:root{--yellow:#ffc603;--ink:#14171b;--muted:#616772;--line:#e4e7e9;--paper:#fff;--soft:#f5f6f4;--red:#d90708;--radius:20px;--shadow:0 18px 50px rgba(25,33,37,.055)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--paper);color:var(--ink)}button,input,textarea,select{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer}a{color:inherit;text-underline-offset:4px}button:disabled{cursor:default;opacity:.55}[hidden]{display:none!important}.wrap{width:min(1180px,calc(100% - 64px));margin:auto}.header{border-bottom:1px solid var(--line);background:var(--paper)}.header-inner{display:flex;justify-content:space-between;align-items:center;min-height:100px;gap:24px}.brand{display:flex;align-items:center;gap:13px;text-decoration:none;line-height:1.3}.mark{display:grid;place-items:center;background:var(--yellow);border-radius:13px;width:49px;height:49px;font-size:21px;font-weight:850;letter-spacing:-1px}.brand strong{display:block;font-size:20px;letter-spacing:-.5px}.brand small{display:block;color:var(--muted);font-size:11px;margin-top:5px;letter-spacing:.6px}.header nav{display:flex;align-items:center;gap:27px;font-size:14px;font-weight:600}.header nav a{text-decoration:none}.version{background:var(--soft);border:1px solid var(--line);border-radius:6px;padding:3px 9px;font-size:12px;color:var(--muted)}.eyebrow{display:block;font-size:11px;font-weight:750;letter-spacing:1.6px;line-height:1.6;color:var(--muted)}.dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--yellow);margin-right:6px}.hero{display:grid;grid-template-columns:1.25fr 1fr;gap:78px;padding:78px 0 64px;align-items:center}h1,h2,h3,h4,p{margin-top:0}h1{font-size:clamp(34px,4vw,54px);line-height:1.12;letter-spacing:-2px;margin:18px 0 24px;font-weight:780}.hero h1 span{color:#747c82}.lead{font-size:18px;color:var(--muted);line-height:1.75;max-width:640px}.actions{display:flex;align-items:center;flex-wrap:wrap;gap:12px}.button{display:inline-flex;gap:18px;align-items:center;justify-content:center;min-height:48px;padding:11px 20px;border:1px solid var(--yellow);background:var(--yellow);border-radius:10px;font-weight:700;font-size:14px;text-decoration:none;line-height:1.5;transition:transform .15s,box-shadow .15s;color:var(--ink)}.button:hover{transform:translateY(-1px);box-shadow:0 5px 15px #00000010}.button.secondary{background:white;border-color:var(--line)}.button.wide{width:100%;justify-content:space-between}.text-button{border:0;background:none;font-size:13px;color:var(--muted);padding:8px 0;text-align:left;text-decoration:underline;text-underline-offset:4px}.fine{font-size:12px;line-height:1.6;color:var(--muted);margin:16px 0 0}.hero-panel{padding:27px;border:1px solid var(--line);border-radius:var(--radius);background:var(--soft);transform:rotate(1deg)}.hero-panel>.eyebrow{margin:0 0 17px 3px}.architecture-row{background:#fff;border:1px solid var(--line);border-radius:12px;display:flex;align-items:center;gap:17px;padding:19px;margin-top:10px}.architecture-row.selected{border-color:var(--yellow);box-shadow:4px 5px 0 var(--yellow);transform:translateX(-10px)}.architecture-row>b{font-size:12px;color:#92989d}.architecture-row strong{display:block;font-size:17px}.architecture-row small{display:block;color:var(--muted);font-size:12px}.hero-panel>p{font-size:12px;color:var(--muted);margin:22px 3px 0}.stat-strip{display:grid;grid-template-columns:repeat(3,1fr);border-block:1px solid var(--line);padding:24px 0;margin-bottom:8px}.stat-strip>div{display:flex;align-items:center;gap:15px;padding:0 20px;border-left:1px solid var(--line)}.stat-strip>div:last-child{border-left:0}.stat-strip strong{font-size:28px;font-weight:700}.stat-strip span{font-size:13px;color:var(--muted)}.section{padding:55px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:30px;margin-bottom:26px}.section-head h2{font-size:29px;letter-spacing:-.9px;margin:8px 0 0;line-height:1.25}.section-head>p{margin:0;color:var(--muted);font-size:13px}.module-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,330px),1fr));gap:23px}.module-card{border:1px solid var(--line);border-radius:var(--radius);padding:27px;background:var(--paper);max-width:580px;box-shadow:var(--shadow)}.card-meta{display:flex;justify-content:space-between;align-items:center;margin-bottom:25px}.module-number{font-size:24px;color:#a0a5aa;font-weight:650}.pill{display:inline-block;background:#fff6cc;color:#655400;border:1px solid #eee2ae;font-size:11px;border-radius:30px;padding:4px 10px}.module-card h3{font-size:22px;line-height:1.3;letter-spacing:-.5px}.module-card>p{font-size:14px;color:var(--muted)}.module-stats{display:flex;flex-wrap:wrap;gap:8px 22px;color:var(--muted);font-size:12px;margin:16px 0 21px}.module-stats span{display:inline-block}.module-card>.button{margin-top:8px}.roadmap{display:grid;grid-template-columns:1fr 1.2fr;gap:58px;border-top:1px solid var(--line)}.roadmap h2{font-size:27px;line-height:1.3;margin-top:10px;letter-spacing:-.7px}.roadmap p{font-size:14px;color:var(--muted)}.roadmap-list>div{display:grid;grid-template-columns:145px 1fr;gap:20px;border-bottom:1px solid var(--line);padding:20px 0}.roadmap-list>div:first-child{padding-top:0}.roadmap-list strong{font-size:14px}.roadmap-list span{font-size:13px;color:var(--muted)}footer{margin-top:40px;background:var(--soft);border-top:1px solid var(--line)}.footer-grid{display:grid;grid-template-columns:1.15fr 1.1fr .75fr;gap:50px;padding:43px 0}.footer-grid h2{font-size:20px;letter-spacing:-.5px;margin:8px 0 14px}.footer-grid h3{font-size:12px;letter-spacing:1px;text-transform:uppercase;color:var(--muted)}.footer-grid p,.footer-grid address,.footer-grid a,.footer-grid strong{font-size:12px;line-height:1.8;font-style:normal}.footer-grid p{color:var(--muted)}.footer-bottom{border-top:1px solid var(--line);padding:18px 0;color:var(--muted);font-size:11px;display:flex;justify-content:space-between}.module-heading{padding:44px 0 22px;max-width:900px}.back{display:block;font-size:13px;color:var(--muted);margin-bottom:25px;text-decoration:none}.module-heading h1{font-size:36px;line-height:1.2;letter-spacing:-1.2px;margin:12px 0 16px}.module-heading p{max-width:760px;color:var(--muted)}.learning-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;padding:0 0 27px}.learning-stats>div{border:1px solid var(--line);border-radius:14px;padding:20px 22px}.learning-stats strong{display:block;font-size:27px;line-height:1.3;letter-spacing:-.7px}.learning-stats span{display:block;font-size:11px;color:var(--muted);margin-top:8px}.resume{display:flex;justify-content:space-between;align-items:center;background:#fff8dc;border:1px solid #efe4b9;border-radius:14px;padding:20px 24px;margin:2px 0 33px;gap:18px}.resume strong{font-size:16px}.resume p{margin:2px 0 0;font-size:12px;color:var(--muted)}.picker-controls{display:flex;flex-wrap:wrap;gap:20px;margin-bottom:22px}.picker-controls label{font-size:12px;font-weight:650;min-width:220px}.picker-controls select{display:block;width:100%;margin-top:7px}select,input[type=text],textarea{border:1px solid #ccd1d5;border-radius:9px;background:#fff;min-height:45px;padding:10px 13px;color:var(--ink);font-size:15px;max-width:100%}select{padding-right:30px}textarea{width:100%;resize:vertical;line-height:1.65}input[type=text]{width:100%}.mode-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}.mode-card{position:relative;display:flex;flex-direction:column;align-items:start;text-align:left;padding:23px;border:1px solid var(--line);background:#fff;border-radius:16px;min-height:198px;gap:12px}.mode-card strong{font-size:19px;letter-spacing:-.3px}.mode-card>span:not(.eyebrow){font-size:13px;color:var(--muted);max-width:94%;line-height:1.6}.mode-card b{position:absolute;right:22px;top:20px;font-size:20px;font-weight:400}.mode-card.featured{border-color:var(--yellow);background:#fffbeb}.mode-card:hover{border-color:#999;box-shadow:var(--shadow)}.backup{border-block:1px solid var(--line);padding:27px 0;margin:38px 0;display:flex;gap:25px;align-items:center;justify-content:space-between}.backup h3{font-size:17px;margin-bottom:6px}.backup p{font-size:12px;max-width:420px;color:var(--muted);margin:0}.backup .actions{justify-content:flex-end}.backup .button{font-size:12px;padding:9px 13px;min-height:43px}.notice{padding:15px 19px;background:#fff6d7;border:1px solid #ead898;border-radius:10px;font-size:14px;margin:15px 0 25px;overflow-wrap:anywhere}.question-directory{border:1px solid var(--line);border-radius:13px;margin:30px 0}.question-directory>summary{padding:19px;cursor:pointer;font-weight:600;font-size:14px}.question-directory ul{list-style:none;margin:0;padding:0 22px 22px}.question-directory li{border-top:1px solid var(--line);padding:12px 0;font-size:13px}.question-directory a{text-decoration:none}.question-directory a>span{font-size:10px;color:var(--muted);display:block}.run-toolbar{display:flex;justify-content:space-between;align-items:center;margin:0 0 20px;gap:15px}.run-summary{border:1px solid var(--line);border-radius:16px 16px 0 0;padding:21px 25px;display:flex;justify-content:space-between;background:var(--soft);gap:20px}.run-summary strong{display:block;font-size:30px;letter-spacing:-.7px;margin:4px 0}.run-summary small{font-size:12px;color:var(--muted)}.progress{display:block;appearance:none;width:100%;height:5px;border:0;background:var(--line);margin:0 0 24px}.progress::-webkit-progress-bar{background:var(--line)}.progress::-webkit-progress-value{background:var(--yellow)}.progress::-moz-progress-bar{background:var(--yellow)}.question-layout{display:grid;grid-template-columns:minmax(0,1fr) 230px;gap:26px;align-items:start}.question-card{border:1px solid var(--line);border-radius:16px;padding:28px;min-width:0}.question-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:22px}.question-meta>span{color:var(--muted);font-size:11px}.bookmark{border:1px solid var(--line);border-radius:20px;background:#fff;padding:5px 10px;font-size:11px;white-space:nowrap}.bookmark[aria-pressed=true]{background:#fff6cd;border-color:#e4cf6c}.question-card h2{font-size:23px;line-height:1.48;letter-spacing:-.35px;margin-bottom:22px;overflow-wrap:anywhere}.question-card fieldset{border:0;padding:0;margin:0;min-width:0}.question-card fieldset .fine{margin:0 0 15px}.options{display:flex;flex-direction:column;gap:11px}.option{display:flex;align-items:center;gap:13px;border:1px solid var(--line);padding:15px 17px;border-radius:11px;font-size:15px;cursor:pointer;line-height:1.55}.option:has(input:checked){background:#fff9df;border-color:#caaa32}.option input{width:17px;height:17px;accent-color:#8a6b00;flex:0 0 auto}.option:has(input:disabled){cursor:default}.answer-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:25px}.run-side{border:1px solid var(--line);border-radius:14px;padding:20px}.run-side h3{font-size:13px;margin-bottom:17px}.question-nav{display:grid;grid-template-columns:repeat(5,1fr);gap:7px}.question-nav button{padding:0;height:31px;border:1px solid var(--line);background:#fff;border-radius:6px;font-size:12px}.question-nav button.done{background:#e8eeea}.question-nav button.current{background:var(--yellow);border-color:var(--yellow);font-weight:750}.run-side p{font-size:12px;color:var(--muted);margin-top:20px}.run-side a{font-size:12px;display:block;margin-bottom:13px}.run-side .text-button{color:#904135}.timer{font-variant-numeric:tabular-nums;background:var(--ink);color:#fff;padding:5px 13px;border-radius:7px;font-size:18px}.field-label{display:block;font-size:13px;font-weight:600;margin-bottom:10px}.matching{display:flex;flex-direction:column;gap:15px}.matching label{display:grid;grid-template-columns:1fr 1fr;gap:15px;align-items:center;font-size:14px}.matching select{width:100%;font-size:13px}.ordering{list-style:none;padding:0;margin:0}.ordering li{display:flex;align-items:center;gap:13px;padding:11px 12px;border:1px solid var(--line);border-radius:9px;margin:9px 0;font-size:14px}.ordering li>span:nth-child(2){flex:1}.order-index{color:var(--muted);font-size:12px}.ordering li>div{display:flex;gap:5px}.ordering button{border:1px solid var(--line);background:#fff;width:32px;height:33px;border-radius:6px}.selection-note{font-size:13px;padding:9px 13px;background:#f1f3ef;border-radius:7px}.feedback{margin-top:27px;border-top:3px solid #839d87;padding:22px;background:#f2f7f2;border-radius:0 0 9px 9px}.feedback.incorrect{border-color:var(--red);background:#fff5f3}.feedback.self{border-color:var(--yellow);background:#fffbee}.feedback h3{font-size:19px;line-height:1.4;margin:9px 0 13px}.feedback p{font-size:14px}.prewrap{white-space:pre-wrap;overflow-wrap:anywhere}.explanation{border-top:1px solid #00000012;padding-top:15px;margin-top:19px}.explanation>strong{font-size:13px}.explanation p{margin:6px 0 0}.self-rating>span{display:block;font-size:12px;margin:18px 0 10px}.self-rating button{font-size:12px;min-height:40px;padding:8px 12px}.self-rating button[aria-pressed=true]{border-color:#aa8b15;background:var(--yellow)}.question-image{max-width:100%;height:auto;border-radius:12px;margin:5px 0 25px;display:block}.results{padding:20px 0}.results>h2{font-size:32px;letter-spacing:-.9px;line-height:1.3;margin:10px 0 14px}.results>p{color:var(--muted)}.results .learning-stats{margin-top:28px}.results>.actions{margin:0 0 35px}.results>h3{font-size:22px;margin-bottom:20px}.result-list>details{border:1px solid var(--line);border-radius:11px;margin-bottom:12px}.result-list summary{padding:16px;cursor:pointer;display:flex;align-items:start;gap:16px;font-size:14px;list-style:none}.result-list summary:after{content:'+';margin-left:auto;font-size:19px}.result-list details[open] summary:after{content:'−'}.result-list details>div{padding:0 23px 24px}.result-list h4{font-size:12px;margin-bottom:6px}.result-list p,.result-list a{font-size:13px}.result-status{flex:0 0 auto;font-size:10px;border-radius:20px;padding:3px 9px;background:var(--soft);color:var(--muted)}.result-status.ok{background:#e6f0e5;color:#275e30}.result-status.bad{background:#fce5e2;color:#9d2617}.result-status.neutral{background:#fff3ba;color:#645513}.article{max-width:830px;padding:48px 0 35px}.article h1{font-size:37px;letter-spacing:-1px;line-height:1.3}.article h2{font-size:23px;margin-top:30px}.article p,.article li{font-size:15px}.solution{border:1px solid var(--line);border-radius:12px;margin:25px 0;padding:18px}.solution summary{cursor:pointer;font-weight:650}.solution p{margin:18px 0 0}.empty{padding:100px 0}.skip{position:absolute;left:20px;top:-70px;background:var(--ink);color:white;padding:10px;z-index:100}.skip:focus{top:10px}.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}:focus-visible{outline:3px solid #987500;outline-offset:4px}
@media(max-width:1000px){.hero{gap:35px;padding-top:55px}.wrap{width:calc(100% - 44px)}.hero h1{font-size:43px}.header nav{gap:18px}.mode-grid{grid-template-columns:repeat(2,1fr)}.backup{align-items:start;flex-direction:column}.backup .actions{justify-content:start}.question-layout{grid-template-columns:minmax(0,1fr) 190px}.question-card{padding:23px}.footer-grid{gap:28px}.roadmap{gap:25px}.roadmap-list>div{grid-template-columns:115px 1fr}}
@media(max-width:720px){.wrap{width:calc(100% - 32px)}.header-inner{min-height:84px;gap:12px}.brand strong{font-size:17px}.mark{width:42px;height:42px}.brand small{font-size:9px}.header nav a{display:none}.header nav{gap:0}.hero{grid-template-columns:1fr;gap:30px;padding:40px 0 35px}.hero h1{font-size:39px;letter-spacing:-1.5px}.hero .lead{font-size:16px}.hero-panel{transform:none;padding:20px}.architecture-row{padding:14px}.stat-strip{padding:19px 0}.stat-strip>div{flex-direction:column;gap:4px;padding:0 8px;text-align:center}.stat-strip strong{font-size:24px}.stat-strip span{font-size:10px}.section{padding:35px 0}.section-head{display:block}.section-head>p{margin-top:12px}.section-head h2{font-size:27px}.roadmap{grid-template-columns:1fr;gap:16px}.roadmap-list>div{grid-template-columns:110px 1fr;gap:15px}.footer-grid{grid-template-columns:1fr;padding:30px 0;gap:20px}.footer-grid h3{margin-bottom:10px}.footer-bottom{display:block}.footer-bottom>span{display:block;margin-top:7px}.module-heading{padding-top:30px}.module-heading h1{font-size:29px;letter-spacing:-.7px}.module-heading p{font-size:14px}.learning-stats{grid-template-columns:repeat(2,1fr);gap:10px}.learning-stats>div{padding:16px}.learning-stats strong{font-size:24px}.resume{padding:18px;align-items:start;flex-direction:column}.mode-grid{gap:12px}.mode-card{padding:17px;min-height:210px;gap:11px}.mode-card strong{font-size:17px}.mode-card>span:not(.eyebrow){font-size:12px}.mode-card b{right:15px;top:12px}.picker-controls{gap:15px}.picker-controls label{width:100%;min-width:0}.backup .actions{gap:9px}.question-layout{grid-template-columns:1fr;gap:18px}.run-side{order:2}.question-nav{grid-template-columns:repeat(10,1fr)}.run-summary{padding:18px;gap:15px}.run-summary strong{font-size:25px}.run-summary .eyebrow{font-size:9px;letter-spacing:1px}.question-card{padding:19px}.question-card h2{font-size:20px}.question-meta{align-items:start}.question-meta>span{font-size:10px}.option{padding:13px;font-size:14px;gap:11px}.matching label{grid-template-columns:1fr;gap:7px}.ordering li{font-size:12px;gap:8px;padding:10px}.ordering button{width:29px}.run-toolbar{gap:8px;flex-wrap:wrap}.run-toolbar>.text-button{font-size:11px}.run-toolbar .pill{font-size:10px}.answer-actions .button{font-size:13px;width:100%}.feedback{padding:18px}.result-list summary{padding:14px;gap:10px;flex-wrap:wrap}.result-list summary>span:nth-child(2){width:100%}.results>h2{font-size:27px}.article h1{font-size:29px;letter-spacing:-.6px}.article{padding-top:30px}.module-stats{gap:6px 13px}.question-image{margin-bottom:19px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}