:root{--bg:#070b16;--panel:#0e1526;--panel2:#111b30;--text:#eef3ff;--muted:#9aa7c2;--line:#24304a;--accent:#6ea8fe;--accent2:#8b5cf6}
*{box-sizing:border-box}
body{margin:0;background:radial-gradient(circle at 20% 0,#15244a 0,transparent 35%),var(--bg);color:var(--text);font:15px/1.65 system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}
a{color:#a9c7ff}.wrap{max-width:1100px;margin:auto;padding:0 20px}
.nav{height:68px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}
.brand{font-size:21px;font-weight:800;text-decoration:none;color:var(--text)}.brand span{color:var(--accent)}
.navlinks{display:flex;gap:18px;color:var(--muted);font-size:14px}.navlinks a{text-decoration:none;color:inherit}
.hero{padding:54px 0 30px}.eyebrow{color:#9db9f4;font-weight:700;font-size:13px;text-transform:uppercase;letter-spacing:.08em}
h1{font-size:clamp(32px,5vw,54px);line-height:1.05;letter-spacing:-1.5px;margin:8px 0 16px}
.hero p{max-width:820px;color:var(--muted);font-size:18px;margin:0}
.toolbox{margin:22px 0 46px;background:var(--panel);border:1px solid var(--line);border-radius:18px;overflow:hidden}
.toolbox iframe{display:block;width:100%;height:780px;border:0;background:#070b16}
.open-tool{padding:13px 16px;border-top:1px solid var(--line);text-align:center;background:#0a1120}
.open-tool a{font-weight:700;text-decoration:none}
.content{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:24px;padding-bottom:70px}
.card{background:linear-gradient(180deg,var(--panel2),var(--panel));border:1px solid var(--line);border-radius:15px;padding:22px;margin-bottom:18px}
.card h2{margin:0 0 12px;font-size:24px}.card h3{font-size:18px;margin:20px 0 7px}
.card p{margin:8px 0;color:#dce4f6}.card li{margin:7px 0}
.example{display:grid;grid-template-columns:1fr 1fr;gap:12px}.code{background:#080d18;border:1px solid var(--line);border-radius:10px;padding:14px;overflow:auto;white-space:pre-wrap;word-break:break-word;font:13px/1.5 ui-monospace,SFMono-Regular,Menlo,monospace;color:#dbe7ff}
.sidebar h2{font-size:18px}.related a{display:block;padding:8px 0;text-decoration:none;border-bottom:1px solid var(--line)}
.faq details{border-top:1px solid var(--line);padding:12px 0}.faq details:first-child{border-top:0}.faq summary{cursor:pointer;font-weight:700}
.footer{border-top:1px solid var(--line);padding:28px 0 50px;color:var(--muted);font-size:13px}
@media(max-width:820px){.content{grid-template-columns:1fr}.toolbox iframe{height:850px}.example{grid-template-columns:1fr}.navlinks{gap:10px}.hero{padding-top:38px}}