#bubbles {
    position: fixed;
    top: 0;
    left: 0;
    pointer-events: none;
    z-index: 0;
}
 
.hero, .about {
    position: relative;
    z-index: 1;
}
 
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, Helvetica, sans-serif;
}
 
body {
    background: radial-gradient(
        ellipse 80% 60% at 50% 0%,
        #1a6fa8 0%,
        #103b60 35%,
        #07131f 65%,
        #02060d 100%
    );
    background-size: 100% 120%;
    animation: gradientMove 8s ease infinite;
    color: white;
    overflow-x: hidden;
}
 
@keyframes gradientMove {
    0%   { background-position: 0% 0%; }
    50%  { background-position: 0% 100%; }
    100% { background-position: 0% 0%; }
}
 
.hero {
    min-height: 100dvh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 60px 20px;
}
 
.container{

    width:min(100%,420px);

    margin:auto;

    padding:24px;

}
 
.logo {
    margin-bottom: 45px;
    display: flex;
    justify-content: center;
}
 
.logo-scroll {
    display: flex;
    justify-content: center;
}
 
.logo img {
    width:clamp(150px,40vw,220px);
    height: auto;
    animation: float 5s ease-in-out infinite;
    filter:
        drop-shadow(0 0 8px rgba(0,191,255,.5))
        drop-shadow(0 0 25px rgba(0,191,255,.25));
}
 
.logo img:hover {
    transform: scale(1.05);
    filter:
        drop-shadow(0 0 15px #00bfff)
        drop-shadow(0 0 35px rgba(0,191,255,.5));
}
 
@keyframes float {
    0%   { transform: translateY(0px) rotate(0deg); }
    25%  { transform: translateY(-5px) rotate(1deg); }
    50%  { transform: translateY(-10px) rotate(0deg); }
    75%  { transform: translateY(-5px) rotate(-1deg); }
    100% { transform: translateY(0px) rotate(0deg); }
}
 
.menu {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}
 
.menu-btn {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    width:min(100%,320px);
    height:58px;
    font-size:17px;
    text-decoration: none;
    color: white;
    border-radius: 12px;
    background: rgba(255,255,255,.15);
    transition: .25s;
}
 .menu-btn:hover {
    background: rgba(255,255,255,.25);
    transform: translateY(-3px);
}
.menu-btn:active{

    transform:scale(.97);
    background: rgba(255,255,255,.25);
    transform: translateY(-3px);
}
 
.niche-box {
    margin-top: 28px;
    padding: 18px 28px;
    border-radius: 16px;
    background: rgba(0, 191, 255, 0.08);
    border: 1px solid rgba(0, 191, 255, 0.25);
    text-align: center;
    backdrop-filter: blur(12px);
    animation: fadeInUp 0.8s ease 0.3s both;
}
 
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
}
 
.niche-tags {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;

    gap: 12px 18px;
}
.niche-tag {
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 2px;
    color: #00bfff;
}
 
.niche-tag {
    padding: 8px 14px;
    border-radius: 999px;

    background: rgba(255,255,255,.08);
    border: 1px solid rgba(255,255,255,.12);

    font-size: 13px;
    font-weight: 700;
}
 
.niche-sub {
    font-size: 12px;
    letter-spacing: 2px;
    color: rgba(255, 255, 255, 0.55);
    line-height: 1.7;
}
 
.niche-cities {
    color: rgba(255, 255, 255, 0.85);
    font-weight: 700;
    letter-spacing: 3px;
}
 
.about {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px 20px 60px;
}
 
.about-container {
    text-align: center;
    max-width: 600px;
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}
 
.about-container.visible {
    opacity: 1;
    transform: translateY(0);
}
 
.vietnam-flag {
    font-size: 80px;
    margin-bottom: 20px;
}
 
.about h2 {
    font-size: 28px;
    letter-spacing: 4px;
    margin-bottom: 20px;
    color: #00bfff;
}
 
.deals {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 3px;
    color: #ffd700;
    margin-top: 12px;
}
 
.about p {
    font-size: 16px;
    line-height: 1.8;
    color: rgba(255,255,255,0.8);
}
 
@media (max-width: 768px) {
    .logo img { width: 180px; }
    .menu-btn { width: 90%; }
 
    .about h2 {
        font-size: 18px;
        letter-spacing: 2px;
    }
 
    .vietnam-flag {
        font-size: 52px;
        margin-bottom: 14px;
    }
 
    .deals {
        font-size: 16px;
        letter-spacing: 2px;
    }
 
    .niche-tag {
        font-size: 11px;
        letter-spacing: 1px;
    }
 
    .niche-cities {
        font-size: 11px;
        letter-spacing: 1px;
    }
}