@font-face{font-family:Inter;src:url('/assets/inter-regular.woff2')}@font-face{font-family:Inter;src:url('/assets/inter-semibold.woff2');font-weight:600}
:root{--ink:#20382f;--muted:#67776e;--green:#173e35;--lime:#d7ef96;--paper:#f6f7f2;--line:#dfe5db;--orange:#c47b41;--blue:#5480aa;font-family:Inter,system-ui,sans-serif;color:var(--ink);background:var(--paper)}*{box-sizing:border-box}body{margin:0}button,input,select,textarea{font:inherit}button,a,input,select,textarea{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:default;opacity:.45}button,a,input,textarea,select{outline-offset:4px}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #739b46}a{color:inherit}.site-header{height:96px;max-width:1360px;margin:auto;padding:0 48px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:flex;gap:13px;align-items:center;text-decoration:none;font-weight:600;font-size:20px}.brand-icon{width:41px;height:41px;display:grid;place-items:center;background:var(--green);color:var(--lime);border-radius:12px;font-size:28px}.brand-sub{display:block;font-size:9px;letter-spacing:1.7px;color:var(--muted);margin-top:5px}.course-tag{font-size:12px;color:var(--muted)}main{max-width:1264px;margin:0 auto;padding:38px 48px 70px;min-height:calc(100vh - 170px)}footer{border-top:1px solid var(--line);padding:24px 48px;display:flex;justify-content:space-between;font-size:11px;color:var(--muted);max-width:1360px;margin:auto}.text-button{border:0;background:none;color:var(--muted);padding:0;text-decoration:underline}.skip{position:absolute;top:-80px;left:10px;background:white;padding:12px;z-index:10}.skip:focus{top:10px}.eyebrow{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:2px;color:var(--muted);margin:0 0 18px}.intro-layout{display:grid;grid-template-columns:1.05fr 1fr;gap:70px;align-items:center;min-height:570px}.intro-copy h1{font-size:58px;line-height:1.08;letter-spacing:-2.6px;font-weight:600;margin:0 0 24px}.intro-copy h1 em{font-style:normal;color:#6b8b46}.intro-copy>p{font-size:16px;line-height:1.8;max-width:470px;color:var(--muted)}.chips{display:flex;gap:10px;flex-wrap:wrap;margin:28px 0}.chip{font-size:11px;border:1px solid var(--line);padding:9px 12px;border-radius:30px}.button{border:1px solid var(--green);background:var(--green);color:white;border-radius:9px;padding:12px 19px;display:inline-flex;align-items:center;justify-content:center;gap:12px;font-size:13px;font-weight:600;text-decoration:none}.button.secondary{background:white;color:var(--green);border-color:var(--line)}.button.light{background:var(--lime);color:var(--green);border-color:var(--lime)}.button.small{padding:9px 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#ccd6c9;border-radius:7px;padding:11px;width:100%;font-size:13px}textarea{resize:vertical;min-height:95px;line-height:1.6}input[type=checkbox]{width:auto;accent-color:var(--green)}.choice{display:flex;align-items:flex-start;gap:10px;font-size:12px;line-height:1.7;margin:15px 0}.feedback{padding:16px;background:#edf3e4;border:1px solid #d5e2c5;border-radius:9px;font-size:13px;line-height:1.7;margin-top:15px}.feedback.error,.notice{background:#fff4e8;border-color:#efd5b6;color:#845225}.notice{border:1px solid #efd5b6;padding:13px;border-radius:9px;font-size:12px;line-height:1.6;margin:12px 0}.hidden{display:none!important}.intro-actions{display:flex;justify-content:space-between;align-items:center;margin-top:26px;gap:15px}.reminder-list{display:grid;gap:14px;margin:25px 0}.reminder{display:flex;gap:18px}.number{flex-shrink:0;display:grid;place-items:center;border:1px solid var(--line);border-radius:50%;width:32px;height:32px;font-size:12px;color:var(--muted)}.reminder h3{font-size:14px;margin:0 0 7px}.reminder p{color:var(--muted);font-size:13px;line-height:1.7;margin:0}.version-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:30px}.version-card{padding:27px;display:flex;flex-direction:column;gap:15px}.version-card h2{font-size:21px;margin:5px 0}.version-card p{color:var(--muted);font-size:13px;line-height:1.8;flex:1}.version-card .version-icon{font-size:25px;background:#eff3e8;width:46px;height:46px;border-radius:12px;display:grid;place-items:center}.version-card:first-child{border-color:#9cb37d}.workspace{display:grid;grid-template-columns:186px minmax(0,1fr);gap:32px}.sidebar{border-right:1px solid var(--line);padding-right:24px}.session-pill{font-size:10px;letter-spacing:.6px;background:#e6eedc;padding:8px 10px;border-radius:7px;display:inline-block;margin-bottom:26px}.sidebar h2{font-size:11px;margin:0 0 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0}.completion-title p{color:var(--muted);font-size:14px;line-height:1.7}.checkmark{display:grid;place-items:center;width:55px;height:55px;border-radius:50%;background:var(--lime);margin:auto;font-size:26px}.summary-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.summary-grid p{font-size:12px;line-height:1.8;color:var(--muted)}.summary-grid h3{font-size:13px}.small-label{font-size:10px;letter-spacing:1px;color:var(--muted);text-transform:uppercase}.toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background:var(--green);color:white;padding:15px 22px;border-radius:10px;box-shadow:0 6px 25px #0002;z-index:20;font-size:13px;max-width:90vw}dialog{border:1px solid var(--line);border-radius:17px;padding:30px;max-width:550px;color:var(--ink)}dialog::backdrop{background:#16332c55}dialog p{font-size:13px;line-height:1.8;color:var(--muted)}.loading{padding:80px;text-align:center;color:var(--muted)}
.two-col+.card,.summary-grid+.card{margin-top:20px}
@media(max-width:1050px){.site-header{padding:0 28px}main{padding:28px}.intro-layout{gap:30px}.intro-copy h1{font-size:46px}.workspace{grid-template-columns:150px 1fr;gap:20px}.simulation{grid-template-columns:1fr}.controls{border-left:0;border-top:1px solid var(--line);display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.control-buttons{grid-column:1/-1;display:flex}.controls>.body-copy{grid-column:1/-1}.stats b{font-size:15px}.rate-grid{gap:6px}}
@media(max-width:700px){.site-header{height:78px;padding:0 20px}.course-tag{display:none}main{padding:25px 20px 45px}.intro-layout{grid-template-columns:1fr;gap:30px;min-height:0}.intro-copy h1{font-size:43px;letter-spacing:-1.8px}.intro-visual{padding:23px}.intro-progress{margin-bottom:28px}.check-grid,.version-grid,.two-col,.summary-grid{grid-template-columns:1fr}.page-heading h1{font-size:30px}.workspace{display:block}.sidebar{border:0;padding:0}.sidebar h2,.sidebar-bottom{display:none}.session-pill{margin-bottom:13px}.stage-nav{display:flex;overflow:auto;gap:12px;margin-bottom:25px}.stage-button{min-width:125px;font-size:10px;padding:8px 0}.stage-button small{font-size:8px}.lesson-heading{gap:10px}.lesson-heading h1{font-size:26px}.time-tag{font-size:9px;padding:6px;white-space:nowrap}.plot-panel{padding:16px}.controls{padding:16px;gap:8px}.controls .field{font-size:10px}.rate-grid{grid-template-columns:repeat(3,1fr)}.cp-tabs{gap:7px}.cp-tab{padding:9px;font-size:10px}.card{padding:20px}.simulation{padding:0}.lesson-actions .button{font-size:11px;padding:12px}.intro-copy>p{font-size:14px}footer{padding:20px;gap:20px;line-height:1.7}.completion-title h1{font-size:32px}}
@media(prefers-reduced-motion:no-preference){.button{transition:background .15s,transform .15s}.button:hover{transform:translateY(-1px)}.rate-card{transition:border .15s}}