:root{--navy:#132f58;--blue:#2864dd;--sky:#edf4ff;--ink:#192d49;--muted:#6d7c92;--line:#e4eaf2;--bg:#f6f8fc;--green:#21836c}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.6 Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}button,input,textarea,select{font:inherit}button,a,input,textarea,select{outline-offset:4px}button{cursor:pointer;border:0;border-radius:11px;padding:11px 17px;background:var(--blue);color:#fff;font-weight:600;transition:.2s}button:hover{filter:brightness(.95);transform:translateY(-1px)}button:disabled{opacity:.45;cursor:default;transform:none}a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}h1,h2,h3,p{margin:0}h1{font-size:32px;line-height:1.25;letter-spacing:-.8px}h2{font-size:22px;line-height:1.4;letter-spacing:-.4px}h3{font-size:18px;line-height:1.4}small,.muted{color:var(--muted)}.shell{display:grid;grid-template-columns:258px 1fr;min-height:100vh}.side{background:#fff;border-right:1px solid var(--line);padding:32px 20px;display:flex;flex-direction:column;position:sticky;top:0;height:100vh}.brand{display:flex;gap:12px;align-items:center;padding:0 10px 27px}.logo{width:42px;height:42px;display:grid;place-items:center;border-radius:12px;background:var(--navy);color:white;font-size:23px}.brand strong{font-size:17px}.brand small{display:block;font-size:11px;letter-spacing:1.3px;text-transform:uppercase}.nav-label{padding:14px 14px 8px;color:#94a1b4;font-size:10px;font-weight:700;letter-spacing:1.5px}.nav{background:transparent;color:var(--muted);width:100%;display:flex;gap:12px;align-items:center;text-align:left;padding:13px 14px;margin:3px 0;font-size:14px}.nav.active{color:var(--blue);background:var(--sky)}.icon{width:19px;height:19px;flex-shrink:0;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}.side-bottom{margin-top:auto;border-top:1px solid var(--line);padding:20px 10px 0}.profile{display:flex;gap:10px;align-items:center;font-size:13px}.avatar{width:38px;height:38px;border-radius:50%;background:#e5edff;color:var(--blue);font-weight:700;display:grid;place-items:center}.main{min-width:0}.topbar{height:83px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 42px;gap:16px}.topbar span{font-size:13px}.topbar .right{display:flex;align-items:center;gap:14px}.pill{display:inline-flex;align-items:center;gap:7px;padding:5px 10px;border-radius:7px;font-size:11px;font-weight:600;background:var(--sky);color:var(--blue)}.demo{background:#fff4df;color:#91641c}.demo-strip{background:#fff9ec;color:#8d6a29;padding:9px 42px;font-size:12px;display:flex;align-items:center;justify-content:space-between;gap:10px}.text-button{background:transparent;padding:2px 0;color:inherit;font-size:12px}.content{padding:32px 42px 45px;max-width:1420px;margin:auto}.heading{display:flex;justify-content:space-between;align-items:center;gap:14px;margin-bottom:25px}.heading p{color:var(--muted);margin-top:6px}.hero{padding:35px 37px;border-radius:20px;background:var(--navy);color:white;display:grid;grid-template-columns:1fr 215px;gap:25px;overflow:hidden;position:relative}.hero .eyebrow{color:#aac8ff;font-size:11px;letter-spacing:1.8px;text-transform:uppercase;margin-bottom:15px}.hero h2{font-size:31px;max-width:560px;line-height:1.25}.hero p{color:#c4d3e7;max-width:640px;margin-top:15px;font-size:14px}.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}.white{background:#fff;color:var(--navy)}.secondary{background:#eef3fb;color:var(--navy)}.outline{background:transparent;border:1px solid #546e93;color:white}.danger{background:#fff0f0;color:#b54747}.hero-art{display:flex;justify-content:center;align-items:center}.hero-art svg{width:210px;height:210px}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:17px;margin:23px 0 31px}.stat,.card{background:#fff;border:1px solid var(--line);border-radius:16px}.stat{padding:20px 23px;display:flex;gap:15px;align-items:center}.stat-icon{background:#edf4ff;width:43px;height:43px;display:grid;place-items:center;color:var(--blue);border-radius:12px}.stat:nth-child(2) .stat-icon{background:#edf7f3;color:#2a8c73}.stat:nth-child(3) .stat-icon{background:#f3effc;color:#8060bb}.stat strong{font-size:26px;letter-spacing:-.7px}.stat strong span{font-size:15px;font-weight:400;color:var(--muted)}.stat p{font-size:12px;color:var(--muted)}.section-title{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:17px}.lesson{padding:23px;display:flex;flex-direction:column;min-height:207px}.lesson-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:21px}.lesson-num{color:var(--blue);background:var(--sky);width:39px;height:39px;border-radius:11px;display:grid;place-items:center;font-weight:700}.lesson h3{margin-bottom:6px}.lesson p{font-size:12px}.lesson-bottom{border-top:1px solid var(--line);padding-top:16px;margin-top:22px;display:flex;align-items:center;justify-content:space-between}.lesson-bottom button{padding:0;background:none;color:var(--blue);font-size:13px}.bottom-info{margin-top:25px;padding:21px 24px;display:flex;align-items:center;justify-content:space-between;gap:20px}.bottom-info p{font-size:13px;color:var(--muted);margin-top:4px}.panel{padding:25px;margin-bottom:20px}.panel h2,.panel h3{margin-bottom:12px}.field{display:block;margin-bottom:15px;font-size:13px;font-weight:600}.field input,.field textarea,.field select{display:block;width:100%;margin-top:6px;border:1px solid #d9e2ef;border-radius:10px;background:#fff;padding:11px 12px;color:var(--ink);font-weight:400}.field textarea{min-height:95px;resize:vertical}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 17px}.toolbar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:17px}.search{border:1px solid var(--line);border-radius:11px;padding:11px 15px;min-width:240px;background:#fff}.scroll-table{overflow:auto;border:1px solid var(--line);border-radius:14px;background:white}table{width:100%;border-collapse:collapse;white-space:nowrap;text-align:left;font-size:13px}th{background:#f9fbfe;color:#76849a;font-weight:500}td,th{padding:16px 17px;border-bottom:1px solid var(--line)}tr:last-child td{border:0}.sticky{position:sticky;left:0;background:white;z-index:1}.own td{background:#eef4ff}.own .sticky{background:#eef4ff}.check{border:1px solid #dfe6f0;background:white;color:#95a3b8;min-width:35px;min-height:35px;padding:3px;border-radius:9px}.check.on{background:#e4f3ef;color:var(--green);border-color:#c6e4da;font-size:20px}.check:disabled{opacity:.8}.status{font-size:11px;display:inline-block;padding:4px 9px;background:#f0f3f8;color:#6b7b91;border-radius:6px}.status.review{background:#fff4df;color:#a27326}.status.done{background:#e7f5ef;color:#2a876d}.status.redo{background:#fff0e8;color:#be6e40}.work{margin-bottom:17px}.work-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}.work .form-grid{align-items:end}.grade{font-size:25px;font-weight:700}.hint{padding:14px 17px;background:#f2f6fd;border-radius:10px;color:#647792;font-size:13px;margin:12px 0}.comment{border-left:3px solid #a8bcea;padding:9px 14px;margin:12px 0;color:#61728b;white-space:pre-wrap}.empty{padding:30px;text-align:center;color:var(--muted)}.tabs{display:flex;gap:7px;flex-wrap:wrap;margin:0 0 23px}.tabs button{background:white;border:1px solid var(--line);color:var(--muted)}.tabs button.active{color:var(--blue);border-color:#b7ccf7;background:var(--sky)}dialog{border:0;border-radius:20px;padding:28px;max-width:610px;width:calc(100% - 32px);max-height:90vh;box-shadow:0 25px 100px #172d4955;color:var(--ink)}dialog::backdrop{background:#13233c88;backdrop-filter:blur(3px)}.modal-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:19px}.close{background:#f2f5f9;color:#718197;padding:5px 12px;font-size:21px}#toast{position:fixed;bottom:25px;right:25px;max-width:400px;padding:13px 20px;border-radius:12px;background:var(--navy);color:#fff;box-shadow:0 8px 32px #142e5625;display:none;z-index:10}.auth-shell{min-height:100vh;display:grid;grid-template-columns:1fr 1fr}.auth-story{background:var(--navy);color:#fff;padding:12vh 9vw;display:flex;flex-direction:column;justify-content:center}.auth-story h1{font-size:44px;margin:35px 0 20px}.auth-story p{color:#bfd0e7}.auth-form{display:flex;align-items:center;justify-content:center;padding:30px}.auth-form>div{max-width:420px;width:100%}.auth-form h2{margin-bottom:8px}.auth-form form{margin-top:25px}.auth-form button[type=submit]{width:100%}.auth-links{display:flex;justify-content:space-between;margin-top:17px}.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.contact-grid .card{padding:25px}.contact-grid button,.contact-grid a{display:inline-block;margin-top:16px}iframe{width:100%;height:360px;border:1px solid var(--line);border-radius:12px;margin:15px 0}.preline{white-space:pre-wrap}details{margin-top:15px;color:var(--muted);font-size:13px}summary{cursor:pointer}.error{color:#b44848;margin-top:12px;font-size:13px}.full{grid-column:1/-1}footer{font-size:11px;color:#97a3b3;margin-top:28px}.mobile-brand{display:none}@media(min-width:1600px){.content{padding-top:40px}.hero{padding:45px}}@media(max-width:1150px){.shell{grid-template-columns:220px 1fr}.content{padding:27px}.topbar,.demo-strip{padding-left:27px;padding-right:27px}.hero{grid-template-columns:1fr 150px;padding:28px}.hero-art svg{width:150px}.grid{grid-template-columns:repeat(2,minmax(0,1fr))}.stat{padding:15px;gap:10px}.stat-icon{width:35px}.contact-grid{grid-template-columns:1fr}}@media(max-width:780px){.shell{display:block}.side{height:auto;position:static;padding:15px;border-right:0;border-bottom:1px solid var(--line)}.brand{padding:0 0 12px}.side nav{display:flex;overflow:auto;gap:4px}.nav{width:auto;white-space:nowrap;margin:0;padding:10px}.nav-label,.side-bottom{display:none}.topbar{height:58px;padding:0 18px}.topbar .right .pill{display:none}.demo-strip{padding:10px 18px;align-items:start}.content{padding:22px 18px}.hero{grid-template-columns:1fr;padding:25px}.hero-art{display:none}.hero h2{font-size:27px}.heading h1{font-size:26px}.stats{gap:8px;margin:18px 0 25px}.stat{display:block;padding:14px 10px}.stat-icon{display:none}.stat strong{font-size:23px}.stat p{font-size:10px}.grid{grid-template-columns:1fr 1fr;gap:10px}.lesson{padding:17px;min-height:190px}.lesson h3{font-size:16px}.bottom-info{align-items:start;flex-direction:column}.form-grid{grid-template-columns:1fr}.panel{padding:20px}.auth-shell{grid-template-columns:1fr}.auth-story{padding:35px}.auth-story h1{font-size:28px;margin:15px 0}.auth-story p{display:none}.auth-form{padding:30px 22px}.heading{align-items:start}.search{min-width:0;width:100%}.work-header{align-items:start;gap:10px}.toolbar select{max-width:100%}}@media(max-width:430px){.grid{grid-template-columns:1fr}.topbar span{font-size:11px}.hero h2{font-size:25px}.hero .actions button{font-size:12px}.nav .icon{display:none}}

.zoom-button{display:inline-flex;align-items:center;gap:7px;color:#246ee8;font-size:13px;font-weight:700;white-space:nowrap}.zoom-button:hover{text-decoration:none;opacity:.8}.zoom-icon{display:grid;place-items:center;width:28px;height:28px;border-radius:8px;background:#2d8cff}.zoom-icon svg{width:20px;height:20px;fill:white}.hero .zoom-button{color:white}.hero .zoom-icon{background:#398ef2}.materials-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-bottom:20px}.material-card{margin:0;min-width:0}.material-heading{display:flex;align-items:center;gap:12px;margin-bottom:20px}.material-heading h3{margin:0}.file-row{padding:12px 0;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:12px;min-width:0}.file-row:last-child{border:0}.file-row>div:first-child{min-width:0}.file-download{display:flex;align-items:center;gap:8px;font-size:13px;overflow-wrap:anywhere}.file-download span{min-width:0}.file-row small{display:block;margin:3px 0 0 27px;font-size:11px}.file-actions{display:flex;gap:10px;flex-shrink:0}.file-danger{color:#b34d4d}.file-empty{font-size:13px;padding:10px 0}.upload-section{padding:20px 0;border-bottom:1px solid var(--line)}.upload-section h3{margin-bottom:10px}.upload-form{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:12px}.upload-form input{font-size:12px;min-width:0;max-width:100%}.upload-form button{white-space:nowrap}.topbar .zoom-button{font-size:12px}@media(max-width:780px){.materials-grid{grid-template-columns:1fr}.topbar .zoom-button{font-size:0;gap:0}.upload-form{align-items:start;flex-direction:column}.file-row{align-items:start;flex-direction:column}.file-actions{padding-left:27px}.material-heading .stat-icon{display:grid}}
/* Визуальный стиль курса: кобальт, лайм и мягкие формы. */
:root{--navy:#252832;--blue:#3456ef;--sky:#eef0ff;--ink:#252832;--muted:#707581;--line:#e7e8ee;--bg:#eef0f5;--lime:#e0f876;--lavender:#e9eaff}
body{font-family:"Arial",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg)}
button{border-radius:100px;padding:12px 20px;font-size:14px;letter-spacing:-.1px}
button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #8495ff;outline-offset:4px}
button:hover{transform:translateY(-2px)}
.shell{margin:16px;min-height:calc(100vh - 32px);border-radius:28px;background:#fff;grid-template-columns:248px minmax(0,1fr);box-shadow:0 8px 45px #20264c08}
.side{height:calc(100vh - 32px);top:16px;border-radius:28px 0 0 28px;padding:30px 18px;border-right:1px solid #eeeeF3}
.brand{padding:0 8px 29px;gap:10px}.brand strong{font-size:16px;letter-spacing:-.45px}.brand small{font-size:9px;letter-spacing:.45px;margin-top:4px;line-height:1.4}
.logo{background:var(--lime);color:var(--ink);width:43px;height:43px;border-radius:50%;font-size:29px;transform:rotate(-12deg);flex-shrink:0}
.nav-label{font-size:9px;color:#9297a2;letter-spacing:1.6px;padding-left:16px}
.nav{border-radius:14px;padding:13px 15px;font-weight:500;color:#656a76;gap:10px}
.nav.active{background:var(--blue);color:white;font-weight:700;box-shadow:0 5px 13px #3456ef20}
.nav:not(.active):hover{background:#f3f4f8;filter:none}.side-bottom{padding:20px 7px 0}.avatar{background:var(--lavender);color:var(--blue)}
.topbar{border-radius:0 28px 0 0;background:#fff;height:79px;padding:0 34px}.topbar>span{font-size:12px;color:#676c76}.topbar .right{gap:14px}.topbar .pill{border:1px solid var(--line);background:white;color:#656a76;border-radius:50px;padding:5px 11px;font-size:10px}
.content{padding:29px 34px 35px;max-width:1480px}
h1{font-size:29px;letter-spacing:-1px;font-weight:800}h2{font-size:25px;letter-spacing:-.8px;font-weight:800}h3{font-weight:750;letter-spacing:-.35px}
.heading{margin-bottom:23px}.heading p{font-size:13px;margin-top:8px}
.heading-highlight{position:relative;display:inline-block;z-index:0}.heading-highlight:before{content:"";position:absolute;z-index:-1;inset:3px -8px 0;background:var(--lime);border-radius:40px;transform:rotate(-2deg)}
.course-counter{font-size:11px;font-weight:700;color:#6b7180;background:#f2f3f7;border-radius:50px;padding:7px 13px;letter-spacing:1.2px}
.hero{background:var(--blue);padding:36px 34px;border-radius:28px;grid-template-columns:minmax(0,1fr) 270px;gap:22px;isolation:isolate}
.hero:after{content:"";width:420px;height:420px;border:1px solid #ffffff16;border-radius:50%;position:absolute;right:-140px;top:-170px;z-index:-1}
.hero .eyebrow{display:inline-block;padding:5px 11px;background:var(--lime);color:#252832;border-radius:30px;font-size:9px;letter-spacing:1.2px;font-weight:800;margin-bottom:18px}
.hero h2{font-size:clamp(30px,3.1vw,46px);line-height:1.12;letter-spacing:-1.65px;font-weight:800;max-width:750px}
.hero-highlight{color:var(--lime)}.hero p{color:#e0e6ff;font-size:13px;line-height:1.7;max-width:680px}.hero p:first-of-type{color:white;font-size:12px;font-weight:700;margin-top:20px}
.hero .actions{gap:9px;margin-top:24px;align-items:center}.hero .white{background:var(--lime);color:#242730;font-weight:800;font-size:12px;padding:13px 18px}.hero .outline{border-color:#ffffff77;font-size:12px;padding:12px 17px}.hero .zoom-button{margin-left:3px;color:#fff;font-size:12px}.hero .zoom-icon{background:#ffffff1f;border:1px solid #ffffff44}
.hero-art{position:relative;min-height:255px;width:100%;align-self:center;perspective:900px}
.ai-tile{height:217px;width:207px;position:absolute;left:28px;top:18px;background:var(--lime);border-radius:29px;color:#242730;transform:rotate(9deg);box-shadow:11px 13px 0 #9cbb4375,0 15px 40px #122bad30;display:flex;flex-direction:column;justify-content:space-between;padding:19px 20px;overflow:hidden}
.ai-tile:after{content:"";position:absolute;width:150px;height:150px;border:1px solid #24273020;border-radius:50%;right:-55px;bottom:-60px}.ai-tile strong{font-size:91px;line-height:1;letter-spacing:-9px;font-weight:900}.ai-tile strong span{font-size:44px;display:inline-block;vertical-align:top;letter-spacing:0;margin:10px 0 0 9px;transform:rotate(8deg)}
.tile-caption{font-size:9px;letter-spacing:1.45px;font-weight:800}.tile-footer{font-size:12px;font-weight:700;letter-spacing:-.25px}
.art-orbit{position:absolute;border:1px solid #a9b5ff80;width:260px;height:260px;left:5px;top:0;border-radius:50%;transform:rotate(-20deg) scaleY(.69)}.orbit-two{transform:rotate(48deg) scaleY(.8);opacity:.4}
.art-chip{position:absolute;display:block;font-size:10px;letter-spacing:1.1px;font-weight:800;padding:9px 14px;border-radius:40px;box-shadow:0 5px 16px #142cc530}.chip-idea{left:0;top:23px;background:#fff;color:var(--blue);transform:rotate(-12deg)}.chip-practice{right:-2px;bottom:1px;background:#242730;color:white;transform:rotate(-8deg)}
.art-spark{position:absolute;color:var(--lime);font-size:56px;line-height:1}.spark-one{right:-1px;top:-11px;transform:rotate(20deg)}.spark-two{left:-8px;bottom:19px;font-size:35px;transform:rotate(-15deg)}
.stats{gap:15px;margin:21px 0 31px}.stat{border:0;background:#f3f4f8;border-radius:21px;padding:21px 23px;gap:14px}.stat:nth-child(2){background:var(--lavender)}.stat:nth-child(3){background:var(--lime)}.stat-icon{width:39px;height:39px;border-radius:50%;background:white;color:var(--ink)}.stat:nth-child(2) .stat-icon,.stat:nth-child(3) .stat-icon{background:white;color:var(--ink)}.stat strong{font-size:30px;font-weight:800;letter-spacing:-1.3px}.stat strong span{font-size:13px}.stat p{font-size:11px;color:#626875}
.section-title{margin-bottom:19px}.grid{gap:15px}.card{border-radius:22px;border-color:#e5e7ee}.lesson{position:relative;border:0;background:#f3f4f8;min-height:210px;padding:24px;border-radius:24px;overflow:hidden}.lesson-top{position:relative;z-index:1;margin-bottom:23px}.lesson-num{background:transparent;border:1px solid #bfc3cf;border-radius:50%;color:#555b68;width:34px;height:34px;font-size:11px;font-weight:700}.lesson h3{font-size:20px;font-weight:800;letter-spacing:-.65px}.lesson p{font-size:11px;margin-top:7px}.lesson-bottom{border-top-color:#25283215;position:relative;z-index:1;margin-top:23px;padding-top:16px;font-size:11px}.lesson-bottom .muted{font-size:10px}.lesson-bottom button{font-size:12px;font-weight:800;padding:0;background:transparent;color:var(--ink)}
.lesson:nth-child(3n+2){background:var(--blue);color:white}.lesson:nth-child(3n+2) .muted{color:#e0e6ff}.lesson:nth-child(3n+2) .lesson-num{border-color:#ffffff60;color:white}.lesson:nth-child(3n+2) .lesson-bottom{border-top-color:#ffffff30}.lesson:nth-child(3n+2) .lesson-bottom button,.lesson:nth-child(3n+2) .zoom-button{color:#fff}.lesson:nth-child(3n+2) .zoom-icon{background:#ffffff20;border:1px solid #ffffff40}
.lesson:nth-child(3n){background:var(--lime)}.lesson:nth-child(3n) .muted{color:#56623b}.lesson:nth-child(3n) .lesson-num{border-color:#a4b35f;color:#465124}.lesson:nth-child(3n) .zoom-button{color:#344122}.lesson:nth-child(3n) .zoom-icon{background:#354726}
.lesson:after{content:"✦";position:absolute;right:8px;bottom:-40px;font-size:158px;color:#25283204;transform:rotate(18deg);pointer-events:none}.lesson:nth-child(3n+2):after{color:#ffffff08}.lesson:nth-child(3n):after{color:#80982c13}
.bottom-info{margin-top:23px;border:0;background:#f3f4f8;padding:23px 26px;border-radius:23px}.bottom-info h3{font-size:18px}.bottom-info p{font-size:12px}.secondary{background:#eef0ff;color:#3456ef}.bottom-info .secondary{background:white;color:#252832;font-size:12px}.bottom-info .secondary:after{content:" ↗";font-size:14px}
.panel{padding:27px;border-radius:24px}.panel h2{font-size:23px}.field{font-size:12px}.field input,.field textarea,.field select{border-radius:13px;background:#fcfcfe;border-color:#dde0e9;padding:12px 13px}.field input:focus,.field textarea:focus{background:#fff;border-color:#7285f5}.hint{background:#eff1ff;border-radius:15px;font-size:12px;line-height:1.65;color:#626a85}
.tabs{gap:8px}.tabs button{border-radius:50px;padding:10px 16px;font-size:12px;color:#5a606f;border-color:#e0e3eb}.tabs button.active{background:var(--lime);border-color:var(--lime);color:#252832;font-weight:800}
.search{border-radius:50px;background:#f8f9fc;font-size:13px;padding:11px 17px}.scroll-table{border-radius:22px;border-color:#e6e8ef}th{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.35px;background:#f5f6fa;color:#727887}td{font-size:13px}td,th{padding:17px 18px}.own td,.own .sticky{background:#f4f8df}.check{border-radius:50%;width:35px;height:35px}.check.on{background:var(--lime);color:#364423;border-color:#d1e478}.status{border-radius:30px;padding:5px 10px;font-size:10px}.status.done{background:#eff6d1;color:#5a7133}.pill{border-radius:30px;font-size:10px}
.work-header h3{font-size:21px}.grade{color:var(--blue);font-size:32px}.comment{border-left-color:#bcc65d;border-radius:0 12px 12px 0;background:#f8faef;font-size:13px}.material-card{border:0;background:#f4f5f9}.material-card:nth-child(1){background:var(--blue);color:white}.material-card:nth-child(1) .stat-icon{background:var(--lime);color:#252832}.material-card:nth-child(1) .file-download,.material-card:nth-child(1) .muted{color:#fff}.material-card:nth-child(1) .file-row small{color:#d4ddff}.material-card:nth-child(1) .file-row{border-color:#ffffff25}.material-card:nth-child(3){background:var(--lime)}.material-card:nth-child(4){background:var(--lavender)}.material-heading h3{font-size:20px}.materials-grid{gap:16px}.file-download{font-size:13px}.file-empty{font-size:12px}.upload-section{padding:23px 0}.upload-section h3{font-size:20px}.upload-form input::file-selector-button{border:0;border-radius:50px;padding:9px 12px;margin-right:8px;background:#eef0ff;color:#3456ef;font-weight:600;cursor:pointer}.upload-form .secondary{padding:10px 16px;font-size:12px}
.contact-grid .card{background:#f4f5f9;border:0;border-radius:24px}.contact-grid .card:nth-child(2){background:var(--lime)}.contact-grid .card:nth-child(3){background:var(--lavender)}.contact-grid .stat-icon{background:white}.contact-grid h3{font-size:22px}
dialog{border-radius:26px;padding:29px;box-shadow:0 25px 100px #171c4e33}.close{border-radius:50%;height:34px;width:34px;display:grid;place-items:center;padding:0}.modal-head h2{font-size:23px}dialog::backdrop{background:#151d4e88;backdrop-filter:blur(5px)}#toast{background:#252832;border-radius:50px;font-size:13px;right:30px;bottom:30px}
.auth-shell{min-height:100vh;background:#fff;padding:18px;gap:18px}.auth-story{border-radius:30px;background:var(--blue);padding:9vh 7vw;position:relative;isolation:isolate;overflow:hidden}.auth-story:before{content:"✦";position:absolute;right:-20px;bottom:-135px;font-size:470px;color:#e0f876;z-index:-1;line-height:1;transform:rotate(14deg);opacity:.95}.auth-story:after{content:"";position:absolute;width:550px;height:550px;border:1px solid #ffffff30;border-radius:50%;right:-160px;bottom:-230px;z-index:-1}.auth-story .logo{background:var(--lime)!important;color:#252832}.auth-story .brand strong{font-size:21px}.auth-story h1{font-size:clamp(38px,4.4vw,66px);line-height:1.02;letter-spacing:-2.5px;margin:47px 0 22px;font-weight:800}.auth-story p{color:#e3e8ff;font-size:15px;position:relative;z-index:1}.auth-form{padding:35px}.auth-form h2{font-size:30px;line-height:1.15;letter-spacing:-1px}.auth-form p.muted{font-size:13px;margin-top:12px}.auth-form .pill{background:var(--lime);color:#343b20;font-size:10px;padding:6px 11px}.auth-form button[type=submit]{padding:13px 20px;margin-top:5px;font-weight:800}.auth-links .text-button{font-size:12px;color:var(--blue);padding:4px 0}
footer{border-top:1px solid #f0f1f5;padding-top:18px;font-size:10px;color:#969ba6;margin-top:28px}
@media(min-width:1600px){.hero{padding:45px 42px;grid-template-columns:1fr 300px}.hero h2{font-size:49px}.hero-art{transform:scale(1.12);margin-right:15px}.content{padding-top:35px}.lesson{min-height:225px}}
@media(max-width:1180px){.shell{grid-template-columns:218px minmax(0,1fr)}.side{padding:27px 13px}.brand strong{font-size:14px}.brand small{font-size:8px}.hero{grid-template-columns:1fr 190px;padding:29px;gap:12px}.hero-art{transform:scale(.8);transform-origin:center center;margin-left:-10px}.hero h2{font-size:34px}.content{padding:27px}.topbar{padding:0 27px}.stat{padding:18px}.nav{font-size:12px;padding:12px}.topbar .right{gap:10px}.topbar .right>span:not(.pill){font-size:12px}}
@media(max-width:980px){.hero{grid-template-columns:1fr}.hero-art{position:absolute;right:-60px;top:14px;transform:scale(.6);opacity:.12;z-index:-1;width:270px;pointer-events:none}.hero h2{font-size:36px;max-width:600px}.hero p{max-width:100%}.hero .actions{flex-wrap:wrap}.topbar .pill{display:none}.stat{padding:17px 14px}.stat strong{font-size:26px}.stat p{font-size:10px}}
@media(max-width:780px){.shell{margin:0;border-radius:0;display:block;min-height:100vh}.side{position:static;height:auto;top:auto;border-radius:0;border-right:0;padding:17px 18px 13px}.brand{padding:0 0 13px;gap:10px}.brand strong{font-size:17px}.brand small{font-size:9px}.logo{width:38px;height:38px;font-size:25px}.side nav{gap:5px;padding-bottom:3px}.nav{padding:10px 13px;font-size:12px;border-radius:50px}.nav .icon{width:16px;height:16px}.topbar{height:56px;padding:0 18px;border-radius:0}.topbar .right>span:not(.pill){display:none}.topbar .zoom-button{font-size:11px;gap:6px}.content{padding:23px 18px}.heading{margin-bottom:20px}h1{font-size:26px}.heading p{font-size:12px}.hero{padding:26px 24px;border-radius:24px}.hero h2{font-size:35px;line-height:1.12;letter-spacing:-1.3px}.hero .eyebrow{font-size:8px;padding:5px 9px}.hero p{font-size:12px;line-height:1.65}.hero-art{display:none}.hero .actions{gap:8px}.hero .white,.hero .outline{font-size:11px;padding:11px 14px}.hero .zoom-button{font-size:11px}.stats{gap:8px;margin:16px 0 26px}.stat{border-radius:17px;padding:15px 10px}.stat strong{font-size:25px}.stat strong span{font-size:11px}.stat p{font-size:9px;line-height:1.4;margin-top:4px}.section-title h2{font-size:23px}.course-counter{font-size:9px;padding:6px 10px}.grid{gap:11px}.lesson{padding:21px 18px;border-radius:21px;min-height:202px}.lesson h3{font-size:19px}.lesson .zoom-button{font-size:11px}.lesson .zoom-icon{width:24px;height:24px}.lesson-bottom{margin-top:22px}.lesson-bottom .muted{font-size:9px}.lesson-bottom button{font-size:11px}.panel{padding:23px 20px;border-radius:22px}.material-card{padding:23px}.material-heading h3{font-size:20px}.materials-grid{grid-template-columns:1fr}.bottom-info{padding:22px}.bottom-info h3{font-size:18px}.topbar>span{font-size:11px}.auth-shell{display:block;padding:12px}.auth-story{padding:28px;border-radius:24px;min-height:215px}.auth-story h1{font-size:37px;line-height:1.03;margin:24px 0 0;letter-spacing:-1.5px}.auth-story p{display:none}.auth-story:before{font-size:230px;right:-15px;bottom:-65px}.auth-story .brand strong{font-size:18px}.auth-form{padding:31px 16px}.auth-form h2{font-size:27px}.contact-grid .card{padding:24px}dialog{padding:25px 22px;border-radius:24px}.modal-head h2{font-size:21px}.upload-form{flex-direction:column}.stat-icon{width:36px;height:36px}.material-heading .stat-icon{display:grid}.side-bottom{display:none}.file-row{align-items:start;flex-direction:column}}
@media(max-width:430px){.hero h2{font-size:31px}.hero{padding:24px 21px}.hero .zoom-button{margin-top:3px}.grid{grid-template-columns:1fr}.lesson{min-height:198px;padding:23px}.lesson h3{font-size:22px}.lesson-top{margin-bottom:24px}.lesson .zoom-button{font-size:12px}.nav .icon{display:none}.stats .stat strong{font-size:24px}.stats .stat p{font-size:8px}.topbar .right{gap:9px}.topbar .zoom-button{font-size:0;gap:0}.auth-story h1{font-size:34px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{transition:none!important;scroll-behavior:auto!important}button:hover{transform:none}}
/* Курс: ближайшая встреча, прогресс и личная обратная связь. */
.next-webinar{display:flex;align-items:center;justify-content:space-between;gap:24px;margin:24px 0;padding:28px;background:#e9eaff;border:1px solid #dce0ff}.next-webinar h2{margin:10px 0}.next-webinar p{margin-bottom:10px}.next-webinar .eyebrow{color:#3456ef}.next-webinar small{display:block;max-width:560px;color:#555d73}.next-webinar .actions{flex-wrap:wrap;justify-content:flex-end}.course-progress{margin:24px 0}.progress-label{display:flex;justify-content:space-between;gap:24px}.progress-compact{min-width:180px}.progress-compact small,.course-progress small{display:block;color:#61687a}progress{width:100%;height:10px;appearance:none;border:0;border-radius:20px;margin:13px 0;background:#e7e9ef;overflow:hidden}progress::-webkit-progress-bar{background:#e7e9ef;border-radius:20px}progress::-webkit-progress-value{background:#3456ef;border-radius:20px}progress::-moz-progress-bar{background:#3456ef;border-radius:20px}.preference{display:flex;align-items:center;gap:12px;margin:16px 0}.preference input{width:18px;height:18px;accent-color:#3456ef}.notification{display:flex;justify-content:space-between;align-items:center;gap:22px;padding:24px;margin:12px 0}.notification.unread{border-left:4px solid #3456ef;background:#f4f5ff}.notification small{margin-left:12px;color:#61687a}.notification h3{margin:14px 0 8px}.pdf-open{display:block;margin-top:10px}.pdf-toolbar{display:flex;gap:16px;align-items:center;margin-bottom:16px}.pdf-viewer{width:100%;height:65vh;border:1px solid #dde1ee;border-radius:12px}.communication{display:grid;gap:20px}.communication.with-threads{grid-template-columns:minmax(220px,300px) minmax(0,1fr)}.thread-list{padding:10px;max-height:700px;overflow:auto}.thread{display:block;text-align:left;width:100%;padding:16px;background:transparent;color:#252832;border-radius:14px;border:0;margin:3px 0}.thread.selected,.thread:hover{background:#e9eaff;color:#203fb5}.thread small{display:block;margin-top:8px;font-weight:400;overflow-wrap:anywhere}.unread-dot{display:inline-block;background:#3456ef;color:white;border-radius:20px;padding:2px 7px;margin-left:7px}.chat-panel{padding:24px;min-width:0}.chat-panel h2{font-size:22px}.chat-messages{height:390px;overflow:auto;display:flex;flex-direction:column;align-items:flex-start;gap:14px;padding:20px 0}.bubble{max-width:85%;padding:15px 18px;border-radius:18px 18px 18px 4px;background:#edf0f6;overflow-wrap:anywhere}.bubble.mine{align-self:flex-end;background:#e9eaff;border-radius:18px 18px 4px 18px}.bubble p{white-space:pre-wrap;margin:8px 0}.bubble small{font-size:11px;color:#61687a}.bubble strong{font-size:12px}.chat-panel textarea{min-height:95px}.chat-panel .actions small{color:#61687a}#chat-error{color:#a32436;margin-top:10px}.topbar .right{flex-wrap:wrap}
@media(hover:hover){button,a.pill,.zoom-button,.lesson{transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease}button:hover:not(:disabled),a.pill:hover,.zoom-button:hover{transform:translateY(-2px)}.lesson:hover{transform:translateY(-3px);box-shadow:0 12px 25px #273a7710}}
button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid #8c9fff;outline-offset:3px}
@media(max-width:780px){.next-webinar{flex-direction:column;align-items:flex-start;padding:22px}.next-webinar .actions{justify-content:flex-start}.communication.with-threads{grid-template-columns:1fr}.thread-list{max-height:220px}.notification{align-items:flex-start;flex-direction:column}.chat-panel{padding:18px}.bubble{max-width:94%}.topbar .right{gap:8px}.pdf-toolbar{flex-direction:column;align-items:flex-start}}
@media(prefers-reduced-motion:reduce){button,a.pill,.zoom-button,.lesson{transition:none!important;transform:none!important}}