:root{--bg: #ffffff;--text: #0f1724;--muted: #6b7280;--accent: #2b8ef7;--card: #f8fafc;--radius: 12px;--gap: 1.25rem;--maxw: 1200px;--header-h: 72px;--footer-h: 50px}*{box-sizing:border-box}html,body{height:100%}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.45}section{margin-top:2rem}ul{list-style:none;padding:0}p{margin:0}h3{margin:0 0 .5rem}a{color:inherit;text-decoration:none}img{max-width:100%;height:auto;max-height:300px;display:block}.container{width:100%;max-width:var(--maxw);margin:1.25rem auto;padding:1rem}.section-title{font-size:1.3rem;font-weight:800;margin-bottom:.8rem}.center{text-align:center}.visually-hidden{position:absolute!important;height:1px;width:1px;overflow:hidden;clip:rect(1px,1px,1px,1px);white-space:nowrap}.error{color:red;font-size:.9rem}.cta-row{display:flex;gap:.75rem;align-items:center;flex-wrap:wrap;margin-top:.6rem}.btn-primary{display:inline-flex;align-items:center;gap:.6rem;background:var(--accent);color:#fff;border:none;padding:12px 18px;border-radius:10px;font-weight:700;box-shadow:0 6px 18px #2b8ef724;transition:transform .14s ease,box-shadow .14s ease;cursor:pointer}.btn-primary:hover{transform:scale(1.05);box-shadow:0 10px 26px #2b8ef72e}.btn-secondary{padding:10px 14px;border-radius:10px;background:transparent;border:1px solid #e6eefb;color:var(--accent);font-weight:700}.btn-secondary:hover{transform:scale(1.05)}.btn-ghost{padding:8px 12px;border-radius:10px;border:1px solid transparent;font-weight:600}.btn-ghost:hover{transform:scale(1.05)}.payment-section,.contact-section,.roadmap-section{padding:1.25rem;border-radius:12px;background:#fff;border:1px solid #f3f7fb}.form-input{margin-bottom:.1rem;width:100%;border-radius:.5rem;border:1px solid #ccc;min-height:2rem;padding:10px}.section-helper{margin:0 0 1rem;color:var(--muted)}