/* cyrillic-ext */
@font-face {
  font-family: Golos;
  font-style: normal;
  font-weight: 400 750;
  font-display: swap;
  src: url(/golos-text-v7-0.woff2) format('woff2');
  unicode-range: U+0460-052F, U+1C80-1C8A, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
}
/* cyrillic */
@font-face {
  font-family: Golos;
  font-style: normal;
  font-weight: 400 750;
  font-display: swap;
  src: url(/golos-text-v7-1.woff2) format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
/* latin-ext */
@font-face {
  font-family: Golos;
  font-style: normal;
  font-weight: 400 750;
  font-display: swap;
  src: url(/golos-text-v7-2.woff2) format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
/* latin */
@font-face {
  font-family: Golos;
  font-style: normal;
  font-weight: 400 750;
  font-display: swap;
  src: url(/golos-text-v7-3.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

*{box-sizing:border-box}html{color-scheme:light;--bg:#f5f4f0;--panel:#fff;--text:#242426;--muted:#6d6d73;--line:#dfded9;--soft:#eeede8;--accent:#a88a48;scroll-behavior:smooth}html[data-theme=dark]{color-scheme:dark;--bg:#111112;--panel:#1b1b1d;--text:#f4f3ee;--muted:#aaa9af;--line:#39393c;--soft:#272729}body{margin:0;font-family:Golos,Arial,sans-serif;background:var(--bg);color:var(--text);font-size:16px;line-height:1.55;-webkit-font-smoothing:antialiased}button,input,textarea{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer}a{color:inherit;text-decoration-thickness:1px;text-underline-offset:4px}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:4px}button:disabled{cursor:default;opacity:.55}button svg,.button svg{flex:none}h1,h2,h3,p{margin:0}h1{font-size:clamp(32px,4.8vw,66px);line-height:1.08;letter-spacing:-.045em;overflow-wrap:anywhere;font-weight:500}h2{font-size:25px;line-height:1.25;letter-spacing:-.02em;font-weight:550}h3{font-size:19px;font-weight:550}p{white-space:pre-line;overflow-wrap:anywhere}p+p{margin-top:12px}.top{max-width:1320px;margin:auto;padding:24px 36px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;text-decoration:none;gap:12px;max-width:280px}.brand svg{width:42px;height:54px;flex:none}.brand b{font-size:22px;display:block;letter-spacing:-.04em}.brand small{display:block;font-size:11px;color:var(--muted)}.top nav{display:flex;align-items:center;gap:24px}.top nav a{font-size:14px;text-decoration:none}.icon-button{width:44px;height:44px;display:grid;place-items:center;border:1px solid var(--line);border-radius:50%;background:var(--panel);color:var(--text)}.icon-button svg{width:20px;height:20px}main{max-width:1248px;margin:auto;padding:28px 32px 72px}.intro{padding:40px 0 64px;max-width:820px}.eyebrow{font-size:12px;font-weight:550;color:var(--muted);letter-spacing:.05em;margin-bottom:16px}.lead{font-size:20px;line-height:1.5;color:var(--muted);margin-top:24px;max-width:700px}.pill{font-size:12px;display:inline-flex;border-radius:20px;background:var(--soft);padding:5px 12px}.intro .pill{margin-top:24px}.catalog-tools{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:24px}.search{font-size:12px;color:var(--muted)}input,textarea{border:1px solid var(--line);border-radius:12px;padding:12px 14px;background:var(--panel);color:var(--text);width:100%;min-height:48px}.search input{display:block;margin-top:6px;min-width:250px}.cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.card,.panel{background:var(--panel);border:1px solid var(--line);border-radius:24px;padding:28px;min-width:0}.card{display:flex;flex-direction:column;align-items:flex-start;gap:20px}.card h2 a{text-decoration:none}.card-top{display:flex;justify-content:space-between;width:100%;gap:12px;align-items:center}.card-top .eyebrow{margin:0}.card p,.card-meta{color:var(--muted)}.card-meta{font-size:14px;margin-top:auto}.button{display:inline-flex;gap:12px;justify-content:center;align-items:center;border:1px solid var(--line);background:var(--panel);color:var(--text);border-radius:12px;padding:12px 18px;text-decoration:none;font-weight:500;min-height:48px;line-height:1.35}.primary{background:var(--text);color:var(--bg);border-color:var(--text)}.quiet{background:transparent}.back{display:inline-flex;gap:10px;align-items:center;color:var(--muted);font-size:14px;text-decoration:none;padding:8px 0;min-height:44px;margin-bottom:20px}.back svg{transform:rotate(180deg)}.course-hero{padding:24px 0 36px;max-width:900px}.course-hero .facts{display:flex;flex-wrap:wrap;gap:10px;margin:24px 0}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:28px;align-items:start}.program{display:grid;gap:16px}.program details{padding:0;overflow:hidden}.program summary{padding:24px;cursor:pointer;font-weight:600;min-height:64px}.lesson-row{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:18px 24px;border-top:1px solid var(--line);text-decoration:none;min-height:80px}.lesson-row span{min-width:0}.lesson-row strong{display:block;overflow-wrap:anywhere;font-weight:550}.lesson-row small{display:block;color:var(--muted);font-size:13px;margin-bottom:4px}.lesson-row.locked{color:var(--muted)}.lesson-row.done .marker{background:var(--soft);color:var(--text)}.marker{width:32px;height:32px;border:1px solid var(--line);border-radius:50%;display:grid;place-items:center;flex:none}.aside{position:sticky;top:20px;display:grid;gap:20px}.offer{border-top:3px solid var(--accent);position:relative}.offer p{color:var(--muted);font-size:14px;margin:16px 0}.offer h2{font-size:22px}.offer .button{width:100%;margin-top:10px}.offer .dismiss{position:absolute;top:10px;right:10px;border:0;background:transparent;color:var(--muted);width:36px;height:36px;font-size:22px}.offer .eyebrow{padding-right:30px}.progress p{color:var(--muted);font-size:13px;margin-top:10px}progress{width:100%;height:6px;accent-color:var(--accent);margin-top:14px}.lesson-head{display:flex;align-items:flex-start;gap:24px;justify-content:space-between;margin-bottom:24px}.lesson-head h1{font-size:clamp(28px,3vw,42px)}.lesson-head .eyebrow{margin-bottom:10px}.lesson-main{display:grid;gap:24px}.player-wrap{border-radius:20px;overflow:hidden;background:#0e0e0f;aspect-ratio:16/9}.player-wrap iframe{border:0;width:100%;height:100%;display:block}.body-copy{font-size:17px}.file{display:flex;gap:12px;align-items:center;padding:14px 0;border-bottom:1px solid var(--line);text-decoration:none;min-height:48px}.file span{min-width:0;overflow-wrap:anywhere}.file small{display:block;color:var(--muted)}.task{margin-top:24px;padding-top:24px;border-top:1px solid var(--line)}.task img{max-width:100%;border-radius:12px;margin:16px 0}.task p{margin:14px 0}.task label{display:block;font-size:14px;margin-top:16px}.task input{margin-top:8px}.result{background:var(--soft);border-radius:12px;padding:16px;margin-top:16px}.result p{font-size:14px}.next{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between}.chat-list{max-height:360px;overflow:auto;margin:18px 0;display:grid;gap:12px}.chat-message{background:var(--soft);padding:12px 14px;border-radius:12px;font-size:14px}.chat-message strong{display:block;font-size:12px;margin-bottom:6px}.chat-message.host{border-left:2px solid var(--accent)}.chat-form{display:grid;gap:12px}.note{color:var(--muted);font-size:13px;margin-top:12px}.chat-form textarea{min-height:90px;resize:vertical}.error{color:#bd4141;padding:12px 0}.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);padding:12px 20px;background:var(--text);color:var(--bg);border-radius:12px;max-width:90vw;z-index:20;font-size:14px}.skip{position:fixed;top:-100px}.skip:focus{top:8px;background:var(--panel);z-index:50;padding:10px}footer{border-top:1px solid var(--line);max-width:1184px;margin:0 auto;padding:24px 0 32px;display:flex;gap:24px;flex-wrap:wrap;color:var(--muted);font-size:12px}[hidden]{display:none!important}.empty{grid-column:1/-1}.lesson-tools{display:flex;gap:12px;align-items:center;flex-wrap:wrap}.lesson-tools .button{font-size:14px}.loading{padding:40px;color:var(--muted)}@media(max-width:800px){.top{padding:16px 20px}.top nav{gap:12px}.top nav>a:first-child{display:none}.top .account{font-size:12px}.brand b{font-size:19px}.brand svg{width:32px;height:40px}.brand small{font-size:9px}main{padding:12px 20px 48px}.layout{grid-template-columns:1fr}.aside{position:static}.intro{padding:28px 0 44px}.cards{grid-template-columns:1fr}.catalog-tools{display:block}.catalog-tools .search{display:block;margin-top:20px}.search input{min-width:0}.card,.panel{padding:22px;border-radius:20px}.program .panel{padding:0}.lesson-row{padding:16px 20px}.lead{font-size:18px}.lesson-head{display:block}.lesson-head .button{margin-top:16px}.player-wrap{border-radius:14px}.next{display:grid}.next .button{width:100%}footer{margin:0 20px;gap:16px}.course-hero .actions .primary{flex:1}.lesson-main .offer{margin-top:8px}.lesson-head h1{line-height:1.18}}@media(max-width:380px){.top{gap:8px;padding:14px 16px}.top .account{display:none}main{padding-left:16px;padding-right:16px}.brand{gap:7px}.card,.panel{padding:20px}.program .panel{padding:0}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

.compact-program>summary{cursor:pointer;min-height:44px;font-weight:600}.compact-program .program{margin-top:16px}.compact-program .panel{border:0;padding:0}.compact-program .lesson-row{padding:14px 0}.compact-program .program summary{padding:12px 0}.compact-program .marker{display:none}.task textarea{margin-top:8px;resize:vertical}footer{padding-bottom:max(32px,env(safe-area-inset-bottom))}.brand b{font-size:20px;display:block;white-space:nowrap}.brand svg{overflow:visible}.chat-list p{white-space:pre-wrap}html[data-theme=dark] .error{color:#f39a9a}

.registration-note{margin-top:20px;padding-top:20px;border-top:1px solid var(--line)}.registration-note strong{font-size:16px;line-height:1.3}.registration-actions{margin-top:20px}.registration-actions>.button{width:100%;text-align:center}.registration-actions .note{text-align:center;margin-top:14px}.registration-gate{max-width:720px;padding:36px}.registration-gate h2{font-size:clamp(25px,3vw,34px);max-width:590px;margin-bottom:18px}.registration-gate>p:not(.eyebrow){color:var(--muted)}.registration-gate ul{padding-left:20px;margin:24px 0;line-height:1.7}.registration-gate .registration-actions{max-width:420px}.registration-gate .back{margin:24px 0 0}.account-required{margin-top:6px!important;font-size:12px!important}@media(max-width:800px){.registration-gate{padding:24px}.registration-gate .registration-actions{max-width:none}}

.catalog-intro{padding-top:32px}.catalog-intro h1{margin-top:0}@media(max-width:700px){.catalog-intro{padding-top:22px}}

.registration-badge{border:1px solid #c8b480;background:#eee7d8;color:#715922;padding:7px 14px;font-weight:500;line-height:1.5}html[data-theme=dark] .registration-badge{border-color:#74613a;background:#2c281f;color:#e0c688}

/* Open learning: the same visual language as the public invitation. */
.catalog-intro{max-width:none;display:grid;grid-template-columns:minmax(0,1.35fr) minmax(280px,1fr);gap:36px;align-items:center;padding:26px 0 48px}.catalog-intro-copy{min-width:0;position:relative;z-index:1}.catalog-intro h1{font-size:clamp(38px,4.7vw,62px);line-height:1.06;letter-spacing:-.045em}.catalog-intro h1 em{font-style:normal;color:var(--muted)}.catalog-intro .lead{font-size:17px;line-height:1.65;max-width:550px;margin-top:24px}.catalog-intro .registration-badge{margin-top:22px}.catalog-art{min-width:0;position:relative;--free-paper:#fff;--free-line:#dedad0;--free-player:#29292b;--free-player-line:#444447}.catalog-art:before{content:"";position:absolute;inset:9% 0 5%;border-radius:50%;background:var(--soft);opacity:.45}.catalog-art svg{position:relative;display:block;width:100%;height:auto;max-height:360px}.catalog-section{padding-top:30px;border-top:1px solid var(--line)}.catalog-section .empty{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:14px 32px;padding:30px 32px;border-radius:20px;align-items:center}.catalog-section .empty h2{grid-column:1;font-size:24px;font-weight:500}.catalog-section .empty p{grid-column:1;margin:0;max-width:620px;font-size:15px;line-height:1.6}.catalog-section .empty .button{grid-column:2;grid-row:1/3;align-self:center;white-space:nowrap}.catalog-section .card:not(.empty){border-top:2px solid var(--accent);gap:18px}.catalog-section .card:not(.empty) .button{margin-top:2px}html[data-theme=dark] .catalog-art{--free-paper:#323230;--free-line:#50504a;--free-player:#171719;--free-player-line:#474744}
@media(max-width:1000px) and (min-width:701px){.catalog-intro{gap:20px;grid-template-columns:minmax(0,1.35fr) minmax(220px,1fr)}.catalog-intro h1{font-size:44px}.catalog-intro .lead{font-size:16px}.catalog-section .empty{grid-template-columns:1fr}.catalog-section .empty .button{grid-column:1;grid-row:auto;justify-self:start}}
@media(max-width:700px){.catalog-intro{grid-template-columns:1fr;gap:8px;padding:22px 0 24px}.catalog-intro h1{font-size:clamp(36px,9vw,44px);line-height:1.08}.catalog-intro .lead{font-size:16px;line-height:1.6;margin-top:20px}.catalog-intro .registration-badge{margin-top:18px}.catalog-art{width:220px;max-width:70%;justify-self:center;margin:2px 0}.catalog-art svg{max-height:158px}.catalog-section{padding-top:24px}.catalog-section .empty{display:flex;flex-direction:column;align-items:flex-start;gap:14px;padding:24px;border-radius:18px}.catalog-section .empty h2{font-size:22px;line-height:1.3}.catalog-section .empty .button{white-space:normal;width:100%;margin-top:6px}.catalog-intro .actions{display:grid;grid-template-columns:1fr}.catalog-intro .actions .button{width:100%;font-size:14px}}

/* Original teacher portraits in free-course cards and overview. */
.course-portrait{width:96px;height:96px;flex:0 0 96px;object-fit:cover;object-position:50% 18%;border-radius:24px;background:var(--panel);border:1px solid var(--line)}
.card-top:has(.course-portrait){justify-content:flex-start;gap:18px}.card-top:has(.course-portrait)>.pill{margin-left:auto}.course-hero>.course-portrait{float:right;width:144px;height:144px;margin:0 0 24px 32px}.course-hero::after{content:"";display:block;clear:both}
@media(max-width:600px){.course-portrait{width:72px;height:72px;flex-basis:72px;border-radius:18px}.card-top:has(.course-portrait){gap:12px}.course-hero>.course-portrait{float:none;width:96px;height:96px;margin:0 0 24px}}

/* Cover-led course catalogue: one title, one factual line, one action. */
.cards .course-tile{padding:0;gap:0;overflow:hidden;border:1px solid var(--line);border-radius:24px;align-items:stretch}
.course-tile-cover{display:block;aspect-ratio:16/9;background:var(--soft);overflow:hidden;line-height:0}
.course-tile-cover img{display:block;width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
@media(hover:hover){.course-tile-cover:hover img{transform:scale(1.025)}}
.course-tile-body{padding:24px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}
.course-tile-body>div{min-width:0;flex:1 1 220px}.course-tile-body h2{font-size:24px;line-height:1.2;font-weight:600;letter-spacing:-.025em;margin:0}
.course-tile-body .course-tile-meta{margin:10px 0 0;font-size:14px;line-height:1.5;color:var(--muted)}
.course-tile-body>.button{white-space:nowrap;flex:0 0 auto;font-size:14px;padding:11px 14px}
@media(max-width:600px){.cards .course-tile{border-radius:20px}.course-tile-body{padding:20px;gap:18px}.course-tile-body>div{flex-basis:100%}.course-tile-body h2{font-size:23px}.course-tile-body>.button{width:100%;justify-content:space-between}}
@media(prefers-reduced-motion:reduce){.course-tile-cover img{transition:none}.course-tile-cover:hover img{transform:none}}

.course-heading{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:12px 0 36px}.course-heading h1{font-size:clamp(28px,3.6vw,46px);line-height:1.12;letter-spacing:-.035em}.course-heading p{font-size:16px;color:var(--muted);margin:12px 0 0}.course-heading>.button{flex:none;font-size:14px}
.lesson-library{display:grid;gap:40px}.lesson-section>h2{font-size:22px;font-weight:550;margin:0 0 20px}.lesson-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}.lesson-card{min-width:0;border-radius:20px;transition:transform .25s ease}.lesson-thumb{display:block;position:relative;aspect-ratio:16/9;overflow:hidden;border-radius:18px;background:var(--soft);line-height:0;border:1px solid var(--line)}.lesson-thumb img{display:block;width:100%;height:100%;object-fit:cover;transition:transform .35s ease}.lesson-fallback{display:grid;place-items:center;height:100%;color:var(--muted);font-size:24px;line-height:1.2}.thumb-action{position:absolute;right:16px;bottom:16px;width:42px;height:42px;border-radius:50%;display:grid;place-items:center;background:#242427;color:#fff;box-shadow:0 4px 16px #0002;opacity:0;transform:translateX(-5px);transition:opacity .2s,transform .2s}.thumb-done{position:absolute;left:14px;bottom:14px;background:#242427;color:#fff;border-radius:8px;padding:9px 12px;font-size:12px;line-height:1}.lesson-card-copy{padding:16px 2px 6px}.lesson-card-copy p{font-size:14px;color:var(--muted);margin:0 0 8px}.lesson-card-copy h3{font-size:21px;line-height:1.35;font-weight:550;letter-spacing:-.015em}.lesson-card-copy h3 a{text-decoration:none}.course-conversion{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(260px,1fr);gap:24px;margin-top:52px;padding-top:36px;border-top:1px solid var(--line)}.course-conversion .offer{border-top:1px solid var(--line)}.course-conversion .offer h2{font-size:26px}.course-conversion .offer .button{width:auto;margin-right:8px}.course-conversion .offer p{max-width:540px}.progress-heading{display:flex;align-items:center;justify-content:space-between;gap:16px}.progress-heading span{color:var(--muted);font-size:14px}.progress .button{margin-top:20px;width:100%;justify-content:space-between;font-size:15px}.progress-login{display:block;text-align:center;font-size:12px;color:var(--muted);margin-top:14px;text-underline-offset:4px}.progress progress{appearance:none;border:0;border-radius:10px;overflow:hidden;background:var(--soft);height:5px;margin:20px 0 6px}.progress progress::-webkit-progress-bar{background:var(--soft)}.progress progress::-webkit-progress-value{background:var(--accent);border-radius:10px}.progress progress::-moz-progress-bar{background:var(--accent)}
.button,.panel,.course-tile{transition:background-color .2s,border-color .2s,box-shadow .2s,transform .2s}.button svg{transition:transform .2s}.button:focus-visible,.lesson-thumb:focus-visible,.course-tile-cover:focus-visible{outline:2px solid var(--accent);outline-offset:4px}.panel:focus-within{border-color:var(--accent)}
@media(hover:hover){.course-tile:hover{border-color:var(--accent);box-shadow:0 12px 28px #0000000d;transform:translateY(-3px)}.lesson-card:hover .lesson-thumb img{transform:scale(1.025)}.lesson-card:hover .thumb-action{opacity:1;transform:none}.lesson-card:hover h3 a{color:var(--accent)}.panel:hover{border-color:color-mix(in srgb,var(--accent) 45%,var(--line))}.button:hover{background:var(--soft);border-color:var(--accent)}.button.primary:hover{background:var(--text);color:var(--bg);filter:brightness(.94)}.button:hover svg{transform:translateX(3px)}}
.lesson-card:focus-within .thumb-action{opacity:1;transform:none}.button:active{transform:translateY(1px)}
@media(max-width:800px){.course-heading{padding:8px 0 28px;gap:16px;align-items:flex-start}.course-heading h1{font-size:30px}.course-heading>.button{padding:10px 12px;min-height:44px}.lesson-grid{grid-template-columns:1fr;gap:26px}.lesson-section>h2{font-size:20px;margin-bottom:16px}.lesson-card-copy h3{font-size:20px}.course-conversion{grid-template-columns:1fr;margin-top:36px;padding-top:28px}.thumb-action{opacity:1;transform:none;width:36px;height:36px;right:12px;bottom:12px}}
@media(max-width:420px){.course-heading{display:block}.course-heading>.button{margin-top:18px}.course-heading h1{font-size:28px}.lesson-card-copy h3{font-size:19px}}
@media(prefers-reduced-motion:reduce){.button,.button svg,.panel,.course-tile,.lesson-card,.lesson-thumb img,.thumb-action{transition:none}.course-tile:hover,.lesson-card:hover .lesson-thumb img,.button:hover svg{transform:none}}

/* Restrained emphasis: gold belongs to the paid offer, not every control. */
:focus-visible{outline:2px solid var(--text);outline-offset:3px}
input:focus-visible,textarea:focus-visible{outline:1px solid var(--text);outline-offset:2px;box-shadow:none;border-color:var(--text)}
.button:focus-visible,.lesson-thumb:focus-visible,.course-tile-cover:focus-visible{outline-color:var(--text)}
.panel:focus-within{border-color:var(--line)}
.offer,.course-conversion .offer{border-top:2px solid var(--accent)}.offer .eyebrow{padding-right:0}
.catalog-section .card.course-tile{border-top:1px solid var(--line)}
.progress progress::-webkit-progress-value{background:var(--text)}.progress progress::-moz-progress-bar{background:var(--text)}
@media(hover:hover){.course-tile:hover,.panel:hover,.button:hover{border-color:color-mix(in srgb,var(--text) 30%,var(--line))}.lesson-card:hover h3 a{color:var(--text);text-decoration:underline;text-underline-offset:4px}.offer:hover{border-top-color:var(--accent)}}
.share-dialog{width:min(520px,calc(100vw - 32px));max-height:calc(100dvh - 40px);margin:auto;padding:24px;border:1px solid var(--line);border-radius:24px;background:var(--panel);color:var(--text);box-shadow:0 24px 80px #0003;overflow:auto}
.share-dialog::backdrop{background:#0007;backdrop-filter:blur(5px)}.share-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:20px}.share-heading h2{font-size:24px}.share-cover{display:block;width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;border-radius:14px}.share-name{font-size:18px;line-height:1.4;font-weight:550;margin:18px 0}.share-url{display:block;font-size:12px;color:var(--muted)}.share-url input{display:block;margin-top:6px;font-size:14px}.share-actions{display:flex;gap:10px;margin-top:16px}.share-actions .button{flex:1;font-size:14px}.share-more{width:100%;margin-top:10px;font-size:14px}.share-dialog [data-status]:empty{display:none}
@media(max-width:600px){.share-dialog{width:100%;max-height:calc(100dvh - 20px);margin:auto 0 0;border-radius:24px 24px 0 0;padding:20px 20px max(24px,env(safe-area-inset-bottom))}.share-actions{flex-direction:column}.share-name{font-size:16px}}

/* Homework is a first-class course element, with an honest practice preview. */
.practice-thumb .lesson-fallback{padding:0;color:var(--text);background:var(--soft)}.practice-art{display:block;width:100%;height:100%;max-height:360px;transition:transform .35s ease}.practice-detail{padding:0;overflow:hidden}.practice-preview{aspect-ratio:16/9;display:grid;place-items:center;background:var(--soft);border-bottom:1px solid var(--line);color:var(--text)}.practice-preview img{width:100%;height:100%;object-fit:cover}.practice-detail-copy{padding:28px}.practice-title-row{display:flex;gap:16px;align-items:center;justify-content:space-between;margin-bottom:16px}.practice-title-row .eyebrow{margin:0}.practice-title-row .button{font-size:13px;min-height:44px;padding:10px 14px}.practice-detail h1{font-size:clamp(26px,3vw,38px);line-height:1.2;letter-spacing:-.025em}.practice-facts{display:flex;flex-wrap:wrap;gap:10px 24px;color:var(--muted);font-size:14px;margin-top:18px}.practice-invitation{color:var(--muted);font-size:16px;line-height:1.6;margin-top:26px;max-width:520px}.practice-start{display:flex;align-items:center;gap:20px;margin-top:24px}.practice-start .progress-login{margin:0;font-size:14px}.practice-title-row+.eyebrow{margin:0}
@media(hover:hover){.lesson-card:hover .practice-art{transform:translateY(-3px) rotate(1deg)}}
@media(max-width:600px){.practice-detail{padding:0}.practice-detail-copy{padding:22px}.practice-title-row{gap:10px}.practice-detail h1{font-size:27px}.practice-start{flex-direction:column;align-items:stretch;gap:18px}.practice-start .button{width:100%}.practice-facts{font-size:13px}.practice-invitation{font-size:15px}}
@media(prefers-reduced-motion:reduce){.practice-art{transition:none}.lesson-card:hover .practice-art{transform:none}}

.file-row{display:flex;gap:16px;align-items:center;border-bottom:1px solid var(--line)}.file-open{flex:1;min-width:0;border:0;background:transparent;color:var(--text);text-align:left;font:inherit;cursor:pointer}.file-open>svg{flex-shrink:0}.file-download{font-size:14px;padding:12px 0;text-underline-offset:4px;white-space:nowrap}.file-open:hover span{text-decoration:underline;text-underline-offset:4px}.share-practice{aspect-ratio:16/9;border-radius:14px;background:var(--soft);overflow:hidden}
.material-viewer{--ink:var(--text);--card:var(--panel)}.material-viewer .material-preview{width:100%;max-width:none;margin:0}.material-viewer svg{width:20px;height:20px;flex-shrink:0}.material-viewer button:focus-visible{outline-color:var(--text)}
@media(max-width:600px){.file-row{flex-wrap:wrap;gap:0;padding-bottom:8px}.file-open{flex-basis:100%}.file-download{padding:4px 0 10px}.material-viewer .material-preview{padding:8px}}

.progress-login{min-height:44px;display:flex;align-items:center;justify-content:center}.practice-preview{max-height:320px;aspect-ratio:auto}.practice-preview img{max-height:320px;object-fit:contain}.practice-detail-copy{padding:24px 28px}.practice-invitation{margin-top:18px}.practice-start{margin-top:18px}@media(max-width:600px){.practice-preview{aspect-ratio:16/9;max-height:none}.practice-preview img{max-height:none}.practice-detail-copy{padding:22px}}

/* The same chat works inline and in a resizable window. */
.chat-heading{display:flex;align-items:center;justify-content:space-between;gap:12px}.chat-heading h2{margin:0}.chat-heading .button{font-size:13px;padding:8px 12px;min-height:44px}.chat-heading svg{flex:none}.chat-title{font-size:14px;color:var(--muted);margin:10px 0;overflow-wrap:anywhere}.chat-form input,.chat-form textarea{font-size:16px}.chat-message{overflow-wrap:anywhere}.chat-list{overscroll-behavior:contain;overflow-anchor:none}.player-wrap{position:relative}.live-poster{width:100%;height:100%;background:var(--soft)}.live-poster img{width:100%;height:100%;object-fit:cover;display:block}.chat-window .top,.chat-window footer{display:none}.chat-window main{padding:12px;width:100%;max-width:none}.chat-window #app{height:calc(100dvh - 24px);min-height:540px}.chat-window .chat-panel{height:100%;display:flex;flex-direction:column;padding:20px;margin:0}.chat-window .chat-list{flex:1;min-height:90px;max-height:none;align-content:start}.chat-window .chat-form{flex:none;gap:10px}.chat-window .chat-form textarea{min-height:72px;max-height:160px}.chat-window #chat-status{min-height:18px;margin-top:8px}.chat-window .chat-title{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.chat-window .chat-form label{font-size:13px}.chat-window .chat-form input{padding:10px 12px}.chat-window .chat-form .button{min-height:44px}
@media(max-width:480px){.chat-heading{flex-wrap:wrap}.chat-heading .button{margin-left:auto}.chat-window main{padding:8px}.chat-window #app{height:calc(100dvh - 16px)}.chat-window .chat-panel{padding:16px;border-radius:16px}}

/* Quiet first paint while the page module loads; no transient service copy. */
.page-placeholder{min-height:65vh;padding-top:24px}.placeholder-title,.placeholder-content{background:var(--soft);border-radius:12px}.placeholder-title{width:min(60%,480px);height:40px;margin-bottom:40px}.placeholder-content{width:100%;height:clamp(220px,32vw,460px);border-radius:20px}.chat-window .page-placeholder{padding-top:8px;min-height:0}.chat-window .placeholder-title{height:28px;margin-bottom:24px}.chat-window .placeholder-content{height:65vh}

/* Detached composer keeps its draft and leaves a quiet return control. */
.chat-is-detached{height:auto!important;min-height:0!important;align-self:start}.chat-is-detached>*:not(.chat-detached-bar){display:none!important}.chat-detached-bar:not([hidden]){display:flex;align-items:center;justify-content:space-between;gap:12px;width:100%;font-size:14px}.chat-detached-bar button{min-height:44px;flex-shrink:0;font-size:14px;padding:10px 14px}.chat-system-note{padding:12px 14px;margin:8px 0 14px;border-radius:12px;background:rgba(128,128,128,.09);font-size:13px;line-height:1.5;overflow-wrap:anywhere}.chat-system-note span{font-size:11px;opacity:.65}.chat-system-note p{margin:4px 0 0;font-size:inherit;color:inherit}@media(max-width:400px){.chat-detached-bar:not([hidden]){flex-wrap:wrap}.chat-detached-bar button{margin-left:auto}}

.lesson-engagement:not([hidden]){display:flex;align-items:center;justify-content:space-between;gap:12px;margin:14px 0 0;flex-wrap:wrap}.lesson-engagement .note{margin:0;font-size:13px}.like-button{margin-left:auto;min-height:44px;padding:9px 15px!important;font-size:14px!important;gap:9px!important}.like-button[aria-pressed="true"]{background:var(--text);color:var(--panel);border-color:var(--text)}#like-count{font-variant-numeric:tabular-nums;min-width:1ch}.engagement-error{font-size:13px;margin:8px 0 0}

.element-views{display:inline-block;margin-left:12px;font-size:inherit;color:var(--muted)}@media(max-width:600px){.element-views{display:block;margin:4px 0 0}}