/* Unified educational styling for legacy theory/task pages. v34 */
:root{color-scheme:light dark;--lu-bg:#f5fbff;--lu-card:#fff;--lu-text:#172033;--lu-muted:#5f6b7a;--lu-line:#dbe7f3;--lu-primary:#1f66d1;--lu-soft:#edf6ff}
@media(prefers-color-scheme:dark){:root{--lu-bg:#111827;--lu-card:#182235;--lu-text:#eef5ff;--lu-muted:#a9b8c8;--lu-line:#2c3b51;--lu-primary:#79b4ff;--lu-soft:#172b43}}
html{scroll-behavior:smooth}body.learning-unified{margin:0!important;padding:0!important;display:block!important;min-height:100vh;background:var(--lu-bg)!important;color:var(--lu-text)!important;font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif!important;line-height:1.62;text-align:left!important}
.learning-site-header{position:relative;z-index:20;background:color-mix(in srgb,var(--lu-card) 94%,transparent);border-bottom:1px solid var(--lu-line);box-shadow:0 5px 22px rgba(15,23,42,.04)}
.learning-header-inner{width:min(1180px,calc(100% - 34px));min-height:74px;margin:auto;display:flex;align-items:center;gap:20px;justify-content:space-between}
.learning-brand{display:flex;flex-direction:column;text-decoration:none!important;color:var(--lu-text)!important;font-weight:850;line-height:1.05;font-size:1rem}.learning-brand small{margin-top:5px;font-size:.72rem;color:var(--lu-muted);font-weight:650;letter-spacing:.045em}
.learning-nav{display:flex;align-items:center;justify-content:flex-end;gap:9px;flex-wrap:wrap}.learning-nav a{display:inline-flex;align-items:center;min-height:38px;padding:7px 11px;border-radius:12px;text-decoration:none!important;color:var(--lu-text)!important;font-size:.9rem;font-weight:700}.learning-nav a:hover{background:var(--lu-soft)}.learning-nav .learning-home-button{border:1px solid color-mix(in srgb,var(--lu-primary) 35%,var(--lu-line));background:color-mix(in srgb,var(--lu-primary) 9%,transparent);color:var(--lu-primary)!important}
.learning-content{box-sizing:border-box;width:min(1080px,calc(100% - 34px));margin:30px auto 56px!important;padding:clamp(22px,4vw,44px)!important;background:var(--lu-card)!important;border:1px solid var(--lu-line)!important;border-radius:24px!important;box-shadow:0 14px 42px rgba(15,23,42,.07)!important;display:block!important;min-height:200px;text-align:left!important}
.learning-content h1,.learning-content h2,.learning-content h3{font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif!important;color:var(--lu-text)!important;line-height:1.18!important;text-wrap:balance}.learning-content h1{font-size:clamp(1.75rem,4vw,2.55rem)!important;margin:.1em 0 .7em!important}.learning-content h2{font-size:clamp(1.3rem,2.6vw,1.72rem)!important;margin:1.6em 0 .55em!important}.learning-content h3{font-size:1.13rem!important}
.learning-content p,.learning-content li,.learning-content td,.learning-content th{color:var(--lu-text)!important;font-family:inherit!important;font-size:clamp(.97rem,1.3vw,1.04rem);line-height:1.65}.learning-content p{margin:.72em 0!important}.learning-content li{margin:.32em 0}.learning-content a{color:var(--lu-primary)!important}.learning-content img{max-width:100%!important;height:auto!important}.learning-content table{max-width:100%;border-collapse:collapse;margin:20px auto!important;background:var(--lu-card)!important}.learning-content th,.learning-content td{border:1px solid var(--lu-line)!important;padding:9px 11px!important;background:transparent!important}.learning-content th{background:var(--lu-soft)!important;font-weight:800}.learning-content input,.learning-content select,.learning-content textarea,.learning-content button{font:inherit}.learning-content button,.learning-content input[type=button],.learning-content input[type=submit]{border:1px solid var(--lu-line);border-radius:12px;padding:9px 13px}.learning-content hr{border:0;border-top:1px solid var(--lu-line);margin:24px 0}.learning-content footer{margin:34px -12px -12px;padding:18px 12px 0;border-top:1px solid var(--lu-line);background:transparent!important;color:var(--lu-muted)!important}
@media(max-width:760px){.learning-header-inner{min-height:68px;align-items:flex-start;flex-direction:column;padding:13px 0;gap:10px}.learning-nav{justify-content:flex-start}.learning-content{width:min(100% - 20px,1080px);margin-top:18px!important;padding:20px 16px!important;border-radius:18px!important;overflow-x:auto}}