.guide-book{max-width:1180px;margin:auto;color:var(--ink)}
.guide-cover{display:grid;grid-template-columns:1.5fr 1fr;gap:38px;background:#f1efdf;border:1px solid #d7dbcc;border-radius:24px;padding:46px;overflow:hidden}
.guide-cover h1{font:clamp(36px,4vw,64px)/1.08 Georgia,serif;letter-spacing:-.035em;margin:20px 0}.guide-cover h1 em{color:#18796e;font-weight:400}
.guide-deck{font-size:19px;line-height:1.65;max-width:62ch}.guide-cover .action-row{margin:25px 0}.guide-cover-art{position:relative;display:flex;align-items:center;justify-content:center;min-height:360px}
.guide-notebook{background:#173d3d;color:#fcfaf2;width:250px;min-height:300px;padding:30px;border-radius:7px 20px 20px 7px;border-left:10px solid #c4b477;box-shadow:16px 18px 0 #d5d6ba;transform:rotate(-7deg);font-size:13px;letter-spacing:.08em;display:flex;flex-direction:column;gap:24px}.guide-notebook strong{font:28px/1.3 Georgia,serif;letter-spacing:0}.guide-notebook span{font-size:12px;letter-spacing:0}.guide-orbit{position:absolute;top:0;right:0;font-size:13px;letter-spacing:.25em}.guide-sticker{position:absolute;right:-10px;bottom:8px;background:#f6cf6b;border-radius:50%;width:110px;height:110px;display:grid;place-content:center;text-align:center;font-weight:700;transform:rotate(9deg);line-height:1.4}
.guide-how{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;margin:30px 0 40px}.guide-how>div{padding:20px;border-bottom:2px solid #d9e3dc}.guide-how span{color:#18796e;font:28px Georgia,serif}.guide-how h2{font-size:20px;margin:10px 0}.guide-how p{margin:0;color:var(--ink-soft)}
.guide-section-heading,.guide-card-top,.guide-card-bottom,.guide-chapter-bar{display:flex;justify-content:space-between;gap:15px;align-items:center;flex-wrap:wrap}.guide-section-heading{margin-bottom:20px}.guide-section-heading h2{font:32px Georgia,serif;margin:6px 0}.guide-contents{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.guide-chapter-card{font:inherit;color:var(--ink);text-align:left;background:white;border:1px solid #d9e3dc;border-radius:18px;padding:24px;cursor:pointer;display:flex;flex-direction:column;gap:18px;min-width:0;transition:transform .15s,border-color .15s}.guide-chapter-card:hover{transform:translateY(-3px);border-color:#18796e}.guide-card-top{font-size:11px;letter-spacing:.035em;text-transform:uppercase;color:#42655e;flex-wrap:nowrap}.guide-chapter-card h3{font:26px/1.2 Georgia,serif;margin:0}.guide-chapter-card p{font-size:14px;line-height:1.6;color:var(--ink-soft);margin:0;flex:1}.guide-card-bottom{font-size:12px;font-weight:700;color:#18796e;padding-top:12px;border-top:1px solid #e3e9e6}.guide-footnote{color:var(--ink-soft);font-size:13px;line-height:1.7;margin:30px 0}
.guide-chapter-heading{padding:34px 0 22px}.guide-chapter-heading h1{font:clamp(32px,4vw,48px)/1.12 Georgia,serif;max-width:22ch;margin:14px 0}.guide-chapter-bar{font-size:11px;letter-spacing:.06em}.guide-reading-layout{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:26px;align-items:start}.guide-reading-layout article{min-width:0}.guide-reading p,.guide-note-body>p{font-size:16px;line-height:1.85}.guide-memory{background:#eef4e5;border-left:4px solid #789e72;padding:20px;margin-top:24px;border-radius:0 12px 12px 0}.guide-memory>span{display:flex;gap:10px;align-items:center;text-transform:uppercase;letter-spacing:.06em;font-size:11px;font-weight:700}.guide-memory p{font:22px/1.5 Georgia,serif;margin:12px 0 0}.guide-chapter-nav{position:sticky;top:20px;background:#edf2eb;border:1px solid #dce5da;border-radius:18px;padding:20px}.guide-chapter-nav nav{display:grid;gap:5px}.guide-chapter-nav button{border:0;background:transparent;color:var(--ink);font:inherit;font-size:13px;line-height:1.4;text-align:left;padding:10px;border-radius:8px;cursor:pointer}.guide-chapter-nav button span{display:inline-block;color:#43685b;margin-right:8px}.guide-chapter-nav button small{display:block;margin-top:4px;color:#176852}.guide-chapter-nav [aria-current]{background:white;font-weight:700}.guide-chapter-nav>p:last-child{margin-top:20px;color:#4d6064;line-height:1.6}
.guide-fieldnotes{margin:30px 0}.guide-fieldnotes>p{color:var(--ink-soft);line-height:1.7}.guide-note{border:1px solid #d8e2db;border-radius:14px;margin:12px 0;background:white;overflow:hidden}.guide-note summary{padding:20px;cursor:pointer;font-weight:650;line-height:1.4}.guide-note summary small{display:block;font-weight:400;color:#43685b;margin:6px 0 0 18px}.guide-note-body{padding:0 24px 24px}.guide-example{background:#faf5e8;padding:20px;border-radius:12px;margin:22px 0}.guide-example ol{padding-left:22px}.guide-example li{padding:6px 0}.guide-example li p{margin:6px 0;line-height:1.7}.guide-check,.guide-proof{border:0;padding:0;margin:22px 0;min-width:0}.guide-check legend,.guide-proof legend{font-weight:700;line-height:1.65;margin-bottom:15px}.guide-choice{display:flex;gap:14px;text-align:left;width:100%;padding:15px;margin:9px 0;border:1px solid #cbd8cf;background:white;color:var(--ink);border-radius:10px;font:inherit;font-size:15px;line-height:1.55;cursor:pointer}.guide-choice>span:first-child{font-weight:700;color:#246655}.guide-choice.chosen{background:#e8f5ef;border-color:#18796e;box-shadow:inset 3px 0 #18796e}.guide-lab{border-top:5px solid #dbb55c}.guide-lab h2{font:30px Georgia,serif}.guide-story{padding:20px;background:#f6f4ed;border-radius:12px;line-height:1.8}.guide-controls{display:grid;gap:12px;margin:20px 0}.guide-controls label,.guide-proof label{display:flex;gap:12px;align-items:start;padding:14px;border:1px solid #d5dfd6;background:white;border-radius:10px;font-size:15px;line-height:1.6;cursor:pointer}.guide-controls input,.guide-proof input{width:19px;height:19px;flex-shrink:0;margin-top:3px;accent-color:#18796e}.guide-rule-grid,.guide-tax-slices{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:20px 0}.guide-rule-grid>div,.guide-tax-slices>div{background:#edf3e6;padding:16px;border-radius:10px;display:grid;gap:10px;font-size:14px}.guide-rule-grid .unmet{background:#fcf0e1}.guide-rule-grid span{font-size:12px;line-height:1.5}.guide-map{display:flex;align-items:stretch;gap:8px;margin:24px 0}.guide-map>div{flex:1;text-align:center;border:2px solid #728f8c;border-radius:10px;padding:18px 7px;background:#edf1ee;font:26px Georgia,serif}.guide-map>div strong{display:block;font:12px/1.5 system-ui;margin-top:10px}.guide-map>span{align-self:center}.guide-map .covered{border-color:#18796e;background:#e8f5ef}.guide-map .missing{border:2px dashed #a16b32;background:#faf0df}.guide-lab input[type=range]{width:100%;accent-color:#18796e}.guide-tax-slices strong{font-size:20px}.guide-tax-slices meter{width:100%;height:14px}.guide-tax-total{background:#173d3d;color:white;border-radius:12px;padding:18px;line-height:1.7}.guide-proof{display:grid;gap:10px}.guide-line-number{font-weight:700;color:#43685b}.guide-finish{margin-top:24px}.guide-finish .action-row{margin-top:20px}.guide-book button:focus-visible,.guide-book summary:focus-visible,.guide-book a:focus-visible{outline:3px solid #a97019;outline-offset:3px}.guide-book .feedback{line-height:1.7}.guide-book .feedback ol{padding-left:22px}.guide-book .feedback li{margin:8px 0}
@media(max-width:1100px){.guide-cover{padding:30px;gap:20px}.guide-cover-art{min-height:320px}.guide-notebook{width:210px;padding:24px}.guide-contents{grid-template-columns:repeat(2,minmax(0,1fr))}.guide-reading-layout{grid-template-columns:minmax(0,1fr)}.guide-chapter-nav{position:static}.guide-chapter-nav nav{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:600px){.guide-cover{grid-template-columns:1fr;padding:26px}.guide-cover-art{min-height:300px}.guide-how{grid-template-columns:1fr;gap:0;margin:15px 0 30px}.guide-how>div{padding:18px 0}.guide-contents{grid-template-columns:1fr}.guide-chapter-bar{gap:10px}.guide-reading{padding:22px!important}.guide-note-body{padding:0 18px 18px}.guide-rule-grid,.guide-tax-slices{grid-template-columns:1fr}.guide-map{flex-direction:column}.guide-map>span{transform:rotate(90deg)}.guide-map>div{font-size:24px;padding:12px}.guide-map>div strong{margin-top:4px}.guide-chapter-nav nav{grid-template-columns:1fr}.guide-lab{padding:20px!important}.guide-section-heading .tag{white-space:normal}.guide-deck{font-size:17px}.guide-check legend{font-size:15px}}
@media(prefers-reduced-motion:reduce){.guide-chapter-card{transition:none}.guide-chapter-card:hover{transform:none}}
:root{
  --ink:#20343a;--ink-soft:#4d6064;--muted:#7b8a8b;--hair:#e3e9e6;--canvas:#f6f8f6;
  --paper:#fff;--cream:#fcfaf5;--nav:#153139;--nav-muted:#a6c0c1;--teal:#18796e;
  --teal-dark:#145f58;--teal-faint:#e8f5ef;--blue:#486f9a;--blue-faint:#eef4fb;
  --amber:#bd7b28;--amber-faint:#fcf3e4;--rose:#a66175;--rose-faint:#fbf0f1;
  --red:#b24840;--red-soft:#fff0ed;--shadow:0 12px 36px rgba(33,66,65,.06);
  --radius:19px;--display:Georgia, 'Times New Roman', serif;
}
.teaching-layout{display:grid;grid-template-columns:minmax(0,2.1fr) minmax(240px,1fr);gap:22px;align-items:start}
.teaching-screen{padding:30px;min-width:0}.teaching-screen h2{scroll-margin-top:24px}.teaching-screen p{line-height:1.85}.teaching-lead{font-size:18px;max-width:70ch}
.teaching-position{display:flex;justify-content:space-between;gap:12px;color:var(--ink-soft);font-size:11px;font-weight:700;letter-spacing:.07em}.teaching-progress{width:100%;height:6px;margin:15px 0 20px;border:0;accent-color:var(--teal)}
.teaching-progress::-webkit-progress-bar{background:var(--hair);border-radius:8px}.teaching-progress::-webkit-progress-value{background:var(--teal);border-radius:8px}
.teaching-side{display:grid;gap:18px}.beginner-glossary{margin:16px 0 24px;display:grid;gap:12px}.beginner-glossary>div{border-left:3px solid var(--teal);padding:10px 16px;background:var(--canvas)}.beginner-glossary dt{font-weight:750}.beginner-glossary dd{margin:5px 0 0;line-height:1.7}
.why-card,.teaching-pause,.diagram-explanation{background:var(--teal-faint);padding:18px;border-radius:12px;margin:20px 0}.why-card h3,.diagram-explanation h4{margin:0}.why-card p,.diagram-explanation p:last-child{margin-bottom:0}
.teaching-reveal{margin:22px 0;padding:15px;border:1px solid var(--hair);border-radius:10px}.teaching-screen summary{cursor:pointer;font-weight:600;min-height:32px}.teaching-navigation{display:flex;justify-content:space-between;gap:12px;border-top:1px solid var(--hair);padding-top:22px;margin-top:28px;flex-wrap:wrap}
.lesson-outline{padding-left:22px;display:grid;gap:8px}.lesson-outline button{font:inherit;background:transparent;border:0;color:var(--ink-soft);text-align:left;padding:9px 10px;cursor:pointer;border-radius:8px;min-height:44px;width:100%}.lesson-outline button[aria-current]{background:var(--teal-faint);color:var(--teal-dark);font-weight:700}
.staged-working:empty{display:none}.teaching-diagram input[type=range]{width:100%;height:40px;accent-color:var(--teal)}.visual-check{display:flex;gap:12px;align-items:center;padding:10px 0;min-height:44px}.visual-check input{width:20px;height:20px;flex-shrink:0;accent-color:var(--teal)}
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.band-stack{display:grid;gap:12px;margin:24px 0}.band-row{padding:15px;border:1px solid var(--hair);border-radius:10px}.band-row p{margin:8px 0 0}.band-meter,.growth-meter,.year-track{background:#e3e9e6;border-radius:7px;overflow:hidden;height:14px}.band-meter{margin-top:10px}.band-meter span,.growth-meter span,.year-track span{display:block;height:100%;background:var(--teal)}.band-row:nth-child(2) .band-meter span{background:#486f9a}.band-row:nth-child(3) .band-meter span{background:#a77022}
.money-ledger>div{display:flex;justify-content:space-between;gap:14px;padding:12px 0;border-bottom:1px solid var(--hair)}.money-ledger strong{white-space:nowrap}.growth-rows{display:grid;gap:12px;margin-top:22px}.growth-rows>div{display:grid;gap:6px;background:var(--canvas);padding:15px;border-radius:10px}.inverse-diagram{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px;align-items:center;text-align:center;margin:24px 0}.inverse-diagram>div{background:var(--canvas);border-radius:10px;padding:12px}.inverse-diagram span{display:block;margin:8px 0}
.relationship-diagram{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px;align-items:center;text-align:center;margin:24px 0}.relation-person{border:1px solid var(--teal);padding:16px 12px;border-radius:10px;background:var(--canvas)}.relation-person small,.relation-link span{display:block}.relation-link span{font-size:25px}.relation-link{font-size:13px}.relationship-diagram>.relation-link:nth-child(5){grid-column:3}.relationship-diagram>.relation-person:nth-child(6){grid-column:3}.claim-branches{margin:20px 0}.incident-node{text-align:center;padding:15px;background:var(--teal-faint);border-radius:10px}.branch-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:18px}.branch-row>div{border-top:3px solid var(--teal);padding:15px;background:var(--canvas)}
.rule-gates,.rights-matrix{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:12px;margin:24px 0}.rule-gates>div,.rights-matrix>div{padding:15px;border:1px solid var(--hair);border-radius:10px}.rule-gates span,.rights-matrix span{display:block;margin-top:8px}.gate-met{background:var(--teal-faint)}.gate-missing{background:var(--amber-faint)}.land-figure{margin:24px 0}.land-figure svg{display:block;max-width:480px;width:100%;height:auto;font:14px 'Segoe UI',sans-serif}.land-figure figcaption{font-size:13px;color:var(--ink-soft)}
.hundred-grid{display:grid;grid-template-columns:repeat(10,1fr);gap:4px;max-width:360px;margin:24px auto}.hundred-grid>span{aspect-ratio:1;border:1px solid #728d85;background:#f6f8f6}.hundred-grid>.filled{background:var(--teal)}.fraction-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:4px;margin:24px 0}.fraction-strip>div{border:1px solid var(--teal);padding:16px 4px;text-align:center}.fraction-strip small{display:block;font-size:11px}.fraction-strip>.filled{background:var(--teal-faint);border-bottom:5px solid var(--teal)}.equal-groups{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:24px 0}.equal-groups>div{background:var(--teal-faint);padding:18px 8px;border-radius:8px;text-align:center}.equal-groups span{display:block;font-size:12px}.equation{font-weight:bold}.sentence-diagram{display:flex;flex-wrap:wrap;gap:8px;margin:24px 0}.sentence-diagram>span{padding:16px;background:var(--canvas);border-radius:8px}.sentence-diagram small{display:block;font-size:11px}.sentence-diagram>.sentence-subject,.sentence-diagram>.sentence-verb{background:var(--teal-faint);border-bottom:3px solid var(--teal)}
.difficulty-ladder{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:22px 0}.difficulty-ladder>div{border-top:4px solid var(--teal);background:white;padding:20px;border-radius:10px}.difficulty-ladder>div:nth-child(2){border-color:#486f9a}.difficulty-ladder>div:nth-child(3){border-color:#a77022}.difficulty-ladder>div:nth-child(4){border-color:#a66175}.difficulty-ladder p{margin-bottom:0;color:var(--ink-soft)}.route-recommendation{border-left:5px solid var(--teal)}.route-lessons{padding-left:24px}.route-lessons li{padding:15px 0;border-bottom:1px solid var(--hair)}.route-lessons li>div{margin-bottom:10px}.route-lessons span{display:block;font-size:13px;color:var(--ink-soft);margin-top:5px}
@media(max-width:1000px){.teaching-layout{grid-template-columns:minmax(0,1fr)}.teaching-side{grid-template-columns:repeat(2,minmax(0,1fr))}.difficulty-ladder{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.teaching-screen{padding:20px 16px}.teaching-side{grid-template-columns:minmax(0,1fr)}.teaching-lead{font-size:17px}.teaching-position{flex-direction:column;gap:4px}.difficulty-ladder{gap:8px}.difficulty-ladder>div{padding:14px 10px}.visual-flow{flex-direction:column;gap:24px}.flow-node{flex-basis:auto}.flow-node:not(:last-child)::after{content:'↓';right:auto;top:auto;bottom:-25px;left:50%}.parallel .flow-node::after{content:none}.relationship-diagram{grid-template-columns:minmax(0,1fr)}.relation-spacer{display:none}.relationship-diagram>.relation-link:nth-child(5),.relationship-diagram>.relation-person:nth-child(6){grid-column:1}.relation-link span{transform:rotate(90deg)}.relationship-diagram>.relation-link:nth-child(5) span{transform:none}.branch-row{grid-template-columns:1fr}.equal-groups{grid-template-columns:repeat(2,1fr)}.inverse-diagram{font-size:13px}.inverse-diagram>div{padding:8px 4px}.fraction-strip{font-size:14px}}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--canvas);color:var(--ink);font-family:Inter,'Segoe UI',-apple-system,BlinkMacSystemFont,Arial,sans-serif;font-size:15px;line-height:1.55}
button,input,textarea,select{font:inherit}
button{cursor:pointer}
button:disabled{opacity:.45;cursor:not-allowed}
a{color:inherit}
:focus-visible{outline:3px solid #73b8aa;outline-offset:3px}
button, .lesson-choice{transition:transform .15s,background .15s,border .15s,box-shadow .15s}
button:not(:disabled):active{transform:translateY(1px)}
#app{display:flex;min-height:100vh}
.sidebar{position:fixed;inset:0 auto 0 0;width:266px;background:var(--nav);color:#f6ffff;padding:26px 18px 20px;display:flex;flex-direction:column;z-index:20;overflow:auto;overscroll-behavior:contain}
.brand{display:flex;align-items:center;gap:12px;padding:6px 12px 22px;border-bottom:1px solid rgba(255,255,255,.12)}
.brand-mark{height:48px;width:48px;flex-shrink:0;border-radius:8px;display:block;object-fit:contain}
.brand strong{display:block;font-size:16px;letter-spacing:.065em;line-height:1.2}
.brand small{display:block;letter-spacing:.17em;text-transform:uppercase;color:#a7c2c0;font-size:9px;margin-top:5px}
.side-caption{text-transform:uppercase;color:#779da0;font-weight:750;letter-spacing:.19em;font-size:10px;padding:22px 14px 9px}
.nav-group{display:grid;gap:4px}
.nav-link{display:flex;gap:12px;align-items:center;min-height:44px;border:0;border-radius:12px;padding:10px 13px;color:#b8cdd0;background:transparent;text-align:left;font-weight:550;width:100%;position:relative}
.nav-link:hover{background:rgba(255,255,255,.075);color:#fff}
.nav-link.active{background:rgba(230,253,245,.13);color:#fff;box-shadow:inset 3px 0 #d5b88e}
.nav-icon{display:inline-flex;width:20px;justify-content:center;color:inherit;align-items:center}
.svg-icon{width:19px;height:19px;stroke:currentColor;stroke-width:1.9;fill:none;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}
.svg-icon.sm{width:15px;height:15px}
.svg-icon.lg{width:24px;height:24px}
.svg-icon.xl{width:29px;height:29px}
.pulse-dot{height:7px;width:7px;border-radius:50%;background:#9eddcc;margin-left:auto}
.sidebar-bottom{margin-top:auto;padding:16px 8px 4px}
.sidebar-privacy{background:rgba(255,255,255,.065);border:1px solid rgba(255,255,255,.09);padding:15px 14px;border-radius:16px;display:grid;gap:7px}
.sidebar-privacy strong{font-size:12px;color:#fff}.sidebar-privacy p{margin:0;color:#adc5c6;font-size:12px;line-height:1.55}
.sidebar-privacy .svg-icon{color:#e2c79d}
.content-wrap{margin-left:266px;min-width:0;width:calc(100% - 266px);min-height:100vh}
.topbar{min-height:85px;padding:20px 46px 14px;display:flex;justify-content:space-between;align-items:center;gap:16px;background:var(--canvas)}
.eyebrow{font-size:11px;text-transform:uppercase;letter-spacing:.17em;font-weight:750;color:var(--teal);margin:0 0 11px}
.topbar .eyebrow{color:#8b9b9b;font-size:10px;margin:0}
.topbar-title{font-family:var(--display);font-size:19px;font-weight:600;margin-top:3px}
.topbar-actions{display:flex;align-items:center;gap:11px}
.date-chip,.timer{border:1px solid var(--hair);border-radius:11px;background:#fff;color:#586b6a;padding:10px 13px;font-size:12px;display:inline-flex;align-items:center;gap:8px;white-space:nowrap}
.timer{color:var(--teal-dark);font-variant-numeric:tabular-nums;letter-spacing:.06em;font-weight:750}
.profile{border-radius:50%;background:#dceae4;color:#255f57;width:40px;height:40px;display:grid;place-items:center;font-weight:750;letter-spacing:.03em}
.mobile-menu,.close-menu{display:none}
main.main{width:min(1300px,100%);margin:0 auto;padding:20px 45px 68px}
.main.narrow{max-width:1250px}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin:12px 0 23px}
h1,h2,h3,h4,p{margin-top:0}
h1,h2,h3{letter-spacing:-.032em}
h1{font-family:var(--display);font-size:clamp(32px,4vw,49px);font-weight:500;line-height:1.13;margin:0 0 16px;color:#20383e}
h2{font-size:23px;line-height:1.2;font-weight:750;margin:0}h3{font-size:17px;font-weight:750;margin:0}
p{color:var(--ink-soft);margin-bottom:12px}
.muted{color:var(--muted)!important}.small{font-size:12px}.tiny{font-size:11px}.lead{font-size:16px;line-height:1.7;color:#52686a}.subhead{font-family:var(--display);font-size:29px;font-weight:500}
.hero{background:linear-gradient(108deg,#f8f3e9,#f4f8f3 73%,#e9f5ef);border:1px solid #e6e9e1;border-radius:25px;min-height:310px;padding:39px 38px;display:grid;grid-template-columns:1.2fr .8fr;align-items:center;gap:35px;box-shadow:var(--shadow);overflow:hidden;position:relative}
.hero:before{content:'';position:absolute;width:350px;height:350px;right:-170px;top:-160px;border:1px solid rgba(29,115,103,.2);border-radius:50%;box-shadow:0 0 0 32px rgba(24,121,110,.035),0 0 0 70px rgba(24,121,110,.025);pointer-events:none}
.hero h1{max-width:640px}.hero p{max-width:520px}
.hero-actions,.action-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:20px}
.btn{border:1px solid transparent;border-radius:11px;padding:11px 16px;display:inline-flex;justify-content:center;align-items:center;gap:9px;font-weight:750;font-size:13px;min-height:43px;background:#fff;color:var(--ink)}
.btn-primary{background:var(--teal);color:white}.btn-primary:hover{background:var(--teal-dark)}
.btn-outline{background:rgba(255,255,255,.8);color:var(--ink);border-color:#d5e1dd}.btn-outline:hover{background:#eaf4f0}
.btn-quiet{background:transparent;color:#54716f;border-color:transparent}.btn-quiet:hover{background:#ebf2ef}
.btn-small{padding:8px 12px;min-height:36px;font-size:12px}.btn-danger{color:var(--red);border-color:#f3d8d3;background:#fff}.btn-danger:hover{background:#fff1ee}
.focus-card{background:rgba(255,255,255,.94);padding:26px;border:1px solid rgba(220,232,222,.93);border-radius:20px;box-shadow:0 18px 40px rgba(45,90,74,.08);position:relative;z-index:1}
.focus-label{font-size:11px;letter-spacing:.15em;text-transform:uppercase;color:var(--teal);font-weight:800}
.focus-card h3{font-family:var(--display);font-size:23px;font-weight:500;line-height:1.23;margin:10px 0 13px}
.focus-card p{font-size:12px;margin-bottom:16px}
.focus-steps{display:grid;gap:11px;margin:15px 0 0}.focus-step{display:flex;align-items:center;gap:11px;font-size:12px;color:#496061}.focus-step span:first-child{background:#e9f4ef;border:1px solid #dcebe4;border-radius:9px;height:29px;width:29px;display:grid;place-items:center;font-weight:800;color:#32776b}
.stats-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:15px;margin:20px 0 34px}
.stat{background:var(--paper);border:1px solid var(--hair);padding:22px 22px 18px;border-radius:17px;box-shadow:0 4px 15px rgba(14,49,44,.025)}
.stat-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:9px;color:#7d9392}
.stat-title{font-size:12px;font-weight:600}.stat-value{font-size:31px;font-weight:750;letter-spacing:-.05em;line-height:1.2}.stat-caption{font-size:11px;color:#879493;margin-top:6px}
.stat .svg-icon{color:var(--teal)}
.panel{background:#fff;border:1px solid var(--hair);border-radius:19px;padding:24px;box-shadow:0 3px 20px rgba(25,54,48,.025)}
.panel + .panel{margin-top:15px}.panel-title{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;margin-bottom:18px}.panel-title h2{font-size:20px}.panel-title p{font-size:12px;margin:5px 0 0}
.home-grid{display:grid;grid-template-columns:1.4fr .9fr;gap:18px;margin-bottom:27px}.home-grid .panel{min-height:320px}
.track-list{display:grid;gap:14px}.track-item{display:grid;grid-template-columns:48px 1fr auto;align-items:center;gap:14px;border:1px solid #ecf0ed;border-radius:13px;padding:15px;background:#fdfefd}
.track-icon,.round-icon{width:46px;height:46px;display:grid;place-items:center;border-radius:12px;background:#e7f3ef;color:#26736a}.track-icon.blue{background:#eef3fb;color:#426c9b}.track-icon.sand{background:#fdf3e7;color:#a8753d}.track-icon.rose{background:#f9eff2;color:#ad6880}
.track-item h3{font-size:14px;margin-bottom:2px}.track-item p{font-size:11px;margin:0;color:#8b9998}.track-meta{font-size:11px;color:#758583;font-weight:700;white-space:nowrap}
.progress-track{width:100%;height:7px;background:#edf1ed;overflow:hidden;border-radius:50px;margin-top:9px}.progress-fill{height:100%;background:#2c947d;border-radius:50px;transition:width .25s}
.list-rows{display:grid;gap:0}.info-row{display:flex;justify-content:space-between;gap:14px;align-items:flex-start;padding:14px 0;border-bottom:1px solid #edf0ed}.info-row:last-child{border:0}.info-row h4{font-size:13px;margin:0 0 4px;font-weight:750}.info-row p{font-size:11px;margin:0}.info-row .svg-icon{color:var(--teal)}
.task-list{display:grid;gap:12px}.task-item{display:flex;gap:11px;align-items:flex-start;font-size:13px}.task-item .checkmark{color:var(--teal);background:#e7f5ed;border-radius:7px;padding:3px}
.section-top{display:flex;gap:24px;justify-content:space-between;align-items:flex-end;margin:5px 0 23px}.section-top h1{font-size:37px;margin-bottom:8px}.section-top p{margin:0;font-size:13px;max-width:680px}
.searchrow{display:flex;gap:12px;align-items:center;margin:14px 0 20px;flex-wrap:wrap}.search{min-width:240px;flex:1;display:flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--hair);border-radius:13px;padding:1px 13px;min-height:45px;color:#91a19e}.search input{background:transparent;border:0;outline:0;width:100%;color:var(--ink);font-size:13px}
.pills{display:flex;gap:6px;flex-wrap:wrap}.pill-button{border:1px solid #dee7e2;background:#fff;border-radius:10px;padding:10px 13px;font-size:12px;font-weight:750;color:#70807e}.pill-button.active{background:#def0e9;border-color:#b9ded0;color:#17695e}
.module-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.module-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--hair);border-radius:17px;padding:21px;min-height:252px;box-shadow:0 4px 18px rgba(9,49,46,.025)}.module-card:hover{border-color:#bbd9cf;box-shadow:var(--shadow)}
.module-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:18px}.module-code{font-size:11px;font-weight:800;color:#6d8684;letter-spacing:.1em;text-transform:uppercase}.module-card h3{font-size:17px;line-height:1.3;margin-bottom:10px}.module-card p{font-size:12px;line-height:1.6;flex:1}.module-foot{display:flex;align-items:center;justify-content:space-between;margin-top:18px;gap:8px}
.tag{display:inline-flex;align-items:center;gap:5px;border-radius:7px;font-size:11px;font-weight:750;padding:5px 8px;background:#f0f3f0;color:#738480;white-space:nowrap}.tag.started{background:#fdf2e1;color:#986f2e}.tag.provisional{background:#eaf4fb;color:#3e7198}.tag.competent{background:#e6f5ec;color:#23735a}.tag.due{background:#fcece5;color:#a45b45}.tag.special{background:#e9f5f0;color:#257c6b}
.empty{padding:55px 25px;display:flex;flex-direction:column;align-items:center;text-align:center;gap:10px;color:#7b908a}.empty h3{font-size:19px;color:var(--ink)}
.breadcrumb{display:flex;align-items:center;gap:9px;font-size:12px;color:#82938e;margin-bottom:20px;flex-wrap:wrap}.breadcrumb button{color:var(--teal);padding:0;border:0;background:none;font-size:12px;font-weight:650}
.lesson-head{background:#fdfaf3;border:1px solid #eae7da;padding:30px 32px;border-radius:20px;margin-bottom:20px;position:relative;overflow:hidden}.lesson-head:after{content:'§';font-family:var(--display);font-size:235px;position:absolute;right:24px;top:-95px;color:rgba(36,116,98,.07);pointer-events:none}
.lesson-head>*{position:relative;z-index:1}.lesson-head h1{font-size:39px;max-width:760px}.lesson-head p{max-width:750px;margin:0}.lesson-meta{display:flex;gap:9px;align-items:center;margin:14px 0 0;flex-wrap:wrap}
.module-tabs{display:flex;gap:6px;background:#eaf0ec;border-radius:13px;padding:5px;margin:0 0 19px;width:max-content;max-width:100%;flex-wrap:wrap}.module-tab{padding:9px 18px;color:#667a74;background:transparent;border:0;border-radius:10px;font-weight:800;font-size:12px}.module-tab.active{background:#fff;color:#176a60;box-shadow:0 2px 8px #cddfd8}
.lesson-grid{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(255px,.75fr);gap:18px;align-items:start}.read-panel{display:grid;gap:17px}.lesson-step{border:1px solid #e8eeeb;border-radius:15px;background:#fff;padding:22px 23px}.lesson-step-heading{display:flex;gap:12px;align-items:center;margin-bottom:12px}.lesson-step-num{border-radius:9px;background:#eaf5ed;color:#2a7d6c;height:31px;width:31px;display:grid;place-items:center;font-size:12px;font-weight:800}.lesson-step h3{font-size:16px}.lesson-step p{line-height:1.75;margin:0;font-size:14px}
.goal-list{list-style:none;padding:0;display:grid;gap:12px;margin:0}.goal-list li{display:flex;gap:10px;font-size:13px;color:#526964}.goal-list .svg-icon{color:var(--teal);margin-top:1px}
.memory-card{border-radius:17px;background:#eaf4ef;border:1px solid #d1e7dd;padding:22px}.memory-card .eyebrow{margin-bottom:10px}.memory-card p{font-family:var(--display);font-size:20px;line-height:1.4;color:#22584e;margin:0}
.example{padding:20px 22px;border-left:4px solid #d4a46e;background:#faf7f1;border-radius:0 13px 13px 0}.example p{font-size:13px;margin-bottom:0;line-height:1.7}
.quiz-layout{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:18px;align-items:start}
.quiz-card{background:#fff;border:1px solid #dfeae4;border-radius:19px;padding:28px 30px;box-shadow:var(--shadow)}
.quiz-label{display:flex;justify-content:space-between;gap:12px;color:#869793;font-size:11px;font-weight:750;letter-spacing:.07em;text-transform:uppercase}
.quiz-card h2{font-family:var(--display);font-weight:500;font-size:27px;line-height:1.35;max-width:850px;margin:22px 0 24px}
.quiz-options{display:grid;gap:11px}.lesson-choice{width:100%;border:1px solid #dce7e2;border-radius:12px;padding:15px;display:flex;align-items:flex-start;gap:13px;text-align:left;background:#fff;color:#344d4c;font-size:13px;line-height:1.6}
.lesson-choice:hover:not(:disabled){border-color:#7baea4;background:#f4faf6}.lesson-choice.selected{border:2px solid #208374;padding:14px;background:#f0f8f4}.lesson-choice.correct{border:2px solid #258568;padding:14px;background:#eff9f2}.lesson-choice.incorrect{border:2px solid #cc7465;padding:14px;background:#fff4f0}
.answer-letter{font-weight:800;font-size:11px;background:#f3f6f3;border-radius:7px;display:grid;place-items:center;width:25px;height:25px;flex-shrink:0;color:#7d8c89}
.feedback{border-radius:14px;margin-top:20px;padding:16px 18px;border:1px solid #d2e9d9;background:#f1faf4;color:#246d55}.feedback.bad{background:#fff5ef;border-color:#f4d9c5;color:#8f4f32}.feedback-title{font-size:14px;font-weight:800;display:flex;gap:8px;align-items:center}.feedback p{font-size:13px;color:inherit;line-height:1.7;margin:7px 0 0}
.quiz-nav{display:flex;justify-content:space-between;align-items:center;gap:15px;margin-top:21px;flex-wrap:wrap}
.quiz-dots{display:flex;gap:6px}.quiz-dot{width:24px;height:5px;border-radius:4px;background:#dbe6e0}.quiz-dot.done{background:#318d7c}.quiz-dot.current{background:#d1a569}
.tip-panel{border-radius:18px;background:#f6f9f7;border:1px solid #e1ebe5;padding:23px}.tip-panel p{font-size:12px;line-height:1.7}.tip-panel h3{font-size:15px;margin-bottom:9px}
.result-icon{width:62px;height:62px;border-radius:18px;background:#e6f7ec;color:#237d62;display:grid;place-items:center;margin-bottom:18px}
.result-number{font-family:var(--display);font-size:51px;line-height:1.1;color:#244541}
.textarea,input.text-input,select.select-input{width:100%;border:1px solid #d5e2db;border-radius:12px;padding:13px 14px;outline:0;color:var(--ink);background:#fff}
.textarea{min-height:138px;resize:vertical;font-size:13px;line-height:1.8}.textarea:focus,input.text-input:focus,select.select-input:focus{border-color:#62a693;box-shadow:0 0 0 3px #e6f4ee}
.field-label{display:block;font-size:12px;font-weight:800;margin:0 0 9px}.field-desc{font-size:11px;color:#8da09c;margin:7px 0 0}
.reflect-box{padding:24px;background:#fff;border:1px solid var(--hair);border-radius:18px}.reflect-box h3{margin-bottom:10px}.reflect-guide{padding:18px;background:#edf6f0;border:1px solid #d8e9dc;border-radius:12px;color:#3d6456;font-size:13px;line-height:1.75;margin-top:16px}
.revision-grid{display:grid;grid-template-columns:1.4fr .75fr;gap:18px}.review-card{display:flex;gap:14px;justify-content:space-between;align-items:center;padding:16px 0;border-bottom:1px solid #eef1ee}.review-card:last-child{border:0}.review-card h3{font-size:14px;margin-bottom:5px}.review-card p{font-size:12px;margin:0}
.meter-row{display:grid;grid-template-columns:170px 1fr 70px;gap:14px;align-items:center;padding:12px 0}.meter-label{font-size:13px;font-weight:750}.meter-num{text-align:right;color:#82948c;font-size:12px;font-weight:800}
.settings-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.setting-block{border-bottom:1px solid #e8eeea;padding:0 0 19px;margin-bottom:20px}.setting-block:last-child{border:0;margin-bottom:0;padding-bottom:0}.setting-block h3{margin-bottom:6px}.setting-block p{font-size:12px}
.notice{padding:17px 19px;border:1px solid #e8ddc8;background:#fffbf1;border-radius:13px;color:#776442;font-size:12px;line-height:1.7}
.toast{position:fixed;right:24px;bottom:22px;background:#203f42;color:#fff;padding:13px 18px;border-radius:11px;font-size:13px;box-shadow:0 12px 26px #193e4430;z-index:60;max-width:330px;animation:toastin .22s ease-out}.toast.error{background:#8d4c42}@keyframes toastin{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
.page-foot{display:flex;align-items:center;justify-content:space-between;gap:15px;font-size:11px;color:#9aaba5;padding-top:25px;margin-top:20px;border-top:1px solid #e1e8e2;flex-wrap:wrap}
.hidden{display:none!important}
.overlay{display:none}
@media(max-width:1250px){main.main{padding:20px 29px 58px}.topbar{padding:20px 29px 14px}.hero{padding:32px}.module-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:1000px){.sidebar{width:230px}.content-wrap{margin-left:230px;width:calc(100% - 230px)}.hero{grid-template-columns:1fr;min-height:auto}.hero:before{right:-150px}.stats-grid{grid-template-columns:repeat(2,1fr)}.home-grid,.revision-grid,.lesson-grid,.quiz-layout{grid-template-columns:1fr}.module-grid{grid-template-columns:repeat(2,1fr)}.settings-grid{grid-template-columns:1fr}}
@media(max-width:700px){.sidebar{transform:translateX(-102%);transition:transform .22s;width:min(290px,85vw)}.sidebar.open{transform:translateX(0)}.overlay{display:block;position:fixed;inset:0;background:#0c2a32aa;z-index:15}.content-wrap{margin-left:0;width:100%}.topbar{min-height:71px;padding:12px 18px}.mobile-menu,.close-menu{display:inline-flex;background:#fff;border:1px solid var(--hair);border-radius:10px;padding:8px;align-items:center;justify-content:center}.close-menu{margin-left:auto;background:rgba(255,255,255,.12);color:white;border-color:rgba(255,255,255,.15)}main.main{padding:11px 17px 40px}.hero{padding:24px 20px;gap:24px;border-radius:18px}.hero h1{font-size:36px}.focus-card{padding:20px}.date-chip{display:none}.topbar-title{font-size:16px}.stats-grid{gap:9px}.stat{padding:15px}.stat-value{font-size:27px}.stat-caption{font-size:10px}.home-grid{gap:12px}.panel{padding:17px;border-radius:15px}.module-grid{grid-template-columns:1fr;gap:11px}.module-card{min-height:auto;padding:18px}.section-top h1{font-size:32px}.section-head{align-items:flex-start}.searchrow{align-items:stretch}.search{min-width:100%}.lesson-head{padding:25px 20px}.lesson-head h1{font-size:31px}.lesson-head:after{font-size:150px;top:-40px;right:6px}.quiz-card{padding:22px 17px}.quiz-card h2{font-size:23px}.track-item{grid-template-columns:43px 1fr auto;padding:12px;gap:10px}.track-icon{height:39px;width:39px}.meter-row{grid-template-columns:1fr 70px;gap:4px}.meter-row .progress-track{grid-column:1/-1;grid-row:2;margin-top:2px}.page-foot{flex-direction:column;align-items:flex-start}.date-chip{display:none}}
@media(max-width:360px){.topbar{flex-wrap:wrap;gap:10px}.topbar-actions{margin-left:auto}.topbar>div:first-child{min-width:0}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation:none!important;transition:none!important}}


.auth-shell{min-height:100vh;width:100%;display:grid;place-items:center;padding:28px;background:radial-gradient(ellipse at top right,#d9ece2,transparent 60%),var(--canvas)}
.stat-head{gap:8px}.stat-title{min-width:0}.topbar-actions [data-action="sign-out"]{white-space:nowrap}
.auth-card{width:min(100%,510px);padding:42px;background:white;border:1px solid var(--hair);border-radius:24px;box-shadow:var(--shadow)}
.auth-card .brand-mark{margin-bottom:22px}.auth-card h1{font-size:42px}.auth-input{width:100%;padding:12px 14px;margin:4px 0 18px;border:1px solid #c7d7cf;border-radius:10px}.auth-card form{margin:24px 0}.auth-error{color:var(--red);margin:16px 0}.sync-banner{margin:0 45px;padding:10px 14px;background:#e8f5ef;border:1px solid #cce3d9;border-radius:12px;display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:12px}.sync-banner #sync-label{margin-right:auto}.tutor-panel{max-width:950px}.tutor-reply{margin-top:25px}.tutor-reply p{white-space:pre-wrap}.tutor-reply h3{margin:18px 0 10px}.tutor-question{border-top:1px solid var(--hair);padding-top:22px}.tutor-panel form{margin-top:24px}.tutor-panel .notice{margin:20px 0}.tutor-panel h2{margin:10px 0}.auth-shell .small{margin-top:18px}
@media(max-width:700px){.auth-card{padding:27px}.auth-card h1{font-size:34px}.sync-banner{margin:0 18px}.topbar-actions .date-chip{display:none}.module-tabs{flex-wrap:wrap}.sync-banner .btn{white-space:normal}}

/* Teaching, worked examples and accessible statement selection. */
.working-lines{padding-left:24px;display:grid;gap:18px}.working-lines li{padding-left:8px}.working-lines p{margin:6px 0 0;line-height:1.8}.worked-example,.guided-panel{margin:20px 0}.case-text{white-space:pre-line;line-height:1.85;overflow-wrap:anywhere}.teaching-reveal{border:1px solid var(--border,#d9e2df);border-radius:10px;padding:16px;margin:16px 0}summary{cursor:pointer;font-weight:650}details p{margin-top:14px}.exam-options{display:grid;gap:10px;border:0;padding:0}.exam-options label,.exam-select{display:flex;gap:12px;align-items:flex-start;min-height:48px;padding:14px;border:1px solid #ccd9d5;border-radius:9px;cursor:pointer}.exam-options input,.exam-select input{width:20px;height:20px;flex-shrink:0;accent-color:#235e50}.exam-item{margin:18px 0}.answer-right{border-left:5px solid #257450}.answer-wrong{border-left:5px solid #a54a36}.coverage-list>div{display:flex;align-items:center;justify-content:space-between;gap:15px;border-bottom:1px solid #edf0ed;padding:9px 0}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.module-tabs{overflow-x:auto}.module-tab{flex-shrink:0}.brand strong{font-size:19px}.main>.panel{margin-top:18px}.feedback details{margin-top:14px}.feedback li{margin:10px 0}.module-card h2{font-size:22px}.module-card p{line-height:1.75}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #b77a24;outline-offset:3px}
@media(max-width:600px){.coverage-list>div{align-items:flex-start;flex-direction:column;gap:0}.working-lines{padding-left:20px}.module-tabs{max-width:100%;gap:6px}.quiz-options button{overflow-wrap:anywhere}.case-text{font-size:15px}.brand strong{font-size:17px}.topbar-actions{gap:5px}.main{overflow-wrap:anywhere}.action-row{flex-wrap:wrap}.lesson-grid{min-width:0}.read-panel{min-width:0}}

/* Deeper teaching: short paragraphs and labelled reasoning, readable on phones. */
.depth-prose{font-size:1.08rem;line-height:1.85;max-width:72ch}.depth-example{margin:1.5rem 0;padding:1.25rem;background:#f1f6f4;border-radius:14px}.reasoning-map{list-style:none;counter-reset:reason;padding:0;margin:0;display:grid;gap:1rem}.reasoning-map li{counter-increment:reason;position:relative;padding-left:2.75rem;min-width:0}.reasoning-map li:before{content:counter(reason);position:absolute;left:0;top:0;width:1.9rem;height:1.9rem;border-radius:50%;background:#245748;color:white;text-align:center;line-height:1.9rem}.reasoning-map p{margin:.35rem 0 0;line-height:1.7}.depth-options{display:grid;gap:.75rem;margin:1.25rem 0}.depth-choice{text-align:left;white-space:normal;justify-content:flex-start;line-height:1.6}.depth-choice.chosen{outline:3px solid #8cb7a7;outline-offset:2px}.extended-map{max-width:620px;margin:0 auto 1.5rem}.extended-map svg{display:block;width:100%;height:auto;font:16px system-ui}.extended-map figcaption{font-size:.85rem;line-height:1.6}.exam-case p{line-height:1.85}.exam-item>a{display:inline-block;margin-bottom:.5rem}#exam-case{scroll-margin-top:1rem}
.distribution-branches{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(170px,100%),1fr));gap:12px;margin:16px 0}.distribution-branches .flow-node:after{display:none}

.material-diagram{margin:24px 0;padding:18px;border:1px solid #ccdcd6;border-radius:14px;background:#f3f7f2}.material-diagram figcaption{font-weight:700;margin-bottom:14px}.material-diagram ol{display:flex;flex-wrap:wrap;gap:12px;padding:0;list-style:none}.material-diagram li{flex:1 1 150px;padding:14px;border:1px solid #cadbd4;border-radius:10px;background:white;overflow-wrap:anywhere}.material-diagram li+li:before{content:"→ ";color:#286354;font-weight:700}@media(max-width:600px){.material-diagram ol{display:block}.material-diagram li{margin-top:10px}.material-diagram li+li:before{content:"↓ "}}

.material-bands li+li:before{content:"+ "}

.course-update{position:fixed;bottom:16px;right:16px;z-index:1000;max-width:min(420px,calc(100vw - 32px));padding:18px;border:2px solid #33715d;border-radius:14px;background:#fff;color:#153139;box-shadow:0 8px 35px #15313933}.course-update p{font-size:13px;margin:8px 0 12px}