:root{--bg:#fbfaf5;--card:#fff;--ink:#143331;--muted:#667775;--line:#dfe8e5;--brand:#0f766e}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.45 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}.wrap{max-width:720px;margin:auto;padding:24px 16px 48px}.brand{font-family:Georgia,serif;font-size:34px;font-weight:700;margin:18px 0 4px}.sub{color:var(--muted);margin:0 0 22px}.card{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:20px;box-shadow:0 5px 18px #14333112;margin:14px 0}.hidden{display:none!important}button{border:0;border-radius:14px;padding:13px 16px;font-size:16px;font-weight:700;cursor:pointer}.primary{background:var(--brand);color:#fff;width:100%}.primary:disabled{opacity:.45}.ghost{background:transparent;color:var(--brand)}input{width:100%;padding:14px;border:1px solid #cfdcda;border-radius:13px;font-size:16px;margin:8px 0 14px}.pill{display:inline-block;padding:6px 10px;border-radius:999px;background:#edf5f3;font-size:13px;color:#315854}.progress{height:8px;border-radius:99px;background:#e8efed;overflow:hidden}.progress>div{height:100%;background:var(--brand);transition:width .2s}.option{display:flex;gap:12px;align-items:flex-start;border:1px solid var(--line);border-radius:15px;padding:13px;margin:10px 0;background:#fff}.option input{width:auto;margin:3px 0}.option.correct{border-color:#8fd1b3;background:#f0fbf5}.option.wrong{border-color:#e5aaa5;background:#fff4f3}.feedback{border-radius:15px;padding:15px;margin-top:16px}.feedback.ok{background:#edf9f2;color:#14532d}.feedback.partial{background:#fff8e6;color:#714b00}.feedback.bad{background:#fff1f0;color:#7a271a}.muted{color:var(--muted);font-size:14px}.source{border-left:3px solid #b5cbc6;padding-left:12px;margin-top:12px;color:#536966;font-size:14px}.conf{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:10px 0 16px}.conf button{padding:10px;background:#eef4f3;color:#254744}.conf button.active{background:var(--brand);color:white}.score{font-size:42px;font-family:Georgia,serif;margin:8px 0}.status{font-weight:800}.topline{display:flex;justify-content:space-between;align-items:center;gap:10px}.tiny{font-size:12px;color:var(--muted)}