:root{--paper:#fff0e5;--white:#fff;--ink:#10162f;--muted:#596073;--line:#d9d2cc;--accent:#3a10e5;--light:#f0ecff;--terminal:#10162f;--mono:Consolas,'Cascadia Code',monospace;--reading-size:16px;font-family:'Segoe UI',system-ui,sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}
*{box-sizing:border-box}body{margin:0}button,input,select,textarea{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled,input:disabled,select:disabled,textarea:disabled{cursor:default}button:disabled{opacity:.5}a{color:inherit}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:3px solid #3a10e5;outline-offset:3px}[hidden]{display:none!important}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip{position:absolute;left:16px;top:-80px;z-index:5;background:white;padding:12px}.skip:focus{top:8px}p{line-height:1.65}h1,h2,h3{line-height:1.25}h1{letter-spacing:-1.1px;font-size:clamp(28px,2.45vw,40px);font-weight:750;margin:14px 0 18px}h2{font-size:19px}h3{font-size:15px}.eyebrow{font-size:10px;font-weight:650;letter-spacing:1.1px;color:var(--muted)}.dot{width:7px;height:7px;display:inline-block;background:var(--accent);border-radius:50%;flex-shrink:0}
.top{min-height:70px;padding:12px 3vw;display:flex;align-items:center;gap:25px;border-bottom:1px solid var(--line);background:var(--paper)}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-size:24px;font-weight:750;letter-spacing:-.8px}.main-nav{display:flex;gap:25px;margin-left:10px;align-self:stretch;align-items:center}.main-nav a{font-size:14px;text-decoration:none;padding:10px 0;border-bottom:2px solid transparent}.main-nav a[aria-current=page]{color:var(--accent);border-color:var(--accent);font-weight:650}.font-controls{display:flex;gap:3px;margin-left:auto}.font-controls button{background:transparent;border:0;color:var(--accent);min-width:36px;min-height:36px;border-radius:5px;font-weight:600;font-size:13px}.local{font-size:12px;color:var(--muted);display:flex;gap:8px;align-items:center;white-space:nowrap}main{max-width:1780px;margin:0 auto}.primary,.secondary{min-height:40px;padding:10px 15px;border-radius:6px;font-size:13px;font-weight:650}.primary{background:var(--accent);color:white;border:1px solid var(--accent)}.secondary{display:inline-block;text-decoration:none;background:var(--white);border:1px solid #b8b4c6;color:var(--accent)}.text-button{border:0;background:transparent;color:var(--muted);font-size:12px;padding:10px 0;min-height:40px}.tag{display:inline-block;font-size:11px;color:var(--accent);background:var(--light);padding:5px 9px;border-radius:4px}.progress-meta{display:flex;justify-content:space-between;gap:8px;font-size:12px;color:var(--muted);margin:10px 0}progress{width:100%;height:6px;appearance:none;border:0;background:#e4dfec;border-radius:8px;display:block}progress::-webkit-progress-bar{background:#e4dfec;border-radius:8px}progress::-webkit-progress-value{background:var(--accent);border-radius:8px}progress::-moz-progress-bar{background:var(--accent);border-radius:8px}
.home-view{max-width:1320px;margin:0 auto;padding:38px 38px 35px}.home-heading{display:flex;justify-content:space-between;align-items:center;gap:25px;padding-bottom:28px}.home-heading h1{font-size:clamp(30px,3.3vw,42px);margin:10px 0}.home-heading p{color:var(--muted);font-size:16px;margin:0;max-width:660px}.home-label{font-size:12px;color:var(--accent);white-space:nowrap}.catalog-heading{display:flex;justify-content:space-between;align-items:center;gap:25px;margin-bottom:14px}.catalog-heading h2{margin:0;font-size:23px;letter-spacing:-.5px}.catalog-search{display:flex;align-items:center;gap:10px;border:1px solid #b8b4c6;background:var(--white);border-radius:5px;padding:0 13px;width:330px}.catalog-search>span{font-size:24px;color:var(--muted)}.catalog-search input{border:0;background:transparent;padding:11px 0;width:100%;min-width:0;font-size:13px;color:var(--ink)}.catalog-layout{display:grid;grid-template-columns:minmax(0,1.8fr) minmax(275px,1fr);gap:26px;align-items:start}.course-card{border:1px solid #b8b4c6;border-radius:6px;overflow:hidden;background:var(--white)}.course-cover{position:relative;background:var(--ink);color:white;padding:20px 26px;min-height:112px}.course-symbol{position:absolute;right:27px;top:25px;font:600 52px/1 var(--mono);letter-spacing:-3px;color:var(--white)}.course-level{font-size:10px;letter-spacing:1.2px;font-weight:700;color:var(--ink);background:#ffd300;padding:4px 7px;border-radius:2px}.course-cover p{font-size:13px;line-height:1.4;font-weight:600;letter-spacing:.8px;margin:15px 0 7px;max-width:75%}.cover-caption{font-size:10px;letter-spacing:1.2px;color:#c5c7d3}.course-card-body{padding:23px 26px}.course-card-body h3{font-size:27px;letter-spacing:-.65px;margin:12px 0}.course-card-body>p{font-size:15px;color:var(--muted);max-width:600px;margin:0 0 20px}.course-facts{display:flex;gap:20px;font-size:12px;color:var(--muted);margin-bottom:24px}.home-summary{padding:25px;border:1px solid #b8b4c6;border-radius:6px;background:var(--white)}.home-summary h2{font-size:21px;letter-spacing:-.5px;margin:11px 0}.home-summary>p{font-size:13px;color:var(--muted);margin:0 0 24px}.home-path{list-style:none;padding:0;margin:0}.home-path li{display:flex;gap:14px;align-items:start;position:relative;padding-bottom:27px}.home-path li:not(:last-child):before{content:'';position:absolute;left:14px;top:32px;bottom:3px;width:1px;background:var(--line)}.path-number{display:flex;align-items:center;justify-content:center;width:30px;height:30px;border:1px solid #b8b4c6;border-radius:50%;color:var(--muted);font-size:12px;flex-shrink:0}.home-path .path-active .path-number,.home-path .path-complete .path-number{background:var(--accent);color:white;border-color:var(--accent)}.home-path strong{display:block;font-size:13px;line-height:1.5}.home-path small{display:block;font-size:12px;color:var(--muted);margin-top:5px}.home-summary-foot{display:flex;gap:10px;align-items:start;padding-top:17px;border-top:1px solid var(--line)}.home-summary-foot .dot{margin-top:6px}.home-summary-foot p{font-size:12px;color:var(--muted);margin:0}.catalog-future{margin-top:32px;padding:24px 0;border-top:1px solid var(--line)}.catalog-future h2{font-size:17px;margin:0 0 8px}.catalog-future p,.catalog-empty{font-size:14px;color:var(--muted);margin:0}.catalog-empty{padding:24px;border:1px dashed #b8b4c6;border-radius:6px;margin:20px 0;background:var(--white)}
.course-shell{display:grid;grid-template-columns:270px minmax(0,1fr) 300px;gap:20px;padding:20px 25px 35px;align-items:start}.course-shell.index-collapsed{grid-template-columns:minmax(0,1fr) 300px}.course-index{padding:8px 9px 10px;position:sticky;top:20px;max-height:calc(100vh - 40px);overflow:auto;scrollbar-width:thin}.index-heading{display:flex;gap:13px;align-items:center;margin:0 0 20px}.index-heading h2{font-size:19px;letter-spacing:-.5px;margin:0}.back-home{text-decoration:none;font-size:22px;min-width:24px}.course-outline{margin-top:23px}.outline-module{border-top:1px solid var(--line);padding:15px 0}.outline-module summary{cursor:pointer;display:flex;align-items:center;gap:8px;font-size:13px;font-weight:650;line-height:1.5;list-style:none}.outline-module summary:before{content:'›';font-size:19px;font-weight:400;transform:rotate(0)}.outline-module[open] summary:before{transform:rotate(90deg)}.outline-module summary small{font-size:10px;color:var(--muted);font-weight:400;margin-left:auto;white-space:nowrap}.outline-module ol{list-style:none;padding:10px 0 0;margin:0}.outline-step{display:flex;align-items:center;gap:10px;width:100%;border:0;text-align:left;background:transparent;padding:10px 9px;color:var(--muted);font-size:12px;line-height:1.55;border-radius:5px}.outline-step[aria-current=step]{background:var(--light);color:var(--accent);font-weight:650}.outline-step:disabled{opacity:1;color:#656a7c}.step-status{width:16px;height:16px;border:1.5px solid #898c9b;border-radius:50%;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:10px}.outline-step[aria-current=step] .step-status{border-color:var(--accent);border-width:2px}.is-complete .step-status{background:#19624d;border-color:#19624d;color:white}.index-note{font-size:11px;color:var(--muted);border-top:1px solid var(--line);padding-top:17px}.lesson-surface{background:var(--white);border:1px solid var(--line);border-radius:6px;padding:18px 26px 24px;min-width:0}.lesson-toolbar{display:flex;justify-content:space-between;gap:15px;align-items:center}.index-toggle{background:transparent;border:0;padding:8px 0;min-height:40px;font-size:12px;color:var(--muted);display:flex;align-items:center;gap:7px}.lesson-navigation{display:flex;gap:14px;align-items:center}.lesson-navigation .primary{padding:8px 12px;min-height:36px;font-size:12px}.lesson-context{font-size:12px;line-height:1.6;color:var(--muted);margin:6px 0 12px;overflow-wrap:anywhere}.lesson-meta{display:flex;justify-content:space-between;gap:10px;align-items:center}.lesson-meta .eyebrow{background:#f0ecff;padding:4px 6px;border-radius:3px;font-size:9px;letter-spacing:.8px}.mode{font-size:10px;color:var(--muted)}.explanation{font-size:var(--reading-size);line-height:1.8;color:#454b61;white-space:pre-line;margin:0}.learning-goal{display:flex;align-items:start;gap:14px;background:var(--light);border-left:3px solid var(--accent);border-radius:4px;padding:14px 16px;margin:18px 0}.goal-icon{display:flex;align-items:center;justify-content:center;width:34px;height:34px;background:#ffd300;color:var(--accent);border-radius:8px;font-size:20px;flex-shrink:0}.learning-goal h2{font-size:15px;margin:0 0 7px;color:#10162f}.objective{font-size:var(--reading-size);line-height:1.65;margin:0;color:#10162f}.command-guide{padding:0 0 15px;border-bottom:1px solid var(--line);margin-bottom:16px}.command-guide h2{font-size:15px;margin:0 0 12px}.command-guide dl{display:grid;grid-template-columns:max-content minmax(0,1fr);gap:9px 16px;margin:0}.command-guide dt{font:13px/1.7 var(--mono);color:var(--accent);background:#f0ecff;padding:2px 7px;border-radius:4px;align-self:start}.command-guide dd{margin:0;font-size:calc(var(--reading-size) - 2px);line-height:1.7;color:var(--muted)}.command-guide>p{font-size:calc(var(--reading-size) - 2px);line-height:1.7;color:var(--muted);margin:14px 0 0}.challenge{display:flex;gap:14px;align-items:start;margin:18px 0 16px}.step-marker{display:flex;justify-content:center;align-items:center;width:28px;height:28px;background:var(--accent);border-radius:50%;color:white;font-size:14px;flex-shrink:0}.challenge>div{min-width:0;flex:1}.challenge h2{font-size:17px;margin:3px 0 8px;letter-spacing:-.25px}.challenge p{font-size:var(--reading-size);line-height:1.7;margin:0;color:var(--muted);white-space:pre-line}.challenge code{font:14px/1.7 var(--mono);display:block;white-space:pre-wrap;overflow-wrap:anywhere;color:var(--accent);background:#f0ecff;padding:10px 13px;border-radius:5px;margin-top:12px}.practice-workspace{border:1px solid #c4c2ce;border-radius:8px;overflow:hidden}.practice-tabs{display:flex;align-items:center;gap:20px;background:#f8f6ff;border-bottom:1px solid #c4c2ce;padding:0 15px}.practice-tabs button{border:0;border-bottom:2px solid transparent;background:transparent;padding:13px 2px;color:var(--muted);font-size:13px;font-weight:600;min-height:44px}.practice-tabs button[aria-selected=true]{border-color:var(--accent);color:var(--accent)}.practice-caption{font-size:10px;color:var(--muted);margin-left:auto}.editor-panel{padding:18px}.panel-heading{display:flex;justify-content:space-between;gap:10px;align-items:center;margin:0 0 14px}.panel-heading h2{font-size:14px;margin:0}.branch{font:11px var(--mono);color:var(--accent);background:var(--light);padding:4px 8px;border-radius:4px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}select{max-width:100%;padding:9px 30px 9px 10px;border:1px solid #c4c2ce;background:#fff;border-radius:5px;color:var(--ink);font-size:13px}.file-toolbar{display:flex;gap:10px;justify-content:space-between;align-items:center}.file-toolbar select{flex:1;font:13px var(--mono)}.dirty{font-size:11px;color:#875023}.file-status{display:flex;gap:6px;flex-wrap:wrap;min-height:43px;align-items:center;font-size:11px}.status-badge{padding:4px 6px;background:#f1eee4;color:#705324;border-radius:3px}.status-badge.staged{background:#e6f0e6;color:#355d38}.editor{width:100%;display:block;resize:vertical;height:210px;min-height:170px;max-height:65vh;background:#fff;color:var(--ink);border:1px solid #b8b4c6;border-radius:5px;padding:14px;font:calc(var(--reading-size) - 1px)/1.8 var(--mono);tab-size:2}.editor:disabled{background:#f4f2f7;color:#596073}.save-row{display:flex;gap:12px;align-items:center;justify-content:space-between;margin:10px 0 18px}.save-row p{font-size:11px;color:var(--muted);margin:0}.save-row .primary{flex-shrink:0}.inspector-tabs,.sidebar-tabs{display:flex;gap:22px;border-bottom:1px solid var(--line)}.inspector-tabs button,.sidebar-tabs button{border:0;border-bottom:2px solid transparent;margin-bottom:-1px;padding:12px 0;background:transparent;color:var(--muted);font-size:13px}.inspector-tabs button[aria-selected=true],.sidebar-tabs button[aria-selected=true]{color:var(--accent);font-weight:650;border-color:var(--accent)}.inspector-view{padding-top:17px;max-height:390px;overflow:auto;scrollbar-gutter:stable}.inspector-view h3{font-size:12px;color:var(--accent);margin:0 0 8px}.inspector-caption{font-size:11px;color:var(--muted);margin:0 0 14px}.file-version{border-left:2px solid #b8a5fa;padding-left:10px;margin:15px 0}.file-version pre,.diff-content,.repo-status{font:calc(var(--reading-size) - 2px)/1.7 var(--mono);white-space:pre-wrap;overflow-wrap:anywhere;margin:0;background:#f5f3fb;padding:10px;border-radius:4px}.repo-status{font-size:11px;margin-top:18px;color:var(--muted)}.diff-content{margin-bottom:20px}.empty{font-size:12px;color:var(--muted);margin:0}.commit-node{display:flex;gap:12px;padding:0 0 20px;position:relative}.commit-node:not(:last-child):before{content:'';position:absolute;left:5px;top:12px;bottom:0;width:1px;background:#c3b5f8}.commit-dot{width:11px;height:11px;border:2px solid var(--accent);border-radius:50%;margin-top:3px;flex-shrink:0;background:white;position:relative}.commit-node strong{font:11px var(--mono);color:var(--accent);overflow-wrap:anywhere}.commit-node p{margin:5px 0 0;font-size:12px;color:var(--muted);overflow-wrap:anywhere}
.terminal{background:var(--terminal);color:#f3efff;overflow:hidden;min-width:0}.terminal-header{display:flex;gap:12px;align-items:center;padding:13px 17px;border-bottom:1px solid #424860;font:11px var(--mono);color:#c5c7d3}.terminal-header>span:first-child{font-size:16px;color:#ffd300}.terminal-header>span:nth-child(2){overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.terminal-clear{margin-left:auto;background:transparent;border:0;color:#e0dcec;font-size:11px;padding:6px;min-height:32px}.output{height:120px;overflow:auto;padding:12px 18px;font:calc(var(--reading-size) - 2px)/1.7 var(--mono);scrollbar-width:thin}.output p{margin:0 0 10px;white-space:pre-wrap;overflow-wrap:anywhere}.output .welcome{color:#c5c7d3;font-size:12px}.output .entered{color:#ffd300}.output .error{color:#ffbf9e}#command-form{display:flex;align-items:center;gap:9px;padding:12px 15px;border-top:1px solid #424860}#command-form label{color:#ffd300;font:17px var(--mono)}#command{min-width:0;flex:1;background:transparent;border:0;color:#fff;outline-offset:5px;padding:7px 4px;font:14px var(--mono)}#command::placeholder{color:#bfc1d0}#execute{border:1px solid #8f77f3;background:#3a10e5;color:#fff;border-radius:5px;min-width:38px;min-height:34px}.terminal-help{display:flex;justify-content:space-between;font-size:10px;color:#c5c7d3;margin:0;padding:0 18px 13px}.terminal-note{font-size:11px;color:var(--muted);margin:0;padding:12px 15px;background:white}.terminal-note code{font-family:var(--mono)}.exercise-controls{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:20px 0}.exercise-controls>span{font-size:10px;color:var(--muted);flex:1;min-width:140px}.feedback,.hint-box,.reset-area,.file-conflict{padding:14px 16px;font-size:calc(var(--reading-size) - 1px);line-height:1.7;border-radius:6px;margin:16px 0}.feedback{background:#f7f2e6;border:1px solid #ddcfaa}.feedback.success{background:#eaf6ee;color:#17513d;border-color:#c9e4d2}.feedback strong,.hint-box strong{font-size:12px;display:block}.feedback p,.hint-box p{margin:6px 0 0;white-space:pre-line}.hint-box{background:#f7f4e9;border:1px solid #ded6b7}.hint-box .solution{font:14px/1.7 var(--mono);white-space:pre-wrap;overflow-wrap:anywhere}.next-area{display:flex;justify-content:space-between;gap:15px;align-items:center;font-size:13px;color:var(--accent);margin:18px 0}.next-area p{margin:0}.reset-line{display:flex;gap:15px;justify-content:space-between;align-items:center;border-top:1px solid var(--line);padding-top:9px;margin-top:23px}.reset-line span{font-size:10px;color:var(--muted);text-align:right}.reset-area,.file-conflict{border:1px solid #dcc4aa;background:#f8f0e6}.reset-area p,.file-conflict p{margin:0 0 10px}.reset-area .text-button{margin-left:14px}.practice-note{font-size:11px;color:var(--muted);margin:10px 0 0}.review-banner{border-left:3px solid #a07d44;background:#f6f0e3;padding:13px;margin:14px 0;font-size:12px}.review-banner p{margin:0 0 8px}.answer-form fieldset{border:0;padding:0;margin:0 0 15px}.answer-form legend{font-size:var(--reading-size);line-height:1.6;font-weight:600;margin-bottom:10px}.answer-option{display:flex;gap:10px;padding:12px 0;border-bottom:1px solid var(--line);font-size:var(--reading-size);line-height:1.6;cursor:pointer}.answer-option input{accent-color:var(--accent);margin-top:6px;flex-shrink:0}.mobile-feedback{display:none}
.learning-sidebar{min-width:0;position:sticky;top:20px}.sidebar-card{background:white;border:1px solid var(--line);border-radius:6px;padding:18px;margin-bottom:16px}.sidebar-tabs{justify-content:space-around;gap:12px;margin-bottom:24px}.progress-overview{display:flex;gap:15px;align-items:center;margin:0 0 23px}.progress-ring{position:relative;width:90px;height:90px;flex-shrink:0}.progress-ring svg{width:100%;height:100%;transform:rotate(-90deg)}.progress-ring circle{fill:none;stroke-width:9}.ring-track{stroke:#e4dfec}.ring-value{stroke:var(--accent)}.progress-ring strong{position:absolute;inset:0;display:grid;place-items:center;font-size:23px;letter-spacing:-.7px}.progress-overview h2{font-size:14px;margin:0 0 7px}.progress-overview p{font-size:11px;color:var(--muted);margin:0 0 8px}.progress-overview>div>span{font-size:10px;color:var(--muted)}.progress-facts{display:grid;grid-template-columns:1fr 1fr;padding:18px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);gap:14px;margin-bottom:22px}.progress-facts>div+div{border-left:1px solid var(--line);padding-left:14px}.progress-facts strong{display:block;font-size:19px;letter-spacing:-.3px}.progress-facts span{display:block;font-size:10px;color:var(--muted);line-height:1.5;margin-top:4px}.checklist-heading{display:flex;justify-content:space-between;gap:10px;align-items:center}.checklist-heading h3{font-size:14px;margin:0}.checklist-heading>span{font-size:10px;color:var(--muted);white-space:nowrap}.checklist-caption{font-size:11px;color:var(--muted);margin:8px 0 16px}.lesson-checklist{list-style:none;margin:0;padding:0}.lesson-checklist li{display:flex;gap:10px;align-items:start;margin-bottom:13px;font-size:12px;line-height:1.6;color:var(--muted)}.check-status{width:15px;height:15px;border:1px solid #898c9b;border-radius:4px;display:flex;justify-content:center;align-items:center;flex-shrink:0;margin-top:2px;font-size:10px}.lesson-checklist .is-complete .check-status{background:#19624d;border-color:#19624d;color:white}.lesson-checklist .is-current{color:var(--accent);font-weight:600}.verification-note{font-size:10px;color:var(--muted);border-top:1px solid var(--line);padding-top:14px;margin:16px 0 0}.guidance-card h3{margin:10px 0;font-size:17px}.guidance-card p{font-size:12px;color:var(--muted);margin:0 0 17px}.guidance-card .secondary{font-size:12px;width:100%}.glossary summary{font-size:12px;color:var(--accent);cursor:pointer}.glossary dl{margin:15px 0 0}.glossary dt{font-weight:650;font-size:14px;color:var(--accent);margin-top:15px}.glossary dd{margin:5px 0;font-size:14px;line-height:1.75;color:var(--muted)}#concepts-panel h2{font-size:17px;margin:0 0 20px}#concepts-empty{font-size:13px;color:var(--muted)}.simulator{display:block;text-decoration:none;color:var(--accent);font-size:12px;padding:4px 18px}.simulator small{display:block;margin-top:7px;color:var(--muted);font-size:10px;line-height:1.5}.connection-error{position:fixed;bottom:18px;left:18px;right:18px;background:#fbefe5;color:#743b24;border:1px solid #d7ac8c;border-radius:8px;z-index:4;padding:15px;display:flex;gap:20px;align-items:center;justify-content:space-between;font-size:13px}.connection-error button{border:1px solid #996746;color:#743b24;background:white;padding:8px 12px;border-radius:5px}

.brand-label{font-size:9px;letter-spacing:1px;font-weight:700;background:#ffd300;padding:4px 5px;border-radius:2px;align-self:center;line-height:1.3}.continue-panel{display:flex;align-items:center;justify-content:space-between;gap:30px;border:1px solid #b8b4c6;border-left:5px solid var(--accent);border-radius:6px;background:var(--white);padding:24px 27px;margin-bottom:30px}.continue-content{min-width:0}.continue-panel h2{font-size:24px;letter-spacing:-.6px;margin:8px 0 10px}.continue-panel p{font-size:15px;color:var(--muted);margin:0 0 12px;max-width:720px}.continue-position{font-size:12px;line-height:1.6;color:var(--muted)}.continue-panel>.primary{flex-shrink:0;min-width:174px;min-height:44px}.catalog-filters{display:flex;gap:24px;border-bottom:1px solid #b8b4c6;margin-bottom:22px}.catalog-filters button{display:flex;gap:8px;align-items:center;min-height:46px;border:0;border-bottom:3px solid transparent;padding:8px 2px;background:transparent;color:var(--muted);font-size:14px}.catalog-filters button[aria-pressed=true]{color:var(--accent);border-bottom-color:var(--accent);font-weight:650}.catalog-filters span{font-size:11px;background:#f0ecff;color:var(--ink);border-radius:3px;padding:2px 6px}.course-card-footer{display:flex;justify-content:space-between;gap:15px;align-items:center;border-top:1px solid var(--line);padding-top:18px;margin-top:22px;font-size:12px;color:var(--muted)}.course-card-footer .secondary{flex-shrink:0}.catalog-empty p{margin:0 0 16px}.lesson-surface h1{font-size:clamp(28px,2.2vw,36px);margin:10px 0 14px}.home-path .path-complete .path-number{background:#19624d;border-color:#19624d}.terminal :focus-visible{outline-color:#ffd300}.practice-workspace,.answer-form{scroll-margin-top:20px}#go-practice{color:var(--accent);font-weight:650}.eyebrow{font-size:11px}.progress-overview p,.progress-overview>div>span,.progress-facts span,.verification-note,.checklist-caption{font-size:12px}.outline-module summary small,.index-note,.practice-note,.simulator small{font-size:11px}
@media(hover:hover) and (pointer:fine){.primary:hover:not(:disabled){background:#2e0cbb}.secondary:hover:not(:disabled),.font-controls button:hover{background:var(--light)}.outline-step:hover:not(:disabled){background:var(--light)}.text-button:hover,.simulator:hover{text-decoration:underline}.main-nav a:hover{color:var(--accent)}}
@media(min-width:1600px){.course-shell{grid-template-columns:300px minmax(0,1fr) 340px;gap:25px;padding:25px 35px}.course-shell.index-collapsed{grid-template-columns:minmax(0,1fr) 340px}.lesson-surface{padding:25px 38px}.sidebar-card{padding:22px}.course-index{padding-right:15px}.output{height:140px}}
@media(max-width:1200px){.course-shell{grid-template-columns:230px minmax(0,1fr);gap:17px;padding:18px}.course-shell.index-collapsed{grid-template-columns:minmax(0,1fr)}.learning-sidebar{grid-column:2;position:static;display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:16px}.index-collapsed .learning-sidebar{grid-column:1}.learning-sidebar .sidebar-card{margin:0}.learning-sidebar .simulator{grid-column:2}.lesson-surface{padding:20px 25px}.main-nav{gap:18px}.top{gap:20px}.home-label{display:none}}
@media(max-width:760px){.top{padding:12px 18px;gap:16px;min-height:70px;flex-wrap:wrap}.brand{font-size:22px}.local{display:none}.main-nav{margin-left:0;gap:18px}.main-nav a{font-size:12px}.font-controls{gap:0}.font-controls button{min-width:30px}.home-view{padding:35px 20px}.home-heading{padding-bottom:29px}.home-heading p{font-size:14px}.catalog-heading{align-items:start;flex-direction:column;gap:16px}.catalog-search{width:100%}.catalog-layout{grid-template-columns:minmax(0,1fr)}.course-card-body{padding:24px}.course-cover{padding:20px 24px;min-height:112px}.course-symbol{font-size:40px;letter-spacing:-2px;right:23px;top:20px}.course-cover p{font-size:12px;max-width:75%}.home-summary{padding:24px}.course-shell,.course-shell.index-collapsed{grid-template-columns:minmax(0,1fr);padding:12px;gap:12px}.course-index{position:static;max-height:none;padding:17px;background:white;border:1px solid var(--line);border-radius:9px}.course-outline{max-height:340px;overflow:auto}.index-note{margin-bottom:0}.lesson-surface{padding:16px 18px}.lesson-toolbar{gap:0;flex-wrap:wrap}.lesson-navigation{width:100%;justify-content:space-between}.lesson-navigation{gap:14px}.index-toggle{font-size:11px}.lesson-navigation .text-button{font-size:11px}.lesson-navigation .primary{font-size:11px;padding:8px 10px}.lesson-context{margin:8px 0 14px}.learning-goal{padding:16px;gap:12px}.learning-goal h2{font-size:14px}.explanation{line-height:1.75}.command-guide dl{gap:10px 12px;grid-template-columns:minmax(0,1fr)}.command-guide dt{justify-self:start}.command-guide dd{padding-left:4px}.challenge{gap:12px}.challenge h2{font-size:16px}.practice-tabs{gap:20px;padding:0 13px}.practice-caption{display:none}.editor-panel{padding:13px}.exercise-controls>span{flex-basis:100%}.output{height:120px}.terminal-header{padding:12px 13px}.terminal-help{font-size:9px}.next-area{flex-wrap:wrap}.learning-sidebar,.index-collapsed .learning-sidebar{grid-column:1;grid-template-columns:minmax(0,1fr)}.learning-sidebar .simulator{grid-column:1}.progress-overview{justify-content:center}.progress-ring{width:100px;height:100px}.lesson-checklist{columns:2;column-gap:18px}.lesson-checklist li{break-inside:avoid}.connection-error{left:10px;right:10px;bottom:10px;gap:12px}.connection-error button{flex-shrink:0}}
@media(max-width:380px){.top{gap:11px}.brand{font-size:22px;gap:7px}.main-nav{gap:12px}.font-controls button{min-width:26px}.lesson-navigation{gap:10px}.index-toggle span{max-width:65px;line-height:1.5}.lesson-checklist{columns:1}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation:none!important;transition:none!important}}

.primary{text-decoration:none;display:inline-block;text-align:center}.text-link{color:var(--accent);font-size:13px;line-height:1.6;text-underline-offset:3px}.home-certifications{margin-top:38px;padding-top:28px;border-top:1px solid var(--line)}.certification-card{display:grid;grid-template-columns:120px minmax(0,1fr) auto;gap:25px;align-items:center;padding:26px;border:1px solid #b8b4c6;border-radius:6px;background:white}.certification-provider{font:700 34px/1.2 var(--mono);letter-spacing:1px}.certification-provider span{display:block;font:9px/1.6 'Segoe UI',sans-serif;letter-spacing:.6px;margin-top:10px;color:var(--muted)}.certification-card h3{font-size:21px;letter-spacing:-.4px;margin:0 0 9px}.certification-card p{font-size:14px;color:var(--muted);margin:0 0 8px}.certification-card .certification-status{font-size:12px;color:var(--accent);margin:0}.certification-view{padding:32px 28px 45px}.certification-detail{max-width:1100px;margin:0 auto}.certification-eyebrow{display:block;margin:26px 0 10px}.certification-detail>p{font-size:17px;color:var(--muted);max-width:900px}.certification-facts{display:flex;gap:20px;flex-wrap:wrap;font-size:13px;margin:22px 0}.certification-notice{border-left:3px solid var(--accent);padding:18px 22px;background:var(--white);margin:25px 0 35px;border-radius:4px;font-size:14px}.certification-notice p{color:var(--muted);margin:8px 0 12px}.certification-course-heading{display:flex;justify-content:space-between;align-items:center;gap:18px}.certification-course-heading h2{font-size:24px;letter-spacing:-.5px}.certification-caption{font-size:13px;color:var(--muted)}.cert-course{border:1px solid #b8b4c6;border-radius:6px;margin:14px 0;background:var(--white);overflow:hidden}.cert-course>summary{display:flex;align-items:center;gap:15px;padding:20px;cursor:pointer;list-style:none}.cert-course>summary:after{content:'+';font-size:24px;color:var(--accent);margin-left:8px}.cert-course[open]>summary:after{content:'−'}.cert-course-number{font:14px var(--mono);color:var(--accent);width:30px;flex-shrink:0}.cert-course-name{flex:1}.cert-course-name strong{display:block;font-size:16px;line-height:1.5}.cert-course-name small{display:block;font-size:12px;color:var(--muted);margin-top:5px}.cert-course>summary .tag{flex-shrink:0}.cert-course>summary .available{background:var(--accent);color:white}.cert-course-body{border-top:1px solid var(--line);padding:20px 30px 24px 65px}.cert-course-body .official-title{font-size:12px;color:var(--muted);margin:0 0 20px}.cert-course-body h3{font-size:15px;margin:0 0 13px}.cert-course-body>ul{padding-left:20px;margin:0 0 25px}.cert-course-body>ul>li{font-size:15px;line-height:1.8;margin:7px 0}.cert-course-body .skill-list{list-style:none;padding:0;display:flex;flex-wrap:wrap;gap:7px}.cert-course-body .skill-list li{font-size:12px;line-height:1.5;background:var(--light);color:var(--ink);padding:4px 8px;border-radius:3px;margin:0}.cert-course-actions{display:flex;gap:15px;align-items:center;flex-wrap:wrap}.cert-course-actions p{font-size:13px;color:var(--muted);flex:1;min-width:200px;margin:0}.cert-course-actions .text-link{flex-basis:100%;margin-top:6px}.study-top{display:flex;justify-content:space-between;align-items:center;gap:20px;margin:0 0 25px}.study-top>span{font-size:11px;color:var(--muted)}.study-shell{display:grid;grid-template-columns:250px minmax(0,1fr) 270px;gap:22px;align-items:start}.study-shell.study-index-collapsed{grid-template-columns:minmax(0,1fr) 270px}.study-index{position:sticky;top:20px;max-height:calc(100vh - 40px);overflow:auto;padding:10px;scrollbar-width:thin}.study-index>h2{font-size:19px;margin:0 0 20px}.study-index>p{font-size:12px;color:var(--muted)}.study-index .outline-module summary{font-size:12px}.study-index .outline-module summary small{margin-left:auto}.study-support{position:sticky;top:20px;padding:23px}.study-support h2{font-size:20px;letter-spacing:-.4px;margin:11px 0}.study-support h3{font-size:14px;margin:25px 0 9px}.study-support p{font-size:14px;color:var(--muted)}.study-answer-form{margin-top:28px}.study-answer-form fieldset{border:0;margin:0 0 20px;padding:0;min-width:0}.study-answer-form legend{font-size:var(--reading-size);line-height:1.7;font-weight:600;margin-bottom:12px}.study-plan-field{display:block;margin:20px 0 10px;font-size:15px}.study-plan-field strong{display:block}.study-plan-field small{display:block;margin-top:6px;color:var(--muted);font-size:13px;line-height:1.7}#study-options textarea{width:100%;resize:vertical;min-height:130px;padding:14px;border:1px solid #b8b4c6;border-radius:4px;font:calc(var(--reading-size) - 1px)/1.7 'Segoe UI',sans-serif;background:white;color:var(--ink)}#study-options textarea:disabled{background:#f4f2f7}#study-options input{accent-color:var(--accent)}.study-lesson .exercise-controls>span{font-size:12px}
@media(max-width:1200px){.study-shell{grid-template-columns:225px minmax(0,1fr)}.study-shell.study-index-collapsed{grid-template-columns:minmax(0,1fr)}.study-support{grid-column:2;position:static}.study-index-collapsed .study-support{grid-column:1}.certification-card{grid-template-columns:90px minmax(0,1fr)}.certification-card>.primary{grid-column:2;justify-self:start}}
@media(max-width:760px){.home-certifications{margin-top:30px}.certification-card{grid-template-columns:minmax(0,1fr);gap:20px;padding:23px}.certification-provider{font-size:26px;display:flex;gap:16px;align-items:center}.certification-provider span{margin:0}.certification-card>.primary{grid-column:1;justify-self:stretch}.certification-view{padding:25px 14px}.certification-detail>p{font-size:15px}.certification-facts{gap:12px;font-size:12px}.certification-course-heading{align-items:stretch;flex-direction:column;gap:10px}.certification-course-heading h2{margin:0}.certification-course-heading button{text-align:center}.cert-course>summary{padding:16px;gap:9px;flex-wrap:wrap}.cert-course-number{width:22px}.cert-course-name{flex-basis:calc(100% - 70px)}.cert-course-name strong{font-size:14px}.cert-course>summary .tag{margin-left:31px}.cert-course>summary:after{margin-left:auto}.cert-course-body{padding:19px}.cert-course-body>ul>li{font-size:14px}.cert-course-actions{align-items:stretch;flex-direction:column}.cert-course-actions .primary,.cert-course-actions .secondary{text-align:center}.cert-course-actions p{min-width:0}.study-top{align-items:start;flex-direction:column;gap:9px}.study-shell,.study-shell.study-index-collapsed{grid-template-columns:minmax(0,1fr);gap:15px}.study-index{position:static;max-height:370px;background:white;border:1px solid var(--line);border-radius:6px;padding:18px}.study-support,.study-index-collapsed .study-support{grid-column:1}.study-support{position:static}.study-lesson .lesson-toolbar{justify-content:space-between;gap:12px}.main-nav{gap:17px}.main-nav a{font-size:12px}.certification-card h3{font-size:20px}.home-certifications .catalog-heading{gap:8px}.study-answer-form legend{font-size:var(--reading-size)}}

@media(max-width:760px){.continue-panel{align-items:stretch;flex-direction:column;padding:21px;gap:18px}.continue-panel>.primary{width:100%}.continue-panel h2{font-size:22px}.catalog-filters{gap:17px}.catalog-filters button{font-size:12px;gap:6px}.course-card-footer{align-items:stretch;flex-direction:column}.course-card-footer .secondary{text-align:center}.brand-label{font-size:8px}.top{column-gap:14px;row-gap:2px}.main-nav{order:3;width:100%}.font-controls{margin-left:auto}.learning-goal{margin:18px 0}.continue-position{display:block}.lesson-navigation{gap:10px}}
#study-explanation{white-space:pre-line}.study-submit-row{display:flex;gap:12px;align-items:center;flex-wrap:wrap}.study-save-status{font-size:13px;min-height:22px;color:var(--muted);margin:10px 0}.study-lab-label{display:flex;gap:12px;justify-content:space-between;background:var(--ink);color:#f5f3ff;padding:12px 15px;border-radius:5px 5px 0 0;font:11px/1.6 var(--mono)}#study-options #study-editor{border-radius:0 0 5px 5px;border:1px solid var(--ink);background:#10162f;color:#fff0e5;font:14px/1.8 var(--mono);min-height:250px;tab-size:4;white-space:pre;overflow:auto}#study-options #study-editor:disabled{background:#232941;color:#fff0e5;opacity:1}.study-check-notice{font-size:12px;color:var(--muted);line-height:1.7}.study-criteria{padding-left:22px;font-size:14px;line-height:1.8;color:var(--ink)}.study-example-box{margin:22px 0;border:1px solid var(--line);padding:18px;background:var(--white)}.study-example-box>p{font-size:13px;color:var(--muted);line-height:1.7}.study-example-box pre{font:13px/1.8 var(--mono);overflow:auto;max-height:420px;padding:16px;background:var(--ink);color:#fff0e5;tab-size:4;border-radius:4px}.study-lesson .exercise-controls{flex-wrap:wrap}.study-support #study-scope{font-size:12px}.feedback ul{padding-left:22px;font-size:14px;line-height:1.8}
@media(max-width:760px){.study-submit-row{align-items:stretch;flex-direction:column}.study-lab-label{font-size:10px;flex-wrap:wrap}#study-options #study-editor{font-size:13px}.study-example-box{padding:14px}.study-top #study-course-name{line-height:1.6}}
.study-progress-percent{font:700 38px/1.4 'Segoe UI',sans-serif;letter-spacing:-1px;display:block;margin:14px 0 8px}.study-support progress{width:100%}.study-method{margin:23px 0;border-top:1px solid var(--line);padding-top:18px;font-size:13px}.study-method summary{cursor:pointer;font-weight:600;line-height:1.7}.study-method p{font-size:12px}.study-support #study-export-status{font-size:12px;overflow-wrap:anywhere}.study-python-link{display:inline-block;margin:14px 0 0}.study-plan-field small{white-space:normal}
.certification-reference{margin:22px 0 30px;font-size:13px;color:var(--muted)}.certification-reference summary{cursor:pointer;text-decoration:underline;text-underline-offset:4px}.certification-reference p{max-width:800px;line-height:1.8}.teaching-lead{font-size:var(--reading-size);line-height:1.8;margin:18px 0;color:var(--muted)}.teaching-goals{padding:16px 18px;border-left:3px solid var(--accent);background:var(--light);font-size:14px;margin:22px 0}.teaching-goals summary{font-weight:600;cursor:pointer}.teaching-goals li,.teaching-goals p{line-height:1.8}.teaching-parts{display:grid;gap:8px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:18px 0;margin:24px 0 30px}.teaching-parts button{border:0;background:transparent;color:var(--muted);text-align:left;padding:8px 12px;font:13px/1.65 'Segoe UI',sans-serif;display:flex;gap:12px;align-items:center;cursor:pointer;border-radius:3px}.teaching-parts button span{font:11px var(--mono);flex-shrink:0}.teaching-parts button[aria-current]{background:var(--light);color:var(--accent);font-weight:600}.teaching-content h2{font-size:25px;line-height:1.4;letter-spacing:-.5px;margin:0 0 20px}.teaching-content>p,.teaching-example p,.teaching-takeaways p{font-size:var(--reading-size);line-height:1.9;white-space:pre-line;margin:16px 0}.teaching-example{margin:30px 0;padding:24px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.teaching-example h3,.teaching-takeaways h3{font-size:20px;line-height:1.5;margin:13px 0 20px}.teaching-example ol{padding-left:26px}.teaching-example li{padding-left:8px;margin:22px 0}.teaching-example li::marker{color:var(--accent);font-weight:700}.teaching-example h4{font-size:16px;line-height:1.6;margin:0 0 8px}.teaching-example pre{padding:18px;background:var(--ink);color:#fff0e5;font:13px/1.8 var(--mono);overflow:auto;max-width:100%;tab-size:4;border-radius:4px}.teaching-example pre code{white-space:pre}.teaching-output{border-left:3px solid #22634e;padding:14px 16px;background:#eef6f1;margin-top:14px}.teaching-output strong{font-size:12px;color:#19503c}.teaching-output pre{color:#173b2d;background:transparent;padding:6px 0;margin:0;white-space:pre-wrap;overflow-wrap:anywhere}.teaching-conclusion{font-weight:600}.teaching-flow{display:flex;flex-wrap:wrap;gap:8px;padding:0;margin:24px 0;list-style:none}.teaching-flow li{font-size:13px;line-height:1.65;padding:9px 13px;border:1px solid var(--line);background:var(--white)}.teaching-flow li:not(:last-child):after{content:' →';color:var(--accent);margin-left:8px}.teaching-table-wrap{max-width:100%;overflow:auto;margin:28px 0}.teaching-table-wrap table{width:100%;border-collapse:collapse;font-size:14px;line-height:1.8;min-width:330px}.teaching-table-wrap th{text-align:left;background:var(--light);font-weight:600}.teaching-table-wrap td,.teaching-table-wrap th{border-bottom:1px solid var(--line);padding:13px;vertical-align:top}.teaching-takeaways{padding:20px 0}.teaching-takeaways li{font-size:var(--reading-size);line-height:1.8;margin:10px 0}.teaching-navigation{display:flex;align-items:center;flex-wrap:wrap;gap:16px;border-top:1px solid var(--line);padding-top:24px;margin-top:28px}.teaching-navigation>span{font-size:12px;color:var(--muted);margin-right:auto}.teaching-glossary h3{margin-top:26px}.teaching-glossary dt{font-size:13px;font-weight:600;margin:17px 0 6px}.teaching-glossary dd{font-size:12px;line-height:1.8;color:var(--muted);margin:0}.teaching-sources{margin-top:24px;font-size:12px;line-height:1.9}.teaching-sources summary{font-weight:600;cursor:pointer}.teaching-sources ul{padding-left:17px}.teaching-sources a{color:var(--accent);text-underline-offset:3px}.study-learning-count{font-size:14px!important;font-weight:600;color:var(--ink)!important}.study-practice-heading{display:block;margin:24px 0 14px;font-size:11px;font-weight:600;color:var(--accent);letter-spacing:.7px}.outline-class{margin:8px 0 15px!important;font-weight:600!important}.cert-course-lessons{padding-left:20px;margin:20px 0 24px;font-size:14px;line-height:1.9}.cert-course-lessons li{margin:8px 0}.study-lesson{min-width:0}
@media(max-width:760px){.teaching-parts{margin:20px 0}.teaching-content h2{font-size:22px}.teaching-example li{padding-left:4px}.teaching-example ol{padding-left:20px}.teaching-example pre{font-size:12px;padding:13px}.teaching-navigation{align-items:stretch;flex-direction:column}.teaching-navigation>span{text-align:center;margin:0}.teaching-table-wrap table{font-size:13px}.teaching-goals{padding:14px}.teaching-example h3{font-size:18px}}
.teaching-plan{font-size:13px;margin:20px 0 28px;border-bottom:1px solid var(--line);padding-bottom:17px}.teaching-plan>summary{font-weight:600;cursor:pointer;color:var(--accent);line-height:1.8}.teaching-plan .teaching-parts{margin-bottom:0;border-bottom:0;padding-bottom:0}.teaching-goals{margin-bottom:16px}.teaching-glossary{margin-top:20px}.outline-practice>summary{font-size:11px!important;color:var(--muted)}.study-lesson .lesson-toolbar{flex-wrap:wrap}.study-support{max-height:calc(100vh - 40px);overflow:auto;scrollbar-width:thin}
@media(max-width:1200px){.study-support{max-height:none;overflow:visible}}@media(max-width:760px){.teaching-plan{margin:18px 0 24px}.teaching-content>p{line-height:1.8}}
:root { --route-border: #dedbd3; }
.devops-path { margin: 0 0 28px; padding: 26px; border: 1px solid var(--route-border); background: #fffaf0; }
.path-heading,.path-current { display:flex; align-items:center; justify-content:space-between; gap:20px; }
.path-heading h2 { margin:8px 0; font-size:clamp(1.4rem,2.5vw,2rem); }
.path-heading p,.path-note { max-width:75ch; line-height:1.6; }
.path-current { margin:20px 0; padding:20px; background:#fff; border-left:4px solid #5131a8; }
.path-current h3 { margin:6px 0; }
.path-current small { font-weight:700; letter-spacing:.06em; }
.path-details summary { cursor:pointer; padding:10px 0; }
.path-stages { padding-left:22px; }
.path-stages li { margin:10px 0; }
.path-stages small { display:block; margin:4px 0; color:#4e4a57; }
.path-stages a { color:#43258a; text-underline-offset:3px; }
.path-note { font-size:.9rem; color:#4e4a57; }
@media(max-width:760px) { .devops-path { padding:18px; } .path-heading,.path-current { align-items:flex-start; flex-direction:column; } .path-current .primary { width:100%; text-align:center; } }