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@keyframes wind{50%{transform:translateX(30px);opacity:.55}}@keyframes coach-drag{0%,100%{transform:translate(-65px,30px)}50%{transform:translate(70px,-40px)}}@keyframes coach-hide{to{opacity:0;visibility:hidden}}
@media(max-width:1100px){.hero{grid-template-columns:1fr 1fr}.hero-aside{display:none}.lab-intro{grid-template-columns:1fr 1fr}.lab-intro .chapter-no{grid-column:1/3}.lesson-tabs{grid-column:1/3}.lab-shell{grid-template-columns:1fr}.canvas-panel{border-right:0}.control-panel{display:grid;grid-template-columns:1fr 1fr}.qi-card{margin:0}.reset{grid-column:1/3}.discoveries-head{grid-template-columns:1fr}.discovery-grid{grid-template-columns:1fr 1fr}.discovery-grid article:nth-child(2){border-right:0}.discovery-grid article:nth-child(-n+2){border-bottom:1px solid var(--line)}.naming{grid-template-columns:1fr}.source-grid{grid-template-columns:1fr 1fr}.source-grid a:nth-child(2){border-right:0}.source-grid a:nth-child(-n+2){border-bottom:1px solid var(--line)}}
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.terrain-status b{color:#9a6538;font-weight:500}
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.terrain-key span{display:flex;align-items:center;gap:6px}
.terrain-key i{display:block;width:24px;height:0;border-top:2px solid #9a6538}
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.terrain-key span:last-child{font-size:11px}
@media(max-width:720px){.terrain-key span{font-size:11px}.terrain-key span:after{content:none!important}}
.tool-row{grid-template-columns:repeat(6,1fr)}
.hero-mountain.c{left:40%;bottom:45%;transform:scale(.9);opacity:.9}
.conclusion{padding:clamp(100px,10vw,170px) clamp(22px,6vw,100px);background:#e6dcc7;border-top:1px solid var(--line)}
.conclusion-head{max-width:1500px;margin:0 auto 58px;display:grid;grid-template-columns:220px minmax(320px,1fr) minmax(280px,520px);gap:40px;align-items:end}
.conclusion h2{margin:0;font:clamp(48px,6vw,90px)/1.05 var(--display);font-weight:400}
.conclusion h2 em{display:block;color:var(--red);font-style:normal}
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.concept-table{width:100%;border-collapse:collapse;background:rgba(255,255,255,.15)}
.concept-table th,.concept-table td{padding:24px 26px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top;line-height:1.8}
.concept-table thead th{color:var(--muted);font-size:12px;letter-spacing:.14em;font-weight:500}
.concept-table tbody th{width:16%;font:25px var(--display);font-weight:400;color:var(--red)}
.concept-table td:nth-child(2){width:24%;color:#47565b}
.concept-table td:last-child{color:var(--muted)}
.concept-table tbody tr:last-child>*{border-bottom:0}
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.first-principles{padding:clamp(100px,11vw,180px) clamp(22px,6vw,100px);background:#dce1d8;border-top:1px solid var(--line)}
.principles-head{max-width:1500px;margin:0 auto 64px;display:grid;grid-template-columns:220px minmax(380px,1fr) minmax(280px,480px);gap:40px;align-items:end}
.principles-head h2{margin:0;font:clamp(48px,6vw,90px)/1.05 var(--display);font-weight:400}
.principles-head h2 em{display:block;color:var(--red);font-style:normal}
.principles-head>p:last-child{margin:0;color:var(--muted);line-height:1.9}
.principle-grid{max-width:1500px;margin:auto;display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-top:2px solid var(--ink)}
.principle-grid article{min-height:370px;padding:32px;display:flex;flex-direction:column;border-right:1px solid var(--line);background:rgba(255,255,255,.16)}
.principle-grid article:last-child{border-right:0}
.principle-grid article>span{font:44px var(--display);color:var(--red)}
.principle-grid small{margin-top:28px;color:var(--muted);font-size:10px;letter-spacing:.18em}
.principle-grid h3{margin:13px 0 18px;font:31px var(--display);font-weight:400}
.principle-grid p{margin:auto 0 0;color:#5f6d70;font-size:14px;line-height:2}
.plain-answer{max-width:1500px;margin:30px auto 0;padding:30px 34px;display:grid;grid-template-columns:150px 1fr;align-items:center;gap:30px;background:var(--night);color:#e9e1d2}
.plain-answer span{color:#87a0a6;font-size:12px;letter-spacing:.25em}
.plain-answer strong{font:clamp(22px,2.4vw,38px)/1.65 var(--display);font-weight:400;color:#efbe69}
@media(max-width:1100px){.principles-head{grid-template-columns:1fr}.principle-grid{grid-template-columns:1fr 1fr}.principle-grid article:nth-child(2){border-right:0}.principle-grid article:nth-child(-n+2){border-bottom:1px solid var(--line)}}
@media(max-width:720px){.first-principles{padding-left:14px;padding-right:14px}.principles-head h2{font-size:52px}.principle-grid{grid-template-columns:1fr}.principle-grid article{min-height:280px;border-right:0;border-bottom:1px solid var(--line)}.principle-grid article:last-child{border-bottom:0}.plain-answer{grid-template-columns:1fr;padding:26px 22px;gap:12px}}

footer{gap:24px;flex-wrap:wrap}
.visitor-map{width:214px;max-width:100%;overflow:hidden;margin-left:auto;letter-spacing:0}
.visitor-map iframe,.visitor-map img,.visitor-map canvas,.visitor-map div{max-width:100%}
@media(max-width:720px){.visitor-map{margin-left:0}}