*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Arial,Helvetica,sans-serif;color:#263238;background:#f7f9fc;line-height:1.6}.topbar{position:sticky;top:0;z-index:20;height:72px;background:#fff;display:flex;align-items:center;gap:28px;padding:0 6%;box-shadow:0 2px 14px #00000012}.logo{font-weight:900;font-size:22px;color:#173b6c;text-decoration:none;white-space:nowrap}.logo span{color:#16a085}.topbar nav{display:flex;gap:18px;flex:1}.topbar nav a{color:#405060;text-decoration:none;font-size:14px}.login-btn,.course-card button{border:0;border-radius:10px;background:#173b6c;color:white;padding:10px 18px;cursor:pointer}.menu-toggle{display:none;border:0;background:none;font-size:25px}.hero{min-height:590px;padding:80px 8%;display:grid;grid-template-columns:1.25fr .75fr;align-items:center;gap:60px;background:linear-gradient(135deg,#eaf7f5,#eef3fb)}.badge,.eyebrow{font-size:12px;font-weight:800;letter-spacing:1.4px;color:#16a085}.hero h1{font-size:clamp(40px,6vw,68px);line-height:1.08;margin:16px 0}.hero h1 span{color:#16a085}.hero p{font-size:19px;max-width:680px;color:#566575}.actions{display:flex;gap:12px;margin-top:28px}.btn{display:inline-block;border:0;border-radius:10px;padding:13px 22px;font-weight:700;text-decoration:none;cursor:pointer}.primary{background:#173b6c;color:#fff}.secondary{background:#fff;color:#173b6c;border:1px solid #d6dee8}.small{padding:9px 15px;font-size:13px}.hero-card{background:#fff;border-radius:24px;padding:30px;box-shadow:0 20px 60px #173b6c20}.play,.fake-video{height:190px;border-radius:16px;background:linear-gradient(135deg,#173b6c,#16a085);display:grid;place-items:center;color:#fff;font-size:45px}.stats{display:grid;grid-template-columns:repeat(4,1fr);background:#173b6c;color:#fff;padding:28px 8%;text-align:center}.stats div{border-right:1px solid #ffffff30}.stats div:last-child{border:0}.stats strong{display:block;font-size:30px}.stats span{opacity:.8}.section{padding:80px 8%}.alt{background:#eef3f7}.section-head{display:flex;justify-content:space-between;align-items:end;margin-bottom:28px}.section h2{font-size:34px;margin:5px 0}.text-btn{border:0;background:none;color:#16a085;font-weight:bold;cursor:pointer}.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.course-card{background:#fff;padding:25px;border-radius:18px;box-shadow:0 7px 25px #1b35510d}.icon{font-size:35px}.tag{display:inline-block;color:#16a085;background:#e8f7f3;padding:4px 8px;border-radius:6px;font-size:11px;font-weight:bold;margin-top:10px}.course-card h3{margin:10px 0 5px}.course-card p{color:#687783;font-size:14px;min-height:48px}.progress{height:7px;background:#e6ebef;border-radius:10px;overflow:hidden;margin:18px 0 5px}.progress i{display:block;height:100%;background:#16a085}.course-card small{display:block;color:#6c7b86;margin-bottom:15px}.course-card button{width:100%}.lesson-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.lesson{background:#fff;border-radius:18px;overflow:hidden;box-shadow:0 7px 25px #1b35510d}.lesson>div:last-child{padding:20px}.video-thumb{height:180px;background:linear-gradient(135deg,#173b6c,#2c6ba8);display:grid;place-items:center;color:#fff;font-size:45px}.video-thumb.math{background:linear-gradient(135deg,#805ad5,#4c51bf)}.video-thumb.english{background:linear-gradient(135deg,#ed8936,#dd6b20)}.lesson p{color:#687783}.material-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.material-grid button{background:#fff;border:1px solid #e1e7ed;border-radius:15px;padding:25px;text-align:left;cursor:pointer;transition:.2s}.material-grid button:hover{transform:translateY(-3px);box-shadow:0 10px 25px #0001}.material-grid b,.material-grid small{display:block}.material-grid button:first-letter{font-size:28px}.material-grid small{color:#71808b;margin-top:5px}.quiz-box{max-width:760px;margin:auto;background:#fff;padding:38px;border-radius:22px;box-shadow:0 10px 35px #173b6c12}.options{display:grid;gap:12px;margin-top:20px}.options button{padding:15px;text-align:left;background:#f4f7fa;border:1px solid #dce4ea;border-radius:10px;cursor:pointer}.options button:hover{border-color:#16a085}.quiz-result{font-weight:bold;margin-top:18px}.dashboard{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.metric{background:#fff;padding:25px;border-radius:16px;text-align:center}.metric strong{font-size:35px;color:#173b6c;display:block}.metric span{color:#71808b}.support{display:grid;grid-template-columns:2fr 1fr;gap:30px;align-items:center;background:#173b6c;color:#fff}.support-card{background:#ffffff12;border:1px solid #ffffff25;padding:30px;border-radius:20px}.support-card div{font-size:35px}.support-card span{color:#73e6bd}.support .eyebrow{color:#73e6bd}.support p{color:#d7e1ea}footer{background:#102b4d;color:#dce5ee;padding:35px 8%;display:flex;justify-content:space-between;gap:20px;align-items:center}.modal{display:none;position:fixed;inset:0;background:#07111c99;z-index:50;align-items:center;justify-content:center;padding:20px}.modal.active{display:flex}.modal-content{background:#fff;width:min(440px,100%);padding:30px;border-radius:20px;position:relative}.lesson-modal{width:min(760px,100%)}.close{position:absolute;right:15px;top:10px;border:0;background:none;font-size:28px;cursor:pointer}.modal input{width:100%;padding:13px;margin:8px 0;border:1px solid #d9e0e6;border-radius:9px}.modal .btn{width:100%;margin-top:10px}.center{text-align:center}.chat{position:fixed;right:25px;bottom:25px;width:350px;background:#fff;border-radius:18px;box-shadow:0 15px 50px #0003;z-index:40;display:none;overflow:hidden}.chat.active{display:block}.chat-head{background:#173b6c;color:#fff;padding:15px 18px;display:flex;justify-content:space-between}.chat-head button{background:none;color:#fff;border:0;font-size:22px;cursor:pointer}.chat-body{height:280px;padding:15px;overflow:auto;background:#f5f8fa}.bot,.user{max-width:85%;padding:10px 13px;border-radius:13px;margin-bottom:10px;font-size:14px}.bot{background:#fff}.user{background:#173b6c;color:#fff;margin-left:auto}.quick{display:flex;gap:5px;padding:8px;overflow:auto}.quick button{white-space:nowrap;border:1px solid #d8e1e7;background:#fff;border-radius:15px;padding:6px 9px;cursor:pointer}.chat-input{display:flex;border-top:1px solid #e1e6ea}.chat-input input{flex:1;border:0;padding:13px;outline:0}.chat-input button{border:0;background:#16a085;color:#fff;width:50px}.toast{position:fixed}.lesson-modal p{color:#687783}#toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%) translateY(30px);background:#173b6c;color:#fff;padding:12px 20px;border-radius:10px;opacity:0;transition:.3s;z-index:100}#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
@media(max-width:900px){.topbar{padding:0 5%}.menu-toggle{display:block;margin-left:auto}.topbar nav{display:none;position:absolute;top:72px;left:0;right:0;background:#fff;padding:20px;flex-direction:column}.topbar nav.open{display:flex}.hero{grid-template-columns:1fr;padding:60px 6%}.cards{grid-template-columns:repeat(2,1fr)}.lesson-grid{grid-template-columns:1fr}.material-grid{grid-template-columns:repeat(2,1fr)}.stats,.dashboard{grid-template-columns:repeat(2,1fr)}.support{grid-template-columns:1fr}footer{flex-direction:column;align-items:flex-start}}
@media(max-width:560px){.topbar{gap:10px}.login-btn{display:none}.hero h1{font-size:40px}.section{padding:55px 5%}.cards,.material-grid,.stats,.dashboard{grid-template-columns:1fr}.stats div{border-right:0;border-bottom:1px solid #ffffff30;padding:10px}.chat{right:10px;bottom:10px;width:calc(100% - 20px)}.actions{flex-direction:column}.btn{text-align:center}}
/* Estilo da Logo com link para a página inicial */
.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: #1e3a8a;
  text-decoration: none;
  display: inline-block;
  transition: opacity 0.2s ease;
}

.logo span {
  color: #2563eb;
}

/* Efeito ao passar o mouse */
.logo:hover {
  opacity: 0.85;
  cursor: pointer;
}