:root{--bg:#07110f;--surface:#10241f;--ink:#f5f1df;--muted:#a8b6ad;--lime:#d8ff57;--orange:#ff6a3d;--line:#28423a}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,system-ui,sans-serif}.app{min-height:100vh;background:var(--bg)}a{color:inherit;text-decoration:none}.nav{height:76px;display:flex;align-items:center;justify-content:space-between;padding:0 5vw;border-bottom:1px solid #ffffff12;position:sticky;top:0;z-index:20;background:#07110fe6;backdrop-filter:blur(16px)}.brand{display:flex;align-items:center;gap:10px;font-weight:900;letter-spacing:-.04em;font-size:21px}.mark{width:30px;height:30px;border:2px solid var(--lime);border-radius:8px;display:grid;place-items:center;transform:rotate(-8deg)}.mark i{width:12px;height:12px;background:var(--lime);border-radius:50%}.navlinks{display:flex;gap:28px;color:#b9c8bf;font-size:14px;font-weight:650}.navlinks a:hover{color:var(--lime)}button{font:inherit}.cta{background:var(--lime);color:#0a1713;border:0;padding:12px 18px;border-radius:999px;font-weight:850;cursor:pointer}.hero{padding:92px 5vw 70px;display:grid;grid-template-columns:1.15fr .85fr;gap:7vw;align-items:center;max-width:1400px;margin:auto}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--lime);font-size:12px;font-weight:850;text-transform:uppercase;letter-spacing:.14em}.dot{width:7px;height:7px;border-radius:50%;background:var(--orange);box-shadow:0 0 18px var(--orange)}h1{font-size:clamp(58px,8vw,112px);line-height:.88;letter-spacing:-.075em;margin:18px 0 26px}h1 span{color:var(--lime)}.hero p{font-size:20px;line-height:1.55;color:#b6c5bc;max-width:630px;margin:0 0 30px}.actions{display:flex;gap:12px;flex-wrap:wrap}.btn2{border:1px solid #3a564c;background:transparent;color:var(--ink);padding:12px 18px;border-radius:999px;font-weight:800}.phone-wrap{position:relative;min-height:470px;display:grid;place-items:center}.phone{width:500px;height:280px;border:7px solid #203a32;border-radius:38px;background:var(--lime);box-shadow:0 24px 70px #00000047;transform:rotate(6deg);padding:13px;position:relative}.phone:before{content:"";position:absolute;top:50%;left:8px;transform:translateY(-50%);width:20px;height:80px;border-radius:0 15px 15px 0;background:#203a32}.screen{height:100%;border-radius:27px;background:#0b1815;padding:22px 22px 15px 38px;overflow:hidden}.screen small{color:#9fb0a7}.screen h3{font-size:25px;line-height:.95;margin:8px 0 14px}.tile{background:#17332b;border-radius:14px;padding:10px 13px;margin:7px 0;display:inline-block;width:31%;vertical-align:top;min-height:76px;margin-right:1%}.tile b{display:block}.tile em{font-style:normal;color:var(--lime);font-size:11px}.float{position:absolute;background:#f5f1df;color:#0a1713;padding:14px 17px;border-radius:17px;font-weight:850;box-shadow:0 24px 70px #00000047}.f1{right:0;top:70px;transform:rotate(5deg)}.f2{left:0;bottom:55px;transform:rotate(-5deg);background:var(--orange);color:white}.section{padding:90px 5vw;max-width:1400px;margin:auto}.section-head{display:flex;justify-content:space-between;gap:40px;align-items:end;margin-bottom:35px}.kicker{color:var(--orange);font-size:12px;text-transform:uppercase;letter-spacing:.15em;font-weight:900}h2{font-size:clamp(38px,5vw,68px);letter-spacing:-.06em;line-height:.95;margin:8px 0}.section-head p{color:var(--muted);max-width:470px;line-height:1.55}.feature{display:grid;grid-template-columns:1.3fr .7fr;gap:18px}.card{background:var(--surface);border:1px solid var(--line);border-radius:28px;padding:32px}.challenge{min-height:390px;overflow:hidden;background:linear-gradient(135deg,#163b30,#0d211b)}.badge{display:inline-block;background:var(--lime);color:#0a1713;padding:8px 11px;border-radius:999px;font-weight:900;font-size:11px}.challenge h3{font-size:48px;letter-spacing:-.06em;max-width:600px;line-height:.95;margin:24px 0 15px}.challenge p,.side p{color:#c0d0c6;max-width:590px;line-height:1.55}.prize{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px}.prize div{padding:13px 15px;border:1px solid #416158;border-radius:15px}.prize b{display:block;font-size:21px}.prize span{font-size:11px;color:#9fb2a8}.side h3{font-size:29px;letter-spacing:-.04em;margin:8px 0 16px}.rules{margin-top:24px;padding-top:20px;border-top:1px solid var(--line);font-size:13px;color:#c0cec7}.games{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.game{min-height:250px;display:flex;flex-direction:column;justify-content:space-between}.num{font-size:12px;color:var(--lime);font-weight:900}.game h3{font-size:28px;margin:18px 0 7px;letter-spacing:-.04em}.game p{color:var(--muted);font-size:14px;line-height:1.5}.date{color:#e7eee8;font-weight:800;font-size:12px}.live{background:var(--lime);color:#0a1713;padding:5px 8px;border-radius:6px}.how{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.step{padding:28px;border-top:2px solid var(--lime);background:#0c1b17;border-radius:18px}.step strong{font-size:12px;color:var(--lime)}.step h3{font-size:24px;margin:25px 0 8px}.step p{color:var(--muted);line-height:1.55;font-size:14px}.footer{border-top:1px solid var(--line);padding:35px 5vw 55px;display:flex;justify-content:space-between;color:#82948b;font-size:13px}.footer b{color:#dfe9e2}.modal{position:fixed;inset:0;background:#000b;display:none;place-items:center;z-index:50;padding:20px}.modal.open{display:grid}.dialog{max-width:560px;width:100%;background:#10241f;border:1px solid #3b5b50;border-radius:24px;padding:30px;box-shadow:0 24px 70px #00000080}.dialog h3{font-size:32px;letter-spacing:-.05em;margin:0 0 10px}.dialog p{color:var(--muted);line-height:1.6}.close{float:right;border:0;background:none;color:#9eb0a7;font-size:25px;cursor:pointer}@media(max-width:850px){.phone{width:460px;height:260px}.phone-wrap{overflow:hidden}.navlinks{display:none}.hero{grid-template-columns:1fr;padding-top:65px}.phone-wrap{min-height:430px}.feature{grid-template-columns:1fr}.games{grid-template-columns:repeat(2,1fr)}.how{grid-template-columns:1fr}.section-head{display:block}.section-head p{margin-top:20px}}@media(max-width:520px){h1{font-size:58px}.phone{width:340px;height:210px;border-width:6px;border-radius:30px;padding:9px}.screen{border-radius:21px;padding:18px 12px 10px 28px}.screen h3{font-size:18px;margin:5px 0 8px}.tile{padding:7px 8px;min-height:62px;font-size:11px}.phone:before{left:6px;width:15px;height:58px}.float{font-size:10px;padding:9px 11px}.f1{right:-5px;top:40px}.f2{left:-5px;bottom:35px}.games{grid-template-columns:1fr}.phone{width:220px;height:440px}.footer{display:block}.footer span{display:block;margin-top:12px}}

/* -- Logo thêm vào (bản thiết kế gốc chưa có) -- */
.brand-mark{width:34px;height:34px;object-fit:contain;filter:drop-shadow(0 0 8px #3aa0ff55)}
.screen-shot{padding:0;background:#05091b;overflow:hidden}
.screen-shot img{display:block;width:100%;height:100%;object-fit:contain;border-radius:27px}
.challenge{position:relative}
.challenge-logo{position:absolute;top:22px;right:26px;width:150px;height:150px;object-fit:contain;filter:drop-shadow(0 12px 30px #0008)}
.challenge h3,.challenge p{max-width:calc(100% - 170px)}
.game-logo{display:block;width:92px;height:92px;object-fit:contain;margin:0 0 14px;filter:drop-shadow(0 8px 18px #0007)}
.game-logo-wrap{position:relative;display:inline-block}
.pro-tag{position:absolute;right:-8px;bottom:12px;background:var(--orange);color:#fff;font-size:11px;font-weight:900;letter-spacing:.08em;padding:3px 7px;border-radius:6px}
.games{grid-template-columns:repeat(5,1fr)}
.footer-brand{display:flex;align-items:center;gap:12px}
.footer-brand img{width:46px;height:auto}
@media(max-width:1200px){.games{grid-template-columns:repeat(3,1fr)}}
@media(max-width:850px){.games{grid-template-columns:repeat(2,1fr)}.challenge-logo{position:static;width:110px;height:110px;margin-bottom:14px}.challenge h3,.challenge p{max-width:none}}
@media(max-width:520px){.games{grid-template-columns:1fr}.footer-brand{margin-bottom:12px}}