:root{--ink:#232621;--muted:#60685f;--gold:#efb92f;--pale:#fbf1d4;--paper:#f5f6f2;--line:#dce0d7;--green:#316748;--white:#fff;--red:#9d4939;font-family:-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Yu Gothic",sans-serif;color:var(--ink);background:var(--paper);font-size:16px;line-height:1.7}*{box-sizing:border-box}body{margin:0}button,input,select,textarea{font:inherit}button,a,input,select{transition:background .18s,color .18s,box-shadow .18s,transform .18s}button,a{touch-action:manipulation}button{cursor:pointer}a{color:inherit;text-decoration:none}a:hover{color:#846000}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid var(--gold);outline-offset:3px}button{border:1px solid var(--line);background:white;border-radius:8px;padding:9px 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30px));max-height:90vh;color:var(--ink);background:white}dialog::backdrop{background:#20291db3;backdrop-filter:blur(3px)}.dialog-head{position:sticky;top:0;background:white;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:13px 25px;z-index:2}.dialog-head button{font-size:13px}#article-content{padding:25px 32px 40px;overflow-wrap:anywhere}#article-title{font-size:24px;line-height:1.6}.article-meta{font-size:12px;color:var(--muted);margin-bottom:18px}.article-meta a{color:var(--green);text-decoration:underline}.article-body{font-size:15px;line-height:1.95}.article-body h2{margin-top:25px}.article-body h3{margin-top:22px}.article-body h4{margin-top:20px}.article-body a{color:#3c6949;text-decoration:underline}.article-body img{max-width:100%;height:auto;border-radius:5px}.article-body .table-wrap{overflow:auto;max-width:100%;margin:20px 0}.article-body table{border-collapse:collapse;min-width:100%;font-size:13px}.article-body th,.article-body td{border:1px solid var(--line);padding:8px 12px;min-width:80px}.article-body th{background:var(--paper)}.article-body blockquote{margin-left:0;padding:12px 16px;background:var(--paper);border-left:3px solid var(--line)}.article-body ul,.article-body ol{padding-left:24px}.toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);padding:12px 22px;background:var(--ink);color:#fff;border-radius:9px;z-index:50;font-size:14px;box-shadow:0 7px 25px #0002}.toast[hidden]{display:none}.muted{color:var(--muted)}.back{font-size:13px;margin-bottom:18px}.list-clean{padding-left:20px;font-size:14px}.tipline{font-size:12px;color:var(--muted);margin:8px 0 20px}.stage-strip{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px;margin:20px 0}.stage-strip div{padding:15px 10px;background:var(--paper);border-top:3px solid var(--gold);font-size:13px}.stage-strip strong{display:block;margin-bottom:8px}.stage-strip small{font-size:12px}.hide{display:none!important}
@media(min-width:1500px){.support-grid{grid-template-columns:330px minmax(0,1fr)}}
@media(max-width:1100px){.rail{width:205px;padding:30px 18px}.brand img{width:160px}.workspace{margin-left:205px}main{padding:28px 25px}.topbar{padding:0 25px}.support-grid{grid-template-columns:240px minmax(0,1fr);gap:17px}.panel{padding:23px}.curriculum-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.lesson-layout{grid-template-columns:185px minmax(0,1fr);gap:17px}.flow{gap:11px}.flow-item{padding:17px 12px}.flow-item h3{font-size:16px}.flow-item p{font-size:13px}.sim-fields{gap:9px}.timeline{grid-template-columns:repeat(2,minmax(0,1fr))}.stage-strip{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:820px){.rail{transform:translateX(-100%);transition:transform .23s ease;width:240px;box-shadow:15px 0 40px #0001}.rail.open{transform:translateX(0)}.workspace{margin-left:0}.menu{display:block;padding:6px 11px;margin-right:15px}.topbar{height:72px;padding:0 21px;justify-content:flex-start}.topbar .review-badge{margin-left:auto}.eyebrow{font-size:10px}.support-grid{grid-template-columns:230px minmax(0,1fr)}main{padding:26px 22px}.panel{padding:22px}.lesson-layout{grid-template-columns:1fr}.lesson-menu{grid-template-columns:repeat(3,minmax(0,1fr))}.lesson-menu button{padding:13px}.lesson-menu strong{font-size:13px}footer{padding:12px 22px 25px}.count{display:none}}
@media(max-width:620px){h1{font-size:25px}.intro{margin-bottom:20px}.intro p{font-size:13px}.search-form{padding:13px 15px;gap:8px}.search-form input{font-size:15px}.search-form button{padding:9px 11px;font-size:13px}.support-grid{grid-template-columns:1fr}.case-list-scroll{display:flex;overflow-x:auto;max-height:none;gap:8px;padding-bottom:9px;scroll-snap-type:x proximity}.case-btn{width:225px;min-width:225px;min-height:85px;scroll-snap-align:start}.case-list-title{margin:0}.case-list{gap:5px}.panel{padding:21px 18px}.panel-title{margin-bottom:18px}.panel-title h2{font-size:21px}.section-label{margin-top:21px}.official-box{font-size:14px}.draft-box{padding:14px}.draft-box textarea{font-size:14px;min-height:170px}.lesson-menu{display:flex;overflow-x:auto;padding-bottom:8px}.lesson-menu button{min-width:170px}.lesson-head h2{font-size:23px}.flow{grid-template-columns:1fr;gap:14px}.flow-item{padding:15px 18px;grid-template-rows:auto auto auto}.flow-item .number{margin-bottom:5px}.flow-item h3{font-size:19px;min-height:0}.flow-item:not(:last-child):after{content:'↓';right:22px;top:auto;bottom:-22px}.two-col{grid-template-columns:1fr}.timeline{grid-template-columns:repeat(2,minmax(0,1fr))}.simulator{padding:17px}.sim-fields{grid-template-columns:1fr;gap:13px}.sim-fields label{grid-template-columns:1fr 85px;align-items:center;font-size:13px}.sim-fields input{font-size:20px}.sim-fields .condition{grid-column:1 / -1}.curriculum-grid{grid-template-columns:1fr}.topic-card h2{min-height:0}.faq-row{grid-template-columns:1fr;gap:9px}.faq-row button{justify-self:start}.stat-grid{grid-template-columns:1fr;gap:10px}.stat{display:flex;align-items:center;justify-content:space-between;padding:17px 20px}.stat strong{font-size:28px}.stage-strip{grid-template-columns:1fr}.lesson-complete{align-items:flex-start;flex-direction:column}.lesson-complete button{width:100%}#article-content{padding:22px 18px 30px}#article-title{font-size:21px}.dialog-head{padding:10px 17px}.review-badge{font-size:11px}.topbar{padding:0 18px}.crumb{font-size:12px}main{padding:24px 18px}.quiz-options{display:grid}.info-card h3{min-height:0}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{transition:none!important;scroll-behavior:auto!important}}

.parallel .flow-item:after{display:none}.rail-close{display:none}@media(max-width:820px){.rail-close{display:block;align-self:flex-end;margin-bottom:20px;font-size:12px}}
@media(min-width:621px){.flow-item h3,.info-card h3{min-height:3.2em}}
@media(min-width:821px) and (max-width:1100px){.lesson-layout{grid-template-columns:1fr}.lesson-menu{grid-template-columns:repeat(3,minmax(0,1fr))}.lesson-menu button{padding:13px}.lesson-menu strong{font-size:13px}}