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a:after{content:"";position:absolute;left:0;bottom:0;height:2px;width:100%;background:var(--lime);transform:scaleX(0);transform-origin:left;transition:transform .4s var(--ease-out)}.nav__links a:hover:after{transform:scaleX(1)}.nav__burger{display:none;flex-direction:column;gap:5px;background:none;border:0;padding:.6rem}.nav__burger span{display:block;width:26px;height:2.5px;background:var(--on-iris);transition:transform .35s var(--ease-out),opacity .25s}.nav__burger[aria-expanded=true] span:first-child{transform:translateY(7.5px) rotate(45deg)}.nav__burger[aria-expanded=true] span:last-child{transform:translateY(-7.5px) rotate(-45deg)}.mobile-menu{display:flex;flex-direction:column;gap:.3rem;padding:.5rem var(--pad) 1.5rem;background:var(--iris);color:var(--on-iris)}.mobile-menu[hidden]{display:none}body.menu-open{overflow:hidden}.mobile-menu a{text-decoration:none;font-weight:600;font-size:1.3rem;padding:.7rem 0}.mobile-menu .btn{margin-top:.6rem;font-size:1.05rem}@media 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oklab,var(--on-iris) 12%,var(--iris))}.mentor__photo img{object-fit:cover}.mentor__name{font-size:var(--fs-h3);font-weight:700;letter-spacing:-.03em;line-height:1.05;margin-top:1.4rem}.mentor__org{color:var(--on-iris-dim);font-weight:600;margin-top:.4rem}.mentor__bio{color:var(--on-iris-dim);margin-top:.9rem;max-width:42ch;text-wrap:pretty}.mentor__links{display:flex;gap:.6rem;margin-top:1.1rem}.mentor__links a{display:inline-flex;align-items:center;justify-content:center;width:2.5rem;height:2.5rem;border-radius:var(--r-pill);border:1.5px solid color-mix(in oklab,var(--on-iris) 28%,transparent);color:var(--on-iris);transition:background-color .2s var(--ease-out),color .2s var(--ease-out),border-color .2s}.mentor__links a:hover{background:var(--lime);color:var(--ink);border-color:var(--lime)}.praktisch{background:var(--ink);color:var(--paper);padding-block:var(--section-y)}.praktisch 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28%,transparent);border-radius:var(--r-card);padding:clamp(1.5rem,4vw,2.5rem)}.need__title{font-size:var(--fs-h3);font-weight:700;letter-spacing:-.03em;margin-bottom:1.3rem}.need__list{display:grid;gap:1rem}.need__list li{position:relative;padding-left:1.7rem;color:color-mix(in oklab,var(--paper) 86%,transparent);max-width:60ch}.need__list li:before{content:"→";position:absolute;left:0;color:var(--lime);font-weight:800}.need__list strong{color:var(--paper)}.signup{background:var(--paper);padding-block:var(--section-y)}.signup__note{margin-top:1.2rem;color:var(--ink-soft);font-size:1.05rem;max-width:34ch}.form{display:grid;gap:1.4rem}.field{display:grid;gap:.5rem}.field label,.field legend{font-weight:600;font-size:1rem}.field .opt{font-weight:400;color:var(--ink-soft)}.field input,.field select,.field textarea{font:inherit;color:var(--ink);background:var(--paper);border:1.5px solid color-mix(in oklab,var(--ink) 28%,transparent);border-radius:var(--r-btn);padding:.85rem 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1.2rem;font-size:.95rem;font-weight:500}.form__alert a{font-weight:700}.form-success{border:1.5px solid var(--iris);border-radius:var(--r-card);padding:clamp(1.8rem,4vw,2.6rem);background:color-mix(in oklab,var(--iris) 8%,var(--paper))}.form-success__check{display:grid;place-items:center;width:3rem;height:3rem;border-radius:50%;background:var(--lime);color:var(--ink);font-weight:800;font-size:1.4rem;margin-bottom:1.2rem}.form-success h3{font-size:var(--fs-h3);font-weight:700;letter-spacing:-.03em;margin-bottom:.6rem}.form-success p{color:var(--ink-soft);max-width:46ch}.form-success p+p{margin-top:.7rem}.faq{background:var(--paper-dim);padding-block:var(--section-y)}.qa{border-bottom:1px solid color-mix(in oklab,var(--ink) 16%,transparent)}.qa:first-child{border-top:1px solid color-mix(in oklab,var(--ink) 16%,transparent)}.qa summary{list-style:none;cursor:pointer;padding:1.3rem 0;font-size:clamp(1.1rem,2.2vw,1.4rem);font-weight:700;letter-spacing:-.02em;display:flex;justify-content:space-between;align-items:center;gap:1rem}.qa summary::-webkit-details-marker{display:none}.qa summary:after{content:"+";font-weight:600;color:var(--iris);font-size:1.5rem;transition:transform .35s var(--ease-out)}.qa[open] summary:after{transform:rotate(45deg)}.qa p{color:var(--ink-soft);padding-bottom:1.4rem;max-width:64ch}.footer{background:var(--iris);color:var(--on-iris);padding-block:clamp(3rem,7vw,5rem)}.footer__inner{display:grid;grid-template-columns:1.2fr 1fr;gap:clamp(2rem,5vw,4rem);align-items:end}.footer__mark{display:inline-grid;place-items:center;width:2.4rem;height:2.4rem;background:var(--lime);color:var(--iris);border-radius:9px;font-weight:800;font-size:1.4rem;margin-bottom:1rem}.footer__name{font-size:clamp(1.6rem,4vw,2.4rem);font-weight:800;letter-spacing:-.03em;line-height:1}.footer__tag{color:var(--on-iris-dim);margin-top:.8rem;max-width:36ch}.footer__meta{display:grid;gap:1rem;justify-items:start}.footer__made{color:var(--on-iris-dim);font-size:.95rem}.footer__contact a{font-weight:600;text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--lime)}@media (max-width:700px){.footer__inner{grid-template-columns:1fr;align-items:start}}.app-header{background:var(--iris);color:var(--on-iris);border-bottom:2px solid var(--ink)}.app-header__inner{max-width:var(--wrap);margin-inline:auto;padding:.85rem var(--pad);display:flex;align-items:center;gap:1rem}.app-header .brand{color:var(--on-iris);margin-right:0}.app-header__right{margin-left:auto;display:flex;align-items:center;gap:1.25rem}.app-header__link{color:var(--on-iris);font-weight:600;text-decoration:none;position:relative;display:inline-flex;align-items:center;min-height:44px}.app-header__link:after{content:"";position:absolute;left:0;bottom:.55rem;height:2px;width:100%;background:var(--lime);transform:scaleX(0);transform-origin:left;transition:transform .4s var(--ease-out)}.app-header__link:hover:after{transform:scaleX(1)}.app-main{padding-block:clamp(2.75rem,9vw,5.5rem) clamp(3rem,9vw,6rem)}.auth{max-width:27rem;margin-inline:auto}.auth__title{font-size:var(--fs-h2);font-weight:800;line-height:.98;letter-spacing:-.04em;text-wrap:balance;margin-bottom:.85rem}.auth__title .serif{font-weight:400;letter-spacing:-.015em}.auth__intro{color:var(--ink-soft);font-size:var(--fs-lead);line-height:1.4;max-width:36ch;margin-bottom:clamp(1.8rem,4vw,2.4rem)}.auth__intro strong{color:var(--ink);font-weight:700}.auth__foot{margin-top:1.4rem;color:var(--ink-soft);font-size:1rem}.auth__foot a{color:var(--iris);font-weight:600;text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--lime);text-decoration-thickness:2px;display:inline-block;padding-block:.5rem}.form .btn{justify-self:start}.btn--block{width:100%}.field input:-webkit-autofill,.field input:-webkit-autofill:focus,.field input:-webkit-autofill:hover{-webkit-box-shadow:0 0 0 100px var(--paper) inset;-webkit-text-fill-color:var(--ink);caret-color:var(--ink)}.form__msg{font-weight:600;margin-top:.2rem}.form__msg--ok{color:var(--iris)}.form__msg--err{color:oklch(.5 .2 28)}.fieldgroup{border:1.5px solid color-mix(in oklab,var(--ink) 18%,transparent);border-radius:var(--r-card);padding:clamp(1.1rem,3vw,1.5rem);display:grid;gap:1.1rem}.fieldgroup legend{font-weight:700;padding-inline:.5rem;letter-spacing:-.01em}.account{max-width:46rem;margin-inline:auto}.account__title{font-size:var(--fs-h2);font-weight:800;line-height:1;letter-spacing:-.04em;margin-bottom:clamp(2rem,5vw,3rem);text-wrap:balance}.account__section+.account__section{margin-top:clamp(2.5rem,6vw,3.5rem)}.account__h{font-size:var(--fs-h3);font-weight:700;letter-spacing:-.03em;margin-bottom:1.1rem}.account__foot{margin-top:clamp(2.5rem,6vw,3.5rem);padding-top:1.6rem;border-top:1px solid color-mix(in oklab,var(--ink) 16%,transparent)}.account__empty{color:var(--ink-soft)}.courselist{border-top:1px solid color-mix(in oklab,var(--ink) 16%,transparent)}.courselist a{display:flex;align-items:baseline;gap:1rem;justify-content:space-between;padding:1.15rem .2rem;text-decoration:none;color:var(--ink);border-bottom:1px solid color-mix(in oklab,var(--ink) 16%,transparent);font-size:clamp(1.2rem,2.4vw,1.55rem);font-weight:700;letter-spacing:-.02em;transition:color .2s 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h1{font-size:clamp(2rem,5vw,3.2rem);font-weight:800;letter-spacing:-.04em;line-height:1;text-wrap:balance;margin-bottom:1.1rem}.course-body h2{font-size:var(--fs-h3);font-weight:700;letter-spacing:-.03em;margin:2.2rem 0 .8rem}.course-body p{color:var(--ink-soft);max-width:68ch;margin-bottom:1rem}.course-body a:not(.btn){color:var(--iris);font-weight:600;text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--lime);text-decoration-thickness:2px}.lessonlist{border-top:1px solid color-mix(in oklab,var(--ink) 16%,transparent);margin-top:1.2rem}.lessonlist a{display:flex;align-items:baseline;gap:.9rem;justify-content:space-between;padding:1rem .2rem;text-decoration:none;color:var(--ink);border-bottom:1px solid color-mix(in oklab,var(--ink) 16%,transparent);font-weight:600;font-size:1.1rem;transition:color .2s var(--ease-out)}.lessonlist a:after{content:"→";color:var(--iris);font-weight:800;transition:transform .3s var(--ease-out-expo)}.lessonlist 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