@font-face{font-family:Golos Text;font-style:normal;font-display:swap;font-weight:400;src:url(../media/golos-text-cyrillic-ext-400-normal.1y852_k37qxdj.woff2)format("woff2"),url(../media/golos-text-cyrillic-ext-400-normal.3yxcq7mwcix1w.woff)format("woff");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Golos Text;font-style:normal;font-display:swap;font-weight:400;src:url(../media/golos-text-cyrillic-400-normal.1-27fr0hrw7uw.woff2)format("woff2"),url(../media/golos-text-cyrillic-400-normal.07rw_txanjujs.woff)format("woff");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Golos Text;font-style:normal;font-display:swap;font-weight:400;src:url(../media/golos-text-latin-ext-400-normal.37wrmjifd2hnz.woff2)format("woff2"),url(../media/golos-text-latin-ext-400-normal.0f1lxpmb4vsiy.woff)format("woff");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,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}@font-face{font-family:Golos Text;font-style:normal;font-display:swap;font-weight:400;src:url(../media/golos-text-latin-400-normal.3vcgn_ptsdx2w.woff2)format("woff2"),url(../media/golos-text-latin-400-normal.2cy5q80j0tcnx.woff)format("woff");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:Golos Text;font-style:normal;font-display:swap;font-weight:500;src:url(../media/golos-text-cyrillic-ext-500-normal.16gakev78ssn3.woff2)format("woff2"),url(../media/golos-text-cyrillic-ext-500-normal.1x1xuzdea3wab.woff)format("woff");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Golos Text;font-style:normal;font-display:swap;font-weight:500;src:url(../media/golos-text-cyrillic-500-normal.0kyc5w2kz2i56.woff2)format("woff2"),url(../media/golos-text-cyrillic-500-normal.0lqs28_dr2wab.woff)format("woff");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Golos Text;font-style:normal;font-display:swap;font-weight:500;src:url(../media/golos-text-latin-ext-500-normal.3epcg468sis00.woff2)format("woff2"),url(../media/golos-text-latin-ext-500-normal.15xdlwsg9k559.woff)format("woff");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,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}@font-face{font-family:Golos Text;font-style:normal;font-display:swap;font-weight:500;src:url(../media/golos-text-latin-500-normal.2s2rhjltmga0w.woff2)format("woff2"),url(../media/golos-text-latin-500-normal.3tot7wi4k3gdx.woff)format("woff");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:Golos Text;font-style:normal;font-display:swap;font-weight:600;src:url(../media/golos-text-cyrillic-ext-600-normal.30fvky6-99z5y.woff2)format("woff2"),url(../media/golos-text-cyrillic-ext-600-normal.05h7wtw6_ouz1.woff)format("woff");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Golos Text;font-style:normal;font-display:swap;font-weight:600;src:url(../media/golos-text-cyrillic-600-normal.33hom1wxmfqq6.woff2)format("woff2"),url(../media/golos-text-cyrillic-600-normal.229df4kvaqgju.woff)format("woff");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Golos Text;font-style:normal;font-display:swap;font-weight:600;src:url(../media/golos-text-latin-ext-600-normal.44azyguzhy9qg.woff2)format("woff2"),url(../media/golos-text-latin-ext-600-normal.1aidwqfw7u2as.woff)format("woff");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,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}@font-face{font-family:Golos Text;font-style:normal;font-display:swap;font-weight:600;src:url(../media/golos-text-latin-600-normal.3y833lnm0s2qg.woff2)format("woff2"),url(../media/golos-text-latin-600-normal.3tq3ukmps5cen.woff)format("woff");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:Golos Text;font-style:normal;font-display:swap;font-weight:700;src:url(../media/golos-text-cyrillic-ext-700-normal.2ouuma6nv6_a0.woff2)format("woff2"),url(../media/golos-text-cyrillic-ext-700-normal.0ouh74j34_qu4.woff)format("woff");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Golos Text;font-style:normal;font-display:swap;font-weight:700;src:url(../media/golos-text-cyrillic-700-normal.0limx4n7tqzns.woff2)format("woff2"),url(../media/golos-text-cyrillic-700-normal.285w3apbh8t_e.woff)format("woff");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Golos Text;font-style:normal;font-display:swap;font-weight:700;src:url(../media/golos-text-latin-ext-700-normal.27nupfk1xn62s.woff2)format("woff2"),url(../media/golos-text-latin-ext-700-normal.3jcs3mmz6buuc.woff)format("woff");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,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}@font-face{font-family:Golos Text;font-style:normal;font-display:swap;font-weight:700;src:url(../media/golos-text-latin-700-normal.2kf5qf-mdvsm_.woff2)format("woff2"),url(../media/golos-text-latin-700-normal.11moi0q6hy3n_.woff)format("woff");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:Golos Text;font-style:normal;font-display:swap;font-weight:800;src:url(../media/golos-text-cyrillic-ext-800-normal.1h03fsyzje8-l.woff2)format("woff2"),url(../media/golos-text-cyrillic-ext-800-normal.1unn_pidpnhkn.woff)format("woff");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Golos Text;font-style:normal;font-display:swap;font-weight:800;src:url(../media/golos-text-cyrillic-800-normal.32pa6hjndvokr.woff2)format("woff2"),url(../media/golos-text-cyrillic-800-normal.2kijoe3bdnqyj.woff)format("woff");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Golos Text;font-style:normal;font-display:swap;font-weight:800;src:url(../media/golos-text-latin-ext-800-normal.3b81xsl-61ihq.woff2)format("woff2"),url(../media/golos-text-latin-ext-800-normal.0yjfea7knj803.woff)format("woff");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,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}@font-face{font-family:Golos Text;font-style:normal;font-display:swap;font-weight:800;src:url(../media/golos-text-latin-800-normal.01xzp2dj8clz6.woff2)format("woff2"),url(../media/golos-text-latin-800-normal.2diyt-6d8_p59.woff)format("woff");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
:root{--font-sans:"Golos Text", ui-sans-serif, system-ui, sans-serif;--font-display:var(--font-sans);--night:#0e1a2b;--signal:#ff5a36;--signal-deep:#c2380f;--chalk:#f6f4ef;--white:#fff;--role-member:#6b7a8f;--role-sky:#2d8cff;--role-violet:#7c5cff;--role-teal:#12b5a0;--role-amber:#f5a524;--bg:#fff;--bg-wash:#f6f4ef;--surface:#fff;--surface-raised:#fff;--text:#0e1a2b;--text-muted:#4f5b6b;--border:#cfd1d5;--border-strong:#9fa3aa;--accent:#ff5a36;--accent-hover:#f04a26;--on-accent:#0e1a2b;--link:#c2380f;--focus-ring:#c2380f;--danger:#d92d20;--success:#0e8f7e;--shadow:0 1px 2px #0e1a2b0f, 0 4px 16px #0e1a2b0f;--radius-sm:4px;--radius:8px;--radius-lg:12px;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#0e1a2b;--bg-wash:#132238;--surface:#16263c;--surface-raised:#1d2f48;--text:#f6f4ef;--text-muted:#a9b4c4;--border:#2a3b53;--border-strong:#46586f;--accent:#ff5a36;--accent-hover:#ff7b5e;--on-accent:#0e1a2b;--link:#ff8a6e;--focus-ring:#ff8a6e;--danger:#ff7a6e;--success:#3fd6c1;--shadow:0 1px 2px #0000004d, 0 4px 16px #00000040;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}}:root[data-theme=dark]{--bg:#0e1a2b;--bg-wash:#132238;--surface:#16263c;--surface-raised:#1d2f48;--text:#f6f4ef;--text-muted:#a9b4c4;--border:#2a3b53;--border-strong:#46586f;--accent:#ff5a36;--accent-hover:#ff7b5e;--on-accent:#0e1a2b;--link:#ff8a6e;--focus-ring:#ff8a6e;--danger:#ff7a6e;--success:#3fd6c1;--shadow:0 1px 2px #0000004d, 0 4px 16px #00000040;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}*,:before,:after{box-sizing:border-box}html{font-family:var(--font-sans);-webkit-font-smoothing:antialiased;font-size:16px;line-height:1.5}body{background:var(--bg);color:var(--text);margin:0}a{color:var(--link)}:focus-visible{outline:2px solid var(--focus-ring);outline-offset:2px}.t-display{font-family:var(--font-display);letter-spacing:-.03em;font-size:60px;font-weight:800;line-height:64px}.t-h1{font-family:var(--font-display);letter-spacing:-.02em;font-size:40px;font-weight:700;line-height:44px}.t-h2{letter-spacing:-.01em;font-size:26px;font-weight:600;line-height:32px}.t-h3{font-size:20px;font-weight:600;line-height:28px}.t-body{font-size:16px;line-height:24px}.t-small{font-size:14px;line-height:20px}.t-label{letter-spacing:.06em;text-transform:uppercase;font-size:12px;font-weight:600;line-height:16px}.t-data{font-variant-numeric:tabular-nums;font-size:14px;font-weight:500;line-height:20px}img.logo-dark{display:none}@media (prefers-color-scheme:dark){:root:not([data-theme=light]) img.logo-light{display:none}:root:not([data-theme=light]) img.logo-dark{display:inline}}:root[data-theme=dark] img.logo-light{display:none}:root[data-theme=dark] img.logo-dark{display:inline}
:root{--page:var(--bg-wash);--card:var(--surface);--cover-plain:#e9e5dc;--cover-plain-text:#0e1a2b80;--measure:70ch;--pattern:url(/brand/pattern/rosterr-pattern-chalk-tile.svg)}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--page:var(--bg);--cover-plain:#1d2f48;--cover-plain-text:#f6f4ef73;--pattern:url(/brand/pattern/rosterr-pattern-night-tile.svg)}}:root[data-theme=dark]{--page:var(--bg);--cover-plain:#1d2f48;--cover-plain-text:#f6f4ef73;--pattern:url(/brand/pattern/rosterr-pattern-night-tile.svg)}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{background:var(--page);color:var(--text);font-family:var(--font-sans);margin:0;font-size:17px;line-height:1.55}img{max-width:100%;display:block}a{color:var(--link)}a:focus-visible,button:focus-visible{outline:2px solid var(--focus-ring);outline-offset:2px}h1,h2,h3,h4,p{margin:0}.skip{position:absolute;left:-9999px}.skip:focus{z-index:10;background:var(--surface);border-radius:var(--radius);padding:8px 12px;top:8px;left:16px}.muted{color:var(--text-muted)}.stack-xs>*+*{margin-top:4px}.stack-sm>*+*{margin-top:10px}.stack>*+*{margin-top:20px}.stack-lg>*+*{margin-top:36px}.t-display{letter-spacing:-.02em;text-wrap:balance;font-size:clamp(34px,5vw,52px);font-weight:800;line-height:1.08}.t-lead{letter-spacing:-.015em;text-wrap:balance;font-size:clamp(26px,3.4vw,36px);font-weight:800;line-height:1.12}.t-card{text-wrap:balance;font-size:20px;font-weight:700;line-height:1.25}.t-section{font-size:22px;font-weight:700}.lede{color:var(--text-muted);max-width:60ch;font-size:20px}.kicker{letter-spacing:.08em;text-transform:uppercase;color:var(--link);font-size:13px;font-weight:700}.kicker a{text-decoration:none}.meta{color:var(--text-muted);font-size:14px}.masthead{background:var(--night);color:var(--chalk)}.masthead-inner,.main,.footer-inner{max-width:1120px;margin:0 auto;padding-left:16px;padding-right:16px}.masthead-inner{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px 24px;padding-top:16px;padding-bottom:16px;display:flex}.brand{color:var(--chalk);align-items:center;gap:12px;text-decoration:none;display:inline-flex}.brand img{width:auto;height:26px}.brand span{border-left:1px solid #f6f4ef4d;padding-left:12px;font-size:18px;font-weight:600}.masthead-nav{flex-wrap:wrap;gap:4px 20px;display:flex}.masthead-nav a{color:var(--chalk);opacity:.85;font-size:15px;font-weight:500;text-decoration:none}.masthead-nav a:hover{opacity:1;text-decoration:underline}.main{padding-top:48px;padding-bottom:72px}.intro>*+*{margin-top:12px}.topics{flex-wrap:wrap;gap:8px;display:flex}.topics a{border:1px solid var(--border);color:var(--text);background:var(--card);border-radius:999px;padding:6px 14px;font-size:15px;text-decoration:none}.topics a:hover{border-color:var(--border-strong)}.topics a[aria-current=page]{background:var(--text);border-color:var(--text);color:var(--bg)}.grid{grid-template-columns:repeat(auto-fill,minmax(min(100%,300px),1fr));gap:24px;display:grid}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);transition:border-color .15s;overflow:hidden}.card:hover{border-color:var(--border-strong)}.card-link{height:100%;color:inherit;flex-direction:column;text-decoration:none;display:flex}.card-link:hover :is(.t-card,.t-lead){text-underline-offset:3px;text-decoration:underline;text-decoration-thickness:2px}.card-cover{aspect-ratio:16/9;background:var(--cover-plain);overflow:hidden}.card-cover img{object-fit:cover;width:100%;height:100%}.card-cover-plain{align-items:flex-end;padding:16px 20px;display:flex;position:relative}.card-cover-plain:before{content:"";background-image:var(--pattern);opacity:.35;background-size:96px;position:absolute;inset:0}.card-cover-plain span{color:var(--cover-plain-text);letter-spacing:-.01em;font-size:28px;font-weight:800;position:relative}.card-text{flex-direction:column;flex:1;gap:10px;padding:20px;display:flex}.card-text .meta{margin-top:auto;padding-top:4px}.card-lead .card-link{grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);display:grid}.card-lead .card-cover{aspect-ratio:auto;min-height:320px}.card-lead .card-text{justify-content:center;padding:32px}@media (max-width:760px){.card-lead .card-link{grid-template-columns:minmax(0,1fr)}.card-lead .card-cover{aspect-ratio:16/9;min-height:0}.card-lead .card-text{padding:20px}}.pager{justify-content:space-between;align-items:center;gap:12px;font-size:15px;display:flex}.empty{color:var(--text-muted);padding:40px 0}.article{max-width:var(--measure);margin:0 auto}.article>*+*{margin-top:32px}.article-cover{border-radius:var(--radius-lg);aspect-ratio:16/9;object-fit:cover;width:100%}.post-body{font-size:18px;line-height:1.7}.post-body>*+*{margin-top:1em}.post-body h2{margin-top:1.6em;font-size:26px;line-height:1.25}.post-body h3,.post-body h4{margin-top:1.4em;font-size:21px;line-height:1.3}.post-body ul,.post-body ol{padding-left:1.3em}.post-body li+li{margin-top:.35em}.post-body blockquote{border-left:4px solid var(--accent);margin-left:0;margin-right:0;padding:4px 0 4px 20px;font-size:21px;line-height:1.5}.post-body code{background:var(--surface-raised);border:1px solid var(--border);border-radius:var(--radius-sm);padding:1px 5px;font-size:.9em}.post-body pre{border-radius:var(--radius);background:var(--night);color:var(--chalk);padding:16px;overflow-x:auto}.post-body pre code{background:0 0;border:0;padding:0}.post-body img{border-radius:var(--radius)}.post-body hr{border:0;border-top:1px solid var(--border)}.panel{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px}.button{background:var(--accent);color:var(--on-accent);border-radius:var(--radius);padding:10px 18px;font-weight:600;text-decoration:none;display:inline-block}.button:hover{background:var(--accent-hover)}.error-art{width:220px}.footer{border-top:1px solid var(--border);background:var(--surface)}.footer-inner{grid-template-columns:minmax(0,2fr) repeat(2,minmax(0,1fr));gap:32px;padding-top:40px;padding-bottom:48px;font-size:15px;display:grid}@media (max-width:640px){.footer-inner{grid-template-columns:minmax(0,1fr)}}.footer-mark{width:auto;height:24px}.footer-links{flex-direction:column;gap:6px;display:flex}.footer-links a{color:var(--text-muted);text-decoration:none}.footer-links a:hover{color:var(--text);text-decoration:underline}@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .footer-mark{content:url(/brand/wordmark/rosterr-wordmark-reversed.svg)}}.sr-only{clip-path:inset(50%);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.row{flex-wrap:wrap;align-items:center;gap:10px;display:flex}button.button{font:inherit;cursor:pointer;border:0;font-weight:600}button.button:disabled{opacity:.6;cursor:default}.button-quiet{color:var(--text);box-shadow:inset 0 0 0 1px var(--border-strong);background:0 0}.button-quiet:hover{background:var(--surface-raised)}.error{color:var(--danger);font-size:15px}.section-head{flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:12px;display:flex}.hero{background:var(--night);color:var(--chalk);position:relative;overflow:hidden}.hero:before{content:"";opacity:.18;background-image:url(/brand/pattern/rosterr-pattern-night-tile.svg);background-size:120px;position:absolute;inset:0}.hero-inner{max-width:1120px;margin:0 auto;padding:56px 16px 64px;position:relative}.hero-inner>*+*{margin-top:14px}.hero .lede{color:#f6f4efcc}.hero .kicker{color:var(--signal)}.hero-stats{color:#f6f4efbf;flex-wrap:wrap;gap:8px 28px;padding-top:8px;font-size:15px;display:flex}.hero-stats strong{color:var(--chalk);font-size:22px;display:block}.progress{align-items:center;gap:10px;display:flex}.progress-bar{background:var(--border);border-radius:999px;flex:1;height:8px;overflow:hidden}.progress-bar span{background:var(--accent);border-radius:inherit;height:100%;display:block}.continue{grid-template-columns:repeat(auto-fill,minmax(min(100%,320px),1fr));gap:16px;display:grid}.continue a{color:inherit;padding:18px 20px;text-decoration:none;display:block}.continue a>*+*{margin-top:8px}.continue a:hover strong{text-decoration:underline}.course-head{grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);align-items:start;gap:32px;display:grid}@media (max-width:860px){.course-head{grid-template-columns:minmax(0,1fr)}}.course-side>*+*{margin-top:14px}.facts{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 16px;margin:0;display:grid}.facts dt{color:var(--text-muted);font-size:13px}.facts dd{margin:0;font-weight:600}.lesson-list{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);margin:0;padding:0;list-style:none;overflow:hidden}.lesson-list li+li{border-top:1px solid var(--border)}.lesson-list a{color:inherit;align-items:flex-start;gap:16px;padding:16px 20px;text-decoration:none;display:flex}.lesson-list a:hover strong{text-decoration:underline}.lesson-list a[aria-current=page]{background:var(--surface-raised);box-shadow:inset 3px 0 0 var(--accent)}.lesson-num{border:1px solid var(--border-strong);border-radius:50%;flex:none;place-items:center;width:30px;height:30px;font-size:14px;font-weight:600;display:grid}.lesson-num.is-done{background:var(--success);border-color:var(--success);color:var(--white)}.lesson-text{flex:1;min-width:0}.lesson-text>*+*{margin-top:2px}.lesson-layout{grid-template-columns:minmax(0,1fr) 320px;align-items:start;gap:40px;display:grid}@media (max-width:960px){.lesson-layout{grid-template-columns:minmax(0,1fr)}}.lesson-main{max-width:var(--measure)}.lesson-main>*+*{margin-top:28px}.lesson-side{position:sticky;top:16px}.lesson-side>*+*{margin-top:12px}.lesson-side .lesson-list a{gap:12px;padding:12px 14px;font-size:15px}.lesson-side .lesson-num{width:26px;height:26px;font-size:13px}.crumbs{color:var(--text-muted);font-size:14px}.crumbs a{color:inherit}.player>*+*{margin-top:8px}.player-frame{aspect-ratio:16/9;border-radius:var(--radius-lg);background:var(--night);position:relative;overflow:hidden}.player-frame iframe{border:0;width:100%;height:100%;position:absolute;inset:0}.player-start{cursor:pointer;width:100%;color:var(--chalk);font:inherit;background:linear-gradient(#0e1a2bd1, #0e1a2bd1), url(/brand/pattern/rosterr-pattern-night-tile.svg) var(--night);background-size:auto,120px;border:0;flex-direction:column;justify-content:center;align-items:center;gap:12px;display:flex;position:absolute;inset:0}.player-icon{background:var(--accent);width:72px;height:72px;color:var(--on-accent);border-radius:50%;place-items:center;transition:transform .15s;display:grid}.player-icon svg{margin-left:4px}.player-start:hover .player-icon{transform:scale(1.06)}.player-label{font-weight:600}.complete{border-top:1px solid var(--border);padding-top:24px}.complete>*+*{margin-top:12px}.complete-done{color:var(--success);font-weight:600}.complete-earned{border:1px solid var(--accent);border-radius:var(--radius-lg);background:var(--card);padding:24px}.pager-links{flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:15px;display:flex}.certificate{background:var(--white);max-width:880px;color:var(--night);border-radius:var(--radius-lg);box-shadow:var(--shadow);text-align:center;border:1px solid var(--border);margin:0 auto;padding:clamp(28px,6vw,64px);position:relative}.certificate:before{content:"";border:2px solid var(--signal);border-radius:var(--radius);pointer-events:none;position:absolute;inset:12px}.certificate .muted{color:#4f5b6b}.certificate>*+*{margin-top:18px}.certificate-logo{height:30px;margin:0 auto}.certificate-kicker{letter-spacing:.12em;text-transform:uppercase;color:#c2380f;font-size:13px;font-weight:700}.certificate-name{letter-spacing:-.02em;word-break:break-word;font-size:clamp(30px,5vw,48px);font-weight:800;line-height:1.1}.certificate-course{font-size:clamp(20px,3vw,28px);font-weight:700}.certificate-foot{color:#4f5b6b;text-align:left;border-top:1px solid #cfd1d5;flex-wrap:wrap;justify-content:space-between;gap:16px;padding-top:18px;font-size:14px;display:flex}.certificate-foot strong{color:var(--night);display:block}@media print{.masthead,.footer,.no-print{display:none!important}body{background:#fff}.main{padding:0}.certificate{box-shadow:none;border:0}}
