body{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px 24px}.nav-logo{position:fixed;top:24px;left:40px;display:flex;align-items:center;gap:8px;font-size:17px;font-weight:600;letter-spacing:-.3px;color:var(--text)}.nav-logo img{width:24px;height:24px}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:16px;padding:40px;max-width:420px;width:100%;text-align:center}h1{font-family:AnthropicSerif,serif;font-size:28px;font-weight:400;letter-spacing:-.5px;margin-bottom:8px}.subtitle{font-size:15px;color:var(--text-secondary);margin-bottom:24px;line-height:1.5}.price{font-size:48px;font-weight:700;letter-spacing:-2px;color:var(--text);margin-bottom:4px;display:flex;align-items:baseline;justify-content:center;gap:4px}.price span{font-size:18px;font-weight:400;letter-spacing:0;color:var(--text-secondary)}.price-note{font-size:13px;color:var(--text-secondary);margin-bottom:28px}.features{list-style:none;text-align:left;margin-bottom:32px;display:flex;flex-direction:column;gap:10px}.features li{font-size:14px;color:var(--text-secondary);display:flex;align-items:center;gap:10px}.features li:before{content:"";width:16px;height:16px;border-radius:50%;background:#c6613f1f;background-image:url("data:image/svg+xml,%3Csvg width='10' height='8' viewBox='0 0 10 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 4L3.5 6.5L9 1' stroke='%23c6613f' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:center;flex-shrink:0}.email-input{width:100%;padding:10px 14px;border:1px solid var(--border);border-radius:8px;font-family:inherit;font-size:14px;background:var(--bg);color:var(--text);margin-bottom:12px;outline:none;transition:border-color .15s}.email-input:focus{border-color:var(--accent)}.btn-upgrade{width:100%;padding:13px;background:var(--accent);color:#fff;border:none;border-radius:8px;font-family:inherit;font-size:15px;font-weight:600;cursor:pointer;transition:background .15s}.btn-upgrade:hover:not(:disabled){background:var(--accent-dark)}.btn-upgrade:disabled{opacity:.6;cursor:not-allowed}.error-msg{font-size:13px;color:#c0392b;margin-top:10px}.back{margin-top:20px;font-size:13px;color:var(--text-secondary)}.back a{color:var(--accent)}