@font-face {
  font-family: 'DM Sans';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(assets/font-0.ttf) format('truetype');
}
@font-face {
  font-family: 'DM Sans';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url(assets/font-1.ttf) format('truetype');
}
@font-face {
  font-family: 'DM Sans';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url(assets/font-2.ttf) format('truetype');
}
@font-face {
  font-family: 'DM Sans';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url(assets/font-3.ttf) format('truetype');
}
@font-face {
  font-family: 'Manrope';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(assets/font-4.ttf) format('truetype');
}
@font-face {
  font-family: 'Manrope';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url(assets/font-5.ttf) format('truetype');
}
@font-face {
  font-family: 'Manrope';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url(assets/font-6.ttf) format('truetype');
}
@font-face {
  font-family: 'Manrope';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url(assets/font-7.ttf) format('truetype');
}
@font-face {
  font-family: 'Manrope';
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url(assets/font-8.ttf) format('truetype');
}
:root{--ink:#232531;--muted:#737580;--purple:#6854da;--pale:#eeebfb;--line:#e8e8ed;--bg:#f8f9fc;--white:#fff}*{box-sizing:border-box}body{margin:0;font-family:'DM Sans',sans-serif;font-size:16px;color:var(--ink);background:var(--bg)}button,input,textarea,select{font:inherit}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}a{color:inherit;text-decoration:none}button{cursor:pointer}button:disabled{cursor:default;opacity:.5}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #9d89ff;outline-offset:4px}button{color:inherit}h1,h2,h3,h4,p{margin-top:0}h1,h2,h3{font-family:Manrope,sans-serif}h1{font-size:36px;letter-spacing:-1.4px;font-weight:800;margin-bottom:10px}h2{font-size:22px;letter-spacing:-.6px}h3{font-size:17px;line-height:1.5}p{line-height:1.7;color:var(--muted)}small{font-size:13px}.sidebar{width:246px;position:fixed;inset:0 auto 0 0;background:#fff;border-right:1px solid var(--line);padding:32px 20px 20px;display:flex;flex-direction:column;z-index:30}.brand{display:flex;gap:12px;align-items:center;padding:0 10px;font-family:Manrope;font-size:25px;line-height:1;font-weight:800;letter-spacing:-1px}.brand-icon{width:41px;height:43px;background:var(--purple);border-radius:13px;color:white;font-size:40px;text-align:center;line-height:38px;letter-spacing:-7px;padding-right:6px}.brand-icon span{color:#c7bdff}.brand-sub{display:block;font:600 10px 'DM Sans';letter-spacing:3.5px;margin-top:7px}.edition{font-size:11px;font-weight:700;letter-spacing:.7px;padding:28px 10px 32px;color:#777986}.edition span{font-size:9px;letter-spacing:0;background:#f1f1f6;padding:5px;border-radius:4px;margin-left:6px}.nav-label{font-size:10px;letter-spacing:1.5px;font-weight:700;color:#9a9ba7;padding:0 14px 14px}nav a{display:flex;align-items:center;gap:13px;font-size:14px;color:#777987;padding:13px 14px;margin-bottom:5px;border-radius:8px}nav a.active{background:var(--pale);color:var(--purple);font-weight:650}.nav-icon{font-size:19px;line-height:1;width:20px}.nav-count{margin-left:auto;font-size:11px;background:white;padding:2px 6px;border-radius:4px}.sidebar-bottom{margin-top:auto;padding-top:35px}.daily{border:1px solid var(--line);background:linear-gradient(150deg,#f8f6ff,#fff);border-radius:12px;padding:16px}.daily h3{font-size:13px;margin:9px 0 7px;line-height:1.6}.daily p{font-size:11px;margin-bottom:15px}.daily a{font-size:12px;font-weight:700;color:var(--purple);display:flex;justify-content:space-between}.tiny-icon{color:var(--purple);font-size:23px}.local-profile{display:flex;gap:10px;align-items:center;font-size:12px;border-top:1px solid var(--line);margin-top:24px;padding:22px 3px 0}.local-profile small{display:block;font-size:10px;color:#9697a0;margin-top:5px}.avatar{display:grid;place-items:center;background:#eae6df;width:34px;height:34px;border-radius:50%;color:#817363;font-size:13px}.shell{margin-left:246px}.topbar{height:82px;border-bottom:1px solid var(--line);background:#ffffffd9;display:flex;align-items:center;gap:22px;padding:0 42px}.breadcrumb{font-size:12px;color:#8a8c96;white-space:nowrap}.breadcrumb span{margin:0 14px;color:#c8c9d0}.search-trigger{margin-left:auto;display:flex;align-items:center;gap:12px;background:#f7f8fa;border:1px solid #edeef2;border-radius:7px;color:#90919c;padding:10px 14px;font-size:12px;width:295px;text-align:left}.search-trigger>span{font-size:23px;line-height:14px}kbd{font-size:10px;border:1px solid #e3e4e9;border-radius:4px;padding:3px 5px;margin-left:auto;background:#fff;white-space:nowrap}.release-chip{font-size:11px;white-space:nowrap;color:#747782;display:flex;align-items:center;gap:7px}.release-chip span{width:6px;height:6px;background:#66b09d;border-radius:50%}main{max-width:1480px;margin:auto;padding:38px 42px 32px;min-height:calc(100vh - 140px)}.eyebrow{font-size:10px;letter-spacing:1.8px;font-weight:700;color:var(--purple);margin-bottom:12px}.intro{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px}.intro p{font-size:14px;margin:0}.intro h1{font-size:30px}.outline-btn,.primary-btn{display:inline-flex;justify-content:center;align-items:center;gap:10px;padding:12px 18px;border-radius:7px;border:1px solid var(--line);background:white;font-size:13px;font-weight:600}.primary-btn{background:var(--purple);color:white;border-color:var(--purple)}.primary-btn:hover{background:#5741ca}.outline-btn:hover{background:#f3f1fc}.dashboard-grid{display:grid;grid-template-columns:minmax(0,1fr) 284px;gap:25px}.hero{border-radius:14px;min-height:291px;position:relative;overflow:hidden;background:#181f2b;padding:30px;color:#fff;display:flex;align-items:center}.hero:after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,#17212c 2%,#16232fe8 30%,#12223255 76%,#121c260a)}.hero-image{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center}.hero-content{position:relative;z-index:1;max-width:400px}.hero .pill{background:#ffffff17;border:1px solid #ffffff25;color:#fff}.pill{display:inline-block;border-radius:5px;background:var(--pale);color:var(--purple);padding:5px 8px;font-size:10px;font-weight:600;letter-spacing:.2px}.hero h2{font-size:30px;line-height:1.3;letter-spacing:-1px;margin:15px 0 10px}.hero p{font-size:13px;color:#c7cdd4;max-width:300px;line-height:1.7}.hero .primary-btn{background:white;border-color:white;color:#222735;margin-top:7px}.hero-meta{margin-left:12px;font-size:11px;color:#bcc6d1}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:18px}.stat{background:#fff;border:1px solid var(--line);border-radius:10px;display:flex;align-items:center;gap:13px;padding:18px}.stat-icon{width:36px;height:36px;background:#f1eefa;color:var(--purple);border-radius:9px;display:grid;place-items:center;font-size:18px}.stat:nth-child(2) .stat-icon{background:#eaf4f0;color:#489780}.stat:nth-child(3) .stat-icon{background:#fff3e3;color:#c29c57}.stat strong{display:block;font-family:Manrope;font-size:18px;line-height:1.4}.stat small{font-size:10px;color:#868995}.panel{border:1px solid var(--line);border-radius:12px;padding:23px;background:#fff}.panel h3{font-size:14px;margin-bottom:18px}.progress-ring{--value:0%;width:122px;height:122px;border-radius:50%;background:conic-gradient(var(--purple) var(--value),#eeedf5 0);margin:20px auto;display:grid;place-items:center}.ring-inner{width:104px;height:104px;border-radius:50%;background:#fff;display:flex;flex-direction:column;justify-content:center;align-items:center}.ring-inner strong{font-size:28px;font-family:Manrope;letter-spacing:-1px}.ring-inner small{font-size:10px;color:var(--muted);margin-top:3px}.progress-caption{text-align:center;font-size:11px;color:#9697a0}.progress-legend{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding-top:16px;margin-top:22px;font-size:11px}.progress-legend strong{color:var(--purple)}.tip{margin-top:18px;background:#f1effc;border-color:#e6e2f5;padding:20px}.tip h3{color:#615399;font-size:12px;margin-bottom:10px}.tip p{color:#817992;font-size:12px;margin:0;line-height:1.8}.section-heading{display:flex;align-items:center;justify-content:space-between;margin:32px 0 17px}.section-heading h2{font-size:20px;margin:0}.text-link{font-size:12px;color:var(--purple);font-weight:600}.tabs{display:flex;gap:25px;border-bottom:1px solid var(--line);margin-bottom:20px}.tabs button{border:none;background:none;color:#90909c;padding:0 0 12px;font-size:12px;position:relative}.tabs button.active{color:var(--purple);font-weight:650}.tabs button.active:after{content:'';height:2px;background:var(--purple);position:absolute;bottom:-1px;left:0;right:0}.module-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.module-card{border:1px solid var(--line);border-radius:11px;overflow:hidden;background:#fff;transition:transform .2s,box-shadow .2s;display:block}.module-card:hover{transform:translateY(-3px);box-shadow:0 10px 30px #27224a0c}.module-art{height:140px;position:relative;overflow:hidden;background:#263c48;display:flex;align-items:center;justify-content:center}.module-art img{width:100%;height:100%;object-fit:cover}.module-art:after{content:'';position:absolute;inset:0;background:linear-gradient(0deg,#111b3055,transparent)}.module-number{position:absolute;top:12px;left:12px;z-index:1;color:#fff;font-size:10px;background:#13182780;border:1px solid #ffffff20;border-radius:4px;padding:4px 7px}.module-art .art-symbol{font-size:60px;color:#ffffff99;position:relative;z-index:1}.art-1{background:linear-gradient(125deg,#284d6f,#8dadb6)}.art-2{background:linear-gradient(125deg,#192d49,#62648d)}.art-3{background:linear-gradient(125deg,#44684d,#99b99c)}.art-4{background:linear-gradient(125deg,#583966,#d29683)}.art-5{background:linear-gradient(125deg,#183e48,#6eb3ae)}.art-6{background:linear-gradient(125deg,#494275,#9086bd)}.module-body{padding:17px}.module-topline{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px;font-size:9px;color:#90929b}.level{color:#518674;background:#eff7f3;padding:3px 6px;border-radius:4px}.level.intermediate{color:#af884b;background:#fff7e7}.level.advanced{color:#8e70b6;background:#f5effb}.module-body h3{font-size:14px;margin-bottom:6px}.module-body p{font-size:11px;line-height:1.6;margin-bottom:17px;min-height:36px}.module-meta{font-size:10px;color:#93949e;display:flex;gap:12px}.mini-progress{height:3px;background:#eeedf5;margin:16px 0 8px;border-radius:5px;overflow:hidden}.mini-progress span{display:block;height:100%;background:var(--purple)}.card-bottom{font-size:9px;color:#9b9ca5;display:flex;justify-content:space-between}.card-bottom strong{color:var(--purple);font-weight:600}.resources-strip{margin-top:26px;border:1px solid var(--line);border-radius:10px;padding:19px 22px;background:white;display:flex;gap:18px;align-items:center}.resources-strip .stat-icon{flex-shrink:0}.resources-strip h3{font-size:13px;margin:0 0 3px}.resources-strip p{font-size:11px;margin:0}.resources-strip a{margin-left:auto;white-space:nowrap}.mobile-menu{display:none}footer{max-width:1480px;margin:auto;padding:20px 42px;font-size:10px;color:#aaaab3;display:flex;justify-content:space-between;border-top:1px solid var(--line)}.icon-button{border:0;background:transparent;padding:8px;font-size:18px;color:var(--muted)}dialog{padding:0;border:1px solid var(--line);border-radius:14px;width:min(640px,90vw);max-height:80vh;box-shadow:0 30px 100px #1b163644}dialog::backdrop{background:#1b19335c;backdrop-filter:blur(5px)}.search-head{display:flex;padding:18px;border-bottom:1px solid var(--line);gap:10px}.search-head input{width:100%;border:0;padding:10px;outline:0}#search-results{max-height:60vh;overflow:auto;padding:12px}.search-result{display:block;padding:14px;border-radius:7px}.search-result:hover{background:var(--pale)}.search-result strong{font-size:14px;display:block}.search-result small{color:var(--muted);display:block;margin-top:5px}#toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);padding:12px 20px;border-radius:8px;background:#292339;color:#fff;font-size:13px;z-index:99;display:none}.skip{position:fixed;top:-100px;left:20px;background:white;padding:15px;z-index:100}.skip:focus{top:10px}.page-heading{margin-bottom:28px}.page-heading p{max-width:760px;font-size:15px}.filter-row{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:23px}.filter-row input,.filter-row select{padding:11px 14px;background:white;border:1px solid var(--line);border-radius:7px;font-size:13px}.filter-row input{flex:1;min-width:180px}.empty{padding:40px;text-align:center;border:1px dashed #d7d3e7;border-radius:12px;color:var(--muted)}.lesson-layout{display:grid;grid-template-columns:minmax(0,1fr) 255px;gap:35px}.lesson-paper{background:white;border:1px solid var(--line);border-radius:14px;padding:36px 42px}.lesson-paper h1{font-size:34px;line-height:1.3}.lesson-paper h2{font-size:23px;margin-top:36px}.lesson-paper p,.lesson-paper li{font-size:16px;line-height:1.9;color:#646773}.lesson-paper strong{color:#343742}.lesson-paper li{padding:0 0 15px 8px}.lesson-paper ol{padding-left:22px}.lesson-paper .lead{font-size:18px;color:#7c788d}.lesson-banner{background:#f4f1fd;border-left:3px solid var(--purple);padding:20px;margin:25px 0;border-radius:0 7px 7px 0}.lesson-banner p{margin:0;font-size:14px}.lesson-banner h3{font-size:15px;margin:0 0 8px}.lesson-banner.warning{background:#fff8eb;border-color:#d9af62}.lesson-image{margin:28px 0}.lesson-image img{width:100%;border-radius:8px}.lesson-image figcaption{font-size:11px;line-height:1.7;color:var(--muted);margin-top:8px}.lesson-side{position:sticky;top:25px;align-self:start}.lesson-side h3{font-size:13px}.lesson-side a{font-size:12px;line-height:1.6;display:flex;gap:8px;padding:11px;border-radius:6px;margin-bottom:3px;color:#83828f}.lesson-side a.current{background:var(--pale);color:var(--purple)}.lesson-side a.done{color:#498775}.lesson-actions{display:flex;align-items:center;gap:10px;justify-content:space-between;margin-top:28px}.lesson-utility{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:20px;margin-bottom:25px}.lesson-utility small{color:var(--muted)}.quiz{border:1px solid var(--line);padding:22px;border-radius:10px;margin-top:28px}.quiz h3{font-size:16px}.quiz button{display:block;text-align:left;padding:12px 15px;width:100%;border:1px solid var(--line);background:white;border-radius:7px;margin:9px 0;font-size:14px}.quiz button.correct{background:#eaf7f0;border-color:#67ad8a}.quiz button.incorrect{background:#fff0ee;border-color:#d29d92}.quiz-feedback{font-size:14px!important;margin:14px 0 0}.notes-field{width:100%;min-height:140px;border:1px solid var(--line);border-radius:8px;padding:15px;line-height:1.7;font-size:14px;resize:vertical;background:#fcfcff}.diagram{margin:25px 0;background:#202535;padding:24px;border-radius:9px;display:flex;align-items:center;justify-content:center;gap:9px;flex-wrap:wrap}.diagram span{font-size:12px;border:1px solid #77748f;color:#ece9ff;background:#ffffff09;padding:14px 12px;border-radius:6px}.diagram b{color:#9d94c4}.diagram-caption{font-size:11px;text-align:center;color:var(--muted);margin-top:-15px}.lesson-list{border:1px solid var(--line);border-radius:12px;background:white;overflow:hidden}.lesson-row{display:flex;gap:18px;align-items:center;padding:19px 23px;border-bottom:1px solid var(--line)}.lesson-row:last-child{border:0}.lesson-row:hover{background:#fbfaff}.lesson-row .row-number{background:var(--pale);color:var(--purple);border-radius:7px;padding:10px;font-size:13px}.lesson-row strong{font-size:15px}.lesson-row p{font-size:12px;margin:5px 0 0}.lesson-row .row-duration{margin-left:auto;font-size:12px;color:var(--muted);white-space:nowrap}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:22px}.resource-card{border:1px solid var(--line);background:white;padding:25px;border-radius:12px}.resource-card h3{font-size:18px}.resource-card p{font-size:14px}.resource-card a{font-size:13px;color:var(--purple);font-weight:600}.practice-card{padding:27px;border:1px solid var(--line);border-radius:12px;background:white;margin-bottom:20px}.practice-card h2{margin:13px 0}.practice-card li{font-size:14px;line-height:1.8;color:var(--muted)}.check-item{display:flex;gap:12px;padding:9px 0;font-size:14px;line-height:1.6;align-items:flex-start}.check-item input{accent-color:var(--purple);margin-top:4px;width:16px;height:16px;flex-shrink:0}.note-card{background:#fff;border:1px solid var(--line);padding:24px;border-radius:12px;margin-bottom:20px}.note-card p{white-space:pre-wrap;font-size:14px}.note-card a{font-size:13px;color:var(--purple)}.toolbar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:24px}.badge-large{font-size:50px;color:var(--purple)}.compare{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:25px 0}.compare>div{padding:20px;border:1px solid var(--line);border-radius:8px}.compare h4{font-size:13px;color:#4e9377}.compare>div:first-child h4{color:#b57a63}.compare p{font-size:13px;margin:0}.shortcut-table{width:100%;border-collapse:collapse;font-size:14px}.shortcut-table td,.shortcut-table th{text-align:left;padding:14px;border-bottom:1px solid var(--line)}.shortcut-table th{font-size:12px;color:var(--muted)}
@media(min-width:1600px){main{padding-top:48px}.hero{min-height:340px}.module-art{height:180px}}
@media(max-width:1200px){.sidebar{width:210px;padding:25px 15px}.shell{margin-left:210px}.topbar{padding:0 28px}.release-chip{display:none}main{padding:30px 28px}.dashboard-grid{grid-template-columns:minmax(0,1fr) 235px;gap:20px}.hero{padding:25px}.hero h2{font-size:27px}.hero-meta{display:none}.stat{padding:13px;gap:9px}.module-grid{gap:12px}.module-body{padding:14px}.module-art{height:118px}.lesson-layout{grid-template-columns:minmax(0,1fr) 210px;gap:20px}.lesson-paper{padding:28px}.search-trigger{width:240px}}
@media(max-width:1000px){.dashboard-grid{grid-template-columns:1fr}.dashboard-aside{display:grid;grid-template-columns:1fr 1fr;gap:20px}.dashboard-aside .tip{margin:0}.progress-ring{width:100px;height:100px;margin:15px auto}.ring-inner{width:84px;height:84px}.progress-legend{margin-top:10px}.breadcrumb{display:none}.module-grid{grid-template-columns:repeat(2,1fr)}.lesson-layout{grid-template-columns:1fr}.lesson-side{position:static;order:2}.intro h1{font-size:27px}}
@media(max-width:720px){.sidebar{transform:translateX(-100%);transition:transform .2s;width:246px;box-shadow:0 0 100px #0002}.sidebar.open{transform:translateX(0)}.shell{margin-left:0}.mobile-menu{display:block}.topbar{height:65px;padding:0 18px;gap:8px}.search-trigger{width:auto;flex:1;font-size:11px}main{padding:26px 19px}.intro{gap:18px;align-items:flex-start}.intro h1{font-size:25px}.intro p{font-size:12px}.intro>.outline-btn{font-size:11px;padding:10px;white-space:nowrap}.hero{min-height:285px;padding:25px}.hero h2{font-size:29px}.hero:after{background:linear-gradient(90deg,#17212cf5,#16232fbb,#12223255)}.stats{gap:8px}.stat{padding:13px 8px;display:block}.stat-icon{margin-bottom:10px;width:28px;height:28px;font-size:14px}.stat strong{font-size:16px}.stat small{font-size:9px}.module-grid{gap:12px}.module-body h3{font-size:13px}.module-art{height:108px}.module-body p{font-size:11px}.module-meta{font-size:9px;gap:5px}.dashboard-aside{grid-template-columns:1fr 1fr;gap:12px}.panel{padding:18px}.resources-strip{padding:17px;gap:12px}.resources-strip p{display:none}.resources-strip h3{font-size:12px}.resources-strip .text-link{font-size:10px}.resources-strip .stat-icon{margin:0}.tabs{gap:22px}.lesson-paper{padding:24px 20px}.lesson-paper h1{font-size:28px}.lesson-paper p,.lesson-paper li{font-size:16px}.lesson-actions{flex-wrap:wrap}.two-col{grid-template-columns:1fr}.page-heading h1{font-size:30px}.compare{grid-template-columns:1fr}.lesson-row{padding:16px 13px;gap:12px}.lesson-row strong{font-size:13px}.lesson-row p{display:none}.lesson-row .row-duration{font-size:10px}footer{padding:20px;display:block;line-height:1.8}footer span{display:block}.daily{display:none}.sidebar-bottom{padding-top:20px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
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/* Practical how-to library and authentic software references */
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