:root{--accent:#2563eb;--accent-dark:#1d4ed8;--text:#0f172a;--muted:#475569;--bg:#fff;--bg-soft:#f8fafc;--border:#e2e8f0;--radius:14px}*{box-sizing:border-box}html,body{margin:0;padding:0}body{color:var(--text);background:var(--bg);font-family:ui-sans-system,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;line-height:1.6}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.accent{color:var(--accent)}.container{max-width:1080px;margin:0 auto;padding:0 20px}.site-header{border-bottom:1px solid var(--border);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);z-index:10;background:#ffffffeb;position:sticky;top:0}.header-inner{align-items:center;gap:24px;min-height:64px;display:flex}.logo{color:var(--text);font-size:1.25rem;font-weight:800}.logo:hover{text-decoration:none}.nav{gap:18px;margin-left:auto;display:flex}.nav a{color:var(--muted);font-weight:600}.header-inner .btn-primary{margin-left:8px}@media (max-width:640px){.nav{display:none}.header-inner .btn-primary{margin-left:auto}}.btn-primary{cursor:pointer;background:var(--accent);color:#fff;border:0;border-radius:999px;padding:14px 26px;font-size:1rem;font-weight:700;transition:background .15s,transform 50ms;display:inline-block}.btn-primary:hover{background:var(--accent-dark);text-decoration:none}.btn-primary:active{transform:translateY(1px)}.btn-primary:disabled{opacity:.6;cursor:wait}.btn-small{padding:9px 18px;font-size:.92rem}.btn-secondary{cursor:pointer;color:var(--text);border:1px solid var(--border);background:#fff;border-radius:999px;padding:13px 22px;font-size:1rem;font-weight:600;display:inline-block}.btn-secondary:hover{border-color:var(--accent);color:var(--accent);text-decoration:none}.hero{text-align:center;padding:76px 20px 56px}.hero h1{letter-spacing:-.02em;margin:0 0 18px;font-size:clamp(2rem,5vw,3.2rem);line-height:1.12}.hero-sub{color:var(--muted);max-width:720px;margin:0 auto 28px;font-size:1.2rem}.hero-note{color:var(--muted);margin-top:14px;font-size:.95rem}.section{padding:44px 20px}.section h2{letter-spacing:-.01em;margin:0 0 22px;font-size:1.8rem}.grid{grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px;display:grid}.card{background:var(--bg-soft);border:1px solid var(--border);border-radius:var(--radius);padding:20px}.card h3{margin:0 0 8px;font-size:1.05rem}.card p{color:var(--muted);margin:0}.steps{grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px;margin:0;padding:0;list-style:none;display:grid}.steps li{border:1px solid var(--border);border-radius:var(--radius);background:#fff;flex-direction:column;gap:6px;padding:20px;display:flex}.steps span{color:var(--muted)}.cta-row{text-align:center;margin-top:28px}.faqs{gap:10px;display:grid}.faq{border:1px solid var(--border);border-radius:var(--radius);background:#fff;padding:14px 18px}.faq summary{cursor:pointer;font-weight:700}.faq p{color:var(--muted);margin:10px 0 4px}.site-footer{border-top:1px solid var(--border);background:var(--bg-soft);margin-top:32px;padding:28px 0 40px}.footer-inner{flex-direction:column;align-items:flex-start;gap:6px;display:flex}.footer-nav{gap:18px;margin-top:8px;display:flex}.disclaimer{color:var(--muted);font-size:.92rem}.legal{max-width:820px;padding-top:36px;padding-bottom:56px}.legal h1{font-size:2rem}.legal h2{margin-top:28px;font-size:1.25rem}.legal p{color:#334155}.board-shell{background:#fff;flex-direction:column;height:100dvh;display:flex}.board-topbar{border-bottom:1px solid var(--border);z-index:20;background:#fff;flex:0 0 52px;align-items:center;gap:14px;height:52px;padding:0 12px;display:flex}.board-brand{color:var(--text);white-space:nowrap;font-size:1.05rem;font-weight:800}.board-brand:hover{text-decoration:none}.board-id{color:var(--muted);text-overflow:ellipsis;white-space:nowrap;font-size:.85rem;overflow:hidden}.board-actions{gap:8px;margin-left:auto;display:flex}.board-actions .btn-secondary,.board-actions .btn-primary{white-space:nowrap}@media (max-width:560px){.board-id{display:none}}.board-notice{color:#1e3a8a;text-align:center;background:#eff6ff;border-bottom:1px solid #bfdbfe;padding:8px 14px;font-size:.92rem}.board-canvas{flex:auto;min-height:0;position:relative}.board-canvas>div{position:absolute;inset:0}.board-disclaimer{color:var(--muted);border-top:1px solid var(--border);text-align:center;background:#fff;flex:none;margin:0;padding:6px 12px;font-size:.78rem}