.tutorial-hub{max-width:1240px;margin:0 auto;padding:56px clamp(18px,4vw,64px) 110px;color:var(--text)}.tutorial-hub-hero{display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:42px;align-items:end;padding:34px 36px;border:1px solid var(--line);border-radius:24px;background:radial-gradient(circle at 88% 12%,rgba(21,94,239,.13),transparent 34%),var(--surface);box-shadow:0 24px 70px #10223814}.tutorial-hub-hero h1{max-width:760px;margin:8px 0 14px;font-size:clamp(38px,5vw,68px);line-height:.98;letter-spacing:-.065em}.tutorial-hub-hero h1 span{color:var(--cyan)}.tutorial-hub-hero p:last-child{max-width:690px;margin:0;color:var(--muted);font-size:15px;line-height:1.7}.tutorial-hub-stat{display:grid;gap:5px;justify-items:end;padding-left:28px;border-left:1px solid var(--line)}.tutorial-hub-stat strong{font:800 58px/1 DM Mono;color:var(--accent)}.tutorial-hub-stat span{max-width:130px;text-align:right;color:var(--muted);font-size:11px;line-height:1.5}.tutorial-workspace{display:grid;grid-template-columns:330px minmax(0,1fr);gap:18px;margin-top:22px;align-items:start}.tutorial-library,.tutorial-runner{border:1px solid var(--line);border-radius:20px;background:var(--surface);box-shadow:0 16px 45px #1022380f}.tutorial-library{position:sticky;top:92px;overflow:hidden}.tutorial-library-head{padding:18px 20px;border-bottom:1px solid var(--line);background:var(--surface-2)}.tutorial-library-head span,.tutorial-library-head small{display:block}.tutorial-library-head span{font:800 10px DM Mono;letter-spacing:.1em;color:var(--text)}.tutorial-library-head small{margin-top:4px;color:var(--muted);font-size:10px}.tutorial-library>button{display:grid;grid-template-columns:42px 1fr;gap:11px;width:100%;padding:16px 18px;border:0;border-bottom:1px solid var(--line);background:transparent;color:var(--text);text-align:left}.tutorial-library>button:hover{background:var(--surface-2)}.tutorial-library>button.active{background:var(--accent-soft)}.tutorial-library-icon{display:grid;place-items:center;width:42px;height:42px;border-radius:12px;background:var(--surface-2);color:var(--accent);font:800 10px DM Mono}.tutorial-library>button.active .tutorial-library-icon{background:var(--accent);color:#fff}.tutorial-library>button strong,.tutorial-library>button small{display:block}.tutorial-library>button strong{font-size:12px;line-height:1.35}.tutorial-library>button small{margin-top:4px;color:var(--muted);font-size:9px}.tutorial-library i{display:block;height:4px;margin-top:9px;border-radius:99px;background:var(--line);overflow:hidden}.tutorial-library i b{display:block;height:100%;border-radius:inherit;background:var(--accent)}.tutorial-runner{overflow:hidden}.tutorial-runner-top{display:grid;grid-template-columns:minmax(0,1fr) 110px;gap:20px;padding:28px 30px 24px}.tutorial-badge{display:inline-flex;margin-right:6px;padding:6px 9px;border-radius:999px;background:var(--accent-soft);color:var(--accent);font:800 9px DM Mono;letter-spacing:.05em}.tutorial-badge.quiet{background:var(--surface-2);color:var(--muted)}.tutorial-runner-top h2{margin:14px 0 8px;font-size:28px;line-height:1.12;letter-spacing:-.035em}.tutorial-runner-top p{margin:0;color:var(--muted);font-size:12px;line-height:1.65}.tutorial-runner-progress{display:grid;align-content:start;justify-items:end}.tutorial-runner-progress strong{font:800 28px DM Mono;color:var(--accent)}.tutorial-runner-progress small{margin-top:3px;color:var(--muted);font-size:9px}.tutorial-stepper{display:flex;gap:0;padding:0 30px 24px;overflow:auto}.tutorial-stepper button{display:flex;align-items:center;gap:7px;min-width:max-content;padding:8px 12px;border:0;border-bottom:3px solid var(--line);background:transparent;color:var(--muted);font-size:10px}.tutorial-stepper button span{display:grid;place-items:center;width:23px;height:23px;border-radius:50%;background:var(--surface-2);font:700 9px DM Mono}.tutorial-stepper button.active{border-color:var(--accent);color:var(--accent)}.tutorial-stepper button.active span{background:var(--accent);color:#fff}.tutorial-stepper button.done{border-color:var(--green);color:var(--green)}.tutorial-stepper button.done span{background:var(--green);color:#fff}.tutorial-task-card{display:grid;grid-template-columns:68px 1fr;gap:20px;margin:0 30px;padding:24px;border:1px solid var(--line);border-radius:16px;background:var(--surface-2)}.tutorial-task-number{font:800 30px DM Mono;color:var(--accent)}.tutorial-task-content>small{font:800 9px DM Mono;letter-spacing:.1em;color:var(--soft)}.tutorial-task-content h3{margin:5px 0 8px;font-size:23px}.tutorial-goal{margin:0 0 18px;color:var(--muted);font-size:14px;line-height:1.65}.tutorial-action-box,.tutorial-check-box{padding:16px 17px;border-radius:11px;background:var(--surface)}.tutorial-action-box{border-left:4px solid var(--accent)}.tutorial-check-box{margin-top:10px;border-left:4px solid var(--green)}.tutorial-action-box span,.tutorial-check-box span{font:800 9px DM Mono;letter-spacing:.08em}.tutorial-action-box span{color:var(--accent)}.tutorial-check-box span{color:var(--green)}.tutorial-action-box p,.tutorial-check-box p{margin:6px 0 0;font-size:13px;line-height:1.65}.tutorial-evidence{display:grid;gap:7px;margin:12px 0;color:var(--muted);font-size:10px}.tutorial-evidence input{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:9px;background:var(--surface);color:var(--text)}.tutorial-runner-actions{display:flex;justify-content:space-between;gap:12px;padding:20px 30px}.tutorial-related{display:flex;align-items:center;gap:10px;padding:16px 30px;border-top:1px solid var(--line);background:var(--surface-2);font-size:10px}.tutorial-related span{color:var(--muted)}.tutorial-related a{color:var(--accent);font-weight:700;text-decoration:none}:root[data-theme=dark] .tutorial-library,:root[data-theme=dark] .tutorial-runner,:root[data-theme=dark] .tutorial-hub-hero{box-shadow:none}@media (max-width:900px){.tutorial-workspace{grid-template-columns:1fr}.tutorial-library{position:static}.tutorial-library>button{grid-template-columns:38px 1fr}.tutorial-library-icon{width:38px;height:38px}.tutorial-library{display:grid;grid-template-columns:1fr 1fr}.tutorial-library-head{grid-column:1/-1}}@media (max-width:760px){.tutorial-hub{padding:28px 16px 95px}.tutorial-hub-hero{grid-template-columns:1fr;padding:24px 20px;border-radius:18px}.tutorial-hub-stat{justify-items:start;padding:16px 0 0;border-left:0;border-top:1px solid var(--line)}.tutorial-hub-stat strong{font-size:40px}.tutorial-hub-stat span{text-align:left}.tutorial-library{grid-template-columns:1fr}.tutorial-runner-top{grid-template-columns:1fr;padding:22px 18px 18px}.tutorial-runner-progress{justify-items:start}.tutorial-stepper{padding:0 18px 18px}.tutorial-task-card{grid-template-columns:1fr;margin:0 18px;padding:19px}.tutorial-task-number{font-size:21px}.tutorial-runner-actions{padding:18px;flex-direction:column}.tutorial-runner-actions .button{width:100%;justify-content:center}.tutorial-related{padding:14px 18px;flex-wrap:wrap}}.practice-page{max-width:1200px;margin:auto;padding:48px clamp(20px,4vw,64px) 100px;font-size:17px;line-height:1.7;color:var(--text)}.practice-page h1{font-size:clamp(32px,4vw,52px);line-height:1.15;letter-spacing:-.04em}.practice-page h2{font-size:28px;line-height:1.3;margin-top:42px}.practice-page h3{font-size:21px;line-height:1.4}.practice-page h4{font-size:18px;margin-bottom:8px}.practice-page p,.practice-page li{max-width:820px}.practice-page a{color:var(--accent)}.practice-links{display:flex;flex-wrap:wrap;gap:20px;margin:28px 0}.scenario-list{display:grid;grid-template-columns:1fr 1fr;gap:0 36px;margin-top:42px}.scenario-list>button{display:flex;flex-direction:column;gap:9px;text-align:left;background:transparent;color:var(--text);border-bottom:1px solid var(--line);padding:25px 0}.scenario-list strong{font-size:20px}.scenario-list span,.scenario-list small{font-size:15px;color:var(--muted)}.scenario-list>button:hover strong{color:var(--accent)}.exam-topology{border-block:1px solid var(--line);padding:22px 0;font-family:ui-monospace,monospace;white-space:normal;overflow-wrap:anywhere}.practice-page input:not([type=checkbox]),.practice-page select,.practice-page textarea{border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:8px;padding:12px;max-width:100%;font-size:16px}.practice-page textarea{display:block;width:100%;min-height:100px;resize:vertical;margin:8px 0 22px}.practice-page label{font-size:16px}.practice-page button{min-height:44px}.practice-start{display:flex;gap:20px;flex-wrap:wrap;align-items:end;margin:32px 0}.practice-start label{display:flex;flex-direction:column}.practice-timer{position:sticky;top:76px;z-index:5;background:var(--surface);border-block:1px solid var(--line);padding:15px 20px;display:flex;gap:20px;align-items:center;margin:32px 0}.practice-timer strong{font-size:24px;white-space:nowrap}.practice-timer span{font-size:14px;color:var(--muted)}.criteria>article{padding:14px 0 28px;border-bottom:1px solid var(--line)}.criteria h3 small{font-size:15px;color:var(--accent);white-space:nowrap}.criterion-solution{background:var(--surface-2);border-left:4px solid var(--accent);padding:20px}.score-check{display:flex;gap:12px;align-items:center}.score-check input{width:22px;height:22px;flex-shrink:0}.confirm-box{background:var(--surface);border:2px solid var(--accent);padding:20px;margin:20px 0}.confirm-box button{margin-right:16px;padding:10px 16px;background:var(--surface-2);border-radius:6px}.self-score{padding:22px 0}.practice-page details{margin-top:40px}.practice-page summary{cursor:pointer;min-height:44px}.checklist-row{display:flex;gap:18px;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding:16px 0}.checklist-row strong{font-weight:500}.practice-page :disabled{opacity:.65;cursor:not-allowed}.practice-page pre{white-space:pre;overflow:auto;max-width:100%;background:#102238;color:#d6e5f5;padding:20px;border-radius:10px}.practice-page input[type=checkbox]{accent-color:var(--accent)}@media (max-width:760px){.scenario-list{grid-template-columns:1fr}.practice-page{padding-top:28px}.practice-timer{top:64px;padding:12px;flex-direction:column;align-items:start;gap:3px}.checklist-row{align-items:start;flex-direction:column}.practice-page .button{font-size:15px}}.lab-stages{display:flex;flex-wrap:wrap;gap:10px;list-style:none;padding:0;margin-top:28px}.lab-stages button{padding:12px;background:var(--surface);border:1px solid var(--line);border-radius:8px}.lab-stages [aria-current=step] button{background:var(--accent);color:#fff}.vlan-editor{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-block:28px}.vlan-editor fieldset{min-width:0;border:1px solid var(--line);border-radius:10px;padding:20px}.vlan-editor label{display:flex;flex-direction:column;margin-top:8px}.practice-page label select{margin-left:12px}.practice-page input[type=checkbox]{margin-right:10px}@media (max-width:760px){.vlan-editor{grid-template-columns:1fr}}.lesson-content:has(.lesson-modes[data-mode=guided]) .lesson-reading,.lesson-content:has(.lesson-modes[data-mode=solo]) .lesson-reading{display:none}.guided-step{font-size:17px;line-height:1.75;padding:24px 0}.guided-step h2{line-height:1.3}.guided-step .button{margin:8px 10px 8px 0}.lesson-reading>h2{font-size:26px;margin-top:44px}.lesson-reading>p{font-size:17px;line-height:1.75}.lesson-modes button{min-height:44px}.lesson-reading .step p,.lesson-reading .info-block p{font-size:16px;line-height:1.7;color:var(--text)}.annotated-image{position:relative}.screenshot-trigger img{height:auto}.image-hotspot{position:absolute;background:transparent;border:3px solid #d73846;border-radius:4px;min-height:0!important}.image-hotspot b{position:absolute;left:-12px;top:-14px;background:#b91c2c;color:#fff;border-radius:50%;width:25px;height:25px;display:grid;place-items:center}.image-hotspot:focus-visible{outline:3px solid #0077ee}.image-dialog{max-width:95vw;width:1100px;max-height:94vh;border:1px solid var(--line);border-radius:14px;background:var(--surface);color:var(--text);padding:24px}.image-dialog::backdrop{background:#061321d9}.image-dialog button{padding:12px;border-radius:8px;background:var(--surface-2);min-height:44px}.image-scroll{overflow:auto;max-height:70vh}.image-scroll img{display:block}.question-grid{display:flex;flex-wrap:wrap;gap:8px;margin:24px 0}.question-grid button{min-width:46px;min-height:44px;padding:8px;background:var(--surface-2);border:1px solid var(--line);border-radius:6px}.question-grid [aria-current=step]{border:2px solid var(--accent)}.test-answers label{display:flex;align-items:center;gap:14px;padding:18px;border-bottom:1px solid var(--line);cursor:pointer}.test-answers input{width:22px;height:22px}.practice-page .criterion-solution{margin-top:24px}.glossary-entry{padding:20px 0;border-bottom:1px solid var(--line)}.glossary-entry dd{margin:10px 0 0}.glossary-entry .button{margin:4px;font-size:14px}.wire-editor{display:grid;grid-template-columns:repeat(8,1fr);gap:8px;margin:28px 0}.wire-editor button{background:var(--surface);padding:14px 8px;min-width:0;border-radius:6px;overflow-wrap:anywhere}.wire-editor strong,.wire-editor span{display:block;font-size:14px}.wire-editor [aria-pressed=true]{outline:3px solid var(--accent)}.channel-chart{height:165px;position:relative;background:var(--surface-2);overflow:hidden}.channel-chart div{position:absolute;width:23.53%;background:var(--accent);padding:12px;color:#fff;border-radius:8px;font-size:13px}@media (max-width:760px){.wire-editor{grid-template-columns:repeat(4,1fr)}}.tutorial-player{margin:30px 0 38px;border:1px solid var(--line);border-radius:18px;background:var(--surface);overflow:hidden;box-shadow:0 18px 50px #10223812}.tutorial-launch{display:flex;justify-content:space-between;align-items:center;gap:22px;padding:20px 22px;border-bottom:1px solid var(--line);background:var(--surface-2)}.tutorial-launch>div:first-child{display:grid;gap:5px}.tutorial-launch strong{font-size:14px}.tutorial-mode-buttons{display:flex;gap:6px;flex-wrap:wrap}.tutorial-mode-buttons button{min-height:38px;padding:9px 12px;border:1px solid var(--line);border-radius:9px;background:var(--surface);color:var(--muted);font-size:12px;font-weight:700}.tutorial-mode-buttons button.active{background:var(--text);border-color:var(--text);color:var(--surface)}.tutorial-overview{display:flex;align-items:end;justify-content:space-between;gap:24px;padding:28px 26px 20px}.tutorial-overview h2{margin:5px 0 6px;font-size:24px}.tutorial-overview p{margin:0;color:var(--muted);font-size:13px}.tutorial-meter{display:flex;align-items:center;gap:11px;min-width:190px}.tutorial-meter>span{height:7px;flex:1;border-radius:999px;background:var(--surface-2);overflow:hidden}.tutorial-meter i{display:block;height:100%;background:var(--accent);border-radius:inherit}.tutorial-meter b{font:700 11px DM Mono;color:var(--accent)}.tutorial-map{display:grid;grid-template-columns:repeat(4,1fr);padding:0 26px 24px}.tutorial-map button{position:relative;display:flex;align-items:center;gap:9px;text-align:left;background:transparent;color:var(--muted);min-height:46px;padding:8px;border-bottom:3px solid var(--line)}.tutorial-map button span{display:grid;place-items:center;width:25px;height:25px;border-radius:50%;background:var(--surface-2);font:700 10px DM Mono}.tutorial-map button b{font-size:12px}.tutorial-map button.active{color:var(--accent);border-color:var(--accent)}.tutorial-map button.active span{background:var(--accent);color:#fff}.tutorial-map button.done{color:var(--green);border-color:var(--green)}.tutorial-map button.done span{background:var(--green);color:#fff}.tutorial-stage{padding:26px;border-top:1px solid var(--line)}.tutorial-stage-head{display:flex;gap:14px;align-items:center;margin-bottom:23px}.tutorial-stage-head>span{display:grid;place-items:center;width:46px;height:46px;border-radius:13px;background:var(--accent-soft);color:var(--accent);font:800 14px DM Mono}.tutorial-stage-head small,.tutorial-lab-task small,.tutorial-quiz>small,.tutorial-hint small,.tutorial-notes small,.tutorial-verify strong{font:700 9px DM Mono;letter-spacing:.11em;color:var(--soft)}.tutorial-stage-head h2{margin:3px 0 0;font-size:23px}.tutorial-theory{font-size:17px!important;line-height:1.75!important;color:var(--text)!important;max-width:780px}.tutorial-objectives{display:grid;gap:8px;margin:20px 0 4px}.tutorial-objectives div{display:flex;gap:10px;align-items:flex-start;padding:10px 12px;border-radius:9px;background:var(--surface-2);font-size:13px}.tutorial-objectives span{color:var(--green);font-weight:900}.tutorial-step-card{display:grid;grid-template-columns:54px 1fr;gap:17px;padding:22px;border:1px solid var(--line);border-radius:14px;background:var(--surface-2)}.tutorial-step-count{font:800 25px DM Mono;color:var(--accent)}.tutorial-step-card h3{margin:0 0 8px;font-size:18px}.tutorial-step-card p{margin:0;font-size:15px;line-height:1.7;color:var(--text)}.tutorial-step-dots{display:flex;gap:7px;margin:18px 0}.tutorial-step-dots button{width:28px;height:7px;min-height:7px;border-radius:99px;background:var(--line)}.tutorial-step-dots button.active{background:var(--accent)}.tutorial-step-dots button.done{background:var(--green)}.tutorial-actions{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-top:22px}.tutorial-actions .button{min-height:42px}.tutorial-verify{padding:18px 20px;border-left:4px solid var(--green);border-radius:9px;background:var(--surface-2)}.tutorial-verify strong{color:var(--green)}.tutorial-verify p{margin:7px 0 0;font-size:14px;line-height:1.65}.tutorial-command-list{display:grid;gap:9px;margin:16px 0}.tutorial-command{padding:15px 17px;border-radius:10px;background:#102238;color:#dce8f2}.tutorial-command small{display:block;color:#89a7bd;font:700 9px DM Mono;text-transform:uppercase}.tutorial-command code{display:block;margin:7px 0;color:#8ee9bd;font:12px/1.5 DM Mono;white-space:pre-wrap}.tutorial-command p{margin:0;color:#b8c9d7;font-size:11px}.tutorial-notes{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:16px}.tutorial-notes aside{padding:16px;border:1px solid var(--line);border-radius:10px}.tutorial-notes aside:first-child{background:var(--accent-soft)}.tutorial-notes p{margin:7px 0 0;font-size:12px;line-height:1.6;color:var(--text)}.tutorial-lab-task{padding:20px;border:1px solid var(--line);border-radius:12px;background:var(--surface-2)}.tutorial-lab-task p{margin:7px 0 0;font-size:16px!important;line-height:1.7!important;color:var(--text)!important}.tutorial-quiz{margin-top:16px;padding:20px;border:1px solid var(--line);border-radius:12px}.tutorial-quiz h3{font-size:17px;margin:7px 0 14px}.tutorial-quiz>div{display:grid;gap:7px}.tutorial-quiz button{display:flex;align-items:center;gap:10px;text-align:left;min-height:44px;padding:10px 12px;border:1px solid var(--line);border-radius:8px;background:var(--surface);color:var(--text)}.tutorial-quiz button span{display:grid;place-items:center;width:27px;height:27px;border-radius:7px;background:var(--surface-2);font:700 10px DM Mono}.tutorial-quiz button.correct{border-color:var(--green)}.tutorial-quiz button.wrong{border-color:var(--red)}.tutorial-finish{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-top:18px;padding:18px 20px;border-radius:12px;background:var(--accent-soft)}.tutorial-finish>div{display:grid;gap:4px}.tutorial-finish small{font:700 9px DM Mono;color:var(--soft)}.tutorial-finish strong{font-size:14px}.tutorial-read-note{display:flex;gap:13px;align-items:center;padding:18px 22px;color:var(--muted)}.tutorial-read-note>span{font-size:24px;color:var(--accent)}.tutorial-read-note p{margin:0;font-size:12px}.tutorial-read-note strong{color:var(--text)}.tutorial-solo{border-top:0}.tutorial-hint{margin-top:16px;padding:16px;border-radius:10px;background:var(--accent-soft)}.tutorial-hint p{font-size:13px;margin:7px 0 0}.tutorial-solution{counter-reset:item;display:grid;gap:10px;padding:0;margin:18px 0;list-style:none}.tutorial-solution li{display:grid;gap:4px;padding:14px;border-left:3px solid var(--line);background:var(--surface-2)}.tutorial-solution b{font-size:13px}.tutorial-solution span{font-size:12px;line-height:1.6;color:var(--muted)}.course-nav-count{display:block;margin-top:7px;color:var(--soft);font:500 9px DM Mono}:root[data-theme=dark] .tutorial-player{box-shadow:none}:root[data-theme=dark] .tutorial-mode-buttons button.active{background:var(--accent);border-color:var(--accent);color:#fff}:root[data-theme=dark] .tutorial-command{background:#091522}@media (max-width:760px){.tutorial-player{margin-left:-2px;margin-right:-2px;border-radius:14px}.tutorial-launch,.tutorial-overview{display:block;padding:18px}.tutorial-mode-buttons{margin-top:14px}.tutorial-mode-buttons button{flex:1}.tutorial-meter{margin-top:16px}.tutorial-map{grid-template-columns:1fr 1fr;padding:0 18px 18px;gap:4px}.tutorial-map button{border:1px solid var(--line);border-radius:9px}.tutorial-map button.active,.tutorial-map button.done{border-width:1px}.tutorial-stage{padding:20px 18px}.tutorial-stage-head h2{font-size:20px}.tutorial-step-card{grid-template-columns:1fr;padding:18px}.tutorial-step-count{font-size:18px}.tutorial-notes{grid-template-columns:1fr}.tutorial-actions{align-items:stretch;flex-direction:column}.tutorial-actions .button{width:100%;justify-content:center}.tutorial-finish{align-items:stretch;flex-direction:column}.tutorial-finish .button{width:100%;justify-content:center}}.course-overview-page{max-width:1240px}.course-overview-lead{max-width:760px;color:var(--muted)}.course-path-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:34px}.course-path-card{border:1px solid var(--line);border-radius:15px;background:var(--surface);overflow:hidden;box-shadow:0 12px 32px #1022380d}.course-path-main,.course-path-next{width:100%;text-align:left;background:transparent;color:var(--text)}.course-path-main{padding:21px}.course-path-main h2{font-size:20px;margin:14px 0 6px}.course-path-main p{margin:0;color:var(--muted);font-size:12px}.course-path-top{display:flex;justify-content:space-between;align-items:center}.course-path-top span,.course-path-top b{font:700 10px DM Mono;color:var(--soft)}.course-path-top b{color:var(--accent)}.course-path-progress{display:block;height:6px;margin-top:17px;border-radius:999px;background:var(--surface-2);overflow:hidden}.course-path-progress i{display:block;height:100%;background:var(--accent);border-radius:inherit}.course-path-next{display:grid;grid-template-columns:auto 1fr auto;gap:10px;align-items:center;padding:14px 21px;border-top:1px solid var(--line);background:var(--surface-2)}.course-path-next span{font:700 9px DM Mono;color:var(--accent);text-transform:uppercase}.course-path-next strong{font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.course-path-next b{color:var(--accent)}.course-detail-hero{display:grid;grid-template-columns:1fr 250px;gap:28px;align-items:end;margin-top:28px;padding-bottom:26px;border-bottom:1px solid var(--line)}.course-detail-hero h1{margin:5px 0 7px}.course-detail-hero p{margin:0;color:var(--muted)}.course-detail-progress strong{display:block;text-align:right;font:800 28px DM Mono;color:var(--accent)}.course-detail-progress small{display:block;margin-top:8px;text-align:right;color:var(--muted);font-size:10px}.course-resume{display:flex;align-items:center;justify-content:space-between;gap:22px;margin:22px 0 36px;padding:20px 22px;border-radius:14px;background:var(--accent-soft)}.course-resume>div{display:grid;gap:4px}.course-resume small{font:700 9px DM Mono;color:var(--accent);letter-spacing:.08em}.course-resume strong{font-size:17px}.course-resume span{font-size:11px;color:var(--muted)}.course-modules{display:grid;gap:34px}.course-module{margin:0}.course-module-head{display:flex;align-items:center;gap:14px;margin-bottom:8px}.course-module-head>span{font:800 12px DM Mono;color:var(--accent)}.course-module-head h2{margin:0;font-size:21px}.course-module-head p{margin:2px 0 0;color:var(--muted);font-size:10px}.course-lesson-list{border-top:1px solid var(--line)}.course-lesson-row{display:grid;grid-template-columns:38px minmax(0,1fr) 110px 18px;gap:14px;align-items:center;width:100%;padding:15px 4px;border-bottom:1px solid var(--line);background:transparent;color:var(--text);text-align:left}.course-lesson-row:hover{background:var(--surface);padding-left:10px;padding-right:10px}.course-lesson-state{display:grid;place-items:center;width:30px;height:30px;border-radius:9px;background:var(--surface-2);font:700 9px DM Mono;color:var(--soft)}.course-lesson-row.done .course-lesson-state{background:var(--accent-soft);color:var(--green)}.course-lesson-copy{min-width:0}.course-lesson-copy strong,.course-lesson-copy small{display:block}.course-lesson-copy strong{font-size:13px}.course-lesson-copy small{margin-top:4px;color:var(--muted);font-size:10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.course-lesson-meta{text-align:right;color:var(--muted);font:9px/1.6 DM Mono}.course-lesson-row>b{color:var(--accent)}:root[data-theme=dark] .course-path-card{box-shadow:none}@media (max-width:760px){.course-path-grid,.course-detail-hero{grid-template-columns:1fr}.course-detail-progress strong,.course-detail-progress small{text-align:left}.course-resume{align-items:stretch;flex-direction:column}.course-resume .button{width:100%;justify-content:center}.course-lesson-row{grid-template-columns:34px minmax(0,1fr) 18px}.course-lesson-meta{grid-column:2;text-align:left}.course-lesson-copy small{white-space:normal}.course-lesson-row>b{grid-column:3;grid-row:1/3}}.student-dashboard{max-width:1240px}.dashboard-hero{display:grid;grid-template-columns:minmax(0,1fr) 190px;gap:32px;align-items:end;padding:28px 30px;border:1px solid var(--line);border-radius:22px;background:linear-gradient(120deg,var(--surface),color-mix(in srgb,var(--accent-soft) 42%,var(--surface)));box-shadow:var(--card-shadow)}.dashboard-hero h1{margin:5px 0 9px}.dashboard-hero>div:first-child>p:last-child{margin:0;color:var(--muted);font-size:13px}.dashboard-overall{display:grid;justify-items:end}.dashboard-overall strong{font:800 42px DM Mono;color:var(--accent)}.dashboard-overall span{font-size:10px;color:var(--muted)}.dashboard-overall i{display:block;width:100%;height:6px;margin-top:12px;border-radius:99px;background:var(--surface-2);overflow:hidden}.dashboard-overall b{display:block;height:100%;border-radius:inherit;background:var(--accent)}.dashboard-actions{display:grid;grid-template-columns:1.45fr repeat(3,1fr);gap:12px;margin-top:18px}.dashboard-action{display:grid;align-content:start;min-height:150px;padding:19px;border:1px solid var(--line);border-radius:15px;background:var(--surface);color:var(--text)!important;text-decoration:none;box-shadow:var(--card-shadow)}.dashboard-action:hover{transform:translateY(-3px);box-shadow:var(--card-shadow-hover);border-color:color-mix(in srgb,var(--accent) 25%,var(--line))}.dashboard-action.primary{background:linear-gradient(135deg,#155eef,#284fcb);color:#fff!important;border-color:transparent}.dashboard-action small{font:800 9px DM Mono;letter-spacing:.09em;color:var(--soft)}.dashboard-action.primary small{color:#bed0ff}.dashboard-action strong{margin-top:auto;font-size:15px;line-height:1.3}.dashboard-action span{margin-top:8px;font-size:10px;color:var(--muted)}.dashboard-action.primary span{color:#dce6ff}.dashboard-metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:12px}.dashboard-metrics article{padding:17px 19px;border:1px solid var(--line);border-radius:14px;background:var(--surface)}.dashboard-metrics small{font:800 8px DM Mono;letter-spacing:.08em;color:var(--soft)}.dashboard-metrics strong{display:block;margin-top:7px;font:800 24px DM Mono;color:var(--text)}.dashboard-metrics strong span{font-size:11px;color:var(--soft)}.dashboard-metrics p{margin:3px 0 0;color:var(--muted);font-size:9px}.student-dashboard .dashboard-columns{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(280px,.8fr);gap:16px;margin-top:28px}.dashboard-panel{padding:22px 24px;border:1px solid var(--line);border-radius:17px;background:var(--surface);box-shadow:var(--card-shadow)}.dashboard-panel-head{display:flex;justify-content:space-between;align-items:end;gap:16px;padding-bottom:15px;border-bottom:1px solid var(--line)}.dashboard-panel-head small{font:800 8px DM Mono;letter-spacing:.09em;color:var(--soft)}.dashboard-panel-head h2{margin:3px 0 0;font-size:19px}.dashboard-panel-head>a{font-size:10px;text-decoration:none;color:var(--accent)}.dashboard-paths{display:grid;gap:14px;margin-top:18px}.dashboard-path span{display:flex;justify-content:space-between;align-items:center;gap:15px}.dashboard-path strong{font-size:11px}.dashboard-path small{font:700 9px DM Mono;color:var(--muted)}.dashboard-path i{display:block;height:5px;margin-top:7px;border-radius:99px;background:var(--surface-2);overflow:hidden}.dashboard-path b{display:block;height:100%;border-radius:inherit;background:var(--accent)}.dashboard-recommend{padding:20px 0}.dashboard-recommend>span{display:grid;place-items:center;width:42px;height:42px;border-radius:12px;background:var(--accent-soft);color:var(--accent);font-size:20px}.dashboard-recommend strong{display:block;margin-top:13px;font-size:14px}.dashboard-recommend p{margin:6px 0 12px;color:var(--muted);font-size:11px;line-height:1.55}.dashboard-recommend a{font-size:10px;font-weight:800;text-decoration:none}.dashboard-mini-links{border-top:1px solid var(--line)}.dashboard-mini-links a{display:flex;justify-content:space-between;padding:12px 0;border-bottom:1px solid var(--line);font-size:10px;color:var(--text);text-decoration:none}.dashboard-mini-links b{color:var(--accent)}:root[data-theme=dark] .dashboard-panel,:root[data-theme=dark] .dashboard-hero,:root[data-theme=dark] .dashboard-action{box-shadow:none}@media (max-width:980px){.dashboard-actions,.dashboard-metrics{grid-template-columns:1fr 1fr}.student-dashboard .dashboard-columns{grid-template-columns:1fr}}@media (max-width:760px){.dashboard-hero{grid-template-columns:1fr;padding:21px}.dashboard-overall{justify-items:start}.dashboard-actions{grid-template-columns:1fr}.dashboard-action{min-height:120px}.dashboard-metrics{grid-template-columns:1fr 1fr}.dashboard-panel{padding:18px}.dashboard-panel-head{align-items:start;flex-direction:column}}.lab-hub{max-width:1240px}.lab-hub-hero{display:grid;grid-template-columns:minmax(0,1fr) 210px;gap:38px;align-items:end;padding:30px 32px;border:1px solid var(--line);border-radius:22px;background:linear-gradient(120deg,var(--surface),color-mix(in srgb,var(--cyan) 7%,var(--surface)));box-shadow:var(--card-shadow)}.lab-hub-hero h1{max-width:760px;margin:6px 0 12px;font-size:clamp(38px,4.8vw,64px);line-height:1;letter-spacing:-.06em}.lab-hub-hero p:last-child{max-width:720px;margin:0;color:var(--muted);font-size:13px;line-height:1.7}.lab-hub-stat{display:grid;justify-items:end;padding-left:24px;border-left:1px solid var(--line)}.lab-hub-stat strong{font:800 52px DM Mono;color:var(--cyan)}.lab-hub-stat span{max-width:125px;text-align:right;color:var(--muted);font-size:10px;line-height:1.5}.lab-featured,.lab-all{margin-top:32px}.lab-section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:14px}.lab-section-head small{font:800 9px DM Mono;letter-spacing:.09em;color:var(--soft)}.lab-section-head h2{margin:4px 0 0;font-size:23px}.lab-section-head>a{font-size:10px;font-weight:800;text-decoration:none}.lab-featured-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.lab-feature-card{display:grid;grid-template-columns:58px minmax(0,1fr) 18px;gap:14px;align-items:center;padding:18px;border:1px solid var(--line);border-radius:15px;background:var(--surface);color:var(--text)!important;text-decoration:none;box-shadow:var(--card-shadow)}.lab-feature-card:hover{transform:translateY(-3px);box-shadow:var(--card-shadow-hover);border-color:color-mix(in srgb,var(--accent) 26%,var(--line))}.lab-feature-card>span{display:grid;place-items:center;width:58px;height:58px;border-radius:14px;background:var(--accent-soft);color:var(--accent);font:800 10px DM Mono}.lab-feature-card small,.lab-feature-card strong,.lab-feature-card p{display:block}.lab-feature-card small{font:700 8px DM Mono;color:var(--soft)}.lab-feature-card strong{margin-top:4px;font-size:14px}.lab-feature-card p{margin:5px 0 0;color:var(--muted);font-size:10px;line-height:1.5}.lab-feature-card>b{color:var(--accent)}.lab-catalog{border:1px solid var(--line);border-radius:16px;overflow:hidden;background:var(--surface)}.lab-catalog>a{display:grid;grid-template-columns:54px minmax(0,1fr) 155px 18px;gap:14px;align-items:center;padding:14px 16px;border-bottom:1px solid var(--line);color:var(--text)!important;text-decoration:none}.lab-catalog>a:last-child{border-bottom:0}.lab-catalog>a:hover{background:var(--surface-2)}.lab-catalog-icon{display:grid;place-items:center;width:46px;height:46px;border-radius:12px;background:var(--surface-2);color:var(--accent);font:800 9px DM Mono}.lab-catalog-copy strong,.lab-catalog-copy small{display:block}.lab-catalog-copy strong{font-size:12px}.lab-catalog-copy small{margin-top:4px;color:var(--muted);font-size:10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.lab-catalog-meta{text-align:right;color:var(--muted);font:9px/1.6 DM Mono}.lab-catalog>a>b{color:var(--accent)}.lab-detail-page{max-width:1120px}.lab-detail-top{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:24px}.lab-detail-top a{font-size:10px;text-decoration:none}.lab-detail-top span{font:700 9px DM Mono;color:var(--soft)}.lab-detail-hero{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:28px;align-items:end;padding:24px 26px;border:1px solid var(--line);border-radius:18px;background:var(--surface);box-shadow:var(--card-shadow)}.lab-detail-hero h1{margin:6px 0 8px;font-size:clamp(34px,4vw,50px)}.lab-detail-hero p:last-child{margin:0;color:var(--muted);font-size:12px}.lab-accent{display:inline-grid;place-items:center;min-width:52px;height:30px;padding:0 10px;margin-bottom:12px;border-radius:9px;background:var(--accent-soft);color:var(--accent);font:800 9px DM Mono}.lab-detail-links{display:grid;gap:8px;min-width:180px}.lab-detail-links a{padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--surface-2);font-size:10px;font-weight:800;text-decoration:none}.lab-active-shell{margin-top:18px;padding:24px 26px;border:1px solid var(--line);border-radius:18px;background:var(--surface);box-shadow:var(--card-shadow)}.lab-active-shell>.practice-page{padding:0!important;margin:0!important;max-width:none!important}.lab-active-shell>.practice-page>h1,.lab-active-shell>.practice-page>.section-kicker,.lab-active-shell>.practice-page>.practice-links:first-of-type{display:none}.lesson-practice-bridge{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:24px;align-items:center;margin:34px 0 20px;padding:22px 24px;border:1px solid color-mix(in srgb,var(--accent) 24%,var(--line));border-radius:16px;background:linear-gradient(110deg,var(--accent-soft),var(--surface));box-shadow:var(--card-shadow)}.lesson-practice-bridge h2{margin:5px 0 7px!important;font-size:20px!important}.lesson-practice-bridge p{margin:0;color:var(--muted);font-size:11px;line-height:1.6}.lesson-practice-bridge>div:last-child{display:grid;gap:8px;min-width:205px}.lesson-practice-bridge .button{justify-content:center}:root[data-theme=dark] .lab-hub-hero,:root[data-theme=dark] .lab-feature-card,:root[data-theme=dark] .lab-detail-hero,:root[data-theme=dark] .lab-active-shell,:root[data-theme=dark] .lesson-practice-bridge{box-shadow:none}@media (max-width:760px){.lab-hub-hero{grid-template-columns:1fr;padding:22px 20px}.lab-hub-stat{justify-items:start;padding:14px 0 0;border-left:0;border-top:1px solid var(--line)}.lab-hub-stat strong{font-size:38px}.lab-hub-stat span{text-align:left}.lab-section-head{align-items:start;flex-direction:column}.lab-featured-grid{grid-template-columns:1fr}.lab-catalog>a{grid-template-columns:48px minmax(0,1fr) 18px}.lab-catalog-meta{grid-column:2;text-align:left}.lab-catalog-copy small{white-space:normal}.lab-catalog>a>b{grid-column:3;grid-row:1/3}.lab-detail-top{align-items:start;flex-direction:column}.lab-detail-hero{grid-template-columns:1fr;padding:20px}.lab-detail-links{min-width:0}.lab-active-shell{padding:18px}.lesson-practice-bridge{grid-template-columns:1fr;padding:18px}.lesson-practice-bridge>div:last-child{min-width:0}}.study-plan-page{max-width:1240px}.study-plan-hero{display:grid;grid-template-columns:minmax(0,1fr) 210px;gap:36px;align-items:end;padding:30px 32px;border:1px solid var(--line);border-radius:22px;background:linear-gradient(125deg,var(--surface),color-mix(in srgb,var(--accent) 7%,var(--surface)));box-shadow:var(--card-shadow)}.study-plan-hero h1{max-width:720px;margin:7px 0 12px;font-size:clamp(38px,5vw,66px);line-height:.98;letter-spacing:-.06em}.study-plan-hero h1 span{color:var(--accent)}.study-plan-hero p:last-child{max-width:720px;margin:0;color:var(--muted);font-size:13px;line-height:1.7}.study-plan-progress{display:grid;justify-items:end}.study-plan-progress strong{font:800 46px DM Mono;color:var(--accent)}.study-plan-progress span{font-size:10px;color:var(--muted)}.study-plan-progress i{display:block;width:100%;height:6px;margin-top:12px;border-radius:99px;background:var(--surface-2);overflow:hidden}.study-plan-progress i b{display:block;height:100%;border-radius:inherit;background:var(--accent)}.study-plan-controls{display:grid;grid-template-columns:minmax(280px,.8fr) 1.4fr;gap:18px;align-items:end;margin-top:22px;padding:20px 22px;border:1px solid var(--line);border-radius:16px;background:var(--surface)}.study-plan-controls>div>small,.study-plan-summary small{font:800 8px DM Mono;letter-spacing:.09em;color:var(--soft)}.study-plan-controls .plan-options{margin:8px 0 0}.study-plan-controls .plan-options button{min-height:38px;padding:8px 12px;font-size:10px}.study-plan-summary{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.study-plan-summary span{padding:12px 14px;border-left:1px solid var(--line)}.study-plan-summary strong{display:block;margin-top:5px;font:800 16px DM Mono}.study-plan-next{display:flex;align-items:center;justify-content:space-between;gap:22px;margin-top:14px;padding:20px 22px;border-radius:16px;background:linear-gradient(120deg,#155eef,#334fc8);color:#fff;box-shadow:0 16px 36px #155eef2e}.study-plan-next>div{display:grid;gap:4px}.study-plan-next small{font:800 8px DM Mono;letter-spacing:.09em;color:#c3d2ff}.study-plan-next strong{font-size:17px}.study-plan-next span{font-size:10px;color:#dbe4ff}.study-plan-next .button.primary{background:#fff;color:#155eef;box-shadow:none}.study-plan-next.complete{background:linear-gradient(120deg,#18794e,#1d8f60)}.study-sessions{margin-top:32px}.study-plan-shortcuts{display:flex;gap:7px}.study-plan-shortcuts button{padding:8px 10px;border:1px solid var(--line);border-radius:9px;background:var(--surface);color:var(--muted);font-size:9px;font-weight:800}.study-plan-shortcuts button:hover{color:var(--accent);border-color:var(--accent)}.study-session{margin-top:12px;border:1px solid var(--line);border-radius:16px;background:var(--surface);overflow:hidden;box-shadow:var(--card-shadow)}.study-session>header{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background:var(--surface-2);border-bottom:1px solid var(--line)}.study-session>header span{font:800 9px DM Mono;letter-spacing:.08em;color:var(--accent)}.study-session>header strong{font:800 10px DM Mono;color:var(--muted)}.study-session>div>button{display:grid;grid-template-columns:38px minmax(0,1fr) 105px 82px;gap:13px;align-items:center;width:100%;padding:14px 16px;border:0;border-bottom:1px solid var(--line);background:transparent;color:var(--text);text-align:left}.study-session>div>button:last-child{border-bottom:0}.study-session>div>button:hover{background:var(--surface-2)}.study-session-index{display:grid;place-items:center;width:30px;height:30px;border-radius:9px;background:var(--accent-soft);color:var(--accent);font:800 9px DM Mono}.study-session>div>button>span:nth-child(2) strong,.study-session>div>button>span:nth-child(2) small{display:block}.study-session>div>button>span:nth-child(2) strong{font-size:12px}.study-session>div>button>span:nth-child(2) small{margin-top:3px;color:var(--muted);font-size:9px}.study-session>div>button>b{font:700 9px DM Mono;color:var(--accent);text-align:right}.importance{padding:5px 7px;border-radius:999px;font:700 8px DM Mono;font-style:normal;text-align:center}.importance.high{background:#ffe8ec;color:#a82843}.importance.medium{background:#fff0dc;color:#915513}.importance.basic{background:var(--surface-2);color:var(--muted)}:root[data-theme=dark] .study-plan-hero,:root[data-theme=dark] .study-session{box-shadow:none}:root[data-theme=dark] .importance.high{background:#4a2530;color:#ff9aac}:root[data-theme=dark] .importance.medium{background:#4a3620;color:#ffc77b}@media (max-width:760px){.study-plan-hero{grid-template-columns:1fr;padding:22px 20px}.study-plan-progress{justify-items:start}.study-plan-controls{grid-template-columns:1fr;padding:17px}.study-plan-summary{grid-template-columns:1fr 1fr 1fr}.study-plan-summary span{padding:9px;border-left:0;border-top:1px solid var(--line)}.study-plan-next{align-items:stretch;flex-direction:column}.study-plan-next .button{width:100%;justify-content:center}.study-session>div>button{grid-template-columns:34px minmax(0,1fr) 62px}.importance{grid-column:2;justify-self:start}.study-session>div>button>b{grid-column:3;grid-row:1/3}.study-plan-shortcuts{width:100%}.study-plan-shortcuts button{flex:1}}.simplified-courses{max-width:1120px}.simplified-courses>h1{max-width:760px}.simple-course-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:32px}.simple-course-card{border:1px solid var(--line);border-radius:16px;background:var(--surface);overflow:hidden}.simple-course-main{display:grid;grid-template-columns:46px minmax(0,1fr) 18px;gap:14px;align-items:start;width:100%;padding:20px;border:0;background:transparent;color:var(--text);text-align:left}.simple-course-main:hover{background:var(--surface-2)}.simple-course-number{display:grid;place-items:center;width:42px;height:42px;border-radius:11px;background:var(--accent-soft);color:var(--accent);font:800 10px DM Mono}.simple-course-main h2{margin:0 0 6px;font-size:18px}.simple-course-main p{margin:0;color:var(--muted);font-size:11px;line-height:1.55}.simple-course-main>b{color:var(--accent)}.simple-course-foot{display:grid;grid-template-columns:auto 1fr auto;gap:12px;align-items:center;padding:12px 20px;border-top:1px solid var(--line);background:var(--surface-2)}.simple-course-foot>span:first-child{font:700 9px DM Mono;color:var(--muted)}.simple-course-progress{height:5px;border-radius:99px;background:var(--line);overflow:hidden}.simple-course-progress i{display:block;height:100%;background:var(--accent);border-radius:inherit}.simple-course-foot button{min-height:34px;border:0;background:transparent;color:var(--accent);font-size:9px;font-weight:800}.simple-course-hero{display:grid;grid-template-columns:minmax(0,1fr) 150px;gap:24px;align-items:end;margin-top:24px;padding-bottom:22px;border-bottom:1px solid var(--line)}.simple-course-hero h1{margin:5px 0 8px}.simple-course-hero p:last-child{margin:0;color:var(--muted);font-size:13px}.simple-course-stat{display:grid;justify-items:end}.simple-course-stat strong{font:800 34px DM Mono;color:var(--accent)}.simple-course-stat span{font-size:9px;color:var(--muted)}.simple-resume{margin:20px 0 28px}.simple-lesson-list{border:1px solid var(--line);border-radius:16px;overflow:hidden;background:var(--surface)}.simple-lesson-list>button{display:grid;grid-template-columns:38px minmax(0,1fr) 70px 16px;gap:13px;align-items:center;width:100%;padding:14px 16px;border:0;border-bottom:1px solid var(--line);background:transparent;color:var(--text);text-align:left}.simple-lesson-list>button:last-child{border-bottom:0}.simple-lesson-list>button:hover{background:var(--surface-2)}.simple-lesson-index{display:grid;place-items:center;width:30px;height:30px;border-radius:9px;background:var(--surface-2);color:var(--muted);font:800 9px DM Mono}.simple-lesson-list>button.done .simple-lesson-index{background:var(--accent-soft);color:var(--green)}.simple-lesson-copy strong,.simple-lesson-copy small{display:block}.simple-lesson-copy strong{font-size:12px}.simple-lesson-copy small{margin-top:3px;color:var(--muted);font-size:9px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.simple-lesson-meta{font:700 9px DM Mono;color:var(--muted);text-align:right}.simple-lesson-list>button>b{color:var(--accent)}.simple-course-next{display:flex;justify-content:space-between;align-items:center;gap:18px;margin-top:20px;padding:16px 18px;border-radius:13px;background:var(--surface-2)}.simple-course-next>span{font-size:11px;color:var(--muted)}.simplified-tutorials{max-width:1080px}.simple-tutorial-hero{max-width:800px}.simple-tutorial-hero h1{font-size:clamp(38px,5vw,60px);line-height:1;letter-spacing:-.055em;margin:7px 0 14px}.simple-tutorial-hero>p:last-child{color:var(--muted);font-size:14px;line-height:1.7}.tutorial-guide-note{display:grid;grid-template-columns:34px 1fr 34px 1fr 34px 1fr;gap:10px;align-items:start;margin:28px 0;padding:17px 18px;border:1px solid var(--line);border-radius:14px;background:var(--surface)}.tutorial-guide-note>span{display:grid;place-items:center;width:30px;height:30px;border-radius:9px;background:var(--accent-soft);color:var(--accent);font:800 9px DM Mono}.tutorial-guide-note strong{font-size:10px}.tutorial-guide-note p{margin:3px 0 0;color:var(--muted);font-size:9px;line-height:1.45}.simple-tutorial-list{border:1px solid var(--line);border-radius:16px;overflow:hidden;background:var(--surface)}.simple-tutorial-list>button{position:relative;display:grid;grid-template-columns:40px minmax(0,1fr) 70px 16px;gap:14px;align-items:center;width:100%;padding:17px 18px;border:0;border-bottom:1px solid var(--line);background:transparent;color:var(--text);text-align:left}.simple-tutorial-list>button:last-child{border-bottom:0}.simple-tutorial-list>button:hover{background:var(--surface-2)}.simple-tutorial-index{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:var(--surface-2);color:var(--muted);font:800 9px DM Mono}.simple-tutorial-list>button.done .simple-tutorial-index{background:var(--accent-soft);color:var(--green)}.simple-tutorial-copy small,.simple-tutorial-copy strong,.simple-tutorial-copy p{display:block}.simple-tutorial-copy small{font:700 8px DM Mono;color:var(--soft)}.simple-tutorial-copy strong{margin-top:3px;font-size:13px}.simple-tutorial-copy p{margin:4px 0 0;color:var(--muted);font-size:9px;line-height:1.45}.simple-tutorial-time{font:700 9px DM Mono;color:var(--muted);text-align:right}.simple-tutorial-list>button>b{color:var(--accent)}.simple-tutorial-progress{position:absolute;left:0;bottom:0;width:100%;height:2px;background:transparent}.simple-tutorial-progress i{display:block;height:100%;background:var(--green)}.simple-tutorial-runner-page{max-width:1080px}.simple-runner-hero{display:grid;grid-template-columns:minmax(0,1fr) 120px;gap:24px;align-items:end;margin-top:20px;padding-bottom:22px;border-bottom:1px solid var(--line)}.simple-runner-hero h1{margin:5px 0 10px;font-size:clamp(34px,4.5vw,52px);line-height:1.03}.simple-runner-hero p:last-child{margin:0;color:var(--muted);font-size:12px}.simple-runner-hero>div:last-child{display:grid;justify-items:end}.simple-runner-hero>div:last-child strong{font:800 30px DM Mono;color:var(--accent)}.simple-runner-hero>div:last-child span{font-size:9px;color:var(--muted)}.simple-runner-layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:14px;margin-top:20px}.simple-runner-steps{border:1px solid var(--line);border-radius:14px;background:var(--surface);overflow:hidden}.simple-runner-steps button{display:grid;grid-template-columns:30px 1fr;gap:9px;align-items:center;width:100%;min-height:48px;padding:9px 12px;border:0;border-bottom:1px solid var(--line);background:transparent;color:var(--muted);text-align:left}.simple-runner-steps button:last-child{border-bottom:0}.simple-runner-steps button span{display:grid;place-items:center;width:26px;height:26px;border-radius:8px;background:var(--surface-2);font:800 8px DM Mono}.simple-runner-steps button strong{font-size:10px}.simple-runner-steps button.active{background:var(--accent-soft);color:var(--accent)}.simple-runner-steps button.done span{background:var(--green);color:#fff}.simple-runner-card{padding:24px;border:1px solid var(--line);border-radius:14px;background:var(--surface)}.simple-runner-number{font:800 22px DM Mono;color:var(--accent)}.simple-runner-card>small{display:block;margin-top:14px;font:800 8px DM Mono;letter-spacing:.09em;color:var(--soft)}.simple-runner-card h2{margin:4px 0 8px;font-size:24px}.simple-runner-goal{margin:0 0 18px;color:var(--muted);font-size:13px}.simple-runner-card section{padding:15px 16px;border-left:3px solid var(--accent);border-radius:9px;background:var(--surface-2)}.simple-runner-card section.check{margin-top:10px;border-color:var(--green)}.simple-runner-card section>span{font:800 8px DM Mono;color:var(--accent)}.simple-runner-card section.check>span{color:var(--green)}.simple-runner-card section p{margin:5px 0 0;font-size:12px;line-height:1.6}.simple-runner-card label{display:grid;gap:6px;margin:12px 0;color:var(--muted);font-size:9px}.simple-runner-card label input{width:100%;margin:0}.simple-runner-actions{display:flex;justify-content:space-between;gap:10px;margin-top:18px}.simple-runner-footer{display:flex;justify-content:flex-end;align-items:center;gap:10px;margin-top:12px;font-size:9px}.simple-runner-footer span{color:var(--muted)}.simple-runner-footer a{text-decoration:none;font-weight:800}.learning-flow-card{align-self:center;padding:28px;border:1px solid var(--line);border-radius:22px;background:var(--surface);box-shadow:var(--card-shadow)}.learning-flow-card h2{margin:7px 0 24px;font-size:30px;line-height:1.08;letter-spacing:-.04em}.learning-flow-steps{display:grid;gap:8px}.learning-flow-steps button{display:grid;grid-template-columns:38px 1fr;gap:11px;align-items:center;width:100%;padding:13px;border:1px solid var(--line);border-radius:11px;background:var(--surface-2);color:var(--text);text-align:left}.learning-flow-steps button:hover{border-color:var(--accent);transform:translate(3px)}.learning-flow-steps button>span{font:800 9px DM Mono;color:var(--accent)}.learning-flow-steps strong,.learning-flow-steps small{display:block}.learning-flow-steps strong{font-size:12px}.learning-flow-steps small{margin-top:2px;color:var(--muted);font-size:9px}.simple-dashboard-actions{display:grid;grid-template-columns:1.35fr 1fr 1fr;gap:12px;margin-top:18px}.simple-dashboard-progress{margin-top:28px}@media (max-width:760px){.simple-course-grid,.simple-course-hero,.simple-runner-hero{grid-template-columns:1fr}.simple-course-stat,.simple-runner-hero>div:last-child{justify-items:start}.simple-lesson-list>button{grid-template-columns:34px minmax(0,1fr) 16px}.simple-lesson-meta{grid-column:2;text-align:left}.simple-lesson-copy small{white-space:normal}.simple-lesson-list>button>b{grid-column:3;grid-row:1/3}.simple-course-next{align-items:stretch;flex-direction:column}.tutorial-guide-note{grid-template-columns:32px 1fr}.simple-tutorial-list>button{grid-template-columns:36px minmax(0,1fr) 16px}.simple-tutorial-time{grid-column:2;text-align:left}.simple-tutorial-list>button>b{grid-column:3;grid-row:1/3}.simple-runner-layout{grid-template-columns:1fr}.simple-runner-steps{display:flex;overflow:auto}.simple-runner-steps button{min-width:150px;border-bottom:0;border-right:1px solid var(--line)}.simple-runner-card{padding:19px}.simple-runner-actions{flex-direction:column}.simple-runner-actions .button{width:100%;justify-content:center}.simple-dashboard-actions{grid-template-columns:1fr}.learning-flow-card{padding:20px}}.ubuntu-guide{max-width:1100px}.ubuntu-guide-protected,.ubuntu-guide-protected *{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}.ubuntu-guide-protected img{-webkit-user-drag:none}.ubuntu-guide-hero{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:24px;align-items:end;margin:20px 0 26px;padding-bottom:24px;border-bottom:1px solid var(--line)}.ubuntu-guide-hero h1{margin:6px 0 10px;font-size:clamp(38px,5vw,62px);line-height:1;letter-spacing:-.055em}.ubuntu-guide-hero p:last-child{max-width:760px;margin:0;color:var(--muted);font-size:13px;line-height:1.65}.ubuntu-guide-actions{display:flex;align-items:center}.ubuntu-cheat-sheet{margin:0 0 34px;padding:26px;border:1px solid var(--line);border-radius:18px;background:var(--surface);box-shadow:0 18px 55px #1022380f}.ubuntu-cheat-head{display:flex;justify-content:space-between;gap:24px;align-items:end;margin-bottom:18px;padding-bottom:16px;border-bottom:1px solid var(--line)}.ubuntu-cheat-head span{font:800 9px DM Mono;letter-spacing:.12em;color:var(--accent)}.ubuntu-cheat-head h2{margin:5px 0 0;font-size:26px;letter-spacing:-.03em}.ubuntu-cheat-head p{max-width:320px;margin:0;color:var(--muted);font-size:10px;line-height:1.5;text-align:right}.ubuntu-cheat-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.ubuntu-cheat-grid article{padding:16px;border:1px solid var(--line);border-radius:12px;background:var(--surface-2);break-inside:avoid}.ubuntu-cheat-grid article:nth-child(2){grid-row:span 2}.ubuntu-cheat-grid h3{margin:0 0 10px;font-size:12px}.ubuntu-cheat-grid code,.ubuntu-step>code{display:block;width:fit-content;max-width:100%;margin:5px 0;padding:6px 8px;border-radius:7px;background:var(--surface);color:var(--accent);font:700 10px/1.45 DM Mono;overflow-wrap:anywhere}.ubuntu-cheat-grid pre,.ubuntu-terminal pre{margin:8px 0 0;white-space:pre-wrap;overflow-wrap:anywhere;font:600 10px/1.55 DM Mono}.ubuntu-cheat-print-note{margin-top:12px;color:var(--muted);font-size:9px;text-align:right}.ubuntu-guide-sections{display:grid;gap:18px}.ubuntu-guide-section{display:grid;grid-template-columns:58px minmax(0,1fr);gap:20px;padding:24px;border:1px solid var(--line);border-radius:16px;background:var(--surface)}.ubuntu-section-number{display:grid;place-items:center;width:48px;height:48px;border-radius:12px;background:var(--accent-soft);color:var(--accent);font:800 12px DM Mono}.ubuntu-guide-section h2{margin:5px 0 18px;font-size:26px;letter-spacing:-.03em}.ubuntu-step{padding:13px 14px;margin-top:9px;border:1px solid var(--line);border-radius:10px;background:var(--surface-2)}.ubuntu-step h3{margin:0 0 7px;font-size:11px}.ubuntu-step p{margin:7px 0 0;color:var(--muted);font-size:10px;line-height:1.55}.ubuntu-terminal{margin:10px 0;padding:0;border-radius:11px;background:#111821;color:#dce7ef;overflow:hidden}.ubuntu-terminal.compact{max-width:520px}.ubuntu-terminal-bar{padding:8px 12px;background:#1b2633;color:#8ba2b7;font:700 9px DM Mono}.ubuntu-terminal pre{padding:14px;margin:0;color:#dce7ef}.ubuntu-config-list{display:grid;gap:7px;margin:10px 0}.ubuntu-config-list p{display:grid;grid-template-columns:minmax(260px,1fr) minmax(160px,.8fr);gap:12px;align-items:center;margin:0;padding:9px 11px;border:1px solid var(--line);border-radius:9px;background:var(--surface-2)}.ubuntu-config-list code{color:var(--accent);font:700 10px/1.45 DM Mono;overflow-wrap:anywhere}.ubuntu-config-list span{color:var(--muted);font-size:10px;line-height:1.45}:root[data-theme=dark] .ubuntu-cheat-sheet{box-shadow:none}@media (max-width:760px){.ubuntu-guide-hero{grid-template-columns:1fr}.ubuntu-cheat-head{align-items:start;flex-direction:column}.ubuntu-cheat-head p{text-align:left}.ubuntu-cheat-grid{grid-template-columns:1fr}.ubuntu-cheat-grid article:nth-child(2){grid-row:auto}.ubuntu-guide-section{grid-template-columns:1fr;padding:18px}.ubuntu-config-list p{grid-template-columns:1fr}.ubuntu-guide-actions .button{width:100%;justify-content:center}}@media print{body.print-ubuntu-cheat{background:#fff!important}body.print-ubuntu-cheat *{visibility:hidden!important}body.print-ubuntu-cheat .ubuntu-cheat-sheet,body.print-ubuntu-cheat .ubuntu-cheat-sheet *{visibility:visible!important}body.print-ubuntu-cheat .ubuntu-cheat-sheet{position:absolute;left:0;top:0;width:100%;margin:0;padding:8mm;border:0;border-radius:0;box-shadow:none;background:#fff!important;color:#111!important}body.print-ubuntu-cheat .ubuntu-cheat-head{margin-bottom:5mm;padding-bottom:4mm;border-color:#aaa}body.print-ubuntu-cheat .ubuntu-cheat-head h2{font-size:20pt}body.print-ubuntu-cheat .ubuntu-cheat-head p{color:#333!important}body.print-ubuntu-cheat .ubuntu-cheat-grid{grid-template-columns:1fr 1fr;gap:4mm}body.print-ubuntu-cheat .ubuntu-cheat-grid article{padding:4mm;border-color:#bbb;background:#fff!important}body.print-ubuntu-cheat .ubuntu-cheat-grid code,body.print-ubuntu-cheat .ubuntu-cheat-grid pre{background:#fff!important;color:#111!important;font-size:8.5pt}body.print-ubuntu-cheat .no-print{display:none!important}@page{size:A4 portrait;margin:10mm}}.single-course-grid{grid-template-columns:minmax(0,720px)}.source-course-protected,.source-course-protected *{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}.source-course-layout{display:grid;grid-template-columns:260px minmax(0,1fr);gap:18px;align-items:start}.source-course-nav{position:sticky;top:88px;border:1px solid var(--line);border-radius:15px;background:var(--surface);overflow:hidden}.source-course-nav .course-nav-title,.source-course-nav .course-nav-progress{padding:16px}.source-course-nav .course-nav-progress{border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.source-course-content{min-width:0;padding:26px;border:1px solid var(--line);border-radius:16px;background:var(--surface)}.source-course-content>h1{margin:7px 0 10px;font-size:clamp(34px,4.5vw,52px);line-height:1.04;letter-spacing:-.045em}.source-course-content>h2{margin:30px 0 13px;font-size:20px}.source-course-note{margin:18px 0 24px;padding:12px 14px;border-left:3px solid var(--accent);border-radius:8px;background:var(--accent-soft);color:var(--muted);font-size:10px;line-height:1.55}.source-step-list .step{background:var(--surface-2)}.source-command-list{display:grid;gap:9px}.source-command{padding:13px 14px;border:1px solid var(--line);border-radius:10px;background:var(--surface-2)}.source-command>span{display:block;margin-bottom:7px;color:var(--muted);font:800 8px DM Mono;letter-spacing:.08em}.source-command code{display:block;color:var(--accent);font:700 11px/1.55 DM Mono;overflow-wrap:anywhere}.source-command p{margin:6px 0 0;color:var(--muted);font-size:9px;line-height:1.45}@media (max-width:860px){.source-course-layout{grid-template-columns:1fr}.source-course-nav{position:static}.source-course-content{padding:19px}}.source-screens{margin:22px 0 28px;padding:16px;border:1px solid var(--line);border-radius:14px;background:var(--surface-2)}.source-screens-head{display:flex;justify-content:space-between;gap:12px;align-items:end;margin-bottom:13px}.source-screens-head span{font:800 8px DM Mono;letter-spacing:.1em;color:var(--accent)}.source-screens-head strong{font-size:11px}.source-screens-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.source-screens figure{margin:0;padding:12px;border:1px solid var(--line);border-radius:11px;background:var(--surface)}.source-screens img{display:block;max-width:100%;width:auto;height:auto;margin:0 auto;border-radius:6px;image-rendering:auto}.source-screens figcaption{margin-top:9px;color:var(--muted);font-size:9px;line-height:1.5}.source-correction,.source-verification{margin:18px 0;padding:14px 15px;border-radius:10px}.source-correction{border:1px solid rgba(217,119,6,.28);background:#d9770614}.source-verification{border:1px solid rgba(22,163,74,.25);background:#16a34a12}.source-correction strong,.source-verification strong{display:block;margin-bottom:5px;font-size:10px}.source-correction p,.source-verification p{margin:0;color:var(--muted);font-size:10px;line-height:1.6}@media (max-width:700px){.source-screens-grid{grid-template-columns:1fr}.source-screens-head{align-items:start;flex-direction:column}}.source-screens{margin:24px 0 30px;padding:0;border:0;border-radius:18px;background:transparent}.source-screens-head{display:flex;justify-content:space-between;align-items:end;gap:18px;margin:0 0 12px;padding:0 2px}.source-screens-head span,.ubuntu-material-shot-top span{font:800 8px DM Mono;letter-spacing:.12em;color:var(--accent)}.source-screens-head strong{font-size:12px;letter-spacing:-.01em}.source-screens-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.source-screens-grid figure{margin:0;padding:0;border:0;border-radius:16px;background:transparent}.source-screen-frame,.ubuntu-material-shot{overflow:hidden;border:1px solid color-mix(in srgb,var(--line) 86%,var(--accent) 14%);border-radius:15px;background:var(--surface);box-shadow:0 14px 32px #10223814}.source-screen-chrome{display:flex;justify-content:space-between;align-items:center;min-height:34px;padding:0 12px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,var(--surface),var(--surface-2))}.source-screen-chrome>span{display:flex;gap:5px}.source-screen-chrome i{display:block;width:7px;height:7px;border-radius:50%;background:var(--line)}.source-screen-chrome b{color:var(--muted);font:700 8px DM Mono;letter-spacing:.08em;text-transform:uppercase}.source-screen-viewport,.ubuntu-material-shot-frame{display:grid;place-items:center;min-height:118px;padding:20px;background:linear-gradient(rgba(127,127,127,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(127,127,127,.035) 1px,transparent 1px),var(--surface-2);background-size:18px 18px}.source-screen-viewport img,.ubuntu-material-shot-frame img{display:block;width:auto;max-width:100%;height:auto;margin:0 auto;border:1px solid rgba(15,23,42,.14);border-radius:7px;box-shadow:0 10px 28px #0f172a2e}.source-screens figcaption{margin:9px 3px 0;padding:0;color:var(--muted);font-size:9.5px;line-height:1.55}.ubuntu-material-gallery{display:grid;gap:14px;margin:14px 0 18px}.ubuntu-material-gallery.two{grid-template-columns:repeat(2,minmax(0,1fr))}.ubuntu-material-gallery.one{grid-template-columns:minmax(0,1fr)}.ubuntu-material-gallery.one .ubuntu-material-shot{max-width:680px}.ubuntu-material-gallery.compact .ubuntu-material-shot{max-width:520px}.ubuntu-material-shot{margin:0}.ubuntu-material-shot-top{display:flex;justify-content:space-between;align-items:center;gap:16px;min-height:46px;padding:10px 14px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,var(--surface),var(--surface-2))}.ubuntu-material-shot-top strong{font-size:11px;line-height:1.3;text-align:right}.ubuntu-material-shot-frame{min-height:120px;padding:22px}.ubuntu-material-shot figcaption{margin:0;padding:11px 14px 13px;border-top:1px solid var(--line);background:var(--surface);color:var(--muted);font-size:9.5px;line-height:1.55}.ubuntu-guide-section>div:last-child{min-width:0}.ubuntu-guide-section .ubuntu-step{border-color:color-mix(in srgb,var(--line) 88%,var(--accent) 12%)}.ubuntu-guide-section .ubuntu-step h3{font-size:11.5px}.ubuntu-guide-section .ubuntu-step p b{color:var(--text)}.ubuntu-source-note{margin:13px 0;padding:12px 14px;border:1px solid rgba(217,119,6,.24);border-left:3px solid #d97706;border-radius:10px;background:#d9770612;color:var(--muted);font-size:10px;line-height:1.6}:root[data-theme=dark] .source-screen-frame,:root[data-theme=dark] .ubuntu-material-shot{box-shadow:none}:root[data-theme=dark] .source-screen-viewport img,:root[data-theme=dark] .ubuntu-material-shot-frame img{border-color:#ffffff1f;box-shadow:0 10px 28px #00000047}@media (max-width:760px){.source-screens-grid,.ubuntu-material-gallery.two{grid-template-columns:1fr}.source-screens-head,.ubuntu-material-shot-top{align-items:flex-start;flex-direction:column}.ubuntu-material-shot-top strong{text-align:left}.source-screen-viewport,.ubuntu-material-shot-frame{padding:14px;min-height:90px}}:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;--bg:#f4f6f9;--surface:#fff;--surface-2:#edf1f6;--line:#dbe1ea;--text:#142238;--muted:#65748b;--soft:#91a0b4;--accent:#3f4ee9;--accent-soft:#e9ebff;--cyan:#087e9c;--green:#197b5a;--orange:#a96014;--red:#b94156;--violet:#6b4bd4;--shadow:0 18px 50px #2134520c;--radius:16px;color:var(--text);background:var(--bg);font-synthesis:none}:root{font-family:Manrope,system-ui,sans-serif;--bg:#f4f6f9;--surface:#fff;--surface-2:#edf1f6;--line:#dbe1ea;--text:#142238;--muted:#65748b;--soft:#91a0b4;--accent:#3f4ee9;--accent-soft:#e9ebff;--cyan:#087e9c;--green:#197b5a;--orange:#a96014;--red:#b94156;--violet:#6b4bd4;--shadow:0 18px 50px #2134520c;--radius:16px;color:var(--text);background:var(--bg);font-synthesis:none}*:focus-visible{outline:3px solid #45bfd5;outline-offset:3px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0}button,input,textarea{font:inherit}button{cursor:pointer;color:inherit;border:0}.app-shell{display:flex;min-height:100vh}.sidebar{width:252px;flex:0 0 252px;background:var(--surface);border-right:1px solid var(--line);padding:27px 15px 18px;display:flex;flex-direction:column}.brand{display:flex;gap:11px;align-items:center;background:transparent;text-align:left;padding:0 12px 41px}.brand-symbol{width:39px;height:39px;border-radius:12px;display:grid;place-items:center;color:#fff;font:800 14px DM Mono;background:linear-gradient(145deg,#4856ed,#20a9bc);box-shadow:0 7px 17px #3f4ee933}.brand strong{font-size:16px;letter-spacing:.1em;display:block}.brand small{display:block;color:var(--muted);font:500 8px DM Mono;letter-spacing:.08em;margin-top:3px}.side-group{margin-bottom:28px}.side-title,.section-kicker,.eyebrow{display:block;color:var(--soft);font:500 10px DM Mono;letter-spacing:.12em}.side-title{padding:0 12px 9px}.side-link{width:100%;display:flex;align-items:center;gap:12px;background:transparent;color:var(--muted);font-size:13px;text-align:left;padding:11px 12px;border-radius:10px;margin-bottom:3px}.side-link svg{color:#8797ad}.side-link:hover,.side-link.selected{background:var(--accent-soft);color:var(--accent)}.side-link.selected svg{color:var(--accent)}.count{margin-left:auto;border-radius:6px;background:var(--surface-2);color:var(--muted);padding:2px 7px;font:500 10px DM Mono}.sidebar-foot{margin-top:auto}.foot-progress{padding:15px 12px 17px;border-top:1px solid var(--line)}.foot-progress>div{display:flex;justify-content:space-between;font:500 9px DM Mono;color:var(--soft);margin-bottom:10px}.foot-progress b{color:var(--accent)}.progress-track{height:6px;display:block;background:var(--surface-2);border-radius:20px;overflow:hidden}.progress-track i{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--accent),#2daec1);transition:width .35s ease}.theme-switch{display:flex;gap:10px;align-items:center;background:transparent;color:var(--muted);font-size:12px;padding:10px 12px}.main{min-width:0;flex:1}.topbar{height:76px;display:flex;align-items:center;padding:0 clamp(20px,5vw,78px);gap:26px;border-bottom:1px solid var(--line);background:#f4f6f9ee;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);position:sticky;top:0;z-index:10}.search-trigger{max-width:550px;flex:1;display:flex;align-items:center;gap:11px;text-align:left;background:var(--surface);color:var(--soft);border:1px solid var(--line);border-radius:10px;padding:10px 13px;font-size:12px}.search-trigger:hover{border-color:#a8b5c8;color:var(--muted)}.search-trigger span{flex:1}.search-trigger kbd,.palette kbd{font:500 10px DM Mono;border:1px solid var(--line);border-radius:5px;padding:4px 6px}.top-actions{margin-left:auto;display:flex;gap:17px;align-items:center}.theme-icon,.mobile-menu{display:grid;place-items:center;background:transparent;color:var(--muted);padding:6px}.profile{width:33px;height:33px;border-radius:50%;background:#edbc92;color:#503126;font-weight:800}.mobile-menu,.mobile-wordmark{display:none}.page-wrap{max-width:1440px;margin:auto}.home-hero,.home-section,.standard-page,.lesson-shell{padding-left:clamp(20px,5vw,78px);padding-right:clamp(20px,5vw,78px)}.home-hero{padding-top:72px;display:grid;grid-template-columns:minmax(320px,1fr) minmax(390px,1fr);gap:75px;align-items:center;min-height:590px}.eyebrow{color:var(--accent)}.eyebrow b{display:inline-block;font-size:9px;color:var(--muted);background:var(--surface-2);padding:4px 6px;border-radius:5px;margin-left:5px}.status-dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:#35af76;margin-right:8px;box-shadow:0 0 0 5px #35af761c}.hero-copy h1{font-size:clamp(58px,7vw,94px);line-height:.93;letter-spacing:-.09em;margin:20px 0 25px}.hero-copy h1 span{color:var(--accent)}.hero-copy>p{max-width:530px;color:var(--muted);font-size:16px;line-height:1.75}.hero-actions{display:flex;gap:10px;margin:30px 0}.button{display:inline-flex;align-items:center;gap:14px;border-radius:9px;padding:12px 16px;font-size:12px;font-weight:800}.button.primary{background:var(--accent);color:#fff;box-shadow:0 8px 20px #3f4ee92b}.button.primary:hover{background:#303fd4}.button.quiet{background:var(--surface);border:1px solid var(--line);color:var(--text)}.button.quiet:hover{border-color:#8e9cb1}.hero-note{display:flex;align-items:center;gap:13px;color:var(--muted);font-size:10px}.hero-note strong,.hero-note small{display:block}.hero-note strong{font-size:11px;color:var(--text);margin-bottom:4px}.avatar-stack{display:flex}.avatar-stack i{width:26px;height:26px;border-radius:50%;border:2px solid var(--bg);display:grid;place-items:center;background:#9cb2c4;color:#22334a;font:800 9px Manrope;font-style:normal;margin-left:-6px}.avatar-stack i:first-child{margin-left:0;background:#d4a78c}.avatar-stack i:nth-child(3){background:#a8c697}.avatar-stack i:last-child{background:#dae3ee}.topology{border:1px solid #ccd7e5;background:var(--surface);border-radius:18px;box-shadow:var(--shadow);padding:19px;transform:rotate(.6deg)}.topology-head,.topology-foot{display:flex;justify-content:space-between;align-items:center;color:var(--soft);font:500 9px DM Mono;letter-spacing:.1em}.live{color:var(--green)}.live i{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--green);margin-right:5px}.topology-canvas{height:340px;position:relative;display:flex;flex-direction:column;align-items:center;padding-top:18px;background:radial-gradient(circle at 50% 20%,#eff5ff,transparent 45%)}.topo-node{z-index:1;width:100px;height:54px;border:1px solid #b8c9dd;border-radius:12px;background:var(--surface);display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--accent);box-shadow:0 6px 15px #193a5e0a}.topo-node svg{margin-bottom:5px}.topo-node small,.clients small{font:500 8px DM Mono;color:var(--muted)}.cloud{color:var(--violet);background:#f1efff}.router-node{margin-top:15px}.switch-node{margin-top:15px;color:var(--orange)}.connector{height:24px;width:1px;background:#9eb8d6;position:relative}.branches{position:absolute;top:252px;width:78%;display:grid;grid-template-columns:1fr 1fr 1fr;gap:0}.branches div{height:50px;border-top:1px solid #9eb8d6;position:relative}.branches div:before{content:"";position:absolute;left:50%;top:0;height:50px;border-left:1px solid #9eb8d6}.clients{position:absolute;top:299px;width:86%;display:grid;grid-template-columns:repeat(3,1fr);justify-items:center}.clients span{display:flex;flex-direction:column;align-items:center;gap:5px;color:var(--cyan);background:var(--surface);padding:8px 14px;border:1px solid #ccd8e6;border-radius:9px}.topology-foot{border-top:1px solid var(--line);padding-top:14px;letter-spacing:0}.topology-foot strong{font-size:14px;color:var(--text);margin-right:4px}.topology-foot button{display:flex;align-items:center;gap:7px;color:var(--accent);background:transparent;font:500 10px DM Mono}.home-section{padding-top:66px}.section-heading{display:flex;justify-content:space-between;align-items:end;margin-bottom:22px}.section-heading h2{font-size:25px;letter-spacing:-.05em;margin:9px 0 0}.link-button{display:inline-flex;align-items:center;gap:8px;background:transparent;color:var(--accent);font-size:11px}.continue-section{padding-top:25px}.continue-card{display:flex;align-items:center;gap:18px;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:22px 25px;box-shadow:var(--shadow)}.continue-icon,.tile-icon{width:49px;height:49px;display:grid;place-items:center;background:var(--accent-soft);border-radius:12px;color:var(--accent);flex:0 0 auto}.continue-body{flex:1}.continue-body h2{margin:7px 0;font-size:18px;letter-spacing:-.03em}.continue-body p{margin:0;color:var(--muted);font-size:12px}.continue-progress{display:flex;align-items:center;gap:18px}.ring{width:58px;height:58px;border-radius:50%;display:grid;place-items:center;background:radial-gradient(circle,#fff 57%,transparent 59%),conic-gradient(var(--accent) 0 30%,#e6eaf1 30%)}.ring b{font:800 13px DM Mono}.ring small{font-size:9px}.focus-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.course-tile{min-width:0;display:grid;grid-template-columns:44px 1fr auto;gap:13px;align-items:center;text-align:left;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:16px 15px;box-shadow:0 5px 16px #21345207}.course-tile:hover{border-color:#9eadc2;transform:translateY(-2px);box-shadow:var(--shadow)}.tile-copy strong,.tile-copy small{display:block}.tile-copy strong{font-size:13px}.tile-copy small{color:var(--muted);font-size:10px;line-height:1.45;margin-top:4px}.tile-meta{grid-column:2;display:flex;gap:10px;color:var(--soft);font:9px DM Mono}.course-tile>svg{grid-column:3;grid-row:1/3;color:var(--accent)}.tone-cyan .tile-icon{background:#e4f6f7;color:var(--cyan)}.tone-violet .tile-icon{background:#eeeaff;color:var(--violet)}.tone-green .tile-icon{background:#e7f5ed;color:var(--green)}.tone-orange .tile-icon{background:#fff2e3;color:var(--orange)}.tone-yellow .tile-icon{background:#fff6d9;color:#9a7410}.tone-red .tile-icon{background:#ffebee;color:var(--red)}.course-list{display:grid;grid-template-columns:repeat(2,1fr);gap:11px;padding-bottom:85px}.course-tile.compact{box-shadow:none}.standard-page{padding-top:65px;padding-bottom:90px;max-width:1280px}.standard-page h1{font-size:46px;letter-spacing:-.07em;margin:10px 0}.page-lead{color:var(--muted);max-width:660px;font-size:15px;line-height:1.7;margin:0}.filter-bar{display:flex;gap:7px;overflow-x:auto;margin:34px 0 20px;padding-bottom:4px}.filter-bar button{white-space:nowrap;background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:9px 13px;font-size:11px;color:var(--muted)}.filter-bar button.active{background:var(--accent);color:#fff;border-color:var(--accent)}.course-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.lesson-card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:19px;min-height:290px;display:flex;flex-direction:column;box-shadow:0 5px 16px #21345206}.lesson-card:hover{border-color:#a0aec3;transform:translateY(-2px)}.card-line{display:flex;justify-content:space-between;align-items:start;margin-bottom:22px}.line-icon{display:grid;place-items:center;width:38px;height:38px;border-radius:10px;background:var(--accent-soft);color:var(--accent)}.importance{font:500 9px DM Mono;color:var(--muted);background:var(--surface-2);padding:6px 8px;border-radius:5px}.importance.important{color:var(--orange);background:#fff1df}.importance.critical{color:var(--red);background:#ffebee}.lesson-card h2{font-size:17px;line-height:1.25;letter-spacing:-.03em;margin:8px 0}.lesson-card p{font-size:11px;color:var(--muted);line-height:1.65;margin:0}.tags{display:flex;gap:7px;flex-wrap:wrap;margin-top:12px}.tags span{color:var(--soft);font:9px DM Mono}.card-footer{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line);padding-top:14px;margin-top:auto;color:var(--soft);font:10px DM Mono}.card-footer button{display:flex;align-items:center;gap:7px;color:var(--accent);background:transparent;font:500 10px DM Mono}.path-strip{margin-top:36px;background:linear-gradient(105deg,#1f2c87,#354ee9);color:#fff;border-radius:15px;padding:22px 25px;display:flex;justify-content:space-between;align-items:center}.path-strip h2{margin:8px 0 4px;font-size:19px}.path-strip p{margin:0;color:#cdd5ff;font-size:11px}.path-strip .section-kicker{color:#aeb9ff}.path-strip .button{background:#fff;color:var(--accent)}.lesson-shell{padding-top:28px;padding-bottom:100px}.lesson-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:29px}.back-link{background:transparent;color:var(--muted);font-size:11px}.lesson-id{font:10px DM Mono;color:var(--soft)}.lesson-layout{display:grid;grid-template-columns:205px minmax(0,770px) 170px;gap:45px;align-items:start}.lesson-nav{position:sticky;top:100px}.course-nav-title{display:flex;align-items:center;gap:10px;margin-bottom:23px}.course-nav-title .tile-icon{width:39px;height:39px}.course-nav-title strong,.course-nav-title small{display:block}.course-nav-title strong{font-size:12px}.course-nav-title small{font-size:9px;color:var(--muted);margin-top:3px}.course-nav-progress{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:12px 0;margin-bottom:13px}.course-nav-progress>span:first-child{display:flex;justify-content:space-between;font:9px DM Mono;color:var(--soft);margin-bottom:8px}.course-nav-progress b{color:var(--accent)}.lesson-nav-item{display:flex;gap:8px;width:100%;background:transparent;color:var(--muted);text-align:left;font-size:10px;line-height:1.45;padding:9px 7px;border-radius:7px}.lesson-nav-item span{color:var(--soft)}.lesson-nav-item:hover,.lesson-nav-item.active{background:var(--accent-soft);color:var(--accent)}.lesson-content{max-width:770px}.lesson-content h1{font-size:50px;line-height:1.08;letter-spacing:-.075em;margin:13px 0 18px}.lesson-intro{font-size:17px;color:var(--muted);line-height:1.7;margin:0;max-width:710px}.lesson-facts{display:flex;gap:18px;flex-wrap:wrap;border-bottom:1px solid var(--line);padding:21px 0 25px;margin-bottom:27px;color:var(--muted);font:10px DM Mono}.lesson-facts b{font-family:Manrope;color:var(--text);margin-right:6px}.red-dot{font-style:normal;color:var(--red)}.lesson-content>h2{font-size:23px;letter-spacing:-.04em;margin:37px 0 14px}.lesson-content>p{font-size:15px;line-height:1.8;color:#43536b;margin:0 0 17px}.info-block{display:flex;gap:13px;border-radius:11px;padding:17px 18px;margin:22px 0;background:#eff6ff;border-left:3px solid var(--cyan)}.info-block .info-icon{font-size:18px;color:var(--cyan);line-height:1}.info-block strong{font-size:12px}.info-block p{font-size:12px;line-height:1.65;color:#56667c;margin:6px 0 0}.info-block.goal{background:#edf7fc;border-color:var(--cyan)}.info-block.exam{background:#f1edff;border-color:var(--violet)}.info-block.exam .info-icon{color:var(--violet)}.info-block.mistake{background:#fff0f2;border-color:var(--red)}.info-block.mistake .info-icon{color:var(--red)}.info-block.check{background:#ebf8f0;border-color:var(--green)}.info-block.check .info-icon{color:var(--green)}.info-block.lab{background:#fff4e6;border-color:var(--orange)}.info-block.lab .info-icon{color:var(--orange)}.step-list{border-left:1px solid #cbd7e6;margin:22px 0}.step{display:flex;gap:15px;margin-left:-14px;padding:0 0 24px}.step-number{width:27px;height:27px;border-radius:50%;background:var(--surface);border:1px solid #b7c8dc;color:var(--accent);display:grid;place-items:center;flex:0 0 auto;font:500 10px DM Mono}.step h3{font-size:14px;margin:3px 0 6px}.step p{font-size:13px;color:#596a80;line-height:1.7;margin:0}.command-list{display:grid;gap:12px}.command{overflow:hidden;border:1px solid #273c57;background:#101c2c;border-radius:11px;color:#d6e3f0}.command-head{display:flex;justify-content:space-between;align-items:center;padding:10px 13px;border-bottom:1px solid #293d56}.command-head span{display:flex;align-items:center;gap:4px}.command-head i{width:6px;height:6px;border-radius:50%;background:#ee7c7c}.command-head i:nth-child(2){background:#edc06b}.command-head i:nth-child(3){background:#66d6a0}.command-head b{font:500 9px DM Mono;color:#91a5bd;margin-left:7px}.command-head button{background:transparent;color:#8bdbe2;font:500 9px DM Mono}.command>code{display:block;padding:15px 14px 4px;font:12px DM Mono;color:#9eebbd;white-space:pre-wrap;overflow:auto}.command>code span{color:#72b8df}.command>p{color:#93a5bb;font-size:10px;margin:5px 14px 14px;line-height:1.5}.quiz{border:1px solid #c3cbff;background:#f0f1ff;border-radius:13px;padding:20px;margin:28px 0}.quiz h2{font-size:17px;margin:8px 0 17px}.quiz-options{display:flex;gap:8px;flex-wrap:wrap}.quiz-options button{display:flex;align-items:center;gap:9px;background:#fff;border:1px solid #d1d6f3;border-radius:8px;padding:10px 12px;font-size:11px}.quiz-options button span{display:grid;place-items:center;width:20px;height:20px;border-radius:5px;background:#eef0ff;color:var(--accent);font:500 10px DM Mono}.quiz-options button.correct{background:#e5f7ed;border-color:#79c99e}.quiz-options button.wrong{background:#ffeaee;border-color:#e79aa8}.quiz-good,.quiz-bad{font-size:11px!important;margin:14px 0 0!important;color:var(--green)!important}.quiz-bad{color:var(--red)!important}.complete-button{display:inline-flex;align-items:center;gap:12px;background:var(--accent);color:#fff;padding:13px 17px;border-radius:8px;font-weight:800;font-size:11px;margin-top:14px}.complete-button.completed{background:#dff2e7;color:var(--green)}.source-line{border-top:1px solid var(--line);padding-top:16px;margin-top:32px;color:var(--soft);font-size:10px;line-height:1.6}.source-line p{margin:5px 0}.lesson-aside{position:sticky;top:100px;border-left:1px solid var(--line);padding-left:16px}.aside-sticky{font-size:10px;color:var(--muted)}.aside-sticky>a{display:block;margin:13px 0;color:var(--muted)}.aside-sticky>a:hover{color:var(--accent)}.shortcut{border-top:1px solid var(--line);padding-top:16px;margin-top:25px}.shortcut small,.shortcut b,.shortcut span{display:block}.shortcut small{font:500 9px DM Mono;color:var(--soft)}.shortcut b{color:var(--text);margin:7px 0;font-size:11px}.shortcut span{line-height:1.6}.lesson-bottom{display:none}.empty-state{margin-top:40px;max-width:580px;text-align:center;padding:65px 30px;border:1px dashed #bbc8d9;background:var(--surface);border-radius:16px}.empty-state p{color:var(--muted);font-size:13px;line-height:1.7}.empty-icon{width:64px;height:64px;display:grid;place-items:center;background:var(--accent-soft);color:var(--accent);border-radius:15px;margin:0 auto 20px}.metric-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:13px;overflow:hidden;margin:40px 0 20px}.metric-grid>div{padding:20px 22px;background:var(--surface)}.metric-grid span,.metric-grid em{display:block;font:500 9px DM Mono;color:var(--soft);font-style:normal}.metric-grid strong{display:block;font:800 28px Manrope;margin:10px 0}.metric-grid strong small{font:500 12px DM Mono;color:var(--muted)}.dashboard-columns{display:grid;grid-template-columns:1.4fr 1fr;gap:15px}.content-panel,.mentor-note,.tool-feature,.tool-box,.cheat-panel,.exam-task,.exam-rail .content-panel{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:20px}.panel-heading{display:flex;justify-content:space-between;align-items:center}.panel-heading h2{font-size:16px;margin:0}.badge{font:500 9px DM Mono;color:var(--accent);background:var(--accent-soft);padding:5px 7px;border-radius:5px}.lesson-line{width:100%;display:flex;align-items:center;gap:12px;text-align:left;background:transparent;border-top:1px solid var(--line);padding:13px 0;margin-top:10px}.lesson-line strong,.lesson-line small{display:block}.lesson-line strong{font-size:12px}.lesson-line small{font-size:10px;color:var(--muted);margin-top:3px}.lesson-line em{margin-left:auto;color:var(--accent);font:500 10px DM Mono;font-style:normal}.mentor-note{background:#1d286c;color:#fff}.mentor-note .section-kicker{color:#aeb9ff}.note-symbol{font-size:25px;color:#b6c0ff;margin-bottom:22px}.mentor-note h2{font-size:21px;line-height:1.25;margin:10px 0}.mentor-note p{color:#c8d0ff;font-size:11px;line-height:1.7}.mentor-note .link-button{color:#fff;margin-top:8px}.tools-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:14px;margin-top:35px}.tool-feature{grid-column:1/-1}.tool-heading{display:flex;align-items:center;gap:13px}.tool-heading h2,.tool-box h2{font-size:17px;margin:0}.tool-heading p,.tool-box>p{font-size:11px;color:var(--muted);margin:5px 0}.tool-inputs{display:flex;gap:14px;margin:27px 0 18px}.tool-inputs label{display:block;flex:1;color:var(--muted);font:10px DM Mono}.tool-inputs input:not([type=range]){display:block;width:100%;margin-top:8px;padding:11px;background:var(--bg);border:1px solid var(--line);border-radius:7px;color:var(--text);font:12px DM Mono}.tool-inputs input[type=range]{width:100%;margin-top:19px;accent-color:var(--accent)}.tool-inputs b{color:var(--accent)}.result-grid{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:9px;overflow:hidden}.result-grid div{padding:13px;background:var(--surface-2);border-right:1px solid var(--line)}.result-grid div:last-child{border:0}.result-grid small,.result-grid b{display:block}.result-grid small{font:500 9px DM Mono;color:var(--soft);margin-bottom:7px}.result-grid b{font:11px DM Mono;color:var(--cyan)}.formula{font:10px/1.6 DM Mono;color:var(--muted);margin:15px 0 0}.tool-number{display:block;color:var(--accent);font:500 25px DM Mono;margin-bottom:19px}.port-table{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:20px 0}.port-table span{font:11px DM Mono;color:var(--muted)}.port-table b{display:inline-block;width:45px;color:var(--cyan)}.wire-strip{display:flex;gap:3px;height:28px;margin:24px 0}.wire-strip i{flex:1;border-radius:3px}.white-orange{background:repeating-linear-gradient(135deg,#fff 0,#fff 6px,#ed9c6c 6px,#ed9c6c 10px)}.orange{background:#ed9c6c}.white-green{background:repeating-linear-gradient(135deg,#fff 0,#fff 6px,#68ae85 6px,#68ae85 10px)}.green{background:#68ae85}.blue{background:#75a7d2}.white-blue{background:repeating-linear-gradient(135deg,#fff 0,#fff 6px,#75a7d2 6px,#75a7d2 10px)}.white-brown{background:repeating-linear-gradient(135deg,#fff 0,#fff 6px,#a9795c 6px,#a9795c 10px)}.brown{background:#a9795c}.cheat-actions{display:flex;justify-content:flex-end;margin-top:-35px;margin-bottom:20px}.cheat-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.cheat-panel h3{font:500 10px DM Mono;color:var(--soft);letter-spacing:.1em;margin:0 0 15px}.cheat-panel>div{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding:10px 0;font-size:11px}.cheat-panel b{font:500 11px DM Mono;color:var(--cyan)}.cheat-panel span{color:var(--muted)}.cheat-panel code{font-size:10px;background:transparent;padding:0}.exam-hero{display:flex;justify-content:space-between;align-items:center;background:linear-gradient(110deg,#1d286c,#364fe1);color:#fff;border-radius:15px;padding:24px 27px;margin-top:37px}.exam-hero h2{margin:9px 0;font-size:23px}.exam-hero p{margin:0;color:#cdd5ff;font-size:12px}.exam-hero .section-kicker{color:#aeb9ff}.exam-timer{text-align:right}.exam-timer small{font:500 9px DM Mono;color:#c1cbff}.exam-timer b{display:block;font:500 28px DM Mono;color:#fff;margin:5px 0}.exam-timer button{background:#fff;color:var(--accent);border-radius:6px;padding:6px 10px;font-size:10px}.exam-layout{display:grid;grid-template-columns:1.4fr 1fr;gap:14px;margin-top:15px}.exam-task label{display:block;color:var(--muted);font-size:12px;padding:10px 0;border-top:1px solid var(--line)}.exam-task h2{font-size:19px;margin:0 0 15px}.exam-task h3{font-size:13px;margin-top:27px}.exam-task textarea{display:block;width:100%;height:140px;background:var(--bg);border:1px solid var(--line);border-radius:7px;padding:12px;resize:vertical;font-size:11px;margin-bottom:15px}.exam-rail{display:grid;gap:14px;align-content:start}.exam-rail p{font-size:11px;color:var(--muted);margin:13px 0}.exam-rail p b{color:var(--cyan)}.not-found{text-align:center;padding:120px 25px}.not-code{font:800 72px DM Mono;color:var(--accent)}.not-found h1{font-size:29px;letter-spacing:-.06em}.not-found p{color:var(--muted);font-size:14px}:root[data-theme=dark]{--bg:#0d1625;--surface:#142136;--surface-2:#1b2b43;--line:#2a3b55;--text:#edf3fc;--muted:#a0aec1;--soft:#72839c;--accent:#8290ff;--accent-soft:#252d5b;--cyan:#53d3df;--green:#63d4a2;--orange:#f0b364;--red:#ff8599;--violet:#a996ff;--shadow:0 18px 50px #0002}.topbar{background:#0d1625e8}.hero-copy h1 span{color:var(--cyan)}.topology{background:var(--surface);border-color:var(--line)}.topology-canvas{background:radial-gradient(circle at 50% 20%,#1d2d4b,transparent 48%)}.topo-node{background:#172a45;border-color:#3c5576}.cloud{background:#282852}.continue-card,.course-tile,.lesson-card,.content-panel,.mentor-note,.tool-feature,.tool-box,.cheat-panel,.exam-task,.exam-rail .content-panel,.empty-state{box-shadow:none}.ring{background:radial-gradient(circle,#142136 57%,transparent 59%),conic-gradient(var(--accent) 0 30%,#2d405d 30%)}.lesson-content>p{color:#c0ccdc}.step p,.info-block p{color:#b5c3d5}.info-block.goal{background:#172f43}.info-block.exam{background:#28244f}.info-block.mistake{background:#412735}.info-block.check{background:#183d38}.info-block.lab{background:#493522}.quiz{background:#272a56;border-color:#515db0}.quiz-options button{background:var(--surface);border-color:var(--line)}.tool-inputs input:not([type=range]),.exam-task textarea{background:#0d1828}.result-grid div{background:#1b2b43}.path-strip{background:linear-gradient(110deg,#222c72,#4355de)}.avatar-stack i{border-color:var(--bg)}@media (max-width:1120px){.lesson-layout{grid-template-columns:190px minmax(0,1fr)}.lesson-aside{display:none}.focus-grid,.course-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width:760px){.sidebar{position:fixed;z-index:30;left:-270px;top:0;bottom:0;transition:left .25s ease;box-shadow:15px 0 35px #0002}.sidebar.open{left:0}.mobile-menu,.mobile-wordmark{display:grid}.mobile-wordmark{background:transparent;font:500 15px DM Mono;letter-spacing:.08em}.mobile-wordmark b{color:var(--cyan)}.topbar{height:64px;padding:0 17px;gap:10px}.search-trigger{padding:9px;flex:1}.search-trigger kbd,.search-trigger span{display:none}.search-trigger svg{margin:auto}.top-actions{gap:5px}.theme-icon{display:none}.home-hero{display:block;padding-top:48px;min-height:0}.hero-copy h1{font-size:65px}.hero-copy>p{font-size:14px}.topology{margin-top:47px}.topology-canvas{height:285px}.branches{top:218px}.clients{top:265px}.home-section,.standard-page,.lesson-shell{padding-left:17px;padding-right:17px}.section-heading{display:block}.section-heading .link-button{margin-top:13px}.continue-card{align-items:flex-start;flex-wrap:wrap;padding:17px}.continue-progress{width:100%;justify-content:space-between;margin-top:9px}.course-list,.course-grid,.tools-grid,.cheat-grid,.dashboard-columns,.exam-layout{grid-template-columns:1fr}.course-grid{gap:10px}.standard-page{padding-top:43px}.standard-page h1{font-size:38px}.page-lead{font-size:13px}.path-strip{display:block}.path-strip .button{margin-top:17px}.lesson-top{align-items:flex-start;gap:12px;flex-direction:column}.lesson-layout{display:block}.lesson-nav{position:static;margin-bottom:28px}.lesson-nav-item{display:inline-flex;width:auto;margin:3px 4px 0 0;background:var(--surface);border:1px solid var(--line)}.course-nav-progress{margin-bottom:8px}.lesson-content h1{font-size:38px}.lesson-intro{font-size:15px}.lesson-content>p{font-size:14px}.lesson-bottom{display:flex;position:fixed;z-index:15;bottom:0;left:0;right:0;background:var(--surface);border-top:1px solid var(--line);justify-content:space-between;padding:10px 14px}.lesson-bottom button{background:transparent;color:var(--accent);font-size:10px}.lesson-bottom button:nth-child(2){background:var(--accent);color:#fff;padding:9px 12px;border-radius:7px;font-weight:800}.metric-grid{grid-template-columns:1fr}.result-grid{grid-template-columns:1fr 1fr}.tool-inputs{display:block}.tool-inputs label+label{display:block;margin-top:16px}.cheat-actions{margin-top:22px;justify-content:flex-start}.exam-hero{align-items:flex-start;flex-direction:column;gap:20px}.exam-timer{text-align:left}.not-found{padding:80px 20px}}@media (prefers-reduced-motion:reduce){*,*:before,*:after{transition:none!important;animation:none!important;scroll-behavior:auto!important;transform:none!important}}@media print{.sidebar,.topbar,.cheat-actions{display:none}.main,.page-wrap,.standard-page{padding:0}.cheat-grid{grid-template-columns:1fr 1fr}.cheat-panel{break-inside:avoid}}.test-controls{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-top:36px;padding-bottom:24px;border-bottom:1px solid var(--line)}.test-controls strong{font-size:14px}.test-list{max-width:820px}.test-question{padding:26px 0;border-bottom:1px solid var(--line)}.test-question h2{font-size:19px;line-height:1.45;margin:9px 0 17px}.test-score{display:flex;align-items:center;gap:14px;margin-top:25px;padding:22px;background:var(--accent-soft);border-radius:12px;color:var(--muted)}.test-score strong{font:800 30px DM Mono;color:var(--accent)}.glossary-search{width:100%;max-width:580px;padding:14px 16px;margin:34px 0 22px;background:var(--surface);border:1px solid var(--line);border-radius:9px;color:var(--text);font-size:14px}.glossary-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:12px;overflow:hidden}.glossary-grid button{display:block;text-align:left;background:var(--surface);padding:17px}.glossary-grid strong,.glossary-grid span{display:block}.glossary-grid strong{font:600 13px DM Mono;color:var(--accent)}.glossary-grid span{font-size:11px;line-height:1.55;color:var(--muted);margin-top:7px}.plan-options{display:flex;gap:8px;flex-wrap:wrap;margin:34px 0 22px}.plan-options button{padding:11px 14px;border:1px solid var(--line);border-radius:8px;background:var(--surface);color:var(--muted)}.plan-options button.active{background:var(--accent);border-color:var(--accent);color:#fff}.plan-list{max-width:820px;border-top:1px solid var(--line)}.plan-list button{display:grid;grid-template-columns:40px 1fr auto 20px;gap:12px;align-items:center;width:100%;padding:15px 5px;border-bottom:1px solid var(--line);background:transparent;text-align:left}.plan-list button>span{font:500 11px DM Mono;color:var(--soft)}.plan-list strong{font-size:13px}.plan-list small{font:10px DM Mono;color:var(--muted)}.plan-list svg{color:var(--accent)}.lab-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:36px;padding-bottom:85px}.lab-grid .tool-box{min-height:230px}.lab-flow{display:grid;gap:6px;margin:20px 0}.lab-flow button{display:grid;grid-template-columns:25px 1fr auto;gap:10px;align-items:center;padding:10px;background:var(--surface-2);border:1px solid transparent;border-radius:7px;text-align:left;color:var(--muted);font:11px DM Mono}.lab-flow button.active{border-color:var(--accent);color:var(--accent)}.lab-flow b{display:grid;place-items:center;width:22px;height:22px;border-radius:50%;background:var(--accent-soft)}.lab-flow small{font:10px Manrope;color:var(--soft)}.permission-result{margin-top:15px;padding:15px;background:var(--surface-2);border-radius:8px}.permission-result strong{display:flex;gap:10px;font:700 17px DM Mono;color:var(--cyan)}.permission-result small{display:block;margin-top:8px;color:var(--muted);font-size:10px}.trainer-line{display:flex;align-items:center;gap:7px;margin-top:22px;padding:13px;background:#101c2c;border-radius:8px;color:#9eebbd;font:11px DM Mono;overflow:auto}.trainer-line input{min-width:170px;flex:1;background:transparent;border:0;outline:0;color:#fff;font:11px DM Mono}.vlan-table{display:grid;grid-template-columns:90px 1fr;gap:0;margin-top:18px;border-top:1px solid var(--line)}.vlan-table>*{padding:10px 0;border-bottom:1px solid var(--line);font-size:11px}.vlan-table b{font:10px DM Mono;color:var(--cyan)}.dns-path{display:flex;align-items:center;justify-content:space-between;gap:7px;margin-top:23px;flex-wrap:wrap}.dns-path span,.dns-path strong{padding:10px;border-radius:7px;background:var(--surface-2);font:10px DM Mono}.dns-path strong{color:var(--green)}.dns-path i{color:var(--accent)}@media (max-width:760px){.test-controls{display:block}.test-controls .button{margin-top:10px}.glossary-grid,.lab-grid{grid-template-columns:1fr}.plan-list button{grid-template-columns:30px 1fr 20px}.plan-list small{grid-column:2}.dns-path{justify-content:flex-start}.dns-path i{display:none}}.screenshot-figure{margin:24px 0}.screenshot-trigger{display:block;width:100%;padding:0;background:var(--surface-2);border:1px solid var(--line);border-radius:12px;overflow:hidden}.screenshot-trigger img{display:block;width:100%;height:auto}.screenshot-figure figcaption{padding:10px 2px;color:var(--muted);font-size:11px;line-height:1.5}.screenshot-figure figcaption small{display:block;color:var(--soft);font-size:10px;margin-top:3px}.lightbox{position:fixed;top:0;right:0;bottom:0;left:0;z-index:100;display:grid;place-items:center;padding:30px;background:#07101ddd}.lightbox img{max-width:min(1100px,94vw);max-height:88vh;border-radius:12px}.lightbox button{position:absolute;top:20px;right:28px;background:transparent;color:#fff;font-size:36px}:root{--bg:#eef3f7;--surface:#ffffff;--surface-2:#e4edf2;--line:#d3e0e8;--text:#102238;--muted:#52677b;--soft:#8295a6;--accent:#155eef;--accent-soft:#e4edff;--cyan:#007f91;--green:#18794e;--orange:#a25a12;--red:#b33b51;--violet:#6246c9;--shadow:0 20px 60px rgba(16,34,56,.1)}body{font-size:16px}.main{background:linear-gradient(180deg,#eef3f7,#f7f9fb 58%,#eef3f7)}.sidebar{background:#102238;color:#edf5fb;border-right:0;box-shadow:16px 0 50px #1022381f}.brand strong{color:#fff}.brand small,.side-title{color:#9eb5c8}.side-link{color:#b7cad8}.side-link svg{color:#91abc0}.side-link:hover,.side-link.selected{background:#1c3855;color:#fff}.side-link.selected svg{color:#6de0e8}.count{background:#294461;color:#cbe1ed}.foot-progress{border-color:#294461}.theme-switch{color:#b7cad8}.topbar{background:#f7fafce6;border-color:#d3e0e8}.hero-copy h1{font-weight:900;color:#102238}.hero-copy h1 span{color:#087f91}.home-hero{min-height:650px}.topology{border:0;box-shadow:0 24px 65px #10223821;background:#fff}.topology-head{color:#6d8292}.continue-card,.course-tile,.lesson-card,.content-panel,.mentor-note,.tool-feature,.tool-box,.cheat-panel,.exam-task,.exam-rail .content-panel{box-shadow:0 12px 30px #1022380f}.section-heading h2,.standard-page h1{color:#102238}.lesson-content>p{font-size:17px;line-height:1.75;color:#304b62}.lesson-content h1{font-weight:900}.lesson-content>h2{margin-top:52px}.info-block{padding:20px 21px;border-radius:12px}.info-block strong{font-size:13px}.lab-grid{gap:20px}.lab-grid .tool-box{padding:25px}.tomorrow-hero{display:flex;align-items:center;gap:18px;margin-top:38px;padding:25px 28px;border-radius:15px;background:#102238;color:#fff}.tomorrow-hero strong{font-size:22px}.tomorrow-hero span{color:#bdd1df;font-size:12px}.tomorrow-list{max-width:900px;margin:24px 0 90px;border-top:1px solid var(--line)}.tomorrow-list a{display:grid;grid-template-columns:50px 1fr 20px;gap:16px;align-items:center;padding:21px 8px;border-bottom:1px solid var(--line);color:var(--text);text-decoration:none}.tomorrow-list a:hover{background:#e4edff}.tomorrow-list a>span{font:500 13px DM Mono;color:var(--accent)}.tomorrow-list strong,.tomorrow-list small{display:block}.tomorrow-list small{color:var(--muted);font-size:12px;line-height:1.5;margin-top:5px}.tomorrow-list svg{color:var(--accent)}:root[data-theme=dark]{--bg:#0e1b2c;--surface:#162a41;--surface-2:#1d3550;--line:#2c4863;--text:#edf5fb;--muted:#b0c0cf;--soft:#7f97aa;--accent:#89a2ff;--accent-soft:#283b70;--shadow:0 20px 60px rgba(0,0,0,.18)}:root[data-theme=dark] .main{background:linear-gradient(180deg,#0e1b2c,#102238)}:root[data-theme=dark] .topbar{background:#0e1b2ceb}:root[data-theme=dark] .sidebar{background:#091522}:root[data-theme=dark] .hero-copy h1,:root[data-theme=dark] .section-heading h2,:root[data-theme=dark] .standard-page h1{color:var(--text)}:root[data-theme=dark] .tomorrow-hero{background:#1d3550}@media (max-width:760px){.home-hero{min-height:0}.tomorrow-hero{display:block}.tomorrow-hero span{display:block;margin-top:8px}.tomorrow-list a{grid-template-columns:34px 1fr 20px}.tomorrow-list strong{font-size:13px}.tomorrow-list small{font-size:11px}}.exam-progress{display:flex;align-items:center;gap:18px;max-width:820px;margin:36px 0 20px}.exam-progress strong{font:700 14px DM Mono;white-space:nowrap;color:var(--accent)}.exam-progress .progress-track{flex:1}.exam-progress small{color:var(--muted);font-size:11px;white-space:nowrap}.theory-card{max-width:820px;background:var(--surface);border:1px solid var(--line);border-radius:15px;padding:28px;box-shadow:var(--shadow)}.theory-card h2{font-size:23px;line-height:1.45;margin:13px 0 24px}.theory-actions{display:flex;justify-content:space-between;gap:12px;margin-top:30px;padding-top:20px;border-top:1px solid var(--line)}@media (max-width:760px){.exam-progress{gap:9px}.exam-progress small{display:none}.theory-card{padding:20px}.theory-card h2{font-size:18px}.theory-actions{display:grid;grid-template-columns:1fr}.theory-actions .button{justify-content:center}}.practice-section{padding-top:78px}.practice-row{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.practice-row button{display:grid;grid-template-columns:42px 1fr 16px;column-gap:11px;align-items:center;text-align:left;background:transparent;border-bottom:1px solid var(--line);padding:14px 6px 18px}.practice-row button:hover{border-color:var(--accent);transform:translateY(-2px)}.practice-icon{grid-row:1/3;display:grid;place-items:center;width:42px;height:42px;border-radius:12px;background:var(--accent-soft);color:var(--accent)}.practice-row strong,.practice-row small{display:block}.practice-row strong{font-size:13px}.practice-row small{font:10px DM Mono;color:var(--muted);margin-top:4px}.practice-row svg:last-child{grid-column:3;grid-row:1/3;color:var(--accent)}@media (max-width:760px){.practice-row{grid-template-columns:1fr 1fr}.practice-row button{grid-template-columns:38px 1fr 15px}.practice-icon{width:38px;height:38px}}:root{--radius-sm:10px;--radius-md:16px;--radius-lg:24px;--card-shadow:0 10px 34px rgba(16,34,56,.055);--card-shadow-hover:0 18px 46px rgba(16,34,56,.1)}body{letter-spacing:-.008em}.app-shell{min-height:100vh}.main{min-width:0}.page-wrap{min-height:calc(100vh - 72px)}button,a{transition:background-color .18s ease,border-color .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid color-mix(in srgb,var(--accent) 28%,transparent);outline-offset:2px}.sidebar{width:244px;padding:18px 14px 16px;background:linear-gradient(180deg,#10263d,#0d2034)}.brand{height:60px;padding:8px 10px;border-radius:14px}.brand:hover{background:#ffffff0a}.brand-symbol{width:40px;height:40px;border-radius:12px;box-shadow:0 9px 22px #07182d55}.brand strong{font-size:15px;letter-spacing:.11em}.brand small{font-size:8px;letter-spacing:.08em}.side-group{margin-top:22px}.side-title{padding:0 12px;margin-bottom:7px;font-size:8px;letter-spacing:.13em}.side-link{min-height:43px;margin:2px 0;padding:0 11px;border-radius:11px;font-size:12px}.side-link:hover{background:#ffffff0b;transform:translate(2px)}.side-link.selected{background:linear-gradient(90deg,#214968,#1b3e5d);box-shadow:inset 3px 0 #59d7e1}.side-link.selected svg{color:#72e5eb}.count{min-width:24px;padding:3px 6px;border-radius:999px;text-align:center}.sidebar-foot{padding:14px 10px 4px}.foot-progress{padding-top:14px}.progress-track{border-radius:99px;overflow:hidden}.progress-track i{border-radius:99px}.topbar{height:72px;padding:0 clamp(18px,4vw,52px);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);box-shadow:0 1px 0 var(--line);z-index:20}.search-trigger{width:min(550px,55vw);height:42px;border-radius:12px;background:var(--surface);box-shadow:0 4px 16px #10223806}.search-trigger:hover{border-color:color-mix(in srgb,var(--accent) 35%,var(--line));box-shadow:0 7px 20px #1022380e}.search-trigger kbd{border-radius:7px}.profile{width:38px;height:38px;border-radius:11px;background:linear-gradient(135deg,#ffc28e,#eaa66b);box-shadow:0 8px 18px #c77c3940}.home-hero{max-width:1240px;margin:0 auto;padding:74px clamp(22px,4vw,64px) 56px;gap:clamp(40px,6vw,82px);align-items:center}.hero-copy{max-width:590px}.hero-copy h1{font-size:clamp(72px,7vw,112px);line-height:.82;letter-spacing:-.075em;margin:24px 0 30px}.hero-copy>p{max-width:570px;font-size:16px;line-height:1.75;color:var(--muted)}.eyebrow{letter-spacing:.08em}.hero-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:30px}.button{border-radius:11px;min-height:44px}.button.primary{box-shadow:0 9px 22px color-mix(in srgb,var(--accent) 22%,transparent)}.button.primary:hover{transform:translateY(-2px);box-shadow:0 14px 30px color-mix(in srgb,var(--accent) 30%,transparent)}.button.quiet:hover,.button.ghost:hover{transform:translateY(-1px)}.button.ghost{display:inline-flex;align-items:center;gap:8px;padding:10px 14px;border:1px dashed var(--line);background:transparent;color:var(--muted);font-weight:700}.button.ghost:hover{border-style:solid;border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}.hero-note{margin-top:30px;padding-top:18px;border-top:1px solid var(--line)}.hero-note strong{font-size:11px}.hero-note small{font-size:9px}.topology{border-radius:24px;box-shadow:0 24px 70px #1022381f;overflow:hidden}.topology-head{padding:18px 20px}.topology-canvas{background:radial-gradient(circle at 50% 24%,color-mix(in srgb,var(--accent) 10%,transparent),transparent 47%)}.topology-foot{padding:13px 18px;border-top:1px solid var(--line)}.home-section{max-width:1240px;margin-left:auto;margin-right:auto;padding-left:clamp(22px,4vw,64px);padding-right:clamp(22px,4vw,64px)}.section-heading{align-items:end}.section-heading h2{font-size:clamp(24px,2.6vw,36px);letter-spacing:-.045em}.section-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap}.continue-section{padding-top:24px}.continue-card{border-radius:20px;padding:22px 24px;border-color:color-mix(in srgb,var(--accent) 18%,var(--line));background:linear-gradient(105deg,var(--surface),color-mix(in srgb,var(--accent-soft) 42%,var(--surface)));box-shadow:var(--card-shadow)}.continue-icon{border-radius:14px}.continue-body h2{font-size:20px;letter-spacing:-.025em}.continue-body p{font-size:11px}.ring{width:58px;height:58px}.focus-grid{gap:15px}.course-tile{position:relative;border-radius:17px;padding:19px;border-color:var(--line);box-shadow:var(--card-shadow);overflow:hidden}.course-tile:before{content:"";position:absolute;inset:0 0 auto;height:3px;background:var(--accent);opacity:.12}.course-tile:hover{transform:translateY(-4px);box-shadow:var(--card-shadow-hover);border-color:color-mix(in srgb,var(--accent) 24%,var(--line))}.course-tile:hover:before{opacity:.9}.tile-icon{border-radius:12px}.tile-copy strong{font-size:14px}.tile-copy small{font-size:10px;line-height:1.55}.tile-meta{font-size:9px}.tile-progress{height:4px;border-radius:99px;overflow:hidden}.tile-progress i{border-radius:99px}.practice-row{gap:14px}.practice-row button{padding:16px 10px;border:1px solid transparent;border-radius:14px}.practice-row button:hover{border-color:var(--line);background:var(--surface);box-shadow:var(--card-shadow);transform:translateY(-3px)}.practice-icon{border-radius:13px}.course-list{border-radius:18px;overflow:hidden;border:1px solid var(--line);background:var(--surface)}.course-list .course-tile.compact{border:0;border-bottom:1px solid var(--line);border-radius:0;box-shadow:none}.course-list .course-tile.compact:last-child{border-bottom:0}.course-list .course-tile.compact:hover{transform:none;background:var(--surface-2)}.lesson-shell{max-width:1460px;margin:0 auto}.lesson-layout{gap:34px}.lesson-nav{top:96px}.course-nav-title{padding-bottom:16px}.course-nav-progress{padding:13px 0 17px}.lesson-nav-item{min-height:38px;border-radius:9px;padding:8px 10px;font-size:10px}.lesson-nav-item:hover{background:var(--surface)}.lesson-nav-item.active{background:var(--accent-soft);color:var(--accent);font-weight:800}.lesson-content{max-width:820px}.lesson-content h1{font-size:clamp(46px,5vw,72px);line-height:.95;letter-spacing:-.065em}.lesson-intro{font-size:17px;line-height:1.65}.lesson-facts{padding:13px 0 18px;border-bottom:1px solid var(--line);gap:20px;flex-wrap:wrap}.lesson-facts span{font-size:10px}.lesson-reading{padding-top:8px}.lesson-reading>h2{font-size:27px;letter-spacing:-.035em}.step{padding:17px 0}.step-number{width:34px;height:34px;border-radius:10px;background:var(--accent-soft);display:grid;place-items:center}.lesson-aside{top:96px}.aside-sticky{border-left:0;padding:18px;border:1px solid var(--line);border-radius:14px;background:var(--surface);box-shadow:var(--card-shadow)}.aside-sticky>a{padding:7px 0}.shortcut{border-top:1px solid var(--line);margin-top:12px;padding-top:13px}.standard-page,.practice-page{max-width:1240px}.standard-page h1,.practice-page h1{letter-spacing:-.055em}.tool-feature,.tool-box,.content-panel,.exam-task,.theory-card{border-radius:17px!important;box-shadow:var(--card-shadow)!important}:root[data-theme=dark]{--card-shadow:0 14px 40px rgba(0,0,0,.11);--card-shadow-hover:0 20px 50px rgba(0,0,0,.18)}:root[data-theme=dark] .sidebar{background:linear-gradient(180deg,#081522,#0a1b2b)}:root[data-theme=dark] .topbar{box-shadow:0 1px 0 var(--line)}:root[data-theme=dark] .continue-card{background:linear-gradient(105deg,var(--surface),color-mix(in srgb,var(--accent-soft) 42%,var(--surface)))}@media (max-width:1120px){.sidebar{width:224px}.home-hero{gap:35px}.hero-copy h1{font-size:76px}.lesson-layout{gap:24px}}@media (max-width:760px){.sidebar{width:255px}.page-wrap{min-height:calc(100vh - 64px)}.topbar{padding:0 14px}.home-hero{padding:42px 20px 36px}.hero-copy h1{font-size:64px;line-height:.85;margin:20px 0 25px}.hero-copy>p{font-size:14px;line-height:1.72}.hero-actions{display:grid;grid-template-columns:1fr 1fr}.hero-actions .button{justify-content:center}.hero-actions .button.ghost{grid-column:1/-1}.topology{margin-top:36px;border-radius:20px}.home-section{padding-left:20px;padding-right:20px}.continue-card{padding:18px;border-radius:16px}.continue-body h2{font-size:17px}.section-heading h2{font-size:27px}.practice-row{grid-template-columns:1fr}.practice-row button{border-bottom:0;border:1px solid var(--line);background:var(--surface)}.lesson-shell{padding-bottom:65px}.lesson-content h1{font-size:44px}.lesson-intro{font-size:15px}.lesson-facts{gap:8px 15px}.lesson-nav{border:1px solid var(--line);border-radius:14px;padding:12px;background:var(--surface)}.lesson-nav-item{display:flex;width:100%;margin:3px 0}.lesson-bottom{-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);background:color-mix(in srgb,var(--surface) 92%,transparent)}.course-list{border-radius:14px}}:root{--line:#c7d6e1;--text:#0d2035;--muted:#40576e;--soft:#687f93}body{font-size:16px;line-height:1.55}.side-title,.section-kicker,.eyebrow{font-size:11px;font-weight:700;letter-spacing:.09em}.side-link{font-size:14px;font-weight:650}.brand small{font-size:10px}.theme-switch{font-size:13px}.search-trigger{font-size:13px;color:var(--muted)}.search-trigger kbd,.palette kbd{font-size:11px}.button{font-size:13px}.hero-copy>p{font-size:17px;line-height:1.75;color:var(--muted)}.hero-note{font-size:12px}.hero-note strong{font-size:13px}.hero-note small{font-size:11px;color:var(--muted)}.continue-body p{font-size:14px;line-height:1.6}.tile-copy strong{font-size:15px}.tile-copy small{font-size:12px;line-height:1.55;color:var(--muted)}.tile-meta{font-size:10px;color:var(--muted)}.link-button{font-size:12px;font-weight:700}.page-lead{font-size:16px;color:var(--muted)}.filter-bar button{font-size:12px}.lesson-card p{font-size:13px;line-height:1.65;color:var(--muted)}.card-footer,.card-footer button{font-size:11px}.lesson-nav-item{font-size:12px;line-height:1.5}.course-nav-title strong{font-size:13px}.course-nav-title small,.course-nav-progress>span:first-child{font-size:10px}.course-nav-count{font-size:11px;color:var(--muted)}.lesson-facts{font-size:11px}.lesson-content>p,.lesson-intro{color:#2d475f}.info-block strong{font-size:14px}.info-block p{font-size:14px;line-height:1.65;color:#40576e}.step h3{font-size:16px}.step p{font-size:14px;line-height:1.7;color:#40576e}.command>code{font-size:13px}.command>p{font-size:12px;line-height:1.55;color:#b7c5d3}.source-line{font-size:12px;color:var(--muted)}.aside-sticky{font-size:12px}.shortcut small{font-size:10px}.shortcut b{font-size:12px}.source-course-note{font-size:13px;line-height:1.65;color:var(--muted)}.source-command>span{font-size:10px;color:var(--muted)}.source-command code{font-size:13px;line-height:1.6}.source-command p{font-size:12px;line-height:1.55;color:var(--muted)}.tutorial-hub-hero p:last-child{font-size:16px;color:var(--muted)}.tutorial-hub-stat span{font-size:12px;color:var(--muted)}.tutorial-library-head span{font-size:11px}.tutorial-library-head small{font-size:12px;color:var(--muted)}.tutorial-library>button strong{font-size:14px}.tutorial-library>button small{font-size:12px;color:var(--muted)}.tutorial-badge{font-size:10px}.tutorial-runner-top p{font-size:14px;color:var(--muted)}.tutorial-runner-progress small{font-size:11px;color:var(--muted)}.tutorial-stepper button{font-size:12px;font-weight:700}.tutorial-stepper button span{font-size:10px}.tutorial-task-content>small{font-size:10px;color:var(--muted)}.tutorial-goal{font-size:15px;color:var(--muted)}.tutorial-action-box span,.tutorial-check-box span{font-size:10px}.tutorial-action-box p,.tutorial-check-box p{font-size:14px}.tutorial-evidence{font-size:12px;color:var(--muted)}.tutorial-related{font-size:12px}.palette-label{font-size:10px}.result strong{font-size:13px}.result small,.no-results{font-size:11px}.palette-help{font-size:10px}:root[data-theme=dark]{--line:#3b5873;--text:#f3f7fb;--muted:#c2d0dc;--soft:#9fb2c2}:root[data-theme=dark] .lesson-content>p,:root[data-theme=dark] .lesson-intro,:root[data-theme=dark] .info-block p,:root[data-theme=dark] .step p{color:#c7d4df}@media (max-width:760px){.side-link{font-size:14px}.hero-copy>p{font-size:15px}.continue-body p{font-size:13px}.section-kicker,.eyebrow{font-size:10px}.lesson-nav-item,.source-course-note{font-size:12px}.tutorial-hub-hero p:last-child{font-size:15px}.tutorial-library>button strong{font-size:14px}.tutorial-library>button small{font-size:12px}.tutorial-runner-top p{font-size:14px}.tutorial-stepper button{font-size:12px}.tutorial-action-box p,.tutorial-check-box p{font-size:14px}}:root{--bg:#eef3f7 !important;--surface:#ffffff !important;--surface-2:#e8eff4 !important;--line:#aebfcd !important;--text:#07192b !important;--muted:#263f55 !important;--soft:#496176 !important;--accent:#0b57d0 !important;--accent-soft:#dce8ff !important;--shadow:0 18px 48px rgba(7,25,43,.14) !important}html{font-size:18px}body{font-size:18px!important;font-weight:500;line-height:1.62;color:var(--text);background:var(--bg)}.main{background:#f3f6f9!important}.sidebar{width:270px!important;flex-basis:270px!important;background:#0c2238!important;box-shadow:10px 0 30px #07192b26!important}.brand{padding-left:12px!important;padding-right:12px!important}.brand strong{font-size:18px!important;font-weight:900}.brand small{font-size:11px!important;color:#c1d1dd!important}.side-title{font-size:11px!important;color:#a9bdcc!important;font-weight:800!important}.side-link{min-height:50px!important;padding:0 14px!important;font-size:15px!important;font-weight:700!important;color:#d5e1ea!important}.side-link svg{color:#aac0d0!important}.side-link:hover,.side-link.selected{background:#1b466a!important;color:#fff!important}.count{font-size:11px!important;color:#fff!important;background:#355c7b!important}.theme-switch{font-size:14px!important;color:#d5e1ea!important}.foot-progress>div{font-size:10px!important;color:#b7cad8!important}.topbar{height:82px!important;background:#fff!important;border-bottom:2px solid var(--line)!important;box-shadow:0 4px 18px #07192b12!important}.search-trigger{height:48px!important;font-size:15px!important;color:#324d65!important;border:2px solid #b8c7d3!important;background:#fff!important}.search-trigger kbd{font-size:11px!important;color:#324d65!important}.section-kicker,.eyebrow{font-size:12px!important;font-weight:900!important;color:#0b57d0!important;letter-spacing:.08em!important}.home-hero{max-width:1320px!important;min-height:620px!important;padding-top:64px!important}.hero-copy h1{font-size:clamp(68px,7vw,108px)!important;line-height:.9!important;font-weight:950!important}.hero-copy>p{max-width:650px!important;font-size:20px!important;line-height:1.7!important;color:#263f55!important;font-weight:550!important}.button{min-height:50px!important;padding:13px 19px!important;font-size:14px!important;font-weight:850!important}.button.quiet{border:2px solid #aebfcd!important;background:#fff!important}.button.primary{box-shadow:0 10px 25px #0b57d040!important}.learning-flow-card{padding:32px!important;border:2px solid #b9c8d4!important;box-shadow:0 20px 55px #07192b21!important}.learning-flow-card h2{font-size:34px!important;line-height:1.18!important}.learning-flow-steps{gap:12px!important}.learning-flow-steps button{min-height:82px!important;padding:16px 18px!important;border:2px solid #b9c8d4!important;background:#f4f7fa!important}.learning-flow-steps button>span{font-size:12px!important}.learning-flow-steps strong{font-size:16px!important}.learning-flow-steps small{margin-top:4px!important;font-size:13px!important;line-height:1.45!important;color:#30495f!important}.home-section{max-width:1320px!important}.continue-card{border:2px solid #b6c7d4!important;padding:26px 28px!important;box-shadow:0 18px 45px #07192b1a!important}.continue-icon{width:58px!important;height:58px!important}.continue-body h2{font-size:23px!important}.continue-body p{font-size:15px!important;line-height:1.6!important;color:#30495f!important}.ring{width:66px!important;height:66px!important}.ring b{font-size:15px!important}.standard-page,.practice-page,.tutorial-hub{max-width:1320px!important}.standard-page h1,.practice-page h1{font-size:clamp(48px,5vw,68px)!important;font-weight:950!important}.page-lead{max-width:820px!important;font-size:18px!important;line-height:1.7!important;color:#263f55!important}.simple-course-card,.simple-lesson-list,.simple-tutorial-list,.simple-runner-card,.source-course-nav,.source-course-content,.ubuntu-cheat-sheet,.tutorial-library,.tutorial-runner,.tutorial-hub-hero{border:2px solid #b6c7d4!important;box-shadow:0 14px 38px #07192b14!important}.simple-course-main{padding:24px!important}.simple-course-main h2{font-size:22px!important}.simple-course-main p{font-size:15px!important;line-height:1.65!important;color:#30495f!important}.simple-course-foot>span:first-child{font-size:11px!important}.simple-course-foot button{font-size:12px!important}.simple-course-hero p:last-child{font-size:16px!important;line-height:1.65!important;color:#30495f!important}.simple-course-stat span{font-size:11px!important;color:#30495f!important}.simple-lesson-list>button{min-height:84px!important;padding:18px 20px!important}.simple-lesson-index{width:38px!important;height:38px!important;font-size:11px!important}.simple-lesson-copy strong{font-size:16px!important}.simple-lesson-copy small{margin-top:5px!important;font-size:13px!important;color:#30495f!important}.simple-lesson-meta{font-size:11px!important;color:#30495f!important}.simple-course-next>span{font-size:14px!important;color:#30495f!important}.simple-tutorial-hero h1{font-size:clamp(48px,5vw,68px)!important}.simple-tutorial-hero>p:last-child{font-size:18px!important;line-height:1.7!important;color:#263f55!important}.tutorial-guide-note{padding:22px!important;border:2px solid #b6c7d4!important}.tutorial-guide-note>span{width:38px!important;height:38px!important;font-size:11px!important}.tutorial-guide-note strong{font-size:13px!important}.tutorial-guide-note p{font-size:12px!important;line-height:1.55!important;color:#30495f!important}.simple-tutorial-list>button{min-height:100px!important;padding:20px 22px!important}.simple-tutorial-index{width:42px!important;height:42px!important;font-size:11px!important}.simple-tutorial-copy small{font-size:10px!important;color:#496176!important}.simple-tutorial-copy strong{font-size:17px!important}.simple-tutorial-copy p{font-size:13px!important;line-height:1.55!important;color:#30495f!important}.simple-tutorial-time{font-size:11px!important;color:#30495f!important}.simple-runner-hero p:last-child{font-size:16px!important;line-height:1.65!important;color:#30495f!important}.simple-runner-hero>div:last-child span{font-size:11px!important;color:#30495f!important}.simple-runner-layout{grid-template-columns:285px minmax(0,1fr)!important;gap:20px!important}.simple-runner-steps button{min-height:64px!important;padding:12px 15px!important}.simple-runner-steps button span{width:32px!important;height:32px!important;font-size:10px!important}.simple-runner-steps button strong{font-size:13px!important;line-height:1.35!important}.simple-runner-card{padding:30px!important}.simple-runner-number{font-size:28px!important}.simple-runner-card>small{font-size:10px!important}.simple-runner-card h2{font-size:30px!important}.simple-runner-goal{font-size:16px!important;line-height:1.65!important;color:#263f55!important}.simple-runner-card section{padding:20px!important}.simple-runner-card section>span{font-size:10px!important}.simple-runner-card section p{font-size:15px!important;line-height:1.7!important}.simple-runner-card label{font-size:12px!important;color:#30495f!important}.simple-runner-footer{font-size:11px!important}.source-course-layout{grid-template-columns:290px minmax(0,1fr)!important;gap:24px!important}.source-course-content{padding:34px!important}.source-course-content>h1{font-size:clamp(46px,4.5vw,64px)!important}.source-course-content>h2{font-size:26px!important}.source-course-note{padding:17px 18px!important;font-size:15px!important;line-height:1.65!important;color:#263f55!important}.course-nav-title strong{font-size:15px!important}.course-nav-title small{font-size:12px!important;color:#30495f!important}.course-nav-progress>span:first-child{font-size:11px!important}.course-nav-count{font-size:12px!important;color:#30495f!important}.lesson-nav-item{min-height:50px!important;padding:10px 12px!important;font-size:13px!important;line-height:1.45!important}.lesson-intro{font-size:19px!important;line-height:1.7!important;color:#263f55!important}.step{padding:20px 0!important}.step-number{width:40px!important;height:40px!important;font-size:11px!important}.step h3{font-size:18px!important}.step p{font-size:16px!important;line-height:1.7!important;color:#30495f!important}.source-command{padding:17px 18px!important;border:2px solid #c0cfda!important}.source-command>span{font-size:10px!important}.source-command code{font-size:15px!important;line-height:1.65!important}.source-command p{font-size:14px!important;line-height:1.6!important;color:#30495f!important}.ubuntu-guide-hero p:last-child{font-size:16px!important;line-height:1.7!important;color:#263f55!important}.ubuntu-cheat-head span{font-size:11px!important}.ubuntu-cheat-head h2{font-size:31px!important}.ubuntu-cheat-head p{font-size:13px!important;line-height:1.55!important;color:#30495f!important}.ubuntu-cheat-grid article{padding:20px!important;border:2px solid #c0cfda!important}.ubuntu-cheat-grid h3{font-size:16px!important}.ubuntu-cheat-grid code,.ubuntu-step>code{font-size:13px!important}.ubuntu-cheat-grid pre,.ubuntu-terminal pre{font-size:13px!important;line-height:1.6!important}.tutorial-hub-hero h1{font-size:clamp(48px,5vw,72px)!important}.tutorial-hub-hero p:last-child{font-size:18px!important;line-height:1.7!important}.tutorial-hub-stat span{font-size:13px!important}.tutorial-library-head span{font-size:12px!important}.tutorial-library-head small{font-size:13px!important}.tutorial-library>button{padding:19px 20px!important}.tutorial-library>button strong{font-size:15px!important}.tutorial-library>button small{font-size:12px!important}.tutorial-runner-top p{font-size:15px!important}.tutorial-stepper button{font-size:13px!important}.tutorial-task-content h3{font-size:27px!important}.tutorial-goal{font-size:16px!important}.tutorial-action-box p,.tutorial-check-box p{font-size:15px!important}.tutorial-related{font-size:13px!important}:root[data-theme=dark]{--bg:#071522 !important;--surface:#10273a !important;--surface-2:#18344c !important;--line:#506b82 !important;--text:#f8fbfd !important;--muted:#d4e0e9 !important;--soft:#aec1cf !important;--accent:#8fb2ff !important;--accent-soft:#243f6b !important}:root[data-theme=dark] .main{background:#0a1b2a!important}:root[data-theme=dark] .topbar{background:#102438!important}:root[data-theme=dark] .search-trigger{background:#173149!important;border-color:#5a7489!important;color:#e2ebf2!important}:root[data-theme=dark] .learning-flow-steps button{background:#18344c!important;border-color:#506b82!important}:root[data-theme=dark] .lesson-intro,:root[data-theme=dark] .step p,:root[data-theme=dark] .source-course-note,:root[data-theme=dark] .source-command p,:root[data-theme=dark] .simple-course-main p,:root[data-theme=dark] .simple-lesson-copy small,:root[data-theme=dark] .simple-tutorial-copy p,:root[data-theme=dark] .simple-runner-goal{color:#d4e0e9!important}@media (max-width:1120px){.sidebar{width:245px!important;flex-basis:245px!important}.simple-runner-layout{grid-template-columns:250px minmax(0,1fr)!important}}@media (max-width:760px){html{font-size:17px}.sidebar{width:275px!important}.topbar{height:70px!important}.home-hero{padding-top:38px!important}.hero-copy h1{font-size:60px!important}.hero-copy>p{font-size:17px!important}.button{font-size:14px!important}.learning-flow-card{padding:23px!important}.learning-flow-card h2{font-size:28px!important}.learning-flow-steps strong{font-size:15px!important}.learning-flow-steps small{font-size:13px!important}.continue-card{padding:20px!important}.continue-body h2{font-size:20px!important}.continue-body p,.simple-course-main p{font-size:14px!important}.simple-lesson-copy strong{font-size:15px!important}.simple-lesson-copy small{font-size:12px!important}.simple-tutorial-copy strong{font-size:16px!important}.simple-tutorial-copy p{font-size:13px!important}.simple-runner-layout,.source-course-layout{grid-template-columns:1fr!important}.simple-runner-card,.source-course-content{padding:21px!important}.source-course-content>h1{font-size:40px!important}.lesson-intro{font-size:17px!important}.step p{font-size:15px!important}.source-command code{font-size:14px!important}}:root{color-scheme:light!important;--bg:#eef3f7 !important;--surface:#ffffff !important;--surface-2:#e8eff4 !important;--line:#aebfcd !important;--text:#07192b !important;--muted:#263f55 !important;--soft:#496176 !important;--accent:#0b57d0 !important;--accent-soft:#dce8ff !important}html,body,.main{background:#f3f6f9!important;color:var(--text)!important}.theme-icon,.theme-switch{display:none!important}.home-hero{gap:72px!important}.hero-copy{padding-right:8px}.hero-actions{gap:14px!important;margin-top:34px!important}.hero-actions .button{margin:0!important}.learning-flow-card{padding:34px!important}.learning-flow-card h2{margin:10px 0 30px!important}.learning-flow-steps{gap:14px!important}.learning-flow-steps button{gap:15px!important;padding:18px 20px!important}.continue-section{padding-top:34px!important}.continue-card{gap:26px!important;padding:28px 30px!important}.continue-body{padding:2px 8px 2px 0}.continue-body h2{margin:9px 0 8px!important}.continue-progress{gap:22px!important;flex-wrap:wrap}.section-heading{gap:22px!important}.home-section{padding-top:76px!important}.simple-course-grid{gap:20px!important;margin-top:38px!important}.simple-course-card{margin:0!important}.simple-course-main{gap:18px!important;padding:26px!important}.simple-course-main h2{margin:2px 0 10px!important}.simple-course-main p{margin-top:0!important}.simple-course-foot{gap:18px!important;padding:16px 24px!important}.simple-course-hero{gap:34px!important;margin-top:32px!important;padding-bottom:30px!important}.simple-resume{margin:28px 0 34px!important}.simple-lesson-list>button{gap:18px!important;padding:20px 22px!important}.simple-lesson-copy strong{margin-bottom:6px!important}.simple-course-next{gap:24px!important;margin-top:26px!important;padding:20px 22px!important}.simple-tutorial-hero{margin-bottom:8px}.tutorial-guide-note{gap:16px 18px!important;margin:34px 0!important;padding:24px!important}.tutorial-guide-note strong{display:block;margin-top:2px}.tutorial-guide-note p{margin-top:6px!important}.simple-tutorial-list>button{gap:18px!important;padding:22px 24px!important}.simple-tutorial-copy strong{margin-top:5px!important;margin-bottom:7px!important}.simple-tutorial-copy p{margin-top:0!important}.simple-runner-hero{gap:32px!important;margin-top:28px!important;padding-bottom:28px!important}.simple-runner-layout{gap:24px!important;margin-top:28px!important}.simple-runner-steps button{gap:12px!important;padding:13px 15px!important}.simple-runner-card{padding:32px!important}.simple-runner-card>small{margin-top:18px!important}.simple-runner-card h2{margin:8px 0 14px!important}.simple-runner-goal{margin-bottom:24px!important}.simple-runner-card section{padding:20px 22px!important}.simple-runner-card section.check{margin-top:14px!important}.simple-runner-card section p{margin-top:8px!important}.simple-runner-card label{margin:16px 0!important}.simple-runner-actions{gap:14px!important;margin-top:24px!important}.simple-runner-footer{gap:14px!important;margin-top:18px!important}.lesson-shell{padding-top:36px!important}.lesson-top{margin-bottom:34px!important}.source-course-layout{gap:28px!important}.source-course-nav .course-nav-title,.source-course-nav .course-nav-progress{padding:20px!important}.source-course-content{padding:36px!important}.source-course-content>h1{margin:10px 0 18px!important}.source-course-content>.lesson-intro{margin-bottom:22px!important}.source-course-note{margin:24px 0 32px!important}.source-course-content>h2{margin:38px 0 18px!important}.source-step-list{margin:24px 0 34px!important}.source-step-list .step{margin-bottom:14px!important;border-radius:12px;padding:20px!important}.source-step-list .step:last-child{margin-bottom:0!important}.source-command-list{gap:14px!important;margin:22px 0 32px!important}.source-command{padding:18px 20px!important}.source-command>span{margin-bottom:9px!important}.source-command p{margin-top:9px!important}.complete-button{margin-top:24px!important}.ubuntu-guide-hero{gap:30px!important;margin:28px 0 34px!important;padding-bottom:30px!important}.ubuntu-cheat-sheet{margin-bottom:42px!important;padding:30px!important}.ubuntu-cheat-head{gap:30px!important;margin-bottom:24px!important;padding-bottom:20px!important}.ubuntu-cheat-grid{gap:18px!important}.ubuntu-cheat-grid article{padding:22px!important}.ubuntu-cheat-grid h3{margin-bottom:14px!important}.ubuntu-cheat-grid code,.ubuntu-step>code{margin:8px 0!important;padding:8px 10px!important}.tutorial-hub{padding-top:64px!important}.tutorial-hub-hero{gap:48px!important;padding:40px!important}.tutorial-workspace{gap:24px!important;margin-top:30px!important}.tutorial-library-head{padding:22px!important}.tutorial-library>button{gap:14px!important;padding:20px 22px!important}.tutorial-runner-top{gap:26px!important;padding:32px 34px 28px!important}.tutorial-stepper{padding:0 34px 28px!important}.tutorial-task-card{gap:24px!important;margin:0 34px!important;padding:28px!important}.tutorial-action-box,.tutorial-check-box{padding:20px!important}.tutorial-check-box{margin-top:14px!important}.tutorial-runner-actions{gap:16px!important;padding:24px 34px!important}.tutorial-related{gap:14px!important;padding:20px 34px!important}@media (max-width:760px){.home-hero{gap:40px!important}.hero-copy{padding-right:0}.hero-actions{gap:12px!important}.learning-flow-card{padding:24px!important}.continue-card{gap:18px!important;padding:22px!important}.continue-body{padding:0}.home-section{padding-top:56px!important}.simple-course-grid{gap:16px!important}.simple-course-main{padding:22px!important}.simple-lesson-list>button,.simple-tutorial-list>button{padding:18px!important}.tutorial-guide-note{gap:14px!important;padding:20px!important}.simple-runner-card,.source-course-content{padding:24px!important}.source-course-layout{gap:20px!important}.source-step-list .step{padding:17px!important}.ubuntu-cheat-sheet{padding:22px!important}.ubuntu-cheat-grid{gap:14px!important}.tutorial-hub-hero{padding:26px!important}.tutorial-task-card{margin:0 18px!important;padding:22px!important}}.simple-course-foot a{font-size:12px;font-weight:800;color:var(--accent);text-decoration:none;white-space:nowrap}.simple-course-foot a:hover{text-decoration:underline}.course-external-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:22px}.course-external-actions span{font-size:11px!important;color:var(--muted)!important}.course-external-link{text-decoration:none}.cisco-emulator-callout{display:flex;align-items:center;justify-content:space-between;gap:20px;margin:22px 0 4px;padding:17px 18px;border:1px solid #b9d8e5;border-radius:13px;background:#edf9fc}.cisco-emulator-callout small,.cisco-emulator-callout strong,.cisco-emulator-callout span{display:block}.cisco-emulator-callout small{font:500 9px DM Mono;letter-spacing:.08em;color:var(--cyan);margin-bottom:5px}.cisco-emulator-callout strong{font-size:14px;margin-bottom:4px}.cisco-emulator-callout span{font-size:11px;line-height:1.5;color:var(--muted)}.cisco-emulator-callout a{flex:0 0 auto;text-decoration:none;background:var(--accent);color:#fff;border-radius:9px;padding:11px 14px;font-size:11px;font-weight:800}.cisco-emulator-callout a:hover{background:#303fd4}@media (max-width:760px){.cisco-emulator-callout{align-items:stretch;flex-direction:column}.cisco-emulator-callout a{text-align:center}.course-external-actions{align-items:stretch;flex-direction:column}.course-external-actions .button{justify-content:center}}@media (max-width:760px){html,body,#root,.app-shell,.main,.page-wrap{max-width:100%;overflow-x:hidden}.topbar{width:100%;min-width:0}.search-trigger{min-width:0!important;width:auto!important;max-width:none!important}.practice-page,.course-detail-page,.simple-course-detail,.simple-course-hero,.simple-course-hero>div{min-width:0;max-width:100%}.simple-course-hero h1{font-size:clamp(36px,10.5vw,43px)!important;line-height:1.04!important;overflow-wrap:anywhere}.course-external-actions{width:100%;min-width:0}.course-external-actions .button{width:100%;white-space:normal;text-align:center}.course-external-actions span{display:block;width:100%;min-width:0;overflow-wrap:anywhere;line-height:1.5}.simple-course-stat{width:100%}.simple-resume{min-width:0}.simple-resume>div{min-width:0}.simple-resume strong,.simple-resume span{overflow-wrap:anywhere}}.palette-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:100;background:#06112199;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);display:flex;justify-content:center;padding-top:14vh}.palette{width:min(650px,calc(100% - 30px));background:var(--surface);border:1px solid var(--line);border-radius:14px;box-shadow:0 28px 80px #0005;overflow:hidden}.palette-input{display:flex;align-items:center;gap:12px;padding:16px 18px;border-bottom:1px solid var(--line);color:var(--accent)}.palette-input input{flex:1;border:0;outline:0;background:transparent;color:var(--text);font-size:14px}.palette-input kbd{color:var(--muted)}.palette-label{font:500 9px DM Mono;color:var(--soft);padding:14px 18px 8px}.result{display:flex;align-items:center;gap:12px;width:100%;background:transparent;text-align:left;padding:11px 18px}.result:hover{background:var(--surface-2)}.result-icon{display:grid;place-items:center;width:30px;height:30px;border-radius:8px;background:var(--accent-soft);color:var(--accent)}.result strong,.result small{display:block}.result strong{font-size:12px}.result small{font-size:10px;color:var(--muted);margin-top:3px}.result em{margin-left:auto;color:var(--soft);font:10px DM Mono;font-style:normal}.no-results{padding:20px 18px;color:var(--muted);font-size:12px}.palette-help{display:flex;gap:18px;border-top:1px solid var(--line);padding:11px 18px;color:var(--soft);font:9px DM Mono}body>footer[data-build-stamp]{max-width:1440px;margin:0 auto;padding:24px clamp(20px,5vw,78px) 26px;color:var(--soft);font:500 10px DM Mono,ui-monospace,monospace;letter-spacing:.04em;border-top:1px solid var(--line)}@media print{body>footer[data-build-stamp]{display:none}}