@charset "UTF-8";
:root{--paper:#f8f6ef;--ink:#243b35;--muted:#73817a;--green:#236b60;--mint:#e2eee2;--coral:#e78769;--yellow:#f0cc73;--line:#e4e6dc;--white:#fffef9;--radius:24px;font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}a{color:inherit;text-decoration:none}button,a,input,select{ -webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:wait;opacity:.55}button,input,select{color:var(--ink)}button{border:0}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible,iframe:focus-visible{outline:3px solid var(--coral);outline-offset:5px}button{transition:background .2s,transform .2s}button:hover:not(:disabled){transform:translateY(-1px)}[hidden]{display:none!important}.skip-link{position:fixed;top:-70px;left:20px;z-index:100;background:var(--green);color:white;padding:12px}.skip-link:focus{top:8px}.site-header{max-width:1440px;margin:0 auto;padding:25px 54px;display:flex;align-items:center;gap:38px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:11px;font-size:21px;font-weight:800;letter-spacing:1px;white-space:nowrap}.brand-mark{display:grid;place-items:center;width:43px;height:47px;border-radius:15px 15px 20px 9px;background:var(--green);color:#fff7da;font-size:27px;transform:rotate(-8deg)}.brand small{display:block;font-size:10px;font-weight:500;letter-spacing:2px;color:var(--muted);margin-top:4px}.site-header nav{display:flex;gap:29px;margin:auto;white-space:nowrap}.site-header nav a{font-size:14px;position:relative;padding:12px 0;color:#7c8279}.site-header nav a.active{color:var(--green);font-weight:700}.site-header nav a.active:after{content:"";position:absolute;bottom:0;left:40%;width:20%;height:3px;border-radius:4px;background:var(--green)}.header-actions{display:flex;align-items:center;gap:22px}.parent-link{font-size:12px;color:var(--muted);white-space:nowrap}.profile-button{border:1px solid var(--line);background:var(--white);border-radius:40px;padding:8px 13px;display:flex;align-items:center;gap:8px;font-size:13px;white-space:nowrap}.mini-avatar{font-size:23px}.profile-button small{color:var(--muted)}main{max-width:1280px;margin:0 auto;padding:38px 40px 65px;min-height:70vh}main:focus{outline:none}.eyebrow{color:var(--green);font-size:11px;letter-spacing:3px;font-weight:800;display:block;margin-bottom:13px}.welcome-line{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.welcome-line p{margin:0;color:var(--muted);font-size:13px}.welcome-line strong{color:var(--ink);font-size:15px}.date-label{font-size:12px;color:var(--muted)}h1,h2,h3,p{margin-top:0}h1{font-size:40px;line-height:1.4;letter-spacing:1px;font-weight:800}h2{font-size:23px;line-height:1.5}h3{font-size:17px;line-height:1.6}.hero{background:#e7eddf;border-radius:28px;min-height:300px;position:relative;padding:42px 42px;overflow:hidden;display:grid;grid-template-columns:1.25fr 1fr;gap:25px}.hero-copy{position:relative;z-index:2}.hero h1{margin-bottom:13px}.hero h1 em{font-style:normal;color:var(--green)}.hero p{font-size:14px;line-height:1.9;color:#6b7c6a;max-width:370px}.hero-actions{display:flex;gap:14px;align-items:center;margin-top:26px}.button{display:inline-flex;gap:12px;justify-content:center;align-items:center;padding:13px 22px;border-radius:12px;font-size:14px;font-weight:650;background:var(--green);color:#fff;line-height:1.5}.button:hover{background:#195448}.button.secondary{background:#fffef8;color:var(--green);border:1px solid var(--line)}.button.secondary:hover{background:#eef3e9}.button.small{padding:9px 15px;font-size:12px}.button.quiet{background:transparent;color:var(--green);border:1px solid #bfcec0}.text-link{background:none;padding:0;color:var(--green);font-size:13px;font-weight:650}.hero-art{position:relative;min-height:220px;align-self:center}.orbit{position:absolute;border:1px dashed #acbba5;border-radius:50%;width:260px;height:260px;left:50%;top:50%;transform:translate(-50%,-50%) rotate(-20deg)}.art-book{width:205px;height:142px;position:absolute;left:50%;top:54%;transform:translate(-50%,-50%) rotate(-12deg);background:#f8f1d6;border-radius:8px 14px 12px 8px;border:7px solid var(--green);box-shadow:10px 12px 0 #c1d4b8}.art-book:before{content:"";position:absolute;top:0;bottom:0;left:49%;width:2px;background:#c5c4a5;box-shadow:6px 0 15px #c5c4a5}.art-book:after{content:"";position:absolute;width:57px;height:5px;left:18px;top:30px;background:#bdc8a9;box-shadow:0 17px 0 #bdc8a9,0 34px 0 #bdc8a9,91px 0 0 #bdc8a9,91px 17px 0 #bdc8a9,91px 34px 0 #bdc8a9}.art-star{position:absolute;left:22%;top:0;color:var(--coral);font-size:48px;transform:rotate(-10deg)}.art-sun{position:absolute;right:10%;top:8px;border-radius:50%;width:72px;height:72px;background:var(--yellow);display:grid;place-items:center;font-size:29px;color:#6f603b}.art-pencil{position:absolute;right:13%;bottom:12px;width:18px;height:105px;background:var(--coral);border-top:14px solid #eeb59b;border-bottom:20px solid #efd6b4;transform:rotate(30deg);border-radius:3px}.art-spark{position:absolute;left:17%;bottom:6px;font-size:31px;color:var(--green)}.hero-label{position:absolute;right:0;bottom:0;font-size:10px;letter-spacing:2px;color:#7b9175}.section{margin-top:38px}.section-heading{display:flex;justify-content:space-between;align-items:center;gap:15px;margin-bottom:18px}.section-heading h2{margin:0}.section-heading h2 small{font-size:12px;font-weight:400;letter-spacing:0;color:var(--muted);margin-left:13px}.section-heading>p{margin:0;font-size:13px;color:var(--muted)}.subject-grid{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:12px}.subject-tile{background:var(--white);border:1px solid var(--line);border-radius:19px;padding:19px 7px;text-align:center;display:flex;flex-direction:column;gap:10px;align-items:center}.subject-tile:hover{border-color:#aec4b0;background:#f0f3e8}.subject-icon{display:grid;place-items:center;width:46px;height:46px;background:var(--tile,#e5eddf);color:var(--green);border-radius:16px;font-size:24px}.subject-tile b{font-size:13px}.subject-tile small{font-size:10px;color:var(--muted)}.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:21px}.course-card{border:1px solid var(--line);background:var(--white);border-radius:20px;overflow:hidden;display:flex;flex-direction:column;transition:transform .2s,box-shadow .2s;position:relative}.course-card:hover{transform:translateY(-3px);box-shadow:0 10px 24px #244b3510}.course-art{height:146px;background:var(--tile,#e8ecdf);position:relative;overflow:hidden;display:flex;align-items:center;justify-content:center;isolation:isolate}.course-art:before,.course-art:after{content:"";position:absolute;border-radius:50%;width:140px;height:140px;border:1px solid #ffffff80;left:-33px;top:40px;z-index:-1}.course-art:after{width:190px;height:190px;left:auto;right:-65px;top:-85px;border:25px solid #ffffff35}.course-art .big-symbol{font-size:56px;filter:saturate(.65);transform:rotate(-8deg)}.art-caption{position:absolute;bottom:13px;left:17px;font-size:10px;letter-spacing:2px;color:#52695c}.kind-badge{position:absolute;right:13px;top:13px;background:#fffef9d9;color:#54665b;font-size:10px;padding:5px 9px;border-radius:7px}.card-body{padding:19px 20px 18px;flex:1;display:flex;flex-direction:column}.card-meta{display:flex;gap:7px;align-items:center;font-size:10px;color:var(--green);margin-bottom:7px;flex-wrap:wrap}.card-body h3{margin:0 0 6px}.card-description{color:var(--muted);font-size:12px;line-height:1.8;margin-bottom:15px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.card-bottom{display:flex;justify-content:space-between;align-items:center;gap:10px;color:var(--muted);font-size:11px;margin-top:auto;padding-top:10px}.card-arrow{width:28px;height:28px;border:1px solid var(--line);border-radius:50%;display:grid;place-items:center;color:var(--green)}.progress-track{height:5px;border-radius:10px;background:#e7ece3;overflow:hidden;margin-top:13px}.progress-track span{display:block;height:100%;background:var(--green);border-radius:10px}.continue-layout{display:grid;grid-template-columns:1.45fr 1fr;gap:22px}.continue-card{display:flex;gap:25px;padding:26px;background:var(--white);border:1px solid var(--line);border-radius:20px}.continue-art{flex:0 0 125px;min-height:125px;border-radius:16px;background:#f2dfc4;display:grid;place-items:center;font-size:55px}.continue-info{flex:1;min-width:0}.continue-info h3{margin:7px 0}.continue-info p{font-size:12px;color:var(--muted);line-height:1.7}.continue-info .button{margin-top:10px}.gentle-note{border-radius:20px;padding:26px 27px;background:#f1e6d9;position:relative;overflow:hidden}.gentle-note:after{content:"✽";font-size:95px;color:#dbbda544;position:absolute;right:15px;bottom:-10px}.gentle-note .eyebrow{color:#9b795e}.gentle-note h3{font-size:21px;margin-bottom:12px}.gentle-note p{font-size:12px;line-height:1.9;color:#887c6c;max-width:270px}.assignment-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px}.assignment{display:flex;align-items:center;gap:17px;padding:18px 21px;border:1px solid var(--line);border-radius:17px;background:var(--white)}.assignment .assignment-text{flex:1;min-width:0}.assignment h3{font-size:14px;margin:0 0 4px}.assignment p{font-size:11px;line-height:1.6;color:var(--muted);margin:0}.assignment-icon{display:grid;place-items:center;width:43px;height:45px;border-radius:12px;background:#f3e7d5;font-size:22px;flex-shrink:0}.pill{font-size:11px;border-radius:7px;padding:5px 8px;background:#edf2e8;color:var(--green);display:inline-block}.page-top{margin:15px 0 30px}.page-top h1{font-size:34px;margin:8px 0 12px}.page-top p{font-size:14px;color:var(--muted);line-height:1.9}.filters{display:flex;gap:12px;background:#fffef9;border:1px solid var(--line);border-radius:16px;padding:15px;margin-bottom:25px;flex-wrap:wrap}.search-box{position:relative;flex:1;min-width:180px}.search-box input{width:100%;padding:12px 16px 12px 37px}.search-box span{position:absolute;left:13px;top:9px;font-size:23px;color:var(--muted)}input,select{border:1px solid var(--line);border-radius:10px;background:#fafbf6;padding:12px 14px;font-size:13px}select{min-width:125px}.result-count{font-size:12px;color:var(--muted);margin-bottom:17px}.empty{border:1px dashed #cad4c5;border-radius:20px;padding:40px 22px;text-align:center;background:#fbfaf4}.empty .empty-symbol{font-size:37px;color:#8eaa8e;margin-bottom:13px}.empty h3{margin:0 0 8px;font-size:17px}.empty p{font-size:13px;color:var(--muted);line-height:1.9;margin:0 auto 17px;max-width:410px}.breadcrumbs{display:flex;gap:9px;align-items:center;color:var(--muted);font-size:12px;margin:0 0 28px;flex-wrap:wrap}.breadcrumbs a:hover{color:var(--green)}.course-header{display:grid;grid-template-columns:1fr 240px;gap:35px;background:#e7eddf;padding:34px 38px;border-radius:24px;margin-bottom:34px}.course-header h1{font-size:31px;margin:10px 0}.course-header p{color:#6f7d6d;font-size:13px;line-height:1.9;max-width:680px;white-space:pre-wrap}.course-header .course-emblem{font-size:80px;display:grid;place-items:center}.detail-tags{display:flex;gap:8px;flex-wrap:wrap;margin:16px 0}.detail-tags span{font-size:11px;background:#fff9;padding:6px 10px;border-radius:6px}.chapter{margin:24px 0}.chapter h2{font-size:17px;display:flex;align-items:center;gap:12px}.chapter h2 span{font-size:10px;color:var(--muted);font-weight:500}.lesson-list{display:grid;gap:9px}.lesson-row{border:1px solid var(--line);border-radius:14px;background:var(--white);display:flex;gap:17px;align-items:center;padding:17px 20px}.lesson-row:hover{border-color:#b3c7b7}.lesson-number{color:#94a08f;font-size:15px;flex:0 0 30px;font-variant-numeric:tabular-nums}.lesson-row-content{flex:1}.lesson-row h3{font-size:14px;margin:0 0 5px}.lesson-row p{font-size:11px;color:var(--muted);margin:0}.lesson-layout{display:grid;grid-template-columns:minmax(0,1fr) 285px;gap:26px}.lesson-content{min-width:0}.lesson-title{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;margin-bottom:22px}.lesson-title h1{font-size:27px;margin:4px 0 8px}.lesson-title p{font-size:12px;color:var(--muted);margin:0}.favorite-button{border:1px solid var(--line);border-radius:12px;background:var(--white);padding:10px 13px;white-space:nowrap;color:#7d846f;font-size:12px}.favorite-button[aria-pressed=true]{background:#fff0ce;color:#946c28;border-color:#e7ce95}.media-frame{background:#172923;border-radius:20px;overflow:hidden;line-height:0}.media-frame video{width:100%;max-height:62vh;aspect-ratio:16/9;background:#172923}.audio-card{background:#e6ece0;border-radius:20px;padding:40px 24px;text-align:center}.audio-illustration{font-size:68px;display:block;margin-bottom:24px}.audio-card audio{width:100%}.lesson-body{margin-top:20px;background:var(--white);border:1px solid var(--line);border-radius:20px;padding:30px}.reading-text{white-space:pre-wrap;overflow-wrap:anywhere;font-size:17px;line-height:2.2;letter-spacing:.4px}.reading-image{display:block;max-width:100%;max-height:600px;object-fit:contain;margin:0 auto 25px;border-radius:12px}.reading-audio{width:100%;margin-bottom:25px}.interactive-frame{width:100%;height:590px;border:1px solid var(--line);border-radius:17px;background:white}.resource-help{font-size:11px;color:var(--muted);line-height:1.9;margin:12px 0}.document-card{text-align:center;padding:55px 25px;background:#edf0e6;border-radius:20px}.document-icon{font-size:54px;margin-bottom:22px}.document-card h3{overflow-wrap:anywhere}.document-card p{font-size:12px;color:var(--muted)}.lesson-controls{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:23px 0;border-bottom:1px solid var(--line)}.save-status{font-size:11px;color:var(--muted)}.completion-message{color:var(--green);font-size:13px}.lesson-pager{display:flex;justify-content:space-between;gap:15px;margin-top:23px}.lesson-pager a{font-size:12px;color:var(--green);max-width:48%;line-height:1.8}.lesson-pager a:last-child{margin-left:auto;text-align:right}.lesson-pager small{display:block;color:var(--muted);font-size:10px}.lesson-sidebar{border:1px solid var(--line);border-radius:18px;background:var(--white);padding:21px;height:fit-content}.lesson-sidebar h2{font-size:16px;margin-bottom:6px}.lesson-sidebar>p{font-size:11px;color:var(--muted);line-height:1.8}.sidebar-lessons{display:grid;gap:7px;margin-top:18px}.sidebar-lessons a{display:flex;gap:8px;padding:11px 10px;border-radius:9px;font-size:12px;line-height:1.7}.sidebar-lessons a.active{background:#e8efe3;color:var(--green);font-weight:700}.sidebar-lessons a:hover{background:#f1f3eb}.sidebar-lessons span:first-child{color:#85947f;font-size:11px;min-width:19px}.sidebar-lessons span:last-child{flex:1}.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:25px 0 30px}.stat{padding:24px;background:var(--white);border:1px solid var(--line);border-radius:18px;display:flex;align-items:center;gap:17px}.stat strong{font-size:30px;color:var(--green)}.stat span{font-size:12px;color:var(--muted)}.tabs{display:flex;gap:7px;margin:26px 0 20px;border-bottom:1px solid var(--line)}.tab{padding:13px 18px;background:none;font-size:14px;color:var(--muted);border-bottom:3px solid transparent}.tab.active{color:var(--green);border-bottom-color:var(--green);font-weight:700}.loading{text-align:center;padding:80px 25px}.loading h1{font-size:24px;margin:22px 0 12px}.loading p{font-size:13px;color:var(--muted)}.loading-orbit{display:inline-block;width:45px;height:45px;border:3px solid #dce5d6;border-top-color:var(--green);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.notice{max-width:1200px;margin:20px auto 0;padding:15px 19px;border-radius:12px;background:#fff0e5;border:1px solid #ecc5ad;color:#8c4b34;font-size:13px;line-height:1.7;display:flex;gap:16px;justify-content:space-between}.notice button{background:none;color:inherit;flex-shrink:0;font-size:20px}.site-footer{max-width:1200px;margin:0 auto;padding:25px 0 30px;border-top:1px solid var(--line);display:flex;align-items:center;gap:20px;font-size:11px;color:#8c9587}.footer-brand{font-size:13px;font-weight:800;color:#63806e}.site-footer span:last-child{margin-left:auto}.toast{position:fixed;bottom:30px;left:50%;transform:translateX(-50%);background:#244d40;color:white;padding:13px 23px;border-radius:13px;box-shadow:0 5px 30px #15352720;font-size:13px;z-index:100;max-width:90vw}dialog{border:0;border-radius:28px;padding:0;max-width:620px;width:calc(100% - 36px);color:var(--ink);background:var(--paper);box-shadow:0 30px 100px #13352f30}dialog::backdrop{background:#1f3d3570;backdrop-filter:blur(5px)}.profile-modal{padding:46px 38px 30px;text-align:center;position:relative}.profile-modal h2{font-size:29px;margin-bottom:10px}.profile-modal>p{font-size:13px;color:var(--muted);line-height:1.9}.profile-options{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin:30px 0 22px}.profile-choice{padding:24px 14px;background:var(--white);border:2px solid var(--line);border-radius:20px}.profile-choice:hover{border-color:var(--green);background:#eff3e7}.profile-choice.selected{border-color:var(--green)}.profile-choice .avatar{font-size:46px;display:grid;place-items:center;width:87px;height:87px;background:#e9efdd;border-radius:50%;margin:0 auto 18px}.profile-choice:nth-child(2n) .avatar{background:#f2dfcd}.profile-choice strong{display:block;font-size:18px;margin-bottom:8px}.profile-choice small{font-size:12px;color:var(--muted)}.profile-modal .profile-note{font-size:11px}.icon-button{background:transparent;font-size:27px;color:var(--muted);padding:8px;line-height:1}.modal-close{position:absolute;top:12px;right:14px}.lock-note{font-size:12px;color:var(--muted);margin-top:14px}.error-state .button{margin-top:6px}.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}
@media(min-width:1400px){.hero{min-height:320px}.hero-art{margin-right:40px}}
@media(max-width:1100px){.site-header{padding:21px 28px;gap:25px}.site-header nav{gap:20px}.header-actions{gap:15px}.parent-link{display:none}main{padding:30px 28px 55px}.hero{padding:35px}.hero h1{font-size:34px}.subject-grid{gap:9px}.lesson-layout{grid-template-columns:minmax(0,1fr) 245px}.site-footer{margin:0 28px}.continue-card{gap:18px;padding:22px}.continue-art{flex-basis:100px}.card-grid{gap:17px}}
@media(max-width:800px){.site-header{flex-wrap:wrap;gap:15px;padding:18px 24px 0}.brand{font-size:19px}.brand small{font-size:9px}.header-actions{margin-left:auto}.site-header nav{order:3;width:100%;margin:0;justify-content:center;gap:50px}.site-header nav a{padding:12px 0 17px}.hero{grid-template-columns:1.4fr 1fr;padding:28px;gap:0;min-height:290px}.hero h1{font-size:29px}.hero-art{transform:scale(.8);transform-origin:center;min-width:200px}.hero p{font-size:12px}.subject-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.subject-tile{padding:15px 8px}.continue-layout{grid-template-columns:1fr}.gentle-note{display:none}.card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.assignment-list{grid-template-columns:1fr}.lesson-layout{grid-template-columns:1fr}.lesson-sidebar{margin-top:10px}.sidebar-lessons{grid-template-columns:repeat(2,minmax(0,1fr))}.course-header{grid-template-columns:1fr 120px;padding:28px}.course-header .course-emblem{font-size:60px}.interactive-frame{height:520px}.stats-grid{gap:10px}.stat{padding:18px;gap:10px}}
@media(max-width:540px){main{padding:25px 18px 42px}.site-header{padding:16px 18px 0}.brand-mark{width:36px;height:40px;font-size:24px}.brand{font-size:17px;gap:8px}.brand small{letter-spacing:1px;font-size:8px}.profile-button{padding:7px 9px;font-size:11px}.profile-button small{display:none}.mini-avatar{font-size:20px}.site-header nav{gap:40px}.site-header nav a{font-size:13px}.welcome-line{margin-bottom:19px}.welcome-line p{font-size:11px}.welcome-line strong{font-size:13px}.date-label{font-size:10px}.hero{display:block;min-height:0;padding:28px 24px 31px;border-radius:22px}.hero h1{font-size:30px;letter-spacing:0}.hero p{max-width:230px;margin-bottom:0}.hero-art{position:absolute;width:150px;min-width:0;height:160px;min-height:0;right:-15px;bottom:5px;transform:scale(.65);transform-origin:right bottom;opacity:.65}.hero-art .orbit{width:230px;height:230px}.hero-art .art-sun{right:-30px;top:-20px}.hero-art .art-pencil{right:-35px}.hero-art .art-star{left:-60px;top:-20px}.hero-label{display:none}.hero-actions{margin-top:22px;gap:12px}.hero-actions .button{padding:11px 16px;font-size:12px}.eyebrow{font-size:9px;letter-spacing:2px}.hero-actions .text-link{font-size:11px}.section{margin-top:29px}.section-heading{margin-bottom:15px}.section-heading h2{font-size:19px}.section-heading h2 small{display:none}.section-heading .text-link{font-size:11px}.subject-grid{gap:8px}.subject-tile{border-radius:14px;padding:13px 4px;gap:8px}.subject-icon{width:38px;height:38px;font-size:21px;border-radius:13px}.subject-tile b{font-size:11px}.subject-tile small{font-size:9px}.continue-card{padding:19px;gap:15px}.continue-art{flex-basis:76px;min-height:100px;font-size:39px}.continue-info h3{font-size:15px}.continue-info p{font-size:11px;margin-bottom:8px}.card-grid{gap:13px}.course-art{height:113px}.course-art .big-symbol{font-size:43px}.card-body{padding:14px 13px}.card-body h3{font-size:14px}.card-description{font-size:11px;-webkit-line-clamp:2}.card-meta{font-size:9px}.card-bottom{font-size:10px}.kind-badge{font-size:9px;padding:4px 6px;top:9px;right:9px}.art-caption{font-size:8px;letter-spacing:1px;left:12px}.assignment{padding:16px;gap:12px}.assignment h3{font-size:13px}.page-top h1{font-size:28px}.page-top p{font-size:12px}.filters{padding:12px;gap:9px}.search-box{flex-basis:100%}.filters select{flex:1;min-width:0;font-size:12px}.course-header{display:block;padding:26px}.course-header .course-emblem{display:none}.course-header h1{font-size:26px}.lesson-row{gap:10px;padding:15px}.lesson-number{flex-basis:22px;font-size:12px}.lesson-row h3{font-size:13px}.lesson-title{gap:10px}.lesson-title h1{font-size:23px}.favorite-button{padding:9px;font-size:11px}.lesson-body{padding:23px 20px}.reading-text{font-size:16px;line-height:2.1}.lesson-controls .button{padding:11px 15px;font-size:12px}.lesson-controls{gap:14px}.interactive-frame{height:65vh;min-height:380px}.sidebar-lessons{grid-template-columns:1fr}.stat{display:block;padding:17px}.stat strong{display:block;font-size:26px;margin-bottom:8px}.stat span{font-size:11px}.tabs{gap:0}.tab{font-size:12px;padding:12px 15px}.profile-modal{padding:43px 22px 26px}.profile-modal h2{font-size:25px}.profile-modal>p{font-size:12px}.profile-options{gap:12px}.profile-choice{padding:20px 10px}.profile-choice .avatar{width:70px;height:70px;font-size:38px}.profile-choice strong{font-size:16px}.site-footer{margin:0 18px;gap:10px;flex-wrap:wrap;font-size:10px}.site-footer span:last-child{margin-left:0;width:100%;font-size:9px}.notice{margin:15px 18px 0;font-size:12px}.empty{padding:30px 18px}.empty h3{font-size:15px}.empty p{font-size:12px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

.document-preview{width:100%;height:68vh;min-height:400px;border:1px solid #deded4;border-radius:16px;background:white}