/* AIDuDuan – navy, cyan → indigo */
:root{--bg:#070d1f;--panel:#0d1630;--panel2:#13203f;--line:#20305a;--text:#e9f0ff;--muted:#8b9bc0;--lime:#22d3ee;--ink:#04121c;--amber:#fbbf24;--acc-rgb:34,211,238;--acc2:#6366f1;--bg-rgb:7,13,31;--line-rgb:32,48,90;--p2-rgb:19,32,63;--hi-rgb:255,255,255;--body:#c4cfe8;--cta1:#1b2f6b;--cta2:#0c1636;--cta-line:#2c4597;--cta-text:#c3d2f5;--font-h:'Plus Jakarta Sans';--ai1:#22d3ee;--ai2:#818cf8;--ai-rgb:56,160,248;--pd:#55648c;--pa:#f472b6;--r:14px}
body{background:radial-gradient(900px 460px at 85% -15%,rgba(99,102,241,.25),transparent 60%) no-repeat,radial-gradient(700px 400px at 0 0,rgba(34,211,238,.12),transparent 60%) no-repeat,var(--bg)}
h1,h2,h3,.mh1,.sec-h h2,.box h3{font-family:var(--font-h),var(--font),sans-serif;font-weight:800;letter-spacing:-.6px}
.hero h1{font-size:clamp(32px,5vw,52px);line-height:1.08}
h1 em{font-style:normal;background:linear-gradient(90deg,#22d3ee,#818cf8);-webkit-background-clip:text;background-clip:text;color:transparent}
.btn-lime{background:linear-gradient(120deg,#22d3ee,#6366f1);color:#fff}
.btn-reg{box-shadow:0 6px 24px rgba(99,102,241,.4)}
.top::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;background:linear-gradient(90deg,transparent,#22d3ee,#818cf8,transparent)}
.tag{background:rgba(34,211,238,.12);color:#22d3ee}
.chip.on,.chip:hover{background:linear-gradient(120deg,#22d3ee,#6366f1);border-color:transparent;color:#fff}
.rt.on,.aip-badge,.aip-badge .aisp,.aip-pk.is-top::before{color:#fff}
.lg-h{background:linear-gradient(90deg,rgba(34,211,238,.12),var(--panel2))}
.art h2,.entry h2{border-left-color:#22d3ee}
.logo .mark{width:46px;height:46px;filter:drop-shadow(0 0 14px rgba(56,160,248,.45))}