:root{--accent: #009B3B;--bg: #f7f7f6;--surface: #ffffff;--text: #111111;--text-muted: #5a5a5a;--border: #dedede;--radius: 8px;font-family:-apple-system,BlinkMacSystemFont,Helvetica Neue,Helvetica,Arial,sans-serif;color-scheme:light}*{box-sizing:border-box}html,body,#root{margin:0;padding:0;height:100%}body{background:var(--bg);color:var(--text)}.app-shell{display:flex;flex-direction:column;min-height:100%}.site-header{display:flex;align-items:center;gap:14px;max-width:1400px;width:100%;margin:0 auto;padding:18px 24px;border-bottom:1px solid var(--border);background:var(--surface)}.site-logo{width:44px;height:44px;border-radius:50%;flex-shrink:0}.site-brand-name{font-weight:700;font-size:18px;line-height:1.2}.app{display:flex;flex-direction:column;flex:1;max-width:1400px;width:100%;margin:0 auto;padding:40px 24px;gap:16px;box-sizing:border-box}.app-shell--wide .app{max-width:1400px}.landing{display:flex;flex-direction:column;gap:32px;align-items:stretch;max-width:720px;width:100%;margin:0 auto}.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.step{display:flex;gap:12px;align-items:flex-start;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px}.step-n{flex-shrink:0;width:28px;height:28px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px}.step-title{font-weight:600;margin-bottom:4px;font-size:14px}.step-body{font-size:13px;color:var(--text-muted);line-height:1.4}.site-footer{border-top:1px solid var(--border);background:var(--surface);padding:14px 24px;text-align:center;font-size:11px;color:var(--text-muted);display:flex;flex-direction:column;gap:2px}@media (max-width: 640px){.steps{grid-template-columns:1fr}}h1{font-size:28px;margin:0 0 8px}h2{font-size:20px;margin:0 0 12px}.lead{color:var(--text-muted);margin:0 0 24px;max-width:56ch;line-height:1.5}.paste-form,.manual-form{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:32px;width:100%;box-sizing:border-box;box-shadow:0 1px 2px #0000000a}.paste-form h1{font-size:32px;letter-spacing:-.01em}input[type=url],input[type=text],textarea{width:100%;max-width:100%;box-sizing:border-box}button[type=submit],.primary,a.primary,.secondary{min-height:44px}.field{display:flex;flex-direction:column;gap:6px;margin-bottom:16px}.field>span{font-size:13px;color:var(--text-muted)}input[type=url],input[type=text],textarea{font:inherit;padding:10px 12px;border:1px solid var(--border);border-radius:6px;background:#fff;color:var(--text)}input:focus,textarea:focus{outline:2px solid var(--accent);outline-offset:1px;border-color:var(--accent)}textarea{resize:vertical;min-height:80px;font-family:inherit}button,.primary,.secondary,a.primary{font:inherit;font-weight:600;padding:10px 18px;border-radius:6px;border:1px solid transparent;cursor:pointer;text-decoration:none;display:inline-block}button[type=submit],.primary,a.primary{background:var(--accent);color:#fff}button[type=submit]:disabled{background:#c8c8c8;cursor:not-allowed}.secondary{background:transparent;color:var(--text);border-color:var(--border)}.link{background:transparent;border:none;padding:0;color:var(--accent);text-decoration:underline;cursor:pointer;align-self:flex-start}.error{background:#fdecec;border:1px solid #f4c2c2;color:#8b1f1f;padding:10px 14px;border-radius:6px;margin:0;max-width:640px}.preview-pane{display:grid;grid-template-columns:minmax(280px,360px) 1fr;gap:24px;flex:1;min-height:70vh}.edit-panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;display:flex;flex-direction:column;gap:4px}.actions{margin-top:auto;display:flex;flex-direction:column;gap:8px}.actions .primary,.actions a.primary{text-align:center}.viewer{background:#2d2d2d;border-radius:var(--radius);overflow:hidden;min-height:600px}.viewer iframe{border:none;display:block;width:100%;height:100%}@media (max-width: 900px){.preview-pane{grid-template-columns:1fr}.viewer{min-height:60vh}}@media (max-width: 640px){.app{padding:20px 16px}.site-header{padding:14px 16px}.paste-form,.manual-form{padding:22px}.paste-form h1{font-size:26px}.lead{font-size:15px}.edit-panel{padding:16px}.viewer{min-height:70vh}}