:root{--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "SF Pro Text", system-ui, sans-serif;--font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;--radius-sm: 8px;--radius: 12px;--radius-lg: 16px;--radius-xl: 22px;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 24px;--space-6: 32px;--ease: cubic-bezier(.4, 0, .2, 1);--ease-out: cubic-bezier(.2, .8, .2, 1);--content-w: 1180px}:root[data-theme=dark]{--bg: #0a0d14;--bg-2: #0f131c;--panel: #131826;--panel2: #1a2031;--panel3: #232a3d;--text: #f0f3fa;--text-2: #c8cfde;--muted: #8993a8;--border: #232a3d;--border-2: #2d364d;--brand: #818cf8;--brand-2: #a78bfa;--brand-3: #f0abfc;--accent: #34d399;--on-brand: #0a0d14;--ok: #34d399;--bad: #f87171;--warn: #fbbf24;--info: #60a5fa;--term-bg: #060912;--term-text: #d6dcec;--term-ros: #7ee787;--term-cisco: #79c0ff;--term-ps: #d2a8ff;--term-bash: #a5d6ff;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);--shadow: 0 12px 32px rgba(2, 4, 12, .55), 0 2px 6px rgba(2, 4, 12, .35);--shadow-lg: 0 24px 60px rgba(2, 4, 12, .6), 0 4px 12px rgba(2, 4, 12, .4);--shadow-glow: 0 0 0 1px color-mix(in oklab, var(--brand) 30%, transparent), 0 8px 32px color-mix(in oklab, var(--brand) 22%, transparent);--hero-grad: radial-gradient(circle at 20% 0%, color-mix(in oklab, var(--brand) 28%, transparent), transparent 50%), radial-gradient( circle at 80% 100%, color-mix(in oklab, var(--brand-2) 22%, transparent), transparent 55% ), linear-gradient( 135deg, color-mix(in oklab, var(--panel2) 92%, transparent), color-mix(in oklab, var(--panel) 92%, transparent) );--noise: 0 0 0 transparent}:root[data-theme=light]{--bg: #f5f7fc;--bg-2: #eef1f7;--panel: #ffffff;--panel2: #f4f6fb;--panel3: #e7ebf3;--text: #0d1424;--text-2: #2c3447;--muted: #5e6b86;--border: #e2e7f1;--border-2: #d2d9e6;--brand: #6366f1;--brand-2: #8b5cf6;--brand-3: #d946ef;--accent: #10b981;--on-brand: #ffffff;--ok: #10b981;--bad: #ef4444;--warn: #f59e0b;--info: #3b82f6;--term-bg: #0b1220;--term-text: #dde4ef;--term-ros: #4ade80;--term-cisco: #3b82f6;--term-ps: #a78bfa;--term-bash: #60a5fa;--shadow-sm: 0 1px 2px rgba(15, 23, 42, .04);--shadow: 0 8px 24px rgba(15, 23, 42, .08), 0 2px 6px rgba(15, 23, 42, .04);--shadow-lg: 0 18px 48px rgba(15, 23, 42, .12), 0 4px 12px rgba(15, 23, 42, .06);--shadow-glow: 0 0 0 1px color-mix(in oklab, var(--brand) 25%, transparent), 0 8px 32px color-mix(in oklab, var(--brand) 18%, transparent);--hero-grad: radial-gradient(circle at 20% 0%, color-mix(in oklab, var(--brand) 14%, transparent), transparent 50%), radial-gradient( circle at 80% 100%, color-mix(in oklab, var(--brand-2) 12%, transparent), transparent 55% ), linear-gradient(135deg, var(--panel), var(--panel2))}*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:var(--font-sans);font-size:15.5px;line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility;font-feature-settings:"kern","liga","calt"}body{min-height:100vh;display:flex;flex-direction:column}body:before{content:"";position:fixed;inset:0;pointer-events:none;z-index:0;background-image:radial-gradient(1200px 600px at 0% 0%,color-mix(in oklab,var(--brand) 7%,transparent),transparent),radial-gradient(1000px 500px at 100% 100%,color-mix(in oklab,var(--brand-2) 6%,transparent),transparent);opacity:.85}.topbar,main,footer,.bottom-nav{position:relative;z-index:1}a{color:var(--brand-2);text-decoration:none}a:hover{text-decoration:underline;text-underline-offset:3px}code,kbd,pre{font-family:var(--font-mono)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.topbar{display:flex;align-items:center;gap:var(--space-4);padding:12px 20px;border-bottom:1px solid var(--border);background:color-mix(in oklab,var(--panel) 78%,transparent);backdrop-filter:saturate(160%) blur(14px);-webkit-backdrop-filter:saturate(160%) blur(14px);position:sticky;top:0;z-index:50;flex-wrap:wrap}.brand{font-weight:700;font-size:17px;display:flex;align-items:center;gap:10px;cursor:pointer;padding:4px 8px;border-radius:var(--radius-sm);transition:background .15s var(--ease)}.brand:hover{background:var(--panel2)}.brand .logo{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:10px;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:var(--on-brand);box-shadow:0 4px 16px color-mix(in oklab,var(--brand) 35%,transparent),inset 0 1px #fff3}.brand-name{background:linear-gradient(135deg,var(--text),var(--text-2));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;letter-spacing:-.01em}.tabs{display:flex;gap:2px;flex:0 0 auto}.tab{background:transparent;color:var(--muted);border:1px solid transparent;border-radius:10px;padding:8px 14px;cursor:pointer;font:inherit;font-weight:500;font-size:14px;transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);position:relative}.tab:hover{color:var(--text);background:color-mix(in oklab,var(--panel2) 70%,transparent)}.tab.active{color:var(--text);background:var(--panel2);border-color:var(--border)}.tab.active:after{content:"";position:absolute;left:16px;right:16px;bottom:-13px;height:2px;background:linear-gradient(90deg,var(--brand),var(--brand-2));border-radius:2px}.controls{margin-left:auto;display:flex;gap:8px;flex-wrap:wrap;align-items:center}select,button,input[type=text],input[type=number],input[type=email],input[type=password],input[type=search],textarea{background:var(--panel2);color:var(--text);border:1px solid var(--border);border-radius:var(--radius-sm);padding:9px 12px;font:inherit;transition:border-color .15s var(--ease),box-shadow .15s var(--ease),background .15s var(--ease),transform .12s var(--ease-out)}select{max-width:280px;min-height:40px;cursor:pointer;padding:10px 36px 10px 14px;font-weight:500;letter-spacing:-.005em;background:linear-gradient(180deg,color-mix(in oklab,var(--panel2) 85%,transparent),var(--panel2))}input::placeholder,textarea::placeholder{color:var(--muted);opacity:.8}input:hover,select:hover,textarea:hover{border-color:color-mix(in oklab,var(--brand) 30%,var(--border-2));background:color-mix(in oklab,var(--brand) 4%,var(--panel2))}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px color-mix(in oklab,var(--brand) 22%,transparent),0 4px 14px color-mix(in oklab,var(--brand) 12%,transparent)}:where(button,a,[role=button],[role=radio],[role=tab],[role=menuitem],[tabindex]):focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:var(--radius-sm)}select:active{transform:translateY(.5px)}select option{background:var(--panel);color:var(--text);padding:8px 12px}select option:checked,select option[selected]{background:color-mix(in oklab,var(--brand) 24%,var(--panel));color:var(--text);font-weight:600}select option:hover{background:color-mix(in oklab,var(--brand) 14%,var(--panel))}select:disabled{opacity:.55;cursor:not-allowed}input:invalid:not(:placeholder-shown){border-color:color-mix(in oklab,var(--bad) 60%,var(--border))}input[type=search]{background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238993a8' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'><circle cx='11' cy='11' r='7'/><line x1='21' y1='21' x2='16.5' y2='16.5'/></svg>");background-repeat:no-repeat;background-position:10px center;background-size:14px;padding-left:32px}input[type=search]::-webkit-search-cancel-button{-webkit-appearance:none;appearance:none}input[type=number]{-moz-appearance:textfield}input[type=number]::-webkit-inner-spin-button,input[type=number]::-webkit-outer-spin-button{-webkit-appearance:inner-spin-button;appearance:inner-spin-button;opacity:.6}input[type=number]:hover::-webkit-inner-spin-button{opacity:1}select{appearance:none;-webkit-appearance:none;background-image:linear-gradient(180deg,color-mix(in oklab,var(--panel2) 85%,transparent),var(--panel2)),url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238993a8' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'/></svg>");background-repeat:no-repeat,no-repeat;background-position:0 0,right 12px center;background-size:100% 100%,14px}select:hover,select:focus{background-image:linear-gradient(180deg,color-mix(in oklab,var(--brand) 6%,var(--panel2)),color-mix(in oklab,var(--brand) 4%,var(--panel2))),url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23818cf8' stroke-width='2.6' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'/></svg>")}:root[data-theme=light] select:hover,:root[data-theme=light] select:focus{background-image:linear-gradient(180deg,color-mix(in oklab,var(--brand) 6%,var(--panel2)),color-mix(in oklab,var(--brand) 4%,var(--panel2))),url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236366f1' stroke-width='2.6' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'/></svg>")}.cert-menu-trigger{display:inline-flex;align-items:center;gap:8px;min-height:38px;padding:6px 10px 6px 8px;border:1px solid color-mix(in oklab,var(--brand) 30%,var(--border-2));border-radius:10px;background:linear-gradient(135deg,color-mix(in oklab,var(--brand) 14%,var(--panel2)),color-mix(in oklab,var(--brand-2) 8%,var(--panel2)));color:var(--text);font-weight:600;cursor:pointer;transition:border-color .15s ease,box-shadow .15s ease,transform .15s ease;-webkit-tap-highlight-color:transparent}.cert-menu-trigger:hover{border-color:var(--brand)}.cert-menu-trigger:focus-visible{outline:2px solid var(--brand);outline-offset:2px}.cert-menu-trigger[aria-expanded=true]{box-shadow:0 0 0 3px color-mix(in oklab,var(--brand) 28%,transparent)}.cert-menu-trigger-icon{width:28px;height:28px;display:inline-flex;align-items:center;justify-content:center;border-radius:8px;background:color-mix(in oklab,var(--cert-color) 18%,var(--panel));color:var(--cert-color);border:1px solid color-mix(in oklab,var(--cert-color) 30%,var(--border))}.cert-menu-trigger-label{font-size:14px}.cert-menu-trigger-chev{opacity:.8;transition:transform .2s var(--ease-out)}.cert-menu-trigger[aria-expanded=true] .cert-menu-trigger-chev{transform:rotate(180deg)}.cert-menu-pop{position:fixed;z-index:1000;background:var(--panel);border:1px solid var(--border-2);border-radius:14px;box-shadow:var(--shadow-lg);padding:10px;overflow:auto;-webkit-overflow-scrolling:touch;animation:certMenuIn .15s var(--ease-out) both}@keyframes certMenuIn{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.cert-menu-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:6px}.cert-menu-item{display:flex;align-items:center;gap:10px;padding:8px 10px;border:1px solid transparent;border-radius:10px;background:transparent;text-align:left;cursor:pointer;transition:background .12s ease,border-color .12s ease;-webkit-tap-highlight-color:transparent}.cert-menu-item:hover{background:color-mix(in oklab,var(--cert-color) 8%,var(--panel2));border-color:color-mix(in oklab,var(--cert-color) 25%,var(--border))}.cert-menu-item.selected{background:color-mix(in oklab,var(--cert-color) 16%,var(--panel2));border-color:color-mix(in oklab,var(--cert-color) 50%,var(--border))}.cert-menu-item:focus-visible{outline:2px solid var(--cert-color, var(--brand));outline-offset:1px}.cert-menu-item-icon{width:32px;height:32px;display:inline-flex;align-items:center;justify-content:center;border-radius:8px;background:color-mix(in oklab,var(--cert-color) 18%,var(--panel));color:var(--cert-color);border:1px solid color-mix(in oklab,var(--cert-color) 30%,var(--border));flex-shrink:0}.cert-menu-item-body{display:flex;flex-direction:column;min-width:0;flex:1}.cert-menu-item-name{font-weight:600;font-size:13.5px;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.cert-menu-item-provider{font-size:11.5px;color:var(--muted)}.lang-toggle{display:inline-flex;gap:0;border:1px solid var(--border-2);border-radius:10px;padding:2px;background:var(--panel2)}.lang-toggle .lang-chip{border:none;background:transparent;color:var(--muted);padding:4px 10px;min-height:32px;border-radius:8px;font-weight:600;font-size:12px;letter-spacing:.05em;cursor:pointer;transition:background .12s ease,color .12s ease;-webkit-tap-highlight-color:transparent}.lang-toggle .lang-chip:hover{color:var(--text)}.lang-toggle .lang-chip.selected,.lang-toggle .lang-chip[aria-checked=true]{background:var(--panel);color:var(--text);box-shadow:var(--shadow-sm)}.lang-toggle .lang-chip:focus-visible{outline:2px solid var(--brand);outline-offset:1px}@media (max-width: 720px){.cert-menu-trigger-label{display:none}.cert-menu-trigger{padding:6px}}.config-row select,.goal-form select{width:100%;max-width:none}.config-row>label{font-weight:600!important;font-size:12px;letter-spacing:.04em;text-transform:uppercase;color:var(--muted)}.quiz-config{gap:16px}input[type=text],input[type=email],input[type=password],input[type=search]{min-height:38px}button{cursor:pointer;font-weight:500;transition:transform .08s var(--ease),background .15s var(--ease),border-color .15s var(--ease),box-shadow .15s var(--ease)}button:hover{border-color:var(--border-2)}button:active{transform:translateY(1px) scale(.99)}button.icon{width:38px;height:38px;padding:0;text-align:center;display:inline-flex;align-items:center;justify-content:center}.primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:var(--on-brand);border-color:transparent;font-weight:600;box-shadow:0 4px 14px color-mix(in oklab,var(--brand) 30%,transparent),inset 0 1px #ffffff2e}.primary:hover{filter:brightness(1.06);box-shadow:0 6px 20px color-mix(in oklab,var(--brand) 40%,transparent),inset 0 1px #ffffff2e}.ghost{background:transparent}.ghost:hover{background:var(--panel2)}.danger{color:var(--bad)}.danger:hover{border-color:color-mix(in oklab,var(--bad) 40%,var(--border))}.chk{display:inline-flex;gap:8px;align-items:center;color:var(--muted);cursor:pointer;user-select:none}.chk input[type=checkbox]{width:16px;height:16px;accent-color:var(--brand);cursor:pointer}main{max-width:var(--content-w);width:100%;margin:28px auto;padding:0 20px;flex:1}.card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px;margin-bottom:20px;box-shadow:var(--shadow);transition:box-shadow .2s var(--ease),border-color .2s var(--ease)}.hero{background:var(--hero-grad);border-radius:var(--radius-xl);padding:40px;position:relative;overflow:hidden}.hero:after{content:"";position:absolute;right:-120px;top:-120px;width:360px;height:360px;background:radial-gradient(circle,color-mix(in oklab,var(--brand-2) 30%,transparent),transparent 70%);filter:blur(40px);pointer-events:none}.hero-head{position:relative;z-index:1}.hero h1{font-size:clamp(28px,4.2vw,44px);margin:14px 0 12px;font-weight:800;letter-spacing:-.02em;line-height:1.1;background:linear-gradient(135deg,var(--text),color-mix(in oklab,var(--text) 60%,var(--brand)));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.hero p{font-size:16px;max-width:64ch;color:var(--text-2)}.hero-badge{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:999px;background:color-mix(in oklab,var(--brand) 14%,transparent);color:var(--brand);font-size:12px;font-weight:600;border:1px solid color-mix(in oklab,var(--brand) 30%,var(--border));letter-spacing:.02em;text-transform:uppercase}.hero-badge:before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 color-mix(in oklab,var(--brand) 60%,transparent);animation:pulseRing 2s ease-out infinite}.hero-cta{margin-top:22px;gap:12px;position:relative;z-index:1}.hero-cta button{padding:12px 22px;font-size:14.5px}h1{margin:0 0 8px;font-size:24px;letter-spacing:-.015em;font-weight:700}h2{font-size:21px;line-height:1.4;margin:10px 0 18px;font-weight:700;letter-spacing:-.01em}#qtext{font-size:22px;line-height:1.45;margin:14px 0 6px;font-weight:600;letter-spacing:-.005em;color:var(--text)}h3{font-size:16px;line-height:1.4;margin:10px 0;font-weight:600}.muted{color:var(--muted)}.small{font-size:12.5px}.pill{display:inline-block;padding:3px 10px;border-radius:999px;background:var(--panel2);color:var(--muted);font-size:11.5px;margin-left:6px;border:1px solid var(--border);font-weight:500}.hidden{display:none!important}.cert-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:14px}.cert-card{background:var(--panel2);border:1px solid var(--border);border-radius:var(--radius);padding:18px;cursor:pointer;transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);position:relative;overflow:hidden;display:flex;flex-direction:column;gap:10px}.cert-card:before{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--cert-color, var(--brand));opacity:0;transition:opacity .2s var(--ease)}.cert-card:hover{border-color:color-mix(in oklab,var(--cert-color, var(--brand)) 50%,var(--border));transform:translateY(-2px);box-shadow:var(--shadow)}.cert-card:hover:before{opacity:1}.cert-card.active{border-color:var(--cert-color, var(--brand));background:color-mix(in oklab,var(--cert-color, var(--brand)) 6%,var(--panel2))}.cert-card.active:before{opacity:1}.cert-head{display:flex;justify-content:space-between;align-items:flex-start;gap:8px}.cert-head-main{display:flex;align-items:center;gap:12px;min-width:0}.cert-icon{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:10px;background:color-mix(in oklab,var(--cert-color) 14%,var(--panel));color:var(--cert-color);flex-shrink:0;border:1px solid color-mix(in oklab,var(--cert-color) 20%,var(--border));transition:transform .2s var(--ease),background .2s var(--ease)}.cert-card:hover .cert-icon{background:color-mix(in oklab,var(--cert-color) 22%,var(--panel));transform:scale(1.05)}.cert-name{font-weight:700;font-size:15.5px;letter-spacing:-.005em}.cert-provider{color:var(--muted);font-size:11px;text-transform:uppercase;letter-spacing:.04em;font-weight:500;margin-top:2px}.cert-desc{color:var(--text-2);font-size:13px;margin:0;line-height:1.55;flex:1}.tips li{margin:6px 0}.quiz-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px;color:var(--muted);flex-wrap:wrap;gap:10px}.quiz-head>div{display:flex;gap:8px;flex-wrap:wrap;align-items:center}.quiz-foot{display:flex;justify-content:space-between;align-items:center;margin-top:18px;gap:12px;flex-wrap:wrap}progress{appearance:none;-webkit-appearance:none;width:100%;height:6px;border:none;background:var(--panel2);border-radius:999px;overflow:hidden}progress::-webkit-progress-bar{background:var(--panel2);border-radius:999px}progress::-webkit-progress-value{background:linear-gradient(90deg,var(--brand),var(--brand-2));border-radius:999px;transition:width .3s var(--ease)}progress::-moz-progress-bar{background:linear-gradient(90deg,var(--brand),var(--brand-2))}.choices{list-style:none;padding:0;margin:22px 0 0;display:grid;gap:10px}.choices li{background:var(--panel2);border:1px solid var(--border);border-radius:var(--radius);padding:14px 18px;cursor:pointer;display:flex;gap:14px;align-items:flex-start;transition:border-color .15s var(--ease),background .15s var(--ease),transform .12s var(--ease);min-height:54px;font-size:15.5px;line-height:1.55;color:var(--text)}.choice-text{flex:1}.choices li:hover,.choices li:focus-visible{border-color:color-mix(in oklab,var(--brand) 45%,var(--border));background:color-mix(in oklab,var(--brand) 4%,var(--panel2))}.choices li:focus-visible{outline:2px solid var(--brand);outline-offset:2px}.choices li:not(.disabled):active{transform:scale(.99)}.choices li .k{min-width:32px;height:32px;border-radius:9px;background:var(--bg);display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:13px;color:var(--muted);border:1px solid var(--border);flex-shrink:0;font-family:var(--font-mono);transition:background .15s var(--ease),color .15s var(--ease),border-color .15s var(--ease)}.choices li:hover .k{background:color-mix(in oklab,var(--brand) 14%,var(--bg));color:var(--brand);border-color:color-mix(in oklab,var(--brand) 35%,var(--border))}.choices li.selected{border-color:var(--brand);background:color-mix(in oklab,var(--brand) 8%,var(--panel2))}.choices li.selected .k{background:var(--brand);color:var(--on-brand);border-color:transparent}.choices li.correct{border-color:var(--ok);background:color-mix(in oklab,var(--ok) 12%,var(--panel2))}.choices li.correct .k{background:var(--ok);color:#06291a;border-color:transparent}.choices li.wrong{border-color:var(--bad);background:color-mix(in oklab,var(--bad) 12%,var(--panel2))}.choices li.wrong .k{background:var(--bad);color:#2a0d0d;border-color:transparent}.choices li.disabled{cursor:default}.feedback{margin-top:18px;padding:16px 18px;border-radius:var(--radius);border:1px solid var(--border);background:var(--panel2);animation:fadeIn .25s var(--ease);font-size:15px;line-height:1.65;color:var(--text)}.feedback.ok{border-color:var(--ok);background:color-mix(in oklab,var(--ok) 10%,var(--panel2))}.feedback.bad{border-color:var(--bad);background:color-mix(in oklab,var(--bad) 10%,var(--panel2))}.feedback.partial{border-color:var(--warn);background:color-mix(in oklab,var(--warn) 10%,var(--panel2))}.feedback b{color:var(--text);font-weight:700}.feedback code{background:color-mix(in oklab,var(--brand) 12%,var(--panel));padding:2px 6px;border-radius:5px;font-size:.9em;color:var(--brand-2)}.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px;margin-top:16px}.stat{background:var(--panel2);border:1px solid var(--border);border-radius:var(--radius);padding:14px 16px;transition:border-color .15s var(--ease),transform .15s var(--ease)}.stat:hover{border-color:var(--border-2);transform:translateY(-1px)}.stat .n{font-size:26px;font-weight:700;letter-spacing:-.02em;font-variant-numeric:tabular-nums;background:linear-gradient(135deg,var(--text),var(--brand));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.stat .t{color:var(--muted);font-size:12px;margin-top:2px;text-transform:uppercase;letter-spacing:.04em;font-weight:500}.row{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px;align-items:center}.lab-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:14px}.lab-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:14px}.lab-card{background:var(--panel2);border:1px solid var(--border);border-radius:var(--radius);padding:18px;cursor:pointer;transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);position:relative;overflow:hidden}.lab-card:hover{border-color:color-mix(in oklab,var(--brand) 50%,var(--border));transform:translateY(-2px);box-shadow:var(--shadow),inset 0 1px color-mix(in oklab,var(--brand) 40%,transparent)}.lab-card h3{margin:0 0 8px;font-size:15.5px;font-weight:700}.lab-card p{margin:0;color:var(--text-2);font-size:13px;line-height:1.55}.lab-main{display:grid;grid-template-columns:320px 1fr;gap:16px}.lab-steps{background:var(--panel2);border:1px solid var(--border);border-radius:var(--radius);padding:16px}.lab-steps ol{padding-left:24px;margin:10px 0}.lab-steps li{margin:8px 0;color:var(--muted);line-height:1.45}.lab-steps li.current{color:var(--text);font-weight:500}.lab-steps li.done{color:var(--ok);text-decoration:line-through;opacity:.7}.terminal{background:var(--term-bg);border:1px solid var(--border-2);border-radius:var(--radius);padding:14px;font-family:var(--font-mono);font-size:13px;line-height:1.6;color:var(--term-text);min-height:380px;max-height:60vh;max-height:60dvh;overflow:auto;box-shadow:inset 0 1px #ffffff0a,var(--shadow-sm)}.terminal .prompt{color:var(--term-ros)}.terminal .prompt-cisco{color:var(--term-cisco)}.terminal .prompt-ps{color:var(--term-ps)}.terminal .prompt-bash{color:var(--term-bash)}.terminal .cmd{color:#fff}.terminal .ok{color:var(--ok)}.terminal .bad{color:var(--bad)}.terminal .dim{color:var(--muted)}.terminal .warn{color:var(--warn)}.term-input-row{display:flex;align-items:center;gap:6px;margin-top:6px}.term-input-row .p{white-space:pre;color:var(--term-ros)}.term-input-row .p.prompt-cisco{color:var(--term-cisco)}.term-input-row .p.prompt-ps{color:var(--term-ps)}.term-input-row .p.prompt-bash{color:var(--term-bash)}.term-input-row input{flex:1;background:transparent;border:none;color:var(--text);font:inherit;outline:none;padding:2px 0}:root{--topbar-h: 60px}.lessons{display:grid;grid-template-columns:280px 1fr;gap:0;padding:0;min-height:600px;border-radius:var(--radius-lg);align-items:start;overflow:visible}.lesson-side{background:var(--panel2);border-right:1px solid var(--border);padding:0;position:sticky;top:var(--topbar-h);max-height:calc(100vh - var(--topbar-h));max-height:calc(100dvh - var(--topbar-h));overflow:auto;scrollbar-width:thin;border-top-left-radius:var(--radius-lg);border-bottom-left-radius:var(--radius-lg)}.lesson-side::-webkit-scrollbar{width:8px}.lesson-side::-webkit-scrollbar-thumb{background:color-mix(in oklab,var(--brand) 30%,var(--border-2));border-radius:4px}.lesson-side::-webkit-scrollbar-thumb:hover{background:var(--brand)}.lesson-side>.lesson-group{padding:0 14px}.lesson-side>.lesson-group:first-of-type{padding-top:16px}.lesson-side>.lesson-group:last-of-type{padding-bottom:16px}.lesson-group{margin-bottom:16px}.lesson-group>summary{list-style:none;cursor:pointer}.lesson-group>summary::-webkit-details-marker{display:none}.lesson-group-head{margin-bottom:8px;display:grid;grid-template-columns:1fr auto;gap:8px;align-items:center;position:relative;padding-right:16px}.lesson-group-head:after{content:"";position:absolute;right:0;top:50%;width:8px;height:8px;border-right:1.5px solid var(--muted);border-bottom:1.5px solid var(--muted);transform:translateY(-65%) rotate(45deg);transition:transform .15s var(--ease-out)}.lesson-group[open] .lesson-group-head:after{transform:translateY(-35%) rotate(-135deg)}.lesson-group-title{font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}.topic-progress{display:flex;align-items:center;gap:8px;margin-top:4px}.topic-progress .topic-bar{flex:1;height:3px;border-radius:999px;background:var(--bg);overflow:hidden;border:1px solid var(--border)}.topic-progress .topic-bar>span{display:block;height:100%;background:linear-gradient(90deg,var(--brand),var(--brand-2));transition:width .3s ease}.topic-progress .topic-pct{font-variant-numeric:tabular-nums;font-size:11px;color:var(--muted);min-width:30px;text-align:right}.lesson-group ul{list-style:none;padding:0;margin:0;display:grid;gap:2px}.lesson-link{display:flex;align-items:center;gap:10px;width:100%;text-align:left;background:transparent;border:1px solid transparent;border-radius:9px;padding:9px 11px 9px 14px;color:var(--text);font:inherit;cursor:pointer;font-size:13px;line-height:1.4;position:relative;transition:background .15s var(--ease),border-color .15s var(--ease),color .15s var(--ease),padding-left .15s var(--ease)}.lesson-link:hover{background:color-mix(in oklab,var(--brand) 6%,var(--panel));padding-left:12px}.lesson-link.active{background:color-mix(in oklab,var(--brand) 12%,var(--panel));border-color:color-mix(in oklab,var(--brand) 35%,var(--border));color:var(--text);font-weight:600;padding-left:12px;box-shadow:inset -3px 0 0 0 var(--brand)}.lesson-link-title{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis}.lesson-body{padding:32px 40px 56px}.lesson-article{max-width:760px;margin:0 auto;font-size:16px;line-height:1.7;color:var(--text)}.lesson-article h1.lesson-title{font-size:28px;margin:6px 0 12px;font-weight:700;letter-spacing:-.02em;line-height:1.25;color:var(--text)}.lesson-meta{display:flex;align-items:center;gap:8px;color:var(--muted);font-size:13px;margin:0 0 16px}.lesson-topic{color:var(--brand);font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;font-weight:700;display:inline-block;margin-bottom:4px}.lesson-article h2{font-size:24px;margin:36px 0 12px;font-weight:700;letter-spacing:-.012em;color:var(--text);line-height:1.3}.lesson-article h3{font-size:19px;margin:26px 0 8px;font-weight:600;color:var(--text);line-height:1.35}.lesson-article h4{font-size:16px;margin:20px 0 6px;font-weight:700;color:var(--text-2);text-transform:uppercase;letter-spacing:.04em}.lesson-article p{margin:14px 0;line-height:1.75;color:var(--text);font-size:16px}.lesson-article strong{color:var(--text);font-weight:700}.lesson-article em{color:var(--text-2)}.lesson-article code{background:color-mix(in oklab,var(--brand) 10%,var(--panel2));padding:2px 7px;border-radius:6px;border:1px solid color-mix(in oklab,var(--brand) 22%,var(--border));font-size:.88em;color:var(--brand-2);font-weight:500}:root[data-theme=light] .lesson-article code{background:color-mix(in oklab,var(--brand) 8%,var(--panel2));color:color-mix(in oklab,var(--brand) 70%,var(--text))}.lesson-article pre.code{background:var(--term-bg);color:var(--term-text);border:1px solid var(--border-2);border-radius:var(--radius);padding:16px 18px;overflow:auto;font-size:13.5px;line-height:1.65;position:relative;margin:18px 0;box-shadow:var(--shadow-sm)}.lesson-article pre.code code{background:transparent;border:0;padding:0;font-size:inherit;color:inherit;font-weight:400}.tk-comment{color:#6c7587;font-style:italic}.tk-string{color:#a5d6ff}.tk-keyword{color:#ff7b72;font-weight:600}.tk-cmd{color:#d2a8ff;font-weight:600}.tk-flag{color:#f0883e}.tk-var{color:#79c0ff}.tk-num{color:#ffa657}.tk-attr{color:#79c0ff}.tk-key{color:#7ee787;font-weight:500}.tk-prompt{color:#56d364}:root[data-theme=light]{--hl-comment: #6a737d;--hl-string: #032f62;--hl-keyword: #d73a49;--hl-cmd: #6f42c1;--hl-flag: #e36209;--hl-var: #005cc5;--hl-num: #b35a00;--hl-attr: #005cc5;--hl-key: #22863a;--hl-prompt: #22863a}:root[data-theme=light] .tk-comment{color:var(--hl-comment)}:root[data-theme=light] .tk-string{color:var(--hl-string)}:root[data-theme=light] .tk-keyword{color:var(--hl-keyword)}:root[data-theme=light] .tk-cmd{color:var(--hl-cmd)}:root[data-theme=light] .tk-flag{color:var(--hl-flag)}:root[data-theme=light] .tk-var{color:var(--hl-var)}:root[data-theme=light] .tk-num{color:var(--hl-num)}:root[data-theme=light] .tk-attr{color:var(--hl-attr)}:root[data-theme=light] .tk-key{color:var(--hl-key)}:root[data-theme=light] .tk-prompt{color:var(--hl-prompt)}.lesson-article ul,.lesson-article ol{padding-left:28px;margin:14px 0}.lesson-article li{margin:8px 0;line-height:1.7;color:var(--text);padding-left:4px}.lesson-article li::marker{color:var(--brand);font-weight:700}.lesson-article ul ul,.lesson-article ol ol,.lesson-article ul ol,.lesson-article ol ul{margin:4px 0}.lesson-article blockquote{position:relative;padding:16px 20px;margin:22px 0;background:color-mix(in oklab,var(--brand) 5%,var(--panel2));border-top:1px solid color-mix(in oklab,var(--brand) 40%,var(--border));border-bottom:1px solid color-mix(in oklab,var(--brand) 40%,var(--border));border-radius:0;color:var(--text);font-size:15.5px;line-height:1.65;font-style:italic}.lesson-article blockquote:before{content:"";position:absolute;top:6px;right:14px;width:6px;height:6px;border-radius:50%;background:var(--brand);opacity:.7}.lesson-article blockquote p{margin:6px 0}.lesson-article blockquote :first-child{margin-top:0}.lesson-article blockquote :last-child{margin-bottom:0}.lesson-article hr{border:none;border-top:1px solid var(--border);margin:32px 0}.code-copy{position:absolute;right:8px;top:8px;background:color-mix(in oklab,var(--panel) 80%,transparent);color:var(--muted);border:1px solid var(--border);border-radius:6px;padding:4px 9px;font-size:11px;cursor:pointer;opacity:0;transition:opacity .15s var(--ease),color .15s var(--ease),border-color .15s var(--ease),background .15s var(--ease)}.lesson-article pre.code:hover .code-copy{opacity:1}.code-copy:hover{color:var(--brand);border-color:color-mix(in oklab,var(--brand) 40%,var(--border))}.code-copy.copied{color:var(--ok);border-color:var(--ok)}.md-table-wrap{overflow-x:auto;max-width:100%;margin:18px 0;-webkit-overflow-scrolling:touch;border-radius:var(--radius-sm)}.md-table-wrap:focus-visible{outline:2px solid var(--brand);outline-offset:2px}.md-table-wrap>.md-table{margin:0}.md-table{width:100%;border-collapse:collapse;margin:18px 0;font-size:14.5px;border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden}.md-table th,.md-table td{padding:10px 14px;border-bottom:1px solid var(--border);text-align:left;vertical-align:top;line-height:1.55}.md-table th{background:color-mix(in oklab,var(--brand) 8%,var(--panel2));font-weight:600;color:var(--text);border-bottom-width:2px;border-bottom-color:color-mix(in oklab,var(--brand) 30%,var(--border))}.md-table tr:last-child td{border-bottom:0}.md-table tr:hover td{background:color-mix(in oklab,var(--brand) 4%,transparent)}.md-table code{font-size:.9em}.lesson-article .md-table{max-width:none}.modal-backdrop{position:fixed;inset:0;z-index:60;background:#02040cb8;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);display:flex;align-items:center;justify-content:center;padding:20px;animation:fadeIn .18s var(--ease)}.modal{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px;padding-bottom:max(24px,env(safe-area-inset-bottom));width:min(720px,100%);max-height:86vh;max-height:86dvh;overflow:auto;box-shadow:var(--shadow-lg);animation:fadeUp .25s var(--ease) both}.modal h3{margin:0 0 14px;font-size:19px;font-weight:700}.modal textarea{width:100%;min-height:240px;resize:vertical;background:var(--term-bg);color:var(--term-text);border:1px solid var(--border-2);border-radius:var(--radius);padding:12px;font:13px/1.6 var(--font-mono);outline:none}.modal textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px color-mix(in oklab,var(--brand) 18%,transparent)}.modal .row{justify-content:flex-end;gap:10px}code{background:var(--panel2);padding:2px 6px;border-radius:6px;border:1px solid var(--border);font-size:.92em}kbd{background:var(--panel2);border:1px solid var(--border);border-bottom-width:2px;border-radius:6px;padding:1px 6px;font-family:var(--font-mono);font-size:12px}.toast-host{position:fixed;top:80px;right:20px;z-index:80;display:flex;flex-direction:column;gap:10px;pointer-events:none;width:min(360px,calc(100% - 40px))}.toast{pointer-events:auto;display:flex;gap:12px;align-items:flex-start;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:14px;box-shadow:var(--shadow-lg);transform:translate(20px);opacity:0;transition:transform .25s var(--ease-out),opacity .2s var(--ease);position:relative;overflow:hidden}.toast:before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--brand)}.toast.show{transform:translate(0);opacity:1}.toast.hide{transform:translate(20px);opacity:0}.toast-success:before{background:var(--ok)}.toast-warn:before{background:var(--warn)}.toast-achievement:before{background:linear-gradient(180deg,var(--warn),var(--brand-3))}.toast-icon{width:32px;height:32px;display:inline-flex;align-items:center;justify-content:center;border-radius:8px;background:color-mix(in oklab,var(--brand) 12%,transparent);color:var(--brand);font-size:16px;font-weight:700;flex-shrink:0}.toast-success .toast-icon{background:color-mix(in oklab,var(--ok) 14%,transparent);color:var(--ok)}.toast-warn .toast-icon{background:color-mix(in oklab,var(--warn) 14%,transparent);color:var(--warn)}.toast-achievement .toast-icon{background:color-mix(in oklab,var(--warn) 14%,transparent);color:var(--warn);font-size:18px}.toast-body{flex:1;min-width:0}.toast-title{font-weight:600;font-size:14px;line-height:1.4}.toast-text{color:var(--muted);font-size:12.5px;margin-top:2px;line-height:1.45}.toast-actions{margin-top:10px;display:flex;gap:8px}.toast-action{font-size:13px;padding:6px 14px;border-radius:6px;border:0;cursor:pointer;font-weight:600}.toast-action.primary{background:var(--accent, #4d8eff);color:var(--accent-on, #fff)}.toast-action.primary:hover{filter:brightness(1.08)}.toast-action:focus-visible{outline:2px solid var(--accent, #4d8eff);outline-offset:2px}.toast-close{background:transparent;border:0;color:var(--muted);cursor:pointer;padding:2px 6px;font-size:14px;border-radius:4px}.toast-close:hover{color:var(--text);background:var(--panel2)}@media (max-width: 600px){.toast-host{top:12px;right:12px;left:12px;width:auto}}.legal-footer{max-width:var(--content-w);margin:32px auto 16px;padding:16px 20px 24px;border-top:1px solid var(--border);color:var(--muted);font-size:12px;line-height:1.55;text-align:center}.legal-footer-row{margin-bottom:8px}.legal-footer-links{display:inline-flex;flex-wrap:wrap;gap:6px;justify-content:center}.legal-footer-links a{color:var(--text-2);text-decoration:none;border-bottom:1px dashed transparent;transition:color .15s var(--ease),border-color .15s var(--ease)}.legal-footer-links a:hover{color:var(--brand);border-bottom-color:var(--brand)}.legal-footer-link-btn{background:transparent;border:0;padding:0;font:inherit;color:var(--text-2);cursor:pointer;border-bottom:1px dashed transparent;transition:color .15s var(--ease),border-color .15s var(--ease)}.legal-footer-link-btn:hover,.legal-footer-link-btn:focus-visible{color:var(--brand);border-bottom-color:var(--brand);outline:none}.hint-row{margin:8px 0 12px}.hint-chip{display:inline-flex;align-items:center;gap:6px;background:var(--panel2);border:1px solid var(--border);color:var(--text-2);padding:4px 12px;border-radius:999px;font-size:13px;cursor:pointer;transition:background .15s var(--ease),color .15s var(--ease)}.hint-chip:hover,.hint-chip:focus-visible{background:var(--panel);color:var(--text);outline:none}.hint-chip[aria-expanded=true]{background:var(--panel);border-color:var(--accent, #4d8eff);color:var(--accent, #4d8eff)}.hint-text{margin-top:8px;padding:10px 14px;border-left:3px solid var(--accent, #4d8eff);background:var(--panel2);font-size:14px;line-height:1.5;border-radius:0 6px 6px 0;color:var(--text)}.hint-text.hidden{display:none}.errata-hero{display:block}.errata-summary{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px}.errata-counter{font-size:12.5px;padding:4px 10px;border-radius:999px;border:1px solid var(--border);background:var(--panel);color:var(--text-2)}.errata-counter.errata-status-open{border-color:var(--warn, #c89400);color:var(--warn, #c89400)}.errata-counter.errata-status-fixing{border-color:var(--accent, #4d8eff);color:var(--accent, #4d8eff)}.errata-counter.errata-status-fixed{border-color:var(--ok, #2c8c3a);color:var(--ok, #2c8c3a)}.errata-list{display:grid;gap:14px}.errata-entry{border:1px solid var(--border);border-radius:10px;padding:14px 16px;background:var(--panel)}.errata-entry-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:8px}.errata-kind{font-size:11.5px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}.errata-status{font-size:11.5px;font-weight:600;padding:2px 8px;border-radius:999px;border:1px solid var(--border)}.errata-status.errata-status-open{color:var(--warn, #c89400);border-color:var(--warn, #c89400)}.errata-status.errata-status-fixing{color:var(--accent, #4d8eff);border-color:var(--accent, #4d8eff)}.errata-status.errata-status-fixed{color:var(--ok, #2c8c3a);border-color:var(--ok, #2c8c3a)}.errata-status.errata-status-rejected{color:var(--muted)}.errata-ref code{font-size:12px;background:var(--panel2);padding:1px 6px;border-radius:4px}.errata-reason{margin:6px 0 8px;line-height:1.5}.errata-reporter-link{color:inherit;text-decoration:underline}.errata-commit{font-size:11.5px;background:var(--panel2);padding:1px 5px;border-radius:3px}.question-errata{margin-top:22px;padding-top:18px;border-top:1px solid var(--border)}.question-errata h3{margin:0 0 12px;font-size:14px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}.question-errata-list{list-style:none;margin:0;padding:0;display:grid;gap:10px}.question-errata-item{border:1px solid var(--border);border-radius:8px;padding:10px 14px;background:var(--panel)}.question-errata-item .errata-reason{margin:6px 0}@media (max-width: 600px){.legal-footer{margin-bottom:calc(80px + env(safe-area-inset-bottom));padding:12px 16px}}.bottom-nav{display:none;position:fixed;left:0;right:0;bottom:0;z-index:40;padding:8px 12px calc(8px + env(safe-area-inset-bottom));background:color-mix(in oklab,var(--panel) 90%,transparent);backdrop-filter:saturate(160%) blur(14px);-webkit-backdrop-filter:saturate(160%) blur(14px);border-top:1px solid var(--border);gap:4px}.bottom-tab{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;background:transparent;color:var(--muted);border:0;padding:8px 4px;border-radius:10px;font:inherit;font-size:11px;font-weight:500;cursor:pointer;transition:background .15s var(--ease),color .15s var(--ease);-webkit-tap-highlight-color:transparent}.bottom-tab svg{display:block}.bottom-tab:hover{color:var(--text)}.bottom-tab.active{color:var(--brand);background:color-mix(in oklab,var(--brand) 14%,transparent);font-weight:600;position:relative}.bottom-tab.active:before{content:"";position:absolute;top:0;left:18%;right:18%;height:2px;background:var(--brand);border-radius:0 0 2px 2px}.more-sheet-backdrop{position:fixed;inset:0;z-index:65;background:#02040c99;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);display:flex;align-items:flex-end;justify-content:center;animation:fadeIn .18s var(--ease)}.more-sheet{width:100%;max-width:560px;background:var(--panel);border-top:1px solid var(--border);border-top-left-radius:var(--radius-lg);border-top-right-radius:var(--radius-lg);padding:12px 18px max(20px,env(safe-area-inset-bottom));box-shadow:var(--shadow-lg);animation:fadeUp .22s var(--ease) both}.more-sheet-handle{width:44px;height:4px;background:var(--border-2);border-radius:999px;margin:4px auto 12px}.more-sheet-title{margin:0 0 12px;font-size:16px;font-weight:700;color:var(--text)}.more-sheet-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.more-sheet-item{display:flex;align-items:center;gap:12px;padding:14px;min-height:56px;background:var(--panel2);border:1px solid var(--border);border-radius:var(--radius);color:var(--text);font:inherit;font-weight:500;text-align:left;cursor:pointer}.more-sheet-item:hover{border-color:color-mix(in oklab,var(--brand) 40%,var(--border));background:color-mix(in oklab,var(--brand) 6%,var(--panel2))}.more-sheet-item:focus-visible{outline:2px solid var(--brand);outline-offset:2px}.more-sheet-icon{display:inline-flex;align-items:center;justify-content:center;color:var(--brand)}.more-sheet-close{width:100%;margin-top:14px;min-height:44px}@keyframes fadeUp{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes pulseRing{0%{box-shadow:0 0 color-mix(in oklab,var(--brand) 60%,transparent)}to{box-shadow:0 0 0 14px transparent}}main>section{animation:fadeUp .22s var(--ease) both}main>section:nth-child(2){animation-delay:.04s}main>section:nth-child(3){animation-delay:.08s}main>section:nth-child(4){animation-delay:.12s}.lesson-body{animation:fadeIn .25s var(--ease) both}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}.lesson-notes{margin-top:18px;padding:12px 14px;background:var(--panel2);border:1px solid var(--border);border-radius:var(--radius)}.lesson-notes summary{cursor:pointer;font-weight:600}.lesson-notes textarea{width:100%;min-height:140px;margin-top:10px;padding:10px 12px;background:var(--panel);border:1px solid var(--border);border-radius:8px;color:var(--text);font:inherit;font-size:14px;resize:vertical}.lesson-notes .notes-foot{margin-top:6px}.bookmarks-cert-list{display:grid;gap:14px}.bookmarks-cert-block{padding:12px 14px;background:var(--panel2);border:1px solid var(--border);border-radius:var(--radius)}.bookmarks-cert-head{display:flex;gap:12px;align-items:center;justify-content:space-between;flex-wrap:wrap;margin-bottom:10px}.bookmarks-cert-head h3{margin:0;font-size:16px}.bookmarks-topic-chips{display:flex;flex-wrap:wrap;gap:6px}.bookmarks-topic-chips .topic-chip{background:var(--panel3);border:1px solid var(--border);padding:4px 10px;border-radius:999px;font-size:12px}.bookmarks-notes-list{list-style:none;padding:0;margin:0;display:grid;gap:6px}.bookmarks-note-row{display:grid;grid-template-columns:100px 120px 1fr;gap:10px;align-items:center;width:100%;text-align:left;padding:10px 14px;background:var(--panel2);border:1px solid var(--border);border-radius:8px;cursor:pointer;font:inherit;color:var(--text)}.bookmarks-note-row:hover{border-color:var(--brand-2)}.bookmarks-note-cert{justify-self:start}.empty-state{color:var(--muted)}.career-completion{margin-top:18px;padding:14px 18px;display:flex;gap:14px;align-items:center;justify-content:space-between;flex-wrap:wrap;background:color-mix(in oklab,var(--ok) 12%,var(--panel2));border:1px solid color-mix(in oklab,var(--ok) 35%,var(--border));border-radius:var(--radius)}.career-completion-title{font-weight:700;font-size:16px;display:inline-flex;align-items:center;gap:8px}.career-completion-title svg{color:var(--career-color, var(--brand))}.daily-challenge-card{margin:18px 0;position:relative;overflow:visible}.dc-stamp{position:absolute;top:-12px;right:22px;z-index:2;display:inline-block;padding:5px 11px 4px;font-family:var(--font-mono);font-size:10.5px;font-weight:700;letter-spacing:.18em;color:var(--brand);background:var(--panel);border:1.5px solid var(--brand);border-radius:2px;transform:rotate(-2.5deg);box-shadow:1.5px 1.5px color-mix(in oklab,var(--brand) 22%,transparent);white-space:nowrap;user-select:none;background-image:linear-gradient(var(--panel),var(--panel)),repeating-linear-gradient(135deg,color-mix(in oklab,var(--brand) 30%,transparent) 0,color-mix(in oklab,var(--brand) 30%,transparent) 1px,transparent 1px,transparent 4px);background-blend-mode:normal}.daily-challenge-card.done .dc-stamp{color:var(--ok);border-color:var(--ok);box-shadow:1.5px 1.5px color-mix(in oklab,var(--ok) 22%,transparent);transform:rotate(0)}.daily-challenge-card.done{opacity:.85}.daily-challenge-card.empty{opacity:.92}.daily-challenge-card.empty .dc-stamp{color:var(--muted);border-color:var(--border-2);box-shadow:1.5px 1.5px color-mix(in oklab,var(--muted) 22%,transparent)}.dc-head{display:flex;gap:14px;align-items:center;justify-content:space-between;flex-wrap:wrap;margin-bottom:12px}.dc-title{font-size:16px;font-weight:700}.dc-body{display:grid;gap:6px}.dc-item{display:grid;grid-template-columns:28px 80px 1fr auto;gap:10px;align-items:center;padding:8px 12px;background:var(--panel2);border:1px solid var(--border);border-radius:8px;font-size:13px}.dc-num{width:24px;height:24px;display:grid;place-items:center;background:var(--panel3);border-radius:50%;font-weight:600;font-size:11px}.dc-cert{font-size:11px}.dc-topic{color:var(--text-2)}.dc-tag{font-size:11px;padding:2px 8px;border-radius:999px;text-transform:uppercase;letter-spacing:.04em}.dc-tag-mistake{background:color-mix(in oklab,var(--bad) 22%,transparent);color:var(--bad)}.dc-tag-due{background:color-mix(in oklab,var(--warn) 22%,transparent);color:var(--warn)}.dc-tag-fresh{background:color-mix(in oklab,var(--brand) 18%,transparent);color:var(--brand)}.gs-modal{max-height:80vh}.gs-hit{align-items:flex-start;padding:12px 16px}.gs-hit .cmdk-icon{padding-top:4px}.gs-hit .gs-title{font-weight:600;font-size:14px}.gs-hit .gs-meta{margin:2px 0 6px}.gs-hit .gs-snippet{font-size:12px;line-height:1.5;color:var(--text-2);white-space:normal;word-break:break-word}.gs-hit mark{background:color-mix(in oklab,var(--brand-2) 35%,transparent);color:var(--text);padding:0 2px;border-radius:2px}.confetti-layer{position:fixed;inset:0;pointer-events:none;z-index:9999;overflow:hidden}.confetti-piece{position:absolute;border-radius:2px;will-change:transform,opacity,top,left}:root.mock-focus-mode .topbar,:root.mock-focus-mode .bottom-nav,:root.mock-focus-mode .legal-footer,:root.mock-focus-mode .pomo-badge,:root.mock-focus-mode #cmdk-open,:root.mock-focus-mode #settings-open,:root.mock-focus-mode .pwa-install,:root.mock-focus-mode .offline-pill{display:none!important}:root.mock-focus-mode main{padding-top:0!important}.mock-tabswitch{display:inline-flex;align-items:center;gap:4px;padding:0 8px;border-left:1px solid var(--border);border-right:1px solid var(--border)}.ai-modal .ai-pre{background:var(--panel2);border:1px solid var(--border);border-radius:8px;padding:10px 12px;font-family:var(--font-mono);font-size:12px;line-height:1.5;white-space:pre-wrap;max-height:200px;overflow:auto}.ai-source summary,.ai-prompt summary{cursor:pointer;font-weight:600}.ai-terms{list-style:none;padding:0;margin:0;display:grid;gap:8px}.ai-terms li{padding:8px 12px;background:var(--panel2);border:1px solid var(--border);border-radius:8px}.ai-related{list-style:none;padding:0;margin:0;display:grid;gap:6px}.ai-related-btn{display:block;width:100%;text-align:left;background:transparent;color:var(--text);border:1px solid var(--border);border-radius:8px;padding:8px 12px;cursor:pointer;font:inherit}.ai-related-btn:hover{border-color:var(--brand-2);background:color-mix(in oklab,var(--brand-2) 8%,var(--panel2))}.stats-tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:12px;margin-top:14px}.stats-heatmap{display:grid;grid-template-columns:repeat(15,1fr);gap:4px}.hm-cell{aspect-ratio:1 / 1;border-radius:3px;background:var(--panel3)}.hm-cell.l1{background:color-mix(in oklab,var(--brand) 30%,var(--panel3))}.hm-cell.l2{background:color-mix(in oklab,var(--brand) 55%,var(--panel3))}.hm-cell.l3{background:color-mix(in oklab,var(--brand) 78%,var(--panel3))}.hm-cell.l4{background:var(--brand)}.stats-cert-list{display:grid;gap:10px;margin-top:10px}.stats-cert-row{display:grid;grid-template-columns:200px 1fr 80px;gap:14px;align-items:center;padding:12px;background:var(--panel2);border:1px solid var(--border);border-radius:var(--radius)}.stats-cert-name{font-weight:600}.stats-cert-bars{display:grid;gap:6px}.stats-bar{position:relative;height:18px;background:var(--panel3);border-radius:4px;overflow:hidden}.stats-bar>span{display:block;height:100%;transition:width .3s var(--ease)}.stats-bar>span.ok{background:var(--ok)}.stats-bar>span.warn{background:var(--warn)}.stats-bar>span.bad{background:var(--bad)}.stats-bar em{position:absolute;left:8px;top:50%;transform:translateY(-50%);font-style:normal;font-size:11px;color:var(--text-2);mix-blend-mode:difference}.stats-cert-counts{font-variant-numeric:tabular-nums;text-align:right}@media (max-width: 700px){.stats-cert-row{grid-template-columns:1fr}.stats-cert-counts{text-align:left}}.concept-map{display:flex;flex-direction:column;gap:12px}.concept-map-legend{display:flex;flex-wrap:wrap;gap:14px;align-items:center}.concept-map-legend .cm-dot{display:inline-block;width:10px;height:10px;border-radius:50%;margin-right:4px;vertical-align:middle}.concept-map-canvas{overflow-x:auto;background:var(--panel2);border:1px solid var(--border);border-radius:var(--radius);padding:14px;color:var(--text-2)}.concept-map-canvas svg{display:block;min-width:700px}.cm-node{cursor:pointer;transition:filter .15s var(--ease)}.cm-node:hover{filter:brightness(1.15)}.cm-node:focus-visible rect{stroke:var(--brand-2);stroke-width:2.5}.cm-node text{fill:var(--text);font-family:var(--font-sans)}.cm-edge{color:color-mix(in oklab,var(--muted) 60%,transparent)}.cheat-modal textarea{width:100%;min-height:360px;padding:14px 16px;background:var(--panel2);border:1px solid var(--border);border-radius:var(--radius);font-family:var(--font-mono);font-size:12px;line-height:1.5;color:var(--text-2);resize:vertical}.shortcuts-grid{display:grid;gap:14px}.sc-group-title{margin:0 0 6px;font-size:13px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}.sc-list{list-style:none;padding:0;margin:0;display:grid;gap:6px}.sc-row{display:grid;grid-template-columns:180px 1fr;align-items:center;gap:14px;padding:8px 4px;border-bottom:1px dashed var(--border);font-size:14px}.sc-keys{display:inline-flex;align-items:center;gap:4px;flex-wrap:wrap}.sc-keys kbd{background:var(--panel3);border:1px solid var(--border);border-radius:6px;padding:2px 8px;font-family:var(--font-mono);font-size:12px;min-width:24px;text-align:center}.sc-plus{color:var(--muted);font-size:12px}.sc-desc{color:var(--text-2)}@media print{body{background:#fff;color:#000}.topbar,.bottom-nav,.legal-footer,.pomo-badge,.pwa-install,.offline-pill,#cmdk-open,#settings-open,#theme-toggle,#lang,#cert,.lesson-side,.lesson-actions,.lesson-nav,.quick-quiz-cta,.mastery-cta,.skip-link{display:none!important}.lessons{display:block}.lesson-body{padding:0!important}.card{border:0!important;box-shadow:none!important}.lesson-article{max-width:none}pre.code,code{background:#f5f5f5!important;color:#111!important;border:1px solid #ddd!important}.glossary-term{border-bottom:1px dotted #555}a,a:visited{color:#1a4ea0;text-decoration:underline}a[href^=http]:after{content:" (" attr(href) ")";font-size:90%;color:#555}h1,h2,h3{page-break-after:avoid}pre,table,blockquote{page-break-inside:avoid}}.mastery-cta{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:14px 18px;margin:18px 0 10px;background:color-mix(in oklab,var(--brand-2) 9%,var(--panel2));border:1px solid color-mix(in oklab,var(--brand-2) 30%,var(--border));border-radius:var(--radius)}.mastery-cta-title{font-weight:600;font-size:15px}.mastery-modal .mas-question{font-size:16px;line-height:1.5;margin-bottom:12px}.mas-choices{list-style:none;margin:0;padding:0;display:grid;gap:8px}.mas-choice{display:grid;grid-template-columns:30px 1fr;gap:10px;align-items:center;padding:10px 14px;border:1.5px solid var(--border);border-radius:10px;background:var(--panel2);cursor:pointer;font-size:14px;transition:border-color .15s var(--ease),background .15s var(--ease)}.mas-choice:hover{background:var(--panel3)}.mas-choice.selected{border-color:var(--brand);background:color-mix(in oklab,var(--brand) 12%,var(--panel2))}.mas-choice-letter{width:26px;height:26px;border-radius:50%;display:grid;place-items:center;background:var(--panel3);color:var(--text-2);font-weight:600;font-size:12px}.mas-choice.selected .mas-choice-letter{background:var(--brand);color:var(--on-brand)}.mas-result{text-align:center;padding:18px 0}.mas-result-pct{font-size:56px;font-weight:800;line-height:1}.mas-result.pass .mas-result-pct{color:var(--ok)}.mas-result.fail .mas-result-pct{color:var(--bad)}.mas-result-line{margin-top:8px;font-size:16px;color:var(--text-2)}.careers-head{display:flex;flex-direction:column;gap:6px}.careers-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:14px;margin-top:14px}.career-card{--career-color: var(--brand);position:relative;display:grid;grid-template-columns:56px 1fr;gap:14px;align-items:flex-start;text-align:left;padding:18px;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius-lg);cursor:pointer;font:inherit;color:var(--text);transition:transform .15s var(--ease),box-shadow .15s var(--ease),border-color .15s var(--ease)}.career-card:after{content:"";position:absolute;top:14px;right:14px;width:8px;height:8px;border-radius:50%;background:var(--career-color);box-shadow:0 0 0 3px color-mix(in oklab,var(--career-color) 18%,transparent)}.career-card:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:color-mix(in oklab,var(--career-color) 50%,var(--border))}.career-card-icon{width:48px;height:48px;border-radius:12px;display:grid;place-items:center;background:color-mix(in oklab,var(--career-color) 15%,var(--panel2));border:1px solid color-mix(in oklab,var(--career-color) 30%,var(--border));color:var(--career-color)}.career-card-icon svg{display:block}.career-meta-pill{display:inline-flex;align-items:center;gap:4px;color:var(--muted)}.career-card-name{font-size:16px;font-weight:700}.career-card-tag{margin:4px 0 8px}.career-card-meta{display:flex;gap:6px;font-size:12px}.career-card-progress{display:grid;grid-template-columns:1fr 40px;gap:8px;align-items:center;margin-top:12px}.career-card-progress .bar{height:8px;background:var(--panel3);border-radius:999px;overflow:hidden}.career-card-progress .bar>span{display:block;height:100%;transition:width .3s var(--ease)}.career-card-progress .pct{font-size:12px;font-variant-numeric:tabular-nums;color:var(--muted);text-align:right}.career-detail{--career-color: var(--brand);position:relative}.career-detail:before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--career-color),color-mix(in oklab,var(--career-color) 35%,transparent) 60%,transparent);border-radius:var(--radius-lg) var(--radius-lg) 0 0}.career-detail-head{display:grid;grid-template-columns:64px 1fr;gap:16px;align-items:center;margin:14px 0 6px}.career-detail-icon{width:56px;height:56px;border-radius:14px;display:grid;place-items:center;background:color-mix(in oklab,var(--career-color) 15%,var(--panel2));border:1px solid color-mix(in oklab,var(--career-color) 30%,var(--border));color:var(--career-color)}.career-detail-icon svg{display:block}.career-detail-meta{display:flex;gap:6px;flex-wrap:wrap;color:var(--muted);font-size:13px}.career-skills{display:flex;flex-wrap:wrap;gap:6px;margin:12px 0}.career-skill{padding:4px 10px;background:color-mix(in oklab,var(--career-color, var(--brand)) 14%,var(--panel2));border:1px solid color-mix(in oklab,var(--career-color, var(--brand)) 30%,var(--border));border-radius:999px;font-size:12px}.career-salary{margin:14px 0 6px;padding:12px 14px;border:1px dashed var(--border-2);border-radius:var(--radius);background:var(--panel2)}.career-sequence{margin-top:24px}.career-items{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}.career-item{display:grid;grid-template-columns:36px 1fr;gap:14px;padding:14px 16px;border:1px solid var(--border);border-radius:var(--radius);background:var(--panel)}.career-item.done{border-color:color-mix(in oklab,var(--ok) 40%,var(--border));background:color-mix(in oklab,var(--ok) 5%,var(--panel))}.career-item.active{border-color:color-mix(in oklab,var(--brand) 40%,var(--border))}.career-item-num{width:32px;height:32px;border-radius:50%;display:grid;place-items:center;background:var(--panel2);color:var(--text-2);font-weight:700}.career-item.done .career-item-num{background:var(--ok);color:#052914}.career-item-row{display:flex;gap:12px;align-items:center;justify-content:space-between;flex-wrap:wrap}.career-item-title{font-weight:600}.career-item-progress{display:grid;grid-template-columns:1fr auto;gap:10px;align-items:center;margin-top:8px}.career-item-progress .bar{height:6px;background:var(--panel3);border-radius:999px;overflow:hidden}.career-item-progress .bar>span{display:block;height:100%;background:var(--brand);transition:width .3s var(--ease)}.career-item.done .career-item-progress .bar>span{background:var(--ok)}.career-item-cta{padding:6px 12px;font-size:13px}.career-related-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:10px}.career-related-card{text-align:left;padding:12px 14px;cursor:pointer;background:var(--panel2);border:1px solid var(--border);border-radius:var(--radius);color:var(--text);font:inherit;transition:border-color .15s var(--ease)}.career-related-card:hover{border-color:var(--brand-2)}.career-related-topic{text-transform:uppercase;letter-spacing:.04em;font-size:11px}.career-related-title{font-weight:600;margin:4px 0}.glossary-term{text-decoration:none;border-bottom:1px dotted color-mix(in oklab,var(--brand) 70%,transparent);cursor:help}.glossary-term:hover,.glossary-term:focus{background:color-mix(in oklab,var(--brand) 12%,transparent);outline:none}.glossary-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:12px}.glossary-card{background:var(--panel2);border:1px solid var(--border);border-radius:var(--radius);padding:12px 14px}.glossary-term-name{font-family:var(--font-mono);font-weight:600;font-size:14px;color:var(--brand-2)}.glossary-aliases{display:inline;margin-left:6px;font-size:12px;color:var(--muted)}.glossary-def{margin-top:6px;font-size:13px;line-height:1.5;color:var(--text-2)}.glossary-search{width:100%;padding:10px 14px;background:var(--panel2);border:1px solid var(--border);border-radius:var(--radius);color:var(--text);font:inherit;margin-bottom:16px}.offline-pill{position:fixed;bottom:calc(20px + env(safe-area-inset-bottom));left:16px;z-index:70;display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;background:color-mix(in oklab,var(--warn) 20%,var(--panel2));color:var(--text);border:1px solid color-mix(in oklab,var(--warn) 50%,var(--border));box-shadow:var(--shadow-sm);font-size:12px;animation:fadeUp .2s var(--ease-out) both}.offline-dot{width:8px;height:8px;border-radius:50%;background:var(--warn);box-shadow:0 0 0 4px color-mix(in oklab,var(--warn) 25%,transparent)}.pwa-install{position:fixed;bottom:calc(20px + env(safe-area-inset-bottom));right:16px;z-index:80;max-width:360px;display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:var(--radius);background:var(--panel);border:1px solid var(--border-2);box-shadow:var(--shadow);animation:fadeUp .25s var(--ease-out) both}.pwa-text{flex:1 1 auto;min-width:0}.pwa-title{font-weight:600;font-size:14px}.pwa-actions{display:inline-flex;gap:6px}@media (max-width: 600px){.pwa-install{left:16px;right:16px;max-width:none;bottom:calc(72px + env(safe-area-inset-bottom))}.offline-pill{bottom:calc(72px + env(safe-area-inset-bottom))}}.onboarding .onb-head{display:flex;align-items:center;justify-content:space-between;gap:12px;position:sticky;top:0;z-index:2;background:var(--panel);padding-bottom:8px;margin-bottom:-4px}.onboarding h2{margin:0}.onb-steps{list-style:none;margin:12px 0 18px;padding:0;display:flex;gap:8px;align-items:center;counter-reset:step}.onb-steps li{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:var(--panel2);color:var(--muted);border:1px solid var(--border);font-size:12px;font-weight:600}.onb-steps li.active{background:var(--brand);color:var(--on-brand);border-color:var(--brand)}.onb-steps li.done{background:var(--ok);color:#042916;border-color:var(--ok)}.onb-options{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:10px}.onb-opt{display:flex;align-items:center;gap:10px;padding:14px 16px;border-radius:12px;background:var(--panel2);border:2px solid transparent;color:var(--text);font:inherit;cursor:pointer;transition:border-color .15s var(--ease),background .15s var(--ease);text-align:left}.onb-opt:hover{background:var(--panel3)}.onb-opt.active{border-color:var(--brand);background:color-mix(in oklab,var(--brand) 14%,var(--panel2))}.onb-opt-icon{color:var(--brand);display:inline-flex;align-items:center;justify-content:center}.onb-opt.active .onb-opt-icon{color:var(--text)}.onb-cert-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:8px;max-height:320px;overflow:auto;padding-right:4px}.onb-cert{background:var(--panel2);border:1px solid var(--border);border-radius:10px;padding:10px 12px;text-align:left;cursor:pointer;color:var(--text);font:inherit;transition:border-color .15s var(--ease),background .15s var(--ease)}.onb-cert:hover{border-color:var(--brand-2)}.onb-cert.active{border-color:var(--brand);background:color-mix(in oklab,var(--brand) 14%,var(--panel2))}.onb-cert-name{font-weight:600;font-size:14px}.onb-foot{justify-content:space-between;margin-top:18px}.set-group{border:1px solid var(--border);border-radius:var(--radius);padding:12px 14px;margin:0 0 14px}.set-group legend{padding:0 6px;font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}.set-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:8px 0}.set-row+.set-row{border-top:1px dashed var(--border)}.set-row>span:first-child{color:var(--text-2);font-size:14px}.set-row select{padding:6px 10px;background:var(--panel2);color:var(--text);border:1px solid var(--border);border-radius:8px;font:inherit;font-size:14px;min-width:160px}.set-row-stack{display:flex;flex-direction:column;gap:8px;padding:10px 0}.set-row-stack+.set-row-stack{border-top:1px dashed var(--border)}.set-row-stack .set-label{color:var(--text-2);font-size:14px;font-weight:500}.cmdk-backdrop{position:fixed;inset:0;z-index:9000;background:color-mix(in oklab,#000 50%,transparent);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);display:flex;align-items:flex-start;justify-content:center;padding-top:12vh;animation:fadeIn .12s var(--ease) both}.cmdk{width:min(640px,calc(100% - 24px));background:var(--panel);border:1px solid var(--border-2);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);display:flex;flex-direction:column;max-height:70vh;animation:fadeUp .18s var(--ease-out) both;overflow:hidden}.cmdk-head{border-bottom:1px solid var(--border)}.cmdk-input{width:100%;background:transparent;border:0;padding:14px 16px;font:inherit;font-size:15px;color:var(--text);outline:none}.cmdk-input::placeholder{color:var(--muted)}.cmdk-list{list-style:none;margin:0;padding:6px 0;overflow:auto;flex:1 1 auto}.cmdk-section{padding:8px 16px 4px;font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}.cmdk-item{display:grid;grid-template-columns:24px 1fr auto;gap:10px;align-items:center;padding:8px 16px;cursor:pointer;font-size:14px}.cmdk-item.active{background:color-mix(in oklab,var(--brand) 14%,transparent)}.cmdk-item .cmdk-icon{text-align:center;opacity:.8}.cmdk-item .cmdk-hint{justify-self:end}.cmdk-empty{padding:20px 16px;text-align:center}.cmdk-foot{display:flex;gap:16px;justify-content:flex-end;padding:8px 16px;border-top:1px solid var(--border);font-size:11px}.cmdk-foot kbd{padding:1px 6px;border-radius:4px;background:var(--panel3);border:1px solid var(--border);font-family:var(--font-mono);font-size:10px;margin-right:4px}.skeleton{display:flex;flex-direction:column;gap:16px;padding:18px 0}.skeleton-block{background:linear-gradient(90deg,color-mix(in oklab,var(--panel) 88%,transparent),color-mix(in oklab,var(--panel2) 92%,transparent),color-mix(in oklab,var(--panel) 88%,transparent));background-size:200% 100%;border:1px solid var(--border);border-radius:var(--radius-lg);animation:skeleton-shimmer 1.4s linear infinite}.skeleton-block.hero{height:220px}.skeleton-block.card{height:140px;flex:1 1 240px;min-width:240px}.skeleton-row{display:flex;gap:16px;flex-wrap:wrap}@keyframes skeleton-shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}@media (prefers-reduced-motion: reduce){.skeleton-block{animation:none}}.skip-link{position:absolute;top:-40px;left:8px;z-index:100;padding:8px 14px;border-radius:8px;background:var(--brand);color:var(--on-brand);font:inherit;font-weight:600;text-decoration:none;transition:top .15s var(--ease)}.skip-link:focus,.skip-link:focus-visible{top:8px;outline:2px solid var(--brand-2);outline-offset:2px}:focus-visible{outline:2px solid color-mix(in oklab,var(--brand-2) 80%,transparent);outline-offset:2px;border-radius:4px}.choices li:focus-visible,.cert-card:focus-visible,.lesson-link:focus-visible,.phase-card:focus-visible{outline-offset:3px}.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}:root[data-font=dyslexic]{--font-sans: "OpenDyslexic", "Comic Sans MS", system-ui, sans-serif}.pomo-badge{position:relative;display:inline-flex;align-items:center;gap:8px;min-width:92px;padding:6px 12px;border-radius:999px;background:var(--panel2);color:var(--text);font-variant-numeric:tabular-nums;font-size:13px;border:1px solid var(--border);overflow:hidden}.pomo-badge .pomo-dot{width:8px;height:8px;border-radius:50%;background:var(--muted);flex-shrink:0}.pomo-badge.active .pomo-dot{background:var(--brand);box-shadow:0 0 color-mix(in oklab,var(--brand) 50%,transparent);animation:pulseRing 1.6s ease-out infinite}.pomo-badge.paused .pomo-dot{background:var(--warn);animation:none}.pomo-badge.active:before{content:"";position:absolute;inset:0;border-radius:inherit;background:linear-gradient(90deg,color-mix(in oklab,var(--brand) 22%,transparent) 0,color-mix(in oklab,var(--brand) 22%,transparent) var(--pomo-pct, 0%),transparent var(--pomo-pct, 0%));pointer-events:none}.pomo-badge.pulse{animation:pulseRing .6s ease-out 2}.pomo-badge .pomo-time{position:relative;z-index:1}.pomo-panel-backdrop{position:fixed;inset:0;z-index:60;background:#0000008c;backdrop-filter:blur(2px);display:flex;align-items:flex-start;justify-content:center;padding:60px 16px 16px;animation:fadeIn .15s ease both}.pomo-panel{background:var(--panel);border:1px solid var(--border);border-radius:16px;width:min(420px,100%);max-height:calc(100vh - 80px);overflow:auto;padding:20px;box-shadow:var(--shadow);animation:fadeUp .2s ease both}.pomo-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.pomo-head h3{margin:0;font-size:17px}.pomo-display{display:flex;justify-content:center;padding:18px 0 14px}.pomo-ring{--size: 200px;--thick: 8px;width:var(--size);height:var(--size);border-radius:50%;background:conic-gradient(var(--brand) var(--pomo-pct, 0%),color-mix(in oklab,var(--border) 70%,transparent) 0);display:flex;align-items:center;justify-content:center;position:relative;transition:background .25s linear}.pomo-ring:before{content:"";position:absolute;inset:var(--thick);background:var(--panel);border-radius:50%}.pomo-display.paused .pomo-ring{background:conic-gradient(var(--warn) var(--pomo-pct, 0%),color-mix(in oklab,var(--border) 70%,transparent) 0)}.pomo-time-big{position:relative;z-index:1;font-variant-numeric:tabular-nums;font-size:42px;font-weight:700;letter-spacing:-.02em;color:var(--text)}.pomo-label-line{position:relative;z-index:1;margin-top:4px;max-width:160px;text-align:center;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.pomo-form{display:grid;gap:12px;margin-top:10px}.pomo-input-row{gap:10px;align-items:center;margin:0;flex-wrap:wrap}.pomo-input-row>label{font-weight:500;min-width:56px}.pomo-input-row input[type=number]{width:88px;text-align:center;font-variant-numeric:tabular-nums;font-size:16px;font-weight:600}.pomo-input-row input[type=text]{flex:1;min-width:140px}.pomo-quick{gap:6px;flex-wrap:wrap;margin:0}.pomo-quick-btn{padding:5px 12px;font-size:12.5px;border-radius:999px;font-weight:500}.pomo-actions{gap:10px;justify-content:center;margin-top:6px}.pomo-actions .primary{padding:12px 28px;font-size:14.5px}.pomo-section{margin-top:16px}.pomo-section-title{font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}.pomo-presets{display:grid;gap:6px}.pomo-preset{display:flex;gap:6px;align-items:center}.pomo-preset-run{flex:1;display:flex;justify-content:space-between;align-items:center;background:var(--panel2);border:1px solid var(--border);border-radius:10px;padding:8px 12px;cursor:pointer;color:var(--text)}.pomo-preset-run:hover{border-color:color-mix(in oklab,var(--brand-2) 50%,var(--border))}.pomo-preset-time{font-variant-numeric:tabular-nums;font-weight:600}.pomo-preset-label{color:var(--muted);font-size:13px}.pomo-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.pomo-stat{background:var(--panel2);border:1px solid var(--border);border-radius:10px;padding:10px;text-align:center}.pomo-stat .n{font-size:20px;font-weight:700}.pomo-stat .t{color:var(--muted);font-size:11.5px;margin-top:2px}.pomo-settings{margin-top:16px}.pomo-settings summary{cursor:pointer;padding:4px 0}.pomo-settings-body{display:grid;gap:8px;padding-top:8px}@media (max-width: 480px){.pomo-badge{min-width:0;padding:6px 10px}.pomo-badge .pomo-time{display:none}.pomo-badge.active .pomo-time{display:inline}.pomo-ring{--size: 168px;--thick: 7px}.pomo-time-big{font-size:36px}}.dashboard-grid{display:grid;grid-template-columns:1.4fr 1fr 1.4fr;gap:14px;margin-bottom:20px}.dashboard-grid>.card{margin:0}.dashboard-grid>.weak-card{grid-column:1 / -1}@media (max-width: 1000px){.dashboard-grid{grid-template-columns:repeat(2,1fr)}.dashboard-grid>.continue-card{grid-column:1 / -1}}@media (max-width: 640px){.dashboard-grid{grid-template-columns:1fr}.dashboard-grid>.weak-card{grid-column:auto}}.daily-card{display:flex;flex-direction:column;gap:14px}.daily-head{display:flex;align-items:center;justify-content:space-between}.small-btn{padding:4px 10px;font-size:12px}.daily-rings{display:flex;gap:22px;justify-content:space-around;padding:8px 0 4px}.daily-ring{--pct: 0%;--color: var(--brand);width:110px;height:110px;border-radius:50%;background:conic-gradient(var(--color) var(--pct),var(--panel2) 0);display:flex;align-items:center;justify-content:center;position:relative;transition:background .3s var(--ease)}.daily-ring:before{content:"";position:absolute;inset:9px;background:var(--panel);border-radius:50%}.daily-ring-text{position:relative;z-index:1;text-align:center}.daily-ring-text .big{font-size:22px;font-weight:700;line-height:1;font-variant-numeric:tabular-nums;color:var(--text)}.daily-ring-text .lbl{font-size:10.5px;color:var(--muted);margin-top:4px}.daily-done{text-align:center;padding:8px;background:color-mix(in oklab,var(--ok) 14%,transparent);color:var(--ok);border-radius:var(--radius-sm);font-size:12px;font-weight:600;border:1px solid color-mix(in oklab,var(--ok) 30%,var(--border))}.streak-card{display:flex;flex-direction:column;gap:8px;align-items:center;justify-content:center}.streak-num{font-size:56px;font-weight:800;line-height:1;letter-spacing:-.04em;font-variant-numeric:tabular-nums;background:linear-gradient(135deg,var(--warn),var(--bad));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;display:inline-flex;align-items:center;gap:8px}.streak-fire{font-size:26px;-webkit-text-fill-color:initial}.streak-label{color:var(--muted);font-size:12.5px;text-transform:uppercase;letter-spacing:.04em;font-weight:500}.streak-row{display:flex;gap:4px;margin-top:8px}.streak-day{width:12px;height:12px;border-radius:3px;background:var(--panel2);border:1px solid var(--border)}.streak-day.met{background:linear-gradient(135deg,var(--brand),var(--brand-2));border-color:transparent}.continue-card{display:flex;flex-direction:column;gap:10px}.continue-btn{width:100%;text-align:left;padding:14px 16px;background:var(--panel2);border:1px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;transition:border-color .15s var(--ease),transform .12s var(--ease),background .15s var(--ease);display:flex;flex-direction:column;gap:4px}.continue-btn:hover{border-color:var(--brand);transform:translate(2px);background:color-mix(in oklab,var(--brand) 6%,var(--panel2))}.continue-label{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.04em;font-weight:500}.continue-text{font-size:14px;font-weight:600;line-height:1.4}.weak-card .topic-bar-row.clickable{cursor:pointer;padding:6px 0;transition:transform .12s var(--ease);background:transparent;border:0;width:100%;text-align:left}.weak-card .topic-bar-row.clickable:hover{transform:translate(2px)}.weak-card .topic-bar-row.clickable:hover .topic-bar-label{color:var(--brand)}.topic-bar-track>span.warn{background:linear-gradient(90deg,var(--warn),color-mix(in oklab,var(--warn) 70%,var(--bad)))}.goal-form{display:grid;gap:12px;margin-bottom:16px}.goal-form label{display:flex;flex-direction:column;gap:6px}.goal-form input{font-size:16px;font-weight:600}.cert-progress{margin-top:10px;display:flex;align-items:center;gap:8px;font-size:11.5px;color:var(--muted)}.cert-progress .bar{flex:1;height:4px;background:var(--bg);border-radius:999px;overflow:hidden;border:1px solid var(--border)}.cert-progress .bar>span{display:block;height:100%;background:linear-gradient(90deg,var(--cert-color, var(--brand)),color-mix(in oklab,var(--cert-color, var(--brand)) 70%,var(--brand-2)));transition:width .4s var(--ease)}.cert-progress .pct{font-variant-numeric:tabular-nums;min-width:32px;text-align:right}.lessons-progress-wrap{position:sticky;top:0;z-index:1;background:var(--panel2);padding:8px 12px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:10px}.lessons-progress-bar{flex:1;height:4px;background:var(--bg);border-radius:999px;overflow:hidden;border:1px solid var(--border)}.lessons-progress-bar>span{display:block;height:100%;background:linear-gradient(90deg,var(--brand),var(--brand-2));transition:width .3s ease}.lessons-progress-text{font-size:11.5px;color:var(--muted);font-variant-numeric:tabular-nums}.lesson-link{display:flex;align-items:center;gap:8px}.lesson-link .check{display:inline-block;width:14px;height:14px;border-radius:50%;border:1.5px solid var(--border);flex-shrink:0;position:relative;transition:background .15s,border-color .15s}.lesson-link.read .check{background:var(--brand);border-color:var(--brand)}.lesson-link.read .check:after{content:"";position:absolute;left:3px;top:0;width:4px;height:8px;border:solid #062012;border-width:0 1.6px 1.6px 0;transform:rotate(45deg)}.lesson-link.read{color:var(--muted)}.lesson-link .ttr{margin-left:auto;font-size:11px;color:var(--muted)}.lesson-meta{display:flex;gap:12px;align-items:center;margin:4px 0 18px;font-size:12px;color:var(--muted);font-weight:500}.lesson-meta .dot{opacity:.5}.lesson-actions{margin-top:22px;padding-top:16px;border-top:1px solid var(--border);display:flex;gap:10px;flex-wrap:wrap}.read-toggle{display:inline-flex;align-items:center;gap:6px}.read-toggle.done{color:var(--brand);border-color:color-mix(in oklab,var(--brand) 40%,var(--border));background:color-mix(in oklab,var(--brand) 8%,transparent)}.lesson-search-wrap{padding:12px 14px;border-bottom:1px solid var(--border)}.lesson-search-wrap input{width:100%;background:var(--panel);border:1px solid var(--border);border-radius:9px;padding:8px 12px;font-size:13px}.lesson-toc{background:color-mix(in oklab,var(--panel2) 50%,transparent);border:1px solid var(--border);border-radius:var(--radius);padding:12px 16px;margin:4px 0 24px}.lesson-toc:before{content:"Mundarija";display:block;font-size:10.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}.lesson-toc ul{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));column-gap:18px;row-gap:1px}.lesson-toc li{margin:0}.lesson-toc a{display:block;padding:3px 0;color:var(--text-2);font-size:13px;line-height:1.45;text-decoration:none;transition:color .15s var(--ease),padding .15s var(--ease);position:relative;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.lesson-toc a:hover{color:var(--brand);padding-left:6px}.lesson-toc li.toc-3 a{padding-left:12px;font-size:12.5px;color:var(--muted)}.lesson-toc li.toc-3 a:hover{padding-left:18px}.quick-quiz-cta{margin:26px 0 0;padding:18px 22px;border-radius:var(--radius);background:linear-gradient(135deg,color-mix(in oklab,var(--brand) 14%,var(--panel2)),color-mix(in oklab,var(--brand-2) 14%,var(--panel2)));border:1px solid color-mix(in oklab,var(--brand) 30%,var(--border));display:flex;gap:16px;align-items:center;justify-content:space-between;flex-wrap:wrap}.quick-quiz-title{font-weight:600;font-size:14.5px}.lesson-nav{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:28px}.lesson-nav-btn{text-align:left;padding:14px 16px;font-size:13px;line-height:1.4;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.lesson-nav-btn.disabled{opacity:.35;cursor:not-allowed}.lesson-nav-btn:last-child{text-align:right}@media (max-width: 600px){.lesson-nav{grid-template-columns:1fr}}.lesson-read-progress{position:fixed;left:0;top:0;height:3px;width:0%;background:linear-gradient(90deg,var(--brand),var(--brand-2));transition:width .12s linear;z-index:50}.kbd-hint{margin-top:14px;font-size:11.5px;color:var(--muted);letter-spacing:.01em;padding-top:12px;border-top:1px dashed var(--border);font-family:var(--font-mono)}.kbd-hint kbd,.kbd-hint code{display:inline-block;padding:1px 6px;border:1px solid var(--border-2);border-bottom-width:2px;border-radius:4px;background:var(--panel2);color:var(--text);font-size:11px;font-family:var(--font-mono);margin:0 1px}.streak-badge{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border-radius:999px;background:color-mix(in oklab,var(--warn) 18%,transparent);color:var(--warn);font-size:12px;font-weight:600;border:1px solid color-mix(in oklab,var(--warn) 35%,var(--border));animation:fadeUp .25s var(--ease) both}.quiz-config{display:grid;grid-template-columns:1fr;gap:14px;margin-top:18px}.config-row{display:flex;flex-direction:column;gap:8px}.config-row>label{font-weight:500}.chip-picker{display:flex;flex-wrap:wrap;gap:6px;overflow-x:auto;-webkit-overflow-scrolling:touch;padding-bottom:2px}.chip-picker .chip{display:inline-flex;align-items:center;gap:6px;min-height:36px;padding:7px 14px;border:1px solid var(--border);background:var(--panel2);color:var(--text-2);border-radius:999px;font-size:13.5px;font-weight:500;cursor:pointer;white-space:nowrap;transition:background .15s ease,border-color .15s ease,color .15s ease,transform .15s ease;-webkit-tap-highlight-color:transparent}.chip-picker .chip:hover{border-color:color-mix(in oklab,var(--accent) 40%,var(--border));color:var(--text)}.chip-picker .chip.selected,.chip-picker .chip[aria-checked=true]{background:color-mix(in oklab,var(--accent) 18%,var(--panel2));border-color:color-mix(in oklab,var(--accent) 55%,var(--border));color:var(--text);box-shadow:0 0 0 1px color-mix(in oklab,var(--accent) 35%,transparent) inset}.chip-picker .chip:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.chip-picker .chip:active{transform:scale(.97)}.chip-picker .chip-hint{opacity:.7;font-weight:400;font-size:12px;border-left:1px solid color-mix(in oklab,var(--border) 60%,transparent);padding-left:8px;margin-left:2px}.chip-picker-compact .chip{min-height:30px;padding:5px 11px;font-size:12.5px}@media (max-width: 520px){.chip-picker{flex-wrap:nowrap;padding-bottom:6px}.chip-picker .chip{min-height:40px}}@media (prefers-reduced-motion: reduce){.chip-picker .chip{transition:none}.chip-picker .chip:active{transform:none}}.q-counter{font-weight:600;color:var(--text);font-variant-numeric:tabular-nums}.exam-timer{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:10px;background:var(--panel2);border:1px solid var(--border);font-family:var(--font-mono);font-weight:600;font-size:13px;font-variant-numeric:tabular-nums;color:var(--text-2)}.exam-timer.warn{color:var(--bad);border-color:color-mix(in oklab,var(--bad) 40%,var(--border));background:color-mix(in oklab,var(--bad) 10%,var(--panel2));animation:pulseRing 1.2s ease-out infinite}.exam-timer-icon{opacity:.8}#mark-btn.marked{color:var(--warn);border-color:color-mix(in oklab,var(--warn) 40%,var(--border));background:color-mix(in oklab,var(--warn) 12%,transparent)}.choices li.marked{border-color:color-mix(in oklab,var(--warn) 40%,var(--border))}.pill.multi{background:color-mix(in oklab,var(--info) 12%,transparent);color:var(--info);border-color:color-mix(in oklab,var(--info) 30%,var(--border))}.explanation{margin-top:10px;white-space:pre-wrap;font-family:var(--font-sans);font-size:14.5px;line-height:1.7;color:var(--text);padding-top:10px;border-top:1px dashed var(--border)}.overview-legend{display:flex;gap:16px;flex-wrap:wrap;font-size:12px;color:var(--muted);margin-bottom:14px}.ov-l{display:inline-block;width:14px;height:14px;border-radius:4px;margin-right:6px;vertical-align:middle;border:1px solid var(--border)}.ov-l-answered{background:color-mix(in oklab,var(--ok) 35%,var(--panel2));border-color:color-mix(in oklab,var(--ok) 50%,var(--border))}.ov-l-marked{background:color-mix(in oklab,var(--warn) 35%,var(--panel2));border-color:color-mix(in oklab,var(--warn) 50%,var(--border))}.ov-l-blank{background:var(--panel2)}.overview-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(44px,1fr));gap:8px}.ov-cell{aspect-ratio:1;display:inline-flex;align-items:center;justify-content:center;background:var(--panel2);border:1px solid var(--border);border-radius:8px;cursor:pointer;font-family:var(--font-mono);font-weight:600;font-size:12.5px;font-variant-numeric:tabular-nums;color:var(--text);transition:transform .12s var(--ease),background .15s var(--ease),border-color .15s var(--ease)}.ov-cell:hover{transform:scale(1.06);border-color:var(--brand)}.ov-cell.answered{background:color-mix(in oklab,var(--ok) 24%,var(--panel2));border-color:color-mix(in oklab,var(--ok) 50%,var(--border))}.ov-cell.marked{background:color-mix(in oklab,var(--warn) 24%,var(--panel2));border-color:color-mix(in oklab,var(--warn) 50%,var(--border))}.ov-cell.current{box-shadow:0 0 0 2px var(--brand)}.result-head{display:flex;align-items:center;gap:22px;margin-bottom:18px}.result-pct .result-ring{--pct: 0%;width:110px;height:110px;border-radius:50%;background:conic-gradient(var(--brand) var(--pct),var(--panel2) 0);display:flex;align-items:center;justify-content:center;position:relative}.result-pct.good .result-ring{background:conic-gradient(var(--ok) var(--pct),var(--panel2) 0)}.result-pct.mid .result-ring{background:conic-gradient(var(--warn) var(--pct),var(--panel2) 0)}.result-pct.bad .result-ring{background:conic-gradient(var(--bad) var(--pct),var(--panel2) 0)}.result-pct .result-ring:before{content:"";position:absolute;inset:8px;background:var(--panel);border-radius:50%}.result-ring-text{position:relative;z-index:1;font-size:24px;font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:-.02em}.warn{color:var(--warn)}.topic-bars{display:grid;gap:10px;margin-top:10px}.topic-bar-row{display:grid;grid-template-columns:1fr 2fr 50px;gap:12px;align-items:center}.topic-bar-label{font-size:13px}.topic-bar-track{height:6px;border-radius:999px;background:var(--panel2);overflow:hidden;border:1px solid var(--border)}.topic-bar-track>span{display:block;height:100%;transition:width .4s var(--ease)}.topic-bar-track>span.bad{background:linear-gradient(90deg,var(--bad),color-mix(in oklab,var(--bad) 70%,var(--warn)))}.topic-bar-track>span.ok{background:linear-gradient(90deg,var(--ok),var(--brand))}.topic-bar-pct{font-variant-numeric:tabular-nums;font-size:12px;color:var(--muted);text-align:right}.result-list{padding-left:22px}.result-list li{margin:14px 0}.result-q{font-weight:500;margin-bottom:4px}@media (max-width: 880px){.lab-main{grid-template-columns:1fr}.lessons{grid-template-columns:1fr;min-height:0}.lesson-side{position:static;border-right:0;border-bottom:1px solid var(--border);max-height:320px}.lesson-body{padding:22px 18px 40px}.lesson-article{font-size:16px}.lesson-article h1.lesson-title{font-size:26px}.lesson-article h2{font-size:21px;margin-top:28px}.lesson-article h3{font-size:18px}.lesson-article pre.code{font-size:13px;padding:12px 14px;border-radius:var(--radius-sm)}.hero{padding:28px 24px}}@media (max-width: 720px){.topbar{gap:8px;padding:10px 14px}.tabs{display:none}.controls{margin-left:auto}.controls select{max-width:140px}.bottom-nav{display:flex}body{padding-bottom:76px}select,button,input[type=text],input[type=number]{padding:10px 12px}.choices li{padding:14px;min-height:56px}.choices li .k{min-width:32px;height:32px}main{padding:0 14px;margin:18px auto}.card{padding:18px;border-radius:var(--radius)}.hero{padding:26px 22px;border-radius:var(--radius-lg)}.hero h1{font-size:clamp(24px,7vw,32px)}.hero-cta{gap:8px}.hero-cta button{flex:1 1 auto}}@media (max-width: 480px){.brand .brand-name{display:none}.controls select#lang{max-width:100px}.stats{grid-template-columns:repeat(2,1fr)}.stat .n{font-size:22px}}.md-img{max-width:100%;height:auto;display:block;border-radius:var(--radius);border:1px solid var(--border);background:var(--panel2);margin:14px 0;box-shadow:var(--shadow-sm)}.md-img:hover{box-shadow:var(--shadow);transition:box-shadow .2s var(--ease)}.md-link{color:var(--brand-2);text-decoration:none;border-bottom:1px dashed color-mix(in oklab,var(--brand-2) 40%,transparent);transition:color .15s var(--ease),border-color .15s var(--ease)}.md-link:hover{color:var(--brand-3);border-bottom-color:var(--brand-3);text-decoration:none}.md-link:after{content:"↗";font-size:.85em;margin-left:2px;opacity:.6}.md-svg{display:block;margin:16px 0;padding:18px;background:linear-gradient(135deg,var(--panel2),var(--panel));border:1px solid var(--border);border-radius:var(--radius);text-align:center;overflow-x:auto}.md-svg svg{max-width:100%;height:auto;font-family:var(--font-sans)}.md-svg svg text{fill:var(--text)}.md-svg svg .label{font-size:13px;font-weight:500}.md-svg svg .label-sm{font-size:11px}.md-svg svg .box{fill:color-mix(in oklab,var(--brand) 16%,var(--panel2));stroke:color-mix(in oklab,var(--brand) 50%,var(--border));stroke-width:1.5}.md-svg svg .box-accent{fill:color-mix(in oklab,var(--brand-2) 16%,var(--panel2));stroke:color-mix(in oklab,var(--brand-2) 50%,var(--border));stroke-width:1.5}.md-svg svg .box-warn{fill:color-mix(in oklab,var(--warn) 16%,var(--panel2));stroke:color-mix(in oklab,var(--warn) 50%,var(--border));stroke-width:1.5}.md-svg svg .arrow{stroke:var(--brand);stroke-width:2;fill:none;marker-end:url(#arrowhead)}.hero-meters{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin:18px 0 6px}.hero-meter{display:flex;align-items:center;gap:14px;padding:14px 16px;border-radius:var(--radius);background:color-mix(in oklab,var(--panel2) 70%,transparent);border:1px solid var(--border);cursor:pointer;transition:transform .14s var(--ease-out),border-color .15s var(--ease),background .15s var(--ease);text-align:left;color:inherit}.hero-meter:hover{transform:translateY(-2px);border-color:color-mix(in oklab,var(--brand) 50%,var(--border));background:color-mix(in oklab,var(--panel2) 90%,transparent)}.hero-meter-ring{--pct: 0%;--color: var(--brand);width:56px;height:56px;border-radius:50%;background:conic-gradient(var(--color) var(--pct),color-mix(in oklab,var(--panel3) 80%,transparent) 0);display:grid;place-items:center;position:relative;flex:0 0 auto}.hero-meter-ring:before{content:"";position:absolute;inset:5px;background:var(--panel);border-radius:50%}.hero-meter-num{position:relative;z-index:1;font-weight:800;font-size:13px;font-variant-numeric:tabular-nums;letter-spacing:-.02em}.hero-meter-text{display:flex;flex-direction:column;gap:3px}.hero-meter-lbl{font-weight:600;font-size:14px}.hero-next{margin-top:16px;display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:12px 14px;border-radius:var(--radius);background:color-mix(in oklab,var(--brand) 12%,var(--panel2));border:1px solid color-mix(in oklab,var(--brand) 25%,var(--border))}.next-step-pill{background:var(--brand);color:var(--on-brand);padding:4px 10px;border-radius:999px;font-size:11.5px;font-weight:700;letter-spacing:.04em;text-transform:uppercase}.ai-remote{border-top:1px solid var(--border);padding-top:14px}.ai-remote-output{margin-top:10px;padding:12px 14px;border:1px solid var(--border);border-radius:10px;background:color-mix(in oklab,var(--brand) 4%,transparent);line-height:1.55}.ai-answer{margin:0 0 8px;white-space:pre-wrap}.ai-citations{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}.ai-citation-pill{font-size:11px;padding:2px 8px;border-radius:999px;background:color-mix(in oklab,var(--brand) 14%,transparent);color:var(--brand);border:1px solid color-mix(in oklab,var(--brand) 30%,transparent)}.ai-refusal{margin:0;color:var(--muted);font-style:italic}.ai-thinking{color:var(--muted);font-style:italic;padding:6px 0}.q-trap-btn{margin-left:8px;font-size:11px;padding:2px 10px}.q-trap-output{display:block;flex-basis:100%;width:100%;margin-top:8px}.q-trap-output[hidden]{display:none}.q-trap-panel{border:1px solid var(--border);border-radius:10px;background:color-mix(in oklab,var(--brand) 4%,transparent);padding:10px 12px;line-height:1.5}.q-trap-head{font-weight:600;font-size:13px;color:var(--brand);margin-bottom:6px;display:flex;align-items:center;gap:6px}.q-trap-footer{margin-top:8px;font-size:11px}.question-page{max-width:760px}.question-page-head{margin-bottom:14px}.question-page-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}.question-page-q{font-size:22px;line-height:1.4;margin:8px 0 14px}.question-page-choices{list-style:none;margin:0 0 18px;padding:0;display:flex;flex-direction:column;gap:8px}.question-page-choices li{display:flex;align-items:center;gap:10px;padding:10px 12px;border:1px solid var(--border);border-radius:10px}.question-page-choices li.right{border-color:var(--ok, #2da44e);background:color-mix(in oklab,var(--ok, #2da44e) 10%,transparent)}.question-page-choices .k{display:inline-grid;place-items:center;width:22px;height:22px;border-radius:999px;background:color-mix(in oklab,var(--brand) 12%,transparent);color:var(--brand);font-size:12px;font-weight:600}.q-page-mark{margin-left:auto;display:inline-flex;gap:4px;align-items:center;color:var(--ok, #2da44e)}.question-page-explanation{margin:18px 0;padding:14px 16px;border-left:3px solid var(--brand);background:color-mix(in oklab,var(--brand) 6%,transparent);border-radius:4px}.question-page-explanation h3{margin:0 0 8px;font-size:13px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}.question-page-explanation p{margin:0;line-height:1.6}.question-page-provenance{margin:22px 0;padding:16px;border:1px solid var(--border);border-radius:10px}.question-page-provenance h3{margin:0 0 12px;font-size:13px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}.question-page-prov-list{margin:0;display:grid;grid-template-columns:minmax(120px,160px) 1fr;gap:8px 14px}.question-page-prov-list dt{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}.question-page-prov-list dd{margin:0;font-size:14px;display:flex;flex-wrap:wrap;gap:8px;align-items:center}.question-page-perma{font-family:var(--font-mono, monospace);font-size:12px;background:var(--card-bg, transparent);padding:2px 6px;border-radius:4px;border:1px solid var(--border);word-break:break-all}.question-page-actions{margin-top:8px}@media (max-width: 640px){.question-page-prov-list{grid-template-columns:1fr}}.glossary-card{max-width:920px}.glossary-head h1{margin:8px 0 6px}.glossary-search{display:flex;align-items:center;gap:8px;border:1px solid var(--border);border-radius:10px;padding:8px 12px;margin-top:12px;max-width:420px}.glossary-search input{flex:1;border:none;background:transparent;outline:none;font-size:14px;color:var(--fg)}.glossary-search input::placeholder{color:var(--muted)}.glossary-toc{margin:14px 0 18px;display:flex;flex-wrap:wrap;gap:8px}.glossary-toc a{font-size:12px;text-transform:uppercase;letter-spacing:.04em;padding:4px 10px;border:1px solid var(--border);border-radius:999px;color:var(--muted);text-decoration:none;transition:border-color .12s,color .12s}.glossary-toc a:hover{border-color:var(--brand);color:var(--brand)}.glossary-cluster{margin:20px 0 28px}.glossary-cluster h2{margin-bottom:8px;scroll-margin-top:80px}.glossary-list{margin:0}.glossary-row{display:grid;grid-template-columns:minmax(140px,200px) 1fr;gap:14px;padding:10px 0;border-top:1px solid var(--border)}.glossary-row:first-child{border-top:none}.glossary-row dt{font-weight:600;display:flex;flex-wrap:wrap;align-items:baseline;gap:6px;scroll-margin-top:80px}.glossary-anchor{color:var(--muted);text-decoration:none;font-weight:400;font-size:13px}.glossary-anchor:hover{color:var(--brand)}.glossary-term{font-family:var(--font-mono, monospace);font-size:14px}.glossary-aliases{font-family:var(--font-mono, monospace)}.glossary-row dd{margin:0;font-size:14px;line-height:1.55}.glossary-certs{display:flex;flex-wrap:wrap;gap:4px;margin-top:6px}.glossary-cert-pill{font-size:10px;text-transform:uppercase;letter-spacing:.04em;padding:1px 6px;border-radius:999px;background:color-mix(in oklab,var(--brand) 14%,transparent);color:var(--brand)}@media (max-width: 640px){.glossary-row{grid-template-columns:1fr;gap:4px}}@media (prefers-reduced-motion: reduce){.glossary-toc a{transition:none}}.pretest-card-shell{margin:0 0 18px}.pretest-head h2{margin:6px 0 4px}.pretest-head .next-step-pill{display:inline-block}.pretest-card{margin:14px 0;padding:14px 16px;border:1px solid var(--border);border-radius:12px;background:color-mix(in oklab,var(--card-bg, var(--bg)) 92%,var(--brand) 0%)}.pretest-q{display:flex;gap:8px;align-items:baseline;margin:0 0 10px;font-weight:600}.pretest-num{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;flex-shrink:0}.pretest-choices{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}.pretest-choice{display:flex;align-items:center;gap:10px;padding:8px 12px;border:1px solid var(--border);border-radius:8px;cursor:pointer;transition:background .12s,border-color .12s}.pretest-choice:hover{border-color:var(--brand)}.pretest-choice:focus-visible{outline:2px solid var(--brand);outline-offset:2px}.pretest-choice .k{display:inline-grid;place-items:center;width:22px;height:22px;border-radius:999px;background:color-mix(in oklab,var(--brand) 12%,transparent);color:var(--brand);font-size:12px;font-weight:600}.pretest-choice.right{border-color:var(--ok, #2da44e);background:color-mix(in oklab,var(--ok, #2da44e) 10%,transparent)}.pretest-choice.wrong{border-color:var(--bad, #cf222e);background:color-mix(in oklab,var(--bad, #cf222e) 8%,transparent)}.pretest-feedback{margin-top:10px;font-size:13px;line-height:1.5}.pretest-feedback.hidden{display:none}.pretest-actions{margin-top:16px}@media (prefers-reduced-motion: reduce){.pretest-choice{transition:none}}.confidence-row{display:flex;gap:8px;align-items:center;margin:12px 0;flex-wrap:wrap}.conf-chip{background:transparent;border:1px solid var(--border);border-radius:999px;padding:4px 12px;font-size:12px;cursor:pointer;color:var(--fg);transition:background .12s,border-color .12s}.conf-chip:hover{border-color:var(--brand)}.conf-chip.selected{background:color-mix(in oklab,var(--brand) 15%,transparent);border-color:var(--brand);color:var(--brand)}@media (prefers-reduced-motion: reduce){.conf-chip{transition:none}}.readiness-panel{display:grid;grid-template-columns:auto 1fr;gap:28px;align-items:center;margin:18px 0 8px}.readiness-ring{position:relative;width:168px;height:168px;border-radius:50%;background:conic-gradient(var(--color, var(--brand)) calc(var(--pct, 0%) * 1),color-mix(in oklab,var(--color, var(--brand)) 18%,transparent) 0);display:grid;place-items:center}.readiness-ring:before{content:"";position:absolute;inset:14px;border-radius:50%;background:var(--card-bg, var(--bg))}.readiness-num{position:relative;font-size:44px;font-weight:700;font-variant-numeric:tabular-nums;line-height:1}.readiness-sub{position:relative;margin-top:6px;font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);text-align:center;max-width:130px}.readiness-calib{position:relative;margin-top:4px;font-size:10px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;padding:2px 8px;border-radius:999px;border:1px solid var(--border);color:var(--muted);cursor:help}.readiness-calib.good{border-color:color-mix(in oklab,var(--brand) 50%,transparent);color:var(--brand)}.readiness-action{display:flex;flex-direction:column;gap:8px;align-items:flex-start}.readiness-weak-label{text-transform:uppercase;letter-spacing:.06em;font-size:11px}.readiness-weak-name{font-size:19px;font-weight:600;margin-bottom:4px}.readiness-action .big-cta{font-size:14px;padding:10px 18px;display:inline-flex;gap:8px;align-items:center}.readiness-lift{margin-top:4px;max-width:36em;line-height:1.45}.hero-cta.secondary{margin-top:12px}.hero-cta.secondary .ghost{font-size:12px;padding:6px 12px}@media (max-width: 640px){.readiness-panel{grid-template-columns:1fr;text-align:center;gap:18px}.readiness-ring{margin:0 auto}.readiness-action{align-items:center}.readiness-action .big-cta{align-self:stretch;justify-content:center}}.phase-strip-card{padding:22px 22px 18px}.phase-strip-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px;flex-wrap:wrap}.phase-strip{display:grid;gap:10px;grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}.phase-strip-item{text-align:left;padding:14px 14px 12px;border-radius:var(--radius);background:var(--panel2);border:1px solid var(--border);cursor:pointer;position:relative;display:flex;flex-direction:column;gap:6px;transition:transform .15s var(--ease-out),border-color .15s var(--ease),background .15s var(--ease)}.phase-strip-item:hover{transform:translateY(-2px);border-color:color-mix(in oklab,var(--brand) 50%,var(--border))}.phase-strip-item.done{border-color:color-mix(in oklab,var(--ok) 50%,var(--border));background:color-mix(in oklab,var(--ok) 8%,var(--panel2))}.phase-strip-item.locked{opacity:.6;cursor:default}.phase-strip-item.locked:hover{transform:none}.phase-strip-num{width:28px;height:28px;display:grid;place-items:center;border-radius:50%;background:color-mix(in oklab,var(--brand) 18%,var(--panel3));color:var(--text);font-weight:700;font-size:13px}.phase-strip-item.done .phase-strip-num{background:var(--ok);color:var(--on-brand)}.phase-strip-name{font-weight:600;font-size:14px}.phase-strip-bar{height:4px;border-radius:999px;background:var(--panel3);overflow:hidden}.phase-strip-bar>span{display:block;height:100%;background:linear-gradient(90deg,var(--brand),var(--brand-2));transition:width .5s var(--ease)}.phase-strip-item.done .phase-strip-bar>span{background:var(--ok)}.phase-strip-pct{font-variant-numeric:tabular-nums}.roadmap-hero{padding:28px 28px 24px}.roadmap-summary{display:grid;grid-template-columns:auto 1fr;gap:22px;align-items:center;margin-top:18px}.ring-big{--pct: 0%;--color: var(--brand);width:130px;height:130px;border-radius:50%;background:conic-gradient(var(--color) var(--pct),color-mix(in oklab,var(--panel3) 80%,transparent) 0);display:grid;place-items:center;position:relative;flex:0 0 auto}.ring-big:before{content:"";position:absolute;inset:8px;background:var(--panel);border-radius:50%}.ring-big-text{position:relative;z-index:1;text-align:center}.ring-big-text .big{font-size:32px;font-weight:800;letter-spacing:-.02em;font-variant-numeric:tabular-nums}.ready-pill{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;background:linear-gradient(135deg,var(--ok),var(--brand));color:var(--on-brand);font-weight:800;letter-spacing:.04em;font-size:13px;margin-bottom:8px}.ready-pill>span:first-child{background:#ffffff40;width:22px;height:22px;border-radius:50%;display:grid;place-items:center;font-size:14px}.big.primary,button.primary.big{padding:12px 20px;font-size:15px}.roadmap-timeline{display:flex;flex-direction:column;gap:14px;margin:22px 0}.phase-card{--phase-color: var(--brand);display:grid;grid-template-columns:56px 1fr;gap:18px;padding:22px;position:relative}.phase-card:before{content:"";position:absolute;top:0;left:18px;width:56px;height:3px;background:var(--phase-color);border-radius:0 0 3px 3px;transition:background .2s var(--ease)}.phase-card.locked{opacity:.55;filter:grayscale(.6)}.phase-card.done:before{background:var(--ok)}.phase-step{position:relative;display:flex;flex-direction:column;align-items:center}.phase-step-num{width:44px;height:44px;border-radius:50%;background:color-mix(in oklab,var(--phase-color) 22%,var(--panel2));color:var(--text);display:grid;place-items:center;font-weight:800;font-size:17px;border:2px solid var(--phase-color);flex:0 0 auto;z-index:1}.phase-card.done .phase-step-num{background:var(--ok);color:var(--on-brand);border-color:var(--ok)}.phase-step-line{position:absolute;top:44px;bottom:-20px;left:50%;width:2px;transform:translate(-50%);background:linear-gradient(180deg,var(--phase-color),color-mix(in oklab,var(--phase-color) 30%,transparent))}.phase-content{display:flex;flex-direction:column;gap:12px;min-width:0}.phase-head{display:flex;gap:14px;align-items:flex-start;justify-content:space-between;flex-wrap:wrap}.phase-head h2{margin:6px 0 4px;font-size:22px}.phase-tag{display:inline-block;font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;padding:3px 9px;border-radius:999px;background:color-mix(in oklab,var(--phase-color) 22%,transparent);color:var(--phase-color)}.phase-status{flex:0 0 auto}.status-pill{display:inline-block;padding:5px 12px;border-radius:999px;font-weight:700;font-size:12px;border:1px solid var(--border);background:var(--panel2)}.status-pill.ok{background:color-mix(in oklab,var(--ok) 18%,var(--panel2));border-color:color-mix(in oklab,var(--ok) 50%,var(--border));color:var(--ok)}.status-pill.active{background:color-mix(in oklab,var(--brand) 18%,var(--panel2));border-color:color-mix(in oklab,var(--brand) 50%,var(--border));color:var(--brand)}.status-pill.locked{color:var(--muted)}.phase-progress{display:grid;grid-template-columns:1fr auto;align-items:center;gap:12px}.phase-bar{height:8px;border-radius:999px;background:var(--panel3);overflow:hidden;border:1px solid var(--border)}.phase-bar>span{display:block;height:100%;transition:width .5s var(--ease)}.phase-pct{font-variant-numeric:tabular-nums;font-weight:700}.phase-gates{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:8px}.phase-gate{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:var(--radius-sm);background:var(--panel2);border:1px solid var(--border)}.phase-gate.met{background:color-mix(in oklab,var(--ok) 12%,var(--panel2));border-color:color-mix(in oklab,var(--ok) 40%,var(--border))}.gate-icon{display:inline-flex;align-items:center;justify-content:center;color:var(--muted)}.phase-gate.met .gate-icon{color:var(--ok)}.status-pill.locked svg{vertical-align:-2px;margin-right:4px}.gate-text{display:flex;flex-direction:column}.gate-label{font-size:11.5px;color:var(--muted)}.gate-val{font-weight:700;font-variant-numeric:tabular-nums}.phase-topics{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}.topic-chips{display:flex;flex-wrap:wrap;gap:6px}.topic-chip{display:inline-block;padding:4px 10px;border-radius:999px;background:color-mix(in oklab,var(--brand) 12%,var(--panel2));border:1px solid color-mix(in oklab,var(--brand) 25%,var(--border));color:var(--text);font-size:12px;font-weight:600;cursor:pointer;transition:background .12s var(--ease),border-color .12s var(--ease),transform .12s var(--ease)}.topic-chip:hover{background:color-mix(in oklab,var(--brand) 22%,var(--panel2));border-color:var(--brand);transform:translateY(-1px)}.phase-lessons{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:6px}.phase-lesson{display:flex;align-items:center;gap:8px;padding:8px 12px;border-radius:var(--radius-sm);background:transparent;border:1px solid var(--border);text-align:left;cursor:pointer;font-size:13px;color:var(--text);transition:background .12s var(--ease),border-color .12s var(--ease)}.phase-lesson:hover{background:var(--panel2);border-color:color-mix(in oklab,var(--brand) 40%,var(--border))}.phase-lesson.read{background:color-mix(in oklab,var(--ok) 8%,transparent)}.phase-lesson .lesson-icon{width:18px;height:18px;display:inline-grid;place-items:center;border-radius:50%;background:var(--panel3);font-size:10px;font-weight:800}.phase-lesson.read .lesson-icon{background:var(--ok);color:var(--on-brand)}.phase-actions{margin-top:6px}.mock-hero{padding:28px 28px 22px}.mock-badge{background:linear-gradient(135deg,var(--brand),var(--brand-3));color:var(--on-brand)}.mock-hero-grid{display:grid;grid-template-columns:1fr auto;gap:22px;align-items:center}.mock-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:12px}.mock-stat{background:var(--panel2);border:1px solid var(--border);border-radius:var(--radius-sm);padding:12px 14px;text-align:center}.mock-stat-num{font-size:22px;font-weight:800;font-variant-numeric:tabular-nums;letter-spacing:-.02em;color:var(--text)}.mock-stat-lbl{font-size:11.5px;color:var(--muted);margin-top:2px}.lvl-card{width:160px;padding:14px;border-radius:var(--radius);background:linear-gradient(135deg,color-mix(in oklab,var(--brand) 16%,var(--panel2)),var(--panel2));border:1px solid var(--border);text-align:center}.lvl-num{font-size:30px;font-weight:800;letter-spacing:-.02em;background:linear-gradient(135deg,var(--brand),var(--brand-3));-webkit-background-clip:text;background-clip:text;color:transparent}.lvl-card .bar{margin-top:6px;height:5px;border-radius:999px;background:var(--panel3);overflow:hidden}.lvl-card .bar>span{display:block;height:100%;background:linear-gradient(90deg,var(--brand),var(--brand-3))}.mock-cta{gap:12px;margin:18px 0 8px}.mock-rules{display:flex;flex-direction:column;gap:4px}.mock-run{display:flex;flex-direction:column;gap:14px}.mock-bar{position:sticky;top:12px;z-index:10;display:grid;grid-template-columns:1fr auto auto;gap:14px;align-items:center;padding:12px 16px;background:color-mix(in oklab,var(--panel) 92%,transparent);backdrop-filter:blur(10px);border:1px solid var(--border);border-radius:var(--radius)}.mock-clock-wrap{display:flex;align-items:center;gap:10px}.mock-clock-bar{flex:1;height:6px;border-radius:999px;background:var(--panel3);overflow:hidden;border:1px solid var(--border)}.mock-clock-bar>span{display:block;height:100%;background:linear-gradient(90deg,var(--ok),var(--warn) 70%,var(--bad));transition:width 1s linear}.mock-clock{font-family:var(--font-mono);font-size:18px;font-weight:700;font-variant-numeric:tabular-nums;transition:color .15s var(--ease)}.mock-clock.warn{color:var(--warn)}.mock-clock.crit{color:var(--bad);animation:examClockCrit 1s ease-in-out infinite}@keyframes examClockCrit{0%,to{transform:scale(1)}50%{transform:scale(1.06)}}@media (prefers-reduced-motion: reduce){.mock-clock.crit{animation:none}}.mock-progress{display:flex;align-items:baseline;gap:6px;font-weight:600}.mock-card{padding:26px 28px}.mock-q-meta{margin-bottom:8px;text-transform:uppercase;letter-spacing:.08em;font-weight:700;font-size:11.5px;color:var(--brand)}.mock-question{font-size:21px;font-weight:600;line-height:1.5;margin-bottom:22px;color:var(--text);letter-spacing:-.005em}.mock-choices{display:grid;gap:10px}.mock-choice{display:grid;grid-template-columns:auto auto 1fr;gap:14px;align-items:center;padding:14px 18px;border-radius:var(--radius);border:1px solid var(--border);background:var(--panel2);cursor:pointer;transition:border-color .12s var(--ease),background .12s var(--ease),transform .12s var(--ease);font-size:15px;line-height:1.55;color:var(--text)}.mock-choice:hover{border-color:color-mix(in oklab,var(--brand) 50%,var(--border));background:color-mix(in oklab,var(--brand) 6%,var(--panel2))}.mock-choice.selected{border-color:var(--brand);background:color-mix(in oklab,var(--brand) 16%,var(--panel2))}.mock-choice input{accent-color:var(--brand);width:18px;height:18px}.mock-choice-letter{width:28px;height:28px;border-radius:50%;background:var(--panel3);display:grid;place-items:center;font-weight:800;font-size:13px}.mock-choice.selected .mock-choice-letter{background:var(--brand);color:var(--on-brand)}.mock-choice-text{font-size:15px;line-height:1.55}.mock-nav{display:grid;grid-template-columns:auto 1fr auto;gap:12px;align-items:center}.mock-grid{display:flex;flex-wrap:wrap;gap:6px;justify-content:center}.mock-grid-dot{width:32px;height:32px;border-radius:8px;background:var(--panel2);border:1px solid var(--border);display:grid;place-items:center;font-family:var(--font-mono);font-size:12px;font-weight:700;cursor:pointer;color:var(--text);transition:transform .12s var(--ease)}.mock-grid-dot:hover{transform:scale(1.08)}.mock-grid-dot.answered{background:color-mix(in oklab,var(--ok) 24%,var(--panel2));border-color:color-mix(in oklab,var(--ok) 50%,var(--border))}.mock-grid-dot.marked{background:color-mix(in oklab,var(--warn) 24%,var(--panel2));border-color:color-mix(in oklab,var(--warn) 50%,var(--border))}.mock-grid-dot.active{box-shadow:0 0 0 2px var(--brand)}.mock-result{display:flex;flex-direction:column;gap:14px}.mock-result-head{display:grid;grid-template-columns:auto 1fr;gap:22px;align-items:center;padding:28px}.mock-result-head{position:relative}.mock-result-head.passed:before,.mock-result-head.failed:before{content:"";position:absolute;inset:0 0 auto;height:3px;border-radius:var(--radius) var(--radius) 0 0}.mock-result-head.passed:before{background:var(--ok)}.mock-result-head.failed:before{background:var(--bad)}.mock-result-grade{text-align:center;padding:18px 22px;border-radius:var(--radius);background:color-mix(in oklab,var(--panel2) 80%,transparent)}.mock-result-head.passed .mock-result-grade{background:color-mix(in oklab,var(--ok) 14%,var(--panel2))}.mock-result-head.failed .mock-result-grade{background:color-mix(in oklab,var(--bad) 14%,var(--panel2))}.grade-pct{font-size:56px;font-weight:800;letter-spacing:-.02em;font-variant-numeric:tabular-nums;line-height:1}.grade-fraction{color:var(--muted);margin-top:4px}.mock-result-title h1{margin:0 0 4px;font-size:28px}.mock-review-list{padding-left:0;list-style:none;counter-reset:rev}.mock-review-list li{padding:14px 16px;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--panel2);margin:8px 0}.mock-review-list li.ok{background:color-mix(in oklab,var(--ok) 6%,var(--panel2));border-color:color-mix(in oklab,var(--ok) 25%,var(--border))}.mock-review-list li.bad{background:color-mix(in oklab,var(--bad) 6%,var(--panel2));border-color:color-mix(in oklab,var(--bad) 25%,var(--border))}.mock-review-q{font-weight:600;margin-bottom:4px}.mock-review-meta{font-family:var(--font-mono)}.mock-review-exp{margin-top:8px}.mock-review-exp summary{cursor:pointer;color:var(--brand-2)}.mock-review-exp>div{padding:8px 0 0;color:var(--text-2)}.mock-empty{padding:40px;text-align:center}.mock-history{display:grid;gap:8px}.mock-history-row{display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:center;padding:12px 14px;border-radius:var(--radius-sm);background:var(--panel2);border:1px solid var(--border)}.mock-history-row.ok{background:color-mix(in oklab,var(--ok) 6%,var(--panel2));border-color:color-mix(in oklab,var(--ok) 25%,var(--border))}.mock-history-row.bad{background:color-mix(in oklab,var(--bad) 6%,var(--panel2));border-color:color-mix(in oklab,var(--bad) 25%,var(--border))}.mock-h-pct{font-variant-numeric:tabular-nums;font-weight:800;font-size:22px;min-width:60px}.modal-wide{max-width:720px}.modal-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.lvl-banner{display:grid;grid-template-columns:auto 1fr;gap:18px;align-items:center;padding:16px 18px;border-radius:var(--radius);background:linear-gradient(135deg,color-mix(in oklab,var(--brand) 18%,var(--panel2)),var(--panel2));border:1px solid var(--border);margin-bottom:6px}.lvl-circle{width:64px;height:64px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-3));color:var(--on-brand);display:grid;place-items:center;font-size:22px;font-weight:800;letter-spacing:-.02em;box-shadow:var(--shadow-glow)}.lvl-meta{display:flex;flex-direction:column;gap:6px}.lvl-bar{height:8px;border-radius:999px;background:var(--panel3);overflow:hidden;border:1px solid var(--border)}.lvl-bar>span{display:block;height:100%;background:linear-gradient(90deg,var(--brand),var(--brand-3));transition:width .4s var(--ease)}.badges-grid{display:grid;gap:10px;grid-template-columns:repeat(auto-fill,minmax(140px,1fr))}.badge-card{text-align:center;padding:14px 12px;border-radius:var(--radius);background:var(--panel2);border:1px solid var(--border);position:relative;overflow:hidden}.badge-card.earned{background:linear-gradient(135deg,color-mix(in oklab,var(--brand-2) 18%,var(--panel2)),var(--panel2));border-color:color-mix(in oklab,var(--brand-2) 40%,var(--border))}.badge-card.locked{opacity:.55;filter:grayscale(.7)}.badge-card.locked:after{content:"🔒";position:absolute;top:6px;right:8px;font-size:12px;opacity:.7}.badge-icon{font-size:32px;line-height:1;margin-bottom:6px}.badge-name{font-weight:700;font-size:13px;margin-bottom:4px}.badge-desc{font-size:11.5px;line-height:1.4}@media (max-width: 720px){.roadmap-summary{grid-template-columns:1fr}.ring-big{margin:0 auto}.mock-stats{grid-template-columns:repeat(2,1fr)}.mock-hero-grid{grid-template-columns:1fr}.lvl-card{width:100%}.mock-bar{grid-template-columns:1fr 1fr;padding:10px 12px}.mock-bar .row{grid-column:1 / -1;justify-content:space-between}.mock-nav{grid-template-columns:1fr 1fr}.mock-grid{grid-column:1 / -1}.phase-card{grid-template-columns:1fr;gap:12px;padding:18px}.phase-step{flex-direction:row;gap:10px}.phase-step-line{display:none}.hero-meters{grid-template-columns:1fr}.phase-strip{grid-template-columns:repeat(2,1fr);gap:10px}.phase-gates{grid-template-columns:1fr;gap:8px}}.tut-progress{display:flex;flex-direction:column;gap:6px;margin-top:12px;max-width:560px}.tut-progress-bar{height:8px;background:var(--panel3);border-radius:999px;overflow:hidden}.tut-progress-bar>span{display:block;height:100%;background:linear-gradient(90deg,var(--brand),var(--accent));transition:width .35s var(--ease)}.tut-progress-text{font-variant-numeric:tabular-nums}.tut-rec-card{grid-column:1 / -1}.tut-rec-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:10px}.tut-rec-item{display:flex;flex-direction:column;gap:6px;text-align:left;padding:12px 14px;background:var(--panel2);border:1px solid var(--border);border-radius:var(--radius);cursor:pointer;transition:transform .15s var(--ease),border-color .15s ease,box-shadow .15s ease}.tut-rec-item:hover{transform:translateY(-2px);border-color:color-mix(in oklab,var(--brand) 40%,var(--border));box-shadow:var(--shadow-sm)}.tut-rec-topic{text-transform:uppercase;letter-spacing:.06em;font-size:11px}.tut-rec-title{font-weight:700;font-size:14.5px;line-height:1.3}.tut-rec-desc{font-size:12.5px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.empty-state{text-align:center;padding:48px 28px;display:flex;flex-direction:column;align-items:center}.empty-state h2{font-size:18px;font-weight:700;color:var(--text)}.tutorials-controls{display:grid;grid-template-columns:1fr;gap:14px}.tutorials-controls input[type=search]{width:100%;min-height:40px;padding:8px 14px;border:1px solid var(--border-2);border-radius:10px;background:var(--panel2);color:var(--text);font-size:14px}.tutorials-controls input[type=search]:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px color-mix(in oklab,var(--brand) 22%,transparent)}.tutorials-list{display:grid;gap:18px}.tut-topic-group{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius-lg);padding:14px 18px}.tut-topic-group>summary{cursor:pointer;list-style:none}.tut-topic-group>summary::-webkit-details-marker{display:none}.tut-topic-head{display:flex;align-items:center;gap:12px;position:relative;padding-right:24px}.tut-topic-head:after{content:"";position:absolute;right:4px;top:50%;width:8px;height:8px;border-right:1.5px solid var(--muted);border-bottom:1.5px solid var(--muted);transform:translateY(-65%) rotate(45deg);transition:transform .15s var(--ease-out)}.tut-topic-group[open] .tut-topic-head:after{transform:translateY(-35%) rotate(-135deg)}.tut-topic-name{font-weight:700;font-size:16px;letter-spacing:.02em}.tut-topic-count{font-variant-numeric:tabular-nums;background:var(--panel2);padding:2px 8px;border-radius:999px}.tut-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:12px;margin-top:12px}.tut-card{display:flex;flex-direction:column;gap:8px;text-align:left;padding:14px 16px;background:var(--panel2);border:1px solid var(--border);border-radius:var(--radius);cursor:pointer;transition:transform .15s var(--ease),border-color .15s ease,box-shadow .15s ease;-webkit-tap-highlight-color:transparent}.tut-card:hover{border-color:color-mix(in oklab,var(--brand) 40%,var(--border));transform:translateY(-2px);box-shadow:var(--shadow)}.tut-card:focus-visible{outline:2px solid var(--brand);outline-offset:2px}.tut-card.read{border-color:color-mix(in oklab,var(--ok) 35%,var(--border))}.tut-card-head{display:flex;justify-content:space-between;align-items:center;gap:8px}.tut-card-topic{font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);font-weight:600}.tut-card-difficulty{font-size:11px;padding:2px 8px;border-radius:999px;font-weight:600}.tut-diff-beginner{background:color-mix(in oklab,var(--ok) 14%,transparent);color:var(--ok)}.tut-diff-intermediate{background:color-mix(in oklab,var(--warn) 14%,transparent);color:var(--warn)}.tut-diff-advanced{background:color-mix(in oklab,var(--bad) 14%,transparent);color:var(--bad)}.tut-card-title{font-weight:700;font-size:15px;line-height:1.35;color:var(--text)}.tut-card-desc{font-size:13px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.tut-card-meta{display:flex;gap:10px;flex-wrap:wrap;font-size:12px;margin-top:4px}.tut-card-meta-pill{display:inline-flex;align-items:center;gap:4px}.tut-card-read{color:var(--ok);display:inline-flex;align-items:center;gap:4px;font-weight:600}.tut-card-tags{display:flex;flex-wrap:wrap;gap:4px;margin-top:4px}.provenance-card{margin:24px 0 0;padding:12px 14px;border:1px dashed var(--border-2);border-radius:var(--radius);background:color-mix(in oklab,var(--panel2) 60%,transparent);font-size:12.5px}.provenance-head{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--text-2);margin-bottom:8px}.provenance-body{display:grid;grid-template-columns:1fr;gap:4px;color:var(--muted)}.provenance-body>div{display:flex;gap:8px;flex-wrap:wrap}.provenance-key{min-width:110px;color:var(--muted);font-variant-numeric:tabular-nums}.provenance-val{color:var(--text-2);flex:1;word-break:break-word}.lesson-breadcrumb{display:flex;align-items:center;gap:10px;margin-bottom:14px;flex-wrap:wrap}.lesson-breadcrumb-btn{padding:6px 12px}.lesson-breadcrumb-sep{color:var(--muted)}.lesson-breadcrumb-topic{color:var(--muted);font-size:13px;letter-spacing:.04em;text-transform:uppercase}.lesson-meta-pill{display:inline-flex;align-items:center;gap:4px;color:var(--muted)}.lesson-meta-pill svg{opacity:.8}@media (max-width: 720px){.lessons{grid-template-columns:1fr}.lesson-side{position:static;max-height:none;border-right:none;border-bottom:1px solid var(--border);border-radius:var(--radius-lg) var(--radius-lg) 0 0}.lesson-group:not([open]) ul{display:none}}@supports not (color: color-mix(in oklab,red,blue)){:root[data-theme=dark]{--shadow-glow: 0 0 0 1px rgba(129, 140, 248, .35), 0 8px 32px rgba(129, 140, 248, .25);--hero-grad: linear-gradient(135deg, #1a2031, #131826)}:root[data-theme=light]{--shadow-glow: 0 0 0 1px rgba(99, 102, 241, .25), 0 8px 32px rgba(99, 102, 241, .18);--hero-grad: linear-gradient(135deg, #ffffff, #f4f6fb)}.primary{background:var(--brand);color:var(--on-brand)}.ghost:hover{background:var(--panel2)}.chip-picker .chip.selected,.chip-picker .chip[aria-checked=true]{background:var(--panel3);border-color:var(--brand)}.cert-card.active,.career-card-icon,.career-detail-icon,.career-skill{background:var(--panel2)}.topbar{background:var(--panel)}}@media (pointer: coarse){.ghost.icon,button.icon,.primary,.ghost,.tab,.bottom-tab,.lang-chip,.cert-menu-trigger,.chip-picker .chip{min-block-size:44px;min-inline-size:44px}.ghost.icon,button.icon{width:44px;height:44px}.bottom-nav{gap:8px}}body{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}