@font-face{font-family:Open Sans;font-style:normal;font-weight:300 800;font-stretch:100%;font-display:swap;src:url(../media/3ce154ad7d54dc86-s.1-9go8whdf-l6.woff2)format("woff2");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Open Sans;font-style:normal;font-weight:300 800;font-stretch:100%;font-display:swap;src:url(../media/7cdbb9ca823c0a73-s.1h6d36qg8q9eb.woff2)format("woff2");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Open Sans;font-style:normal;font-weight:300 800;font-stretch:100%;font-display:swap;src:url(../media/1e239d59b95c7889-s.2z2_lz8ulsj_0.woff2)format("woff2");unicode-range:U+1F??}@font-face{font-family:Open Sans;font-style:normal;font-weight:300 800;font-stretch:100%;font-display:swap;src:url(../media/a421df443b3f383b-s.36lh57wvljuff.woff2)format("woff2");unicode-range:U+370-377,U+37A-37F,U+384-38A,U+38C,U+38E-3A1,U+3A3-3FF}@font-face{font-family:Open Sans;font-style:normal;font-weight:300 800;font-stretch:100%;font-display:swap;src:url(../media/c2873153dc73d9e3-s.1em1pp1frbjrf.woff2)format("woff2");unicode-range:U+307-308,U+590-5FF,U+200C-2010,U+20AA,U+25CC,U+FB1D-FB4F}@font-face{font-family:Open Sans;font-style:normal;font-weight:300 800;font-stretch:100%;font-display:swap;src:url(../media/d38a53d0ba90b32d-s.398ve1q5qj3un.woff2)format("woff2");unicode-range:U+302-303,U+305,U+307-308,U+310,U+312,U+315,U+31A,U+326-327,U+32C,U+32F-330,U+332-333,U+338,U+33A,U+346,U+34D,U+391-3A1,U+3A3-3A9,U+3B1-3C9,U+3D1,U+3D5-3D6,U+3F0-3F1,U+3F4-3F5,U+2016-2017,U+2034-2038,U+203C,U+2040,U+2043,U+2047,U+2050,U+2057,U+205F,U+2070-2071,U+2074-209F,U+20D0-20DC,U+20E1,U+20E5-20EF,U+2100-2112,U+2114-2115,U+2117-2121,U+2123-214F,U+2190,U+2192,U+2194-21AE,U+21B0-21E5,U+21F1-21F2,U+21F4-2211,U+2213-2214,U+2216-22FF,U+2308-230B,U+2310,U+2319,U+231C-2321,U+2336-237A,U+237C,U+2395,U+239B-23B7,U+23D0,U+23DC-23E1,U+2474-2475,U+25AF,U+25B3,U+25B7,U+25BD,U+25C1,U+25CA,U+25CC,U+25FB,U+266D-266F,U+27C0-27FF,U+2900-2AFF,U+2B0E-2B11,U+2B30-2B4C,U+2BFE,U+3030,U+FF5B,U+FF5D,U+1D400-1D7FF,U+1EE??}@font-face{font-family:Open Sans;font-style:normal;font-weight:300 800;font-stretch:100%;font-display:swap;src:url(../media/5b0229109f6656bb-s.3tlvbu8v6d928.woff2)format("woff2");unicode-range:U+1-C,U+E-1F,U+7F-9F,U+20DD-20E0,U+20E2-20E4,U+2150-218F,U+2190,U+2192,U+2194-2199,U+21AF,U+21E6-21F0,U+21F3,U+2218-2219,U+2299,U+22C4-22C6,U+2300-243F,U+2440-244A,U+2460-24FF,U+25A0-27BF,U+28??,U+2921-2922,U+2981,U+29BF,U+29EB,U+2B??,U+4DC0-4DFF,U+FFF9-FFFB,U+10140-1018E,U+10190-1019C,U+101A0,U+101D0-101FD,U+102E0-102FB,U+10E60-10E7E,U+1D2C0-1D2D3,U+1D2E0-1D37F,U+1F0??,U+1F100-1F1AE,U+1F1E6-1F1FF,U+1F30D-1F30F,U+1F315,U+1F31C,U+1F31E,U+1F320-1F32C,U+1F336,U+1F378,U+1F37D,U+1F382,U+1F393-1F39F,U+1F3A7-1F3A8,U+1F3AC-1F3AF,U+1F3C2,U+1F3C4-1F3C6,U+1F3CA-1F3CE,U+1F3D4-1F3E0,U+1F3ED,U+1F3F1-1F3F3,U+1F3F5-1F3F7,U+1F408,U+1F415,U+1F41F,U+1F426,U+1F43F,U+1F441-1F442,U+1F444,U+1F446-1F449,U+1F44C-1F44E,U+1F453,U+1F46A,U+1F47D,U+1F4A3,U+1F4B0,U+1F4B3,U+1F4B9,U+1F4BB,U+1F4BF,U+1F4C8-1F4CB,U+1F4D6,U+1F4DA,U+1F4DF,U+1F4E3-1F4E6,U+1F4EA-1F4ED,U+1F4F7,U+1F4F9-1F4FB,U+1F4FD-1F4FE,U+1F503,U+1F507-1F50B,U+1F50D,U+1F512-1F513,U+1F53E-1F54A,U+1F54F-1F5FA,U+1F610,U+1F650-1F67F,U+1F687,U+1F68D,U+1F691,U+1F694,U+1F698,U+1F6AD,U+1F6B2,U+1F6B9-1F6BA,U+1F6BC,U+1F6C6-1F6CF,U+1F6D3-1F6D7,U+1F6E0-1F6EA,U+1F6F0-1F6F3,U+1F6F7-1F6FC,U+1F700-1F80B,U+1F810-1F847,U+1F850-1F859,U+1F860-1F887,U+1F890-1F8AD,U+1F8B0-1F8BB,U+1F8C0-1F8C1,U+1F8D0-1F8D8,U+1F900-1F90B,U+1F93B,U+1F946,U+1F984,U+1F996,U+1F9E9,U+1FA00-1FA6F,U+1FA70-1FA7C,U+1FA80-1FAC6,U+1FAC8,U+1FACC-1FADD,U+1FADF-1FAEB,U+1FAEF-1FAFA,U+1FB??}@font-face{font-family:Open Sans;font-style:normal;font-weight:300 800;font-stretch:100%;font-display:swap;src:url(../media/ca19bc83075b2625-s.2f6i6rjizi5dm.woff2)format("woff2");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Open Sans;font-style:normal;font-weight:300 800;font-stretch:100%;font-display:swap;src:url(../media/2aec202ebfcf461b-s.261mkozpp7zc7.woff2)format("woff2");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-20C4,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Open Sans;font-style:normal;font-weight:300 800;font-stretch:100%;font-display:swap;src:url(../media/cf514f5d0007dafa-s.p.1wc2mf9hp9pav.woff2)format("woff2");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:Open Sans Fallback;src:local(Arial);ascent-override:101.65%;descent-override:27.86%;line-gap-override:0.0%;size-adjust:105.15%}.open_sans_4382217f-module__g7W13G__className{font-family:Open Sans,Open Sans Fallback;font-style:normal}.open_sans_4382217f-module__g7W13G__variable{--font-open-sans:"Open Sans", "Open Sans Fallback"}
:root{--doi-purple:#4f2cce;--doi-purple-dark:#3d20a8;--doi-purple-tint:#efebfc;--doi-gold:#ffc53d;--doi-black:#000;--bg:#f7f7f7;--surface:#fff;--text:#020817;--muted:#64748b;--line:#e2e8f0;--ok:#15803d;--warn:#b45309;--error:#dc2626;--radius:4px;--radius-card:12px;--font:var(--font-open-sans), "Open Sans", ui-sans-serif, system-ui, sans-serif}*{box-sizing:border-box}html{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;overflow-x:clip}body{background:var(--bg);min-height:100vh;color:var(--text);font-family:var(--font);flex-direction:column;margin:0;font-size:16px;line-height:1.6;display:flex}a{color:var(--doi-purple)}.site-header{background:var(--doi-black);color:#fff}.site-header .inner,.site-footer .inner,main{width:100%;max-width:800px;margin:0 auto;padding:0 16px}.site-header .inner{justify-content:space-between;align-items:center;gap:16px;min-height:80px;display:flex}.brand img{width:auto;height:56px;display:block}.site-nav{align-items:center;gap:20px;display:flex}.site-nav a:not(.button),.nav-button{color:#fff;font-size:17px;text-decoration:none}.site-nav form{margin:0}.site-nav .nav-button,.site-nav .nav-button:hover{cursor:pointer;font-family:inherit;font-weight:400;line-height:inherit;background:0 0;border:0;padding:0}.site-nav a:not(.button):hover,.nav-button:hover{text-decoration:underline}main{flex:1;padding-top:40px;padding-bottom:72px}.site-footer{background:var(--doi-black);color:#94a3b8;font-size:14px}.site-footer .inner{padding-top:20px;padding-bottom:20px}.site-footer a{color:inherit}.consent{margin-top:20px;line-height:1.5}h1{margin:0 0 12px;font-size:36px;font-weight:700;line-height:1.15}h2{margin:32px 0 8px;font-size:22px;font-weight:700;line-height:1.3}h3{margin:0 0 4px;font-size:18px;font-weight:700}.muted{color:var(--muted)}.hero{background:linear-gradient(to right, #000 50%, var(--doi-purple));color:#fff;text-align:center;margin:-40px calc(50% - 50vw) 40px}.hero-inner{max-width:800px;margin:0 auto;padding:72px 16px}.hero h1{margin-bottom:16px;font-size:48px}.hero .lead{color:#cbd5e1;max-width:640px;margin:0 auto;font-size:20px;line-height:1.5}.eyebrow{color:var(--doi-gold);letter-spacing:.04em;text-transform:uppercase;margin:0 0 12px;font-size:14px;font-weight:600}.section-title{text-align:center;margin:8px 0 20px;font-size:32px}.parts{gap:16px;margin:0;padding:0;list-style:none;display:grid}.parts .part{align-items:flex-start;gap:16px;margin:0;display:flex}.part p{margin:0}.part-number{background:var(--doi-purple);color:#fff;border-radius:50%;flex:none;place-items:center;width:36px;height:36px;font-weight:700;display:grid}.card{background:var(--surface);border-radius:var(--radius-card);margin:16px 0;padding:24px}.banner{border-radius:var(--radius);background:var(--surface);border-left:4px solid var(--doi-purple);margin:0 0 20px;padding:12px 16px}.banner.error{border-left-color:var(--error);color:var(--error)}.banner.ok{border-left-color:var(--ok);color:var(--ok)}.steps{margin:0;padding:0;list-style:none}.steps li{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:12px;padding:14px 0;display:flex}.steps li:last-child{border-bottom:0}.steps a{flex:none;font-weight:600;text-decoration:none}.steps a:hover{text-decoration:underline}.status{text-align:right;font-size:14px}.status.done{color:var(--ok);font-weight:600}.status.todo{color:var(--warn)}label{margin:18px 0 6px;font-weight:600;display:block}.hint{color:var(--muted);font-size:14px;font-weight:400;display:block}input[type=text],input[type=email],input[type=password],input[type=url],input[type=number],input[type=tel],select,textarea{width:100%;font:inherit;color:inherit;background:var(--surface);border-radius:var(--radius);border:1px solid #c9c9cf;padding:11px 12px}input:focus,textarea:focus{outline:2px solid var(--doi-purple);outline-offset:-1px;border-color:var(--doi-purple)}textarea{resize:vertical;min-height:120px}input[type=file]{font:inherit;max-width:100%}input[type=radio],input[type=checkbox]{accent-color:var(--doi-purple)}.check{align-items:flex-start;gap:10px;font-weight:400;display:flex}.check input{margin-top:6px}.button,button{font:inherit;border:1px solid var(--doi-purple);background:var(--doi-purple);color:#fff;border-radius:var(--radius);cursor:pointer;padding:10px 20px;font-weight:600;line-height:1.4;text-decoration:none;display:inline-block}.button:hover,button:hover{background:var(--doi-purple-dark);border-color:var(--doi-purple-dark)}.button.secondary,button.secondary{color:var(--doi-purple);background:0 0}.button.secondary:hover{background:var(--doi-purple-tint)}.button.ghost{color:#fff;background:0 0;border-color:#fff}.button.ghost:hover{background:#ffffff1a}.site-nav .button{padding:8px 16px}.actions{flex-wrap:wrap;align-items:center;gap:12px;margin-top:24px;display:flex}.actions.center{justify-content:center;margin-top:32px}fieldset:disabled{opacity:.7}.item{border-bottom:1px solid var(--line);padding:16px 0}.item:last-of-type{border-bottom:0}.item legend{margin-bottom:10px;padding:0;font-weight:600}.item fieldset{border:0;margin:0;padding:0}.scale{grid-template-columns:repeat(5,1fr);gap:6px;display:grid}.scale label{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);text-align:center;cursor:pointer;margin:0;padding:8px 6px;font-size:13px;font-weight:400;line-height:1.3}.scale label:has(input:checked){border-color:var(--doi-purple);background:var(--doi-purple-tint);color:var(--doi-purple-dark);font-weight:600}.scale input{margin:0 auto 4px;display:block}@media (max-width:560px){.hero h1{font-size:34px}.hero .lead{font-size:17px}.brand img{height:44px}.site-nav{gap:12px}.site-nav .button{display:none}.scale{grid-template-columns:1fr}.scale label{text-align:left;gap:8px;display:flex}.scale input{margin:0}}.progress{background:#e2e0f3;border-radius:4px;height:8px;margin:8px 0 20px;overflow:hidden}.progress span{background:var(--doi-purple);height:100%;display:block}.trait-head{justify-content:space-between;align-items:baseline;gap:12px;display:flex}.trait-head strong{color:var(--doi-purple)}.facets{color:var(--muted);margin:8px 0 0;padding-left:18px;font-size:14px}.rich p:first-child{margin-top:0}.recorder{margin-top:8px}.recorder-stage,.recorder-saved{max-width:480px;position:relative}.recorder video{aspect-ratio:16/9;border-radius:var(--radius-card);object-fit:cover;background:#000;width:100%;display:block}.recorder-saved video{object-fit:contain}.recorder-badge{color:#fff;background:#000000b3;border-radius:999px;padding:4px 10px;font-size:14px;font-weight:600;position:absolute;top:12px;left:12px}.recorder-badge:first-letter{color:#ef4444}.recorder-error{color:var(--error);margin:8px 0 0}.link-button{color:var(--doi-purple);background:0 0;border:0;padding:0;font-weight:400;text-decoration:underline}.link-button:hover{background:0 0}.file-current{color:var(--muted);margin-top:4px;font-size:14px}.course-nav{border-bottom:1px solid var(--line);flex-wrap:wrap;align-items:center;gap:8px 20px;margin:-16px 0 28px;padding-bottom:12px;display:flex}.course-nav a{font-weight:600;text-decoration:none}.course-nav a:hover{text-decoration:underline}.crumbs{color:var(--muted);margin:0 0 8px;font-size:14px}.crumbs a{color:var(--muted)}.pill{vertical-align:middle;background:var(--doi-purple-tint);color:var(--doi-purple-dark);border-radius:999px;padding:5px 9px;font-size:12px;font-weight:600;line-height:1;display:inline-block}.pill.accepted{color:var(--ok);background:#dcfce7}.pill.revise{color:var(--warn);background:#fef3c7}.prose{font-size:17px;line-height:1.7}.prose h2{margin:40px 0 12px;font-size:26px}.prose h3{margin:28px 0 8px;font-size:20px}.prose h4{margin:20px 0 6px;font-size:17px}.prose ul,.prose ol{padding-left:22px}.prose li+li{margin-top:4px}.prose table{border-collapse:collapse;width:100%;margin:16px 0;font-size:15px;display:block;overflow-x:auto}.prose th,.prose td{text-align:left;vertical-align:top;border-bottom:1px solid var(--line);padding:8px 10px}.prose th{background:var(--doi-purple-tint);font-weight:700}.prose blockquote{background:var(--surface);border-left:4px solid var(--doi-purple);border-radius:0 var(--radius) var(--radius) 0;margin:16px 0;padding:12px 16px}.prose blockquote p{margin:4px 0}.prose blockquote.diagram-spec{border:1px dashed var(--doi-purple);background:#faf9ff;border-left-width:4px;font-size:15px}.prose code{background:#eef0f4;border-radius:3px;padding:1px 5px;font-family:ui-monospace,Cascadia Code,Consolas,monospace;font-size:.9em}.prose pre{color:#e5e7eb;border-radius:var(--radius);background:#0f1117;padding:14px 16px;font-size:14px;line-height:1.5;overflow-x:auto}.prose pre code{color:inherit;background:0 0;padding:0}.prose hr{border:0;border-top:1px solid var(--line);margin:32px 0}.video,.diagram{margin:20px 0}.video-frame{aspect-ratio:16/9;border-radius:var(--radius-card);background:#000;position:relative;overflow:hidden}.video-frame iframe{border:0;width:100%;height:100%;position:absolute;inset:0}.video figcaption,.diagram figcaption{color:var(--muted);margin-top:8px;font-size:14px}.diagram img{background:var(--surface);border-radius:var(--radius-card);max-width:100%;height:auto;display:block}.quick-check ol{padding-left:22px}.quick-check li{margin-bottom:20px}.quick-check .prose{font-size:16px}.qc-form textarea{min-height:80px}.qc-form button{margin-top:8px}.my-answer{background:var(--bg);border-radius:var(--radius);white-space:pre-wrap;margin:8px 0;padding:10px 12px}.key{border-left:4px solid var(--ok);margin:8px 0;padding:6px 12px}.key .prose p{margin:4px 0}.submission h3{margin-top:0}.history{margin:0 0 16px;padding:0;list-style:none}.history li{border-bottom:1px solid var(--line);padding:10px 0}.history-text{white-space:pre-wrap;margin:6px 0}.review-note{background:var(--doi-purple-tint);border-radius:var(--radius);margin:8px 0 0;padding:8px 12px}.lesson-footer{border-top:1px solid var(--line);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;margin:32px 0 16px;padding-top:20px;display:flex}.lesson-footer form{margin:0}.pager{flex-wrap:wrap;gap:8px 20px;display:flex}.pager a{font-weight:600;text-decoration:none}main:has(.course-step){max-width:1180px}.course-step{grid-template-columns:280px minmax(0,1fr);align-items:start;gap:40px;display:grid}.step-body{min-width:0;max-width:760px}.outline{max-height:calc(100vh - 32px);font-size:14px;position:sticky;top:16px;overflow-y:auto}.outline-toggle{display:none}.outline summary{cursor:pointer;padding:6px 4px;line-height:1.35}.outline-unit-title{margin:18px 0 4px;padding:0 4px;font-weight:700}.outline-unit:first-child .outline-unit-title{margin-top:0}.outline-module>summary{font-weight:600}.outline-count{color:var(--muted);margin-left:6px;font-size:12px;font-weight:400}.outline .pill{margin-left:6px}.outline ol{margin:2px 0 8px;padding:0 0 0 12px;list-style:none}.outline li a{border-radius:var(--radius);color:var(--text);gap:8px;padding:5px 8px;line-height:1.35;text-decoration:none;display:flex}.outline li a:hover{background:var(--doi-purple-tint)}.outline .mark{width:14px;color:var(--muted);flex:none}.outline li.done .mark{color:var(--ok)}.outline li.here a{background:var(--doi-purple-tint);color:var(--doi-purple-dark);font-weight:600}.module-intro{border-bottom:1px solid var(--line);margin-bottom:28px;padding-bottom:8px}.crumbs.lesson-of{margin-bottom:4px}.lesson-title{margin-top:0}.step-back{flex-wrap:wrap;align-items:center;gap:8px 20px;font-size:15px;display:flex}.step-back a{color:var(--muted)}.step-back form{flex-wrap:wrap;align-items:center;gap:6px;display:flex}.step-next{flex-direction:column;align-items:flex-end;gap:6px;margin-left:auto;display:flex}.up-next{text-align:right;max-width:320px;font-size:14px}.module-outro{margin-top:28px}@media (max-width:900px){.course-step{grid-template-columns:1fr;gap:16px}.outline{max-height:none;position:static;overflow:visible}.outline-toggle{text-align:left;width:100%;display:block}.outline:not(.open) .outline-body{display:none}.outline.open .outline-body{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);margin-top:8px;padding:8px}}.comment-flag{opacity:.35;vertical-align:middle;margin-left:8px;font-size:13px;text-decoration:none}.comment-flag.has,h2:hover>.comment-flag,h3:hover>.comment-flag,h4:hover>.comment-flag{opacity:1}.feedback-launcher{z-index:40;border-radius:999px;align-items:center;gap:8px;display:inline-flex;position:fixed;bottom:16px;right:16px;box-shadow:0 6px 20px #0208172e}.feedback-count{min-width:20px;color:var(--doi-purple);text-align:center;background:#fff;border-radius:999px;padding:2px 6px;font-size:12px;line-height:16px}.feedback-drawer{z-index:50;background:var(--surface);border-left:1px solid var(--line);width:min(440px,100vw);padding:20px 20px 32px;display:none;position:fixed;top:0;bottom:0;right:0;overflow-y:auto;box-shadow:-10px 0 30px #0208171f}.feedback-drawer.open{display:block}.feedback-close{float:right;color:var(--muted);margin:-4px -4px 0 12px;font-size:20px;line-height:1;text-decoration:none}.review-panel select{max-width:100%}.review-panel h3{margin-top:28px}.comments{margin:0;padding:0;list-style:none}.comment{border-top:1px solid var(--line);padding:12px 0}.comment.resolved{opacity:.6}.comment-head{flex-wrap:wrap;justify-content:space-between;gap:4px 12px;font-size:14px;display:flex}.comment p{white-space:pre-wrap;margin:6px 0}.comment .reply{margin-left:16px;font-size:15px}.comment-actions{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.reply-form{flex:1;gap:8px;min-width:240px;display:flex}.reply-form input{flex:1}.reply-form button{padding:6px 12px}.file-groups details{margin:6px 0}.file-groups ul{margin:6px 0 10px}@media (max-width:560px){.prose{font-size:16px}.prose h2{font-size:22px}}.language-menu{align-items:center;gap:6px;margin:0 0 0 auto;display:flex}.language-menu select{font:inherit;color:inherit;background:var(--surface);border-radius:var(--radius);border:1px solid #c9c9cf;padding:4px 8px;font-size:14px}.visually-hidden{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}main:has(.staff){max-width:1240px}.staff{grid-template-columns:200px 1fr;align-items:start;gap:28px;display:grid}.staff-nav{flex-direction:column;gap:2px;font-size:15px;display:flex;position:sticky;top:16px}.staff-nav a{color:var(--text);border-radius:var(--radius);padding:7px 10px;text-decoration:none}.staff-nav a:hover{background:var(--doi-purple-tint);color:var(--doi-purple-dark)}.staff-nav hr{border:0;border-top:1px solid var(--line);width:100%;margin:10px 0}.staff-who{color:var(--muted);margin:0 0 8px 10px;font-size:13px}.staff-main{min-width:0}.staff-main h1{font-size:28px}.table{border-collapse:collapse;background:var(--surface);border-radius:var(--radius-card);width:100%;overflow:hidden}.table th,.table td{text-align:left;border-bottom:1px solid var(--line);vertical-align:top;padding:10px 12px}.table th{text-transform:uppercase;letter-spacing:.04em;color:var(--muted);background:#faf9fd;font-size:12px}.table tr:last-child td{border-bottom:0}.inline-form{flex-wrap:wrap;align-items:flex-end;gap:8px;display:flex}.inline-form label{margin:0;font-size:13px}.inline-form input,.inline-form select{width:auto}.copy-row{align-items:center;gap:8px;margin:10px 0;display:flex}.copy-box{background:var(--doi-purple-tint);border-radius:var(--radius);overflow-wrap:anywhere;-webkit-user-select:all;user-select:all;flex:1;margin:0;padding:10px 12px;font-family:ui-monospace,Consolas,monospace;font-size:13px}@media (max-width:900px){.staff{grid-template-columns:1fr}.staff-nav{flex-flow:wrap;position:static}}.outline li.exercise a{padding-left:20px;font-size:14px}.outline-status{white-space:nowrap;color:var(--muted);margin-left:auto;padding-left:6px;font-size:11px}.outline-status.none,.outline-status.revise{color:var(--warn)}.outline-status.accepted{color:var(--ok)}.pill.none{color:var(--warn);background:#fef3c7}.exercise-part{margin-top:28px}.exercise-part>h2{margin-bottom:8px}.exercise-downloads{margin-top:24px}.exercise-downloads h2{margin-top:0}.exercise-downloads ul{margin:0;padding-left:0;list-style:none}.exercise-downloads a{font-weight:600}.exercise-example{border:1px solid var(--line);border-radius:var(--radius);margin-top:24px;padding:12px 16px}.exercise-example>summary{cursor:pointer;color:var(--doi-purple);font-weight:600}.exercise-example[open]>summary{margin-bottom:8px}.exercise-nothing{margin-top:28px}.submit-line{border-left:4px solid var(--doi-purple);background:var(--doi-purple-tint);margin-bottom:16px;padding:12px 16px}.submit-line p:first-child{margin-top:0}.submit-line p:last-child{margin-bottom:0}.table-scroll{margin-bottom:24px;overflow-x:auto}.time-table td,.time-table th{white-space:nowrap}.time-table td:first-child{white-space:normal;min-width:220px}.time-table .time-group th{background:var(--doi-purple-tint);color:var(--doi-purple-dark);text-transform:none;letter-spacing:0;font-size:13px}.time-kind{margin-left:6px;font-size:11px}.slack{--slack-aubergine:#3f0e40;--slack-aubergine-dark:#350d36;--slack-active:#1164a3;--slack-green:#007a5a;--slack-text:#1d1c1d;--slack-muted:#616061;--slack-line:#ddd;border:1px solid var(--slack-line);height:min(78vh,820px);min-height:520px;color:var(--slack-text);background:#fff;border-radius:8px;grid-template-columns:240px 1fr;font-family:Lato,Helvetica Neue,Helvetica,Arial,sans-serif;font-size:15px;display:grid;overflow:hidden}.slack-side{background:var(--slack-aubergine);color:#ffffffb3;flex-direction:column;gap:1px;padding:0 8px 16px;display:flex;overflow-y:auto}.slack-side-title{color:#fff;border-bottom:1px solid #ffffff21;margin:0 -8px 8px;padding:14px 16px;font-size:17px;font-weight:900}.slack-group{color:#ffffffb3;margin:14px 0 4px 10px;font-size:14px}.slack-side a{color:#ffffffb3;border-radius:6px;align-items:center;gap:8px;padding:4px 10px;line-height:20px;text-decoration:none;display:flex}.slack-side a:hover{background:var(--slack-aubergine-dark);color:#fff}.slack-side a[aria-current=page]{background:var(--slack-active);color:#fff;font-weight:700}.slack-hash{text-align:center;opacity:.8;width:20px}.slack-dm-avatar{color:#fff;border-radius:4px;flex:none;justify-content:center;align-items:center;width:20px;height:20px;font-size:9px;font-weight:700;display:inline-flex}.slack-main{flex-direction:column;min-width:0;min-height:0;display:flex}.slack-head{border-bottom:1px solid var(--slack-line);padding:10px 20px}.slack-head h1{margin:0;font-size:18px;font-weight:900}.slack-head p{color:var(--slack-muted);margin:2px 0 0;font-size:13px}.slack-days{color:var(--slack-muted)}.slack-main>.banner{margin:8px 20px 0}.slack-messages{flex:1;margin:0;padding:12px 0;list-style:none;overflow-y:auto}.slack-empty{color:var(--slack-muted);padding:8px 20px}.slack-message{grid-template-columns:36px 1fr;gap:8px;padding:8px 20px;display:grid}.slack-message.follow-on{padding-top:2px;padding-bottom:2px}.slack-message:hover{background:#f8f8f8}.slack-message.in-thread{border-left:2px solid var(--slack-line);margin-left:44px}.slack-avatar{color:#fff;border-radius:6px;justify-content:center;align-items:center;width:36px;height:36px;font-size:14px;font-weight:700;display:flex}.slack-time-gutter{visibility:hidden;color:var(--slack-muted);text-align:right;white-space:nowrap;padding-top:3px;font-size:11px}.slack-message:hover .slack-time-gutter{visibility:visible}.slack-body{min-width:0;line-height:1.46}.slack-body>:first-child{margin-top:0}.slack-body p{margin:0 0 4px}.slack-meta{flex-wrap:wrap;align-items:baseline;gap:8px;margin:0;display:flex}.slack-meta strong{font-weight:900}.slack-time{color:var(--slack-muted);font-size:12px}.slack-app-tag{color:var(--slack-muted);background:#1d1c1d21;border-radius:2px;padding:0 3px;font-size:10px;font-weight:700}.slack-file{border:1px solid var(--slack-line);color:var(--slack-text);border-radius:8px;align-items:center;gap:8px;margin-top:4px;padding:8px 12px;font-weight:700;text-decoration:none;display:inline-flex}.slack-file:hover{background:#f8f8f8}.slack-file-icon{font-size:20px}.slack-composer{border:1px solid #bbbabb;border-radius:8px;margin:0 20px 16px;overflow:hidden}.slack-composer:focus-within{border-color:#868686;box-shadow:0 0 0 1px #868686}.slack-composer textarea{resize:vertical;width:100%;min-height:72px;font:inherit;border:0;outline:none;margin:0;padding:10px 12px;display:block}.slack-composer .actions{background:#f8f8f8;justify-content:flex-end;align-items:center;gap:8px;margin:0;padding:6px 8px;display:flex}.slack-composer select{width:auto;margin:0;padding:4px 8px;font-size:13px}.slack-composer button{background:var(--slack-green);color:#fff;border:0;border-radius:4px;margin:0;padding:5px 14px;font-weight:700}.slack-readonly{color:var(--slack-muted);background:#f8f8f8;border-radius:8px;margin:0 20px 16px;padding:10px 12px;font-size:14px}@media (max-width:720px){.slack{grid-template-columns:1fr;height:auto}.slack-side{max-height:220px}}.fde-app{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);margin:0 0 16px;padding:12px 14px}.fde-app p{margin:0 0 8px}.fde-app p:last-child{margin-bottom:0}.fde-app-title{font-weight:700}.fde-app-code{letter-spacing:.02em;overflow-wrap:anywhere;font-size:15px;font-weight:600}.fde-app .button{padding:6px 16px}
