@font-face{font-family:Inter;font-style:normal;font-weight:400 900;font-display:swap;src:url(/fonts/inter-latin.woff2)format("woff2")}@font-face{font-family:Elms Sans;font-style:normal;font-weight:400 800;font-display:swap;src:url(/fonts/elms-sans-latin.woff2)format("woff2")}@font-face{font-family:Material Symbols Rounded;font-style:normal;font-weight:400 700;font-display:block;src:url(/fonts/material-symbols-rounded-subset.woff2)format("woff2")}:root{color:#1f2937;font-synthesis:none;text-rendering:optimizelegibility;background:#f5f7fb;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif}*{box-sizing:border-box}body{background:#f5f7fb;margin:0;overflow-x:hidden}button,input,select{font:inherit}button{cursor:pointer}a{color:inherit}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.material-symbols-rounded{letter-spacing:normal;white-space:nowrap;font-feature-settings:"liga";-webkit-font-feature-settings:"liga";-webkit-font-smoothing:antialiased;vertical-align:-.18em;direction:ltr;flex:none;justify-content:center;align-items:center;font-family:Material Symbols Rounded;font-size:20px;font-style:normal;font-weight:400;line-height:1;display:inline-flex;text-transform:none!important}.site-home{background:radial-gradient(circle at 12% 18%,#1677ff29,#0000 28%),radial-gradient(circle at 85% 10%,#eb2f9629,#0000 30%),linear-gradient(135deg,#f8fbff 0%,#f7f4ff 48%,#fff8f1 100%);min-height:100vh;overflow-x:hidden}.site-home section,.site-footer{scroll-margin-top:86px}.site-nav{z-index:5;-webkit-backdrop-filter:blur(22px)saturate(1.35);background:#ffffff8f;border-bottom:1px solid #ffffff6b;justify-content:space-between;align-items:center;gap:20px;padding:18px clamp(18px,4vw,54px);display:flex;position:sticky;top:0;box-shadow:0 12px 34px #1f293714}.site-brand{align-items:center;gap:10px;text-decoration:none;display:inline-flex}.site-brand span{color:#fff;background:#111827;border-radius:8px;place-items:center;width:38px;height:38px;font-weight:800;display:grid}.site-links{gap:10px;display:flex}.site-links a,.nav-menu-trigger{color:#344054;background:#fff;border:1px solid #d0d5dd;border-radius:8px;align-items:center;gap:7px;padding:9px 12px;font-weight:700;text-decoration:none;display:inline-flex}.nav-menu-content{z-index:50;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#fffffffa;border:1px solid #e5e7eb;border-radius:8px;gap:4px;min-width:260px;padding:8px;animation:.18s both soft-pop;display:grid;box-shadow:0 18px 46px #1f293724}.nav-menu-item{color:#344054;border-radius:8px;outline:none;align-items:center;gap:10px;padding:11px 12px;font-size:14px;font-weight:800;text-decoration:none;display:flex}.nav-menu-item[data-highlighted]{color:#0958d9;background:#eef5ff}.theme-toggle,.mobile-theme-toggle{color:#344054;background:#fff;border:1px solid #d0d5dd;border-radius:8px;justify-content:center;align-items:center;gap:7px;padding:9px 12px;font-weight:800;display:inline-flex}.theme-toggle:hover,.mobile-theme-toggle:hover,.nav-menu-trigger:hover{color:#0958d9;border-color:#1677ff}.sidebar-theme{width:100%;margin-bottom:12px}.site-links a:hover{color:#0958d9;border-color:#1677ff}.home-hero{color:#111827;background:#fff;border:1px solid #e5e7eb;border-radius:8px;grid-template-columns:minmax(260px,.9fr) minmax(340px,1.1fr);align-items:stretch;gap:clamp(18px,4vw,48px);max-width:1180px;min-height:min(640px,78vh);margin:34px auto 0;padding:clamp(18px,4vw,42px);font-family:inherit;transition:border-color .24s,box-shadow .24s,transform .24s;animation:.68s cubic-bezier(.22,1,.36,1) both hero-card-in;display:grid;position:relative;overflow:hidden;box-shadow:0 18px 46px #1f293714}.home-hero:hover{border-color:#b9d7ff;transform:translateY(-2px);box-shadow:0 24px 58px #1677ff1f}.home-hero>div{z-index:2;position:relative}.hero-copy{align-self:center;max-width:820px;padding:clamp(10px,2vw,24px) 0}.home-hero h1{letter-spacing:0;text-wrap:balance;text-shadow:none;margin:8px 0 14px;font-family:inherit;font-size:clamp(44px,8vw,92px);line-height:.96;animation:.78s both hero-rise}.hero-media{background:#fff;justify-content:center;align-items:center;min-height:420px;padding:clamp(18px,3vw,34px);display:flex;overflow:visible}.ascii-hero{box-shadow:none;border:0}.ascii-card{aspect-ratio:16/9;color:#1677ff;width:min(100%,560px);box-shadow:none;transform-origin:50% 78%;isolation:isolate;background:#fff;animation:4.5s ease-in-out infinite ascii-float;position:relative;container-type:inline-size}.ascii-card:before{content:"";z-index:-1;filter:blur(18px);background:radial-gradient(circle,#1677ff29,#0000 68%);border-radius:50%;animation:3.2s ease-in-out infinite ascii-glow;position:absolute;top:7%;bottom:7%;left:4%;right:4%}.ascii-morph-output{place-items:center;width:100%;height:100%;display:grid;position:relative;overflow:hidden}.ascii-scanline{z-index:2;mix-blend-mode:multiply;pointer-events:none;background:linear-gradient(#0000,#1677ff1a,#0000);height:10%;animation:3.8s linear infinite ascii-scan;position:absolute;top:5%;bottom:auto;left:3%;right:3%}.ascii-status{z-index:3;color:#0958d9;letter-spacing:.16em;font:800 clamp(8px,1.4cqw,11px)/1 Inter,sans-serif;animation:1.25s steps(2,end) infinite ascii-status-pulse;position:absolute;bottom:7%;right:5%}.ascii-morph-output pre{color:#1677ff;letter-spacing:0;white-space:pre;text-rendering:geometricprecision;margin:0;font-family:Consolas,Courier New,monospace;font-size:2.28cqw;font-weight:700;line-height:.88}.home-hero p{color:#475467;max-width:720px;margin:0;font-size:clamp(18px,2vw,23px);line-height:1.5;animation:.88s 90ms both hero-rise}.home-stats{z-index:3;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;max-width:1180px;margin:18px auto 0;padding:0 clamp(18px,4vw,34px);display:grid;position:relative}.home-stats div,.course-showcase-grid a,.site-footer,.optimizer-content article{background:#fffffff5;border:1px solid #e5e7eb;border-radius:8px;box-shadow:0 18px 46px #1f293714}.home-stats div{grid-template-columns:44px 1fr;align-items:center;gap:2px 12px;padding:18px;display:grid}.home-stats .material-symbols-rounded{color:#0958d9;background:#eef5ff;border-radius:8px;grid-row:span 2;width:44px;height:44px}.home-stats strong{color:#111827;font-size:30px;line-height:1}.home-stats small{color:#475467;font-weight:700}.site-footer h2,.optimizer-hero h1{color:#111827;letter-spacing:0;margin:8px 0 0;font-size:clamp(34px,5vw,64px);line-height:1}.hero-actions{flex-wrap:wrap;gap:12px;margin-top:26px;animation:.9s .17s both hero-rise;display:flex}.hero-actions a{color:#fff;background:#1677ff;border:1px solid #1677ff;border-radius:8px;justify-content:center;align-items:center;gap:8px;padding:12px 16px;font-weight:800;text-decoration:none;display:inline-flex}.hero-actions a.secondary{color:#0958d9;background:#fff;border-color:#b9d7ff}.hero-actions a:hover{transform:translateY(-2px);box-shadow:0 16px 36px #1677ff3d}.hero-glow{z-index:1;filter:blur(8px);opacity:.68;pointer-events:none;mix-blend-mode:screen;border-radius:50%;width:340px;height:340px;position:absolute}.hero-glow.one{background:radial-gradient(circle,#1677ff9e,#0000 68%);animation:8s ease-in-out infinite float-one;top:12%;right:8%}.hero-glow.two{background:radial-gradient(circle,#fa8c168f,#0000 70%);animation:10s ease-in-out infinite float-two;bottom:-8%;right:26%}.hero-grid{z-index:1;background-image:linear-gradient(#ffffff14 1px,#0000 1px),linear-gradient(90deg,#ffffff14 1px,#0000 1px);background-size:58px 58px;animation:18s linear infinite grid-drift;position:absolute;top:0;bottom:0;left:0;right:0;-webkit-mask-image:linear-gradient(#0000,#000 32% 82%,#0000);mask-image:linear-gradient(#0000,#000 32% 82%,#0000)}.projects-section{max-width:1180px;margin:0 auto;padding:clamp(28px,5vw,64px) clamp(18px,4vw,34px)}.projects-layout{grid-template-columns:minmax(0,1fr) minmax(340px,.86fr);align-items:start;gap:clamp(18px,3vw,34px);display:grid}.projects-main{min-width:0}.course-showcase{max-width:1180px;margin:0 auto;padding:clamp(28px,5vw,66px) clamp(18px,4vw,34px) clamp(18px,3vw,34px)}.course-path-panel{background:#f7fbff;border:1px solid #d9e8ff;border-radius:8px;padding:clamp(18px,3vw,28px);box-shadow:0 20px 52px #1f293714}.course-path-copy{max-width:520px;margin-bottom:18px}.course-path-copy h2{color:#111827;letter-spacing:0;margin:0;font-size:clamp(28px,3.1vw,38px);line-height:1.08}.course-path-copy p{color:#475569;max-width:520px;margin:10px 0 0;font-size:15px;line-height:1.55}.course-path-list{gap:10px;display:grid}.course-path-row{color:#111827;background:#fff;border:1px solid #d6e4ff;border-radius:8px;grid-template-columns:7px minmax(0,1fr) auto;align-items:center;gap:14px;min-height:72px;padding:14px 16px;text-decoration:none;transition:transform .2s,border-color .2s,box-shadow .2s,background .2s;display:grid}.course-path-row:first-child{background:#eaf4ff}.course-path-row:hover{border-color:#9cc7ff;transform:translateY(-2px);box-shadow:0 18px 42px #1f7aff1f}.course-row-mark{background:var(--course-accent);border-radius:999px;width:7px;height:44px}.course-path-row strong{letter-spacing:0;font-size:clamp(18px,1.75vw,23px);line-height:1.15}.course-path-row em{color:#1f7aff;white-space:nowrap;background:#fff;border:1px solid #d5e3ff;border-radius:999px;justify-content:center;align-items:center;gap:8px;min-width:112px;padding:8px 12px;font-size:14px;font-style:normal;font-weight:800;display:inline-flex}.course-path-row em span{background:#1f7aff;border-radius:50%;width:9px;height:9px}.course-showcase-grid{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;display:grid}.course-showcase-grid a{color:#344054;gap:12px;padding:24px;text-decoration:none;transition:transform .2s,box-shadow .2s,border-color .2s;display:grid}.course-showcase-grid a:hover{border-color:#b9d7ff;transform:translateY(-2px)}.course-showcase-grid a:hover .material-symbols-rounded{transform:translateY(-2px)scale(1.06)}.course-showcase-grid .material-symbols-rounded{color:#0958d9;background:#eef5ff;border-radius:8px;width:48px;height:48px;font-size:28px}.course-showcase-grid h3{color:#111827;margin:0;font-size:28px}.course-showcase-grid p{color:#475467;margin:0;line-height:1.6}.course-showcase-grid strong{color:#0958d9}.site-footer{gap:16px;max-width:1180px;margin:16px auto 0;padding:24px;display:grid}.footer-links{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;display:grid}.footer-links a{color:#344054;background:#fbfcff;border:1px solid #e5e7eb;border-radius:8px;align-items:center;gap:10px;padding:12px 14px;font-weight:800;text-decoration:none;display:flex}.footer-links a:hover{color:#0958d9;border-color:#1677ff}.section-head{max-width:680px;margin-bottom:22px}.section-head h2{letter-spacing:0;margin:8px 0;font-size:clamp(32px,4vw,48px)}.section-head p{color:#475467;margin:0;line-height:1.65}.project-grid{grid-template-columns:repeat(2,minmax(220px,1fr));gap:18px;display:grid}.project-card{background:linear-gradient(#fff,#fff) padding-box padding-box,linear-gradient(135deg,#1677ff5c,#eb2f9633,#fa8c163d) border-box;border:1px solid #0000;border-radius:8px;flex-direction:column;justify-content:space-between;min-height:245px;padding:22px;text-decoration:none;transition:border-color .2s,transform .2s,box-shadow .2s;display:flex}.project-card:hover{transform:translateY(-2px);box-shadow:0 14px 34px #1f293714}.project-card:hover .project-icon{transform:rotate(-4deg)scale(1.08)}.project-icon{color:#0958d9;background:#eef5ff;border-radius:8px;width:42px;height:42px;margin-bottom:12px;font-size:24px;transition:transform .22s}.project-card span{color:#1677ff;text-transform:uppercase;font-size:12px;font-weight:800}.project-card h3{color:#111827;letter-spacing:0;margin:18px 0 8px;font-size:24px}.project-card p{color:#475467;margin:0;line-height:1.6}.project-card strong{color:#0958d9;align-items:center;gap:6px;margin-top:24px;display:inline-flex}.project-preview{z-index:50;color:#344054;background:#fff;border:1px solid #e5e7eb;border-radius:8px;grid-template-columns:44px 1fr;gap:12px;width:min(330px,100vw - 24px);padding:14px;animation:.18s both soft-pop;display:grid;box-shadow:0 18px 46px #1f293724}.project-preview>.material-symbols-rounded{color:#0958d9;background:#eef5ff;border-radius:8px;width:44px;height:44px}.project-preview strong,.project-preview p,.project-preview small{display:block}.project-preview p{color:#475467;margin:5px 0;line-height:1.45}.project-preview small{color:#667085;font-weight:800}.optimizer-hero{color:#fff;background:radial-gradient(circle at 18% 18%,#52c41a42,#0000 34%),radial-gradient(circle at 80% 12%,#1677ff61,#0000 34%),linear-gradient(120deg,#08111f,#113a5c 52%,#12443c);align-items:flex-end;min-height:480px;padding:clamp(32px,6vw,72px);display:flex}.optimizer-hero>div{max-width:900px}.optimizer-hero h1{color:#fff}.optimizer-hero p{color:#e6f4ff;max-width:760px;margin:14px 0 0;font-size:clamp(18px,2vw,24px);line-height:1.55}.optimizer-content{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;max-width:1180px;margin:0 auto;padding:clamp(28px,5vw,64px) clamp(18px,4vw,34px);display:grid}.optimizer-content article{padding:24px}.optimizer-content article:first-child,.optimizer-content article:last-child{grid-column:1/-1}.optimizer-content .material-symbols-rounded{color:#0958d9;background:#eef5ff;border-radius:8px;width:48px;height:48px;font-size:28px}.optimizer-content h2{color:#111827;letter-spacing:0;margin:18px 0 10px;font-size:clamp(24px,3vw,36px)}.optimizer-content p{color:#475467;line-height:1.7}.optimizer-content pre{color:#e6f4ff;background:#101828;border-radius:8px;padding:16px;line-height:1.5;overflow-x:auto}.optimizer-use-grid{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:10px;margin-top:18px;display:grid}.optimizer-use-grid span{color:#344054;background:#fbfcff;border:1px solid #e5e7eb;border-radius:8px;padding:12px;font-weight:700}@keyframes hero-rise{0%{opacity:0;transform:translateY(18px)}to{opacity:1;transform:translateY(0)}}@keyframes hero-tint{0%{background-position:50%}to{background-position:50% 42%}}@keyframes float-one{0%,to{transform:translate(0,0)scale(1)}50%{transform:translate(-34px,24px)scale(1.12)}}@keyframes float-two{0%,to{transform:translate(0,0)scale(1)}50%{transform:translate(32px,-18px)scale(1.08)}}@keyframes grid-drift{0%{background-position:0 0}to{background-position:58px 58px}}@keyframes page-in{0%{opacity:0}to{opacity:1}}@keyframes hero-card-in{0%{opacity:0;transform:translateY(18px)scale(.985)}to{opacity:1;transform:translateY(0)scale(1)}}@keyframes hand-float{0%,to{transform:translateY(0)rotate(0)}50%{transform:translateY(-8px)rotate(-1.5deg)}}@keyframes ascii-float{0%,to{transform:translateY(0)rotate(0)}50%{transform:translateY(-8px)rotate(-1deg)}}@keyframes ascii-glow{0%,to{opacity:.58;transform:scale(.94)}50%{opacity:1;transform:scale(1.06)}}@keyframes ascii-scan{0%{opacity:0;transform:translateY(0)}12%{opacity:1}88%{opacity:1}to{opacity:0;transform:translateY(790%)}}@keyframes ascii-status-pulse{0%,64%{opacity:1}65%,to{opacity:.35}}@keyframes card-in{0%{opacity:0;transform:translateY(18px)}to{opacity:1;transform:translateY(0)}}@keyframes soft-pop{0%{opacity:0;transform:translate(-8px)}to{opacity:1;transform:translate(0)}}@keyframes drawer-in{0%{opacity:0;transform:translate(-104%)}to{opacity:1;transform:translate(0)}}@keyframes accordion-down{0%{height:0}to{height:var(--bits-accordion-content-height)}}@keyframes accordion-up{0%{height:var(--bits-accordion-content-height)}to{height:0}}@keyframes visual-in{0%{opacity:0;transform:translateY(12px)scale(.99)}to{opacity:1;transform:translateY(0)scale(1)}}@keyframes metric-pulse{0%,to{box-shadow:0 0 #1677ff00}50%{box-shadow:0 0 0 4px #1677ff14}}@keyframes chart-reveal{0%{opacity:0;transform-origin:bottom;transform:scaleY(.94)}to{opacity:1;transform:scaleY(1)}}@keyframes line-draw{to{stroke-dashoffset:0}}@keyframes bar-grow{0%{width:0}}@keyframes tree-node-in{0%{opacity:0;transform:translateY(-8px)scale(.94)}to{opacity:1;transform:translateY(0)scale(1)}}@keyframes quiz-in{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@keyframes answer-correct{0%{transform:scale(1)}50%{transform:scale(1.012)}to{transform:scale(1)}}@keyframes answer-wrong{0%,to{transform:translate(0)}30%{transform:translate(-4px)}60%{transform:translate(4px)}}@keyframes feedback-in{0%{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}@keyframes feedback-icon-good{0%{transform:scale(.35)rotate(-24deg)}58%{transform:scale(1.2)rotate(5deg)}to{transform:scale(1)rotate(0)}}@keyframes feedback-icon-wrong{0%{transform:scale(.4)rotate(14deg)}65%{transform:scale(1.12)rotate(-5deg)}to{transform:scale(1)rotate(0)}}@keyframes answer-burst{0%{opacity:0;transform:rotate(var(--burst-angle)) translateX(4px) scale(0)}34%{opacity:1}to{opacity:0;transform:rotate(var(--burst-angle)) translateX(34px) scale(1)}}@keyframes unlock-toast-in{0%{opacity:0;transform:translate(-50%,-16px)scale(.9)}60%{opacity:1;transform:translate(-50%,5px)scale(1.025)}to{opacity:1;transform:translate(-50%)scale(1)}}@keyframes unlock-icon{0%{transform:scale(.5)rotate(-18deg)}55%{transform:scale(1.14)rotate(7deg)}to{transform:scale(1)rotate(0)}}@keyframes unlock-orbit{0%{opacity:0;transform:rotate(var(--orbit-angle)) translateX(8px) scale(0)}35%{opacity:1}to{opacity:0;transform:rotate(var(--orbit-angle)) translateX(38px) scale(.9)}}@keyframes gate-in{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes progress-sheen{0%,to{filter:brightness()}50%{filter:brightness(1.18)}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.001ms!important;animation-duration:.001ms!important;animation-iteration-count:1!important}}.app-shell{grid-template-columns:320px minmax(0,1fr);min-height:100vh;display:grid}.course-loading{color:#0958d9;background:#f5f7fb;align-content:center;place-items:center;gap:12px;min-height:100vh;display:grid}.course-loading .material-symbols-rounded{background:#eef5ff;border-radius:8px;width:52px;height:52px;font-size:30px;animation:1.5s ease-in-out infinite progress-sheen}.course-loading strong{color:#344054}.course-mobile-bar,.menu-scrim,.menu-close{display:none}.sidebar{background:#fff;border-right:1px solid #e5e7eb;height:100vh;padding:24px 18px;position:sticky;top:0;overflow:auto}.brand{align-items:center;gap:12px;margin-bottom:20px;display:flex}.course-switcher{gap:8px;margin-bottom:18px;display:grid}.course-switcher a{color:#344054;background:#fbfcff;border:1px solid #e5e7eb;border-radius:8px;grid-template-columns:1fr auto;align-items:center;gap:6px 10px;padding:10px 12px;text-decoration:none;transition:border-color .2s,background .2s,transform .2s;display:grid}.course-switcher a:hover,.course-switcher a.active{color:#0958d9;background:#eef5ff;border-color:#b9d7ff;transform:translate(2px)}.course-switcher span{color:#667085;font-size:12px}.course-switcher strong{align-items:center;gap:7px;display:inline-flex}.back-home{color:#344054;text-align:center;border:1px solid #d0d5dd;border-radius:8px;justify-content:center;align-items:center;gap:7px;margin-bottom:16px;padding:9px 10px;font-size:13px;font-weight:700;text-decoration:none;display:flex}.back-home:hover{color:#0958d9;border-color:#1677ff}.brand-mark{color:#fff;background:#1677ff;border-radius:8px;place-items:center;width:42px;height:42px;font-weight:800;display:grid}.brand strong,.brand span{display:block}.brand span,.progress-card small,nav small{color:#667085;font-size:12px}.progress-card{background:#fbfcff;border:1px solid #e5e7eb;border-radius:8px;margin-bottom:18px;padding:14px}.unlock-card{margin-bottom:18px}.unlock-card>button,.unlock-panel button{color:#fff;background:#1677ff;border:1px solid #1677ff;border-radius:8px;justify-content:center;align-items:center;gap:7px;width:100%;padding:10px 12px;font-weight:800;display:inline-flex}.unlock-panel{background:#eef5ff;border:1px solid #d6e4ff;border-radius:8px;gap:10px;margin-top:10px;padding:12px;display:grid}.unlock-panel label{color:#344054;gap:6px;font-size:13px;font-weight:800;display:grid}.unlock-panel input{color:#344054;background:#fff;border:1px solid #b9d7ff;border-radius:8px;width:100%;padding:10px 12px}.unlock-panel small{color:#cf1322;font-weight:800}.progress-top{justify-content:space-between;align-items:center;margin-bottom:10px;display:flex}.progress-top span,nav button small,.menu-close,.reset{align-items:center;gap:6px;display:inline-flex}.progress-bar{background:#e9edf5;border-radius:999px;height:8px;margin-bottom:8px;overflow:hidden}.progress-bar span{background:#1677ff;height:100%;transition:width .45s cubic-bezier(.22,1,.36,1);animation:2.4s ease-in-out infinite progress-sheen;display:block}nav{gap:8px;display:grid}nav button{text-align:left;color:#344054;background:0 0;border:1px solid #0000;border-radius:8px;grid-template-columns:34px 1fr;align-items:center;gap:10px;width:100%;padding:10px;transition:background .2s,border-color .2s,color .2s,transform .2s;display:grid}nav button:hover:not(.locked),nav button.active{color:#0958d9;background:#eef5ff;border-color:#b9d7ff}nav button:hover:not(.locked){transform:translate(3px)}nav button.locked{opacity:.55;cursor:not-allowed}nav button span:nth-child(2){min-width:0}nav button small{margin-top:2px;display:block}.chapter-index{background:#f2f4f7;border-radius:8px;place-items:center;width:34px;height:34px;font-weight:700;display:grid}.active .chapter-index{color:#fff;background:#1677ff}.reset{color:#475467;background:#fff;border:1px solid #d0d5dd;border-radius:8px;justify-content:center;width:100%;margin-top:16px;padding:10px 12px}.content{min-width:0;padding:30px}.module-view{max-width:1160px;margin:0 auto;animation:.52s both page-in}.module-hero{color:#fff;background-color:#0000;background-image:linear-gradient(120deg,#09234de6,#145281ad),url(https://images.unsplash.com/photo-1642790106117-e829e14a795f?auto=format&fit=crop&w=1600&q=80);background-position:50%;background-repeat:repeat,repeat;background-size:cover;background-attachment:scroll,scroll;background-origin:padding-box,padding-box;background-clip:border-box,border-box;border-radius:8px;flex-direction:column;justify-content:flex-end;min-height:230px;margin-bottom:22px;padding:34px;animation:.68s cubic-bezier(.22,1,.36,1) both hero-card-in;display:flex}.module-hero span,.step,.eyebrow{color:#1677ff;letter-spacing:0;text-transform:uppercase;align-items:center;gap:6px;font-size:12px;font-weight:700;display:inline-flex}.module-hero span{color:#bae0ff}.module-hero h1{letter-spacing:0;max-width:760px;margin:8px 0;font-size:clamp(34px,5vw,58px);line-height:1}.module-hero p{color:#e6f4ff;max-width:760px;margin:0;font-size:18px}.intuition-first{color:#111827;font-weight:900}.lesson-section,.problem-set,.resource-card,.chapter-illustration,.mission-panel{background:#fff;border:1px solid #e5e7eb;border-radius:8px;margin-bottom:18px;padding:24px;transition:border-color .2s,box-shadow .2s,transform .2s;animation:.56s cubic-bezier(.22,1,.36,1) both card-in}.lesson-section:hover,.problem-set:hover,.resource-card:hover,.visual-lab:hover,.chapter-illustration:hover,.concept-illustration:hover,.mission-panel:hover{border-color:#c6ddff;box-shadow:0 14px 34px #1f293712}.lesson-section:hover,.resource-card:hover,.chapter-illustration:hover{transform:translateY(-2px)}.chapter-illustration{grid-template-columns:minmax(280px,.95fr) minmax(260px,1.05fr);align-items:center;gap:22px;padding:0;display:grid;overflow:hidden}.chapter-illustration img{object-fit:cover;width:100%;height:100%;min-height:260px}.chapter-illustration div{padding:28px 28px 28px 6px}.chapter-illustration h2{letter-spacing:0;margin:6px 0 10px;font-size:clamp(26px,4vw,42px)}.chapter-illustration p{color:#475467;margin:0;line-height:1.65}.mission-panel{background:linear-gradient(#fff,#fff) padding-box padding-box,linear-gradient(135deg,#1677ff6b,#52c41a3d,#eb2f9642) border-box;border-color:#0000;grid-template-columns:minmax(260px,1fr) 160px;align-items:stretch;gap:18px;display:grid}.case-study-panel,.connection-map,.revision-sheet,.simulation-brief,.formula-sheet-panel,.worked-example-card{background:#fff;border:1px solid #e5e7eb;border-radius:8px;margin-bottom:18px;padding:24px;animation:.56s cubic-bezier(.22,1,.36,1) both card-in}.case-study-panel{background:linear-gradient(#fff,#fff) padding-box padding-box,linear-gradient(135deg,#52c41a52,#1677ff57) border-box;border-color:#0000}.case-study-panel h2,.connection-map h2,.revision-sheet h2,.formula-sheet-head h2{letter-spacing:0;margin:6px 0 10px;font-size:clamp(24px,3vw,36px)}.case-study-panel p,.connection-map p,.formula-sheet-head p,.worked-example-card p,.math-section-panel>div:first-child p{color:#475467;max-width:820px;margin:0;line-height:1.65}.why-matters{background:#fffbe6;border-left:4px solid #faad14;border-radius:0 8px 8px 0;margin-top:14px;padding:12px 14px}.why-matters strong{color:#ad6800;align-items:center;gap:6px;display:inline-flex}.why-matters p{margin:4px 0 0}.fs-lab{background:radial-gradient(circle at 8% 10%,#1677ff1f,#0000 28%),linear-gradient(135deg,#fff 0%,#f8fbff 100%);border:1px solid #d6e4ff;border-radius:8px;margin-bottom:18px;padding:24px;animation:.56s cubic-bezier(.22,1,.36,1) both card-in}.fs-lab-head{grid-template-columns:minmax(0,1fr) minmax(260px,.42fr);align-items:stretch;gap:18px;display:grid}.fs-lab-head h2{color:#111827;letter-spacing:0;margin:6px 0 10px;font-size:clamp(26px,3.5vw,42px)}.fs-lab-head p,.fs-stage-card span,.fs-insight-panel p{color:#475467;margin:0;line-height:1.6}.fs-stage-card,.fs-insight-panel article,.fs-statement-card{background:#ffffffeb;border:1px solid #e5e7eb;border-radius:8px}.fs-stage-card{gap:7px;padding:16px;display:grid}.fs-stage-card small,.fs-insight-panel small,.fs-card-title small{color:#1677ff;text-transform:uppercase;font-size:12px;font-weight:900}.fs-stage-card strong{color:#111827;font-size:18px}.fs-stage-track{grid-template-columns:repeat(8,minmax(0,1fr));gap:8px;margin:18px 0;display:grid}.fs-stage-track span{color:#667085;text-align:center;background:#fbfcff;border:1px solid #e5e7eb;border-radius:8px;justify-items:center;gap:5px;min-width:0;padding:9px 7px;font-size:12px;font-weight:800;display:grid}.fs-stage-track small{color:#667085;background:#eef0f4;border-radius:8px;place-items:center;width:24px;height:24px;display:grid}.fs-stage-track span.available{color:#237804;background:#f6ffed;border-color:#b7eb8f}.fs-stage-track span.available small{color:#fff;background:#52c41a}.fs-stage-track span.active{color:#0958d9;background:#eef5ff;border-color:#91caff}.fs-stage-track span.active small{background:#1677ff}.fs-controls{justify-content:space-between;align-items:center;gap:12px;margin-bottom:18px;display:flex}.statement-tabs{flex-wrap:wrap;gap:8px;display:flex}.statement-tabs button{color:#344054;background:#fff;border:1px solid #d0d5dd;border-radius:8px;align-items:center;gap:7px;padding:9px 11px;font-weight:800;display:inline-flex}.statement-tabs button.active{color:#fff;background:#1677ff;border-color:#1677ff}.statement-tabs button.locked{opacity:.56;cursor:not-allowed}.fs-controls label{color:#667085;text-transform:uppercase;gap:5px;min-width:150px;font-size:12px;font-weight:900;display:grid}.fs-controls select{color:#344054;background:#fff;border:1px solid #d0d5dd;border-radius:8px;padding:9px 10px;font-weight:800}.fs-grid{grid-template-columns:minmax(0,1.45fr) minmax(280px,.55fr);align-items:start;gap:18px;display:grid}.fs-statement-card{overflow:hidden}.fs-card-title{border-bottom:1px solid #e5e7eb;justify-content:space-between;align-items:start;gap:14px;padding:16px;display:flex}.fs-card-title h3{color:#111827;letter-spacing:0;margin:4px 0 0;font-size:20px}.fs-card-title>span{color:#0958d9;white-space:nowrap;background:#eef5ff;border:1px solid #d6e4ff;border-radius:8px;padding:7px 9px;font-size:12px;font-weight:900}.fs-table{display:grid;overflow-x:auto}.fs-row{color:#344054;text-align:left;background:0 0;border:0;border-bottom:1px solid #eef0f4;grid-template-columns:minmax(170px,1.3fr) repeat(3,minmax(82px,.5fr));align-items:center;gap:10px;min-width:620px;padding:11px 16px;display:grid}button.fs-row{cursor:help}button.fs-row:hover{background:#f8fbff}.fs-row-head{color:#667085;text-transform:uppercase;background:#fbfcff;font-size:12px;font-weight:900}.fs-row strong,.fs-row-head span:not(:first-child){font-variant-numeric:tabular-nums;justify-self:end}.fs-row span:first-child{font-weight:800}.fs-row .active-year,.fs-row-head .active-year{color:#0958d9}.fs-row strong.active-year{background:#eef5ff;border-radius:8px;padding:5px 8px}.fs-row em{color:#667085;grid-column:1/-1;font-size:12px;font-style:normal;line-height:1.45;display:none}.fs-row:hover em{display:block}.fs-row:focus-visible em{display:block}.fs-insight-panel{gap:12px;display:grid}.fs-insight-panel article{gap:10px;padding:16px;display:grid}.fs-insight-panel h3{color:#111827;letter-spacing:0;margin:0;font-size:19px}.audit-pill{color:#ad6800;background:#fffbe6;border:1px solid #ffe58f;border-radius:8px;padding:8px 10px;font-size:12px;font-weight:800;line-height:1.35;display:inline-flex}.fs-ratio-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;display:grid}.fs-ratio-grid span{color:#475467;background:#fbfcff;border:1px solid #e5e7eb;border-radius:8px;gap:2px;padding:10px;font-size:12px;font-weight:800;display:grid}.fs-ratio-grid b{color:#111827;font-size:20px}.fs-ratio-grid .tone-good{background:#f6ffed;border-color:#b7eb8f}.fs-ratio-grid .tone-watch{background:#fffbe6;border-color:#ffe58f}.fs-ratio-grid .tone-risk{background:#fff2f0;border-color:#ffccc7}.valuation-gauge{background:#e5e7eb;border-radius:999px;height:14px;overflow:hidden}.valuation-gauge span{border-radius:inherit;background:linear-gradient(90deg,#faad14,#52c41a);height:100%;display:block}.valuation-readout{color:#475467;gap:5px;font-size:13px;font-weight:800;display:grid}.valuation-readout strong{color:#237804}.formula-sheet-grid{grid-template-columns:repeat(auto-fit,minmax(min(100%,340px),1fr));gap:18px;margin-top:22px;display:grid}.formula-sheet-card{background:#fbfcff;border:1px solid #e5e7eb;border-radius:8px;align-content:start;gap:14px;padding:20px;display:grid}.formula-sheet-card h3{color:#111827;letter-spacing:0;margin:0;font-size:18px}.formula-display{color:#0958d9;background:#fff;border:1px solid #d6e4ff;border-radius:8px;align-items:center;gap:12px;padding:18px 16px;display:grid;overflow:visible}.math-line{letter-spacing:0;text-align:center;flex-wrap:wrap;justify-content:center;align-items:center;gap:10px;font-family:Georgia,Times New Roman,serif;font-size:clamp(20px,2vw,28px);font-weight:800;line-height:1.2;display:flex}.math-lhs,.math-rhs{flex-wrap:wrap;justify-content:center;align-items:center;gap:8px;min-width:0;display:inline-flex}.math-equals,.math-operator{font-family:Georgia,Times New Roman,serif;font-weight:700}.math-symbol{align-items:baseline;gap:1px;font-size:1.1em;display:inline-flex}.math-fraction{text-align:center;vertical-align:middle;grid-template-rows:auto auto;align-items:center;min-width:min(100%,92px);max-width:100%;display:inline-grid}.math-numerator,.math-denominator{overflow-wrap:anywhere;white-space:normal;padding:2px 10px;display:block}.math-numerator{border-bottom:2px solid}.math-denominator{font-size:.92em}.formula-sheet-card ul{color:#475467;gap:5px;margin:0;padding-left:18px;display:grid}.formula-sheet-card p{color:#475467;margin:0;line-height:1.55}.math-section-panel{margin-bottom:18px}.math-section-panel>div:first-child{margin-bottom:12px}.math-section-panel h2,.worked-example-card h3{letter-spacing:0;margin:6px 0 10px;font-size:clamp(24px,3vw,34px)}.worked-example-card{background:radial-gradient(circle at 12% 12%,#1677ff1a,#0000 24%),#fff}.worked-steps{counter-reset:worked-step;gap:10px;margin:18px 0;padding:0;list-style:none;display:grid}.worked-steps li{counter-increment:worked-step;background:#fbfcff;border:1px solid #e5e7eb;border-radius:8px;grid-template-columns:auto minmax(0,1fr);align-items:start;gap:10px 12px;padding:12px;display:grid}.worked-steps li:before{content:counter(worked-step);color:#fff;background:#1677ff;border-radius:8px;place-items:center;width:28px;height:28px;font-weight:900;display:grid}.worked-steps strong{color:#111827;display:block}.worked-steps span{color:#475467;grid-column:2;line-height:1.55;display:block}.worked-examples-stack,.grouped-practice-shell,.grouped-parts{gap:18px;display:grid}.calculation-notebook{background:#fff;border-left:4px solid #1677ff;position:relative;overflow:hidden}.calculation-notebook:before{content:"";pointer-events:none;background:#dbeafe;width:1px;position:absolute;top:0;bottom:0;left:38px;right:auto}.calculation-notebook>*{position:relative}.worked-steps code{color:#0b3b75;white-space:normal;background:#f4f7fb;border:1px solid #dbe5f0;border-radius:8px;grid-column:2;padding:12px 14px;font-family:Inter,sans-serif;font-size:15px;font-weight:750;line-height:1.65;display:block;overflow-x:auto}.grouped-practice-shell{margin-top:22px}.grouped-practice-card{background:#fff;border:1px solid #d7e0ea;border-left:4px solid #1677ff;border-radius:8px;overflow:hidden;box-shadow:0 12px 30px #1f29370f}.grouped-practice-card>header{border-bottom:1px solid #e5e7eb;justify-content:space-between;align-items:flex-start;gap:20px;padding:20px 22px;display:flex}.grouped-practice-card>header span{color:#1677ff;letter-spacing:.08em;text-transform:uppercase;font-size:12px;font-weight:900}.grouped-practice-card h3{color:#111827;margin:5px 0 7px;font-size:22px}.grouped-practice-card>header p{color:#475467;max-width:820px;margin:0;line-height:1.6}.grouped-practice-card>header>strong{color:#344054;background:#f4f7fb;border:1px solid #dbe5f0;border-radius:8px;flex:none;padding:8px 10px;font-size:12px}.grouped-parts{gap:0}.grouped-part{border-bottom:1px solid #edf0f4;grid-template-columns:42px minmax(0,1fr);gap:16px;padding:18px 22px;display:grid}.grouped-part:last-child{border-bottom:0}.part-label{color:#0969da;border:1px solid #1677ff;border-radius:8px;place-items:center;width:38px;height:38px;font-weight:900;display:grid}.part-meta{color:#667085;flex-wrap:wrap;justify-content:space-between;gap:8px;margin-bottom:8px;font-size:12px;font-weight:800;display:flex}.grouped-part .quiz{box-shadow:none;background:0 0;border:0;padding:0}.grouped-part .quiz-title{color:#1f2937}.course-content-slot{background:#fff;border:1px solid #d7e0ea;border-left:4px solid #1677ff;border-radius:8px;grid-template-columns:auto minmax(0,1fr);align-items:start;gap:20px;padding:clamp(22px,4vw,40px);display:grid}.slot-mark{color:#0969da;background:#eaf3ff;border-radius:8px;place-items:center;width:52px;height:52px;display:grid}.slot-mark .material-symbols-rounded{font-size:28px}.course-content-slot h2{color:#111827;margin:8px 0;font-size:clamp(25px,4vw,38px)}.course-content-slot p{color:#475467;max-width:760px;line-height:1.7}.slot-link{color:#fff;background:#1677ff;border-radius:8px;margin-top:8px;padding:11px 14px;font-weight:850;text-decoration:none;display:inline-flex}.embedded-problem-set{margin-top:18px}.case-actions,.map-chain,.revision-grid,.constraint-list,.simulation-inputs{gap:10px;margin-top:16px;display:grid}.case-actions{grid-template-columns:repeat(3,minmax(0,1fr))}.case-actions span,.map-chain span,.revision-grid article,.constraint-list span,.simulation-inputs span{color:#344054;background:#fbfcff;border:1px solid #e5e7eb;border-radius:8px;padding:12px;line-height:1.45}.map-chain{grid-template-columns:repeat(auto-fit,minmax(190px,1fr))}.map-chain span{position:relative}.revision-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.revision-grid strong{color:#111827;margin-bottom:6px;display:block}.revision-grid p{color:#475467;margin:0;line-height:1.55}.revision-grid small{color:#667085;margin-top:8px;line-height:1.45;display:block}.constraint-list,.simulation-inputs{grid-template-columns:repeat(auto-fit,minmax(210px,1fr))}.decision-prompt{background:#eef5ff;border-left:4px solid #1677ff;border-radius:0 8px 8px 0;margin-top:16px;padding:12px 14px}.decision-prompt strong{color:#0958d9;align-items:center;gap:6px;display:inline-flex}.decision-prompt p{margin:4px 0 0}.exam-mode{background:#fbfdff;border-color:#d6e4ff}.mission-brief h2{letter-spacing:0;margin:6px 0 10px;font-size:clamp(26px,3vw,38px)}.mission-brief p{color:#475467;margin:0;line-height:1.65}.reward-card{text-align:center;background:#eef5ff;border:1px solid #d6e4ff;border-radius:8px;place-content:center;gap:4px;display:grid}.reward-card span,.reward-card small{color:#667085;text-transform:uppercase;justify-content:center;align-items:center;gap:5px;font-size:12px;font-weight:700;display:inline-flex}.reward-card strong{color:#0958d9;font-size:28px}.objective-list{grid-column:1/-1;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;display:grid}.objective-list span{color:#344054;background:#fbfcff;border:1px solid #e5e7eb;border-radius:8px;padding:10px 12px;line-height:1.45}.resource-card{justify-content:space-between;align-items:center;gap:18px;display:flex}.resource-card h2{margin:6px 0;font-size:22px}.resource-card p{color:#475467;margin:0;line-height:1.6}.resource-card a{color:#fff;background:#1677ff;border:1px solid #1677ff;border-radius:8px;flex:none;align-items:center;gap:7px;padding:10px 14px;font-weight:700;text-decoration:none;transition:box-shadow .2s,transform .2s;display:inline-flex}.resource-card a:hover{transform:translateY(-2px);box-shadow:0 12px 26px #1677ff38}.lesson-section{grid-template-columns:minmax(270px,.75fr) minmax(360px,1.25fr);align-items:start;gap:22px;display:grid}.lesson-section.no-visual{grid-template-columns:1fr}.lesson-section.no-visual .lesson-copy{max-width:850px}.concept-illustration{background:radial-gradient(circle at 18% 14%,#1677ff2e,#0000 28%),radial-gradient(circle at 86% 20%,#52c41a26,#0000 28%),linear-gradient(135deg,#fbfcff,#f7fbff);border:1px solid #e5e7eb;border-radius:8px;flex-direction:column;justify-content:flex-end;min-height:280px;padding:18px;transition:border-color .2s,box-shadow .2s,transform .2s;animation:.62s both visual-in;display:flex}.concept-illustration:hover{transform:translateY(-1px)}.concept-icon{color:#fff;background:#1677ff;border-radius:8px;place-items:center;width:58px;height:58px;margin-bottom:auto;font-weight:900;display:grid;box-shadow:0 14px 28px #1677ff33}.concept-icon.hedge{background:#52c41a}.concept-icon.forward,.concept-icon.costOfCarry{background:#fa8c16}.concept-icon.blackScholes,.concept-icon.binomial{background:#722ed1}.concept-icon.spread,.concept-icon.payoff{background:#eb2f96}.concept-icon.strategy,.concept-icon.stakeholder{background:#1677ff}.concept-icon.dividend{background:#fa8c16}.concept-icon.bond,.concept-icon.duration{background:#13c2c2}.concept-illustration h3{letter-spacing:0;margin:18px 0 8px;font-size:22px}.concept-illustration p{color:#475467;margin:0;line-height:1.55}.lesson-copy h2,.problem-head h2{letter-spacing:0;margin:6px 0 10px;font-size:25px}.quest-line{grid-template-columns:auto minmax(0,1fr);align-items:start;gap:10px;margin:0 0 14px;display:grid}.quest-line span{color:#ad6800;white-space:nowrap;background:#fff7e6;border-radius:999px;padding:5px 8px;font-size:12px;font-weight:800}.quest-line p{color:#344054;margin:0;font-weight:700;line-height:1.45}.lesson-copy p,.problem-head p,.gate-panel p{color:#475467;overflow-wrap:anywhere;line-height:1.65}.eli5{background:#f6ffed;border-left:4px solid #52c41a;border-radius:0 8px 8px 0;margin-top:16px;padding:12px 14px;animation:.52s both soft-pop}.eli5 strong{color:#237804;align-items:center;gap:6px;display:inline-flex}.eli5 p{margin:4px 0 0}.sfm-accordion{gap:12px;margin-bottom:18px;display:grid}.sfm-accordion.compact{margin:16px 0 0}.sfm-accordion-item{background:#fff;border:1px solid #e5e7eb;border-radius:8px;overflow:hidden;box-shadow:0 10px 28px #1f29370d}.sfm-accordion-trigger{color:#111827;text-align:left;background:#fff;border:0;justify-content:space-between;align-items:center;gap:14px;width:100%;padding:16px 18px;font-weight:850;display:flex}.sfm-accordion-trigger span{min-width:0}.sfm-accordion-trigger small{color:#1677ff;text-transform:uppercase;margin-bottom:3px;font-size:11px;font-weight:900;display:block}.sfm-accordion-trigger i{transition:transform .2s}.sfm-accordion-trigger[data-state=open] i{transform:rotate(180deg)}.sfm-accordion-trigger:hover,.sfm-accordion-trigger[data-state=open]{color:#0958d9;background:#eef5ff}.sfm-accordion-content{background:#fbfcff;border-top:1px solid #e5e7eb;overflow:hidden}.sfm-accordion-content[data-state=open]{animation:.22s both accordion-down}.sfm-accordion-content[data-state=closed]{animation:.2s both accordion-up}.sfm-accordion-content .lesson-section,.support-concept-card{box-shadow:none;border:0;border-radius:0;margin:0}.support-concept-card{background:0 0;gap:12px;padding:16px;display:grid}.support-concept-card p{color:#475467;margin:0;line-height:1.65}.support-concept-card small{color:#667085;line-height:1.5}.visual-lab{background:#fbfcff;border:1px solid #e5e7eb;border-radius:8px;min-width:0;padding:16px;transition:border-color .2s,box-shadow .2s,transform .2s;animation:.62s both visual-in}.visual-lab:hover{transform:translateY(-1px)}.lab-header,.problem-head,.gate-panel{justify-content:space-between;align-items:center;gap:16px;display:flex}.lab-header h3{margin:4px 0 0;font-size:18px}.metric{background:#eef5ff;border:1px solid #d6e4ff;border-radius:8px;min-width:86px;padding:8px 10px;animation:2.8s ease-in-out infinite metric-pulse}.metric span,.metric strong{display:block}.metric span{color:#667085;font-size:12px}.controls{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:16px 0;display:grid}.controls.mini{max-width:280px;margin:0 auto 18px}.controls label{color:#475467;grid-template-columns:80px 1fr 42px;align-items:center;gap:8px;min-width:0;font-size:13px;display:grid}.controls select{background:#fff;border:1px solid #d0d5dd;border-radius:8px;grid-column:2/4;width:100%;padding:8px 10px}.controls input[type=range]{accent-color:#1677ff;width:100%}.controls input[type=range]:active{transform:scaleY(1.12)}.controls input[type=range]:focus-visible{outline-offset:3px;outline:3px solid #1677ff3d}.controls select:focus-visible{outline-offset:3px;outline:3px solid #1677ff3d}.chart-wrap{min-width:0;height:320px;animation:.62s both chart-reveal}.echarts-visual{border-radius:8px;width:100%;height:100%;min-height:300px}.fsav-visual-card{width:100%}.fsav-chart-frame{background:linear-gradient(#1677ff0f,#ffffffb8);border:1px solid #1677ff1f;border-radius:18px;height:340px;padding:.75rem}.fsav-bar-board,.fsav-matrix,.fsav-flow{background:linear-gradient(#1677ff0f,#fffc);border:1px solid #1677ff1f;border-radius:18px;padding:1rem;box-shadow:0 18px 42px #10182814}.fsav-bar-board{gap:.85rem;display:grid}.fsav-bar-row{gap:.45rem;display:grid}.fsav-bar-row div{color:#344054;justify-content:space-between;align-items:center;gap:1rem;font-size:.92rem;display:flex}.fsav-bar-row strong{color:#101828}.fsav-bar-row span{color:#667085;font-weight:800}.fsav-bar-row i{background:#eef4ff;border-radius:999px;height:14px;display:block;overflow:hidden}.fsav-bar-row b{border-radius:inherit;background:linear-gradient(90deg,#1677ff,#52c41a);height:100%;display:block}.fsav-bar-row.tone-watch b{background:linear-gradient(90deg,#faad14,#fa8c16)}.fsav-bar-row.tone-risk b{background:linear-gradient(90deg,#ff7875,#eb2f96)}.fsav-matrix{gap:.55rem;display:grid}.fsav-matrix-head,.fsav-matrix-row{grid-template-columns:1.35fr repeat(3,minmax(0,1fr));align-items:stretch;gap:.5rem;display:grid}.fsav-matrix-head strong,.fsav-matrix-row strong,.fsav-matrix-row span{color:#344054;background:#ffffffd1;border-radius:12px;padding:.75rem;font-size:.88rem;font-weight:800}.fsav-matrix-head strong,.fsav-matrix-row span{text-align:center}.fsav-matrix-head strong{color:#1677ff}.fsav-matrix-row span{color:#101828;background:#f5f9ff}.fsav-flow{grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:.75rem;display:grid}.fsav-flow div{background:#fff;border:1px solid #1677ff1f;border-radius:16px;min-height:104px;padding:.9rem}.fsav-flow small{color:#1677ff;background:#e6f4ff;border-radius:999px;place-items:center;width:28px;height:28px;font-weight:900;display:inline-grid}.fsav-flow strong{color:#101828;margin-top:.75rem;line-height:1.25;display:block}.fsav-flow div.warning small{color:#cf1322;background:#fff1f0}.fsav-flow div.terminal{background:linear-gradient(135deg,#e6f4ff,#f6ffed)}.fs-question-panel ol{gap:.7rem;margin:.75rem 0 0;padding-left:1.15rem;display:grid}.fs-question-panel li{color:#475467;line-height:1.5}.scenario-bars{border-top:1px solid #e5e7eb;gap:8px;margin-top:12px;padding-top:12px;display:grid}.scenario-row{color:#475467;grid-template-columns:48px minmax(0,1fr) 68px;align-items:center;gap:10px;font-size:12px;display:grid}.scenario-row strong{color:#344054;text-align:right}.scenario-track{background:#edf0f5;border-radius:999px;height:9px;overflow:hidden}.scenario-track i{border-radius:inherit;background:#ff4d4f;height:100%;animation:.65s cubic-bezier(.22,1,.36,1) both bar-grow;display:block}.scenario-track i.positive{background:#52c41a}.tree-panel{background:#fff;border-radius:8px;padding:18px}.tree{gap:14px;padding-bottom:4px;display:grid;overflow-x:auto}.tree-row{justify-content:center;gap:16px;display:flex}.tree-row span{text-align:center;color:#237804;background:#f6ffed;border:1px solid #b7eb8f;border-radius:8px;min-width:74px;padding:8px 10px;font-weight:700;animation:.46s cubic-bezier(.22,1,.36,1) both tree-node-in}.quiz{background:#fff;border:1px solid #e5e7eb;border-radius:8px;grid-column:1/-1;padding:16px;animation:.5s both quiz-in}.quiz.compact{padding:14px}.quiz-title{align-items:flex-start;gap:8px;margin-bottom:12px;font-weight:700;display:flex}.choices{gap:8px;display:grid}.input-answer{grid-template-columns:minmax(0,1fr) auto;gap:10px;display:grid}.input-answer input{color:#344054;border:1px solid #d0d5dd;border-radius:8px;min-width:0;padding:10px 12px;transition:border-color .18s,box-shadow .18s}.input-answer input:focus{border-color:#1677ff;outline:2px solid #e6f4ff}.input-answer button{color:#fff;background:#1677ff;border:1px solid #1677ff;border-radius:8px;justify-content:center;align-items:center;gap:7px;padding:10px 14px;font-weight:700;transition:box-shadow .2s,transform .2s;display:inline-flex}.input-answer button:hover{transform:translateY(-1px);box-shadow:0 10px 22px #1677ff33}.choices button{color:#344054;text-align:left;background:#fff;border:1px solid #d0d5dd;border-radius:8px;align-items:center;gap:10px;min-height:42px;padding:9px 10px;transition:border-color .18s,background .18s,transform .18s,box-shadow .18s;display:flex}.choices button span{background:#f2f4f7;border-radius:50%;flex:none;place-items:center;width:24px;height:24px;font-size:12px;font-weight:800;display:grid}.choices button:hover{border-color:#1677ff;transform:translateY(-1px);box-shadow:0 8px 18px #1677ff1a}.choices button.chosen{background:#eef5ff;border-color:#1677ff}.choices button.correct{background:#f6ffed;border-color:#52c41a;animation:.42s both answer-correct}.choices button.wrong{background:#fff1f0;border-color:#ff4d4f;animation:.32s both answer-wrong}.feedback{color:#874d00;background:#fff7e6;border-radius:8px;align-items:flex-start;gap:8px;margin-top:10px;padding:10px 12px;animation:.36s both feedback-in;display:flex;position:relative}.feedback-icon{z-index:1;position:relative}.feedback.good .feedback-icon{animation:.54s cubic-bezier(.2,.85,.25,1.25) both feedback-icon-good}.feedback.error .feedback-icon{animation:.44s cubic-bezier(.2,.8,.3,1.2) both feedback-icon-wrong}.answer-burst{pointer-events:none;width:1px;height:1px;position:absolute;top:20px;left:20px}.answer-burst i{--burst-angle:calc(var(--burst-index) * 45deg);background:#52c41a;border-radius:999px;width:4px;height:4px;animation:.62s cubic-bezier(.18,.8,.25,1) both answer-burst;position:absolute}.feedback.error .answer-burst i{background:#ff7875;animation-duration:.44s}.unlock-celebration{z-index:100;color:#135200;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);background:#f6ffedf5;border:1px solid #b7eb8f;border-radius:12px;align-items:center;gap:14px;min-width:min(360px,100vw - 32px);padding:14px 18px;animation:.62s cubic-bezier(.18,.85,.25,1.15) both unlock-toast-in;display:flex;position:fixed;top:24px;left:50%;box-shadow:0 22px 60px #23780433}.unlock-celebration>span:last-child,.unlock-celebration strong,.unlock-celebration small{display:block}.unlock-celebration small{color:#3f6600;margin-top:3px}.unlock-orbit{color:#fff;background:#52c41a;border-radius:50%;flex:none;place-items:center;width:42px;height:42px;display:grid;position:relative}.unlock-orbit .material-symbols-rounded{animation:.68s cubic-bezier(.2,.85,.25,1.3) both unlock-icon}.unlock-orbit i{--orbit-angle:calc(var(--orbit-index) * 36deg);background:#95de64;border-radius:50%;width:5px;height:5px;animation:.82s cubic-bezier(.2,.75,.2,1) .18s both unlock-orbit;position:absolute}.feedback p{margin:0}.feedback.good{color:#237804;background:#f6ffed}.problem-head{margin-bottom:16px}.score-pill{text-align:center;background:#fff7e6;border:1px solid #ffd591;border-radius:8px;min-width:116px;padding:10px 14px}.score-pill.passed{background:#f6ffed;border-color:#b7eb8f}.score-pill strong,.score-pill span{display:block}.score-pill span{color:#667085;font-size:12px}.problem-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;display:grid}.practice-shell{gap:18px;display:grid}.practice-header,.formula-intuition,.worked-example{background:#fff;border:1px solid #e5e7eb;border-radius:8px;padding:24px;animation:.56s cubic-bezier(.22,1,.36,1) both card-in}.practice-header{justify-content:space-between;align-items:center;gap:18px;display:flex}.practice-header h2,.formula-intuition h2,.worked-example h2{letter-spacing:0;margin:6px 0 8px;font-size:clamp(26px,4vw,40px)}.practice-header p,.formula-intuition p,.worked-example p{color:#475467;margin:0;line-height:1.6}.timer-card{text-align:center;background:#eef5ff;border:1px solid #d6e4ff;border-radius:8px;min-width:190px;padding:14px}.timer-card.warning{background:#fff7e6;border-color:#ffd591}.timer-card span,.timer-card strong{display:block}.timer-card strong{letter-spacing:0;margin:4px 0 10px;font-size:34px}.timer-card div{grid-template-columns:repeat(2,1fr);gap:8px;display:grid}.timer-card button,.numeric-answer button{color:#fff;background:#1677ff;border:1px solid #1677ff;border-radius:8px;padding:9px 10px;font-weight:700}.timer-card button:nth-child(2){color:#344054;background:#fff;border-color:#d0d5dd}.practice-tabs{grid-template-columns:repeat(5,minmax(0,1fr));gap:10px;display:grid}.practice-tabs button,.practice-tab{color:#344054;text-align:left;background:#fff;border:1px solid #e5e7eb;border-radius:8px;min-height:86px;padding:12px;font-weight:800;transition:border-color .2s,box-shadow .2s,transform .2s}.practice-tabs button:hover,.practice-tabs button.active,.practice-tab[data-state=active]{border-color:#1677ff;transform:translateY(-2px);box-shadow:0 12px 28px #1677ff1a}.practice-tabs button span,.practice-tab span{color:#1677ff;text-transform:uppercase;margin-bottom:6px;font-size:12px;display:block}.formula-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:16px;display:grid}.formula-card{background:radial-gradient(circle at 0 0,#1677ff1f,#0000 30%),#fbfcff;border:1px solid #e5e7eb;border-radius:8px;padding:16px}.formula-card>strong{margin-bottom:12px;display:block}.formula-line{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.formula-token{color:#0958d9;cursor:help;background:#eef5ff;border:1px solid #d6e4ff;border-radius:8px;padding:8px 10px;font-family:Cascadia Mono,Consolas,monospace;font-size:13px;display:inline-flex;position:relative}.formula-token small{z-index:4;color:#fff;opacity:0;pointer-events:none;background:#111827;border:1px solid #d0d5dd;border-radius:8px;width:min(260px,78vw);padding:10px;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Noto Sans,Ubuntu,Cantarell,Helvetica Neue,sans-serif;line-height:1.45;transition:opacity .18s,transform .18s;position:absolute;bottom:calc(100% + 8px);left:0;transform:translateY(6px)}.formula-token:hover small,.formula-token:focus small{opacity:1;transform:translateY(0)}.given-list{flex-wrap:wrap;gap:8px;margin:14px 0;display:flex}.given-list span{color:#475467;background:#fbfcff;border:1px solid #e5e7eb;border-radius:8px;padding:8px 10px;font-size:13px}.given-list.small span{font-size:12px}.solution-steps{gap:10px;display:grid}.solution-steps article,.mini-step{background:#f5f9ff;border-left:4px solid #1677ff;border-radius:0 8px 8px 0;padding:12px}.solution-steps code,.mini-step code{color:#0958d9;white-space:pre-wrap;margin:8px 0;display:block}.answer-callout{background:#f6ffed;border:1px solid #b7eb8f;border-radius:8px;margin-top:14px;padding:14px}.answer-callout p{color:#237804;margin:6px 0}.answer-callout small{color:#475467}.numeric-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;display:grid}.numeric-card{background:#fff;border:1px solid #e5e7eb;border-radius:8px;padding:16px}.numeric-card h3{letter-spacing:0;margin:10px 0;font-size:18px;line-height:1.35}.difficulty-row{color:#667085;text-transform:uppercase;justify-content:space-between;gap:12px;font-size:12px;font-weight:800;display:flex}.numeric-answer{color:#475467;grid-template-columns:1fr auto;align-items:end;gap:8px;margin-top:12px;font-size:13px;font-weight:700;display:grid}.numeric-answer input{border:1px solid #d0d5dd;border-radius:8px;grid-column:1;min-width:0;padding:10px 12px}.numeric-answer button{grid-area:1/2/span 2}.hint{color:#667085;margin-top:10px;display:block}.numeric-card details{margin-top:10px}.numeric-card summary{color:#0958d9;cursor:pointer;font-weight:700}.case-table-wrap{background:#fff;border:1px solid #dbe4ee;border-radius:10px;overflow-x:auto}.case-table{border-collapse:collapse;width:100%;min-width:780px}.case-table th,.case-table td{text-align:left;vertical-align:top;border-bottom:1px solid #e5e7eb;padding:14px}.case-table thead th{color:#344054;letter-spacing:.04em;text-transform:uppercase;background:#f4f8fc;font-size:12px}.case-table tbody tr:last-child th,.case-table tbody tr:last-child td{border-bottom:0}.case-table tbody>tr>th{width:64px}.case-prompt{color:#1d2939;width:42%;font-weight:650;line-height:1.5}.case-row-label{color:#0958d9;background:#e8f1ff;border-radius:50%;place-items:center;width:34px;height:34px;font-weight:900;display:inline-grid}.case-answer{color:#667085;gap:6px;min-width:230px;font-size:12px;font-weight:750;display:grid}.case-answer>div{gap:8px;display:flex}.case-answer input{border:1px solid #d0d5dd;border-radius:8px;width:150px;min-width:0;padding:10px 12px}.case-answer button{color:#fff;background:#1677ff;border:1px solid #1677ff;border-radius:8px;padding:9px 12px;font-weight:700}.case-result{min-width:170px}.case-result .feedback{margin-top:0}.case-result details{margin-top:8px}.case-result summary{color:#0958d9;cursor:pointer;font-size:13px;font-weight:700}.case-pending{color:#98a2b3;font-size:13px}.gate-panel{background:#eef5ff;border:1px solid #d6e4ff;border-radius:8px;margin-top:18px;padding:16px;animation:.54s both gate-in}.gate-panel p{margin:4px 0 0}.gate-panel strong{align-items:center;gap:6px;display:inline-flex}.gate-panel button{color:#fff;white-space:nowrap;background:#1677ff;border:1px solid #1677ff;border-radius:8px;justify-content:center;align-items:center;gap:7px;padding:10px 14px;font-weight:700;transition:box-shadow .2s,transform .2s;display:inline-flex}.gate-panel button:not(:disabled):hover{transform:translateY(-2px);box-shadow:0 12px 26px #1677ff38}.gate-panel button:disabled{color:#98a2b3;cursor:not-allowed;background:#f2f4f7;border-color:#d0d5dd}@media (max-width:980px){.projects-layout{grid-template-columns:1fr}.project-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.course-path-row{grid-template-columns:7px minmax(0,1fr) auto}.course-path-row em{grid-column:auto;justify-self:start;min-width:0}.home-stats,.course-showcase-grid,.site-footer,.optimizer-content,.footer-links{grid-template-columns:1fr}.home-stats{margin-top:18px}.optimizer-content article:first-child,.optimizer-content article:last-child{grid-column:auto}.app-shell{grid-template-columns:1fr}.sidebar{height:auto;position:static}.sidebar nav{grid-template-columns:repeat(2,minmax(0,1fr))}.site-links{display:flex}.lesson-section,.chapter-illustration,.problem-grid,.formula-grid,.numeric-grid,.mission-panel,.objective-list,.case-actions,.fs-lab-head,.fs-grid,.revision-grid{grid-template-columns:1fr}.fs-stage-track{grid-template-columns:repeat(4,minmax(0,1fr))}.fs-controls,.practice-header{flex-direction:column;align-items:stretch}.practice-tabs{padding-bottom:8px;display:flex;overflow-x:auto}.practice-tabs button{min-width:220px}.chapter-illustration div{padding:22px}.chapter-illustration img{min-height:220px}}@media (max-width:620px){.project-grid{grid-template-columns:1fr}.course-path-row{grid-template-columns:7px minmax(0,1fr)}.course-path-row em{grid-column:2;justify-self:start}.site-nav{flex-direction:column;align-items:flex-start}.site-links{grid-template-columns:1fr;width:100%;display:grid}.home-hero{grid-template-columns:1fr;gap:18px;min-height:auto;padding:16px}.hero-media{order:2;min-height:0;padding:4px 0;display:flex}.hero-copy{order:1}.ascii-card{width:100%}.optimizer-hero{min-height:520px;padding:24px 18px}.home-hero h1{font-size:clamp(42px,15vw,64px)}.home-hero p{font-size:18px}.hero-actions{grid-template-columns:1fr;display:grid}.hero-actions a{text-align:center}.projects-section,.course-showcase,.optimizer-content{padding:28px 16px}.site-footer{margin-left:16px;margin-right:16px;padding:20px}.project-card{min-height:210px;padding:18px}.content,.lesson-section,.problem-set,.resource-card,.mission-panel,.fs-lab,.case-study-panel,.connection-map,.revision-sheet,.simulation-brief{padding:16px}.app-shell{padding-top:64px;display:block}.course-mobile-bar{z-index:8;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:#fffffff0;border-bottom:1px solid #e5e7eb;grid-template-columns:44px minmax(0,1fr) auto;align-items:center;gap:10px;min-height:64px;padding:10px 14px;display:grid;position:fixed;top:0;bottom:auto;left:0;right:0}.course-mobile-bar button{background:#fff;border:1px solid #d0d5dd;border-radius:8px;place-items:center;gap:4px;width:42px;height:42px;padding:9px;display:grid}.mobile-theme-toggle{width:auto;height:42px;padding:8px 10px;font-size:12px}.course-mobile-bar button .material-symbols-rounded{color:#344054;background:0 0;border-radius:0;width:auto;height:auto;font-size:24px;display:inline-flex}.course-mobile-bar strong,.course-mobile-bar small{min-width:0;display:block}.course-mobile-bar small{color:#667085;text-overflow:ellipsis;white-space:nowrap;font-size:12px;overflow:hidden}.menu-scrim{z-index:9;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);background:#0f172a6b;border:0;display:block;position:fixed;top:0;bottom:0;left:0;right:0}.menu-close{color:#344054;background:#fff;border:1px solid #d0d5dd;border-radius:8px;justify-content:center;align-items:center;gap:7px;width:100%;margin-bottom:10px;padding:10px 12px;font-weight:700;display:inline-flex}.sidebar{z-index:10;border-bottom:0;border-right:1px solid #e5e7eb;width:min(86vw,340px);height:100dvh;max-height:none;padding:16px;transition:transform .24s cubic-bezier(.22,1,.36,1);position:fixed;top:0;bottom:0;left:0;right:auto;overflow-y:auto;transform:translate(-104%);box-shadow:24px 0 60px #0f172a2e}.desktop-sidebar{display:none}.course-drawer{animation:.24s cubic-bezier(.22,1,.36,1) both drawer-in;display:block;transform:translate(0)}.sidebar.open{transform:translate(0)}.brand{margin-bottom:12px}.progress-card{margin-bottom:12px;padding:12px}.sidebar nav{scroll-snap-type:none;grid-template-columns:1fr;gap:8px;margin:0;padding:0;display:grid;overflow:visible}.sidebar nav button{scroll-snap-align:none;min-width:0}nav button:hover:not(.locked){transform:none}.reset{margin-top:8px}.content{padding:16px 12px 28px}.module-hero{min-height:240px;margin-bottom:14px;padding:20px}.module-hero h1{font-size:clamp(30px,9vw,42px);line-height:1.04}.controls{grid-template-columns:1fr}.controls label{background:#fff;border:1px solid #eef0f4;border-radius:8px;grid-template-columns:1fr;gap:6px;padding:10px}.controls label span{justify-self:end;margin-top:-26px}.controls select{grid-column:1}.lab-header,.problem-head,.gate-panel,.resource-card{flex-direction:column;align-items:stretch}.chart-wrap{height:250px;margin:0 -6px}.scenario-row{grid-template-columns:42px minmax(0,1fr) 58px}.input-answer{grid-template-columns:1fr}.input-answer button{width:100%}.choices button{min-height:48px;padding:10px}.chapter-illustration{margin-bottom:14px}.fs-stage-track{grid-template-columns:repeat(2,minmax(0,1fr))}.statement-tabs{grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.statement-tabs button{justify-content:center}.fs-card-title{flex-direction:column;align-items:stretch}.fs-row{min-width:560px}.chapter-illustration img{min-height:190px}.concept-illustration{min-height:220px}.problem-grid{gap:10px}.practice-header,.formula-intuition,.worked-example{padding:16px}.sfm-accordion-trigger{align-items:flex-start;padding:14px}.sfm-accordion-content .lesson-section,.support-concept-card{padding:14px}.echarts-visual{min-height:280px}.timer-card{min-width:0}.timer-card strong{font-size:30px}.formula-card{padding:14px}.formula-token small{width:auto;position:fixed;bottom:18px;left:12px;right:12px}.numeric-answer{grid-template-columns:1fr}.numeric-answer input,.numeric-answer button{grid-area:auto/1;width:100%}}@media (max-width:420px){.site-brand strong{font-size:14px}.site-brand span,.brand-mark{width:34px;height:34px}.site-links a{text-align:center}.home-hero{min-height:540px}.course-path-panel{padding:18px}.course-path-copy h2{font-size:30px}.course-path-copy p{font-size:15px}.course-path-row{gap:16px;min-height:84px;padding:14px}.course-row-mark{height:52px}.course-path-row strong{font-size:21px}.home-hero h1{font-size:44px}.section-head h2{font-size:32px}.sidebar nav button{grid-template-columns:30px 1fr;padding:9px}.chapter-index{width:30px;height:30px}.lesson-copy h2,.problem-head h2{font-size:22px}.visual-lab{padding:12px}.tree-row{gap:8px;min-width:280px}.tree-row span{min-width:62px;padding:7px 8px}}body.dark-mode{color:#e5e7eb;background:#0f172a}::view-transition-old(root){mix-blend-mode:normal;animation-duration:.56s;animation-timing-function:cubic-bezier(.22,1,.36,1)}::view-transition-new(root){mix-blend-mode:normal;animation-duration:.56s;animation-timing-function:cubic-bezier(.22,1,.36,1)}::view-transition-old(root){animation-name:none}::view-transition-new(root){animation-name:theme-wipe-in}@keyframes theme-wipe-in{0%{clip-path:circle(0 at var(--theme-wipe-x,100%) var(--theme-wipe-y,0))}to{clip-path:circle(150vmax at var(--theme-wipe-x,100%) var(--theme-wipe-y,0))}}@media (prefers-reduced-motion:reduce){::view-transition-old(root){animation:none}::view-transition-new(root){animation:none}}body.dark-mode .site-home{background:radial-gradient(circle at 12% 18%,#1677ff2e,#0000 28%),radial-gradient(circle at 85% 10%,#52c41a1f,#0000 30%),linear-gradient(135deg,#0f172a 0%,#111827 52%,#172554 100%)}body.dark-mode .home-stats div,body.dark-mode .course-showcase-grid a,body.dark-mode .course-path-panel,body.dark-mode .course-path-row,body.dark-mode .site-footer,body.dark-mode .optimizer-content article{background:#111827;border-color:#263244;box-shadow:0 18px 46px #00000038}body.dark-mode .course-path-row:first-child{background:#0b2447}body.dark-mode .course-path-copy h2,body.dark-mode .course-path-row strong{color:#f8fafc}body.dark-mode .course-path-copy p{color:#aeb8c7}body.dark-mode .course-path-row em{background:#0f172a;border-color:#315f9c}body.dark-mode .site-nav,body.dark-mode .sidebar,body.dark-mode .course-mobile-bar,body.dark-mode .nav-menu-content,body.dark-mode .project-preview{color:#e5e7eb;background:#0f172aad;border-color:#263244}body.dark-mode .site-nav{border-bottom-color:#94a3b838;box-shadow:0 12px 34px #0000003d}body.dark-mode .content{background:#0f172a}body.dark-mode .site-links a,body.dark-mode .theme-toggle,body.dark-mode .mobile-theme-toggle,body.dark-mode .nav-menu-trigger,body.dark-mode .back-home,body.dark-mode .reset,body.dark-mode .footer-links a,body.dark-mode .optimizer-use-grid span,body.dark-mode .course-switcher a,body.dark-mode nav button,body.dark-mode .progress-card,body.dark-mode .lesson-section,body.dark-mode .problem-set,body.dark-mode .resource-card,body.dark-mode .chapter-illustration,body.dark-mode .mission-panel,body.dark-mode .case-study-panel,body.dark-mode .connection-map,body.dark-mode .revision-sheet,body.dark-mode .simulation-brief,body.dark-mode .formula-sheet-panel,body.dark-mode .worked-example-card,body.dark-mode .fs-lab,body.dark-mode .fs-stage-card,body.dark-mode .fs-statement-card,body.dark-mode .fs-insight-panel article,body.dark-mode .statement-tabs button,body.dark-mode .fs-controls select,body.dark-mode .visual-lab,body.dark-mode .sfm-accordion-item,body.dark-mode .sfm-accordion-trigger,body.dark-mode .sfm-accordion-content,body.dark-mode .support-concept-card,body.dark-mode .concept-illustration,body.dark-mode .formula-sheet-card,body.dark-mode .quiz,body.dark-mode .tree-panel,body.dark-mode .choices button,body.dark-mode .input-answer input,body.dark-mode .controls select,body.dark-mode .objective-list span,body.dark-mode .case-actions span,body.dark-mode .map-chain span,body.dark-mode .revision-grid article,body.dark-mode .worked-steps li,body.dark-mode .constraint-list span,body.dark-mode .simulation-inputs span,body.dark-mode .fs-stage-track span,body.dark-mode .fs-ratio-grid span{color:#e5e7eb;background:#111827;border-color:#263244}body.dark-mode .nav-menu-item{color:#e5e7eb}body.dark-mode .nav-menu-item[data-highlighted]{color:#dbeafe;background:#0b2447}body.dark-mode .course-switcher a:hover,body.dark-mode .course-switcher a.active,body.dark-mode nav button:hover:not(.locked),body.dark-mode nav button.active{color:#dbeafe;background:#0b2447;border-color:#315f9c}body.dark-mode nav button.locked{opacity:.68}body.dark-mode .chapter-index,body.dark-mode .choices button span{color:#0b2447;background:#dbeafe}body.dark-mode nav button.locked .chapter-index{color:#cbd5e1;background:#263244}body.dark-mode nav button:hover:not(.locked) .chapter-index,body.dark-mode nav button.active .chapter-index,body.dark-mode .choices button:hover span,body.dark-mode .choices button.chosen span{color:#08111f;background:#69b1ff}body.dark-mode .module-hero{background:linear-gradient(120deg,#030712eb,#172554d1),url(https://images.unsplash.com/photo-1642790106117-e829e14a795f?auto=format&fit=crop&w=1600&q=80)}body.dark-mode .home-hero{color:#f8fafc;background:#111827;border-color:#263244}body.dark-mode .hero-media{background:#0f172a}body.dark-mode .hero-media.ascii-hero,body.dark-mode .ascii-card{background:#fff}body.dark-mode .project-card{background:linear-gradient(#111827,#111827) padding-box padding-box,linear-gradient(135deg,#1677ff5c,#52c41a2e,#eb2f962e) border-box}body.dark-mode .project-icon,body.dark-mode .home-stats .material-symbols-rounded,body.dark-mode .course-showcase-grid .material-symbols-rounded,body.dark-mode .optimizer-content .material-symbols-rounded{color:#dbeafe;background:#0b2447}body.dark-mode .course-mobile-bar button .material-symbols-rounded{color:#e5e7eb}body.dark-mode .project-card h3,body.dark-mode .home-stats strong,body.dark-mode .site-footer h2,body.dark-mode .course-showcase-grid h3,body.dark-mode .optimizer-content h2,body.dark-mode .revision-grid strong,body.dark-mode .quiz-title,body.dark-mode .lesson-copy h2,body.dark-mode .problem-head h2,body.dark-mode .case-study-panel h2,body.dark-mode .connection-map h2,body.dark-mode .revision-sheet h2,body.dark-mode .mission-brief h2,body.dark-mode .concept-illustration h3,body.dark-mode .formula-sheet-head h2,body.dark-mode .formula-sheet-card h3,body.dark-mode .math-section-panel h2,body.dark-mode .worked-example-card h3,body.dark-mode .worked-steps strong,body.dark-mode .fs-lab-head h2,body.dark-mode .fs-stage-card strong,body.dark-mode .fs-card-title h3,body.dark-mode .fs-insight-panel h3,body.dark-mode .fs-ratio-grid b{color:#f8fafc}body.dark-mode .project-card p,body.dark-mode .project-preview p,body.dark-mode .project-preview small,body.dark-mode .section-head p,body.dark-mode .home-stats small,body.dark-mode .course-showcase-grid p,body.dark-mode .optimizer-content p,body.dark-mode .lesson-copy p,body.dark-mode .problem-head p,body.dark-mode .gate-panel p,body.dark-mode .chapter-illustration p,body.dark-mode .mission-brief p,body.dark-mode .case-study-panel p,body.dark-mode .connection-map p,body.dark-mode .revision-grid p,body.dark-mode .concept-illustration p,body.dark-mode .formula-sheet-head p,body.dark-mode .formula-sheet-card p,body.dark-mode .formula-sheet-card ul,body.dark-mode .revision-grid small,body.dark-mode .support-concept-card p,body.dark-mode .support-concept-card small,body.dark-mode .worked-example-card p,body.dark-mode .worked-steps span,body.dark-mode .fs-lab-head p,body.dark-mode .fs-stage-card span,body.dark-mode .fs-insight-panel p,body.dark-mode .valuation-readout,body.dark-mode .brand span,body.dark-mode .progress-card small,body.dark-mode nav small,body.dark-mode .course-switcher span{color:#aeb8c7}body.dark-mode .eli5{background:#102716;border-left-color:#52c41a}body.dark-mode .eli5 strong{color:#95de64}body.dark-mode .reward-card,body.dark-mode .metric,body.dark-mode .gate-panel,body.dark-mode .decision-prompt,body.dark-mode .why-matters,body.dark-mode .unlock-panel{background:#0b2447;border-color:#315f9c}body.dark-mode .why-matters strong{color:#ffd666}body.dark-mode .formula-display{color:#69b1ff;background:#111827;border-color:#315f9c}body.dark-mode .fs-lab{background:radial-gradient(circle at 8% 10%,#1677ff29,#0000 28%),#0f172a}body.dark-mode .fs-card-title,body.dark-mode .fs-row{border-color:#263244}body.dark-mode .fs-row-head,body.dark-mode button.fs-row:hover,body.dark-mode .fs-row strong.active-year,body.dark-mode .fs-card-title>span,body.dark-mode .fs-stage-track span.active{color:#dbeafe;background:#0b2447;border-color:#315f9c}body.dark-mode .fs-stage-track span.available,body.dark-mode .fs-ratio-grid .tone-good{color:#95de64;background:#102716;border-color:#2f6b22}body.dark-mode .fs-stage-track span.available small{color:#102716;background:#52c41a}body.dark-mode .fs-stage-track small{color:#aeb8c7;background:#263244}body.dark-mode .statement-tabs button.active,body.dark-mode .fs-stage-track span.active small{color:#fff;background:#1677ff;border-color:#69b1ff}body.dark-mode .fs-ratio-grid .tone-watch,body.dark-mode .audit-pill{color:#ffd591;background:#2f1d05;border-color:#7c4a03}body.dark-mode .fs-ratio-grid .tone-risk{color:#ffa39e;background:#2a1215;border-color:#7f1d1d}body.dark-mode .valuation-readout strong{color:#95de64}body.dark-mode .sfm-accordion-trigger small{color:#69b1ff}body.dark-mode .sfm-accordion-trigger:hover,body.dark-mode .sfm-accordion-trigger[data-state=open]{color:#dbeafe;background:#0b2447}body.dark-mode .sfm-accordion-content{border-top-color:#263244}body.dark-mode .unlock-panel label{color:#e5e7eb}body.dark-mode .unlock-panel input{color:#e5e7eb;background:#111827;border-color:#315f9c}body.dark-mode .score-pill{background:#2f1d05;border-color:#7c4a03}body.dark-mode .score-pill.passed,body.dark-mode .feedback.good{color:#95de64;background:#102716;border-color:#2f6b22}body.dark-mode .feedback{color:#ffd591;background:#2f1d05}body.dark-mode .unlock-celebration{color:#d9f7be;background:#102716f5;border-color:#2f6b22;box-shadow:0 22px 60px #0000005c}body.dark-mode .unlock-celebration small{color:#95de64}body.dark-mode .choices button.chosen,body.dark-mode .choices button.correct{background:#102716}body.dark-mode .choices button.correct span{color:#102716;background:#95de64}body.dark-mode .choices button.wrong{background:#2a1215}body.dark-mode .choices button.wrong span{color:#2a1215;background:#ff7875}body.dark-mode .scenario-track,body.dark-mode .progress-bar{background:#263244}body.dark-mode .fsav-chart-frame,body.dark-mode .fsav-bar-board,body.dark-mode .fsav-matrix,body.dark-mode .fsav-flow{box-shadow:none;background:linear-gradient(#123054c7,#0a182eeb);border-color:#7aa2f738}body.dark-mode .fsav-bar-row div,body.dark-mode .fsav-bar-row span,body.dark-mode .fs-question-panel li{color:#aeb8c7}body.dark-mode .fsav-bar-row strong,body.dark-mode .fsav-flow strong,body.dark-mode .fsav-matrix-row span{color:#f8fafc}body.dark-mode .fsav-bar-row i,body.dark-mode .fsav-matrix-row span{background:#94a3b829}body.dark-mode .fsav-flow div,body.dark-mode .fsav-matrix-head strong,body.dark-mode .fsav-matrix-row strong{color:#dbeafe;background:#0f172abd;border-color:#94a3b829}body.dark-mode .calculation-notebook,body.dark-mode .grouped-practice-card,body.dark-mode .course-content-slot{background:#111827;border-color:#315f9c #315f9c #315f9c #4096ff}body.dark-mode .calculation-notebook:before{background:#1e3a5f}body.dark-mode .worked-steps code,body.dark-mode .grouped-practice-card>header>strong{color:#91caff;background:#0f1d33;border-color:#315f9c}body.dark-mode .grouped-practice-card>header,body.dark-mode .grouped-part{border-color:#263244}body.dark-mode .grouped-practice-card h3,body.dark-mode .grouped-part .quiz-title,body.dark-mode .course-content-slot h2{color:#f8fafc}body.dark-mode .grouped-practice-card>header p,body.dark-mode .course-content-slot p,body.dark-mode .part-meta{color:#aeb8c7}body.dark-mode .grouped-part .quiz{background:0 0}body.dark-mode .slot-mark{color:#69b1ff;background:#0b2447}body.dark-mode .case-table-wrap{background:#111827;border-color:#334155}body.dark-mode .case-table thead th{color:#cbd5e1;background:#172033}body.dark-mode .case-table th,body.dark-mode .case-table td{border-color:#334155}body.dark-mode .case-prompt{color:#e5e7eb}body.dark-mode .case-answer input{color:#f8fafc;background:#0f172a;border-color:#475569}body.dark-mode .case-pending{color:#94a3b8}@media (max-width:720px){.grouped-practice-card>header{flex-direction:column;align-items:stretch}.grouped-practice-card>header>strong{align-self:flex-start}.grouped-part{grid-template-columns:34px minmax(0,1fr);gap:10px;padding:16px 14px}.part-label{width:32px;height:32px}.calculation-notebook:before{left:28px}.worked-steps li{grid-template-columns:28px minmax(0,1fr)}.worked-steps code,.worked-steps span{font-size:13px}.course-content-slot{grid-template-columns:1fr}}
