:root{--ai28-bg:#070814;--ai28-card:#10172f;--ai28-line:rgba(255,255,255,.13);--ai28-text:#f8fbff;--ai28-muted:#b8c4df;--ai28-a:#8b5cf6;--ai28-b:#06b6d4;--ai28-c:#22c55e;--ai28-gold:#f59e0b}.stage28-hero{position:relative;overflow:hidden;display:grid;grid-template-columns:1.4fr .7fr;gap:22px;align-items:center;padding:30px;border:1px solid var(--ai28-line);border-radius:28px;background:radial-gradient(circle at top right,rgba(139,92,246,.35),transparent 34%),linear-gradient(145deg,#0d1230,#071022 72%);box-shadow:0 25px 80px rgba(0,0,0,.38);color:var(--ai28-text);margin-bottom:20px}.stage28-kicker{display:inline-flex;padding:8px 12px;border-radius:999px;background:rgba(139,92,246,.15);border:1px solid rgba(139,92,246,.35);font-weight:900;color:#eee7ff}.stage28-hero h2{font-size:clamp(30px,5vw,58px);line-height:1;margin:14px 0}.stage28-hero p{max-width:760px;color:var(--ai28-muted);font-size:16px}.stage28-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}.stage28-btn{display:inline-flex;align-items:center;gap:8px;text-decoration:none;border:0;border-radius:14px;padding:12px 16px;background:linear-gradient(135deg,var(--ai28-a),var(--ai28-b));color:white;font-weight:950;cursor:pointer}.stage28-btn.alt{background:rgba(255,255,255,.1);border:1px solid var(--ai28-line)}.stage28-brain{min-height:270px;border-radius:28px;border:1px solid rgba(255,255,255,.14);background:radial-gradient(circle,rgba(6,182,212,.32),rgba(139,92,246,.14) 45%,rgba(255,255,255,.05));display:grid;place-items:center;text-align:center}.stage28-brain div{width:145px;height:145px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,#8b5cf6,#06b6d4);font-size:42px;font-weight:1000;box-shadow:0 0 60px rgba(139,92,246,.5)}.stage28-brain span{display:block;color:#e9f2ff;font-weight:900;margin-top:-38px}.stage28-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin:18px 0}.stage28-card{border:1px solid var(--ai28-line);border-radius:22px;background:linear-gradient(145deg,rgba(16,23,47,.96),rgba(139,92,246,.1));padding:18px;color:var(--ai28-text);box-shadow:0 16px 45px rgba(0,0,0,.2)}.stage28-card h3{margin:8px 0}.stage28-card p{color:var(--ai28-muted)}.stage28-icon{width:46px;height:46px;border-radius:16px;background:rgba(139,92,246,.18);display:grid;place-items:center;font-size:24px}.stage28-metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:16px 0}.stage28-metrics div{border:1px solid var(--ai28-line);border-radius:20px;background:rgba(16,23,47,.92);padding:18px;color:white}.stage28-metrics b{font-size:28px;display:block}.stage28-metrics span{color:var(--ai28-muted)}.stage28-form{display:grid;gap:12px}.stage28-form textarea,.stage28-form input,.stage28-form select{width:100%;border-radius:14px;border:1px solid rgba(255,255,255,.13);background:#081026;color:white;padding:12px}.stage28-output{white-space:pre-wrap;border:1px solid rgba(6,182,212,.3);border-radius:18px;background:rgba(6,182,212,.08);padding:16px;color:#e9fbff}.stage28-pill{display:inline-flex;padding:6px 10px;border-radius:999px;background:rgba(34,197,94,.12);color:#bbf7d0;border:1px solid rgba(34,197,94,.25);font-weight:900}.stage28-row{display:flex;justify-content:space-between;gap:12px;align-items:center;padding:13px;border-radius:16px;background:rgba(255,255,255,.07);border:1px solid var(--ai28-line);color:white}.stage28-row small{display:block;color:var(--ai28-muted)}@media(max-width:900px){.stage28-hero{grid-template-columns:1fr}.stage28-grid,.stage28-metrics{grid-template-columns:1fr}.stage28-brain{min-height:210px}}