:root{--rf-bg:#0f0f0f;--rf-surface:#1a1a1a;--rf-surface-2:#202020;--rf-border:#2a2a2a;--rf-border-strong:#404040;--rf-primary:#4b68ff;--rf-primary-light:#7b8eff;--rf-primary-dark:#3451cc;--rf-success:#10b981;--rf-text:#fafafa;--rf-text-2:#d4d4d4;--rf-text-3:#a3a3a3;--rf-radius:16px;--rf-radius-sm:10px;--rf-maxw:1080px}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{background-color:var(--rf-bg);color:var(--rf-text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif,Apple Color Emoji,Segoe UI Emoji;line-height:1.6;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}a{color:var(--rf-primary-light);text-decoration:none}a:hover{text-decoration:underline}.container{width:100%;max-width:var(--rf-maxw);margin:0 auto;padding:0 24px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;font-size:15px;border-radius:var(--rf-radius-sm);padding:12px 22px;border:1px solid transparent;cursor:pointer;transition:transform .12s ease,background-color .12s ease,border-color .12s ease}.btn:hover{text-decoration:none;transform:translateY(-1px)}.btn-primary{background:linear-gradient(135deg,var(--rf-primary),var(--rf-primary-dark));color:#fff}.btn-ghost{background:var(--rf-surface);color:var(--rf-text);border-color:var(--rf-border-strong)}