/* Skin: DuDuanHot – nền than, lửa cam – đỏ */
:root{--bg:#120c0a;--panel:#1c1411;--panel2:#251a15;--line:#3a2a22;--text:#fff3ea;--muted:#b89e8f;--lime:#ff7a1a;--ink:#1a0d05;--amber:#ffd23f;--acc-rgb:255,122,26;--acc2:#e8174a;--bg-rgb:18,12,10;--line-rgb:58,42,34;--p2-rgb:37,26,21;--hi-rgb:255,255,255;--body:#e3cfc2;--cta1:#5a1a12;--cta2:#2a0e0a;--cta-line:#7a2a1a;--cta-text:#f3d2c2;--font-h:'Oswald';--font-num:'Oswald';--ai1:#ffb020;--ai2:#ff3d5a;--ai-rgb:255,110,40;--pd:#6f5a50;--pa:#7aa2ff;--r:10px}
body{background:var(--bg) radial-gradient(900px 500px at 50% -20%,rgba(255,90,30,.22),transparent 62%) no-repeat}
.top{border-bottom:2px solid transparent;border-image:linear-gradient(90deg,#ffd23f,#ff7a1a,#e8174a) 1}
h1,h2,h3,.sec-h h2,.box h3{font-family:var(--font-h),var(--font),sans-serif;font-weight:600;letter-spacing:.2px}
.mh1{font-family:var(--font-h),var(--font),sans-serif;font-weight:600;letter-spacing:.2px;line-height:1.25}
.hero h1{text-transform:uppercase;font-weight:700;font-size:clamp(32px,4.8vw,52px);line-height:1.16}
.sec-h h2{text-transform:uppercase}
.sec-h h2 small{text-transform:none;font-family:var(--font),sans-serif}
h1 em{font-style:normal;background:linear-gradient(90deg,#ffd23f,#ff7a1a 45%,#ff3d5a);-webkit-background-clip:text;background-clip:text;color:transparent}
.btn-lime{background:linear-gradient(120deg,#ffb020,#ff5a1f 55%,#e8174a);color:#fff}
.btn-reg{box-shadow:0 6px 22px rgba(255,90,30,.4)}
.btn{text-transform:uppercase;letter-spacing:.4px}
.eyebrow{text-transform:uppercase;letter-spacing:1px;font-size:12px}
.feat,.board{border-color:rgba(255,122,26,.35);box-shadow:0 20px 60px rgba(0,0,0,.4)}
.tag{background:linear-gradient(120deg,#ff7a1a,#e8174a);color:#fff}
.chip.on,.chip:hover{background:#ff7a1a;border-color:#ff7a1a;color:#1a0d05}
.lg-h{background:linear-gradient(90deg,rgba(255,122,26,.16),var(--panel2))}
.art h2,.entry h2{border-left-color:#ff7a1a}
.logo .mark{width:44px;height:48px;filter:drop-shadow(0 0 14px rgba(255,100,30,.5))}
.aip-badge{color:#fff}.aip-badge .aisp{color:#fff}
.aip-pk.is-top::before{color:#fff}
.ai-ring .rv b,.aip-score .sc,.aic-s b{font-family:'Oswald'}