@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Manrope:wght@400;500;600;700;800&display=swap');

:root{--paper:#f8f9f6;--white:#fff;--ink:#202f31;--muted:#63716f;--green:#173e3b;--green-soft:#e9eeeb;--line:#e2e7e1;--lime:#eef2d6;--orange:#efbd91;--blue:#edf2f5;--purple:#eeebf6;--red:#9d3930;--shadow:0 5px 25px #173e3b05;font-family:'DM Sans',system-ui,sans-serif;color:var(--ink);background:var(--paper);font-size:15px;line-height:1.6;font-synthesis:none}
*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a,input,select{touch-action:manipulation}button{cursor:pointer}a{color:var(--green)}button:disabled{cursor:default;opacity:.55}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #a16a38;outline-offset:4px}h1,h2,h3,p{margin:0}h1,h2,h3{font-family:Manrope,system-ui,sans-serif;line-height:1.25}h1{font-size:38px;font-weight:800;letter-spacing:-1.5px}h2{font-size:20px;letter-spacing:-.5px}h3{font-size:16px;font-weight:800}p+p{margin-top:12px}svg{flex-shrink:0}.skip-link{position:fixed;left:16px;top:-100px;padding:12px;background:white;z-index:10}.skip-link:focus{top:12px}.shell{display:grid;grid-template-columns:236px minmax(0,1fr);min-height:100vh}.sidebar{background:#f0f2ec;border-right:1px solid var(--line);padding:38px 24px;display:flex;flex-direction:column;gap:35px;position:sticky;top:0;height:100dvh}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;line-height:1.12;font-size:22px;font-family:Manrope,sans-serif;font-weight:800;letter-spacing:-.8px}.brand-mark{width:42px;height:46px;background:var(--green);border-radius:12px;display:grid;place-items:center;color:var(--lime)}.brand small{display:block;font-size:11px;font-weight:500;letter-spacing:1.2px;margin-top:7px;text-transform:uppercase;color:var(--muted)}.nav-label,.eyebrow{font-size:10px;letter-spacing:1.8px;font-weight:800;color:var(--muted);text-transform:uppercase}.nav-label{margin:4px 14px 13px}.nav{display:grid;gap:7px}.nav button{border:0;background:transparent;display:flex;gap:13px;align-items:center;text-align:left;padding:13px 15px;border-radius:9px;color:#586562;font-size:14px;font-weight:600}.nav button.active{background:var(--green);color:#fff}.nav button:not(.active):hover{background:#e6eae2}.sidebar-note{background:#e5ead8;border-radius:13px;padding:19px 17px;margin-top:auto}.sidebar-note .tiny-label{color:#496149}.sidebar-note h3{margin:10px 0 8px;font-size:15px}.sidebar-note p{font-size:12px;color:#53614e;line-height:1.65}.sidebar-bottom{font-size:11px;color:var(--muted);display:flex;gap:7px;align-items:center}.main-wrap{padding:31px 48px 24px;max-width:1410px;width:100%;margin:auto}.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:37px;gap:15px}.breadcrumbs{font-size:12px;color:var(--muted);display:flex;align-items:center;gap:10px}.saved{font-size:11px;color:#5e6c62;display:flex;align-items:center;gap:7px}.saved-dot{width:6px;height:6px;border-radius:50%;background:#729076}.main{outline:none}.intro-row{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:26px}.intro-row .eyebrow{margin-bottom:11px}.subtitle{font-size:13px;color:var(--muted);margin-top:10px}.date-tag{font-size:12px;color:var(--muted);white-space:nowrap;padding-bottom:4px}.hero-grid{display:grid;grid-template-columns:1.65fr 1fr;gap:20px}.hero{background:var(--green);border-radius:18px;min-height:292px;padding:31px 30px;position:relative;overflow:hidden;color:#fff}.hero-content{position:relative;z-index:1;max-width:68%}.hero h2{font-size:30px;letter-spacing:-1px;line-height:1.2;margin-top:14px}.hero p{color:#d0ddd7;font-size:13px;max-width:280px;margin:14px 0 23px}.hero .tag{background:#ffffff15;color:#d8e3d2;border-color:#ffffff20}.hero-art{position:absolute;right:-4px;bottom:5px;width:45%;height:83%;opacity:.93;pointer-events:none}.tag{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);padding:4px 9px;border-radius:5px;font-size:10px;font-weight:700;letter-spacing:.3px;line-height:1.5}.tag.sol{background:var(--green-soft);border-color:transparent;color:#315e51}.tag.amc{background:#f6ecdf;border-color:transparent;color:#895b30}.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:12px 19px;min-height:46px;border:1px solid transparent;border-radius:8px;background:var(--green);color:white;font-size:12px;font-weight:700;text-decoration:none;line-height:1.4}.btn:hover{filter:brightness(1.1)}.btn.light{background:var(--lime);color:var(--green)}.btn.secondary{background:white;border-color:var(--line);color:var(--ink)}.btn.quiet{background:transparent;border-color:transparent;color:var(--muted)}.btn.small{padding:9px 13px;min-height:38px;font-size:11px}.link-button{border:0;background:transparent;color:var(--green);padding:3px 0;font-size:12px;font-weight:700;display:inline-flex;align-items:center;gap:7px;text-decoration:none}.link-button:hover{text-decoration:underline}.card{background:white;border:1px solid var(--line);border-radius:15px;box-shadow:var(--shadow)}.plan{padding:24px}.card-heading{display:flex;align-items:center;justify-content:space-between;gap:12px}.tiny-label{font-size:10px;font-weight:800;letter-spacing:1px;text-transform:uppercase}.duration{color:var(--muted);font-size:11px;white-space:nowrap}.plan-list{list-style:none;margin:19px 0 0;padding:0;display:grid;gap:19px}.plan-list li{display:flex;align-items:flex-start;gap:12px}.step-circle{border:1px solid var(--line);height:29px;width:29px;display:grid;place-items:center;font-size:10px;border-radius:50%;color:#527365;background:#f8faf5}.step-info{flex:1;line-height:1.4}.step-info strong{font-size:12px;display:block;font-weight:700}.step-info span{font-size:11px;color:var(--muted)}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:15px;margin:31px 0 16px}.section-heading h2{font-size:18px}.section-heading p{font-size:12px;color:var(--muted);margin-top:5px}.tracks{display:grid;grid-template-columns:1fr 1fr;gap:20px}.track-card{padding:23px 24px}.track-top{display:flex;align-items:center;gap:13px;margin-bottom:16px}.track-icon{width:43px;height:43px;display:grid;place-items:center;border-radius:11px;background:var(--green-soft);color:#3c6554}.track-card.amc .track-icon{background:#f7ecdf;color:#946739}.track-card h3{font-size:16px}.track-card .track-top p{font-size:11px;color:var(--muted);margin-top:3px}.track-card>p{color:var(--muted);font-size:12px;max-width:350px;min-height:40px}.track-bottom{margin-top:21px;display:flex;align-items:center;justify-content:space-between;gap:12px}.track-bottom 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#d6ddca;background:#eff3e6;border-radius:10px;font-size:12px}.banner.error{background:#fbefeb;border-color:#ead5cc;color:var(--red)}.banner button{flex-shrink:0}.action-row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.practice-start{padding:27px;margin:20px 0}.practice-start p{font-size:13px;color:var(--muted);margin:10px 0 20px}.chips{display:flex;gap:8px;flex-wrap:wrap}.chip{border:1px solid var(--line);border-radius:7px;padding:8px 13px;background:white;color:var(--muted);font-size:12px}.chip.active{background:var(--green);color:white;border-color:var(--green)}.skill-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.skill-card{padding:20px;display:flex;flex-direction:column;align-items:start;gap:10px}.skill-card p{font-size:12px;color:var(--muted);flex:1}.skill-card .link-button{margin-top:7px}.skill-card .evidence{font-size:10px;color:var(--muted)}.evidence b{color:var(--ink)}.quiz-wrap{max-width:800px;margin:0 auto}.quiz-top{display:flex;justify-content:space-between;gap:15px;align-items:center;font-size:12px;color:var(--muted);margin:3px 0 16px}.progress-bar{height:5px;background:#e2e8dd;border-radius:6px;overflow:hidden;margin-bottom:25px}.progress-bar span{display:block;height:100%;background:#789e7a}.question-card{padding:32px 38px}.question-meta{display:flex;justify-content:space-between;align-items:center;gap:15px;margin-bottom:25px}.question-meta .skill-name{font-size:11px;color:var(--muted)}.question-card h1{font-size:23px;line-height:1.55;letter-spacing:-.5px;max-width:650px}.equation{font-family:Manrope,system-ui,sans-serif;white-space:pre-line;font-size:32px;line-height:1.65;font-weight:600;letter-spacing:.2px;padding:24px 0 26px;color:var(--green)}.answer-label{display:block;font-size:12px;font-weight:700;margin-top:24px;margin-bottom:8px}.answer-input{display:block;width:100%;max-width:330px;border:1px solid #b9c8bd;border-radius:8px;padding:13px 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21px;max-width:440px}.table-wrap{overflow:auto}.skills-table{border-collapse:collapse;width:100%;text-align:left;font-size:12px}.skills-table th{padding:13px 20px;background:#f0f3ec;color:var(--muted);font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.5px}.skills-table td{padding:15px 20px;border-top:1px solid var(--line)}.skills-table td:first-child{font-weight:600;min-width:175px}.status{font-size:10px;color:#6e795d;background:#f1f3e7;padding:4px 8px;border-radius:4px;white-space:nowrap}.status.growing{color:#3f6b4c;background:#e9f2e7}.progress-tools{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-top:22px}.data-note{font-size:11px;color:var(--muted);max-width:500px}.about{margin-top:23px;border-top:1px solid var(--line);padding-top:18px;font-size:11px;color:var(--muted)}.about summary{cursor:pointer;font-weight:700;color:var(--ink)}.about p{margin-top:12px}.about ul{padding-left:20px}.hidden{display:none!important}.noscript{padding:30px}.mobile-brand{display:none}@media(min-width:1550px){.main-wrap{padding-top:40px;padding-bottom:40px}.hero{min-height:325px}.hero h2{font-size:34px}}
@media(max-width:1180px){.main-wrap{padding:28px 30px 22px}.shell{grid-template-columns:205px minmax(0,1fr)}.sidebar{padding:33px 18px}.hero-grid{grid-template-columns:1.5fr 1fr;gap:15px}.hero{padding:26px 23px}.hero h2{font-size:27px}.hero-content{max-width:76%}.hero-art{right:-25px;opacity:.65}.plan{padding:21px 18px}.skill-grid{grid-template-columns:repeat(2,1fr)}.track-card{padding:20px}.track-bottom{flex-wrap:wrap}h1{font-size:34px}}
@media(max-width:900px){.shell{grid-template-columns:1fr}.sidebar{height:auto;position:static;padding:17px 23px;flex-direction:row;align-items:center;justify-content:space-between;border-right:0;border-bottom:1px solid var(--line);gap:20px}.brand{font-size:18px}.brand small{display:none}.brand-mark{height:36px;width:36px;border-radius:9px}.nav{display:flex;gap:3px}.nav button{padding:11px 12px;font-size:12px;gap:8px}.nav-label,.sidebar-note,.sidebar-bottom{display:none}.main-wrap{padding:24px 27px}.topbar{margin-bottom:28px}.hero-grid{grid-template-columns:1.5fr 1fr}.hero h2{font-size:29px}.hero-content{max-width:75%}.hero-art{opacity:.6;right:-10px}.question-card{padding:28px}.intro-row h1{font-size:33px}}
@media(max-width:640px){:root{font-size:14px}.sidebar{padding:13px 16px;gap:8px;flex-wrap:wrap}.brand{font-size:17px;gap:8px}.brand small{display:none}.brand-mark{height:32px;width:32px}.nav button{padding:9px 10px;font-size:11px}.nav button svg{display:none}.main-wrap{padding:21px 18px}.topbar{margin-bottom:25px}.breadcrumbs{font-size:10px}.saved{font-size:9px}.intro-row{align-items:start;margin-bottom:21px}.intro-row h1{font-size:29px;letter-spacing:-1px}.date-tag{display:none}.subtitle{font-size:12px}.hero-grid{grid-template-columns:1fr;gap:15px}.hero{min-height:278px;padding:27px}.hero h2{font-size:31px}.hero-content{max-width:73%}.hero-art{width:45%;right:-9px;opacity:.75}.plan{padding:22px}.plan-list{gap:14px}.tracks{grid-template-columns:1fr;gap:14px}.track-card>p{min-height:0}.track-bottom{margin-top:17px}.section-heading{margin-top:25px}.section-heading h2{font-size:17px}.stats-strip{margin-top:20px;padding:19px 0}.stat{padding:0 12px;gap:7px;display:block}.stat strong{font-size:25px;display:block}.stat span{font-size:9px}.footer{align-items:start;font-size:9px}.footer span{max-width:70%}.skill-grid{grid-template-columns:1fr}.skill-card{gap:8px}.skill-card p{margin-top:0}.skill-card .link-button{margin-top:4px}.question-card{padding:23px 20px}.question-card h1{font-size:20px}.equation{font-size:27px}.question-meta{flex-wrap:wrap;margin-bottom:19px}.answer-actions{gap:10px}.answer-actions .btn{flex:1;white-space:nowrap}.answer-actions .btn.quiet{flex:0 auto}.summary-hero{padding:25px 21px;gap:15px;align-items:start}.summary-hero h2{font-size:23px}.score-circle{width:81px;height:81px;border-width:4px}.score-circle strong{font-size:19px}.score-circle span{font-size:8px}.summary-tracks{gap:11px}.summary-track{padding:17px}.summary-track h3{font-size:14px}.choices{grid-template-columns:1fr}.progress-tools{align-items:start;flex-direction:column}.data-note{font-size:10px}.banner{align-items:start;flex-wrap:wrap}.quiz-top{font-size:11px}.welcome-note{align-items:start;font-size:10px}}
@media(prefers-reduced-motion:no-preference){button,a,input{transition:background .15s,border-color .15s,filter .15s}.progress-bar span{transition:width .25s}}