.hero{min-height:760px;padding:70px clamp(24px,5vw,76px);display:grid;grid-template-columns:minmax(0,1.3fr) minmax(320px,.7fr);gap:50px;align-items:center;position:relative;overflow:hidden}.hero::after{content:"";position:absolute;width:600px;height:600px;border-radius:50%;background:radial-gradient(circle,var(--lime-soft),transparent 68%);right:-250px;top:40px;opacity:.75;pointer-events:none}.hero-copy{position:relative;z-index:1}.hero-copy>p{max-width:680px;font-size:20px;color:var(--muted)}.hero-fingerprint{align-self:stretch;display:flex;align-items:flex-end;gap:8px;position:relative;z-index:1;padding:50px 0}.hero-fingerprint span{flex:1;background:var(--lime);border:1px solid var(--ink);border-radius:999px 999px 8px 8px;animation:rise .8s both}.hero-fingerprint span:nth-child(2n){background:var(--lime-soft);animation-delay:.08s}.hero-fingerprint span:nth-child(3n){animation-delay:.16s}@keyframes rise{from{height:0!important}}.concept-card{min-height:280px;display:flex;flex-direction:column;justify-content:space-between}.concept-number{width:46px;height:46px;border:1px solid var(--ink);border-radius:50%;display:grid;place-items:center}.flow{display:grid;grid-template-columns:repeat(6,minmax(100px,1fr));align-items:center;gap:14px;margin-top:38px}.flow-step{border:1px solid var(--line);background:white;border-radius:20px;min-height:150px;padding:18px;display:flex;flex-direction:column;justify-content:space-between}.flow-arrow{text-align:center}.scale{display:grid;grid-template-columns:repeat(7,1fr);gap:8px;margin:28px 0}.scale button{min-height:96px;border:1px solid var(--ink);background:white;border-radius:18px;cursor:pointer}.scale button[data-score="1"]{border-style:dashed;color:var(--muted)}.scale button.active{background:var(--lime)}.formula{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;background:var(--dark);color:white;border-radius:22px;padding:22px;overflow:auto}.lesson-list{counter-reset:lesson}.lesson{display:grid;grid-template-columns:70px 1fr;gap:20px;border-top:1px solid var(--line);padding:28px 0}.lesson::before{counter-increment:lesson;content:counter(lesson,decimal-leading-zero);font-size:13px;color:var(--muted)}.lesson h3{margin:0 0 8px;font-size:27px}.quiz-choice{display:block;width:100%;text-align:left;margin:8px 0;border:1px solid var(--line);border-radius:14px;background:white;padding:14px;min-height:48px;cursor:pointer}.quiz-choice.correct{background:var(--lime-soft)}.quiz-choice.incorrect{background:#ffd9d0}.builder-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.builder-item{display:grid;gap:8px;border:1px solid var(--line);border-radius:15px;padding:12px;background:white}.builder-item select{min-height:44px;border:1px solid var(--line);border-radius:10px}.route-kicker{display:flex;align-items:center;gap:10px}.route-kicker::before{content:"";width:9px;height:9px;border-radius:50%;background:var(--lime);border:1px solid var(--ink)}