/* Skin: SoiKeoBest – xanh điện, phong cách phòng thí nghiệm AI */
:root{--bg:#070b1a;--panel:#0e1530;--panel2:#131d3f;--line:#1f2c57;--text:#eaf1ff;--muted:#8d9bbd;--lime:#33c9ff;--ink:#041022;--amber:#ffc04d;--acc-rgb:51,201,255;--acc2:#4f7bff;--bg-rgb:7,11,26;--line-rgb:31,44,87;--p2-rgb:19,29,63;--hi-rgb:255,255,255;--body:#c3cde6;--cta1:#13306e;--cta2:#0b1838;--cta-line:#24479a;--cta-text:#bcd0f5;--font-h:'Chakra Petch';--font-num:'Chakra Petch';--ai1:#3fe0ff;--ai2:#5b7cff;--ai-rgb:63,170,255;--pd:#56648a;--pa:#a879ff;--r:12px}
body{background:radial-gradient(1000px 480px at 80% -15%,rgba(79,123,255,.20),transparent 60%) no-repeat,radial-gradient(700px 380px at 0 10%,rgba(51,201,255,.10),transparent 60%) no-repeat,var(--bg)}
body::before{content:"";position:fixed;inset:0;pointer-events:none;z-index:-1;background:linear-gradient(rgba(91,124,255,.05) 1px,transparent 1px) 0 0/40px 40px,linear-gradient(90deg,rgba(91,124,255,.05) 1px,transparent 1px) 0 0/40px 40px;mask-image:linear-gradient(180deg,#000,transparent 70%);-webkit-mask-image:linear-gradient(180deg,#000,transparent 70%)}
.top{border-bottom:1px solid rgba(63,170,255,.18)}
.top::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;background:linear-gradient(90deg,transparent,#3fe0ff,#5b7cff,transparent)}
h1,h2,h3,.mh1,.sec-h h2,.box h3{font-family:var(--font-h),var(--font),sans-serif;letter-spacing:-.2px}
.hero h1{font-weight:700;font-size:clamp(32px,5vw,50px);line-height:1.08}
h1 em{font-style:normal;background:linear-gradient(90deg,#3fe0ff,#5b7cff);-webkit-background-clip:text;background-clip:text;color:transparent}
.btn-lime{background:linear-gradient(120deg,#3fe0ff,#5b7cff);color:#041022}
.btn-reg{box-shadow:0 0 0 1px rgba(63,224,255,.5),0 6px 22px rgba(63,170,255,.35)}
.eyebrow{font-family:var(--font-h);text-transform:uppercase;letter-spacing:1px;font-size:12px}
.feat,.board,.aip{clip-path:polygon(0 0,calc(100% - 18px) 0,100% 18px,100% 100%,18px 100%,0 calc(100% - 18px))}
.feat{border-color:rgba(63,170,255,.35)}
.tag{background:rgba(63,224,255,.12);color:#3fe0ff}
.chip.on,.chip:hover{background:linear-gradient(120deg,#3fe0ff,#5b7cff);border-color:transparent;color:#041022}
.lg-h{background:linear-gradient(90deg,rgba(63,170,255,.14),var(--panel2))}
.art h2,.entry h2{border-left-color:#3fe0ff}
.logo .mark{width:46px;height:46px;filter:drop-shadow(0 0 14px rgba(63,170,255,.45))}
.aic{clip-path:polygon(0 0,calc(100% - 12px) 0,100% 12px,100% 100%,0 100%)}
.ai-ring .rv b,.aip-score .sc,.aic-s b{font-family:'Chakra Petch'}