/* /extension/ landing page */
.ext-cta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:22px}
.ext-how{margin-top:12px;margin-bottom:36px}
.ext-how h2{font-family:var(--font-display);font-size:clamp(1.5rem,3vw,2rem);margin:0 0 18px}
.ext-flow{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.ext-flow li{position:relative;padding:22px 20px 20px;border-radius:var(--radius-lg);background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-sm)}
.ext-flow h3{margin:12px 0 6px;font-size:1.05rem}
.ext-flow p{margin:0;color:var(--text-2);font-size:.95rem;line-height:1.55}
.ext-num{display:grid;place-items:center;width:36px;height:36px;border-radius:12px;background:var(--spotlight-btn);color:var(--on-spotlight);font-weight:800}
.ext-tip{margin:18px 0 0;padding:14px 18px;border-radius:var(--radius);background:var(--accent-soft);color:var(--text)}
kbd{font:600 .85em ui-monospace,"SF Mono",Consolas,monospace;padding:2px 6px;border-radius:6px;border:1px solid var(--line-strong);background:var(--surface-2)}
@media (max-width:900px){.ext-flow{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.ext-flow{grid-template-columns:1fr}}
/* Practice form */
.demo-form-wrap{margin-bottom:48px}
.demo-form{max-width:760px;display:grid;gap:16px;padding:28px;border-radius:var(--radius-lg);background:var(--surface);border:1px solid var(--line)}
.demo-form h2{font-family:var(--font-display);margin:8px 0 0}
.demo-form label{display:grid;gap:6px;font-weight:600}
.demo-form input:not([type=radio]):not([type=checkbox]),.demo-form textarea,.demo-form select{font:inherit;font-weight:400;padding:10px 12px;border-radius:10px;border:1px solid var(--line-strong);background:var(--surface);color:var(--text)}
.demo-form fieldset{border:1px solid var(--line);border-radius:12px;padding:12px 16px;display:grid;gap:6px}
.demo-form legend{font-weight:600;padding:0 6px}
.demo-form .demo-choice{display:flex;align-items:center;gap:8px;font-weight:400}
.demo-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.demo-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
@media (max-width:560px){.demo-row{grid-template-columns:1fr}}

/* Demo video */
.ext-video{margin:8px auto 40px;max-width:980px}