‚¬ËœÃƒÂ¡Ã‚Â»Ã†â€™ tÃƒâ€ Ã‚Â°Ãƒâ€ Ã‚Â¡ng phÃƒÂ¡Ã‚ÂºÃ‚Â£n */
    font-weight: bold; /* TÃƒâ€žÃ†â€™ng Ãƒâ€žÃ¢â‚¬ËœÃƒÂ¡Ã‚Â»Ã¢â€žÂ¢ dÃƒÆ’ y chÃƒÂ¡Ã‚Â»Ã‚Â¯ */
    padding: 10px 20px; /* TÃƒâ€žÃ†â€™ng khoÃƒÂ¡Ã‚ÂºÃ‚Â£ng cÃƒÆ’Ã‚Â¡ch giÃƒÂ¡Ã‚Â»Ã‚Â¯a chÃƒÂ¡Ã‚Â»Ã‚Â¯ vÃƒÆ’  viÃƒÂ¡Ã‚Â»Ã‚Ân */
    margin: 5px 0; /* KhoÃƒÂ¡Ã‚ÂºÃ‚Â£ng cÃƒÆ’Ã‚Â¡ch giÃƒÂ¡Ã‚Â»Ã‚Â¯a cÃƒÆ’Ã‚Â¡c mÃƒÂ¡Ã‚Â»Ã‚Â¥c */
    border-radius: 8px; /* LÃƒÆ’ m bo gÃƒÆ’Ã‚Â³c Ãƒâ€žÃ¢â‚¬ËœÃƒÂ¡Ã‚Â»Ã†â€™ trÃƒÆ’Ã‚Â´ng mÃƒÂ¡Ã‚Â»Ã‚Âm mÃƒÂ¡Ã‚ÂºÃ‚Â¡i hÃƒâ€ Ã‚Â¡n */
    cursor: pointer; /* ThÃƒÆ’Ã‚Âªm biÃƒÂ¡Ã‚Â»Ã†â€™u tÃƒâ€ Ã‚Â°ÃƒÂ¡Ã‚Â»Ã‚Â£ng chuÃƒÂ¡Ã‚Â»Ã¢â€žÂ¢t chÃƒÂ¡Ã‚Â»Ã¢â‚¬Â° tay */
    text-align: center; /* CÃƒâ€žÃ†â€™n giÃƒÂ¡Ã‚Â»Ã‚Â¯a nÃƒÂ¡Ã‚Â»Ã¢â€žÂ¢i dung */
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2); /* Ãƒâ€žÃ‚ÂÃƒÂ¡Ã‚Â»Ã¢â‚¬Â¢ bÃƒÆ’Ã‚Â³ng Ãƒâ€žÃ¢â‚¬ËœÃƒÂ¡Ã‚Â»Ã†â€™ thÃƒÆ’Ã‚Âªm chiÃƒÂ¡Ã‚Â»Ã‚Âu sÃƒÆ’Ã‚Â¢u */
    transition: transform 0.2s, background-color 0.2s; /* HiÃƒÂ¡Ã‚Â»Ã¢â‚¬Â¡u ÃƒÂ¡Ã‚Â»Ã‚Â©ng khi hover */
}
.content .main ul.m-list li.bntl:hover {
    background-color: #f57c00; /* Cam dÃƒÂ¡Ã‚Â»Ã¢â‚¬Â¹u cho hiÃƒÂ¡Ã‚Â»Ã¢â‚¬Â¡u ÃƒÂ¡Ã‚Â»Ã‚Â©ng hover */
       transform: scale(1.05); /* PhÃƒÆ’Ã‚Â³ng to nhÃƒÂ¡Ã‚ÂºÃ‚Â¹ khi hover */
}
.content .main ul.m-list li.bntl {
    background-color: #4a4a4a; /* Cam sÃƒÆ’Ã‚Â¡ng, dÃƒÂ¡Ã‚Â»Ã¢â‚¬Â¹u mÃƒÂ¡Ã‚ÂºÃ‚Â¯t */
}

/* Add this CSS to ensure responsive images */
img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto; /* Optional: Center the image */
}
h1, h2, h3, p {
    margin: 0.5em 0; /* GiÃƒÂ¡Ã‚ÂºÃ‚Â£m khoÃƒÂ¡Ã‚ÂºÃ‚Â£ng cÃƒÆ’Ã‚Â¡ch dÃƒÂ¡Ã‚Â»Ã‚Âc giÃƒÂ¡Ã‚Â»Ã‚Â¯a cÃƒÆ’Ã‚Â¡c thÃƒÂ¡Ã‚ÂºÃ‚Â» */
}
        
         .btn-link {
      display: inline-block;
      padding: 12px 20px;
      background-color: #ff4081;
      color: white;
      text-decoration: none;
      border-radius: 6px;
      margin: 15px 0;
      font-weight: bold;
      transition: background 0.3s ease;
    }

    .btn-link:hover {
      background-color: #e73370;
    }