body {
    margin: 0;
    font-family: "Noto Sans Thai", sans-serif;
    background: #000;
    color: #fff;
    text-align: center;
}

.container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: url("https://i.ytimg.com/vi/5-wEXBhvIHs/maxresdefault.jpg") center/cover no-repeat;
    position: relative;
    padding: 30px 18px;
}

.overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.82); /* เพิ่มความเข้มให้ข้อความอ่านง่ายขึ้น */
    backdrop-filter: blur(3px);
}

.content {
    position: relative;
    z-index: 2;
    max-width: 720px;
    line-height: 1.7;
    animation: fade 1.4s ease forwards;
    text-align: center;
    padding: 0 15px;
}

@keyframes fade {
    from { opacity: 0; transform: translateY(18px); }
    to { opacity: 1; transform: translateY(0); }
}

.portrait {
    width: 100%;
    max-width: 350px;
    height: auto;
    object-fit: cover;
    border: 3px solid #fff;
    box-shadow: 0 0 28px rgba(255, 255, 255, 0.22);
    display: block;
    margin: 0 auto 22px;
    border-radius: 16px; /* เหลี่ยมมนสวยขึ้น */
}

h1 {
    font-weight: 600;
    font-size: 2.2rem;
    margin: 12px 0 14px;
}

p {
    font-size: 1.1rem;
    margin: 6px 0;
    font-weight: 300;
}

.btn-enter {
    margin-top: 28px;
    padding: 1rem 2.4rem;
    min-width: 240px;
    border-radius: 12px;
    border: 0;
    cursor: pointer;
    background: #ffffff;
    color: #000;
    font-size: 1.15rem;
    font-weight: 500;
    transition: all 0.3s ease;
    box-shadow: 0 4px 18px rgba(0,0,0,0.25);
}

.btn-enter:hover {
    background: #e6e6e6;
    transform: translateY(-2px) scale(1.03);
    box-shadow: 0 6px 22px rgba(0,0,0,0.35);
}

.credit {
    color: rgba(255,255,255,0.65);
    font-size: .9rem;
    margin-top: 20px;
}

.credit a {
    color: #a3d4ff;
    text-decoration: underline;
}

.credit a:hover { color: #fff; }

footer {
    font-size: 0.8rem;
    opacity: 0.65;
    margin-top: 12px;
}

/* Responsive */
@media (max-width: 480px) {
    h1 { font-size: 1.7rem; }
    p { font-size: 1rem; }
    .btn-enter { padding: 0.9rem 2rem; font-size: 1rem; }
    .portrait { max-width: 280px; border-radius: 12px; }
}