:root{--bg: #f7f7f7;--text: #111;--card: #fff;--muted: #666;--border: #d0d0d0;--shadow: 0 6px 20px rgba(0,0,0,.08);--primary: #111;--primaryText: #fff;--inputBg: #fff;--inputText: #111;--transcriptBg: #f0f0f0;--link: #2b59ff}:root[data-theme=dark]{--bg: #0f1115;--text: #e9e9ea;--card: #151923;--muted: #a7a7ad;--border: #2a2f3a;--shadow: 0 10px 30px rgba(0,0,0,.35);--primary: #e9e9ea;--primaryText: #0f1115;--inputBg: #0f1115;--inputText: #e9e9ea;--transcriptBg: #0f1115;--link: #8aa2ff}*{box-sizing:border-box}html,body{margin:0;padding:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--text)}a{color:var(--link);text-decoration:none}a:hover{text-decoration:underline}.container{max-width:900px;margin:40px auto;padding:24px;background:var(--card);border-radius:12px;box-shadow:var(--shadow);border:1px solid var(--border)}section{margin-bottom:22px}h1{margin:0 0 10px;font-size:44px;line-height:1.1}h2{margin:18px 0 10px}input,select{background:var(--inputBg);color:var(--inputText);border:1px solid var(--border);border-radius:8px;padding:10px}button{border-radius:10px;border:1px solid transparent;padding:10px 14px;font-size:14px;font-weight:600;background:var(--primary);color:var(--primaryText);cursor:pointer}button:hover{opacity:.92}button:disabled{opacity:.55;cursor:not-allowed}.summary ul{padding-left:18px}.transcript{background:var(--transcriptBg);border:1px solid var(--border);padding:12px;border-radius:10px;white-space:pre-wrap}.muted{color:var(--muted)}.themeToggle{float:right;background:transparent;color:var(--text);border:1px solid var(--border)}.themeToggle:hover{background:#7f7f7f1f}