html, body, div, span, object, iframe, h1, h2, h3, h4, h5, h6, p, blockquote, pre, abbr, address, cite, code, del, dfn, em, img, ins, kbd, q, samp, small, strong, sub, sup, var, b, i, dl, dt, dd, ol, ul, li, fieldset, form, label, legend, table, caption, tbody, tfoot, thead, tr, th, td, article, aside, canvas, details, figcaption, figure, footer, header, hgroup, menu, nav, section, summary, time, mark, audio, video { margin: 0px; padding: 0px; border: 0px; outline: 0px; font-size: 100%; vertical-align: baseline; background: transparent; }
body { line-height: 1; }
article, aside, details, figcaption, figure, footer, header, hgroup, menu, nav, section { display: block; }
nav ul { list-style: none; }
blockquote, q { quotes: none; }
blockquote::before, blockquote::after, q::before, q::after { content: none; }

mark { background-color: rgb(255, 255, 153); color: rgb(0, 0, 0); font-style: italic; font-weight: bold; }
del { text-decoration: line-through; }
abbr[title], dfn[title] { border-bottom: 1px dotted; cursor: help; }
table { border-collapse: collapse; border-spacing: 0px; }
hr { display: block; height: 1px; border-width: 1px 0px 0px; border-right-style: initial; border-bottom-style: initial; border-left-style: initial; border-right-color: initial; border-bottom-color: initial; border-left-color: initial; border-image: initial; border-top-style: solid; border-top-color: rgb(204, 204, 204); margin: 1em 0px; padding: 0px; }
input, select { vertical-align: middle; }
li { list-style: none; }
html, body { width: 100%; height: 100%; }
html { -webkit-tap-highlight-color: rgba(0, 0, 0, 0); }
body { font: 75% Arial, Helvetica, sans-serif; }
canvas { display: block; vertical-align: bottom; }
.count-particles { background: rgb(0, 0, 34); position: absolute; top: 48px; left: 0px; width: 80px; color: rgb(19, 232, 233); font-size: 0.8em; text-align: left; text-indent: 4px; line-height: 14px; padding-bottom: 2px; font-family: Helvetica, Arial, sans-serif; font-weight: bold; }
.js-count-particles { font-size: 1.1em; }
#stats, .count-particles { user-select: none; margin-top: 5px; margin-left: 5px; }
#stats { border-radius: 3px 3px 0px 0px; overflow: hidden; }
.count-particles { border-radius: 0px 0px 3px 3px; }
#particles-js { width: 100%; height: 100%; }

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

html {
    width: 100%;
    height: 100%;
    background: #0d0d0d;
}

body {
    width: 100%;
    min-height: 100vh;
    font-family: Arial, Helvetica, sans-serif;
    overflow-x: hidden;
    background: transparent;
    background-image: url('../picture/oii.png');
    background-repeat: no-repeat;
    /* ── Chỉnh ảnh nền ── */
    /* Lên/xuống: center 50% (mặc định), 30% (lên), 70% (xuống) */
    background-position: center 8%;
    /* To/nh�? cover (fill màn hình), 100% auto, contain (hiện đ�? */
    background-size: cover;
}

@media (min-width: 768px) {
    body {
        background-size: contain;
        background-attachment: fixed;
    }
}

#particles-js {
    position: fixed;
    inset: 0;
    z-index: 1;
    pointer-events: none;
    background: transparent !important;
}

.content-wrapper {
    position: relative;
    z-index: 2;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding: 19px 3px 16px;
    max-width: 400px;
    margin: 0 auto;
}

.logo1 {
    width: 230px;
    max-width: 16rem;
    margin: 0 auto 6px;
    filter: drop-shadow(0 2px 12px rgba(0, 0, 0, 0.5));
}
.logo1 img {
    width: 100%;
    display: block;
}

.logo2 {
    width: 320px;
    max-width: 85%;
    margin: 0 auto 25px;
    filter: drop-shadow(0 2px 12px rgba(0, 0, 0, 0.4));
}
.logo2 img {
    width: 100%;
    display: block;
}

.top1 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    width: 100%;
    max-width: 540px;
    margin: 0 auto 30px;
    padding: 22px;
    background: transparent;
    border-radius: 24px;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0);
}

@media (min-width: 500px) {
    .top1 {
        position: relative;
        left: 0px;
    }
}

.fon {
    aspect-ratio: 1 / 1;
    border-radius: 18px;
    overflow: hidden;
    position: relative;
    transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    background: url('../picture/huaban-2475144870.png') no-repeat center 20%;
    background-size: 100% 120%;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.25);
    cursor: pointer;
}
.fon::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        105deg,
        transparent 18%,
        rgba(255,255,255,.08) 36%,
        rgba(255,255,255,.08) 40%,
        transparent 58%
    );
    background-size: 200% 100%;
    background-position: 100% 0;
    pointer-events: none;
    transition: background-position .5s ease;
}
.fon:hover::after {
    background-position: 0% 0;
}

.fon a {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    padding: 18%;
}



.fon a img {
    width: 160%;
    max-width: 112px;
    max-width: 140px;
    aspect-ratio: 1 / 1;
    object-fit: contain;
    display: block;
    transform: translateY(5px);
    margin: 0 auto;
    transition: transform 0.3s ease;
}

.img2 {
    text-align: center;
    margin-top: auto;
    padding: 15px 0 10px;
}
.img2 a {
    display: inline-block;
}
.img2 a img {
    max-width: 220px;
    width: 100%;
    display: block;
    margin: 0 auto;
    border-radius: 14px;
    box-shadow: 0 6px 25px rgba(0, 0, 0, 0.4);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.img2 a img:hover {
    transform: scale(1.06);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.55);
}
.img2 h1 {
    font-size: 1.05rem;
    color: #e4be71;
    margin-top: 12px;
    font-weight: 400;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.6);
    letter-spacing: 0.03em;
}

@media screen and (max-width: 500px) {
    .top1 {
        gap: 12px;
        padding: 16px;
        max-width: 400px;
    }
    .logo1 {
        width: 180px;
    }
    .logo2 {
        width: 260px;
        margin-bottom: 18px;
    }
    .img2 h1 {
        font-size: 0.95rem;
    }
    .tip-box {
        width: 180px;
        font-size: 10px;
    }
}

@media screen and (max-width: 390px) {
    .top1 {
        gap: 10px;
        padding: 14px;
        border-radius: 18px;
    }
    .fon {
        border-radius: 14px;
    }
    .logo1 {
        width: 150px;
    }
    .logo2 {
        width: 220px;
    }
    .img2 a img {
        max-width: 180px;
    }
    .tip-box {
        width: 160px;
        font-size: 9px;
    }
}

@media screen and (max-width: 340px) {
    .top1 {
        gap: 8px;
        padding: 10px;
    }
    .logo1 {
        width: 130px;
    }
    .logo2 {
        width: 180px;
    }
    .img2 h1 {
        font-size: 0.85rem;
    }
    .tip-box {
        width: 140px;
        font-size: 8px;
    }
}

.badge-icon {
    position: absolute;
    top: 71px;
    right: 16px;
    width: 22px;
    height: 22px;
    border-radius: 6px;
    object-fit: cover;
    pointer-events: none;
    z-index: 3;
}
.vip-fon .badge-icon {
    display: none;
}
.main {
    position: static !important;
}
#particles-js {
    background-color: transparent !important;
    background-image: none !important;
}

/* ===== VIP Card Overlay ===== */
.vip-fon {
    position: relative;
    overflow: visible;
}

.vip-btn-wrap {
    position: absolute;
    bottom: 3px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
}

.help-icon {
    position: absolute;
    top: -16px;
    left: -8px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background:
        linear-gradient(180deg, #f5d684, #e8b830);
    color: #5a3e0a;
    font-size: 11px;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 20;
    box-shadow:
        0 0 4px rgba(200,160,60,.4),
        inset 0 1px 2px rgba(255,255,255,.4);
    transition: .2s;
    pointer-events: auto;
}

.help-icon:active {
    transform: scale(.92);
}

.tip-box {
    position: absolute;
    bottom: calc(100% + 28px);
    left: -8px;
    width: 220px;
    padding: 10px 12px;
    border-radius: 14px;
    background: #fff;
    color: #5a3e0a;
    font-size: 11px;
    line-height: 1.6;
    box-shadow: 0 8px 24px rgba(0,0,0,.25);
    display: none;
    z-index: 100;
    pointer-events: auto;
    border: 1.5px solid #8b6914;
}

.tip-box::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 25%;
    width: 0;
    height: 0;
    border-left: 7px solid transparent;
    border-right: 7px solid transparent;
    border-top: 7px solid #fff;
    filter: drop-shadow(0 1.5px 0 #8b6914);
}

.vip-btn-wrap:hover .tip-box {
    display: block;
    animation: popup .25s ease forwards;
}

/* Left column — tooltip & arrow shifted left */
.top1 > .fon:nth-child(3n+1) .tip-box {
    left: -27px;
}
.top1 > .fon:nth-child(3n+1) .tip-box::after {
    left: 15px;
}

/* Middle column — tooltip shifted left, arrow at button center */
.top1 > .fon:nth-child(3n+2) .tip-box {
    left: -58px;
}
.top1 > .fon:nth-child(3n+2) .tip-box::after {
    left: 58px;
}

/* Right column — flip tooltip to the left */
.top1 > .fon:nth-child(3n+3) .tip-box {
    left: auto;
    right: -8px;
}
.top1 > .fon:nth-child(3n+3) .tip-box::after {
    left: auto;
    right: 25%;
}


.vip-btn {
    width: 66px;
    height: 20px;
    border: none;
    outline: none;
    cursor: pointer;
    border-radius: 20px;
    position: relative;
    overflow: hidden;
    font-size: 6px;
    font-weight: 700;
    letter-spacing: 0.5px;
    color: #4a3410;
    background:
        linear-gradient(180deg, #f7d98a 0%, #e8b830 45%, #f0ca5a 100%);
    box-shadow:
        inset 0 1px 4px rgba(255,255,255,.4),
        inset 0 -2px 4px rgba(200,160,60,.3),
        0 0 6px rgba(200,160,60,.3);
    animation: floatBtn 2.8s ease-in-out infinite;
    transition: .25s;
    z-index: 11;
    pointer-events: auto;
}

.vip-btn:hover {
    transform: scale(1.03);
}

.vip-btn::before {
    content: '';
    position: absolute;
    inset: 2px;
    border-radius: 18px;
    border: 1px solid rgba(200,160,60,.5);
    box-shadow:
        inset 0 0 2px rgba(255,255,255,.3);
}

.vip-btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        105deg,
        transparent 20%,
        rgba(255,255,255,.12) 40%,
        rgba(255,255,255,.12) 60%,
        transparent 80%
    );
    transform: translateX(-100%);
    animation: shineBtn 3.5s ease infinite;
    pointer-events: none;
}

@keyframes shineBtn {
    0% { transform: translateX(-100%); }
    45% { transform: translateX(100%); }
    100% { transform: translateX(100%); }
}

@keyframes floatBtn {
    0%,100% { transform: translateY(0px); }
    50% { transform: translateY(-5px); }
}

@keyframes popup {
    from { opacity: 0; transform: translateY(-10px) scale(.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}