:root{--navy:#07172e;--navy2:#0d2948;--blue:#1477ee;--blue2:#49a4ff;--green:#2cd568;--bg:#f5f8fc;--surface:#fff;--text:#13263e;--muted:#6d7f95;--line:#e2e9f1;--shadow:0 20px 55px rgba(8,30,58,.10);--radius:20px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#fff;color:var(--text);font:15px/1.65 Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif}a{text-decoration:none;color:inherit}button{font:inherit}.wrap{width:min(1180px,calc(100% - 40px));margin:auto}.topbar{position:sticky;top:0;z-index:50;background:rgba(7,23,46,.96);backdrop-filter:blur(14px);border-bottom:1px solid rgba(255,255,255,.08);transition:.2s}.topbar.scrolled{box-shadow:0 10px 30px rgba(0,0,0,.16)}.topbar-inner{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:22px}.brand{display:flex;align-items:center;gap:11px;color:#fff}.brand-mark{width:40px;height:40px;flex:0 0 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p{font-size:11px;color:var(--muted);margin:0}.demo-callout{padding-top:0}.demo-box{background:linear-gradient(135deg,var(--blue),#075bb9);border-radius:24px;padding:38px 42px;color:#fff;display:flex;justify-content:space-between;align-items:center;gap:30px}.demo-box h2{font-size:33px;line-height:1.15;margin:0 0 10px}.demo-box p{max-width:760px;color:#dcecff;margin:0}.pricing-warning{max-width:930px;margin:0 auto 20px;padding:13px 16px;border-radius:12px;background:#fff4dc;border:1px solid #f3d58e;color:#75551a}.price-sub{color:var(--muted);margin:0}.price{font-size:44px;font-weight:900;line-height:1;margin:18px 0 7px;letter-spacing:-.05em}.old-price{margin-top:15px;color:#8c9aab;text-decoration:line-through}.price-meta{font-size:11px;color:var(--muted)}.recommend{position:absolute;right:20px;top:20px;font-size:8px;font-weight:900;letter-spacing:.7px;color:#2673c8;background:#eaf4ff;border-radius:999px;padding:5px 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