@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Space+Grotesk:wght@500;600;700&display=swap');
:root{--bb-bg:#050914;--bb-panel:#0a1328;--bb-line:rgba(255,255,255,.09);--bb-text:#f7f8ff;--bb-muted:#9ba7c2;--bb-blue:#4f7cff;--bb-violet:#8157ff;--bb-cyan:#38d0ff}
body[data-app="build-book"]{background:radial-gradient(circle at 80% 5%,#112459 0,#071121 28%,#050914 58%);color:var(--bb-text);font-family:Inter,system-ui,sans-serif;overflow-x:hidden}body[data-app="build-book"] h1,body[data-app="build-book"] h2,body[data-app="build-book"] h3{font-family:"Space Grotesk",Inter,sans-serif;letter-spacing:-.035em}body[data-app="build-book"] .site-header{background:rgba(5,9,20,.88);backdrop-filter:blur(20px);border-bottom:1px solid var(--bb-line)}
.bb-hero{padding:76px 0 44px;position:relative}.bb-hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);background-size:58px 58px;mask-image:linear-gradient(to bottom,#000,transparent 82%);pointer-events:none}.bb-hero-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:52px;align-items:center;position:relative}.bb-badge{display:inline-flex;align-items:center;gap:9px;padding:8px 13px;border:1px solid rgba(92,125,255,.32);background:rgba(12,24,50,.72);border-radius:999px;color:#dce4ff;font-size:12px;font-weight:700}.bb-badge i{width:7px;height:7px;border-radius:50%;background:#38d0ff;box-shadow:0 0 12px #38d0ff}.bb-hero h1{font-size:clamp(50px,5.5vw,84px);line-height:.96;margin:20px 0 20px}.bb-gradient{background:linear-gradient(90deg,#5a8cff,#7964ff 46%,#bf54ff);-webkit-background-clip:text;background-clip:text;color:transparent}.bb-hero .lead{color:var(--bb-muted);font-size:17px;line-height:1.72;max-width:670px}.bb-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:27px}.bb-btn{display:inline-flex;align-items:center;gap:10px;padding:13px 18px;border-radius:12px;border:1px solid var(--bb-line);font-weight:800;font-size:14px;text-decoration:none;color:white;transition:.25s}.bb-btn.primary{background:linear-gradient(110deg,#315eff,#8151ff 58%,#c745ff);box-shadow:0 14px 38px rgba(79,86,255,.35)}.bb-btn.secondary{background:rgba(255,255,255,.045)}.bb-btn:hover{transform:translateY(-2px)}
.bb-visual{position:relative;min-height:470px;perspective:1100px}.bb-glow{position:absolute;inset:8%;border-radius:50%;background:radial-gradient(circle,rgba(85,86,255,.28),rgba(33,92,255,.1) 38%,transparent 70%);filter:blur(8px)}.bb-device{position:absolute;left:50%;top:50%;width:min(560px,92%);transform:translate(-50%,-50%) rotateY(-8deg) rotateX(4deg);border:1px solid rgba(255,255,255,.18);border-radius:26px;background:#0a1020;padding:10px;box-shadow:0 30px 80px rgba(0,0,0,.55),0 0 70px rgba(78,91,255,.24);transition:transform .35s ease}.bb-visual:hover .bb-device{transform:translate(-50%,-51%) rotateY(-3deg) rotateX(2deg)}.bb-device img{width:100%;display:block;border-radius:18px;aspect-ratio:1024/500;object-fit:cover}.bb-float{position:absolute;padding:9px 12px;border:1px solid rgba(255,255,255,.13);background:rgba(8,17,38,.86);backdrop-filter:blur(14px);border-radius:10px;font-size:10px;font-weight:800;letter-spacing:.11em;color:#cdd7f2;box-shadow:0 14px 30px rgba(0,0,0,.3)}.bb-float.f1{left:2%;top:17%}.bb-float.f2{right:0;top:28%}.bb-float.f3{left:8%;bottom:13%}.bb-float.f4{right:6%;bottom:8%}.bb-ring{position:absolute;border:1px solid rgba(108,85,255,.33);border-radius:50%;left:50%;top:50%;transform:translate(-50%,-50%) rotateX(66deg);width:650px;height:220px;max-width:105%}
.bb-strip{display:grid;grid-template-columns:repeat(5,1fr);border:1px solid var(--bb-line);background:rgba(8,17,39,.75);border-radius:18px;overflow:hidden;margin:14px 0 52px}.bb-strip span{padding:17px 10px;text-align:center;font-size:12px;font-weight:700;color:#9aa5bd;border-right:1px solid rgba(255,255,255,.06)}.bb-strip span:last-child{border:0}
.bb-section{padding:58px 0}.bb-kicker{text-transform:uppercase;letter-spacing:.16em;font-size:11px;font-weight:800;color:#8167ff}.bb-section h2{font-size:clamp(32px,3.6vw,50px);margin:8px 0 24px}.bb-intro{max-width:760px;color:var(--bb-muted);line-height:1.7}.bb-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.bb-card{border:1px solid var(--bb-line);border-radius:18px;padding:22px;background:linear-gradient(145deg,rgba(12,21,48,.92),rgba(7,15,33,.9));min-height:185px;position:relative;overflow:hidden;transition:.3s}.bb-card::after{content:"";position:absolute;width:130px;height:130px;right:-70px;bottom:-70px;border-radius:50%;background:radial-gradient(circle,rgba(98,78,255,.22),transparent 68%)}.bb-card:hover{transform:translateY(-6px);border-color:rgba(110,91,255,.38);box-shadow:0 22px 50px rgba(0,0,0,.3)}.bb-icon{width:42px;height:42px;display:grid;place-items:center;border-radius:11px;background:rgba(81,89,255,.11);border:1px solid rgba(97,95,255,.25);color:#75a4ff;font-size:18px}.bb-card h3{font-size:18px;margin:17px 0 8px}.bb-card p{font-size:13px;line-height:1.6;color:#96a1bb;margin:0}.bb-pro{border:1px solid rgba(125,84,255,.25);border-radius:24px;padding:34px;background:radial-gradient(circle at 80% 30%,rgba(129,72,255,.26),transparent 34%),linear-gradient(130deg,#0d1731,#0a1127);display:grid;grid-template-columns:1fr .9fr;gap:30px;align-items:center}.bb-pro h3{font-size:34px;margin:7px 0 12px}.bb-pro p{color:#9ba6bf;line-height:1.7}.bb-pro-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.bb-pro-item{border:1px solid rgba(255,255,255,.08);border-radius:14px;padding:14px;background:rgba(255,255,255,.035);font-size:13px;color:#c6cee2}.bb-note{font-size:12px;color:#77839f;margin-top:14px}.bb-cta{margin-top:28px;padding:30px;border-radius:22px;border:1px solid var(--bb-line);display:flex;align-items:center;justify-content:space-between;gap:20px;background:linear-gradient(130deg,#0b1530,#0d1737)}
@media(max-width:950px){.bb-hero-grid{grid-template-columns:1fr;gap:16px}.bb-hero{text-align:center;padding-top:52px}.bb-hero .lead{margin:auto}.bb-actions{justify-content:center}.bb-visual{min-height:390px}.bb-grid{grid-template-columns:repeat(2,1fr)}.bb-pro{grid-template-columns:1fr}.bb-strip{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){.bb-hero h1{font-size:44px}.bb-visual{min-height:300px}.bb-device{width:96%;transform:translate(-50%,-50%)}.bb-visual:hover .bb-device{transform:translate(-50%,-50%)}.bb-float{font-size:8px;padding:7px 9px}.bb-ring{width:390px}.bb-grid{grid-template-columns:1fr}.bb-strip{grid-template-columns:1fr 1fr}.bb-section{padding:42px 0}.bb-pro{padding:24px}.bb-pro-list{grid-template-columns:1fr}.bb-cta{flex-direction:column;align-items:flex-start}}