@import "https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@400;500;600;700;800;900&display=swap";:root{--ink:#253f3a;--muted:#75827c;--green:#247661;--paper:#fcfbf7;--line:#e6e8e1;--mint:#dcefe5;--peach:#f9e5d9;--blue:#e2edf8;--yellow:#faf0cb;--lavender:#ece7f6}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--paper);color:var(--ink);-webkit-font-smoothing:antialiased;margin:0;font-family:Noto Sans KR,Malgun Gothic,sans-serif;font-size:14px;line-height:1.65}button,input,select,textarea{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer;color:inherit;background:0 0;border:0}a{color:inherit;text-decoration:none}button:disabled{cursor:wait;opacity:.6}:is(button:focus-visible,a:focus-visible){outline-offset:5px;outline:3px solid #e6ad41}input:focus,select:focus,textarea:focus{outline-offset:2px;outline:2px solid #6fb59e}h1,h2,h3,p{margin:0}h1,h2,h3{letter-spacing:-.045em;line-height:1.4}h1{font-size:40px;font-weight:800}h2{font-size:25px;font-weight:800}h3{font-size:19px;font-weight:700}svg{flex-shrink:0;display:inline-block}button svg,a svg{vertical-align:middle}.skip-link{z-index:100;background:#fff;padding:15px;position:absolute;top:-80px}.skip-link:focus{top:0}.preview-bar{color:#6d776d;background:#eef2eb;justify-content:space-between;gap:15px;padding:6px 4%;font-size:11px;display:flex}.preview-bar span:first-child{font-weight:600}.preview-bar i{background:#c8a259;border-radius:50%;width:6px;height:6px;margin-right:6px;display:inline-block}.site-header{z-index:20;-webkit-backdrop-filter:none;backdrop-filter:none;background:#fcfbf7f0;border-bottom:1px solid #e9e9e077;height:88px;position:sticky;top:0}.header-inner{align-items:center;gap:70px;max-width:1320px;height:100%;margin:auto;padding:0 44px;display:flex}.brand{color:#256450;white-space:nowrap;align-items:center;gap:7px;display:inline-flex}.brand svg{width:40px;height:40px}.brand b{letter-spacing:-3px;font-size:31px;font-weight:900;line-height:1}.brand-button{padding:0}nav{align-items:center;gap:30px;height:100%;display:flex}nav button{white-space:nowrap;border-bottom:3px solid #0000;padding:31px 0 28px;font-size:14px;font-weight:500}nav button.active{color:var(--green);border-color:var(--green);font-weight:800}.header-right{align-items:center;gap:21px;margin-left:auto;display:flex}.search-button{padding:8px}.button{border-radius:9px;justify-content:center;align-items:center;gap:11px;min-height:48px;padding:13px 22px;font-size:14px;font-weight:700;transition:transform .18s,background .18s;display:inline-flex}.button:hover{transform:translateY(-2px)}.primary{background:var(--green);color:#fff;box-shadow:0 4px 12px #206d5610}.primary:hover{background:#1c6351}.secondary{background:#fff;border:1px solid #dce2d9}.plain{padding-left:12px;padding-right:12px}.login{color:#fff;background:#294e40;border-radius:8px;min-height:40px;padding:10px 18px;font-size:13px}.account-button{align-items:center;gap:8px;font-weight:700;display:flex}.avatar{color:#63572e;background:#eadfba;border-radius:50%;justify-content:center;align-items:center;width:34px;height:34px;font-size:13px;font-weight:700;display:inline-flex}.site-main{max-width:1320px;min-height:65vh;margin:auto;padding:0 44px}.hero{grid-template-columns:1.02fr 1fr;align-items:center;gap:36px;min-height:475px;padding:43px 0 38px;display:grid;position:relative}.hero-kicker{color:#507968;align-items:center;gap:8px;margin-bottom:20px;font-size:13px;font-weight:600;display:flex}.tiny-flower{color:#64a48c;font-size:23px}.hero h1{letter-spacing:-.057em;white-space:nowrap;font-size:43px;line-height:1.42}.hero h1 span{color:#347c66}.hero-copy>p{color:#768279;letter-spacing:-.035em;margin:20px 0 28px;font-size:16px;line-height:1.9}.hero-buttons{align-items:center;gap:12px;display:flex}.hero-points{color:#7a8479;gap:22px;margin-top:24px;font-size:11px;display:flex}.hero-points>span{align-items:center;gap:5px;display:flex}.hero-visual{justify-content:center;align-items:center;min-height:376px;display:flex;position:relative}.hero-visual:before{content:"";z-index:-1;background:radial-gradient(#ecede8 0%,#f7f4e9 35%,#edf3ed 52%,#0000 72%);width:470px;height:410px;position:absolute;top:-10px;left:-2%}.orbit{z-index:-1;border:1px solid #d5decc;border-radius:50%;position:absolute;transform:rotate(-25deg)}.orbit-one{width:470px;height:310px}.orbit-two{border-color:#e7ddcc;width:400px;height:395px;transform:rotate(28deg)}.feature-card{text-align:left;z-index:2;background:#e2ece1;border:6px solid #fff;border-radius:22px;width:365px;padding:0;transition:transform .3s;position:relative;overflow:hidden;transform:rotate(-3deg);box-shadow:0 18px 35px #3c574416}.feature-card:hover{transform:rotate(-1deg)translateY(-5px)}.feature-top{justify-content:space-between;align-items:center;padding:16px 16px 0;font-size:11px;font-weight:700;display:flex}.feature-top span+span{letter-spacing:.07em;border:1px solid #adc2ad;border-radius:5px;padding:3px 7px;font-size:9px}.feature-art{background-image:linear-gradient(#718f7310 1px,#0000 1px),linear-gradient(90deg,#718f7310 1px,#0000 1px);background-size:23px 23px;place-items:center;height:222px;margin:12px 10px 0;display:grid;position:relative}.feature-art .math-art{color:#3c7865;width:235px;height:192px}.art-note{color:#78937c;writing-mode:vertical-rl;font-size:9px;position:absolute;bottom:3px;right:0}.feature-bottom{background:#fff;justify-content:space-between;align-items:center;gap:10px;padding:18px 16px;display:flex}.feature-bottom small{color:#819086;font-size:10px}.feature-bottom h2{margin-top:4px;font-size:18px}.feature-play{color:#fff;background:#337a64;border-radius:50%;place-items:center;width:45px;height:45px;display:grid}.floating-note{z-index:3;background:#fffefb;border:1px solid #f0ece2;border-radius:13px;align-items:center;gap:12px;padding:15px 18px;font-size:13px;font-weight:700;display:flex;position:absolute;bottom:0;right:6px;transform:rotate(4deg);box-shadow:0 7px 20px #45532c0b}.floating-note small{color:#8d9083;margin-top:2px;font-size:10px;font-weight:400;display:block}.check-circle{color:#927c3f;background:#f7e8b9;border-radius:50%;place-items:center;width:36px;height:36px;display:grid}.math-float{z-index:4;position:absolute}.formula{color:#849889;font-family:Georgia,serif;font-size:21px;font-style:italic;top:18px;left:2px;transform:rotate(-12deg)}.sparkle{color:#ddb161;font-size:46px;top:41px;right:6px}.circle-float{color:#b98b68;border:1px solid #dcb799;border-radius:50%;place-items:center;width:57px;height:57px;font:35px Georgia,serif;display:grid;bottom:24px;left:4px;transform:rotate(12deg)}.browse-strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:15px;padding:24px 0;display:flex}.browse-strip>div:first-child b{font-size:14px;display:block}.browse-strip>div:first-child span{color:var(--muted);font-size:11px}.stage-chips{flex-wrap:wrap;gap:9px;display:flex}.stage-chips button{color:#67746c;background:#fffefb;border:1px solid #dfe3d9;border-radius:25px;justify-content:center;align-items:center;gap:7px;min-width:65px;padding:9px 17px;font-size:12px;display:flex}.stage-chips button.selected{background:var(--green);color:#fff;border-color:var(--green)}.stage-chips button:hover:not(.selected){background:#ebf2e8}.chip-dot{background:#e1ac5d;border-radius:50%;width:5px;height:5px}.content-section{padding:44px 0 0}.section-heading{justify-content:space-between;align-items:flex-end;gap:20px;margin-bottom:21px;display:flex}.eyebrow{color:#74887b;letter-spacing:.05em;margin-bottom:7px;font-size:11px;font-weight:600}.section-heading h2{font-size:24px}.row-actions{align-items:center;gap:7px;display:flex}.text-button{color:#738074;align-items:center;gap:8px;padding:5px;font-size:12px;font-weight:600;display:inline-flex}.round-button{background:#fff;border:1px solid #dde2d7;border-radius:50%;place-items:center;width:28px;height:28px;display:grid}.lesson-row{scrollbar-width:thin;scrollbar-color:#d9dfd3 transparent;scroll-snap-type:x mandatory;grid-auto-columns:calc(25% - 15px);grid-auto-flow:column;gap:20px;padding-bottom:14px;display:grid;overflow-x:auto}.lesson-card{scroll-snap-align:start;min-width:0}.lesson-cover{text-align:left;color:#365d50;border-radius:12px;width:100%;height:166px;padding:17px;transition:transform .25s;display:block;position:relative;overflow:hidden}.lesson-cover:hover{transform:translateY(-3px)}.mint{background:var(--mint);color:#396c5b}.peach{background:var(--peach);color:#a05e49}.blue{background:var(--blue);color:#4b6f96}.yellow{background:var(--yellow);color:#8c7942}.lavender{background:var(--lavender);color:#7c659d}.cover-series{letter-spacing:.03em;z-index:2;opacity:.85;font-size:9px;display:block;position:relative}.cover-title{z-index:2;word-break:keep-all;white-space:pre-line;text-shadow:0 1px #fff4;max-width:69%;margin-top:20px;font-size:17px;font-weight:800;line-height:1.55;display:block;position:relative}.lesson-cover .math-art{opacity:.42;width:160px;height:130px;position:absolute;bottom:13px;right:-22px;transform:rotate(7deg)}.duration{color:#fff;background:#334638a6;border-radius:3px;padding:0 5px;font-size:9px;font-weight:500;position:absolute;bottom:9px;right:10px}.cover-play{background:#ffffffa8;border-radius:50%;place-items:center;width:27px;height:27px;display:grid;position:absolute;bottom:12px;left:16px}.complete-label{color:#3f795f;background:#fff;border-radius:5px;align-items:center;gap:2px;padding:2px 5px;font-size:9px;display:flex;position:absolute;top:9px;right:9px}.lesson-meta{color:#869085;align-items:center;gap:6px;min-height:26px;margin-top:10px;font-size:10px;display:flex}.bookmark{color:#849586;margin-left:auto;padding:3px}.bookmark.saved{color:#ba7869}.bookmark.saved svg{fill:#f5d9cf}.lesson-title{text-align:left;-webkit-line-clamp:2;word-break:keep-all;letter-spacing:-.025em;-webkit-box-orient:vertical;min-height:41px;padding:0;font-size:13px;font-weight:700;line-height:1.6;display:-webkit-box;overflow:hidden}.creator{color:#97a094;margin-top:5px;font-size:10px}.progress-track{background:#e3e8df;border-radius:3px;height:3px;margin-top:10px}.progress-track i{background:#70a486;border-radius:3px;height:100%;display:block}.section-caption{color:var(--muted);font-size:11px}.series-grid{grid-template-columns:repeat(5,1fr);gap:15px;display:grid}.series-card{text-align:left;border-radius:13px;padding:19px 17px 16px;transition:transform .25s;position:relative;overflow:hidden}.series-card:hover{transform:translateY(-5px)}.series-no{letter-spacing:.09em;opacity:.65;font-size:9px;font-weight:700}.series-card>.math-art{opacity:.75;width:100%;height:127px;margin:5px 0 10px;display:block}.series-card>small{opacity:.75;font-size:9px}.series-card>h3{word-break:keep-all;min-height:48px;margin-top:5px;font-size:17px}.series-card>div{opacity:.8;justify-content:space-between;align-items:center;margin-top:18px;font-size:10px;display:flex}.mission-ribbon{background:#f2f0e3;border:1px solid #e8e6d6;border-radius:14px;align-items:center;gap:27px;margin-top:45px;padding:31px 35px;display:flex}.ribbon-icon{color:#aab794;font:80px/1 Georgia,serif}.mission-ribbon small{color:#98987e;font-size:10px}.mission-ribbon h2{margin:3px 0 6px;font-size:21px}.mission-ribbon p{color:#8b907f;font-size:12px}.mission-ribbon .button{white-space:nowrap;background:#fbfaf2;min-height:40px;margin-left:auto;padding:10px 17px;font-size:11px}.mobile{display:none}footer{border-top:1px solid var(--line);max-width:1232px;margin:63px auto 0;padding:34px 0 22px}.footer-top{justify-content:space-between;align-items:center;padding-bottom:25px;display:flex}.footer-top .brand svg{width:31px;height:31px}.footer-top .brand b{font-size:25px}.footer-top p{color:#9b9f92;margin-top:7px;font-size:11px}.footer-collab{color:#6c7969}.footer-collab small{font-size:10px}.footer-collab>div{align-items:center;gap:17px;margin-top:5px;font-size:14px;display:flex}.footer-collab>div>a{font-weight:800}.footer-collab>div>span{color:#b3baa9;font-size:19px}.footer-collab b{font-size:12px}.footer-bottom{color:#a0a497;border-top:1px solid #ecece3;justify-content:space-between;gap:15px;padding-top:18px;font-size:10px;display:flex}.footer-bottom>div{gap:20px;display:flex}.footer-bottom button{padding:0;font-size:10px}.page-heading{padding:48px 0 27px}.page-heading h1{margin:7px 0 13px;font-size:34px}.page-heading p{color:var(--muted);font-size:14px}.search-field{background:#fff;border:1px solid #dce3d9;border-radius:11px;align-items:center;gap:14px;max-width:730px;margin-bottom:26px;padding:15px 20px;display:flex}.search-field input{background:0 0;border:0;outline:0;width:100%;padding:0;font-size:14px}.filter-group{border-bottom:1px solid var(--line);padding-bottom:24px}.category-chips{flex-wrap:wrap;gap:9px;margin-top:17px;display:flex}.category-chips button{color:#899085;border-radius:5px;padding:6px 9px;font-size:11px}.category-chips button.selected{color:#416751;background:#e9eee4;font-weight:700}.results-heading{justify-content:space-between;margin:25px 0 20px;font-size:12px;display:flex}.results-heading>span{color:#97a08f;font-size:11px}.lesson-grid{grid-template-columns:repeat(4,1fr);gap:30px 22px;display:grid}.catalog-note{color:#98a08f;border-top:1px solid var(--line);margin-top:34px;padding:20px 0;font-size:11px}.empty{text-align:center;color:#758274;background:#f8f9f3;border:1px dashed #dbe2d3;border-radius:14px;flex-direction:column;align-items:center;gap:16px;padding:60px 24px;display:flex}.empty h2{color:#4a6957;font-size:23px}.empty p{color:#89917f;max-width:500px;font-size:13px}.empty.small{gap:10px;padding:30px 20px}.profile-bar{border:1px solid var(--line);background:#fffefb;border-radius:14px;justify-content:space-between;align-items:center;gap:15px;padding:18px;display:flex}.profile-tabs{flex-wrap:wrap;gap:12px;display:flex}.profile-tab{text-align:left;border:1px solid #0000;border-radius:8px;align-items:center;gap:8px;padding:7px 12px;font-size:13px;display:flex}.profile-tab small{color:#98a08e;font-size:10px;display:block}.profile-tab.active{background:#eef3e9;border-color:#ccdcbf}.profile-add{color:#899782;align-items:center;gap:6px;padding:8px;font-size:11px;display:flex}.profile-controls{flex-wrap:wrap;gap:10px;display:flex}.learning-stats{background:#eff3e8;border-radius:14px;grid-template-columns:repeat(3,1fr);margin:26px 0 38px;padding:25px;display:grid}.learning-stats>div{text-align:center;border-right:1px solid #d9e2d1}.learning-stats>div:last-child{border:0}.learning-stats b{font-size:28px;display:block}.learning-stats span{color:#7c8974;font-size:11px}.subheading{margin:32px 0 18px;font-size:21px}.note-row{border-bottom:1px solid var(--line);text-align:left;align-items:center;gap:16px;width:100%;padding:19px 12px;display:flex}.note-row>span{flex:1}.note-row b{font-size:13px;display:block}.note-row small{color:#98a08e;white-space:pre-line;margin-top:5px;font-size:11px;display:block}.account-details{color:#8d9782;border-top:1px solid var(--line);margin-top:45px;padding-top:20px;font-size:12px}.account-details summary{cursor:pointer}.account-details p{margin:12px 0;font-size:11px}.danger{color:#b77364}.about-page{max-width:1050px;margin:auto;padding:64px 0 0}.about-page>h1{margin:14px 0 30px;font-size:43px;line-height:1.6}.about-page em{color:#6d9c7d;font-style:normal}.about-art{background:#e9f0e4;border-radius:20px;justify-content:space-around;align-items:center;margin-bottom:36px;display:flex}.about-art>.math-art{color:#75a07f;width:300px;height:220px;margin:30px}.about-art>span{color:#6f8b6b;font-size:23px;font-weight:600}.about-prose{color:#73816e;max-width:730px;margin:auto;font-size:16px;line-height:2}.about-prose p{text-align:justify;text-align-last:left;word-break:keep-all;margin:20px 0}.values-grid{grid-template-columns:repeat(3,1fr);gap:30px;margin-top:46px;display:grid}.values-grid b{color:#b3b591;font:italic 28px Georgia,serif}.values-grid h2{margin:12px 0;font-size:22px}.values-grid p{color:#8f9784;font-size:13px;line-height:1.9}.collaboration{text-align:center;padding:60px 0 0}.collaboration small{color:#a0a78f;font-size:12px}.collaboration h2{margin:12px 0}.collaboration h2>span{color:#bdc6ae;padding:0 12px}.collaboration p{color:#94a084;margin-bottom:22px;font-size:13px}.dialog{width:min(590px,100% - 28px);max-height:90vh;color:var(--ink);background:var(--paper);border:1px solid #e6e9df;border-radius:20px;padding:0;overflow:auto;box-shadow:0 30px 80px #12271933}.dialog-wide{width:min(950px,100% - 30px)}.dialog::backdrop{-webkit-backdrop-filter:none;backdrop-filter:none;background:#253f3a80}.dialog-body{position:relative}.close-button{z-index:3;background:#ffffffd9;border-radius:50%;place-items:center;width:33px;height:33px;display:grid;position:absolute;top:16px;right:16px}.signin-dialog{text-align:center;padding:58px 40px 38px}.large-icon{color:#6a9876;background:#e3efdf;border-radius:50%;place-items:center;width:73px;height:73px;margin:0 auto 20px;display:grid}.signin-dialog h2{margin:11px 0 20px;font-size:29px}.signin-dialog>p{color:#92a086;font-size:13px;line-height:1.8}.wide{width:100%}.signin-dialog .button{margin:26px 0 14px}.signin-dialog>small{color:#a0a98f;font-size:11px}.preview-note{background:#f2ecda;border-radius:8px;margin-top:20px;padding:12px;font-size:11px!important}.detail-art{min-height:220px;padding:38px 35px;position:relative;overflow:hidden}.detail-art>.math-art{opacity:.35;width:260px;height:200px;position:absolute;top:10px;right:0}.detail-art>h2{max-width:72%;font-size:28px;line-height:1.55;position:relative}.detail-tags{gap:13px;margin-top:15px;font-size:11px;display:flex;position:relative}.detail-content{padding:25px 35px 30px}.detail-content>p{color:#87957b;font-size:13px}.detail-buttons{gap:10px;margin:20px 0 30px;display:flex}.detail-content>h3{margin-bottom:12px;font-size:17px}.count{color:#86a47a;margin-left:5px;font-size:13px}.episode-list{max-height:330px;overflow:auto}.episode{text-align:left;border-bottom:1px solid #e9eddf;border-radius:5px;align-items:center;gap:17px;width:100%;padding:14px 13px;font-size:12px;display:flex}.episode:hover,.episode.active{background:#eef3e7}.episode-no{color:#acb6a0;min-width:24px;font-size:16px;font-weight:700}.episode>span:nth-child(2){flex:1}.episode small{color:#9ba78d;margin-top:4px;font-size:10px;display:block}.episode>svg{color:#6e9676}.watch-panel{padding:30px}.watch-heading{padding:0 30px 20px 0}.watch-heading h2{font-size:23px}.watch-heading p{color:#9aa28e;margin-top:7px;font-size:11px}.video-frame{aspect-ratio:16/9;background:#172722;border-radius:12px;overflow:hidden}.video-frame iframe{border:0;width:100%;height:100%}.watch-actions{justify-content:space-between;align-items:center;gap:15px;padding:17px 0;display:flex}.watch-actions>span{color:#88977d;align-items:center;gap:6px;font-size:11px;display:flex}.watch-actions .button{min-height:35px;padding:8px 12px;font-size:11px}.note-label{font-size:13px;font-weight:600}.note-actions{justify-content:space-between;align-items:center;gap:15px;display:flex}.note-actions small{color:#9ba78c;font-size:10px}.note-actions .button{min-height:36px;padding:9px 15px;font-size:12px}.next-lesson{text-align:left;background:#eaf0e2;border-radius:9px;justify-content:space-between;align-items:center;width:100%;margin-top:26px;padding:17px 20px;display:flex}.next-lesson small{color:#90a080;font-size:10px;display:block}.next-lesson b{font-size:13px}.profile-form{padding:35px}.form-intro h2{margin:12px 0 9px;font-size:24px}.form-intro p{color:#95a087;margin-bottom:23px;font-size:12px}.step-label{color:#8ba17e;font-size:10px}.step-label span{color:#c0cbb3;padding:0 10px}label{margin-bottom:15px;font-size:12px;font-weight:600;display:block}label em{color:#94a484;margin-left:6px;font-size:9px;font-style:normal}input,select,textarea{color:#486142;background:#fffefb;border:1px solid #dfe5d6;border-radius:7px;width:100%;min-width:0;margin-top:6px;padding:11px 12px;font-size:12px;display:block}input::placeholder,textarea::placeholder{color:#adb59f}input[readonly]{color:#96a087;background:#f1f2e9}textarea{resize:vertical;min-height:90px}label small{color:#99a58a;margin-top:4px;font-size:10px;font-weight:400;display:block}.field-grid{grid-template-columns:1fr 1fr;gap:16px;display:grid}.optional-fields{background:#f5f7ef;border:1px solid #e2e7d9;border-radius:10px;margin:8px 0 20px;padding:18px}.optional-fields legend{padding:0 7px;font-size:13px;font-weight:600}.optional-fields legend span{color:#9cac8b;margin-left:5px;font-size:10px}.optional-fields>p{color:#97a188;margin-bottom:15px;font-size:11px}.check-label{color:#839473;align-items:flex-start;gap:9px;margin:14px 0;font-size:10px;font-weight:400;line-height:1.9;display:flex}.check-label input{accent-color:#468457;flex-shrink:0;width:15px;height:15px;min-height:0;margin:3px 0 0}.consent{margin-bottom:20px}.fine-print{color:#9ca98c;margin-top:16px;font-size:10px;line-height:1.8}.guardian-box{background:#f2f3e9;border-radius:12px;padding:22px}.guardian-box>h3{margin:12px 0}.guardian-box>p{color:#92a080;margin-bottom:20px;font-size:12px}.notice{color:#9b8e60;background:#f9efd3;border:1px solid #eadfbc;border-radius:8px;padding:15px;font-size:11px}.notice p{margin-top:7px}.form-error{color:#a6583b;background:#fbebe4;border-radius:8px;margin:15px 0;padding:13px;font-size:12px}.success-note{color:#728f58;background:#e8f1df;border-radius:8px;margin:15px 0;padding:14px;font-size:12px}.policy{padding:40px}.policy h2{margin:10px 0 18px;font-size:25px}.policy h3{margin:23px 0 8px;font-size:16px}.policy p{color:#889779;text-align:justify;text-align-last:left;word-break:keep-all;font-size:13px;line-height:1.95}.confirm-dialog{padding:50px 35px 25px}.confirm-dialog h2{margin-bottom:15px;font-size:24px}.confirm-dialog p{color:#95a084;font-size:13px}.danger-button{color:#fff;background:#b17663}.toast{color:#fff;z-index:1000;background:#284936;border-radius:10px;align-items:center;gap:18px;max-width:90vw;padding:14px 20px;font-size:13px;display:flex;position:fixed;bottom:26px;left:50%;transform:translate(-50%);box-shadow:0 10px 35px #13231633}.toast button{color:#fff}.admin-area{padding-top:44px}.admin-columns{grid-template-columns:1fr 1fr;gap:25px;display:grid}.panel{border:1px solid var(--line);background:#fffefb;border-radius:14px;margin-bottom:25px;padding:25px}.panel h2{margin-bottom:8px;font-size:21px}.panel>p{color:#909f7e;margin-bottom:20px;font-size:12px}.verify-form{border-top:1px solid var(--line);margin-top:20px;padding-top:20px}.verify-form>p{color:#96a184;margin-bottom:14px;font-size:12px}.table-wrap{overflow-x:auto}table{border-collapse:collapse;text-align:left;width:100%;font-size:12px}th,td{border-bottom:1px solid var(--line);white-space:nowrap;padding:13px}th{color:#90a17f;background:#f4f6ee;font-weight:600}.profile-form .wide{margin-top:7px}@media (min-width:1450px){.hero h1{font-size:49px}.hero{min-height:510px}.feature-card{width:385px}.feature-art{height:240px}.hero-visual{min-height:400px}.lesson-cover{height:179px}}@media (max-width:1280px){footer{margin-left:44px;margin-right:44px}.header-inner{gap:45px}.hero h1{font-size:39px}.hero-visual{transform:scale(.95)}.feature-card{width:340px}.formula{left:-7px}.orbit-one{width:410px}.orbit-two{width:370px}.cover-title{font-size:16px}.series-card{padding:17px 14px}.series-card>h3{font-size:16px}.series-card>.math-art{height:112px}}@media (max-width:1020px){.header-inner,.site-main{padding-left:28px;padding-right:28px}.header-inner{gap:30px}nav{gap:21px}nav button{font-size:12px}.header-right{gap:9px}.hero{gap:18px}.hero h1{font-size:32px}.hero-copy>p{font-size:14px}.hero-buttons .button{padding:11px 15px;font-size:12px}.hero-visual{transform-origin:50%;transform:scale(.88)}.feature-card{min-width:325px}.hero-visual:before{left:-20%}.floating-note{right:-15px}.browse-strip>div:first-child{display:none}.browse-strip{justify-content:center}.lesson-row{grid-auto-columns:calc(33.3333% - 13.3333px)}.lesson-grid{grid-template-columns:repeat(3,1fr)}.series-grid{grid-template-columns:repeat(5,180px);padding-bottom:12px;overflow:auto}.mission-ribbon{gap:20px;padding:26px}.mission-ribbon h2{font-size:18px}.ribbon-icon{font-size:66px}.mission-ribbon p{font-size:11px}footer{margin-left:28px;margin-right:28px}.profile-bar{flex-direction:column;align-items:flex-start}.about-page>h1{font-size:37px}.admin-columns{grid-template-columns:1fr}}@media (max-width:720px){body{font-size:13px}.preview-bar{padding:5px 18px;font-size:9px}.preview-bar span+span{text-align:right;max-width:60%;font-size:8px}.site-header{height:113px}.header-inner{align-items:flex-start;gap:0;padding:0 20px;display:flex;position:relative}.brand-button{margin-top:16px}.brand svg{width:32px;height:32px}.brand b{font-size:26px}.header-right{gap:10px;padding-top:15px}.login{min-height:33px;padding:7px 11px;font-size:10px}.search-button{padding:4px}.header-inner nav{justify-content:space-between;gap:8px;height:48px;position:absolute;bottom:0;left:20px;right:20px}.header-inner nav button{padding:15px 5px 12px;font-size:12px}.site-main{padding:0 20px}.hero{grid-template-columns:1fr;gap:8px;padding:34px 0 20px}.hero h1{white-space:normal;letter-spacing:-.06em;font-size:34px}.hero-kicker{margin-bottom:14px;font-size:11px}.hero-copy>p{margin:17px 0 21px;font-size:13px}.hero-buttons{gap:8px}.hero-buttons .primary{min-height:43px;padding:11px 17px;font-size:12px}.hero-buttons .plain{font-size:11px}.hero-points{gap:20px;margin-top:20px;font-size:10px}.hero-visual{transform-origin:50%;min-height:326px;margin:-5px 0 -18px;transform:scale(.86)}.hero-visual:before{width:430px;left:50%;transform:translate(-50%)}.feature-card{width:310px;min-width:0}.feature-art{height:190px}.feature-art .math-art{width:220px;height:172px}.feature-top{font-size:10px}.feature-bottom h2{font-size:16px}.floating-note{padding:12px 15px;font-size:11px;bottom:-12px;right:-5px}.floating-note small{font-size:9px}.circle-float{left:-5px}.formula{font-size:17px;left:0}.sparkle{font-size:35px;right:-2px}.orbit-one{width:340px;height:270px}.orbit-two{width:315px;height:335px}.browse-strip{padding:20px 0}.stage-chips{justify-content:flex-start;gap:7px}.stage-chips button{min-width:0;padding:7px 13px;font-size:11px}.browse-strip .stage-chips{white-space:nowrap;flex-wrap:nowrap;width:100%;padding-bottom:3px;overflow:auto}.content-section{padding-top:31px}.section-heading{align-items:flex-end;gap:9px;margin-bottom:16px}.section-heading h2{word-break:keep-all;font-size:20px}.eyebrow{margin-bottom:6px;font-size:9px}.text-button{white-space:nowrap;font-size:10px}.row-actions{gap:0}.desktop{display:none}.lesson-row{grid-auto-columns:75%;gap:14px;margin-right:-20px;padding-right:20px}.lesson-cover{height:165px}.lesson-title{font-size:13px}.section-caption{display:none}.series-grid{grid-template-columns:repeat(5,168px);gap:13px;margin-right:-20px;padding-right:20px}.series-card>h3{font-size:17px}.mission-ribbon{flex-wrap:wrap;align-items:flex-start;gap:10px;margin-top:30px;padding:24px 21px}.ribbon-icon{display:none}.mission-ribbon h2{font-size:20px;line-height:1.55}.mission-ribbon small{font-size:9px}.mission-ribbon p{max-width:270px;font-size:11px;line-height:1.8}.mission-ribbon .button{margin:7px 0 0;padding:8px 14px;font-size:10px}.mobile{display:block}footer{margin:40px 20px 0;padding-top:27px}.footer-top{flex-direction:column;align-items:flex-start;gap:25px}.footer-top p{font-size:10px}.footer-collab>div{gap:12px}.footer-bottom{flex-direction:column;gap:15px;font-size:9px}.footer-bottom button{font-size:9px}.page-heading{padding-top:32px}.page-heading h1{word-break:keep-all;font-size:27px}.page-heading p{font-size:12px}.search-field{gap:10px;padding:13px}.search-field input{font-size:11px}.category-chips{gap:5px}.category-chips button{font-size:10px}.lesson-grid{grid-template-columns:repeat(2,1fr);gap:26px 13px}.lesson-grid .lesson-cover{height:129px;padding:13px}.lesson-grid .cover-title{max-width:83%;margin-top:9px;font-size:13px;line-height:1.5}.lesson-grid .cover-series{font-size:7px}.lesson-grid .math-art{width:105px;height:100px;bottom:10px;right:-20px}.lesson-grid .cover-play{width:21px;height:21px;bottom:9px;left:12px}.lesson-grid .duration{font-size:8px}.lesson-grid .lesson-title{min-height:35px;font-size:11px}.lesson-grid .lesson-meta{gap:4px;font-size:8px}.lesson-grid .bookmark svg{width:15px;height:15px}.results-heading{font-size:11px}.results-heading>span{font-size:9px}.profile-controls{gap:9px}.profile-tabs{gap:5px}.profile-bar{padding:13px}.profile-tab{padding:7px}.profile-add{font-size:10px}.learning-stats{padding:20px 10px}.learning-stats b{font-size:24px}.learning-stats span{font-size:9px}.subheading{font-size:18px}.empty{padding:40px 18px}.empty h2{font-size:20px}.empty p{font-size:12px}.about-page{padding-top:36px}.about-page>h1{font-size:29px;line-height:1.6}.about-art{flex-direction:column;gap:0;padding-bottom:25px}.about-art>.math-art{width:220px;height:160px;margin:20px}.about-art>span{text-align:center;font-size:20px}.about-prose{font-size:13px;line-height:1.95}.values-grid{grid-template-columns:1fr;gap:25px}.values-grid>div{border-top:1px solid var(--line);padding-top:15px}.values-grid h2{margin-left:20px;font-size:20px;display:inline}.values-grid p{margin-top:10px;font-size:12px}.collaboration h2{font-size:19px}.collaboration h2>span{padding:0 5px}.collaboration p{font-size:11px}.dialog{border-radius:15px;max-height:92dvh}.dialog-wide{width:calc(100% - 20px)}.dialog-body{min-width:0}.signin-dialog{padding:53px 25px 30px}.signin-dialog h2{font-size:25px}.detail-art{min-height:185px;padding:34px 23px}.detail-art>h2{max-width:83%;font-size:22px}.detail-art>.math-art{opacity:.22;right:-40px}.detail-content{padding:20px}.detail-content>p{font-size:12px}.detail-content .button{min-height:42px;padding:11px 17px;font-size:12px}.episode{gap:11px;padding:13px 8px;font-size:11px}.episode-no{font-size:14px}.watch-panel{padding:19px}.watch-heading{padding-top:10px}.watch-heading h2{font-size:19px}.video-frame{border-radius:8px}.watch-actions{align-items:flex-start;gap:7px}.watch-actions>span{max-width:160px;font-size:9px;line-height:1.7}.watch-actions .button{white-space:nowrap;padding:7px;font-size:9px}.note-actions{flex-wrap:wrap}.note-actions small{font-size:9px}.next-lesson b{font-size:11px}.profile-form{padding:36px 23px 25px}.form-intro h2{max-width:90%;font-size:21px}.field-grid{gap:12px}.profile-form label{font-size:11px}.check-label{font-size:9px!important}.profile-form input,.profile-form select,.profile-form textarea{font-size:12px}.guardian-box{padding:18px}.guardian-box h3{font-size:17px}.optional-fields{padding:14px}.policy{padding:38px 24px}.policy p{font-size:12px}.confirm-dialog{padding:46px 25px 20px}.confirm-dialog h2{font-size:22px}.toast{width:max-content;max-width:90%;padding:12px 15px;font-size:11px;bottom:17px}.panel{padding:20px}.admin-area h1{font-size:29px}.account-button>span+span{display:none}}@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}.creator,.lesson-meta,.catalog-note,.fine-print,.section-caption,.footer-top p,.footer-bottom,.hero-points,.page-heading p,.results-heading>span,.profile-form small{color:#6e7b69}.auth-form{flex-direction:column;gap:18px;padding:50px 46px 35px;display:flex}.auth-form h2{font-size:30px}.auth-form>p{color:var(--muted)}.auth-form label{flex-direction:column;gap:7px;font-size:13px;font-weight:600;display:flex}.auth-form input:not([type=checkbox]),.auth-form select{border:1px solid var(--line);width:100%;min-height:47px;color:var(--ink);background:#fff;border-radius:11px;padding:13px}.auth-form em{color:var(--green);font-size:10px;font-style:normal}.auth-form .check-label{flex-direction:row;align-items:flex-start;gap:9px;font-weight:400}.auth-form .check-label input{flex-shrink:0;margin-top:5px}.auth-links{color:var(--green);flex-wrap:wrap;justify-content:space-between;gap:15px;font-size:12px;display:flex}.recovery-panel code{word-break:break-all;background:var(--mint);-webkit-user-select:all;user-select:all;border:1px dashed #6da389;border-radius:15px;padding:22px;font-size:19px}.approval-notice{background:#fff9e8;border:1px solid #ded9c2;border-radius:18px;flex-direction:column;align-items:flex-start;gap:13px;margin:24px 0;padding:27px;display:flex}.approval-notice h2{font-size:22px}.member-review{margin-bottom:28px}.member-review-card{border-top:1px solid var(--line);flex-direction:column;gap:13px;margin-top:20px;padding:24px 0;display:flex}.member-review-card h3 small{color:var(--muted);font-size:12px}.status-chip{background:var(--yellow);white-space:nowrap;border-radius:99px;padding:5px 12px;font-size:12px}.status-chip.approved{background:var(--mint)}.status-chip.held{background:var(--peach)}.member-review-card label{flex-direction:column;gap:7px;display:flex}.member-review-card input,.member-review-card select{width:100%}.member-review-card>.button{align-self:flex-start}@media (max-width:640px){.auth-form{gap:16px;padding:45px 24px 28px}.auth-form h2{font-size:25px}.auth-form .field-grid{grid-template-columns:1fr}.recovery-panel code{font-size:15px}.member-review-card .section-heading{align-items:flex-start}.member-review-card h3 small{display:block}.member-review-card .field-grid{grid-template-columns:1fr}}.password-required{max-width:620px;margin:40px auto;padding:0 18px}.admin-recovery{margin-bottom:28px}.admin-recovery form{flex-direction:column;gap:16px;max-width:680px;display:flex}.admin-recovery .recovery-result{background:var(--mint);border-radius:14px;margin-top:22px;padding:20px}.admin-recovery textarea{white-space:pre-wrap;width:100%;min-height:180px}.admin-recovery label{flex-direction:column;gap:7px;display:flex}.admin-recovery .check-label{flex-direction:row}.admin-recovery .check-label input{width:auto}.admin-recovery .recovery-result p{margin-bottom:12px}@media (max-width:1100px){.site-header{background:var(--paper);height:116px}.header-inner{grid-template-rows:66px 50px;grid-template-columns:auto minmax(0,1fr);gap:0;padding:0 24px;display:grid}.brand-button{grid-area:1/1;place-self:center start;margin:0}.header-right{grid-area:1/2;place-self:center end;gap:14px;min-width:0;margin:0;padding:0}.header-inner>nav{grid-area:2/1/auto/-1;justify-content:flex-start;align-items:stretch;gap:27px;width:100%;height:50px;position:static;overflow-x:auto}.header-inner>nav button{min-height:48px;padding:13px 2px 10px;font-size:14px}.header-right>a,.header-right>button{min-height:44px}.header-right .search-button{width:44px;min-width:44px}.site-main{padding-left:24px;padding-right:24px}.site-header .account-button{justify-content:center;min-width:44px}.brand-button{min-height:44px}.button:hover{transform:none}.dialog,.ops-dialog{overscroll-behavior:contain;scroll-padding-block:64px 24px}.dialog{max-height:calc(100dvh - 32px)}.dialog-wide{width:min(950px,100% - 32px)}.close-button{width:44px;height:44px;top:10px;right:10px}.dialog label{line-height:1.7}.dialog input:not([type=checkbox]),.dialog select,.dialog textarea{min-height:48px;scroll-margin-block:80px;font-size:16px}.dialog .button{min-height:48px;font-size:14px}.dialog .check-label{gap:11px;line-height:1.8;font-size:12px!important}.dialog .check-label input{width:20px;height:20px;margin-top:2px}.dialog label small,.dialog .fine-print{font-size:12px}.profile-form .field-grid{min-width:0}.profile-form .form-intro{padding-right:24px}.profile-form .step-label{font-size:11px}.episode{min-height:58px;font-size:13px}.episode small{font-size:11px}.detail-buttons{flex-wrap:wrap}.watch-actions{gap:15px}.watch-actions>span{max-width:none;font-size:12px;line-height:1.8}.watch-actions .button{flex-shrink:0;min-height:44px;font-size:13px}.note-actions small{font-size:12px}.note-actions .button{min-height:44px;font-size:13px}.next-lesson{min-height:66px}.next-lesson b{font-size:13px}.profile-controls .text-button,.profile-add{min-height:44px;padding:10px 12px}.profile-tab{min-height:52px}.account-details{font-size:13px}.account-details p,.account-details .text-button{font-size:12px}.stage-chips button,.category-chips button{min-height:42px;font-size:12px}.footer-bottom button,.footer-bottom a{align-items:center;min-height:40px;display:inline-flex}.search-field input{font-size:16px}.search-field>button{min-width:40px;min-height:40px}.approval-notice{overflow-wrap:anywhere}}@media (min-width:721px) and (max-width:1000px){.hero{grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:20px;min-height:410px;padding:35px 0}.hero h1{white-space:normal;font-size:clamp(29px,3.6vw,37px)}.hero-visual{min-width:0;min-height:325px;transform:none}.feature-card{width:min(100%,310px);min-width:0}.feature-art{height:180px}.feature-art .math-art{width:190px;height:155px}.feature-bottom h2{font-size:16px}.hero-visual:before{width:100%;left:0}.orbit{max-width:100%}.hero-buttons{flex-wrap:wrap;gap:10px}.hero-buttons .button{min-height:46px;font-size:12px}.floating-note{padding:12px;font-size:11px;bottom:-12px;right:0}.formula,.circle-float{display:none}.hero-points{flex-wrap:wrap;gap:12px}.lesson-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:28px 18px}.lesson-cover{height:170px}.lesson-grid .cover-title{max-width:83%;font-size:15px;line-height:1.5}.lesson-row{grid-auto-columns:calc(33.3333% - 12px);gap:18px}.series-grid{grid-template-columns:repeat(5,195px)}.profile-bar{align-items:stretch}.profile-controls{justify-content:flex-end}.about-page>h1{font-size:37px}}@media (max-width:720px){.header-inner{padding:0 max(16px,env(safe-area-inset-left));grid-template-rows:62px 50px}.site-header{height:112px}.header-inner>nav{justify-content:space-between;gap:8px}.header-inner>nav button{min-width:44px;font-size:13px}.header-right{gap:8px}.header-right .login{min-height:42px;padding:9px 13px;font-size:12px}.brand-button{margin:0}.brand svg{width:33px;height:33px}.brand b{font-size:27px}.header-right>a{align-items:center;font-size:12px;display:inline-flex}.site-main{padding:0 max(16px,env(safe-area-inset-left))}.hero{grid-template-columns:minmax(0,1fr);gap:0;padding-top:30px}.hero h1{font-size:clamp(30px,8.3vw,42px);line-height:1.42}.hero-kicker{font-size:12px}.hero-copy>p{font-size:14px;line-height:1.9}.hero-buttons{grid-template-columns:1.3fr 1fr;gap:8px;display:grid}.hero-buttons .primary,.hero-buttons .plain{min-height:48px;padding:12px 9px;font-size:12px}.hero-points{flex-wrap:wrap;gap:15px;font-size:11px}.hero-visual{min-height:0;margin:22px 0 8px;padding:15px 12px 36px;overflow:hidden;transform:none}.hero-visual:before{width:100%;height:100%;top:0;left:0;transform:none}.feature-card{border-width:5px;width:min(100%,330px);min-width:0;transform:none}.feature-card:hover{transform:none}.feature-art{height:170px}.feature-art .math-art{height:160px}.feature-bottom h2{font-size:18px}.feature-top,.feature-bottom small{font-size:11px}.orbit{max-width:96%;max-height:95%}.math-float{display:none}.floating-note{padding:11px 15px;font-size:12px;bottom:0;right:12px;transform:none}.floating-note small{font-size:10px}.browse-strip .stage-chips{white-space:normal;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;display:grid;overflow:visible}.browse-strip .stage-chips button{width:100%;min-height:42px;font-size:12px}.browse-strip{padding:19px 0}.lesson-row{grid-auto-columns:78%;gap:14px;margin-right:-16px;padding-right:16px}.lesson-row .lesson-cover{height:180px}.lesson-row .cover-title{max-width:73%;margin-top:16px;font-size:18px}.lesson-row .lesson-title{font-size:14px}.lesson-row .lesson-meta{font-size:11px}.bookmark{justify-content:center;align-items:center;min-width:40px;min-height:40px;display:inline-flex}.section-heading{align-items:center;gap:12px}.section-heading h2{font-size:21px;line-height:1.45}.row-actions{flex-shrink:0}.text-button{min-height:40px;font-size:12px}.eyebrow{font-size:11px}.series-grid{grid-template-columns:repeat(5,184px);margin-right:-16px;padding-right:16px}.series-card h3{font-size:18px}.mission-ribbon{margin-top:27px;padding:23px}.mission-ribbon p{max-width:none;font-size:13px}.mission-ribbon .button{min-height:44px;font-size:12px}.catalog-page .page-heading h1,.learning-page .page-heading h1{font-size:28px;line-height:1.45}.page-heading p{font-size:13px}.page-heading{padding-top:28px}.category-chips{gap:7px}.category-chips button{white-space:normal;text-align:left;font-size:12px}.filter-group{margin-top:20px}.results-heading{align-items:center;gap:14px;font-size:13px}.results-heading>span{font-size:11px}.profile-tabs{flex-wrap:wrap;gap:8px;width:100%}.profile-bar{align-items:stretch;gap:14px;padding:14px}.profile-tab{flex:135px;padding:8px 11px}.profile-add{border:1px dashed #b8c8ad;border-radius:9px;flex:120px}.profile-controls{border-top:1px solid var(--line);flex-wrap:wrap;gap:5px;padding-top:8px;display:flex}.profile-controls .text-button{flex:1;justify-content:center}.learning-stats{gap:12px;padding:23px 12px}.learning-stats b{font-size:29px}.learning-stats span{font-size:11px}.approval-notice{padding:21px}.approval-notice>p{font-size:13px}.approval-notice .button{width:100%;font-size:13px}.empty p{font-size:13px;line-height:1.8}.empty .button{min-height:46px;font-size:13px}.note-row small{overflow-wrap:anywhere;font-size:12px}.note-row b,.about-prose{font-size:14px}.values-grid p,.collaboration p{font-size:13px}.collaboration h2{line-height:1.8}.dialog{border-radius:17px;width:calc(100% - 20px);max-height:calc(100dvh - 20px)}.dialog-wide{width:calc(100% - 20px)}.auth-form{gap:17px;padding:54px 22px 26px}.auth-form h2{font-size:26px}.auth-form>p{font-size:14px;line-height:1.85}.auth-links{grid-template-columns:1fr;gap:4px;display:grid}.auth-links button{text-align:left;min-height:42px;padding:6px 0;font-size:13px}.auth-form .field-grid,.profile-form .field-grid{grid-template-columns:1fr;gap:0}.profile-form{padding:53px 22px 25px}.profile-form label{font-size:13px}.form-intro h2{max-width:100%;font-size:24px}.form-intro p{font-size:13px}.dialog .field-grid label{min-width:0}.detail-art{padding:48px 23px 25px}.detail-art>h2{max-width:100%;padding-right:10px;font-size:24px}.detail-content{padding:22px}.detail-content>p{font-size:13px}.detail-buttons{grid-template-columns:1fr;gap:10px;display:grid}.detail-buttons .button{width:100%;font-size:14px}.episode-no{min-width:25px}.watch-panel{padding:54px 16px 22px}.watch-heading{padding:0 0 18px}.watch-heading h2{font-size:22px;line-height:1.55}.watch-heading p{font-size:12px}.video-frame{border-radius:9px}.watch-actions{grid-template-columns:minmax(0,1fr) auto;align-items:center;display:grid}.watch-actions>span{max-width:none;font-size:11px}.watch-actions .button{padding:10px 12px;font-size:12px}.note-actions{grid-template-columns:1fr;gap:12px;display:grid}.note-actions small{font-size:12px;line-height:1.7}.note-actions .button{width:100%;min-height:46px}.next-lesson b{font-size:14px;line-height:1.7}.policy{padding:53px 23px 28px}.policy p{font-size:13px}.footer-top{gap:22px}.footer-top p{font-size:12px}.footer-bottom{gap:12px;font-size:11px}.footer-bottom button{font-size:12px}.footer-collab>div{flex-wrap:wrap;gap:10px}footer{padding-bottom:max(22px,env(safe-area-inset-bottom));margin:38px 16px 0}.toast{bottom:max(16px,env(safe-area-inset-bottom));width:max-content;max-width:calc(100% - 32px);font-size:13px;line-height:1.8}.toast button{min-width:36px;min-height:36px}}@media (max-width:600px){.lesson-grid{grid-template-columns:minmax(0,1fr);gap:18px}.lesson-grid .lesson-card{border-bottom:1px solid var(--line);grid-template-rows:auto auto auto;grid-template-columns:112px minmax(0,1fr);align-items:start;column-gap:14px;padding-bottom:18px;display:grid}.lesson-grid .lesson-cover{border-radius:11px;grid-area:1/1/5;height:120px;padding:12px}.lesson-grid .cover-title{display:none}.lesson-grid .cover-series{font-size:9px;line-height:1.6}.lesson-grid .lesson-cover .math-art{width:115px;height:103px;bottom:4px;right:-16px}.lesson-grid .lesson-title{text-align:left;overflow-wrap:anywhere;grid-area:1/2;min-height:0;margin:0;font-size:14px;line-height:1.65}.lesson-grid .lesson-meta{flex-wrap:wrap;grid-area:2/2;align-self:center;gap:5px;margin:5px 0 0;font-size:11px;line-height:1.5}.lesson-grid .bookmark{min-width:36px;min-height:36px;margin-left:auto}.lesson-grid .creator{grid-area:3/2;margin:0;font-size:11px}.lesson-grid .progress-track{grid-area:4/2}.lesson-grid .duration{font-size:10px;bottom:9px;right:9px}.lesson-grid .cover-play{width:25px;height:25px;bottom:9px;left:9px}.lesson-grid .complete-label{font-size:9px;top:29px;left:7px}.lesson-grid .lesson-cover .cover-series{max-width:100%}}@media (max-width:359px){.header-inner>nav button{font-size:12px}.header-right{gap:3px}.hero-buttons{grid-template-columns:1fr}.lesson-grid .lesson-card{grid-template-columns:96px minmax(0,1fr);gap:12px}.lesson-grid .lesson-cover{height:114px}.watch-actions{grid-template-columns:1fr}.watch-actions .button{width:100%}.hero h1{font-size:29px}.brand b{font-size:25px}}@media (max-height:540px) and (orientation:landscape){.site-header{position:static}.dialog,.ops-dialog{max-height:calc(100dvh - 12px)}.watch-panel{padding-top:48px}.watch-panel .video-frame{aspect-ratio:16/9;width:auto;max-height:70dvh;margin:auto}.hero-visual{justify-self:center;width:100%;max-width:400px}}@media (max-width:720px){.admin-site-header{height:64px}.admin-site-header .header-inner{grid-template-rows:64px}.admin-site-header .header-inner>nav,.admin-site-header .admin-link{display:none}.admin-site-header .header-right{gap:12px}}@media (max-width:1100px){h1,h2,h3,.lesson-title,.ops-heading{word-break:keep-all;overflow-wrap:anywhere}.dialog-body>.close-button{float:right;z-index:5;margin:10px 10px -54px 0;position:sticky;top:10px;right:auto}}.brand .brand-logo{width:128px;max-width:none;height:auto;display:block}.footer-top .brand .brand-logo{width:115px}@media (max-width:700px){.brand .brand-logo{width:112px}}@media (max-width:900px){.hero .orbit{display:none}}