@import "https://fonts.googleapis.com/css2?family=Titillium+Web:wght@400;600&display=swap";:root{color-scheme:dark;--bg:#030a16;--bg-2:#07162b;--surface:#0b1a30;--surface-2:#112641;--line:#9fb5d730;--text:#f1f4fa;--muted:#adbbd0;--royal:#1f467e;--royal-2:#83a7dd;--gold:#d6b16f;--gold-soft:#d6b16f1c;--shadow:0 18px 42px #00030e3b;--page-gradient:linear-gradient(160deg, #071b36 0%, #030a16 48%, #02050b 100%);--hero-gradient:linear-gradient(115deg, #0a2243 0%, #061124 58%, #02050b 100%);--header-bg:#020813f5}:root[data-theme=light]{color-scheme:light;--bg:#f9f8f3;--bg-2:#f1f1ed;--surface:#fffdf9;--surface-2:#f5efe1;--line:#1c3e7826;--text:#10274c;--muted:#4e6385;--royal:#1955ce;--royal-2:#2259bf;--gold:#997024;--gold-soft:#b17e221a;--shadow:0 24px 65px #10274c17;--page-gradient:linear-gradient(160deg, #eaf1fa 0%, #faf8f2 55%, #f2e5c9 100%);--hero-gradient:linear-gradient(115deg, #e6eef8 0%, #f8f6ee 58%, #ead7ac 100%);--header-bg:#fffcf4f5}*{box-sizing:border-box}html{scroll-behavior:smooth;font-synthesis:none}body{background:var(--page-gradient) fixed;color:var(--text);margin:0;font-family:Titillium Web,sans-serif;line-height:1.52}button,select,input,textarea,pre,code{font-family:Titillium Web,sans-serif}button,select,input,textarea{font-size:inherit}button{cursor:pointer}a{color:inherit;text-decoration:none}a:hover{color:var(--gold)}::selection{background:var(--gold);color:#070e1c}.shell{width:min(1240px,100% - 48px);margin-inline:auto}.site-header{z-index:30;backdrop-filter:blur(14px);background:var(--header-bg);border-bottom:1px solid var(--line);position:sticky;top:0}.nav{align-items:center;gap:clamp(10px,1.4vw,20px);min-height:66px;display:flex}.brand{letter-spacing:-.03em;white-space:nowrap;flex:none;align-items:center;gap:8px;font:600 1.24rem Titillium Web,sans-serif;display:inline-flex}.brand-mark{flex:none;place-items:center;width:34px;height:34px;display:grid}.brand-mark img{width:100%;height:100%;display:block}.nav-links{color:var(--muted);white-space:nowrap;align-items:center;gap:18px;margin-left:auto;font-size:.82rem;font-weight:600;display:flex}.nav-links a[aria-current=page]{color:var(--text)}.catalog-menus{align-items:center;gap:6px;display:flex}.catalog-menu{position:relative}.catalog-menu>summary{cursor:pointer;color:var(--text);border:1px solid var(--line);background:var(--surface);white-space:nowrap;border-radius:3px;padding:7px 10px;font-size:.81rem;font-weight:600;list-style:none}.catalog-menu>summary::-webkit-details-marker{display:none}.catalog-menu>summary:after{content:"⌄";color:var(--gold);margin-left:7px}.catalog-menu[open]>summary{border-color:var(--gold)}.catalog-menu-panel{z-index:50;border:1px solid var(--line);background:var(--surface);width:min(740px,100vw - 48px);max-height:min(75vh,650px);box-shadow:var(--shadow);border-radius:7px;position:absolute;top:calc(100% + 10px);left:0;overflow:hidden}.catalog-menu[data-mode=subject] .catalog-menu-panel{left:-120px}.catalog-menu-top{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:15px;padding:14px 18px;font-size:.82rem;display:flex}.catalog-menu-top a,.catalog-menu-directory{color:var(--gold);font-weight:600}.catalog-menu-top span{color:var(--muted)}.catalog-menu-columns{grid-template-columns:minmax(170px,230px) minmax(0,1fr);min-height:210px;max-height:min(67vh,570px);display:grid}.catalog-menu-choices,.catalog-menu-courses{padding:10px;overflow-y:auto}.catalog-menu-choices{border-right:1px solid var(--line);background:var(--bg-2)}.catalog-menu-choices button{width:100%;color:var(--text);text-align:left;background:0 0;border:0;border-radius:4px;padding:8px 10px;font-size:.83rem;line-height:1.25;display:block}.catalog-menu-choices button:hover,.catalog-menu-choices button[aria-pressed=true]{background:var(--gold-soft);color:var(--gold)}.catalog-menu-directory{border-bottom:1px solid var(--line);margin-bottom:7px;padding:7px 10px 12px;font-size:.82rem;display:block}.catalog-menu-course{border-radius:4px;align-items:baseline;gap:11px;padding:7px 10px;font-size:.85rem;line-height:1.3;display:flex}.catalog-menu-course:hover{background:var(--surface-2);color:var(--gold)}.catalog-menu-course span:first-child{color:var(--gold);flex:none;font-size:.74rem;font-weight:600}.utility-menu{position:relative}.utility-menu>summary{cursor:pointer;color:var(--text);white-space:nowrap;list-style:none}.utility-menu>summary::-webkit-details-marker{display:none}.utility-menu>summary:after{content:"⌄";color:var(--gold);margin-left:5px}.utility-menu-panel{background:var(--surface);border:1px solid var(--line);width:190px;box-shadow:var(--shadow);border-radius:3px;gap:2px;padding:8px;display:grid;position:absolute;top:calc(100% + 17px);right:-12px}.utility-menu-panel a{white-space:nowrap;border-radius:2px;padding:8px 10px;display:block}.utility-menu-panel a:hover,.mobile-nav-panel a:hover{color:var(--gold);background:var(--surface-2)}.nav-actions{flex:none;align-items:center;gap:7px;display:flex}.nav-actions .button{white-space:nowrap;padding:8px 12px;font-size:.8rem}.mobile-nav{display:none}.icon-button{border:1px solid var(--line);color:var(--text);background:var(--surface);border-radius:5px;place-items:center;width:40px;height:40px;display:grid}.site-language select{color:var(--text);background:var(--surface);border:1px solid var(--line);cursor:pointer;border-radius:3px;padding:7px 4px;font-size:.82rem;font-weight:600}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.button{background:var(--royal);color:#fff;box-shadow:none;border:1px solid #0000;border-radius:5px;justify-content:center;align-items:center;gap:9px;padding:12px 18px;font-size:.92rem;font-weight:600;transition:background .16s,border-color .16s,transform .16s;display:inline-flex}.button:hover{color:#fff;filter:brightness(1.1);transform:translateY(-2px)}.button.secondary{border-color:var(--line);box-shadow:none;color:var(--text);background:0 0}.button.secondary:hover{color:var(--gold)}.button.gold{background:var(--gold);color:#081526;box-shadow:none}.eyebrow{letter-spacing:.18em;text-transform:uppercase;color:var(--gold);font-size:.74rem;font-weight:600}h1,h2,h3,h4{letter-spacing:-.025em;font-family:Titillium Web,sans-serif;font-weight:600;line-height:1.16}strong,b{font-weight:600}h1{margin:13px 0 23px;font-size:clamp(2.45rem,4.4vw,4.8rem)}h2{margin:0 0 14px;font-size:clamp(1.95rem,3.2vw,3.1rem)}p{margin-top:0}.muted{color:var(--muted)}.gold-text{color:var(--gold)}.section{padding-block:90px}.section-head{max-width:690px;margin-bottom:34px}.section-head p{color:var(--muted);font-size:1.05rem}.card{background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:7px}.field{gap:7px;display:grid}.field label{color:var(--muted);text-transform:uppercase;letter-spacing:.08em;font-size:.78rem;font-weight:600}.field select,.field input{border:1px solid var(--line);background:var(--bg-2);width:100%;color:var(--text);border-radius:5px;outline:0;padding:12px 14px}.field select:focus,.field input:focus{border-color:var(--royal-2);box-shadow:0 0 0 3px color-mix(in srgb, var(--royal) 18%, transparent)}.footer{border-top:1px solid var(--line);color:var(--muted);padding:44px 0;font-size:.86rem}.footer-inner{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:18px;display:flex}.footer-links{flex-wrap:wrap;gap:20px;display:flex}#analytics-consent{z-index:100;background:var(--surface-2);border:1px solid var(--gold);width:min(460px,100vw - 32px);box-shadow:var(--shadow);padding:17px;position:fixed;bottom:16px;left:16px}#analytics-consent p{margin:0 0 12px;font-size:.9rem}#analytics-consent div{flex-wrap:wrap;align-items:center;gap:9px;display:flex}#analytics-consent button{border:1px solid var(--gold);color:var(--text);background:0 0;padding:5px 10px}#analytics-consent button+button{background:var(--royal)}#analytics-settings{color:var(--muted);cursor:pointer;background:0 0;border:0;font-size:.86rem;text-decoration:underline}.skip{z-index:100;background:var(--gold);color:#070e1c;padding:8px 12px;position:absolute;top:10px;left:-9999px}.skip:focus{left:10px}#language-offer{border:1px solid var(--gold);background:var(--surface);width:min(480px,100vw - 32px);color:var(--text);border-radius:6px;padding:30px;box-shadow:0 30px 90px #0000007a}#language-offer::backdrop{backdrop-filter:blur(4px);background:#030a18ad}#language-offer h2{margin:10px 0 14px;font-size:2rem}#language-offer p{color:var(--muted)}.language-offer-actions{flex-wrap:wrap;gap:10px;margin-top:22px;display:flex}:focus-visible{outline:3px solid var(--gold);outline-offset:2px}@media (width<=980px){.nav-links,.catalog-menus{display:none}.nav-actions{margin-left:auto}.mobile-nav{display:block;position:relative}.mobile-nav>summary{cursor:pointer;border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:3px;padding:7px 10px;font-size:.82rem;font-weight:600;list-style:none}.mobile-nav>summary::-webkit-details-marker{display:none}.mobile-nav-panel{border:1px solid var(--line);background:var(--surface);width:min(270px,100vw - 32px);box-shadow:var(--shadow);border-radius:3px;padding:8px;display:grid;position:absolute;top:calc(100% + 13px);right:0}.mobile-nav-panel a{border-radius:2px;padding:9px 11px;font-size:.85rem;display:block}}@media (width<=720px){.shell{width:min(100% - 32px,1240px)}.nav{gap:9px;min-height:62px}.brand{font-size:1.1rem}.brand-mark{width:30px;height:30px}.nav-actions .button{display:none}.section{padding-block:62px}}@media (width<=390px){.nav{gap:6px}.brand{font-size:.98rem}.site-language select{padding:7px 2px}.icon-button{width:32px;height:34px}.mobile-nav>summary{padding:7px}}.prose{color:var(--text);overflow-wrap:anywhere;line-height:1.75}.prose h2{margin-top:2.2rem;font-size:1.6rem}.prose h3{margin-top:1.8rem;font-size:1.25rem}.prose a{color:var(--gold);text-underline-offset:3px;text-decoration:underline}.prose pre{background:var(--bg-2);color:var(--text);border:1px solid var(--line);border-radius:4px;padding:17px;overflow-x:auto}.prose code{background:var(--surface-2);border-radius:4px;padding:2px 4px}.prose pre code{background:0 0;padding:0}.prose blockquote{border-left:3px solid var(--gold);color:var(--muted);margin-inline:0;padding-left:18px}.prose table{border-collapse:collapse;max-width:100%;display:block;overflow-x:auto}.prose th,.prose td{border:1px solid var(--line);text-align:left;padding:8px 11px}.prose img{max-width:100%;height:auto}.prose .diagram{background:var(--bg-2);border-radius:4px;margin:1.3rem 0;padding:12px}.diagram-viewport{max-height:min(75vh,760px);overflow:auto}.diagram-viewport img{width:100%;max-width:none;height:auto;margin:0 auto;display:block}.diagram-viewport img.diagram-tall{width:min(100%,520px)}.diagram-viewport img.diagram-wide{width:1800px}.prose .diagram>a{margin:9px 0;font-size:.82rem;display:inline-block}.prose .diagram summary{cursor:pointer;color:var(--gold);font-size:.82rem}.prose .diagram pre{margin:12px 0 0}.directory-heading{background:var(--hero-gradient);border-bottom:1px solid var(--line);padding:64px 0 45px}.directory-heading h1{margin-bottom:14px;font-size:clamp(2.2rem,4.2vw,3.8rem)}.directory-heading p{max-width:760px;color:var(--muted);font-size:1.05rem}.directory-switch{flex-wrap:wrap;gap:12px;margin-top:24px;display:flex}.breadcrumbs{color:var(--muted);flex-wrap:wrap;align-items:center;gap:11px;margin-bottom:28px;font-size:.84rem;display:flex}.breadcrumbs a{color:var(--gold)}.directory-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;display:grid}.directory-card{min-height:210px;box-shadow:none;flex-direction:column;padding:26px;transition:border-color .18s,transform .18s;display:flex}.directory-card:hover{border-color:var(--gold);color:var(--text);transform:translateY(-3px)}.directory-card h2{margin:13px 0 8px;font-size:1.45rem}.directory-card p{color:var(--muted);margin-bottom:20px;font-size:.9rem}.directory-arrow{color:var(--gold);margin-top:auto;font-size:.86rem;font-weight:600}.directory-foot{border-top:1px solid var(--line);flex-wrap:wrap;justify-content:space-between;gap:14px;padding:24px 0 50px;display:flex}.directory-foot a{color:var(--gold);font-size:.9rem;font-weight:600}@media (width<=950px){.directory-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (width<=600px){.directory-heading{padding:44px 0 35px}.directory-grid{grid-template-columns:1fr}.directory-card{min-height:175px}}.course-heading{background:var(--hero-gradient);border-bottom:1px solid var(--line);padding:46px 0 30px}.published-lesson-directory{border:1px solid var(--line);background:var(--surface);margin-top:32px;padding:24px}.published-lesson-directory h2{font-size:1.5rem}.published-lesson-directory p{color:var(--muted)}.published-lesson-directory details{border-top:1px solid var(--line);padding:12px 0}.published-lesson-directory summary{cursor:pointer;color:var(--gold)}.published-lesson-links{grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:7px 20px;padding-top:15px;display:grid}.published-lesson-links a{color:var(--text);font-size:.9rem}.published-lesson-links a:hover{color:var(--gold);text-decoration:underline}.course-heading h1{margin-bottom:12px;font-size:clamp(2.2rem,4.2vw,3.8rem)}.course-heading p{max-width:780px;color:var(--muted)}.course-heading-actions{flex-wrap:wrap;align-items:end;gap:12px;margin-top:22px;display:flex}.course-language{min-width:190px}.course-language select{min-height:47px}.course-heading .status{min-height:24px;margin:15px 0 0;font-size:.83rem}.course-facts{flex-wrap:wrap;gap:9px;margin-top:12px;display:flex}.course-facts span{border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:3px;padding:7px 12px;font-size:.81rem}.course-facts span:last-child{border-color:color-mix(in srgb, var(--gold) 45%, var(--line));color:var(--gold)}.course-workspace{grid-template-columns:minmax(250px,300px) minmax(0,1fr);align-items:start;gap:23px;padding:32px 0 66px;display:grid}.course-sidebar{max-height:calc(100vh - 112px);box-shadow:none;position:sticky;top:94px;overflow:auto}.course-sidebar-head{border-bottom:1px solid var(--line);padding:24px 20px 13px}.course-sidebar h2{margin:8px 0 6px;font-size:1.3rem}.course-sidebar p{color:var(--muted);margin:0;font-size:.82rem}.course-sidebar-head a{color:var(--gold);margin-top:14px;font-size:.82rem;display:inline-block}.course-sidebar nav{padding:8px 0 18px;display:grid}.course-index-switch{border:1px solid var(--line);background:var(--bg-2);grid-template-columns:1fr 1fr;gap:5px;margin:6px 12px 15px;padding:4px;display:grid}.course-index-switch button{color:var(--muted);background:0 0;border:0;border-radius:2px;padding:9px 4px;font-size:.78rem;font-weight:600}.course-index-switch button[aria-pressed=true]{background:var(--surface-2);color:var(--gold)}.course-week-picker{gap:5px;margin:0 12px 12px;display:flex}.course-week-picker button,.course-week-picker select{border:1px solid var(--line);background:var(--surface);min-height:38px;color:var(--text);border-radius:3px}.course-week-picker button{flex:none;width:36px}.course-week-picker button:disabled{opacity:.35;cursor:default}.course-week-picker select{width:100%;min-width:0;padding:5px;font-size:.77rem}.course-sidebar .course-index-heading{color:var(--gold);letter-spacing:.06em;text-transform:uppercase;margin:13px 18px 5px;font-size:.82rem;font-weight:600}.course-index-note{color:var(--muted);margin:5px 18px 12px;font-size:.81rem}.course-module{border-bottom:1px solid var(--line)}.course-module summary{cursor:pointer;justify-content:space-between;align-items:center;gap:12px;padding:12px 18px;font-size:.84rem;font-weight:600;list-style:none;display:flex}.course-module summary::-webkit-details-marker{display:none}.course-module summary:before{content:"▸";color:var(--gold);transition:transform .15s}.course-module[open] summary:before{transform:rotate(90deg)}.course-module summary span:first-child{flex:1}.course-module summary span:last-child{color:var(--muted);white-space:nowrap;font-size:.73rem;font-weight:400}.course-lesson{border-left:3px solid #0000;grid-template-columns:27px minmax(0,1fr);column-gap:9px;padding:10px 17px;font-size:.84rem;line-height:1.35;display:grid}.course-lesson:hover,.course-lesson.active{color:var(--text);background:var(--surface-2)}.course-lesson.active{border-left-color:var(--gold)}.course-lesson:has(.lesson-state){text-decoration:none}.course-lesson .lesson-number{color:var(--gold);font-weight:600}.course-lesson .lesson-state{color:var(--muted);grid-column:2;margin-top:2px;font-size:.72rem}.course-lesson.active .lesson-state{color:var(--gold)}.course-lesson.is-planned{opacity:.72}.course-reader{min-height:500px;padding:clamp(25px,4vw,50px)}.course-reader h2{margin:8px 0 11px;font-size:clamp(1.8rem,3vw,2.75rem)}#course-reader-title{scroll-margin-top:104px}.course-lesson-top{border-bottom:1px solid var(--line);flex-wrap:wrap;justify-content:space-between;gap:10px;margin-bottom:23px;padding-bottom:16px;font-size:.83rem;display:flex}.course-lesson-top span{color:var(--muted)}.course-lesson-top a{color:var(--gold)}.course-lesson-top[hidden],.course-overview[hidden]{display:none}.course-overview{margin-top:27px}.course-cadence{border:1px solid color-mix(in srgb, var(--gold) 40%, var(--line));background:linear-gradient(135deg, var(--bg-2), var(--surface));border-radius:5px;margin-bottom:30px;padding:22px}.course-cadence h3{margin:7px 0 8px}.course-cadence p{color:var(--muted);margin:8px 0}.course-weekdays{flex-wrap:wrap;gap:8px;margin:15px 0;display:flex}.course-weekdays span{text-align:center;border:1px solid var(--line);min-width:49px;color:var(--gold);background:var(--surface);border-radius:3px;padding:7px 10px;font-size:.8rem;font-weight:600}.course-cadence .course-availability{margin:15px 0 0;font-size:.88rem}.course-start-action{margin-top:17px}.course-overview h3{margin:0 0 17px;font-size:1.36rem}.course-module-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;display:grid}.course-module-card{border:1px solid var(--line);background:var(--bg-2);border-radius:4px;padding:20px}.course-module-card h4{margin:0 0 5px;font-size:1.05rem}.course-module-card p{color:var(--muted);margin-bottom:15px;font-size:.78rem}.course-module-list{gap:6px;display:grid}.course-overview-lesson{border:1px solid var(--line);background:var(--surface);border-radius:3px;grid-template-columns:26px minmax(0,1fr);column-gap:10px;padding:10px 11px;font-size:.83rem;line-height:1.35;display:grid}.course-overview-lesson:hover{border-color:var(--gold);color:var(--text)}.course-overview-lesson.is-planned{opacity:.72}.course-chapter-browse{border-top:1px solid var(--line);margin-top:24px}.course-chapter-browse summary{color:var(--gold);cursor:pointer;padding:15px 0;font-weight:600}.course-chapter-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;display:grid}.course-overview-lesson .lesson-number{color:var(--gold);font-weight:600}.course-overview-lesson .lesson-state{color:var(--muted);grid-column:2;margin-top:3px;font-size:.72rem}.course-reader .reader-kicker{color:var(--gold);letter-spacing:.13em;font-size:.75rem;font-weight:600}.course-reader .source-bar{border-bottom:1px solid var(--line);margin:12px 0 25px;padding:10px 0 18px}.course-reader .source-bar:empty{display:none}.course-reader .source-bar a{color:var(--gold);font-size:.87rem;font-weight:600}.course-reader .answer-section,.course-reader .progress-tools{background:var(--bg-2);border:1px solid var(--line);border-radius:4px;margin-top:30px;padding:18px}.course-reader .answer-section summary{color:var(--gold);cursor:pointer;font-weight:600}.course-reader .answer-section .prose{margin-top:18px}.course-reader .progress-tools h3{margin:7px 0;font-size:1.25rem}.course-reader .progress-tools p{color:var(--muted);font-size:.87rem}.course-reader .progress-tools .button{margin:8px 0}.course-reader .exercise-form{border-top:1px solid var(--line);gap:8px;margin-top:15px;padding-top:15px;display:grid}.course-reader .exercise-form label{font-size:.85rem;font-weight:600}.course-reader .exercise-form textarea{resize:vertical;background:var(--bg);color:var(--text);border:1px solid var(--line);font:inherit;border-radius:4px;padding:11px}.course-reader .exercise-form button{justify-self:start}.course-reader .lesson-nav{border-top:1px solid var(--line);flex-wrap:wrap;justify-content:space-between;gap:10px;margin-top:34px;padding-top:24px;display:flex}.course-reader .course-nav-top{border-top:0;border-bottom:1px solid var(--line);margin:24px 0;padding:0 0 21px}.course-reader .course-nav-top[hidden]{display:none}@media (width<=850px){.course-workspace{grid-template-columns:1fr}.course-sidebar{max-height:350px;position:static}.course-heading{padding-top:35px}}@media (width<=620px){.course-module-grid,.course-chapter-list{grid-template-columns:1fr}.course-reader{padding:22px}.course-lesson-top{flex-direction:column}.course-reader .lesson-nav{justify-content:stretch}.course-reader .lesson-nav a{flex:1}}