:root{font-family:"Avenir Next",Avenir,"Trebuchet MS",Arial,sans-serif;color:#191917;background:#fff;font-synthesis:none;--blue:#6699ec;--line:#d2ddea;--sidebar:300px}*{box-sizing:border-box}body{margin:0}a{color:inherit;text-decoration:none}button,input,summary{font:inherit}button,a,summary{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible,[tabindex="0"]:focus-visible{outline:2px solid var(--blue);outline-offset:4px}button:disabled{cursor:default;opacity:.3}[hidden]{display:none!important}.skip{position:fixed;top:8px;left:10px;transform:translateY(-160%);padding:12px;background:#315eaa;color:white;z-index:100}.skip:focus{transform:none}.sidebar{position:fixed;inset:0 auto 0 0;width:var(--sidebar);background:#f4f4f4;border-right:5px solid #e5e8ed;padding:25px 21px 35px;overflow-y:auto;z-index:20}.ecoreps-brand{display:block;width:max-content;color:#2e81c9;font-size:31px;line-height:1;font-weight:800;letter-spacing:-1.7px;margin:4px 0 25px}.sidebar-home{display:block;color:#5f92df;font-size:14px;font-weight:700;margin:0 0 34px}.sidebar-home:hover,.ecoreps-brand:hover{text-decoration:underline}.contact-block h2{display:flex;align-items:center;gap:7px;font-size:18px;line-height:1.3;margin:0 0 17px;font-weight:750}.contact-block h2:nth-of-type(2){margin-top:34px}.info-icon{display:inline-grid;place-items:center;width:18px;height:18px;border-radius:50%;background:#6b9dea;color:white;font:bold 13px/1 Arial,sans-serif}.contact-block>a{display:flex;align-items:center;gap:10px;font-family:Arial,sans-serif;font-size:15px;line-height:1.4;margin:0 0 14px}.contact-block>a:hover{text-decoration:underline}.contact-icon{display:inline-grid;place-items:center;width:20px;color:#6699ec;font-size:20px;line-height:1}.mail-icon{font-size:21px}.learning-label{display:inline-block;background:#e8e8e8;border-radius:25px;padding:4px 15px;font-size:15px;line-height:1.35;font-weight:750}.sidebar-rule{height:1px;background:var(--line)}.contact-rule{margin:22px 0 20px}.chapter-rule{margin:24px 0 18px}.sidebar-course-title{font-size:19px;line-height:1.35;font-weight:750;letter-spacing:-.35px;margin:0 0 15px}.sidebar-course-menu{margin:0 0 18px}.sidebar-course-menu a{display:block;color:#6699ec;font-size:15px;line-height:1.45;font-weight:700;padding:3px 2px}.sidebar-course-menu a:hover{text-decoration:underline}.sidebar-course-menu a[aria-current="page"]{color:#3977c9}.sidebar-heading{font-size:19px;line-height:1.4;font-weight:750;letter-spacing:-.4px;margin:0 0 20px}.nav-group{margin:0 0 8px}.nav-group>summary{font-size:14px;font-weight:650;line-height:1.45;list-style:none;display:flex;align-items:baseline;gap:9px;cursor:pointer;padding:1px 0 2px}.nav-group>summary::-webkit-details-marker{display:none}.nav-group>summary:before{content:"";width:7px;height:7px;border-right:2px solid var(--blue);border-bottom:2px solid var(--blue);transform:rotate(45deg);position:relative;top:-3px;flex-shrink:0;margin-left:4px}.nav-group[open]>summary:before{transform:rotate(225deg);top:1px}.nav-children{padding-left:26px}.chapter-link,.unavailable-chapter{font-size:14px;display:block;line-height:1.45;padding:3px 3px;min-height:25px}.nav-children>.chapter-link,.nav-children>.unavailable-chapter{padding-left:20px}.chapter-link:hover{background:#e8edf5}.chapter-link[aria-current="page"]{background:#e9edf3;font-weight:650}.unavailable-chapter{color:#8c9197}.chapter-number{white-space:nowrap}.sidebar-toggle{position:fixed;left:var(--sidebar);top:20px;z-index:30;width:39px;height:39px;display:grid;place-items:center;background:#769ee4;color:#fff;border:0;border-radius:0 4px 4px 0;box-shadow:2px 2px 7px #1c315026;padding:9px}.sidebar-toggle svg{width:20px;height:20px}.shell{margin-left:var(--sidebar)}main{max-width:1270px;margin:0 auto;padding:28px 55px 60px;position:relative;isolation:isolate}main:before{content:"";position:absolute;top:0;right:16%;width:265px;height:235px;background:#f0f7fd;border-radius:27% 64% 30% 47%;transform:rotate(18deg);z-index:-1;pointer-events:none}.breadcrumb{display:flex;align-items:center;gap:18px;color:#a0a3a6;font-size:12px;line-height:24px;margin-bottom:19px}.breadcrumb-arrow{font-family:Arial,sans-serif;font-size:24px;color:#a5aeb8;font-weight:400}.breadcrumb a{color:#83a4da;font-weight:650}.page-title{display:flex;justify-content:space-between;align-items:center;gap:24px;border-bottom:1px solid var(--line);padding-bottom:17px;margin-bottom:15px}.page-title h1{font-size:29px;font-weight:700;letter-spacing:-1.1px;line-height:1.3;margin:0}.search-wrap{width:200px;position:relative;flex-shrink:0}.search{display:flex;align-items:center;border-bottom:2px solid #e2e4e6;gap:7px}.search input{border:0;width:100%;min-width:0;background:transparent;font-size:14px;line-height:1.6;padding:4px 2px;color:#4c5259;outline-offset:1px}.search input::placeholder{color:#83888e;opacity:1}.search svg{width:17px;height:17px;flex-shrink:0;color:#80858a;margin-right:4px}.search-results{position:absolute;right:0;top:37px;width:270px;background:white;border:1px solid #d7e0ed;box-shadow:0 8px 24px #253b5820;z-index:40;padding:7px}.search-results a,.search-empty{display:block;padding:10px;font-size:14px;line-height:1.4}.search-results a:hover{background:#eff4fb;color:#497dca}.search-empty{color:#8993a0}.reader-header{display:flex;justify-content:space-between;align-items:flex-start;gap:15px;margin-bottom:36px}.chapter-heading{display:flex;align-items:baseline;gap:10px}.bookmark{width:17px;height:23px;flex-shrink:0;color:#a2a5a7;align-self:flex-start;margin-top:2px}.reader-header h2{font-size:22px;letter-spacing:-.6px;line-height:1.45;margin:0;font-weight:700;position:relative;padding-bottom:13px}.reader-header h2:after{content:"";position:absolute;bottom:0;left:0;width:75px;height:3px;background:#709fed;border-radius:2px}.zoom{display:flex;flex-shrink:0;align-items:center;opacity:.75;padding-top:1px}.zoom button{border:0;background:transparent;padding:2px 6px;min-height:28px;color:#8c979f}.zoom button:hover{color:#457ccb;background:#eef4fc}.zoom button:first-child,.zoom button:last-child{font-size:19px;width:26px}.zoom button:nth-child(2){font-size:11px;min-width:47px;white-space:nowrap}.reader-scroll{overflow-x:auto;overscroll-behavior-x:contain;scrollbar-color:#b8c8df #f1f5fa;scrollbar-width:thin}.chapter-content{width:100%;margin:0 auto}.image-part{position:relative;width:100%;line-height:0}.image-part img{display:block;width:100%;height:auto}.video-overlay{position:absolute;border:0;padding:0;background:transparent;cursor:pointer;display:block}.video-overlay:hover{background:#ffffff24}.video-overlay:focus-visible{outline:2px solid #205ab6;outline-offset:1px}.chapter-pagination{display:flex;justify-content:flex-end;gap:20px;border-top:1px solid var(--line);padding-top:32px;margin-top:15px}.pagination-link{display:flex;align-items:center;justify-content:center;gap:7px;border:2px solid #75a1ef;border-radius:5px;padding:9px 14px;min-width:172px;color:#7297d9;font-size:14px;line-height:1.3;white-space:nowrap}.pagination-link>span{font-size:22px;line-height:16px;font-family:Arial,sans-serif}.pagination-link:hover{background:#eef5ff;color:#4c7dce}.sidebar-backdrop{display:none}body.sidebar-collapsed .sidebar{transform:translateX(-100%)}body.sidebar-collapsed .sidebar-toggle{left:0}body.sidebar-collapsed .sidebar-toggle svg{transform:rotate(180deg)}body.sidebar-collapsed .shell{margin-left:0}noscript p{padding:30px}
@media(min-width:1500px){:root{--sidebar:320px}.nav-group>summary,.chapter-link,.unavailable-chapter{font-size:16px}.sidebar-heading{font-size:21px}.reader-header h2{font-size:24px}.zoom button:nth-child(2){font-size:12px}}
@media(max-width:1050px){:root{--sidebar:260px}.sidebar{padding:25px 19px}main{padding-left:42px;padding-right:30px}.page-title h1{font-size:26px}.search-wrap{width:150px}.breadcrumb{gap:12px}.reader-header h2{font-size:21px}.zoom button{padding:2px 4px}.zoom button:first-child,.zoom button:last-child{width:22px}}
@media(max-width:760px){.sidebar{width:275px;transform:translateX(-100%);border-right:1px solid #e0e5ed}.sidebar-toggle{left:0;top:14px;width:34px;height:35px}.sidebar-toggle svg{transform:rotate(180deg)}.shell{margin-left:0}body.sidebar-open .sidebar{transform:translateX(0)}body.sidebar-open .sidebar-toggle{left:275px}body.sidebar-open .sidebar-toggle svg{transform:none}body.sidebar-open .sidebar-backdrop{display:block;position:fixed;inset:0;background:#25354a40;z-index:15}main{padding:23px 20px 35px}main:before{width:175px;height:185px;right:12%;opacity:.8}.breadcrumb{font-size:11px;gap:10px;padding-left:30px;margin-bottom:27px;white-space:nowrap}.page-title{display:block;margin-bottom:17px;padding-bottom:16px}.page-title h1{font-size:28px;letter-spacing:-.8px}.search-wrap{width:100%;margin-top:22px}.search input{font-size:14px}.search-results{width:100%}.reader-header{margin-bottom:30px;gap:8px}.reader-header h2{font-size:21px;line-height:1.3}.chapter-heading{gap:7px}.bookmark{width:15px;height:20px}.reader-header h2:after{width:68px}.zoom button:nth-child(2){font-size:10px;min-width:39px}.zoom button:first-child,.zoom button:last-child{width:22px}.zoom{padding-top:0}.chapter-pagination{gap:10px;padding-top:25px;justify-content:space-between}.pagination-link{font-size:12px;min-width:0;padding:9px 10px;border-width:1.5px;gap:4px}.reader-scroll{padding-bottom:6px}body.sidebar-collapsed .shell{margin-left:0}}
@media(max-width:390px){main{padding-left:14px;padding-right:14px}.breadcrumb{gap:7px;font-size:10px}.page-title h1{font-size:26px}.reader-header h2{font-size:19px}.zoom button:nth-child(2){min-width:35px}.zoom button:first-child,.zoom button:last-child{width:20px}}
@media(prefers-reduced-motion:no-preference){.sidebar,.shell,.sidebar-toggle{transition:transform .18s,margin-left .18s,left .18s}.chapter-link,.pagination-link{transition:background .15s}}
@media print{.sidebar,.sidebar-toggle,.breadcrumb,.page-title,.zoom,.chapter-pagination{display:none}.shell{margin:0}main{padding:0;max-width:none}main:before{display:none}.reader-scroll{overflow:visible}.chapter-content{width:100%!important}.image-part{break-inside:avoid}.reader-header{margin-bottom:20px}.video-overlay{display:none}}

/* Kursbereich und Kursübersichten */
body:not([data-view="reader"]) #sidebar,body:not([data-view="reader"]) #sidebar-toggle{display:none}
body[data-view="reader"] #hub-sidebar{display:none}
.sidebar-home{display:block;color:#5f92df;font-size:14px;font-weight:700;margin:0 0 34px}
.sidebar-home:hover{text-decoration:underline}
.hub-sidebar{padding:39px 26px}
.hub-brand{display:block;color:#2e81c9;font-size:35px;font-weight:800;letter-spacing:-2px;margin-bottom:36px}
.hub-back{display:block;color:#6699ec;font-weight:700;font-size:16px;margin-bottom:40px}
.hub-sidebar-rule{height:1px;background:var(--line);margin-bottom:26px}
.hub-sidebar h2{font-size:20px;margin:0 0 14px}
.hub-sidebar nav a{display:block;color:#6699ec;font-weight:700;font-size:17px;padding:8px 0}
.hub-sidebar nav a:hover,.hub-back:hover{text-decoration:underline}
.hub-view{padding:8px 0 90px}
.hub-view .breadcrumb{margin-bottom:25px}
.hub-title{font-size:35px;line-height:1.22;letter-spacing:-1px;margin:0 0 19px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.hub-section-title{font-size:28px;line-height:1.25;letter-spacing:-.55px;margin:0 0 33px;font-weight:750}
.hub-section-title:after{content:"";display:block;width:98px;height:4px;border-radius:3px;background:#73a1ef;margin-top:12px}
.course-cards{display:grid;grid-template-columns:repeat(2,minmax(250px,390px));gap:40px}
.course-card{display:flex;flex-direction:column;border:2px solid #d2ddeb;border-radius:14px;overflow:hidden;min-height:430px;background:white;transition:box-shadow .15s,transform .15s}
.course-card:hover,.topic-card:hover{box-shadow:0 7px 22px #2449741c;transform:translateY(-2px)}
.course-card:focus-visible,.topic-card:focus-visible{outline-offset:4px}
.course-art{height:150px;display:block;overflow:hidden}
.course-art svg{height:100%;width:100%;display:block}
.fima-art{background:linear-gradient(105deg,#fa0909 8%,#fd7159 90%)}
.vwl-art{background:linear-gradient(120deg,#5282c7,#75a8ee)}
.course-card-body{display:flex;flex:1;flex-direction:column;padding:18px 22px 25px}
.course-card-body strong{font-size:28px;line-height:1.3}
.course-card-rule{height:2px;background:#d2ddea;margin:35px 0 27px}
.course-card-action{color:#6899e8;font-size:17px;margin-top:auto}
.course-card-action span{font-size:25px;vertical-align:-1px;margin-left:4px}
.topic-cards{display:grid;grid-template-columns:repeat(3,minmax(200px,1fr));gap:28px 30px;max-width:1140px}
.topic-card{border:2px solid #d2ddeb;border-radius:14px;padding:19px 18px;min-height:150px;background:white;transition:box-shadow .15s,transform .15s}
.topic-card-title{display:block;color:#6899e8;font-size:22px;font-weight:700;line-height:1.3;padding-bottom:20px;border-bottom:1px solid #d2ddea}
.topic-empty{border:2px solid #d2ddeb;border-radius:14px;padding:28px;max-width:760px}
.topic-empty p{font-size:18px;margin:0 0 25px}
.outlined-link{display:inline-block;border:2px solid #75a1ef;border-radius:5px;padding:10px 14px;color:#6b96dc;font-size:15px}
.outlined-link:hover{background:#eef5ff}
@media(min-width:1500px){.hub-sidebar{padding:40px 30px}}
@media(max-width:1050px){.course-cards{gap:22px}.topic-cards{grid-template-columns:repeat(2,minmax(200px,1fr))}.hub-title{font-size:30px}}
@media(max-width:760px){body:not([data-view="reader"]) .shell{margin-left:0}.hub-sidebar{display:none}.hub-view{padding-top:3px}.hub-view .breadcrumb{padding-left:0}.hub-title{font-size:29px}.hub-section-title{font-size:24px;margin-bottom:25px}.course-cards{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.course-card{min-height:320px}.course-art{height:105px}.course-card-body{padding:13px}.course-card-body strong{font-size:23px}.course-card-rule{margin:23px 0 18px}.course-card-action{font-size:14px}.topic-cards{grid-template-columns:1fr;gap:14px}.topic-card{min-height:105px}.topic-card-title{font-size:19px;padding-bottom:13px}}
@media(max-width:440px){.course-cards{grid-template-columns:1fr}.course-card{min-height:280px}.course-art{height:120px}}
@media print{.hub-sidebar{display:none}.hub-view{padding:0}}

/* Tutorien: einzelne, über Kapitelwechsel erhaltene Lösungsbereiche */
.solution-block{margin:0 0 20px;padding:0 0 10px}
.learning-label:hover{background:#dce8f8;color:#366fba}
.solution-toggle{display:inline-flex;align-items:center;justify-content:center;margin:0 0 0 24px;padding:7px 18px;border:1px solid #aeb5bd;border-radius:28px;background:#f2f3f4;color:#3d454d;font-size:15px;line-height:1.25;min-height:34px}
.solution-toggle[aria-expanded="true"]{background:#3f80ca;border-color:#3f80ca;color:#fff}
.solution-toggle:hover{filter:brightness(.96)}
.solution-body{margin:5px 0 0}
.solution-body img{max-width:none}
.solution-unavailable{margin:8px 0 10px 24px;padding:12px 16px;border-left:4px solid #cbd6e4;background:#f4f6f8;color:#4b5969;font-size:14px;line-height:1.5}
.solution-block:has(.solution-toggle[aria-expanded="true"]){border-bottom:1px solid #d7e1ed;padding-bottom:18px}
@media(max-width:760px){.solution-toggle{margin-left:7px;font-size:13px;padding:7px 12px}}
@media print{.solution-toggle{display:none}.solution-body{display:block!important}}

/* Ecoreps-nahe Desktop-Proportionen und Typografie */
:root{font-family:"Open Sans",OpenSans,Arial,Helvetica,sans-serif;--sidebar:320px}
body{font-size:14px;line-height:1.5;font-weight:400}
.sidebar{padding:25px 24px 35px;overscroll-behavior-y:contain;overscroll-behavior-x:none}
main{margin:0;max-width:1270px;padding:28px 55px 60px}
.ecoreps-brand,.contact-block h2,.learning-label,.sidebar-course-title,.sidebar-heading,.page-title h1,.reader-header h2,.hub-brand,.hub-sidebar h2,.hub-title,.hub-section-title,.course-card-body strong,.topic-card-title{font-family:Gilroy,"Avenir Next",Avenir,Arial,sans-serif}
.ecoreps-brand{font-weight:500;letter-spacing:-.6px}
.sidebar-home,.sidebar-course-menu a,.hub-back,.hub-sidebar nav a{font-weight:600}
.contact-block h2,.learning-label,.sidebar-course-title,.sidebar-heading{font-weight:500}
.nav-group>summary,.chapter-link[aria-current="page"],.breadcrumb a{font-weight:500}
.page-title h1,.reader-header h2,.hub-title,.hub-section-title,.course-card-body strong,.topic-card-title{font-weight:500}
.nav-group>summary,.chapter-link,.unavailable-chapter{font-size:14px}
.sidebar-heading{font-size:19px}
.reader-header h2{font-size:22px}
@media(max-width:1050px){:root{--sidebar:280px}.sidebar{padding:25px 20px}main{padding-left:42px;padding-right:30px}}
@media(max-width:760px){.sidebar{width:275px}main{padding:23px 20px 35px}}