@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Libre+Caslon+Display&display=swap');
:root{--paper:#f6f3eb;--ink:#243d36;--muted:#54635a;--rust:#a5442e;--line:#cbd0c1;--pale:#e5e9df;--cream:#fffdf7;--serif:'Libre Caslon Display',Georgia,serif;--sans:'DM Sans',Arial,sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.65 var(--sans)}a{color:inherit;text-underline-offset:5px}button{font:inherit;color:inherit}a,button{-webkit-tap-highlight-color:transparent}button{cursor:pointer}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--rust);outline-offset:5px}h1,h2,h3,p{margin:0}h1,h2,h3{font-weight:400}h1,h2{font-family:var(--serif);line-height:1.03;letter-spacing:-.035em}h1{font-size:clamp(58px,6.8vw,100px)}h2{font-size:clamp(38px,4vw,60px)}h3{font-size:21px;line-height:1.3}p+p{margin-top:16px}.wrap{width:min(1240px,calc(100% - 96px));margin:auto}.eyebrow{font-size:11px;letter-spacing:.16em;text-transform:uppercase;font-weight:700}.muted{color:var(--muted)}.rust{color:var(--rust)}.skip{position:absolute;top:-90px;background:var(--cream);padding:12px;z-index:20}.skip:focus{top:0}.header{border-bottom:1px solid var(--line);background:var(--paper)}.header-inner{height:98px;display:flex;align-items:center;justify-content:space-between;gap:25px}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;line-height:1.1}.brand-mark{width:34px;height:38px}.brand strong{font-size:19px;font-weight:600;letter-spacing:-.6px}.brand span{display:block;font-size:10px;letter-spacing:.12em;margin-top:5px;text-transform:uppercase}.nav{display:flex;gap:30px;align-items:center;font-size:13px}.nav a{text-decoration:none;padding:8px 0}.nav a:hover,.nav a[aria-current=page]{color:var(--rust);border-bottom:1px solid var(--rust)}.nav .nav-arrow{font-size:18px}.hero{padding:65px 0 60px;display:grid;grid-template-columns:1.1fr 1fr;align-items:center;gap:40px}.hero .eyebrow{display:flex;align-items:center;gap:9px;margin-bottom:27px}.dot{height:7px;width:7px;border-radius:50%;background:var(--rust)}.hero h1 em{color:var(--rust);font-weight:400}.hero-copy>p{max-width:460px;font-size:17px;color:var(--muted);margin-top:27px;line-height:1.7}.actions{display:flex;gap:26px;align-items:center;margin-top:29px;flex-wrap:wrap}.text-link{display:inline-flex;align-items:center;gap:20px;font-size:14px;font-weight:600;text-decoration:none;border-bottom:1px solid;padding:7px 0}.text-link:hover{color:var(--rust)}.sub-link{font-size:13px}.art{position:relative;min-width:0}.art svg{display:block;width:100%;height:auto}.art figcaption{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding-top:11px;font-size:10px;letter-spacing:.09em;text-transform:uppercase}.intro-line{border-top:1px solid var(--line);border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:20px;padding:22px 0;font-size:13px}.intro-line p{max-width:710px}.intro-line span{white-space:nowrap}.section{padding:74px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:40px;margin-bottom:37px}.section-head h2{max-width:650px}.section-head p{max-width:320px;font-size:14px;color:var(--muted)}.section .eyebrow{margin-bottom:17px}.grade-grid{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.grade-card{display:block;text-decoration:none;padding:28px 25px 26px 0;position:relative}.grade-card+.grade-card{border-left:1px solid var(--line);padding-left:25px}.grade-card .grade-num{font-family:var(--serif);font-size:58px;line-height:1;display:block;margin-bottom:19px}.grade-card h3{font-size:18px;font-weight:500;margin-bottom:7px}.grade-card p{font-size:13px;color:var(--muted);max-width:210px}.grade-card .arrow{position:absolute;top:28px;right:20px;font-size:23px;color:var(--rust)}.grade-card:hover{background:var(--pale)}.after-grid{margin-top:20px;font-size:13px}.exercise{background:var(--pale);display:grid;grid-template-columns:.7fr 1.3fr;gap:70px;padding:48px 56px;align-items:center}.exercise h2{font-size:47px;max-width:550px}.exercise p{font-size:14px;max-width:540px;margin-top:20px}.exercise svg{width:100%;max-width:300px;display:block;margin:auto}.exercise .eyebrow{margin-bottom:15px}.exercise details{margin-top:22px;font-size:14px}.exercise summary{cursor:pointer;font-weight:600;text-decoration:underline;text-underline-offset:5px}.exercise ol{padding-left:20px}.questions{display:grid;grid-template-columns:.85fr 1.15fr;gap:90px}.questions h2{font-size:55px}.questions>div>p{font-size:14px;color:var(--muted);max-width:280px;margin-top:23px}.faq{border-top:1px solid var(--line);padding:19px 0}.faq:last-child{border-bottom:1px solid var(--line)}.faq summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:20px;font-size:16px;font-weight:500}.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:'+';font-size:24px;font-weight:400;color:var(--rust)}.faq[open] summary:after{content:'−'}.faq p{font-size:14px;color:var(--muted);margin-top:16px}.faq a{color:var(--ink)}.about-band{border-top:1px solid var(--line);display:grid;grid-template-columns:1fr 2fr;gap:60px;padding:36px 0 50px}.about-band p{font-size:13px;color:var(--muted);max-width:650px}.footer{border-top:1px solid var(--line);padding:23px 0 28px}.footer .wrap{display:flex;justify-content:space-between;gap:20px;font-size:11px;color:var(--muted)}.guide-intro{padding:47px 0 43px}.breadcrumb{font-size:12px;color:var(--muted);margin-bottom:33px}.guide-intro h1{font-size:clamp(53px,6vw,79px);max-width:880px}.guide-intro .lede{max-width:670px;font-size:16px;color:var(--muted);margin-top:24px}.guide-tabs{display:flex;border-bottom:1px solid var(--line);gap:0;overflow:auto}.guide-tabs button{border:0;background:transparent;padding:20px 28px;white-space:nowrap;font-size:14px;border-bottom:3px solid transparent}.guide-tabs button[aria-selected=true]{color:var(--rust);border-bottom-color:var(--rust);font-weight:700}.guide-tabs button:hover{background:var(--pale)}.guide-layout{display:grid;grid-template-columns:1fr 315px;gap:70px;padding:47px 0 60px}.stage-header{display:flex;gap:25px;align-items:start;padding-bottom:33px;border-bottom:1px solid var(--line)}.stage-number{font-family:var(--serif);font-size:90px;line-height:.9;color:var(--rust);min-width:92px}.stage-header h2{font-size:47px;max-width:530px}.stage-header p{font-size:15px;color:var(--muted);margin-top:16px;max-width:520px}.steps{margin:0;padding:0;list-style:none}.steps li{display:grid;grid-template-columns:35px 1fr;gap:16px;padding:27px 0;border-bottom:1px solid var(--line)}.step-index{font-size:11px;color:var(--rust);padding-top:4px}.steps h3{font-size:17px;font-weight:600;margin-bottom:9px}.steps p{font-size:14px;color:var(--muted)}.aside-box{background:var(--pale);padding:28px}.aside-box h3{font-family:var(--serif);font-size:32px;margin:17px 0;line-height:1.06}.aside-box p{font-size:14px;color:var(--muted)}.aside-box .tiny{font-size:12px;margin-top:22px;border-top:1px solid #bfc6b7;padding-top:18px}.aside-line{padding:26px 0;font-size:13px}.aside-line strong{display:block;font-weight:600;margin-bottom:9px}.aside-line p{color:var(--muted)}.guide-note{font-size:12px;color:var(--muted);margin-top:20px}.support{border-top:1px solid var(--line);padding:55px 0 65px}.support-layout{display:grid;grid-template-columns:.75fr 1.25fr;gap:70px;margin-top:30px}.support h2{font-size:48px;max-width:390px}.support .intro{font-size:14px;color:var(--muted);margin-top:22px;max-width:320px}.sources{font-size:12px;color:var(--muted);padding:26px 0;border-top:1px solid var(--line)}.sources summary{cursor:pointer}.sources ul{padding-left:18px;line-height:2}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
@media(min-width:1500px){.hero{padding-top:80px;padding-bottom:75px}}@media(max-width:1000px){.wrap{width:calc(100% - 56px)}.hero{gap:10px}.art{margin:0}.questions{gap:45px}.guide-layout{gap:35px;grid-template-columns:1fr 280px}.guide-tabs button{padding:18px 20px}.exercise{gap:30px;padding:35px}.stage-number{font-size:70px;min-width:65px}.stage-header h2{font-size:40px}}@media(max-width:720px){.wrap{width:calc(100% - 36px)}.header-inner{height:81px;gap:12px}.brand strong{font-size:17px}.brand span{font-size:9px}.brand-mark{width:27px}.nav{gap:17px;font-size:12px}.nav .desktop-only{display:none}.hero{grid-template-columns:1fr;padding:39px 0 31px;gap:25px}.hero h1{font-size:69px;max-width:550px}.hero-copy>p{font-size:16px}.hero .eyebrow{margin-bottom:21px}.hero figure{max-width:430px;margin:auto;width:100%}.intro-line{display:block;font-size:12px}.intro-line span{display:block;margin-top:12px}.section{padding:47px 0}.section-head{display:block;margin-bottom:28px}.section-head p{margin-top:20px}.grade-grid{grid-template-columns:1fr 1fr}.grade-card:nth-child(3){border-left:0;padding-left:0;border-top:1px solid var(--line)}.grade-card:nth-child(4){border-top:1px solid var(--line)}.grade-card{padding:23px 18px 24px 0}.grade-card+.grade-card{padding-left:18px}.grade-card .grade-num{font-size:48px}.grade-card p{font-size:12px}.grade-card h3{font-size:16px}.grade-card .arrow{right:10px}.exercise{grid-template-columns:1fr;padding:28px;gap:20px}.exercise svg{max-width:190px}.exercise h2{font-size:40px}.questions{grid-template-columns:1fr;gap:30px}.questions h2{font-size:45px}.questions>div>p{max-width:460px}.about-band{grid-template-columns:1fr;gap:18px;padding:28px 0}.footer .wrap{display:block}.footer p+p{margin-top:7px}.guide-intro{padding:29px 0}.breadcrumb{margin-bottom:27px}.guide-intro h1{font-size:55px}.guide-tabs{margin:0 -18px;padding:0 18px}.guide-tabs button{padding:16px}.guide-layout{grid-template-columns:1fr;gap:30px;padding:32px 0 37px}.stage-header{gap:14px}.stage-number{font-size:64px;min-width:56px}.stage-header h2{font-size:37px}.support-layout{grid-template-columns:1fr;gap:28px}.support{padding:37px 0}.support h2{font-size:42px}.faq summary{font-size:15px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

.header-inner{height:auto;min-height:98px;flex-wrap:wrap;padding:20px 0}.nav{flex-wrap:wrap;gap:8px 22px}.draft-bar{background:#e5e9df;padding:10px 0;font-size:12px}.reading{max-width:1120px}.reading .guide-intro{padding:55px 0}.reading h1{font-size:clamp(48px,6vw,78px)}.chapter{padding:42px 0;border-top:1px solid var(--line)}.chapter>h2,.callout h2{font-size:clamp(32px,4vw,46px);margin-bottom:24px}.chapter p,.chapter li{max-width:78ch}.chapter ul,.chapter ol{padding-left:23px}.chapter li+li{margin-top:12px}.chapter h3{font-weight:600;margin-bottom:15px}.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}.card{padding:27px;background:var(--cream);border:1px solid var(--line);text-decoration:none}.card p{font-size:15px}.card .eyebrow{display:block;margin-bottom:14px}.project-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}.project-grid figure{margin:0 0 25px}.project-grid img{width:100%;height:290px;object-fit:contain;background:var(--pale)}figcaption,.source-note{font-size:12px!important;color:var(--muted);line-height:1.65;margin-top:12px!important;overflow-wrap:anywhere}.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin:26px 0}.stat-grid strong{font-family:var(--serif);font-size:45px;display:block}.stat-grid span{font-size:13px;display:block}.callout{background:var(--pale);padding:32px;margin:25px 0}.callout li+li{margin-top:14px}.jump-nav{display:flex;flex-wrap:wrap;gap:12px 28px;padding:0 0 25px}.table-scroll{overflow:auto;margin:25px 0}table{border-collapse:collapse;width:100%;font-size:14px}caption{text-align:left;font-weight:600;padding:12px 0}td,th{text-align:left;border:1px solid var(--line);padding:12px;vertical-align:top}th{background:var(--pale)}input,textarea{width:100%;font:inherit;color:var(--ink);background:var(--cream);border:1px solid #8b9b8d;padding:8px;border-radius:2px;min-width:0}textarea{resize:vertical}.script{height:320px;font-size:14px;line-height:1.6}.copy,.print-button,.sheet button{border:1px solid var(--ink);background:var(--pale);padding:10px 18px;margin:12px 0}.field-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.field-grid label{font-size:13px;font-weight:600}.field-grid input,.field-grid textarea{display:block;margin-top:5px}.sheet{max-width:1100px;margin:35px auto;padding:20px}.sheet h1{font-size:45px;margin:25px 0 12px}.sheet .field-grid textarea{height:50px}.sheet p{font-size:12px;margin:12px 0}.sheet td{padding:5px}.sheet td textarea{height:55px;padding:3px;font-size:12px}.no-print{display:flex;justify-content:space-between;gap:20px}.copy-status{font-size:13px}
@media(max-width:720px){.header-inner{align-items:start;gap:18px}.nav{gap:4px 17px;width:100%;font-size:13px}.nav a{padding:3px 0}.card-grid,.project-grid,.field-grid{grid-template-columns:1fr}.reading .guide-intro{padding:38px 0}.chapter{padding:30px 0}.callout{padding:23px}.callout ol{padding-left:21px}.project-grid img{height:250px}.stat-grid{gap:12px}.stat-grid strong{font-size:35px}.stat-grid span{font-size:11px}.sheet{margin:10px;padding:8px}.sheet table{min-width:700px}.sheet{overflow:auto}.reading h1{overflow-wrap:break-word}.chapter a{overflow-wrap:anywhere}}
@media print{.header,.footer,.draft-bar,.skip,button,.no-print{display:none!important}.wrap{width:100%}.chapter{break-inside:avoid}.reading h1{font-size:36px}.field-grid{grid-template-columns:1fr 1fr}textarea,input{border-color:#999}.table-scroll{overflow:visible}.reading .guide-intro{padding:12px 0}body{background:white;font-size:11px}.chapter{padding:15px 0}.chapter>h2{font-size:24px}a{color:inherit} .card,.callout{background:white}}

.math-box{border-left:4px solid var(--rust);padding:20px 25px;margin:24px 0;background:var(--pale)}.data-tools{display:block;background:var(--pale);border:1px solid var(--line);padding:20px;margin:18px 0 30px}.data-tools p{font-size:13px;max-width:80ch;margin:8px 0}.data-buttons{display:flex;flex-wrap:wrap;gap:10px}.data-buttons button,.family-actions button{font:inherit;font-size:14px;padding:10px 14px;background:var(--cream);border:1px solid var(--ink)}.save-choice{display:flex;align-items:center;gap:10px;font-size:14px}.save-choice input{width:18px;height:18px;min-height:0}.data-warning{color:var(--muted)}.copy-fallback{height:130px}.family-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px 40px}.family-grid h2{font-size:30px;margin-bottom:15px}.family-grid p{font-size:15px}.family-actions{margin:25px 0}.family .guide-intro h1{font-size:60px}.project-grid figure{min-width:0}.project-grid figure img{width:100%;height:290px;object-fit:contain}
@media(max-width:720px){.family-grid{grid-template-columns:1fr}.family .guide-intro h1{font-size:45px}.data-tools{padding:15px}.data-buttons button{font-size:13px}.data-tools p{overflow-wrap:anywhere}.sheet .data-tools{min-width:0}.family-grid{gap:25px}}
@media print{@page{size:letter;margin:10mm}.data-tools,.family-actions{display:none!important}.family .guide-intro{padding:0 0 12px}.family .guide-intro h1{font-size:28px}.family .guide-intro .lede{font-size:11px;margin-top:8px}.family .eyebrow{font-size:8px}.family-grid{grid-template-columns:1fr 1fr;gap:14px 24px}.family-grid h2{font-size:19px;margin-bottom:6px}.family-grid p{font-size:10px;line-height:1.5}.family .source-note{font-size:9px!important}.family-grid section{break-inside:avoid}}

@media print{.family{font-size:12px;line-height:1.35}.family p{font-size:12px}.family .source-note{font-size:10px}}

.next-action{padding:18px 22px;border-left:3px solid var(--rust);background:var(--pale);font-size:15px;margin-bottom:18px}.next-action a{display:block;margin-top:7px}.page-menu{margin:0 0 30px;border-bottom:1px solid var(--line);padding:10px 0 18px}.page-menu nav{display:flex;flex-wrap:wrap;gap:12px 24px;margin-top:14px;font-size:14px}.page-menu summary{cursor:pointer}.profile-row{display:grid;grid-template-columns:1fr 1fr auto;gap:12px;align-items:end;margin:12px 0}.profile-row label{font-size:13px}.profile-row select{display:block;width:100%;font:inherit;padding:8px;color:var(--ink);background:var(--cream);border:1px solid #8b9b8d}.profile-row input{display:block}.profile-row button{padding:9px 14px;min-height:41px}.teaching-label{padding:18px;background:var(--pale);font-size:14px}.practice-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;margin:30px 0}.practice-grid figure{margin:0}.practice-grid svg{width:100%;height:auto;background:var(--cream);border:1px solid var(--line)}.practice-grid figcaption{font-size:14px!important}.sample-label{border:1px solid var(--line);padding:22px;background:var(--cream)}.reading .chapter>h2{font-size:clamp(29px,3.5vw,40px)}
@media(max-width:720px){.profile-row{grid-template-columns:1fr}.profile-row button{justify-self:start}.practice-grid{grid-template-columns:1fr}.next-action{padding:16px}.page-menu nav{display:grid;gap:12px}.data-buttons button{min-height:44px}.reading .guide-intro{padding:30px 0}}
@media print{.next-action,.page-menu,.teaching-label{display:none}.practice-grid{grid-template-columns:repeat(3,1fr)}}

.layout-example{max-width:760px;margin:25px 0}.layout-example svg{width:100%;height:auto}#message-kind{display:block;width:100%;font:inherit;padding:10px;color:var(--ink);background:var(--cream);margin:8px 0 20px}#message-page,#message-body{margin:8px 0 20px}.chapter label{display:block}

.contact-honey{display:none!important}#contact-form label{display:block;margin:20px 0 8px;font-weight:600}#contact-form select{max-width:100%;font:inherit;padding:10px;border:1px solid #8b9b8d;background:var(--cream);color:var(--ink)}#send-message{background:var(--ink);color:var(--cream);font:inherit;font-weight:600;cursor:pointer}.contact-actions{align-items:center}#contact-form .source-note{overflow-wrap:anywhere}

#send-message:disabled{opacity:.65;cursor:wait}#message-status:not(:empty){padding:16px;border:1px solid var(--line);background:var(--pale)}#message-status.send-error{border-color:var(--rust)}#message-status.send-success{border-color:var(--ink)}
