:root{--ink:#15373d;--petrol:#124a54;--deep:#0b333b;--paper:#f7f6f0;--white:#fff;--muted:#52666a;--line:#cdd8d6;--accent:#e9ba76;--soft:#e7efec;--red:#9b342b;--radius:14px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:17px;line-height:1.65}a{color:var(--petrol);text-underline-offset:4px;text-decoration-thickness:1px}a:hover{text-decoration-thickness:2px}button,input,textarea{font:inherit}button,a.button{cursor:pointer}button:disabled{cursor:wait;opacity:.7}:focus-visible{outline:3px solid #ad6411;outline-offset:4px}button:focus-visible{outline-color:#ad6411}.main-card a:focus-visible{outline-color:var(--accent)}.skip{position:absolute;top:-80px;left:20px;background:white;padding:12px;z-index:10}.skip:focus{top:10px}.header{border-bottom:1px solid var(--line);background:var(--paper)}.header-inner{max-width:1240px;margin:auto;display:flex;justify-content:space-between;align-items:center;gap:30px;padding:22px 40px}.brand{display:flex;align-items:center;gap:13px;text-decoration:none;font-weight:750;letter-spacing:-.5px;white-space:nowrap}.brand-mark{background:var(--petrol);color:white;padding:0 8px;font-family:Georgia,serif;font-size:29px;line-height:1.45;border-radius:5px}.header nav{display:flex;flex-wrap:wrap;gap:8px 22px;font-size:14px}.header nav a{text-decoration:none;padding:4px 0}.header nav a[aria-current]{border-bottom:2px solid var(--petrol);font-weight:700}main{max-width:1160px;padding:0 40px 80px;margin:auto;min-height:65vh}.page-head{padding:72px 0 22px;max-width:900px}.eyebrow{text-transform:uppercase;font-size:12px;font-weight:750;letter-spacing:1.7px;line-height:1.5;margin:0 0 16px;color:var(--muted)}h1,h2,h3{line-height:1.13;font-weight:650;letter-spacing:-.035em}h1{font-size:clamp(38px,5.4vw,70px);margin:0 0 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0}.lesson-nav{justify-content:space-between}.export-panel,.backup-panel{max-width:900px;border:1px solid var(--line);border-radius:var(--radius);padding:32px;background:white}.backup-panel h2:not(:first-child){margin-top:40px}.export-panel input{max-width:550px}.danger{background:white;color:var(--red);border-color:var(--red)}.danger:hover{background:var(--red)}.status{font-size:14px;white-space:pre-line}.resource{border-top:1px solid var(--line);padding:28px 0;max-width:900px}.resource p{font-size:16px}.resource-limit{color:var(--muted);border-left:2px solid var(--line);padding-left:18px}.source-list{max-width:850px}.glossary{max-width:850px}.glossary div{border-top:1px solid var(--line);padding:23px 0;display:grid;grid-template-columns:240px 1fr;gap:25px}.glossary dt{font-size:21px;font-weight:650}.glossary dd{margin:0}footer{border-top:1px solid var(--line);max-width:1080px;margin:auto;padding:32px 0 45px;color:var(--muted);font-size:12px;display:grid;grid-template-columns:1fr 1.2fr 1.2fr;gap:30px}footer>span{font-size:20px;font-weight:700;color:var(--petrol)}footer p{margin:0}@media(max-width:800px){.header-inner{padding:18px 24px;display:block}.header nav{margin-top:17px;gap:8px 18px}main{padding:0 24px 55px}.page-head{padding-top:42px}h1{font-size:44px}.lede{font-size:19px}.routes,.split,.station-grid{grid-template-columns:1fr}.route-card{padding:28px}.route-card h2{max-width:100%;font-size:32px}.split{gap:15px;padding:25px 0}.syllabus{columns:1}.contrast{gap:20px}.reading{font-size:20px}.station-link{padding:24px}.glossary div{grid-template-columns:1fr;gap:8px}.export-panel,.backup-panel{padding:24px}footer{margin:0 24px;grid-template-columns:1fr;gap:15px}.session-strip{gap:7px 18px}.example{padding:24px}.question legend{font-size:20px}}@media(max-width:420px){main{padding-left:18px;padding-right:18px}.header-inner{padding:16px 18px}.header nav{gap:8px 14px;font-size:13px}h1{font-size:38px}.contrast{grid-template-columns:1fr;gap:24px}.route-card{padding:24px}.lesson-nav .button{width:100%}.choice label{font-size:15px;padding-right:12px}.choice input:checked+label{padding-right:11px}.letter{display:none}.export-panel,.backup-panel{padding:20px}.station-link{gap:14px;padding:20px}.station-link h2{font-size:22px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}@media print{.header,footer,.skip,.lesson-nav,.actions,button,.export-panel,nav,.progress-band{display:none!important}body{background:white;color:black;font-size:11pt}main{padding:0;max-width:none}.page-head{padding-top:0}h1{font-size:28pt}.feedback{display:block}.choice input:not(:checked)+label{opacity:.65}.reading{font-size:12pt}.question{break-inside:avoid}textarea{border:1px solid #777}.routes{display:block}.route-card{margin-bottom:20px}}
.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}
.question .all-feedback{display:none}.question:has(input:checked) .all-feedback{display:block}
h1,h2,h3,legend{overflow-wrap:break-word}p,li,dd{overflow-wrap:anywhere}
.foundation{max-width:900px;font-size:14px;color:var(--muted);margin:0 0 32px;line-height:1.7}
/* Weekly editorial architecture. */
:root{--paper:#fbfbf8;--white:#fff;--ink:#202727;--muted:#566564;--line:#d6dcda;--petrol:#285864;--deep:#173f49;--soft:#ecf2f1;--accent:#e9ba76;--radius:0;--serif:Georgia,'Times New Roman',serif;--sans:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif}
html{scroll-padding-top:95px}body{font:18px/1.68 var(--sans)}.header{border:0}.header-inner{max-width:1120px;padding:23px 0;border-bottom:1px solid var(--line);align-items:center}.brand{font-size:18px;line-height:1.12;font-weight:800;color:var(--ink);display:block;letter-spacing:0}.header nav{font-size:14px;gap:20px}.header nav a{min-height:35px;display:inline-flex;align-items:center}.header nav a[aria-current]{border-bottom-width:1px}.brand-mark{display:none}main{max-width:1200px;padding:0 40px 0}.hero{padding:68px 0 48px;max-width:930px;margin:0}.hero.home{padding:88px 0 58px;max-width:930px}h1,h2,h3{font-family:var(--serif);font-weight:400;line-height:1.1;letter-spacing:-.035em}h1{font-size:clamp(54px,7vw,100px);letter-spacing:-.055em;margin:0;max-width:1000px}.home h1{font-size:clamp(76px,9vw,120px);max-width:750px}.hero h1{margin:0}.hero .dek{font:26px/1.45 var(--serif);max-width:750px;margin:26px 0}.hero p:not(.eyebrow):not(.dek):not(.meta){max-width:800px}.home-intro{max-width:670px!important;font-size:18px;color:var(--muted)}.eyebrow{font-size:12px;letter-spacing:.12em;color:var(--petrol);font-weight:800;margin:0 0 22px}.page-head{padding:52px 0 42px;margin-bottom:0;max-width:1000px}.page-head h1{font-size:clamp(48px,6.5vw,88px);margin:0}.lede{font:25px/1.5 var(--serif);color:var(--ink);margin:24px 0 0;max-width:850px}h2{font-size:clamp(32px,4vw,48px);letter-spacing:-.03em;margin:0 0 20px}h3{font-size:27px;margin:0}.section,.week-current{padding:52px 0;border-bottom:1px solid var(--line);margin:0}.week-current{padding-top:18px}.available{display:flex;align-items:flex-start;gap:28px;border-top:2px solid var(--ink);padding:26px 0}.available h2{font-size:clamp(38px,4.5vw,56px);margin:0}.available p{color:var(--muted);margin:15px 0 8px}.week-number{font:60px/1 var(--serif);color:var(--petrol);padding-top:4px;min-width:70px}.meta,.small{font-size:14px;color:var(--muted)}.routes{display:grid;grid-template-columns:1fr 1fr;gap:1px;border:1px solid var(--line);background:var(--line);margin:25px 0}.route-card{display:block;border:0;border-radius:0;padding:28px;background:#fff;margin:0}.route-card h3{font-size:29px;margin:0 0 18px}.route-card p{font-size:16px;color:var(--muted);margin:14px 0}.route-card .eyebrow{font-size:11px;color:var(--petrol);margin:0 0 12px}.route-card .route-meta{font-size:13px;margin:18px 0!important;padding:0}.route-card .progress-text{font-size:13px;color:var(--petrol);margin-top:15px!important}.core-route{box-shadow:inset 0 3px var(--petrol)}button,.button,a.button{border-radius:0;min-height:48px;font-size:15px;font-weight:700;padding:11px 18px;gap:10px;white-space:normal}.button.secondary{background:transparent}.note,.notice{background:var(--soft);border-left:3px solid var(--petrol);padding:20px 23px;margin:26px 0;border-radius:0;font-size:16px}.note p{margin:12px 0}.week-list{list-style:none;padding:0;margin:30px 0}.week-list li{display:grid;grid-template-columns:48px 1fr 190px;gap:24px;border-top:1px solid var(--line);padding:24px 0;margin:0;align-items:start}.week-list .number{font-size:15px;color:var(--muted);font-variant-numeric:tabular-nums;padding-top:5px}.week-list h3{font-size:27px;line-height:1.23}.week-list .state{font-size:13px;color:var(--muted);line-height:1.6}.state-label{display:block;font-size:11px;text-transform:uppercase;letter-spacing:.08em;font-weight:700;margin-bottom:4px;color:var(--petrol)}.breadcrumbs{display:flex;gap:10px;flex-wrap:wrap;font-size:12px;margin:25px 0 -16px;color:var(--muted)}.breadcrumbs a{color:var(--petrol)}.week-bar{position:sticky;top:0;z-index:20;background:var(--paper);border-bottom:1px solid var(--line);padding:11px 0}.week-bar-inner{max-width:1120px;margin:auto;display:flex;justify-content:space-between;align-items:center;gap:22px;font-size:12px}.week-bar-inner>div{display:flex;gap:14px;align-items:center}.week-position{font-weight:700;color:var(--petrol)}progress{width:120px;height:8px;accent-color:var(--petrol)}.weekly-layout{display:grid;grid-template-columns:210px minmax(0,1fr);gap:72px;border-top:1px solid var(--line);padding-top:30px}.contents{align-self:start;position:sticky;top:76px;font-size:14px;padding-bottom:25px;max-height:calc(100vh - 100px);overflow-y:auto;scrollbar-width:thin}.contents .eyebrow{font-size:11px;margin:0 0 12px}.contents a{display:block;padding:9px 0;border-bottom:1px solid var(--line);text-decoration:none;font-size:13px;line-height:1.5;min-height:39px}.contents a[aria-current]{font-weight:800;color:var(--ink);border-left:3px solid var(--petrol);padding-left:12px;background:var(--soft)}.contents p:not(.eyebrow){font-size:12px;color:var(--muted);margin:20px 0}.lesson-body{min-width:0;padding-bottom:40px}.lesson-body .routes{grid-template-columns:1fr 1fr}.lesson-body .first-section{padding-top:0}.lesson-body>.reading p:first-child{margin-top:0}.reading{font-family:var(--sans);font-size:18px;line-height:1.78;max-width:100%}.reading p{margin:0 0 23px}.contrast{border-radius:0;gap:28px;padding:26px 0}.contrast h2{font-size:26px}.contrast p{font-size:16px}.example{background:#fff;border-left:3px solid #91aaa8;padding:20px 23px;border-radius:0}.example .eyebrow{font-size:11px}.ethics{background:var(--soft);border-left:3px solid var(--petrol);padding:20px 23px;margin:26px 0;font:21px/1.5 var(--serif)}.foundation{font-size:13px;line-height:1.65}.station-grid{display:block;margin-top:20px;border-top:2px solid var(--ink)}.station-link{border:0;border-bottom:1px solid var(--line);border-radius:0;background:transparent;padding:30px 0;gap:25px;margin:0}.station-link h2{font-size:31px}.station-link p{font:19px/1.5 var(--serif);color:var(--ink)}.station-link .station-no{font:50px/1 var(--serif);border:0;min-width:48px;color:var(--petrol)}.station-link:hover{background:var(--soft);text-decoration:none}.station-link span[data-station]{font-size:12px;color:var(--muted)}.final-link{background:var(--soft);padding:26px 23px;margin:30px 0;border:0}.final-link h2{font-size:30px}.continue-line{margin:24px 0}.question{padding:25px 0;margin:25px 0}.question legend{font:23px/1.45 var(--serif);padding-bottom:10px}.choice label{border-radius:0;font-size:16px;line-height:1.6}.choice input:checked+label{background:white;box-shadow:inset 3px 0 var(--petrol)}.feedback{border-radius:0;margin:0;background:var(--soft)}details{border-radius:0;background:transparent;padding:18px 0;border-left:0;border-right:0}.optional{background:#fbf7ed;padding:20px;border:1px solid #c9c1ac}.optional summary{font-size:15px}.question .all-feedback{border-top:0}.field{margin:28px 0}.field label{font-size:16px}input:not([type=radio]),textarea{border-radius:0;padding:14px}.progress-band{border-radius:0;background:transparent;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:14px 0;font-size:13px}.export-panel,.backup-panel{border-radius:0;padding:28px}.export-panel h2,.backup-panel h2{font-size:34px}.resource h3{font-size:27px}.glossary div{grid-template-columns:1fr;gap:9px}.glossary dt{font-family:var(--serif);font-size:26px;font-weight:400}.glossary dd{font-size:17px}.topic-outline{padding-left:23px}.topic-outline li{padding:10px 0;border-bottom:1px solid var(--line);font-size:17px}.topic-outline li span{display:block;font-size:12px;color:var(--muted)}.continue{background:var(--petrol);color:white;padding:30px;margin:40px 0 0}.continue h2{font-size:34px}.continue p{color:#e1ecea;font-size:16px}.continue .button{background:white;border-color:white;color:var(--petrol);margin:5px 8px 5px 0}.continue .button.secondary{background:transparent;color:white}.continue .button:focus-visible{outline-color:var(--accent)}footer{max-width:1120px;display:block;border-top:0;padding:45px 0;font-size:12px}footer>span{font-family:var(--sans);font-size:14px;font-weight:700}footer p{margin:10px 0;max-width:900px}.lesson-nav{border-top:1px solid var(--line);padding-top:24px;margin-top:30px}
@media(max-width:1180px){.header-inner,.week-bar-inner,footer{margin-left:40px;margin-right:40px}.weekly-layout{gap:50px;grid-template-columns:190px minmax(0,1fr)}}
@media(max-width:960px){.weekly-layout{display:block;padding-top:0}.contents{position:static;display:flex;flex-wrap:wrap;max-height:none;overflow:visible;gap:0 18px;border-bottom:1px solid var(--line);padding:15px 0 20px;margin-bottom:30px}.contents .eyebrow,.contents p{width:100%;margin:10px 0}.contents a{border:0;padding:9px 0;min-height:0}.contents a[aria-current]{padding:9px 10px;border-left:0;border-bottom:2px solid var(--petrol)}.lesson-body{max-width:760px;margin:auto}.lesson-body .routes{grid-template-columns:1fr 1fr}.page-head h1{font-size:clamp(48px,7vw,72px)}.hero{padding:55px 0 40px}.hero.home{padding:65px 0 45px}}
@media(max-width:700px){main{padding:0 24px}.header-inner,.week-bar-inner,footer{margin-left:24px;margin-right:24px}.header-inner{display:flex;padding:22px 0;gap:18px;align-items:flex-start}.header nav{margin:0;font-size:12px;gap:5px 15px;justify-content:flex-end;max-width:60%}.brand{font-size:16px}.home h1{font-size:82px}.hero .dek{font-size:23px}.hero h1{font-size:58px}.page-head{padding:45px 0 30px}.page-head h1{font-size:52px}.lede{font-size:22px}.routes,.lesson-body .routes{grid-template-columns:1fr 1fr}.route-card{padding:24px}.available{gap:18px}.week-number{font-size:46px;min-width:50px}.available h2{font-size:38px}.available p{font-size:15px}.section{padding:40px 0}.week-list li{grid-template-columns:35px 1fr;gap:10px 15px;padding:22px 0}.week-list h3{font-size:25px}.week-list .state{grid-column:2}.state-label{display:inline;margin-right:8px}.week-bar-inner{display:block;font-size:11px}.week-bar-inner>div{justify-content:space-between;gap:12px;margin-top:6px}.week-bar progress{width:80px;flex-shrink:0}.week-bar [data-progress]{font-size:10px;line-height:1.4}.week-position{font-size:12px}.station-link{gap:18px}.station-link h2{font-size:29px}.station-link .station-no{font-size:40px;min-width:40px}.station-link p{font-size:18px}.reading{font-size:17px}.question legend{font-size:22px}.breadcrumbs{font-size:11px;gap:6px;margin-top:18px}.contents{gap:0 14px}.contents a{font-size:12px}.export-panel,.backup-panel{padding:22px}.contrast{grid-template-columns:1fr}.continue{padding:25px}.continue .button{width:100%;margin:5px 0}.export-panel h2{font-size:32px}}
@media(max-width:380px){main{padding:0 16px}.header-inner,.week-bar-inner,footer{margin-left:16px;margin-right:16px}.home h1{font-size:70px}.hero h1,.page-head h1{font-size:44px}.hero .dek{font-size:22px}.week-number{font-size:40px;min-width:42px}.available{gap:12px}.available h2{font-size:34px}.station-link h2{font-size:26px}.station-link{gap:14px}.question legend{font-size:21px}}
@media print{.week-bar,.breadcrumbs,.contents,.continue-line,.lesson-nav{display:none!important}.weekly-layout{display:block;border:0;padding:0}.lesson-body{max-width:none}.hero,.page-head{padding:15px 0}h1,.home h1,.hero h1,.page-head h1{font-size:30pt}h2{font-size:22pt}.reading{font-size:11pt}.section{padding:16px 0}.week-list li{break-inside:avoid}}