*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Arial,sans-serif;color:#182230;background:#f7f9fb;line-height:1.65}a{text-decoration:none;color:inherit}.wrap{width:min(1120px,calc(100% - 36px));margin:auto}header{position:sticky;top:0;background:#fff;border-bottom:1px solid #e4e8ed;z-index:10}.nav{height:74px;display:flex;align-items:center;justify-content:space-between}.brand{font-weight:800;display:flex;align-items:center;gap:11px}.mark{width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,#195f75,#2b8295);color:#fff;display:grid;place-items:center}nav{display:flex;gap:22px}nav a{font-size:14px;color:#485365}#menuBtn{display:none;border:0;background:none;font-size:25px}.hero{padding:90px 0 70px;background:radial-gradient(circle at 85% 15%,#dceff2,transparent 26%),linear-gradient(#fff,#f2f8fa)}.heroGrid{display:grid;grid-template-columns:1.15fr .85fr;gap:55px;align-items:center}.tag{display:inline-block;padding:7px 12px;background:#e9f4f6;color:#195f75;border-radius:99px;font-size:12px;font-weight:800;text-transform:uppercase}h1{font-size:clamp(42px,6vw,68px);line-height:1.03;letter-spacing:-2.5px;margin:18px 0}h2{font-size:36px;line-height:1.15;margin:14px 0}.hero p,.lead,.cols p{color:#667085}.actions{display:flex;gap:12px;margin-top:28px}.btn{padding:12px 18px;border-radius:10px;background:#fff;border:1px solid #dfe5ea;font-weight:800}.primary{background:#195f75;color:#fff}.panel,.card,.contact{background:#fff;border:1px solid #e3e8ed;border-radius:18px;box-shadow:0 10px 28px rgba(15,43,52,.06)}.panel{padding:28px;border-radius:26px}.copyright{width:78px;height:78px;border-radius:22px;background:#e9f4f6;color:#195f75;display:grid;place-items:center;font-size:40px;font-weight:800}.row{border-top:1px solid #e3e8ed;padding:14px 0;display:flex;justify-content:space-between;gap:15px;font-size:13px}.row span{color:#667085}section{padding:74px 0;background:#fff}.alt{background:#f7f9fb}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:30px}.card{padding:25px}.card>b{color:#195f75}.card h3{margin:9px 0 5px}.card p{margin:0;color:#667085}.cols{display:grid;grid-template-columns:1fr 1fr;gap:55px;align-items:center}.checks{display:grid;gap:12px}.checks div{background:#fff;border:1px solid #e3e8ed;border-radius:12px;padding:14px 16px;font-weight:700}.dark{background:#102b34;color:#fff}.dark p{color:#c8d6da}.light{background:#ffffff1c;color:#fff}.contact{padding:24px}.contact span,.contact small{display:block;color:#667085}.contact a{display:block;color:#195f75;font-size:21px;font-weight:800;margin:4px 0 10px}footer{background:#0b2028;color:#fff;padding:30px 0}.foot{display:flex;justify-content:space-between;gap:25px}.foot small{display:block;color:#9fb0b7}

/* BOOK GALLERY */
.booksSection{background:#fff}
.booksTop{display:flex;align-items:end;justify-content:space-between;gap:20px}
.bookCount{font-size:14px;color:#667085;padding-bottom:10px}
.searchRow{margin:24px 0 26px}
#bookSearch{width:min(420px,100%);height:44px;border:1px solid #d9e0e6;border-radius:10px;padding:0 14px;font-size:15px;outline:none;background:#fff}
#bookSearch:focus{border-color:#2b8295;box-shadow:0 0 0 3px rgba(43,130,149,.10)}
.bookGallery{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px}
.bookCard{background:#fff;border:1px solid #dfe5ea;border-radius:10px;overflow:hidden;transition:transform .15s ease,box-shadow .15s ease}
.bookCard:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(15,43,52,.10)}
.bookCard img{display:block;width:100%;aspect-ratio:4/5;object-fit:cover;background:#eef3f5}
.bookTitle{padding:13px 14px 15px;font-weight:800;font-size:15px;line-height:1.35;min-height:58px}
.loading,.empty{grid-column:1/-1;padding:42px 12px;text-align:center;color:#667085;border:1px dashed #d9e0e6;border-radius:12px;background:#fafcfd}

/* BOOK VIEWER */
.bookPage{background:#f5f7f9;min-height:100vh}
.bookHeader{background:#fff;border-bottom:1px solid #e3e8ed}
.bookHeader .wrap{height:70px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.backLink{font-weight:700;color:#195f75}
.readerWrap{width:min(920px,calc(100% - 34px));margin:42px auto 70px}
.readerTop{display:grid;grid-template-columns:210px 1fr;gap:30px;align-items:start;background:#fff;border:1px solid #e3e8ed;border-radius:16px;padding:24px;box-shadow:0 10px 28px rgba(15,43,52,.05)}
.readerTop img{width:100%;border-radius:10px;display:block;background:#eef3f5}
.readerTop h1{font-size:38px;letter-spacing:-1.1px;margin:8px 0 12px}
.rightsNote{color:#667085;font-size:14px}
.bookContent{margin-top:24px;background:#fff;border:1px solid #e3e8ed;border-radius:16px;padding:34px;box-shadow:0 10px 28px rgba(15,43,52,.04)}
.bookContent p{margin:0 0 1.15em;white-space:pre-wrap;font-size:17px;line-height:1.8}
.readerFooter{margin-top:22px;color:#667085;font-size:13px;text-align:center}

@media(max-width:980px){.bookGallery{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:820px){#menuBtn{display:block}nav{display:none;position:absolute;top:74px;left:0;right:0;background:#fff;flex-direction:column;padding:18px}nav.open{display:flex}.heroGrid,.cols{grid-template-columns:1fr}.cards{grid-template-columns:1fr}.foot{flex-direction:column}h1{font-size:44px}.readerTop{grid-template-columns:150px 1fr}.readerTop h1{font-size:30px}}
@media(max-width:650px){.bookGallery{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.booksTop{align-items:flex-start;flex-direction:column}.readerTop{grid-template-columns:1fr}.readerTop img{max-width:220px}.bookContent{padding:22px}.bookTitle{font-size:14px}}