:root{--bg: #eef6f2;--bg-deep: #d9ebe3;--ink: #1c2b26;--muted: #5b7268;--brand: #1f6f5b;--brand-dark: #145544;--accent: #e8a317;--card: #fffdf8;--danger: #b33b3b;--radius: 18px;--touch: 48px;font-family:Nunito,system-ui,sans-serif;color:var(--ink);background:radial-gradient(1200px 600px at 10% -10%,#fff7d6 0%,transparent 55%),radial-gradient(900px 500px at 100% 0%,#cfe8dc 0%,transparent 50%),var(--bg)}*{box-sizing:border-box}html,body,#root{min-height:100%}body{margin:0}button,input{font:inherit}a{color:inherit;text-decoration:none}.app-shell{max-width:920px;margin:0 auto;padding:16px 16px 96px}.brand{font-family:Fraunces,Georgia,serif;font-weight:700;font-size:clamp(1.8rem,4vw,2.4rem);letter-spacing:-.02em;color:var(--brand-dark)}.sub{color:var(--muted);margin:.25rem 0 1.25rem}.nav{position:fixed;left:0;right:0;bottom:0;display:grid;grid-template-columns:repeat(5,1fr);gap:4px;padding:10px 12px calc(10px + env(safe-area-inset-bottom));background:#fffdf8f0;border-top:1px solid #d7e5de;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.nav a{min-height:var(--touch);display:grid;place-items:center;border-radius:14px;font-weight:800;font-size:.85rem;color:var(--muted)}.nav a.active{background:var(--brand);color:#fff}.panel{background:var(--card);border-radius:var(--radius);padding:1.1rem 1.2rem;box-shadow:0 10px 30px #1c2b260f;margin-bottom:1rem}.stack{display:grid;gap:.75rem}.btn{min-height:var(--touch);border:0;border-radius:14px;padding:.7rem 1.1rem;background:var(--brand);color:#fff;font-weight:800;cursor:pointer}.btn:disabled{opacity:.5}.btn.secondary{background:var(--bg-deep);color:var(--brand-dark)}.btn.accent{background:var(--accent);color:#3a2a00}.btn.danger{background:var(--danger)}.pin-row{display:flex;gap:.5rem;flex-wrap:wrap}.pin-row input{flex:1;min-height:var(--touch);border-radius:14px;border:2px solid #cfe0d8;padding:.6rem .9rem;font-size:1.2rem;letter-spacing:.2em}.list-card{display:flex;justify-content:space-between;align-items:center;gap:1rem;padding:1rem 1.1rem;border-radius:16px;background:linear-gradient(135deg,#fffdf8,#f3faf6);border:1px solid #dceee5}.list-card h3{margin:0;font-family:Fraunces,Georgia,serif}.badge{display:inline-block;padding:.25rem .6rem;border-radius:999px;background:#e7f4ee;color:var(--brand-dark);font-weight:800;font-size:.8rem}.reader{font-size:clamp(1.25rem,2.6vw,1.55rem);line-height:1.75;user-select:text;-webkit-user-select:text}.reader .word{border-radius:6px;padding:0 2px;cursor:pointer}.reader .word:active,.reader .word.selected{background:#ffe8a3}.illustration-card{margin:1.2rem 0;border-radius:18px;overflow:hidden;background:#fff;border:1px solid #dcefe6;box-shadow:0 6px 20px #1c2b260f;text-align:center}.illustration-img{display:block;width:100%;max-height:420px;object-fit:contain;background:#fff;margin:0 auto}.illustration-caption{padding:.5rem .9rem .65rem;font-size:.9rem;color:var(--muted);font-style:italic;background:#fbfdfc;border-top:1px solid #f0f7f4}.reader-paragraph{margin:.85rem 0;line-height:1.85}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#14282273;display:grid;place-items:end center;padding:16px;z-index:20}.modal{width:min(560px,100%);background:var(--card);border-radius:22px;padding:1.25rem;box-shadow:0 20px 50px #0003}.tabs{display:flex;gap:.5rem;margin-bottom:.75rem}.tabs button{flex:1;min-height:44px;border:0;border-radius:12px;background:var(--bg-deep);font-weight:800;color:var(--muted)}.tabs button.active{background:var(--brand);color:#fff}.choice{width:100%;text-align:left;min-height:var(--touch);border-radius:14px;border:2px solid #d5e6de;background:#fff;padding:.8rem 1rem;font-weight:700}.choice.picked{border-color:var(--brand);background:#e7f4ee}.points{font-weight:800;color:var(--brand-dark)}.err{color:var(--danger);font-weight:700}