:root{--indigo:#4f46e5;--cyan:#06b6d4;--ink:#0f172a;--slate:#334155;--muted:#64748b;--line:#e2e8f0;--bg2:#f8fafc;
  --grad:linear-gradient(135deg,#4f46e5,#06b6d4);--grad-anim:linear-gradient(90deg,#4f46e5,#06b6d4,#4f46e5);--shadow:0 10px 30px rgba(2,6,23,.08)}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:Inter,system-ui,Segoe UI,Roboto,sans-serif;color:var(--ink);background:#fff;line-height:1.75;-webkit-font-smoothing:antialiased}
h1,h2,h3,.brand{font-family:Poppins,Inter,sans-serif;line-height:1.2}
a{color:var(--indigo);text-decoration:none} a:hover{text-decoration:underline}
@keyframes gradShift{to{background-position:200% center}}
header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.9);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px;max-width:980px;margin:0 auto;padding:0 22px}
.brand{font-size:1.3rem;font-weight:800;display:flex;align-items:center;gap:.5rem;color:var(--ink)}
.brand .dot{width:30px;height:30px;border-radius:9px;background:var(--grad-anim);background-size:200% auto;display:flex;align-items:center;justify-content:center;color:#fff;animation:gradShift 4s linear infinite}
.nav .links{display:flex;gap:20px;align-items:center}
.nav .links a{color:var(--slate);font-weight:500;font-size:.94rem}
article{max-width:760px;margin:0 auto;padding:40px 22px 60px}
.crumbs{font-size:.85rem;color:var(--muted);margin-bottom:18px}
.tag{display:inline-block;background:#eef2ff;color:var(--indigo);font-weight:600;font-size:.78rem;padding:.35rem .7rem;border-radius:999px;border:1px solid #e0e7ff;margin-bottom:16px}
article h1{font-size:clamp(1.9rem,4.2vw,2.7rem);font-weight:800;letter-spacing:-.02em;margin-bottom:16px}
.byline{display:flex;align-items:center;gap:12px;color:var(--muted);font-size:.92rem;margin-bottom:8px;padding-bottom:24px;border-bottom:1px solid var(--line)}
.byline .av{width:40px;height:40px;border-radius:50%;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700}
article h2{font-size:1.45rem;font-weight:800;margin:34px 0 12px}
article p{margin-bottom:18px;color:#1f2937}
article ul{margin:0 0 18px 1.1rem;color:#1f2937}
article li{margin-bottom:8px}
blockquote{border-left:4px solid var(--indigo);background:var(--bg2);padding:14px 20px;border-radius:0 10px 10px 0;margin:22px 0;font-style:italic;color:#334155}
.authorbox{margin-top:40px;background:var(--bg2);border:1px solid var(--line);border-radius:16px;padding:24px;display:flex;gap:16px;align-items:flex-start}
.authorbox .av{width:56px;height:56px;border-radius:14px;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:1.3rem;flex:0 0 auto}
.authorbox b{display:block;font-size:1.05rem}
.authorbox p{font-size:.92rem;color:var(--slate);margin:4px 0 0}
footer{background:var(--ink);color:#cbd5e1;padding:34px 0;text-align:center;font-size:.9rem;margin-top:20px}
footer a{color:#cbd5e1}
@media(max-width:600px){.nav .links a{display:none}}
@media (prefers-reduced-motion:reduce){.brand .dot{animation:none}}