:root{--primary:#4f46e5;--secondary:#06b6d4;--success:#22c55e;--danger:#ef4444;--warning:#f59e0b;--ink:#172033;--muted:#667085;--bg:#f5f7fb;--card:#fff;--line:#e7eaf1;--radius:18px}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,system-ui,-apple-system,Segoe UI,sans-serif}.topbar{height:72px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:28px;padding:0 max(24px,calc((100vw - 1180px)/2));position:sticky;top:0;z-index:20}.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:800;text-decoration:none;font-size:19px}.brand-mark{display:grid;place-items:center;width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;font-size:13px}.topbar nav{display:flex;gap:18px;flex:1}.topbar nav a,.user-chip a{color:var(--muted);text-decoration:none;font-weight:650}.topbar nav a:hover{color:var(--primary)}.nav-cta,.btn{background:var(--primary)!important;color:#fff!important;padding:11px 16px;border-radius:12px;border:0;text-decoration:none;font-weight:750;cursor:pointer}.btn.secondary{background:#eef2ff!important;color:var(--primary)!important}.btn.danger{background:var(--danger)!important}.btn.success{background:var(--success)!important}.user-chip{display:flex;align-items:center;gap:10px;font-size:14px}.user-chip strong{padding-left:10px;border-left:1px solid var(--line)}.container{max-width:1180px;margin:32px auto;padding:0 20px}.hero{display:grid;grid-template-columns:1.25fr .75fr;gap:24px;align-items:center;padding:42px;border-radius:28px;background:linear-gradient(135deg,#312e81,#4f46e5 55%,#0891b2);color:#fff}.hero h1{font-size:clamp(34px,5vw,62px);line-height:1.04;margin:0 0 18px}.hero p{font-size:18px;opacity:.9;max-width:650px}.hero .btn{display:inline-block;background:#fff!important;color:#3730a3!important;margin-top:12px}.hero-art{font-size:120px;text-align:center}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.grid.two{grid-template-columns:repeat(2,1fr)}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 10px 30px rgba(31,41,55,.04)}.card h2,.card h3{margin-top:0}.stat{font-size:30px;font-weight:850}.muted{color:var(--muted)}.progress{height:12px;border-radius:999px;background:#eceef5;overflow:hidden}.progress span{display:block;height:100%;background:linear-gradient(90deg,var(--primary),var(--secondary));border-radius:inherit}.section-title{display:flex;justify-content:space-between;align-items:center;margin:32px 0 16px}.lesson-card{display:flex;gap:16px;align-items:center}.lesson-number{flex:0 0 46px;height:46px;display:grid;place-items:center;border-radius:14px;background:#eef2ff;color:var(--primary);font-weight:850}.lesson-card.done .lesson-number{background:#dcfce7;color:#15803d}.level-label{font-weight:800}.form-card{max-width:520px;margin:50px auto}.field{display:grid;gap:7px;margin-bottom:16px}.field label{font-weight:700}.field input,.field select,.field textarea{width:100%;border:1px solid #d7dce6;border-radius:12px;padding:13px 14px;font:inherit;background:#fff}.field input:focus,.field textarea:focus{outline:3px solid #e0e7ff;border-color:var(--primary)}.alert{padding:14px 16px;border-radius:12px;margin:16px 0}.alert.success{background:#dcfce7;color:#166534}.alert.error{background:#fee2e2;color:#991b1b}.alert.info{background:#e0f2fe;color:#075985}.pending-page{position:fixed;inset:0;background:#fff;display:grid;place-items:center;text-align:center;padding:24px}.pending-box{max-width:560px}.pending-box h1{font-size:34px}.pending-box a{color:var(--primary);font-weight:800}.exercise{margin:22px 0;padding:20px;border:1px solid var(--line);border-radius:16px}.options{display:grid;gap:9px;margin-top:12px}.option{padding:12px;border:1px solid var(--line);border-radius:11px;cursor:pointer}.option:hover{border-color:var(--primary);background:#f5f3ff}.word-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.word-card{background:#fff;border:1px solid var(--line);border-radius:15px;padding:17px}.word-card h3{margin:0 0 5px}.mic{width:128px;height:128px;border:0;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;font-size:50px;box-shadow:0 18px 50px rgba(79,70,229,.3);cursor:pointer}.mic.listening{animation:pulse 1.2s infinite}.speak-panel{text-align:center;padding:40px}.score{font-size:42px;font-weight:900;color:var(--primary)}@keyframes pulse{50%{transform:scale(1.07);box-shadow:0 18px 70px rgba(6,182,212,.45)}}.chat-toggle{position:fixed;right:22px;bottom:22px;border:0;border-radius:999px;background:var(--primary);color:#fff;padding:14px 18px;font-weight:800;box-shadow:0 12px 35px rgba(79,70,229,.35);z-index:40;cursor:pointer}.chat-widget{position:fixed;right:22px;bottom:80px;width:min(380px,calc(100vw - 24px));height:560px;max-height:calc(100vh - 110px);background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:0 24px 70px rgba(23,32,51,.22);z-index:50;overflow:hidden}.chat-head{height:66px;background:var(--primary);color:#fff;display:flex;justify-content:space-between;align-items:center;padding:14px 17px}.chat-head small{display:block;opacity:.8}.chat-head button{border:0;background:none;color:#fff;font-size:28px}.chat-tabs{display:flex;gap:6px;padding:9px;border-bottom:1px solid var(--line)}.chat-tabs button{flex:1;border:0;border-radius:9px;padding:8px;background:#f2f4f7}.chat-tabs button.active{background:#e0e7ff;color:var(--primary);font-weight:750}.chat-messages{height:405px;overflow:auto;padding:14px}.message{margin-bottom:12px}.message-head{font-size:12px;color:var(--muted);display:flex;gap:8px}.message-head strong{color:var(--ink)}.message-body{display:inline-block;background:#f2f4f7;border-radius:4px 14px 14px 14px;padding:9px 11px;margin-top:3px;max-width:90%;word-break:break-word}.chat-form{display:flex;gap:7px;padding:10px;border-top:1px solid var(--line)}.chat-form input{min-width:0;flex:1;border:1px solid var(--line);border-radius:11px;padding:10px}.chat-form button{border:0;border-radius:11px;background:var(--primary);color:#fff;font-weight:750}.admin-layout{display:grid;grid-template-columns:220px 1fr;gap:24px}.admin-menu{display:grid;align-content:start;gap:7px}.admin-menu a{padding:11px 13px;border-radius:10px;color:var(--ink);text-decoration:none}.admin-menu a:hover{background:#eef2ff;color:var(--primary)}table{width:100%;border-collapse:collapse;background:#fff}th,td{text-align:left;padding:12px;border-bottom:1px solid var(--line)}th{font-size:13px;color:var(--muted)}.inline{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.badge{display:inline-block;padding:5px 9px;border-radius:999px;background:#f2f4f7;font-size:12px;font-weight:750}@media(max-width:850px){.topbar{padding:0 14px}.topbar nav{display:none}.brand{flex:1}.user-chip span,.user-chip a{display:none}.container{margin:20px auto}.hero{grid-template-columns:1fr;padding:28px}.hero-art{display:none}.grid,.grid.two,.word-grid{grid-template-columns:1fr}.admin-layout{grid-template-columns:1fr}.admin-menu{display:flex;overflow:auto}.chat-widget{right:12px}.section-title{align-items:flex-start;gap:12px;flex-direction:column}}