*{box-sizing:border-box}body{margin:0;font-family:Arial,sans-serif;color:#13223f;background:#f6f8fc}header{height:94px;background:#fff;border-bottom:1px solid #e5e9f1;display:flex;align-items:center;justify-content:space-between;padding:0 6%}.brand{display:flex;flex-direction:column}.brand b{color:#17458f;letter-spacing:.5px}.brand span{font-size:11px;color:#5e7698;margin-top:3px}nav{display:flex;gap:10px;align-items:center}button{border:0;background:transparent;padding:11px 15px;font-size:14px;cursor:pointer;color:#102344}button.primary{background:#17458f;color:#fff;border-radius:9px;font-weight:700}button.large{padding:14px 19px;font-size:15px}.view{display:none}.view.active{display:block}.hero{max-width:1200px;margin:auto;min-height:700px;padding:80px 5%;display:grid;grid-template-columns:1.05fr .95fr;gap:55px;align-items:center}.hero h1{font-size:48px;line-height:1.08;margin:18px 0}.hero p{font-size:17px;color:#5a7193;line-height:1.6}.hero label,label{font-size:12px;font-weight:800;letter-spacing:1.4px;color:#2560ba}.card{background:#fff;border:1px solid #e1e7f0;border-radius:18px;padding:28px;box-shadow:0 12px 30px rgba(20,45,80,.06)}.mock{padding:30px}.mock h2{margin:18px 0 24px}.resource{background:#f5f7fb;padding:17px 18px;border-radius:11px;margin:11px 0;display:flex;justify-content:space-between}.wrap{max-width:1100px;margin:auto;padding:70px 5%;min-height:650px}.wrap h1{font-size:38px}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:28px}.subject-card h2{margin:7px 0}.price{font-size:22px;font-weight:700;margin:18px 0}.subject-card .muted{color:#647897}.narrow{max-width:700px;margin:auto;padding:70px 5%;min-height:650px}.narrow h1{font-size:36px}form{display:grid;gap:13px;margin-top:22px}input,select{width:100%;padding:14px;border:1px solid #cfd8e6;border-radius:9px;font-size:15px;background:#fff}#subjectGrade{max-width:220px;margin-top:18px}.dashboard{display:grid;grid-template-columns:240px 1fr;gap:25px;margin-top:25px}.dashboard aside{display:flex;flex-direction:column;gap:7px}.dashboard aside button{text-align:left;background:#fff;border:1px solid #e2e8f0;border-radius:8px}.dashhead{display:flex;justify-content:space-between;align-items:center}.message{padding:12px;border-radius:8px;background:#f2f6fb}.success{background:#edf9f0;color:#176a2c}.warning{background:#fff8e8;color:#785400}footer{background:#142544;color:#fff;text-align:center;padding:26px}@media(max-width:800px){header{padding:0 4%;height:68px}.brand b{font-size:15px}.brand span{font-size:9px}nav{gap:2px}nav button{padding:9px 8px;font-size:13px}nav button[data-view="home"],nav button[data-view="subjects"]{display:none}nav button[data-view="login"],nav button[data-view="signup"]{display:inline-block}.hero{grid-template-columns:1fr;padding:45px 5% 60px}.hero h1{font-size:38px}.grid{grid-template-columns:1fr}.dashboard{grid-template-columns:1fr}.wrap{padding-left:5%;padding-right:5%}}@media(max-width:390px){header{padding:0 3%}.brand{min-width:0}.brand b{font-size:14px}nav button{padding:8px 7px;font-size:12px}}