@import url('/fonts.css');
:root{--paper:#f8f8f2;--ink:#183c34;--muted:#67776f;--line:#dce3d8;--lime:#d9eda9;--orange:#ed7651;--white:#fff;--purple:#7761a7}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:Arial,Helvetica,sans-serif;font-size:16px;line-height:1.65}button,input,textarea,select{font:inherit}button,a{touch-action:manipulation}button{cursor:pointer}a{color:inherit}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid var(--orange);outline-offset:4px}header{min-height:95px;display:flex;align-items:center;gap:30px;justify-content:space-between;max-width:1440px;padding:18px 6%;margin:auto;border-bottom:1px solid var(--line)}.brand{font-size:27px;line-height:1;letter-spacing:-1.5px;display:inline-flex;align-items:center;gap:4px;font-weight:800;text-decoration:none;position:relative;padding-bottom:12px}.brand>span{font-weight:400}.brand svg{width:30px;height:30px;fill:var(--paper);stroke:var(--ink);stroke-width:2;margin-right:5px}.brand small{position:absolute;bottom:-2px;left:40px;font-size:8px;letter-spacing:2px;white-space:nowrap}header nav{display:flex;gap:30px}header nav a{font-size:14px;text-decoration:none}header nav a:hover{text-decoration:underline}.button{border:1px solid var(--ink);background:var(--ink);color:white;padding:13px 22px;border-radius:7px;font-weight:600;display:inline-flex;gap:12px;align-items:center;justify-content:center;text-decoration:none;line-height:1.4}.button:hover{background:#285b4e}.button:disabled{opacity:.55;cursor:wait}.button.secondary{color:var(--ink);background:transparent}.button.secondary:hover{background:#eaf0e2}.button.small{font-size:13px;padding:11px 15px}.text-button{border:0;background:transparent;color:var(--ink);text-decoration:underline;padding:8px}.eyebrow{font-size:11px;font-weight:700;letter-spacing:2px;display:block}.hero{max-width:1440px;padding:74px 6% 60px;margin:auto;display:grid;grid-template-columns:1.1fr 1fr;gap:65px;align-items:center}.hero h1{font-size:clamp(40px,4.6vw,68px);line-height:1.08;font-weight:600;letter-spacing:-3.3px;margin:22px 0}.hero h1 em{font-family:Georgia,serif;font-weight:400;color:var(--orange)}.hero p{max-width:510px;color:var(--muted);font-size:17px;line-height:1.75}.hero .actions{display:flex;gap:12px;flex-wrap:wrap;margin:28px 0 18px}.hero-note{font-size:12px!important;display:flex;gap:15px}.hero-note span:before{content:'✓ ';color:var(--ink)}.terminal-art{position:relative;border:1px solid #d5dfd4;background:#eaf0e5;border-radius:18px;padding:35px 25px 32px;transform:rotate(-1deg);min-height:350px}.terminal-window{border:1px solid #325349;border-radius:11px;background:#193e35;box-shadow:10px 18px 0 #d5ddca;color:#e9f2de;overflow:hidden;font-family:monospace;font-size:13px}.term-title{border-bottom:1px solid #36584b;padding:14px 18px;color:#a9bdae;display:flex;gap:5px}.dot{width:8px;height:8px;border-radius:50%;background:#ed7651;display:inline-block}.dot:nth-child(2){background:#e4cc72}.dot:nth-child(3){background:#b4cc87}.term-title span:last-child{margin-left:auto;font-size:10px}.term-lines{padding:22px;line-height:2.2}.term-lines .dim{color:#91ad9b}.term-lines .light{color:#d9eda9}.branch-map{height:55px;display:block;width:100%;margin-top:13px}.floating-label{position:absolute;right:-15px;bottom:15px;background:var(--lime);border:1px solid var(--ink);border-radius:7px;padding:10px 16px;transform:rotate(4deg);font-size:13px;box-shadow:3px 3px 0 var(--ink)}.stats-strip{max-width:1268px;margin:0 auto 60px;display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:24px 0}.stats-strip div{padding:0 25px;border-right:1px solid var(--line);display:flex;flex-direction:column}.stats-strip div:last-child{border:0}.stats-strip strong{font-family:Georgia,serif;font-size:30px;font-weight:400}.stats-strip small{color:var(--muted);font-size:12px}.section{max-width:1440px;padding:32px 6% 65px;margin:auto}.section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:26px}.section h2,.page-title{font-size:clamp(28px,3vw,42px);font-weight:500;line-height:1.2;letter-spacing:-1.4px;margin:10px 0 15px}.section-head p{color:var(--muted);font-size:14px;margin:5px 0}.pills{display:flex;gap:8px;flex-wrap:wrap;margin:20px 0 26px}.pill{border:1px solid var(--line);border-radius:30px;background:transparent;color:var(--ink);font-size:12px;padding:7px 16px}.pill[aria-pressed=true],.pill:hover{background:var(--ink);border-color:var(--ink);color:white}.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.course-card{border:1px solid var(--line);background:var(--white);border-radius:12px;padding:24px;text-decoration:none;display:flex;flex-direction:column;transition:transform .15s,border-color .15s;min-height:265px}.course-card:hover{transform:translateY(-3px);border-color:#9aaf9d}.card-top{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--muted)}.module-number{font-family:monospace;font-size:14px;color:#80958a}.badge{display:inline-block;border-radius:4px;padding:3px 8px;font-size:10px;font-weight:700;letter-spacing:.6px;background:#f7e9ba;color:#775817}.badge.Premium{background:#ede6f7;color:#6f5093}.badge.Master{background:#dcecd8;color:#305f3c}.course-card h3{font-size:21px;line-height:1.35;letter-spacing:-.5px;margin:24px 0 9px;font-weight:600}.course-card p{font-size:13px;color:var(--muted);margin:0 0 20px}.card-bottom{display:flex;justify-content:space-between;align-items:center;font-size:11px;padding-top:16px;border-top:1px solid var(--line);margin-top:auto}.card-bottom b{font-size:19px;font-weight:400}.cert-band{background:var(--ink);color:#edf3e4;border-radius:18px;display:grid;grid-template-columns:1fr 1.2fr;gap:35px;padding:40px;align-items:center;margin-top:45px}.cert-band p{color:#b1c7b8;font-size:14px}.cert-band .button{background:var(--lime);color:var(--ink);border-color:var(--lime)}.levels{display:flex;gap:15px;flex-wrap:wrap}.level-card{flex:1;min-width:110px;border:1px solid #4e6c5e;border-radius:10px;padding:20px 15px;text-align:center}.level-card strong{display:block;font-size:19px}.level-card span{display:block;color:#bed2b7;font-size:12px}.level-card .medal{font-size:34px;font-family:Georgia,serif;color:var(--lime)}footer{border-top:1px solid var(--line);max-width:1440px;margin:auto;padding:35px 6%;display:flex;flex-wrap:wrap;gap:20px;align-items:center;justify-content:space-between}footer p{font-family:Georgia,serif;font-style:italic;font-size:16px}footer nav{display:flex;gap:20px;font-size:11px}footer>small{flex-basis:100%;font-size:10px;color:var(--muted)}.page{max-width:1150px;margin:0 auto;padding:45px 25px 75px}.back{font-size:12px;text-decoration:none;display:inline-block;margin-bottom:24px}.lesson-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:40px}.lesson-sidebar{border-right:1px solid var(--line);padding-right:20px}.lesson-sidebar a{display:block;text-decoration:none;font-size:12px;padding:9px;border-radius:6px;margin:4px 0}.lesson-sidebar a.current{background:#e5edda;font-weight:bold}.lesson-body h1{font-size:38px;line-height:1.2;margin:10px 0 20px;font-weight:500;letter-spacing:-1px}.lesson-body h2{font-size:22px;margin-top:30px}.lesson-body p{color:#4c6257}.lesson-body pre,code{font-family:monospace}pre{white-space:pre-wrap;overflow-wrap:anywhere;background:#193e35;color:#deedcf;padding:20px;border-radius:9px;font-size:13px;line-height:1.7}.command-list{border:1px solid var(--line);border-radius:10px;overflow:hidden}.command-list>div{padding:13px 17px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap;background:#fff}.command-list small{color:var(--muted)}.quiz-question{border:1px solid var(--line);border-radius:10px;padding:22px;margin-bottom:15px;background:white}.quiz-question legend{font-weight:600;padding:0 7px;font-size:15px}.quiz-question label{display:flex;gap:12px;align-items:start;padding:10px;font-size:14px;cursor:pointer;border-radius:6px}.quiz-question label:has(input:checked){background:#eaf0df}.quiz-question input{margin-top:6px;accent-color:var(--ink)}.result{padding:22px;background:#e8efd8;border:1px solid #b8cba4;border-radius:10px;margin:20px 0}.correction{padding:15px 0;border-bottom:1px solid var(--line)}.correction p{margin:5px 0;font-size:13px}.correction strong{font-size:14px}.lab-card{border:1px solid var(--line);border-radius:10px;background:white;padding:25px;margin:15px 0}.lab-card h3{margin:0 0 12px}.lab-terminal{background:#183b33;color:#e5eddb;border-radius:10px;padding:20px;margin:20px 0}.lab-terminal label{font-size:13px}.lab-terminal input{background:#25493e;border:1px solid #769681;border-radius:5px;padding:12px;width:100%;color:#fff;font-family:monospace;margin:10px 0}.terminal-log{font-family:monospace;font-size:12px;white-space:pre-wrap;min-height:70px;max-height:200px;overflow:auto}.exam-banner{position:sticky;top:0;background:var(--paper);padding:14px;border:1px solid var(--line);display:flex;gap:20px;justify-content:space-between;z-index:2;border-radius:7px;margin:20px 0}.exam-banner strong{font-variant-numeric:tabular-nums}.callout{border-left:3px solid var(--orange);padding:12px 20px;background:#f4eee2;font-size:14px;margin:20px 0}.muted{color:var(--muted);font-size:13px}.account-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;margin:28px 0}.account-stats article{border:1px solid var(--line);border-radius:10px;padding:22px;background:#fff}.account-stats strong{display:block;font-size:32px;font-family:Georgia,serif;font-weight:400}.account-stats small{font-size:12px;color:var(--muted)}table{width:100%;border-collapse:collapse;font-size:13px;margin:20px 0}th,td{text-align:left;padding:13px;border-bottom:1px solid var(--line)}th{font-size:11px;color:var(--muted)}dialog{color:var(--ink);background:var(--paper);border:1px solid var(--line);border-radius:15px;max-width:480px;width:92%;padding:35px}dialog::backdrop{background:#102c24aa}dialog h2{font-family:Georgia,serif;font-size:32px;line-height:1.2}dialog p{font-size:14px}dialog form label{display:block;font-size:13px;margin:16px 0}dialog input{width:100%;padding:12px;border:1px solid #bfcbbf;border-radius:6px;background:#fff;margin-top:6px}dialog .close{position:absolute;top:12px;right:14px;background:none;border:0;font-size:27px;color:var(--ink)}dialog form .button{width:100%}.loading{padding:70px;text-align:center}.certificate{max-width:900px;margin:30px auto;padding:55px;border:8px double #b8c6a7;background:#fff;text-align:center}.certificate .name{font-family:Georgia,serif;font-size:36px}.certificate h1{font-size:42px;font-weight:400;font-family:Georgia,serif}.certificate .score{font-size:25px}.certificate small{font-size:11px;display:block;overflow-wrap:anywhere}.certificate .badge{font-size:18px;margin:15px}.certificate-rule{width:70px;border:0;border-top:2px solid var(--orange);margin:30px auto}#toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);background:var(--ink);color:white;padding:12px 24px;z-index:10;border-radius:7px;max-width:90%;box-shadow:0 5px 25px #0002;display:none}.progress-line{width:100%;height:6px;accent-color:var(--ink)}.search-input{padding:12px 16px;width:100%;max-width:330px;border:1px solid var(--line);border-radius:7px;background:white;color:var(--ink)}.subnav{display:flex;gap:9px;border-bottom:1px solid var(--line);padding-bottom:14px;margin:25px 0;flex-wrap:wrap}.subnav button{border:1px solid var(--line);background:transparent;border-radius:5px;padding:8px 15px;color:var(--ink);font-size:13px}.subnav button.active{background:var(--ink);color:white}.empty{padding:35px;background:white;border:1px dashed var(--line);border-radius:10px}.mobile-only{display:none}@media(max-width:900px){.hero{gap:35px;padding-top:45px}.hero h1{font-size:48px}.cards{grid-template-columns:repeat(2,1fr)}header{padding:18px 25px;gap:15px;flex-wrap:wrap}header nav{gap:20px}.terminal-art{padding:23px 15px}.section{padding-left:25px;padding-right:25px}.stats-strip{margin:0 25px 25px}.lesson-layout{grid-template-columns:1fr}.lesson-sidebar{display:none}.hero-note{flex-wrap:wrap}.cert-band{grid-template-columns:1fr}}@media(max-width:600px){header nav{order:3;width:100%;justify-content:space-between;gap:10px}header nav a{font-size:12px}.brand{font-size:24px}.hero{grid-template-columns:1fr;padding:35px 24px}.hero h1{font-size:47px;letter-spacing:-2px}.hero p{font-size:15px}.hero-note{font-size:11px!important}.terminal-art{min-height:0;margin-bottom:10px}.stats-strip{grid-template-columns:repeat(2,1fr);gap:18px;padding:20px 0}.stats-strip div:nth-child(2){border:0}.stats-strip strong{font-size:25px}.cards{grid-template-columns:1fr}.section-head{align-items:start;flex-direction:column}.cert-band{padding:25px}.level-card{padding:14px 8px;min-width:80px}.levels{gap:8px}.account-stats{grid-template-columns:1fr}.page{padding:30px 20px}.exam-banner{font-size:12px;gap:10px}.certificate{padding:25px 15px}.certificate .name{font-size:28px}.certificate h1{font-size:32px}.course-card{min-height:235px}.section h2{font-size:32px}footer nav{flex-wrap:wrap}table{font-size:11px}th,td{padding:8px}.lesson-body h1{font-size:32px}}@media print{header,footer,.no-print,#toast{display:none!important}body{background:white}.certificate{margin:0;page-break-inside:avoid}.page{padding:0}.certificate{border:5px double #193e35}}