*{box-sizing:border-box}body{margin:0;font-family:Arial,"Noto Sans Devanagari",sans-serif;color:#173b35;background:#f7fbfa;line-height:1.6}a{text-decoration:none;color:inherit}.wrap{max-width:1100px;margin:auto;padding:0 20px}.nav{max-width:1100px;margin:auto;padding:16px 20px;display:flex;justify-content:space-between;align-items:center;gap:20px}.logo{font-size:22px;font-weight:800;color:#007c68}.nav nav{display:flex;gap:18px;flex-wrap:wrap;font-size:14px}.nav nav a:hover{color:#007c68}.hero{padding:55px 0;background:linear-gradient(135deg,#eefaf7,#fff)}.hero-grid{display:grid;grid-template-columns:1.5fr .8fr;gap:40px;align-items:center}.hero h1{font-size:48px;line-height:1.15;margin:12px 0}.hero p{font-size:18px;color:#526a65}.profile{background:#fff;border-radius:22px;padding:25px;text-align:center;box-shadow:0 10px 35px #004c3d18}.photo{width:210px;height:210px;margin:auto;border-radius:50%;overflow:hidden;border:7px solid #007c68}.photo img{width:100%;height:100%;object-fit:cover}.profile h2{margin:12px 0 0}.buttons{display:flex;gap:12px;flex-wrap:wrap;margin:22px 0}.btn{display:inline-block;padding:11px 18px;border-radius:9px;background:#007c68;color:#fff;font-weight:700}.btn.alt{background:#e5f3ef;color:#006b5b}.btn.light{background:#fff;color:#006b5b}.ticks{font-size:14px;color:#47736b}.stats{background:#007c68;color:#fff}.statgrid{display:grid;grid-template-columns:repeat(4,1fr);text-align:center}.statgrid div{padding:16px}.statgrid b,.statgrid small{display:block}.section{padding:55px 0}.pale{background:#eef8f5}.section h2{font-size:32px;margin:8px 0}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card,.material,.quiz-card{background:#fff;padding:22px;border-radius:16px;box-shadow:0 5px 22px #004c3d10;border:1px solid #e3eeeb}.card h3{margin:8px 0}.card a,.material a{color:#007c68;font-weight:700}.materials{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.material{display:flex;justify-content:space-between;gap:15px}.chapter-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.chapter{background:#fff;padding:16px;border-radius:12px;border:1px solid #e1ece9}.chapter a{color:#007c68;font-weight:700}.about{display:grid;grid-template-columns:1.2fr .8fr;gap:35px}.quote{background:#dff4ef;padding:30px;border-radius:20px;font-size:18px}.page-head{padding:45px 0;background:#eaf7f4}.page-head h1{font-size:40px;margin:5px 0}.list{display:grid;gap:12px}.list-item{background:#fff;padding:18px;border-radius:12px;border:1px solid #e3ecea}.quiz-card{margin:15px 0}.option{display:block;padding:10px;margin:8px 0;border:1px solid #dce9e6;border-radius:8px}.option input{margin-right:8px}.result{font-weight:700;margin-top:10px}.footer{background:#004c43;color:#fff;padding:28px 0}.footer span{float:right}.back{display:inline-block;margin-top:15px;color:#007c68;font-weight:700}@media(max-width:760px){.hero-grid,.about{grid-template-columns:1fr}.cards,.chapter-grid{grid-template-columns:1fr}.materials{grid-template-columns:1fr}.statgrid{grid-template-columns:repeat(2,1fr)}.hero h1{font-size:36px}.nav{align-items:flex-start;flex-direction:column}.nav nav{gap:12px}.footer span{float:none;display:block;margin-top:8px}}