@import url('fonts.css');
:root{--ink:#142b3b;--muted:#70808a;--teal:#0da999;--teal-dark:#087f76;--mint:#e9f8f2;--line:#e4ebe8;--paper:#fff;--bg:#fafcfb;--sidebar:#f3f6f4;--shadow:0 18px 60px #163d3020;--font:'DM Sans','Segoe UI',sans-serif;--heading:'Manrope','Segoe UI',sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:40px}body{margin:0;color:var(--ink);font-family:var(--font);font-size:15px;line-height:1.6;background:var(--bg);-webkit-font-smoothing:antialiased}button,input,textarea,select{font:inherit}button,a,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:wait;opacity:.6}a{color:inherit;text-decoration:none}button{color:inherit}img,svg{vertical-align:middle}button{border:0;background:none}h1,h2,h3,h4,p{margin:0}h1,h2,h3{font-family:var(--heading);line-height:1.2}button,input,textarea,select,a,summary{outline-offset:5px}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #19b7a4}textarea:focus,input:focus,select:focus{outline:2px solid #19b7a45e;outline-offset:2px}[hidden]{display:none!important}.icon{width:21px;height:21px;flex-shrink:0;fill:none}.wrap{max-width:1240px;width:calc(100% - 104px);margin:auto}.brand{display:inline-flex;align-items:center;gap:10px;font-family:var(--heading);font-size:29px;font-weight:800;letter-spacing:-1.5px;line-height:1}.brand-dot{color:var(--teal)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:11px;border:1px solid transparent;border-radius:12px;padding:16px 23px;font-size:14px;font-weight:650;line-height:1.4;transition:transform .18s,background .18s,box-shadow .18s}.btn:hover{transform:translateY(-2px)}.btn-primary{background:var(--teal);color:white;box-shadow:0 5px 12px #0caa9820}.btn-primary:hover{background:#079c8d;box-shadow:0 6px 18px #0caa9830}.btn-dark{color:white;background:var(--ink)}.btn-outline{border-color:#d7e1dc;background:#ffffff70}.btn-outline:hover{background:#edf6f1}.btn-soft{background:#eaf7f2;color:var(--teal-dark)}.btn-small{padding:11px 17px;font-size:13px}.eyebrow{font-size:10px;font-weight:750;letter-spacing:1.8px;display:inline-flex;gap:9px;align-items:center;color:var(--teal-dark);line-height:1.5}.live-dot{width:7px;height:7px;border-radius:50%;background:var(--teal);box-shadow:0 0 0 4px #13b59f10}.skip-link{position:fixed;left:20px;top:-100px;padding:10px 20px;background:var(--ink);color:white;z-index:1000;border-radius:8px}.skip-link:focus{top:15px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.site-header{height:100px;display:flex;align-items:center;justify-content:space-between;gap:25px}.desktop-nav{display:flex;gap:30px;font-size:13px;font-weight:550;color:#5c6d75}.desktop-nav a:hover{color:var(--teal)}.landing{background:#fafcfb}.hero{display:grid;grid-template-columns:1.02fr 1fr;gap:65px;align-items:center;min-height:690px;padding:51px 0 75px}.hero-copy{position:relative;z-index:2}.hero h1{font-size:clamp(50px,5.1vw,71px);font-weight:800;letter-spacing:-3.8px;line-height:1.16;margin:24px 0 27px}.aha{position:relative;display:inline-block;color:var(--teal)}.aha svg{position:absolute;left:0;bottom:-16px;width:100%;height:24px;fill:none;stroke:#15b69d;stroke-width:2.7;stroke-linecap:round;opacity:.5}.hero-description{max-width:470px;font-size:16px;line-height:1.8;color:#6b7c83;margin-top:32px}.hero-actions{display:flex;gap:12px;margin-top:31px;white-space:nowrap}.hero-actions .btn{padding:16px 19px;font-size:13px}.hero-reassurance{display:flex;gap:22px;margin-top:22px;color:#7c8a90;font-size:11px}.hero-reassurance>span{display:flex;align-items:center;gap:6px}.hero-reassurance .icon{width:15px;height:15px;color:#64a592}.hero-visual{position:relative;padding:18px 0 26px}.hero-visual:before{content:'';position:absolute;inset:-120px -85px -50px -60px;background:radial-gradient(ellipse,#dff5e8b5,transparent 68%);z-index:0;pointer-events:none}.chat-preview{position:relative;background:#fff;border:1px solid #dce7e1;border-radius:19px;box-shadow:0 25px 65px #1a4d3e10,0 6px 16px #1a4d3e08;transform:rotate(-1deg);overflow:hidden}.preview-top{display:flex;align-items:center;justify-content:space-between;padding:20px 24px 15px;gap:15px}.preview-identity{display:flex;gap:10px;align-items:center}.preview-identity strong{display:block;font-size:13px}.preview-identity small{font-size:10px;display:block;color:#829088;margin-top:2px}.demo-badge,.badge{font-size:9px;font-weight:700;letter-spacing:.6px;color:#819189;border:1px solid #e0e9e4;padding:3px 7px;border-radius:5px;background:#f8faf9}.preview-context{display:flex;align-items:center;gap:7px;font-size:10px;color:#75867d;background:#f9fbf9;border-block:1px solid #edf2ee;padding:9px 24px}.preview-context .icon{width:14px;height:14px;color:#4d8f7a}.context-topic{margin-left:auto;color:#668778;background:#eaf4ee;border-radius:5px;padding:2px 7px}.preview-body{padding:22px 25px 18px;font-size:12px}.preview-user{margin:0 0 23px 55px;background:#eef4f1;border-radius:12px 12px 3px 12px;padding:12px 14px;position:relative}.preview-user>span{position:absolute;right:-12px;top:-10px;color:#91a297;font-size:8px;background:white;border:1px solid #e5ece7;border-radius:50%;width:23px;height:23px;display:grid;place-items:center}.preview-tutor{display:flex;gap:10px;line-height:1.7}.mini-avatar{padding-top:1px;flex-shrink:0}.preview-tutor strong{font-size:12px;font-weight:650}.wave{color:#e8b95c}.preview-tutor p{color:#74827a;margin-top:7px;font-size:11.5px}.preview-tutor b{font-weight:550;color:#4f6559}.preview-equation{margin:16px 2px 15px 35px;background:#f6faf7;border:1px solid #e2eee5;border-radius:11px;padding:11px 15px;font-family:var(--heading);font-size:17px;letter-spacing:.4px}.preview-equation>div{display:grid;grid-template-columns:1fr 22px 35px 30px;align-items:center;padding:5px 7px}.preview-equation>div+div{border-top:1px dashed #dce9e0;color:var(--teal-dark);margin-top:4px;padding-top:9px}.preview-equation small{text-align:right;color:#8b9b90;font-size:11px}.preview-equation .icon{width:16px;height:16px;color:var(--teal)}.preview-question{margin-left:35px;color:#6a7e71;font-size:11.5px;line-height:1.8}.preview-question b{font-weight:550;color:#3a5946}.preview-answers{display:flex;gap:7px;margin:13px 0 0 35px}.preview-answers button{padding:7px 11px;border:1px solid #d4e9dc;border-radius:7px;font-size:10px;color:#29846b;background:#fff;transition:background .15s}.preview-answers button:hover,.preview-answers .is-active{background:#e1f7eb}.preview-feedback{font-size:11px;padding:12px;margin:12px 0 0 35px;background:#ecf8f2;border-radius:8px;color:var(--teal-dark)}.preview-input{display:flex;align-items:center;margin:0 22px 20px;padding:10px 10px 10px 13px;gap:9px;border:1px solid #e5ebe7;border-radius:10px;color:#a0ada4;font-size:10px}.preview-input>.icon{width:15px;height:15px}.preview-send{display:grid;place-items:center;margin-left:auto;width:30px;height:29px;border-radius:8px;background:var(--teal);color:#fff}.preview-send .icon{width:17px}.float-label{position:absolute;z-index:3;display:flex;gap:9px;align-items:center;font-size:11px;font-weight:550}.float-top{top:-24px;right:26px;transform:rotate(6deg);color:#668772}.float-top>.icon{width:19px;color:#bd9c4f}.float-top>svg:last-child{position:absolute;right:-46px;top:3px;width:65px;height:50px;fill:none;stroke:#92b8a0;stroke-width:1.5}.float-bottom{bottom:3px;left:28px;padding:12px 17px;background:#fff;border:1px solid #e1eae3;border-radius:12px;box-shadow:0 6px 20px #26533a08;transform:rotate(2deg)}.float-bottom small{display:block;font-size:9px;font-weight:400;color:#8c9b90;margin-top:3px}.tiny-star{font-size:25px;color:#d3a84f;margin-right:2px}.math-doodle{position:absolute;color:#8cb9a188;z-index:0;font-family:Georgia,serif}.doodle-one{top:-20px;left:-40px;font-size:28px;transform:rotate(-14deg)}.doodle-two{right:-35px;bottom:95px;font-size:38px;transform:rotate(14deg)}.subject-strip{display:flex;align-items:center;justify-content:space-between;gap:18px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:29px 0;margin-top:15px}.subject-strip p{font-size:8px;letter-spacing:1px;color:#8b9890;line-height:1.8;flex-shrink:0}.subject-strip strong{color:#6a7b70;font-weight:650}.subject-strip a{font-family:var(--heading);font-size:13px;font-weight:650;display:flex;align-items:center;gap:9px;color:#62796b}.subject-strip a:hover{color:var(--teal)}.subject-strip .icon{width:20px;height:20px;color:#789887}.section-space{padding-top:105px;padding-bottom:100px}.section-heading{text-align:center}.section-heading h2{font-size:40px;letter-spacing:-1.8px;font-weight:750;line-height:1.3;margin-top:15px}.section-heading h2 span{color:var(--teal)}.section-heading>p{font-size:14px;color:var(--muted);margin-top:17px;line-height:1.8}.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:40px;margin-top:50px}.step-illustration{height:170px;position:relative;display:flex;justify-content:center;align-items:center;border-radius:16px;margin-bottom:26px;overflow:hidden}.illustration-upload{background:#edf5ef}.paper-note{width:178px;padding:20px;background:white;border-radius:7px;box-shadow:0 8px 20px #29452f0b;transform:rotate(-7deg)}.paper-note span{font-size:8px;display:block;color:#9aa79b}.paper-note b{display:block;font-family:var(--heading);font-size:20px;font-weight:550;margin:10px 0}.paper-note i{display:block;width:86%;height:4px;background:#edf1ed;margin:5px 0;border-radius:5px}.paper-note i:last-child{width:60%}.round-icon{display:grid;place-items:center;position:absolute;right:55px;bottom:22px;width:46px;height:46px;border-radius:14px;background:var(--teal);color:white;transform:rotate(8deg);box-shadow:0 5px 14px #138c7040}.illustration-chat{background:#f1f0f8;flex-direction:column;padding:22px}.small-chat{background:white;border-radius:10px;padding:14px;display:flex;align-items:flex-start;gap:9px;font-size:9px;line-height:1.8;width:100%;max-width:260px;box-shadow:0 5px 20px #22224505;transform:rotate(-2deg)}.small-chat b{font-weight:550}.mini-chat-answer{font-size:9px;background:#e6e2f1;padding:8px 14px;margin-top:10px;margin-left:55px;border-radius:9px 9px 2px 9px;transform:rotate(2deg)}.illustration-success{background:#fbf3e5;gap:13px}.success-check{width:46px;height:46px;border-radius:50%;background:#d6efdb;display:grid;place-items:center;color:#4d9a65}.illustration-success>span{font-size:38px;font-family:var(--heading);font-weight:650;letter-spacing:-1px;transform:rotate(-4deg)}.success-sparkle{position:absolute;right:60px;top:30px;font-size:25px;color:#d0a44c}.step-number{font-size:9px;font-weight:700;letter-spacing:1.2px;color:#88a08f}.step-card h3{font-size:20px;letter-spacing:-.5px;margin:12px 0}.step-card>p{color:var(--muted);font-size:13px;line-height:1.9;max-width:320px}.learning-section{background:#f0f6f2;border-block:1px solid #e5eee7}.learning-grid{display:grid;grid-template-columns:1fr 1fr;gap:100px;align-items:center}.learning-copy h2{font-size:39px;letter-spacing:-1.7px;font-weight:750;line-height:1.3;margin:15px 0 19px}.learning-copy h2 span{color:var(--teal)}.learning-copy>p{font-size:14px;line-height:1.9;color:#74857a;max-width:410px}.feature-list{list-style:none;padding:0;margin:29px 0 24px;display:flex;flex-direction:column;gap:22px}.feature-list>li{display:flex;gap:13px;align-items:flex-start}.feature-list .icon{color:var(--teal);width:20px;height:20px;margin-top:2px}.feature-list strong{font-size:13px;font-weight:600;display:block}.feature-list span{display:block;color:#839087;font-size:12px;margin-top:3px}.text-link{display:inline-flex;gap:9px;align-items:center;color:var(--teal-dark);font-size:13px;font-weight:650}.text-link:hover{text-decoration:underline}.learning-sample{padding:29px;background:#fff;border:1px solid #dfe9e2;border-radius:18px;box-shadow:0 15px 50px #264e3508;transform:rotate(1deg)}.sample-heading{display:flex;align-items:center;gap:9px;font-size:12px;font-weight:550;padding-bottom:19px;border-bottom:1px solid #edf1ed}.sample-heading>.icon{color:#6e8a78;width:17px}.sample-heading .badge{margin-left:auto;font-size:7px}.sample-subjects{display:flex;gap:7px;margin:23px 0}.subject-tag{display:inline-flex;align-items:center;gap:5px;border-radius:7px;padding:6px 8px;font-size:9px}.subject-tag>.icon{width:13px;height:13px}.teal{background:#e3f5ed;color:#159e8b}.lavender{background:#efedf9;color:#9380bd}.peach{background:#fff0df;color:#cb975b}.blue{background:#eaf2fd;color:#7b9cc7}.learning-sample h3{font-size:19px;margin-bottom:20px;letter-spacing:-.4px}.sample-task{display:flex;gap:12px;align-items:center;border:1px solid #e6ede7;border-radius:10px;padding:15px;margin-top:10px}.sample-task>div{flex:1}.sample-task strong{font-size:11px;font-weight:550;display:block}.sample-task small{color:#97a399;font-size:9px}.sample-task>.icon{width:14px;height:14px;color:#b3bfb6}.sample-tick,.sample-box{width:19px;height:19px;border:1px solid #c8ddd0;border-radius:5px;display:grid;place-items:center;flex-shrink:0}.sample-tick{background:#e4f6e9;color:#44a16e;border-color:#e4f6e9}.sample-tick .icon{width:13px;height:13px}.sample-note{background:#fff9ed;display:flex;gap:10px;align-items:center;padding:14px;margin-top:22px;border-radius:9px}.sample-note .icon{color:#cba655;width:19px}.sample-note p{font-size:9px;color:#a89569;line-height:1.8}.sample-note strong{font-weight:550;color:#9c8557}.sample-footer{font-size:8px;color:#9aaba0;text-align:center;margin-top:20px}.faq-section{max-width:850px}.faq-list{margin-top:40px}.faq-list details{border-bottom:1px solid var(--line);padding:21px 0}.faq-list summary{display:flex;align-items:center;justify-content:space-between;gap:20px;cursor:pointer;font-weight:550;font-size:14px;list-style:none}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary>.icon{width:18px;height:18px;color:#89a292;transition:transform .2s}.faq-list details[open] summary>.icon{transform:rotate(45deg)}.faq-list details>p{font-size:13px;line-height:1.9;color:var(--muted);padding-top:17px;max-width:720px}.final-cta{padding:65px 40px;text-align:center;background:#e8f5ed;border:1px solid #dceee2;border-radius:24px;position:relative;overflow:hidden;margin-bottom:70px}.final-cta h2{font-size:35px;letter-spacing:-1.3px;font-weight:750;line-height:1.35;margin:16px 0 24px}.final-cta small{display:block;font-size:10px;color:#7c9a87;margin-top:15px}.cta-sparkle{position:absolute;left:10%;top:80px;font-size:65px;color:#89c0a2;transform:rotate(12deg)}.cta-doodle{position:absolute;right:8%;bottom:60px;font-size:28px;color:#8fbba1;font-family:Georgia,serif;font-style:italic;transform:rotate(-12deg)}.site-footer{display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--line);padding-block:28px 35px;gap:20px}.site-footer .brand{font-size:22px;gap:7px}.site-footer .brand img{width:28px;height:28px}.site-footer p{font-size:12px;color:#8b9b90}.site-footer>span{font-size:10px;color:#9caaa1}
/* Lernraum */
.app-body{height:100dvh;overflow:hidden;background:#fff;font-size:14px}.sidebar{position:fixed;inset:0 auto 0 0;width:244px;background:var(--sidebar);border-right:1px solid #e3eae5;padding:29px 18px 0;display:flex;flex-direction:column;z-index:50}.sidebar-brand{display:flex;align-items:center;justify-content:space-between;padding:0 11px;margin-bottom:31px}.sidebar-brand .brand{font-size:28px}.sidebar-brand .brand img{width:32px;height:32px}.new-chat-button{width:100%;padding:13px 12px;justify-content:flex-start;border-radius:10px;font-size:12px;font-weight:600;gap:9px}.new-chat-button>.icon{width:17px;height:17px}.new-chat-button>span{margin-left:auto;font-size:17px;opacity:.7}.app-nav{display:flex;flex-direction:column;gap:4px;margin-top:25px}.nav-item{display:flex;align-items:center;gap:11px;text-align:left;width:100%;padding:11px 12px;border-radius:8px;font-size:12px;color:#76867c;transition:background .15s,color .15s}.nav-item>.icon{width:18px;height:18px}.nav-item:hover{background:#eaf0eb;color:#3c6e59}.nav-item.active{color:#088b7c;background:#e1efe7;font-weight:600}.nav-count{margin-left:auto;font-size:9px;color:#91a095;border:1px solid #dce5de;border-radius:4px;min-width:18px;text-align:center}.history-heading{display:flex;align-items:center;justify-content:space-between;padding:0 12px;font-size:8px;letter-spacing:1.2px;color:#94a196;margin:35px 0 12px}.history-heading>span:last-child{font-size:9px;letter-spacing:0}.chat-history{min-height:30px;overflow:auto;flex:1}.history-empty{font-size:10px;line-height:1.9;color:#a1aea5;padding:3px 12px}.history-item{display:flex;align-items:center;border-radius:7px;margin:2px 0;position:relative}.history-item.active{background:#e6eee8}.history-item>button:first-child{display:flex;gap:8px;align-items:center;text-align:left;min-width:0;padding:9px 10px;width:100%;font-size:11px;color:#788b7e}.history-item>button:first-child>span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.history-item .icon{width:14px;height:14px;color:#97aa9d}.history-delete{opacity:0;position:absolute;right:0;top:2px;width:30px;height:32px;background:var(--sidebar);border-radius:7px}.history-item:hover .history-delete,.history-delete:focus-visible{opacity:1}.history-item:hover{padding-right:23px}.sidebar-bottom{margin-top:auto;padding-top:20px}.sidebar-tip{background:#eaf0e8;border:1px solid #e0e9dc;border-radius:11px;padding:16px 14px;margin-bottom:23px}.sidebar-tip>.icon{width:19px;height:19px;color:#83a181;display:block;margin-bottom:10px}.sidebar-tip strong{font-size:10px;font-weight:600}.sidebar-tip p{font-size:10px;line-height:1.8;color:#8b9c8a;margin-top:6px}.device-profile{display:flex;align-items:center;gap:8px;border-top:1px solid #e0e8e1;padding:18px 0}.profile-icon{width:32px;height:32px;border:1px solid #dbe5dd;border-radius:9px;display:grid;place-items:center;color:#779582;background:#fcfdfb;flex-shrink:0}.profile-icon>.icon{width:17px;height:17px}.device-profile>div{flex:1;min-width:0}.device-profile strong{display:block;font-size:9px;font-weight:650}.device-profile small{font-size:8px;color:#9ba99f;display:block;margin-top:2px;white-space:nowrap}.device-profile>.icon-button{width:23px}.device-profile>.icon-button>.icon{width:15px}.app-shell{margin-left:244px;height:100dvh;display:flex;flex-direction:column}.app-header{height:73px;min-height:73px;border-bottom:1px solid #edf1ed;padding:0 34px;display:flex;align-items:center;justify-content:space-between;gap:20px;background:#fff;z-index:10}.app-breadcrumb{display:flex;align-items:center;gap:12px;font-size:11px;color:#93a098;min-width:0}.app-breadcrumb>.icon{width:12px;height:12px;color:#bbc5bd}.app-breadcrumb strong{font-weight:550;color:#576f60;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:320px}.app-header-actions{display:flex;gap:19px;align-items:center}.demo-pill{display:flex;gap:6px;align-items:center;border:1px solid #e5ece5;background:#f9fbf8;padding:4px 9px;border-radius:6px;font-size:9px;color:#83957f;white-space:nowrap}.demo-pill>span{width:5px;height:5px;background:#a9bd8d;border-radius:50%}.icon-button{display:inline-flex;align-items:center;justify-content:center;border-radius:7px;width:32px;height:32px;color:#92a296;flex-shrink:0}.icon-button:hover{background:#edf4ee;color:var(--teal-dark)}.icon-button>.icon{width:18px;height:18px}.mobile-only{display:none}.workspace{min-height:0;flex:1;display:flex;position:relative}.chat-view{display:flex;flex-direction:column;flex:1;min-width:0;min-height:0}.chat-scroll{flex:1;overflow-y:auto;scroll-behavior:smooth;min-height:0}.chat-content{max-width:830px;padding:0 40px;margin:0 auto}.welcome{text-align:center;padding:55px 0 26px}.welcome-mark{display:inline-flex;position:relative;padding:13px;background:#eef7f1;border:1px solid #e2f0e7;border-radius:24px;margin-bottom:22px;transform:rotate(-4deg)}.welcome-mark>img{border-radius:16px}.welcome-star{position:absolute;right:-14px;top:-10px;font-size:25px;color:#d9b46c;transform:rotate(15deg)}.welcome-eyebrow{display:block;font-size:8px;letter-spacing:1.5px;font-weight:650;color:#90a18f}.welcome h1{font-size:39px;font-weight:750;letter-spacing:-1.5px;line-height:1.3;margin:13px 0 14px}.welcome h1 span{color:var(--teal)}.welcome>p{font-size:12px;line-height:1.9;color:#8a9a8e}.quick-actions{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin:30px auto 20px;text-align:left}.quick-actions>button{position:relative;border:1px solid #e5ece5;padding:16px 20px 16px 62px;border-radius:12px;text-align:left;background:#fff;transition:background .15s,border .15s,transform .15s}.quick-actions>button:hover{border-color:#b7d9c8;background:#fbfdfb;transform:translateY(-2px)}.quick-icon{position:absolute;left:17px;top:20px;width:30px;height:32px;border-radius:9px;display:grid;place-items:center}.quick-icon>.icon{width:17px;height:17px}.quick-actions strong{font-size:11px;font-weight:550;display:block}.quick-actions small{display:block;font-size:9px;color:#a1ada4;margin-top:5px}.quick-actions>button>.icon{position:absolute;right:12px;top:26px;width:13px;height:13px;color:#b8c8bc}.example-start{display:inline-flex;align-items:center;gap:8px;padding:6px 12px;font-size:10px;color:#9eafa2;border-radius:20px}.example-start:hover{background:#f2f8f3}.example-start .icon{width:14px;height:14px;color:#9bb7a4}.example-start strong{font-weight:550;color:#6c8b78}.composer-zone{padding:5px 40px 16px;background:linear-gradient(transparent,#fff 12%);flex-shrink:0}.composer-container{max-width:750px;margin:auto}.composer{border:1px solid #dce8df;border-radius:16px;background:#fff;box-shadow:0 5px 24px #2c513508;transition:border-color .15s,box-shadow .15s;overflow:hidden}.composer:focus-within{border-color:#9dcbb4;box-shadow:0 0 0 3px #22b69609,0 5px 24px #2c513508}.composer-settings{display:flex;align-items:center;gap:11px;padding:13px 17px 0;font-size:10px}.composer-settings>label{display:flex;align-items:center;gap:5px;color:#69836e}.composer-settings label>.icon:first-child{width:14px;height:14px;color:#8ca592}.composer-settings label>.icon:last-child{width:11px;height:11px;pointer-events:none}.composer-settings label select{color:inherit;font-size:10px;background:none;border:0;appearance:none;cursor:pointer;padding:3px 1px;min-width:58px}.composer-settings>span:not(.composer-demo){height:12px;width:1px;background:#e4ece5}.composer-demo{margin-left:auto;color:#a3b39f;font-size:7px;letter-spacing:1px}.composer textarea{resize:none;display:block;width:100%;border:0;background:transparent;color:var(--ink);font-size:12px;line-height:1.8;padding:14px 19px 4px;min-height:68px;max-height:150px;outline:none}.composer textarea::placeholder{color:#acb9af}.composer-bottom{display:flex;align-items:center;padding:8px 12px 10px 15px;gap:13px}.upload-button{display:inline-flex;align-items:center;gap:7px;font-size:9px;color:#8fa293;padding:4px 0}.upload-button>.icon{width:16px;height:16px}.upload-button:hover{color:var(--teal)}.keyboard-hint{font-size:8px;color:#bcc7bf;margin-left:auto}.send-button{width:34px;height:34px;background:var(--teal);color:#fff;border-radius:10px;display:grid;place-items:center;transition:background .2s}.send-button:hover{background:var(--teal-dark)}.send-button>.icon{width:19px;height:19px}.composer-disclaimer{font-size:8px;color:#a3b0a5;display:flex;gap:5px;align-items:center;justify-content:center;text-align:center;margin-top:11px;line-height:1.6}.composer-disclaimer .icon{width:11px;height:11px}.upload-limits{font-size:8px;color:#bcc6bd;text-align:center;margin-top:3px;line-height:1.5}.messages{padding:28px 0 30px}.message{margin-bottom:28px;animation:rise-in .25s ease-out}.message-user{display:flex;justify-content:flex-end}.user-bubble{background:#edf5ef;border:1px solid #e1ece4;border-radius:15px 15px 3px 15px;padding:13px 18px;max-width:88%;font-size:13px;line-height:1.8;white-space:pre-wrap;overflow-wrap:anywhere}.message-tutor{display:flex;gap:13px;align-items:flex-start}.message-avatar{width:31px;height:31px;flex-shrink:0;position:sticky;top:14px}.message-main{flex:1;min-width:0}.message-byline{display:flex;align-items:center;gap:8px;margin-bottom:9px;font-size:11px}.message-byline strong{font-weight:650}.message-demo{font-size:7px;letter-spacing:.5px;color:#97a99c;background:#f1f6f1;border:1px solid #e5ede5;border-radius:4px;padding:1px 4px}.message-text{font-size:13px;line-height:1.95;color:#61756a;white-space:pre-wrap;overflow-wrap:anywhere}.message-text strong{font-weight:650;color:#2e5240}.equation-block{background:#f4f9f5;border:1px solid #dfede3;border-radius:11px;font-family:var(--heading);font-size:23px;font-weight:550;padding:17px 24px;color:#268c70;margin:15px 0;letter-spacing:.5px;white-space:pre-wrap;overflow-wrap:anywhere}.solution-steps{margin:16px 0}.solution-step{position:relative;padding:0 0 17px 30px;border-left:1px solid #deebe1;margin-left:9px}.solution-step:last-child{border-left-color:transparent;padding-bottom:0}.step-index{position:absolute;left:-10px;top:1px;width:20px;height:20px;border-radius:50%;background:#e9f5ed;display:grid;place-items:center;font-size:9px;color:#4a9774;border:2px solid white}.solution-step h4{font-size:12px;font-weight:600;line-height:1.7}.solution-step p{font-size:12px;line-height:1.8;color:#7f9185;margin-top:4px;white-space:pre-wrap}.solution-step .equation-block{font-size:19px;padding:10px 18px;margin:10px 0}.message-question{font-size:13px;line-height:1.9;margin:15px 0 11px;color:#456a54;white-space:pre-wrap}.message-suggestions{display:flex;flex-wrap:wrap;gap:6px;margin-top:15px}.suggestion-button{font-size:10px;line-height:1.5;padding:7px 10px;border:1px solid #deebe2;color:#59896e;border-radius:7px;background:#fff}.suggestion-button:hover{background:#eaf6ef;border-color:#b4d8c4}.message-tools{display:flex;align-items:center;gap:12px;margin-top:12px}.message-tool{font-size:9px;color:#a2b1a6;display:flex;gap:5px;align-items:center;padding:3px 0}.message-tool:hover,.message-tool.is-saved{color:var(--teal-dark)}.message-tool>.icon{width:13px;height:13px}.typing{display:flex;align-items:center;gap:4px;padding:11px 0}.typing span{width:5px;height:5px;border-radius:50%;background:#9ebca9;animation:pulse 1.1s infinite}.typing span:nth-child(2){animation-delay:.15s}.typing span:nth-child(3){animation-delay:.3s}.typing-label{font-size:9px;color:#a1b2a6;margin-left:8px}.error-inline{padding:12px 16px;background:#fff3ef;border:1px solid #f5dfd4;color:#b0745c;border-radius:10px;font-size:12px;display:flex;gap:12px;align-items:center;margin-bottom:16px}.error-inline button{text-decoration:underline;font-size:11px;margin-left:auto;white-space:nowrap}.attachment-area{padding:10px 0}.attachment-chip{display:flex;align-items:center;gap:10px;border:1px solid #dceae1;background:#f6faf7;border-radius:10px;padding:10px 12px;font-size:11px;color:#658370}.attachment-chip>img{width:36px;height:36px;object-fit:cover;border-radius:6px}.attachment-chip strong{display:block;font-size:10px;font-weight:550;overflow-wrap:anywhere}.attachment-chip small{display:block;font-size:8px;color:#98aa9c}.attachment-chip>.icon-button{margin-left:auto}.learning-goal{border:1px solid #e1ece3;background:#f9fcf9;border-radius:10px;margin-bottom:10px;padding:10px 13px;color:#6d8d76;font-size:10px}.learning-goal summary{display:flex;align-items:center;gap:7px;cursor:pointer;list-style:none}.learning-goal summary::-webkit-details-marker{display:none}.learning-goal summary>.icon{width:14px;height:14px}.learning-goal summary>.icon:last-child{margin-left:auto;transition:transform .2s}.learning-goal[open] summary>.icon:last-child{transform:rotate(180deg)}.learning-goal strong{font-weight:550}.learning-goal>div{padding-top:10px;font-size:10px;color:#8a9f8c}.goal-chip{display:inline-block;padding:2px 7px;background:#e8f3eb;color:#739a7e;border-radius:4px;font-size:9px;margin:7px 5px 0 0}.goal-chip.complete{background:#d5eedf;color:#3c8f62}.personal-view{flex:1;min-width:0;overflow-y:auto;background:#fbfcfb}.personal-page{max-width:1090px;padding:45px 44px 70px;margin:auto}.page-eyebrow{font-size:9px;color:#82a18d;letter-spacing:1.7px;font-weight:650;margin-bottom:10px}.page-title{font-size:31px;letter-spacing:-1.2px;font-weight:750;margin-bottom:12px}.page-description{color:#8a9e8e;font-size:12px;max-width:670px;line-height:1.9}.personal-toolbar{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:25px}.panel-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:27px;align-items:start}.surface-card{background:white;border:1px solid #e1ebe3;border-radius:15px;padding:25px;box-shadow:0 4px 20px #2e533306}.surface-card h2{font-size:17px;font-weight:650;letter-spacing:-.3px;margin-bottom:17px}.surface-card h3{font-size:15px;font-weight:650;margin-bottom:12px}.field{margin:17px 0}.field label,.field-label{display:block;font-size:11px;font-weight:550;color:#5b7d65;margin-bottom:7px}.field input,.field textarea,.field select,input.field,textarea.field,.material-form input,.material-form textarea,.material-form select{width:100%;background:#fcfdfb;border:1px solid #dfeae1;border-radius:8px;padding:11px 12px;font-size:12px;color:var(--ink);line-height:1.8}.field textarea,.material-form textarea{min-height:150px;resize:vertical}.field input::placeholder,.field textarea::placeholder{color:#adbbaf}.field-hint{font-size:10px;color:#a0b0a3;margin-top:6px;line-height:1.7}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.muted{color:#99ab9c}.personal-page .btn{font-size:11px;padding:11px 15px;border-radius:8px}.personal-page .btn>.icon{width:16px;height:16px}.demo-notice{display:flex;gap:9px;align-items:flex-start;background:#f0f7f1;border:1px solid #e0ece2;border-radius:9px;padding:12px;font-size:10px;color:#88a08b;line-height:1.8;margin:19px 0}.demo-notice .icon{width:15px;height:15px;margin-top:2px}.format-options{display:flex;gap:5px;background:#f3f7f2;padding:4px;border-radius:9px;margin:14px 0}.format-option{padding:8px;border-radius:6px;font-size:10px;color:#8a9e8e;flex:1;display:flex;justify-content:center;align-items:center;gap:6px}.format-option .icon{width:14px;height:14px}.format-option.is-active{background:#fff;color:#3f8e65;box-shadow:0 2px 6px #285f3208}.personal-card-header{display:flex;gap:12px;align-items:center;justify-content:space-between;margin-bottom:17px}.personal-card-header h2,.personal-card-header h3{margin:0}.personal-card-header .icon{width:16px;height:16px}.empty-state{padding:40px 20px;text-align:center;color:#a5b4a7;border:1px dashed #dce7dd;border-radius:13px;background:#fafcf9;margin-top:25px}.empty-state h2,.empty-state h3{font-size:16px;color:#7b9581;margin:13px 0 10px}.empty-state p{font-size:11px;line-height:1.9;max-width:430px;margin:auto}.empty-state .btn{margin-top:18px}.empty-icon{width:51px;height:51px;display:grid;place-items:center;background:#eaf3eb;border-radius:15px;margin:auto;color:#91af96}.empty-icon .icon{width:25px;height:25px}.material-list,.saved-list{display:flex;flex-direction:column;gap:12px;margin-top:20px}.material-item,.saved-item{background:white;border:1px solid #e1ebe2;border-radius:12px;padding:20px}.material-meta{font-size:9px;color:#a5b4a8;display:flex;gap:10px;align-items:center;margin-top:6px}.material-item h3,.saved-item h3{font-size:14px;line-height:1.6}.generated-copy,.saved-content{font-size:12px;color:#7a9180;line-height:1.9;white-space:pre-wrap;overflow-wrap:anywhere}.generated-copy ul{padding-left:18px}.generated-copy h4{font-size:12px;font-weight:650;margin:12px 0 7px}.saved-content{margin-top:14px;max-height:220px;overflow:auto}.flashcard-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:16px}.flashcard{min-height:150px;border:1px solid #dceae0;border-radius:11px;background:#f7fbf6;padding:20px;text-align:center;display:flex;flex-direction:column;justify-content:center;align-items:center;width:100%;transition:background .2s,transform .2s}.flashcard:hover{transform:translateY(-2px)}.flashcard.is-flipped{background:#e9f6ed}.flashcard-label{font-size:8px;text-transform:uppercase;letter-spacing:1px;color:#9ab29f;display:block;margin-bottom:12px}.flashcard-content{font-size:12px;color:#548667;line-height:1.8}.quiz-question{margin-top:18px;border-top:1px solid #e8eee7;padding-top:18px}.quiz-question h4{font-size:12px;font-weight:550;line-height:1.8}.quiz-options{display:flex;flex-direction:column;gap:7px;margin:12px 0}.quiz-option{text-align:left;border:1px solid #e0e9df;background:#fcfdfb;border-radius:8px;font-size:11px;padding:10px 12px;color:#7f9684}.quiz-option:hover{background:#edf8ef}.quiz-option.is-correct{border-color:#9dcab0;background:#e8f7ed;color:#3d8c5c}.quiz-option.is-incorrect{border-color:#e0beb2;background:#fff4ed;color:#b47e66}.quiz-feedback{font-size:10px;color:#7c9b82;line-height:1.8;padding:8px}.quiz-feedback.is-incorrect{color:#b78c6f}.plan-days{margin-top:22px;display:flex;flex-direction:column;gap:11px}.plan-day{padding:17px;border:1px solid #e2ebe2;border-radius:11px;background:white}.plan-date{display:block;font-size:10px;color:#8da291;margin-bottom:10px}.plan-step{display:flex;gap:10px;align-items:flex-start;padding:7px 0;font-size:11px;color:#6e8c76;cursor:pointer;line-height:1.8}.plan-step input{accent-color:var(--teal);width:15px;height:15px;margin-top:3px;flex-shrink:0}.plan-step.is-done{color:#a5b5a7}.plan-step.is-done span{text-decoration:line-through}.progress-track{background:#ecf3eb;height:6px;border-radius:10px;overflow:hidden;margin:12px 0}.progress-track>div,.progress-track>span{height:100%;background:var(--teal);display:block;border-radius:10px;transition:width .2s}.topic-row{display:flex;align-items:center;justify-content:space-between;gap:20px;font-size:11px;color:#7a9680;padding:13px 0;border-bottom:1px solid #eef3ec}.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:27px 0}.stat-card{background:#fff;border:1px solid #e0ebe1;border-radius:13px;padding:24px}.stat-card>.icon{color:#8eb09b;display:block;margin-bottom:17px}.stat-card strong{font-size:30px;font-family:var(--heading);font-weight:650;display:block;line-height:1.4;color:#4b7c5b}.stat-card>span,.stat-card p{font-size:10px;color:#9db0a1;display:block;margin-top:5px}.subject-breakdown{margin-top:20px}.loading-inline{display:flex;align-items:center;justify-content:center;gap:9px;color:#93ab97;font-size:11px;padding:40px 15px}.loading-inline .icon{animation:pulse 1s infinite}.error-message{padding:12px;border-radius:8px;border:1px solid #eddbcc;background:#fff7ee;color:#ba8b6e;font-size:11px;margin-top:15px}.drop-overlay{position:fixed;inset:10px;border:2px dashed #5aba98;border-radius:20px;background:#f0faf4f5;z-index:200;display:grid;place-items:center;text-align:center;pointer-events:none}.drop-overlay .icon{width:50px;height:50px;color:var(--teal);margin-bottom:20px}.drop-overlay h2{font-size:26px;margin-bottom:12px}.drop-overlay p{color:#7a9c86}.drop-overlay small{color:#a2b8a8;font-size:11px}.toast{position:fixed;left:calc(50% + 100px);bottom:25px;transform:translateX(-50%);background:#173c2d;color:#e2f2e7;border-radius:10px;box-shadow:0 5px 25px #153c2830;padding:12px 20px;max-width:min(500px,90vw);font-size:12px;z-index:250;animation:rise-in .2s}.info-dialog{border:1px solid #deeadf;padding:29px;border-radius:17px;max-width:530px;width:calc(100% - 32px);box-shadow:var(--shadow);color:var(--ink)}.info-dialog::backdrop{background:#132e2350;backdrop-filter:blur(3px)}.dialog-heading{display:flex;align-items:flex-start;gap:20px;margin-bottom:18px;justify-content:space-between}.dialog-heading h2{font-size:22px;letter-spacing:-.7px}.info-dialog>p{font-size:12px;color:#84978a;line-height:1.9;margin-bottom:15px}.info-dialog .btn{font-size:12px;padding:12px 19px}.sidebar-backdrop{position:fixed;inset:0;z-index:40;background:#153b2740;backdrop-filter:blur(2px)}
@keyframes rise-in{from{opacity:0;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse{0%,80%,100%{opacity:.35;transform:translateY(0)}40%{opacity:1;transform:translateY(-3px)}}
@media(min-width:1550px){.hero{min-height:740px}.hero h1{font-size:74px}.welcome{padding-top:80px}.welcome h1{font-size:46px}.quick-actions{margin-top:38px}.chat-content{max-width:880px}.composer-container{max-width:800px}}
@media(max-height:850px) and (min-width:901px){.welcome{padding-top:30px;padding-bottom:15px}.welcome-mark{padding:9px;margin-bottom:14px;border-radius:20px}.welcome-mark>img{width:40px;height:40px}.welcome h1{font-size:34px;margin:10px 0}.quick-actions{margin:22px auto 12px;gap:10px}.quick-actions>button{padding-block:13px}.quick-icon{top:16px}.quick-actions>button>.icon{top:23px}.composer-zone{padding-bottom:12px}.sidebar-tip{padding:13px;margin-bottom:17px}.sidebar-tip>.icon{margin-bottom:6px}}
@media(max-width:1150px){.wrap{width:calc(100% - 64px)}.hero{gap:38px;padding-top:45px}.hero h1{font-size:56px;letter-spacing:-2.8px}.hero-actions{flex-wrap:wrap}.hero-description{font-size:14px}.hero-reassurance{gap:15px;font-size:10px}.preview-top{padding:17px 19px 13px}.preview-body{padding:20px 20px 17px}.float-top{right:20px}.steps-grid{gap:26px}.subject-strip{gap:12px}.subject-strip a{font-size:11px;gap:6px}.subject-strip .icon{width:18px;height:18px}.learning-grid{gap:55px}.learning-copy h2{font-size:33px}.learning-sample{padding:22px}.sample-subjects{gap:5px}.subject-tag{font-size:8px}.sidebar{width:220px;padding-inline:14px}.app-shell{margin-left:220px}.app-header{padding-inline:25px}.chat-content{padding-inline:30px}.composer-zone{padding-inline:30px}.quick-actions{gap:9px}.quick-actions>button{padding-right:21px;padding-left:53px}.quick-icon{left:12px}.quick-actions strong{font-size:10px}.quick-actions small{font-size:8px}.quick-actions>button>.icon{right:7px;width:11px}.personal-page{padding:35px 30px}.panel-grid{gap:17px}.surface-card{padding:20px}}
@media(max-width:900px){.desktop-nav{gap:20px;font-size:11px}.site-header{height:84px}.hero{gap:30px;min-height:620px;padding-top:35px}.hero h1{font-size:46px;letter-spacing:-2.5px}.hero .eyebrow{font-size:7px;letter-spacing:1.4px}.hero-description{font-size:13px}.hero-actions{gap:8px}.hero-actions .btn{font-size:10px;padding:13px 12px;border-radius:9px}.hero-actions .icon{width:15px;height:15px}.hero-reassurance{font-size:8px;gap:10px}.hero-reassurance .icon{width:12px}.preview-identity small{font-size:8px}.preview-identity strong{font-size:11px}.preview-identity img{width:29px;height:29px}.preview-top{padding:16px}.preview-body{padding:17px 14px}.preview-context{padding-inline:16px;font-size:8px}.preview-user{margin-left:24px;font-size:10px;padding:10px;margin-bottom:19px}.preview-tutor{gap:8px}.preview-tutor strong{font-size:10px}.preview-tutor p{font-size:10px}.preview-equation{margin-left:29px;padding:9px;font-size:15px}.preview-question{margin-left:29px;font-size:10px}.preview-answers{margin-left:29px;gap:5px}.preview-answers button{font-size:8px;padding:6px 8px}.preview-input{margin:0 15px 15px;font-size:8px}.float-bottom{font-size:9px;padding:10px 12px;left:10px;bottom:5px}.float-bottom small{font-size:7px}.float-top{font-size:9px;right:15px;top:-15px}.float-top>svg:last-child{width:45px;right:-30px}.doodle-one{left:-23px}.doodle-two{right:-24px}.subject-strip p{font-size:6px}.subject-strip a{font-size:9px;gap:5px}.subject-strip .icon{width:16px}.steps-grid{gap:20px}.step-illustration{height:140px}.step-card h3{font-size:17px}.step-card>p{font-size:11px}.step-number{font-size:7px}.round-icon{right:25px}.paper-note{width:145px;padding:15px}.small-chat{font-size:7px;padding:10px}.mini-chat-answer{font-size:7px;padding:6px 8px}.section-space{padding-block:75px}.learning-grid{gap:35px}.learning-copy h2{font-size:29px}.learning-copy>p{font-size:12px}.feature-list strong{font-size:11px}.feature-list span{font-size:10px}.feature-list{gap:18px}.learning-sample{padding:17px}.sample-heading{font-size:9px;gap:6px}.sample-heading .badge{font-size:6px;padding:2px 4px}.sample-subjects{flex-wrap:wrap}.subject-tag{font-size:7px;padding:4px 5px}.learning-sample h3{font-size:16px}.sample-task{padding:12px;gap:9px}.sample-task strong{font-size:9px}.sample-task small{font-size:7px}.sample-note{padding:10px}.sample-note p{font-size:7px}.sample-footer{font-size:6px}.section-heading h2{font-size:34px}.sidebar{width:210px}.app-shell{margin-left:210px}.sidebar-brand{padding-inline:7px}.sidebar-brand .brand{font-size:25px}.sidebar-brand .brand img{width:30px;height:30px}.nav-item{font-size:11px;gap:9px;padding-inline:9px}.new-chat-button{font-size:11px}.app-header{padding-inline:20px;height:65px;min-height:65px}.app-breadcrumb{font-size:9px;gap:8px}.chat-content{padding-inline:23px}.composer-zone{padding-inline:23px}.welcome{padding-top:39px}.welcome h1{font-size:32px}.welcome>p{font-size:11px}.quick-actions>button{padding:13px 23px 13px 49px}.quick-actions strong{font-size:9px}.quick-actions small{font-size:8px}.quick-icon{width:26px;height:29px;top:16px}.quick-icon .icon{width:15px;height:15px}.quick-actions>button>.icon{top:23px}.personal-page{padding:30px 25px}.panel-grid{grid-template-columns:1fr}.page-title{font-size:27px}.stats-grid{gap:10px}.stat-card{padding:18px}.flashcard-grid{grid-template-columns:1fr 1fr}}
@media(max-width:700px){.wrap{width:calc(100% - 40px)}.site-header{height:80px}.site-header .brand{font-size:26px}.site-header .brand img{width:31px;height:31px}.site-header>.btn{font-size:10px;padding:10px 12px}.site-header>.btn .icon{width:16px}.desktop-nav{display:none}.hero{grid-template-columns:1fr;gap:45px;padding:37px 0 40px;text-align:center;min-height:0}.hero h1{font-size:58px;letter-spacing:-3.1px;line-height:1.14;margin-top:22px}.hero .eyebrow{font-size:8px;letter-spacing:1.4px}.hero-description{font-size:14px;max-width:430px;margin:32px auto 0}.hero-actions{justify-content:center;margin-top:24px;gap:10px}.hero-actions .btn{font-size:11px;padding:14px 15px}.hero-reassurance{justify-content:center;font-size:9px;gap:18px;margin-top:18px}.hero-visual{max-width:430px;width:calc(100% - 30px);margin:20px auto 0;text-align:left;padding-bottom:30px}.hero-visual:before{inset:-50px -20px -10px}.preview-top{padding:20px}.preview-identity strong{font-size:13px}.preview-identity small{font-size:9px}.preview-context{padding-inline:20px;font-size:9px}.preview-body{padding:20px}.preview-user{margin-left:40px;font-size:11px}.preview-tutor strong{font-size:11px}.preview-tutor p{font-size:11px}.preview-equation{font-size:17px;margin-left:32px;padding:10px 13px}.preview-question{font-size:11px;margin-left:32px}.preview-answers{margin-left:32px;gap:7px}.preview-answers button{font-size:9px;padding:7px 10px}.preview-input{margin:0 20px 20px;font-size:9px}.float-top{font-size:10px;right:20px;top:-17px}.float-bottom{font-size:10px;left:18px;bottom:2px}.float-bottom small{font-size:8px}.subject-strip{display:grid;grid-template-columns:repeat(3,1fr);padding-block:24px;gap:21px 12px;margin-top:8px}.subject-strip p{display:none}.subject-strip a{font-size:11px;justify-content:center;gap:7px}.subject-strip .icon{width:17px}.section-space{padding-block:65px}.section-heading h2{font-size:31px;letter-spacing:-1.4px}.section-heading>p{font-size:12px}.eyebrow{font-size:8px;letter-spacing:1.4px}.steps-grid{grid-template-columns:1fr;max-width:430px;margin:35px auto 0;gap:34px}.step-illustration{height:180px;margin-bottom:20px}.paper-note{width:185px;padding:22px}.paper-note span{font-size:9px}.paper-note b{font-size:23px}.round-icon{right:60px;width:48px;height:48px;bottom:25px}.small-chat{font-size:11px;padding:17px;max-width:300px}.mini-chat-answer{font-size:10px;padding:8px 14px}.illustration-success>span{font-size:46px}.step-number{font-size:8px}.step-card h3{font-size:21px;margin-block:10px}.step-card>p{font-size:13px;max-width:100%}.learning-grid{grid-template-columns:1fr;gap:38px}.learning-copy h2{font-size:32px}.learning-copy>p{font-size:13px}.feature-list strong{font-size:12px}.feature-list span{font-size:11px}.learning-sample{max-width:430px;width:100%;margin:auto;padding:24px}.sample-heading{font-size:11px}.sample-heading .badge{font-size:7px}.sample-subjects{gap:7px}.subject-tag{font-size:8px;padding:5px 7px}.learning-sample h3{font-size:19px}.sample-task{padding:15px}.sample-task strong{font-size:11px}.sample-task small{font-size:9px}.sample-note p{font-size:9px}.sample-footer{font-size:8px}.faq-list{margin-top:25px}.faq-list summary{font-size:13px;line-height:1.7}.faq-list details>p{font-size:12px}.final-cta{padding:43px 20px;margin-bottom:40px;border-radius:18px}.final-cta h2{font-size:27px;letter-spacing:-1px}.final-cta .eyebrow{font-size:6px;letter-spacing:1px}.final-cta .btn{font-size:12px;padding:14px 18px}.cta-sparkle{left:-14px;top:26px;font-size:55px;opacity:.4}.cta-doodle{right:-6px;bottom:29px;font-size:23px;opacity:.5}.site-footer{flex-wrap:wrap;gap:15px;padding-block:25px}.site-footer p{font-size:10px}.site-footer>span{width:100%;font-size:9px}.sidebar{width:260px;transform:translateX(-100%);transition:transform .23s ease;box-shadow:10px 0 50px #23422c10;padding:24px 20px 0}.sidebar.is-open{transform:translateX(0)}.sidebar-brand{margin-bottom:27px}.sidebar-brand .brand{font-size:29px}.sidebar-brand .brand img{width:34px;height:34px}.mobile-only{display:inline-flex}.nav-item{font-size:12px;padding:12px 10px}.new-chat-button{font-size:12px}.device-profile strong{font-size:10px}.device-profile small{font-size:8px}.sidebar-tip strong{font-size:11px}.sidebar-tip p{font-size:10px}.app-shell{margin-left:0}.app-header{height:60px;min-height:60px;padding-inline:12px;gap:10px}.app-breadcrumb{font-size:10px;gap:7px;flex:1}.app-breadcrumb>span{display:none}.app-breadcrumb>.icon{display:none}.app-breadcrumb strong{max-width:180px}.app-header-actions{gap:7px}.app-header-actions>.icon-button{display:none}.demo-pill{font-size:8px;padding:4px 7px}.chat-content{padding-inline:20px}.welcome{padding-top:36px;padding-bottom:13px}.welcome-mark{padding:11px;margin-bottom:18px;border-radius:21px}.welcome-mark>img{width:43px;height:43px}.welcome-eyebrow{font-size:7px;letter-spacing:1.2px}.welcome h1{font-size:33px;letter-spacing:-1.4px;margin:12px 0}.welcome>p{font-size:11px;line-height:1.8}.quick-actions{margin:25px auto 15px;gap:9px}.quick-actions>button{padding:50px 12px 13px 13px;border-radius:10px;min-height:105px}.quick-actions strong{font-size:10px;line-height:1.6}.quick-actions small{font-size:8px;margin-top:3px}.quick-icon{left:13px;top:12px;height:28px;width:28px;border-radius:8px}.quick-actions>button>.icon{right:13px;top:18px;width:12px}.example-start{font-size:9px;gap:6px;padding-inline:4px}.composer-zone{padding:5px 14px max(10px,env(safe-area-inset-bottom));}.composer-settings{padding:11px 13px 0;gap:9px}.composer textarea{font-size:12px;padding:12px 14px 0;min-height:60px}.composer-bottom{padding:7px 10px 9px 12px}.upload-button{font-size:8px}.keyboard-hint{display:none}.send-button{margin-left:auto;width:32px;height:32px}.composer-disclaimer{font-size:7px;gap:4px;margin-top:8px;line-height:1.6}.composer-disclaimer .icon{width:10px;height:10px}.upload-limits{display:none}.messages{padding-top:25px}.message{margin-bottom:24px}.message-avatar{width:27px;height:27px}.message-tutor{gap:9px}.message-text,.message-question{font-size:12px}.equation-block{font-size:21px;padding:14px 17px}.user-bubble{font-size:12px;padding:11px 14px;max-width:92%}.suggestion-button{font-size:9px;padding:6px 8px}.message-tools{gap:15px}.message-tool{font-size:8px}.learning-goal{font-size:9px;padding:9px 10px;margin-bottom:7px}.goal-chip{font-size:8px}.learning-goal>div{font-size:9px}.personal-page{padding:28px 20px 50px}.page-title{font-size:27px;letter-spacing:-.9px}.page-description{font-size:11px}.panel-grid{margin-top:23px;gap:18px}.surface-card{padding:20px}.stats-grid{grid-template-columns:repeat(3,1fr);gap:8px}.stat-card{padding:15px 12px}.stat-card strong{font-size:26px}.stat-card>span,.stat-card p{font-size:8px;line-height:1.7}.stat-card>.icon{width:18px;height:18px;margin-bottom:12px}.flashcard-grid{gap:9px}.flashcard{padding:15px;min-height:150px}.flashcard-content{font-size:11px}.personal-toolbar{align-items:flex-start}.personal-toolbar .btn{font-size:9px;padding:9px 11px;white-space:nowrap}.toast{left:50%;bottom:20px;font-size:11px;padding:11px 15px;width:max-content;max-width:90vw}.info-dialog{padding:22px}.dialog-heading h2{font-size:20px}.info-dialog>p{font-size:11px}.history-delete{opacity:1;position:static;background:none;width:28px;flex-shrink:0}.history-item>button:first-child{padding-right:5px}.history-item:hover{padding-right:0}}
@media(max-width:370px){.hero h1{font-size:49px}.hero .eyebrow{font-size:7px}.hero-actions .btn{font-size:10px;padding:12px}.hero-reassurance{gap:11px;font-size:8px}.preview-body{padding:16px}.preview-answers button{font-size:8px;padding-inline:7px}.welcome h1{font-size:29px}.quick-actions strong{font-size:9px}.quick-actions small{font-size:7px}.chat-content{padding-inline:16px}.app-breadcrumb strong{max-width:150px}.flashcard-grid{grid-template-columns:1fr}}
.icon{stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.landing{overflow-x:clip}.hero-copy,.hero-visual{min-width:0}.file-label{display:inline-flex;gap:6px;align-items:center;color:#6b8b76;font-size:10px}.file-label>.icon{width:14px;height:14px}
.format-fieldset{border:0;padding:0;margin:20px 0}.btn-full{width:100%}.text-button{padding:0;color:var(--teal-dark);font-size:inherit;text-decoration:underline}.btn-icon{width:30px;height:30px;border-radius:7px;display:inline-flex;align-items:center;justify-content:center;color:#9aad9e;flex-shrink:0}.btn-icon:hover{background:#f1f7ee;color:#658870}.btn-icon>.icon{width:16px;height:16px}.material-item{display:flex;gap:12px;align-items:center;padding:14px 12px}.material-item.is-active{border-color:#b4d6c0;background:#f8fcf7}.material-open{text-align:left;flex:1;min-width:0;padding:0}.material-open strong{display:block;font-size:11px;font-weight:550}.material-item-icon{display:grid;place-items:center;width:32px;height:32px;border-radius:9px;background:#edf5ec;color:#88aa90;flex-shrink:0}.material-item-icon>.icon{width:17px;height:17px}.materials-grid+.surface-card,.preparation-grid+.surface-card{margin-top:23px}.material-preview .empty-state{margin:0;padding:35px 12px;border:0}.material-saved-hint{display:flex;gap:6px;align-items:center;margin-top:24px}.material-saved-hint>.icon{width:13px;height:13px}.flashcard-hint{display:flex;gap:5px;align-items:center;font-size:8px;color:#a1b7a4;margin-top:15px}.flashcard-hint>.icon{width:11px;height:11px}.quiz-option{display:flex;align-items:center;gap:10px}.quiz-option-letter{font-size:10px;flex-shrink:0;width:21px;height:21px;display:grid;place-items:center;border:1px solid #dce8dc;border-radius:6px}.quiz-option>.icon{margin-left:auto;width:14px;height:14px}.quiz-option:disabled{cursor:default;opacity:1}.quiz-question .personal-card-header>.muted{font-size:9px}.quiz-complete{text-align:center;padding:20px 0}.quiz-complete h3{margin:15px 0}.quiz-complete p{font-size:11px;line-height:1.9;margin-bottom:13px}.quiz-feedback p{margin-top:5px}.stat-icon{display:block!important;margin:0 0 14px!important;color:#7aa38a!important}.stat-icon .icon{width:21px;height:21px}.stat-card strong small{font-size:16px;color:#9ab29f}.personal-progress .stats-grid{grid-template-columns:repeat(4,1fr)}.plan-preview>.personal-card-header .muted{font-size:10px}.plan-progress>.personal-card-header{font-size:10px}.plan-progress strong{font-weight:550}.topic-row{width:100%;text-align:left}.topic-row strong{display:block;font-size:10px;font-weight:550}.topic-row small{display:block;color:#acbbae;font-size:9px;margin-top:3px}.topic-row>.icon{width:14px;height:14px}.plan-date h3{font-size:12px;color:#5c8469;line-height:1.7;margin:5px 0 0}.surface-card>.empty-state{border:0;margin:0}.error-message{display:flex;align-items:center;gap:8px}.error-message .icon{width:15px;height:15px}.spinner{display:inline-block;width:14px;height:14px;border:2px solid #ffffff60;border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite}.generated-copy>p+p{margin-top:15px}.saved-item>.btn{margin-top:17px}
@keyframes spin{to{transform:rotate(360deg)}}
@media(max-width:1150px){.format-option{font-size:9px;gap:4px;padding-inline:5px}.format-option .icon{width:12px;height:12px}.personal-progress .stats-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:700px){.personal-progress .stats-grid{grid-template-columns:repeat(2,1fr)}.stat-card>span{font-size:10px}.stat-card{padding:18px}.material-item{padding:13px 10px}.material-open strong{font-size:10px}.material-meta{font-size:8px}.format-option{font-size:10px;padding:8px 5px}.format-options{gap:2px}.format-option .icon{width:13px;height:13px}.quiz-question .personal-card-header{flex-wrap:wrap}.quiz-question h3{font-size:13px;line-height:1.8}.field{display:block}.form-grid{grid-template-columns:1fr}.personal-preparation .plan-preview{padding:18px}.plan-day{padding:14px}.personal-toolbar{flex-wrap:wrap}}
.messages:empty{display:none}
/* Ruhige, gut lesbare UI auch in schmalen Vorschaufenstern. */
.hero-description,.step-card>p,.section-heading>p,.learning-copy>p{color:#62786e}.hero-reassurance{color:#6c8276}.preview-identity small,.preview-tutor p,.preview-question{color:#60786b}.preview-context{color:#6c8275}.preview-answers button{font-size:11px}.preview-input{color:#768a7d}.sample-footer{color:#728777}.site-footer p,.site-footer>span{color:#718577}
.nav-item{font-size:12px;color:#60766a}.new-chat-button{font-size:12px}.history-heading{font-size:9px;color:#758b7b}.history-empty{font-size:11px;color:#7d9282}.history-item>button:first-child{font-size:11px;color:#667d6e}.sidebar-tip strong{font-size:11px}.sidebar-tip p{color:#6c856f;font-size:11px}.device-profile small{color:#728776}.app-breadcrumb{font-size:11px;color:#718576}.demo-pill{font-size:10px;color:#6b8167}.welcome-eyebrow{color:#708d76;font-size:9px}.welcome>p{color:#718677;font-size:13px}.quick-actions strong{font-size:12px}.quick-actions small{font-size:10px;color:#768b7b}.example-start{font-size:11px;color:#788f7d}.composer-settings label select{font-size:11px}.composer textarea{font-size:14px;min-height:72px}.composer textarea::placeholder{color:#82968a}.composer-demo{font-size:8px;color:#7b927d}.upload-button{font-size:11px;color:#6e8a76}.keyboard-hint{font-size:9px;color:#859c8b}.composer-disclaimer{font-size:9px;color:#748c7b}.upload-limits{font-size:9px;color:#82978a}.message-text{color:#506b5c;font-size:14px}.message-question{font-size:14px;color:#395d49}.solution-step p{color:#67806e;font-size:13px}.solution-step h4{font-size:13px}.suggestion-button{font-size:11px;color:#4b7e60}.message-tool{font-size:10px;color:#6b8974}.message-demo{color:#64836e}.learning-goal{font-size:11px;color:#52785d}.learning-goal>div{font-size:11px;color:#708b76}.goal-chip{font-size:10px}.page-description{font-size:13px;color:#6c8473}.page-eyebrow{color:#5e886d;font-size:10px}.field label,.field-label{font-size:12px;color:#4e735a}.field input,.field textarea,.material-form input,.material-form textarea{font-size:13px}.field-hint{font-size:11px;color:#748c7a}.demo-notice{font-size:11px;color:#5e8168}.personal-page .btn{font-size:12px}.format-option{font-size:11px;color:#6c8973}.generated-copy,.saved-content{font-size:13px;color:#587660}.empty-state p{font-size:12px;color:#718b77}.flashcard-content{font-size:13px;color:#497457}.flashcard-label{font-size:9px;color:#6d9076}.flashcard-hint{font-size:10px;color:#6f917a}.quiz-option{font-size:12px;color:#5d7e66}.quiz-feedback{font-size:12px}.plan-step{font-size:12px;color:#5e7e67}.plan-date{font-size:11px;color:#63896f}.material-open strong{font-size:12px}.material-meta{font-size:10px;color:#748e7b}.muted{color:#748d7c}.stat-card>span,.stat-card p{font-size:11px;color:#708a77}.personal-card-header strong{font-size:12px}.topic-row{font-size:12px;color:#63836b}.topic-row strong{font-size:12px}.topic-row small{font-size:10px;color:#809888}.badge{color:#718874}.material-list>.material-item{padding:16px}.surface-card+.surface-card{margin-top:22px}.panel-grid>.surface-card+.surface-card{margin-top:0}
@media(min-width:701px) and (max-width:1000px){.hero h1{font-size:clamp(36px,4.8vw,49px);letter-spacing:-2px}.hero{gap:27px;min-height:600px}.hero .eyebrow{font-size:7px}.hero-description{font-size:13px}.hero-reassurance{flex-wrap:wrap;gap:8px 14px}.preview-answers button{font-size:9px}.quick-actions strong{font-size:11px}.quick-actions small{font-size:9px}.quick-actions>button{padding-right:15px}.quick-actions>button>.icon{display:none}}
@media(max-width:700px){.preview-answers button{font-size:10px}.welcome>p{font-size:12px}.welcome-eyebrow{font-size:8px}.welcome{padding-top:27px}.quick-actions strong{font-size:11px}.quick-actions small{font-size:10px;line-height:1.7}.quick-actions>button{min-height:120px}.composer textarea{font-size:16px;min-height:64px}.composer-settings label select{font-size:12px}.upload-button{font-size:10px}.composer-disclaimer{font-size:8px}.app-breadcrumb{font-size:11px}.message-text,.message-question{font-size:14px}.solution-step p{font-size:13px}.suggestion-button{font-size:11px}.message-tool{font-size:10px}.learning-goal{font-size:10px}.field input,.field textarea,.material-form input,.material-form textarea{font-size:16px}.format-option{font-size:10px}.material-open strong{font-size:12px}.material-meta{font-size:10px}.plan-step{font-size:13px}.page-description{font-size:13px}.generated-copy,.saved-content{font-size:14px}.flashcard-content{font-size:13px}.quiz-option{font-size:13px}.sidebar-tip p{font-size:11px}.nav-item{font-size:13px}.history-item>button:first-child{font-size:12px}.device-profile small{font-size:9px}.site-footer>span{font-size:10px}}
.aha{white-space:nowrap}.practice-card{margin-top:24px}.material-source-note{margin-bottom:17px}.plan-description{margin-bottom:20px}
@media(max-width:700px){.hero h1{font-size:clamp(34px,10.1vw,46px);letter-spacing:-1.8px;line-height:1.18}.hero-actions{gap:8px}.hero-actions .btn{font-size:10px;padding:13px 10px;gap:7px}.hero-actions .btn .icon{width:14px;height:14px}.hero{gap:30px}.hero-visual{margin-top:12px}.hero-description{margin-top:29px}}
@media(prefers-reduced-motion:reduce){html,.chat-scroll{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}}