:root{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--canvas:#0a0a0a;--canvas-soft:#1a1c20;--canvas-card:#191919;--canvas-mid:#363a3f;--hairline:#212327;--ink:#fff;--ink-hover:#fafaf7;--body:#dadbdf;--mute:#7d8187;--radius-sm:8px;--radius-pill:9999px;--sidebar-w:300px;--font:"Inter", system-ui, -apple-system, sans-serif;--mono:"JetBrains Mono", ui-monospace, "SF Mono", monospace}*{box-sizing:border-box}html,body,#root{min-height:100%}body{font-family:var(--font);background:var(--canvas);color:var(--ink);-webkit-font-smoothing:antialiased;margin:0;font-size:16px;font-weight:400;line-height:1.5}a{color:inherit;text-decoration:none}button,input{font:inherit}.app-shell{min-height:100vh;display:flex}.sidebar{width:var(--sidebar-w);background:var(--canvas);border-right:1px solid var(--hairline);z-index:40;flex-direction:column;flex-shrink:0;height:100vh;display:flex;position:sticky;top:0}.brand{border-bottom:1px solid var(--hairline);align-items:center;gap:12px;padding:18px 16px 16px;display:flex}.brand-mark{border:1px solid var(--hairline);border-radius:var(--radius-pill);width:36px;height:36px;color:var(--ink);flex-shrink:0;place-items:center;font-size:15px;display:grid}.brand-title{font-weight:400;font-family:var(--mono);text-transform:uppercase;letter-spacing:1.4px;color:var(--ink);font-size:12px}.brand-sub{color:var(--mute);font-size:10px;font-family:var(--mono);letter-spacing:1.2px}.sidebar-close{width:34px;height:34px;color:var(--mute);cursor:pointer;border-radius:var(--radius-pill);background:0 0;border:1px solid #ffffff40;place-items:center;margin-left:auto;display:none}.progress-card{border:1px solid 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var(--hairline);color:var(--ink);cursor:pointer;border-radius:var(--radius-pill);background:0 0;place-items:center;width:38px;height:38px;display:none}.topbar-title{font-size:13px;font-family:var(--mono);text-transform:uppercase;letter-spacing:1.4px;color:var(--mute)}.topbar-stats{color:var(--mute);font-size:12px;font-family:var(--mono);gap:12px;margin-left:auto;display:flex}.topbar-auth button,.topbar-auth a{font-family:var(--mono);text-transform:uppercase;letter-spacing:1.2px;border-radius:var(--radius-pill);cursor:pointer;color:var(--ink);background:0 0;border:1px solid #ffffff40;padding:8px 14px;font-size:11px;transition:all .15s}.topbar-auth button:hover,.topbar-auth a:hover{background:#ffffff0d}.topbar-auth{align-items:center;gap:8px;margin-left:16px;display:flex}.topbar-auth button{font-family:var(--mono);text-transform:uppercase;letter-spacing:1.2px;border-radius:var(--radius-pill);color:var(--ink);cursor:pointer;background:0 0;border:1px solid #ffffff40;padding:6px 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(width<=960px){.features{grid-template-columns:repeat(2,minmax(0,1fr))}.hero-stats{grid-template-columns:repeat(3,minmax(0,1fr))}.modules-grid,.terms-grid{grid-template-columns:1fr}}@media (width<=800px){.sidebar{transition:transform .2s;position:fixed;top:0;left:0;transform:translate(-105%)}.sidebar.open{transform:translate(0)}.sidebar-close,.menu-btn{display:grid}.sidebar-backdrop{z-index:30;background:#00000080;display:block;position:fixed;inset:0}.topbar-stats{display:none}.content{padding:18px 16px 48px}.features{grid-template-columns:1fr}.hero-stats{grid-template-columns:repeat(2,minmax(0,1fr))}.tabs{top:58px}}.page-header{padding:10px 0 18px}.page-header h1{letter-spacing:-.02em;margin:0 0 8px}.page-header 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p{color:var(--body);margin:6px 0 0}.lab-section{margin-bottom:14px}.lab-section h4{font-size:13px;font-family:var(--mono);text-transform:uppercase;letter-spacing:1.2px;align-items:center;gap:6px;margin:0 0 8px;display:flex}.lab-section ul,.lab-section ol{color:var(--body);margin:0;padding-left:1.15rem}.lab-section li{margin-bottom:4px}.lab-tasks li{margin-bottom:6px}.lab-services{background:var(--hairline);border-radius:var(--radius-sm);flex-direction:column;gap:1px;display:flex;overflow:hidden}.lab-service-item{background:var(--canvas);align-items:flex-start;gap:10px;padding:10px;display:flex}.lab-service-item>div{flex-direction:column;gap:2px;display:flex}.lab-service-item strong{font-size:13px}.lab-toggles{flex-wrap:wrap;gap:8px;margin:12px 0 0;display:flex}.lab-card .callout{margin-top:14px;margin-bottom:0}.exam-meta-row{flex-wrap:wrap;gap:10px;margin-top:10px;display:flex}.exam-history{margin-top:12px}.exam-history strong{margin-bottom:6px;font-size:13px;display:block}.exam-history-list{flex-wrap:wrap;gap:6px;display:flex}.exam-start-card{text-align:center;border:1px solid var(--hairline);border-radius:var(--radius-sm);padding:24px}.exam-start-card h3{margin:0 0 10px}.exam-start-card p{color:var(--body);max-width:50ch;margin:0 auto 20px}.exam-timer-bar{z-index:10;background:var(--canvas);border:1px solid var(--hairline);border-radius:var(--radius-sm);margin-bottom:18px;padding:12px 16px;position:sticky;top:62px}.exam-timer-info{align-items:center;gap:10px;margin-bottom:8px;font-size:14px;display:flex}.timer-warn{color:var(--ink)!important}.exam-progress-text{color:var(--mute);font-size:12px;font-family:var(--mono);letter-spacing:1.2px;margin-left:auto}.exam-questions-list{background:var(--hairline);border-radius:var(--radius-sm);flex-direction:column;gap:1px;display:flex;overflow:hidden}.exam-question-card{background:var(--canvas);padding:24px}.exam-q-header{flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:10px;display:flex}.exam-q-num{color:var(--mute);font-size:12px;font-family:var(--mono);text-transform:uppercase;letter-spacing:1.2px}.exam-q-text{margin:0 0 12px}.exam-actions{border-top:1px solid var(--hairline);flex-direction:column;align-items:center;gap:10px;margin-top:20px;padding:20px;display:flex}.exam-results{margin-top:24px}.exam-score-card{text-align:center;border:1px solid var(--hairline);border-radius:var(--radius-sm);padding:24px}.exam-score-card.pass{border-color:var(--ink)}.exam-score-card.fail{opacity:.6}.exam-score-card h2{font-family:var(--mono);text-transform:uppercase;letter-spacing:1.4px;margin:0 0 12px}.exam-score-big{font-size:3rem;font-family:var(--mono);justify-content:center;align-items:baseline;gap:12px;display:flex}.exam-score-pct{color:var(--mute);font-size:1.2rem}.exam-score-card p{color:var(--body);margin:8px 0 16px}.obj-chips{flex-wrap:wrap;gap:4px;display:flex}.chip{color:var(--mute);border:1px solid var(--hairline);font-size:10px;font-family:var(--mono);text-transform:uppercase;letter-spacing:.5px;border-radius:var(--radius-pill);background:0 0;padding:2px 10px}.learning-objectives{border:1px solid var(--hairline);border-radius:var(--radius-sm);background:#ffffff05;margin:10px 0 16px;padding:16px}.lo-label{text-transform:uppercase;letter-spacing:1.2px;color:var(--mute);font-size:11px;font-family:var(--mono);margin-bottom:8px}.learning-objectives ul{color:var(--body);margin:0;padding-left:1.2rem}.learning-objectives li{margin-bottom:4px}.lab-link-card{border:1px solid var(--hairline);border-radius:var(--radius-sm);background:#ffffff05;align-items:center;gap:10px;margin-bottom:14px;padding:12px;transition:all .15s;display:flex}.lab-link-card:hover{background:#ffffff0a}.lab-link-card div{flex-direction:column;gap:2px;display:flex}.lab-link-card strong{font-size:13px}.lab-link-card span{color:var(--mute);font-size:12px}.mono{font-family:var(--mono)}.label{letter-spacing:1.2px;color:var(--mute);text-transform:uppercase;font-size:11px}@media (width<=800px){.exam-score-big{font-size:2.2rem}}.auth-wall{justify-content:center;align-items:center;min-height:100vh;padding:24px;display:flex}.auth-wall-card{border:1px solid var(--hairline);background:var(--canvas-card);border-radius:var(--radius-sm);text-align:center;width:100%;max-width:380px;padding:40px 32px}.auth-wall-actions{gap:10px;display:flex}