:root{--bg:#0b1020;--card:#121936;--muted:#97a2b3;--text:#e8ecf3;--brand:#16a34a;--brand-2:#22c55e;--link:#60a5fa;--maxw:1120px;--radius:18px;--shadow:0 10px 30px rgba(0,0,0,.25)}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font:16px/1.6 system-ui,Segoe UI,Inter,Arial,sans-serif}a{color:var(--link);text-decoration:none}a:hover{text-decoration:underline}.container{max-width:var(--maxw);margin:0 auto;padding:20px}.header{position:sticky;top:0;z-index:50;background:rgba(11,16,32,.75);backdrop-filter:saturate(140%) blur(12px);border-bottom:1px solid rgba(255,255,255,.08)}.header .inner{display:flex;gap:16px;align-items:center;justify-content:space-between;padding:14px 20px;max-width:var(--maxw);margin:0 auto;flex-wrap:wrap}.brand{display:flex;gap:10px;align-items:center}.brand .logo{width:28px;height:28px}.brand .title{font-weight:800;letter-spacing:.3px}.nav{display:flex;gap:10px;flex-wrap:nowrap;overflow-x:auto;white-space:nowrap;scrollbar-width:none;-ms-overflow-style:none}.nav::-webkit-scrollbar{display:none}.nav a{padding:6px 10px;border-radius:999px;background:#0f1630;border:1px solid rgba(255,255,255,.08);font-size:14px}.hero{padding:32px 0 10px}h1{font-size:clamp(28px,3.4vw,42px);line-height:1.15;margin:0 0 10px}.lead{font-size:clamp(16px,2vw,18px);color:var(--muted);margin:0 0 16px}.meta{color:var(--muted);font-size:14px}.card{background:var(--card);border:1px solid rgba(255,255,255,.06);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);margin:16px 0}.toc{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0 0}.toc a{font-size:14px;padding:6px 10px;border:1px dashed rgba(255,255,255,.15);border-radius:999px}.cta{display:block;width:100%;text-align:center;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:white;font-weight:800;padding:14px 18px;border:none;border-radius:12px;box-shadow:0 8px 24px rgba(22,163,74,.3);margin:14px 0 4px}.footer{color:var(--muted);padding:26px 0 40px}.small{font-size:13px;color:var(--muted)}