:root{--pdm-cyan:#00a9b7;--pdm-cyan-dark:#007d88;--pdm-red:#e22f3f;--pdm-ink:#101820;--pdm-muted:#5e6a71;--pdm-paper:#f7f7f3;--pdm-gold:#c7a15a;--white:#fff;--shadow:0 20px 60px #1018201f}*{box-sizing:border-box}html{scroll-behavior:smooth}body{color:var(--pdm-ink);background:var(--pdm-paper);margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}button,input,select,textarea{font:inherit}.site-shell{min-height:100vh}.container{width:min(1180px,100% - 40px);margin-inline:auto}.header{z-index:30;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);background:#f7f7f3f5;border-bottom:1px solid #10182014;position:sticky;top:0}.nav{align-items:center;gap:18px;min-height:86px;display:flex}.logo{object-fit:contain;width:178px;height:auto;max-height:70px}.nav-links{white-space:nowrap;align-items:center;gap:16px;font-size:.86rem;font-weight:750;display:flex}.nav-links a:hover,.text-link:hover{color:var(--pdm-cyan-dark)}.nav-cta{background:var(--pdm-red);color:#fff;white-space:nowrap;border-radius:999px;padding:11px 15px;font-size:.82rem;font-weight:850}.account-link{color:var(--pdm-cyan-dark);white-space:nowrap;font-size:.82rem;font-weight:850}.locale-links{gap:5px;font-size:.72rem;font-weight:850;display:flex}.locale-links a{border:1px solid #10182021;border-radius:999px;padding:5px 7px}.header-search{background:#fff;border:1px solid #10182024;border-radius:999px;align-items:center;min-width:190px;margin-inline-start:auto;display:flex;overflow:hidden}.header-search input{background:0 0;border:0;outline:0;width:150px;padding:9px 4px 9px 13px}.header-search button{cursor:pointer;background:0 0;border:0;padding:7px 12px;font-size:1.2rem}.hero{color:#fff;background:linear-gradient(125deg,#0b1b24 0%,#123844 52%,#007d88 100%);padding:94px 0 84px;position:relative;overflow:hidden}.hero:after{content:"";inset-inline-end:-180px;border:90px solid #ffffff0e;border-radius:50%;width:540px;height:540px;position:absolute;top:-170px}.hero-grid{z-index:2;grid-template-columns:1.35fr .65fr;align-items:center;gap:60px;display:grid;position:relative}.kicker,.eyebrow{color:#58dbe3;letter-spacing:.14em;text-transform:uppercase;font-size:.76rem;font-weight:900}.eyebrow{color:var(--pdm-cyan-dark);margin-bottom:10px;display:block}h1{max-width:930px;margin:18px 0 24px;font-family:Georgia,Times New Roman,serif;font-size:clamp(3rem,7vw,5.7rem);line-height:.98}h2,h3{font-family:Georgia,Times New Roman,serif}.hero p{color:#fffc;max-width:720px;font-size:1.12rem;line-height:1.75}.actions{flex-wrap:wrap;gap:14px;margin-top:30px;display:flex}.button{cursor:pointer;border:1px solid #0000;border-radius:999px;justify-content:center;align-items:center;padding:14px 22px;font-weight:850;display:inline-flex}.button-primary{background:var(--pdm-red);color:#fff}.button-secondary{color:#fff;border-color:#ffffff59}.hero-card{box-shadow:var(--shadow);background:#ffffff17;border:1px solid #ffffff2e;border-radius:28px;padding:28px}.hero-card strong{margin-bottom:8px;font-family:Georgia,serif;font-size:2.1rem;display:block}.page-hero{color:#fff;background:linear-gradient(135deg,#0c202a,#075e68);padding:78px 0}.page-hero h1{margin-bottom:18px;font-size:clamp(2.8rem,6vw,5rem)}.page-hero p{color:#ffffffc7;max-width:760px;font-size:1.08rem;line-height:1.7}.academic-page-hero{background:linear-gradient(135deg,#0b1b24,#5a4723)}.section{padding:78px 0}.section-white{background:#fff}.section-dark{background:var(--pdm-ink);color:#fff}.section-head{justify-content:space-between;align-items:end;gap:20px;margin-bottom:30px;display:flex}.section h2{margin:0;font-size:clamp(2rem,4vw,3.6rem)}.section-copy{color:var(--pdm-muted);max-width:650px;line-height:1.7}.grid{gap:22px;display:grid}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}.card{background:#fff;border:1px solid #10182014;border-radius:22px;overflow:hidden;box-shadow:0 14px 35px #1018200f}.card-body{padding:22px}.card h3{margin:0 0 10px;font-size:1.45rem}.card p{color:var(--pdm-muted);line-height:1.65}.cover{aspect-ratio:4/5;object-fit:cover;background:#e8eceb;width:100%}.badge{color:var(--pdm-cyan-dark);text-transform:capitalize;background:#00a9b71f;border-radius:999px;padding:7px 12px;font-size:.76rem;font-weight:800;display:inline-flex}.text-link{color:var(--pdm-cyan-dark);font-weight:850}.department-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.department{background:linear-gradient(150deg,#fff,#edf8f8);border:1px solid #00a9b726;border-radius:22px;min-height:245px;padding:25px;transition:transform .2s,box-shadow .2s}.department:hover{transform:translateY(-4px);box-shadow:0 18px 34px #10182014}.department-icon{background:var(--pdm-cyan);color:#fff;border-radius:16px;place-items:center;width:52px;height:52px;margin-bottom:20px;display:grid}.icon{width:27px;height:27px}.department h3{margin:0 0 10px;font-size:1.35rem}.department p{color:var(--pdm-muted);font-size:.94rem;line-height:1.55}.slider-wrap{position:relative}.slider-actions{justify-content:flex-end;gap:8px;margin-bottom:14px;display:flex}.slider-actions button{cursor:pointer;background:#fff;border:1px solid #10182024;border-radius:50%;width:42px;height:42px;font-size:1.2rem}.section-dark .slider-actions button{color:#fff;background:#ffffff14;border-color:#ffffff2e}.slider{scroll-snap-type:x mandatory;scrollbar-width:none;gap:20px;padding-bottom:8px;display:flex;overflow-x:auto}.slider::-webkit-scrollbar{display:none}.slider-card{scroll-snap-align:start;background:#fff;border:1px solid #10182014;border-radius:22px;flex:0 0 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span{color:#ffffffa6;margin-top:4px;font-size:.83rem}.academic-band{color:#fff;background:linear-gradient(135deg,#0b1b24,#183c45)}.academic-grid{grid-template-columns:.85fr 1.15fr;align-items:start;gap:58px;display:grid}.academic-grid>div>p{color:#ffffffbf;line-height:1.75}.academic-mini-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:15px;display:grid}.academic-mini-list article{background:#ffffff14;border:1px solid #ffffff1f;border-radius:18px;padding:20px}.academic-mini-list h3{font-size:1.08rem}.academic-mini-list p{color:#ffffffa6;font-size:.87rem}.academic-mini-list a{color:#7ee5ec;font-weight:850}.academic-library{gap:24px;display:grid}.academic-card{border:1px solid #e0e7e6;border-radius:24px;grid-template-columns:190px 1fr;gap:28px;padding:24px;display:grid}.academic-card>img{aspect-ratio:4/5;object-fit:cover;border-radius:14px;width:190px}.academic-card h2{margin:15px 0 8px;font-size:2rem}.academic-card p{color:var(--pdm-muted);line-height:1.6}.academic-meta{flex-wrap:wrap;align-items:center;gap:9px;display:flex}.academic-meta span:not(.badge){color:var(--pdm-muted);font-size:.8rem;font-weight:750}.doi{font-family:ui-monospace,monospace}.download-count{color:var(--pdm-muted);align-self:center;font-size:.84rem}.author-care-grid{grid-template-columns:1.1fr .9fr;gap:24px;display:grid}.care-card{color:#fff;background:#10242e}.care-card h2{margin:15px 0;font-size:2.6rem}.care-card p{color:#ffffffbf;line-height:1.7}.newsletter-panel{background:#fff;border:1px solid #e1e8e7;border-radius:28px;padding:30px}.newsletter-panel p{color:var(--pdm-muted);line-height:1.6}.newsletter{gap:8px;display:flex;position:relative}.newsletter input{border:1px solid #c9d3d2;border-radius:999px;flex:1;min-width:0;padding:13px 17px}.newsletter button{background:var(--pdm-cyan-dark);color:#fff;cursor:pointer;border:0;border-radius:999px;padding:13px 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0}.detail-grid{grid-template-columns:360px 1fr;align-items:start;gap:56px;display:grid}.detail-cover{width:100%;box-shadow:var(--shadow);border-radius:24px}.detail-title{margin:16px 0 18px;font-family:Georgia,serif;font-size:clamp(2.8rem,6vw,5.2rem);line-height:1}.author-row{align-items:center;gap:12px;margin:20px 0;font-weight:800;display:flex}.avatar{object-fit:cover;background:#fff;border:4px solid #fff;border-radius:50%;width:74px;height:74px;box-shadow:0 8px 20px #1018201f}.prose{color:#3e4a50;max-width:820px;font-size:1.05rem;line-height:1.82}.footer{color:#ffffffb8;background:#081217;padding:50px 0 0}.footer-columns{grid-template-columns:1.2fr .8fr .8fr 1.2fr;gap:34px;display:grid}.footer-logo{object-fit:contain;width:210px;height:auto;margin-bottom:15px}.footer h3{color:#fff;font-size:1.05rem}.footer-columns>div{flex-direction:column;gap:10px;display:flex}.footer-columns p{margin:0;line-height:1.55}.footer-bottom{border-top:1px solid #ffffff1a;margin-top:36px;padding:22px 0}[dir=rtl] body,[dir=rtl] input,[dir=rtl] textarea,[dir=rtl] select{text-align:right}[dir=rtl] .nav,[dir=rtl] .nav-links{flex-direction:row-reverse}[dir=rtl] .header-search{margin-inline:0 auto}[dir=rtl] .hero-grid,[dir=rtl] .academic-grid,[dir=rtl] .author-care-grid,[dir=rtl] .form-layout,[dir=rtl] .academic-card,[dir=rtl] .search-result,[dir=rtl] .slider{direction:rtl}[dir=rtl] .slider-actions{justify-content:flex-start}[dir=rtl] .actions,[dir=rtl] .filters,[dir=rtl] .academic-meta{flex-direction:row-reverse;justify-content:flex-end}@media (max-width:1080px){.nav-links{display:none}.header-search{margin-inline-start:auto}.department-grid{grid-template-columns:repeat(3,1fr)}.footer-columns{grid-template-columns:repeat(2,1fr)}}@media 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.full{grid-column:auto}.search-result{grid-template-columns:70px 1fr}.search-result img{width:70px;height:80px}}.partner-detail{grid-template-columns:320px 1fr;align-items:center;gap:52px;display:grid}.partner-detail>img{object-fit:contain;background:#fff;border:1px solid #e1e7e6;border-radius:24px;width:100%;max-height:260px;padding:24px}.partner-back{margin-top:22px;display:block}@media (max-width:700px){.partner-detail{grid-template-columns:1fr}.partner-detail>img{max-width:320px}}.mobile-nav{margin-inline-start:4px;display:none;position:relative}.mobile-nav summary{cursor:pointer;background:#fff;border:1px solid #10182024;border-radius:12px;align-items:center;gap:7px;padding:9px 11px;font-weight:850;list-style:none;display:flex}.mobile-nav summary::-webkit-details-marker{display:none}.hamburger{font-size:1.2rem}.mobile-nav-panel{inset-inline-end:0;width:min(330px,100vw - 28px);box-shadow:var(--shadow);background:#fff;border:1px solid #1018201f;border-radius:18px;gap:4px;padding:12px;display:grid;position:absolute;top:calc(100% + 12px)}.mobile-nav-panel>a{border-radius:10px;padding:12px 14px;font-weight:800}.mobile-nav-panel>a:hover{color:var(--pdm-cyan-dark);background:#edf8f8}.mobile-languages{border-top:1px solid #e5e9e8;gap:7px;margin-top:6px;padding:12px 8px 4px;font-size:.8rem;font-weight:800;display:flex}.mobile-languages a{padding:6px}.book-card-link{height:100%;display:block}.book-card-link .card{height:100%}.book-card{transition:transform .2s,box-shadow .2s}.book-card:hover{transform:translateY(-4px);box-shadow:0 20px 42px #1018201c}.button-disabled{opacity:.5;cursor:not-allowed}.availability-box{background:#eef8f8;border:1px solid #00a9b72e;border-radius:16px;margin-top:24px;padding:18px 20px}.author-contact{flex-wrap:wrap;gap:10px;margin-top:20px;display:flex}.author-contact a{background:#fff;border:1px solid #d7dfde;border-radius:999px;padding:9px 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