:root{--bg:#10131a;--panel:#171b25;--gold:#e8c06a;--red:#b8321f;--text:#e9e4d6;--mute:#9a9484}
@media (prefers-color-scheme:light){:root{--bg:#10131a}} /* trang luôn tối, đúng tông game */
*{box-sizing:border-box;margin:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font:16px/1.6 system-ui,"Segoe UI",Roboto,sans-serif}
img{display:block;max-width:100%;height:auto}
a{color:inherit}
header{position:fixed;inset:0 0 auto;z-index:10;display:flex;align-items:center;justify-content:space-between;padding:10px max(16px,4vw);background:linear-gradient(#10131aee,#10131a00)}
header b{font-size:18px;letter-spacing:.04em;color:var(--gold)}
nav{display:flex;gap:20px;align-items:center}
nav a{text-decoration:none;font-size:14px;color:var(--text)}
.play{display:inline-block;padding:12px 34px;border-radius:6px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;text-decoration:none;color:#2a1805;background:linear-gradient(#f4d78a,#d9a73f);box-shadow:0 0 0 2px #7a5a1c,0 6px 20px #0008}
.play:hover{filter:brightness(1.1)}
.play.big{padding:18px 64px;font-size:22px}
.hero{position:relative;min-height:100svh;display:grid;place-items:end center;text-align:center;padding:120px 16px 64px;background:#000 url(hero.webp) center top/cover no-repeat}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(#0000 40%,#10131a)}
.hero>div{position:relative;z-index:1}
.hero p{max-width:560px;margin:0 auto 22px;font-size:18px;text-shadow:0 2px 8px #000}
.sub{margin-top:12px;font-size:13px;color:var(--mute)}
section{padding:72px max(16px,6vw)}
h2{font-size:clamp(24px,4vw,38px);text-transform:uppercase;letter-spacing:.06em;color:var(--gold);margin-bottom:12px}
.blk{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;max-width:1100px;margin:0 auto}
.blk:nth-of-type(even) .t{order:2}
.blk img{border-radius:8px;box-shadow:0 10px 40px #000a;margin:auto}
.blk .t p{color:var(--text);opacity:.9}
.alt{background:var(--panel)}
.idx{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;max-width:1100px;margin:32px auto 0;list-style:none;padding:0}
.idx a{display:block;padding:10px 20px;border:1px solid #3a3320;border-radius:999px;text-decoration:none;font-size:14px}
.idx a:hover{border-color:var(--gold);color:var(--gold)}
.cta{text-align:center}
footer{padding:40px max(16px,6vw);background:#0a0c11;color:var(--mute);font-size:13px;text-align:center}
footer p+p{margin-top:8px}
.age{display:inline-block;margin-top:12px;border:2px solid var(--red);color:var(--red);font-weight:700;padding:2px 10px;border-radius:4px}
@media (max-width:760px){
 .blk{grid-template-columns:1fr;gap:20px}.blk:nth-of-type(even) .t{order:0}
 nav a.n{display:none}header b{font-size:13px}header .play{padding:8px 14px;font-size:13px;white-space:nowrap}.dl a,.dl span{min-width:0;width:100%}section{padding:48px 16px}.play.big{padding:16px 44px;font-size:18px}
}

.dl{display:flex;gap:14px;flex-wrap:wrap;justify-content:center;margin-top:18px}
.dl a,.dl span{display:inline-flex;flex-direction:column;align-items:flex-start;min-width:190px;padding:10px 22px;border:1px solid #5a4a22;border-radius:8px;background:#0008;text-decoration:none;color:var(--text)}
.dl small{font-size:11px;color:var(--mute);letter-spacing:.08em;text-transform:uppercase}.dl b{font-size:18px}
.dl .soon{opacity:.6;cursor:not-allowed}.dl .soon small{color:var(--gold)}
.steps{counter-reset:s;list-style:none;padding:0;display:grid;gap:14px;max-width:1100px;margin:24px auto}
.steps li{counter-increment:s;background:var(--panel);border:1px solid #2c2a22;border-radius:8px;padding:16px 16px 16px 64px;position:relative}
.steps li::before{content:counter(s);position:absolute;left:16px;top:14px;width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:var(--gold);color:#2a1805;font-weight:700}
.wrap{max-width:1100px;margin:0 auto}.wrap h2{margin-top:8px}.cards{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));margin-top:16px}
.cards>div{background:var(--panel);border:1px solid #2c2a22;border-radius:8px;padding:16px}.cards h3{color:var(--gold);margin-bottom:6px}
kbd{background:#0006;border:1px solid #5a4a22;border-bottom-width:2px;border-radius:4px;padding:0 7px;font-size:14px}
.page{padding-top:96px}details{background:var(--panel);border:1px solid #2c2a22;border-radius:8px;padding:12px 16px;margin-top:10px}summary{cursor:pointer;color:var(--gold);font-weight:600}

html,body{overflow-x:hidden}