:root{--bg:#f6f6f8;--card:#fff;--text:#14151a;--muted:#6b7280;--line:#e6e6ea;--indigo:#4f46e5;--indigo-soft:#eef0fe;--shadow:0 8px 30px rgba(0,0,0,.08);color-scheme:light dark}@media (prefers-color-scheme:dark){:root{--bg:#0e0f13;--card:#1a1c22;--text:#f2f3f5;--muted:#9aa0ac;--line:#2a2d36;--indigo:#8b86f5;--indigo-soft:#23252f;--shadow:0 8px 30px rgba(0,0,0,.5)}}*{box-sizing:border-box;margin:0;padding:0}body,html{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased}.serif{font-family:Georgia,Times New Roman,serif}.muted{color:var(--muted)}.error{color:#e5484d;font-size:14px}button{cursor:pointer}button,input,select,textarea{font:inherit}.center-screen{min-height:100dvh;display:grid;place-items:center;padding:24px}.shell{max-width:640px;margin:0 auto;padding:0 16px 96px}.topbar{display:flex;align-items:center;justify-content:space-between;padding:18px 4px 8px;position:-webkit-sticky;position:sticky;top:0;background:var(--bg);z-index:5}.topbar h1{font-size:30px;font-weight:800}.chip{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:700;padding:6px 12px;border-radius:999px;box-shadow:var(--shadow);border:none}.chip,.tabbar{background:var(--card)}.tabbar{position:fixed;left:0;right:0;bottom:0;display:flex;justify-content:space-around;border-top:1px solid var(--line);padding:8px 4px calc(8px + env(safe-area-inset-bottom));z-index:10}.tab{display:flex;flex-direction:column;align-items:center;gap:2px;font-size:11px;background:none;border:none;color:var(--muted);padding:4px 10px;border-radius:12px}.tab.active{color:var(--indigo)}.tab .ic{font-size:20px}.gate-card{background:var(--card);box-shadow:var(--shadow);border-radius:22px;padding:34px 28px;width:100%;max-width:360px;text-align:center;display:flex;flex-direction:column;gap:12px}.gate-emoji{font-size:44px}.gate-card h1{font-size:30px}.input{width:100%;padding:13px 14px;border-radius:12px;border:1px solid var(--line);background:var(--bg);color:var(--text)}.btn-primary{background:var(--indigo);color:#fff;border:none;border-radius:12px;padding:13px 16px;font-weight:700}.btn-primary:disabled{opacity:.6}.btn-ghost{background:var(--indigo-soft);color:var(--indigo);border:none;border-radius:12px;padding:12px 16px;font-weight:700}.pick{min-height:100dvh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:24px}.pick h1{font-size:34px}.pick .row{display:flex;align-items:center;gap:16px;width:100%;max-width:380px;background:var(--card);box-shadow:var(--shadow);border:none;border-radius:20px;padding:16px;text-align:left;color:var(--text)}.pick .av{width:56px;height:56px;border-radius:16px;display:grid;place-items:center;font-size:28px;color:#fff}.pick .nm{font-size:20px;font-weight:800}.progress{display:flex;justify-content:space-between;font-size:13px;color:var(--muted);margin:6px 2px}.bar{height:5px;background:var(--line);border-radius:3px;overflow:hidden}.bar>i{display:block;height:100%;background:var(--indigo)}.flash{background:var(--card);border-radius:24px;box-shadow:var(--shadow);min-height:380px;padding:26px;display:flex;flex-direction:column;margin-top:14px}.flash .badges{display:flex;gap:8px}.badge{font-size:12px;font-weight:700;padding:3px 9px;border-radius:999px}.flash .word{flex:1 1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;text-align:center}.flash .word .fr{font-size:40px;font-weight:800;font-family:Georgia,serif}.flash .word .en{font-size:22px;color:var(--indigo)}.speakrow{display:flex;gap:22px}.iconbtn{background:none;border:none;color:var(--indigo);font-size:26px}.grades{display:grid;grid-template-columns:repeat(4,1fr);grid-gap:8px;gap:8px;margin-top:14px}.grade{border:none;border-radius:12px;padding:10px 4px;color:#fff;display:flex;flex-direction:column;gap:2px;font-size:12px;font-weight:700}.grade small{font-weight:500;opacity:.9}.example{border-top:1px solid var(--line);margin-top:12px;padding-top:12px;text-align:left;width:100%}.example .efr{font-style:italic}.example .een{color:var(--muted);font-size:14px}.section-title{font-size:13px;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.04em;margin:20px 2px 8px}.list{flex-direction:column;gap:8px}.item,.list{display:flex}.item{background:var(--card);border-radius:14px;padding:12px 14px;box-shadow:var(--shadow);align-items:center;gap:10px}.item .grow{flex:1 1}.item .t{font-weight:700}.item .s{font-size:14px;color:var(--muted)}.stat-row{display:flex;gap:10px;margin:6px 0 4px}.stat{flex:1 1;background:var(--card);border-radius:14px;box-shadow:var(--shadow);padding:12px;text-align:center}.stat b{display:block;font-size:22px;color:var(--indigo)}.stat span{font-size:12px;color:var(--muted)}.field{display:flex;flex-direction:column;gap:6px;margin-bottom:12px}.field label{font-size:13px;color:var(--muted);font-weight:600}.grid2{display:grid;grid-template-columns:1fr 1fr;grid-gap:10px;gap:10px}select.input,textarea.input{width:100%}.saveflash{color:#22a55b;font-weight:700}h2.page{font-size:30px;font-weight:800;margin:6px 2px 4px}.searchbar{width:100%;padding:11px 14px;border-radius:12px;border:1px solid var(--line);background:var(--card);color:var(--text);margin:6px 0}.quiz-opt{border:1px solid var(--line);border-radius:12px}.quiz-opt,.tool-link{width:100%;text-align:left;background:var(--card);padding:14px;margin-bottom:8px;color:var(--text)}.tool-link{border:none;box-shadow:var(--shadow);border-radius:14px;display:flex;align-items:center;gap:12px;font-weight:600}.tool-ic{width:34px;height:34px;border-radius:9px;display:grid;place-items:center;font-size:18px}.backlink{background:none;border:none;color:var(--indigo);font-weight:700;margin:6px 0;font-size:15px}