@font-face{font-family:Geist;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/fef07dbb0973bf53-s.3p2_lha1f2xer.woff2)format("woff2");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Geist;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/8a480f0b521d4e75-s.1qq4vpdcun5oj.woff2)format("woff2");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Geist;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/53b9e256198e5412-s.390ncx5urfkfu.woff2)format("woff2");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Geist;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/7178b3e590c64307-s.21jp631_3pja2.woff2)format("woff2");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Geist;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/caa3a2e1cccd8315-s.p.0wgildi0cnwt9.woff2)format("woff2");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Geist Fallback;src:local(Arial);ascent-override:95.94%;descent-override:28.16%;line-gap-override:0.0%;size-adjust:104.76%}.geist_a71539c9-module__T19VSG__className{font-family:Geist,Geist Fallback;font-style:normal}.geist_a71539c9-module__T19VSG__variable{--font-geist-sans:"Geist", "Geist Fallback"}
@font-face{font-family:Geist Mono;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/5ce348bf30bf5439-s.31988l_ccedte.woff2)format("woff2");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Geist Mono;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/4fa387ec64143e14-s.2tuy5pz7dlieh.woff2)format("woff2");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Geist Mono;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/6306c77e7c8268e4-s.2dbetqa9o8jxf.woff2)format("woff2");unicode-range:U+2000-2001,U+2004-2008,U+200A,U+23B8-23BD,U+2500-259F}@font-face{font-family:Geist Mono;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/7d817b4c03b0c5f1-s.1uyisp29ctx0d.woff2)format("woff2");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Geist Mono;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/bbc41e54d2fcbd21-s.1rgnod-3esatf.woff2)format("woff2");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Geist Mono;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/797e433ab948586e-s.p.0r6juujl39pe6.woff2)format("woff2");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Geist Mono Fallback;src:local(Arial);ascent-override:74.67%;descent-override:21.92%;line-gap-override:0.0%;size-adjust:134.59%}.geist_mono_8d43a2aa-module__8Li5zG__className{font-family:Geist Mono,Geist Mono Fallback;font-style:normal}.geist_mono_8d43a2aa-module__8Li5zG__variable{--font-geist-mono:"Geist Mono", "Geist Mono Fallback"}
:root{--primary:#2563eb;--primary-hover:#1d4ed8;--primary-light:#eff6ff;--accent:#6d5ae0;--accent-light:#f1efff;--background:#f7f8fa;--surface:#fff;--surface-muted:#f1f3f7;--surface-hover:#eef2f7;--foreground:#0b1220;--foreground-muted:#5b6472;--foreground-subtle:#8b93a1;--border:#e6e9ee;--border-strong:#d3d8e0;--success:#16a34a;--success-light:#ecfdf3;--danger:#dc2626;--danger-light:#fef2f2;--warning:#b45309;--warning-light:#fffbeb;--sidebar-width:240px;--header-height:64px;--bottom-nav-height:64px;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:20px;--radius-full:9999px;--shadow-sm:0 1px 2px #1018280a;--shadow-md:0 2px 8px #1018280f;--shadow-lg:0 8px 24px #10182814}html{height:100%}html,body{max-width:100vw;overflow-x:hidden}body{min-height:100%;color:var(--foreground);background:var(--background);font-family:var(--font-geist-sans), Arial, Helvetica, sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;flex-direction:column;display:flex}*{box-sizing:border-box;margin:0;padding:0}a{color:inherit;text-decoration:none}button,input,textarea,select{font-family:inherit}:focus-visible{outline:2px solid var(--primary);outline-offset:2px}.page-container{box-sizing:border-box;width:100%;min-width:0;max-width:100%;margin:0 auto;padding:20px 16px 96px}@media (min-width:768px){.page-container{max-width:1200px;padding:32px 24px}}@media (min-width:1024px){.page-container{max-width:1280px;padding:40px 32px}}.grid-2-col-sidebar{grid-template-columns:1fr;gap:24px;display:grid}@media (min-width:1024px){.grid-2-col-sidebar{grid-template-columns:minmax(0,1fr) 320px;align-items:start;gap:32px}}.dashboard-lower-grid{grid-template-columns:1fr;gap:24px;display:grid}@media (min-width:1024px){.dashboard-lower-grid{grid-template-columns:minmax(0,2fr) minmax(280px,1fr);align-items:start;gap:32px}}.dashboard-stats-grid{grid-template-columns:1fr;gap:16px;display:grid}@media (min-width:768px){.dashboard-stats-grid{grid-template-columns:repeat(2,1fr)}}@media (min-width:1024px){.dashboard-stats-grid{grid-template-columns:repeat(4,1fr)}}.text-wrap-safe{overflow-wrap:anywhere;word-break:normal;max-width:100%}@keyframes slideUp{0%{transform:translateY(100%)}to{transform:translateY(0)}}@media (max-width:1023px){body{padding-bottom:var(--bottom-nav-height)}}@media (min-width:1024px){body{padding-top:var(--header-height)}body.has-sidebar{padding-left:var(--sidebar-width)}}.page-header{align-items:flex-start;gap:12px;min-width:0;display:flex}.page-header-content{min-width:0}.page-header h1{overflow-wrap:anywhere;letter-spacing:-.02em;min-width:0;color:var(--foreground);margin:0 0 8px;font-size:24px;font-weight:700;line-height:1.25}@media (min-width:768px){.page-header h1{font-size:28px}}.page-header h2{overflow-wrap:anywhere;min-width:0;margin:0 0 6px}.page-title{letter-spacing:-.02em;color:var(--foreground);margin:0;font-size:24px;font-weight:700;line-height:1.25}@media (min-width:768px){.page-title{font-size:28px}}.legal-content{color:var(--foreground);font-size:15px;line-height:1.7}.legal-content h2{color:var(--foreground);margin:28px 0 12px;font-size:18px;font-weight:700}.legal-content h3{color:var(--foreground);margin:20px 0 10px;font-size:16px;font-weight:600}.legal-content p{margin:0 0 14px}.legal-content ul{margin:0 0 16px;padding-left:22px}.legal-content li{margin:0 0 8px}.legal-content a{color:var(--primary);text-decoration:underline}.legal-content .legal-lead{color:var(--foreground-muted);margin-bottom:24px;font-size:15px}.site-footer{text-align:center;color:var(--foreground-muted);margin-top:auto;padding:24px 16px 40px;font-size:13px}.site-footer nav{flex-wrap:wrap;justify-content:center;gap:8px 20px;margin-bottom:8px;display:flex}.site-footer a{color:var(--foreground-muted);font-weight:500;text-decoration:none}.site-footer a:hover{color:var(--primary)}.skeleton{background:var(--border);animation:1.5s ease-in-out infinite skeleton-pulse;display:block}@keyframes skeleton-pulse{0%,to{opacity:1}50%{opacity:.45}}.skill-pill{border-radius:var(--radius-full);background:var(--surface-hover);color:var(--foreground);cursor:pointer;white-space:nowrap;border:1px solid #0000;align-items:center;padding:4px 10px;font-size:12px;font-weight:600;transition:background .15s,color .15s,border-color .15s;display:inline-flex}.skill-pill:hover,.skill-pill--primary{background:var(--primary-light);color:var(--primary)}.skill-pill--primary:hover{background:var(--primary);color:#fff}.card{background:var(--surface);border-radius:var(--radius-lg);border:1px solid var(--border);box-shadow:var(--shadow-sm)}.hover-card{transition:transform .15s,box-shadow .15s,border-color .15s}@media (hover:hover){.hover-card:hover{box-shadow:var(--shadow-md);border-color:var(--border-strong);transform:translateY(-2px)}}.btn{border-radius:var(--radius-md);cursor:pointer;white-space:nowrap;border:1px solid #0000;justify-content:center;align-items:center;gap:8px;font-size:14px;font-weight:600;line-height:1;text-decoration:none;transition:background .15s,color .15s,border-color .15s,box-shadow .15s,transform 50ms;display:inline-flex}.btn:active{transform:translateY(1px)}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.btn--primary{background:var(--primary);color:#fff}.btn--primary:hover:not(:disabled){background:var(--primary-hover)}.btn--secondary{background:var(--surface-muted);color:var(--foreground)}.btn--secondary:hover:not(:disabled){background:var(--surface-hover)}.btn--outline{background:var(--surface);border-color:var(--border-strong);color:var(--foreground)}.btn--outline:hover:not(:disabled){border-color:var(--primary);color:var(--primary)}.btn--ghost{color:var(--foreground-muted);background:0 0}.btn--ghost:hover:not(:disabled){background:var(--surface-hover);color:var(--foreground)}.btn--sm{padding:7px 12px;font-size:13px}.btn--md{padding:10px 16px}.btn--lg{padding:12px 22px;font-size:16px}.btn--block{width:100%}.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}.truncate{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.section-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;display:flex}.section-header__title{color:var(--foreground);letter-spacing:-.01em;font-size:20px;font-weight:700}.section-header__subtitle{color:var(--foreground-muted);margin-top:2px;font-size:14px}.admin-root{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--background:#0b1220;--surface:#111a2e;--surface-muted:#16213a;--surface-hover:#1c2a47;--foreground:#e7ecf5;--foreground-muted:#9aa7bd;--foreground-subtle:#6b7a95;--border:#1f2b45;--border-strong:#2c3a58;--primary:#3b82f6;--primary-hover:#60a5fa;--primary-light:#3b82f629;--accent:#8b7cf6;--accent-light:#8b7cf629;--success:#34d399;--success-light:#34d39924;--danger:#f87171;--danger-light:#f8717124;--warning:#fbbf24;--warning-light:#fbbf2424;--shadow-sm:0 1px 2px #0000004d;--shadow-md:0 4px 16px #00000059;--shadow-lg:0 12px 32px #00000073}.admin-root ::-webkit-scrollbar{width:10px;height:10px}.admin-root ::-webkit-scrollbar-thumb{background:#2c3a58 padding-box content-box;border:2px solid #0000;border-radius:9999px}.admin-root ::-webkit-scrollbar-track{background:0 0}.admin-root .admin-table tbody tr{transition:background .12s}.admin-root .admin-table tbody tr:hover{background:var(--surface-hover)}.admin-root .admin-table tbody tr:last-child td{border-bottom:none}.admin-root ::placeholder{color:var(--foreground-subtle)}.admin-root select option{background:var(--surface);color:var(--foreground)}
.learn-root{background:var(--background);min-height:100vh}.learn-mobile-bar{display:none}.learn-grid{grid-template-columns:280px minmax(0,1fr) 320px;gap:0;max-width:1440px;margin:0 auto;display:grid}.learn-nav{background:var(--surface);border-right:1px solid var(--border);height:100vh;min-height:100vh;position:sticky;top:0;overflow-y:auto}.learn-nav-inner{flex-direction:column;height:100%;display:flex}.learn-nav-head{border-bottom:1px solid var(--border);padding:20px 20px 16px}.learn-nav-list{flex:1;padding:12px 10px 40px;overflow-y:auto}.learn-stage{cursor:pointer;width:100%;color:var(--foreground);text-align:left;background:0 0;border:none;border-radius:8px;align-items:center;gap:10px;padding:9px 10px;font-size:13px;font-weight:700;display:flex}.learn-stage:hover{background:var(--surface-hover)}.learn-stage-num{background:var(--primary-light);min-width:22px;height:22px;color:var(--primary);border-radius:6px;flex-shrink:0;justify-content:center;align-items:center;font-size:11px;font-weight:700;display:inline-flex}.learn-stage-name{flex:1}.learn-stage-count{color:var(--foreground-muted);flex-shrink:0;font-size:11px;font-weight:600}.learn-stage-items{margin:2px 0 8px}.learn-node{color:var(--foreground-muted);border-radius:8px;align-items:center;gap:10px;padding:7px 12px 7px 26px;font-size:13px;text-decoration:none;display:flex}.learn-node:hover{background:var(--surface-hover);color:var(--foreground)}.learn-node--current{background:var(--primary-light);color:var(--foreground);font-weight:600}.learn-main{min-width:0;padding:24px 32px 80px}.learn-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);min-width:0;padding:24px 28px 32px}.learn-breadcrumb{color:var(--foreground-subtle);flex-wrap:wrap;align-items:center;gap:6px;margin-bottom:20px;font-size:13px;display:flex}.learn-bc-link{color:var(--primary);font-weight:500}.learn-bc-current{color:var(--foreground-muted);font-weight:600}.learn-header{border-bottom:1px solid var(--border);align-items:flex-start;gap:16px;margin-bottom:20px;padding-bottom:24px;display:flex}.learn-header-icon{background:var(--primary-light);width:56px;height:56px;color:var(--primary);border-radius:14px;flex-shrink:0;justify-content:center;align-items:center;display:flex}.learn-header-body{flex:1;min-width:0}.learn-header h1{color:var(--foreground);margin:0 0 6px;font-size:22px;font-weight:800}.learn-header p{color:var(--foreground-muted);margin:0 0 16px;font-size:14px;line-height:1.6}.learn-progress-label{color:var(--foreground);justify-content:space-between;margin-bottom:6px;font-size:13px;font-weight:600;display:flex}.learn-progress-track{background:var(--border);border-radius:999px;height:8px;overflow:hidden}.learn-progress-fill{background:var(--primary);height:100%;transition:width .3s}.learn-view-roadmap{border:1px solid var(--border-strong);color:var(--foreground);background:var(--surface);border-radius:10px;flex-shrink:0;padding:8px 14px;font-size:13px;font-weight:600;text-decoration:none}.learn-tabs{border-bottom:1px solid var(--border);gap:2px;margin-bottom:24px;display:flex;overflow-x:auto}.learn-tab{color:var(--foreground-muted);cursor:pointer;white-space:nowrap;background:0 0;border:none;border-bottom:2px solid #0000;align-items:center;gap:7px;padding:10px 14px;font-size:14px;font-weight:600;display:inline-flex}.learn-tab:hover{color:var(--foreground)}.learn-tab--active{color:var(--primary);border-bottom-color:var(--primary)}.learn-content{min-width:0;max-width:720px}.learn-title{color:var(--foreground);margin:0 0 16px;font-size:26px;font-weight:800}.learn-lesson{color:var(--foreground-muted);white-space:pre-wrap;margin:0 0 20px;font-size:15px;line-height:1.7}.learn-section{margin-bottom:24px}.learn-section h3{color:var(--foreground);margin:0 0 12px;font-size:16px;font-weight:700}.learn-topics{flex-wrap:wrap;gap:8px;display:flex}.learn-topic-chip{background:var(--surface-hover);color:var(--foreground);border:1px solid var(--border);border-radius:999px;padding:6px 12px;font-size:13px}.learn-key-takeaways{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:20px 24px}.learn-key-takeaways ul{margin:0;padding-left:20px}.learn-key-takeaways li{color:var(--foreground-muted);margin-bottom:8px;font-size:14px;line-height:1.7}.learn-resource-card{background:var(--surface);border:1px solid var(--border);border-radius:14px;gap:16px;padding:20px;display:flex}.learn-resource-icon{background:var(--primary-light);width:44px;height:44px;color:var(--primary);border-radius:10px;flex-shrink:0;justify-content:center;align-items:center;display:flex}.learn-resource-icon--video{background:var(--danger-light);color:var(--danger)}.learn-resource-body{min-width:0}.learn-resource-title{color:var(--foreground);font-size:16px;font-weight:700}.learn-resource-meta{color:var(--foreground-muted);margin:2px 0 10px;font-size:13px}.learn-resource-desc{color:var(--foreground-muted);margin:0 0 12px;font-size:14px;line-height:1.6}.learn-resource-link{color:var(--primary);font-size:14px;font-weight:600;text-decoration:none}.learn-resource-link--video{color:var(--danger)}.learn-outline-btn{border:1px solid var(--border-strong);background:var(--surface);color:var(--foreground);border-radius:10px;align-items:center;gap:8px;margin-top:8px;padding:10px 16px;font-size:14px;font-weight:600;text-decoration:none;display:inline-flex}.learn-prevnext{border-top:1px solid var(--border);justify-content:space-between;gap:16px;margin-top:32px;padding-top:20px;display:flex}.learn-prevnext-card{border:1px solid var(--border);background:var(--surface);border-radius:12px;flex-direction:column;gap:4px;max-width:46%;padding:14px 18px;text-decoration:none;display:flex}.learn-prevnext-card--next{text-align:right;margin-left:auto}.learn-prevnext-dir{color:var(--foreground-subtle);font-size:12px;font-weight:600}.learn-prevnext-title{color:var(--primary);font-size:14px;font-weight:600}.learn-complete{margin-top:24px}.learn-aside{border-left:1px solid var(--border);background:var(--background);padding:24px 20px 80px}.learn-aside-card{background:var(--surface);border:1px solid var(--border);border-radius:14px;margin-bottom:16px;padding:18px}.learn-aside-head{text-transform:uppercase;letter-spacing:.04em;color:var(--foreground-muted);justify-content:space-between;align-items:center;margin-bottom:10px;font-size:12px;font-weight:700;display:flex}.learn-aside-free{color:var(--success);background:var(--success-light);border-radius:999px;padding:2px 8px;font-size:11px;font-weight:700}.learn-aside-title{color:var(--foreground);margin-bottom:4px;font-size:14px;font-weight:700}.learn-aside-meta{color:var(--foreground-muted);margin-bottom:10px;font-size:12px}.learn-aside-desc{color:var(--foreground-muted);margin:0 0 12px;font-size:13px;line-height:1.5}.learn-aside-btn{background:var(--primary);color:#fff;cursor:pointer;border:none;border-radius:8px;align-items:center;gap:6px;padding:8px 14px;font-size:13px;font-weight:600;text-decoration:none;display:inline-flex}.learn-aside-btn--video{background:var(--danger)}.lesson-blocks{flex-direction:column;gap:24px;min-width:0;display:flex}.lesson-block{border-bottom:1px solid var(--border);min-width:0;padding-bottom:24px}.lesson-block:last-child{border-bottom:none;padding-bottom:0}.lesson-block-heading{color:var(--foreground);text-transform:uppercase;letter-spacing:.03em;margin:0 0 12px;font-size:15px;font-weight:700}.lesson-block-text{color:var(--foreground-muted);white-space:pre-wrap;margin:0;font-size:15px;line-height:1.7}.lesson-block-note{color:var(--foreground-subtle);margin:10px 0 0;font-size:13px}.lesson-example{margin-bottom:16px}.lesson-example:last-child{margin-bottom:0}.lesson-example-title{color:var(--foreground);margin-bottom:6px;font-size:14px;font-weight:700}.lesson-example .lesson-block-text{margin-bottom:10px}.lesson-example-output{background:#0b1220;border:1px solid #1f2a44;border-radius:10px;margin-top:10px;padding:10px 14px}.lesson-example-output-label{text-transform:uppercase;letter-spacing:.04em;color:#6b7a95;margin-bottom:6px;font-size:11px;font-weight:700}.lesson-example-output pre{color:#e7ecf5;white-space:pre-wrap;margin:0;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13px;line-height:1.6}.lesson-hints{background:var(--surface);border:1px solid var(--border);border-radius:12px;margin-top:14px;padding:14px 16px}.lesson-hints-title{color:var(--foreground);align-items:center;gap:6px;margin-bottom:8px;font-size:13px;font-weight:700;display:flex}.lesson-hints ul{margin:0;padding-left:18px}.lesson-hints li{color:var(--foreground-muted);margin-bottom:4px;font-size:13px;line-height:1.6}.lesson-block--takeaways{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:20px 24px}.lesson-takeaways{margin:0;padding-left:20px}.lesson-takeaways li{color:var(--foreground-muted);margin-bottom:8px;font-size:14px;line-height:1.7}.lesson-quiz-item{margin-bottom:20px}.lesson-quiz-item:last-child{margin-bottom:0}.lesson-quiz-question{color:var(--foreground);gap:10px;margin-bottom:10px;font-size:15px;font-weight:600;display:flex}.lesson-quiz-num{background:var(--surface-hover);width:22px;height:22px;color:var(--primary);border-radius:6px;flex-shrink:0;justify-content:center;align-items:center;font-size:12px;font-weight:700;display:inline-flex}.lesson-quiz-options{flex-direction:column;gap:8px;display:flex}.lesson-quiz-option{text-align:left;border:1px solid var(--border);background:var(--surface);color:var(--foreground);cursor:pointer;border-radius:10px;align-items:center;gap:10px;padding:10px 14px;font-size:14px;display:flex}.lesson-quiz-option:hover{border-color:var(--border-strong)}.lesson-quiz-option--correct{border-color:var(--success);color:var(--success)}.lesson-quiz-option--wrong{border-color:var(--danger);color:var(--danger)}.lesson-quiz-radio{border:2px solid var(--border-strong);border-radius:50%;flex-shrink:0;width:14px;height:14px}.lesson-quiz-explain{color:var(--foreground-muted);background:var(--surface);border-left:3px solid var(--primary);border-radius:0 10px 10px 0;margin-top:10px;padding:10px 14px;font-size:13px;line-height:1.6}.lesson-note{border:1px solid var(--border);border-left-width:4px;border-radius:12px;gap:12px;padding:14px 16px;display:flex}.lesson-note--info{background:#3b82f614;border-left-color:#3b82f6}.lesson-note--tip{background:#10b98114;border-left-color:#10b981}.lesson-note--warning{background:#f59e0b14;border-left-color:#f59e0b}.lesson-note-icon{flex-shrink:0;margin-top:2px}.lesson-note--info .lesson-note-icon{color:#3b82f6}.lesson-note--tip .lesson-note-icon{color:#10b981}.lesson-note--warning .lesson-note-icon{color:#f59e0b}.lesson-note-title{color:var(--foreground);margin-bottom:4px;font-size:14px;font-weight:700}.lesson-note-text{color:var(--foreground-muted);margin:0;font-size:14px;line-height:1.6}.lesson-section{flex-direction:column;gap:14px;min-width:0;display:flex}.lesson-subheading{color:var(--foreground);margin:8px 0 0;font-size:15px;font-weight:700}.lesson-list{flex-direction:column;gap:6px;margin:0;padding-left:22px;display:flex}.lesson-list li{color:var(--foreground-muted);font-size:14px;line-height:1.6}.lesson-list--steps{list-style:decimal}.lesson-table-wrap{border:1px solid var(--border);border-radius:12px;min-width:0;margin:4px 0;overflow-x:auto}.lesson-table{border-collapse:collapse;width:100%;min-width:420px;font-size:13px}.lesson-table th,.lesson-table td{text-align:left;border-bottom:1px solid var(--border);vertical-align:top;padding:10px 12px}.lesson-table th{background:var(--surface-muted);color:var(--foreground);font-weight:700}.lesson-table td{color:var(--foreground-muted);line-height:1.5}.lesson-table tr:last-child th,.lesson-table tr:last-child td{border-bottom:none}.lesson-flow{flex-direction:column;align-items:stretch;gap:0;margin:4px 0;display:flex}.lesson-flow-step{flex-direction:column;align-items:center;display:flex}.lesson-flow-box{text-align:center;background:var(--surface);border:1px solid var(--border);width:100%;color:var(--foreground);border-radius:10px;padding:12px 14px;font-size:14px;font-weight:600}.lesson-flow-arrow{color:var(--primary);padding:4px 0;font-size:18px;line-height:1}.lesson-layers{flex-direction:column;gap:6px;margin:4px 0;display:flex}.lesson-layer{background:var(--surface);border:1px solid var(--border);width:100%;color:var(--foreground);border-radius:10px;padding:12px 14px;font-size:14px;font-weight:600}.lesson-callout{border:1px solid var(--border);border-left-width:4px;border-radius:10px;gap:10px;padding:12px 14px;display:flex}.lesson-callout--info{background:#3b82f614;border-left-color:#3b82f6}.lesson-callout--tip{background:#10b98114;border-left-color:#10b981}.lesson-callout--warning{background:#f59e0b14;border-left-color:#f59e0b}.lesson-callout-icon{flex-shrink:0;margin-top:2px}.lesson-callout--info .lesson-callout-icon{color:#3b82f6}.lesson-callout--tip .lesson-callout-icon{color:#10b981}.lesson-callout--warning .lesson-callout-icon{color:#f59e0b}.lesson-callout-text{color:var(--foreground-muted);margin:0;font-size:14px;line-height:1.6}.playground{background:#0b1220;border:1px solid #1f2a44;border-radius:12px;min-width:0;max-width:100%;margin-top:14px;overflow:hidden}.pg-toolbar{background:#111a2e;border-bottom:1px solid #1f2a44;justify-content:space-between;align-items:center;padding:8px 12px;display:flex}.pg-lang{text-transform:uppercase;letter-spacing:.04em;color:#7dd3fc;align-items:center;gap:6px;font-size:11px;font-weight:700;display:inline-flex}.pg-actions{gap:8px;display:flex}.pg-btn{color:#cbd5e1;cursor:pointer;background:#16203a;border:1px solid #2a3852;border-radius:8px;align-items:center;gap:6px;padding:6px 12px;font-size:12px;font-weight:600;display:inline-flex}.pg-btn:disabled{opacity:.6;cursor:not-allowed}.pg-btn--run{color:#fff;background:#3b82f6;border-color:#3b82f6}.pg-editor{color:#e7ecf5;resize:vertical;background:#0b1220;border:none;outline:none;width:100%;min-height:180px;padding:14px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13px;line-height:1.7;display:block}.pg-running{color:#9aa7bd;border-top:1px solid #1f2a44;align-items:center;gap:6px;padding:8px 12px;font-size:12px;display:flex}.pg-spin{animation:.9s linear infinite pg-spin}@keyframes pg-spin{to{transform:rotate(360deg)}}.pg-output,.pg-error{border-top:1px solid #1f2a44}.pg-panel-head{text-transform:uppercase;letter-spacing:.04em;color:#6b7a95;align-items:center;gap:6px;padding:8px 12px;font-size:11px;font-weight:700;display:flex}.pg-time{color:#7dd3fc;text-transform:none;letter-spacing:0;margin-left:auto}.pg-output-text,.pg-error-text{color:#e7ecf5;white-space:pre-wrap;word-break:break-word;margin:0;padding:0 14px 14px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13px;line-height:1.7}.pg-error{background:#ef44440f}.pg-error .pg-panel-head{color:#f87171}.pg-error-text{color:#fca5a5}.pg-hint{color:#9aa7bd;border-top:1px solid #1f2a44;align-items:center;gap:6px;padding:10px 12px;font-size:12px;display:flex}@media (max-width:1200px){.learn-grid{grid-template-columns:260px minmax(0,1fr)}.learn-aside{display:none}}@media (max-width:900px){.learn-grid{grid-template-columns:minmax(0,1fr)}.learn-nav{display:none}.learn-mobile-bar{background:var(--surface);border-bottom:1px solid var(--border);z-index:40;align-items:center;gap:12px;padding:12px 16px;display:flex;position:sticky;top:0}.learn-mobile-menu{color:var(--foreground);cursor:pointer;background:0 0;border:none;display:inline-flex}.learn-main{padding:20px 16px 80px}}.learn-drawer{display:none}@media (max-width:900px){.learn-drawer{display:block}.learn-drawer-backdrop{z-index:100;background:#0b122099;position:fixed;inset:0}.learn-drawer-panel{background:var(--surface);z-index:101;width:300px;max-width:85vw;position:fixed;top:0;bottom:0;left:0;overflow-y:auto}}